Foundation pit safety protection device

Abstract

This invention relates to a foundation pit safety protection device, characterized by comprising: a baffle; a plurality of telescopic rods rotatably installed on the side wall of the baffle, wherein a movable plate is rotatably installed at the end of the telescopic rods away from the baffle; and a positioning block fixedly installed on the movable plate and for insertion into the soil outside the foundation pit. This application is convenient to use and simple to operate.

Description

Technical Field

[0001] This invention relates to the field of foundation pit protection technology, and specifically to a foundation pit safety protection device. Background Technology

[0002] During pipeline laying and maintenance, earthwork excavation is required. To ensure pedestrian safety and prevent children from accidentally entering, construction workers typically install a fence with a fixed counterweight at the bottom around the perimeter of the pit. However, existing safety devices have the following problems in use:

[0003] 1. Existing fences do not have a cushioning and vibration reduction function, making them prone to shaking when accidentally hit by objects. This results in instability during use and makes them easily damaged upon impact, thus reducing their service life.

[0004] 2. Existing fences are inconvenient to position during use, making them prone to accidental movement after installation. Once moved, the safety protection device will lose its effective protective function, thereby reducing safety during use. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the prior art and provide a foundation pit safety protection device. The device uses a baffle to protect the outside of the foundation pit, and several telescopic rods supported on the side wall of the baffle to support the baffle. When the baffle is hit, the telescopic rods will retract to buffer and reduce shock. The bottom of the telescopic rod is provided with a rotatable positioning block. By embedding the positioning block in the bottom surface, the baffle is fixed and the baffle has good grip.

[0006] The technical solution to achieve the above objectives is a foundation pit safety protection device, comprising:

[0007] baffle;

[0008] A plurality of telescopic rods rotatably mounted on the side wall of the baffle, wherein a movable piece is rotatably mounted on the end of each telescopic rod away from the baffle; and

[0009] A positioning block that is fixedly installed on the movable piece and inserted into the soil outside the foundation pit.

[0010] Furthermore, it also includes:

[0011] An adjusting screw is inserted through the positioning block, and the top surface of the positioning block has a threaded opening corresponding to the adjusting screw, and the adjusting screw is threadedly connected to the threaded opening;

[0012] The transmission rod is located at the bottom of the adjusting screw and inside the positioning block. The adjusting screw pushes against the transmission rod, and the body of the transmission rod is fixedly connected to several first rotating shafts.

[0013] An anti-impact spring is fixedly connected to the inner wall of the transmission rod and the positioning block;

[0014] Rotary rod mounted on the first rotating shaft; and

[0015] An anchor rod is rotatably installed at the end of the movable rod away from the transmission rod, and a portion of the anchor rod extends out of the positioning block to form the anchoring section;

[0016] By turning the adjusting screw, the adjusting screw pushes against the transmission rod and drives the first rotating shaft to move toward the bottom of the positioning block, thereby pulling the movable rod, which in turn pulls the anchoring rod, causing the anchoring sections to open outward.

[0017] Furthermore, a first anti-impact pad is fixedly connected to the bottom of the adjusting screw;

[0018] A second anti-impact pad is fixedly connected to the top of the transmission rod, and the top surface of the second anti-impact pad is in contact with the bottom surface of the first anti-impact pad.

[0019] Furthermore, a movable groove is provided on the side of the movable rod near the adjusting screw, and the first rotating shaft slides within the movable groove. By turning the adjusting screw, the adjusting screw drives the first rotating shaft to slide along the movable groove. The first rotating shaft abuts against the end of the movable groove, thereby driving the movable rod to pull the anchor rod to rotate, causing the plurality of anchoring sections to open outward.

[0020] Furthermore, the anchor rod is fixed with a second rotating shaft within the positioning block, and the movable rod is provided with a drilled hole corresponding to the second rotating shaft, the drilled hole being sleeved on the second rotating shaft.

[0021] Furthermore, the inner wall of the positioning block is provided with a rotating hole corresponding to the second rotating shaft, and the second rotating shaft is rotatably mounted in the rotating hole.

[0022] Furthermore, the telescopic rod includes:

[0023] The first connecting pipe, which is rotatably mounted on the baffle, is used.

[0024] A connecting rod passing through the first connecting tube, with a portion of the connecting rod protruding from the first connecting tube to form a contraction section; a second connecting tube sleeved on the contraction section, the movable piece fixed at the end of the second connecting tube away from the first connecting tube, the contraction section being released by moving the second connecting tube;

[0025] A buffer spring is fixedly connected to the first connecting pipe and the second connecting pipe, and the buffer spring is sleeved on the exposed part of the contraction section.

[0026] Furthermore, a second receiving groove is provided on the inner wall of the second connecting pipe, and a second moving block is provided on the contraction section corresponding to the second receiving groove, the second moving block sliding in the second receiving groove.

[0027] Furthermore, a placement plate is fixedly installed at the bottom of the baffle.

[0028] Furthermore, the bottom of the positioning block is tapered.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] The outer side of the foundation pit is protected by a baffle. Several telescopic rods supported on the sidewalls of the baffle support the baffle. When the baffle is impacted, the telescopic rods retract to buffer and absorb shock. The bottom of the telescopic rods is equipped with rotatable positioning blocks. By embedding the positioning blocks in the bottom surface, the baffle is fixed. The baffle is also embedded in the soil in an open shape by anchor rods, which gives the baffle good grip, simple operation, and good impact resistance. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of a foundation pit safety protection device according to the present invention.

[0032] Figure 2 for Figure 1 A schematic diagram of the structure at point C.

[0033] Figure 3 This is a rear view of a foundation pit safety protection device according to the present invention.

[0034] Figure 4 for Figure 3 A schematic diagram of the structure at point A in the middle.

[0035] Figure 5 This is a schematic diagram of the positioning insert of a foundation pit safety protection device according to the present invention.

[0036] Figure 6 for Figure 5 A schematic diagram of the structure at point B.

[0037] Legend: 1. Baffle; 21. First connecting pipe; 22. Buffer spring; 23. Second connecting pipe; 24. Connecting rod; 241. First moving block; 242. Second moving block; 3. Movable piece; 4. Positioning block; 41. Threaded opening; 51. Operating handle; 52. Adjusting screw; 53. First anti-impact pad; 54. Second anti-impact pad; 55. Transmission rod; 56. Anti-impact spring; 6. Anchor rod; 61. Movable rod; 62. Movable groove. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] See Figure 1 , Figure 2 and Figure 3 A foundation pit safety protection device includes: a baffle 1; a plurality of telescopic rods rotatably installed on the side wall of the baffle 1, wherein a movable piece 3 is rotatably installed at the end of the telescopic rod away from the baffle 1; and a positioning block 4 fixedly installed on the movable piece 3 and for insertion into the soil on the surface of the foundation pit.

[0040] Furthermore, it also includes: an adjusting screw 52 passing through the positioning block 4, the top surface of the positioning block 4 having a threaded opening corresponding to the adjusting screw 52, ​​the adjusting screw 52 being threadedly connected to the threaded opening; a transmission rod 55 disposed at the bottom of the adjusting screw 52 and located within the positioning block 4, the adjusting screw 52 pushing against the transmission rod 55, the body of the transmission rod 55 being fixedly connected to several first rotating shafts; and an anti-impact spring 5 fixedly connecting the transmission rod 55 and the inner wall of the positioning block 4. 6; A movable rod 61 is rotatably mounted on the first rotating shaft; and an anchoring rod 6 is rotatably mounted on the end of the movable rod 61 away from the transmission rod 55, wherein a portion of the anchoring rod 6 extends out of the positioning block 4 to form the anchoring section; by turning the adjusting screw 52, ​​the adjusting screw 52 pushes against the transmission rod 55 and drives the first rotating shaft to move toward the bottom of the positioning block 4, thereby pulling the movable rod 61, causing the movable rod 61 to pull the anchoring rod 6, and several of the anchoring sections open outward. A portion of the adjusting screw 52 extends from the threaded opening 41 outside the positioning block 4 to form an outer section, and an operating handle 51 for easy turning is fixedly mounted on the side of the outer section away from the positioning block 4.

[0041] In this invention, a preferred embodiment is as follows: a plurality of U-shaped connecting blocks are provided on the side of the baffle 1 near the foundation pit, a first rotating hole is provided between two opposite side walls of the U-shaped connecting blocks, a second rotating hole is provided on the telescopic rod corresponding to the first rotating hole, and a first connecting shaft is provided. By passing the first connecting shaft through the second rotating hole, a portion of the first connecting shaft extends out of the second rotating hole, and the extended portion of the first connecting shaft is rotatably installed in the first rotating hole, so that the telescopic rod is rotatably installed on the baffle 1.

[0042] A third rotating hole is provided at the end of the telescopic rod away from the baffle 1. Two opposing mounting blocks are fixedly installed on the movable piece 3. The distance between the two mounting blocks is adapted to the diameter of the telescopic rod. A fourth rotating hole is provided on the two opposing side walls of the two mounting blocks to provide a second connecting shaft. By passing the second connecting shaft through the third rotating hole, a portion of the second connecting shaft extends out of the third connecting port. The extended portion of the second connecting shaft is rotatably installed in the fourth rotating hole, so that the movable piece 3 can be rotatably installed at the bottom of the telescopic rod.

[0043] Several baffles 1 are installed at the top of the foundation pit. The telescopic rod is rotated so that the positioning block 4 is vertical to the top surface of the foundation pit. Preferably, when the surface of the foundation pit is uneven (with some sloping soil surface or some mounds higher than the surface), the telescopic rod can be adjusted so that part of the telescopic rod is placed on the top surface of the foundation pit and the other part is placed on the top of the uneven surface. The movable piece 3 is adjusted so that it fits against the surface of the area to be fixed. Preferably, the positioning block 4 and the movable piece 3 are set perpendicularly, and the anchor rod 6 is set parallel to the side wall of the positioning block 4 so that the positioning block 4 and the anchor rod 6 are perpendicular to the area to be fixed. The positioning block 4 is driven into the soil, and the anchor rod 6, which is set parallel to the side wall of the positioning block 4, is driven along the same direction. The anchor rods 6 can be easily inserted into the soil. Tightening the adjusting screw 52 allows it to enter the interior of the positioning block 4, causing the anchor rods 6 to open. Preferably, after adjustment, the anchor rods 6 and the adjusting screw 52 are perpendicular. After setting, the soil is tapped and compacted around the perimeter to prevent the anchor rods 6 and the positioning block 4 from being pulled out. When the anchor rods 6 are parallel to the sidewall of the positioning block 4, the construction workers can easily drive the positioning block 4 into the soil. After the positioning block 4 is driven in, the anchor rods 6 are rotated, causing the limiting rod to be inserted into the surrounding soil, limiting the positioning block 4 and preventing it from falling off the ground, thus improving the stability of the positioning block 4 when inserted into the ground.

[0044] See Figure 4 and Figure 5 Furthermore, a first anti-impact pad is fixedly connected to the bottom of the adjusting screw; a second anti-impact pad is fixedly connected to the top of the transmission rod, with the top surface of the second anti-impact pad fitting against the bottom surface of the first anti-impact pad. The anti-impact spring 56 serves to connect the positioning block 4 and the transmission rod 55, and also absorbs some impact. The first anti-impact pad 53 abuts against the second anti-impact pad 54, and the anti-impact spring 56 limits the movement of the transmission rod 55. The adjusting screw 52 extends out of the threaded opening 41 and forms the outer section.

[0045] In a preferred embodiment of this invention, the first anti-impact pad 53 and the second anti-impact pad 54 are made of elastic material, such as rubber or latex. Preferably, in this application, the first anti-impact pad 53 and the second anti-impact pad 54 are made of rubber. When the baffle 1 is impacted, the impact is transmitted to the positioning block 4 through the telescopic rod. The second anti-impact pad 54 and the first anti-impact pad 53 in the positioning block 4 absorb part of the impact, and the remaining impact is transmitted to the anti-impact spring 56 through the transmission rod 55 or guided to the ground by the anchor rod 6. The anti-impact spring 56 continues to absorb the remaining impact. The remaining impact is absorbed to prevent the positioning block 4 from becoming unstable and detaching from the soil due to excessive impact. Since large construction equipment (such as pile hammers or excavators) often generate large vibrations at the bottom of the foundation pit, the vibrations are transmitted to the positioning block 4 through the ground, and then to the anti-impact spring 56 through the positioning block 4 and the anchor rod 6. The anti-impact spring 56 absorbs part of the vibration, and the remaining vibration is transmitted to the second anti-impact pad 54 and the first anti-impact pad 53 through the transmission rod 55. The remaining vibrations of the first anti-impact pad 53 and the second anti-impact pad 54 are absorbed to prevent the positioning block 4 from becoming unstable due to construction in the foundation pit.

[0046] Furthermore, a movable rod 61 is rotatably connected between the adjusting screw 52 and the anchor rod 6. The movable rod 61 has a movable groove 62 on the side near the adjusting screw 52. A first rotating shaft is fixedly connected to the body of the adjusting screw 52 corresponding to the movable groove 62. The rotating shaft slides within the movable groove 62. By turning the adjusting screw 52, ​​the adjusting screw 52 drives the first rotating shaft to slide along the movable groove 62. The first rotating shaft abuts against the end of the movable groove 62, thereby driving the movable rod 61 to pull the anchor rod 6 to rotate, causing the anchor rod 6 to rotate away from the adjusting screw 52. When subjected to impact or vibration, the impact force is transmitted to the transmission rod 55, which slightly wobbles to counteract the impact force, causing the rotating shaft to slide within the movable groove 62. This prevents the movable rod 61 from receiving the direct effect of the impact force, thereby avoiding structural damage to the movable rod 61 due to external impact. After the impact ends, the anti-impact spring 56 forces the transmission rod 55 to reset and return to its stable state before the impact, thus achieving the damping effect of the positioning block 4.

[0047] Furthermore, the anchor rod 6 is fixed with a second rotating shaft within the positioning block 4, and the movable rod 61 is provided with a drilled hole corresponding to the second rotating shaft, the drilled hole being sleeved on the second rotating shaft.

[0048] Furthermore, the inner wall of the positioning block 4 is provided with a rotating hole corresponding to the second rotating shaft, and the second rotating shaft is rotatably mounted in the rotating hole. The rotating hole ensures that the position of the end of the anchor rod 6 is fixed.

[0049] Furthermore, the telescopic rod includes: a first connecting pipe 21 rotatably mounted on the baffle 1; a connecting rod 24 passing through the first connecting pipe 21, with a portion of the connecting rod 24 protruding from the first connecting pipe 21 to form a contraction section; and a second connecting pipe 23 sleeved on the contraction section, with the movable piece 3 fixed at the end of the second connecting pipe 23 away from the first connecting pipe 21, and the contraction section being released by moving the second connecting pipe 23.

[0050] Furthermore, the inner wall of the second connecting pipe 23 is provided with a second receiving groove, and the contraction section is provided with a second moving block 242 corresponding to the second receiving groove, and the second moving block 242 slides in the second receiving groove.

[0051] In a preferred embodiment of the present invention, the first connecting pipe 21 is provided with a first receiving groove, and the connecting rod 24 is provided with a first moving block 241 corresponding to the first receiving groove, and the first moving block 241 slides in the first receiving groove.

[0052] Furthermore, a buffer spring 22 is provided between the first connecting pipe 21 and the second connecting pipe 23, and the buffer spring 22 is sleeved on the exposed part of the contraction section.

[0053] In a preferred embodiment of the present invention, after the baffle 1 receives an impact, the first connecting pipe 21 moves toward the second connecting pipe 23, the buffer spring 22 is compressed and absorbs part of the impact force, the exposed portion of the contraction section decreases, and the remaining impact force is transmitted to the positioning block 4 through the movable piece 3; after the impact ends, the buffer spring 22 resets and pushes the first connecting pipe 21 to move away from the second connecting pipe 23, and the exposed portion of the contraction section increases.

[0054] Furthermore, a placement plate is fixedly installed at the bottom of the baffle 1. The bottom of the placement plate is in contact with the top surface of the pit.

[0055] Furthermore, the bottom of the positioning block 4 is conical. The conical positioning block 4 can be easily inserted into the soil.

[0056] The following describes the usage process of a foundation pit safety protection device according to the present invention.

[0057] In use, the placement plate is placed on the top surface of the foundation pit. The side of the baffle 1 with the telescopic rod is positioned close to the foundation pit. A suitable mounting surface for fixing the positioning block 4 is found, and the telescopic rod is rotated so that the positioning block 4 is close to the mounting surface. The movable piece 3 is adjusted so that it fits against the mounting surface. The positioning block 4 is then set onto the mounting surface until the top surface of the movable piece 3 and the top surface of the mounting surface are on the same plane. The adjusting screw 52 is turned towards the positioning block 4. The adjusting screw 52 presses down on the first anti-impact pad 53. The first anti-impact pad 53 presses down on the second anti-impact pad 54 and pushes the transmission rod 55 towards the bottom of the positioning block 4. The anti-impact spring 56 is compressed, and the first rotating shaft moves along the movable groove 62. When the first rotating shaft moves to the movable groove 62 close to the adjusting screw 52, ​​the adjustment screw 52 is turned towards the bottom of the positioning block 4. When the end of the screw rod 52 is reached, the first rotating shaft pulls the movable rod 61 toward the bottom of the positioning block 4, thereby causing the anchoring section to rotate away from the transmission rod 55, thus anchoring the positioning block 4. After the baffle 1 is impacted, the first connecting pipe 21 moves toward the second connecting pipe 23 and compresses the buffer spring 22. The buffer spring 22 absorbs part of the impact force, and the remaining impact force is transmitted to the positioning block 4 through the second connecting pipe 23. The first anti-impact pad 53 and the second anti-impact pad 54 in the positioning block 4 continue to absorb part of the impact force. The final impact force is either transmitted to the soil through the anchor rod 6 or absorbed by the anti-impact pad, thereby buffering the force on the baffle 1 and ensuring the continuous stability of the positioning block 4, preventing the positioning block 4 from separating from the soil. It is convenient to use and simple to operate.

[0058] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A foundation pit safety protection device, characterized in that: include: baffle; A plurality of telescopic rods are rotatably mounted on the side wall of the baffle, and a movable piece is rotatably mounted on the end of the telescopic rod away from the baffle; as well as A positioning block fixedly installed on the movable piece and inserted into the soil outside the foundation pit; Also includes: An adjusting screw is inserted through the positioning block, and the top surface of the positioning block has a threaded opening corresponding to the adjusting screw, and the adjusting screw is threadedly connected to the threaded opening; The transmission rod is located at the bottom of the adjusting screw and inside the positioning block. The adjusting screw pushes against the transmission rod, and the body of the transmission rod is fixedly connected to several first rotating shafts. An anti-impact spring is fixedly connected to the inner wall of the transmission rod and the positioning block; Rotary rod mounted on the first rotating shaft; and An anchor rod is rotatably installed at the end of the movable rod away from the transmission rod, and a portion of the anchor rod extends out of the positioning block to form an anchoring section; By turning the adjusting screw, the adjusting screw pushes against the transmission rod and drives the first rotating shaft to move toward the bottom of the positioning block, thereby pulling the movable rod, which in turn pulls the anchor rod, causing several of the anchoring sections to open outward; the bottom of the adjusting screw is fixedly connected to a first anti-impact pad; A second anti-impact pad is fixedly connected to the top of the transmission rod, and the top surface of the second anti-impact pad is in contact with the bottom surface of the first anti-impact pad.

2. The foundation pit safety protection device according to claim 1, characterized in that: The movable rod has a movable groove on the side near the adjusting screw. The first rotating shaft slides in the movable groove. By turning the adjusting screw, the adjusting screw drives the first rotating shaft to slide along the movable groove. The first rotating shaft abuts against the end of the movable groove, thereby driving the movable rod to pull the anchor rod to rotate, causing the several anchor sections to open outward.

3. The foundation pit safety protection device according to claim 1, characterized in that: The anchor rod is fixed with a second rotating shaft within the positioning block. The movable rod has a drilled hole corresponding to the second rotating shaft, and the drilled hole is fitted onto the second rotating shaft.

4. A foundation pit safety protection device according to claim 3, characterized in that: The inner wall of the positioning block is provided with a rotating hole corresponding to the second rotating shaft, and the second rotating shaft is rotatably installed in the rotating hole.

5. A foundation pit safety protection device according to claim 1, characterized in that: The telescopic rod includes: The first connecting pipe, which is rotatably mounted on the baffle, is used. A connecting rod passing through the first connecting tube, with a portion of the connecting rod protruding from the first connecting tube to form a contraction section; a second connecting tube sleeved on the contraction section, the movable piece fixed at the end of the second connecting tube away from the first connecting tube, the contraction section being released by moving the second connecting tube; A buffer spring is fixedly connected to the first connecting pipe and the second connecting pipe, and the buffer spring is sleeved on the exposed part of the contraction section.

6. A foundation pit safety protection device according to claim 5, characterized in that: The inner wall of the second connecting pipe is provided with a second receiving groove, and the contraction section is provided with a second moving block corresponding to the second receiving groove, and the second moving block slides in the second receiving groove.

7. A foundation pit safety protection device according to claim 1, characterized in that: A placement plate is fixedly installed at the bottom of the baffle.

8. A foundation pit safety protection device according to claim 1, characterized in that: The bottom of the positioning block is conical.

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