Anti-torsion light flexible hydraulic support dustproof device

Abstract

The utility model belongs to the technical field of coal mine hydraulic support dust prevention, and relates to an anti-torsion light flexible hydraulic support dust prevention device which is arranged between two shield beam side protection plates and comprises a sliding rail assembly fixedly connected with the left shield beam side protection plate and the right shield beam side protection plate through hanging assemblies. The dust receiving and guiding assembly is arranged below the sliding rail assembly and connected with the sliding rail assembly, and the sealing assembly is arranged on the inner side of the sliding rail assembly and attached to the left shield beam side protection plate and the right shield beam side protection plate. The dust receiving and guiding assembly comprises a rubber sheet and a plurality of clamping plates arranged on the rubber sheet, and the rubber sheet and the hanging assembly form a U shape with an upward opening. Dust is ensured to be effectively guided into a goaf instead of being scattered on the left and right front connecting rods, the manual cleaning requirement is reduced, and the maintenance cost and the working intensity are remarkably reduced; the sealing assembly is tightly attached to the left shield beam side guard plate and the right shield beam side guard plate, dust is effectively prevented from escaping, the working environment of the downwind side is improved, and the health of workers is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust prevention of coal mine hydraulic supports and relates to a torsion-resistant lightweight flexible hydraulic support dust prevention device. Background Art

[0002] As an indispensable key equipment in the fully mechanized mining face, the main function of the hydraulic support is to control the mine pressure and ensure the safety and efficiency of coal mining operations. It provides a stable working space for operators and equipment by supporting the roof and isolating the goaf, and has the ability to push the mining and transportation equipment on the working face. The core components of the hydraulic support include the base, the connecting rod system (front and rear), the column, the top beam, the side guard plate, the shield beam and various types of jacks, which work together to achieve their design purpose.

[0003] However, in actual use, hydraulic supports will cause a series of problems during the column lowering and frame moving operation, especially dust pollution. When the coal and rock above are broken by the mine pressure and the force of the support itself, a large amount of dust will be generated. In addition, the contraction and vibration of the support during the column lowering and frame moving process will cause dust to escape from the gap between the side guard plates, seriously affecting the working environment on the leeward side. This dust generation is usually linear and paroxysmal, limited to the support action stage, and then gradually decreases to disappear.

[0004] At present, the measures to deal with the dust generation problem of hydraulic support column lowering and frame moving mainly include spray dust reduction, dust removal by negative pressure induction device between frames, and dust reduction by support dust prevention device. Among them, spray dust reduction is not widely used because it may worsen the working environment and cause inconveniences, such as wetting the workers' clothes. Although the negative pressure induction device between frames attempts to use the negative pressure generated by the spray to suck the dust into the device for sedimentation, it also faces application limitations due to the high pressure required for the spray, the small amount of induced air, and the limited effect on large particles of dust. In contrast, the dust prevention device of the hydraulic support physically closes the gaps between the supports and guides the dust into the goaf, becoming a more common choice.

[0005] In the prior art, commonly used bracket dust-proof devices mostly use a combination of rubber and steel slides to seal the gaps between adjacent brackets. However, this solution has obvious defects: when adjacent hydraulic brackets move, the step distance generated causes the slide to deflect, and dust accumulates on the left and right front connecting rods, which requires manual regular cleaning, adding extra workload. In addition, some dust can still spread with the wind and continue to pollute the downwind environment. In addition, this type of dust-proof device itself is heavy (about 100kg), which brings great inconvenience to the transportation, installation and disassembly between brackets, prolongs the installation period, and reduces work efficiency. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a torsion-resistant lightweight flexible hydraulic support dust prevention device to overcome the limitations of the prior art, effectively control dust pollution in the process of lowering columns and moving frames, while simplifying the installation process and reducing the maintenance burden, thereby significantly improving the operational safety and efficiency of the comprehensive mining working face.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a torsion-resistant lightweight flexible hydraulic support dust-proof device, arranged between two shielding beam side guard plates, including a slide rail assembly respectively connected and fixed to the left shielding beam side guard plate and the right shielding beam side guard plate through a suspension assembly, a dust-collecting and dust-guiding assembly arranged below the slide rail assembly and connected to the slide rail assembly, and a sealing assembly arranged on the inner side of the slide rail assembly and fitted with the left shielding beam side guard plate and the right shielding beam side guard plate; the dust-collecting and dust-guiding assembly includes a rubber, and a plurality of plywood arranged on the rubber, and the rubber and the suspension assembly form a U-shape with an opening upward.

[0008] Optionally, the suspension assembly includes a hook respectively welded to the left shield beam side guard plate and the right shield beam side guard plate, a D-shaped buckle for connecting to the slide rail assembly, and an iron chain arranged between the hook and the D-shaped buckle.

[0009] Optionally, three groups of suspension components are arranged along the length direction of the left guard beam side guard plate and the right guard beam side guard plate.

[0010] Optionally, the slide rail assembly includes a slide rail, a hanging device arranged on the top of the slide rail and connected to the suspension assembly and a sealing plate mounting ear connected to the sealing assembly, as well as a plurality of pulleys slidably arranged in the slide rail, and end covers for limiting position are arranged at both ends of the slide rail; a splint II and a splint I are connected to the bottom of the pulley, and the splint I is connected to the dust collecting and guiding assembly.

[0011] Optionally, a group of slide rail assemblies are symmetrically arranged on the side guard plate of the left guard beam and the side guard plate of the right guard beam.

[0012] Optionally, the dust collecting and guiding assembly includes a splint V connected to the splint I through a connecting plate, and a splint III and a splint IV arranged below the splint V; the splint V is also connected to a splint VI symmetrically arranged with respect to the rubber, and two groups of splints V and VI are arranged, and are symmetrically arranged below the slide rail assembly, two symmetrical groups of splint III are arranged, and splint IV is arranged at the bottom of the U-shaped rubber.

[0013] Optionally, the splint III is arranged 250 mm downward from the top of the rubber, and the splint IV is arranged 500 mm downward from the top of the rubber.

[0014] Optionally, chain links are welded at corresponding positions on the splint I and the splint V, and D-shaped buckles are provided between the chain links for connection.

[0015] Optionally, the dust receiving and guiding assembly includes a seal I and a seal II. The seal I and the seal II are fixed to the side of the slide rail assembly through the sealing plate mounting ears. After installation, they are respectively tightly attached to the left shielding beam side guard plate and the right shielding beam side guard plate, so that the fallen dust can be guided into the dust receiving and guiding assembly when the bracket is moved; the seal I is set to an irregular shape toward the top beam, and the protruding part covers the hinge between the shielding beam and the top beam, and the seal II covers the shielding beam.

[0016] The beneficial effects of the utility model are:

[0017] 1) The innovative design of the dust collecting and guiding components of the utility model ensures that the dust is effectively introduced into the goaf instead of being scattered on the left and right front connecting rods, which reduces the need for manual cleaning and significantly reduces maintenance costs and work intensity; the sealing components fit tightly with the left and right side guard plates of the shield beams, effectively preventing dust from escaping, improving the working environment on the downwind side and protecting the health of workers;

[0018] 2) The utility model removes the rigid slide and adopts a flexible rubber and pulley system, so that the device can flexibly adapt to the action of lowering the column and moving the frame, avoiding the deflection caused by the forward movement of the bracket and maintaining the stability of the dustproof device; the main material adopts lightweight rubber, which greatly reduces the overall weight and is easy to transport and install;

[0019] 3) The connection mechanism of the utility model adopts a D-type buckle, which simplifies the installation and disassembly process. Compared with traditional devices, the installation period can be shortened by more than three quarters, thereby improving work efficiency; the modular design facilitates on-site adjustment and replacement, reducing long-term operating costs.

[0020] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 for Figure 1 A cross-sectional view of

[0024] Figure 3 It is a schematic diagram of the slide rail assembly of the utility model;

[0025] Figure 4 for Figure 3 A cross-sectional view of

[0026] Figure 5 This is a schematic diagram of the installation of the utility model;

[0027] Figure 6 This is a schematic diagram of the hydraulic support of the utility model.

[0028] Figure numerals: slide rail assembly 1, slide rail 11, end cover 12, pulley 13, splint I 14, splint II 15, hanging device 16, sealing plate mounting ear 17, suspension assembly 2, hook 21, iron chain 22, D-shaped buckle 23, dust collecting and guiding assembly 3, rubber 31, splint III 32, splint IV 33, splint V 34, splint VI 35, connecting plate 36, sealing assembly 4, seal I 41, seal II 42, left shielding beam side guard plate 5, right shielding beam side guard plate 6, shielding beam 7, top beam 8, column 9. DETAILED DESCRIPTION

[0029] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0030] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0031] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] See also Figure 1 to Figure 6, is a torsion-resistant lightweight flexible hydraulic support dust-proof device, which is arranged between two shield beam 7 side guard plates, including a slide rail assembly 1 connected and fixed to the left shield beam side guard plate 5 and the right shield beam side guard plate 6 through a suspension assembly 2, a dust receiving and guiding assembly 3 arranged below the slide rail assembly 1 and connected to the slide rail assembly 1, and a sealing assembly 4 arranged on the inner side of the slide rail assembly 1 and fitted with the left shield beam side guard plate 5 and the right shield beam side guard plate 6; the dust receiving and guiding assembly 3 includes a rubber 31 and a plurality of plywood arranged on the rubber 31, and the rubber 31 and the suspension assembly are connected to each other. The component 2 forms a U-shape with an opening upward, and the suspension component 2 includes a hook 21 welded to the left shield beam side guard plate 5 and the right shield beam side guard plate 6, respectively, a D-shaped buckle 23 for connecting with the slide rail component 1, and an iron chain 22 arranged between the hook 21 and the D-shaped buckle 23. The length of the iron chain 22 is adjustable, and the height of the dust collecting device can be adjusted. The suspension component 2 is arranged with 3 groups of 6 hooks 21 along the length direction of the left shield beam side guard plate 5 and the right shield beam side guard plate 6 to provide a suspension point for the hydraulic support dust prevention device; when the hydraulic support dust prevention device moves with the support, The iron chain 22 of the suspension assembly 2 will move forward with the slide rail 11, from a vertical downward state to a state vertical to the edge of the side guard plate, providing a travel for the dustproof device of the partial hydraulic support to move forward; the slide rail assembly 1 includes the slide rail 11, a hanging device 16 arranged on the top of the slide rail 11 and connected to the suspension assembly 2 and a sealing plate mounting ear 17 connected to the sealing assembly 4, and a plurality of pulleys 13 slidably arranged in the slide rail 11, and end caps 12 for limiting position are arranged at both ends of the slide rail 11 to prevent the pulley 13 from sliding out of the slide rail 11; the bottom of the pulley 13 is connected with a clamping plate II 15 and a clamping plate I 14, the clamping plate I14 is connected to the dust receiving and guiding assembly 3, and the slide rail assembly 1 is symmetrically arranged with a group on the left shield beam side guard plate 5 and the right shield beam side guard plate 6, respectively. The dust receiving and guiding assembly 3 includes a clamping plate V34 connected to the clamping plate I14 through a connecting plate, and a clamping plate III32 and a clamping plate IV33 arranged below the clamping plate V34. The connecting plate is arranged in 4 groups along the length direction of the clamping plate I14 and the clamping plate V34, and the clamping plate I14 and the clamping plate V34 are assembled into one body to ensure that the rubber 31 does not deflect in the vertical direction of the clamping plate during the movement of the hydraulic support dust prevention device;The splint V34 is also connected to the splint VI35 symmetrically arranged about the rubber 31. The splint V34 and the splint VI35 are arranged in two groups and are symmetrically arranged below the slide rail assembly 1, and the function is to provide a hanging point for the rubber 31. The splint III32 is arranged in two symmetrical groups, and the splint IV33 is arranged at the bottom of the U-shaped rubber 31. The function of arranging multiple splints is to increase the rigidity of the rubber 31 in the length direction to ensure that the dust receiving and dust guiding assembly 3 does not twist during the sliding process. The splint III32 is arranged 250 mm downward from the top of the rubber 31, and the splint IV33 is arranged 500 mm downward from the top of the rubber 31. The splint I14 and the splint V34 are also Chain links are welded at corresponding positions, and D-shaped buckles are arranged between the chain links for connection. The D-shaped buckles are connected to the slide rail assembly 1, so that the rubber 31 is easy to install and disassemble. The dust receiving and guiding assembly 3 includes a seal Ⅰ41 and a seal Ⅱ42. The seal Ⅰ41 and the seal Ⅱ42 are fixed to the side of the slide rail assembly 1 through the sealing plate mounting ear 17. After installation, they are respectively tightly attached to the left shielding beam side guard plate 5 and the right shielding beam side guard plate 6, so that the dust falling is guided into the dust receiving and guiding assembly 3 when the bracket is moved; the seal Ⅰ41 is set to an irregular shape toward the top beam 8, and the protruding part covers the hinge between the shielding beam 7 and the top beam 8, and the seal Ⅱ42 covers the shielding beam 7. ;

[0033] In this embodiment, the black rubber 31 is surface treated and the surface is changed from black to light color by lamination, which effectively alleviates the feeling of oppression during underground operations.

[0034] The action process of the hydraulic support dust prevention device is as follows: when the support column is lowered and the frame is moved, the support column 9 on one side descends and moves forward. For example, when the left support descends and moves forward, as the left column 9 descends and moves forward, the curling width of the rubber 31 on the left side of the hydraulic support dust prevention device decreases, and the width of the rubber 31 on the right side increases, and the pulley 13 on the right side moves along the slide rail 11 toward the support moving direction. At the same time, the iron chain 22 in the right suspension assembly 2 changes from a vertical downward state to a state vertical to the edge of the side guard plate. Through the cooperation of the three, the step distance of the shifting frame generated by the coal mining machine drum cutting depth when the hydraulic support is moved is offset. After the right support descends and moves forward, the hydraulic support dust prevention device returns to its initial state.

[0035] Due to the removal of the rigid slide groove in the dust-proof device of the hydraulic support, the rubber 31 can be rubbed back and forth during the column lowering and frame moving process. At the same time, the pulley 13 moves along the slide rail 11. The two work together to offset the deflection of the two sides of the dust-collecting device caused by the forward pulling of the bracket, so that the dust-proof device of the hydraulic support can always be kept between the two adjacent brackets. And through the back and forth rubbing of the rubber 31, the dust in the dust-collecting and dust-guiding assembly 3 can fall smoothly and enter the frame, avoiding the situation of being introduced into the left and right front connecting rods. At the same time, the main body of the dust-collecting and dust-guiding assembly 3 adopts the rubber 31, and the thickness is reduced, which greatly reduces the weight of the dust-proof device of the hydraulic support, and the D-shaped buckle is used for connection, which is convenient for installation and disassembly, and the installation period can be shortened by more than three quarters.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A torsion-resistant lightweight flexible hydraulic support dust-proof device, arranged between two shield beam side guard plates, characterized in that: It includes a slide rail assembly connected and fixed to the left shield beam side guard plate and the right shield beam side guard plate through a suspension assembly, a dust receiving and guiding assembly arranged below the slide rail assembly and connected to the slide rail assembly, and a sealing assembly arranged inside the slide rail assembly and in contact with the left shield beam side guard plate and the right shield beam side guard plate; The dust receiving and guiding component comprises a rubber and a plurality of clamping plates arranged on the rubber. The rubber and the suspension component form a U-shape with an opening facing upward.

2. The anti-torsion lightweight flexible hydraulic support dust-proof device according to claim 1 is characterized by: The suspension assembly comprises a hook respectively welded with the left shield beam side guard plate and the right shield beam side guard plate, a D-shaped buckle used for connecting with the slide rail assembly, and an iron chain arranged between the hook and the D-shaped buckle.

3. The anti-torsion lightweight flexible hydraulic support dust-proof device according to claim 2 is characterized by: There are three groups of suspension components arranged along the length direction of the left shield beam side guard plate and the right shield beam side guard plate.

4. The anti-torsion lightweight flexible hydraulic support dust-proof device according to claim 1 is characterized by: The slide rail assembly comprises a slide rail, a hanging device arranged on the top of the slide rail and connected to the hanging assembly respectively, a sealing plate mounting ear connected to the sealing assembly, and a plurality of pulleys slidably arranged in the slide rail, and end caps for limiting position are arranged at both ends of the slide rail; A clamping plate II and a clamping plate I are connected to the bottom of the pulley, and the clamping plate I is connected to the dust receiving and guiding component.

5. The anti-torsion lightweight flexible hydraulic support dust-proof device according to claim 4 is characterized by: A group of slide rail components are symmetrically arranged on the side of the left shield beam side guard plate and the side of the right shield beam side guard plate.

6. The anti-torsion lightweight flexible hydraulic support dustproof device according to claim 4 is characterized by: The dust receiving and guiding assembly includes a clamping plate V connected to the clamping plate I through a connecting plate, and clamping plates III and IV arranged below the clamping plate V; The splint V is also connected to the splint VI symmetrically arranged about the rubber. There are two groups of splints V and VI, and they are symmetrically arranged below the slide rail assembly. Two groups of splints III are symmetrically arranged, and splint IV is arranged at the bottom of the U-shaped rubber.

7. The anti-torsion lightweight flexible hydraulic support dust-proof device according to claim 6 is characterized by: The splint III is set at 250 mm below the top of the rubber, and the splint IV is set at 500 mm below the top of the rubber.

8. The anti-torsion lightweight flexible hydraulic support dust-proof device according to claim 6 is characterized by: Chain links are welded at corresponding positions on the clamping plate I and the clamping plate V, and D-shaped buckles for connection are arranged between the chain links.

9. The anti-torsion lightweight flexible hydraulic support dust-proof device according to claim 4 is characterized by: The dust receiving and guiding assembly includes seal I and seal II. Seal I and seal II are fixed to the side of the slide rail assembly through sealing plate mounting ears. After installation, they are respectively tightly attached to the left shielding beam side guard plate and the right shielding beam side guard plate, so that the fallen dust can be guided into the dust receiving and guiding assembly when the bracket is moved; seal I faces the top beam, and the protruding part covers the hinge between the shielding beam and the top beam, and seal II covers the shielding beam.

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