Rectangular jacking pipe joint lifting appliance

Abstract

The utility model discloses a rectangular jacking pipe joint lifting appliance, which is characterized in that a first lug plate and a second lug plate are symmetrically and fixedly connected to two ends of the top of a cross beam, the first lug plate and the second lug plate are respectively connected with a sling, and a first fixed hinged support and a second fixed hinged support are symmetrically and fixedly connected to the bottom of the cross beam; the first fixed hinged support and the second fixed hinged support are hinged to the first movable hinged plate and the second movable hinged plate through rotating shafts respectively, the first movable hinged plate and the second movable hinged plate are fixedly connected to the top ends of the first suspension arm and the second suspension arm respectively, and connecting holes are formed in the lower ends of the first suspension arm and the second suspension arm respectively. And the inner end of the connecting bolt is inserted into a bolt hole in the side wall of the jacking pipe joint. The first lifting arm and the second lifting arm can swing and rotate by 90 degrees, during working, the first lifting arm and the second lifting arm of the lifting appliance can be lowered and suspended to be perpendicular to the cross beam, the first lifting arm and the second lifting arm of the lifting appliance can be folded when not in use, the whole lifting appliance is linear, the occupied space of the lifting appliance in the idle state is effectively reduced, and the lifting appliance is convenient to store and transport.

Description

Technical Field

[0001] The utility model relates to a lifting tool, in particular to a rectangular pipe jacking pipe joint lifting tool. Background Technique

[0002] With the rapid development of urban rail transit, the construction methods of underground channels are increasing day by day. Among them, the pipe jacking construction technology is widely used in the construction of various underground channels. The pipe jacking construction technology does not require road excavation, traffic closure, and pipeline relocation, and has the advantages of low noise, no dust, and high civilized construction level, which better solves the problems of the impact on surrounding buildings and traffic congestion in the construction of urban underground projects.

[0003] The pipe jacking channel is composed of many segments (or pipe joints) connected in the construction of underground channels; before construction, the segments (or pipe joints) need to be hoisted and lowered into the underground construction shaft, and after the construction is completed, the segments (or pipe joints) need to be hoisted and raised out of the ground. The existing pipe jacking construction technology generally uses a rigid U-shaped lifting tool for pipe jacking hoisting. Due to its rigid structure, the rigid U-shaped lifting tool is not convenient for storage and transportation after use, which limits the flexibility of the pipe jacking construction technology. Content of the Utility Model

[0004] The utility model aims to solve the above technical problems, thereby providing a rectangular pipe jacking pipe joint lifting tool, which can effectively reduce the occupied space in the idle state of the lifting tool and is convenient for storage and transportation.

[0005] The technical scheme adopted by the utility model to solve its technical problems is as follows:

[0006] A rectangular pipe jacking pipe joint lifting tool, including a cross beam, and the two ends of the top of the cross beam are symmetrically and fixedly connected with a first ear plate and a second ear plate, and the first ear plate and the second ear plate are respectively connected with a suspension cable.

[0007] The bottom of the cross beam is symmetrically and fixedly connected with a first fixed hinge seat and a second fixed hinge seat. The first fixed hinge seat and the second fixed hinge seat are respectively hinged with a first movable hinge plate and a second movable hinge plate through a rotating shaft. The first movable hinge plate and the second movable hinge plate are respectively fixedly connected to the tops of a first lifting arm and a second lifting arm. Connecting holes are respectively opened at the lower ends of the first lifting arm and the second lifting arm, and a connecting pin penetrates through the connecting hole and the inner end is inserted into the pin hole on the side wall of the pipe jacking pipe joint.

[0008] Compared with the prior art, the beneficial effects of the utility model adopting the above technical scheme are as follows:

[0009] The first lifting arm and the second lifting arm can realize a 90° swinging movement. During work, when lowering and hanging, it is perpendicular to the cross beam and in a vertical state. When the first lifting arm and the second lifting arm of the lifting tool are idle, they can be folded, so that the whole lifting tool is in a straight line shape, which can effectively reduce the occupied space in the idle state of the lifting tool and is convenient for storage and transportation.

[0010] Furthermore, the optimized solution of the present utility model is as follows:

[0011] The cross beam is of a hollow steel pipe structure or an I-beam steel structure.

[0012] The first lifting arm and the second lifting arm are of a square pipe structure or a rectangular pipe structure.

[0013] The first fixed hinge seat and the second fixed hinge seat are respectively located outside the first ear plate and the second ear plate.

[0014] A sliding groove is formed in the side wall of the connection hole of the first lifting arm and the second lifting arm, and the limit pin passes through the sliding groove and is sleeved on the connection pin. The limit structure formed by the sliding groove and the limit pin prevents the connection pin from being disengaged and lost from the lifting arm when it is idle.

[0015] The first fixed hinge seat and the second fixed hinge seat are respectively provided with first positioning holes, the first movable hinge plate and the second movable hinge plate are respectively provided with second positioning holes, the first positioning holes and the second positioning holes are concentric, and when stored, the axes of the first positioning holes and the second positioning holes coincide and are penetrated by a stop pin. The first positioning holes, the second positioning holes and the stop pin constitute a stop structure, which can prevent the lifting arm from automatically loosening and opening when the lifting arm is stored idle and unused, and keep the storage state of the lifting tool compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic view of the hoisting state of the embodiment of the present utility model;

[0017] Figure 2 is Figure 1 View A of;

[0018] Figure 3 is Figure 2 Sectional view taken along line B-B of;

[0019] Figure 4 is a schematic view of the storage state of the embodiment of the present utility model;

[0020] Figure 5 is Figure 4 View C of.

[0021] In the figure: cross beam 1; first ear plate 2; second ear plate 3; sling 4; first fixed hinge seat 5; second fixed hinge seat 6; rotating shaft 7; first movable hinge plate 8; second movable hinge plate 9; first lifting arm 10; sliding groove 1001; second lifting arm 11; connection pin 12; limit pin 13; jacking pipe joint 15; pin hole 1501; hook 16. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0024] See Figure 1 , Figure 2 , this embodiment provides a rectangular pipe jacking pipe joint lifting tool, which is mainly composed of a cross beam 1, a first ear plate 2, a second ear plate 3, a sling 4, a first fixed hinge seat 5, a second fixed hinge seat 6, a rotating shaft 7, a first movable hinge plate 8, a second movable hinge plate 9, a first lifting arm 10 and a second lifting arm 11. The cross beam 1 is horizontally arranged, and it is a hollow steel pipe structure or an I-beam steel structure. At both ends of the top of the cross beam 1, the first ear plate 2 and the second ear plate 3 are symmetrically welded. The first ear plate 2 and the second ear plate 3 are respectively connected to two slings 4, and the lengths of the two slings 4 are opposite. The sling 4 is used to connect the hook 16 of the crane.

[0025] At the bottom of the cross beam 1, the first fixed hinge seat 5 and the second fixed hinge seat 6 are symmetrically welded. The first fixed hinge seat 5 and the second fixed hinge seat 6 are respectively located outside the first ear plate 2 and the second ear plate 3. The first fixed hinge seat 5 is hinged to the first movable hinge plate 8 through the rotating shaft 7, and the second fixed hinge seat 6 is hinged to the second movable hinge plate 9 through the rotating shaft 7. The first movable hinge plate 8 is welded to the top end of the first lifting arm 10, and the second movable hinge plate 9 is welded to the top end of the second lifting arm 11. The first lifting arm 10 and the second lifting arm 11 are square pipe structures or rectangular pipe structures.

[0026] Horizontal connection holes are respectively opened at the lower ends of the first lifting arm 10 and the second lifting arm 11, and a connection pin 12 is inserted through the connection holes. When hoisting the pipe jacking pipe joint 15, the inner end of the connection pin 12 is inserted into the pin hole 151 on the side wall of the pipe jacking pipe joint 15. When hoisting the pipe jacking pipe joint 15, by inserting the inner end of the connection pin 12 into the pin holes 1501 on both side walls of the pipe jacking pipe joint 15, the connection can be realized. After hoisting, the connection pin 12 can be directly withdrawn from the pin hole 1501 to separate the lifting tool from the pipe jacking pipe joint 15. Chute 1001 is opened on the wall plates on both sides of the connection holes of the first lifting arm 10 and the second lifting arm 11 ( Figure 3As shown, the axis of the chute 1001 is perpendicular to the axis of the connecting pin 12. The connecting pin 12 is provided with a radial round hole, and the limit pin 13 passes through the chute 1001 and is inserted into the round hole of the connecting pin 12. The limit structure formed by the chute 1001 and the limit pin 13 prevents the connecting pin 12 from being disengaged and lost from the boom when it is idle.

[0027] Under the action of the hinge structure, the first boom 10 and the second boom 11 can achieve a 90° swing movement. During operation, when lowered and suspended, it is perpendicular to the cross beam 1 and in a vertical state; when idle and stored, the first boom 10 and the second boom 11 swing upward to be parallel and attached to the bottom surface of the cross beam 1, which can effectively reduce the occupied space of the spreader in the idle state and facilitate storage and transportation. Figure 4 、 Figure 5 As shown, when the boom is idle and stored, in order to prevent the first boom 10 and the second boom 11 from automatically loosening and opening, the first fixed hinge seat 5 and the second fixed hinge seat 6 are respectively provided with first positioning holes 501, and the first movable hinge plate 8 and the second movable hinge plate 9 are respectively provided with second positioning holes 801. The first positioning hole 501 and the second positioning hole 801 are concentric. During storage, the axes of the first positioning hole 501 and the second positioning hole 801 coincide, and the stop pin 14 is inserted into the first positioning hole 501 and the second positioning hole 801. The first positioning hole 501, the second positioning hole 801 and the stop pin 15 form a stop structure. When the first boom 10 and the second boom 11 rotate to be parallel and attached to the cross beam 1, the first positioning hole 501 and the second positioning hole 801 are aligned, and the stop pin 14 can be passed through the first positioning hole 501 and the second positioning hole 801, thereby preventing the relative rotation of the fixed hinge seat and the movable hinge plate, that is, preventing the boom from automatically loosening and opening.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A rectangular pipe jacking pipe joint lifting tool, comprising a cross beam, with a first ear plate and a second ear plate symmetrically and fixedly connected to both ends of the top of the cross beam. The first ear plate and the second ear plate are respectively connected to sling ropes. It is characterized in that: On the bottom of the cross beam, a first fixed hinge seat and a second fixed hinge seat are symmetrically and fixedly connected. The first fixed hinge seat and the second fixed hinge seat are respectively hinged to a first movable hinge plate and a second movable hinge plate through a rotating shaft. The first movable hinge plate and the second movable hinge plate are respectively fixedly connected to the tops of a first lifting arm and a second lifting arm. Connecting holes are respectively opened at the lower ends of the first lifting arm and the second lifting arm. A connecting pin penetrates through the connecting hole and its inner end is inserted into the pin hole on the side wall of the pipe jacking pipe joint.

2. The rectangular pipe jacking pipe joint lifting device according to claim 1, characterized in that: The cross beam is of a hollow steel pipe structure or an I-beam steel structure.

3. The rectangular pipe-jacking pipe section sling according to claim 1, characterized in that: The first lifting arm and the second lifting arm are of a square pipe structure or a rectangular pipe structure.

4. The rectangular pipe-jacking pipe segment lifting tool according to claim 1, wherein: The first fixed hinge seat and the second fixed hinge seat are respectively located outside the first ear plate and the second ear plate.

5. The rectangular pipe jacking pipe joint lifting tool according to claim 1, wherein: Chute grooves are opened on the side walls of the connecting holes of the first lifting arm and the second lifting arm. A limit pin penetrates through the chute groove and is inserted on the connecting pin.

6. The rectangular pipe jacking pipe joint lifting device according to claim 1, characterized in that: The first fixed hinge seat and the second fixed hinge seat respectively open first positioning holes, and the first movable hinge plate and the second movable hinge plate respectively open second positioning holes. The first positioning hole and the second positioning hole are concentric. When stored, the axes of the first positioning hole and the second positioning hole coincide and a stop pin is inserted through them.

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