CN111413076A - Rotation testing device and method - Google Patents
Rotation testing device and method Download PDFInfo
- Publication number
- CN111413076A CN111413076A CN202010273485.7A CN202010273485A CN111413076A CN 111413076 A CN111413076 A CN 111413076A CN 202010273485 A CN202010273485 A CN 202010273485A CN 111413076 A CN111413076 A CN 111413076A
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- Prior art keywords
- switch
- excavator
- induction
- contact
- inductive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
Abstract
The invention discloses a rotation testing device, which relates to excavator testing and solves the technical problem of low precision of the existing rotation testing mode, and comprises a first inductive switch, a first inductive contact assembly, a second inductive switch, a second inductive contact assembly, a timer, a pressure testing component and a pressure monitor; the first induction switch and the second induction switch are mounted on the excavator rotation supporting seat, the first induction contact assembly is mounted on an excavator platform and corresponds to the position of the first induction switch, the second induction contact assembly is mounted on the excavator platform and corresponds to the position of the second induction switch, the first induction switch is connected with the whole electromagnetic valve through the selection circuit, and the second induction switch is electrically connected with the timer. The invention also discloses a rotation testing method. According to the invention, the induction switch is used for controlling the excavator to stop to obtain the braking angle, the pressure monitor is used for obtaining the braking time, and the timer is used for obtaining the rotation speed, so that the testing precision can be improved.
Description
Technical Field
The present invention relates to excavator testing, and more particularly, to a swing testing apparatus and method.
Background
The slewing brake angle, the slewing time and the slewing speed are important performance parameters of the excavator, and the working performance of the excavator can be effectively evaluated by accurately measuring the slewing brake angle, the slewing time and the slewing speed. The rotation braking and rotation speed test of the existing excavator depends on manual nipping and table matching test, and the test precision is low and the accuracy is poor.
Disclosure of Invention
The present invention is directed to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a rotation testing apparatus capable of improving testing accuracy.
The invention also aims to provide a rotation testing method capable of improving the testing precision.
In order to achieve the first purpose, the invention provides a rotation testing device, which comprises a first induction switch, a first induction contact assembly, a second induction switch, a second induction contact assembly, a timer, a pressure testing component for detecting the oil pressure in a rotation motor of the whole machine, and a pressure monitor electrically connected with the pressure testing component; the first induction switch and the second induction switch are mounted on an excavator rotation supporting seat, the first induction contact assembly is mounted on an excavator platform and corresponds to the position of the first induction switch, the second induction contact assembly is mounted on the excavator platform and corresponds to the position of the second induction switch, the first induction switch is connected with a whole machine electromagnetic valve through a selection circuit, and the second induction switch is electrically connected with the timer.
As a further improvement, the selection circuit comprises a selection switch and a power supply; the whole electromagnetic valve is connected with the first contact of the selector switch in series and then connected with two ends of the power supply, the whole electromagnetic valve is connected with the second contact of the selector switch and the first inductive switch in series in sequence and then connected with two ends of the power supply, and the power end of the timer is connected with the power supply.
Furthermore, the pressure testing assembly comprises a first pressure sensor and a second pressure sensor which are electrically connected with the pressure monitor, the first pressure sensor is installed at the port A of the complete machine rotation motor, and the second pressure sensor is installed at the port B of the complete machine rotation motor.
Further, the first inductive switch is a normally closed contact switch.
Further, the second inductive switch is a normally open contact switch.
Further, the power supply is a complete machine power supply or an external power supply.
In order to achieve the second object, the present invention provides a gyration testing method, comprising:
starting and stably operating the excavator;
when a slewing brake angle is tested, switching a selection switch to a first contact, controlling the excavator to continuously rotate for N1 circles according to a set standard action, switching the selection switch to a second contact, turning off the excavator after the excavator automatically stops slewing, measuring the arc length between a first induction switch and a first induction contact assembly, and calculating to obtain the slewing brake angle according to the arc length; obtaining the rotary braking time according to a pressure curve in the pressure monitor during rotary braking;
when the slewing speed is tested, the selector switch is switched to the first contact, after the excavator is controlled to rotate for N2 circles continuously, N2-1 groups of time are read from the timer, N2-2 groups of time are obtained by removing the first group of time, and the slewing speed is obtained by averaging the N2-2 groups of time.
Advantageous effects
Compared with the prior art, the invention has the advantages that: according to the invention, the first induction switch and the first induction contact assembly are used for controlling the excavator to automatically stop rotating, the arc length between the starting point and the ending point of the rotation brake of the excavator can be accurately obtained according to the first induction switch and the first induction contact assembly, and the accurate rotation brake angle can be obtained through calculation according to the arc length; the oil pressure in the whole rotary motor is detected through the pressure testing assembly and the pressure monitor, and the accurate rotary braking time can be obtained according to the pressure curve in the pressure monitor during rotary braking; the accurate time of each circle of rotation can be obtained through the second inductive switch, the second inductive contact assembly and the timer, and the accurate rotation speed can be obtained by averaging according to a plurality of groups of rotation time.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure in the direction M in FIG. 1;
FIG. 3 is a schematic view of the structure in the direction N in FIG. 1;
FIG. 4 is a circuit diagram of the present invention;
FIG. 5 is a graph of a pressure monitor according to the present invention.
Wherein: the system comprises a first induction contact assembly, a second induction contact assembly, a 3-complete machine rotation motor, a 4-pressure monitor, a 5-excavator rotation support seat, a 6-excavator platform, a 7-first pressure sensor, an 8-second pressure sensor, a 9-wire harness, a 10-wire harness, an A-first contact, a B-second contact, an SB 1-selector switch, an SB 2-first induction switch, an SB 3-second induction switch, a KV 1-complete machine electromagnetic valve, a BG-power supply and a T1-timer.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 1-5, a rotation testing apparatus includes a first inductive switch SB2, a first inductive contact assembly 1, a second inductive switch SB3, a second inductive contact assembly 2, a timer T1, a pressure testing component for detecting the oil pressure in a complete machine rotation motor 3, and a pressure monitor 4 electrically connected to the pressure testing component. The pressure testing assembly is connected to the pressure monitor 4 by a wiring harness 10. First inductive switch SB2, second inductive switch SB3 are installed in excavator gyration supporting seat 5, and first inductive contact assembly 1 is installed in excavator platform 6 and corresponding with the position of first inductive switch SB2, and first inductive contact assembly 1 includes interconnect's first support, first contact, and first support is used for connecting excavator platform 6, and first contact is used for making first inductive switch SB2 switch on or close. The second sensing contact assembly 2 is installed on the excavator platform 6 and corresponds to the position of the second sensing switch SB3, the second sensing contact assembly 2 comprises a second bracket and a second contact which are connected with each other, the second bracket is used for connecting the excavator platform 6, and the second contact is used for enabling the second sensing switch SB3 to be switched on or off. The first inductive switch SB2 is connected with the whole machine electromagnetic valve KV1 through a selection circuit, the whole machine electromagnetic valve KV1 is used for controlling the whole machine operation of the excavator, and the whole machine operation of the excavator can be controlled through the first inductive switch SB 2. The second inductive switch SB3 is electrically connected to the timer T1, and the timer T1 can indicate the time between two input signals of the second inductive switch SB 3. The second inductive switch SB3 is connected to the timer T1 via the wiring harness 9.
The selection circuit comprises a selection switch SB1 and a power supply BG; the whole machine electromagnetic valve KV1 is connected with the first contact A of the selector switch SB1 in series and then connected with the two ends of the power supply BG, the whole machine electromagnetic valve KV1 is connected with the second contact B of the selector switch SB1 in series and then connected with the two ends of the power supply BG after the first inductive switch SB2 in sequence, and the power supply end of the timer T1 is connected with the power supply BG. The power end of the pressure monitor 4 is connected with a power BG or an independent power supply. The whole electromagnetic valve KV1 is provided with the one-way diode D1 in parallel, high back-pressure self-induction potential can be generated at the moment when the whole electromagnetic valve KV1 is switched on and off, the potential has great breakdown threat on circuit elements, the one-way diode D1 can play a role in short circuit on the back-pressure potential, the whole electromagnetic valve KV1 and the one-way diode D1 form a reasonable loop, and the potential is prevented from influencing the circuit elements.
The pressure testing component comprises a first pressure sensor 7 and a second pressure sensor 8 which are electrically connected with the pressure monitor 4, the first pressure sensor 7 is installed at the port A of the whole machine rotary motor 3, the second pressure sensor 8 is installed at the port B of the whole machine rotary motor 3, and the pressure monitor 4 is used for monitoring the oil pressure of the port A and the port B of the whole machine rotary motor 3 in real time and drawing a pressure and time curve. The first inductive switch SB2 is a normally closed contact switch, the second inductive switch SB3 is a normally open contact switch, and the power BG is a complete machine power supply or an external power supply. The first and second inductive switches SB2, SB3 may be photoelectric switches or mechanical contact switches or proximity switches.
The gyration testing device according to the present invention can at least realize the following gyration testing methods:
starting and stably operating the excavator;
when a slewing brake angle is tested, the selector switch SB1 is switched to the first contact A, the excavator is controlled to rotate for N1 circles continuously according to the set standard action, the selector switch SB1 is switched to the second contact B, the excavator is turned off after the excavator stops slewing automatically, the arc length between the first induction switch SB2 and the first induction contact assembly 1 is measured, and the slewing brake angle is obtained through calculation according to the arc length; obtaining the rotary braking time t according to a pressure curve in the pressure monitor 4 during rotary braking; the standard motion is the standard motion specified by 9.1.1.1 in GB-T7586-2018, N1 is 3-5, the rotation braking angle and the rotation braking time of the bucket under no-load and full-load conditions can be respectively tested, and the rotation can be forward rotation or reverse rotation;
when the rotation speed is tested, the selector switch SB1 is switched to the first contact A, after the excavator is controlled to rotate for N2 circles continuously, N2-1 groups of time are read from the timer T1, N2-2 groups of time are obtained by removing the first group of time, and the rotation speed is obtained by averaging the N2-2 groups of time; n2 is 5-8, can test the gyration speed of scraper bowl under unloaded, full load respectively, and the gyration can be forward rotation or reverse rotation.
The above is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that several variations and modifications can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (7)
1. A rotary testing device is characterized by comprising a first induction switch (SB2), a first induction contact assembly (1), a second induction switch (SB3), a second induction contact assembly (2), a timer (T1), a pressure testing component for detecting the oil pressure in a rotary motor (3) of the whole machine, and a pressure monitor (4) electrically connected with the pressure testing component; first inductive switch (SB2), second inductive switch (SB3) install in excavator gyration supporting seat (5), first inductive contact assembly (1) install in excavator platform (6) and with first inductive switch (SB2) the position is corresponding, second inductive contact assembly (2) install in excavator platform (6) and with the position of second inductive switch (SB3) is corresponding, first inductive switch (SB2) pass through selection circuit and connect complete machine solenoid valve (KV1), second inductive switch (SB3) electric connection time-recorder (T1).
2. A revolution testing device according to claim 1, characterized in that said selection circuit comprises a selection switch (SB1), a power supply (BG); complete machine solenoid valve (KV1) concatenate connect in behind selector switch (SB1) first contact (A) in the both ends of power (BG), complete machine solenoid valve (KV1) concatenate in proper order behind selector switch (SB1) second contact (B), first inductive switch (SB2) connect in the both ends of power (BG), the power end of timer (T1) is connected power (BG).
3. A rotary testing device according to claim 1, wherein the pressure testing assembly comprises a first pressure sensor (7) and a second pressure sensor (8) electrically connected to the pressure monitor (4), the first pressure sensor (7) is installed at the port a of the complete rotary motor (3), and the second pressure sensor (8) is installed at the port B of the complete rotary motor (3).
4. A revolution testing device according to claim 1, characterized in that said first inductive switch (SB2) is a normally closed contact switch.
5. A revolution testing device according to claim 1, characterized in that said second inductive switch (SB3) is a normally open contact switch.
6. A revolution testing device according to any of claims 2-5, characterized in that said power supply (BG) is a whole machine power supply or an external power supply.
7. A method of slew testing, the method comprising:
starting and stably operating the excavator;
when a slewing brake angle is tested, switching a selector switch (SB1) to a first contact (A), controlling the excavator to continuously rotate for N1 circles according to a set standard action, switching the selector switch (SB1) to a second contact (B), turning off the excavator after the excavator automatically stops slewing, measuring the arc length between a first induction switch (SB2) and a first induction contact assembly (1), and calculating the slewing brake angle according to the arc length; the rotary braking time is obtained according to a pressure curve in the pressure monitor (4) during rotary braking;
when the slewing speed is tested, a selector switch (SB1) is switched to a first contact (A), after the excavator is controlled to rotate for N2 circles continuously, N2-1 groups of time are read from a timer (T1), N2-2 groups of time are obtained by removing the first group of time, and the slewing speed is obtained by averaging according to the N2-2 groups of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010273485.7A CN111413076A (en) | 2020-04-09 | 2020-04-09 | Rotation testing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010273485.7A CN111413076A (en) | 2020-04-09 | 2020-04-09 | Rotation testing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111413076A true CN111413076A (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010273485.7A Pending CN111413076A (en) | 2020-04-09 | 2020-04-09 | Rotation testing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111413076A (en) |
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2020
- 2020-04-09 CN CN202010273485.7A patent/CN111413076A/en active Pending
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