CN218620232U

CN218620232U - Overhead working truck and weighing system thereof

Info

Publication number: CN218620232U
Application number: CN202222663637.1U
Authority: CN
Inventors: 姜根; 方佳梦; 段建辉
Original assignee: Hunan Zoomlion Intelligent Aerial Work Machinery Co Ltd
Current assignee: Hunan Zoomlion Intelligent Aerial Work Machinery Co Ltd
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2023-03-14
Anticipated expiration: 2032-10-10

Abstract

The application discloses an aerial working platform and a weighing system thereof, wherein the weighing system comprises a working platform, a slewing device and a sensor device, and the slewing device is arranged right below the working platform and is used for rotationally driving the working platform; the sensor device is used for weighing the working platform and is arranged between the rotating device and the working platform. The aerial work platform comprises a driving arm assembly and the weighing system of the aerial work platform, wherein the weighing system is arranged at the tail end of the driving arm assembly. According to the aerial work vehicle and the weighing system thereof, the distance from the center of the working platform to the rotation center can be adjusted in the device design stage through the optimized design of the installation structure of the rotation mechanism and the weighing device, the purpose of weighing the load of the platform is achieved, meanwhile, the length and the weight of the whole vehicle are reduced, the structural compactness is improved, and the quality and the length of the whole vehicle meet the requirements of a legal blue-brand vehicle. Moreover, operators do not have visual field blind areas, collision accidents are avoided more easily, and the operation safety is effectively improved.

Description

Overhead working truck and weighing system thereof

Technical Field

The application belongs to the field of high-altitude operation vehicles, and particularly relates to a high-altitude operation vehicle and a weighing system thereof.

Background

The overhead working truck is a motor vehicle which can legally run on the road, so that the whole weight and the whole length of the overhead working truck which can run on the road are limited. Therefore, in the specific structural design of the work platform and the weighing system thereof, on the basis of considering the operational flexibility and safety of the work platform, the related weight and size limitations need to be fully considered, the weight of the work platform and the weighing mechanism thereof needs to be reduced as much as possible, and the design size in the length direction needs to be limited. However, the design of prior art weighing systems often has difficulties in compromising compactness and operational safety.

SUMMERY OF THE UTILITY MODEL

The application aims to provide an aerial working platform and a weighing system thereof, so that the aerial working platform is more compact in structure and safer to operate on the basis of achieving the purpose of weighing a platform load.

In order to achieve the above object, according to a first aspect of the present application, there is provided a weighing system of an aerial work vehicle, comprising:

a working platform;

the rotating device is arranged right below the working platform and is used for rotationally driving the working platform;

and the sensor device is used for weighing the working platform and is arranged between the rotating device and the working platform.

In some embodiments of the present application, the sensor device comprises:

a weighing sensor; and

and the upper connecting plate is connected with the bottom plate of the working platform and the weighing sensor.

In some embodiments of the present application, the upper connecting plate is connected to the working platform by a first fastener, and a transverse distance between a center of a bottom plate of the working platform and a center of rotation of the swiveling device is not greater than half of a transverse width of the working platform.

In some embodiments of the present application, the load cell is a disc-type load cell for single-point weighing, and an upper portion of the disc-type load cell is connected to the upper connection plate by a plurality of second fastening members arranged at intervals in a circumferential direction.

In some embodiments of the present application, the weighing system comprises:

the transition seat is arranged between the disc type weighing sensor and the rotary device;

the transition seat is connected with the lower part of the disc type weighing sensor through a plurality of third fasteners arranged at intervals along the circumferential direction, and the transition seat is connected with the upper part of the rotary device through a plurality of fourth fasteners arranged at intervals along the circumferential direction.

In some embodiments of the present application, the load cell is an cantilever-type load cell, and a plurality of the cantilever-type load cells arranged at intervals in the circumferential direction are connected to the upper connecting plate by fifth fasteners, respectively.

In some embodiments of the present application, the weighing system comprises:

the lower connecting plate is arranged between the cantilever beam type weighing sensor and the slewing device;

the cantilever beam type weighing sensors are respectively connected with the lower connecting plate through sixth fasteners, and the lower connecting plate is connected with the upper portion of the slewing device through seventh fasteners.

In some embodiments of the present application, the weighing system comprises:

and the leveling seat is used for leveling the rotating device.

In some embodiments of the present application, the swivel device is mounted to a top end of the leveling seat and is fastened by a plurality of eighth fasteners.

According to a second aspect of the present application, there is also provided an aerial lift truck comprising a drive arm assembly, the aerial lift truck further comprising a weighing system as described above for the aerial lift truck, the weighing system being mounted at the distal end of the drive arm assembly.

In the overhead working truck and the weighing system thereof, the rotary mechanism and the weighing device are directly arranged under the working platform, so that the purpose of weighing the load of the platform is achieved, meanwhile, connecting supports for extension and the like are not needed, the length of the whole truck and the weight of a cantilever of the weighing mechanism can be reduced, the structural compactness is improved, and the quality and the length of the whole truck meet the requirements of a legal on-road blue-brand truck. Moreover, due to the fact that extension pieces such as connecting supports are omitted, the visual field blind area does not exist for operating personnel, when the rotary table is operated, the distance between the outer end face of the working platform and the barrier can be clearly observed, collision accidents are avoided, and operation safety is improved.

Additional features and advantages of embodiments of the present application will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the detailed description serve to explain the embodiments of the disclosure, but are not intended to limit the embodiments of the disclosure. In the drawings:

FIG. 1 is a perspective view of a weighing system of a prior art aerial lift truck;

FIG. 2 is a schematic representation of a weighing system of another prior art aerial lift vehicle;

FIG. 3 is a schematic diagram of a weighing system according to an embodiment of the present application;

FIG. 4 is an enlarged partial view of a portion corresponding to portion A of FIG. 3 according to an embodiment of the present application;

FIG. 5 is an enlarged partial schematic view corresponding to section A of FIG. 3 in accordance with another embodiment of the present application; and

FIG. 6 is a schematic structural diagram of an aerial platform according to an embodiment of the present application.

Description of the reference numerals

1. 2 slewer of work platform

3. Upper connecting plate of weighing sensor 4

5. 6 leveling seats of transition seat

7. Transverse distance of lower connecting plate L

11. First fastener 12 second fastener

13. Third fastener 14 fourth fastener

15. Fifth fastener 16 sixth fastener

17. Seventh fastener 18 eighth fastener

21. Working bucket bracket 22L-shaped support

100. Driving arm assembly

Detailed Description

The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are given by way of illustration and explanation only, not limitation.

An aerial lift truck and a weighing system therefor according to the present application are described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, in the conventional aerial work platform and the weighing system thereof, the work platform 1 is generally in the form of a connecting bracket when being pivotally mounted at the end of the driving arm assembly 100, and the load cell 3 is mounted in the bracket pivot mounting structure. For example, fig. 1 shows a flat plate connection bracket that projects flat, and fig. 2 shows an L-shaped connection bracket. The installation mode of the pivot connection is simple, but obviously, the weight of the working platform 1 and the connecting bracket thereof is large, so that the bending moment of the driving arm assembly 100 is increased, and the design requirement and the weight of the arm support are increased; and the connecting bracket is adopted, so that the whole length of the overhead working truck must be prolonged. In addition, taking fig. 2 as an example, at a circle, a working bucket bracket 21 installed on the working platform 1 is connected with an L-shaped bracket 22 connected to the slewing device 2 through 4 connecting pin shafts, but this results in a large assembly gap, so that the platform is greatly shaken, and the use experience is influenced; furthermore, the connecting bracket 22 is located behind the work platform 1, and when the operator operates on the turntable side, the distance between the connecting bracket and the obstacle cannot be observed due to limited vision, so that a collision risk may occur.

In view of the above, the present application provides a weighing system for an aerial lift platform for weighing a load of the aerial lift platform. As shown in fig. 3-5, in an embodiment, a weighing system for an aerial lift truck comprises:

a work platform 1;

the rotating device 2 is arranged right below the working platform 1 and is used for rotationally driving the working platform 1;

and the sensor device is used for weighing the working platform 1 and is arranged between the rotating device 2 and the working platform 1.

Therefore, in the scheme of the application, the working platform 1 is directly arranged right above the swing mechanism 2 through the optimized design, and the purpose of weighing the platform load is achieved. Compared with the prior art shown in the figures 1 and 2, the weighing device has the advantages that a connecting bracket and the like are omitted, the length of the whole vehicle and the weight of the weighing mechanism can be relatively reduced, the design requirement of the whole vehicle is better met, and the structure compactness is higher. In addition, also do not have the field of vision blind area, operating personnel can avoid the collision accident through observing the distance of work platform outer terminal surface distance barrier when the revolving stage is operated, has promoted the operating safety nature.

The overhead working truck in the present embodiment is a motor vehicle capable of legally traveling on the road, that is, a blue-brand truck classified according to the difference in the total vehicle mass and length. Compared with the defect that a yellow-card vehicle needs to be applied in advance before entering a city and needs to be driven by a driver license with a B picture or more, the blue-card vehicle is more favored, but according to the requirements of national regulations, the total weight of the blue-card vehicle cannot exceed 4.5 tons, and the length of the whole vehicle cannot exceed 6 meters in a collection state, so the weight of the working platform 1 and a weighing mechanism thereof needs to be reduced as much as possible during structural design. But according to the scheme of the application, the purpose of weighing the platform load is obviously achieved, the structure is more compact, and the operation is safer.

In order to realize the specific installation of the sensor device and achieve the purpose of weighing the platform load, as shown in two specific embodiments of fig. 4 and 5, the sensor device comprises:

a weighing sensor 3; and

and the upper connecting plate 4 is connected with the bottom plate of the working platform 1 and the weighing sensor 3.

As shown in fig. 3, in the design process, according to the design requirement of the whole vehicle, the mounting position of the upper connecting plate 4 on the bottom plate of the working platform 1 can be adjusted, that is, the transverse distance between the center of the working platform 1 and the rotation center of the lower rotating device 2, that is, the transverse distance L shown in the figure, can be adjusted, so as to adjust the length of the whole vehicle. Specifically, under the condition that the length of the whole vehicle is ensured, the design requirement on the arm support can be reduced by reducing L as much as possible, and if the operation height needs to be increased, the L can be increased. It will be appreciated by those skilled in the art that the lateral spacing L may be specifically set as desired with consideration balanced during the structural design stage and will not be discussed further herein.

In particular, the floor of the work platform 1 may be provided with a plurality of floor attachment holes arranged at a distance from each other. As will be appreciated by those skilled in the art, the upper attachment plate 4 is attached to the work platform 1 by a plurality of first fasteners 11 that pass through respective base plate attachment holes. Obviously, when the work platform 1 is generally rectangular, the lateral distance L between the centre of the base plate of the work platform 1 and the centre of rotation of the slewing device 2 should not be more than half the lateral width of the work platform. As shown in fig. 3, the transverse distance L may be zero, but should be no greater than half of the transverse width of the working platform 1, that is, the upper connecting plate 4 cannot exceed the rear end surface of the working platform 1, so that the design of the relatively small transverse distance L can reduce the bending moment of the platform load on the arm support, and reduce the arm support load.

In the embodiment of fig. 4, load cell 3 is a single-point weighing disk-type load cell. The disc type weighing sensor is small in self weight, the upper portion of the disc type weighing sensor is connected with the upper connecting plate 4 through a plurality of second fasteners 12 which are arranged at intervals along the circumferential direction, and therefore the weight of the platform is uniformly transmitted to the disc type weighing sensor through the upper connecting plate 4. Wherein optionally, the disc-type weighing sensor is concentrically arranged with the rotating device 2, and further, when the transverse distance L is zero, the structural stability of the whole working platform 1 and the driving arm assembly 100 is optimal.

Further, referring to fig. 4, the weighing system of the present embodiment further includes:

the transition seat 5 is arranged between the disc type weighing sensor and the rotating device 2;

wherein, the transition seat 5 is connected with the lower part of the disc type weighing sensor through a plurality of third fasteners 13 arranged at intervals along the circumferential direction, and the transition seat 5 is connected with the upper part of the rotary device 2 through a plurality of fourth fasteners 14 arranged at intervals along the circumferential direction.

In this way, the detachable installation and the force transmission of the disc type weighing sensor can be conveniently and reliably realized by arranging the upper connecting plate 4 and the transition seat 5 and adopting a full-circle bolt connection mode. As will be appreciated by those skilled in the art, the rotating device 2 may generally adopt a motor-driven rotating speed reducer, and the rotating speed reducer drives the transition seat 5 to rotate integrally, so as to drive the disc-type weighing sensor, the upper connecting plate 4 and the working platform 1 to rotate integrally.

In another embodiment, as shown in fig. 5, the load cell 3 is a multi-point load cell of an cantilever beam type, and a plurality of cantilever beam type load cells arranged at intervals in the circumferential direction are connected to the upper connecting plate 4 by fifth fasteners 15, respectively. The present embodiment includes 4 outrigger type load cells arranged at intervals in the circumferential direction, but the number is not limited thereto.

Also, in this embodiment, the weighing system includes:

the lower connecting plate 7 is arranged between the cantilever beam type weighing sensor and the rotating device 2;

the plurality of cantilever beam type weighing sensors are respectively connected with the lower connecting plate 7 through sixth fasteners 16, and the lower connecting plate 7 is connected with the upper portion of the slewing device 2 through a plurality of seventh fasteners 17.

The weight of the working platform 1 can be transmitted to a cantilever beam type weighing sensor for multi-point weighing through the upper connecting plate 4, and then is integrally connected and supported to the rotating device 2 through the lower connecting plate 7.

In particular, in the respective embodiments of fig. 4, 5, the weighing system comprises:

and the leveling seat 6 is used for leveling the rotating device 2.

The levelness of the weighing sensor 3 and the working platform 1 can be ensured by leveling the rotating device 2 through the leveling seat 6, the weighing measurement is more accurate, and the structural safety is higher. It will be understood by those skilled in the art that such a leveling base 6 may be, for example, a leveling plate with multi-point liftable supports, or may be any other structure as long as it can effectively level the slewing device 2 and the load cell 3 above.

In case of providing the leveling seat 6, the swivel device 2 may be mounted at the top end of the leveling seat 6 and fastened by a plurality of eighth fastening members 18. It should be noted that, in the present application, a multi-layer connection manner is adopted, wherein each fastener (such as the first fastener 11, the second fastener 12, the third fastener 13, the fourth fastener 14, the fifth fastener 15, the sixth fastener 16, the seventh fastener 17, the eighth fastener 18, etc.) can adopt a loose-proof fastening bolt of a corresponding specification, and so on.

In addition, the application also discloses an aerial working platform. As shown in figure 6, the illustrated aerial lift vehicle includes a drive arm assembly 100 and a weighing system for the aerial lift vehicle described above, mounted at the distal end of the drive arm assembly 100.

Because this application installs weighing sensor 3 in work platform 1 below to operating personnel does not have the field of vision blind area, when the revolving stage was operated, can be through observing the outer terminal surface of work platform 1 apart from the distance of barrier, in order to avoid the collision accident. In addition, the installation position between the working platform 1 and the upper connecting plate 4 can be adjusted in the design stage of the whole vehicle, so that the transverse distance L between the center of the working platform and the rotation center is adjusted, on one hand, the bending moment of the platform load on the arm support and the arm support load can be reduced, the design requirement of the arm support is reduced, on the other hand, the length of the whole vehicle can be guaranteed not to exceed 6 meters, and the requirement of the blue plate on the road is met.

As is well known to those skilled in the art, vehicles can be classified into blue-brand vehicles and yellow-brand vehicles according to the mass and length of the whole vehicle. The yellow-card vehicle has the defects that the yellow-card vehicle needs to be applied in advance before entering a city and needs to be driven by a driver with a B picture or more, so a user is more favored by the blue-card overhead working truck, but the total weight of the blue-card vehicle cannot exceed 4.5 tons according to requirements, and the length of the whole vehicle cannot exceed 6 meters in a storage state. The aerial work platform truck has the advantages that the weight of the working platform and the weight of the weighing mechanism of the working platform is reduced as much as possible through the optimized design of the rotary structure and the weighing structure of the working platform, the length of the whole truck is guaranteed not to exceed 6 meters as much as possible, and the requirement of a blue plate is met.

In the description of the present application, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying that the number of indicated technical features is indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. A weighing system for an aerial lift truck, the weighing system comprising:

a work platform (1);

the rotating device (2) is arranged right below the working platform (1) and is used for driving the working platform (1) to rotate;

and the sensor device is used for weighing the working platform (1) and is arranged between the rotating device (2) and the working platform (1).

2. The overhead working truck weighing system of claim 1, wherein the sensor arrangement comprises:

a load cell (3); and

and the upper connecting plate (4) is connected with the bottom plate of the working platform (1) and the weighing sensor (3).

3. The weighing system of the aerial lift truck as claimed in claim 2, characterized in that the upper connecting plate (4) is connected to the working platform (1) by means of a first fastening (11), the transverse distance (L) between the centre of the floor of the working platform (1) and the centre of rotation of the slewing device (2) being not more than half the transverse width of the working platform (1).

4. The weighing system of the aerial lift truck as claimed in claim 3, characterized in that the weighing sensor (3) is a disc-type weighing sensor for single-point weighing, the upper part of which is connected to the upper connection plate (4) by a plurality of second fastening members (12) arranged at intervals in the circumferential direction.

5. The aerial lift truck weighing system of claim 4, comprising:

the transition seat (5) is arranged between the disc type weighing sensor and the rotary device (2);

the transition seat (5) is connected with the lower part of the disc type weighing sensor through a plurality of third fasteners (13) arranged at intervals along the circumferential direction, and the transition seat (5) is connected with the upper part of the rotary device (2) through a plurality of fourth fasteners (14) arranged at intervals along the circumferential direction.

6. The weighing system of the aerial lift truck as claimed in claim 3, characterized in that the weighing cell (3) is an outrigger type weighing cell, and a plurality of the outrigger type weighing cells arranged at intervals in the circumferential direction are respectively connected to the upper connecting plate (4) by fifth fasteners (15).

7. The overhead working truck weighing system of claim 6, comprising:

a lower connection plate (7) arranged between the cantilever beam type weighing sensor and the slewing device (2);

the plurality of cantilever beam type weighing sensors are respectively connected with the lower connecting plate (7) through sixth fasteners (16), and the lower connecting plate (7) is connected with the upper portion of the rotary device (2) through a plurality of seventh fasteners (17).

8. The aerial lift truck weighing system of any one of claims 1 to 7, wherein the weighing system comprises:

and the leveling seat (6) is used for leveling the rotating device (2).

9. Weighing system for aerial lift trucks according to claim 8, characterised in that said swivelling means (2) are mounted on the top end of the levelling seat (6) and are fastened by means of a plurality of eighth fasteners (18).

10. An aerial lift truck comprising a drive arm assembly (100), characterized in that the aerial lift truck further comprises a weighing system of the aerial lift truck according to any one of claims 1 to 9, the weighing system being mounted at the distal end of the drive arm assembly (100).