Air bag hoop type force transmission key

Abstract

The invention provides an air bag hoop type force transmission key. The air bag hoop type force transmission key comprises a first hoop, a second hoop, a supporting column and an air bag supporting assembly. The first hoop is connected with the second hoop, and a containing cavity is formed between the first hoop and the second hoop; one end of the supporting column is movably arranged in the containing cavity, and the other end of the supporting column penetrates out of the containing cavity and is used for abutting against an external first wall. The air bag supporting assembly is arranged in the containing cavity, one end of the air bag supporting assembly abuts against the supporting column, and the other end of the air bag supporting assembly is used for abutting against an external second wall. The air bag supporting assembly is inflated, expands and pushes the supporting column, so that the supporting column and the air bag supporting assembly abut against the first external wall body and the second external wall body respectively. The air bag hoop type force transmission key has the advantage of being high in bearing capacity, and therefore the potential safety hazard that a traditional adjustable supporting force transmission key loses efficacy due to reverse rotation under the large load effect is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, and in particular to an airbag clamp type force transmission key. Background Art

[0002] During the construction of the prefabricated station, after the supporting structure is removed, the force transfer key can effectively transfer the soil pressure borne by the ground-connected wall to the prefabricated components that have been assembled. The force transfer key currently used is a positive and negative threaded rod type force transfer key, which uses the telescopic adjustment and tightening function of its positive and negative threaded rod to directly transfer the soil pressure borne by the foundation pit retaining structure to the prefabricated components. However, the force transfer key has the following problems: First, the bearing capacity is poor, and there will be a safety hazard of reverse rotation failure under large loads, resulting in ineffective force transmission; second, workers are required to operate in a small space and use a jack, which is cumbersome to operate; third, the force transfer key only monitors the axial force of a limited number of force transfer keys, and there is a problem of incomplete axial force monitoring; fourth, the force transfer key adopts the installation method of rotating the positive and negative threaded rod, and the installation time is long, resulting in a long construction period.

[0003] Therefore, it is necessary to provide at least one airbag clamp type force transmission key with high load-bearing capacity and simple and convenient operation. Summary of the invention

[0004] The purpose of the present invention is to provide an airbag clamp type force transmission key with high load-bearing capacity and simple and convenient operation.

[0005] To achieve the above-mentioned purpose, the present invention provides an airbag clamp type force transmission key, comprising a first clamp, a second clamp, a support column and an airbag support assembly; the first clamp is connected to the second clamp, and a accommodating cavity is provided between the first clamp and the second clamp; one end of the support column is movably arranged in the accommodating cavity, and the other end of the support column passes through the accommodating cavity and is used to press against an external first wall; the airbag support assembly is arranged in the accommodating cavity, one end of the airbag support assembly abuts against the support column, and the other end of the airbag support assembly is used to press against an external second wall; the airbag support assembly is inflated and pushes the support column, so that the support column and the airbag support assembly are respectively pressed against the external first wall and the external second wall.

[0006] Preferably, the first clamp includes a first connecting portion, a first arc-shaped portion and a second connecting portion, the first connecting portion is connected to one side of the first arc-shaped portion, and the second connecting portion is connected to the other side of the first arc-shaped portion; the second clamp includes a third connecting portion, a second arc-shaped portion and a fourth connecting portion, the third connecting portion is connected to one side of the second arc-shaped portion, and the fourth connecting portion is connected to the other side of the second arc-shaped portion; the first connecting portion is connected to the third connecting portion, the second connecting portion is connected to the fourth connecting portion, and the first arc-shaped portion and the second arc-shaped portion surround the accommodating cavity.

[0007] Preferably, the first connecting portion and the third connecting portion are connected by a first bolt.

[0008] Preferably, the second connecting portion and the fourth connecting portion are connected via a second bolt.

[0009] Preferably, the airbag support assembly includes a pressure-bearing airbag and an airbag support member, the pressure-bearing airbag is arranged in the accommodating cavity, and one end of the pressure-bearing airbag abuts against the support column, and the other end of the pressure-bearing airbag is connected to the airbag support member, and the airbag support member is used to tighten the external second wall.

[0010] Preferably, the airbag support member has a groove sunken toward the interior of the accommodating cavity, and the pressure-bearing airbag is provided with an air pipe joint, which is penetrated by the airbag support member and inserted into the groove.

[0011] Preferably, the air pipe joint is connected to an external air supply pipeline, and the external air supply pipeline is used to supply air to the pressure airbag.

[0012] Preferably, the airbag support is provided with an opening or a groove for allowing the external air supply pipeline to pass through.

[0013] Preferably, there is a gap between the first clamp and the second clamp for the external air supply pipeline to pass through.

[0014] Preferably, the support column includes a support body portion and a position-limiting support portion, one end of the support body portion is disposed in the accommodating cavity, and the other end of the support body portion passes through the accommodating cavity and is connected to the position-limiting support portion.

[0015] Compared with the prior art, the bearing capacity of the airbag clamp type force transfer key of the present invention is composed of the static friction force of the first clamp and the second clamp and the supporting force of the airbag support assembly. Relevant studies have shown that the overall stiffness and bearing capacity of the clamp type structure are higher than those of the steel wedge type flexible end and the single-cylinder jack support flexible head. Therefore, the airbag clamp type force transfer key of the present invention has the characteristics of high bearing capacity, thereby avoiding the safety hazard of anti-rotation failure of traditional adjustable support force transfer keys under large loads; secondly, the airbag clamp type force transfer key of the present invention realizes the sliding extension of the support column and provides prestress through the inflation of the airbag support assembly, thereby adapting to the spacing between prefabricated components and foundation pit structures under different working conditions, while also avoiding workers operating in a small space and the use of jacks. Therefore, the airbag clamp type force transfer key of the present invention is easy and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the airbag clamp type force transmission key of the present invention.

[0017] Figure 2 It is a front view of the airbag clamp type force transmission key of the present invention after removing part of the structure of the first clamp.

[0018] Figure 3 It is a connection structure diagram of the first clamp and the second clamp of the airbag clamp type force transmission key of the present invention. DETAILED DESCRIPTION

[0019] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.

[0020] See also Figures 1 to 3 The airbag clamp type force transmission key 100 of the present invention includes a first clamp 1, a second clamp 2, a support column 3 and an airbag support assembly 4; the first clamp 1 is connected to the second clamp 2, and a receiving cavity 5 is provided between the first clamp 1 and the second clamp 2; one end of the support column 3 is movably arranged in the receiving cavity 5, and the other end of the support column 3 passes through the receiving cavity 5 and is used to press against the external first wall (not shown in the figure); the airbag support assembly 4 is arranged in the receiving cavity 5, one end of the airbag support assembly 4 is abutted against the support column 3, and the other end of the airbag support assembly 4 is used to press against the external second wall (not shown in the figure); the airbag support assembly 4 is inflated and pushes the support column 3, so that the support column 3 and the airbag support assembly 4 press against the external first wall and the external second wall respectively. The support column 3 and the airbag support assembly 4 are respectively pressed against the external first wall and the external second wall, so as to quickly and effectively support between the external first wall and the external second wall, so that the airbag clamp type force transmission key 100 of the present invention can effectively transfer the soil pressure borne by the ground-connected wall between the external first wall and the external second wall.

[0021] In one embodiment, one of the first external wall and the second external wall is a prefabricated component, and the other of the first external wall and the second external wall is a foundation pit structure, but the present invention is not limited thereto.

[0022] See also Figure 3 In one embodiment, the first clamp 1 includes a first connection portion 11, a first arc-shaped portion 12 and a second connection portion 13, the first connection portion 11 is connected to one side of the first arc-shaped portion 12, and the second connection portion 13 is connected to the other side of the first arc-shaped portion 12; the second clamp 2 includes a third connection portion 21, a second arc-shaped portion 22 and a fourth connection portion 23, the third connection portion 21 is connected to one side of the second arc-shaped portion 22, and the fourth connection portion 23 is connected to the other side of the second arc-shaped portion 22; the first connection portion 11 is connected to the third connection portion 21, the second connection portion 13 is connected to the fourth connection portion 23, and the first arc-shaped portion 12 and the second arc-shaped portion 22 are surrounded by a receiving cavity 5. Specifically, the first connection portion 11 and the third connection portion 21 are connected by a first bolt 6; the second connection portion 13 and the fourth connection portion 23 are connected by a second bolt 7. The first clamp 1 and the second clamp 2 are connected together by using the first bolt 6 and the second bolt 7 , so the tightness of the connection between the first clamp 1 and the second clamp 2 can be adjusted by adjusting the first bolt 6 and the second bolt 7 .

[0023] See also Figure 1 and Figure 2 In one embodiment, the airbag support assembly 4 includes a pressure-bearing airbag 41 and an airbag support member 42. The pressure-bearing airbag 41 is disposed in the accommodating cavity 5, and one end of the pressure-bearing airbag 41 abuts against the support column 3, and the other end of the pressure-bearing airbag 41 is connected to the airbag support member 42. The airbag support member 42 is used to press against the external second wall. Further, the airbag support member 42 has a groove 421 that is recessed toward the inside of the accommodating cavity 5. The pressure-bearing airbag 41 is provided with an air pipe joint 411, which is passed through the airbag support member 42 and inserted into the groove 421. By providing a groove 421 sunken toward the inside of the accommodating cavity 5 on the airbag support 42, the air pipe connector 411 of the pressure-bearing airbag 41 is accommodated through the groove 421, and at the same time, the air pipe connector 411 is prevented from being pressed against the external second wall when the airbag support 42 is pressed against the external second wall, thereby ensuring that the pressure-bearing airbag 41 is effectively supplied with air through the air pipe connector 411. Furthermore, the air pipe connector 411 is connected to an external air supply pipeline (not shown in the figure), and the external air supply pipeline is used to supply air to the pressure-bearing airbag 41.

[0024] In one embodiment, the airbag support 42 is provided with an opening (not shown) or a slot (not shown) for the external air supply pipeline to pass through. The external air supply pipeline can pass through the opening or slot on the airbag support 42 to the position corresponding to the groove 421 of the airbag support 42, so that the external air supply pipeline is connected to the air pipe connector 411 of the pressure airbag 41.

[0025] In one embodiment, there is a gap 8 between the first clamp 1 and the second clamp 2 for the external air supply pipeline to pass through. After one end of the external air supply pipeline is connected to the air pipe connector 411 of the pressure airbag 41, the other end of the external air supply pipeline can first pass through the opening or slot on the airbag support 42, and then pass through the gap 8 between the first clamp 1 and the second clamp 2, so as to be connected to the external air source device (not shown in the figure).

[0026] See also Figure 2 In one embodiment, the support column 3 includes a support body portion 31 and a position-limiting support portion 32, one end of the support body portion 31 is disposed in the accommodating cavity 5, and the other end of the support body portion 31 passes through the accommodating cavity 5 and is connected to the position-limiting support portion 32. The diameter of the position-limiting support portion 32 is larger than that of the support body portion 31, so the position-limiting support portion 32 can be used to prevent the entire support column 3 from falling into the accommodating cavity 5, and at the same time, the position-limiting support portion 32 can be used to press against the external second wall.

[0027] Combination Figures 1 to 3 The specific working principle of the airbag clamp type force transmission key 100 of the present invention is as follows:

[0028] Before installation, install the pressure-bearing airbag 41 of the airbag support assembly 4 in the accommodating cavity 5 between the first clamp 1 and the second clamp 2, then install most of the support column 3 in the accommodating cavity 5, leaving a small part of the support column 3 exposed, and then connect the first connecting part 11 of the first clamp 1 and the third connecting part 21 of the second clamp 2 together through the first bolt 6, and connect the second connecting part 13 of the second clamp 2 and the fourth connecting part 23 of the second clamp 2 together through the second bolt 7, but keep the first bolt 6 and the second bolt 7 slightly loose, so that the first clamp 1 and the second clamp 2 are not completely locked.

[0029] When installing the airbag clamp type force transmission key 100, use high-precision measuring equipment to accurately locate the installation position of the airbag clamp type force transmission key 100 to ensure its accurate docking with the foundation pit structure. The pressure-bearing airbag 41 of the airbag support assembly 4 is inflated and pressurized to expand the pressure-bearing airbag 41 until the support column 3 and the airbag support member 42 of the airbag support assembly 4 simultaneously press against the external first wall (such as a prefabricated side wall) and the external second wall (such as a ground-connected wall) to provide a certain prestress. Finally, tighten the first bolt 6 and the second bolt 7, and hold the support tightly through the first clamp 1 and the second clamp 2, and finally realize the transmission of force.

[0030] During the later monitoring and maintenance, install air pressure monitoring equipment to monitor the stress state of the airbag clamp type force transmission key 100 in real time to ensure safety during the construction process. Establish a construction quality monitoring system to monitor and evaluate the installation quality of the airbag clamp type force transmission key 100 in real time. Formulate a later maintenance plan for the airbag clamp type force transmission key 100, including regular inspection, cleaning and necessary maintenance work.

[0031] In summary, the load-bearing capacity of the airbag clamp type force transfer key 100 of the present invention is composed of the static friction force of the first clamp 1 and the second clamp 2 and the support force of the airbag support assembly 4. Relevant studies have shown that the overall stiffness and load-bearing capacity of the clamp type structure are higher than those of the steel wedge type flexible end and the single-cylinder jack support flexible head. Therefore, the airbag clamp type force transfer key 100 of the present invention has the characteristics of high load-bearing capacity, thereby avoiding the safety hazard of the traditional adjustable support force transfer key failing in reverse rotation under large loads. Secondly, the airbag clamp type force transfer key 100 of the present invention realizes the sliding extension of the support column 3 and provides prestress through the inflation of the airbag support assembly 4, so that it can adapt to the spacing between the prefabricated components and the foundation pit structure under different working conditions, and also avoids workers operating in a small space and the use of jacks. Therefore, the airbag clamp type force transfer key 100 of the present invention is easy and convenient to operate. In addition, the airbag clamp type force transmission key 100 of the present invention has the characteristics of comprehensive and convenient axial force monitoring. The pressure-bearing airbag 41 of the airbag support assembly 4 can provide an air pressure monitoring function, which can timely grasp the axial force loss of the force transmission key or the internal force of the foundation pit, thereby avoiding the situation that the traditional force transmission key only monitors the axial force of a limited number of force transmission keys; by installing an air pressure monitoring device under the pressure-bearing airbag 41, the monitoring function can start comprehensive real-time axial force monitoring in the shortest time. Furthermore, the airbag clamp type force transmission key 100 of the present invention can quickly expand the pressure-bearing airbag 41 of the airbag support assembly 4 through a simple inflation operation by setting the airbag support assembly 4. Compared with the traditional installation method of rotating the forward and reverse screw rods of the force transmission key, the time required for the installation of the force transmission key is greatly shortened, the force transmission of the force transmission key is realized more quickly, and the construction period is saved.

[0032] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. An airbag clamp type force transmission key, characterized in that: It includes a first clamp, a second clamp, a support column and an airbag support assembly; the first clamp is connected to the second clamp, and a accommodating cavity is provided between the first clamp and the second clamp; one end of the support column is movably arranged in the accommodating cavity, and the other end of the support column passes through the accommodating cavity and is used to press against the external first wall; the airbag support assembly is arranged in the accommodating cavity, one end of the airbag support assembly abuts against the support column, and the other end of the airbag support assembly is used to press against the external second wall; the airbag support assembly is inflated and pushes the support column, so that the support column and the airbag support assembly press against the external first wall and the external second wall respectively.

2. The airbag clamp type force transmission key according to claim 1 is characterized in that: The first hoop comprises a first connecting portion, a first arc-shaped portion and a second connecting portion, wherein the first connecting portion is connected to one side of the first arc-shaped portion, and the second connecting portion is connected to the other side of the first arc-shaped portion; The second clamp includes a third connecting portion, a second arc-shaped portion and a fourth connecting portion, the third connecting portion is connected to one side of the second arc-shaped portion, and the fourth connecting portion is connected to the other side of the second arc-shaped portion; the first connecting portion is connected to the third connecting portion, the second connecting portion is connected to the fourth connecting portion, and the first arc-shaped portion and the second arc-shaped portion surround the accommodating cavity.

3. The airbag clamp type force transmission key according to claim 2 is characterized in that: The first connection part and the third connection part are connected by a first bolt.

4. The airbag clamp type force transmission key according to claim 2, characterized in that: The second connection portion and the fourth connection portion are connected via a second bolt.

5. The airbag clamp type force transmission key according to claim 1, characterized in that: The airbag support assembly includes a pressure-bearing airbag and an airbag support member. The pressure-bearing airbag is arranged in the accommodating cavity, and one end of the pressure-bearing airbag abuts against the support column, and the other end of the pressure-bearing airbag is connected to the airbag support member. The airbag support member is used to press the external second wall tightly.

6. The airbag clamp type force transmission key according to claim 5, characterized in that: The airbag support member has a groove sunken toward the interior of the accommodating cavity, and the pressure-bearing airbag is provided with an air pipe joint, which is penetrated by the airbag support member and inserted into the groove.

7. The airbag clamp type force transmission key according to claim 6, characterized in that: The air pipe joint is connected to an external air supply pipeline, and the external air supply pipeline is used to supply air to the pressure airbag.

8. The airbag clamp type force transmission key according to claim 7, characterized in that: The airbag support is provided with an opening or a groove for the external air supply pipeline to pass through.

9. The airbag clamp type force transmission key according to claim 7, characterized in that: A gap is provided between the first clamp and the second clamp for the external air supply pipeline to pass through.

10. The airbag clamp type force transmission key according to claim 1, characterized in that: The support column includes a support body portion and a position-limiting support portion. One end of the support body portion is disposed in the accommodating cavity, and the other end of the support body portion passes through the accommodating cavity and is connected to the position-limiting support portion.

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