CN212583598U - Electric folding ladder - Google Patents
Electric folding ladder Download PDFInfo
- Publication number
- CN212583598U CN212583598U CN202020416329.7U CN202020416329U CN212583598U CN 212583598 U CN212583598 U CN 212583598U CN 202020416329 U CN202020416329 U CN 202020416329U CN 212583598 U CN212583598 U CN 212583598U
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- China
- Prior art keywords
- ladder
- folding ladder
- push rod
- rod motor
- end part
- Prior art date
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- Expired - Fee Related
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- 230000009471 action Effects 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims 1
- 230000005484 gravity Effects 0.000 description 7
- 230000007306 turnover Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 2
- 101100007327 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) COS12 gene Proteins 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 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
- 230000008569 process Effects 0.000 description 1
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- Ladders (AREA)
Abstract
The utility model provides an electronic ladder that rolls over that turns over, electronic turning over a ladder and installing in the operation car of taking the side to draw the case, include: a folding ladder; a tension spring; a push rod motor; the fixed end part of the tension spring is arranged on a side draw box wall plate, the tension end part of the tension spring is fixed on a bracket at one side of the folding ladder, the fixed end part of the push rod motor is arranged on the side draw box wall plate, and the action end part of the push rod motor is arranged on a bracket at the other side of the folding ladder; the electric folding ladder is arranged on the side pull box, occupies less space of the side pull box, and can reduce manual operation of the folding ladder by electromechanically opening and closing the electric folding ladder, so that the use experience is improved.
Description
Technical Field
The invention relates to the field of ladders, in particular to an electric folding ladder.
Background
In the prior art, the professional operation vehicle with the side draw box continuously increases equipment along with the change of requirements and professional technologies, so that stricter requirements are provided for the installation design of the equipment of the professional operation vehicle, the size design of the side draw box is related to the operation space of the professional operation vehicle, in the prior art scheme, the design of the side draw box is continuously increased, the installation space in a carriage is made to be smaller and smaller, and especially, higher requirements are provided for the installation of larger equipment such as a side draw box ladder.
SUMMERY OF THE UTILITY MODEL
The utility model discloses one of them main aim at provides an electronic ladder that rolls over, electronic roll over a ladder skillfully uses drag gas spring, push rod motor, will roll over a ladder installation and be fixed in the side and draw on the case, can turn over a book and be fixed in the side and draw on the case in non-user state, reduce installation space by a wide margin.
Another object of the utility model is to provide an electronic ladder of rolling over that turns over, electronic the ladder of rolling over can realize opening automatically and closing through shift knob, need not operating personnel manual operation and can realize turning over a ladder frame and turning over of ladder footboard and open, more electromechanical, improve the result of use that turns over the ladder.
Another main object of the utility model is to provide an electronic ladder that rolls over that turns over, electronic turning over the ladder through the mounted position to tension spring and push rod motor and the design on the push-and-pull power angle for turn over the ladder and can guarantee that tension spring has when receiving and turn over the ladder and have a pulling force, make the push rod motor keep inseparable receipts under the no effort condition to receive the state.
Another object of the utility model is to provide an electronic ladder that rolls over that turns over, electronic turning over is rolled over the ladder and is passed through the mounted position and the design on the push-and-pull power angle to tension spring and push rod motor for when turning over the state that the ladder was opened completely, can realize the open mode of self-adaptation through self gravity, can avoid rolling over a ladder self perk unstability.
Another object of the utility model is to provide an electronic ladder of rolling over that turns over, electronic the turning over ladder is installed on the box to forward and reverse circular telegram to the push rod motor through control circuit realize to turning over the extension of rolling over the elevator and receive and close.
Another object of the utility model is to provide an electronic ladder that rolls over that turns over, electronic ladder that rolls over has saved the space through compact installation design to can avoid repeatedly opening the door on the side draw-box.
In order to achieve at least one of the above objects, the present invention further provides an electric folding ladder mounted to a working vehicle with a side draw box, comprising:
a folding ladder;
a tension spring;
a push rod motor;
the fixed end part of the tension spring is arranged on a side draw box wall plate, the tension end part of the tension spring is fixed on a bracket at one side of the folding ladder, the fixed end part of the push rod motor is arranged on the side draw box wall plate, and the action end part of the push rod motor is arranged on a bracket at the other side of the folding ladder.
According to the present invention, the outer side surfaces of the two supports of the foldable ladder are respectively provided with a rotary joint, and the pulling force end of the pulling spring and the action end of the push rod motor are respectively rotatably connected to the rotary joint.
According to the utility model discloses another preferred embodiment, rotary joint is set up in two support lateral surfaces are close to turn over the connecting end of folding ladder, wherein rotary joint is less than to connecting end's distance turning over the third of folding ladder length.
According to another preferred embodiment of the present invention, the connecting end is implemented as a hinge, and the folding ladder can be folded up and down along the hinge.
According to another preferred embodiment of the present invention, the folding ladder has a movable end portion having a damper block for damping the treading vibration.
According to the utility model discloses another preferred embodiment, the connecting end of turning over the folding ladder install in the height that the case was drawn to the side is greater than turn over half of folding ladder length.
According to the utility model discloses another preferred embodiment has a switch on the side draws the case, the switch electricity is connected the push rod motor, when the switch was opened, the push rod motor received a forward electric current, and push rod motor push rod extension, when the switch was closed, the push rod motor acquireed a reverse electric current, the push rod shrink of push rod motor.
According to the utility model discloses another preferred embodiment, it has a plurality of terraced pedals to turn over a ladder, an regulation pole is connected to the terraced pedal, two support sides have a locating piece respectively for adjust and fix a position terraced pedal face levelness.
According to another preferred embodiment of the present invention, the bottom of the folding ladder has an extension leg, and the two sides of the extension leg have locking screws respectively.
Drawings
Fig. 1 is a schematic front view of an electric folding ladder of the present invention;
fig. 2 is a left-side view of the electric folding ladder of the present invention;
fig. 3 is a right-view schematic diagram of the electric folding ladder of the present invention;
fig. 4 shows a schematic top view of the electric folding ladder of the present invention.
Wherein,
an electric folding ladder-10, a folding ladder-20, a bracket-21, a ladder pedal-22, an extension foot-23, an adjusting rod-24, a positioning piece-25, a connecting end-27, a rotary joint-28, a tension spring-30, a push rod motor-40, an opening key-51, a closing key-52 and a side draw box-60
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Referring to fig. 1-4, a front view of a preferred embodiment of an electric folding ladder 10 of the present invention is shown, wherein the electric folding ladder 10 includes a folding ladder 20, a push rod motor 40, and a tension spring 30, the folding ladder 20 is pivotally connected to the bottom of a side draw box 60 via hinges, the folding ladder 20 has two brackets 21, an adjusting rod 24 and a plurality of ladder steps 22, two edges of the ladder steps 22 are respectively rotatably connected to inner sides of the two brackets 21, the adjusting rod 24 is connected to one end of the ladder steps 22, the horizontal degree of the ladder steps 22 can be adjusted via the adjusting rod 24, furthermore, a positioning member 25 is respectively provided on sides of the two brackets 21, the positioning member 25 protrudes laterally from the two brackets 21, when the ladder steps 22 bear weight, the positioning member 25 limits the ladder steps 22 to move reversely, so that the step tread 22 remains horizontal.
Further, the push rod motor 40 is connected to the outer side of the bracket 21, specifically, two outer sides of the bracket 21 are respectively provided with a rotary joint 28, the pulling end of the tension spring 30 is connected with the rotary joint 28 of one bracket 21, the fixed end of the tension spring 30 is connected with the wall plate of the side draw box 60, the actuating end of the push rod motor 40 is connected with the rotary joint 28 on the outer side surface of the other bracket 21, for controlling the opening and closing of the brackets 21 on the side draw box 60, further, the rotary joint 28 is arranged at the connecting end 27 of the two brackets 21 near the two brackets 21, specifically, the distance from the connecting end 27 of the two brackets 21 to the rotary joint 28 is less than one third of the total length of the brackets 21, therefore, when the support 21 is in an open state, the support 21 can be stably placed by the fact that the opening angle of the support 21 is larger than the gravity of the support.
Further, the push rod motor 40 is connected to a control circuit, wherein the control circuit is provided with a switch on an outer wall plate of the side draw box 60, the connection end 27 is provided with a plug, the switch is provided with an opening key 51 and a closing key 52, when the plug is opened and the opening key 51 is started, the control circuit inputs a forward current to the push rod motor 40, the push rod motor 40 extends under the push of the forward current to drive the folding ladder 20 to open, when the opening angle of the folding ladder 20 is smaller than 10 °, the tension spring 30 has a certain tension to the folding ladder 20, and the folding ladder 20 itself has a gravity moment, but the push force of the push rod motor 40 is larger than the tension, the folding is gradually opened, when the opening angle of the folding ladder 20 is larger than 90 °, the gravity moment of the folding ladder 20 reaches the maximum, and the resultant force of the folding ladder 20 is larger than the tension of the tension spring 30 to the folding ladder 20, the push rod motor 40 is internally provided with a travel switch, when the movable end part of the folding ladder 20 forms an angle with the ground, the push rod motor 40 automatically turns off and operates, for example, the travel switch can be set to be in a state that when the folding ladder 20 forms a 60-degree angle with the ground, the push rod motor 40 stops operating, and at the moment, the moment of the tension spring 30 is smaller than the gravity moment, so that the folding ladder 20 cannot be tilted due to the tension spring 30.
The folding ladder 20 has an extension leg 23 at the movable end, in a preferred embodiment, the extension leg 23 is telescopically sleeved on the two supports 21, when the electric push is stopped, the extension leg 23 can be adjusted to enable the extension leg 23 to abut against the ground, it should be noted that the extension leg 23 has two locking screws for limiting the extension and retraction movement of the extension leg, further, a damping block is arranged at the bottom of the extension leg 23 for buffering the treading vibration, and an inclined edge is arranged at the bottom of the extension leg 23, and the inclined edge is attached to the ground.
It should be noted that when the close key 52 is pressed, the control circuit reversely supplies power to the push rod motor 40, so that the push rod motor 40 makes a contraction motion, the folding ladder 20 folds upward, at this time, the extension legs 23 can be folded, and the extension legs 23 are fixed by the locking screws, during the folding process, the push rod motor 40 and the tension spring 30 respectively have upward moment on the folding frame, which is greater than the gravity moment, until the folding ladder 20 is completely folded, and the corresponding plug pins are further inserted to fold and fix the folding ladder 20.
In order to better explain the technical effects of the present invention, the present invention provides a specific embodiment:
providing a folding ladder 20, wherein the weight of the folding ladder 20 is 28kg, and a tension gas spring is arranged on the left side of the folding ladder 20, the length of the tension gas spring is 840mm, the stroke is 350mm, and the tension is 1500N (Newton)
A push rod motor 40 with a length of 440mm, a stroke of 300mm and a stroke of 750N is installed on the right side of the folding ladder 20, and is used for controlling the folding of the folding ladder 20, and it should be noted that the center of gravity of the folding ladder 20 is located in the middle of the folding ladder 20.
When the folding ladder 20 is opened at an angle of 10 °, the torque generated by the push rod motor 40 is: cos10.6 ° × 750N × 59mm ═ 43509n.mm, the torque produced by the dead weight of the ladder 20 is: 280N 148mm 41440n.mm, the torsion generated by the tension gas spring is 1500 cos4.7 ° 43.2mm 64582n.mm, which makes the turnover bar pushed because of 43509n.mm +41440n.mm > 64582 n.mm.
If the opening angle of the folding ladder 20 is more than 90 degrees, the torque generated by the push rod motor 40 is cos18.6 degrees × 750N × 155.8mm equals 110746n.mm, the torque generated by the folding ladder 20 by self weight is 280 × 1020mm equals 285600n.mm, the torque generated by the tension gas spring is 1500 × cos12.5 degrees × 192mm × 43.2mm equals 281173n.mm, and the push rod motor 40 can push the ladder to turn down due to 110746n.mm > 285600n.mm-281173 n.mm.
When the folding ladder 20 is in a working state, the torque generated by the push rod motor 40 is: COS12 ° -750N-103 mm-75550 n.mm, the torque produced by the ladder's own weight is: 280N 686.6mm 192248n.mm, the torsion produced by the tension gas spring is: 1500 COS 8 ° -128 mm-190131 n.mm, we can derive: the 75550N.mm +192248N.mm > 190131N.mm ladder can be turned to the working condition, the 192248N.mm > 190131N.mm ladder will not turn up by oneself when stopping in the working condition, and the push rod motor 40 is not stressed.
It is understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention, the objects of which have been fully and effectively achieved, the functions and structural principles of which have been shown and described in the embodiments, and that the embodiments of the present invention may be modified or adapted without departing from said principles.
Claims (8)
1. The utility model provides an electronic ladder that rolls over, electronic ladder that rolls over is installed in the operation car of taking the side to draw the case, its characterized in that includes:
a folding ladder;
a tension spring;
a push rod motor;
the fixed end part of the tension spring is arranged on a side draw box wall plate, the tension end part of the tension spring is fixed on one side support of the folding ladder, the fixed end part of the push rod motor is arranged on the side draw box wall plate, the action end part of the push rod motor is arranged on the other side support of the folding ladder, the outer side surfaces of the two supports of the folding ladder are respectively provided with a rotary joint, and the tension end part of the tension spring and the action end part of the push rod motor are respectively and rotatably connected with the rotary joints.
2. The electric folding ladder as claimed in claim 1, wherein the rotary joints are disposed on the outer side of the two brackets near the connecting end of the folding ladder, and the distance from the rotary joints to the connecting end is less than one third of the length of the folding ladder.
3. An electrically powered folding ladder as claimed in claim 2, characterized in that the connecting end is embodied as a hinge, along which the ladder can be folded up and down.
4. The powered folding ladder of claim 1 wherein said folding ladder has a movable end portion with a shock absorbing mass for damping tread vibrations.
5. The electric folding ladder as claimed in claim 2, wherein the connecting end of the folding ladder is mounted to the side-pull box at a height greater than half the length of the folding ladder.
6. The electric folding ladder as claimed in claim 1, wherein a switch is provided on the side draw box, the switch is electrically connected to the push rod motor, when the switch is turned on, the push rod motor receives a forward current, the push rod of the push rod motor extends, when the switch is turned off, the push rod motor receives a reverse current, and the push rod of the push rod motor retracts.
7. The electric folding ladder as claimed in claim 1, wherein the folding ladder has a plurality of ladder steps, the ladder steps are connected with an adjusting rod, and the two brackets have a positioning member at the side for adjusting and positioning the levelness of the ladder steps.
8. The electric folding ladder as claimed in claim 1, wherein the folding ladder has an extension leg at the bottom thereof, and locking screws are provided at both sides of the extension leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020416329.7U CN212583598U (en) | 2020-03-27 | 2020-03-27 | Electric folding ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020416329.7U CN212583598U (en) | 2020-03-27 | 2020-03-27 | Electric folding ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212583598U true CN212583598U (en) | 2021-02-23 |
Family
ID=74656902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020416329.7U Expired - Fee Related CN212583598U (en) | 2020-03-27 | 2020-03-27 | Electric folding ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212583598U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113148918A (en) * | 2021-05-19 | 2021-07-23 | 青岛黄海学院 | Automatic extension ladder device for electrical installation and working method thereof |
-
2020
- 2020-03-27 CN CN202020416329.7U patent/CN212583598U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113148918A (en) * | 2021-05-19 | 2021-07-23 | 青岛黄海学院 | Automatic extension ladder device for electrical installation and working method thereof |
| CN113148918B (en) * | 2021-05-19 | 2022-06-03 | 青岛黄海学院 | Automatic extension ladder device for electrical installation and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210223 |