CN112504424A

CN112504424A - Automatic calibrating installation of electronic scale

Info

Publication number: CN112504424A
Application number: CN202011488661.5A
Authority: CN
Inventors: 李海洋; 孙立军; 姚新红; 李雪菁; 张进明; 沈琼; 宋进; 朱碧玉; 陈宇阳
Original assignee: Shanghai Institute of Measurement and Testing Technology
Current assignee: Shanghai Institute of Measurement and Testing Technology
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-03-16

Abstract

The invention relates to the technical field of electronic scale verification devices, and discloses an automatic electronic scale verification device which comprises a guide rail support frame and a weighing support frame, wherein the weighing support frame is a rectangular frame, the guide rail support frame penetrates through the inside of the weighing support frame, an electronic scale is also arranged at the bottom of the weighing support frame, a guide rail is arranged at the top of the guide rail support frame, a sliding block is connected to the outer wall of the guide rail in a sliding manner, a moving flat plate is fixedly arranged at the top of the sliding block, an upper layer weight and a lower layer weight are arranged above the moving flat plate, an electric push rod is adopted to control the lifting of the upper layer weight and the lower layer weight, the position control precision is higher, the control is also more convenient, the upper layer weight and the lower layer weight are arranged in four groups, the total mass of the four groups of the upper layer weight and, all can be controlled independently, according to the examination needs, can freely load or unload the weight.

Description

Automatic calibrating installation of electronic scale

Technical Field

The invention relates to the technical field of electronic scale calibrating devices, in particular to an automatic calibrating device for an electronic scale.

Background

With the development of social economy and the increasing frequency of economic trade activities, people also put higher requirements on the precision and the reliability of the weighing and metering tool. The electronic scales in commercial activities have high popularity, the technical requirements on the electronic scales are higher and higher, and the electronic scales are required to have high accuracy and high running speed. In order to ensure the accuracy of the electronic scale, the electronic scale needs to be checked frequently so as to ensure the metering accuracy.

However, the calibration of the electronic scale in the prior art is still mainly performed manually, and has the disadvantages of backward detection method, low detection efficiency, high working strength, easy influence of human factors on detection precision and the like, and needs to be improved.

The Chinese patent publication number is: the invention patent of CN101846546B discloses a field automatic calibration device for mobile electronic scales, in which the support is supported by four support columns vertically arranged on the mobile cart, and the top end of each support column is fixedly arranged on a right angle of the rectangular support; open on the support and have a plurality of through-holes, the external diameter of cylinder and the internal diameter phase-match of through-hole and fixed the setting in the through-hole down, the piston in the cylinder is connected with the one end that sets up the couple outside the cylinder, and the weight is connected to the other end of couple. The air inlet ends of all the air cylinders are connected with the air outlets of the air source electromagnetic directional valves, and the air inlets of the air source electromagnetic directional valves are connected with the air pump. And the control end of the air source electromagnetic directional valve is connected with the programmable logic controller. The programmable logic controller is connected with the computer through a serial port. The switch power supply supplies power for the programmable logic controller and the air source electromagnetic directional valve.

Although the above patent can also verify the electronic scale, the problems of low detection precision and the like still exist, the structures such as the electromagnetic directional valve, the air pump, the programmable logic controller and the like are not only high in cost, but also easy to generate logic errors, and the practicability is not enough, and meanwhile, the above patent can only verify the small electronic scale, and the electronic scale with a large size, such as more than 500kg, can not be effectively verified, and the application range is not wide enough.

Based on this, we propose an automatic calibrating device for electronic scale, which hopefully solves the disadvantages in the prior art.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the automatic calibrating device for the electronic scale, which has the advantages of simple structure, low cost, convenience in weight loading and weight unloading and high detection precision.

(II) technical scheme

In order to realize the purposes of simple structure, low cost, convenient weight loading and weight unloading and high detection precision, the invention provides the following technical scheme: an automatic calibrating device for an electronic scale comprises a guide rail support frame and a weighing support frame, wherein the weighing support frame is a rectangular frame, the guide rail support frame penetrates through the inside of the weighing support frame, and the bottom of the weighing support frame is also provided with the electronic scale;

the top of the guide rail support frame is provided with a guide rail, the outer wall of the guide rail is connected with a sliding block in a sliding manner, the top of the sliding block is fixedly provided with a movable flat plate, the bottom of the movable flat plate is fixedly provided with an electric push rod, the top of an output shaft of the electric push rod is fixedly connected with a connecting piece, the top of the connecting piece is fixedly provided with a connecting shaft, and the top of the connecting shaft is fixedly provided with a weight tray;

the utility model discloses a weighing support frame, including the support frame that weighs, the interior roof fixed mounting of support frame has a lift kits, the movable groove has been seted up to lift kits's inside, the inside in movable groove is provided with about piece, the bottom fixedly connected with of about piece hangs the jib, the end that hangs the jib extends to lift kits's outside.

As a preferable technical scheme of the invention, a guide shaft is inserted into the weight tray and fixedly connected to the top of the movable flat plate.

As a preferred technical scheme of the invention, two sides of the bottom of the guide rail supporting frame are provided with supporting legs, and the supporting legs and the electronic scale are positioned on the same plane.

The hanging device comprises a hanging rod, a hanging groove and a limiting plate, wherein the hanging rod is fixedly arranged on the inner wall of the mounting hole, the side face of the upper layer of the weight is provided with the hanging groove, the inner wall of the hanging groove is clamped with the limiting plate, the bottom of the limiting plate is fixedly connected with an upright post, and the bottom of the upright post is fixedly connected with a mounting block.

As a preferable technical scheme of the invention, the top of the lower layer weight is provided with a first fixing hole, the mounting block is fixedly connected to the first fixing hole, and the side surface of the lower layer weight is also provided with a suspension groove.

As a preferred technical scheme of the invention, the electric push rod, the weight tray, the suspension bracket and the devices thereof are provided with four groups, each group of devices comprises an upper layer weight and nine lower layer weights, and the adjacent upper layer weight and the lower layer weight as well as the lower layer weight and the lower layer weight are connected through the suspension grooves and the limiting plates.

As a preferable technical scheme of the invention, the total weight of the upper layer weight and the lower layer weight is the same as the maximum weighing value of the electronic scale.

As a preferred technical scheme of the invention, the top of the lower layer weight is further provided with a second fixing hole, the top of the second fixing hole is fixedly provided with a support column, the top of the support column is hemispherical, and the bottoms of the upper layer weight and the lower layer weight are provided with positioning holes matched with the tops of the support columns.

As a preferable technical scheme of the invention, the suspension groove comprises a limiting groove and a column groove, the height of the limiting groove is greater than the thickness of the limiting plate, and the length of the column groove is less than that of the upright column.

(III) advantageous effects

Compared with the prior art, the invention provides an automatic calibrating device for an electronic scale, which has the following beneficial effects:

1. this automatic calibrating installation of electronic scale adopts electric putter to control upper layer weight and lower floor weight and goes up and down, and the position control precision is higher, and it is also more convenient to control.

2. This automatic calibrating installation of electronic scale, upper strata weight and lower floor's weight set up four groups altogether, and the gross mass of four groups upper strata weights and lower floor's weight is the same with the biggest weighing value of being examined electronic scale, sets up an upper strata weight and nine lower floor's weights in every group, all can independently control, according to examination needs, can freely load or uninstall the weight.

3. This automatic calibrating installation of electronic scale, support column and locating hole are mutually supported, have the effect of self-centering, are convenient for guarantee the vertical position of weight, avoid the scraping and the contact of weight loading, uninstallation state.

4. This automatic calibrating installation of electronic scale, upper layer weight and lower floor's weight are placed on removing the flat board, remove dull and stereotyped bottom and have the slider, can the horizontal slip on the guide rail, and the dismantlement and the installation of the weight of being convenient for facilitate for daily inspection of weight, examination.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1 according to the present invention;

FIG. 3 is a partial cross-sectional view of a suspension bracket according to the present invention;

FIG. 4 is a schematic view of a portion of an upper weight of the present invention;

FIG. 5 is a schematic view of a portion of a limiting plate of the present invention;

FIG. 6 is a partial schematic view of the lower layer of the weight of the present invention;

FIG. 7 is a schematic view of a portion of a support post according to the present invention.

In the figure: 1-guide rail support frame, 2-guide rail, 3-slide block, 4-movable flat plate, 5-electric push rod, 6-connecting piece, 7-connecting shaft, 8-weight tray, 9-guide shaft, 10-weighing support frame, 11-electronic scale, 12-suspension support frame, 13-movable groove, 14-constraint block, 15-suspension rod, 16-mounting hole, 17-upper-layer weight, 18-suspension groove, 19-limiting plate, 20-upright column, 21-mounting block, 22-first fixing hole, 23-lower-layer weight, 24-second fixing hole and 25-supporting column.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-7, an automatic calibrating apparatus for an electronic scale includes a guide rail support frame 1 and a weighing support frame 10, wherein the weighing support frame 10 is a rectangular frame, the guide rail support frame 1 passes through the inside of the weighing support frame 10, and an electronic scale 11 is further disposed at the bottom of the weighing support frame 10;

the top of the guide rail support frame 1 is provided with a guide rail 2, the outer wall of the guide rail 2 is connected with a sliding block 3 in a sliding manner, the top of the sliding block 3 is fixedly provided with a movable flat plate 4, the bottom of the movable flat plate 4 is fixedly provided with an electric push rod 5, the top of an output shaft of the electric push rod 5 is fixedly connected with a connecting piece 6, the top of the connecting piece 6 is fixedly provided with a connecting shaft 7, and the top of the connecting shaft 7 is fixedly provided with;

the inner top wall of the weighing support frame 10 is fixedly provided with a suspension support 12, a movable groove 13 is formed in the suspension support 12, a restraint block 14 is arranged in the movable groove 13, the bottom of the restraint block 14 is fixedly connected with a suspension suspender 15, and the tail end of the suspension suspender 15 extends to the outside of the suspension support 12.

In this embodiment, the inside of weight tray 8 has still pegged graft and has guided axle 9, and guided axle 9 fixed connection is at the top of removing dull and stereotyped 4, and the grafting of guided axle 9 in weight tray 8 can make the up-and-down motion of weight tray 8 more steady, can not control askew.

In this embodiment, the two sides of the bottom of the guide rail supporting frame 1 are provided with supporting legs, and the supporting legs and the electronic scale 11 are located on the same plane and are convenient to place on the ground.

In this embodiment, still include upper strata weight 17 and lower floor's weight 23, mounting hole 16 has been seted up in upper strata weight 17's center department, hangs the bottom fixed mounting of jib 15 on the inner wall of mounting hole 16, and the side of upper strata weight 17 has been seted up and has been hung groove 18, and the inner wall joint that hangs groove 18 has limiting plate 19, limiting plate 19's bottom fixedly connected with stand 20, stand 20's bottom fixedly connected with installation piece 21.

In this embodiment, the top of the lower layer weight 23 is provided with a first fixing hole 22, the mounting block 21 is fixedly connected to the first fixing hole 22, and the side surface of the lower layer weight 23 is also provided with a suspension groove 18.

In this embodiment, four sets of the electric push rod 5, the weight tray 8, the suspension bracket 12 and the devices belonging to the same are provided, each set of the devices comprises an upper layer weight 17 and nine lower layer weights 23, the adjacent upper layer weight 17 and lower layer weight 23, and the lower layer weight 23 and lower layer weight 23 are connected through the suspension groove 18 and the limiting plate 19, after the verification starts, the output shaft of the electric push rod 5 retracts downwards, after reaching the set stroke, the suspension hanger 15 contacts with the inner bottom wall of the movable groove 13, the topmost upper layer weight 17 is firstly suspended on the suspension bracket 12, at this time, the mass of the upper layer weight 17 directly acts on the electronic scale 11 through the weighing support frame 10, the electronic scale 11 is loaded with one weight, the output shaft of the electric push rod 5 continues to retract downwards, after reaching the set stroke, the limiting plate 19 of the topmost lower layer weight 23 contacts with the inner bottom wall of the suspension groove 18 on the side surface of the upper layer, the weight is hung below the upper-layer weight 17, the mass of the weight is directly acted on the electronic scale 11 through the weighing support frame 10, two weights are loaded on the electronic scale 11, the rest eight lower-layer weights 23 can be gradually loaded on the electronic scale 11 by analogy, and the process of unloading the weights is opposite to the loading process.

In this embodiment, the total weight of the upper layer weight 17 and the lower layer weight 23 is the same as the maximum weighing value of the electronic scale 11, so that the electronic scale 11 can be conveniently calibrated, and the calibration precision is higher.

In this embodiment, second fixed orifices 24 has still been seted up at the top of lower floor's weight 23, and the top fixed mounting of second fixed orifices 24 has support column 25, and the top of support column 25 is the hemisphere, and the top assorted locating hole with support column 25 has been seted up to the bottom of upper strata weight 17 and lower floor's weight 23, and support column 25 and locating hole mutually support, have the effect from the alignment, are convenient for guarantee the vertical position of weight, avoid the scraping and the contact of weight loading, uninstallation state.

In this embodiment, hang groove 18 and include spacing groove and post groove, and the height in spacing groove is greater than the thickness of limiting plate 19, and the length in post groove is less than the length of stand 20 for limiting plate 19 and stand 20 can be in hanging the activity of being the certain limit in the groove 18, and wherein, when the unsettled activity that is located of limiting plate 19 hangs the groove 18, the weight is in the uninstallation state, and when limiting plate 19 contacted with the inner bottom wall that hangs the groove 18, the weight was in the loading state.

In this embodiment, the hanging bracket 12 is connected with the inner top wall of the weighing support frame 10 through bolts, so that the hanging bracket is convenient to detach.

In this embodiment, install photoelectric encoder on electric putter 5, be convenient for detect the extension length of electric putter 5 output shaft, control more accurately.

The working principle and the using process of the invention are as follows:

before the verification starts, the output shaft of the electric push rod 5 extends upwards completely to jack up an upper-layer weight 17 and nine lower-layer weights 23 completely, the suspension hanger rod 15 is separated from the inner bottom wall of the movable groove 13, the weights of all the weights are completely born by the weight tray 8 and the electric push rod 5, and the electronic scale 11 is in a completely unloaded state;

after the verification is started, the output shaft of the electric push rod 5 retracts downwards, after the output shaft reaches a set stroke, the suspension hanger rod 15 is contacted with the inner bottom wall of the movable groove 13, the top-most upper-layer weight 17 is firstly suspended on the suspension bracket 12, the mass of the upper-layer weight 17 is directly acted on the electronic scale 11 through the weighing support frame 10, and the electronic scale 11 is loaded with a piece of weight;

the output shaft of the electric push rod 5 continuously retracts downwards, after the output shaft reaches a set stroke, the limiting plate 19 of the topmost lower-layer weight 23 is contacted with the inner bottom wall of the suspension groove 18 on the side surface of the upper-layer weight 17, the weight is suspended below the upper-layer weight 17, the mass of the weight is directly acted on the electronic scale 11 through the weighing support frame 10, two weights are loaded on the electronic scale 11, and the rest eight lower-layer weights 23 can be gradually loaded on the electronic scale 11 by analogy;

the process of unloading the weights is opposite to the loading process, the output shaft of the electric push rod 5 extends upwards, after the weight tray 8 reaches a set stroke, the weight tray 8 is firstly contacted with the bottommost one of the lower-layer weights 23, the limiting plate 19 at the top of the weight is separated from the suspension groove 18 on the side face of the weight above the limiting plate, the weight of the bottommost lower-layer weight 23 is borne by the weight tray 8 and the electric push rod 5, the electronic scale 11 unloads one weight, and the like, nine lower-layer weights 23 and one upper-layer weight 17 can be gradually unloaded from the electronic scale 11, each electric push rod 5 controls one group of weights, each group of weights can independently and automatically lift according to verification requirements, and the loading and unloading of the weights are completed;

after the examination is accomplished, if do not examine and determine the work in the longer time, can dismantle suspension bracket 12, suspension bracket 12 will no longer receive the restraint of support frame 10 that weighs, this moment, make electric putter 5's output shaft retract downwards completely, nine lower floor's weights 23 and the height of an upper strata weight 17 will fall to the lowest position, the device is in the state more safe relatively, this moment, ten weights of every group, weight tray 8, remove dull and stereotyped 4 and electric putter 5, can follow the outside that guide rail 2 removed support frame 10 that weighs, conveniently carry out the dismantlement of weight, detect and install.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automatic calibrating installation of electronic scale, includes guide rail support frame (1) and support frame (10) of weighing, its characterized in that: the weighing support frame (10) is a rectangular frame, the guide rail support frame (1) penetrates through the inside of the weighing support frame (10), and an electronic scale (11) is further arranged at the bottom of the weighing support frame (10);

the top of the guide rail support frame (1) is provided with a guide rail (2), the outer wall of the guide rail (2) is connected with a sliding block (3) in a sliding mode, the top of the sliding block (3) is fixedly provided with a movable flat plate (4), the bottom of the movable flat plate (4) is fixedly provided with an electric push rod (5), the top of an output shaft of the electric push rod (5) is fixedly connected with a connecting piece (6), the top of the connecting piece (6) is fixedly provided with a connecting shaft (7), and the top of the connecting shaft (7) is fixedly provided with a weight tray (8);

the utility model discloses a weighing support frame, including weighing support frame (10), inner ceiling wall fixed mounting has suspension support (12), movable groove (13) have been seted up to the inside of suspension support (12), the inside of movable groove (13) is provided with about piece (14), the bottom fixedly connected with of about piece (14) hangs jib (15), the end that hangs jib (15) extends to the outside of suspension support (12).

2. The automatic calibrating device for the electronic scale according to claim 1, wherein: the weight tray (8) is also internally inserted with a guide shaft (9), and the guide shaft (9) is fixedly connected to the top of the movable flat plate (4).

3. The automatic calibrating device for the electronic scale according to claim 1, wherein: supporting legs are arranged on two sides of the bottom of the guide rail supporting frame (1), and the supporting legs and the electronic scale (11) are located on the same plane.

4. The automatic calibrating device for the electronic scale according to claim 1, wherein: still include upper strata weight (17) and lower floor weight (23), mounting hole (16) have been seted up in the center department of upper strata weight (17), hang the bottom fixed mounting of jib (15) on the inner wall of mounting hole (16), the side of upper strata weight (17) has been seted up and has been hung groove (18), the inner wall joint that hangs groove (18) has limiting plate (19), the bottom fixedly connected with stand (20) of limiting plate (19), the bottom fixedly connected with installation piece (21) of stand (20).

5. The automatic calibrating device for the electronic scale according to claim 4, wherein: first fixed orifices (22) have been seted up at the top of lower floor weight (23), installation piece (21) fixed connection is on first fixed orifices (22), hanging groove (18) have also been seted up to the side of lower floor weight (23).

6. The automatic calibrating device for the electronic scale according to claim 5, wherein: electric putter (5), weight tray (8), suspension bracket (12) and affiliated device all are provided with four groups, in every group device, including an upper strata weight (17) and nine lower floor's weights (23) to between adjacent upper strata weight (17) and lower floor's weight (23), all connect through hanging groove (18) and limiting plate (19) between lower floor's weight (23) and lower floor's weight (23).

7. The automatic calibrating device for the electronic scale according to claim 6, wherein: the total weight of the upper layer weight (17) and the lower layer weight (23) is the same as the maximum weighing value of the electronic scale (11).

8. The automatic calibrating device for the electronic scale according to claim 6, wherein: second fixed orifices (24) have still been seted up at the top of lower floor weight (23), the top fixed mounting of second fixed orifices (24) has support column (25), the top of support column (25) is the hemisphere, the top assorted locating hole with support column (25) has been seted up to the bottom of upper strata weight (17) and lower floor weight (23).

9. The automatic calibrating device for the electronic scale according to claim 5, wherein: the suspension groove (18) comprises a limiting groove and a column groove, the height of the limiting groove is larger than the thickness of the limiting plate (19), and the length of the column groove is smaller than that of the upright column (20).