Long and narrow deep foundation pit supporting structure

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a long and narrow deep foundation pit supporting structure which comprises a supporting plate and a supporting rod. The two supporting plates are arranged on the two sides of a foundation pit correspondingly. The number of the supporting rods is at least one, the supporting rods are located between the two supporting plates, one end of each supporting rod is hinged to one supporting plate, and the other end of each supporting rod is detachably connected with the other supporting plate. The foundation pit of the rain sewage pipe network can be conveniently supported.

Description

Technical Field

[0001] This application relates to the technical field of construction engineering, and particularly to a support structure for a narrow and deep foundation pit. Background Art

[0002] When laying road rainwater and sewage pipe networks, it is necessary to first excavate a narrow and long foundation pit on the road surface, and then construction workers carry out operations in the foundation pit. To prevent the foundation pit from collapsing or the like, it is necessary to support the excavated foundation pit.

[0003] Currently, when supporting the foundation pit of a rainwater and sewage pipe network, generally multiple support plates are laid in the length direction of the foundation pit, and then horizontally arranged support pipe columns are used to support the support plates on both sides of the foundation pit.

[0004] When supporting the foundation pit of a rainwater and sewage pipe network as described above, after the support plates are installed, construction workers need to connect the two ends of the support pipe columns to the support plates using bolts. Since the foundation pit of a rainwater and sewage pipe network is narrow and long, multiple support pipe columns need to be installed, and the installation operation is time-consuming and laborious, causing inconvenience to the support of the foundation pit of a rainwater and sewage pipe network. Utility Model Content

[0005] In order to facilitate the support of the foundation pit of a rainwater and sewage pipe network, this application provides a support structure for a narrow and deep foundation pit.

[0006] A support structure for a narrow and deep foundation pit provided by this application adopts the following technical solution:

[0007] A support structure for a narrow and deep foundation pit includes support plates and support rods; there are two support plates, which are respectively arranged on both sides of the foundation pit; there is at least one support rod, the support rod is located between the two support plates, one end of the support rod is hinged to one of the support plates, and the other end is detachably connected to the other support plate.

[0008] By adopting the above technical solution, when supporting the foundation pit of a rainwater and sewage pipe network, the operator places the two support plates on both sides of the foundation pit respectively. Since one end of the support rod is hinged to one of the support plates, the operator only needs to rotate the support rod to support it between the two support plates and fix one end of the support rod to the other support plate to complete the installation of the support rod. When disassembling the support rod, only one end of the support rod needs to be disassembled from the support plate, and it is not necessary to disassemble and assemble both ends of the support rod, which simplifies the disassembly and installation steps of the support rod, thereby facilitating the support of the foundation pit of a rainwater and sewage pipe network.

[0009] Optionally, the support rod includes a sliding cylinder and a piston rod; one end of the sliding cylinder is hinged to one of the support plates; the piston rod is coaxially arranged on the sliding cylinder, one end of the piston rod is located inside the sliding cylinder and is slidably connected to the sliding cylinder, and the other end is detachably connected to the other support plate; an adjusting component is arranged on the sliding cylinder, and the adjusting component is used to adjust the relative state of the sliding cylinder and the piston rod.

[0010] By adopting the above technical solution, a telescopic support rod is formed by using the sliding cylinder and the piston rod. When facing foundation pits with different construction sizes, the operator can relatively slide the piston rod and the sliding cylinder to adjust the length of the support rod, and then use the adjusting component to relatively fix the sliding cylinder and the piston rod. Thus, when facing foundation pits with different widths, there is no need to replace the support rod, and the support rod can also ensure the supporting effect on the support plate, improving the adaptability to foundation pits under different working conditions, and thus facilitating the support of the rain and sewage pipe network foundation pit.

[0011] Optionally, a fitting groove is formed on the support plate; one end of the piston rod away from the sliding cylinder is adapted to the fitting groove; a first fixing groove is formed on the piston rod; a second fixing groove is formed on the support plate, and the second fixing groove communicates with the fitting groove; a fixing pin is arranged on the support plate, and both the first fixing groove and the second fixing groove are adapted to the fixing pin.

[0012] By adopting the above technical solution, when fixedly installing the support rod and the support plate, the operator slides the piston rod relative to the sliding cylinder, makes the end of the piston rod away from the sliding cylinder pass through and abut against the bottom of the fitting groove, and then the operator inserts the fixing pin into the first fixing groove and the second fixing groove. Under the action of the fixing pin, the piston rod is fixed to the support plate, thus completing the fixed installation of the support rod and the support plate, and the installation operation is simple and convenient.

[0013] Optionally, an external thread is arranged on the fixing pin; an internal thread is arranged in the second fixing groove, and the external thread on the fixing pin is adapted to the internal thread in the second fixing groove.

[0014] By adopting the above technical solution, after the fixing pin is inserted into the first fixing groove and the second fixing groove, the fixing pin is fixed to the support plate by using the thread, thus ensuring the reliability of the fixing of the piston rod and the support plate by the fixing pin.

[0015] Optionally, a limiting groove is formed on the inner side wall of the sliding cylinder; a limiting block is fixedly arranged on the piston rod, and the limiting block is slidably arranged in the limiting groove.

[0016] By adopting the above technical solution, the limiting block and the limiting groove are used to ensure that only relative sliding can occur between the piston rod and the sliding cylinder, and relative rotation cannot occur, so as to ensure that when the end of the piston rod far from the sliding cylinder is located in the fitting groove, the first fixing groove and the second fixing groove are in a coaxial and facing state, facilitating the operator to insert the fixing pin into the first fixing groove and the second fixing groove.

[0017] Optionally, the piston rod divides the interior of the sliding cylinder into a first cavity and a second cavity; the adjusting assembly includes a liquid injection pipe and an end cap; the liquid injection pipe is fixedly arranged on the sliding cylinder and communicates with the first cavity; the end cap is adapted to the liquid injection pipe, and the end cap is detachably connected to the liquid injection pipe.

[0018] By adopting the above technical solution, after the piston rod is fixed to the support plate, the operator injects oil into the first cavity through the liquid injection pipe to fill the first cavity with oil, and then fixedly covers the end cap on the liquid injection pipe. The oil in the first cavity will support the sliding cylinder and the piston rod, so that the sliding cylinder and the piston rod remain relatively fixed.

[0019] Optionally, the sliding cylinder is provided with a vent hole, and the vent hole communicates with the second cavity.

[0020] By adopting the above technical solution, by providing the vent hole, when the piston rod slides relative to the sliding cylinder, it will not be affected by the air pressure in the second cavity.

[0021] Optionally, the support plate is provided with a placement groove, and the placement groove is adapted to the support rod.

[0022] By adopting the above technical solution, when transporting the support plate, the support rod can be rotated into the placement groove, facilitating the operator to stack and transport the support plate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By hinging the support rod to one of the support plates, when supporting the rain and sewage pipe network foundation pit, the operator only needs to rotate the support rod to support it between the two support plates and fix one end of the support rod to the other support plate to complete the installation of the support rod. When disassembling the support rod, only one end of the support rod needs to be disassembled from the support plate, without having to disassemble and assemble both ends of the support rod, simplifying the disassembly and installation steps of the support rod, thus facilitating the support of the rain and sewage pipe network foundation pit;

[0025] 2. A telescopic support rod is formed by a sliding cylinder and a piston rod. When facing foundation pits with different construction sizes, the operator can relatively slide the piston rod and the sliding cylinder to adjust the length of the support rod, and then use the adjustment component to relatively fix the sliding cylinder and the piston rod. Thus, when facing foundation pits with different widths, there is no need to replace the support rod, and the support rod can also ensure the supporting effect on the support plate, improving the adaptability to foundation pits under different working conditions, and thus facilitating the support of the rain and sewage pipe network foundation pit.

[0026] 3. By providing a placement groove, when transporting the support plate, the support rod can rotate into the placement groove, thus facilitating the operator to stack and transport the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0028] Figure 2 is a cross-sectional view of an embodiment of the present application for showing the placement groove;

[0029] Figure 3 is a cross-sectional view of an embodiment of the present application for showing the fixing pin;

[0030] Figure 4 is Figure 3 a partial enlarged view of A in

[0031] Figure 5 is Figure 3 a partial enlarged view of B in

[0032] Figure 6 is Figure 3 a partial enlarged view of C in

[0033] DESCRIPTION OF REFERENCE NUMERALS:

[0034] 1, support plate; 11, mating groove; 12, second fixing groove; 13, fixing pin; 14, placement groove;

[0035] 2, support rod; 21, sliding cylinder; 211, limiting groove; 212, first cavity; 213, second cavity; 214, ventilation hole; 22, piston rod; 221, first fixing groove; 222, limiting block;

[0036] 3, adjustment component; 31, liquid injection pipe; 32, end cap. DETAILED DESCRIPTION

[0037] The following is a further detailed description of the present application in conjunction with the attached Figures 1-6 drawings.

[0038] An embodiment of the present application discloses a support structure for a narrow and deep foundation pit. Refer to Figure 1, the narrow and deep foundation pit support structure includes a support plate 1 and a support rod 2. There are two support plates 1, which are respectively arranged on both sides of the foundation pit and are in contact with the side wall of the foundation pit. There are two support rods 2, which are both horizontally arranged between the two support plates 1.

[0039] Refer to Figure 1 and Figure 2 , a placement groove 14 is formed on the support plate 1. The placement groove 14 is horizontally arranged and is used for placing the support rod 2.

[0040] The support rod 2 includes a sliding cylinder 21 and a piston rod 22. The sliding cylinder 21 is horizontally arranged. One end of the sliding cylinder 21 is located in the placement groove 14 on one of the support plates 1 and is hinged to the support plate 1. The hinge axis is vertically arranged. The piston rod 22 is coaxially arranged with the sliding cylinder 21. The piston rod 22 penetrates through the sliding cylinder 21. One end of the piston rod 22 is located inside the sliding cylinder 21 and is slidably connected to the sliding cylinder 21.

[0041] Refer to Figure 3 and Figure 4 , a mating groove 11 is formed on the support plate 1. The mating groove 11 is adapted to the end of the piston rod 22 away from the sliding cylinder 21. A first fixing groove 221 is formed at the end of the piston rod 22 away from the sliding cylinder 21. The length direction of the first fixing groove 221 is perpendicular to the length direction of the piston rod 22. A second fixing groove 12 is vertically formed on the support plate 1. The bottom of the second fixing groove 12 communicates with the mating groove 11. An internal thread is provided on the inner wall top of the second fixing groove 12. A fixing pin 13 is arranged on the support plate 1. The fixing pin 13 is adapted to both the first fixing groove 221 and the second fixing groove 12. An external thread is provided on the fixing pin 13. The external thread on the fixing pin 13 is adapted to the internal thread in the second fixing groove 12.

[0042] Refer to Figure 3 and Figure 5 , a limiting groove 211 is formed on the inner side wall of the sliding cylinder 21. The length direction of the limiting groove 211 is parallel to the length direction of the sliding cylinder 21. A limiting block 222 is fixedly arranged at the end of the piston rod 22 located inside the sliding cylinder 21. The limiting block 222 is adapted to the limiting groove 211. The limiting block 222 is located in the sliding groove and is slidably connected to the sliding cylinder 21. The sliding axis is consistent with the length direction of the limiting groove 211.

[0043] The piston rod 22 divides the inside of the sliding cylinder 21 into a first cavity 212 and a second cavity 213. The first cavity 212 is located on the side of the piston rod 22 close to the hinge of the sliding cylinder 21 and the support plate 1. The second cavity 213 is located on the side of the piston rod 22 away from the hinge of the sliding cylinder 21 and the support plate 1. A ventilation hole 214 is formed on the sliding cylinder 21. The ventilation hole 214 communicates with the second cavity 213.

[0044] Refer to Figure 3 andFigure 6 On the sliding cylinder 21, an adjusting assembly 3 is provided. The adjusting assembly 3 includes a liquid injection pipe 31 and an end cap 32. The liquid injection pipe 31 is fixedly arranged on the sliding cylinder 21. The axis of the liquid injection pipe 31 is perpendicular to the axis of the sliding cylinder 21. The liquid injection pipe 31 communicates with the first cavity 212. One end of the liquid injection pipe 31 away from the sliding cylinder 21 is provided with an external thread. The end cap 32 is adapted to the liquid injection pipe 31. The end cap 32 is provided with an internal thread, and the internal thread on the end cap 32 is adapted to the external thread on the liquid injection pipe 31. The end cap 32 and the liquid injection pipe 31 are detachably connected by threads.

[0045] It should be noted that the liquid injection pipe 31 and the end cap 32 can also be rotatably placed in the placement groove 14.

[0046] The implementation principle of a support structure for a narrow and deep foundation pit in an embodiment of the present application is as follows:

[0047] When supporting the foundation pit of the rain and sewage pipe network, the operator sets the same number of support plates 1 on the two side walls of the foundation pit according to the length and depth of the foundation pit. Since one end of the support rod 2 is hinged to the support plate 1 on one side, the operator only needs to fixedly connect the other end of the support rod 2 to the support plate 1 on the other side, reducing the installation steps of the support rod 2.

[0048] When fixedly installing the other end of the support rod 2 to the support plate 1, the operator inserts the end of the piston rod 22 away from the sliding cylinder 21 into the fitting groove 11 and makes the piston rod 22 abut against the bottom of the fitting groove 11. Under the action of the limit block 222 and the limit groove 211, the piston rod 22 can only slide relative to the sliding cylinder 21 and will not rotate relatively. Therefore, when the piston rod 22 abuts against the bottom of the fitting groove 11, the first fixing groove 221 remains vertical and is coaxially and oppositely arranged with the second fixing groove 12. Then the operator inserts the bottom end of the fixing pin 13 into the first fixing groove 221 and the second fixing groove 12, and finally fixes the fixing pin 13 to the support plate 1 by threads, thereby fixing the end of the piston rod 22 away from the sliding cylinder 21 to the support plate 1 and completing the fixed installation of the support rod 2 and the support plate 1.

[0049] After the support rod 2 and the support plate 1 are fixedly installed, the operator removes the end cap 32 from the liquid injection pipe 31 by threads, then externally connects an oil injection pipe to the liquid injection pipe 31 by threads, and injects hydraulic oil into the first cavity 212 through an oil pump until the first cavity 212 is filled with oil. Finally, the oil injection pipe is removed by threads, and then the end cap 32 is fixed on the liquid injection pipe 31. The oil in the first cavity 212 supports the sliding cylinder 21 and the piston rod 22, thereby supporting the support plates 1 on both sides. The air holes 214 on the sliding cylinder 21 can prevent the air pressure in the second cavity 213 from affecting the sliding of the piston rod 22 in the sliding cylinder 21.

[0050] When the construction of the rain and sewage pipe network is completed and the support rod 2 needs to be disassembled, the operator removes the fixing pin 13 from the first fixing groove 221 and the second fixing groove 12 through the thread, and then removes the end cover 32 by using the thread. At this time, the piston rod 22 is in a movable state. The operator slides the piston rod 22 in the direction close to the sliding cylinder 21, so that the piston rod 22 is away from the mating groove 11. At the same time, the oil in the first cavity 212 is discharged through the liquid injection pipe 31, and the operator collects the oil for reuse, completing the disassembly of the support rod 2 and the support plate 1.

[0051] After the support rod 2 is disassembled, the operator rotates and places the support rod 2 in the placement groove 14, so as to facilitate the stacking and transportation of the support plate 1.

[0052] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A narrow and deep foundation pit support structure, characterized in that: The invention comprises a supporting plate (1) and a supporting rod (2); two supporting plates (1) are provided and are respectively arranged on both sides of the foundation pit; at least one supporting rod (2) is provided, and the supporting rod (2) is located between the two supporting plates (1); one end of the supporting rod (2) is hinged to one of the supporting plates (1), and the other end is detachably connected to the other supporting plate (1).

2. The narrow and deep foundation pit support structure according to claim 1 is characterized in that: The support rod (2) comprises a slide cylinder (21) and a piston rod (22); one end of the slide cylinder (21) is hinged to one of the support plates (1); the piston rod (22) is coaxially inserted into the slide cylinder (21), one end of the piston rod (22) is located in the slide cylinder (21) and is slidably connected to the slide cylinder (21), and the other end is detachably connected to the other support plate (1); an adjustment component (3) is provided on the slide cylinder (21), and the adjustment component (3) is used to adjust the relative state of the slide cylinder (21) and the piston rod (22).

3. The narrow and deep foundation pit support structure according to claim 2 is characterized in that: The support plate (1) is provided with a matching groove (11); one end of the piston rod (22) away from the slide cylinder (21) is matched with the matching groove (11); the piston rod (22) is provided with a first fixing groove (221); the support plate (1) is provided with a second fixing groove (12), and the second fixing groove (12) is connected with the matching groove (11); the support plate (1) is provided with a fixing pin (13), and the first fixing groove (221) and the second fixing groove (12) are both matched with the fixing pin (13).

4. The narrow and deep foundation pit support structure according to claim 3 is characterized in that: The fixing pin (13) is provided with an external thread; the second fixing groove (12) is provided with an internal thread, and the external thread on the fixing pin (13) is matched with the internal thread in the second fixing groove (12).

5. The narrow and deep foundation pit support structure according to claim 3 is characterized in that: A limiting groove (211) is provided on the inner side wall of the slide cylinder (21); a limiting block (222) is fixedly provided on the piston rod (22), and the limiting block (222) is slidably provided in the limiting groove (211).

6. The narrow and deep foundation pit support structure according to claim 2 is characterized in that: The piston rod (22) divides the interior of the slide cylinder (21) into a first cavity (212) and a second cavity (213); the regulating assembly (3) comprises an injection tube (31) and an end cover (32); the injection tube (31) is fixedly arranged on the slide cylinder (21) and communicates with the first cavity (212); the end cover (32) is adapted to the injection tube (31), and the end cover (32) and the injection tube (31) are detachably connected.

7. The narrow and deep foundation pit support structure according to claim 6 is characterized in that: The slide cylinder (21) is provided with an air hole (214), and the air hole (214) is in communication with the second cavity (213).

8. The narrow and deep foundation pit support structure according to claim 1 is characterized in that: The support plate (1) is provided with a placement groove (14), and the placement groove (14) is adapted to fit the support rod (2).

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