End tail support for supporting broken roof and narrow-space roadway

Abstract

The utility model provides an end tail support for supporting a broken roof and a narrow-space roadway, which comprises two groups of hydraulic supports arranged left and right, the two groups of hydraulic supports mutually push and move through a pushing jack, and each hydraulic support comprises a base, a top beam, a front upright post and a rear upright post, pushing jack bases are arranged at the positions, between the front stand columns and the rear stand columns, of the upper surface of the base, the pushing jack bases on the two sets of hydraulic supports are arranged in a front-back staggered mode, and lug plates facing the other set of hydraulic supports are arranged on the side faces of the pushing jack bases. The two ends of the pushing jack are installed on the two lug plates respectively. The left hydraulic support and the right hydraulic support are mutually pushed to move, safe support moving can be achieved on the premise that a roadway top plate is effectively supported, the jack is pushed to avoid occupying the space of the transverse width, and the hydraulic support is suitable for a trapezoidal section end tail area with the narrow space.

Description

Technical Field

[0001] This utility model relates to a hydraulic support structure, specifically, to an end support for supporting a narrow roadway with a broken roof. Background Technology

[0002] Shanxi Province's coking coal is a rare high-quality coking coal in China. Due to its shallow burial depth, it was severely damaged by small coal mines in the 1980s. Since Shanxi Province launched the coal resource integration work, small mines in various places have been integrated into large mines. The large mines have re-mined the coal seams that were damaged by the small coal mines, which is called re-mining.

[0003] In re-mining operations, the coal seam is typically quite fractured, and the two roadways at the working face have trapezoidal cross-sections. Since it's impossible to reinforce the roadways with anchor bolts or cables, the roadway cross-sections are generally small, typically 3100-3300mm wide at the top and 3800-4000mm wide at the bottom. The roadways are reinforced with wire mesh and trapezoidal steel canopies. Due to the small roadway cross-sections, after the working face supports are installed at the head and tail of the mining machine, the remaining space is narrow, making it difficult to install the end supports.

[0004] Currently, the end-end supports involved in existing patents are single-row front-rear frame type. These supports are narrow and can be placed in confined end-end areas. However, due to their structural limitations, when moving the supports, the rear frame supports the roof, the front frame lowers, and a jack extends to push the front frame forward. Then, the front frame supports the roof, the rear frame lowers, and the jack retracts to pull the rear frame forward. This method of moving supports inevitably results in the loss of roof support during the process. The trapezoidal steel sheds originally used to fix the roadway within the support area become loose as the supports move, causing the roadway roof to sag and fall, leading to roadway instability.

[0005] Therefore, in the re-mining face, the coal seam is broken and the roadway excavation cross-section is small. There is currently no hydraulic support that can effectively support and safely move the support in the narrow trapezoidal cross-section end area.

[0006] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0007] The purpose of this utility model is to address the shortcomings of existing technologies by providing an end-end support for supporting broken roofs and narrow roadways. The support is moved by pushing and shifting the support between two sets of hydraulic supports on the left and right sides. It is suitable for narrow trapezoidal cross-section end-end areas and can be safely moved while effectively supporting the roadway roof.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes two sets of hydraulic supports arranged on the left and right sides. The two sets of hydraulic supports are moved by pushing each other with a pushing jack. The hydraulic support includes a base, a top beam, a front column and a rear column. The upper surface of the base is provided with a pushing jack base between the front column and the rear column. The pushing jack bases on the two sets of hydraulic supports are staggered one in front and one behind. The side of the pushing jack base is provided with a lug facing the other set of hydraulic supports. The two ends of the pushing jack are respectively installed on the two lugs.

[0009] Based on the above, a front connecting frame jack and a rear connecting frame jack are connected between the two bases of the two sets of hydraulic supports to tighten the two bases together.

[0010] Based on the above, the base is provided with a front support and a rear support respectively on the front side of the front column and the rear side of the rear column. The two ends of the front connecting frame jack are installed on the two front supports, and the two ends of the rear connecting frame jack are installed on the two rear supports.

[0011] Based on the above, a front connecting jack and a rear connecting jack are connected between the two top beams of the two sets of hydraulic supports to tighten the two top beams together.

[0012] Based on the above, the top beam is provided with a front support and a rear support on the front and rear sides between the front column and the rear column, respectively. The two ends of the front connecting frame jack of the top beam are installed on the two front supports of the top beam, and the two ends of the rear connecting frame jack of the top beam are installed on the two rear supports of the top beam.

[0013] Based on the above, the sides of the two bases facing the other base are all provided as base abutment side plates so that the two bases can abut against each other.

[0014] Based on the above, the sides of the two top beams facing the other top beam are all provided as top beam abutment side plates so that the two top beams can abut against each other.

[0015] Based on the above, a flip-up side panel or a detachable side panel is installed on the side of each of the two top beams away from the other top beam. Both the flip-up side panel and the detachable side panel can be installed on the side of the two top beams.

[0016] Based on the above, the front end of the base and the front end of the top beam are connected by a swing arm, which uses a double-link structure.

[0017] Based on the above, the rear end of the base and the rear end of the top beam are provided with a linkage mechanism and a protective beam.

[0018] This utility model has substantial features and progress compared to the prior art. Specifically, the two sets of hydraulic supports arranged on the left and right sides of the end support of this application move forward alternately as fulcrums, which can safely move the support while effectively supporting the roof of the roadway. The pushing jack is set directly above the gap between the bases of the two sets of hydraulic supports and in the area between the front and rear columns, so as to avoid the pushing jack occupying the lateral width space of the end support of this application, reduce the overall width of the end support of this application, and can be applied to the narrow trapezoidal cross-section end area.

[0019] Meanwhile, the front connecting frame jack, the base rear connecting frame jack, the top beam front connecting frame jack, and the top beam rear connecting frame jack connect the two hydraulic supports into a whole, so that the two hydraulic supports always keep each other in a tight state; the flip-up side panel and the detachable side panel can adapt to the need for interchange of the left and right working faces; the swing rod, the linkage mechanism and the shield beam can reduce the sway of the hydraulic support and improve the stability of the hydraulic support. Attached Figure Description

[0020] Figure 1 This is a three-dimensional perspective schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a frontal view of the overall structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the overall structure of this utility model from the left view angle;

[0023] Figure 4 This is a top view of the base of this utility model;

[0024] Figure 5 This is a schematic diagram of the top beam of this utility model from a bottom view angle;

[0025] In the figure, the attached reference numerals are:

[0026] Hydraulic support 100, pushing jack 1, base 2, front connecting frame jack 21, base rear connecting frame jack 22, base front support 23, base rear support 24, base abutting side plate 25; top beam 3, top beam front connecting frame jack 31, top beam rear connecting frame jack 32, top beam front support 33, top beam rear support 34, top beam abutting side plate 35, flip-up side panel 36, detachable side panel 37, front column 4, rear column 5, pushing jack base 6, ear plate 7, swing rod 8, protective beam 9. Detailed Implementation

[0027] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0028] Example 1

[0029] like Figures 1-5 As shown, the end-end support for supporting a broken roof and a narrow roadway in this embodiment includes two sets of hydraulic supports 100 arranged on the left and right sides. The two sets of hydraulic supports 100 are moved between each other by pushing jacks 1. The end-end support of this application adopts a "two supports per set, stepping left and right" structure, with one set of hydraulic supports 100 on the left and the other set of hydraulic supports 100 on the right. Each set of hydraulic supports 100 includes components such as a base 2, a top beam 3, a front column 4, and a rear column 5. That is, each set of hydraulic supports 100 adopts a front and rear double column form, and the two sets of hydraulic supports form a four-column form, which is beneficial to the overall structural stability of the end-end support of this application.

[0030] Specifically, the two ends of the push jack 1 are installed on the base 2 of the two sets of hydraulic supports 100. The push jack 1 points in the front and back direction. When the two sets of hydraulic supports 100 are aligned, the push jack 1 is in the retracted state. When the push jack 1 is extended, it can push one of the sets of hydraulic supports 100 forward.

[0031] The process of moving the support frame: Two sets of hydraulic supports 100 are aligned, with one set in a supported state (i.e., the front column 4 and rear column 5 are extended, effectively supporting the top beam 3 on the roof), and the other set of hydraulic supports 100 is lowered (i.e., the front column 4 and rear column 5 are retracted). The extension of the push jack 1 pushes the lowered set of hydraulic supports 100 forward. Then, the front hydraulic support 100 is raised, and the rear hydraulic support 100 is lowered. The retraction of the push jack 1 pulls the rear hydraulic support 100 forward. Through this "left push, right pull" or "right push, left pull" moving method, the two sets of hydraulic supports 100 alternately move forward, acting as fulcrums for each other, completing the overall movement of the end-end support frame of this application. In this way, hydraulic supports 100 always support the roof in the support area, and the steel canopy in the trapezoidal cross-section end-end area is always in a state of taut support for the roadway, reducing the amount of roadway deformation.

[0032] The above structure relies on the pushing jack 1 to realize the function of the two sets of hydraulic supports 100 pushing and moving each other. However, in order to effectively support the narrow trapezoidal cross-section end area, it is necessary to reduce the overall width of the end support of this application.

[0033] To achieve the above objectives, the jack 1 is installed on the upper surface of the base 2. Specifically, a jack base 6 is provided on the upper surface of the base 2 between the front column 4 and the rear column 5. The jack 1 is installed between the two jack bases 6, so that the front column 4, the jack 1, and the rear column 5 form a front-middle-rear structure, preventing interference and other mutual influences among the three, and avoiding excessive lateral space occupation. For example, if the jack 1 is installed between the two front columns 4, or in the gap between the two bases 2, it will result in excessive lateral space occupation and make it impossible to ensure a reduction in the overall width of the end bracket of this application. In this embodiment, the push jack bases 6 on the two sets of hydraulic supports 100 are staggered one in front and one behind. That is, the push jack base 6 on one set of hydraulic supports 100 is close to the front column 4, and the push jack base 6 on the other set of hydraulic supports 100 is close to the rear column 5. Moreover, the side of the push jack base 6 is provided with ear plates 7 facing the other set of hydraulic supports 100. The ear plates 7 extend towards the other set of hydraulic supports 100, so that when the two ends of the push jack 1 are respectively installed on the two ear plates 7, the push jack 1 is directly above the gap between the two bases 2, and the push jack 1 is pointed in the front and back direction, so as to realize the overall pushing of the end support of this application.

[0034] In practical applications, based on the above structure, the width of the end-end support of this application can always be maintained at around 1640mm to 1840mm, which is relatively small and suitable for roadways with small cross-sectional dimensions. For example, the two roadways of the re-mining face have trapezoidal cross-sections, generally with an upper width of 3100-3300mm and a lower width of 3800-4000mm. The roadways cannot be reinforced by anchor bolts or anchor cables. The roadways are reinforced by wire mesh and trapezoidal steel sheds. After using wire mesh and trapezoidal steel sheds, the roadway space becomes even narrower. The end-end support of this application can effectively support and move in such narrow roadways.

[0035] Based on the above, the end-end support of this application includes two sets of hydraulic supports 100 arranged on the left and right. The two sets of hydraulic supports 100 are moved by pushing each other through a pushing jack 1. The pushing jack 1 is located directly above the gap between the bases 2 of the two sets of hydraulic supports 100 and in the area between the front and rear columns. This avoids the pushing jack 1 occupying the lateral width space of the end-end support of this application, reducing the overall width of the end-end support of this application. This makes the end-end support of this application, which is used to support broken roofs and narrow roadways, applicable to narrow trapezoidal cross-section end-end areas. The two sets of hydraulic supports 100 move forward alternately with each other as fulcrums, and can be safely moved while effectively supporting the roadway roof.

[0036] Example 2

[0037] In this embodiment, a front connecting frame jack 21 and a rear connecting frame jack 22 are connected between the two bases 2 of the two sets of hydraulic supports 100, and a front connecting frame jack 31 and a rear connecting frame jack 32 are connected between the two top beams 3 of the two sets of hydraulic supports 100. The front connecting frame jack 21, the rear connecting frame jack 22, the front connecting frame jack 31, and the rear connecting frame jack 32 are all perpendicular to the direction of frame movement.

[0038] During the relocation process, the front connecting frame jack 21 and the rear connecting frame jack 22 of the base will tighten the base 2 of the hydraulic support 100 that is being lowered and relocated, and press it against the base 2 of another set of hydraulic supports 100. At the same time, the front connecting frame jack 31 and the rear connecting frame jack 32 of the top beam will tighten the top beam 3 of the hydraulic support 100 that is being lowered and relocated, and press it against the top beam 3 of another set of hydraulic supports 100.

[0039] The sides of both bases 2 facing the other base 2 are designed to abut against the side plate 25 so that the two bases 2 can abut against each other.

[0040] The sides of the two top beams 3 facing the other top beam 3 are all set as top beam abutting side plates 35 so that the two top beams 3 can abut against each other.

[0041] Specifically, the base 2 has a front support 23 on the front side of the front column 4 and a rear support 24 on the rear side of the rear column 5. The two ends of the front connecting frame jack 21 are installed on the two front supports 23, and the two ends of the rear connecting frame jack 22 are installed on the two rear supports 24. Since the front column 4 and the rear column 5 are inclined, and a pushing jack 1 is also provided between the front column 4 and the rear column 5, the front connecting frame jack 21 is placed on the front side of the front column 4 on the base 2, and the rear connecting frame jack 22 is placed on the rear side of the rear column 5 on the base 2. This effectively exerts the pulling function while preventing the two from interfering with or affecting the front and rear columns and the pushing jack 1.

[0042] Specifically, the top beam 3 has front support 33 and rear support 34 on both sides between the front column 4 and the rear column 5. The two ends of the front connecting frame jack 31 are installed on the two front supports 33, and the two ends of the rear connecting frame jack 32 are installed on the two rear supports 34. Because the front column 4 and the rear column 5 are inclined, the front part of the top beam 3 generally needs to be equipped with a front beam and a swing rod 8, and the rear part generally needs to be equipped with a linkage mechanism and a protective beam 9. Therefore, installing the front connecting frame jack 31 and the rear connecting frame jack 32 on the top beam 3 between the front column 4 and the rear column 5 can effectively exert the pulling function while ensuring that the two do not interfere with or affect the front and rear columns and the top support mechanism installed on the top beam 3.

[0043] In this embodiment, the front connecting frame jack 21, the base rear connecting frame jack 22, the top beam front connecting frame jack 31, and the top beam rear connecting frame jack 32 connect the two hydraulic supports 100 into a whole, so that the two hydraulic supports 100 always remain in a mutually abutting state.

[0044] Example 3

[0045] Two top beams 3 are equipped with a reversible side panel 36 or a detachable side panel 37 on the side away from the other top beam 3. Both the reversible side panel 36 and the detachable side panel 37 can be installed on the side of the two top beams 3. The reversible side panel 36 and the detachable side panel 37 have the same connection dimensions with the top beam 3, which can meet the needs of interchangeable left and right working surfaces.

[0046] Example 4

[0047] The front end of the base 2 and the front end of the top beam 3 are connected by a swing rod 8. The swing rod 8 uses a double-link structure. The mechanism of the swing rod 8 is set at the front of the hydraulic support 100, which can reduce the front end sway and improve the stability of the hydraulic support 100.

[0048] The rear end of the base 2 and the rear end of the top beam 3 are equipped with a linkage mechanism and a shield beam 9. The front and rear linkages of the linkage structure, the base 2 and the shield beam 9 are arranged at the rear of the hydraulic support 100, which can reduce the rear end sway and improve the stability of the hydraulic support 100. The shield beam 9 blocks the inflow of gangue from the rear goaf.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A tail support for supporting a roadway with a broken roof and narrow space, characterized in that, The system includes two sets of hydraulic supports (100) arranged on the left and right sides. The two sets of hydraulic supports (100) are moved to each other by a push jack (1). The hydraulic support (100) includes a base (2), a top beam (3), a front column (4) and a rear column (5). The upper surface of the base (2) is provided with a push jack base (6) between the front column (4) and the rear column (5). The push jack bases (6) on the two sets of hydraulic supports (100) are staggered one in front and one behind. The side of the push jack base (6) is provided with an ear plate (7) facing the other set of hydraulic supports (100). The two ends of the push jack (1) are respectively installed on the two ear plates (7).

2. The end-tail support for supporting a broken roof and narrow roadway according to claim 1, characterized in that, A front connecting frame jack (21) and a rear connecting frame jack (22) are connected between the two bases (2) of the two sets of hydraulic supports (100) to tighten the two bases (2) together.

3. The end-tail support for supporting a broken roof and narrow roadway according to claim 2, characterized in that, The base (2) is provided with a front support (23) on the front side of the front column (4) and a rear support (24) on the rear side of the rear column (5). The two ends of the front connecting frame jack (21) are installed on the two front supports (23), and the two ends of the rear connecting frame jack (22) are installed on the two rear supports (24).

4. The end-tail support for supporting a broken roof and narrow roadway according to claim 1, characterized in that, The two sets of hydraulic supports (100) are connected by a front connecting jack (31) and a rear connecting jack (32) to tighten the two top beams (3) together.

5. The end-tail support for supporting a broken roof and narrow roadway according to claim 4, characterized in that, The top beam (3) is provided with a front support (33) and a rear support (34) on the front and rear sides between the front column (4) and the rear column (5), respectively. The two ends of the front connecting frame jack (31) are installed on the two front supports (33), and the two ends of the rear connecting frame jack (32) are installed on the two rear supports (34).

6. The end-end support for supporting a narrow roadway with a fractured roof according to any one of claims 1-5, characterized in that, The sides of the two bases (2) facing the other base (2) are provided as base abutment side plates (25) so that the two bases (2) can abut against each other.

7. The end-end support for supporting a narrow roadway with a fractured roof according to any one of claims 1-5, characterized in that, The sides of the two top beams (3) facing the other top beam (3) are provided as top beam abutting side plates (35) so that the two top beams (3) can abut against each other.

8. The end-end support for supporting a narrow roadway with a fractured roof according to any one of claims 1-5, characterized in that, Two of the top beams (3) are fitted with a reversible side panel (36) or a detachable side panel (37) on the side away from the other top beam (3). Both the reversible side panel (36) and the detachable side panel (37) can be installed on the side of the two top beams (3).

9. The end-end support for supporting a narrow roadway with a fractured roof according to any one of claims 1-5, characterized in that, The front end of the base (2) and the front end of the top beam (3) are connected by a swing rod (8), which uses a double-link structure.

10. The end-end support for supporting a narrow roadway with a fractured roof according to any one of claims 1-5, characterized in that, The rear end of the base (2) and the rear end of the top beam (3) are provided with a linkage mechanism and a protective beam (9).

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