Tunneling support device for roadway excavation

Abstract

The utility model discloses a tunneling support device for roadway excavation, and relates to the technical field of roadway excavation, the tunneling support device comprises a support frame and a bearing iron sheet, the front end of the right side of the support frame is provided with a servo motor I, and the output end of the servo motor I penetrates through the right side of the support frame and is connected with a positive and negative tooth screw rod I; a belt is connected to the exterior of the first positive and negative tooth lead screw, a second positive and negative tooth lead screw is further connected to the interior of the belt, first nut seats are connected to the exterior of the first positive and negative tooth lead screw and the exterior of the second positive and negative tooth lead screw, an adapter plate is arranged at the top of each first nut seat, a supporting frame is fixed to the side face of each adapter plate, and a guide roller is installed at the edge of each supporting frame. According to the tunneling supporting device for roadway excavation, a second servo motor works to drive a third positive and negative tooth lead screw to rotate, so that two second nut seats do opposite or reverse transverse displacement along the third positive and negative tooth lead screw, a supporting frame is made to ascend or descend, and therefore the tunneling supporting device is suitable for supporting foundation pits with different heights.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel excavation, in particular to a tunneling support device used for tunnel excavation. Background Art

[0002] A tunnel refers to a passage excavated for mining hoisting, transportation, ventilation, drainage, power supply, etc. during underground mining. It also refers to the narrower streets in the city, as well as the roads under piers or bridges. According to the relationship between the long axis of the tunnel and the horizontal plane, it is divided into three categories: vertical tunnels, horizontal tunnels and inclined tunnels. In order to mine coal, all kinds of passages and chambers excavated from the ground to the underground are called tunnels. The operating method used to excavate these passages and chambers is called tunnel excavation. During the excavation operation, it is necessary to use support devices to support its space.

[0003] For example, the utility model with application number CN202120954822.9 discloses a temporary support device for tunnel excavation. When the utility model is actually used, the staff can adjust the height and width of the support device according to the height and width of the tunnel to prevent the support device from being unable to support the tunnel or unable to enter the tunnel, so that the support device can match tunnels of different heights and widths, thereby improving the practicality of the support device. However, rocks will fall from above the tunnel, and the rocks will accumulate on the top of the device, which will increase the overall weight and cause the device to collapse.

[0004] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and an excavation support device for tunnel excavation is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a tunneling support device for tunnel excavation to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tunneling support device for tunnel excavation, comprising a support frame and a receiving iron sheet, a servo motor 1 is installed at the right front end of the support frame, and the output end of the servo motor 1 passes through the right side of the support frame and is connected to a forward and reverse screw rod 1, the outside of the forward and reverse screw rod 1 is connected to a belt, and the inside of the belt is also connected to a forward and reverse screw rod 2, the outsides of the forward and reverse screw rod 1 and the forward and reverse screw rod 2 are both connected to a nut seat 1, and an adapter plate is provided on the top of the nut seat 1, a support frame is fixed to the side of the adapter plate, and a guide roller is installed at the edge of the support frame, a forward and reverse motor 1 is installed below the front end of the support frame located on the right side of the support frame, and a winding roller 1 is connected to the output end of the forward and reverse motor 1, the receiving iron sheet is connected to the outer side of the winding roller 1, and the other end of the receiving iron sheet is connected to the winding roller 2, and the forward and reverse motor 2 is installed below the front end of the support frame located on the left side of the support frame.

[0007] Furthermore, the forward and reverse screw rods 1 and the forward and reverse screw rods 2 are parallel to each other, and the quantity ratio of the nut seat 1 and the adapter plate is 2:1.

[0008] Furthermore, the support frame is L-shaped, and the support frame is inserted into through grooves above both sides of the support frame.

[0009] Furthermore, two of the support frames and guide rollers are provided, and the receiving iron sheet is tightly fitted to the guide rollers.

[0010] Furthermore, the outer part of the support frame is rotatably connected with an adjustment component, and the adjustment component includes a connecting rod and a connecting rod seat, and the other end of the connecting rod is connected to the connecting rod seat via a rotating shaft.

[0011] Furthermore, the adjustment component also includes a nut seat 2 and a positive and negative threaded rod 3, and the nut seat 2 is arranged at the bottom of the connecting rod seat, and the middle part of the nut seat 2 is connected to the positive and negative threaded rod 3.

[0012] Furthermore, the adjustment component also includes a support seat and a servo motor 2, and one end of the forward and reverse screw rod 3 is connected to the support seat, and the other end of the forward and reverse screw rod 3 passes through the front end of the support seat and is connected to the servo motor 2.

[0013] The utility model provides a tunneling support device for tunnel excavation, which has the following beneficial effects:

[0014] 1. The utility model drives the unwinding roller 1 and the unwinding roller 2 to rotate counterclockwise respectively through the forward and reverse motors 1 and 2, so as to transfer a part of the receiving iron sheet wound on the outside of the unwinding roller 1 to the outside of the unwinding roller 2. During the transfer, the fallen rocks accumulated on the top of the receiving iron sheet will slide to one side of the support frame, thereby achieving the purpose of reducing the bearing pressure.

[0015] 2. The servo motor 2 of the utility model drives the forward and reverse screw rods 3 to rotate, so that the two nut seats 2 are displaced toward or away from each other along the forward and reverse screw rods 3, causing the support frame to rise or fall, thereby adapting to foundation pit supports of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a tunneling support device for tunnel excavation according to the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of a support frame of a tunneling support device for tunnel excavation according to the utility model when viewed from above;

[0018] Figure 3 The utility model is a schematic diagram of a side view of a three-dimensional structure of a support frame of a tunneling support device for tunnel excavation.

[0019] In the figure: 1. Support frame; 2. Servo motor 1; 3. Forward and reverse screw rod 1; 4. Belt; 5. Forward and reverse screw rod 2; 6. Nut seat 1; 7. Adapter plate; 8. Support frame; 9. Guide roller; 10. Forward and reverse motor 1; 11. Winding roller 1; 12. Supporting iron sheet; 13. Forward and reverse motor 2; 14. Winding roller 2; 15. Adjustment assembly; 1501. Connecting rod; 1502. Connecting rod seat; 1503. Nut seat 2; 1504. Forward and reverse screw rod 3; 1505. Support seat; 1506. Servo motor 2. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figures 1 to 3 As shown, a tunneling support device for tunnel excavation includes a support frame 1 and a receiving iron sheet 12, a servo motor 2 is installed at the front end of the right side of the support frame 1, and the output end of the servo motor 2 passes through the right side of the support frame 1 and is connected to a positive and negative threaded rod 3, the outside of the positive and negative threaded rod 3 is connected to a belt 4, and the inside of the belt 4 is also connected to a positive and negative threaded rod 2 5, the outsides of the positive and negative threaded rod 3 and the positive and negative threaded rod 2 5 are both connected to a nut seat 6, and an adapter plate 7 is provided on the top of the nut seat 6, a support frame 8 is fixed to the side of the adapter plate 7, and a guide roller 9 is installed at the edge of the support frame 8, and the support frame 8 located on the right side of the support frame 1 A forward and reverse motor 10 is installed below the front end, and the output end of the forward and reverse motor 10 is connected to a winding roller 11, a receiving iron sheet 12 is connected to the outer side of the winding roller 11, and the other end of the receiving iron sheet 12 is connected to a winding roller 2 14, and a forward and reverse motor 2 13 is installed below the front end of the support frame 8 located on the left side of the support frame 1, the forward and reverse screw rods 1 3 and the forward and reverse screw rods 2 5 are parallel to each other, the number ratio of the nut seat 1 6 and the adapter plate 7 is 2:1, the support frame 8 is L-shaped, the support frame 8 is inserted into the through groove above the two sides of the support frame 1, and two support frames 8 and guide rollers 9 are provided, and the receiving iron sheet 12 is tightly fitted with the guide roller 9.

[0022] The specific operation is as follows: the forward and reverse motor 10 and the forward and reverse motor 2 13 are used to drive the winding roller 11 and the winding roller 2 14 to rotate counterclockwise respectively, so that a part of the receiving iron sheet 12 wound on the outside of the winding roller 11 can be transferred to the outside of the winding roller 2 14. During the transfer, the fallen rocks accumulated above the receiving iron sheet 12 will slide to the side of the support frame 8, thereby achieving the purpose of reducing the bearing pressure.

[0023] like Figure 3As shown, the external rotation of the support frame 8 is connected with an adjustment component 15, and the adjustment component 15 includes a connecting rod 1501 and a connecting rod seat 1502, the other end of the connecting rod 1501 is connected to the connecting rod seat 1502 through a rotating shaft, the adjustment component 15 also includes a nut seat 1503 and a positive and negative threaded rod 1504, and the bottom of the connecting rod seat 1502 is provided with a nut seat 1503, the middle part of the nut seat 1503 is connected to the positive and negative threaded rod 1504, the adjustment component 15 also includes a support seat 1505 and a servo motor 1506, one end of the positive and negative threaded rod 1504 is connected to the support seat 1505, and the other end of the positive and negative threaded rod 1504 passes through the front end of the support seat 1505 and is connected to the servo motor 1506.

[0024] The specific operation is as follows: the servo motor 2 1506 drives the forward and reverse screw rods 3 1504 to rotate, so that the two nut seats 2 1503 make lateral displacements toward or away from each other along the forward and reverse screw rods 3 1504, causing the support frame 8 to rise or fall, thereby adapting to foundation pit supports of different heights.

[0025] In summary, when the excavation support device for tunnel excavation is used, the device is first moved to a suitable position in the tunnel by means of the casters with brakes provided at the bottom of the support seat 1505, and then the servo motor 12 is controlled to drive the positive and negative threaded rod 13 to rotate, and the positive and negative threaded rod 13 drives the belt 4 to drive the positive and negative threaded rod 25 to rotate, and the nut seat 16 that is respectively displaced in opposite directions on the outside of the positive and negative threaded rod 13 and the positive and negative threaded rod 25 is used to change the distance between the adapter plates 7, that is, the support frame 8 is caused to slide in the through grooves above the two sides of the support frame 1, so that the support frame 8 finally presses against the inner wall of the tunnel for support;

[0026] In the process of increasing the distance between the support frames 8, the forward and reverse motor 10 and the forward and reverse motor 2 13 will drive the unwinding roller 11 and the unwinding roller 2 14 to rotate counterclockwise and clockwise respectively, and release a part of the receiving iron sheet 12 to adapt to lanes of different widths;

[0027] Then, the servo motor 2 1506 drives the forward and reverse screw rod 3 1504 to rotate, and the two nut seats 2 1503 make lateral displacements toward each other along the forward and reverse screw rod 3 1504, thereby changing the angle of the connecting rod 1501 on the connecting rod seat 1502, causing the support frame 8 to rise, until the support frame 1 presses the receiving iron sheet 12 against the top of the tunnel for support;

[0028] When fallen rocks accumulate on the receiving iron sheet 12, the forward and reverse motors 10 and 13 respectively drive the unwinding roller 11 and the unwinding roller 14 to rotate counterclockwise, so that a part of the receiving iron sheet 12 wound on the outside of the unwinding roller 11 can be transferred to the outside of the unwinding roller 2 14, so that the fallen rocks accumulated on the receiving iron sheet 12 slide to the side of the supporting frame 8, thereby achieving the purpose of reducing the bearing pressure.

[0029] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A tunneling support device for tunnel excavation, comprising a support frame (1) and a receiving iron sheet (12), characterized in that: A servo motor (2) is installed at the front end of the right side of the support frame (1), and the output end of the servo motor (2) passes through the right side of the support frame (1) and is connected to a positive and negative threaded rod (3), the outside of the positive and negative threaded rod (3) is connected to a belt (4), and the inside of the belt (4) is also connected to a positive and negative threaded rod (5), the outsides of the positive and negative threaded rod (3) and the positive and negative threaded rod (5) are both connected to a nut seat (6), and an adapter plate (7) is arranged on the top of the nut seat (6), and a side of the adapter plate (7) is fixed with A support frame (8) is provided, and a guide roller (9) is installed at the edge of the support frame (8); a forward and reverse motor (10) is installed below the front end of the support frame (8) on the right side of the support frame (1); and the output end of the forward and reverse motor (10) is connected to a winding roller (11); the receiving iron sheet (12) is connected to the outer side of the winding roller (11); and the other end of the receiving iron sheet (12) is connected to a winding roller (14); and a forward and reverse motor (13) is installed below the front end of the support frame (8) on the left side of the support frame (1).

2. The tunneling support device for tunnel excavation according to claim 1, characterized in that: The positive and negative threaded rods 1 (3) and the positive and negative threaded rods 2 (5) are parallel to each other, and the quantity ratio of the nut seat 1 (6) and the adapter plate (7) is 2:

1.

3. The tunneling support device for tunnel excavation according to claim 1, characterized in that: The support frame (8) is L-shaped and is inserted into through slots above both sides of the support frame (1).

4. The tunneling support device for tunnel excavation according to claim 1, characterized in that: The support frame (8) and the guide roller (9) are both provided with two, and the receiving iron sheet (12) is tightly fitted to the guide roller (9).

5. The tunneling support device for tunnel excavation according to claim 1, characterized in that: The outer portion of the support frame (8) is rotatably connected to an adjustment component (15), and the adjustment component (15) comprises a connecting rod (1501) and a connecting rod seat (1502), and the other end of the connecting rod (1501) is connected to the connecting rod seat (1502) via a rotating shaft.

6. The tunneling support device for tunnel excavation according to claim 5, characterized in that: The adjustment assembly (15) also includes a nut seat 2 (1503) and a positive and negative threaded rod 3 (1504), and the bottom of the connecting rod seat (1502) is provided with a nut seat 2 (1503), and the middle part of the nut seat 2 (1503) is connected to the positive and negative threaded rod 3 (1504).

7. The excavation support device for tunnel excavation according to claim 6, characterized in that: The adjustment assembly (15) further comprises a support seat (1505) and a servo motor 2 (1506), and one end of the forward and reverse screw rod 3 (1504) is connected to the support seat (1505), and the other end of the forward and reverse screw rod 3 (1504) passes through the front end of the support seat (1505) and is connected to the servo motor 2 (1506).

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