CN220650005U - General rear triangle swing testing machine - Google Patents

Abstract

The utility model discloses a universal rear triangle swing testing machine, which comprises a workbench, wherein a frame fixing device and a frame swing testing device are arranged on the top surface of the workbench, the frame fixing device comprises a vertical plate extending up and down and a first sliding rail vertically arranged on the rear end surface of the vertical plate, a first sliding block and a second sliding block are respectively arranged at the upper end and the lower end of the first sliding rail in a sliding manner, a second sliding rail extending back and forth is arranged on the right side wall of the first sliding block, a third sliding block is arranged on the second sliding rail in a sliding manner, a rotating shaft extending rightward is arranged on the third sliding block, the rotating shaft is in running fit with the middle part of a rotating wheel, a connecting block extending rightward is arranged at the edge of the rotating wheel, and a first connecting shaft extending rightward is arranged on the right side wall of the second sliding block. The utility model has reasonable structural design, and can well test the left-right swing strength of the rear triangle of various frames, thereby greatly reducing the test cost.

Description

General rear triangle swing testing machine

Technical Field

The utility model relates to the technical field of testing machines for rear triangles of frames, in particular to a universal rear triangle swing testing machine.

Background

Referring to fig. 1, a frame (10) of a carbon fiber bicycle comprises a head pipe (11), an upper pipe (12), a lower pipe (13), a seat pipe (14), a seat stay (15), a bottom fork (16), a connecting hole (17) and a five-way pipe (18), wherein rear parts of the frame (10) are connected to form a frame rear triangle (19), and the specific connection relation is shown in fig. 1.

In order to test the left-right swing strength of the rear triangle (19) of the frame (10), the conventional testing machine is generally designed specifically according to the structure of the rear triangle (19) of the frame (10) to be tested, such as a corresponding testing machine is designed specifically for a carbon fiber shock-absorbing frame, but in the practical application process, the rear triangle structure of each frame is different, so that the conventional testing machine cannot be used for the rear triangle of various frames, and the corresponding testing machine is required to be designed specifically before each frame is tested, thereby greatly improving the testing cost.

Disclosure of Invention

The utility model aims to provide a universal rear triangle swing testing machine, which aims to solve the technical problems that the existing testing machine cannot be used for universal rear triangles of frames of various frames, so that a corresponding testing machine is required to be specially designed before each frame is tested, and the testing cost is greatly improved.

In order to achieve the above purpose, the technical scheme of the utility model provides a universal rear triangle swing testing machine, which comprises a workbench, wherein a frame fixing device and a frame swing testing device are arranged on the top surface of the workbench, the frame fixing device comprises a vertical plate extending up and down and a first sliding rail vertically arranged on the rear end surface of the vertical plate, the upper end and the lower end of the first sliding rail are respectively provided with a first sliding block and a second sliding block in a sliding manner, the right side wall of the first sliding block is provided with a second sliding rail extending back and forth, the second sliding rail is provided with a third sliding block in a sliding manner, the third sliding block is provided with a rotating shaft extending right, the rotating shaft is in running fit with the middle part of a rotating wheel, the edge of the rotating wheel is provided with a connecting block extending right, and the right side wall of the second sliding block is provided with a first connecting shaft extending right; the frame swing testing device comprises a third sliding rail and a servo electric cylinder, wherein the third sliding rail is arranged at the rear of the frame fixing device, a fourth sliding block is arranged on the third sliding rail in a sliding mode, the servo electric cylinder can drive the fourth sliding block to slide left and right along the third sliding rail, a supporting column extending upwards is arranged on the fourth sliding block, and second connecting shafts extending left and right are respectively arranged at the left end and the right end of the top of the supporting column.

Further, the servo electric cylinder is arranged on the right side or the left side of the third sliding rail, a driving rod is arranged at one end, close to the fourth sliding block, of the servo electric cylinder, the driving rod is connected with the fourth sliding block, and the driving rod can drive the fourth sliding block to slide left and right along the third sliding rail.

Further, a load cell is connected between the driving rod and the fourth sliding block, an operation control screen is arranged in front of the servo electric cylinder, and a signal transmission line is connected between the operation control screen and the load cell as well as between the operation control screen and the servo electric cylinder.

Further, the top of support column is equipped with along controlling the mounting hole that link up, the upper sidewall of mounting hole is equipped with the third screw hole that upwards link up, the second connecting axle passes the mounting hole, install the third locking screw in the third screw hole, the third locking screw compresses tightly downwards the middle part of second connecting axle, in order to right the second connecting axle compresses tightly fixedly, the both ends of second connecting axle wear out the outside of mounting hole.

Further, the riser rear end face still is equipped with from top to bottom first fixing base, second fixing base, third fixing base, the fourth fixing base that distributes in proper order, first fixing base the second fixing base respectively with the upper and lower both ends normal running fit of first screw rod, the third fixing base the fourth fixing base respectively with the upper and lower both ends normal running fit of second screw rod, first screw rod with first slider screw thread drive connection, the second screw rod with second slider screw thread drive connection.

Further, the frame fixing device further comprises a fourth sliding rail extending forwards and backwards, a fifth sliding block is arranged on the fourth sliding rail, the vertical plate is arranged on the fifth sliding block, a fifth fixing seat and a sixth fixing seat are respectively arranged at the front end and the rear end of the fourth sliding rail, the fifth fixing seat and the sixth fixing seat are respectively in running fit with the front end and the rear end of a third screw rod, and the third screw rod is in threaded transmission connection with the fifth sliding block.

Further, the front end of the third screw rod penetrates through the fifth fixing seat to be connected with the rotating handle, a bottom frame is arranged at the bottom of the workbench, a movable slot hole extending forwards and backwards is formed in the workbench, the bottom of the second screw rod penetrates through the fourth fixing seat, the movable slot hole and the rotating handle in sequence, and the top of the first screw rod penetrates through the first fixing seat upwards to be connected with the rotating handle.

Further, two reinforcing ribs distributed left and right are connected between the front end face of the vertical plate and the fifth sliding block.

Further, the top of third slider is equipped with the limiting plate of bending to the left, the limiting plate is pressed the second slide rail top surface, be equipped with on the limiting plate along the first screw hole that extends from top to bottom, install first locking screw in the first screw hole, first locking screw compresses tightly downwards the top surface of third slider, in order to right the limiting plate compresses tightly fixedly.

Further, the rotating wheel is far away from one side edge of the connecting block and is provided with an arc-shaped slot hole, the arc-shaped slot hole and the rotating wheel are coaxially arranged, two second screw holes are formed in the right side wall of the third sliding block and are sequentially distributed along the length direction of the arc-shaped slot hole, a second locking screw is arranged on the arc-shaped slot hole and is pressed leftwards to be in threaded connection with the rotating wheel so as to be pressed and fixed with the rotating wheel.

In summary, the technical scheme of the utility model has the following beneficial effects: the utility model has reasonable structural design, the frame fixing device comprises a vertical plate extending up and down and a first sliding rail vertically arranged on the rear end surface of the vertical plate, the upper end and the lower end of the first sliding rail are respectively provided with a first sliding block and a second sliding block in a sliding way, the right side wall of the first sliding block is provided with a second sliding rail extending front and back, the second sliding rail is provided with a third sliding block in a sliding way, the third sliding block is provided with a rotating shaft extending rightward, the rotating shaft is in running fit with the middle part of the rotating wheel, the edge of the rotating wheel is provided with a connecting block extending rightward, and the right side wall of the second sliding block is provided with a first connecting shaft extending rightward; therefore, the seat tube can be assembled and fixed by utilizing the connecting block, the five-way pipe is assembled and fixed by utilizing the first connecting shaft, the first sliding block and the second sliding block can move up and down, and the third sliding block can move back and forth, so that the frame fixing device can adapt to the sizes of triangle structures behind frames of various frames, and simultaneously, the rotating wheels where the connecting blocks are positioned can rotate around the rotating shaft, so that the triangle structures behind frames of various frames can be adjusted around the first connecting shaft in an adaptive manner, and the frame fixing device can adapt to the shapes of triangle structures behind frames of various frames. (2) The device comprises a frame swing testing device and a frame fixing device, wherein the frame swing testing device comprises a third sliding rail and a servo electric cylinder, the third sliding rail is arranged at the rear of the frame fixing device, a fourth sliding block is slidably arranged on the third sliding rail, the servo electric cylinder can drive the fourth sliding block to slide left and right along the third sliding rail, a supporting column extending upwards is arranged on the fourth sliding block, and the left end and the right end of the top of the supporting column are respectively provided with a second connecting shaft extending left and right; therefore, the two connecting holes of the rear triangle of the frame can be assembled and fixed by using the left and right ends of the second connecting shaft, and when the servo electric cylinder drives the fourth sliding block to slide left and right along the third sliding rail, the fourth sliding block sequentially drives the support column and the rear triangle of the frame of the second connecting shaft to swing left and right, so that the left and right swinging of the rear triangle of the frame is simulated, and the left and right swinging test of the rear triangles of frames of various frames is completed. According to analysis, the frame fixing device is matched with the frame swing testing device, so that the frame rear triangle of various frames can be used universally, a corresponding testing machine is not required to be specially designed before each frame is tested, and the frame rear triangle of various frames can be well tested for the left and right swing strength, so that the testing cost is greatly reduced.

Drawings

FIG. 1 is a schematic perspective view of a vehicle frame tested in accordance with the present utility model;

FIG. 2 is a schematic perspective view of a first view angle of the present utility model;

FIG. 3 is a schematic perspective view of a frame fixing device according to the present utility model;

FIG. 4 is a schematic perspective view of a first slider of the present utility model;

FIG. 5 is a schematic perspective view of a second slider of the present utility model;

FIG. 6 is a schematic perspective view of a fourth slider of the present utility model;

FIG. 7 is a schematic perspective view of a second view of the present utility model;

FIG. 8 is a schematic perspective view of the present utility model assembled with an upper frame;

FIG. 9 is a schematic perspective view of the connecting block of the present utility model when the upper seat tube is assembled;

FIG. 10 is a schematic perspective view of the present utility model showing the first connecting shaft assembled with the five-way and second connecting shaft assembled with the connecting hole;

reference numerals illustrate: the device comprises a 1-workbench, a 101-movable slot, a 2-frame fixing device, a 201-vertical plate, a 202-first sliding rail, a 203-first sliding block, a 204-second sliding block, a 205-second sliding rail, a 206-third sliding block, a 2061-rotating shaft, a 2062-limiting plate, a 2063-first screw hole, a 2064-second screw hole, a 207-rotating wheel, a 2071-arc slot, a 208-connecting block, a 209-first connecting shaft, a 3-frame swing testing device, a 301-third sliding rail, a 302-servo cylinder, a 3021-driving rod, a 303-fourth sliding block, a 304-supporting column, a 3041-mounting hole, a 3042-third screw hole, a 305-second connecting shaft, a 306-load cell, a 4-operation control screen, a 5-first screw, a 501-first fixed seat, a 502-second fixed seat, a 6-second screw, a 601-third fixed seat, a 602-fourth fixed seat, a 7-bottom frame, an 8-fourth sliding rail, a 801-fifth sliding block, a 802-fifth screw, a 803-sixth fixed seat, a 803-third fixed seat, and a 9-reinforcing bar.

10-frame, 11-head pipe, 12-upper pipe, 13-lower pipe, 14-seat pipe, 15-seat stay, 16-bottom stay, 17-connecting hole, 18-five-way and 19-frame rear triangle.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, but the scope of protection of the present utility model is not limited.

In the present utility model, for a clearer description, the following description is made: the observer views fig. 8 with the left side of the observer set to the left, the right side of the observer set to the right, the front of the observer set to the front, the rear of the observer set to the rear, the upper side of the observer set to the upper side, and the lower side of the observer set to the lower side, and it should be noted that the terms "front end", "rear end", "left side", "right side", "middle part", "upper side", "lower side", and the like in this text indicate orientations or positional relationships based on the orientations or positional relationships set forth in the drawings, and are merely for the sake of clarity of description of the present utility model, rather than to indicate or imply that the structures or components to be referred to must have specific orientations, be structured in specific orientations, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," "fourth" and the like are used for clarity or to simplify the description, and are not to be construed as indicating or implying a relative importance or quantity.

Referring to fig. 1 to 10, the present embodiment provides a universal rear triangle swing testing machine, including a workbench 1, wherein a frame fixing device 2 and a frame swing testing device 3 are provided on the top surface of the workbench 1, the frame fixing device 2 includes a vertical plate 201 extending up and down and a first sliding rail 202 vertically provided on the rear end surface of the vertical plate 201, the upper and lower ends of the first sliding rail 202 are respectively provided with a first sliding block 203 and a second sliding block 204 in a sliding manner, the right side wall of the first sliding block 203 is provided with a second sliding rail 205 extending forward and backward, the second sliding rail 205 is provided with a third sliding block 206 in a sliding manner, the third sliding block 206 is provided with a rotating shaft 2061 extending rightward, the rotating shaft 2061 is in rotation fit with the middle part of a rotating wheel 207, the edge of the rotating wheel 207 is provided with a connecting block 208 extending rightward, and the right side wall of the second sliding block 204 is provided with a first connecting shaft 209 extending rightward; the frame swing testing device 3 comprises a third sliding rail 301 extending leftwards and rightwards and a servo electric cylinder 302, the third sliding rail 301 is arranged at the rear of the frame fixing device 2, a fourth sliding block 303 is arranged on the third sliding rail 301 in a sliding mode, the servo electric cylinder 302 can drive the fourth sliding block 303 to slide leftwards and rightwards along the third sliding rail 301, a supporting column 304 extending upwards is arranged on the fourth sliding block 303, and second connecting shafts 305 extending leftwards and rightwards are respectively arranged at the left end and the right end of the top of the supporting column 304. The function is as follows: (1) The frame fixing device comprises a vertical plate extending up and down and a first sliding rail vertically arranged on the rear end face of the vertical plate, wherein a first sliding block and a second sliding block are respectively arranged at the upper end and the lower end of the first sliding rail in a sliding mode, a second sliding rail extending front and back is arranged on the right side wall of the first sliding block, a third sliding block is arranged on the second sliding rail in a sliding mode, a rotating shaft extending rightward is arranged on the third sliding block, the rotating shaft is in rotary fit with the middle of the rotating wheel, a connecting block extending rightward is arranged at the edge of the rotating wheel, and a first connecting shaft extending rightward is arranged on the right side wall of the second sliding block; therefore, the seat tube can be assembled and fixed by utilizing the connecting block, the five-way pipe is assembled and fixed by utilizing the first connecting shaft, the first sliding block and the second sliding block can move up and down, and the third sliding block can move back and forth, so that the frame fixing device can adapt to the sizes of triangle structures behind frames of various frames, and simultaneously, the rotating wheels where the connecting blocks are positioned can rotate around the rotating shaft, so that the triangle structures behind frames of various frames can be adjusted around the first connecting shaft in an adaptive manner, and the frame fixing device can adapt to the shapes of triangle structures behind frames of various frames. (2) The device comprises a frame swing testing device and a frame fixing device, wherein the frame swing testing device comprises a third sliding rail and a servo electric cylinder, the third sliding rail is arranged at the rear of the frame fixing device, a fourth sliding block is slidably arranged on the third sliding rail, the servo electric cylinder can drive the fourth sliding block to slide left and right along the third sliding rail, a supporting column extending upwards is arranged on the fourth sliding block, and the left end and the right end of the top of the supporting column are respectively provided with a second connecting shaft extending left and right; therefore, the two connecting holes of the rear triangle of the frame can be assembled and fixed by using the left and right ends of the second connecting shaft, and when the servo electric cylinder drives the fourth sliding block to slide left and right along the third sliding rail, the fourth sliding block sequentially drives the support column and the rear triangle of the frame of the second connecting shaft to swing left and right, so that the left and right swinging of the rear triangle of the frame is simulated, and the left and right swinging test of the rear triangles of frames of various frames is completed. According to analysis, the frame fixing device is matched with the frame swing testing device, so that the frame rear triangle of various frames can be used universally, a corresponding testing machine is not required to be specially designed before each frame is tested, and the frame rear triangle of various frames can be well tested for the left and right swing strength, so that the testing cost is greatly reduced.

Specifically, the servo cylinder 302 is disposed on the right or left side of the third sliding rail 301, and a driving rod 3021 is disposed at one end of the servo cylinder 302 near the fourth sliding rail 303, where the driving rod 3021 is connected to the fourth sliding rail 303, and the driving rod 3021 can drive the fourth sliding rail 303 to slide left and right along the third sliding rail 301. The function is as follows: by starting the electric cylinder, the driving rod 3021 is used to drive the fourth slider to move left and right, so as to drive the rear triangle of the frame to swing left and right.

Specifically, a load cell 306 is connected between the driving rod 3021 and the fourth slider 303, an operation control panel 4 is provided in front of the servo cylinder 302, and a signal transmission line is connected between the operation control panel 4 and the load cell 306 and between the servo cylinder 302. The function is as follows: the load cell, namely the pressure sensor, is arranged, so that the tested pressure data can be well transmitted to the operation control screen 4 for processing, and an operator can control the running state of the servo electric cylinder 302 through the operation control screen 4.

Specifically, the top of the support column 304 is provided with a mounting hole 3041 penetrating left and right, the upper side wall of the mounting hole 3041 is provided with a third screw hole 3042 penetrating upward, the second connecting shaft 305 penetrates through the mounting hole 3041, a third locking screw is installed in the third screw hole 3042, the third locking screw presses down the middle part of the second connecting shaft 305 to press and fix the second connecting shaft 305, and two ends of the second connecting shaft 305 penetrate out of the mounting hole 3041. The function is as follows: after the second connection shaft 305 is mounted in place in the mounting hole 3041, the second connection shaft 305 can be fixed by locking with the third locking screw.

Specifically, the rear end face of the riser 201 is further provided with a first fixing seat 501, a second fixing seat 502, a third fixing seat 601 and a fourth fixing seat 602 which are sequentially distributed from top to bottom, the first fixing seat 501 and the second fixing seat 502 are respectively in running fit with the upper end and the lower end of the first screw 5, the third fixing seat 601 and the fourth fixing seat 602 are respectively in running fit with the upper end and the lower end of the second screw 6, the first screw 5 is in threaded transmission connection with the first slider 203, and the second screw 6 is in threaded transmission connection with the second slider 204. The function is as follows: the first slider 203 is driven to move up and down by the rotation of the first screw 5, and the second slider 204 is driven to move up and down by the rotation of the second screw 6.

Specifically, the frame fixing device 2 further includes a fourth sliding rail 8 extending along the front and rear directions, a fifth sliding block 801 is disposed on the fourth sliding rail 8, the riser 201 is disposed on the fifth sliding block 801, a fifth fixing seat 802 and a sixth fixing seat 803 are respectively disposed at the front and rear ends of the fourth sliding rail 8, the fifth fixing seat 802 and the sixth fixing seat 803 are respectively in running fit with the front and rear ends of the third screw 804, and the third screw 804 is in threaded transmission connection with the fifth sliding block 801. The function is as follows: through the rotation of the third screw 804, the fifth sliding block 801 is driven to move back and forth, so that the vertical plate 201 moves back and forth, and the rear triangle of the frame with different sizes and shapes is more convenient to adapt.

Specifically, the front end of the third screw 804 passes through the fifth fixing seat 802 to be connected with the rotating handle, the bottom of the workbench 1 is provided with a bottom frame 7, the workbench 1 is provided with a movable slot 101 extending back and forth, the bottom of the second screw 6 sequentially passes through the fourth fixing seat 602, the movable slot 101 and is connected with the rotating handle, and the top of the first screw 5 passes upward through the first fixing seat 501 and is connected with the rotating handle. The function is as follows: the rotation of the corresponding handles can drive the rotation of the first screw 5, the second screw 6 and the third screw 804.

Specifically, two reinforcing ribs 9 distributed in the left-right direction are connected between the front end surface of the riser 201 and the fifth slider 801. The function is as follows: through the setting of strengthening rib to improve the intensity of riser.

Specifically, the top of the third slider 206 is provided with a limiting plate 2062 bent to the left, the limiting plate 2062 is pressed on the top surface of the second sliding rail 205, the limiting plate 2062 is provided with a first screw hole 2063 extending up and down, a first locking screw is installed in the first screw hole 2063, and the first locking screw presses the top surface of the third slider 206 downwards to press and fix the limiting plate 2062. The function is as follows: the first locking screw is locked when the third slider 206 moves back and forth to a desired position, so that the third slider 206 can be fixed.

Specifically, an arc-shaped slot 2071 is disposed at an edge of one side of the rotating wheel 207 far away from the connecting block 208, the arc-shaped slot 2071 and the rotating wheel 207 are coaxially disposed, two second screw holes 2064 are disposed on a right side wall of the third slider 206, the two second screw holes 2064 are sequentially distributed along a length direction of the arc-shaped slot 2071, second locking screws are disposed on the arc-shaped slot 2071, and the second locking screws press the rotating wheel 207 leftwards and are in threaded connection with the second screw holes 2064 so as to press and fix the rotating wheel 207. The function is as follows: after the rotating wheel 207 is rotated to a desired angle, the second locking screw is locked, so that the rotating wheel can be fixed.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.

Claims (10)

1. The utility model provides a general back triangle swing test machine, includes workstation (1), its characterized in that: the top surface of workstation (1) is equipped with frame fixing device (2), frame swing testing arrangement (3), frame fixing device (2) include along riser (201) and the vertical setting that extend from top to bottom in first slide rail (202) of riser (201) rear end face, the upper and lower both ends of first slide rail (202) are provided with first slider (203), second slider (204) in the slip respectively, the right side wall of first slider (203) is equipped with second slide rail (205) along extending from front to back, slide on second slide rail (205) and be provided with third slider (206), be equipped with axis of rotation (2061) that extend right on third slider (206), axis of rotation (2061) and the middle part normal running fit of rotor (207), the edge of rotor (207) is equipped with connecting block (208) that extend right, the right side wall of second slider (204) is equipped with first connecting axle (209) that extend right. The frame swing testing device (3) comprises a third sliding rail (301) and a servo electric cylinder (302) which extend left and right, the third sliding rail (301) is arranged at the rear of the frame fixing device (2), a fourth sliding block (303) is arranged on the third sliding rail (301) in a sliding mode, the servo electric cylinder (302) can drive the fourth sliding block (303) to slide left and right along the third sliding rail (301), supporting columns (304) extending upwards are arranged on the fourth sliding block (303), and second connecting shafts (305) extending left and right are respectively arranged at the left ends and the right ends of the top of the supporting columns (304).

2. The universal rear triangle swing testing machine of claim 1, wherein: the servo electric cylinder (302) is arranged on the right side or the left side of the third sliding rail (301), a driving rod (3021) is arranged at one end, close to the fourth sliding block (303), of the servo electric cylinder (302), the driving rod (3021) is connected with the fourth sliding block (303), and the driving rod (3021) can drive the fourth sliding block (303) to slide left and right along the third sliding rail (301).

3. The universal rear triangle swing testing machine of claim 2, wherein: a load cell (306) is connected between the driving rod (3021) and the fourth sliding block (303), an operation control screen (4) is arranged in front of the servo electric cylinder (302), and a signal transmission line is connected between the operation control screen (4) and the load cell (306) and between the operation control screen and the servo electric cylinder (302).

4. The universal rear triangle swing testing machine of claim 1, wherein: the top of support column (304) is equipped with along controlling mounting hole (3041) that link up, the upper side wall of mounting hole (3041) is equipped with third screw hole (3042) that link up upwards, second connecting axle (305) are passed mounting hole (3041), install the third locking screw in third screw hole (3042), the third locking screw compresses tightly downwards the middle part of second connecting axle (305), in order to right second connecting axle (305) compresses tightly fixedly, the both ends of second connecting axle (305) are worn out to the outside of mounting hole (3041).

5. A universal rear triangle swing testing machine according to any one of claims 1 to 4, wherein: the vertical plate is characterized in that a first fixing seat (501), a second fixing seat (502), a third fixing seat (601) and a fourth fixing seat (602) which are sequentially distributed from top to bottom are further arranged on the rear end face of the vertical plate (201), the first fixing seat (501) is respectively in rotary fit with the upper end and the lower end of a first screw rod (5), the third fixing seat (601) is respectively in rotary fit with the upper end and the lower end of a second screw rod (6), the first screw rod (5) is in threaded transmission connection with a first sliding block (203), and the second screw rod (6) is in threaded transmission connection with a second sliding block (204).

6. The universal rear triangle swing testing machine according to claim 5, wherein: the frame fixing device (2) further comprises a fourth sliding rail (8) extending forwards and backwards, a fifth sliding block (801) is arranged on the fourth sliding rail (8), a vertical plate (201) is arranged on the fifth sliding block (801), a fifth fixing seat (802) and a sixth fixing seat (803) are respectively arranged at the front end and the rear end of the fourth sliding rail (8), the fifth fixing seat (802) and the sixth fixing seat (803) are respectively in running fit with the front end and the rear end of a third screw rod (804), and the third screw rod (804) is in threaded transmission connection with the fifth sliding block (801).

7. The universal rear triangle swing testing machine according to claim 6, wherein: the front end of the third screw rod (804) penetrates through the fifth fixing seat (802) to be connected with the rotating handle, a bottom frame (7) is arranged at the bottom of the workbench (1), movable slotted holes (101) extending forwards and backwards are formed in the workbench (1), the bottom of the second screw rod (6) penetrates through the fourth fixing seat (602) downwards in sequence, the movable slotted holes (101) are connected with the rotating handle, and the top of the first screw rod (5) penetrates through the first fixing seat (501) upwards to be connected with the rotating handle.

8. The universal rear triangle swing testing machine according to claim 6, wherein: two reinforcing ribs (9) distributed left and right are connected between the front end surface of the vertical plate (201) and the fifth sliding block (801).

9. A universal rear triangle swing testing machine according to any one of claims 1 to 4, 6 to 8, wherein: the top of third slider (206) is equipped with limiting plate (2062) of bending to the left, limiting plate (2062) is pressed second slide rail (205) top surface, be equipped with on limiting plate (2062) along first screw hole (2063) that extend from top to bottom, install first locking screw in first screw hole (2063), first locking screw compresses tightly downwards the top surface of third slider (206), in order to right limiting plate (2062) compresses tightly fixedly.

10. A universal rear triangle swing testing machine according to any one of claims 1 to 4, 6 to 8, wherein: the rotating wheel (207) is far away from one side edge of the connecting block (208) and is provided with an arc-shaped slotted hole (2071), the arc-shaped slotted hole (2071) and the rotating wheel (207) are coaxially arranged, two second screw holes (2064) are formed in the right side wall of the third sliding block (206), the two second screw holes (2064) are sequentially distributed along the length direction of the arc-shaped slotted hole (2071), the arc-shaped slotted hole (2071) is provided with second locking screws, and the second locking screws are used for compressing the rotating wheel (207) leftwards and are in threaded connection with the second screw holes (2064) so as to compress and fix the rotating wheel (207).