End bracket side protection mechanism and end bracket

Abstract

The present invention discloses a side protection mechanism of an end bracket and an end bracket, comprising a front hanging plate, a rear hanging plate, a telescopic guard plate, and a large side plate; the front hanging plate is hinged to the front of the top beam of the end bracket, and is hinged to one end of two side protection jacks, and the other ends of the two side protection jacks are respectively hinged to the top beam; the rear hanging plate is hinged to the rear of the top beam of the end bracket, and is connected to the top beam through two connecting rods, the rear hanging plate is a box-type structure, the interior of which is connected to the bottom ends of the cylinders of the two telescopic jacks, and the other piston rod ends of the two telescopic jacks are connected to two groups of ear plates of the telescopic guard plate; the telescopic guard plate is slidably arranged inside the rear hanging plate; the large side plate is connected to the base. The side protection mechanism of the end bracket and its auxiliary mechanisms are all installed on the side close to the coal seam. When the top beam of the end bracket rises, the telescopic guard plate extends out and overlaps with the large side plate, so that the outer side of the end bracket is completely closed. The protection height is high and is not limited by the distance between the end frame and the coal seam. It works together with the large side panels of the base to achieve good sealing effect. The telescopic guard plate can be extended and retracted as the height of the bracket changes, further increasing the sealing range.

Description

Technical Field

[0001] The invention relates to an end support of a fully mechanized mining working face in an underground coal mine, and in particular to an end support side protection mechanism and the end support. Background Art

[0002] The end supports of the fully mechanized mining working face in underground coal mines are located at both ends of the working face. The first or last end support is close to the coal wall of the roadway, the roadway roof or when the coal wall is broken, it is easy for coal to fall into the support. For this reason, a side protection mechanism needs to be added to the outer side of the end support (close to the coal wall) to prevent coal from falling in.

[0003] like Figure 1 As shown, in the prior art, the side protection mechanism of the end support mostly adopts the "wing-spreading" type, that is, by installing a detachable side plate on the outside of the support top beam, the side plate is lifted or retracted under the action of the jack. When the side plate is lifted, it supports the tunnel roof to prevent coal from falling. When the side plate is retracted, it keeps the side plate away from the coal seam to ensure smooth support.

[0004] This structure relies on side plates for top protection, and has the disadvantage of a small protection area. It cannot effectively prevent coal from falling from the tunnel roof or coal bank into the support. This disadvantage is particularly obvious, especially when the end support is close to the coal bank, resulting in a narrow left and right width of the side plates.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide an end bracket side protection mechanism and an end bracket to solve the above-mentioned technical problems existing in the prior art.

[0007] The objective of the present invention is achieved through the following technical solutions:

[0008] The end bracket side protection mechanism of the present invention comprises a front hanging plate 13, a rear hanging plate 15, a telescopic guard plate 5, and a large side plate 8;

[0009] The front hanging plate 13 is hinged to the outer ear plate of the front part of the end bracket top beam 14 through three hinged ears, and is hinged to one end of two side guard jacks 6 through two sets of ear plates, and the other ends of the two side guard jacks 6 are respectively hinged to the top beam 14;

[0010] The rear hanging plate 15 is hinged to the outer ear plate at the rear of the end bracket top beam 14 through three hinged ears, and is connected to one end of two connecting rods 7 through two groups of ear plates, and the other ends of the two connecting rods 7 are respectively connected to the top beam 14. The rear hanging plate 15 is a box-shaped structure, and its interior is connected to the cylinder bottom ends of two telescopic jacks 16 through two groups of ear plates, and the other end piston rod ends of the two telescopic jacks 16 are connected to the two groups of ear plates of the telescopic guard plate 5;

[0011] The telescopic guard plate 5 is slidably arranged inside the rear hanging plate 15;

[0012] The large side panel 8 is connected to the two single-ear panels of the base 12 through four connecting rods 9, the four fixing holes 4 of the large side panel 8 are connected to the base 12 through bolts 10, and the four fixing shafts 3 of the large side panel 8 are connected to the base 12 in a door shaft manner.

[0013] The end bracket includes the above-mentioned end bracket side protection mechanism, and the front hanging plate 13, rear hanging plate 15, telescopic protection plate 5, large side plate 8 and auxiliary mechanisms of the end bracket side protection mechanism are all installed on the side close to the coal seam.

[0014] Compared with the prior art, the end bracket side guard mechanism and the end bracket provided by the present invention have a high protection height and are not limited by the distance between the end bracket and the coal seam. They work together with the large side plate of the base to achieve a good sealing effect. The telescopic guard plate can be extended and retracted as the height of the bracket changes, further increasing the sealing range and completely closing the outer side of the end bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the "wing-spreading" side protection structure of the terminal bracket in the prior art;

[0016] Figure 2a , Figure 2b They are schematic diagrams of the front hanging plate of the end bracket side protection mechanism provided by the embodiments of the present invention in front view and side view respectively;

[0017] Figure 3a , Figure 3b They are respectively a rear hanging plate of the end bracket side protection mechanism and a schematic diagram of its AA-direction structure provided in an embodiment of the present invention;

[0018] Figure 4a , Figure 4b They are respectively schematic diagrams of the front view and side view of the rear hanging plate connecting rod of the end bracket side protection mechanism provided by the embodiments of the present invention;

[0019] Figure 5a , Figure 5b They are respectively a telescopic guard plate of the end bracket side guard mechanism and a schematic diagram of its AA-direction structure provided in an embodiment of the present invention;

[0020] Figure 6a , Figure 6b They are schematic diagrams of the front view and side view of the base large side plate of the end bracket side protection mechanism provided by the embodiments of the present invention;

[0021] Figure 7a , Figure 7b They are schematic diagrams of the front view and side view of the base large side plate connecting rod of the end bracket side protection mechanism provided by the embodiments of the present invention;

[0022] Figure 8a , Figure 8b , Figure 8c They are schematic diagrams of the side surface of the end support structure and its AA and BB directions provided in the embodiments of the present invention.

[0023] In the figure:

[0024] 1- hinged ear, 2- ear plate, 3- fixed shaft, 4- fixed hole, 5- telescopic guard plate, 6- side guard jack, 7- connecting rod 1, 8- large side plate, 9- connecting rod 2, 10- bolt, 11- transporter nose, 12- base, 13- front hanging plate, 14- top beam, 15- rear hanging plate, 16- telescopic jack. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments, which does not constitute a limitation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0026] First, the terms that may be used in this article are explained as follows:

[0027] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y means both “X” or “Y” and “X and Y”.

[0028] The terms "include", "comprises", "contains", "has" or other descriptions with similar semantics should be interpreted as non-exclusive inclusion. For example, including certain technical feature elements (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or products, etc.) should be interpreted as including not only certain technical feature elements explicitly listed, but also other technical feature elements known in the art that are not explicitly listed.

[0029] The term "consisting of..." means excluding any technical feature elements not explicitly listed. If this term is used in a claim, it will make the claim closed, so that it does not contain technical feature elements other than the technical feature elements explicitly listed, except for the conventional impurities related to them. If this term only appears in a clause of a claim, it only limits the elements explicitly listed in the clause, and the elements recorded in other clauses are not excluded from the overall claim.

[0030] Unless otherwise specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0031] The orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience and simplification of description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation of this document.

[0032] The contents not described in detail in the examples of the present invention belong to the prior art known to professionals in the field. If no specific conditions are specified in the examples of the present invention, the conditions are carried out according to the conventional conditions in the field or the conditions recommended by the manufacturer. If the manufacturer is not specified in the reagents or instruments used in the examples of the present invention, they are all conventional products that can be purchased commercially.

[0033] The end bracket side protection mechanism of the present invention comprises a front hanging plate 13, a rear hanging plate 15, a telescopic guard plate 5, and a large side plate 8;

[0034] The front hanging plate 13 is hinged to the outer ear plate of the front part of the end bracket top beam 14 through three hinged ears, and is hinged to one end of two side guard jacks 6 through two sets of ear plates, and the other ends of the two side guard jacks 6 are respectively hinged to the top beam 14;

[0035] The rear hanging plate 15 is hinged to the outer ear plate at the rear of the end bracket top beam 14 through three hinged ears, and is connected to one end of two connecting rods 7 through two groups of ear plates, and the other ends of the two connecting rods 7 are respectively connected to the top beam 14. The rear hanging plate 15 is a box-shaped structure, and its interior is connected to the cylinder bottom ends of two telescopic jacks 16 through two groups of ear plates, and the other end piston rod ends of the two telescopic jacks 16 are connected to the two groups of ear plates of the telescopic guard plate 5;

[0036] The telescopic guard plate 5 is slidably arranged inside the rear hanging plate 15;

[0037] The large side panel 8 is connected to the two single-ear panels of the base 12 through four connecting rods 9, the four fixing holes 4 of the large side panel 8 are connected to the base 12 through bolts 10, and the four fixing shafts 3 of the large side panel 8 are connected to the base 12 in a door shaft manner.

[0038] The end bracket including the above-mentioned end bracket side protection mechanism is characterized in that the front hanging plate 13, the rear hanging plate 15, the telescopic protection plate 5, the large side plate 8 and the auxiliary mechanism of the end bracket side protection mechanism are all installed on the side close to the coal seam.

[0039] Below the front hanging plate 13 is the scraper conveyor head 11 .

[0040] The rear hanging plate 15 is located above the large side plate 8 in the vertical direction and outside the large side plate 8 in the left-right direction.

[0041] When the top beam of the end bracket rises, the telescopic guard plate 5 extends out, and when the end bracket is at the highest use height and the telescopic guard plate 5 is fully extended, it still overlaps with the large side plate 8, so that the outer side of the end bracket is completely closed.

[0042] In summary, the end bracket side protection mechanism and the end bracket of the embodiment of the present invention are:

[0043] The side guard mechanism is mainly composed of three parts: the front hanging plate, the rear hanging plate and the large side plate. The front hanging plate and the rear hanging plate are hung on the outside of the top beam of the end bracket, and the large side plate is installed on the outside of the base of the end bracket (on the same side as the front and rear hanging plates);

[0044] The front hanging plate is mainly used to protect the front part of the end bracket, and it is necessary to ensure that the bracket does not interfere with the conveyor when the mining height is the lowest. At the same time, the front hanging plate can also be lifted up by the jack to facilitate the passage of maintenance personnel;

[0045] The rear hanging plate is a box-shaped structure, which is the core component of the side guard mechanism. Inside it, a guard plate that can be extended up and down is connected by two jacks.

[0046] The large side plate is installed on the same side of the bracket as the front and rear hanging plates, and is located below the rear hanging plate. When the bracket is raised or lowered, the telescopic guard plate in the rear hanging plate extends or retracts, and together with the large side plate, the entire outer side of the end bracket is completely closed to prevent coal from falling.

[0047] In order to more clearly demonstrate the technical solution and technical effects provided by the present invention, the embodiments of the present invention are described in detail with specific embodiments below.

[0048] Example 1

[0049] like Figure 2a , Figures 2b to 8a , Figure 8b , Figure 8c As shown:

[0050] like Figure 2a , Figure 2b As shown, the end bracket of the present invention ( Figure 8a , Figure 8b , Figure 8c ) of the front hanging plate 13, the three hinged ears 1 of the front hanging plate and the end bracket top beam 14 ( Figure 8a , Figure 8b , Figure 8c ) The outer ear plate of the front portion is connected; the two sets of ear plates 2 of the front hanging plate are connected to the side guard jack 6 ( Figure 8a , Figure 8b , Figure 8c ) is connected to one end, and the other end of the side guard jack 6 is connected to the top beam 14 ( Figure 8a , Figure 8b , Figure 8c ) connection. When the side guard jack 6 ( Figure 8a , Figure 8b , Figure 8c ) is retracted, the front hanging plate is vertically downward to play a protective role. When the side guard jack 6 ( Figure 8a , Figure 8b , Figure 8c ) is extended, the front hanging plate is lifted up, which is convenient for maintenance personnel to pass through. Figure 8a , Figure 8b , Figure 8c ), so the height of the front hanging plate itself should not be too high to avoid interference with the scraper conveyor head when the bracket descends.

[0051] like Figure 3a , Figure 3b As shown, the end bracket of the present invention ( Figure 8a , Figure 8b , Figure 8c ) of the rear hanging plate 15, the three hinged ears 1 of the rear hanging plate and the end bracket top beam 14 ( Figure 8a , Figure 8b , Figure 8c ) The outer ear plate at the rear is connected; the two sets of ear plates 2 of the rear hanging plate are connected to the connecting rod 7 ( Figure 8a , Figure 8b , Figure 8c ) is connected to one end of the connecting rod 7, and the other end of the connecting rod 7 is connected to the top beam 14 ( Figure 8a , Figure 8b , Figure 8c ) connection, the connecting rod 7 has two parts, under the action of the connecting rod 7, the rear hanging plate is kept vertical to the ground. The rear hanging plate is a box-shaped structure, and the two sets of ear plates 2 inside are connected with the telescopic jack 16 ( Figure 8a , Figure 8b , Figure 8c ) is connected to the bottom end of the cylinder, and the other end of the piston rod end of the telescopic jack 16 is connected to the telescopic guard plate 5 ( Figure 8a , Figure 8b , Figure 8c ).

[0052] like Figure 4a , Figure 4b , is the end bracket of the present invention ( Figure 8a , Figure 8b , Figure 8c )'s connecting rod 7.

[0053] like Figure 5a , Figure 5b As shown, the end bracket of the present invention ( Figure 8a , Figure 8b , Figure 8c ) of the telescopic guard plate 5, the two sets of ear plates 2 of the telescopic guard plate and the telescopic jack 16 ( Figure 8a , Figure 8b , Figure 8c ) is connected to the piston rod end, and under the action of the telescopic jack 16, the telescopic guard plate 5 ( Figure 8a , Figure 8b , Figure 8c ) on the rear hanging plate 15( Figure 8a , Figure 8b , Figure 8c ) extends or retracts internally.

[0054] like Figure 6a , Figure 6b As shown, the end bracket of the present invention ( Figure 8a , Figure 8b , Figure 8c ) of the large side plate 8, the two ear plates 2 of the large side plate and the base 12 ( Figure 8a , Figure 8b , Figure 8c ) through connecting rod 29 ( Figure 8a , Figure 8b , Figure 8c ) connection, the connecting rod 2 9 has four pieces, two pieces in a group, the ear plate 2 is a single ear plate, and the connecting ear corresponding to the base 12 is also a single ear plate; the four fixing holes 4 of the large side plate are connected to the base 12 ( Figure 8a , Figure 8b , Figure 8c ) connected; the four fixed shafts 3 of the large side panels are connected to the base 12 ( Figure 8a , Figure 8b , Figure 8c ) is connected in a door-axis manner. Through the above three connections, the large side panel 8 is fixed to the base 12 ( Figure 8a , Figure 8b , Figure 8c ) outside.

[0055] like Figure 7a , Figure 7b , is the end bracket of the present invention ( Figure 8a , Figure 8b, Figure 8c ) of the connecting rod 29.

[0056] like Figure 8a , Figure 8b , Figure 8c , is an end bracket using the above-mentioned new side protection mechanism. The front hanging plate 13, rear hanging plate 15, large side plate 8 and auxiliary mechanisms of the end bracket side protection mechanism are all installed on the same side. In underground applications, they are all installed close to the coal bank side to form a protective wall, thereby preventing coal from falling into the bracket when the tunnel roof or the coal bank is broken.

[0057] The height of the front hanging plate 13, the rear hanging plate 15, the telescopic guard plate 5, and the large side plate 8 depends on the height of the bracket, and all components meet the requirements that the bracket can be lowered to the lowest use height or the lowest height. Figure 8c In the BB view, the rear hanging plate 15 is located above the large side plate 8, but is located on the outside of the large side plate 8 in the left and right directions to ensure that the bracket can be brought to the lowest use height or the lowest height.

[0058] When in use, when the bracket is raised to a certain height so that the rear hanging plate 15 is about to be separated from the large side plate 8, the telescopic guard plate 5 is extended to provide further protection. Even when the bracket is at the highest use height, the telescopic guard plate 5 should ensure that it still overlaps with the large side plate 8 when it is fully extended to ensure the sealing effect of the side guard mechanism.

[0059] The connecting rod 7 is rigidly connected with the top beam 14 and the rear hanging plate 15 to ensure the stability of the rear hanging plate 15 when the working surface is inclined, and at the same time improve the protective strength of the rear hanging plate 15 when the amount of coal falling is large.

[0060] As described above, the vertical side guard mechanism of the present invention, the vertical and telescopic side guard mechanism is installed on the top beam, and the large side plate is installed and fixed on the base, so that the outer side of the end bracket is completely closed. It is the core part of the present invention, has a high protection height, and is not limited by the distance between the end bracket and the coal seam, and works together with the large side plate of the base to achieve good sealing effect; the telescopic guard plate can be extended and retracted as the height of the bracket changes, further increasing the sealing range, so that the outer side of the end bracket is completely closed.

[0061] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims. The information disclosed in the background technology section of this article is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or in any form that the information constitutes prior art known to those skilled in the art.

Claims

1. A side protection mechanism for an end bracket, characterized in that: It is composed of a front hanging plate (13), a rear hanging plate (15), a telescopic guard plate (5), a large side plate (8), a side guard jack (6), a telescopic jack (16), a connecting rod 1 (7) and a connecting rod 2 (9); The front hanging plate (13) is hinged to the outer ear plate at the front of the end bracket top beam (14) through three hinged ears, and is hinged to one end of two side guard jacks (6) through two groups of ear plates, and the other ends of the two side guard jacks (6) are respectively hinged to the top beam (14); The rear hanging plate (15) is hinged to the outer ear plate at the rear of the end bracket top beam (14) through three hinged ears, and is connected to one end of two connecting rods (7) through two groups of ear plates, and the other ends of the two connecting rods (7) are respectively connected to the top beam (14). The rear hanging plate (15) is a box-shaped structure, and its interior is connected to the cylinder bottom ends of two telescopic jacks (16) through two groups of ear plates, and the other end piston rod ends of the two telescopic jacks (16) are connected to the two groups of ear plates of the telescopic guard plate (5); The telescopic guard plate (5) is slidably arranged inside the rear hanging plate (15); The large side plate (8) is connected to the two single-ear plates of the base (12) through two single-ear plates through four connecting rods (9); the four fixing holes (4) of the large side plate (8) are connected to the base (12) through bolts (10); and the four fixing shafts (3) of the large side plate (8) are connected to the base (12) in a door shaft manner; The rear hanging plate (15) is located above the large side plate (8) in the vertical direction and outside the large side plate (8) in the left-right direction.

2. An end bracket comprising the end bracket side protection mechanism according to claim 1, characterized in that: The front hanging plate (13), the rear hanging plate (15), the telescopic guard plate (5), the large side plate (8) and the auxiliary mechanisms of the end bracket side protection mechanism are all installed on the side close to the coal seam.

3. The end bracket according to claim 2, characterized in that: Below the front hanging plate (13) is the scraper conveyor head (11).

4. The end bracket according to claim 3, characterized in that: When the top beam of the end bracket is raised, the telescopic guard plate (5) is extended, and when the end bracket is at the highest use height and the telescopic guard plate (5) is fully extended, there is still an overlap between the end bracket and the large side plate (8), so that the outer side of the end bracket is completely closed.

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