CN114278367B - Carrying device of hydraulic unit support and control method thereof - Google Patents
Carrying device of hydraulic unit support and control method thereof Download PDFInfo
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- CN114278367B CN114278367B CN202111560571.7A CN202111560571A CN114278367B CN 114278367 B CN114278367 B CN 114278367B CN 202111560571 A CN202111560571 A CN 202111560571A CN 114278367 B CN114278367 B CN 114278367B
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000005641 tunneling Effects 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000969 carrier Substances 0.000 claims 2
- 239000003921 oil Substances 0.000 description 49
- 239000003245 coal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 239000012530 fluid Substances 0.000 description 1
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Abstract
The invention discloses a carrying device of a hydraulic unit bracket and a control method thereof, wherein the carrying device comprises a frame moving guide rail assembly and a carrying trolley; the frame moving guide rail assembly comprises a main I-beam, two front cantilever I-beams, two bracket supporting legs and two telescopic bracket supporting legs, wherein the main I-beam is built on the bracket; the carrying trolley comprises a base, a scissor fork type lifting mechanism, a platform and a transmission case; when the hydraulic unit support device works, the front cantilever I-beam extends out of the bracket, and the carrying trolley can carry the rear hydraulic unit support to the forefront end of a tunneling surface, so that the requirement of advanced support is met; the bracket can adjust the inclination angle of the guide rail assembly so as to adapt to the fluctuation of the roadway bottom plate; according to the invention, by means of transferring the hydraulic unit support by the independent track and the carrying trolley, repeated support of the support to the top plate in the process of transferring the tunneling support frame can be reduced, the roadway top plate is effectively protected, and the frame transferring efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of fully-mechanized roadway support of coal mines, and particularly relates to a hydraulic support carrying device which is suitable for carrying and transferring a hydraulic unit support in the working process.
Background
The hydraulic support is one of the most important equipment of the comprehensive mechanized tunneling working face, and the tunneling working efficiency depends on whether the hydraulic support supports are timely and efficient or not to a great extent, so that the hydraulic support transfer efficiency is improved. In the existing supporting equipment, the hydraulic support frame moving mode mostly adopts a stepping mode, and although the hydraulic support frame moving mode has a certain effect on reducing manpower and improving safety, the hydraulic support frame moving mode is low in frame moving efficiency, and can repeatedly support roadway top plates, so that the top plates are easy to break, and the safety of workers is threatened.
Chinese patent CN 214091932U proposes a novel flexible hydraulic shield support, which has simple structure, convenient assembly and good adaptability to roadways, but the movement of the support is completed completely by the extension and retraction of an oil cylinder between the hydraulic supports, and the efficiency is low. Chinese patent CN205654366U proposes a comprehensive excavator on-board temporary support device, which can timely and effectively support a coal seam roof and a head-on coal wall, improves the safety of head-on operation of a comprehensive excavator working face, but has limited working space when workers perform anchor operation under the temporary support device, and is inconvenient for the workers to operate.
Disclosure of Invention
The invention aims to solve the problems of low frame moving speed and the like in the working process of the hydraulic support, and provides a carrying device of the hydraulic unit support. In addition, the invention also provides a set of control method for the conveying device, which is used for realizing the control of the device.
The technical scheme of the invention is as follows:
the carrying device of the hydraulic unit bracket comprises a movable rack guide rail component with an adjustable inclination angle and a carrying trolley with a lifting function; the frame moving guide rail assembly comprises a bracket (2) built on a heading machine (14), a main I-beam (1) fixed on the bracket (2), two front-detection I-beams (6), a front-detection I-beam telescopic cylinder (7), two bracket supporting legs (3) and two bracket telescopic supporting legs (4); each forepoling I-beam (6) is respectively and slidably arranged on the bracket (2); the cylinder body of the cantilever beam telescopic cylinder (7) is fixedly connected with the bracket (2), and the piston rod is fixedly connected with the cantilever beam (6); the bracket (2) is hinged with the bracket supporting leg (3) and the bracket telescopic supporting leg (4) respectively; the carrying trolley comprises a base (9) and a transmission case (12); the pulley (8) is arranged below the base (9) of the carrying trolley, the transverse distance between the main I-beam (1) and the single front-detection I-beam (6) is just equal to the diameter of the pulley (8), the gaps between the pulleys (8) on two sides of the carrying trolley along the advancing direction are just matched with the main I-beam (1), the transmission case (12) pushes the carrying trolley to move forwards along the guide rail assembly, and the hydraulic unit support is placed in the empty top area at the front end of the heading machine (14).
Preferably, the transverse spacing of the main i-beam (1) and the single forerunner i-beam (6) is exactly equal to the diameter of the pulley (8); the transverse clearance between the two driving pulleys (8) of the carrying trolley is exactly equal to the thickness of the web plate of the main I-beam (1).
Preferably, each of the front I-beams (6) is respectively nested in a corresponding groove of the bracket (2), and the grooves can limit the movement direction of the front I-beams (6) when the front I-beams are telescopic.
Preferably, the front-detection I-beam (6) is matched with the main I-beam (1) on the bracket (2) to form a travelling track of the carrying trolley; the transmission case (12) fixed on the base (9) drives the pulley (8) to rotate, so that the free movement of the carrying trolley on the moving frame guide rail assembly is realized.
Preferably, the handling trolley further comprises a scissor lift mechanism (10), the scissor lift mechanism (10) being for lifting the hydraulic unit support.
Preferably, the frame moving guide rail assembly further comprises a hydraulic control system, wherein the hydraulic control system comprises an oil suction filter (L) connected with an oil tank, a hydraulic pump (B) connected with the oil suction filter (L), a high-pressure filter (C) connected with the hydraulic pump (B), and a reversing valve (D1), a reversing valve (D2), a reversing valve (D3) and a reversing valve (D4) arranged at an oil outlet of the high-pressure filter (C); the oil outlets of the reversing valves are connected with an oil tank through a cooler (J) and an oil return filter (K); the overflow valve (I) is connected in parallel with the main oil path; two working oil ports of the reversing valve (D1) are respectively connected with oil collecting ports of the flow distributing and collecting valve (E1) and the flow distributing and collecting valve (E2); two working oil ports of the reversing valve (D2) are respectively connected with oil collecting ports of the flow distributing and collecting valve (E3) and the flow distributing and collecting valve (E4); the hydraulic motor G is connected with two working oil ports of the reversing valve (D4); the hydraulic cylinder G1 is connected with the oil distributing and collecting valve (E1) and the oil distributing and collecting valve (E2) through a hydraulic control one-way valve F1, a rodless cavity of the hydraulic cylinder G1 is connected to one oil distributing and collecting valve (E1), and a rod cavity of the hydraulic cylinder G is connected to one oil distributing and collecting valve (E2); the hydraulic cylinder G2 is connected with the flow dividing and collecting valve (E1) and the flow dividing and collecting valve (E2) through the hydraulic control one-way valve (F2), a rodless cavity of the hydraulic cylinder G2 is connected to one flow dividing and collecting valve (E1), and a rod cavity of the hydraulic cylinder G is connected to one flow dividing and collecting valve (E2); the hydraulic cylinder (G3) is connected with the distributing and collecting valve (E3) and the distributing and collecting valve (E4) through the hydraulic control one-way valve (F3), a rodless cavity of the hydraulic cylinder is connected to one distributing and collecting valve (E3) and a rod cavity of the hydraulic cylinder is connected to one distributing and collecting valve (E4); the hydraulic cylinder (G4) is connected with the flow dividing and collecting valve (E3) and the flow dividing and collecting valve (E4) through the hydraulic control one-way valve (F4), a rodless cavity of the hydraulic cylinder is connected to one flow dividing and collecting valve (E3), and a rod cavity of the hydraulic cylinder is connected to one flow dividing and collecting valve (E4); the hydraulic cylinder (G5) is connected with two working oil ports of the reversing valve (D3) through a hydraulic control one-way valve (F5).
The beneficial effects of the invention are as follows:
(1) The frame moving guide rail assembly consists of a main rail and a front detection I-beam, the front detection I-beam can extend forwards according to specific requirements in the working process, and the frame moving speed is high and the structure is simpler and more reliable by adopting a friction driving mode of the I-beam and pulleys.
(2) According to the invention, the hydraulic unit support is conveyed to the empty roof area of the tunneling surface by using the carrying trolley positioned on the I-beam, the hydraulic unit support is propped against the tunnel roof by the operation of the hydraulic cylinder, temporary support is completed, and a worker can anchor and protect the safety area established below the last hydraulic unit support.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a handling device according to the present invention;
FIG. 2 is a schematic view of the handling device of the present invention in operation;
FIG. 3 is a schematic view of a carriage rail assembly;
FIG. 4 is a schematic view of a cart;
FIG. 5 is a side view of the transfer cart;
FIG. 6 is a schematic cross-sectional view of a handling device according to the present invention;
fig. 7 is a schematic diagram of a hydraulic control system of the handling device of the present invention.
In the figure: 1-a main i-beam; 2-a bracket; 3-bracket legs; 4-telescopic legs of the bracket; 5-a driven pulley; 6-a forerunner i-beam; 7-a front cantilever telescopic cylinder; 8-a pulley; 9-a base; 10-a scissor lift mechanism; 11-a platform; 12-a transmission case; 13-a hydraulic unit bracket; 14-a heading machine; 15-a reversed loader; a-prime mover; b-a hydraulic pump; c, a high-pressure filter; d1-4-reversing valve; e1-4-a flow dividing and collecting valve; f1-5-a hydraulic control one-way valve; g1-5-hydraulic cylinder; h1-2-a hydraulic motor; i-an overflow valve; j-cooler; k is an oil return filter; an L-oil absorption filter, an M-air filter; n is a liquid level thermometer.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and complete in conjunction with the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
As shown in fig. 1 to 6, a carrying device for a hydraulic unit support mainly comprises a movable support guide rail assembly with an adjustable inclination angle and a carrying trolley with a lifting function; the frame moving guide rail assembly comprises a bracket 2 built on a heading machine 14, a main I-beam 1 fixed on the bracket 2, two front I-beams 6, two bracket supporting legs 3 and two bracket telescopic supporting legs 4; each front detection I-beam 6 is nested in a corresponding groove of the bracket 2, the cylinder body of the telescopic cylinder 11 is fixedly connected with the bracket 2, and a piston rod is fixedly connected with the front detection I-beams 6; the transverse spacing between the main I-beam 1 and the single forepoling I-beam 6 is exactly equal to the diameter of the pulley 8; the lower sides of the brackets 2 are respectively provided with a connecting lug seat and are hinged with the bracket supporting legs 3 and the bracket telescopic supporting legs 4 through pin shafts; the carrying trolley comprises a base 13, a scissor fork type lifting mechanism 10, a platform 11 and a transmission case 7; a pulley 8 is arranged below the base 8 of the carrying trolley and is matched with the I-beam; the transmission case drives the carrying trolley to move forward along the guide rail assembly, and carries the hydraulic unit support to the empty top area at the front end of the heading machine 14.
In this embodiment, as shown in fig. 7, the hydraulic control system includes an oil suction filter L connected to an oil tank, a hydraulic pump B connected to the oil suction filter L, a high pressure filter C connected to the hydraulic pump B, and a reversing valve D1, a reversing valve D2, a reversing valve D3, and a reversing valve D4 installed at an oil outlet of the high pressure filter C; the oil outlets of the reversing valves are connected with an oil tank through a cooler J and an oil return filter K; the overflow valve I is connected in parallel with the main oil path; two working oil ports of the reversing valve D1 are respectively connected with oil collecting ports of the flow distributing and collecting valve E1 and the flow distributing and collecting valve E2; two working oil ports of the reversing valve D2 are respectively connected with oil collecting ports of the flow distributing and collecting valve E3 and the flow distributing and collecting valve E4; the hydraulic motor G is connected with two working oil ports of the reversing valve D4; the hydraulic cylinder G1 is connected with the oil distributing and collecting valve E1 and the oil distributing and collecting valve E2 through a hydraulic control one-way valve F1, a rodless cavity of the hydraulic cylinder G1 is connected to one oil distributing and collecting valve E1, and a rod cavity of the hydraulic cylinder G is connected to one oil distributing and collecting valve E2; the hydraulic cylinder G2 is connected with the flow dividing and collecting valve E1 and the flow dividing and collecting valve E2 through the hydraulic control one-way valve F2, a rodless cavity of the hydraulic cylinder G2 is connected to one flow dividing and collecting valve E1, and a rod cavity of the hydraulic cylinder G2 is connected to one flow dividing and collecting valve E2; the hydraulic cylinder G3 is connected with the oil distributing and collecting valve E3 and the oil distributing and collecting valve E4 through the hydraulic control one-way valve F3, a rodless cavity of the hydraulic cylinder G3 is connected to one oil distributing and collecting valve E3, and a rod cavity of the hydraulic cylinder G is connected to one oil distributing and collecting valve E4; the hydraulic cylinder G4 is connected with the flow dividing and collecting valve E3 and the flow dividing and collecting valve E4 through the hydraulic control one-way valve F4, a rodless cavity of the hydraulic cylinder G4 is connected to one flow dividing and collecting valve E3, and a rod cavity of the hydraulic cylinder G4 is connected to one flow dividing and collecting valve E4; the hydraulic cylinder G5 is connected with two working oil ports of the reversing valve D3 through a hydraulic control one-way valve F5.
In this embodiment, after the hydraulic system is started, the hydraulic pump B starts to supply fluid to the oil path; before working, the inclination angle of the track is adjusted through the telescopic supporting legs so as to adapt to the uneven bottom plate condition. When the inclination angle needs to be increased, a valve core in the reversing valve D1 moves leftwards, oil enters rodless cavities of the hydraulic cylinder G1 and the hydraulic cylinder G2, and the piston is pushed to move outwards, so that the telescopic supporting leg 4 of the bracket is driven to extend; when the inclination angle needs to be reduced, the valve core in the reversing valve D1 moves rightwards, the hydraulic circuit is changed, and the hydraulic cylinders G1 and the hydraulic cylinders G2 have oil in rod cavities to push the pistons to retract the cylinders, so that the telescopic supporting legs 4 of the bracket are driven to retract. When the hydraulic oil pump works, a valve core in the reversing valve D1 moves leftwards, oil enters rodless cavities of the hydraulic cylinder G3 and the hydraulic cylinder G4, a piston rod is pushed to move outwards, and the front detection I-beam 6 is pushed to extend to a hollow top area at the front end of a tunneling surface; the valve core in the reversing valve D4 moves leftwards, oil flows through the hydraulic motor H1 and the hydraulic motor H2, and the pulley below the base is driven to rotate forwards through the speed reducer, so that the carrying trolley is driven to move forwards; when the trolley moves to the front end of the main I-beam, the rotating direction of the hydraulic motor H in the transmission case 17 is changed by moving the valve core in the reversing valve D4, and then the pulley 8 is driven by the speed reducer to reversely rotate, so that the carrying trolley continues to move forwards on the track built by the extending front I-beam 6 until moving to the forefront end of the hydraulic bracket group; the reversing valve D3 is moved to the left, the extension cylinder 14 with a cylinder body fixed on the base 13 is controlled to extend, and the platform 11 is lifted to support the hydraulic unit bracket through the scissor type lifting mechanism 10; then the reversing valve D3 is moved to the right, and the hydraulic cylinder 14 on the base 13 is controlled to shrink, so that the hydraulic support is slowly put down until the forward movement of the carrying trolley is not affected; finally, a valve core in the reversing valve D4 moves leftwards, oil flows through the hydraulic motor H1 and the hydraulic motor H2, and the pulley 8 below the base 13 is driven to rotate forwards through the speed reducer, so that the carrying trolley is driven to move backwards on a track built by the front-detection I-beam 6; when the trolley 2 moves backwards to the front end of the main I-beam 1, the rotating direction of the hydraulic motor H in the transmission case 17 is changed by moving the valve core in the reversing valve D4, and then the pulley 8 is driven to rotate reversely by the speed reducer, so that the carrying trolley moves backwards on the main I-beam 1 continuously and waits for moving the frame to the lower part of the rearmost hydraulic unit support.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. The carrying device of the hydraulic unit support is characterized by comprising a movable rack guide rail assembly with an adjustable inclination angle and a carrying trolley with a lifting function; the frame moving guide rail assembly comprises a bracket (2) built on a heading machine (14), a main I-beam (1) fixed on the bracket (2), two front-detection I-beams (6), a front-detection I-beam telescopic cylinder (7), two bracket supporting legs (3) and two bracket telescopic supporting legs (4); each forepoling I-beam (6) is respectively and slidably arranged on the bracket (2); the cylinder body of the cantilever beam telescopic cylinder (7) is fixedly connected with the bracket (2), and the piston rod is fixedly connected with the cantilever beam (6); the bracket (2) is hinged with the bracket supporting leg (3) and the bracket telescopic supporting leg (4) respectively; the carrying trolley comprises a base (9) and a transmission case (12); the pulley (8) is arranged below the base (9) of the carrying trolley, the transverse distance between the main I-beam (1) and the single front-detection I-beam (6) is just equal to the diameter of the pulley (8), the gaps between the pulleys (8) on two sides of the carrying trolley along the advancing direction are just matched with the main I-beam (1), the transmission case (12) pushes the carrying trolley to move forwards along the guide rail assembly, and the hydraulic unit support is placed in the empty top area at the front end of the heading machine (14).
2. Handling device for hydraulic unit carriers according to claim 1, characterized in that the lateral clearance of the two drive pulleys (8) of the handling trolley is exactly equal to the thickness of the web of the main i-beam (1).
3. A handling device for hydraulic unit carriers according to claim 1, characterized in that each of said forepoling beams (6) is nested in a recess of the corresponding carrier (2), said recess defining the direction of movement of said forepoling beam (6) when it is extended or retracted.
4. The carrying device of the hydraulic unit support according to claim 1, characterized in that the front-detection i-beam (6) is matched with the main i-beam (1) on the bracket (2) to form a travelling rail of the carrying trolley; the transmission case (12) fixed on the base (9) drives the pulley (8) to rotate, so that the free movement of the carrying trolley on the moving frame guide rail assembly is realized.
5. The handling device of a hydraulic unit rack according to claim 1, characterized in that the handling trolley further comprises a scissor lift mechanism (10), the scissor lift mechanism (10) being adapted to lift the hydraulic unit rack.
6. The carrying device of the hydraulic unit support according to claim 1, wherein the frame moving guide rail assembly further comprises a hydraulic control system, the hydraulic control system comprises an oil suction filter (L) connected with an oil tank, a hydraulic pump (B) connected with the oil suction filter (L), a high-pressure filter (C) connected with the hydraulic pump (B), a reversing valve one (D1), a reversing valve two (D2), a reversing valve three (D3) and a reversing valve four (D4) arranged at an oil outlet of the high-pressure filter (C); the oil outlets of the reversing valves are connected with an oil tank through a cooler (J) and an oil return filter (K); the overflow valve (I) is connected in parallel with the main oil path; two working oil ports of the reversing valve I (D1) are respectively connected with oil collecting ports of the flow distributing and collecting valve I (E1) and the flow distributing and collecting valve II (E2); two working oil ports of the reversing valve II (D2) are respectively connected with oil collecting ports of the flow distributing and collecting valve III (E3) and the flow distributing and collecting valve IV (E4); the first hydraulic motor (H1) and the second hydraulic motor (H2) are connected with two working oil ports of the reversing valve IV (D4); a hydraulic cylinder I (G1) connected with the oil distributing and collecting valve I (E1) and the oil distributing and collecting valve II (E2) through a hydraulic control one-way valve F1, wherein a rodless cavity is connected to one oil distributing and collecting valve I (E1), and a rod cavity is connected to one oil distributing and collecting valve II (E2); a hydraulic cylinder II (G2) connected with the oil distributing and collecting valve I (E1) and the oil distributing and collecting valve II (E2) through a hydraulic control one-way valve II (F2), wherein a rodless cavity is connected to one oil distributing and collecting valve I (E1), and a rod cavity is connected to one oil distributing and collecting valve II (E2); a hydraulic cylinder III (G3) connected with the oil distributing and collecting valve III (E3) and the oil distributing and collecting valve IV (E4) through a hydraulic control check valve III (F3), wherein a rodless cavity is connected to one oil distributing and collecting valve III (E3), and a rod cavity is connected to one oil distributing and collecting valve IV (E4); a hydraulic cylinder IV (G4) connected with the oil distributing and collecting valve III (E3) and the oil distributing and collecting valve IV (E4) through a hydraulic control check valve IV (F4), wherein a rodless cavity is connected to one oil distributing and collecting valve III (E3), and a rod cavity is connected to one oil distributing and collecting valve IV (E4); the hydraulic cylinder five (G5) is connected with two working oil ports of the reversing valve three (D3) through the hydraulic control one-way valve five (F5).
7. A method of controlling a handling device for a hydraulic unit rack according to claim 1, comprising:
s1, starting a hydraulic system, and starting a hydraulic pump (B) to supply liquid to an oil way; when the inclination angle needs to be increased, a valve core in the first reversing valve (D1) moves leftwards, oil enters rodless cavities of the first hydraulic cylinder (G1) and the second hydraulic cylinder (G2), and the piston is pushed to move outwards, so that the telescopic supporting leg (4) is driven to extend; when the inclination angle needs to be reduced, a valve core in the first reversing valve (D1) moves rightwards, a hydraulic circuit is changed, and oil in rod cavities of the first hydraulic cylinder (G1) and the second hydraulic cylinder (G2) pushes a piston to retract into a cylinder body, so that the telescopic supporting leg (4) is driven to shrink;
s2, a valve core in the first reversing valve (D1) moves leftwards, oil enters rodless cavities of a third hydraulic cylinder (G3) and a fourth hydraulic cylinder (G4), a piston rod is pushed to move outwards, and a front detection I-shaped beam (6) is pushed to extend to a hollow top area at the front end of a tunneling surface; the valve core in the reversing valve IV (D4) moves leftwards, oil flows through the hydraulic motor I (H1) and the hydraulic motor II (H2), and the pulley (8) below the base is driven to rotate forwards through the speed reducer, so that the carrying trolley is driven to move forwards; when the trolley moves to the front end of the main I-beam (1), the rotation direction of a first hydraulic motor (H1) and a second hydraulic motor (H2) in the transmission case is changed by moving a valve core in a fourth reversing valve (D4), and then a pulley (8) is driven to reversely rotate by a speed reducer, so that the trolley continues to move forwards on a track built after the front I-beam (6) stretches out until the trolley moves to the forefront end of the hydraulic bracket group;
s3, the reversing valve III (D3) moves to the left position, the hydraulic cylinder V (G5) fixed on the base (9) is controlled to extend, and the platform (11) is lifted to support the hydraulic support through the scissor type lifting mechanism (10); then the reversing valve III (D3) moves to the right, and the hydraulic cylinder V (G5) on the base (9) is controlled to shrink, so that the hydraulic support is slowly put down until the forward movement of the carrying trolley is not influenced; finally, a valve core in the reversing valve IV (D4) moves leftwards, oil flows through the first hydraulic motor (H1) and the second hydraulic motor (H2), and the pulley (8) below the base (9) is driven to rotate forwards through the speed reducer, so that the carrying trolley is driven to move backwards on a track built by the front detection I-beam (6); when the trolley moves backwards to the front end of the main I-beam (1), the rotation direction of the first hydraulic motor (H1) and the second hydraulic motor (H2) in the transmission case (12) is changed by moving the valve core in the fourth reversing valve (D4), and then the pulley (8) is driven to rotate reversely through the speed reducer, so that the trolley continues to move backwards on the main I-beam (1) until the trolley moves below the rearmost hydraulic unit support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111560571.7A CN114278367B (en) | 2021-12-20 | 2021-12-20 | Carrying device of hydraulic unit support and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111560571.7A CN114278367B (en) | 2021-12-20 | 2021-12-20 | Carrying device of hydraulic unit support and control method thereof |
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| CN114278367A CN114278367A (en) | 2022-04-05 |
| CN114278367B true CN114278367B (en) | 2024-02-23 |
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| CN115432638A (en) * | 2022-09-16 | 2022-12-06 | 中国煤炭科工集团太原研究院有限公司 | Unit support carrier and suspension scissor type carrying device thereof |
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