CN112498245A - High-altitude operation device for automatically placing and retracting boarding ladder and operation method - Google Patents
High-altitude operation device for automatically placing and retracting boarding ladder and operation method Download PDFInfo
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- CN112498245A CN112498245A CN202011411955.8A CN202011411955A CN112498245A CN 112498245 A CN112498245 A CN 112498245A CN 202011411955 A CN202011411955 A CN 202011411955A CN 112498245 A CN112498245 A CN 112498245A
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- ladder
- telescopic
- supporting rod
- rod
- extension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R3/00—Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
- B60R3/02—Retractable steps or ladders, e.g. movable under shock
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- Mechanical Engineering (AREA)
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Abstract
The invention provides an overhead working device for automatically placing and withdrawing an upper vehicle ladder and an operation method, the overhead working device for automatically placing and withdrawing an upper vehicle ladder comprises a telescopic ladder containing box arranged on a vehicle frame, a telescopic oil cylinder is arranged in the telescopic ladder containing box, and the other end of the telescopic oil cylinder is connected with a telescopic ladder mechanism, so that the automatic placing and withdrawing of the telescopic ladder is realized, the structure is simple, and the labor is saved; the length of the ladder stand can be automatically set according to the height of the vehicle body, so that the problem that the boarding ladder is difficult to get on due to high ground; the extension ladder mechanism comprises a sliding rod, a supporting rod component, a stepping plate component and a ground contact detection device, wherein the bottom end of the stepping plate component is provided with the ground contact detection device, after the supporting rod component is detected to contact the ground, the extension ladder cannot continue to stretch out, the extension ladder is protected from being damaged, and the service life of the extension ladder is greatly prolonged.
Description
Technical Field
The invention belongs to the technical field of engineering equipment, and particularly relates to an automatic placing and withdrawing boarding ladder and an aerial working device.
Background
As a special vehicle for manned high-altitude operation, the high-altitude operation vehicle increasingly replaces the climbing operation mode with extremely high danger in the past. With the development of urban construction, the overhead working truck is not only used in large-scale infrastructures such as wharfs, airports, water conservancy, power stations and gardens, but also widely applied to installation and management of urban facilities such as street lamps, communication, traffic, advertisements and photography.
The high-altitude operation vehicle comprises a vehicle chassis, supporting legs, an auxiliary frame, a rotary table, an arm support and other main components. When the overhead working truck works, the supporting legs need to be supported, so that the tires of the automobile chassis can lift off the ground, and the loading action can be carried out. Due to the consideration of the trafficability of the whole vehicle, when the boarding ladder is generally arranged, the lowest end of the boarding ladder cannot be too low to the ground, otherwise, the trafficability of the whole vehicle is affected. However, when the overhead working truck, especially a large-scale overhead working truck, works, after the supporting legs are supported, the ground clearance of the boarding ladder is very high, when a person gets on the truck, the first stepping step is high, the person gets on the truck difficultly, and the boarding ladder needs manpower to be placed and recovered, so that the manpower is consumed; the ladder stand has a steep angle, and the getting on and off of the vehicle are inconvenient.
Disclosure of Invention
The invention mainly provides an aerial working device capable of automatically placing and retracting an upper ladder and an operation method thereof, which are used for solving the technical problems in the background technology.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides an automatic high altitude construction device who places and withdraws of boarding ladder, is including installing the extension ladder containing box on the frame, install telescopic cylinder in the extension ladder containing box, telescopic cylinder's the other end is connected with extension ladder mechanism, extension ladder mechanism is including slide bar, bracing piece subassembly, the subassembly of marking time and the detection device that contacts to the earth, the one end of slide bar is connected telescopic cylinder, the other end articulate there is the bracing piece subassembly, the subassembly of marking time articulates on the bracing piece subassembly, just the bottom of the subassembly of marking time is provided with the detection device that contacts to the earth, the front end of extension ladder containing box in the bottom position of slide bar still is provided with the roller.
Further, the bracing piece subassembly includes bracing piece, No. two bracing pieces, No. three bracing pieces, No. four bracing pieces, the one end of a bracing piece, No. two bracing pieces with the slide bar is articulated, the other end respectively with No. three bracing pieces, No. four bracing pieces are articulated, a bracing piece with No. three bracing pieces No. two bracing pieces with all be provided with the angle stopper between No. four bracing pieces.
Further, the subassembly of marking time board includes step board and step board down, it articulates to go up step board one end a bracing piece with No. three bracing piece coupling parts's upper end, the other end articulates No. two bracing pieces with No. four bracing piece coupling parts's upper end, step board both ends articulate respectively down No. three bracing pieces with No. four bracing pieces's lower extreme, it installs to touch to the ground detection device the lower extreme of step board down.
Further, the ground contact detection device comprises a detection switch, a fixed block, a telescopic rod and a ground contact head, wherein the fixed block is arranged on the side wall of the lower stepping plate, the telescopic rod is connected with the fixed block through a built-in reset spring, the ground contact head is arranged at the lower end of the telescopic rod, the detection switch is arranged at the upper end of the lower stepping plate, and the detection part is downward and close to the upper end of the telescopic rod.
An operating method for automatically placing and retracting an boarding ladder comprises the following steps:
step one, when the upper vehicle ladder needs to be placed, the telescopic oil cylinder extends out, and the telescopic cylinder drives the whole telescopic ladder mechanism to extend out;
step two, after the lower stepping plate, the third support rod and the fourth support rod extend along the rolling pulley, the lower stepping plate, the third support rod and the fourth support rod form a parallelogram to droop under the action of gravity and an angle limiting block;
step three, because the ground-contact rigidity of the whole vehicle is different along with the height of the supporting legs, the extension amount of the extension ladder is different, after the lower step plate contacts the ground, the ground-contact detection device contacts the ground through a ground contact head on the extension bar, the extension bar stops retracting, and the extension bar contacts a detection switch;
and step four, detecting a switch return signal, and stopping the telescopic oil cylinder and finishing the placing of the telescopic ladder.
Step five: the retracting process and the placing process of the telescopic ladder are opposite.
The invention has the beneficial effects that:
1. the telescopic oil cylinder is arranged in the telescopic ladder storage box and connected with the telescopic ladder mechanism, so that the telescopic ladder can be automatically placed and retracted, the structure is simple, and the labor is saved; can be according to the height of automobile body, the length of placing the cat ladder automatically has solved because of getting on the bus ladder ground is higher, the problem of staff's difficulty of getting on the bus.
2. All be provided with the angle stopper between bracing piece and No. three bracing pieces, No. two bracing pieces and No. four bracing pieces, utilize the parallelogram principle, the cat ladder flier remains the level throughout.
3. The bottom of the lower step plate is provided with the ground contact detection device, and after the ground contact, the extension ladder can not continue to extend, so that the extension ladder is protected from being damaged, and the service life of the extension ladder is greatly prolonged.
Drawings
FIG. 1 is a schematic structural view of an aerial work device with an automatic parking and retraction function for an boarding ladder;
FIG. 2 is a schematic structural view of a touchdown detection apparatus;
FIG. 3 is a flow chart of the setting of the extension ladder;
in the figure, 1, an extension ladder storage box, 2, an extension oil cylinder, 3, a sliding rod, 41, a first support rod, 42, a second support rod, 43, a third support rod, 44, a fourth support rod, 51, an upper step plate, 52, a lower step plate, 6, a ground contact detection device, 61, a detection switch, 62, a fixed block, 63, an extension rod, 64, a ground contact head, 7 and a rolling pulley.
Detailed Description
In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The embodiment refers to fig. 1, and an overhead working device for automatically placing and withdrawing an upper ladder comprises an extension ladder storage box 1 installed on a frame, wherein an extension oil cylinder 2 is installed in the extension ladder storage box 1, the other end of the extension oil cylinder 2 is connected with an extension ladder mechanism, the extension ladder mechanism comprises a sliding rod 3, a supporting rod component, a stepping plate component and a ground contact detection device 6, one end of the sliding rod 3 is connected with the extension oil cylinder 2, the other end of the sliding rod is hinged with the supporting rod component, the stepping plate component is hinged on the supporting rod component, the bottom of the stepping plate component is provided with the ground contact detection device 6, and the front end of the extension ladder storage box 1 is further provided with a rolling pulley 7 at the bottom position of the sliding rod 3 and used for guiding the extension ladder when being placed or withdrawn.
In the structure, the support rod assembly comprises a support rod 41, a support rod 42, a support rod 43 and a support rod 44, one end of the support rod 41 and the support rod 42 is hinged to the sliding rod 3, the other end of the support rod is hinged to the support rod 43 and the support rod 44, an angle limiting block is arranged between the support rod 41 and the support rod 43, the support rod 42 and the support rod 44, and the support rod assembly is limited to droop in a parallelogram within the range of the angle limiting block.
The present embodiment takes two steps as an example: the step plate assembly comprises an upper step plate 51 and a lower step plate 52, one end of the upper step plate 51 is hinged to the upper end of the connecting part of the first support rod 41 and the third support rod 43, the other end of the upper step plate is hinged to the upper end of the connecting part of the second support rod 42 and the fourth support rod 44, two ends of the lower step plate 52 are respectively hinged to the lower ends of the third support rod 43 and the fourth support rod 44, the ground contact detection device 6 is installed at the lower end of the lower step plate 52, and the lower step plate 52 always keeps a relative horizontal position.
As shown in fig. 2, the ground contact detecting device 6 includes a detecting switch 61, a fixed block 62, an extension rod 63, and a ground contact head 64, the fixed block 62 is disposed on a side wall of the lower step plate 52, the extension rod 63 and the fixed block 64 are connected by a built-in return spring, the extension rod 63 is movable relative to the fixed block 62, the ground contact head 64 is disposed at a lower end of the extension rod 63, the detecting switch 61 is disposed at an upper end of the lower step plate 52, and a detecting portion is disposed downward and close to the upper end of the extension rod 63.
As shown in fig. 3, an operation method for automatically placing and retracting an boarding ladder includes the following steps:
step one, when the upper vehicle ladder needs to be placed, the telescopic oil cylinder extends out, and the telescopic cylinder drives the whole telescopic ladder mechanism to extend out;
step two, after the lower stepping plate, the third support rod and the fourth support rod extend along the rolling pulley, the lower stepping plate, the third support rod and the fourth support rod form a parallelogram to droop under the action of gravity and an angle limiting block;
step three, because the ground-contact rigidity of the whole vehicle is different along with the height of the supporting legs, the extension amount of the extension ladder is different, after the lower step plate contacts the ground, the ground-contact detection device contacts the ground through a ground contact head on the extension bar, the extension bar stops retracting, and the extension bar contacts a detection switch;
and step four, detecting a switch return signal, and stopping the telescopic oil cylinder and finishing the placing of the telescopic ladder.
Step five: the retracting process and the placing process of the telescopic ladder are opposite.
The invention is described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the above-described embodiments, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (5)
1. The utility model provides an automatic high altitude construction device of placing and withdrawing of getting on the bus ladder, a serial communication port, including installing extension ladder containing box (1) on the frame, install telescopic cylinder (2) in extension ladder containing box (1), the other end of telescopic cylinder (2) is connected with extension ladder mechanism, extension ladder mechanism is including slide bar (3), bracing piece subassembly, the subassembly of marking time and detection device (6) that contacts to earth, the one end of slide bar (3) is connected telescopic cylinder (2), the other end articulates there is the bracing piece subassembly, the subassembly of marking time articulates on the bracing piece subassembly, just the bottom of the subassembly of marking time is provided with detection device (6) contacts to earth, the front end of extension ladder containing box (1) in the bottom position of slide bar (3) still is provided with roller pulley (7).
2. The high-altitude operation device capable of being automatically placed and retracted for getting on the ladder according to claim 1, wherein the supporting rod assembly comprises a first supporting rod (41), a second supporting rod (42), a third supporting rod (43) and a fourth supporting rod (44), one end of the first supporting rod (41) and one end of the second supporting rod (42) are hinged to the sliding rod (3), the other end of the first supporting rod is hinged to the third supporting rod (43) and the fourth supporting rod (44), and angle limiting blocks are arranged among the first supporting rod (41), the third supporting rod (43), the second supporting rod (42) and the fourth supporting rod (44).
3. The high-altitude operation device for automatically placing and withdrawing an ascending stair according to claim 1, wherein the step plate assembly comprises an upper step plate (51) and a lower step plate (52), one end of the upper step plate (51) is hinged to the upper end of the connecting part of the first support rod (41) and the third support rod (43), the other end of the upper step plate is hinged to the upper end of the connecting part of the second support rod (42) and the fourth support rod (44), the two ends of the lower step plate (52) are respectively hinged to the lower ends of the third support rod (43) and the fourth support rod (44), and the ground contact detection device (6) is installed at the lower end of the lower step plate (52).
4. The high-altitude operation device for automatically placing and retracting an ascending stair according to claim 3, wherein the ground contact detection device (6) comprises a detection switch (61), a fixed block (62), a telescopic rod (63) and a ground contact head (64), the fixed block (62) is arranged on the side wall of the lower step plate (52), the telescopic rod (63) and the fixed block (64) are connected through a built-in return spring, the ground contact head (64) is arranged at the lower end of the telescopic rod (63), the detection switch (61) is arranged at the upper end of the lower step plate (52), and the detection part is downward and close to the upper end of the telescopic rod (63).
5. An operating method for automatic landing and retraction of an access ladder, based on an automatic landing and retraction aerial work device according to any of claims 1-4, characterized by the following steps:
step one, when the upper vehicle ladder needs to be placed, the telescopic oil cylinder extends out, and the telescopic cylinder drives the whole telescopic ladder mechanism to extend out;
step two, after the lower stepping plate, the third support rod and the fourth support rod extend along the rolling pulley, the lower stepping plate, the third support rod and the fourth support rod form a parallelogram to droop under the action of gravity and an angle limiting block;
step three, because the ground-contact rigidity of the whole vehicle is different along with the height of the supporting legs, the extension amount of the extension ladder is different, after the lower step plate contacts the ground, the ground-contact detection device contacts the ground through a ground contact head on the extension bar, the extension bar stops retracting, and the extension bar contacts a detection switch;
step four, the detection switch returns a signal, the telescopic oil cylinder does not act any more, and the telescopic ladder is placed completely;
and step five, the retracting process and the placing process of the telescopic ladder are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011411955.8A CN112498245B (en) | 2020-12-04 | 2020-12-04 | High-altitude operation device capable of automatically placing and withdrawing boarding ladder and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011411955.8A CN112498245B (en) | 2020-12-04 | 2020-12-04 | High-altitude operation device capable of automatically placing and withdrawing boarding ladder and operation method |
Publications (2)
| Publication Number | Publication Date |
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| CN112498245A true CN112498245A (en) | 2021-03-16 |
| CN112498245B CN112498245B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011411955.8A Active CN112498245B (en) | 2020-12-04 | 2020-12-04 | High-altitude operation device capable of automatically placing and withdrawing boarding ladder and operation method |
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| CN209410284U (en) * | 2018-12-28 | 2019-09-20 | 平湖市华海造船有限公司 | Automatic ship ladder structure of catamaran |
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2020
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| US5299904A (en) * | 1992-03-26 | 1994-04-05 | Hogan Mfg., Inc. | Vehicle lift with contact sensor |
| CN201953300U (en) * | 2010-12-09 | 2011-08-31 | 沈阳水务集团有限公司 | Automatic boarding ladder stand |
| CN202641535U (en) * | 2012-06-15 | 2013-01-02 | 烟台杰瑞石油服务集团股份有限公司 | Drawing type ladder stand for vehicle |
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| Publication number | Publication date |
|---|---|
| CN112498245B (en) | 2023-09-26 |
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