Automobile tire performance detection device

Abstract

The invention relates to the technical field of tire detection, in particular to an automobile tire performance detection device. According to the specific technical scheme, the automobile tire performance detection device comprises a tire fixing mechanism, the tire fixing mechanism is arranged on a mounting frame, a conveying mechanism is arranged below the tire fixing mechanism, a test piece is detachably arranged on the conveying mechanism, a fixing column is arranged at the top of the mounting frame, and the test piece is detachably arranged on the fixing column. The fixing column is rotationally connected to the support and driven by a first motor, and the fixing column corresponds to the center of the top of the tire. The problems that in the prior art, steering of the tire cannot be controlled, and performance detection of the tire during rotation cannot be achieved are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of tire detection, and particularly to a device for detecting the performance of automobile tires. Background Art

[0002] As a key component in automobile driving, the performance of tires is directly related to driving safety, vehicle controllability, fuel efficiency, and riding comfort. Therefore, the necessity of tire performance detection is self-evident. During the manufacturing process of tires, it is necessary to detect their performance to ensure that they meet the usage requirements, such as the wear resistance of tires.

[0003] In the prior art, generally, test plates with different or the same roughness are used to rub against the tires for testing. The test plates are arranged in a sliding manner, and the reciprocating movement of the test plates is used to test the wear resistance of the tires. There are also test plates arranged in a flexible manner, such as a conveyor belt, and the performance test is achieved by driving its rotation. No matter which arrangement method, basically the tires are in a fixed state, and it is impossible to control the steering of the tires and test their performance during the rotation process. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a device for detecting the performance of automobile tires, which solves the problems of uncontrollable tire steering and performance detection during tire rotation in the prior art.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: The present invention discloses a device for detecting the performance of automobile tires, including a tire fixing mechanism. The tire fixing mechanism is arranged on a mounting frame. A conveying mechanism is arranged below the tire fixing mechanism. A test piece is detachably arranged on the conveying mechanism. A fixing column is arranged at the top of the mounting frame. The fixing column is rotatably connected to a bracket and is driven by a first motor. The fixing column corresponds to the center of the top of the tire.

[0006] Preferably, the bracket is in a "C" shape, and its top plate moves up and down along the side plates. The conveying mechanism is arranged above the bottom plate. A strip-shaped groove is vertically opened on the side plate. A first screw rod is vertically arranged in the strip-shaped groove. One end of the first screw rod extends out of the top of the side plate and is connected to a second motor. One end of the top plate is provided with a nut adapted to the first screw rod. The top plate is driven to move up and down by the rotation of the first screw rod.

[0007] Preferably, the first screw rod is arranged at the midline of the side plate. Guide grooves are respectively arranged on both sides of the first screw rod. Guide rods are vertically arranged in the guide grooves. Guide blocks adapted to the guide rods are respectively arranged on both sides of the nut on the side wall of the top plate.

[0008] Preferably, the mounting bracket is in an inverted U shape, the fixing column is arranged on its horizontal plate, the tire fixing mechanism is arranged on the two vertical plates, and a tire locking mechanism is arranged between the two vertical plates on one side of the tire to stop the tire from rotating.

[0009] Preferably, the tire fixing mechanism includes two corresponding mounting sleeves, fixing rods are correspondingly arranged on the mounting sleeves, one end of the fixing rod is threadedly connected to the mounting sleeve, and the other end is connected to the other mounting sleeve through a spline; a fixing plate is arranged on the side of the mounting sleeve opposite to the side connected to the fixing rod, and the fixing plate is fixed to the vertical plate; fixing holes are arranged on the fixing plate, and connecting cylinders are respectively arranged at the centers of the other sides of the two mounting sleeves; the connecting cylinder passes through the fixing hole and is connected to a third motor, or, the connecting cylinder on one of the mounting sleeves passes through the fixing hole and is connected to the third motor, and the connecting cylinder on the other mounting sleeve is fixed to the fixing hole through a first bearing.

[0010] Preferably, a second bearing is sleeved outside the mounting sleeve, the inner ring of the mounting sleeve and the second bearing are connected through the cooperation of a strip-shaped groove and a strip-shaped block, and a fixing ring is sleeved and fixed on the outer ring of the second bearing.

[0011] Preferably, telescopic sleeves are respectively arranged on the opposite sides of the mounting sleeves. The telescopic sleeve includes a fixing cylinder with one end fixed to the end face of the outer ring of the second bearing or the end face of the fixing ring. An end cover is slidably connected to the fixing cylinder. The end cover can move axially and rotate along the fixing cylinder. A through hole for the fixing rod to extend out is arranged on the end cover, and the fixing rod arranged on the mounting sleeve extends out from the through hole on the end cover. A spring is sleeved on the fixing rod located in the telescopic sleeve.

[0012] Preferably, the tire locking mechanism includes a locking groove with an opening on one side. Second screws parallel to each other are arranged along the length direction in the locking groove. The two second screws are respectively driven by a fourth motor. Locking plates adapted to the second screws are respectively arranged on the second screws. The locking plates are in an L shape and are symmetrically arranged. The sidewall of the tire is located between the two locking plates.

[0013] Preferably, screw holes adapted to the second screws and guide holes for the other second screw to pass through are respectively arranged at the bottoms of the locking plates; positioning plates are respectively arranged on both sides of the locking plates, and the positioning plates and the top surface of the locking groove are matched through a sliding groove and a sliding block.

[0014] Preferably, a fixing sleeve is sleeved and fixed on the fixing column. A rotating strip is arranged on the side wall of the fixing sleeve. An arc-shaped groove concentric with the fixing column is arranged on the top plate. The rotating strip extends into the arc-shaped groove. The arc-shaped groove is made of a transparent material, and angle lines are arranged on the outside of the arc-shaped groove.

[0015] The present invention has the following beneficial effects: The present invention tests the wear resistance of tires and simulates complex road conditions by arranging a detachable test piece on the conveying mechanism and changing the roughness of the test piece. The tire is fixed on the mounting frame by a tire fixing mechanism, and the rotation of the tire is simulated by driving the mounting frame to rotate. The tire fixing mechanism fixes the tire mainly by two mounting sleeves and a fixing rod arranged between the mounting sleeves. The fixing rod passes through the tire, and a telescopic sleeve is arranged on the corresponding end face of the mounting sleeve to achieve tight fixation of the tire. At the same time, the rotation of the tire is also achieved by driving the mounting sleeve to rotate. When the tire needs to be fixed, the tire is fixed by a tire locking mechanism. The tire locking mechanism fixes the tire mainly by locking plates driven by two second screws respectively, so as to perform fixed-point detection on the tire. Through the detection device disclosed by the present invention, different states of the tire can be simulated, so as to perform multi-faceted detection on the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Middle AA view; Figure 3 for Figure 1 Middle BB view; Figure 4 is a cross-sectional view of a tire fixing mechanism; Figure 5 The top view of the installation sleeve after it is connected to the fixing plate (or Figure 4 right view of the left part of the figure); Figure 6 Schematic diagram of the end cap ( Figure 4 right side view of the left part of the center); Figure 7 is a schematic diagram of a tire locking mechanism; Figure 8 for Figure 7 Middle CC view; In the figure: 1-conveying mechanism, 2-test piece, 3-fixed column, 4-first motor, 5-tire, 6-top plate, 7-side plate, 8-bottom plate, 9-first screw, 10-second motor, 11-nut, 12-guide rod, 13-guide block, 14-cross plate, 15-vertical plate, 16-mounting sleeve, 17-fixed rod, 18-fixed plate, 19-connecting tube, 20-second bearing, 21-strip block, 22-fixed ring, 23-fixed tube, 24-end cover, 25-through hole, 26-spring, 27-locking groove, 28-second screw, 29-fourth motor, 30-locking plate, 31-positioning plate, 32-slider, 33-rotating bar, 34-arc groove, 35-fixed sleeve, 36-slide groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0019] refer to Figure 1-Figure 8 The present invention discloses a device for detecting the performance of automobile tires, including a tire fixing mechanism, wherein the tire fixing mechanism is arranged on a mounting frame, and a conveying mechanism 1 is arranged below the tire fixing mechanism, and a test piece 2 is detachably arranged on the conveying mechanism 1. The test piece 2 may be rectangular and laid sequentially on a conveyor belt on the conveying mechanism, and the test piece may have protrusions or ridges of different roughness and / or shapes, so as to simulate different tire test environments. The test piece 2 may be made of rubber material so as to be fixed on the conveying mechanism. The conveying mechanism is a prior art and will not be described in detail. A layer of adhesive may be fixed on the surface of the conveyor belt of the conveying mechanism so as to glue and fix the test piece 2. At the same time, test pieces of different roughness may be replaced as needed. In addition, the length and number of the test pieces may be set as needed, and at the same time, test pieces of different roughness may be set on the conveying mechanism to simulate a more complex test environment.

[0020] Furthermore, a fixing column 3 is provided on the top of the mounting frame, the fixing column 3 is rotatably connected to the bracket and driven by the first motor 4, and the fixing column 3 corresponds to the top center of the tire 5. It should be noted that a hole for the fixing column to pass through is provided on the top plate 6 of the bracket, and the fixing column and the hole are fixed by a bearing. At the same time, one end of the fixing column passing through the top plate 6 is driven by the first motor, and the first motor and the fixing column can be belt-driven or gear-driven, and finally the steering and steering angle of the tire are controlled by the first motor.

[0021] Furthermore, the bracket is in a "C" shape to ensure the stability between the tire and the tire fixing mechanism and the bracket. Its top plate 6 moves up and down along the side plates 7, and the conveying mechanism 1 is arranged above the bottom plate 8. The movable setting of the top plate can not only adjust the acting force between the tire and the conveying mechanism, but also adapt to tires of different sizes. Specifically: a strip-shaped groove is vertically formed in the side plate 7, a first screw rod 9 is vertically arranged in the strip-shaped groove, one end of the first screw rod is fixed to the strip-shaped groove through a bearing, and the other end extends out of the top of the side plate. The strip-shaped groove is arranged at the midline of the side plate, so that the first screw rod 9 is also arranged at the midline of the side plate 7. One end of the first screw rod 9 extends out of the top of the side plate 7 and is connected with a second motor 10. One end of the top plate 6 is provided with a nut 11 adapted to the first screw rod 9. The first screw rod 9 is driven to rotate by the second motor, thereby driving the top plate 6 to move up and down to adjust the distance between the tire and the conveying mechanism.

[0022] Furthermore, to increase the stability of the top plate during operation, guide grooves are respectively arranged on both sides of the first screw rod 9, and guide rods 12 are vertically arranged in the guide grooves. Guide blocks 13 adapted to the guide rods 12 are respectively arranged on both sides of the nut 11 on the side wall of the top plate 6. It should be noted that: the guide rods are smooth rods, and the guide blocks are in clearance fit with the guide rods. At the same time, the guide rods are parallel to the first screw rod. When the first screw rod drives the top plate to move, the guide blocks also slide along the guide rods. The arranged strip-shaped groove and guide groove can penetrate the side plate, or can be a strip-shaped groove with an opening facing the tire fixing frame, and the specific setting can be selected according to needs.

[0023] Furthermore, the mounting frame is in an "n" shape, the fixed column 3 is fixedly arranged on its cross plate 14, the tire fixing mechanism is arranged on the two vertical plates 15, and a tire locking mechanism is arranged between the two vertical plates 15 and on one side of the tire 5 to stop the tire 5 from rotating. The fixed column is arranged at the center of the cross plate, corresponding to the top of the tire fixed on the tire fixing frame, to ensure that the center of the tire is consistent with the center of the fixed column and avoid the occurrence of tilting and other situations due to different centers of gravity after the tire is fixed.

[0024] Furthermore, the tire fixing mechanism includes two corresponding mounting sleeves 16, and the mounting sleeves 16 are correspondingly provided with fixing rods 17, one end of the fixing rod 17 is threadedly connected to the mounting sleeve 16, and the other end is splinedly connected to the other mounting sleeve 16. It should be noted that: in order to facilitate the disassembly and installation of the detachable connection between the fixing rod and the mounting sleeve, a threaded hole is provided on one mounting sleeve, which is threadedly connected to the fixing rod, and a keyway is provided on the other mounting sleeve, and a keyway is also provided at one end of the corresponding fixing rod, so that the fixing rod and the mounting sleeve are splined. During installation, after one end of the fixing rod is fixed on the mounting sleeve, the other end can be directly inserted into the other mounting sleeve. The number of fixing rods is determined according to the mounting holes on the wheel hub. When facing tires with different numbers of holes, it is only necessary to replace the mounting sleeves with the corresponding number of holes.

[0025] Furthermore, in order to fix the mounting sleeve on the vertical plate, a fixing plate 18 is provided on the other side of the mounting sleeve 16 opposite to the connection side of the fixing rod 17, and the fixing plate 18 and the vertical plate 15 can be fixed by bolts; a fixing hole is provided on the fixing plate 18, and a connecting tube 19 is provided at the center of the other side of the two mounting sleeves 16; the connecting tube 19 passes through the fixing hole and is connected to the third motor, or, the connecting tube 19 on one of the mounting sleeves 16 passes through the fixing hole to connect the third motor, and the connecting tube 19 on the other mounting sleeve 16 is fixed to the fixing hole by a first bearing. It should be noted that the fixing plate and the mounting sleeve are not fixed, but are in a contact state. The fixing between the fixing plate and the mounting sleeve is achieved by connecting the connecting tube through the fixing plate and connecting to the third motor, that is, the third motor is installed on the fixing plate, and its output end is connected to the connecting tube. The connecting tube and the output shaft of the third motor are connected by splines, and the output shaft is inserted into the connecting tube and matched to realize the detachability of the motor and the connecting tube. Of course, it can also be fixedly connected as needed. The third motor can be arranged on the connecting cylinder on any one of the mounting sleeves, and the other connecting cylinder is fixed to the fixing hole through a bearing to achieve the fixation of the fixing plate and the mounting sleeve.

[0026] Furthermore, in order to test the relevant performance of the tire during rotation, the outer sleeve of the mounting sleeve 16 is provided with a second bearing 20, and the inner ring of the mounting sleeve 16 and the second bearing 20 are connected by the cooperation of the strip groove and the strip block 21, that is, the second bearing and the mounting sleeve are not fixed, and the mounting sleeve can move axially in the second bearing but cannot rotate. The outer ring of the second bearing 20 is fixed with a fixing ring 22 to increase the thickness of the outer ring of the second bearing, so as to facilitate the fixing of the telescopic sleeve.

[0027] In order to hold the tire tightly, a telescopic sleeve is provided on the corresponding side of the mounting sleeve 16, and the two telescopic sleeves are respectively pressed against the two ends of the tire, so as to prevent the tire from displacement or shaking on the fixing rod. Specifically: the telescopic sleeve includes a fixing cylinder 23 with one end fixed on the end face of the outer ring of the second bearing 20 or the end face of the fixing ring 22, or fixed between the second bearing and the end face of the fixing ring. The fixing cylinder 23 is slidably connected with an end cover 24, that is, one end of the fixing cylinder extends into the end cover, so that the end cover can move axially along the fixing cylinder, thereby changing the overall length of the fixing cylinder and the end cover, so as to adapt to the clamping and fixing of tires of different gears. The end cover 24 can move and rotate axially along the fixing cylinder 23, and the end cover 24 is provided with a through hole 25 for the fixing rod 17 to extend out. The fixing rod 17 arranged on the mounting sleeve 16 extends out from the through hole 25 on the end cover 24, and a spring 26 is sleeved on the fixing rod 17 located in the telescopic sleeve. It should be noted that: the two ends of the spring are against the mounting sleeve and the end cover. In the initial state, the spring is in a compressed state. At this time, the end cover and the fixed cylinder are in the maximum length state. The end covers on the two mounting sleeves are pressed against the tire. Rubber pads can also be provided on the end covers as needed to avoid scratching the tire. As for the connection between the end cover and the fixed cylinder, it is the existing technology. For example, a retaining ring is provided on the outer wall of the connecting end of the fixed cylinder and the end cover, and an annular groove is provided on the inner wall of the end cover. The retaining ring is located in the annular groove, so that the end cover can reciprocate along the annular groove toward the fixed cylinder. At the same time, it does not affect the rotation of the end cover relative to the fixed cylinder, so that when the mounting sleeve, the fixing rod and the tire rotate, the end cover also rotates accordingly, which does not affect the movement of the tire, and realizes the detection of the relevant performance of the tire during the movement. During installation, the fixing ring or the second bearing passes through the vertical plate, so that the fixing plate is against the outer side of the vertical plate, and then the fixing plate is fixed to the vertical plate by bolts.

[0028] Furthermore, the through hole can be fan-shaped with a certain curvature, and the arc length of each through hole is different. When the number of fixing rods is changed by replacing the mounting sleeve, the fixing rods can all pass through the through holes. Generally, the number of mounting holes of the wheel hub on the tire is 4 or 5. Therefore, in this case, the through holes only need to be set to ensure that when there are 4 or 5 fixing rods, all of them can pass through the through holes.

[0029] Furthermore, in order to detect the performance of the tire in a stationary state, it is necessary to fix it. Although the third motor can lock the mounting sleeve connected to it to prevent it from rotating, it will cause great damage to the motor. Therefore, a tire locking mechanism is set between the vertical plates to fix the tire. The tire locking mechanism can be set in multiples as needed, such as Figure 2As shown, two corresponding ones are arranged, which are located on both sides of the tire fixing mechanism. The tire locking mechanism includes a locking groove 27 with an opening on one side, and the opening side of the locking groove is arranged toward the tire. The locking groove 27 is provided with second screws 28 parallel to each other along its length direction. The two second screws 28 are driven by a fourth motor 29 respectively. The second screws 28 are respectively provided with locking plates 30 adapted to the second screws 28. The locking plates 30 are "L" shaped and symmetrically arranged. The sidewall of the tire 5 is located between the two locking plates 30. It should be noted that one end of the second screw is rotatably connected to one end of the locking groove through a bearing, and the other end extends out of the other end of the locking groove and is connected to the fourth motor. The two fourth motors can be arranged at one end of the locking groove, or at both ends of the locking groove. The locking plates are driven by the fourth motor to move toward each other to achieve the clamping of the edge of the tire, and move away from each other to achieve the loosening of the tire. When fixed, the vertical plates of the locking plate abut against the two ends of the tire (the side of the tire tread), thereby clamping the tire.

[0030] Furthermore, in order to ensure the stability of the locking plate during operation, the bottom of the locking plate 30 is respectively provided with a screw hole adapted to the second screw rod 28 and a guide hole for another second screw rod 28 to pass through, and a gap is set between the guide hole and the other second screw rod; positioning plates 31 are respectively provided on both sides of the locking plate 30, and the positioning plates 31 and the top surface of the locking groove 27 are matched through a slide groove 36 and a slider 32. The slide groove and the slider are adapted, and the shape thereof can be T-shaped, and one end of the slide groove passes through the top surface of the locking groove, so as to facilitate sliding the slider into the slide groove.

[0031] Furthermore, in order to determine the angle at which the fixed column drives the mounting frame to rotate, that is, the rotation angle of the tire, a fixed sleeve 35 is fixedly mounted on the fixed column 3, a rotation bar 33 is transversely arranged on the side wall of the fixed sleeve 35, and an arc groove 34 coaxial with the fixed column 3 is arranged on the top plate 6, and the rotation bar 33 extends into the arc groove 34, and the arc groove 34 is made of a transparent material, and an angle line is arranged on the outside of the arc groove 34. It should be noted that the rotation bar can be arranged on the fixed column above or below the top plate, and similarly, the arc groove is arranged at the top or bottom of the top plate along with the rotation bar. The rotation bar and the fixed sleeve can be threadedly connected. The position and number of the rotation bar and the arc groove can be set according to the needs or the arrangement of each structure on the mounting frame.

[0032] When the present invention is used, the wear resistance of the tire is tested by changing the roughness of the test piece on the conveying mechanism and simulating complex road conditions. The rotation of the tire is simulated by driving the mounting frame to rotate, and the tire is fixed by the tire locking mechanism, so as to perform fixed-point detection on the tire. In the case of the detection device disclosed in the present invention, the state of the tire is changed as needed, so as to perform multi-faceted detection on the tire.

[0033] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A vehicle tire performance detection device, comprising a tire fixing mechanism, characterized in that: The tire fixing mechanism is arranged on the mounting frame. A conveying mechanism (1) is arranged below the tire fixing mechanism. A test piece (2) is detachably arranged on the conveying mechanism (1). A fixing column (3) is arranged on the top of the mounting frame. The fixing column (3) is rotatably connected to the bracket and driven by a first motor (4). The fixing column (3) corresponds to the center of the top of the tire (5).

2. The device for detecting the performance of automobile tires according to claim 1, characterized in that: The bracket is in a "C" shape, and its top plate (6) moves up and down along the side plates (7). The conveying mechanism (1) is arranged above the bottom plate (8). A strip-shaped groove is vertically formed in the side plate (7). A first screw rod (9) is vertically arranged in the strip-shaped groove. One end of the first screw rod (9) extends out of the top of the side plate (7) and is connected to a second motor (10). A nut (11) adapted to the first screw rod (9) is arranged at one end of the top plate (6). The top plate (6) is driven to move up and down by the rotation of the first screw rod (9).

3. The vehicle tire performance detection device according to claim 2, characterized in that: The first screw rod (9) is arranged at the midline of the side plate (7). Guide grooves are respectively arranged on both sides of the first screw rod (9). Guide rods (12) are vertically arranged in the guide grooves. Guide blocks (13) adapted to the guide rods (12) are respectively arranged on both sides of the side wall of the top plate (6) where the nut (11) is located.

4. The vehicle tire performance detection device according to claim 1, characterized in that: The mounting frame is in a "U" shape. The fixing column (3) is arranged on its cross plate (14). The tire fixing mechanism is arranged on the two vertical plates (15). A tire locking mechanism is arranged between the two vertical plates (15) on one side of the tire (5) to stop the rotation of the tire (5).

5. The device for detecting the performance of automobile tires according to claim 4, characterized in that: The tire fixing mechanism includes two corresponding mounting sleeves (16). Fixing rods (17) are correspondingly arranged on the mounting sleeves (16). One end of the fixing rod (17) is threadedly connected to the mounting sleeve (16), and the other end is connected to the other mounting sleeve (16) through a spline. A fixing plate (18) is arranged on the side of the mounting sleeve (16) opposite to the side connected to the fixing rod (17). The fixing plate (18) is fixed to the vertical plate (15). Fixing holes are arranged on the fixing plate (18). Connecting cylinders (19) are respectively arranged at the centers of the other sides of the two mounting sleeves (16). The connecting cylinder (19) passes through the fixing hole and is connected to a third motor, or the connecting cylinder (19) on one of the mounting sleeves (16) passes through the fixing hole and is connected to the third motor, and the connecting cylinder (19) on the other mounting sleeve (16) is fixed to the fixing hole through a first bearing.

6. The device for detecting the performance of automobile tires according to claim 5, characterized in that: A second bearing (20) is sleeved outside the mounting sleeve (16). The inner ring of the mounting sleeve (16) and the second bearing (20) are connected through the cooperation of a strip-shaped groove and a strip-shaped block (21). A fixing ring (22) is sleeved and fixed on the outer ring of the second bearing (20).

7. The device for detecting the performance of automobile tires according to claim 6, characterized in that: A telescopic sleeve is provided on one side corresponding to the mounting sleeve (16), the telescopic sleeve comprising a fixing sleeve (23) having one end fixed to an end face of an outer ring of a second bearing (20) or an end face of a fixing ring (22), an end cover (24) being slidably connected to the fixing sleeve (23), the end cover (24) being able to move and rotate axially along the fixing sleeve (23), a through hole (25) being provided on the end cover (24) for a fixing rod (17) to extend out, the fixing rod (17) provided on the mounting sleeve (16) extending out from the through hole (25) on the end cover (24), and a spring (26) being sleeved on the fixing rod (17) located in the telescopic sleeve.

8. The device for detecting the performance of automobile tires according to claim 4, characterized in that: The tire locking mechanism comprises a locking groove (27) with an opening on one side, wherein second screw rods (28) are arranged in parallel with each other along the length direction of the locking groove (27), wherein the two second screw rods (28) are respectively driven by a fourth motor (29), and the second screw rods (28) are respectively provided with locking plates (30) adapted to the second screw rods (28), wherein the locking plates (30) are "L"-shaped and symmetrically arranged, and the sidewall of the tire (5) is located between the two locking plates (30).

9. The device for detecting the performance of automobile tires according to claim 8, characterized in that: The bottom of the locking plate (30) is respectively provided with a screw hole adapted to the second screw rod (28) and a guide hole for another second screw rod (28) to pass through; positioning plates (31) are respectively provided on both sides of the locking plate (30), and the positioning plates (31) are matched with the top surface of the locking groove (27) via a sliding groove (36) and a sliding block (32).

10. The vehicle tire performance detection device according to claim 2, characterized in that: A fixing sleeve (35) is fixedly sleeved on the fixing column (3), a rotating bar (33) is arranged on the side wall of the fixing sleeve (35), an arc-shaped groove (34) coaxial with the fixing column (3) is arranged on the top plate (6), the rotating bar (33) extends into the arc-shaped groove (34), the arc-shaped groove (34) is made of a transparent material, and an angle line is arranged on the outer side of the arc-shaped groove (34).

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