A bolt removal tool

Abstract

The present invention discloses a technical field of fastener removal, a bolt removal tool, including a shell and a heating mechanism, a hydraulic cylinder is provided on one side wall of the shell, the hydraulic cylinder is connected to a hydraulic telescopic rod, the end of the hydraulic telescopic rod is connected to a first mounting plate, the side of the first mounting plate facing away from the hydraulic telescopic rod is connected to a first removal knife, both ends of the first mounting plate are connected to push rods, the adjacent sides of the two push rods are provided with teeth, a gear meshing with the teeth is rotatably connected in the shell; a second mounting plate is slidably connected in the shell, both ends of the second mounting plate are connected to a force plate, the force plate is also provided with teeth meshing with the gear, and one side of the second mounting plate is connected to a second removal knife; the heating mechanism is located directly below the through hole and connected to the shell, and the heating mechanism is provided with a heating chamber for the bolt to pass through. In one operation, both sides of the bolt are cut, and the bolt removal tool has a simple structure, is more convenient to use, and has a higher efficiency in removing bolts.

Description

Technical Field

[0001] The invention belongs to the technical field of fastener removal, and in particular relates to a bolt removal tool. Background Art

[0002] After long-term use, some bolts are prone to rust and are easily connected to the installation parts. At this time, it is difficult to rotate the bolts, which makes it difficult or impossible to remove the bolts. In order to remove the bolts, people usually use bolt removal tools to remove the bolts. Commonly used bolt removal tools have a heating function. The bolts are heated before being cut and removed. However, the bolt removal tools currently on the market still have the following problems:

[0003] 1. Existing bolt removal tools can only cut the bolt in one direction at a time during the removal process. However, cutting in at least two directions is required to remove the bolt. Therefore, the removal tool needs to be removed from the bolt, and then the tool needs to be rotated to change its position and the cutting process needs to be repeated, which is not conducive to improving the efficiency of bolt removal.

[0004] 2. Conventional bolt removal tools cannot clamp and remove the removed bolts after removing them. The bolts are easy to fall off, and the staff need to bend over to pick them up. Therefore, it is not convenient and is not conducive to improving work efficiency. Summary of the Invention

[0005] The present invention is intended to provide a bolt removal tool to solve the problem that the bolt removal tool in the prior art can only cut one side of the bolt at a time.

[0006] A bolt removal tool in this solution includes a housing and a heating mechanism. A hydraulic cylinder is provided on a side wall of the housing. The hydraulic cylinder is connected to a hydraulic telescopic rod. The end of the hydraulic telescopic rod is connected to a first mounting plate. A first removal knife is connected to the side of the first mounting plate facing away from the hydraulic telescopic rod. Push rods are connected to both ends of the first mounting plate. Adjacent sides of the two push rods are provided with teeth. A gear meshing with the teeth is rotatably connected to the housing.

[0007] A second mounting plate located on the opposite side of the hydraulic cylinder is slidably connected in the housing, and both ends of the second mounting plate are connected to a force-bearing plate, which is also provided with tooth patterns that mesh with the gears, and a second demolition knife is connected to the side of the second mounting plate adjacent to the hydraulic cylinder;

[0008] A through hole is provided at the bottom of the shell, and the through hole is located between the first demolition knife and the second demolition knife. The heating mechanism is located directly below the through hole and connected to the shell. A heating cavity is provided on the heating mechanism for the bolt to pass through.

[0009] The working principle of this solution is: after the hydraulic cylinder is started, the hydraulic telescopic rod is telescopically moved. Since there is a linkage relationship between the first mounting plate, the push rod, the gear, the force plate and the second mounting plate, when the hydraulic telescopic rod is extended, the first demolition knife on the first mounting plate and the second demolition knife on the second mounting plate will move toward each other.

[0010] After the bolt to be removed enters the heating chamber for heating, the bolt is passed through the through hole, and then the first removal knife and the second removal knife are moved toward each other to cut the bolt.

[0011] The beneficial technical effect of this solution is that it enables both sides of the bolt to be cut in one operation. Compared with the bolt removal tools in the prior art, it is more convenient to use and has a higher efficiency in removing the bolts.

[0012] Furthermore, two pusher plates are rotatably connected to the edge of the through hole. The two pusher plates are located on either side of the extension and retraction direction of the hydraulic telescopic rod, and a return spring is connected between the pusher plates and the inner wall of the housing. Under the reset action of the return spring, the pusher plates rotate inward, thereby rotating the two pusher plates inward, clamping the removed bolts and preventing them from falling. This makes the bolt removal tool more convenient for removing removed bolts and prevents them from falling.

[0013] Furthermore, the side of the push plate facing away from the return spring is arc-shaped and has clamping strips evenly distributed from top to bottom. Increasing the roughness of the push plate surface is more conducive to engaging the removed bolts to prevent them from falling.

[0014] Furthermore, a discharge hole is provided on the top of the shell, and a retractable material receiving frame is rotatably connected to the top of the shell. When the shell is turned over, the removed bolts can fall into the material receiving frame for collection.

[0015] Furthermore, the material receiving frame includes a first cover plate and a second cover plate, with foldable baffles connected between the edges of three sides of the second cover plate and the second cover plate. An opening for bolts to enter is formed between the second cover plate, the second cover plate, and the side of the baffle plate near the top of the housing. This structure is simple, easy to store, and highly secure.

[0016] Furthermore, the baffle is a metal mesh structure folded around a center line.

[0017] Furthermore, a limit plate is provided in the housing, and a slot is provided on the second mounting plate for the limit plate to be engaged, and the second mounting plate is slidably connected to the limit plate via the slot. The limit plate limits the sliding path of the second mounting plate, making the sliding of the second mounting plate smoother.

[0018] Furthermore, the heating mechanism includes a heating box, a heater is provided in the heating box, an electromagnetic heating coil is provided on the inner side of the heating cavity, and an insulating tube is provided on the outer side of the electromagnetic heating coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall right side structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall left side structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall bottom-up structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the housing of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the push rod and the second mounting plate of the present invention;

[0024] Figure 6 This is a schematic diagram of the internal structure of the heating box of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection structure between the second top cover and the first top cover of the present invention;

[0026] Figure 8 This is a schematic diagram of the connection structure between the push plate and the shell of the present invention. DETAILED DESCRIPTION

[0027] The following is further described in detail through specific implementation methods:

[0028] The figure marks in the drawings of the specification include: shell 1, handle 2, heating box 3, micro hydraulic cylinder 4, hydraulic telescopic rod 5, first mounting plate 6, first dismantling knife 7, push rod 8, pushing tooth pattern 9, gear 10, second mounting plate 11, force plate 12, limit plate 13, second dismantling knife 14, dismantling baffle 15, force rack 16, heater 17, electromagnetic heating ring 18, insulation tube 19, push plate 20, force push strip 21, reset spring 22, hinge 23, first top cover 24, metal mesh plate 25, second top cover 26, buckle 27, rotating shaft 28.

[0029] See the examples Figures 1 to 8, a bolt removal tool, comprising a shell 1, a heating box 3, a micro hydraulic cylinder 4, a first removal knife 7 and an electromagnetic heating ring 18. In order to make the bolt removal tool have a better effect on bolt removal, a handle 2 is welded on one side of the shell 1, and a heating box 3 is connected to the bottom of the shell 1. A through hole communicating with the heating box 3 is opened at the bottom of the shell 1. A micro hydraulic cylinder 4 is fixedly installed on one side wall of the interior of the shell 1, and a hydraulic telescopic rod 5 is connected to one side of the micro hydraulic cylinder 4. The end of the hydraulic telescopic rod 5 is fixedly installed with a first mounting plate 6, and the side wall of the first mounting plate 6 is connected to the first removal knife 7 by screws. The two ends of the first mounting plate 6 are connected to push rods 8 perpendicular to it, and a push tooth pattern 9 is provided on the adjacent side of the two push rods 8. Two gears 10 meshing with the push tooth pattern 9 are rotatably connected to the inside of the shell 1. The two push rods 8 are symmetrically distributed about the central axis of the first mounting plate 6. At the same time, the first mounting plate 6 and the shell 1 constitute a sliding structure, and the push tooth pattern 9 opened by the push rod 8 facilitates the push rod 8 to drive the gear 10 to rotate.

[0030] The other side of the inner belt of the shell 1 is connected to a second mounting plate 11, and the internal snap connection of the second mounting plate 11 is connected to a limiting plate 13, and the limiting plate 13 is fixed to the bottom of the shell 1, and the two ends of the second mounting plate 11 are connected to a force-bearing plate 12, and the force-bearing plate 12 is provided with a force-bearing tooth pattern 16 that meshes with the gear 10, and one side of the second mounting plate 11 is connected to a second dismantling knife 14 by a screw, through the force-bearing rack 16 of the force-bearing plate 12, so that the force-bearing plate 12 can push the second mounting plate 11 to slide when the gear 10 rotates, and the second dismantling knife 14 and the first dismantling knife 7 are symmetrically distributed, and the second mounting plate 11 and the first mounting plate 6 form a linkage structure. Through the linkage structure formed by the second mounting plate 11 and the first mounting plate 6, the symmetrically arranged second dismantling knife 14 and the first dismantling knife 7 can remove and cut the bolts from both sides, so that the bolt removal tool has a better removal effect on the bolts, which is conducive to improving the removal efficiency of the bolt removal tool for the bolts.

[0031] The interior of the housing 1 is connected to a removal baffle 15, which is connected to the housing 1 by welding. The removal baffles 15 are symmetrically distributed inside the housing 1, and the side of the removal baffle 15 is arranged in an arc-shaped structure. The removal baffle 15 is provided to facilitate blocking the removed bolts and facilitate the bolts to slide out of the bolt removal tool. The second mounting plate 11 is connected to the force plate 12 by welding.

[0032] In order to make the bolt removal tool have a better heating effect on the bolt, a heater 17 is fixedly installed inside the heating box 3, an electromagnetic heating ring 18 is fixedly installed on one side of the heater 17, and an insulating tube 19 is fixedly installed inside the heating box 3, and the insulating tube 19 and the heating box 3 form an integrated structure. Through the provided insulating tube 19, the temperature of the electromagnetic heating ring 18 heating the bolt can be isolated and concentrated, so that the bolt removal tool has a better heating effect on the bolt, which facilitates the subsequent removal of the bolt by the bolt removal tool.

[0033] In order to make it easier to remove the bolts using the bolt removal tool, a rotating shaft 28 is provided on the edge of the internal through hole of the shell 1, and a push plate 20 is connected above the rotating shaft 28. A return spring 22 is welded to the outer side of the push plate 20, and a force-bearing push bar 21 is welded to the inner side of the push plate 20. The push plate 20 is tilted inside the shell 1, and the return spring 22 of the push plate 20 facilitates the rotation and reset of the push plate 20 inside the shell 1. The push plate 20 and the shell 1 form a rotating structure, and the inner side of the push plate 20 is arranged in an arc-shaped structure, and the push plate 20 is symmetrically distributed about the central axis of the shell 1.

[0034] In order to enable the bolt removal tool to collect the removed bolts, a discharge hole is provided above the shell 1, and a hinge 23 is provided at the top of the shell 1, and the hinge 23 is connected to a first top cover 24, and a metal mesh plate 25 is welded above the first top cover 24, and a second top cover 26 is welded above the metal mesh plate 25, and a buckle 27 is welded above the second top cover 26. The metal mesh plate 25 provided above the first top cover 24 facilitates the connection and separation of the first top cover 24 and the second top cover 26, and the second top cover 26 and the metal mesh plate 25 form a rotating structure, and the metal mesh plate 25 is elastically arranged, and the second top cover 26 has a snap-fit structure with the shell 1, and the rotating structure formed by the second top cover 26 and the metal mesh plate 25 allows the second top cover 26 to be opened above the first top cover 24, so that the user can pour the removed bolts onto the second top cover 26 and the metal mesh plate 25 inside the first top cover 24, so that the bolt removal tool can collect the removed bolts more conveniently.

[0035] Working principle: When the bolt removal tool is needed to remove the bolt, the user first puts the heating box of the bolt removal tool over the bolt, then powers on the bolt removal tool to start the heater 17 in the heating box 3, and the heater 17 heats the bolt through the electromagnetic heating ring 18, which facilitates the subsequent removal of the bolt by the bolt removal tool, and then the user moves the bolt removal tool to position the bolt in the middle of the shell 1. At this time, the push plate 20 will be squeezed to both sides by the bolt and rotated, and then the user starts the micro hydraulic cylinder 4 to push the first mounting plate 6 to slide inside the shell 1 through the hydraulic telescopic rod 5, and then the push rod 8 on the outside of the first mounting plate 6 will drive the gear 10 to rotate, so that the force plate 12 meshing with the gear 10 can push the second mounting plate 11 to slide inside the shell 1, and at this time, the first removal knife 7 on the outside of the first mounting plate 6 will cut the bolt from two directions with the second removal knife 14 on the outside of the symmetrically arranged second mounting plate 11, so that the bolt removal tool has a better removal effect on the bolt, which is beneficial to improve the removal efficiency of the bolt removal tool for the bolt.

[0036] After the bolt is removed, the user moves the bolt removal tool. At this time, the push plate 20 will rotate inward under the reset action of the reset spring 22, thereby causing the two sets of push plates 20 to rotate inward. The force-bearing push strips 21 on the inner side of the push plate 20 increase friction, clamping the removed bolt, which can prevent the high-temperature bolt from falling, thereby making it easier to remove the removed bolt and the nut on it, which is conducive to improving the user experience of the bolt removal tool.

[0037] When the bolt removal tool carries the removed bolt and is separated from the part where the bolt is installed, the user rotates the bolt removal tool. At this time, the second top cover 26 will rotate on the outside of the metal mesh plate 25, so that the first top cover 24 is opened on the outside of the second top cover 26. Then the bolts removed from the inside of the shell 1 will slide out from the inside of the shell 1 to above the metal mesh plate 25 on the inside of the second top cover 26 and the first top cover 24, thereby making it more convenient for the bolt removal tool to collect the removed bolts, which is conducive to improving the functionality of the bolt removal tool. The above is the working process of the entire device, and the contents not described in detail in this manual belong to the existing technology known to professional and technical personnel in this field.

Claims

1. A bolt removal tool comprising a housing and a heating mechanism, characterized in that: A hydraulic cylinder is provided on one side wall of the housing, the hydraulic cylinder is connected to a hydraulic telescopic rod, the end of the hydraulic telescopic rod is connected to a first mounting plate, a first demolition knife is connected to a side of the first mounting plate facing away from the hydraulic telescopic rod, push rods are connected to both ends of the first mounting plate, adjacent sides of the two push rods are provided with teeth, and a gear meshing with the teeth is rotatably connected in the housing; A second mounting plate located on the opposite side of the hydraulic cylinder is slidably connected in the housing, and both ends of the second mounting plate are connected to a force-bearing plate, which is also provided with tooth patterns that mesh with the gears, and a second demolition knife is connected to the side of the second mounting plate adjacent to the hydraulic cylinder; A through hole is provided at the bottom of the shell, and the through hole is located between the first demolition knife and the second demolition knife. The heating mechanism is located directly below the through hole and connected to the shell. The heating mechanism is provided with a heating cavity for the bolt to pass through. The edge of the through hole is rotatably connected to two push plates, the two push plates are located on both sides of the telescopic direction of the hydraulic telescopic rod, and a return spring is connected between the push plates and the inner wall of the shell.

2. A bolt removal tool according to claim 1, characterized in that: The side of the push plate facing away from the return spring is arc-shaped and has clamping strips evenly distributed from top to bottom.

3. A bolt removal tool according to claim 2, characterized in that: A material discharge hole is provided on the top of the shell body, and a retractable material receiving frame is rotatably connected to the top of the shell body.

4. A bolt removal tool according to claim 3, characterized in that: The material receiving frame includes a first cover plate and a second cover plate, and a foldable baffle is connected between the edges of the second cover plate and three sides of the second cover plate. An opening for bolts to enter is formed between the second cover plate, the second cover plate and the side of the baffle close to the top of the shell.

5. The bolt removal tool according to claim 4, characterized in that: The baffle is a metal mesh structure folded around a center line.

6. A bolt removal tool according to any one of claims 1 to 5, characterized in that: A limiting plate is provided in the shell, and a slot for the limiting plate to be inserted is provided on the second mounting plate. The second mounting plate is slidably connected to the limiting plate via the slot.

7. The bolt removal tool according to any one of claims 1 to 5, characterized in that: The heating mechanism comprises a heating box, a heater is arranged in the heating box, an electromagnetic heating ring is arranged on the inner side of the heating cavity, and an insulating tube is arranged on the outer side of the electromagnetic heating ring.

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