Foundation pit safety protection device for road engineering construction

Abstract

The utility model relates to the technical field of foundation pit safety protection, disclose a road engineering construction is with foundation pit safety protection device, including stand, the stand is provided with four, four stand is connected through adjustable connecting rod subassembly between, the bottom of stand is provided with the plug in the drill subassembly, adjustable connecting rod subassembly includes internal thread hole, threaded connecting rod no.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit safety protection technology, specifically a foundation pit safety protection device for road engineering construction. Background Technology

[0002] Road engineering mainly includes the following: road planning, road design, road construction, and road facility construction. When constructing municipal road projects, foundation pits are excavated. A foundation pit is a pit dug at the design location of the road construction foundation according to the base elevation and foundation plane dimensions. Foundation pit protection devices are the support, reinforcement and protection measures adopted for the side walls and surrounding environment of the foundation pit to protect the safety of the underground structure construction and the surrounding environment.

[0003] To improve material reuse and achieve energy conservation, most protective devices often use adjustable connecting rods to connect four positioning and support columns. These adjustable connecting rods are often telescopic rods (for example, a safety protection device for foundation pits in municipal road construction disclosed in Chinese patent CN119507727A). However, because the bottom of the foundation pit is soil rather than concrete, after the bottom of the column is nailed into the soil, it can only ensure that the column is vertical, but cannot ensure that the height between adjacent columns is the same. This will cause the telescopic rod to be subjected to significant radial force, which can cause the telescopic rod to get stuck. In severe cases, it can cause the telescopic rod to deform severely, thus losing its function of connecting adjacent columns. Utility Model Content

[0004] The purpose of this utility model is to provide a safety protection device for foundation pits in road engineering construction, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety protection device for foundation pits in road engineering construction, comprising four columns connected by an adjustable connecting rod assembly. Each column has a pin assembly at its bottom. The adjustable connecting rod assembly includes an internal threaded hole, a first threaded connecting rod, and a second threaded connecting rod. The internal threaded hole is located on the outer wall of the column, and multiple internal threaded holes are evenly distributed on the outer wall of the column. One end of the first threaded connecting rod is connected to the internal threaded hole on one column, and one end of the second threaded connecting rod is connected to the internal threaded hole on another column. The first and second threaded connecting rods are connected by an adjustable-spacing connector.

[0006] The adjustable spacing connector includes an upper sliding sleeve, a lower sliding sleeve, and a limiting nut. The upper sliding sleeve is slidably mounted on a threaded connecting rod one, and the lower sliding sleeve is slidably mounted on a threaded connecting rod two. The upper and lower sliding sleeves are connected by a spiral spacing adjustment component and guided by a guide component. The limiting nut is threadedly mounted on threaded connecting rod one and threaded connecting rod two, and restricts the upper and lower sliding sleeves to threaded connecting rod one and threaded connecting rod two.

[0007] Furthermore, the spiral spacing adjustment component includes a connecting bolt and an internal threaded sleeve. The connecting bolt is rotatably connected to the upper sliding sleeve, and the internal threaded sleeve is fixedly installed inside the lower sliding sleeve. The internal threaded sleeve is threaded onto the connecting bolt.

[0008] Furthermore, the guide component includes a guide sleeve and a sliding rod. The guide sleeve is fixedly installed inside the lower sliding sleeve, and the sliding rod is fixedly installed inside the upper sliding sleeve. The guide sleeve is slidably sleeved on the sliding rod.

[0009] Furthermore, the insertion assembly includes a connecting plate, which is welded to the outer wall of the column. A cylindrical tube is fixedly installed at the bottom of the connecting plate, and a conical head is fixedly installed at the bottom end of the cylindrical tube.

[0010] Furthermore, an internally threaded plate is fixedly installed inside the connecting plate, a frustum is slidably arranged inside the cylindrical tube, and a threaded rod is rotatably connected to the top of the frustum via a bearing. The internally threaded plate is threaded onto the threaded rod. An arc-shaped plate is movably arranged inside the cylindrical tube, and an extension head is fixedly installed on the outer side of the arc-shaped plate. The extension head extends out of a through groove on the cylindrical tube. The outer side of the frustum abuts against the inner side of the arc-shaped plate. An elastic metal sheet is fixedly installed on the outer side of the arc-shaped plate, and the top of the elastic metal sheet is connected to the inner wall of the cylindrical tube. A throttle handle is fixedly installed on the top of the threaded rod.

[0011] Furthermore, a connecting seat is fixedly installed at the top of the column, a lifting ring is fixedly installed at the top of the connecting seat, a hammering plate is fixedly installed at the top of the lifting ring, and an oil felt pad is laid on the top of the hammering plate.

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

[0013] By adjusting the spacing between the upper and lower sliding sleeves using a spiral-type spacing adjuster, the upper sliding sleeve can be fitted onto the threaded connecting rod one while the lower sliding sleeve is simultaneously fitted onto the threaded connecting rod two. Then, by tightening the upper and lower sliding sleeves with the limit nut, the connection between the threaded connecting rod one and the threaded connecting rod two can be achieved. This avoids the problem of being unable to connect the threaded connecting rod one and the threaded connecting rod two due to vertical or horizontal misalignment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a structural schematic diagram of the threaded connecting rod one, the threaded connecting rod two, and the adjustable spacing connector of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the insertion assembly of this utility model.

[0017] Figure 4 This is a structural schematic diagram of the front sectional view of the insertion assembly of this utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the connecting seat, lifting ring, hammer plate and oil felt pad of this utility model.

[0019] In the diagram: 1. Column; 2. Adjustable connecting rod assembly; 201. Internal threaded hole; 202. Threaded connecting rod one; 203. Threaded connecting rod two; 3. Insertion rod assembly; 301. Connecting plate; 302. Cylindrical tube; 303. Conical head; 304. Internal threaded plate; 305. Threaded rod; 306. Frustum; 307. Arc plate; 308. Extension head; 309. Elastic metal sheet; 4. Adjustable spacing connector; 401. Upper sliding sleeve; 402. Lower sliding sleeve; 403. Limiting nut; 404. Spiral spacing adjuster; 405. Guide component; 4041. Connecting bolt; 4042. Internal threaded sleeve; 4051. Guide sleeve; 4052. Sliding rod; 5. Turning handle; 6. Connecting seat; 7. Lifting ring; 8. Hammering plate; 9. Oil felt pad. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1-5This utility model provides a technical solution: a safety protection device for foundation pits in road construction projects, including four columns 1 connected by an adjustable connecting rod assembly 2. A pin assembly 3 is provided at the bottom of each column 1. The adjustable connecting rod assembly 2 includes an internal threaded hole 201, a first threaded connecting rod 202, and a second threaded connecting rod 203. Multiple internal threaded holes 201 are provided on the outer wall of the column 1 and are evenly distributed on the outer wall of the column 1. On the wall, one end of threaded connecting rod 202 is connected to an internal threaded hole 201 on a column 1, and one end of threaded connecting rod 203 is connected to an internal threaded hole 201 on another column 1. Threaded connecting rod 202 and threaded connecting rod 203 are connected by a spacing adjustable connector 4. Threaded connecting rod 202 and threaded connecting rod 203 are installed on the column 1 using the internal threaded hole 201, so that threaded connecting rod 202 and threaded connecting rod 203 can be disassembled and assembled as needed.

[0022] The adjustable-gap connector 4 includes an upper sliding sleeve 401, a lower sliding sleeve 402, and a limiting nut 403. The upper sliding sleeve 401 is slidably fitted onto the first threaded connecting rod 202, and the lower sliding sleeve 402 is slidably fitted onto the second threaded connecting rod 203. The upper sliding sleeve 401 and the lower sliding sleeve 402 are connected by a spiral-type gap adjusting component 404 and guided by a guide component 405. The limiting nut 403 is threadedly fitted onto the first threaded connecting rod 202 and the second threaded connecting rod 203, and restricts the upper sliding sleeve 401 and the lower sliding sleeve 402 onto the first threaded connecting rod 202 and the second threaded connecting rod 203. Because the upper sliding sleeve 401 and the lower sliding sleeve 402 are respectively fitted onto the first threaded connecting rod 202 and the second threaded connecting rod 203, rotating the first threaded connecting rod 202 and the second threaded connecting rod 203 will adjust the thread... When connecting rod 1 202 and threaded connecting rod 203 are connected to column 1, they will not affect the adjustable spacing connector 4. After the positions of threaded connecting rod 1 202 and threaded connecting rod 203 are fixed, the spacing of upper sliding sleeve 401 and lower sliding sleeve 402 can be adjusted by using the spiral spacing adjustment component 404. At the same time, the lower sliding sleeve 402 can be fitted onto threaded connecting rod 203 while the upper sliding sleeve 401 is fitted onto threaded connecting rod 1 202. Then, the upper sliding sleeve 401 and lower sliding sleeve 402 can be limited by tightening the upper limit nut 403. This will achieve the connection of threaded connecting rod 1 202 and threaded connecting rod 203. There will be no problem that the threaded connecting rod 1 202 and threaded connecting rod 203 cannot be connected together due to vertical or horizontal misalignment.

[0023] The spiral-type spacing adjustment component 404 includes a connecting bolt 4041 and an internal threaded sleeve 4042. The connecting bolt 4041 is rotatably connected to the upper sliding sleeve 401. The internal threaded sleeve 4042 is fixedly installed in the lower sliding sleeve 402. The internal threaded sleeve 4042 is threaded onto the connecting bolt 4041. By rotating the connecting bolt 4041, the internal threaded sleeve 4042 moves along the connecting bolt 4041, thereby driving the lower sliding sleeve 402 to move relative to the upper sliding sleeve 401, so as to achieve the purpose of adjusting the spacing between the upper sliding sleeve 401 and the lower sliding sleeve 402.

[0024] The guide component 405 includes a guide sleeve 4051 and a sliding rod 4052. The guide sleeve 4051 is fixedly installed inside the lower sliding sleeve 402, and the sliding rod 4052 is fixedly installed inside the upper sliding sleeve 401. The guide sleeve 4051 is slidably sleeved on the sliding rod 4052. When the distance between the upper sliding sleeve 401 and the lower sliding sleeve 402 is adjusted by rotating the connecting bolt 4041, the guide sleeve 4051 and the sliding rod 4052 continuously guide the upper sliding sleeve 401 and the lower sliding sleeve 402 to prevent the upper sliding sleeve 401 and the lower sliding sleeve 402 from radially shifting.

[0025] The insertion assembly 3 includes a connecting plate 301, which is welded to the outer wall of the column 1. A cylindrical tube 302 is fixedly installed at the bottom of the connecting plate 301, and a conical head 303 is fixedly installed at the bottom end of the cylindrical tube 302. As the bottom end of the column 1 is inserted into the soil, the conical head 303 enters the soil first, and then the cylindrical tube 302 is inserted into the soil to reinforce the column 1.

[0026] An internally threaded plate 304 is fixedly installed inside the connecting plate 301. A frustum 306 is slidably disposed inside the conical head 303. The top of the frustum 306 is rotatably connected to a threaded rod 305 via a bearing. The internally threaded plate 304 is threadedly sleeved on the threaded rod 305. An arc-shaped plate 307 is movably disposed inside the cylindrical tube 302. An extension head 308 is fixedly installed on the outer side of the arc-shaped plate 307. The extension head 308 extends from a through groove on the cylindrical tube 302. The outer side of the frustum 306 abuts against the inner side of the arc-shaped plate 307. An elastic metal sheet 309 is fixedly installed on the outer side of the arc-shaped plate 307. The top of the elastic metal sheet 309 is connected to the inner wall of the cylindrical tube 302. A threaded rod 305 is fixedly installed at its top. After the conical head 303 and cylindrical cylinder 302 are inserted into the soil, the handle 5 can be rotated to drive the threaded rod 305 to rotate, which in turn causes the threaded rod 305 to drive the frustum 306 to move downward. The frustum 306 moves downward and abuts against the arc plate 307, causing the arc plate 307 to move outward from the cylindrical cylinder 302, which in turn causes the extension head 308 to extend out from the cylindrical cylinder 302 and then insert into the soil, further increasing the fixing effect of the insertion assembly 3. When it is necessary to pull out the insertion assembly 3, simply rotate the threaded rod 305 in the opposite direction, so that the frustum 306 moves upward and no longer tightly abuts against the inner side of the arc plate 307. At this time, the elastic metal sheet 309 restores its deformation and drives the extension head 308 to reset and retract into the cylindrical cylinder 302.

[0027] A connecting seat 6 is fixedly installed at the top of the column 1. A lifting ring 7 is fixedly installed at the top of the connecting seat 6. A hammering plate 8 is fixedly installed at the top of the lifting ring 7. An tar paper pad 9 is laid on the top of the hammering plate 8. The connecting seat 6 is set up to install the lifting ring 7. The lifting ring 7 is set up to facilitate workers to use hoisting equipment to lift the column 1. The hammering plate 8 is set up so that when inserting the column 1, workers can use hammers or other tools to hammer the hammering plate 8 to drive the column 1 into the soil. The tar paper pad 9 can avoid generating too much noise during hammering.

[0028] Working principle: During use, according to construction requirements, four columns 1 are nailed into the bottom of the foundation pit. Then, threaded connecting rod 1 202 and threaded connecting rod 203 are aligned with the internal threaded hole 201 and screwed in. According to the height difference between adjacent columns 1 (i.e., the height difference between threaded connecting rod 1 202 and threaded connecting rod 203 that need to be connected), the spacing between the upper sliding sleeve 401 and the lower sliding sleeve 402 is adjusted. Then, the upper sliding sleeve 401 is placed on the threaded connecting rod 1 202, and the lower sliding sleeve 402 is placed on the threaded connecting rod 203. The upper limit nut 403 is tightened to limit the upper sliding sleeve 401 and the lower sliding sleeve 402, thus completing the connection of threaded connecting rod 1 202 and threaded connecting rod 203.

[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A safety protection device for foundation pits in road construction projects, comprising four columns (1) connected by an adjustable connecting rod assembly (2), wherein the bottom end of each column (1) is provided with a stake assembly (3), characterized in that: The adjustable connecting rod assembly (2) includes an internal threaded hole (201), a first threaded connecting rod (202), and a second threaded connecting rod (203). The internal threaded hole (201) is opened on the outer wall of the column (1). There are multiple internal threaded holes (201) and they are evenly distributed on the outer wall of the column (1). One end of the first threaded connecting rod (202) is connected to the internal threaded hole (201) on one column (1), and one end of the second threaded connecting rod (203) is connected to the internal threaded hole (201) on another column (1). The first threaded connecting rod (202) and the second threaded connecting rod (203) are connected by an adjustable spacing connector (4). The adjustable spacing connector (4) includes an upper sliding sleeve (401), a lower sliding sleeve (402), and a limiting nut (403). The upper sliding sleeve (401) is slidably sleeved on the first threaded connecting rod (202), and the lower sliding sleeve (402) is slidably sleeved on the second threaded connecting rod (203). The upper sliding sleeve (401) and the lower sliding sleeve (402) are connected by a spiral spacing adjustment component (404). The upper sliding sleeve (401) and the lower sliding sleeve (402) are guided by a guide component (405). The limiting nut (403) is threadedly sleeved on the first threaded connecting rod (202) and the second threaded connecting rod (203), and restricts the upper sliding sleeve (401) and the lower sliding sleeve (402) on the first threaded connecting rod (202) and the second threaded connecting rod (203).

2. The safety protection device for foundation pits in road construction engineering according to claim 1, characterized in that: The spiral spacing adjustment component (404) includes a connecting bolt (4041) and an internal threaded sleeve (4042). The connecting bolt (4041) is rotatably connected to the upper sliding sleeve (401), and the internal threaded sleeve (4042) is fixedly installed inside the lower sliding sleeve (402). The internal threaded sleeve (4042) is threaded onto the connecting bolt (4041).

3. The safety protection device for foundation pits in road construction engineering according to claim 1, characterized in that: The guide component (405) includes a guide sleeve (4051) and a sliding rod (4052). The guide sleeve (4051) is fixedly installed inside the lower sliding sleeve (402), and the sliding rod (4052) is fixedly installed inside the upper sliding sleeve (401). The guide sleeve (4051) is slidably sleeved on the sliding rod (4052).

4. A safety protection device for foundation pits in road construction engineering according to claim 1, characterized in that: The insertion assembly (3) includes a connecting plate (301), which is welded to the outer wall of the column (1). A cylindrical tube (302) is fixedly installed at the bottom of the connecting plate (301), and a conical head (303) is fixedly installed at the bottom end of the cylindrical tube (302).

5. A safety protection device for foundation pits in road construction engineering according to claim 4, characterized in that: An internal threaded plate (304) is fixedly installed inside the connecting plate (301). A frustum (306) is slidably arranged inside the cylindrical tube (302). A threaded rod (305) is rotatably connected to the top of the frustum (306) through a bearing. The internal threaded plate (304) is threaded onto the threaded rod (305). An arc-shaped plate (307) is movably arranged inside the cylindrical tube (302). An extension head (308) is fixedly installed on the outer side of the arc-shaped plate (307). The extension head (308) extends out from the through groove on the cylindrical tube (302). The outer side of the frustum (306) abuts against the inner side of the arc-shaped plate (307). An elastic metal sheet (309) is fixedly installed on the outer side of the arc-shaped plate (307). The top of the elastic metal sheet (309) is connected to the inner wall of the cylindrical tube (302). A throttle (5) is fixedly installed on the top of the threaded rod (305).

6. A safety protection device for foundation pits in road construction engineering according to claim 1, characterized in that: A connecting seat (6) is fixedly installed at the top of the column (1), a lifting ring (7) is fixedly installed at the top of the connecting seat (6), a hammer plate (8) is fixedly installed at the top of the lifting ring (7), and an oil felt pad (9) is laid on the top of the hammer plate (8).

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