CN213622976U - Span adjustable lifting beam machine - Google Patents
Span adjustable lifting beam machine Download PDFInfo
- Publication number
- CN213622976U CN213622976U CN202022592843.9U CN202022592843U CN213622976U CN 213622976 U CN213622976 U CN 213622976U CN 202022592843 U CN202022592843 U CN 202022592843U CN 213622976 U CN213622976 U CN 213622976U
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- wheel
- servo motor
- span
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 20
- 230000007704 transition Effects 0.000 claims description 18
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 208000032369 Primary transmission Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Load-Engaging Elements For Cranes (AREA)
Abstract
The utility model discloses a span adjustable bale handle machine, including the crossbeam, a side of crossbeam is provided with adjusts the structure, the lower fixed surface who adjusts the structure is connected with the fixed block, the lower fixed surface of the fixed block of fixed block is connected with braced frame, braced frame's lower fixed surface is connected with the box, the inside of box is provided with transmission structure, it includes slip snap ring, rack, spacing case, gear, screw rod and one-level servo motor to adjust the structure. This span adjustable handle machine through the cooperation of gyro wheel, transmission structure, makes this span adjustable handle machine possess both can lateral shifting, also can vertical removal's effect to play the effect of being convenient for to remove, through the cooperation setting of adjusting structure and crossbeam, can remove through the indirect braced frame that drives of one-level servo motor at the in-process that uses, and then played the effect that improves the suitability, reached adjustable span's purpose.
Description
Technical Field
The utility model relates to a bale lifter technical field specifically is a span adjustable bale lifter.
Background
The beam lifter is a portal crane specially designed for bridge construction. The beam lifting machine mainly comprises an assembled main beam, supporting legs, a crown block and the like, and the components are connected by pin shafts and high-strength bolts, so that the beam lifting machine is easy to disassemble, assemble and transport; compared with the common gantry crane, the gantry crane has the advantages of convenient and fast installation, economy and practicability. The method is suitable for frequently-flowing road and bridge construction units.
The bale lifter is the mechanical equipment commonly used in building and bridge engineering, be used for carrying out lifting and moving to the beam structure, general bale lifter is by hoisting mechanism, running gear gets mechanism etc. and divides the distribution to constitute with pressing from both sides, but present bale lifter still has certain defect when using on the current market, general bale lifter is not convenient for press from both sides the beam structure of different spans and gets fixedly, when carrying the lifting to the beam structure of different spans, the operation is comparatively troublesome, and when the bale lifter used a period of time after or proruption situation, need overhaul work to the bale lifter, but current bale lifter often needs other mechanism to assist the staff to scramble the bale lifter and overhaul work, and the protectiveness is relatively poor. Therefore, the prior beam lifting machine has the defects of incapability of adjusting span, inconvenience in maintenance and the like.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a span adjustable bale handle machine possesses advantages such as can adjust span and easy access, has solved the problem that can not adjust the span and be not convenient for overhaul.
(II) technical scheme
For realizing the above-mentioned span and the convenient to overhaul purpose of adjusting, the utility model provides a following technical scheme: a span adjustable lifting beam machine comprises a cross beam, wherein an adjusting structure is arranged on one side surface of the cross beam, a fixed block is fixedly connected to the lower surface of the adjusting structure, a supporting frame is fixedly connected to the lower surface of the fixed block, a box body is fixedly connected to the lower surface of the supporting frame, a transmission structure is arranged in the box body, the adjusting structure comprises a sliding snap ring, a rack, a limiting box, a gear, a screw rod and a one-level servo motor, one side of the outer side surface of the cross beam is in sliding connection with the sliding snap ring, the lower surface of the cross beam is fixedly connected with the rack, the lower surface of the sliding snap ring is fixedly connected with the limiting box, the inner side wall of the limiting box is movably connected with the gear through a rotating rod, the gear is meshed with the rack, the inner, the output end of the primary servo motor is fixedly connected with the screw rod, and one side face of the screw rod is matched with the gear.
Preferably, the quantity of adjusting the structure is two altogether, and is the symmetric distribution, the lateral surface middle part sliding connection of crossbeam has the activity ring, the lower fixed surface of activity ring is connected with the lifting hook, the cross-sectional shape of crossbeam is cylindrical, the lower surface and the fixed block fixed connection of spacing box.
Preferably, a plurality of supporting rods are arranged inside the supporting frame, a supporting tripod is fixedly connected to one side of the outer side face of the supporting frame, the upper surface of the supporting tripod is fixedly connected with the fixing block, and a through hole is formed in one side of the outer side face of the supporting tripod.
Preferably, a plurality of supporting rods are arranged inside the supporting frame, a supporting tripod is fixedly connected to one side of the outer side face of the supporting frame, the upper surface of the supporting tripod is fixedly connected with the fixing block, and a through hole is formed in one side of the outer side face of the supporting tripod.
Preferably, the output end of the secondary servo motor is fixedly connected with the driving wheel, one side face of the driving wheel is in transmission connection with the driven wheel through a belt, the inner wall of the driven wheel is movably connected with a connecting rod, one end of the connecting rod is fixedly connected with the supporting frame, and one side of the outer side face of the connecting rod is movably connected with the inner wall of the primary driving wheel.
Preferably, one side surface of the primary driving wheel is in transmission connection with the secondary driving wheel through a conveying belt, one side surface of the conveying belt is fixedly connected with the bearing box, the inner wall of the secondary driving wheel is movably connected with a rotating rod, and one end of the rotating rod is fixedly connected with the fixing block.
Preferably, the transmission structure comprises a three-stage servo motor, a driving transition wheel, a driven transition wheel, a chain wheel and a chain, the inner bottom wall of the box body is fixedly connected with the three-stage servo motor through a three-stage servo motor seat, and the output end of the three-stage servo motor is fixedly connected with the driving transition wheel.
Preferably, one side surface of the driving transition wheel is in transmission connection with the driven transition wheel through a connecting rope, the inner wall of the driven transition wheel is fixedly connected with the chain wheel through a fixed rod, and the outer side surface of the chain wheel is in transmission connection with a chain.
Preferably, the interior roof fixedly connected with electric telescopic handle of box, electric telescopic handle's expansion end terminal surface fixedly connected with gyro wheel, the quantity of electric telescopic handle and gyro wheel is four, and divide into two sets of symmetric distribution, every group the quantity of electric telescopic handle and gyro wheel is two, and equidistant distribution.
(III) advantageous effects
Compared with the prior art, the utility model provides a span adjustable bale handle machine possesses following beneficial effect:
1. this span adjustable handle machine through the cooperation of gyro wheel, transmission structure, makes this span adjustable handle machine possess both can lateral shifting, also can vertical removal's effect to play the effect of being convenient for to remove, through the cooperation setting of adjusting structure and crossbeam, can remove through the indirect braced frame that drives of one-level servo motor at the in-process that uses, and then played the effect that improves the suitability, reached adjustable span's purpose.
2. This span adjustable handle machine, through braced frame, the setting of fixed block and support tripod, make this span adjustable handle machine possess firmly, stable effect, thereby played and avoided appearing rocking when using, the effect of the unstable condition, setting through elevation structure, in-process maintainer who uses can take the bearing box and rise to the take the altitude and overhaul, and then played and need not maintainer climb up to go on the effect of overhauing, reached convenient to overhaul, the purpose of security improves.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of a span adjustable beam lifter provided by the utility model;
fig. 2 is a front sectional structural schematic view of an adjusting structure of a span adjustable beam lifter provided by the utility model;
fig. 3 is a schematic view of a three-dimensional structure of a support frame of a span-adjustable beam lifter provided by the utility model;
fig. 4 is a schematic cross-sectional side view of a lifting beam with adjustable span according to the present invention;
fig. 5 is the utility model provides a span adjustable bale lifter front view partial section structure sketch map.
In the figure: 1. a cross beam; 2. an adjustment structure; 201. a sliding snap ring; 202. a rack; 203. a limiting box; 204. a gear; 205. a screw; 206. a first-stage servo motor; 3. a fixed block; 4. a support frame; 5. a box body; 6. a chain wheel; 7. a movable ring; 8. a hook; 9. a support bar; 10. a supporting tripod; 11. a lifting structure; 1101. a secondary servo motor; 1102. a driving wheel; 1103. a driven wheel; 1104. a primary transmission wheel; 1105. a secondary driving wheel; 1106. a carrying case; 12. a motor case; 13. an electric telescopic rod; 14. a roller; 15. and a chain.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, a span adjustable beam lifter comprises a beam 1, wherein one side surface of the beam 1 is provided with two adjusting structures 2, the adjusting structures 2 are symmetrically distributed, the middle part of the outer side surface of the beam 1 is slidably connected with a movable ring 7, the lower surface of the movable ring 7 is fixedly connected with a lifting hook 8, the cross section of the beam 1 is cylindrical, the lower surface of a limit box 203 is fixedly connected with a fixed block 3, a plurality of support rods 9 are arranged inside a support frame 4, one side of the outer side surface of the support frame 4 is fixedly connected with a support tripod 10, the upper surface of the support tripod 10 is fixedly connected with the fixed block 3, one side of the outer side surface of the support tripod 10 is provided with a through hole, the lower surface of the adjusting structure 2 is fixedly connected with the fixed block 3, the lower surface of the fixed block 3 is fixedly connected with, the lifting structure 11 comprises a secondary servo motor 1101, a driving wheel 1102, a driven wheel 1103, a primary driving wheel 1104, a secondary driving wheel 1105 and a bearing box 1106, wherein a motor box 12 is fixedly connected to one side of the outer side of the box body 5, the inner bottom wall of the motor box 12 is fixedly connected with the secondary servo motor 1101 through a secondary servo motor base, the output end of the secondary servo motor 1101 is fixedly connected with the driving wheel 1102, one side of the driving wheel 1102 is in transmission connection with the driven wheel 1103 through a belt, the inner wall of the driven wheel 1103 is movably connected with a connecting rod, one end of the connecting rod is fixedly connected with the supporting frame 4, one side of the outer side of the connecting rod is movably connected with the inner wall of the primary driving wheel 1104, one side of the primary driving wheel 1104 is in transmission connection with the secondary driving wheel 1105 through a conveying belt, the conveying belt is fixedly connected with the bearing box 1106, the, the lower surface of the supporting frame 4 is fixedly connected with a box body 5, a transmission structure is arranged in the box body 5, the transmission structure comprises a three-stage servo motor, a driving transition wheel, a driven transition wheel, a chain wheel 6 and a chain 15, the inner bottom wall of the box body 5 is fixedly connected with the three-stage servo motor through a three-stage servo motor seat, the output end of the three-stage servo motor is fixedly connected with the driving transition wheel, one side surface of the driving transition wheel is in transmission connection with the driven transition wheel through a connecting rope, the inner wall of the driven transition wheel is fixedly connected with the chain wheel 6 through a fixing rod, the outer side surface of the chain wheel 6 is in transmission connection with the chain 15, the adjusting structure 2 comprises a sliding snap ring 201, a rack 202, a limiting box 203, a gear 204, a screw 205 and a one-stage servo motor 206, one side of the outer side surface of the cross beam 1 is in sliding connection with the sliding snap ring 201, the, spacing case 203's inside wall passes through dwang and gear 204 swing joint, gear 204 and rack 202 intermeshing, spacing case 203's interior diapire passes through one-level servo motor cabinet and one-level servo motor 206 fixed connection, one-level servo motor 206's output and screw rod 205 fixed connection, a side and gear 204 looks adaptation of screw rod 205, the interior roof fixedly connected with electric telescopic handle 13 of box 5, electric telescopic handle 13's expansion end terminal surface fixedly connected with gyro wheel 14, electric telescopic handle 13 and gyro wheel 14's quantity is four, and divide into two sets of symmetric distribution that are, every electric telescopic handle 13 of group and the quantity of gyro wheel 14 are two, and the equidistant distribution.
When the adjustable-span lifting beam machine is used, the chain wheel 6 and the chain 15 are arranged below the adjustable-span lifting beam machine, so that a user can move the adjustable-span lifting beam machine to a specified position, the user can suspend objects through the movable ring 7 and the lifting hook 8, when the span needs to be adjusted, the user can place the roller 14 down through the electric telescopic rod 13 and suspend the chain 15 in the air, then the user starts the primary servo motor 206, the output end of the primary servo motor 206 drives the screw rod 205 to rotate, the screw rod 205 drives the gear 204 to move on the rack 202 and simultaneously drives the sliding snap ring 201 to slide on the cross beam 1, when the sliding snap ring 201 slides, the roller 14 also rolls on the ground, the purpose of adjusting the span is achieved, when the span is adjusted, the user can lift the roller 14 through the electric telescopic rod 13 to enable the chain 15 to be in contact with the ground, namely, the span adjustment is completed, if the span adjustable beam lifting machine needs to be overhauled, a maintenance worker does not need to climb up to overhaul the span adjustable beam lifting machine, the maintenance worker only needs to take the bearing box 1106, then the secondary servo motor 1101 is started, the output end of the secondary servo motor 1101 drives the driving wheel 1102 to rotate, the driving wheel 1102 drives the driven wheel 1103 to rotate through a belt, the driven wheel 1103 drives the primary driving wheel 1104 to rotate, the primary driving wheel 1104 drives the secondary driving wheel 1105 to rotate through a conveying belt, and then the bearing box 1106 can be lifted up, so that the span adjustable beam lifting machine can be overhauled, and the purpose of facilitating overhaul is achieved.
In conclusion, the span-adjustable lifting beam machine has the effects of moving transversely and moving vertically through the matching of the rollers 14 and the transmission structures, so that the effect of convenient movement is achieved, the supporting frame 4 can be indirectly driven to move through the primary servo motor 206 in the using process through the matching arrangement of the adjusting structure 2 and the cross beam 1, the effect of improving the applicability is further achieved, the span-adjustable lifting beam machine has the firm and stable effect through the arrangement of the supporting frame 4, the fixing block 3 and the supporting triangular frame 10, the effects of avoiding the shaking and unstable conditions in the using process are achieved, through the arrangement of the lifting structure 11, a maintainer can take the bearing box 1106 to lift to a certain height for overhauling in the using process, and then has played the effect that does not need the maintainer to climb up to overhaul, has reached the purpose convenient to overhaul, improve the security.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.
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 (9)
1. A span adjustable beam lifting machine, includes crossbeam (1), its characterized in that: an adjusting structure (2) is arranged on one side face of a cross beam (1), a fixing block (3) is fixedly connected to the lower surface of the adjusting structure (2), a supporting frame (4) is fixedly connected to the lower surface of the fixing block (3), a box body (5) is fixedly connected to the lower surface of the supporting frame (4), a transmission structure is arranged inside the box body (5), the adjusting structure (2) comprises a sliding clamping ring (201), a rack (202), a limiting box (203), a gear (204), a screw (205) and a one-level servo motor (206), one side of the outer side face of the cross beam (1) is in sliding connection with the sliding clamping ring (201), the lower surface of the cross beam (1) is fixedly connected with the rack (202), the lower surface of the sliding clamping ring (201) is fixedly connected with the limiting box (203), and the inner side wall of the limiting box (203) is movably connected, gear (204) and rack (202) intermeshing, the interior diapire of spacing case (203) passes through one-level servo motor seat and one-level servo motor (206) fixed connection, the output and screw rod (205) fixed connection of one-level servo motor (206), a side and gear (204) looks adaptation of screw rod (205).
2. A span adjustable beam lifting machine as claimed in claim 1, wherein: the quantity of adjusting structure (2) is two altogether, and is the symmetric distribution, the lateral surface middle part sliding connection of crossbeam (1) has activity ring (7), the lower fixed surface of activity ring (7) is connected with lifting hook (8), the cross-sectional shape of crossbeam (1) is cylindrical, the lower surface and fixed block (3) fixed connection of spacing case (203).
3. A span adjustable beam lifting machine as claimed in claim 1, wherein: the inside of braced frame (4) is provided with a plurality of bracing piece (9), lateral surface one side fixedly connected with support tripod (10) of braced frame (4), the upper surface and fixed block (3) fixed connection of support tripod (10), the through-hole has been seted up to lateral surface one side of support tripod (10).
4. A span adjustable beam lifting machine as claimed in claim 1, wherein: the lifting structure (11) is arranged on the other side of the outer side face of the supporting frame (4), the lifting structure (11) comprises a secondary servo motor (1101), a driving wheel (1102), a driven wheel (1103), a primary driving wheel (1104), a secondary driving wheel (1105) and a bearing box (1106), a motor box (12) is fixedly connected to one side of the outer side face of the box body (5), and the inner bottom wall of the motor box (12) is fixedly connected with the secondary servo motor (1101) through a secondary servo motor base.
5. An adjustable span bolster machine as claimed in claim 4, characterized in that: the output end of the secondary servo motor (1101) is fixedly connected with a driving wheel (1102), one side face of the driving wheel (1102) is in transmission connection with a driven wheel (1103) through a belt, the inner wall of the driven wheel (1103) is movably connected with a connecting rod, one end of the connecting rod is fixedly connected with a supporting frame (4), and one side of the outer side face of the connecting rod is movably connected with the inner wall of a primary driving wheel (1104).
6. An adjustable span bolster machine as claimed in claim 4, characterized in that: one side surface of the main-stage driving wheel (1104) is in transmission connection with the secondary-stage driving wheel (1105) through a conveying belt, one side surface of the conveying belt is fixedly connected with the bearing box (1106), the inner wall of the secondary-stage driving wheel (1105) is movably connected with a rotating rod, and one end of the rotating rod is fixedly connected with the fixed block (3).
7. A span adjustable beam lifting machine as claimed in claim 1, wherein: the transmission structure comprises a three-stage servo motor, a driving transition wheel, a driven transition wheel, a chain wheel (6) and a chain (15), the inner bottom wall of the box body (5) is fixedly connected with the three-stage servo motor through a three-stage servo motor seat, and the output end of the three-stage servo motor is fixedly connected with the driving transition wheel.
8. An adjustable span bolster machine as claimed in claim 7, characterized in that: one side face of the driving transition wheel is in transmission connection with the driven transition wheel through a connecting rope, the inner wall of the driven transition wheel is fixedly connected with the chain wheel (6) through a fixed rod, and the outer side face of the chain wheel (6) is in transmission connection with a chain (15).
9. A span adjustable beam lifting machine as claimed in claim 1, wherein: interior roof fixedly connected with electric telescopic handle (13) of box (5), the expansion end terminal surface fixedly connected with gyro wheel (14) of electric telescopic handle (13), the quantity of electric telescopic handle (13) and gyro wheel (14) is four, and divide into two sets of symmetric distribution, every group the quantity of electric telescopic handle (13) and gyro wheel (14) is two, and equidistant distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022592843.9U CN213622976U (en) | 2020-11-11 | 2020-11-11 | Span adjustable lifting beam machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022592843.9U CN213622976U (en) | 2020-11-11 | 2020-11-11 | Span adjustable lifting beam machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213622976U true CN213622976U (en) | 2021-07-06 |
Family
ID=76632381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022592843.9U Expired - Fee Related CN213622976U (en) | 2020-11-11 | 2020-11-11 | Span adjustable lifting beam machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213622976U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117446676A (en) * | 2023-12-26 | 2024-01-26 | 河南吉尼智能起重机有限公司 | Beam lifting machine with adjustable span for factory |
-
2020
- 2020-11-11 CN CN202022592843.9U patent/CN213622976U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117446676A (en) * | 2023-12-26 | 2024-01-26 | 河南吉尼智能起重机有限公司 | Beam lifting machine with adjustable span for factory |
| CN117446676B (en) * | 2023-12-26 | 2024-03-15 | 河南吉尼智能起重机有限公司 | Beam lifting machine with adjustable span for factory |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109095278B (en) | Building site uses abandonment cable coiling mechanism | |
| CN213622976U (en) | Span adjustable lifting beam machine | |
| CN201990440U (en) | Elevating gear for accuracy assembling of twenty rolling mill | |
| CN106734222B (en) | Replacing device and replacing method for rolling mill lower roll upper speed reducer | |
| CN112194012A (en) | Span adjustable lifting beam machine | |
| CN114180451A (en) | Intelligent warehouse logistics operation platform suitable for various working conditions | |
| CN211034931U (en) | Rail moving device for hoisting plate girder | |
| CN211895868U (en) | Electromechanical device maintenance hoist and mount frame | |
| CN213865193U (en) | Lifting device for small and medium-sized equipment | |
| CN206125686U (en) | Section of jurisdiction structural bar deposits work or material rest | |
| CN215592450U (en) | Roller maintenance car | |
| CN211169550U (en) | Hoisting device for maintaining and replacing speed reducer | |
| CN209259612U (en) | A kind of feeding device for construction | |
| CN213774373U (en) | Construction platform convenient to remove | |
| CN211169589U (en) | High-stability beam lifting machine | |
| CN210122476U (en) | Auxiliary lifting platform for power transformation operation and maintenance | |
| CN208663771U (en) | High-altitude maintenance device inside memorial archway formula milling train | |
| CN113927287A (en) | Disassembly and assembly maintenance equipment and method for gear speed change atomizer | |
| CN216971764U (en) | Double-beam bridge crane convenient to maintain | |
| CN220705095U (en) | Suspension for construction | |
| CN217079583U (en) | Scaffold frame for house construction with adjustable | |
| CN213449400U (en) | Support for civil engineering building convenient to adjust | |
| CN217776851U (en) | Roller dismounting device of lifting and horizontal plane gate | |
| CN221336008U (en) | Roll changing frame for upper and lower rolls | |
| CN214643273U (en) | Simple and easy device is dismantled to roller way speed reducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |