CN110984839A - Height-adjustable's transport ladder - Google Patents
Height-adjustable's transport ladder Download PDFInfo
- Publication number
- CN110984839A CN110984839A CN201911184028.4A CN201911184028A CN110984839A CN 110984839 A CN110984839 A CN 110984839A CN 201911184028 A CN201911184028 A CN 201911184028A CN 110984839 A CN110984839 A CN 110984839A
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- bottom plate
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- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000036829 Device dislocation Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
- E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
- E06C5/04—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic
- E06C5/16—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic using mechanical transmission only, with or without fluid or other non-mechanical couplings or clutches
- E06C5/20—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic using mechanical transmission only, with or without fluid or other non-mechanical couplings or clutches using hand-power
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
- E06C5/32—Accessories, e.g. brakes on ladders
- E06C5/36—Safety devices against slipping or falling of ladders; Safety devices against overloading ladders
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The invention relates to the technical field of logistics storage, in particular to a height-adjustable carrying ladder, which is used for adjusting the height of the carrying ladder according to transport vehicles of different vehicle types, saving the cost and improving the practicability; the bottom plate, first truckle, two sets of bearing frames, two sets of regulation lead screws, the drive belt, the nut is vice, connecting device, multiunit ladder device, the stopper, four group's second truckles and four group fixing device, four group's first truckles are installed to the bottom symmetry of bottom plate, the top left part of bottom plate is dug and is equipped with the mounting groove, two sets of bearing frames are respectively the bottom of symmetrical installation at the mounting groove, the inside of two sets of bearing frames is provided with the bearing, the bottom of two sets of regulation lead screws is fixed mounting respectively on the bearing inner race of two sets of bearing frames, the top of front end regulation lead screw is provided with the hand wheel, the bottom of two sets of regulation lead screws all is provided with the band pulley, two sets of band pulleys all are located inside.
Description
Technical Field
The invention relates to the technical field of logistics storage, in particular to a height-adjustable carrying ladder.
Background
The Chinese logistics industry starts relatively late, along with the rapid development of national economy of China, the Chinese logistics industry keeps a relatively fast growth speed, a logistics system is continuously perfected, the industry is increasingly mature and standard in operation, and the logistics comprises the following components: links such as transportation, storage, packing, transport loading and unloading, circulation processing, delivery and relevant commodity circulation information of object, the network purchase has become the main shopping mode of national people in our country in recent years, along with the development of network purchase, the requirement to the commodity circulation trade is also higher and higher, often need use the transport ladder in the transportation of commodity circulation, carry article to the transport vechicle through the transport ladder, at first remove the transport ladder to transport vechicle loading and unloading door department in current handling, then by the workman carry article on the transport vechicle through the transport ladder can, current transport ladder finds in the use because the motorcycle type of transport vechicle is different, the bottom in carriage also is different with the height on ground, consequently need to match different transport ladders to the transport vechicles of different motorcycle types, lead to the cost higher, the practicality is relatively poor.
Disclosure of Invention
In order to solve the technical problems, the invention provides the height-adjustable conveying ladder which is capable of adjusting the height of the conveying ladder according to the types of transport vehicles, saving cost and improving practicability.
The invention relates to a height-adjustable carrying ladder, which comprises a bottom plate, first trundles, two groups of bearing seats, two groups of adjusting screw rods, a transmission belt, nut pairs, a connecting device, a plurality of groups of step devices, a limiting block, four groups of second trundles and four groups of fixing devices, wherein the four groups of first trundles are symmetrically arranged at the bottom end of the bottom plate, a mounting groove is dug at the left part of the top end of the bottom plate, the two groups of bearing seats are respectively and symmetrically arranged at the bottom end of the mounting groove, bearings are arranged inside the two groups of bearing seats, the bottom ends of the two groups of adjusting screw rods are respectively and fixedly arranged on bearing inner rings of the two groups of bearing seats, a hand wheel is arranged at the top end of the front adjusting screw rod, belt wheels are arranged at the bottoms of the two groups of adjusting screw rods, the two groups of belt wheels are respectively positioned, the bottom ends of two sets of nut pairs are fixedly connected with the top end of a connecting device, the connecting device can move up and down along an adjusting screw rod along with the nut pairs, the right end of the connecting device is connected with the left end of one set of ladder device, the other sets of ladder devices can be sequentially and movably connected from head to tail, the right end of the rightmost ladder device can be movably connected with the left end of a limiting block from top to bottom, the bottom end of the limiting block is respectively and symmetrically provided with four sets of first supporting legs, the bottom end of each set of first supporting leg is provided with a second truckle, the right part of the top end of a bottom plate is symmetrically dug with two sets of limiting grooves from front to back, the two sets of second truckles at the front side can move from left to right in the limiting groove at the front side, the two sets of second truckles at the rear side can move from left to right in the limiting groove, the connecting grooves used for matching and installing the multiple groups of connecting lugs are dug at the right part of the top end of each step unit, the right end of each connecting groove runs through the right end of each step unit, the multiple groups of step units are matched and connected with the multiple groups of connecting lugs through the multiple groups of connecting lugs, the connecting lugs can move up and down in the connecting grooves, countersunk head threaded holes are formed in the middle of the top ends of the limiting blocks, and four groups of fixing devices are symmetrically installed at the bottom end of the bottom plate.
According to the height-adjustable carrying ladder, each group of fixing devices further comprises a second supporting leg and a screw rod, the top end of the second supporting leg is fixedly welded at the bottom end of the bottom plate, a threaded hole is drilled at the bottom end of the second supporting leg, the top end of the screw rod is inserted into the threaded hole at the bottom end of the second supporting leg in a threaded mode, and a foot pad is arranged at the bottom end of the screw rod.
The height-adjustable carrying ladder further comprises a plurality of groups of end covers, ladder grooves are milled in the top end of each group of connecting grooves, and the plurality of groups of end covers are respectively covered on the plurality of groups of ladder grooves.
The height-adjustable carrying ladder further comprises anti-back nuts, the anti-back nuts are sleeved on the circumferential outer wall of the adjusting screw rod in a threaded mode, the anti-back nuts are located below the connecting device, and the top ends of the anti-back nuts are tightly attached to the bottom end of the connecting device.
According to the height-adjustable carrying ladder, the limiting device is arranged at the top of the adjusting screw rod and is positioned below the hand wheel.
According to the carrying ladder with the adjustable height, the handle is arranged at the top end of the hand wheel.
The height-adjustable carrying ladder further comprises a connecting rod, the right end of the connecting rod is welded in the middle of the left end of the bottom plate, and a traction ring is arranged at the left end of the connecting rod.
According to the height-adjustable carrying ladder, the four groups of foot pads are made of rubber materials.
Compared with the prior art, the invention has the beneficial effects that: connect the monolithic removal to commodity circulation loading and unloading goods door department with bottom plate etc., revolve wrong hand wheel, the nut secondary band moves connecting device rebound, multiunit ladder device becomes the echelonment in proper order and risees when connecting device's left end pulling multiunit ladder device and stopper move left, the top and the carriage bottom department level alignment of connecting device, use countersunk bolt spiral shell dress to insert until countersunk bolt and the tightening of a set of positioning screw hole on bottom plate top in the countersunk screw hole on stopper top, reduce the rigidity of multiunit ladder device and take place the condition that multiunit ladder device moved right in the course of the work, stability is improved, this transport ladder can adjust the height of transport ladder according to different motorcycle types, and the practicality is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is an enlarged schematic view of section A of FIG. 1;
FIG. 4 is a schematic structural diagram of the connection of two sets of ladder units;
FIG. 5 is a schematic structural view of an end cap;
FIG. 6 is a schematic view of the structure of the fixture;
in the drawings, the reference numbers: 1. a base plate; 2. a first caster; 3. mounting grooves; 4. a bearing seat; 5. adjusting the lead screw; 6. a hand wheel; 7. a pulley; 8. a transmission belt; 9. a nut pair; 10. a connecting device; 11. a stair device; 12. a limiting groove; 13. a limiting block; 14. a first support leg; 15. a second caster; 16. positioning the threaded hole; 17. countersunk threaded holes; 18. a stair unit; 19. a connection bump; 20. a connecting groove; 21. a fixing device; 22. a second support leg; 23. a screw; 24. a foot pad; 25. a ladder groove; 26. an end cap; 27. a back-off prevention nut; 28. a limiting device; 29. a handle; 30. a connecting rod; 31. a traction ring.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 to 6, the height-adjustable carrying ladder of the present invention comprises a bottom plate 1, first casters 2, two sets of bearing seats 4, two sets of adjusting screws 5, a transmission belt 8, a nut pair 9, a connecting device 10, a plurality of sets of ladder devices 11, a limiting block 13, four sets of second casters 15, and four sets of fixing devices 21, wherein four sets of first casters 2 are symmetrically installed at the bottom end of the bottom plate 1, a mounting groove 3 is dug at the left portion of the top end of the bottom plate 1, two sets of bearing seats 4 are respectively and symmetrically installed at the bottom end of the mounting groove 3, bearings are arranged inside the two sets of bearing seats 4, the bottom ends of two sets of adjusting screws 5 are respectively and fixedly installed on bearing inner rings of the two sets of bearing seats 4, a hand wheel 6 is arranged at the top end of a front end adjusting screw 5, belt wheels 7 are arranged at the bottom portions of the two sets of adjusting, two sets of nut pairs 9 are respectively sleeved on two sets of adjusting screw rods 5 in a screw mode, a connecting device 10 is sleeved on the circumferential outer wall of the two sets of adjusting screw rods 5, the bottom ends of the two sets of nut pairs 9 are fixedly connected with the top ends of the connecting device 10, the connecting device 10 can move up and down along the adjusting screw rods 5 along with the nut pairs 9, the right end of the connecting device 10 is connected with the left end of one set of ladder devices 11, the other sets of ladder devices 11 can be sequentially and movably connected end to end up and down, the right end of the rightmost ladder device 11 can be movably connected with the left end of a limiting block 13 up and down, the bottom end of the limiting block 13 is respectively and symmetrically provided with four sets of first supporting legs 14, the bottom end of each set of first supporting legs 14 is provided with second truckles 15, two sets of limiting grooves 12 are symmetrically dug in the front and back of the right part of the top end of the bottom plate 1, the two sets of second truc, the middle part of the top end of the bottom plate 1 is transversely provided with a plurality of groups of positioning threaded holes 16, each group of ladder devices 11 further comprises a ladder unit 18, the left end of the ladder unit 18 is longitudinally provided with a plurality of groups of connecting lugs 19, the right part of the top end of the ladder unit 18 is dug with a plurality of groups of connecting grooves 20 matched and installed with the connecting lugs 19, the right end of each group of connecting grooves 20 penetrates through the right end of the ladder unit 18, the plurality of groups of ladder units 18 are matched and connected with the plurality of groups of connecting grooves 20 sequentially through the plurality of groups of connecting lugs 19, the connecting lugs 19 can move up and down in the connecting grooves 20, the middle part of the top end of the limiting block 13; the carrying ladder is characterized in that a bottom plate 1 and the like are connected and integrally moved to a logistics loading and unloading goods vehicle door, a hand wheel 6 is screwed, a nut pair 9 drives a connecting device 10 to move upwards, the left end of the connecting device 10 pulls a plurality of groups of ladder devices 11 and a limiting block 13 to move leftwards, the plurality of groups of ladder devices 11 sequentially rise in a ladder shape until the top end of the connecting device 10 is horizontally aligned with the bottom end of a carriage, a countersunk head bolt is inserted into a countersunk head threaded hole 17 in the top end of the limiting block 13 until the countersunk head bolt is screwed up with a group of positioning threaded holes 16 in the top end of the bottom plate 1, the position fixing of the plurality of groups of ladder devices 11 is reduced, the condition that the plurality of groups of ladder devices 11 move rightwards in the working process is achieved, the stability is.
According to the height-adjustable carrying ladder, each group of fixing devices 21 further comprises a second supporting leg 22 and a screw rod 23, the top end of the second supporting leg 22 is fixedly welded at the bottom end of the bottom plate 1, a threaded hole is drilled at the bottom end of the second supporting leg 22, the top end of the screw rod 23 is inserted into the threaded hole at the bottom end of the second supporting leg 22 in a threaded manner, and a foot pad 24 is arranged at the bottom end of the screw rod 23; by screwing the screw 23 to the bottom end of the foot pad 24 to be contacted with the ground, the situation that the whole connecting body of the bottom plate 1 and the four groups of first trundles 2 and the like moves in the working process is reduced, and the stability is improved.
The height-adjustable carrying ladder further comprises a plurality of groups of end covers 26, ladder grooves 25 are milled at the top end of each group of connecting grooves 20, and the plurality of groups of end covers 26 are respectively covered on the plurality of groups of ladder grooves 25; by covering the top end of the connecting groove 20 with the end cover 26, the situation that the uneven top end of the step unit 18 caused by multiple groups of connecting grooves 20 is caused to cause tripping of a user in the working process is reduced, and the stability is improved.
The height-adjustable carrying ladder further comprises an anti-back nut 27, the anti-back nut 27 is sleeved on the circumferential outer wall of the adjusting screw rod 5 in a threaded mode, the anti-back nut 27 is located below the connecting device 10, and the top end of the anti-back nut 27 is tightly attached to the bottom end of the connecting device 10; by screwing the anti-back nut 27 until the top end of the anti-back nut 27 is tightly attached to the bottom end of the connecting device 10, the situation that the nut pair 9 and the connecting device 10 are connected integrally and move relative to the adjusting screw 5 in the working process is reduced, and the stability is improved.
According to the height-adjustable carrying ladder, the limiting device 28 is arranged at the top of the adjusting screw 5, and the limiting device 28 is positioned below the hand wheel 6; by arranging the limiting device 28, the situation that the nut pair 9 is overtravel and collides with the hand wheel 6 in the process of screwing the hand wheel 6 is reduced, and the safety is improved.
The invention relates to a height-adjustable carrying ladder, wherein a handle 29 is arranged at the top end of a hand wheel 6; the handle 29 is arranged at the top end of the hand wheel 6, so that a user can conveniently screw the hand wheel 6, and convenience is improved.
The height-adjustable carrying ladder further comprises a connecting rod 30, the right end of the connecting rod 30 is welded in the middle of the left end of the bottom plate 1, and a traction ring 31 is arranged at the left end of the connecting rod 30; through the left end welding connecting rod 30 at bottom plate 1, convenience of customers draws and draws bottom plate 1 etc. and connect wholly, improves the convenience.
According to the height-adjustable carrying ladder, the four groups of foot pads 24 are made of rubber materials; the friction force between the four groups of foot pads 24 and the ground is increased by adopting the rubber material, so that the stability is improved.
The invention relates to a height-adjustable carrying ladder, which is characterized in that during operation, a bottom plate 1 and the like are integrally connected and moved to a logistics loading and unloading goods vehicle door, a screw rod 23 is screwed until the bottom end of a foot pad 24 is contacted with the ground, then a handle 29 is screwed, a nut pair 9 drives a connecting device 10 to move upwards, the left end of the connecting device 10 pulls a plurality of groups of ladder devices 11 and a limiting block 13 to move leftwards, the plurality of groups of ladder devices 11 are sequentially lifted in a ladder shape until the top end of the connecting device 10 is horizontally aligned with the bottom end of a carriage, an anti-back nut 27 is screwed until the top end of the anti-back nut 27 is attached to the bottom end of the connecting device 10, and then a countersunk head bolt is screwed into a countersunk head threaded hole 17 at the top end of the limiting block 13 until the countersunk head bolt is screwed.
According to the height-adjustable carrying ladder, the installation mode, the connection mode or the arrangement mode are common mechanical modes, and the carrying ladder can be implemented as long as the beneficial effects of the carrying ladder are achieved; the bearing of the carrying ladder with the adjustable height is purchased from the market, and technicians in the industry only need to install and operate the bearing according to the attached operating instructions.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A height-adjustable carrying ladder is characterized by comprising a bottom plate (1), first trundles (2), two groups of bearing seats (4), two groups of adjusting screw rods (5), a transmission belt (8), a nut pair (9), a connecting device (10), a plurality of groups of ladder devices (11), a limiting block (13), four groups of second trundles (15) and four groups of fixing devices (21), wherein the four groups of first trundles (2) are symmetrically installed at the bottom end of the bottom plate (1), a mounting groove (3) is dug at the left part of the top end of the bottom plate (1), the two groups of bearing seats (4) are respectively and symmetrically installed at the bottom end of the mounting groove (3), bearings are arranged inside the two groups of bearing seats (4), the bottom ends of the two groups of adjusting screw rods (5) are respectively and fixedly installed on bearing inner rings of the two groups of bearing seats (4), a hand wheel (6) is arranged at the top end of the, two groups of belt wheels (7) are positioned in the mounting groove (3), a driving belt (8) is sleeved and tensioned on the circumferential outer wall of the two groups of belt wheels (7), two groups of nut pairs (9) are respectively sleeved on two groups of adjusting screw rods (5) in a screw mode, a connecting device (10) is sleeved on the circumferential outer wall of the two groups of adjusting screw rods (5), the bottom ends of the two groups of nut pairs (9) are fixedly connected with the top end of the connecting device (10), the connecting device (10) can move up and down along the adjusting screw rods (5) along with the nut pairs (9), the right end of the connecting device (10) is connected with the left end of one group of ladder devices (11), the rest groups of ladder devices (11) can be sequentially movably connected from head to tail up and down, the right end of the rightmost ladder device (11) can be movably connected with the left end of a limiting block (13) up and down, the bottom end of the limiting block (, the bottom end of each group of first supporting legs (14) is provided with a second caster (15), the top right part of the bottom plate (1) is symmetrically dug with two groups of limiting grooves (12) front and back, the front two groups of second casters (15) can move left and right in the front limiting grooves (12), the rear two groups of second casters (15) can move left and right in the rear limiting grooves (12), the middle part of the top end of the bottom plate (1) is transversely provided with a plurality of groups of positioning threaded holes (16), each group of ladder device (11) also comprises a ladder unit (18), the left end of the ladder unit (18) is longitudinally provided with a plurality of groups of connecting lugs (19), the top right part of the ladder unit (18) is dug with a plurality of groups of connecting grooves (20) matched and installed with the connecting lugs (19), the right end of each group of connecting groove (20) runs through the right end of the ladder unit (18), the plurality of groups of ladder units (18) are matched and connected with the plurality of groups, the connecting convex block (19) can move up and down in the connecting groove (20), the middle of the top end of the limiting block (13) is provided with a countersunk threaded hole (17), and four groups of fixing devices (21) are symmetrically arranged at the bottom end of the bottom plate (1).
2. The height-adjustable carrying ladder as claimed in claim 1, wherein each set of fixing devices (21) further comprises a second supporting leg (22) and a screw rod (23), the top end of the second supporting leg (22) is fixedly welded at the bottom end of the bottom plate (1), the bottom end of the second supporting leg (22) is drilled with a threaded hole, the top end of the screw rod (23) is inserted into the threaded hole at the bottom end of the second supporting leg (22) in a threaded manner, and the bottom end of the screw rod (23) is provided with a foot pad (24).
3. A height-adjustable carrying ladder as claimed in claim 2, further comprising a plurality of sets of end caps (26), wherein the top end of each set of connecting grooves (20) is milled with ladder grooves (25), and the plurality of sets of end caps (26) are respectively covered on the plurality of sets of ladder grooves (25).
4. The height-adjustable carrying ladder as claimed in claim 3, further comprising a back-proof nut (27), wherein the back-proof nut (27) is screwed on the outer circumferential wall of the adjusting screw (5), the back-proof nut (27) is positioned below the connecting device (10), and the top end of the back-proof nut (27) is tightly attached to the bottom end of the connecting device (10).
5. A height adjustable carrying ladder as claimed in claim 4, characterized in that the top of the adjusting screw (5) is provided with a stop device (28), the stop device (28) being located below the hand wheel (6).
6. A height adjustable carrying ladder as claimed in claim 5, characterized in that the top end of the hand wheel (6) is provided with a handle (29).
7. The height-adjustable carrying ladder as claimed in claim 6, further comprising a connecting rod (30), wherein the right end of the connecting rod (30) is welded to the middle of the left end of the bottom plate (1), and the left end of the connecting rod (30) is provided with a traction ring (31).
8. A height adjustable carrying ladder as claimed in claim 7, characterised in that the four sets of feet (24) are of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911184028.4A CN110984839B (en) | 2019-11-27 | 2019-11-27 | Height-adjustable's transport ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911184028.4A CN110984839B (en) | 2019-11-27 | 2019-11-27 | Height-adjustable's transport ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110984839A true CN110984839A (en) | 2020-04-10 |
| CN110984839B CN110984839B (en) | 2021-09-14 |
Family
ID=70087482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911184028.4A Active CN110984839B (en) | 2019-11-27 | 2019-11-27 | Height-adjustable's transport ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110984839B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050269159A1 (en) * | 2004-06-07 | 2005-12-08 | Lin Cho S | Telescopic stepladder |
| JP2010115758A (en) * | 2008-11-14 | 2010-05-27 | Nk Engineering Kk | Portable workbench device |
| US9409587B1 (en) * | 2013-05-15 | 2016-08-09 | Henry Sampiano D'Sanson | 3 in 1 ladder, dolly, and seating systems |
| CN206957268U (en) * | 2017-04-26 | 2018-02-02 | 民族建设集团有限公司 | Steel ladder above and below a kind of adjustable construction of pedal angle |
| CN108756718A (en) * | 2018-05-21 | 2018-11-06 | 温州霞光建设有限公司 | A kind of construction and decoration ramp |
| CN208734266U (en) * | 2018-07-12 | 2019-04-12 | 广州市惠鑫网络科技有限公司 | A kind of efficient electric appliance maintenance rig |
-
2019
- 2019-11-27 CN CN201911184028.4A patent/CN110984839B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050269159A1 (en) * | 2004-06-07 | 2005-12-08 | Lin Cho S | Telescopic stepladder |
| JP2010115758A (en) * | 2008-11-14 | 2010-05-27 | Nk Engineering Kk | Portable workbench device |
| US9409587B1 (en) * | 2013-05-15 | 2016-08-09 | Henry Sampiano D'Sanson | 3 in 1 ladder, dolly, and seating systems |
| CN206957268U (en) * | 2017-04-26 | 2018-02-02 | 民族建设集团有限公司 | Steel ladder above and below a kind of adjustable construction of pedal angle |
| CN108756718A (en) * | 2018-05-21 | 2018-11-06 | 温州霞光建设有限公司 | A kind of construction and decoration ramp |
| CN208734266U (en) * | 2018-07-12 | 2019-04-12 | 广州市惠鑫网络科技有限公司 | A kind of efficient electric appliance maintenance rig |
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| Publication number | Publication date |
|---|---|
| CN110984839B (en) | 2021-09-14 |
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Effective date of registration: 20210820 Address after: 224000 3-A-4 Jiangsu Yancheng City high tech Industrial Development Zone small and Medium Enterprise Park (D) Applicant after: YANCHENG GUORUIXIN TECHNOLOGY Co.,Ltd. Address before: 224000 Room 301, IOT building, Yandu Road North, Yandu District, Yancheng City, Jiangsu Province Applicant before: Yancheng Service Industry Zone Investment Co.,Ltd. |
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Application publication date: 20200410 Assignee: Jiangsu yepai Biotechnology Co.,Ltd. Assignor: YANCHENG GUORUIXIN TECHNOLOGY Co.,Ltd. Contract record no.: X2023980051048 Denomination of invention: A height adjustable handling ladder Granted publication date: 20210914 License type: Common License Record date: 20231209 |
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Application publication date: 20200410 Assignee: Qianxiao Wanqi (Yancheng) Technology Co.,Ltd. Assignor: YANCHENG GUORUIXIN TECHNOLOGY Co.,Ltd. Contract record no.: X2023980052085 Denomination of invention: A height adjustable handling ladder Granted publication date: 20210914 License type: Common License Record date: 20231214 |
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Application publication date: 20200410 Assignee: Huaruizhong High tech Achievement Transformation (Yancheng) Co.,Ltd. Assignor: YANCHENG GUORUIXIN TECHNOLOGY Co.,Ltd. Contract record no.: X2023980053401 Denomination of invention: A height adjustable handling ladder Granted publication date: 20210914 License type: Common License Record date: 20231222 |