CN216613947U

CN216613947U - Aerial platform operation car with weighing device

Info

Publication number: CN216613947U
Application number: CN202122409161.4U
Authority: CN
Inventors: 赵国庆; 张照良; 侯启臣; 李习鑫; 马希阳
Original assignee: Lingong Group Jinan Heavy Machinery Co Ltd
Current assignee: Lingong Heavy Machinery Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-05-27
Anticipated expiration: 2031-09-30

Abstract

The utility model provides an aerial platform working vehicle with a weighing device, which comprises: the hydraulic oil tank is arranged in the vehicle body; the top end of the pushing force arm is connected with the working platform and lifts the working platform, and the bottom end of the pushing force arm is connected with the vehicle body; the oil cylinder is connected with the pushing force arm and pushes the pushing force arm to move upwards, and the oil cylinder is connected with the hydraulic oil tank through a pipeline; the pressure detection device is arranged on the oil cylinder and used for detecting the pressure of the oil cylinder; the temperature detection device is connected with the pipeline; the controller, the pressure detection device and the temperature detection device are all electrically connected with the controller. It is through installing temperature-detecting device on the pipeline, is favorable to the temperature of the interior hydraulic oil of real-time supervision and reaction hydro-cylinder, not only is favorable to installing temperature-detecting device, also can carry out quick replacement and inspection to it. The position of the temperature detection device is more flexible, so that the weighing device is simpler in structure.

Description

Aerial platform operation car with weighing device

Technical Field

The application belongs to the technical field of aerial work, and particularly relates to an aerial platform work vehicle with a weighing device.

Background

At present, the aerial platform operation vehicle is widely used for aerial operation, equipment installation, maintenance and the like in various industries. Various aerial platform operating vehicles use hydraulic transmission or are influenced by hydraulic transmission no matter arm type aerial operating platforms, mast type aerial operating platforms or scissor type aerial operating platforms are adopted. However, different working areas, different renting and terminal using customers and the like result in large working condition difference and north-south temperature difference of the aerial work platform, large seasonal difference temperature change, and large influence of temperature on viscosity of hydraulic oil used in a hydraulic system of the aerial work platform, especially in a weighing system mainly based on pressure. If the pressure obtained by the system is not accurate, the platform load sensed by the system will be very different. This would create a significant safety hazard.

In CN109553040A in the prior art, an aerial platform truck and a method for detecting the bearing weight of the aerial platform truck are proposed, which are in signal connection with a pressure detection device and a height detection device through a weight detection device, and a corresponding relationship curve between the pressure of a large cavity, the lifting height and the bearing weight of an aerial platform is stored in advance, so as to calculate the bearing weight of the aerial platform according to an actual pressure value detected by the pressure detection device, the lifting height value detected by the height detection device and the corresponding relationship curve.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-altitude platform truck with a weighing device, which not only can realize real-time monitoring of the temperature of hydraulic oil of an oil cylinder, but also can realize convenient and quick installation of a temperature detection device and improve the measurement accuracy of the weighing device.

In order to solve the above problems, the present invention provides an aerial platform working vehicle with a weighing device, comprising: the hydraulic oil tank is arranged in the vehicle body; the top end of the pushing force arm is connected with the working platform and lifts the working platform, and the bottom end of the pushing force arm is connected with the vehicle body; the oil cylinder is connected with the pushing force arm and pushes the pushing force arm to move upwards, and the oil cylinder is connected with the hydraulic oil tank through a pipeline; the pressure detection device is arranged on the oil cylinder and used for detecting the pressure of the oil cylinder; the temperature detection device is connected with the pipeline; the controller, the pressure detection device and the temperature detection device are all electrically connected with the controller.

Furthermore, the automobile body is provided with a temperature measurement port, and the temperature detection device is arranged at the temperature measurement port.

Further, a flange is arranged at the joint of the pipeline and the temperature detection device.

Further, temperature-detecting device includes connecting pipe body, temperature sensor, sets up the mount pad in the connecting pipe body outside, and the mount pad is installed and is stretched into this internal temperature sensor of connecting pipe.

Furthermore, one end of the connecting pipe body is connected with the hydraulic oil tank, and the other end of the connecting pipe body is connected with the pipeline.

Furthermore, the connecting pipe body is provided with a helical blade at the temperature sensor.

Furthermore, the connecting pipe body is provided with an inner bulge at the temperature sensor.

Furthermore, the connecting pipe body is provided with internal threads at the temperature sensor.

Further, the temperature detection device also comprises a protective sleeve sleeved on the temperature sensor.

Further, the pressure detection device comprises a first pressure sensor and a second pressure sensor, the oil cylinder comprises a rod cavity pressure measuring port, a rodless cavity pressure measuring port and a piston rod, the first pressure sensor is arranged at the rod cavity pressure measuring port, the second pressure sensor is arranged at the rodless cavity pressure measuring port, when the piston rod extends out, the first pressure sensor is electrically connected with the controller, and when the piston rod contracts, the second pressure sensor is electrically connected with the controller.

The utility model has the beneficial effects that: through installing temperature-detecting device on the pipeline, can measure the temperature of hydraulic oil in the pipeline, be favorable to the temperature of hydraulic oil in real-time supervision and the reaction hydro-cylinder, not only be favorable to installing temperature-detecting device, also can carry out quick replacement and inspection to it. The position of the temperature detection device is more flexible, so that the weighing device is simpler in structure. The pressure value and the temperature value of hydraulic oil in the oil cylinder are measured, the measured signal value is transmitted to the controller, the control module converts the pressure of the oil cylinder after the pressure compensation value at the current temperature is removed into the load capacity of the platform through certain logic operation, the influence on the load capacity of the platform under different temperatures and working states is avoided, the measuring accuracy of the weighing device and the application range of the aerial platform operation vehicle are improved, and the aerial platform operation vehicle is protected to a certain extent.

Drawings

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

fig. 1 is a schematic front view of a high-altitude platform operation vehicle with a weighing device provided by the utility model.

FIG. 2 is a partial cross-sectional structural view of one embodiment of a temperature sensing device.

FIG. 3 is a schematic structural diagram of a connection relationship of a partial structure in the embodiment shown in FIG. 1.

Fig. 4 is a schematic perspective view of the flip-up handle in the embodiment shown in fig. 1.

Fig. 5 is a partial sectional structural view of another embodiment of a temperature sensing device.

Fig. 6 is a partial sectional structural view of another embodiment of a temperature sensing device.

Fig. 7 is a partial sectional structural view of a temperature detection device including a protective sleeve.

Fig. 8 is a schematic front view of an embodiment of an oil cylinder.

Fig. 9 is a schematic view of a part of a cross-sectional structure of a pipeline connected with a temperature detection device through a flange.

Wherein, 1, a vehicle body; 2. a controller; 3. a pressure detection device; 301. a first pressure sensor; 302. A second pressure sensor; 4. an oil cylinder; 401. a rod cavity pressure port; 402. a rodless chamber pressure tap; 403. A piston rod; 5. a force arm is lifted; 6. a working platform; 7. a temperature detection device; 701. a connecting pipe body; 702. a temperature sensor; 703. a mounting base; 704. a helical blade; 705. an inner protrusion; 706. an internal thread; 707. protecting the sleeve; 8. a temperature measuring port; 9. a hydraulic oil tank; 10. a pipeline.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it is to be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 utility model. 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.

Fig. 1 is a schematic embodiment of an aerial platform work vehicle having a weighing apparatus, as shown in fig. 1-9, comprising: the working platform 6, the vehicle body 1 and a hydraulic oil tank 9 arranged in the vehicle body 1; the top end of the pushing force arm 5 is connected with the working platform 6 and lifts the working platform 6, and the bottom end of the pushing force arm 5 is connected with the vehicle body 1; the oil cylinder 4 is connected with the pushing force arm 5 and pushes the pushing force arm 5 to move upwards, and the oil cylinder 4 is connected with a hydraulic oil tank 9 through a pipeline 10; the pressure detection device 3 is arranged on the oil cylinder 4 and used for detecting the pressure of the oil cylinder 4; the temperature detection device 7 is connected with the pipeline 10; the controller 2, the pressure detection device 3 and the temperature detection device 7 are all electrically connected with the controller 2.

Taking a scissor-type aerial platform working vehicle as an example, when the aerial platform working vehicle works under a load, the aerial platform is lifted by unfolding or folding a scissor-type supporting frame, the scissors are pushed to unfold and fold by the telescopic motion of an oil cylinder 4, a pressure detection device 3 arranged on the oil cylinder 4 measures the pressure value of hydraulic oil in the working process and transmits a signal value to a controller 2, a temperature sensor 702 connected in a pipeline 10 reflects the temperature of the hydraulic oil in the oil cylinder 4 at that time by detecting the temperature of the hydraulic oil in the pipeline 10 and transmits a temperature value to the controller 2, and the controller 2 calculates the load capacity of the working platform 6 after the pressure of the oil cylinder 4 is removed by the pressure of the hydraulic oil at the current temperature through certain logic operation.

By installing the temperature detection device 7 on the pipeline 10, the temperature of the hydraulic oil in the pipeline 10 can be measured, which is beneficial to monitoring and reacting the temperature of the hydraulic oil in the oil cylinder 4 in real time. It is not only advantageous for the temperature detection means 7 to be mounted, but also for the temperature detection means 7 to be quickly replaced and checked. Compared with other installation modes, the connection mode is more flexible in position for the temperature detection device 7, so that the weighing device is simpler in structure.

Specifically, the pressure compensation value at the current temperature is an actual pressure value at a preset temperature corresponding to the corresponding relationship curve obtained by converting the signal value of the temperature sensor 702 and the viscosity characteristic of the hydraulic oil at the current temperature through the controller 2, and the load bearing weight of the operation platform is calculated according to a certain logic from the pressure value obtained by the pressure sensor. Of course, the connection mode is not only suitable for the scissor-type aerial work platform, the arm-type aerial work platform, the mast-type aerial work platform or the scissor-type aerial work platform, but also suitable for various aerial work platform work vehicles which use hydraulic transmission or are influenced by the hydraulic transmission.

More specifically, as shown in fig. 1, the vehicle body 1 is provided with a temperature measurement port 8, and the temperature detection device 7 is provided at the temperature measurement port 8. The temperature measuring port 8 is independently arranged on the vehicle body 1, so that the temperature detecting device 7 can be conveniently installed and replaced, and meanwhile, the working state of the temperature detecting device 7 can be observed through the temperature measuring port 8.

It should be further noted that a flange is provided at the connection of the pipeline 10 and the temperature detection device 7 as shown in fig. 9. Through flange joint's mode for temperature-detecting device 7 links together in pipeline 10 more firmly, avoids hydraulic oil pressure too big, leads to pipeline 10 and temperature-detecting device 7 to be connected unstably, and the temperature detect value is inaccurate, but also can cause hydraulic oil to leak.

In another embodiment, as shown in fig. 2, temperature detecting device 7 includes a connection pipe body 701, a temperature sensor 702, and a mounting seat 703 disposed outside connection pipe body 701, and temperature sensor 702 extending into connection pipe body 701 is mounted on mounting seat 703. The mounting base 703 and the temperature sensor 702 may be connected by a screw thread or other connection means. The mount 703 is selected to be integrally formed with the connecting pipe body 701, so that direct punching or threaded connection between the connecting pipe body 701 and the temperature sensor 702 can be avoided, cracks or damages are easily generated on the connecting pipe body 701, and the safety performance and the service life of the connecting pipe body 701 are affected.

It should be further noted that, as shown in fig. 3, one end of the connecting pipe body 701 is connected to the hydraulic oil tank 9, and the other end is connected to the pipeline 10. If the hydraulic oil tank 9 is connected to the pipeline 10, there are a plurality of installation errors in the connection manner of the pipeline 10 and the two ends of the connection pipe body 701, the stability of the hydraulic oil loop may be affected at the connection point, and the leakage of the hydraulic oil may occur at the connection point. This can avoid a plurality of mounting errors by improving the accuracy of both ends of the connecting pipe body 701.

Specifically, as shown in fig. 6, the connection pipe body 701 is provided with a spiral blade 704 at the temperature sensor 702. When hydraulic oil flows through the spiral blade 704, the rotation of the spiral blade 704 drives the hydraulic oil at the temperature sensor 702 to be fused together, so that the temperature is more uniform, and the detection result is more accurate. The spiral blade 704 can be arranged in a round pipe, four mutually perpendicular pillars are arranged on one side of the round pipe, the spiral blade 704 is arranged on the intersection points of the four pillars, and the round pipe is welded with the inner wall of the connecting pipe body 701.

In other embodiments, as shown in fig. 4 and 5, the connecting tube body 701 is provided with an internal protrusion 705 at the temperature sensor 702. Or the connection pipe body 701 is provided with an internal thread 706 at the temperature sensor 702. This achieves the above-mentioned effects.

In order to prevent the temperature sensor 702 from being cracked due to excessive pressure during operation, as shown in fig. 7, the temperature detection device 7 further includes a protection sleeve 707 covering the temperature sensor 702.

Of course, the temperature sensor 702 may be selected as the thermal resistance temperature sensor 702, and in order to reduce the measurement error during the actual installation, the thermal resistance temperature sensor 702 should have a sufficient insertion depth, and may be installed vertically or obliquely. To reduce the resistance of the protective sleeve 707 to fluid and prevent it from breaking under the action of fluid, shallow insertion or thermal sleeve type resistors may be used.

It should be further noted that, as shown in fig. 8, the pressure detection device 3 includes a first pressure sensor 301 and a second pressure sensor 302, the oil cylinder 4 includes a rod cavity pressure port 401, a rod-free cavity pressure port 402 and a piston rod 403, the first pressure sensor 301 is disposed at the rod cavity pressure port 401, the second pressure sensor 302 is disposed at the rod-free cavity pressure port 402, when the piston rod 403 is extended, the first pressure sensor 301 is electrically connected to the controller, and when the piston rod 403 is retracted, the second pressure sensor 302 is electrically connected to the controller. When the piston rod 403 extends out, the working platform 6 rises, the loaded rodless cavity is a pressure cavity, the second pressure sensor 302 measures the pressure of hydraulic oil in the rodless cavity at the pressure measuring port 402 of the rodless cavity and transmits a signal to the controller 2, and the controller 2 calculates the load capacity of the working platform 6 according to the pressure compensation value of the current temperature. When the piston rod 403 contracts, the working platform 6 descends, the loaded rod cavity is a pressure cavity, the first pressure sensor 301 works and transmits the measured pressure value of the rod cavity to the controller 2, and the load capacity of the working platform 6 in the descending process is calculated by the controller 2. Therefore, the load capacity of the working platform 6 at the current temperature can be measured no matter the working platform ascends or descends, no matter the working platform is in a moving process or in a static state, real-time monitoring of the working platform is achieved, and potential safety hazards are avoided.

Certainly, the aerial work platform truck can also be provided with an alarm device which is connected with the controller 2 and used for sending an alarm prompt signal or sending a signal for unloading the oil cylinder 4 when the controller 2 calculates that the bearing weight of the work platform 6 exceeds the rated bearing weight. By arranging the alarm device, protective measures can be taken in time during overload, and the safety of the aerial work platform truck is improved.

The first embodiment is as follows:

through pressure detection device 3 and temperature sensor 702, measure the pressure of 4 hydraulic oils of hydro-cylinder and the temperature of hydraulic oil, obtain the pressure value and be 120, the temperature value is 40, transmits controller 2, and controller 2 converts the temperature value into the pressure compensation value under the current temperature and is 0, and controller 2 converts it into the load of platform, 360KG promptly.

Example two:

through pressure detection device 3 and temperature sensor 702, measure the pressure of 4 hydraulic oils of hydro-cylinder and the temperature of hydraulic oil, obtain the pressure value and be 130, the temperature value is 0, transmits controller 2, and controller 2 converts the temperature value into the pressure compensation value under the current temperature and is 10, and controller 2 converts it into the load of platform, 360KG promptly.

The method can be realized by adopting or referring to the prior art in places which are not described in the utility model.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above are merely examples of the present invention, and are not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides an aerial platform operation car with weighing device, includes work platform, automobile body and sets up the hydraulic oil tank in the automobile body, its characterized in that includes:

the top end of the pushing force arm is connected with the working platform and lifts the working platform, and the bottom end of the pushing force arm is connected with the vehicle body;

the oil cylinder is connected with the pushing force arm and pushes the pushing force arm to move upwards, and the oil cylinder is connected with the hydraulic oil tank through a pipeline;

the pressure detection device is arranged on the oil cylinder and used for detecting the pressure of the oil cylinder;

the temperature detection device is connected with the pipeline;

and the pressure detection device and the temperature detection device are electrically connected with the controller.

2. The aerial platform work vehicle with the weighing device as in claim 1, wherein the vehicle body is provided with a temperature measuring port, and the temperature detecting device is arranged at the temperature measuring port.

3. The aerial platform work vehicle with a weighing device of claim 1, wherein a flange is provided at a connection of the pipeline and the temperature detection device.

4. The aerial platform work platform with the weighing device as claimed in claim 1, wherein the temperature detection device comprises a connecting pipe body, a temperature sensor and a mounting seat arranged on the outer side of the connecting pipe body, and the mounting seat is provided with the temperature sensor extending into the connecting pipe body.

5. The aerial platform work vehicle with the weighing device as claimed in claim 4, wherein one end of the connecting pipe body is connected with the hydraulic oil tank, and the other end of the connecting pipe body is connected with the pipeline.

6. The aerial platform work platform with the weighing device of claim 4, wherein the connecting tube body is provided with a helical blade at the temperature sensor.

7. The aerial platform work platform with the weighing device of claim 4, wherein the connecting tube body is provided with an internal protrusion at the temperature sensor.

8. The aerial platform work platform with the weighing device of claim 4, wherein the connecting tube body is provided with internal threads at the temperature sensor.

9. The aerial platform work vehicle with a weighing device of claim 4, wherein the temperature detection device further comprises a protective sleeve that is sleeved over the temperature sensor.

10. The aerial platform work vehicle with a weighing device of claim 1, wherein the pressure detection device comprises a first pressure sensor and a second pressure sensor, the cylinder comprises a rod cavity pressure port, a rodless cavity pressure port and a piston rod, the first pressure sensor is disposed at the rod cavity pressure port, the second pressure sensor is disposed at the rodless cavity pressure port, the first pressure sensor is electrically connected to the controller when the piston rod is extended, and the second pressure sensor is electrically connected to the controller when the piston rod is retracted.