A front leaf spring intelligent control multi-axis tightening trolley

Abstract

This utility model relates to the field of front leaf spring tightening technology, and provides a front leaf spring intelligent control multi-axis tightening trolley, including a trolley welding frame, a tightening body, and a tightening gun body. The top of the trolley welding frame is equipped with a slide table fine adjustment component. This utility model allows the device to slide on both sides of the bottom of the vehicle body and perform the tightening operation of the front leaf spring through Y-axis movement. Compared with setting a tightening device on each side of the bottom of the vehicle body, this method only requires a single tightening device to perform the tightening operation on both sides of the bottom of the vehicle body, effectively reducing the equipment investment cost. At the same time, the tightening body and the tightening gun body can be adaptively adjusted according to the actual position of the front leaf spring. The tightening gun body can not only be finely adjusted in angle and X-axis, but also has a cross swing joint and small-angle rotation function added to the front end of the tightening shaft of the tightening gun body to ensure that the tightening gun body can be aligned and inserted with the nut of the front leaf spring.

Description

Technical Field

[0001] This utility model relates to the field of front leaf spring tightening technology, and in particular to a front leaf spring intelligent control multi-axis tightening trolley. Background Technology

[0002] In the automotive manufacturing and related industries, the assembly of front leaf springs is a critical step, and the quality of bolt tightening directly affects the performance and reliability of the front leaf springs, as well as the safety and stability of the entire vehicle. However, there are currently many problems to be solved regarding bolt tightening equipment:

[0003] Currently, common bolt tightening methods mainly rely on manual labor or pneumatic wrenches. In manual tightening, operators must use their own strength to tighten bolts with tools such as wrenches. This is not only extremely difficult and physically demanding, but also very labor-intensive. Prolonged high-intensity work can easily lead to operator fatigue, affecting work efficiency and potentially causing operational errors due to exhaustion, thus impacting the tightening quality.

[0004] While pneumatic wrenches improve tightening speed to some extent, they also present several problems. Pneumatic wrenches generate significant noise and vibration during operation, which can harm the health of operators. Prolonged work in such an environment may lead to occupational diseases such as hearing loss and vibratory arm syndrome. Furthermore, the tightening force control of pneumatic wrenches is not precise enough, making it difficult to adjust the appropriate tightening force according to different bolt sizes and actual working conditions. This can easily result in insufficient preload, affecting the assembly quality of the front leaf springs.

[0005] To meet the demands of large-scale production for efficiency and tightening quality, some companies have adopted complex multi-axis tightening equipment. However, this type of equipment typically requires one set on each side, a layout that brings several drawbacks. First, it significantly increases equipment investment costs. Having one set on each side means the company needs to purchase more spare parts, incurring higher equipment procurement costs. Second, due to the relatively complex operation, dedicated operators are required to independently operate and monitor both sets of equipment. This not only wastes personnel and increases labor costs but also adds to the difficulty of managing the production site. Furthermore, the coordinated operation of the two sets of equipment also presents challenges, requiring additional time and effort for debugging and calibration to ensure consistency in tightening operations, further impacting production efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a front leaf spring intelligent control multi-axis tightening trolley, which solves the above-mentioned problems by using this device.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a front leaf spring intelligent control multi-axis tightening trolley, including a trolley welding frame, a tightening body and a tightening gun body. A slide table fine adjustment component is provided on the top of the trolley welding frame, a telescopic rod is provided on the top of the slide table fine adjustment component, the tightening body is provided on the top of the telescopic rod, a tightening gun swing joint is provided between the telescopic rod and the tightening body, the tightening gun body is provided on the top of the tightening body, the tightening gun body is used for tightening nuts, a balance cylinder is provided on one side of the telescopic rod, the balance cylinder is used to push the tightening body and the tightening gun body up and down, and slide rails are provided at both ends of the bottom of the slide table fine adjustment component, and the slide rails are set on the trolley welding frame.

[0008] Preferably, the telescopic end of the top of the balance cylinder is connected to the telescopic end of the top of the telescopic rod, the bottom of the balance cylinder is connected to the side wall of the telescopic rod, and the slide table fine-tuning assembly is connected to the slide rail via a slider.

[0009] Preferably, a base handle is fixed to the front end of one side of the top of the trolley welding frame, and a bracket is fixed to the rear end of one side of the top of the trolley welding frame. A support rod is installed on the top of the bracket, and a hook-and-follow assembly is hinged to the rear end of the support rod. A hook-and-follow cylinder is provided at the bottom of the support rod, and the telescopic end of the hook-and-follow cylinder is hinged to the hook-and-follow assembly.

[0010] Preferably, a tightening control handle is provided on one side of the tightening body, a valve box is installed on one side of the bracket, a traction rod is provided above the valve box, and the traction rod is fixed to the bracket by a connecting rod.

[0011] Preferably, casters are installed at both ends of the bottom of the trolley welding frame, and two ground guides are provided at both ends of one side of the trolley welding frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model provides a front leaf spring intelligent control multi-axis tightening trolley. Through Y-axis movement, the device can slide on both sides of the vehicle bottom and perform tightening operations on the front leaf springs. Compared to setting up a tightening device on each side of the vehicle bottom, this method only requires a single tightening device to tighten both sides of the vehicle bottom, effectively reducing equipment investment costs. At the same time, the tightening body and tightening gun body can be adaptively adjusted according to the actual position of the front leaf spring. The tightening gun body can not only make fine adjustments in angle and X-axis, but also has a cross swing joint and small-angle rotation function added to the front end of the tightening shaft of the tightening gun body to ensure that the tightening gun body can be aligned and inserted with the nut of the front leaf spring. This ensures that the tightening gun body can work effectively and prevents the tightening shaft of the tightening gun body from failing to accurately insert with the nut due to misalignment, which would affect the tightening operation.

[0014] 2. The present invention provides a front leaf spring intelligent control multi-axis tightening trolley. By adding a load balancing function to the equipment, the tightening gun is suspended, allowing the operator to easily raise and lower the tightening gun. Workers no longer need to operate it with the same effort as before, greatly reducing physical burden and labor intensity. This effectively avoids physical fatigue and injury caused by long-term high-intensity labor and improves production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0016] Figure 2 This is a bottom view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0018] Figure 4 This is a front view structural diagram of the present utility model;

[0019] Figure 5 This is a top view of the structure of this utility model;

[0020] Figure 6 This is a side view of the structure of this utility model. Figure 1 ;

[0021] Figure 7 This is a side view of the structure of this utility model. Figure 2 ;

[0022] Figure 8 This is a partial three-dimensional structural diagram of the present invention.

[0023] The following are the labels in the attached diagram: 1. Trolley welding frame; 11. Caster; 12. Ground guide; 13. Base frame handle; 2. Slide table fine-tuning assembly; 21. Slide rail; 22. Balance cylinder; 23. Telescopic rod; 3. Tightening body; 31. Tightening control handle; 32. Tightening gun swing joint; 4. Tightening gun body; 5. Bracket; 51. Traction rod; 52. Valve housing; 53. Support rod; 54. Hanging and following assembly; 55. Hanging and following cylinder. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0026] Combination Figures 1 to 8 As shown, this utility model discloses a front leaf spring intelligent control multi-axis tightening trolley, including a trolley welding frame 1, a tightening body 3, and a tightening gun body 4. The top of the trolley welding frame 1 is provided with a slide table fine adjustment component 2, the top of the slide table fine adjustment component 2 is provided with a telescopic rod 23, the top of the telescopic rod 23 is provided with the tightening body 3, and a tightening gun swing joint 32 is provided between the telescopic rod 23 and the tightening body 3. The top of the tightening body 3 is provided with the tightening gun body 4, which is used for tightening nuts. A balance cylinder 22 is provided on one side of the telescopic rod 23, which is used to push the tightening body 3 and the tightening gun body 4 up and down. The bottom ends of the slide table fine adjustment component 2 are provided with slide rails 21, and the slide rails 21 are provided on the trolley welding frame 1.

[0027] The telescopic end of the top of the balance cylinder 22 is connected to the telescopic end of the top of the telescopic rod 23, the bottom of the balance cylinder 22 is connected to the side wall of the telescopic rod 23, and the slide table fine adjustment assembly 2 is connected to the slide rail 21 through the slider.

[0028] A base handle 13 is fixed to the front end of one side of the top of the trolley welding frame 1. A bracket 5 is fixed to the rear end of one side of the top of the trolley welding frame 1. A support rod 53 is installed on the top of the bracket 5. A hook-and-follow assembly 54 is hinged to the rear end of the support rod 53. A hook-and-follow cylinder 55 is provided at the bottom of the support rod 53. The telescopic end of the hook-and-follow cylinder 55 is hinged to the hook-and-follow assembly 54.

[0029] A tightening control handle 31 is provided on one side of the tightening body 3, a valve box 52 is installed on one side of the bracket 5, a traction rod 51 is provided above the valve box 52, and the traction rod 51 is fixed to the bracket 5 by a connecting rod.

[0030] Casters 11 are installed at both ends of the bottom of the trolley welding frame 1, and two ground guides 12 are provided at both ends of one side of the trolley welding frame 1.

[0031] Specifically, this tightening trolley is designed to meet the tightening requirements of leaf spring nuts under different working conditions.

[0032] Trolley welding frame 1: As the supporting foundation of the entire tightening system, trolley welding frame 1 provides a stable and reliable platform for the system. It supports components such as the tightening body 3 and slide rail 21, ensuring the stability of the entire system during operation.

[0033] Casters 11: The casters 11 at the bottom of the trolley welding frame 1 enable the device to move flexibly. The operator can easily move the device to the position of the workpiece to be operated.

[0034] Height Adjustment: The height of the tightening gun body 4 is controlled by a balance cylinder 22. The balance cylinder 22 drives the telescopic end of the telescopic rod 23 to move up and down, thereby causing the tightening body 3 and the tightening gun body 4 to rise and fall synchronously. This design allows the sleeve on the tightening gun body 4 to accommodate nuts of different heights, ensuring accurate tightening. Simultaneously, for ease of operation, a load-balancing function is added to the equipment, keeping the tightening gun in a suspended state. Operators can easily raise and lower the tightening gun, greatly reducing labor intensity and improving production efficiency.

[0035] Angle Adjustment: The telescopic rod 23 is hinged to the tightening body 3 via the tightening gun swing joint 32. The operator can tilt the tightening body 3 to the left or right by operating the tightening control handle 31, thus flexibly adjusting the angle of the tightening gun body 4. A cross swing joint and a small-angle rotation function are added to the front end of the tightening shaft of the tightening gun body 4. (The cross swing joint allows the equipment to swing in four directions: front, back, left, and right; the small-angle rotation function is a rotation centered on the Z-axis. These two functions work together to allow the equipment to adapt to the angle of the tightened bolt at a suitable angle and direction.) This adaptively compensates for the angle deviation of the leaf spring, enabling it to work under different conditions, greatly increasing the fault tolerance and improving tightening accuracy.

[0036] X-axis fine adjustment: The slide table fine adjustment component 2 has its own X-axis fine adjustment function (the slide table fine adjustment component 2 uses linear bearings, optical shafts, and springs to enable the equipment to move within a small range in the X direction, and the equipment automatically resets in its natural state. The purpose of this small range of movement is to compensate for the distance deviation in the X direction during use). Operators can make precise adjustments to the tightening body 3 and the tightening gun body 4 in the X direction according to actual needs to ensure the accuracy of the tightening position.

[0037] Y-axis movement: The slide table fine adjustment component 2, using the slider and slide rail 21, can adjust the Y-axis position of the tightening body 3 and the tightening gun body 4 on the entire carriage, making it convenient to accommodate tightening workpieces of different specifications.

[0038] During the tightening operation of the front leaf springs of the vehicle body, the vehicle body is in a moving state. When the vehicle body to be tightened reaches the work station, the engagement follower cylinder 55, in conjunction with the engagement follower assembly 54, engages the tightening system with the vehicle body. At this time, the entire tightening system moves with the vehicle body until the tightening gun body 4 completes the tightening work. This passive follower engagement mechanism design ensures the synchronization of the tightening process with the movement of the vehicle body, effectively avoiding the problem of inaccurate tightening caused by workpiece movement.

[0039] The tightening trolley supports dual torque and angle control modes, ensuring that each fastener reaches the predetermined tightening parameters, thereby guaranteeing assembly quality. The intelligent tightening system also features data traceability, recording data for each tightening operation, facilitating subsequent quality management and troubleshooting. The structure is simple, and the equipment is easy to maintain, greatly improving its utilization rate.

[0040] The valve housing 52 is used for various control valves during the tightening process, making the control circuit of the entire system clearer and more orderly, and facilitating management and maintenance by operators.

[0041] Workflow:

[0042] During operation, the operator uses caster 11 to move the device to the desired workpiece position. Based on the actual height and angle of the nut, the operator adjusts the height of the tightening gun body 4 using the balance cylinder 22, and adjusts its angle using the tightening control handle 31 to ensure accurate alignment and insertion of the sleeve and nut. Then, the operator presses the tightening button on the tightening control handle 31 to control the tightening gun body 4 to tighten the nut. After all nuts are tightened, the operator again uses the tightening control handle 31 to control the balance cylinder 22 to lower the tightening gun body 4, moving both the tightening body 3 and the tightening gun body 4 back to their initial positions, ready for the next tightening operation.

[0043] Traditional tightening methods rely on manual labor or pneumatic wrenches, making the process extremely difficult and requiring workers to expend a great deal of physical strength to complete the bolt tightening task. In contrast, this anti-torsion arm intelligent control multi-axis tightening trolley equipment is simple and easy to operate. Workers no longer need to exert themselves as much as before, greatly reducing physical burden and labor intensity. It effectively avoids physical fatigue and injury caused by long-term high-intensity labor, improving work comfort and sustainability.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A front leaf spring intelligent control multi-axis tightening trolley, comprising a trolley welding frame (1), a tightening body (3), and a tightening gun body (4), characterized in that: The top of the trolley welding frame (1) is provided with a slide table fine adjustment component (2), the top of the slide table fine adjustment component (2) is provided with a telescopic rod (23), the top of the telescopic rod (23) is provided with a tightening body (3), a tightening gun swing joint (32) is provided between the telescopic rod (23) and the tightening body (3), the top of the tightening body (3) is provided with a tightening gun body (4), the tightening gun body (4) is used for tightening nuts, a balance cylinder (22) is provided on one side of the telescopic rod (23), the balance cylinder (22) is used to push the tightening body (3) and the tightening gun body (4) up and down, and slide rails (21) are provided at both ends of the bottom of the slide table fine adjustment component (2), and the slide rails (21) are provided on the trolley welding frame (1).

2. The front steel plate spring intelligent control multi-axle tightening trolley according to claim 1, characterized in that: The telescopic end of the top of the balance cylinder (22) is connected to the telescopic end of the top of the telescopic rod (23), the bottom of the balance cylinder (22) is connected to the side wall of the telescopic rod (23), and the slide table fine adjustment assembly (2) is connected to the slide rail (21) through the slider.

3. The front steel plate spring intelligent control multi-axle tightening trolley according to claim 1, characterized in that: The front end of the top side of the trolley welding frame (1) is fixed with a base handle (13), and the rear end of the top side of the trolley welding frame (1) is fixed with a bracket (5). A support rod (53) is installed on the top of the bracket (5), and a hanging follower component (54) is hinged to the rear end of the support rod (53). A hanging follower cylinder (55) is provided at the bottom of the support rod (53), and the telescopic end of the hanging follower cylinder (55) is hinged to the hanging follower component (54).

4. The front steel plate spring intelligent control multi-axle tightening trolley according to claim 3, characterized in that: A tightening control handle (31) is provided on one side of the tightening body (3), a valve box (52) is installed on one side of the bracket (5), a traction rod (51) is provided above the valve box (52), and the traction rod (51) is fixed to the bracket (5) by a connecting rod.

5. The intelligent control multi-axis tightening trolley for front leaf springs according to claim 1, characterized in that: Casters (11) are installed at both ends of the bottom sides of the trolley welding frame (1), and two ground guides (12) are provided at both ends of one side of the trolley welding frame (1).

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