Tire locking device for balancing machine

Abstract

The utility model relates to a tire locking device for a balancing machine. The technical problems that an existing spindle is complex in structure and operation, high in failure rate and the like are solved. Comprising an equipment case, a fixing support is arranged in the equipment case, a main shaft body is arranged at the upper end of the equipment case, one end of the main shaft body is arranged in the equipment case, the other end of the main shaft body extends to the outer side of the equipment case, and the end, located on the outer side of the equipment case, of the main shaft body is sleeved with a wheel part; an air spring assembly is arranged on the outer side of the main shaft body, and a ball clamping structure is arranged on the inner side of one end of the main shaft body and can enable the pneumatic sleeve to be clamped with or separated from the main shaft body so as to fix or take down the wheel part when the main shaft body moves axially. The main shaft has the advantages that the air spring assembly is adopted to control the operation of the main shaft main body, and under the matching of the ball clamping structure, the wheel part can be quickly disassembled, so that the operation convenience is improved, the working efficiency is accelerated, and the working intensity is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of balancing machine equipment, and particularly relates to a tire locking device for a balancing machine. Background Art

[0002] A tire balancing machine is a specialized device used to balance tires. During the tire manufacturing process or vehicle use, uneven weights may develop on the tires, causing vibration, trembling, or instability when the vehicle is driving at high speeds. The tire balancing machine rotates the tires and detects any imbalances, then adds appropriate weights to balance the tires, improving the vehicle's driving stability and ride comfort. Previous automotive balancing equipment was typically an old-fashioned balancing machine that used a quick-action nut for locking. This manual operation was not only inconvenient, laborious, and inefficient, but also prone to wear and tear. Furthermore, the balancing machine's spindle structure was complex, making operation cumbersome, resulting in a high failure rate and impacting the efficiency of tire balancing testing.

[0003] In order to address the shortcomings of the existing technology, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a pneumatic self-locking spindle and balancing machine [202410176749.5], which includes: a spindle structure, a fixed structure, a pneumatic structure, a tightening structure, and a device to be loaded; the spindle structure is connected to the pneumatic structure through the fixed structure; the device to be loaded is mounted on the spindle structure, the tightening structure is adjacent to the device to be loaded and is mounted on the side of the spindle structure away from the pneumatic structure, and the tightening structure fixes the device to be loaded; wherein, the spindle structure includes: a locking device, the locking device includes: a retractable device, the retractable device contacts the tightening structure, and the pneumatic structure controls the retractable device to complete the fixing and removal of the tightening structure and the device to be loaded.

[0004] The above solution solves the problem of locking the tire using a quick nut to a certain extent, but the solution still has many shortcomings, such as a complex spindle structure, cumbersome operation, and a high failure rate. Summary of the Invention

[0005] The purpose of the present invention is to solve the above-mentioned problems and provide a tire locking device for a balancing machine.

[0006] To achieve the above object, the utility model discloses the following technical scheme: a pair of tire locking device for balancing machine, including equipment machine case, the equipment machine case is equipped with fixed bolster, the equipment machine case upper end is equipped with the main shaft main body, the main shaft main body one end setting in equipment machine case, the other end extends to equipment machine case outside and is located equipment machine case outside the main shaft main body one end and is equipped with the wheel piece, the wheel piece is equipped with pneumatic sleeve far from equipment machine case one side, the fixed bolster one end is equipped with the pneumatic cylinder assembly that is connected with the main shaft main body one end, the main shaft main body is equipped with the gas spring assembly that is connected with the main shaft main body close to fixed bolster one end outside, and the main shaft main body far from pneumatic cylinder assembly one end inside is equipped with when the main shaft main body axial movement can make the pneumatic sleeve and the main shaft main body be clamped tightly or separate from each other to the ball clamping structure that the wheel piece is fixed or is taken off. The pneumatic cylinder assembly controls the main shaft main body, and the main shaft main body drives the ball clamping structure, and the ball clamping structure is used for controlling the pneumatic sleeve.

[0007] In the pair of tire locking device for balancing machine, the main shaft main body has the shaft core piece, the shaft core piece circumferential outside is equipped with the transmission sleeve, the transmission sleeve both ends are connected with the shaft core piece through the bearing respectively, the shaft core piece circumferential inside is equipped with the pull rod, and the pull rod far from the ball clamping structure one end extends axially to the gas spring assembly direction. The pull rod one end connects the ball clamping structure, and the other end connects the gas spring assembly.

[0008] In the pair of tire locking device for balancing machine, the gas spring assembly has the gas spring fixed plate that is arranged at the shaft core piece far from the ball clamping structure one end, the pull rod axially penetrates the gas spring fixed plate middle part, the gas spring fixed plate circumferential outside is equipped with a plurality of gas spring pieces, the gas spring piece far from the gas spring fixed plate one end is equipped with the pull rod fixed plate, and the pull rod one end is connected with the pull rod fixed plate through the sheath nut. The gas spring piece is connected with the pull rod through the pull rod fixed plate, and the operation of the pull rod is controlled by the cooperation of the gas spring piece and the pneumatic cylinder assembly.

[0009] In the pair of tire locking device for balancing machine, the ball clamping structure includes the pneumatic lead screw that one end is connected with the shaft core piece, the pneumatic lead screw both sides are equipped with the ball movable channel that extends axially respectively, the pneumatic sleeve is equipped outside the ball movable channel, the pneumatic lead screw one end inside is equipped with the pneumatic push head, the pneumatic push head far from the pull rod one end is equipped with the pneumatic sharp head, and the pneumatic sharp head close to the ball movable channel one end outside is equipped with the ball clamping assembly that is corresponding with the ball movable channel and is in contact with the inside of the pneumatic sleeve. The pull rod pushes the pneumatic push head, and the pneumatic push head pushes the pneumatic sharp head.

[0010] In the above-mentioned tire locking device for balancing machine, the ball clamping assembly comprises a plurality of balls movably arranged in the ball moving channel, the balls protrude from the end surface of the ball moving channel and contact the inner side of the pneumatic sleeve, the pneumatic tip is provided with a ball moving block on the outer side of the end close to the pneumatic push head, the ball moving block and the pneumatic tip are provided with a ball spring therebetween, the ball moving block and the pneumatic push head are provided with a ball moving gap which allows the outer side of the ball to not protrude from the end surface of the ball moving channel so as to separate the ball from the pneumatic sleeve, the inner side of the end of the pneumatic lead screw away from the shaft core is provided with a limit snap spring, and the limit snap spring and the pneumatic tip are provided with a limit spring therebetween. The pneumatic push head moves into the ball moving gap and contacts the pneumatic tip. The slight movement of the pneumatic tip loses the top force on the ball, and the ball can enter the pneumatic lead screw, which is conducive to the installation of the pneumatic sleeve.

[0011] In the above-mentioned tire locking device for balancing machine, the shaft core is provided with a wheel fixing part on the outer side of the end close to the pneumatic lead screw, the pneumatic sleeve is provided with a cone which is sleeved on the pneumatic lead screw on the end close to the wheel part, the wheel part is arranged between the wheel fixing part and the cone, and the end of the pneumatic sleeve contacts the cone.

[0012] In the above-mentioned tire locking device for balancing machine, the equipment cabinet is provided with a cross beam on the lateral side, the fixed support is arranged on the upper end of the cross beam, and the cross beam and the fixed support are provided with a hexagonal bolt therebetween.

[0013] In the above-mentioned tire locking device for balancing machine, the cross beam is provided with a main shaft support on the end close to the main shaft body, one side of the main shaft support is attached to one side of the equipment cabinet, the lower end of the main shaft support is fixedly connected to the equipment cabinet, and the upper end of the main shaft support is located on the lower side of the main shaft body.

[0014] In the above-mentioned tire locking device for balancing machine, the end of the cylinder assembly inside the fixed support is provided with a contact sleeve, the contact sleeve is connected to the pull rod fixing plate, the lower end of the side close to the wheel part of the equipment cabinet is provided with a control step, and one end of the control step is provided with a cylinder foot switch connected to the cylinder assembly. The cylinder assembly is connected to the pull rod fixing plate through the contact sleeve, the pull rod fixing plate is connected to the gas spring part and the pull rod respectively, and the cylinder foot switch is connected to the cylinder assembly.

[0015] In the above-mentioned tire locking device for balancing machine, the gas spring part has a pressure cylinder, the pressure cylinder is provided with a piston rod, the end of the pressure cylinder away from the piston rod is connected to the gas spring fixing plate, and the end of the piston rod away from the pressure cylinder is connected to the pull rod fixing plate.

[0016] Compared with the prior art, the device has the advantages that

[0017] 1. The device adopts a gas spring assembly to control the operation of the main shaft body, and in cooperation with the ball clamping structure, the wheel part can be quickly disassembled, the operation is convenient, the work efficiency is improved, and the working strength is reduced.

[0018] 2. The device sets the gas spring assembly outside the main shaft body, which can reduce the failure rate and prolong the service life of the main shaft body.

[0019] 3. The device uses a ball part and a pneumatic sleeve to fix the wheel part, reduces the wear degree, and facilitates replacement when the ball part is damaged. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the utility model.

[0021] Figure 2 is a structural explosion diagram of the utility model.

[0022] Figure 3 is a structural cross-sectional view of the utility model.

[0023] Figure 4 is a structural cross-sectional view of the main shaft body in the utility model.

[0024] In the drawing: equipment machine case 1, fixed support 11, wheel part 12, pneumatic sleeve 13, cone 14, cross beam part 15, hexagonal bolt 16, main shaft support frame 17, control console step 18, main shaft body 2, shaft core part 21, transmission sleeve 22, bearing 23, pull rod 24, wheel fixing part 25, pneumatic cylinder assembly 3, contact sleeve 31, pneumatic cylinder foot switch 32, gas spring assembly 4, gas spring fixing plate 41, gas spring part 42, pull rod fixing plate 43, sheath nut 44, pressure cylinder 45, piston rod 46, ball clamping structure 5, pneumatic lead screw 51, ball movable channel 52, pneumatic push head 53, pneumatic sharp head 54, ball clamping assembly 6, ball part 61, ball movable block 62, ball spring 63, ball movable gap 64, limit clasp spring 65, limit spring 66. DETAILED DESCRIPTION

[0025] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0026] For example, Figures 1-4As shown, a tire locking device for balancing machine includes a device cabinet 1, a fixed support 11 is arranged in the device cabinet 1, a main shaft body 2 is arranged at the upper end of the device cabinet 1, one end of the main shaft body 2 is arranged in the device cabinet 1, and the other end extends to the outside of the device cabinet 1, a wheel part 12 is sleeved on one end of the main shaft body 2 outside the device cabinet 1, a pneumatic sleeve 13 is arranged on the side of the wheel part 12 away from the device cabinet 1, one end of the fixed support 11 is provided with a cylinder assembly 3 connected with one end of the main shaft body 2, the outside of one end of the main shaft body 2 close to the fixed support 11 is provided with a gas spring assembly 4 connected with the main shaft body 2, and the inside of one end of the main shaft body 2 away from the cylinder assembly 3 is provided with a ball clamping structure 5 which can make the pneumatic sleeve 13 clamped with or separated from the main shaft body 2 when the main shaft body 2 moves axially, so as to fix or remove the wheel part 12. The cylinder assembly 3 controls the main shaft body 2, the main shaft body 2 drives the ball clamping structure 5, and the ball clamping structure 5 is used to control the pneumatic sleeve 13.

[0027] As shown, Figure 4 The main shaft body 2 has a shaft core part 21, a transmission sleeve 22 is sleeved on the circumferential outside of the shaft core part 21, the transmission sleeve 22 is connected with the shaft core part 21 through bearings 23 at both ends respectively, a pull rod 24 is arranged on the circumferential inside of the shaft core part 21, and the pull rod 24 axially extends towards the gas spring assembly 4 at the end away from the ball clamping structure 5. One end of the pull rod 24 is connected with the ball clamping structure 5, and the other end is connected with the gas spring assembly 4.

[0028] The gas spring assembly 4 has a gas spring fixing plate 41 arranged at the end of the shaft core part 21 away from the ball clamping structure 5, the pull rod 24 axially penetrates the middle part of the gas spring fixing plate 41, a plurality of gas spring parts 42 are arranged on the circumferential outside of the gas spring fixing plate 41, a pull rod fixing plate 43 is arranged at the end of the gas spring part 42 away from the gas spring fixing plate 41, and one end of the pull rod 24 is connected with the pull rod fixing plate 43 through a protective sleeve nut 44. The gas spring part 42 is connected with the pull rod 24 through the pull rod fixing plate 43, and the cooperation of the gas spring part 42 and the cylinder assembly 3 controls the operation of the pull rod 24.

[0029] Specifically, the ball clamping structure 5 includes a pneumatic lead screw 51 connected with the shaft core part 21 at one end, a ball movable channel 52 extending axially is arranged on both sides of the pneumatic lead screw 51 respectively, the pneumatic sleeve 13 is sleeved on the outside of the ball movable channel 52, a pneumatic push head 53 is arranged on the inside of one end of the pneumatic lead screw 51, a pneumatic sharp head 54 is arranged at the end of the pneumatic push head 53 away from the pull rod 24, and the pneumatic sharp head 54 is provided with a ball clamping assembly 6 corresponding to the ball movable channel 52 and in contact with the inside of the pneumatic sleeve 13 on the outside of one end close to the ball movable channel 52. The pull rod 24 pushes the pneumatic push head 53, and the pneumatic push head 53 pushes the pneumatic sharp head 54.

[0030] Further, the ball clamping assembly 6 comprises a plurality of ball members 61 movably arranged in the ball movement channel 52, the ball members 61 protrude outward from the end face of the ball movement channel 52 and contact the inner side of the pneumatic sleeve 13, the pneumatic tip 54 is provided with a ball movement block 62 on the outer side of one end close to the pneumatic push head 53, the ball movement block 62 is provided between the pneumatic tip 54 and the pneumatic push head 53, and the ball movement gap 64 is provided between the ball movement block 62 and the pneumatic push head 53, so that the outer side of the ball member 61 does not protrude from the end face of the ball movement channel 52, thereby separating the ball member 61 from the pneumatic sleeve 13, the limit snap spring 65 is arranged on the inner side of the end of the pneumatic lead screw 51 away from the shaft core 21, and the limit spring 66 is arranged between the limit snap spring 65 and the pneumatic tip 54. The pneumatic push head 53 moves into the ball movement gap 64 and contacts the pneumatic tip 54, and the slight movement of the pneumatic tip 54 loses the upward force on the ball member 61, so that the ball member 61 can enter the pneumatic lead screw 51, which is conducive to the installation of the pneumatic sleeve 13.

[0031] As shown in Figure 2 , the shaft core 21 is provided with a wheel fixing portion 25 on the outer side of the end close to the pneumatic lead screw 51, the pneumatic sleeve 13 is provided with a cone 14 arranged on the pneumatic lead screw 51 on the end close to the wheel member 12, the wheel member 12 is arranged between the wheel fixing portion 25 and the cone 14, and the end of the pneumatic sleeve 13 contacts the cone 14.

[0032] As shown in Figure 3 , the horizontal beam member 15 is horizontally fixed in the equipment cabinet 1, the fixed support 11 is arranged on the upper end of the horizontal beam member 15, and the hexagonal bolt 16 is arranged between the horizontal beam member 15 and the fixed support 11.

[0033] Among them, the horizontal beam member 15 is provided with a main shaft support frame 17 on the end close to the main shaft body 2, one side of the main shaft support frame 17 is attached to one side of the equipment cabinet 1, the lower end of the main shaft support frame 17 is fixedly connected to the equipment cabinet 1, and the upper end of the main shaft support frame 17 is located on the lower side of the main shaft body 2.

[0034] Specifically, the pneumatic cylinder assembly 3 is provided with a contact sleeve 31 on the end inside the fixed support 11, the contact sleeve 31 is connected to the pull rod fixing plate 43, the equipment cabinet 1 is provided with a control step 18 on the lower end of the side close to the wheel member 12, and the control step 18 is provided with a pneumatic cylinder foot switch 32 connected to the pneumatic cylinder assembly 3. The pneumatic cylinder assembly 3 is connected to the pull rod fixing plate 43 through the contact sleeve 31, the pull rod fixing plate 43 is connected to the gas spring member 42 and the pull rod 24 respectively, and the pneumatic cylinder foot switch 32 is connected to the pneumatic cylinder assembly 3.

[0035] As shown in Figure 4 , the gas spring member 42 has a pressure cylinder 45, the pressure cylinder 45 is provided with a piston rod 46, the pressure cylinder 45 is connected to the gas spring fixing plate 41 on the end away from the piston rod 46, and the piston rod 46 is connected to the pull rod fixing plate 43 on the end away from the pressure cylinder 45.

[0036] The principle of the embodiment is:

[0037] The contact sleeve 31 of the cylinder assembly 3 is connected with the pull rod fixing plate 43, the pull rod fixing plate 32 is connected with the pull rod 24 and the piston rod 46 respectively, when the cylinder foot switch 32 is stepped on, the cylinder assembly 3 operates, the pull rod 24 moves towards the direction of the pneumatic push head 53, pushes one end of the pneumatic push head 53 into the ball movable gap 64 and contacts with the pneumatic push head 53, the pneumatic push head 53 slightly contacts with the ball movable block 62, at this time, the ball 61 loses the top force of the pneumatic push head 54 and can enter the inside of the pneumatic lead screw 51, the pull rod 24 continues to move so that the ball spring 63 and the limiting spring 66 begin to tighten, the wheel part 12 is placed outside the pneumatic lead screw 51 and is attached to the wheel fixing part 25, then the cone 14 and the pneumatic sleeve 13 are installed, when the pneumatic sleeve 13 abuts against the cone 14 and the wheel part 12, the cylinder foot switch 32 is stepped on again, the cylinder assembly 3 and the gas spring part 42 pull the pull rod 24 back to the original position, the ball spring 63 and the limiting spring 66 begin to reset, the ball 61 protrudes outside the ball movable channel 52 under the top force of the pneumatic push head 54 and contacts with the inside of the pneumatic sleeve 13, so that the pneumatic sleeve 13 is fixed, thereby the wheel part 12 is fixed.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0039] Although the terms such as equipment case 1, fixing support 11, wheel part 12, pneumatic sleeve 13, cone 14, cross beam part 15, hexagonal bolt 16, main shaft support 17, control step 18, main shaft body 2, shaft core part 21, transmission sleeve 22, bearing 23, pull rod 24, wheel fixing part 25, cylinder assembly 3, contact sleeve 31, cylinder foot switch 32, gas spring assembly 4, gas spring fixing plate 41, gas spring part 42, pull rod fixing plate 43, sheath nut 44, pressure cylinder 45, piston rod 46, ball clamping structure 5, pneumatic lead screw 51, ball movable channel 52, pneumatic push head 53, pneumatic push head 54, ball clamping assembly 6, ball 61, ball movable block 62, ball spring 63, ball movable gap 64, limiting clamping spring 65, limiting spring 66 are used more frequently in the text, but the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A tire locking device for a balancing machine, comprising an equipment chassis (1), wherein a fixing bracket (11) is provided in the equipment chassis (1), a main shaft body (2) is provided at the upper end of the equipment chassis (1), one end of the main shaft body (2) is arranged in the equipment chassis (1), and the other end extends to the outside of the equipment chassis (1) and one end of the main shaft body (2) located outside the equipment chassis (1) is sleeved with a wheel component (12), and a pneumatic sleeve (13) is provided on the side of the wheel component (12) away from the equipment chassis (1), characterized in that: One end of the fixed bracket (11) is provided with a cylinder assembly (3) connected to one end of the main shaft body (2); the outer side of the end of the main shaft body (2) close to the fixed bracket (11) is provided with a gas spring assembly (4) connected to the main shaft body (2); and the inner side of the end of the main shaft body (2) away from the cylinder assembly (3) is provided with a ball clamping structure (5) that can clamp or disengage the pneumatic sleeve (13) from the main shaft body (2) when the main shaft body (2) moves axially, thereby fixing or removing the wheel component (12).

2. The tire locking device for a balancing machine according to claim 1, characterized in that: The main shaft body (2) has an axial core part (21), and a transmission sleeve (22) is provided on the circumferential outer side of the axial core part (21). The two ends of the transmission sleeve (22) are respectively connected to the axial core part (21) through bearings (23). A pull rod (24) is provided on the circumferential inner side of the axial core part (21), and the pull rod (24) extends axially toward the gas spring assembly (4) away from one end of the ball clamping structure (5).

3. The tire locking device for a balancing machine according to claim 2, characterized in that: The gas spring assembly (4) has a gas spring fixing plate (41) arranged at one end of the shaft core member (21) away from the ball clamping structure (5), the pull rod (24) axially passes through the middle of the gas spring fixing plate (41), a plurality of gas spring members (42) are provided on the circumferential outer side of the gas spring fixing plate (41), a pull rod fixing plate (43) is provided at one end of the gas spring member (42) away from the gas spring fixing plate (41), and one end of the pull rod (24) is connected to the pull rod fixing plate (43) through a sheath nut (44).

4. The tire locking device for a balancing machine according to claim 2 or 3, characterized in that: The ball clamping structure (5) includes a pneumatic screw (51) connected to the shaft core (21) at one end, and axially extending ball movable channels (52) are respectively provided on both sides of the pneumatic screw (51). The pneumatic sleeve (13) is sleeved on the outside of the ball movable channel (52). A pneumatic push head (53) is provided on the inner side of one end of the pneumatic screw (51), and a pneumatic tip (54) is provided on the end of the pneumatic push head (53) away from the pull rod (24), and a ball clamping assembly (6) corresponding to the ball movable channel (52) and in contact with the inner side of the pneumatic sleeve (13) is provided on the outer side of the end of the pneumatic tip (54) close to the ball movable channel (52).

5. The tire locking device for a balancing machine according to claim 4, characterized in that: The ball clamping assembly (6) includes a plurality of ball members (61) movably arranged in the ball moving channel (52), the outer side of the ball member (61) protrudes from the end surface of the ball moving channel (52) and contacts the inner side of the pneumatic sleeve (13), the outer side of the pneumatic tip (54) close to the pneumatic push head (53) is provided with a ball moving block (62), and a ball spring (63) is provided between the ball moving block (62) and the pneumatic tip (54). A ball movable gap (64) is provided between the ball movable block (62) and the pneumatic push head (53) so that the outer side of the ball member (61) does not protrude from the end surface of the ball movable channel (52) and the ball member (61) is separated from the pneumatic sleeve (13). A limit spring (65) is provided on the inner side of the end of the pneumatic screw (51) away from the shaft core member (21), and a limit spring (66) is provided between the limit spring (65) and the pneumatic tip (54).

6. The tire locking device for a balancing machine according to claim 5, characterized in that: The shaft core (21) is provided with a wheel fixing portion (25) on the outer side of one end close to the pneumatic screw (51), and the pneumatic sleeve (13) is provided with a cone (14) sleeved on the pneumatic screw (51) on one end close to the wheel member (12). The wheel member (12) is arranged between the wheel fixing portion (25) and the cone (14), and one end of the pneumatic sleeve (13) is in contact with the cone (14).

7. The tire locking device for a balancing machine according to claim 1, characterized in that: A crossbeam (15) is transversely fixed in the equipment chassis (1), the fixing bracket (11) is arranged at the upper end of the crossbeam (15), and a hexagonal bolt (16) is provided between the crossbeam (15) and the fixing bracket (11).

8. The tire locking device for a balancing machine according to claim 7, characterized in that: The crossbeam (15) is provided with a spindle support frame (17) at one end close to the spindle body (2), one side of the spindle support frame (17) is in contact with one side of the equipment chassis (1), the lower end of the spindle support frame (17) is fixedly connected to the equipment chassis (1), and the upper end of the spindle support frame (17) is located on the lower side of the spindle body (2).

9. The tire locking device for a balancing machine according to claim 3, characterized in that: A contact sleeve (31) is provided at one end of the cylinder assembly (3) and located on the inner side of the fixed bracket (11), and the contact sleeve (31) is connected to the pull rod fixing plate (43). A control step (18) is provided at the lower end of the side of the equipment chassis (1) close to the wheel part (12), and a cylinder foot switch (32) connected to the cylinder assembly (3) is provided at one end of the control step (18).

10. The tire locking device for a balancing machine according to claim 3, characterized in that: The gas spring component (42) has a pressure cylinder (45), a piston rod (46) is provided in the pressure cylinder (45), the end of the pressure cylinder (45) away from the piston rod (46) is connected to the gas spring fixing plate (41), and the end of the piston rod (46) away from the pressure cylinder (45) is connected to the pull rod fixing plate (43).

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