Construction device for initial support of karst cave tunnel

Abstract

The utility model discloses a construction device for a karst cave tunnel primary support, and relates to the technical field of tunnel construction. The inner bottom wall of the frame body is fixedly connected with a slurry storage box, a motor is arranged above the slurry storage box, the output shaft end of the motor is fixedly connected with a worm, the side wall of the worm is meshed with a worm gear, the middle of the side wall of the worm gear is fixedly connected with a rotating shaft in a penetrating mode, and the side wall of the rotating shaft and one side of the worm gear are fixedly sleeved with a first gear; the side wall of the first gear is meshed with a second gear, the side wall of the second gear is fixedly connected with a transverse shaft in a penetrating mode, the side wall of the transverse shaft is fixedly sleeved with a transverse column, the outer side wall of the transverse column is fixedly connected with a connecting plate, a cavity plate is arranged above the connecting plate, and a spray head is arranged on the face, back to the connecting plate, of the cavity plate. According to the concrete spraying device for the karst cave tunnel, concrete is sprayed to the inner wall of the karst cave tunnel through the spray head so as to form primary support, and the position of the spray head can be adjusted so as to spray concrete to different faces of the karst cave tunnel.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a construction device for the primary branch of a karst tunnel. Background Art

[0002] A karst cave refers to a natural cave formed when limestone is dissolved and corroded by flowing water containing carbon dioxide. When constructing a tunnel, it is sometimes necessary to pass through a karst cave. The karst cave has an extremely irregular shape and strongly developed karst, which affects the safety of the support structure. During construction, initial support operations must be carried out first. Spraying concrete on the inner wall of the tunnel is an indispensable step in the initial support operations. However, the existing concrete spraying operations in tunnels are mostly carried out by manual handheld nozzles, which is labor-intensive. In addition, when spraying on the top of the tunnel, there is a situation where concrete falls on the workers and their heads. The inventor proposes a construction device for initial support of a karst cave tunnel to solve the above problems. Utility Model Content

[0003] In order to solve the problem that the existing concrete spraying operation of tunnels is mostly carried out by manually holding a spray nozzle, which is labor-intensive; the purpose of the utility model is to provide a construction device for the primary support of a karst cave tunnel.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a construction device for the initial support of a karst tunnel, comprising a frame, an inner bottom wall of the frame fixedly connected to a slurry storage box, a motor is arranged above the slurry storage box, a worm is fixedly connected to the output shaft end of the motor, a worm wheel is meshed with the side wall of the worm, a rotating shaft is inserted and fixedly connected to the middle of the side wall of the worm wheel, a first gear is fixedly sleeved on the side wall of the rotating shaft and on one side of the worm wheel, a second gear is meshed with the side wall of the first gear, a transverse axis is inserted and fixedly connected to the side wall of the second gear, a transverse column is fixedly sleeved on the side wall of the transverse axis, a connecting plate is fixedly connected to the outer wall of the transverse column, a cavity plate is arranged above the connecting plate, and a nozzle is arranged on the side of the cavity plate facing away from the connecting plate.

[0005] Preferably, a fixed seat is provided on the side wall of the motor, and the end of the fixed seat facing away from the motor is fixed to the inner wall of the frame. Universal wheels are provided at the four corners of the bottom surface of the frame. The motor is installed through the fixed seat to push the frame. The device can be moved through the universal wheels to adjust the position of the device. The side wall of the rotating shaft is rotatably connected to a bearing seat, and the bottom surface of the bearing seat is fixedly connected to the side wall of the frame. The bearing seat is used to support the rotation of the rotating shaft to reduce the friction coefficient.

[0006] Preferably, the side wall of the horizontal axis is rotatably connected with a sleeve, and the sleeve is embedded and fixed in the frame. There are two second gears, and the horizontal column is located between the two second gears. The motor is started, and the worm rotates under the action of the motor output shaft. The worm and the worm wheel are meshed with each other, so that the rotating shaft can drive the first gear to rotate. The first gear and the second gear are meshed with each other, so that the horizontal column can drive the connecting plate to rotate, and then the cavity plate can drive the nozzle to rotate, so as to spray concrete on different surfaces of the cave tunnel.

[0007] Preferably, a convex rod is fixedly connected to a side of the cavity plate facing away from the nozzle, and an end of the convex rod facing away from the cavity plate is fixedly connected to the top surface of the connecting plate. The cavity plate is installed by the convex rod, and a connecting head is inserted and fixedly connected to the side wall of the cavity plate, and the output end of the connecting head is fixedly connected to the input end of the nozzle, and the input end of the connecting head is fixedly connected to a connecting pipe. A pump body is arranged inside the slurry storage box, and an end of the connecting pipe away from the connecting head is fixed to the output end of the pump body. The slurry storage box is used for storing concrete. When the pump body is started, the concrete can be transferred to the nozzle through the connecting pipe, and then sprayed onto the inner wall of the cave tunnel through the nozzle to form preliminary support.

[0008] Compared with the prior art, the beneficial effects of the utility model are: a nozzle and a slurry storage box are provided, and the pump body is started, and concrete can be transmitted to the nozzle through the connecting pipe, and then sprayed onto the inner wall of the cave tunnel through the nozzle to form preliminary support, and the cavity plate can be rotated by starting the motor, and then the position of the nozzle can be adjusted to spray concrete on different surfaces of the cave tunnel, effectively reducing the labor of workers in manually spraying concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0011] Figure 2 It is another structural schematic diagram of the utility model as a whole.

[0012] Figure 3 It is an enlarged view of point A of the present utility model.

[0013] In the figure: 1, frame; 2, universal wheel; 3, motor; 4, fixed seat; 5, worm; 6, worm wheel; 7, rotating shaft; 8, first gear; 9, second gear; 10, horizontal axis; 11, sleeve; 12, horizontal column; 13, connecting plate; 14, protruding rod; 15, cavity plate; 16, nozzle; 17, connecting head; 18, slurry storage box; 19, connecting pipe. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] Example: Figure 1-3 As shown, the utility model provides a construction device for the initial support of a karst tunnel, comprising a frame 1, an inner bottom wall of the frame 1 is fixedly connected to a slurry storage box 18, a motor 3 is arranged above the slurry storage box 18, a worm 5 is fixedly connected to the output shaft end of the motor 3, a worm wheel 6 is meshed with the side wall of the worm 5, a rotating shaft 7 is inserted and fixedly connected to the middle of the side wall of the worm wheel 6, a first gear 8 is fixedly sleeved on the side wall of the rotating shaft 7 and on one side of the worm wheel 6, a second gear 9 is meshed with the side wall of the first gear 8, a transverse axis 10 is inserted and fixedly connected to the side wall of the second gear 9, a transverse column 12 is fixedly sleeved on the side wall of the transverse axis 10, a connecting plate 13 is fixedly connected to the outer wall of the transverse column 12, a cavity plate 15 is arranged above the connecting plate 13, and a nozzle 16 is arranged on the side of the cavity plate 15 facing away from the connecting plate 13.

[0016] A fixing seat 4 is disposed on the side wall of the motor 3 , and one end of the fixing seat 4 facing away from the motor 3 is fixed to the inner wall of the frame 1 . Universal wheels 2 are disposed at the four corners of the bottom surface of the frame 1 .

[0017] By adopting the above technical solution, the motor 3 is installed through the fixing seat 4 to push the frame 1, and the device can be moved through the universal wheel 2 to adjust the position of the device.

[0018] The side wall of the rotating shaft 7 is rotatably connected with a bearing seat, and the bottom surface of the bearing seat is fixedly connected to the side wall of the frame body 1.

[0019] By adopting the above technical solution, the bearing seat is used to support the rotation of the rotating shaft 7 to reduce the friction coefficient.

[0020] The side wall of the horizontal shaft 10 is rotatably connected with a sleeve 11 , and the sleeve 11 is embedded and fixed in the frame 1 . There are two second gears 9 , and the horizontal column 12 is located between the two second gears 9 .

[0021] By adopting the above technical solution, the motor 3 is started, and the worm 5 rotates under the action of the output shaft of the motor 3. The mutual meshing of the worm 5 and the worm wheel 6 can make the rotating shaft 7 drive the first gear 8 to rotate. The mutual meshing of the first gear 8 and the second gear 9 can make the cross column 12 drive the connecting plate 13 to rotate, and then the cavity plate 15 can drive the nozzle 16 to rotate, so as to spray concrete on different surfaces of the cave tunnel.

[0022] A protruding rod 14 is fixedly connected to a surface of the cavity plate 15 facing away from the nozzle 16 , and an end of the protruding rod 14 facing away from the cavity plate 15 is fixedly connected to the top surface of the connecting plate 13 .

[0023] By adopting the above technical solution, the cavity plate 15 is installed through the protruding rod 14 .

[0024] A connector 17 is inserted and fixedly connected to the side wall of the cavity plate 15, the output end of the connector 17 is fixedly connected to the input end of the nozzle 16, the input end of the connector 17 is fixedly connected to a connecting pipe 19, a pump body is arranged inside the slurry storage box 18, and the end of the connecting pipe 19 away from the connector 17 is fixed to the output end of the pump body.

[0025] By adopting the above technical solution, the slurry storage box 18 is used to store concrete, and the pump body is started. The concrete can be transmitted to the nozzle 16 through the connecting pipe 19, and then sprayed onto the inner wall of the cave tunnel through the nozzle 16 to form preliminary support.

[0026] Working principle: When the utility model is in use, the frame 1 is pushed, and the device is moved to the desired position through the universal wheel 2. Then, the motor 3 is started, and the worm 5 rotates under the action of the output shaft of the motor 3. The worm 5 and the worm wheel 6 are meshed with each other, so that the rotating shaft 7 can drive the first gear 8 to rotate. The first gear 8 and the second gear 9 are meshed with each other, so that the cross column 12 can drive the connecting plate 13 to rotate, and then the cavity plate 15 can drive the nozzle 16 to rotate;

[0027] At the same time, the pump body is started, and the concrete can be transferred to the nozzle 16 through the connecting pipe 19, and then sprayed on the inner wall of the cave tunnel to form a preliminary support, and the nozzle 16 can change its direction following the cavity plate 15 to spray concrete on different surfaces of the cave tunnel.

[0028] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A construction device for primary support of a karst tunnel, comprising a frame (1), characterized in that: The inner bottom wall of the frame (1) is fixedly connected to a slurry storage box (18), a motor (3) is arranged above the slurry storage box (18), a worm (5) is fixedly connected to the output shaft end of the motor (3), a worm wheel (6) is meshed with the side wall of the worm (5), a rotating shaft (7) is inserted and fixedly connected to the middle of the side wall of the worm wheel (6), a first gear (8) is fixedly sleeved on the side wall of the rotating shaft (7) and on one side of the worm wheel (6), a second gear (9) is meshed with the side wall of the first gear (8), a transverse shaft (10) is inserted and fixedly connected to the side wall of the second gear (9), a transverse column (12) is fixedly sleeved on the side wall of the transverse shaft (10), a connecting plate (13) is fixedly connected to the outer wall of the transverse column (12), a cavity plate (15) is arranged above the connecting plate (13), and a nozzle (16) is arranged on the side of the cavity plate (15) facing away from the connecting plate (13).

2. A construction device for primary branching of a karst cave tunnel as claimed in claim 1, characterized in that: A fixing seat (4) is provided on the side wall of the motor (3), and one end of the fixing seat (4) facing away from the motor (3) is fixed to the inner wall of the frame (1).

3. A construction device for primary branching of a karst tunnel as claimed in claim 1, characterized in that: Universal wheels (2) are arranged at the four corners of the bottom surface of the frame (1).

4. A construction device for primary branching of a karst cave tunnel as claimed in claim 1, characterized in that: The side wall of the rotating shaft (7) is rotatably connected to a bearing seat, and the bottom surface of the bearing seat is fixedly connected to the side wall of the frame body (1).

5. A construction device for primary branching of a karst cave tunnel as claimed in claim 1, characterized in that: The side wall of the transverse shaft (10) is rotatably connected to a sleeve (11), and the sleeve (11) is embedded and fixed in the frame body (1).

6. A construction device for primary branching of a karst tunnel as claimed in claim 1, characterized in that: There are two second gears (9), and the crossbar (12) is located between the two second gears (9).

7. A construction device for primary branching of a karst cave tunnel as claimed in claim 1, characterized in that: A convex rod (14) is fixedly connected to a surface of the cavity plate (15) facing away from the nozzle (16), and an end of the convex rod (14) facing away from the cavity plate (15) is fixedly connected to the top surface of the connecting plate (13).

8. A construction device for primary branching of a karst cave tunnel as claimed in claim 1, characterized in that: A connector (17) is inserted and fixedly connected to the side wall of the cavity plate (15); the output end of the connector (17) is fixedly connected to the input end of the nozzle (16); the input end of the connector (17) is fixedly connected to a connecting pipe (19); a pump body is arranged inside the slurry storage box (18); an end of the connecting pipe (19) away from the connector (17) is fixed to the output end of the pump body.

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