Detachable foundation pit supporting device

Abstract

The utility model discloses a detachable foundation pit supporting device, and belongs to the technical field of constructional engineering, the detachable foundation pit supporting device comprises a plurality of supporting columns and a plurality of groups of connecting assemblies, each connecting assembly comprises a first connecting part and a second connecting part, each first connecting part comprises a supporting disc and at least one connecting arm, an inserting hole is formed in the supporting disc in the first direction, the connecting arms are arranged on the peripheral face of the supporting disc and detachably connected with the supporting disc, and every two adjacent connecting arms in every two adjacent connecting assemblies are detachably connected through a first fastener; the second connecting part comprises a supporting column, a positioning column and a plurality of hooking arms, the positioning column is arranged at one end of the supporting column and inserted into the inserting hole, the hooking arms are arranged at the other end of the supporting column and arranged around the peripheral face of the supporting column at intervals, and one end of each hooking arm is rotationally connected with the supporting column; and a hooking part is formed at the other end of the hooking arm and used for hooking a flange plate at the end part of the support column. The adjacent supporting columns are convenient to assemble and disassemble through the connecting assemblies.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a detachable foundation pit supporting device. Background Art

[0002] Foundation pit refers to a large earth pit used for the construction of abutments, bridge piers and expanded foundations. Due to the risk of collapse of the earth pit, it is necessary to use support devices to support the side walls of the foundation pit during construction. By supporting the foundation pit, good conditions are created for the construction of underground structures, while ensuring the safety of the environment around the foundation pit.

[0003] Commonly used foundation pit support devices usually include multiple support columns. Most of the support columns are long columns, which take up a large space and are not convenient to assemble during support. After use, the support device needs to be disassembled, which is not convenient for storage and transportation. The assembly and disassembly work efficiency is low, resulting in poor practicality. Utility Model Content

[0004] The utility model aims to provide a detachable foundation pit supporting device to solve the technical problem in the prior art that the supporting columns occupy a large space and are inconvenient to store and transport.

[0005] As conceived above, the technical solution adopted by the utility model is:

[0006] A detachable foundation pit support device comprises a plurality of support columns and a plurality of connection components, wherein the connection components comprise:

[0007] A first connecting portion, comprising a support plate and at least one connecting arm, wherein the support plate is provided with a plug hole along a first direction, the connecting arm is provided on an outer peripheral surface of the support plate and is detachably connected to the support plate, and adjacent two connecting arms in two adjacent groups of the connecting assemblies are detachably connected via a first fastener;

[0008] The second connection part includes a support column, a positioning column and a plurality of hook arms, wherein the positioning column is arranged at one end of the support column and plugged into the plug hole, and the plurality of hook arms are arranged at the other end of the support column and are arranged at intervals around the outer circumference of the support column, one end of the hook arm is rotatably connected to the support column, and the other end of the hook arm forms a hook portion for hooking a flange at the end of the support column;

[0009] In the connecting assembly, one second connecting portion is provided and is located on one side of the supporting plate; or, two second connecting portions are provided and are evenly distributed on both sides of the supporting plate.

[0010] Preferably, the support plate includes two plate bodies abutting against each other along the first direction and a plurality of elbows spaced apart around the outer circumference of the plate bodies, the plug hole passes through the plate bodies, the elbow is U-shaped, one end of the elbow is plugged into a mounting hole on the outer circumference of one of the plate bodies, the other end of the elbow is plugged into a mounting hole on the outer circumference of another plate body, and the connecting arm is connected to the elbow.

[0011] Preferably, the support plate also includes two semi-ring plates, which are interlocked to form a accommodating cavity, and the plate body and the elbow are both arranged in the accommodating cavity, and the elbow abuts against the inner wall of the semi-ring plate. The connecting arm includes a sleeve, which is sleeved on the elbow and clamped between the elbow and the semi-ring plate.

[0012] Preferably, the connecting arm also includes a support beam, a screw and a coupling buckle, one end of the support beam is detachably connected to the sleeve via a second fastener, the screw is threadedly connected to the other end of the support beam, the coupling buckle is arranged at an end of the screw away from the support beam, the coupling buckle is rotatably connected to the screw, and the coupling buckles in two adjacent connecting arms in two adjacent groups of the connecting components are detachably connected via the first fastener.

[0013] Preferably, the support beam includes an outer sleeve and an inner sleeve, two connecting rods are provided at one end of the outer sleeve, the connecting rods are connected to the sleeve through the second fastener, one end of the inner sleeve is inserted into the outer sleeve and connected to the outer sleeve, and the other end of the inner sleeve is threadedly connected to the screw rod.

[0014] Preferably, the support plate further comprises a limit block, a limit cavity is provided on the plate body, the limit block passes through the limit cavities on the two plate bodies along the first direction to limit the rotation of the plate bodies, and the limit block is prismatic.

[0015] Preferably, the support plate also includes a locking rod, an abutment block and a knob, the locking rod is inserted into the limit block along the first direction, the abutment blocks are sleeved on both ends of the locking rod, the two ends of the locking rod are threadedly connected to the knob, and the abutment block is clamped between the knob and the plate body.

[0016] Preferably, the hook arm includes a first rotating member, a hook member and a first locking member, one end of the first rotating member is rotatably connected to the support column, the other end of the first rotating member is inserted into the first insertion hole of the hook member, and the end of the hook member away from the first rotating member forms the hook portion, and the first locking member is threadedly connected to the hook member and abuts against the first rotating member to lock the first rotating member and the hook member.

[0017] Preferably, a plurality of support arms are circumferentially spaced apart on the outer circumferential surface of the support portion, and an adjustment arm is provided corresponding to each of the support arms, one end of the support arm is rotatably connected to the support column, and the other end of the support arm is provided with a support head capable of abutting against the foundation pit, one end of the adjustment arm is rotatably connected to the support column, and the other end of the adjustment arm is slidably connected to the support arm.

[0018] Preferably, the adjusting arm includes a second rotating member, an adjusting member and a second locking member, one end of the second rotating member is rotatably connected to the support column, one end of the adjusting member is inserted into the second socket of the second rotating member, and the other end of the adjusting member is provided with a slider slidably connected to the support arm, and the second locking member is threadedly connected to the second rotating member and abuts against the adjusting member to lock the second rotating member and the adjusting member.

[0019] Beneficial effects of the utility model:

[0020] The detachable foundation pit support device proposed in the utility model, when supporting the foundation pit, the coaxially arranged adjacent support columns are connected by a connecting assembly, at this time, two second connecting parts are provided and evenly distributed on both sides of the support plate, during specific assembly, a second connecting part is connected to a support column, specifically, the hooking parts of multiple hooking arms hook the flange at the end of the support column; then, the second connecting part is plugged into the support plate, specifically, the positioning column is inserted into the plug-in hole, so that a second connecting part is located on one side of the support plate; then another second connecting part is connected to the other side of the support plate, specifically, the positioning column is inserted into the plug-in hole; and the other support column is connected to the second connecting part. For adjacent support columns that are parallel and spaced apart, two adjacent connecting arms are connected by a first fastener. In the above-mentioned detachable foundation pit support device, the adjacent support columns are conveniently assembled and disassembled through the connecting assembly, which improves work efficiency, and the length of the support column can be set according to needs. After disassembly, it is convenient to store and transport, reducing space occupancy and improving space utilization, thereby increasing practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a detachable foundation pit supporting device provided by an embodiment of the utility model;

[0022] Figure 2 It is a front view of the connection assembly provided by an embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the connection assembly provided by the embodiment of the utility model. Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the structure of the connection assembly provided by the embodiment of the utility model. Figure 2 ;

[0025] Figure 5 It is a structural schematic diagram of the first connecting portion provided by an embodiment of the utility model;

[0026] Figure 6 yes Figure 5 A magnified image of point A;

[0027] Figure 7 It is a structural schematic diagram of the second connecting portion provided in an embodiment of the utility model.

[0028] In the figure:

[0029] 10. Support column; 11. Flange;

[0030] 20. Connect components;

[0031] 21. first connecting part; 211. supporting plate; 2110. plug hole; 2111. plate body; 2112. elbow; 2113. semi-ring plate; 2114. stopper; 2115. locking rod; 2116. abutment block; 2117. knob; 212. connecting arm; 2121. sleeve; 2122. supporting beam; 21221. outer sleeve; 21222. inner sleeve; 21223. connecting rod; 2123. screw rod; 2124. buckle; 2125. second fastener;

[0032] 22. Second connecting portion; 221. Support column; 2211. First mounting seat; 2212. Second mounting seat; 2213. Third mounting seat; 222. Positioning column; 223. Hook arm; 2231. Hook portion; 2232. First rotating member; 2233. Hook member; 2234. First locking member; 224. Support arm; 2241. Guide groove; 225. Adjustment arm; 2251. Second rotating member; 2252. Adjustment member; 2253. Second locking member; 226. Support head; 2261. Protruding ridge; 227. Slider. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0037] See also Figures 1 to 7 The present embodiment provides a detachable foundation pit support device for supporting a foundation pit, which is easy to disassemble and store after use. The detachable foundation pit support device includes a plurality of support columns 10 and a plurality of connection components 20. The connection components 20 include a first connection portion 21 and a second connection portion 22. The first connection portion 21 includes a support plate 211 and at least one connection arm 212. The support plate 211 is provided with a plug hole 2110 along a first direction. The connection arm 212 is provided on the outer peripheral surface of the support plate 211 and is detachably connected to the support plate 211. The adjacent two connection arms 212 in two adjacent groups of connection components 20 are connected by a first fastener. The parts are detachably connected; the second connecting part 22 includes a supporting column 221, a positioning column 222 and a plurality of hooking arms 223, the positioning column 222 is arranged at one end of the supporting column 221 and is plugged into the plug hole 2110, and a plurality of hooking arms 223 are arranged at the other end of the supporting column 221 and are spaced around the outer circumference of the supporting column 221, one end of the hooking arm 223 is rotatably connected to the supporting column 221, and the other end of the hooking arm 223 forms a hooking part 2231 for hooking the flange 11 at the end of the supporting column 10.

[0038] In the connection assembly 20, one second connection part 22 is provided and is located on one side of the support plate 211; or, two second connection parts 22 are provided and are evenly distributed on both sides of the support plate 211. In the multiple groups of connection assemblies 20 of the detachable foundation pit support device, a part of the connection assemblies 20 may include two second connection parts 22, and another part of the connection assemblies 20 may include one second connection part 22. When the connection assembly 20 includes two second connection parts 22, the connection assembly 20 may connect two coaxial and adjacent support columns 10, or may connect adjacent support columns 10 that are parallel and spaced apart; when the connection assembly 20 includes one second connection part 22, the connection assembly 20 may be provided at the top of the support column 10, and is only used to connect adjacent support columns 10 that are parallel and spaced apart.

[0039] When supporting the foundation pit, the coaxially arranged adjacent supporting columns 10 are connected by the connecting assembly 20. At this time, two second connecting parts 22 are provided and evenly distributed on both sides of the supporting plate 211. When assembling, one second connecting part 22 is connected to one supporting column 10, specifically, the hooking parts 2231 of the multiple hooking arms 223 hook the flange 11 at the end of the supporting column 10; then, the second connecting part 22 is plugged into the supporting plate 211, specifically, the positioning column 222 is inserted into the plug hole 2110, so that one second connecting part 22 is located on one side of the supporting plate 211; then, another second connecting part 22 is connected to the other side of the supporting plate 211, specifically, the positioning column 222 is inserted into the plug hole 2110; and another supporting column 10 is connected to the second connecting part 22. For adjacent supporting columns 10 arranged in parallel and at intervals, two adjacent connecting arms 212 are connected by a first fastener. In the above-mentioned detachable foundation pit support device, adjacent support columns 10 are connected by connecting components 20 to facilitate assembly and disassembly, thereby improving work efficiency. The length of the support columns 10 can be set as needed, and they are easy to store and transport after disassembly, thereby reducing space occupancy, improving space utilization, and thus increasing practicality.

[0040] By plugging the support plate 211 and the positioning column 222, it is not only easy to install and disassemble, but also the position of the support plate 211 on the positioning column 222 can be adjusted according to needs to adapt to support columns 10 of different heights. One positioning column 222 can be provided. In order to prevent the support plate 211 from rotating, the positioning column 222 can be a prism. In this embodiment, the second connecting portion 22 includes a plurality of positioning columns 222, and the plurality of positioning columns 222 are arranged at intervals around the circumference of the support column 221. Correspondingly, a plurality of plug holes 2110 are provided on the support plate 211, and the plug holes 2110 are arranged one by one with the positioning columns 222.

[0041] The number of connecting arms 212 can be selected according to actual needs. If one group of connecting components 20 is connected to multiple groups of connecting components 20 adjacent to each other, multiple connecting arms 212 are provided; if one group of connecting components 20 is provided at the edge of the detachable foundation pit support device and is only connected to another group of connecting components 20, one connecting arm 212 is provided.

[0042] The support plate 211 may be an integral structure, and the connecting arm 212 is connected to the support plate 211 by bolts. The support plate 211 may also be a detachable structure for easy storage and transportation. In this embodiment, the support plate 211 includes two plate bodies 2111 abutting against each other along a first direction and a plurality of elbows 2112 spaced around the outer circumference of the plate bodies 2111, the plug hole 2110 passes through the plate bodies 2111, the elbows 2112 are U-shaped, one end of the elbow 2112 is plugged into a mounting hole on the outer circumference of one plate body 2111, and the other end of the elbow 2112 is plugged into a mounting hole on the outer circumference of the other plate body 2111, and the connecting arm 212 is connected to the elbow 2112.

[0043] There are multiple elbows 2112, and the number of connecting arms 212 can be equal to the number of elbows 2112, or the number of connecting arms 212 can be less than the number of elbows 2112. The number of connecting arms 212 is set according to actual needs.

[0044] The support plate 211 also includes two semi-ring plates 2113, which are buckled together to form a receiving cavity. The plate body 2111 and the elbow 2112 are both arranged in the receiving cavity. The elbow 2112 abuts against the inner wall of the semi-ring plate 2113. The connecting arm 212 includes a sleeve 2121, which is sleeved on the elbow 2112 and clamped between the elbow 2112 and the semi-ring plate 2113. The elbow 2112 and the plate body 2111 are clamped by the two semi-ring plates 2113, which further plays a limiting role. The sleeve 2121 is sleeved on the elbow 2112 and clamped between the elbow 2112 and the semi-ring plate 2113, so as to realize the detachable connection between the connecting arm 212 and the support plate 211, which is convenient for disassembly and storage.

[0045] The two semi-ring plates 2113 can be locked by bolts and nuts to facilitate installation and disassembly. Both ends of the semi-ring plate 2113 are provided with connecting ears, and the connecting ears are provided with through holes for passing bolts. The inner wall of the semi-ring plate 2113 is provided with a slot, and the elbow 2112 abuts against the inner wall of the semi-ring plate 2113 to be inserted into the slot, which further plays a limiting role.

[0046] Specifically, along the first direction, the length of the semi-ring plate 2113 is smaller than the length of the elbow 2112, and part of the elbow 2112 is exposed from both ends of the accommodating cavity, and the sleeve 2121 is sleeved behind the elbow 2112, and both ends of the sleeve 2121 are located outside the accommodating cavity. More specifically, an installation cavity is provided on the sleeve 2121, and the side of the elbow 2112 away from the disc body 2111 is inserted into the installation cavity, and at least part of the elbow 2112 abuts against the inner wall of the installation cavity to play a limiting role.

[0047] The sleeve 2121 is U-shaped, and the semi-annular plate 2113 is inserted into the U-shaped cavity of the sleeve 2121 , which is equivalent to the sleeve 2121 being clamped with the semi-annular plate 2113 , further playing a limiting role.

[0048] The connecting arm 212 also includes a support beam 2122, a screw rod 2123 and a mating buckle 2124. One end of the support beam 2122 is detachably connected to the sleeve 2121 via a second fastener 2125. The screw rod 2123 is threadedly connected to the other end of the support beam 2122. The mating buckle 2124 is arranged at an end of the screw rod 2123 away from the support beam 2122. The mating buckle 2124 is rotatably connected to the screw rod 2123. The mating buckles 2124 in two adjacent connecting arms 212 in two adjacent groups of connecting assemblies 20 are detachably connected via a first fastener.

[0049] The screw rod 2123 is threadedly connected to the support beam 2122. The length of the connecting arm 212 can be adjusted by rotating the screw rod 2123 to adapt to different installation spaces. The engaging buckle 2124 is rotatably connected to the screw rod 2123. Even if the screw rod 2123 rotates, the direction of the engaging buckle 2124 is not affected. The engaging buckle 2124 can be adjusted as needed to facilitate alignment of the two engaging buckles 2124 and installation of the first fastener. The first fastener and the second fastener 2125 can be bolts.

[0050] The rotational connection between the engaging buckle 2124 and the screw rod 2123 can adopt an existing rotational connection method, such as a bearing connection. Alternatively, a limiting hole is provided at one end of the engaging buckle 2124, a first limiting groove is provided on the inner wall of the limiting hole, the end of the screw rod 2123 is inserted into the first limiting groove, a limiting protrusion provided on the outer circumference of the screw rod 2123 slides into the first limiting groove along a second limiting groove provided on the inner wall of the limiting hole, the limiting protrusion is slidably connected with the first limiting groove, and a retaining spring can be sleeved on the screw rod 2123 to limit the engaging buckle 2124.

[0051] The support beam 2122 can be an integral structure or a detachable split structure. The shape of the support beam 2122 is not limited here, as long as it plays a supporting role. In this embodiment, the support beam 2122 includes an outer sleeve 21221 and an inner sleeve 21222, one end of the outer sleeve 21221 is provided with two connecting rods 21223, the connecting rods 21223 are connected to the sleeve 2121 through a second fastener 2125, one end of the inner sleeve 21222 is inserted into the outer sleeve 21221 and connected to the outer sleeve 21221, and the other end of the inner sleeve 21222 is threadedly connected to the screw 2123. The outer sleeve 21221 and the inner sleeve 21222 can be welded, or the outer sleeve 21221 and the inner sleeve 21222 can be connected by a ball joint, or the outer sleeve 21221 and the inner sleeve 21222 can be threadedly connected.

[0052] The support plate 211 also includes a limit block 2114. A limit cavity is provided on the plate body 2111. The limit block 2114 is provided along a first direction through the limit cavities on the two plate bodies 2111 to limit the rotation of the plate bodies 2111. The limit block 2114 is prism-shaped. In order to install the elbow 2112, a plurality of mounting holes are provided on the outer circumference of the plate body 2111. The limit block 2114 can play a limiting role, which is used to limit the rotation of the plate body 2111, so as to facilitate the alignment of the mounting holes on the two plate bodies 2111, so as to facilitate the installation of the elbow 2112. Correspondingly, the shape of the limit cavity is a rectangular cavity.

[0053] The support plate 211 also includes a locking rod 2115, an abutment block 2116 and a knob 2117. The locking rod 2115 is inserted into the limit block 2114 along the first direction. The two ends of the locking rod 2115 are sleeved with the abutment blocks 2116. The two ends of the locking rod 2115 are threadedly connected to the knob 2117. The abutment block 2116 is sandwiched between the knob 2117 and the plate body 2111. Through the cooperation of the locking rod 2115, the abutment block 2116 and the knob 2117, on the one hand, the two plate bodies 2111 can be locked, and on the other hand, the limit block 2114 can be prevented from falling off. Among them, the locking rod 2115 can be a screw rod 2123. The knob 2117 can adopt an existing nut. Anti-skid patterns can be set on the outer circumference of the knob 2117 to increase friction so as to facilitate the rotation of the knob 2117.

[0054] During assembly, the limit block 2114 is inserted into the two disk bodies 2111 so that the mounting holes on the two disk bodies 2111 are aligned. After installing each elbow 2112, the locking rod 2115 is inserted into the limit block 2114, and the abutment blocks 2116 are inserted into both ends of the locking rod 2115 and screwed with the knob 2117. By turning the knob 2117, the abutment blocks 2116 are gradually pressed against the disk body 2111. The sleeve 2121 of the connecting arm 212 is sleeved on the corresponding elbow 2112, and the two semi-ring plates 2113 are buckled on the outer periphery of the elbow 2112, so that the sleeve 2121 is sandwiched between the elbow 2112 and the semi-ring plate 2113, and the two semi-ring plates 2113 are locked by bolts and nuts.

[0055] The abutment block 2116 may be U-shaped, and both ends of the abutment block 2116 abut against the disk body 2111. A limiting groove may be provided at a position corresponding to the abutment block 2116 on the disk body 2111, and the end of the abutment block 2116 is inserted into the limiting groove to further play a limiting role.

[0056] The support column 221 is a hollow structure, which is convenient for accommodating one end of the locking rod 2115 and the abutment block 2116 and the knob 2117 provided at one end of the locking rod 2115, so that the disk 2111 can abut against the surface of the support column 221. In some cases, depending on the length of the support column 10, the disk 2111 can be spaced apart from the surface of the support column 221.

[0057] In this embodiment, the hook arm 223 includes a first rotating member 2232, a hook member 2233 and a first locking member 2234. One end of the first rotating member 2232 is rotatably connected to the support column 221, and the other end of the first rotating member 2232 is inserted into the first insertion hole of the hook member 2233. The end of the hook member 2233 away from the first rotating member 2232 forms a hook portion 2231. The first locking member 2234 is threadedly connected to the hook member 2233 and abuts against the first rotating member 2232 to lock the first rotating member 2232 and the hook member 2233. By loosening the first locking member 2234, the length of the first rotating member 2232 inserted into the first insertion hole can be adjusted, and then the length of the hook arm 223 can be adjusted to adapt to different support columns 10.

[0058] Specifically, a first mounting seat 2211 is provided on the support column 221 , and one end of the first rotating member 2232 is rotatably connected to the first mounting seat 2211 , which may be a pin connection.

[0059] When the second connecting part 22 is connected to the supporting column 10, the first rotating member 2232 is rotated to drive the hook member 2233 connected thereto to rotate, so that the hook portion 2231 of the hook member 2233 avoids the flange 11 at the end of the supporting column 10, and the supporting column 221 of the second connecting part 22 is abutted against the flange 11, and then the first rotating member 2232 is rotated to drive the hook member 2233 connected thereto to rotate, so that the hook portion 2231 of the hook member 2233 is sleeved on the flange 11, and the first locking member 2234 is loosened, and the length of the first rotating member 2232 inserted into the first plug hole is adjusted, so that the hook portion 2231 of the hook member 2233 abuts against the flange 11, and the first locking member 2234 is tightened. At this time, the hook portion 2231 hooks the flange 11, so as to improve the stability of the connection between the supporting column 221 and the supporting column 10.

[0060] A plurality of support arms 224 are circumferentially spaced apart on the outer circumferential surface of the support column 221, and an adjustment arm 225 is provided corresponding to each support arm 224. One end of the support arm 224 is rotatably connected to the support column 221, and the other end of the support arm 224 is provided with a support head 226 capable of abutting against the foundation pit. One end of the adjustment arm 225 is rotatably connected to the support column 221, and the other end of the adjustment arm 225 is slidably connected to the support arm 224.

[0061] Specifically, the support column 221 is provided with a second mounting seat 2212, and one end of the support arm 224 is rotatably connected to the second mounting seat 2212, which may be a pin connection. The support column 221 is provided with a third mounting seat 2213, and one end of the adjustment arm 225 is rotatably connected to the third mounting seat 2213, which may be a pin connection.

[0062] The support head 226 has a support surface, which abuts against the inner wall of the foundation pit to achieve surface-to-surface contact and increase the contact area. The support surface is provided with a convex ridge 2261, which abuts against the inner wall of the foundation pit to increase the friction between the support head 226 and the inner wall of the foundation pit. The support head 226 is rotatably connected to the support arm 224, which facilitates the adjustment of the angle of the support head 226 so that the support head 226 can stably abut against the foundation pit.

[0063] The support head 226 is brought into contact with the foundation pit by rotating the support arm 224. During the rotation of the support arm 224, one end of the adjustment arm 225 rotates relative to the support column 221, and the other end of the adjustment arm 225 slides along the support arm 224, and the adjustment arm 225 supports the support arm 224.

[0064] The length of the adjustment arm 225 is adjustable, so as to provide a stable supporting force to the support arm 224. Specifically, the adjustment arm 225 includes a second rotating member 2251, an adjusting member 2252, and a second locking member 2253. One end of the second rotating member 2251 is rotatably connected to the support column 221, one end of the adjusting member 2252 is inserted into the second insertion hole of the second rotating member 2251, and the other end of the adjusting member 2252 is provided with a slider 227 slidably connected to the support arm 224. The second locking member 2253 is threadedly connected to the second rotating member 2251 and abuts against the adjusting member 2252 to lock the second rotating member 2251 and the adjusting member 2252.

[0065] The support arm 224 can be rotated when the second locking piece 2253 is loosened, so that the support head 226 abuts against the foundation pit. In the process of rotating the support arm 224, one end of the adjustment arm 225 rotates relative to the support column 221, and the slider 227 at the other end of the adjustment arm 225 slides along the support arm 224. The length of the adjustment arm 225 can be adjusted so that the slider 227 slides smoothly. After the support head 226 abuts against the foundation pit, the second locking piece 2253 is locked. The support column 221, the support arm 224 and the adjustment arm 225 form a triangular structure, making the support more stable. Specifically, a guide groove 2241 is provided on one side of the support arm 224, and the slider 227 slidably cooperates with the guide groove 2241. The slider 227 and the adjustment arm 225 can be rotatably connected.

[0066] As described above, the support plate 211 of the first connection part 21 is plugged into the positioning column 222 of the second connection part 22. During installation, the first connection part 21 can be installed as a whole to the positioning column 222, or the various sub-structures of the first connection part 21, such as the plate body 2111, the elbow 2112, the limit block 2114, the locking rod 2115, the semi-ring plate 2113, etc., can be assembled on site to the positioning column 222. Similarly, during disassembly, the first connection part 21 can be disassembled as a whole, or the various sub-structures of the first connection part 21 can be disassembled piece by piece.

[0067] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A detachable foundation pit support device, characterized in that: It comprises a plurality of support columns (10) and a plurality of connection assemblies (20), wherein the connection assemblies (20) comprise: A first connecting portion (21), comprising a supporting plate (211) and at least one connecting arm (212), wherein the supporting plate (211) is provided with a plug hole (2110) along a first direction, the connecting arm (212) is provided on an outer peripheral surface of the supporting plate (211) and is detachably connected to the supporting plate (211), and adjacent two connecting arms (212) in two adjacent groups of the connecting assemblies (20) are detachably connected via a first fastener; The second connection part (22) comprises a support column (221), a positioning column (222) and a plurality of hooking arms (223), wherein the positioning column (222) is arranged at one end of the support column (221) and plugged into the plug hole (2110), and the plurality of hooking arms (223) are arranged at the other end of the support column (221) and are arranged at intervals around the outer circumference of the support column (221), one end of the hooking arm (223) is rotatably connected to the support column (221), and the other end of the hooking arm (223) forms a hooking part (2231) for hooking the flange (11) at the end of the support column (10); In the connection assembly (20), one second connection portion (22) is provided and is located on one side of the support plate (211); or two second connection portions (22) are provided and are evenly distributed on both sides of the support plate (211).

2. The detachable foundation pit supporting device according to claim 1 is characterized in that: The support plate (211) comprises two plate bodies (2111) abutting against each other along the first direction and a plurality of elbows (2112) arranged at intervals around the outer circumference of the plate bodies (2111); the plug hole (2110) passes through the plate body (2111); the elbow (2112) is U-shaped; one end of the elbow (2112) is plugged into a mounting hole on the outer circumference of one of the plate bodies (2111); the other end of the elbow (2112) is plugged into a mounting hole on the outer circumference of another of the plate bodies (2111); and the connecting arm (212) is connected to the elbow (2112).

3. The detachable foundation pit supporting device according to claim 2 is characterized in that: The support plate (211) further comprises two semi-ring plates (2113), the two semi-ring plates (2113) being buckled together to form a receiving cavity, the plate body (2111) and the elbow (2112) being both arranged in the receiving cavity, the elbow (2112) being in contact with the inner wall of the semi-ring plate (2113), and the connecting arm (212) comprising a sleeve (2121), the sleeve (2121) being sleeved on the elbow (2112) and clamped between the elbow (2112) and the semi-ring plate (2113).

4. The detachable foundation pit supporting device according to claim 3 is characterized in that: The connecting arm (212) further comprises a supporting beam (2122), a screw rod (2123) and a mating buckle (2124); one end of the supporting beam (2122) is detachably connected to the sleeve (2121) via a second fastener (2125); the screw rod (2123) is threadedly connected to the other end of the supporting beam (2122); the mating buckle (2124) is arranged at an end of the screw rod (2123) away from the supporting beam (2122); the mating buckle (2124) is rotatably connected to the screw rod (2123); and the mating buckles (2124) in two adjacent connecting arms (212) in two adjacent groups of the connecting assemblies (20) are detachably connected via the first fastener.

5. The detachable foundation pit supporting device according to claim 4 is characterized in that: The support beam (2122) includes an outer sleeve (21221) and an inner sleeve (21222), one end of the outer sleeve (21221) is provided with two connecting rods (21223), the connecting rods (21223) are connected to the sleeve (2121) via the second fastener (2125), one end of the inner sleeve (21222) is inserted into the outer sleeve (21221) and connected to the outer sleeve (21221), and the other end of the inner sleeve (21222) is threadedly connected to the screw rod (2123).

6. The detachable foundation pit supporting device according to claim 2, characterized in that: The support plate (211) further comprises a limit block (2114); a limit cavity is provided on the plate body (2111); the limit block (2114) penetrates the limit cavities on the two plate bodies (2111) along the first direction to limit the rotation of the plate body (2111); the limit block (2114) is prism-shaped.

7. The detachable foundation pit supporting device according to claim 6 is characterized in that: The support plate (211) further comprises a locking rod (2115), a contact block (2116) and a knob (2117); the locking rod (2115) is inserted into the limit block (2114) along the first direction; both ends of the locking rod (2115) are sleeved with the contact blocks (2116); both ends of the locking rod (2115) are threadedly connected to the knob (2117); and the contact block (2116) is clamped between the knob (2117) and the plate body (2111).

8. The detachable foundation pit supporting device according to claim 1, characterized in that: The hook arm (223) includes a first rotating member (2232), a hook member (2233) and a first locking member (2234), one end of the first rotating member (2232) is rotatably connected to the support column (221), the other end of the first rotating member (2232) is inserted into the first insertion hole of the hook member (2233), and the end of the hook member (2233) away from the first rotating member (2232) forms the hook portion (2231), and the first locking member (2234) is threadedly connected to the hook member (2233) and abuts against the first rotating member (2232) to lock the first rotating member (2232) and the hook member (2233).

9. The detachable foundation pit supporting device according to any one of claims 1 to 8, characterized in that: A plurality of support arms (224) are arranged at circumferential intervals on the outer peripheral surface of the support column (221), and an adjustment arm (225) is arranged corresponding to each of the support arms (224); one end of the support arm (224) is rotatably connected to the support column (221), and the other end of the support arm (224) is provided with a support head (226) capable of abutting against the foundation pit; one end of the adjustment arm (225) is rotatably connected to the support column (221), and the other end of the adjustment arm (225) is slidably connected to the support arm (224).

10. The detachable foundation pit supporting device according to claim 9, characterized in that: The adjusting arm (225) comprises a second rotating member (2251), an adjusting member (2252) and a second locking member (2253); one end of the second rotating member (2251) is rotatably connected to the support column (221); one end of the adjusting member (2252) is inserted into the second insertion hole of the second rotating member (2251); the other end of the adjusting member (2252) is provided with a sliding block (227) slidably connected to the supporting arm (224); the second locking member (2253) is threadedly connected to the second rotating member (2251) and abuts against the adjusting member (2252) to lock the second rotating member (2251) and the adjusting member (2252).

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