Adjustable supporting device for subway cable foundation pit

Abstract

The utility model relates to the technical field of cable supporting, and provides a subway cable foundation pit adjustable supporting device which comprises a supporting mechanism, four supporting mechanisms are arranged on the outer side of the supporting mechanism in a sliding mode, the supporting mechanism comprises a bottom plate, four adjusting assemblies are fixedly installed at the upper end of the bottom plate, and an extrusion assembly is installed in the center of the bottom plate. The adjusting assembly comprises a hydraulic rod, a first U-shaped connecting block is fixedly installed at the upper end of the hydraulic rod, a connecting rod is rotatably installed in the first U-shaped connecting block, a second U-shaped connecting block is arranged at the end, away from the hydraulic rod, of the connecting rod, a first connecting piece is rotatably installed at the upper end of the hydraulic rod, and a pushing and pressing plate is rotatably installed in the first connecting piece. The position of the supporting mechanism is accurately adjusted according to stress borne by the supporting mechanism, stress and size changes of different parts of a foundation pit are effectively matched, an extrusion column and an extrusion plate of an extrusion assembly extrude a rubber damping ball under driving of a hydraulic rod, strong buffering is provided for movement of the supporting mechanism, and damage of impact force to the supporting mechanism and the wall of the foundation pit is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of cable support technology, and in particular to an adjustable support device for subway cable pits. Background Technology

[0002] With the continuous acceleration of urbanization, urban subway construction is also booming. In order to alleviate urban traffic congestion, more and more cities are beginning to vigorously develop subway networks, which has led to a continuous increase in the number of foundation pit projects in subway construction. In the construction of subway cable foundation pits, the stability and safety of the foundation pit are crucial. At the same time, due to the scarcity of urban land, buildings are constantly expanding into underground space, resulting in the scale of urban foundation pit excavation developing towards larger and deeper directions. During the foundation pit construction process, various factors may cause the foundation pit to be placed for too long or the surrounding conditions of the foundation pit to change, which may lead to excessive horizontal deformation of the foundation pit, far exceeding the limits given by the specifications, and easily causing safety accidents at the construction site.

[0003] A Chinese patent with publication number CN214738107U discloses a cable pit support device. Vertical steel plate supports are installed on both sides of the cable pit along its length. The upper end of the vertical steel plate supports is provided with a lifting hole. A support plate is fixed to the upper inner side of the vertical steel plate supports on both sides of the cable pit. The two ends of the horizontal steel plate supports are fixed to the support plates on both sides of the cable pit. The upper end surface of the horizontal steel plate supports is flush with the ground on both sides of the cable pit. The lifting holes are exposed on the ground on both sides of the cable pit. In this embodiment, each vertical steel plate support has two lifting holes.

[0004] Regarding the aforementioned technologies, traditional support devices have fixed support structures, making it difficult to adapt to the stress and dimensional changes in different parts of the foundation pit, resulting in poor support performance. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes an adjustable support device for subway cable pits to solve the problem that the support structure of traditional support devices is fixed and it is difficult to match the stress and size changes of different parts of the pit, resulting in poor support effect.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an adjustable support device for subway cable pits, including a support mechanism, four sets of support mechanisms are slidably arranged on the outside of the support mechanism, the support mechanism includes a base plate, four sets of adjustment components are fixedly installed on the upper end of the base plate, and a compression component is installed in the center of the base plate. The support mechanism is placed in the subway cable pit to fix and maintain the horizontal deformation of the pit. The support degree of each set of support mechanisms is changed by adjusting the components, and the pressure experienced by the support mechanism when it is compressed is buffered by the compression component.

[0007] Preferably, the base plate has four sets of sliding grooves inside, and a connecting block is slidably installed inside each of the sliding grooves. The connecting block is rotatably connected to the support mechanism, and the compression component supports and buffers the support mechanism through the connecting block.

[0008] Preferably, the adjusting component includes a hydraulic rod, with a U-shaped connecting block 1 fixedly installed at the upper end of the hydraulic rod. A connecting rod is rotatably installed inside the U-shaped connecting block 1, and a U-shaped connecting block 2 is provided at the end of the connecting rod away from the hydraulic rod. The U-shaped connecting block 2 is fixedly connected to the extrusion component. A connecting piece 1 is also rotatably installed at the upper end of the hydraulic rod, and a push plate is rotatably installed inside the connecting piece 1. The push plate is rotatably connected to the support mechanism through the connecting piece 2. When the support mechanism is subjected to a certain stress, the pressure sensor between the support mechanism and the bottom plate receives pressure changes. When the pressure on one side of the support mechanism increases, the hydraulic rod is activated to move downward, causing the push plate to pull the support mechanism inward a certain distance. At the same time, the hydraulic rod moves downward, causing the extrusion component to move downward, thus providing protection and buffering for the support mechanism during movement. The support mechanism adapts to the stress and dimensional changes in different parts of the foundation pit, effectively improving the protection of the foundation pit.

[0009] Preferably, a rubber damping ball is fixedly installed at the center of the four sets of sliding grooves, and the four sets of connecting blocks are initially in contact with the rubber damping ball. The connecting blocks are rotatably connected to the support mechanism through the connecting piece three.

[0010] Preferably, the extrusion assembly includes an extrusion column, with a U-shaped connecting block fixedly installed at the upper end of the extrusion column and an extrusion plate fixedly installed at the lower end of the extrusion column. The extrusion plate is slidably connected to the base plate and contacts a rubber damping ball. As the hydraulic rod moves downward, it drives the extrusion column and the extrusion plate to move downward and extrude the rubber damping ball, thereby increasing the tightness of the contact between the rubber damping ball and the connecting block. This increases the buffering force of the connecting block when it is extruded inward, providing effective protection and buffering when the support mechanism moves inward.

[0011] Preferably, the support mechanism includes a support plate, a connector three is fixedly installed on the side of the support plate near the connecting block, the connector three is rotatably connected to the connecting block, a pressure sensor is provided between the connector three and the support plate, an L-shaped connecting plate is slidably installed on the upper end of the support plate, an elastic element is fixedly installed on the lower end of the L-shaped connecting plate, the elastic element is fixedly connected to the support plate, two sets of handles are fixedly installed on the upper end of the L-shaped connecting plate, and a fixing cone is fixedly installed on the inner side of the L-shaped connecting plate. When using the support device, the bottom plate is placed in the foundation pit, the L-shaped connecting plate is pulled to contact the soil outside the foundation pit, and the fixing cone is used to tightly fit the L-shaped connecting plate with the soil. At the same time, the support plate is tightly attached to the inner wall of the foundation pit to support the foundation pit.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model proposes an adjustable support device for subway cable foundation pits. The base plate of the support mechanism is solid and stable, providing a reliable bearing foundation for the entire device. The cooperation of the internal sliding groove and connecting block ingeniously realizes the flexible sliding of the support mechanism. The hydraulic rod, various connecting blocks and push plate in the adjustment component work together to accurately adjust the position of the support mechanism according to the stress it receives, effectively matching the stress and size changes of different parts of the foundation pit. The extrusion column and extrusion plate of the extrusion component extrude rubber damping balls under the drive of the hydraulic rod, providing a strong buffer for the movement of the support mechanism and greatly reducing the impact force on the support structure and foundation pit wall. The support plate of the support mechanism directly supports the foundation pit wall, and the L-shaped connecting plate and fixed cone enhance the connection with the soil outside the foundation pit, improving the overall stability. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0015] Figure 1 The schematic diagram illustrates the overall structure according to one embodiment of the present invention. Figure 1 ;

[0016] Figure 2 The schematic diagram illustrates the overall structure according to one embodiment of the present invention. Figure 2 ;

[0017] Figure 3 The schematic diagram shows a partial structural diagram of the support mechanism and the backing mechanism according to one embodiment of the present invention;

[0018] Figure 4 The schematic diagram shows a connecting block and rubber damping ball structure according to one embodiment of the present invention;

[0019] Figure 5 The schematic diagram shows a support mechanism structure according to one embodiment of the present invention;

[0020] Figure 6 The diagram schematically shows the internal structure of a support mechanism according to one embodiment of the present invention.

[0021] The diagram is labeled as follows: 1. Support mechanism; 11. Base plate; 111. Slide groove; 112. Connecting block; 12. Adjusting component; 121. Hydraulic rod; 1211. U-shaped connecting block one; 1212. U-shaped connecting block two; 122. Connecting rod; 123. Connector one; 124. Push plate; 125. Connector two; 13. Extrusion component; 131. Extrusion column; 132. Extrusion plate; 133. Rubber damping ball; 2. Support mechanism; 21. Support plate; 211. Connector three; 212. Elastic element; 22. L-shaped connecting plate; 221. Handle; 222. Fixed cone. Detailed Implementation

[0022] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0023] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0024] According to one embodiment of the present invention, in conjunction with Figure 1-2 The diagram shows an adjustable support device for a subway cable pit, comprising a support mechanism 1, four sets of support mechanisms 2 slidably disposed on the outer side of the support mechanism 1, the support mechanism 1 including a base plate 11, four sets of adjustment components 12 fixedly installed on the upper end of the base plate 11, and a compression component 13 installed in the center of the base plate 11. The support mechanism 1 is placed in the subway cable pit to fix and maintain the horizontal deformation of the pit. The support degree of each set of support mechanisms 2 is changed by adjusting the components 12, and the pressure experienced by the support mechanism 2 when it is compressed is buffered by the compression component 13.

[0025] Combination Figure 3-4 As shown, the base plate 11 has four sets of sliding grooves 111 inside, and each sliding groove 111 has a connecting block 112 slidably installed inside. The connecting block 112 is rotatably connected to the support mechanism 2, and the compression component 13 supports and buffers the support mechanism 2 through the connecting block 112.

[0026] Combination Figure 3-5As shown, the adjusting assembly 12 includes a hydraulic rod 121. A U-shaped connecting block 1211 is fixedly installed on the upper end of the hydraulic rod 121. A connecting rod 122 is rotatably installed inside the U-shaped connecting block 1211. A U-shaped connecting block 1212 is provided at the end of the connecting rod 122 away from the hydraulic rod 121. The U-shaped connecting block 1212 is fixedly connected to the pressing assembly 13. A connecting piece 123 is also rotatably installed on the upper end of the hydraulic rod 121. A pressing plate 124 is rotatably installed inside the connecting piece 123. The pressing plate 124 is rotatably connected to the support mechanism 2 through the connecting piece 125. 124 is rotatably connected to connector 125. When the support mechanism 2 is subjected to a certain stress, the pressure sensor between the support mechanism 2 and the base plate 11 is subjected to pressure changes. When the pressure on one side of the support mechanism 2 increases, the hydraulic rod 121 is activated to move downward, driving the push plate 124 to pull the support mechanism 2 inward to retract a certain distance. At the same time, the hydraulic rod 121 moves downward, driving the extrusion assembly 13 to move downward, providing protection and buffering for the support mechanism 2 during movement. The support mechanism 2 adapts to the stress and size changes in different parts of the foundation pit, effectively improving the protection of the foundation pit.

[0027] Combination Figure 3-4 As shown, rubber damping balls 133 are fixedly installed at the center of the four sets of sliding grooves 111. The four sets of connecting blocks 112 are initially in contact with the rubber damping balls 133. The connecting blocks 112 are rotatably connected to the support mechanism 2 through the connecting piece 211.

[0028] Combination Figure 3 As shown, the extrusion assembly 13 includes an extrusion column 131, with a U-shaped connecting block 1212 fixedly installed at the upper end of the extrusion column 131 and an extrusion plate 132 fixedly installed at the lower end of the extrusion column 131. The extrusion plate 132 is slidably connected to the base plate 11 and contacts the rubber damping ball 133. As the hydraulic rod 121 moves downward, it drives the extrusion column 131 and the extrusion plate 132 to move downward and extrude the rubber damping ball 133. This increases the tightness of the contact between the rubber damping ball 133 and the connecting block 112, thereby increasing the buffering force of the connecting block 112 when it is extruded inward, and providing effective protection and buffering when the support mechanism 2 moves inward.

[0029] Combination Figure 1-2 , Figure 5-6As shown, the support mechanism 2 includes a support plate 21. A connector 211 is fixedly installed on the side of the support plate 21 near the connecting block 112. The connector 211 is rotatably connected to the connecting block 112. A pressure sensor is provided between the connector 211 and the support plate 21. An L-shaped connecting plate 22 is slidably installed on the upper end of the support plate 21. An elastic element 212 is fixedly installed on the lower end of the L-shaped connecting plate 22. The elastic element 212 is fixedly connected to the support plate 21. Two sets of handles 221 are fixedly installed on the upper end of the L-shaped connecting plate 22. A fixing cone 222 is fixedly installed on the inner side of the L-shaped connecting plate 22. When using the support device, the base plate 11 is placed into the pit, and the L-shaped connecting plate 22 is pulled to contact the soil outside the pit. The fixing cone 222 tightly fits the L-shaped connecting plate 22 with the soil. At the same time, the support plate 21 is pressed tightly against the inner wall of the pit to support the pit.

[0030] In this embodiment, when the adjustable support device for the subway cable pit is working, the base plate 11 of the support mechanism 1 is placed into the pit, and the L-shaped connecting plate 22 of the support mechanism 2 is pulled to make it fit tightly against the soil outside the pit through the fixing cone 222. The support plate 21 is tightly attached to the inner wall of the pit. When the support mechanism 2 is subjected to stress changes, the pressure sensor detects that if the pressure of the support mechanism 2 on a certain side increases, the hydraulic rod 121 of the adjustment component 12 is activated to move downward, driving the push plate 124 to pull the support mechanism 2 to contract inward. At the same time, the hydraulic rod 121 drives the extrusion column 131 and extrusion plate 132 of the extrusion component 13 to move downward, extruding the rubber damping ball 133, increasing the buffering force of the connecting block 112, and protecting and buffering the movement of the support mechanism 2, thereby adapting to the stress and size changes of different parts of the pit.

[0031] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A subway cable foundation pit adjustable supporting device, characterized in that: Including support mechanism, the outside of support mechanism is provided with four groups of support mechanism, the support mechanism includes bottom plate, four groups of adjusting assembly are fixedly installed on the upper end of bottom plate, extrusion assembly is installed at the center of bottom plate; The adjusting assembly includes hydraulic rod, the upper end of hydraulic rod is fixedly installed with U-shaped connecting block one, the inside of U-shaped connecting block one is rotatably installed with connecting rod, the end away from the hydraulic rod of connecting rod is provided with U-shaped connecting block two, U-shaped connecting block two is fixedly connected with extrusion assembly, the upper end of hydraulic rod is rotatably installed with connecting piece one, the inside of connecting piece one is rotatably installed with push plate, connecting piece two is arranged between push plate and support mechanism, push plate is rotatably connected with connecting piece two.

2. The subway cable foundation adjustable support device according to claim 1, characterized in that: The inside of bottom plate is provided with four groups of sliding grooves, the inside of sliding groove is slidably installed with connecting block, the connecting block is rotatably connected with the support mechanism.

3. The adjustable support device for a subway cable foundation pit according to claim 2, characterized in that: The center of four groups of sliding grooves is fixedly installed with rubber damping ball, four groups of connecting block are in contact with rubber damping ball under initial condition.

4. The adjustable support device for a subway cable foundation pit according to claim 3, characterized in that: The extrusion assembly includes extrusion column, the upper end of extrusion column is fixedly installed with U-shaped connecting block two, the lower end of extrusion column is fixedly installed with extrusion plate, the extrusion plate is slidably connected with the bottom plate, the extrusion plate is in contact with the rubber damping ball.

5. The subway cable foundation adjustable support device according to claim 1, characterized in that: The support mechanism includes support plate, connecting piece three is fixedly installed on the side close to the connecting block of support plate, connecting piece three is rotatably connected with the connecting block, pressure sensor is arranged between connecting piece three and support plate, L-shaped connecting plate is slidably installed on the upper end of support plate, elastic element is fixedly installed on the lower end of L-shaped connecting plate, elastic element is fixedly connected with the support plate.

6. The subway cable foundation adjustable support device according to claim 5, characterized in that: The upper end of L-shaped connecting plate is fixedly installed with two groups of handles, the inside of L-shaped connecting plate is fixedly installed with fixed cone.

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