A function performance detection test bench for an electric cylinder

Abstract

The application provides a kind of electric cylinder function performance detection test platform, comprising, pedestal extends along the first direction, one end is equipped with the fixture assembly for installing electric cylinder;Hydraulic load module is located at the end of the pedestal away from electric cylinder, including fixedly installed on the hydraulic cylinder of pedestal and the overflow valve hydraulic cylinder connected with hydraulic cylinder extends along the first direction, two oil ports are connected with oil tank through one-way valve respectively;The conduction direction of one-way valve is the direction from oil tank to hydraulic cylinder;The input end of overflow valve is installed between one-way valve and oil port, and the output end is connected with oil tank;Lateral loading module is located at the middle of pedestal, the output direction is perpendicular to the first direction, for exerting lateral pressure on electric cylinder.By connecting oil tank and hydraulic cylinder through one-way valve, and then cooperating with overflow valve to form a passive system, no hydraulic pump and control system are needed, after the action of electric cylinder, stable pressure can still be quickly established, and stable load is provided, so that test cost is effectively reduced and maintenance is facilitated.

Description

Technical Field

[0001] This application relates to the field of performance testing technology, specifically to a test bench for testing the functional performance of an electric cylinder. Background Technology

[0002] Electric cylinders are widely used in industrial automation, intelligent manufacturing, and precision equipment due to their advantages such as high-precision positioning, strong controllability, and good environmental adaptability. With the advancement of servo control technology and sensor technology, the performance requirements of electric cylinders are gradually increasing, and their thrust, position accuracy, and bending moment resistance have become core testing indicators. In the existing technology, the performance testing of electric cylinders suffers from problems such as complex and costly loading systems, insufficient bidirectional resistance control capabilities, low integration of measurement and control, and insufficient intelligence and completeness. Therefore, the above problems urgently need to be solved. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a test bench for testing the functional performance of electric cylinders.

[0004] This application provides a functional performance testing bench for electric cylinders, including... A base extending along a first direction, with a clamping assembly for mounting an electric cylinder at one end; A hydraulic load module, located at the end of the base away from the electric cylinder, includes a hydraulic cylinder fixedly mounted on the base and an overflow valve connected to the hydraulic cylinder; The hydraulic cylinder extends along the first direction, and its two oil ports are connected to the oil tank via check valves. The one-way valve is open in the direction from the oil tank to the hydraulic cylinder; The input end of the overflow valve is installed between the check valve and the oil port, and the output end is connected to the oil tank; A lateral loading module is located in the middle of the base and has an output direction perpendicular to the first direction, used to apply lateral pressure to the electric cylinder.

[0005] Furthermore, The clamping assembly includes support seats located at both ends of the electric cylinder and pressure plates mounted on the support seats; The support base is fixedly installed on the base, and the top of the support base is provided with a matching first groove corresponding to the electric cylinder; The pressure plate is detachably connected to the support base by bolts, and a matching second groove is provided at the bottom corresponding to the electric cylinder.

[0006] Furthermore, The electric cylinder and the hydraulic cylinder are connected by a connector; The connector is connected to the electric cylinder via a first flange. The first flange is fixedly mounted on the telescopic rod of the electric cylinder and is detachably connected to the connecting piece.

[0007] Furthermore, A first force sensor is fixedly installed at the end of the connector away from the first flange. The hydraulic cylinder is fixedly connected to the first force sensor via a second flange.

[0008] Furthermore, The connector is connected to the base via a slider; The base is provided with a matching slide rail corresponding to the slider; The slide rail extends along the first direction, and a magnetic strip extending along the first direction is provided at the top; The slider is equipped with a matching reading head corresponding to the magnetic strip, forming a magnetic scale.

[0009] Furthermore, The lateral loading module includes a cylinder fixedly mounted on the base; A second force sensor is fixedly installed at the output end of the cylinder; The end of the second force sensor away from the cylinder is provided with an abutment corresponding to the electric cylinder.

[0010] Furthermore, It also includes the host computer system; The host computer system is configured to interact with the first force sensor, the second force sensor, and the magnetic scale, and to display the test data.

[0011] The advantages and positive effects of this application are: This technical solution connects the oil tank and the hydraulic cylinder through a one-way valve, and together with the relief valve, forms a passive system. It eliminates the need for a hydraulic pump and control system. Even after the electric cylinder is activated, it can still quickly establish stable pressure and provide a stable load, thereby effectively reducing testing costs and facilitating maintenance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the electric cylinder functional performance testing bench provided in the embodiments of this application; Figure 2 This is a schematic diagram of the connecting parts of the electric cylinder functional performance testing bench provided in the embodiments of this application; Figure 3 A schematic diagram of the hydraulic load module of the electric cylinder functional performance testing bench provided in this application embodiment.

[0013] The text labels in the diagram are as follows: 100-Base; 110-Electric cylinder; 111-First flange; 120-Support seat; 121-Pressure plate; 130-Connector; 131-First force sensor; 200-Hydraulic cylinder; 210-Relief valve; 220-Check valve; 230-Oil tank; 240-Second flange; 300-Pneumatic cylinder; 310-Second force sensor; 311-Abutment joint; 400-Host computer system. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this application, the application will be described in detail below with reference to the accompanying drawings. The description in this section is only exemplary and explanatory, and should not be used to limit the scope of protection of this application.

[0015] Please refer to Figures 1-3 This embodiment provides a test bench for testing the functional performance of an electric cylinder, including a base 100 extending along a first direction, with a clamp assembly for mounting an electric cylinder 110 at one end; a hydraulic load module located at the end of the base 100 away from the electric cylinder 110, including a hydraulic cylinder 200 fixedly mounted on the base 100 and an overflow valve 210 connected to the hydraulic cylinder 200; the hydraulic cylinder 200 extending along the first direction, with two oil ports connected to an oil tank 230 via check valves 220; the conduction direction of the check valves 220 is from the oil tank 230 to the hydraulic cylinder 200; the input end of the overflow valve 210 is installed between the check valve 220 and the oil port, and the output end is connected to the oil tank 230; and a lateral loading module located in the middle of the base 100, with an output direction perpendicular to the first direction, for applying lateral pressure to the electric cylinder 110.

[0016] In this embodiment, a hydraulic load module is provided at the other end of the base 100 away from the electric cylinder 110. The hydraulic load module includes a hydraulic cylinder 200 fixedly installed on the base 100 and an overflow valve 210 connected to the hydraulic cylinder 200. The hydraulic cylinder 200 extends in a first direction, and its two oil ports are respectively connected to the oil tank 230 through a one-way valve 220. The conduction direction of the one-way valve 220 is set from the oil tank 230 to the hydraulic cylinder 200, allowing hydraulic oil to flow from the oil tank 230 into the hydraulic cylinder 200, but preventing reverse flow. The input end of the overflow valve 210 is connected to the pipeline between the one-way valve 220 and the oil port of the hydraulic cylinder 200, and the output end is connected to the oil tank 230 to form a hydraulic circuit.

[0017] In this embodiment, when the telescopic rod of the electric cylinder 110 moves, it pushes the piston of the hydraulic cylinder 200 to move, generating pressure within the hydraulic cylinder 200. Due to the conduction characteristics of the one-way valve 220, hydraulic oil can only be replenished to the hydraulic cylinder 200 from the oil tank 230, while the relief valve 210 is used to set the maximum system pressure. When the pressure exceeds the set value, the relief valve 210 opens, returning the excess hydraulic oil to the oil tank 230. This design forms a passive hydraulic system that can quickly establish and maintain stable pressure after the electric cylinder 110 moves without the need for an external hydraulic pump or complex control system, providing adjustable axial load resistance for the electric cylinder 110.

[0018] In this embodiment, a lateral loading module is provided at the middle position of the base 100; the output direction of the module is perpendicular to the first direction and is used to apply lateral pressure to the electric cylinder 110 to simulate bending moment or eccentric load in actual working conditions; the lateral loading module can apply pressure by mechanical or pneumatic means, and its output force and displacement can be adjusted according to test requirements.

[0019] With the above structure, this test bench can efficiently and cost-effectively complete the load performance test and lateral pressure resistance test of the electric cylinder 110. The hydraulic load module provides a stable and adjustable axial load, and the lateral loading module provides vertical interference force, comprehensively evaluating the functional performance of the electric cylinder 110. The entire system has a simple structure, is easy to maintain, and is suitable for industrial sites or laboratory environments.

[0020] In a preferred embodiment, the clamping assembly includes a support base 120 located at both ends of the electric cylinder 110 and a pressure plate 121 mounted on the support base 120; the support base 120 is fixedly mounted on the base 100, and its top is provided with a matching first groove corresponding to the electric cylinder 110; the pressure plate 121 is detachably connected to the support base 120 by bolts, and its bottom is provided with a matching second groove corresponding to the electric cylinder 110.

[0021] In this embodiment, the clamping assembly includes support seats 120 located at both ends of the electric cylinder 110; the support seats 120 are fixedly mounted on the base 100, and a first groove matching the shape of the electric cylinder 110 is machined on its top; the shape of the first groove is adapted to the contour of the corresponding part of the electric cylinder 110, which can provide stable bottom support for the electric cylinder 110.

[0022] In this embodiment, a pressure plate 121 is also installed on each support base 120; the pressure plate 121 is detachably connected to the support base 120 by bolts; at the bottom of the pressure plate 121, a matching second groove is machined corresponding to the position of the electric cylinder 110; when the pressure plate 121 is fastened to the support base 120 by bolts, the second groove and the first groove together form a complete constraint structure, firmly clamping the electric cylinder 110 therein.

[0023] In a preferred embodiment, the electric cylinder 110 and the hydraulic cylinder 200 are connected by a connector 130; the connector 130 and the electric cylinder 110 are connected by a first flange 111; the first flange 111 is fixedly mounted on the telescopic rod of the electric cylinder 110 and is detachably connected to the connector 130.

[0024] In this embodiment, the electric cylinder 110 and the hydraulic cylinder 200 are connected by a connector 130; one end of the connector 130 is connected to the electric cylinder 110 through a first flange 111.

[0025] Specifically, the first flange 111 is fixedly installed at the end of the telescopic rod of the electric cylinder 110, serving as the standard interface for the output end of the electric cylinder.

[0026] In this embodiment, the connector 130 and the first flange 111 are connected in a detachable manner; this detachable design allows the electric cylinder 110 to be quickly connected and disconnected from the hydraulic cylinder 200 as needed.

[0027] In a preferred embodiment, a first force sensor 131 is fixedly installed at the end of the connector 130 away from the first flange 111; the hydraulic cylinder 200 is fixedly connected to the first force sensor 131 through the second flange 240.

[0028] In this embodiment, a first force sensor 131 is fixedly installed at the end of the connector 130 away from the first flange 111; the first force sensor 131 is set on the force transmission path between the connector 130 and the hydraulic load module, and is used to accurately detect the axial force generated when the electric cylinder 110 is working.

[0029] In this embodiment, the hydraulic cylinder 200 is fixedly connected to the first force sensor 131 via the second flange 240.

[0030] Specifically, the second flange 240 is fixedly installed at the end of the piston rod of the hydraulic cylinder 200, and is reliably connected to the corresponding interface of the first force sensor 131 through fasteners such as bolts.

[0031] In this embodiment, with this arrangement, when the telescopic rod of the electric cylinder 110 extends or retracts, the resulting thrust or pull is transmitted to the first force sensor 131 through the first flange 111 and the connector 130, and then finally transmitted to the hydraulic cylinder 200 through the second flange 240; the first force sensor 131 can detect and output the force signal in real time during this process.

[0032] In a preferred embodiment, the connector 130 is connected to the base 100 by a slider; the base 100 is provided with a matching slide rail corresponding to the slider; the slide rail extends along the first direction and has a magnetic strip extending along the first direction at its top; the slider is provided with a matching reading head corresponding to the magnetic strip, forming a magnetic scale.

[0033] In this embodiment, the connector 130 and the base 100 are connected by a slider.

[0034] Specifically, the slider is fixedly installed at the bottom of the connector 130 and forms a sliding engagement with the matching slide rail set on the base 100; this engagement between the slider and the slide rail can ensure that the connector 130 maintains a stable linear motion trajectory during movement.

[0035] In this embodiment, the slide rail extends along a first direction, and a magnetic strip extending in the same direction is provided on its top; the magnetic strip is precisely fixed on the slide rail, forming a reference ruler for displacement measurement; a matching reading head is installed on the slider at the position corresponding to the magnetic strip, and the reading head can sense changes in the magnetic signal on the magnetic strip.

[0036] In this embodiment, a precision magnetic scale measurement system is formed by the cooperation of the magnetic strip and the reading head. When the connector 130 moves with the extension and retraction of the electric cylinder 110, the slider drives the reading head to slide along the magnetic strip. The reading head reads the position information on the magnetic strip in real time, thereby accurately measuring the displacement of the connector 130.

[0037] In a preferred embodiment, the lateral loading module includes a cylinder 300 fixedly mounted on the base 100; a second force sensor 310 is fixedly mounted on the output end of the cylinder 300; and an abutment 311 is provided at the end of the second force sensor 310 away from the cylinder 300 corresponding to the electric cylinder 110.

[0038] In this embodiment, the lateral loading module includes a cylinder 300 fixedly mounted on the base 100; the output direction of the cylinder 300 is set to be perpendicular to the first direction, so that it can apply the required test load to the side of the electric cylinder 110.

[0039] In this embodiment, a second force sensor 310 is fixedly installed at the output end of the cylinder 300; the second force sensor 310 is used to detect and provide feedback on the magnitude of the force applied to the electric cylinder 110 during the lateral loading process in real time, so as to ensure the accurate control and measurement of the lateral loading force.

[0040] In a preferred embodiment, a host computer system 400 is also included; the host computer system 400 is configured to communicate with the first force sensor 131, the second force sensor 310 and the magnetic scale respectively, and to display test data.

[0041] In this embodiment, the host computer system 400 can synchronously collect, process and display test data from different sensors; the system can present parameters such as force and displacement to the operator in real time in the form of numerical values, curves or charts, which facilitates intuitive analysis and evaluation of the performance of the electric cylinder.

[0042] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A test bench for testing the functional performance of an electric cylinder, characterized in that, include A base (100) extending in a first direction, with a clamping assembly for mounting an electric cylinder (110) at one end; A hydraulic load module, located at one end of the base (100) away from the electric cylinder (110), includes a hydraulic cylinder (200) fixedly mounted on the base (100) and an overflow valve (210) connected to the hydraulic cylinder (200). The hydraulic cylinder (200) extends along the first direction, and its two oil ports are connected to the oil tank (230) through check valves (220); The one-way valve (220) is open in the direction from the oil tank (230) to the hydraulic cylinder (200); The input end of the overflow valve (210) is installed between the check valve (220) and the oil port, and the output end is connected to the oil tank (230); A lateral loading module is located in the middle of the base (100) and has an output direction perpendicular to the first direction, for applying lateral pressure to the electric cylinder (110).

2. The electric cylinder functional performance testing bench according to claim 1, characterized in that, The clamping assembly includes support seats (120) located at both ends of the electric cylinder (110) and pressure plates (121) mounted on the support seats (120). The support base (120) is fixedly installed on the base (100), and the top is provided with a matching first groove corresponding to the electric cylinder (110); The pressure plate (121) is detachably connected to the support base (120) by bolts, and the bottom is provided with a matching second groove corresponding to the electric cylinder (110).

3. The electric cylinder functional performance testing bench according to claim 2, characterized in that, The electric cylinder (110) and the hydraulic cylinder (200) are connected by a connector (130); The connector (130) is connected to the electric cylinder (110) via a first flange (111); The first flange (111) is fixedly mounted on the telescopic rod of the electric cylinder (110) and is detachably connected to the connector (130).

4. The electric cylinder functional performance testing bench according to claim 3, characterized in that, A first force sensor (131) is fixedly installed at the end of the connector (130) away from the first flange (111). The hydraulic cylinder (200) is fixedly connected to the first force sensor (131) via the second flange (240).

5. The electric cylinder functional performance testing bench according to claim 4, characterized in that, The connector (130) is connected to the base (100) by a slider; The base (100) is provided with a matching slide rail corresponding to the slider; The slide rail extends along the first direction, and a magnetic strip extending along the first direction is provided at the top; The slider is equipped with a matching reading head corresponding to the magnetic strip, forming a magnetic scale.

6. The electric cylinder functional performance testing bench according to claim 5, characterized in that, The lateral loading module includes a cylinder (300) fixedly mounted on the base (100); A second force sensor (310) is fixedly installed at the output end of the cylinder (300); The second force sensor (310) has an abutment (311) at one end away from the cylinder (300) corresponding to the electric cylinder (110).

7. The electric cylinder functional performance testing bench according to claim 6, characterized in that, It also includes the host computer system (400); The host computer system (400) is configured to communicate with the first force sensor (131), the second force sensor (310), and the magnetic scale respectively, and to display test data.

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