CN112467613A - Large-tonnage insulator mechanical labor-saving lead screw - Google Patents
Large-tonnage insulator mechanical labor-saving lead screw Download PDFInfo
- Publication number
- CN112467613A CN112467613A CN202011301791.3A CN202011301791A CN112467613A CN 112467613 A CN112467613 A CN 112467613A CN 202011301791 A CN202011301791 A CN 202011301791A CN 112467613 A CN112467613 A CN 112467613A
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- Prior art keywords
- lead screw
- assembly
- gear
- mechanical
- worm
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
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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
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
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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
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
Abstract
The invention discloses a large-tonnage insulator mechanical labor-saving lead screw, which is used for replacing a strain insulator and comprises a front clamp assembly connected with a front clamp and a rear clamp assembly connected with a rear clamp, and the large-tonnage insulator mechanical labor-saving lead screw also comprises: the mechanical first driving assembly and the mechanical second driving assembly drive a lead screw of the lead screw assembly to extend and retract through the worm gear and worm transmission assembly; the scheme adopts a worm and gear transmission mode, has large transmission ratio, labor-saving operation and compact structure, can effectively reduce the whole weight and reduce the labor intensity of personnel; meanwhile, the transmission mode of the worm and gear can be self-locked, so that sudden loosening during tightening operation can be effectively prevented, and the use is safe and reliable; the transmission efficiency is effectively improved by adopting a structure that the large gear drives the small gear, and the working efficiency is improved; the speed shell of the screw rod is regulated in a grading way, so that the screw rod is safer.
Description
Technical Field
The invention relates to the technical field of power transmission line maintenance, in particular to a large-tonnage insulator mechanical labor-saving lead screw.
Background
In recent years, with the rapid development of economic construction and the reform of electric power system, the construction of the ultrahigh voltage line in China is in a doubling growth trend. Because the transmission line is in the field and in various pollution areas for a long time, and the operation years of the transmission line are increased and the weather changes, the number of inferior and zero insulators of the transmission line is obviously increased, and the safe and reliable operation of the transmission line of our company is directly influenced. When inferior and zero-value insulators appear, the inferior and zero-value insulators need to be replaced so as to ensure safe and reliable operation of the line.
At present, a lead screw used for replacing a strain insulator in ultra-high voltage live working mainly adopts three transmission modes, namely a hydraulic transmission mode, a gear transmission mode and a ratchet and pawl transmission mode. The hydraulic transmission type lead screw is suitable for large-tonnage insulators (more than 400KN), and is large in size, heavy in weight and prone to oil leakage; the gear transmission type lead screw is suitable for large-tonnage insulators (300KN-400KN), and is large in size and weight; the ratchet wheel and pawl transmission type lead screw is suitable for small-tonnage insulators (below 300 KN), and is difficult to operate.
Super extra-high voltage line overhauls and mostly is open-air, and the rugged traffic of road is inconvenient, and many places all will lean on the maintainer to move on foot, and the maintainer still need carry the maintenance instrument simultaneously, has increased maintainer's intensity of labour among the bulky maintenance instrument intangible. The weight of the hydraulic screw has a large specific gravity in the whole maintenance tool, and meanwhile, the hydraulic screw needs frequent maintenance in daily life and needs to be checked before use. The replacement of the large-tonnage tension insulator mainly comprises the steps of clamping the insulator by a closed fixture and then tightening the insulator string by using a hydraulic lead screw to replace the insulator string. Although the hydraulic screw rod saves labor when being used for tightening the insulator string compared with a conventional common screw rod, the hydraulic screw rod also has the defects of being heavy, complex in maintenance, oil leakage and the like. Particularly, in live-line maintenance, if oil leakage occurs during use, a great potential safety hazard is caused.
Disclosure of Invention
In order to overcome the technical defects of the existing lead screw, the invention adopts a worm and gear mode to drive the lead screw, and provides the labor-saving lead screw of the large-tonnage insulator machinery, which has the advantages of simple structure, safety, reliability and high operation efficiency.
The invention is realized by the following technical scheme:
the invention provides a large-tonnage insulator mechanical labor-saving lead screw for replacing a strain insulator, which comprises a front clamp assembly connected with a front clamp, a rear clamp assembly connected with a rear clamp, and also comprises: the first mechanical driving assembly, the second mechanical driving assembly, the worm and gear transmission assembly and the lead screw assembly are arranged on the base;
the first gear of the mechanical first driving assembly is meshed with the second gear of the mechanical second driving assembly to rotate together, the worm of the worm gear and worm transmission assembly is coaxial with the second gear, the worm gear of the worm screw assembly and worm gear transmission assembly drives the lead screw in the lead screw assembly to rotate, the front clamping assembly is connected with the lead screw nut of the lead screw assembly, the rear clamping assembly is connected to the opposite side of the front clamping assembly but is not in contact with the lead screw, and the diameters of the first gear and the second gear are different.
The lead screw can be a trapezoidal lead screw.
The further optimization scheme is that the worm gear and worm transmission assembly further comprises: the first deep groove ball bearing, the second deep groove ball bearing and the end face bearing are arranged on the same shaft as the turbine, the shaft extension of the turbine, the first deep groove ball bearing, the second deep groove ball bearing and the end face bearing is integrated with the screw rod, the first deep groove ball bearing and the second deep groove ball bearing are respectively arranged on the left side and the right side of the turbine, and the end face bearing is adjacent to the second deep groove ball bearing.
The mechanical first driving assembly further comprises a first driving shaft, the first gear rotates along with the first driving shaft, the mechanical second driving assembly further comprises a second driving shaft, and the second gear rotates along with the second driving shaft.
In a further preferred embodiment, the second drive shaft is provided with helical teeth engaging with the turbine wheel at a position extending in contact with the turbine wheel.
The further optimization scheme is that the fixture further comprises a lead screw nut extension sleeve, and the front fixture is connected with the lead screw nut through the lead screw nut extension sleeve.
The further optimization scheme is that the end part of the first driving shaft is cut into a polygonal cylinder to form a first handle, and the end part of the second driving shaft is cut into a polygonal cylinder to form a second handle.
The further optimization scheme is that the device comprises a housing, the mechanical first driving component, the mechanical second driving component and the worm gear transmission component are wrapped in the housing, and the first handle and the second handle are exposed outside the housing.
In a further preferred embodiment, the first handle is longer than the second handle. Because the diameter of the first gear is larger than that of the second gear in the scheme, the first handle is the main adjusting handle, the first handle is arranged to be longer,
the further optimization scheme is that the structure of the front fixture assembly and the rear fixture assembly comprises: the U-shaped clamp is fixed on the U-shaped clamp through a bolt, a front clamp or a rear clamp.
The further optimization scheme is that the device further comprises a first connecting piece, and the rear clamping device assembly is connected to the housing on the opposite side of the rear clamping device assembly through the first connecting piece.
The working principle of the invention is as follows: the invention provides a mechanical labor-saving lead screw, which mainly comprises a core transmission device, a first driving shaft (a large gear shaft), a first gear (a large gear), a second gear (a small gear), a worm and a trapezoidal lead screw, wherein an operator enables the first driving shaft and the second driving shaft to rotate by operating a first handle and a second handle, the first gear drives the second gear on the worm to rotate so as to drive the worm to rotate, the rotating worm drives a turbine fixed on the trapezoidal lead screw to rotate and finally drives the trapezoidal lead screw to move, a lead screw nut drives a front fixture assembly to move, and an insulator string is tightened or stretched by stretching the trapezoidal lead screw, so that the operator can conveniently replace insulators.
At present, a large-tonnage insulator is usually replaced by using a hydraulic transmission type lead screw, an extra-high voltage line is overhauled in the field, the road is rugged and inconvenient in traffic, a plurality of places need to move forward on foot by maintainers, the maintainers need to carry overhaul tools simultaneously, and the labor intensity of the maintainers is increased in the intangible manner by the heavy overhaul tools. The weight of the hydraulic screw has a large specific gravity in the whole maintenance tool, and meanwhile, the hydraulic screw needs frequent maintenance in daily life and needs to be checked before use. The replacement of the large-tonnage tension insulator mainly comprises the steps of clamping the insulator by a closed fixture and then tightening the insulator string by using a hydraulic lead screw to replace the insulator string. Although the hydraulic screw rod saves labor when being used for tightening the insulator string compared with a conventional common screw rod, the hydraulic screw rod also has the defects of being heavy, complex in maintenance, oil leakage and the like. Particularly, in live overhaul, if oil leakage occurs during use, great potential safety hazard can be caused; the mechanical labor-saving lead screw designed by the scheme adopts a worm and gear transmission mode, and can simultaneously realize the advantages of large transmission ratio and compact structure and overcome the defects of a hydraulic lead screw; on the other hand, the existing screw rod used for replacing the strain insulator is adjusted according to the method, in the scheme, the diameters of the first gear and the second gear are not equal, when the first handle and the second handle are correspondingly adjusted, the stretching speed of the screw rod is inconsistent, and the handle corresponding to the pinion can be adjusted under the condition of fine adjustment, so that the movement speed of the screw rod is reduced, and insulator devices and the like are prevented from being damaged; the grading adjustment mechanical structure designed by the invention enables operators to operate more conveniently and safely.
The adopted worm and gear transmission mode utilizes the self-locking principle in worm and gear transmission, can effectively prevent sudden loosening during tightening operation, and is safe and reliable to use. In the process of replacing the insulator, the large gear is used for tightening the lead screw, so that labor is saved, and the insulator can be conveniently replaced by an operator.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the large-tonnage insulator mechanical labor-saving lead screw provided by the invention adopts a worm and gear transmission mode, has a large transmission ratio, is labor-saving in operation and compact in structure, and can effectively reduce the whole weight and reduce the labor intensity of personnel; meanwhile, the transmission mode of the worm and gear can be self-locked, so that sudden loosening during tightening operation can be effectively prevented, and the use is safe and reliable.
2. According to the large-tonnage insulator mechanical labor-saving lead screw provided by the invention, the transmission efficiency is effectively improved by adopting a structure that the large gear drives the small gear, the working efficiency is improved, and the speed of the lead screw is regulated in a grading manner, so that the mechanical structure is safer.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.
FIG. 1 is a schematic view of a longitudinal section of a mechanical labor-saving lead screw of the present invention;
fig. 2 is a cross-sectional structural schematic diagram of the mechanical labor-saving lead screw of the invention.
In the drawings:
1-a mechanical first drive assembly, 11-a first gear, 12-a first drive shaft, 13-a first handle, 2-a second drive assembly, 21-a second gear, 22-a second drive shaft, 23-a second handle, 3-a worm and worm drive assembly, 31-a worm, 32-a worm wheel, 33-a first deep groove ball bearing, 34-a second deep groove ball bearing, 35-an end face bearing, 4-a lead screw assembly, 41-a lead screw, 42-a lead screw nut, 5-a damping spring, 6-a housing, 7-a front clamp assembly, 8-a rear clamp assembly, 9-a first connecting piece, and 10-a screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1 and fig. 2, the laborsaving lead screw of large-tonnage insulator machinery that this embodiment designed for change strain insulator, including connecting the preceding fixture subassembly 7 of preceding card, connect the back fixture subassembly 8 of back card, its characterized in that still includes: the device comprises a mechanical first driving assembly 1, a mechanical second driving assembly 2, a worm and gear transmission assembly 3 and a lead screw assembly 4;
the first gear 11 of the mechanical first driving assembly 1 is meshed with the second gear 21 of the mechanical second driving assembly 2 to rotate together, the worm 31 of the worm gear and worm transmission assembly 3 is coaxial with the second gear 21, the worm gear 32 of the worm gear and worm transmission assembly 3 of the lead screw assembly 4 drives the lead screw 41 in the lead screw assembly 4 to rotate, the front clamping apparatus assembly 7 is connected with the lead screw nut 42 of the lead screw assembly 4, and the rear clamping apparatus assembly 8 is connected to the opposite side of the front clamping apparatus assembly 7 but is not in contact with the lead screw 41.
The worm gear and worm drive assembly 3 further comprises: the first deep groove ball bearing 33, the second deep groove ball bearing 34 and the end face bearing 34 are arranged on the same shaft with the turbine 32, the shaft extension of the turbine 32, the first deep groove ball bearing 33, the second deep groove ball bearing 34 and the end face bearing 35 is integrated with the screw rod 41, the first deep groove ball bearing 33 and the second deep groove ball bearing 34 are respectively arranged on the left side and the right side of the turbine 32, and the end face bearing 35 is close to the second deep groove ball bearing 34.
The mechanical first drive assembly 1 further comprises a first drive shaft 12, the first gear 11 rotates with the first drive shaft 12, the mechanical second drive assembly 2 further comprises a second drive shaft 22, and the second gear 21 rotates with the second drive shaft 22.
The second drive shaft 22 is provided with helical teeth that engage the worm gear 32 at a position where it extends to contact the worm gear 32.
The fixture comprises a front fixture 1 and a screw nut 42, and is characterized by further comprising a screw nut extension sleeve, wherein the front fixture 1 is connected with the screw nut 42 through the screw nut extension sleeve 5.
The end of the first driving shaft 12 is cut into a polygonal cylinder to form a first handle 13, and the end of the second driving shaft 22 is cut into a polygonal cylinder to form a second handle 23.
The mechanical first driving component 1, the mechanical second driving component 2 and the worm gear transmission component 3 are wrapped in the housing 6, and the first handle 13 and the second handle 23 are exposed outside the housing 6.
The first handle 13 is longer than the second handle 23.
Preceding fixture subassembly 7 and back fixture subassembly 8 structure include: the U-shaped clamp is fixed on the U-shaped clamp through a bolt, a front clamp or a rear clamp. As shown in fig. 1, the rear clamp assembly 8 structurally includes: u-shaped clamp 83, bolt 81 and nut 82. The front fixture assembly 7 and the rear fixture assembly 8 are respectively clamped with closed clamps or end clamps at two ends of the insulator string.
And a first connector 9, wherein the rear clamp assembly 8 is connected to the housing 6 on the opposite side of the front clamp assembly 7 through the first connector 9. The first connector 9 is fixed to the housing 6 on the opposite side of the front clamp assembly 7 by screws 10.
An operator operates the first handle 13 or the second handle 23 to rotate, the first gear (the big gear) drives the second gear (the small gear) on the worm 31 to rotate to drive the worm 31 to rotate, the rotating worm 31 further drives the worm wheel 32 fixed on the trapezoidal lead screw 41 to rotate, and finally the trapezoidal lead screw 41 is driven to move, and the purpose of tightening and loosening the lead screw 41 is achieved through the stretching of the trapezoidal lead screw 41.
The mechanical labor-saving lead screw has the technical parameters that:
(1) the labor-saving lead screw has the transmission ratio that the worm modulus is 1.6 and the number of turbine teeth is 38;
(2) when F is 8000N, the torque produced is 15.3 n.m;
(3) when the length of the first handle is 300mm and the rated load is 80KN, the torsion applied is 51N, and when the length of the first handle is 400mm, the torsion applied is 38.3N; by varying the length of the handle, the desired torque is achieved.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a laborsaving lead screw of large-tonnage insulator machinery for change strain insulator, including preceding fixture subassembly (7) of connecting the front card, connect back fixture subassembly (8) of back card, its characterized in that still includes: the device comprises a mechanical first driving assembly (1), a mechanical second driving assembly (2), a worm and gear transmission assembly (3) and a lead screw assembly (4);
a first gear (11) of a mechanical first driving assembly (1) and a second gear (21) of a mechanical second driving assembly (2) are meshed together to rotate, a worm (31) of a worm and gear transmission assembly (3) is coaxial with the second gear (21), a worm wheel (32) of the worm and gear transmission assembly (3) of a lead screw assembly (4) drives a lead screw (41) in the lead screw assembly (4) to rotate, a front fixture assembly (7) is connected with a lead screw nut (42) of the lead screw assembly (4), a rear fixture assembly (8) is connected to the opposite side of the front fixture assembly (7) but is not in contact with the lead screw (41), and the diameters of the first gear (11) and the second gear (21) are unequal.
2. The large-tonnage insulator mechanical labor-saving lead screw of claim 1, wherein the worm gear and worm drive assembly (3) further comprises: the first deep groove ball bearing (33), the second deep groove ball bearing (34) and the end face bearing (34) are arranged on the same shaft as the turbine (32), the shaft extension where the turbine (32), the first deep groove ball bearing (33), the second deep groove ball bearing (34) and the end face bearing (35) are arranged is integrated with the screw rod (41), the first deep groove ball bearing (33) and the second deep groove ball bearing (34) are respectively arranged on the left side and the right side of the turbine (32), and the end face bearing (35) is close to the second deep groove ball bearing (34).
3. The large-tonnage insulator mechanical labor-saving lead screw according to claim 1, wherein the mechanical first drive assembly (1) further comprises a first drive shaft (12), the first gear (11) rotates with the first drive shaft (12), the mechanical second drive assembly (2) further comprises a second drive shaft (22), and the second gear (21) rotates with the second drive shaft (22).
4. The large-tonnage insulator mechanical labor-saving lead screw according to claim 3, characterized in that the second driving shaft (22) is provided with a helical tooth engaged with the turbine (32) at a position where the second driving shaft is extended to contact with the turbine (32).
5. The large-tonnage insulator mechanical labor-saving lead screw according to claim 4, further comprising a lead screw nut extension sleeve (5), wherein the front clamp (1) is connected with the lead screw nut (42) through the lead screw nut extension sleeve (5).
6. The large-tonnage insulator mechanical labor-saving lead screw according to claim 3, wherein the end of the first driving shaft (12) is cut into a polygonal cylinder shape to form a first handle (13), and the end of the second driving shaft (22) is cut into a polygonal cylinder shape to form a second handle (23).
7. The large-tonnage insulator mechanical labor-saving lead screw according to claim 6, characterized by comprising a housing (6), wherein the mechanical first driving component (1), the mechanical second driving component (2) and the worm gear transmission component (3) are wrapped in the housing (6), and the first handle (13) and the second handle (23) are exposed outside the housing (6).
8. The mechanical labor-saving lead screw for large-tonnage insulators as claimed in claim 7, wherein the first handle (13) is longer than the second handle (23).
9. The large-tonnage insulator mechanical labor-saving lead screw of claim 1, wherein the front clamp assembly (7) and the rear clamp assembly (8) structurally comprise: the U-shaped clamp is fixed on the U-shaped clamp through a bolt, a front clamp or a rear clamp.
10. The large-tonnage insulator mechanical labor-saving lead screw according to claim 1, further comprising a first connecting member (9), wherein the rear fixture assembly (8) is connected to the housing (6) on the opposite side of the rear fixture assembly (7) through the first connecting member (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011301791.3A CN112467613A (en) | 2020-11-19 | 2020-11-19 | Large-tonnage insulator mechanical labor-saving lead screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011301791.3A CN112467613A (en) | 2020-11-19 | 2020-11-19 | Large-tonnage insulator mechanical labor-saving lead screw |
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| Publication Number | Publication Date |
|---|---|
| CN112467613A true CN112467613A (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011301791.3A Pending CN112467613A (en) | 2020-11-19 | 2020-11-19 | Large-tonnage insulator mechanical labor-saving lead screw |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202906298U (en) * | 2012-11-01 | 2013-04-24 | 湖北省电力公司检修分公司 | Extra-high voltage (EHV) large-tonnage electric turbine worm closed clamp |
| CN104455221A (en) * | 2013-09-16 | 2015-03-25 | 天津市万新传动设备有限公司 | Transmission device for transmission roller |
| CN106838071A (en) * | 2016-03-16 | 2017-06-13 | 倪世荣 | Helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically |
| CN107270027A (en) * | 2017-05-16 | 2017-10-20 | 哈尔滨工程大学 | A kind of support wheel type pipeline detection robot of optimization |
| CN209233315U (en) * | 2018-12-29 | 2019-08-09 | 宝鸡市韦思特电气有限公司 | A kind of cylindrical worm and worm wheel driving chest expander for insulator clamp apparatus |
| CN211082715U (en) * | 2019-10-31 | 2020-07-24 | 海门市帕源路桥建设有限公司 | High-torque worm gear reducer |
| CN211239083U (en) * | 2019-11-29 | 2020-08-11 | 中国南方电网有限责任公司超高压输电公司广州局 | Large-tonnage linear labor-saving wire hanging device |
-
2020
- 2020-11-19 CN CN202011301791.3A patent/CN112467613A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202906298U (en) * | 2012-11-01 | 2013-04-24 | 湖北省电力公司检修分公司 | Extra-high voltage (EHV) large-tonnage electric turbine worm closed clamp |
| CN104455221A (en) * | 2013-09-16 | 2015-03-25 | 天津市万新传动设备有限公司 | Transmission device for transmission roller |
| CN106838071A (en) * | 2016-03-16 | 2017-06-13 | 倪世荣 | Helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically |
| CN107270027A (en) * | 2017-05-16 | 2017-10-20 | 哈尔滨工程大学 | A kind of support wheel type pipeline detection robot of optimization |
| CN209233315U (en) * | 2018-12-29 | 2019-08-09 | 宝鸡市韦思特电气有限公司 | A kind of cylindrical worm and worm wheel driving chest expander for insulator clamp apparatus |
| CN211082715U (en) * | 2019-10-31 | 2020-07-24 | 海门市帕源路桥建设有限公司 | High-torque worm gear reducer |
| CN211239083U (en) * | 2019-11-29 | 2020-08-11 | 中国南方电网有限责任公司超高压输电公司广州局 | Large-tonnage linear labor-saving wire hanging device |
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Application publication date: 20210309 |
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