Seat fatigue strength testing device

Abstract

The utility model discloses a seat fatigue strength testing device which comprises a base which is provided with a support and a portal frame. The support is provided with at least one set of stations used for loading seats. A pair of lifting modules is arranged on the portal frame, a tool jig is arranged on the pair of lifting modules, execution air cylinders in one-to-one correspondence with the stations are arranged on the tool jig, and all the execution air cylinders are connected into an air supply module; a force sensor is arranged at the front end of an output shaft of each execution air cylinder, and each force sensor is connected with a force acquisition transmitter; and the control system is used for controlling the device. According to the utility model, the seat surface and the seat back of the seat are automatically tested, the test time is effectively shortened, the test efficiency is improved, and the test cost is reduced; and secondly, while the test accuracy is effectively improved, different working conditions of the tested seat in actual use can be simulated, so that the performance of the tested seat can be evaluated more comprehensively.

Description

Technical Field

[0001] The utility model belongs to the technical field of seat testing, and in particular relates to a seat fatigue strength testing device. Background Art

[0002] In order to ensure the durability, safety, and comfort of the produced seats and their compliance with industry standards and regulatory requirements, fatigue testing is required on the completed seats to promptly identify and resolve problems in the design and manufacturing process and improve the overall quality and reliability of the seats.

[0003] Traditional seat fatigue testing methods often rely on long-term actual use or simulated use. This method is not only time-consuming and costly, but also difficult to ensure the accuracy of the test. Therefore, it is necessary to design a seat fatigue strength testing device to effectively solve the above technical problems. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model aims to provide a seat fatigue strength testing device to improve the testing efficiency and accuracy.

[0005] In order to achieve the above technical objectives and effects, the present invention is implemented through the following technical solutions:

[0006] A seat fatigue strength testing device comprises a base, on which a bracket and a gantry are provided; the bracket is provided with at least one group of workstations for loading seats; the gantry is provided with a pair of lifting modules, a pair of the lifting modules is provided with a tooling fixture, the tooling fixture is provided with actuator cylinders corresponding one to one to the workstations, all the actuator cylinders are connected to an air supply module, and the air supply module can be used to control the output shafts of the actuator cylinders to reciprocate; the front ends of the output shafts of all the actuator cylinders are respectively provided with a force sensor, and all the force sensors are respectively connected to a force acquisition transmitter; a control system for controlling the device is also included, and the air supply module and the force acquisition transmitter are respectively connected to the control system for electrical signals.

[0007] Furthermore, the bracket includes a base connected to the base and a connecting frame and a support arranged on the base.

[0008] Furthermore, the lifting module is vertically arranged on the crossbeam of the gantry through a corresponding connecting seat, and the tooling fixture can move back and forth in the vertical direction by being driven by the lifting module.

[0009] Furthermore, the lifting module is horizontally arranged on a cross bar through a corresponding connecting seat, the cross bar is fixedly connected to the gantry, and the tooling fixture can be moved back and forth in the horizontal direction by being driven by the lifting module.

[0010] Furthermore, the lifting module adopts a manual screw lifting mechanism.

[0011] Furthermore, the execution cylinders are respectively provided with magnetic switches.

[0012] Furthermore, the control system includes a control cabinet, an electric control box and a host computer operating system arranged in the control cabinet.

[0013] The beneficial effects of the present invention are as follows: the device of the present invention realizes automated testing of the seat seat and seat back, effectively shortens the test time, improves the test efficiency and reduces the test cost; secondly, during the test process, the test force value, loading time and number of tests are set, which effectively improves the accuracy of the test and can simulate different working conditions of the tested seat in actual use, thereby more comprehensively evaluating its performance.

[0014] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following is a detailed description of the preferred embodiments of the present invention with the accompanying drawings. The specific implementation methods of the present invention are given in detail in the following embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 This is a schematic structural diagram of the first embodiment of the device of the utility model;

[0017] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a schematic structural diagram of the second embodiment of the device of the utility model;

[0019] Figure 4 For this utility model Figure 3 Enlarged view of point B in the middle.

[0020] Explanation of the numbers in the figure: 1. Base; 2. Bracket; 3. Gantry; 4. Fixture; 5. Actuator cylinder; 6. Air supply module; 7. Force sensor; 8. Force acquisition transmitter; 9. Control system; 10. Lifting module; 11. Pressure plate; 12. Magnetic switch; 13. Crossbar; 201. Base; 202. Connecting frame; 203. Support; 901. Control cabinet; 902. Electric control box; 903. Upper computer operating system; 9011. Start button; 9022. Shutdown button; 9023. Emergency stop switch. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] Example 1

[0024] See also Figure 1 As shown in the figure (label A represents a seat), a seat fatigue strength testing device includes a base 1, a bracket 2 is provided on the base 1, and the bracket 2 includes a base 201 connected to the base 1 and a connecting frame 202 and a support 203 provided on the base 201; it should be noted that, in this embodiment, the base 201 is locked on the base 1 by corresponding locking bolts; and the connecting frame 202 and the support 203 are each provided with six groups of workstations for loading seats. Of course, the above is only one embodiment and is not intended to limit the scope of this application. In actual settings, it can also be set to other numbers of groups as long as it can meet the usage requirements.

[0025] See also Figure 1-2As shown, a gantry 3 is further provided on the base 1, and a tool fixture 4 is provided on the gantry 3. In this embodiment, the tool fixture 4 is provided on the gantry 3 through a pair of lifting modules 10. Specifically, a pair of the lifting modules 10 are fixed vertically downward on the crossbeam of the gantry 3 through corresponding connecting seats, and the tool fixture 4 is fixed to the front end of the lifting module 10. The tool fixture 4 can be moved back and forth in the vertical direction by the drive of the pair of lifting modules 10; the tool fixture 4 is provided with an execution cylinder 5 corresponding to the work station one by one and pointing vertically downward, that is, In this embodiment, six groups of the actuator cylinders 5 are provided, and all the actuator cylinders 5 are connected to an air supply module 6, through which the output shafts of the actuator cylinders 5 can be controlled to reciprocate; the front ends of the output shafts of all the actuator cylinders 5 are respectively provided with a force sensor 7, and all the force sensors 7 are respectively connected to a force acquisition transmitter 8, and in this embodiment, all the force acquisition transmitters 8 are fixed to the base 201; and a magnetic switch 12 is respectively provided on the side walls of all the actuator cylinders 5. During testing, the number of actions of the actuator cylinder 5 is counted by the magnetic switch 12.

[0026] In this embodiment, the lifting module 10 adopts a manual screw lifting mechanism; and in this embodiment, see Figure 1 As shown, the air supply module 6 includes an air supply device, an air pipe and an electromagnetic valve; when connected, all the executive cylinders 5 are connected to the air supply device through the air pipe, and the electromagnetic valve is arranged in the air pipe; during the test, the flow direction of the air source is adjusted by controlling the switching state of the electromagnetic valve, thereby realizing the reciprocating operation of the output shaft of the executive cylinder 5.

[0027] Continue to see Figure 1 As shown, the device also includes a control system 9 for controlling the device, and the control system 9 is located on one side of the base 1. When connected, the air supply module 6, the force acquisition transmitter 8 and the magnetic switch 12 are respectively connected to the control system 9; wherein, in this embodiment, the control system 9 includes a control cabinet 901, an electric control box 902 and a host computer operating system 903; the electric control box 902 and the host computer operating system 903 are located in the control cabinet 901, and the electric control box 902 is located below the host computer operating system 903; the electric control box 902 is provided with a start button 9021, an off button 9022 and an emergency stop switch 9023.

[0028] When testing the seat surface, first load the test sample seat on the corresponding test station. At this time, the seat back is fixedly connected to the connecting frame 202, and a gap is retained between the lower end surface of the seat surface and the support 203; then select a matching pressure plate 11 according to the test requirements, and fix the pressure plate 11 to the load application position required by the test; then press the start button 9021, power on the device, enter the upper computer operating system 903 operation interface, and set the corresponding test force value, loading time, and number of tests according to the requirements and prompts of the operation interface; then manually shake the lifting module 10, and drive the execution cylinder 5 to move closer to the pressure plate 11 through the tooling fixture 4, that is, move down, and finally make the The force sensor 7 is fitted with the pressure plate, and the force value collected by the force acquisition transmitter 8 is displayed in a zero state on the operation interface of the host computer operating system 903; after completing all settings, click the start / stop icon in the operation interface of the host computer operating system 903, the device starts, and the host computer operating system 903 controls the operation of the execution cylinder 5 according to the set test force value, loading time, and number of tests to test the seat seat; and after the test is completed, the host computer operating system 903 will automatically control the device to stop; finally, manually shake the lifting module 10, and drive the execution cylinder 5 away from the pressure plate 11 through the tooling fixture 4, that is, after moving up, remove the pressure plate 11, and inspect the seat seat of the test sample.

[0029] In which, during the test, the force acquisition transmitter 8 receives the electrical signal of the force sensed by the force sensor 7, and after being processed by the force acquisition transmitter 8, it is fed back to the host computer operating system 903. When the test force value and the loading time reach the set value, the host computer operating system 903 controls the opening / closing of the solenoid valve in the air supply module 6 to adjust the flow direction of the air source, thereby controlling the reciprocating cycle of the output shaft of the execution cylinder 5. During the cyclic operation of the execution cylinder 5, the magnetic switch 12 counts and feeds back to the host computer operating system 903. When the set number of times is reached, the host computer operating system 903 control device stops.

[0030] Example 2

[0031] See also Figure 3As shown in the figure (label A represents a seat), a seat fatigue strength testing device includes a base 1, a bracket 2 is provided on the base 1, and the bracket 2 includes a base 201 connected to the base 1 and a connecting frame 202 and a support 203 provided on the base 201; it should be noted that, in this embodiment, the base 201 is locked on the base 1 by corresponding locking bolts; and the connecting frame 202 and the support 203 are each provided with six groups of workstations for loading seats. Of course, the above is only one embodiment and is not intended to limit the scope of this application. In actual settings, it can also be set to other numbers of groups as long as it can meet the usage requirements.

[0032] See also Figure 3-4 As shown, a gantry 3 is further provided on the base 1, and a tool fixture 4 is provided on the gantry 3. In this embodiment, the tool fixture 4 is provided on a cross bar 13 through a pair of lifting modules 10. The cross bar 13 is fixedly connected to the gantry 3, wherein a pair of the lifting modules 10 are horizontally fixed on the cross bar 13 through corresponding connecting seats, and the tool fixture 4 is fixed to the front end of the lifting module 10. The tool fixture 4 can be moved back and forth in the horizontal direction by the drive of the pair of lifting modules 10; the tool fixture 4 is provided with an execution member corresponding to the work station one by one and facing the back of the seat. Cylinder 5, that is, in this embodiment, six groups of the execution cylinders 5 are set, all of the execution cylinders 5 are connected to an air supply module 6, and the output shaft of the execution cylinder 5 can be controlled to reciprocate through the air supply module 6; the front end of the output shaft of all the execution cylinders 5 is respectively provided with a force sensor 7, and all the force sensors 7 are respectively connected to a force acquisition transmitter 8, and in this embodiment, all the force acquisition transmitters 8 are fixed on the base 201; and a magnetic switch 12 is respectively provided on the side wall of all the execution cylinders 5. During testing, the number of actions of the execution cylinder 5 is counted by the magnetic switch 12.

[0033] In this embodiment, see Figure 3 As shown, the air supply module 6 includes an air supply device, an air pipe and an electromagnetic valve; when connected, all the executive cylinders 5 are connected to the air supply device through the air pipe, and the electromagnetic valve is arranged in the air pipe; during the test, the flow direction of the air source is adjusted by controlling the switching state of the electromagnetic valve, thereby realizing the reciprocating operation of the output shaft of the executive cylinder 5.

[0034] Continue to see Figure 3As shown, the device also includes a control system 9 for controlling the device, and the control system 9 is located on one side of the base 1; wherein, in this embodiment, the control system 9 includes a control cabinet 901, an electric control box 902 and a host computer operating system 903 that can set the test force value, loading time and number of tests; the electric control box 902 and the host computer operating system 903 are located in the control cabinet 901, and the electric control box 902 is located below the host computer operating system 903; the electric control box 902 is provided with a start button 9021, a close button 9022 and an emergency stop switch 9023; when connected, the air supply device in the air supply module 6 is connected to the electric control box, and the solenoid valve, the force acquisition transmitter 8 and the magnetic switch 12 in the air supply module 6 are respectively connected to the host computer operating system 903.

[0035] When testing the seat back, first load the test sample seat on the corresponding test station. At this time, the seat surface of the seat is fixedly connected to the support 203, and a gap is retained between the seat back and the connecting frame 202. Then, select a matching pressure plate 11 according to the test requirements, and fix the pressure plate 11 to the load application position required by the test. Then press the start button 9021, power on the device, enter the upper computer operating system 903 operation interface, and set the corresponding test force value, loading time, and number of tests according to the requirements and prompts of the operation interface. Then manually shake the lifting module 10, and drive the execution cylinder 5 to move closer to the pressure plate 11 through the tooling fixture 4, and finally make the force sensor 7 and the pressure plate 1 1 fits, and after the force value collected by the force acquisition transmitter 8 is displayed in the zero state on the operation interface of the host computer operating system 903, the bracket 2 is locked on the base 1; after all settings are completed, click the start / stop icon in the operation interface of the host computer operating system 903, the device starts, and the host computer operating system 903 controls the operation of the execution cylinder 5 according to the set test force value, loading time, and number of tests to test the seat seat; and after the test is completed, the host computer operating system 903 will automatically control the device to stop; finally, manually shake the lifting module 10, drive the execution cylinder 5 away from the pressure plate 11 through the tooling fixture 4, remove the pressure plate 11, and inspect the seat seat of the test sample.

[0036] Among them, during the test process, the force acquisition transmitter 8 receives the electrical signal of the force sensed by the force sensor 7, and after being processed by the force acquisition transmitter 8, it is fed back to the host computer operating system 903. When the test force value and the loading time reach the set value, the host computer operating system 903 controls the opening / closing of the solenoid valve in the air supply module 6 to adjust the flow direction of the air source, thereby controlling the reciprocating cycle of the output shaft of the execution cylinder 5. During the cyclic operation of the execution cylinder 5, the magnetic switch 12 counts and feeds back the signal to the host computer operating system 903. When the set number of times is reached, the host computer operating system 903 control device stops.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A seat fatigue strength testing device, characterized by: The invention comprises a base (1), wherein a bracket (2) and a gantry (3) are provided on the base (1); at least one group of workstations for loading seats is provided on the bracket (2); a pair of lifting modules (10) are provided on the gantry (3), a tooling fixture (4) is provided on the pair of lifting modules (10), and an execution cylinder (5) corresponding to the workstation is provided on the tooling fixture (4), and all the execution cylinders (5) are connected to an air supply module (6), and the output shaft of the execution cylinder (5) can be controlled to reciprocate through the air supply module (6); the front ends of the output shafts of all the execution cylinders (5) are respectively provided with a force sensor (7), and all the force sensors (7) are respectively connected to a force acquisition transmitter (8); and a control system (9) for controlling the device is also included, and the air supply module (6) and the force acquisition transmitter (8) are respectively connected to the control system (9) for electrical signals.

2. The seat fatigue strength testing device according to claim 1, characterized in that: The bracket (2) comprises a base (201) connected to the pedestal (1), and a connecting frame (202) and a support (203) arranged on the base (201).

3. The seat fatigue strength testing device according to claim 1, characterized in that: The lifting module (10) is vertically arranged on the crossbeam of the gantry (3) through a corresponding connecting seat, and the tooling fixture (4) can move back and forth in the vertical direction through the driving of the lifting module (10).

4. The seat fatigue strength testing device according to claim 1, characterized in that: The lifting module (10) is horizontally arranged on a crossbar (13) through a corresponding connecting seat. The crossbar (13) is fixedly connected to the gantry (3). The tooling fixture (4) can move back and forth in the horizontal direction through the driving of the lifting module (10).

5. The seat fatigue strength testing device according to claim 3 or 4, characterized in that: The lifting module (10) adopts a manual screw lifting mechanism.

6. The seat fatigue strength testing device according to claim 1, characterized in that: The execution cylinders (5) are respectively provided with magnetic switches (12).

7. The seat fatigue strength testing device according to claim 1, characterized in that: The control system (9) comprises a control cabinet (901), an electric control box (902) and a host computer operating system (903) arranged in the control cabinet (901).

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