CN214364982U - Hydraulic support - Google Patents
Hydraulic support Download PDFInfo
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- CN214364982U CN214364982U CN202023309305.0U CN202023309305U CN214364982U CN 214364982 U CN214364982 U CN 214364982U CN 202023309305 U CN202023309305 U CN 202023309305U CN 214364982 U CN214364982 U CN 214364982U
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Abstract
The hydraulic support comprises a body, wherein the body is rotatably connected with a first mounting plate, the first mounting plate is fixedly connected with a first hydraulic cylinder, the first mounting plate is fixedly connected with a first worm gear, the axis of the first worm gear is coaxial with a rotating shaft of the first mounting plate, the body is rotatably connected with a first worm and a first driving assembly for driving the first worm to rotate, and the first worm is meshed with the first worm gear; the fuselage rotates and is connected with the second mounting panel, second mounting panel fixedly connected with second pneumatic cylinder, second mounting panel fixedly connected with second worm wheel, and second worm wheel axis is coaxial with second mounting panel pivot, and the fuselage rotates and is connected with the second worm and drives second worm pivoted second drive assembly, second worm and second worm wheel intermeshing. Through the scheme, abrasion of one side of the piston in the hydraulic cylinder is avoided, and the service life of the hydraulic cylinder is prolonged.
Description
Technical Field
The application relates to the technical field of construction equipment, and more particularly relates to a hydraulic support.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems.
The hydraulic support utilizes the support of the hydraulic cylinder doing work, is usually used for installing the guide wall template, and the two hydraulic cylinders are vertically arranged, so that the guide wall template in two vertical directions can be conveniently done with work at the same time, and the two vertical hydraulic cylinders are respectively used as a transverse hydraulic support and a longitudinal hydraulic support.
However, in the actual installation process of the guide wall template, the guide wall template is manually placed, so that the stress direction of the hydraulic cylinder is different from the telescopic direction of the hydraulic cylinder, one side of a piston in the hydraulic cylinder is abraded, the service life of the hydraulic cylinder is shortened, and the angle between the working directions of the hydraulic cylinder cannot be adjusted.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the purpose of this application is to provide a hydraulic support, has the advantage that can prolong the life of pneumatic cylinder.
The technical purpose of the application is realized by the following technical scheme: a hydraulic support comprises a body, wherein the body is rotatably connected with a first mounting plate, the first mounting plate is fixedly connected with a first hydraulic cylinder, the first mounting plate is fixedly connected with a first worm wheel, the axis of the first worm wheel is coaxial with the rotating shaft of the first mounting plate, the body is rotatably connected with a first worm and a first driving assembly for driving the first worm to rotate, and the first worm is meshed with the first worm wheel;
the fuselage rotates and is connected with the second mounting panel, second mounting panel fixedly connected with second pneumatic cylinder, second mounting panel fixedly connected with second worm wheel, second worm wheel axis with the second mounting panel pivot is coaxial, the fuselage rotates and is connected with second worm and drive second worm pivoted second drive assembly, the second worm with second worm wheel intermeshing.
According to the technical scheme, in the process of installing the guide wall template, the end part of the piston rod of the first hydraulic cylinder is fixed with the guide template, the piston rod of the second hydraulic cylinder is fixed with the other guide template, the first driving assembly drives the first worm to rotate, the first worm drives the first worm wheel to rotate, the first worm wheel drives the first mounting plate to rotate, and the first mounting plate drives the first hydraulic cylinder to rotate to adjust the position of the axis of the first hydraulic cylinder, so that the stress direction of the first hydraulic cylinder is controlled;
the second driving assembly drives the second worm to rotate, the second worm drives the second worm wheel to rotate, the second worm wheel drives the second mounting plate to rotate, the second mounting plate drives the second hydraulic cylinder to rotate to adjust the angular position of the axis of the second hydraulic cylinder, thereby controlling the stress direction of the second hydraulic cylinder, and simultaneously controlling the angle between the acting direction of the first hydraulic cylinder and the acting direction of the second hydraulic cylinder.
Preferably, the first driving assembly comprises a first cylindrical gear coaxially and fixedly connected to the first worm, the machine body is rotatably connected with a second cylindrical gear, the first cylindrical gear and the second cylindrical gear are meshed with each other, and the machine body is provided with a first driving piece for driving the second cylindrical gear to rotate;
the second driving assembly comprises a third cylindrical gear which is coaxially and fixedly connected with the second worm, the machine body is rotatably connected with a fourth cylindrical gear, the third cylindrical gear is meshed with the fourth cylindrical gear, and a second driving piece for driving the fourth cylindrical gear to rotate is arranged on the machine body.
Through the technical scheme, the first driving piece drives the second cylindrical gear to rotate, the second cylindrical gear drives the first cylindrical gear to rotate, and the first cylindrical gear drives the first worm to rotate;
the second driving piece drives the fourth cylindrical gear to rotate, the fourth cylindrical gear drives the second cylindrical gear to rotate, the second cylindrical gear drives the second worm to rotate, the rotating speeds of the first worm and the second worm are controlled through cooperation between the cylindrical gears, and the accuracy of the first hydraulic cylinder and the accuracy of the second hydraulic cylinder are controlled and adjusted.
Preferably, the first cylindrical gear, the second cylindrical gear, the third cylindrical gear and the fourth cylindrical gear are helical cylindrical gears.
Through above-mentioned technical scheme, helical gear has the advantage that the transmission is stable and the noise is little.
Preferably, the first driving member is a first rotating disc coaxially and fixedly connected to the second cylindrical gear, the first rotating disc is provided with a first handle, and the first driving member further comprises a first locking component for locking the first rotating disc;
the second driving piece is a second turntable which is coaxially and fixedly connected to the fourth cylindrical gear, a second handle is installed on the second turntable, and the second driving piece further comprises a second locking assembly used for locking the second turntable.
Through the technical scheme, the first rotating disc is rotated by using the first handle, but when the first rotating disc does not need to be rotated, the first rotating disc is locked by the first locking component;
the second handle is used to rotate the first rotary disk, but the second rotary disk is not required to be rotated, and the second rotary disk is locked through the second locking component.
Preferably, the first locking assembly comprises a first fixed disc connected to the machine body, the first fixed disc is coaxial with the first fixed disc, the first fixed disc is connected with a first ejector rod in a sliding mode, the first ejector rod abuts against a first elastic part between the first fixed disc and the first fixed disc, the first fixed disc is uniformly provided with first grooves around the axis of the first fixed disc, and when the first elastic part is in a natural state, one end of the first ejector rod is embedded into the first grooves;
the second locking assembly comprises a second fixed disc connected to the machine body, the second fixed disc is coaxial with the second rotary disc, a second ejector rod is connected to the second rotary disc in a sliding mode, the second ejector rod is abutted to a second elastic piece between the second rotary disc, the second fixed disc is wound around a second groove is evenly formed in the axis of the second fixed disc, and when the second elastic piece is in a natural state, one end of the second ejector rod is embedded into the second groove.
Through the technical scheme, when the first rotary disc needs to be rotated, the first ejector rod is pulled up to pull the first elastic piece to deform under stress, so that the end part of the first ejector rod is separated from the first groove in the first fixed disc, and after the first rotary disc is rotated to a proper position, the first ejector rod is loosened, and the first ejector rod receives the elastic force of the first elastic piece to enable the end part of the first ejector rod to be embedded into the first groove to prevent the first rotary disc from rotating;
when the second turntable needs to be rotated, the second ejector rod is pulled up to enable the second elastic piece to be stressed and deformed, so that the end portion of the second ejector rod is separated from the second groove in the second fixed disc, the second ejector rod is loosened after the second turntable is rotated to a proper position, and the end portion of the second ejector rod is embedded into the first groove to prevent the second turntable from rotating after the second ejector rod receives the elastic force of the second elastic piece.
Preferably, the first elastic member and the second elastic member are springs.
Through above-mentioned technical scheme, the spring has the advantage that the lectotype is convenient, the low price.
Preferably, the pitch circle diameter of the first cylindrical gear is larger than that of the second cylindrical gear; the pitch circle diameter of the third cylindrical gear is larger than that of the fourth cylindrical gear.
Through the technical scheme, when the linear velocity of the first cylindrical gear is the same as that of the second cylindrical gear, and the angular velocity of the first cylindrical gear is smaller than that of the second cylindrical gear, the rotating speeds of the first worm wheel and the first worm are slow, and the accuracy of adjusting the angle of the first hydraulic cylinder is improved;
when the linear velocity of the third cylindrical gear is the same as the linear velocity of the fourth cylindrical gear, the angular velocity of the third cylindrical gear is smaller than that of the fourth cylindrical gear, so that the rotating speeds of the second worm wheel and the second worm are low, and the precision of adjusting the angle of the second hydraulic cylinder is improved.
Preferably, the machine body is provided with a first scale bar, and a first pointer pointing to the first scale is fixed on the first mounting plate;
the fuselage is equipped with the second scale strip, the second mounting panel is fixed with the direction the second pointer of second scale.
Through above-mentioned technical scheme, observe the pointer and correspond the numerical value of scale, the acting angle of more accurate adjustment first pneumatic cylinder and second pneumatic cylinder.
To sum up, the beneficial effect that this application has: in the process of installing the guide wall template, the end part of a piston rod of a first hydraulic cylinder is fixed with the guide template, a piston rod of a second hydraulic cylinder is fixed with the other guide template, a first driving assembly drives a first worm to rotate, the first worm drives a first worm wheel to rotate, the first worm wheel drives a first mounting plate to rotate, the first mounting plate drives the first hydraulic cylinder to rotate so as to adjust the position of the axis of the first hydraulic cylinder, and therefore the stress direction of the first hydraulic cylinder is controlled;
the second driving assembly drives the second worm to rotate, the second worm drives the second worm wheel to rotate, the second worm wheel drives the second mounting plate to rotate, the second mounting plate drives the second hydraulic cylinder to rotate to adjust the angular position of the axis of the second hydraulic cylinder, thereby controlling the stress direction of the second hydraulic cylinder, and simultaneously controlling the angle between the acting direction of the first hydraulic cylinder and the acting direction of the second hydraulic cylinder.
Drawings
FIG. 1 is a structural view of an embodiment of the present application;
FIG. 2 is a cross-sectional view taken along section A-A of an embodiment of the present application;
FIG. 3 is a cross-sectional view of a B-B interface of an embodiment of the present application.
Reference numerals: 1. a first hydraulic cylinder; 2. a first mounting plate; 3. a first worm gear; 4. a first worm; 5. A first cylindrical gear; 6. a second cylindrical gear; 7. a first fixed disk; 8. a first turntable; 9. a first handle; 10. a first ejector rod; 11. a first pointer; 12. a first scale; 13. a second hydraulic cylinder; 14. a second worm gear; 15. a second worm; 16. a third cylindrical gear; 17. a fourth cylindrical gear; 18. a second fixed disk; 19. a second turntable; 20. a second ejector rod; 21. a second handle; 22. a second scale; 23. a second pointer; 24. a first groove; 25. a first elastic member; 26. a second groove; 27. a second elastic member; 28. A body; 29. a second mounting plate.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
A hydraulic support, see fig. 1 to 3, including a body 28, the body 28 is rotatably connected with a first mounting plate 2, the first mounting plate 2 is fixedly connected with a first hydraulic cylinder 1, the first mounting plate 2 is fixedly connected with a first worm wheel 3, an axis of the first worm wheel 3 is coaxial with a rotating shaft of the first mounting plate 2, the body 28 is rotatably connected with a first worm 4 and a first driving component for driving the first worm 4 to rotate, and the first worm 4 is meshed with the first worm wheel 3;
In the process of installing the guide wall template, the end part of a piston rod of a first hydraulic cylinder 1 is fixed with the guide template, a piston rod of a second hydraulic cylinder 13 is fixed with the other guide template, a first driving component drives a first worm 4 to rotate, the first worm 4 drives a first worm wheel 3 to rotate, the first worm wheel 3 drives a first mounting plate 2 to rotate, and the first mounting plate 2 drives the first hydraulic cylinder 1 to rotate to adjust the position of the axis of the first hydraulic cylinder 1, so that the stress direction of the first hydraulic cylinder 1 is controlled;
the second driving component drives the second worm 15 to rotate, the second worm 15 drives the second worm wheel 14 to rotate, the second worm wheel 14 drives the second mounting plate 29 to rotate, the second mounting plate 29 drives the second hydraulic cylinder 13 to rotate to adjust the angular position of the axis of the second hydraulic cylinder 13, thereby controlling the stress direction of the second hydraulic cylinder 13, and simultaneously controlling the angle between the work direction of the first hydraulic cylinder 1 and the work direction of the second hydraulic cylinder 13.
Specifically, the first driving assembly comprises a first cylindrical gear 5 coaxially and fixedly connected to the first worm 4, the machine body 28 is rotatably connected with a second cylindrical gear 6, the first cylindrical gear 5 and the second cylindrical gear 6 are meshed with each other, and the machine body 28 is provided with a first driving piece for driving the second cylindrical gear 6 to rotate; the second driving assembly comprises a third cylindrical gear 16 coaxially and fixedly connected to the second worm 15, the machine body 28 is rotatably connected with a fourth cylindrical gear 17, the third cylindrical gear 16 is meshed with the fourth cylindrical gear 17, and a second driving piece for driving the fourth cylindrical gear 17 to rotate is arranged on the machine body 28.
The first driving piece drives the second cylindrical gear 6 to rotate, the second cylindrical gear 6 drives the first cylindrical gear 5 to rotate, and the first cylindrical gear 5 drives the first worm 4 to rotate; the second driving piece drives the fourth cylindrical gear 17 to rotate, the fourth cylindrical gear 17 drives the second cylindrical gear 6 to rotate, the second cylindrical gear 6 drives the second worm 15 to rotate, the rotating speeds of the first worm 4 and the second worm 15 are controlled through the cooperation between the cylindrical gears, and the accuracy of the first hydraulic cylinder 1 and the accuracy of the second hydraulic cylinder 13 are controlled and adjusted.
Specifically, the first cylindrical gear 5, the second cylindrical gear 6, the third cylindrical gear 16 and the fourth cylindrical gear 17 are helical cylindrical gears. The helical gear has the advantages of stable transmission and low noise.
Specifically, the first driving member is a first rotating disc 8 coaxially and fixedly connected to the second cylindrical gear 6, the first rotating disc 8 is provided with a first handle 9, and the first driving member further comprises a first locking component for locking the first rotating disc 8;
the second driving member is a second turntable 19 coaxially and fixedly connected to the fourth cylindrical gear 17, the second turntable 19 is provided with a second handle 21, and the second driving member further comprises a second locking assembly for locking the second turntable 19. The first rotary disk 8 is locked by the first locking assembly when the first rotary disk 8 is rotated by using the first handle 9 but the first rotary disk 8 is not required to be rotated; when the second handle 21 is used to turn the first turntable 8, but not the second turntable 19, the first turntable 8 is locked by the first locking assembly.
Specifically, the first locking assembly comprises a first fixed disc 7 connected to the body 28, the first fixed disc 7 is coaxial with the first rotary disc 8, the first rotary disc 8 is connected with a first ejector rod 10 in a sliding manner, the first ejector rod 10 abuts against a first elastic piece 25 between the first rotary disc 8, the first fixed disc 7 is uniformly provided with first grooves 24 around the axis of the first fixed disc 7, and when the first elastic piece 25 is in a natural state, one end of the first ejector rod 10 is embedded into the first grooves 24; the second locking assembly comprises a second fixed disc 18 connected to the machine body 28, the second fixed disc 18 is coaxial with the second rotary disc 19, the second rotary disc 19 is connected with a second ejector rod 20 in a sliding mode, the second ejector rod 20 is connected with a second elastic piece 27 in the second rotary disc 19 in an abutting mode, the second fixed disc 18 winds the axis of the second fixed disc 18 and is evenly provided with a second groove 26, and when the second elastic piece 27 is in a natural state, one end of the second ejector rod 20 is embedded into the second groove 26.
When the first rotary disc 8 needs to be rotated, the first push rod 10 is pulled up to pull the first elastic piece 25 to deform under stress, so that the end part of the first push rod 10 is separated from the first groove 24 on the first fixed disc 7, after the first rotary disc 8 is rotated to a proper position, the first push rod 10 is loosened, and the first push rod 10 receives the elastic force of the first elastic piece 25 to enable the end part of the first push rod 10 to be embedded into the first groove 24 to prevent the first rotary disc 8 from rotating; when the second rotary disc 19 needs to be rotated, the second push rod 20 is pulled up by the second elastic member 27 to deform under stress, so that the end of the second push rod 20 is separated from the second groove 26 on the second fixed disc 18, after the second rotary disc 19 is rotated to a proper position, the second push rod 20 is loosened, and the second push rod 20 receives the elastic force of the second elastic member 27, so that the end of the second push rod 20 is embedded into the first groove 24, and the second rotary disc 19 is prevented from rotating.
Specifically, the first elastic member 25 and the second elastic member 27 are springs. The spring has the advantages of convenient selection and low price.
Specifically, the reference circle diameter of the first cylindrical gear 5 is larger than that of the second cylindrical gear 6; the pitch circle diameter of the third cylindrical gear 16 is larger than the pitch circle diameter of the fourth cylindrical gear 17. When the linear velocity of the first cylindrical gear 5 is the same as the linear velocity of the second cylindrical gear 6, the angular velocity of the first cylindrical gear 5 is smaller than that of the second cylindrical gear 6, so that the rotating speeds of the first worm wheel 3 and the first worm 4 are slow, and the accuracy of adjusting the angle of the first hydraulic cylinder 1 is improved;
when the linear velocity of the third cylindrical gear 16 is the same as the linear velocity of the fourth cylindrical gear 17, the angular velocity of the third cylindrical gear 16 is smaller than the angular velocity of the fourth cylindrical gear 17, so that the rotational speeds of the second worm wheel 14 and the second worm 15 are slow, and the accuracy of adjusting the angle of the second hydraulic cylinder 13 is improved.
Specifically, the machine body 28 is provided with a first scale 12, and the first mounting plate 2 is fixed with a first pointer 11 pointing to the first scale 12;
the machine body 28 is provided with a second scale 22, and the second mounting plate 29 is fixed with a second pointer 23 pointing to the second scale 22. And the numerical value of the corresponding scale of the pointer is observed, and the working angle of the first hydraulic cylinder 1 and the second hydraulic cylinder 13 is more accurately adjusted.
The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims of the present application.
Claims (8)
1. The utility model provides a hydraulic support, characterized by: the device comprises a machine body (28), wherein the machine body (28) is rotatably connected with a first mounting plate (2), the first mounting plate (2) is fixedly connected with a first hydraulic cylinder (1), the first mounting plate (2) is fixedly connected with a first worm wheel (3), the axis of the first worm wheel (3) is coaxial with the rotating shaft of the first mounting plate (2), the machine body (28) is rotatably connected with a first worm (4) and a first driving assembly for driving the first worm (4) to rotate, and the first worm (4) is meshed with the first worm wheel (3);
fuselage (28) rotate and be connected with second mounting panel (29), second mounting panel (29) fixedly connected with second pneumatic cylinder (13), second mounting panel (29) fixedly connected with second worm wheel (14), second worm wheel (14) axis with second mounting panel (29) pivot is coaxial, fuselage (28) rotate and be connected with second worm (15) and drive second worm (15) pivoted second drive assembly, second worm (15) with second worm wheel (14) intermeshing.
2. A hydraulic mount according to claim 1 wherein: the first driving assembly comprises a first cylindrical gear (5) coaxially and fixedly connected to the first worm (4), the machine body (28) is rotatably connected with a second cylindrical gear (6), the first cylindrical gear (5) and the second cylindrical gear (6) are meshed with each other, and a first driving piece for driving the second cylindrical gear (6) to rotate is arranged on the machine body (28);
the second driving assembly comprises a third cylindrical gear (16) which is coaxially and fixedly connected with the second worm (15), the machine body (28) is rotatably connected with a fourth cylindrical gear (17), the third cylindrical gear (16) is meshed with the fourth cylindrical gear (17), and a second driving piece for driving the fourth cylindrical gear (17) to rotate is arranged on the machine body (28).
3. A hydraulic mount according to claim 2 wherein: the first cylindrical gear (5), the second cylindrical gear (6), the third cylindrical gear (16) and the fourth cylindrical gear (17) are helical cylindrical gears.
4. A hydraulic mount according to claim 2 wherein: the first driving piece is a first rotary disc (8) coaxially and fixedly connected to the second cylindrical gear (6), a first handle (9) is mounted on the first rotary disc (8), and the first driving piece further comprises a first locking component used for locking the first rotary disc (8);
the second driving piece is a second turntable (19) which is coaxially and fixedly connected to the fourth cylindrical gear (17), a second handle (21) is mounted on the second turntable (19), and the second driving piece further comprises a second locking assembly used for locking the second turntable (19).
5. A hydraulic mount according to claim 4 wherein: the first locking assembly comprises a first fixed disc (7) connected to the machine body (28), the first fixed disc (7) is coaxial with the first rotary disc (8), the first rotary disc (8) is connected with a first ejector rod (10) in a sliding mode, the first ejector rod (10) abuts against a first elastic piece (25) between the first rotary disc (8), the first fixed disc (7) is uniformly provided with first grooves (24) around the axis of the first fixed disc (7), and when the first elastic piece (25) is in a natural state, one end of the first ejector rod (10) is embedded into the first grooves (24);
the second locking assembly comprises a second fixed disc (18) connected to the machine body (28), the second fixed disc (18) is coaxial with the second rotary disc (19), the second rotary disc (19) is connected with a second ejector rod (20) in a sliding mode, the second ejector rod (20) is connected with a second elastic piece (27) in an abutting mode between the second rotary disc (19), the second fixed disc (18) winds the axis of the second fixed disc (18) and is evenly provided with a second groove (26), and when the second elastic piece (27) is in a natural state, one end of the second ejector rod (20) is embedded into the second groove (26).
6. A hydraulic mount according to claim 5 wherein: the first elastic member (25) and the second elastic member (27) are springs.
7. A hydraulic mount according to claim 2 wherein: the reference circle diameter of the first cylindrical gear (5) is larger than that of the second cylindrical gear (6); the pitch circle diameter of the third cylindrical gear (16) is larger than that of the fourth cylindrical gear (17).
8. A hydraulic mount according to claim 2 wherein: the machine body (28) is provided with a first scale (12) strip, and a first pointer (11) pointing to the first scale (12) is fixed on the first mounting plate (2);
the fuselage (28) is equipped with second scale (22) strip, second mounting panel (29) are fixed with and point to second pointer (23) of second scale (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023309305.0U CN214364982U (en) | 2020-12-31 | 2020-12-31 | Hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023309305.0U CN214364982U (en) | 2020-12-31 | 2020-12-31 | Hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214364982U true CN214364982U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023309305.0U Active CN214364982U (en) | 2020-12-31 | 2020-12-31 | Hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214364982U (en) |
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2020
- 2020-12-31 CN CN202023309305.0U patent/CN214364982U/en active Active
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