A multi-directional swing test bench for a hydraulic motor

Abstract

This application relates to a multi-directional swing test bench for hydraulic motors, belonging to the field of hydraulic motor inspection and testing technology. It includes a base with two sets of rectangularly distributed columns mounted on the upper side of the base. All columns share a common top plate. The test bench includes a swing mechanism, a clamping mechanism, and a deflection mechanism. The clamping and deflection mechanisms work together to change the motor's mounting position, avoiding the tediousness of manual adjustment and improving testing efficiency. Through the combined use of the swing and clamping mechanisms, the motor is subjected to multi-directional swinging, allowing observation of the motor's speed stability under swinging conditions. This effectively compensates for the shortcomings of static testing and significantly enhances the predictive ability of the test results for practical applications.

Description

Technical Field

[0001] This application relates to the field of hydraulic motor testing and inspection technology, and in particular to a multi-directional swing test bench for hydraulic motors. Background Technology

[0002] A hydraulic motor is a device that converts hydraulic energy into mechanical energy, and it is widely used in engineering machinery, vehicle transmissions, industrial automation equipment, and aerospace. The performance of a hydraulic motor directly affects the operational stability and reliability of the system. However, existing hydraulic motor testing technologies have the following limitations, making it difficult to meet the performance verification requirements under complex working conditions.

[0003] I. Significant limitations exist in simulating complex working conditions. Taking the field of engineering machinery as an example, hydraulic motors often face non-steady-state conditions such as multi-directional swaying (such as water surface turbulence when a ship is sailing), transient impacts, and load fluctuations in practical applications. However, existing testing schemes mainly focus on performance testing under static conditions and cannot simulate the dynamic response characteristics caused by mechanical vibration or external impacts during actual operation, such as the dynamic changes in key performance indicators such as speed fluctuations and torque attenuation.

[0004] Second, there are significant limitations in simulating sudden load changes and oil temperature variations. Taking tunnel boring machines as an example, hydraulic motors often need to cope with transient pressure fluctuations (such as the impact load when the cutterhead of a tunnel boring machine penetrates hard rock strata) and dynamic oil temperature changes (such as the rise in hydraulic system oil temperature due to continuous operation) during actual operation. However, existing testing schemes mainly apply a constant load to the output shaft, which can only reflect the motor's performance indicators (such as rated speed and torque) under steady-state conditions, but cannot simulate key application scenarios such as sudden pressure changes and oil temperature gradient changes.

[0005] Third, there are significant limitations in terms of integrated and modular design. Traditional testing devices require frequent replacement of clamping components, adjustment of sensor positions, and even disassembly of core components of the entire testing platform when testing hydraulic motors of different specifications (such as differences in size and power rating). This not only increases the difficulty of operation and maintenance costs but also makes it easy to introduce errors due to human intervention. In addition, the mechanical structure of existing testing platforms is mostly a fixed design, which makes it difficult to adapt to the diverse installation methods and motion trajectories of hydraulic motors in practical applications.

[0006] In summary, existing technologies still have room for improvement in simulating hydraulic motor swaying and modular integrated architecture. Therefore, those skilled in the art have proposed a multi-directional swaying test bench for hydraulic motors. Summary of the Invention

[0007] To address the aforementioned problems, this application provides a multi-directional swing test bench for hydraulic motors, employing the following technical solution:

[0008] It includes a base, on which two sets of rectangular columns are installed. All the columns are topped with a top plate.

[0009] It includes a swing mechanism and a clamping mechanism. The clamping mechanism includes a guide plate that is slidably mounted on all the two columns. A sliding plate is slidably mounted between the inner walls of the guide plate. A set of symmetrically arranged mounting brackets is mounted above the sliding plate.

[0010] The rocking mechanism includes a rocking motor mounted on the top plate. A turntable is mounted on the drive end of the rocking motor. A rocking rod is hinged to the side edge of the turntable, and its lower end is hinged to the side of the guide plate. A crossbar is mounted on a set of two columns. A set of rocking rods is hinged to the side of the crossbar, and its lower end is hinged to the upper side of the sliding plate.

[0011] It also includes a deflection mechanism, which includes multiple flanges rotatably mounted on the side of the corresponding mounting bracket. The side of the mounting bracket is provided with positioning holes with the same inner diameter as the flange. One of the mounting brackets is equipped with a deflection motor whose drive end is connected to the same side gear.

[0012] It also includes a testing component.

[0013] Preferably, the clamping mechanism also includes multiple square slots formed below the corresponding mounting brackets, with a bidirectional screw rotatingly mounted in two square slots, and a fixed motor with its drive end connected to one end of the bidirectional screw mounted on one side of the sliding plate.

[0014] Preferably, a set of slide bars two are symmetrically installed around the bidirectional screw in the square groove, and a threaded slider is provided on the thread of the bidirectional screw in the square groove, which slides on the set of slide bars two on the same side. The threaded slider is connected to the mounting bracket on the same side.

[0015] Preferably, the deflection mechanism further includes a set of mounting holes evenly spaced circumferentially on the side of the flange away from the deflection motor, and a through hole aligned with one of the mounting holes is provided on the side of the mounting bracket on the same side.

[0016] Preferably, a Z-shaped plate with a right angle is inserted into the mounting bracket without a deflection motor. An electric cylinder that connects to the end of the telescopic arm and the Z-shaped plate is installed on the side of the mounting bracket. The side of the Z-shaped plate is provided with an insertion through hole and a pin in the mounting hole aligned with it.

[0017] Preferably, a support mechanism is installed on the upper side of the sliding plate between the two mounting brackets. The support mechanism includes a mounting seat with two vertically distributed chambers inside, and a support seat with an arc-shaped upper side is provided above the mounting seat.

[0018] Preferably, a piston 2 connected to a support seat is slidably disposed in the upper cavity, and a number of evenly distributed springs are connected between the piston 2 and the bottom surface of the upper cavity.

[0019] Preferably, a connecting pipe communicating with the upper cavity is installed on the inner wall of the lower cavity, and a piston 1 adapted to it is slidably arranged in the lower cavity. A pressure-bearing component extending to the outside of the mounting seat is installed on the side of the piston 1. Both the lower cavity and the upper cavity are filled with hydraulic oil in the area below the piston 2.

[0020] Preferably, each of the lower corners of the base is equipped with a column whose upper end is connected to the top plate, and the test assembly includes a laser velocimeter installed on the side of the mounting bracket on which the deflection motor is installed and above the positioning hole.

[0021] Preferably, a controller with a display screen is installed on the side of one of the columns, and the controller is electrically connected to the laser velocimeter.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] I. This application achieves automated operation of motor fixing and installation position adjustment through the coordinated design of the clamping mechanism and the deflection mechanism. Specifically, the clamping mechanism adopts a modular bidirectional screw drive structure, which can quickly complete the clamping and fixing of the motor; and the hydraulic support system ensures the clamping stability of the motor under multi-directional vibration.

[0024] Second, this application realizes the simulation of multi-directional oscillation of a motor. The oscillation mechanism enables the motor to oscillate in multiple directions while in a clamped state through the linkage between the turntable and two swing rods, breaking through the limitations of traditional static testing of motors.

[0025] Third, this application utilizes a deflection mechanism that, through the transmission between a ring plate and gears, enables the motor to achieve self-rotation adjustment without disassembly while in a clamped state. This not only improves the efficiency of motor disassembly and assembly and avoids clamping deviations caused by manual disassembly and assembly, but also enhances the consistency of test results. Attached Figure Description

[0026] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a schematic diagram of the structure of this application.

[0028] Figure 2 This is a schematic diagram of the swing mechanism structure of this application.

[0029] Figure 3 This is a side view of the swing mechanism of this application.

[0030] Figure 4 This is a schematic diagram of the clamping mechanism structure of this application.

[0031] Figure 5 This is a cross-sectional view of the main body of the clamping mechanism in this application.

[0032] Figure 6 This is a schematic diagram of the deflection mechanism structure of this application.

[0033] Figure 7 This is a schematic diagram of the supporting structure of this application.

[0034] Figure 8 yes Figure 1 Enlarged view of section A in the middle.

[0035] In the diagram: 1. Base; 2. Swinging mechanism; 201. Mounting plate; 202. Swing motor; 203. Turntable; 204. Swing rod one; 205. Crossbar; 206. Swing rod two; 3. Clamping mechanism; 301. Guide groove plate; 302. Slide rod one; 303. Sliding plate; 304. Square groove; 305. Bidirectional screw; 306. Threaded slider; 307. Slide rod two; 308. Fixed motor; 309. Mounting bracket; 310. Positioning hole; 311. Through hole; 4. Deflection mechanism; 401. Flange; 402. Deflection motor; 403. Gear ring; 404. Gear; 405. Z-shaped plate; 406. Electric cylinder; 407. Pin; 408. Mounting hole; 5. Support mechanism; 501. Mounting base; 502. Connecting pipe; 503. Piston one; 504. Pressure-bearing component; 505. Piston two; 506. Support base; 507. Connecting rod; 508. Spring; 6. Top plate; 7. Column one; 8. Column two; 9. Laser velocimeter; 12. Groove; 13. Controller. Detailed Implementation

[0036] The following combination Figure 1 - Figure 8 The embodiments of this application will be described in detail.

[0037] This application discloses a multi-directional swing test bench for hydraulic motors. Through the cooperation of a swing mechanism and a clamping mechanism, during the motor testing process, the swing mechanism is used to swing the motor fixed on the clamping mechanism up and down and left and right, simulating the real working environment of the motor, accurately measuring the speed stability of the motor under swing conditions, and improving the comprehensiveness of the test data.

[0038] Example 1:

[0039] like Figure 1 and Figure 4 As shown, it includes a base 1 and a clamping mechanism 3. The clamping mechanism 3 includes a sliding plate 303 disposed on the base 1. Two square slots 304 are symmetrically opened on the upper side of the sliding plate 303. A bidirectional screw 305 is rotatably installed in the two square slots 304. A fixed motor 308 is installed on one side of the sliding plate 303, and the driving end is connected to one end of the bidirectional screw 305. The fixed motor 308 drives the bidirectional screw 305 to rotate forward or backward.

[0040] like Figure 4 and Figure 5 As shown, a set of slide bars 307 are symmetrically installed around the bidirectional screw 305 in the square groove 304. A threaded slider 306 is provided on the thread of the bidirectional screw 305 in the square groove 304 and slides on the slide bars 307 on the same side. A mounting bracket 309 is installed on the threaded slider 306. When the bidirectional screw 305 rotates, it drives the two threaded sliders 306 to move closer to each other, which in turn drives the two mounting brackets 309 to move closer to each other. When it reverses, it moves away from each other. The slide bars 307 limit the threaded slider 306 on the same side to prevent it from rotating with the bidirectional screw 305.

[0041] like Figure 6 As shown, it also includes a deflection mechanism 4, which includes multiple flanges 401 rotatably mounted on the side of the corresponding mounting bracket 309. The mounting bracket 309 has positioning holes 310 with the same inner diameter as the flanges 401 on its side. When the motor is placed between two flanges 401, the mounting brackets 309 move closer together, causing the two flanges 401 to move closer together until the two ends of the motor are clamped. At the same time, the motor output shaft extends from the positioning hole 310 on the same side. The clamping and fixing can realize the quick fixing and disassembly of the motor, improving the testing efficiency.

[0042] like Figure 6 As shown, a deflection motor 402 is mounted on the side of one of the mounting brackets 309. A gear 404 is mounted on the drive end of the deflection motor 402. A gear ring 403 that meshes with the gear 404 is mounted on the side of the flange 401 on the same side as the deflection motor 402. The running deflection motor 402 drives the gear 404 to rotate, which in turn drives the corresponding flange 401 to rotate through the gear ring 403, thereby driving the clamping motor to rotate.

[0043] like Figure 6 As shown, the deflection mechanism 4 also includes a set of mounting holes 408 circumferentially evenly opened on the side of the flange 401 away from the deflection motor 402. The side of the mounting bracket 309 on the same side is provided with a through hole 311 aligned with one of the mounting holes 408. A pin 407 is provided in the through hole 311 and the mounting hole 408 aligned with it to fix the flange 401 and the mounting bracket 309 in a snap-fit ​​manner. When the pin 407 is removed, the fixation can be released. Even if the flange 401 is rotated, after the rotation, one of the mounting holes 408 is aligned with the through hole 311, and then the pin 407 is inserted, it can still be fixed.

[0044] like Figure 6 As shown, a Z-shaped plate 405 with a right angle and connected to the pin 407 is inserted into the mounting bracket 309 on the same side as the pin 407. An electric cylinder 406 connected to the telescopic arm end and the Z-shaped plate 405 is installed on the side of the mounting bracket 309. The telescopic electric cylinder 406 drives the pin 407 to move through the Z-shaped plate 405.

[0045] like Figure 1 As shown, the test assembly includes a laser velocimeter 9 mounted on the side of the mounting bracket 309 on which the deflection motor 402 is mounted and above the positioning hole 310. The motor is passed through the positioning hole 310 on the same side as the laser velocimeter 9, and then a reflective sticker aligned with the laser velocimeter 9 is attached to the motor's rotating shaft. After the motor runs, the laser velocimeter 9 calculates the rotational speed based on the frequency of the reflected signal from the reflective sticker.

[0046] like Figure 1 As shown, a controller 13 with a display screen is installed on the side of one of the columns 7. The controller 13 is electrically connected to the laser velocimeter 9. The laser velocimeter 9 sends the test results to the controller 13, which then displays them on its screen. The tester can then observe the test results of the motor.

[0047] In summary, the motor is placed between the two flanges 401, with the motor's rotation shaft facing the laser tachometer 9. Then, the motor 308 is fixed to drive the bidirectional screw 305 to rotate, causing the two mounting brackets 309 to move closer to each other until the two flanges 401 clamp the motor. At the same time, the motor's rotation shaft extends from the positioning hole 310 on the same side as the laser tachometer 9. A reflective sticker aligned with the laser tachometer 9 is attached to the motor's rotation shaft. Oil is supplied to the motor, and its output shaft rotates. The laser tachometer 9 calculates the rotational speed based on the frequency of the reflected signal from the reflective sticker, and then sends the test results to the controller 13, which displays the results on its screen. The testing personnel can then observe the test results of the motor.

[0048] Simultaneously, the motor is turned off, the electric cylinder 406 extends and drives the pin 407 to move out of the mounting hole 408, releasing the drive between the flange 401 and the mounting bracket 309. The deflection motor 402 drives the flange 401 connected to its gear to rotate, driving the motor to rotate. After reaching the predetermined position, the flange 401 is finely adjusted so that the through hole 311 is aligned with the nearest mounting hole 408, allowing the pin 407 to be inserted, thus enabling testing of multiple mounting positions of the motor.

[0049] A guide plate 301 is fitted on the outer side of the sliding plate 303. Two observation sliding plates 303 are symmetrically installed on the inner wall of the guide plate 301 and are slidably connected to the sliding rods 302. The sliding plate 303 can slide back and forth on the sliding rods 302.

[0050] like Figure 1 As shown, two sets of rectangular columns 8 are installed on the upper side of the base 1 and penetrate the guide plate 301. All columns 8 are connected to the top plate 6 at their upper ends. Columns 7 are installed at the lower corners of the base 1 and are connected to the top plate 6 at their upper ends. The top plate 6 has a groove 12 on its side. Columns 7 and 8 are the main support of the device. Columns 8 guide the guide plate 301 so that it can only slide up and down.

[0051] like Figure 2 and Figure 3 As shown, a rocking mechanism 2 is also provided. The rocking mechanism 2 includes a mounting plate 201 installed on the edge of the groove 12. A rocking motor 202 is installed on the side of the mounting plate 201. A turntable 203 is installed on the drive end of the rocking motor 202. A swing rod 204 with its lower end hinged to the side edge of the turntable 203 is connected to the side of the guide plate 301. The running rocking motor 202 drives the turntable 203 to rotate. The rotating turntable 203 pulls the guide plate 301 to slide up and down on the column 8 through the swing rod 204.

[0052] like Figure 2 and Figure 3 As shown, a set of two columns 8 are equipped with a crossbar 205. A set of swing rods 206 with their lower ends hinged to the side of the crossbar 205 are connected to the upper side of the sliding plate 303. When the guide plate 301 rises, since the crossbar 205 is stationary, the swing rods 206 drive the sliding plate 303 to move forward on the slide bar 302. When the guide plate 301 falls, the swing rods 206 drive the sliding plate 303 to move backward, ensuring that the sliding plate 303 moves back and forth during the up and down sliding of the guide plate 301.

[0053] In summary, the running swing motor 202 drives the turntable 203 to rotate. The rotating turntable 203 pulls the guide plate 301 up and down on the column 8 via the swing rod 204. During the upward movement of the guide plate 301, since the crossbar 205 is stationary, the swing rod 206 drives the sliding plate 303 to move forward on the slide rod 302. When the guide plate 301 descends, the swing rod 206 drives the sliding plate 303 to move backward, ensuring that the guide plate 301 slides up and down while driving the sliding plate 303 to slide back and forth. This allows the motor to be in an up-and-down and back-and-forth swinging posture during the test, enabling accurate measurement of the motor's output speed fluctuation under swinging conditions and improving the comprehensiveness of the test data.

[0054] Example 2:

[0055] Based on Example 1, such as Figure 1 and Figure 7 As shown, a support mechanism 5 is installed on the upper side of the sliding plate 303 between two mounting brackets 309. The support mechanism 5 includes a mounting seat 501 with two upper and lower distributed chambers inside. A support seat 506 with an arc shape on the upper side is provided above the mounting seat 501. The support seat 506 is used to support the clamped motor and improve the stability of the motor.

[0056] like Figure 7As shown, a second piston 505 is slidably disposed within the upper cavity. Symmetrically mounted on the upper side of the second piston 505 are connecting rods 507 extending to the outside of the mounting base 501 and connecting to the support base 506. Several evenly distributed springs 508 connect the second piston 505 to the bottom surface of the upper cavity. When the second piston 505 moves upward, it stretches the springs 508, simultaneously causing the support base 506 to rise and contact the motor. Conversely, when the springs 508 contract, they cause the second piston 505 and the support base 506 to descend, releasing the support.

[0057] like Figure 7 and Figure 8 As shown, a connecting pipe 502 communicating with the upper cavity is installed on the inner wall of the lower cavity. A piston 503 adapted to the piston 503 is slidably installed in the lower cavity. A pressure-receiving member 504 extending to the outside of the mounting base 501 and close to the Z-shaped plate 405 is installed on the side of the piston 503. The lower cavity and the upper cavity are both filled with hydraulic oil in the area below the piston 505. When the Z-shaped plate 405 squeezes the pressure-receiving member 504, it will drive the piston 503 to move toward the connecting pipe 502, and press the hydraulic oil in the lower cavity into the upper cavity through the connecting pipe 502, pushing the piston 505 to rise. When the piston 505 falls, it will also press the hydraulic oil in the upper cavity back into the lower cavity.

[0058] In summary, when the electric cylinder 406 shortens and moves the Z-shaped plate 405 to insert the pin 407 into the through hole 311 and the aligned fixed motor 308 to fix the flange 401, the moving Z-shaped plate 405 will also squeeze the pressure-bearing component 504, causing the piston 1 503 to move towards the connecting pipe 502, pressing the hydraulic oil in the lower chamber into the upper chamber through the connecting pipe 502, pushing the piston 2 505 upward, stretching the spring 508, and simultaneously driving the support seat 506 to support the motor. When the electric cylinder 406 extends and moves the pin 407 out of the mounting hole 408 to release the fixation of the flange 401, it will also release the pressure on the pressure-bearing component 504. The spring 508 contracts and pulls the piston 2 505 and the support seat 506 downward, releasing the support for the motor and avoiding interference with the support seat 506 when the motor rotates later. At the same time, the descending piston 2 505 will also press the hydraulic oil in the upper chamber into the lower chamber.

[0059] This application also discloses a method for using a multi-directional swing test bench with a hydraulic motor, the steps of which are as follows:

[0060] S1. Motor fixing: Fix the motor on the clamping mechanism 3. Specifically, place the motor between the two flanges 401 and make the rotation shaft face the laser velocimeter 9. Then fix the motor 308 to drive the bidirectional screw 305 to rotate, so that the two mounting brackets 309 move closer to each other until they cooperate with the two flanges 401 to clamp the motor. At the same time, the rotation shaft of the motor extends out from the positioning hole 310 on the same side as the laser velocimeter 9.

[0061] S2. Motor test: The speed of the running motor is tested using a laser tachometer 9. Specifically, a reflective sticker aligned with the laser tachometer 9 is attached to the rotating shaft of the motor. Oil is supplied to the motor, and its output shaft rotates. The laser tachometer 9 calculates the speed by the frequency of the reflected signal from the reflective sticker, and then sends the test results to the controller 13, which displays the results on its screen. The tester can then observe the test results of the motor.

[0062] S3. Swing Test: The motor is tested in a swinging state using the swing mechanism 2. Specifically, the running swing motor 202 drives the turntable 203 to rotate. The rotating turntable 203 pulls the guide plate 301 on the column 8 through the swing rod 1 204 to move it up and down. During the upward movement of the guide plate 301, since the crossbar 205 is stationary, the swing rod 2 206 drives the sliding plate 303 to move forward on the slide rod 1 302. When the guide plate 301 descends, the swing rod 2 206 drives the sliding plate 303 to move backward, ensuring that the sliding plate 303 moves back and forth during the up and down movement of the guide plate 301. This allows the motor to be in a swinging posture during the test, simulating the real working environment.

[0063] S4. Multi-position test: The deflection mechanism 4 is used to change the position of the motor. Specifically, the motor is turned off, the electric cylinder 406 extends and drives the pin 407 to move out of the mounting hole 408, releasing the drive between the flange 401 and the mounting bracket 309. The deflection motor 402 drives the flange 401 connected to its gear to rotate, driving the motor to rotate and changing the position of the motor. After reaching the predetermined position, the flange 401 is adjusted so that the through hole 311 is aligned with other mounting holes 408, allowing the pin 407 to be inserted. The motor is then lubricated and the test continues, realizing the testing of the motor in multiple mounting positions.

[0064] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered in all respects as exemplary and not restrictive.

[0065] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-directional swing test bench for a hydraulic motor, comprising a base (1), two sets of rectangularly distributed columns (8) mounted on the upper side of the base (1), and a top plate (6) mounted on the upper end of all columns (8), characterized in that: It includes a swing mechanism (2) and a clamping mechanism (3). The clamping mechanism (3) includes a guide plate (301) that is slidably disposed on all the columns (8). A sliding plate (303) is slidably disposed between the inner walls of the guide plate (301). A set of symmetrically arranged mounting brackets (309) is disposed above the sliding plate (303). The swing mechanism (2) includes a swing motor (202) mounted on the top plate (6). A turntable (203) is mounted on the drive end of the swing motor (202). A swing rod (204) with its lower end hinged to the side edge of the turntable (203) is connected to the side of the guide plate (301). A crossbar (205) is mounted on a set of two columns (8). A set of swing rods (206) with its lower end hinged to the side of the crossbar (205) is connected to the side of the crossbar (205). It also includes a deflection mechanism (4), which includes multiple flanges (401) rotatably mounted on the side of the corresponding mounting bracket (309). The mounting bracket (309) has a positioning hole (310) with the same inner diameter as the flange (401) on its side. One of the mounting brackets (309) has a deflection motor (402) mounted on its side, with the drive end connected to the gear of the same side gear ring (403). It also includes a testing component; A support mechanism (5) is installed on the upper side of the sliding plate (303) between two mounting brackets (309). The support mechanism (5) includes a mounting seat (501) with two upper and lower distributed chambers inside. A support seat (506) with an arc shape on the upper side is provided above the mounting seat (501). A piston 2 (505) connected to the support seat (506) is slidably arranged in the upper cavity, and a number of evenly distributed springs (508) are connected between the piston 2 (505) and the bottom surface of the upper cavity. The lower cavity is equipped with a connecting pipe (502) that communicates with the upper cavity. A piston (503) that is compatible with it is slidably arranged in the lower cavity. A pressure-bearing component (504) extending to the outside of the mounting seat (501) is installed on the side of the piston (503). The lower cavity and the upper cavity are both filled with hydraulic oil in the area below the piston (505). The pressure-bearing component (504) is squeezed, causing piston one (503) to move toward the connecting pipe (502), which in turn pushes the hydraulic oil in the lower chamber into the upper chamber through the connecting pipe (502), pushing piston two (505) to rise. While stretching the spring (508), the support seat (506) is driven to support the motor, releasing the pressure on the pressure-bearing component (504). The spring (508) contracts and pulls piston two (505) and support seat (506) to fall, releasing the support on the motor and preventing interference between the motor and support seat (506) when it rotates. At the same time, the falling piston two (505) will also push the hydraulic oil in the upper chamber into the lower chamber.

2. The hydraulic motor multi-directional swing test bench according to claim 1, characterized in that: The clamping mechanism (3) also includes multiple square slots (304) opened below the corresponding mounting brackets (309). Two double screws (305) are rotatably installed in two square slots (304). A fixed motor (308) with the drive end connected to one end of the double screw (305) is installed on one side of the sliding plate (303).

3. The hydraulic motor multi-directional swing test bench according to claim 2, characterized in that: A set of slide rods (307) is symmetrically installed around the double-acting screw (305) in the square groove (304). A threaded slider (306) is provided on the thread of the double-acting screw (305) in the square groove (304) and slides on the same side of the set of slide rods (307). The threaded slider (306) is connected to the mounting bracket (309) on the same side.

4. The hydraulic motor multi-directional swing test bench according to claim 1, characterized in that: The deflection mechanism (4) also includes a set of mounting holes (408) evenly distributed around the flange (401) away from the deflection motor (402), and a through hole (311) aligned with one of the mounting holes (408) is provided on the side of the mounting bracket (309) on the same side.

5. A multi-directional swing test bench for a hydraulic motor according to claim 4, characterized in that: 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 to the end of the telescopic arm and the Z-shaped plate (405) is installed on the side of the mounting bracket (309). The side of the Z-shaped plate (405) is provided with an insertion through hole (311) and a pin (407) in a mounting hole (408) aligned with it.

6. The hydraulic motor multi-directional swing test bench according to claim 4, characterized in that: At the lower corner of the base (1), there is a column (7) connected to the top plate (6) at the top end. The test assembly includes a laser velocimeter (9) installed on the side of the mounting bracket (309) on which the deflection motor (402) is installed and above the positioning hole (310).

7. A multi-directional swing test bench for a hydraulic motor according to claim 6, characterized in that: One of the columns (7) has a controller (13) with a display screen installed on its side. The controller (13) is electrically connected to the laser velocimeter (9).

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