Temporary fixing device for open cut foundation pit concrete support

Abstract

The utility model relates to a temporary fixing device for an open cut foundation pit concrete support, which is supported at the bottom end part of a to-be-cut section of the concrete support and comprises a main supporting rod, a supporting rod is inserted into the top end part of the main supporting rod in a sliding manner, and the supporting rod is suitable for adjusting the mounting height of the supporting rod; a bottom support is mounted at the bottom end part and is suitable for supporting the main supporting rod; and the moving frame is mounted at the lower part of the main supporting rod, comprises a plurality of supporting legs and is suitable for stably moving the main supporting rod. The supporting rod assembly of the temporary fixing device is supported at the bottom end of the to-be-cut part of the concrete support, then the concrete support is cut, the cut part is located on the supporting rod assembly, the concrete support is moved out of a foundation pit through hoisting, large machines are not needed, space is saved, and time and labor are saved; the height of the supporting rod assembly is adjustable, the supporting rod assembly can be applied to concrete supporting of different heights, the application range is wide, and the material cost is saved; the supporting rod assembly further comprises a moving frame, manual moving is not needed, convenience and rapidness are achieved, and efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundation pits, relates to a concrete support for a foundation pit, and in particular to a temporary fixing device for concrete support of an open excavation foundation pit. Background Art

[0002] In the construction of deeper foundation pits, in order to ensure the stability and safety of the foundation pit, a support system is usually set up in the foundation pit for support, wherein a number of concrete supports are set at intervals at the top of the foundation pit, and a number of steel supports are set at intervals under the concrete to support the two side walls of the foundation pit.

[0003] After the main structure in the foundation pit is constructed, the steel support and concrete support need to be removed. The traditional method of removing the concrete support is to cut it into several sections and lift it out, which has the following problems:

[0004] 1. When cutting concrete supports, a large hoisting device can be used to first hoist the area to be cut, and then a rope saw can be used for cutting. The cut section of concrete support is removed by a crane. This method requires the use of large machinery, occupies a large space, is inconvenient to use, and has high costs;

[0005] 2. When cutting the concrete support, a full-height bracket can be set up under the concrete support to temporarily support the cut concrete support, and then hoisted and removed together after the cutting is completed. Setting up a full-height bracket is time-consuming and labor-intensive, with complicated procedures, slowing down the construction progress and low efficiency.

[0006] 3. When cutting the concrete support, a temporary support device can also be fixed and installed under the concrete support. However, in order to facilitate drainage, the base of the foundation pit is usually set with a certain slope, so that the distances between the concrete supports and the base at different positions are different. The height of the temporary support is fixed, and a variety of temporary supports of different heights need to be customized, which wastes material costs; and the temporary support is inconvenient to move and needs to be carried manually, which is time-consuming and labor-intensive and inconvenient to use.

[0007] Therefore, we propose a temporary fixing device for concrete support of open excavation pit to solve the above problems. Utility Model Content

[0008] The utility model aims to overcome the shortcomings of the prior art and provide a temporary fixing device for supporting concrete in an open excavation foundation pit which is easy to move and has a simple structure.

[0009] To solve the above problems, the technical solution of the utility model is:

[0010] A temporary fixing device for concrete support of an open excavation foundation pit, the temporary fixing device is supported on the bottom end of a section of the concrete support to be cut, comprising:

[0011] The main support rod has a top end that is slidably inserted into a supporting rod, which is suitable for adjusting the installation height of the supporting rod; and a bottom end that is installed with a bottom bracket, which is suitable for supporting the main support rod;

[0012] The mobile frame is installed at the lower part of the main support rod and includes a plurality of legs, which are suitable for stably moving the main support rod.

[0013] In a further embodiment, a top end portion of the main support rod is provided with a thread, an adjustment groove is provided at the thread, and a limit piece is provided at the adjustment groove, which is suitable for installing the supporting rod.

[0014] In a further embodiment, the base includes a connecting portion and a bottom plate, the connecting portion is fixedly mounted on the bottom plate, and the upper end portion of the connecting portion is located inside the main support rod.

[0015] In a further embodiment, the connecting portion is provided with threads, and a limiting member is provided at the threads, which is suitable for adjusting the extension length of the connecting portion.

[0016] In a further embodiment, a plurality of adjustment holes are formed at intervals on the supporting rod, and the adjustment holes cooperate with the adjustment grooves to pass through the latch, and the two ends of the latch overlap the limiter, which is suitable for adjusting the installation height of the supporting rod.

[0017] In a further embodiment, a top bracket is threadedly mounted on the top end of the supporting rod, and the top bracket is used to support the concrete support.

[0018] In a further embodiment, the mobile frame further comprises a hoop, which is sleeved on the main support rod, and a plurality of legs are hingedly mounted on the hoop at intervals.

[0019] In a further embodiment, the pulley is threadedly mounted on the bottom end of the leg.

[0020] In a further embodiment, the main support rod is a hollow cylindrical structure.

[0021] In a further embodiment, the limiting member is a nut.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1. The support rod assembly of the temporary fixing device is supported on the bottom end of the part to be cut of the concrete support, and then the concrete support is cut. The cut part is located on the support rod assembly and is moved out of the foundation pit by hoisting. There is no need to use large machinery, which saves space, time and effort. The height of the support rod assembly is adjustable and can be applied to concrete supports of different heights. It has a wide range of applications and saves material costs. The support rod assembly also includes a mobile frame, which does not require manual movement, is convenient and efficient.

[0024] 2. The top of the main support rod of the temporary fixing device is provided with a thread, and a symmetrical adjustment groove is provided at the thread, and a limit piece is arranged at the adjustment groove; the top of the main support rod is passed through a supporting rod, and a number of adjustment holes are provided at intervals on the supporting rod, and the adjustment holes correspond to the adjustment grooves. A latch is used to pass through the adjustment groove and the adjustment hole in sequence, and the two ends of the latch are overlapped on the limit piece, and the latch is driven up and down by the limit piece to adjust the installation height of the supporting rod; the adjustment hole is used to roughly adjust the height, and the adjustment groove is used to finely adjust the height. The two cooperate with each other to achieve height adjustment without dead angles, and are suitable for concrete supports of various heights.

[0025] 3. A base support is installed at the bottom end of the main support rod of the temporary fixing device. The base support includes a connecting part and a bottom plate. The connecting part is fixedly installed on the bottom plate. Part of the connecting part is located inside the main support rod, which is suitable for supporting the main support rod and improving the stability of the main support rod. The connecting part is formed with threads and is threadedly connected to a limit piece, which is suitable for adjusting the protruding length of the connecting part and extending the height adjustment range of the main support rod.

[0026] 4. This temporary fixing device installs a mobile frame at the lower part of the main support rod. The mobile frame includes a clamp and a plurality of legs. The clamp is mounted on the main support rod. The plurality of legs are hinged circumferentially on the clamp. Pulleys are threadedly installed on the bottom ends of the legs, which can smoothly move the main support rod. After use, the legs can be folded inwards and pressed against the main support rod to save space and facilitate storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a temporary fixing device for supporting concrete in an open excavation pit;

[0028] Figure 2 A schematic diagram of a main support rod of a temporary fixing device for supporting concrete in an open excavation foundation pit;

[0029] Figure 3 The present invention is a schematic diagram of a support rod of a temporary fixing device used for supporting concrete in an open excavation pit.

[0030] In the figure: 1, concrete support; 2, support rod assembly; 21, supporting rod; 211, adjustment hole; 212, top support; 22, main support rod; 221, adjustment slot; 222, limiter; 223, bottom support; 2231, connecting part; 2232, bottom plate; 23, movable frame; 231, clamp; 232, support leg. DETAILED DESCRIPTION

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0032] Embodiment 1:

[0033] A temporary fixing device for concrete support in open excavation pits, such as Figures 1 to 3 As shown, it includes a support rod assembly 2, which is supported under the part to be cut of the concrete support 1, and is temporarily supported after the cutting is completed, and then hoisted and moved out of the foundation pit; the support rod assembly 2 includes a supporting rod 21, a main supporting rod 22 and a moving frame 23, the top end of the main supporting rod 22 is inserted with the supporting rod 21, the supporting rod 21 is used to support the concrete support 1, and the lower end of the main supporting rod 22 is covered with the moving frame 23, and the main supporting rod 22 can be moved to a specified position through the moving frame 23. Preferably, the support rod assembly 2 is made of steel.

[0034] like Figure 2 As shown, the main support rod 22 is a tubular structure, with a thread on the top end, and an adjusting groove 221 symmetrically formed at the thread. A pair of adjusting grooves 221 are connected to each other, and the thread is threadedly connected to a limit piece 222, so that the limit piece 222 can move up and down at the thread; the bottom end of the main support rod 22 is threadedly installed with a base support 223, and the base support 223 includes a connecting portion 2231 and a bottom plate 2232. The connecting portion 2231 is fixedly installed on the bottom plate 2232, and the bottom plate 2232 is a plate-like structure, which improves the stability of the main support rod 22; the connecting portion 2231 is a tubular structure, and its outer diameter corresponds to the inner diameter of the main support rod 22, and the upper end of the connecting portion 2231 is threaded, and the thread is threadedly connected to the limit piece 222, and the bottom end of the main support rod 22 is supported on the limit piece 222, so that the limit piece 222 can move up and down at the thread and drive the main support rod 22 to adjust the height. Preferably, the limiting member 222 is a buckle or a nut with threads on the inner side, and the threads of the limiting member 222 correspond to the threads of the main support rod 22 and the threads of the connecting portion 2231 respectively.

[0035] The movable frame 23 includes a clamp 231 and a leg 232. The clamp 231 is mounted on the main support rod 22 and fixed by bolts. A plurality of legs 232 are hinged circumferentially on the clamp 231, and a pulley is threadedly installed on the bottom end of the leg 232, which is convenient for driving the main support rod 22 to move to a specified position; when moving to the specified position for fixing, the pulley can be unscrewed from the leg 232 and fixed to the ground by supporting the leg 232; the limiting piece 222 on the connecting part 2231 can also be screwed to lift the main support rod 22 so that the pulley is away from the ground to complete the fixation; the clamp 231 can also be moved upward on the main support rod 22 to make the pulley away from the ground, and then the clamp 231 is tightened against the main support rod 22 by bolts to complete the fixation; the installation angle of the leg 232 can also be adjusted so that the pulley is away from the ground to complete the fixation.

[0036] like Figure 3 As shown, the supporting rod 21 is a tubular structure, and symmetrical adjustment holes 211 are formed on the supporting rod 21 at intervals, and a pair of adjustment holes 211 are connected to each other; the adjustment hole 211 matches the adjustment slot 221, and coarse adjustment is performed through the adjustment hole 211, and fine adjustment is performed through the adjustment slot 221, and the pin is passed through the adjustment slot 221 and the adjustment hole 211 in turn, and the two ends of the pin are supported on the limit piece 222, so as to facilitate the adjustment of the installation height of the supporting rod 21 on the main support rod 22; the top end of the supporting rod 21 is threadedly connected to the top support 212, and the top support 212 is supported on the bottom end of the concrete support 1, and the top support 212 can adjust the installation height on the supporting rod 21 to better fit the concrete support 1.

[0037] The working principle of the utility model is as follows: the main support rod 22 is moved to the bottom end of the concrete support 1 to be cut, the installation height of the supporting rod 21 is adjusted, the corresponding adjustment hole 211 is selected according to the height requirement, the latch is passed through the adjustment hole 211 for coarse adjustment, and the two ends of the latch are supported on the limit piece 222, the installation position of the limit piece 222 at the thread is adjusted, and the supporting rod 21 is driven to move to the corresponding position for fine adjustment, so that the top support 212 is against the bottom end of the concrete support 1.

[0038] After the cutting of the concrete support 1 is completed, the main support rod 22 is moved to the next concrete support 1 to be cut. After all the concrete supports 1 are cut, the support rod assembly 2 is stored for next use.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A temporary fixing device for concrete support of an open excavation pit, the temporary fixing device being supported on the bottom end of the section to be cut of the concrete support (1), characterized in that: include: A main support rod (22) having a top end slidably inserted into the supporting rod (21) and adapted to adjust the installation height of the supporting rod (21); A bottom bracket (223) is installed at the bottom end, suitable for supporting the main support rod (22); The moving frame (23) is installed at the lower part of the main support rod (22), and comprises a plurality of supporting legs (232) and is suitable for stably moving the main support rod (22).

2. A temporary fixing device for concrete support of open excavation pit according to claim 1, characterized in that: The top end of the main support rod (22) is provided with a thread, an adjustment groove (221) is provided at the thread, and a stopper (222) is provided at the adjustment groove (221) for installing the support rod (21).

3. A temporary fixing device for concrete support of open excavation pit according to claim 2, characterized in that: The base support (223) comprises a connecting portion (2231) and a bottom plate (2232); the connecting portion (2231) is fixedly mounted on the bottom plate (2232); and the upper end portion of the connecting portion (2231) is located inside the main support rod (22).

4. A temporary fixing device for concrete support of open excavation pit according to claim 3, characterized in that: The connecting portion (2231) is provided with a thread, and the limiting member (222) is provided at the thread, which is suitable for adjusting the extension length of the connecting portion (2231).

5. A temporary fixing device for concrete support of open excavation pit according to claim 4, characterized in that: The supporting rod (21) is provided with a plurality of adjustment holes (211) at intervals, and the adjustment holes (211) cooperate with the adjustment grooves (221) to pass a latch, and the two ends of the latch overlap the limiting member (222), which is suitable for adjusting the installation height of the supporting rod (21).

6. A temporary fixing device for concrete support of open excavation pit according to claim 5, characterized in that: A top support (212) is threadedly mounted on the top end of the support rod (21), and the top support (212) is used to support the concrete support (1).

7. A temporary fixing device for concrete support of open excavation pit according to claim 6, characterized in that: The mobile frame (23) further comprises a hoop (231), wherein the hoop (231) is sleeved on the main support rod (22), and a plurality of legs (232) are hingedly mounted on the hoop (231) at intervals.

8. A temporary fixing device for concrete support of open excavation pit according to claim 7, characterized in that: A pulley is threadedly mounted on the bottom end of the support leg (232).

9. A temporary fixing device for concrete support of an open excavation pit according to any one of claims 1 to 8, characterized in that: The main support rod (22) is a hollow cylindrical structure.

10. A temporary fixing device for concrete support of an open excavation pit according to any one of claims 2 to 8, characterized in that: The limiting member (222) is a nut.

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