Transverse self-moving unit hydraulic support for supporting coal mine tunnel

Abstract

The utility model belongs to the field of hydraulic supports, and particularly relates to a transverse self-moving unit hydraulic support for coal mine roadway supporting, which comprises a top beam, a first pin shaft, a second pin shaft, a fourth pin shaft, a fifth pin shaft, a sixth pin shaft, a seventh pin shaft, an eighth pin shaft, a ninth pin shaft and a tenth pin shaft. A first pressing block is fixedly installed at the upper end of the stand column through a first pin shaft, and the first pressing block and the top beam are fixedly installed through a second pin shaft. A four-connecting-rod structure and a shield beam structure in a traditional hydraulic support are omitted, the support structure is simplified to the maximum extent, and the size of the hydraulic support is shortened. The stand columns are in spherical fit with the top beam and the base, it is ensured that the stand columns, the top beam and the base have the good stress state, the top beam and the stand columns have the enough deflection angle, and the device can adapt to all rectangular, arch-shaped and trapezoidal roadway section shapes, conforms to the using habits of mine parties and can effectively bear mine ground pressure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of hydraulic support, concretely relates to a transverse self-moving unit hydraulic support for coal mine roadway support. BACKGROUND

[0002] The hydraulic support is the key equipment of the comprehensive mechanized coal mining equipment, and its function is to effectively support and control the working face roof, to ensure the safe operation space of the workers and equipment, to have the important significance to the coal mine safety production, the working face output improvement, the improvement of the working face labor intensity and the improvement of the labor efficiency.

[0003] The hydraulic support is composed of a bearing structure, a hydraulic cylinder, a hydraulic control system and other auxiliary devices. The bearing structure of the traditional hydraulic support mainly includes a top beam, a shield beam, a base, front and rear connecting rods and other welded structural members. The top beam directly contacts with the roof, transmits the support force and plays a role of roof protection. The base directly contacts with the floor, transmits the support force and is used for supporting other components. The shield beam connects the top beam, the base and the connecting rod, and bears the horizontal force of the support and the pressure of the collapsed roof rock.

[0004] According to the use position of the hydraulic support, the hydraulic support can be divided into a working face hydraulic support and a roadway hydraulic support. The so-called roadway hydraulic support is used in the working face transportation roadway and the air return roadway, is responsible for supporting the roadway roof and floor, maintains the stability of the roadway roof, and controls the roof subsidence.

[0005] The traditional roadway support has the forms of wood support column, wood pile, steel beam, single support combined with hinged beam, etc. With the rapid development and progress of science and technology, the traditional advanced support method gradually does not match the requirements of modern mine construction. Among them, the single support, as a small supporting device, is still widely used in advanced support because of its small size, light weight, reliable support, convenient use and maintenance, low comprehensive cost. However, for the roadway with wide mining influence range, long distance and large pressure, the single support combined with hinged beam cannot completely meet the requirements of advanced support in terms of support strength, height, speed, automation degree, safety, reliability and the like.

[0006] The two-column alternate step self-moving hydraulic support and the front-rear integral sequential self-moving hydraulic support are two structural types of the currently mature and widely used roadway supporting hydraulic support in China. The two-column alternate step self-moving hydraulic support, as a modern supporting device, has the advantages of high supporting strength, simple operation and good safety. However, the hydraulic support needs to move forward as a whole, and each action needs one push step, and all the hydraulic supports must complete a complete action cycle such as lowering, moving and raising, which easily causes serious damage to the roadway roof and the anchor netting and cable supporting system, and causes roof leakage and roof fall accidents. In addition, due to the supporting principle and structure of the two-column alternate step self-moving hydraulic support, when the roadway supporting strength requirement is high, increasing the number and cylinder diameter of the columns will inevitably increase the size of the support structure and the initial support force, thereby causing a series of adverse effects such as higher frequency, larger repeated supporting force and larger moving resistance. Therefore, the two-column alternate step self-moving hydraulic support is no longer feasible in the roadway with wide mining influence range, serious roof and floor crushing and high pressure. The common roadway supporting hydraulic support in coal mines does not have a self-moving function, and needs to rely on single props or manual hoists, winches and other devices for assistance to realize the support leaning on the side or centering, which has large labor intensity, complicated operation, low work efficiency and great safety hazards. Therefore, how to automatically lean on the side and center the unit hydraulic support is particularly important for improving the work efficiency of the unit support moving and the safety coefficient of the support. Practical new type content

[0007] The coal mine roadway supporting horizontal self-moving unit hydraulic support can solve the problems of complicated support moving process and insufficient safety.

[0008] To achieve the above objectives, this utility model provides a transverse self-moving unit hydraulic support for coal mine roadway support, comprising a top beam, pins one, two, four, five, six, seven, eight, nine, and ten. The top beam has a spherical structure that mates with the spherical surface of a column. A pressure block is fixedly installed at the upper end of the column via pin one. The pressure block is fixedly installed to the top beam via pin two. The lower spherical surface of the other end of the column mates with the spherical structure of a base. A pressure plate is fixedly installed at the lower end of the column via pin nine, and the pressure plate is fixedly connected to the base. A side support plate is fixedly installed on the outer side of the base via pin ten. A side-support jack is fixedly installed on the side, and the output end of the side-support jack is fixedly connected to the column. A lifting sleeve is fixedly installed on the upper end of the base through pin seven. A lifting jack is fixedly installed on the lifting sleeve through pin four. A pad is fixedly installed on the output end of the lifting jack. A transverse jack is fixedly installed on the outer side of the base. A pressure block two is fixedly installed on the transverse jack through pin eight. The output end of the transverse jack is fixedly installed to the lifting sleeve through pin five. A transverse guide rod is fixedly installed on the output end of the transverse jack. The transverse guide rod is fixedly installed to the lifting sleeve through pin six. The transverse guide rod is fixedly connected to the base.

[0009] The principle of this utility model is as follows: The top beam is a box-shaped structure composed of four main ribs, transverse ribs, a top plate, and a web plate. The top plate is bent at the front and rear to prevent it from scraping the mesh. The top beam is connected to the column via a pressure block. Anti-tipping devices are pre-installed at the front and rear ends of the top beam. Lifting rings are also provided around the top beam for easy overall hoisting during cyclical movement. The top beam and column use a spherical fit and are connected via pin one, pressure block one, and pin two. Lifting rings are also provided around the top beam for easy overall hoisting during cyclical movement. The base is the bottom support component of the hydraulic support. The base has an arc structure around its perimeter to facilitate lateral and longitudinal movement of the support. The front and rear ends of the base are connected to the transverse jack, transverse guide rod, bottom-lifting sleeve, bottom-lifting jack, and pad plate via pin four, pin five, pin six, pin seven, pin eight, and pressure block two, respectively.

[0010] The support frame can be raised and moved laterally to the left and right by a combination of a lifting device and a lateral movement device. The side support plates are connected to the base via pin four, and can rotate 90°. The columns and top beams use a spherical fit, connected to the top beam via pin one, a pressure block, and pin two. Both the columns and bases use a spherical fit, connected to the base via a pressure plate and pin three, and fixed with clamps. An innovative design incorporates side support plates on both sides of the base, which can be rotated 90° to open the support base during use, increasing the ground contact area. During transport, the support base plates can be rotated 90° to retract, reducing the overall width and facilitating transport. A lifting device consisting of lifting sleeves and lifting jacks is installed around the base. Combined with a lateral movement device consisting of lateral movement jacks and lateral movement guide rods located at the front and rear of the base, the support frame can be raised and moved laterally to the left and right.

[0011] The beneficial effects of this utility model are as follows: it omits the four-link structure and shield beam structure of traditional hydraulic supports, simplifying the support structure to the greatest extent and shortening the size of the hydraulic support. The column, top beam, and base adopt a spherical fit, ensuring that the column, top beam, and base have a good stress state. The top beam and column have sufficient deflection angle, which can adapt to all roadway cross-sectional shapes such as rectangular, arched, and trapezoidal, conforming to the usage habits of mine operators and effectively withstanding mine pressure. The traditional step-by-step self-moving support type has been changed to a transport-type circulating support, avoiding repeated support of the roof, which is conducive to maintaining roof stability and preventing premature roof breakage. Compared with ordinary single hydraulic props, the initial support pressure is increased from 12MPa to 31.5MPa, the initial support force is increased from 90kN to 3090kN, and the roof support strength is as high as 4.17MPa, which can effectively control roof subsidence and has strong support capabilities.

[0012] This innovative design incorporates a lifting and lateral movement device, addressing the shortcomings of current hydraulic supports for coal mine roadways. These supports lack self-movement capabilities, requiring assistance from individual props or manual hoists and winches to achieve support alignment or centering. This process is labor-intensive, cumbersome, inefficient, and poses significant safety hazards. The new design enables automatic support alignment and centering, improving the efficiency of unit support relocation and enhancing the safety factor of the installation. Simultaneously, it significantly reduces the weight of the hydraulic support, placing it at only 20% to 30% of the weight of traditional two-row roadway hydraulic supports. This substantial reduction in support relocation workload improves the working environment for employees and plays a crucial role in ensuring safe and efficient production. It provides robust equipment support for coal mine safety, aligns with the development trend of roadway hydraulic supports, and demonstrates significant advancements.

[0013] Furthermore, the top beam is a box-shaped structure composed of four main reinforcing bars, transverse reinforcing bars, a top plate, and a web plate, with the top plate bent at the beginning and end. This design of the top beam prevents the frame from shifting and scraping the mesh.

[0014] Furthermore, the base is surrounded by arc-shaped structures. This arc-shaped base design facilitates the horizontal and vertical movement of the support frame.

[0015] Furthermore, the side support plate is hinged to the base, and a jack connecting lug is provided on the outer side of the base. By designing the hinge between the side support plate and the base, the side support plate can be rotated 90°. When retracted, the support width is 830mm, and when extended, the support width is 1380mm. This facilitates transportation and installation, and effectively enhances the support's anti-overturning ability and stability.

[0016] Furthermore, the base, top beam, and side support plates are all designed with transport holes and fixing holes. These holes facilitate safe loading and securing the components.

[0017] Furthermore, the number of columns is two, and the columns are telescopic. By designing telescopic columns, the support can move from low to high and support the top plate.

[0018] Furthermore, a clamp is fixedly fitted to the outer side of the column, and the clamp is fixedly connected to the base. By designing the clamp, the column and the base can be securely fixed. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a transverse self-moving unit hydraulic support for coal mine roadway support, as described in this utility model embodiment. Figure 1 ;

[0020] Figure 2 This utility model provides an embodiment of a transverse self-moving unit hydraulic support for coal mine roadway support. Figure 1 Enlarged view of the top beam structure;

[0021] Figure 3 This utility model provides an embodiment of a transverse self-moving unit hydraulic support for coal mine roadway support. Figure 1 Left view of the structure;

[0022] Figure 4 This utility model provides an embodiment of a transverse self-moving unit hydraulic support for coal mine roadway support. Figure 3 Left view of the raised sleeve structure;

[0023] Figure 5 This is a schematic diagram of the overall structure of a transverse self-moving unit hydraulic support for coal mine roadway support, as described in this utility model embodiment. Figure 2 . Detailed Implementation

[0024] The following detailed description illustrates the specific implementation method:

[0025] The reference numerals in the accompanying drawings include:

[0026] 1. Top beam; 2. Base; 3. Side support plate; 4. Column; 5. Side support jack; 6. Bottom lifting sleeve; 7. Bottom lifting jack; 8. Pad plate; 9. Horizontal movement jack; 10. Horizontal movement guide rod; 11. Pin 1; 12. Pressure block 1; 13. Pin 2; 14. Pin 4; 15. Pin 5; 16. Pin 6; 17. Pin 7; 18. Pin 8; 19. Pressure block 2; 20. Clamp; 21. Pressure plate; 22. Pin 9; 23. Pin 10.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, this embodiment provides a transverse self-moving unit hydraulic support for coal mine roadway support, including a top beam 1, pin 11, pin 2 13, pin 4 14, pin 5 15, pin 6 16, pin 7 17, pin 8 18, pin 9 22, and pin 10 23. A column 4 is slidably sleeved inside the top beam 1. There are two columns 4, which are telescopic. By designing the telescopic columns 4, the support can move from low to high and support the roof plate. The top beam 1 is a box-shaped structure composed of four main ribs, transverse ribs, a roof plate, and a web plate. The top plate is bent at the front and rear. By designing the top beam 1, it can prevent the support from shifting and scraping the mesh. A pressure block 12 is fixedly installed at the upper end of the column 4 via pin 11. The pressure block 12 is fixedly installed to the top beam 1 via pin 2 13. A base 2 is slidably sleeved on the outer side of the column 4.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a clamp 20 is fixedly sleeved on the outside of the column 4, and the clamp 20 is fixedly connected to the base 2. By designing the clamp 20, the column 4 and the base 2 can be firmly fixed. The base 2 is equipped with a rounded structure on all four sides. By designing the base 2 as a rounded structure, it is easy for the support to be pulled and moved horizontally and vertically. The lower end of the column 4 is fixedly installed with a pressure plate 21 through a pin 9 22. The pressure plate 21 is fixedly connected to the base 2. The outside of the base 2 is fixedly installed with a side support plate 3 through a pin 10 23. The side support plate 3 is hinged to the base 2. The outside of the base 2 is provided with a jack connecting lug. By designing the side support plate 3 to the base 2 as a hinge, the side support plate 3 can be rotated 90°. When retracted, the support width is 830mm, and when extended, the support width is 1380mm. This facilitates transportation and installation, and can effectively enhance the overturning resistance and stability of the support.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, a side support jack 5 is fixedly installed on the outer side of the base 2. The output end of the side support jack 5 is fixedly connected to the column 4. A lifting sleeve 6 is fixedly installed on the upper end of the base 2 through pin 7 17. A lifting jack 7 is fixedly installed on the lifting sleeve 6 through pin 4 14. A pad 8 is fixedly installed on the output end of the lifting jack 7. A transverse jack 9 is fixedly installed on the outer side of the base 2. A pressure block 19 is fixedly installed on the transverse jack 9 through pin 8 18. The output end of the transverse jack 9 is fixedly installed to the lifting sleeve 6 through pin 5 15. A transverse guide rod 10 is fixedly installed on the output end of the transverse jack 9. The transverse guide rod 10 is fixedly installed to the lifting sleeve 6 through pin 6 16. The transverse guide rod 10 is fixedly connected to the base 2. The base 2, the top beam 1, and the side support plate 3 are all designed with transport holes and fixing holes. The design of transport holes and fixing holes facilitates safe loading and fixing.

[0030] The specific implementation process of this utility model is as follows: The top beam 1 is a box-shaped structure composed of four main ribs, transverse ribs, a top plate, and a web plate. The top plate is bent at the front and rear to prevent it from scraping the mesh. The top beam 1 is connected to the column 4 by pressure block 12. Anti-tipping device installation positions are reserved at the front and rear ends of the top beam 1. At the same time, lifting rings are set around the top beam 1 to facilitate overall hoisting during cyclical movement. The top beam 1 and the column 4 adopt a spherical fit and are connected by pin 11, pressure block 12, and pin 13. At the same time, lifting rings are set around the top beam 1 to facilitate overall hoisting during cyclical movement. The base 2 is the bottom support component of the hydraulic support. The base 2 is provided with an arc structure around its perimeter to facilitate the horizontal and vertical movement of the support. The front and rear ends of the base 2 are connected to the horizontal jack 9, the horizontal guide rod 10, the bottom lifting sleeve 6, the bottom lifting jack 7, and the pad 8 respectively through pins 4 14, 5 15, 6 16, 7 17, 8 18, and the pressure block 2 19.

[0031] By cooperating with the lifting device and the lateral movement device, the support can be lifted and moved laterally to the left and right. The side support plate 3 is connected to the base 2 via pin 4 23. The side support plate 3 can be rotated 90°. The column 4 and the top beam 1 adopt a spherical fit and are connected to the top beam 1 via pin 1 11, pressure block 12, and pin 2 13. The column 4 and the base 2 both adopt a spherical fit and are connected to the base 2 via pressure plate 21 and pin 3 22, and are fixed by clamp 20. The base 2 has an innovative side support plate 3 on both sides. When in use, it can be rotated 90° to open the support base plate, increasing the ground contact area. When transporting, it can be rotated 90° to retract the support base plate, reducing the overall width and facilitating transportation. The lifting device consists of lifting sleeve 6 and lifting jack 7 around the base 2. In conjunction with the lateral movement device consisting of lateral movement jack 9 and lateral movement guide rod 10 set at the front and rear of the base 2, the support can be lifted and moved laterally to the left and right.

[0032] The beneficial effects of this utility model are as follows: it omits the four-link structure and shield beam structure of traditional hydraulic supports, simplifying the support structure to the greatest extent and shortening the size of the hydraulic support. The column 4, top beam 1, and base 2 adopt a spherical fit, ensuring that the column 4, top beam 1, and base 2 have a good stress state. The top beam 1 and column 4 have sufficient deflection angle, adapting to all roadway cross-sectional shapes such as rectangular, arched, and trapezoidal, conforming to the usage habits of mine operators, and effectively withstanding mine pressure. The traditional step-by-step self-moving support type has been changed to a transport-type circulating support, avoiding repeated support of the roof, which is beneficial for maintaining roof stability and preventing premature roof breakage. Compared with ordinary single hydraulic props, the initial support pressure is increased from 12MPa to 31.5MPa, and the initial support force is increased from 90kN to 3090kN, with a roof support strength of up to 4.17MPa, effectively controlling roof subsidence and possessing strong support capabilities.

[0033] This innovative design incorporates a lifting and lateral movement device, addressing the shortcomings of current hydraulic supports for coal mine roadways. These supports lack self-movement capabilities, requiring assistance from individual props or manual hoists and winches to achieve support alignment or centering. This process is labor-intensive, cumbersome, inefficient, and poses significant safety hazards. The new design enables automatic support alignment and centering, improving the efficiency of unit support relocation and enhancing the safety factor of the installation. Simultaneously, it significantly reduces the weight of the hydraulic support, placing it at only 20% to 30% of the weight of traditional two-row roadway hydraulic supports. This substantial reduction in support relocation workload improves the working environment for employees and plays a crucial role in ensuring safe and efficient production. It provides robust equipment support for coal mine safety, aligns with the development trend of roadway hydraulic supports, and demonstrates significant advancements.

[0034] It should be noted in advance that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A transverse self-moving unit hydraulic support for coal mine roadway support, comprising a top beam, pin 1, pin 2, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, and pin 10, characterized in that: The top beam has a spherical structure that mates with the spherical surface on the column. A pressure block is fixedly mounted on the upper end of the column via a pin. The pressure block is fixedly mounted to the top beam via a pin. The lower spherical surface of the other end of the column mates with the spherical structure of the base. A pressure plate is fixedly mounted on the lower end of the column via a pin, and the pressure plate is fixedly connected to the base. A side support plate is fixedly mounted on the outer side of the base via a pin. A side support jack is fixedly mounted on the outer side of the base, and the output end of the side support jack is fixedly connected to the column. A lifting sleeve is fixedly installed at the upper end via pin seven. A lifting jack is fixedly installed on the lifting sleeve via pin four. A pad is fixedly installed at the output end of the lifting jack. A transverse jack is fixedly installed on the outer side of the base. A pressure block two is fixedly installed on the transverse jack via pin eight. The output end of the transverse jack is fixedly installed to the lifting sleeve via pin five. A transverse guide rod is fixedly installed at the output end of the transverse jack. The transverse guide rod is fixedly installed to the lifting sleeve via pin six. The transverse guide rod is fixedly connected to the base.

2. The transverse self-moving unit hydraulic support for coal mine roadway support according to claim 1, characterized in that: The top beam is a box-shaped structure consisting of four main reinforcement bars, transverse reinforcement bars, a top plate, and a web plate, with the top plate bent at the beginning and end.

3. The transverse self-moving unit hydraulic support for coal mine roadway support according to claim 1, characterized in that: The base has a rounded structure on all four sides.

4. The transverse self-moving unit hydraulic support for coal mine roadway support according to claim 1, characterized in that: The side support plate is hinged to the base, and a jack connecting lug is provided on the outer side of the base.

5. The transverse self-moving unit hydraulic support for coal mine roadway support according to claim 1, characterized in that: The base, top beam, and side support plates are all designed with transport holes and fixing holes.

6. The transverse self-moving unit hydraulic support for coal mine roadway support according to claim 1, characterized in that: The number of columns is two, and the columns are telescopic.

7. The transverse self-moving unit hydraulic support for coal mine roadway support according to claim 1, characterized in that: The outer side of the column is fixedly fitted with a clamp, which is fixedly connected to the base.

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