CN107792207B - Baby carriage capable of climbing stairs - Google Patents
Baby carriage capable of climbing stairs Download PDFInfo
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- CN107792207B CN107792207B CN201711004770.3A CN201711004770A CN107792207B CN 107792207 B CN107792207 B CN 107792207B CN 201711004770 A CN201711004770 A CN 201711004770A CN 107792207 B CN107792207 B CN 107792207B
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- 230000009194 climbing Effects 0.000 title claims abstract description 21
- 230000002457 bidirectional effect Effects 0.000 claims description 26
- 239000000411 inducer Substances 0.000 claims description 6
- 230000001939 inductive effect Effects 0.000 description 3
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/04—Endless track vehicles with tracks and alternative ground wheels, e.g. changeable from endless track vehicle into wheeled vehicle and vice versa
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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
- B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
- B62B9/02—Accessories or details specially adapted for children's carriages or perambulators providing for travelling up or down a flight of stairs
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Handcart (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Abstract
The invention belongs to the technical field of machinery, relates to a baby carriage capable of climbing stairs, and solves the technical problems that the existing baby carriage is poor in practicability and the like. The baby carriage comprises a bearing chassis and a frame, wherein the bearing chassis comprises a tray body, universal wheels are rotatably arranged at four corners of the tray body, a crawler belt device is arranged on the lower surface of the tray body, and a first driving source capable of driving the crawler belt device to lift along the height direction of the chassis is arranged between the crawler belt device and the tray body; the upper surface of the tray body is also provided with a connecting seat, and the bearing chassis also comprises an adjusting device which can enable the connecting seat to be always kept horizontal; the cradle is arranged on the upper surface of the frame, the lower surface of the frame is attached to the connecting seat, the four corners of the frame are rotatably provided with wheels, and a positioning mechanism capable of fixing the wheels and the connecting seat relatively is arranged between the wheels and the connecting seat. The baby carriage has the advantages of good practicability and the like.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to a baby carriage capable of climbing stairs.
Background
At present, many low-rise residential buildings in China are not provided with elevators, and the problem of going upstairs is obvious along with aging and arrival of a birth peak. For the old, the old people live on floors without elevators, and the old people may be injured when carrying some heavy articles, such as rice and the like; for families with babies, parents who go out usually use the baby carriage, but because the baby carriage cannot go up and down steps, parents going upstairs need to carry the baby carriage while embracing the baby, and one person is difficult to finish, and the physical strength is huge.
In order to solve the above problems, chinese patent CN 204659847U discloses an auxiliary stair climbing crawler, comprising a vehicle body and a driving device, wherein the driving device comprises a crawler, a driving wheel and a plurality of bearing inducing wheel sets; the driving wheel is driven by a motor, the driving wheel transmits power to the crawler belt through meshing with the crawler belt, the bearing inducing wheel set bears the vehicle body and induces and supports the crawler belt, the crawler belt is provided with inducing teeth, and the vehicle body is also provided with a storage groove for loading articles; the vehicle body is also provided with a handle, and the handle is provided with an electric control switch and a movable clamp.
Although the stair climbing crawler can help the old people to carry heavy objects to go upstairs or go out, and can also help parents with children to carry articles, baby strollers and babies to go upstairs and go uphill, the stair climbing crawler still has the following defects:
1. when the tracked vehicle runs on the ground, the tracked vehicle also needs to be driven by a motor, and if the tracked vehicle is manually pushed, the resistance is relatively large, so that the tracked vehicle is not suitable for being used on the ground, and the practicability is low;
2. above-mentioned tracked vehicle is when climbing the building, and whole car can follow the slope of stair and be the slope form, and the baby can drop easily because of the automobile body slope on the car, and the practicality is lower equally.
Disclosure of Invention
The invention aims to provide a baby carriage capable of climbing stairs, aiming at the problems in the prior art, and the technical problems to be solved by the invention are as follows: how to improve the practicability of the baby carriage.
The purpose of the invention can be realized by the following technical scheme:
the baby carriage capable of climbing stairs is characterized by comprising a bearing chassis and a frame, wherein the bearing chassis comprises a tray body, universal wheels are rotatably arranged at four corners of the tray body, a crawler belt device is arranged on the lower surface of the tray body, and a first driving source capable of driving the crawler belt device to lift along the height direction of the chassis is arranged between the crawler belt device and the tray body; the upper surface of the tray body is also provided with a connecting seat, and the bearing chassis also comprises an adjusting device which can enable the connecting seat to be always kept horizontal; the upper surface of frame is provided with the cradle, the lower surface of frame pastes with the connecting seat mutually and leans on, four corners of frame rotate and are provided with the wheel, be provided with between wheel and the connecting seat and make both relatively fixed's positioning mechanism.
The working principle is as follows: when the baby carriage is used on the flat ground, the universal wheels are arranged at the four corners of the tray body, so that the baby carriage can be normally used, and the friction force is lower compared with that of a crawler belt mode; when going upstairs and downstairs, the crawler device can be driven to descend by the driving source, so that the crawler device is contacted with the ground, and the downstairs can be carried out; when the baby carriage is positioned, the mode that the connecting seat is connected with the wheels is selected, so that a common baby carriage in the market can be directly matched and applied with the bearing chassis, and the practicability of the baby carriage is further improved; it should be noted that the shape and size of the tray and the connecting seat in the baby carriage are the same, and the tray and the connecting seat are attached together.
In the baby carriage capable of climbing stairs, the positioning mechanism comprises a front bidirectional cylinder and a rear bidirectional cylinder which are arranged on the upper surface of the connecting seat in parallel, the telescopic directions of the front bidirectional cylinder and the rear bidirectional cylinder are consistent with the width direction of the connecting seat, and a piston rod of the front bidirectional cylinder and a piston rod of the rear bidirectional cylinder can be inserted into a gap of the wheel. After the design has two-way cylinder before and two-way cylinder after, to the four-wheel baby's shallow that has on the market, can place the frame of baby's shallow in the upper surface of two-way cylinder before and two-way cylinder after, then insert the piston rod position of two-way cylinder before and the piston rod position of two-way cylinder after and form spacingly in the clearance of wheel to make frame and connecting seat relatively fixed, above-mentioned design can make four-wheel baby's shallow on the market directly be suitable for, further improves the practicality of this baby's shallow.
In foretell baby carriage that can climb stair, the upper surface of connecting seat is provided with the slide rail along its length direction, back bidirectional cylinder slides and sets up on the slide rail, be provided with on the connecting seat and drive this back bidirectional cylinder along the gliding telescopic cylinder of slide rail length direction. After the sliding rail and the telescopic cylinder are designed, the distance between the front bidirectional cylinder and the rear bidirectional cylinder can be adjusted for the cart with different distances between the front wheel and the rear wheel on the market, so that the practicability of the cart is further improved; in the application, the slide rail is not marked in the figure due to the view angle, and the slide rail is universal on the market.
In the baby carriage capable of climbing stairs, the connecting seat is uniformly provided with a plurality of square holes, the length of each square hole is greater than the diameter of the corresponding wheel, and the width of each square hole is greater than the thickness of the corresponding wheel. After the design has the quad slit, to controlling the less shallow of wheel interval on the market, can make its wheel hold in the quad slit can, and to controlling the great shallow of wheel interval, its wheel is unsettled outside the connecting seat can.
In the baby carriage capable of climbing stairs, the piston rod is coaxially fixed with a disc made of rubber, and the disc can be attached to the side surface of the wheel. After the disks are designed, when the frame is fixed, when the end part of the piston rod is inserted into the gap of the wheel, the four disks can be abutted against the wheel to prevent the frame from leaping up along the width direction.
In foretell baby carriage that can climb stair, crawler attachment includes the automobile body, the both sides of automobile body are rotated and are provided with action wheel, bogie wheel, inducer and riding wheel, action wheel, bogie wheel, inducer and riding wheel are connected through flexible chain link, still be provided with on the automobile body and drive action wheel pivoted motor. The motor rotates to drive the driving wheel to rotate, so that the chain ring is driven to move, the bearing chassis moves, and the chain ring is particularly suitable for environments with slopes such as stairs.
In foretell baby carriage that can climb stair, driving source one includes the preceding electronic jar and the back electronic jar that distribute along disk body length direction, the upper end of preceding electronic jar and back electronic jar all set up perpendicularly in the lower surface of disk body, the lower extreme of preceding electronic jar with the automobile body is articulated mutually, the wheel groove has still been seted up along self length direction to the automobile body, the lower extreme of back electronic jar be provided with wheel groove matched with gyro wheel. Like above design, when meetting among the environment that has the slope such as stair, electronic jar before extensible for crawler attachment's front end descends until contacting with ground, and electronic jar after the extension simultaneously makes crawler attachment's rear end descend and ground contact, and at this in-process, the gyro wheel of electronic jar lower extreme in back rolls in the wheel groove, can play the effect of regulation and support.
In the above-mentioned baby carriage capable of climbing stairs, the upper ends of the front electric cylinder and the rear electric cylinder and the disc body are respectively provided with a front pressure sensor and a rear pressure sensor, and the bearing chassis further comprises a controller connected with the motor, the front pressure sensor and the rear pressure sensor. When climbing stairs, the controller can send the extension instruction with electronic jar in back electronic jar forward, and electronic jar in front and electronic jar in back then can drive crawler attachment's front and back end downstream respectively and contact until with ground, and the pressure that preceding pressure sensor and back pressure sensor detected this moment can increase by a wide margin to with signal transmission to controller, electronic jar in controller forward and the electronic jar in back send corresponding instruction, and send the walking instruction to the motor and climb the building.
In the above stroller capable of climbing stairs, the adjustment device further includes an inclination sensor, and the inclination sensor is connected to the controller. After the inclination angle sensor is designed, the inclination angle sensor can immediately detect the size of an included angle formed between the connecting seat and the horizontal plane and transmit a signal to the controller, and the controller further transmits corresponding extension or contraction instructions to the forward electric cylinder and the rear electric cylinder, so that a supported object placed on the connecting seat can be always kept horizontal when the bearing chassis climbs a building; specifically, when going upstairs, if the inclination angle sensor detects that the bearing chassis is in a state of high front and low back, the signal can be transmitted to the controller, and the controller sends an extension instruction to the rear electric cylinder until the bearing chassis restores to the horizontal position again; the tilt sensor is a relatively mature part, and is not described herein again, as described in the content of applying the tilt sensor to an agricultural dump truck in the application case of Baidu encyclopedia; it should be noted that although the tilt angle sensor is disclosed in the prior art, in the present application, the tilt angle sensor is skillfully combined with the front electric cylinder and the rear electric cylinder, since the front electric cylinder and the rear electric cylinder can make the mobile bearing device switch between the universal wheel walking and the crawler walking by stretching, and then the tilt angle sensor is combined with the controller, the front electric cylinder and the rear electric cylinder, the horizontal adjustment of the mobile bearing chassis can be realized by the same set of structure, the cost is effectively controlled while the multifunction is realized, so that the mobile bearing chassis is more civilized, and the practicability is improved from the commercial perspective.
Compared with the prior art, the invention has the following advantages:
1. when the baby carriage is used on the flat ground, the universal wheels are arranged at the four corners of the tray body, so that the baby carriage can be normally used, and the friction force is lower compared with that of a crawler belt mode; when going upstairs and downstairs, the crawler device can be driven to descend by the driving source, so that the crawler device is contacted with the ground, and the downstairs can be carried out; when the baby carriage is positioned, the mode that the connecting seat is connected with the wheels is selected, so that a common baby carriage in the market can be directly matched and applied with the bearing chassis, and the practicability of the baby carriage is further improved;
2. after the design has two-way cylinder before and two-way cylinder after, to the four-wheel baby's shallow that has on the market, can place the frame of baby's shallow in the upper surface of two-way cylinder before and two-way cylinder after, then insert the piston rod position of two-way cylinder before and the piston rod position of two-way cylinder after and form spacingly in the clearance of wheel to make frame and connecting seat relatively fixed, above-mentioned design can make four-wheel baby's shallow on the market directly be suitable for, further improves the practicality of this baby's shallow.
3. In this application, combine together tilt sensor and preceding electronic jar and back electronic jar ingeniously, because preceding electronic jar and back electronic jar itself accessible are flexible to make this removal bear the device and can switch between universal wheel walking and track walking, combine together tilt sensor and controller and preceding electronic jar, back electronic jar again, then the same set of structure of accessible, the realization removes the horizontal adjustment who bears the chassis, when realizing multi-functionally, the cost is controlled effectively, make this removal bear the chassis seem more civilization, from the commercial perspective, its practicality has also been improved.
Drawings
Fig. 1 is an isometric view of the present stroller.
Figure 2 is an isometric view of the present mobile load carrying chassis.
Fig. 3 is a partially enlarged view of fig. 2.
Figure 4 is a left side view of the present load-bearing chassis.
Fig. 5 is a schematic diagram of the present load-bearing chassis.
In the figure, 1, a disc body; 2. a universal wheel; 3. a crawler unit; 31. a driving wheel; 32. a flexible link; 33. a motor; 34. a vehicle body; 4. a first driving source; 41. a front electric cylinder; 42. a rear electric cylinder; 43. a wheel groove; 44. a roller; 45. a front pressure sensor; 46. a rear pressure sensor; 5. a connecting seat; 6. a controller; 7. an inclination angle sensor. 8. A frame; 81. a cradle; 82. a wheel; 83. a square hole; 91. a front bidirectional cylinder; 92. a rear bidirectional cylinder; 93. a telescopic cylinder; 94. a disk.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the baby carriage comprises a bearing chassis and a frame 8, wherein the bearing chassis comprises a tray body 1, universal wheels 2 are rotatably arranged at four corners of the tray body 1, a crawler belt device 3 is arranged on the lower surface of the tray body 1, and a driving source I4 capable of driving the crawler belt device 3 to lift along the height direction of the chassis is arranged between the crawler belt device 3 and the tray body 1; the tray body 1 is also provided with a connecting seat 5, and the bearing chassis also comprises an adjusting device which can enable the connecting seat 5 to be always kept horizontal; the cradle 81 is arranged on the upper surface of the frame 8, the lower surface of the frame 8 is attached to the connecting base 5, the wheels 82 are rotatably arranged on the four corners of the frame 8, and a positioning mechanism capable of fixing the wheels 82 and the connecting base 5 relatively is arranged between the wheels 82 and the connecting base 5.
Specifically, as shown in fig. 2, the positioning mechanism includes a front bidirectional cylinder 91 and a rear bidirectional cylinder 92 which are arranged in parallel on the upper surface of the connecting base 5, the extension and retraction directions of the front bidirectional cylinder 91 and the rear bidirectional cylinder 92 are consistent with the width direction of the connecting base 5, and both a piston rod of the front bidirectional cylinder 91 and a piston rod of the rear bidirectional cylinder 92 can be inserted into a gap of the wheel 82. The upper surface of connecting seat 5 is provided with the slide rail along its length direction, and back two-way cylinder 92 slides and sets up on the slide rail, is provided with on the connecting seat 5 to drive this back two-way cylinder 92 along the gliding telescopic cylinder 93 of slide rail length direction. Evenly seted up a plurality of quad slit 83 on the connecting seat 5, the length of quad slit 83 is greater than the diameter of wheel 82, and the width of quad slit 83 is greater than the thickness of wheel 82. A disk 94 made of rubber is coaxially fixed to the piston rod, and the disk 94 can abut against the side surface of the wheel 82.
As shown in fig. 2, 3, 4 and 5, the crawler device 3 includes a vehicle body 34, a driving wheel 31, a loading wheel, an inducer and a carrier roller are rotatably disposed on two sides of the vehicle body 34, the driving wheel 31, the loading wheel, the inducer and the carrier roller are connected by a flexible chain ring 32, and a motor 33 capable of driving the driving wheel 31 to rotate is further disposed on the vehicle body 34. The first driving source 4 comprises a front electric cylinder 41 and a rear electric cylinder 42 which are distributed along the length direction of the tray body 1, the upper ends of the front electric cylinder 41 and the rear electric cylinder 42 are vertically arranged on the lower surface of the tray body 1, the lower end of the front electric cylinder 41 is hinged with the vehicle body 34, the vehicle body 34 is further provided with a wheel groove 43 along the length direction of the vehicle body, and the lower end of the rear electric cylinder 42 is provided with a roller 44 matched with the wheel groove 43. A front pressure sensor 45 and a rear pressure sensor 46 are respectively arranged between the upper ends of the front electric cylinder 41 and the rear electric cylinder 42 and the disc body 1, and the bearing chassis further comprises a controller 6 connected with the motor 33, the front pressure sensor 45 and the rear pressure sensor 46. The adjusting device further comprises a tilt sensor 7, the tilt sensor 7 being connected to the controller 6.
The working principle of the invention is as follows: when the baby carriage is used on the flat ground, the universal wheels are arranged at the four corners of the tray body, so that the baby carriage can be normally used, and the friction force is lower compared with that of a crawler belt mode; when going upstairs and downstairs, the crawler device can be driven to descend by the driving source, so that the crawler device is contacted with the ground, and the downstairs can be carried out; and when the location frame in this application, the mode that the selection is connected with the wheel with the connecting seat for general baby's shallow on the market can directly bear the chassis and be suitable for with this, further improves the practicality of this baby's shallow.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (5)
1. The baby carriage capable of climbing stairs is characterized by comprising a bearing chassis and a frame (8), wherein the bearing chassis comprises a tray body (1), universal wheels (2) are rotatably arranged at four corners of the tray body (1), a crawler device (3) is arranged on the lower surface of the tray body (1), and a first driving source (4) capable of driving the crawler device (3) to lift along the height direction of the bearing chassis is arranged between the crawler device (3) and the tray body (1); the disc body (1) is also provided with a connecting seat (5), and the bearing chassis also comprises an adjusting device which can enable the connecting seat (5) to be always kept horizontal; a cradle (81) is arranged on the upper surface of the frame (8), the lower surface of the frame (8) is attached to the connecting seat (5), wheels (82) are rotatably arranged at four corners of the frame (8), and a positioning mechanism capable of fixing the wheels (82) and the connecting seat (5) relatively is arranged between the wheels (82) and the connecting seat (5); the positioning mechanism comprises a front bidirectional cylinder (91) and a rear bidirectional cylinder (92) which are arranged on the upper surface of the connecting seat (5) in parallel, the telescopic directions of the front bidirectional cylinder (91) and the rear bidirectional cylinder (92) are consistent with the width direction of the connecting seat (5), and a piston rod of the front bidirectional cylinder (91) and a piston rod of the rear bidirectional cylinder (92) can be inserted into a gap of the wheel (82);
a slide rail is arranged on the upper surface of the connecting seat (5) along the length direction of the connecting seat, the rear bidirectional cylinder (92) is arranged on the slide rail in a sliding manner, and a telescopic cylinder (93) capable of driving the rear bidirectional cylinder (92) to slide along the length direction of the slide rail is arranged on the connecting seat (5);
a plurality of square holes (83) are uniformly formed in the connecting seat (5), the length of each square hole (83) is larger than the diameter of each wheel (82), and the width of each square hole (83) is larger than the thickness of each wheel (82);
the piston rod is coaxially fixed with a disc (94) made of rubber, and the disc (94) can be abutted against the side surface of the wheel (82).
2. The baby carriage capable of climbing stairs according to claim 1, wherein the crawler device (3) comprises a carriage body (34), two sides of the carriage body (34) are rotatably provided with a driving wheel (31), a loading wheel, an inducer and a supporting pulley, the driving wheel (31), the loading wheel, the inducer and the supporting pulley are connected through a flexible chain ring (32), and the carriage body (34) is further provided with a motor (33) capable of driving the driving wheel (31) to rotate.
3. The baby carriage capable of climbing stairs according to claim 2, wherein the first driving source (4) comprises a front electric cylinder (41) and a rear electric cylinder (42) which are distributed along the length direction of the tray body (1), the upper ends of the front electric cylinder (41) and the rear electric cylinder (42) are vertically arranged on the lower surface of the tray body (1), the lower end of the front electric cylinder (41) is hinged to the carriage body (34), the carriage body (34) is further provided with a wheel groove (43) along the length direction thereof, and the lower end of the rear electric cylinder (42) is provided with a roller (44) matched with the wheel groove (43).
4. A stroller for climbing stairs according to claim 3, wherein a front pressure sensor (45) and a rear pressure sensor (46) are respectively disposed between the upper ends of the front electric cylinder (41) and the rear electric cylinder (42) and the disc body (1), and the chassis further comprises a controller (6) connected to the motor (33), the front pressure sensor (45) and the rear pressure sensor (46).
5. A stroller for stair climbing according to claim 4, wherein the adjustment device further comprises a tilt sensor (7), the tilt sensor (7) being connected to the controller (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711004770.3A CN107792207B (en) | 2017-10-24 | 2017-10-24 | Baby carriage capable of climbing stairs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711004770.3A CN107792207B (en) | 2017-10-24 | 2017-10-24 | Baby carriage capable of climbing stairs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107792207A CN107792207A (en) | 2018-03-13 |
| CN107792207B true CN107792207B (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711004770.3A Active CN107792207B (en) | 2017-10-24 | 2017-10-24 | Baby carriage capable of climbing stairs |
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| Country | Link |
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| CN (1) | CN107792207B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111516768B (en) * | 2020-04-22 | 2020-11-27 | 农业农村部南京农业机械化研究所 | Wheel-track transformation chassis and working method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2741323A1 (en) * | 1977-03-10 | 1978-09-14 | Werner Klaus Konzack | Hand propelled vehicle e.g. pram - has wheels mounted on pivoted arms allowing tracks to be used on rough ground or steps |
| CN102975759A (en) * | 2011-05-15 | 2013-03-20 | 叶桦 | Multifunctional bassinet |
| CN203547187U (en) * | 2013-11-03 | 2014-04-16 | 河北奥博停车设备科技有限公司 | Feed positioning platform for stereo garage |
| CN205365717U (en) * | 2016-01-28 | 2016-07-06 | 南京信息工程大学 | Climb stair baby car skeleton structure |
| CN205819258U (en) * | 2016-05-27 | 2016-12-21 | 南京农业大学 | A kind of toter being applicable to various road conditions |
| CN205819244U (en) * | 2016-06-14 | 2016-12-21 | 浙江工业职业技术学院 | A kind of novel climbing machine |
-
2017
- 2017-10-24 CN CN201711004770.3A patent/CN107792207B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2741323A1 (en) * | 1977-03-10 | 1978-09-14 | Werner Klaus Konzack | Hand propelled vehicle e.g. pram - has wheels mounted on pivoted arms allowing tracks to be used on rough ground or steps |
| CN102975759A (en) * | 2011-05-15 | 2013-03-20 | 叶桦 | Multifunctional bassinet |
| CN203547187U (en) * | 2013-11-03 | 2014-04-16 | 河北奥博停车设备科技有限公司 | Feed positioning platform for stereo garage |
| CN205365717U (en) * | 2016-01-28 | 2016-07-06 | 南京信息工程大学 | Climb stair baby car skeleton structure |
| CN205819258U (en) * | 2016-05-27 | 2016-12-21 | 南京农业大学 | A kind of toter being applicable to various road conditions |
| CN205819244U (en) * | 2016-06-14 | 2016-12-21 | 浙江工业职业技术学院 | A kind of novel climbing machine |
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| CN107792207A (en) | 2018-03-13 |
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