CN112031851A

CN112031851A - Light hydraulic support for caving coal

Info

Publication number: CN112031851A
Application number: CN202010873656.XA
Authority: CN
Inventors: 张帅; 王鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-12-04

Abstract

The invention relates to the technical field of caving coal, in particular to a light caving coal hydraulic support which comprises a base, an adjusting frame, a crushing mechanism and a driving mechanism, wherein the adjusting frame is arranged on the upper side of the base, the crushing mechanism and the driving mechanism are arranged on the adjusting frame, the crushing mechanism is driven by the driving mechanism, four front hinged supports and two rear hinged supports are arranged on the base, the front hinged supports are respectively hinged with a main jack, a cross slide rail is arranged above the base, the light caving coal hydraulic support is characterized in that four inclined main jacks are arranged below the cross slide rail, the main jack is connected with the cross slide rail in a sliding mode through a first sliding block, two inclined auxiliary jacks are arranged below the cross slide rail, the auxiliary jacks are connected with the cross slide rail in a sliding mode through a second sliding block, and when the main jack and the auxiliary jacks stretch out and draw back, the sliding blocks can be driven to move along the slide rail, thereby causing the positions of the cross slide and the transverse slide to move.

Description

Light hydraulic support for caving coal

Technical Field

The invention relates to the technical field of caving coal, in particular to a light hydraulic support for caving coal.

Background

The hydraulic prop for caving top coal is developed on the basis of a hydraulic prop for a common long-arm working face, the functions of maintaining direct jacking, self-moving and pushing a conveyor are the same in a control basic item, but the functions of a top coal mechanism, prop stress, a head-arranging prop, dust fall and other aspects are different, and the hydraulic prop for caving top coal basically requires that the hydraulic prop for caving top coal has a hydraulic control coal-releasing mechanism, the hydraulic control performance of the coal-releasing mechanism is required to be good, the hydraulic prop for caving top coal is opened and closed quickly and reliably, a coal-releasing opening is large, the hydraulic prop is not easy to block, and a good spray dust-fall device is provided; the coal discharging mechanism must have strong and reliable secondary coal breaking performance, and generally adopts a method of blasting coal breakage and large coal blocks on a bracket; the support has the functional characteristics of pushing the rear conveyor and cleaning the float coal at the rear, and a channel is left at the rear of the support and is used as a maintenance conveyor and a waste rock discharge; the stent structure must have a strong ability to resist torsional and lateral forces.

At present, the jacking device of caving coal hydraulic support adopts vertical structure more, and this makes the lateral support ability of caving coal hydraulic support limited, poor stability, and when caving coal hydraulic support carried out the material loading, the window coal charge lacked corresponding broken coal mechanism, and this condition that makes the coal mouth appear blockking up easily.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a light hydraulic support for caving coal.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a light-duty caving coal hydraulic support, includes base, alignment jig, broken mechanism and broken mechanism, the upside of base is provided with the alignment jig, be provided with broken mechanism and actuating mechanism on the alignment jig, broken mechanism is driven by actuating mechanism, be provided with four preceding free bearings and two back free bearings on the base, preceding free bearing all articulates there is main jack, the top of base is provided with the cross slide rail, sliding connection has four sliders No. one on the cross slide rail, main jack's top all articulates there is the free bearing of top, the free bearing of top all with adjacent slider fixed connection No. one, back free bearing all articulates there is vice jack, the top of vice jack all articulates there is the slider No. two, two the slider all with horizontal slide rail sliding connection.

The adjustable support comprises a shield plate and a top beam, a plurality of preformed holes are formed in the top beam, a window is formed in the middle of the shield plate, a hinged support and a hinged support are fixedly connected to the side edge, away from each other, of the shield plate and the top beam, a swing plate is hinged to the hinged support, an one-level jack is hinged to the hinged support, and the free end of the one-level jack is hinged to an adjacent swing plate.

The crushing mechanism comprises a connecting plate, an inclined plate, an opening and closing jack, a groove, a lower jaw plate and an upper jaw plate, the connecting plate is hinged in a window, the lower end of the connecting plate is hinged with the inclined plate, the bottom end of the opening and closing jack is hinged on a base, the output end of the opening and closing jack is hinged on the lower side of the inclined plate, the groove is formed in the upper side of the inclined plate, the lower jaw plate is hinged in the groove, and the upper jaw plate is fixedly connected to one side, away from the connecting plate, of the window.

Specifically, the driving mechanism comprises a servo motor, a crank, a linkage rod, a support rod, a chuck, a connecting pin, a push-pull plate, a sliding groove, a plug plate, an extension pin, a track groove and a conical head, the servo motor is fixed at the lower side of the inclined plate by screws, the output end of the servo motor passes through the inclined plate and is fixedly connected with a crank, the free end of the crank is rotatably connected with a linkage rod, the linkage rod is connected with a support rod through a spherical hinge, the top end of the supporting rod is hinged with a clamping head which is fixedly connected with the bottom side of the lower jaw plate, the track groove is arranged on the groove wall at one side of the window, the two sliding grooves are symmetrically arranged on the upper jaw plate, an inserting plate is embedded in the track groove in a sliding manner, extending pins are symmetrically arranged on two sides of the inserting plate, a push-pull plate is sleeved on the outer side of each extending pin, and the bottom end of the push-pull plate is rotatably embedded with connecting pins, and the two connecting pins respectively penetrate through the sliding grooves and are fixedly connected with the two sides of the lower jaw plate.

Specifically, the four main jacks are combined into a pyramid structure, and the two auxiliary jacks are arranged in a splayed structure.

Specifically, the shield plate is fixed with a transverse sliding rail screw, the top beam is fixed with a cross sliding rail screw, and the shield plate is hinged to the top beam.

Specifically, the upper jaw plate is obliquely arranged relative to the shield plate, and the lower jaw plate is provided with a plurality of crushing protrusions.

Specifically, a strip-shaped groove is formed in the outer wall of the top end of the push-pull plate, and the extension pin is arranged in the strip-shaped groove in a sliding mode.

The invention has the beneficial effects that:

(1) the invention relates to a light-duty caving coal hydraulic support, wherein four inclined main jacks are arranged below a cross slide rail, the main jacks are connected with the cross slide rail in a sliding manner through a first slide block, two inclined auxiliary jacks are arranged below a transverse slide rail, the auxiliary jacks are connected with the transverse slide rail in a sliding manner through a second slide block, when the main jacks and the auxiliary jacks are stretched and contracted, the slide blocks can be driven to move along the slide rail, so that the positions of the cross slide rail and the transverse slide rail are moved, the height of a top beam and an included angle between a shield plate and a top beam can be adjusted, and the jacks are inclined supporting structures, so that the lateral supporting capacity is enhanced;

(2) the invention relates to a light hydraulic prop for caving coal.A window is arranged on a shield plate, so that coal can enter from the window, a servo motor drives a crank to drive a linkage rod and a support rod to adjust the angle, a lower jaw plate and an upper jaw plate can extrude the coal in a reciprocating manner, the crushed coal falls to a conveyor along the lower jaw plate to be conveyed, in the lifting process of the lower jaw plate, a push-pull plate is pulled by an extension pin, a groove structure on the push-pull plate can extrude the extension pin to move along a track groove, so that the position of a plug plate is moved, a conical head pushes the crushed coal, and meanwhile, the plug plate seals the window in a reciprocating manner, so that the situation that too much coal enters between the lower jaw plate and the upper jaw plate can be avoided, and the situation that a driving motor is overloaded can be avoided.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a side view of a lightweight hydraulic support for caving coal provided in accordance with the present invention;

FIG. 2 is a top view of a light hydraulic support for caving coal according to the present invention;

FIG. 3 is a schematic structural diagram of an inclined plate in a light-duty caving coal hydraulic support provided by the invention;

FIG. 4 is a structural sectional view of an inclined plate in the light hydraulic support for caving coal provided by the invention;

FIG. 5 is a sectional view showing the structure of a shield plate in a hydraulic support for a light caving coal according to the present invention;

FIG. 6 is a schematic structural diagram of a cross slide rail in a light hydraulic support for caving coal provided by the present invention;

FIG. 7 is a schematic view of a connection structure of a transverse slide rail in the hydraulic support for light caving coal provided by the invention.

In the figure: 1. a base; 11. a front hinge base; 12. a main jack; 13. a cross slide rail; 14. a top hinge base; 15. a first sliding block; 16. a rear hinged support; 17. a secondary jack; 18. a second sliding block; 19. a transverse slide rail; 2. an adjusting bracket; 21. a shield plate; 22. a first hinge base; 23. a first swing plate; 24. a first-stage jack; 25. a second hinged support; 26. reserving a hole; 27. a top beam; 28. a window; 3. a crushing mechanism; 31. a connecting plate; 32. a sloping plate; 33. opening and closing the jack; 34. a groove; 35. a lower jaw plate; 36. a jaw plate is arranged; 4. a drive mechanism; 41. a servo motor; 42. a crank; 43. a linkage rod; 44. a support bar; 45. a chuck; 46. a connecting pin; 47. a push-pull plate; 48. a chute; 49. inserting plates; 410. an extension pin; 411. a track groove; 412. a cone-shaped head.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-7, the light hydraulic support for caving coal comprises a base 1, an adjusting frame 2, a crushing mechanism 3 and a driving mechanism 4, wherein the adjusting frame 2 is arranged on the upper side of the base 1, the crushing mechanism 3 and the driving mechanism 4 are arranged on the adjusting frame 2, the crushing mechanism 3 is driven by the driving mechanism 4, the base 1 is provided with four front hinged supports 11 and two rear hinged supports 16, the front hinged supports 11 are all hinged with a main jack 12, a cross slide rail 13 is arranged above the base 1, the cross slide rail 13 is slidably connected with four first sliding blocks 15, the top ends of the main jack 12 are all hinged with a top hinged support 14, the top hinged supports 14 are all fixedly connected with the adjacent first sliding blocks 15, the rear hinged supports 16 are all hinged with an auxiliary jack 17, the top ends of the auxiliary jacks 17 are all hinged with a second sliding block 18, two No. two slider 18 all with horizontal slide rail 19 sliding connection, four slider 15 correspond respectively and set up on four extension tracks of cross slide rail 13 to effectively prescribe a limit to the position of cross slide rail 13, make cross slide rail 13 keep on the central point of four slider 15 puts, when main jack 12 extends or contracts, slider 15 produces the slip for cross slide rail 13, thereby effectively adjust the height of cross slide rail 13, and in the same way, when vice jack 17 length changes, slider 18 slides for horizontal slide rail 19, thereby effectively adjust the position of horizontal slide rail 19.

Specifically, the adjusting bracket 2 comprises a shield plate 21 and a top beam 27, the top beam 27 is provided with a plurality of preformed holes 26, the middle part of the shield plate 21 is provided with a window 28, the sides of the shield plate 21 and the top beam 27 far away from each other are fixedly connected with a first hinged support 22 and a second hinged support 25, the first hinged support 22 is hinged with a first swing plate 23, the second hinged support 25 is hinged with a first jack 24, the free ends of the first-stage jacks 24 are hinged with the adjacent first swing plates 23, and the arrangement of the reserved holes 26 enables workers to cut anchor holes below the top beam 27 for blasting, the large coal blocks can be effectively crushed, the first swing plate 23 is folded and accommodated at the end parts of the shield plate 21 and the top beam 27, and the first swing plate 23 is folded and accommodated in an extending state, the support range can be effectively expanded, the support range of the hydraulic support for caving the top coal is effectively improved, and the hydraulic support is convenient to use with a conveyor in a matching manner.

Specifically, the crushing mechanism 3 comprises a connecting plate 31, an inclined plate 32, an opening and closing jack 33, a groove 34, a lower jaw plate 35 and an upper jaw plate 36, the connecting plate 31 is hinged in a window 28, the lower end of the connecting plate 31 is hinged with the inclined plate 32, the bottom end of the opening and closing jack 33 is hinged on the base 1, the output end of the opening and closing jack 33 is hinged on the lower side of the inclined plate 32, the groove 34 is arranged on the upper side of the inclined plate 32, the lower jaw plate 35 is hinged in the groove 34, the upper jaw plate 36 is fixedly connected to one side of the window 28 far away from the connecting plate 31, the connecting plate 31 is arranged to enable the inclined plate 32 and the shield plate 21 to be independently adjusted, the inclined angle of the inclined plate 32 can be adjusted by the opening and closing jack 33 in real time, so as to control the falling speed of coal fed through the window 28, rotating shafts are arranged on two sides of the top end of the lower jaw, so that the lower jaw 35 is disposed obliquely with respect to the sloping plate 32.

Specifically, actuating mechanism 4 includes servo motor 41, crank 42, gangbar 43, bracing piece 44, chuck 45, connecting pin 46, push-and-pull board 47, spout 48, picture peg 49, extends round pin 410, track groove 411 and taper head 412, servo motor 41 screw fixation is at the downside of swash plate 32, swash plate 32 fixedly connected with crank 42 is passed to servo motor 41's output, crank 42's free end rotates and is connected with gangbar 43, gangbar 43 ball joint is connected with bracing piece 44, the top of bracing piece 44 articulates there is chuck 45, chuck 45 fixed connection is in the bottom side of lower jaw 35, track groove 411 is seted up on one side cell wall of window 28, two the spout 48 symmetry is seted up on last jaw 36, sliding fit is equipped with picture peg 49 in the track groove 411, the bilateral symmetry of picture peg 49 is provided with extends round pin 410, the outside cover that extends round pin 410 is equipped with push-and-pull board 47, the bottom of push-and-pull board 47 all rotates to inlay and is equipped with connecting pin 46, two connecting pin 46 passes spout 48 fixed connection respectively in the both sides of lower jaw plate 35, crank 42 rotates in circulation, can drive linkage rod 43 bottom up-and-down motion, bracing piece 44 with linkage rod 43 ball pivot is connected then can promote the bottom of upper jaw plate 36 and rise to stick up, thereby make the bottom of lower jaw plate 35 and upper jaw plate 36 be close to each other and extrude the coal charge, and the altitude variation of lower jaw plate 35 can drive the position change of push-and-pull board 47, slide along track groove 411 by push-and-pull board 47 linkage picture peg 49, wherein when push-and-pull board 47 and picture peg 49 contained angle set up to the obtuse angle, lower jaw plate 35 and upper jaw plate 36 are close to each other, then push-and-pull board 47 pushes back picture peg 49 closed, when push-and-pull board 47 and picture peg 49 contained angle set up to the acute angle, lower jaw plate 35 and upper jaw plate 36 are close, the feeding of the coal material can be controlled in a rhythmic manner, so that the situation that the loading capacity of the inserting plate 49 is overlarge occurs.

Specifically, four main jacks 12 are combined to form a pyramid structure, two auxiliary jacks 17 are arranged to form a splayed structure, the four main jacks 12 are integrally in a quadrangular frustum structure with a narrow upper part and a wide lower part, so that when the cross slide rail 13 bears lateral pressure, the axial stress direction of the main jacks 12 and the external force direction can be basically kept parallel, the damage of the external force to the structure of the main jacks 12 is reduced, the position of the cross slide rail 13 is kept unchanged, the splayed structure of the auxiliary jacks 17 can also reduce the influence of the lateral pressure, and the structural stability of the hydraulic support is kept.

Specifically,

shield board

21 and 19 screw fixation of horizontal slide rail, back timber 27 and cross slide rail 13 screw fixation, shield board 21 and the articulated connection of back timber 27, when shield board 21 position changes, the contained angle between shield board 21 and the back timber 27 then can change, and when cross slide rail 13 highly changed, the high-order operation can enough be realized to back timber 27 highly the same change, also can carry out the low level operation, and the suitability is strong.

Specifically, the upper jaw plate 36 is obliquely arranged relative to the shield plate 21, a plurality of crushing protrusions are arranged on the lower jaw plate 35, and the lower jaw plate 35 and the upper jaw plate 36 are correspondingly arranged, and the lower jaw plate 35 and the upper jaw plate 36 are characterized in that the bottom ends of the lower jaw plate 35 and the upper jaw plate 36 are close to each other, and the top ends of the lower jaw plate 35 and the upper jaw plate 36 are relatively far away from each other, so that a crushing space can be formed between the lower jaw plate 35 and the upper jaw plate 36, the crushing protrusions on the lower jaw plate 35 can primarily blank crushed coal, and meanwhile, the lower jaw plate 35 and the upper jaw plate 36 can continuously extrude the crushed coal.

Specifically, a strip-shaped groove is formed in the outer wall of the top end of the push-pull plate 47, the extension pin 410 is slidably disposed in the strip-shaped groove, and the extension pin 410 can slide along the inner wall of the strip-shaped groove, so that the push-pull plate 47 can extrude the extension pin 410 and the insertion plate 49 to move linearly along the track groove 411.

The working principle is that coal enters a crushing space between a lower jaw plate 35 and an upper jaw plate 36 from a window 28, a crank 42 is driven by a servo motor 41 to do circular motion, a linkage rod 43 reciprocates at the bottom end under the traction action of the crank 42 so as to pull the position of a support rod 44 to change, so that the included angle between the support rod 44 and the lower jaw plate 35 is changed, the bottom end of the lower jaw plate 35 reciprocates and tilts, the lower jaw plate 35 and the upper jaw plate 36 can extrude crushed coal, the crushed coal falls onto a conveyor along the lower jaw plate 35 to be discharged, a main jack 12 synchronously extends and retracts to adjust the height of a top beam 27, an auxiliary jack 17 synchronously extends and retracts to adjust the position of a shield plate 21, so that the included angle between the top beam 27 and the shield plate 21 is changed, the distance between the shield plate 21 and the conveyor is convenient to adjust, an opening and closing jack 33 can lift up an inclined plate 32, so as to effectively adjust the inclination angle of the inclined plate 32, the blanking speed of the coal material can be controlled, the primary jack 24 can push the first swing plate 23 to rotate around the first hinged support 22 after being extended, and then the protection range of the top coal caving hydraulic support is expanded or contracted.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a light-duty caving coal hydraulic support which characterized in that: the crushing device comprises a base (1), an adjusting frame (2), a crushing mechanism (3) and a driving mechanism (4), wherein the adjusting frame (2) is arranged on the upper side of the base (1), the crushing mechanism (3) and the driving mechanism (4) are arranged on the adjusting frame (2), and the crushing mechanism (3) is driven by the driving mechanism (4);

be provided with four preceding free bearings (11) and two back free bearings (16) on base (1), preceding free bearing (11) all articulates there is main jack (12), the top of base (1) is provided with cross slide rail (13), sliding connection has No. four slider (15) on cross slide rail (13), the top of main jack (12) all articulates there is top free bearing (14), top free bearing (14) all with adjacent slider (15) fixed connection, back free bearing (16) all articulates there is vice jack (17), the top of vice jack (17) all articulates there is No. two slider (18), two slider (18) all with transverse sliding rail (19) sliding connection.

2. A light-duty hydraulic support for caving coal as claimed in claim 1, wherein: the adjusting bracket (2) is including covering backplate (21) and back timber (27), a plurality of preformed holes (26) have been seted up on back timber (27), window (28) have been seted up at the middle part of covering backplate (21), it has one number of free bearings (22) and No. two free bearings (25) to cover equal fixedly connected with on the side that backplate (21) and back timber (27) kept away from each other, it has a balance swing plate (23) all to articulate on one number of free bearings (22), it has one-level jack (24) all to articulate on No. two free bearings (25), the free end of one-level jack (24) all articulates with an adjacent balance swing plate (23).

3. A light-duty hydraulic support for caving coal as claimed in claim 1, wherein: crushing mechanism (3) are including connecting plate (31), swash plate (32), jack (33), recess (34), chin plate (35) and upper jaw board (36) open and shut, connecting plate (31) articulates in window (28), the lower extreme of connecting plate (31) articulates there is swash plate (32), the bottom of jack (33) that opens and shuts articulates on base (1), the output of jack (33) that opens and shuts articulates the downside at swash plate (32), the upside of swash plate (32) is provided with recess (34), it has chin plate (35) to articulate in recess (34), one side of connecting plate (31) is kept away from in upper jaw board (36) fixed connection window (28).

4. A light-duty hydraulic support for caving coal as claimed in claim 1, wherein: actuating mechanism (4) include servo motor (41), crank (42), gangbar (43), bracing piece (44), chuck (45), connecting pin (46), push-and-pull board (47), spout (48), picture peg (49), extend round pin (410), track groove (411) and taper head (412), servo motor (41) screw fixation is at the downside of swash plate (32), swash plate (32) fixedly connected with crank (42) is passed to servo motor's (41) output, the free end of crank (42) rotates and is connected with gangbar (43), gangbar (43) ball joint is connected with bracing piece (44), the top of bracing piece (44) articulates there is chuck (45), chuck (45) fixed connection is in the bottom side of lower jaw (35), track groove (411) are seted up on one side cell wall of window (28), two spout (48) symmetry is seted up on upper jaw (36), sliding embedding is equipped with picture peg (49) in track groove (411), the bilateral symmetry of picture peg (49) is provided with and extends round pin (410), the outside cover that extends round pin (410) is equipped with push-and-pull plate (47), the bottom of push-and-pull plate (47) is all rotated and is inlayed and be equipped with connecting pin (46), two connecting pin (46) pass the both sides of spout (48) fixed connection jaw board (35) under respectively.

5. A light-duty hydraulic support for caving coal as claimed in claim 1, wherein: the four main jacks (12) are combined into a pyramid structure, and the two auxiliary jacks (17) are arranged in a splayed structure.

6. A light-duty hydraulic support for caving coal as claimed in claim 2, wherein: the shield plate (21) is fixed with the transverse sliding rail (19) through screws, the top beam (27) is fixed with the cross sliding rail (13) through screws, and the shield plate (21) is hinged with the top beam (27).

7. A light-duty hydraulic support for caving coal as claimed in claim 3, wherein: the upper jaw plate (36) is obliquely arranged relative to the shield plate (21), and a plurality of crushing protrusions are arranged on the lower jaw plate (35).

8. A light-duty hydraulic support for caving coal as claimed in claim 4, wherein: a strip-shaped groove is formed in the outer wall of the top end of the push-pull plate (47), and the extension pin (410) is arranged in the strip-shaped groove in a sliding mode.