Municipal pipeline foundation pit collapse protection device

Abstract

The invention relates to the technical field of municipal engineering construction safety protection, in particular to a municipal pipeline foundation pit collapse protection device which comprises two oppositely-arranged protection plates, the tops of the protection plates are connected through a foldable cross beam, the foldable cross beam is used for supporting the two protection plates, and when the foldable cross beam is unfolded, the two protection plates are vertically arranged in parallel; and in the collapse protection state, after the foldable cross beam is folded, the upper ends of the two protection plates draw close to form a triangular protection area. A certain anti-collapse effect can be achieved through interaction of the foldable cross beams and the protection plates, the protection plates can form a triangular protection space even during collapse, construction of field operators is not affected to the maximum extent, and the construction efficiency and safety are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of municipal engineering construction safety protection, in particular to a municipal pipeline foundation pit collapse protection device. BACKGROUND

[0002] Municipal road construction plays a vital role in urban economic development, and municipal pipeline engineering is an indispensable foundation construction (such as rainwater, sewage, etc. pipeline) in municipal road engineering construction. Influenced by local soil and surrounding environment, many situations such as collapse often occur during construction, endangering the safety of on-site construction personnel. The present traditional anti-collapse measures are as follows: 1. Strictly excavate the pipe trench according to technical requirements 1) Before excavation, technical personnel should brief the construction personnel and inspect and accept the pipe trench; 2) On-site construction workers should strictly excavate according to technical requirements, and should not arbitrarily change the slope ratio; 3) When the pipe trench cannot be normally excavated due to surrounding environment restrictions, a special construction plan should be developed, and construction should be carried out after approval to ensure safety; 4) Local coordination should be strengthened, and the width of the operation zone should not be arbitrarily reduced due to land acquisition coordination, which should not affect the normal slope of the pipe trench; 5) The slope of the pipe trench should be determined according to the soil type, mechanical properties and pipe trench excavation depth; 6) For pipe trenches with a depth of more than 5 meters, appropriate slope slowing, support or step excavation measures can be taken according to the actual situation.

[0003] 2. Measures to reduce excessive dynamic and static load 1) During excavation, the earthwork should be piled on the opposite side of the trench away from the pipe trench, and the distance between the earthwork and the pipe trench should be at least 0.5 meters; 2) When the amount of earthwork is large, it must be piled away from the trench or transported outside for disposal; 3) After the rain, the pipe trench should be checked for erosion and immersion, and measures such as increasing the slope ratio and eliminating static load should be taken to prevent collapse; 4) When the equipment is running, it should be kept at least 1 meter away from the trench, and after the construction equipment is stopped, the operator should enter the construction site only after observing that there is no risk of collapse.

[0004] 3. Risk reduction measures for water immersion 1) After the pipe trench is immersed in rainwater and groundwater for a long time, risk analysis should be carried out again before work is prepared after the accumulated water is removed; 2) The pipe trench should be excavated before the pipeline is laid, and the time the pipe trench is left should be shortened as much as possible; 3) When excavating in spring, the excavated pipe trench should be protected from freezing and thawing, and the larger frozen soil blocks on the trench should be removed and the slope should be appropriately increased; 4) When excavating in winter, the hard surface layer of frozen soil should be removed to avoid blind expansion of the operation pit and formation of a funnel-shaped space.

[0005] 4. Other risk reduction measures 1) when the whole trench cannot be excavated normally due to the surrounding environment, the trench wall around the working point must meet the slope ratio requirement; 2) if necessary, protective support or protective cage and other measures are taken to make personnel work in a safe and closed environment; 3) when working in the trench, a monitor must be left on the trench to observe the trench and the surrounding safety at any time, and when a problem is found, the working personnel in the trench are notified to avoid, escape and first aid; 4) enough escape ladders are provided for working in the trench, emergency passages are set, and enough emergency equipment and materials are provided on site; 5) an emergency rescue plan for collapse is formulated, emergency measures are formulated, and regular training and exercises are carried out.

[0006] The traditional anti-collapse measures and their complexity, although improving the safety factor of pipeline construction work to some extent, cannot fundamentally solve the safety problem of pipeline construction work, and consume a lot of manpower and material resources for supervision and maintenance, which causes great headache to construction personnel.

[0007] There is an urgent need for a protective device with simple structure, easy to install and transport, and capable of automatically forming a protection space when collapsing, to improve construction safety and work efficiency. SUMMARY

[0008] In view of the deficiencies of the prior art, the purpose of the present application is to provide a municipal pipeline foundation pit collapse protection device to solve the problems of complicated operation and limited protection effect of the existing anti-collapse measures.

[0009] The technical scheme adopted by the present application to solve its technical problems is: A municipal pipeline foundation pit collapse protection device, comprising two oppositely arranged protection plates, the top of the protection plate being connected by a foldable cross beam, the foldable cross beam being used to support the two protection plates, when the foldable cross beam is unfolded, the two protection plates are arranged vertically and in parallel to form a working channel, and in the collapse protection state, the two protection plates are closed at the upper end after the foldable cross beam is folded to form a triangular protection area.

[0010] Compared with the prior art, the beneficial effects of the present application are: The application effectively bears and disperses the lateral earth pressure of the foundation pit during the construction process through the cooperation of the foldable cross beam structure and the protection plates, realizes the active support of the foundation pit wall, and plays a good effect of preventing collapse. When an accidental collapse occurs, the folding of the cross beam promotes the two protection plates to quickly fold inward and form a stable triangular protection space. This triangular structure has excellent mechanical stability and can provide a reliable life safety area for the operating personnel under the impact of collapse, and its self-adaptive deformation mechanism avoids the secondary injury risk caused by the traditional rigid support. The design realizes the organic unification of the protection function and the construction efficiency, that is, the protection plates maintain an open state during normal operation to ensure sufficient operating space and smooth construction process; when collapse occurs, it is instantly converted into a protection mode, which significantly improves the safety guarantee level and operation continuity of the municipal pipeline foundation pit construction.

[0011] As preferred, the further technical solution of the application is: Preferably, the foldable cross beam comprises two cross bars, the two cross bars are connected through a hinge one, and the outer ends of the two cross bars are respectively hinged to the corresponding side protection plates through a hinge two.

[0012] Preferably, a plurality of air holes are respectively formed in the plate surface of each protection plate.

[0013] Preferably, a conical base is arranged at each end of the bottom of each protection plate, and the conical base is inserted into the bottom of the foundation pit at the position of the protection plate.

[0014] Preferably, a foldable support rod is arranged between the bottom of each cross bar and the inner side surface of the corresponding side protection plate. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the working side view of the assembled application; Figure 2 is the front side view of the assembled application; Figure 3 is the side view of the assembled application; Figure 4 is the top view of the assembled application; Figure 5 is the working view when the application collapses; BRIEF DESCRIPTION OF DRAWINGS: 1, protection plate; 2, foldable cross beam; 21, cross bar; 22, hinge one; 23, hinge two; 24, air hole; 25, conical base; 3, foldable support rod. DETAILED DESCRIPTION

[0016] The application will be further described below in combination with specific embodiments, and the purpose is only to better understand the content of the application, therefore, the examples do not limit the protection scope of the application.

[0017] AsFigures 1 to 5 As shown, a municipal pipeline foundation pit collapse protection device is composed of two oppositely arranged protection plates 1, and a foldable cross beam 2 is arranged between the two protection plates 1, the foldable cross beam 2 is arranged at the middle position of the top of the protection plate 1, when the foldable cross beam 2 is unfolded, the two protection plates 1 are arranged upright and in parallel, and the foldable cross beam 2 is used for supporting the two protection plates 1; in the collapse protection state, the upper ends of the two protection plates 1 are close to each other to form a triangular protection area after the foldable cross beam 2 is folded.

[0018] The foldable cross beam 2 is composed of two cross bars 21, the two cross bars 21 are connected through a hinge one 22, and the outer ends of the two cross bars 21 are respectively hinged to the protection plates 1 on the corresponding sides through a hinge two 23. The bottom of each cross bar 21 at the end close to the protection plate 1 is respectively connected with the protection plate 1 through a foldable supporting rod 3, the foldable supporting rod 3 is unfolded and used for supporting the cross bar 21 connected therewith, and the foldable supporting rod 3 is folded to release the support on the cross bar 21.

[0019] A plurality of air holes 24 are respectively arranged on the plate surfaces of each protection plate 1.

[0020] The bottom of each protection plate 1 is fixedly connected with a conical base 25 at both ends, and the conical base 25 is inserted into the bottom of the foundation pit at the position where the protection plate 1 is arranged.

[0021] Before construction, the foldable cross beam 2 and the foldable supporting rod 3 of the device are respectively in the folded state, and the two protection plates 1 are close to each other; when used for foundation pit construction, the device is transported into the foundation pit as a whole, the foldable cross beam 2 is unfolded, the two protection plates 1 are symmetrically placed in the foundation pit, then the conical base 25 is inserted into the soil and fixed, the foldable supporting rod 3 is unfolded to support the foldable cross beam 2, so that the foldable cross beam 2 is kept horizontal, thereby supporting the two protection plates 1 and keeping the two protection plates 1 in the upright state, and forming a working channel.

[0022] When the collapse occurs, the soil on both sides of the foundation pit extrudes the protection plate 1 in the direction, so that the foldable supporting rod 3 is folded under stress to release the locking on the two ends of the foldable cross beam 2, the foldable cross beam 2 is also folded, the upper ends of the two protection plates 1 are close to each other and support each other, and a triangular protection area is formed.

[0023] The device has the advantages of simple structure, convenient use, and applicability to various municipal pipeline foundation pit construction sites, and can form a working space in the foundation pit by using the added protection plates, foldable cross beams and foldable supporting rods, can effectively reduce the earth pressure, and can protect the safety of the personnel in the working channel.

[0024] The above description is only a preferred embodiment of the present application, and does not limit the scope of the present application, and any equivalent changes made according to the content of the specification and the drawings of the present application are included in the scope of the present application.

Claims

1. A municipal pipe trench collapse protection device, characterized by: The two opposite protection plates are connected by a foldable cross beam, the foldable cross beam is used for supporting the two protection plates, when the foldable cross beam is unfolded, the two protection plates are vertically and parallel arranged to form a working channel, and in the collapse protection state, the two upper ends of the two protection plates are close to each other to form a triangular protection area after the foldable cross beam is folded.

2. The municipal pipe trench collapse protection device of claim 1, wherein: The foldable cross beam comprises two cross bars, the two cross bars are connected by a hinge one, and the outer ends of the two cross bars are respectively hinged to the protection plates on the corresponding sides by hinges two.

3. The municipal pipe trench collapse protection device of claim 1, wherein: A plurality of air holes are formed in the plate surface of each protection plate.

4. The municipal pipe trench collapse protection apparatus of claim 1, wherein: Tapered bases are arranged at the two ends of the bottom of each protection plate, and the tapered bases are inserted into the bottom of the foundation pit at the positions of the protection plates.

5. The municipal pipe trench collapse protection apparatus of claim 2, wherein: Foldable supporting rods are arranged between the bottom of each cross bar and the inner side of the protection plate on the corresponding side.

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