A loading test bench for a wheel side speed reducer

Abstract

The present invention discloses a loading test bench for a wheel side speed reducer, belonging to the technical field of speed reducer testing. The loading test bench for the wheel side speed reducer includes two sets of tooling components, a first coupling, a driving motor, a loading motor, and two torque meters. The two sets of tooling components are symmetrically arranged on both sides of the first coupling. One speed reducer can be arranged on each set of tooling components. The first coupling is used to connect the two speed reducers. The driving motor and the loading motor are respectively arranged on the sides of the two speed reducers facing away from each other. One torque meter is connected to the driving motor and one speed reducer, and the other torque meter is connected to the loading motor and the other speed reducer. The loading test bench for the wheel side speed reducer of the present invention can fully verify the performance of the speed reducer, improve the safety and reliability of the loading test of the wheel side speed reducer, and has a simple structure and is convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of reducer testing, and particularly to a loading test bench for a wheel-side reducer. Background Art

[0002] Large transport mining trucks are large vehicles used in the mining industry for efficient loading and transportation. The wheel-side reducer is a key driving component of large transport mining trucks. Before leaving the factory, a loading test needs to be carried out to fully verify the performance indicators of the wheel-side reducer, minimize risks, and increase its reliability. The loading test operation of the hub-driven reducer is difficult and the structure is complex.

[0003] Therefore, there is an urgent need for a loading test bench for a wheel-side reducer to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a loading test bench for a wheel-side reducer, which can fully verify the performance of the reducer, improve the safety and reliability of the loading test of the wheel-side reducer, has a simple structure and is convenient to use.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A loading test bench for a wheel-side reducer, comprising:

[0007] A first coupling;

[0008] Two sets of tooling components, symmetrically arranged on both sides of the first coupling. Each set of tooling components can be provided with a reducer, and the first coupling is used to connect the two reducers;

[0009] A driving motor and a loading motor, respectively arranged on the sides of the two reducers facing away from each other;

[0010] Two torque meters, one torque meter connecting the driving motor and one reducer, and the other torque meter connecting the loading motor and the other reducer.

[0011] Optionally, the tooling component includes a tooling shaft, and the tooling shaft connects the torque meter and the reducer.

[0012] Optionally, it further includes a diaphragm coupling. One end of the tooling shaft is provided with a flange, and the other end is provided with an external spline. The diaphragm coupling connects the flange and the torque meter, and the external spline connects the internal spline input shaft of the reducer.

[0013] Optionally, the fixed end of the reducer includes a first flange, and the tooling component includes a fixed bracket, and the first flange is detachably connected to the fixed bracket.

[0014] Optionally, the output end of the speed reducer includes a second flange and a third flange, and the tooling assembly includes:

[0015] A first cylindrical tooling, detachably connected to the second flange;

[0016] An annular tooling, detachably connected to the third flange, and the first cylindrical tooling is detachably connected to the annular tooling;

[0017] A second cylindrical tooling, covering the output end of the speed reducer, and the second cylindrical tooling is detachably connected to the annular tooling and the first coupling respectively.

[0018] Optionally, the tooling assembly includes a roller, the roller includes a fixed seat and a roller rotatably connected to the fixed seat, and the second cylindrical tooling is rotatably connected to the fixed seat through the roller.

[0019] Optionally, the first coupling is a drum-shaped tooth coupling.

[0020] Optionally, there are two driving motors, and the two driving motors are connected through a second coupling; and / or

[0021] There are two loading motors, and the two loading motors are connected through a second coupling.

[0022] Optionally, it further includes two accompanying test gearboxes, one accompanying test gearbox is connected to the driving motor and the torque meter, and the other accompanying test gearbox is connected to the loading motor and the other torque meter.

[0023] Optionally, the accompanying test gearbox is connected to the driving motor through a third coupling.

[0024] Advantages of the present invention:

[0025] The loading test bench for a wheel side speed reducer provided by the present invention can fully verify the performance of the speed reducer. After the speed reducer is qualified, it is then shipped out of the factory, greatly improving the stability of the wheel side speed reducer during use at the customer site; moreover, the structure adopted by the loading test bench is simple, easy to build, convenient to operate, and saves test costs; the loading test bench has strong versatility and interchangeability, can be repeatedly tested, and thus reduces the loading test cost. The loading test bench is completely symmetrical on both sides with the center of the first coupling as the symmetry line. The driving motor is on the input side and provides the corresponding speed according to the test requirements, and the loading motor is on the output side and provides the loading torque according to the test requirements, and can simultaneously test two speed reducers, improving the test efficiency. Description of the Drawings

[0026] Figure 1It is a cross-sectional view of the speed reducer provided by the specific embodiment of the present invention installed on the loading test bench of the wheel-side speed reducer;

[0027] Figure 2 It is a partial cross-sectional view of the speed reducer provided by the specific embodiment of the present invention installed on the loading test bench of the wheel-side speed reducer;

[0028] Figure 3 It is a schematic diagram of the second cylindrical tooling provided by the specific embodiment of the present invention installed on the idler roller.

[0029] In the figure:

[0030] 100, speed reducer; 101, first flange; 102, second flange; 103, third flange;

[0031] 1, driving motor; 2, loading motor; 3, torque meter; 4, tooling assembly; 41, tooling shaft; 42, fixed bracket; 43, first cylindrical tooling; 44, annular tooling; 45, second cylindrical tooling; 46, idler roller; 461, fixed seat; 462, roller; 47, bearing seat; 48, bearing; 5, accompanying test gearbox; 6, first coupling; 7, diaphragm coupling; 8, second coupling; 9, third coupling; 10, half coupling. Specific Embodiment

[0032] To make the technical problems solved by the present invention, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0033] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include contact between the first and second features not directly but through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0035] This embodiment provides a loading test bench for a wheel side speed reducer, as Figure 1 and Figure 2 shown, which includes two sets of tooling components 4, a first coupling 6, a driving motor 1, a loading motor 2 and two torque meters 3; specifically, the two sets of tooling components 4 are symmetrically arranged on both sides of the first coupling 6, and one speed reducer 100 can be arranged on each set of tooling components 4. The first coupling 6 is used to connect the two speed reducers 100; the driving motor 1 and the loading motor 2 are respectively arranged on one side of the two speed reducers 100 facing away from each other; one torque meter 3 connects the driving motor 1 and one speed reducer 100, and the other torque meter 3 connects the loading motor 2 and the other speed reducer 100.

[0036] The relative positions of the two sets of tooling components 4, the driving motor 1, the loading motor 2 and the two torque meters 3 are fixed. The test of the speed reducer 100 using the loading test bench for the wheel side speed reducer includes the following steps. First, the two speed reducers 100 are arranged on the two tooling components 4, and the output ends of the two speed reducers 100 are connected through the first coupling 6. The input ends of the two speed reducers 100 are respectively connected to the corresponding two torque meters 3; then, the driving motor 1 is started, and the power is sequentially transmitted through the torque meter 3, the two speed reducers 100, the other torque meter 3 and the loading motor 2. The loading motor 2 can be loaded according to requirements, and the magnitude of the load torque can be adjusted.

[0037] During this process, the torque measured by the torque meter 3 near the driving motor 1 is T1, and the rotational speed is n1; the torque measured by the torque meter 3 near the loading motor 2 is T2, and the rotational speed is n2. Thus, it can be calculated that:

[0038] The input power of the speed reducer 100 near the driving motor 1 is P1, and P1 = T1 × n1 / 9550;

[0039] The output power of the speed reducer 100 near the loading motor 2 is P2, and P2 = T2 × n2 / 9550;

[0040] The total efficiency of the two speed reducers 100 is η 总 , η总 = P2 / P1 × 100%;

[0041] Since the structures of the two speed reducers 100 are the same and the working conditions are similar, it can be approximately considered that the efficiencies of the two speed reducers 100 are equal. Then the efficiency of one speed reducer 100 is η, and η = (η 总 ) 1 / 2 .

[0042] In addition, temperature detection can also be carried out by setting a temperature sensor on the speed reducer 100, vibration detection can be carried out by setting a vibration sensor, and noise detection can be carried out by a noise meter; life test can be carried out by long-term loading, vibration test can be carried out by increasing the torque size in sequence; and by increasing the speed in sequence, the speed resonance point can be found, etc.

[0043] In this embodiment, the loading test bench can fully verify the performance of the speed reducer 100. After the speed reducer 100 is qualified, it is then shipped out of the factory, greatly improving the stability of the wheel side speed reducer during use at the customer site; and the structure adopted by the loading test bench is simple, easy to build, convenient to operate, and saves test costs; the loading test bench has strong versatility and interchangeability, can be tested repeatedly, and thus reduces the loading test cost. The loading test bench is symmetric about the center of the first coupling 6, and is completely symmetric on both sides. The driving motor 1 is the input side and provides the corresponding speed according to the test needs, and the loading motor 2 is the output side and provides the loading torque according to the test needs, and can test the two speed reducers 100 at the same time, improving the test efficiency.

[0044] Specifically, during the test process, the input speed and torque size can refer to the prior art and will not be elaborated here.

[0045] In this embodiment, as Figure 1 and Figure 2 shown, the first coupling 6 is a drum-shaped tooth coupling. The drum-shaped tooth coupling belongs to a rigid-flexible coupling and has the advantages of axial deviation compensation capabilities such as radial, axial, and angular directions, large load-bearing capacity, high transmission efficiency, and low noise, improving the transmission efficiency between the two speed reducers 100, reducing noise, avoiding affecting the test results of the efficiency and noise of the speed reducer 100, and improving the test accuracy and reliability of the loading test bench.

[0046] Optionally, as Figure 1 shown, there are two driving motors 1. The two driving motors 1 are connected by a second coupling 8, and the two driving motors 1 drive simultaneously to increase the output torque, so that the loading test bench can use two relatively small-sized motors to drive the large-torque speed reducer 100, reducing costs; similarly, optionally, there are two loading motors 2, and the two loading motors 2 are connected by a second coupling 8. Specifically, the second coupling 8 is a diaphragm coupling. Specifically, both the driving motor 1 and the loading motor 2 can use frequency conversion motors, etc., without limitation.

[0047] Alternatively, if Figure 1 and Figure 2 As shown, the loading test bench also includes two accompanying test gearboxes 5, one accompanying test gearbox 5 is connected to the driving motor 1 and the torque meter 3, and the other accompanying test gearbox 5 is connected to the loading motor 2 and the other torque meter 3, and the speed or torque is adjusted through the accompanying test gearbox 5. Further optionally, one accompanying test gearbox 5 is connected to the driving motor 1 through a third coupling 9. In this embodiment, the third coupling 9 is a diaphragm coupling, and the diaphragm coupling connects the output shaft of the driving motor 1 and the input shaft of the accompanying test gearbox 5. Similarly, another accompanying test gearbox 5 is connected to the loading motor 2 through the third coupling 9, and the diaphragm coupling connects the output shaft of the loading motor 2 and the input shaft of the accompanying test gearbox 5.

[0048] In this embodiment, Figure 2 As shown, the torque meter 3 is a flange type torque meter 3 , and a half coupling 10 is installed on the output shaft of the companion test gearbox 5 , and the half coupling 10 is connected to the flange type torque meter 3 .

[0049] Alternatively, if Figure 2 As shown, the tooling assembly 4 includes a tooling shaft 41, and the tooling shaft 41 is connected to the torque meter 3 and the reducer 100. Specifically, the tooling shaft 41 and the torque meter 3 are connected through a coupling. In this embodiment, a flange is provided at one end of the tooling shaft 41, and an external spline is provided at the other end. The external spline is connected to the internal spline input shaft of the reducer 100, and the flange and the torque meter 3 are connected through a diaphragm coupling 7.

[0050] Since the diaphragm coupling has the advantages of high transmission efficiency and shock absorption, in this embodiment, the couplings used in multiple places are all diaphragm couplings to improve the transmission efficiency of the loading test bench and improve the measurement accuracy and reliability of the reducer 100.

[0051] In this embodiment, Figure 2 As shown, the fixed end of the reducer 100 includes a first flange 101, and the tooling assembly 4 includes a fixed bracket 42. The first flange 101 is detachably connected to the fixed bracket 42. The fixed bracket 42 can be fixed on the ground or a frame to fix the fixed end of the reducer 100. Specifically, the fixed bracket 42 includes a base portion and a flange portion that are connected to each other. The flange portion is connected to the first flange 101, and the base portion is fixed on the ground to support the flange portion. Furthermore, a bearing seat 47 is connected to the fixed bracket 42, and a bearing 48 is installed on the bearing seat 47. The tooling shaft 41 is rotatably connected to the bearing seat 47 through the bearing 48, thereby realizing auxiliary support for the tooling shaft 41 and making the operation more stable. Specifically, the bearing seat 47 is installed on the side of the flange portion away from the first flange 101.

[0052] In this embodiment, Figure 2As shown, the output end of the speed reducer 100 includes a second flange 102 and a third flange 103. After the input shaft of the speed reducer 100 inputs power, through internal gear transmission, it drives the second flange 102 and the third flange 103 to rotate. Specifically, the tooling assembly 4 includes a first cylindrical tooling 43, an annular tooling 44, and a second cylindrical tooling 45. The first cylindrical tooling 43 is detachably connected to the second flange 102; the annular tooling 44 is detachably connected to the third flange 103, and the first cylindrical tooling 43 is detachably connected to the annular tooling 44; the second cylindrical tooling 45 covers the output end of the speed reducer 100, and the second cylindrical tooling 45 is respectively detachably connected to the annular tooling 44 and the first coupling 6.

[0053] Specifically, the second flange 102 is connected to the bottom of the first cylindrical tooling 43 by bolts; further, the bottom of the first cylindrical tooling 43 has a through hole, and the speed reducer 100 passes through the through hole; the speed reducer 100 passes through the annular tooling 44. Specifically, the annular tooling 44 includes two semi-circular plates, and the first cylindrical tooling 43, the third flange 103, and the second cylindrical tooling 45 are respectively connected to the two semi-circular plates by bolts, which is convenient for installation and fixation with the speed reducer 100; specifically, the mouths of the second cylindrical tooling 45 and the first cylindrical tooling 43 are respectively provided with flanges bent outward, and the flanges are respectively connected to the semi-circular plates. Further, three circles of connection holes are provided on the annular tooling 44. The connection holes in the innermost circle are connected to the third flange 103, the connection holes in the middle circle are connected to the first cylindrical tooling 43, and the connection holes in the outermost circle are connected to the second cylindrical tooling 45. Further, the first cylindrical tooling 43 and the third flange 103 are located on the same side of the annular tooling 44, and the second cylindrical tooling 45 is located on the other side of the annular tooling 44.

[0054] The bottom of the second cylindrical tooling 45 is connected to the drum tooth coupling by bolts, realizing the connection of the output ends of two speed reducers 100 through the drum tooth coupling, with a simple structure and convenient disassembly and assembly.

[0055] Since the output end of the speed reducer 100 is in a cantilever state, it is inevitable that there will be a drooping deformation phenomenon during operation. Optionally, as Figures 1 - 3 shown, the tooling assembly 4 includes a supporting roller 46. The supporting roller 46 includes a fixed seat 461 and a roller 462 rotatably connected to the fixed seat 461. The fixed seat 461 is fixed to the ground or a frame, and the side wall of the second cylindrical tooling 45 is rotatably connected to the fixed seat 461 through the roller 462. Auxiliary support is provided through the supporting roller 46 to eliminate or reduce the drooping deformation of the output end. By setting the fixed seat 461, the support structure is fixed. By setting the roller 462, the rotational resistance to the output end of the speed reducer 100 is reduced, the rotational influence of the supporting roller 46 on the speed reducer 100 is reduced, and the measurement accuracy and reliability of the loading test bench are improved.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A loading test bench for a wheel side speed reducer, characterized in that, Comprising: A first coupling (6); Two sets of tooling components (4), symmetrically arranged on both sides of the first coupling (6), and a speed reducer (100) can be arranged on each set of the tooling components (4), and the first coupling (6) is used to connect the two speed reducers (100); A driving motor (1) and a loading motor (2), respectively arranged on the sides of the two speed reducers (100) facing away from each other; Two torque meters (3), one torque meter (3) connects the driving motor (1) and one speed reducer (100), and the other torque meter (3) connects the loading motor (2) and the other speed reducer (100); The output end of the speed reducer (100) includes a second flange (102) and a third flange (103), and the tooling component (4) includes: A first cylindrical tooling (43), detachably connected to the second flange (102); An annular tooling (44), detachably connected to the third flange (103), and the first cylindrical tooling (43) is detachably connected to the annular tooling (44); A second cylindrical tooling (45), covering the output end of the speed reducer (100), and the second cylindrical tooling (45) is detachably connected to the annular tooling (44) and the first coupling (6) respectively; The annular tooling (44) includes two semi-circular plates, and the first cylindrical tooling (43), the third flange (103) and the second cylindrical tooling (45) are respectively connected to the two semi-circular plates by bolts; The mouths of the second cylindrical tooling (45) and the first cylindrical tooling (43) are respectively provided with flanges bent outwards, and the flanges are respectively connected to the semi-circular plates; The annular tooling (44) is provided with three circles of connection holes, the innermost circle of connection holes is connected to the third flange (103), the middle circle of connection holes is connected to the first cylindrical tooling (43), and the outermost circle of connection holes is connected to the second cylindrical tooling (45).

2. The loading test bench for the wheel side speed reducer according to claim 1, characterized in that, The tooling component (4) includes a tooling shaft (41), and the tooling shaft (41) connects the torque meter (3) and the speed reducer (100).

3. The loading test bench for the wheel side speed reducer according to claim 2, characterized in that, It further includes a diaphragm coupling (7), one end of the tooling shaft (41) is provided with a flange plate, and the other end is provided with an external spline. The diaphragm coupling (7) connects the flange plate and the torque meter (3), and the external spline connects the internal spline input shaft of the speed reducer (100).

4. The loading test bench for the wheel side speed reducer according to claim 2, characterized in that, The fixed end of the speed reducer (100) includes a first flange (101), and the tooling component (4) includes a fixed bracket (42), and the first flange (101) is detachably connected to the fixed bracket (42).

5. The loading test bench for the wheel side speed reducer according to claim 1, characterized in that The tooling component (4) includes a roller (46), and the roller (46) includes a fixed seat (461) and a roller (462) rotatably connected to the fixed seat (461), and the second cylindrical tooling (45) is rotatably connected to the fixed seat (461) through the roller (462).

6. The loading test bench for the wheel side speed reducer according to any one of claims 1-5, characterized in that, The first coupling (6) is a drum-shaped tooth coupling.

7. The loading test bench for the wheel side speed reducer according to any one of claims 1-5, characterized in that two driving motors (1) are provided, and the two driving motors (1) are connected by a second coupling (8); and / or two loading motors (2) are provided, and the two loading motors (2) are connected by a second coupling (8).

8. The loading test bench for the wheel side speed reducer according to any one of claims 1-5, characterized in that, It further includes two accompanying test gearboxes (5). One accompanying test gearbox (5) is connected to the driving motor (1) and the torque meter (3), and the other accompanying test gearbox (5) is connected to the loading motor (2) and the other torque meter (3).

9. The loading test bench for the wheel side speed reducer according to claim 8, characterized in that, The accompanying test gearbox (5) is connected to the driving motor (1) through a third coupling (9).

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