CN217269783U - Extensible cabin door ladder - Google Patents
Extensible cabin door ladder Download PDFInfo
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- CN217269783U CN217269783U CN202220903897.9U CN202220903897U CN217269783U CN 217269783 U CN217269783 U CN 217269783U CN 202220903897 U CN202220903897 U CN 202220903897U CN 217269783 U CN217269783 U CN 217269783U
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- ladder
- driver
- door
- door frame
- extendable
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Abstract
The utility model relates to the field of door ladders, in particular to an extensible cabin door ladder, which comprises a door frame, a first ladder and a first driver; one end of the first ladder is hinged with the bottom end of the door frame, and the door frame is horizontal to a hinged shaft of the first ladder; the first driver is arranged on the doorframe and the execution part of the first driver is in transmission connection with the first ladder, and the first driver is used for driving the first ladder to rotate downwards or upwards; the first ladder is provided with a second ladder. The utility model discloses an increase the second ladder on first ladder, the second ladder can extend, contract through rotatory or gliding mode to prolong or shorten the length of door ladder to a certain extent, when having solved the mounting height change in current experiment cabin, its door ladder can not fall to the ground or can not open the technical problem completely.
Description
Technical Field
The utility model relates to a door ladder field, concretely relates to cabin door ladder that can extend.
Background
At present, a plurality of experimental cabins need to be placed on transportation tools such as ships, automobiles, airplanes and the like, and the experimental cabins need good cabin door structures and also need passages for people and goods to enter and exit.
In order to achieve the above object, CN201820708528.8 (a cabin door and ladder integrated mechanism) discloses a structure that a ladder is arranged at a cabin door, thereby solving the problems of cabin sealing and personnel entering and exiting, but it has the following disadvantages:
the length of the door ladder is fixed, and if the height of the experiment chamber is increased when the experiment chamber is transferred from the ground to the light truck or from the light truck to the heavy truck, workers need to face the embarrassment that the bottom of the ladder cannot land after the door ladder is unfolded.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an extensible cabin door ladder to solve
In order to solve the above technical problem, the utility model particularly provides the following technical scheme:
the utility model provides an extensible cabin door ladder, which comprises a door frame, a first ladder and a first driver; one end of the first ladder is hinged with the bottom end of the door frame, and the door frame is horizontal to a hinged shaft of the first ladder; the first driver is arranged on the door frame and the execution part of the first driver is in transmission connection with the first ladder, and the first driver is used for driving the first ladder to rotate downwards or upwards; a second ladder is arranged on the first ladder; one end of the second ladder is hinged with one end of the first ladder far away from the door frame; or the second ladder is connected with the first ladder in a sliding mode, and the sliding direction of the second ladder is parallel to the length direction of the first ladder.
Preferably, the first actuator includes a link and a linear actuator, the linear actuator being installed on the door frame, the linear actuator having an actuating portion moving in a vertical direction, one end of the link being hinged to the first ladder, and the other end of the link being hinged to the actuating portion of the linear actuator.
Preferably, the connection is rigid.
Preferably, the connectors and the linear actuators each have 2 and are respectively provided on both sides of the first ladder.
Preferably, the linear actuator comprises a slide rail vertically mounted on the door frame; the sliding block is slidably arranged on the sliding rail, a nut is fixedly arranged on the sliding block, and the axis of the nut is vertically arranged; the screw rod is inserted in the nut and is in threaded connection with the nut; and the motor is arranged on the door frame, and the execution part of the motor is in transmission connection with the screw rod, and the motor is used for driving the screw rod to rotate.
Preferably, slide rail, slider, nut and screw rod all have 2 and set up respectively in the both sides of first ladder, and horizontal installation has the transmission shaft on the door frame, and the execution portion and the transmission shaft transmission of motor are connected, and gear drive mechanism is all installed to the one end of every screw rod to the screw rod passes through gear drive mechanism and is connected with the transmission shaft transmission.
Preferably, the first ladder is provided with a second driver which is in transmission connection with the execution part and the second ladder, and the second driver is used for driving the second ladder to rotate or slide.
Preferably, a first door cover is installed on the first ladder, and the first door cover covers the door frame when the first ladder rotates upwards to the stroke end.
According to another aspect of the application, a second door cover and a third driver are installed on the door frame, one end of the second door cover is hinged to the top end of the door frame, an executing part of the third driver is in transmission connection with the second door cover, and the third driver is used for driving the second door cover to rotate downwards or upwards.
Preferably, the third driver is an electric telescopic rod, the non-actuating part of the third driver is rotatably mounted on the door frame, and the actuating part of the third driver is hinged with the second door cover.
This application compares with prior art and has following beneficial effect:
this application is through increasing the second ladder on first ladder, and the second ladder can extend, contract through rotatory or gliding mode to lengthen or shorten the length of door ladder to a certain extent, when having solved the mounting height of current experiment cabin and having changed, its door ladder can not fall to the ground or can not open the technical problem completely.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic view of a cabin door ladder according to an embodiment of the present invention in a half-opened state;
fig. 2 is a schematic view of a fully opened state of a cabin door ladder according to an embodiment of the present invention;
fig. 3 is a schematic view of a half-closed state of a cabin door ladder according to an embodiment of the present invention;
fig. 4 is a schematic view of a fully closed state of a cabin door ladder according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of the cabin door ladder according to the embodiment of the present invention after hiding the second door cover and the third driver;
fig. 6 is a schematic structural diagram of a second door cover and a third driver provided in an embodiment of the present invention;
the reference numerals in the drawings denote the following, respectively:
1-a door frame;
2-a first ladder;
3-a first driver; 3 a-a connector; 3 b-a slide rail; 3 c-a slide block; 3 d-screw; 3 e-a motor; 3 f-a transmission shaft; 3 g-gear drive;
4-a first door cover;
5-a second ladder;
6-a second door cover;
7-third driver.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-6, the present application provides:
an extendable cabin door ladder comprising a door frame 1, a first ladder 2 and a first drive 3; one end of the first ladder 2 is hinged with the bottom end of the door frame 1, and the door frame 1 is horizontal to a hinged shaft of the first ladder 2; the first driver 3 is arranged on the doorframe 1 and the execution part of the first driver is in transmission connection with the first ladder 2, and the first driver 3 is used for driving the first ladder 2 to rotate downwards or upwards; a second ladder 5 is arranged on the first ladder 2; one end of the second ladder 5 is hinged with one end of the first ladder 2 far away from the doorframe 1; or the second ladder 5 is connected with the first ladder 2 in a sliding way, and the sliding direction of the second ladder 5 is parallel to the length direction of the first ladder 2.
Based on the above embodiments, the technical problem that the present application intends to solve is how to make the length of the door ladder adjustable.
For this purpose, the second ladder 5 is added on the first ladder 2, and the second ladder 5 can be extended and contracted in a rotating or sliding mode, so that the length of the door ladder is prolonged or shortened to a certain extent.
Further:
the first actuator 3 includes a link 3a installed on the doorframe 1 and a linear actuator having an actuating portion moving in a vertical direction, one end of the link 3a being hinged to the first ladder 2 and the other end of the link 3a being hinged to the actuating portion of the linear actuator.
Based on the above-mentioned embodiments, the technical problem that the present application intends to solve is how the first driver 3 drives the first ladder 2 to rotate downward or upward.
For this reason, this application drives the one end lift of connecting piece 3a through the execution portion of linear actuator, and the other end of connecting piece 3a pulls first ladder 2 and makes first ladder 2 encircle itself and do circular motion with the articulated shaft of door frame 1.
The first actuator 3 may be a combination of a motor and a decelerator as long as it can drive the first ladder 2 to rotate around its hinge axis with the door frame 1.
Further:
the connecting piece 3a is rigid.
In particular, the link 3a is a metal rod, and when the actuator of the linear actuator is lowered, the link 3a pushes the first ladder 2 outwards.
If the connecting member 3a is a wire rope, the first ladder 2 can still be opened by its own weight when the actuating portion of the linear actuator is lowered in a normal condition, but when the cabin is located on an uneven road surface and the first ladder 2 is inclined toward the cabin, the first ladder 2 cannot be opened by itself.
Further:
the connectors 3a and the linear actuators each have 2 and are respectively provided on both sides of the first ladder 2.
Based on the above embodiment, the rotational opening and closing of the first ladder 2 is more smooth, and the first actuator 3 does not obstruct the entrance and exit of the worker into and out of the doorframe 1.
Further:
the linear actuator comprises a slide rail 3b vertically mounted on the door frame 1; the sliding block 3c is slidably mounted on the sliding rail 3b, a nut (not shown in the figure) is fixedly mounted on the sliding block 3c, and the axis of the nut is vertically arranged; and a screw rod 3d inserted inside the nut and screwed with the nut; and a motor 3e which is arranged on the doorframe 1 and the actuating part of which is in transmission connection with the screw rod 3d, wherein the motor 3e is used for driving the screw rod 3d to rotate.
Based on the above-described embodiments, the technical problem that the present application intends to solve is how to make a linear drive have an actuator that moves in a vertical direction.
For this reason, the present application uses the slider 3c as an executing portion of the linear actuator, and when the motor 3e drives the screw rod 3d to rotate, the nut cannot rotate, so the nut drives the slider 3c to vertically slide along the slide rail 3 b.
Further:
Based on the above-described embodiment, the technical problem that the present application intends to solve is how to reduce the number of motors 3e on the premise that the first driver 3 has two.
Therefore, the transmission mechanism which is in transmission connection with the output shaft of 1 motor 3e and 2 screw rods 3d is formed by combining the transmission shaft 3f and the gear transmission mechanism 3g, the output shaft of the motor 3e drives the transmission shaft 3f to rotate, the transmission shaft 3f drives the 2 screw rods 3d to rotate through the 2 gear transmission mechanisms 3g respectively, and the gear transmission mechanism 3g is a bevel gear reducer or a worm gear reducer.
Further:
the first ladder 2 is provided with a second driver (not shown) which is connected with the execution part in a transmission way with the second ladder 5, and the second driver is used for driving the second ladder 5 to rotate or slide.
Based on the above-described embodiment, the technical problem that the present application intends to solve is how to cause the second ladder 5 to automatically extend.
For this reason, this application passes through the rotatory expansion of motor drive second ladder 5, perhaps slides flexible through electric telescopic handle drive second ladder 5.
Further:
a first door cover 4 is arranged on the first ladder 2, and the first door cover 4 covers the doorframe 1 when the first ladder 2 rotates upwards to the end of the travel.
And further:
the door frame 1 is provided with a second door cover 6 and a third driver 7, one end of the second door cover 6 is hinged with the top end of the door frame 1, an execution part of the third driver 7 is in transmission connection with the second door cover 6, and the third driver 7 is used for driving the second door cover 6 to rotate downwards or upwards.
With respect to the first door cover 4 and the second door cover 6, there are three alternatives, respectively:
in the first embodiment, only the first door 4 is provided, which has the advantage of low manufacturing cost and does not need to design a separate opening and closing device for the door.
And in the second scheme, only the second door cover 6 and the third driver 7 are arranged, so that the length of the ladder is more flexible, and the height of the door frame 1 does not need to be considered.
Scheme three, have first door closure 4, second door closure 6 and third driver 7 simultaneously, its advantage lies in, the arrangement of door closure is more nimble, in this embodiment, through the latter half of first door closure 4 switching door frame 1, then install a second door closure 6 on door frame 1 again, use third driver 7 drive second door closure 6 switching door frame 1's the first half, so can make the height of door frame 1 and the length of first ladder 2 can design and make according to actual need, need not to consider the leakproofness performance of door closure to door frame 1.
Further:
the third driver 7 is an electric telescopic rod, a non-execution part of the third driver 7 is rotatably arranged on the door frame 1, and an execution part of the third driver 7 is hinged with the second door cover 6.
Specifically, the third actuator 7 is an electric push rod, and the extension and retraction of the third actuator 7 can drive the second door cover 6 to rotate around the hinge shaft of the second door cover and the door frame 1.
Preferably, the third drivers 7 have 2 and are respectively disposed at both sides of the second door 6, thereby making opening and closing of the second door 6 more smooth.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (10)
1. An extendable cabin door ladder comprising a door frame (1), a first ladder (2) and a first drive (3);
one end of the first ladder (2) is hinged with the bottom end of the door frame (1), and the hinged shaft of the door frame (1) and the first ladder (2) is horizontal;
the first driver (3) is arranged on the door frame (1) and the execution part of the first driver is in transmission connection with the first ladder (2), and the first driver (3) is used for driving the first ladder (2) to rotate downwards or upwards;
it is characterized in that the preparation method is characterized in that,
a second ladder (5) is arranged on the first ladder (2);
one end of the second ladder (5) is hinged with one end of the first ladder (2) far away from the doorframe (1); or
The second ladder (5) is connected with the first ladder (2) in a sliding mode, and the sliding direction of the second ladder (5) is parallel to the length direction of the first ladder (2).
2. An extendable hatch ladder as defined in claim 1,
the first driver (3) comprises a connecting piece (3a) and a linear driver, the linear driver is installed on the door frame (1), the linear driver is provided with an executing part moving along the vertical direction, one end of the connecting piece (3a) is hinged with the first ladder (2), and the other end of the connecting piece (3a) is hinged with the executing part of the linear driver.
3. An extendable hatch ladder as claimed in claim 2,
the connecting piece (3a) is rigid.
4. An extendable hatch ladder as claimed in claim 2,
the connecting pieces (3a) and the linear drivers are 2 and are respectively arranged on two sides of the first ladder (2).
5. An extendable hatch ladder as claimed in claim 2,
the linear driver comprises
A sliding rail (3b) vertically mounted on the door frame (1); and
the sliding block (3c) is slidably mounted on the sliding rail (3b), a nut is fixedly mounted on the sliding block (3c), and the axis of the nut is vertically arranged; and
a screw rod (3d) inserted inside the nut and screwed with the nut; and
and the motor (3e) is mounted on the door frame (1) and is in transmission connection with the screw rod (3d) at an execution part of the motor, and the motor (3e) is used for driving the screw rod (3d) to rotate.
6. An extendable hatch door ladder according to claim 5,
slide rail (3b), slider (3c), nut and screw rod (3d) all have 2 and set up respectively the both sides of first ladder (2), horizontal installation has transmission shaft (3f) on door frame (1), the execution portion of motor (3e) with transmission shaft (3f) transmission is connected, every gear drive (3g) are all installed to the one end of screw rod (3d), and screw rod (3d) pass through gear drive (3g) with transmission shaft (3f) transmission is connected.
7. An extendable cabin door ladder according to any one of claims 1 to 6,
and a second driver which is used for driving the second ladder (5) to rotate or slide is arranged on the first ladder (2), and an execution part of the second driver is in transmission connection with the second ladder (5).
8. An extendable hatch ladder as defined in claim 1,
a first door cover (4) is installed on the first ladder (2), and when the first ladder (2) rotates upwards to the end point of the stroke, the first door cover (4) covers the door frame (1).
9. An extendable hatch door ladder according to claim 1 or 8,
install second door closure (6) and third driver (7) on door frame (1), the one end of second door closure (6) with the top of door frame (1) is articulated, the execution portion of third driver (7) with second door closure (6) transmission is connected, third driver (7) are used for the drive second door closure (6) are downward or upwards rotated.
10. An extendable hatch ladder as defined in claim 9,
the third driver (7) is an electric telescopic rod, a non-execution part of the third driver (7) is rotatably arranged on the door frame (1), and an execution part of the third driver (7) is hinged with the second door cover (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220903897.9U CN217269783U (en) | 2022-04-19 | 2022-04-19 | Extensible cabin door ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220903897.9U CN217269783U (en) | 2022-04-19 | 2022-04-19 | Extensible cabin door ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217269783U true CN217269783U (en) | 2022-08-23 |
Family
ID=82876822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220903897.9U Active CN217269783U (en) | 2022-04-19 | 2022-04-19 | Extensible cabin door ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217269783U (en) |
-
2022
- 2022-04-19 CN CN202220903897.9U patent/CN217269783U/en active Active
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