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CN-120868103-B - Multidirectional swing test bed for hydraulic motor

CN120868103BCN 120868103 BCN120868103 BCN 120868103BCN-120868103-B

Abstract

The application relates to a multidirectional swing test bed for a hydraulic motor, which relates to the technical field of inspection and detection of the hydraulic motor and comprises a base, wherein two groups of upright posts II which are in rectangular distribution are arranged on the upper side of the base, a top plate is commonly arranged at the upper ends of all the upright posts II, the upright posts comprise a swing mechanism, a clamping mechanism and a deflection mechanism, the mounting position of the motor is changed through the cooperation of the clamping mechanism and the deflection mechanism, the complexity of manual adjustment is avoided, the detection efficiency is improved, multidirectional swing is applied to the motor through the cooperation of the swing mechanism and the clamping mechanism, the rotating speed stability of the motor under the swing condition is observed, the defect of static test is effectively overcome, and the prediction capability of a test result on practical application is remarkably enhanced.

Inventors

  • ZHENG ZHIJIAN
  • Wu Ermiao
  • ZHAI ZHENYU
  • ZHANG HONGJUAN
  • WU YINGHUA
  • ZHANG CHAO
  • WANG XUYING
  • LI CHENGZHI
  • WANG JIAYING

Assignees

  • 国家智能制造装备产品质量监督检验中心(浙江)

Dates

Publication Date
20260505
Application Date
20250728

Claims (7)

  1. 1. The utility model provides a multidirectional swing test bed of hydraulic motor, includes base (1), and two sets of stand two (8) that are rectangular distribution are installed to base (1) upside, and roof (6), its characterized in that are installed jointly to all stand two (8) upper ends: the device comprises a swinging mechanism (2) and a clamping mechanism (3), wherein the clamping mechanism (3) comprises guide groove plates (301) which are arranged on all upright posts II (8) in a sliding manner, sliding plates (303) are arranged between the inner walls of the guide groove plates (301) in a sliding manner, and a group of symmetrically arranged mounting brackets (309) are arranged above the sliding plates (303); The swinging mechanism (2) comprises a swinging motor (202) arranged on the top plate (6), a rotary table (203) is arranged at the driving end of the swinging motor (202), a swinging rod I (204) with the lower end hinged with the side surface of the guide groove plate (301) is hinged at the side surface edge of the rotary table (203), a cross rod (205) is commonly arranged on a group of upright posts II (8), and a group of swinging rods II (206) with the lower end hinged with the upper side of the sliding plate (303) are hinged at the side surface of the cross rod (205); the device also comprises a deflection mechanism (4), wherein the deflection mechanism (4) comprises a plurality of flange plates (401) which are rotatably arranged on the side surfaces of the corresponding mounting brackets (309), positioning holes (310) which are the same as the inner diameter of the flange plates (401) are formed in the side surfaces of the mounting brackets (309), and a deflection motor (402) with a driving end connected with the same-side toothed ring (403) in a gear way is arranged on the side surface of one mounting bracket (309); the test assembly is also included; A supporting mechanism (5) is arranged between the two mounting brackets (309) on the upper side of the sliding plate (303), the supporting mechanism (5) comprises a mounting seat (501) with two upper and lower distribution chambers arranged inside, and a supporting seat (506) with an arc upper side is arranged above the mounting seat (501); a second piston (505) connected with the supporting seat (506) is arranged in the upper cavity in a sliding way, and a plurality of springs (508) which are uniformly distributed are connected between the second piston (505) and the inner bottom surface of the upper cavity; The inner wall of the lower cavity is provided with a connecting pipe (502) communicated with the upper cavity, a first piston (503) matched with the connecting pipe is arranged in the lower cavity in a sliding manner, a pressed piece (504) extending to the outside of the mounting seat (501) is arranged on the side surface of the first piston (503), and hydraulic oil is filled in the area, below the second piston (505), of the lower cavity and the upper cavity; The compression piece (504) is extruded, the piston I (503) is driven to move towards the connecting pipe (502), hydraulic oil in the lower cavity is pressed into the upper cavity through the connecting pipe (502), the piston II (505) is pushed to rise, the spring (508) is lengthened, the supporting seat (506) is driven to support the motor, the compression of the compression piece (504) is relieved, the spring (508) is contracted to pull the piston II (505) and the supporting seat (506) to descend, the support to the motor is relieved, interference with the supporting seat (506) during rotation of the subsequent motor is avoided, and meanwhile, the descending piston II (505) can also press the hydraulic oil in the upper cavity into the lower cavity.
  2. 2. The multi-directional swing test stand of a hydraulic motor according to claim 1, wherein the clamping mechanism (3) further comprises a plurality of square grooves (304) arranged below the corresponding mounting brackets (309), the two square grooves (304) are internally provided with two-way screws (305) in a rotating mode, and one side of the sliding plate (303) is provided with a fixed motor (308) with a driving end connected with one end of each two-way screw (305).
  3. 3. The multi-directional swing test stand of a hydraulic motor according to claim 2, wherein a group of second slide bars (307) are symmetrically arranged around the bidirectional screw rod (305) in the square groove (304), a threaded sliding block (306) sliding on the same-side group of second slide bars (307) is arranged on the threads of the bidirectional screw rod (305) in the square groove (304), and the threaded sliding block (306) is connected with a same-side mounting bracket (309).
  4. 4. The multi-directional swing test stand of a hydraulic motor according to claim 1, wherein the deflection mechanism (4) further comprises a set of mounting holes (408) circumferentially and uniformly formed in the side surface of the flange plate (401) far away from the deflection motor (402), and through holes (311) aligned with one of the mounting holes (408) are formed in the side surface of the same-side mounting bracket (309).
  5. 5. A multidirectional swing test stand for a hydraulic motor according to claim 4, wherein a Z-shaped plate (405) with a right angle is inserted into a mounting bracket (309) without a deflection motor (402), an electric cylinder (406) connected with the end of a telescopic arm and the Z-shaped plate (405) is mounted on the side of the mounting bracket (309), and a plug pin (407) inserted into a through hole (311) and a mounting hole (408) aligned with the through hole is formed on the side of the Z-shaped plate (405).
  6. 6. A multidirectional swing test stand for a hydraulic motor according to claim 4, wherein the first upright posts (7) with upper ends connected with the top plate (6) are mounted at the corners of the lower side of the base (1), and the test assembly comprises a laser velocimeter (9) mounted on the side of a mounting bracket (309) provided with a deflection motor (402) and above the positioning holes (310).
  7. 7. The multi-directional swing test stand of a hydraulic motor according to claim 6, wherein a controller (13) with a display screen is arranged on the side face of one of the upright posts (7), and the controller (13) is electrically connected with the laser velocimeter (9).

Description

Multidirectional swing test bed for hydraulic motor Technical Field The application relates to the technical field of hydraulic motor inspection and detection, in particular to a multidirectional swing test bed for a hydraulic motor. Background The hydraulic motor is a device for converting hydraulic energy into mechanical energy and is widely applied to the fields of engineering machinery, vehicle transmission, industrial automation equipment, aerospace and the like. The performance of the hydraulic motor is directly related to the operational stability and reliability of the system. However, the existing hydraulic motor testing technology has the following limitations, and it is difficult to meet the performance verification requirement under the complex working condition. 1. There are significant limitations in modeling complex conditions. Taking the field of engineering machinery as an example, a hydraulic motor is often faced with unstable working conditions such as multidirectional swinging (such as water surface bump during ship navigation), transient impact, load fluctuation and the like in practical application, while the existing test scheme is mainly focused on performance detection under static conditions, and cannot simulate dynamic response characteristics caused by mechanical vibration or external impact in actual operation, such as dynamic change rules of key performance indexes such as rotation speed fluctuation, torque attenuation and the like. 2. There are significant limitations in modeling sudden load changes and oil temperature changes. Taking the field of shield machinery as an example, a hydraulic motor is often required to cope with transient pressure fluctuation (such as impact load when a shield machine cutterhead penetrates through a hard rock stratum) and dynamic oil temperature change (such as increase of oil temperature of a hydraulic system caused by continuous operation) in actual operation. However, the existing test scheme mainly applies a constant load on the output shaft, and only can reflect performance indexes (such as rated rotation speed and torque) of the motor under a steady-state working condition, but cannot simulate key application scenes such as pressure abrupt change working condition, oil temperature gradient change and the like. 3. There are significant limitations in integration and modular design. When the traditional testing device tests hydraulic motors with different specifications (such as size difference and power grade change), the clamping assembly is required to be replaced frequently, the position of the sensor is required to be adjusted, even the core component of the whole testing platform is detached, the operation difficulty and the maintenance cost are increased, and errors are easily introduced due to manual intervention. In addition, the mechanical structure of the existing test platform is mostly of a fixed design, so that the hydraulic motor is difficult to adapt to diversified installation modes and movement tracks in practical application. In summary, in the prior art, there is still room for improvement in terms of simulating the swing of the hydraulic motor and the modular integrated architecture, and therefore, a multi-directional swing test stand for the hydraulic motor is proposed by those skilled in the art. Disclosure of Invention In order to solve the problems, the application provides a multidirectional swing test stand for a hydraulic motor, which adopts the following technical scheme: the device comprises a base, wherein two groups of upright posts II which are in rectangular distribution are arranged on the upper side of the base, and top plates are jointly arranged at the upper ends of all the upright posts II. The device comprises a swinging mechanism and a clamping mechanism, wherein the clamping mechanism comprises guide groove plates which are arranged on all second upright posts in a sliding manner, sliding plates are arranged between the inner walls of the guide groove plates in a sliding manner, and a group of symmetrically arranged mounting brackets are arranged above the sliding plates. The swinging mechanism comprises a swinging motor arranged on the top plate, a turntable is arranged at the driving end of the swinging motor, a swinging rod I with the lower end hinged with the side face of the guide groove plate is hinged at the edge of the side face of the turntable, a cross rod is commonly arranged on a group of upright posts II, and a group of swinging rods II with the lower end hinged with the upper side of the sliding plate are hinged on the side face of the cross rod. The deflection mechanism comprises a plurality of flange plates which are rotatably arranged on the side surfaces of the corresponding mounting brackets, positioning holes which are the same as the inner diameter of the flange plates are formed in the side surfaces of the mounting brackets, and a deflection motor with a driving end connected wi