Hydraulic support with integral roof beam and single rear link

Abstract

The utility model discloses a kind of hydraulic support of integral roof beam combined single rear connecting rod, it is related to supporting field, including integral roof beam is integrally formed structure, it is hinged with the front end of cover beam, including the closed box type main body surrounded by roof beam top plate, roof beam main reinforcement and roof beam cover plate, the lower surface of roof beam top plate is fixed with roof beam main reinforcement along top plate length direction, roof beam cover plate that covers roof beam top plate is fixed between adjacent two roof beam main reinforcements, roof beam cover plate is flush with the lower edge of roof beam main reinforcement, the outside of the roof beam main reinforcement located in both sides is fixed with roof beam edge cover plate, at least one roof beam column cap is welded in the position corresponding to column between roof beam main reinforcement;The rear end of cover beam is hinged with the upper end of single rear connecting rod, single rear connecting rod is single root formula structure, is arranged in the center line position of support, the rear end of base is hinged with the lower end of single rear connecting rod;The middle part of cover beam is hinged with the upper end of front connecting rod, the middle part of base is hinged with the lower end of front connecting rod;Tail beam jack one end is hinged with tail beam, and the other end is hinged with cover beam.

Description

Technical Field

[0001] This utility model relates to the field of support, specifically a hydraulic support with an integral top beam and a single rear connecting rod. Background Technology

[0002] In fully mechanized coal mining faces, hydraulic supports are crucial equipment for ensuring roof safety and providing space for coal mining operations; their performance directly affects production efficiency and personnel safety. However, the traditional hydraulic supports widely used today have inherent defects in the design of the roof beam and rear connecting rod, making it difficult to meet the requirements of efficient and safe mining under complex geological conditions.

[0003] Regarding the roof slab, existing supports mostly use hinged roof beams, meaning the roof beam is formed by hinged connection of the front beam and the main beam via a pin. This presents the following significant problems: 1. The gaps at the hinges provide a channel for crushed rock fragments (such as mudstone and shale) from the broken roof to fall. Rock leakage into the working face not only easily causes injuries and damages equipment, but also leads to a dusty working environment and reduced visibility, seriously threatening safe production. Simultaneously, the accumulated rock in front of the supports hinders the normal operation of the coal mining machine and the movement of the scraper conveyor, directly affecting mining efficiency.

[0004] 2. As a weak point in the structure, the hinge point is prone to deformation or damage when subjected to uneven roof pressure, resulting in uneven distribution of support force, which may cause local roof collapse and low support reliability.

[0005] 3. The hinged structure contains a large number of connecting parts such as pins and lugs. These parts are prone to wear and breakage under harsh working conditions, resulting in a high failure rate and increased maintenance workload and cost.

[0006] Regarding the linkages, existing supports employ a double rear linkage design, using two parallel linkages to connect to the base and the shield beam or top beam. This design presents the following significant problems: 1. The two rear connecting rods and their connecting structures occupy a large amount of space at the rear of the support (on the goaf side), causing congestion in the longitudinal passage below the support and severely compressing the pedestrian passage and ventilation cross-section. This problem is particularly prominent in thin coal seams, causing great inconvenience to personnel passage, equipment layout (such as cables and water pipes), and ventilation and cooling of the working face.

[0007] 2. A double rear connecting rod design means more connecting rods, pins, and bearing housings, leading to more potential failure points and requiring higher manufacturing and assembly precision. In actual use, uneven stress on the two connecting rods can negatively impact overall stability and increase the complexity of maintenance and repair.

[0008] 3. When there are deviations in the manufacturing or installation of the double-link structure, it is difficult to guarantee the ideal load-sharing effect, which may generate additional internal forces and affect the load-bearing efficiency.

[0009] In summary, the existing articulated top beam and double rear linkage hydraulic support technologies are insufficient to meet the needs of modern high-yield and high-efficiency mines. Utility Model Content

[0010] In order to solve the above-mentioned technical problems, this utility model provides a hydraulic support with an integral top beam combined with a single rear connecting rod.

[0011] This utility model is achieved using the following technology: This utility model provides a hydraulic support with an integral top beam combined with a single rear link, including an integral top beam, a shield beam, a tail beam jack, a single rear link, a base, and a front link; The overall top beam is a one-piece molded structure, which is hinged to the front end of the shield beam. It includes a closed box-shaped main body surrounded by the top plate of the top beam, the main reinforcement of the top beam, and the top cover plate. The main reinforcement of the top beam is fixed on the lower surface of the top plate along the length of the top plate. The top cover plate covering the top plate is fixed between two adjacent main reinforcements. The top cover plate is flush with the lower edge of the main reinforcement of the top beam. The outer side of the main reinforcement of the top beam on both sides is fixed with the top side cover plate. At least one top beam column cap is welded between the main reinforcements of the top beam at the position corresponding to the column, for connection with the top of the hydraulic column. The rear end of the shield beam is hinged to the upper end of the single rear link. The single rear link is a single structure and is located at the center line of the support. The lower end of the single rear link is hinged to the rear end of the base. The middle part of the shield beam is hinged to the upper end of the front link, and the lower end of the front link is hinged to the middle part of the base. One end of the tail beam jack is hinged to the tail beam, and the other end is hinged to the shield beam, which is used to drive the tail beam to rotate around the hinge point.

[0012] During implementation, it includes the overall top beam, shield beam, tail beam jack, single rear connecting rod, base, and front connecting rod; The overall top beam is a one-piece molded structure, which is hinged to the front end of the shield beam. It includes a closed box-shaped main body surrounded by the top plate of the top beam, the main reinforcement of the top beam, and the top cover plate. The main reinforcement of the top beam is fixed on the lower surface of the top plate along the length of the top plate. The top cover plate covering the top plate is fixed between two adjacent main reinforcements. The top cover plate is flush with the lower edge of the main reinforcement of the top beam. The outer side of the main reinforcement of the top beam on both sides is fixed with the top side cover plate. At least one top beam column cap is welded between the main reinforcements of the top beam at the position corresponding to the column, for connection with the top of the hydraulic column. The rear end of the shield beam is hinged to the upper end of the single rear link. The single rear link is a single structure and is located at the center line of the support. The lower end of the single rear link is hinged to the rear end of the base. The middle part of the shield beam is hinged to the upper end of the front link, and the lower end of the front link is hinged to the middle part of the base. One end of the tail beam jack is hinged to the tail beam, and the other end is hinged to the shield beam, which is used to drive the tail beam to rotate around the hinge point.

[0013] Furthermore, it also includes an end plate fixed to the front end of the overall top beam; The front end of the lower surface of the top beam is equipped with a telescopic beam slide rail to guide the extension and retraction of the telescopic beam. The main beam is located below the telescopic beam slide rail and has a telescopic jack hinge lug welded on it for installing the telescopic jack that drives the telescopic beam.

[0014] Furthermore, the top beam column cap is welded to the top beam main reinforcement and / or the top beam top plate to enhance the local load-bearing strength.

[0015] Furthermore, the base includes two symmetrical base side plates, and two base stiffeners are arranged parallel to each other between the two base side plates, with the base stiffeners being parallel to the base side plates.

[0016] Furthermore, the lower end of the single rear link is clamped between two base stiffeners and passes through the two base stiffeners and the lower end of the rear link in sequence through the first pin, so that the rear link and the base form a rotatable connection; the lower end of the front link is clamped between the base side plate and the adjacent base stiffener and passes through the base side plate, the lower end of the front link and the base stiffener in sequence through the second pin, so that the front link and the base are stably hinged.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This utility model designs a hydraulic support system with an integral top beam combined with a single rear connecting rod. The integrated top beam eliminates the longitudinal gaps of hinged top beams, completely supporting the broken roof and fundamentally preventing the leakage of rock fragments into the working face through the beam gaps. It effectively prevents falling rocks from injuring personnel, ensuring the safety of workers and equipment below, while also effectively reducing dust, improving visibility in the working area, and improving the working environment. The integral top beam structure has high rigidity and strength, enabling it to evenly and stably transmit the supporting force of the columns to the entire roof area, avoiding uneven distribution of supporting force caused by deformation of the hinge points. It provides highly reliable support for broken and uneven roofs, effectively preventing local roof collapses and significantly improving the overall stability of the working face roof. Simultaneously, it effectively prevents rock leakage, avoiding interference from rock piles in front of the support on the coal cutting machine and the scraper conveyor's movement, ensuring the continuity and smoothness of coal mining operations, thereby directly maintaining and improving the overall mining efficiency of the working face.

[0018] By using an integrated top plate, the number of potential failure points is reduced, fundamentally avoiding failures caused by wear, deformation, or breakage of hinge components. This results in high reliability, long service life, and low maintenance costs.

[0019] This application releases a large amount of longitudinal space on the goaf side behind the support by using a single rear connecting rod. The pedestrian passage is wider and the ventilation cross section is more unobstructed compared to the existing technology. The larger ventilation cross section is conducive to ventilation and cooling of the working face, improves the overall working environment underground, and greatly facilitates the safe passage of personnel, equipment inspection and pipeline laying. In particular, it solves the problem of efficient mining of thin coal seam working faces.

[0020] Moreover, compared to the double rear linkage, the single rear linkage structure has a significantly reduced number of parts, fewer processing steps, and higher overall reliability. It avoids the problem of uneven stress distribution in the double linkage and has better load-bearing stability and torsional performance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this application.

[0022] Figure 2 This is a structural schematic diagram of the overall top beam.

[0023] Figure 3 This is a structural diagram of the base.

[0024] In the diagram: 1. Overall top beam; 101. Main reinforcement of top beam; 102. Top beam cover plate; 103. Top beam column cap; 104. Top beam side cover plate; 105. Telescopic beam slide rail; 106. Telescopic jack hinge lug; 107. End plate; 108. Top beam top plate; 2. Protective beam; 3. Tail beam jack; 4. Single rear connecting rod; 5. Base; 6. Front connecting rod. Detailed Implementation

[0025] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] A hydraulic support system with an integral top beam and a single rear linkage, such as Figures 1-3 As shown, it includes an integral top beam 1, a protective beam 2, a tail beam jack 3, a single rear connecting rod 4, a base 5, and a front connecting rod 6; The integral top beam 1 is a one-piece molded structure, hinged to the front end of the shield beam 2. It includes a closed box-shaped main body surrounded by the top beam top plate 108, the main reinforcement bars 101, and the top beam cover plate 102. The box-shaped structure can significantly improve the overall rigidity and bending strength of the top beam, ensuring uniform distribution of the top plate pressure. The main reinforcement bars 101 are fixed along the length of the top plate on the lower surface of the top beam top plate 108, serving as the main load-bearing skeleton and effectively transferring the top plate pressure downward to the columns. The top beam cover plate 102, which covers the top beam top plate 108, is fixed between two adjacent main reinforcement bars 101. The top beam cover plate 102 and the main reinforcement bars 101 are connected. The bottom edge of 01 is flush with the main reinforcement. The top beam cover plate 102 and the main reinforcement together form a closed box, which provides a flat mounting base for the internal equipment. The outer sides of the main reinforcement 101 of the top beam on both sides are fixed with top beam side cover plates 104 to form effective side guards to prevent broken top plate gangue from leaking into the working space from both sides of the support. At least one top beam column cap 103 is welded between the main reinforcement 101 of the top beam at the position corresponding to the column, which is used to connect with the top of the hydraulic column and serve as the support of the column. The top beam column cap 103 is welded to the main reinforcement 101 of the top beam and / or the top plate 108 of the top beam to enhance the local bearing strength.

[0027] The rear end of the protective beam 2 is hinged to the upper end of the single rear link 4. The single rear link 4 is a single structure and is arranged at the center line of the support. The single central arrangement creates an open longitudinal space at the rear of the support, which greatly improves the ventilation effect and the passage of pedestrians. The lower end of the single rear link 4 is hinged to the rear end of the base 5. The middle part of the protective beam 2 is hinged to the upper end of the front connecting rod 6, and the lower end of the front connecting rod 6 is hinged to the middle part of the base 5. Specifically, the base 5 includes two symmetrical base 5 side plates, and two base 5 stiffening plates are arranged parallel to each other between the two base 5 side plates. The lower end of the single rear connecting rod 4 is clamped between the two base 5 stiffening plates, and passes through the two base 5 stiffening plates and the lower end of the rear connecting rod in sequence through a first pin, so that the rear connecting rod and the base 5 form a rotatable connection; the lower end of the front connecting rod 6 is clamped between the base 5 side plate and the adjacent base 5 stiffening plate, and passes through the base 5 side plate, the lower end of the front connecting rod 6 and the base 5 stiffening plate in sequence through a second pin, so that the front connecting rod 6 and the base 5 are stably hinged.

[0028] One end of the tail beam jack 3 is hinged to the tail beam, and the other end is hinged to the shield beam 2, which is used to drive the tail beam to rotate around the hinge point.

[0029] It also includes an end plate 107 fixed to the front end of the overall top beam 1; The lower surface of the top plate 108 of the top beam is provided with a telescopic beam slide rail 105, which is used to guide the extension and retraction of the telescopic beam; the overall top beam 1 is located below the telescopic beam slide rail 105 and has a telescopic jack hinge lug 106 for installing the telescopic jack that drives the telescopic beam.

[0030] The scope of protection claimed by this utility model is not limited to the specific embodiments described above. Moreover, for those skilled in the art, this utility model can have various modifications and alterations. Any modifications, improvements, and equivalent substitutions made within the concept and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydraulic support with an integral top beam and a single rear connecting rod, characterized in that, It includes an integral top beam (1), a protective beam (2), a tail beam jack (3), a single rear connecting rod (4), a base (5), and a front connecting rod (6); The integral top beam (1) is an integrally formed structure, which is hinged to the front end of the shield beam (2). It includes a closed box-shaped main body surrounded by a top beam plate (108), a top beam main reinforcement (101) and a top beam cover plate (102). The bottom surface of the top beam plate (108) is fixed with a top beam main reinforcement (101) along the length of the top plate. A top beam cover plate (102) covering the top beam plate (108) is fixed between two adjacent top beam main reinforcements (101). The top beam cover plate (102) is flush with the lower edge of the top beam main reinforcement (101). Top beam side cover plates (104) are fixed on the outer side of the top beam main reinforcements (101) on both sides. At least one top beam column cap (103) is welded between the top beam main reinforcements (101) at the position corresponding to the column, for connection with the top of the hydraulic column. The rear end of the shield beam (2) is hinged to the upper end of the single rear connecting rod (4). The single rear connecting rod (4) is a single structure and is arranged at the center line of the support. The lower end of the single rear connecting rod (4) is hinged to the rear end of the base (5). The middle part of the shield beam (2) is hinged to the upper end of the front connecting rod (6), and the lower end of the front connecting rod (6) is hinged to the middle part of the base (5). One end of the tail beam jack (3) is hinged to the tail beam, and the other end is hinged to the shield beam (2), which is used to drive the tail beam to rotate around the hinge point.

2. The hydraulic support with an integral top beam and a single rear connecting rod according to claim 1, characterized in that: It also includes an end plate (107) fixed to the front end of the overall top beam (1); The lower surface of the top plate (108) of the top beam is provided with a telescopic beam slide rail (105) for guiding the extension and retraction of the telescopic beam. The integral top beam (1) is located below the telescopic beam slide rail (105) and has a telescopic jack hinge lug (106) welded on it for installing the telescopic jack that drives the telescopic beam.

3. The hydraulic support with an integral top beam and a single rear connecting rod according to claim 1, characterized in that: The top beam column cap (103) is welded to the top beam main reinforcement (101) and / or the top beam top plate (108) to enhance the local load-bearing strength.

4. A hydraulic support with an integral top beam and a single rear connecting rod according to claim 1, characterized in that: The base (5) includes two symmetrical base (5) side plates, and two base (5) stiffeners are arranged parallel between the two base (5) side plates, and the base (5) stiffeners are parallel to the base (5) side plates.

5. A hydraulic support with an integral top beam and a single rear connecting rod according to claim 4, characterized in that: The lower end of the single rear connecting rod (4) is clamped between the two base (5) stiffener plates, and passes through the two base (5) stiffener plates and the lower end of the rear connecting rod in sequence through the first pin, so that the rear connecting rod and the base (5) form a rotatable connection.

6. A hydraulic support with an integral top beam and a single rear connecting rod according to claim 4, characterized in that: The lower end of the front connecting rod (6) is clamped between the side plate of the base (5) and the adjacent stiffening plate of the base (5), and passes through the side plate of the base (5), the lower end of the front connecting rod (6) and the stiffening plate of the base (5) in sequence through the second pin, so that the front connecting rod (6) and the base (5) are stably hinged.

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