Tire tightening device

Abstract

The utility model relates to the technical field of tightening devices, in particular to a tire tightening device which comprises a machine frame, a tightening unit and a plurality of counter-force assemblies, the tightening unit and the counter-force assemblies are all arranged on the machine frame, the distances from the counter-force assemblies to the tightening unit are not equal, and the counter-force assemblies are arranged on the machine frame. Each counter-force assembly comprises an elastic assembly and a counter-force sleeve which are coaxially arranged, and the two ends of each elastic assembly are connected with the rack and the corresponding counter-force sleeve respectively. According to the utility model, a plurality of counter-force assemblies with unequal distances to the tightening unit are arranged, the counter-force assemblies comprise the elastic assemblies, and the use of the counter-force sleeves is correspondingly switched by compressing the elastic assemblies, so that the variable pitch function can be realized corresponding to the diameter change caused by fasteners with different reference circles; therefore, tire fasteners of various vehicle types can be tightened, and the device is simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of tightening devices, and more specifically, to a tire tightening device. Background Art

[0002] The assembly of automobile tires is an important link in the general assembly process. The quality of tire assembly is related to the driving safety of the automobile. Generally, a high-precision electric tightening shaft is used in combination with a mechanical structure for assembly to ensure the assembly torque of fasteners. In actual production, factories with high production rhythm and high automation rate generally use robot assembly or semi-automatic mechanisms for assembly. The common point of these two methods is that they both adopt the form of a combination of multiple tightening shafts. For workshops with low production rhythm and low requirements for automation rate, this method has too high input costs, and the robot method occupies more workstations.

[0003] Usually, in workshops with low production rhythm and low requirements for automation rate, in order to reduce costs and reduce the occupied workstations, a single tightening shaft is directly used to tighten the tires. At the same time, in order to overcome the reaction force generated during the tightening process, a single tightening shaft with a reaction force component is usually used to tighten the tires. However, there are some differences in the diameters of the concentric circles where the tire fasteners of different platform models are distributed. The existing single tightening shaft with a reaction force component cannot tighten the tire fasteners of multiple vehicle models. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiency that the prior art cannot tighten the tire fasteners of multiple vehicle models, and provide a tire tightening device that can tighten the tire fasteners of multiple vehicle models.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] Provide a tire tightening device, including a frame and a tightening unit for tightening fasteners. The tightening unit is arranged on the frame. It is characterized in that it further includes a plurality of reaction force components. The plurality of reaction force components are arranged on the frame, and the distances from the plurality of reaction force components to the tightening unit are all not equal. The plurality of reaction force components each include an elastic component and a reaction force sleeve arranged coaxially. Two ends of the elastic component are respectively connected to the frame and the reaction force sleeve.

[0007] The tire tightening device of the present utility model first pre-assembles the tire on the vehicle, aligns the tightening unit with the fastener to be tightened. The fastener can be a bolt on the tire. Select a reaction force component with a suitable pitch circle, align the reaction force sleeve on the reaction force component with the nearest fastener, that is, the bolt adjacent to the bolt to be tightened. The reaction force sleeves on the remaining reaction force components do not interfere with the tightening process of the fastener through the compression elastic component. Start the tightening unit to tighten the fastener to be tightened. When the tightening unit performs the tightening operation, the reaction force component does not rotate, achieving the function of overcoming the reaction force. After completion, repeat the above operation to tighten all the remaining fasteners of the tire. When it is necessary to tighten the fasteners distributed on different concentric circle diameters, the use of the reaction force sleeve can be correspondingly switched by compressing the elastic component, which can correspond to the diameter change caused by the fasteners on different pitch circles, realizing the variable pitch function, so that the tire fasteners of various vehicle models can be tightened. The device has a simple structure and low cost.

[0008] Further, the elastic component includes a telescopic sleeve and an elastic member. The telescopic sleeve is arranged on the frame, the reaction force sleeve is slidably arranged in the telescopic sleeve, and two ends of the elastic member are respectively connected with the telescopic sleeve and the reaction force sleeve. By arranging the telescopic sleeve to guide the axial movement of the reaction force sleeve, the axial movement of the reaction force sleeve is made more stable.

[0009] Further, the elastic component further includes a spring pin and a reaction force rod. The spring pin is arranged on the telescopic sleeve, the reaction force rod is slidably connected with the telescopic sleeve, two ends of the reaction force rod are respectively connected with the elastic member and the reaction force sleeve, and a pin hole for the spring pin to insert is arranged on the reaction force rod. By inserting the spring pin into the pin hole on the reaction force rod, the reaction force rod can be fixed to realize the contraction of the reaction force sleeve. When the spring pin is operated to withdraw from the pin hole on the reaction force rod, the reaction force sleeve will immediately extend, which is more convenient for tightening the tire fasteners of various vehicle models.

[0010] Further, it further includes a rotating component. The rotating component is rotatably connected with the frame, the rotating component is coaxially arranged with the tightening unit, and the tightening unit and multiple reaction force components are all arranged on the rotating component. Through the rotation of the rotating component, the reaction force component is driven to rotate. After the tightening unit is matched with the fastener to be tightened, multiple reaction force components are rotated simultaneously, which is convenient for matching the appropriate reaction force component with the nearest fastener.

[0011] Furthermore, the rotating assembly includes a rotating disk and a reaction plate. The rotating disk is rotatably mounted on the frame. The tightening unit and the reaction plate are both mounted on the rotating disk. Multiple reaction assemblies are mounted on the reaction plate. The reaction plate is provided with a clearance hole for circumventing the tightening unit. The provision of the reaction plate facilitates removal of the multiple reaction assemblies from the rotating disk. When tightening fasteners at greater spacings is required, the reaction plate can be directly replaced, thereby expanding the scope of application of the device.

[0012] Furthermore, the tightening unit includes a cable gun, a fixed cylinder, a connecting rod, a tightening sleeve, and a telescopic member. The cable gun and the fixed cylinder are both mounted on the frame. The connecting rod is rotatably mounted within the fixed cylinder. The output end of the cable gun is connected to the connecting rod. The tightening sleeve is slidably connected to the connecting rod. The ends of the telescopic member are respectively connected to the tightening sleeve and the connecting rod. During the tightening operation, the cable gun is activated to rotate the connecting rod, which in turn rotates the tightening sleeve, thereby tightening the fastener.

[0013] Furthermore, the tightening unit further comprises a tightening control handle, which is arranged on the frame and electrically connected to the cable gun. The tightening control handle is provided to facilitate the control of the cable gun during operation.

[0014] Furthermore, the plurality of reaction force components are evenly distributed around the circumference of the tightening unit, so that the plurality of reaction force components are staggered with each other, making it easier to replace the reaction force components.

[0015] Furthermore, each of the reaction force assemblies further includes a clamping plate, the ends of which are connected to the elastic assembly and the tightening unit, respectively. The clamping plate supports the reaction force assembly, preventing it from tilting during use, ensuring that the axis of the reaction force assembly and the tightening unit are always parallel, thereby extending the service life of the device.

[0016] Furthermore, the frame is provided with a connecting flange and a material box. The setting of the connecting flange facilitates the connection of the device with other auxiliary mechanisms; the setting of the material box facilitates the placement of fasteners in the material box to avoid the loss of the fasteners.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. A tire tightening device of the present invention is provided with a plurality of reaction force components with unequal distances from the tightening unit. The reaction force components include an elastic component. By compressing the elastic component and switching the use of the reaction force sleeve, the device can correspond to the diameter change caused by fasteners with different pitch circles, thereby realizing a variable distance function, thereby being able to tighten tire fasteners of various models. The device has a simple structure and low cost.

[0019] 2. A tire tightening device of the present utility model can fix the reaction rod by inserting a spring pin into the pin hole on the reaction rod, realizing the contraction of the reaction sleeve. When the spring pin is withdrawn from the pin hole on the reaction rod, the reaction sleeve will immediately extend, which is more convenient for tightening the tire fasteners of various vehicle models.

[0020] 3. A tire tightening device of the present utility model, by setting a rotating assembly, after the tightening unit is matched with the fastener to be tightened, multiple reaction components are rotated simultaneously, which is convenient for matching the appropriate reaction component with the nearby fastener; by setting a reaction plate, it is convenient to disassemble all the reaction components from the rotating disk. When it is necessary to tighten the fasteners with more spacings, the reaction plate can also be directly replaced to expand the application range of the device. Description of the Drawings

[0021] Figure 1 is the structural schematic diagram of the tire tightening device from the first perspective;

[0022] Figure 2 is the structural schematic diagram of the reaction component in the tire tightening device;

[0023] Figure 3 is the structural schematic diagram of the tire tightening device from the second perspective.

[0024] In the drawings: 1. Frame; 2. Tightening unit; 201. Cable gun; 202. Fixed cylinder; 203. Connecting rod; 204. Tightening sleeve; 205. Tightening control handle; 3. Reaction component; 301. Elastic component; 311. Telescopic sleeve; 312. Elastic member; 313. Spring pin; 314. Reaction rod; 302. Reaction sleeve; 303. Clamping plate; 4. Rotating assembly; 401. Rotating disk; 402. Reaction plate; 421. Avoidance hole; 403. Bearing; 404. Operating armrest; 5. Connecting flange; 6. Magazine. Detailed Embodiments

[0025] The present utility model will be further described below in conjunction with the detailed embodiments. Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation of this patent; in order to better illustrate the embodiments of the present utility model, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0026] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the attached drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] Embodiment 1

[0028] This embodiment is the first embodiment of a tire tightening device. As Figure 1 shown, it includes a frame 1, a tightening unit 2 and a plurality of reaction force components 3. The tightening unit 2 and the plurality of reaction force components 3 are both arranged on the frame 1. The first axis of the tightening unit 2 is parallel to the second axis of the plurality of reaction force components 3. It should be noted that for those skilled in the art, on the premise of being able to overcome the reaction force, adjusting the parallel 0° to 1°, -1°, etc. should all be within the protection scope of the present invention. The distances from the plurality of reaction force components 3 to the tightening unit 2 are not equal, that is, the plurality of reaction force components 3 are all located on different pitch circles with the tightening unit 2 as the center. The plurality of reaction force components 3 each include an elastic component 301 and a reaction force sleeve 302 arranged coaxially. The two ends of the elastic component 301 are respectively connected to the frame 1 and the reaction force sleeve 302.

[0029] The working principle of the tire tightening device in this embodiment is as follows:

[0030] First, pre-install the tire on the vehicle, run the vehicle to the tire tightening station, align the tightening unit 2 with the fastener to be tightened. The fastener can be the bolt on the tire. Select the reaction force component 3 on the appropriate pitch circle, align the reaction force sleeve 302 on this reaction force component 3 with the nearest fastener, that is, the bolt adjacent to the bolt to be tightened. The reaction force sleeves 302 on the remaining reaction force components 3 do not interfere with the tightening process of the fastener by compressing the elastic component 301. Start the tightening unit 2 to tighten the fastener to be tightened. When the tightening unit 2 performs the tightening operation, the reaction force component 3 does not rotate, achieving the function of overcoming the reaction force. After the tightening is completed, the employee moves the device out and repeats the above operations to tighten all the remaining fasteners of the tire. When it is necessary to change the vehicle model of the tire for the tightening operation, that is, when it is necessary to tighten the fasteners distributed on different concentric circle diameters, by compressing the elastic component 301 to correspondingly switch the use of the reaction force sleeve 302, it can correspond to the diameter change caused by the fasteners on different pitch circles, realizing the variable pitch function, so that the tire fasteners of multiple vehicle models can be tightened. The structure of this device is simple and the cost is low.

[0031] Embodiment 2

[0032] A tire tightening device proposed in this embodiment, on the basis of Embodiment 1, in this embodiment, as Figure 1 and Figure 2 shown, the elastic component 301 includes a telescopic sleeve 311 and an elastic member 312. The telescopic sleeve 311 is provided on the frame 1, the reaction force sleeve 302 is slidably provided in the telescopic sleeve 311, and both ends of the elastic member 312 are respectively connected to the telescopic sleeve 311 and the reaction force sleeve 302. In this embodiment, the elastic member 312 is preferably a return spring. By providing the telescopic sleeve 311 to guide the axial movement of the reaction force sleeve 302, when the elastic member 312 is compressed, the reaction force sleeve 302 slides in the telescopic sleeve 311, making the axial movement of the reaction force sleeve 302 more stable.

[0033] The elastic component 301 further includes a spring pin 313 and a reaction force rod 314. The spring pin 313 is provided on the telescopic sleeve 311. The reaction force rod 314 is slidably connected to the telescopic sleeve 311. Both ends of the reaction force rod 314 are respectively connected to the elastic member 312 and the reaction force sleeve 302. The reaction force sleeve 302 is installed on the reaction force rod 314 with a square head through a pin. A pin hole for inserting the spring pin 313 is provided on the reaction force rod 314. By inserting the spring pin 313 into the pin hole on the reaction force rod 314, the reaction force rod 314 can be fixed, realizing the contraction of the reaction force sleeve 302. After selecting a suitable reaction force component 3, the remaining reaction force sleeves 302 are all contracted to avoid interference with the tightening operation, making it more convenient to tighten the tire fasteners of multiple vehicle models. When the spring pin 313 is withdrawn from the pin hole on the reaction force rod 314, the reaction force sleeve 302 is reset under the action of the elastic member 312. At the same time, by providing the reaction force rod 314. The reaction force rod 314 is detachably connected to the reaction force sleeve 302. By replacing the reaction force sleeve 302 with different models, it is possible to cooperate with fasteners of different sizes.

[0034] Embodiment 3

[0035] A tire tightening device proposed in this embodiment, on the basis of Embodiment 1, in this embodiment, as Figure 1 shown, further includes a rotating component 4. The rotating component 4 is rotatably connected to the frame 1. The rotating component 4 is coaxially arranged with the tightening unit 2. The tightening unit 2 and multiple reaction force components 3 are all provided on the rotating component 4. By rotating the rotating component 4, the reaction force components 3 are driven to rotate. After the tightening unit 2 is matched with the fastener to be tightened, rotating multiple reaction force components 3 at the same time facilitates matching the appropriate reaction force component 3 with the nearby fastener.

[0036] As Figure 3As shown, the rotating assembly 4 includes a rotating disk 401 and a reaction plate 402. The rotating disk 401 is rotatably arranged on the frame 1 through a bearing 403. In this embodiment, the bearing 403 is selected as a crossed roller bearing. The rotating disk 401 is connected to the inner ring of the crossed roller bearing by bolts, and the frame 1 is connected to the outer ring of the crossed roller bearing by bolts. The tightening unit 2 and the reaction plate 402 are both arranged on the rotating disk 401, and multiple reaction components 3 are all arranged on the reaction plate 402. An avoidance hole 421 for avoiding the tightening unit 2 is provided on the reaction plate 402. By providing the reaction plate 402, it is convenient to disassemble multiple reaction components 3 from the rotating disk 401. When it is necessary to tighten fasteners with more spacings, the reaction plate 402 can also be directly replaced to expand the applicable range of this device.

[0037] An operating armrest 404 is provided on the rotating disk 401. The operating armrest 404 is installed around the rotating disk 401 through armrest fixing rods. Three armrest fixing rods are designed and are arranged at 90° to each other. The operating armrest 404 is arranged in a large arc shape, which is convenient for employees to rotate and operate. By rotating the operating armrest 404, the rotating disk 401 and the tightening unit 2 and the reaction components 3 connected to the rotating disk 401 can be driven to rotate together around the axis of the tightening unit.

[0038] Embodiment Four

[0039] A tire tightening device proposed in this embodiment, on the basis of Embodiment One, in this embodiment, as Figure 2 shown, the tightening unit 2 includes a cable gun 201, a fixed cylinder 202, a connecting rod 203, a tightening sleeve 204 and a telescopic member. The cable gun 201 and the fixed cylinder 202 are both arranged on the frame 1. The connecting rod 203 is rotatably arranged in the fixed cylinder 202. The output end of the cable gun 201 is connected to the connecting rod 203. The tightening sleeve 204 is slidably connected to the connecting rod 203. The two ends of the telescopic member are respectively connected to the tightening sleeve 204 and the connecting rod 203. In this embodiment, the telescopic member is preferably a telescopic spring. When performing the tightening operation, the cable gun 201 is started to drive the connecting rod 203 to rotate, and the connecting rod 203 drives the tightening sleeve 204 to rotate, thereby tightening the fastener.

[0040] The tightening unit 2 further includes a tightening control handle 205. The tightening control handle 205 is arranged on the frame 1. The tightening control handle 205 is installed at the end of the frame 1, which is convenient for employees to operate. The tightening control handle 205 is electrically connected to the cable gun 201. By providing the tightening control handle 205, it is convenient for employees to control the cable gun 201 to perform operations during work.

[0041] Embodiment Five

[0042] A tire tightening device proposed in this embodiment, on the basis of any one of Embodiments One to Four, in this embodiment, as Figure 3As shown, a plurality of reaction force components 3 are evenly distributed around the tightening unit 2 in a circumferential manner. The plurality of reaction force components 3 are staggered from each other so that the plurality of reaction force components 3 do not interfere with each other, which is more convenient for replacing the reaction force components 3.

[0043] As Figure 2 shown, each of the plurality of reaction force components 3 further includes a clamping plate 303. The two ends of the clamping plate 303 are respectively connected to the elastic component 301 and the tightening unit 2. There is a circular mounting hole at each of the two ends of the clamping plate 303. The circular hole at one end is fixed on the telescopic sleeve 311, and the circular hole at the other end is fixed on the fixed cylinder 202. The distance between the two centers of the clamping plate 303 is the distance between the reaction force component 3 and the tightening unit 2. The clamping plate 303 is located at one end of the elastic component 301 close to the reaction force sleeve 302, and supports the middle part of the reaction force component 3 to prevent the reaction force component 3 from tilting during use, so that the reaction force component 3 is always parallel to the axis of the tightening unit 2, and the service life of the device is prolonged.

[0044] As Figure 3 shown, a connecting flange 5 and a material box 6 are provided on the frame 1. The frame 1 is mainly composed of a mounting plate and a robotic arm. One side of the mounting plate is fixedly connected to the outer ring of the crossed roller bearing to ensure that the inner ring of the bearing and the mechanism connected thereto can rotate normally. The robotic arm is vertically arranged on the other side of the mounting plate. The connecting flange 5 is connected to the middle of the robotic arm, and a mounting interface is reserved for installing an auxiliary arm for hanging, which is convenient for connecting this device to other auxiliary mechanisms, such as fixing it on a steel structure. The setting of the material box 6 facilitates placing the fasteners in the material box 6 to avoid loss of the fasteners.

[0045] In the specific content of the above specific embodiments, the technical features can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope recorded in this specification.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A tire tightening device, comprising a frame (1) and a tightening unit (2) for tightening a fastener, the tightening unit (2) being provided on the frame (1), characterized in that, It further includes a plurality of reaction force components (3). The plurality of reaction force components (3) are arranged on the frame (1), and the distances from the plurality of reaction force components (3) to the tightening unit (2) are all unequal. Each of the plurality of reaction force components (3) includes an elastic component (301) and a reaction force sleeve (302) arranged coaxially. Two ends of the elastic component (301) are respectively connected to the frame (1) and the reaction force sleeve (302).

2. The tire tightening device according to claim 1, wherein, The elastic component (301) includes a telescopic sleeve (311) and an elastic member (312). The telescopic sleeve (311) is arranged on the frame (1), the reaction force sleeve (302) is slidably arranged in the telescopic sleeve (311), and two ends of the elastic member (312) are respectively connected to the telescopic sleeve (311) and the reaction force sleeve (302).

3. The tire tightening device according to claim 2, wherein, The elastic component (301) further includes a spring pin (313) and a reaction force rod (314). The spring pin (313) is arranged on the telescopic sleeve (311), the reaction force rod (314) is slidably connected to the telescopic sleeve (311), two ends of the reaction force rod (314) are respectively connected to the elastic member (312) and the reaction force sleeve (302), and a pin hole for inserting the spring pin (313) is arranged on the reaction force rod (314).

4. The tire tightening device according to claim 1, wherein, It further includes a rotating component (4). The rotating component (4) is rotatably connected to the frame (1), the rotating component (4) is arranged coaxially with the tightening unit (2), and the tightening unit (2) and the plurality of reaction force components (3) are all arranged on the rotating component (4).

5. The tire tightening device according to claim 4, characterized in that, The rotating component (4) includes a rotating disc (401) and a reaction force plate (402). The rotating disc (401) is rotatably arranged on the frame (1), the tightening unit (2) and the reaction force plate (402) are both arranged on the rotating disc (401), the plurality of reaction force components (3) are all arranged on the reaction force plate (402), and an avoidance hole (421) for avoiding the tightening unit (2) is arranged on the reaction force plate (402).

6. The tire tightening device according to claim 1, characterized in that, The tightening unit (2) includes a cable gun (201), a fixed cylinder (202), a connecting rod (203), a tightening sleeve (204) and a telescopic member. The cable gun (201) and the fixed cylinder (202) are both arranged on the frame (1), the connecting rod (203) is rotatably arranged in the fixed cylinder (202), the output end of the cable gun (201) is connected to the connecting rod (203), the tightening sleeve (204) is slidably connected to the connecting rod (203), and two ends of the telescopic member are respectively connected to the tightening sleeve (204) and the connecting rod (203).

7. The tire tightening device according to claim 6, characterized in that, The tightening unit (2) further includes a tightening control handle (205). The tightening control handle (205) is arranged on the frame (1), and the tightening control handle (205) is electrically connected to the cable gun (201).

8. The tire tightening device according to any one of claims 1 to 7, characterized in that, The plurality of reaction force components (3) are circumferentially and evenly distributed around the tightening unit (2).

9. The tire tightening device according to any one of claims 1 to 7, characterized in that, Each of the plurality of reaction force components (3) further includes a clamping plate (303), and two ends of the clamping plate (303) are respectively connected to the elastic component (301) and the tightening unit (2).

10. The tire tightening device according to any one of claims 1 to 7, characterized in that, A connecting flange (5) and a cartridge (6) are provided on the frame (1).

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