Threading tool

Abstract

The present invention provides a bundle threading tool, which relates to the technical field of construction engineering. The bundle threading tool includes a cylinder, a clamping assembly and a push-pull member. Along the axial direction of the cylinder, the inner wall of the cylinder gradually shrinks. The clamping assembly includes at least two clamping members, and the plurality of clamping members are all arranged inside the cylinder, and the plurality of clamping members can slide along the extension direction of the inner wall of the cylinder to cooperate with clamping or loosening the steel strand. The push-pull member is arranged on the cylinder. In the bundle threading tool provided by the present invention, the plurality of clamping members are located around the steel strand and clamp the steel strand from multiple positions, and the cylinder body will give the clamping member a more suitable force so that the steel strand is clamped more firmly by the clamping member. The steel strand is not easy to slide during the pulling process, and the phenomenon that the movement of the cylinder cannot drive the movement of the steel strand is prevented from occurring. In addition, during the construction process, there is no need to repeatedly disassemble and install the cylinder, and only the cylinder needs to be pulled back and forth, which can improve the working efficiency of the bundle threading tool in threading the steel strand.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, in particular to a bundle threading tool. Background Art

[0002] Bridges generally refer to structures built on rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. Piers are the main support of the bridge, and the superstructure of the bridge is set on the piers.

[0003] When constructing a bridge with negative bending moment on the top of a pier that is simply supported first and then continuous, it is usually necessary to manually thread the steel strands 3'. Figure 1 to Figure 2 As shown, the first T-beam 1' and the second T-beam 2' are both reserved with corrugated tubes, and the corrugated tubes in the first T-beam 1' and the corrugated tubes in the second T-beam 2' are arranged at intervals. The worker first pushes the steel strand 3' into the corrugated tube in the first T-beam 1' until one end of the steel strand 3' can be inserted into the corrugated tube in the second T-beam 2', and then uses the crowbar 4' to cover the steel strand 3' and bend the crowbar 4' downward to clamp the steel strand 3', and drive the crowbar 4' to move toward the second T-beam 2' to pull the steel strand 3' into the corrugated tube in the second T-beam 2'. After the crowbar 4' moves to contact the second T-beam 2', the crowbar 4' is removed and the crowbar 4' is again placed on the position of the steel strand 3' near one end of the first T-beam 1' to pull again, and the above process is repeated repeatedly until the reserved lengths of the steel strand 3' in the first T-beam 1' and the second T-beam 2' meet the requirements.

[0004] There are two teeth 5' arranged at intervals on the crowbar 4', and the steel strand 3' is arranged between the two teeth 5'. When the crowbar 4' is bent downward, the two teeth 5' can clamp the steel strand 3'. However, the surface of the contact position between the steel strand 3' and the teeth 5' is relatively smooth, and the upper part of the steel strand 3' is in a suspended state. The steel strand 3' is easy to slide during the pulling process, and the steel strand 3' often does not move after pulling the crowbar 4' two or three times; and the operation of taking out the crowbar 4' and clamping the steel strand 3' with the crowbar 4' is required to be performed continuously, and the working efficiency of the bundle threading tool for bundling the steel strand 3' is low. Summary of the invention

[0005] The object of the present invention is to provide a bundle threading tool to solve the technical problem of low working efficiency of bundle threading steel strands by bundle threading tools in the prior art.

[0006] The bundle threading tool provided by the present invention comprises a barrel, a clamping assembly and a push-pull member;

[0007] Along the axial direction of the cylinder, the inner wall of the cylinder gradually contracts;

[0008] The clamping assembly comprises at least two clamping members, at least two of which are arranged inside the cylinder, and at least two of which can slide along the extension direction of the inner wall of the cylinder to cooperate in clamping or loosening the steel strand;

[0009] The push-pull member is arranged on the cylinder, and is used for pushing and pulling the cylinder to move.

[0010] Furthermore, the outer wall of the clamping member can fit with the inner wall of the cylinder.

[0011] Furthermore, a concave-convex structure is provided on the surface of the clamping member for contacting the steel strand.

[0012] Further, along the axial direction of the cylinder, two ends of the cylinder respectively have a first opening and a second opening, and the circumferential dimension of the first opening is greater than the circumferential dimension of the second opening;

[0013] A first stopper is provided on the first opening, and the first stopper is used to prevent the clamping member from sliding out of the cylinder. A through hole is provided on the first stopper, and the through hole is used to insert the steel strand.

[0014] Furthermore, a limiting member is provided at the end of the clamping member facing the first stopper, a limiting hole is provided on the first stopper, the limiting member passes through the limiting hole, and the limiting member can slide relative to the limiting hole.

[0015] Furthermore, a second stopper is provided at the end of the limiting member away from the clamping member, and the second stopper is used to prevent the end of the limiting member away from the clamping member from sliding out of the first stopper.

[0016] Furthermore, a connecting piece is provided on the clamping piece;

[0017] A groove is provided on the inner wall of the cylinder, the extension direction of the groove is arranged parallel to the extension direction of the inner wall of the cylinder, the connecting member extends into the groove, and the connecting member can slide along the extension direction of the groove.

[0018] Further, the cylinder comprises a first half cylinder and a second half cylinder;

[0019] The first half cylinder is covered on the second half cylinder to form a cylinder; and the first half cylinder is detachably connected to the second half cylinder.

[0020] Further, along the circumference of the first semi-cylinder, the first semi-cylinder has a first end and a second end;

[0021] Along the circumference of the second half cylinder, the second half cylinder has a third end and a fourth end;

[0022] The first end is hinged to the third end, and the second end is detachably connected to the fourth end.

[0023] Furthermore, the first end and the third end are hinged via a pin, and the second end and the fourth end are detachably connected via a latch, a clamp or a fixture.

[0024] The bundle threading tool provided by the present invention comprises a cylinder, a clamping assembly and a push-pull member; the inner wall of the cylinder is gradually reduced along the axial direction of the cylinder; the clamping assembly comprises at least two clamping members, at least two of the clamping members are arranged inside the cylinder, and at least two of the clamping members can slide along the extension direction of the inner wall of the cylinder to cooperate in clamping or loosening the steel strand; the push-pull member is arranged on the cylinder, and the push-pull member is used to push and pull the cylinder to move. The steel strand is passed through the cylinder, and multiple clamping members are located around the steel strand, and when the user holds the push-pull member to drive the cylinder to move along the first axial direction of the cylinder, the cylinder and the clamping member produce relative movement, and the multiple clamping members move from the end with the larger circumferential dimension of the inner wall of the cylinder to the end with the smaller circumferential dimension of the inner wall of the cylinder, so that the distance between the multiple clamping members is reduced, so that the multiple clamping members can cooperate to clamp the steel strand, and continue to drive the cylinder to move along the first axial direction of the cylinder, and thus pull the steel strand to move; until the cylinder moves to the first extreme position along the first axial direction of the cylinder, the user holds the push-pull member to drive the cylinder along the second axial direction of the cylinder. The cylinder moves in two directions (the second direction is opposite to the first direction), and relative movement occurs between the cylinder and the clamping member. The multiple clamping members move from the end of the cylinder with a smaller circumferential dimension of the inner wall to the end of the cylinder with a larger circumferential dimension of the inner wall, so that the distance between the multiple clamping members is enlarged, so that the multiple clamping members can cooperate to loosen the steel strands, and continue to drive the cylinder to move along the second axial direction of the cylinder. The steel strands will not be pulled, and the cylinder can move along the second axial direction of the cylinder to the second extreme position; then the action of driving the cylinder to move along the first axial direction of the cylinder is repeated to continue to pull the steel strands to move, and this is repeated continuously to pull the steel strands to a suitable position. The bundle threading tool provided by the present invention has multiple clamping parts located around the steel strands to clamp the steel strands at multiple positions, and the cylinder body will give the clamping parts a more appropriate force so that the steel strands are clamped more firmly by the clamping parts. During the pulling process, the steel strands are not easy to slide, which prevents the phenomenon that the movement of the cylinder body cannot drive the movement of the steel strands. In addition, during the construction process, there is no need to repeatedly disassemble and install the cylinder body, and it is only necessary to pull the cylinder body back and forth, which can improve the work efficiency of the bundle threading tool in threading the steel strands. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of a first T-beam and a second T-beam in the prior art;

[0027] Figure 2 It is a diagram of the use state of a crowbar in the prior art;

[0028] Figure 3 is a cross-sectional view of a beam threading tool provided in an embodiment of the present invention;

[0029] Figure 4 1 is a diagram of the use state of the bundle threading tool provided in an embodiment of the present invention (when the clamping member clamps the steel strand);

[0030] Figure 5 1 is a diagram of the use state of the bundle threading tool provided in an embodiment of the present invention (when the clamping member releases the steel strand);

[0031] Figure 6 1 is a side view of the bundle threading tool provided by an embodiment of the present invention (when the first half cylinder and the second half cylinder are loosened);

[0032] Figure 7 1 is a side view of the bundle threading tool provided by an embodiment of the present invention (when the first half cylinder and the second half cylinder are buckled together);

[0033] Figure 8 It is a front view of the first stopper of the bundle threading tool provided in an embodiment of the present invention.

[0034] Icons: 1-cylinder; 11-first half-cylinder; 12-second half-cylinder; 13-first opening; 14-second opening; 111-first end; 112-second end; 121-third end; 122-fourth end; 2-clamping member; 21-limiting member; 3-pushing and pulling member; 4-first stopper; 41-limiting hole; 42-first semi-annular stopper; 43-second semi-annular stopper; 5-second stopper; 6-steel strand; 1'-first T-beam; 2'-second T-beam; 3'-steel strand; 4'-crowbar; 5'-tooth. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described in a clear and initial state in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The present invention provides a beam threading tool. A plurality of embodiments are given below to describe the beam threading tool provided by the present invention in detail.

[0037] The beam threading tool provided in this embodiment is as follows: Figures 1 to 8 As shown, it includes a cylinder 1, a clamping assembly and a push-pull member 3; along the axial direction of the cylinder 1, the inner wall of the cylinder 1 is gradually reduced; the clamping assembly includes at least two clamping members 2, at least two clamping members 2 are arranged inside the cylinder 1, and at least two clamping members 2 can slide along the extension direction of the inner wall of the cylinder 1 to cooperate with clamping or loosening the steel strand 6; the push-pull member 3 is arranged on the cylinder 1, and the push-pull member 3 is used to push and pull the cylinder 1 to move.

[0038] The inner wall of the cylinder 1 may be in any suitable form, such as a cone or a square cone.

[0039] The clamping assembly may include two clamping members 2 , or may include any number of clamping members 2 such as four, five or six.

[0040] The steel strand 6 is passed through the cylinder 1, and multiple clamping members 2 are located around the steel strand 6. When the user holds the push-pull member 3 to drive the cylinder 1 to move along the first axial direction of the cylinder 1, the cylinder 1 and the clamping member 2 produce relative movement, and the multiple clamping members 2 move from the end of the inner wall of the cylinder 1 with a larger circumferential dimension to the end of the inner wall of the cylinder 1 with a smaller circumferential dimension, so that the distance between the multiple clamping members 2 is reduced, so that the multiple clamping members 2 can cooperate to clamp the steel strand 6, and continue to drive the cylinder 1 to move along the first axial direction of the cylinder 1, so as to pull the steel strand 6 to move; until the cylinder 1 moves to the first extreme position along the first axial direction of the cylinder 1, the user holds the push-pull member 3 to drive the cylinder 1 along the axis of the cylinder 1 The cylinder 1 moves in a second direction (the second direction is opposite to the first direction), and relative movement occurs between the cylinder 1 and the clamping member 2. The multiple clamping members 2 move from the end of the inner wall of the cylinder 1 with a smaller circumferential dimension to the end of the inner wall of the cylinder 1 with a larger circumferential dimension, so that the distance between the multiple clamping members 2 is enlarged, so that the multiple clamping members 2 can cooperate to loosen the steel strand 6, and continue to drive the cylinder 1 to move along the second axial direction of the cylinder 1. The steel strand 6 will not be pulled, and the cylinder 1 can move along the second axial direction of the cylinder 1 to the second extreme position; then the action of driving the cylinder 1 to move along the first axial direction of the cylinder 1 is repeated to continue to pull the steel strand 6 to move, and this is repeated continuously to pull the steel strand 6 to a suitable position.

[0041] The bundle threading tool provided in this embodiment has multiple clamping parts 2 located around the steel strand 6 to clamp the steel strand 6 at multiple positions, and the cylinder 1 will give a more appropriate force to the clamping parts 2 so that the steel strand 6 is clamped more firmly by the clamping parts 2. During the pulling process, the steel strand 6 is not easy to slide, which prevents the phenomenon that the movement of the cylinder 1 cannot drive the steel strand 6 to move. In addition, there is no need to repeatedly disassemble and install the cylinder 1 during the construction process, and it is only necessary to pull the cylinder 1 back and forth, which can improve the working efficiency of the bundle threading tool in threading the steel strands.

[0042] Among them, the extension direction of the inner wall of the cylinder 1 relative to the axial direction of the cylinder 1 has a first inclination, and the extension direction of the outer wall of the clamping member 2 relative to the axial direction of the cylinder 1 has a second inclination. The first inclination and the second inclination can be the same or different, as long as multiple clamping members 2 can slide along the extension direction of the inner wall of the cylinder 1 to cooperate in clamping or loosening the steel strand 6.

[0043] Preferably, the outer wall of the clamp 2 can fit with the inner wall of the cylinder 1. That is, the first inclination and the second inclination are the same, so that the outer wall of the clamp 2 can fit more closely with the inner wall of the cylinder 1, and the clamp 2 can move more smoothly relative to the cylinder 1. When the clamp 2 moves to a position where the steel strand 6 can be clamped, the outer wall of the clamp 2 can fit with the inner wall of the cylinder 1, so that the clamp 2 can clamp the steel strand 6 more stably and prevent the steel strand 6 from slipping.

[0044] The surface of the clamping member 2 facing the steel strand 6 is used to contact the steel strand 6. When the surfaces of the multiple clamping members 2 used to contact the steel strand 6 are all in contact with the steel strand 6, the multiple clamping members 2 cooperate to clamp the steel strand 6.

[0045] The surface of the clamping member 2 that contacts the steel strand 6 may be a flat surface or an arc surface or any other suitable form.

[0046] Preferably, the surface of the clamp 2 for contacting the steel strand 6 is a curved surface, which can fit the outer surface of the steel strand 6, so that the clamp 2 can be better wrapped around the outer surface of the steel strand 6, thereby improving the clamping effect.

[0047] Furthermore, a concave-convex structure is provided on the surface of the clamp 2 for contacting the steel strand 6. The concave-convex structure can increase the friction between the clamp 2 and the steel strand 6 to prevent the steel strand 6 and the clamp 2 from slipping, thereby making it difficult to pull the steel strand 6.

[0048] The concave-convex structure may be in any suitable form such as a thread shape or a matrix shape.

[0049] Furthermore, along the axial direction of the cylinder 1, the two ends of the cylinder 1 respectively have a first opening 13 and a second opening 14, and the circumferential size of the first opening 13 is larger than the circumferential size of the second opening 14; the first opening 13 is provided with a first stopper 4, and the first stopper 4 is used to prevent the clamping member 2 from sliding out of the cylinder 1, and the first stopper 4 is provided with a through hole, and the through hole is used to insert the steel strand 6.

[0050] Among them, the first stopper 4 can be a baffle or a baffle frame and any other suitable form, as long as the first stopper 4 can prevent the clamping member 2 from sliding out of the cylinder 1, thereby limiting the axial movement of the clamping member 2 along the cylinder 1 to prevent the clamping member 2 from sliding out of the cylinder 1 through the first opening 13.

[0051] In order to limit the circumferential position of the inner wall of the cylinder 1 for the clamping member, as an embodiment, a limiting member 21 is provided at the end of the clamping member 2 facing the first stopper 4, and a limiting hole 41 is provided on the first stopper 4. The limiting member 21 passes through the limiting hole 41 and can slide relative to the limiting hole 41.

[0052] The limiting member 21 may be a limiting rod, or a limiting block or any other suitable form.

[0053] When the clamping member 2 moves along the extension direction of the inner wall of the cylinder 1, the limiting member 21 also slides relative to the limiting hole 41, thereby preventing the clamping member from moving circumferentially along the inner wall of the cylinder 1, and can improve the synchronization of the sliding of multiple clamping members 2 to prevent the clamping members 2 from getting stuck.

[0054] Furthermore, a second stopper 5 is provided at the end of the limiting member 21 away from the clamping member 2 , and the second stopper 5 is used to prevent the end of the limiting member 21 away from the clamping member 2 from sliding out of the first stopper 4 .

[0055] The second stopper 5 may be a stopper, or a stopper, or any other suitable form.

[0056] When the clamping member 2 slides toward the second opening 14 to the limit position, the second stopper 5 abuts against the first stopper 4, thereby preventing the limiting member 21 from sliding out of the first stopper 4, thereby preventing the clamping member 2 from sliding out of the cylinder 1 through the second opening 14. In addition, the phenomenon of multiple clamping members 2 being stuck due to asynchronous movement can be avoided.

[0057] As another embodiment, a connecting piece is provided on the clamping piece 2; a groove is provided on the inner wall of the cylinder 1, the extension direction of the groove is parallel to the extension direction of the inner wall of the cylinder 1, the connecting piece extends into the groove, and the connecting piece can slide along the extension direction of the groove.

[0058] Specifically, the clamping member 2 is slidably connected to the inner wall of the cylinder 1 through a connecting member. When sliding, the clamping member 2 slides along the extension direction of the groove, thereby preventing the clamping member from moving circumferentially along the inner wall of the cylinder 1, and can improve the synchronization of the sliding of multiple clamping members 2 to prevent the clamping members 2 from getting stuck.

[0059] The cylinder 1 may be an integrated structure or a split structure.

[0060] Preferably, the cylinder 1 comprises a first half cylinder 11 and a second half cylinder 12; the first half cylinder 11 covers the second half cylinder 12 to form a cylindrical shape; and the first half cylinder 11 and the second half cylinder 12 are detachably connected.

[0061] The first cylinder 1 and the second cylinder 1 may be connected in a threaded connection or in any other suitable manner such as a clamping connection.

[0062] The cylinder 1 is composed of a first half cylinder 11 and a second half cylinder 12. A clamping member 2 can be respectively arranged in the first half cylinder 11 and the second half cylinder 12, which can facilitate the installation of the clamping member 2. When the steel strand 6 is loaded, the steel strand 6 can be placed on the clamping member 2 in the second half cylinder 12 and passed through the second half cylinder 12. Then, the first half cylinder 11 is covered on the second half cylinder 12, and the first half cylinder 11 and the second half cylinder 12 are detachably connected, which has high portability.

[0063] When the cylinder 1 is composed of a first half cylinder 11 and a second half cylinder 12, if a first stopper 4 is provided on the first opening 13, the first stopper 4 can also be divided into a first semi-annular stopper 42 and a second semi-annular stopper 43. The first semi-annular stopper 42 is provided on the first opening 13 of the first half cylinder 11, and the second semi-annular stopper 43 is provided on the second opening 14 of the second half cylinder 12. After the first half cylinder 11 and the second half cylinder 12 are covered, the first semi-annular stopper 42 and the second semi-annular stopper 43 form a complete first stopper 4.

[0064] Furthermore, along the circumference of the first half cylinder 11, the first half cylinder 11 has a first end 111 and a second end 112; along the circumference of the second half cylinder 12, the second half cylinder 12 has a third end 121 and a fourth end 122; the first end 111 is hinged to the third end 121, and the second end 112 is detachably connected to the fourth end 122.

[0065] The hinged connection between the first end 111 and the third end 121 can enhance the convenience of covering the first half cylinder 11 and the second half cylinder 12, and facilitate the construction operation.

[0066] The first end 111 and the third end 121 may be hinged via a hinge or a pin.

[0067] In this embodiment, the first end 111 and the third end 121 are hinged via a pin, and the second end 112 and the fourth end 122 are detachably connected via a latch, a clamp or a fixture.

[0068] The bundle threading tool provided in this embodiment has multiple clamping parts 2 located around the steel strand 6 to clamp the steel strand 6 at multiple positions, and the cylinder 1 will give a more appropriate force to the clamping parts 2 so that the steel strand 6 is clamped more firmly by the clamping parts 2. During the pulling process, the steel strand 6 is not easy to slide, which prevents the phenomenon that the movement of the cylinder 1 cannot drive the steel strand 6 to move. In addition, there is no need to repeatedly disassemble and install the cylinder 1 during the construction process, and it is only necessary to pull the cylinder 1 back and forth, which can improve the working efficiency of the bundle threading tool in threading the steel strands.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A harness threading tool, characterized in that: It includes a cylinder, a clamping assembly and a push-pull member; Along the axial direction of the cylinder, the inner wall of the cylinder gradually contracts; The clamping assembly comprises at least two clamping members, both of which are arranged inside the cylinder, and both of which can slide along the extension direction of the inner wall of the cylinder to cooperate in clamping or loosening the steel strand; The push-pull member is arranged on the cylinder, and the push-pull member is used to push and pull the cylinder to move; The outer wall of the clamping member can fit with the inner wall of the cylinder; A concave-convex structure is arranged on the surface of the clamping member for contacting with the steel strand.

2. The harness threading tool according to claim 1, characterized in that: Along the axial direction of the cylinder, two ends of the cylinder are respectively provided with a first opening and a second opening, and the circumferential dimension of the first opening is larger than the circumferential dimension of the second opening; A first stopper is provided on the first opening, and the first stopper is used to prevent the clamping member from sliding out of the cylinder. A through hole is provided on the first stopper, and the through hole is used to insert the steel strand.

3. The harness threading tool according to claim 2, characterized in that: A limiting member is provided at the end of the clamping member facing the first stopper. A limiting hole is provided on the first stopper. The limiting member passes through the limiting hole and can slide relative to the limiting hole.

4. The bundle threading tool according to claim 3, characterized in that: A second stopper is provided at the end of the limiting member away from the clamping member, and the second stopper is used to prevent the end of the limiting member away from the clamping member from sliding out of the first stopper.

5. The harness threading tool according to claim 1, characterized in that: The clamping member is provided with a connecting member; A groove is provided on the inner wall of the cylinder, the extension direction of the groove is arranged parallel to the extension direction of the inner wall of the cylinder, the connecting member extends into the groove, and the connecting member can slide along the extension direction of the groove.

6. The harness threading tool according to claim 1, characterized in that: The cylinder comprises a first half cylinder and a second half cylinder; The first half cylinder is covered on the second half cylinder to form a cylinder; and the first half cylinder is detachably connected to the second half cylinder.

7. The bundle threading tool according to claim 6, characterized in that: Along the circumference of the first half cylinder, the first half cylinder has a first end and a second end; Along the circumference of the second half cylinder, the second half cylinder has a third end and a fourth end; The first end is hinged to the third end, and the second end is detachably connected to the fourth end.

8. The harness threading tool according to claim 7, characterized in that: The first end is hinged to the third end via a pin, and the second end is detachably connected to the fourth end via a latch, a clamp or a fixture.

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