CN210084758U

CN210084758U - Overhead working truck

Info

Publication number: CN210084758U
Application number: CN201920634198.7U
Authority: CN
Inventors: 谢子云; 温艳东
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-02-18
Anticipated expiration: 2029-05-06

Abstract

The utility model relates to an aerial working vehicle. This high altitude construction car includes: a telescopic arm; the fly jib is hinged to one end of the telescopic jib; the fly arm driving piece is connected between the fly arm and the telescopic arm; the mounting frame is hinged to one end of the telescopic arm, which is connected with the fly arm; the operation platform is rotatably connected to the mounting frame around a first axis; the distance sensor is used for detecting the minimum distance between the flying arm and the working platform in the horizontal direction; and the controller is configured to control the flying arm driving piece to stop driving the flying arm to swing when the minimum distance between the flying arm and the working platform in the horizontal direction is smaller than the preset distance. The aerial work platform is provided with a distance sensor for detecting the minimum distance between the flying arm and the work platform in the horizontal direction. The controller is used for controlling the fly jib driving piece to stop driving the fly jib to swing when the minimum distance between the fly jib and the operation platform in the horizontal direction is smaller than the preset distance so as to avoid the collision between the fly jib and the operation platform and the occurrence of safety accidents.

Description

Overhead working truck

Technical Field

The utility model relates to an engineering machine tool equipment field especially relates to an aerial working car.

Background

When the high-altitude operation is carried out, the high-altitude operation vehicle is required to hoist personnel and required materials to a designated station for the high-altitude operation.

Generally, an aerial work platform includes an arm support and a work platform mounted on the arm support for carrying a worker. Due to the arrangement of the operation platform, the arm support is easily interfered with the operation platform in the swinging process, and potential safety hazards exist. Particularly, when the high-altitude operation vehicle works aloft in a tunnel with limited height space, the high-altitude operation vehicle mainly realizes the grabbing and positioning of the workpiece through the swinging of the front end of the arm support, so that the swinging amplitude of the front end of the arm support is large, the front end of the arm support is more likely to interfere with an operation platform, and safety accidents occur.

SUMMERY OF THE UTILITY MODEL

Therefore, the overhead working truck capable of overcoming the defects is needed to solve the problems that the traditional overhead working truck is easy to interfere with a working platform in the swinging process of the arm support and has potential safety hazards.

Aerial working platform truck includes:

a chassis;

one end of the telescopic arm is hinged to the chassis;

the flying arm is hinged to the other end, opposite to the telescopic arm, of the telescopic arm so that the flying arm can swing in a vertical plane;

the fly arm driving piece is connected between the fly arm and the telescopic arm and used for driving the fly arm to swing in a vertical plane;

the mounting frame is hinged to one end, connected with the fly arm, of the telescopic arm, so that the mounting frame can swing in a vertical plane;

the operation platform is rotatably connected to the mounting frame around a first axis parallel to the vertical direction;

the distance sensor is arranged at one end of the telescopic boom, provided with the fly jib, and used for detecting the minimum distance between the fly jib and the operation platform in the horizontal direction; and

the controller is in communication connection with the distance sensor and the fly jib driving piece, and the controller is configured to control the fly jib driving piece to stop driving the fly jib to swing when the minimum distance between the fly jib and the working platform in the horizontal direction is smaller than a preset distance.

The aerial work platform is provided with a distance sensor for detecting the minimum distance between the flying arm and the work platform in the horizontal direction. The controller is used for controlling the flying arm driving part to stop driving the flying arm to swing when the minimum distance (namely the detection result of the distance sensor) between the flying arm and the working platform in the horizontal direction is smaller than the preset distance so as to avoid the collision between the flying arm and the working platform and the occurrence of safety accidents, thereby improving the safety of the overhead working truck.

In one embodiment, the aerial lift vehicle further comprises a platform drive member and a tilt sensor; the platform driving piece is connected between the mounting frame and the telescopic arm and used for driving the mounting frame to swing in a vertical plane relative to the telescopic arm; the inclination angle sensor is arranged on the operation platform and used for detecting an included angle between the operation platform and a horizontal plane;

the controller communication connect in tilt angle sensor reaches the platform driving piece, the controller is configured to be used for when the contained angle of operation platform and horizontal plane is greater than when predetermineeing the contained angle, control the drive of platform driving piece the mounting bracket rotates, so that the contained angle of operation platform and horizontal plane is less than or equal to predetermine the contained angle.

In one embodiment, the aerial lift truck further comprises a length sensor, wherein the length sensor is arranged on the telescopic arm and used for detecting the length of the telescopic arm;

the controller is in communication connection with the length sensor and the telescopic arm, and is configured to calculate the overturning moment of the load of the aerial work platform on the chassis according to the length of the telescopic arm and control the telescopic arm to stop extending when the overturning moment is larger than a preset overturning moment.

In one embodiment, the aerial lift truck further comprises a first rotary drive, and the work platform is connected to the mounting frame by the first rotary drive, so that the first rotary drive can drive the work platform to rotate around the first axis.

In one embodiment, the first rotary drive is a swing cylinder or a hydraulic motor.

In one embodiment, the aerial lift truck further comprises a swing frame and a work executing device, the swing frame is rotatably connected to one end, far away from the telescopic arm, of the flying arm around a second axis parallel to the vertical direction, and the work executing device is mounted on the swing frame.

In one embodiment, the aerial lift truck further comprises a slewing drive;

the rotary driving device is fixedly connected to the swing frame; the work executing device is arranged on the swing frame through the rotary driving device, so that the rotary driving device drives the work executing device to rotate around the axis of the work executing device.

In one embodiment, the swing drive is a geared swing drive or a worm and gear swing drive.

In one embodiment, the fly arm drive includes a first cylinder and a first hydraulic control unit connected to the first cylinder;

the two opposite ends of the first oil cylinder are respectively hinged with the fly arm and the telescopic arm;

the controller is in communication connection with the first hydraulic control unit so as to control the first oil cylinder to stop driving the fly arm to swing through the first hydraulic control unit.

In one embodiment, the platform driving member comprises a second oil cylinder and a second hydraulic control unit connected with the second oil cylinder;

the opposite two ends of the second oil cylinder are respectively hinged with the mounting frame and the telescopic arm;

the controller is in communication connection with the second hydraulic control unit so as to control the mounting frame to rotate through the second hydraulic control unit.

Drawings

Fig. 1 is a schematic structural view of an aerial cage according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the aerial platform of FIG. 1 with the work platform removed;

FIG. 3 is a schematic illustration of the mechanism of the aerial lift truck of FIG. 1 with the booms removed;

FIG. 4 is a schematic illustration of the fly jib of the aerial lift truck of FIG. 1;

fig. 5 is a schematic structural view of an aerial cage according to another embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 shows a schematic structural diagram of an aerial cage according to an embodiment of the present invention. Fig. 2 shows a schematic structural view of the aerial platform of fig. 1 with the aerial platform removed. Fig. 3 shows a schematic view of the mechanism of the aerial lift truck of fig. 1 with the booms removed. Fig. 4 shows a schematic view of the fly jib of the aerial lift truck of fig. 1. Fig. 5 shows a schematic structural diagram of an aerial cage according to another embodiment of the present invention. For the purpose of illustration, the drawings show only the structures pertinent to the present invention.

As shown in fig. 1, the aerial lift truck includes a chassis 10, a telescopic boom 30, a fly jib 40, a fly jib driving member (not shown), a mounting frame 50, a work platform 60, a distance sensor (not shown), and a controller (not shown).

One end of the telescopic arm 30 is hingedly connected to the chassis 10. Fly arm 40 is hingedly connected to the opposite end of telescopic arm 30 so that fly arm 40 can swing in a vertical plane, thereby enhancing the flexibility of the aerial lift truck. The fly arm driving part is connected between the fly arm 40 and the telescopic arm 30 and is used for driving the fly arm 40 to swing in a vertical plane relative to the telescopic arm 30. Mounting bracket 50 is hingedly connected to the end of telescopic arm 30 to which fly arm 40 is connected, so that mounting bracket 50 is swingable in a vertical plane. The work platform 60 is rotatably connected to the mounting bracket 50 about a first axis parallel to the vertical direction so that the work platform 60 can swing in the horizontal plane.

Because the flying arm 40 and the working platform 60 are both located at one end of the telescopic arm 30 far away from the chassis 10 (that is, the flying arm 40 and the mounting frame 50 are arranged side by side, and the working platform 60 is mounted on the mounting frame 50), and the working platform 60 can rotate around a first axis parallel to the vertical direction (that is, can swing in a horizontal plane), and can also swing in a vertical plane along with the mounting frame 50, when the flying arm 40 and the working platform 60 are overlapped on the horizontal plane or have a small distance therebetween, the flying arm driving member drives the flying arm 40 to swing in the vertical plane, which is easy to interfere with the working platform 60, and causes a safety accident.

The distance sensor is disposed at one end of the telescopic boom 30 connected to the flying boom 40, and is configured to detect a minimum distance between the flying boom 40 and the work platform 60 in the horizontal direction. The controller is in communication connection with the distance sensor and the fly jib driving member, and the controller is configured to control the fly jib driving member to stop driving the fly jib 40 to swing when the minimum distance between the fly jib 40 and the working platform 60 in the horizontal direction is smaller than the preset distance, so as to avoid safety accidents.

The aerial cage is provided with a distance sensor for detecting the minimum distance between the flying arm 40 and the work platform 60 in the horizontal direction. The controller is used for controlling the driving piece of the flying arm 40 to stop driving the flying arm 40 to swing when the minimum distance (namely the detection result of the distance sensor) between the flying arm 40 and the working platform 60 in the horizontal direction is smaller than the preset distance so as to avoid safety accidents caused by collision between the flying arm 40 and the working platform 60, and therefore the safety of the overhead working truck is improved.

When the orthographic projection of the flying arm 40 and the working platform 60 on the horizontal plane is overlapped, the minimum distance value between the flying arm 40 and the working platform 60 in the horizontal direction is a negative value; when the orthographic projections of the flying arm 40 and the work platform 60 on the horizontal plane do not overlap, the minimum distance value between the flying arm 40 and the work platform 60 in the horizontal direction is positive. It is understood that when the minimum distance value between the fly jib 40 and the work platform 60 in the horizontal direction is a negative value, a positive value close to 0, or equal to 0, the fly jib 40 is highly likely to collide with the work platform 60 during the vertical swing, thereby causing a safety accident. Alternatively, the preset spacing may be a positive value greater than 0.

Referring also to fig. 2, in an exemplary embodiment, the fly arm drive includes a first cylinder 46 and a first hydraulic control unit (not shown). Opposite ends of the first oil cylinder 46 are respectively hinged to the flying arm 40 and the telescopic arm 30, so that the flying arm 40 is driven to swing in a vertical plane relative to the telescopic arm 30 through the extension and contraction of the first oil cylinder 46. The controller is communicatively connected to the first hydraulic control unit to control the first cylinder 46 to stop driving the fly arm 40 to swing through the first hydraulic control unit.

The first hydraulic control unit includes a hydraulic line connected between the hydraulic pump and the first cylinder 46, and a hydraulic control valve provided in the hydraulic line. The controller may control the first cylinder 46 by controlling the hydraulic control valve. The structures of the hydraulic pipeline and the hydraulic control valve are well-established technologies in the field, and are not described herein again.

Referring to fig. 3, in an embodiment of the present invention, the aerial cage further includes a platform driving member (not shown) and an inclination sensor (not shown). The platform driving member is connected between the mounting frame 50 and the telescopic arm 30, and is used for driving the mounting frame 50 to swing in a vertical plane relative to the telescopic arm 30.

The tilt sensor is disposed on the working platform 60 and is used for detecting an included angle between the working platform 60 and a horizontal plane. The controller is in communication connection with the tilt sensor and the platform driving member. The controller is configured to control the platform driving member to drive the mounting frame 50 to rotate when the included angle between the working platform 60 and the horizontal plane is greater than the preset included angle, so that the included angle between the working platform 60 and the horizontal plane is smaller than or equal to the preset included angle, thereby preventing constructors from falling down or falling down due to the fact that the working platform 60 is inclined relative to the horizontal plane too much, and further improving the safety of the aerial work platform.

In an embodiment, the platform driving member includes a second cylinder and a second hydraulic control unit connected to the second cylinder. The opposite ends of the second oil cylinder are respectively hinged to the mounting frame 50 and the telescopic arm 30, so that the mounting frame 50 is driven to swing in the vertical plane relative to the telescopic arm 30 through the stretching of the second oil cylinder, and the operation platform 60 is driven to swing in the vertical plane. The controller is communicatively connected to the second hydraulic control unit, so as to control the rotation of the mounting frame 50 through the second hydraulic control unit, thereby always keeping the work platform 60 in a horizontal state or a state close to the horizontal state, and further improving the safety of the aerial work platform.

The second hydraulic control unit includes a hydraulic line connected between the hydraulic pump and the second cylinder, and a hydraulic control valve provided in the hydraulic line. The controller can control the second oil cylinder by controlling the hydraulic control valve. The structures of the hydraulic pipeline and the hydraulic control valve are well-established technologies in the field, and are not described herein again.

In the embodiment of the utility model, the overhead working truck further comprises a length sensor, the length sensor is arranged on the telescopic arm 30 and is used for detecting the length of the telescopic arm 30;

the controller is communicatively connected to the length sensor and the telescopic arm 30, and the controller is configured to calculate an overturning moment of the load of the aerial work platform on the chassis 10 according to the length of the telescopic arm 30, and control the telescopic arm to stop extending when the overturning moment is greater than a preset overturning moment. Therefore, the rollover accident can be prevented by arranging the length sensor.

It will be appreciated that the predetermined overturning moment may be determined by the specifications of the particular chassis 10, mast 20 and telescopic boom 30 components. When the overturning moment of the load of the overhead working truck on the chassis 10 is less than or equal to the preset overturning moment, the overhead working truck cannot have a rollover accident; when the overturning moment of the load of the aerial platform truck on the chassis 10 is larger than the preset overturning moment, the aerial platform truck is easy to overturn.

In the embodiment of the present invention, the aerial lift truck further includes a first rotation driving device 52, and the work platform 60 is connected to the mounting frame 50 through the first rotation driving device 52, so that the first rotation driving device 52 can drive the work platform 60 to rotate around the first axis. In this way, a swinging movement of the work platform 60 in the horizontal direction is achieved.

Alternatively, the first rotary drive device 52 may be a swing cylinder or a hydraulic motor, or the like.

Referring to fig. 2 and 4, in the embodiment of the present invention, the aerial lift platform further includes a swing frame 42 and a work executing device 70, wherein the swing frame 42 is rotatably connected to an end of the fly jib 40 away from the telescopic jib 30 around a second axis parallel to the vertical direction. The work implement 70 is mounted to the swing frame 42. Therefore, the position of the work executing device 70 can be adjusted to a large extent primarily by controlling the swinging of the telescopic arm 30 and the self-expansion and contraction, so that the work executing device 70 moves to the vicinity of the designated station, and then the swinging of the fly arm 40 in the vertical plane and the swinging of the swing frame 42 in the horizontal plane (i.e. the swinging around the second axis) are controlled to accurately adjust the position of the work executing device 70 to a small extent, so that the work executing device 70 moves to the designated station, and therefore, the aerial work platform is suitable for construction work in tunnels with limited height and space.

In the embodiment, the aerial lift truck further includes a second rotation driving device 44, and the swing frame 42 is connected to the fly arm 40 through the second rotation driving device 44, so that the swing frame 42 is driven by the second rotation driving device 44 to rotate around the second axis relative to the fly arm 40. Alternatively, the second rotation driving device 44 may be a driving device for outputting torque, such as a swing cylinder, a hydraulic motor, etc., and is not limited herein. The driving device itself and the mounting structure for the output torque are well known in the art and will not be described in detail.

In particular embodiments, the aerial lift truck further includes a swing drive 72. The swing drive 72 is fixedly attached to the swing frame 42. The work implement 70 is mounted to the swing frame 42 by a swing drive 72 so as to be rotated about the axis of the work implement 70 itself by the swing drive 72. Therefore, the flexibility of the overhead working truck is improved, and the construction operation is more conveniently completed.

Alternatively, the swing drive 72 may be a geared swing drive or a worm gear swing drive.

In particular embodiments, the work implement 70 may be configured to grasp a workpiece, in which case the work implement 70 may be a mechanical gripper. For example, when steel member overlapping is performed, a mechanical gripper is used to grip the steel member and move the steel member to a designated station, and then a constructor on the work platform 60 performs operations such as welding on the steel member at the designated station, thereby completing the overlapping of the steel member. It should be noted that the work implement 70 is not limited to use in grasping a workpiece, and may be used to perform other actions, and is not limited thereto.

For safety of the constructors, in one embodiment, a fence 62 is further installed on the working platform 60, further improving the safety of the aerial cage.

As shown in fig. 1, in the embodiment of the present invention, the aerial cage further includes a column 20. The mast 20 is pivotally connected to the chassis 10 about an axis, and the end of the telescopic arm 30 remote from the fly arm 40 is hingedly connected to the mast 20 so that the telescopic arm 30 can swing in a vertical plane relative to the mast 20. Therefore, the spatial position of the work executing device 70 can be adjusted by controlling the rotation of the upright post 20, so that the flexibility of the overhead working truck is further improved, and the construction efficiency is favorably improved.

Referring to fig. 5, in another embodiment of the present invention, the telescopic arm 30 is not directly connected to the upright 20, but indirectly connected to the upright 20 through a connecting arm 80. Specifically, opposite ends of the connecting arm 80 are respectively hinged to the upright post 20 and the telescopic arm 30, so that the connecting arm 80 can swing in a vertical plane relative to the upright post 20, and the telescopic arm 30 can swing in a vertical plane relative to the connecting arm 80. Therefore, the flexibility of the overhead working truck is further improved, and the construction efficiency is favorably improved.

In this embodiment, a hydraulic cylinder 22 may be provided, which is connected to the connecting arm 80 and the upright post 20 via two opposite ends thereof, and the connecting arm 80 is driven to swing in a vertical plane relative to the upright post 20 by the expansion and contraction of the hydraulic cylinder. Similarly, a hydraulic cylinder 82 may be provided, which is connected to the connecting arm 80 and the telescopic arm 30 at opposite ends thereof, and the telescopic arm 30 is driven to swing in a vertical plane with respect to the connecting arm 80 by extending and retracting the hydraulic cylinder 82.

It should be noted that the link arm 80 is not essential and in the embodiment shown in figure 1, the aerial lift truck does not include the link arm 80 and one end of the telescopic arm 30 is directly hingedly connected to the upright 20 so that the telescopic arm 30 can swing in a vertical direction relative to the upright 20. Similarly, a hydraulic cylinder may be provided, which is connected to the telescopic arm 30 and the upright post 20 via two opposite ends thereof, and the telescopic arm 30 is driven to swing in the vertical direction with respect to the upright post 20 by the extension and contraction of the hydraulic cylinder.

In the embodiment of the present invention, the chassis 10 may be a crawler-type chassis, a guide-rail type chassis, a wheel-type chassis, etc., as long as it is movable, and it is not limited herein. Preferably, the chassis 10 may be a tracked chassis, so that the aerial lift truck travels flexibly, smoothly and has strong bearing capacity.

Referring to fig. 1 and 5, in an embodiment of the present invention, the aerial platform further includes a rotating platform 24, the rotating platform 24 is rotatably mounted on the chassis 10 around a vertical axis, and the upright 20 is coaxially mounted on the rotating platform 24 (i.e. the axis of the upright 20 is collinear with the vertical axis of the rotating platform 24) so as to rotate synchronously with the rotating platform 24. In this way, the rotating platform 24 rotates the upright 20 relative to the chassis 10 about the axis of the upright 20 itself. Alternatively, the mast 20 is bolted to the rotating platform 24.

In the embodiment, the rotary platform 24 is further fixedly provided with an operation room 90, and a driver can drive or control the postures of the connecting arm 80, the telescopic arm 30, the fly jib 40 and the like in the operation room, so as to enable the work executing device 70 to complete the work.

In the embodiment, a counterweight 26 is also fixedly mounted on the rotating platform 24, so that the high-altitude operation vehicle can keep balance and the stability of the high-altitude operation vehicle is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. High altitude construction car, its characterized in that includes:

a chassis;

one end of the telescopic arm is hinged to the chassis;

2. The aerial lift truck of claim 1 further comprising a platform drive member and a tilt sensor; the platform driving piece is connected between the mounting frame and the telescopic arm and used for driving the mounting frame to swing in a vertical plane relative to the telescopic arm; the inclination angle sensor is arranged on the operation platform and used for detecting an included angle between the operation platform and a horizontal plane;

3. The aerial lift truck of claim 1 further comprising a length sensor disposed on the telescoping arm for detecting a length of the telescoping arm;

4. The aerial lift truck of claim 1 further comprising a first rotary drive, the work platform being coupled to the mounting bracket by the first rotary drive such that the first rotary drive can drive the work platform about the first axis.

5. The aerial lift truck of claim 4 wherein the first rotary drive is a swing cylinder or a hydraulic motor.

6. The aerial lift truck of claim 1 further comprising a swing frame rotatably connected to the fly jib at an end thereof remote from the telescopic jib about a second axis parallel to the vertical direction, and a work implement mounted to the swing frame.

7. The aerial lift truck of claim 6 further comprising a slewing drive;

8. The aerial lift truck of claim 7 wherein the swing drive is a geared swing drive or a worm and gear swing drive.

9. The aerial lift truck of claim 1 wherein the fly jib drive member comprises a first cylinder and a first hydraulic control unit connected to the first cylinder;

10. The aerial lift truck of claim 2 wherein the platform drive member comprises a second cylinder and a second hydraulic control unit connected to the second cylinder;