CN109869171B - Stable hydraulic prop with dustproof function for coal mine support - Google Patents
Stable hydraulic prop with dustproof function for coal mine support Download PDFInfo
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- CN109869171B CN109869171B CN201910171225.6A CN201910171225A CN109869171B CN 109869171 B CN109869171 B CN 109869171B CN 201910171225 A CN201910171225 A CN 201910171225A CN 109869171 B CN109869171 B CN 109869171B
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Abstract
The invention relates to a stable hydraulic prop with a dustproof function for a coal mine support, which comprises a plunger, a hydraulic cylinder, a dustproof mechanism and a reinforcing mechanism, wherein the reinforcing mechanism comprises a transmission sleeve, a bottom plate, four support components and two first driving components, the dustproof mechanism comprises a lifting sleeve, a top plate, a dustproof curtain, a limiting ring, an annular groove and two second driving components, the plunger is covered by the dustproof mechanism in the stable hydraulic prop with the dustproof function for the coal mine support, so that the accumulation of dust on the plunger is reduced, the smoothness of plunger return is improved, the failure rate of the hydraulic prop is reduced, the contact area between the hydraulic prop and the ground is increased under the action of the reinforcing mechanism, the pressure of the hydraulic prop on the ground is reduced, the stability of the hydraulic prop is improved, and the probability of ground settlement is reduced, the practicability of the hydraulic prop is improved.
Description
Technical Field
The invention relates to the field of coal mining equipment, in particular to a stable hydraulic prop with a dustproof function for a coal mine support.
Background
The hydraulic prop is a single telescopic prop which generates working resistance by utilizing liquid pressure and realizes prop lifting and unloading, the single hydraulic prop is mainly divided into a suspension type, a double-telescopic suspension type, a DN inner injection type and a glass fiber reinforced plastic single hydraulic prop, the single hydraulic prop is composed of parts such as a cylinder body, a movable prop, a valve and the like, wherein the three-way valve is the heart of the outer injection type single hydraulic prop and is composed of a one-way valve, an unloading valve and a safety valve king part, the one-way valve is used for supplying liquid to the single hydraulic prop, the unloading valve is used for unloading the single hydraulic prop, and the safety valve ensures that the single hydraulic prop has constant resistance.
Hydraulic prop is as one kind of colliery fluting equipment, the security of coal mining has been improved greatly, at present, geological adjustment to some soft rock bottom plates, be difficult to stable support hydraulic prop, cause the hydraulic prop to appear sinking phenomenon, can not play good supporting effect, moreover, the inside environment in colliery is comparatively abominable, after the post alive of hydraulic prop rises, adhesion dust on the post alive, when the dust accumulates to a certain amount, it is slow to cause the post alive to return easily, cause the post alive not to return even, then the life of post alive has been shortened
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the stable hydraulic prop with the dustproof function for the coal mine support is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a stable hydraulic prop with a dustproof function for supporting a coal mine comprises a plunger and a hydraulic cylinder, and further comprises a dustproof mechanism and a reinforcing mechanism, wherein the dustproof mechanism is arranged on the plunger, and the reinforcing mechanism is arranged on the hydraulic cylinder;
the reinforcing mechanism comprises a transmission sleeve, a bottom plate, four supporting assemblies and two first driving assemblies, wherein the bottom plate is perpendicular to the axis of the hydraulic cylinder, the bottom plate is fixed at one end, far away from the plunger, of the hydraulic cylinder, the transmission sleeve is coaxially arranged with the hydraulic cylinder, the hydraulic cylinder penetrates through the transmission sleeve, the transmission sleeve is in sliding connection with the hydraulic cylinder, the four supporting assemblies are uniformly arranged in the circumferential direction around the axis of the hydraulic cylinder, the supporting assemblies are connected with the bottom plate, the two driving assemblies are symmetrically arranged relative to the axis of the hydraulic cylinder, the driving assemblies are arranged on the hydraulic cylinder, and the driving assemblies are connected with the transmission sleeve;
the dustproof mechanism comprises a lifting sleeve, a top plate, a dustproof curtain, a limiting ring, an annular groove and two second driving components, wherein the top plate is vertical to the axis of the movable column, the top plate is fixed at one end of the movable column, which is far away from the hydraulic cylinder, the dustproof curtain is cylindrical, the movable column is arranged in the dustproof curtain, one end of the dustproof curtain is fixedly connected with one end of the hydraulic cylinder, which is far away from the bottom plate, the lifting sleeve is coaxially arranged with the movable column, the movable column penetrates through the lifting sleeve, the other end of the dustproof curtain is fixedly connected with the lifting sleeve, the two second driving components are respectively arranged at two ends of one side of the top plate, which is close to the movable column, the two second driving components are symmetrically arranged about the axis of the movable column, the two second driving components are both connected with the lifting sleeve, the annular groove and the limiting ring are both coaxially arranged with the movable column, the limiting ring is fixed at one side of the lifting sleeve, which is far away from the dustproof curtain, the annular groove is formed in one side, close to the plunger, of the top plate, the limiting ring is matched with the annular groove, and the limiting ring is arranged inside the annular groove.
Preferably, in order to provide power for the transmission rod sleeve, the first driving assembly comprises a first motor, a driving block and a screw rod, the screw rod is parallel to the axis of the hydraulic cylinder, bearings are arranged at two ends of the screw rod, the screw rod is fixedly connected with the hydraulic cylinder through the bearings, the driving block is fixed on one side of the transmission sleeve, a through hole is formed in the driving block, the screw rod penetrates through the driving block, the screw rod is in threaded connection with the driving block, the first motor is fixed on the bottom plate, and the first motor is in transmission connection with the screw rod.
Preferably, in order to improve the stability of the hydraulic prop, the support assembly comprises a support plate and a transmission rod, the support plate is arranged on one side of the hydraulic cylinder, one end of the support plate is hinged to one end of the bottom plate, one end of the transmission rod is hinged to one side, close to the support plate, of the transmission sleeve, and the other end of the transmission rod is hinged to the middle of one side, close to the hydraulic cylinder, of the support plate.
Preferably, in order to provide power for the lifting sleeve, the second driving assembly comprises a second motor, a roller and a connecting line, the second motor is fixed on one side of the top plate close to the plunger, the second motor is in transmission connection with the roller, one end of the connecting line is wound on the periphery of the roller, and the other end of the connecting line is fixedly connected with the lifting sleeve.
Preferably, in order to improve the sealing performance between the limiting ring and the top plate, a rubber ring is arranged on one side, close to the top plate, of the limiting ring, and the limiting ring is connected with the inner wall of the annular groove in a sealing mode through the rubber ring.
Preferably, in order to reduce the load of the second motor, at least two first permanent magnets are arranged on the top plate, at least two second permanent magnets are arranged on the lifting sleeve, the number of the first permanent magnets is equal to that of the second permanent magnets, the first permanent magnets correspond to the second permanent magnets one to one, and the polarities of the sides, close to each other, of the first permanent magnets are opposite to that of the sides, close to each other, of the second permanent magnets.
Preferably, in order to prolong the service life of the hydraulic cylinder, the hydraulic cylinder is coated with an anti-corrosion zinc coating.
Preferably, for the stability of the hydraulic prop, the sides of the top plate and the bottom plate away from each other are provided with anti-slip threads.
Preferably, in order to improve the driving capability of the first motor, the first motor is a servo motor.
Preferably, the screw is coated with grease in order to improve the smoothness of the movement of the driving block.
The invention has the advantages that in the stable hydraulic prop with the dustproof function for supporting the coal mine, the movable post can be covered by the dustproof mechanism, thereby reducing the accumulation of dust on the movable post, improving the smoothness of the movable post returning, and reducing the fault rate of the hydraulic prop, compared with the existing dustproof mechanism, the dustproof mechanism reduces the probability of dust entering the dustproof curtain from the position between the lifting sleeve and the top plate through the action of the annular groove and the limiting ring, further improving the dustproof performance of the hydraulic prop, moreover, under the action of the reinforcing mechanism, the contact area between the hydraulic prop and the ground is increased, the pressure of the hydraulic prop on the ground is reduced, the stability of the hydraulic prop is improved, the probability of ground settlement is reduced, the practicability of the hydraulic prop is improved, compared with the existing reinforcing mechanism, the reinforcing mechanism is simple in structure, the number of failure points of the mechanism is reduced, and the failure probability of the mechanism is reduced.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the construction of a stabilized hydraulic prop with dust control for a coal mine support of the present invention;
FIG. 2 is a schematic structural view of the reinforcement mechanism of the stabilized hydraulic prop with dust prevention function for coal mine support of the present invention;
FIG. 3 is a schematic structural diagram of a dust prevention mechanism of the stabilized hydraulic prop with dust prevention function for coal mine support according to the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
in the figure: 1. the automatic lifting device comprises a dustproof curtain, 2 parts of a driving block, 3 parts of a screw rod, 4 parts of a first motor, 5 parts of a bottom plate, 6 parts of a top plate, 7 parts of a lifting sleeve, 8 parts of a movable column, 9 parts of a hydraulic cylinder, 10 parts of a transmission sleeve, 11 parts of a transmission rod, 12 parts of a supporting plate, 13 parts of a connecting wire, 14 parts of a roller, 15 parts of a second motor, 16 parts of a rubber ring, 17 parts of an annular groove, 18 parts of a first permanent magnet, 19 parts of a second permanent magnet and 20 parts of a limiting ring.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, a stable hydraulic prop with a dust-proof function for supporting a coal mine comprises a plunger 8 and a hydraulic cylinder 9, and further comprises a dust-proof mechanism and a reinforcing mechanism, wherein the dust-proof mechanism is arranged on the plunger 8, and the reinforcing mechanism is arranged on the hydraulic cylinder 9;
through the dustproof mechanism, the movable column 8 can be covered, so that the accumulation of dust on the movable column 8 is reduced, the smoothness of the movable column 8 returning to the column is improved, the fault rate of the hydraulic prop is reduced, and moreover, under the action of the reinforcing mechanism, the contact area between the hydraulic prop and the ground is increased, so that the pressure of the hydraulic prop on the ground is reduced, the stability of the hydraulic prop is improved, the probability of ground settlement is reduced, and the practicability of the hydraulic prop is improved;
as shown in fig. 2, the reinforcing mechanism includes a transmission sleeve 10, a bottom plate 5, four support assemblies and two first driving assemblies, wherein the bottom plate 5 is perpendicular to the axis of the hydraulic cylinder 9, the bottom plate 5 is fixed at one end of the hydraulic cylinder 9 far away from the plunger 8, the transmission sleeve 10 is coaxially arranged with the hydraulic cylinder 9, the hydraulic cylinder 9 passes through the transmission sleeve 10, the transmission sleeve 10 is slidably connected with the hydraulic cylinder 9, the four support assemblies are circumferentially and uniformly arranged around the axis of the hydraulic cylinder 9, the support assemblies are connected with the bottom plate 5, the two driving assemblies are symmetrically arranged around the axis of the hydraulic cylinder 9, the driving assemblies are arranged on the hydraulic cylinder 9, and the driving assemblies are connected with the transmission sleeve 10;
the user can drive the transmission sleeve 10 to be uniformly stressed under the action of the two first driving assemblies by operating the hydraulic prop, so that the stability of the transmission sleeve 10 is improved, then the transmission sleeve 10 is driven to ascend and descend along the hydraulic cylinder 9 by the first driving assemblies, when the transmission sleeve 10 descends, each supporting assembly can be driven to be supported, the contact area between the hydraulic prop and the ground is increased by each supporting assembly, the pressure of the hydraulic prop on the ground is reduced, the stability of the hydraulic prop is improved, the probability of ground settlement is reduced, the practicability of the hydraulic prop is improved, when the transmission sleeve 10 ascends, each supporting assembly can be driven to be folded, the size of the hydraulic prop is reduced, and the convenience of accommodating the hydraulic prop is improved;
as shown in fig. 3-4, the dustproof mechanism includes a lifting sleeve 7, a top plate 6, a dustproof curtain 1, a limiting ring 20, an annular groove 17 and two second driving components, the top plate 6 is perpendicular to the axis of the plunger 8, the top plate 6 is fixed on one end of the plunger 8 far away from the hydraulic cylinder 9, the dustproof curtain 1 is cylindrical, the plunger 8 is arranged inside the dustproof curtain 1, one end of the dustproof curtain 1 is fixedly connected with one end of the hydraulic cylinder 9 far away from the bottom plate 5, the lifting sleeve 7 is coaxially arranged with the plunger 8, the plunger 8 passes through the lifting sleeve 7, the other end of the dustproof curtain 1 is fixedly connected with the lifting sleeve 7, the two second driving components are respectively arranged at two ends of one side of the top plate 6 near the plunger 8, the two second driving components are symmetrically arranged about the axis of the plunger 8, and both the two second driving components are connected with the lifting sleeve 7, the annular groove 17 and the limiting ring 20 are coaxially arranged with the plunger 8, the limiting ring 20 is fixed on one side of the lifting sleeve 7 far away from the dustproof curtain 1, the annular groove 17 is arranged on one side of the top plate 6 close to the plunger 8, the limiting ring 20 is matched with the annular groove 17, and the limiting ring 20 is arranged inside the annular groove 17;
under the supporting action of roof 6, the stability of two second drive assembly has been improved, drive lift sleeve 7 through two second drive assembly simultaneously and go up and down along the post 8 that lives, make lift sleeve 7 atress even, the stability of lift sleeve 7 has been improved, when lift sleeve 7 rises, through lift sleeve 7 drive dustproof curtain 1 rise, then under dustproof curtain 1 is to the protective action of post 8 that lives, the accumulation of dust on the post 8 that lives has been reduced, the smooth and easy degree of post 8 that lives back has been improved, the fault rate of hydraulic prop has been reduced, when lift sleeve 7 supports and leans on roof 6, spacing ring 20 inserts the inside of ring channel 17, then the stability that lift sleeve 7 and roof 6 are connected has been improved, when lift sleeve 7 descends, pack up dustproof curtain 1 through lift sleeve 7, then the convenient degree of post 8 maintenance has been improved.
As shown in fig. 2, the first driving assembly includes a first motor 4, a driving block 2 and a screw rod 3, the screw rod 3 is parallel to an axis of a hydraulic cylinder 9, bearings are arranged at both ends of the screw rod 3, the screw rod 3 is fixedly connected with the hydraulic cylinder 9 through the bearings, the driving block 2 is fixed at one side of a transmission sleeve 10, a through hole is arranged inside the driving block 2, the screw rod 3 penetrates through the driving block 2, the screw rod 3 is in threaded connection with the driving block 2, the first motor 4 is fixed on a bottom plate 5, and the first motor 4 is in transmission connection with the screw rod 3;
the first motor 4 drives the screw rod 3 to rotate, the screw rod 3 drives the driving block 2 to lift, and the driving block 2 drives the transmission sleeve 10 to move along the hydraulic cylinder 9.
As shown in fig. 2, the support assembly comprises a support plate 12 and a transmission rod 11, the support plate 12 is arranged on one side of the hydraulic cylinder 9, one end of the support plate 12 is hinged with one end of the bottom plate 5, one end of the transmission rod 11 is hinged with one side of the transmission sleeve 10 close to the support plate 12, and the other end of the transmission rod 11 is hinged with the middle of one side of the support plate 12 close to the hydraulic cylinder 9;
when the transmission sleeve 10 descends, under the action of the transmission rod 11, the driving support plate 12 rotates to the horizontal state around the hinge point with the bottom plate 5, the support plate 12 can be supported, and when the transmission sleeve 10 ascends, under the action of the transmission rod 11, the driving support plate 12 rotates to the vertical state around the hinge point with the bottom plate 5, and the support plate 12 can be folded.
As shown in fig. 3, the second driving assembly comprises a second motor 15, a drum 14 and a connecting line 13, the second motor 15 is fixed on one side of the top plate 6 close to the plunger 8, the second motor 15 is in transmission connection with the drum 14, one end of the connecting line 13 is wound on the outer periphery of the drum 14, and the other end of the connecting line 13 is fixedly connected with the lifting sleeve 7;
through second motor 15 drive roller 14 rotation, then realized receiving and releasing of connecting wire 13 through roller 14, when connecting wire 13 shortens, rise through connecting wire 13 drive lift sleeve 7, when connecting wire 13 loosens, make connecting wire 13 reduce to lift sleeve 7's pulling force, then under the effect of gravity, drive lift sleeve 7 descends.
Preferably, in order to improve the sealing performance between the limiting ring 20 and the top plate 6, a rubber ring 16 is arranged on one side of the limiting ring 20 close to the top plate 6, and the limiting ring 20 is connected with the inner wall of the annular groove 17 in a sealing manner through the rubber ring 16;
the rubber ring 16 reduces the gap between the limiting ring 20 and the inner wall of the annular groove 17, and the probability of dust entering the interior of the dust curtain 1 from the gap between the lifting sleeve 7 and the top plate 6 is reduced.
Preferably, in order to reduce the load of the second motor 15, at least two first permanent magnets 18 are arranged on the top plate 6, at least two second permanent magnets 19 are arranged on the lifting sleeve 7, the number of the first permanent magnets 18 is equal to that of the second permanent magnets 19, the first permanent magnets 18 correspond to the second permanent magnets 19 one by one, and the polarities of the sides, close to each other, of the first permanent magnets 18 and the second permanent magnets 19 are opposite;
by offsetting a portion of the weight of the elevator shaft 7 by the attractive force between the first permanent magnet 18 and the second permanent magnet 19, the power required by the second motor 15 to maintain the current state of the elevator shaft 7 is reduced, and the load on the second motor 15 is reduced.
Preferably, in order to prolong the service life of the hydraulic cylinder 9, an anti-corrosion zinc coating is coated on the hydraulic cylinder 9;
the corrosion-resistant zinc coating slows down the corrosion speed of the hydraulic cylinder 9, and the service life of the hydraulic cylinder 9 is prolonged.
Preferably, in order to improve the stability of the hydraulic prop, the sides of the top plate 6 and the bottom plate 5 which are far away from each other are provided with anti-skid grains;
the friction between the top plate 6 and the bottom plate 5 and the mine wall is increased through the anti-slip lines, and the stability of the hydraulic prop is improved.
Preferably, the first motor 4 is a servo motor in order to improve the driving ability of the first motor 4.
Preferably, in order to improve the smoothness of the movement of the driving block 2, the screw rod 3 is coated with grease;
the friction force between the driving block 2 and the screw rod 3 is reduced through the lubricating grease, and the smoothness of the movement of the driving block 2 is improved.
Through first drive assembly drive transmission sleeve 10 along pneumatic cylinder 9 lift, when transmission sleeve 10 descends, can drive each supporting component and prop up, then increased the area of contact between hydraulic prop and the ground through each supporting component, then reduced the pressure that hydraulic prop produced to ground, the stability of hydraulic prop has not only been improved, the probability that ground takes place to subside has still been reduced, hydraulic prop's practicality has been improved, it goes up and down along the post 8 to drive lift sleeve 7 simultaneously through two second drive assemblies, when lift sleeve 7 rises, through lift sleeve 7 drive dustproof curtain 1 rise, then under the protective action of dustproof curtain 1 to post 8, the accumulation of dust on the post 8 has been reduced, the smooth and easy degree of post 8 that returns has been improved, the fault rate of hydraulic prop has been reduced.
Compared with the prior art, in the stable hydraulic prop with the dustproof function for supporting the coal mine, the movable post 8 can be covered by the dustproof mechanism, so that the accumulation of dust on the movable post 8 is reduced, the smoothness of the return of the movable post 8 to the post is improved, and the fault rate of the hydraulic prop is reduced, compared with the existing dustproof mechanism, the dustproof mechanism reduces the probability of dust entering the dustproof curtain 1 from the position between the lifting sleeve 7 and the top plate 6 through the action of the annular groove 17 and the limiting ring 20, further improves the dustproof performance of the hydraulic prop, not only increases the contact area between the hydraulic prop and the ground under the action of the reinforcing mechanism, reduces the pressure of the hydraulic prop to the ground, improves the stability of the hydraulic prop, but also reduces the probability of ground settlement, improves the practicability of the hydraulic prop, compared with the existing reinforcing mechanism, the reinforcing mechanism is simple in structure, the number of failure points of the mechanism is reduced, and the failure probability of the mechanism is reduced.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A stable hydraulic prop with a dustproof function for supporting a coal mine comprises a plunger (8) and a hydraulic cylinder (9), and is characterized by further comprising a dustproof mechanism and a reinforcing mechanism, wherein the dustproof mechanism is arranged on the plunger (8), and the reinforcing mechanism is arranged on the hydraulic cylinder (9);
the reinforcing mechanism comprises a transmission sleeve (10), a bottom plate (5), four supporting assemblies and two first driving assemblies, wherein the bottom plate (5) is perpendicular to the axis of a hydraulic cylinder (9), the bottom plate (5) is fixed at one end, far away from a plunger (8), of the hydraulic cylinder (9), the transmission sleeve (10) and the hydraulic cylinder (9) are coaxially arranged, the hydraulic cylinder (9) penetrates through the transmission sleeve (10), the transmission sleeve (10) is in sliding connection with the hydraulic cylinder (9), the four supporting assemblies are uniformly arranged around the axis of the hydraulic cylinder (9) in the circumferential direction, the supporting assemblies are connected with the bottom plate (5), the two driving assemblies are symmetrically arranged relative to the axis of the hydraulic cylinder (9), the driving assemblies are arranged on the hydraulic cylinder (9), and the driving assemblies are connected with the transmission sleeve (10);
the dustproof mechanism comprises a lifting sleeve (7), a top plate (6), a dustproof curtain (1), a limiting ring (20), an annular groove (17) and two second driving components, wherein the top plate (6) is vertical to the axis of a movable column (8), the top plate (6) is fixed at one end of the movable column (8) far away from a hydraulic cylinder (9), the dustproof curtain (1) is cylindrical in shape, the movable column (8) is arranged inside the dustproof curtain (1), one end of the dustproof curtain (1) is fixedly connected with one end of the hydraulic cylinder (9) far away from a bottom plate (5), the lifting sleeve (7) and the movable column (8) are coaxially arranged, the movable column (8) penetrates through the lifting sleeve (7), the other end of the dustproof curtain (1) is fixedly connected with the lifting sleeve (7), the two second driving components are respectively arranged at two ends of one side, close to the movable column (8), of the top plate (6), two second drive assembly all are connected with lift sleeve (7) about the axis symmetry setting of post (8) alive, two second drive assembly, ring channel (17) and spacing ring (20) all with post (8) coaxial setting alive, one side of keeping away from dustproof curtain (1) in lift sleeve (7) is fixed in spacing ring (20), ring channel (17) set up the one side that is close to post (8) alive in roof (6), spacing ring (20) match with ring channel (17), spacing ring (20) set up the inside in ring channel (17).
2. The stable hydraulic prop with the dustproof function for the coal mine support is characterized in that the first driving assembly comprises a first motor (4), a driving block (2) and a screw rod (3), the screw rod (3) is parallel to the axis of a hydraulic cylinder (9), bearings are arranged at two ends of the screw rod (3), the screw rod (3) is fixedly connected with the hydraulic cylinder (9) through the bearings, the driving block (2) is fixed at one side of a transmission sleeve (10), a through hole is formed in the driving block (2), the screw rod (3) penetrates through the driving block (2), the screw rod (3) is in threaded connection with the driving block (2), the first motor (4) is fixed on a bottom plate (5), and the first motor (4) is in transmission connection with the screw rod (3).
3. A stabilized hydraulic prop with dust protection for coal mine supports according to claim 1, characterized in that the support assembly comprises a support plate (12) and a drive rod (11), the support plate (12) being arranged on one side of the hydraulic cylinder (9), one end of the support plate (12) being hinged to one end of the bottom plate (5), one end of the drive rod (11) being hinged to one side of the drive sleeve (10) close to the support plate (12), the other end of the drive rod (11) being hinged to the middle of the side of the support plate (12) close to the hydraulic cylinder (9).
4. A stabilized hydraulic prop with dust protection for coal mine supports according to claim 1, characterized in that the second drive assembly comprises a second motor (15), a roller (14) and a connecting wire (13), the second motor (15) is fixed on the side of the top plate (6) close to the plunger (8), the second motor (15) is in transmission connection with the roller (14), one end of the connecting wire (13) is wound on the periphery of the roller (14), and the other end of the connecting wire (13) is fixedly connected with the lifting sleeve (7).
5. A stabilized hydraulic prop with dust protection for coal mine supports according to claim 1, characterized in that a rubber ring (16) is provided on the side of the stop collar (20) close to the top plate (6), and the stop collar (20) is sealingly connected to the inner wall of the annular groove (17) via the rubber ring (16).
6. A stabilized hydraulic prop with a dustproof function for coal mine support according to claim 1, characterized in that at least two first permanent magnets (18) are provided on the top plate (6), at least two second permanent magnets (19) are provided on the lifting sleeve (7), the number of the first permanent magnets (18) and the number of the second permanent magnets (19) are equal, the first permanent magnets (18) and the second permanent magnets (19) are in one-to-one correspondence, and the polarities of the sides of the first permanent magnets (18) and the second permanent magnets (19) close to each other are opposite.
7. A stabilized hydraulic prop with dust control for coal mine supports according to claim 1, characterized in that the hydraulic cylinder (9) is coated with an anti-corrosion zinc coating.
8. A stabilized hydraulic prop for coal mine support having dust control according to claim 1, characterised in that the mutually remote sides of the top and bottom plates (6, 5) are provided with anti-slip threads.
9. A stabilized hydraulic prop with dust control for coal mine supports according to claim 2, characterized in that the first motor (4) is a servo motor.
10. A stabilized hydraulic prop with dust control for coal mine supports according to claim 2, characterized in that the screw (3) is coated with grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171225.6A CN109869171B (en) | 2019-03-07 | 2019-03-07 | Stable hydraulic prop with dustproof function for coal mine support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171225.6A CN109869171B (en) | 2019-03-07 | 2019-03-07 | Stable hydraulic prop with dustproof function for coal mine support |
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| CN109869171A CN109869171A (en) | 2019-06-11 |
| CN109869171B true CN109869171B (en) | 2021-08-31 |
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| CN201910171225.6A Active CN109869171B (en) | 2019-03-07 | 2019-03-07 | Stable hydraulic prop with dustproof function for coal mine support |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110630299B (en) * | 2019-09-26 | 2021-06-15 | 山东博士乐液压有限公司 | Place stable dust-protection type hydraulic prop |
| CN112664245B (en) * | 2020-12-18 | 2022-11-15 | 临沂会宝岭铁矿有限公司 | Roof support protection structure for mining and use method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2937479Y (en) * | 2006-05-26 | 2007-08-22 | 梁海庆 | Dust-proof ring of coal mine hydraulic prop |
| CN201193531Y (en) * | 2008-04-28 | 2009-02-11 | 中国矿业大学 | Protection type suspending hydraulic prop |
| CN106285738B (en) * | 2016-09-28 | 2018-10-16 | 山东科技大学 | A kind of " steel reinforced concrete-hydraulic pressure " roadside support device and method for protecting support for deep tunnel |
| CN107013076B (en) * | 2017-05-23 | 2019-07-05 | 重庆怡能科信实业有限公司 | A kind of communication steel tower with wind-shielding function |
| CN108643677A (en) * | 2018-08-15 | 2018-10-12 | 南安市柳信光电科技有限公司 | A kind of movement easily communication base station |
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