Durability testing device for gearbox power takeoff

Abstract

The utility model provides a durability testing device for a gearbox power takeoff. According to the durability testing device for the gearbox power takeoff, a testing table is fixedly connected to the top of a bottom plate, a driving unit is installed at the position, close to one side, of the top of the testing table, a coupler is installed at the output end of the driving unit, and a torque meter is installed at the output end of the coupler; the output end of the torquemeter is provided with a bearing seat, the output end of the bearing seat is provided with a cardan shaft, a loading unit is installed at the position, close to the other side, of the top of the test board, and the output end of the loading unit is provided with an output end cardan shaft; and the working platform is mounted at the top of the test board. According to the durability testing device for the gearbox power takeoff, reasonable output power can be set according to requirements through the structure, so that data during durability testing of the gearbox power takeoff can be more accurately and comprehensively obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of durability testing of a transmission power take-off, in particular to a durability performance testing device for a transmission power take-off. Background Art

[0002] The gearbox mainly refers to the car's gearbox, which is divided into manual and automatic. The manual gearbox is mainly composed of gears and shafts, and produces speed and torque changes through different gear combinations; while the automatic gearbox AT is composed of a torque converter, planetary gears and a hydraulic control system, and achieves speed and torque changes through hydraulic transmission and gear combinations.

[0003] Before the transmission power take-off leaves the factory, it needs to be tested for durability to ensure its durability in actual use.

[0004] The traditional transmission power take-off durability performance test device is not convenient to adjust the output power in time according to demand during actual use, which affects the accuracy and comprehensiveness of the transmission power take-off durability performance test data.

[0005] Therefore, it is necessary to provide a durability performance testing device for a transmission power take-off to solve the above technical problems. Utility Model Content

[0006] The utility model provides a durability performance testing device for a gearbox power take-off, which solves the problem that a traditional gearbox power take-off durability testing device is inconvenient to adjust the output power in time according to demand during actual use, thus affecting the accuracy and comprehensiveness of test data.

[0007] In order to solve the above technical problems, the utility model provides a durability performance testing device for a gearbox power take-off, comprising: a bottom plate;

[0008] A test bench, the test bench is fixedly connected to the top of the base plate, a driving unit is installed at a position near one side of the top of the test bench, a coupling is installed at the output end of the driving unit, a torque meter is installed at the output end of the coupling, a bearing seat is installed at the output end of the torque meter, a universal shaft is installed at the output end of the bearing seat, a loading unit is installed at a position near the other side of the top of the test bench, and an output-end universal shaft is installed at the output end of the loading unit;

[0009] A working platform, the working platform is installed on the top of the test bench, a support plate is installed on the top of the test bench near the back, a contact pad is installed on the front of the support plate, and a clamping assembly is installed on the top of the test bench near the front;

[0010] The clamping assembly and support plate are located on the front and back of the working platform respectively. Input shaft speed: 0-3000rpm, input shaft torque: 0-1000N.m, above 2000rpm it enters constant power state, drive unit 22 power: 200kW, output shaft speed: 0-1500rpm, output shaft torque: 0-1000N.m, loading unit 21 power: 200kW, input shaft torque measurement: 0-5000N.m, accuracy 1%.

[0011] Preferably, a mounting frame is installed on one side of the test bench, and a control system is installed on the front of the mounting frame;

[0012] The control system is used to control the computer, and the mounting bracket is used to install the control system.

[0013] Preferably, a power cabinet is installed on the top of the base plate, and a cabinet door is rotatably connected to the front of the power cabinet;

[0014] The cabinet door is equipped with a lock.

[0015] Preferably, the clamping assembly comprises a docking plate, the front side of the docking plate is threadedly connected with an adjusting bolt, one end of the back side of the adjusting bolt is rotatably connected with a clamping plate through a rotating ring, and the front side of the clamping plate near both sides is equipped with a stabilizing rod through a fixing plate;

[0016] The stabilizer bar runs through the butt plate and increases the stability of the splint when it moves.

[0017] Preferably, a protective frame is installed on the top of the test bench, and the top of the protective frame is fixedly connected to fixed plates at both sides, and an air suction hood is installed on the top of the fixed plate. Multiple rows of air holes are opened at the top of the test bench near both sides;

[0018] There is an opening on the top of the protective frame at the front for easy operation.

[0019] Preferably, an exhaust assembly is installed on the top of the bottom plate, the exhaust assembly comprises a protective shell, heat dissipation holes are provided on both sides of the protective shell, a fan is installed inside the protective shell, and a discharge pipe and an air intake pipe are installed at the outlet and inlet of the fan respectively;

[0020] The other end of the air intake pipe is connected to the air intake hood, and the heat dissipation holes are used to assist in heat dissipation.

[0021] Compared with the related art, the durability performance testing device for the gearbox power take-off provided by the utility model has the following beneficial effects:

[0022] The utility model provides a durability performance test device for a gearbox power take-off. In order to improve the accuracy and comprehensiveness of data of the gearbox power take-off during the durability test, a working platform is first installed on the test bench, and a drive unit is installed on the test bench, and then the coupling and the drive unit are connected, and a universal shaft is installed at the other end of the coupling through a torque meter and a bearing seat, and an output end universal shaft is installed at the positions on both sides of the top of the test bench through a loading unit. Before the actual test, the gearbox power take-off to be tested is fixed on the working platform through a special clamping assembly, and the input shaft and the output shaft are respectively connected to the universal shaft and the output end universal shaft, and the length of the universal shaft and the position of the movable end can be within a certain range. The software can be adjusted within a certain range to accommodate samples of different specifications. During the test, the speed, torque and duration of each stage input are set through computer software. After the program starts running, the speed and torque of the input shaft of the sample are controlled to meet the test requirements through the cooperation of the drive unit and the loading unit. During the test, the software detects the input shaft speed, torque and sample lubricating oil temperature or shell temperature in real time, and draws a durability test curve. The software can set parameter alarms and shutdown limits. If there are abnormal conditions such as torque over-limit and temperature over-high, the machine can be shut down and recorded immediately. Through this structure, a reasonable output power can be set according to demand, so that the data of the gearbox power take-off durability performance test can be obtained more accurately and comprehensively. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a preferred embodiment of a durability performance testing device for a gearbox power take-off provided by the utility model;

[0024] Figure 2 A structural schematic diagram of a bearing seat is provided for the utility model;

[0025] Figure 3 Provided for the utility model Figure 2 An enlarged view of point A is shown;

[0026] Figure 4 A schematic diagram of the structure of the air extraction component is provided for the utility model;

[0027] Figure 5 The utility model provides a structural schematic diagram of the heat dissipation hole.

[0028] Numbers in the figure: 1, bottom plate, 2, cabinet door, 3, power cabinet, 4, test bench, 5, protective frame, 6, fixing plate, 7, suction pipe, 8, suction hood, 9, support plate, 10, contact pad, 11, working platform, 12, air vent, 13, mounting frame, 14, control system, 15, clamping assembly, 151, docking plate, 152, adjusting bolt, 153, stabilizer bar, 154, fixing plate, 155, rotating ring, 156, splint, 16, coupling, 17, torque meter, 18, bearing seat, 19, universal joint, 20, output end universal joint, 21, loading unit, 22, drive unit, 23, exhaust assembly, 231, protective shell, 232, heat dissipation hole, 233, fan, 24, discharge pipe. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0030] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of a durability performance testing device for a gearbox power take-off provided by the utility model; Figure 2 A structural schematic diagram of a bearing seat is provided for the utility model; Figure 3 Provided for the utility model Figure 2 An enlarged view of point A is shown; Figure 4 A schematic diagram of the structure of the air extraction component is provided for the utility model; Figure 5 The utility model provides a schematic diagram of the structure of the heat dissipation hole. The durability performance test device for the gearbox power take-off comprises: a bottom plate 1;

[0031] A test bench 4, wherein the test bench 4 is fixedly connected to the top of the base plate 1, a driving unit 22 is installed at a position near one side of the top of the test bench 4, a coupling 16 is installed at the output end of the driving unit 22, a torque meter 17 is installed at the output end of the coupling 16, a bearing seat 18 is installed at the output end of the torque meter 17, a universal shaft 19 is installed at the output end of the bearing seat 18, a loading unit 21 is installed at a position near the other side of the top of the test bench 4, and an output-end universal shaft 20 is installed at the output end of the loading unit 21;

[0032] A working platform 11, the working platform 11 is installed on the top of the test bench 4, a support plate 9 is installed on the top of the test bench 4 near the back, a contact pad 10 is installed on the front of the support plate 9, and a clamping assembly 15 is installed on the top of the test bench 4 near the front;

[0033] The clamping assembly 15 and the support plate 9 are respectively located on the front and back of the working platform 11, the input shaft speed: 0-3000rpm, the input shaft torque: 0-1000N.m, and the constant power state is entered above 2000rpm, the drive unit 22 power: 200kW, the output shaft speed: 0-1500rpm, the output shaft torque: 0-1000N.m, the loading unit 21 power: 200kW, the input shaft torque measurement: 0-5000N.m, the accuracy of 1%, the input shaft speed measurement: 0-5000rpm, the accuracy of 0.5%, the lubricating oil temperature in the box: 0-200℃, the accuracy of 1%.

[0034] A mounting frame 13 is installed on one side of the test bench 4, and a control system 14 is installed on the front of the mounting frame 13;

[0035] The control system 14 is a control computer, and the mounting frame 13 is used to install the control system 14 .

[0036] A power cabinet 3 is installed on the top of the base plate 1, and a cabinet door 2 is rotatably connected to the front of the power cabinet 3;

[0037] The cabinet door 2 is provided with a lock, and a power switch is installed inside the power cabinet 3.

[0038] The clamping assembly 15 comprises a docking plate 151, the front side of the docking plate 151 is threadedly connected with an adjusting bolt 152, one end of the back side of the adjusting bolt 152 is rotatably connected with a clamping plate 156 via a rotating ring 155, and the front side of the clamping plate 156 near both sides is installed with a stabilizing rod 153 via a fixing plate 154;

[0039] The stabilizing rod 153 penetrates through the docking plate 151 , and can increase the stability of the clamping plate 156 when it moves. The back of the clamping plate 156 is also installed with a contact pad 10 .

[0040] A protective frame 5 is installed on the top of the test bench 4, and a fixing plate 6 is fixedly connected to the top of the protective frame 5 at both sides, and an air suction hood 8 is installed on the top of the fixing plate 6. Multiple rows of air holes 12 are opened at the top of the test bench 4 near both sides;

[0041] The top of the protection frame 5 is provided with an opening at the front position for easy operation, and the suction hood 8 is located above the working platform 11 .

[0042] An exhaust assembly 23 is installed on the top of the bottom plate 1. The exhaust assembly 23 includes a protective shell 231. Both sides of the protective shell 231 are provided with heat dissipation holes 232. A fan 233 is installed inside the protective shell 231. The outlet and inlet of the fan 233 are respectively provided with an exhaust pipe 24 and an air intake pipe 7.

[0043] The other end of the air intake pipe 7 is connected to the air intake hood 8. The heat dissipation holes 232 are used to assist in heat dissipation. The fan 233 can increase the air circulation on the test bench 4 during the air extraction process to assist in heat dissipation.

[0044] The working principle of the durability performance test device for a gearbox power take-off provided by the utility model is as follows:

[0045] First, a working platform 11 is installed on the test bench 4, and the drive unit 22 is installed on the test bench 4, and then the coupling 16 and the drive unit 22 are connected. A universal shaft 19 is installed at the other end of the coupling 16 through a torque meter 17 and a bearing seat 18, and an output end universal shaft 20 is installed at the top of the test bench 4 at both sides through a loading unit 21. Before the actual test, the gearbox power take-off under test is fixed on the working platform 11 through a special clamping assembly 15, and the input shaft and the output shaft are respectively connected to the universal shaft 19 and the output end universal shaft 20. The length of the universal shaft 19 is The position of the active end can be adjusted within a certain range to accommodate samples of different specifications. During the test, the speed, torque and duration of the input at each stage are set through computer software. After the program starts running, the speed and torque of the input shaft of the sample are controlled to meet the test requirements through the cooperation of the drive unit 22 and the loading unit 21. During the test, the software detects the input shaft speed, torque and sample lubricating oil temperature or shell temperature in real time, and draws an endurance test curve. The software can set parameter alarms and shutdown limits. If abnormal conditions such as torque exceeding the limit and temperature being too high occur, the machine can be shut down immediately and recorded.

[0046] Compared with the related art, the durability performance testing device for the gearbox power take-off provided by the utility model has the following beneficial effects:

[0047] In order to improve the accuracy and comprehensiveness of the data of the gearbox power take-off during the durability test, a working platform 11 is first installed on the test bench 4, and the drive unit 22 is installed on the test bench 4, and then the coupling 16 and the drive unit 22 are connected. A universal shaft 19 is installed at the other end of the coupling 16 through a torque meter 17 and a bearing seat 18, and an output end universal shaft 20 is installed at the top of the test bench 4 on both sides through a loading unit 21. Before the actual test, the gearbox power take-off under test is fixed to the working platform 11 through a special clamping assembly 15, and the input shaft and the output shaft are respectively connected to the universal shaft 19 and the output end universal shaft 20. The length and the position of the active end of the universal shaft 19 can be fixed. The software can be adjusted within a certain range to accommodate samples of different specifications. During the test, the speed, torque and duration of each stage input are set by computer software. After the program starts running, the speed and torque of the input shaft of the sample are controlled to meet the test requirements through the cooperation of the drive unit 22 and the loading unit 21. During the test, the software detects the input shaft speed, torque and sample lubricating oil temperature or shell temperature in real time, and draws a durability test curve. The software can set parameter alarms and shutdown limits. If there are abnormal conditions such as torque over-limit and temperature over-high, the machine can be shut down and recorded immediately. Through this structure, a reasonable output power can be set according to demand, so that the data of the gearbox power take-off durability performance test can be obtained more accurately and comprehensively.

[0048] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A durability performance testing device for a gearbox power take-off, characterized in that: include: Base plate; A test bench, wherein the test bench is fixedly connected to the top of the base plate, a driving unit is installed at a position near one side of the top of the test bench, a coupling is installed at the output end of the driving unit, a torque meter is installed at the output end of the coupling, a bearing seat is installed at the output end of the torque meter, a universal shaft is installed at the output end of the bearing seat, a loading unit is installed at a position near the other side of the top of the test bench, and an output-end universal shaft is installed at the output end of the loading unit; A working platform is installed on the top of the test bench, a support plate is installed on the top of the test bench near the back, a contact pad is installed on the front of the support plate, and a clamping assembly is installed on the top of the test bench near the front.

2. The durability performance testing device for a gearbox power take-off according to claim 1, characterized in that: A mounting frame is installed on one side of the test bench, and a control system is installed on the front of the mounting frame.

3. The durability performance testing device for a transmission power take-off according to claim 1, characterized in that: A power cabinet is installed on the top of the bottom plate, and a cabinet door is rotatably connected to the front of the power cabinet.

4. The durability performance testing device for a transmission power take-off according to claim 1, characterized in that: The clamping assembly includes a docking plate, the front side of the docking plate is threadedly connected to an adjusting bolt, one end of the back side of the adjusting bolt is rotatably connected to a clamping plate via a rotating ring, and the front side of the clamping plate near both sides is installed with a stabilizing rod via a fixing plate.

5. The durability performance testing device for a transmission power take-off according to claim 1, characterized in that: A protective frame is installed on the top of the test bench, and fixed plates are fixedly connected to the top of the protective frame at both sides, and an air suction hood is installed on the top of the fixed plate. Multiple rows of air holes are opened near the two sides of the top of the test bench.

6. The durability performance testing device for a transmission power take-off according to claim 1, characterized in that: An exhaust assembly is installed on the top of the base plate, and the exhaust assembly includes a protective shell. Heat dissipation holes are opened on both sides of the protective shell. A fan is installed inside the protective shell, and an exhaust pipe and an air intake pipe are installed at the outlet and inlet of the fan respectively.

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