Rapid force unloading device for steel support

Abstract

The utility model belongs to the technical field of foundation pit supporting equipment, and particularly discloses a steel support rapid force unloading device which comprises a first sliding block and a second sliding block, one side of the first sliding block and one side of the second sliding block are each provided with an inclined face, and the inclined faces of the first sliding block and the second sliding block make contact with each other. The first sliding block and the second sliding block are detachably connected; the first sliding block or the second sliding block is provided with a jacking and loosening hole, and after a jacking and loosening rod is inserted into the jacking and loosening hole, the first sliding block or the second sliding block can be jacked open. The device can overcome the defects that in the traditional steel support dismantling process, used equipment is complex, the weight is huge, and the operation process is not safe enough.

Description

Technical Field

[0001] This utility model relates to the technical field of foundation pit support equipment, specifically to a steel support rapid stress relief device. Background Technology

[0002] Subway construction is mostly carried out underground, with deep foundation pits. To balance the lateral pressure of the foundation pit and ensure construction safety, multiple support systems need to be set up inside the pit. In most cases, steel supports are used as supports. During the erection of steel supports, hydraulic pump stations and oil cylinders are generally used to apply prestress to the steel supports step by step, so that one side of the steel support supports the side wall of the foundation pit. Then, steel wedges are inserted on the other side of the steel support, and then the jacks are removed, so that both ends of the steel support effectively support the side wall of the foundation pit.

[0003] However, after the structural construction at the corresponding height of the station is completed, the steel supports need to be removed. During the removal of the steel supports, a hydraulic pump station and oil cylinder are used to apply greater pressure so that the jacks can compress the steel supports first, making it easier to remove the steel wedges. Then, the pressure is released by the oil cylinders to remove the steel supports.

[0004] Currently, the dismantling process for steel supports is the reverse of the erection sequence. It requires using large-tonnage jacks to compress the steel supports before removing the steel wedges, then retracting the jacks to lift and dismantle the steel supports. However, the existing method of dismantling steel supports has the following drawbacks:

[0005] First, the demolition process requires the use of jacks, which are quite heavy and inconvenient for personnel to operate while standing on the narrow steel walers. Furthermore, a hydraulic pump station needs to be set up on the ground, requiring the laying of hydraulic oil pipes, resulting in complex equipment and wiring.

[0006] Second, when unloading, sufficient pressure needs to be applied to compress the steel support, so that a gap appears between the steel wedge and the steel support, making it easier to remove the steel wedge. However, the steel support is under the greatest stress at this time, and excessive pressure may damage the steel support. At the same time, excessive pressure may cause the jack to slip, break off, or fall, posing a safety risk. Utility Model Content

[0007] This utility model provides a rapid stress relief device for steel supports, which aims to solve the shortcomings of traditional steel support dismantling processes, such as complex equipment, huge weight, and insufficient safety.

[0008] This utility model is achieved through the following technical solution: a steel support quick unloading device, including a first slider and a second slider, both the first slider and the second slider have an inclined surface on one side, the inclined surfaces of the first slider and the second slider are in contact with each other, the first slider and the second slider are detachably connected; a top loosening hole is opened on the first slider or the second slider, and a top loosening rod is inserted into the top loosening hole to open the first slider or the second slider.

[0009] Compared with existing technologies, this solution has the following advantages and beneficial effects:

[0010] In this design, both the first and second sliders are provided with inclined surfaces. When the inclined surfaces of the first and second sliders come into contact with each other, they are detachably connected, so that the first and second sliders overlap to form a whole. This makes it easy to install between the steel support and the waler of the pit sidewall, and to bear the pressure together with the steel support.

[0011] When the steel support needs to be removed, the connection between the first and second sliders is loosened, allowing them to slide along the inclined plane. This shortens the width between the first and second sliders, thus unloading the steel support. If the first and second sliders cannot slide along the inclined plane after loosening the connection, a jacking rod can be inserted into the jacking hole on the first or second slider to loosen it, causing them to slide relative to each other along the inclined plane and unloading the steel support. This makes it easy to remove the steel support without needing to use a jack again, simplifying the operation and overcoming the disadvantages of traditional steel support removal, such as the use of multiple pieces of equipment, complex operation, and high operational risks. The removal process only requires a single tool (such as a wrench to control the jacking rod to lift the first or second slider), reducing equipment investment and making the operation safer.

[0012] Furthermore, the inclined surface of the first slider is provided with a first step, and the inclined surface of the second slider is provided with a second step, and the inclined surfaces of the first slider and the second slider are interlocked with each other through the first step and the second step.

[0013] Beneficial effects: In this solution, a first step and a second step are respectively set on the inclined surfaces of the first slider and the second slider. When the inclined surfaces of the first slider and the second slider come into contact with each other, the first slider and the second slider can be engaged based on the first step and the second step. This can improve the stability of the cooperation between the first slider and the second slider, and the first step and the second step can play a mutual limiting role, making it easier to connect the first slider and the second slider.

[0014] Furthermore, the loosening hole is located on the first slider, and the two ends of the loosening hole extend through the top of the first slider and the first step, respectively.

[0015] Beneficial effects: In this design, the jacking hole is aligned with the first step. When the first and second sliders are engaged, and it is necessary to allow them to slide along the inclined surface to relieve stress on the steel support, a jacking rod is inserted into the jacking hole. The bottom end of the jacking rod pushes against the second step on the second slider, facilitating relative sliding between the first and second sliders and thus relieving stress on the steel support. Compared to directly contacting the inclined surface on the second slider, the jacking rod in this design contacts the plane of the second step when pushing the second slider. This makes the jacking rod easier to operate and less prone to slippage, resulting in a better and easier pushing effect between the second and first sliders.

[0016] Furthermore, the first slider and the second slider, when interlocked, form a rectangular structure.

[0017] Beneficial effects: With this configuration, the rectangular structure formed between the first and second sliders in this solution is easy to install between the steel support structure and the waler in the foundation pit. Moreover, this structure provides a larger contact surface between the steel support structures, resulting in better support and cooperation with the steel supports.

[0018] Furthermore, the first step and the second step are located in the middle of the inclined surfaces of the first slider and the second slider, respectively.

[0019] Beneficial effects: This design allows the first and second steps to be centered, making the whole structure formed by the first and second sliders more symmetrical, stronger in terms of force, and easier to loosen the first and second sliders later by using the jacking rod to move the steps.

[0020] Furthermore, both the first slider and the second slider have through holes that are directly opposite each other, and the first slider and the second slider are detachably connected by fasteners passing through the through holes.

[0021] Beneficial effects: In this solution, the first slider and the second slider are connected by a through hole and fasteners inserted into the through hole for detachable connection. This makes it easy to connect and fix the first slider and the second slider into a whole, which together with the steel support plays a supporting role. At the same time, it is easy to loosen the first slider and the second slider when disassembling the steel support, thereby relieving the force on the steel support and making it easier to remove the steel support smoothly.

[0022] Furthermore, the through holes on the first slider and the second slider are respectively arranged in directions perpendicular to the first step and the second step.

[0023] Beneficial effects: With this setup, operators can stand above the pit and insert fasteners into the through holes of the first and second sliders vertically for fixation, making operation more convenient.

[0024] Furthermore, the through hole on the first slider is a first locking through hole, and the through hole on the second slider is a second locking through hole. There are two of each of the first and second locking through holes, and the two first locking through holes and the two second locking through holes are located on both sides of the first slider and the second slider, respectively.

[0025] Beneficial effects: In this design, there are two first locking through holes and two second locking through holes, located on both sides of the first and second sliders respectively. This makes the connection between the first and second sliders more stable and reliable in the later stages, and makes the force on the connection between the first and second sliders more uniform.

[0026] Furthermore, the loosening hole is located between the two first locking through holes, and the loosening hole is centrally located.

[0027] Beneficial effect: This setting allows for a more centered force when releasing the slider, thus facilitating a faster release of the slider.

[0028] Furthermore, the loosening hole is an internally threaded hole.

[0029] Beneficial effects: In this design, an internal threaded hole is provided inside the loosening hole, which makes it easier to select a screw as the loosening rod. By turning the screw, the slider is gradually opened. This method is more convenient to operate and allows for better force application when moving the slider, thus facilitating the smooth loosening of the slider. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is a schematic diagram of the disassembled structure of the first and second sliders in an embodiment of a steel support rapid force unloading device of this utility model;

[0032] Figure 2 This is a structural schematic diagram of the first and second sliders from another perspective after disassembly, according to an embodiment of the steel support rapid unloading device of this utility model.

[0033] Figure 3 This is a side view of an embodiment of a steel support rapid force unloading device according to the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the steel support and waler in an embodiment of the quick stress relief device for steel support of this utility model.

[0035] The attached diagram shows the markings and corresponding component names:

[0036] First slider 1, first locking through hole 101, top loosening hole 102, first step 103, second slider 2, second locking through hole 201, second step 202, steel support 3, waler 4. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0038] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides a quick force relief device for a steel support 3, including a first slider 1 and a second slider 2. One side of both the first slider 1 and the second slider 2 is provided with an inclined surface, and the inclined surfaces of the first slider 1 and the second slider 2 are in contact with each other.

[0039] In this embodiment, the inclined surface of the first slider 1 is provided with a first step 103, and the inclined surface of the second slider 2 is provided with a second step 202. The inclined surfaces of the first slider 1 and the second slider 2 are interlocked by the first step 103 and the second step 202, and the first slider 1 and the second slider 2 are interlocked as a whole to form a rectangular structure.

[0040] In this embodiment, the first step 103 on the first slider 1 and the second step 202 on the second slider 2 divide the inclined surfaces of the first slider 1 and the second slider 2 into two inclined surfaces, and a step structure is formed between these two inclined surfaces. In this embodiment, the first step 103 and the second step 202 are located in the middle of the inclined surfaces of the first slider 1 and the second slider 2, respectively.

[0041] The first slider 1 and the second slider 2 are detachably connected. The first slider 1 or the second slider 2 is provided with a top loosening hole 102. After a top loosening rod is inserted into the top loosening hole 102, the first slider 1 or the second slider 2 can be opened. In this embodiment, the top loosening hole 102 is located on the first slider 1 as an example. The two ends of the top loosening hole 102 pass through the top end of the first slider 1 and the first step 103, respectively. The top loosening hole 102 is set on the first slider 1, which makes it convenient to insert the top loosening rod into the top loosening hole 102 from the top of the pit, making the operation more convenient.

[0042] In this embodiment, both the first slider 1 and the second slider 2 have through holes that face each other. The first slider 1 and the second slider 2 are detachably connected by fasteners passing through the through holes. The through holes on the first slider 1 and the second slider 2 are respectively arranged in a direction perpendicular to the first step 103 and the second step 202. Specifically, in this embodiment, the through hole on the first slider 1 is a first locking through hole 101, and the through hole on the second slider 2 is a second locking through hole 201. There are two of each of the first locking through holes 101 and the second locking through holes 201, which are located on both sides of the first slider 1 and the second slider 2, respectively.

[0043] In this embodiment, the fastener includes two through-bolts and a nut. The two through-bolts pass through the two first locking through holes 101 on the first slider 1 and the two second locking through holes 201 on the second slider 2 in sequence. Then, the nut is screwed into the screw to fix it, thereby locking the first slider 1 and the second slider 2 together to form a rectangular structure, which is convenient to bear the pressure together with the steel support 3.

[0044] The loosening hole 102 is located between the two first locking through holes 101, and the loosening hole is centrally located. In one embodiment, the loosening hole 102 is a through hole structure with no threads on its inner wall. The loosening rod is inserted into the loosening hole 102. By applying downward pressure, the two sliders are loosened, causing the two sliders to slide relative to each other along the inclined plane, thereby changing the width between the two sliders and thus relieving the force on the steel support 3. In another embodiment, the loosening hole 102 is an internally threaded hole. In this embodiment, the loosening rod is a screw. By screwing the loosening rod into the loosening hole 102, the loosening rod gradually passes through the loosening hole 102 and pushes open the slider, thereby causing the first slider 1 and the second slider 2 to slide relative to each other up and down along the inclined plane.

[0045] The specific implementation process is as follows:

[0046] Combination Figure 4 As shown, after the double I-beam steel waler 4 is installed and fixed inside the foundation pit, a hanging plate is usually connected to the waler 4. In this embodiment, the first slider 1 is fixed to the hanging plate of the waler 4. The first slider 1 and the second slider 2 in this embodiment are interlocked, and then screws are inserted into the first locking through hole 101 and the second locking through hole 201, and tightened with nuts, thereby connecting and fixing the first slider 1 and the second slider 2 to form a rectangular integral structure.

[0047] In this embodiment, when the steel support 3 is supported by a jack on the inside of the foundation pit and abuts against the second slider 2, the whole formed by the first slider 1 and the second slider 2, together with the steel support 3, bears the pressure and supports the foundation pit. When it is necessary to remove the steel support 3, the continuous screw on the first slider 1 and the second slider 2 is loosened, causing the first slider 1 and the second slider 2 to slide up and down relative to each other along the inclined plane, thereby shortening the width formed between the first slider 1 and the second slider 2, which at this time relieves the force on the steel support 3.

[0048] If the first slider 1 and the second slider 2 cannot slide along the inclined plane after the continuous screw is loosened, then the screw can be screwed into the middle loosening hole 102 to open the first slider 1 and the second slider 2, so that the first slider 1 and the second slider 2 slide relative to each other along the inclined plane, thereby relieving the force on the steel support 3, so that the steel support 3 can be quickly removed.

[0049] This device does not require additional pressure. During the process of unloading the steel support 3, there is no need to use a jack to increase the pressure and compress the steel support 3. After removing the steel wedge, the steel support 3 is disassembled. In this embodiment, the length is shortened by the principle of relative sliding of the inclined plane to achieve the purpose of unloading, thereby effectively reducing the risk of crushing the steel support 3.

[0050] This embodiment addresses the drawbacks of traditional steel support 3 removal methods, such as the use of numerous equipment, complex operation, and high operational risks. The removal of the steel support 3 does not require complex hydraulic equipment; a simple wrench is sufficient to release the force, making the operation convenient, safe, and reducing equipment investment, thus ensuring a safer work process.

[0051] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0052] In the description of this utility model, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0053] In the description of this document, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0054] In the description of this document, some terms may be used to indicate not only orientation or positional relationship, but also other meanings. For example, the term "above" may also be used in some cases to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0055] In the description of this document, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] The structures, proportions, sizes, etc., drawn in the accompanying drawings in this application are only used to complement the content disclosed in this technical disclosure for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modification of the structure, change of the proportion relationship, or adjustment of the size shall still fall within the scope of the technical content disclosed in this application, provided that it does not affect the effect and purpose that this application can produce.

[0057] The terminology used in this document is that which is currently widely used in the art in consideration of the functionality of this disclosure; however, these terms may vary depending on the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this disclosure. Therefore, the terminology used in this document should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this disclosure.

[0058] This document uses flowcharts or text to illustrate the operational steps performed according to embodiments of this application. It should be understood that the operational steps in the embodiments of this application are not necessarily performed precisely in the order described. Instead, as needed, various steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more operations can be removed from these processes.

[0059] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rapid stress relief device for steel supports, characterized in that, It includes a first slider and a second slider, both of which have a bevel on one side. The bevels of the first slider and the second slider are in contact with each other and are detachably connected. A loosening hole is provided on the first slider or the second slider, and a loosening rod can be inserted into the loosening hole to open the first slider or the second slider.

2. The steel support rapid stress relief device according to claim 1, characterized in that, The inclined surface of the first slider is provided with a first step, and the inclined surface of the second slider is provided with a second step. The inclined surfaces of the first slider and the second slider are interlocked by the first step and the second step.

3. The steel support rapid stress relief device according to claim 2, characterized in that, The top loosening hole is located on the first slider, and the two ends of the top loosening hole extend through the top of the first slider and the first step, respectively.

4. A steel support rapid stress relief device according to claim 2, characterized in that, The first slider and the second slider are interlocked to form a rectangular structure.

5. A steel support rapid stress relief device according to claim 2, characterized in that, The first step and the second step are located in the middle of the inclined surfaces of the first slider and the second slider, respectively.

6. A steel support rapid stress relief device according to claim 2, characterized in that, Both the first slider and the second slider have through holes that are directly opposite each other, and the first slider and the second slider are detachably connected by fasteners passing through the through holes.

7. A rapid stress-relieving device for steel supports according to claim 6, characterized in that, The through holes on the first slider and the second slider are respectively arranged in directions perpendicular to the first step and the second step.

8. A rapid stress relief device for steel supports according to claim 7, characterized in that, The through hole on the first slider is a first locking through hole, and the through hole on the second slider is a second locking through hole. There are two of each of the first and second locking through holes, and the two first locking through holes and the two second locking through holes are located on both sides of the first slider and the second slider, respectively.

9. A rapid stress relief device for steel supports according to claim 8, characterized in that, The loosening hole is located between the two first locking through holes, and the loosening hole is centrally located.

10. A rapid stress-relieving device for steel supports according to any one of claims 1-9, characterized in that, The loosening hole is an internally threaded hole.

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