Broken screw extractor

Abstract

The utility model provides a broken screw extractor, which belongs to the technical field of maintenance tools and comprises a first fixing rod. A first screw rod is fixedly mounted at the front end of the rocker; the second fixing rod is fixedly installed in the middle of the lower end face of the first fixing rod, and a device groove is formed in the second fixing rod; the upper end face and the lower end face of the fixed transverse plate are each provided with a fixed block, the outer end face of the fixed block at the upper end is fixedly provided with a fixed column, and the outer end face of the fixed block at the lower end is fixedly provided with a screw-out rod. And a second screw rod is fixedly mounted on the lower end surface of the clamping nail. According to the screw-out device, the spiral blades are arranged outside the screw-out rod, so that when the screw-out rod enters the broken screw, the screw-out rod and the broken screw form a whole, the broken screw can rotate along with rotation of the screw-out rod at the moment, and therefore the broken screw can be taken out from the threaded groove; and the original threaded hole is not damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of maintenance tools, and more specifically, particularly relates to a broken head screw extractor. Background Art

[0002] A screw is a very common part in the machinery industry. The material and size of the screw are limited. During the use of the screw, if it is over-tightened or repeatedly disassembled and installed, the thread locking force will be damaged, resulting in the breakage of the screw. And it is difficult for workers to extract the broken head screw.

[0003] Based on the above, there are still the following two deficiencies when workers currently extract broken head screws:

[0004] First, when extracting the broken head screw, it is easy to damage the thread inside the threaded hole, resulting in inconvenience when installing a new screw later.

[0005] Secondly, the broken head screw inside some threaded holes will rust. At this time, the broken head screw and the threaded hole almost form a whole, and workers need to spend a lot of effort to extract such a screw. Content of the Utility Model

[0006] In order to solve the above technical problems at least to a certain extent, the utility model provides a broken head screw extractor.

[0007] The purpose and effect of a broken head screw extractor of the utility model are achieved by the following specific technical means: A broken head screw extractor includes a first fixing rod;

[0008] A fixing hole is respectively opened on the left and right side plates of the first fixing rod, and a thread is opened inside the fixing hole;

[0009] A rocker, and a first screw rod is fixedly installed at the front end of the rocker;

[0010] A second fixing rod, which is fixedly installed at the middle position of the lower end surface of the first fixing rod. A device slot is opened inside the second fixing rod, and the opening of the device slot faces downward;

[0011] A fixing cross plate, and a fixing block is respectively installed on the upper and lower end surfaces of the fixing cross plate. A fixing column is fixedly installed on the outer end surface of the upper fixing block, and a screwing-out rod is fixedly installed on the outer end surface of the lower fixing block;

[0012] A staple, and a second screw rod is fixedly installed on the lower end surface of the staple.

[0013] Further, a magnet is respectively installed at the upper positions of the front and rear end surfaces of the first fixing rod, and the magnet is in a circular ring structure.

[0014] Further, the main body of the fixing block is a hexagonal prism structure, and the main body of the device slot is also a hexagonal prism structure. When the fixing block is clamped inside the device slot, the outer end face of the fixing block fits with the outer end face of the device slot.

[0015] Further, two fastening holes are symmetrically opened on the outer end face of the second fixing rod, threads are opened on the inner end face of the fastening holes, and fastening screws are threadedly connected inside the fastening holes.

[0016] Further, the first screw rod on the front end face of the rocker is threadedly connected in the fixing hole on the surface of the rocker, and a connection hole is opened on the rear surface of the rocker, and threads are opened inside the connection hole.

[0017] Further, a connection groove is opened on the upper end surface of the fixing column, threads are opened inside the connection groove, and the second screw rod on the lower end face of the staple is threadedly connected in the connection groove on the surface of the fixing column.

[0018] Further, spiral blades are opened on the outer end face of the screwing-out rod, and the main body of the screwing-out rod is a frustum-shaped structure.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] In the utility model, by arranging that spiral blades are opened on the outside of the screwing-out rod and the main body of the screwing-out rod is a frustum-shaped structure, when the screwing-out rod enters into the broken-head screw, the screwing-out rod and the broken-head screw will form a whole. At this time, the broken-head screw will rotate along with the rotation of the screwing-out rod, so that the broken-head screw can be taken out from the thread groove. There is no violent demolition in this process, and the original thread hole will not be damaged.

[0021] In addition, by arranging that a connection hole is opened on the rear end face of the rocker, a worker can threadedly connect the first screw rod at the front end of the rocker in the connection hole on the rear surface of another rocker, so that the two rockers can be connected together. By increasing the length of the rocker, it is easier for the worker to turn the rocker.

[0022] In addition, the second screw rod on the lower end face of the staple is threadedly connected in the connection groove on the surface of the fixing column. After the taper at the front end of the staple becomes blunt, the worker can take out the second screw rod from the connection groove and replace it with a new staple, which is convenient for the worker to disassemble and assemble the staple. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the overall device of the utility model.

[0024] Figure 2 is a schematic structural diagram of the first fixing rod and the second fixing rod of the utility model.

[0025] Figure 3 Schematic diagram of the connection structure between the fixed horizontal plate and the fixed block of the present utility model.

[0026] Figure 4 Schematic diagram of the cross-sectional structure of the fixed column of the present utility model.

[0027] Figure 5 Schematic diagram of the rocker of the present utility model.

[0028] Figure 6 Schematic diagram of the connection structure between the fixed horizontal plate, the fixed block and the screwing-out rod of the present utility model.

[0029] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows:

[0030] 1. First fixing rod; 101. Magnet; 102. Fixing hole; 2. Rocker; 201. First screw; 202. Connecting hole; 3. Second fixing rod; 301. Device slot; 302. Tightening hole; 4. Fixed horizontal plate; 401. Fixed block; 5. Fixed column; 501. Connecting slot; 6. Staple; 601. Second screw; 7. Screwing-out rod. Specific implementation mode

[0031] The following further describes in detail the implementation mode of the present utility model in conjunction with the drawings and embodiments.

[0032] Embodiment 1:

[0033] As Figures 1 to 6 shown:

[0034] This embodiment provides a broken-head screw extractor, including a first fixing rod 1;

[0035] The main body of the first fixing rod 1 is in a long strip shape, and a fixing hole 102 is respectively opened on the left and right side plate surfaces of the first fixing rod 1, and a thread is opened inside the fixing hole 102;

[0036] A rocker 2, the main body of the rocker 2 is in a cylindrical shape, and a first screw 201 is fixedly installed at the front end of the rocker 2;

[0037] A second fixing rod 3, the second fixing rod 3 is fixedly installed at the middle position of the lower end surface of the first fixing rod 1, a device slot 301 is opened inside the second fixing rod 3, and the opening of the device slot 301 faces downward;

[0038] A fixed horizontal plate 4, the main body of the fixed horizontal plate 4 is in a circular plate shape, a fixed block 401 is respectively installed on the upper and lower end surfaces of the fixed horizontal plate 4, a fixed column 5 is fixedly installed on the outer end surface of the upper fixed block 401, and a screwing-out rod 7 is fixedly installed on the outer end surface of the lower fixed block 401;

[0039] The staple 6 has a conical structure as its main body, and a second screw 601 is fixedly installed on the lower end surface of the staple 6.

[0040] Among them, a magnet 101 is installed above the front and rear end faces of the first fixing rod 1 respectively. The magnet 101 has an annular structure. During use, when the first fixing rod 1 is temporarily stored, the first fixing rod 1 can be attached to the surface of the machine. Through the attraction between the magnet 101 and the machine, the first fixing rod 1 can be fixed on the surface of the machine, which is convenient for workers to temporarily store this device.

[0041] Among them, the main body of the fixing block 401 is a hexagonal prism structure, and the main body of the device slot 301 is also a hexagonal prism structure. When the fixing block 401 is clamped inside the device slot 301, the outer end face of the fixing block 401 fits with the outer end face of the device slot 301. When the fixing block 401 is clamped in the device slot 301, since the main body of the fixing block 401 is a hexagonal prism structure, the fixing block 401 will not rotate inside the device slot 301.

[0042] Among them, two fastening holes 302 are symmetrically opened on the outer end face of the second fixing rod 3. Threads are opened on the inner end face of the fastening holes 302, and fastening screws are threadedly connected inside the fastening holes 302. During use, after the worker tightens the fastening screws inside the fastening holes 302, the fixing of the fixing block 401 inside the device slot 301 can be realized, and the fixing block 401 can be prevented from slipping out of the device slot 301.

[0043] Among them, the first screw 201 on the front end face of the rocker 2 is threadedly connected in the fixing hole 102 on the surface of the rocker 2, and a connection hole 202 is opened on the rear surface of the rocker 2. Threads are opened inside the connection hole 202. During use, the worker can threadedly connect the first screw 201 at the front end of the rocker 2 into the connection hole 202 at the rear end of another rocker 2, so as to connect the two rockers 2 together.

[0044] Among them, a connection groove 501 is opened on the upper end surface of the fixing column 5. Threads are opened inside the connection groove 501, and the second screw 601 on the lower end surface of the staple 6 is threadedly connected in the connection groove 501 on the surface of the fixing column 5. During use, after the taper at the front end of the staple 6 becomes blunt, through the setting that the second screw 601 is threadedly connected in the connection groove 501 on the upper end surface of the fixing column 5, it is convenient for the worker to replace the staple 6.

[0045] Among them, spiral blades are opened on the outer end face of the screw-out rod 7. The main body of the screw-out rod 7 is a frustum-shaped structure. During use, the front section of the screw-out rod 7 is sharp and the rear section is thick. When the screw-out rod 7 spirally enters the broken-head screw, the screw-out rod 7 will form a whole with the broken-head screw, so that the broken-head screw can be taken out from the thread groove.

[0046] The specific usage method and function of this embodiment:

[0047] In the present utility model, when removing a broken screw, the screwing-out rod 7 can be clamped in the device groove 301. At this time, the clamping pin 6 is exposed outside. The worker can align the clamping pin 6 with the middle position of the broken screw, and then strike the first fixing rod 1 with a hammer. Since the main body of the clamping pin 6 is of a conical structure, the clamping pin 6 can leave a conical hole on the surface of the broken screw. At this time, the fixed cross plate 4 can be rotated 180°, so that the clamping pin 6 is clamped in the device groove 301 and the screwing-out rod 7 is exposed outside. Align the lower end face of the screwing-out rod 7 with the conical hole on the surface of the broken screw. At this time, the first screw rod 201 at the front end of the rocker 2 is threadedly connected to the fixing hole 102 on the surface of the first fixing rod 1. Through the arrangement that the connecting hole 202 is provided on the rear end face of the rocker 2, the worker can threadedly connect the first screw rod 201 at the front end of another rocker 2 to the connecting hole 202 at the rear end of this rocker 2, so that the two rockers 2 can be connected together. By increasing the length of the rocker 2, the worker can more easily turn the rocker 2. When the worker rotates the rocker 2 counterclockwise, the screwing-out rod 7 will slowly drill into the broken screw. Since the outer part of the screwing-out rod 7 is provided with spiral blades, as the screwing-out rod 7 enters the broken screw, the screwing-out rod 7 will form a whole with the broken screw. At this time, the broken screw will rotate with the rotation of the screwing-out rod 7, so that the broken screw can be taken out from the thread groove.

[0048] Embodiment 2: Based on the rocker 2 in Embodiment 1, rubber balls or rubber strips can be evenly installed on the outer end face of the rocker 2. In this way, when the worker rotates the rocker 2, the friction between the worker's hand and the rocker 2 can be increased, avoiding the phenomenon of slipping.

Claims

1. A broken head screw extractor, characterized in that: include: A first fixing rod (1), wherein a fixing hole (102) is respectively provided on the left and right side plate surfaces of the first fixing rod (1), and a thread is provided inside the fixing hole (102); a rocker (2), wherein a first screw rod (201) is fixedly installed at the front end of the rocker (2); a second fixing rod (3), wherein the second fixing rod (3) is fixedly installed at the middle position of the lower end surface of the first fixing rod (1), and a mounting groove (301) is provided inside the second fixing rod (3), and the opening of the mounting groove (301) faces downward; a fixing cross plate (4), wherein a fixing block (401) is respectively provided on the upper and lower end surfaces of the fixing cross plate (4), a fixing column (5) is fixedly installed on the outer end surface of the upper fixing block (401), and a screw-out rod (7) is fixedly installed on the outer end surface of the lower fixing block (401); and a clamp (6), wherein a second screw rod (601) is fixedly installed on the lower end surface of the clamp (6).

2. The broken head screw extractor according to claim 1, characterized in that: A magnet (101) is respectively installed above the front and rear end surfaces of the first fixing rod (1), and the magnet (101) is a circular ring structure.

3. The broken head screw extractor according to claim 1, characterized in that: The main body of the fixing block (401) is a hexagonal prism structure, and the main body of the installation groove (301) is also a hexagonal prism structure. When the fixing block (401) is snap-fitted into the interior of the installation groove (301), the outer end surface of the fixing block (401) fits with the outer end surface of the installation groove (301).

4. The broken head screw extractor according to claim 1, characterized in that: The outer end surface of the second fixing rod (3) is symmetrically provided with two fastening holes (302), the inner end surface of the fastening hole (302) is provided with a thread, and the inner thread of the fastening hole (302) is connected with a fastening screw.

5. The broken head screw extractor according to claim 1, characterized in that: The first screw rod (201) on the front end surface of the rocker (2) is threadedly connected to a fixing hole (102) on the surface of the rocker (2); a connecting hole (202) is provided on the rear end surface of the rocker (2), and a thread is provided inside the connecting hole (202).

6. The broken head screw extractor according to claim 1, characterized in that: The upper end surface of the fixing column (5) is provided with a connection groove (501), and a thread is provided inside the connection groove (501). The second screw rod (601) on the lower end surface of the clamp (6) is threadedly connected to the connection groove (501) on the surface of the fixing column (5).

7. The broken head screw extractor according to claim 1, characterized in that: The outer end surface of the screw-out rod (7) is provided with spiral blades, and the main body of the screw-out rod (7) is a truncated cone structure.

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