CN111319669B - Building site handling device based on supplementary climbing stair of elasticity - Google Patents
Building site handling device based on supplementary climbing stair of elasticity Download PDFInfo
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- CN111319669B CN111319669B CN202010199111.5A CN202010199111A CN111319669B CN 111319669 B CN111319669 B CN 111319669B CN 202010199111 A CN202010199111 A CN 202010199111A CN 111319669 B CN111319669 B CN 111319669B
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- 230000009194 climbing Effects 0.000 title claims abstract description 53
- 238000001125 extrusion Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000008828 contractile function Effects 0.000 abstract description 2
- 238000005381 potential energy Methods 0.000 description 17
- 230000006870 function Effects 0.000 description 10
- 239000010985 leather Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/02—Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs
- B62B5/023—Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs using an upwards pushing device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/02—Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs
- B62B5/026—Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs with spiders or adapted wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/04—Braking mechanisms; Locking devices against movement
- B62B5/0438—Braking mechanisms; Locking devices against movement hand operated
- B62B5/0447—Braking mechanisms; Locking devices against movement hand operated using elements cooperating with a handle bar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/04—Braking mechanisms; Locking devices against movement
- B62B2005/0471—Disk brakes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
- Handcart (AREA)
Abstract
The invention relates to the technical field of buildings and discloses a building site carrying device for climbing stairs with the assistance of elasticity. This building site handling device based on supplementary climbing stair of elasticity, when needs shrink, step on the switch through touching the foot with the foot to drive the foot and step on the switch and extrude the gag lever post left, thereby drive the gag lever post and resume to the primary importance, accomplish the contractile function to the spring frame, when climbing the building, need apply the pull force that makes progress to the pull plate, thereby drive the tripod and climb building wheel and stair contact, climb the ladder, save workman's physical power.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a building site carrying device for climbing stairs based on elasticity assistance.
Background
In the building site, when carrying some scattered, hand-carried goods that can consign, use the shallow as appurtenance usually, not only laborsaving, it is also convenient to use, when the flat ground push-and-pull car, the wheel can bear the gravity of goods, the people only need forward use the pulling force can, save time and laborsaving, but when going upstairs, the people will bear the weight of goods and upwards stimulate the shallow and climb the building, considerable difficultly.
Present climbing the building shallow on the market is many, there are the rotatory trailer of tricycle, four-wheel (cross) wheel shallow, steamboat area bull wheel shallow etc, but need the user to use great power to lift up the shallow just can go up a step when the transportation, when the step is gone up and down to needs, need give up force again, can't do benefit to the gravitational potential energy of shallow step and go up the step process next time, it is more hard during the use, and do not have brake function at the stair in-process down, lead to the too fast workman of stair speed down easily and can't grasp the handlebar hand, there is certain potential safety hazard.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a building site carrying device for climbing stairs in an elastic assisting mode, which has the advantages that the three-foot stair climbing wheel is used for saving physical force, the bounce frame and the rubber pad are used for converting gravitational potential energy into elastic potential energy, the force is stored for climbing the next stair, the stretching and the releasing are convenient, the braking is convenient, and the problems that the existing cart is labor-consuming in climbing the stairs and does not have the braking function when going down the stairs are solved.
(II) technical scheme
In order to realize the purposes that the carrying device saves physical power by using a three-foot stair climbing wheel, converts gravitational potential energy into elastic potential energy by using a bouncing frame and a rubber pad, stores the force for climbing a next stair, is convenient to retract and brake, the invention provides the following technical scheme: the utility model provides a building site handling device based on supplementary climbing stair of elasticity, includes puts the thing platform, put the positive fixedly connected with baffle of thing platform, the rear side rotation of putting thing platform bottom is connected with the gyro wheel, the positive downside fixed mounting of baffle has constriction device, constriction device's inside swing joint has the spring frame, the bottom of baffle is rotated and is connected with the pivot, the outer wall of pivot is provided with the link, the tip of pivot is provided with the dog, the inside of link rotates and is connected with the tripod and climbs the building wheel, the outer wall joint that the pivot is close to the one end of baffle has the brake block, the outer wall of brake block is provided with the extrusion stem, the top fixedly connected with connecting rod of baffle, the top fixedly connected with arm-tie of connecting rod, the lower surface of arm-tie is provided with the brake pressure.
Preferably, the bottom of the tripod stair climbing wheel and the bottom of gyro wheel are in same horizontal plane, climb the stair wheel and the gyro wheel is in same horizontal plane through setting up the tripod, can guarantee that the shallow is normally traveling on the level land, when climbing stair, only need climb the slope of stair wheel direction to the tripod, upwards the pulling can climb the building, and the operation is more convenient.
Preferably, the constriction device includes the casing, the bouncing frame is at the inside sliding connection of casing, the spacing hole of second has been seted up to the right side wall upside of casing, first spacing hole has been seted up to the right side wall downside of casing, the right side in first spacing hole is provided with the foot and steps on the switch, the right side wall of bouncing frame has the gag lever post to the spacing hole position swing joint of second, when needs use the bouncing frame, thereby drives bouncing frame downstream through stepping on the elasticity rubber pad downwards with the foot to drive the gag lever post and remove to first spacing hole from the spacing downthehole portion of second, the gag lever post produces the locking this moment, when needs shrink, through touching the foot with the foot and stepping on the switch, thereby drive the foot and step on the gag lever post left extrusion gag lever post, thereby drive the gag lever post and resume to original position, accomplish the shrink function to bouncing frame.
Preferably, the bottom fixedly connected with elasticity rubber pad of spring frame, the spring frame is the elastic steel material, through the spring frame that sets up the elastic steel material, when climbing the building, need exert the pulling force that makes progress to the shallow, after climbing a section ladder, the spring frame can withstand the ladder upper surface this moment, because dolly gravitational potential energy extrudees the spring frame downwards to extrude the elasticity rubber pad, the elasticity rubber pad and the spring frame can cause the counterforce this moment, therefore upwards bounce, through using the bat leather ball principle, just upspring is patted, can exert less upward pulling force to the pulling plate this moment, just can mention a step with the shallow in the same place.
Preferably, the top of brake preforming is provided with the connecting plate, be provided with the spring between connecting plate and the brake preforming, the bottom of connecting plate and the inside that is located the connecting rod are provided with wire rope, and its end connection has the slide, the tip and the stripper bar of slide rotate to be connected, when the stair need carry out the braking function down, through upwards pressing the brake preforming with the hand to drive connecting plate rebound, thereby compression spring, thereby drive wire rope rebound, thereby drive the slide and move left, thereby drive the stripper bar and move to the pivot direction, thereby drive the brake block and hug closely the pivot, thereby accomplish the brake, it is too fast to prevent when the stair down, improve the safety in utilization performance.
Preferably, the outer wall of brake preforming and handle all is provided with anti-skidding line, can guarantee through setting up anti-skidding line that brake preforming and handle can not follow the slippage and fall in the hand, improve the security performance.
(III) advantageous effects
Compared with the prior art, the invention provides a construction site carrying device based on the elastic force auxiliary stair climbing, which has the following beneficial effects:
1. the building site carrying device capable of climbing stairs with the assistance of elasticity can ensure that a cart can normally run on the flat ground by arranging the three-foot stair climbing wheels and the rollers above the object placing table, can climb the stairs only by inclining towards the three-foot stair climbing wheels and pulling upwards when climbing the stairs, is convenient to operate, and when needing to use the bouncing frame, the bouncing frame is driven to move downwards by stepping on the elastic rubber pad downwards by feet so as to drive the limiting rod to move to the first limiting hole from the inside of the second limiting hole, the limiting rod is locked at the moment, when needing to be contracted, the foot-operated switch is touched by feet so as to drive the foot-operated switch to extrude the limiting rod leftwards, so that the limiting rod is driven to restore to the original position, the contraction function of the bouncing frame is completed, when climbing the stairs, upward pulling force needs to be applied to the pulling plate, thereby drive the tripod and climb the stair wheel and contact with the stair, climb the ladder, save workman's physical power.
2. This building site handling device based on supplementary climbing stair of elasticity, after climbing a section of ladder, the ladder upper surface can be withstood to the spring frame this moment, because dolly gravitational potential energy pushes the spring frame downwards, thereby extrude the elasticity rubber pad, elasticity rubber pad and spring frame can cause the counterforce this moment, therefore upwards bounce, through using clapping the leather ball principle, a bat is just upspring, at this moment can apply less upward pulling force to the pulling plate, just can mention last step with the shallow as soon as taking advantage of the situation, thereby turn into elastic potential energy with gravitational potential energy, provide power for climbing stair next time, workman's physical power has been saved.
3. This building site handling device based on supplementary climbing stair of elasticity, when the stair need carry out brake function down, through upwards pressing the brake preforming with the hand, thereby drive the connecting plate rebound, thereby compression spring, thereby drive wire rope rebound, thereby drive the slide and remove left, thereby drive the stripper bar and remove to the pivot direction, thereby it hugs closely the pivot to drive the brake preforming, thereby accomplish the brake, it is too fast to prevent when the stair is down, improve the safety in utilization performance, can guarantee through setting up anti-skidding line that brake preforming and handle can not follow the slippage and fall in hand, and the safety performance is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the structure A of the present invention;
FIG. 3 is a schematic view of a brake pad of the present invention;
FIG. 4 is an enlarged view of the structure B of the present invention;
FIG. 5 is a schematic view of a retractor according to the present invention;
FIG. 6 is a schematic view of the retractor of the present invention in use.
In the figure: 1. a roller; 2. a placing table; 3. a baffle plate; 4. braking and pressing the sheet; 5. pulling a plate; 6. a connecting rod; 7. a retractor; 8. a bounce frame; 9. a rotating shaft; 10. a brake pad; 11. a stopper; 12. an extrusion stem; 13. three-foot stair climbing wheel; 14. a connecting frame; 15. a spring; 16. a connecting plate; 17. a wire rope; 18. a slide plate; 19. an elastic rubber pad; 20. a foot switch; 21. a first limit hole; 22. a second limiting hole; 23. a housing; 24. a limiting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, a building site carrying device for climbing stairs with the assistance of elastic force comprises a platform 2, a baffle 3 is fixedly connected to the front of the platform 2, a roller 1 is rotatably connected to the rear side of the bottom of the platform 2, a contracting device 7 is fixedly installed on the lower side of the front of the baffle 3, a bouncing frame 8 is movably connected to the inside of the contracting device 7, when the bouncing frame 8 needs to be used, the elastic rubber pad 19 is stepped down by a foot to drive the bouncing frame 8 to move downwards, so that a limiting rod 24 is driven to move from the inside of a second limiting hole 24 to a first limiting hole 21, the limiting rod 24 is locked at the moment, when the bouncing frame 8 needs to be used, the foot is used to touch a foot switch 20, so that the foot switch 20 is driven to squeeze the limiting rod 24 leftwards, so that the limiting rod 24 is driven to return to the original position, the contracting function of the bouncing frame 8 is completed, an upward pulling force is required to be applied to the cart, after the cart climbs a section of ladder, the bouncing frame 8 can prop against the upper surface of the ladder, the bouncing frame 8 is downwards extruded by the gravitational potential energy of the cart so as to extrude the elastic rubber pad 19, the elastic rubber pad 19 and the bouncing frame 8 can cause a reverse force so as to bounce upwards, the bouncing frame can bounce upwards by one beat by using a leather ball beating principle, a small upward pulling force can be applied to the pulling plate 5 at the moment, the cart can be lifted to the previous step by lifting in a proper manner, the bottom of the baffle plate 3 is rotatably connected with the rotating shaft 9, the outer wall of the rotating shaft 9 is provided with the connecting frame 14, the end part of the rotating shaft 9 is provided with the stop dog 11, the inside of the connecting frame 14 is rotatably connected with the three-foot stair climbing wheel 13, the bottom of the three-foot stair climbing wheel 13 and the bottom of the roller 1 are positioned at the same horizontal plane, and the cart can be ensured to normally, when climbing stairs, only need to incline towards the direction of the three-foot stair climbing wheel 13 and pull upwards to climb the stairs, the operation is convenient, the brake pad 10 is clamped on the outer wall of one end of the rotating shaft 9 close to the baffle 3, the extrusion rod 12 is arranged on the outer wall of the brake pad 10, when the stair needs to be braked, the brake pad 4 is pressed upwards by hands, so that the connecting plate 16 is driven to move upwards, the spring 15 is compressed, the steel wire rope 17 is driven to move upwards, the sliding plate 18 is driven to move leftwards, the extrusion rod 12 is driven to move towards the rotating shaft 9, so that the brake pad 10 is driven to cling to the rotating shaft 9, the brake is finished, the speed is prevented from being too high when the stair is descended, the use safety performance is improved, the contraction device 7 comprises a shell 23, the bounce frame 8 is connected in the shell 23 in a sliding manner, the second limit hole 22 is formed on the upper side of the right side wall of, a foot switch 20 is arranged on the right side of the first limit hole 21, a limit rod 24 is movably connected on the right side wall of the bounce frame 8 relative to the position of the second limit hole 22, an elastic rubber pad 19 is fixedly connected at the bottom of the bounce frame 8, the bounce frame 8 is made of elastic steel, a connecting rod 6 is fixedly connected at the top of the baffle 3, a pull plate 5 is fixedly connected at the top of the connecting rod 6, a brake pad 4 is arranged on the lower surface of the pull plate 5, a connecting plate 16 is arranged at the top of the brake pad 4, a spring 15 is arranged between the connecting plate 16 and the brake pad 4, a steel wire rope 17 is arranged at the bottom of the connecting plate 16 and inside the connecting rod 6, the end part of the connecting plate is connected with a sliding plate 18, the end part of the sliding plate 18 is rotatably connected with the extrusion rod 12, anti-slip lines are arranged on the outer walls of the brake pad, the safety performance is improved.
The working principle is as follows:
when the trolley is used for going upstairs in a building site, a worker needs to use larger force to lift the trolley upwards to go upstairs, when the trolley needs to go upstairs and downstairs, force needs to be exerted again, the gravitational potential energy of the upstairs of the trolley cannot be used for facilitating the next upstairs going process, and the use is more labor-consuming, when the trolley is used, goods to be transported are arranged above the object placing table 2, the three-foot stair climbing wheel 13 and the roller 1 are arranged on the same horizontal plane, the trolley can be ensured to normally run on the flat ground, when climbing stairs, the trolley only needs to incline towards the direction of the three-foot stair climbing wheel 13, the trolley can climb the stairs by pulling upwards, the operation is more convenient, when the bounce frame 8 needs to be used, the bounce rubber pad 19 is stepped downwards by feet to drive the bounce frame 8 to move downwards, so that the limiting rod 24 is driven to move from the inside of the second limiting hole 24 to the first limiting hole 21, and, when needs shrink, step on switch 20 through touching the foot with the foot to drive foot and step on switch 20 and extrude gag lever post 24 left, thereby drive gag lever post 24 and resume to the primary importance, accomplish the contractile function to spring frame 8, when climbing the building, need exert upward pulling force to arm-tie 5, thereby drive the tripod and climb building wheel 13 and stair contact, climb the ladder, save workman's physical power.
After climbing a section of ladder, this moment bounce frame 8 can withstand the ladder upper surface, because dolly gravitational potential energy extrudees bounce frame 8 downwards to extrude elasticity rubber pad 19, elasticity rubber pad 19 and bounce frame 8 can cause the counter force this moment, therefore upspring, through using clapping the leather ball principle, the bat is just upspring, can exert less upward pulling force to arm-tie 5 at this moment, just can mention last step with the shallow as carrying in the same place, thereby convert gravitational potential energy into elastic potential energy, provide power for climbing the stair next time, saved workman's physical power.
When need carry out braking function down stairs, through upwards pressing brake preforming 4 with the hand, thereby drive connecting plate 16 rebound, thereby compression spring 15, thereby drive wire rope 17 rebound, thereby drive slide 18 and remove left, thereby drive the movement of squeeze bar 12 to pivot 9 direction, thereby drive brake block 10 and hug closely pivot 9, thereby accomplish the brake, it is too fast when preventing down stairs, improve the safety in utilization performance, can guarantee through setting up anti-skidding line that brake preforming 4 and handle 3 can not follow the hand and drop, improve the security performance.
To sum up, when the building site carrying device based on the elastic force assisted stair climbing is used, goods to be transported are arranged above the object placing table 2, the three-foot stair climbing wheel 13 and the roller 1 are arranged on the same horizontal plane, the cart can be guaranteed to normally run on the flat ground, when climbing stairs, the cart can climb stairs only by inclining towards the three-foot stair climbing wheel 13 and pulling upwards, the operation is convenient, when the bouncing frame 8 needs to be used, the elastic rubber pad 19 is stepped downwards by feet to drive the bouncing frame 8 to move downwards, so that the limiting rod 24 is driven to move from the inside of the second limiting hole 24 to the first limiting hole 21, the limiting rod 24 is locked, when the bouncing frame 8 needs to be contracted, the feet touch the foot switch 20 to drive the foot switch 20 to extrude the limiting rod 24 leftwards, so that the limiting rod 24 is driven to recover to the original position, and the contraction function of the bouncing frame 8 is completed, when climbing the building, need apply upward pulling force to arm-tie 5 to drive the tripod and climb building wheel 13 and stair contact, climb the ladder, save workman's physical power.
After climbing a section of ladder, this moment bounce frame 8 can withstand the ladder upper surface, because dolly gravitational potential energy extrudees bounce frame 8 downwards to extrude elasticity rubber pad 19, elasticity rubber pad 19 and bounce frame 8 can cause the counter force this moment, therefore upspring, through using clapping the leather ball principle, the bat is just upspring, can exert less upward pulling force to arm-tie 5 at this moment, just can mention last step with the shallow as carrying in the same place, thereby convert gravitational potential energy into elastic potential energy, provide power for climbing the stair next time, saved workman's physical power.
When need carry out braking function down stairs, through upwards pressing brake preforming 4 with the hand, thereby drive connecting plate 16 rebound, thereby compression spring 15, thereby drive wire rope 17 rebound, thereby drive slide 18 and remove left, thereby drive the movement of squeeze bar 12 to pivot 9 direction, thereby drive brake block 10 and hug closely pivot 9, thereby accomplish the brake, it is too fast when preventing down stairs, improve the safety in utilization performance, can guarantee through setting up anti-skidding line that brake preforming 4 and handle 3 can not follow the hand and drop, improve the security performance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a building site handling device based on supplementary climbing stair of elasticity, includes puts thing platform (2), its characterized in that, put the positive fixedly connected with baffle (3) of thing platform (2), the rear side rotation of putting thing platform (2) bottom is connected with gyro wheel (1), the positive downside fixed mounting of baffle (3) has constriction device (7), the inside swing joint of constriction device (7) has spring frame (8), the bottom rotation of baffle (3) is connected with pivot (9), the outer wall of pivot (9) is provided with link (14), the tip of pivot (9) is provided with dog (11), the inside rotation of link (14) is connected with three-legged stair climbing wheel (13), the outer wall joint that pivot (9) is close to the one end of baffle (3) has brake block (10), the outer wall of brake block (10) is provided with extrusion stem (12), the top of the baffle (3) is fixedly connected with a connecting rod (6), the top of the connecting rod (6) is fixedly connected with a pulling plate (5), and the lower surface of the pulling plate (5) is provided with a brake pressing sheet (4);
the bottoms of the three-foot stair climbing wheels (13) and the bottoms of the rollers (1) are positioned on the same horizontal plane;
constriction device (7) include casing (23), bounce frame (8) are at casing (23) inside sliding connection, second spacing hole (22) have been seted up to the right side wall upside of casing (23), first spacing hole (21) have been seted up to the right side wall downside of casing (23), the right side of first spacing hole (21) is provided with foot switch (20), the right side wall of bounce frame (8) has gag lever post (24) to spacing hole of second (22) position swing joint relatively.
2. The building site handling device based on supplementary climbing stair of elasticity of claim 1, characterized in that: the bottom of the bouncing frame (8) is fixedly connected with an elastic rubber pad (19), and the bouncing frame (8) is made of elastic steel.
3. The building site handling device based on supplementary climbing stair of elasticity of claim 1, characterized in that: the top of brake preforming (4) is provided with connecting plate (16), be provided with spring (15) between connecting plate (16) and brake preforming (4), the bottom of connecting plate (16) and the inside that is located connecting rod (6) are provided with wire rope (17), and its end connection has slide (18), the tip and the extrusion ram (12) of slide (18) rotate and are connected.
4. The building site handling device based on supplementary climbing stair of elasticity of claim 1, characterized in that: the outer walls of the brake pressing sheet (4) and the lifting handle (3) are provided with anti-skid lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199111.5A CN111319669B (en) | 2020-03-20 | 2020-03-20 | Building site handling device based on supplementary climbing stair of elasticity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199111.5A CN111319669B (en) | 2020-03-20 | 2020-03-20 | Building site handling device based on supplementary climbing stair of elasticity |
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| Publication Number | Publication Date |
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| CN111319669A CN111319669A (en) | 2020-06-23 |
| CN111319669B true CN111319669B (en) | 2021-04-27 |
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| CN202010199111.5A Active CN111319669B (en) | 2020-03-20 | 2020-03-20 | Building site handling device based on supplementary climbing stair of elasticity |
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| CN111824897B (en) * | 2020-08-03 | 2022-04-12 | 深圳市中航南光电梯工程有限公司 | Safety protection device for preventing accidental movement and overspeed of lift car of elevator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6078864A (en) * | 1983-10-07 | 1985-05-04 | サンワ車輌株式会社 | Stair lifting gear for wheelchair |
| CN86202696U (en) * | 1986-04-28 | 1986-12-24 | 吴铁励 | Stay rod type vehicle for travelling on land and up or down staires |
| CN2639124Y (en) * | 2002-02-23 | 2004-09-08 | 赵稳 | Semi-automatic stairs ascending hand cart |
| CN107200049A (en) * | 2017-07-11 | 2017-09-26 | 吴淑红 | A kind of stairs clambing handcart with damping |
| CN109109955B (en) * | 2018-09-03 | 2019-11-05 | 新沂市棋盘工业集中区建设发展有限公司 | A kind of star wheel type carrier that construction site uses |
| CN110843894B (en) * | 2019-11-22 | 2023-10-27 | 玉柴联合动力股份有限公司 | Material carrying device and stair climbing method thereof |
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