Concrete spraying equipment for tunnel primary support

Abstract

The utility model belongs to the technical field of tunnel construction, and particularly relates to concrete spraying equipment for tunnel primary support, which comprises a construction vehicle with a concrete spraying function and a multi-stage support rod, the hinged end of the multi-stage support rod is mounted on the surface of the construction vehicle, and the multi-stage support rod comprises a first-stage support rod and a second-stage support rod. One end of the first-stage supporting rod is hinged to the second-stage supporting rod, and a protection mechanism is installed on the surface of the multi-stage supporting rod and comprises a cover plate and a stretching plate. According to the concrete spraying equipment for tunnel primary supporting, the protection mechanism is installed on the surface of the multi-stage supporting rod, and the protection mechanism is used for being attached to the concrete spraying head for installation, so that when the equipment is not used, the multi-stage supporting rod is reset, the first-stage supporting rod and the second-stage supporting rod are folded, and the inclination sensor and the proximity switch are triggered at the same time; and the electric push rod drives the extension plate to extend at the lower end of the cover plate, and the surface of the concrete spray head is wrapped and protected, so that the protection mechanism has the characteristic of conveniently protecting the concrete spray head.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to concrete spraying equipment for initial tunnel support. Background Art

[0002] A tunnel single side wall limited space intelligent concrete spraying manipulator (publication number: CN115163128A) disclosed on the Chinese patent website solves the technical problems that the traditional concrete spraying construction device has a large labor force due to the large shoulder-carrying spraying head in the limited space, and when the nozzle is swung from bottom to top, the nozzle and the spraying surface are prone to a large tilt angle, which makes the concrete spraying uneven, and when the nozzle is driven to swing left and right slowly to make a horizontal circular movement, the moving speed cannot be kept uniform, which makes the concrete spraying thickness uneven, resulting in low construction quality, but the following problems still exist:

[0003] When in use, the concrete nozzle needs to be deflected by a multi-stage support rod, and then concrete is sprayed in the tunnel. When use is over, the multi-stage support rod is reset, and the concrete nozzle is exposed. When placed in the tunnel, impurities such as gravel are prone to fall off and hit the surface of the concrete nozzle, which is not only easy to damage the concrete nozzle, but also easy to cause the concrete nozzle to deflect due to impact, thereby affecting the accuracy of subsequent concrete spraying, making it inconvenient to use. Utility Model Content

[0004] Based on the technical problem that the existing concrete spraying equipment is inconvenient to protect the spraying head, the utility model proposes a concrete spraying equipment for initial tunnel support.

[0005] The utility model proposes a concrete spraying device for initial tunnel support, comprising a construction vehicle with a concrete spraying function and a multi-stage support rod, wherein the hinged end of the multi-stage support rod is installed on the surface of the construction vehicle, the multi-stage support rod comprises a primary support rod and a secondary support rod, one end of the primary support rod is hinged to the secondary support rod, and a protective mechanism is installed on the surface of the multi-stage support rod, and the protective mechanism comprises a cover plate and an extension plate.

[0006] Preferably, the end faces of the cover plate and the extension plate are both U-shaped, the outer surface of the extension plate is slidably connected to the inner wall of the cover plate, the two inner side wall surfaces at the lower end of the cover plate are fixedly connected to mounting plates, and the side wall surfaces of the two mounting plates are respectively fixedly connected to the two side surfaces of the secondary support rod.

[0007] Through the above technical solution, the extension plate is extended outward from the inner side of the cover plate, thereby facilitating increasing the protection range of the extension plate and the cover plate.

[0008] Preferably, an electric push rod is fixedly connected to the inner side of the cover plate, a push plate is fixedly connected to the movable end surface of the electric push rod, and a side wall surface of the push plate is fixedly connected to the inner side wall of the lower end of the extension plate.

[0009] Through the above technical solution, the electric push rod is used to provide power for ejecting the extension plate, thereby facilitating the control of the extension and retraction of the extension plate.

[0010] Preferably, a cleaning block is fixedly connected to the inner wall surface of the lower end of the cover plate, the cleaning block is made of cleaning cotton, and a trigger block is fixedly connected to the inner wall surface of the lower end of the cover plate, and the trigger block is located above the cleaning block.

[0011] Through the above technical solution, the trigger block is located above the cleaning block, so that the cleaning cotton can contact the side wall surface of the primary support rod before the trigger block.

[0012] Preferably, a tilt sensor and a proximity switch are installed on the side wall surface of the primary support rod, and the tilt sensor, the proximity switch and the electric push rod are all electrically connected to the control unit of the construction vehicle.

[0013] Through the above technical solution, when the primary support rod and the secondary support rod are folded and reset, the cleaning cotton rubs against the surface of the tilt sensor and the proximity switch, thereby cleaning and maintaining the surface of the tilt sensor and the proximity switch.

[0014] Preferably, a concrete spray head is installed on the end surface of the secondary support rod.

[0015] Through the above technical solution, the cover plate and the extension plate are installed close to the concrete sprinkler head, so that the extension plate and the cover plate can protect the concrete sprinkler head.

[0016] The beneficial effects of the present invention are:

[0017] By installing a protective mechanism on the surface of a multi-stage support rod and using the protective mechanism to install it close to the concrete sprinkler, when not in use, the multi-stage support rod is reset, the first-stage support rod and the second-stage support rod are folded and the tilt sensor and the proximity switch are triggered at the same time, so that the electric push rod drives the extension plate to extend at the lower end of the cover plate and wraps the surface of the concrete sprinkler for protection, so that the protective mechanism has the characteristic of being easy to protect the concrete sprinkler. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a concrete spraying device for initial tunnel support proposed by the utility model;

[0019] Figure 2 A three-dimensional diagram of a multi-stage support rod structure of a concrete spraying device for initial tunnel support proposed by the utility model;

[0020] Figure 3 The utility model discloses a cross-sectional view of a cover plate structure of a concrete spraying device for initial tunnel support.

[0021] In the figure: 1. Construction vehicle; 2. Multi-stage support pole; 21. Primary support pole; 22. Secondary support pole; 3. Cover plate; 31. Extension plate; 32. Mounting plate; 33. Electric push rod; 34. Push plate; 35. Cleaning block; 36. Trigger block; 4. Tilt sensor; 5. Proximity switch; 6. Concrete sprinkler. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 3 A concrete spraying device for initial tunnel support includes a construction vehicle 1 with a concrete spraying function and a multi-stage support rod 2. The hinged end of the multi-stage support rod 2 is installed on the surface of the construction vehicle 1. The multi-stage support rod 2 includes a primary support rod 21 and a secondary support rod 22. One end of the primary support rod 21 is hinged to the secondary support rod 22. A protective mechanism is installed on the surface of the multi-stage support rod 2. The protective mechanism includes a cover plate 3 and an extension plate 31.

[0024] In order to protect the concrete sprinkler 6, the end faces of the cover plate 3 and the extension plate 31 are both U-shaped, the outer surface of the extension plate 31 is slidably connected to the inner wall of the cover plate 3, and the two inner side wall surfaces of the lower end of the cover plate 3 are fixedly connected with the mounting plates 32, and the side wall surfaces of the two mounting plates 32 are respectively fixedly connected to the two side surfaces of the secondary support rod 22, and the extension plate 31 is extended outward from the inner side of the cover plate 3, so as to increase the protection range of the extension plate 31 and the cover plate 3, and an electric push rod 33 is fixedly connected to the inner side of the cover plate 3, and the movable end surface of the electric push rod 33 is fixedly connected to the push plate 34, and the side wall surface of the push plate 34 is fixedly connected to the inner side wall of the lower end of the extension plate 31, and the electric push rod 33 is used to provide power for the ejection of the extension plate 31, so as to facilitate the control of the extension and retraction of the extension plate 31.

[0025] In order to trigger the electric push rod 33, a cleaning block 35 is fixedly connected to the inner wall surface of the lower end of the cover plate 3. The cleaning block 35 is made of cleaning cotton. A trigger block 36 is fixedly connected to the inner wall surface of the lower end of the cover plate 3. The trigger block 36 is located above the cleaning block 35. The trigger block 36 is located above the cleaning block 35, so that the cleaning cotton contacts the side wall surface of the first-level support rod 21 before the trigger block 36. The side wall surface of the first-level support rod 21 is installed with a tilt sensor 4 and a proximity switch 5. The tilt sensor 4, the proximity switch 5 and the electric push rod 33 are all electrically connected to the control unit of the construction vehicle 1. When the first-level support rod 21 and the second-level support rod 22 are folded and reset, the cleaning cotton rubs against the surface of the tilt sensor 4 and the proximity switch 5, thereby cleaning and maintaining the surface of the tilt sensor 4 and the proximity switch 5.

[0026] By installing a protective mechanism on the surface of the multi-stage support rod 2 and using the protective mechanism to install it close to the concrete sprinkler 6, when not in use, the multi-stage support rod 2 is reset, the first-stage support rod 21 and the second-stage support rod 22 are folded and the tilt sensor 4 and the proximity switch 5 are triggered at the same time, so that the electric push rod 33 drives the extension plate 31 to extend at the lower end of the cover plate 3 and wraps the surface of the concrete sprinkler 6 for protection, so that the protective mechanism has the characteristic of being easy to protect the concrete sprinkler 6.

[0027] A concrete sprinkler 6 is installed on the end surface of the secondary support rod 22 , and the cover plate 3 and the extension plate 31 are installed close to the concrete sprinkler 6 , so that the extension plate 31 and the cover plate 3 can protect the concrete sprinkler 6 .

[0028] Working principle:

[0029] When in use, the electric push rod 33 is retracted and reset, and the movable end of the electric push rod 33 pulls the extension plate 31 to retract toward the inner side of the cover plate 3 through the push plate 34 to avoid hindering the deflection of the concrete spray head 6;

[0030] After use, the multi-stage support rod 2 is reset, the first-stage support rod 21 and the second-stage support rod 22 are folded and the tilt sensor 4 and the proximity switch 5 are triggered at the same time, and the electric push rod 33 drives the extension plate 31 to extend at the lower end of the cover plate 3, and the extension plate 31 wraps and protects the surface of the concrete sprinkler 6.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A concrete spraying device for initial tunnel support, comprising a construction vehicle (1) with a concrete spraying function and a multi-stage support rod (2), wherein the hinged end of the multi-stage support rod (2) is mounted on the surface of the construction vehicle (1), characterized in that: The multi-stage support rod (2) comprises a primary support rod (21) and a secondary support rod (22), one end of the primary support rod (21) is hinged to the secondary support rod (22), and a protective mechanism is installed on the surface of the multi-stage support rod (2), and the protective mechanism comprises a cover plate (3) and an extension plate (31).

2. The concrete spraying equipment for initial tunnel support according to claim 1 is characterized in that: The end surface of the cover plate (3) and the end surface of the extension plate (31) are both U-shaped, the outer surface of the extension plate (31) is slidably connected to the inner wall of the cover plate (3), the two inner side wall surfaces at the lower end of the cover plate (3) are fixedly connected to the mounting plates (32), and the side wall surfaces of the two mounting plates (32) are respectively fixedly connected to the two side surfaces of the secondary support rod (22).

3. The concrete spraying equipment for initial tunnel support according to claim 2 is characterized in that: An electric push rod (33) is fixedly connected to the inner side of the cover plate (3), a push plate (34) is fixedly connected to the movable end surface of the electric push rod (33), and a side wall surface of the push plate (34) is fixedly connected to the inner side wall of the lower end of the extension plate (31).

4. The concrete spraying equipment for initial tunnel support according to claim 3 is characterized in that: A cleaning block (35) is fixedly connected to the inner wall surface of the lower end of the cover plate (3), and the material of the cleaning block (35) is cleaning cotton. A trigger block (36) is fixedly connected to the inner wall surface of the lower end of the cover plate (3), and the trigger block (36) is located above the cleaning block (35).

5. The concrete spraying equipment for initial tunnel support according to claim 4 is characterized in that: A tilt sensor (4) and a proximity switch (5) are installed on the side wall surface of the primary support rod (21); the tilt sensor (4), the proximity switch (5) and the electric push rod (33) are all electrically connected to the control unit of the construction vehicle (1).

6. The concrete spraying equipment for initial tunnel support according to claim 1, characterized in that: A concrete spray head (6) is installed on the end surface of the secondary support rod (22).

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