Tunnel shotcrete scraper joint

Abstract

The utility model discloses a joint of a tunnel shotcrete scraper. The joint comprises a mounting plate, the connecting plate and the positioning plate are connected to the other side of the mounting plate through a supporting rod, and the extension plate is rotatably connected with the positioning plate and connected with the mounting plate through a movable mechanism; the scraping plate is arranged at the end, far away from the positioning plate, of the extension plate, and the movable mechanism controls the relative angle between the extension plate and the positioning plate so that the scraping plate can be attached to the primary supporting faces with different angles. The utility model has the advantages that the angle of the scraper can be changed, and the included angle between the surface of the scraper and the horizontal plane can be adjusted through the expansion and contraction of the hydraulic oil cylinder, so that the scraper can be better attached to primary supporting surfaces with different angles. The scraper can be mounted on a movable arm of a construction machine, is simple in structure and convenient to operate, and effectively improves the leveling working efficiency of a primary supporting surface in a tunnel.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction tools, and particularly relates to a tunnel shotcrete scraping knife joint. Background Art

[0002] In tunnel construction, the flatness of the primary shotcrete in the tunnel represents whether the surface of the shotcrete is flat and smooth and meets the specification requirements, which directly affects the construction quality of subsequent processes and is an important indicator to ensure the service life of the tunnel. The flatness of the primary support is greatly affected by factors such as the technical ability of construction personnel and the thickness of the concrete, and is a key item for quality control in the primary support construction of the tunnel. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a tunnel shotcrete scraping knife joint according to the deficiencies of the above-mentioned prior art, and an adjustable-angle scraping knife is used to adapt to the primary support surfaces at different angles in the tunnel.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A tunnel shotcrete scraping knife joint, which includes:

[0006] A mounting plate;

[0007] A connecting plate, connected to one side of the mounting plate to connect the mounting plate with the robotic arm of external equipment;

[0008] A positioning plate, connected to the other side of the mounting plate through a support rod,

[0009] An extension plate, rotatably connected to the positioning plate and connected to the mounting plate through a moving mechanism;

[0010] A scraping plate, arranged at the end of the extension plate far from the positioning plate, wherein

[0011] The moving mechanism makes the scraping plate fit the primary support surfaces at different angles by controlling the relative angle between the extension plate and the positioning plate.

[0012] Optionally, the moving mechanism includes a hydraulic cylinder, and both ends of the hydraulic cylinder are rotatably connected to the mounting plate and the extension plate respectively.

[0013] Optionally, the extension plate is provided with a first connecting ear plate, a first connecting hole is opened in the first connecting ear plate, and one end of the cylinder block of the hydraulic cylinder is rotatably connected to the first connecting ear plate through a first pin shaft passing through the first connecting hole.

[0014] Optionally, the mounting plate is provided with a second connecting ear plate, a second connecting hole is formed in the second connecting ear plate, and one end of the telescopic arm of the hydraulic cylinder is rotatably connected to the second connecting ear plate through a second pin shaft passing through the second connecting hole.

[0015] Optionally, the positioning plate is provided with a third connecting ear plate, a third connecting hole is formed in the third connecting ear plate, and one end of the extension plate is rotatably connected to the positioning plate through a third pin shaft passing through the third connecting hole.

[0016] Optionally, the number of the extension plates is three, and they are evenly distributed in the length direction of the positioning plate, and the scraping plate is connected to the same side of the three extension plates.

[0017] Optionally, one end of the extension plate connected to the scraping plate is bent downward, and one end of the extension plate connected to the positioning plate is straight.

[0018] Optionally, a connecting rib is installed between two adjacent extension plates.

[0019] Optionally, the hydraulic cylinder is connected to a control system through an electric wire.

[0020] The advantages of the present utility model are as follows:

[0021] The scraping knife of the present utility model can realize the change of the angle, and adjust the included angle between the scraping plate surface and the horizontal plane through the telescoping of the hydraulic cylinder, so as to better fit the primary support surface at different angles. The scraping knife can be installed on the movable arm of the construction machinery. The scraping knife of the present utility model has a simple structure and convenient operation, and effectively improves the leveling work efficiency of the primary support surface in the tunnel. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the tunnel shotcrete scraping knife joint of the present utility model;

[0023] Figure 2 It is a schematic bottom structure diagram of the tunnel shotcrete scraping knife joint of the present utility model. Detailed Embodiment

[0024] Each mark in the figure is respectively: 1, mounting plate; 2, connecting plate; 3, positioning plate; 4, support rod; 5, extension plate; 6, scraping plate; 7, connecting rib; 8, hydraulic cylinder; 11, first connecting ear plate; 12, first pin shaft; 21, second connecting ear plate; 22, second pin shaft; 31, third connecting ear plate; 32, third pin shaft.

[0025] Embodiment: Please refer to Figure 1 and Figure 2As shown in the figure, a tunneling shotcrete scraper joint of an embodiment is shown, which includes a mounting plate 1; a connecting plate 2 connected to one side of the mounting plate 1 to connect the mounting plate 1 with the robotic arm of an external device; a positioning plate 3 connected to the other side of the mounting plate 1 through a support rod 4; an extension plate 5 rotatably connected to the positioning plate 3 and connected to the mounting plate 1 through a moving mechanism; a scraper 6 provided at the end of the extension plate 5 away from the positioning plate 3, wherein the moving mechanism makes the scraper 6 fit the primary support surface at different angles by controlling the relative angle between the extension plate 5 and the positioning plate 3.

[0026] In this embodiment, the moving mechanism includes a hydraulic cylinder 8, and both ends of the hydraulic cylinder are rotatably connected to the mounting plate 1 and the extension plate 5 respectively.

[0027] In this embodiment, the extension plate 5 is provided with a first connecting ear plate 11, a first connecting hole is opened in the first connecting ear plate 11, and one end of the cylinder block of the hydraulic cylinder 8 is rotatably connected to the first connecting ear plate 11 through a first pin shaft 12 passing through the first connecting hole.

[0028] In this embodiment, the mounting plate 1 is provided with a second connecting ear plate 21, a second connecting hole is opened in the second connecting ear plate 21, and one end of the telescopic arm of the hydraulic cylinder 8 is rotatably connected to the second connecting ear plate 21 through a second pin shaft 22 passing through the second connecting hole.

[0029] In this embodiment, the positioning plate 3 is provided with a third connecting ear plate 31, a third connecting hole is opened in the third connecting ear plate 31, and one end of the extension plate 5 is rotatably connected to the positioning plate 3 through a third pin shaft 32 passing through the third connecting hole.

[0030] In this embodiment, the number of the extension plates 5 is three, and they are evenly distributed in the length direction of the positioning plate 3, and the scraper 6 is connected to the same side of the three extension plates 5.

[0031] In this embodiment, the end of the extension plate 5 connected to the scraper 6 is bent downward, and the end of the extension plate 5 connected to the positioning plate 1 is straight.

[0032] In this embodiment, a connecting rib 7 is installed between two adjacent extension plates 5.

[0033] In this embodiment, the hydraulic cylinder 8 is connected to a control system through an electric wire.

[0034] The characteristics and functions of the present utility model are further understood through the following description.

[0035] The scraper 6 in this embodiment can be adjusted in angle to adapt to primary support surfaces with different arcs, has a simple structure and convenient operation, and can effectively improve the flatness of the primary support shotcrete in the tunnel and the scraping efficiency.

[0036] To achieve the above beneficial effects, the scraping device of this embodiment mainly includes a mounting plate 1, a positioning plate 3, an extension plate 5, a scraping plate 6, and a hydraulic cylinder 8. The positioning plate 3 and the mounting plate 1 are fixedly connected by a support rod 4. The positioning plate 3 and the extension plate 5 are rotatably connected by a third connecting ear plate 31 and a third pin shaft 32. The scraping plate 6 is fixedly connected to the extension plate 5. The two ends of the hydraulic cylinder 8 are respectively rotatably connected to the extension plate 5 and the mounting plate 1 by a first connecting ear plate 11, a first pin shaft 12, a second connecting ear plate 21, and a second pin shaft 22.

[0037] The cylinder block or telescopic arm of the hydraulic cylinder 8 can be arbitrarily connected to the extension plate 5 and the mounting plate 1, and the direction is not limited.

[0038] Through the action of the hydraulic cylinder 8, that is, the extension or retraction of the telescopic arm, the angle change of the extension plate 5 relative to the positioning plate 3 is realized, and finally the angle change of the scraping plate 6 is driven. Mainly, the angle between the plane where the plate surface of the scraping plate 6 is located and the horizontal plane changes, so as to finally reach the preset angle to match the radian of the primary support surface.

[0039] The extension plate 5 connecting the scraping plate 6 is in a downwardly curved style to better cooperate with the downward movement and angle change of the scraping plate 6, and better realize the leveling of the primary support sprayed concrete in the tunnel.

[0040] The strength between two adjacent extension plates 5 is increased through a connecting rib 7, so that the strength of the extension plate 5 is increased, and further the stability of the scraping plate 6 is improved. In other embodiments, the number of extension plates 5 can be further increased to make the installation strength and working stability of the scraping plate 6 connected thereto better.

[0041] The hydraulic cylinder 8 can be electrically connected to an external power source and a control system through wires, and the action of the hydraulic cylinder 8 is controlled through the control system.

[0042] The connecting plate 2 is provided with a plurality of connecting holes to facilitate connection to the front end of the robotic arm of an external engineering construction machinery, such as an excavator. Moreover, the robotic arm itself can also adjust the angle. Therefore, the angle of the scraping plate 3 can be made more accurate and the angle range can be wider.

[0043] In summary, the scraping knife of the present utility model can realize angle change, adjust the angle between the scraping plate surface and the horizontal plane through the expansion and contraction of the hydraulic cylinder, so as to better fit the primary support surfaces of different angles. The scraping knife can be installed on the movable arm of the construction machinery. The scraping knife of the present utility model has a simple structure and convenient operation, and effectively improves the leveling work efficiency of the primary support surface in the tunnel.

[0044] The above are only the preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that any equivalent replacement and obvious changes made by using the description and illustrations of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A tunnel shotcrete scraper joint, characterized in that: include: Mounting plate; A connecting plate connected to one side of the mounting plate to connect the mounting plate to a mechanical arm of an external device; A positioning plate is connected to the other side of the mounting plate through a support rod. An extension plate, rotatably connected to the positioning plate and connected to the mounting plate via a movable mechanism; A scraper is arranged at the end of the extension plate away from the positioning plate, wherein The movable mechanism controls the relative angle between the extension plate and the positioning plate so as to make the scraper plate fit the initial support surface with different angles.

2. The tunnel shotcrete scraper joint according to claim 1, characterized in that: The movable mechanism comprises a hydraulic cylinder, and two ends of the hydraulic cylinder are rotatably connected to the mounting plate and the extension plate respectively.

3. The tunnel shotcrete scraper joint according to claim 2, characterized in that: The extension plate is provided with a first connecting ear plate, in which a first connecting hole is provided, and one end of the cylinder seat of the hydraulic oil cylinder is rotatably connected to the first connecting ear plate via a first pin shaft passing through the first connecting hole.

4. The tunnel shotcrete scraper joint according to claim 3, characterized in that: The mounting plate is provided with a second connecting ear plate, in which a second connecting hole is provided, and one end of the telescopic arm of the hydraulic oil cylinder is rotatably connected to the second connecting ear plate via a second pin shaft passing through the second connecting hole.

5. The tunnel shotcrete scraper joint according to claim 4, characterized in that: The positioning plate is provided with a third connecting ear plate, in which a third connecting hole is provided, and one end of the extension plate is rotatably connected to the positioning plate via a third pin shaft passing through the third connecting hole.

6. The tunnel shotcrete scraper joint according to claim 5, characterized in that: The number of the extension plates is three and they are evenly distributed in the length direction of the positioning plate, and the scraper is connected to the same side of the three extension plates.

7. The tunnel shotcrete scraper joint according to claim 6, characterized in that: One end of the extension plate connected to the scraper plate is bent downward, and one end of the extension plate connected to the positioning plate is in a straight plate shape.

8. The tunnel shotcrete scraper joint according to claim 7, characterized in that: A connecting rib is installed between two adjacent extension plates.

9. The tunnel shotcrete scraper joint according to claim 8, characterized in that: The hydraulic cylinder is connected to a control system via electrical wires.

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