CN115180479B - Mechanical locking device of elevator without machine room - Google Patents
Mechanical locking device of elevator without machine room Download PDFInfo
- Publication number
- CN115180479B CN115180479B CN202211023673.XA CN202211023673A CN115180479B CN 115180479 B CN115180479 B CN 115180479B CN 202211023673 A CN202211023673 A CN 202211023673A CN 115180479 B CN115180479 B CN 115180479B
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- bevel gear
- elevator
- rod
- shell
- sliding
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- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention relates to the technical field of machine-room-less elevators, and discloses a machine-room-less elevator mechanical locking device, which comprises a shell, wherein a groove is formed in one side of the shell, a locking mechanism is arranged in the shell, an auxiliary mechanism is arranged on one side of the locking mechanism, the locking mechanism comprises an adjusting rod, a first bevel gear is fixedly arranged on the outer side of the adjusting rod, a second bevel gear is connected with one side of the first bevel gear in a meshed manner, and a connecting column is fixedly arranged in the middle of the second bevel gear. When the elevator guide rail is used, the elevator guide rail is arranged in the groove on the shell, the rollers can roll on two sides of the elevator guide rail, then the adjusting rod is rotated, the threaded column can be driven to rotate through the matched arrangement among the adjusting rod, the first bevel gear, the second bevel gear and the connecting column, and meanwhile, the two clamping blocks can be driven to approach the elevator guide rail through the matched arrangement between the threaded sleeve and the mounting rod, so that the mechanical locking of the elevator car is completed.
Description
Technical Field
The invention relates to the technical field of machine-room-less elevators, in particular to a machine-room-less elevator mechanical locking device.
Background
The elevator without machine room is an elevator which does not need a building to provide a closed special machine room for installing equipment such as an elevator driving host, a control cabinet, a speed limiter and the like. The machine-room-less elevator is not a simple local improvement of the traditional elevators in the past, but a major revolution of the elevator technology. The key technology adopted by the elevator car locking device is popularized and applied to other elevator products, so that the technical progress of the whole elevator industry is driven, and when the elevator without the machine room is maintained or checked from the car top, the car needs to be locked by using the mechanical locking device in order to avoid the car from falling out of control.
Some elevator mechanical locking devices without machine room in the market at present:
in the use process of the mechanical locking device, the guide rail is clamped by the clamping blocks in a manual mode generally so as to achieve the effect of locking the displacement of the elevator car, but the traditional mechanical locking device for the elevator without a machine room can only finish one clamping operation when locking the elevator, the long-time use of the clamping blocks possibly causes the smoothness of one side contacted with the guide rail, the sliding risk occurs in the locking process, and when sliding occurs between the clamping blocks and the guide rail, workers cannot timely touch the mechanical locking device, so that the clamping degree of the clamping blocks cannot be further adjusted timely, and the life safety of the workers is threatened easily.
We have therefore proposed a mechanical locking device for a machineroom-less elevator in order to solve the problems presented in the foregoing.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art in the background technology, the invention aims to provide a mechanical locking device of a machine-room-less elevator, so as to solve the problem that the mechanical locking device of the machine-room-less elevator provided in the background technology is inconvenient to continuously tighten.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the utility model provides a no computer lab elevator mechanical locking device, includes the shell, the recess has been seted up to one side of shell, the inside of shell is provided with locking mechanical system, one side of locking mechanical system is provided with auxiliary mechanism, locking mechanical system includes the regulation pole, the outside fixed mounting of regulation pole has first bevel gear, one side meshing of first bevel gear is connected with the second bevel gear, the middle part fixed mounting of second bevel gear has the spliced pole, the one end fixed mounting of spliced pole has the screw thread post, the outside threaded connection of screw thread post has the screw thread cover, one side fixed mounting of screw thread cover has the installation pole, the one end fixed mounting of installation pole has the clamp splice;
the auxiliary mechanism comprises a rotating rod, a third bevel gear is fixedly arranged on the outer side of one end of the rotating rod, a fourth bevel gear is connected to one side of the third bevel gear in a meshed mode, a rotating shaft is inserted into the other end of the rotating rod, and a roller is fixedly arranged on the outer side of the rotating shaft.
Preferably, one side fixed mounting that the top of shell is close to the recess has canceling release mechanical system, canceling release mechanical system includes the diaphragm, the diaphragm is fixed mutually with the top of shell, the inside sliding connection of diaphragm has the slide bar, the shape of slide bar is the U-shaped, the equal fixed mounting in both ends of slide bar has the slide, the both ends outside of slide bar all is provided with reset spring, reset spring's one end is fixed mutually with one side of diaphragm, reset spring's the other end is fixed mutually with one side middle part of slide, one side bottom of slide and one end rotation connection of rotation axis.
Preferably, the top of the shell is provided with sliding grooves on two sides close to the grooves, and the sliding grooves are matched with the sliding plates.
Preferably, the inner bottom wall of the housing is fixedly provided with two vertical plates, and the rotating rod penetrates the vertical plates and extends to the outside.
Further, the one end outside fixed mounting of rotary rod has the sand grip, the quantity of sand grip has a plurality of, and is a plurality of the sand grip is annular array and distributes, the spacing groove has been seted up to the one end of rotation axis, sand grip and spacing groove looks adaptation.
Further, the groove matched with the mounting rod is formed in the two sides of the bottom of the shell, the clamping blocks are close to the bottom of the roller, the through grooves communicated with the shell are formed in the two sides of the inner wall of the groove, and the roller is located in the through grooves.
Further, one end of the adjusting rod penetrates through the shell and extends to the outside, one end of the threaded column is rotationally connected with one side of the inner wall of the shell, and the middle part of the fourth bevel gear is fixed with the outer side of one end of the connecting column.
(III) beneficial effects
Compared with the prior art, the invention has the beneficial effects that:
(1) When the elevator guide rail is used, the rollers can roll on two sides of the elevator guide rail, then the adjusting rod is rotated, the threaded column can be driven to rotate through the matched arrangement among the adjusting rod, the first bevel gear, the second bevel gear and the connecting column, and meanwhile, the two clamping blocks can be driven to approach the elevator guide rail through the matched arrangement between the threaded sleeve and the mounting rod, so that the mechanical locking of the elevator car is finished.
(2) The invention can drive the roller to move forwards through the cooperation between the sliding plate and the rotating shaft by pushing the sliding rod forwards, so that the rotating shaft is separated from the rotating rod, the reset spring is stretched, further, the roller can be prevented from idling on the elevator guide rail when the clamping block is adjusted, unnecessary abrasion to the roller is prevented, the sliding rod is loosened after the clamping block is clamped on the elevator guide rail, the reset spring is reset, and at the moment, the reset spring drives the rotating shaft to be inserted outside the rotating rod again through the sliding plate.
(3) According to the invention, the sliding groove is formed, so that the stability of the sliding plate during sliding can be improved, and the moving precision of the roller is improved.
(4) The invention can provide support for the rotating rod by arranging the vertical plate, thereby improving the stability of the rotating rod.
Drawings
Fig. 1 is a schematic view of the whole perspective rear view structure of the mechanical locking device of the elevator without machine room of the present invention;
fig. 2 is a schematic diagram of the overall perspective top view of the mechanical locking device of the elevator without machine room of the present invention;
fig. 3 is a schematic perspective sectional structure of a housing of the machinery locking device of the elevator without machine room of the present invention;
fig. 4 is a schematic perspective view of the mounting bar of the machine room less elevator mechanical locking apparatus of the present invention;
fig. 5 is a schematic perspective view of a rotating lever of the mechanical locking device of the elevator without machine room of the present invention;
fig. 6 is a schematic perspective view of a roller of the mechanical locking device of the elevator without machine room of the present invention;
fig. 7 is a schematic diagram showing the overall front view of the mechanical locking device of the elevator without machine room of the present invention.
In the figure: 1. a housing; 2. a reset mechanism; 201. a cross plate; 202. a slide bar; 203. a slide plate; 204. a return spring; 3. a groove; 4. a locking mechanism; 401. an adjusting rod; 402. a first bevel gear; 403. a second bevel gear; 404. a connecting column; 405. a threaded column; 406. a thread sleeve; 407. a mounting rod; 408. clamping blocks; 5. an auxiliary mechanism; 501. a rotating rod; 502. a third bevel gear; 503. a fourth bevel gear; 504. a rotation shaft; 505. a roller; 506. a convex strip; 507. a limit groove; 6. a vertical plate; 7. and a sliding groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, the present invention provides a mechanical locking device for a machine-roomless elevator; the device comprises a shell 1, wherein a groove 3 is formed in one side of the shell 1, a locking mechanism 4 is arranged in the shell 1, an auxiliary mechanism 5 is arranged on one side of the locking mechanism 4, the locking mechanism 4 comprises an adjusting rod 401, a first bevel gear 402 is fixedly arranged in the middle of the outer side of the adjusting rod 401, a second bevel gear 403 is connected with one side of the first bevel gear 402 in a meshed mode, a connecting column 404 is fixedly arranged in the middle of the second bevel gear 403, a threaded column 405 is fixedly arranged at one end of the connecting column 404, a threaded sleeve 406 is connected with the outer side of the threaded column 405 in a threaded mode, a mounting rod 407 is fixedly arranged at one side of the threaded sleeve 406, the mounting rod 407 is in a special shape, the bottom end of the mounting rod 407 penetrates through the bottom of the shell 1 and extends to the outer side, and a clamping block 408 is fixedly arranged at one end of the mounting rod 407;
the auxiliary mechanism 5 comprises a rotary rod 501, a third bevel gear 502 is fixedly arranged on the outer side of one end of the rotary rod 501, a fourth bevel gear 503 is connected to one side of the third bevel gear 502 in a meshed mode, a rotary shaft 504 is inserted into the other end of the rotary rod 501, and a roller 505 is fixedly arranged on the outer side of the rotary shaft 504;
according to the preferred embodiment of the present invention, as shown in fig. 1 to 3: the top of the shell 1 is fixedly provided with a reset mechanism 2 near one side of the groove 3, the reset mechanism 2 comprises a transverse plate 201, the transverse plate 201 is fixed with the top of the shell 1, a sliding rod 202 is connected inside the transverse plate 201 in a sliding manner, the sliding rod 202 is U-shaped, two ends of the sliding rod 202 are fixedly provided with sliding plates 203, the outer sides of the two ends of the sliding rod 202 are respectively provided with a reset spring 204, one end of each reset spring 204 is fixed with one side of the transverse plate 201, the other end of each reset spring 204 is fixed with the middle part of one side of each sliding plate 203, and one side bottom of each sliding plate 203 is rotationally connected with one end of a rotating shaft 504;
according to fig. 2, as a preferred embodiment of the present invention: the two sides of the top of the shell 1, which are close to the groove 3, are provided with sliding grooves 7, and the sliding grooves 7 are matched with the sliding plates 203;
according to fig. 3, as a preferred embodiment of the present invention: the two vertical plates 6 are fixedly arranged on the inner bottom wall of the shell 1, one end of the adjusting rod 401 is rotatably connected with the middle part of one side of the vertical plate 6 close to the first bevel gear 402, so that the stability of the adjusting rod 401 in rotation is improved, and the rotating rod 501 penetrates through the vertical plate 6 and extends to the outside;
according to fig. 5-6, as a preferred embodiment of the present invention: the convex strips 506 are fixedly arranged on the outer side of one end of the rotary rod 501, a plurality of convex strips 506 are distributed in an annular array, the limit grooves 507 are formed in one end of the rotary rod 504, the convex strips 506 are matched with the limit grooves 507, the rotary rod 504 can be rotated through the matched arrangement between the convex strips 506 and the limit grooves 507, the rotary rod 504 is prevented from rotating on the outer side of the rotary rod 501, and the stability of the device in operation is improved;
according to fig. 3, as a preferred embodiment of the present invention: grooves matched with the mounting rods 407 are formed in two sides of the bottom of the shell 1, the mounting rods 407 can be limited, the clamping blocks 408 are arranged close to the bottom of the roller 505, one side of each clamping block 408 and the outer side of each roller 505 are coated with wear-resistant paint, the wear resistance of each clamping block 408 and each roller 505 can be improved through the wear-resistant paint, through grooves communicated with the shell 1 are formed in two sides of the inner wall of the groove 3, the roller 505 is located in the through grooves, and one side of each roller 505 penetrates through the corresponding through groove and extends to the inside of the groove 3;
according to fig. 3, as a preferred embodiment of the present invention: one end of the adjusting rod 401 penetrates through the shell 1 and extends to the outside, one end of the threaded column 405 is rotatably connected with one side of the inner wall of the shell 1, the middle part of the fourth bevel gear 503 is fixed with the outer side of one end of the connecting column 404, the fourth bevel gear 503 is fixed through the connecting column 404, and the clamping degree of the clamping block 408 can be adjusted through rotation of the roller 505.
The working principle of the embodiment is as follows: when the mechanical locking device of the elevator without machine room is used, as shown in fig. 1-7, firstly, the shell 1 is pushed to the elevator guide rail and the elevator guide rail is positioned in the groove 3, at the moment, the roller 505 can roll at two sides of the elevator guide rail, then the slide bar 202 is pushed forward, at the moment, the slide bar 202 drives the roller 505 to move forward through the rotating shaft 504 on the slide plate 203, thereby separating the rotating shaft 504 from the rotating rod 501, at the moment, the reset spring 204 is stretched, then the adjusting rod 401 is rotated, at the moment, the adjusting rod 401 drives the connecting column 404 to rotate through the second bevel gear 403 meshed with the first bevel gear 402, at the same time, the connecting column 404 drives the clamping blocks 408 on the mounting rod 407 to approach the elevator guide rail through the threaded sleeve 406 on the threaded column 405, thereby clamping the two clamping blocks 408 are clamped at two sides of the elevator guide rail, thus locking the elevator car is completed, after locking, the slide bar 202 is released, at this time, the return spring 204 is reset, the return spring 204 drives the rotating shaft 504 to approach the rotating shaft 501 through the sliding plate 203, and one end of the rotating shaft 501 is inserted into the limit groove 507 of the rotating shaft 504, at this time, the rotating shaft 504 can be prevented from rotating outside the rotating shaft 501 through the raised strips 506 on the rotating shaft 501, in the use process, when the clamping block 408 has a downward sliding trend on the elevator guide rail, the roller 505 follows rotation, and simultaneously, the roller 505 drives the fourth bevel gear 503 meshed with the third bevel gear 502 to rotate through the rotating shaft 501 on the rotating shaft 504, at this time, the fourth bevel gear 503 can drive the threaded post 405 to rotate again through the connecting post 404, so that the mounting rod 407 can drive the clamping block 408 to approach the elevator guide rail again, so that the clamping block 408 automatically and continuously tightens the guide rail, thereby the whole device works process, and all that is not described in detail in this specification is within the skill of the art.
Although the invention has been described in detail with reference to the foregoing embodiments, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are intended to be broadly interpreted as either a fixed connection or a removable connection, for example; or may be indirectly connected through an intervening medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances; it should be understood that those skilled in the art may still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features, and any modification, equivalent substitution, improvement, etc. that are within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a no computer lab elevator mechanical locking device, includes shell (1), its characterized in that, recess (3) is seted up to one side of shell (1), the inside of shell (1) is provided with locking mechanical system (4), one side of locking mechanical system (4) is provided with auxiliary mechanism (5), locking mechanical system (4) include regulation pole (401), the outside fixed mounting of regulation pole (401) has first bevel gear (402), one side meshing of first bevel gear (402) is connected with second bevel gear (403), the middle part fixed mounting of second bevel gear (403) has spliced pole (404), one end fixed mounting of spliced pole (404) has screw post (405), outside threaded connection of screw post (405) has thread bush (406), one side fixed mounting of thread bush (406) has installation pole (407), one end fixed mounting of installation pole (407) has clamp splice (408);
the auxiliary mechanism (5) comprises a rotating rod (501), a third bevel gear (502) is fixedly arranged at the outer side of one end of the rotating rod (501), a fourth bevel gear (503) is connected to one side of the third bevel gear (502) in a meshed mode, a rotating shaft (504) is inserted into the other end of the rotating rod (501), and a roller (505) is fixedly arranged at the outer side of the rotating shaft (504);
one end of the adjusting rod (401) penetrates through the shell (1) and extends to the outside, one end of the threaded column (405) is rotationally connected with one side of the inner wall of the shell (1), and the middle part of the fourth bevel gear (503) is fixed with the outer side of one end of the connecting column (404);
the shell (1) is pushed to the upper elevator guide rail and the elevator guide rail is located in the groove (3), at the moment, the roller (505) can roll on two sides of the elevator guide rail, then the sliding rod (202) is pushed forward, at the moment, the sliding rod (202) drives the roller (505) to move forward through the rotating shaft (504) on the sliding plate (203), so that the rotating shaft (504) is separated from the rotating rod (501), the reset spring (204) is stretched, then the adjusting rod (401) is rotated, at the moment, the adjusting rod (401) drives the connecting column (404) to rotate through the second bevel gear (403) meshed with the first bevel gear (402), and meanwhile, the connecting column (404) drives the clamping blocks (408) on the mounting rod (407) to approach the elevator guide rail through the threaded sleeves (406), and accordingly the two clamping blocks (408) are clamped on two sides of the elevator guide rail, and locking of an elevator car is completed.
2. The mechanical locking device of the elevator without machine room according to claim 1, wherein a reset mechanism (2) is fixedly installed on one side, close to the groove (3), of the top of the casing (1), the reset mechanism (2) comprises a transverse plate (201), the transverse plate (201) is fixed with the top of the casing (1), a sliding rod (202) is slidably connected inside the transverse plate (201), the sliding rod (202) is U-shaped, sliding plates (203) are fixedly installed at two ends of the sliding rod (202), reset springs (204) are arranged on the outer sides of two ends of the sliding rod (202), one end of each reset spring (204) is fixed with one side of the transverse plate (201), the other end of each reset spring (204) is fixed with the middle of one side of the sliding plate (203), and one side bottom of the sliding plate (203) is rotatably connected with one end of the rotating shaft (504).
3. The mechanical locking device of the elevator without machine room according to claim 1, wherein sliding grooves (7) are formed in two sides, close to the grooves (3), of the top of the housing (1), and the sliding grooves (7) are matched with the sliding plates (203).
4. A machine-roomless elevator mechanical locking device as claimed in claim 1, characterized in that the inner bottom wall of the housing (1) is fixedly mounted with two risers (6), the rotating lever (501) extending through the risers (6) to the outside.
5. The mechanical locking device of the elevator without machine room according to claim 1, wherein a convex strip (506) is fixedly installed at the outer side of one end of the rotating rod (501), a plurality of convex strips (506) are arranged, the convex strips (506) are distributed in an annular array, a limit groove (507) is formed at one end of the rotating shaft (504), and the convex strips (506) are matched with the limit groove (507).
6. The mechanical locking device of the elevator without machine room of claim 1, wherein grooves matched with the mounting rods (407) are formed in two sides of the bottom of the casing (1), the clamping blocks (408) are arranged close to the bottoms of the rollers (505), through grooves communicated with the casing (1) are formed in two sides of the inner wall of the groove (3), and the rollers (505) are located in the through grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211023673.XA CN115180479B (en) | 2022-08-22 | 2022-08-22 | Mechanical locking device of elevator without machine room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211023673.XA CN115180479B (en) | 2022-08-22 | 2022-08-22 | Mechanical locking device of elevator without machine room |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115180479A CN115180479A (en) | 2022-10-14 |
| CN115180479B true CN115180479B (en) | 2024-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211023673.XA Active CN115180479B (en) | 2022-08-22 | 2022-08-22 | Mechanical locking device of elevator without machine room |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115180479B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB554673A (en) * | 1942-03-03 | 1943-07-14 | Wm Wadsworth & Sons Ltd | Improvements relating to safety devices for lifts or elevators |
| CN105438916A (en) * | 2015-12-28 | 2016-03-30 | 西南交通大学 | Mechanical automatic unlocking safety gear of elevator |
| CN209974042U (en) * | 2019-04-01 | 2020-01-21 | 苏州固源电梯部件有限公司 | Forced driving type household elevator |
| CN211004043U (en) * | 2019-11-13 | 2020-07-14 | 荆萃 | Rail clamping device for installation and maintenance of elevator |
| CN215558175U (en) * | 2021-06-11 | 2022-01-18 | 丁存良 | Elevator safety device |
| CN216426421U (en) * | 2021-11-26 | 2022-05-03 | 瑞迅三洋电梯(广东)有限公司 | Elevator locking device without machine room |
| CN114671345A (en) * | 2022-04-12 | 2022-06-28 | 葛丹丹 | Gantry crane rail clamping device |
-
2022
- 2022-08-22 CN CN202211023673.XA patent/CN115180479B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB554673A (en) * | 1942-03-03 | 1943-07-14 | Wm Wadsworth & Sons Ltd | Improvements relating to safety devices for lifts or elevators |
| CN105438916A (en) * | 2015-12-28 | 2016-03-30 | 西南交通大学 | Mechanical automatic unlocking safety gear of elevator |
| CN209974042U (en) * | 2019-04-01 | 2020-01-21 | 苏州固源电梯部件有限公司 | Forced driving type household elevator |
| CN211004043U (en) * | 2019-11-13 | 2020-07-14 | 荆萃 | Rail clamping device for installation and maintenance of elevator |
| CN215558175U (en) * | 2021-06-11 | 2022-01-18 | 丁存良 | Elevator safety device |
| CN216426421U (en) * | 2021-11-26 | 2022-05-03 | 瑞迅三洋电梯(广东)有限公司 | Elevator locking device without machine room |
| CN114671345A (en) * | 2022-04-12 | 2022-06-28 | 葛丹丹 | Gantry crane rail clamping device |
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| Publication number | Publication date |
|---|---|
| CN115180479A (en) | 2022-10-14 |
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Effective date of registration: 20240123 Address after: 402260 No.2 Fuxing Avenue, Shuangfu New District, Jiangjin District, Chongqing Applicant after: CHONG QING ENERGY College Country or region after: China Address before: No. 15, Guanmenshan Group, Langba Village, Tielu Township, Dechang County, Liangshan Yi Autonomous Prefecture, Sichuan Province, 615500 Applicant before: Chen Riti Country or region before: China |
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