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SEIKIT PENGETAHUAN TENTANG CONVEYOR
Sistem Conveyor yaitu sistem mekanis yang memilik tujuan untuk memindahkan antar tempat(dari
tempat satu ke tempat yang la
Sistem Conveyor yaitu sistem mekanis yang memilik tujuan
untuk memindahkan antar tempat(dari tempat satu ke tempat yang lain). Conveyor Seringkali
Dipakai Untuk Memindahkan Barang Oleh Perusahaan Besar.
Dilihat Dari Beberapa Sudut,
Conveyor Memiliki Nilai Ekonois Dalam Memindahkan barang, jika dibandingkan dengan truk. Conveyor
dapat menampung barang dengan jumlah besar dan terus berlanjut (continue) dari satu tempat ke
tempat lain. Perpindahan tempat tersebut harus mempunyai Tempat yang tetap untuk berhent, agar
nilai ekonomis Conveyor Terlihat begitu bermanfaat. Tentu Sistem ini Memiliki Kelemahan Juga.
Kelemahan sistem ini adalah tidak empunyai fleksibilitas saat lokasi barang yang dipindahkan
tidak tetap dan jumlah barang yang masuk tidak Terus Menerus(continue).
Conveyor Berkembang Menjadi eragai Jenis. Jenis-jenis conveyor tersebut antara lain Apron,
Flight, Pivot, Overhead, Loadpropelling, Car, Bucket, Screw, Roller, Vibrating, Pneumatic, dan
Hydraulic. Disini akan dibahas satu jenis conveyor yaitu Roller Conveyor.
Roller conveyor adalah sistem conveyor yang
penumpu utama barang yang dipindahkan adalah roller. Roller yang terdapat pada sistem ini berbeda
dengan roller pada conveyor jenis yang lain. Roller pada sistem ini didesain khusus agar cocok
dengan kondisi barang yang dipindahkan, misal roller diberi lapisan karet, lapisan anti karat,
dan lain sebagainya. Sedangkan roller pada sistem jenis yang lain didesain cocok untuk sabuk yang
FUNGSI DAN SPESIFIKASI ROLLER
Roller conveyor hanya bisa memindahkan barang yang berupa unit dan tidak bisa
memindahkan barang yang berbentuk bulk atau butiran. Unit yang bisa dipindahkan menggunakan
roller conveyor juga harus mempunyai dimensi tertentu dan berat tertentu agar bisa
ditransportasikan. Untuk memindahkan barang dalam bentuk bulk, bulk tersebut harus dikemas
terlebih dahulu dalam unit agar bisa ditransportasikan menggunakan sistem ini.
Spesifikasi roller conveyor juga harus disesuaikan dengan dimensi dan beban unit yang akan
ditransportasikan. Rancangan sistem roller conveyor harus mempu menerima beban maksimum yang
mungkin terjadi pada sistem conveyor. Selain itu, desain dimensi sistem juga harus
dipertimbangkan agar sesuai dengan dimensi unit yang akan ditransportasikan. Dalam beberapa kasus
dimensi unit yang lebih lebar dari dimensi lebar roller masih diperbolehkan.
antar roller disesuaikan dengan dimensi unit yang akan ditransportasikan. Diusahakan jarak antar
roller dibuat sedekat mungkin agar tumpuan beban semakin banyak. Selain itu, dimensi unit yang
ditranportasikan minimal harus ditumpu oleh 3 roller. Jika kurang dari 3 roller, maka unit
tersebut akan tersendat bahkan bisa jatuh keluar sistem tranportasi roller conveyor.
Kelebihan roller conveyor adalah bisa mentransformasikan pada kemiringan tertentu sehingga
conveyor bisa mentranportasikan barang dari satu tingkat ke tingkat yang lain. Selain itu, roller
conveyor juga bisa membelokkan jalur unit yang belokkannya sangat tajam. Hal tersebut bermanfaat
untuk daerah yang ruanganya terbatas.
Selain itu, roller
conveyor memmpunyai kemampuan untuk menggabungkan 2 jalur yang terpisah. Penggabungan 2 jalur
tersebut dapat dilakukan dengan berbagai metode seperti Y-Line dan accumulating roller
Mekanisme kerja roller conveyor
secara umum adalah sebagai berikut:
1.Motor penggerak memutar poros pada motor yang
telah terpasang sistem transmisi menuju drive roller.
2.Putaran poros pada motor
ditransmisikan ke drive roller melalui sistem transmisi yang telah dirancang khusus untuk sistem
3.Drive roller yang terpasang sistem transmisi tersebut ikut berputar
karena daya yang disalurkan oleh sistem transmisi.
4.Drive roller mentransmisikan
putaran roller ke roller lain dengan tranmisi rantai.
5.Antar roller diberi jalur
transmisi yang sama dengan perbandingan transmisi 1:1 sehingga putaran antar roller mempunyai
kecepatan yang sama.
6.Tranmisi antar roller tersebut diteruskan sampai ke roller paling
saco-indonesia.com, Konsul Jenderal Indonesia di Jeddah telah mengatakan sulit untuk dapat memproses hukum majikan yang diduga t
saco-indonesia.com, Konsul Jenderal Indonesia di Jeddah telah mengatakan sulit untuk dapat memproses hukum majikan yang diduga telah menyiksa tenaga kerja Indonesia, Kokom Binti Bama, di Arab Saudi karena kurangnya data dan tidak adanya dokumen resmi.
“Kita sulit untuk memproses hukum, karena dia tidak tahu majikannya di mana, karena Kokom ini kerjanya pindah-pindah dan kerja bebas. Statusnya juga memang ilegal setelah kabur dari majikan pertama,” kata Konsul Pelayanan Warga di KJRI Jeddah, Sunarko, ketika dihubungi Wartawan BBC Indonesia, Christine Franciska.
Seperti yang telah diketahui, Kokom Binti Bama yang berusia 35 tahun , telah ditemukan sekitar tiga bulan yang lalu dan dibawa ke KJRI Jeddah setelah mengalami penyiksaan saat bekerja.
Dia juga sempat lari dari majikan pertama karena gajinya tak dibayar selama lebih dari satu tahun. Setelah bekerja di tempat lain secara ilegal, dia telah mengalami penyiksaan dengan sejumlah memar di wajah dan sekujur tubuh.
Kondisi Kokom ketika ditemukan cukup parah. “Kaki kanan kurang berfungsi dengan baik, penglihatannya agak kabur, dan kupingnya juga digunting,” kata sejumlah aktivis Buruh Migran Indonesia Saudi Arabia.
Menurut Sunarko, keadaan Kokom yang kini tinggal di tempat penampungan KJRI sudah membaik.
Pihaknya kini juga sedang memperjuangkan hak-hak berupa gaji pada majikan yang pertama.
“Yang bisa kita upayakan kita menuntut gaji majikan pertama, karena status kerjanya resmi selama satu tahun. Ini juga sedang kita urus hak-haknya. Tetapi majikan pertama ini tidak melakukan penyiksaan, Kokom kabur saja karena tidak dibayar,” kata Sunarko.
Namun Aktivis Buruh Migran Indonesia Saudi Arabia, Abdul Hadi, juga mengatakan penanganan kasus penyiksaan TKI di Arab Saudi oleh pemerintah RI kurang bertanggung jawab dan kurang manusiawi.
“Kasus Klik seperti [Erwiana] di Hong Kong, sebetulnya di sini lebih banyak, tetapi penanganannya perlu dipertanyakan,” katanya.
Editor : Dian Sukmawati
Finding Scandal in New York and New Jersey, but No Shame
From sea to shining sea, or at least from one side of the Hudson to the other, politicians you have barely heard of are being accused of wrongdoing. There were so many court proceedings involving public officials on Monday that it was hard to keep up.
In Newark, two underlings of Gov. Chris Christie were arraigned on charges that they were in on the truly deranged plot to block traffic leading onto the George Washington Bridge.
Ten miles away, in Lower Manhattan, Dean G. Skelos, the leader of the New York State Senate, and his son, Adam B. Skelos, were arrested by the Federal Bureau of Investigation on accusations of far more conventional political larceny, involving a job with a sewer company for the son and commissions on title insurance and bond work.
The younger man managed to receive a 150 percent pay increase from the sewer company even though, as he said on tape, he “literally knew nothing about water or, you know, any of that stuff,” according to a criminal complaint the United States attorney’s office filed.
The bridge traffic caper is its own species of crazy; what distinguishes the charges against the two Skeloses is the apparent absence of a survival instinct. It is one thing not to know anything about water or that stuff. More remarkable, if true, is the fact that the sewer machinations continued even after the former New York Assembly speaker, Sheldon Silver, was charged in January with taking bribes disguised as fees.
It was by then common gossip in political and news media circles that Senator Skelos, a Republican, the counterpart in the Senate to Mr. Silver, a Democrat, in the Assembly, could be next in line for the criminal dock. “Stay tuned,” the United States attorney, Preet Bharara said, leaving not much to the imagination.
Even though the cat had been unmistakably belled, Skelos father and son continued to talk about how to advance the interests of the sewer company, though the son did begin to use a burner cellphone, the kind people pay for in cash, with no traceable contracts.
That was indeed prudent, as prosecutors had been wiretapping the cellphones of both men. But it would seem that the burner was of limited value, because by then the prosecutors had managed to secure the help of a business executive who agreed to record calls with the Skeloses. It would further seem that the business executive was more attentive to the perils of pending investigations than the politician.
Through the end of the New York State budget negotiations in March, the hopes of the younger Skelos rested on his father’s ability to devise legislation that would benefit the sewer company. That did not pan out. But Senator Skelos did boast that he had haggled with Gov. Andrew M. Cuomo, a Democrat, in a successful effort to raise a $150 million allocation for Long Island to $550 million, for what the budget called “transformative economic development projects.” It included money for the kind of work done by the sewer company.
The lawyer for Adam Skelos said he was not guilty and would win in court. Senator Skelos issued a ringing declaration that he was unequivocally innocent.
THIS was also the approach taken in New Jersey by Bill Baroni, a man of great presence and eloquence who stopped outside the federal courthouse to note that he had taken risks as a Republican by bucking his party to support paid family leave, medical marijuana and marriage equality. “I would never risk my career, my job, my reputation for something like this,” Mr. Baroni said. “I am an innocent man.”
The lawyer for his co-defendant, Bridget Anne Kelly, the former deputy chief of staff to Mr. Christie, a Republican, said that she would strongly rebut the charges.
Perhaps they had nothing to do with the lane closings. But neither Mr. Baroni nor Ms. Kelly addressed the question of why they did not return repeated calls from the mayor of Fort Lee, N.J., begging them to stop the traffic tie-ups, over three days.
That silence was a low moment. But perhaps New York hit bottom faster. Senator Skelos, the prosecutors charged, arranged to meet Long Island politicians at the wake of Wenjian Liu, a New York City police officer shot dead in December, to press for payments to the company employing his son.
Sometimes it seems as though for some people, the only thing to be ashamed of is shame itself.
Obama Finds a Bolder Voice on Race Issues
As he reflected on the festering wounds deepened by race and grievance that have been on painful display in America’s cities lately, President Obama on Monday found himself thinking about a young man he had just met named Malachi.
A few minutes before, in a closed-door round-table discussion at Lehman College in the Bronx, Mr. Obama had asked a group of black and Hispanic students from disadvantaged backgrounds what could be done to help them reach their goals. Several talked about counseling and guidance programs.
“Malachi, he just talked about — we should talk about love,” Mr. Obama told a crowd afterward, drifting away from his prepared remarks. “Because Malachi and I shared the fact that our dad wasn’t around and that sometimes we wondered why he wasn’t around and what had happened. But really, that’s what this comes down to is: Do we love these kids?”
Many presidents have governed during times of racial tension, but Mr. Obama is the first to see in the mirror a face that looks like those on the other side of history’s ledger. While his first term was consumed with the economy, war and health care, his second keeps coming back to the societal divide that was not bridged by his election. A president who eschewed focusing on race now seems to have found his voice again as he thinks about how to use his remaining time in office and beyond.
In the aftermath of racially charged unrest in places like Baltimore, Ferguson, Mo., and New York, Mr. Obama came to the Bronx on Monday for the announcement of a new nonprofit organization that is being spun off from his White House initiative called My Brother’s Keeper. Staked by more than $80 million in commitments from corporations and other donors, the new group, My Brother’s Keeper Alliance, will in effect provide the nucleus for Mr. Obama’s post-presidency, which will begin in January 2017.
“This will remain a mission for me and for Michelle not just for the rest of my presidency but for the rest of my life,” Mr. Obama said. “And the reason is simple,” he added. Referring to some of the youths he had just met, he said: “We see ourselves in these young men. I grew up without a dad. I grew up lost sometimes and adrift, not having a sense of a clear path. The only difference between me and a lot of other young men in this neighborhood and all across the country is that I grew up in an environment that was a little more forgiving.”
Organizers said the new alliance already had financial pledges from companies like American Express, Deloitte, Discovery Communications and News Corporation. The money will be used to help companies address obstacles facing young black and Hispanic men, provide grants to programs for disadvantaged youths, and help communities aid their populations.
Joe Echevarria, a former chief executive of Deloitte, the accounting and consulting firm, will lead the alliance, and among those on its leadership team or advisory group are executives at PepsiCo, News Corporation, Sprint, BET and Prudential Group Insurance; former Secretary of State Colin L. Powell; Senator Cory Booker, Democrat of New Jersey; former Attorney General Eric H. Holder Jr.; the music star John Legend; the retired athletes Alonzo Mourning, Jerome Bettis and Shaquille O’Neal; and the mayors of Indianapolis, Sacramento and Philadelphia.
The alliance, while nominally independent of the White House, may face some of the same questions confronting former Secretary of State Hillary Rodham Clinton as she begins another presidential campaign. Some of those donating to the alliance may have interests in government action, and skeptics may wonder whether they are trying to curry favor with the president by contributing.
“The Obama administration will have no role in deciding how donations are screened and what criteria they’ll set at the alliance for donor policies, because it’s an entirely separate entity,” Josh Earnest, the White House press secretary, told reporters on Air Force One en route to New York. But he added, “I’m confident that the members of the board are well aware of the president’s commitment to transparency.”
The alliance was in the works before the disturbances last week after the death of Freddie Gray, the black man who suffered fatal injuries while in police custody in Baltimore, but it reflected the evolution of Mr. Obama’s presidency. For him, in a way, it is coming back to issues that animated him as a young community organizer and politician. It was his own struggle with race and identity, captured in his youthful memoir, “Dreams From My Father,” that stood him apart from other presidential aspirants.
But that was a side of him that he kept largely to himself through the first years of his presidency while he focused on other priorities like turning the economy around, expanding government-subsidized health care and avoiding electoral land mines en route to re-election.
After securing a second term, Mr. Obama appeared more emboldened. Just a month after his 2013 inauguration, he talked passionately about opportunity and race with a group of teenage boys in Chicago, a moment aides point to as perhaps the first time he had spoken about these issues in such a personal, powerful way as president. A few months later, he publicly lamented the death of Trayvon Martin, a black Florida teenager, saying that “could have been me 35 years ago.”
That case, along with public ruptures of anger over police shootings in Ferguson and elsewhere, have pushed the issue of race and law enforcement onto the public agenda. Aides said they imagined that with his presidency in its final stages, Mr. Obama might be thinking more about what comes next and causes he can advance as a private citizen.
That is not to say that his public discussion of these issues has been universally welcomed. Some conservatives said he had made matters worse by seeming in their view to blame police officers in some of the disputed cases.
“President Obama, when he was elected, could have been a unifying leader,” Senator Ted Cruz of Texas, a Republican candidate for president, said at a forum last week. “He has made decisions that I think have inflamed racial tensions.”
On the other side of the ideological spectrum, some liberal African-American activists have complained that Mr. Obama has not done enough to help downtrodden communities. While he is speaking out more, these critics argue, he has hardly used the power of the presidency to make the sort of radical change they say is necessary.
The line Mr. Obama has tried to straddle has been a serrated one. He condemns police brutality as he defends most officers as honorable. He condemns “criminals and thugs” who looted in Baltimore while expressing empathy with those trapped in a cycle of poverty and hopelessness.
In the Bronx on Monday, Mr. Obama bemoaned the death of Brian Moore, a plainclothes New York police officer who had died earlier in the day after being shot in the head Saturday on a Queens street. Most police officers are “good and honest and fair and care deeply about their communities,” even as they put their lives on the line, Mr. Obama said.
“Which is why in addressing the issues in Baltimore or Ferguson or New York, the point I made was that if we’re just looking at policing, we’re looking at it too narrowly,” he added. “If we ask the police to simply contain and control problems that we ourselves have been unwilling to invest and solve, that’s not fair to the communities, it’s not fair to the police.”
Moreover, if society writes off some people, he said, “that’s not the kind of country I want to live in; that’s not what America is about.”
His message to young men like Malachi Hernandez, who attends Boston Latin Academy in Massachusetts, is not to give up.
“I want you to know you matter,” he said. “You matter to us.”