Tightening device

Abstract

The invention discloses a tightening device and relates to the technical field of tightening devices.The tightening device is used for mounting a lower swing arm of a brake disc and comprises a stand column, a balancer, a rotating assembly, a swing arm, a sliding assembly, a telescopic assembly, a tightening assembly and a limiting assembly, the rotating assembly is connected with the stand column, and the swing arm is connected with the rotating end of the rotating assembly; the sliding assembly is installed on the swing arm in a sliding mode, the balancer and the telescopic assembly are both connected with the sliding assembly, the tightening assembly is rotationally connected with the extending end of the telescopic assembly, a drag hook of the balancer is rotationally connected with the tightening assembly, and the limiting assembly comprises a carbon arm and an installation component. The two ends of the carbon arm of the limiting assembly are rotationally connected with the stand column and the tightening assembly respectively, the movement range of the tightening assembly is forcibly restrained, excessive shaking is prevented, and therefore the operation difficulty of tightening operation is lowered, and the time needed by the tightening operation is shortened.

Description

Technical Field

[0001] This invention relates to the field of tightening device technology, and in particular to a tightening device. Background Technology

[0002] The brake disc lower control arm is a core load-bearing component in the independent suspension system of a car and an important part of the chassis suspension system. It is a rigid structural component that connects the wheel steering knuckle to the body / subframe.

[0003] Currently, for brake disc lower control arm installation, many similar projects use Atlas Copco or Mato Harvest tightening guns for installation. The work location for this project is next to the parts removal port. Since the tightening gun is not used as equipment, it does not have a specific installation position. A column is often used in conjunction with a balancer to fix the position of the tightening gun. However, the balancer is only used to fix the tightening gun when it is not in use. When working, the tightening gun needs to be pulled down before the bolts are aligned and tightened. Because the tightening gun has a certain weight, the pull force of the balancer must be large to lift the tightening gun. When the tightening gun is pulled down by hand, the upward pull of the balancer creates mutual repulsion between the upward and downward forces, and the stability of holding the gun is insufficient, making it easy to shake and swing. Alignment is difficult during operation, increasing the operation time.

[0004] Therefore, it is necessary to provide a new tightening device to solve the above-mentioned technical problems. Summary of the Invention

[0005] The main objective of this invention is to provide a tightening device that aims to improve the technical problem of difficult and time-consuming tightening of the lower control arm of the brake disc in the prior art.

[0006] To achieve the above objectives, the present invention provides a tightening device for installing a brake disc lower control arm, comprising: Columns; Balancer; A rotating assembly, which is connected to the column; A swing arm, which is connected to the rotating end of the rotating assembly; A sliding assembly, which is slidably mounted on the swing arm; The telescopic assembly, the balancer, and the telescopic assembly are all connected to the sliding assembly; A tightening assembly is rotatably connected to the extended end of the telescopic assembly, and the pull hook of the balancer is rotatably connected to the tightening assembly; A limiting assembly includes a carbon arm and a mounting component. The mounting component is mounted on the column. One end of the carbon arm is rotatably connected to the mounting component, and the other end of the carbon arm is rotatably connected to the tightening assembly.

[0007] In one embodiment, the telescopic assembly includes a tubular guide shaft and a linear bearing. The linear bearing is slidably mounted on the tubular guide shaft, which is arranged vertically and connected to the sliding assembly. The linear bearing is rotatably connected to the tightening assembly.

[0008] In one embodiment, the tightening assembly includes a fixing block and a tightening gun, the tightening gun is mounted on the fixing block, the fixing block is rotatably connected to the linear bearing, a lifting ring is formed on the fixing block, and the pull hook of the balancer is rotatably connected to the lifting ring.

[0009] In one embodiment, the carbon arm has two spaced-apart protrusions with a first mounting hole on each protrusion, a second mounting hole on the fixing block, a groove between the two protrusions, the fixing block being disposed in the groove, a third mounting hole on the linear bearing, and the tightening device further includes a fastener that passes through one of the first mounting holes and extends out from the other of the first mounting holes. The fixing block is mounted to the fastener through the second mounting hole, and the linear bearing is mounted to the end of the fastener that extends out of the first mounting hole through the third mounting hole.

[0010] In one embodiment, the mounting component includes a mounting plate and a connector. The mounting plate is mounted on the column and has a first rotating hole. The connector has a second rotating hole. The tightening device further includes a first rotating shaft and a second rotating shaft. The connector is rotatably connected to the carbon arm via the first rotating shaft. The second rotating shaft passes through the second rotating hole and the first rotating hole in sequence. The second rotating shaft is arranged in a vertical direction, and the first rotating shaft and the second rotating shaft are arranged perpendicular to each other.

[0011] In one embodiment, the top of the fixing block is provided with a linear handle, and the side wall of the fixing block is provided with a fish-shaped grip.

[0012] In one embodiment, the rotating assembly includes a first fixed plate, a second fixed plate, and a rotating block. The first fixed plate and the second fixed plate are both mounted on the column and are spaced apart in the vertical direction. The two ends of the rotating block are rotatably connected to the first fixed plate and the second fixed plate, respectively, and the swing arm is connected to the rotating block.

[0013] In one embodiment, the tightening device further includes a fixing member, a connecting seat, and a rubber shock absorber. The fixing member is telescopically mounted on the connecting seat, and one end of the fixing member is connected to the rubber shock absorber.

[0014] In one embodiment, the tightening device further includes a detection component and a controller. The detection component includes a sensor bracket, which is mounted on the column. The sensor bracket has two spaced-apart mounting positions, and each mounting position is provided with a proximity switch. The proximity switch is connected to the tightening gun via the controller and is used to locate the bolts on the brake disc lower control arm.

[0015] In one embodiment, the tightening device further includes a first screw, a second screw, and an adjusting rod. The adjusting rod has threaded holes at both ends. One end of the first screw and the second screw are respectively threaded to the two threaded holes. The other end of the first screw is rotatably connected to the rotating assembly. The other end of the second screw is rotatably connected to a sliding plate, which is slidably mounted on the top of the swing arm.

[0016] In the above scheme, the tightening device is used for the installation of the brake disc lower control arm. The tightening device includes a column, a balancer, a rotating assembly, a control arm, a sliding assembly, a telescopic assembly, a tightening assembly, and a limiting assembly. The rotating assembly is connected to the column, the control arm is connected to the rotating end of the rotating assembly, the sliding assembly is slidably installed on the control arm, the balancer and the telescopic assembly are both connected to the sliding assembly, the tightening assembly is rotatably connected to the extended end of the telescopic assembly, the balancer's hook is rotatably connected to the tightening assembly, and the limiting assembly includes a carbon arm and a mounting component. The mounting component is installed on the column, one end of the carbon arm is rotatably connected to the mounting component, and the other end of the carbon arm is rotatably connected to the tightening assembly. Specifically, the column serves as the core support for the entire device, and is securely installed at the designated location in the work station, such as on the ground or a dedicated bracket, using bolts or welding. This ensures the column is vertical and its load-bearing capacity meets requirements, providing reliable foundation support for subsequent components. Next, the fixed end of the rotating component is tightly connected to the top of the column or a pre-set connection point. The rotating end of the component is checked to ensure it rotates freely without jamming or abnormal noise, guaranteeing the normal angle adjustment function of the swing arm. Then, one end of the swing arm is firmly fixed to the rotating end of the rotating component using pins or bearings, ensuring the connection strength between the swing arm and the rotating component. Simultaneously, it is verified that the swing arm rotates smoothly with the rotating component, covering the required working range. The sliding component is then embedded into the guide rail or groove of the swing arm, and its position is adjusted to allow it to slide smoothly along the length of the swing arm. Afterwards, The fixed end of the balancer is connected to the top or side of the sliding component. Then, the fixed end of the telescopic component is installed at the corresponding position of the sliding component, ensuring reliable connection between the two and the sliding component, and that the extension direction of the telescopic component is vertical. A rotating connector is used to connect one end of the tightening component to the extended end of the telescopic component, ensuring that the tightening component can rotate flexibly relative to the telescopic component. Simultaneously, the balancer's hook is connected to the preset lifting point of the tightening component via a rotating structure, allowing the balancer to provide vertical tensile support to the tightening component. Finally, the mounting component of the limiting component is fixed at a suitable height on the column. Then, one end of the carbon arm is connected to the mounting component via a rotating structure, and the other end of the carbon arm is rotatably connected to the side or bottom of the tightening component, completing the assembly of the entire device. Finally, the firmness of all connection points and the flexibility of the moving parts are checked.After the device installation is completed, the operator confirms before starting that all components are properly connected, that there is no jamming in moving parts such as the rotating, sliding, and telescopic components, that the balancer tension is appropriate, and that the carbon arm of the limit component rotates flexibly. The operator adjusts the angle of the swing arm by rotating the component to align it with the installation position of the lower swing arm of the brake disc, then pushes the sliding component along the swing arm to move the tightening component close to the work area. Next, the operator extends or retracts the telescopic component, bringing the tightening component closer to the bolt to be tightened. The operator holds the tightening component and aligns the tightening head with the brake disc. When tightening the bolts of the lower control arm, the tightening procedure is initiated. The tightening head moves to lock the bolts. During the tightening process, the tension of the balancer offsets part of the self-weight of the tightening component, reducing the operator's effort. The carbon arm of the limiting component restricts excessive swaying of the tightening component, ensuring the accuracy of the tightening direction and guaranteeing complete contact between the tightening head and the bolt. After tightening, the telescopic component is retracted or extended, moving the tightening component away from the bolt position. Then, the sliding and rotating components are used to reset the control arm and tightening component to their initial positions, ready for the installation of the next brake disc lower control arm. This invention connects the balancer hook to the rotating structure of the tightening component, allowing the balancer's tension direction to match the operating direction. This avoids the mutual repulsion between manual downward pulling and the balancer's upward pulling force, reducing operating resistance. The carbon arm of the limiting component is rotatably connected to the column and the tightening component at both ends, forcibly constraining the movement range of the tightening component to prevent excessive swaying, thereby reducing the difficulty and time required for tightening operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of an embodiment of the tightening device provided by the present invention from one perspective; Figure 2 for Figure 1 Enlarged view at point A; Figure 3 This is a schematic diagram of the structure of another embodiment of the tightening device provided by the present invention; Figure 4 for Figure 3 Enlarged view at point B; Figure 5 A top view of an embodiment of the tightening device provided by the present invention; Figure 6 for Figure 5 Enlarged view at point C.

[0019] Explanation of icon numbers: 100. Tightening device; 1. Column; 2. Balancer; 21. Hook; 3. Rotating assembly; 31. First fixing plate; 32. Second fixing plate; 33. Rotating block; 4. Swing arm; 5. Sliding assembly; 6. Telescopic assembly; 61. Tubular guide shaft; 62. Linear bearing; 7. Tightening assembly; 71. Fixing block; 711. Lifting ring; 712. Linear handle; 713. Fish-shaped grip; 72. Tightening gun; 8. Limiting assembly; 81. Carbon arm; 811. Protrusion; 811a. First mounting hole; 812. Groove; 82. Mounting component 821. Mounting plate; 822. Connector; 9. Fastener; 100a. First rotating shaft; 100b. Second rotating shaft; 100c. Fixing component; 100d. Connecting seat; 100e. Rubber shock absorber; 11. Detection component; 100f. Controller; 100g. Sensor bracket; 100h. Mounting position; 100i. Proximity switch; 100j. Elastic element; 100k. Magnetic base; 100m. Telescopic shaft; 100n. First screw; 100l. Second screw; 100o. Adjusting rod; 100p. Slide plate.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0024] To achieve the above objectives, please refer to Figures 1 to 4This invention proposes a tightening device 100 for installing a brake disc lower control arm 4. The tightening device 100 includes a column 1, a balancer 2, a rotating assembly 3, a control arm 4, a sliding assembly 5, a telescopic assembly 6, a tightening assembly 7, and a limiting assembly 8. The rotating assembly 3 is connected to the column 1, the control arm 4 is connected to the rotating end of the rotating assembly 3, the sliding assembly 5 is slidably installed on the control arm 4, the balancer 2 and the telescopic assembly 6 are both connected to the sliding assembly 5, the tightening assembly 7 is rotatably connected to the extended end of the telescopic assembly 6, the hook 21 of the balancer 2 is rotatably connected to the tightening assembly 7, and the limiting assembly 8 includes a carbon arm 81 and a mounting component 82. The mounting component 82 is installed on the column 1, one end of the carbon arm 81 is rotatably connected to the mounting component 82, and the other end of the carbon arm 81 is rotatably connected to the tightening assembly 7. Specifically, the column 1 serves as the core support for the entire device, and is securely installed at a designated location in the work station, such as on the ground or a dedicated bracket, using bolts or welding. This ensures the column 1 is vertical and its load-bearing capacity meets requirements, providing reliable foundation support for subsequent components. Next, the fixed end of the rotating component 3 is tightly connected to the top of the column 1 or a pre-set connection point. The rotating end of the rotating component 3 is checked to ensure it rotates freely without jamming or abnormal noise, guaranteeing the normal angle adjustment function of the swing arm 4. Then, one end of the swing arm 4 is securely fixed to the rotating end of the rotating component 3 using a pin or bearing connector 822, ensuring the connection strength between the swing arm 4 and the rotating component 3. This also verifies whether the swing arm 4 can rotate smoothly with the rotating component 3, covering the required working range. The sliding component 5 is then embedded into the guide rail or groove of the swing arm 4, and its position is adjusted to allow it to slide smoothly along the length of the swing arm 4. Finally, the balancer 2... The fixed end is connected to the top or side of the sliding component 5, and the fixed end of the telescopic component 6 is installed at the corresponding position of the sliding component 5 to ensure reliable connection between the two and the sliding component 5, and the extension direction of the telescopic component 6 is vertical; one end of the tightening component 7 is connected to the extended end of the telescopic component 6 using the rotating connector 822 to ensure that the tightening component 7 can rotate flexibly relative to the telescopic component 6. At the same time, the pull hook 21 of the balancer 2 is connected to the preset lifting point of the tightening component 7 through the rotating structure, so that the balancer 2 can provide vertical tension support for the tightening component 7; finally, the mounting part 82 of the limiting component 8 is fixed at a suitable height position of the column 1, and then one end of the carbon arm 81 is connected to the mounting part 82 through the rotating structure, and the other end of the carbon arm 81 is rotatably connected to the side or bottom of the tightening component 7 to complete the assembly of the entire device. Finally, check the firmness of all connection points and the flexibility of the moving parts.After the device installation is completed, the operator confirms before starting that all components are properly connected, that there is no jamming in moving parts such as rotating component 3, sliding component 5, and telescopic component 6, that the tension of balancer 2 is moderate, and that the carbon arm 81 of limit component 8 rotates flexibly. The operator adjusts the angle of swing arm 4 by rotating component 3, aligning it with the installation position of swing arm 4 under the brake disc. Then, the operator pushes sliding component 5 along swing arm 4 to move tightening component 7 close to the work area. Next, the operator extends or retracts telescopic component 6, bringing tightening component 7 closer to the bolt to be tightened. The operator holds tightening component 7 and aligns the tightening head with the brake disc. For the bolts of the lower control arm 4 of the brake disc, the tightening procedure is started. The tightening head moves to lock the bolts. During the tightening process, the tension of the balancer 2 offsets part of the self-weight of the tightening component 7, reducing the operating effort of the operator. The carbon arm 81 of the limit component 8 restricts the excessive shaking of the tightening component 7, ensuring the accuracy of the tightening direction and ensuring that the tightening head is fully engaged with the bolt. After tightening is completed, the telescopic component 6 is operated to retract or extend, driving the tightening component 7 away from the bolt position. Then, the control arm 4 and the tightening component 7 are reset to the initial position through the sliding component 5 and the rotating component 3, waiting for the installation of the next lower control arm 4 of the brake disc. In this embodiment, the pull hook 21 of the balancer 2 is connected to the rotating structure of the tightening component 7 so that the pulling direction of the balancer 2 is adapted to the operation direction. This avoids the mutual repulsion between the downward pull of the balancer 2 and the upward pull of the balancer 2, thereby reducing the operating resistance. By means of the carbon arm 81 of the limiting component 8, the two ends are respectively rotatably connected to the column 1 and the tightening component 7 to forcibly constrain the movement range of the tightening component 7 and prevent excessive shaking, thereby reducing the difficulty of the tightening operation and reducing the time required for the tightening operation.

[0025] The balancer 2 is intended to provide an upward pulling force to counteract the weight of the tightening component 7. If the hook 21 is fixedly connected, when the operator pulls down or adjusts the angle of the component, the fixed upward pulling force of the balancer 2 will be mutually exclusive with the direction of the human force, with the pulling force going upward and the human force going downward, increasing the combined force of the operation. However, the hook of the balancer 2 is rotatably connected to the tightening component 7, so that the hook 21 can adjust its angle as the tightening component 7 goes down or up, so that the pulling direction of the balancer 2 always matches the direction of the force applied during the operation, avoiding resistance to the human force, and only needing to counteract its own weight, thus greatly reducing the operating resistance. The carbon arm 81 is a rigid rod, and its two ends form a rotating pair with the column 1 and the tightening assembly 7, constraining the fixed length of the connecting rod. Because the length of the carbon arm 81 is fixed, the movement of the tightening assembly 7 is restricted to an arc trajectory with the connection point of the column 1 as the center and the length of the carbon arm 81 as the radius. The rigid constraint prevents it from swaying significantly in the lateral / longitudinal direction. At the same time, the rotating pair retains the flexibility of the assembly to adjust the angle within the trajectory, which ensures both ease of operation and prevents excessive swaying, and ensures the coaxiality of the tightening head and the bolt is stable.

[0026] Please see Figure 1In one embodiment, the telescopic component 6 includes a tubular guide shaft 61 and a linear bearing 62. The linear bearing 62 is slidably mounted on the tubular guide shaft 61, which is vertically oriented and connected to the sliding component 5. The linear bearing 62 is rotatably connected to the tightening component 7. During installation, the tubular guide shaft 61 is vertically fixed to the sliding component 5, and the linear bearing 62 is slidably mounted on it and rotatably connected to the tightening component 7. During operation, the sliding component 5 is adjusted so that the tightening component 7 moves to the target bolt position. Then, the tightening component 7 is gently pulled down manually, and the linear bearing 62 slides smoothly along the vertically oriented tubular guide shaft 61, causing the tightening component 7 to approach the bolt. Through the rotatable connection between the linear bearing 62 and the tightening component 7, the angle of the tightening head is adjusted to accurately align with the bolt. After the tightening operation is completed, the manual force is released, and the pulling force of the balancer 2 causes the linear bearing 62 to rise along the tubular guide shaft 61, causing the tightening component 7 to reset.

[0027] This design avoids the burden of human labor bearing the weight of the components while retaining operational flexibility, significantly reducing the intensity of work and the difficulty of alignment.

[0028] The linear bearing 62 slides along the tubular guide shaft 61 based on rolling friction instead of sliding friction. The linear bearing 62 contains rolling elements such as balls or rollers. When the bearing moves along the tubular guide shaft 61, the rolling elements roll between the inner ring of the bearing and the surface of the guide shaft, significantly reducing frictional resistance and ensuring smooth sliding. The vertical orientation constraint of the tubular guide shaft 61 ensures that the linear bearing 62 moves only in the vertical direction, avoiding lateral deviation. The low resistance characteristics of rolling friction reduce jamming or bumping during lifting and lowering, making the lifting and lowering action of the tightening assembly 7 uniform and stable.

[0029] The vertical sliding of the linear bearing 62 can quickly move the tightening assembly 7 closer to or further away from the bolt position, meeting the height adjustment requirements during operation; at the same time, the rotational connection between the linear bearing 62 and the tightening assembly 7 allows the tightening assembly 7 to flexibly adjust its angle after being raised and lowered to the correct position, accurately aligning with the bolt, which not only ensures the stability of the raising and lowering but also takes into account the flexibility of operation, effectively improving the efficiency and accuracy of the tightening operation.

[0030] The tubular guide shaft 61 serves as a rigid vertical guide rail, providing a precise linear motion path. The linear bearing 62, fitted onto the tubular guide shaft 61, engages with it to achieve a low-friction sliding connection. With this assembly, the telescopic unit can move smoothly along the guide shaft in only the vertical direction, preventing any horizontal deviation. The balancer 2's function is to suspend the tightening gun 72 with tension. However, in traditional structures, the tension of the balancer 2 is prone to tilting due to the shaking or positional changes of the tightening gun 72, leading to uneven force distribution and difficulty in alignment. The engagement of the linear bearing 62 and the tubular guide shaft 61 strictly restricts the telescopic unit to move only along the vertical axis of the guide shaft, forcing the tension of the balancer 2 to be transmitted along the guide shaft. Since the telescopic unit cannot deviate horizontally, the tension of the balancer 2 is completely constrained in the vertical direction, preventing any horizontal component of the tension and ensuring that the tension always acts vertically on the tightening gun 72. When the tension of the balancer 2 is kept vertical, the tightening gun 72 is no longer affected by the horizontal tension, thus avoiding the shaking and swaying of the tightening gun 72 caused by the tilt of the tension. The movement direction of the tightening gun 72 is limited to vertical up and down, which complements the vertical up and down function of the carbon arm 81, further improving the accuracy of alignment and reducing the operation time.

[0031] Please see Figure 1 , Figure 3 and Figure 4 In one embodiment, the tightening assembly 7 includes a fixing block 71 and a tightening gun 72. The tightening gun 72 is mounted on the fixing block 71, which is rotatably connected to the linear bearing 62. A lifting ring 711 is formed on the fixing block 71, and the hook 21 of the balancer 2 is rotatably connected to the lifting ring 711. The rotatable connection between the fixing block 71 and the linear bearing 62 allows the tightening gun 72 to be flexibly adjusted in angle and easily aligned with the bolt. The rotatable connection between the lifting ring 711 on the fixing block 71 and the hook 21 of the balancer 2 allows the pulling direction of the balancer 2 to adaptively change with the angle of the assembly, avoiding conflict between the pulling force and the operating direction and significantly reducing operating resistance. The dual rotatable connection combined with the lifting ring 711 design retains operational flexibility while stably offsetting the weight of the assembly, effectively improving the efficiency and accuracy of the tightening operation.

[0032] Please see Figure 1 , Figure 3 and Figure 4In one embodiment, the carbon arm 81 has two spaced protrusions 811, a first mounting hole 811a is formed on the protrusion 811, a second mounting hole is formed on the fixing block 71, a groove 812 is formed between the two protrusions 811, the fixing block 71 is disposed in the groove 812, the linear bearing 62 has a third mounting hole, and the tightening device 100 also includes a fastener 9, the fastener 9 passes through one first mounting hole 811a and extends out from the other first mounting hole 811a, the fixing block 71 is mounted on the fastener 9 through the second mounting hole, and the linear bearing 62 is mounted on the end of the fastener 9 that extends out of the first mounting hole 811a through the third mounting hole. During installation, the fixing block 71 is first positioned by embedding it into the groove 812 between the two protrusions 811 of the carbon arm 81. Then, the fastener 9 is sequentially passed through the first mounting hole 811a of one protrusion 811, the second mounting hole of the fixing block 71, and the first mounting hole 811a of the other protrusion 811 and protrudes out. Finally, the linear bearing 62 is installed through the third mounting hole onto the protruding end of the fastener 9 and locked. The groove 812 structure enables precise positioning and stable installation of the fixing block 71; a single fastener 9 simultaneously connects the protrusions 811 of the carbon arm 81, the fixing block 71, and the linear bearing 62, simplifying the connection structure and reducing the number of parts; the integrated connection improves the coaxiality and overall structural integrity of the three components, enhances the stability of the tightening assembly 7 during lifting and rotation, and the assembly process is simple and efficient, facilitating later maintenance.

[0033] Please see Figures 1 to 4 In one embodiment, the mounting component 82 includes a mounting plate 821 and a connector 822. The mounting plate 821 is mounted on the column 1 and has a first rotating hole. The connector 822 has a second rotating hole. The tightening device 100 also includes a first rotating shaft 100a and a second rotating shaft 100b. The connector 822 is rotatably connected to the carbon arm 81 via the first rotating shaft 100a. The second rotating shaft 100b passes through the second rotating hole and the first rotating hole in sequence. The second rotating shaft 100b is arranged vertically, and the first rotating shaft 100a and the second rotating shaft 100b are arranged perpendicular to each other. The mounting plate 821 is fixed to the column 1. Then, the connector 822 is rotatably connected to the carbon arm 81 via the first rotating shaft 100a. Finally, the second rotating shaft 100b passes through the second rotating hole of the connector 822 and the first rotating hole of the mounting plate 821 in sequence along the vertical direction, completing the rotatable assembly of the connector 822 and the mounting plate 821. The mutually perpendicular first rotating shaft 100a and the vertical second rotating shaft 100b give the carbon arm 81 dual degrees of freedom for horizontal rotation and pitch adjustment, greatly expanding the coverage and angular flexibility of tightening operations; the installation steps are simple, the components are firmly connected and rotate smoothly, effectively improving the accuracy and ease of operation of tightening operations.

[0034] Please see Figure 1 , Figure 3 and Figure 4In one embodiment, a linear handle 712 is provided on the top of the fixing block 71, and a fish-shaped handle 713 is provided on the side wall of the fixing block 71. This embodiment achieves complementary and efficient coordination of operation functions through the combined design of the linear handle 712 on the top of the fixing block 71 and the fish-shaped handle 713 on the side wall. The linear handle 712 is located on the top of the fixing block 71, and its linear shape conforms to the vertical force logic, making it convenient for users to easily lift or press down the tightening component 7 and accurately control the lifting and resetting. The fish-shaped handle 713, based on the side wall position and ergonomic shape, provides users with a comfortable grip fulcrum, making it easy to flexibly adjust the rotation angle of the tightening component 7 and quickly align the bolt. When the two are used together, it is possible to achieve two-handed operation. One hand uses the linear handle 712 to stably control the height of the component, while the other hand uses the fish-shaped handle 713 to finely adjust the angle. This not only reduces the burden of manpower, but also greatly improves the flexibility and accuracy of tightening operations, effectively reduces operational errors, and alleviates fatigue during long-term operation.

[0035] Please see Figure 1 and Figure 3 In one embodiment, the rotating assembly 3 includes a first fixed plate 31, a second fixed plate 32, and a rotating block 33. The first fixed plate 31 and the second fixed plate 32 are both mounted on the column 1 and are spaced apart vertically. The two ends of the rotating block 33 are rotatably connected to the first fixed plate 31 and the second fixed plate 32, respectively. The swing arm 4 is connected to the rotating block 33. The first fixed plate 31 and the second fixed plate 32 are mounted vertically at intervals on the column 1. Then, the two ends of the rotating block 33 are rotatably connected to the first fixed plate 31 and the second fixed plate 32, respectively. Finally, the swing arm 4 is fixedly connected to the rotating block 33. The first fixed plate 31 and the second fixed plate 32 are equipped with seated bearings, which cooperate with the rotating block 33 to achieve rotation. The vertically spaced double fixed plates provide stable support for the rotating block 33, ensuring smooth rotation without shaking. The connection design between the two ends of the rotating block 33 and the fixed plates gives the swing arm 4 flexible rotational freedom, effectively expanding the coverage area of ​​the tightening operation. The overall structure is simple and reliable, easy to assemble, and has low maintenance costs.

[0036] Please see Figure 1 and Figure 3In one embodiment, the tightening device 100 further includes a fixing member 100c, a connecting seat 100d, and a rubber shock absorber 100e. The fixing member 100c is telescopically mounted on the connecting seat 100d, and one end of the fixing member 100c is connected to the rubber shock absorber 100e. After firmly connecting one end of the fixing member 100c to the rubber shock absorber 100e, the other end of the fixing member 100c is then telescopically assembled into the connecting seat 100d, completing the assembly of the shock-absorbing structure. The connecting seat 100d provides a stable load-bearing foundation for the entire shock-absorbing structure. The telescopic characteristics of the fixing member 100c provide the rubber shock absorber 100e with ample deformation space, allowing its elastic buffering function to be fully utilized. When vibration occurs during tightening, the rubber shock absorber 100e absorbs the impact energy through its own elasticity, the fixing member 100c synchronously telescopically adapts to the deformation of the shock absorber, avoiding rigid collisions, and the connecting seat 100d transmits the stabilized force after shock absorption to the main body of the device. It effectively reduces the interference of vibration on tightening accuracy, extends the service life of the device, and improves the comfort of operation.

[0037] Please see Figure 1 and Figure 3In one embodiment, the tightening device 100 further includes a detection component 11 and a controller 100f. The detection component 11 includes a sensor bracket 100g, which is mounted on the column 1. Two spaced mounting positions 100h are formed on the sensor bracket 100g. A proximity switch 100i is provided on each mounting position 100h. The proximity switch 100i is signal-connected to the tightening gun 72 through the controller 100f. The proximity switch 100i is used to determine the position of the bolt on the brake disc lower control arm 4. The control arm 4 is moved above the working position. Once in place, the rubber shock absorber 100e reduces lateral impact. The proximity switch 100i identifies the positions of the left and right bolts on the control arm 4 under the brake disc. The tightening assembly 7 is moved sequentially to the left and right bolts according to the tightening steps. The tightening button is pressed to start the tightening gun 72, which performs the tightening operation until completion. To reduce alignment difficulties and increase working time, the tightening assembly 7 is equipped with a carbon arm 81 to ensure vertical up-and-down movement, and a handle is added to prevent left-right swaying. A telescopic assembly 6 is added above the tightening gun 72. The tubular guide shaft 61 cooperates with the linear bearing 62 to ensure the balancer 2's tension is vertical, reducing... The reduced pulling force has less impact on the tightening gun 72 body; the first fixed plate 31 and the first fixed plate 31 are installed and matched with the bearing and rotating block 33, allowing the swing arm 4 to swing left and right by being fixed on the rotating block 33 through the clamp, increasing the working range; at the same time, the proximity switch 100i is installed to detect the position of the left and right bolts on the lower swing arm 4 of the brake disc and tighten them in sequence, which can arrange the engineering operation process; making the operation process more in line with the current work station requirements; since there is an inclination angle on the bolt position of the lower swing arm 4 of the brake disc, the addition of the lifting ring 711 can be achieved by hooking it at the position of the lifting ring 711 to obtain a certain angle. At the same time, the lifting ring 711 allows the operator to swing the tightening gun 72 to adjust the angle of the matching bolt, improving workability.

[0038] In one embodiment, the mounting position 100h includes an oblong hole, and the proximity switch 100i is slidably mounted in the oblong hole. The elongated structure of the oblong hole allows the proximity switch 100i to slide freely along the axis of the hole and be fixed at any desired position, thus adapting to brake disc lower control arms of different specifications, significantly reducing the adaptation cost and adjustment time of the device; at the same time, by sliding and adjusting the position of the proximity switch 100i, its relative distance to the detection target can be precisely set, ensuring that the proximity switch 100i always works stably within the optimal detection range, effectively reducing the false judgment rate of position detection, improving the accuracy and stability of tightening operations, and flexibly matching the detection requirements of different tightening processes, further expanding the applicable scenarios and operational reliability of the device.

[0039] Please see Figure 5 and Figure 6Furthermore, the tightening device 100 also includes an elastic element 100j, a magnetic base 100k, and a telescopic shaft 100m. A limit plate is provided on the column 1. The telescopic shaft 100m extends and retracts through the limit plate and connects to the magnetic base 100k. The elastic element 100j is sleeved on the telescopic shaft 100m. The two ends of the elastic element 100j abut against the limit plate and the magnetic base 100k, respectively. The magnetic base 100k is used to fit against the swing arm 4. After the tightening operation is completed, the tightening assembly 7 and the swing arm 4 are operated to return to their original positions. The original positions are ensured by the magnetic base 100k. If the tightening operation fails, the operation is reworked until the tightening indicator light turns green. During operation, the swing arm 4 disengages from the magnetic base 100k. Since the elastic element 100j is normally compressed, after the swing arm 4 disengages from the magnetic base 100k, the elastic element 100j releases its stored elastic potential energy, pushing the magnetic base 100k to extend, thus causing the telescopic shaft 100m to extend axially along the limiting plate. After the operation is completed, the swing arm 4 moves to engage with the magnetic base 100k, and the magnetic base 100k attracts the swing arm 4, simultaneously pushing the magnetic base 100k to move, thus compressing the elastic element 100j, and causing the telescopic shaft 100m to retract synchronously. This overall structure not only simplifies the reset operation process and improves reset accuracy and stability, but also reduces rigid collisions between components through elastic buffering, extending the device's service life.

[0040] In one embodiment, the magnetic base 100k is a permanent magnet base; or the magnetic base 100k includes an electromagnet, and the controller 100f controls the on / off state of the electromagnet to achieve the attraction or release of the swing arm 4 by the magnetic base 100k. The permanent magnet base solution has a simple structure without additional electrical control components, lower cost, and stable and long-lasting attraction. It can reliably fix the swing arm in its original position without power, making it suitable for repetitive tightening operations at fixed workstations where frequent switching of attraction and release states is not required, effectively ensuring reset accuracy and operational stability. The electromagnet plus controller solution achieves flexible switching between attraction and release through electrical control, which can accurately match the working rhythm of automated production lines or meet the complex operational needs of frequent adjustment of the swing arm position. At the same time, it can avoid the risk of component magnetization caused by long-term attraction of permanent magnets, greatly improving the automation level and operational flexibility of the work process. The two solutions complement each other and cover different application scenarios, allowing the tightening device to be flexibly selected according to actual operational needs, further expanding its applicability and practical value.

[0041] Please see Figure 1 , Figure 3 and Figure 5In one embodiment, the tightening device 100 further includes a first screw 100n, a second screw 100l, and an adjusting rod 100o. The adjusting rod 100o has threaded holes at both ends. One end of the first screw 100n and the second screw 100l are threadedly connected to the two threaded holes respectively. The other end of the first screw 100n is rotatably connected to the rotating assembly 3. The other end of the second screw 100l is rotatably connected to a sliding plate 100p, which is slidably mounted on the top of the swing arm 4. Initial connection is achieved by screwing one end of the first screw 100n and the second screw 100l into the threaded holes at both ends of the adjusting rod 100o. Then, the other end of the first screw 100n is rotatably connected to the rotating assembly 3, and the other end of the second screw 100l is rotatably connected to the sliding plate 100p. Finally, the sliding plate 100p is slidably mounted on the top of the swing arm 4, completing the assembly of the entire adjusting structure. Efficient and precise adjustment is achieved through the synergistic action of the first screw 100n, the second screw 100l, and the adjusting rod 100o. The threaded holes at both ends of the adjusting rod 100o provide a basic carrier for the telescopic adjustment of the two screws. When the adjusting rod 100o is rotated, the first screw 100n and the second screw 100l can synchronously extend and retract along the axial direction of the threaded holes, thereby flexibly changing the overall length of the adjustment structure. The rotational connection between the first screw 100n and the rotating assembly 3 ensures adaptive adaptation of the angle during the adjustment process. The rotational connection between the second screw 100l and the sliding plate 100p, combined with the sliding of the sliding plate 100p on the top of the swing arm 4, makes the position adjustment of the swing arm 4 smoother and more stable. This embodiment not only significantly expands the working coverage and position adjustment accuracy of the tightening device 100, but also simplifies the operation process, enabling rapid adaptation to the tightening requirements of bolts of different specifications and positions, and improving work efficiency and flexibility.

[0042] The above are merely exemplary embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A tightening device for installation of a brake disc lower swing arm, characterized in that, The utility model relates to a kind of tightening device, including: Stand; Balancer; Rotary assembly, the rotary assembly is connected with the stand; Swing arm, the swing arm is connected with the rotary end of the rotary assembly; Sliding assembly, the sliding assembly is slidingly installed in the swing arm; Telescopic assembly, the balancer and the telescopic assembly are connected with the sliding assembly; Tightening assembly, the tightening assembly is rotatably connected with the extension end of the telescopic assembly, and the pull hook of the balancer is rotatably connected with the tightening assembly; Limiting assembly, the limiting assembly includes carbon arm and mounting component, the mounting component is installed in the stand, one section of the carbon arm is rotatably connected with the mounting component, and the other end of the carbon arm is rotatably connected with the tightening assembly.

2. The tightening device according to claim 1, characterized in that The telescopic assembly includes a tubular guide shaft and a linear bearing, the linear bearing is slidingly installed in the tubular guide shaft, the tubular guide shaft is arranged along the vertical direction, and the tubular guide shaft is connected with the sliding assembly, and the linear bearing is rotatably connected with the tightening assembly.

3. The tightening device of claim 2, wherein The tightening assembly includes a fixed block and a tightening gun, the tightening gun is installed in the fixed block, the fixed block is rotatably connected with the linear bearing, a lifting eye is formed on the fixed block, and the pull hook of the balancer is rotatably connected with the lifting eye.

4. The tightening device according to claim 3, characterized in that The carbon arm is formed with two spaced protrusions, the protrusions are formed with first mounting holes, the fixed block is formed with second mounting holes, a groove is formed between the two protrusions, the fixed block is arranged in the groove, the linear bearing is formed with third mounting holes, the tightening device further includes a fastener, the fastener passes through one of the first mounting holes and extends from the other first mounting hole, the fixed block is installed in the fastener through the second mounting hole, and the linear bearing is installed in the end of the fastener extending out of the first mounting hole through the third mounting hole.

5. The tightening device of claim 1, wherein The mounting component includes a mounting plate and a connecting piece, the mounting plate is installed in the stand, the mounting plate is formed with a first rotating hole, the connecting piece is formed with a second rotating hole, the tightening device further includes a first rotating shaft and a second rotating shaft, the connecting piece is rotatably connected with the carbon arm through the first rotating shaft, the second rotating shaft passes through the second rotating hole and the first rotating hole in sequence, the second rotating shaft is arranged along the vertical direction, and the first rotating shaft and the second rotating shaft are arranged perpendicular to each other.

6. The tightening device of claim 3, wherein A linear handle is arranged on the top of the fixed block, and a fish-shaped handle is arranged on the side wall of the fixed block.

7. The tightening device of claim 6, wherein The rotary assembly includes a first fixed plate, a second fixed plate and a rotating block, the first fixed plate and the second fixed plate are both installed in the stand, and the first fixed plate and the second fixed plate are arranged vertically and spaced apart, the two ends of the rotating block are rotatably connected with the first fixed plate and the second fixed plate respectively, and the swing arm is connected with the rotating block.

8. The tightening device of claim 7, wherein The tightening device further includes a fixing piece, a connecting seat and a rubber shock absorber, the fixing piece is telescopically installed in the connecting seat, and one end of the fixing piece is connected with the rubber shock absorber.

9. The tightening device of claim 8, wherein The tightening device further comprises a detection component and a controller, the detection component comprises a sensor support installed on the stand column, two mounting positions are formed on the sensor support, a proximity switch is arranged on each mounting position, the proximity switch is connected with the tightening gun through the controller, and the proximity switch is used for the position of the bolt on the lower swing arm of the brake disc.

10. The tightening device according to any one of claims 1 to 9, characterized in that The tightening device further comprises a first screw rod, a second screw rod and an adjusting rod, threaded holes are formed at two ends of the adjusting rod, one end of the first screw rod and the second screw rod is respectively connected with the threaded holes, the other end of the first screw rod is rotationally connected with the rotating assembly, and the other end of the second screw rod is rotationally connected with a sliding plate, and the sliding plate is slidingly installed on the top of the swing arm.

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