Foundation pit safety protection device for highway engineering

Abstract

The utility model discloses a foundation pit safety protection device for highway engineering, which belongs to the field of foundation pit safety protection and comprises a handrail, a guardrail hinged to the handrail and a first supporting mechanism arranged at the bottom of the handrail and used for supporting. The first supporting mechanism comprises rolling wheels fixedly arranged at the bottom end of the handrail, a U-shaped supporting piece arranged at the bottom of the handrail in a sleeving mode and a rotating ring arranged on the handrail in a sleeving mode, the rotating ring is in threaded connection with the handrail, and the rotating ring is rotationally connected with the U-shaped supporting piece. Due to the fact that the handrails arranged on the U-shaped supporting pieces are located at the two ends of the whole protection device, and the supporting points of the U-shaped supporting pieces are located on the two sides of the guardrails, the whole protection device is not prone to toppling towards the periphery, when the protection device needs to be transferred, the rotating rings are rotated, the rotating rings move upwards on the handrails to drive the U-shaped supporting pieces to move upwards, and the U-shaped supporting pieces are separated from the ground. The rollers start to contact with the ground and are transported by rolling the rollers.

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 highway engineering. Background Technology

[0002] In highway engineering, it is often necessary to excavate foundation pits. A foundation pit is an earthen pit excavated at the designed foundation location according to the base elevation and foundation dimensions. Before excavation, an excavation plan should be determined based on geological and hydrological data, combined with the conditions of nearby buildings, and waterproofing and drainage work should be carried out. After the foundation pit is excavated, to prevent workers from accidentally entering the pit and causing structural damage or personal injury, safety protection devices must be used around the pit for protection.

[0003] An investigation revealed that Chinese utility model patent CN221856422U discloses a safety protection device for foundation pits in highway engineering, including a guardrail. One end of the guardrail is fixedly connected to the outside of a connecting rod, and a cavity is provided between the guardrail and the connecting rod. A movable insert is rotatably connected to the outside of the connecting rod. There are two movable inserts, and the two movable inserts are adapted to a second slot. A base plate is fixedly connected to the bottom end of the guardrail. The base plate has two locations, and a first slot is opened inside the two base plates. The first slot is used for the installation and insertion of a support plate.

[0004] This foundation pit safety protection device can be connected to other guardrails with connecting posts by setting movable blocks inside the connecting rods. The angle can be adjusted at will to adapt to various foundation pits. The support plates on both sides of the guardrail can play a certain role in preventing tipping. However, in order to achieve rolling transportation, this foundation pit safety protection device uses casters as a support mechanism. The support area with the ground is small, the support is not stable enough, and the wear and tear on the casters is relatively large. If multiple casters are installed for support, opening and locking the casters before each transportation and fixing becomes extremely cumbersome. As an auxiliary support, the support plate can only partially support the weight of the protection device when the guardrail tipps over. If the support plate is too short, when one end of the support plate is on the ground, the other end cannot abut against the limiting plate. If the support plate is long enough, it is difficult to insert into the groove on the limiting plate during installation. The guardrail needs to be lifted or lowered, which is cumbersome and laborious.

[0005] Therefore, this utility model provides a safety protection device for foundation pits in highway engineering to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This utility model provides a safety protection device for foundation pits in highway engineering, aiming to solve the problems mentioned in the background art, such as the small support area of ​​the ground, insufficient support stability, and large wear and tear on the casters.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a safety protection device for foundation pits in highway engineering, comprising a railing, a guardrail hinged to the railing, and a first support mechanism set at the bottom of the railing for support. The first support mechanism includes rollers fixedly set at the bottom end of the railing, a U-shaped support sleeved at the bottom of the railing, and a rotating ring sleeved on the railing. The rotating ring is threadedly connected to the railing and rotatably connected to the U-shaped support. Since the railing with the U-shaped support is located at both ends of the overall protection device, and the support points of the U-shaped support are located on both sides of the guardrail, the device is not easily tilted in all directions. When the protection device needs to be moved, the rotating ring is rotated, and the rotating ring moves upward on the railing, causing the U-shaped support to move upward. The U-shaped support leaves the ground, and the rollers begin to contact the ground. The device is transported by rolling the rollers. Conversely, when the device reaches the protection location, the rotating ring is rotated, causing the U-shaped support to move downward and gradually contact the ground, while the rollers leave the ground.

[0010] Preferably, at least two protruding strips are fixedly provided on the inner wall of the U-shaped support member that contacts the railing. The protruding strips extend along the axial direction of the railing. A sliding groove that cooperates with the protruding strips is provided on the bottom side of the railing. When the rotating ring is rotated, the cooperation between the protruding strips and the sliding groove can prevent the U-shaped support member from rotating randomly. When the line connecting the two side walls of the U-shaped support member is close to the extension direction of the railing, it will affect the stability of the support.

[0011] Preferably, an intermediate pivot is provided between the two railings, and the guardrails connected to the two railings are respectively hinged to the intermediate pivot. When the protective device is installed, the protective device can be easily adjusted by rotating the guardrails on the intermediate pivot to avoid small obstacles.

[0012] Preferably, a second support mechanism is provided at the bottom of the intermediate rotating shaft. The second support mechanism includes a rod inserted into the bottom end of the intermediate rotating shaft and a support plate fixedly connected to the end of the rod away from the intermediate rotating shaft. A fixing bolt A for fixing the rod is provided on the side of the intermediate rotating shaft. The rod can increase the support for the intermediate rotating shaft, and the support plate is used to increase the support area. When the ground where the protective device is located has a certain inclination angle perpendicular to the guardrail direction, the stability of the protective device can be increased by adjusting the height of the rod. The rod is then fixed to the intermediate rotating shaft by the fixing bolt A.

[0013] Preferably, a connector is hinged to the railing, the connector extending axially along the side wall of the railing, and a strip-shaped mounting groove is formed on the connector. A corresponding insert is hinged to the side wall of the railing connected to the adjacent protective device, the insert matching the mounting groove. A plurality of fixing bolts B for fixing the insert are arranged in an array along the mounting groove on the side wall of the connector. By inserting the insert into the mounting groove on the connector and then fixing it with the fixing bolts B, the safety protection device can be connected. The pit is isolated by a row of protective devices. The installation groove and insert can still be connected even when the railing heights are different.

[0014] (III) Beneficial Effects

[0015] The pit safety protection device is equipped with a rotating ring. When the rotating ring is rotated, it moves upward on the railing, which drives the U-shaped support to move upward, allowing the U-shaped support to detach from the ground and the rollers to contact the ground for transport. Conversely, when it reaches the protected location, the rotating ring is rotated to drive the U-shaped support to move downward, gradually making contact with the ground, and the rollers then leave the ground.

[0016] The pit safety protection device is designed with a central pivot, which allows the guardrail to be easily adjusted to avoid small obstacles. The stability of the device can be increased by adjusting the height of the insert rod.

[0017] The foundation pit safety protection device is designed by inserting a strip into the mounting groove on the connector and then fixing it with fixing bolt B. This allows the safety protection device to be connected and the foundation pit to be isolated by a row of protective devices. The installation groove and the strip can be connected even when the height of the railing is different. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0019] Figure 2 This is an elevation view of the first support mechanism of this utility model;

[0020] Figure 3 This is a cross-sectional view of the first support mechanism of this utility model;

[0021] Figure 4 This is a cross-sectional view of the second support mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the connection part of this utility model.

[0023] In the diagram: 1. Railing; 11. Guardrail; 2. First support mechanism; 21. Roller; 22. Rotating ring; 23. U-shaped support; 24. Protruding strip; 25. Sliding groove; 3. Intermediate shaft; 4. Second support mechanism; 41. Insert rod; 42. Support plate; 43. Fixing bolt A; 5. Connector; 6. Mounting groove; 7. Insert strip; 8. Fixing bolt B. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides a safety protection device for foundation pits in highway engineering, referring to... Figures 1 to 2 The system includes a railing 1, a guardrail 11 hinged to the railing 1, and a first support mechanism 2 provided at the bottom of the railing 1 for support. The first support mechanism 2 includes a roller 21 fixedly provided at the bottom end of the railing 1, a U-shaped support member 23 sleeved at the bottom of the railing 1, and a rotating ring 22 sleeved on the railing 1. The rotating ring 22 is threadedly connected to the railing 1, and the rotating ring 22 is rotatably connected to the U-shaped support member 23.

[0026] When in use, the safety protection device is arranged in sequence to isolate personnel from the highway construction pit, preventing them from accidentally falling into it. At this time, the U-shaped support 23 is supported on the ground. Since the railings 1 set on the U-shaped support 23 are located at both ends of the overall protection device, and the support points of the U-shaped support 23 are located on both sides of the guardrail 11, the device is not easy to tilt in all directions. When it is necessary to move the protection device, the rotating ring 22 is rotated. The rotating ring 22 moves upward on the guardrail 1, which drives the U-shaped support 23 to move upward. The U-shaped support 23 leaves the ground, and the roller 21 begins to contact the ground. It is transported by rolling the roller 21. Conversely, when it reaches the protection location, the rotating ring 22 is rotated to drive the U-shaped support 23 to move downward, gradually contacting the ground, and the roller 21 leaves the ground.

[0027] Furthermore, refer to Figures 1 to 3At least two protruding strips 24 are fixedly provided on the inner wall of the U-shaped support member 23 that contacts the railing 1. The protruding strips 24 extend along the axial direction of the railing 1. A sliding groove 25 that cooperates with the protruding strips 24 is provided on the bottom side of the railing 1. When the rotating ring 22 is rotated, the cooperation between the protruding strips 24 and the sliding groove 25 can prevent the U-shaped support member 23 from rotating randomly. When the line connecting the two side walls of the U-shaped support member 23 is close to the extension direction of the railing 11, it will affect the stability of the support.

[0028] Furthermore, refer to Figures 1 to 3 An intermediate pivot 3 is provided between the two railings 1. The guardrails 11 connected to the two railings 1 are respectively hinged to the intermediate pivot 3. When the protective device is installed, the protective device can be easily adjusted by rotating the guardrails 11 on the intermediate pivot 3 to avoid small obstacles.

[0029] It is worth noting that, referring to Figure 1 , Figure 4 The bottom of the intermediate rotating shaft 3 is provided with a second support mechanism 4. The second support mechanism 4 includes a rod 41 inserted into the bottom end of the intermediate rotating shaft 3 and a support plate 42 fixedly connected to the end of the rod 41 away from the intermediate rotating shaft 3. The side of the intermediate rotating shaft 3 is provided with a fixing bolt A43 for fixing the rod 41. When the intermediate rotating shaft 3 is too far away from the railing 1, the support of the intermediate rotating shaft 3 can be increased by the rod 41. The support plate 42 is used to increase the support area. When the ground where the protective device is located is perpendicular to the direction of the railing 11 and has a certain inclination, the stability of the protective device can be increased by adjusting the height of the rod 41. Then, the rod 41 is fixed to the intermediate rotating shaft 3 by the fixing bolt A43.

[0030] It should be noted that, referring to Figure 1 , Figure 5 A connector 5 is hinged to the railing 1. The connector 5 extends axially along the side wall of the railing 1 and has a strip-shaped mounting groove 6. A corresponding insert 7 is hinged to the side wall of the railing 1 connected to the adjacent protective device. The insert 7 matches the mounting groove 6. Several fixing bolts B8 for fixing the insert 7 are arranged in an array along the mounting groove 6 on the side wall of the connector 5. By inserting the insert 7 into the mounting groove 6 on the connector 5 and fixing it with the fixing bolts B8, the safety protection device can be connected. The pit is isolated by a row of protective devices. The installation groove 6 and the insert 7 can still be connected even when the height of the railing 1 is different.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A foundation safety protection device for highway engineering, comprising a guardrail (1), a guard fence (11) hinged to the guardrail (1), and a first supporting mechanism (2) arranged at the bottom of the guardrail (1) to provide support. characterized in that The first supporting mechanism (2) comprises a roller (21) fixedly arranged at the bottom end of the guardrail (1), a U-shaped support (23) sleeved on the bottom of the guardrail (1), and a rotating ring (22) sleeved on the guardrail (1), wherein the rotating ring (22) is threadedly connected with the guardrail (1), and the rotating ring (22) is rotationally connected with the U-shaped support (23).

2. The safety protection device for foundation pit in highway engineering according to claim 1, characterized in that: At least two protruding strips (24) are fixedly arranged on the inner wall of the U-shaped support (23) in contact with the guardrail (1), the protruding strips extend axially along the guardrail (1), and a sliding groove (25) is formed in the side of the bottom of the guardrail (1) to cooperate with the protruding strips (24).

3. The safety protection device for foundation pit in highway engineering according to claim 2, characterized in that: An intermediate rotating shaft (3) is arranged between two guardrails (1), and the guard fences (11) connected to the two guardrails (1) are hinged to the intermediate rotating shaft (3).

4. The pit safety protection device for highway engineering according to claim 3, characterized in that: A second supporting mechanism (4) is arranged at the bottom of the intermediate rotating shaft (3), the second supporting mechanism (4) comprises a plug rod (41) inserted into the bottom end of the intermediate rotating shaft (3), a supporting disc (42) fixedly connected to the end of the plug rod (41) away from the intermediate rotating shaft (3), and a fixing bolt A (43) arranged on the side of the intermediate rotating shaft (3) to fix the plug rod (41).

5. A safety protection device for foundation pit of highway engineering according to claim 4, characterized in that: A connecting piece (5) is hinged to the guardrail (1), the connecting piece (5) extends axially along the side wall of the guardrail (1), a strip-shaped mounting groove (6) is formed in the connecting piece (5), a plug strip (7) is hinged to the side wall of the guardrail (1) of the adjacent protection device, the plug strip (7) is matched with the mounting groove (6), and a plurality of fixing bolts B (8) for fixing the plug strip (7) are arranged in an array on the side wall of the connecting piece (5) along the mounting groove (6).

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