AU2020100426A4 - A type of opening and closing experimental control mechanism featured with bionic function - Google Patents

Abstract

The invention discloses a type of opening and closing experimental control mechanism features with bionic function relating to the field of experimental equipment technology, comprising the erecting track, the mounting support matching the erecting track, a power supply and control device matching the mounting support, a cylinder matching the mounting support and controlled by the power supply and control device, a bionic pusher dog matched and installed with the cylinder and a stress adjusting spring connecting the cylinder to the bionic pusher dog. The bionic pusher dog and stress adjusting spring coordinate mutually and generate the structure of automatic disengagement of the pusher dog, and the bionic pusher dog changes the situation that the closing and opening samples must be closed and opened on the front, the driving mode of sample closing and opening from the side through the pusher dog is adopted is further in compliance with actual situation in actual use so that the samples will not be affected by external force during short-circuit tripping and no data distortion or similar circumstance will occur. 15 1o 14- 19

Description

A TYPE OF OPENING AND CLOSING EXPERIMENTAL CONTROL MECHANISM FEATURED WITH BIONIC FUNCTION

TECHNICAL FIELD

The present invention falls within the technical field of experimental equipment, in particular it relates to a type of opening and closing experimental control mechanism featured with bionic function.

BACKGROUND OF THE INVENTION

The opening and closing control mechanism is required in short circuit and life experiments of electrical experiment. Especially, it is further necessary to have a suitable opening and closing mechanism in the short-circuit tests of GB 14048.2, GB16917, GB 10963, GB 16916 and UL489 series to complete the experimental control of live closing (CO).

Various types of jacking opening and closing mechanisms capable of completing the life or fatigue test are available in existing domestic and international laboratories, while the opening and closing mechanisms capable of completing the short circuit test, especially high current and high voltage live closing (CO) test fully meting experimental requirements of equipment have not emerged, and the fixed pulley lead pull-type or stationary-type mechanical opening and closing mechanism in the laboratories are used to conduct high current live closing (CO) short circuit test.

For the fixed pulley lead pull type test method, fix the pull wire at the sample handle

2020100426 19 Mar 2020 of the required experiment, and lead it out through the fixed pulley, the experimenter is to pull the pull wire at a distance to close the sample, and then the sample is tripped and opened due to the short circuit of current to complete the experiment. The disadvantages of this method used lie in that firstly the experimenter must be relatively experienced and exert moderate force while pulling. Excessively slight force will cause slow closing speed of the sample, arc striking of close, cause damage to the sample or distort experimental data or fail to close the sample or similar problem Excessive force exerted will deliver mechanical impact on the sample itself, resulting sample damage. Meanwhile, both of such two situations will cause the external force applied on the sample fails to be released immediately when the sample is closed. When the sample suffers from short circuit or tripping, it will be difficult to trip due to the influence of external force, causing serious impact on the authenticity of the test data.

Experiment Mode of Stationary-type Mechanical Opening and Closing Mechanism

The sample handle is lifted to the closing position by means of mechanical mechanism lifting to make the sample short circuit and trip. The disadvantage of this experimental method is that most of the mechanical opening and closing mechanisms lift the samples to the closing position and then stop, and the samples can only be tripped internally, and the samples are always affected by the external force of the mechanism during the tripping process, causing that it is difficult for the sample to trip and seriously affecting the test data. Partial mechanical opening and closing mechanisms will be converted to reverse operation after the jacking to reduce the impact on the tripping of experimental

2020100426 19 Mar 2020 samples. However, the sample tripping is almost completed within the duration of a few milliseconds, and the duration for mechanical opening and closing mechanism to change direction fails to meet experimental requirements at all, and its impact on the experimental data fails to be eliminated fundamentally. Meanwhile, the detection film is required to be installed at the top level of the site at 10 mm of closing of sample handle according to Chinese internal standard, and the cotton indicator is required to be installed at the site in international standard, and it is impossible to operate most of the mechanical mechanisms in such a narrow site due to volume limits.

High current close short-circuit (CO) experiment is a n extremely important index to investigate the protective capability of experimental samples to human body and equipment in actual service, while existing experimental methods fail to fundamentally guarantee normal experiment and the authenticity of experimental data.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the defects of existing technology, provide a type of opening and closing experimental control mechanism featured with bionic function which can complete opening and closing experiments relating to experimental standard for high current closing short circuit (CO), and improve the authenticity of experimental data.

In order to achieve the abovementioned purposes, The invention invention discloses a type of opening & closing experimental control mechanism featured with bionic function, which comprises a erecting track, a mounting support matched and installed with the erecting track, a power supply and control device matched and installed with

2020100426 19 Mar 2020 the mounting support, a cylinder matched and installed with the mounting support and controlled by the power supply and control device, a bionic pusher dog matched and installed with the cylinder and a stress adjusting spring connection between the cylinder and the bionic pusher dog; bionic pusher dog and stress adjusting spring are to coordinate mutually to generate the structure of automatic disengagement of pusher dog, the bionic pusher dog changes the situation that the closing and opening samples must be closed and opened on the front, the driving mode of closing and opening samples from the side through pusher dog is adopted, being further in compliance with actual situation in services, hence the samples are not affected by external forces while short-circuit tripping occurs, and the data distortion or the occurrence of the condition is avoided.

Furthermore, the erecting track described is a three-dimensional and six-way positioning adjustment track; the service of the three-dimensional and six-way track enables the mechanism to conduct up and down, front and back, left and right quick positioning adjustments synchronously to achieve the purpose of installing the test sample at any position of the test stand.

Furthermore, the contact surface of bionic pusher dog and sample handle is a 5 ° arc surface; and a 5 ° arc surface of the bionic human finger structure shape makes the pusher dog to be easily and automatically separated from the tested sample when the cylinder is jacked up so that the sample will not be affected by external force when the short circuit trips, causing the data distortion or similar circumstance.

Furthermore, the cylinder is the high-torque and quick needle type cylinder, which is

2020100426 19 Mar 2020 featured with quick action speed, high torque and small volume.

Furthermore, the power supply and control device involves the photoelectric switch, DC24V power supply, one-way electromagnetic pilot valve, photoelectric feedback signal output interface and external control signal input interface, and the lower end of the cylinder is equipped with photoelectric switch baffle matching the photoelectric switch; When the cylinder starts, the photoelectric induction switch senses the operation of the cylinder, and send sends the feedback signal to the control system for control the system. The photoelectric control and signal feedback allow the cylinder to have to have strong compatibility, flexibility and reliability with respect to the sample control.

Further, the cylinder is composed of the cylinder body and the cylinder ejector rob, the cylinder body comes with the upper air inlet and lower air inlet of the cylinder, both upper and lower ends of the cylinder ejector rob are equipped with threads, and the lower end of the cylinder comes with adjusting nuts; the stroke spacing of the cylinder is adjusted slightly to ensure accurate jacking position of the cylinder; the threads are used to install the bionic pusher dog, upper and lower positioning nuts for the pusher dog, adjusting nuts and photoelectric switch baffle.

Furthermore, the cylinder is equipped with upper and lower locating nuts for the pusher dog matching the bionic pusher dog, and lower locating nuts for the pusher dog is simultaneously used as the adjusting nut for lower limit of pressure adjusting spring; the bionic pusher dog and pressure adjusting spring are positioned, meeting the use

2020100426 19 Mar 2020 requirements of different experimental products and improving the accuracy of experimental data.

Furthermore, the upper part of the cylinder described is additionally added with the cylinder ejector rob sleeve, which is simultaneously used as an adjusting sleeve for lower limit position of bionic pusher dog; the cylinder top rod is protected and the position of the bionic pusher dog is adjusted.

The beneficial effects of present invention the feature of automatic separation of the pusher dog during high current closing short circuit (CO) experiment which imitates the ergonomics is realized, and experimental failure and the serious data inaccuracy of experimental samples under external force intervention is avoided. Meanwhile, the mechanism is featured with small size, large driving force and quick action, and it is capable of securing the operation of experimental mechanism within a small distance range as well as normal determination and indication functions of the thin film indicator and cotton indicator in the experiment.

DESCRIPTION OF THE DRAWINGS

The present invention will be further described in details below in combination with the drawings and specific embodiments.

FIG. 1 is a structural diagram of the present invention.

FIG. 2 is a structural and sectional drawing of bionic pusher dog of the present invention.

FIG. 3 is a structural and sectional drawing of ordinary-type pusher dog of the present

2020100426 19 Mar 2020 invention.

FIG. 4 is a front view of the present invention and installation of the three-dimensional and six-way positioning adjustment track.

FIG. 5 is a top view of the present invention and installation of the three-dimensional and six-way positioning adjustment track.

Including: 1. Cylinder, 2. Cylinder ejector rob, 3. Bionic pusher dog, 4. Upper positioning nut for pusher dog, 5. Lower positioning nut for pusher dog, 6. Stress adjusting spring, 7. Lower positioning nut for spring, 8. Protective sleeve for ejector rob, 9. Mounting support, 10 Adjusting nut for cylinder, 11. Photoelectric switch baffle, 12. Photoelectric switch, 13. DC24V-power supply, 14. One-way electromagnetic pilot valve, 15 Output interface for photoelectric feedback signal, 16. Input interface for external control signal, 17. Upper air inlet for cylinder, 18. Lower air inlet for cylinder, 19. Power supply and control device, 20. Erecting track

Specific Embodiments

The present invention is further described in detail in combination with accompanying drawings and embodiments.

Refer to FIG. 1. The invention is an opening and closing experimental control mechanism featured with bionic function, which comprises erecting track 20, mounting support 9 matched and installed with erecting track 20, power supply and control device 19 matched and installed with the mounting support 9, cylinder 1 matched and installed with mounting support 9 and controlled by the power supply and control

2020100426 19 Mar 2020 device 19, bionic pusher dog 3 matched and installed with cylinder 1, and stress adjusting spring 6 connecting cylinder 1 and the bionic pusher dog 3 and the arc surface in 5 ° contact surface between bionic pusher dog 3 and sample handle. For the sectional structure of bionic pusher dog 3 and the adjustment and application of stress spring 6, two parts coordinate to generate the structure of automatic disengagement of pusher dog. This pusher dog changes the situation that the closing and opening samples must be closed and opened on the front, and the driving mode of closing and opening samples from the side through the pusher dog is adopted, being further in line with actual situation in service. It is also the only product capable of meeting the requirement on automatic driving within 10 mm range of thin film indicator or cotton indicator during sample short circuit test.

Bionic pusher dog 3 is a single closing and automatic disengagement mechanism, and it is specially designed to be high current short circuit (CO). According to experimental requirements, the bionic pusher dog 3 may be replaced with a stationary pusher dog,

i.e. an ordinary-type pusher dog, which is specially designed for life and fatigue experiments of long-period closing and separating samples.

Refer to FIG. 2. The contact surface between bionic pusher dog 3 and the sample handle is a 5 ° arc surface with bionic finger structure. When cylinder 1 pushes bionic pusher dog 3 and bionic pusher dog 3 pushes the tested sample to operate, no deviation will occur, as bionic pusher dog 3 is fixed by positioning nut 4 and stress adjusting spring 6 on the pusher dog. When the tested sample handle is closed in place, as no operation space is available for the sample handle, hence the force exerted on the bionic pusher

2020100426 19 Mar 2020 dog 3 by cylinder 1 will be greater than the jacking force of stress adjusting spring 6, so that the activity space between bionic pusher dog 3 and positioning nut 4 on the pusher dog generates. Because the contact surface between bionic pusher dog 3 and the handle for tested sample is arc shaped, bionic pusher dog 3 will be automatically separated from the tested sample in case of jacking of cylinder 1, so that the sample will not be affected by external force and cause data distortion during short-circuit tripping.

Refer to FIG. 3. It can be concluded from the sectional drawing that the contact surface of ordinary-type pusher dog is in a right angle shape, while there are several fixed holes for fixing samples on the pusher dog surface of ordinary-type pusher dog, and the pusher dog is mainly used for sample on-off life test and is required to have the sample closing and opening functions. Therefore, the pusher dog is required to connect the pusher dog with the sample handle through the fixed hook when it is used, and the sample will be opened and closed as cylinder 1 moves up and down. Such type of pusher dog is not supported to be automatically disengaged when the sample is closed (neither can it be automatically disengaged without the fixed hook).

Refer to FIG. 4 and FIG, erecting track 20 is a three-dimensional and six-way positioning adjustment track. The three-dimensional six direction track is mainly composed of three tracks including track A, track B and track C, wherein track A is utilized to adjust the left and right directions of the mechanism, track B is applied to adjust the up and down directions of the mechanism, and track C is used to adjust the front and back directions of the mechanism. The use of the three-dimensional and sixίο

2020100426 19 Mar 2020 way track enables the mechanism to conduct rapid positioning up and down, front and back, left and right adjustments synchronously to achieve the purpose of installing the test sample in any position of the test stand.

Cylinder 1 is preferably to be high-torque and quick needle cylinder, which is featured with characteristics of fast action speed, high torque and small volume. Cylinder 1 is equipped with upper positioning nut 4 for pusher dog and lower positioning nut 5 for pusher dog matching bionic pusher dog 3 and lower positioning nut 5 for pusher dog, which concurrently serves as the adjusting nut for lower limit of pressure adjusting spring 6, such positioning nut is capable of locating the positions of bionic pusher dog 3 and pressure adjusting spring 6, meeting the requirements of different experimental products and improving the accuracy of experimental data. Cylinder 1 is composed of the cylinder body and cylinder ejector rob 2, the cylinder body is equipped with upper air inlet 17 and lower air inlet 18 for the cylinder., the upper and lower ends of cylinder ejector rob 2 are equipped with threads, and the lower end of cylinder 1 is equipped with adjusting nut 10. Adjust the nut 10 is used to slightly adjust the stroke distance of cylinder 1 to ensure that accurate jacking position of cylinder 1; the thread is used to install the bionic pusher dog 3, upper positioning nut 4 for pusher dog, lower positioning nut 5 for pusher dog, adjusting nut 10 and photoelectric switch baffle 11.

Refer to FIG. 1. power supply and control device 19 involves photoelectric switch 12, DC24V power supply 13, one-way solenoid pilot valve 14, photoelectric feedback signal output interface 15 and external control signal input interface 16, and the lower end of cylinder 1 is equipped with photoelectric switch baffle 11 matching

2020100426 19 Mar 2020 photoelectric switch 12. When cylinder 1 is operated, photoelectric switch 12 senses the operation of cylinder 1, thus send the feedback signal to the control system for control, and the photoelectric control and signal feedback mode enable cylinder 1 to deliver strong compatibility, flexibility and reliability for the sample control. DC24V power supply 12 is used to supply one-way solenoid pilot valve 14; and one-way solenoid pilot valve 14 is used to control the operation of cylinder 1. The external control system controls the operation of one-way solenoid pilot valve 14 through control signal input interface 16; and optical feedback signal output interface 15 feeds back the action state of cylinder 1 to external control system to allow the control system to form a closed-loop control.

The bionic closing and opening mechanism adjusts the mechanism to proper test position through the three-dimensional and six-way positioning adjustment track according to the installations of the test sample, appropriate driving pusher dog is installed according to the test requirements, the limit lifting position of cylinder 1 is adjusted by adjusting nut 10, external control signal is connected, the feedback signal is led to external control system, the control system is started after connecting the control power supply and the air supply of cylinder 1, which makes corresponding lifting actions, and drive the experimental sample for the experiment. In high-current closing short circuit experiment, bionic pusher dog 3 is replaced with , the pusher dog is capable of quickly closing the sample switch, and it will automatically disengage from the handle when the switch is in place to enable the sample to trip freely without external force interference. In the ordinary life and long-period fatigue experiments, the long-period automatic closing and opening experiments may be realized by

2020100426 19 Mar 2020 replacing with the ordinary connecting pusher dog. Meanwhile, because the mechanism is capable of being fully compatible with external control system with flexible and simple control mode thanks to good external control compatibility and real-time signal feedback system.

In the description of the present invention, it shall be noted that the direction or positional relation indicated by the term center, upper, lower, left, right, vertical, horizontal, internal or external (if any) therein is based on the direction or positional relation shown in the drawing and only for the convenience of describing the present invention and simplifying the description instead of indicating or implying specific orientation which the device or element must be provided or be constructed and operated in a specific orientation, and therefore direction or positional relation cannot be understood as a limit to the present invention. Additionally, the term first, second or third (if any) is only used for descriptive purposes rather than being understood as indicating or implying relative importance.

In the descriptions of the present invention, it should be noted that the term installation, linkage and connection shall be understood in a broad sense (if any) unless otherwise specified and defined, for example, either permanent connection or detachable connection or an integrated connection or mechanical connection or electrical connection or direct connection or an intermediate medium indirect connection or internal connection between two components is supported. For those of ordinary technicians in the field, the specific meaning of the above terms in the present invention may be understood based on specific situations.

2020100426 19 Mar 2020

A simple replacement without changing the inventive content of the present invention will be considered as the identical creation. All the embodiments in the Specification will be described in a progressive manner. Each embodiment focuses on the differences from other embodiments, identical and similar parts of embodiments may be mutually referred. The above descriptions of the disclosed embodiments enable the professionals and technicians in the field to realize or use the invention. Various modifications to these embodiments will be apparent to the professionals and technicians in the field, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will conform to the widest range in compliance with the principles and novel features disclosed herein rather than being limited to these embodiments shown herein.

Claims (8)

1. A type of opening and closing experimental control mechanism featured with bionic function is characterized in that it comprises an erecting track, a mounting support matched and installed with erecting track, a power supply and control device matched and installed with mounting support, a cylinder matched and installed with mounting support and controlled by power supply and control device, a cylinder matched and installed with the mounting support, a bionic pusher dog matched and installed with cylinder and a stress adjusting spring connecting cylinder and bionic pusher dog.

2. A type of opening and closing experimental control mechanism featured with bionic function according to Claim 1 is characterized in that erecting track is a threedimensional and six-way positioning adjustment track.

3. A type of opening and closing experimental control mechanism featured with bionic function according to Claim 1 is characterized in that the contact surface between bionic pusher dog and the sample handle described is an arc surface in 5 °.

4. A type of opening and closing experimental control mechanism featured with bionic function according to Claim 1 is characterized in that cylinder described is a hightorque and quick needle cylinder.

5. A type of opening and closing experimental control mechanism featured with bionic function according to Claim 1 and Claim 4 is characterized in that power supply and control device described involves the photoelectric switch, DC24V power supply, oneway electromagnetic pilot valve, photoelectric feedback signal output interface and

2020100426 19 Mar 2020 external control signal input interface; and lower end of cylinder described is equipped with photoelectric switch baffle matching photoelectric switch.

6. A type of opening and closing experimental control mechanism featured with bionic function according to Claim 5 is characterized in that cylinder described is composed of a cylinder body and a cylinder ejector rob, the cylinder body is equipped with an upper air inlet and a lower air inlet; both upper and lower ends of cylinder ejector rob are provided with threads, and the lower end of cylinder is provided with adjusting nut.

7. A type of opening and closing experimental control mechanism featured with bionic function according to Claim 6 is characterized in that the cylinder described is provided with upper positioning nut for pusher dog matching bionic pusher dog and lower positioning nut for pusher dog; positioning nut for pusher dog is also the adjusting nut for lower limit of pressure adjusting spring.

8. A type of opening and closing experimental control mechanism featured with bionic function according to Claim 7 is characterized in that the upper part of cylinder is additionally provided with ejector rob sleeve for cylinder; and the ejector rob sleeve for cylinder is also used as the adjusting sleeve for lower limit position of bionic pusher dog.