Foundation pit periphery protection structure convenient to assemble and disassemble

Abstract

The utility model provides a foundation pit periphery protection structure convenient to mount and demount, which relates to the technical field of foundation pit enclosure, and comprises long guardrails and short guardrails, and the protection structure is formed by two long guardrails and two short guardrails in a rectangular surrounding manner; a U-shaped positioning frame is welded to the center of one long guardrail, and an I-shaped synchronous frame is slidably mounted on the U-shaped positioning frame in a spring pushing mode; two rows of inserting shafts are symmetrically welded on two vertical side rods of the I-shaped synchronous frame, and the two rows of inserting shafts correspondingly penetrate through and are in sliding fit with the two vertical side rods of the long guardrail; and the two rows of inserting shafts are matched with the two vertical sliding shafts and the two vertical side rods, close to the vertical sliding shafts, on the two short guardrails in a penetrating and inserting mode under the designated use working condition. Compared with the prior art, the trouble that the two short guardrails and the two long guardrails need to be fixed, assembled, separated and disassembled step by step in sequence when the protective structure is assembled and disassembled before and after use can be omitted, and the protective structure is convenient to operate and use.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit protection technology, and in particular to a foundation pit perimeter protection structure that is easy to install and dismantle. Background Technology

[0002] Currently, some protective structures on the market use welding and other fixed connection methods, which are cumbersome to install and dismantle, require professional tools and personnel, and consume a lot of time and manpower. Developing a protective structure that is easy to install and dismantle, reusable, and adaptable to different foundation pit scenarios has become an urgent problem to be solved in the current construction industry.

[0003] The existing protective structures are mostly composed of four guardrails that are designed as separate splicing units. This means that when assembling and disassembling the protective structure, the four guardrails must be fixed and spliced ​​and then separated in sequence, which is cumbersome and inconvenient and reduces the efficiency of the installation and dismantling of the protective structure. Utility Model Content

[0004] In view of this, the present invention provides a foundation pit perimeter protection structure that is easy to install and dismantle, in order to solve the problem of low installation and dismantling efficiency of the protection structure.

[0005] The technical solution proposed by this utility model is: a foundation pit perimeter protection structure that is easy to install and dismantle, specifically including long guardrails and short guardrails, wherein the protection structure is composed of two long guardrails and two short guardrails in a rectangular enclosure;

[0006] Two central shafts are symmetrically welded to the inner sides of the two vertical side bars of one long guardrail. Two short guardrails are symmetrically rotatably mounted on the two central shafts. Two horizontal guide shafts are symmetrically fixed to the upper and lower side bars of another long guardrail. Two vertical sliding shafts are symmetrically slidably mounted on the two horizontal guide shafts. The vertical side bars of the two short guardrails away from the central shafts are rotatably connected to the two horizontal guide shafts. A U-shaped positioning frame is welded to the center of one long guardrail. An I-shaped synchronous frame is slidably mounted on the U-shaped positioning frame in the form of a spring push. Two rows of insert shafts are symmetrically welded to the two vertical side bars of the I-shaped synchronous frame. The two rows of insert shafts are slidably engaged with the two vertical side bars of the long guardrail. Under specified operating conditions, the two rows of insert shafts are engaged with the two vertical sliding shafts and the two vertical side bars of the two short guardrails near the vertical sliding shafts.

[0007] Furthermore, the horizontal connecting plate of the I-shaped synchronous frame slides in conjunction with the two longitudinal side shafts of the U-shaped positioning frame.

[0008] Furthermore, the spring that pushes the I-shaped synchronous frame is fitted onto the two longitudinal side shafts of the U-shaped positioning frame and is compressed and clamped between the transverse side shaft of the U-shaped positioning frame and the transverse connecting plate of the I-shaped synchronous frame.

[0009] Furthermore, two sliders are symmetrically welded to the upper and lower ends of the vertical sliding shaft.

[0010] Furthermore, the two sliders correspond to two transverse guide shafts that slide in a sliding fit.

[0011] Furthermore, L-shaped connecting blocks are welded to both ends of the two horizontally placed guide shafts, and the tail ends of the four L-shaped connecting blocks are welded and fixed to the ends of the upper and lower side bars of the two long guardrails, respectively.

[0012] The present invention provides a foundation pit perimeter protection structure that is easy to install and dismantle, and has the following beneficial effects:

[0013] 1. When the protective structure is in an idle and retracted state, it presents a folded and reduced shape. When the protective structure is in this state, its volume is greatly reduced, which can effectively reduce the space occupied by the support and placement, and facilitate transportation and storage.

[0014] Second, in this utility model, the two short guardrails and two long guardrails that make up the protective structure are integrated together in a rotating connection. When unfolding and installing the protective structure, it is only necessary to flip the two short guardrails back to back and position them by inserting two rows of pins. When disassembling and shrinking the protective structure after use, it is only necessary to pull the two rows of pins away from the two short guardrails and swing the two short guardrails in opposite directions. Compared with the existing technology that sets the two short guardrails and two long guardrails as separate splices, this can save the trouble of fixing and assembling the two short guardrails and disassembling them step by step when installing and disassembling the protective structure before and after use. It is convenient to operate and use, and helps to improve the efficiency of installation and disassembly of the protective structure before and after use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 A schematic diagram of the overall unfolded structure of this utility model is shown;

[0019] Figure 2 This diagram shows a rear side view of the overall unfolded state of the present invention;

[0020] Figure 3 A schematic diagram showing the overall disassembled state of this utility model is provided.

[0021] Figure 4A schematic diagram of the overall folded and retracted state of this utility model is shown;

[0022] Figure 5 This diagram shows a rear side view of the present invention in its overall folded and retracted state;

[0023] Figure 6 A schematic diagram showing the installation position of the vertical sliding shaft in this utility model is provided.

[0024] List of reference numerals in the attached diagram:

[0025] 1. Long guardrail; 101. U-shaped positioning frame; 102. Horizontal guide shaft; 1021. L-shaped connecting block; 103. Central shaft;

[0026] 2. Short guardrail;

[0027] 3. Vertical sliding shaft; 301. Sliding block;

[0028] 4. I-shaped synchronous frame; 401. Insert shaft. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] Please refer to Figures 1 to 6 Example 1:

[0031] This embodiment proposes a foundation pit perimeter protection structure that is easy to install and dismantle, including a long guardrail 1 and a short guardrail 2. The protection structure is composed of two long guardrails 1 and two short guardrails 2 arranged in a rectangular shape.

[0032] Two central pivots 103 are symmetrically welded to the inner sides of the two vertical side bars of a long guardrail 1. Two short guardrails 2 are symmetrically rotatably mounted on the two central pivots 103. Two horizontal guide shafts 102 are symmetrically fixed to the upper and lower side bars of another long guardrail 1. Two vertical sliding shafts 3 are symmetrically slidably mounted on the two horizontal guide shafts 102. The vertical side bars of the two short guardrails 2 that are away from the central pivots 103 are rotatably connected to the two horizontal guide shafts 102. The center of the long guardrail 1 A U-shaped positioning frame 101 is welded on each side, and an I-shaped synchronous frame 4 is slidably installed on the U-shaped positioning frame 101 by means of spring push. Two rows of insert shafts 401 are symmetrically welded on the two vertical side bars of the I-shaped synchronous frame 4. The two rows of insert shafts 401 are slidably engaged with the two vertical side bars of the long guardrail 1. Under the specified working conditions, the two rows of insert shafts 401 are engaged with the two vertical sliding shafts 3 and the two vertical side bars of the two short guardrails 2 near the vertical sliding shafts 3.

[0033] Implementation 2: This embodiment is based on Implementation 1, but with the following additions:

[0034] The horizontal connecting plate of the I-shaped synchronous frame 4 is slidably engaged with the two longitudinal side shafts of the U-shaped positioning frame 101; the spring that pushes the I-shaped synchronous frame 4 is fitted on the two longitudinal side shafts of the U-shaped positioning frame 101 and is compressed and clamped between the horizontal side shaft of the U-shaped positioning frame 101 and the horizontal connecting plate of the I-shaped synchronous frame 4.

[0035] Preferably, two sliders 301 are symmetrically welded to the upper and lower ends of the vertical sliding shaft 3.

[0036] Preferably, the two sliders 301 are in sliding engagement with the two horizontally placed guide shafts 102.

[0037] Preferably, L-shaped connecting blocks 1021 are welded to both ends of the two horizontally placed guide shafts 102, and the tail ends of the four L-shaped connecting blocks 1021 are welded and fixed to the ends of the upper and lower side bars of the two long guardrails 1 respectively.

[0038] The following section provides a detailed explanation of the working principles, specific details, implementation steps, functions and interrelationships of each feature, and their roles in realizing this technical solution:

[0039] This protective structure has two usage states: an deployed state and a retracted, idle state. When deployed, the structure forms a rectangular fence (see reference). Figure 1 When the protective structure is in an idle, retracted state, its overall shape is folded and reduced (see reference). Figure 4 When the protective structure is in this state, its volume is greatly reduced, which can effectively reduce the space occupied by the support and placement, and facilitate transportation and storage.

[0040] When unfolding the protective structure, firstly, flip the two short guardrails 2 on the protective structure in the retracted state to face away from each other. When the two short guardrails 2 are flipped to face away from each other, they can drive the two vertical sliding shafts 3 to slide away from each other along the two horizontal guide shafts 102, and drive the two long guardrails 1 to slide away from each other. When the two short guardrails 2 are flipped to the vertical position, the distance between the two long guardrails 1 reaches the maximum, and the protective structure is fully unfolded and presents a complete rectangular fence shape. Then, the two rows of insert shafts 401 are driven by the I-shaped synchronous frame 4 to penetrate and connect with the two vertical sliding shafts 3 and the two vertical side rods on the two short guardrails 2 near the vertical sliding shafts 3. The two short guardrails 2 are inserted and positioned together with the two vertical sliding shafts 3 and the long guardrails 1 located on one side of the U-shaped positioning frame 101. After the two short guardrails 2 are inserted and positioned, they are restricted from rotating, thereby keeping the protective structure in the unfolded rectangular fence shape.

[0041] When shrinking and folding the protective structure, firstly, the two rows of insert shafts 401, two vertical sliding shafts 3, and two short guardrails 2 are removed through the I-shaped synchronous frame 4. The two short guardrails 2 are then released, and then the two short guardrails 2 are swung towards each other. When the two short guardrails 2 are swung towards each other, they can drive the two vertical sliding shafts 3 to slide towards each other and pull the two long guardrails 1 to slide towards each other. When the short guardrails 2 are swung to the maximum tilt angle, they are in a folded state, and the distance between the two long guardrails 1 is minimized, thus completing the shrinking and folding of the protective structure.

[0042] In this utility model, the two short guardrails 2 and two long guardrails 1 that make up the protective structure are integrated together in a rotating connection. When unfolding and installing the protective structure, it is only necessary to flip the two short guardrails 2 in opposite directions and insert them into the two rows of shafts 401 to position them. When disassembling and shrinking the protective structure after use, it is only necessary to pull the two rows of shafts 401 away from the two short guardrails 2 and rotate them in opposite directions. Compared with the existing technology that sets the two short guardrails 2 and two long guardrails 1 as separate splices, this can save the trouble of fixing and assembling the two short guardrails 2 and disassembling the two long guardrails 1 in steps before and after use. It is convenient to operate and helps to improve the efficiency of installation and disassembly of the protective structure before and after use.

[0043] The deployed protective structure is placed on the ground around the foundation pit during use.

[0044] The following points should be noted in this article:

[0045] 1. The accompanying drawings of this utility model embodiment only involve the structures involved in this utility model embodiment; other structures can refer to general designs.

[0046] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0047] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A foundation pit perimeter protection structure that is easy to install and dismantle, comprising a long guardrail (1) and a short guardrail (2), wherein the protection structure is composed of two long guardrails (1) and two short guardrails (2) arranged in a rectangular shape; Its features are, Two central shafts (103) are symmetrically welded to the inner sides of the two vertical side bars of one long guardrail (1). Two short guardrails (2) are symmetrically rotatably mounted on the two central shafts (103). Two horizontal guide shafts (102) are symmetrically fixed to the upper and lower side bars of another long guardrail (1). Two vertical sliding shafts (3) are symmetrically slidably mounted on the two horizontal guide shafts (102). The vertical side bars of the two short guardrails (2) that are away from the central shafts (103) are rotatably connected to the two horizontal guide shafts (102). The center of one long guardrail (1) A U-shaped positioning frame (101) is partially welded on the U-shaped positioning frame (101), and an I-shaped synchronous frame (4) is slidably installed on the U-shaped positioning frame (101) in the form of spring push; two rows of insert shafts (401) are symmetrically welded on the two vertical side rods of the I-shaped synchronous frame (4), and the two rows of insert shafts (401) are slidably connected to the two vertical side rods of the long guardrail (1); under the specified working conditions, the two rows of insert shafts (401) are connected to the two vertical sliding shafts (3) and the two vertical side rods near the vertical sliding shafts (3) on the two short guardrails (2).

2. The easily installable and dismantled perimeter protection structure for foundation pits according to claim 1, characterized in that, The horizontal connecting plate of the I-shaped synchronous frame (4) slides with the two vertical side shafts of the U-shaped positioning frame (101).

3. The easily installable and dismantled perimeter protection structure for foundation pits according to claim 2, characterized in that, The spring that pushes the I-shaped synchronous frame (4) is fitted on the two longitudinal side shafts of the U-shaped positioning frame (101) and compressed and clamped between the transverse side shaft of the U-shaped positioning frame (101) and the transverse connecting plate of the I-shaped synchronous frame (4).

4. The easily installable and dismantled perimeter protection structure for foundation pits according to claim 1, characterized in that, The vertical sliding shaft (3) has two sliders (301) symmetrically welded at its upper and lower ends.

5. The easily installable and dismantled perimeter protection structure for foundation pits according to claim 4, characterized in that, The two sliders (301) correspond to the two transverse guide shafts (102) in sliding engagement.

6. The easily installable and dismantled perimeter protection structure for foundation pits according to claim 1, characterized in that, Both ends of the two horizontal guide shafts (102) are welded with L-shaped connecting blocks (1021), and the tail ends of the four L-shaped connecting blocks (1021) are welded and fixed to the ends of the upper and lower side bars of the two long guardrails (1).

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