An electric gun dismounting device suitable for various types of bolts

Abstract

The utility model relates to bolt dismounting tool technical field, concretely relates to a kind of electric gun dismounting device of adaptable multiple model bolts, including the hydraulic oil pipe being connected with electric gun body and telescopic adjusting mechanism, the telescopic adjusting mechanism includes: multiple circumferential interval distribution and the radial telescopic gripping clamp;With the main stem hydraulic telescopic rod being connected with the hydraulic oil pipe, for the gripping range of the gripping clamp is controlled;With the auxiliary stem hydraulic telescopic rod being connected with gripping clamp, for adjusting the length of extension of gripping clamp;The main stem hydraulic telescopic rod is slidably connected with the auxiliary stem hydraulic telescopic rod by slide rail.This technical solution realizes the radial telescopic gripping clamp by the main stem hydraulic telescopic rod and slide rail cooperation, in combination with the adjustment of the length of extension of gripping clamp by auxiliary stem hydraulic telescopic rod, can be flexibly adapted to multiple model bolts, without frequent replacement of tool bit, effectively improve assembly efficiency;The anti-slip design of gripping clamp enhances the stability of gripping, reduces the risk of silk.

Description

Technical Field

[0001] This utility model relates to the technical field of bolt disassembly and assembly tools, specifically to an electric gun disassembly and assembly device that can be adapted to multiple bolt models. Background Technology

[0002] In existing technologies, bolt installation and removal primarily rely on electric screwdrivers (or electric bolt guns), whose core working component is the screwdriver bit that matches the bolt head. To accommodate different bolt types, the electric gun needs to be equipped with various sizes of screwdriver bits, such as hexagonal, Phillips, and slotted bits, as well as different sized bits, which are frequently changed according to the bolt type. However, this method has the following significant drawbacks: On the one hand, changing the cutting head requires interrupting the assembly process, and operators need to search for the matching model among multiple cutting heads. Especially in batch assembly scenarios, frequent start-stop and search actions significantly prolong the assembly cycle of a single product and reduce the overall efficiency of the production line. On the other hand, multiple cutting heads need to be placed on the assembly table or tool rack for a long time, which not only takes up space, but is also prone to wear or loss due to collisions and confusion, increasing tool management costs. At the same time, a cluttered table may also affect operational safety. Summary of the Invention

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this utility model is to provide an electric gun assembly / disassembly device that can adapt to multiple bolt types, thereby reducing the frequency of tool head replacement.

[0004] The objective of this utility model can be achieved through the following technical solutions: An electric gun assembly / disassembly device adaptable to various bolt sizes includes a hydraulic hose connected to the electric gun body and a telescopic adjustment mechanism. The telescopic adjustment mechanism includes: multiple circumferentially spaced and radially retractable grippers; a main hydraulic telescopic rod connected to the hydraulic hose for controlling the gripping range of the grippers; and a secondary hydraulic telescopic rod connected to the grippers for adjusting the extension length of the grippers. The main hydraulic telescopic rod is slidably connected to the secondary hydraulic telescopic rod via a slide rail, and both the main and secondary hydraulic telescopic rods are in communication with the hydraulic oil inside the hydraulic hose.

[0005] In some embodiments of this utility model, the main hydraulic telescopic rod includes a cylinder and a piston rod. The end of the cylinder away from the piston rod is fixedly connected to the hydraulic oil pipe, and the end of the piston rod is fixedly connected to the slide rail. The extension and retraction of the piston rod drives the slide rail, the auxiliary hydraulic telescopic rod, and the gripper to move radially, thereby adjusting the gripping range of the gripper.

[0006] In some embodiments of this utility model, the auxiliary hydraulic telescopic rod corresponds one-to-one with the gripper. The auxiliary hydraulic telescopic rod includes a cylinder and a piston rod. The cylinder is fixedly connected to the slide rail, and the end of the piston rod away from the cylinder is fixedly connected to the gripper. The extension and retraction of the piston rod drives the gripper to move axially, thereby adjusting the extension length of the gripper.

[0007] In some embodiments of this utility model, a total of six grippers are evenly distributed circumferentially. Each gripper moves synchronously radially through the slide rail and the main hydraulic telescopic rod, and the end of the gripper is provided with a bolt gripping part with anti-slip texture.

[0008] In some embodiments of this utility model, the anti-slip texture is composed of vertical grooves parallel to the axial direction of the gripper, the groove direction is perpendicular to the bolt rotation direction, and the cross section of the groove is an isosceles triangle, which is used to increase the lateral friction resistance.

[0009] In some embodiments of this utility model, a universal ball joint is provided between the slide rail and the auxiliary hydraulic telescopic rod. One end of the universal ball joint is fixedly connected to the slide rail, and the other end is fixedly connected to the auxiliary hydraulic telescopic rod, so that the gripper can swing relative to the slide rail within a range of ±15°.

[0010] In some embodiments of this utility model, the end of the gripper is formed with a limiting groove that is L-shaped in side view, and the limiting groove is detachably connected to a replaceable tooth.

[0011] In some embodiments of this utility model, a slot is formed at the top of the limiting groove, a plug rod matching the size of the slot is provided at the top of the replaceable tooth, a threaded hole is formed at the bottom of the limiting groove, and a screw matching the size of the threaded hole is provided at the bottom of the replaceable tooth, and the screw is threadedly connected to the threaded hole.

[0012] In some embodiments of this utility model, one or more of AC are also included: A. The end of the main hydraulic telescopic rod is provided with a limiting block, which is used to limit the radial extension range of the gripper; B. The hydraulic oil pipe includes a first branch pipe and a second branch pipe. The first branch pipe is connected to the cylinder of the main hydraulic telescopic rod, and the second branch pipe is connected to the cylinder of the auxiliary hydraulic telescopic rod. The first branch pipe and the second branch pipe are respectively provided with independent control valves. C. The surface of the hydraulic oil pipe is also equipped with buttons for controlling the control valves on the first and second branch pipes.

[0013] In some embodiments of this utility model, the hydraulic oil pipe is detachably connected to the electric gun body, and the hydraulic oil pipe is provided with a mounting hole adapted to the end of the electric gun body, and the inner wall of the mounting hole is provided with anti-slip protrusions.

[0014] The beneficial effects of this utility model are: Compared to traditional methods, this technical solution achieves radial extension and retraction of the gripper through the cooperation of the main hydraulic telescopic rod and the slide rail. Combined with the adjustment of the gripper extension length by the auxiliary hydraulic telescopic rod, it can flexibly adapt to various types of bolts, eliminating the need for frequent replacement of cutting heads and effectively improving assembly efficiency. The anti-slip texture design of the gripper enhances gripping stability and reduces the risk of stripping threads. The universal ball joint allows the gripper to swing adaptively, improving the gripping ability for bolts in inclined or special positions. The detachable connection of the hydraulic oil pipe and the electric gun, as well as the independently controlled hydraulic branch circuit design, facilitates the maintenance and operation of the device, reduces tool management costs, and comprehensively solves the problems of poor versatility of traditional cutting heads, cumbersome operation, and cluttered worktables. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the universal ball joint component in Embodiment 2 of this utility model; Figure 3 This is a perspective view of the gripper and replaceable toothed head in Embodiment 3 of this utility model; Figure 4 This is a perspective view of the limiting groove in Embodiment 3 of this utility model; Figure 5 This is a perspective view of the replaceable tooth in Embodiment 3 of this utility model.

[0017] In the diagram: 1. Hydraulic oil pipe; 2. Button; 3. Main hydraulic telescopic rod; 4. Slide rail; 5. Secondary hydraulic telescopic rod; 6. Grip clamp; 61. Anti-slip texture; 62. Limiting groove; 63. Replaceable toothed head; 64. Slot; 65. Threaded hole; 66. Insert rod; 67. Screw; 7. Universal ball joint. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model. Example

[0019] like Figure 1 , Figure 2As shown, an electric gun assembly / disassembly device adaptable to various bolt types includes a hydraulic hose 1 connected to the electric gun body and a telescopic adjustment mechanism. The telescopic adjustment mechanism includes: multiple circumferentially spaced and radially extendable grippers 6; a main hydraulic telescopic rod 3 connected to the hydraulic hose 1 for controlling the gripping range of the grippers 6; and a secondary hydraulic telescopic rod 5 connected to the grippers 6 for adjusting the extension length of the grippers 6. The main hydraulic telescopic rod 3 is slidably connected to the secondary hydraulic telescopic rod 5 via a slide rail 4. Both the main hydraulic telescopic rod 3 and the secondary hydraulic telescopic rod 5 are connected to the hydraulic oil inside the hydraulic hose 1. This device achieves compatibility with different bolts through the coordinated operation of the main and secondary hydraulic telescopic rods.

[0020] For example, the electric gun body, as the power output base, needs to match the torque requirements and interface specifications of the device. Common optional models include: Bosch GDS 18V-450, DeWalt DCF894B, and Hitachi WR18DBDL.

[0021] Hydraulic hose 1 needs to meet the requirements of pressure resistance, oil resistance, and flexibility, and be compatible with system pressure, usually 5-16MPa. Optional models include: Parker 481TC series hydraulic hoses; its features are: an inner layer of oil-resistant synthetic rubber, an outer layer of wear-resistant neoprene rubber, and two layers of high-strength steel wire braid in the middle; suitable for compact internal space layouts and compatible with hydraulic media such as mineral oil and water glycol.

[0022] The main telescopic rod needs to drive the slide rail 4 and the gripper 6 to adjust as a whole, and needs to have a certain thrust and stroke. Optional models include: Rexroth CDT3 series hydraulic cylinders and Eaton 1AX series tie rod hydraulic cylinders; while the auxiliary telescopic rod needs to be small in size and fast in response, and be suitable for the fine adjustment of a single gripper 6. Optional models include: SMC CG1 series small hydraulic cylinders and Airtac MOB series mini hydraulic cylinders.

[0023] In some embodiments of this utility model, the main hydraulic telescopic rod 3 includes a cylinder and a piston rod. The end of the cylinder away from the piston rod is fixedly connected to the hydraulic oil pipe 1, and the end of the piston rod is fixedly connected to the slide rail 4. The extension and retraction of the piston rod drives the slide rail 4, the auxiliary hydraulic telescopic rod 5, and the gripper 6 to move radially, thereby adjusting the gripping range of the gripper 6. The principle of this design is to transform the single linear movement of the main hydraulic telescopic rod 3 into the synchronous and uniform radial contraction or expansion of all grippers 6 through the platform of the slide rail 4. This synchronous movement ensures that when gripping bolts, the force on each gripper 6 is uniform, and it can accurately align with the center of the bolt, thereby achieving stable clamping and effectively adapting to bolts of different diameters.

[0024] In some embodiments of this utility model, the auxiliary hydraulic telescopic rod 5 corresponds one-to-one with the gripper 6. The auxiliary hydraulic telescopic rod 5 includes a cylinder and a piston rod. The cylinder is fixedly connected to the slide rail 4, and the end of the piston rod away from the cylinder is fixedly connected to the gripper 6. The extension and retraction of the piston rod drives the gripper 6 to move axially, thereby adjusting the extension length of the gripper 6. When hydraulic oil enters the cylinder of the auxiliary hydraulic telescopic rod 5, it drives the piston rod to extend or retract, thereby causing the gripper 6 to produce an extension and retraction movement along its own axis. The purpose of this design is to adjust the extension length of the gripper 6 so that the device can contact bolts of different depths, such as bolts located in deep holes or grooves, greatly enhancing the device's depth-of-work capability. The output end of the main hydraulic telescopic rod 3 is slidably connected to the auxiliary hydraulic telescopic rod 5 through the slide rail 4, and both are connected to the hydraulic oil inside the hydraulic oil pipe 1, forming the power basis for the entire bidirectional adjustment.

[0025] In operation, hydraulic oil flows through hydraulic pipe 1 and enters the main hydraulic telescopic rod 3 and auxiliary hydraulic telescopic rods 5 individually or simultaneously according to control commands. When hydraulic oil enters the main hydraulic telescopic rod 3, its piston rod extends or retracts, causing the slide rail 4 to move as a whole. This causes all the auxiliary hydraulic telescopic rods 5 mounted on the slide rail 4, along with the gripper 6, to simultaneously undergo radial displacement, thus adjusting the gripping range. When hydraulic oil enters multiple auxiliary hydraulic telescopic rods 5, the extension or retraction of their respective piston rods causes the gripper 6 to undergo axial displacement, thus adjusting the gripping length. The combination of these two movements allows the device to precisely adapt to and grip bolts of different sizes and positions. Example

[0026] Based on the core drive mechanism of Embodiment 1, this embodiment focuses on optimizing the gripping end of the gripper 6 to improve gripping reliability and adaptability under complex working conditions.

[0027] In some embodiments of this invention, the device has six grippers 6 evenly distributed circumferentially, and each gripper 6 moves synchronously radially via a slide rail 4 and a main hydraulic telescopic rod 3. Compared to traditional three- or four-jaw structures, the six-point contact distributes the clamping force more evenly across the six faces of the hexagonal bolt, reducing pressure on the bolt's edges and corners. This provides a more stable clamping force and effectively prevents damage to the bolt under high torque.

[0028] For example, the end of the gripper 6 is provided with a bolt gripping part with anti-slip grooves 61. The anti-slip grooves 61 are formed by vertical grooves parallel to the axis of the gripper 6, and the direction of the grooves is perpendicular to the direction of bolt rotation. The ingenious part of this design is that the cross-section of the grooves is an isosceles triangle. When the electric gun applies rotational torque, the bolt will generate a lateral shear force. At this time, the sharp edge of the triangular groove will "bite" into the metal surface of the bolt head due to its geometric advantage, generating a large frictional resistance perpendicular to the direction of rotation, thus effectively preventing slippage when disassembling or assembling rusty or overtightened bolts under high torque.

[0029] In some embodiments of this utility model, such as Figure 2 As shown, a universal ball joint 7 is provided between the slide rail 4 and the auxiliary hydraulic telescopic rod 5. One end of the universal ball joint 7 is fixedly connected to the slide rail 4, and the other end is fixedly connected to the auxiliary hydraulic telescopic rod 5, allowing the gripper 6 to swing relative to the slide rail 4 within a range of ±15°. Its working principle is to provide a passive angle adjustment capability. When the device is aligned with a bolt that is slightly tilted due to installation errors or workstation limitations, the universal ball joint 7 allows the gripper 6, along with the piston rod of the auxiliary hydraulic telescopic rod 5, to swing within a maximum angle range of ±15 degrees at the moment of contact with the bolt head, until the end face of the gripper 6 is completely in contact with the bolt head surface. This passive angle adaptive function ensures comprehensive and effective contact even under non-ideal alignment conditions, guaranteeing reliable transmission of clamping force and torque.

[0030] Based on the workflow of Embodiment 1, in this embodiment, when the gripper 6 extends and contacts the target bolt, if the bolt is tilted, the universal ball joint 7 will first function, causing each gripper 6 to automatically adjust its posture to fully conform to the bolt end face. Subsequently, the main hydraulic telescopic rod 3 drives the gripper 6 to perform radial clamping. At this time, the gripping part with the isosceles triangular cross-section anti-slip texture 61 will tightly engage with the bolt surface. Even when a large rotational torque is applied, this anti-slip structure and multiple points of uniform contact can ensure that there is no relative slippage between the gripper 6 and the bolt, thereby reliably completing the disassembly and assembly operation. Example

[0031] This embodiment, based on the previous two embodiments, focuses on the long-term economic efficiency, control precision, and versatility of the lifting device.

[0032] In some embodiments of this utility model, such as Figure 3 , Figure 4 , Figure 5As shown, the end of the gripper 6 has an L-shaped limiting groove 62 in side view. The limiting groove 62 is detachably connected to a replaceable tooth 63, the purpose of which is to achieve modularity of the gripping component. The direct benefit of this design is that the gripping tooth, as the main wear component, can be replaced quickly and at low cost. Users do not need to replace the entire complex and expensive gripper 6 component, including the auxiliary hydraulic telescopic rod 5, but only need to replace the small replaceable tooth 63, which greatly reduces maintenance costs. The specific connection method is as follows: a slot 64 is formed at the top of the limiting groove 62, and a matching insertion rod 66 is provided at the top of the replaceable tooth 63 for initial positioning; at the same time, a threaded hole 65 is formed at the bottom of the limiting groove 62, and the bottom of the replaceable tooth 63 is finally locked by screwing a matching screw 67 into the threaded hole 65. This "plug-in and screw-lock" method ensures a stable and reliable connection and convenient assembly and disassembly.

[0033] In some embodiments of this invention, to achieve more precise operation, the internal oil circuit of the hydraulic oil pipe 1 is designed to include a first branch pipe and a second branch pipe. The first branch pipe is connected to the cylinder of the main hydraulic telescopic rod 3 and is specifically responsible for radial adjustment; the second branch pipe is connected to the cylinder of all auxiliary hydraulic telescopic rods 5 and is specifically responsible for axial adjustment. Furthermore, the first and second branch pipes are each equipped with independent control valves, and the surface of the hydraulic oil pipe 1 is also equipped with buttons 2 for controlling these two valves respectively. The principle of this scheme is to separate the originally mixed control into two independent channels, allowing the operator to independently and precisely control the gripping range and extension length of the gripper 6 through different buttons 2, enabling the handling of precision operations with more complex requirements for the gripping process.

[0034] In addition, a limiting block can be provided at the end of the main hydraulic telescopic rod 3. Its function is to physically limit the radial extension range of the gripper 6, preventing excessive opening or contraction due to misoperation, thus protecting both the equipment and the workpiece. To enhance versatility, the hydraulic oil pipe 1 is detachably connected to the electric gun body. The hydraulic oil pipe 1 has mounting holes adapted to the end of the electric gun body, and the inner wall of the mounting holes has anti-slip protrusions. Different electric gun bodies can be adapted through the preset mounting holes.

[0035] Before operation, the appropriate replaceable tooth 63 can be easily replaced by unscrewing screw 67, depending on the type or wear condition of the bolt. During operation, the operator can independently control the valves of the first or second branch pipe by pressing different buttons 2 on the surface. For example, pressing one button 2 first controls the second branch pipe, causing the gripper 6 to extend to a predetermined depth; then pressing another button 2 controls the first branch pipe, causing the gripper 6 to slowly retract and precisely clamp the bolt. The entire process is precisely controlled and the actions are separated. The limit block provides protection at the extreme positions. After the operation is completed, the entire disassembly and assembly head can be removed from the electric gun body for maintenance or installed on other, more powerful gun bodies.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The above description is merely an example and illustration of the present utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the present utility model.

Claims

1. An electric gun assembly / disassembly device adaptable to multiple bolt sizes, comprising a hydraulic hose connected to the electric gun body and a telescopic adjustment mechanism, characterized in that, The telescopic adjustment mechanism includes: multiple circumferentially spaced grippers that can extend and retract radially; and a main hydraulic telescopic rod connected to the hydraulic oil pipe for controlling the gripping range of the grippers. The auxiliary hydraulic telescopic rod connected to the gripper is used to adjust the extension length of the gripper; the main hydraulic telescopic rod is slidably connected to the auxiliary hydraulic telescopic rod via a slide rail, and both the main hydraulic telescopic rod and the auxiliary hydraulic telescopic rod are connected to the hydraulic oil inside the hydraulic oil pipe.

2. The apparatus according to claim 1, characterized in that, The main hydraulic telescopic rod includes a cylinder and a piston rod. The end of the cylinder away from the piston rod is fixedly connected to the hydraulic oil pipe, and the end of the piston rod is fixedly connected to the slide rail. The extension and retraction of the piston rod drives the slide rail, the auxiliary hydraulic telescopic rod, and the gripper to move radially, thereby adjusting the gripping range of the gripper.

3. The apparatus according to claim 1, characterized in that, The auxiliary hydraulic telescopic rod corresponds one-to-one with the gripper. The auxiliary hydraulic telescopic rod includes a cylinder and a piston rod. The cylinder is fixedly connected to the slide rail, and the end of the piston rod away from the cylinder is fixedly connected to the gripper. The extension and retraction of the piston rod drives the gripper to move axially, thereby adjusting the extension length of the gripper.

4. The apparatus according to claim 1, characterized in that, The six grippers are evenly distributed around the circumference. Each gripper moves synchronously radially via the slide rail and the main hydraulic telescopic rod, and the end of each gripper is provided with a bolt gripping part with anti-slip texture.

5. The apparatus according to claim 4, characterized in that, The anti-slip texture is composed of vertical grooves parallel to the axis of the gripper, the direction of the grooves is perpendicular to the direction of bolt rotation, and the cross-section of the grooves is an isosceles triangle.

6. The apparatus according to claim 1, characterized in that, A universal ball joint is provided between the slide rail and the auxiliary hydraulic telescopic rod. One end of the universal ball joint is fixedly connected to the slide rail, and the other end is fixedly connected to the auxiliary hydraulic telescopic rod, so that the gripper can swing relative to the slide rail within a range of ±15°.

7. The apparatus according to claim 1, characterized in that, The end of the gripper is formed with a limiting groove that is L-shaped in side view, and the limiting groove is detachably connected to a replaceable tooth.

8. The apparatus according to claim 7, characterized in that, The top of the limiting groove has a slot, the top of the replaceable tooth head is provided with a rod that matches the size of the slot, the bottom of the limiting groove has a threaded hole, the bottom of the replaceable tooth head is provided with a screw that matches the size of the threaded hole, and the screw is threadedly connected to the threaded hole.

9. The apparatus according to claim 1, characterized in that, Also includes any one or more of AC: A. The end of the main hydraulic telescopic rod is provided with a limiting block, which is used to limit the radial extension range of the gripper; B. The hydraulic oil pipe includes a first branch pipe and a second branch pipe. The first branch pipe is connected to the cylinder of the main hydraulic telescopic rod, and the second branch pipe is connected to the cylinder of the auxiliary hydraulic telescopic rod. The first branch pipe and the second branch pipe are respectively provided with independent control valves. C. The surface of the hydraulic oil pipe is also equipped with buttons for controlling the control valves on the first and second branch pipes.

10. The apparatus according to claim 1, characterized in that, The hydraulic oil pipe is detachably connected to the electric gun body. The hydraulic oil pipe is provided with a mounting hole that matches the end of the electric gun body, and the inner wall of the mounting hole is provided with anti-slip protrusions.

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