All-steel radial tire continuous weighing rack

Abstract

The invention relates to the technical field of tire weighing racks, in particular to an all-steel radial tire continuous weighing rack which comprises a base, a feeding seat, a feeding conveying belt, a discharging seat, a discharging conveying belt, a first motor and a second motor. A height difference exists between the feeding base and the discharging base, the feeding conveying belt is movably arranged on the feeding base, the first motor is arranged on the feeding base, the output end of the first motor is connected with the feeding conveying belt, and the discharging conveying belt is movably arranged on the discharging base. The second motor is arranged on the discharging conveying seat, the output end of the second motor is connected with the discharging conveying belt, the weighing rack further comprises a weighing table, a control table and a weighing system, the weighing table is arranged on the base, the control table is arranged on the weighing table, and the weighing system is arranged on the weighing table; and the tire can be prevented from shaking in the weighing process, and the error phenomenon is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tire weighing platforms, and more specifically to a continuous weighing platform for all-steel radial tires. Background Art

[0002] With the rapid development of express delivery and logistics industries, road transportation has also changed accordingly. Cross-regional long-distance transportation has occupied an important part of the automotive industry, which has greatly increased the demand for high-speed, high-wear, low rolling resistance and long-life all-steel radial tires.

[0003] After the production of all-steel radial tires is completed, their weight needs to be measured. The existing tire continuous weighing adopts an assembly line method. The tires are transported to the weighing platform for weighing according to the conveyor belt, but the tires are still in a moving or shaking state, which makes it easy for errors to occur during the weighing process. Summary of the invention

[0004] The purpose of the present invention is to provide a continuous weighing stand for all-steel radial tires to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A continuous weighing platform for all-steel radial tires, comprising a base, a feed seat, a feed conveyor belt, a discharge seat, a discharge conveyor belt, a first motor and a second motor, wherein the feed seat and the discharge seat are respectively arranged on both sides of the base, and there is a height difference between the feed seat and the discharge seat, the feed conveyor belt is movably arranged on the feed seat, the first motor is arranged on the feed seat and its output end is connected to the feed conveyor belt, the discharge conveyor belt is movably arranged on the discharge seat, the second motor is arranged on the discharge conveyor seat and its output end is connected to the discharge conveyor belt, the weighing platform also comprises a weighing platform, a control console and a weighing system, the weighing platform is arranged on the base, the control console is arranged on the weighing platform, and the weighing system is arranged on the weighing platform, for performing tire weighing work;

[0007] The weighing system includes a limit assembly and a measuring assembly. The measuring assembly is arranged on a weighing platform and is used to receive a tire and measure the weight of the tire. The limit assembly is arranged on the weighing platform and is connected to the measuring assembly. When the measuring assembly is working, it controls the limit assembly to work and performs limit processing on the tire.

[0008] A further technical solution of the present application is as follows: the measuring component comprises a moving seat, rollers, a lifting platform and a feedback unit; the moving seat is movably arranged on the weighing platform; the rollers are several in number and symmetrically and movably arranged on the moving seat; the weighing platform is provided with a longitudinal guide groove for slidingly cooperating with the rollers; the moving seat is elastically connected to the weighing platform via a folding piece; the lifting platform is movably arranged on the weighing platform and is hinged to the moving seat at its middle position; the feedback unit is arranged on the weighing platform and connected to the moving seat via a folding piece, and is used for feeding back the displacement data of the moving seat to the control console.

[0009] A further technical solution of the present application is as follows: the folding part includes a scissor arm, a skateboard, a slider and a transverse guide groove; the transverse guide grooves are symmetrically formed on the movable seat; a slider is movably arranged in each of the transverse guide grooves and the two are elastically connected; the skateboard is movably arranged on the weighing platform; the skateboard is movably connected to the movable seat through the scissor arm; the slider is movably connected to the weighing platform through the scissor arm; the scissor arms on the same side are staggered and hinged to each other at their middle positions; a torsion spring is arranged at the hinge of the scissor arm on the same side.

[0010] A further technical solution of the present application is as follows: the feedback unit includes a conductive block and a resistor bar, the conductive block is arranged on a slide plate, the resistor bar is arranged on a weighing platform and slidably cooperates with the conductive block, and the conductive block, the resistor bar and the control console are electrically connected.

[0011] The present application has a further technical solution: the measuring component also includes an angle adjustment structure for adjusting the angle between the moving seat and the lifting platform.

[0012] The present application has a further technical solution: the angle adjustment structure includes a connecting head, a push plate and a hydraulic cylinder, the hydraulic cylinder is arranged on a movable seat, a connecting head is arranged between the movable end of the hydraulic cylinder and the lifting platform, and the connecting heads are movably connected through the push plate.

[0013] The present application has a further technical solution: the limit assembly includes a mounting plate, a limit execution structure and a transmission structure, the mounting plates are symmetrically arranged on the lifting platform, the limit execution structure is arranged on the mounting plate, and the transmission structure is arranged between the skateboard and the limit execution structure. When the skateboard moves, the limit execution structure is controlled by the skateboard to work and limit the tire.

[0014] A further technical solution of the present application is as follows: the limit execution structure includes a connecting block, a positioning guide groove, a movable arm, a movable wheel, a contact positioning plate and a driving member; the positioning guide grooves are symmetrically arranged on the lifting platform, a connecting block is movably arranged in each of the positioning guide grooves and the two are elastically connected; a limit rod is arranged on the connecting block on the opposite side of the movable arm; the movable wheel is movably arranged at an end of the movable arm away from the connecting block; the positioning guide groove is arranged obliquely relative to the lifting platform; the contact positioning plate is arranged on the lifting platform and on one side of the positioning guide groove; the contact positioning plate and the connecting block are connected by a spring; the inner wall of the contact positioning plate and the movable wheel are slidably matched; the driving member is arranged on the mounting plate and connected to the movable arm, for controlling the movable arm and the connecting block to move along the positioning guide groove.

[0015] A further technical solution of the present application is as follows: the driving member includes a cylinder and a guide block, the guide block is movably arranged on the lifting platform, the movable arm slides through the through groove formed on the guide block, the cylinder is arranged on the mounting plate and its movable end is connected to the guide block, the cylinder is connected to the transmission structure, and the transmission structure controls the extension and retraction of the cylinder when working.

[0016] A further technical solution of the present application is as follows: the transmission structure includes a hose, an air cylinder and a piston rod, the air cylinder is arranged on a weighing platform, the piston rod is movably arranged in the air cylinder and one end is connected to a slide plate, and the air cylinder is connected to a cylinder via a hose.

[0017] Compared with the prior art, the technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0018] The embodiment of the present invention sets a measuring component and a limiting component, and utilizes the linkage structure between the measuring component and the limiting component. On the one hand, the measuring component can measure the weight of the tire. On the other hand, while the measuring component is working, the limiting component can be controlled to clamp and limit the tire in the tire chassis. By clamping and limiting the tire, shaking of the tire during the weighing process can be avoided, thereby reducing the occurrence of errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a continuous weighing stand for all-steel radial tires in an embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a weighing system in a continuous weighing stand for all-steel radial tires in an embodiment of the present invention;

[0021] Figure 3 It is a schematic structural diagram of a limit assembly in a continuous weighing stand for all-steel radial tires in an embodiment of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the angle adjustment structure in the continuous weighing stand for all-steel radial tires in an embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the measuring assembly in the continuous weighing stand for all-steel radial tires in an embodiment of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a limit execution structure in a continuous weighing stand for all-steel radial tires in an embodiment of the present invention;

[0025] Figure 7 It is an assembly diagram of a moving arm and a limiting rod in a continuous weighing stand for all-steel radial tires in an embodiment of the present invention;

[0026] Figure 8 Schematic diagram of the structure of the feedback unit in the continuous weighing stand for all-steel radial tires in an embodiment of the present invention.

[0027] Explanation of the symbols in the schematic diagram:

[0028] 1-base, 2-feeding seat, 3-feeding conveyor belt, 4-discharging seat, 5-discharging conveyor belt, 6-weighing table, 7-control console, 8-lifting platform, 9-inflator, 10-hose, 11-cylinder, 12-longitudinal guide groove, 13-moving seat, 14-roller, 15-push plate, 16-transverse guide groove, 17-slider, 19-hydraulic cylinder, 20-connector, 21-slide plate, 22-scissor arm, 23-conductive block, 24-resistance bar, 25-mounting plate, 26-limit rod, 27-adjusting guide groove, 28-guide block, 29-moving arm, 30-moving wheel, 31-connecting block, 32-spring, 33-No. 1 motor, 34-No. 2 motor, 35-resistance adjustment plate. DETAILED DESCRIPTION

[0029] 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. The present invention is further described below in combination with the embodiments.

[0030] See also Figure 1-Figure 8In one embodiment of the present application, a continuous weighing platform 6 for all-steel radial tires includes a base 1, a feed seat 2, a feed conveyor belt 3, a discharge seat 4, a discharge conveyor belt 5, a first motor 33 and a second motor 34, wherein the feed seat 2 and the discharge seat 4 are respectively arranged on both sides of the base 1, and there is a height difference between the feed seat 2 and the discharge seat 4, the feed conveyor belt 3 is movably arranged on the feed seat 2, the first motor 33 is arranged on the feed seat 2 and its output end is connected to the feed conveyor belt 3, the discharge conveyor belt 5 is movably arranged on the discharge seat 4, the second motor 34 is arranged on the discharge conveyor seat and its output end is connected to the discharge conveyor belt 5, the weighing platform 6 also includes a weighing platform 6, a control console 7 and a weighing system, the weighing platform 6 is arranged on the base 1, the control console 7 is arranged on the weighing platform 6, and the weighing system is arranged on the weighing platform 6 for performing tire weighing work;

[0031] The weighing system includes a limit assembly and a measuring assembly. The measuring assembly is arranged on the weighing platform 6 and is used to receive the tire and measure the weight of the tire. The limit assembly is arranged on the weighing platform 6 and is connected to the measuring assembly. When the measuring assembly is working, it controls the limit assembly to work and performs limit processing on the tire.

[0032] In a specific case of the present embodiment, the measuring component includes a moving seat 13, rollers 14, a lifting platform 8 and a feedback unit, the moving seat 13 is movably arranged on the weighing platform 6, the rollers 14 are in number and are symmetrically and movably arranged on the moving seat 13, the weighing platform 6 is provided with a longitudinal guide groove 12 which slides with the rollers 14, the moving seat 13 is elastically connected to the weighing platform 6 through a folding piece, the lifting platform 8 is movably arranged on the weighing platform 6 and its middle position is hinged to the moving seat 13, the feedback unit is arranged on the weighing platform 6 and is connected to the moving seat 13 through a folding piece, and is used to feed back the displacement data of the moving seat 13 to the console 7.

[0033] In another specific case of the present embodiment, the folding part includes a scissor arm 22, a slide plate 21, a slider 17 and a transverse guide groove 16. The transverse guide groove 16 is symmetrically formed on the movable seat 13. A slider 17 is movably arranged in each of the transverse guide grooves 16 and the two are elastically connected. The slide plate 21 is movably arranged on the weighing platform 6. The slide plate 21 is movably connected to the movable seat 13 through the scissor arm 22. The slider 17 is movably connected to the weighing platform 6 through the scissor arm 22. The scissor arms 22 on the same side are staggered and hinged to each other at the middle position. A torsion spring is arranged at the hinge of the scissor arm 22 on the same side.

[0034] It should be noted that the feedback unit includes a conductive block 23 and a resistor bar 24. The conductive block 23 is arranged on the slide plate 21, and the resistor bar 24 is arranged on the weighing platform 6 and slidably cooperates with the conductive block 23. The conductive block 23, the resistor bar 24 and the console 7 are electrically connected.

[0035] It should be noted that the present embodiment is not limited to the above-mentioned combination of the resistor bar 24 and the conductive block 23 to realize the monitoring of the position of the slide plate 21, and an infrared ranging sensor or a laser ranging sensor may also be used instead, which are not listed here one by one.

[0036] In actual application, the tire is placed on the discharge conveyor belt 5, and the No. 2 motor 34 is powered on and rotated to drive the discharge conveyor belt 5 to rotate, and the transport tire moves toward the lifting platform 8, and finally the tire falls on the lifting platform 8. Under the gravity of the tire, the lifting platform 8 and the moving seat 13 move down along the longitudinal guide groove 12, so that under the action of the scissor arm 22 and the slider 17, the scissor arm 22 can be controlled to move and drive the slide plate 21 to move along the weighing platform 6. In the process of the slide plate 21 moving on the weighing platform 6, the conductive block 23 can be driven to move synchronously. According to the different positions of the conductive block 23 on the resistor bar 24, the resistance value connected to the control console 7 is different, and then the weight data of the tire is obtained according to the resistance value of the connected circuit. In the process of the movement of the slide plate 21, the limit assembly can be driven to clamp and limit the tire, which ensures the stability of the tire during measurement and reduces the occurrence of data errors. Finally, the measured tire falls on the feed conveyor belt 3, and the No. 2 motor 34 is powered on and rotated to drive the feed conveyor belt 3 to move, so that the tire is input into the subsequent detection process.

[0037] See also Figure 1-Figure 4 As another preferred embodiment of the present application, the measuring component also includes an angle adjustment structure for adjusting the angle between the moving seat 13 and the lifting platform 8.

[0038] In this exemplary embodiment, the angle adjustment structure includes a connecting head 20, a push plate 15 and a hydraulic cylinder 19. The hydraulic cylinder 19 is arranged on a moving seat 13. A connecting head 20 is arranged between the movable end of the hydraulic cylinder 19 and the lifting platform 8. The connecting heads 20 are movably connected through the push plate 15.

[0039] After placing the tire on the discharge conveyor belt 5, the No. 2 motor 34 is powered on and rotated, thereby driving the discharge conveyor belt 5 to rotate and transporting the tire toward the lifting platform 8. After completing the weighing of the tire, the hydraulic cylinder 19 is controlled to extend, so that under the action of the connecting head 20 and the push plate 15, the lifting platform 8 is controlled to rotate to the expected angle relative to the moving seat 13, so that the lifting platform 8 and the feeding conveyor belt 3 are connected, and the No. 1 motor 33 is powered on and rotated, thereby driving the feeding conveyor belt 3 to rotate, and the weighed tire is input into the next detection process.

[0040] See also Figure 1-Figure 8 As another preferred embodiment of the present application, the limit assembly includes a mounting plate 25, a limit execution structure and a transmission structure. The mounting plate 25 is symmetrically arranged on the lifting platform 8, the limit execution structure is arranged on the mounting plate 25, and the transmission structure is arranged between the slide plate 21 and the limit execution structure. When the slide plate 21 moves, the limit execution structure is controlled by the slide plate 21 to work and limit the tire.

[0041] In a specific case of the present embodiment, the limit execution structure includes a connecting block 31, a positioning guide groove 27, a movable arm 29, a movable wheel 30, a contact positioning plate 35 and a driving member. The lifting platform 8 is symmetrically provided with positioning guide grooves 27, and a connecting block 31 is movably provided in each of the positioning guide grooves 27 and the two are elastically connected. A limit rod 26 is provided on the connecting block 31 on the opposite side of the movable arm 29, and the movable wheel 30 is movably provided at an end of the movable arm 29 away from the connecting block 31. The positioning guide groove 27 is arranged obliquely relative to the lifting platform 8, and the contact positioning plate 35 is provided on the lifting platform 8 and is located on one side of the positioning guide groove 27. The contact positioning plate 35 and the connecting block 31 are connected by a spring 32, and the inner wall of the contact positioning plate 35 is slidably matched with the movable wheel 30. The driving member is provided on the mounting plate 25 and connected to the movable arm 29, and is used to control the movable arm 29 and the connecting block 31 to move along the positioning guide groove 27.

[0042] In another specific case of this embodiment, the driving member includes a cylinder 11 and a guide block 28, the guide block 28 is movably arranged on the lifting platform 8, the movable arm 29 slides through the through groove formed on the guide block 28, the cylinder 11 is arranged on the mounting plate 25 and its movable end is connected to the guide block 28, the cylinder 11 is connected to the transmission structure, and the transmission structure controls the extension and retraction of the cylinder 11 when working.

[0043] It should be noted that the transmission structure includes a hose 10, an air cylinder 9 and a piston rod. The air cylinder 9 is arranged on the weighing platform 6. The piston rod is movably arranged in the air cylinder 9 and one end is connected to the slide plate 21. The air cylinder 9 is connected to the cylinder 11 through the hose 10.

[0044] When the tire is placed on the lifting platform 8, the lifting platform 8 and the moving seat 13 move downward, driving the slide plate 21 to move. When the slide plate 21 moves, it can drive the piston rod to move along the inflation cylinder 9, so that the air in the inflation cylinder 9 is squeezed into the cylinder 11, so that the cylinder 11 contracts. It should be supplemented that the air inlet point of the cylinder 11 is on one side of the guide block 28. When the cylinder 11 contracts, it can drive the guide block 28 to move, so that under the sliding cooperation between the guide block 28 and the moving arm 29, the moving arm 29 and the connecting block 31 move along the direction of the positioning guide groove 27. Since the positioning guide groove 27 is arranged obliquely, the limiting rods 26 are driven to move closer to each other, and in this process, under the sliding cooperation between the moving wheel 30 and the contact adjustment plate 35, the limiting rod 26 can be driven to move relative to the connecting block 31, so that the limiting rod 26 is close to the tire, realizing the clamping and limiting work of the tire, avoiding the shaking of the tire when the tire is weighed. Error in weighing data.

[0045] How this application works:

[0046] After placing the tire on the discharge conveyor belt 5, the No. 2 motor 34 is powered on and rotated, thereby driving the discharge conveyor belt 5 to rotate and transporting the tire toward the lifting platform 8. After completing the weighing of the tire, the hydraulic cylinder 19 is controlled to extend, so that under the action of the connecting head 20 and the push plate 15, the lifting platform 8 is controlled to rotate to the expected angle relative to the moving seat 13, so that the lifting platform 8 and the feeding conveyor belt 3 are connected, and the No. 1 motor 33 is powered on and rotated, thereby driving the feeding conveyor belt 3 to rotate, and the weighed tire is input into the next detection process. Under the action of the gravity of the tire, the lifting platform 8 and the moving seat 13 move down along the longitudinal guide groove 12, so that under the action of the scissor arm 22 and the slider 17, the scissor arm 22 can be controlled to move and drive the slide plate 21 to move along the weighing platform 6. In the process of the slide plate 21 moving on the weighing platform 6, the conductive block 23 can be driven to move synchronously. According to the different positions of the conductive block 23 on the resistor bar 24, the resistance value connected to the control console 7 is different, and then the weight data of the tire is obtained according to the resistance value of the connected circuit. When the tire is placed on the lifting platform 8, the lifting platform 8 and the moving seat 13 move down, driving the slide plate 21 to move. When the slide plate 21 moves, it can drive the piston rod to move along the air cylinder 9, thereby squeezing the air in the air cylinder 9 into the cylinder 11, so that The cylinder 11 contracts. It should be noted that the air inlet point of the cylinder 11 is on one side of the guide block 28. When the cylinder 11 contracts, it can drive the guide block 28 to move, so that under the sliding cooperation between the guide block 28 and the movable arm 29, the movable arm 29 and the connecting block 31 move along the direction of the positioning guide groove 27. Since the positioning guide groove 27 is arranged at an angle, the limit rods 26 are driven to move closer to each other, and in this process, under the sliding cooperation between the movable wheel 30 and the abutting positioning plate 35, the limit rod 26 can be driven to move relative to the connecting block 31, so that the limit rod 26 is close to the tire, thereby realizing the clamping and limiting work of the tire, and avoiding the shaking of the tire when the tire is weighed, causing errors in the weighing data.

[0047] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A continuous weighing platform for all-steel radial tires, comprising a base, a feed seat, a feed conveyor belt, a discharge seat, a discharge conveyor belt, a No. 1 motor and a No. 2 motor, wherein the feed seat and the discharge seat are respectively arranged on both sides of the base, and there is a height difference between the feed seat and the discharge seat, the feed conveyor belt is movably arranged on the feed seat, the No. 1 motor is arranged on the feed seat and its output end is connected to the feed conveyor belt, the discharge conveyor belt is movably arranged on the discharge seat, the No. 2 motor is arranged on the discharge conveyor seat and its output end is connected to the discharge conveyor belt, characterized in that: The weighing platform also includes a weighing platform, a control console and a weighing system. The weighing platform is arranged on the base, the control console is arranged on the weighing platform, and the weighing system is arranged on the weighing platform for performing tire weighing work. The weighing system includes a limit assembly and a measuring assembly. The measuring assembly is arranged on a weighing platform and is used to receive a tire and measure the weight of the tire. The limit assembly is arranged on the weighing platform and is connected to the measuring assembly. When the measuring assembly is working, it controls the limit assembly to work and performs limit processing on the tire.

2. The all-steel radial tire continuous weighing stand according to claim 1, characterized in that: The measuring assembly includes a moving seat, rollers, a lifting platform and a feedback unit. The moving seat is movably arranged on the weighing platform. There are several rollers that are symmetrically and movably arranged on the moving seat. The weighing platform is provided with a longitudinal guide groove that slides with the rollers. The moving seat is elastically connected to the weighing platform through a folding piece. The lifting platform is movably arranged on the weighing platform and is hinged to the moving seat at its middle position. The feedback unit is arranged on the weighing platform and connected to the moving seat through a folding piece, and is used to feed back the displacement data of the moving seat to the control console.

3. The all-steel radial tire continuous weighing stand according to claim 2, characterized in that: The folding part includes a scissor arm, a skateboard, a slider and a transverse guide groove. The movable seat is symmetrically formed with a transverse guide groove. A slider is movably arranged in each of the transverse guide grooves and the two are elastically connected. The skateboard is movably arranged on the weighing platform. The skateboard is movably connected to the movable seat through the scissor arm. The slider is movably connected to the weighing platform through the scissor arm. The scissor arms on the same side are staggered and hinged to each other at the middle position. A torsion spring is arranged at the hinge of the scissor arm on the same side.

4. The all-steel radial tire continuous weighing stand according to claim 3, characterized in that: The feedback unit includes a conductive block and a resistor bar. The conductive block is arranged on a slide plate. The resistor bar is arranged on a weighing platform and slidably cooperates with the conductive block. The conductive block, the resistor bar and the control console are electrically connected.

5. The all-steel radial tire continuous weighing stand according to claim 2, characterized in that: The measuring assembly also includes an angle adjustment structure for adjusting the angle between the moving seat and the lifting platform.

6. The all-steel radial tire continuous weighing stand according to claim 5, characterized in that: The angle adjustment structure includes a connecting head, a push plate and a hydraulic cylinder. The hydraulic cylinder is arranged on a moving seat. Connecting heads are arranged between the movable ends of the hydraulic cylinder and the lifting platform. The connecting heads are movably connected through the push plate.

7. The all-steel radial tire continuous weighing stand according to claim 3, characterized in that: The limit assembly includes a mounting plate, a limit execution structure and a transmission structure. The mounting plates are symmetrically arranged on the lifting platform. The limit execution structure is arranged on the mounting plate. The transmission structure is arranged between the slide plate and the limit execution structure. When the slide plate moves, the limit execution structure is controlled by the slide plate to work and limit the tire.

8. The all-steel radial tire continuous weighing stand according to claim 7, characterized in that: The limit execution structure includes a connecting block, a positioning guide groove, a movable arm, a movable wheel, a contact positioning plate and a driving member. The lifting platform is symmetrically provided with the positioning guide grooves, each of which is movably provided with a connecting block and the two are elastically connected. A limiting rod is provided on the connecting block on the opposite side of the movable arm, the movable wheel is movably provided at an end of the movable arm away from the connecting block, the positioning guide groove is tilted relative to the lifting platform, the contact positioning plate is provided on the lifting platform and is located on one side of the positioning guide groove, the contact positioning plate and the connecting block are connected by a spring, the inner wall of the contact positioning plate and the movable wheel are slidably matched, and the driving member is provided on the mounting plate and connected to the movable arm, for controlling the movable arm and the connecting block to move along the positioning guide groove.

9. The all-steel radial tire continuous weighing stand according to claim 8, characterized in that: The driving member includes a cylinder and a guide block, the guide block is movably arranged on the lifting platform, the movable arm slides through the through groove formed on the guide block, the cylinder is arranged on the mounting plate and its movable end is connected to the guide block, the cylinder is connected to the transmission structure, and the transmission structure controls the extension and retraction of the cylinder when working.

10. The all-steel radial tire continuous weighing stand according to claim 9, characterized in that: The transmission structure comprises a hose, an air cylinder and a piston rod. The air cylinder is arranged on a weighing platform. The piston rod is movably arranged in the air cylinder and one end of the piston rod is connected to a slide plate. The air cylinder is connected to a cylinder through a hose.

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