CN113820058A - Device and method for testing spring force of bolt mechanism of on-load voltage regulating switch - Google Patents
Device and method for testing spring force of bolt mechanism of on-load voltage regulating switch Download PDFInfo
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- CN113820058A CN113820058A CN202111204515.XA CN202111204515A CN113820058A CN 113820058 A CN113820058 A CN 113820058A CN 202111204515 A CN202111204515 A CN 202111204515A CN 113820058 A CN113820058 A CN 113820058A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0057—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to spring-shaped elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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Abstract
The invention discloses a device and a method for testing spring force of a bolt mechanism of an on-load voltage regulating switch. The device comprises a base, a testing device and a control box; the testing device comprises a lower thrust ejector rod, an upper thrust ejector rod, a driving mechanism, a pressure sensor and a distance measuring sensor, wherein the lower thrust ejector rod is used for abutting against the lower end of a tested spring, the upper thrust ejector rod is used for abutting against the upper end of the tested spring, the driving mechanism is used for driving the upper thrust ejector rod to vertically move, the pressure sensor is used for measuring the pressure borne by the upper thrust ejector rod when the spring is compressed, and the distance measuring sensor is used for measuring the length of the spring. The device and the method for testing the spring force of the gun bolt mechanism of the on-load voltage-regulating switch effectively solve the problem of difficult fault judgment caused by overlong switching time in the switching process of the on-load voltage-regulating switch, and can measure the energy storage condition of a spring in a gun striking mechanism, including the length and the compression force of the spring; and the measured data is detected automatically, and errors caused by manual measurement are eliminated, so that errors are generated in fault analysis, and the problem of faults cannot be solved accurately.
Description
Technical Field
The invention relates to the technical field of equipment maintenance, in particular to a device and a method for testing spring force of a bolt mechanism of an on-load voltage regulating switch.
Background
The transformer on-load tap changer bolt machine mechanism is a mechanism for providing on-load tap changer switching energy, the mechanism action is realized by means of two springs for compressing energy storage and then releasing suddenly, the spring energy determines the speed of switch switching, the performance of a switch is directly influenced, the switching process is generally required to be 35-50 ms, if the spring energy storage is insufficient, the time for bridging the transition resistance is too long, the transition resistance can be burnt out, and switch explosion is caused. The action jam of the whole switch besides the spring force which influences the situation can be judged only by the time of measuring the action waveform by a switch characteristic test at present, and the problem can not be detected deeply.
Disclosure of Invention
Aiming at the defects, the invention provides a spring force testing device for an on-load tap changer bolt mechanism, which aims to overcome the defect of spring force testing of the existing on-load tap changer bolt mechanism.
In order to achieve the purpose, the invention adopts the following technical scheme:
a spring force testing device of a bolt mechanism of an on-load voltage regulating switch comprises a base, a testing device and a control box; testing arrangement and control box install on the base, testing arrangement passes through plug wire connection control box, testing arrangement is including:
a lower thrust ejector rod used for ejecting the lower end of the tested spring,
an upper thrust ejector rod used for ejecting the upper end of the tested spring,
a driving mechanism for driving the upper thrust mandril to vertically move,
a pressure sensor for measuring the pressure applied to the upper thrust rod when compressing the spring, and
a distance measuring sensor for measuring the length of the spring,
wherein, pressure sensor and range finding sensor connection control box.
Furthermore, the driving mechanism comprises a guide rod vertically arranged on the base, a top plate fixed at the top of the guide rod, a sliding block sleeved on the guide rod in a sliding manner, a movable screw rod rotatably arranged on the base and parallel to the guide rod, and a motor fixedly arranged on the top plate at the top, wherein the motor is connected with the movable screw rod and drives the movable screw rod to rotate, the sliding block is provided with a screw hole, and the movable screw rod penetrates through the screw hole in a matching manner and is in threaded connection with the sliding block;
the lower thrust ejector rod is fixedly installed on the base, the upper thrust ejector rod is fixedly installed on the bottom surface of the sliding block, the vertical projection of the upper thrust ejector rod and the vertical projection of the lower thrust ejector rod are overlapped, the pressure sensor is installed between the sliding block and the upper thrust ejector rod, and the distance measuring sensor is located between the sliding block and the top plate.
Further, a gear box is installed at the top of the top plate through a gear box seat, the top end of the movable screw is connected with a vertical output shaft of the gear box through an elastic coupling, and the motor is installed on the side face of the gear box and connected with a horizontal output shaft of the gear box.
Further, the base comprises a base plate, wherein base rubber pads are installed below four corners of the base plate, and the testing device and the control box are installed on the base plate.
Furthermore, the control box comprises a control box body with a control system, a control screen is embedded into the box surface of the control box body, the box body is hollow, a sensor signal collector is installed in the box body, and a power switch and a control cable aviation socket are installed on the back surface of the box body.
Furthermore, the control screen is a manual touch color screen, a programmable controller is arranged in the control screen, information parameters can be set, the motor is controlled to start and stop, and the pressure value acquired by the pressure sensor and the length value acquired by the distance measuring sensor are displayed.
Further, the motor is a controllable direct current servo motor.
Furthermore, the lower thrust ejector rod is of a three-section type cylindrical rod-shaped structure, the diameter of the lower section of the cylinder is the smallest and is fixed with the base, the diameter of the middle section of the cylinder is the largest, the outer diameter of the middle section of the cylinder is matched with the outer diameter of the measured spring, and the outer diameter of the upper section of the cylinder is matched with the inner diameter of the measured spring.
Furthermore, the upper thrust ejector rod is of a three-section type cylinder rod-shaped structure, the diameter of the upper section cylinder is the smallest and is fixed with the pressure sensor, the diameter of the middle section cylinder is the largest, the outer diameter of the middle section cylinder is matched with the outer diameter of the measured spring, and the outer diameter of the lower section cylinder is matched with the inner diameter of the measured spring.
The invention also provides a method for testing the spring force of the on-load tap changer bolt mechanism, and the device for testing the spring force of the on-load tap changer bolt mechanism comprises the following steps:
s1, lifting the upper thrust ejector rod to a height which can be used for placing a spring through the driving mechanism;
s2, penetrating the spring into the lower thrust ejector rod, slowly descending the upper thrust ejector rod through the driving mechanism, and penetrating the upper thrust ejector rod into the spring;
s3, continuously descending the upper thrust ejector rod to compress the spring to be measured until the spring can not be compressed again, and obtaining the length of the spring through the distance measuring sensor;
s4, lifting the upper thrust ejector rod through the driving mechanism, and stopping the machine after the tested spring is completely relaxed;
s5, descending the upper thrust ejector rod again through the driving mechanism, automatically recording the pressure value at the moment through the pressure sensor when the spring is detected to be compressed to the spring length measured last time, and stopping the machine;
and S6, lifting the upper thrust ejector rod through the driving mechanism, and taking out the tested spring.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a device and a method for testing spring force of a bolt mechanism of an on-load tap changer, which effectively solve the problem of difficult fault judgment caused by overlong switching time in the switching process of the on-load tap changer and can measure the energy storage condition of a spring in a bolt mechanism, including the length and the compression force of the spring;
2. the measured data of the invention is detected automatically, and the error caused by manual measurement is eliminated, so that the fault analysis is wrong, and the fault problem can not be solved accurately;
3. the invention has simple operation, automatic data acquisition, and scientific and accurate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a schematic view of a testing apparatus according to the present invention;
FIG. 2 is a schematic view of the testing device of the present invention from another perspective;
FIG. 3 is a schematic diagram of an embodiment of the testing apparatus of the present invention.
Wherein the labels shown in the figures are: 1-base plate, 2-bottom rubber cushion, 3-lower thrust ejector rod, 4-spring, 5-upper thrust ejector rod, 6-pressure sensor, 7-slide block 7, 8-guide rail, 9-movable screw rod, 10-top plate, 11-elastic coupling, 12-gear box, 13-motor, 14-gear box seat, 15-control screen, 16-box body, 17-power switch and 18-control cable aviation socket; 19-a distance measuring sensor.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a device for testing spring force of a bolt mechanism of an on-load tap changer, which mainly includes a base, a testing device and a control box, wherein the testing device and the control box are installed on the base, and the testing device is connected to the control box through a plug wire.
With reference to fig. 1 and fig. 2, the testing device includes a lower push rod 3 for supporting the lower end of the tested spring, an upper push rod 5 for supporting the upper end of the tested spring, a driving mechanism for driving the upper push rod 5 to move vertically, a pressure sensor 6 for measuring the pressure applied to the upper push rod 5 when the spring is compressed, and a distance measuring sensor 19 for measuring the length of the spring, wherein the pressure sensor 6 and the distance measuring sensor 19 are connected to the control box.
The base comprises a base plate 1, wherein base rubber pads 2 are arranged below four corners of the base plate 1 to have the advantages of skid resistance and stable placement, and the testing device and the control box are arranged on the base plate 1.
The control box is including the control box 16 that has control system, and embedding has control screen 15 on the face of control box 16, and the inside cavity of box is installed sensor signal collector, and box back mounted power switch 17 and control cable aviation socket 18, control cable aviation socket 18 are used for being connected with external power supply through the plug cable, and power switch 17 control circuit break-make. The control screen 15 is a manual touch color screen, is internally provided with a programmable controller, can set information parameters, controls the motor 13 to start and stop, and displays the pressure value acquired by the pressure sensor 6 and the length value acquired by the distance measuring sensor 19.
The driving mechanism comprises a guide rod 8 vertically arranged on the base, a top plate 10 fixed at the top of the guide rod 8, a sliding block 7 sleeved on the guide rod 8 in a sliding manner, a movable screw 9 rotatably arranged on the base and parallel to the guide rod 8, and a motor 13 fixedly arranged on the top plate 10.
In the preferred embodiment, the lower thrust ejector rod 3 is fixed on the base and is vertically installed, the upper end of the upper thrust ejector rod 5 is connected with the pressure sensor 6 and is vertically installed, and the vertical projection of the upper thrust ejector rod 5 and the vertical projection of the lower thrust ejector rod 3 coincide; the upper end of the pressure sensor 6 is connected with a slide block 7, the lower end is connected with an upper thrust ejector rod 5, the side surface is provided with a data wire connection port, the data wire is connected with a control box, and the data wire connection port is particularly connected with a sensor signal collector of the control box; the distance measuring sensor 19 is positioned between the sliding block 7 and the top plate 10, a data wire connection port is arranged on the side surface, the data wire connection port is connected with the control box, and the distance measuring sensor is particularly connected with a sensor signal collector of the control box; the lower surface of the sliding block 7 is connected with a pressure sensor 6, holes are formed on two sides of the sliding block, the sliding block respectively penetrates through a guide rail 8, a screw hole is formed in the middle of the sliding block, and a movable screw 9 is screwed in the screw hole; the lower end of the guide rail 8 is fixed on the base plate 1 and is vertically installed, the upper part of the guide rail is fixedly connected with the top plate 10 to form a fixed square frame, the middle of the guide rail passes through the sliding block 7 through a through hole to limit the sliding block 7 to move up and down in the guide rail, namely the sliding block 7 can only move up and down along the axial direction of the guide rail 8; the lower end of the movable screw 9 is embedded into a bearing, the bearing is fixed on the base plate 1 and is vertically installed, the upper part of the movable screw penetrates through a central hole of the top plate 10, the movable screw is connected with a motor 13 and can rotate under the driving of the motor 13, the middle of the movable screw is screwed into a screw hole of the sliding block 7 and is in threaded connection, and the sliding block 7 can be driven to move upwards or downwards when the movable screw rotates clockwise or anticlockwise; through holes are processed on two sides of the top plate 10, the guide rail 8 is fixed, and a central processing through hole penetrates through the movable screw 9. Further, a gear box 12 is mounted on the top of the top plate 10 through a gear box base 14, the top end of the movable screw 9 is connected with a vertical output shaft of the gear box 12 through an elastic coupling 11, and a motor 13 is mounted on the side of the gear box 12 and connected with a horizontal output shaft of the gear box 12.
Lower thrust ejector pin 3 is syllogic cylinder rod-shaped structure, and hypomere cylinder diameter is minimum, and central processing has the screw, and 1 bolt fastening that uses of embedding bed plate, middle section cylinder diameter is the biggest, and the external diameter suits with the measured spring external diameter, thereby also the external diameter of lower thrust ejector pin 3 imitates with the measured spring external diameter and can withstand the spring tip, and upper segment cylinder external diameter suits with the measured spring internal diameter to can penetrate the bottom of being measured the spring.
Go up thrust ejector pin 5 and be syllogic cylinder rod-shaped structure, upper segment cylinder diameter is minimum, and central processing has the screw, with 6 bolt fixings of pressure sensor, middle section cylinder diameter is the biggest, and the external diameter suits with being surveyed the spring external diameter, thereby also the external diameter of going up thrust ejector pin 5 imitates with being surveyed the spring external diameter and can withstand the spring tip, and hypomere cylinder external diameter suits with being surveyed the spring internal diameter to can penetrate the top of being surveyed the spring.
And the upper section cylinder of the lower thrust ejector rod 3 and the lower section cylinder of the upper thrust ejector rod 5 penetrate into the tested spring, so that the spring can be effectively prevented from popping up during testing, the testing result is prevented from being influenced, and the spring is prevented from popping up to hurt people.
The pressure sensor 6 is cylindrical, the upper surface and the lower surface of the pressure sensor are fixedly provided with bolts, the upper surface of the pressure sensor is connected with the sliding block 7, the lower surface of the pressure sensor is connected with the upper thrust ejector rod 5, and the side surface of the pressure sensor is provided with a data wire connection port which is electrically connected with the control box so as to transmit detection data to the control box.
The distance measuring sensor 19 is arranged between the sliding block 7 and the top plate 10, a data wire connection port is arranged on the side surface and is electrically connected with the control box to transmit detection data to the control box, the distance measuring sensor selects a stay wire sensor or a magnetic grid ruler, and the length of the measured spring is indirectly obtained by measuring the displacement of the sliding block 7.
The slider 7 is a rectangular plate, two through holes are processed, the hole diameter is adapted to the guide rail 8, the guide rail 8 penetrates through the through holes, a screw hole is processed in the middle and adapted to the movable screw 9, the movable screw 9 can be freely rotated in a screwing mode, a screw hole is processed in the center and adapted to a fixing bolt of the pressure sensor 6, and a fixing bolt of the pressure sensor 6 can be screwed in, so that the pressure sensor 6 is fixed to the bottom surface of the slider 7, a screw hole is processed in the side surface and adapted to a fixing bolt of the distance measuring sensor 19, the fixing bolt of the distance measuring sensor 19 can be screwed in, and the distance measuring sensor 19 is fixed to the side surface of the slider 7.
The guide rail 8 is a round steel bar, the outer surface is smooth, screw holes are respectively processed at two ends and are respectively fixed on the base plate 1 and the top plate 10.
The movable screw 9 is a fine-grained screw, the lower end of the movable screw is embedded with a bearing and is fixed on the base plate 1 through the bearing, and the upper end of the movable screw is fixed on the elastic coupling 11.
The top plate 10 is a rectangular plate, two short sides are processed with 2 through holes, the guide rails 8 are respectively fixed, a central processing through hole can pass through the movable screw 9, two long side processing through holes can fix the gear box base 14, the side face is processed with a screw hole, the screw hole is matched with a distance measuring sensor 19 fixing bolt, and the distance measuring sensor 19 fixing bolt can be screwed in, so that the distance measuring sensor 19 is fixed on the side face of the top plate 10.
The elastic coupling 11 is a two-half cylinder matched with a 3-petal concave-convex table, a gap is arranged between the upper half cylinder and the lower half cylinder, a hole is processed in the center, and the elastic coupling can be connected with a vertical output shaft of the movable screw 9 and the gear box 12.
The gear box seat 14 is a reverse buckling groove-shaped steel plate, a screw hole is processed on the lower leg, the gear box seat can be installed and fixed on the top plate 10, a through hole is processed in the center of the gear box seat 14, and the gear box seat is vertical to the output shaft through the gear box 12.
The bevel gear which is transversely input and longitudinally output is arranged in the gear box 12 and is transversely connected with a rotor rotating shaft of the motor 13 and is longitudinally connected with the elastic coupling 11.
The motor 13 is a controllable direct current servo motor, and the motor 13 is connected with and controlled by the control box through a cable.
Referring to fig. 3, fig. 3 shows an example of the fact that the spring 4 to be tested is installed between the lower thrust push rod 3 and the upper thrust push rod 5, the top of the spring 4 is sleeved on the lower section column of the upper thrust push rod 5, and the bottom is sleeved on the upper section column of the lower thrust push rod 3.
The invention relates to a method for testing the spring force of a gun bolt mechanism of an on-load tap changer, which adopts the device for testing the spring force of the gun bolt mechanism of the on-load tap changer and comprises the following steps:
s1, lifting the upper thrust ejector rod 5 to a height which can be used for placing a spring through a driving mechanism;
firstly, turning on a power switch 17, lightening a control screen 15, then controlling a motor 13 through the control screen 15 to drive a sliding block 7 to ascend and drive an upper thrust ejector rod 5 to ascend, and placing a tested spring 4 at the moment;
s2, penetrating the spring 4 into the lower thrust ejector rod 3, slowly descending the upper thrust ejector rod 5 through the driving mechanism, and penetrating into the spring 5;
the bottom of the spring 4 penetrates into the lower thrust ejector rod 3, the top of the spring is aligned with the upper thrust ejector rod 5, and the control screen 15 controls the motor 13 to drive the sliding block 7 to descend and drive the upper thrust ejector rod 5 to descend, so that the upper thrust ejector rod 5 penetrates into the spring 5;
s3, continuously descending the upper thrust ejector rod 5 to compress the measured spring 4 until the spring 4 can not be compressed again, and obtaining the length of the spring through the distance measuring sensor 19;
the spring 4 has a pressed limit calibration value, the spring 4 can provide a directional force for the upper thrust ejector rod 5 when being pressed and is measured by the pressure sensor 6, the spring 4 cannot be compressed continuously when reaching the limit calibration value, the original distance value between the upper thrust ejector rod 5 and the lower thrust ejector rod 3 is known, the upper thrust ejector rod 5 can be sensed and recorded by the pressure sensor 6 when contacting the spring 4, the spring 4 cannot be compressed from the contact of the upper thrust ejector rod 5 with the spring 4, the compression amount of the spring 4 can be measured by the distance measuring sensor 19, the data can be transmitted to the control box, and the control box can obtain the length of the spring at the moment through calculation and conversion;
s4, lifting the upper thrust ejector rod 5 through the driving mechanism, and stopping the machine after all the tested springs are relaxed;
wherein, the control panel 15 controls the motor 13 to drive the upper thrust mandril 5 to rise to a certain position and release the compression of the spring 4, so that the spring 4 is completely relaxed;
s5, descending the upper thrust ejector rod 5 again through the driving mechanism, automatically recording the pressure value at the moment through the pressure sensor 6 when the spring is detected to be compressed to the spring length measured last time, and stopping the machine;
the control screen 15 is used for controlling the motor 13 to drive the upper thrust ejector rod 5 to descend and compress the spring 4, when the spring 4 is compressed to the spring length measured last time, the pressure sensor 6 obtains a compression feedback pressure value, and at the moment, the spring length and the compression force can be automatically obtained simultaneously so as to realize spring testing;
and S6, completing the test, lifting the upper thrust ejector rod 5 through the driving mechanism, enabling the upper thrust ejector rod 5 to be located at the height capable of taking out the spring 4, taking out the tested spring 4, and completing the whole test.
The invention provides a device and a method for measuring the energy storage condition of a spring in a gunshot mechanism by using a device and a method for testing the spring force of the gunshot mechanism of an on-load voltage-regulating switch, wherein the device comprises the length and the compression force of the spring, and the device is used for full-automatic measurement.
The invention effectively solves the problem of difficult fault judgment caused by overlong switching time in the switching process of the on-load voltage regulating switch, and can measure the energy storage condition of the spring in the gunshot mechanism, including the length and the compression force of the spring; the measured data of the invention is detected automatically, and the error caused by manual measurement is eliminated, so that the fault analysis is wrong, and the fault problem can not be solved accurately; the invention has simple operation, automatic data acquisition, and scientific and accurate.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A spring force testing device of a bolt mechanism of an on-load voltage regulating switch comprises a base, a testing device and a control box; testing arrangement and control box install on the base, testing arrangement passes through plug wire connection control box, its characterized in that: the testing device comprises:
a lower thrust ejector rod (3) for ejecting the lower end of the tested spring,
an upper thrust ejector rod (5) for ejecting the upper end of the tested spring,
a driving mechanism for driving the upper thrust ejector rod (5) to move vertically,
a pressure sensor (6) for measuring the pressure to which the upper thrust plunger (5) is subjected when compressing the spring, and
a distance measuring sensor (19) for measuring the length of the spring,
wherein, the pressure sensor (6) and the distance measuring sensor (19) are connected with the control box.
2. The on-load tap changer bolt machine mechanism spring force testing device of claim 1, characterized in that: the driving mechanism comprises a guide rod (8) vertically arranged on the base, a top plate (10) fixed at the top of the guide rod (8), a sliding block (7) sleeved on the guide rod (8) in a sliding manner, a movable screw rod (9) rotatably arranged on the base and parallel to the guide rod (8), and a motor (13) fixedly arranged on the top plate (10), wherein the motor (13) is connected with the movable screw rod (9) and drives the movable screw rod (9) to rotate, a screw hole is formed in the sliding block (7), and the movable screw rod (9) penetrates through the screw hole in a matched manner and is in threaded connection with the sliding block (7);
lower thrust ejector pin (3) fixed mounting is on the base, go up thrust ejector pin (5) fixed mounting on the bottom surface of slider (7), go up thrust ejector pin (5) and the coincidence of lower thrust ejector pin (3) vertical projection, install between slider (7) and last thrust ejector pin (5) pressure sensor (6), range sensor (19) are located between slider (7) and roof (10).
3. The on-load tap changer bolt machine mechanism spring force testing device of claim 2, characterized in that: the top of roof (10) is installed gear box (12) through gear box seat (14), the top of activity screw rod (9) is connected with the vertical output shaft of gear box (12) through elastic coupling (11), motor (13) are installed in the side of gear box (12) and are connected with the horizontal output shaft of gear box (12).
4. The on-load tap changer bolt machine mechanism spring force testing device of claim 1, characterized in that: the base comprises a base plate (1), wherein base rubber pads (2) are arranged below four corners of the base plate (1), and the testing device and the control box are arranged on the base plate (1).
5. The on-load tap changer bolt machine mechanism spring force testing device of claim 1, characterized in that: the control box comprises a control box body (16) with a control system, a control screen (15) is embedded into the surface of the control box body (16), the box body is hollow, a sensor signal collector is installed, and a power switch (17) and a control cable aviation socket (18) are installed on the back of the box body.
6. The on-load tap changer bolt mechanism spring force testing device of claim 5, characterized in that: the control screen (15) is a manual touch color screen, a programmable controller is arranged in the control screen, information parameters can be set, the motor (13) is controlled to start and stop, and the pressure value acquired by the pressure sensor (6) and the length value acquired by the distance measuring sensor (19) are displayed.
7. The on-load tap changer bolt machine mechanism spring force testing device of claim 2, characterized in that: the motor (13) is a controllable direct current servo motor.
8. The on-load tap changer bolt machine mechanism spring force testing device of claim 2, characterized in that: the lower thrust ejector rod (3) is of a three-section type cylindrical rod-shaped structure, the diameter of the lower section of the cylinder is the smallest and is fixed with the base, the diameter of the middle section of the cylinder is the largest, the outer diameter of the middle section of the cylinder is matched with the outer diameter of the measured spring, and the outer diameter of the upper section of the cylinder is matched with the inner diameter of the measured spring.
9. The on-load tap changer bolt machine mechanism spring force testing device of claim 2, characterized in that: the upper thrust ejector rod (5) is of a three-section type cylindrical rod-shaped structure, the diameter of the upper section of the cylinder is the smallest and is fixed with the pressure sensor (6), the diameter of the middle section of the cylinder is the largest, the outer diameter of the middle section of the cylinder is matched with the outer diameter of a tested spring, and the outer diameter of the lower section of the cylinder is matched with the inner diameter of the tested spring.
10. An on-load tap changer bolt machine spring force testing method, which adopts the on-load tap changer bolt machine spring force testing device of any one of the claims 1 to 9, and is characterized by comprising the following steps:
s1, lifting the upper thrust ejector rod (5) to a height which can be used for placing a spring through the driving mechanism;
s2, penetrating the spring into the lower thrust ejector rod (3), slowly descending the upper thrust ejector rod (5) through the driving mechanism, and penetrating into the spring;
s3, continuing to descend the upper thrust ejector rod (5) to compress the measured spring until the spring can not be compressed again, and obtaining the length of the spring through the distance measuring sensor (19);
s4, lifting the upper thrust ejector rod (5) through the driving mechanism, and stopping the machine after all the tested springs are relaxed;
s5, descending the upper thrust ejector rod (5) again through the driving mechanism, automatically recording the pressure value at the moment through the pressure sensor (6) when the spring is detected to be compressed to the spring length measured last time, and stopping the machine;
and S6, lifting the upper thrust ejector rod (5) through the driving mechanism, and taking out the measured spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111204515.XA CN113820058A (en) | 2021-10-15 | 2021-10-15 | Device and method for testing spring force of bolt mechanism of on-load voltage regulating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111204515.XA CN113820058A (en) | 2021-10-15 | 2021-10-15 | Device and method for testing spring force of bolt mechanism of on-load voltage regulating switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370799A (en) * | 2021-12-31 | 2022-04-19 | 浙江兰菱机械股份有限公司 | Spring compression height detection method |
| CN114674270A (en) * | 2022-04-08 | 2022-06-28 | 重庆交通职业学院 | Single-rail type tire surface shape measuring device and measuring method thereof |
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| CN206930419U (en) * | 2017-01-17 | 2018-01-26 | 西华大学 | A kind of spring rate test machine |
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| CN210863005U (en) * | 2019-09-24 | 2020-06-26 | 天津维一自行车有限公司 | Spring pressure value test machine that protecting effect is good |
| CN212482844U (en) * | 2020-05-28 | 2021-02-05 | 福建永动力弹簧科技有限公司 | Detection apparatus convenient to detect spring force |
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| CN201964990U (en) * | 2011-01-17 | 2011-09-07 | 卓旦春 | Spring elasticity test device |
| CN206930419U (en) * | 2017-01-17 | 2018-01-26 | 西华大学 | A kind of spring rate test machine |
| CN107860564A (en) * | 2017-09-25 | 2018-03-30 | 广西电网有限责任公司电力科学研究院 | A kind of flaccid state online testing device for primary cut-out operation spring |
| CN210863005U (en) * | 2019-09-24 | 2020-06-26 | 天津维一自行车有限公司 | Spring pressure value test machine that protecting effect is good |
| CN212482844U (en) * | 2020-05-28 | 2021-02-05 | 福建永动力弹簧科技有限公司 | Detection apparatus convenient to detect spring force |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370799A (en) * | 2021-12-31 | 2022-04-19 | 浙江兰菱机械股份有限公司 | Spring compression height detection method |
| CN114370799B (en) * | 2021-12-31 | 2023-07-28 | 浙江兰菱机械股份有限公司 | Spring pressure and height detection method |
| CN114674270A (en) * | 2022-04-08 | 2022-06-28 | 重庆交通职业学院 | Single-rail type tire surface shape measuring device and measuring method thereof |
| CN114674270B (en) * | 2022-04-08 | 2023-09-12 | 重庆交通职业学院 | Single-rail tire surface shape measuring device and measuring method thereof |
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