A bolt that is easy to disassemble after breaking

Abstract

The present invention discloses a bolt that is easy to disassemble after fracture, comprising a bolt body and a disassembly component; both sides of the bolt body are provided with a first cavity and a fixing cavity communicating with the bottom of the first cavity, the middle part of the bolt body is provided with a second cavity, both sides of the bottom of the second cavity are respectively communicated with the lower parts of the fixing cavities on both sides through limiting channels, and a limiting mechanism is arranged in the second cavity for limiting the disassembly component; the disassembly component includes: a cross bar for installing a fixing mechanism and a first ejector rod; the fixing mechanism extends into the first cavity and is used for fixing the bolt body after fracture; the first ejector rod extends into the second cavity and is used for adjusting the working state of the limiting mechanism. The bolt of the present invention is easy to disassemble by using the disassembly component after fracture, without the need for drilling, with simple operation and high working efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of bolts, and particularly relates to a bolt that is easy to disassemble after fracture. Background Art

[0002] During the actual bolt installation process, due to excessive force or the influence of external forces, the bolt may break inside the threaded hole. Since the broken part of the bolt is inside the threaded hole and there is no exposed part, it cannot be directly pulled out. In response to this situation, the commonly used method at present is to drill a hole in the broken bolt section, and then select a suitable wire extractor and screw it into the drilled hole. Since the wire extractor has reverse threads, rotating the wire extractor can drive the broken part of the bolt to screw out. When drilling a hole in the broken bolt, if the space is relatively narrow or the center position of the broken bolt cannot be determined, there will be problems in which it is difficult to perform the drilling operation, and this method is complex to operate and has low work efficiency. In view of this, it is necessary to study a bolt that is easy to disassemble after fracture. Summary of the Invention

[0003] To solve the deficiencies of the prior art, the purpose of the present invention is to provide a bolt that is easy to disassemble after fracture. After fracture, the disassembly component is used for easy disassembly, without the need for drilling, simple to operate, and with high work efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] A bolt that is easy to disassemble after fracture, comprising a bolt body and a disassembly component;

[0006] On both sides of the bolt body, there are first cavities and fixed cavities communicating with the bottoms of the first cavities. In the middle of the bolt body, there is a second cavity. On both sides of the bottom of the second cavity, they are respectively communicated with the lower parts of the fixed cavities on both sides through limiting channels. A limiting mechanism is arranged in the second cavity for limiting the disassembly component;

[0007] The disassembly component includes:

[0008] A cross bar for installing a fixing mechanism and a first ejector rod;

[0009] A fixing mechanism extending into the first cavity for fixing the bolt body after fracture;

[0010] A first ejector rod extending into the second cavity for adjusting the working state of the limiting mechanism.

[0011] Preferably, the aforementioned fixing mechanism includes an outer sleeve tube and a second ejector rod threadedly connected inside the outer sleeve tube. The second ejector rod can move up and down in the outer sleeve tube. A vertical rod is vertically fixed at the bottom end of the second ejector rod. On both sides of the vertical rod, fixing blocks are connected through first springs.

[0012] Preferably, the foregoing outer sleeve is threadedly connected to the first cavity, and its bottom extends to the fixed cavity. When the outer sleeve is pulled out upward, the first spring elongates to push the fixing blocks on both sides apart, so as to fix the bolt body.

[0013] Preferably, the foregoing limiting mechanism includes a mounting block and limiting rods arranged on both sides of the mounting block. The bottom of the mounting block is connected to the bottom of the second cavity through a second spring. The limiting rods are located in the limiting channels and include a connecting portion and a body portion. A first magnet is installed at the end of the connecting portion, and second magnets corresponding to the first magnet are installed on both sides of the mounting block. The second magnet and the first magnet are magnetically attracted to connect the mounting block and the limiting rods on both sides together.

[0014] Preferably, a connecting block is arranged on one side of the limiting channel close to the mounting block, and the body portion is connected to the connecting block through a third spring.

[0015] Preferably, the foregoing first ejector rod is threadedly inserted into the second cavity. When the mounting block is pressed downward, the second spring is compressed, the mounting block and the limiting rods on both sides are separated, and the third spring elongates to send the outer end of the limiting rod to the fixed cavity.

[0016] Preferably, a limiting hole is provided in the lower part of the fixing block close to the limiting channel, and the outer end of the limiting rod is inserted into the limiting hole to limit the fixing mechanism.

[0017] Preferably, a first mounting hole is provided in the middle of the foregoing cross bar, and second mounting holes are provided on both sides thereof. The first ejector rod and the outer sleeve are respectively threadedly connected to the first mounting hole and the second mounting hole.

[0018] Preferably, the width of the foregoing fixed cavity is greater than the diameter of the first cavity.

[0019] The beneficial effects of the present invention are as follows: After the bolt of the present invention breaks, the disassembly component is convenient for disassembly, without punching holes, simple in operation and high in work efficiency; by inserting the outer sleeve into the first cavity and then pulling it out upward for a certain distance, the first spring elongates to push the fixing blocks on both sides apart, which can fix the bolt body; by inserting the first ejector rod into the second cavity and pressing the mounting block downward, the mounting block and the limiting rods on both sides are separated, and the third spring elongates to send the outer end of the limiting rod to the fixed cavity and insert it into the limiting hole of the fixing block, which can limit the fixing block and make the fixing block fix the bolt body more stably; by turning the cross bar to drive the bolt body to rotate, the disassembly of the broken bolt can be completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the bolt body of the present invention;

[0021] Figure 2 is a schematic diagram of the bolt body of the present invention in a disassembled state;

[0022] Figure 3 is a schematic connection diagram of the fixing block in the present invention;

[0023] Figure 4 is Figure 1 a partial enlarged schematic view of the position A in

[0024] Figure 5 is Figure 2 a partial enlarged schematic view of the position B in

[0025] The meanings of the reference numerals in the figure: 1, bolt body; 1.1, first cavity; 1.2, fixing cavity; 1.3, second cavity; 1.4, limiting channel; 2, cross bar; 3, first ejector rod; 4, outer sleeve; 5, second ejector rod; 6, vertical rod; 7, first spring; 8, fixing block; 9, mounting block; 10, limiting rod; 10.1, connecting part; 10.2, body part; 11, second spring; 12, connecting block; 13, third spring. Specific Embodiments

[0026] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0027] Referring to Figure 1 and Figure 2 , a bolt that is easy to disassemble after fracture in the present invention includes a bolt body 1 and a disassembly component; both sides of the bolt body 1 are provided with a first cavity 1.1 and a fixing cavity 1.2 communicating with the bottom of the first cavity 1.1, and the width of the fixing cavity 1.2 is greater than the diameter of the first cavity 1.1. A second cavity 1.3 is provided in the middle of the bolt body 1, and both sides of the bottom of the second cavity 1.3 are respectively communicated with the lower parts of the fixing cavities 1.2 on both sides through limiting channels 1.4, and a limiting mechanism is arranged in the second cavity 1.3 for limiting the disassembly component.

[0028] The disassembly component includes: a cross bar 2 for installing a fixing mechanism and a first ejector rod 3; the fixing mechanism extends into the first cavity 1.1 for fixing the fractured bolt body 1; the first ejector rod 3 extends into the second cavity 1.3 for adjusting the working state of the limiting mechanism.

[0029] The fixing mechanism includes an outer sleeve 4 and a second ejector rod 5 threadedly connected to the inside of the outer sleeve 4. The second ejector rod 5 can move up and down in the outer sleeve 4. A vertical rod 6 is vertically fixed to the bottom end of the second ejector rod 5, and both sides of the vertical rod 6 are connected to the fixing block 8 through a first spring 7. The outer sleeve 4 is threadedly connected to the first cavity 1.1, and its bottom extends to the fixing cavity 1.2. When the outer sleeve 4 is pulled out upward, the first spring 7 elongates to push the fixing blocks 8 on both sides apart to fix the bolt body 1. In the non-working state, the lower part of the second ejector rod 5 and the fixing block 8 are both located in the outer sleeve 4.

[0030] The limiting mechanism includes a mounting block 9 and limiting rods 10 arranged on both sides of the mounting block 9. The bottom of the mounting block 9 is connected to the bottom of the second cavity 1.3 through a second spring 11. The limiting rods 10 are located in the limiting channels 1.4 and include a connecting portion 10.1 and a body portion 10.2. A first magnet is installed at the end of the connecting portion 10.1. Second magnets corresponding to the first magnets are installed on both sides of the mounting block 9. The second magnets and the first magnets attract each other magnetically to connect the mounting block 9 and the limiting rods 10 on both sides together. A connecting block 12 is arranged on one side of the limiting channel 1.4 close to the mounting block 9. The body portion 10.2 is connected to the connecting block 12 through a third spring 13. The first ejector rod 3 is screwed into the second cavity 1.3 and presses the mounting block 9 downward. The second spring 11 is compressed, and the mounting block 9 and the limiting rods 10 on both sides are separated. The third spring 13 extends to send the outer ends of the limiting rods 10 to the fixed cavity 1.2. A limiting hole is arranged at the lower part of the fixed block 8 close to the limiting channel 1.4. The outer ends of the limiting rods 10 are inserted into the limiting holes to play a role in limiting the fixing mechanism.

[0031] A first mounting hole is arranged in the middle of the cross bar 2, and second mounting holes are arranged on both sides thereof. The first ejector rod 3 and the outer sleeve 4 are respectively screwed to the first mounting hole and the second mounting hole. By turning the cross bar 2, the outer sleeve 4 and the second ejector rod 5 can be driven to rotate, so as to drive the bolt body 1 to rotate, and the disassembly of the broken bolt can be completed.

[0032] In order to better illustrate the present invention, the working process is specifically described below:

[0033] When it is necessary to disassemble a broken bolt, the outer sleeve 4 is screwed into the first cavity 1.1, and its bottom extends to the fixed cavity 1.2. The outer sleeve 4 is pulled upward for a certain distance, and the bottom of the second ejector rod 5 is exposed. The first spring 7 extends to bounce the fixed blocks 8 on both sides to fix the bolt body 1. Then the first ejector rod 3 is screwed into the second cavity 1.3 and presses the mounting block 9 downward. The second spring 11 is compressed, and the mounting block 9 and the limiting rods 10 on both sides are separated. The third spring 13 extends to insert the outer ends of the limiting rods 10 into the limiting holes of the fixed blocks 8 to fix the fixed blocks 8. By turning the cross bar 2 to drive the bolt body 1 to rotate, the disassembly of the broken bolt can be completed. After the disassembly is completed, the outer sleeve and the second ejector rod are unscrewed and can be used again.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A bolt that is easy to disassemble after fracture, characterized in that, It includes a bolt body (1) and a disassembly component; On both sides of the bolt body (1), a first cavity (1.1) and a fixing cavity (1.2) communicating with the bottom of the first cavity (1.1) are provided. In the middle of the bolt body (1), a second cavity (1.3) is provided. On both sides of the bottom of the second cavity (1.3), the lower parts of the fixing cavities (1.2) on both sides are respectively communicated through limiting channels (1.4). A limiting mechanism is arranged in the second cavity (1.3) for limiting the disassembly component; The disassembly component includes: A cross bar (2) for installing a fixing mechanism and a first ejector rod (3); The fixing mechanism extends into the first cavity (1.1) and is used to fix the broken bolt body (1). The fixing mechanism includes an outer sleeve (4) and a second ejector rod (5) threadedly connected inside the outer sleeve (4). The second ejector rod (5) can move up and down in the outer sleeve (4). A vertical rod (6) is vertically fixed at the bottom end of the second ejector rod (5). On both sides of the vertical rod (6), fixing blocks (8) are connected through first springs (7); The first ejector rod (3) extends into the second cavity (1.3) and is used to adjust the working state of the limiting mechanism; The limiting mechanism includes a mounting block (9) and limiting rods (10) arranged on both sides of the mounting block (9). The bottom of the mounting block (9) is connected to the bottom of the second cavity (1.3) through a second spring (11). The limiting rods (10) are located in the limiting channels (1.4) and include a connecting portion (10.1) and a body portion (10.2). A first magnet is installed at the end of the connecting portion (10.1). Second magnets corresponding to the first magnets are installed on both sides of the mounting block (9). The second magnets and the first magnets attract each other magnetically to connect the mounting block (9) and the limiting rods (10) on both sides together; A limiting hole is provided in the lower part of the fixing block (8) close to the limiting channel (1.4). The outer end of the limiting rod (10) is inserted into the limiting hole to limit the fixing mechanism; 2. The bolt that is easy to disassemble after fracture according to claim 1, wherein The outer sleeve (4) is threadedly connected in the first cavity (1.1), and its bottom extends to the fixing cavity (1.2). When the outer sleeve (4) is pulled out upward, the first spring (7) elongates to push the fixing blocks (8) on both sides apart to fix the bolt body (1); 3. The bolt that is easy to disassemble after breaking according to claim 1, wherein, A connecting block (12) is provided on one side of the limiting channel (1.4) close to the mounting block (9). The body portion (10.2) is connected to the connecting block (12) through a third spring (13); 4. The bolt which is easy to disassemble after fracture according to claim 1, characterized in that, The first ejector rod (3) is threadedly inserted into the second cavity (1.3). When the mounting block (9) is pressed downward, the second spring (11) is compressed, and the mounting block (9) and the limiting rods (10) on both sides are separated. The third spring (13) elongates to send the outer end of the limiting rod (10) to the fixing cavity (1.2); 5. A bolt that is easy to disassemble after fracture according to claim 1, characterized in that, A first mounting hole is provided in the middle of the cross bar (2), and second mounting holes are provided on both sides of it. The first ejector rod (3) and the outer sleeve (4) are respectively threadedly connected to the first mounting hole and the second mounting hole; 6. The bolt that is easy to disassemble after fracture according to claim 1, wherein, The width of the fixing cavity (1.2) is greater than the diameter of the first cavity (1.1).

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