Spraying device of front coal caving hydraulic support

Abstract

The utility model discloses a spraying device for a front coal caving hydraulic support, which relates to the technical field of coal mining equipment and is mounted in a front beam box of the front coal caving hydraulic support. The device comprises a fixed seat, the fixed seat is fixedly installed on a telescopic beam of a front coal caving hydraulic support, a guide pipe is clamped on the fixed seat, the front end of the guide pipe penetrates out of the telescopic beam and is provided with a nozzle in a sealed mode, the rear end of the guide pipe is connected with a straight-through part, and the straight-through part is connected with an external water pipe. The device has the beneficial effects that the device has dustproof and dust-falling functions; the spraying device is installed in the box type of the front beam of the hydraulic support, compared with a traditional spraying device, the spraying device can solve the problems that when the spraying device is shielded after a protection side is retracted and the front beam lowers the head to discharge coal, dust removal action cannot be conducted on dropped coal, and the like, and has the advantages of being neat in appearance, safe, reliable, long in service life and the like. The spraying system is not influenced by the withdrawing of the protective plate, and the dust removal effect on the fallen coal can be realized when the coal is placed below the front beam; and the spraying direction is always advanced, so that pedestrians are not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining equipment, in particular to a front coal discharge hydraulic support spray device. Background Art

[0002] With the comprehensive research and discussion of coal caving mining technology and equipment by colleges and universities, scientific research institutions and coal design institutes in my country, the mechanization degree of coal mining has been continuously improved. In the hydraulic support for top coal caving, the mining efficiency has been continuously improved from the initial high-position caving to the middle-position caving, and then to the low-position caving. For some geological conditions with advanced coal seam fissures, poor roof conditions, easy slabs and roof collapse, the effect of low-position top coal caving is not ideal, and the roof management is difficult. In view of the shortcomings of the three coal caving methods, this patent proposes a hydraulic support for caving coal from the front. It solves the problems of poor coal caving effect due to poor geological conditions of coal seams and high cost of using double conveyor equipment.

[0003] In addition, the front beam of the front coal-releasing hydraulic support is compact and short in length. During use, the guardrail is retracted and the front beam is lowered to realize the coal-releasing action. When the guardrail is retracted, the length of the guardrail is basically the same as the length of the front beam, covering the entire front beam. Conventional spray is arranged on the front beam cover plate, which will be shielded by the guardrail plate when the guardrail is retracted. Moreover, due to the short front beam, the working range of the spray nozzle is fan-shaped, which will splash pedestrians. Utility Model Content

[0004] The purpose of the utility model is to provide a front coal discharge hydraulic support spray device in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A front coal-releasing hydraulic support spray device, the device is installed in a front beam box of the front coal-releasing hydraulic support; the device comprises a fixing seat, the fixing seat is fixedly installed on the telescopic beam of the front coal-releasing hydraulic support, a conduit is clamped on the fixing seat, the front end of the conduit passes through the telescopic beam and is sealed with a nozzle, the rear end of the conduit is connected with a straight-through, and the straight-through is connected to an external water pipe;

[0007] The front coal placing hydraulic support comprises a base, a connecting rod mechanism is arranged at the rear side of the base, the upper end of the connecting rod mechanism is connected to a shielding beam, both sides of the lower front end of the shielding beam are rotatably connected to columns, and the lower ends of the columns are hinged on the base; the front end of the shielding beam is hinged to a front beam, a balancing jack is connected between the lower part of the front beam and the lower part of the shielding beam, and the front and rear ends of the balancing jack are respectively hinged to the front beam and the shielding beam; a telescopic beam is inserted at the front end of the front beam, and the telescopic beam is connected to the The front beams are connected by telescopic jacks; a guard plate is hinged at the front end of the telescopic beam, a guard jack is arranged between the lower part of the guard plate and the lower part of the telescopic beam, and the front and rear ends of the guard jack are respectively hinged to the guard plate and the front beam; side guard plates are respectively arranged on both sides of the front beam, the upper edges of the side guard plates are hinged to the front beam, a side push jack is arranged between the lower part of the side guard plate and the lower part of the front beam, and the two ends of the side push jack are respectively hinged to the side guard plate and the front beam.

[0008] Preferably, the fixing seat comprises a U-shaped card and a stopper, and the conduit is fixedly mounted on the telescopic beam via the U-shaped card and the stopper, so that the spray device can perform the extension and retraction action along with the telescopic beam.

[0009] Preferably, the connecting rod mechanism comprises two groups of front and rear connecting rods, and each group of connecting rods is divided into two left and right groups.

[0010] Preferably: the shield beam includes a beam body, and the first connecting shaft and the second connecting shaft are fixedly installed on the lower surface of the rear part of the beam body corresponding to the upper ends of the two groups of connecting rods of the connecting rod mechanism, and the lower surface of the front part of the beam body is provided with a column socket, the upper end of the column is supported in the column socket and is rotatably connected to the beam body through a rotating shaft.

[0011] Preferably: the telescopic beam comprises a flat plate body, a hinge joint hinged to the guard plate is arranged at the front end of the plate body, a main reinforcement is fixedly installed on the lower surface of the plate body, the guard jack is hinged to the main reinforcement, and the telescopic jack is hinged to the plate body.

[0012] Preferably, the hinged parts of the front beam and the shield beam adopt a male-female matching structure.

[0013] Preferably: a pushing mechanism and a bottom lifting mechanism are provided on the base, the pushing mechanism includes a push rod, a pushing seat and a pushing jack, one end of the push rod is connected to the coal mining machine, and the other end is rotatably connected to the pushing seat, the pushing seat slides on the base, and the pushing seat and the base are connected through the pushing jack; the bottom lifting mechanism includes a pressure shaft, a rotating plate and a bottom lifting jack, the rotating plate is arranged on the base corresponding to the positions on both sides of the push rod, the lower middle part of the rotating plate is rotatably connected to the base, a pressure shaft is fixedly installed on the end of the rotating plate close to the conveyor, the pressure shaft extends above the push rod, the end of the rotating plate close to the pushing seat is rotatably connected to the bottom lifting jack, and the bottom lifting jack is rotatably connected to the base at one end away from the rotating plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. It has the functions of dust prevention and dust reduction;

[0016] 2. The spray device is installed inside the box of the front beam of the hydraulic support. Compared with the traditional spray device, the spray device can solve the problem that the spray device is shielded after the guard is retracted and the coal cannot be dusted when the front beam is lowered to place the coal. It has the characteristics of neat appearance, safety and reliability, and long service life;

[0017] 3. The spray system is not affected by the retraction of the guard plate and can achieve dust removal of the fallen coal when the coal is placed under the front beam;

[0018] 4. The spray direction is always ahead and will not affect pedestrians. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 labor.

[0020] Figure 1 It is a structural schematic diagram of a spray device for a front coal discharge hydraulic support described in the utility model.

[0021] Figure 2 The utility model is a schematic diagram of the structure of the front coal discharge hydraulic support spray device in use state.

[0022] Figure 3 It is a right side view of the front coal placing hydraulic support described in the utility model.

[0023] Figure 4It is a partial three-dimensional structural schematic diagram of the front coal discharge hydraulic support described in the utility model.

[0024] Figure 5 It is a bottom view of the shielding beam of the front coal placing hydraulic support described in the utility model.

[0025] Figure 6 It is a bottom view of the front beam of the front coal placing hydraulic support described in the utility model.

[0026] Figure 7 It is a bottom view of the telescopic beam of the front coal placing hydraulic support described in the utility model.

[0027] The following are the descriptions of the reference numerals:

[0028] 1. Base; 2. Connecting rod mechanism; 3. Protective beam; 31. Beam body; 32. Column socket; 33. First connecting shaft; 34. Second connecting shaft; 35. Connecting ear; 4. Column; 5. Front beam; 6. Balance jack; 7. Telescopic beam; 71. Plate body; 72. Hinge joint; 73. Main reinforcement; 8. Guard plate; 9. Guard jack; 10. Telescopic jack; 11. Side guard plate; 12. Side push jack; 13. Conduit; 14. Nozzle; 15. Straight-through. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] The utility model is further described below in conjunction with the accompanying drawings:

[0032] like Figure 1 As shown, a spray device of a front coal-releasing hydraulic support is installed in a front beam box of the front coal-releasing hydraulic support; the device includes a fixed seat, the fixed seat is fixedly installed on the telescopic beam of the front coal-releasing hydraulic support, a conduit 13 is clamped on the fixed seat, the front end of the conduit 13 passes through the telescopic beam and is sealed with a nozzle 14, the rear end of the conduit 13 is connected with a straight-through 15, and the straight-through 15 is connected to an external water pipe; the fixed seat includes a U-shaped card and a block, the conduit 13 is fixedly installed on the telescopic beam through the U-shaped card and the block, and the spray device can be extended and retracted with the telescopic beam.

[0033] like Figure 1-Figure 7 As shown, the front coal discharge hydraulic support includes a base 1, a connecting rod mechanism 2 is arranged at the rear side of the base 1, the upper end of the connecting rod mechanism 2 is connected to a shielding beam 3, both sides of the lower front end of the shielding beam 3 are rotatably connected to columns 4, and the lower ends of the columns 4 are hinged on the base 1; the front end of the shielding beam 3 is hinged to a front beam 5, and a balancing jack 6 is connected between the lower part of the front beam 5 and the lower part of the shielding beam 3, and the front and rear ends of the balancing jack 6 are respectively hinged to the front beam 5 and the shielding beam 3 to ensure a certain lifting force, so that the front beam 5 can be extended to support the roof and retracted to discharge coal; a telescopic beam 7 is inserted at the front end of the front beam 5, and a telescopic beam 7 is connected to the front beam 5 Through the connection of the telescopic jack 10, the exposed roof can be supported in time; a guard plate 8 is hinged at the front end of the telescopic beam 7, and a guard jack 9 is arranged between the lower part of the guard plate 8 and the lower part of the telescopic beam 7, and the front and rear ends of the guard jack 9 are respectively hinged to the guard plate 8 and the front beam 5, which can support the coal wall and prevent the coal from spalling; side guard plates 11 are respectively arranged on both sides of the front beam 5, and the upper edges of the side guard plates 11 are hinged to the front beam 5, and side push jacks 12 are arranged between the lower part of the side guard plates 11 and the lower part of the front beam 5, and the two ends of the side push jacks 12 are respectively hinged to the side guard plates 11 and the front beam 5, and can move left and right to prevent leakage of gangue.

[0034] like Figure 4 As shown, the connecting rod mechanism 2 includes two groups of connecting rods in the front and rear, and each group of connecting rods is divided into two left and right parts; the shielding beam 3 includes a beam body 31, and the first connecting shaft 33 and the second connecting shaft 34 are fixedly installed on the lower surface of the rear part of the beam body 31 corresponding to the upper ends of the two groups of connecting rods of the connecting rod mechanism 2, and a column socket 32 ​​is provided on the lower surface of the front part of the beam body 31. The upper end of the column 4 is supported in the column socket 32 ​​and is rotatably connected to the beam body 31 through a rotating shaft. The column 4 is supported in the column socket 32 ​​to form a support effect on the top plate, thereby dispersing the force on the rotating shaft.

[0035] like Figure 6-Figure 7As shown, the telescopic beam 7 includes a flat plate body 71, a hinge joint 72 hinged to the guard plate 8 is provided at the front end of the plate body 71, a main reinforcement 73 is fixedly installed on the lower surface of the plate body 71, the guard jack 9 is hinged on the main reinforcement 73, and the telescopic jack 10 is hinged on the plate body 71.

[0036] like Figure 2-Figure 3 As shown, the hinged parts of the front beam 5 and the shield beam 3 adopt a male-female matching structure in a concave-convex structure to reduce the gap between the hinged parts of the front beam 5 and the shield beam 3 to prevent the retraction of the front beam 5 from being affected by gangue being caught during the coal placing process.

[0037] like Figure 2 As shown, a pushing mechanism and a bottom lifting mechanism are provided on the base 1, the pushing mechanism includes a push rod, a pushing seat and a pushing jack, one end of the push rod is connected to the coal mining machine, and the other end is rotatably connected to the pushing seat, the pushing seat slides on the base 1, and the pushing seat and the base 1 are connected through the pushing jack; the bottom lifting mechanism includes a pressure shaft, a rotating plate and a bottom lifting jack, the rotating plate is arranged on the base 1 at positions corresponding to both sides of the push rod, the lower middle part of the rotating plate is rotatably connected to the base 1, a pressure shaft is fixedly installed on the end of the rotating plate close to the conveyor, the pressure shaft extends to the top of the push rod, the end of the rotating plate close to the pushing seat is rotatably connected to the bottom lifting jack, and the end of the bottom lifting jack away from the rotating plate is rotatably connected to the base 1.

[0038] Working principle: When the coal mining machine finishes cutting a piece of coal, the hydraulic support pushes the push rod through the push jack to push the conveyor out a step, the hydraulic support column 4 shrinks, the front beam 5 drops, the bottom lifting mechanism lifts the bottom, and the push jack shrinks to pull the frame. After the hydraulic support is in place, the front beam 5 swings down a certain angle, and the coal falls into the scraper groove of the conveyor through the front end of the front beam 5 to realize the coal release action; the hydraulic support pushes the pressure plate to rotate through the bottom lifting jack with the push rod as the fulcrum, controls the extension and retraction of the bottom lifting jack to realize the lifting and falling of the front foot of the base 1, and then controls the push jack to complete the forward movement of the hydraulic support.

[0039] The selection and design of the three-machine matching is carried out based on the mine's coal seam geological conditions, roof conditions, floor conditions, working face parameters, inlet and return air chute parameters, and the "Coal Mine Safety Regulations".

[0040] The base 1, the connecting rod mechanism 2, the connecting ear 35, the column 4, the balancing jack 6, the guard jack 9, the telescopic jack 10 and the side thrust jack 12 are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods, so they will not be described in detail here.

[0041] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements shall fall within the scope of the utility model to be protected.

Claims

1. A front coal-laying hydraulic support spray device, characterized in that: The device is installed in the front beam box of the front coal-discharging hydraulic support; the device comprises a fixing seat, the fixing seat is fixedly installed on the telescopic beam of the front coal-discharging hydraulic support, a guide tube (13) is clamped on the fixing seat, the front end of the guide tube (13) passes through the telescopic beam and is sealed with a nozzle (14), the rear end of the guide tube (13) is connected to a straight-through (15), and the straight-through (15) is connected to an external water pipe; The front coal discharge hydraulic support comprises a base (1), a connecting rod mechanism (2) is arranged at the rear side of the base (1), the upper end of the connecting rod mechanism (2) is connected to a shielding beam (3), both sides of the lower front end of the shielding beam (3) are rotatably connected to columns (4), the lower ends of the columns (4) are hinged on the base (1); the front end of the shielding beam (3) is hinged to a front beam (5), a balancing jack (6) is connected between the lower part of the front beam (5) and the lower part of the shielding beam (3), the front and rear ends of the balancing jack (6) are respectively hinged to the front beam (5) and the shielding beam (3); a telescopic beam (7) is inserted at the front end of the front beam (5), the telescopic beam (7) and the front beam (3) are connected to each other. (5) are connected by a telescopic jack (10); a guard plate (8) is hingedly connected to the front end of the telescopic beam (7); a guard plate (9) is arranged between the lower part of the guard plate (8) and the lower part of the telescopic beam (7); the front and rear ends of the guard plate (9) are respectively hinged to the guard plate (8) and the front beam (5); side guard plates (11) are respectively arranged on both sides of the front beam (5); the upper edges of the side guard plates (11) are hingedly connected to the front beam (5); a side push jack (12) is arranged between the lower part of the side guard plate (11) and the lower part of the front beam (5); the two ends of the side push jack (12) are respectively hinged to the side guard plate (11) and the front beam (5).

2. A front coal discharge hydraulic support spray device according to claim 1, characterized in that: The fixing seat comprises a U-shaped card and a stopper, and the conduit (13) is fixedly mounted on the telescopic beam via the U-shaped card and the stopper, so that the spray device can perform an extension and retraction action along with the telescopic beam.

3. The front coal discharge hydraulic support spray device according to claim 1 is characterized in that: The connecting rod mechanism (2) comprises two groups of front and rear connecting rods, and each group of connecting rods is divided into two left and right groups.

4. The front coal discharge hydraulic support spray device according to claim 2 is characterized in that: The shielding beam (3) comprises a beam body (31), a first connecting shaft (33) and a second connecting shaft (34) being respectively fixedly mounted on the lower surface of the rear portion of the beam body (31) at positions corresponding to the upper ends of two groups of connecting rods of the connecting rod mechanism (2), a column socket (32) being arranged on the lower surface of the front portion of the beam body (31), the upper end of the upright column (4) being supported in the column socket (32) and being rotatably connected to the beam body (31) via a rotating shaft.

5. The front coal discharge hydraulic support spray device according to claim 1, characterized in that: The telescopic beam (7) comprises a flat plate body (71), a hinge joint (72) hinged to the side guard plate (8) being arranged at the front end of the plate body (71), a main rib (73) being fixedly mounted on the lower surface of the plate body (71), the side guard jack (9) being hinged to the main rib (73), and the telescopic jack (10) being hinged to the plate body (71).

6. The front coal discharge hydraulic support spray device according to claim 1, characterized in that: The hinged parts of the front beam (5) and the shield beam (3) adopt a male-female matching structure.

7. The front coal discharge hydraulic support spray device according to claim 1, characterized in that: The base (1) is provided with a pushing mechanism and a bottom lifting mechanism, the pushing mechanism comprising a push rod, a pushing seat and a pushing jack, one end of the push rod is connected to the coal mining machine, and the other end is rotatably connected to the pushing seat, the pushing seat slides on the base (1), and the pushing seat and the base (1) are connected via the pushing jack; the bottom lifting mechanism comprises a pressure shaft, a rotating plate and a bottom lifting jack, the rotating plate is arranged on the base (1) at positions corresponding to both sides of the push rod, the lower middle portion of the rotating plate is rotatably connected to the base (1), a pressure shaft is fixedly installed at one end of the rotating plate close to the conveyor, the pressure shaft extends to the top of the push rod, one end of the rotating plate close to the pushing seat is rotatably connected to the bottom lifting jack, and the end of the bottom lifting jack away from the rotating plate is rotatably connected to the base (1).

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