Reinforcing and supporting device for supporting coal mining roadway

Abstract

The utility model discloses a coal mining roadway support reinforcing and supporting device, which belongs to the technical field of coal mining roadway support and comprises a base which comprises a left single seat and a right single seat flexibly connected with the left single seat. A lifting mechanism is arranged on the base, a supporting plate is arranged on the lifting mechanism, supporting assemblies are arranged on the supporting plate, and the supporting assemblies comprise the middle supporting assembly arranged in the middle of the supporting plate, the left supporting assembly and the right supporting assembly, and the left supporting assembly and the right supporting assembly are arranged on the left side and the right side of the middle supporting assembly. The top supporting structure is redesigned according to the scheme, the top supporting structure can better adapt to unevenness of the top of the roadway, the base is designed to be of a flexibly-connected split structure, the top supporting structure can better adapt to dynamic changes of ground pressure, stress concentration at the connecting position is reduced, and stability of the whole structure is guaranteed. And the problem of local support failure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of coal mining roadway support technology, specifically to a coal mining roadway support reinforcement device. Background Technology

[0002] In coal mining, the stability of underground tunnels is one of the key factors in ensuring miner safety and improving production efficiency. Due to the influence of ground pressure and geological structure, the tunnel roof may deform, crack, or even collapse, posing a serious threat to the lives of miners.

[0003] Traditional support methods, such as using wooden supports or metal brackets, can alleviate this problem to some extent, but their compressive strength and adaptability are limited, making it difficult to meet the needs of high-strength support under complex geological conditions, and thus have some limitations:

[0004] 1. The unevenness of the roadway top prevents the top of the support device from fully contacting it, resulting in uneven stress on the support device, causing localized pressure concentration that damages the support device and reduces its safety.

[0005] 2. The base of the support device cannot adapt to dynamic changes in ground pressure (such as settlement or lateral displacement), resulting in stress concentration at the connection, loosening or breakage of bolts, decreased overall structural stability, and local support failure.

[0006] Therefore, developing an efficient and reliable roadway support reinforcement device is of great significance for ensuring safe production in coal mines. Utility Model Content

[0007] To address the aforementioned shortcomings of existing technologies, this utility model provides a reinforced support device for coal mining roadways. This reinforced support device for coal mining roadways is specifically designed for roadway support. This solution redesigns the top support structure, making it more adaptable to the unevenness of the roadway top. Furthermore, the base is designed as a flexible, split structure, which can better adapt to dynamic changes in ground pressure, reduce stress concentration at the connection points, ensure the overall structural stability, and avoid local support failure.

[0008] To solve the above-mentioned technical problems, this utility model provides a support and reinforcement device for coal mining roadways, including a base, the base including a left single seat and a right single seat flexibly connected to the left single seat; a lifting mechanism is provided on the base, a support plate is provided on the lifting mechanism, and a support assembly is provided on the support plate, the support assembly including a central support assembly located in the middle of the support plate and a left support assembly and a right support assembly located on the left and right sides of the central support assembly.

[0009] In a further improvement of this utility model, a left horizontal rubber elastic joint is connected to the right side of the left single seat, a horizontal reinforcing rod is connected to the left horizontal rubber elastic joint, a right horizontal rubber elastic joint is connected to the horizontal reinforcing rod, and the right horizontal rubber elastic joint is connected to the left side of the right single seat.

[0010] Through the above design, this solution can more easily reinforce the internal connection of the base while also making it easier for the left and right single seats to adapt to dynamic changes in ground pressure.

[0011] In a further improvement of this utility model, the front and rear sides of the left single seat are respectively connected to a left longitudinal rubber elastic joint, and the left longitudinal rubber elastic joint is connected to a left longitudinal reinforcing rod; the front and rear sides of the right single seat are respectively connected to a right longitudinal rubber elastic joint, and the right longitudinal rubber elastic joint is connected to a right longitudinal reinforcing rod.

[0012] Through the above design, this scheme makes it easier to connect adjacent devices and also makes it easier for a single device to adapt to dynamic changes in ground pressure.

[0013] In a further improvement of this utility model, reinforcing teeth are respectively provided at the bottom of the left single seat, the bottom of the right single seat, the bottom of the horizontal reinforcing rod, the bottom of the left longitudinal reinforcing rod, and the bottom of the right longitudinal reinforcing rod.

[0014] The above design makes this solution easier to fix.

[0015] In a further improvement of this utility model, the lifting mechanism adopts a hydraulic support.

[0016] The above design makes this solution easier to implement.

[0017] In a further improvement of this utility model, the support assembly includes a double-spring nesting mechanism, and the double-spring nesting mechanism is connected to an arc-shaped support plate.

[0018] Through the above design, this solution can be more easily adapted to high-frequency impact loads.

[0019] In a further improvement of this utility model, the double-spring nesting mechanism includes a helical spring and a disc spring located inside the helical spring.

[0020] Through the above design, this solution can be more easily adapted to high-frequency impact loads.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This utility model is specifically designed for roadway support. The top support structure is redesigned to better adapt to the unevenness of the roadway top. The base is designed as a flexible, split structure, which can better adapt to dynamic changes in ground pressure, reduce stress concentration at the connection, ensure the overall structural stability, and avoid local support failure. Attached Figure Description

[0023] To more clearly illustrate the background technology or the technical solution of this utility model, the accompanying drawings used in conjunction with the prior art or specific embodiments are briefly introduced below. Obviously, the structures, proportions, sizes, etc., shown in the accompanying drawings are only used to complement the content disclosed in the specification, so as to enable those skilled in the art to understand and read them, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0024] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0025] The diagram shows: 1. Left single seat; 101. Left longitudinal rubber elastic joint; 2. Right single seat; 201. Right longitudinal rubber elastic joint; 3. Lifting mechanism; 4. Support plate; 5. Left transverse rubber elastic joint; 6. Transverse reinforcing rod; 7. Right transverse rubber elastic joint; 8. Reinforcing tooth; 9. Helical spring; 10. Disc spring; 11. Arc-shaped support plate. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0027] Meanwhile, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Changes or adjustments to the relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0028] Furthermore, it should be noted in the description of this specification that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0029] Traditional support methods, such as using wooden supports or metal brackets, can alleviate this problem to some extent, but their compressive strength and adaptability are limited, making it difficult to meet the needs of high-strength support under complex geological conditions, and thus have some limitations:

[0030] The unevenness of the tunnel roof prevents the top of the support device from fully contacting it, resulting in uneven stress on the support device. This causes localized pressure concentration, damaging the support device and reducing its safety. Furthermore, the base of the support device cannot adapt to dynamic changes in ground pressure (such as settlement or lateral displacement), leading to stress concentration at the connection points, loosening or breakage of bolts, a decrease in overall structural stability, and localized support failure.

[0031] Therefore, developing an efficient and reliable roadway support reinforcement device is of great significance for ensuring safe production in coal mines.

[0032] The design concept of this application is to redesign the top support structure into a split middle support component, a left support component, and a right support component, which can better adapt to the unevenness of the roadway top. The base is designed as a flexible split structure (left single seat and right single seat flexibly connected to the left single seat), which can better adapt to dynamic changes in ground pressure, reduce stress concentration at the connection, ensure the overall structural stability, and avoid the problem of local support failure.

[0033] like Figure 1 As shown, this application provides a support reinforcement device for coal mining roadways, including a base, the base including a left single seat 1 and a right single seat 2 flexibly connected to the left single seat 1; a lifting mechanism 3 is provided on the base, a support plate 4 is provided on the lifting mechanism 3, and a support assembly is provided on the support plate 4, the support assembly including a middle support assembly provided in the middle of the support plate and a left support assembly and a right support assembly provided on the left and right sides of the middle support assembly.

[0034] The left single seat 1 is connected to a left horizontal rubber elastic joint 5 on its right side. The left horizontal rubber elastic joint 5 is connected to a horizontal reinforcing rod 6. The horizontal reinforcing rod 6 is connected to a right horizontal rubber elastic joint 7. The right horizontal rubber elastic joint 7 is connected to the left side of the right single seat 2. Through the connection structure of the left horizontal rubber elastic joint 5-horizontal reinforcing rod 6-right horizontal rubber elastic joint 7, the left single seat 1 and the right single seat 2 are reinforced and connected, while also better adapting to dynamic changes in ground pressure, reducing stress concentration at the connection, and ensuring the overall structural stability.

[0035] In this design, the front and rear sides of the left single seat 1 are respectively connected to a left longitudinal rubber elastic joint 101, and the left longitudinal rubber elastic joint 101 is connected to a left longitudinal reinforcing rod. The front and rear sides of the right single seat 2 are respectively connected to a right longitudinal rubber elastic joint 201, and the right longitudinal rubber elastic joint 201 is connected to a right longitudinal reinforcing rod. By setting rubber elastic joints (left longitudinal rubber elastic joint 101 and right longitudinal rubber elastic joint 201) on the front and rear sides of the left single seat 1 and the right single seat 2, multiple units can be connected together for use. A single coal mining roadway support reinforcement device can be sequentially connected by the left longitudinal rubber elastic joint 101, the left longitudinal reinforcing rod, the right longitudinal rubber elastic joint 201, and the right longitudinal reinforcing rod.

[0036] Rubber elastic joints (left horizontal rubber elastic joint 5, right horizontal rubber elastic joint 7, left longitudinal rubber elastic joint 101, right longitudinal rubber elastic joint 201) allow a deflection angle of ±5°. Prestressed washers are added at the bolt connections to dynamically compensate for loosening. The effect is to adapt to the deformation of the surrounding rock, reduce stress concentration, and improve the reliability of the connection.

[0037] The bottom of the left single seat 1, the bottom of the right single seat 2, the bottom of the horizontal reinforcing rod 6, the bottom of the left longitudinal reinforcing rod, and the bottom of the right longitudinal reinforcing rod are respectively provided with reinforcing teeth 8. The reinforcing teeth 8 are designed to make the above components more firmly installed on the ground. When in use, pressure (such as hammering) is applied directly to the left single seat 1, the right single seat 2, the horizontal reinforcing rod 6, the left longitudinal reinforcing rod, and the right longitudinal reinforcing rod, and the reinforcing teeth 8 can be inserted into the ground.

[0038] The lifting mechanism 3 adopts a hydraulic support. The use of a hydraulic support in the lifting mechanism 3 is more convenient for productization and use as soon as possible, and the hydraulic support is more suitable for the harsh environment of mining tunnels than a pneumatic cylinder or an electric cylinder.

[0039] The support assembly includes a double-spring nesting mechanism, which is connected to an arc-shaped support plate 11. The arc-shaped support plate 11 is more suitable for most tunnel roofs (most tunnel roofs are arc-shaped). Note that when the tunnel roof is flat, the double-spring nesting mechanism is connected to a flat support plate, that is, the double-spring nesting mechanism is connected to an arc-shaped support plate 11 or a support plate.

[0040] The double-spring nesting mechanism includes a helical spring 9 and a disc spring 10 located inside the helical spring 9. The double-spring nesting mechanism enables the arc-shaped support plate 11 to be elastically adjusted according to the force. The spring itself has a certain supporting force and can deform differently according to different force conditions, playing a buffering role, thereby improving the bearing capacity of the support plate and preventing damage due to uneven force.

[0041] The double-spring nested structure of this application (the outer helical spring provides initial stiffness, and the inner disc spring bears the impact load) disperses stress concentration; the spring material is upgraded to 60Si2MnA alloy steel (fatigue limit is increased by 30%), and the surface is nitrided to enhance wear resistance, thus extending the spring life by more than 2 times and adapting to high-frequency impact loads.

[0042] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those skilled in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims

1. A support and reinforcement device for coal mining roadways, characterized in that, The system includes a base, which comprises a left single seat and a right single seat flexibly connected to the left single seat; a lifting mechanism is provided on the base, a support plate is provided on the lifting mechanism, and a support assembly is provided on the support plate, the support assembly comprising a central support assembly located in the middle of the support plate and a left support assembly and a right support assembly located on the left and right sides of the central support assembly.

2. The coal mining roadway support reinforcement device according to claim 1, characterized in that, The left single seat is connected to a left horizontal rubber elastic joint on the right side, which is connected to a horizontal reinforcing rod. The horizontal reinforcing rod is connected to a right horizontal rubber elastic joint, which is connected to the left side of the right single seat.

3. The coal mining roadway support reinforcement device according to claim 2, characterized in that, The left single seat is connected to a left longitudinal rubber elastic joint on the front and rear sides respectively, and the left longitudinal rubber elastic joint is connected to a left longitudinal reinforcing rod. The right single seat is connected to a right longitudinal rubber elastic joint on the front and rear sides respectively, and the right longitudinal rubber elastic joint is connected to a right longitudinal reinforcing rod.

4. The coal mining roadway support reinforcement device according to claim 3, characterized in that, The bottom of the left single seat, the bottom of the right single seat, the bottom of the horizontal reinforcing rod, the bottom of the left longitudinal reinforcing rod, and the bottom of the right longitudinal reinforcing rod are each provided with reinforcing teeth.

5. The coal mining roadway support reinforcement device according to claim 1, characterized in that, The lifting mechanism uses a hydraulic support.

6. The coal mining roadway support reinforcement device according to claim 1, characterized in that, The support assembly includes a double-spring nesting mechanism, which is connected to an arc-shaped support plate.

7. The coal mining roadway support reinforcement device according to claim 6, characterized in that, The double-spring nesting mechanism includes a helical spring and a disc spring located inside the helical spring.

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