Four-motor-driven large-torque test bench

Abstract

The utility model relates to the technical field of mechanical transmission testing, in particular to a four-motor-driven large-torque test bench, which comprises torque applying units which are symmetrically arranged at two ends of a base and are adjustable in distance, each torque applying unit comprises a reduction gearbox, an input end of each reduction gearbox is connected with a servo motor through two parallel shafts, and the servo motors are connected with a servo motor. The output end of the reduction gearbox is connected with a torque meter, the output end of the torque meter is connected with a torque meter connecting flange, the other end of the torque meter connecting flange can be connected with a test piece, and the base is further provided with a test piece tool between the two torque applying units. According to the utility model, power is provided for the speed reducer by adopting dual-motor input, so that larger torque is generated at the output end of the speed reducer, and the torque test requirement of a large test piece is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical drive test technical field especially, it relates to a four motor drive big torque test bench. BACKGROUND

[0002] The conventional torque test test bench usually only has single motor input, and the provided torque is limited, if the torque is to be increased, the motor with big torque output needs to be equipped, and such motor generally has big size and weight, and the cost is also high.

[0003] In order to improve the torque input, and limit the specification of input motor, double motor input can be used, such as patent CN104748984A - based on double motor control electric power steering test bench, auxiliary motor is increased on the basis of main motor, and test precision can be improved, but the effect of improving the loading torque of test bench is little, patent CN203604550U - shield machine agitator double motor drive speed reducer provides a speed reducer with double motor input, based on this, a test bench with low torque motor can be used to obtain high torque output, to meet the big torque test of heavy commercial vehicle axle, large shaft and other samples, and the problem needs to be solved in the case. UTILITY MODEL CONTENTS

[0004] The utility model discloses a four motor drive big torque test bench, which adopts symmetrical double motor parallel input at both ends to provide big torque for the test bench.

[0005] The utility model discloses a four motor drive big torque test bench, which adopts symmetrical double motor parallel input at both ends to provide big torque for the test bench.

[0006] Preferably, the torque applying unit is slidably connected to the base through a sliding groove arranged on the base, the base is provided with a lead screw mechanism, a lead screw of the lead screw mechanism is threadedly connected with the torque applying unit, and the lead screw mechanism is provided with a hand wheel for driving the lead screw to rotate.

[0007] Preferably, the base is provided with a locking device for locking the torque applying unit.

[0008] Preferably, the torque applying unit comprises a mounting base plate, the mounting base plate is slidably connected with the base through a sliding block and sliding groove cooperation, the upper surface of the mounting base plate is provided with a motor base, a speed reducer base and a support in parallel, the output shaft of the servo motor is fixedly connected with the input shaft of the speed reducer through a shaft coupling, the output shaft of the speed reducer is connected with an output flange, the other end of the output flange is connected with the torque instrument, and the support is provided with a backing plate for mounting the torque instrument.

[0009] Preferably, the output flange is uniformly provided with a ring of clamping grooves, the support is provided with a stall seat, and the two sides of the stall seat are respectively provided with a stall groove, and the stall groove and the corresponding clamping groove can be simultaneously embedded into the stall block.

[0010] Preferably, the shaft coupling is a laminated flexible shaft coupling.

[0011] The four-motor driving large-torque test bench has the advantages that: the four-motor driving large-torque test bench comprises torque applying units which are symmetrically arranged at two ends of a base and have an adjustable interval, the torque applying unit comprises a speed reducer, two servo motors are respectively connected with the input end of the speed reducer through two parallel shafts, a torque instrument is connected with the output end of the speed reducer, a torque instrument connecting flange is connected with the output end of the torque instrument, the other end of the torque instrument connecting flange can be connected with a test piece, and a test piece tooling is arranged between the two torque applying units of the base. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a perspective view of the four-motor driving large-torque test bench of the utility model;

[0013] Figure 2 It is a perspective view of the torque applying unit;

[0014] Figure 3 It is Figure 2 It is a partial enlarged view of A of

[0015] Figure 4 It is a front view of the torque applying unit.

[0016] BRIEF DESCRIPTION OF DRAWINGS

[0017] 1 - base, 2 - torque applying unit, 201 - mounting plate, 202 - motor base, 203 - reduction box base, 204 - support, 205 - reduction box, 206 - servo motor, 207 - coupling, 208 - output flange, 209 - torque meter, 210 - torque meter connecting flange, 211 - backing plate, 212 - locked-rotor seat, 213 - locked-rotor block, 3 - test piece tooling, 4 - screw rod mechanism. DETAILED DESCRIPTION

[0018] The utility model will be further explained in detail below in combination with the drawings and specific embodiments, and is not to limit the implementation scope of the utility model to this.

[0019] As Figures 1-4 shown, the four-motor driving large-torque test bench of the embodiment is illustrated by taking the torque test of heavy commercial vehicle axle as an example.

[0020] The test bench is installed on a base provided with a large number of horizontally arranged inverted T-shaped grooves on the top, mainly comprising torque applying units 2 symmetrically arranged at both ends of the base 1, and a test piece tooling 3 arranged between the torque applying units 2 at both ends for supporting the axle.

[0021] The torque applying unit 2 comprises a mounting plate 201, which is slidably connected with the base 1 through a sliding block and sliding groove cooperation. The base 1 is provided with a screw rod mechanism 4, which comprises a screw rod driven to rotate by a hand wheel, and the screw rod is threadedly connected with the mounting plate 201. This arrangement is to adjust the distance between the torque applying units 2 at both ends, so as to adapt to the test of axles of different lengths. The base 1 is also provided with a locking device for locking the torque applying units 2, so as to fix the torque applying units 2 after adjusting the distance between them.

[0022] The mounting plate 201 is sequentially and parallelly provided with a motor base 202, a reduction box base 203 and a support 204. The motor base 202 is fixed with a servo motor 206, the reduction box base 203 is fixed with a reduction box 205, and the support 204 is fixed with a backing plate 211. The input end of the reduction box 205 is provided with two parallel input shafts, which are respectively fixedly connected with the output shafts of two servo motors 206 through couplings 207. The output end of the reduction box 205 is provided with an output shaft, which is fixedly connected with an output flange 208. The output flange 208 is fixedly connected with a torque meter 209, and the output end of the torque meter 209 is connected with a torque meter connecting flange 210. The other end of the torque connecting flange 210 is fixedly connected with one end of a test piece, so as to apply torque to the test piece. The bottom end of the torque meter 209 is fixed to the backing plate 211.

[0023] The support 204 is further provided with a stall seat 212, which is in a U shape, and a stall groove is arranged on each side of the U-shaped stall seat 212. A flange plate with a circle of clamping grooves is coaxially arranged on the corresponding output flange 208. When the output flange 208 rotates to align the clamping grooves with the stall grooves, the stall block 213 can be embedded and clamped with the stall grooves and the clamping grooves, so as to prevent the output flange 208 from rotating.

[0024] During operation, the middle part of the test piece is placed on the two test piece tooling 3 and is constrained and fixed to prevent the test piece from falling. The torque applying units 2 at both ends are adjusted, the torque instrument connecting flanges 210 of the torque applying units 2 at both ends are fixedly connected with the two ends of the test piece through bolts, before the bolts are tightened, the torque applying units 2 are fixed by the stall seat 212 and the stall block 213 so as to prevent the torque applying units 2 from rotating, and then the bolts are tightened; after the bolts are tightened, the stall block 213 is removed to release the torque applying units 2, and the torque applying units 2 are fixed to prevent the torque applying units 2 from moving. After all preparations are completed, the four servo motors 206 at both ends are started, the torque is amplified through the two reduction boxes 205, and various different load torques under different working conditions are simultaneously applied to the test piece from both ends of the test piece according to the monitoring data of the torque instrument 209, so as to perform torque testing on the axle.

[0025] It should be finally pointed out that the above embodiments are only used to illustrate the technical solutions of the present application, and in order to facilitate the description of the technical solutions, the front, back, left, right, up, middle and down directions are set based on the drawings, but are not limited to the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A four-motor drive large torque test bench, characterized in that: The torque applying unit is slidably connected with the base through a sliding groove arranged on the base, the base is provided with a screw rod mechanism, a screw rod of the screw rod mechanism is threadedly connected with the torque applying unit, and the screw rod mechanism is provided with a hand wheel for driving the screw rod to rotate.

2. The four-motor driving large-torque test bench according to claim 1, characterized in that: The base is provided with a locking device for locking the torque applying unit.

3. The four-motor drive large torque test bench according to claim 1, characterized in that: The torque applying unit comprises a mounting bottom plate, the mounting bottom plate is slidably connected with the base through a sliding block and a sliding groove, an upper surface of the mounting bottom plate is provided in parallel with a motor base, a reduction box base and a support, an output shaft of the servo motor is fixedly connected with an input shaft of the reduction box through a shaft coupling, an output flange is connected with the output shaft of the reduction box, the other end of the output flange is connected with the torque instrument, and the support is provided with a backing plate for mounting the torque instrument.

4. The four-motor drive large torque test bench according to claim 1, characterized in that: The output flange is uniformly provided with a ring of clamping grooves, the support is provided with a stall seat, and the stall seat is provided with a stall groove on each side, the stall groove and the corresponding clamping groove can simultaneously embed a stall block.

5. A four-motor drive large torque test bench according to claim 4, characterized in that: ​

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