CN110820753B

CN110820753B - Hydraulic engineering construction excavation anti-collapse device

Info

Publication number: CN110820753B
Application number: CN201911098967.7A
Authority: CN
Inventors: 顾青林; 王艳敏; 孙建立; 李学军; 朱素芬; 赵俊松; 韩明海; 段笑晖; 郭立新; 周永新; 肖振清; 乔爱龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2021-02-09
Anticipated expiration: 2039-11-12
Also published as: CN110820753A

Abstract

The invention discloses an excavation collapse prevention device for hydraulic engineering construction, which comprises a supporting component and a protection component, wherein the supporting component is arranged on the supporting component; the protection assembly comprises an operation platform frame, a steel plate protection cover positioned above the operation platform frame and an electric hoisting mechanism fixedly arranged on the operation platform frame; the operation platform frame is formed by combining a vertical bracket and a transverse panel; a plurality of supporting structures are arranged between the vertical support and the steel plate protective cover; each supporting structure comprises a sliding block, a stop block, a telescopic rod and a compression spring; a plurality of support rods are arranged between the sliding block and the steel plate protective cover; one end of the supporting rod is fixedly connected with the edge of the steel plate protective cover, and the other end of the supporting rod is hinged with the sliding block. The invention provides an operation platform and an operation space for constructors by using the protection assembly, and simultaneously ensures the construction safety of the constructors in the foundation trench by using the protection assembly.

Description

Hydraulic engineering construction excavation anti-collapse device

Technical Field

The invention belongs to the technical field of hydraulic engineering construction equipment, and particularly relates to an excavation collapse prevention device for hydraulic engineering construction.

Background

The footings of existing dams are typically built on the riverbed. During specific construction, a foundation pit of the concrete dam needs to be dug in a riverbed. Because rivers often have flowing water in rivers, the foundation pit geology of a dam often has a spring or a silt layer different from the foundation pit of a house building. The existing temporary construction support mode generally adopts steel pipe piles, steel plate piles, even temporary wall bodies and the like to support the foundation pit of the dam, but due to weather and natural environment factors in different areas, damage and influence of geology on the temporary construction support cannot be completely eliminated, particularly, the temporary construction support is damaged after the foundation pit is subjected to heavy rain, the local collapse of the foundation pit is caused, and technical experts in the industry never give up research on the problems.

The existing foundation pit excavation is generally mechanical excavation, but based on the construction requirements of mechanical excavation and strict over excavation, the excavation and correction of local corner parts and slopes of the foundation pit must be manually carried out. Therefore, the local collapse of the foundation pit is easy to cause safety hazards to workers, and great potential safety hazards are provided. However, for such safety risk sources, the prior art cannot evaluate and control all the risk sources, and only avoids them as much as possible, so that there is a great potential safety hazard.

Disclosure of Invention

The invention aims to provide an excavation collapse prevention device for hydraulic engineering construction, which is used for effectively supporting the local part of a foundation pit, aiming at protecting constructors from being damaged, eliminating danger sources aiming at the constructors and ensuring the safety of the constructors of the foundation pit.

The technical scheme of the invention is as follows: the utility model provides a hydraulic engineering construction excavation prevents device that collapses which characterized in that: comprises a supporting component (2) and a protection component (3); the number of the supporting assemblies (2) is two, each supporting assembly (2) comprises a cross beam (21) and two vertical beams (22), and the two vertical beams (22) are respectively hinged to two ends of the cross beam (21); a foot plate (24) is arranged at one end of the vertical beam (22) far away from the cross beam (21) through a connecting piece, a plurality of fixing holes which are arranged in a matrix form are formed in the foot plate (24), and a steel chisel (23) is correspondingly inserted into each fixing hole; two cross beams (21) of the two support assemblies (2) are fixed on a plane through two connecting rods (4) which are arranged in a crossed manner; the ends of the two connecting rods (4) are respectively fixedly connected with the ends of the cross beam (21), and the two supporting components (2) are fixed through the two connecting rods (4) which are arranged in a crossed manner; the connecting piece is a guide rail structure (25), the guide rail structure (25) comprises a guide rail beam (253) and a double-wheel clamping mechanism, and the section of the guide rail beam (253) is I-shaped; the double-wheel clamping mechanism comprises an n-shaped clamping block (251) and two steel wheels (252); the two steel wheels (252) are respectively and rotatably connected to the left inner side face and the right inner side face of the n-shaped clamping block (251), the two steel wheels (252) are both positioned in the middle of the section of the steel rail beam, and the wheel surface of each steel wheel (252) is abutted to the upper side face of the bottom of the steel rail beam; the rail beam is fixedly connected to the foot plate (24) through bolts, and the far end of the vertical beam (22) is rotatably connected with the upper part of the n-shaped clamping block (251);

the protection assembly (3) comprises an operation platform frame (35), a steel plate protection cover (31) positioned above the operation platform frame (35) and an electric hoisting mechanism (33) fixedly installed on the operation platform frame (35); the operation platform frame (35) is formed by combining a vertical bracket (351) and a transverse panel (352); a plurality of supporting structures (36) are arranged between the vertical support (351) and the steel plate protective cover (31); each supporting structure (36) comprises a sliding block (361), a stop block (362), a telescopic rod (364) and a compression spring (363); the sliding block (361) is vertically connected with the vertical bracket (351) in a sliding manner; the stop block (362) is positioned above the sliding block (361), and the stop block (362) is fixed with the vertical support (351); the slider (361) is positioned above the transverse panel (352); the telescopic rod (364) is vertically arranged between the transverse panel (352) and the sliding block (361), the upper end of the telescopic rod is fixedly connected with the sliding block (361), and the lower end of the telescopic rod (364) is fixed with the transverse panel (352); the compression spring (363) is sleeved on the telescopic rod (364), and two ends of the compression spring (363) are respectively abutted against the sliding block (361) and the transverse panel (352);

a plurality of support rods (32) are arranged between the sliding block (361) and the steel plate protective cover (31), each support rod (32) corresponds to one support structure (36), and all the support rods (32) and all the support structures (36) are uniformly distributed along the circumferential direction of the steel plate protective cover (31); one end of the supporting rod (32) is fixedly connected with the edge of the steel plate protective cover (31), and the other end of the supporting rod (32) is hinged with the sliding block (361); the electric hoisting mechanism (33) comprises a motor, a roller brake device, a hoisting roller and a steel wire rope; an output shaft of the motor is coaxially fixed with the winding drum through a drum brake device; one end of the steel wire rope is wound on the winding drum, and the other end of the steel wire rope penetrates through the steel plate protective cover (31) upwards and then is fixedly connected with the cross beam (21) of the supporting component (2); the edge of the steel plate protective cover (31) protrudes outwards from the outer part of the operation platform frame (35).

Further: the top of the steel plate protective cover is in a shape of an upward convex sphere.

Further: the vertical support of the operation platform frame is hinged with a turning plate.

Be equipped with a screw thread pull rod (26) between two perpendicular roof beams (22) of same supporting component (2), the both ends of screw thread pull rod (26) run through respectively and correspond perpendicular roof beam (22) of end, and two ends punishment of screw thread pull rod (26) do not revolve and twist and have nut (27), nut (27) are locked screw thread pull rod (26), screw thread pull rod (26) restrict the angle that opens of two perpendicular roof beams (22) of supporting component (2), and the screw thread pull rod is locked and is adjusted two angles that open of erecting the roof beam.

The beneficial effect of this scheme: the invention discloses an excavation collapse prevention device for hydraulic engineering construction, which aims to ensure the safety of constructors who finish a foundation trench and prevent the constructors from being threatened even if the local collapse of the foundation trench occurs when the foundation trench of a dam is excavated for the hydraulic engineering. The invention discloses an excavation collapse prevention device which comprises a support assembly and a protection assembly. Utilize protection component to provide operation platform and operating space for constructor, utilize protection component guarantee constructor's construction safety in the foundation trench simultaneously. The supporting component is used as a supporting structure of the protection component, on one hand, the upper and lower supports are provided for the protection component, namely, the protection component is safely hoisted to the bottom of the base groove; on the other hand can transport protection component along the length direction of foundation trench to make protection component can transport to each position of foundation trench, impel constructor to rely on protection component to accomplish the work of repairing of each position of foundation trench.

The specific structure of the protection assembly comprises an operation platform frame, a steel plate protection cover, an electric hoisting mechanism and the like. The operation platform frame provides operating space for constructor, utilizes the vertical support of operation platform frame to support protection component simultaneously to utilize vertical support in order to make the settling in the foundation ditch bottom that protection component can be stable. The steel plate protective cover is further supported on the operation platform frame through the supporting rod and the supporting structure. Under normal conditions, the steel plate protective cover jacks up through the elastic action of the compression spring, so that constructors can stand in the operation platform frame, namely stand below the steel plate protective cover. When the soil that is in fact or collapses falls on the steel sheet protection casing, utilize the steel sheet protection casing to carry out physics to the soil that is in fact or collapses and block, the steel sheet protection casing compresses down compression spring simultaneously, and then utilizes compression spring to absorb the energy of reality or soil, has formed the protection to constructor. An organic integral protection and energy absorption structure is formed by the steel plate protection cover, the supporting rod and the supporting structure, so that the safety of constructors is ensured.

The electric hoisting mechanism in the scheme maintains that the protection assembly can vertically move up and down along the support assembly and is kept stable in the air when needed, and the operation is simple. Meanwhile, under the action of the guide rail beam and the guide rail structure, the supporting assembly can move along the length direction of the foundation trench, so that the protection assembly in the scheme can play the maximum function, the protection assembly finishes the finishing of the whole foundation trench under the condition that the foot plate and the steel chisel are not frequently installed, the constructors are safely transported to any position of the foundation trench, the construction time is saved, and the foundation trench is conveniently finished manually.

Drawings

FIG. 1 is a schematic plan view of the support assembly and shield assembly of the present invention;

FIG. 2 is a schematic structural view of a support assembly and a shield assembly according to the present invention;

FIG. 3 is a schematic view of the guide rail structure of the present invention;

fig. 4 is a schematic view of the mounting of the support structure of the present invention.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 1, 2, 3 and 4, the excavation collapse prevention device for the hydraulic engineering construction comprises a support component 2 and a protection component 3; the number of the supporting assemblies 2 is two, each supporting assembly 2 comprises a cross beam 21 and two vertical beams 22, and the two vertical beams 22 are respectively hinged to two ends of the cross beam 21. The end of the vertical beam 22 far away from the cross beam 21 is provided with a foot plate 24 through a connecting piece, the foot plate 24 is provided with a plurality of fixing holes which are arranged in a matrix, and each fixing hole is correspondingly inserted with a steel chisel 23. The connecting member described in this case includes a connecting plate, a universal joint, a cross buckle, etc., but as an embodiment of the present invention, the connecting member in the present preferred embodiment employs a guide rail structure 25 as the connecting member. The connecting piece is a guide rail structure 25, the guide rail structure 25 comprises a guide rail beam 253 and a double-wheel clamping mechanism, wherein the section of the guide rail beam 253 is I-shaped; the double-wheel clamping mechanism comprises an n-shaped clamping block 251 and two steel wheels 252; the two steel wheels 252 are respectively and rotatably connected to the left inner side face and the right inner side face of the n-shaped clamping block 251, the two steel wheels 252 are both positioned in the middle of the section of the steel rail beam, and the wheel surface of each steel wheel 252 is abutted to the upper side face of the bottom of the steel rail beam; the rail beam is fixedly connected to the foot plate 24 through bolts, and the far end of the vertical beam 22 is rotatably connected with the upper part of the n-shaped clamping block 251. Two cross beams 21 of the two supporting components 2 are fixed on a plane through two connecting rods 4 which are arranged in a crossed manner; the ends of the two connecting rods 4 are respectively fixedly connected with the ends of the cross beam 21, and the two supporting components 2 are fixed through the two connecting rods 4 which are arranged in a crossed manner.

The protection assembly 3 comprises an operation platform frame 35, a steel plate protection cover 31 positioned above the operation platform frame 35 and an electric hoisting mechanism 33, wherein the electric hoisting mechanism 33 is installed on the operation platform frame 35, and the operation platform frame 35 is formed by welding and fixing a vertical support 351 and a transverse panel 352. A plurality of supporting structures 36 are further arranged between the vertical support 351 and the steel plate protective cover 31. In the present case, the description of each support structure 36 is as follows: a sliding block 361 is connected to the vertical support 351 in an axial sliding manner, a stop block 362 is fixedly connected to the vertical support 351, and the stop block 362 is located above the sliding block 361; the sliding block 361 is located above the transverse panel 352, and a vertical telescopic rod 364 is arranged between the sliding block 361 and the transverse panel 352. The upper end of the telescopic rod 364 is fixedly connected with the sliding block 361, and the lower end of the telescopic rod 364 is fixed with the transverse panel 352. A compression spring 363 is axially sleeved on the telescopic rod 364, and under the elastic force of the compression spring 363, the sliding block 361 slides upwards along the vertical support 351, but the sliding block 361 is resisted by the stopper 362, and the upwards sliding stroke of the sliding block 361 is limited by the stopper 362.

For the scheme, a plurality of support rods 32 are further arranged between the sliding blocks 361 of the support structures 36 and the steel plate protective cover 31, each support rod 32 corresponds to one support structure 36, and all the support rods 32 and all the support structures 36 are uniformly distributed along the circumferential direction of the steel plate protective cover 31. One end of the support rod 32 is fixedly connected with the edge of the steel plate shield 31, and the other end of the support rod 32 is hinged with the sliding block 361. The electric lifting mechanism 33 may be of conventional construction including a motor, a drum brake, a hoisting drum and a wire rope. The output shaft of the motor is coaxially fixed with the winding drum through a drum brake device; one end of the steel wire rope is wound on the winding drum, and the other end of the steel wire rope penetrates through the steel plate protective cover 31 upwards and then is fixedly connected with the cross beam 21 of the supporting component 2; the motor drive hoist cylinder is rotatory to park fixedly through cylinder brake equipment, belong to the common technique among the prior art, like hoisting accessory on the tower crane, or the hoisting accessory on the portal crane all adopt above-mentioned structure. In the scheme, when the motor drives the winding drum to rotate, the drum braking device does not work; when the motor stops rotating, the roller brake device fixes the hoisting roller to prevent the hoisting roller from rotating.

As shown in fig. 2, the top of the steel plate protecting cover 31 is in the shape of a sphere protruding upward, and the edge of the steel plate protecting cover 31 protrudes outward from the operation platform frame 35. The working principle of the present invention will be described in the following with specific embodiments: as shown in fig. 1, two beams 21 of two support assemblies 2 are fixed on a plane by two cross-arranged connecting rods 3, and the ends of the two connecting rods 3 are respectively fixedly connected with the ends of the beams 21. The two supporting components 2 are fixed through two connecting rods 3 which are arranged in a crossed mode. Foot plates 24 are arranged on two sides of the section of the excavated base groove 1, and the foot plates 24 are fixed on the upper groove surface of the base groove 1 by using steel rods 23. Two guide rail beams 253 are respectively fixed on two sides of the base groove 1, and the guide rail beams 253 are fixed on the foot plate 24 through bolts. As shown in fig. 3, the two steel wheels 252 of the n-shaped clamping block 251 are clamped to both sides of the middle portion of the rail beam 253, so that the n-shaped clamping block 251 is not shifted to the left and right, and the n-shaped clamping block 251 is also moved in the longitudinal direction of the rail beam 253. After the far ends of the vertical beams 22 of the support assemblies 2 are rotatably connected with the n-shaped clamping blocks 251, the two support assemblies 2 can not shift left and right along the section of the excavation base groove 1 and can also move along the length direction of the excavation base groove 1. Specifically, the steel wheels 252 roll along the length direction of the guide rail beam 253, so as to drive the two support assemblies 2 to synchronously move along the length direction of the guide rail beam 253.

In operation, a worker stands on the transverse panel 352 on the work platform frame 35. The electric hoisting mechanism 33 is started, the protection component 3 is hoisted to the bottom of the excavation foundation trench 1 through the electric hoisting mechanism 33, then a constructor stands on the transverse panel 352 to excavate and repair the excavation foundation trench 1, the lower end of the vertical support 351 is in contact with the bottom surface of the excavation foundation trench 1 at the moment, and then the position of the operation platform frame 35 is fixed. After the excavation and maintenance are finished, the electric hoisting mechanism 33 is started again, the operation platform frame 35 is separated from the bottom of the excavation base groove 1, then the support component 2 is pushed to move along the length direction of the guide rail beam 253 by using an excavator or manpower, and the protection component 3 is pushed along the length direction of the excavation base groove 1, so that the excavation and maintenance of the next excavation base groove 1 are finished. In the scheme, for the excavation base groove 1 with a nonlinear plane, a plurality of guide rail beams 253 can be arranged along the length direction of the excavation base groove 1, the ends of the guide rail beams 253 are connected or locked together, and then the support assembly 2 is pushed to convey the operation platform frame 35 to any position needing excavation and finishing. Since a number of distal ends are pivotally connected to the n-shaped clamping block 251, the support member 2 in this case can move not only along the linear rail beams 253 but also along the curved or broken line rail beams 253.

Since the supporting component 2 and the protecting component 3 can be reused at a plurality of construction sites, the section of the foundation trench 1 excavated at each construction site is not necessarily the same. For this purpose, in the preferred embodiment, a flap 34 is also articulated to the vertical support 351 of the operating platform frame 35. When the distance between the transverse panel 352 and the side wall of the excavated foundation trench 1 is relatively long, the turning plate 34 can be turned downwards, and a constructor can stand on the turning plate 34 to trim the excavated foundation trench 1. Meanwhile, in order to make the structural connection of the supporting component 2 more stable, in the present case, a threaded pull rod 26 is further arranged between two vertical beams 22 of the same supporting component 2, two ends of the threaded pull rod 26 respectively penetrate through one vertical beam 22 of the corresponding end, and the threaded pull rod 26 is respectively locked by nuts 27 at two ends of the threaded pull rod 26, the opening angle of the two vertical beams 22 of the supporting component 2 can be limited by the threaded pull rod 26, and the opening angle of the two vertical beams 22 is locked and adjusted, so that the vertical beams 22 and the guide rail structure 25 adapt to matching, and meanwhile adapt to the base grooves 1 with different section widths.

Description of the safety issues: the steel plate protective cover 31 positioned above the operation platform frame 35 can shield wind and rain for constructors on one hand; on the other hand, when the foundation trench 1 is locally collapsed, the steel plate protective cover 31 can block falling rocks or mud from above and on the top surface of the foundation trench 1, and prevent the falling rocks or mud from being buried and falling into the operation platform frame 35. When falling rocks or earth drop to steel sheet protection casing 31 on, steel sheet protection casing 31 passes through bracing piece 32 with the energy transfer of falling rocks or earth to slider 361, slider 361 slides down, and then compresses compression spring 363, until the energy of falling rocks or earth is offset by compression spring 363, can not cause the injury to the constructor who is located the safety protection casing below. In this case, it is necessary to provide the telescopic rod 364, because the telescopic rod 364 supports and guides the compression spring 363, the compression spring 363 can perform the energy dissipation function in the vertical direction. When the electric hoisting mechanism is pulled by the steel wire rope to lift the operation platform frame 35 upwards, the steel plate protective cover 31 is lifted upwards synchronously.

The above description is only exemplary of the present invention and should not be taken as limiting, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a hydraulic engineering construction excavation prevents device that collapses which characterized in that: comprises a supporting component (2) and a protection component (3); the number of the supporting assemblies (2) is two, each supporting assembly (2) comprises a cross beam (21) and two vertical beams (22), and the two vertical beams (22) are respectively hinged to two ends of the cross beam (21); a foot plate (24) is arranged at one end of the vertical beam (22) far away from the cross beam (21) through a connecting piece, a plurality of fixing holes which are arranged in a matrix form are formed in the foot plate (24), and a steel chisel (23) is correspondingly inserted into each fixing hole; two cross beams (21) of the two support assemblies (2) are fixed on a plane through two connecting rods (4) which are arranged in a crossed manner; the ends of the two connecting rods (4) are respectively fixedly connected with the ends of the cross beam (21), and the two supporting components (2) are fixed through the two connecting rods (4) which are arranged in a crossed manner; the connecting piece is a guide rail structure (25), the guide rail structure (25) comprises a guide rail beam (253) and a double-wheel clamping mechanism, and the section of the guide rail beam (253) is I-shaped; the double-wheel clamping mechanism comprises an n-shaped clamping block (251) and two steel wheels (252); the two steel wheels (252) are respectively and rotatably connected to the left inner side face and the right inner side face of the n-shaped clamping block (251), the two steel wheels (252) are both positioned in the middle of the section of the steel rail beam, and the wheel surface of each steel wheel (252) is abutted to the upper side face of the bottom of the steel rail beam; the rail beam is fixedly connected to the foot plate (24) through bolts, and the far end of the vertical beam (22) is rotatably connected with the upper part of the n-shaped clamping block (251);

2. The hydraulic engineering construction excavation collapse prevention device according to claim 1, wherein: the top of the steel plate protective cover (31) is in a shape of an upward convex sphere.

3. The hydraulic engineering construction excavation collapse prevention device according to claim 1, wherein: a turning plate (34) is hinged to a vertical support (351) of the operating platform frame (35).

4. The hydraulic engineering construction excavation collapse prevention device according to claim 1, wherein: be equipped with a screw thread pull rod (26) between two perpendicular roof beams (22) of same supporting component (2), the both ends of screw thread pull rod (26) run through respectively and correspond perpendicular roof beam (22) of end, and two ends punishment of screw thread pull rod (26) are do not twisted soon and are had nut (27), nut (27) are locked screw thread pull rod (26), screw thread pull rod (26) restrict the angle that opens of two perpendicular roof beams (22) of supporting component (2).