Protective device for tunnel pulp shooting machine

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a protection device for a tunnel pulp shooting machine. The device comprises a plurality of arched air columns, shielding cloth fixedly connected to the arched air columns and a storage box used for storing the arched air columns and the shielding cloth, supporting air columns used for opening the shielding cloth are arranged between the arched air columns and communicated with the arched air columns, air valves are fixedly connected to the arched air columns, and the supporting air columns are communicated with the arched air columns. And an inflator for inflating is arranged on the air valve. The concrete spraying machine can be comprehensively protected, and concrete grout is prevented from being splashed to the concrete spraying machine; the device is convenient to store, and after the shielding cloth is rolled, the space ratio of the shielding cloth is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a protective device for a tunnel shotcrete machine. Background Art

[0002] When performing grouting operations in tunnels, slurry will splash, and concrete slurry will burst onto the motion mechanism and the motion cylinder of the grouting machine, which can easily cause problems such as stagnation in the moving parts of the grouting machine, and have a certain impact on the performance of the equipment. The existing technology usually adopts the use of protective brackets to prevent slurry from splashing, but the protective brackets will take up a lot of space, and the installation position is not flexible. At the same time, it will also affect the working range of the equipment and limit the use function of the equipment.

[0003] Chinese patent CN202320565571.4 discloses "A tunnel shotcrete protection mechanism", publication number CN219733404U, the device includes a bracket, a shielding film, several scissor-type telescopic mechanisms and multiple support rods; the bracket is arc-shaped; the scissor-type telescopic mechanism is installed on the bracket and is located on the same side of the bracket; the telescopic direction of the scissor-type telescopic mechanism is perpendicular to the plane where the bracket is located; the support rod is arc-shaped and arranged parallel to the bracket; multiple support rods are dispersedly arranged on the scissor-type telescopic mechanism along the telescopic direction of the scissor-type telescopic mechanism; the shielding film is laid on multiple support rods. However, the device has some defects: the device cannot move, the device cannot follow the shotcrete machine, and the device can only provide partial protection for the main parts of the shotcrete machine, and cannot provide comprehensive protection for the shotcrete machine. Utility Model Content

[0004] In order to solve the above problems of the prior art, the utility model provides a protective device for a tunnel shotcrete machine, which can comprehensively protect the shotcrete machine and prevent concrete slurry from splashing onto the shotcrete machine.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective device for a tunnel spraying machine, comprising a plurality of arched air columns, a shielding cloth fixedly connected to the arched air columns, and a storage box for storing the arched air columns and the shielding cloth, a supporting air column for propping up the shielding cloth is arranged between the arched air columns, the supporting air column is connected to the arched air column, an air valve is fixedly connected to the arched air column, and an air pump for inflation is arranged on the air valve.

[0006] With the above structural design, the shielding cloth is stretched out after the arched air column and the supporting air column are filled with air, and the spraying machine is shielded when the spraying machine sprays cement slurry, providing comprehensive protection for the spraying machine to prevent concrete slurry from splashing onto the spraying machine.

[0007] Preferably, the storage box includes an upper storage box fixedly connected to the front end of the shielding cloth, a lower storage box arranged at the rear end of the shielding cloth, and a winding shaft fixedly connected to the rear end of the shielding cloth, the winding shaft is rotatably connected to the box wall of the lower storage box, and a hand wheel is fixedly connected to the winding shaft.

[0008] The structural design makes it easy to store the shielding cloth and to place the shielding cloth after it is erected.

[0009] Preferably, a squeezing roller is rotatably connected to the box wall of the lower storage box, a plurality of squeezing rollers are provided, and the shielding cloth passes through the gaps between the squeezing rollers.

[0010] By adopting the above structural design, the arched air column and the supporting air column are squeezed to accelerate the discharge of the air in the arched air column and the supporting air column, making it easier to roll up and store the shielding cloth.

[0011] Preferably, movable wheels are fixedly connected to outer box walls of the upper storage box and the lower storage box.

[0012] The above structural design makes it easy to move the device and enables it to move along with the shotcrete machine.

[0013] Preferably, a locking plate with an L-shaped cross-section is fixedly connected to the outer box wall of the upper storage box, a fixed end of the elastic rope is fixedly connected to the outer box wall of the upper storage box, and a free end of the elastic rope is fixedly connected to a locking ring.

[0014] With the above structural design, the upper storage box and the lower storage box are fixed together, so that the items placed inside are protected when not in use.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1) This device can provide comprehensive protection for the shotcrete machine to prevent concrete slurry from splashing onto the shotcrete machine.

[0017] 2) The device is easy to store and after the shielding cloth is rolled up, the space occupied by the device is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the storage box of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the shielding cloth of the utility model; DETAILED DESCRIPTION

[0021] See also Figure 1 , Figure 2 , Figure 3The utility model provides a technical solution: a protective device for a tunnel shotcrete machine, comprising a plurality of arched air columns 1, a shielding cloth 2 fixedly connected to the arched air columns 1, and a storage box 3 for storing the arched air columns 1 and the shielding cloth 2, a supporting air column 4 for propping up the shielding cloth 2 is arranged between the arched air columns 1, the supporting air column 4 is connected to the arched air column 1, an air valve 11 is fixedly connected to the arched air column 1, an air pump 5 for inflation is arranged on the air valve 11, and the air pump 5 is placed in the storage box 3 when not in use.

[0022] The storage box includes an upper storage box 31 fixedly connected to the front end of the shielding cloth 2, a lower storage box 32 arranged at the rear end of the shielding cloth 2, and a winding shaft 33 fixedly connected to the rear end of the shielding cloth 2. The winding shaft 33 is rotatably connected to the box wall of the lower storage box 32, and a hand wheel 34 is fixedly connected to the winding shaft 33.

[0023] The box wall of the lower storage box 32 is rotatably connected to a squeezing roller 9 , wherein a plurality of squeezing rollers 9 are provided, and the shielding cloth 2 passes through the gaps between the squeezing rollers 9 .

[0024] Two squeezing rollers 9 are provided, and the rear end of the shielding cloth 2 is inserted into the gap between the squeezing rollers 9 .

[0025] The outer box walls of the upper storage box 31 and the lower storage box 32 are both fixedly connected to the moving wheels 6 .

[0026] The outer wall of the upper storage box 31 is fixedly connected to a locking plate 71 with an L-shaped cross section, the outer wall of the upper storage box 31 is fixedly connected to a fixed end of an elastic cord 72, and the free end of the elastic cord 72 is fixedly connected to a locking ring 73. The upper surface of the upper storage box 31 is fixedly connected to a square-shaped protruding frame, and the lower storage box 32 is provided with a groove matching the protruding frame.

[0027] In this embodiment, the shielding cloth 2 is made of a transparent plastic film, which reduces the obstruction of the workers' vision when they operate the spraying machine.

[0028] When the device is in use, the staff first opens the storage box 3, separates the upper storage box 31 and the lower storage box 32, and then connects the air pump 5 to the air valve 11. The staff uses the air pump 5 to inflate the arched air column 1 and the supporting air column 4. After the arched air column 1 and the supporting air column 4 are filled with air, the shielding cloth 2 is opened. Then the staff operates the spraying machine to enter the tunnel and enter the protection range of the device to spray the inner wall of the tunnel. As the spraying machine moves forward, the staff pushes the device forward.

[0029] When the spraying operation is completed, the staff flushes and cleans the shielding cloth, dries it, and then turns the hand wheel 34 to drive the reel 33 to reel in the shielding cloth 2. When the shielding cloth 2 is reeled in, the arched air column 1 and the supporting air column 4 pass through the squeezing roller 9 to discharge the air in the arched air column 1 and the supporting air column 4 from the air valve 11 until the shielding cloth 2 is completely reeled in. Then the staff puts the upper storage box 31 and the lower storage box 32 together, then the staff wraps the elastic rope 72 around the storage box 3, buckles the locking ring 73 on the locking plate 71, fixes the storage box, and then stores the device for next use.

[0030] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0031] The present invention is described above with reference to the preferred embodiments, but the protection scope of the present invention is not limited thereto, and all technical solutions falling within the scope of the claims are within the protection scope of the present invention. Various improvements may be made to the present invention and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A protective device for a tunnel shotcrete machine, characterized in that: The invention comprises a plurality of arched air columns (1), a shielding cloth (2) fixedly connected to the arched air columns (1), and a storage box (3) for storing the arched air columns (1) and the shielding cloth (2); a supporting air column (4) for propping up the shielding cloth (2) is arranged between the arched air columns (1); the supporting air column (4) is connected to the arched air column (1); an air valve (11) is fixedly connected to the arched air column (1); and an air pump (5) for inflation is arranged on the air valve (11).

2. A protective device for a tunnel shotcrete machine according to claim 1, characterized in that: The storage box comprises an upper storage box (31) fixedly connected to the front end of the shielding cloth (2), a lower storage box (32) arranged at the rear end of the shielding cloth, and a reel (33) fixedly connected to the rear end of the shielding cloth (2); the reel (33) is rotatably connected to the box wall of the lower storage box (32); and a hand wheel (34) is fixedly connected to the reel (33).

3. A protective device for a tunnel shotcrete machine according to claim 2, characterized in that: The box wall of the lower storage box (32) is rotatably connected to a squeezing roller (9), a plurality of squeezing rollers (9) are provided, and the shielding cloth (2) passes through the gaps between the squeezing rollers (9).

4. A protective device for a tunnel shotcrete machine according to claim 2, characterized in that: The outer box walls of the upper storage box (31) and the lower storage box (32) are both fixedly connected to moving wheels (6).

5. A protective device for a tunnel shotcrete machine according to claim 2, characterized in that: A locking plate (71) with an L-shaped cross section is fixedly connected to the outer box wall of the upper storage box (31), a fixed end of an elastic rope (72) is fixedly connected to the outer box wall of the upper storage box (31), and a free end of the elastic rope (72) is fixedly connected to a locking ring (73).

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