阅读说明：本技术 一种端头支架集成型底调挡风机构及端头支架 (Integrated bottom adjusting wind shielding mechanism of end support and end support ) 是由 贾一 于永胜 王帅 唐家鑫 李�杰 刘子华 刘娜 李晓倩 王天华 于 2021-09-22 设计创作，主要内容包括：本发明公开了一种端头支架集成型底调挡风机构及端头支架,安装于端头支架102的底座75与煤帮之间；包括安装板71、底调板73、底调千斤顶74、上挡板77、侧挡板78、挡风板710；底调板73的一端与安装板71做门轴式铰接,底调千斤顶74的一端与安装板71铰接,另一端与底调板73铰接；挡风板710与底调板73的顶板41和上侧面分别固定；上挡板77和侧挡板78分别固定于挡风板710的上部和侧面。在底调千斤顶伸、收作用下,底调板打开、收回。底调板打开时顶到煤帮上,对端头支架的位置进行调整,底调板收回时,使底调板尽量贴近支架,保证支架能够顺利前移；当底调板打开时,挡风板可阻挡顺槽来风进入采空区。(The invention discloses an end bracket integrated bottom adjusting wind shielding mechanism and an end bracket, which are arranged between a base 75 and a coal side of an end bracket 102; comprises a mounting plate 71, a bottom adjusting plate 73, a bottom adjusting jack 74, an upper baffle plate 77, a side baffle plate 78 and a wind shield plate 710; one end of the bottom adjusting plate 73 is hinged with the mounting plate 71 in a door pivot mode, one end of the bottom adjusting jack 74 is hinged with the mounting plate 71, and the other end of the bottom adjusting jack is hinged with the bottom adjusting plate 73; the wind deflector 710 is fixed to the top plate 41 and the upper side surface of the bottom adjustment plate 73; the upper baffle 77 and the side baffle 78 are fixed to the upper portion and the side of the wind deflector 710, respectively. Under the extending and retracting action of the bottom adjusting jack, the bottom adjusting plate is opened and retracted. When the bottom adjusting plate is opened, the bottom adjusting plate is pushed to the coal side, the position of the end support is adjusted, and when the bottom adjusting plate is retracted, the bottom adjusting plate is close to the support as much as possible, so that the support can move forwards smoothly; when the bottom adjusting plate is opened, the wind shield can block the crossheading wind from entering the goaf.)

1. An integrated bottom-adjusting wind shielding mechanism of an end bracket is characterized by comprising a mounting plate (71), a bottom adjusting plate (73), a bottom adjusting jack (74), an upper baffle plate (77), a side baffle plate (78) and a wind shielding plate (710);

one end of the bottom adjusting plate (73) is hinged with the mounting plate (71) in a door pivot mode, one end of the bottom adjusting jack (74) is hinged with the mounting plate (71), and the other end of the bottom adjusting jack is hinged with the bottom adjusting plate (73);

the wind shield (710) is fixed with the top plate (41) and the upper side surface of the bottom adjusting plate (73) respectively;

the upper baffle (77) and the side baffle (78) are fixed to the upper portion and the side surface of the wind deflector (710), respectively.

2. The integrated bottom-adjusting wind shielding mechanism of an end bracket according to claim 1, wherein the two bottom-adjusting jacks (74) are arranged side by side up and down.

3. The integrated bottom-adjusting wind shielding mechanism of a head bracket according to claim 2, wherein the mounting plate (71) comprises a connecting plate (21), and the connecting plate (21) is provided with:

the fixing hole (24), the said fixing hole (24) and base connecting seat (31) pass the bolt fastening;

a group of double ears formed by the two ear plates (22) are hinged with the single ear plate (42) of the bottom adjusting plate (73);

the two single lug plates (23) are respectively hinged with the two groups of main rib lug plates (43) of the bottom adjusting plate (73);

the first connecting lug (25) and the second connecting lug (26), and the third connecting lug (26) and the fourth connecting lug (27) form two groups of double-lug plates respectively, and the double-lug plates are connected with the cylinder bottom ends of the two bottom adjusting jacks (74).

4. The integrated bottom-adjusting wind shielding mechanism of the head bracket according to claim 3, wherein a top plate (41) of the bottom-adjusting plate (73) is provided with a fixing hole (51), the fixing hole (51) is fixed with the wind shielding plate (710) through a bolt, and one side of the fixing hole (51) is provided with a key hole (52) for facilitating the installation of the bolt from the outside;

the connecting seat (44) of the bottom adjusting plate (73) is fixed with the fixing plate (63) of the wind shield (710) through a bolt, and the fixing plate (63) is provided with a key hole convenient for the bolt to be installed from the outer side;

four main rib ear plates (43) of the bottom adjusting plate (73) are welded with the top plate (41) to form a box structure which is connected with the wind shield (710).

5. The integrated bottom-adjusting wind shielding mechanism of the end bracket according to claim 4, wherein the baffle plate (61) of the wind shielding plate (710) is provided with a plurality of fixing holes which are respectively fixed with the bottom adjusting plate (73), the upper baffle plate (77) and the side baffle plate (78) through bolts, and the baffle plate (61) is provided with supporting ribs (62).

6. The integrated bottom-adjusting wind shielding mechanism of an end bracket according to claim 5, wherein:

the lower half part of the upper baffle (77) is provided with a fixing hole which is fixed with the wind shield (710) through a bolt;

one side of the side baffle (78) is provided with a fixing hole which is fixed with the wind shield (710) through a bolt;

the upper baffle (77) and the side baffle (78) are both rubber plates.

7. An end bracket, characterized in that the end bracket integrated bottom-adjusting wind shielding mechanism (101) of any one of claims 1 to 6 is installed between a base (75) and a coal side of an end bracket (102);

when the bottom adjusting jack (74) extends out, the bottom adjusting plate (73) is opened, and the tail end of the bottom adjusting plate is propped against the coal side;

when the bottom adjusting jack (74) retracts, the bottom adjusting plate (73) retracts to be close to the base (75).

8. An end bracket according to claim 7, wherein the base (75) is provided with a base attachment seat (31), the mounting plate (71) being secured to the base attachment seat (31).

Technical Field

The invention relates to a hydraulic support for a coal mine, in particular to an end support integrated bottom adjusting wind shielding mechanism and an end support.

Background

The hydraulic supports are connected with the conveyor along the fully mechanized mining face, arranged frame by frame, and positioned at two ends of the working face and called as end supports, wherein the first end support and the last end support are close to the coal side. In the coal mining process, because the conveyor frequently moves along the working face, the outermost end bracket is easy to be inclined in the forward moving process and even extruded between the coal side and the adjacent bracket. In order to avoid the situation, the end supports at the outermost sides of the two ends are required to be provided with bottom adjusting mechanisms, and the left and right positions of the supports are adjusted.

A ventilation system is arranged under a coal mine to supply air for a fully mechanized mining face so as to guarantee the life needs of underground personnel. In order to prevent air from entering a goaf from the crossheading through a neutral position between the outermost end supports at the two ends and the coal side and ensure the ventilation of a working face, a wind shielding mechanism is required to be arranged between the outermost end supports at the two ends and the coal side.

As shown in fig. 1, in the bottom-adjusting and wind-shielding mechanism in the prior art, the bottom-adjusting mechanism and the wind-shielding mechanism of the bracket are designed separately. The bottom adjusting mechanism is arranged on the inner side of the base, namely a bottom adjusting jack is arranged on the inner side of the base, and the bottom adjusting jack can extend out of the inner side of the base and jack the coal side to adjust the coal side; the wind shielding mechanism is arranged on the outer side (close to the coal side) of the shield beam side guard plate, and wind shielding is realized by arranging a wind shielding curtain on the shield beam side guard plate.

The bottom adjusting mechanism is small in contact area of the bottom adjusting jack and soft in coal side, so that the bottom adjusting jack is easy to be pricked into the coal side, the bottom adjusting jack is limited by the installation structure, the stroke is short, and the frame cannot be effectively adjusted.

The wind shielding mechanism is connected with the side guard plate of the shield beam, the connection strength and the stability are poor, the wind shielding mechanism is perpendicular to the side guard plate of the shield beam, and when the conveyor drives the support to move towards the coal side, the wind shielding mechanism is easily extruded and damaged.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention aims to provide an end support integrated bottom adjustment wind shielding mechanism and an end support, and aims to solve the technical problems in the prior art.

The purpose of the invention is realized by the following technical scheme:

the integrated bottom-adjusting wind shielding mechanism of the end bracket comprises a mounting plate 71, a bottom adjusting plate 73, a bottom adjusting jack 74, an upper baffle plate 77, a side baffle plate 78 and a wind shielding plate 710;

one end of the bottom adjusting plate 73 is hinged with the mounting plate 71 in a door pivot mode, one end of the bottom adjusting jack 74 is hinged with the mounting plate 71, and the other end of the bottom adjusting jack is hinged with the bottom adjusting plate 73;

the wind deflector 710 is fixed to the top plate 41 and the upper side surface of the bottom adjusting plate 73 respectively;

the upper and side guards 77 and 78 are fixed to the upper and side surfaces of the wind deflector 710, respectively.

In the end bracket of the invention, the end bracket integrated bottom wind shielding mechanism 101 is arranged between the base 75 and the coal side of the end bracket 102;

when the bottom adjusting jack 74 extends out, the bottom adjusting plate 73 is opened, and the tail end of the bottom adjusting plate is propped against the coal side;

when the bottom adjustment jack 74 is retracted, the bottom adjustment plate 73 is retracted to be close to the base 75.

Compared with the prior art, the integrated bottom adjusting wind shielding mechanism of the end bracket and the end bracket provided by the invention have the advantages that the mounting plate is fixed on the outer side (close to the coal side) of the base of the end bracket at the outermost side through the bolt, and the bottom adjusting plate is opened and retracted under the extending and retracting action of the bottom adjusting jack. When the bottom adjusting plate is opened, the bottom adjusting plate is pushed to the coal side, the position of the end support is adjusted, and when the bottom adjusting plate is retracted, the bottom adjusting plate is close to the support as much as possible, so that the support can move forwards smoothly;

the wind shield is fixed with the bottom adjusting plate through a bolt, and when the bottom adjusting plate is opened, the wind shield can prevent the crossheading wind from entering the goaf.

Drawings

Fig. 1 is a schematic view of a bottom-adjusting and wind-shielding mechanism in the prior art.

Fig. 2a and 2b are schematic front and top views of a mounting plate according to an embodiment of the present invention.

Fig. 3a and 3b are schematic front and top views of a base connector holder according to an embodiment of the invention.

Fig. 4a and 4b are schematic front and side views of a bottom tuning plate according to an embodiment of the present invention.

FIG. 5 is a schematic view of a top plate according to an embodiment of the present invention.

Fig. 6a, 6b and 6c are schematic front, side and top views respectively of a wind deflector according to an embodiment of the invention.

Fig. 7a and 7b are respectively a front view and a K-direction rotation schematic view of the integrated bottom-adjusting wind shielding mechanism according to the embodiment of the present invention.

FIG. 8 is a schematic view of an upper baffle plate according to an embodiment of the present invention.

FIG. 9 is a schematic view of a side dam of an embodiment of the present invention.

Fig. 10 is a schematic view of an end bracket for installing an integrated bottom-adjusting wind shielding mechanism according to an embodiment of the present invention.

In the figure:

21-connecting plate 22-ear plate 23-ear plate 24-fixing hole 25-connecting ear 26-connecting ear 27-connecting ear

31-base connecting seat

41-top plate 42-ear plate 43-main rib ear plate 44-connecting seat

51-fixing hole 52-keyhole

61-baffle plate 62-support rib 63-fixing plate

71-mounting plate 72-bolt 73-bottom adjusting plate 74-bottom adjusting jack 75-base 76-bolt 77-upper baffle 78-side baffle 79-bolt 710-wind shield

101-bottom wind shielding mechanism 102-end bracket

Detailed Description

The technical scheme in the embodiment of the invention is clearly and completely described below by combining the attached drawings in the embodiment of the invention; it is to be understood that the described embodiments are merely exemplary of the invention, and are not intended to limit the invention to the particular forms disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The terms that may be used herein are first described as follows:

the term "and/or" means that either or both can be achieved, for example, X and/or Y means that both cases include "X" or "Y" as well as three cases including "X and Y".

The terms "comprising," "including," "containing," "having," or other similar terms of meaning should be construed as non-exclusive inclusions. For example: including a feature (e.g., material, component, ingredient, carrier, formulation, material, dimension, part, component, mechanism, device, process, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product, or article of manufacture), is to be construed as including not only the particular feature explicitly listed but also other features not explicitly listed as such which are known in the art.

The term "consisting of … …" is meant to exclude any technical feature elements not explicitly listed. If used in a claim, the term shall render the claim closed except for the inclusion of the technical features that are expressly listed except for the conventional impurities associated therewith. If the term occurs in only one clause of the claims, it is defined only to the elements explicitly recited in that clause, and elements recited in other clauses are not excluded from the overall claims.

The term "parts by mass" is intended to indicate a mass ratio relationship between a plurality of components, for example: if X component is X parts by mass and Y component is Y parts by mass, the mass ratio of the X component to the Y component is X: Y; 1 part by mass may represent any mass, for example: 1 part by mass may be expressed as 1kg or 3.1415926 kg. The sum of the parts by mass of all the components is not necessarily 100 parts, and may be more than 100 parts, less than 100 parts, or equal to 100 parts. Parts, ratios and percentages described herein are by mass unless otherwise indicated.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured," etc., are to be construed broadly, as for example: can be fixedly connected, can also be detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.

When concentrations, temperatures, pressures, dimensions, or other parameters are expressed as ranges of values, the ranges are to be understood as specifically disclosing all ranges formed from any pair of upper, lower, and preferred values within the range, regardless of whether ranges are explicitly recited; for example, if a numerical range of "2 ~ 8" is recited, then the numerical range should be interpreted to include ranges of "2 ~ 7", "2 ~ 6", "5 ~ 7", "3 ~ 4 and 6 ~ 7", "3 ~ 5 and 7", "2 and 5 ~ 7", and the like. Unless otherwise indicated, the numerical ranges recited herein include both the endpoints thereof and all integers and fractions within the numerical range.

The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description only, and are not intended to imply or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting herein.

Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art. Those not specifically mentioned in the examples of the present invention were carried out according to the conventional conditions in the art or conditions suggested by the manufacturer. The reagents or instruments used in the examples of the present invention are not specified by manufacturers, and are all conventional products available by commercial purchase.

The integrated bottom-adjusting wind shielding mechanism of the end bracket comprises a mounting plate 71, a bottom adjusting plate 73, a bottom adjusting jack 74, an upper baffle plate 77, a side baffle plate 78 and a wind shielding plate 710;

one end of the bottom adjusting plate 73 is hinged with the mounting plate 71 in a door pivot mode, one end of the bottom adjusting jack 74 is hinged with the mounting plate 71, and the other end of the bottom adjusting jack is hinged with the bottom adjusting plate 73;

the wind deflector 710 is fixed to the top plate 41 and the upper side surface of the bottom adjusting plate 73 respectively;

the upper and side guards 77 and 78 are fixed to the upper and side surfaces of the wind deflector 710, respectively.

The bottom adjusting jacks 74 are two in number and are arranged side by side up and down.

The mounting plate 71 includes a connecting plate 21, the connecting plate 21 is provided with:

the fixing hole 24 is fixed with the base connecting seat 31 through a bolt 72;

a group of double ears formed by the two ear plates 22 are hinged with the single ear plate 42 of the bottom adjusting plate 73;

the two single lug plates 23 are respectively hinged with the two groups of main rib lug plates 43 of the bottom adjusting plate 73;

the first connecting lug 25 and the second connecting lug 26, and the third connecting lug 26 and the fourth connecting lug 27 form two groups of double-lug plates respectively, and the two groups of double-lug plates are connected with the cylinder bottom ends of the two bottom adjusting jacks 74 respectively.

A top plate 41 of the bottom adjusting plate 73 is provided with a fixing hole 51, the fixing hole 51 and the wind shield 710 are fixed through a bolt, and one side of the fixing hole 51 is provided with a key hole 52 which is convenient for the bolt 79 to be installed from the outer side;

the connecting seat 44 of the bottom adjusting plate 73 is fixed with the fixing plate 63 of the wind shield 710 through a bolt, and the fixing plate 63 is provided with a key hole convenient for the bolt to be installed from the outer side;

four main rib ear plates 43 of the bottom adjusting plate 73 are welded with the top plate 41 to form a box structure which is connected with the wind shield 710.

The baffle 61 of the wind deflector 710 is provided with a plurality of fixing holes which are respectively fixed with the bottom adjusting plate 73, the upper baffle 77 and the side baffle 78 through bolts, and the baffle 61 is provided with support ribs 62.

The lower half part of the upper baffle plate 77 is provided with a fixing hole which is fixed with the wind shield plate 710 through a bolt;

one side of the side baffle 78 is provided with a fixing hole which is fixed with the wind shield 710 through a bolt;

the upper baffle plate 77 and the side baffle plate 78 are both rubber plates.

In the end bracket of the invention, the end bracket integrated bottom wind shielding mechanism 101 is arranged between the base 75 and the coal side of the end bracket 102;

when the bottom adjusting jack 74 extends out, the bottom adjusting plate 73 is opened, and the tail end of the bottom adjusting plate is propped against the coal side;

when the bottom adjustment jack 74 is retracted, the bottom adjustment plate 73 is retracted to be close to the base 75.

The base 75 is provided with a base connecting seat 31, and the mounting plate 71 is fixed with the base connecting seat 31.

In summary, the integrated bottom-adjusting wind shielding mechanism and the end bracket according to the embodiment of the invention mainly comprise a mounting plate, a bottom adjusting plate, a wind shielding plate and a bottom-adjusting jack.

The mounting plate is fixed on the outer side (close to the coal side) of the base of the outermost end bracket through bolts; one end of the bottom adjusting plate is provided with a hinge hole and is hinged with the mounting plate in a door-hinge-like manner through a pin shaft; the bottom of the bottom adjusting jack cylinder is hinged with the mounting plate, and the end of the piston rod is hinged with the bottom adjusting plate. Under the extending and retracting action of the bottom adjusting jack, the bottom adjusting plate is opened and retracted. When the bottom adjusting plate is opened, the bottom adjusting plate is pushed to the coal side, the position of the end support is adjusted, and when the bottom adjusting plate is retracted, the bottom adjusting plate is pressed close to the support as much as possible, so that the support can move forwards smoothly.

The wind shield is fixed with the bottom adjusting plate through a bolt, and when the bottom adjusting plate is opened, the wind shield can prevent the crossheading wind from entering the goaf.

In order to more clearly show the technical solutions and the technical effects provided by the present invention, the following detailed description is provided for the embodiments of the present invention with specific embodiments.

Example 1

As shown in fig. 2a, 2b to 10:

as shown in fig. 2a, 2b, 3a, 3b, 4a, 4b and 7a, 7 b:

as shown in fig. 2a and 2b, fig. 2a and 2b show a mounting plate 71 of the integrated bottom-adjusting wind shielding mechanism (fig. 7a and 7b) of the present invention, a connecting plate 21 of the mounting plate is provided with a fixing hole 24, and the fixing hole 24 and the base connecting seat 31 (fig. 3a and 3b) are fixed by a bolt 72 (fig. 7a and 7 b); the ear plates 22 are two pieces, form a group of double ears and are hinged with the single ear plate 42 of the bottom adjusting plate (fig. 4a and 4 b); the ear plates 23 are two pieces, and are hinged as two groups of main rib ear plates 43 corresponding to the bottom adjusting plates (fig. 4a and 4b) respectively; the connecting lugs 25 and 26, and the connecting lugs 26 and 27 form two sets of double lug plates, respectively, which are connected to the bottom end of the bottom adjusting jack 74 in fig. 7a and 7b, and the two bottom adjusting jacks are arranged up and down.

As shown in fig. 4a, 4b, 5, 6a, 6b, 6c and 7a, 7 b:

fig. 4a and 4b show a bottom adjustment plate 73 of the integrated bottom adjustment wind shielding mechanism (fig. 7a and 7b) according to the present invention; FIG. 5 shows the top plate 41 of the bottom adjustment plate (FIG. 4a, FIG. 4 b); fig. 6a, 6b, and 6c show a wind deflector 710 of an integrated bottom-adjusting wind deflector according to the present invention (fig. 7a and 7 b).

As shown in fig. 4a and 4b, the ear plate 42 and the main rib ear plate 43 of the bottom adjusting plate are hinged with the mounting plate 71 of fig. 7a and 7 b; the top plate 41 is provided with a fixing hole 51 (fig. 5) and a key hole 52 (fig. 5), and is fixed with the wind deflector 710 of fig. 7a and 7b through a bolt 79 (fig. 7a and 7b), as shown in fig. 7a and 7b, the number of bolts 79 is 14, and the middle 8 bolts are positioned in the box body of the bottom adjusting plate, so the key hole 52 (fig. 5) is opened on the top plate 41 of the bottom adjusting plate, and the bolts 79 (fig. 7a and 7b) are convenient to install from the outer side; the connecting base 44 is fixed to a fixing plate 63 of the wind deflector (fig. 6a, 6b, 6c) by 3 bolts 76 (fig. 7a, 7b), and the fixing plate 63 (fig. 6a, 6b, 6c) is provided with a keyhole to facilitate the installation of the bolt 76 (fig. 7a, 7b) from the outside. Four main rib ear plates 43 are welded with the top plate 41, and are used as the bottom adjusting plate, namely, the main rib ear plates 43 and the lower part of the top plate 41 support the coal side in the front view, and the bracket base is adjusted; the left half of the front view mainly serves as a connecting wind deflector 710 (fig. 7a, 7b), where the design of the box is used to improve the structural strength.

As shown in fig. 6a, 6b, and 6c, the flap 61 of the wind deflector is provided with a plurality of fixing holes, and is fixed to the bottom flap 73 (fig. 7a and 7b), the upper flap 77 (fig. 7a and 7b), and the side flaps 78 (fig. 7a and 7b) by bolts 79 (fig. 7a and 7 b); the support ribs 62 serve to increase the strength of the baffle 61.

As shown in fig. 8 and 9 and fig. 7a and 7 b:

fig. 8 shows an upper baffle 77 of the integrated bottom-adjusting wind shielding mechanism (fig. 7a and 7b) of the present invention, which is made of hard rubber and has a thickness of 16mm, and the lower half portion of the integrated bottom-adjusting wind shielding mechanism is provided with a fixing hole to be fixed with a wind shielding plate 710 (fig. 7a and 7b) by a bolt 79 (fig. 7a and 7 b).

Fig. 9 shows a side baffle 78 of the integrated bottom-adjusting wind shielding mechanism (fig. 7a and 7b) of the present invention, which is made of hard rubber and has a thickness of 16mm, and has a fixing hole at one side thereof to be fixed to a wind shielding plate 710 (fig. 7a and 7b) by a bolt 79 (fig. 7a and 7 b).

Referring to fig. 7a and 7b, the integrated bottom-adjusting wind shielding mechanism of the present invention is shown in an assembly diagram, which includes a mounting plate 71, a bolt 72, a bottom adjusting plate 73, a bottom adjusting jack 74, a base 75, a bolt 76, an upper baffle 77, a side baffle 78, a bolt 79, and a wind shielding plate 710.

As described above, the mounting plate 71 is fixed to the base 75 by the bolts 72. An ear plate at one end of the bottom adjusting plate 73 is hinged with the mounting plate 71 in a door pivot mode, the cylinder bottom of the bottom adjusting jack 74 is hinged with the mounting plate 71, a piston rod is hinged with the bottom adjusting plate 73, the stretching and the retracting of the bottom adjusting jack 74 control the bottom adjusting plate 73 to be opened and retracted, when the bottom adjusting plate 73 is opened, the tail end of the bottom adjusting plate is propped against the coal side, the position of the end support is adjusted, and when the bottom adjusting plate 73 is retracted, the support can be guaranteed to move forwards smoothly. The bottom adjustment jacks 74 are arranged one above the other to provide the required adjustment force while ensuring that the bottom adjustment plate 73 is as close to the base 75 as possible when retracted.

The wind shield 710 is fixed with the top plate of the bottom adjusting plate 73 through a bolt 79, is fixed with the upper side surface of the bottom adjusting plate 73 through a bolt 76, and adopts two fixing positions to ensure reliable connection; the upper baffle plate 77 and the side baffle plate 78 are both rubber plates and are fixed on the upper part and the side surface of the wind shield plate 710 through bolts 79, and the rubber material can reduce the weight of the baffle plates, and can also enable the side baffle plates to be close to the coal wall, so that the situation that the crossheading incoming wind enters the goaf is reduced.

As shown in fig. 10, 3a, 3b and 7a, 7 b:

fig. 10 shows an end bracket for mounting the integrated bottom-adjusting wind shielding mechanism of the present invention. As shown, the bottom-adjusting wind shielding mechanism 101 is installed between the head support 102 and the coal side, and is connected to the support base 75 (fig. 7a and 7b) by the bolts 72 (fig. 7a and 7 b). As long as the base 75 (fig. 7a and 7b) is provided with the base connector holder 31 (fig. 3a and 3b), the mechanism can be mounted on any one of the end brackets, and the versatility is good.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.