CN212154629U

CN212154629U - Engineering machinery and ladder for ascending and descending

Info

Publication number: CN212154629U
Application number: CN202020716760.3U
Authority: CN
Inventors: 杨浩; 苗楠楠; 李长杰
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2020-05-01
Filing date: 2020-05-01
Publication date: 2020-12-15
Anticipated expiration: 2030-05-01

Abstract

The utility model relates to an install the technical field of the ladder on the vehicle, particularly, relate to a ladder and engineering machine tool about engineering machine tool. The engineering machinery upper and lower ladder comprises a ladder body and a rotary driving device, wherein the rotary driving device is connected with the ladder body and used for driving the ladder body to be switched between a vertical state and a horizontal state through a first rotating axis, and the first rotating axis extends outwards along the lateral direction of a vehicle body. The utility model provides an engineering machine tool inconvenient technical problem of getting on or off the bus, reached the technological effect who improves the convenience that the driver stepped on the bus.

Description

Engineering machinery and ladder for ascending and descending

Technical Field

The utility model relates to an install the technical field of the ladder on the vehicle, particularly, relate to a ladder and engineering machine tool about engineering machine tool.

Background

At present, escalators for getting on and off a cab of an excavator are too simple and mainly comprise door handle handrails on two sides of the cab and pedals arranged on a get-off track frame. The pedals are arranged on the track frame of the lower vehicle and limited by parts such as the loading wheels, the riding wheels, the tracks and the like, and cannot be randomly arranged, so that the pedals cannot be comfortable and suitable for the action of getting on the engineering machinery. Particularly, for a large excavator, due to the fact that the position of a cab is too high, the pedal is not suitable in the simple combination of a doorknob handrail and the pedal, the use is inconvenient, and serious potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an engineering machine is ladder and engineering machine tool from top to bottom can solve the engineering machine tool inconvenient technical problem of getting on and off the bus that prior art provided.

In a first aspect, the utility model provides an engineering machine tool goes up and down ladder, including ladder body and rotary drive device, rotary drive device with this body coupling of ladder, rotary drive device is used for the drive the ladder body uses first axis of rotation to switch at vertical state and horizontality as the rotation center, the outside extension of side direction of automobile body is followed to first axis of rotation.

The utility model of this aspect has the beneficial effects that:

through setting up rotary driving device, drive the ladder body and switch at vertical state and horizontality along the outside first axis of rotation that extends of the side direction of automobile body, can be when the engineering machine tool is stepped on to needs, rotate the ladder body to vertical state, the ladder body that navigating mate can step on normal horizontal pole interval and distribute is stepped on the car, and is very convenient. And when engineering machine tool normal operation or travel, switch into the horizontality with the ladder body, and make the ladder body be located vertical plane, also need not to occupy very big lateral space, can not show the width that improves the vehicle.

In an alternative embodiment, the rotary driving device comprises a rotary oil cylinder, and an output shaft of the rotary oil cylinder is fixedly connected with one end of the ladder body.

In an optional embodiment, the vertical rod part of the ladder body is provided with a telescopic joint, and the telescopic joint is used for stretching along the length direction of the vertical rod part.

In an alternative embodiment, the ladder further comprises a locking device for being mounted on a side of the vehicle body, the locking device being used for locking the ladder body when the ladder body is moved to the horizontal state.

In an alternative embodiment, the locking device comprises a blocking portion and a locking driving device, the locking driving device is in transmission connection with the blocking portion, and the locking driving device is used for driving the blocking portion to switch between the extending state and the retracting state.

In an alternative embodiment, the locking drive comprises a linear drive assembly for driving the blocking portion in the same direction as the first axis of rotation and a guide portion.

In an alternative embodiment, the locking driving device includes a rotation driving component, and the rotation driving component is used for driving the blocking portion to rotate by taking a second axis as a rotation center, and the second axis is perpendicular to the first axis and is kept horizontal.

In an alternative embodiment, the blocking portion is a blocking hook, the opening of which has an upward component and/or a component toward the vehicle body.

A second object of the utility model is to provide an engineering machine tool, the inconvenient technical problem of getting on or off the bus of engineering machine tool that solution prior art provided.

The utility model provides an engineering machine, including any one of the engineering machine of the preceding embodiment ladder from top to bottom.

The utility model of this aspect has the beneficial effects that:

the engineering machinery provided by the aspect comprises the engineering machinery up-down ladder, so that the technical effect of the engineering machinery up-down ladder is achieved, and the details are not repeated.

In an optional embodiment, the engineering machinery further comprises a walking platform and an armrest, wherein the walking platform is arranged on the outer side of a cab of the engineering machinery, the armrest is installed on the surface of a covering part of the engineering machinery, and the engineering machinery up-down ladder is arranged behind the cab.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a construction machine to which a ladder according to an embodiment of the present invention is attached;

FIG. 2 is a diagrammatic illustration of the work machine of FIG. 1 with the ladder body in an upright position;

FIG. 3 is a schematic view of a locking device according to a first embodiment in a locked state;

FIG. 4 is a schematic view of the locking device in an unlocked state according to the first embodiment;

FIG. 5 is a schematic layout diagram of a remote controller according to a second embodiment;

fig. 6 is a schematic view of the locking device in the third embodiment in a locked state.

Icon: 10-rotating the oil cylinder; 20-a ladder body; 30-a locking device; 31-a barrier; 32-a linear drive assembly; 33-a rotary drive assembly; 41-arm-rest; 42-a walking platform; 43-a cover; 50-a remote controller; 51-ladder up button; 52-ladder descent button; 53-unlock button; 54-locking button.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "first type", "second type", "third type", etc. are used for distinction only, and are uniformly described with respect to the same type of component or feature, meaning that the number of the component or feature may be plural, but it is not denied that the number of the component or feature may be one.

Furthermore, the terms "horizontal", "vertical", "suspended", and the like do not imply that the components are required to be absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

As shown in fig. 1 to 4, the present embodiment provides a ladder for a construction machine, including a ladder body 20 and a rotary driving device, the rotary driving device is connected to the ladder body 20, the rotary driving device is used for driving the ladder body 20 to switch between a vertical state and a horizontal state by using a first rotation axis as a rotation center, and the first rotation axis extends outwards along a lateral direction of a vehicle body.

Through setting up rotary driving device, drive ladder body 20 and switch at vertical state and horizontality along the outside first axis of rotation that extends of the side direction of automobile body, can be when the engineering machine tool is stepped on to needs, rotate ladder body 20 to vertical state, the ladder body 20 that the navigating mate can step on normal horizontal pole interval and distribute steps on the car, and is very convenient. And when the engineering machinery normally works or travels, the ladder body 20 is switched into a horizontal state, and the ladder body 20 is positioned in a vertical plane, so that a large lateral space is not required to be occupied, and the width of a vehicle cannot be obviously improved. Specifically, for example, if the height from the ground to the rotating portion of the vehicle is 1 meter or 1.2 meters, and only 1 pedal can be allowed to be arranged in the traveling portion of the vehicle, the distance between the driver and the vehicle is 50 cm or 60 cm. And this application adopts solitary ladder body 20, can set up the interval between the ladder rung as required, need set up 25 centimetres and just set up 25 centimetres, need set up 30 centimetres and just set up 30 centimetres, does not receive the restriction of the bogie wheel, tow band pulley and the track of the part of traveling, has improved the flexibility of arranging that supplies the position that the driver trampled by a wide margin to driver's the car of having made things convenient for.

In an alternative embodiment, the rotary driving device comprises a rotary cylinder 10, and an output shaft of the rotary cylinder 10 is fixedly connected with one end of the ladder body 20. The mounting end of the rotary cylinder 10 is fixedly mounted on the vehicle body. Specifically, a connecting block may be installed at the bottom of the uppermost rung of the ladder body 20, and the connecting block may be fixedly connected to the output shaft of the rotary cylinder 10.

By arranging the rotating oil cylinder 10, the hydraulic resources provided by a hydraulic system on the vehicle can be fully utilized to rotate the ladder body 20. Meanwhile, one end of the ladder body 20 is connected with the output shaft, so that the length of the ladder body 20 can be reduced under the condition of realizing the same boarding height. Further, since the portion connected to the output shaft is provided below the uppermost rung, and the uppermost rung is close to the platform to be reached after stepping on the ladder or is as high as the platform, it is possible to avoid stepping on the rung at a high probability, and the portion connected to the output shaft is provided there, which does not cause any trouble to the driver.

In an alternative embodiment, the upright part of the ladder body 20 is provided with a telescopic joint for telescoping in the length direction of the upright part. Specifically, the vertical rod portion includes a side rod and a pedal (not shown in the figure) located at a lower end of the side rod, and in the present embodiment, the pedal is of a telescopic structure.

Through setting up the telescopic joint in pole setting portion for the whole length of ladder can change, thereby can make footboard bottom and ground contact completely, improved ladder body 20's stability.

As shown in fig. 3 in particular, in an alternative embodiment, a locking device 30 is further included, the locking device 30 being adapted to be mounted on a side of the vehicle body, the locking device 30 being adapted to lock the ladder body 20 when the ladder body 20 is moved to the horizontal position.

By arranging the locking device 30, a component for applying acting force can be added to the ladder body 20 when the ladder body 20 moves to the horizontal state, the stress structure of the ladder body 20 is changed from a cantilever beam structure into a simply supported beam structure, the torque on the rotary oil cylinder 10 is obviously weakened, and the rotary oil cylinder 10 does not need to maintain large torque for a long time; moreover, the ladder body 20 can be firmly fixed on the side surface of the vehicle, so that the influence of strong vibration in the working state or the driving state on the ladder or the rotary cylinder 10 is greatly weakened, and the service life of the embodiment can be prolonged to a certain extent.

In an alternative embodiment, the locking device 30 comprises a blocking portion 31 and a locking driving device, the driving device is in transmission connection with the blocking portion 31, and the locking driving device is used for driving the blocking portion 31 to switch between the extending state and the contracting state.

By providing that the blocking portion 31 is driven by the locking device 30, it is possible to actively control whether the locking device 30 locks the ladder body 20. When the ladder body 20 is driven to rotate by the driving oil cylinder, the blocking part 31 can be actively retracted to be in a contraction state, and when the locking driving device needs to be locked, the blocking part 31 can be extended out, so that the falling tendency of the ladder body 20 is blocked.

In an alternative embodiment, the locking driving device includes a rotation driving assembly 33, and the rotation driving assembly 33 is used for driving the blocking portion 31 to rotate by taking a second axis as a rotation center, wherein the second axis is perpendicular to the first axis and is kept horizontal. Specifically, the rotation driving assembly 33 in this embodiment is a steering engine, and the steering engine drives the blocking portion 31 to rotate along the second axis. When the blocking portion 31 is not required to lock the ladder body 20, the blocking portion 31 can be retracted into a recessed portion of the vehicle body side by the rotary drive assembly 33 without obstructing the movement of the ladder body 20 in the vertical plane. In addition, the second axis may be roughly considered to be parallel to the front-rear direction of the upper portion of the vehicle body.

The blocking part 31 is driven by the rotary driving assembly 33, the blocking part 31 can be directly withdrawn when the ladder body 20 is not required to be locked, extra action is not required to be carried out on the ladder body 20, unlocking can be completed, the whole action is simple, and the operation is convenient and rapid.

In an alternative embodiment, the blocking portion 31 is a blocking hook, the opening of which has an upward component and a component towards the vehicle body. The blocking portion 31 may be crescent-shaped, and when the blocking portion 31 is in the contracted state, the blocking portion 31 is opened to the side away from the vehicle body. As shown in fig. 3, the opening of the crescent-shaped stopper 31 is oriented upward and rightward in the drawing when the stopper 31 is in the extended state, i.e., has both an upward component and a component toward the vehicle body. In fact, the opening may only need to have an upward component to take up a portion of the weight of the ladder body 20 to effect the locking device 30. Or the opening may be directed toward the vehicle body side so that the ladder body 20 can be pressed against the vehicle body, and a locking action may be achieved.

In addition, in this embodiment, the starting, stopping and reversing of the rotary cylinder 10 can be completed by a manual reversing valve, and the starting and reversing of the steering engine can be controlled by a manual switch, which are well known to those skilled in the art and need not be described in detail in this application.

The operation principle of the embodiment is as follows:

when a driver needs to get on the vehicle for operation, the steering engine rotates counterclockwise as shown in fig. 3, the blocking portion 31 is retracted into the recess in the vehicle body, and the opening of the blocking portion 31 faces the outside of the vehicle body, which is shown in fig. 4. The rotary cylinder 10 drives the ladder body 20 to rotate clockwise as shown in fig. 1 and 2, and after the ladder body 20 moves to the vertical state, the pedals of the upright rod part of the ladder body 20 contact with the ground, at this time, as shown in fig. 2.

After the driver finishes the boarding process, the rotary oil cylinder 10 drives the ladder body 20 to rotate anticlockwise as shown in fig. 1 and 2, so that the ladder body 20 moves to a horizontal state. The steering gear rotates clockwise as shown in fig. 3, and changes from a retracted state to an extended state to support the ladder body 20, as shown in fig. 3.

Example two:

as shown in fig. 5, the present embodiment also provides a work machine up-down ladder, which is an improvement on the first embodiment, and the technical solutions of the first embodiment also belong to the first embodiment, and will not be described again here. The same reference numerals are used for the same components as in the first embodiment, and reference is made to the description of the first embodiment. If a reference numeral appears in the drawings used in the embodiment and does not appear in the text of the embodiment, reference may be made to the description of the embodiment on the reference numeral.

The difference between the present embodiment and the first embodiment is that the first embodiment adopts a manual mode to control the related rotary cylinder 10 and steering engine, and actually, the remote controller 50 can also be used to control the above actions, specifically, the remote controller 50 is provided with a ladder ascending button 51, an unlocking button 53, a locking button 54, and a ladder descending button 52 to control the corresponding functions. The related control circuit is already in the prior art and is not described herein again.

Example three:

as shown in fig. 6, the present embodiment also provides a work machine up-down ladder, which is an improvement on the first embodiment, and the technical solutions of the first embodiment also belong to the first embodiment, and will not be described again here. The same reference numerals are used for the same components as in the first embodiment, and reference is made to the description of the first embodiment. If a reference numeral appears in the drawings used in the embodiment and does not appear in the text of the embodiment, reference may be made to the description of the embodiment on the reference numeral.

In an alternative embodiment, the locking drive means comprises a linear drive assembly 32 and a guide, the linear drive assembly 32 being adapted to drive the blocking portion 31 in the same direction as the first axis of rotation. Specifically, the linear driving assembly 32 may be a cylinder, an oil cylinder, a linear motor, an electric screw, or the like. The blocking portion 31 in this embodiment may be a crescent or an L, and the opening is oriented at an upper right angle in fig. 5. The guide portion may be a support portion for supporting the stopper portion 31 upward in fig. 6.

The linear driving assembly 32 is adopted to drive the blocking portion 31 to move linearly, the locking of the ladder body 20 can be realized by directly utilizing the characteristic that the movement direction of the blocking portion 31 is perpendicular to the load applied to the blocking portion 31 by the ladder body 20, and even if the linear driving assembly 32 fails, the locking failure cannot be caused, so that the locking stability can be improved, and the ladder body 20 is prevented from falling and being damaged.

The operation principle of the present embodiment is different from that of the first embodiment in that:

before the ladder body 20 is converted from the horizontal state to the vertical state, the locking device 30 needs to be unlocked first, and the unlocking process of the locking device 30 specifically includes: the ladder body 20 is first moved upwards so that the upright part of the ladder body 20 no longer interferes with the telescopic movement of the blocking part 31. The linear drive assembly 32 retracts the stopper 31. The ladder body 20 is rotated clockwise in fig. 2 by the rotation cylinder 10 to be in a vertical state.

Before the ladder body 20 needs to be converted from the vertical state to the horizontal state, the blocking part 31 is required to be in the contraction state, and the ladder body 20 is driven by the rotary cylinder 10 to rotate along the anticlockwise direction in fig. 2 to be in the state slightly higher than the horizontal state. The linear drive member then drives the blocking portion 31 out. The ladder body 20 is lowered again to fall into the opening of the blocking portion 31.

Example four:

as shown in fig. 1-2, the present embodiment provides an engineering machine, which solves the technical problem of inconvenient getting on and off of the engineering machine provided in the prior art.

The construction machine provided by the embodiment comprises the construction machine ascending and descending ladder in any one of the previous embodiments.

Because the engineering machinery provided by the embodiment comprises the engineering machinery up-down ladder, the technical effect of the engineering machinery up-down ladder is achieved, and details are not repeated herein.

In an alternative embodiment, the engineering machinery further comprises a walking platform 42 and an armrest 41, wherein the walking platform 42 is arranged on the outer side of a cab of the engineering machinery, the cab is located in the middle or the inner side of the middle or the front part of the walking platform 42, the armrest 41 is installed on the surface of a covering part 43 of the engineering machinery, and the engineering machinery up and down ladder is arranged behind the cab.

The driver can get into the cab from the walking platform 42 after climbing up from the ladder body 20, and by adopting the layout scheme, the change of the cab nearby can be reduced, the compatibility with the existing engineering machinery is facilitated, and the change of the existing engineering machinery is reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; for example:

in the first embodiment, the ladder body is provided with the retractable pedals, so that the ladder can adapt to different terrains. It is also possible in practice to arrange the side bars of the ladder in a telescopic configuration. Since the ladder is not required to be extended or retracted by one or two meters, possibly by only a few centimeters or a dozen or so centimeters, just to adapt to different terrains, such extension or retraction does not constitute a substantial modification of the structure of the ladder, which is fully within the reach of the skilled person.

In the first embodiment, the ladder body is driven to move by using the rotary oil cylinder, and actually, the ladder body can be driven to move by using a motor or a combination of the motor and a speed reducer. Alternatively, the electric motor may be replaced with a steering engine.

In the first embodiment, a rotary cylinder is connected to one end of the ladder body, and when the ladder body is in a horizontal state, the rotary cylinder needs to bear large torque, so that the willingness of a person skilled in the art to set a locking device to lock the ladder is enhanced. In fact, instead of attaching the swivel ram at one end of the ladder body, it may be attached, for example, at the middle portion, or at a position between the middle and end portions, to eliminate or reduce the torque when the ladder body is in a horizontal position. With this arrangement, of course, more rational choices need to be made in view of the spatial distribution of the other components of the vehicle.

In the third embodiment, the engineering machinery up-down ladder is arranged at the rear end of the walking platform, and in fact, the engineering machinery up-down ladder can be directly arranged below the cab, and the walking platform and the handrails do not need to be arranged.

Such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides an engineering machinery ladder from top to bottom, its characterized in that includes ladder body (20) and rotary driving device, rotary driving device with ladder body (20) are connected, rotary driving device is used for the drive ladder body (20) use first axis of rotation to switch at vertical state and horizontality as the center of rotation, the outside extension of side direction of automobile body is followed to first axis of rotation.

2. The engineering machinery ladder capable of ascending and descending according to the claim 1, wherein the rotary driving device comprises a rotary oil cylinder (10), and an output shaft of the rotary oil cylinder (10) is fixedly connected with one end of the ladder body (20).

3. The engineering machinery ladder of claim 1, wherein the vertical rod part of the ladder body (20) is provided with a telescopic joint, and the telescopic joint is used for stretching along the length direction of the vertical rod part.

4. A working machine up-down ladder according to claim 1, 2 or 3, characterized by further comprising a locking device (30), the locking device (30) being adapted to be mounted on a side of the vehicle body, the locking device (30) being adapted to lock the ladder body (20) when the ladder body (20) is moved to the horizontal position.

5. A working machine climbing ladder according to claim 4, characterized in that the locking device (30) comprises a blocking part (31) and a locking drive, which is in driving connection with the blocking part (31) and which is used to drive the blocking part (31) to switch between the extended state and the retracted state.

6. A working machine climbing ladder according to claim 5, characterized in that the locking drive comprises a linear drive assembly (32) and a guide, the linear drive assembly (32) being adapted to drive the blocking part (31) in the same direction as the first rotation axis.

7. A ladder as claimed in claim 5, characterised in that the locking drive comprises a rotary drive assembly (33), the rotary drive assembly (33) being adapted to drive the blocking part (31) in rotation about a second axis, which is perpendicular to the first axis and remains horizontal.

8. A ladder as claimed in claim 5, characterised in that the blocking part (31) is a blocking hook, the opening of which has an upward component and/or a component towards the car body.

9. A working machine comprising a working machine up-down ladder according to any one of claims 1-8.

10. The working machine according to claim 9, characterized by further comprising a walking platform (42) and a handrail (41), the walking platform (42) being arranged outside a cab of the working machine, the handrail (41) being mounted on a surface of a cover (43) of the working machine, the working machine up-down ladder being arranged behind the cab.