Scraper support for thin coal seam working face and equipment for thin coal seam working face

Abstract

The present invention discloses a thin coal seam working face scraper pad frame and thin coal seam working face equipment, including a top seat, a base, a middle plate, a guide sleeve, a guide shaft, a positioning member, a lifting jack, a wheel frame and a wheel frame jack, wherein the top seat is arranged above the base; the middle plate is arranged between the top seat and the base; the guide sleeve is fixedly connected between the middle plate and the base, the guide shaft passes through the middle plate and is slidably assembled in the guide sleeve, and the guide shaft is connected to the top seat; the positioning member passes through the guide sleeve and the guide shaft; the lifting jack is connected between the top seat and the base, the wheel frame is arranged on the outer peripheral side of the guide sleeve and can slide relative to the guide sleeve, and the wheel frame is provided with a plurality of rollers; the wheel frame jack is connected between the middle plate and the wheel frame, and the wheel frame jack is used to drive the wheel frame to move up and down. The scraper pad frame of the present invention can avoid deformation caused by touching the bottom plate during the pushing process, thereby avoiding the tilting of the scraper head caused by the uneven bottom of the pad frame.

Description

Technical Field

[0001] The invention relates to the technical field of thin coal seam mining, and in particular to a thin coal seam working face scraper support frame and thin coal seam working face equipment. Background Art

[0002] Thin coal seams are recognized as complex and difficult to mine due to factors such as small space, difficulty in equipment matching and roof management. Mining equipment for thin coal seams usually includes scraper conveyors, transfer machines, crushers, etc. In order to achieve the transfer between scraper conveyors and transfer machines, the head of the scraper conveyor needs to be equipped with a head pad to achieve padding. However, in actual use, the head of the scraper conveyor is prone to tilting, affecting the overall moving efficiency and reliability. Summary of the invention

[0003] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0004] Under actual working conditions, the tunnel floor is complex and changeable, and is prone to ups and downs. The traditional machine head pad that is in direct contact with the ground is very likely to touch the bottom plate during the pushing process and cause protrusions, depressions, etc. The unevenness of the bottom of the pad can easily aggravate the tilt of the machine head, thereby affecting the pushing efficiency and reliability.

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, an embodiment of the present invention proposes a scraper pad frame for a thin coal seam working surface, which can avoid deformation caused by touching the bottom plate during the pushing process, and further avoid the tilting of the scraper head caused by the uneven bottom of the pad frame, thereby ensuring the overall pushing efficiency and reliability.

[0007] The embodiment of the present invention also provides a thin coal seam working face equipment including the above-mentioned thin coal seam working face scraper pad.

[0008] The scraper support frame of the thin coal seam working face of the embodiment of the present invention comprises:

[0009] A top seat and a base, wherein the top seat is arranged above the base, and the top seat is used to be connected to the scraper head;

[0010] A middle plate, the middle plate being arranged between the top seat and the base;

[0011] A guide sleeve and a guide shaft, wherein the guide sleeve is fixedly connected between the middle plate and the base, the guide shaft passes through the middle plate and is slidably assembled in the guide sleeve, and the guide shaft is connected to the top seat;

[0012] a positioning member, the positioning member passing through the guide sleeve and the guide shaft to position the guide shaft at a position adjusted relative to the guide sleeve by sliding;

[0013] A lifting jack, the lifting jack passes through the middle plate and is connected between the top seat and the base, and the lifting jack is used to drive the top seat to move up and down after the positioning member releases the positioning of the guide shaft;

[0014] A wheel frame, the wheel frame is arranged on the outer peripheral side of the guide sleeve and is slidable relative to the guide sleeve, and the wheel frame is provided with a plurality of rollers for contacting the bottom plate and supporting the base away from the bottom plate of the tunnel;

[0015] A wheel frame jack is connected between the middle plate and the wheel frame, and is used to drive the wheel frame to move up and down.

[0016] In some embodiments, the guide shaft is connected to the top seat ball joint, the top end of the lifting jack is pivotally assembled with the top seat, the bottom end of the lifting jack is pivotally assembled with the base, and the pivot axes at both ends of the lifting jack are arranged in parallel.

[0017] In some embodiments, the top end of the wheel frame jack is pivotally assembled with the middle plate, the bottom end of the wheel frame jack is pivotally assembled with the base, the pivot axes at both ends of the wheel frame jack are arranged in parallel, and the pivot axes at both ends of the lifting jack and the pivot axes at both ends of the wheel frame jack are arranged vertically.

[0018] In some embodiments, two of the lifting jacks and two of the wheel frame jacks are provided, the two lifting jacks are arranged relative to each other in a first direction perpendicular to the vertical direction, and the two wheel frame jacks are arranged relative to each other in a second direction perpendicular to the vertical direction, the first direction is perpendicular to the second direction, and the two lifting jacks and the two wheel frame jacks are both provided on the circumferential side of the guide sleeve and are alternately arranged along the circumference of the guide sleeve.

[0019] In some embodiments, the top seat is provided with a plurality of first ear plates, the plurality of first ear plates are arranged at intervals in the first direction, and the top seat is pivotally assembled with the scraper head through the plurality of first ear plates, and the pivot axis of the first ear plates and the scraper head extends along the first direction;

[0020] Both ends of the lifting jack are respectively pivotally assembled with the top seat and the base through second ear plates;

[0021] Both ends of the wheel frame jack are respectively pivotally assembled with the middle plate and the base through third ear plates.

[0022] In some embodiments, the wheel frame includes a frame portion and a plurality of connecting portions, the frame portion is sleeved on the outer peripheral side of the guide sleeve and can slide up and down relative to the guide sleeve, the plurality of connecting portions are arranged on the peripheral side of the frame portion and are arranged at intervals along the circumference of the frame portion, the plurality of rollers are correspondingly assembled on the outer ends of the plurality of connecting portions, and the second ear plate and the third ear plate are both located between two adjacent connecting portions.

[0023] In some embodiments, the guide sleeve is provided with a plurality of first holes, the plurality of first holes are arranged at intervals along the extension direction of the guide sleeve, the guide shaft is provided with a plurality of second holes, the plurality of second holes are arranged at intervals along the extension direction of the guide shaft, and the positioning member is simultaneously inserted into one of the first holes and one of the second holes to realize the positioning of the guide shaft;

[0024] The horizontal length dimension of the aperture of the first hole is greater than the vertical height dimension of the aperture of the first hole, the horizontal length dimension of the aperture of the second hole is greater than the vertical height dimension of the aperture of the second hole, and the horizontal width dimension of the positioning member is greater than the vertical thickness dimension of the positioning member.

[0025] In some embodiments, a flange is provided at the top end of the guide sleeve, the guide sleeve is connected to the bottom of the middle plate through the flange, and the guide shaft passes through the flange.

[0026] The thin coal seam working face equipment of an embodiment of the present invention includes a thin coal seam working face scraper pad frame as described in any of the above embodiments, wherein the thin coal seam working face scraper pad frame is arranged in a tunnel connected to the working face, the roof of the tunnel is flush with the roof of the working face, and the bottom plate of the tunnel is lower than the bottom plate of the working face.

[0027] In some embodiments, including:

[0028] A scraper conveyor, the scraper conveyor comprising a scraper head, the scraper head being arranged in the tunnel, the extension direction of the scraper head being arranged perpendicular to the working face, and the scraper support frame of the thin coal seam working face being supported and fixed at the bottom of the scraper head;

[0029] A transfer machine, the transfer machine is arranged in the tunnel and located on the side of the thin coal seam scraper frame away from the working surface, the transfer machine is lower than the scraper conveyor and is used to receive the coal and rock dropped from the scraper conveyor;

[0030] An end hydraulic support, which is arranged in the lane and connected to the rear of the transfer machine;

[0031] When the end hydraulic support pushes the transfer machine, the wheel frame jack drives the wheel frame to move downward, and the thin coal seam working face scraper pad moves along the tunnel floor under the action of the roller;

[0032] When the end hydraulic support is pulled, the wheel frame jack drives the wheel frame to move upward, and the base of the scraper support frame of the thin coal seam working face is in close contact with the bottom plate of the roadway.

[0033] Beneficial effects: The thin coal seam working face scraper pad frame and thin coal seam working face equipment of the embodiments of the present invention, the thin coal seam working face scraper pad frame can avoid deformation caused by touching the bottom plate during the pushing process, and further avoid the scraper head tilting caused by the uneven bottom of the pad frame, thereby ensuring the overall pushing efficiency and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the scraper conveyor pad frame after the wheel frame is moved downward according to an embodiment of the present invention.

[0035] Figure 2 It is a schematic diagram of the scraper conveyor pad frame after the wheel frame is moved upward according to an embodiment of the present invention.

[0036] Figure 3 It is a rear schematic diagram of a thin coal seam working face equipment according to an embodiment of the present invention.

[0037] Figure 4 It is a top view schematic diagram of the thin coal seam working face equipment according to an embodiment of the present invention.

[0038] Reference numerals:

[0039] 100-scraper pad frame;

[0040] 1-top seat; 11-first ear plate; 2-base; 3-middle plate; 4-guide sleeve; 5-guide shaft; 6-lifting jack; 61-second ear plate; 7-wheel frame jack; 71-third ear plate; 8-wheel frame; 81-frame; 82-connecting part; 9-roller;

[0041] 200-transfer machine;

[0042] 300-scraper head;

[0043] 400-end hydraulic support. DETAILED DESCRIPTION

[0044] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0045] like Figure 1As shown, the scraper frame for a thin coal seam working face (hereinafter referred to as the scraper frame 100) of an embodiment of the present invention includes a top seat 1, a base 2, a middle plate 3, a guide sleeve 4, a guide shaft 5, a positioning member, a lifting jack 6, a wheel frame 8 and a wheel frame jack 7.

[0046] The top seat 1 is arranged above the base 2, and the top seat 1 is used to be connected to the scraper head 300. For example, Figure 1 As shown, the top seat 1 and the base 2 can be generally rectangular plates, wherein the top seat 1 can be arranged directly above the base 2 and spaced apart from the base 2. When in use, the top seat 1 can be pivotally assembled under the scraper head 300 by a pin shaft, etc., and the base 2 can be directly placed on the bottom plate of the roadway.

[0047] The middle plate 3 is arranged between the top seat 1 and the base 2. For example, Figure 1 As shown, the middle plate 3 can be substantially a rectangular plate, and the middle plate 3 can be arranged between the top seat 1 and the base 2, and the middle plate 3 and the top seat 1 and the base 2 can be arranged at intervals.

[0048] The guide sleeve 4 is fixedly connected between the middle plate 3 and the base 2, the guide shaft 5 passes through the middle plate 3 and is slidably assembled in the guide sleeve 4, and the guide shaft 5 is connected to the top seat 1. Figure 1 and Figure 2 As shown, the guide sleeve 4 can be generally square tube-shaped and extend in the up-down direction. The bottom end of the guide sleeve 4 can be welded and fixed to the base 2. The middle plate 3 can be welded and fixed to the top end of the guide sleeve 4. The middle plate 3 can be provided with a through hole for the guide shaft to pass through.

[0049] The guide shaft 5 can be generally in the shape of a square rod, can pass through the through hole of the middle plate 3, and can be slidably assembled in the guide sleeve 4 and can slide back and forth along the up and down direction relative to the guide sleeve 4. The top end of the guide shaft 5 can be connected to the top seat 1, and the connection method can be hinged or the like.

[0050] When in use, the overall height of the guide shaft 5 and the guide sleeve 4 can be adjusted by sliding the guide shaft 5 relative to the guide sleeve 4, and then the height of the top seat 1 can be adjusted, thereby meeting the need to adjust the height position of the scraper head 300.

[0051] The positioning member passes through the guide sleeve 4 and the guide shaft 5 to position the guide shaft 5 at a position after the sliding adjustment relative to the guide sleeve 4. For example, the positioning member may be a pin, etc., and both the guide sleeve 4 and the guide shaft 5 may be provided with a pin hole. When the guide shaft 5 is adjusted to slide relative to the guide sleeve 4, the positioning member may be inserted into the pin holes on the guide sleeve 4 and the guide shaft 5 at the same time, so that the sliding of the guide shaft 5 relative to the guide sleeve 4 can be locked by the blocking of the positioning member, thereby realizing the positioning of the height position after the telescopic adjustment.

[0052] The lifting jack 6 passes through the middle plate 3 and is connected between the top seat 1 and the base 2, and the lifting jack 6 is used to drive the top seat 1 to move up and down after the positioning member releases the positioning of the guide shaft 5. Figure 1 and Figure 2 As shown, the lifting jack 6 generally extends in the up-down direction, and the middle plate 3 is also provided with a through hole for the lifting jack 6 to pass through. The outer cylinder of the lifting jack 6 can be arranged between the middle plate 3 and the base 2, and the outer cylinder can be hinged to the base 2. The plunger of the lifting jack 6 is slidably assembled with the outer cylinder, and the plunger can pass through the middle plate 3 and be hinged to the top seat 1. When in use, the top seat 1 can be supported and pulled downward by the extension and contraction of the lifting jack 6, and the upper and lower height positions of the top seat 1 can be adjusted.

[0053] The wheel frame 8 is arranged on the outer peripheral side of the guide sleeve 4 and can slide relative to the guide sleeve 4. The wheel frame 8 is provided with a plurality of rollers 9 for contacting the bottom plate and supporting the base 2 away from the bottom plate of the tunnel. Figure 1 and Figure 2 As shown, the wheel frame 8 can be generally a frame-shaped structure, and the wheel frame 8 can be sleeved on the outer peripheral side of the guide sleeve 4, and the wheel frame 8 can slide in the upper and lower directions relative to the guide sleeve 4. A plurality of rollers 9 can be provided on the outer peripheral side of the wheel frame 8, and the axles of the plurality of rollers 9 can be arranged in parallel.

[0054] The wheel frame jack 7 is connected between the middle plate 3 and the wheel frame 8, and the wheel frame jack 7 is used to drive the wheel frame 8 to move up and down. Figure 1 and Figure 2 As shown, the outer cylinder of the wheel frame jack 7 can be hinged to the middle plate 3, and the live column of the wheel frame jack 7 can be hinged to the wheel frame 8. When in use, the upper and lower positions of the wheel frame 8 can be adjusted by the extension and contraction of the wheel frame jack 7. For example, when the wheel frame jack 7 is retracted, the wheel frame 8 can move up. At this time, the multiple rollers 9 on the wheel frame 8 can be separated from the roadway floor, and the base 2 can directly contact the roadway floor. Figure 2 shown.

[0055] When the wheel frame jack 7 is extended, the wheel frame 8 can move downward. At this time, the multiple rollers 9 on the wheel frame 8 can be supported on the tunnel floor, and the base 2 can be separated from the tunnel floor under the supporting action of the rollers 9, so that the scraper pad 100 can be rolled on the tunnel floor by means of the multiple rollers 9.

[0056] The scraper pad frame 100 of the embodiment of the present invention can move the multiple rollers 9 downward and contact with the tunnel floor when it needs to be pushed, so that the scraper pad frame 100 can be rolled and moved, avoiding the situation in the prior art where the base 2 is easily touched when directly in contact with the tunnel floor, and further avoiding the situation where the scraper head 300 is easily skewed and offset due to the deformation of the base 2, thereby ensuring the overall pushing efficiency and reliability.

[0057] In some embodiments, the guide shaft 5 is ball-jointed to the top seat 1, the top end of the lifting jack 6 is pivotally assembled with the top seat 1, the bottom end of the lifting jack 6 is pivotally assembled with the base 2, and the pivot axes at both ends of the lifting jack 6 are arranged in parallel.

[0058] For example, one of the top of the guide shaft 5 and the bottom center of the top seat 1 can be provided with a ball socket, and the other can be provided with a sphere, and the sphere can fit in the ball socket. The top and bottom ends of the lifting jack 6 can be respectively pivotally assembled with the top seat 1 and the base 2 through corresponding pivots, and the pivots of the top and bottom ends of the lifting jack 6 can generally extend along the front-to-back direction. As a result, the top seat 1 can not only meet the lifting adjustment, but also have a certain flexibility of swing adjustment, thereby facilitating the assembly with the scraper head 300 and improving the adaptability of the connection.

[0059] In some embodiments, the top end of the wheel frame jack 7 and the middle plate 3 are pivotally assembled, the bottom end of the wheel frame jack 7 and the base 2 are pivotally assembled, the pivot axes at both ends of the wheel frame jack 7 are arranged in parallel, and the pivot axes at both ends of the lifting jack 6 and the pivot axes at both ends of the wheel frame jack 7 are arranged vertically.

[0060] For example, Figure 1 and Figure 2 As shown, the wheel frame jack 7 can be arranged between the middle plate 3 and the base 2, the top end of the wheel frame jack 7 can be pivotally connected to the middle plate 3 through a pivot, the bottom end of the wheel frame jack 7 can also be pivotally connected to the base 2 through a pivot, and the pivots at the top and bottom ends of the wheel frame jack 7 can generally extend along the left and right directions.

[0061] Thus, the lifting jack 6 and the wheel frame jack 7 can be arranged substantially in a mirror-symmetrical manner, which is beneficial to improving the balance of the overall structural distribution and the stability of use.

[0062] In some embodiments, Figure 1 and Figure 2As shown, there are two lifting jacks 6 and two wheel frame jacks 7, and the two lifting jacks 6 are relatively arranged in a first direction perpendicular to the vertical direction, wherein the first direction can be the front-to-back direction, and the two wheel frame jacks 7 are relatively arranged in a second direction perpendicular to the vertical direction, wherein the second direction can be the left-to-right direction, and the first direction is perpendicular to the second direction, and the two lifting jacks 6 and the two wheel frame jacks 7 are both arranged on the circumferential side of the guide sleeve 4 and alternately arranged along the circumference of the guide sleeve 4.

[0063] In some embodiments, the top seat 1 is provided with a plurality of first ear plates 11, the plurality of first ear plates 11 are arranged at intervals in the first direction, and the top seat 1 is pivotally assembled with the scraper head 300 through the plurality of first ear plates 11, and the pivot axis of the first ear plates 11 and the scraper head 300 extends along the first direction.

[0064] For example, Figure 1 and Figure 2 As shown, two first ear plates 11 may be provided, one of which may be provided at the front edge of the top seat 1, and the other may be provided at the rear edge of the top seat 1, and the heights of the two first ear plates 11 may first increase and then decrease from left to right. A through hole for the pivot to pass through may be provided at the middle of each first ear plate 11, and the through hole passes through the first ear plate 11 along the front-to-back direction.

[0065] Both ends of the lifting jack 6 are respectively pivotally assembled with the top seat 1 and the base 2 through the second ear plate 61. Figure 1 and Figure 2 As shown, the bottom side of the top seat 1 and the top side of the base 2 can be provided with a second ear plate 61, the top end of the lifting jack 6 can be clamped between the two second ear plates 61 and pivotally assembled with the two second ear plates 61 at the same time, and the bottom end of the lifting jack 6 can also be clamped between the two second ear plates 61 and pivotally assembled with the two second ear plates 61.

[0066] Both ends of the wheel frame jack 7 are respectively pivotally assembled with the middle plate 3 and the base 2 through the third ear plate 71. Figure 1 and Figure 2 As shown, the bottom side of the middle plate 3 and the top side of the base 2 can be provided with a third ear plate 71, the top end of the wheel frame jack 7 can be clamped between the two third ear plates 71 and pivotally assembled with the two third ear plates 71 at the same time, and the bottom end of the wheel frame jack 7 can also be clamped between the two third ear plates 71 and pivotally assembled with the two third ear plates 71.

[0067] On the one hand, the structural stability of the assembly and the structural strength of the pivot assembly are ensured, and on the other hand, since the pivot axis of the second ear plate 61 and the pivot axis of the third ear plate 71 are arranged vertically, the lifting jack 6 and the wheel frame jack 7 can form complementary limit constraints, that is, the connection between the second ear plate 61 and the lifting jack 6 can limit the position of the top seat 1 in the front and rear directions, while the connection between the middle plate 3 and the wheel frame jack 7 can limit the displacement of the middle plate 3 in the left and right directions, thereby fully ensuring the stability of the structure.

[0068] In some embodiments, the wheel frame 8 includes a frame portion 81 and a plurality of connecting portions 82. The frame portion 81 is sleeved on the outer peripheral side of the guide sleeve 4 and can slide up and down relative to the guide sleeve 4. The plurality of connecting portions 82 are arranged on the peripheral side of the frame portion 81 and are arranged at intervals along the circumference of the frame portion 81. The plurality of rollers 9 are correspondingly assembled on the outer ends of the plurality of connecting portions 82. The second ear plate 61 and the third ear plate 71 are both located between two adjacent connecting portions 82.

[0069] For example, Figure 1 As shown, the frame 81 can be generally in the shape of a square frame, and the frame 81 can be slidably assembled on the outer peripheral side of the guide sleeve 4, and the connecting portion 82 can be in the shape of a straight rod, and there can be four connecting portions 82, and the four connecting portions 82 can be respectively arranged at the four corners of the frame 81, and each connecting portion 82 can extend along the left and right directions, wherein two connecting portions 82 can be arranged on the left side of the frame 81, and the remaining two connecting portions 82 can be arranged on the right side of the frame 81. The above-mentioned rollers 9 can be provided with four, and the four rollers 9 can be rotatably assembled on the outer ends of the four connecting portions 82 respectively. As a result, the overall structure of the wheel frame 8 is simplified, and the assembly of the rollers 9 is also convenient.

[0070] In some embodiments, the guide sleeve 4 is provided with a plurality of first holes, which are arranged at intervals along the extension direction of the guide sleeve 4, and the guide shaft 5 is provided with a plurality of second holes, which are arranged at intervals along the extension direction of the guide shaft 5, wherein the extension directions of the guide sleeve 4 and the guide shaft 5 can both be up and down directions, and the positioning piece is simultaneously inserted into a first hole and a second hole to realize the positioning of the guide shaft 5.

[0071] The horizontal length dimension of the aperture of the first hole is greater than the vertical height dimension of the aperture of the first hole, the horizontal length dimension of the aperture of the second hole is greater than the vertical height dimension of the aperture of the second hole, and the horizontal width dimension of the positioning member is greater than the vertical thickness dimension of the positioning member.

[0072] Specifically, the length dimensions of the first hole and the second hole can both be dimensions in the left-right direction, the length dimension of the first hole is greater than the height dimension of the first hole, and the length dimension of the second hole is also greater than the height dimension of the second hole. The positioning member as a whole can be a flat columnar structure, and the width dimension of the positioning member in the left-right direction is greater than the thickness dimension of the positioning member. Since the guide sleeve 4 and the guide shaft 5 need to have a high shear resistance, this structural arrangement fully meets the use requirements of shear resistance.

[0073] In some embodiments, a flange is provided at the top of the guide sleeve 4, the guide sleeve 4 is connected to the bottom of the middle plate 3 through the flange, and the guide shaft 5 passes through the flange. For example, the flange can be welded and fixed to the top of the guide sleeve 4, the flange can be generally annular, and the flange can be connected and fixed to the middle plate 3 by screws, bolts, etc.

[0074] The thin coal seam working face equipment according to an embodiment of the present invention is described below.

[0075] The thin coal seam working face equipment of the embodiment of the present invention includes a scraper pad frame 100, the scraper pad can be the scraper pad described in any of the above embodiments, and the thin coal seam working face scraper pad frame 100 is arranged in a tunnel connected to the working face, the top plate of the tunnel is flush with the top plate of the working face, and the bottom plate of the tunnel is lower than the bottom plate of the working face. Figure 3 As shown, the tunnel can specifically be a transport tunnel, the top plate of the tunnel is flush with the top plate of the working surface, and the bottom plate of the tunnel is lower than the bottom plate of the working surface.

[0076] Thus, a step can be formed between the tunnel floor and the working surface floor, so that the subsequent transfer machine 200 and the above-mentioned cushion frame will be lower than the scraper conveyor after being arranged, which is convenient for installation and arrangement. Secondly, the scraper conveyor does not need to be raised as a whole, so that the scraper conveyor is roughly at the same level, avoiding the need to destroy the top plate when raising it, thereby reducing safety accidents caused by the destruction of the top plate.

[0077] Since the scraper conveyor is avoided from being lifted, the coal mining machine does not need to climb a slope, thereby avoiding the need to increase the load of the coal mining machine. Secondly, it also avoids the situation where some bottom coal cannot be recovered and mined during lifting, thereby improving the overall mining rate and resource recovery rate.

[0078] In some embodiments, Figure 3 and Figure 4 As shown, the thin coal seam working face equipment includes a scraper conveyor, a transfer machine 200 and an end hydraulic support 400.

[0079] The scraper conveyor includes a scraper head 300 , which is arranged in the tunnel. The extension direction of the scraper head 300 is arranged perpendicular to the working face. The thin coal seam working face scraper pad 100 is supported and fixed on the bottom of the scraper head 300 .

[0080] The transfer machine 200 is arranged in the tunnel and is located on the side of the thin coal seam scraper frame 100 away from the working face, that is, the transfer machine 200 is arranged on the right side of the frame. The transfer machine 200 is lower than the scraper conveyor and is used to receive the coal and rock dropped from the scraper conveyor.

[0081] like Figure 4 As shown, the end hydraulic support 400 is arranged in the lane and connected to the rear of the transfer machine 200. For example, the push jack of the end hydraulic support 400 can be connected to the tail of the transfer machine 200.

[0082] When the end hydraulic support 400 pushes the transfer machine 200 forward, the wheel frame jack 7 drives the wheel frame 8 to move downward. Figure 1 As shown, a plurality of rollers 9 are directly supported on the tunnel floor, while the base 2 is separated from the tunnel floor, and the scraper pad frame 100 can roll and move along the tunnel floor under the action of the rollers 9.

[0083] When the end hydraulic support 400 is pulled forward, the wheel frame jack 7 drives the wheel frame 8 to move upward. Figure 2 As shown, the base 2 of the scraper conveyor support frame 100 is in close contact with the tunnel floor, thereby increasing the friction effect and ensuring the overall structural stability of the scraper conveyor, the transfer machine 200 and the support frame.

[0084] A specific example of the scraper pad frame 100 according to the embodiment of the present invention is described below.

[0085] The scraper support frame 100 is composed of a top seat 1, a base 2, a middle plate 3, a wheel frame 8, a lifting jack 6, a wheel frame jack 7 and the like.

[0086] Two large ear plates (first ear plates 11) are designed on the front and rear edges of the upper part of the top seat 1 for connecting with the scraper head 300; two groups of small ear plates (second ear plates 61) are designed on the front and rear of the lower part of the top seat 1 for connecting with the top of the lifting jack 6; a guide shaft 5 with a socket (second hole) is designed in the middle of the lower part of the top seat 1, and the guide shaft 5 is used to cooperate with the guide sleeve 4 on the base 2, so as to realize the guidance of up and down lifting.

[0087] Two groups of small ear plates (second ear plates 61) are designed at the front and rear of the upper part of the base 2, which are used to connect the top of the lifting jack 6; a guide sleeve 4 with a plug hole (first hole) is designed in the middle of the lower part of the base 2, which is used to cooperate with the guide shaft 5 on the top seat 1 to achieve the guidance of up and down lifting; a flange is designed on the upper surface of the guide sleeve 4 for connecting with the middle plate 3.

[0088] There is a square hole in the middle of the middle plate 3 to make room for the guide shaft 5 to move; a circle of bolt holes are designed on the edge of the square hole to connect with the flange holes on the guide sleeve 4, so that the middle plate 3 is connected to the base 2; two groups of small ear plates (third ear plates 71) are designed on the left and right sides of the lower surface of the middle plate 3 to connect to the top of the wheel frame jack 7.

[0089] A square sleeve (frame 81) is provided in the middle of the wheel frame 8, which cooperates with the outer surface of the guide sleeve 4 of the base 2 to realize the up and down movement of the wheel frame 8; the guide sleeve 4 of the wheel frame 8 is designed with two groups of small ear plates on the left and right to connect the bottom end of the wheel frame jack 7; four high-strength wheels are installed around the square sleeve of the wheel frame 8, which can contact the ground after the wheel frame 8 is lowered, thereby realizing the rolling contact between the scraper pad frame 100 and the bottom plate.

[0090] The lifting jack 6 connects the base 2 and the top seat 1 , and the extension and retraction of the lifting jack 6 realize the rising and lowering of the top seat 1 .

[0091] The wheel frame jack 7 connects the middle plate 3 and the wheel frame 8, and the extension and contraction of the wheel frame jack 7 realize the rise and fall of the wheel frame 8.

[0092] When the tunnel equipment is pushed, the wheel frame 8 is lowered, the entire pad frame is lifted up, and the four wheels on the wheel frame are in contact with the bottom plate. At this time, the end hydraulic support 400 pushes the scraper pad frame 100 to greatly improve the efficiency and make the push smooth. When pulling the frame, the wheel frame 8 is retracted. At this time, the end hydraulic support 400 pushes the bottom surface of the scraper pad frame 100 to contact the bottom plate, increasing the friction force, which is conducive to pulling the frame.

[0093] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0094] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0095] In the present invention, unless otherwise clearly specified and 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 one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0096] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0097] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0098] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A scraper support for a thin coal seam working face, characterized in that: include: A top seat and a base, wherein the top seat is arranged above the base, and the top seat is used to be connected to the scraper head; A middle plate, the middle plate being arranged between the top seat and the base; A guide sleeve and a guide shaft, wherein the guide sleeve is fixedly connected between the middle plate and the base, the guide shaft passes through the middle plate and is slidably assembled in the guide sleeve, and the guide shaft is connected to the top seat; a positioning member, the positioning member passing through the guide sleeve and the guide shaft to position the guide shaft at a position adjusted relative to the guide sleeve by sliding; A lifting jack, the lifting jack passes through the middle plate and is connected between the top seat and the base, and the lifting jack is used to drive the top seat to move up and down after the positioning member releases the positioning of the guide shaft; A wheel frame, the wheel frame is arranged on the outer peripheral side of the guide sleeve and is slidable relative to the guide sleeve, and the wheel frame is provided with a plurality of rollers for contacting the bottom plate and supporting the base away from the bottom plate of the tunnel; A wheel frame jack, wherein the wheel frame jack is connected between the middle plate and the wheel frame, and the wheel frame jack is used to drive the wheel frame to move up and down; The guide sleeve is provided with a plurality of first holes, which are arranged at intervals along the extension direction of the guide sleeve; the guide shaft is provided with a plurality of second holes, which are arranged at intervals along the extension direction of the guide shaft; the positioning member is inserted into one of the first holes and one of the second holes at the same time to realize the positioning of the guide shaft; The length dimension of the aperture of the first hole in the horizontal direction is greater than the height dimension of the aperture of the first hole in the vertical direction, the length dimension of the aperture of the second hole in the horizontal direction is greater than the height dimension of the aperture of the second hole in the vertical direction, and the width dimension of the positioning member in the horizontal direction is greater than the thickness dimension of the positioning member in the vertical direction; The top seat is provided with a plurality of first ear plates, and the top seat is pivotally assembled with the scraper head through the plurality of first ear plates; both ends of the lifting jack are pivotally assembled with the top seat and the base respectively through second ear plates; both ends of the wheel frame jack are pivotally assembled with the middle plate and the base respectively through third ear plates, and the pivot axis of the second ear plate and the pivot axis of the third ear plate are arranged vertically.

2. The thin coal seam working face scraper support according to claim 1, characterized in that: The guide shaft is connected to the top seat by a ball joint, the top end of the lifting jack is pivotally assembled with the top seat, the bottom end of the lifting jack is pivotally assembled with the base, and the pivot axes at both ends of the lifting jack are arranged in parallel.

3. The thin coal seam working face scraper support according to claim 2, characterized in that: The top end of the wheel frame jack is pivotally assembled with the middle plate, the bottom end of the wheel frame jack is pivotally assembled with the base, the pivot axes at both ends of the wheel frame jack are arranged in parallel, and the pivot axes at both ends of the lifting jack and the pivot axes at both ends of the wheel frame jack are arranged vertically.

4. The scraper support for thin coal seam working face according to claim 3 is characterized in that: There are two lifting jacks and two wheel frame jacks, the two lifting jacks are arranged relative to each other in a first direction perpendicular to the vertical direction, and the two wheel frame jacks are arranged relative to each other in a second direction perpendicular to the vertical direction, the first direction is perpendicular to the second direction, and the two lifting jacks and the two wheel frame jacks are arranged on the circumferential side of the guide sleeve and are alternately arranged along the circumference of the guide sleeve.

5. The scraper support frame for thin coal seam working face according to claim 4 is characterized in that: A plurality of the first ear plates are spaced apart in the first direction, and a pivot axis of the first ear plates and the scraper head extends along the first direction.

6. The scraper support frame for thin coal seam working face according to claim 5, characterized in that: The wheel frame includes a frame portion and a plurality of connecting portions, wherein the frame portion is sleeved on the outer peripheral side of the guide sleeve and can slide up and down relative to the guide sleeve, the plurality of connecting portions are arranged on the peripheral side of the frame portion and are arranged at intervals along the circumference of the frame portion, the plurality of rollers are correspondingly assembled on the outer ends of the plurality of connecting portions, and the second ear plate and the third ear plate are both located between two adjacent connecting portions.

7. The scraper support for a thin coal seam working face according to any one of claims 1 to 6, characterized in that: A flange is provided at the top of the guide sleeve, the guide sleeve is connected to the lower part of the middle plate through the flange, and the guide shaft passes through the flange.

8. A thin coal seam working face equipment, characterized in that: It comprises a thin coal seam working face scraper pad frame as described in any one of claims 1 to 7 above, wherein the thin coal seam working face scraper pad frame is arranged in a tunnel connected to the working face, the roof of the tunnel is flush with the roof of the working face, and the bottom plate of the tunnel is lower than the bottom plate of the working face.

9. The thin coal seam working face equipment according to claim 8, characterized in that: include: A scraper conveyor, the scraper conveyor comprising a scraper head, the scraper head being arranged in the tunnel, the extension direction of the scraper head being arranged perpendicular to the working face, and the scraper support frame of the thin coal seam working face being supported and fixed at the bottom of the scraper head; A transfer machine, the transfer machine is arranged in the tunnel and located on the side of the thin coal seam scraper frame away from the working surface, the transfer machine is lower than the scraper conveyor and is used to receive the coal and rock dropped from the scraper conveyor; An end hydraulic support, the end hydraulic support is arranged in the lane and connected to the rear of the transfer machine; When the end hydraulic support pushes the transfer machine, the wheel frame jack drives the wheel frame to move downward, and the thin coal seam working face scraper pad moves along the tunnel floor under the action of the roller; When the end hydraulic support is pulled, the wheel frame jack drives the wheel frame to move upward, and the base of the scraper support frame of the thin coal seam working face is in close contact with the bottom plate of the roadway.

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