Buckle type tunnel primary support concrete slicking device

Abstract

The utility model discloses a buckle type tunnel primary support concrete slicking device, which relates to the technical field of tunnel construction design, and comprises a slicking mechanism and a wet spraying manipulator, the slicking mechanism comprises a scraper, a seamless steel pipe, a fixed steel bar and a fixed connecting plate, a scraping plate and a fixed connecting plate in the slicking mechanism are integrally welded into a whole through a seamless steel pipe and a fixed steel bar according to a triangular structure, and meanwhile, the fixed connecting plate on the slicking mechanism is connected with the wet spraying manipulator through a quick connector clamp, so that the slicking mechanism is firmly mounted and is not easy to fall off. According to the utility model, the quick joint clamp and the wet spraying manipulator are mounted in a buckling manner; the device is simple in structure, firm in installation and not prone to falling off, and the situation that the scraping effect is affected and the work efficiency is reduced due to bending of external force during construction is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction design, in particular to a snap-type tunnel primary support concrete scraping device. Background Technique

[0002] With the continuous development of tunnel construction design technology, the requirement for the flatness after concrete construction is also getting higher and higher. In the prior art, it is necessary to solve the problem that in the construction of tunnel primary support concrete, the previous scraping device adopts a socket structure, that is, it is directly inserted into the polyurethane nozzle of the wet shotcreting robot to scrape the primary support concrete. However, this device is easy to fall off during construction. At the same time, since the polyurethane nozzle is made of plastic material and has insufficient stiffness, the nozzle of this device is easily bent by external force during scraping construction, seriously affecting the scraping effect and work efficiency, and easily causing damage to the nozzle. Content of the Utility Model

[0003] The purpose of the utility model is to provide a snap-type tunnel primary support concrete scraping device. The scraping device uses a quick connector to connect the scraping mechanism and the wet shotcreting robot in a snap manner. When installing this device, only the nozzle of the wet shotcreting robot needs to be removed, and it can be installed in a snap manner with the wet shotcreting robot using a quick connector; this device is firmly installed and not easy to fall off, and will not be bent by external force during construction, affecting the scraping effect and reducing work efficiency.

[0004] To achieve the above purpose, the utility model provides a snap-type tunnel primary support concrete scraping device, which includes a scraping mechanism and a wet shotcreting robot. The scraping mechanism includes a scraper, a seamless steel pipe, a fixed steel bar and a fixed connecting plate. One end of the seamless steel pipe is welded in the middle of the scraper, the other end of the seamless steel pipe is welded and fixed to the fixed connecting plate. The fixed steel bars are arranged on both sides of the seamless steel pipe and are welded and fixed to the scraper. The fixed connecting plate is connected to the wet shotcreting robot through a quick connector.

[0005] Preferably, the seamless steel pipe, the fixed steel bar and the scraper are integrally welded into a triangular structure.

[0006] Preferably, the material of the fixed steel bar is φ20 deformed steel bar, and the formed shape of the fixed steel bar is a "︺" vertical turtle shell type.

[0007] Preferably, an installation end for installing a nozzle is provided on the wet shotcreting robot. The diameter and thickness of the fixed connecting plate are the same as those of the installation end, and the material of the fixed connecting plate is carbon steel plate.

[0008] Preferably, the quick connector is of a snap-type structure and is provided in two parts.

[0009] Therefore, the utility model adopts a snap - type tunnel primary support concrete scraping device with the above - mentioned structure. Compared with the prior art, it has the following beneficial effects:

[0010] The advantages of the utility model are that the snap - type scraping device is simple to process and can use local materials; through the snap - type installation between the quick - coupling card and the wet - shotcreting manipulator, it is firmly installed and not easy to fall off, realizing convenient installation and disassembly, simple and convenient operation, remarkable scraping effect, and improved work efficiency; the scraping device ensures the flatness of the primary support, achieving the effect of improving quality and efficiency, and further improving the laying quality of geotextiles and waterproof boards and the construction quality of secondary lining concrete, ensuring operation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall front - view installation structure of an embodiment of a snap - type tunnel primary support concrete scraping device of the utility model;

[0012] Figure 2 It is a schematic diagram of the overall side - view installation structure of an embodiment of a snap - type tunnel primary support concrete scraping device of the utility model;

[0013] Figure 3 It is a front - view schematic diagram of the scraping mechanism of an embodiment of a snap - type tunnel primary support concrete scraping device of the utility model;

[0014] Figure 4 It is a side - view schematic diagram of the scraping structure of an embodiment of a snap - type tunnel primary support concrete scraping device of the utility model;

[0015] Figure 5 It is a schematic diagram of the fixed - steel - bar structure of an embodiment of a snap - type tunnel primary support concrete scraping device of the utility model;

[0016] REFERENCE NUMERALS

[0017] 1. Scraping mechanism; 11. Scraper; 12. Seamless steel pipe; 13. Fixed steel bar; 14. Fixed connecting plate; 2. Quick - coupling card; 3. Wet - shotcreting manipulator; 31. Installation end. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions of the present utility model will be further described below with reference to the drawings and embodiments.

[0019] Unless otherwise defined, the technical terms or scientific terms used in this utility model shall have the ordinary meanings as understood by those with ordinary skills in the field to which this utility model belongs. The words such as "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Words such as "upper", "lower", "left", "right" etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0020] Embodiment

[0021] As Figure 1 - Figure 2 As shown, a structure of a snap-type tunnel primary support concrete scraping device of the present utility model includes a scraping mechanism 1 and a wet spraying manipulator 3. A scraper 11, a seamless steel pipe 12, a fixing steel bar 13 and a fixing connecting plate 14 are provided in the scraping mechanism 1. One end of the seamless steel pipe 12 is welded in the middle on the scraper 11, and the other end of the seamless steel pipe 12 is fixedly welded to the fixing connecting plate 14. The fixing steel bars 13 are arranged on both sides of the seamless steel pipe 12 and are fixedly welded to the scraper 11. The fixing connecting plate 14 in the scraping mechanism 1 is connected to the wet spraying manipulator 3 through a quick joint clamp 2. At the same time, the diameter and thickness of the fixing connecting plate 14 and the mounting end 31 provided on the wet spraying manipulator 3 are equal. The quick joint clamp 2 is of a snap-type structure and is provided with an upper half and a lower half. The fixing connecting plate 14 and the wet spraying manipulator 3 are installed in a snap-type manner, realizing convenient installation and disassembly, smooth operation, and remarkable scraping efficiency, ensuring that the flatness of the primary support reaches the effect of improving quality and increasing efficiency, thereby further ensuring the laying quality of the geotextile and waterproof board and the construction quality of the secondary lining concrete.

[0022] As Figure 3 - Figure 4As shown in the figure, in the screeding structure of the present utility model, the screeding mechanism 1 is welded by a fixed connecting plate 14, a scraper 11, a seamless steel pipe 12 and two fixed steel bars 13; the whole screeding mechanism 1 is welded into a triangular structure, wherein the fixed connecting plate 14 and the scraper 11 are centered and welded to both ends of the seamless steel pipe 12, using full welding; and the two sides of the seamless steel pipe 12 between the seamless steel pipe 12 and the scraper 11 are respectively strengthened and welded by fixed steel bars 13. The side of the fixed steel bar 13 with an angle of 131° is welded to the seamless steel pipe 12, and its position is at the seamless steel pipe 12, 63 mm below the bottom of the fixed connecting plate 14; the side of the fixed steel bar 13 with an angle of 139° is welded to the scraper 11, and its position is 215 mm from the end of the scraper 11. The weld lengths are both 50 mm, using double-sided welding. The seamless steel pipe 12 is processed from a φ42 steel pipe, and the seamless steel pipe 12 is 300 mm long; as Figure 5 shown, the fixed steel bar 13 is processed from a φ20 threaded steel bar, in the shape of "︺", that is, a vertical turtle shell shape. The total length of the fixed steel bar 13 is 384 mm, with a middle length of 284 mm and both sides being 50 mm long. The included angles with the middle section are 139° on one side and 131° on the other side; the fixed connecting plate 14 is processed from a 20-mm-thick steel plate into a circle with a radius of 57 mm; the scraper 11 is processed from a 4-mm-thick steel plate into a rectangular steel plate with a length of 1000 mm and a width of 100 mm. In this way, the fixed connecting plate 14 and the scraper 11 are welded into a whole through the seamless steel pipe 12 and the fixed steel bars 13 according to a triangular structure, effectively improving the connection stiffness of the screeding mechanism 1 and ensuring that the screeding mechanism 1 is not easily bent and damaged during screeding construction.

[0023] Therefore, the present utility model adopts a snap-type tunnel primary support concrete screeding device with the above structure. Its advantages are that the scraper and the fixed connecting plate in the screeding mechanism are integrally welded into one body through a seamless steel pipe and fixed steel bars according to a triangular structure, and the fixed connecting plate on the screeding mechanism is snap-connected to the wet shotcreting manipulator through a quick connector, realizing convenient installation and disassembly, simple and handy operation, ensuring remarkable screeding effect of the screeding mechanism and improving work efficiency. At the same time, the present utility model only needs to be snap-connected to the wet shotcreting manipulator through a quick connector; the structure is simple, and the device is firmly installed and not easily detached, and will not be bent by external forces during construction, affecting the screeding effect and reducing work efficiency.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions of the present utility model or make equivalent substitutions, and these modifications or equivalent substitutions cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A snap-type tunnel primary support concrete scraping device, characterized in that: It includes a screeding mechanism and a wet shotcreting manipulator. The screeding mechanism includes a scraper, a seamless steel pipe, fixed steel bars, and a fixed connecting plate. One end of the seamless steel pipe is welded in the middle on the scraper, the other end of the seamless steel pipe is fixedly welded to the fixed connecting plate. The fixed steel bars are arranged on both sides of the seamless steel pipe and are fixedly welded to the scraper. The fixed connecting plate is connected to the wet shotcreting manipulator through a quick connector clamp.

2. The snap-type tunnel primary support concrete scraping device according to claim 1, characterized in that: The seamless steel pipe, the fixed steel bars and the scraper are integrally welded into a triangular structure.

3. The snap - type initial - support concrete scraping device for tunnels according to claim 2, wherein: The material of the fixed steel bars is φ20 threaded steel bars, and the formed shape of the fixed steel bars is a "︺”-shaped vertical turtle shell type.

4. A snap-type tunnel primary support concrete scraping device according to claim 3, characterized in that: An installation end for installing a nozzle is provided on the wet shotcreting manipulator. The diameter and thickness of the fixed connecting plate are the same as those of the installation end. The material of the fixed connecting plate is carbon steel plate.

5. The snap - type initial - support concrete scraping device for tunnels according to claim 4, wherein: The quick connector clamp is arranged in a snap-fastener structure and is set into two parts.

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