Pipeline hoisting clamp

Abstract

The utility model belongs to the technical field of municipal pipeline construction, and discloses a pipeline hoisting clamp. The pipeline hoisting clamp comprises a connecting rod, a pull rod assembly, a clamping assembly and an extension spring assembly. The connecting rod is used for being connected with a crane. The pull rod assembly comprises a first pull rod and a second pull rod; the first pull rod and the second pull rod are rotationally connected to the connecting rod; the clamping assembly comprises a first clamping piece and a second clamping piece, the first clamping piece comprises a first straight rod part and a first clamping arm, and the second clamping piece comprises a second straight rod part and a second clamping arm; the first straight rod part and the second straight rod part are rotationally matched and rotate relatively to drive the first clamping arm and the second clamping arm to get close to each other, so that the first clamping arm and the second clamping arm abut against the two sides of the pipeline correspondingly to clamp the pipeline; the extension spring assembly is configured to enable the first clamping arm and the second clamping arm to have the movement tendency of being always away from each other. The pipeline hoisting clamp can automatically return to the initial position under the action of the extension spring assembly, and clamping is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal pipeline construction, in particular to a pipeline hoisting clamp. Background Art

[0002] Socket-and-spigot concrete pipes are usually used in municipal water supply and drainage projects. When installing concrete pipes, slings or wire ropes are generally used to tie the pipes, and then a crane is used to lift the concrete pipes. The above lifting method requires special personnel to tie and untie the pipes, which is time-consuming and labor-intensive. At the same time, due to the different tightness of each binding, the pipes will fluctuate during the lifting process. If the binding is not firm, the pipes may become loose, so there is a great safety hazard. Utility Model Content

[0003] The utility model aims to provide a pipeline hoisting clamp with a simple structure, which can automatically return to an initial position after the pipeline is hoisted.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a pipeline hoisting clamp, comprising:

[0006] A connecting rod, the connecting rod is used to connect with the crane;

[0007] A tie rod assembly, the tie rod assembly comprising a first tie rod and a second tie rod, the first tie rod having a first end and a second end, the second tie rod having a third end and a fourth end, the first end and the third end being both rotatably connected to the connecting rod;

[0008] A clamping assembly, the clamping assembly comprising a first clamping member and a second clamping member, the first clamping member comprising a first straight rod portion and a first clamping arm connected to each other, the second clamping member comprising a second straight rod portion and a second clamping arm connected to each other; the first straight rod portion and the second straight rod portion are rotationally matched, the first straight rod portion is rotationally connected to the second end, and the second straight rod portion is rotationally connected to the fourth end;

[0009] The relative rotation of the first straight rod portion and the second straight rod portion can drive the first clamp arm and the second clamp arm to approach each other, so that the first clamp arm and the second clamp arm respectively abut against two sides of the pipe to be hoisted to clamp the pipe to be hoisted;

[0010] A tension spring assembly is disposed between the first clamping member and the second clamping member, and is configured to make the first clamping arm and the second clamping arm have a tendency to always move away from each other.

[0011] Preferably, both the first clamping arm and the second clamping arm are arc-shaped structures.

[0012] Preferably, the pipeline hanging clamp further comprises a pin shaft, and the first straight rod portion and the second straight rod portion are rotatably connected via the pin shaft.

[0013] Preferably, the tension spring assembly comprises a first tension spring and a second tension spring, and the first tension spring and the second tension spring are symmetrically arranged between the first clamping member and the second clamping member on both sides about a first straight line.

[0014] Preferably, a first hanging hole is formed on the first straight rod portion, a second hanging hole is formed on the second straight rod portion, one end of the first tension spring is arranged on the first straight rod portion, and the other end of the first tension spring is hung in the second hanging hole; one end of the second tension spring is arranged on the second straight rod portion, and the other end of the second tension spring is hung in the first hanging hole.

[0015] Preferably, a plurality of the first hanging holes are spaced apart along the length direction of the first straight rod portion; and a plurality of the second hanging holes are spaced apart along the length direction of the second straight rod portion.

[0016] Preferably, a flexible pad is provided on both the first clamping arm and the second clamping arm.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a pipe lifting clamp, in which the first straight rod portion and the second straight rod portion are rotatably connected to the first pull rod and the second pull rod respectively. Since the first straight rod portion is rotatably matched with the second straight rod portion, the first straight rod portion and the second straight rod portion can be driven to rotate by rotating the first pull rod and the second pull rod, thereby further driving the first clamp arm and the second clamp arm to approach each other to clamp the pipe to be lifted. Since the first pull rod is rotatably connected to the connecting rod through the first end, and the second pull rod is rotatably connected to the connecting rod through the third end, the connecting rod is used to connect to the crane, so the crane is lifted by pulling the connecting rod. The first pull rod and the second pull rod can be driven to rotate so as to clamp the pipe to be lifted. There is no need to bundle the pipe to be lifted separately. The structure is simple, time-saving and labor-saving. Since a tension spring assembly is arranged between the first clamping member and the second clamping member, the tension spring assembly can apply elastic force to the first clamping member and the second clamping member so that the first clamping arm and the second clamping arm have a tendency to always move away from each other. After the pipe to be lifted is lifted to the specified position, the clamping assembly can automatically return to the initial position under the elastic force of the tension spring assembly, so as to facilitate the next pipe clamping operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a structural schematic diagram of a pipeline lifting clamp provided by a specific implementation method of the utility model.

[0020] In the figure:

[0021] 1- Connecting rod;

[0022] 2-tie rod assembly; 21-first tie rod; 22-second tie rod;

[0023] 3-clamping assembly; 31-first clamping member; 311-first straight rod; 3111-first hanging hole; 312-first clamping arm; 32-second clamping member; 321-second straight rod; 3211-second hanging hole; 322-second clamping arm; 33-pin shaft;

[0024] 4-tension spring assembly; 41-first tension spring; 42-second tension spring. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0029] like Figure 1 As shown, the utility model provides a pipeline hoisting clamp, which includes a connecting rod 1, a tie rod assembly 2, a clamping assembly 3 and a tension spring assembly 4, wherein the connecting rod 1 is used to connect with a crane; the tie rod assembly 2 includes a first tie rod 21 and a second tie rod 22, wherein the first tie rod 21 has a first end and a second end, and the second tie rod 22 has a third end and a fourth end, and the first end and the third end are both rotatably connected to the connecting rod 1; the clamping assembly 3 includes a first clamping member 31 and a second clamping member 32, wherein the first clamping member 31 includes a first straight rod portion 3 connected to the first straight rod portion 31 and the second straight rod portion 32 are ... 11 and the first clamping arm 312, the second clamping member 32 includes a second straight rod portion 321 and a second clamping arm 322 connected to each other; the first straight rod portion 311 and the second straight rod portion 321 are rotatably matched, the first straight rod portion 311 is rotatably connected to the second end, and the second straight rod portion 321 is rotatably connected to the fourth end; the relative rotation of the first straight rod portion 311 and the second straight rod portion 321 can drive the first clamping arm 312 and the second clamping arm 322 to approach each other, so that the first clamping arm 312 and the second clamping arm 322 respectively abut against the two sides of the pipe to be lifted to clamp the pipe to be lifted. In this embodiment, the first straight rod portion 311 and the second straight rod portion 321 are rotatably connected to the first tie rod 21 and the second tie rod 22 respectively, and the first straight rod portion 311 and the second straight rod portion 321 are cross-shaped and rotatably matched, so that the first tie rod 21 and the second tie rod 22 can be rotated to drive the first straight rod portion 311 and the second straight rod portion 321 to rotate, thereby further driving the first clamping arm 312 and the second clamping arm 322 to approach each other to clamp the pipe to be hoisted; since the first tie rod 21 is rotatably connected to the connecting rod 1 through the first end The second pull rod 22 is rotatably connected to the connecting rod 1 through the third end. The connecting rod 1 is used to connect with the crane. Therefore, the crane can drive the first pull rod 21 and the second pull rod 22 to rotate by pulling the connecting rod 1, thereby clamping the pipe to be lifted. There is no need to bundle the pipe to be lifted separately. The structure is simple, time-saving and labor-saving. Specifically, the first pull rod 21, the second pull rod 22 and the connecting rod 1 are pin-connected, the first pull rod 21 and the first straight rod portion 311, the second pull rod 22 and the second straight rod portion 321 are also pin-connected, and the connection can rotate freely.

[0030] The tension spring assembly 4 is arranged between the first clamping member 31 and the second clamping member 32, and the tension spring assembly 4 is configured to make the first clamping arm 312 and the second clamping arm 322 have a tendency to move away from each other all the time. In this embodiment, since the tension spring assembly 4 is arranged between the first clamping member 31 and the second clamping member 32, the tension spring assembly 4 can apply elastic force to the first clamping member 31 and the second clamping member 32 so that the first clamping arm 312 and the second clamping arm 322 have a tendency to move away from each other all the time; after the pipeline to be hoisted is hoisted to the designated position, the construction personnel take the pipeline to be hoisted out of the first clamping arm 312 and the second clamping arm 322, and then the clamping assembly 3 can automatically return to the initial position under the elastic force of the tension spring assembly 4, and at this time, the distance between the first clamping arm 312 and the second clamping arm 322 becomes larger, so as to facilitate the next pipeline clamping operation.

[0031] Furthermore, if Figure 1 As shown, the first clamping arm 312 and the second clamping arm 322 are both arc-shaped structures. Specifically, the first clamp arm 312 and the second clamp arm 322 of the arc-shaped structure can better abut against the pipe to be lifted, thereby facilitating lifting; when the first clamp arm 312 and the second clamp arm 322 are placed in place on the pipe to be lifted, the arc-shaped first clamp arm 312 and the second clamp arm 322 can surround the pipe to be lifted from both sides, and the ends of the first clamp arm 312 and the second clamp arm 322 are located at the bottom of the pipe to be lifted and abut against the bottom of the pipe to be lifted. At this time, the first clamp arm 312 and the second clamp arm 322 will automatically approach and clamp the pipe to be lifted under the action of the gravity of the pipe to be lifted, thereby forming a stable self-locking structure, so that the clamping assembly 3 can always be in close contact with the pipe to be lifted, thereby preventing the pipe to be lifted from falling off; it can be understood that the gravity of the pipe to be lifted is much greater than the elastic force applied by the tension spring assembly 4 to the clamping assembly 3, thereby preventing the first clamp arm 312 and the second clamp arm 322 from opening due to excessive elastic force.

[0032] Furthermore, if Figure 1 As shown, the pipe hoisting fixture is characterized in that it also includes a pin shaft 33, and the first straight rod portion 311 and the second straight rod portion 321 are rotatably connected through the pin shaft 33. In this embodiment, the first straight rod portion 311 and the second straight rod portion 321 are both provided with through holes, and the pin shaft 33 sequentially passes through the through holes on the first straight rod portion 311 and the second straight rod portion 321 and is fixed, and the first straight rod portion 311 and the second straight rod portion 321 can freely rotate around the pin shaft 33, with a simple structure and low manufacturing cost.

[0033] Specifically, Figure 1As shown, the tension spring assembly 4 includes a first tension spring 41 and a second tension spring 42, and the first tension spring 41 and the second tension spring 42 are symmetrically arranged between the first clamping member 31 and the second clamping member 32 on both sides about the first straight line. In this embodiment, the first straight line is a vertical straight line where the pin shaft 33 is located, and the two ends of the first tension spring 41 are respectively arranged on the first clamping member 31 and the second clamping member 32, and the second tension spring 42 and the first tension spring 41 are symmetrically arranged about the first straight line, and the two ends of the second tension spring 42 are respectively arranged on the second clamping member 32 and the first clamping member 31; the first tension spring 41 and the second tension spring 42 are symmetrically arranged about the first straight line, ensuring that the first clamping member 31 and the second clamping member 32 can evenly and symmetrically clamp the pipe to be hoisted, thereby improving the reliability of the pipe hoisting clamp.

[0034] Specifically, Figure 1 As shown, a first hanging hole 3111 is provided on the first straight rod portion 311, a second hanging hole 3211 is provided on the second straight rod portion 321, one end of the first tension spring 41 is arranged on the first straight rod portion 311, and the other end of the first tension spring 41 is hung in the second hanging hole 3211; one end of the second tension spring 42 is arranged on the second straight rod portion 321, and the other end of the second tension spring 42 is hung in the first hanging hole 3111. In this embodiment, the end of the first tension spring 41 is hung in the first hanging hole 3111 on the first straight rod portion 311, and the end of the second tension spring 42 is hung in the second hanging hole 3211 of the second straight rod portion 321, so as to facilitate the removal and replacement of the springs.

[0035] Specifically, Figure 1 As shown, a plurality of first hanging holes 3111 are provided at intervals along the length direction of the first straight rod 311; a plurality of second hanging holes 3211 are provided at intervals along the length direction of the second straight rod 321. In this embodiment, a plurality of first hanging holes 3111 are provided at intervals on the first straight rod 311, and a plurality of second hanging holes 3211 are provided at intervals on the second straight rod 321, so that the positions at which the ends of the first tension spring 41 and the second tension spring 42 are hung can be adjusted according to the weight of the pipe to be hoisted; for example, when the weight of the pipe to be hoisted is small, the end of the first tension spring 41 can be adjusted to the second hanging hole 3211 closer to the other end of the first tension spring 41 and hung, thereby reducing the elastic force applied by the first tension spring 41 to the clamping assembly 3, and the second tension spring 42 is also adjusted in the same manner; thereby ensuring that the first clamp arm 312 and the second clamp arm 322 can always clamp the pipe to be hoisted.

[0036] Furthermore, a flexible pad is provided on both the first clamp arm 312 and the second clamp arm 322. Specifically, the flexible pad can be a rubber pad or a sponge pad, which is not limited here; the flexible pad can prevent the first clamp arm 312 and the second clamp arm 322 from damaging the outer wall of the pipeline when clamping the pipeline to be hoisted, thereby effectively protecting the pipeline.

[0037] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Pipe lifting fixture, characterized in that: include: A connecting rod (1), wherein the connecting rod (1) is used to be connected to a crane; A tie rod assembly (2), the tie rod assembly (2) comprising a first tie rod (21) and a second tie rod (22), the first tie rod (21) having a first end and a second end, the second tie rod (22) having a third end and a fourth end, the first end and the third end being rotatably connected to the connecting rod (1); A clamping assembly (3), the clamping assembly (3) comprising a first clamping member (31) and a second clamping member (32), the first clamping member (31) comprising a first straight rod portion (311) and a first clamping arm (312) connected to each other, the second clamping member (32) comprising a second straight rod portion (321) and a second clamping arm (322) connected to each other; the first straight rod portion (311) and the second straight rod portion (321) are rotationally matched, the first straight rod portion (311) is rotationally connected to the second end, and the second straight rod portion (321) is rotationally connected to the fourth end; The relative rotation of the first straight rod portion (311) and the second straight rod portion (321) can drive the first clamping arm (312) and the second clamping arm (322) to approach each other, so that the first clamping arm (312) and the second clamping arm (322) respectively abut against two sides of the pipe to be hoisted to clamp the pipe to be hoisted; A tension spring assembly (4), wherein the tension spring assembly (4) is arranged between the first clamping member (31) and the second clamping member (32), and the tension spring assembly (4) is configured to make the first clamping arm (312) and the second clamping arm (322) have a tendency to always move away from each other.

2. The pipe lifting fixture according to claim 1, characterized in that: The first clamping arm (312) and the second clamping arm (322) are both arc-shaped structures.

3. The pipeline hoisting fixture according to claim 1, characterized in that: The pipeline hanging fixture also includes a pin shaft (33), and the first straight rod portion (311) and the second straight rod portion (321) are rotatably connected via the pin shaft (33).

4. The pipeline hoisting fixture according to claim 3, characterized in that: The tension spring assembly (4) comprises a first tension spring (41) and a second tension spring (42), wherein the first tension spring (41) and the second tension spring (42) are symmetrically arranged between the first clamping member (31) and the second clamping member (32) on both sides about a first straight line.

5. The pipeline hoisting fixture according to claim 4, characterized in that: The first straight rod portion (311) is provided with a first hanging hole (3111), the second straight rod portion (321) is provided with a second hanging hole (3211), one end of the first tension spring (41) is arranged on the first straight rod portion (311), and the other end of the first tension spring (41) is hung in the second hanging hole (3211); one end of the second tension spring (42) is arranged on the second straight rod portion (321), and the other end of the second tension spring (42) is hung in the first hanging hole (3111).

6. The pipeline hoisting fixture according to claim 5, characterized in that: A plurality of the first hanging holes (3111) are provided at intervals along the length direction of the first straight rod portion (311); and a plurality of the second hanging holes (3211) are provided at intervals along the length direction of the second straight rod portion (321).

7. The pipeline hoisting fixture according to claim 1, characterized in that: A flexible pad is provided on both the first clamping arm (312) and the second clamping arm (322).

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