CN216110778U

CN216110778U - Support and hanger for underground excavation subway station

Info

Publication number: CN216110778U
Application number: CN202122371899.6U
Authority: CN
Inventors: 党智军; 何聪利; 耿开明; 白云龙; 冯超; 杨磊; 郭鹏; 王科科; 刘文新; 姬欧鸣; 尹燕征
Original assignee: China Construction Seventh Engineering Division Corp Ltd
Current assignee: China Construction Seventh Engineering Division Corp Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-03-22
Anticipated expiration: 2031-09-27

Abstract

The utility model provides a support and hanger for an underground excavation subway station, which comprises a telescopic supporting seat, a telescopic supporting column, an arc-shaped baffle and a telescopic structure. Wherein, be equipped with spacing spout along the length direction of construction cross passage on the telescopic supporting seat. The telescopic support column is arranged along the vertical direction and is connected with the limiting sliding groove in a sliding mode. The arc-shaped baffle plate is rotatably arranged at the top end of the telescopic supporting column. The telescopic structure is provided with a fixed end and a telescopic end, the fixed end is hinged with the telescopic supporting column, and the telescopic end is hinged with the arc-shaped baffle plate to drive the arc-shaped baffle plate to rotate in a pitching manner. Along with the excavation of the construction transverse channel, the telescopic supporting seats and the telescopic supporting columns move forwards alternately. The support and hanger for the underground excavation subway station can overcome the defect of low efficiency caused by the separate construction of excavation and support in the prior art, can directly support the rear part along with the excavation in the front part, improves the working efficiency of the underground excavation work, and has higher safety.

Description

Support and hanger for underground excavation subway station

Technical Field

The utility model belongs to the technical field of underground excavation construction auxiliary tools of subways, and particularly relates to a supporting and hanging frame for an underground excavation subway station.

Background

The subway is a rapid, large-traffic and electric power traction rail transit built in cities. The subway line in the central urban area is basically arranged in the underground tunnel, so that underground excavation construction is generally required when the subway station in the urban area is constructed. And (3) during underground excavation construction, firstly, a construction vertical shaft is needed to be made, a construction transverse passage is made from the bottom of the construction vertical shaft, and then the construction transverse passage enters a hole to be made into a subway station main body. The underground excavation method comprises two parts of construction, primary support and secondary lining. The primary support is usually excavation and support at the same time, and generally the excavation is fed for 50cm, and the support method is steel bar grating and sprayed concrete.

In the prior art, during the construction process of the underground excavation section, in order to avoid vibration, most of excavation modes still adopt manual excavation. In the process, because the height of the subway station is large, in the supporting process, the arrangement of the steel bar grating is inconvenient, the steel bar grating needs to be alternately carried out with the excavating process, namely one end of the steel bar grating is excavated and stopped, then the excavation section is supported, the trouble and the labor are wasted, and the working efficiency is seriously reduced. Although the excavation distance is short, the supporting structure is made, the top of the position after excavation and before supporting is still prevented from collapsing or falling down all the time, and the safety is poor.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a support and hanger for an underground excavation subway station, and aims to solve the problems of low construction efficiency and poor safety of early protection in an underground excavation stage of the subway station.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a secretly dig a gallows for subway station, includes:

the telescopic supporting seat is provided with a limiting sliding chute extending along the length direction of the construction transverse channel;

the telescopic supporting column is provided with a sliding connection part limited in the limiting sliding groove, and the sliding connection part can slide along the length direction of the limiting sliding groove;

the arc-shaped baffle is rotatably arranged at the top end of the telescopic supporting column; and

the telescopic structure is provided with a fixed end and a telescopic end, the fixed end is hinged with the telescopic supporting column, and the telescopic end is hinged with the arc-shaped baffle plate so as to drive the arc-shaped baffle plate to rotate in a pitching manner; the arc-shaped baffle is suitable for bearing the top wall of the construction transverse channel under the pushing action of the telescopic structure;

the telescopic supporting seat and the telescopic supporting column can face the ground of the construction transverse channel, and alternate stretching is achieved to enable the telescopic supporting seat and the telescopic supporting column to alternately abut against the ground, so that the telescopic supporting seat and the telescopic supporting column can alternately walk in the length direction of the construction transverse channel.

In one possible implementation, the telescopic support seat includes:

the whole base is in a strip shape, and the limiting sliding groove is arranged on the base along the length direction of the base;

the first lifting assembly is arranged at the bottom of the base and comprises at least four groups of first jacks distributed at the bottom of the base, and each group of first jacks is provided with a first fixed end fixedly connected with the base and a first jacking end vertically extending towards the ground.

In some embodiments, the base is provided with a cavity along the length direction thereof, and sliding openings communicated with the cavity are formed in the upper end surface and the lower end surface of the base, and the sliding openings and the cavity together form a limiting sliding chute for the sliding connection part to be connected in a sliding manner.

In some embodiments/examples/illustrations, the sliding connection comprises:

the sliding plate is limited in the cavity;

and the two groups of sliding structures are respectively arranged on the upper side and the lower side of the sliding plate and are positioned in the cavity, so that the sliding plate and the cavity form relative sliding fit.

In some embodiments/exemplarily/examples, each of the sliding structures includes a pad and a ball; the number of the gaskets is two, and the two gaskets are arranged along the length direction of the construction transverse channel and are respectively positioned on two sides of the sliding plate; a plurality of round holes are formed in each gasket at intervals along the length direction of the construction transverse channel; the plurality of balls are uniformly distributed on the two gaskets and respectively correspond to the round holes one by one;

and arc-shaped rolling grooves for rolling the balls are arranged on the sliding plate and the inner wall of the cavity.

In some embodiments/examples/illustrations, the sled is a rectangular parallelepiped configuration.

In one possible implementation, the telescopic structure is a hydraulic cylinder;

two the stand is close to the position on top and is equipped with the confession the first hinged-support of extending structure fixed end articulated, be equipped with the confession on the cowl the second hinged-support of extending structure extending end articulated.

In this implementation/application embodiment, the telescopic supporting seat and the telescopic supporting pillar are arranged and slidably connected to each other, so that alternate sliding can be realized, and further forward movement along with excavation can be guaranteed. The arc-shaped baffle plates are used for protecting the positions of the excavation and the support in the construction transverse channel, the defect that the efficiency is low due to the fact that the excavation and the support are respectively constructed in the prior art can be overcome, the rear side can be directly supported along with the excavation in the front direction, and the working efficiency of the underground excavation work is improved. The telescopic structure can drive the arc baffle pitching rotation, can adapt to the radian of the arc-shaped surface at the top of the construction transverse channel, and can facilitate the falling of objects at the top, thereby improving the safety of construction.

Drawings

Fig. 1 is a first structural schematic view of a support and hanger for an underground excavation subway station provided by an embodiment of the present invention;

fig. 2 is a structural schematic view of a support and hanger for an underground excavation subway station provided by the embodiment of the present invention;

fig. 3 is a schematic cross-sectional structural view of a base of a support and hanger for an underground excavation subway station according to an embodiment of the present invention;

fig. 4 is an enlarged schematic structural view of a portion a of the support and hanger for the underground excavation subway station shown in fig. 3;

description of reference numerals:

10. a telescopic supporting seat; 11. a base; 111. a cavity; 112. a sliding port; 12. a first jack; 13. A first pressing block; 20. a telescopic support column; 21. a slide plate; 22. a sliding structure; 221. a gasket; 222. a ball bearing; 23. a column; 24. a second jack; 25. a second pressing block; 30. an arc-shaped baffle plate; 31. an arc-shaped drawing plate; 40. a telescopic structure.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 and 2 together, the present invention will now be described with reference to a support and hanger for an underground excavation subway station. The support and hanger for the underground excavation subway station comprises a telescopic supporting seat 10, a telescopic supporting column 20, an arc-shaped baffle 30 and a telescopic structure 40. Wherein, the telescopic supporting seat 10 is used for being arranged on the ground of the construction transverse passage and is close to the side wall of the construction transverse passage. The telescopic supporting seat 10 is provided with a limiting sliding groove along the length direction of the construction transverse channel. The telescopic supporting column 20 is arranged along the vertical direction and has a sliding connection part slidably connected with the limiting sliding groove, and the sliding connection part can slide along the length direction of the limiting sliding groove. The arc-shaped baffle 30 is rotatably arranged at the top end of the telescopic supporting column 20. The telescopic structure 40 is provided with a fixed end and a telescopic end, the fixed end is hinged with the telescopic supporting column 20, the telescopic end is hinged with the arc baffle 30 to drive the arc baffle 30 to rotate in a pitching mode, and the arc baffle 30 is suitable for bearing the top wall of the construction transverse channel under the pushing action of the telescopic structure 40. Along with the excavation of the construction transverse channel, the telescopic supporting seat 10 and the telescopic supporting column 20 can face the ground of the construction transverse channel, and alternately stretch and retract to realize alternate butt joint with the ground, so that the telescopic supporting seat 10 and the telescopic supporting column 20 can alternately walk along the length direction of the construction transverse channel.

Compared with the prior art, the underground excavation gallows for subway station that this embodiment provided has set up telescopic supporting seat 10 and telescopic support column 20 to the two each other is sliding connection, can realize sliding in turn, and then guarantees along with the going on of excavation, moves forward. The arc-shaped baffle 30 protects the positions of the excavation and the support in the construction transverse channel, the defect of low efficiency caused by the respective construction of excavation and support in the prior art can be overcome, the excavation can be carried out along with the front, the support can be directly carried out at the rear, the excavation does not need to be stopped, and the working efficiency of the underground excavation work is improved. Extending structure 40 can drive cowl 30 every single move and rotate, can adapt to the radian of the horizontal passageway top arcwall face of construction, also can be convenient for the landing of the top object of falling simultaneously, and then improves the security of construction, simple structure, and the practicality is strong.

In some embodiments, the telescopic support base 10 may be configured as shown in fig. 1 to 3. Referring to fig. 1 to 3, the telescopic support base 10 includes a base 11 and a first lifting assembly. Wherein, the whole base 11 is long strip-shaped or cuboid appearance structure, a cavity 111 is arranged in the base 11, and the limit sliding groove is arranged on the base 11 along the length direction of the base 11. The first lifting assembly is arranged below the base 11 and comprises at least four first jacks 12, and the first jacks 12 are uniformly distributed on the outer wall of the base 11 and are arranged along the vertical direction; the fixed end of each first jack 12 is fixedly connected with the base 11, and the jacking end of each first jack 12 vertically extends downwards.

The jacking end of each first jack may be provided with a first pressing block 13 for abutting against the ground. The structure of base 11 can guarantee to the antedisplacement work of telescopic support column 20, can guarantee to the spacing work of joint of telescopic support column 20, its simple structure moreover, convenient operation, the bearing capacity is great.

In some embodiments, the limiting sliding groove may be configured as shown in fig. 3. Referring to fig. 3, a horizontal direction perpendicular to a length direction of the construction cross channel is set as a first direction. The cavity 111 is a rectangular parallelepiped cavity; the base 11 is provided with a cavity 111, and the upper and lower end surfaces of the base 11 are provided with sliding openings 112 communicated with the cavity 111, and the sliding openings 112 and the cavity 111 together form a limiting sliding chute for the sliding connection of the telescopic supporting column 20. The width of the cavity 111 is greater than the width of the slide port 112 in the first direction. This kind of structure is mainly in order to guarantee spacing to telescopic support column 20's joint, and then can make holistic gravity transmit mutually between base 11 and telescopic support column 20, guarantees holistic antedisplacement work, simple structure, and the practicality is strong.

In some embodiments, the sliding connection portion may have a structure as shown in fig. 1 to 4. Referring to fig. 1 to 4, the telescopic support column includes a slide plate 21 and a sliding structure 22. Wherein the slide plate 21 is limited in the cavity 111. The two sets of sliding structures 22 are arranged, and the two sets of sliding structures 22 are respectively arranged on the upper side and the lower side of the sliding plate 21 and are located in the cavity 111, so that the sliding plate 21 and the cavity 111 form relative sliding fit. The sliding structure 22 can ensure smooth movement of the slide plate 21.

In some embodiments, the sliding structure 22 may be configured as shown in fig. 4. Referring to fig. 4, a horizontal direction perpendicular to the length direction of the construction cross channel is set as a first direction, and each set of sliding structures 22 includes a spacer 221 and a ball 222; two gaskets 221 are arranged, the two gaskets 221 are arranged along the length direction of the construction cross channel, and the two gaskets 221 are respectively positioned on two sides of the sliding plate 23 along the first direction and between the empty front inner wall and the sliding plate 21; a plurality of round holes are formed in each gasket 221 at intervals along the length direction of the construction transverse channel; the plurality of balls 222 are uniformly distributed on the two spacers 221, and are respectively arranged corresponding to the round holes one by one. Arc rolling grooves for rolling the balls 222 are formed on the sliding plate 21 and the inner wall of the cavity 111.

Because the upright column 23 is higher, and the material is mostly steel, the weight is larger. Therefore, the balls 222 are provided, so that the base 11 and the slide plate 21 can be quickly and easily slid, and the convenience of workers can be improved. In addition, the spacers 221 are provided to separate the balls 222, thereby preventing interaction between the balls 222 and ensuring smooth and stable rolling of the balls 222.

In some embodiments, the slide plate 21 may be configured as shown in FIG. 2. Referring to fig. 2, the slide plate 21 has a rectangular parallelepiped shape, and the width of the slide plate 21 is greater than the width of the slide opening 112 along the first direction. This kind of structure mainly can guarantee that slide 21 can be stable with cavity 111 adaptation joint, can guarantee in the use, base 11 slides on slide 21, perhaps slide 21 slides on base 11, guarantees wholly to feed along the excavation of construction cross aisle.

In some embodiments, the telescopic support column 20 may be configured as shown in fig. 1 to 2. Referring to fig. 1-2, the telescoping support column 20 includes a column 23 and a second lifting assembly. Wherein, the upright column 23 passes through the sliding opening 112 above the base 11 and extends vertically and upwards; the arc-shaped baffle is hinged with the top end of the upright column 23, and the fixed end of the telescopic structure 40 is hinged with the upright column 23. The second lifting assembly comprises at least two second jacks, and each second jack 24 is arranged at intervals along the length direction of the construction cross channel; the fixed end of each second jack 24 is fixedly arranged on the lower plate surface of the sliding plate 21, and penetrates through the sliding opening 112 below the base 11 to vertically extend downwards, and the jacking end of each second jack 24 vertically extends downwards.

The second jack, the jacking end of 24 can set up second briquetting 25, and second briquetting 25 is equipped with two at least, and each second briquetting 25 sets up with each second jack 24 one-to-one, and sets firmly respectively at the jacking end of second jack 24 for the butt is subaerial.

The sliding plate 21 is slidably disposed in the cavity 111 and can be vertically engaged with the base 11, so as to ensure the alternate sliding of the two. Also, by the sliding structure 22, a reduction in frictional resistance between the two can be ensured.

The specific alternate working mode is as follows: when the whole body needs to be moved forward, each second jack 24 can be lifted, the gravity of the whole body is transmitted to the first jack 12 at the moment, and then the telescopic supporting column 20 is pushed forward, so that the telescopic supporting column 20 moves forward for a certain distance. When the telescopic supporting column 20 moves forward, the second jacks 24 are lowered, at this time, each first jack 12 is lifted, the overall gravity is transmitted to the second jacks 24, then the base 11 is pushed forward, and after the base 11 is pushed for a certain distance, the first jack 12 is pushed forward.

This kind of structure can change traditional support frame, along with the drawback of laying the track of antedisplacement, can be more convenient. And telescopic support column 20 is located lateral wall department, can reserve the passageway of pedestrian for the intermediate position of construction cross passage, guarantees that the soil of digging shifts to the outside.

In some embodiments, the upright 23 may be configured as shown in fig. 1-2. Referring to fig. 1 to 2, two columns 23 are provided, and the two columns 23 are respectively located at both ends of the sliding plate 21 along the length direction of the construction cross channel, which can ensure stable support of the arc-shaped baffle 30.

In some embodiments, the above-mentioned telescopic structure 40 may adopt a structure as shown in fig. 1 to 2. Referring to fig. 1-2, the telescoping structure 40 is a hydraulic cylinder. The two upright posts 23 are provided with first hinged supports for the fixed ends of the telescopic structures 40 to be hinged at positions close to the top ends, and the arc baffle 30 is provided with second hinged supports for the telescopic ends of the telescopic structures 40 to be hinged. Because the two upright posts 23 are arranged, and the optimized position of the telescopic structure 40 is between the two upright posts 23, a cross rod can be connected between the two upright posts 23, and a first hinged support is arranged on the cross rod, the structure mainly can ensure the pitching turnover of the arc-shaped baffle plate, so that the arc-shaped baffle plate can be matched with the arc-shaped top surface of the construction transverse channel, and the falling soil, slag and stone can be ensured to fall to the ground.

In some possible implementations/embodiments, the curved baffle 30 is configured as shown in fig. 2. Referring to fig. 2, secretly dig a gallows for subway station still includes arc pull board 31, arc pull board 31 and cowl 30 sliding connection, and this kind of structure can guarantee to shelter from the area through the increase of arc pull board 31 when cowl 30's length is not enough, and then guarantees the safeguard effect.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. Secretly dig subway station and use a gallows, its characterized in that includes:

2. The cradle for the underground excavation subway station as claimed in claim 1, wherein said telescopic support base comprises:

3. The support and hanger for the underground excavated subway station as claimed in claim 2, wherein said base has a cavity along its length direction inside, and sliding openings communicating with said cavity are provided at both upper and lower end surfaces of said base, said sliding openings and said cavity together forming a limit chute for said sliding connection portion to slidably connect.

4. The cradle for an underground excavation subway station as claimed in claim 3, wherein the sliding connection portion comprises:

the sliding plate is limited in the cavity;

5. The cradle for an underground excavation subway station as claimed in claim 4, wherein each set of said sliding structures comprises a spacer and a ball; the number of the gaskets is two, and the two gaskets are arranged along the length direction of the construction transverse channel and are respectively positioned on two sides of the sliding plate; a plurality of round holes are formed in each gasket at intervals along the length direction of the construction transverse channel; the plurality of balls are uniformly distributed on the two gaskets and respectively correspond to the round holes one by one;

6. A support and hanger for an underground excavated subway station as claimed in claim 5, wherein said slide plate has a rectangular parallelepiped shape.

7. The support and hanger for an underground excavation subway station as claimed in claim 1, wherein said telescopic supporting column comprises:

the upright post is connected above the sliding connection part, the arc-shaped baffle is hinged with the top end of the upright post, and the fixed end of the telescopic structure is hinged with the upright post; and

and the second lifting assembly comprises at least two groups of second jacks, and each group of second jacks is provided with a second fixed end fixedly arranged below the sliding connection part and a second jacking end vertically extending towards the ground.

8. The support hanger for the underground excavation subway station as claimed in claim 7, wherein said vertical columns are provided in two groups, and are provided on said sliding connection portion along a length direction of said limiting slide groove.

9. The support and hanger for an underground excavation subway station as claimed in claim 8, wherein said telescopic structure is a hydraulic cylinder;