Self-adaptive curve turning device of tunnel shield belt conveyor

Abstract

The utility model discloses a tunnel shield belt conveyor self-adaptive curve turning device which comprises a bracket and a third hinge seat, the bracket rotates on the third hinge seat through a pin shaft, a side plate of the bracket is further provided with a telescopic assembly, and the telescopic assembly is used for driving the bracket to rotate on the third hinge seat; the telescopic assembly comprises an oil cylinder, and one end of the oil cylinder is connected with the bracket. The travel switch is used for monitoring the deviation condition of the conveying belt, the hydraulic oil cylinder is used as an executing mechanism, automatic adjustment of the tunnel shield belt conveyor at the curve turning section is achieved, operation can be conducted in the non-stop state, manpower is replaced, and the production efficiency is improved. Through data feedback of a travel switch and an electronic ruler, adjustment is conducted in real time, and the belt conveyor is made to adapt to tunneling path changes in a self-adaptive mode.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyors, in particular to an adaptive curve turning device for a tunnel shield belt conveyor. Background Art

[0002] When the shield machine is excavating the tunnel, it needs to be equipped with a belt conveyor to transport the slag cut by the shield machine out of the tunnel. In the curved section of the tunnel, the centripetal tension on the conveyor belt of the belt conveyor will cause the conveyor belt to deviate toward the center of the curve, causing the slag on the conveyor belt to be scattered, which has an adverse effect on the construction and increases the maintenance cost. The theoretical method to achieve the curve turning of the belt conveyor is to raise the conveyor belt near the center of the curve at the curve turning point, and rely on the gravity of the conveyor belt and the slag to offset the centripetal tension, thereby solving the problem of the conveyor belt deviating toward the center of the circle. At present, the existing technology has a patent number of "a belt conveyor slag conveying device suitable for a small curve earth pressure balance shield machine": CN201720275252.4. This technology mainly uses an "inclination spiral adjustment device" to adjust the inclination of the belt conveyor, so that one side of the conveyor belt is raised, the conveyor belt deviation is controlled, and the small belt conveyor curve turning is achieved. The spiral adjustment device used in this technology is manually operated and can only be operated when the machine is stopped. It cannot achieve online automatic operation and has low efficiency. There is no feedback facility for adjustment effects, and the accuracy cannot be controlled manually. The path changes frequently during tunnel excavation, and the process of repeated adjustments is cumbersome. Utility Model Content

[0003] The purpose of the utility model is to solve the problems of the above-mentioned background technology and to provide an adaptive curve turning device for a tunnel shield belt conveyor.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A tunnel shield belt conveyor adaptive curve turning device, comprising a bracket and a third hinge seat, wherein the bracket rotates on the third hinge seat through a pin shaft, and the bracket side plate is further provided with a telescopic assembly, and the telescopic assembly is used to drive the bracket to rotate on the third hinge seat;

[0006] The telescopic assembly comprises an oil cylinder, one end of which is connected to the bracket.

[0007] As a further solution of the utility model: an electronic ruler for reading is arranged on the telescopic assembly.

[0008] As a further solution of the utility model: a belt conveyor frame is fixedly installed on the top of the bracket, a lower roller group is arranged below the belt conveyor frame, and a groove-shaped upper roller group is arranged above the lower roller group in the belt conveyor frame.

[0009] As a further solution of the utility model: at least two travel switches are arranged on both sides of the belt conveyor frame at the upper roller group.

[0010] As a further solution of the utility model: the telescopic assembly also includes two articulated seats, one end of the oil cylinder is rotatably connected to the bracket through one of the articulated seats, and the other articulated seat is installed at the other end of the oil cylinder.

[0011] As a further solution of the utility model: a trolley top steel frame is arranged below the bracket, the third hinged seat is connected to the trolley top steel frame, and the other hinged seat is also connected to the trolley top steel frame.

[0012] Beneficial effects of the utility model: The present invention uses a travel switch to monitor the deviation of the conveyor belt, and uses a hydraulic cylinder as an actuator to achieve automatic adjustment of the tunnel shield belt conveyor in the curved turning section. It can be operated without stopping the machine, replacing manpower and improving production efficiency. Through the data feedback of the travel switch and the electronic ruler, real-time adjustment is carried out to make the belt conveyor adaptive to the changes in the tunnel excavation path. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the assembly structure of the utility model;

[0016] Figure 3 It is a partial structural schematic diagram of the utility model;

[0017] Figure 4 It is a schematic diagram of lifting the right side of the belt conveyor to make the belt conveyor adapt to the right turn of the curved tunnel;

[0018] Figure 5 It is a schematic diagram of lifting the left side of the belt conveyor to make the belt conveyor adapt to the left turn of the curved tunnel.

[0019] In the figure: 1. first stroke switch; 2. upper roller group; 3. lower roller group; 4. second stroke switch; 5. belt conveyor frame; 6. first articulated seat; 7. oil cylinder; 8. second articulated seat; 9. third articulated seat; 10. bracket; 11. top steel frame of trolley; 12. pin shaft; 13. electronic ruler. DETAILED DESCRIPTION

[0020] 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 of 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.

[0021] For example, see Figure 1-5 As shown, the utility model is a tunnel shield belt conveyor adaptive curve turning device, comprising a bracket 10 and a third articulated seat 9, the bracket 10 rotates on the third articulated seat 9 through a pin 12, and the side plate of the bracket 10 is also provided with a telescopic component, and the telescopic component is used to drive the bracket 10 to rotate on the third articulated seat 9;

[0022] The telescopic assembly includes a cylinder 7 , one end of which is connected to the bracket 10 .

[0023] For example 2, please refer to Figure 1-5 As shown, the utility model is a tunnel shield belt conveyor adaptive curve turning device, comprising a bracket 10 and a third articulated seat 9, the bracket 10 rotates on the third articulated seat 9 through a pin 12, and the side plate of the bracket 10 is also provided with a telescopic component, and the telescopic component is used to drive the bracket 10 to rotate on the third articulated seat 9;

[0024] The telescopic assembly includes a cylinder 7 , one end of which is connected to the bracket 10 .

[0025] A conveyor belt frame 5 is fixedly mounted on the top of the bracket 10, a lower roller group 3 is arranged below the conveyor belt frame 5, a grooved upper roller group 2 is arranged above the lower roller group 3 in the conveyor belt frame 5, and at least two travel switches are arranged on both sides of the conveyor belt frame 5 at the upper roller group 2. The two travel switches are respectively a first travel switch 1 and a second travel switch 4. The two travel switches are rigidly connected to the left and right sides of the conveyor belt frame 5 with bolts to monitor the deviation of the conveyor belt.

[0026] For example 2, please refer to Figure 1-5 As shown, the utility model is a tunnel shield belt conveyor adaptive curve turning device, comprising a bracket 10 and a third articulated seat 9, the bracket 10 rotates on the third articulated seat 9 through a pin 12, and the side plate of the bracket 10 is also provided with a telescopic component, and the telescopic component is used to drive the bracket 10 to rotate on the third articulated seat 9;

[0027] The telescopic assembly includes a cylinder 7 , one end of which is connected to the bracket 10 .

[0028] A conveyor belt frame 5 is fixedly mounted on the top of the bracket 10, a lower roller group 3 is arranged below the conveyor belt frame 5, a grooved upper roller group 2 is arranged above the lower roller group 3 in the conveyor belt frame 5, and at least two travel switches are arranged on both sides of the conveyor belt frame 5 at the upper roller group 2. The two travel switches are respectively a first travel switch 1 and a second travel switch 4. The two travel switches are rigidly connected to the left and right sides of the conveyor belt frame 5 with bolts to monitor the deviation of the conveyor belt.

[0029] The telescopic assembly also includes two articulated seats, one end of the oil cylinder 7 is rotatably connected to the bracket 10 through one of the articulated seats, and the other articulated seat is installed at the other end of the oil cylinder 7.

[0030] A trolley top steel frame 11 is provided below the bracket 10 , the third hinge seat 9 is connected to the trolley top steel frame 11 , and the other hinge seat is also connected to the trolley top steel frame 11 .

[0031] The telescopic assembly is provided with an electronic ruler 13 for reading.

[0032] It is also worth mentioning that:

[0033] The upper roller group 2 and the lower roller group 3 are rigidly connected to the inside of the belt conveyor frame 5 by bolts to support the conveyor belt.

[0034] The belt conveyor frame 5 is welded to the upper part of the bracket 10 .

[0035] One end of the first hinge seat 6 is fixedly welded to the right side of the bracket 10, and the other end is hinged to the ear hole of the piston rod of the oil cylinder 7.

[0036] One end of the second hinged seat 8 is fixedly welded to the top steel frame 11 of the trolley, and the other end is hinged to the ear hole of the cylinder body of the oil cylinder 7.

[0037] One end of the third hinge seat 9 is fixedly welded to the top steel frame 11 of the trolley, and the other end is hinged to the bracket 10 by a pin shaft 12 .

[0038] The housing of the electronic ruler 13 is fixedly mounted on the cylinder housing of the oil cylinder 7 , and the pull rod of the electronic ruler 13 is fixedly mounted on the piston rod of the oil cylinder 7 .

[0039] The working principle of the present invention is as follows: when the belt conveyor is located at a curved turning point in a tunnel, the conveyor belt will deviate toward the center of the curve, and the edge of the conveyor belt after the deviation will contact the first travel switch 1 or the second travel switch 4. The first travel switch 1 or the second travel switch 4 sends an adjustment signal to the belt conveyor control system, and controls the piston rod of the oil cylinder 7 to push out or pull back. The pushing out or pulling back action of the piston rod of the oil cylinder 7 causes the bracket 10 to rotate around the pin 12 through the first articulated seat 6, thereby realizing the rotation of the upper roller group 2, the lower roller group 3, and the belt conveyor frame 5, so that the left or right side of the belt conveyor is raised to adapt to the curved turning point of the tunnel.

[0040] The electronic ruler 13 is used to measure the stroke of the piston rod of the oil cylinder 7 and to feed back the data to control the left or right lifting angle of the belt conveyor.

[0041] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the claims of the utility model.

Claims

1. A tunnel shield belt conveyor adaptive curve turning device, characterized in that: It comprises a bracket (10) and a third hinge seat (9), wherein the bracket (10) rotates on the third hinge seat (9) via a pin shaft (12), and a telescopic component is further provided on a side plate of the bracket (10), and the telescopic component is used to drive the bracket (10) to rotate on the third hinge seat (9); The telescopic assembly comprises an oil cylinder (7), one end of which is connected to the bracket (10).

2. The tunnel shield belt conveyor adaptive curve turning device according to claim 1, characterized in that: The telescopic assembly is provided with an electronic ruler (13) for reading.

3. The tunnel shield belt conveyor adaptive curve turning device according to claim 1, characterized in that: A belt conveyor frame (5) is fixedly mounted on the top of the bracket (10), a lower roller group (3) is arranged below the belt conveyor frame (5), and a grooved upper roller group (2) is arranged above the lower roller group (3) in the belt conveyor frame (5).

4. The tunnel shield belt conveyor adaptive curve turning device according to claim 3 is characterized in that: At least two travel switches are arranged on both sides of the belt conveyor frame (5) at the upper roller group (2).

5. The tunnel shield belt conveyor adaptive curve turning device according to any one of claims 1 or 4, characterized in that: The telescopic assembly also includes two hinged seats, one end of the oil cylinder (7) is rotatably connected to the bracket (10) through one of the hinged seats, and the other hinged seat is installed at the other end of the oil cylinder (7).

6. The tunnel shield belt conveyor adaptive curve turning device according to claim 5, characterized in that: A trolley top steel frame (11) is arranged below the bracket (10), the third hinged seat (9) is connected to the trolley top steel frame (11), and the other hinged seat is also connected to the trolley top steel frame (11).

Images