CN113137460A - Regulation and control type mechanical alignment meshing structure - Google Patents
Regulation and control type mechanical alignment meshing structure Download PDFInfo
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- CN113137460A CN113137460A CN202110415404.7A CN202110415404A CN113137460A CN 113137460 A CN113137460 A CN 113137460A CN 202110415404 A CN202110415404 A CN 202110415404A CN 113137460 A CN113137460 A CN 113137460A
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- ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a regulating and controlling type mechanical alignment meshing structure which comprises an alignment meshing device, wherein a stable connecting device is fixedly connected to the center position of the alignment meshing device, the alignment meshing device comprises a center piece, a driving adjusting piece and a matching piece, the center piece is arranged at the center position of the inner end of the alignment meshing device, the upper end position of the center piece is rotatably connected with the driving adjusting piece, the top end position of the driving adjusting piece is meshed with the matching piece, the center piece comprises a first meshing tooth, a threaded ring frame, a connecting guide rod, a second meshing tooth and a sleeve column frame, the first meshing tooth is arranged at one side position of the inner end of the center piece, the side end position of the first meshing tooth is rotatably connected with the connecting guide rod, and the center position of the connecting guide rod is sleeved with the threaded ring frame. The invention is a regulating mechanical alignment engaging structure, and realizes the purpose of inner end alignment engaging through the arrangement of an alignment engaging device.
Description
Technical Field
The invention relates to the technical field of mechanical equipment, in particular to a regulating and controlling type mechanical alignment meshing structure.
Background
According to chinese patent No. CN101344627, the present disclosure discloses an alignment structure of a photo actuator. The optical actuator has a main body structure, a base and an optical element. The optical element is arranged on the base. The alignment structure comprises a connecting seat and an adjusting device, wherein the connecting seat is provided with a first extending part, the first extending part and a second extending part of the main body structure are correspondingly provided with the adjusting device to be connected with the first extending part and the second extending part, and the position of the second extending part relative to the first extending part can be adjusted.
Mechanical alignment engagement structure can help carry out mechanical alignment engagement work, realize the cooperation work of the inner gear of machinery, help improving inner connection performance, solve the inconvenience that traditional machinery aimed at engagement structure, can conveniently carry out inner erection joint simultaneously, make mechanical alignment engagement structure can adapt to more internally mounted environment, time saving and labor saving's purpose has been reached, conveniently carry out subsequent maintenance work, guarantee the quality of conduction, but present mechanical alignment engagement structure has following problem:
the phenomenon that the inner mechanical inner self-regulation and control is inconvenient to carry out exists, certain inconvenience can be caused, the inner stable inner connection is inconvenient to carry out, and the phenomenon that the inner mechanical inner self-regulation and control is inconvenient to carry out and matched with machinery needs to be improved.
Disclosure of Invention
The present invention is directed to a mechanical alignment structure for adjusting and controlling alignment of a plurality of optical elements.
In order to achieve the purpose, the invention provides the following technical scheme: a regulating mechanical alignment engagement structure comprises an alignment engagement device, wherein a stable connection device is fixedly connected to the center of the alignment engagement device;
the aligning and engaging device comprises a central piece, a driving adjusting piece and a matching piece, wherein the central piece is arranged at the central position of the inner end of the aligning and engaging device, the upper end position of the central piece is rotatably connected with the driving adjusting piece, and the top end position of the driving adjusting piece is meshed and connected with the matching piece;
the central part comprises a first meshing tooth, a threaded ring frame, a connecting guide rod, a second meshing tooth and a sleeve column frame, the first meshing tooth is arranged at one side of the inner end of the central part, the side end position of the first meshing tooth is rotatably connected with the connecting guide rod, the central position of the connecting guide rod is sleeved with the threaded ring frame, the sleeve column frame is arranged at the side end position of the threaded ring frame and sleeved with the connecting guide rod, and the bottom end position of the connecting guide rod is rotatably connected with the second meshing tooth;
the driving adjusting part comprises a matching toothed ring, a matching threaded shaft, a first sleeve shaft column, a first rotating rod, a second sleeve shaft column, an anastomosis disc and a second rotating rod, the first sleeve shaft column is arranged at one side of the inner end of the driving adjusting part, the upper end position of the first sleeve shaft column is fixedly sleeved with the first rotating rod, the central position of the first rotating rod is rotatably connected with the matching threaded shaft, the side end position of the matching threaded shaft is rotatably connected with the matching toothed ring, the bottom end position of the first rotating rod is fixedly sleeved with the second sleeve shaft column, the side end position of the second sleeve shaft column is fixedly connected with the second rotating rod, and the side end position of the second rotating rod is rotatably connected with the anastomosis disc;
the fitting piece comprises an inner toothed ring, a first nested ring, an insert rod block and a second nested ring, the first nested ring is arranged at one side position of the inner end of the fitting piece, the bottom end position of the first nested ring is sleeved with the insert rod block, the upper end position of the insert rod block is inserted into the inner toothed ring, and the bottom end position of the insert rod block is sleeved with the second nested ring;
the stabilizing connecting device comprises a first stabilizing ring, a stabilizing shaft sleeve and a second stabilizing ring, the first stabilizing ring is arranged on one side of the inner end of the stabilizing connecting device, the side end of the first stabilizing ring is fixedly connected with the stabilizing shaft sleeve, and the side end of the stabilizing shaft sleeve is fixedly connected with the second stabilizing ring;
the utility model discloses a firm axle sleeve, including the firm axle sleeve, the firm axle sleeve includes the joint piece, runs through pole, elastic rod, elastic connecting ring and end axle ring, the center one side position at firm axle sleeve is established to end axle ring, the lower extreme position of end axle ring is articulated mutually with the elastic connecting ring and is set up, the both sides position and the elastic rod looks elastic connection of elastic connecting ring, the bottom position department and the joint piece looks fixed connection of elastic connecting ring, run through the inner central point department that the pole runs through firm axle sleeve.
Preferably, the through rod is connected with the first stabilizing ring and the second stabilizing ring.
Preferably, the fixing shaft sleeve is fixedly clamped with the first nesting ring and the second nesting ring through clamping tabs.
Preferably, the inner gear ring and the matching gear ring are arranged in a rotating meshed mode.
Preferably, the matching threaded shaft is in threaded connection with the threaded ring frame.
Preferably, the driving adjusting part is rotatably engaged with the outside through an anastomosis plate.
Preferably, the number of the stable shaft sleeves is four, and the central positions of the stable shaft sleeves are fixed with the first nesting ring and the second nesting ring.
Preferably, the first sleeve shaft column and the second sleeve shaft column are symmetrically sleeved at the center of the sleeve column frame and can be rotatably connected through the connecting guide rod.
Compared with the prior art, the invention has the beneficial effects that:
one, through the installation alignment engagement device, the inner of aiming at engagement device is by the centre piece, drive regulating part and fitting piece are constituteed, the inner drives the connection through drive regulating part, realize the regulation of centre piece position, can be connected with the external world through the centre piece, realize the driving function of power, the help carries out the transmission of power, both ends position through the centre piece meshes with the external world and is connected, realize the conduction connection function, and the setting of fitting piece, conveniently carry out the adaptation connection conduction of centre piece and drive regulating part, be convenient for carry out the inside regulation and control of inner mechanization.
Two, through the installation firm connecting device, conveniently carry out the inner firm internal connection, conveniently carry on with mechanical cooperation, through firm connecting device's setting, realize the inner firm connection, can fix mutually with the external world through firm connecting device's upper and lower extreme position, realize mutual fixed, through firm connecting device's setting, can cooperate with aiming at engaging device simultaneously, realize mutual firm connection.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a schematic view of the alignment mark-up device of the present invention;
FIG. 3 is a schematic view of the construction of the hub of the present invention;
FIG. 4 is a schematic view of the driving adjustment member of the present invention;
FIG. 5 is a schematic view of the structure of the mating member of the present invention;
FIG. 6 is a schematic view of the structure of the fastening device of the present invention;
FIG. 7 is a schematic view of the detachable connection device of the present invention;
fig. 8 is a schematic structural view of the stabilizing sleeve of the present invention.
In the figure: 1-aligning the engagement means; 2-a stable connection device; 3-a central piece; 4-driving the adjusting member; 5-a mating member; 6-first meshing teeth; 7-a threaded ring frame; 8-connecting the guide rod; 9-a second meshing tooth; 10-set of column frame; 11-mating toothed ring; 12-a mating threaded shaft; 13-a first set of studs; 14-a first turning lever; 15-a second boss post; 16-an anastomosis plate; 17-a second swivelling lever; 18-an internal gear ring; 19-a first nested ring; 20-a plunger block; 21-a second nested ring; 22-a first stabilizing ring; 23-stabilizing the shaft sleeve; 24-a second stabilizing ring; 25-a snap tab; 26-a through rod; 27-a resilient lever; 28-elastic connecting rings; 29-bottom collar.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a technical solution: a regulating type mechanical alignment meshing structure comprises an alignment meshing device 1, a stable connecting device 2 is fixedly connected to the center position of the alignment meshing device 1, the alignment meshing device 1 is installed, the inner end of the alignment meshing device 1 is composed of a center piece 3, a driving adjusting piece 4 and a matching piece 5, the inner end is in driving connection through the driving adjusting piece 4, the position of the center piece 3 is adjusted, the center piece 3 can be connected with the outside, the driving function of power is achieved, power transmission is facilitated, the two end positions of the center piece 3 are in meshing connection with the outside, the conduction connecting function is achieved, the matching piece 5 is arranged, adaptive connection conduction of the center piece 3 and the driving adjusting piece 4 is facilitated, and mechanical internal self-regulation and control of the inner end are facilitated;
the aligning and engaging device 1 comprises a central piece 3, a driving adjusting piece 4 and a matching piece 5, wherein the central piece 3 is arranged at the central position of the inner end of the aligning and engaging device 1, the upper end position of the central piece 3 is rotatably connected with the driving adjusting piece 4, and the top end position of the driving adjusting piece 4 is connected with the matching piece 5 in a matching way;
the central part 3 comprises a first meshing tooth 6, a threaded ring frame 7, a connecting guide rod 8, a second meshing tooth 9 and a sleeve column frame 10, the first meshing tooth 6 is arranged at one side of the inner end of the central part 3, the side end of the first meshing tooth 6 is rotatably connected with the connecting guide rod 8, the central position of the connecting guide rod 8 is sleeved with the threaded ring frame 7, the sleeve column frame 10 is arranged at the side end of the threaded ring frame 7, the sleeve column frame 10 is sleeved with the connecting guide rod 8, and the bottom end of the connecting guide rod 8 is rotatably connected with the second meshing tooth 9;
the driving adjusting part 4 comprises a matching toothed ring 11, a matching threaded shaft 12, a first sleeve shaft column 13, a first rotating rod 14, a second sleeve shaft column 15, an anastomosis disc 16 and a second rotating rod 17, wherein the first sleeve shaft column 13 is arranged at one side position of the inner end of the driving adjusting part 4, the upper end position of the first sleeve shaft column 13 is fixedly sleeved with the first rotating rod 14, the central position of the first rotating rod 14 is rotatably connected with the matching threaded shaft 12, the side end position of the matching threaded shaft 12 is rotatably connected with the matching toothed ring 11, the bottom end position of the first rotating rod 14 is fixedly sleeved with the second sleeve shaft column 15, the side end position of the second sleeve shaft column 15 is fixedly connected with the second rotating rod 17, and the side end position of the second rotating rod 17 is rotatably connected with the anastomosis disc 16;
the fitting piece 5 comprises an inner toothed ring 18, a first nesting ring 19, an inserted bar block 20 and a second nesting ring 21, the first nesting ring 19 is arranged at one side of the inner end of the fitting piece 5, the bottom end of the first nesting ring 19 is sleeved with the inserted bar block 20, the upper end of the inserted bar block 20 is inserted into the inner toothed ring 18, and the bottom end of the inserted bar block 20 is sleeved with the second nesting ring 21;
the stable connecting device 2 comprises a first stable ring 22, a stable shaft sleeve 23 and a second stable ring 24, the first stable ring 22 is arranged on one side of the inner end of the stable connecting device 2, the side end of the first stable ring 22 is fixedly connected with the stable shaft sleeve 23, and the side end of the stable shaft sleeve 23 is fixedly connected with the second stable ring 24;
the stabilizing shaft sleeve 23 comprises a clamping sheet 25, a through rod 26, an elastic rod 27, an elastic connecting ring 28 and a bottom shaft ring 29, wherein the bottom shaft ring 29 is arranged at one side of the center of the stabilizing shaft sleeve 23, the lower end of the bottom shaft ring 29 is hinged with the elastic connecting ring 28, two sides of the elastic connecting ring 28 are elastically connected with the elastic rod 27, the bottom end of the elastic connecting ring 28 is fixedly connected with the clamping sheet 25, and the through rod 26 penetrates through the center of the inner end of the stabilizing shaft sleeve 23.
The through rod 26 is connected with the first stabilizing ring 22 and the second stabilizing ring 24, the stabilizing shaft sleeve 23 is fixedly clamped with the first nested ring 19 and the second nested ring 21 through a clamping sheet 25, the inner toothed ring 18 is rotatably meshed with the matching toothed ring 11, the matching threaded shaft 12 is in threaded connection with the threaded ring frame 7, the driving adjusting part 4 is rotatably meshed with the outside through an anastomosis disc 16, four stabilizing shaft sleeves 23 are arranged, the central positions of the four stabilizing shaft sleeves are fixed with the first nested ring 19 and the second nested ring 21, the first sleeve shaft column 13 and the second sleeve shaft column 15 are symmetrically sleeved at the central position of the sleeve column frame 10 and can be rotatably connected through a connecting guide rod 8, the inner end stabilizing inner connection is conveniently carried out through installing the stabilizing connecting device 2, the mechanical matching is conveniently carried out, the inner end stabilizing connection is realized through the setting of the stabilizing connecting device 2, the upper end position and the lower end position of the stabilizing connecting device 2 can be fixed with the outside, mutual fixation is realized, and meanwhile, through the arrangement of the stable connection device 2, the device can be matched with the alignment and engagement device 1 to realize mutual stable connection.
The working principle is as follows: when the device needs to work, a user combines the alignment meshing device 1 and the stable connecting device 2, firstly, the device is preset, the device is driven by the outside to drive the inosculating disc 16 at the inner end of the driving adjusting part 4 to rotate, so that the second rotating rod 17 rotates to act on the second sleeve shaft column 15, the second sleeve shaft column 15 is sleeved with the central position of the connecting guide rod 8, the first sleeve shaft column 13 is sleeved with the other end position, the second sleeve shaft column 15 is driven by the second rotating rod 17 to rotate around the connecting guide rod 8 to act on the first rotating rod 14, so that the matching toothed ring 11 and the matching threaded shaft 12 at the upper end position rotate, the matching toothed ring 11 can rotate around the inner end of the inner toothed ring 18 through rotation, so as to drive the matching threaded shaft 12 to rotate, and can act on the threaded ring frame 7 through rotation of the matching threaded shaft 12, the threaded ring frame 7 is rotated, so that the connecting guide rod 8 can perform position conversion work, a rod body is arranged between the first meshing tooth 6 and the second meshing tooth 9, the rod body between the first meshing tooth 6 and the second meshing tooth 9 penetrates through the central position of the connecting guide rod 8, so that the connecting guide rod 8 can drive the first meshing tooth 6 and the second meshing tooth 9 to perform position change, the first meshing tooth 6 and the second meshing tooth 9 realize position change through the pushing action of the connecting guide rod 8, the first meshing tooth 6 and the second meshing tooth 9 realize meshing and matching work with the outside through position change, the transmission of power is realized, the first nested ring 19 and the second nested ring 21 at the inner end of the fitting piece 5 can perform central position fixing through the stabilizing shaft sleeve 23, the first stabilizing ring 22 and the second stabilizing ring 24 are used for connecting with the outside, and stable setting with the outside is realized, the clamping sheets 25 can be connected with the first nesting ring 19 and the second nesting ring 21, the clamping sheets 25 can be elastically connected through elastic rods 27, the elastic connecting ring 28 at the bottom end position can perform limited rotation through a bottom ring collar 29, and the stable connection of the center of the inner end is realized, so that the work is completed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A modulated mechanical alignment engagement structure comprising an alignment engagement device (1), characterized in that: a stable connecting device (2) is fixedly connected to the center of the aligning and engaging device (1);
the aligning and engaging device (1) comprises a central part (3), a driving adjusting part (4) and a matching part (5), wherein the central part (3) is arranged at the central position of the inner end of the aligning and engaging device (1), the upper end position of the central part (3) is rotatably connected with the driving adjusting part (4), and the top end position of the driving adjusting part (4) is meshed and connected with the matching part (5);
the central part (3) comprises first meshing teeth (6), a threaded ring frame (7), a connecting guide rod (8), second meshing teeth (9) and a sleeve column frame (10), the first meshing teeth (6) are arranged at one side of the inner end of the central part (3), the side end of the first meshing teeth (6) is rotatably connected with the connecting guide rod (8), the central position of the connecting guide rod (8) is sleeved with the threaded ring frame (7), the sleeve column frame (10) is arranged at the side end of the threaded ring frame (7), the sleeve column frame (10) is sleeved with the connecting guide rod (8), and the bottom end of the connecting guide rod (8) is rotatably connected with the second meshing teeth (9);
the driving adjusting part (4) comprises a matching gear ring (11), a matching threaded shaft (12), a first sleeve shaft column (13), a first rotating rod (14), a second sleeve shaft column (15), an anastomosis disc (16) and a second rotating rod (17), the first sleeve shaft column (13) is arranged at one side of the inner end of the driving adjusting piece (4), the upper end of the first sleeve shaft column (13) is fixedly sleeved with the first rotating rod (14), the center of the first rotating rod (14) is rotationally connected with the matching threaded shaft (12), the side end of the matching threaded shaft (12) is rotationally connected with the matching toothed ring (11), the bottom end of the first rotating rod (14) is fixedly sleeved with a second sleeve shaft column (15), the side end position of the second sleeve shaft column (15) is fixedly connected with a second rotating rod (17), the side end position of the second rotating rod (17) is rotationally connected with the inosculating disc (16);
the fitting piece (5) comprises an inner toothed ring (18), a first nesting ring (19), a plug rod block (20) and a second nesting ring (21), the first nesting ring (19) is arranged at one side of the inner end of the fitting piece (5), the bottom end of the first nesting ring (19) is sleeved with the plug rod block (20), the upper end of the plug rod block (20) is inserted into the inner toothed ring (18), and the bottom end of the plug rod block (20) is sleeved with the second nesting ring (21);
the fixing and connecting device (2) comprises a first fixing ring (22), a fixing shaft sleeve (23) and a second fixing ring (24), the first fixing ring (22) is arranged on one side of the inner end of the fixing and connecting device (2), the side end of the first fixing ring (22) is fixedly connected with the fixing shaft sleeve (23), and the side end of the fixing shaft sleeve (23) is fixedly connected with the second fixing ring (24);
firm axle sleeve (23) are including joint strip (25), link up pole (26), elastic rod (27), elasticity connecting ring (28) and end collar (29), center one side position at firm axle sleeve (23) is established in end collar (29), the lower extreme position and the articulated setting of elasticity connecting ring (28) mutually of end collar (29), the both sides position and the elastic rod (27) of elasticity connecting ring (28) are connected mutually elastically, the bottom end position department and the joint strip (25) looks fixed connection of elasticity connecting ring (28), the inner central point department that links up pole (26) through firm axle sleeve (23).
2. A modulated mechanical alignment engagement structure, according to claim 1, wherein: the through-rod (26) is connected to the first stabilizing ring (22) and the second stabilizing ring (24).
3. A modulated mechanical alignment engagement structure, according to claim 1, wherein: the stabilizing shaft sleeve (23) is fixedly clamped with the first nesting ring (19) and the second nesting ring (21) through clamping sheets (25).
4. A modulated mechanical alignment engagement structure, according to claim 1, wherein: the inner gear ring (18) is rotationally meshed with the matching gear ring (11).
5. A modulated mechanical alignment engagement structure, according to claim 1, wherein: the matching threaded shaft (12) is in threaded connection with the threaded ring frame (7).
6. A modulated mechanical alignment engagement structure, according to claim 1, wherein: the driving adjusting part (4) is meshed with the outside through an anastomosis disc (16) and is arranged in a rotating mode.
7. A modulated mechanical alignment engagement structure, according to claim 1, wherein: the number of the stable shaft sleeves (23) is four, and the center positions of the stable shaft sleeves are fixed with the first nesting ring (19) and the second nesting ring (21).
8. A modulated mechanical alignment engagement structure, according to claim 1, wherein: the first sleeve shaft column (13) and the second sleeve shaft column (15) are symmetrically sleeved at the center of the sleeve column frame (10) and can be rotatably connected through the connecting guide rod (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110415404.7A CN113137460A (en) | 2021-04-18 | 2021-04-18 | Regulation and control type mechanical alignment meshing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110415404.7A CN113137460A (en) | 2021-04-18 | 2021-04-18 | Regulation and control type mechanical alignment meshing structure |
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| Publication Number | Publication Date |
|---|---|
| CN113137460A true CN113137460A (en) | 2021-07-20 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110415404.7A Pending CN113137460A (en) | 2021-04-18 | 2021-04-18 | Regulation and control type mechanical alignment meshing structure |
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| Country | Link |
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| CN (1) | CN113137460A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113750425A (en) * | 2021-10-09 | 2021-12-07 | 湖南豪源科技有限公司 | Fire hose winding equipment for fire-fighting technology |
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| US5249474A (en) * | 1992-03-02 | 1993-10-05 | Arens Controls, Inc. | Power takeoff and electromechanical shifter therefor |
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| JP2004229337A (en) * | 2003-01-20 | 2004-08-12 | Nsk Ltd | Linear actuator |
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| CN111300535A (en) * | 2018-12-11 | 2020-06-19 | 宁波甬龙机械有限公司 | Bilateral perforating device of inner frame of automobile hydraulic shock absorber |
| CN111817495A (en) * | 2020-08-17 | 2020-10-23 | 杨皮努 | Multi-axis symmetric transmission output adjusting structure |
| CN112178133A (en) * | 2020-09-29 | 2021-01-05 | 周施豪 | High-freedom transmission structure for mechanical power transmission |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE390685A (en) * | 1931-10-30 | 1932-09-30 | Maison Breguet | Intermediate wheel two-crew gear transmission |
| US4453433A (en) * | 1981-04-27 | 1984-06-12 | Burke Clement | Gear wrench having adjustment to assure proper meshing |
| US5249474A (en) * | 1992-03-02 | 1993-10-05 | Arens Controls, Inc. | Power takeoff and electromechanical shifter therefor |
| WO2004020870A1 (en) * | 2002-08-27 | 2004-03-11 | Ats Automation Tooling Systems Inc. | Linear actuator and method of minimizing axial movement of the spindle |
| JP2004229337A (en) * | 2003-01-20 | 2004-08-12 | Nsk Ltd | Linear actuator |
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| CN113750425A (en) * | 2021-10-09 | 2021-12-07 | 湖南豪源科技有限公司 | Fire hose winding equipment for fire-fighting technology |
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Application publication date: 20210720 |