Coal mine tunneling supporting device

Abstract

The utility model provides a coal mine tunneling supporting device which comprises a rectangular bottom frame composed of two transverse rods and two longitudinal rods, and the transverse rods and the longitudinal rods are each of a telescopic structure. Moving wheels are arranged at the two ends of the transverse rod, a supporting rod is arranged above the transverse rod, the top of the supporting rod is connected with a double-layer telescopic plate, and a telescopic cylinder is arranged between the double-layer telescopic plate. An ejector rod is arranged above the telescopic plate on the upper layer, the top of the ejector rod is connected with an arc-shaped plate, and a longitudinal telescopic rod and a transverse telescopic rod are arranged between every two adjacent arc-shaped plates. The mine tunnel supporting device can flexibly adapt to mine tunnels of different sizes, the longitudinal telescopic rods and the transverse telescopic rods are arranged between the adjacent arc-shaped plates and form a rectangular structure capable of supporting a protection net, the transverse telescopic rods are further erected in the rectangular structure, the multi-point supporting effect is achieved, and the safety of mine tunnels is improved. And loose materials such as broken stones and coal briquettes which fall off from the top of the mine tunnel at any time can be well blocked, so that workers can more securely concentrate on anchor rod reinforcing operation.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining technology, and in particular relates to a coal mine tunneling support device. Background Technology

[0002] In coal mine tunneling operations, support work is of paramount importance, as it relates to the safety of underground workers and the smooth progress of the entire tunneling operation.

[0003] Traditional coal mine tunneling support devices have certain shortcomings in use: 1. Many existing support devices have fixed base frame dimensions, making it difficult to adapt to the operational needs of mine tunnels of different sizes, thus limiting their application range and flexibility; 2. When drilling holes for installing anchor bolts, the simple support net cannot provide stable and effective multi-point support for the top of the mine tunnel, resulting in the net's poor blocking effect on loose materials above, which can easily lead to falling rocks, coal chunks, etc., injuring personnel working below the device, posing a significant safety hazard to the underground working environment. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a coal mine tunneling support device, and the technical solution adopted is as follows:

[0005] A coal mine tunneling support device includes a rectangular base frame composed of two horizontal bars and two vertical bars, both of which are telescopic structures; movable wheels are provided at both ends of the horizontal bars, and a support rod is provided above the horizontal bars; a double-layer telescopic plate is connected to the top of the support rod, and a telescopic cylinder is provided between the double-layer telescopic plates;

[0006] A top rod is installed above the upper telescopic plate, and an arc-shaped plate is connected to the top of the top rod. Longitudinal telescopic rods and transverse telescopic rods are installed between adjacent arc-shaped plates. The two form a rectangular structure that supports the protective net. Multiple transverse telescopic rods are installed within the rectangular structure. The longitudinal and transverse telescopic rods adopt the same telescopic structure as the horizontal and vertical rods, so that they can expand and contract synchronously with the horizontal and vertical rods.

[0007] Furthermore, the crossbar is divided into two sections, one of which is provided with a transverse extension bar for insertion into the other section. The structure of the longitudinal bar is the same as that of the crossbar, one of which is provided with a longitudinal extension bar for insertion into the other section. Through the segmented telescopic structure design, the lengths of the crossbar and longitudinal bar can be flexibly adjusted according to the cross-sectional dimensions of the mine tunnel.

[0008] Furthermore, a screw is provided below the ends of the transverse and longitudinal extension rods. A guide groove is provided below the section of the transverse and longitudinal rods used to insert the extension rod. The screw moves along the guide groove and can be fixed by the screw sleeve handle. The extension rod can be locked in any extension position by tightening the screw sleeve handle.

[0009] Furthermore, the double-layer telescopic plates have the same structure, each divided into two sections, with an extension plate in one section for insertion into the other section.

[0010] Furthermore, two telescopic cylinders are installed between the two telescopic plates, and the telescopic cylinders are symmetrically arranged at both ends of the telescopic plate to drive the upper telescopic plate to rise and fall synchronously, ensuring that the top rod and the arc plate are subjected to uniform force during the lifting process.

[0011] Furthermore, the outer side of the movable wheel is provided with multiple connecting rods, and the tail end of the connecting rod is provided with a pressure plate.

[0012] Furthermore, a controller is provided between the two layers of telescopic plates on one side, and the controller is electrically connected to the telescopic cylinder.

[0013] Furthermore, the telescopic plate is located directly above the longitudinal bar, and the two are arranged parallel to each other to avoid affecting the staff's entry into the device from the position of the horizontal bar.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The horizontal and vertical bars in this utility model adopt a telescopic structural design. Through the horizontal extension bar, the vertical extension bar, and the matching screw, screw sleeve handle and other components, the size of the base frame can be easily adjusted, so that it can flexibly adapt to mine tunnels of different sizes, effectively broaden the application range of the device, enhance the versatility of the device, avoid the trouble of replacing different support devices due to differences in mine tunnel size, and improve work efficiency.

[0016] 2. In terms of supporting the protective net, this utility model uses longitudinal and transverse telescopic rods between adjacent arc-shaped plates to form a rectangular structure that supports the net. Multiple transverse telescopic rods are also installed within this rectangular structure, providing multi-point support. These rods extend and retract synchronously with the horizontal and vertical rods, thus stably and effectively supporting the net and ensuring it fits better against the top of the mine tunnel. This effectively blocks loose materials such as gravel and coal that occasionally fall from the tunnel roof. When workers stand below the net, the device provides a relatively safe, comfortable, and easy-to-operate working space, allowing them to focus more confidently on anchor bolt reinforcement work. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the state of the protective net when it is supported;

[0018] Figure 2 This is a schematic diagram of the overall telescopic structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the overall structure of this utility model when unfolded;

[0020] Figure 4 This is a schematic diagram of the connection structure between the horizontal bar and the vertical bar of this utility model;

[0021] Figure 5 This is a utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 6 This is a utility model Figure 4 Enlarged schematic diagram of the structure at point B.

[0023] In the picture:

[0024] 1-Horizontal bar, 11-Horizontal extension bar, 2-Longitudinal bar, 21-Longitudinal extension bar, 22-Screw rod, 23-Guide groove, 24-Screw sleeve handle, 3-Moving wheel, 4-Support rod, 41-Push rod, 5-Telescopic plate, 51-Extension plate, 6-Telescopic cylinder, 7-Top rod, 71-Arc plate, 8-Horizontal telescopic bar, 9-Longitudinal telescopic bar, 10-Controller. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] As attached Figure 1-6 As shown.

[0027] A coal mine tunneling support device includes a rectangular frame consisting of two horizontal bars 1 and two vertical bars 2. A movable wheel 3 is provided at both ends of the two horizontal bars 1. The above structure can form a frame that can move within the mine tunnel.

[0028] Based on the above structure, multiple connecting rods are provided on the outer side of the movable wheel 3, and a pressure plate is provided at the tail end of the connecting rod. The specific structure is shown in the attached figure. Figure 1-4 As shown, this structure allows the moving wheel 3 to move forward in the winding and uneven mine tunnel. Compared with traditional round wheels, it is less prone to slipping or getting stuck, and it can pass well when encountering potholes or protrusions.

[0029] Furthermore, to accommodate movement within mine tunnels of different sizes, the size of the underframe can be adjusted. Specifically, the crossbar 1 is divided into two sections, one of which is provided with a transverse extension bar 11 for insertion into the other section; the longitudinal bar 2 has the same structure as the crossbar 1, also divided into two sections, one of which is provided with a longitudinal extension bar 21 for insertion into the other section.

[0030] A protruding screw 22 is provided below the ends of both the transverse extension rod 11 and the longitudinal extension rod 21. A guide groove 23 is provided below the section of the transverse rod 1 and the longitudinal rod 2 for inserting the extension rod. The screw 22 can move along the guide groove 23. The lower end of the screw 22 is threadedly connected to a screw sleeve handle 24. After tightening the screw sleeve handle 24, the length of the transverse rod 1 or the longitudinal rod 2 can be fixed. After turning the screw sleeve handle 24, the length of the transverse rod 1 or the longitudinal rod 2 can be adjusted.

[0031] Above both ends of the crossbar 1 in the base frame, there are upward-extending support rods 4. Above the two support rods 4 on the same side, there are double-layer telescopic plates 5. Between the double-layer telescopic plates 5, there is a telescopic cylinder 6 for pushing the upper telescopic plate 5 up and down.

[0032] As attached Figure 1-3 As shown, two telescopic cylinders 6 are provided between the two telescopic plates 5, respectively placed at both ends of the telescopic plates 5.

[0033] Furthermore, the upper and lower telescopic plates 5 have the same structure, both divided into two sections, with an extension plate 51 in one section of the telescopic plate 5 for insertion into the other section of the telescopic plate.

[0034] Based on the above structure, the telescopic plate 5 can extend and retract synchronously with the length adjustment of the longitudinal rod 2, and the telescopic plate 5 is located directly above the longitudinal rod 2, and the two are arranged parallel to each other. This structure facilitates workers to enter the base frame to work.

[0035] A top rod 7 is provided at each end above the upper telescopic plate 5. An arc-shaped plate 71 is provided above the top rod 7. The arc-shaped plate 71 can be used to hold the beam rods in the protective net. The protective net is a commonly used component in existing coal mine support. In use, the telescopic cylinder 6 is lowered by the controller 10 located between the two telescopic plates 5 to place the protective net with the beam rods above the device. During placement, the beam rods in the protective net are kept in the arc-shaped plate 71. Then, the telescopic cylinder 6 is raised by the controller 10 to make the protective net contact the top of the coal mine, which facilitates the subsequent anchoring operation of the anchor rods.

[0036] Furthermore, to ensure the protective netting can be supported, as shown in the attached document... Figure 2 , 3As shown, longitudinal telescopic rods 9 and transverse telescopic rods 8 are provided between adjacent arc-shaped plates 71. The two form a rectangular structure that can support the protective net. Multiple transverse telescopic rods 8 are installed inside the rectangular structure, which can provide multi-point support.

[0037] Both the longitudinal telescopic rod 9 and the transverse telescopic rod 8 adopt the same telescopic structure as the horizontal or longitudinal rod, and can extend and retract synchronously with the extension and retraction of the horizontal rod 1 and the longitudinal rod 2.

[0038] A push rod 41 is installed above one of the horizontal bars 1. The push rod 41 can be used to move the device in the coal mine. When the device is in use, the workers can stand inside the base frame to work. With the protective netting placed on top, it can play a multiple protection role. It can effectively block loose materials such as gravel and coal blocks that fall from the top of the mine tunnel from time to time, preventing them from falling directly onto the workers who are working inside the base frame. This greatly improves the safety of the working environment, allowing the workers to focus more on tasks such as checking the stability of the support structure and operating related equipment for local reinforcement.

[0039] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A coal mine tunneling support device, comprising a rectangular base frame composed of two horizontal bars (1) and two vertical bars (2), characterized in that: Both the crossbar (1) and the longitudinal bar (2) are telescopic structures; there are movable wheels (3) at both ends of the crossbar (1), and a support rod (4) is provided above the crossbar (1). The top of the support rod (4) is connected to a double-layer telescopic plate (5), and a telescopic cylinder (6) is provided between the double-layer telescopic plates (5). A top rod (7) is provided above the telescopic plate (5) on the upper layer. An arc plate (71) is connected to the top of the top rod (7). A longitudinal telescopic rod (9) and a transverse telescopic rod (8) are provided between adjacent arc plates (71). The two form a rectangular structure that supports the protective net. Multiple transverse telescopic rods (8) are installed in the rectangular structure. The longitudinal telescopic rod (9) and the transverse telescopic rod (8) adopt the same telescopic structure as the horizontal rod (1) and the vertical rod (2), so that they can telescopically extend and retract synchronously with the horizontal rod (1) and the vertical rod (2).

2. The coal mine tunneling support device as described in claim 1, characterized in that: The crossbar (1) is divided into two sections, one of which is provided with a transverse extension bar (11) for insertion into the other section. The structure of the longitudinal bar (2) is the same as that of the crossbar (1), one of which is provided with a longitudinal extension bar (21) for insertion into the other section.

3. A coal mine tunneling support device as described in claim 2, characterized in that: A screw (22) is provided below the ends of the transverse extension rod (11) and the longitudinal extension rod (21). A guide groove (23) is provided below the section of the transverse rod (1) and the longitudinal rod (2) used to insert the extension rod. The screw (22) moves along the guide groove (23) and can be fixed by the screw sleeve handle (24).

4. A coal mine tunneling support device as described in claim 1, characterized in that: The double-layer telescopic plates (5) have the same structure and are divided into two sections. One section of the telescopic plate (5) is provided with an extension plate (51) for inserting into the other section of the telescopic plate.

5. A coal mine tunneling support device as described in claim 4, characterized in that: Two telescopic cylinders (6) are provided between the two telescopic plates (5) and are respectively placed at both ends of the telescopic plates (5).

6. A coal mine tunneling support device as described in claim 1, characterized in that: The outer side of the movable wheel (3) is provided with multiple connecting rods, and the tail end of the connecting rod is provided with a pressure plate.

7. A coal mine tunneling support device as described in claim 1, characterized in that: A controller (10) is provided between the two layers of telescopic plates (5) on one side.

8. A coal mine tunneling support device as described in claim 1, characterized in that: A push rod (41) is provided above the crossbar (1) on one side.

9. A coal mine tunneling support device as described in claim 1, characterized in that: The telescopic plate (5) is located directly above the longitudinal bar (2), and the two are arranged parallel to each other.

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