CN109081258B - Heavy-duty type multistage spiral lifting device - Google Patents
Heavy-duty type multistage spiral lifting device Download PDFInfo
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- CN109081258B CN109081258B CN201811138679.5A CN201811138679A CN109081258B CN 109081258 B CN109081258 B CN 109081258B CN 201811138679 A CN201811138679 A CN 201811138679A CN 109081258 B CN109081258 B CN 109081258B
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- 230000009467 reduction Effects 0.000 claims description 21
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 20
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 239000003638 chemical reducing agent Substances 0.000 abstract description 7
- 239000010720 hydraulic oil Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 description 3
- 241001397809 Hakea leucoptera Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/20—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through multiple or change-speed gearings
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transmission Devices (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention provides an electric multistage spiral transmission lifting device, which is characterized in that a servo motor is used as power to drive a matched gear reducer to drive a trapezoid transmission spiral to rotate, so that lifting of a mechanism is realized. The sequential lock arranged in the mechanism can ensure that the basic screw rod and the N-level tubular transmission screw rod extend step by step when the mechanism extends out, and the basic screw rod and the N-level tubular transmission screw rod retract step by step when the mechanism retracts; the invention adopts a nested structure, can meet the requirements of narrow installation space, large lifting stroke, large working load and high repeated positioning precision of the lifting mechanism, and does not allow various machines and workplaces adopting combustible media such as hydraulic oil. The independent buffer mechanism of the mechanism is used for leveling equipment with uneven basic supporting surface when a plurality of lifting devices are used in a combined mode, and the manual mechanism is used for manually operating the mechanism when a motor of the lifting device cannot work normally, so that the defects of low positioning precision of a lifting system, high processing and manufacturing cost, environment pollution, high unstable failure rate of the system and the like are overcome.
Description
Technical Field
The invention relates to a spiral lifting device, in particular to a heavy-duty multi-stage spiral lifting device.
Background
The current heavy-duty engineering vehicle, aerospace equipment and communication equipment widely adopt a single-stage or multi-stage hydraulic cylinder as driving power of a load, and the following defects of a hydraulic driving system are found in a long-term application process:
(1) The hydraulic signal transmission speed is low, correction is not easy to carry out, and the positioning accuracy is low;
(2) The hydraulic system has complex structure and high processing and manufacturing cost;
(3) The temperature has a great influence on the viscosity of hydraulic oil, so that the change of the temperature has obvious influence on the system performance, the friction loss is increased at low temperature, the leakage is increased at high temperature, and the use requirement of equipment with a great temperature difference cannot be well met.
(4) Leakage of the hydraulic system is a weakness which cannot be overcome by the system, so that the hydraulic system pollutes the environment and fires are easy to cause;
(5) The hydraulic system is sensitive to environmental pollution, and pollution of hydraulic oil can cause that the control valve blocks the actuating mechanism and can not work normally.
Disclosure of Invention
The invention provides a heavy-duty multi-stage spiral lifting device, which can solve the problems of low positioning precision, high processing and manufacturing cost, environmental pollution and high unstable failure rate of a lifting system in the prior art.
The heavy-duty multistage spiral lifting device comprises a spiral lifting assembly and a driving device for driving the spiral lifting assembly, wherein the spiral lifting assembly comprises an outer sleeve, and a primary lifting assembly, a secondary lifting assembly and a sequence lock assembly which are arranged in the outer sleeve;
the primary lifting assembly is provided with a primary lifting cylinder, a primary lifting screw rod arranged in the primary lifting cylinder and a primary lifting nut matched with the primary lifting screw rod, and the primary lifting nut and the primary lifting cylinder are detachably connected together;
the secondary lifting assembly is sleeved in the primary lifting cylinder and is provided with a secondary lifting cylinder, a secondary lifting screw rod arranged in the secondary lifting cylinder and a secondary lifting nut matched with the secondary lifting screw rod, and an accommodating space is formed in the inward concave shape of the input end of the secondary lifting screw rod;
the sequence lock assembly is provided with a first self-locking part and a second self-locking part which is matched with the first self-locking part, the first self-locking part is connected with the output end of the primary lifting screw, the second self-locking part is connected with the input end of the secondary lifting screw and is arranged in the accommodating space, and the output end of the primary lifting screw extends into the accommodating space and is separated from or connected with the secondary lifting screw through the sequence lock assembly;
the buffer pin sleeve stretches into the bearing ring through the buffer device, the bearing ring is sleeved at the input end of the primary lifting screw, a light hole is formed in the input end of the primary lifting screw and stretches into the outer end of the output shaft of the drive device to form a sliding pair, a light hole matched with the lifting screw is formed in the outer end of the output shaft of the drive device, and the sliding pin shaft penetrates through each corresponding light hole to form the sliding pair.
More preferably, the buffer device is a compression spring, sleeved outside the buffer pin sleeve, and a blocking part is arranged on the buffer pin sleeve so that the buffer device acts between the blocking part and the bearing ring.
More preferably, the primary lifting nut is also sleeved with a needle bearing, the needle bearing is sleeved with a primary guide seat which is in clearance fit with the outer sleeve, and the outer side of the primary guide seat is clamped with a primary guide ring.
More preferably, a first-stage guiding positioning sleeve is arranged between the outer end of the first-stage lifting cylinder and the outer end of the outer sleeve.
More preferably, the second-stage lifting nut is in clearance fit with the inner wall of the first-stage lifting cylinder, and the outer end of the second-stage lifting nut is clamped and provided with a second-stage guide ring.
More preferably, a secondary guiding and positioning sleeve is arranged between the outer end of the secondary lifting cylinder and the outer end of the primary lifting cylinder.
More preferably, the first self-locking part is detachably arranged at the output end of the primary lifting screw, a plurality of grooves are formed in the end face of the first self-locking part matched with the second self-locking part, and a plurality of protrusions matched with the grooves are formed in the end face of the second self-locking part matched with the first self-locking part.
More preferably, the driving device is a speed reducer, including:
a reduction gearbox body;
the driving gear is arranged in the reduction gearbox;
the driving shaft is connected with the driving gear;
the servo motor is arranged outside the reduction gearbox, and the output end of the servo motor stretches into the reduction gearbox and is connected with the driving shaft;
the driven gear is arranged in the reduction gearbox and meshed with the driving gear; and
the driven shaft is connected with the driven gear and extends out of the reduction box body and is the output end of the driving device.
More preferably, the driving shaft extends out of the reduction box body at the opposite side of the servo motor, a manual clutch lever is arranged at the extending end, a clutch is sleeved outside the matching end of the manual clutch lever and the driving shaft, one end of the clutch is meshed with the driving gear, the other end of the clutch is provided with a clamping groove matched with a clutch pin, and the clutch pin is arranged on the manual clutch lever and is clamped or separated from the clutch under the action of the manual clutch lever.
More preferably, a handle is further arranged on the outer end part of the manual clutch lever.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides an electric multistage spiral transmission lifting device, which is characterized in that a servo motor is used as power to drive a matched gear reducer to drive a trapezoid transmission spiral to rotate, so that lifting of a mechanism is realized. The sequential lock arranged in the mechanism can ensure that the basic screw rod and the N-level tubular transmission screw rod extend step by step when the mechanism extends out, and the basic screw rod and the N-level tubular transmission screw rod retract step by step when the mechanism retracts;
2. the invention adopts a nested structure, can meet the requirements of narrow installation space, large lifting stroke, large working load and high repeated positioning precision of the lifting mechanism, and does not allow various machines and workplaces adopting combustible media such as hydraulic oil. The buffer mechanism arranged independently of the mechanism is used for leveling equipment when the plurality of lifting devices are used in combination and the foundation supporting surface is not at ordinary times. The manual mechanism arranged independently of the mechanism is used for manually operating the mechanism when the lifting device motor cannot work normally;
3. the invention effectively overcomes the defects of low positioning precision, high processing and manufacturing cost, environmental pollution, high unstable failure rate of the system and the like of the lifting system.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the sequence lock assembly 15 in one embodiment of the invention;
FIG. 3 is an enlarged view of a portion of a spiral lifting assembly in accordance with one embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of a driving device according to an embodiment of the present invention;
fig. 5 is an enlarged view of a portion of the manual clutch lever 23 in one embodiment of the present invention.
Reference numerals illustrate:
1. the outer sleeve, 2, the first-stage lifting screw rod, 3, the bearing ring, 4, the compression spring, 5, the buffer pin bush, 6, the needle bearing, 7, the first-stage guide ring, 8, the first-stage guide seat, 9, the first-stage lifting nut, 10, the second-stage lifting screw rod, 11, the second-stage guide ring, 12, the second-stage lifting nut, 13, the second-stage lifting cylinder, 14, the first-stage lifting cylinder, 15, the sequential lock assembly, 15-1, the first self-locking part, 15-2, the second self-locking part, 15-3, the bulge, 15-4, the groove, 16, the first-stage guide positioning sleeve, 17, the second-stage guide positioning sleeve, 18, the driven shaft, 19, the reduction box body, 20, the driven gear, 21, the servo motor, 22, the driving gear, 23, the manual clutch lever, 24, the driving shaft, 25, the sliding pin, 26, the clutch, 27, the clutch pin, 28 and the handle.
Detailed Description
One embodiment of the present invention will be described in detail below with reference to the attached drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.
As shown in fig. 1 to 5, the heavy-duty multi-stage spiral lifting device provided by the embodiment of the invention comprises a spiral lifting assembly and a driving device for driving the spiral lifting assembly, wherein the spiral lifting assembly comprises an outer sleeve 1, and a primary lifting assembly, a secondary lifting assembly and a sequence lock assembly 15 which are arranged in the outer sleeve 1;
the primary lifting assembly is provided with a primary lifting cylinder 14, a primary lifting screw rod 2 arranged in the primary lifting cylinder 14 and a primary lifting nut 9 matched with the primary lifting screw rod 2, and the primary lifting nut 9 and the primary lifting cylinder 14 are detachably connected together;
the secondary lifting assembly is sleeved in the primary lifting cylinder 14 and is provided with a secondary lifting cylinder 13, a secondary lifting screw rod 10 arranged in the secondary lifting cylinder 13 and a secondary lifting nut 12 matched with the secondary lifting screw rod 10, and an accommodating space is formed in the inward concave mode of the input end of the secondary lifting screw rod 10;
the sequence lock assembly 15 is provided with a first self-locking part 15-1 and a second self-locking part 15-2 which is matched with the first self-locking part 15-1, the first self-locking part 15-1 is connected with the output end of the primary lifting screw rod 2, the second self-locking part 15-2 is connected with the input end of the secondary lifting screw rod 10 and is arranged in the accommodating space, and the output end of the primary lifting screw rod 2 extends into the accommodating space and is separated from or connected with the secondary lifting screw rod 10 through the sequence lock assembly 15;
the buffer pin sleeve 5 is arranged outside the output shaft of the driving device in a clamping manner, the buffer pin sleeve 5 extends into the bearing ring 3 through the buffer device, the bearing ring 3 is sleeved at the input end of the primary lifting screw 2, a light hole is formed in the input end of the primary lifting screw 2 and extends into the outer end of the output shaft of the driving device to form a sliding pair, a light hole matched with the lifting screw is formed in the outer end of the output shaft of the driving device, and the sliding pin shaft 25 penetrates through each corresponding light hole to form the sliding pair.
In specific implementation, the buffer device is a compression spring 4, sleeved outside the buffer pin sleeve 5, and a blocking part is arranged on the buffer pin sleeve 5 so that the buffer device acts between the blocking part and the bearing ring 3.
In specific implementation, the primary lifting nut 9 is further sleeved with a needle bearing 6, the needle bearing 6 is sleeved with a primary guide seat 8 in clearance fit with the outer sleeve 1, and the outer side of the primary guide seat 8 is clamped with a primary guide ring 7.
In specific implementation, a primary guiding positioning sleeve 16 is arranged between the outer end of the primary lifting cylinder 14 and the outer end of the outer sleeve 1.
In specific implementation, the secondary lifting nut 12 is in clearance fit with the inner wall of the primary lifting cylinder 14, and the outer end of the secondary lifting nut 12 is clamped and provided with a secondary guide ring 11.
In specific implementation, a secondary guiding and positioning sleeve 17 is arranged between the outer end of the secondary lifting cylinder 13 and the outer end of the primary lifting cylinder 14.
In specific implementation, the first self-locking part 15-1 is detachably arranged at the output end of the primary lifting screw 2, a plurality of grooves 15-4 are formed in the end face of the first self-locking part 15-1 matched with the second self-locking part 15-2, and a plurality of protrusions 15-3 matched with the grooves 15-4 are formed in the end face of the second self-locking part 15-2 matched with the first self-locking part 15-1.
In a specific implementation, the driving device is a speed reducer, and includes:
a reduction gearbox 19;
a driving gear 22 disposed in the reduction gearbox 19;
a driving shaft 24 connected to the driving gear 22;
the servo motor 21 is arranged outside the reduction gearbox 19, and the output end of the servo motor extends into the reduction gearbox 19 and is connected with the driving shaft 24;
a driven gear 20 disposed in the reduction gearbox 19 and meshed with the driving gear 22; and
the driven shaft 18 is connected with the driven gear 20 and extends out of the reduction box 19 to be the output end of the driving device.
In specific implementation, the driving shaft 24 extends out of the reduction gearbox 19 on the opposite side of the servo motor 21, a manual clutch lever 23 is arranged at the extending end, a clutch 26 is sleeved at the matching end of the manual clutch lever 23 and the driving shaft 24, one end of the clutch 26 is meshed with the driving gear 22, a clamping groove matched with a clutch pin 27 is arranged at the other end of the clutch 26, and the clutch pin 27 is arranged on the manual clutch lever 23 and is clamped or separated with the clutch 26 under the action of the manual clutch lever 23.
In specific implementation, a handle 28 is further disposed on the outer end of the manual clutch lever 23.
The working principle of the invention is as follows:
the invention mainly comprises two parts, namely a speed reducer with a manual adjusting device and a spiral lifting assembly with a buffer device.
1. Speed reducer with manual adjusting device
Under normal operation, the clutch 26 is engaged with the driving gear 22, and the driving gear 22 is sleeved on the driving shaft 24. After the motor is started, the power output is completed through the sequence of the servo motor 21, the driving shaft 24, the clutch pin 27, the clutch 26, the driving gear 22, the driven gear 20 and the driven shaft 18.
When the motor or power fails, the manual clutch lever 23 is pulled down and rotated by 90 degrees, so that the clutch pin 27 is clamped in a relatively shallow clamping groove of the clutch 26, and the clutch 26 is disconnected from the driving shaft 24. The manual operation is realized by adopting a special wrench to rotate the clutch 26, and the power transmission route is as follows: the clutch 26, the driving gear 22, the driven gear 20 and the driven shaft 18 complete the power output.
2. Spiral lifting assembly with buffer device
The lifting screw rods and the lifting cylinders of all levels are in a retracted state in the original state of the lifting assembly, and the sequence locks are automatically locked at the moment.
When the lifting component stretches out: the power is transmitted to the buffer pin sleeve 5 of the lifting assembly by the driven shaft 18 of the speed reducer, the buffer pin sleeve 5, the sliding pin shaft 25, the primary lifting screw rod 2, the sequence lock assembly 15, the secondary lifting screw rod 10, the secondary lifting nut 12, the secondary lifting cylinder 13, the primary lifting nut 9, the sequence lock assembly 15 is opened, the primary lifting nut 9, the primary guide seat 8 and the primary lifting cylinder 14 are lifted until the lifting is in place.
The lifting assembly is retracted as the reverse of extension.
The foregoing disclosure is merely illustrative of some embodiments of the invention, but the embodiments are not limited thereto and variations within the scope of the invention will be apparent to those skilled in the art.
Claims (10)
1. The heavy-duty multi-stage spiral lifting device comprises a spiral lifting assembly and a driving device for driving the spiral lifting assembly, and is characterized in that the spiral lifting assembly comprises an outer sleeve (1), and a primary lifting assembly, a secondary lifting assembly and a sequence lock assembly (15) which are arranged in the outer sleeve (1);
the primary lifting assembly is provided with a primary lifting cylinder (14), a primary lifting screw (2) arranged in the primary lifting cylinder (14) and a primary lifting nut (9) matched with the primary lifting screw (2), and the primary lifting nut (9) and the primary lifting cylinder (14) are detachably connected together;
the secondary lifting assembly is sleeved in the primary lifting cylinder (14) and is provided with a secondary lifting cylinder (13), a secondary lifting screw (10) arranged in the secondary lifting cylinder (13) and a secondary lifting nut (12) matched with the secondary lifting screw (10), and the input end of the secondary lifting screw (10) is inwards concave to form an accommodating space;
the sequence lock assembly (15) is provided with a first self-locking part (15-1) and a second self-locking part (15-2) which is matched with the first self-locking part (15-1), the first self-locking part (15-1) is connected with the output end of the primary lifting screw (2), the second self-locking part (15-2) is connected with the input end of the secondary lifting screw (10) and is arranged in the accommodating space, and the output end of the primary lifting screw (2) extends into the accommodating space and is separated from or connected with the secondary lifting screw (10) through the sequence lock assembly (15);
the driving device comprises a driving device, a bearing ring (3) and a sliding pin shaft (25), wherein the outer clamping of the driving device is provided with a buffer pin sleeve (5), the buffer pin sleeve (5) stretches into the bearing ring (3) through the buffer device, the bearing ring (3) is sleeved at the input end of the primary lifting screw (2), the input end of the primary lifting screw (2) is provided with a unthreaded hole and stretches into the outer end of the driving device to form a sliding pair, the outer end of the driving device is provided with unthreaded holes matched with the lifting screw, and the sliding pin shaft (25) penetrates through the corresponding unthreaded holes to form the sliding pair.
2. The heavy-duty multi-stage spiral lifting device of claim 1, wherein: the buffer device is a compression spring (4) which is sleeved outside the buffer pin sleeve (5), and a blocking part is arranged on the buffer pin sleeve (5) so that the buffer device acts between the blocking part and the bearing ring (3).
3. The heavy-duty multi-stage spiral lifting device of claim 1, wherein: the novel lifting device is characterized in that a needle bearing (6) is further sleeved on the primary lifting nut (9), a primary guide seat (8) in clearance fit with the outer sleeve (1) is sleeved outside the needle bearing (6), and a primary guide ring (7) is arranged on the outer side of the primary guide seat (8) in a clamping manner.
4. The heavy-duty multi-stage spiral lifting device of claim 1, wherein: a primary guide positioning sleeve (16) is arranged between the outer end of the primary lifting cylinder (14) and the outer end of the outer sleeve (1).
5. The heavy-duty multi-stage spiral lifting device of claim 1, wherein: the secondary lifting nut (12) is in clearance fit with the inner wall of the primary lifting cylinder (14), and a secondary guide ring (11) is arranged at the outer end of the secondary lifting nut (12) in a clamping manner.
6. The heavy-duty multi-stage spiral lifting device of claim 1, wherein: a secondary guide positioning sleeve (17) is arranged between the outer end of the secondary lifting cylinder (13) and the outer end of the primary lifting cylinder (14).
7. The heavy-duty multi-stage spiral lifting device of claim 1, wherein: the first self-locking part (15-1) is detachably arranged at the output end of the primary lifting screw (2), a plurality of grooves (15-4) are formed in the end face of the first self-locking part (15-1) matched with the second self-locking part (15-2), and a plurality of protrusions (15-3) matched with the grooves (15-4) are formed in the end face of the second self-locking part (15-2) matched with the first self-locking part (15-1).
8. The heavy-duty multi-stage spiral lifting device of claim 1, wherein the driving device is a decelerator, comprising:
a reduction gearbox body (19);
a driving gear (22) arranged in the reduction gearbox body (19);
a driving shaft (24) connected to the driving gear (22);
the servo motor (21) is arranged outside the reduction gearbox body (19), and the output end of the servo motor extends into the reduction gearbox body (19) and is connected with the driving shaft (24);
the driven gear (20) is arranged in the reduction gearbox body (19) and meshed with the driving gear (22); and
the driven shaft (18) is connected with the driven gear (20) and extends out of the reduction box body (19) to serve as an output end of the driving device.
9. The heavy duty multi-stage screw elevator apparatus of claim 8 wherein: the driving shaft (24) stretches out gearbox (19) on the opposite side of the servo motor (21) and is provided with a manual clutch lever (23) at the stretching end, a clutch (26) is sleeved outside the matching end of the manual clutch lever (23) and the driving shaft (24), one end of the clutch (26) is meshed with the driving gear (22), the other end of the clutch (26) is provided with a clamping groove matched with a clutch pin (27), and the clutch pin (27) is arranged on the manual clutch lever (23) and is clamped or separated with the clutch (26) under the action of the manual clutch lever (23).
10. The heavy duty multi-stage spiral elevator apparatus of claim 9, wherein: a handle (28) is further arranged at the outer end part of the manual clutch lever (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811138679.5A CN109081258B (en) | 2018-09-28 | 2018-09-28 | Heavy-duty type multistage spiral lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811138679.5A CN109081258B (en) | 2018-09-28 | 2018-09-28 | Heavy-duty type multistage spiral lifting device |
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| Publication Number | Publication Date |
|---|---|
| CN109081258A CN109081258A (en) | 2018-12-25 |
| CN109081258B true CN109081258B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811138679.5A Active CN109081258B (en) | 2018-09-28 | 2018-09-28 | Heavy-duty type multistage spiral lifting device |
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| CN (1) | CN109081258B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076551B (en) * | 2019-05-30 | 2020-05-08 | 燕山大学 | Hydraulic locking device |
| CN111039221A (en) * | 2019-11-08 | 2020-04-21 | 合肥科大智能机器人技术有限公司 | Light lead screw lifting mechanism |
| CN111755795B (en) * | 2020-07-03 | 2022-10-04 | 石家庄硕华电子科技有限公司 | Vehicle-mounted antenna bracket with multi-stage lifting structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02159404A (en) * | 1988-12-12 | 1990-06-19 | K & M Enterp Kk | Freely expandable support device |
| KR19990026480A (en) * | 1997-09-24 | 1999-04-15 | 이희철 | Telescopic multi-level lifting device |
| CN201530699U (en) * | 2009-09-22 | 2010-07-21 | 重庆华伟工业（集团）有限责任公司 | Screw-type automatic lift equipment |
| CN101817485A (en) * | 2010-03-25 | 2010-09-01 | 中国人民解放军国防科学技术大学 | Large-stroke multistage lifting method and device |
| CN102659056A (en) * | 2012-04-27 | 2012-09-12 | 江苏科技大学 | Heavy-load high-accuracy lifting device with multiple sections capable of freely extending and retracting |
| CN209010050U (en) * | 2018-09-28 | 2019-06-21 | 武汉道森传动科技有限公司 | A kind of heavy-load type multiple coil lifting device |
-
2018
- 2018-09-28 CN CN201811138679.5A patent/CN109081258B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02159404A (en) * | 1988-12-12 | 1990-06-19 | K & M Enterp Kk | Freely expandable support device |
| KR19990026480A (en) * | 1997-09-24 | 1999-04-15 | 이희철 | Telescopic multi-level lifting device |
| CN201530699U (en) * | 2009-09-22 | 2010-07-21 | 重庆华伟工业（集团）有限责任公司 | Screw-type automatic lift equipment |
| CN101817485A (en) * | 2010-03-25 | 2010-09-01 | 中国人民解放军国防科学技术大学 | Large-stroke multistage lifting method and device |
| CN102659056A (en) * | 2012-04-27 | 2012-09-12 | 江苏科技大学 | Heavy-load high-accuracy lifting device with multiple sections capable of freely extending and retracting |
| CN209010050U (en) * | 2018-09-28 | 2019-06-21 | 武汉道森传动科技有限公司 | A kind of heavy-load type multiple coil lifting device |
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| CN109081258A (en) | 2018-12-25 |
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