CN117496814A - Pneumatic linear load simulator - Google Patents

Abstract

The invention discloses a pneumatic linear load simulator, which comprises: the base is provided with a guide rail, the guide rail is connected with a sliding plate in a sliding way, one side of the sliding plate is fixedly connected with a vertical loading piece, and the other side of the sliding plate is fixedly connected with a cylinder bracket; the vertical cylinder is fixedly connected to the base, and an output shaft of the vertical cylinder is connected with the sliding plate; the horizontal cylinder is fixedly connected to the cylinder bracket, and the output shaft of the horizontal cylinder is connected with a horizontal loading piece; the force-bearing piece is fixedly connected to the measured object and is used for propping against the vertical loading piece and the horizontal loading piece; the horizontal pressure sensor is arranged on the horizontal loading piece and is used for detecting the pressure between the horizontal loading piece and the stressed piece when the horizontal loading piece and the stressed piece are propped against each other; the vertical pressure sensor is arranged on the vertical loading piece and is used for detecting the pressure between the vertical loading piece and the stressed piece when the vertical loading piece and the stressed piece are propped against each other; the balance cylinder is fixed on the base, and an output shaft of the balance cylinder is connected with the sliding plate or the cylinder bracket. The simulator of the scheme has the advantages of high loading precision and strong capability, and can work under high and low temperature, vibration and impact environments.

Description

Pneumatic linear load simulator

Technical field

The invention relates to the technical field of load simulators, specifically a pneumatic linear load simulator.

Background technique

Linear load simulators are widely used in the semi-physical simulation process of linear motion objects to simulate the mechanical performance testing of linear motion objects under load. The study of load characteristics is to enhance the stability and reliability of the system mechanism in actual operation. Through the load force simulation of the load simulator, the full physical test can be converted into a semi-physical test, which can shorten the development cycle and save costs. The purpose is to improve the reliability and success rate of product development.

The current driving forms of linear load simulators mainly include electro-hydraulic and electric. The electro-hydraulic loading actuator has the advantage of strong loading capacity, but its loading performance is poor under small load conditions, and it has problems of heavy pollution and inconvenient maintenance; the electric loading actuator has high loading resolution and is suitable for small load work, but The size of the motor required for large load conditions is too large, and the motor cannot be used in high and low temperature, vibration, and shock environments.

Contents of the invention

In order to overcome the deficiencies in the prior art, embodiments of the present invention provide a pneumatic linear load simulator to solve the above problems.

The embodiment of this application discloses: a pneumatic linear load simulator, including:

Base, the base is provided with a guide rail perpendicular to the base, a slide plate is slidably connected to the guide rail, a vertical loading member is fixedly connected to one side of the slide plate, and a cylinder bracket is fixedly connected to the other side of the slide plate;

At least one vertical cylinder is fixedly connected to the base, and the output shaft of the vertical cylinder is connected to the sliding plate;

A horizontal cylinder is fixedly connected to the cylinder bracket, and the output shaft of the horizontal cylinder is connected to a horizontal loading member;

A force-bearing member, fixedly connected to the object to be measured, used to offset the vertical loading member and the horizontal loading member;

At least one horizontal pressure sensor, disposed on the horizontal loading member, used to detect the pressure between the horizontal loading member and the force-bearing member when the two are in contact;

A vertical pressure sensor, arranged on the vertical loading member, used to detect the pressure between the vertical loading member and the force-bearing member when the two are offset;

At least one balance cylinder is fixed on the base, and the output shaft of the balance cylinder is connected to the slide plate or the cylinder bracket.

Specifically, the pneumatic linear load simulator further includes an acceleration sensor arranged on the horizontal loading member.

Specifically, the force-receiving part includes a first force-receiving part and two second force-receiving parts symmetrically arranged at both ends of the first force-receiving part. The first force-receiving part is used to communicate with the vertical loading part. To offset each other, the two second force-bearing parts are used to offset the horizontal loading member.

Specifically, the output shaft of the horizontal cylinder is disposed between the two second force-receiving parts. There is a horizontal pressure sensor at each end of the horizontal loading member, and the second force-receiving part is provided with a A groove that offsets the horizontal loading member.

Specifically, the output shaft of the horizontal cylinder penetrates the sliding plate to be connected with the horizontal loading member.

Specifically, the vertical loading member includes a pressure plate and a boss provided on the side of the pressure plate facing the object to be measured. The pressure plate is used to connect with the sliding plate. The force part penetrates through the through hole and can move in the horizontal direction, the boss is used to resist the first force-receiving part, and the vertical pressure sensor is installed in the boss.

Specifically, the pneumatic linear load simulator includes two vertical cylinders, and the two vertical cylinders are symmetrically located at both ends of the sliding plate and are respectively connected to the sliding plate.

Specifically, the pneumatic linear load simulator includes two balance cylinders, and the two balance cylinders are symmetrically distributed on both sides of the cylinder bracket and connected to the cylinder bracket respectively.

Specifically, a quick exhaust valve is provided between the vertical cylinder and the corresponding solenoid valve.

The invention at least has the following beneficial effects: it adopts a cylinder for driving, has the characteristics of high loading accuracy, strong loading capacity and no pollution, and can realize reliable linear motion objects under various load conditions in high and low temperature, vibration and impact environments. Simulation test: The pneumatic linear load simulator of this embodiment adopts a symmetrically arranged structure, making the structure simple and compact, and the volume miniaturized.

In order to make the above and other objects, features and advantages of the present invention more clearly understood, preferred embodiments are described in detail below along with the accompanying drawings.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of the pneumatic linear load simulator from the first perspective in the embodiment of the present invention;

Figure 2 is a schematic structural diagram of the pneumatic linear load simulator from a second perspective in the embodiment of the present invention;

Figure 3 is a schematic structural diagram of a force-bearing member in an embodiment of the present invention;

Figure 4 is a positional relationship diagram between the horizontal loading member, the horizontal cylinder and the force-bearing member in the embodiment of the present invention;

Figure 5 is a schematic structural diagram of the vertical loading member in the embodiment of the present invention;

Figure 6 is a positional relationship diagram between the vertical loading member and the force-bearing member in the embodiment of the present invention.

Reference numbers in the above drawings: 1. Base; 2. Guide rail; 3. Slide plate; 41. Vertical loading member; 411. Pressure plate; 4111. Through hole; 412. Boss; 413. Mounting plate; 414. Strengthening plate; 42. Horizontal loading member; 5. Cylinder bracket; 61. Vertical cylinder; 62. Horizontal cylinder; 63. Balance cylinder; 7. Forced member; 71. First force-bearing part; 72. Second force-bearing part; 721. Groove; 81. Horizontal pressure sensor; 82. Vertical pressure sensor; 83. Acceleration sensor; 100. Measured object.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection", "fixing" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, or a fixed connection. It can be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediary, or it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood through specific circumstances.

In the present invention, unless otherwise explicitly stated and limited, a first feature "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or it may include the first feature being in direct contact with the second feature. Two features are not in direct contact but are in contact through another feature between them. Furthermore, the terms “above”, “below” and “above” a first feature of a second feature include the first feature being directly above and diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "under" and "under" the first feature is below the second feature includes the first feature being below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "back", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application. and simplified description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the scope of the present application.

In addition, the terms "first", "second", etc. are only used for descriptive distinction and have no special meaning.

As shown in Figures 1 to 5, the pneumatic linear load simulator of this embodiment mainly includes: base 1, guide rail 2, slide plate 3, vertical loading member 41, cylinder bracket 5, at least one vertical cylinder 61, horizontal cylinder 62, horizontal Loading member 42, force-bearing member 7, at least one horizontal pressure sensor 81, vertical sensor and at least one balancing cylinder 63.

Among them, the base 1 is used to support the other components mentioned above, and the base 1 can also be used to connect with a working platform such as a vibration table. The guide rail 2 is vertically connected to the base 1, the slide plate 3 is slidably connected to the guide rail 2, the vertical loading member 41 is fixedly connected to one side of the slide plate 3, and the cylinder bracket 5 is fixedly connected to the other side of the slide plate 3. The cylinder body of the vertical cylinder 61 is fixedly connected to the base 1, and its output shaft is connected to the slide plate 3. The vertical cylinder 61 is used to drive the slide plate 3 to move on the guide rail 2 in a direction perpendicular to the base 1, thereby driving the vertical loading member 41 and the cylinder The bracket 5 moves along the guide rail 2. The horizontal cylinder 62 is fixedly connected to the cylinder bracket 5, and its output shaft is arranged toward the vertical loading member 41. The horizontal loading member 42 is connected to the output shaft of the horizontal cylinder 62. The force-bearing member 7 is fixed on the object 100 to be measured, and is used to offset the vertical loading member 41 and the horizontal loading member 42 respectively when the vertical cylinder 61 and the horizontal cylinder 62 are working. The horizontal pressure sensor 81 is disposed on the horizontal loading member 42. When the horizontal loading member 42 and the force-bearing member 7 are against each other, the horizontal pressure sensor 81 can detect the pressure between the two. The vertical pressure sensor 82 is disposed on the vertical loading member 41 . When the vertical loading member 41 and the force-bearing member 7 are against each other, the vertical pressure sensor 82 can detect the pressure between the two. The balance cylinder 63 is fixed on the base 1, and its output shaft is connected to the slide plate 3 or the cylinder bracket 5. When the measured object 100 is to be installed on the base 1 or the measured object 100 does not need to be loaded, the output shaft of the balance cylinder 63 Stretch out to push the sliding plate 3 and other parts fixed on it (for convenience of description, the sliding plate 3 and other parts fixed on it are referred to as "moving parts" below) upward so that personnel can install the object 100 under test; when the simulator When the measured object 100 is loaded and the measured object 100 performs motion, the output shaft of the balance cylinder 63 retracts to exert a pulling force on the moving part. This pulling force is used to balance the force of the moving part caused by the rapid lifting of the force member 7 Inertial force.

The vertical cylinder 61 is connected to the air supply system through the first solenoid valve and the first proportional valve; the horizontal cylinder 62 is connected to the air supply system through the second solenoid valve and the second proportional valve; the balance cylinder 63 is connected through the third solenoid valve and the third proportional valve. The valve is connected to the air supply system. The corresponding proportional valve is used to control the pressure of the corresponding cylinder, and the corresponding solenoid valve is used to connect the corresponding cylinder to the atmosphere.

Preferably, as shown in Figures 1 and 2, the pneumatic linear load simulator of this embodiment includes two vertical cylinders 61 and two balance cylinders 63. Two vertical cylinders 61 are symmetrically arranged on both sides of the sliding plate 3 and are connected to the sliding plate 3 respectively. Two balance cylinders 63 are symmetrically arranged on both sides of the cylinder bracket 5 and are connected to the cylinder bracket 5 respectively. Generally speaking, the pneumatic linear load simulator of this embodiment generally has a symmetrical layout, which is conducive to reducing the size of the simulator while meeting the loading force requirements.

As shown in FIG. 1 , the pneumatic linear load simulator of this embodiment may also include an acceleration sensor 83 disposed on the horizontal loading member 42 . When the vertical cylinder 61 and the horizontal cylinder 62 load the force-bearing member 7, the horizontal loading member 42 contacts the force-bearing member 7. Therefore, the acceleration sensor 83 can detect the acceleration of the force-bearing member 7, that is, detect the movement of the measured object 100. The acceleration produced when motion is performed in the vertical direction under the action of horizontal and vertical loading forces.

As shown in FIG. 3 , the force-receiving member 7 of this embodiment may include a first force-receiving part 71 and two second force-receiving parts 72 symmetrically arranged at both ends of the first force-receiving part 71 . Among them, the first force-receiving part 71 is used to offset the vertical loading component 41 to detect the vertical loading force; the two second force-receiving parts 72 are used to offset the horizontal loading component 42 to detect the horizontal loading force. Further, as shown in FIGS. 1 , 3 and 4 , the output shaft of the horizontal cylinder 62 penetrates the sliding plate 3 to be connected with the horizontal loading member 42 . The output shaft of the horizontal cylinder 62 is arranged between the two second force-bearing parts 72. A horizontal pressure sensor 81 is installed at both ends of the horizontal loading part 42. When the horizontal loading part 42 and the two second force-bearing parts 7 When the force-receiving parts 72 offset each other, the two horizontal pressure sensors 81 are used to measure the horizontal loading force. Preferably, each second force-bearing part 72 is provided with a groove 721 , and the groove 721 is used to resist the horizontal loading member 42 .

As shown in Figures 5 and 6, the vertical loading member 41 of this embodiment includes a pressure plate 411. The pressure plate 411 is provided with a boss 412 on the side facing the measured object 100. The boss 412 is used to contact the first force-bearing member 7. The force receiving part 71 offsets each other. The pressure plate 411 is connected to the sliding plate 3 through the installation plate 413. Specifically, the pressure plate 411 and the installation plate 413 are generally connected vertically to form an L shape. In order to improve the connection strength between the two, there is also a Reinforcement plate 414. The pressure plate 411 is generally located above the force-bearing member 7. The pressure plate 411 is provided with two waist-shaped through holes 4111. The through holes 4111 are used for the two second force-bearing portions 72 of the force-bearing member 7 to penetrate and can pass along the pressure plate 411. Move horizontally. The vertical sensor is installed in the boss 412. When the boss 412 is against the first force-receiving part 71, the vertical sensor can detect the vertical loading force.

Preferably, a quick exhaust valve is also provided between the vertical cylinder 61 and the corresponding solenoid valve in this embodiment. The quick exhaust valve can help the corresponding vertical cylinder 61 increase the exhaust gas when the measured object 100 performs movement. speed, maintaining constant output.

The pneumatic linear load simulator of this embodiment is mainly used to detect the performance and acceleration of the measured object 100 under the preset load. Its working process is as follows: before starting work, the vertical cylinder 61 and the horizontal cylinder 62 pass through the first solenoid valve respectively. The second solenoid valve is connected to the atmosphere, and the third proportional valve is used to control the pushing of the balance cylinder 63 to balance the gravity of the moving part itself, so as to facilitate the installation and alignment of the measured object 100; according to the working condition requirements of the measured object 100, set the level The output force of the cylinder 62 and the vertical cylinder 61 uses corresponding proportional valves to control the horizontal cylinder 62 and the vertical cylinder 61 to apply corresponding pressure respectively. The proportional valve outputs through the PLC analog quantity to realize proportional adjustment of the output pressure, thereby realizing the horizontal cylinder 62 and the vertical cylinder 61. Linear adjustment of the output force of the vertical cylinder 61; measure whether the output force of the corresponding cylinder meets the requirements through the horizontal pressure sensor 81 and the vertical pressure sensor 82. If not, calculate the deviation and reset it. The acceleration sensor 83 is used to detect when the measured object 100 is loading The acceleration generated by the movement under the action of force can be calculated by integrating the acceleration value once to calculate the movement speed of the measured object 100, and calculating the movement position of the measured object 100 by integrating twice. Since the measured object 100 performs movement in the vertical direction, The force-bearing part 7 pushes up the moving part, and the moving part moves with a very large acceleration. At this time, the output shaft of the balance cylinder 63 retracts to exert a pulling force on the moving part, balancing the inertia force generated by the moving part; the test is to be completed. , the horizontal cylinder 62 and the vertical cylinder 61 are pushed out to release the loading force, and the balance cylinder 63 is pushed out to balance the gravity of the moving parts.

To sum up, the pneumatic linear load simulator of this embodiment has the following advantages: it is driven by a cylinder, has the characteristics of high loading accuracy and strong loading capacity, and can realize linear motion objects in various high and low temperature, vibration, and impact environments. Simulation test under various load conditions (the pressure of the corresponding cylinder is controlled by the corresponding proportional valve to realize the adjustment of different loads, and the constant force of the vertical cylinder under different acceleration conditions is realized by the rapid exhaust valve); the pneumatic linear load simulator of this embodiment The symmetrically arranged structure makes the structure simple and compact and the volume small.

The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, based on this The idea of the invention will be subject to change in the specific implementation and scope of application. In summary, the contents of this description should not be understood as limiting the invention.

Claims (9)

1. A pneumatic linear load simulator, characterized by including: Base, the base is provided with a guide rail perpendicular to the base, a slide plate is slidably connected to the guide rail, a vertical loading member is fixedly connected to one side of the slide plate, and a cylinder bracket is fixedly connected to the other side of the slide plate; At least one vertical cylinder is fixedly connected to the base, and the output shaft of the vertical cylinder is connected to the sliding plate; A horizontal cylinder is fixedly connected to the cylinder bracket, and the output shaft of the horizontal cylinder is connected to a horizontal loading member; A force-bearing member, fixedly connected to the object to be measured, used to offset the vertical loading member and the horizontal loading member; At least one horizontal pressure sensor, disposed on the horizontal loading member, used to detect the pressure between the horizontal loading member and the force-bearing member when the two are in contact; A vertical pressure sensor, arranged on the vertical loading member, used to detect the pressure between the vertical loading member and the force-bearing member when the two are offset; At least one balance cylinder is fixed on the base, and the output shaft of the balance cylinder is connected to the slide plate or the cylinder bracket. 2. The pneumatic linear load simulator according to claim 1, characterized in that the pneumatic linear load simulator further includes an acceleration sensor arranged on the horizontal loading member. 3. The pneumatic linear load simulator according to claim 1, wherein the force-receiving member includes a first force-receiving part and two second force-receiving parts symmetrically arranged at both ends of the first force-receiving part. , the first force-receiving part is used to offset the vertical loading member, and the two second force-receiving parts are used to offset the horizontal loading member. 4. The pneumatic linear load simulator according to claim 3, characterized in that the output shaft of the horizontal cylinder is disposed between the two second force-bearing parts, and the two ends of the horizontal loading member each have A horizontal pressure sensor, the second force-bearing part is provided with a groove for resisting the horizontal loading member. 5. The pneumatic linear load simulator according to claim 3, wherein the output shaft of the horizontal cylinder penetrates the sliding plate to be connected with the horizontal loading member. 6. The pneumatic linear load simulator according to claim 3, wherein the vertical loading member includes a pressure plate and a boss arranged on the side of the pressure plate facing the object to be measured, and the pressure plate is used to interact with the pressure plate. The sliding plate is connected, the pressure plate is provided with a through hole for the second force-receiving part to penetrate and move in the horizontal direction, the boss is used to offset the first force-receiving part, and the vertical pressure The sensor is installed in the boss. 7. The pneumatic linear load simulator according to claim 1, characterized in that the pneumatic linear load simulator includes two vertical cylinders, and the two vertical cylinders are symmetrically located at both ends of the slide plate and are respectively connected with each other. The slide plate is connected. 8. The pneumatic linear load simulator according to claim 1, characterized in that the pneumatic linear load simulator includes two balance cylinders, and the two balance cylinders are symmetrically distributed on both sides of the cylinder bracket and respectively Connected to the cylinder bracket. 9. The pneumatic linear load simulator according to claim 1, characterized in that a quick exhaust valve is provided between the vertical cylinder and the corresponding solenoid valve.