Centring device for off-road vehicle tyres

Abstract

This invention provides a centering device for off-highway wheel tires, belonging to the technical field of wheel assembly equipment. It includes an electric conveyor line, which comprises several parallel conveyor rollers mounted on a conveyor frame. Longitudinally arranged lifting cylinders are fixed on both the front and rear sides of the conveyor frame. A centering bracket is fixed between the drive ends of two lifting cylinders. The centering bracket has two opposing centering slide plates driven by the cylinders. Each centering slide plate has a longitudinally arranged centering short rod, and a centering roller is rotatably mounted on the top of the centering short rod. Two tire support plates are fixed on the centering bracket along the length of the conveyor rollers. This invention has the advantages of small space occupation in the centering structure and high efficiency in centering operations.

Description

Technical Field

[0001] This utility model belongs to the technical field of wheel assembly equipment, and specifically refers to a centering device for off-road wheel tires. Background Technology

[0002] Off-highway equipment, such as tractors, harvesters, and other off-highway vehicles, generally have wheels that are large in size and heavy. This presents transportation difficulties during the continuous assembly of tire assemblies, significantly reducing assembly efficiency.

[0003] In traditional transportation processes, tires, due to their significant weight, are typically transported using conveyor belts. To facilitate subsequent clamping and tight mounting with the corresponding wheel rims, the tires on the conveyor belt usually need to be centered, allowing for accurate gripping by the subsequent clamping device. Traditional centering schemes are relatively complex, often located at the end of the conveyor line, occupying a considerable amount of space along the entire line. Utility Model Content

[0004] The purpose of this invention is to provide a centering device for off-road wheel tires, which occupies little space, has a significant centering effect, facilitates subsequent clamping and assembly, and improves work efficiency.

[0005] The purpose of this utility model is achieved as follows: A centering device for off-highway wheel tires includes an electric conveyor line. The electric conveyor line includes several parallel conveyor rollers mounted on a conveyor frame. Longitudinally arranged lifting cylinders are fixed on both the front and rear sides of the conveyor frame. A centering bracket is fixed between the drive ends of two lifting cylinders. Two centering slide plates driven by the cylinders and sliding in opposite directions are mounted on the centering bracket. Each of the two centering slide plates has a longitudinally arranged centering rod, and a centering roller is rotatably mounted on the top of the centering rod. Two tire support plates are fixed on the centering bracket along the length of the conveyor rollers. When the tire is conveyed to a predetermined position above the centering bracket, the lifting cylinders drive the centering bracket and the tire support plates to move upwards. The centering rods move upwards from the gap between adjacent conveyor rollers and extend into the tire's beak to measure the tire size.

[0006] The present invention is further configured such that the centering bracket is provided with a slide rail for sliding the two centering slides, and side cylinders arranged opposite to each other are fixed on the two side walls of the centering bracket, and the driving end of the side cylinder drives the centering slide to slide along the slide rail.

[0007] The present invention is further configured such that a synchronous seat plate is fixed in the middle of the centering bracket, a synchronous gear is rotatably connected in the middle of the synchronous seat plate, and racks are fixed at the bottom of the two centering slides respectively, with the two racks facing each other and both racks meshing with the synchronous gear.

[0008] The present invention is further configured such that a rack stop block is fixed on the synchronous seat plate and is arranged facing each other, and the rack stop block is provided with a guide groove for embedding the rack side wall.

[0009] The present invention is further configured such that the tire support plate is provided with a plurality of universal balls.

[0010] The outstanding and beneficial technical effects of this utility model compared to the prior art are: 1. The centering device provided by this utility model is integrated below the conveyor line, and occupies little space when the lifting structure is in operation, avoiding the need for the extension of the conveyor line required by traditional end centering devices; the device uses a centering roller to contact the inside of the tire bead, avoiding positioning deviation caused by gravity deformation of large-sized tires, while the two centering short rods can confirm the size of the tire.

[0011] 2. This utility model further adopts a side cylinder to push the slide plate to ensure that the two centering rollers can contact the tire toe at the same time; the synchronous gear and the opposing rack are forced to move together to solve the problem of centering center offset caused by asynchronous cylinder action; at the same time, the guide groove on the rack stop can facilitate the embedding of the rack side wall and prevent the rack from vibrating and disengaging from the synchronous gear.

[0012] 3. The universal ball provided in this utility model can effectively reduce friction and prevent wear on the tire sidewalls during centering. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a partially exploded schematic diagram of the synchronizing gear of this utility model; Figure label: 1-Electric conveyor line; 10-Conveyor frame; 11-Conveyor roller; 12-Lifting cylinder; 2-Centering bracket; 20-Slide rail; 21-Side cylinder; 3-Centering slide plate; 30-Centering short rod; 31-Centering roller; 32-Rack and pinion; 4-Tire support plate; 40-Universal ball joint; 5-Synchronous base plate; 50-Synchronous gear; 51-Rack stop; 52-Guide groove. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1 — Figure 3 : A centering device for off-highway wheel tires includes an electric conveyor line 1, which includes several parallel conveyor rollers 11 mounted on a conveyor frame 10. Longitudinally arranged lifting cylinders 12 are fixed on both the front and rear sides of the conveyor frame 10. A centering bracket 2 is fixed between the drive ends of two lifting cylinders 12. Centering slide plates 3, driven by cylinders, slide in opposite directions on both sides of the centering bracket 2. Longitudinally arranged centering short rods 30 are mounted on both centering slide plates 30, and centering rollers 31 are rotatably mounted on the top of the centering short rods 30. Two tire support plates 4 are fixed on the centering bracket 2 along the length of the conveyor rollers. When the tire is conveyed to a predetermined position above the centering bracket 2, the lifting cylinders 12 drive the centering bracket 2 and the tire support plates 4 to move upwards. The centering short rods 30 move upwards from the gap between adjacent conveyor rollers 11 and extend into the tire's toe, thus measuring the tire size.

[0015] During implementation, the tire is continuously fed via the conveyor rollers 11 on the electric conveyor line 1. When the sensor receives a signal, the tire stops above the centering bracket 2. The two lifting cylinders 12 drive the centering bracket 2 to move upward, simultaneously lifting the tire support plate 4 upward from the gap between the adjacent conveyor rollers 11. The centering roller on the centering rod 30 extends from the tire's toe and is then driven by the cylinder to move the centering slide plate 3, allowing the centering roller 31 to drive the tire for centering. After centering is completed, the lifting cylinders 12 descend, and the tire moves downward with the tire support plate, facilitating subsequent clamping operations.

[0016] Preferably, the centering bracket 2 is provided with a slide rail 20 for sliding the two centering slide plates 3, and the cylinder is a side cylinder 21 fixed to the two side walls of the centering bracket 2 and arranged facing each other. The driving end of the side cylinder 21 drives the centering slide plate 3 to slide along the slide rail 20.

[0017] In the above structure, the bottom of the embracing slide plate 3 is fixed with a slider corresponding to the slide rail 20, and a fixed side plate is provided on one side of the embracing slide plate 3 for the side cylinder 21 to push it. It is worth mentioning that in order to reduce the cylinder length while still meeting the requirement of sufficient sliding range, a cross method is adopted, that is, the left side cylinder pushes the right embracing slide plate 3.

[0018] Preferably, a synchronous seat plate 5 is fixed in the middle of the centering bracket 2, and a synchronous gear 50 is rotatably connected in the middle of the synchronous seat plate 5. The bottom of the two centering slide plates 3 are respectively fixed with racks 32, and the two racks 32 are arranged facing each other, and both racks 32 mesh with the synchronous gear 50.

[0019] Preferably, a rack stop 51 is fixed on the synchronous seat plate 5 and is arranged facing each other. The rack stop 51 is provided with a guide groove 52 for the rack 32 to be embedded in the side wall.

[0020] In the above structure, the synchronous seat plate 5 is fixed to both sides of the centering bracket 2 by means of two bolts. When the centering slide plates 3 on both sides move, in order to achieve the effect of synchronization, toothed racks with facing tooth surfaces are set at the bottom of the two slide plates, which are matched with the meshing synchronous gears, so that the two centering slide plates 3 can move towards each other or away from each other.

[0021] Preferably, the tire support plate 4 is provided with a plurality of universal balls 40. The universal balls are heavy-duty bearings, which not only provide good support for large-sized tires, but also reduce wear on the tire shoulder area, and make it easier for the centering roller 31 to drive the tire to move.

[0022] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A centering device for off-highway wheel tires, comprising an electric conveyor line (1), the electric conveyor line including a plurality of parallel conveyor rollers (11) disposed on a conveyor frame (10), characterized in that, The conveyor frame (10) is fixed with longitudinally arranged lifting cylinders (12) on both the front and rear sides. A centering bracket (2) is fixed between the driving ends of the two lifting cylinders (12). The centering bracket (2) is provided with centering slide plates (3) that are driven by cylinders to slide in opposite directions on both sides. Both centering slide plates (3) are provided with longitudinally arranged centering short rods (30). A centering roller (31) is rotatably installed on the top of the centering short rods (30). Two tire support plates (4) are fixed on the centering bracket (2) along the length direction of the conveying rollers. When the tire is conveyed to the predetermined position above the centering bracket (2), the lifting cylinder (12) drives the centering bracket (2) and the tire support plates (4) to move upward. The centering short rod (30) moves upward from the gap between the adjacent conveying rollers (11) and extends into the toe of the tire, thereby realizing the measurement of the tire size.

2. The centering device for off-road wheel tires according to claim 1, characterized in that, The centering bracket (2) is provided with a slide rail (20) for sliding the two centering slide plates (3). The cylinder is a side cylinder (21) fixed to the two side walls of the centering bracket (2) and arranged facing each other. The driving end of the side cylinder (21) drives the centering slide plate (3) to slide along the slide rail (20).

3. The centering device for off-road wheel tires according to claim 2, characterized in that, The centering bracket (2) is fixed with a synchronous seat plate (5) in the middle, and a synchronous gear (50) is rotatably connected to the middle of the synchronous seat plate (5). The bottom of the two centering slide plates (3) are respectively fixed with racks (32), and the two racks (32) are arranged facing each other, and both racks (32) mesh with the synchronous gear (50).

4. The centering device for off-road wheel tires according to claim 3, characterized in that, The synchronous seat plate (5) is fixed with a rack stop block (51) arranged in opposite directions, and the rack stop block (51) is provided with a guide groove (52) for the rack (32) to be embedded in the side wall.

5. The centering device for off-road wheel tires according to claim 1, characterized in that, The support plate (4) is provided with several universal balls (40).

Images