CN212320879U

CN212320879U - Electronic balance

Info

Publication number: CN212320879U
Application number: CN202021010540.5U
Authority: CN
Inventors: 金传秋
Original assignee: Guangdong Huaheng Testing Technology Co ltd
Current assignee: Guangdong Huaheng Testing Technology Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-01-08
Anticipated expiration: 2030-06-04

Abstract

The utility model discloses an electronic balance, include: the inner part of the base is hollow, a workbench is arranged at the top of the base, and a weighing disc is arranged at the center of the workbench; the weighing mechanism is arranged in the base and comprises a weighing shaft, a connecting shaft, a sensor and a microprocessor, the upper end of the weighing shaft extends out of the base to be connected with the weighing disc, and the lower end of the weighing shaft is connected with the connecting shaft; the sensor is arranged at the bottom end of the connecting shaft, and the microprocessor is electrically connected with the sensor; and the balance mechanism is arranged in the base and used for keeping the gravity center of the weighing mechanism vertically downward in the weighing process. Through setting up balance mechanism, can let weighing mechanism weigh the in-process, keep the focus perpendicularly downwards to reduce the influence that ambient environment vibrations caused to measuring result, promote the measuring accuracy.

Description

Electronic balance

Technical Field

The utility model relates to a balance technical field, in particular to electronic balance.

Background

A balance is composed of a balance beam with two arms, a disk hung on each arm, an object with known mass in one disk, and an object to be measured in another disk.

The electronic balance is one of balances, adopts the electromagnetic sensing principle to weigh, has the advantages of high precision and convenient use, and is widely applied to various fields of measuring articles; when the electronic balance is used for measurement, the electronic balance is easily influenced by the vibration of the surrounding environment, so that the gravity center is unstable during measurement, and the final measurement result is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an electronic balance, include:

the inner part of the base is hollow, a workbench is arranged at the top of the base, and a weighing disc is arranged at the center of the workbench;

the weighing mechanism is arranged in the base and comprises a weighing shaft, a connecting shaft, a sensor and a microprocessor, the upper end of the weighing shaft extends out of the base to be connected with the weighing disc, and the lower end of the weighing shaft is connected with the connecting shaft; the sensor is arranged at the bottom end of the connecting shaft, and the microprocessor is electrically connected with the sensor;

and the balance mechanism is arranged in the base and used for keeping the gravity center of the weighing mechanism vertically downward in the weighing process.

According to the utility model discloses an embodiment has following beneficial effect at least:

through setting up balance mechanism, can let weighing mechanism weigh the in-process, keep the focus perpendicularly downwards to reduce the influence that ambient environment vibrations caused to measuring result, promote the measuring accuracy.

According to some embodiments of the present invention, the balance mechanism comprises a support frame and a counterweight, the support frame is fixedly mounted on the base, the weighing mechanism is disposed inside the support frame, and the upper end of the weighing shaft extends out of the support frame and the base to be connected with the weighing plate; symmetrical limiting parts are fixedly arranged on the inner side wall of the supporting frame, and the limiting parts are movably connected with the connecting shaft; the supporting frame is also fixedly provided with an extrusion plate below the sensor, the middle part of the extrusion plate is provided with a through hole, and a cavity is arranged below the extrusion plate; the balancing weight is hung in the cavity and penetrates through the through hole and the sensor through a guide rope to be connected with the center of the bottom of the connecting shaft.

According to some embodiments of the present invention, the limiting member is a limiting rod, one end of the limiting rod is fixed on the inner side wall of the supporting frame, and the other end is provided with a sliding block; the side wall of the connecting shaft is provided with symmetrical slide rails, and the slide blocks are embedded in the slide rails.

According to the utility model discloses a some embodiments, the lower extreme of base is provided with a plurality of shock attenuation stabilizer blade, the shock attenuation stabilizer blade includes: the compression spring is arranged between the bottom plate and the top plate, and the top plate is connected with the base.

According to some embodiments of the utility model, the fixed bolt that is provided with in roof top, be provided with on the base with the screw of bolt looks adaptation is twisted and is moved the bolt, in order to adjust the height of shock attenuation stabilizer blade.

According to some embodiments of the invention, the outside of the compression spring is provided with a rubber ring.

According to some embodiments of the invention, the bottom of the bottom plate is provided with a non-slip mat.

According to some embodiments of the utility model, the top of workstation is provided with the glass windshield, the side of glass windshield has the cover door through the hinge.

According to some embodiments of the utility model, the inside of glass windshield is connected with the drier box through the buckle.

According to some embodiments of the utility model, the base surface still installs the numerical control panel, the numerical control panel with the microprocessor electricity is connected.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of an external structure of an electronic balance according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a balance mechanism and a weighing mechanism provided in an embodiment of the present invention;

fig. 3 is a schematic structural view of a shock absorbing foot according to an embodiment of the present invention;

description of reference numerals:

10. an electronic balance; 100. a base; 110. a work table; 111. a weighing pan; 120. a glass windshield; 210. a weighing shaft; 220. a connecting shaft; 221. a slide rail; 230. a sensor; 310. a support frame; 311. a limiting rod; 312. a slider; 313. a pressing plate; 314. a through hole; 320. a cavity; 330. a balancing weight; 331. leading a rope; 410. a base plate; 420. a compression spring; 430. a top plate; 431. a bolt; 440. a rubber ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, an embodiment of the present invention provides an electronic balance 10 including

The inner part of the base 100 is hollow, a workbench 110 is arranged at the top of the base 100, and a weighing disc 111 is arranged at the center of the workbench 110;

the weighing mechanism is arranged in the base 100 and comprises a weighing shaft 210, a connecting shaft 220, a sensor 230 and a microprocessor (not shown in the figure), the upper end of the weighing shaft 210 extends out of the base 100 to be connected with the weighing disc 111, and the lower end of the weighing shaft is connected with the connecting shaft 220; the sensor 230 is arranged at the bottom end of the connecting shaft 220, and the microprocessor is electrically connected with the sensor 230;

and the balance mechanism is arranged in the base 100 and used for keeping the gravity center of the weighing mechanism vertically downward in the weighing process.

The electronic balance that this embodiment provided can let weighing mechanism in weighing process through setting up balance mechanism, keeps the atress perpendicular downwards to reduce the influence that ambient environment vibrations caused to the measuring result, promote the measuring accuracy.

As shown in fig. 2, specifically, the balancing mechanism includes a supporting frame 310 and a counterweight 330, the supporting frame 310 is fixedly mounted on the base 100, the weighing mechanism is disposed inside the supporting frame 310, and the upper end of the weighing shaft 210 extends out of the supporting frame 310 and is connected with the base 100 and the weighing pan 111; the inner side wall of the supporting frame 310 is fixedly provided with symmetrical limiting parts, the limiting parts are movably connected with the connecting shaft 220, the limiting parts can limit the connecting shaft 220 in the left-right direction, the center of gravity of the connecting shaft 220 is prevented from being deviated, component forces in other directions are reduced, and the measuring accuracy of the electronic balance 10 in a vibration environment is improved. The supporting frame 310 is further fixedly provided with a pressing plate 313 below the sensor 230, the middle part of the pressing plate 313 is provided with a through hole 314, and a cavity 320 is arranged below the pressing plate 313; the weight 330 is suspended in the cavity 320 and connected to the bottom center of the connection shaft 220 through the through hole 314 and the sensor 230 by a lead 331. Through setting up balancing weight 330, can make weighing mechanism remain downwards all the time in the atress direction of weighing the in-process, avoid producing the component force of other directions, can reduce because of vibrations cause the influence of measuring inaccurate, promote electronic balance 10 measuring accuracy. The pressure of the sensor 230 against the compression plate 313 generates pressure data that is sent to the microprocessor for processing to obtain the weight of the object being weighed. It should be noted that the sensor 230 may be disposed in a ring shape, so that the rope 331 can pass through the middle of the ring shape to connect with the bottom center of the spindle 220; the number of the sensors 230 may also be 2, and the sensors are symmetrically arranged on two sides of the bottom end of the connecting shaft 220. The microprocessor needs to subtract the weight of the weight 330, the leader 331 and the weighing mechanism itself when calculating the pressure data collected by the sensor 230, and since the sensors and microprocessors of electronic balances are well known in the art, the calculation and working principle thereof will not be described in detail here. In addition, the balance mechanism can also be a plurality of fixed lantern rings that set up in the base inside, for example, the lantern ring is with the structure looks adaptation of connecting axle (if the connecting axle is circular, then the lantern ring is circular lantern ring), and the connecting axle cover is established in these lantern rings, and the lantern ring is smooth setting with the contact surface of connecting axle, can make weighing mechanism in weighing process through these lantern rings, keeps the focus perpendicularly downwards, avoids producing the component force of other directions, can reduce because of vibrations cause the influence that the measurement is inaccurate.

Specifically, the limiting member is a limiting rod 311, one end of the limiting rod 311 is fixed on the inner side wall of the supporting frame 310, and the other end is provided with a sliding block 312; the side wall of the connecting shaft 220 is provided with a sliding rail 221 matched with the sliding block 312, and the sliding block 312 is embedded in the smooth sliding rail 221, so that the influence caused by friction force can be reduced.

Specifically, the lower extreme of base 100 is provided with a plurality of shock attenuation stabilizer blade, and the shock attenuation stabilizer blade includes: a bottom plate 410, a compression spring 420, and a top plate 430, the compression spring 420 being disposed between the bottom plate 410 and the top plate 430, the top plate 430 being connected to the base 100. Four shock-absorbing legs may be provided on the four corners of the base 100. The shock attenuation stabilizer blade can slow down the influence that vibrations caused, promotes the measuring degree of accuracy.

Specifically, a bolt 431 is fixedly disposed above the top plate 430, a screw hole (not shown) adapted to the bolt 431 is disposed on the base 100, and the bolt 431 is screwed to adjust the height of the shock absorbing leg. If the placing point of the electronic balance 10 is not horizontal, a corresponding shock absorption support leg can be screwed, so that the whole electronic balance 10 is kept horizontal, and the measuring accuracy is improved.

Specifically, the outer side of the compression spring 420 is provided with a rubber ring 440. On one hand, dust, corrosive substances and the like can be prevented from falling on the compression spring 420, so that the elasticity is changed or even deformed, and on the other hand, the overall vibration reduction effect of the vibration reduction support leg is further improved.

Specifically, the bottom of the bottom plate 410 is provided with a non-slip mat (not shown in the figure), and the non-slip mat can play a role in non-slip due to the fact that the bottom plate 410 directly contacts with the ground.

Specifically, a glass windshield 120 is disposed above the worktable 110, and a door (not shown) is hinged to a side surface of the glass windshield 120 by a hinge. A desiccant box (not shown) is connected to the inside of the glass windshield 120 by a snap fit to maintain a dry measurement environment.

Specifically, a numerical control panel (not shown) is further installed on the surface of the base 100, and the numerical control panel is electrically connected to the microprocessor.

Referring to fig. 1 to 3, an embodiment of the present invention provides an electronic balance 10 including:

the inner part of the base 100 is hollow, a workbench 110 is arranged at the top of the base 100, a weighing disc 111 is arranged at the center of the workbench 110, and a glass windshield 120 is arranged above the workbench 110, so that the influence of external factors on measurement is reduced; the side surface of the glass windshield 120 is hinged with a cover door through a hinge, and the inside of the glass windshield 120 is connected with a drying agent box through a buckle so as to keep a dry measuring environment; the lower end of the base 100 is also provided with a plurality of shock absorption support legs for reducing the influence of shock on measurement and improving the measurement accuracy; shock attenuation stabilizer blade comprises bottom plate 410, compression spring 420 and roof 430, and compression spring 420 sets up between bottom plate 410 and roof 430, and the fixed bolt 431 that is provided with in roof 430 top is provided with the screw with bolt 431 looks adaptation on the base 100, twists bolt 431, can adjust the height of shock attenuation stabilizer blade, avoids electronic balance 10 to place the influence that the point is out of level caused.

The weighing mechanism is arranged in the base 100 and comprises a weighing shaft 210, a connecting shaft 220, a sensor 230 and a microprocessor, the upper end of the weighing shaft 210 extends out of the base 100 to be connected with the weighing plate 111, and the lower end of the weighing shaft is connected with the connecting shaft 220; the sensor 230 is disposed at the bottom end of the connection shaft 220, and the microprocessor is electrically connected to the sensor 230.

The balance mechanism is arranged in the base 100 and comprises a support frame 310 and a balancing weight 330, the support frame 310 is fixedly arranged on the base 100, the weighing mechanism is arranged in the support frame 310, and the upper end of the weighing shaft 210 penetrates through the support frame 310 and the base 100 to be connected with the weighing plate 111; symmetrical limiting rods 311 are fixedly arranged on the inner side wall of the supporting frame 310, symmetrical sliding rails 221 are arranged on the side wall of the connecting shaft 220, the sliding blocks 312 are embedded in the sliding rails 221, the limiting rods 311 can limit the connecting shaft 220 in the left-right direction, the center of gravity of the connecting shaft 220 is prevented from being deviated, component forces in other directions are reduced, and the accuracy of measurement of the electronic balance 10 in a vibration environment is improved. The supporting frame 310 is further fixedly provided with a pressing plate 313 below the sensor 230, the middle part of the pressing plate 313 is provided with a through hole 314, and a cavity 320 is arranged below the pressing plate 313; the balancing weight 330 is suspended in the cavity 320, passes through the through hole 314 and the sensor 230 through the guide rope 331 and is connected with the center of the bottom of the connecting shaft 220, and the balancing weight 330 is suspended in the cavity 320 through the guide rope 331, so that the stress direction of the weighing mechanism in the weighing process is always kept downward, and the influence of inaccurate measurement caused by vibration can be reduced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic balance, comprising:

the inner part of the base (100) is hollow, a workbench (110) is arranged at the top of the base (100), and a weighing disc (111) is arranged at the center of the workbench (110);

the weighing mechanism is arranged in the base (100) and comprises a weighing shaft (210), a connecting shaft (220), a sensor (230) and a microprocessor, the upper end of the weighing shaft (210) extends out of the base (100) to be connected with the weighing disc (111), and the lower end of the weighing shaft is connected with the connecting shaft (220); the sensor (230) is arranged at the bottom end of the connecting shaft (220), and the microprocessor is electrically connected with the sensor (230);

the balance mechanism is arranged in the base (100) and used for keeping the gravity center of the weighing mechanism vertically downward in the weighing process.

2. The electronic balance according to claim 1, wherein the balance mechanism comprises a support frame (310) and a counterweight (330), the support frame (310) is fixedly mounted on the base (100), the weighing mechanism is disposed inside the support frame (310), and the upper end of the weighing shaft (210) extends out of the support frame (310) and the base (100) to be connected with the weighing pan (111); symmetrical limiting parts are fixedly arranged on the inner side wall of the supporting frame (310), and the limiting parts are movably connected with the connecting shaft (220); the supporting frame (310) is also fixedly provided with a squeezing plate (313) below the sensor (230), the middle part of the squeezing plate (313) is provided with a through hole (314), and a cavity (320) is arranged below the squeezing plate; the balancing weight (330) is suspended in the cavity (320) and is connected with the center of the bottom of the connecting shaft (220) through the through hole (314) and the sensor (230) by a guide rope (331).

3. The electronic balance according to claim 2, wherein the limiting member is a limiting rod (311), one end of the limiting rod (311) is fixed on the inner side wall of the supporting frame (310), and the other end is provided with a sliding block (312); the side wall of the connecting shaft (220) is provided with symmetrical sliding rails (221), and the sliding block (312) is embedded in the sliding rails (221).

4. An electronic balance according to claim 1, wherein the lower end of the base (100) is provided with a plurality of shock absorbing legs, the shock absorbing legs comprising: the spring seat comprises a bottom plate (410), a compression spring (420) and a top plate (430), wherein the compression spring (420) is arranged between the bottom plate (410) and the top plate (430), and the top plate (430) is connected with the base (100).

5. The electronic balance according to claim 4, wherein a bolt (431) is fixedly arranged above the top plate (430), a screw hole matched with the bolt (431) is arranged on the base (100), and the bolt (431) is screwed to adjust the height of the shock absorption leg.

6. An electronic balance according to claim 4, characterized in that the outside of the compression spring (420) is provided with a rubber ring (440).

7. An electronic balance according to claim 4, wherein the bottom of the base plate (410) is provided with a non-slip pad.

8. The electronic balance according to claim 1, wherein a glass windshield (120) is disposed above the working platform (110), and a door is hinged to a side of the glass windshield (120) through a hinge.

9. The electronic balance according to claim 8, wherein the inside of the glass windshield (120) is connected with a desiccant box by a snap fit.

10. An electronic balance according to any of claims 1 to 9, wherein a numerical control panel is further mounted on the surface of the base (100), and the numerical control panel is electrically connected with the microprocessor.