CN215633073U

CN215633073U - Subway civil engineering shield constructs construction protective structure

Info

Publication number: CN215633073U
Application number: CN202121914410.9U
Authority: CN
Inventors: 陈丹华; 蔡子卓; 张勇新; 田浩东; 张�浩; 董洪鑫; 张晓川; 刘洋
Original assignee: China Construction Seventh Engineering Division Corp Ltd; Transportation Construction Co Ltd of China Construction Seventh Engineering Division Corp Ltd
Current assignee: China Construction Seventh Engineering Division Corp Ltd; Transportation Construction Co Ltd of China Construction Seventh Engineering Division Corp Ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-01-25
Anticipated expiration: 2031-08-16

Abstract

The utility model provides a subway civil engineering shield construction protection structure, which solves the problem that the subway civil engineering shield construction protection structure in the prior art is not strong in stability; the technical scheme includes that the device comprises a base, wherein a supporting and fixing column is respectively placed on the left side and the right side of the base, flat plates are fixed on the supporting and fixing column, the two flat plates are respectively fixed with a U-shaped outer protective shell, the opening of the outer protective shell faces the base, a U-shaped protective frame is placed on the inner side of the outer protective shell, the opening ends of the protective frame and the outer protective shell can be lifted up along with the supporting and fixing column, a plurality of side frames are uniformly distributed on the protective frame, each side frame consists of two U-shaped plates, each rectangular cavity consists of two U-shaped plates, a buffer block is arranged in each rectangular cavity, a groove is formed in one side, close to the outer protective shell, of each buffer block, and a buffer support is placed in each groove; the utility model has novel concept, smart structure and strong practicability, can buffer the impact force of falling objects, and can restore the protection frame and the outer protection shell after being deformed by the impact force.

Description

Subway civil engineering shield constructs construction protective structure

Technical Field

The utility model relates to the technical field of subway shields, in particular to a subway civil engineering shield construction protection structure.

Background

The subway shield is an important construction technology in urban subway construction, is a construction method for underground excavation of tunnels, and adopts a subway shield machine to dig underground, so that excavation and lining operation of tunnels can be safely carried out in the machine while preventing collapse of soft foundation excavation surfaces or keeping the excavation surfaces stable.

The current subway civil engineering shield constructs construction protective structure stability is not strong enough, because the impact that has thing such as rubble at any time when the underground excavation tunnel causes protective structure impaired, in case the impaired inside personnel safety of structure will receive the threat.

Disclosure of Invention

In view of the above situation, in order to solve the problems in the prior art, the present invention aims to provide a shield structure for civil engineering of subway, which solves the problem in the prior art that the shield structure for civil engineering of subway has insufficient stability.

The technical scheme for solving the problem is as follows: the protection frame is fixed on the two flat plates, the opening of the outer protection shell faces the base, a U-shaped protection frame is placed on the inner side of the outer protection shell, the opening of the protection frame faces the base, the protection frame is fixed on the two flat plates at the same time, the two supporting and fixing columns are fixedly connected with the outer protection shell and the protection frame at corresponding positions through bolts, the outer protection shell and the protection frame can automatically recover when being extruded, an interval is formed between the outer protection shell and the protection frame, and the opening ends of the protection frame and the outer protection shell can simultaneously rise along with the supporting and fixing columns;

the equipartition has a plurality of side bearers on the lateral surface of protective frame, every side bearer comprises two disconnected U-shaped boards, two U-shaped board openings are relative, and a rectangle chamber is constituteed to the inside of two U-shaped boards, the buffer block of a rectangle has all been placed in every rectangle intracavity, be equipped with the recess on the side that the buffer block is close to outer protecting crust, the buffering support of a V-arrangement has all been placed in the recess, the opening of buffering support all faces the protective frame, and the bottom of buffering support is dull and stereotyped, the both sides board of buffering support and the recess lateral wall in close contact with that corresponds the side, and the bottom of buffering support pushes up on outer protecting crust's medial surface through the cushion, when outer protecting crust's lateral surface received the striking, the buffering support can extrude the buffer block to both sides.

The protection frame medial surface on the left and right sides all be fixed with a horizontally dead lever, equal high setting such as two dead levers, the left and right sides of protection frame medial surface bottom all is fixed with a vertical montant, be fixed with a plurality of horizontal poles between two montants, the bottom of two montants all articulates there is a connecting rod, the other end of connecting rod articulates on the free end of corresponding side dead lever, the left and right sides on the protection frame medial surface all is fixed with a fixed block, the fixed block all is located the dead lever top that corresponds the side, be equipped with a cylinder on every fixed block, the bottom of cylinder articulates on the fixed block that corresponds the side, the expansion end of cylinder piston rod all articulates at the connecting rod middle part.

And the base right below the two fixing rods is fixed with a height adjusting mechanism, the height adjusting mechanism comprises a hydraulic oil cylinder, a supporting rod is fixed on the hydraulic oil cylinder, and the other end of the supporting rod is fixed on the fixing rods.

A U-shaped rubber buffer layer is sleeved on the outer side face of the protective frame, and a U-shaped plate of the side frame is fixed on the buffer layer.

The utility model discloses a buffer structure, including outer protective housing and protective frame, the equipartition have a plurality of telescopic links between outer protective housing and the protective frame, the both ends of telescopic link are fixed respectively on the lateral surface of buffer layer and the medial surface of outer protective housing, all the cover has a buffer spring on the telescopic link, buffer spring pushes away the both ends of telescopic link and makes its extension, and buffer spring makes the both ends top of telescopic link on buffer layer and outer protective housing.

The utility model has novel concept, smart structure and strong practicability, can buffer the impact force of falling objects such as broken stones and the like, and can restore the protective frame and the outer protective shell after being deformed by the impact force.

Drawings

Fig. 1 is a front view of the present invention.

FIG. 2 is an enlarged view of FIG. 1 taken from a partial view A.

Fig. 3 is a combined structure view of the vertical rod, the fixing rod, the connecting rod and the cylinder in fig. 1.

Fig. 4 is an enlarged view of fig. 1 taken from a partial view C.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As can be seen from fig. 1 to 4, the utility model includes a rectangular base 1, a supporting and fixing column 2 is respectively placed on the left and right sides of the upper surface of the base 1, a flat plate is fixed on the bottom of each supporting and fixing column 2, the flat plate is placed on the upper surface of the base 1, the two flat plates are fixed with a same U-shaped outer protective shell 3, the opening of the outer protective shell 3 faces the base 1, a U-shaped protective frame 4 is placed on the inner side of the outer protective shell 3, the opening of the protective frame 4 faces the base 1, the protective frame 4 is simultaneously fixed on the two flat plates, the two supporting and fixing columns 2 are fixedly connected with the outer protective shell 3 and the protective frame 4 at corresponding positions through bolts, the outer protective shell 3 and the protective frame 4 can automatically recover when being squeezed, an interval is formed between the outer protective shell 3 and the protective frame 4, and the opening end of the protective frame 4 and the outer protective shell 3 can simultaneously rise along with the supporting and fixing column 2;

a plurality of side frames 5 are uniformly distributed on the outer side face of the protective frame 4, each side frame 5 is composed of two unconnected U-shaped plates, the openings of the two U-shaped plates are opposite, a rectangular cavity is formed inside the two U-shaped plates, a rectangular buffer block 6 is placed in each rectangular cavity, a groove is formed in one side face, close to the outer protective shell 3, of the buffer block 6, a V-shaped buffer support 7 is placed in each groove, the openings of the buffer support 7 face towards the protective frame 4, the bottom of the buffer support 7 is flat, two side plates of the buffer support 7 are in close contact with the groove side wall of the corresponding side, the bottom of the buffer support 7 is supported on the inner side face of the outer protective shell 3 through a cushion block, when the outer side face of the outer protective shell 3 is impacted, the buffer support 7 can extrude the buffer block 6 towards two sides.

The left side and the right side of the inner side surface of the protective frame 4 are both fixed with a horizontal fixed rod 8, the two fixed rods 8 are arranged at equal height, the left side and the right side of the bottom of the inner side surface of the protective frame 4 are both fixed with a vertical rod 10, a plurality of cross rods 11 are fixed between the two vertical rods 10, the bottom ends of the two vertical rods 10 are both hinged with a connecting rod 12, the other end of the connecting rod 12 is hinged on the free end of the fixed rod 8 at the corresponding side, the left side and the right side of the inner side surface of the protective frame 4 are both fixed with a fixed block 13, the fixed blocks 13 are both positioned above the fixed rods 8 at the corresponding side, each fixed block 13 is provided with an air cylinder 14, the bottom of the air cylinder 14 is hinged on the fixed block 13 at the corresponding side, the movable end of the piston rod of the air cylinder 14 is hinged in the middle part of the connecting rod 12, when the protective frame 4 is subjected to concave deformation by impact force, the piston rod of the air cylinder 14 is elongated and buffers the impact force, and after the impact force disappears, the piston rod of the air cylinder 14 begins to contract due to air pressure, and the air cylinder 14 restores the concave protective frame 4 through the fixing rod 8 and the vertical rod 10.

And a height adjusting mechanism 15 is fixed on the base 1 under the two fixing rods 8, the height adjusting mechanism 15 comprises a hydraulic oil cylinder, a supporting rod is fixed on the hydraulic oil cylinder, the other end of the supporting rod is fixed on the fixing rod 8, the hydraulic oil cylinder is controlled to extend, and the hydraulic oil cylinder can jack the protective frame 4 and the outer protective shell 3 upwards and lift the protective frame through the supporting rod and the fixing rod 8.

A U-shaped rubber buffer layer 16 is sleeved on the outer side face of the protective frame 4, a U-shaped plate of the side frame 5 is fixed on the buffer layer 16, and after the outer protective shell 3 is impacted, the impact force can be transmitted to the protective frame 4 after being buffered on the buffer layer 16.

The equipartition have a plurality of telescopic links 17 between outer protecting crust 3 and the protecting frame 4, the both ends of telescopic link 17 are fixed respectively on the lateral surface of buffer layer 16 and the medial surface of outer protecting crust 3, all overlap on the telescopic link 17 and have a buffer spring 18, buffer spring 18 pushes away the both ends of telescopic link 17 and makes its extension, and buffer spring 18 makes the both ends top of telescopic link 17 on buffer layer 16 and outer protecting crust 3.

When the utility model is used, a base 1 is placed on the ground in a subway tunnel, a support rod is pushed to move upwards by controlling the extension of a piston rod of a hydraulic oil cylinder through a hydraulic oil cylinder of an adjusting height mechanism 15, an outer protective shell 3, a protective frame 4 and a supporting and fixing column 2 are simultaneously moved upwards to a working height through a fixing rod 8, when the outer surface of the outer protective shell 3 is impacted by heavy objects such as gravels, the impact force on the outer protective shell 3 is transmitted to a buffer layer 16 on the protective frame 4 through a telescopic rod 17 and a buffer spring 18 and a buffer support 7, the outer protective shell 3 is concave downwards under the impact force, the outer protective shell 3 compresses the telescopic rod 17 and the buffer spring 18 to reduce the impact force, the buffer support 7 is extruded by the outer protective shell 3 through a cushion block, the bottom of the buffer support 7 is extruded by the extrusion force, so that side plates of the buffer support 7 are expanded to two sides, the buffer block 6 is extruded when the side plates are expanded, the buffer block 6 transmits impact force to the bottom of the U-shaped plate on the side frame 5, and the U-shaped plate is fixed on one side plate on the buffer layer 16, so that the impact force is reduced;

the reduced impact force is transmitted to the protective frame 4, so that the protective frame 4 is concave, the protective frame 4 drives the vertical rod 10 to move downwards when concave, the vertical rod 10 swings the connecting rod 12 downwards under the supporting action of the fixing rod 8, the piston rod of the air cylinder 14 is pulled out and extended, the reduced impact force is buffered and reduced again, and finally the residual impact force is transmitted to the hydraulic oil cylinder by the fixing rod 8 to be subjected to buffering until the impact force disappears;

because the inside atmospheric pressure of cylinder 14 is owing to be less than external atmospheric pressure, external atmospheric pressure is in retrieving cylinder 14 piston rod compression in, swing connecting rod 12 when cylinder 14 piston rod is retrieved, connecting rod 12 promotes montant 10 upwards, montant 10 moves up and restores recessed protecting frame 4 and outer protecting crust 3, because buffer block 6, buffer support 7 and buffer spring 18 all have the elasticity, after the impact force is absorbed and disappears, buffer block 6, buffer support 7 and buffer spring 18, and telescopic link 17 automatic recovery to the state when not receiving the impact force.

The device has the advantages that:

1. according to the utility model, the buffer block 6, the side frame 5 and the buffer support 7 are arranged between the outer protective shell 3 and the protective frame 4, so that the impact force applied to the outer protective shell 3 is buffered and reduced through the buffer block 6 and the buffer support 7, meanwhile, the buffer spring 18 and the telescopic rod 17 buffer and reduce the impact force, most of the impact force can be buffered, the reduced impact force is buffered through the buffer layer 16, the telescopic rod 17 of the air cylinder 14 stretches to generate air pressure difference, the impact force is buffered and reduced again, finally, the residual impact force is transmitted to the support rod and the hydraulic oil cylinder, the impact force is completely buffered and dissipated, the impact force is buffered and reduced through a multi-layer effective buffer structure, the support strength of the whole structure is further enhanced, the stability of the protective structure is realized, and the practicability is strong.

2. The height adjusting mechanism 15 is used for pushing the supporting and fixing column 2, the protective frame 4, the outer protective shell 3 and the like to move upwards, the height of the protective structure is adjusted, the supporting and fixing column 2 enhances the stability of the protective frame 4, the outer protective shell 3 and the like, the use range is wide, and the device can be flexibly adjusted in height and is suitable for different working environments.

3. The utility model realizes the expansion of the piston rod of the air cylinder 14 due to the air pressure difference, and the expansion of the buffer spring 18, the buffer block 6 and the buffer bracket 7, realizes the restoration of the device through the expansion piece after the impact force is applied, and enhances the stability of the device.

Claims

1. A civil shield construction protection structure comprises a rectangular base (1) and is characterized in that a supporting and fixing column (2) is placed on each of the left side and the right side of the base (1), a flat plate is fixed at the bottom of each supporting and fixing column (2), the flat plate is placed on the upper surface of the base (1), the two flat plates are fixed with an outer protection shell (3) in the same U shape, the opening of the outer protection shell (3) faces the base (1), a U-shaped protection frame (4) is placed on the inner side of the outer protection shell (3), the opening of the protection frame (4) faces the base (1), the protection frames (4) are simultaneously fixed on the two flat plates, the two supporting and fixing columns (2) are fixedly connected with the outer protection shell (3) and the protection frame (4) at corresponding positions through bolts, and the outer protection shell (3) and the protection frame (4) can automatically recover when being extruded, an interval is arranged between the outer protective shell (3) and the protective frame (4), and the open ends of the protective frame (4) and the outer protective shell (3) can be lifted along with the supporting and fixing column (2);

a plurality of side frames (5) are uniformly distributed on the outer side surface of the protective frame (4), each side frame (5) consists of two unconnected U-shaped plates, the openings of the two U-shaped plates are opposite, a rectangular cavity is formed inside the two U-shaped plates, a rectangular buffer block (6) is arranged in each rectangular cavity, a groove is arranged on one side surface of each buffer block (6) close to the outer protective shell (3), a V-shaped buffer support (7) is arranged in each groove, the openings of the buffer supports (7) face the protective frame (4), the bottom of the buffer support (7) is a flat plate, two side plates of the buffer support (7) are tightly contacted with the side wall of the groove at the corresponding side, and the bottom of the buffer support (7) is supported on the inner side surface of the outer protective shell (3) through the cushion block, and when the outer side surface of the outer protective shell (3) is impacted, the buffer support (7) can extrude the buffer block (6) to two sides.

2. The civil shield construction protection structure according to claim 1, wherein the left and right sides of the inner side surface of the protection frame (4) are respectively fixed with a horizontal fixing rod (8), and the two fixing rods (8) are arranged at the same height;

the left and right sides of protection frame (4) medial surface bottom all is fixed with a vertical montant (10), be fixed with a plurality of horizontal poles (11) between two montants (10), the bottom of two montants (10) all articulates there is a connecting rod (12), the other end of connecting rod (12) articulates on the free end of corresponding side dead lever (8), the left and right sides on protection frame (4) medial surface all is fixed with a fixed block (13), fixed block (13) all are located dead lever (8) top that corresponds the side, be equipped with one cylinder (14) on every fixed block (13), the bottom of cylinder (14) articulates on fixed block (13) that corresponds the side, the expansion end of cylinder (14) piston rod all articulates at connecting rod (12) middle part.

3. The civil shield construction protective structure according to claim 2, wherein the base (1) right below the two fixing rods (8) is fixed with a height adjusting mechanism (15), the height adjusting mechanism (15) comprises a hydraulic oil cylinder, a support rod is fixed on the hydraulic oil cylinder, and the other end of the support rod is fixed on the fixing rod (8).

4. The civil shield construction protection structure according to claim 1, wherein the outer side surface of the protection frame (4) is sleeved with a U-shaped rubber buffer layer (16), and the U-shaped plate of the side frame (5) is fixed on the buffer layer (16).

5. The civil shield construction protection structure according to claim 4, wherein a plurality of telescopic rods (17) are uniformly distributed between the outer protection shell (3) and the protection frame (4), two ends of each telescopic rod (17) are respectively fixed on the outer side surface of the buffer layer (16) and the inner side surface of the outer protection shell (3), each telescopic rod (17) is sleeved with a buffer spring (18), each buffer spring (18) pushes two ends of each telescopic rod (17) to extend, and each buffer spring (18) enables two ends of each telescopic rod (17) to be propped against the buffer layer (16) and the outer protection shell (3).