Magnetic sleeve for narrow space and bolt dismounting method

Abstract

The invention discloses a magnetic sleeve for a narrow space, which comprises a cylindrical magnetic suction base, the inner wall of the magnetic suction base is in threaded connection with a cylindrical internal rotation base, a columnar rotating rod penetrates through the closed end face of the internal rotation base, and a dismounting assembly is arranged at one end, located in the internal rotation base, of the rotating rod. The outer wall of the rotating rod in the internal rotation base is sleeved with a spring top cover, the spring top cover is located between the internal rotation base and the rotating rod, a round wire spring is fixedly connected between the spring top cover and the internal rotation base, the outer side of the rotating rod is sleeved with the round wire spring, and a connecting mechanism is arranged at the end, away from the internal rotation base, of the rotating rod. Meanwhile, the invention further discloses a bolt dismounting method using the magnetic sleeve. The magnetic sleeve can be fixed to the surface of a workpiece through magnetic force, additional fixing by an operator is not needed, and meanwhile a bolt can be attracted into the sleeve after being detached, so that the bolt is prevented from falling into a dead corner of a mechanical device.

Description

Technical Field

[0001] The invention belongs to the technical field of assembly and maintenance tools, relates to a magnetic sleeve used in a narrow space, and also relates to a bolt disassembly method using the sleeve. Background Art

[0002] In the assembly and maintenance of mechanical equipment, disassembly and installation of parts are basic and frequent operations. Commonly used tools such as open-end wrenches, mechanical screwdrivers, hexagonal wrenches, etc., although they can cope with the disassembly needs of most parts, we often encounter some difficulties in actual operation. For example, due to the design limitations of the internal space of the equipment, some spaces are narrow and difficult for the operator's hands to enter, which brings great inconvenience to the use of disassembly tools such as screwdrivers or hexagonal wrenches. Secondly, operating in a small space not only increases the difficulty of operation, but also makes it easy for screws to slip and fall into the equipment due to improper force. Tools that fall out of hand or disassembled bolts are sometimes easily stuck in the dead corners of mechanical equipment and cannot be taken out, and may also cause damage to other parts inside the equipment. It also increases the time to find and clean the screws and reduces work efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a magnetic sleeve for narrow spaces, which solves the problem that it is difficult for workers to enter the narrow space to operate during the removal of bolts, and the fallen bolts are easily stuck in the dead corners of mechanical equipment.

[0004] The technical solution adopted by the present invention is that it includes a cylindrical magnetic base, the inner wall of the magnetic base is connected to a barrel-shaped inward-rotating base through a thread, the closed end surface of the inward-rotating base is penetrated by a columnar rotating rod, and a disassembly assembly is provided at one end of the rotating rod located in the inward-rotating base, a spring top cover is sleeved on the outer wall of the rotating rod in the inward-rotating base, and the spring top cover is located between the inward-rotating base and the rotating rod, a round wire spring is fixedly connected between the spring top cover and the inward-rotating base, and the round wire spring is sleeved on the outside of the rotating rod, and a connecting mechanism is provided at one end of the rotating rod away from the inward-rotating base.

[0005] The present invention is also characterized in that: The end surface of the magnetic base on the same side as the disassembly component is provided with a plurality of storage grooves, and a locking magnet is fixedly connected in each storage groove.

[0006] The disassembly assembly comprises a square first connecting groove which is opened at one end of the rotating rod located in the inner rotating base, a plurality of ball head plungers are fixedly connected to the side wall of the first connecting groove, and a replaceable tool head is clamped in the first connecting groove.

[0007] The connecting mechanism includes a square second connecting groove opened on the end face of the rotating rod away from the inward rotating base, a coaxial circular groove is opened on a group of inner walls opposite to the second connecting groove, the outer edge of the end face where the second connecting groove is located is provided with anti-slip grooves, and the outer wall on the rotating rod corresponding to the second connecting groove is composed of several groups of parallel planes.

[0008] A limiting groove is radially arranged in the middle section of the rotating rod, and a group of limiting bolts are fixedly connected in the limiting groove.

[0009] A plurality of fixed magnets are evenly fixed to the side wall of the magnetic base.

[0010] Both the locking magnet and the fixing magnet are neodymium magnets.

[0011] Another technical solution adopted by the present invention is a method for disassembling a bolt, which is specifically implemented according to the following steps: Step 1: Rotate the inward-rotating base to extend the disassembly assembly from the magnetic base, and then adsorb the sleeve onto the surface of the workpiece where the bolt to be disassembled is located through the magnetic base, and clamp the disassembly assembly onto the bolt to be disassembled; Step 2: Connect the disassembly tool to the sleeve through the connecting mechanism, rotate the disassembly tool to disassemble the bolt; Step 3: After the bolt is removed from the workpiece, rotate the inward rotation base toward the side away from the magnetic base, then separate the removal tool from the device and remove the bolt together with the sleeve from the workpiece.

[0012] In step 2, when the bolt to be removed is loosened, the bolt can be removed by manually rotating the rotating rod.

[0013] If the stroke of disassembling the assembly in step 2 is not enough to accommodate the bolt, the inward rotating base can be rotated toward the side away from the magnetic base to extend the stroke of disassembling the assembly.

[0014] The beneficial effects of the present invention are: 1. The present invention fixes the magnetic sleeve on the base surface where the bolt to be removed is located through magnetic force, so that the replaceable tool head is stably connected to the bolt to be removed. During the bolt removal process, the operator only needs to rotate the removal tool without stabilizing the magnetic sleeve, so that the operator can complete the removal of the bolt in a narrow space with one hand.

[0015] 2. During the bolt removal process, the present invention provides axial force for the replaceable tool head through a round wire spring to prevent the connection between the bolt and the replaceable tool head from loosening during removal. At the same time, after the bolt is removed, the bolt is adsorbed in the magnetic base under the action of the fixed magnet to prevent the bolt from falling into the dead corner of the mechanical device and affecting the operation of the mechanical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the external structure of the magnetic sleeve used in a narrow space of the present invention; Figure 2 is a cross-sectional view of a magnetic sleeve for use in a narrow space according to the present invention; Figure 3 It is a schematic diagram of the structure of the rotating rod in the present invention; Figure 4 It is a structural schematic diagram of the magnetic base in the present invention.

[0017] In the figure: 1. Magnetic base; 2. Inward rotating base; 3. Rotating rod; 4. Disassembly assembly; 5. Spring top cover; 6. Round wire spring; 7. Connecting mechanism; 8. Storage slot; 9. Locking magnet; 10. First connecting slot; 11. Ball plunger; 12. Interchangeable tool head; 13. Second connecting slot; 14. Anti-slip groove; 15. Limiting slot; 16. Limiting bolt; 17. Fixing magnet. DETAILED DESCRIPTION

[0018] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Embodiment 1: like Figure 1 and Figure 2 As shown, it includes a cylindrical magnetic base 1, the inner wall of the magnetic base 1 is connected to a barrel-shaped inward-rotating base 2 by a thread, the closed end surface of the inward-rotating base 2 is penetrated by a columnar rotating rod 3, and a disassembly component 4 is provided at one end of the rotating rod 3 located in the inward-rotating base 2, a spring top cover 5 is sleeved on the outer wall of the rotating rod 3 in the inward-rotating base 2, and the spring top cover 5 is located between the inward-rotating base 2 and the rotating rod 3, a round wire spring 6 is fixedly connected between the spring top cover 5 and the inward-rotating base 2, and the round wire spring 6 is sleeved on the outside of the rotating rod 3, and a connecting mechanism 7 is provided at one end of the rotating rod 3 away from the inward-rotating base 2.

[0020] The magnetic base 1 can be used to fix the sleeve on the tool surface where the bolt to be removed is located by magnetic force. When performing the disassembly work, the operator does not need to fix the sleeve by hand. At the same time, the internal rotation base 2 is threadedly connected to the magnetic base 1. By rotating the internal rotation base 2, the length of the sleeve to accommodate the bolt can be adjusted to accommodate bolts of different sizes. The round wire spring 6 can provide axial force for the disassembly component 4 during the disassembly process, so that it is stably connected to the bolt to be disassembled, effectively preventing the bolt to be disassembled from the disassembly component 4 during the disassembly process, thereby causing damage to the bolt and affecting the disassembly work.

[0021] Embodiment 2: like Figure 1 , Figure 2 and Figure 4As shown, it includes a cylindrical magnetic base 1, the inner wall of the magnetic base 1 is connected to a barrel-shaped inward-rotating base 2 by a thread, the closed end surface of the inward-rotating base 2 is penetrated by a columnar rotating rod 3, and a disassembly component 4 is provided at one end of the rotating rod 3 located in the inward-rotating base 2, a spring top cover 5 is sleeved on the outer wall of the rotating rod 3 in the inward-rotating base 2, and the spring top cover 5 is located between the inward-rotating base 2 and the rotating rod 3, a round wire spring 6 is fixedly connected between the spring top cover 5 and the inward-rotating base 2, and the round wire spring 6 is sleeved on the outside of the rotating rod 3, and a connecting mechanism 7 is provided at one end of the rotating rod 3 away from the inward-rotating base 2.

[0022] The end surface of the magnetic base 1 on the same side as the disassembly component 4 is provided with a plurality of storage grooves 8 , and a locking magnet 9 is fixedly connected in each storage groove 8 .

[0023] The locking magnets 9 are evenly distributed on the end surface of the magnetic base 1, and are used to fix the sleeve on the surface of the workpiece where the bolt to be removed is located. The evenly distributed magnets can provide a stable adsorption force to prevent the magnetic base 1 from sliding on the workpiece surface, providing support for the removal of the bolt.

[0024] Embodiment three: like Figure 1 , Figure 2 and Figure 3 As shown, it includes a cylindrical magnetic base 1, the inner wall of the magnetic base 1 is connected to a barrel-shaped inward-rotating base 2 by a thread, the closed end surface of the inward-rotating base 2 is penetrated by a columnar rotating rod 3, and a disassembly component 4 is provided at one end of the rotating rod 3 located in the inward-rotating base 2, a spring top cover 5 is sleeved on the outer wall of the rotating rod 3 in the inward-rotating base 2, and the spring top cover 5 is located between the inward-rotating base 2 and the rotating rod 3, a round wire spring 6 is fixedly connected between the spring top cover 5 and the inward-rotating base 2, and the round wire spring 6 is sleeved on the outside of the rotating rod 3, and a connecting mechanism 7 is provided at one end of the rotating rod 3 away from the inward-rotating base 2.

[0025] The disassembly assembly 4 includes a square first connecting groove 10 opened at one end of the rotating rod 3 located in the inner rotating base 2, a plurality of ball head plungers 11 are fixedly connected to the side wall of the first connecting groove 10, and a replaceable tool head 12 is clamped in the first connecting groove 10.

[0026] The ball end of the ball plunger 11 protrudes from the inner wall of the first connecting groove 10 for fixing the replaceable tool head 12, while the other end protrudes from the outer wall of the rotating rod 3 for clamping the spring top cover 5 to prevent the spring top cover from falling off the rotating rod 3.

[0027] The replaceable tool head 12 includes various shapes of screw bits and sockets, etc., and can be connected to different screw bits and sockets to adapt to different styles of bolts, thereby improving the versatility of the device.

[0028] Embodiment 4: like Figure 1 , Figure 2 and Figure 3 As shown, it includes a cylindrical magnetic base 1, the inner wall of the magnetic base 1 is connected to a barrel-shaped inward-rotating base 2 by a thread, the closed end surface of the inward-rotating base 2 is penetrated by a columnar rotating rod 3, and a disassembly component 4 is provided at one end of the rotating rod 3 located in the inward-rotating base 2, a spring top cover 5 is sleeved on the outer wall of the rotating rod 3 in the inward-rotating base 2, and the spring top cover 5 is located between the inward-rotating base 2 and the rotating rod 3, a round wire spring 6 is fixedly connected between the spring top cover 5 and the inward-rotating base 2, and the round wire spring 6 is sleeved on the outside of the rotating rod 3, and a connecting mechanism 7 is provided at one end of the rotating rod 3 away from the inward-rotating base 2.

[0029] The connecting mechanism 7 includes a square second connecting groove 13 opened on the end face of the rotating rod 3 away from the inward rotating base 2, a coaxial circular groove is opened on a group of inner walls opposite to the second connecting groove 13, and the outer edge of the end face where the second connecting groove 13 is located is provided with anti-slip grooves 14, and the outer wall corresponding to the rotating rod 3 and the second connecting groove 13 is composed of a plurality of groups of parallel planes.

[0030] The rotating rod 3 can be connected to the torque wrench through the square second connecting groove 13. At the same time, the parallel planes of the outer wall of the rotating rod 3 are convenient for clamping with the open-end wrench, providing a variety of connection methods with disassembly tools, thereby improving the versatility of the device.

[0031] At the same time, the anti-skid pattern 14 increases the friction force of the outer wall of the rotating rod 3, and the bolt can be directly removed manually after it is loosened, thereby improving the efficiency of bolt removal.

[0032] Embodiment five: like Figure 1 and Figure 2 As shown, it includes a cylindrical magnetic base 1, the inner wall of the magnetic base 1 is connected to a barrel-shaped inward-rotating base 2 by a thread, the closed end surface of the inward-rotating base 2 is penetrated by a columnar rotating rod 3, and a disassembly component 4 is provided at one end of the rotating rod 3 located in the inward-rotating base 2, a spring top cover 5 is sleeved on the outer wall of the rotating rod 3 in the inward-rotating base 2, and the spring top cover 5 is located between the inward-rotating base 2 and the rotating rod 3, a round wire spring 6 is fixedly connected between the spring top cover 5 and the inward-rotating base 2, and the round wire spring 6 is sleeved on the outside of the rotating rod 3, and a connecting mechanism 7 is provided at one end of the rotating rod 3 away from the inward-rotating base 2.

[0033] A limiting groove 15 is radially provided in the middle section of the rotating rod 3 , and a group of limiting bolts 16 are fixedly connected in the limiting groove 15 .

[0034] The limiting bolt 16 is used to limit the movement of the rotating rod 3 in the internal rotation base 2 to prevent the rotating rod 3 from escaping from the internal rotation base 2 and affecting the normal operation of the device.

[0035] Embodiment six: like Figure 1 and Figure 2 As shown, it includes a cylindrical magnetic base 1, the inner wall of the magnetic base 1 is connected to a barrel-shaped inward-rotating base 2 by a thread, the closed end surface of the inward-rotating base 2 is penetrated by a columnar rotating rod 3, and a disassembly component 4 is provided at one end of the rotating rod 3 located in the inward-rotating base 2, a spring top cover 5 is sleeved on the outer wall of the rotating rod 3 in the inward-rotating base 2, and the spring top cover 5 is located between the inward-rotating base 2 and the rotating rod 3, a round wire spring 6 is fixedly connected between the spring top cover 5 and the inward-rotating base 2, and the round wire spring 6 is sleeved on the outside of the rotating rod 3, and a connecting mechanism 7 is provided at one end of the rotating rod 3 away from the inward-rotating base 2.

[0036] A plurality of fixed magnets 17 are evenly fixed to the side wall of the magnetic base 1 .

[0037] The fixed magnet 17 on the side wall of the magnetic base 1 is used to attract bolts during the disassembly process. When the bolts are taken out of the workpiece and accommodated in the magnetic base 1, the fixed magnet 17 provides magnetic force to attract the bolts to the inner wall of the magnetic base to prevent the bolts from falling off during the removal of the sleeve and the bolts.

[0038] Embodiment seven: Based on Example 6 and Example 2: The locking magnet 9 and the fixing magnet 17 are both neodymium magnets.

[0039] Neodymium magnets can generate a strong magnetic field in a small volume. Under the same application conditions, compared with other traditional magnets, neodymium magnets can be smaller and lighter, but can provide stronger magnetic force. Provide a stable source of magnetic force for the fixation of this device.

[0040] The magnetic sleeve provided by the present application can be adsorbed on the surface of the workpiece where the bolt to be removed is located. During removal, the operator only needs to operate the removal tool without additionally fixing the magnetic sleeve. At the same time, after the bolt is removed, it is contained in the magnetic base and fixed by a fixed magnet. It is not easily affected by external forces and falls off during the removal process, which effectively avoids the problem that the removed bolt is easily stuck in the dead corner of the mechanical equipment and cannot be taken out, and avoids unnecessary damage caused by the bolt left in the mechanical equipment.

[0041] Working principle: When it is necessary to remove a bolt in a narrow space, first rotate the inward-turning base 2 to extend the replaceable tool head 12 from the magnetic base 1, then fix the replaceable tool head 12 to the bolt to be removed, and push the magnetic base 1 to make it adsorbed on the surface of the workpiece where the bolt to be removed is located. At this time, the round wire spring 6 is compressed, providing axial force to the replaceable tool head 12, so that it is stably connected to the bolt to be removed.

[0042] Select a suitable disassembly tool according to the actual disassembly situation. When a torque wrench is used for disassembly, insert the square head of the torque wrench into the second connecting groove 13 on the rotating rod 3, and then rotate the torque wrench for disassembly; when an open-end wrench is used for disassembly, adjust the open-end wrench to a suitable diameter, and clamp it on the outer wall of the second connecting groove 13, and then rotate the torque wrench for disassembly.

[0043] During the disassembly process of the bolt, as the bolt is unscrewed, the round wire spring 6 is gradually compressed. When the round wire spring 6 is compressed to the minimum length but the bolt is not completely unscrewed, the inward rotating base 2 can be rotated away from the disassembly component 4 to increase the stroke of the bolt in the magnetic base 1.

[0044] When the bolt is completely unscrewed from the workpiece, the bolt is adsorbed on the inner wall of the magnetic base 1 under the influence of the magnetic force of the fixed magnet 17. At this time, the connection between the rotating rod 3 and the disassembly tool is disconnected, and the device together with the disassembled bolt is removed from the surface of the workpiece to complete the disassembly of the bolt.

[0045] During the disassembly process of the bolt, when the bolt length exceeds the maximum accommodation length of the magnetic base 1 and the inward rotating base 2, the inward rotating base 2 can be rotated to partially unscrew it from the magnetic base 1, thereby expanding the volume of the magnetic base 1 and the inward rotating base 2 assembly to increase the accommodated bolt length.

[0046] When the bolt is loosened, the disassembly tool can be removed and the rotating rod 3 can be manually rotated to disassemble the bolt.

Claims

1. A magnetic sleeve for use in narrow spaces, characterized in that: The invention comprises a cylindrical magnetic base (1), the inner wall of which is connected to a barrel-shaped inward-rotating base (2) via a thread, a columnar rotating rod (3) passing through the closed end surface of the inward-rotating base (2), a disassembly assembly (4) being arranged at one end of the rotating rod (3) located in the inward-rotating base (2), a spring top cover (5) being sleeved on the outer wall of the rotating rod (3) in the inward-rotating base (2), and the spring top cover (5) being located between the inward-rotating base (2) and the rotating rod (3), a round wire spring (6) being fixedly connected between the spring top cover (5) and the inward-rotating base (2), and the round wire spring (6) being sleeved on the outside of the rotating rod (3), and a connecting mechanism (7) being arranged at one end of the rotating rod (3) away from the inward-rotating base (2).

2. The magnetic sleeve for narrow space according to claim 1, characterized in that: The end surface of the magnetic base (1) on the same side as the disassembly assembly (4) is provided with a plurality of storage grooves (8), and a locking magnet (9) is fixedly connected in each storage groove (8).

3. The magnetic sleeve for narrow space according to claim 1, characterized in that: The disassembly assembly (4) comprises a square first connection groove (10) formed at one end of the rotating rod (3) located inside the internal rotation base (2), a plurality of ball head plungers (11) being fixedly connected to the side wall of the first connection groove (10), and a replaceable tool head (12) being clamped inside the first connection groove (10).

4. The magnetic sleeve for narrow space according to claim 1, characterized in that: The connecting mechanism (7) comprises a square second connecting groove (13) formed on an end surface of the rotating rod (3) away from the inner rotating base (2); a group of inner walls opposite to the second connecting groove (13) are provided with coaxial circular grooves; an outer edge of the end surface where the second connecting groove (13) is located is provided with anti-slip grooves (14); and an outer wall of the rotating rod (3) corresponding to the second connecting groove (13) is composed of a plurality of groups of mutually parallel planes.

5. The magnetic sleeve for narrow space according to claim 4, characterized in that: A limiting groove (15) is radially provided in the middle section of the rotating rod (3), and a group of limiting bolts (16) are fixedly connected in the limiting groove (15).

6. The magnetic sleeve for narrow space according to claim 1, characterized in that: A plurality of fixed magnets (17) are evenly fixed to the side wall of the magnetic base (1).

7. The magnetic sleeve for narrow space according to claim 2 or 6, characterized in that: The locking magnet (9) and the fixing magnet (17) are both neodymium magnets.

8. A bolt disassembly method, characterized in that: The magnetic sleeve for narrow space according to any one of claims 1 to 7 is implemented in the following manner: Step 1: Rotate the inner rotation base (2) to make the disassembly component (4) extend out from the magnetic base (1), and then adsorb the sleeve onto the surface of the workpiece where the bolt to be disassembled is located through the magnetic base (1), and make the disassembly component (4) clamp onto the bolt to be disassembled; Step 2: Connect the disassembly tool to the sleeve via the connecting mechanism (7), and rotate the disassembly tool to disassemble the bolt; Step 3: After the bolt is removed from the workpiece, rotate the inner rotation base (2) away from the magnetic base (1), then separate the removal tool from the device and remove the bolt together with the sleeve from the workpiece.

9. The bolt removal method according to claim 8, characterized in that: In step 2, when the bolt to be removed is loosened, the bolt can be removed by manually rotating the rotating rod (3).

10. The bolt removal method according to claim 8, characterized in that: When the stroke of the disassembly component (4) in step 2 is not sufficient to accommodate the bolt, the inward rotating base (2) can be rotated toward a side away from the magnetic base (1) to extend the stroke of the disassembly component (4).

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