WO2023077580A1 - Single suspension frame test bench and weighing device thereof - Google Patents

Abstract

A single suspension frame test bench and a weighing device thereof. The weighing device of a single suspension frame test bench comprises: a first connecting plate (1) used for connecting to a working platform; a second connecting plate (2) used for connecting to a suspension frame; a weighing sensor (11) located between the first connecting plate (1) and the second connecting plate (2); a first bearing piece (7) that connects the first connecting plate (1) and the second connecting plate (2) and that may bear an X-direction acting force; and a second bearing piece (8) that connects the first connecting plate (1) and the second connecting plate (2) and that may bear a Y-direction acting force. The weighing sensor (11) is used for measuring the pressure between the first connecting plate (1) and the second connecting plate (2); and the X direction and the Y direction are perpendicular to one another, and both the X direction and the Y direction are perpendicular to the pressure direction that is borne by the weighing sensor (11). The weighing device of a single suspension frame test bench may meet the requirements for a load-imbalance experiment, so that a load-imbalance experiment may be carried out.

Description

Single-suspension frame test bench and its weighing device

This application claims the priority of the Chinese patent application with the application number 202111293161.0 and the title of the invention "Single Suspension Rack Test Bench and Its Weighing Device" filed with the China Patent Office on November 03, 2021, the entire contents of which are hereby incorporated by reference In this application.

technical field

The invention relates to the technical field of magnetic suspension, and more specifically relates to a single-suspension frame test bench and a weighing device thereof.

Background technique

At present, the software and hardware research and test platform for the suspension control system of medium and low-speed maglev trains is a single suspension frame test platform. The single-suspension frame test bench has the function of suspending on the test line, and the single-suspension frame test bench can stably suspend under various working conditions such as static, accelerated, decelerated, and constant speed.

The above-mentioned single-suspension frame test bench includes a load cell to know the weight in real time. When testing the suspension control system software of medium and low-speed maglev trains, it is necessary to carry out research on related eccentric load experiments. Since the vehicle is in a moving state during the suspension traction test, the longitudinal force of traction and braking will be stored during acceleration, braking and curve steering. However, the load cell can only bear the pressure, and cannot bear the force in other directions, so it cannot meet the requirements of the partial load test, that is, the partial load test cannot be carried out.

To sum up, how to provide a weighing device for a test bench with a single suspension frame to meet the requirements of the eccentric load test is an urgent problem to be solved by those skilled in the art.

Contents of the invention

The purpose of the present invention is to provide a weighing device for a single-suspension-frame test bench, which can meet the requirements of the eccentric load test. Another object of the present invention is to provide a single-suspension-frame test bench comprising the above-mentioned weighing device.

In order to achieve the above object, the present invention provides the following technical solutions:

A weighing device for a test bench with a single suspension frame, comprising: a first connection plate for connecting with a working platform, a second connection plate for connection with a suspension frame, located between the first connection plate and the second The load cell between the connecting plates, the first bearing member that connects the first connecting plate and the second connecting plate and can bear the force in the X direction, connects the first connecting plate and the second connecting plate And the second bearing member capable of bearing the force in the Y direction;

Wherein, the load cell is used to detect the pressure between the first connecting plate and the second connecting plate; the X direction and the Y direction are perpendicular, and both the X direction and the Y direction are perpendicular to the load cell. The direction of the pressure to bear.

Optionally, the first bearing part is parallel to the X direction, and the second bearing part is parallel to the Y direction.

Optionally, one end of the first carrier is hingedly connected to the first connecting plate, and the other end of the first carrier is hingedly connected to the second connecting plate;

One end of the second carrier is hingedly connected to the first connecting plate, and the other end of the second carrier is hingedly connected to the second connecting plate.

Optionally, the first connecting plate is fixed with a first connecting piece and a second connecting piece, and the second connecting plate is fixed with a third connecting piece and a fourth connecting piece;

One end of the first carrier is hinged to the first connector, and the other end of the first carrier is hinged to the third connector;

One end of the second carrier is hinged to the second connecting member, and the other end of the second carrier is hinged to the fourth connecting member.

Optionally, the weighing device of the single-suspension frame test bench further includes a conductive member connecting the first connecting plate and the second connecting plate.

Optionally, one end of the conductive element is fixedly connected to the first connection plate, the other end of the conductive element is fixedly connected to the second connection plate, and the conductive element is a flexible element.

Optionally, the conductive member is U-shaped.

Optionally, the weighing device of the single-suspension frame test bench further includes a limiting column located between the first connecting plate and the second connecting plate, and the limiting column is used to limit the first connecting plate. The distance between the connecting plate and the second connecting plate.

Optionally, the position of the first connecting plate on the limiting post is adjustable, and/or the position of the second connecting plate on the limiting post is adjustable.

Optionally, the first connecting plate is provided with a first threaded hole, and the limiting post has a first stud threaded with the first threaded hole;

The second connecting plate is provided with a second threaded hole, and the limiting column has a second stud threadedly engaged with the second threaded hole.

Optionally, the weighing device of the single suspension frame test bench also includes:

a bearing column, the bearing column is fixedly connected to the second connecting plate, and the second connecting plate is used to connect with the suspension frame through the bearing column;

And/or a transmitter, the transmitter is used to convert the pressure signal of the load cell into a weight signal.

In the weighing device of the single-suspension frame test bench provided by the present invention, since the first bearing member connects the first connecting plate and the second connecting plate and can bear the X-direction force, the second bearing member connects the first connecting plate and the second connecting plate. The connecting plate can bear the force in the Y direction, then the above-mentioned first bearing can bear the force in the X direction between the first connecting plate and the second connecting plate, and the second bearing can bear the first connecting plate and the second connecting plate The force in the Y direction between them; since the X direction and the Y direction are vertical, and both the X direction and the Y direction are perpendicular to the pressure direction of the load cell, the first connecting plate is used to connect with the working platform, and the second connecting plate is used to If it is connected with the suspension frame, it can make the above-mentioned first bearing part and the second bearing part able to bear the traction and braking longitudinal force generated by the vehicle in motion, thus avoiding the load cell from carrying the above-mentioned traction and braking force The longitudinal force effectively ensures that the load cell detects the pressure between the first connecting plate and the second connecting plate, thereby indirectly obtaining the weight, which can meet the requirements of the eccentric load test, so that the eccentric load test can be carried out.

Based on the weighing device of the single-suspension-frame test bench provided above, the present invention also provides a single-suspension-frame test bench, which includes a weighing device, and the weighing device is any one of the above-mentioned weighing device.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is the structural representation of the weighing device of the single suspension frame test bench that the embodiment of the present invention provides;

Fig. 2 is a partial structural schematic diagram of the weighing device of the single suspension frame test bench provided by the embodiment of the present invention;

Fig. 3 is a structural schematic diagram of another direction of the structure shown in Fig. 2;

Fig. 4 is a structural schematic view of another direction of the structure shown in Fig. 2;

Fig. 5 is a diagram of the relationship between the load cell and the transmitter in the weighing device of the single-suspension frame test bench provided by the embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1-4, the weighing device of the single suspension frame test bench provided by the embodiment of the present invention includes: a first connecting plate 1, a second connecting plate 2, a load cell 11, a first bearing member 7, and a second connecting plate Two bearing parts 8 .

The above-mentioned first connecting plate 1 is used for connecting with the working platform, the second connecting plate 2 is used for connecting with the suspension frame, the load cell 11 is located between the first connecting plate 1 and the second connecting plate 2, and the first carrier 7 is connected The first connecting plate 1 and the second connecting plate 2 can bear the force in the X direction, and the second bearing 8 connects the first connecting plate 1 and the second connecting plate 2 and can bear the force in the Y direction.

It should be noted that the above working platform is the on-board part of the maglev train.

The above load cell 11 is used to detect the pressure between the first connecting plate 1 and the second connecting plate 2; wherein, the X direction and the Y direction are vertical, and both the X direction and the Y direction are perpendicular to the pressure on the load cell 11 direction. Therefore, the X and Y directions are the traction and braking longitudinal forces generated by the vehicle in motion.

In the weighing device of the above-mentioned single-suspension frame test bench, one end of the load cell 11 is connected to the first connection plate 1 , and the other end of the load cell 11 is connected to the second connection plate 2 .

In the weighing device of the single-suspension test bench provided by the embodiment of the present invention, since the first bearing member 7 is connected to the first connecting plate 1 and the second connecting plate 2 and can carry the force in the X direction, the second bearing member 8 is connected to the second connecting plate 2. One connecting plate 1 and the second connecting plate 2 can carry the force in the Y direction, then the above-mentioned first bearing 7 can bear the force in the X direction between the first connecting plate 1 and the second connecting plate 2, and the second bearing 8 can withstand the force in the Y direction between the first connecting plate 1 and the second connecting plate 2; since the X direction and the Y direction are vertical, and both the X direction and the Y direction are perpendicular to the pressure direction of the load cell 11, the first One connecting plate 1 is used for connecting with the working platform, and the second connecting plate 2 is used for connecting with the suspension frame, so that the above-mentioned first carrier 7 and the second carrier 8 can carry the traction and The longitudinal force of braking, thereby avoiding the load cell 11 from carrying the above-mentioned longitudinal force of traction and braking, effectively ensuring that the load cell 11 detects the pressure between the first connecting plate 1 and the second connecting plate 2, thereby indirectly obtaining The weight can meet the requirements of the eccentric load test, so that the eccentric load test can be carried out.

For the types of the above-mentioned first bearing 7 and the second bearing 8, select according to actual needs, for example, the above-mentioned first bearing 7 and the second bearing 8 are both pull rods or pull plates, etc., which are not done in this embodiment limited.

The shape and structure of the first connecting plate 1 and the second connecting plate 2 can be selected according to actual needs. For example, the above-mentioned first connecting plate 1 and the second connecting plate 2 are both square, which is not limited in this embodiment.

In order to facilitate installation, the above-mentioned first connecting plate 1 is used to be fixedly connected to the working platform through the first threaded connector. Specifically, the first connecting plate 1 is provided with a first mounting hole for being fixedly connected to the working platform. The connecting piece passes through the above-mentioned first installation hole.

Correspondingly, the second connecting plate 2 is used for fixed connection with the suspension frame through the second threaded connection piece, specifically, the second connection plate 2 is provided with a second installation hole for fixed connection with the suspension frame, and the second threaded connection piece passes through through the second mounting hole.

The number and shape of the first installation hole and the second installation hole are selected according to actual needs, which is not limited in this embodiment.

In practical application, it is only necessary to fix the first connecting plate 1 to the working platform and the second connecting plate 2 to the suspension frame, which facilitates and simplifies installation and disassembly.

In order to facilitate the first bearing 7 to bear the force in the X direction and the second bearing 8 to bear the force in the Y direction, the first bearing 7 can be selected to be parallel to the X direction, and the second bearing 8 can be selected to be parallel to the Y direction.

In order to facilitate the bearing of the X-direction force and the Y-direction force, one end of the above-mentioned first bearing member 7 can be selected to be hingedly connected to the first connecting plate 1, and the other end of the first bearing member 7 is hingedly connected to the second connecting plate 2; One end of the second carrier 8 is hingedly connected to the first connecting plate 1 , and the other end of the second carrier 8 is hingedly connected to the second connecting plate 2 .

In the weighing device of the above-mentioned single-suspension frame test bench, since the first carrier 7 and the second carrier 8 are hingedly arranged, it is convenient for the first carrier 7 to carry the X-direction force, and the second carrier 8 carries the Y-direction force. ; At the same time, the tendency of relative displacement between the first connecting plate 1 and the second connecting plate 2 is also limited, and the detection accuracy of the load cell 11 is improved.

In order to facilitate hinged arrangement, the above-mentioned first connecting plate 1 is fixed with a first connecting piece 3 and a second connecting piece 4, and the second connecting plate 2 is fixed with a third connecting piece 5 and a fourth connecting piece 6; One end is hinged to the first connector 3, and the other end of the first carrier 7 is hinged to the third connector 5; one end of the second carrier 8 is hinged to the second connector 4, and the other end of the second carrier 8 is hinged to the The fourth connecting piece 6 .

In the above situation, both the first connecting plate 1 and the second connecting plate 2 can be selected as flat plates; at the same time, it is also convenient for the above-mentioned first carrier 7 to be parallel to the X direction, and the second carrier 8 to be parallel to the Y direction. Specifically, the above-mentioned first The length direction of the bearing member 7 is parallel to the X direction, and the length direction of the second bearing member 8 is parallel to the Y direction.

In actual application, the above-mentioned first carrier 7 can also be arranged on the first connecting plate 1 in other ways, and the second carrier 8 can be arranged on the second connecting plate 2 in other ways, not limited to the above-mentioned hinged Way.

During the use of the weighing device of the above-mentioned single-suspension frame test bench, the static electricity on the working platform is more likely to reach the load cell 11 and affect the detection of the load cell 11 . In order to avoid the above-mentioned problems, the weighing device of the weighing device of the above-mentioned single-suspension frame test bench may also include a conductive member 12 connecting the first connecting plate 1 and the second connecting plate 2 .

It can be understood that the above-mentioned conductive member 12 is used for electrical conduction between the first connection board 1 and the second connection board 2 . In this way, the above-mentioned conductive member 12 can lead static electricity to the second connecting plate 2 , and the static electricity can be led away through the second connecting plate 2 , avoiding the influence of static electricity on the load cell 11 and ensuring the accuracy of weighing.

Specifically, if the above-mentioned first connection plate 1 and the second connection plate 2 are metal plates, the above-mentioned conductive member 12 can also lead the static electricity generated by the first connection plate 1 to the second connection plate 2, through which the second connection plate 2 can Static electricity is led away, avoiding static electricity from affecting the load cell 11, and ensuring weighing accuracy.

The above-mentioned conductive element 12 may be metal or other conductive material, which is not limited in this embodiment.

The conductive element 12 and the first connecting plate 1 can be connected flexibly or fixedly, and the conductive element 12 and the second connecting plate 2 can be connected flexibly or fixedly. In order to improve reliability, one end of the conductive element 12 can be selected to be fixedly connected to the first connection plate 1 , and the other end of the conductive element 12 can be fixedly connected to the second connection plate 2 . In order to ensure that the first connecting board 1 and the second connecting board 2 have a tendency to move relative to each other, the above-mentioned conductive member 12 is a flexible member.

Optionally, the above-mentioned conductive member 12 is U-shaped, Z-shaped, or Z-shaped, etc., which is not limited in this embodiment. In order to improve flexibility, the conductive member 12 may be selected to be U-shaped.

In order to fix the conductive member 12 conveniently, one end of the conductive member 12 is connected to the first connecting plate 1 by bolts, and the other end of the conductive member 12 is connected to the second connecting plate 2 by bolts. Of course, one end of the conductive member 12 can also be selected to be clamped to the first connecting plate 1 , and the other end of the conductive member 12 to be clamped to the second connecting plate 2 , which is not limited to the above embodiment.

The above-mentioned load cell 11 is arranged between the first connection plate 1 and the second connection plate 2 , in order to facilitate the installation of the load cell 11 , it is necessary to adjust the distance between the first connection plate 1 and the second connection plate 2 . In order to ensure the distance between the first connecting plate 1 and the second connecting plate 2, the weighing device of the above-mentioned single suspension frame test bench can be selected to also include a limit position between the first connecting plate 1 and the second connecting plate 2 Column 10 , the limiting column 10 is used to limit the distance between the first connecting plate 1 and the second connecting plate 2 .

There can be one or more than two limit posts 10, which are selected according to actual needs. Optionally, there are an even number of the limit posts 10 and they are respectively located on both sides of the load cell 11 . In this way, the balance is improved. In order to simplify the structure, the above-mentioned limiting posts 10 may be selected to be two.

In actual application, other numbers of the above-mentioned limiting columns 10 can also be selected and distributed in other ways, and are not limited to the above-mentioned embodiments.

In order to be able to adjust the distance between the first connecting plate 1 and the second connecting plate 2, the position of the first connecting plate 1 on the limit post 10 can be selected to be adjustable, and/or the second connecting plate 2 can be placed on the limit post. The position on the 10 is adjustable. Certainly, the height of the above-mentioned limit post 10 can also be adjusted, and is not limited to the above-mentioned embodiment.

In order to facilitate the adjustment of the position of the first connecting plate 1 on the limit post 10, the first connecting plate 1 can be selected to be provided with a first threaded hole 101, and the limit post 10 has a first screw threaded with the first threaded hole 101. stud.

Correspondingly, in order to realize the adjustable position of the second connecting plate 2 on the limiting column 10, the second connecting plate 2 can be selected to be provided with a second threaded hole, and the limiting column 10 has a first screw threaded with the second threaded hole. Two studs. Optionally, the aforementioned limiting post 10 is a threaded post.

In actual application, the position can also be adjusted through other structures. For example, the limit post 10 is provided with at least two first clamping positions for clamping with the first connecting plate 1, and the first connecting plate 1 is clamped on the For different first clamping positions, the position of the first connection 1 on the limit post 10 is different; the limit post 10 is provided with at least two second clamping positions for clamping with the second connecting plate 2, and the second connection When the board 2 is clamped in different second clamping positions, the positions of the second connecting board 2 on the limiting post 10 are different.

In order to facilitate installation, the weighing device of the above-mentioned single suspension frame test bench can be selected to further include a bearing column 9, which is fixedly connected to the second connecting plate 2, and the second connecting plate 2 is used for the suspension frame through the bearing column 9. connect.

The above-mentioned supporting column 9 can be one, or more than two, and can be selected according to actual needs. The specific structure and shape of the bearing column 9 can be selected according to actual needs, which is not limited in this embodiment.

In the weighing device of the above-mentioned single-suspension frame test bench, the load cell 11 is used to detect the pressure between the first connecting plate 1 and the second connecting plate 2, and can indirectly obtain the bearing capacity of the weighing device of the above-mentioned single-suspension frame test bench. the weight of. In order to obtain the weight conveniently, the weighing device of the above-mentioned single-suspension frame test bench further includes a transmitter, which is used to convert the pressure signal of the load cell 11 into a weight signal. It can be understood that the signal connection between the transmitter and the load cell 11 is shown in FIG. 5 .

In the above structure, one-to-one correspondence between the transmitters and the load cells 11 can be selected; all the load cells 11 can also be selected to share one transmitter, as shown in FIG. 5 , which is not limited in this embodiment.

Based on the weighing device of the single-suspension-frame test bench provided in the above-mentioned embodiment, the present embodiment also provides a single-suspension-frame test bench, which includes a weighing device, which is provided in the above-mentioned embodiment. The weighing device of the single-suspension frame test bench described above.

Because the weighing device of the single-suspension test bed provided by the above-mentioned embodiment has the above-mentioned technical effect, the above-mentioned single suspension test bed includes the weighing device of the above-mentioned single suspension test bed, and then the above-mentioned single suspension test bed also has corresponding technology effect, which will not be repeated here.

For the number of the above-mentioned weighing devices, select according to actual needs. Optionally, there are four above-mentioned weighing devices, which are respectively arranged at four fulcrums of the working platform.

For ease of transmitter setup, the above transmitters can optionally be installed in the console of the work platform. Certainly, the above-mentioned transmitter can also be selected to be arranged at other locations, and is not limited to the above-mentioned embodiment.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. A weighing device for a test bench with a single suspension frame, characterized in that it includes: a first connecting plate (1) for connecting with a working platform, a second connecting plate (2) for connecting with a suspension frame, located at the The load cell (11) between the first connecting plate (1) and the second connecting plate (2) is connected to the first connecting plate (1) and the second connecting plate (2) and can A first bearing (7) carrying an X-direction force, a second bearing (8) that connects the first connection plate (1) and the second connection plate (2) and can bear a Y-direction force;

   Wherein, the load cell (11) is used to detect the pressure between the first connecting plate (1) and the second connecting plate (2);

   X-direction and Y-direction are perpendicular, and both X-direction and Y-direction are perpendicular to the direction of pressure borne by the load cell (11).
2. The weighing device according to claim 1, characterized in that, the first bearing member (7) is parallel to the X direction, and the second bearing member (8) is parallel to the Y direction.
3. The weighing device according to claim 1, characterized in that,

   One end of the first carrier (7) is hingedly connected to the first connecting plate (1), and the other end of the first carrier (7) is hingedly connected to the second connecting plate (2);

   One end of the second bearing part (8) is hingedly connected to the first connecting plate (1), and the other end of the second bearing part (8) is hingedly connected to the second connecting plate (2).
4. The weighing device according to claim 3, characterized in that,

   The first connecting plate (1) is fixed with a first connecting piece (3) and a second connecting piece (4), and the second connecting plate (2) is fixed with a third connecting piece (5) and a fourth connecting piece (6);

   One end of the first carrier (7) is hinged to the first connecting member (3), and the other end of the first carrier (7) is hinged to the third connecting member (5);

   One end of the second bearing part (8) is hinged to the second connecting part (4), and the other end of the second bearing part (8) is hinged to the fourth connecting part (6).
5. The weighing device according to claim 1, further comprising a conductive member (12) connecting the first connecting plate (1) and the second connecting plate (2).
6. The weighing device according to claim 5, characterized in that, one end of the conductive member (12) is fixedly connected to the first connection plate (1), and the other end of the conductive member (12) is connected to the The second connecting plate (2) is fixedly connected, and the conductive element (12) is a flexible element.
7. The weighing device according to claim 6, characterized in that, the conductive member (12) is U-shaped.
8. The weighing device according to claim 1, characterized in that it further comprises a limiting column (10) located between the first connecting plate (1) and the second connecting plate (2), the limiting The post (10) is used to limit the distance between the first connecting plate (1) and the second connecting plate (2).
9. The weighing device according to claim 8, characterized in that, the position of the first connecting plate (1) on the limit column (10) is adjustable, and/or the second connecting plate (2 ) is adjustable in position on the limit post (10).
10. The weighing device according to claim 9, characterized in that,

    The first connecting plate (1) is provided with a first threaded hole (101), and the limit post (10) has a first stud threadedly fitted with the first threaded hole (101);

    The second connecting plate (2) is provided with a second threaded hole, and the limiting column (10) has a second stud screwed with the second threaded hole.
11. The weighing device according to any one of claims 1-10, further comprising:

    a bearing column (9), the bearing column (9) is fixedly connected to the second connecting plate (2), and the second connecting plate (2) is used to communicate with the suspension through the bearing column (9) frame connection;

    And/or a transmitter, the transmitter is used to convert the pressure signal of the load cell (11) into a weight signal.
12. A single-suspension frame test bench, comprising a weighing device, characterized in that the weighing device is the weighing device according to any one of claims 1-11.

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