Mesh type foundation pit protective fence structure

Abstract

The invention provides a mesh type foundation pit protective fence structure, and belongs to the technical field of construction protection measures, the mesh type foundation pit protective fence structure comprises a protective unit, a moving unit and a driving unit, the protective unit comprises a plurality of fixed protective nets and a moving protective net, the plurality of fixed protective nets define a square area with an opening, and the moving protective net is arranged at the opening; the moving unit comprises a base fixedly connected to the ground and a rotating column rotationally connected to the base, the rotating column is fixedly connected with one side of the moving protective net, the rotating column is arranged in the vertical direction, and the central axis of the rotating column serves as a rotating shaft; the driving unit comprises a fixed seat connected to the base, a driving plate and a pneumatic part, the fixed seat is provided with an arc-shaped first air cavity, the first air cavity is coaxial with the rotating column, the driving plate is slidably connected into the first air cavity, the driving plate and the first air cavity form a first closed space, the driving plate is further fixedly connected with the rotating column, and the pneumatic part communicates with the first closed space; the air pump is used for pumping or supplying air into the first closed space. The working efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction protection measures, and in particular relates to a mesh-type foundation pit guardrail structure. Background Art

[0002] With the development of science and technology, fields such as construction are also making rapid progress. At construction sites, guardrails are often installed around foundation pits to prevent safety accidents. However, during construction, monitoring points for displacement and settlement of the foundation pit slope are set up on the slopes to obtain critical data. During monitoring, workers need to enter the guardrails, so the guardrails need to have openable and closable entrances.

[0003] At present, one of the guardrails is generally installed by tying it with steel bars. When entering the guardrail, the staff first unties the tied steel bars, and then removes the guardrail to expose an opening for the staff to enter. After the monitoring is completed, the staff needs to move the guardrail to its original position and then fix it by tying it with steel bars.

[0004] The opening of the guardrail is equipped with a detachable guard net. Every time the staff enters or exits, they need to go through cumbersome steps to open or close the opening, which increases the overall time consumption of the monitoring work and reduces work efficiency. Summary of the Invention

[0005] An embodiment of the present invention provides a mesh-type foundation pit guardrail structure, aiming to improve work efficiency.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a mesh-type foundation pit guardrail structure, comprising: The protection unit includes a plurality of fixed protective nets and a movable protective net, wherein the plurality of fixed protective nets enclose a square area with an opening, and the movable protective net is arranged at the opening; A mobile unit, comprising a base fixed to the ground and a rotating column rotatably connected to the base, wherein the rotating column is fixed to one side of the mobile protective net and is arranged in an up-down direction, and the rotating column has its own central axis as a rotating axis; and The drive unit includes a fixed seat connected to the base, a drive plate and a pneumatic part. The fixed seat is provided with an arc-shaped first air cavity, the first air cavity is coaxial with the rotating column, the drive plate is slidably connected in the first air cavity, the drive plate and the first air cavity form a first closed space, the drive plate is also fixed to the rotating column, and the pneumatic part is connected to the first closed space for pumping or supplying air in the first closed space.

[0007] In a possible implementation, the mesh-type foundation pit guardrail structure further includes an auxiliary unit, and the auxiliary unit includes: Auxiliary pipes are arranged at intervals on the outer circumference of the rotating column, and the auxiliary pipes are provided with avoidance grooves for avoiding the movable guard net; an auxiliary plate, fixed to the auxiliary pipe; and An arc-shaped auxiliary rod is slidably arranged on the auxiliary plate. The auxiliary rod slides along the rotation track of the movable guard net. The auxiliary rod is also fixed to the movable guard net.

[0008] In a possible implementation, the driving unit further includes: A return seat is fixedly connected to the auxiliary plate, and the return seat is provided with a second air cavity; A telescopic sleeve, one end of which is slidably mounted on the return seat, wherein the telescopic sleeve has a telescopic direction perpendicular to the surface of the auxiliary plate; and A sealing plate is fixedly connected to one end of the telescopic sleeve away from the return seat, and the sealing plate abuts against the auxiliary rod. The sealing plate, the telescopic sleeve and the second air cavity constitute a second closed space, and the second closed space is connected to the pneumatic part, and the pneumatic part extracts or supplies air into the second closed space.

[0009] In a possible implementation, a ball is provided at one end of the auxiliary rod away from the movable protective net, and the ball rolls and fits on the sealing plate.

[0010] In a possible implementation, a positioning unit is provided on one side of the auxiliary plate, and the positioning unit includes: Two abutting members are provided on opposite sides of the auxiliary rod, and the connecting line of the two abutting members is parallel to the surface of the auxiliary plate; and A driving member is connected to the pressing member and is used to drive the pressing member to press against the auxiliary rod.

[0011] In a possible implementation, the positioning unit further includes: Two base plates are disposed opposite to each other on both sides of the auxiliary rod, and the connection direction of the two base plates is parallel to the plate surface of the auxiliary plate; and Two positioning airbags form two abutting members, and the two positioning airbags are respectively arranged on opposite sides of the two substrates. The positioning airbags are connected to the driving member, and the driving member is used to pump air into or deliver air into the positioning airbags.

[0012] In a possible implementation, a connecting column is further provided at the opening, the connecting column is arranged opposite to the rotating column, a connecting unit is provided between the connecting column and the movable guard net, and a plurality of connecting holes are opened on the side wall of the movable guard net; The connecting unit includes: A power plate is slidably mounted on the connecting column, and the power plate slides in a horizontal direction; A plurality of plug rods are fixedly connected to the power plate, and the plug rods correspond to the connection holes one by one and are plugged and adapted; and The power member is connected to the power plate and is used to drive the power plate to move.

[0013] In one possible implementation, a power cavity and a plurality of sliding cavities communicating with the outside and the power cavity are defined in the connecting column. The power plate is slidably disposed in the power cavity, and the power plate divides the power cavity into an independent first chamber and a second chamber. The power member is disposed in the second chamber, and the power member is used to pump air into or supply air to the second chamber. The insertion rods are slidably arranged in the sliding cavities in a one-to-one correspondence.

[0014] In a possible implementation, the connecting column is fixedly connected to a limiting plate, and the movable guard net is provided with a limiting groove adapted to the limiting plate.

[0015] In a possible implementation, a first sealing ring is provided between the driving plate and the inner wall of the first air cavity.

[0016] The mesh-type foundation pit guardrail structure provided by the present application, compared with the prior art, increases the air pressure in the first air cavity by supplying air into the first air cavity through a pneumatic part, and the driving plate slides in the first air cavity under the action of positive pressure, thereby driving the driving plate to drive the rotating column to rotate counterclockwise, causing the mobile guardrail to rotate to open the opening; conversely, the air in the first air cavity is extracted by the pneumatic part, causing the pressure in the first air cavity to decrease, and the driving plate slides in the first air cavity under the action of negative pressure, thereby driving the driving plate to drive the rotating column to rotate clockwise, causing the mobile guardrail to rotate to close the opening. The present invention realizes the automatic opening and closing of the mobile guardrail through pneumatic drive, eliminating the need for manual disassembly and steel bar tying, significantly shortening the time required for workers to open and close the guardrail opening, and is easy to operate, reducing the time consumption of monitoring work and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a mesh-type foundation pit guardrail structure according to an embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of part A; Figure 3 A partial cross-sectional view of the fixing base, the first air cavity, and the driving plate used in an embodiment of the present invention; Figure 4 A partial schematic diagram of the auxiliary unit and return seat used in an embodiment of the present invention; Figure 5 A cross-sectional view of the second air cavity and the sealing plate used in an embodiment of the present invention; Figure 6Partial view of positioning unit for the embodiment of the present application; Figure 7 Partial view of the connecting mode between the mobile guardrail and the connecting column for the embodiment of the present application.

[0018] Explanation of reference numerals: 10, guard unit; 101, fixed guard net; 102, mobile guard net; 1021, connecting hole; 1022, limiting groove; 103, opening; 20, mobile unit; 201, base; 202, rotating column; 30, driving unit; 301, fixed seat; 3011, first air cavity; 302, driving plate; 3021, driving rod; 303, return seat; 3031, second air cavity; 304, telescopic sleeve; 305, sealing plate; 40, auxiliary unit; 401, auxiliary pipe; 4011, avoiding groove; 402, auxiliary plate; 403, auxiliary rod; 4031, ball; 50, positioning unit; 501, base plate; 502, positioning air bag; 60, connecting column; 601, power cavity; 6011, first chamber; 6012, second chamber; 602, sliding cavity; 603, limiting plate; 70, connecting unit; 701, power plate; 702, rod body; 7021, accommodating cavity; 703, protrusion; 704, elastic member. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects of the present application more clear, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0020] Please refer to Figure 1 and Figure 7The mesh type foundation pit guardrail structure provided by the present invention is now described. A mesh type foundation pit guardrail structure includes a protection unit 10, a mobile unit 20 and a drive unit 30. The protection unit 10 includes a plurality of fixed guard nets 101 and a mobile guard net 102. The plurality of fixed guard nets 101 form a square area with an opening 103. The mobile guard net 102 is arranged at the opening 103. The mobile unit 20 includes a base 201 fixed to the ground and a rotating column 202 rotatably connected to the base 201. The rotating column 202 is fixed to one side of the mobile guard net 102. The rotating column 202 is arranged in the up and down direction. The column 202 rotates with its own central axis as the axis of rotation; the driving unit 30 includes a fixed seat 301 connected to the base 201, a driving plate 302 and a pneumatic part. The fixed seat 301 is provided with an arc-shaped first air cavity 3011, the first air cavity 3011 is coaxial with the rotating column 202, the driving plate 302 is slidably connected in the first air cavity 3011, the driving plate 302 and the first air cavity 3011 form a first closed space, the driving plate 302 is also fixed to the rotating column 202, and the pneumatic part is connected to the first closed space for pumping or supplying air in the first closed space.

[0021] Specifically, the pneumatic part can be an air pump; a cavity is opened in the base 201, the fixed seat 301 is arranged in the cavity, the fixed seat 301 is fixedly connected to the base 201, the rotating column 202 extends into the cavity, and a driving rod 3021 is fixedly connected between the driving plate 302 and the rotating column 202.

[0022] It should be noted that a camera is provided on the mobile guard net 102, the camera is communicated with the pneumatic parts, and the camera is used to monitor the entry and exit of staff.

[0023] In the mesh-type foundation pit guardrail structure provided in this embodiment, when the camera detects that a staff member is facing the guardrail opening 103 with his front face, the camera transmits an inflation signal to the pneumatic component, and after receiving the inflation signal, the pneumatic component starts to inflate the first air cavity 3011 until the air pressure in the first air cavity 3011 reaches a preset value and the pneumatic component stops working; when the camera detects that a staff member is facing the guardrail opening 103 with his back, the camera transmits a deflation signal to the pneumatic component, and after receiving the deflation signal, the pneumatic component starts to extract the gas in the first air cavity 3011 and stops working until the air pressure in the first air cavity 3011 returns to the initial value.

[0024] Compared with the prior art, the pneumatic component supplies air to the first air cavity 3011, thereby increasing the air pressure within the first air cavity 3011. The drive plate 302 slides within the first air cavity 3011 under the action of positive pressure, thereby driving the drive plate 302 to drive the rotating column 202 to rotate counterclockwise, causing the mobile guardrail 102 to rotate and open the opening 103. Conversely, the pneumatic component removes air from the first air cavity 3011, thereby reducing the pressure within the first air cavity 3011. The drive plate 302 slides within the first air cavity 3011 under the action of negative pressure, thereby driving the drive plate 302 to drive the rotating column 202 to rotate clockwise, causing the mobile guardrail 102 to rotate and close the opening 103. The present invention achieves automatic opening and closing of the mobile guardrail 102 through pneumatic drive, eliminating the need for manual disassembly and steel bar tying. This significantly shortens the time required for workers to open and close the guardrail opening 103, and is easy to operate, reducing the time spent on monitoring work and improving work efficiency.

[0025] In some embodiments, see Figure 2 and Figure 4 The mesh-type foundation pit guardrail structure also includes an auxiliary unit 40, which includes an auxiliary pipe 401, an auxiliary plate 402 and an arc-shaped auxiliary rod 403. The auxiliary pipe 401 is arranged at intervals on the outer periphery of the rotating column 202, and the auxiliary pipe 401 is provided with an avoidance groove 4011 for avoiding the mobile protective net 102; the auxiliary plate 402 is fixed to the auxiliary pipe 401; the auxiliary rod 403 is slidably arranged on the auxiliary plate 402, and the auxiliary rod 403 slides along the rotation trajectory of the mobile protective net 102, and the auxiliary rod 403 is also fixed to the mobile protective net 102.

[0026] When the movable guard net 102 rotates, the auxiliary rod 403 slides along the rotation track of the movable guard net 102, thereby enhancing the rotation stability and preventing the guard net from deflecting or shaking.

[0027] In some embodiments, see Figure 4 and Figure 5 The driving unit 30 also includes a return seat 303, a telescopic sleeve 304 and a sealing plate 305. The return seat 303 is fixedly connected to the auxiliary plate 402, and the return seat 303 is provided with a second air cavity 3031; one end of the telescopic sleeve 304 is slidably arranged on the return seat 303, and the telescopic direction of the telescopic sleeve 304 is perpendicular to the plate surface of the auxiliary plate 402; the sealing plate 305 is fixedly connected to the end of the telescopic sleeve 304 away from the return seat 303, and the sealing plate 305 abuts against the auxiliary rod 403. The sealing plate 305, the telescopic sleeve 304 and the second air cavity 3031 constitute a second closed space, and the second closed space is connected to the pneumatic part, and the pneumatic part extracts or supplies air into the second closed space.

[0028] It should be noted that when the pneumatic element inflates the first enclosed space, it extracts gas from the second enclosed space. When the pneumatic element inflates the second enclosed space, it extracts gas from the first enclosed space. Gas is recycled between the first and second enclosed spaces, reducing gas usage and costs.

[0029] When the staff is about to enter from the opening 103, the first enclosed space is in an inflated state and the first enclosed space is in a positive pressure state. At this time, the second enclosed space is in a deflated state and the second enclosed space is in a negative pressure state, so that the front of the mobile protective net 102 has a thrust and the back of the mobile protective net 102 has a pulling force, thereby the mobile protective net 102 rotates counterclockwise to open the opening 103; after the staff comes out from the opening 103, the first enclosed space is in a deflated state and the first enclosed space is in a negative pressure state. At this time, the second enclosed space is in an inflated state and the second enclosed space is in a positive pressure state, so that the front of the mobile protective net 102 has a pulling force and the back of the mobile protective net 102 has a thrust, thereby the mobile protective net 102 rotates clockwise to close the opening 103.

[0030] During the rotation of the movable guard net 102 , the forces acting on both sides of the movable guard net 102 are in the same direction, which accelerates the rotation speed of the movable guard net 102 , thereby shortening the time required for opening and closing the opening 103 .

[0031] In some embodiments, see Figure 4 A ball 4031 is provided at one end of the auxiliary rod 403 away from the movable protective net 102 , and the ball 4031 rolls and adapts to the sealing plate 305 .

[0032] When the auxiliary rod 403 moves, the ball 4031 rolls on the surface of the sealing plate 305, converting sliding friction into rolling friction, reducing resistance; the rolling contact makes the opening and closing of the guard net more labor-saving and the operation smoother.

[0033] In some embodiments, see Figure 6 A positioning unit 50 is provided on one side of the auxiliary plate 402. The positioning unit 50 includes two clamping members and a driving member. The two clamping members are relatively arranged on both sides of the auxiliary rod 403, and the connecting direction of the two clamping members is parallel to the plate surface of the auxiliary plate 402; the driving member is connected to the clamping member and is used to drive the clamping member to clamp against the auxiliary rod 403.

[0034] Optional, see Figure 6 The positioning unit 50 also includes two substrates 501 and a positioning airbag 502. The two substrates 501 are arranged on both sides of the auxiliary rod 403, and the connection direction of the two substrates 501 is parallel to the plate surface of the auxiliary plate 402; the two positioning airbags 502 form two tightening parts, and the two positioning airbags 502 are respectively arranged on the opposite sides of the two substrates 501. The positioning airbags 502 are connected to the driving part, and the driving part is used to extract or supply air into the positioning airbag 502.

[0035] Specifically, the driving member is an air pump.

[0036] After the mobile protective net 102 rotates counterclockwise to a preset position, when the driving part inflates the positioning airbag 502, the positioning airbag 502 expands and squeezes the auxiliary rod 403, thereby enhancing the stability of the mobile protective net 102 by clamping the auxiliary rod 403; before the mobile protective net 102 rotates counterclockwise, when the driving part deflates the positioning airbag 502, the positioning airbag 502 contracts to release pressure and release the auxiliary rod 403, avoiding interference with the rotation of the mobile protective net 102.

[0037] Another modified implementation of the positioning unit 50 is that the pressing member is a clamping plate, and the driving member is a finger cylinder, and the finger cylinder drives the two clamping plates to move closer to or away from each other.

[0038] After the mobile protective net 102 rotates counterclockwise to a preset position, the driving member starts to drive the two clamps closer to each other until they are tightly pressed against the auxiliary rod 403, thereby enhancing the stability of the mobile protective net 102 by clamping the auxiliary rod 403; before the mobile protective net 102 rotates counterclockwise, the driving member starts to drive the two clamps away from each other, thereby releasing the auxiliary rod 403 to avoid interference with the rotation of the mobile protective net 102.

[0039] In some embodiments, see Figure 2 and Figure 7 A connecting column 60 is also provided at the opening 103. The connecting column 60 is arranged opposite to the rotating column 202. A connecting unit 70 is provided between the connecting column 60 and the movable guard net 102. The side wall of the movable guard net 102 is provided with a plurality of connecting holes 1021; the connecting unit 70 includes a power plate 701, a plurality of plug rods and a power piece. The power plate 701 is slidably arranged on the connecting column 60, and the power plate 701 slides in the horizontal direction; the plurality of plug rods are fixedly connected to the power plate 701, and the plug rods correspond to the connecting holes 1021 one by one and are plugged in and adapted; the power piece is connected to the power plate 701 for driving the power plate 701 to move.

[0040] Optionally, a power chamber 601 and a plurality of sliding chambers 602 connected to the outside and the power chamber 601 are provided in the connecting column 60, a power plate 701 is slidably provided in the power chamber 601, the power plate 701 divides the power chamber 601 into an independent first chamber 6011 and a second chamber 6012, a power member is provided in the second chamber 6012, and the power member is used to pump air or supply air to the second chamber 6012; the insertion rods are slidably provided in the sliding chamber 602 one by one.

[0041] Specifically, a second sealing ring is provided between the power plate 701 and the inner wall of the power chamber 601. The second sealing ring fills the gap between the power plate 701 and the inner wall of the power chamber 601 to prevent gas leakage from the first chamber 6011 or the second chamber 6012 and maintain a stable pressure difference.

[0042] The insertion rod comprises a rod body 702, a protrusion 703 slidingly arranged on the rod body 702, and an elastic member 704 arranged between the rod body 702 and the protrusion 703, the elastic member 704 having a pre-tightening force for moving the protrusion 703 away from the rod body 702.

[0043] Specifically, the rod body 702 is provided with a receiving cavity 7021 at the end thereof, the protrusion 703 is slidingly arranged in the receiving cavity 7021, and one side of the protrusion 703 is provided with a stress surface for extrusion of the moving guard net 102; the power member is a gas pump, the power member is in communication connection with the camera; and the elastic member 704 is a spring.

[0044] When the camera monitors that the front of the staff faces the opening 103, the power member starts to pump out the gas in the second chamber 6012, so that the air pressure in the second chamber 6012 is reduced, and since the air pressure in the first chamber 6011 is greater than that in the second chamber 6012, the power plate 701 will pull out the insertion rod from the connecting hole 1021, so that the moving guard net 102 is separated from the connecting column 60; when the camera monitors that the back of the staff faces the opening 103, the power member starts to pump gas into the second chamber 6012, so that the air pressure in the second chamber 6012 is increased, and since the air pressure in the second chamber 6012 is greater than that in the first chamber 6011, the power plate 701 will pull out the insertion rod, and the moving guard net 102 will extrude the stress surface of the protrusion 703 in the process of rotating to the reset position, so that the protrusion 703 is extruded into the receiving cavity 7021, and when the connecting hole 1021 is aligned with the protrusion 703, the elastic member 704 releases the elastic force to make the protrusion 703 inserted into the connecting hole 1021, so as to fix the moving guard net 102 and the connecting column 60, and enhance the stability of the moving guard net 102.

[0045] Another deformed embodiment of the power member is that the power member can be a telescopic oil cylinder, a hydraulic cylinder, etc., and the movement of the power plate 701 is realized by the telescopic movement of the power member.

[0046] In some embodiments, referring to Figure 7 , the connecting column 60 is fixedly connected with a limiting plate 603, and the moving guard net 102 is provided with a limiting groove 1022 matched with the limiting plate 603.

[0047] When the moving guard net 102 rotates to the reset position, the limiting plate 603 is embedded in the limiting groove 1022, the position of the moving guard net 102 is corrected, the limiting plate 603 cooperates with the limiting groove 1022 to guide the alignment of the moving guard net 102 when it is closed, and the misalignment of the insertion rod and the connecting hole 1021 is avoided.

[0048] In some embodiments, a first sealing ring is arranged between the driving plate 302 and the inner wall of the first gas chamber 3011.

[0049] The first sealing ring fills the gap between the driving plate 302 and the first air cavity 3011 to prevent gas leakage in the first closed space and maintain a stable air pressure difference.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mesh type foundation pit guardrail structure, characterized in that: include: The protection unit includes a plurality of fixed protective nets and a movable protective net, wherein the plurality of fixed protective nets enclose a square area with an opening, and the movable protective net is arranged at the opening; The mobile unit includes a base fixed to the ground and a rotating column rotatably connected to the base, the rotating column being fixed to one side of the mobile protective net, the rotating column being arranged in an up-down direction, and the rotating column having its own central axis as a rotating axis; as well as The drive unit includes a fixed seat connected to the base, a drive plate and a pneumatic part. The fixed seat is provided with an arc-shaped first air cavity, the first air cavity is coaxial with the rotating column, the drive plate is slidably connected in the first air cavity, the drive plate and the first air cavity form a first closed space, the drive plate is also fixed to the rotating column, and the pneumatic part is connected to the first closed space for pumping or supplying air in the first closed space.

2. The mesh type foundation pit guardrail structure according to claim 1, characterized in that: The mesh type foundation pit guardrail structure further includes an auxiliary unit, which includes: Auxiliary pipes are arranged at intervals on the outer circumference of the rotating column, and the auxiliary pipes are provided with avoidance grooves for avoiding the movable guard net; an auxiliary plate, fixed to the auxiliary pipe; and An arc-shaped auxiliary rod is slidably arranged on the auxiliary plate. The auxiliary rod slides along the rotation track of the movable guard net. The auxiliary rod is also fixed to the movable guard net.

3. The mesh type foundation pit guardrail structure according to claim 2, characterized in that: The driving unit further includes: A return seat is fixedly connected to the auxiliary plate, and the return seat is provided with a second air cavity; A telescopic sleeve, one end of which is slidably mounted on the return seat, wherein the telescopic sleeve has a telescopic direction perpendicular to the surface of the auxiliary plate; and A sealing plate is fixedly connected to one end of the telescopic sleeve away from the return seat, and the sealing plate abuts against the auxiliary rod. The sealing plate, the telescopic sleeve and the second air cavity constitute a second closed space, and the second closed space is connected to the pneumatic part, and the pneumatic part extracts or supplies air into the second closed space.

4. The mesh type foundation pit guardrail structure according to claim 3, characterized in that: A ball is provided at one end of the auxiliary rod away from the movable protective net, and the ball rolls and is adapted to fit the sealing plate.

5. The mesh type foundation pit guardrail structure according to claim 2, characterized in that: A positioning unit is provided on one side of the auxiliary plate, and the positioning unit includes: Two abutting members are provided on opposite sides of the auxiliary rod, and the connecting line of the two abutting members is parallel to the surface of the auxiliary plate; and A driving member is connected to the pressing member and is used to drive the pressing member to press against the auxiliary rod.

6. The mesh type foundation pit guardrail structure according to claim 5, characterized in that: The positioning unit further includes: Two base plates are disposed opposite to each other on both sides of the auxiliary rod, and the connection direction of the two base plates is parallel to the plate surface of the auxiliary plate; and Two positioning airbags form two abutting members, and the two positioning airbags are respectively arranged on opposite sides of the two substrates. The positioning airbags are connected to the driving member, and the driving member is used to pump air into or deliver air into the positioning airbags.

7. The mesh type foundation pit guardrail structure according to claim 1, characterized in that: A connecting column is further provided at the opening, the connecting column is arranged opposite to the rotating column, a connecting unit is provided between the connecting column and the movable guard net, and a plurality of connecting holes are opened on the side wall of the movable guard net; The connecting unit includes: A power plate is slidably mounted on the connecting column, and the power plate slides in a horizontal direction; A plurality of plug rods are fixedly connected to the power plate, and the plug rods correspond to the connection holes one by one and are plugged and adapted; and The power member is connected to the power plate and is used to drive the power plate to move.

8. The mesh type foundation pit guardrail structure according to claim 7, characterized in that: A power cavity and a plurality of sliding cavities communicating with the outside and the power cavity are formed in the connecting column. The power plate is slidably mounted in the power cavity. The power plate divides the power cavity into an independent first chamber and a second chamber. The power member is disposed in the second chamber and is used to pump air or supply air to the second chamber. The insertion rods are slidably arranged in the sliding cavities in a one-to-one correspondence.

9. The mesh type foundation pit guardrail structure according to claim 7, characterized in that: The connecting column is fixedly connected to the limiting plate, and the movable guard net is provided with a limiting groove adapted to the limiting plate.

10. The mesh type foundation pit guardrail structure according to claim 1, characterized in that: A first sealing ring is provided between the driving plate and the inner wall of the first air cavity.

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