Foundation pit supporting device for subway station construction

Abstract

The foundation pit supporting device for subway station construction comprises supports, the supports are arranged in pairs, supporting plates are movably arranged in the supports, a plurality of reinforcing rods are transversely and fixedly arranged on the supporting plates at equal intervals in a penetrating mode, sliding blocks are fixedly arranged at the two ends of each reinforcing rod, and the sliding blocks are correspondingly inserted into corresponding sliding grooves; positioning blocks are fixedly connected to the positions, on the two sides of the reinforcing rod, of the outer end of the support, and the sliding grooves are formed in the opposite faces of the positioning blocks; and a rectangular cavity is formed in the positioning supporting column, and connecting openings are formed in the two sides of the rectangular cavity at equal intervals. According to the structure provided by the embodiment of the invention, the ends of the ejector rods can move outwards to push the supporting plates composed of the reinforcing rods and the supporting plates to extrude and move towards the side wall of the foundation pit, and the extrusion force of the supporting plates on the side wall of the foundation pit is increased; the supporting force of each part of the supporting plate composed of the reinforcing rods and the supporting plates can be more uniform, and foundation pit supporting is more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit support, and particularly relates to a foundation pit support device for subway station construction. Background Art

[0002] Foundation pit support is a support, reinforcement and protection measure for the side wall of the foundation pit or foundation trench and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment. Especially during the pipeline construction process, it is necessary to first set up vertical support piles or diaphragm walls outside the foundation pit, and then erect horizontal supports between the support piles or diaphragm walls to prevent the support piles or diaphragm walls from toppling. However, during the erection of the horizontal supports, the exposure time of the foundation pit is increased. If the foundation pit is exposed for a long time, the phenomenon of upward heaving will occur after the lower layer of soil in the foundation pit releases pressure. Rainfall or water drained into the pit will soften the soil in the pit, reducing the passive resistance of the support structure, causing the support structure to displace inward, resulting in settlement and deformation around the foundation pit, endangering the safety of surrounding buildings and structures. Therefore, a foundation pit support device is needed;

[0003] When an ordinary foundation pit support device is used, the supporting force of the supporting side plates of the foundation pit cannot reach the required level. Moreover, for the support of a deeper foundation pit, multiple support plates need to be stacked, which is very troublesome to use. Therefore, we propose a foundation pit support device for subway station construction. Summary of the Invention

[0004] The present application provides a foundation pit support device for subway station construction to solve the above-mentioned problems.

[0005] The present application provides a foundation pit support device for subway station construction, including:

[0006] A bracket, the brackets are arranged in pairs, a support plate is movably arranged inside the bracket, and a plurality of reinforcing rods are fixedly arranged horizontally and equidistantly through the support plate. Sliders are fixedly arranged at both ends of the reinforcing rod, and the sliders are correspondingly inserted into the corresponding chutes. Positioning blocks are fixedly connected to both sides of the reinforcing rod at the outer end of the bracket, and the chutes are opened on the opposite side surfaces of the positioning blocks;

[0007] A positioning support column, a rectangular cavity is opened inside the positioning support column, connecting ports are equidistantly opened on both sides of the rectangular cavity, and rectangular sliders are movably arranged equidistantly inside the rectangular cavity. A transmission screw rod is inserted through the middle of the rectangular slider, and the forward and reverse rotation of the transmission screw rod drives the rectangular slider to move up and down;

[0008] First ear plates are fixedly arranged at both ends of the rectangular slider, a second ear plate is fixedly connected to the middle of the opposite surface of the reinforcing rod, and a top rod is rotatably connected between the opposite first ear plate and the second ear plate through a rotating shaft.

[0009] Preferably, the upper and lower sides of the drive screw are rotatably connected to the upper and lower sides of the rectangular cavity through bearings.

[0010] Preferably, a worm gear is fixedly sleeved on the lower part of the outer side of the drive screw, and a worm is meshed and connected to the outer side of the worm gear. The two sides of the worm are inserted into the lower side of the positioning support column through bearings, and a manual turntable is fixedly sleeved on the end of the worm.

[0011] Preferably, the lower end of the bracket is fixedly connected to a bottom plate.

[0012] Preferably, an inclined surface is provided at the outer end of the positioning block.

[0013] Preferably, the ejector rod can be provided with multiple segments, and the multiple segments of the ejector rod are inserted and connected through a threaded screw.

[0014] Preferably, the lower end of the positioning support column is fixedly connected to a positioning ring, and a plurality of circular holes are formed in an annular array on the outer side of the positioning ring.

[0015] Preferably, the corresponding first ear plate is movably inserted into the inside of the connection port.

[0016] Preferably, the lengths of all the ejector rods are the same.

[0017] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:

[0018] For the structure provided by the embodiment of the present application, manually rotate the manual turntable, which drives the worm to rotate, and then drives the worm gear to rotate, so that the drive screw rotates, and drives the rectangular slider to move upward. As the rectangular slider moves upward, the ejector rod will tend to be in a horizontal state, and the end of the ejector rod will move outward, pushing the support plate composed of each reinforcing rod and the support plate towards the side wall of the foundation pit to be displaced, increasing the extrusion force of the support plate on the side wall of the foundation pit. And through the arrangement of a plurality of reinforcing rods and ejector rods, the supporting force of each part of the support plate composed of the reinforcing rods and the support plate can be made more uniform, and the support of the foundation pit is more convenient. Description of the Drawings

[0019] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments in line with the present application, and are used together with the specification to explain the principles of the present application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1Overall structure diagram provided by the embodiments of the present application;

[0022] Figure 2 Bracket structure diagram provided by the embodiments of the present application;

[0023] Figure 3 Driving screw transmission structure diagram provided by the embodiments of the present application;

[0024] Figure 4 For the embodiments of the present application Figure 1 Enlarged view at position A in the figure;

[0025] Figure 5 Cross-sectional view of the positioning support column provided by the embodiments of the present application;

[0026] Figure 6 Cross-sectional view of the connection between the positioning support column and the rectangular slider provided by the embodiments of the present application.

[0027] In the figure: 1, positioning support column; 2, positioning ring; 3, manual turntable; 4, connection port; 5, bracket; 6, reinforcing rod; 7, support plate; 8, positioning block; 9, second ear plate; 10, bottom plate; 11, ejector rod; 12, first ear plate; 13, rectangular slider; 14, driving screw; 15, worm gear; 16, worm; 17, slider; 18, chute; 19, rectangular cavity. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0029] The various embodiments of the present application may exist in the form of a range. It should be understood that the description in the form of a range is only for convenience and brevity and should not be construed as a rigid limitation on the scope of the present application. Therefore, it should be considered that the described range description has specifically disclosed all possible sub-ranges and individual values within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and individual numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Additionally, whenever a numerical range is indicated in the present application, it means including any cited numbers (fractions or integers) within the indicated range. Unless otherwise specifically stated, various raw materials, reagents, instruments, and equipment used in the present application can be obtained through market purchases or can be prepared using existing equipment.

[0030] In this application, unless otherwise specified, the orientation terms such as "upper" and "lower" specifically refer to the drawing directions in the attached drawings. Additionally, in this application, the terms "include", "comprise", etc. mean "include but are not limited to". In this application, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. In this application, "and / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Where A and B can be singular or plural. In this application, "at least one" means one or more, and "multiple" means two or more. "At least one kind", "at least one of the following items", or similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c" can both represent: a, b, c, a - b (i.e., a and b), a - c, b - c, or a - b - c, where a, b, and c can be single or multiple respectively.

[0031] Figure 1 It is the overall structure diagram provided by the embodiment of this application;

[0032] Figure 2 It is the support structure diagram provided by the embodiment of this application;

[0033] Figure 3 It is the transmission screw drive structure diagram provided by the embodiment of this application;

[0034] Figure 4 It is for the embodiment of this application Figure 1 The enlarged view at position A in;

[0035] Figure 5 It is the sectional view of the positioning support column provided by the embodiment of this application;

[0036] Figure 6 It is the sectional view of the positioning support column connecting the rectangular slider provided by the embodiment of this application.

[0037] As Figures 1-6 shown, the embodiment of this application provides a foundation pit support device for subway station construction, including:

[0038] Bracket 5, the brackets 5 are arranged in pairs, a support plate 7 is movably arranged inside the bracket 5, and a plurality of reinforcing rods 6 are fixedly arranged horizontally and equidistantly through the support plate 7. Sliders 17 are fixedly arranged at both ends of the reinforcing rod 6, and the sliders 17 are correspondingly inserted into the corresponding chutes 18. Positioning blocks 8 are fixedly connected to both sides of the reinforcing rod 6 at the outer end of the bracket 5, and the chutes 18 are opened on the opposite side surfaces of the positioning blocks 8;

[0039] Positioning support column 1, a rectangular cavity 19 is opened inside the positioning support column 1, connecting ports 4 are equidistantly opened on both sides of the rectangular cavity 19, and rectangular sliders 13 are movably arranged equidistantly inside the rectangular cavity 19. A transmission screw rod 14 is inserted through the middle of the rectangular slider 13, and the forward and reverse rotation of the transmission screw rod 14 drives the up and down displacement of the rectangular slider 13;

[0040] First ear plates 12 are fixedly arranged at both ends of the rectangular slider 13, a second ear plate 9 is fixedly connected to the middle of the opposite surface of the reinforcing rod 6, and a top rod 11 is rotatably connected between the opposite first ear plates 12 and second ear plates 9 through a rotating shaft.

[0041] As Figure 3 and Figure 6 shown: The upper and lower sides of the transmission screw rod 14 are rotatably connected to the upper and lower sides of the rectangular cavity 19 through bearings.

[0042] Specifically: The forward and reverse rotation of the transmission screw rod 14 can drive the up and down displacement of the rectangular slider 13.

[0043] As Figure 3 shown: A worm gear 15 is fixedly sleeved on the lower part of the outer side of the transmission screw rod 14, and a worm 16 is meshed and connected to the outer side of the worm gear 15. The two sides of the worm 16 are inserted into the lower side of the positioning support column 1 through bearings, and a manual turntable 3 is fixedly sleeved at the end of the worm 16.

[0044] Specifically: The rotation of the worm 16 can drive the rotation of the worm gear 15, so that the transmission screw rod 14 rotates, and the transmission screw rod 14 can rotate forward and backward.

[0045] As Figure 1 shown: The lower end of the bracket 5 is fixedly connected to a bottom plate 10.

[0046] Specifically: The bottom plate 10 can make the bracket 5 placed stably.

[0047] As Figure 1 shown: The outer end of the positioning block 8 is provided with an inclined surface.

[0048] Specifically: The inclined surface can facilitate the insertion of the positioning block 8 into the side wall of the foundation pit to position the position of the bracket 5.

[0049] As Figure 1As shown: The ejector rod 11 can be provided with multiple sections, and the multiple sections of the ejector rod 11 are connected by inserting a threaded screw rod.

[0050] Specifically: The length of the ejector rod 11 can be selected according to the width of the foundation pit.

[0051] As Figure 1 shown: A positioning ring 2 is fixedly connected to the lower end of the positioning support column 1, and a plurality of circular holes are formed in an annular array on the outer side of the positioning ring 2.

[0052] Specifically: The positioning ring 2 can make the placement of the positioning support column 1 stable.

[0053] As Figure 6 shown: The corresponding first ear plate 12 is movably inserted into the inside of the connection port 4.

[0054] Specifically: The height of the connection port 4 is greater than the height of the first ear plate 12, and the first ear plate 12 displaces inside the connection port 4.

[0055] As Figure 1 shown: The lengths of all the ejector rods 11 are the same.

[0056] Specifically: The ejector rod 11 is composed of multiple sections, so that the length of the ejector rod 11 can be selected according to the width of the foundation pit.

[0057] When the equipment is in use, first place the two brackets 5 at the two side walls of the foundation pit, then connect the ejector rod 11 through the second ear plate 9, and then connect the other end of the ejector rod 11 to the first ear plate 12. After connecting the ejector rod 11, the ejector rod 11 is in an inclined state. Then, the ground pile can be inserted into the circular hole of the positioning ring 2 to position the position of the positioning support column 1. Then, manually rotate the manual turntable 3 to drive the worm 16 to rotate, drive the worm gear 15 to rotate, make the transmission screw rod 14 rotate, and drive the rectangular slider 13 to displace upward. As the rectangular slider 13 displaces upward, the ejector rod 11 will tend to be in a horizontal state, and the end of the ejector rod 11 will displace outward, pushing the support plate composed of each reinforcing rod 6 and the support plate 7 to squeeze and displace toward the side wall of the foundation pit, increasing the squeezing force of the support plate on the side wall of the foundation pit;

[0058] And the height of the support plate composed of the reinforcing rod 6 and the support plate 7 can be set to the required height as needed. Through the arrangement of the multiple reinforcing rods 6 and the ejector rod 11, the support force at each place of the support plate composed of the reinforcing rod 6 and the support plate 7 can be made more uniform.

[0059] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined in the present application can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown in the present application, but rather to the broadest scope consistent with the principles and novel features claimed in the present application.

Claims

1. A foundation pit support device for subway station construction, characterized in that: include: A bracket (5), wherein the bracket (5) is arranged in pairs, a support plate (7) is movably arranged inside the bracket (5), and a plurality of reinforcing rods (6) are fixedly arranged transversely through the support plate (7) at equal intervals, sliders (17) are fixedly arranged at both ends of the reinforcing rod (6), and the sliders (17) are correspondingly inserted in corresponding slide grooves (18), and the outer ends of the bracket (5) are fixedly connected with positioning blocks (8) on both sides of the reinforcing rod (6), and the slide grooves (18) are arranged on the opposite side of the positioning blocks (8); A positioning support column (1), wherein a rectangular cavity (19) is formed inside the positioning support column (1), connection ports (4) are formed at equal distances on both sides of the rectangular cavity (19), and a rectangular slider (13) is movably provided at equal distances inside the rectangular cavity (19), and a transmission screw (14) is inserted through the middle of the rectangular slider (13), and the transmission screw (14) drives the rectangular slider (13) to move up and down by forward and reverse rotation; A first ear plate (12) is fixedly provided at both ends of the rectangular sliding block (13), a second ear plate (9) is fixedly connected to the middle of the opposite surface of the reinforcing rod (6), and a top rod (11) is rotatably connected between the first ear plate (12) and the second ear plate (9) via a rotating shaft.

2. A foundation pit support device for subway station construction according to claim 1, characterized in that: The upper and lower sides of the transmission screw (14) are rotatably connected to the upper and lower sides of the rectangular cavity (19) via bearings.

3. The foundation pit support device for subway station construction according to claim 1, characterized in that: A worm wheel (15) is fixedly sleeved on the lower outer side of the transmission screw (14), and a worm (16) is meshingly connected to the outer side of the worm wheel (15). Both sides of the worm (16) are inserted into the lower side of the positioning support column (1) through bearings, and a manual turntable (3) is fixedly sleeved on the end of the worm (16).

4. The foundation pit support device for subway station construction according to claim 1, characterized in that: The lower end of the bracket (5) is fixedly connected to a bottom plate (10).

5. The foundation pit supporting device for subway station construction according to claim 1, characterized in that: The outer end of the positioning block (8) is provided with an inclined surface.

6. The foundation pit support device for subway station construction according to claim 1, characterized in that: The push rod (11) may be provided with multiple sections, and the multiple sections of the push rod (11) are plug-connected by means of threaded screws.

7. The foundation pit support device for subway station construction according to claim 1, characterized in that: The lower end of the positioning support column (1) is fixedly connected to a positioning ring (2), and the outer side of the positioning ring (2) is provided with a plurality of circular holes in a circular array.

8. The foundation pit support device for subway station construction according to claim 1, characterized in that: The first ear plate (12) is correspondingly movably plugged into the interior of the connecting port (4).

9. The foundation pit support device for subway station construction according to claim 1, characterized in that: The lengths of the push rods (11) are the same.

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