阅读说明：本技术 一种中心距可调的磨耗仪旋转机架组件 (Center distance adjustable abrasion instrument rotating frame assembly ) 是由 朱建新 倪耀中 于 2021-08-18 设计创作，主要内容包括：本发明公开了一种中心距可调的磨耗仪旋转机架组件,旨在提供一种在实验时不需要调整位置的中心距可调的磨耗仪旋转机架组件。它包括底架和机架,底架上设有电机、减速机和轴体,电机和减速机均与底架可拆卸连接,减速机的顶部设有输入轴,减速机的底部设有输出轴,电机的输出端上设有皮带,电机通过皮带与输入轴传动连接,输出轴上设有传动链,轴体与底架转动连接,机架的形状为圆形,轴体的顶部与机架的中心连接,轴体的底部通过传动链与输出轴传动连接,机架的边缘连接有若干个均匀分布的车轮组件。本发明的有益效果是：在实验时不需要调整位置；操作简单方便；有利于提高机架的强度,以保证机架的正常旋转。(The invention discloses a center distance adjustable wear meter rotating frame assembly, and aims to provide a center distance adjustable wear meter rotating frame assembly without adjusting the position during an experiment. It includes chassis and frame, be equipped with the motor on the chassis, speed reducer and axis body, motor and speed reducer all can dismantle with the chassis and be connected, the top of speed reducer is equipped with the input shaft, the bottom of speed reducer is equipped with the output shaft, be equipped with the belt on the output of motor, the motor passes through the belt and is connected with the input shaft transmission, be equipped with the driving chain on the output shaft, the axis body rotates with the chassis to be connected, the shape of frame is circular, the top of axis body is connected with the center of frame, the bottom of axis body is passed through the driving chain and is connected with output shaft transmission, the edge connection of frame has a plurality of evenly distributed's wheel subassembly. The invention has the beneficial effects that: the position does not need to be adjusted during the experiment; the operation is simple and convenient; the strength of the frame is improved, and normal rotation of the frame is guaranteed.)

1. A centre-to-centre spacing adjustable abrasion tester rotating frame assembly is characterized by comprising an underframe (1) and a frame (2), wherein a motor (3), a speed reducer (4) and a shaft body (5) are arranged on the underframe (1), the motor (3) and the speed reducer (4) are detachably connected with the underframe (1), an input shaft is arranged at the top of the speed reducer (4), an output shaft is arranged at the bottom of the speed reducer (4), a belt (6) is arranged at the output end of the motor (3), the motor (3) is in transmission connection with the input shaft through the belt (6), a transmission chain (7) is arranged on the output shaft, the shaft body (5) is in rotation connection with the underframe (1), the frame (2) is circular in shape, the top of the shaft body (5) is connected with the center of the frame (2), and the bottom of the shaft body (5) is in transmission connection with the output shaft through the transmission chain (7), the edge of the frame (2) is connected with a plurality of wheel components (8) which are uniformly distributed.

2. The abrasion meter rotating frame assembly with the adjustable center distance as claimed in claim 1, wherein the frame (2) comprises a plurality of connecting arms (9), a connecting column (10) is arranged at the top of the shaft body (5), the center of the connecting column (10) is on the central axis of the shaft body (5), the connecting column (10) is fixedly connected with the shaft body (5), the connecting arms (9) are uniformly distributed by taking the connecting column (10) as the center, one end of each connecting arm (9) is detachably connected with the side wall of the connecting column (10), and the other end of each connecting arm (9) is connected with the wheel assembly (8).

3. The rotating rack assembly for the abrasion tester with the adjustable center distance as claimed in claim 2, wherein a reinforcing pipe (11) is arranged between every two adjacent connecting arms (9), one end of each reinforcing pipe (11) is detachably connected with one connecting arm (9), and the other end of each reinforcing pipe (11) is detachably connected with the other connecting arm (9).

4. The rotary rack component of the abrasion tester with the adjustable center distance as claimed in claim 2, wherein the wheel component (8) comprises a wheel carrier (15) and a wheel body (16), one side of the wheel carrier (15) is provided with a sleeve (17) matched with the connecting arm (9), the wheel carrier (15) is connected with the connecting arm (9) in a sliding manner through the sleeve (17), the wheel body (16) is positioned at the other side corresponding to the wheel carrier (15), the wheel body (16) is connected with the wheel carrier (15) in a rotating manner, the top of the shaft body (5) is provided with a disc (18), the center of the disc (18) is connected with the shaft body (5) in a rotating manner, the rack (2) is positioned between the disc (18) and the underframe (1), the edge of the disc (18) is provided with a plurality of strip-shaped holes (19) corresponding to the sleeves (17), and the sleeve (17) is provided with a locking seat (20), locking seat (20) and sleeve pipe (17) fixed connection, be equipped with on locking seat (20) with bar hole (19) assorted locking piece, the locking piece can be dismantled with locking seat (20) and be connected.

5. The rotating rack assembly of the abrasion tester with the adjustable center-to-center distance as claimed in claim 4, wherein the locking member comprises a bolt (22), the locking seat (20) is provided with a threaded groove (21) corresponding to the strip-shaped hole (19), one end of the bolt (22) is located on one side of the disc (18) and is in threaded connection with the threaded groove (21), the other end of the bolt (22) penetrates through the strip-shaped hole (19) and is located on the other side corresponding to the disc (18), one end of the bolt (22) penetrating through the strip-shaped hole (19) is provided with a cap body (23), and the diameter of the cap body (23) is larger than the width of the strip-shaped hole (19).

6. The adjustable center-to-center distance wear gauge swivel frame assembly of claim 4, the connecting arm (9) comprises a first rotating arm pipe (12), a second rotating arm pipe (13) and a third rotating arm pipe (14), the first rotating arm pipe (12) and the second rotating arm pipe (13) are distributed up and down and are parallel to each other, one end of the first rotating arm pipe (12) is detachably connected with the side wall of the connecting column (10), the other end of the first rotating arm pipe (12) is fixedly connected with one end of the third rotating arm pipe (14) to form a whole, one end of the second rotating arm pipe (13) is fixedly connected with the other end of the third rotating arm pipe (14) to form a whole, the third rotating arm pipe (14) is obliquely arranged, the other end of the second rotating arm pipe (13) is matched with the sleeve (17), the wheel carrier (15) is connected with the second rotating arm pipe (13) in a sliding mode through a sleeve (17).

7. The rotary rack assembly for the abrader with the adjustable center-to-center distance as claimed in claim 4, 5 or 6, characterized in that the strip-shaped hole (19) is rectangular, one end of the strip-shaped hole (19) is close to the shaft body (5), the other end of the strip-shaped hole (19) is far away from the shaft body (5), and a plurality of strip-shaped holes (19) are uniformly distributed on the disk (18) in the same direction and are inclined around the shaft body (5).

8. A centre-to-centre distance adjustable wear meter rotating frame assembly according to claim 4, 5 or 6, characterized in that the centre of the disc (18) is provided with a first bearing (24), and the disc (18) is rotatably connected with the shaft body (5) through the first bearing (24).

9. The centre-to-centre distance adjustable wear meter rotating frame assembly according to claim 8, wherein the disc (18) comprises an inner ring (25) and an outer ring (26), the inner side wall of the inner ring (25) is rotatably connected with the shaft body (5) through a bearing I (24), the outer side wall of the inner ring (25) is provided with a plurality of uniformly distributed connecting rods (27), the structure of each connecting rod (27) is the same as that of the connecting arm (9), the inner ring (25) is fixedly connected with the inner side wall of the outer ring (26) through the connecting rods (27), and a plurality of strip-shaped holes (19) are uniformly distributed on the outer ring (26).

10. The rotary rack assembly of the abrasion meter with the adjustable center distance as claimed in claim 4, wherein the shaft body (5) comprises a shaft seat (28), a main shaft (29) and a first chain wheel (30), the shaft seat (28) is detachably connected with the chassis (1), the shaft seat (28) is perpendicular to the chassis (1), a through hole (31) is formed in the shaft seat (28), a plurality of second bearings (32) are sleeved on the main shaft (29), the main shaft (29) is rotatably connected with the shaft seat (28) through matching of the second bearings (32) and the inner side wall of the through hole (31), both ends of the main shaft (29) are located outside the through hole (31), one end of the main shaft (29) is fixedly connected with the connecting column (10) and rotatably connected with the center of the disc (18), and the other end of the main shaft (29) penetrates through the chassis (1) and is detachably connected with the first chain wheel (30), the output shaft is detachably connected with a second chain wheel (33), one end of the transmission chain (7) is sleeved on the first chain wheel (30), the other end of the transmission chain (7) is sleeved on the second chain wheel (33), and the main shaft (29) is in transmission connection with the output shaft under the transmission of the transmission chain (7).

Technical Field

The invention relates to the related technical field of abrasion instruments, in particular to an abrasion instrument rotating rack assembly with an adjustable center distance.

Background

The road marking is a mark such as a line, an arrow, characters, a vertical mark, a protruding marking and a contour mark which are arranged on a road surface and provide road information, and the degree of abrasion of the road marking under the action of wheels with different loads under different road conditions and different environments is detected, so that the road marking has very important significance, and a basis is provided for the problems of a road maintenance period, a marking material, marking durability, marking construction conditions and the like; the wear condition of the wheel under different working conditions, different road conditions and different loads and the road surface is an important index for evaluating the service life of the wheel, the quality of the wheel and the like, and the wear simulation test equipment for the wheel and the marked line is established, so that the service life of the tire and the marked line can be accelerated and predicted in a laboratory, the wear condition is checked, the road test is avoided, the whole test process is safe, reliable and rapid, and the result can be quantitatively identified.

Because according to different operating modes, testers need to repeatedly detect the marking, and the position of the simulation test equipment in the prior art needs to be continuously adjusted in different experimental processes, particularly in the process of simulating the abrasion condition of the marking when an automobile curve runs at a high speed, so that the position of the wheel corresponds to that of the marking, and the operation is inconvenient.

Disclosure of Invention

The invention provides a center distance adjustable abrasion meter rotating frame assembly which does not need to adjust the position during the experiment, and aims to overcome the defect that the position of simulation test equipment needs to be continuously adjusted during the experiment in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a centre-to-centre spacing adjustable wearing and tearing appearance rotating machine frame subassembly, it includes chassis and frame, be equipped with motor, speed reducer and axis body on the chassis, motor and speed reducer all can dismantle with the chassis and be connected, the top of speed reducer is equipped with the input shaft, the bottom of speed reducer is equipped with the output shaft, be equipped with the belt on the output of motor, the motor passes through the belt and is connected with the input shaft transmission, be equipped with the driving chain on the output shaft, the axis body rotates with the chassis to be connected, the shape of frame is circular, the top of axis body is connected with the center of frame, the bottom of axis body is passed through the driving chain and is connected with output shaft transmission, the edge connection of frame has a plurality of evenly distributed's wheel subassembly.

The improved bicycle is characterized in that a motor, a speed reducer and a shaft body are arranged on the underframe, the motor and the speed reducer are detachably connected with the underframe, an input shaft is arranged at the top of the speed reducer, an output shaft is arranged at the bottom of the speed reducer, a belt is arranged on the output end of the motor, the motor is in transmission connection with the input shaft through the belt, a transmission chain is arranged on the output shaft, the shaft body is in rotation connection with the underframe, the shape of the frame is circular, the top of the shaft body is connected with the center of the frame, the bottom of the shaft body is in transmission connection with the output shaft through the transmission chain, and the edge of the frame is connected with a plurality of wheel assemblies which are uniformly distributed. The motor passes through the operation of belt drive speed reducer, and it is rotatory that the speed reducer passes through the driving chain drive axis body, and axis body drive frame is rotatory for the frame takes wheel subassembly to realize repeatedly rolling along corresponding ring shape marking and tests, and easy operation is convenient, need not to change the position of equipment, has reached the purpose that does not need the adjustment position when the experiment.

As preferred, the frame includes a plurality of linking arms, the top of axis body is equipped with the spliced pole, the center of spliced pole is on the central axis of axis body, spliced pole and axis body fixed connection, a plurality of linking arms use the spliced pole as central evenly distributed, the one end of linking arm can be dismantled with the lateral wall of spliced pole and be connected, the other end and the wheel subassembly of linking arm are connected. The axis body drives the connecting column to rotate when rotating, and the connecting column drives the wheel assembly to rotate through the connecting arm, so that the wheel assembly can repeatedly roll along the corresponding circular ring-shaped marking line to perform an experiment, the reduction of the rotational inertia of the rack during rotation is facilitated, and meanwhile, the material saving cost is facilitated.

Preferably, a reinforcing pipe is arranged between every two adjacent connecting arms, one end of each reinforcing pipe is detachably connected with one connecting arm, and the other end of each reinforcing pipe is detachably connected with the other connecting arm. The reinforcing pipe is favorable for improving the strength of the frame so as to ensure the normal rotation of the frame.

Preferably, the wheel subassembly includes wheel carrier and wheel body, one side of wheel carrier be equipped with linking arm assorted sleeve pipe, the wheel carrier passes through sleeve pipe and linking arm sliding connection, the wheel body is located the corresponding opposite side of wheel carrier, the wheel body rotates with the wheel carrier to be connected, the top of axis body is equipped with the disc, the center and the axis body of disc rotate to be connected, the frame is located between disc and the chassis, the edge of disc is equipped with a plurality of and the bar hole of sleeve pipe one-to-one correspondence, be equipped with the locking seat on the sleeve pipe, locking seat and sleeve pipe fixed connection, be equipped with on the locking seat with bar hole assorted locking piece, the locking piece can be dismantled with the locking seat and be connected. The wheel frame on the connecting arm drives the wheel body to rotate, so that the wheel body is repeatedly rolled along the annular marking line, the wheel frame is provided with the air cylinder, and the air cylinder applies different pressures to the wheel body so as to test the characteristics of the marking line, such as wear resistance, durability and the like; according to the size of the different diameters of ring shape marking, the tester loosens earlier the locking piece and guarantees that locking piece and locking seat do not separate, then the rotating disc for the locking piece is under the guide effect in bar hole, and the locking piece passes through the locking seat and drives the sleeve pipe and produce the slip for the linking arm, with the position of adjusting the wheel body apart from the frame center, is favorable to guaranteeing that the displacement volume that a plurality of wheel body was adjusted is unanimous simultaneously, then locks the locking piece again and fixes the wheel body.

Preferably, the locking piece includes a bolt, a thread groove corresponding to the strip-shaped hole is formed in the locking seat, a bolt is arranged in the thread groove, one end of the bolt is located on one side of the disc and is in threaded connection with the thread groove, the other end of the bolt penetrates through the strip-shaped hole and is located on the other side corresponding to the disc, a cap body is arranged on one end of the bolt penetrating through the strip-shaped hole, and the diameter of the cap body is larger than the width of the strip-shaped hole. According to the size of the different diameters of ring shape marking, the tester loosens the bolt earlier and guarantees that bolt and thread groove do not separate, then the rotating disc for the bolt is under the guide effect in bar hole, and the bolt passes through the locking seat and drives the sleeve pipe and produce the slip for the linking arm, with the position of adjusting the wheel body apart from the frame center, is favorable to guaranteeing that the displacement volume that a plurality of wheel body was adjusted is unanimous simultaneously, then screws up the bolt again and fixes the wheel body.

Preferably, the linking arm includes that the rocking arm pipe is one, rocking arm pipe two and rocking arm pipe three, rocking arm pipe one and rocking arm pipe two distribute about and be parallel to each other, the one end of rocking arm pipe one can be dismantled with the lateral wall of spliced pole and be connected, the other end of rocking arm pipe one just forms an organic whole with the one end fixed connection of rocking arm pipe three, the one end of rocking arm pipe two just constitutes an organic whole with the other end fixed connection of rocking arm pipe three, rocking arm pipe three is the slope and arranges, the other end and the sleeve pipe phase-match of rocking arm pipe two, the wheel carrier passes through sleeve pipe and two sliding connection of rocking arm pipe. The third rotating arm pipe is fixedly connected with and integrated with the first rotating arm pipe and the second rotating arm pipe respectively, so that the strength of the connecting arm is improved, the strength of the rack is further improved, and the cost is saved; when a tester rotates the disc under the loosening state of the bolt, the bolt drives the sleeve to slide relative to the connecting arm through the locking seat so as to adjust the position of the wheel body away from the center of the rack.

As preferred, the shape in bar hole is the rectangle, the one end in bar hole is close to the axis body, the axis body is kept away from to the other end in bar hole, and a plurality of bar hole uses the axis body as the center and along the equidirectional slope evenly distributed on the disc. The shape of the strip-shaped hole is limited to be rectangular or arc; design like this makes the bolt under the guide effect in bar hole, drives the central siphon and can produce radial slide for the second of rotor tube, does benefit to the diameter size according to different ring shape markings, can adjust the position of a plurality of wheel body simultaneously, and it is convenient to adjust, does benefit to the displacement volume of guaranteeing that a plurality of wheel body is adjusted simultaneously unanimously.

Preferably, a first bearing is arranged at the center of the disc, and the disc is rotatably connected with the shaft body through the first bearing. The friction force between the disc and the shaft body during rotation is reduced, and the rotation operation of a tester is facilitated.

Preferably, the disc includes inner ring and outer loop, the inside wall of inner ring is passed through bearing one and is connected with the axis body rotation, the lateral wall of inner ring is equipped with a plurality of evenly distributed's connecting rod, the structure of connecting rod is the same with the structure of linking arm, the inner ring passes through the inside wall fixed connection of connecting rod and outer loop, a plurality of bar hole evenly distributed is on the outer loop. The design is favorable to reducing the inertia of disc like this, is convenient for improve the precision of wheel body position control.

Preferably, the axis body includes axle bed, main shaft and sprocket one, the axle bed can be dismantled with the chassis and be connected, axle bed and chassis mutually perpendicular, be equipped with the through-hole in the axle bed, the cover is equipped with a plurality of bearing two on the main shaft, the main shaft passes through the inside wall of bearing two and through-hole and matches and is connected with the axle bed rotation, the both ends of main shaft all are located outside the through-hole, the one end and the spliced pole fixed connection of main shaft just are connected with the center rotation of disc, the other end of main shaft runs through the chassis and can dismantle with sprocket one and be connected, can dismantle on the output shaft and be connected with sprocket two, the pot head of driving chain is located sprocket one, the pot head of driving chain is located sprocket two, the other pot head of driving chain is located sprocket two, the main shaft is connected with the output shaft transmission under the transmission of driving chain. The main shaft is arranged on the shaft seat through the second bearing, so that on one hand, the friction force between the main shaft and the shaft seat during rotation is reduced, on the other hand, the main shaft is protected from being broken easily, and the service life of the main shaft is prolonged.

The invention has the beneficial effects that: : the position does not need to be adjusted during the experiment; the operation is simple and convenient; the rotary inertia of the frame during rotation is reduced, and the material cost is saved; the strength of the frame is improved, so that the normal rotation of the frame is ensured; according to the diameters of different annular marking lines, the positions of the wheel bodies from the center of the rack can be adjusted, and meanwhile, the adjustment displacement of the plurality of wheel bodies is ensured to be consistent; the friction force between the disc and the shaft body during rotation is reduced, and the rotation operation of a tester is facilitated; the rotational inertia of the disc is reduced, and the accuracy of adjusting the position of the wheel body is improved; the main shaft is arranged on the shaft seat through the second bearing, so that on one hand, the friction force between the main shaft and the shaft seat during rotation is reduced, on the other hand, the main shaft is protected from being broken easily, and the service life of the main shaft is prolonged.

Drawings

FIGS. 1 and 2 are schematic structural views of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

FIG. 4 is a schematic structural view of the wheel body when locked;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

FIG. 6 is an enlarged view of the structure at C in FIG. 5;

fig. 7 is an enlarged view of the structure at D in fig. 5.

In the figure: 1. the automobile wheel comprises a base frame, 2 parts of a rack, 3 parts of a motor, 4 parts of a speed reducer, 5 parts of a shaft body, 6 parts of a belt, 7 parts of a transmission chain, 8 parts of a wheel assembly, 9 parts of a connecting arm, 10 parts of a connecting column, 11 parts of a reinforcing pipe, 12 parts of a rotating arm pipe I, 13 parts of a rotating arm pipe II, 14 parts of a rotating arm pipe III, 15 parts of a wheel frame, 16 parts of a wheel body, 17 parts of a sleeve, 18 parts of a disc, 19 parts of a strip-shaped hole, 20 parts of a locking seat, 21 parts of a thread groove, 22 parts of a bolt, 23 parts of a cap body, 24 parts of a bearing I, 25 parts of an inner ring, 26 parts of an outer ring, 27 parts of a connecting rod, 28 parts of a shaft seat, 29 parts of a main shaft, 30 parts of a chain wheel I, 31 parts of a through hole, 32 parts of a bearing II and 33 parts of a chain wheel II.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

In the embodiment shown in fig. 1, 2 and 3, a center distance adjustable wear meter rotating frame assembly comprises a chassis 1 and a frame 2, a motor 3, a speed reducer 4 and a shaft body 5 are arranged on the chassis 1, the motor 3 and the speed reducer 4 are both detachably connected with the chassis 1, an input shaft is arranged at the top of the speed reducer 4, an output shaft is arranged at the bottom of the speed reducer 4, a belt 6 is arranged at the output end of the motor 3, the motor 3 is in transmission connection with the input shaft through the belt 6, a transmission chain 7 is arranged on the output shaft, the shaft body 5 is in rotation connection with the chassis 1, the frame 2 is circular in shape, the top of the shaft body 5 is connected with the center of the frame 2, the bottom of the shaft body 5 is in transmission connection with the output shaft through the transmission chain 7, and the edge of the frame 2 is connected with a plurality of uniformly distributed wheel assemblies 8.

As shown in fig. 1 and 3, the frame 2 includes a plurality of linking arms 9, the top of the shaft body 5 is provided with a connecting column 10, the center of the connecting column 10 is on the central axis of the shaft body 5, the connecting column 10 is fixedly connected with the shaft body 5, the linking arms 9 are uniformly distributed by taking the connecting column 10 as the center, one end of the linking arm 9 is detachably connected with the side wall of the connecting column 10, and the other end of the linking arm 9 is connected with the wheel assembly 8.

As shown in fig. 1 and 3, a reinforcing pipe 11 is arranged between every two adjacent connecting arms 9, one end of each reinforcing pipe 11 is detachably connected with one of the connecting arms 9, and the other end of each reinforcing pipe 11 is detachably connected with the other connecting arm 9.

As shown in fig. 1, 2, 3, 4, 5 and 6, the wheel assembly 8 includes a wheel frame 15 and a wheel body 16, a sleeve 17 matched with the connecting arm 9 is disposed on one side of the wheel frame 15, the wheel frame 15 is slidably connected with the connecting arm 9 through the sleeve 17, the wheel body 16 is disposed on the other side corresponding to the wheel frame 15, the wheel body 16 is rotatably connected with the wheel frame 15, as shown in fig. 4, 5 and 6, a disc 18 is disposed on the top of the shaft body 5, the center of the disc 18 is rotatably connected with the shaft body 5, the frame 2 is disposed between the disc 18 and the underframe 1, a plurality of strip-shaped holes 19 corresponding to the sleeve 17 are disposed on the edge of the disc 18, a locking seat 20 is disposed on the sleeve 17, the locking seat 20 is fixedly connected with the sleeve 17, a locking member matched with the strip-shaped hole 19 is disposed on the locking seat 20, and the locking member is detachably connected with the locking seat 20.

As shown in fig. 4, 5 and 6, the locking member includes a bolt, a thread groove 21 corresponding to the strip-shaped hole 19 is formed in the locking seat 20, a bolt 22 is disposed in the thread groove 21, one end of the bolt 22 is disposed on one side of the disc 18 and is in threaded connection with the thread groove 21, the other end of the bolt 22 penetrates through the strip-shaped hole 19 and is disposed on the other side of the disc 18, a cap body 23 is disposed at one end of the bolt 22 penetrating through the strip-shaped hole 19, and the diameter of the cap body 23 is greater than the width of the strip-shaped hole 19.

As shown in fig. 1, 2, 3, 4 and 5, the connecting arm 9 includes a first rotating arm pipe 12, a second rotating arm pipe 13 and a third rotating arm pipe 14, the first rotating arm pipe 12 and the second rotating arm pipe 13 are distributed vertically and are parallel to each other, one end of the first rotating arm pipe 12 is detachably connected with the side wall of the connecting column 10, the other end of the first rotating arm pipe 12 is fixedly connected with and integrated with one end of the third rotating arm pipe 14, one end of the second rotating arm pipe 13 is fixedly connected with and integrated with the other end of the third rotating arm pipe 14, the third rotating arm pipe 14 is arranged obliquely, the other end of the second rotating arm pipe 13 is matched with a sleeve 17, and the wheel carrier 15 is slidably connected with the second rotating arm pipe 13 through the sleeve 17.

As shown in fig. 4, the shape of bar hole 19 is the rectangle, and the one end of bar hole 19 is close to axis body 5, and the axis body 5 is kept away from to the other end of bar hole 19, and a plurality of bar hole 19 uses axis body 5 as the center and along equidirectional slope evenly distributed on disc 18.

As shown in fig. 5 and 7, a first bearing 24 is arranged at the center of the disc 18, and the disc 18 is rotatably connected with the shaft body 5 through the first bearing 24.

As shown in fig. 4, 5 and 7, the disc 18 includes an inner ring 25 and an outer ring 26, the inner side wall of the inner ring 25 is rotatably connected with the shaft body 5 through a bearing 24, the outer side wall of the inner ring 25 is provided with a plurality of uniformly distributed connecting rods 27, the structure of each connecting rod 27 is the same as that of the connecting arm 9, the inner ring 25 is fixedly connected with the inner side wall of the outer ring 26 through the connecting rods 27, and a plurality of strip-shaped holes 19 are uniformly distributed on the outer ring 26.

As shown in fig. 3, 5 and 7, the shaft body 5 includes a shaft seat 28, a main shaft 29 and a first sprocket 30, the shaft seat 28 is detachably connected to the chassis 1, the shaft seat 28 is perpendicular to the chassis 1, a through hole 31 is formed in the shaft seat 28, a plurality of second bearings 32 are sleeved on the main shaft 29, the main shaft 29 is rotatably connected to the shaft seat 28 through matching of the second bearings 32 and the inner side wall of the through hole 31, two ends of the main shaft 29 are located outside the through hole 31, one end of the main shaft 29 is fixedly connected to the connecting column 10 and rotatably connected to the center of the disc 18, the other end of the main shaft 29 penetrates through the chassis 1 and is detachably connected to the first sprocket 30, a second sprocket 33 is detachably connected to the output shaft, one end of the driving chain 7 is sleeved on the first sprocket 30, the other end of the driving chain 7 is sleeved on the second sprocket 33, and the main shaft 29 is in transmission connection with the output shaft under the transmission of the driving chain 7.

Before the experiment, according to the different diameter sizes of ring shape marking, the tester loosens bolt 22 earlier and guarantees that bolt 22 and thread groove 21 do not separate, then rotatory disc 18, make bolt 22 under bar hole 19's guide effect, bolt 22 drives sleeve pipe 17 through locking seat 20 and produces for two 13 of swivel arm pipe and slide, can realize adjusting the position at a plurality of wheel body 16 distance frame 1 center simultaneously, be favorable to guaranteeing simultaneously that the displacement volume that a plurality of wheel body 16 adjusted is unanimous, it is corresponding with the marking to guarantee a plurality of wheel body 16 homoenergetic, it is convenient to adjust, it fixes wheel body 16 to tighten bolt 22 again at last.

During the test, the motor 3 drives the speed reducer 4 to operate through the belt 6, the speed reducer 4 drives the main shaft 29 to rotate through the transmission chain 7, and the main shaft 29 drives the rack 1 to rotate, so that the rack 1 can drive the wheel bodies 16 to repeatedly roll along the corresponding circular mark lines through the wheel carrier to perform the test, and the abrasion condition of the mark lines when the automobile runs at a high speed on a curve is simulated.