Automatic verification equipment for metering error

Abstract

The utility model provides automatic calibration equipment for metering errors, which relates to the technical field of mechanical balances, and comprises a base, a metering balance assembly is arranged at a position, close to the rear side, of the top of the base, a calibration assembly is arranged at a position, close to the front side, of the top of the base, and the metering balance assembly comprises a first support. According to the utility model, the laser emitter and the laser receiver at the initial position are matched to detect whether the metering table is horizontal in the initial state, and the electric push rod and the U-shaped frame are matched to detect the lowest height of the metering table after the metering table is inclined in the initial state. At the moment, errors occurring during metering of the metering table can be detected through cooperation of the distance measuring instrument and the reflecting plate, the overall structure is simple, the metering errors of the metering balance can be automatically detected, and errors of the weight of a metered object can be avoided after calibration and maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical balance technical field especially, a kind of automatic verification equipment for measurement error. BACKGROUND

[0002] Mechanical balance commonly known as balance is one of common weighing apparatus, is formed by two arms with pivot in the center of beam supporting balance beam, each arm hangs a disc, one disc is placed with known mass object, another disc is placed with measured object, the mass of measured object can be measured, is common measuring device.

[0003] In prior art, such as Chinese patent publication No. CN221147812U, a kind of easy assembly's mechanical balance for measurement verification, including balance body, the top of balance body is provided with connecting arm, and connecting arm is provided with two groups, the top of two groups of connecting arms is provided with tray body, the bottom of tray body is fixedly connected with protruding block and extension block, and protruding block is provided with two groups, the other end of connecting arm is fixedly connected with placing box, the side of balance body is rotatably connected with second knob, and second knob is provided with two groups. The utility model is through the setting of first knob, clamping block, limit slot and positive and negative thread rod, realizes the more stable fixation effect of tray body, at the same time, the assembly is facilitated, solves the problem that the tray of existing mechanical balance is mostly placed on the outside of connecting arm, which is prone to accidental contact with the balance and causes the tray to fall, affecting the use efficiency.

[0004] Although the above-mentioned patent solves the problem of tray falling easily, but the measurement balance in long-term use, the rotating measurement table is knocked and worn, which can not keep the initial state horizontal, and the slightly inclined measurement table is difficult to be observed by naked eye, so as to cause the error of measured object weight, therefore, in view of the above problems, a new type of automatic verification equipment for measurement error is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problem that the measurement balance in prior art can not keep the initial state horizontal after long-term use, and the slightly inclined measurement table is difficult to be observed by naked eye, so as to cause the error of measured object weight, and proposes a kind of automatic verification equipment for measurement error.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of automatic verification equipment for metrological error, including base, the base top position close to rear side is provided with metrological balance assembly, the base top position close to front side is provided with verification assembly, the metrological balance assembly includes first support, the verification assembly includes electric push rod and two second supports, two The second support is fixedly connected at the edge of base top close to front side, and the top of electric push rod is fixedly connected with U-shaped frame, the U-shaped frame is slidably connected between the opposite side outer surfaces of two second supports, the opposite side outer surfaces of U-shaped frame close to top position are all fixedly connected with reflector, the position close to top of left side inner surface wall of U-shaped frame is embedded with laser emitter, and the position close to top of right side inner surface wall of U-shaped frame is embedded with laser receiver.

[0007] Preferably, the first support is fixedly connected at the edge of base top close to rear side, the top of first support is fixedly connected with dial, and the front surface center of dial is rotatably connected with rotating block.

[0008] Preferably, the position close to top of outer surface of rotating block is fixedly connected with pointer, and the front surface of rotating block is fixedly connected with measuring table.

[0009] Preferably, the height of laser emitter, laser receiver and measuring table bottom corresponds, and the position close to top of opposite side outer surfaces of two second supports is fixedly installed with range finder.

[0010] Preferably, sliding groove is formed in the outer surface of second support, the outer surface of reflector and the inner surface wall of sliding groove are slidably attached, and the emitting end of range finder corresponds with the top of reflector.

[0011] Preferably, the position close to front surface of top of base is fixedly connected with limiting post symmetrically, and the outer surface of limiting post is slidably penetrated through the outer surface of U-shaped frame.

[0012] Preferably, the bottom of measuring table is fixedly connected with mounting seat, the inner surface wall between both sides of mounting seat is rotatably connected with lead screw, the outer surface of one side of mounting seat is rotatably connected with knob, the knob and one end of lead screw are fixedly connected through shaft, the inner top of mounting seat is slidably connected with counterweight, and the outer surface of lead screw is threadedly penetrated through the outer surface of counterweight.

[0013] Compared with prior art, the utility model has the advantages and positive effects that:

[0014] 1. The utility model discloses a laser emitter and laser receiver cooperate to determine whether the initial state of the measuring platform is horizontal, and the minimum height after the initial state of the measuring platform is tilted is determined through the cooperation of the laser emitter and laser receiver, and the error of the measuring platform during measurement is determined through the cooperation of the range finder and the reflecting plate.

[0015] 2. When the measuring platform determines the deviation state, the horizontal state of the measuring platform is calibrated through the cooperation of the knob, screw rod and counterweight, and the measurement error is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A perspective view of the automatic verification equipment for measurement error is provided for the utility model;

[0017] Figure 2 An expanded view of the measuring platform assembly of the automatic verification equipment for measurement error is provided for the utility model;

[0018] Figure 3 A perspective view of the verification assembly of the automatic verification equipment for measurement error is provided for the utility model;

[0019] Figure 4 An expanded view of the verification assembly of the automatic verification equipment for measurement error is provided for the utility model.

[0020] Legend: 1, base; 11, limiting column; 2, measuring platform assembly; 201, first support; 202, dial; 203, rotating block; 204, pointer; 205, measuring platform; 206, mounting seat; 207, screw rod; 208, counterweight; 209, knob; 3, verification assembly; 301, second support; 302, U-shaped frame; 303, reflecting plate; 304, range finder; 305, laser emitter; 306, laser receiver; 307, electric push rod; 308, sliding groove. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purpose, features and advantages of the utility model more clearly understood, the utility model is further described below in combination with the drawings and examples. It should be noted that the examples and features in the examples of the present application can be combined with each other without conflict.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figures 1-4 As shown, this utility model provides an automatic verification device for measurement errors, including a base 1. A measuring balance assembly 2 is disposed on the top of the base 1 near the rear side, and a verification assembly 3 is disposed on the top of the base 1 near the front side. The measuring balance assembly 2 includes a first support 201, and the verification assembly 3 includes an electric push rod 307 and two second supports 301. The two second supports 301 are symmetrically fixedly connected to the edge of the top of the base 1 near the front side. A U-shaped frame 302 is fixedly connected to the top of the electric push rod 307. The U-shaped frame 302 is slidably connected between the opposite outer surfaces of the two second supports 301. A reflector 303 is fixedly connected to the opposite outer surfaces of the U-shaped frame 302 near the top. A laser emitter 305 is embedded in the inner wall of the left side of the U-shaped frame 302 near the top. A laser emitter 305 is embedded in the inner wall of the right side of the U-shaped frame 302. A laser receiver 306 is embedded near the top. A first bracket 201 is fixedly connected to the top of the base 1 near the rear edge. A scale 202 is fixedly connected to the top of the first bracket 201. A rotating block 203 is rotatably connected to the center of the front surface of the scale 202. A pointer 204 is fixedly connected to the outer surface of the rotating block 203 near the top. A measuring platform 205 is fixedly connected to the front surface of the rotating block 203. The heights of the bottom of the laser emitter 305, the laser receiver 306, and the measuring platform 205 correspond. A rangefinder 304 is fixedly installed on the outer surface of the two second brackets 301 on opposite sides near the top. A sliding groove 308 is opened on the outer surface of the second bracket 301. The outer surface of the reflector 303 and the inner wall of the sliding groove 308 slide in contact. The emitting end of the rangefinder 304 corresponds to the top of the reflector 303.

[0024] The effect achieved by the whole embodiment 1 is that when in use, after the metering table 205 is in a stationary horizontal state, the laser emitter 305 on the base 1 is started by the controller to emit a light beam to the laser receiver 306, the emitted light beam will pass horizontally from the bottom of the metering table 205 in the horizontal state and be received by the laser receiver 306, and then the microprocessor on the base 1 will control the laser emitter 305 to be turned off. When the metering table 205 loses balance due to wear and tear, impact, etc., it will be in a parallel state, at this time the light beam emitted by the laser emitter 305 will be blocked, thereby causing the laser receiver 306 to be unable to receive the light signal, at this time the microcontroller will start the electric push rod 307 to retract and drive the U-shaped frame 302 to gradually descend, thereby causing the laser emitter 305 to follow the descent, until the light beam is not blocked, at this time the microcontroller controls the range finder 304 to emit a light beam to irradiate on the reflecting plate 303 and receives the reflected light signal, thereby detecting the height difference between the lowest point of the metering table 205 after tilting and the initial lowest point, and detecting the error of the metering table 205 during metering. The overall structure is simple, can automatically detect the metering error of the metering balance, and can avoid the error of the measured object weight after calibration and maintenance. At this time, the measured object is placed in the tray on one side of the metering table 205, and the weight is added to the other tray to make the metering table 205 in a horizontal state, and when the pointer 204 points to the middle scale of the scale disc 202, the object weight can be measured.

[0025] Embodiment 2: as shown in Figures 1-4 The top of the base 1 is symmetrically fixed and connected with a limiting column 11 near the front surface, the outer surface of the limiting column 11 slides through the outer surface of the U-shaped frame 302, the bottom of the metering table 205 is fixedly connected with a mounting seat 206, a lead screw 207 is rotatably connected between the inner surface walls of the mounting seat 206 on both sides, a knob 209 is rotatably connected to the outer surface of one side of the mounting seat 206, the knob 209 and one end of the lead screw 207 are fixedly connected through a shaft, a counterweight 208 is slidably connected to the inner top of the mounting seat 206, and the outer surface of the lead screw 207 is threaded through the outer surface of the counterweight 208.

[0026] The effect achieved by the whole embodiment 2 is that when the metering table 205 detects the deviation state, the weight block 208 can be moved in the middle position of the bottom of the metering table 205 to change the weight of the metering table 205 by rotating the lead screw 207 through the rotation of the knob 209 under the characteristics of the thread, and after the metering table 205 returns to the horizontal state, the laser emitter 305 and the laser receiver 306 can be moved to the highest initial position by the electric push rod 307 to push the U-shaped frame 302 to re-detect the horizontal state of the metering table 205, which is simple in structure, can effectively calibrate the metering table 205, has high practicability, and after the metering table 205 is adjusted to the horizontal state, the reset laser receiver 306 still cannot successfully receive the light signal emitted by the laser emitter 305, which can be judged as that the metering table 205 is bent and needs to be replaced, further improving the functional effect of the detection assembly 3.

[0027] Working principle: when in use, after the metering table 205 is in the static horizontal state, the controller on the base 1 starts the laser emitter 305 to emit a light beam to the laser receiver 306, the emitted light beam passes through the bottom of the metering table 205 in the horizontal state and is received by the laser receiver 306, and then the microprocessor on the base 1 controls the laser emitter 305 to be turned off, when the metering table 205 loses balance due to wear and impact, the light beam emitted by the laser emitter 305 will be blocked, so that the laser receiver 306 cannot receive the light signal, at this time, the microcontroller starts the electric push rod 307 to retract to gradually lower the U-shaped frame 302, so that the laser emitter 305 follows the lowering, until the light beam is not blocked, at this time, the microcontroller controls the range finder 304 to emit a light beam to the reflecting plate 303 and receives the reflected light signal, so as to detect the height difference between the lowest point of the metering table 205 after tilting and the initial lowest point, to detect the error of the metering table 205 during metering, the whole structure is simple, can automatically detect the metering error of the metering balance, after calibration and maintenance, the error of the measured object weight can be avoided, and when the metering table 205 detects the deviation state, the weight block 208 can be moved in the middle position of the bottom of the metering table 205 to change the weight of the metering table 205 by rotating the lead screw 207 through the rotation of the knob 209 under the characteristics of the thread, and after the metering table 205 returns to the horizontal state, the laser emitter 305 and the laser receiver 306 can be moved to the highest initial position by the electric push rod 307 to push the U-shaped frame 302 to re-detect the horizontal state of the metering table 205, which is simple in structure, can effectively calibrate the metering table 205, has high practicability, and after the metering table 205 is adjusted to the horizontal state, the reset laser receiver 306 still cannot successfully receive the light signal emitted by the laser emitter 305, which can be judged as that the metering table 205 is bent and needs to be replaced, further improving the functional effect of the detection assembly 3.

[0028] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. Automatic verification apparatus for the metrological error, comprising a base (1), characterized in that: The metering balance assembly (2) is arranged at the top of the base (1) near the rear side, and the verification assembly (3) is arranged at the top of the base (1) near the front side; The metering balance assembly (2) comprises a first support (201); The verification assembly (3) comprises an electric push rod (307) and two second supports (301), the two second supports (301) are symmetrically fixedly connected at the edge of the top of the base (1) near the front side, the top of the electric push rod (307) is fixedly connected with a U-shaped frame (302), the U-shaped frame (302) is slidingly connected between the opposite side outer surfaces of the two second supports (301), the opposite side outer surfaces of the U-shaped frame (302) are fixedly connected with reflecting plates (303) near the top, a laser emitter (305) is embedded on the left inner surface wall of the U-shaped frame (302) near the top, and a laser receiver (306) is embedded on the right inner surface wall of the U-shaped frame (302) near the top.

2. Automatic testing apparatus for the metrological error according to claim 1, characterized in that: The first support (201) is fixedly connected at the edge of the top of the base (1) near the rear side, the top of the first support (201) is fixedly connected with a scale disc (202), and the scale disc (202) is rotationally connected with a rotating block (203) at the center of the front surface.

3. Automatic testing apparatus for the metrological error according to claim 2, characterized in that: A pointer (204) is fixedly connected to the outer surface of the rotating block (203) near the top, and a metering table (205) is fixedly connected to the front surface of the rotating block (203).

4. Automatic testing apparatus for the metrological error according to claim 3, characterized in that: The heights of the laser emitter (305), the laser receiver (306) and the bottom of the metering table (205) correspond to each other, and a range finder (304) is fixedly installed on the opposite side outer surfaces of the two second supports (301) near the top.

5. Automatic testing apparatus for the metrological error according to claim 4, characterized in that: A sliding groove (308) is formed in the outer surface of the second support (301), the outer surface of the reflecting plate (303) and the inner surface wall of the sliding groove (308) are slidingly attached, and the emitting end of the range finder (304) corresponds to the top of the reflecting plate (303).

6. Automatic testing apparatus for the metrological error according to claim 5, characterized in that: Limiting columns (11) are symmetrically fixedly connected to the top of the base (1) near the front surface, and the outer surfaces of the limiting columns (11) slidingly penetrate the outer surface of the U-shaped frame (302).

7. Automatic testing apparatus for the metrological error according to claim 6, characterized in that: A mounting seat (206) is fixedly connected to the bottom of the metering table (205), a lead screw (207) is rotationally connected between the inner surface walls of the two sides of the mounting seat (206), a knob (209) is rotationally connected to the outer surface of one side of the mounting seat (206), the knob (209) and one end of the lead screw (207) are fixedly connected through a shaft, a counterweight (208) is slidingly connected to the inner top of the mounting seat (206), and the outer surface of the lead screw (207) is threadedly penetrated through the outer surface of the counterweight (208).

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