CN210714745U - Backfill hydraulic support - Google Patents
Backfill hydraulic support Download PDFInfo
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- CN210714745U CN210714745U CN201921361153.3U CN201921361153U CN210714745U CN 210714745 U CN210714745 U CN 210714745U CN 201921361153 U CN201921361153 U CN 201921361153U CN 210714745 U CN210714745 U CN 210714745U
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- waste rock
- telescopic
- rock blocking
- top beam
- hydraulic support
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Abstract
A backfill hydraulic support with a telescopic baffle plate on a rear top beam comprises a front top beam, a rear top beam and a base, wherein one end parts of the front top beam and the rear top beam are connected together; a telescopic front upright post is supported between the front top beam and the base, and a telescopic rear upright post is supported between the rear top beam and the base; the rear part of the rear upright post of the rear top beam is connected with a telescopic waste rock blocking device, and the telescopic waste rock blocking device comprises a waste rock blocking connecting part and a waste rock blocking telescopic part, wherein the waste rock blocking connecting part is connected with the rear top beam in a rotating mode, and the waste rock blocking telescopic part is connected with the waste rock blocking connecting part in a telescopic mode. The utility model discloses a back timber setting of backfilling hydraulic support hangs scalable waste rock baffle, has guaranteed to fill and can utilize scalable waste rock baffle to block to pile up the filling material on the collecting space area bottom plate in the operation process to avoid it to gush into to support operation space, influence the operation and move the condition of putting up.
Description
Technical Field
The utility model relates to a back timber area keeps off the backfill hydraulic support of cash, especially a backfill hydraulic support with scalable fender cash board.
Background
At present, in the known filling hydraulic support, along with the propulsion of a filling working face, after a goaf filling operation, in order to ensure that the settlement of the ground is within a control range, when the filling operation is carried out, after a filling bulk material which takes gangue from a coal preparation plant as an aggregate and is mixed with a small amount of fly ash, clay and water as a binder is discharged by a filling scraper conveyor, a one-stage or two-stage telescopic tamping mechanism carried by the support is pushed by an oil cylinder to tamp the filling material as much as possible, and the tamped filling material is required to contact a top plate of the goaf. Because the traditional filling mining mainly aims at solving the problems of coal pressing under the 'three-lower' (under buildings, roads and water bodies), the higher the required filling rate is better from the consideration of strictly controlling ground settlement, but along with the recent tightening of environmental protection policies of various regions in China, in order to solve the problems of underground water, air pollution, land occupation and the like caused by the accumulation of ground gangue, a plurality of coal-producing provinces have already produced files and require that coal is mined without raising a well, the filling rate and the control of ground settlement are not the most important problems which need to be concerned for filling mining from the consideration of the angle, the key problem is how to solve the problem that the gangue does not raise the well and simultaneously consider the coal mining production efficiency, so that the tamping mechanism carried by the original filling bracket can be cancelled without strictly controlling the filling rate, but the filling bracket is called as the filling bracket rather not suitable after the tamping mechanism is cancelled, the event the utility model discloses call it as "backfill support", do not have the tamping process, and the waste rock is piled up and has certain angle of repose again, and the waste rock bulk cargo is piled up and is closed the discharge opening that fills scraper conveyor if untimely after the take the altitude, and the support operating space will be gushed to the waste rock bulk cargo, influences normal operation and moves the frame.
Disclosure of Invention
In order to solve the problem of the above-mentioned waste rock that gushes, the utility model provides a backfill hydraulic support.
The utility model adopts the following technical scheme:
a backfill hydraulic support with a telescopic baffle plate on a rear top beam comprises a front top beam, a rear top beam and a base, wherein one end parts of the front top beam and the rear top beam are connected together;
a telescopic front upright post is supported between the front top beam and the base, and a telescopic rear upright post is supported between the rear top beam and the base;
the rear part of the rear upright post of the rear top beam is connected with a telescopic waste rock blocking device, and the telescopic waste rock blocking device comprises a waste rock blocking connecting part and a waste rock blocking telescopic part, wherein the waste rock blocking connecting part is connected with the rear top beam in a rotating mode, and the waste rock blocking telescopic part is connected with the waste rock blocking connecting part in a telescopic mode.
And a telescopic supporting piece is connected between the connecting part and the rear top beam.
The front upright post and the rear upright post are respectively provided with two.
And a sealing device is arranged between the adjacent telescopic waste rock blocking devices, and the sealing device comprises sealing curtains arranged on two sides of the waste rock blocking connecting part.
The waste rock blocking connecting part is of a rectangular hollow structure, and the waste rock blocking telescopic part can stretch out and draw back in the rectangular hollow structure through a telescopic device installed in the waste rock blocking connecting part.
Elastic side guard plate devices are installed on two sides of the waste rock blocking telescopic portion, and each elastic side guard plate device comprises a telescopic side guard device installed on two sides of the waste rock blocking telescopic portion.
The waste rock blocking telescopic part is internally provided with a fixedly arranged sleeve, at least two guide rods sliding in the sleeve and a spring in contact with the guide rods are arranged in the sleeve, and the two guide rods arranged at two ends of the sleeve are respectively and fixedly connected with a side protection device.
The invention has the beneficial effects that:
the utility model discloses a back timber setting of backfilling hydraulic support hangs scalable waste rock baffle, has guaranteed to fill and can utilize scalable waste rock baffle to block to pile up the filling material on the collecting space area bottom plate in the operation process to avoid it to gush into to support operation space, influence the operation and move the condition of putting up. And during filling operation, the telescopic part of the telescopic waste rock blocking plate extends out to abut against a bottom plate of the goaf, the filling scraper conveyor unloads materials, after the unloading operation is completed, when the support needs to move forwards, the telescopic part of the waste rock blocking plate is retracted through the telescopic jack arranged in the waste rock blocking plate and is 200mm away from the bottom plate, and then the support is operated to push the jack, so that the support moves forwards. If necessary, the telescopic side guard plate devices can be arranged on the two sides of the telescopic part of the waste rock blocking plate, so that a better inter-frame sealing effect is achieved.
Drawings
Fig. 1 is the schematic diagram of the backfill hydraulic support of the present invention.
Fig. 2 is a schematic side view of the retractable waste rock blocking plate of the present invention.
Fig. 3 is a schematic view of the retractable waste rock blocking plate of the utility model.
Fig. 4 is a schematic diagram of the device for the telescopic gangue stopping device with the elastic sealing frame gap at the extending part.
Fig. 5 is a view a-a of fig. 4.
Wherein, 1-front top beam; 2-front upright post; 3-balancing the oil cylinder; 4-front connecting rod; 5-rear top beam; 7-a support; 8-a fixing piece; 9-a suspension device; 10-filling a scraper conveyor; 12-rear upright post; 13-rear link; 14-a front link; 15-a base; 16-a side guard; 17-a guide rod; 18-a spring; 20-a telescopic oil cylinder; 21-a gangue stopping expansion part and 22-a gangue stopping connecting part.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a backfill hydraulic support, this backfill hydraulic support include front top beam 1, back timber 5 and base 15, and front top beam 1 links together with a tip rotation of back timber 5. The lower part of the rear top beam 5 is provided with a discharging device for discharging materials for a filling area, the discharging device is preferably a filling scraper conveyor 10, the filling scraper conveyor 10 is an existing conveyor and is formed by combining middle grooves with each section of length equal to the center distance of a support, a discharging opening is a device for forming the middle grooves of the filling scraper conveyor 10, the discharging opening of the filling scraper conveyor 10 is positioned at the lower part of the rear top beam 5, the opening and closing of the discharging opening are controlled by an externally arranged oil cylinder, and when the discharging opening is opened, materials conveyed on the filling scraper conveyor 10 are used for backfilling. The filling scraper conveyor 10 is suspended under the rear top beam 5 of the bracket through a suspension device 9, and the suspension device can adopt a mining round-link chain and shackle or a hoisting steel wire rope.
An extensible front upright post 2 is supported between the front top beam 1 and the base 15, and an extensible rear upright post 12 is supported between the rear top beam 5 and the base 15. The front and rear uprights 2, 12 may employ existing telescopic means including, but not limited to, telescopic cylinders or hydraulic jacks.
The two front upright columns 2 and the two rear upright columns 12 can be respectively arranged at two sides of the front top beam 1 or the rear top beam 5, and a plurality of front upright columns and a plurality of rear upright columns can be arranged as required.
And the telescopic waste rock blocking device is connected to the beam body at the rear part of the rear upright post 12 of the rear top beam 5 and comprises a waste rock blocking connecting part 22 rotationally connected with the rear top beam 5 and a waste rock blocking telescopic part 21 connected with the waste rock blocking connecting part 22.
The waste rock blocking connecting part 22 is hinged to an ear plate at the lower part of the rear top beam 5, the side face, adjacent to the rear upright post 12, of the waste rock blocking connecting part 22 is provided with the ear plate, the ear plate and the rear top beam 5 are hinged to connect the telescopic supporting part 7, the included angle between the waste rock blocking connecting part 22 and the ground can be adjusted by adjusting the telescopic length of the supporting part 7, and the supporting part 7 comprises but is not limited to a hydraulic telescopic oil cylinder or a hydraulic jack.
The waste rock blocking connecting part 22 and the waste rock blocking telescopic part 21 are drawer-type structures, the waste rock blocking connecting part 22 and the waste rock blocking telescopic part 21 are both hollow plate-shaped structures, and the waste rock blocking telescopic part 21 can be stretched in the hollow position of the plate-shaped structure of the waste rock blocking connecting part 22. The waste rock blocking connecting part 22 can be of a rectangular hollow structure, and the waste rock blocking telescopic part 21 can perform vertical telescopic motion in the rectangular hollow structure through a telescopic device installed in the waste rock blocking connecting part 22. The telescopic device 20 comprises but is not limited to a hydraulic oil cylinder or a hydraulic jack, and generally at least two telescopic devices are arranged, the fixed ends of the telescopic devices are fixedly connected inside the hollow part of the stop lever connecting part 22, the end parts of the telescopic devices can be hinged to the rear top beam 5, the telescopic ends of the telescopic devices are connected with the waste rock blocking telescopic part 21, and the waste rock blocking telescopic part 21 can be controlled to extend out or retract into the waste rock blocking connecting part 22 by controlling the telescopic devices.
When the telescopic device is a telescopic oil cylinder, the operation of the telescopic oil cylinder is realized by operating a valve plate of a plate valve or an electro-hydraulic control valve, one end of the telescopic oil cylinder is connected with the fixed part 8 through a hinge pin shaft, and the other end of the telescopic oil cylinder is connected with the telescopic part through a hinge pin shaft.
Referring to fig. 2 and 3, before the filling operation is finished in stages and the hydraulic support moves forward, the retractable oil cylinder 20 is operated to retract the waste rock blocking expansion part 21 of the retractable waste rock blocking device for a certain distance, and the distance is set as required, for example, the distance can be retracted by 200-300 mm, so that the waste rock blocking expansion part 21 leaves the bottom plate of the goaf, and the support is moved forward integrally. After the movable gangue blocking device moves forwards to the right position, the gangue blocking telescopic part 21 of the telescopic gangue blocking device can be extended out by operating the telescopic oil cylinder 20.
The front end of the front top beam 1 can also be provided with a one-stage or two-stage side protection plate and a telescopic beam, the one-stage or two-stage turnable side protection plate and the telescopic beam are devices in the existing coal mining machine and are used for supporting against a coal wall after the coal mining machine passes through, so that large coal rocks are not dropped due to crack expansion in the coal rocks under the pressure formed by the sinking of the top plate due to gravity, the telescopic beam is used for temporarily supporting the newly exposed top plate before the coal mining machine leaves a hydraulic support and the rear support moves forward, the side protection plate and the telescopic beam can be directly connected by a pin shaft or connected by a four-bar mechanism, and a drawer type structure is formed between the telescopic beam and the.
To the material that is used in the relatively dry loose cohesiveness that the collecting space backfills that does not have like through broken building rubbish etc, leak into the support space in order not to make it follow the gap between the scalable waste rock blocking device of adjacent two, the utility model discloses set up sealing device in scalable waste rock blocking device's fixed part both sides, for example, use the sealing curtain of belt conveyor's old and useless conveyer belt preparation, be fixed in the both sides of waste rock blocking connecting portion 22 with double-deck conveyer belt, after the waste rock blocking connecting portion 22 both sides of a plurality of hydraulic support all set up sealing curtain, a plurality of sealing curtains are adjacent seal up the support space, because the transport has certain elasticity, will be able to contact with the conveyer belt of adjacent waste rock blocking device on fixed to seal the gap.
And in order to guarantee the closure between the hydraulic support, avoid filling the material and gush into the support space from the gap between the adjacent two waste rock flexible portion 21, the utility model discloses an among the scalable waste rock blocking device, the flexible side guard plate device can be adorned to waste rock flexible portion 21 both sides.
Referring to fig. 4 and 5, the elastic side guard plate device comprises a side guard device 16, the side guard device 16 can be an existing side guard plate or a plate-mounted structure made of metal or plastic materials, the side guard device 16 is telescopically arranged at two sides of a gangue blocking telescopic part 21, the side guard device 16 can extend under the elastic force of a spring 18, and a guide rod 17 plays a guiding role. The connection relationship among the side guard device 16, the guide rod 17 and the spring 18 is as follows: the spring 18 is arranged in a sleeve in the waste rock blocking expansion part 21, the sleeve is made of seamless steel tubes and is transversely fixed in the waste rock blocking expansion part 21 and welded with main ribs of the waste rock blocking expansion part 21 into a whole, the guide rod 17 can slide in the sleeve, the guide rod 17 is connected with the side protection device 16 through a pin shaft, the spring 18 is not directly connected with the guide rod 17, but the end face of the spring is in contact with the guide rod 17. A plurality of guide rods 17 and springs 18 can be arranged in the sleeve at intervals, and only the two outermost guide rods 17 are connected with the side protection devices 16. When the waste rock blocking expansion part 21 is positioned inside the waste rock blocking connecting part 22, the side protection device 16 compresses the spring 18 so that the whole side protection device 16 is positioned inside the waste rock blocking expansion part 21, and after the waste rock blocking expansion part 21 extends out of the waste rock blocking connecting part 22, the whole side protection device 16 extends out of the waste rock blocking expansion part 21 for supporting under the pressure of the spring 18 by the side protection device 16. When the waste rock blocking expansion part 21 retracts into the waste rock blocking connecting part 22, the power of the side protecting device 16 for compressing the spring 18 can be given through external extra external force, and the side protecting plate forming the side protecting device 16 can also be manufactured into a structure with arc-shaped edges at the upper side and the lower side, so that when the waste rock blocking expansion part 21 retracts into the waste rock blocking connecting part 22, the waste rock blocking connecting part 22 compresses the arc-shaped edges of the side protecting plate, and the spring 18 is pressurized when the side protecting plate retracts into the waste rock blocking expansion part 21.
As shown in fig. 1, the base 15 of the present invention is further provided with a pushing device, which is the same as the existing filling hydraulic support, and is used for pushing the scraper conveyor forward and pulling the hydraulic support itself after the coal cutter cuts the coal wall.
A supporting connecting rod mechanism is further arranged between the front top beam 1 and the base 14 and comprises an upper connecting rod 4, a rear connecting rod 13 and a front connecting rod 14, one end of the upper connecting rod 4 is rotatably connected to the lower portion of the front top beam 1, one end of the rear connecting rod 13 is rotatably connected to the base 15, the other end of the upper connecting rod 4 is rotatably connected with the other end of the rear connecting rod 13, a balance oil cylinder 3 is connected between the upper portion of the upper connecting rod 4 and the lower portion of the front top beam 1, and the front connecting rod 14 is connected between the lower portion of the upper connecting rod 4 and the. The balance oil cylinder 3 can adjust the posture of the front beam 1.
The working process of the utility model can be as follows:
before filling operation, the extendable end of the telescopic oil cylinder 20 is extended by pushing the telescopic oil cylinder 20 so as to push the flexible part 21 of the waste rock blocking plate of the telescopic waste rock blocking device to extend to contact with the bottom plate of the goaf, and a discharge opening control oil cylinder of the filling scraper conveyor 10 is operated to open the discharge opening for backfilling operation;
in the backfilling process, in order to ensure that the rear filling materials do not flow into the bracket space as much as possible, sealing devices can be arranged on two sides of the fixed part 22 of the telescopic waste rock blocking device for sealing.
After the filling operation is finished, operating a directional control valve of a telescopic oil cylinder 20 to enable the telescopic oil cylinder 20 to retract so as to drive a waste rock blocking telescopic part 21 of the telescopic waste rock blocking device to retract and be 200-300 mm away from a bottom plate of a goaf, lowering the upright column, operating a directional control valve of a pushing oil cylinder of the support to enable the pushing oil cylinder to act, and moving the support forwards. The pushing oil cylinder is arranged at the middle opening position of the base 15, the bottom of the oil cylinder is connected with the base 15 through a pin shaft or a trunnion, and a piston rod of the oil cylinder is connected with the pushing frame through a pin shaft.
After the support moves forwards, the upright post rises, and meanwhile, the telescopic waste rock blocking device extends out and is grounded to carry out the next round of filling operation.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the present invention should be covered by the present invention.
Claims (7)
1. The utility model provides a backfill hydraulic support which characterized in that: comprises a front top beam (1), a rear top beam (5) and a base (15), wherein one end parts of the front top beam (1) and the rear top beam (5) are connected together;
a telescopic front upright post (2) is supported between the front top beam (1) and the base (15), and a telescopic rear upright post (12) is supported between the rear top beam (5) and the base (15);
the rear upright post (12) rear portion of back timber (5) is connected scalable waste rock blocking device, and scalable waste rock blocking device includes the waste rock blocking connecting portion (22) of being connected with back roof timber (5) rotation and the waste rock blocking flexible portion (21) with waste rock blocking connecting portion (22) telescopic connection.
2. A backfilling hydraulic support according to claim 1, wherein:
and a telescopic supporting piece (7) is connected between the waste rock blocking connecting part (22) and the rear top beam (5).
3. A backfilling hydraulic support according to claim 1, wherein:
the front upright post (2) and the rear upright post (12) are respectively provided with two.
4. A backfilling hydraulic support according to claim 1, wherein:
sealing devices are arranged between the adjacent telescopic waste rock blocking devices, and each sealing device comprises sealing curtains arranged on two sides of the waste rock blocking connecting part (22).
5. A backfilling hydraulic support according to claim 1, wherein:
the waste rock blocking connecting part (22) is of a rectangular hollow structure, and the waste rock blocking telescopic part (21) can stretch out and draw back in the rectangular hollow structure through a telescopic device installed in the waste rock blocking connecting part (22).
6. A backfilling hydraulic support according to claim 5, wherein:
elastic side guard plate devices are installed on two sides of the waste rock blocking telescopic portion (21), and each elastic side guard plate device comprises a side guard device (16) which is installed on two sides of the waste rock blocking telescopic portion (21) in a telescopic mode.
7. A backfilling hydraulic support according to claim 6, wherein:
the waste rock blocking telescopic part (21) is of a rectangular hollow structure, the waste rock blocking telescopic part (21) can vertically move in the rectangular hollow structure of the waste rock blocking connecting part (22), a sleeve is transversely fixed in the rectangular hollow structure inside the waste rock blocking telescopic part (21), at least two guide rods (17) which slide in the sleeve and a spring (18) which is in contact with the guide rods (17) are installed in the sleeve, and the two guide rods (17) installed at the two ends of the sleeve are respectively fixedly connected with one side protection device (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921361153.3U CN210714745U (en) | 2019-08-21 | 2019-08-21 | Backfill hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921361153.3U CN210714745U (en) | 2019-08-21 | 2019-08-21 | Backfill hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210714745U true CN210714745U (en) | 2020-06-09 |
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ID=70930024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921361153.3U Active CN210714745U (en) | 2019-08-21 | 2019-08-21 | Backfill hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210714745U (en) |
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2019
- 2019-08-21 CN CN201921361153.3U patent/CN210714745U/en active Active
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