Low-position coal recovery device for goaf of low-position fully mechanized caving face

Abstract

The utility model relates to the technical field of coal recovery equipment, in particular to a low-position coal recovery device for a goaf of a low-position fully mechanized caving face of a coal mine. Comprising a connecting module, an upper pressing plate, a lower pressing plate, a dragging plate and a plurality of sets of fixing assemblies, each fixing assembly comprises an inserting column, two fixing blocks, two movable blocks, two inclined blocks, a pushing piece, an extrusion arc block and a reset piece, the lower pressing plate is provided with an inserting groove and two fixing grooves, the inserting column is fixedly connected with the upper pressing plate and matched with the inserting groove, the inserting column further penetrates through the dragging plate, and the inserting column is fixedly connected with the upper pressing plate. The inserting column is provided with a cavity, the pushing piece is fixedly connected with the inserting column, the extrusion arc block is connected with the pushing piece, the two movable blocks are both connected with the inserting column in a sliding mode and both penetrate through the cavity, the two inclined blocks are fixedly connected with the corresponding movable blocks respectively and both located in the cavity, and the reset piece is connected with the two inclined blocks respectively. The carriage can be conveniently mounted and dismounted between the upper pressing plate and the lower pressing plate, operation is very convenient, and later replacement is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of coal recovery equipment, in particular to a low-position coal recovery device in a goaf area of ​​a low-position fully mechanized caving working face in a coal mine. Background Art

[0002] At present, in the low-level fully mechanized caving working face of coal mines in my country and the world, due to the limitations of the current coal mining technology and equipment, a lot of coal is lost in the goaf area of ​​the working face. When the coal seam height is about 6 meters, the amount of lost coal accounts for about 5% of the minable amount of the low-level fully mechanized caving working face of the coal mine. It not only wastes resources, but also affects the economic benefits of the enterprise. The coal lost in the goaf area of ​​the fully mechanized caving working face covers the entire goaf. The lost coal is cut with a section in the same direction as the forward direction of the low-level fully mechanized caving working face. The geometric shape of its cross-section is basically composed of a rectangle at the bottom and an isosceles triangle at the top. The height of the rectangle is basically the same as the height of the scraper conveyor at the rear of the low-level fully mechanized caving working face. The length of the base of the isosceles triangle is basically the same as the coal mining step distance of the low-level fully mechanized caving working face, and the base angle of the isosceles triangle is about 45 degrees.

[0003] The prior art patent 200820077219.1 discloses a low-level coal recovery device for the goaf of a low-level fully-mechanized caving working face in a coal mine, which is composed of a connecting plate, connecting ears, upper and lower pressure plates and a drag plate. The connecting plate is fixedly connected to the rear vertical plate of the rear scraper conveyor of the low-level fully-mechanized caving working face, and is connected to the connecting ear through a connecting pin. The connecting ear is fixedly connected to the upper pressure plate, and the upper and lower pressure plates clamp the drag plate through a connecting piece. The connecting piece includes bolts and nuts. When the coal above the bracket falls, it first falls on the drag plate of the recovery device and accumulates. When the accumulation height exceeds the height of the rear vertical surface of the rear scraper conveyor, the fallen coal begins to flow into the rear scraper conveyor and be transported away. When the rear scraper conveyor moves forward, the recovery device and the accumulated coal on the recovery device drag plate also move forward. When the frame is moved and coal is placed again, the coal falling from the top of the support will flow directly along the accumulated coal into the rear scraper conveyor and be transported away, thus avoiding a large amount of coal from the low-level fully-mechanized caving working face being lost into the goaf of the working face, and almost all of the lost coal is recovered.

[0004] However, in the above manner, the carriage is fixed between the upper pressing plate and the lower pressing plate by multiple sets of bolts and nuts, the carriage is easily worn, and it is very inconvenient to replace the carriage later. Utility Model Content

[0005] The purpose of the utility model is to provide a low-level coal recovery device in the goaf of a low-level fully-mechanized caving working face in a coal mine, which solves the problem that the existing drag plate is fixed between an upper pressure plate and a lower pressure plate by multiple sets of bolts and nuts, the drag plate is easily worn, and it is very inconvenient to replace the drag plate at a later stage.

[0006] To achieve the above-mentioned purpose, the utility model adopts a low-level coal recovery device in the goaf of a low-level fully mechanized caving working face in a coal mine, comprising a connecting module, an upper pressing plate, a lower pressing plate, a drag plate and a plurality of fixed components, wherein the upper pressing plate is fixedly connected to the connecting module, the lower pressing plate is located below the lower pressing plate, the drag plate is arranged between the upper pressing plate and the lower pressing plate, the fixed component comprises a plug-in column, two fixed blocks, two movable blocks, two inclined blocks, a pushing member, an extrusion arc block and a reset member, and the lower pressing plate has a plug-in slot and two fixed slots The plug-in column is fixedly connected to the upper pressure plate and adapted to the plug-in groove. The plug-in column also passes through the drag plate. The plug-in column has a cavity. The pushing member is fixedly connected to the plug-in column and is located in the cavity. The extrusion arc block is connected to the pushing member and is located in the cavity. The two movable blocks are both slidably connected to the plug-in column and both pass through the cavity. The two inclined blocks are respectively fixedly connected to the corresponding movable blocks and are both located in the cavity. The reset member is respectively connected to the two inclined blocks.

[0007] Wherein, the reset member comprises two limit blocks and a limit spring, the two limit blocks are respectively fixedly connected to the corresponding inclined blocks, and the two ends of each limit spring are respectively fixedly connected to the two limit blocks.

[0008] Among them, the pushing member includes a fixed plate and an electric push rod, the fixed plate is fixedly connected to the plug-in column and is located in the cavity, the electric push rod is fixedly connected to the fixed plate and passes through the fixed plate, and the extrusion arc block is connected to the output end of the electric push rod.

[0009] Among them, the low-level coal recovery device in the goaf area of ​​the low-level fully-mechanized caving working face of the coal mine also includes two groups of pushing components, and each group of the pushing components is connected to the upper pressure plate and the lower pressure plate respectively.

[0010] Among them, the pushing assembly includes an extrusion block, a movable plate and a return spring, the lower pressure plate has a groove, the movable plate is movably connected to the lower pressure plate and is located in the groove, the return spring is arranged in the groove and is fixedly connected to the movable plate, the extrusion block is fixedly connected to the upper pressure plate and is located below the upper pressure plate, the extrusion block also passes through the drag plate, and the extrusion block is adapted to the groove.

[0011] Wherein, the pushing assembly also includes a guide arc block, which is fixedly connected to the extrusion block and is located on the outer side wall of the extrusion block.

[0012] The invention relates to a low-level coal recovery device for goaf of a coal mine low-level comprehensive caving working face, when the drag plate is replaced, the drag plate is located above the lower pressure plate, and then the lower pressure plate is closely attached to the drag plate, and at the same time, the plurality of plug-in columns on the upper pressure plate pass through the drag plate and enter the plug-in slots of the lower pressure plate respectively, and then the pushing members in the cavity of the plug-in columns are respectively started, and the pushing members drive the extrusion arc block to move downward, and the extrusion arc block will push the two inclined blocks to move, and each inclined block will be forced to drive the movable block to enter the fixed slot of the lower pressure plate, so that the upper pressure plate and the lower pressure plate clamp the drag plate, and when the drag plate is disassembled, the extrusion arc block is reset by the pushing member, and at the same time, the movable block is separated from the fixed slot of the lower pressure plate under the action of the reset member, and then the upper pressure plate and the lower pressure plate are separated. Through the above method, it is realized that the drag plate can be conveniently installed and removed between the upper pressure plate and the lower pressure plate, and the operation is very convenient, which is conducive to later replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0015] Figure 2 It is a cross-sectional view of the overall internal structure of the first embodiment of the utility model.

[0016] Figure 3 The utility model Figure 2 A magnified view of the local structure at A.

[0017] Figure 4 It is a cross-sectional view of the overall internal structure of the second embodiment of the utility model.

[0018] Figure 5 The utility model Figure 4 Enlarged view of the local structure at point B.

[0019] 101-connecting module, 102-upper pressure plate, 103-lower pressure plate, 104-drag plate, 105-plug-in column, 106-fixed slot, 107-movable block, 108-oblique block, 109-extrusion arc block, 110-limiting block, 111-limiting spring, 112-fixed plate, 113-electric push rod, 114-cavity, 115-plug-in slot, 201-extrusion block, 202-movable plate, 203-reset spring, 204-guide arc block, 205-groove. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] First embodiment

[0022] See also Figure 1 to Figure 3 ,in Figure 1 is a schematic diagram of the overall structure of the first embodiment, Figure 2 is a cross-sectional view of the overall internal structure of the first embodiment, Figure 3 yes Figure 2 A magnified view of the local structure at A.

[0023] The utility model provides a low-position coal recovery device for goaf of low-position fully mechanized caving working face in a coal mine: comprising a connection module 101, an upper pressure plate 102, a lower pressure plate 103, a drag plate 104 and multiple groups of fixed components, wherein the fixed components comprise a plug-in column 105, two fixed blocks, two movable blocks 107, two inclined blocks 108, a pusher, an extrusion arc block 109 and a reset member, wherein the reset member comprises two limit blocks 110 and a limit spring 111, and the pusher comprises a fixed plate 112 and an electric push rod 113. The above-mentioned scheme solves the problem that the existing drag plate 104 is fixed between the upper pressure plate 102 and the lower pressure plate 103 by multiple groups of bolts and nuts, the drag plate 104 is easy to wear, and it is very inconvenient to replace the drag plate 104 in the later stage.

[0024] According to this specific embodiment, the upper pressure plate 102 is fixedly connected to the connecting module 101, the lower pressure plate 103 is located below the lower pressure plate 103, the drag plate 104 is arranged between the upper pressure plate 102 and the lower pressure plate 103, the connecting module 101 is connected to the equipment, and the upper pressure plate 102 and the lower pressure plate 103 are arranged on the connecting module 101. By arranging the drag plate 104 between the upper pressure plate 102 and the lower pressure plate 103, when the coal above the bracket falls, it first falls on the drag plate 104 and accumulates. When the stacking height exceeds the rear vertical height of the rear scraper conveyor, the fallen coal begins to flow into the rear scraper conveyor and be transported away. When the rear scraper conveyor moves forward, the accumulated coal on the drag plate 104 also moves forward. When the frame is moved and the coal is placed again, the coal falling from the top of the frame will flow directly along the accumulated coal into the rear scraper conveyor and be transported away, thus avoiding a large amount of coal from the low-level comprehensive caving working face being lost into the goaf of the working face, and making almost all the lost coal recovered.

[0025] The lower pressing plate 103 has a plug-in slot 115 and two fixing slots 106, the plug-in column 105 is fixedly connected to the upper pressing plate 102 and matched with the plug-in slot 115, the plug-in column 105 also passes through the drag plate 104, the plug-in column 105 has a cavity 114, the pusher is fixedly connected to the plug-in column 105 and is located in the cavity 114, the extrusion arc block 109 is connected to the pusher and is located in the cavity 114, and the two movable The blocks 107 are slidably connected to the plug-in column 105 and penetrate the cavity 114. The two inclined blocks 108 are fixedly connected to the corresponding movable blocks 107 and are located in the cavity 114. The reset members are connected to the two inclined blocks 108 respectively. When the carriage 104 is replaced, the carriage 104 is placed above the lower pressure plate 103, and then the lower pressure plate 103 is pressed against the carriage 104. At the same time, the plurality of the upper pressure plate 102 on the upper pressure plate 102 are fixedly connected to the corresponding movable blocks 107 and are located in the cavity 114. The reset members are connected to the two inclined blocks 108 respectively. The plug-in column 105 passes through the drag plate 104 and enters the plug-in slot 115 of the lower pressure plate 103 respectively, and then the pusher in the cavity 114 of the plug-in column 105 is started respectively, and the pusher drives the extrusion arc block 109 to move downward, and the extrusion arc block 109 will push the two inclined blocks 108 to move, and each inclined block 108 will drive the movable block 107 to enter the fixed slot 106 of the lower pressure plate 103 under force, so that the upper pressure plate 102 and the The lower pressure plate 103 clamps the drag plate 104. When the drag plate 104 is disassembled, the extrusion arc block 109 is reset by the pushing member. At the same time, the movable block 107 is disengaged from the fixed groove 106 of the lower pressure plate 103 under the action of the reset member, and then the upper pressure plate 102 and the lower pressure plate 103 are separated. Through the above method, the drag plate 104 can be easily installed and removed between the upper pressure plate 102 and the lower pressure plate 103. The operation is very convenient and is conducive to later replacement.

[0026] Secondly, the two limit blocks 110 are fixedly connected to the corresponding inclined blocks 108 respectively, and the two ends of each limit spring 111 are fixedly connected to the two limit blocks 110 respectively. Each inclined block 108 is connected to the limit block 110 for movement. The limit spring 111 is arranged between the two inclined blocks 108. The limit spring 111 has a traction effect on the inclined block 108 and expands and contracts with the movement of the inclined block 108.

[0027] At the same time, the fixed plate 112 is fixedly connected to the plug-in column 105 and is located in the cavity 114. The electric push rod 113 is fixedly connected to the fixed plate 112 and passes through the fixed plate 112. The extrusion arc block 109 is connected to the output end of the electric push rod 113. The fixed plate 112 fixes and supports the electric push rod 113 in the cavity 114, and the output end of the electric push rod 113 drives the extrusion arc block 109 to move in the cavity 114.

[0028] When the carriage 104 is replaced, the carriage 104 is positioned above the lower pressing plate 103, and then the lower pressing plate 103 is pressed against the carriage 104. At the same time, the plurality of plug-in columns 105 on the upper pressing plate 102 penetrate the carriage 104 and respectively enter the plug-in slots 115 of the lower pressing plate 103. Then, the electric push rods 113 in the cavities 114 of the plug-in columns 105 are respectively started. The electric push rods 113 drive the extrusion arc block 109 to move downward, and the extrusion arc block 109 pushes the two inclined blocks 108 to move, wherein the limit springs 111 are stretched as the inclined blocks 108 move, and each of the The force on the inclined block 108 will drive the movable block 107 to enter the fixed groove 106 of the lower pressure plate 103, so that the upper pressure plate 102 and the lower pressure plate 103 clamp the slide plate 104. When the slide plate 104 is disassembled, the extrusion arc block 109 is reset by the electric push rod 113, and at the same time, the movable block 107 is disengaged from the fixed groove 106 of the lower pressure plate 103 under the action of the limit spring 111, and then the upper pressure plate 102 and the lower pressure plate 103 are separated. In the above manner, the slide plate 104 can be easily installed and removed between the upper pressure plate 102 and the lower pressure plate 103, and the operation is very convenient, which is conducive to later replacement.

[0029] Second embodiment

[0030] See also Figure 4 and Figure 5 ,in Figure 4 is a cross-sectional view of the overall internal structure of the second embodiment, Figure 5 yes Figure 4 Enlarged view of the local structure at point B.

[0031] On the basis of the first embodiment, a low-level coal recovery device for the goaf of a low-level fully-mechanized caving working face in a coal mine of the utility model also includes two groups of pushing components, and the pushing components include an extrusion block 201, a movable plate 202, a return spring 203 and a guide arc block 204.

[0032] Each group of the pushing components is connected to the upper pressure plate 102 and the lower pressure plate 103 respectively. By setting the pushing components, when the drag plate 104 is replaced, the upper pressure plate 102 is disconnected from the lower pressure plate 103, and the upper pressure plate 102 is quickly separated from the lower pressure plate 103 by using the pushing components, so that the drag plate 104 is convenient to replace.

[0033] The lower pressing plate 103 has a groove 205, the movable plate 202 is movably connected to the lower pressing plate 103 and is located in the groove 205, the return spring 203 is arranged in the groove 205 and is fixedly connected to the movable plate 202, the extrusion block 201 is fixedly connected to the upper pressing plate 102 and is located below the upper pressing plate 102, the extrusion block 201 also passes through the carriage 104, and the extrusion block 201 is adapted to the groove 205. When replacing the carriage 104, After the upper pressure plate 102 is disconnected from the lower pressure plate 103, the return spring 203 in the groove 205 of the lower pressure plate 103 is stretched, and the return spring 203 pushes the movable plate 202 to reset, and then the movable plate 202 pushes the extrusion block 201 out of the groove 205, so that the upper pressure plate 102 and the lower pressure plate 103 are quickly separated, and then the drag plate 104 is disassembled for replacement. In the above manner, it is achieved that the drag plate 104 can be further replaced.

[0034] The guide arc block 204 is fixedly connected to the extrusion block 201 and is located on the outer wall of the extrusion block 201. By arranging the guide arc block 204 on the extrusion block 201, the guide arc block 204 has an arc surface, and the extrusion block 201 can conveniently enter the groove 205 of the lower pressure plate 103 through the guide arc block 204.

[0035] When replacing the drag plate 104, the upper pressure plate 102 is disconnected from the lower pressure plate 103. At this time, the return spring 203 in the groove 205 of the lower pressure plate 103 is stretched, and the return spring 203 pushes the movable plate 202 to reset. Then the movable plate 202 pushes the extrusion block 201 out of the groove 205, so that the upper pressure plate 102 and the lower pressure plate 103 are quickly separated, and then the drag plate 104 is disassembled for replacement. Through the above method, the drag plate 104 can be further replaced. In addition, the guide arc block 204 is provided, and the guide arc block 204 has an arc surface. The extrusion block 201 can easily enter the groove 205 of the lower pressure plate 103 through the guide arc block 204.

[0036] The above disclosures are only two preferred embodiments of the present invention, which certainly cannot be used to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

1. A low-level coal recovery device for goaf of a low-level fully mechanized caving working face in a coal mine, comprising a connecting module, an upper pressing plate, a lower pressing plate and a drag plate, wherein the upper pressing plate is fixedly connected to the connecting module, the lower pressing plate is located below the lower pressing plate, and the drag plate is arranged between the upper pressing plate and the lower pressing plate, characterized in that: It also includes multiple groups of fixed components, which include a plug-in column, two fixed blocks, two movable blocks, two inclined blocks, a pushing member, an extrusion arc block and a reset member. The lower pressure plate has a plug-in slot and two fixed slots. The plug-in column is fixedly connected to the upper pressure plate and matched with the plug-in slot. The plug-in column also passes through the drag plate. The plug-in column has a cavity. The pushing member is fixedly connected to the plug-in column and is located in the cavity. The extrusion arc block is connected to the pushing member and is located in the cavity. The two movable blocks are both slidably connected to the plug-in column and both pass through the cavity. The two inclined blocks are respectively fixedly connected to the corresponding movable blocks and are both located in the cavity. The reset member is respectively connected to the two inclined blocks.

2. The low-level coal recovery device for goaf of low-level fully-mechanized caving working face in a coal mine as claimed in claim 1, characterized in that: The reset member comprises two limit blocks and a limit spring. The two limit blocks are respectively fixedly connected to the corresponding inclined blocks, and the two ends of each limit spring are respectively fixedly connected to the two limit blocks.

3. The low-level coal recovery device for goaf of low-level fully-mechanized caving working face in a coal mine as claimed in claim 2, characterized in that: The pushing member includes a fixed plate and an electric push rod, the fixed plate is fixedly connected to the plug-in column and is located in the cavity, the electric push rod is fixedly connected to the fixed plate and passes through the fixed plate, and the extrusion arc block is connected to the output end of the electric push rod.

4. The low-level coal recovery device for goaf of low-level fully-mechanized caving working face in a coal mine as claimed in claim 1, characterized in that: The low-level coal recovery device in the goaf of a low-level fully-mechanized caving working face in a coal mine also includes two groups of pushing components, and each group of the pushing components is connected to the upper pressure plate and the lower pressure plate respectively.

5. The low-level coal recovery device for goaf of low-level fully-mechanized caving working face in a coal mine as claimed in claim 4, characterized in that: The pushing assembly includes an extrusion block, a movable plate and a return spring. The lower pressure plate has a groove. The movable plate is movably connected to the lower pressure plate and is located in the groove. The return spring is arranged in the groove and fixedly connected to the movable plate. The extrusion block is fixedly connected to the upper pressure plate and is located below the upper pressure plate. The extrusion block also passes through the drag plate, and the extrusion block is adapted to the groove.

6. The low-level coal recovery device for goaf of low-level fully-mechanized caving working face in a coal mine as claimed in claim 5, characterized in that: The pushing assembly also includes a guide arc block, which is fixedly connected to the extrusion block and is located on the outer side wall of the extrusion block.

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