A safety protection device for road foundation pit construction

Abstract

This invention provides a safety protection device for road foundation pit construction, relating to the field of road construction safety protection. It includes a pair of support columns and a protective netting disposed between the two support columns. A buffer assembly is provided between the support columns and the protective netting. The protective netting is connected to the support columns through the buffer assembly, allowing the protective netting to elastically displace relative to the support columns. An anti-tilting mechanism is also provided on each support column. This anti-tilting mechanism activates in response to the elastic displacement of the protective netting upon impact, thereby enhancing the support stability of the support columns. This safety protection device for road foundation pit construction, through the springs and telescopic rods of the buffer assembly, allows the protective netting to elastically displace upon impact, effectively absorbing impact energy and preventing the impact force from being directly transmitted to the support columns, thus preventing deformation or tilting of the support columns.

Description

Technical Field

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

[0002] Excavation of foundation pits is a common part of urban road construction. To prevent personnel and equipment from accidentally falling into the pit, safety protection equipment, such as guardrails and safety nets, is usually installed at the edge of the pit. Existing foundation pit protection equipment mainly consists of support columns and safety nets. The safety nets are fixedly connected to the support columns, which are then fixed to the ground by bases or nails.

[0003] However, this type of fixed protective equipment has the following shortcomings: First, when the protective net is subjected to accidental impact (such as collision with construction machinery), the impact force is directly transmitted to the support column, which can easily cause the support column to deform, tilt, or even break, losing its protective function; second, the fixed connection cannot buffer the impact energy, and the protective net itself is also easily damaged; third, when the impact force is large, the support column may tilt towards the foundation pit, causing a secondary safety accident. In addition, the existing protective equipment does not have the function of automatically enhancing stability and cannot actively improve the overturning resistance of the support column when subjected to impact. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a safety protection device for road foundation pit construction. This device achieves elastic displacement of the protective net through a buffer component, effectively absorbing impact energy; simultaneously, it responds to impact actions through an anti-tilting mechanism, automatically enhancing the support stability of the support column, preventing the support column from tilting, and improving construction safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a safety protection device for road foundation pit construction, comprising a pair of support columns and a protective net disposed between the two support columns, characterized in that: a buffer component is disposed between the support columns and the protective net, and the protective net is connected to the support columns through the buffer component, allowing the protective net to elastically displace relative to the support columns; an anti-tilting mechanism is also disposed on the support columns, the anti-tilting mechanism responding to the elastic displacement of the protective net when it is impacted, thereby enhancing the support stability of the support columns.

[0006] Furthermore, the buffer assembly includes a telescopic rod and a spring. The telescopic rod is horizontally slidably fitted onto the support column, and its outer end is fixedly connected to the protective net. One end of the spring abuts against the protective net or the telescopic rod, and the other end abuts against the support column, for applying a restoring force to the protective net away from the support column.

[0007] Furthermore, the support column has a hollow structure, the inner end of the telescopic rod extends into the support column, and the inner end of the telescopic rod is fixedly connected to a limiting plate.

[0008] Furthermore, a base is fixedly connected to the bottom of the support column, and a first pin is fixedly connected to the bottom of the base.

[0009] Furthermore, the anti-tilting mechanism includes a support component and a drive component; the support component is movably connected to the bottom or side of the support column, and has a retracted state and an extended state. In the extended state, the support component contacts the ground to enhance support stability; the drive component is disposed inside the support column and is used to drive the support component to switch from the retracted state to the extended state in response to the elastic displacement of the protective net.

[0010] Furthermore, the support assembly includes a housing, a sliding block, and a support member; the housing is fixedly connected to the support column, the sliding block is slidably fitted inside the housing, and the support member is fixedly connected to the bottom or side of the sliding block; the driving assembly drives the sliding block to slide, causing the support member to extend out of the housing.

[0011] Furthermore, the support member is a second pin, the outer shell is fixedly connected to the bottom of the support column, and the bottom of the outer shell has an opening for the second pin to extend out.

[0012] Furthermore, the support is a support base, the outer shell is fixedly connected to the side of the support column facing the pit, and the opening of the outer shell faces the ground. The support base is fixedly connected to the sliding block through a connecting rod.

[0013] Furthermore, the drive assembly includes an airbag, a connecting pipe, and a piston block; the piston block is fixedly connected to the sliding block and cooperates with the outer casing piston to form a pressure chamber; the airbag is fixed inside the support column and corresponds to the inner end of the telescopic rod or the limiting plate; the connecting pipe connects the airbag and the pressure chamber; when the protective net is impacted, the telescopic rod compresses the airbag, and the gas enters the pressure chamber through the connecting pipe, pushing the sliding block to extend the support member.

[0014] Furthermore, a one-way valve is fixedly connected to the connecting pipe, and the number of buffer components on each support column is at least two.

[0015] This invention provides a safety protection device for road foundation pit construction, which has the following beneficial effects: 1. The safety protection equipment used in the construction of the road foundation pit, through the springs and telescopic rods of the buffer components, allows the protective net to elastically displace when impacted, effectively absorbing impact energy and preventing the impact force from being directly transmitted to the support columns, thus preventing the support columns from deforming or tilting.

[0016] 2. Safety protection equipment for road foundation pit construction: When the protective net is impacted and undergoes elastic displacement, the telescopic rod compresses the air bladder, and the support component of the anti-tilting mechanism automatically extends through air pressure, enhancing the support stability of the support column and preventing the support column from tilting towards the foundation pit after impact.

[0017] 3. The safety protection equipment used for road foundation pit construction has a base and a first pin at the bottom of the support column. The second pin or support seat of the anti-tilting mechanism automatically extends when impacted to form auxiliary support, further improving the equipment's anti-tilting ability.

[0018] 4. The safety protection equipment used in the construction of the road foundation pit is equipped with a one-way valve on the connecting pipe to ensure that the gas does not flow back after the airbag is compressed, so that the anti-tilting mechanism remains in the extended state after the impact and continues to provide support. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the support column structure of the present invention; Figure 3 This is a front view of the support column structure of the present invention; Figure 4 This is a schematic diagram of the buffer component structure of the present invention; Figure 5 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 7 For the present invention Figure 5 Enlarged view of the structure at point A in the middle.

[0020] In the diagram: 1. Support column; 11. Base; 12. First pin; 2. Protective net; 3. Buffer assembly; 31. Telescopic rod; 32. Spring; 33. Limiting plate; 4. Anti-tilting mechanism; 41. Outer shell; 42. Sliding block; 43. Drive assembly; 431. Airbag; 432. Connecting pipe; 433. Piston block; 434. One-way valve; 44. Second pin; 45. Support seat; 46. Connecting rod. Detailed Implementation

[0021] This invention provides a safety protection device for road foundation pit construction, such as... Figures 1 to 7 As shown, this device is mainly used for safety protection at the edge of excavated foundation pits in urban roads. The device includes a pair of support columns 1, a protective net 2 positioned between the two support columns 1, a buffer assembly 3, and an anti-tipping mechanism 4.

[0022] The support column 1 is a vertically arranged column made of metal, with a base 11 fixedly connected to its bottom. The base 11 is a horizontally arranged metal base used to increase the contact area between the support column 1 and the ground. Multiple first pins 12 are fixedly connected to the bottom of the base 11, extending downwards to insert into the ground and fix the support column 1 to the ground. The support column 1 has a hollow structure, forming an internal space for installing a portion of the buffer assembly 3 and the drive assembly 43.

[0023] The protective net 2 is installed between two support columns 1 to prevent people or objects from falling into the pit. The protective net 2 is connected to the support columns 1 through a buffer assembly 3, allowing the protective net 2 to move horizontally and elastically relative to the support columns 1.

[0024] The buffer assembly 3 includes a telescopic rod 31 and a spring 32. The telescopic rod 31 is horizontally positioned and slidably fitted into a through hole in the side wall of the support column 1. Its outer end (the end furthest from the support column 1) is fixedly connected to the edge of the protective net 2. The inner end of the telescopic rod 31 extends into the interior of the support column 1 and is fixedly connected to a limiting plate 33. The limiting plate 33 is a rectangular plate, which not only prevents the telescopic rod 31 from coming out of the support column 1, but also allows the airbag 431 to be compressed more comprehensively, ensuring the output of the airbag 431. The spring 32 is sleeved on the outside of the telescopic rod 31, with one end abutting against the protective net 2 (or the outer end of the telescopic rod 31) and the other end abutting against the outer wall of the support column 1. The spring 32 is always in a compressed state, applying a thrust to the protective net 2 away from the support column 1, keeping the protective net 2 taut under normal conditions.

[0025] In this embodiment, each support column 1 is provided with at least two buffer components 3, which are arranged vertically at intervals to ensure that the protective net 2 is subjected to uniform force and has stable displacement.

[0026] An anti-tilting mechanism 4 is mounted on the support column 1 and is designed to activate in response to the elastic displacement of the protective netting 2 when it is impacted, thereby enhancing the support stability of the support column 1. The anti-tilting mechanism 4 includes a support assembly and a drive assembly 43.

[0027] The support component is movably connected to the bottom or side of the support column 1, and has a retracted state and an extended state. In the extended state, the support component is in contact with the ground, forming auxiliary support and enhancing the overturning resistance of the support column 1.

[0028] This invention provides two implementation methods for the support component: Implementation Method 1 (Pin Type, such as...) Figure 5(As shown): The support assembly includes a housing 41, a sliding block 42, and a second pin 44. The housing 41 is fixedly connected to the bottom of the support column 1. The housing 41 is hollow inside, and the sliding block 42 is slidably fitted inside the housing 41. The second pin 44 is fixedly connected to the bottom of the sliding block 42, and the bottom of the housing 41 has an opening for the second pin 44 to protrude. Under normal conditions, the second pin 44 is retracted inside the housing 41 (i.e., the tip of the second pin 44 does not protrude from the bottom of the housing 41). When the drive assembly 43 is activated, it pushes the sliding block 42 downward, and the second pin 44 protrudes from the opening at the bottom of the housing 41 and inserts below the ground to form an auxiliary fixation.

[0029] Implementation Method Two (Support Base Type, such as...) Figure 6 (As shown): The support assembly includes a housing 41, a sliding block 42, a connecting rod 46, and a support base 45. The housing 41 is fixedly connected to the side of the support column 1 facing the pit. The housing 41 is hollow inside, and the sliding block 42 is slidably fitted inside the housing 41. The opening of the housing 41 faces the ground. One end of the connecting rod 46 is fixedly connected to the sliding block 42, and the other end extends to the outside of the opening of the housing 41 and is fixedly connected to the support base 45. The support base 45 is a horizontally arranged plate structure for contacting the ground. Under normal conditions, the support base 45 is suspended above the ground. When the drive assembly 43 is activated, it pushes the sliding block 42 downward, which in turn moves the support base 45 downward to contact the ground through the connecting rod 46, forming auxiliary support.

[0030] The drive assembly 43 is disposed inside the support column 1 and is used to drive the support assembly from a retracted state to an extended state in response to the elastic displacement of the protective net 2. The drive assembly 43 includes an airbag 431, a connecting tube 432, and a piston block 433.

[0031] The airbag 431 is an elastic compressible bladder, fixedly connected to the inside of the support column 1. The airbag 431 is elongated and covers all the limiting plates 33, located on the movement path of the inner end of the telescopic rod 31 (i.e., the limiting plate 33). When the protective net 2 is impacted, the telescopic rod 31 moves inward, and the limiting plate 33 compresses the airbag 431.

[0032] The piston block 433 is fixedly connected to the sliding block 42 of the support assembly and cooperates with the piston on the inner wall of the outer shell 41, forming a sealed pressure chamber between the piston block 433 and the outer shell 41. One end of the connecting pipe 432 is connected to the pressure chamber, and the other end is connected to the airbag 431. When the limiting plate 33 compresses the airbag 431, the gas in the airbag 431 enters the pressure chamber through the connecting pipe 432, pushing the piston block 433 to slide downward, thereby causing the second pin 44 or the support seat 45 to extend.

[0033] Preferably, a one-way valve 434 is fixedly connected to the connecting pipe 432. The one-way valve 434 only allows gas to flow from the airbag 431 to the pressure chamber, preventing gas backflow. When the protective net 2 is impacted, even if the spring 32 returns to its original position, although the airbag 431 is no longer actively compressed, the gas cannot flow back to the airbag due to the shut-off effect of the one-way valve 434. The airbag remains compressed, and at the same time, the pressure in the pressure chamber maintains the extension of the anti-tilting mechanism, keeping the second pin 44 or the support seat 45 in an extended state, continuously providing auxiliary support.

[0034] Working principle: Normal state: The protective net 2 is in a taut state, and the spring 32 pushes the protective net 2 away from the support column 1. The airbag 431 is in a naturally inflated state, there is no high-pressure gas in the air pressure chamber, and the second pin 44 or support base 45 is stored in the outer shell 41.

[0035] Impact Condition: When the protective net 2 is subjected to an impact force from outside the pit (such as a collision with construction machinery), the protective net 2 moves towards the support column 1, compressing the spring 32. Simultaneously, the telescopic rod 31 slides inward, and the limiting plate 33 compresses the airbag 431. The gas inside the airbag 431 enters the pressure chamber through the connecting pipe 432 and the one-way valve 434, pushing the piston block 433 downward and causing the second pin 44 (or support seat 45) to extend. The second pin 44 inserts into the ground (or the support seat 45 contacts the ground), forming auxiliary support and enhancing the overturning resistance of the support column 1.

[0036] After impact: Spring 32 resets, pushing the protective net 2 back to its initial position. However, due to the action of the one-way valve 434, the gas in the pressure chamber cannot flow back, and the second pin 44 (or support seat 45) remains extended, continuously providing auxiliary support to prevent the support column 1 from tipping over in subsequent secondary impacts. After construction is completed, the gas in the pressure chamber can be released through the pressure relief valve (not shown in the figure), allowing the anti-tilting mechanism 4 to reset.

[0037] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A safety protection device for road foundation pit construction, comprising a pair of support columns (1) and a protective net (2) disposed between the two support columns (1), characterized in that: A buffer assembly (3) is provided between the support column (1) and the protective net (2). The protective net (2) is connected to the support column (1) through the buffer assembly (3), so that the protective net (2) can elastically displace relative to the support column (1). An anti-tilting mechanism (4) is also provided on the support column (1). The anti-tilting mechanism (4) responds to the elastic displacement of the protective net (2) when it is impacted, so as to enhance the support stability of the support column (1).

2. The safety protection equipment for road foundation pit construction according to claim 1, characterized in that: The buffer assembly (3) includes a telescopic rod (31) and a spring (32). The telescopic rod (31) is horizontally slidably fitted onto the support column (1), and its outer end is fixedly connected to the protective net (2). One end of the spring (32) abuts against the protective net (2) or the telescopic rod (31), and the other end abuts against the support column (1), and is used to apply a restoring force to the protective net (2) in a direction away from the support column (1).

3. The safety protection equipment for road foundation pit construction according to claim 2, characterized in that: The support column (1) has a hollow structure, and the inner end of the telescopic rod (31) extends into the support column (1), and the inner end of the telescopic rod (31) is fixedly connected to a limiting plate (33).

4. The safety protection equipment for road foundation pit construction according to claim 1, characterized in that: The bottom of the support column (1) is fixedly connected to a base (11), and the bottom of the base (11) is fixedly connected to a first pin (12).

5. The safety protection equipment for road foundation pit construction according to claim 1, characterized in that: The anti-tilting mechanism (4) includes a support component and a drive component (43); the support component is movably connected to the bottom or side of the support column (1) and has a retracted state and an extended state. In the extended state, the support component contacts the ground to enhance support stability. The drive component (43) is disposed inside the support column (1) and is used to drive the support component to switch from the retracted state to the extended state in response to the elastic displacement of the protective net (2).

6. The safety protection equipment for road foundation pit construction according to claim 5, characterized in that: The support assembly includes a housing (41), a sliding block (42), and a support member; the housing (41) is fixedly connected to the support column (1), the sliding block (42) is slidably fitted inside the housing (41), and the support member is fixedly connected to the bottom or side of the sliding block (42); the drive assembly (43) drives the sliding block (42) to slide, so that the support member extends out of the housing (41).

7. The safety protection equipment for road foundation pit construction according to claim 6, characterized in that: The support member is a second pin (44), and the outer shell (41) is fixedly connected to the bottom of the support column (1). The bottom of the outer shell (41) has an opening for the second pin (44) to extend out.

8. The safety protection equipment for road foundation pit construction according to claim 6, characterized in that: The support is a support base (45), the outer shell (41) is fixedly connected to the side of the support column (1) facing the pit, and the opening of the outer shell (41) faces the ground. The support base (45) is fixedly connected to the sliding block (42) through the connecting rod (46).

9. The safety protection equipment for road foundation pit construction according to claim 6, characterized in that: The drive assembly (43) includes an airbag (431), a connecting pipe (432), and a piston block (433); the piston block (433) is fixedly connected to the sliding block (42) and cooperates with the piston of the outer shell (41) to form a pressure chamber; the airbag (431) is fixed inside the support column (1) and corresponds to the inner end of the telescopic rod (31); the connecting pipe (432) connects the airbag (431) and the pressure chamber; when the protective net (2) is impacted, the telescopic rod (31) compresses the airbag (431), and the gas enters the pressure chamber through the connecting pipe (432), pushing the sliding block (42) to drive the support member to extend.

10. The safety protection equipment for road foundation pit construction according to claim 9, characterized in that: A one-way valve (434) is fixedly connected to the connecting pipe (432), and the number of buffer components (3) on each support column (1) is at least two.

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