WO2008144983A1

WO2008144983A1 - An electronic pull-ruler for laser tracking positioning in a wheel dynamic balancer

Info

Publication number: WO2008144983A1
Application number: PCT/CN2007/070072
Authority: WO
Inventors: Yunkui Zhang
Original assignee: Yunkui Zhang
Priority date: 2007-06-01
Filing date: 2007-06-01
Publication date: 2008-12-04

Abstract

An electronic pull-ruler for laser tracking positioning in a wheel dynamic balancer comprises a ruler head (1), an outer pole (2), an inner pole (3), a bracket (4), a linear resistor (5), a sliding rail (6), a carbon brush assembly (7), a rotation shaft (8), a shaft sleeve (9), a potentiometer assembly (10) and a photoelectric sensor (11). The ruler head (1) is composed of a motor fixing base (12), a step motor (13), a rotation head (14), an optical dot laser indicator (15) and a first jacking screw (16). The photoelectric sensor (11) is fixed on the outer wall of the front end of the inner pole (3). The front end of the inner pole (3) is fixed and connected with the rear end of the motor fixing base (12). The step motor (13) is fixed within the motor fixing base (12). The driving output shaft of the step motor (13) is fixed and connected with the rotation head (14) on the motor fixing base (12). The optical dot laser indicator (15) and the first jacking screw (16) are fixed on the rotation head (14). The first jacking screw (16) is positioned on a circumference corresponding to the groove (17) of the photoelectric sensor (11).

Description

Laser tracking positioning wheel dynamic balancing machine electronic ruler

The utility model relates to a tool for detecting wheel parameter measurement and a wheel unbalance point tracking indication tool for detecting wheel dynamic balance.

Background technique

A Chinese utility model patent with the authorization bulletin number CN2888430Y and the authorization announcement date of April 11, 2007 discloses a "wheel dynamic balancing machine electronic ruler", which is a laser tube mounted on the electronic ruler head. To complete the indication function of the unbalanced point, the laser tube can only be in the determined position when instructing, and the operator should rotate the wheel according to the prompt of the wheel balancer to make the imbalance point of the wheel coincide with the indicated laser point, and then use the brake. The mechanism locks the wheel and then performs the operation of sticking the lead block. The operation is inconvenient, and the tracking indication function of the wheel unbalance point cannot be realized.

Utility model content

The purpose of the utility model is to provide a laser tracking and positioning wheel dynamic balancing machine electronic ruler, which can solve the problem that the existing electronic balancer of the wheel dynamic balancing machine cannot track the unbalanced point of the wheel.

The utility model comprises a ruler, an outer rod, an inner rod, a bracket, a linear resistance, a sliding rail, a carbon brush assembly, a rotating shaft, a sleeve and a potentiometer assembly; the sleeve is set on a rotating shaft, and the sleeve is sleeved Fixed on the bracket, the upper end of the rotating shaft is fixed to the lower end of the outer rod, the lower end of the rotating shaft is fixed to the potentiometer assembly, the inner wall of the outer rod is provided with a sliding rail, and the inner wall of the outer rod is fixed a linear resistor is disposed, and the rear end of the inner rod is mounted on the sliding rail and is fixed to the carbon brush assembly mounted in the inner cavity of the outer rod; the utility model further includes a photoelectric sensor; the ruler is fixed by a motor, a motor, a rotating head, a spot laser pointer, and a first top wire; the outer wall of the front end of the inner rod is fixed with a photoelectric sensor, and the front end of the inner rod is fixed to the rear end of the motor fixing seat, a motor is fixed in the motor mount, and the power output shaft of the motor is fixed to a rotating head mounted on the motor mount, and the spot laser is fixed on the rotating head and the first a top wire, the first top wire is located in a groove of the photoelectric sensor Corresponding circumference.

The utility model has the following beneficial effects: the utility model can realize the parameter measurement of the wheel dynamic balance and the tracking indication function of the unbalanced point. Measurement function automatically measures the inside of the wheel rim The diameter of any point of the cone, and the A+ value corresponding to this point (distance of the dynamic balancer piezoelectric sensor to this point), the measured result is automatically input into the MCU for processing. The tracking indication function of the unbalanced point is completed by the spot laser pointer and the break-in motor mounted on the ruler of the electronic ruler, and the position of the unbalanced point indicating the wheel is tracked by the spot projected by the spot laser pointer. The unbalanced point of the wheel is indicated in real time, and the operator can easily find the unbalanced point of the wheel according to the spot without rotating and locking the wheel to find the unbalanced point of the wheel. The utility model has an automatic measuring function, a real-time indicating function for the unbalanced point, and a positioning function for the position of the wheel spokes, and has a simple structure and convenient operation.

DRAWINGS

1 is a front view of the overall structure of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a cross-sectional view taken along line AA of FIG. 1, FIG. 4 is an enlarged view of a portion B of FIG. 1, and FIG. Figure 6 is a front view showing the diameter of the wheel rim by the present invention, Figure 7 is a plan view of Figure 6, and Figure 8 is a schematic view of calculating the angle of rotation of the motor when the laser spot is in real time indication.

detailed description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the present embodiment will be described with reference to FIG. 1 to FIG. 5. This embodiment is composed of a ruler 1, an outer rod 2, an inner rod 3, a bracket 4, a linear resistor 5, a slide rail 6, a carbon brush assembly 7, and a rotation. The shaft 8 , the sleeve 9 , the potentiometer assembly 10 , and the photoelectric sensor 11 are formed; the sleeve 9 is sleeved on the rotating shaft 8 , and the sleeve 9 is fixed on the bracket 4 , and the upper end and the outer end of the rotating shaft 8 The lower end of the rod 2 is fixed, the lower end of the rotating shaft 8 is fixed to the potentiometer assembly 10, the inner wall of the outer rod 2 is provided with a sliding rail 6, and the inner wall of the outer rod 2 is fixed with a linear resistor 5, The rear end of the inner rod 3 is mounted on the slide rail 6 and is fixed to the carbon brush assembly 7 mounted in the inner cavity of the outer rod 2; the scale head 1 is composed of a motor mount 12, a motor 13 and a rotary head 14, The spot laser pointer 15 and the first top wire 16 are formed; the outer wall of the front end of the inner rod 3 is fixed with a photoelectric sensor 11 , and the front end of the inner rod 3 is fixedly connected with the rear end of the motor fixing seat 12 , the motor A plunging motor 13 is fixed in the fixing base 12, and a power output shaft of the plunging motor 13 is fixedly coupled to a rotating head 14 mounted on the motor fixing base 12, and the rotating head 14 is fixed. Solid spot with laser pointer 15 and the first top wire 16, the wire 16 is positioned on top of the first recess 17 of the photosensor 11 corresponds to the circumference. So, after the wheel balancer completes the measurement, the system calculates the position of the current wheel imbalance point, that is, the distance between the unbalanced point and the piezoelectric sensor, and the angle between the unbalanced point and the zero degree of the wheel balancer shaft, the system According to the angle of the unbalanced point, the motor signal is input, so that the angle of the rotating head is corresponding to the angle of the unbalanced point of the wheel, so that the laser projection point coincides with the unbalanced point. If the position of the current unbalanced point is not convenient for the user to stick the lead block, the wheel can be rotated, and the system will return to the position of the wheel unbalance point in real time, and at the same time give the motor signal so that the laser point can track the unbalanced point of the wheel, and the user finds convenience. Paste the lead block to complete the operation of pasting the lead block.

The rotating head is rotated by the twisting motor. The zero angle of the rotating head refers to the angle of the spot laser pointer when the first top wire on the rotating head just passes the photoelectric sensor, and the angle of the system returning to the unbalanced point of the wheel, according to The geometric relationship in Figure 6 and Figure 8 calculates the angle at which the rotating head should rotate. The system sends a corresponding signal to the motor (where: R is the wheel radius obtained when measuring the electronic ruler; u is measured by the electronic ruler The angle of the unbalance point; H is the distance between the center line of the inner rod and the center axis of the wheel), and the rotation angle of the rotary head can be obtained from these known quantities. The spot laser pointer in this embodiment is controlled by Senxun Made by Electronic Technology Co., Ltd., model GLP301; Haojin Motor is manufactured by Beijing Ruiyabao Technology Development Co., Ltd., model number is 20BY20H01; photoelectric sensor is manufactured by Nanping Xuguang Electronic Technology Co., Ltd., model is ST150; linear resistance is from Jihua High-tech Manufactured by Technology Co., Ltd., model number LR300-102.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 2: The present embodiment is described with reference to FIG. 1 and FIG. 4 . The carbon brush assembly 7 of the present embodiment is composed of a carbon brush sleeve 18 and a carbon brush 19; the carbon brush sleeve 18 and the rear end surface of the inner rod 3 are fixed. Connected, the carbon brush cover 18 is provided with a carbon brush 19. Its structure is simple and easy to install. Other components and connection relationships are the same as in the first embodiment.

Embodiment 3: The present embodiment is described with reference to FIG. 1. The potentiometer assembly 10 of the present embodiment is composed of a potentiometer 20, a potentiometer bushing 21, a potentiometer fixing plate 22, a second top wire 23, and a pin shaft 24; The potentiometer bushing 21 is connected to the potentiometer 20 via a second top wire 23, the potentiometer 20 is fixed on the potentiometer fixing plate 22, and the lower end of the rotating shaft 8 is mounted on the groove of the potentiometer bushing 21. The inside of the 25 is fixed to the potentiometer bushing 21 by the pin 24 . The setting is such that the potentiometer sleeve 21 rotates on its own axis to drive the potentiometer 20 to rotate. The potentiometer in this embodiment is manufactured by Taiwan Donggao Company and is model number RV24YN20S. Other compositions and connection relationships are the same as in the first embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 4: This embodiment is described in conjunction with FIG. 1 and the present embodiment and implementation are described. The difference of the first method is: The embodiment further adds a cross-line type laser tube 26; the cross-line type laser tube 26 is fixed on the inner wall of the outer rod 2. With this arrangement, the cross-hair laser tube 26 can emit horizontal and vertical cross laser lines. When the wheel balancing machine needs to use the "one-two-division" function, the positioning of the wheel spokes will be stuck between the two spokes. The lead block is "divided into two" and is attached to the rear of the adjacent two wheel spokes to achieve the purpose of concealing the lead. When the wheel balancing machine uses this function, the laser line from the cross-hair laser tube can help locate the wheel spokes. When the lead block is required at the position of 12 o'clock (in the corresponding position of the clock pointer analog wheel), it can also be positioned by means of this laser line. The cross-line type laser tube in the present embodiment is manufactured by Zhongshan Nuweisi Optoelectronic Technology Co., Ltd., and the model number is L005.

The electronic ruler of the present invention comprises two movement modes, one is longitudinal stretching; and the other is rotating around the outer shaft. The inner rod can be freely pulled in the outer rod, and the outer rod is equipped with a linear resistance. When the inner rod slides in the outer rod, the linear resistance outputs a corresponding electric signal, and the position of the inner rod can be obtained therefrom. By rotating the rotary shaft, the potentiometer is rotated, and the potentiometer outputs a corresponding electrical signal, and the angle at which the electronic scale rotates can be obtained. When the measurement is made, the electronic slider can be pulled out and rotated to the measured point. At this time, the measured stretching distance and the angle of rotation and the positional relationship between the electronic ruler and the wheel rim can be calculated. The diameter of the wheel rim at the place.

When measuring the diameter of the wheel rim with an electronic ruler, the ruler is placed at a certain point where the diameter needs to be measured. At this time, the variables L, α and constant can be obtained according to the electric resistance of the linear resistance and the potentiometer output and the mounting position of the electronic ruler. For the value of H, see Figure 6 and Figure 8 (where: L is the distance between the axis of the rotating shaft and the tip of the ruler; α is the inner rod swinging from the initial position with the axis of rotation as the axis to the measuring point of the wheel rim Angle; Η is the distance between the centerline of the inner rod and the center axis of the wheel. The geometrical relationship can be used to calculate the value of the wheel rim diameter and the corresponding Α+ value (the dynamic balance machine piezoelectric sensor to this point) distance).

Claims

& m M 3⁄4 3⁄4

1. A laser tracking and positioning wheel dynamic balancing machine electronic measuring ruler, which comprises a ruler head (1), an outer rod

(2) , inner rod (3), bracket (4), linear resistance (5), slide rail (6), carbon brush assembly (7), rotating shaft (8), bushing (9), potentiometer total The sleeve (9) is sleeved on the rotating shaft (8), and the sleeve (9) is fixed on the bracket (4), the upper end of the rotating shaft (8) and the outer rod:) The lower end of the rotating shaft (8) is fixedly connected to the potentiometer assembly (10), and the inner wall of the outer rod (2) is provided with a sliding rail (6), and the inner wall of the outer rod (2) is fixed. a linear resistor is mounted, the rear end of the inner rod is mounted on the slide rail and fixed to the carbon brush assembly (7) mounted in the inner cavity of the outer rod; and characterized in that it further comprises a photoelectric sensor (11); The ruler (1) is composed of a motor mount (12), a motor (13), a rotary head (14), a spot laser pointer (15), and a first top wire (16;); (3;) The photoelectric sensor (:11:) is fixed on the outer wall of the front end, and the inner rod

The front end of the (3) is fixed to the rear end of the motor fixing seat (12), and the motor fixing seat (12) is fixed with a driving motor (13), and the power output shaft of the driving motor (13) is a rotary head (14) mounted on the motor mount (12) is fixed, and the rotary head (14) is fixed with a spot laser pointer (15) and a first top wire (16), A top wire (16) is located on the circumference of the recess (17) of the photosensor (11).

2. The laser track positioning positioning wheel dynamic balancer electronic ruler according to claim 1, wherein the carbon brush assembly (7) is composed of a carbon brush sleeve (18) and a carbon brush (19); The brush sleeve (18) is fixed to the rear end surface of the inner rod (3), and the carbon brush sleeve (18) is provided with a carbon brush (19).

3. The laser tracker positioning wheel dynamic balancer electronic ruler according to claim 1, wherein the potentiometer assembly (10) is fixed by a potentiometer (20), a potentiometer bushing (21), and a potentiometer. The plate (22), the second top wire (23), and the pin shaft (24); the potentiometer bushing (21) is connected to the potentiometer (20) through the second top wire (23), the potentiometer ( 20) fixed on the potentiometer fixing plate (22), the lower end of the rotating shaft (8) is installed in the groove (25) of the potentiometer bushing (21) and passes through the pin shaft (24) and the potentiometer bushing (21) Fixed.

4. The laser tracking positioning wheel dynamic balancing machine electronic shank according to claim 1, further comprising a cross-line type laser tube (26); said cross-line type laser tube (26) being fixed on the outer rod ( 2;) on the inner wall.