Point contact durability experiment device with pressure adjusting structure

Abstract

The utility model provides a point contact durability experiment device with a pressure adjusting structure, which comprises a point contact guide component, a pressing transmission component, a power driving component, a driving control component, a pressure sensing component and an adjusting control component, and is characterized in that a pressing spring is additionally arranged between a transmission ejector rod and a guide end pipe; by adopting a simple structure, the pressure of the point contact pressure head is increased at a constant speed, the safety of a test sample can be guaranteed, the extra stroke of the pressing spring avoids the harm caused by abnormal phenomena such as motor stalling and power supply overload to a certain extent, the safety of a user and the device is better guaranteed, and the safety of the device is improved. By means of real-time monitoring of a pressure sensor, presetting of a signal comparator and control of an adjusting controller, pressing operation of rated pressure can be achieved, time is preset through a time relay in the controller, repeated circulation is achieved, and the application range of the device in tests such as switch circulation durability / pressing circulation durability is expanded.

Description

Technical Field

[0001] The utility model relates to vehicle production equipment, in particular to a point-touch durability test device with a pressure regulating structure. Background Art

[0002] New energy vehicles are charged by opening the charging port cover. The charging port cover protects the charging interface. Before using it, it needs to undergo a series of tests such as the switch test. The pressing test process such as the charging port cover switch durability test needs to ensure safety, accuracy, reliability and repeatability.

[0003] Patent document CN208283054U discloses a charging port cover durability test device, which includes a cylinder, a transmission shaft is sleeved in the cylinder, one end of the transmission shaft extending out of the cylinder is connected to a motor, and a connector is fixedly provided at one end of the transmission shaft close to the motor, and the connector is detachably connected to a telescopic arm device, and the telescopic arm device includes a first swing arm and a second swing arm, the first swing arm and the second swing arm are on the same horizontal line, a telescopic mechanism is provided between the first swing arm and the second swing arm, and a gripper is hinged at one end of the second swing arm away from the first swing arm, and a telescopic box is provided between the first swing arm and the second swing arm to ensure that the first swing arm and the second swing arm will not be broken during the charging and discharging test. Secondly, the motor adopts a stepper motor, and the rotation angle of the motor is set to drive the first swing arm and the second swing arm to rotate through the set angle, and the Hall probe is used for counting, and the counting is accurate, no manual counting is required, and the working time of the workers is saved. However, this durability test device cannot perform a pressing operation with a rated pressure, and the accuracy, repeatability and reliability of the test results cannot be guaranteed. Therefore, it is necessary to optimize its structure to overcome the above defects. Utility Model Content

[0004] The utility model aims to provide a point touch durability test device with a pressure regulating structure to improve the accuracy and reliability of the test process.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A point touch durability test device with a pressure regulating structure, comprising:

[0007] A touch guide member, which is installed in the experimental frame through a movable connection structure and can move in the experimental frame. It cooperates with the cover to be tested and can perform a touch operation on the cover;

[0008] A pressing transmission component, which cooperates with the touch guide component through a movable connection structure and can perform a pressing operation on the touch guide component;

[0009] A power-driven rotating component, which cooperates with the pressing transmission component, and is driven by the power-driven rotating component to drive the pressing transmission component to operate;

[0010] A drive control component, which is connected to the power drive component by signal, and the drive control component controls the operating state of the power drive component;

[0011] A pressure sensing component, which is connected to the touch guide component signal, and the pressure sensing component performs pressure sensing on the touch operation process of the touch guide component to obtain a pressure signal;

[0012] An adjusting control component is signal-connected with the pressure sensing component and the driving control component. The adjusting control component adjusts the driving control component through the pressure signal obtained by the pressure sensing component to change the operating state of the power-driven component, and then adjusts the touch pressure of the touch guide component by pressing the transmission component.

[0013] Specifically, the touch guide component includes:

[0014] A guide end column, which is installed in the experimental frame through a guide sliding hole and can move in the experimental frame;

[0015] A point-touch pressure head is installed at the outer end of the guide end column, and is in contact with the cover to be tested. When the guide end column slides, the point-touch pressure head can be carried to press the cover;

[0016] The guide end tube is connected to the inner end of the guide end column and can move together with the guide end column.

[0017] The pressing transmission component comprises:

[0018] A transmission push rod, the inner end of which extends into the guide end tube and can be extended and retracted in the guide end tube;

[0019] A pressing spring is located between the transmission push rod and the guide end tube, and its two ends are respectively engaged with the transmission push rod and the guide end tube. The transmission push rod can be telescopically driven by the pressing spring to move the guide end tube, the guide end head and the touch pressure head.

[0020] The power drive components include:

[0021] A driving screw rod, which cooperates with the outer end of the transmission push rod through a threaded structure, and can drive the transmission push rod to extend and retract when the driving screw rod rotates;

[0022] A driving motor, wherein a power output shaft of the driving motor cooperates with a driving screw rod through a transmission gear, and the driving motor drives the driving screw rod to rotate.

[0023] The drive control components include:

[0024] A servo driver is connected to the drive motor signal and can control the operation process of the drive motor.

[0025] The pressure sensing member comprises:

[0026] A pressure sensor is installed between the guide end column and the guide end tube, and the pressure sensor senses the pressure on the guide end column and the wire end tube;

[0027] A signal comparator is connected to the pressure sensor signal through a transmitter, and the signal comparator compares the pressure signal obtained by the pressure sensor with a preset pressure.

[0028] The regulating control components include:

[0029] A regulating controller, which is connected to the signal comparator and the servo driver signal, inputs a preset pressure value to the signal comparator, and controls the servo driver according to the comparison result of the signal comparator to make the drive motor rotate forward or reverse;

[0030] A time relay is installed in the regulating controller, and the time relay presets the cycle operation time of the regulating controller.

[0031] The advantages of the utility model are:

[0032] The experimental device installs a pressing spring between the transmission push rod and the guide end tube, and adopts a simple structure to achieve a uniform increase in the pressure of the touch pressure head, which can ensure the safety of the test sample. The extra stroke of the pressing spring can avoid the hazards caused by abnormal phenomena such as motor jamming and power supply overload to a certain extent, and has a higher guarantee for the safety of users and the device itself. With the help of real-time monitoring of the pressure sensor, the pressing operation of the rated pressure can be achieved through the preset of the signal comparator and the control of the adjustment controller, which improves the accuracy, repeatability and reliability of the test results. The time is preset by the time relay in the controller to achieve repeated cycles, which expands the application range of the device in switching cycle durability / pressing cycle durability and other tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The utility model discloses a structural schematic diagram of a point-touch durability test device with a pressure regulating structure. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0035] like Figure 1 As shown, the touch durability experimental device with a pressure adjustment structure proposed by the utility model includes a touch guide component, a pressing transmission component, a power drive component, a drive control component, a pressure sensing component and an adjustment control component. The touch guide component is installed in the experimental frame through a movable connection structure and can be moved in the experimental frame. It cooperates with the cover body to be tested and can perform a touch operation on the cover body. The pressing transmission component cooperates with the touch guide component through a movable connection structure and can perform a pressing operation on the touch guide component. The power drive component cooperates with the pressing transmission component, and the power drive component drives the pressing transmission component to drive the pressing The pressure transmission component is operated, the drive control component is connected with the power drive component signal, the drive control component controls the operation state of the power drive component, the pressure sensing component is connected with the touch guide component signal, the pressure sensing component performs pressure sensing on the touch operation process of the touch guide component to obtain the pressure signal, the adjustment control component is connected with the pressure sensing component and the drive control component signal, the adjustment control component adjusts the drive control component through the pressure signal obtained by the pressure sensing component, so that the operation state of the power drive component changes, and then adjusts the touch pressure of the touch guide component by pressing the transmission component.

[0036] In this embodiment, the touch guide component includes a guide end column 110, a touch pressure head 120 and a guide end tube 130. The guide end column is installed in the experimental frame through a guide slide hole and can move in the experimental frame. The touch pressure head is installed at the outer end of the guide end column and abuts against the cover body to be tested. When the guide end column slides, the touch pressure head can be carried to press the cover body. The guide end tube is connected to the inner end of the guide end column and can move with the guide end column.

[0037] The pressing transmission component includes a transmission push rod 210 and a pressing spring 220. The inner end of the transmission push rod extends into the guide end tube and can be retracted and extended in the guide end tube. The pressing spring is located between the transmission push rod and the guide end tube, and its two ends are respectively engaged with the transmission push rod and the guide end tube. The transmission push rod can be retracted and moved by the pressing spring to drive the guide end tube, the guide end head and the touch pressure head to move.

[0038] The power driving component includes a driving screw 310 and a driving motor 320. The driving screw cooperates with the outer end of the transmission top rod through a threaded structure, and can drive the transmission top rod to extend and retract when it rotates. The power output shaft of the driving motor cooperates with the driving screw through a transmission gear, and the driving motor drives the driving screw to rotate.

[0039] The driving control component includes a servo driver 400, which is connected to the driving motor signal and can control the operation process of the driving motor.

[0040] In this embodiment, the structure and operation principle of the servo driver are prior art, so they are not described in detail. The DB60-01330A6-A servo driver sold by Pufeid Electric Co., Ltd. can be used.

[0041] The pressure sensing component includes a pressure sensor 510 and a signal comparator 520. The pressure sensor is installed between the guide end column and the guide end tube. The pressure sensor senses the pressure on the guide end column and the wire end tube. The signal comparator is connected to the pressure sensor signal through a transmitter. The signal comparator compares the pressure signal obtained by the pressure sensor with the preset pressure.

[0042] In this embodiment, the structure and operation principle of the pressure sensor and the signal comparator are prior art, so they are not described in detail. The MIK-P300 model pressure sensor and signal comparator sold by Hangzhou Meikong Automation Technology Co., Ltd. can be used.

[0043] The regulating control component includes a regulating controller 600 and a time relay. The regulating controller is connected to the signal comparator and the servo driver signal. It inputs a preset pressure value to the signal comparator and controls the servo driver according to the comparison result of the signal comparator to drive the motor forward or reverse. The time relay is installed in the regulating controller, and the time relay presets the cycle operation time of the regulating controller.

[0044] In this embodiment, the structure and operation principle of the regulating controller and the time relay adopt the existing technology, so they are not described in detail. The YF-38 regulating controller sold by Yueyu Electronic Technology Co., Ltd. can be used.

[0045] In the description of the present utility model, it should be noted that when terms such as "upper", "lower", "inner", "outer", "left", "right" and the like indicating orientation or positional relationship appear, it should be understood that the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, when terms such as "first" and "second" appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "setting", and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A point touch durability test device with a pressure regulating structure, characterized in that: include: A touch guide member, which is installed in the experimental frame through a movable connection structure and can move in the experimental frame. It cooperates with the cover to be tested and can perform a touch operation on the cover; A pressing transmission component, which cooperates with the touch guide component through a movable connection structure and can perform a pressing operation on the touch guide component; A power-driven rotating component, which cooperates with the pressing transmission component, and is driven by the power-driven rotating component to drive the pressing transmission component to operate; A drive control component, which is connected to the power drive component by signal, and the drive control component controls the operating state of the power drive component; A pressure sensing component, which is connected to the touch guide component signal, and the pressure sensing component performs pressure sensing on the touch operation process of the touch guide component to obtain a pressure signal; An adjusting control component is signal-connected with the pressure sensing component and the driving control component. The adjusting control component adjusts the driving control component through the pressure signal obtained by the pressure sensing component to change the operating state of the power-driven component, and then adjusts the touch pressure of the touch guide component by pressing the transmission component.

2. A touch durability test device with a pressure regulating structure according to claim 1, characterized in that: The touch guide components include: A guide end column, which is installed in the experimental frame through a guide sliding hole and can move in the experimental frame; A point-touch pressure head is installed at the outer end of the guide end column and abuts against the cover body to be tested; The guide end tube is connected to the inner end of the guide end column and can move together with the guide end column.

3. The touch durability test device with a pressure regulating structure according to claim 2, characterized in that: The pressing transmission component comprises: A transmission push rod, the inner end of which extends into the guide end tube and can be extended and retracted in the guide end tube; A pressing spring is located between the transmission push rod and the guide end tube, and two ends of the pressing spring are respectively engaged with the transmission push rod and the guide end tube.

4. The point touch durability test device with a pressure regulating structure according to claim 3, characterized in that: The power drive components include: A driving screw rod, which cooperates with the outer end of the transmission push rod through a threaded structure, and can drive the transmission push rod to extend and retract when the driving screw rod rotates; A driving motor, wherein a power output shaft of the driving motor cooperates with a driving screw rod through a transmission gear.

5. The point touch durability test device with a pressure regulating structure according to claim 4, characterized in that: The drive control components include: A servo driver is connected to the drive motor signal and can control the operation process of the drive motor.

6. The point touch durability test device with a pressure regulating structure according to claim 5, characterized in that: The pressure sensing member comprises: A pressure sensor is installed between the guide end column and the guide end tube, and the pressure sensor senses the pressure on the guide end column and the wire end tube; A signal comparator is connected to the pressure sensor signal through a transmitter, and the signal comparator compares the pressure signal obtained by the pressure sensor with a preset pressure.

7. The point touch durability test device with a pressure regulating structure according to claim 6, characterized in that: The regulating control components include: A regulating controller, which is connected to the signal comparator and the servo driver signal, inputs a preset pressure value to the signal comparator, and controls the servo driver according to the comparison result of the signal comparator; A time relay is installed in the regulating controller, and the time relay presets the cycle operation time of the regulating controller.

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