CN215170129U - Three-stage lapping device with large expansion ratio of hydraulic support - Google Patents
Three-stage lapping device with large expansion ratio of hydraulic support Download PDFInfo
- Publication number
- CN215170129U CN215170129U CN202120619948.0U CN202120619948U CN215170129U CN 215170129 U CN215170129 U CN 215170129U CN 202120619948 U CN202120619948 U CN 202120619948U CN 215170129 U CN215170129 U CN 215170129U
- Authority
- CN
- China
- Prior art keywords
- lapping
- primary
- jack
- stage
- box body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a hydraulic support large-expansion-ratio three-stage net laying device, belonging to the technical field of coal mine underground fully mechanized mining support equipment; the device comprises a base assembly, a primary lapping beam, a secondary lapping beam, a primary lapping jack and a secondary lapping jack; an open type box body is arranged at the rear end of a bottom plate of the base assembly body, a primary lapping beam is inserted in the open type box body, a secondary lapping beam is inserted in the primary lapping beam, a primary lapping jack is connected between the base assembly body and the primary lapping beam, a secondary lapping jack is connected between the primary lapping beam and the secondary lapping beam, and an anti-hanging guide pipe is arranged on the secondary lapping beam; the pedal is fixed on the base assembly through the clamping plate; the pedal and the secondary lapping beam can be fixedly provided with rubber through a rubber fixing plate; the problems that the gob-side entry retaining net laying support is influenced by the limitation of the tail space of the support when the variation of the thickness of a coal bed is large, a net laying mechanism is easy to hang a net, the expansion ratio is not enough, jamming is easy to occur and the like are solved.
Description
Technical Field
The utility model belongs to the technical field of the colliery is fully mechanized in the pit and is strutted equipment, concretely relates to tertiary lapping device of big concertina ratio of hydraulic support.
Background
When the existing gob-side entry retaining coal mining operation is carried out, the devices at the junction of a coal mining working face and a roadway are various, coal rocks and layers are seriously damaged, and the existing gob-side entry retaining coal mining operation is an important place for fully-mechanized coal mining work. However, due to the limitation of the space at the tail part of the support, the net laying mechanism usually faces the problems of easy net hanging, insufficient expansion ratio, easy jamming and the like, and the design of the net laying device with the large expansion ratio is particularly important for the coal mine fully-mechanized mining work with the requirement.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the defects of the prior art and provides a hydraulic support three-stage lapping device with large expansion ratio; the problems that the gob-side entry retaining net laying support is influenced by the limitation of the tail space of the support when the thickness of a coal seam changes greatly, a net laying mechanism is easy to hang a net, the expansion ratio is not enough, jamming is easy to occur and the like are solved.
In order to achieve the above purpose, the present invention is achieved by the following technical solutions.
A hydraulic support large-expansion-ratio three-stage lapping device comprises a base assembly, a first-stage lapping beam, a second-stage lapping beam, a first-stage lapping jack and a second-stage lapping jack; an open box body is arranged on a bottom plate at the rear end of the base assembly, the open box body is of a square box structure with an open upper end, clamping plates are arranged on the outer sides of main ribs on two sides of the base assembly, and the open box body is arranged between the clamping plates on the two sides; the primary lapping beam is of a square box body structure with an open upper end, the lower end of the primary lapping beam is inserted into the inner space of the open box body, and the upper end of the primary lapping beam is arranged outside the open box body; two second lug plates are symmetrically arranged at the upper part of the outer side surface of the front end of the primary lapping beam, two first lug plates are symmetrically arranged at the connecting angle between the bottom plate of the base assembly and the outer end surface of the open type box body, the two first lug plates are respectively positioned under the second lug plates, the number of the primary lapping jacks is two, one end of the base is connected with the first lug plates through hinge pins, and one end of a telescopic rod is connected with the second lug plates through hinge pins; the second-stage lapping beam is of a hollow square box structure, the lower end of the second-stage lapping beam is inserted into the inner space of the first-stage lapping beam, and the upper end of the second-stage lapping beam is positioned outside the first-stage lapping beam; the upper part of the outer side surface of the front end of the secondary lapping beam is provided with two third lug plates, the lower end of the outer side surface of the primary lapping beam is detachably connected with two connecting trunnions, the two connecting trunnions are respectively and correspondingly arranged under the two third lug plates, the number of the secondary lapping jacks is two, one end of a base of each secondary lapping jack is hinged with the corresponding connecting lug shaft, and one end of a telescopic rod of each secondary lapping jack is connected with the corresponding third lug plate through a hinge pin shaft; a pedal is arranged on one side of the primary lapping jack, which is far away from the open type box body, and a strip-shaped rubber fixing plate is arranged on the upper end surface of the pedal; two rubber fixing plates are symmetrically arranged at two ends of a third lug plate on the second-stage lapping beam; and the upper end surface of the secondary lapping beam is fixedly provided with a net hanging prevention guide pipe.
Furthermore, two symmetrical vertical slots and one horizontal slot are formed in the open type box body, the horizontal slot is located at the lower end of the vertical slot and is communicated with the two vertical slots, the two vertical slots and the horizontal slot form a U-shaped slot, and the connecting trunnion penetrates through the two vertical slots and extends out of the open type box body.
Furthermore, the pedal is horizontally arranged, and two ends of the pedal are fixed with the clamping plate.
Furthermore, the length of the rubber fixing plate on the upper end surface of the pedal plate is longer than that of the two rubber fixing plates on the second-stage net laying beam.
Further, prevent that to hang net stand pipe level setting, its both ends surpass the both sides tip of second grade lapping roof beam, prevent simultaneously that the both sides tip of hanging net stand pipe moves towards the one end of keeping away from second grade lapping jack to at corner rounding off.
Further, the distance between the two third ear plates is smaller than the distance between the two second ear plates.
Furthermore, the cylinder diameter of the first-stage lapping jack and the second-stage lapping jack is 80-100 mm, the rod diameter of the piston rod is 60-70 mm, and the stroke is 450-600 mm.
The utility model discloses produced beneficial effect for prior art does:
(1) the first lug plate on the base assembly is designed on the bottom plate, so that the stroke space of the net laying mechanism is promoted to the maximum extent, and the expansion ratio is enlarged;
(2) The utility model provides a lapping device, the open box body is designed at the rear part of the base assembly, the expansion ratio is enlarged when the lapping beam is placed, and foreign matters such as gangue entering the mechanism are leaked;
(3) the net hanging prevention net pipe designed on the second-stage net laying beam can effectively prevent net hanging and reduce the friction between the supporting net and the net laying device, so that the net laying work is more convenient;
(4) the utility model provides a lapping device, which is characterized in that a rubber is arranged on a rubber fixing plate, thus effectively preventing coal gangue from entering a lapping mechanism;
(5) the utility model provides a lapping device, the stretching and retracting of the lapping mechanism can be controlled by an operating valve or a remote controller, the labor intensity of personnel can be reduced, and the working efficiency is improved;
(6) the utility model provides a lapping device, the device simple structure, convenient operation, concertina ratio are big, low in manufacturing cost, and the lapping is effectual.
Drawings
The invention will be described in further detail with reference to the accompanying drawings:
fig. 1 is a schematic structural view of the whole of the present invention;
FIG. 2 is a front cross-sectional view of FIG. 1;
FIG. 3 is a sectional view taken along line G-G of FIG. 2;
FIG. 4 is a schematic view of the connection of the primary and secondary lapping beams of FIG. 1;
FIG. 5 is a front cross-sectional view of the present invention with the rubber installed;
FIG. 6 is a perspective view of FIG. 5;
FIG. 7 is a front and left view of the primary lapping beam;
FIG. 8 is a front and left view of a secondary lapping beam;
fig. 9 is a schematic structural view of the connection trunnion of the present invention;
wherein, 1 is the base assembly, 2 is the one-level lapping roof beam, 3 is the second grade lapping roof beam, 4 is the one-level lapping jack, 5 is the second grade lapping jack, 6 is open box, 7 is the cardboard, 8 is the second otic placode, 9 is the first otic placode, 10 is the third otic placode, 11 is connecting the trunnion, 12 is vertical fluting, 13 is horizontal fluting, 14 is the rubber fixed plate, 15 is putting the hanging net stand pipe, 16 is the running-board, 17 is the rubber, 18 is connecting the trunnion spliced eye.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1-9, the utility model provides a hydraulic support tertiary lapping device of big expansion ratio, including base assembly 1, one-level lapping roof beam 2, second grade lapping roof beam 3, one-level lapping jack 4, second grade lapping jack 5.
An open box body 6 is arranged on a bottom plate at the rear end of the base assembly body 1, the open box body 6 is of a square box structure formed by welding steel plates, and the upper end face of the open box body is in an open state.
The base assembly comprises a base assembly body 1 and is characterized in that clamping plates 7 are arranged on the outer sides of main ribs on two sides of the base assembly body 1, the clamping plates 7 are perpendicular to a bottom plate of the base assembly body 1, and an open type box body 6 is arranged between the clamping plates 7 on the two sides.
The first-stage lapping beam 2 is of a square box structure with an open upper end and is welded by steel plates, and the thickness of the first-stage lapping beam is slightly smaller than the width of the inner side space of the open box. The lower end of the first-level lapping beam 2 is inserted into the inner space of the open type box body 6, and the upper end of the first-level lapping beam is arranged outside the open type box body 6.
The upper portion of 2 front end lateral surfaces of one-level lapping roof beams is provided with two second otic placodes 8, second otic placode 8 is in same height to the symmetry sets up in the both ends of one-level lapping roof beam 2. Two first ear plates 9 are symmetrically arranged at the connecting angle between the bottom plate of the base assembly 1 and the front outer end surface of the open type box body 6. The two first ear plates 9 are respectively located directly below the second ear plate 8.
The number of the first-stage lapping jacks 4 is two, one end of a base of each first-stage lapping jack is connected with the first ear plate 9 through a hinge pin shaft, and one end of a telescopic rod of each first-stage lapping jack is connected with the second ear plate 8 through a hinge pin shaft. The extension and the contraction of the first-stage lapping beam 2 in the open type box body 6 can be controlled through the extension and the contraction of the first-stage lapping jack 4.
The second-level lapping beam 3 is of a hollow square box structure and is formed by welding steel plates, and the thickness of the second-level lapping beam is slightly smaller than the width of the inner space of the first lapping beam 2. The lower end of the second-stage lapping beam 3 is inserted into the inner space of the first-stage lapping beam 2, and the upper end of the second-stage lapping beam is positioned outside the first-stage lapping beam 2.
The upper portion of second grade lapping roof beam 3 front end lateral surface is provided with two third otic placodes 10, third otic placode 10 is located same height, and the symmetry sets up in the both ends of second grade lapping roof beam 3 to distance between two third otic placodes 10 is less than the distance between two second otic placodes 8.
Two connecting trunnion insertion holes 18 are arranged at the lower part of the outer side surface of the front end of the primary lapping beam 2, and the two connecting trunnion insertion holes 18 have the same height and are symmetrically arranged on the outer side surface of the primary lapping beam 2. The connecting trunnion 11 is inserted into the connecting trunnion insertion hole 18 and is fixed on the primary lapping beam 2 by rotating 90 degrees. And the two connecting trunnions 11 are respectively and correspondingly positioned right below the two third lug plates 10.
The open type box body 6 is provided with two symmetrical vertical slots 12 and a horizontal slot 13, the horizontal slot 13 is positioned at the lower end of the vertical slot 12 and is communicated with the two vertical slots 12, and the two vertical slots 12 and the horizontal slot 13 form a U-shaped slot. The connecting trunnions 11 respectively extend out of the open box 6 through two vertical slots 12. Through the cooperation of connecting gudgeon 11 and U-shaped fluting, can prevent that one-level lapping roof beam 2 from deviating from inside open box 6.
The two-stage lapping jacks 5 are two in number, one end of a base of each second-stage lapping jack is hinged to the connecting trunnion 11, and one end of a telescopic rod of each second-stage lapping jack is connected with the third ear plate 10 through a hinged pin shaft. The extension and contraction of the secondary lapping beam 3 in the primary lapping beam 2 can be controlled by the extension and contraction of the secondary lapping jack 5.
The cylinder diameter of the first-stage lapping jack 4 and the second-stage lapping jack 5 is 80-100 mm, the rod diameter of the piston rod is 60-70 mm, and the stroke is 450-600 mm.
A pedal plate 16 is arranged on one side of the first-stage lapping jack 4 far away from the open type box body 6, the pedal plate 16 is horizontally arranged, and two ends of the pedal plate 16 are fixed with the clamping plate 7. The height of the footboard 16 is lower than the height of the upper end of the open type case 6.
The upper end face of the pedal plate 16 is welded with a strip-shaped rubber fixing plate 14 with a long length, two rubber fixing plates 14 with a short length are symmetrically welded at two ends of the third ear plate 10 on the secondary lapping beam 3, and the two rubber fixing plates 14 are the same in height.
The welding of upper end at second grade lapping roof beam 3 has prevents hanging net stand pipe 15, prevent hanging net stand pipe 15 level setting, its both ends surpass the both sides tip of second grade lapping roof beam 3, prevent simultaneously that the both sides tip of hanging net stand pipe 15 is towards the rear to at corner rounding off.
The utility model discloses a theory of operation does:
when the coal mining height of the support needs to be changed due to the change of the thickness of the coal seam, the primary lapping jack 4 is controlled to extend out through a remote control or control valve, at the moment, the primary lapping beam 2 moves upwards, the connecting trunnion 11 moves in the vertical slot 12, and meanwhile, the secondary lapping beam 3 is driven to move upwards; when the movement stroke of the first-stage lapping jack 4 does not meet the lapping height requirement, on the basis that the first-stage lapping jack 4 runs to the maximum stroke, the second-stage lapping jack 5 begins to extend out to drive the second-stage lapping beam 3 to continue to move upwards until the lapping height requirement is reached.
During the lapping process, rubber 17 is fixed on the pedal 16 and three rubber fixing plates 14 of the secondary lapping beam 3, so that coal and gangue are prevented from entering the lapping device and being blocked.
The first ear plate 9 is designed on the bottom plate of the base assembly 1, so that the stroke space of the lapping mechanism can be promoted to the greatest extent, and the expansion ratio is enlarged.
An open box body 6 is arranged at the rear part of the base assembly body, the expansion ratio is enlarged while the lapping beam is placed, and foreign matters such as gangue entering the lapping device are leaked.
The upper end of the second-stage lapping beam 3 is provided with a net hanging prevention guide pipe 15, so that the friction between a supporting net and a lapping device can be reduced, and the lapping work is more convenient.
The utility model provides a pair of tertiary lapping device of big concertina ratio of hydraulic support, in the big comprehensive environment of adopting of coal seam thickness degree of change with adopt high looks adaptation, improve gob entry work in lapping efficiency. The device has gone through the work of mineing under the reality, and the lapping is effectual, and the suitability is strong, and simple structure is reasonable, and convenient operation has obtained the recognition of ore deposit side, provides reference and reference for the design of similar gob entry lapping support in the future.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a big concertina ratio tertiary lapping device of hydraulic support which characterized in that: comprises a base assembly (1), a primary lapping beam (2), a secondary lapping beam (3), a primary lapping jack (4) and a secondary lapping jack (5);
an open box body (6) is arranged on a bottom plate at the rear end of the base assembly (1), the open box body (6) is of a square box structure with an open upper end, clamping plates (7) are arranged on the outer sides of main ribs on two sides of the base assembly, and the open box body (6) is arranged between the clamping plates (7) on the two sides;
the primary lapping beam (2) is of a square box structure with an open upper end, the lower end of the primary lapping beam is inserted into the inner space of the open box (6), and the upper end of the primary lapping beam is arranged outside the open box (6);
two second ear plates (8) are symmetrically arranged at the upper part of the outer side surface of the front end of the primary lapping beam (2), two first ear plates (9) are symmetrically arranged at the connecting angle of the bottom plate of the base assembly (1) and the outer end surface of the open type box body, the two first ear plates (9) are respectively positioned under the second ear plates (8), the number of the primary lapping jacks (4) is two, one end of the base is connected with the first ear plates (9) through hinge pins, and one end of each telescopic rod is connected with the second ear plates (8) through hinge pins;
The secondary lapping beam (3) is of a hollow square box structure, the lower end of the secondary lapping beam is inserted into the inner space of the primary lapping beam (2), and the upper end of the secondary lapping beam is positioned outside the primary lapping beam (2);
two third lug plates (10) are arranged on the upper part of the outer side surface of the front end of the secondary lapping beam (3), two connecting trunnions (11) are detachably connected to the lower end of the outer side surface of the primary lapping beam (2), the two connecting trunnions (11) are respectively and correspondingly arranged right below the two third lug plates (10), the number of the secondary lapping jacks (5) is two, one end of a base of each secondary lapping jack is hinged to the connecting trunnions (11), and one end of a telescopic rod of each secondary lapping jack is connected with the third lug plates (10) through hinge pin shafts;
a foot board (16) is arranged on one side of the primary lapping jack (4) far away from the open box body (6), and a strip-shaped rubber fixing plate (14) is arranged on the upper end face of the foot board (16); two rubber fixing plates (14) are symmetrically arranged at two ends of a third ear plate (10) on the secondary lapping beam (3);
an anti-net hanging guide pipe (15) is fixedly arranged on the upper end surface of the secondary net laying beam (3).
2. The three-stage lapping device with the large expansion ratio of the hydraulic support according to claim 1, is characterized in that: the open type box body (6) is provided with two symmetrical vertical slots (12) and a horizontal slot (13), the horizontal slot (13) is located at the lower end of the vertical slot (12) and communicated with the two vertical slots (12), the two vertical slots (12) and the horizontal slot (13) form a U-shaped slot, and the connecting trunnion (11) penetrates through the two vertical slots (12) respectively and extends out of the open type box body (6).
3. The three-stage lapping device with the large expansion ratio of the hydraulic support according to claim 1, is characterized in that: the pedal (16) is horizontally arranged, and two ends of the pedal are fixed with the clamping plate (7).
4. The three-stage lapping device with the large expansion ratio of the hydraulic support according to claim 1, is characterized in that: the length of the rubber fixing plate (14) on the upper end surface of the pedal plate (16) is longer than that of the two rubber fixing plates (14) on the secondary lapping beam (3).
5. The three-stage lapping device with the large expansion ratio of the hydraulic support according to claim 1, is characterized in that: prevent hanging net stand pipe (15) level setting, its both ends surpass the both sides tip of second grade shop net roof beam (3), prevent simultaneously that the both sides tip of hanging net stand pipe (15) moves towards the one end of keeping away from second grade shop net jack (5) to at the rounding off of corner.
6. The three-stage lapping device with the large expansion ratio of the hydraulic support according to claim 1, is characterized in that: the distance between the two third ear plates (10) is smaller than the distance between the two second ear plates (8).
7. The three-stage lapping device with the large expansion ratio of the hydraulic support according to claim 1, is characterized in that: the cylinder diameter of the first-stage lapping jack (4) and the second-stage lapping jack (5) is 80-100 mm, the rod diameter of the piston rod is 60-70 mm, and the stroke is 450-600 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120619948.0U CN215170129U (en) | 2021-03-26 | 2021-03-26 | Three-stage lapping device with large expansion ratio of hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120619948.0U CN215170129U (en) | 2021-03-26 | 2021-03-26 | Three-stage lapping device with large expansion ratio of hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215170129U true CN215170129U (en) | 2021-12-14 |
Family
ID=79353438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120619948.0U Active CN215170129U (en) | 2021-03-26 | 2021-03-26 | Three-stage lapping device with large expansion ratio of hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215170129U (en) |
-
2021
- 2021-03-26 CN CN202120619948.0U patent/CN215170129U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017063370A1 (en) | Self-moving hydraulic end-face support based on parallel mechanism and application thereof | |
| CN101666230B (en) | Coal mining method of lengthened front-beam fully-mechanized mining and fully-mechanized top coal carving of three-soft coal seam and equipment | |
| CN201090230Y (en) | Fission top beam flexible support | |
| CN202544886U (en) | Self-moving type tunnel advance support bracket | |
| CN216043737U (en) | Novel shield tunnel portal mechanical breaking and dismantling platform | |
| CN215170129U (en) | Three-stage lapping device with large expansion ratio of hydraulic support | |
| CN205117343U (en) | Quick change base and multi -functional motion arm | |
| CN103306696A (en) | Self-moving roadway advance support bracket | |
| CN218598231U (en) | Novel hydraulic support for coal face crossheading | |
| CN216714434U (en) | Novel fully-mechanized mining frame rear filling movable slurry blocking type hydraulic support | |
| CN201288577Y (en) | Combined rack with hanging mechanism for guidance moving beam | |
| CN201141307Y (en) | Suspension hydraulic support with front cantilever | |
| CN210622725U (en) | Four-connecting-rod lifting all-dimensional rotating device | |
| CN209799975U (en) | Multifunctional drilling and anchoring machine with telescopic platform structure | |
| CN210858768U (en) | Waste rock baffle assembly and filling hydraulic support thereof | |
| CN202866848U (en) | Top coal caving support capable of preventing extensible beam from offsetting | |
| CN210013717U (en) | Five-bar linkage abduction type hydraulic support | |
| CN210738591U (en) | Coal mine tunnel strutting arrangement | |
| CN211038734U (en) | Gangue-avoiding double-telescopic tamping mechanism | |
| CN216305981U (en) | Advance support hydraulic support with double-telescopic support function | |
| CN218912927U (en) | Multifunctional split supporting type roadway hydraulic support unit | |
| CN215761733U (en) | Supporting top beam device capable of protecting original permanent support of roadway | |
| CN219529059U (en) | Tunneling and anchoring integrated machine with advanced sliding shield | |
| CN113309533B (en) | Open TBM expanding excavation head-planting-preventing method | |
| CN210599093U (en) | Double-telescopic tamping mechanism for gangue filling hydraulic support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |