Performance testing device for hydraulic motor speed reducer assembly

Abstract

The invention discloses a performance testing device for a hydraulic motor speed reducer assembly, which belongs to the technical field of speed reducer assembly detection devices, and comprises a detection device for detecting the strength of a speed reducer assembly, a lifting assembly, a driving assembly and a driving assembly, a lifting table at the top end of the lifting assembly is used for fixing a speed reducer assembly, and a sliding block and a sliding piece are installed at the two ends of the bottom of the lifting assembly respectively. By means of the device, the speed reducer assembly can be installed outside the detection device, the installation process is not limited by the space of the detection device, and the mode is particularly suitable for the situation that the speed reducer assembly is assembled on the detection device in a hoisting mode due to the fact that the size is large. After the lifting assembly drives the speed reducer assembly to move to the position below the base, the speed reducer assembly can be unfolded so as to complete butt joint of the lifting table and the base, and therefore detection of the speed reducer assembly is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reducer assembly detection devices, in particular to a performance testing device for a hydraulic motor reducer assembly. BACKGROUND

[0002] The housing, flange, bearing seat and other components of the reducer assembly will bear internal stress under the action of working pressure. By applying stable pressure for a certain period of time, it can be checked whether these structural parts have cracks, deformation and damage, etc. so as to avoid the rupture of the housing under high pressure.

[0003] The current detection device, such as a hardness tester, needs to be fixed by bolts when installing the reducer assembly. For some larger size reducer assemblies, they need to be hoisted to one side of the detection device and fixed. Since the space range for detection operation on the detection device is limited, it is difficult to adjust the hoisted reducer assembly to the detection device and fix it, which is not convenient to operate.

[0004] Therefore, it is necessary to provide a performance testing device for a hydraulic motor reducer assembly to solve the above technical problems. SUMMARY

[0005] The present application aims to provide a performance testing device for a hydraulic motor reducer assembly to solve the problem that in the existing device, for some larger size reducer assemblies, they need to be hoisted to one side of the detection device and fixed. Since the space range for detection operation on the detection device is limited, it is difficult to adjust the hoisted reducer assembly to the detection device and fix it.

[0006] Based on the above idea, the present application provides the following technical scheme: a performance testing device for a hydraulic motor reducer assembly, comprising a detection device for strength detection of the reducer assembly, a base is arranged on one side of the detection device, and further comprising: A lifting assembly, the lifting platform at the top end of the lifting assembly is used for fixing the reducer assembly, and the bottom ends of the lifting assembly are respectively provided with a sliding block and a sliding member, both of which slide on a sliding rail; A lead screw is arranged at the sliding rail and can drive the sliding member to slide along the sliding rail. When the sliding block slides to the end of the sliding rail and the lead screw drives the sliding member to approach the sliding block, the lifting assembly can be unfolded and drive the lifting platform to move upward, so that the screw rod at the top of the lifting platform passes through the pre-set through hole of the base to lock the lifting platform and the base.

[0007] As a further scheme of the present application, the sliding member comprises an upper pressing member and a lower pressing member, and the upper pressing member and the lower pressing member are matched through a clamping mechanism, the outer side of the lead screw is engaged with a sleeve, the sleeve is elastically connected with the lower pressing member, and a sliding sleeve is arranged between the sleeve and the lower pressing member, and when the sliding sleeve moves relative to the lower pressing member, the clamping mechanism can release the upper pressing member on the top of the lower pressing member.

[0008] As a further scheme of the present application, the clamping mechanism comprises a clamping block arranged on the top surface of the lower pressing member and elastically matched with the lower pressing member, the bottom surface of the upper pressing member is provided with a clamping groove matched with the clamping block, one side of the clamping block away from the upper pressing member is fixedly provided with a sliding rod, the sliding rod is provided with a protrusion, the lower pressing member is hingedly connected with a swing rod, the protrusion is slidably matched with a strip-shaped groove arranged on the swing rod, and when the sliding sleeve slides relative to the lower pressing member and presses the swing rod, the swing rod is deflected, and the strip-shaped groove and the protrusion are matched to pull the sliding rod and the clamping block to move away from the upper pressing member.

[0009] As a further scheme of the present application, an arc-shaped guide groove is arranged on the detection device, and a guide block matched with the guide groove is fixedly arranged on the side wall of the base, and when the sliding block is pushed to the end of the sliding rail, the axis of the rod matched with the sliding block coincides with the axis of the guide groove.

[0010] As a further scheme of the present application, a limiting block is elastically connected to one side of the lower pressing member, and the limiting block is configured to realize one-way sliding of the sliding sleeve relative to the lower pressing member.

[0011] As a further scheme of the present application, a plurality of groups of annular grooves are uniformly arranged on the outer circumferential surface of the sliding sleeve, and one end of the limiting block matched with the outer circumferential surface of the sliding sleeve is provided with an inclined surface, so that the sliding sleeve can be inserted into the lower pressing member in one direction only.

[0012] As a further scheme of the present application, the rod on the lifting assembly passes through and is rotationally matched with the sliding block and the upper pressing member, and the lead screw is arranged along the axial direction and passes through the sliding block and the lower pressing member.

[0013] As a further scheme of the present application, a disc is arranged on the top of the lifting table, and the disc is rotationally matched with the lifting table.

[0014] As a further scheme of the present application, the guide block and the guide groove are both of T-shaped structure.

[0015] As a further scheme of the present application, the clamping block is arranged perpendicularly to the top surface of the lower pressing member.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the structure allows the reducer assembly to be installed outside the testing device, so that the installation process is not limited by the space of the testing device. This method is particularly suitable for situations where the reducer assembly is hoisted onto the testing device due to its large size. After the lifting component moves the reducer assembly to the base, it can unfold to complete the docking of the lifting platform with the base, which is beneficial for testing the reducer assembly. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the base and the detection device of the present invention; Figure 3 This is a schematic diagram of the guide block structure of the present invention; Figure 4 This is a schematic diagram of the lifting component structure of the present invention; Figure 5 This is a schematic diagram of the lifting platform and screw structure of the present invention; Figure 6 This is a cross-sectional view of the slider and sliding member of the present invention; Figure 7 This is the present invention. Figure 6 A magnified structural diagram at point A; Figure 8 This is a schematic diagram of the cooperation between the protrusion and the limiting block of the present invention; Figure 9 This is a schematic diagram of the cooperation between the limiting block and the sliding sleeve of the present invention; Figure 10 This is a schematic diagram of the connection structure between the upper and lower pressure members of the present invention.

[0019] In the diagram: 1. Detection device; 101. Pressure head; 102. Base; 1021. Guide block; 103. Guide groove; 2. Lifting platform; 201. Screw; 3. Lifting assembly; 301. Slider; 302. Rod; 4. Slide rail; 5. Sliding component; 501. Upper pressure component; 5011. Connecting block; 5012. Slot; 502. Lower pressure component; 5021. Locking block; 5022. Slide rod; 6. Disc; 7. Limiting spring; 8. Screw sleeve; 9. Square block; 10. Guide bar; 1001. Recess; 11. Lead screw; 12. Slide sleeve; 1201. Annular groove; 13. Swing rod; 1301. Strip groove; 14. Pin; 15. Protrusion; 16. Limiting block; 1601. Rotating shaft; 1602. Inclined surface. Detailed Implementation

[0020] likeFigures 1-10 As shown, a performance testing device for a hydraulic motor reducer assembly includes a testing device 1 for testing the reducer assembly and a lifting platform 2 for supporting the reducer assembly. Figure 1 As shown, a base 102 is provided on one side of the testing device 1 to cooperate with the lifting platform 2. The screws 201 fixed at the four corners of the top of the lifting platform 2 can pass through the pre-set through holes on the base 102. In actual use, the lifting assembly 3 brings the lifting platform 2 to the bottom of the base 102 and drives the lifting platform 2 to move upward. After the screws 201 pass through the through holes, the lifting platform 2 and the base 102 can be locked by the cooperation of the nut and the screws 201, thereby maintaining the stability of the lifting platform 2, so that the testing device 1 can test the reducer assembly. It should be noted that the testing device 1 can be a hardness tester. The indenter 101 in the hardness tester applies pressure to the housing and the test points on the inner wall of the reducer assembly, thereby testing the strength of the reducer assembly. The hardness tester can be selected from the prior art. The specific structure of the hardness tester will not be described in detail here. The installation method of the reducer assembly will be described in detail below with reference to specific embodiments.

[0021] like Figures 1-6 As shown, the lifting assembly 3 can be selected from existing technologies, such as a scissor lift device. The folding or unfolding of the scissor lift device enables vertical movement of the reducer assembly. Slider 301 and sliding member 5 are respectively fitted onto the rods 302 on both sides of the bottom of the lifting assembly 3, and both the slider 301 and the sliding member 5 are slidably disposed within the slide rail 4. A lead screw 11 is provided at the slide rail 4. In this embodiment, the lead screw 11 can selectively engage with the sliding member 5 via a thread. When the lifting assembly 3 is pushed to the end of the slide rail 4, the continued rotation of the lead screw 11 pushes the sliding member 5 to slide within the slide rail 4 and gradually approach the slider 301. The lifting assembly 3 unfolds and moves the lifting platform 2 upward, allowing the screws 201 at the four corners of the top of the lifting platform 2 to pass through the through holes on the base 102. Then, the lifting platform 2 is locked to the base 102 with nuts. In summary, this structure allows the reducer assembly to be installed outside the testing device 1, so that the installation process is not limited by the space of the testing device 1. This method is particularly suitable for situations where the reducer assembly is hoisted to the testing device 1 due to its large size. After the lifting assembly 3 moves the reducer assembly to below the base 102, it can unfold to complete the docking of the lifting platform 2 and the base 102, which is beneficial for testing the reducer assembly.

[0022] In the above embodiment, the reducer assembly is fixed in a plane. Therefore, when it is necessary to detect the detection points on the inner wall of the reducer assembly, the reducer assembly needs to be rotated so that the pressure head 101 on the detection device 1 is aligned with the corresponding detection point on the inner wall of the reducer assembly. Based on this, the above embodiment is extended, specifically, in conjunction with... Figures 2-10 As shown, the sliding member 5 includes an upper pressing member 501 and a lower pressing member 502, and the upper pressing member 501 and the lower pressing member 502 are engaged by a locking mechanism. The locking mechanism is configured to lock the upper pressing member 501 and the lower pressing member 502 and release the upper pressing member 501 from the lower pressing member 502. It should be noted that the sides of the upper pressing member 501 and the lower pressing member 502 that are in contact with each other are inclined. When the upper pressing member 501 is released on the top of the lower pressing member 502, the lower pressing member 502 moves relative to the upper pressing member 501, which can drive the lifting assembly 3 to deflect as a whole, thereby adjusting the angle of the reducer assembly so that the pressure head 101 on the detection device 1 can be aligned with the corresponding detection point on the inner wall of the reducer assembly.

[0023] In this embodiment, a threaded sleeve 8 is provided on the side of the slider 5 away from the slider 301, and the lead screw 11 passes through the threaded sleeve 8 and is threadedly connected to it. One end of the lead screw 11 that protrudes from the slide rail 4 is connected to the output shaft of an external motor, so that the motor can drive the lead screw 11 to rotate. A limit spring 7 is provided between the square abutment portion protruding outward 15 at the end of the threaded sleeve 8 and the lower pressure member 502 to achieve elastic cooperation between the threaded sleeve 8 and the lower pressure member 502. A sliding sleeve 12 is provided between the square abutment portion and the lower pressure member 502. (Refer to...) Figures 6-10As shown, one end of the sliding sleeve 12 is fixedly connected to the aforementioned square abutment portion, and the other end of the sliding sleeve 12 extends into the lower pressure member 502. The sliding sleeve 12 is configured such that when it moves relative to the lower pressure member 502, the locking mechanism can release the upper pressure member 501 onto the top of the lower pressure member 502, thereby allowing adjustment of the overall angle of the lifting assembly 3. In summary, in this embodiment, the reducer assembly is hoisted above the lifting assembly 3, so that the reducer assembly is fixed to the top of the lifting platform 2. When the lead screw 11 rotates, it can drive the screw sleeve 8 to move along the length direction of the slide rail 4 and push the folded lifting assembly 3 to move as a whole. When block 301 is blocked at the end of slide rail 4, as lead screw 11 rotates, lead screw 11 can drive screw sleeve 8 to move and push sliding member 5 along slide rail 4 through limit spring 7, so that lifting assembly 3 can unfold and lock with base 102. When it is necessary to adjust the angle of reducer assembly, drive lead screw 11 to rotate. During this process, screw sleeve 8 can compress limit spring 7 and move closer to lower pressure member 502. When sliding sleeve 12 moves relative to lower pressure member 502, the locking mechanism can release upper pressure member 501 on top of lower pressure member 502, which is conducive to driving lifting assembly 3 and reducer assembly at its top to deflect.

[0024] The locking mechanism includes a locking block 5021 disposed on the top surface of the pressing member 502 and elastically engaged with the pressing member 502, in conjunction with... Figures 6-7 As shown, the locking block 5021 is perpendicular to the top surface of the lower pressing member 502. The bottom surface of the upper pressing member 501 has a locking groove 5012 that cooperates with the locking block 5021. A sliding rod 5022 is fixedly provided on the side of the locking block 5021 away from the upper pressing member 501. A protrusion 15 is provided on the sliding rod 5022. A swing rod 13 is hinged to the lower pressing member 502. The protrusion 15 is slidably engaged with the strip groove 1301 provided on the swing rod 13. With this structure, when the sliding sleeve 12 slides relative to the lower pressing member 502 and presses against the swing rod 13, during the deflection of the swing rod 13, the cooperation between the strip groove 1301 and the protrusion 15 can pull the sliding rod 5022 and the locking block 5021 to move away from the upper pressing member 501. When the locking block 5021 disengages from the locking groove 5012, the upper pressing member 501 is released on the top of the lower pressing member 502.

[0025] In this embodiment, the base 102 needs to be able to deflect relative to the detection device 1. Specifically, the detection device 1 is provided with an arc-shaped guide groove 103, and a guide block 1021 that matches the guide groove 103 is fixedly provided on the side wall of the base 102. The guide block 1021 slides in the guide groove 103, and the cross-sections of the guide block 1021 and the guide groove 103 are both T-shaped structures. When the slider 301 is pushed to the end of the slide rail 4, the axis of the rod 302 that cooperates with the slider 301 coincides with the axis of the guide groove 103. In summary, when it is necessary to adjust the detection angle of the reducer assembly, the lead screw 11 can be used to drive the sliding sleeve 12 to slide relative to the lower pressure member 502. During the process of the sliding sleeve 12 pressing the swing rod 13, the locking block 5021 can separate from the locking groove 5012 to release the upper pressure member 501. Since the surfaces of the upper pressure member 501 and the lower pressure member 502 that are in contact with each other are both inclined, when the screw sleeve 8 pushes the lower pressure member 502 to move relative to the upper pressure member 501 through the limiting spring 7, the upper pressure member 501 can move upward or downward in the vertical direction along the top surface of the lower pressure member 502, so that the lifting assembly 3 as a whole can rotate around the rod 302 at the slider 301. During this process, the reducer assembly and the base 102 will also deflect accordingly, thereby completing the angle adjustment of the reducer assembly, so that the pressure head 101 in the detection device 1 can be aligned with the corresponding detection point on the inner wall of the reducer assembly. Compared with the traditional installation method, in this embodiment, the installation and angle adjustment of the reducer assembly can be realized through a single drive method, thereby avoiding the problems of structural complexity and increased cost caused by assembling multiple power mechanisms.

[0026] Combination Figures 5-9 As shown, a limiting block 16 is elastically connected to one side of the pressing member 502. The limiting block 16 is configured to enable the sliding sleeve 12 to slide unidirectionally relative to the pressing member 502. Specifically, the pressing member 502 is provided with a stepped hole for the lead screw 11 to pass through, and one end of the sliding sleeve 12 inserted into the stepped hole extends outward along its diameter to form a flange to prevent the sliding sleeve 12 from separating from the pressing member 502. Multiple sets of annular grooves 1201 are evenly formed on the outer circumferential surface of the sliding sleeve 12, and one end of the limiting block 16 inserted into the stepped hole cooperates with the annular grooves 1201. (Refer to...) Figure 9 As shown, the end of the limiting block 16 inserted into the stepped hole is provided with an inclined surface 1602. During the process of the sliding sleeve 12 being inserted into the lower pressing member 502, the inclined surface 1602 will contact the outer edge of the annular groove 1201, so that the sliding sleeve 12 can only be inserted into the lower pressing member 502 in one direction. Through this structure, when the upper pressing member 501 is released relative to the lower pressing member 502, the sliding sleeve 12 and the lower pressing member 502 are locked, thereby preventing the limiting spring 7 from pushing the lower pressing member 502, so that the lifting assembly 3 can be stably deflected as a whole.

[0027] The limiting block 16 has a cross-shaped structure, allowing the guide rod fixed on the pressing member 502 to pass through the limiting block 16 and slide with it. A spring is provided between the limiting block 16 and the pressing member 502 to achieve an elastic fit between them. The limiting block 16 extends out from the guide channel on the slide rail 4, and a guide bar 10 is fixedly provided on the outer wall of the slide rail 4. The outer side of the guide bar 10 is recessed inward to form a recess 1001. Specifically, during the process of the slider 301 being pushed to the end of the slide rail 4, the rotating shaft 1601 rotatably connected to the limiting block 16 slides along the outer side of the guide bar 10 to the recess 1001, so that one end of the limiting block 16 fits against the outer circumferential surface of the sliding sleeve 12 and can cooperate with the annular groove 1201.

[0028] Combination Figure 10 As shown, a connecting block 5011 is fixedly provided at the bottom of the upper pressing member 501. The connecting block 5011 has a T-shaped structure, and a T-shaped groove is opened on the top surface of the upper pressing member 501 to slide and cooperate with the connecting block 5011. In this way, the upper pressing member 501 can be slidably assembled on the top of the lower pressing member 502.

[0029] Combination Figure 1 , Figure 2 As shown, the rod 302 on the lifting assembly 3 passes through the slider 301 and the upper pressure member 501 respectively and rotates with them. The lead screw 11 passes through the slider 301 along its axial direction and the slider 301 can slide relative to the lead screw 11. Figure 1 as well as Figure 2 The image only shows a guide groove 103 on one side of the base 102. In actual use, to improve the stability of the base 102, a side plate can be arranged on the side of the base 102 away from the detection device 1, and the side plate is also provided with a guide groove 103 that cooperates with the guide block 1021. Figure 4 As shown, the rod 302 at the top of the lifting assembly 3 and on the side near the slider 301 is rotatably engaged with the base at the bottom of the lifting platform 2, and a square block 9 is rotatably provided at the end of the rod 302 on the other side, which is slidably engaged with the track fixed at the bottom of the lifting platform 2.

[0030] Combination Figure 5As shown, a disc 6 can be installed on the top of the lifting platform 2. The disc 6 can rotate relative to the lifting platform 2, and the disc 6 is provided with screw holes that match the mounting holes on the reducer assembly, which facilitates fixing the reducer assembly to the disc 6. Specifically, the side of the lifting platform 2 needs to be threaded with a clamping bolt to lock the disc 6, that is, the end of the clamping bolt is attached to the outer circumferential surface of the disc 6, so that the disc 6 can be locked to the lifting platform 2 during the rotation of the clamping bolt. In this way, in conjunction with the deflection of the lifting component 3, the pressure head 101 on the detection device 1 can correspond to the detection points in various directions on the inner wall of the reducer assembly.

[0031] Combination Figure 7 As shown, the pressing member 502 is provided with a mounting groove for mounting the locking block 5021 and the sliding rod 5022, allowing the locking block 5021 and the sliding rod 5022 to slide relative to the pressing member 502. An elastic element, such as a spring, is provided between the locking block 5021 and the end of the mounting groove. In this way, when the locking block 5021 is aligned with the slot 5012, the elastic element can eject the locking block 5021 and insert it into the slot 5012. Furthermore, the pressing member 502 also has a recessed portion communicating with the stepped hole for mounting the swing rod 13. Figure 7 As can be seen, a pin 14 is provided on the rocker arm 13 at the position between the stepped hole and the mounting groove. The pin 14 passes through the rocker arm 13 and rotates with it. The pin 14 is fixedly connected to the pressing member 502, so that the sliding sleeve 12 can drive the rocker arm 13 to deflect around the pin 14 during the process of pressing the rocker arm 13.

[0032] The above-disclosed examples are merely preferred embodiments of this application, intended to facilitate understanding and implementation by those skilled in the art. However, they cannot be used to limit the scope of this application. Therefore, equivalent variations made within the scope of this application are still within the scope of this application.

Claims

1. A performance testing device for a hydraulic motor reducer assembly, comprising a testing device (1) for strength testing of the reducer assembly, wherein a base (102) is provided on one side of the testing device (1), characterized in that, Also includes: The lifting assembly (3) has a lifting platform (2) at the top for fixing the reducer assembly. The bottom ends of the lifting assembly (3) are respectively equipped with a slider (301) and a sliding member (5). The slider (301) and the sliding member (5) slide on the slide rail (4). The lead screw (11) is located at the slide rail (4) and can drive the slider (5) to slide along the slide rail (4). When the slider (301) slides to the end of the slide rail (4) and the lead screw (11) drives the slider (5) to approach the slider (301), the lifting assembly (3) can unfold and drive the lifting platform (2) to move upward, so that the screw (201) at the top of the lifting platform (2) passes through the preset through hole on the base (102) to lock the lifting platform (2) with the base (102).

2. The performance testing device for a hydraulic motor reducer assembly according to claim 1, characterized in that: The sliding member (5) includes an upper pressing member (501) and a lower pressing member (502), and the upper pressing member (501) and the lower pressing member (502) are engaged by a snap-fit ​​mechanism. The screw (11) is threaded with a threaded sleeve (8) on the outside. The threaded sleeve (8) is elastically connected to the lower pressing member (502), and a sliding sleeve (12) is provided between the threaded sleeve (8) and the lower pressing member (502). When the sliding sleeve (12) moves relative to the lower pressing member (502), the snap-fit ​​mechanism can release the upper pressing member (501) onto the top of the lower pressing member (502).

3. The performance testing device for a hydraulic motor reducer assembly according to claim 2, characterized in that: The locking mechanism includes a locking block (5021) disposed on the top surface of the lower pressing member (502) and elastically engaged with the lower pressing member (502). The bottom surface of the upper pressing member (501) is provided with a locking groove (5012) that engages with the locking block (5021). A sliding rod (5022) is fixedly disposed on the side of the locking block (5021) away from the upper pressing member (501). A protrusion (15) is provided on the sliding rod (5022). The lower pressing member (502) A rocker arm (13) is hinged to the upper part. The protrusion (15) is slidably engaged with the strip groove (1301) provided on the rocker arm (13). When the sliding sleeve (12) slides relative to the lower pressure member (502) and presses against the rocker arm (13), during the deflection of the rocker arm (13), the cooperation between the strip groove (1301) and the protrusion (15) can pull the sliding rod (5022) and the locking block (5021) to move away from the upper pressure member (501).

4. The performance testing device for a hydraulic motor reducer assembly according to claim 3, characterized in that: The detection device (1) is provided with an arc-shaped guide groove (103), and a guide block (1021) that fits into the guide groove (103) is fixedly provided on the side wall of the base (102). When the slider (301) is pushed to the end of the slide rail (4), the axis of the rod (302) that cooperates with the slider (301) coincides with the axis of the guide groove (103).

5. The performance testing device for a hydraulic motor reducer assembly according to claim 2, characterized in that: The pressure member (502) is elastically connected to a limiting block (16) on one side, and the limiting block (16) is configured to enable the sliding sleeve (12) to slide unidirectionally relative to the pressure member (502).

6. The performance testing device for a hydraulic motor reducer assembly according to claim 5, characterized in that: Multiple sets of annular grooves (1201) are evenly provided on the outer circumferential surface of the sliding sleeve (12). The end of the limiting block (16) that is in contact with the outer circumferential surface of the sliding sleeve (12) is provided with an inclined surface (1602), so that the sliding sleeve (12) can only be inserted into the pressing member (502) in one direction.

7. The performance testing device for a hydraulic motor reducer assembly according to claim 2, characterized in that: The rods (302) on the lifting assembly (3) pass through the slider (301) and the upper pressure member (501) respectively and rotate with both. The lead screw (11) is set to pass through the slider (301) and the lower pressure member (502) along its axial direction.

8. The performance testing device for a hydraulic motor reducer assembly according to claim 1, characterized in that: A disc (6) is installed on the top of the lifting platform (2), and the disc (6) rotates with the lifting platform (2).

9. The performance testing device for a hydraulic motor reducer assembly according to claim 4, characterized in that: The guide block (1021) slides within the guide groove (103), and both the guide block (1021) and the guide groove (103) have a T-shaped cross-section.

10. The performance testing device for a hydraulic motor reducer assembly according to claim 3, characterized in that: The card block (5021) is perpendicular to the top surface of the pressing member (502).

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