CN211642033U - Up-down telescopic cab stepping mechanism - Google Patents

Abstract

The utility model relates to a commercial car discloses an upper and lower retractable driver's cabin mechanism of marking time, including fixed subassembly of marking time, activity mark time and drive assembly. The fixed stepping assembly is configured to be fixedly assembled on the cab; the movable steps can move up and down and are arranged at the lower part of the fixed step assembly in a limited distance; the drive assembly sets up on the fixed subassembly of marking time, and drive assembly's output is connected on the activity is marked time, and drive assembly can drive the activity and mark time and reciprocate in accomodating position and use the position. The utility model discloses an activity of upper and lower retractable driver's cabin mechanism of marking time is marked time and is portable in accomodating the position and using the position under drive assembly's drive, and the activity is marked time and is located using the position when the user uses, and the activity is marked time and is located accomodating the position when the user does not use, and then can avoid the damage of colliding with, and convenient to use to make the security that the user got on or off the bus obtain the guarantee.

Description

Up-down telescopic cab stepping mechanism

Technical Field

The utility model relates to a commercial car technical field especially relates to an upper and lower retractable driver's cabin mechanism of marking time.

Background

In the existing market, some engineering commercial vehicles have huge body sizes, a cab is higher than the ground, and a stepping mechanism is generally required to be assembled to assist a user to enter the cab. Generally, the stepping mechanism is provided with a plurality of steps from top to bottom.

At present, the lowest stage of the stepping mechanism applied to engineering commercial vehicles mostly adopts a movable stepping structure, and the movable stepping structure only changes a fixed shaft above the movable stepping structure into a rotating shaft on the basis of original fixed stepping, can only realize small-angle horizontal rotation, but cannot realize up-and-down contraction movement. For engineering commercial vehicles, such as dump trucks, the working conditions are very severe, and the passing requirement for the vehicles is extremely high. Therefore, the lowest step of the stepping mechanism is often damaged due to the fact that the step is close to the ground, and the use is affected due to serious damage. Some users change the step time of the lowest level by oneself to shorten or directly demolish for convenient to use, and then avoid the damage of the step time of the lowest level in the use. However, shortening or removing the step at the lowest stage of the cab increases the difficulty of getting on the vehicle for the user, and is inconvenient to use, and the safety of getting on or off the vehicle for the user cannot be guaranteed.

Therefore, it is highly desirable to provide an up-down retractable cab stepping mechanism, which can avoid damage caused by collision, is convenient to use, and ensures the safety of getting on or off the vehicle by a user.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an upper and lower retractable driver's cabin mechanism of marking time can avoid the damage of colliding with, and convenient to use to make the security that the user got on and off the bus obtain the guarantee.

To achieve the purpose, the utility model adopts the following technical proposal:

an up-down retractable cab step mechanism, comprising:

a fixed tread assembly configured to be fixedly mounted on the cab;

the movable step can move up and down and is arranged at the lower part of the fixed step component with a limited distance;

the drive assembly set up in on the fixed subassembly of marking time, just drive assembly's output connect in on the activity is marked time, drive assembly can drive the activity is marked time and is reciprocated in accomodating the position and using the position.

Optionally, the drive assembly comprises:

the output end of the linear driving piece is connected to the movable step so as to drive the movable step to move up and down in the storage position and the use position;

and the control piece is used for controlling the linear driving piece to work, and a switch arranged on the control piece is positioned on a vehicle door of the cab.

Optionally, the switch is located on a side of the door and is arranged opposite to a door frame of the cab; when the vehicle door is closed, the switch is abutted against the vehicle door frame, so that the linear driving piece drives the movable step to move to a storage position; when the door is opened, the switch is far away from the door frame, so that the linear driving piece drives the movable step to move to a use position.

Optionally, the up-down retractable cab step mechanism further comprises:

one end of the extension spring is connected to the movable step, the other end of the extension spring is connected to the fixed step assembly, and the extension spring can pull the movable step through elastic force so that the main body of the movable step keeps stopping at the containing position.

Optionally, be provided with first shock pad on the lower surface of fixed subassembly of marking time, first shock pad is just right the activity is marked time, the activity is marked time and is located when accomodating the position, first shock pad can support and lean on in the activity is marked time.

Optionally, the fixed tread assembly comprises:

a first stationary step configured to be fixedly mounted on the cab;

a second fixing step configured to be fixedly mounted on the cab and located below the first fixing step in a vertical direction.

Optionally, the activity step comprises:

the movable step body is positioned below the second fixed step;

the two ends of the movable mark time body are respectively provided with one limiting clamping plate, when the movable mark time body is located at the use position, the upper ends of the two limiting clamping plates are hung on the second fixed mark time to limit the movable mark time body.

Optionally, the spacing cardboard includes:

a connecting plate;

the limiting plate, the one end of connecting plate is connected the activity body of marking time, and the other end is connected the limiting plate, just the limiting plate is located the fixed top of marking time of second, the lower surface of limiting plate can press in the fixed upper surface of marking time of second, in order to with the activity body of marking time is spacing in the position of using.

Optionally, a second shock pad is arranged on the lower surface of the limiting plate.

Optionally, the first fixed step, the second fixed step and the movable step body are all in a grid plate-shaped structure.

The utility model has the advantages that:

the utility model discloses a drive assembly drive activity is marked time and is reciprocated in accomodating position and use position. When the user uses, the activity is marked time and is moved down and berth in the position of using, and then makes the user can step on the activity and mark time and fix the subassembly of marking time and step on the driver's cabin, makes the security that the user got on and off the bus obtain the guarantee. When the user does not use, the drive assembly drive activity is marked time the rebound and is berthhed at and accomodate the position, and then can avoid under the abominable operating mode to the damage of colliding with of activity marking time, its simple structure, convenient to use.

Drawings

FIG. 1 is a schematic structural view of the up-down retractable type cab step mechanism of the present invention when the movable steps are located at the use position;

FIG. 2 is a schematic structural view of the up-down retractable type cab step mechanism according to the present invention when the movable steps are located at the storage positions;

FIG. 3 is a schematic diagram of the movable step of the retractable cab step mechanism of the present invention;

FIG. 4 is a schematic structural view of a first fixed step of the up-down retractable cab step mechanism provided by the present invention;

FIG. 5 is a schematic structural view of a second fixed step of the up-down retractable cab step mechanism provided by the present invention;

fig. 6 is a driving operation schematic diagram of the linear driving member of the up-down retractable cab stepping mechanism of the present invention.

In the figure:

1-fixing the stepping assembly; 11-a first fixed step; 111-a drive assembly connection; 112-extension spring connection; 12-a second fixed step; 2, moving to step; 21-movable step body; 22-a limit catch plate; 221-connecting plate; 222-a limiting plate; 223-a drive assembly connection plate; 224-extension spring connecting plate; 3-a drive assembly; 31-a linear drive; 32-a power supply; 33-a switch; 34-an electrically controlled valve; 4-extension spring; 5-a first cushion; 6-second shock pad.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1-2, the up-down retractable cab step mechanism provided in this embodiment is mainly assembled on a large-sized engineering commercial vehicle, so as to facilitate the user to get in and out of the cab. The up-down telescopic cab step mechanism mainly comprises a fixed step component 1, a movable step 2 and a driving component 3. The fixed stepping assembly 1 is configured to be fixedly mounted on a cab (not shown in the figure); the movable step 2 can move up and down and is arranged at the lower part of the fixed step component 1 with a limited distance; drive assembly 3 sets up on fixed marking time subassembly 1, and drive assembly 3's output is connected on the activity is marked time 2, and drive assembly 3 can drive the activity and mark time 2 and reciprocate and take in the position and use the position. Wherein, use the position to indicate when the user need use the activity to mark time 2, the activity is marked time 2 and is moved down the position of berthhing after, accomodates the position and indicates when the user need not use the activity to mark time 2, the activity is marked time 2 and is moved up the position of berthhing after.

The movable step 2 is driven by the driving component 3 to move up and down in the storage position and the use position. When the user uses, the driving component 3 drives the movable steps 2 to move downwards and stop at the use position, so that the user can step on the movable steps 2 and the fixed step components 1 to get on the cab, and the safety of getting on or off the vehicle by the user is guaranteed. When the user does not use, 2 rebound and berth in accomodating the position are marked time in the drive of drive assembly 3 drive activity, and then make the activity mark time 2 and keep away from ground, avoid marking time 2 under the abominable operating mode to the activity damage of colliding with, its simple structure, convenient to use.

Specifically, as shown in fig. 1, in the present embodiment, the fixing step assembly 1 includes a first fixing step 11 and a second fixing step 12. The first fixing step 11 and the second fixing step 12 are respectively fixedly assembled on the cab, and the second fixing step 12 is located below the first fixing step 11 along the vertical direction. The first fixing step 11 and the second fixing step 12 are fixedly assembled on the cab and the distance therebetween is not adjustable, and the first fixing step 11 and the second fixing step 12 can be fixed on the cab in a practical fixing mode through bolt fixing or welding.

The movable step 2 comprises a movable step body 21 and two limiting clamping plates 22, and the movable step body 21 and the two limiting clamping plates 22 are integrally formed. The movable step body 21 is located below the second fixed step 12. The both ends of the body 21 are marked time in the activity are provided with a spacing cardboard 22 respectively, when the body 21 is marked time in the activity is located the position of use, the upper end of two spacing cardboards 22 is hung and is leaned on the fixed body 21 of marking time in the second with spacing activity, spacing cardboard 22 provides the support for the body 21 is marked time in the activity, make the activity body 21 of marking time hang and lean on and mark time 12 in the second is fixed, guaranteed that the activity is marked time 2 and can be reliable and stable berth in the position of use, bear the weight that the user stepped on when. Specifically, as shown in fig. 2 to 3, the limit catch plate 22 includes a connecting plate 221 and a limit plate 222. The activity body of marking time 21 is connected to the one end of connecting plate 221, and the limiting plate 222 is connected to the other end of connecting plate 221, and the limiting plate 222 is located the fixed top of marking time 12 of second, and the lower surface of limiting plate 222 can press in the fixed upper surface of marking time 12 of second to mark the body 21 spacing in the position of using with the activity, its simple structure can guarantee that the activity is marked time 2 reliable and stable berths in the position of using.

Further, as shown in fig. 1-2, in the present embodiment, the shapes of the first fixed step 11, the second fixed step 12 and the movable step body 21 are all grid plate-shaped structures, and the specific shapes are all long plate-shaped, the grid plate-shaped structures can reduce the weight while ensuring the strength and the rigidity, and the design of the grid can increase the surface friction force, thereby playing the role of skid resistance.

And when making activity 2 marked time be located the position of accomodating, activity marked time 2 self position can not rock at will again, and then keeps berthhing on accomodating the position. As shown in fig. 2, in the present embodiment, the up-down retractable cab step mechanism further includes an extension spring 4. One end of the extension spring 4 is connected to the movable step 2, the other end of the extension spring 4 is connected to the fixed step assembly 1, and the extension spring 4 can pull the movable step 2 through elastic force so as to enable the main body of the movable step 2 to be kept stopped at the storage position, and the extension spring 4 does not need to be arranged in other implementations.

Specifically, as shown in fig. 3 to 4, in the present embodiment, an extension spring connecting plate 224 is disposed at one end of the movable step body 21 of the movable step 2, an extension spring connecting portion 112 is disposed on a lower surface of the first fixed step 11 corresponding to one end of the extension spring connecting plate 224, one end of the extension spring 4 is hung on the extension spring connecting plate 224, and the other end of the extension spring 4 is hung on the extension spring connecting portion 112.

Further, when the movable step 2 moves from the use position to the storage position, the impact of the movable step 2 on the fixed step assembly 1 is reduced. As shown in fig. 5, in the embodiment, the first cushion pad 5 is disposed on the lower surface of the fixed step assembly 1, the first cushion pad 5 faces the movable step 2, and when the movable step 2 is located at the storage position, the first cushion pad 5 can abut against the movable step 2. In other embodiments, the first cushion 5 may not be designed.

When the movable step 2 moves from the storage position to the use position, in order to reduce the impact of the limit plate 222 on the upper surface of the fixed second fixed step 12, as shown in fig. 3, in this embodiment, the lower surface of the limit plate 222 is provided with a second cushion 6. In other embodiments, the second cushion 6 may not be designed. In this implementation, the first and second shock absorbing pads 5 and 6 are designed to play multiple roles of vibration reduction, wear reduction, noise reduction and the like.

In order to drive the movable step 2 to move up and down, as shown in fig. 2 and 6, the driving assembly 3 includes a linear driving member 31 and a control member in the present embodiment. Wherein, linear drive 31 sets up vertically on fixed subassembly 1 of marking time, and linear drive 31's output is connected on activity is marked time 2 to the drive activity is marked time 2 and is reciprocated in accomodating the position and using the position. The control member is used for controlling the work of the linear driving member 31, the switch 33 arranged on the control member is positioned on the door of the cab, and the work of the linear driving member 31 can be controlled by opening and closing the switch 33.

For the specific installation of the linear driving member 31, as shown in fig. 3-4, the end surface of the first fixed step 11 along the length direction is provided with a driving assembly connecting portion 111, the end of the step body 21 along the length direction is provided with a driving assembly connecting plate 223, the driving assembly connecting plate 223 is just opposite to the position below the driving assembly connecting portion 111, the main body of the linear driving member 31 is fixedly connected to the driving assembly connecting portion 111 through a bolt, the output end of the linear driving member 31 is fixedly connected to the driving assembly connecting plate 223 through a bolt, and the linear driving member is fixed through a bolt connection mode. The linear driving member 31 can be an air cylinder, a hydraulic cylinder, an electric cylinder or other mechanical structures, and has the main function of driving the movable step 2 to move up and down at the use position and the storage position, because the commercial vehicle mostly adopts air pressure braking, the linear driving member 31 of the embodiment is a linear air cylinder, and the maximum stroke of the linear air cylinder can meet the requirement of conveying the movable step body 21 to the use position, and the limiting plate 222 can be pressed against the second fixed step 12 by entering.

Since the linear driving member 31 of the present embodiment is a linear cylinder, for a specific control structure of the control member, as shown in fig. 6, in the present embodiment, the control member further includes a power source 32, a solenoid valve 34, and a high-pressure air source (not shown in the figure, the high-pressure air source may be a high-pressure air tank storing high-pressure air). Wherein the power source 32, the switch 33 and the solenoid valve 34 are electrically connected in sequence to form a circuit, the switch 33 is an elastic button type switch mounted on the side of the door, and the switch 33 is disposed right opposite to the door frame (not shown in the figure). High-pressure air source and linear driving piece 31 and solenoid valve 34 then communicate each other through the atmospheric pressure pipeline, and solenoid valve 34 includes first position route and second position route, then drives the output of linear driving piece 31 and stretch out when first position route communicates high-pressure air source, then drives the output shrink of linear driving piece 31 when second position route communicates high-pressure air source.

When the door is closed on the door frame, the switch 33 on the side of the door can be pressed against the door frame, so that the switch 33 is turned off, and the linear driving member 31 drives the movable step 2 to move to the storage position. When the door is opened, the switch 33 on the side of the door can be far away from the door frame, so that the switch 33 is closed, and the linear driving piece 31 drives the movable step 2 to move to the use position.

Specifically, when the door is closed, the switch 33 on the side of the door is pressed against the door frame, the switch 33 is disconnected, the high-pressure gas source delivers the high-pressure gas to the linear driving part 31 through the second position passage of the electromagnetic valve 34 and the gas pressure pipeline, the output end of the linear driving part 31 contracts, and then the movable step 2 is moved to be stored. When the door is opened, switch 33 on the side of door can keep away from the door frame, and switch 33 is closed, and high-pressure gas supplies gives linear driving piece 31 with high-pressure gas through the first position passageway of solenoid valve 34 and pneumatic tube way, and the output of linear driving piece 31 stretches out, and then promotes the activity and marks time 2 and remove to the position of using.

In this embodiment, the installation position of the switch 33 is specifically set on the side of the door, and is just set up for the door frame, and the opening and closing of the switch 33 is controlled by the opening and closing of the door to enter the work of the linear driving member 31, so that the user can more conveniently control the movable step 2 to move up and down.

In other embodiments, the switch 33 may also be directly mounted on the outer wall of the vehicle door, and the switch 33 is turned on and off by manual pressing of a user, so that the up-and-down movement of the moving step 2 can be electrically controlled more conveniently, and the mounting position of the switch 33 can be specifically selected according to the use requirement. And this embodiment controls the opening and closing of the switch 33 through the opening and closing of the door, so that the user does not need to press the switch 33 alone, and the operation is simpler and more convenient.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (10)

1. The utility model provides a mechanism of stepping on of upper and lower retractable driver's cabin which characterized in that includes:

a stationary tread assembly (1) configured to be fixedly mounted on a cab;

the movable step (2) can move up and down and is arranged at the lower part of the fixed step assembly (1) with a limited distance;

drive assembly (3), set up in on the fixed subassembly (1) of marking time, just the output of drive assembly (3) connect in the activity is marked time (2) on, drive assembly (3) can drive the activity is marked time (2) and is reciprocated in accomodating the position and using the position.

2. The upper and lower telescoping cab step mechanism of claim 1, wherein the drive assembly (3) comprises:

the linear driving piece (31) is vertically arranged on the fixed stepping assembly (1), and the output end of the linear driving piece (31) is connected to the movable stepping (2) so as to drive the movable stepping (2) to move up and down at the storage position and the use position;

and the control part is used for controlling the operation of the linear driving part (31), and a switch (33) arranged on the control part is positioned on a door of the cab.

3. The vertical telescopic cab stepping mechanism according to claim 2, wherein the switch (33) is located on a side edge of the door and is disposed right opposite to a door frame of the cab; when the vehicle door is closed, the switch (33) abuts against the vehicle door frame, so that the linear driving piece (31) drives the movable step (2) to move to a storage position; when the vehicle door is opened, the switch (33) is far away from the vehicle door frame, so that the linear driving piece (31) drives the movable step (2) to move to a use position.

4. The up-down telescoping cab stepping mechanism of claim 1 further comprising:

extension spring (4), its one end connect in on the activity is marked time (2), the other end connect in on the fixed subassembly of marking time (1), extension spring (4) can pass through the elasticity pulling the activity is marked time (2), so that the main part that the activity was marked time (2) keeps stopping in accomodate the position.

5. The up-down retractable cab stepping mechanism of claim 1, wherein a first shock pad (5) is disposed on a lower surface of the fixed stepping assembly (1), the first shock pad (5) is opposite to the movable stepping (2), and when the movable stepping (2) is located at the storage position, the first shock pad (5) can abut against the movable stepping (2).

6. The vertical telescoping cab step mechanism as claimed in claim 1, wherein the stationary step assembly (1) comprises:

a first fixed step (11) configured to be fixedly mounted on the cab;

a second fixing step (12) configured to be fixedly mounted on the cab and located vertically below the first fixing step (11).

7. The upper and lower retractable cab step mechanism of claim 6, wherein the active step (2) comprises:

the movable step body (21) is positioned below the second fixed step (12);

the two ends of the movable stepping body (21) are respectively provided with one limiting clamping plate (22), when the movable stepping body (21) is located at a use position, the upper ends of the two limiting clamping plates (22) are hung on the second fixed stepping (12) to limit the movable stepping body (21).

8. The up-down retractable cab stepping mechanism of claim 7, wherein the stop catch plate (22) comprises:

a connecting plate (221);

the limiting plate (222), the activity body of marking time (21) is connected to the one end of connecting plate (221), the other end is connected limiting plate (222), just limiting plate (222) is located the top of the fixed mark time (12) of second, the lower surface of limiting plate (222) can press in the upper surface of the fixed mark time (12) of second, in order to with the activity body of marking time (21) is spacing in the position of using.

9. The vertical telescopic cab stepping mechanism according to claim 8, wherein a second cushion (6) is provided on a lower surface of the stopper plate (222).

10. The up-down retractable cab step mechanism of claim 7, wherein the first fixed step (11), the second fixed step (12) and the movable step body (21) are all in the shape of a grid plate-like structure.

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