Broken wire taking-out device

Abstract

The utility model relates to the technical field of hardware tools, and discloses a broken wire taking-out device which comprises at least three abutting blocks which are sequentially spliced into a cylinder in the circumferential direction, an opening piece which is located in the middle of all the abutting blocks and can move in the axial direction, and a limiting structure used for limiting the abutting blocks to move in the radial direction. The pushing structure is used for pushing the opening piece to move in the axial direction; at least part of the distraction piece is conical, and the inner wall of the abutting block forms a matching groove matched with the conical shape of the distraction piece; the limiting structure comprises a fixing block which is used for placing the opening piece and enabling all the abutting blocks to be spliced into a circle; a limiting strip is arranged on the side, close to the abutting block, of the fixing block in a protruding mode. According to the utility model, the at least three abutting blocks which are used for being inserted into the pipeline and are sequentially arranged in the circumferential direction are arranged, and the opening pieces are arranged among the abutting blocks, so that the stability of connection between the opening pieces and the large-inner-diameter pipeline is improved, and the operation is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hardware tools, and specifically relates to a broken wire taking-out device. BACKGROUND

[0002] The pipeline and valve are long-term through liquid inside, so the threads of the pipeline and valve and the pipeline or wall body connection place will be worn for a long time, and even sometimes will be broken because of various reasons, such as rust, wear, mechanical damage, material defects, temperature change influence, design installation defects, additional stress and aging factors; if the pipeline or valve is worn or broken, etc. The situation will be embedded in the pipeline or wall, and then hinder the operator to install a new pipeline or repair, because the old pipeline or valve has no force fulcrum, and no exposed thread or nut, it is very laborious to take out the old pipeline or valve from the old pipeline or wall, so a broken wire taking-out device needs to be specially designed for this situation.

[0003] Our company has previously designed a broken wire taking-out scheme and made a utility model patent application, the application number is 2024225382625, and the name is a broken wire taking-out device. The scheme uses a lifting piece with a taper to separate two insertion heads combined into a circle to make the two insertion heads tightly clamped with the inner wall of the pipeline, so as to take out the pipeline; although it is convenient to use, when facing a pipeline with a large inner diameter, a tooth sleeve still needs to be installed to increase the contact area of the fixing tooth and the inner wall of the pipeline, so as to ensure the connection stability of the fixing tooth and the inner wall of the pipeline; therefore, when facing a pipeline with a large inner diameter, the connection mode of the fixing tooth and the inner wall of the pipeline is not convenient enough, and if the tooth sleeve is not used, the connection stability is not good enough. Therefore, on the basis of the scheme, a more convenient and more stable broken wire taking-out device is further designed. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the deficiencies in the prior art, providing a broken wire taking-out device, by arranging at least three abutting blocks for inserting into the pipeline in sequence along the circumference, and arranging a lifting piece between the abutting blocks, the stability of the lifting piece and the large-diameter pipeline connection is improved, and the operation is more convenient.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a broken wire taking-out device, comprising at least three abutting blocks spliced into a cylinder in sequence along the circumference, a lifting piece located in the middle of all abutting blocks and capable of moving along the axial direction, a limiting structure for limiting the moving direction of the abutting block, and a pushing structure for pushing the lifting piece to move along the axial direction.

[0006] The abutting block is connected with a clamping block along its radial direction; the limiting structure comprises a limiting strip arranged along the radial direction of the abutting block; the clamping block is clamped with the limiting strip and can move along the radial direction;

[0007] The center position of the limiting strip after splicing is provided with a receiving hole, and the upper part of the supporting member is arranged in the receiving hole;

[0008] The pushing structure comprises a pushing member which is inserted from the left end of the receiving hole and pushes the supporting member to move towards the abutting block.

[0009] Further, the supporting member is at least partially conical, and the conical shape is arranged close to the abutting block or located at the center of the cylinder formed by all the abutting blocks; and the inner wall of the abutting block is configured as a matching groove adapted to the conical shape of the supporting member.

[0010] Further, the clamping block and the limiting strip can be clamped in two ways, the first way being that the clamping block is provided with a clamping groove, and the limiting strip is arranged in the clamping groove; and the second way being that the limiting strip is provided with a clamping groove, and the clamping block is arranged in the clamping groove; and the clamping grooves in the two ways are all fully closed or provided with notches.

[0011] Further, the pushing structure further comprises a connecting block connected with the limiting strip, the connecting block is provided with a pushing screw hole in the axial direction; the pushing member is a pushing screw rod matched with the pushing screw hole; and the diameter of the pushing screw hole is smaller than the diameter of the receiving hole.

[0012] Further, the limiting structure further comprises a fixed block fixedly connected with the limiting strip away from the abutting block; the fixed block is fixedly connected with the connecting block and arranged in the radial direction; and the fixed block is also provided with a receiving hole.

[0013] Further, the diameter of the end face of the supporting member close to the pushing screw hole is greater than the diameter of the pushing screw hole.

[0014] Further, the limiting strip has a rectangular, inverted triangular, inverted trapezoidal or T-shaped cross section.

[0015] Further, the fixed block is sequentially spliced in the circumferential direction by a plurality of sub-blocks corresponding in number and position to the abutting blocks; and the limiting strip corresponds in number and position to the sub-blocks.

[0016] Further, the abutting block is provided with a fixed tooth on the outer side in the circumferential direction.

[0017] Further, the fixed tooth is an inclined ratchet tooth.

[0018] The utility model discloses an advantageous effect is: through setting up the abutment block for inserting pipeline of at least three for arranging in turn periphery, set up the strutting apart piece of at least partial cone between a plurality of abutment blocks, set up fixed tooth on the abutment block, when the strutting apart piece moves along the axial direction, struts apart three abutment blocks, makes the fixed tooth on three abutment blocks and the pipeline inner wall tightly abut, has expanded the contact area of fixed tooth and big inside diameter pipeline inner wall, thereby has improved the stability of fixed tooth and big inside diameter pipeline connection, and need not in the tooth cover of setting up expansion diameter etc., makes the operation more convenient, can keep the advantage of simple structure and convenient operation, and can be better applicable to the problem of taking out big inside diameter pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is application state structure schematic diagram;

[0020] Figure 2 It is broken wire take-out device whole structure schematic diagram;

[0021] Figure 3 It is push screw hole structure schematic diagram;

[0022] Figure 4 It is strutting apart piece structure schematic diagram;

[0023] Figure 5 It is strutting apart piece's containing hole structure schematic diagram;

[0024] Figure 6 It is abutment block structure schematic diagram;

[0025] Figure 7 It is T-shaped limit strip structure schematic diagram;

[0026] Figure 8 It is the second limit strip structure schematic diagram.

[0027] In the drawing: 1, connecting block;2, push screw hole;3, fixed block;4, limit strip;5, clamping block;6, containing hole;7, push screw;8, strutting apart piece;9, abutment block;10, cooperation groove;11, fixed tooth;12, wall;13, to be taken pipe. DETAILED DESCRIPTION

[0028] The technical scheme in the utility model embodiment is clearly and completely described below in combination with the drawings and specific embodiments, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0029] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model, and are not intended to limit this utility model.

[0030] Example 1:

[0031] like Figures 1-7 As shown, a broken wire removal device includes at least three abutment blocks 9 sequentially assembled into a cylinder in the circumferential direction, a spreading member 8 located in the middle of all the abutment blocks 9 and capable of moving axially, a limiting structure for restricting the abutment blocks 9 to move only radially, and a pushing structure for pushing the spreading member 8 to move axially; the center, axial direction, circumferential direction, and radial direction are all relative to the cylinder or circular cross-section enclosed by all the abutment blocks; as shown Figure 1 As shown, the broken or fractured tube 13 to be removed is embedded in the wall 12 or pipe, and the abutment block 9 is inserted into the tube 13 to be removed;

[0032] like Figure 1 The left side is defined as the bottom of the whole or its components, and the right side is defined as the top.

[0033] The supporting member 8 is at least partially conical, and the conical shape is located near the abutting block 9 or at the center of the cylinder formed by all the abutting blocks 9; the inner wall of the abutting block 9 is constructed as a mating groove 10 that fits the conical shape of the supporting member 8, and all the mating grooves 10 are spliced ​​into a conical shape with the same or similar size as the conical shape of the supporting member. Initially, the conical side of the supporting member 8 fits against the inner wall constructed by all the abutting blocks 9; a slot is provided at the end of the supporting member 8.

[0034] A clamping block 5 is connected to the abutment block 9 radially; the limiting structure includes a limiting strip 4 arranged radially with the abutment block 9; the clamping block 5 and the limiting strip 4 are engaged and can move radially; the number of limiting strips 4 is equal to the number of abutment blocks 9 and corresponds one-to-one, and the limiting strip 4 and the corresponding abutment block 9 are located on the same diameter; the abutment block 9 is located at the end of the clamping block 5 near the center;

[0035] A receiving hole 6 is provided at the center of the spliced ​​limit strip 4, and the upper part of the support 8 passes through the receiving hole 6;

[0036] The pushing structure includes a pusher that is inserted from the left end of the receiving hole 6 and pushes the support member 8 toward the abutment block 9.

[0037] In this embodiment, the fixing block 3 is not provided.

[0038] In this embodiment, the connecting block 1 may be omitted. In this case, the three limiting strips 4 are connected to each other at their radially close ends, and a receiving hole 6 is opened in the middle.

[0039] As shown in Figure 8 The clamping block 5 is provided with a clamping groove, and the limiting strip 4 is arranged in the clamping groove.

[0040] The limiting strip 4 is of the same shape as the clamping groove, the clamping groove of the clamping block 5 is radially sleeved outside the limiting strip 4, and continues to move radially until the inner wall of the abutting block 9 abuts against the opening member 8.

[0041] The cross section of the limiting strip 4 is rectangular, triangular, trapezoidal, circular, polygonal or T-shaped, and other suitable shapes.

[0042] As shown in Figure 7 The limiting strip 4 is T-shaped, and the lower part of the T-shaped part can be connected with a fixed plate or not connected with a fixed plate. The T-shaped part is directly fixed to the surface of the fixed block 3. The fixed plate is fixed to the surface of the fixed block 3, and the upper clamping block is also provided with a T-shaped clamping groove.

[0043] Example two:

[0044] As shown in Figure 8 Different from example one, the pushing structure further comprises a connecting block 1 connected with the limiting strip 4, and the connecting block 1 is provided with a pushing screw hole 2 in the axial direction. The pushing member is a pushing screw 7 matched with the pushing screw hole 2. The pushing screw 7 moves axially in the pushing screw hole 2 through the threaded connection, thereby pushing the opening member 8. The cross section of the connecting block 1 is hexagonal, and the end surface of the pushing screw 7 is provided with an internal hexagonal hole.

[0045] The diameter of the pushing screw hole 2 is smaller than the diameter of the accommodating hole 6.

[0046] The diameter of the end surface of the opening member 8 close to the pushing screw hole 2 is greater than the diameter of the pushing screw hole 2 and smaller than the diameter of the accommodating hole 6, so as to prevent the opening member 8 from falling into the pushing screw hole 2 from the accommodating hole 6, and also to enable the opening member 8 to move flexibly in the accommodating hole 6.

[0047] In this embodiment, the fixed block 3 is not arranged, the limiting strip 4 is integrally arranged at the end of the connecting block 1, and the abutting block 9 slides on the limiting strip 4 through the clamping block 5.

[0048] Example three:

[0049] Different from example two, the fixed block 3 is arranged in this embodiment.

[0050] The limiting structure further comprises a fixed block 3 fixedly connected with the side of the limiting strip 9 away from the abutting block 9. The fixed block 3 is fixedly connected with the connecting block 1 and arranged in the radial direction. The fixed block 3 is also provided with an accommodating hole 6, and the accommodating hole 6 penetrates through the fixed block 3 and communicates with the accommodating holes 6 of the pushing screw hole 2 and the limiting strip 4.

[0051] The accommodating hole 6 of the fixed block 3 is collinear with the axis of the cylinder formed by all the abutting blocks 9, and the expanding member 8 is arranged in the accommodating hole 6 in the axial direction, and the accommodating hole 6 penetrates the fixed block 3 in the axial direction.

[0052] The fixed block 3 is sequentially spliced in the circumferential direction by a plurality of sub-blocks corresponding to the abutting blocks 9 in number and position; the number and position of the limiting strips 4 correspond to the sub-blocks, and are one-to-one correspondence; the sub-blocks are in the shape of a cuboid, if there are three, they are the same as the abutting blocks 9, each occupying 120 degrees of the circumference, and are divided into a plurality of sub-blocks, each of which is in the shape of a rhombus, facilitating the overall rotation to take out the pipe 13 to be taken out.

[0053] The abutting blocks 9 are provided with fixed teeth 11 on the outer side in the circumferential direction.

[0054] The fixed teeth 11 are inclined ratchets, which can better engage with the inner wall of the pipeline and be more stable and not easy to loosen.

[0055] By arranging at least three abutting blocks 9 for inserting into the pipeline in the circumferential direction, arranging at least a part of the expanding member 8 which is tapered between the abutting blocks 9, and arranging the fixed teeth 11 on the abutting blocks, when the expanding member moves in the axial direction, the three abutting blocks are expanded, and the fixed teeth on the three abutting blocks tightly abut against the inner wall of the pipeline, thereby increasing the contact area of the fixed teeth with the inner wall of the large-diameter pipeline, improving the stability of the connection of the fixed teeth with the large-diameter pipeline, and without the need to sleeve a tooth sleeve outside the fixed teeth, the operation is more convenient; it can not only maintain the advantages of simple structure and convenient operation, but also be better applicable to the problem of taking out the large-diameter pipeline.

[0056] In operation, the expanding member 8 is loaded into the accommodating hole 6, then the clamping block 5 with the abutting block 9 is radially slid from the outer side of the limiting strip 4 to the center until the matching groove 10 abuts against the expanding member 8, the abutting block 9 with the fixed teeth 11 is inserted into the pipe 13 to be taken out, the push screw 7 is screwed into the push screw hole 2, and the push screw 7 is further screwed to insert into the accommodating hole, and the expanding member 8 moves in the axial direction between the abutting blocks 9, due to the existence of the conical part, as the expanding member 8 moves, the abutting blocks 9 are expanded, until the fixed teeth 11 of the abutting blocks 9 abut against the inner wall of the pipe 13 to be taken out; a plurality of abutting blocks help to increase the contact area, then stop screwing the push screw 7, and rotate the broken wire taking-out device to drive the pipe 13 to be taken out to rotate, the rotation direction is toward the inclination direction of the ratchet, thereby taking out the pipe 13 to be taken out.

[0057] Example Four:

[0058] Different from example one, the limiting strip 4 is provided with a clamping groove, and the clamping block 5 is arranged in the clamping groove.

[0059] Example Five:

[0060] The clamping grooves in the first and fourth embodiments are all fully closed or provided with notches. The notches mean that part of one side is not closed, or at least one side is not closed. For example Figure 8 The not closed part of one side can be wide or narrow.

[0061] The above description is only used to illustrate the technical solutions of the present application, but not limit the present application. Other modifications or equivalent replacements to the technical solutions of the present application made by those skilled in the art should be covered in the scope of the claims of the present application.

Claims

1. A device for removing broken wires, characterized in that: It includes at least three abutting blocks (9) that are sequentially spliced ​​into cylinders in the circumferential direction, a support member (8) located in the middle of all abutting blocks (9) and capable of moving along the axial direction, a limiting structure for restricting the movement of the abutting blocks (9), and a pushing structure for pushing the support member (8) to move along the axial direction. The abutting block (9) is radially connected to a clamping block (5); the limiting structure includes a limiting strip (4) arranged radially along the abutting block (9); the clamping block (5) engages with the limiting strip (4) and can move radially; The center of the spliced ​​limiting strip (4) is provided with a receiving hole (6), and the upper part of the supporting member (8) passes through the receiving hole (6); The pushing structure includes a pusher that is inserted from the left end of the receiving hole (6) and pushes the spreader (8) toward the abutment block (9).

2. The broken wire removal device according to claim 1, characterized in that: The expander (8) is at least partially conical, and the conical shape is located near the abutment block (9) or at the center of the cylinder formed by all the abutment blocks (9); the inner wall of the abutment block (9) is configured to form a mating groove (10) that is adapted to the conical shape of the expander (8).

3. The broken wire removal device according to claim 1, characterized in that: There are two ways in which the clamping block (5) and the limiting strip (4) engage. The first way is that the clamping block (5) has a clamping groove and the limiting strip (4) is set in the clamping groove. The second way is that the limiting strip (4) has a clamping groove and the clamping block (5) is set in the clamping groove. The clamping grooves in both ways are either fully enclosed or have notches.

4. The broken wire removal device according to claim 1, characterized in that: The pushing structure also includes a connecting block (1) connected to the limiting strip (4), and the connecting block (1) has a pushing screw hole (2) along the axial direction; the pushing member is a pushing screw (7) that cooperates with the pushing screw hole (2); the diameter of the pushing screw hole (2) is smaller than the diameter of the receiving hole (6).

5. The broken wire removal device according to claim 4, characterized in that: The limiting structure also includes a fixing block (3) fixedly connected to the side of the limiting strip (4) away from the abutting block (9); the fixing block (3) is fixedly connected to the connecting block (1) and is arranged radially; the fixing block (3) is also provided with a receiving hole (6).

6. The broken wire removal device according to claim 2, characterized in that: The diameter of the end face of the support member (8) near the push screw hole (2) is larger than the diameter of the push screw hole (2).

7. The broken wire removal device according to claim 1, characterized in that: The cross-section of the limiting strip (4) is rectangular, triangular, trapezoidal, circular or T-shaped.

8. The broken wire removal device according to claim 5, characterized in that: The fixing block (3) is formed by sequentially splicing together several sub-blocks in the circumferential direction, the number and position of which correspond to the abutting block (9); the number and position of the limiting strip (4) correspond to the sub-blocks.

9. The broken wire removal device according to claim 1, characterized in that: The abutment block (9) has a fixing tooth (11) arranged circumferentially on its outer side.

10. A broken wire removal device according to claim 9, characterized in that: The fixed tooth (11) is an inclined ratchet.

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