Loadable wheel end twin trawling test device

Abstract

The utility model discloses a loadable wheel end twin trawling testing device, which comprises a platform, a rotating speed driving assembly and a torque driving assembly, the rotating speed driving assembly and the torque driving assembly are positioned on the platform, a vertical load loading assembly is further arranged between the rotating speed driving assembly and the torque driving assembly, and the vertical load loading assembly is mounted on a sample support. The rotating speed driving assembly for controlling the rotating speed and the torque driving assembly for controlling the torque are arranged on the two sides of the tested workpiece respectively, and the vertical load loading assembly for providing the vertical load is arranged in the middle of the tested workpiece, so that wheel end loading and reliability testing can be performed on the tested workpiece at the same time by adopting an opposite dragging technology; according to the invention, the limitation of the traditional single test is eliminated, the test efficiency is obviously improved, various complex loads of the wheel end under the actual working condition are simulated, the actual working scene can be simulated more truly, the test result is more accurate and reliable, the dynamic load loading test is used, and the test precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the pair of drag platform, concretely relates to a loadable wheel end pair of drag testing device. BACKGROUND

[0002] The traditional pair of drag platform is mainly used for testing the basic parameters such as the rotating speed and torque of mechanical parts, but often ignores the influence of the complex load change borne by the wheel end on the performance of the mechanical parts in actual application. Therefore, developing a pair of drag platform capable of simulating the load change of the wheel end under real working conditions has important significance for improving the test precision and reliability of mechanical parts.

[0003] At present, the output end of the forklift reduction gearbox often needs to be subjected to static load loading test during the development stage. However, since the output end of the reduction gearbox will be subjected to dynamic load during the driving process of the forklift, theoretically, the output end dynamic load loading test also needs to be carried out. If the output end dynamic load loading test is not carried out during the development stage of the forklift reduction gearbox, actual road simulation test needs to be carried out on the forklift reduction gearbox assembled on the whole vehicle to replace the output end dynamic load loading test. Once the forklift reduction gearbox fails during the road simulation test, the forklift reduction gearbox needs to be disassembled and design changes need to be made, which consumes a lot of time and cost. The current forklift reduction gearbox test device cannot carry out the output end dynamic load loading test, and often uses the road simulation test of the whole vehicle instead. Once a failure occurs, a large amount of manpower and material resources need to be consumed for design changes, which is high in cost.

[0004] Patent publication number CN118244108A, patent name is a kind of motor pair of drag test mechanism and test equipment, it discloses "motor pair of drag test mechanism includes test table base, support frame, fixed torque measuring instrument, first motor and second motor;First motor is fixed to first support plate, and the one end of fixed torque measuring instrument is connected;Second motor is fixed to second support plate, and the other end of fixed torque measuring instrument is connected;Second motor and first motor are oppositely arranged, the axis of second motor and the axis of first motor are in same straight line, at this time, second motor and first motor are installed on support frame, and are installed on second support plate and first support plate respectively", the above-mentioned technology is the traditional motor pair of drag test device, the deficiency of this scheme is the scheme for the use of new energy automobile upper drive motor, cannot carry out the test of big speed ratio forklift reducer, also cannot realize wheel end load loading test. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model lies in: how to provide an end pair of drag test test device for dynamic load loading of a forklift reducer with a large speed ratio.

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] A loadable wheel end opposite-pulling test device, comprising a platform and a rotating speed driving assembly and a torque driving assembly located on the platform, and a vertical load loading assembly is further arranged between the rotating speed driving assembly and the torque driving assembly, and the vertical load loading assembly is installed to a sample support;

[0008] Further comprising a torque sensor one, one end of which is connected with the rotating speed driving assembly and the other end of which extends into the position of the sample support;

[0009] Further comprising a torque sensor two, one end of which is connected with the torque driving assembly and the other end of which extends into the position of the sample support.

[0010] The application designs a simple test device, rotating speed driving assemblies for controlling rotating speed and torque driving assemblies for controlling torque are arranged on both sides of the measured workpiece respectively, and a vertical load loading assembly for providing vertical load is arranged in the middle of the measured workpiece, through the opposite-pulling technology, the wheel end loading and reliability test of the measured workpiece (i.e. the forklift reducer) can be simultaneously carried out, the limitation of the traditional single test is got rid of, the test efficiency is significantly improved, meanwhile, various complex loads of the wheel end in the actual working condition are simulated, the actual working scene can be more truly simulated, the test result is more accurate and reliable, the dynamic load loading test is used, and the test precision is improved.

[0011] As a further scheme of the application, the vertical load loading assembly comprises a hydraulic machine support connected with the sample support, a hydraulic machine is arranged on the hydraulic machine support, and rolling assemblies capable of contacting the measured workpiece are arranged on the upper and lower parts of the measured workpiece respectively.

[0012] As a further scheme of the application, the rolling assemblies comprise upper rolling members and lower rolling members, wherein the upper rolling members are installed on the bottom of the hydraulic machine support, the lower rolling members are installed on the platform, and the upper rolling members and the lower rolling members are respectively located on the upper and lower sides of the output end of the measured workpiece.

[0013] As a further scheme of the application, the upper rolling members comprise two groups of hydraulic load wheels, wherein the top of the two groups of hydraulic load wheels is installed to the hydraulic machine support, and the bottom can roll and contact the output end of the measured workpiece under the driving of the hydraulic machine.

[0014] As a further scheme of the application, the lower rolling members comprise two groups of wheel shaft guide wheels, and strain gauges are installed on the wheel shaft guide wheels, wherein the bottom of the two groups of wheel shaft guide wheels is installed to the platform, and the top can roll and contact the output end of the measured workpiece when the measured workpiece moves downward.

[0015] As a further scheme of the application, the rotating speed driving assembly comprises a driving motor and a driving motor support, wherein the driving motor support is installed to the platform, and the driving motor is fixed to the driving motor support.

[0016] As a further scheme of the utility model: the bottom of the torque sensor one is installed to the platform through the support, one end of the torque sensor one is connected to the driving motor through the shaft coupling one, the other end of the torque sensor one is connected to the measured workpiece installed on the sample support through the universal shaft one;

[0017] The input end of the measured workpiece, the torque sensor one and the shaft center of the driving motor are on the same horizontal line.

[0018] As a further scheme of the utility model: the torque drive assembly includes the reducer assembly support and the reducer assembly, wherein the reducer assembly support is installed to the platform, and the reducer assembly is fixed on the reducer assembly support.

[0019] As a further scheme of the utility model: the bottom of the torque sensor two is installed to the platform through the support, one end of the torque sensor two is connected to the reducer assembly through the shaft coupling two, and the other end of the torque sensor two is connected to the measured workpiece installed on the sample support through the universal shaft two.

[0020] As a further scheme of the utility model: the output end of the measured workpiece, the torque sensor two and the shaft center of the reducer assembly are on the same horizontal line.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] 1. a simple test device is designed, the driving motor for controlling the rotating speed and the reducer assembly for controlling the torque are arranged at the two sides of the measured workpiece respectively, and the hydraulic machine for providing the vertical load is arranged in the middle of the measured workpiece, through adopting the towing technology, the wheel end loading and reliability test of the measured workpiece (namely the forklift reducer) can be carried out simultaneously, the limitation of traditional single test is got rid of, thereby the test efficiency is significantly improved, at the same time, various complex loads of the wheel end in the actual working condition are simulated, the actual working scene can be more truly simulated, the test result is more accurate and reliable, dynamic load loading test is used, and the test precision is improved.

[0023] 2. the dynamic load loading test of the forklift reducer output end can be realized through the test device in the development sample stage, the failure risk of the forklift reducer when subjected to the dynamic load is avoided in advance, and the time and money cost consumed by the subsequent whole vehicle road simulation test are reduced.

[0024] 3. the platform design has universality, can be suitable for the test of different types of mechanical parts, and improves the performance of the mechanical parts.

[0025] 4. The axle guide wheel and hydraulic load wheel of the present application uses high-strength guide wheel, which can not only transmit vertical pressure, but also ensure that the output end of the forklift reduction gearbox is in a rotating state during testing, uses dynamic load testing, and improves testing accuracy;

[0026] 5. The implementation of the present application not only promotes the innovation and development of mechanical component testing technology, but also provides strong technical support and experimental platform for scientific research and product development in related fields, and helps to promote the progress and development of the entire industry. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The structure schematic view of the loadable wheel end pair drag testing device of the present application embodiment is shown in the figure;

[0028] Figure 2 The structure schematic view of the vertical load loading assembly of the present application embodiment is shown in the figure;

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1, platform; 2, driving motor; 3, driving motor support; 4, torque sensor support one; 5, sample support; 6, torque sensor support two; 7, reducer assembly support; 8, reducer assembly; 9, torque sensor one; 10, torque sensor two; 11, coupling one; 12, universal shaft one; 13, universal shaft two; 14, coupling two; 15, axle guide wheel; 16, hydraulic load wheel; 17, hydraulic machine; 18, hydraulic machine support; 19, measured workpiece output end; 20, measured workpiece; 21, forklift reduction gearbox. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present application embodiment clearer, the technical scheme of the present application embodiment will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0032] REFERENCE Figure 1A loadable wheel end pair drag test device, comprising a platform 1 and a driving motor 2, a driving motor support 3, a torque sensor support one 4, a sample support 5, a torque sensor support two 6, a reducer assembly support 7, a reducer assembly 8, a torque sensor one 9, a torque sensor two 10, a coupling one 11, a universal shaft one 12, a universal shaft two 13, a coupling two 14, an axle guide wheel 15, a hydraulic load wheel 16, a hydraulic machine 17, a hydraulic machine support 18, a measured workpiece output end 19, a measured workpiece 20 (i.e. a forklift reducer) and a forklift reducer box 21 installed on the platform 1.

[0033] Referring to Figure 1 The driving motor 2 is installed on the driving motor support 3, the bottom of the driving motor support 3 is fixed on the top of the platform 1 by bolts or pins, and a mounting groove is formed in the driving motor support 3, wherein the driving motor 2 is installed on the driving motor support 3 by bolts or pins, and the output end of the driving motor 2 is located in the mounting groove.

[0034] Referring to Figure 1 And Figure 2 The sample support 5 is installed at the middle position of the top of the platform 1, the bottom of the sample support 5 is fixed on the platform 1 by bolts or pins, the hydraulic machine support 18 is installed on the side of the sample support 5 away from the driving motor 2, the hydraulic machine 17 is installed above the hydraulic machine support 18, and the hydraulic load wheel 16 is arranged below the hydraulic machine support 18, wherein the hydraulic machine 17 can drive the hydraulic load wheel 16 to descend to contact the measured workpiece output end 19 of the measured workpiece 20.

[0035] Further, the forklift reducer box 21 is installed on the side of the sample support 5 away from the driving motor 2 and below the hydraulic machine support 18, the measured workpiece 20 is installed on the forklift reducer box 21, and the input end of the measured workpiece 20 is arranged towards the driving motor 2.

[0036] Referring to Figure 1 The axle guide wheel 15 is also installed below the measured workpiece output end 19, wherein the bottom of the axle guide wheel 15 is installed on the platform 1 by a support, and a narrow gap ranging from 0.2mm to 1mm exists between the top of the axle guide wheel 15 and the measured workpiece output end 19; when the hydraulic machine 17 drives the hydraulic load wheel 16 to descend, the hydraulic load wheel 16 can contact the measured workpiece output end 19 and drive the measured workpiece output end 19 to contact the axle guide wheel 15; therefore, when the measured workpiece (i.e. the forklift reducer) rotates, it can drive the hydraulic load wheel 16 and the axle guide wheel 15 to rotate together.

[0037] Referring to Figure 1A torque sensor bracket one 4 is further installed between the driving motor bracket 3 and the sample bracket 5, the bottom of the torque sensor bracket one 4 is fixed to the platform 1 through bolts or pins, the top of the torque sensor bracket one 4 is provided with a torque sensor one 9, one end of the torque sensor one 9 is connected with the driving motor 2 through a coupling one 11, the other end of the torque sensor one 9 is connected to the input end of the measured workpiece 20 through a universal shaft one 12, and the universal shaft one 12 is a spherical universal shaft.

[0038] Referring to Figure 1 A torque sensor bracket two 6 is further installed between the reducer assembly bracket 7 and the sample bracket 5, the bottom of the torque sensor bracket two 6 is fixed to the platform 1 through bolts or pins, the top of the torque sensor bracket two 6 is provided with a torque sensor two 10, one end of the torque sensor two 10 is connected with the reducer assembly 8 through a coupling two 14, the other end of the torque sensor two 10 is connected to the output end of the measured workpiece 20 through a universal shaft two 13, and the universal shaft two 13 is a spherical universal shaft.

[0039] The platform and various brackets of the application can select high-strength alloy steel as the core material, combined with advanced welding and machining technology, to ensure the stability and durability of the rack structure under high-strength load; the platform, bracket and other structures of the device are carefully designed to form a stable support frame, providing a solid guarantee for testing.

[0040] Each bracket of the application adopts an adjustable support frame design, combined with a precise locking mechanism, to realize rapid adjustment and precise positioning of the support position to adapt to the testing needs of mechanical parts of different specifications and types.

[0041] The specific operation principle of the application is as follows:

[0042] All the brackets are placed on the cast iron platform 1, the driving motor 2 is installed on the driving motor fixed bracket 3, the torque sensor one 9 is installed on the torque sensor bracket one 4, the coupling one 11 part is installed between the driving motor fixed bracket 3 and the torque sensor bracket one 4, the center of the shafting is adjusted using a dial gauge, the sample is installed on the sample bracket 5, the 500N.m torque sensor one 9 is connected with the sample through the spherical universal shaft one 12, the torque sensor two 10 is installed on the torque sensor bracket two 6, and is connected through the spherical universal shaft two 13, the reducer assembly 8 is installed on the reducer assembly bracket 7, is connected through the coupling two 14, and the center of the shafting is adjusted using a dial gauge, all the workpieces are installed, the brackets are fixed using bolts to prevent displacement during the test.

[0043] The device is connected, the driving motor 2 and the reducer assembly 8 output rotation speed and torque, different pressures are applied to the hydraulic machine 17, the hydraulic load wheel 16 acts on the axle guide wheel 15 through the wheel; the hydraulic load wheel 16 transmits the pressure to the measured workpiece output end 9, and the axle guide wheel 15 stably supports the measured workpiece output end 9 below; during the process, when the driving motor 2 drives the measured workpiece output end 9 to rotate, the hydraulic load wheel 16 and the axle guide wheel 15 also rotate due to the rolling contact with the measured workpiece output end 4 and the action of the friction force; the strain gauge is pasted on the axle guide wheel 15, the axle vertical load can be measured, the torque sensor and the strain gauge are used for real-time monitoring and recording the rotation speed, the torque, the force and the like of the wheel end, the measurement system adopts high-precision sensors and advanced data acquisition technology, and the accuracy and the reliability of the test data are ensured; during the process, the motor temperature, fault diagnosis and the like can be monitored, and a plurality of test functions of the no-load operation are realized.

[0044] By changing the pressure applied by the hydraulic machine 17 and driving different rotation speeds and torques, the loading test of the forklift reducer output end dynamic load can be realized.

[0045] The test device can be connected with an external controller, the controller is responsible for the operation control of the whole test bench, including the realization of the functions of starting, stopping, speed regulation, loading and the like, test parameters and conditions are conveniently set, the test process is monitored, and the test results are displayed and recorded in real time. The controller adopts an existing conventional controller.

[0046] The above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and range of the technical solutions of the embodiments of the utility model.

Claims

1. A loadable wheel end pair test device comprising a platform (1) and a rotational speed drive assembly and a torque drive assembly on the platform (1), characterized in that A vertical load loading assembly is further arranged between the rotating speed driving assembly and the torque driving assembly, and is mounted to the sample support (5); The torque sensor one (9) is further arranged, and one end of the torque sensor one (9) is connected with the rotating speed driving assembly and the other end extends into the position of the sample support (5); The torque sensor two (10) is further arranged, and one end of the torque sensor two (10) is connected with the torque driving assembly and the other end extends into the position of the sample support (5).

2. A loadable wheel end pull testing device according to claim 1, wherein: The vertical load loading assembly comprises a hydraulic machine support (18) connected with the sample support (5), a hydraulic machine (17) arranged on the hydraulic machine support (18), and a rolling assembly capable of contacting the workpiece arranged on the upper and lower parts of the workpiece.

3. A loadable wheel end pair test device as in claim 2, wherein: The rolling assembly comprises an upper rolling member and a lower rolling member, wherein the upper rolling member is mounted on the bottom of the hydraulic machine support (18), the lower rolling member is mounted on the platform (1), and the upper rolling member and the lower rolling member are respectively arranged on the upper and lower sides of the output end of the workpiece.

4. A loadable wheel end pair test device as in claim 3, wherein: The upper rolling member comprises two groups of hydraulic load wheels (16), wherein the top of the two groups of hydraulic load wheels (16) is mounted on the hydraulic machine support (18), and the bottom can roll and contact the output end of the workpiece under the driving of the hydraulic machine (17).

5. A loadable wheel end pair test device as in claim 3, wherein: The lower rolling member comprises two groups of wheel shaft guide wheels (15), and strain gauges are arranged on the wheel shaft guide wheels (15), wherein the bottom of the two groups of wheel shaft guide wheels (15) is mounted on the platform (1), and the top can roll and contact the output end of the workpiece when the workpiece moves downward.

6. A loadable wheel end pair test device as described in claim 1 wherein: The rotating speed driving assembly comprises a driving motor (2) and a driving motor support (3), wherein the driving motor support (3) is mounted on the platform (1), and the driving motor (2) is fixed on the driving motor support (3).

7. A loadable wheel end pair test device as in claim 6, wherein: The bottom of the torque sensor one (9) is mounted on the platform (1) through a support, one end of the torque sensor one (9) is connected to the driving motor (2) through a coupling one (11), and the other end of the torque sensor one (9) is connected to the workpiece mounted on the sample support (5) through a universal shaft one (12). The input end of the workpiece, the torque sensor one (9) and the shaft of the driving motor (2) are on the same horizontal line.

8. A loadable wheel end pair test device as described in claim 1, wherein: The torque driving assembly comprises a reducer assembly support (7) and a reducer assembly (8), wherein the reducer assembly support (7) is mounted on the platform (1), and the reducer assembly (8) is fixed on the reducer assembly support (7).

9. A loadable wheel end pair test device as in claim 8, wherein: The bottom of the torque sensor two (10) is mounted on the platform (1) through a support, one end of the torque sensor two (10) is connected to the reducer assembly (8) through a coupling two (14), and the other end of the torque sensor two (10) is connected to the workpiece mounted on the sample support (5) through a universal shaft two (13).

10. A loadable wheel end pair test device as in claim 9, wherein: The output end of the workpiece, the torque sensor two (10) and the shaft of the reducer assembly (8) are on the same horizontal line.

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