On August 27, 2015, the reporter was informed that the Texas Sanitation Department in Shandong Province has purchased nearly 60 ZLJ5160ZYS series garbage trucks from Zoomlion to help transform and upgrade the "bucket-to-bottom" garbage transfer system in Texas.
Zoomlion ZLJ5160ZYS series compression garbage truck
It is reported that in order to further improve the level of urban purification, since August, Texas has implemented a "bucket in the end" mode of garbage collection, that is, completely banned the relatively backward embedded garbage bins, in the district, units, back streets and alleys. In urban villages, a certain number of trash cans are placed according to the proportion of the population, which is uniformly collected and transported to the waste incineration power plant for harmless treatment by the municipal sanitation department. This approach avoids the crossover of functions, saves intermediate links, and can effectively solve the problem of secondary pollution of domestic garbage. At the same time, it can also eliminate waste bins on both sides of main roads, and use door-to-door collection of bagged domestic garbage to completely solve the main road trash can impact on the city's capacity. Zoomlion’s ZLJ5160ZYS series garbage truck has become the first choice for the environmental sanitation department in Texas because of its superior performance.
In terms of product performance, the ZLJ5160ZYS series is a new generation of rear-mounted compression garbage trucks independently designed by the environmental industry company. The vehicle adopts two-way compression technology to complete the collection and transfer of municipal solid waste. The load can reach more than 5000kg and the compression ratio can reach 1:2.5. Its comprehensive performance has reached the advanced level of domestic similar products. The product is designed by a professional design team. The horizontal cross section of the waste bin is a rectangular frame and the vertical section is a trapezoidal frame. Both sides and the top surface are arc shapes. The whole machine looks beautiful and generous. The main components of the trash can, shovel and filler material made of high-strength manganese steel, a solid structure, light weight, stiffness, and strength.
In terms of environmental protection, the ZLJ5160ZYS series garbage truck adopts a unique combination of “seal†and “drainage†technology. The garbage is in a closed state in the process of compression loading and transportation, ensuring that the sewage does not leak during collection and transportation. And jetting phenomenon. The product has strong storage capacity for sewage, and the volume of the bottom sewage tank of the filling device reaches 0.42m3. The filler cap completely covers the feeding port of the filling device, eliminates the phenomenon that the tail gas flow disturbance caused by the transport process causes the flying dust particles to fly, and the appearance is also more beautiful. The side fence is made of aluminum alloy material, which makes the whole appearance high-end. It can achieve full material recycling, eliminate waste of resources and environmental pollution.
In terms of safety in production, the ZLJ5160ZYS series garbage truck operation control boxes are installed in the cab and the rear of the vehicle respectively. The operation control box in the cab can control pushing and unloading and select the operation mode. The rear operation control box controls the pressure filling. The operation of the organization and the lifting mechanism is very convenient. Especially in landfills, operators can complete the unloading without getting off the train. The product adopts an advanced hydraulic lift safety circuit. A one-way balance valve is installed on the lift cylinder in the hydraulic system. The valve blocks the direct connection between the lift cylinder and the hydraulic hose. Even if the fuel pipe bursts, the filling device does not It will fall down suddenly and cause accidents, improving the use of safety. The hydraulic system also uses imported PLC (Programmable Logic Controller) integrated control, which reduces the occurrence of failures, avoids accidents caused by misoperation, and improves reliability. A special emergency brake button can be used to stop the garbage compaction device in any state or any position to ensure the safety of workers and equipment.
The company's environmental sanitation products assisted the transformation and upgrading of the “bucket in the end†waste collection and transfer system in Dezhou, which has received favorable comments from customers and accelerated the upgrading of the domestic waste collection and transportation system in Dezhou City, further improving the The company's brand influence in Texas.
Angular contact Ball Bearings
Angular Contact Ball Bearing has high limit rotational speed, they can carry radial load and axial load simultaneously, they can also withstand purely radial load. The axial load carrying capacity depends on the magnitude of contact angle and increases with increasing contact angle.
Structures
1. Non-separable angular contact ball bearings
This inner ring and outer ring of this type of bearings cannot be separated and comprises following structures:
Contact angle α=15° counter bore on outer ring,7000Ctype
Contact angle α=25° counter bore on outer ring,7000ACtype
Contact angle α=40° counter bore on outer ring, 7000B type
2. Four-point contact ball bearings
This type of bearings is separable bearings. Whereof, QJ0000 type has two-piece inner ring and QJF0000 type has two-piece outer ring. Their contact angles are same as 35°.When received no load or pure radial load, the steel balls of the Ball Bearing contact with the four points of the rings. When it is received a pure axial load, the steel balls perform a two-point contact with the ring. In addition, besides the axial load from both directions, this kind of bearing can take torque-load as well.
3. Double row angular contact ball bearings
This kind of bearings can accommodate radial loads as well as axial loads acting in both directions; they can also take loading moment. They can restrain the axial displacement from both directions of the shaft or housing; the contact angle is 30° (or 40°)
Permissible tilt angle
There is only a little inclination between the inner ring and outer ring of angular contact bearings, the permissible tilt angle varies according to the internal clearance when the bearings are operating, the bearing dimensions, internal design, force and loading moment received by the bearings. The value of the maximum permissible tilt angle should be able to ensure that no much extra stress to be generated inside the bearings.
The tilt angle existing between the inner ring and outer ring will influence the bearing service life. Meanwhile, the running accuracy is decreased down and noise increased.
Tolerance and clearance
The tolerances of general angular contact bearings are class normal P0, class P5 and P6. Class P4 and P2 are applicable to machine tool spindles and bearing amount in pairs.
Clearance of single row angular contact bearing is decided by the contact angle, which is guaranteed by manufacturing.
Axial clearance of Four-point contact ball bearings is listed in table 1.
Cage material
Generally, the cage of angular contact bearing is pressed cage of steel sheet or brass cage, and it is solid brass cage for two row angular contact bearing.
Dynamic equivalent radial load
Single-row angular contact ball bearings with a contact angle of 15°
Single bearing or bearing in pairs(7000 C.7000 C/DT)
Fa/Fr≤e Pr=Fr
Fa/Fr>e Pr=0.44Fr+YFa
Back-to-back and face to face arrangements(7000 C/DB.7000 C/DF)
Fa/Fr≤e Pr=Fr+Y1Fa
Fa/Fr>e Pr=0.72Fr+Y2Fa
Single-row angler contact ball bearings with a contact angle of 25°
Single bearing or bearing in pairs(7000 AC.7000 AC/DT)
Fa/Fr≤0.68 Pr=Fr
Fa/Fr>0.68 Pr=0.41Fr+0.87Fa
Back-to-back and face to face arrangements(7000 AC/DB.7000 AC/DF)
Fa/Fr≤0.68 Pr=Fr+0.92Fa
Fa/Fr>0.68 Pr=0.67Fr+1.41Fa
Single-row angular contact ball bearings with a contact angle of 40°
Single bearing or bearing in pairs (7000 B.7000 B/DT)
Fa/Fr≤1.14 Pr=Fr
Fa/Fr>1.14 Pr=0.35Fr+0.57Fa
Back-to-back and face to face arrangements(7000 B/DB.7000 B/DF)
Fa/Fr≤1.14 Pr=Fr+0.55Fa
Fa/Fr>1.14 Pr=0.57Fr+0.93Fa
Four point contact ball bearings with a contact angle of 35°
Fa/Fr≤0.95 Pr=Fr+0.66Fa
Fa/Fr>0.95 Pr=0.6Fr+1.07Fa
Double-row angular contact ball bearings with a contact angle of 45°
Fa/Fr≤1.34 Pr=Fr+0.47Fa
Fa/Fr>1.34 Pr=0.54Fr+0.81Fa
Static equivalent radial load
Single-row angular contact ball bearings with a contact angle of 15°
For single bearing or bearing in pairs(7000 C.7000 C/DT)
P0r=0.5Fr+0.46Fa
P0r<Fr P0r=Fr
For back-to-back and face-to-face arrangements (7000 C/DB.7000 C/DF)
P0r=Fr+0.92Fa
Single-row angular contact ball bearings with contact angle of 25°
For single bearing or bearing in pairs (7000 AC.7000 AC/DT)
P0r=0.5Fr+0.38Fa
when P0r<Fr let P0r=Fr
For two bearings in back-to-back and face-to-face arrangements
P0r=Fr+0.76Fa
Single-row angular contact ball bearings with contact angle of 40°
For single bearing or bearing in pairs
P0r=0.5Fr+0.26Fa
when P0r<Fr let P0r=Fr
For two bearings in back-to-back and face-to-face arrangements
P0r=Fr+0.52Fa
Four point contact ball bearings
P0r=Fr+0.58Fa
Double-row angular contact ball bearings with contact angle of 45°
P0r=Fr+0.44Fa
Fr Actual radial load of the bearing.
Fa Axial load of the bearing
The values of e .Y .Y1 .Y2 see Table 2.
Table 1 Axial internal clearance of four point contact ball bearings
μm
|
Nominal bore diameter d mm |
C2 clearance |
Standard clearance |
C3 clearance |
C4 clearance |
|||||
|
Over |
To |
Min |
Max |
Min |
Max |
Over |
To |
Min |
Max |
|
10 18 40
60 80 100
140 180 220
260 |
18 40 60
80 100 140
180 200 260
300 |
15 26 36
46 56 66
76 96 115
135 |
55 66 86
96 116 136
156 176 195
215 |
45 56 76
86 96 116
136 156 175
195 |
85 106 126
136 156 176
196 216 235
275 |
75 96 116
126 135 156
176 196 215
255 |
115 146 166
176 196 216
236 256 295
335 |
105 136 156
166 176 196
216 236 275
295 |
145 186 206
216 236 256
276 296 335
355 |
Table 2 Calculate Coefficient
μm
|
|
e |
Y |
Y1 |
Y2 |
|
0.172 0.345 0.689 1.03 1.38 2.07 3.45 5.17 6.89 |
0.38 0.4 0.43 0.46 0.47 0.5 0.55 0.56 0.56 |
1.47 1.4 1.3 1.23 1.19 1.12 1.02 1 1 |
1.65 1.57 1.46 1.38 1.34 1.26 1.14 1.12 1.12 |
2.39 2.28 2.11 2 1.93 1.82 1.66 1.63 1.63 |
Dw is the diameter of the rolling element
Angular Contact Ball Bearing
Machined Cage Angular Contact Ball Bearing,Pressed Cage Angular Contact Ball Bearing,One Row Angular Contact Ball Bearing,Two Row Angular Contact Ball Bearing
Xibei Bearing Co.,Ltd. , https://www.nxzjck.com