Dismounting device for large-diameter bolt in narrow space

Abstract

The utility model discloses a dismounting device for a large-diameter bolt in a narrow space, which is characterized in that in a bolt push-out assembly, a pressure transmission module is fixedly arranged on the inner side end face of one side plate of a bow-shaped clamp, and the other side plate of the bow-shaped clamp is in threaded connection with a hexagon bolt through a threaded hole in the middle; the groove-shaped cavity of the cushion block is arranged on the bolt head of the product bolt in a sleeving mode, the threaded end of the product bolt makes contact with the sensing end of the pressure transmission module, the hexagon bolt is screwed to enable pressure to act on the top end of the cushion block, counter-acting force acts on the threaded end of the product bolt through the pressure transmission module, and the product bolt is pushed out. The bolt head generates the displacement of being pushed out in the groove-shaped cavity of the cushion block; the bolt pulling-out assembly is arranged on the bolt head of the product bolt in a sleeving mode through the concave clamping groove in the end, and pulling-out force is applied to the product bolt through the concave clamping groove so that the product bolt can be pulled out of the machine body structure. The utility model solves the problem that the surface and the hole wall of the bolt are damaged due to local deformation of the butt-joint bolt easily caused by the traditional dismounting mode of the bolt.

Description

Technical Field

[0001] This utility model relates to, but is not limited to, the field of aircraft manufacturing technology, and particularly to a device for disassembling large-diameter bolts in confined spaces. Background Technology

[0002] The mating bolts used in aircraft assembly consist of bolts, washers, nuts, and safety pins. Disassembling these bolts and assessing the disassembly force are crucial steps in aircraft bolt assembly.

[0003] The traditional method for disassembling butt bolts involves removing the safety pin and washer, then striking the threaded end of the bolt with a hammer. However, this traditional method relies entirely on worker experience, which can easily cause localized deformation of the butt bolt and damage the bolt surface and hole walls. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned technical problems. This utility model provides a disassembly device for large-diameter bolts in confined spaces, which solves the problem that traditional disassembly methods for butt bolts rely entirely on worker experience, easily causing local deformation of the butt bolts and damage to the bolt surface and hole wall.

[0005] The technical solution of this utility model: This utility model provides a disassembly device for large-diameter bolts in confined spaces, including: a bolt ejection assembly and a bolt extraction assembly;

[0006] The bolt ejection assembly includes: a pad 1 with a grooved cavity structure, an arc-shaped clamp 2, a hexagonal bolt 5, and a pressure transmission module; wherein, the arc-shaped clamp 2 includes two parallel side plates and a middle plate for connecting the two side plates, forming an overall "]" shaped structure; the pressure transmission module is fixedly installed on the inner end face of one side plate, and a threaded hole 4 is opened in the middle of the other side plate, through which a hexagonal bolt 5 is screwed;

[0007] The grooved cavity of the pad 1 is fitted onto the bolt head of the product bolt 11 installed in the machine body structure 3, so that the bottom end of the pad 1 abuts against the machine body structure 3. The bow-shaped clamp 2, which is equipped with the pressure transmission module, is placed on both sides of the machine body structure 3, and the threaded end of the product bolt 11 contacts the sensing end of the pressure transmission module. By tightening the hexagonal bolt 5, the pressure provided by its threaded end is applied to the top of the pad 1. After the pressure is transmitted to the side plate of the bow-shaped clamp 2 where the pressure transmission module is installed, the reaction force is applied to the threaded end of the product bolt 11 through the pressure transmission module, pushing the product bolt 11 out, so that the bolt head is displaced in the grooved cavity of the pad 1.

[0008] The end of the bolt pull-out assembly is provided with a concave groove 12, which is used to fit onto the bolt head of the product bolt 11 that is being pushed out. The product bolt 11 is pulled out by applying a pulling force through the concave groove 12.

[0009] Optionally, in the disassembly device for large-diameter bolts in confined spaces as described above, the pressure transmission module includes: a connecting plate 6, an internal hexagon socket head cap screw 8, a pressure sensor 9, and a top cover 10.

[0010] In this embodiment, multiple connecting plate bolt holes are provided at corresponding positions on the side plate of the connecting plate 6 and the bow-shaped clamp 2 used for installing the pressure transmission module. The connecting plate 6 is fixedly connected to the inner side of the side plate of the bow-shaped clamp 2 by guide bolts. The pressure sensor 9 is connected to the connecting plate 6 by hexagon socket head cap screws 8. The top cover 10 is connected to the end of the pressure sensor 9 by hexagon socket head cap screws 8.

[0011] Optionally, in the disassembly device for large-diameter bolts in confined spaces as described above,

[0012] The outer surface of the top cover 10 has a small recess for tightening the threaded end of the product bolt 11.

[0013] Optionally, in the disassembly device for large-diameter bolts in confined spaces as described above, the bolt pull-out assembly includes: a pull rod 13 and a pull rod nut 14;

[0014] The front end of the pull rod 13 is provided with a concave groove 12, and the threaded rod at the tail end of the pull rod 13 is threaded with a pull rod nut 14.

[0015] The bolt removal assembly uses the concave groove 12 at the front end of the pull rod 13 to engage with the bolt head of the product bolt 11 that has been pushed out, and under the turning action of the pull rod nut 14, the pull rod 13 moves linearly to remove the product bolt 11.

[0016] Optionally, in the disassembly device for large-diameter bolts in confined spaces as described above, the bolt pull-out assembly further includes: a hollow sleeve 15 and a washer 16.

[0017] The pull rod 13 is fitted with a hollow sleeve 15, and a washer 16 is provided between the hollow sleeve 15 and the pull rod nut 14. When the bolt is used to pull out the assembly, one end face of the hollow sleeve 15 abuts against the surface of the machine body structure 3. Under the turning action of the pull rod nut 14, the hollow sleeve 15 pushes against the surface of the machine body structure 3 to generate a reaction force, thereby realizing the linear movement of the pull rod 13.

[0018] Optionally, the disassembly device for large-diameter bolts in confined spaces as described above further includes: a detection module; the detection module includes: a power supply 17, an indicator light 18, and a display screen 19;

[0019] The detection module is connected to the pressure sensor 9 of the pressure transmission module via a signal line to realize the transmission and display of the pushing force value.

[0020] Optionally, in the disassembly device for large-diameter bolts in confined spaces as described above,

[0021] The measurement value of the pressure sensor 9 is matched based on the diameter, preload, and push-out force of the product bolt 11.

[0022] The beneficial effects of this utility model are as follows: This utility model embodiment provides a disassembly device for large-diameter bolts in confined spaces, including: a bolt ejection assembly and a bolt extraction assembly; the bolt ejection assembly is mainly used for ejecting the bolt head. During the ejection process, the bolt head of the product bolt 11 undergoes a slight displacement within the grooved cavity structure of the pad, thereby achieving the ejection of the bolt head; the bolt extraction assembly is mainly used for pulling out the bolt. It is pulled out by using a concave groove 12 fitted onto the bolt head of the ejected product bolt 11, and by tightening the pull rod nut 14 to cause the pull rod 13 and the product bolt 11 to move linearly. The disassembly device provided by this utility model embodiment can be applied in aircraft assembly processes to disassemble large-diameter product bolts in confined spaces. A pressure sensor 9 is selected to match the measurement requirements based on the diameter, preload, and ejection force of the product bolt 11. The bow-shaped clamp 2 is placed on both sides of the machine body structure. Tightening the hexagonal bolts 5 generates a reaction force that acts on the connecting plate of the pressure transmission module, thereby pushing the pressure sensor 9 and the product bolt, thus pushing out the product bolt 11 and transferring the load to the pressure sensor 9. Furthermore, the pressure sensor 9 reads the value through the detection component and records the magnitude of the pushing force required to push out the mating bolt. Compared with the prior art, the disassembly device for large-diameter bolts in confined spaces provided by this utility model embodiment has the following beneficial effects:

[0023] 1) In the process of aircraft assembly, the disassembly device provided in this utility model embodiment is used to push out the bolt head of the product bolt 11 through the bolt push-out component. In conjunction with the bolt pull-out component, the product bolt 11 is pulled out by converting the twisting action into the linear movement of the pull rod 13. That is, it does not require a large operating force or a large operating space.

[0024] 2) The disassembly device provided in this embodiment is used in the aircraft assembly process. The pressure transmission module is equipped with a pressure sensor, which can realize the measurement of the pushing force, improve the controllability and stability of the bolt pushing process, and is suitable for the disassembly requirements of bolts under different working conditions.

[0025] 3) It overcomes the shortcomings of traditional hammering methods for disassembling bolts. Depending on the load, a corresponding pushing force can be applied to the bolts to safely push them out, avoiding damage to the hole wall caused by uneven hammering, thus improving product safety and service life.

[0026] 4) The disassembly device provided in this utility model embodiment has a novel structural design concept, is easy to implement, and has wide applicability. It provides a technical solution for the problem of disassembling docking bolts during assembly in the aerospace field and has extremely high application value and wide applicability. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0028] Figure 1 A schematic diagram of the bolt ejection assembly in the disassembly device for large-diameter bolts in confined spaces provided in an embodiment of this utility model;

[0029] Figure 2 for Figure 1 The illustrated embodiment provides a schematic diagram showing the structural relationship between a pad with a grooved cavity, a product bolt, and a machine body structure in the bolt ejection assembly.

[0030] Figure 3 for Figure 1 A schematic diagram illustrating the assembly relationship between the bow-shaped clamp and the hexagonal bolt in the bolt ejection assembly provided in the illustrated embodiment;

[0031] Figure 4 for Figure 1 The illustrated embodiment provides a schematic diagram of the pressure transmission module in the bolt ejection assembly.

[0032] Figure 5 A schematic diagram of the internal structure of the bolt extraction component in the disassembly device for large-diameter bolts in confined spaces provided in this embodiment of the utility model;

[0033] Figure 6 A schematic diagram of the external structure of the bolt extraction component in the disassembly device for large-diameter bolts in confined spaces provided in an embodiment of this utility model;

[0034] Figure 7 This is a schematic diagram of the detection module in the disassembly device for large-diameter bolts in confined spaces provided in an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1-Padded block, 2-Arch-shaped clamp, 3-Main body structure, 4-Threaded hole, 5-Hex bolt, 6-Connecting plate, 7-Connecting plate bolt hole, 8-Internal hexagonal head screw, 9-Pressure sensor, 10-Top cover, 11-Product bolt, 12-Concave groove, 13-Pull rod, 14-Pull rod nut, 15-Hollow sleeve, 16-Washer, 17-Power supply, 18-Indicator light, 19-Display screen. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0038] As explained in the background section, the disassembly of mating bolts and the assessment of the disassembly force are crucial steps in aircraft bolt assembly. Traditional methods for disassembling mating bolts have been described; however, these methods have the following drawbacks:

[0039] First, traditional disassembly methods rely entirely on worker experience, and the hammering process cannot guarantee uniform hammering force. Uneven hammering force can cause local deformation of the bolts, thus affecting disassembly and easily causing damage to the bolt surface and hole wall. Second, traditional disassembly methods cannot detect the bolt disassembly force during the disassembly process, which can easily cause damage to the product's structure. Finally, traditional disassembly methods cannot disassemble large-diameter bolts in confined spaces due to the large bolt disassembly preload and insufficient hammering space.

[0040] To address the aforementioned problems, this utility model provides a disassembly device for large-diameter bolts in confined spaces, which is applied during aircraft assembly to disassemble large-diameter product bolts within a confined space.

[0041] The present invention provides the following specific embodiments, which can be combined with each other. For the same or similar concepts or processes, they will not be described again in some embodiments.

[0042] Figure 1 This is a schematic diagram of the bolt ejection assembly in the disassembly device for large-diameter bolts in confined spaces provided in an embodiment of the present invention. Figure 2 for Figure 1 The illustrated embodiment provides a schematic diagram showing the structural relationship between a slotted cavity pad, product bolts, and the machine body structure in the bolt ejection assembly. Figure 3 for Figure 1 A schematic diagram illustrating the assembly relationship between the bow-shaped clamp and the hexagonal bolt in the bolt ejection assembly provided in the illustrated embodiment; Figure 5 This is a schematic diagram of the internal structure of the bolt extraction component in the disassembly device for large-diameter bolts in confined spaces provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of the external structure of the bolt extraction component in the disassembly device for large-diameter bolts in confined spaces provided in an embodiment of the present invention.

[0043] like Figures 1 to 3 As shown, the structural components of the disassembly device for large-diameter bolts in confined spaces provided in this embodiment of the present invention include: a bolt ejection assembly and a bolt extraction assembly.

[0044] The bolt ejection assembly provided in this embodiment of the utility model includes: a pad 1 with a grooved cavity, an arc-shaped clamp 2, a hexagonal bolt 5, and a pressure transmission module; wherein, the arc-shaped clamp 2 includes two parallel side plates and a middle plate for connecting the two side plates, forming an overall "]" shaped structure, the pressure transmission module is fixedly installed on the inner end face of one side plate, and a threaded hole 4 is opened in the middle of the other side plate, through which the hexagonal bolt 5 is screwed.

[0045] In this embodiment of the utility model, the bolt ejection assembly uses a spacer 1 with a grooved cavity to fit over the bolt head of the product bolt 11 installed in the body structure 3. The bottom end of the spacer 1 rests against the body structure 3. By placing the bow-shaped clamp 2, which is equipped with a pressure transmission module, on both sides of the body structure 3, the threaded end of the product bolt 11 contacts the sensing end of the pressure transmission module. By tightening the hexagonal bolt 5, the pressure provided by the threaded end acts on the top of the spacer 1. The pressure is transmitted to the side plate on which the pressure transmission module is installed in the bow-shaped clamp 2. The reaction force generated by this side plate acts on the pressure transmission module and on the threaded end of the product bolt 11, thereby ejecting the product bolt 11. The bolt head is displaced within the grooved cavity of the spacer 1, thus ejecting the bolt head of the product bolt 11. At this point, the bolt head of the product bolt 11 is ejected a certain distance from the body structure 3, and the product bolt 11 can then be pulled out using the bolt extraction assembly.

[0046] It should be noted that in this embodiment of the utility model, the bolt ejection assembly is mainly used for ejecting the bolt head. The grooved cavity structure of the pad 1 is fitted on the outside of the bolt head of the product bolt 11, which is used to protect the bolt head of the product bolt 11 and fix the direction of rotation during the tightening of the hexagonal bolt 5. Specifically, the bolt head of the product bolt 11 undergoes a small displacement in the grooved cavity of the pad 1, and the bolt head of the product bolt 11 is effectively protected by the grooved cavity of the pad 1.

[0047] In practice, the outer side of the middle plate of the bow-shaped clamp 2 with the "]" shape is also provided with a handle, which is used by the operator to hold and place it on both sides of the machine body structure 3 where the product disassembly bolt 11 is located, so as to facilitate the picking and placing of the product during work.

[0048] like Figure 5As shown, the bolt pull-out assembly in this embodiment of the present invention is provided with a concave groove 12 at its end, which is used to fit onto the bolt head of the product bolt 11 that is being pushed out. The product bolt 11 is pulled out by applying a pull-out force through the concave groove 12.

[0049] In one implementation of this utility model, an embodiment of the pressure transmission module is provided, such as... Figure 4 As shown, Figure 1 The illustrated embodiment provides a schematic diagram of the pressure transmission module in the bolt ejection assembly. The pressure transmission module in this implementation includes: a connecting plate 6, an internal hexagon head screw 8, a pressure sensor 9, and a top cover 10.

[0050] In this implementation, multiple connecting plate bolt holes are provided at corresponding positions on the side plate of the connecting plate 6 and the bow-shaped clamp 2 used for installing the pressure transmission module; the connecting plate 6 is fixedly connected to the inner side of the side plate of the bow-shaped clamp 2 by guide bolts, the pressure sensor 9 is connected to the connecting plate 6 by hexagon socket head cap screws 8, and the top cover 10 is connected to the end of the pressure sensor 9 by hexagon socket head cap screws 8.

[0051] In specific implementation, the top cover 10 is provided with screw holes for connecting the internal hexagonal head screw 8 and the pressure sensor 9. The outer upper surface of the top cover 10 has a small indentation for tightening the bolt thread end. The connecting plate 6 is provided with screw holes and bolt holes. The screw holes are connected to the pressure sensor 9 through the internal hexagonal head screw 8, and the bolt holes are used to connect the guide bolt and the bow-shaped clamp 2 to realize the transmission of pressure.

[0052] It should be noted that when using the bolt ejection assembly provided in this embodiment of the present invention, the threaded end of the product bolt 11 (i.e. the bolt to be ejected) is in contact with the top cover 10. Before the product bolt 11 is ejected, its bolt head is pressed against the body structure 3, making it difficult to pull it out with existing tools. By using the action and reaction forces achieved by the pad block 1, the bow-shaped clamp 2, the pressure transmission module and the hexagonal bolt 5 in the bolt ejection assembly provided in this embodiment of the present invention, the product bolt 11 is ejected from the body structure 3 by a small displacement, so that its bolt head is separated from the body structure 3, and thus it can be pulled out from the body structure 3 by the bolt ejection assembly.

[0053] In one implementation of this utility model, an embodiment of the bolt removal assembly is provided, such as... Figure 5 and Figure 6 As shown, the bolt removal assembly in this implementation includes a pull rod 13 and a pull rod nut 14.

[0054] In this implementation, the front end of the pull rod 13 is provided with a concave groove 12, and the threaded rod at the tail end of the pull rod 13 is threadedly connected to the pull rod nut 14. The bolt pulling assembly is fitted onto the bolt head of the product bolt 11 that has been pushed out by the concave groove 12 at the front end of the pull rod 13, and under the turning action of the pull rod nut 14, the pull rod 13 moves linearly to pull out the product bolt 11, thus realizing the smooth removal of the product bolt 11 from the machine body structure 3.

[0055] The bolt removal assembly of this implementation may further include a hollow sleeve 15 and a washer 16. The hollow sleeve 15 is sleeved on the outside of the pull rod 13, and a washer 16 is placed between the hollow sleeve 15 and the pull rod nut 14. When using this bolt removal assembly, one end face of the hollow sleeve 15 abuts against the surface of the machine body structure 3. Under the tightening action of the pull rod nut 14, the hollow sleeve 15 generates a reaction force against the surface of the machine body structure 3, achieving linear movement of the pull rod 13.

[0056] In this embodiment of the utility model, the bolt removal assembly is mainly used for removing bolts. By tightening the pull rod nut 14, the bolt head of the product bolt 11 that is pushed out is embedded in the concave groove 12 at the front end of the pull rod 13. The cavity sleeve 15 pushes against the surface of the machine body structure 3 to generate a reaction force, thereby realizing the outward displacement of the pull rod 13, so that the concave groove 12 at the front end of the pull rod 13 drives the product bolt 11 to be pulled out smoothly.

[0057] Based on the disassembly device for large-diameter bolts in confined spaces provided in the above embodiments of this utility model, in a preferred implementation, the disassembly device may further include: a detection module. For example... Figure 7 The diagram shown is a structural schematic of the detection module in the disassembly device for large-diameter bolts in confined spaces provided in an embodiment of this utility model.

[0058] The detection module in this implementation includes a power supply 17, an indicator light 18, and a display screen 19. The detection module is connected to the pressure sensor 9 of the pressure transmission module via a signal line to transmit and display the pushing force value.

[0059] The disassembly device for large-diameter bolts in confined spaces provided in this embodiment of the invention mainly includes: a bolt ejection assembly and a bolt extraction assembly. The bolt ejection assembly is mainly used for ejecting the bolt head. During the ejection process, the bolt head of the product bolt 11 undergoes a slight displacement within the grooved cavity structure of the pad, thereby achieving the ejection of the bolt head. The bolt extraction assembly is mainly used for pulling out the bolt. It is pulled out by using the concave groove 12 fitted onto the bolt head of the ejected product bolt 11, and by turning the pull rod nut 14 to cause the pull rod 13 and the product bolt 11 to move linearly. The disassembly device provided in this embodiment of the invention can be applied to the aircraft assembly process to disassemble large-diameter product bolts in confined spaces. A pressure sensor 9 is selected to match the measurement requirements based on the diameter, preload, and ejection force of the product bolt 11. The bow-shaped clamp 2 is placed on both sides of the machine body structure. Tightening the hexagonal bolts 5 generates a reaction force that acts on the connecting plate of the pressure transmission module, thereby pushing the pressure sensor 9 and the product bolt, thus pushing out the product bolt 11 and transferring the load to the pressure sensor 9. Furthermore, the pressure sensor 9 reads the value through the detection component and records the magnitude of the pushing force required to push out the mating bolt. Compared with the prior art, the disassembly device for large-diameter bolts in confined spaces provided by this utility model embodiment has the following beneficial effects:

[0060] 1) In the process of aircraft assembly, the disassembly device provided in this utility model embodiment is used to push out the bolt head of the product bolt 11 through the bolt push-out component. In conjunction with the bolt pull-out component, the product bolt 11 is pulled out by converting the twisting action into the linear movement of the pull rod 13. That is, it does not require a large operating force or a large operating space.

[0061] 2) The disassembly device provided in this embodiment is used in the aircraft assembly process. The pressure transmission module is equipped with a pressure sensor, which can realize the measurement of the pushing force, improve the controllability and stability of the bolt pushing process, and is suitable for the disassembly requirements of bolts under different working conditions.

[0062] 3) It overcomes the shortcomings of traditional hammering methods for disassembling bolts. Depending on the load, a corresponding pushing force can be applied to the bolts to safely push them out, avoiding damage to the hole wall caused by uneven hammering, thus improving product safety and service life.

[0063] 4) The disassembly device provided in this utility model embodiment has a novel structural design concept, is easy to implement, and has wide applicability. It provides a technical solution for the problem of disassembling docking bolts during assembly in the aerospace field and has extremely high application value and wide applicability.

[0064] The following describes the usage of the disassembly device for large-diameter bolts in confined spaces provided in this embodiment of the invention, including the following steps:

[0065] To disassemble a typical bolted connection structure in the aircraft assembly process, first place a pad 1 with a grooved cavity on the bolt head of the product bolt 11, and fit the grooved cavity onto the outside of the bolt head of the product bolt 11, leaving a certain space. Place the bow-shaped clamp 2 on both sides of the fuselage structure 3. Connect the connecting plate bolt hole 7 on the connecting plate 6 of the pressure transmission module to one side plate of the bow-shaped clamp 2 through the guide bolt. Connect the pressure sensor 9 of the pressure transmission module to the connecting plate 6 through the hexagon socket head cap screw 8. Connect the top cover 10 of the pressure transmission module to the pressure sensor 9 through the hexagon socket head cap screw 8.

[0066] By tightening the hexagonal bolt 5, the force applied by the hexagonal bolt 5 is applied to the pad 1 fitted on the bolt head of the product bolt 11, and then sequentially transmitted to the connecting plate 6 of the pressure transmission module and one side plate of the bow-shaped clamp 2. The bow-shaped clamp 2 generates a reaction force acting on the connecting plate 6 of the pressure transmission module, pushing the pressure sensor 9 and the top cover 10, thereby achieving axial displacement of the ejected bolt 11, resulting in a small displacement of 5-8mm for the ejected bolt 11. During this process, the pressure sensor 9 of the pressure transmission module reads the pressure value through the display screen 19 of the detection component, recording the magnitude of the ejection force required for the ejected bolt 11.

[0067] Then, remove the pad 1, bow-shaped clamp 2, and hex bolt 5, install the bolt extraction assembly, and engage the concave groove 12 at the front end of the pull rod 13 in the bolt extraction assembly with the bolt head of the product bolt 11. The threaded rod at the tail end of the pull rod 13 is threadedly connected to the hex nut 14. The hollow sleeve 15 is placed against the surface of the machine body structure 3, and a washer 16 is placed on the upper part of the hollow sleeve 15. The hollow sleeve 15 and the washer 16 are connected through the pull rod 13. By tightening the pull rod nut 14 on the upper part of the pull rod 13, the pull rod and the bolt head of the product bolt 11 are moved, thus enabling the bolt to be successfully extracted.

[0068] By using the above method, appropriate disassembly force components can be selected according to the bolt diameter, preload, and ejection force, so as to realize the ejection of bolts and the detection of force values ​​under different working conditions.

[0069] Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. A device for disassembling large-diameter bolts in confined spaces, characterized in that, include: Bolt ejection assembly and bolt pullout assembly; The bolt ejection assembly includes: a pad (1) with a grooved cavity structure, an arc-shaped clamp (2), a hexagonal bolt (5), and a pressure transmission module; wherein the arc-shaped clamp (2) includes two parallel side plates and a middle plate for connecting the two side plates, forming an overall "]" shaped structure; the pressure transmission module is fixedly installed on the inner end face of one side plate, and a threaded hole (4) is opened in the middle of the other side plate, through which a hexagonal bolt (5) is screwed; The grooved cavity of the pad (1) is fitted onto the bolt head of the product bolt (11) installed in the machine body structure (3), so that the bottom end of the pad (1) abuts against the machine body structure (3). The bow-shaped clamp (2) with the pressure transmission module is placed on both sides of the machine body structure (3), and the threaded end of the product bolt (11) contacts the sensing end of the pressure transmission module. By turning the hexagonal bolt (5), the pressure provided by its threaded end is applied to the top of the pad (1). After the pressure is transmitted to the side plate of the bow-shaped clamp (2) where the pressure transmission module is installed, the reaction force is applied to the threaded end of the product bolt (11) through the pressure transmission module, pushing the product bolt (11) out, so that the bolt head is displaced in the grooved cavity of the pad (1). The end of the bolt pull-out assembly is provided with a concave groove (12) for fitting onto the bolt head of the product bolt (11) that is being pushed out. The product bolt (11) is pulled out by applying a pulling force through the concave groove (12) to pull the product bolt (11) out of the body structure (3).

2. The disassembly device for large-diameter bolts in confined spaces according to claim 1, characterized in that, The pressure transmission module includes: a connecting plate (6), an internal hexagon socket head cap screw (8), a pressure sensor (9), and a top cover (10); In this case, multiple connecting plate bolt holes are provided at the corresponding positions of the side plate of the connecting plate (6) and the bow-shaped clamp (2) used for installing the pressure transmission module. The connecting plate (6) is fixedly connected to the inner side of the side plate of the bow-shaped clamp (2) by guide bolts. The pressure sensor (9) is connected to the connecting plate (6) by hexagonal head screws (8). The top cover (10) is connected to the end of the pressure sensor (9) by hexagonal head screws (8).

3. The disassembly device for large-diameter bolts in confined spaces according to claim 2, characterized in that, The outer surface of the top cover (10) has a small recess for tightening the threaded end of the product bolt (11).

4. The disassembly device for large-diameter bolts in confined spaces according to claim 1, characterized in that, The bolt removal assembly includes: a pull rod (13) and a pull rod nut (14); The front end of the pull rod (13) is provided with a concave groove (12), and the threaded rod at the tail end of the pull rod (13) is threaded with a pull rod nut (14); The bolt pull-out assembly is engaged with the product bolt (11) by the concave groove (12) at the front end of the pull rod (13), and under the turning action of the pull rod nut (14), the pull rod (13) moves linearly to pull out the product bolt (11).

5. The disassembly device for large-diameter bolts in confined spaces according to claim 4, characterized in that, The bolt removal assembly further includes: a hollow sleeve (15) and a washer (16); The pull rod (13) is fitted with a hollow sleeve (15), and a washer (16) is provided between the hollow sleeve (15) and the pull rod nut (14). When the assembly is pulled out by the bolt, one end face of the hollow sleeve (15) abuts against the surface of the machine body structure (3). Under the turning action of the pull rod nut (14), the hollow sleeve (15) pushes against the surface of the machine body structure (3) to generate a reaction force, thereby realizing the linear movement of the pull rod (13).

6. The disassembly device for large-diameter bolts in confined spaces according to any one of claims 1 to 5, characterized in that, Also includes: Detection module; The detection module includes: a power supply (17), an indicator light (18), and a display screen (19); The detection module is connected to the pressure sensor (9) of the pressure transmission module via a signal line to realize the transmission and display of the pushing force value.

7. The disassembly device for large-diameter bolts in confined spaces according to claim 6, characterized in that, The measurement value of the pressure sensor (9) is matched based on the diameter, preload, and push-out force of the product bolt (11).

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