Auxiliary device for guniting on inner wall of tunnel

Abstract

The utility model discloses an auxiliary device for guniting on the inner wall of a tunnel, which belongs to the technical field of tunnel construction and comprises a bearing, the inner diameter of the inner ring of the bearing is larger than that of a guniting pipe, mounting rods are symmetrically arranged on the inner ring of the bearing, and extension rods facing the inner wall of the tunnel are fixedly arranged at the upper ends of the mounting rods. Grouting pipe clamps are arranged between the two mounting rods and between the two extension rods; the pipe clamp comprises two semicircular plates connected through a bolt, a screw rod is fixedly arranged in the middle of the outer wall of each semicircular plate, mounting holes allowing the screw rods to extend out are formed in the extension rods and the mounting rods, and nuts are arranged at the extending ends of the extension rods and the mounting rods; horizontal rods are symmetrically arranged on the outer ring of the bearing, vertical rods are fixedly arranged at the outer ends of the horizontal rods, a driving cylinder is concentrically and fixedly arranged at the lower end of the inner ring, the driving cylinder is connected with a motor through a transmission structure, and the motor is fixed to the bottom plate. The fixing device can assist in fixing the manual guniting pipe.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel construction technology, and specifically relates to an auxiliary device for shotcreting the inner wall of a tunnel. Background Technology

[0002] Shotcrete is a common technique in tunnel construction. It involves spraying concrete slurry onto the tunnel face to fill cavities and unstable areas in the rock strata, providing reinforcement and waterproofing. The shotcrete material typically consists of cement, sand, and appropriate reinforcing agents, and is applied using specialized shotcrete equipment. However, due to the high walls of tunnels, a construction platform is usually needed, with workers manually holding the spray nozzles to apply the slurry. Since manual spraying from a construction platform is physically demanding, an auxiliary device for shotcreting the tunnel walls, mounted on the platform, is installed. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary device for shotcreting the inner wall of a tunnel.

[0004] This utility model is achieved through the following measures: an auxiliary device for grouting the inner wall of a tunnel, characterized in that it includes a bearing with an inner diameter larger than that of the grouting pipe, mounting rods are symmetrically arranged on the inner ring of the bearing, an extension rod facing the inner wall of the tunnel is fixedly arranged at the upper end of the mounting rod, and a plurality of grouting pipe clamps are arranged between the two mounting rods and between the two extension rods.

[0005] The pipe clamp includes two semi-circular ring plates connected by bolts. A screw is fixedly installed at the middle position of the outer wall of the two semi-circular ring plates. The extension rod and the mounting rod are both provided with mounting holes that allow the screw to extend out, and the extended end is provided with a nut.

[0006] The bearing has symmetrically arranged horizontal bars on its outer ring, with a vertical pole fixed to the outer end of each horizontal bar. A drive cylinder is concentrically and fixedly mounted on the lower end of the inner ring. The drive cylinder is connected to a motor with a reducer via a transmission structure. The motor is fixed to a base plate, which is fixed to the outer wall of the construction platform. The vertical pole is mounted on the base plate. The transmission structure is typically a transmission belt or a transmission chain.

[0007] Furthermore, an installation cylinder is fixedly installed on the base plate, and the upright is installed inside the installation cylinder and fixed with a nut.

[0008] The mounting cylinder is fixed to the outer wall of the construction platform by a connecting rod.

[0009] Furthermore, the inner wall of the semi-circular annular plate is provided with anti-slip pads.

[0010] Furthermore, springs are provided between the semi-circular annular plate and the mounting rod, and between the semi-circular annular plate and the extension rod, and the springs are sleeved on the screw.

[0011] Furthermore, an ear plate is fixedly provided on the inner ring, and the mounting rod is fixed to the ear plate by bolts.

[0012] Furthermore, the mounting rod and the extension rod are L-shaped. Diagonal braces are fixedly installed at the end of the extension rod and the lower end of the mounting rod.

[0013] Furthermore, the construction platform is generally driven by a drive vehicle, which can realize mobile shotcreting. The drive vehicle adopts existing technology and can be a crane. The specific structure will not be described in detail here.

[0014] How to use:

[0015] The grouting pipe, connected to the grouting equipment, passes under the drive cylinder, through all the pipe clamps on the mounting rod and the extension rod, and is finally tightened and secured with bolts. During shotcreting, the motor can be started, driving the drive cylinder and grouting pipe to rotate via the transmission mechanism, thus spraying grout onto the tunnel wall. Furthermore, the mounting rod is fixed with bolts, and the angle of the shotcreting pipe can be adjusted by loosening the bolts.

[0016] The beneficial effect of the technical solution provided by this utility model embodiment is that it can assist manual fixation of the grouting pipe to assist manual grouting of the tunnel inner wall. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings listed below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a partial structural schematic diagram of an embodiment of the present utility model;

[0019] Figure 2 Is with Figure 1 Schematic diagrams of structures at different angles;

[0020] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0021] Figure 4 This is a reference diagram showing the usage status;

[0022] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle.

[0023] The components represented by each number in the attached diagram are listed below: 1. Bearing; 2. Mounting rod; 3. Extension rod; 4. Pipe clamp; 5. Horizontal rod; 6. Vertical rod; 7. Drive cylinder; 8. Transmission structure; 9. Motor; 10. Diagonal brace; 11. Base plate; 12. Mounting cylinder; 13. Connecting rod; 14. Construction platform; 15. Drive vehicle; 101. Inner ring; 102. Outer ring; 10101. Ear plate; 401. Semi-circular ring plate; 402. Anti-slip pad; 403. Screw; 404. Nut; 405. Spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. Of course, the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit its scope.

[0025] See Figures 1-5 An auxiliary device for shotcreting the inner wall of a tunnel is characterized in that it includes a bearing 1 with an inner diameter of an inner ring 101 larger than that of a shotcreting pipe, mounting rods 2 are symmetrically arranged on the inner ring 101 of the bearing 1, an extension rod 3 facing the inner wall of the tunnel is fixedly arranged at the upper end of the mounting rod 2, and a plurality of grouting pipe clamps 4 are arranged between the two mounting rods 2 and between the two extension rods 3.

[0026] The pipe clamp 4 includes two semi-circular ring plates 401 connected by bolts. A screw 403 is fixedly installed at the middle position of the outer wall of the two semi-circular ring plates 401. Both the extension rod 3 and the mounting rod 2 are provided with mounting holes that allow the screw 403 to extend out, and the extended end is provided with a nut 404.

[0027] A horizontal bar 5 is symmetrically arranged on the outer ring 102 of bearing 1. A vertical bar 6 is fixedly installed at the outer end of the horizontal bar 5. A drive cylinder 7 is concentrically and fixedly installed at the lower end of the inner ring 101. The drive cylinder 7 is connected to a motor 9 with a reducer through a transmission structure 8. The motor 9 is fixed to the base plate 11, which is fixed to the outer wall of the construction platform 14. The vertical bar 6 is installed on the base plate 11. The transmission structure 8 is generally a transmission belt or a transmission chain.

[0028] An installation cylinder 12 is fixedly installed on the base plate 11, and the upright 6 is installed inside the installation cylinder 12 and fixed with nuts.

[0029] The mounting cylinder 12 is fixed to the outer wall of the construction platform 14 by the connecting rod 13.

[0030] The inner wall of the semi-circular annular plate 401 is provided with anti-slip pads 402.

[0031] A spring 405 is provided between the semi-circular annular plate 401 and the mounting rod 2, and between the semi-circular annular plate 401 and the extension rod 3. The spring 405 is sleeved on the screw 403.

[0032] An ear plate 10101 is fixedly installed on the inner ring 101, and the mounting rod 2 is fixed to the ear plate 10101 by bolts.

[0033] Mounting rod 2 and extension rod 3 are L-shaped. Diagonal braces 10 are fixedly installed at the end of extension rod 3 and the lower end of mounting rod 2.

[0034] The construction platform 14 is generally driven by a drive vehicle 15, which can realize mobile shotcreting. The drive vehicle 15 adopts existing technology and can be a crane. The specific structure will not be described in detail here.

[0035] How to use:

[0036] The grouting pipe, connected to the grouting equipment, passes under the drive cylinder 7, sequentially through all the pipe clamps 4 on the mounting rod 2 and all the pipe clamps 4 on the extension rod 3, and is finally tightened and secured with bolts. During shotcreting, the motor 9 can be started, driving the drive cylinder 7 and the grouting pipe to rotate via the transmission mechanism, thus spraying grout onto the tunnel wall. Furthermore, the mounting rod 2 is fixed with bolts; by loosening the bolts, the angle of the shotcreting pipe can be adjusted.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary device for tunnel inner wall shotcreting, characterized in that, The application relates to a bearing with an inner ring with an inner diameter larger than that of a grouting pipe, wherein mounting rods are symmetrically arranged on the inner ring of the bearing, and the upper ends of the mounting rods are fixedly provided with elongated rods facing the inner wall of a tunnel; a plurality of grouting pipe clamps are arranged between the two mounting rods and between the two elongated rods; The pipe clamp comprises two semicircular ring plates connected through bolts, screw rods are fixedly arranged at the middle positions of the outer walls of the two semicircular ring plates, mounting holes allowing the screw rods to extend out are arranged on the elongated rods and the mounting rods, and nuts are arranged at the extending ends of the mounting holes; Horizontal rods are symmetrically arranged on the outer ring of the bearing, vertical rods are fixedly arranged at the outer ends of the horizontal rods, a driving cylinder is concentrically and fixedly arranged at the lower end of the inner ring, the driving cylinder is connected with a motor with a speed reducer through a transmission structure, the motor is fixed on a bottom plate, the bottom plate is fixed on the outer wall of a construction platform, and the vertical rods are arranged on the bottom plate.

2. The auxiliary device for tunnel inner wall shotcreting according to claim 1, characterized in that, A mounting cylinder is fixedly arranged on the bottom plate, and the vertical rods are arranged in the mounting cylinder and fixed through nuts.

3. The auxiliary device for tunnel inner wall shotcreting according to claim 1, characterized in that, Anti-skid washers are arranged on the inner walls of the semicircular ring plates.

4. The auxiliary device for tunnel inner wall shotcreting according to claim 1, characterized in that, Springs are arranged between the semicircular ring plates and the mounting rods and between the semicircular ring plates and the elongated rods, and the springs are sleeved on the screw rods.

5. The auxiliary device for tunnel inner wall shotcreting according to any one of claims 1-4, characterized in that, Ear plates are fixedly arranged on the inner ring, and the mounting rods are fixed on the ear plates through bolts.

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