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CN-224231285-U - Test bench for testing breaking moment of steering gear and bending rigidity of rack

CN224231285UCN 224231285 UCN224231285 UCN 224231285UCN-224231285-U

Abstract

The utility model relates to the technical field of steering systems, in particular to a test bench for testing the breaking moment of a steering gear and the bending rigidity of a rack. A test bench for testing the breaking moment of a steering gear and the bending rigidity of a rack comprises a base, a test clamping block, an angle adjusting assembly and a speed reducer, and is characterized in that a stand column is connected to the base, a height adjusting mechanism is connected to the top of the stand column, the height adjusting mechanism is connected with the test clamping block through a screw rod assembly, and the left side and the right side of the test clamping block are respectively connected with a torsion testing mechanism and a tension-compression testing mechanism through a left angle adjusting assembly and a right angle adjusting assembly. Compared with the prior art, the test board for testing the damage moment of the steering gear and the bending rigidity of the rack is simple in structure, convenient to operate and capable of testing the damage moment of the steering gear and the bending rigidity of the rack with high precision and high efficiency.

Inventors

  • GENG MINGYANG
  • ZHAO LEI
  • DUAN YANG
  • MU LIBING
  • XIA XUDONG
  • WANG ZHONGZHE
  • GAO WENZHENG
  • LIN HUIJUN

Assignees

  • 博世华域转向系统（烟台）有限公司

Dates

Publication Date
20260512
Application Date
20250429

Claims (9)

  1. 1. A test bench for testing the breaking moment of a steering gear and the bending rigidity of a rack comprises a base, a test clamping block, an angle adjusting assembly and a speed reducer, and is characterized in that a stand column (2) is connected to the base (1), a height adjusting mechanism (6) is connected to the top of the stand column (2), the height adjusting mechanism (6) is connected with the test clamping block (10) through a screw rod assembly, and the left side and the right side of the test clamping block (10) are respectively connected with a torsion testing mechanism (9) and a tension-compression testing mechanism (8) through a left angle adjusting assembly (11) and a right angle adjusting assembly (7).
  2. 2. The test bench for testing the breaking moment of the steering gear and the bending stiffness of the rack, as set forth in claim 1, is characterized in that the top of the base (1) is connected with the bottom of the upright post (2), and the bottom of the base (1) is connected with the test bench.
  3. 3. The test bench for testing the breaking moment and the bending stiffness of the rack of the steering engine according to claim 1 is characterized in that the bottom of the upright post (2) is connected with the base (1), the top of the upright post (2) is connected with the height adjusting mechanism through the fastening component (5), first lead screws (3) are respectively arranged on the left side and the right side of the upright post (2), the first lead screws (3) on the left side and the right side are connected with the test clamping block (10) through lead screw nuts, and the tops of the first lead screws (3) on the left side and the right side penetrate through the fastening component (5) and are connected with the first bevel gear (4).
  4. 4. The test bench for testing the breaking moment and the bending stiffness of the rack of the steering gear according to claim 1, wherein the height adjusting mechanism (6) comprises a first hand wheel, a first speed reducer and a second bevel gear, the bottom of the first speed reducer (6-2) is connected with the top of the fastening assembly (5), the input end of the first speed reducer (6-2) is connected with the first hand wheel (6-1), the left end and the right end of the output end of the first speed reducer (6-2) are respectively connected with the second bevel gear (6-3) in a shaft joint mode, and the second bevel gears (6-3) on the left side and the right side are respectively connected with the first bevel gears (4) on the top of the first lead screws (3) on the left side and the right side in a meshed mode.
  5. 5. The test bench for testing the breaking moment and the bending stiffness of the rack of the steering gear according to claim 1, wherein the torsion test mechanism (9) comprises a torsion test seat, a second speed reducer, a sliding block, a sliding rail, a rack, a transmission gear and a torque output connecting piece, the back surface of the torsion test seat (9-5) is connected with a test clamping block (10) through a left angle adjusting component (11), the inner side of the front surface of the torsion test seat (9-5) is provided with a sliding rail (9-4), the sliding rail (9-4) is connected with the sliding block (9-3), the sliding block (9-3) is connected with the second screw (9-8) through a screw nut, one end of the second screw (9-8) is connected with one side of the torsion test seat (9-5), the other end of the second screw (9-8) is connected with the output end of the second speed reducer (9-1), the second speed reducer (9-1) is connected with the other side of the torsion test seat (9-5), the sliding block (9-3) is connected with the sliding block (9-2), the rack (9-2) is meshed with the transmission gear (9-6), the other end of the rotating shaft (9-9) penetrates through the bottom of the torsion test seat (9-5) and is connected with the torque output connecting piece (9-7).
  6. 6. The test bench for testing the breaking moment and the bending stiffness of the rack of the steering gear according to claim 5, wherein the torsion test seat (9-5) is of an L-shaped structure, and side plates connected with one end of the second screw rod (9-8) and connected with the second speed reducer (9-1) are respectively arranged on the left side and the right side of the torsion test seat (9-5).
  7. 7. The test bench for testing the breaking moment and the bending stiffness of the rack of the steering engine according to claim 1, wherein the tension and compression testing mechanism (8) comprises a tension and compression testing seat, a second hand wheel, a trapezoidal screw rod, a connecting flange, a worm and a worm wheel, the back surface of the tension and compression testing seat (8-1) is connected with a test holding clamp block (10) through a right-side angle adjusting assembly (7), the front surface of the tension and compression testing seat (8-1) is connected with one end of the worm (8-5) through the worm connecting seat, the other end of the worm (8-5) is connected with the second hand wheel (8-3), one side of the worm (8-5) is meshed with a worm wheel (8-6), the worm wheel (8-6) is connected with a sliding block on the trapezoidal screw rod (8-2) in a meshed mode, and the bottom of the screw rod of the trapezoidal screw rod (8-2) is connected with the connecting flange (8-4) through the tension and compression testing seat (8-1).
  8. 8. The test bench for testing the breaking moment of the steering gear and the bending stiffness of the rack according to claim 7, wherein the tension and compression test seat (8-1) is of an L-shaped structure.
  9. 9. A test bench for testing the breaking moment of a steering gear and the bending stiffness of a rack gear according to claim 7, wherein one end of the connecting flange (8-4) is connected with a trapezoidal screw rod (8-2), the other end of the connecting flange (8-4) is connected with a force application rod (8-7), and a force sensor (8-8) is connected to the force application rod (8-7).

Description

Test bench for testing breaking moment of steering gear and bending rigidity of rack Technical Field The utility model relates to the technical field of steering systems, in particular to a test bench for testing the breaking moment of a steering gear and the bending rigidity of a rack. Background The steering gear is a key core component in an automobile steering system, and is connected with a steering intermediate shaft and a steering rocker arm left and right. The steering wheel can turn the steering wheel into swing of a steering rocker arm or linear reciprocating motion of a rack shaft, and the electric power steering machine can also provide steering power for a steering system. In the running process of the automobile steering machine, the steering mechanism is operated, and due to the factors of running road conditions, front axle load, steering machine torsion resistance, rack bending rigidity and the like, the wheels bear the weight of the automobile body and rub with the ground, so that damping is generated. The capability of the steering gear capable of bearing large torque impact and the bending capability of the rack during running of the vehicle directly influence the running safety of the vehicle. The damage moment of the steering gear is the capability of the input shaft gear and the rack of the steering gear to resist the impact of large torque brought by the input shaft end under some extreme working conditions. The bending stiffness of the rack is the capability of the rack to elastically deform itself when the rack is impacted by a road surface during running of a vehicle. Because of the importance of the steering engine in a steering system, a breaking moment test and a rack bending stiffness test are important test items related to steering safety. Disclosure of Invention The utility model provides a test board for testing the breaking moment and the bending rigidity of a rack of a steering gear, which aims to overcome the defects of the prior art, has a simple structure and convenient operation, and can test the breaking moment and the bending rigidity of the rack of the steering gear with high precision and high efficiency. In order to achieve the aim, the test bench for testing the breaking moment of the steering engine and the bending stiffness of the rack is designed and comprises a base, a test clamping block, an angle adjusting assembly and a speed reducer, and is characterized in that the base is connected with a stand column, the top of the stand column is connected with a height adjusting mechanism, the height adjusting mechanism is connected with the test clamping block through a screw rod assembly, and the left side and the right side of the test clamping block are respectively connected with a torsion testing mechanism and a tension-compression testing mechanism through a left angle adjusting assembly and a right angle adjusting assembly. The top of base be connected with the bottom of stand, the bottom of base is connected with the test bench. The bottom of the upright post is connected with the base, the top of the upright post is connected with the height adjusting mechanism through the fastening component, first lead screws are respectively arranged on the left side and the right side of the upright post, the first lead screws on the left side and the right side are connected with the test clamping block through lead screw nuts, and the tops of the first lead screws on the left side and the right side penetrate through the fastening component and are connected with the first bevel gear. The height adjusting mechanism comprises a first hand wheel, a first speed reducer and a second bevel gear, wherein the bottom of the first speed reducer is connected with the top of the fastening assembly, the input end of the first speed reducer is connected with the first hand wheel, the left end and the right end of the output end of the first speed reducer are respectively connected with the second bevel gear in a shaft way, and the second bevel gears on the left side and the right side are respectively connected with the first bevel gears on the tops of the first lead screws on the left side and the right side in a meshed way. The torsion testing mechanism comprises a torsion testing seat, a second speed reducer, a sliding block, a sliding rail, a rack, a transmission gear and a torque output connecting piece, wherein the back surface of the torsion testing seat is connected with a testing holding clamp block through a left angle adjusting component, the sliding rail is arranged on the inner side of the front surface of the torsion testing seat, the sliding block is connected onto the sliding rail and connected with the second screw rod through a screw nut, one end of the second screw rod is connected with one side of the torsion testing seat, the other end of the second screw rod is connected with the output end of the second speed reducer, the second speed reducer is connected