CN219551683U

CN219551683U - External rotatory integrative balance

Info

Publication number: CN219551683U
Application number: CN202320308191.2U
Authority: CN
Inventors: 刘吉元; 刘承党; 赵文斌; 蔡文方
Original assignee: Haier Blood Technology Chongqing Co ltd
Current assignee: Haier Blood Technology Chongqing Co ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-08-18
Anticipated expiration: 2033-02-24

Abstract

The utility model relates to an external rotary integrated scale, wherein a weighing sensor is integrally connected with a scale clamping arm, and a bottom plate fixedly connected with the weighing sensor is rotatably connected outside a chassis through a rotating shaft, a thrust bearing and a lock nut, so that the problem of measuring precision is solved, the precision is improved from +/-1 to +/-0.1, the problem of unbalanced load caused by floating installation and split span type installation of the scale clamping arm and the weighing sensor is solved, and the problem of low weighing precision is solved. The movable connection of the left and right clamping arms can clamp cylindrical step objects (mineral water bottles, plasma bottles produced by the company) and increase the functions of hanging bags and weighing. And most of the components are arranged outside the case, so that after-sales maintenance and installation are more convenient.

Description

External rotatory integrative balance

Technical Field

The utility model relates to weight measurement equipment, in particular to an external rotary integrated scale.

Background

The statements in this section merely provide background information related to the present disclosure and may constitute prior art. In carrying out the present utility model, the inventors have found that at least the following problems exist in the prior art.

The utility model relates to a rotary balance, wherein a balance clamping arm plays a role of clamping a suspended object, and a weighing sensor is utilized for transmitting data to obtain weight information of the suspended object. Currently, a rotary scale as shown in fig. 2 is generally used. The rotary balance is used for installing the weighing sensor 5 and the sensor bracket 13 together on a chassis shell, and the sensor bracket 13 is tightly fastened to the inner surface of the shell. The rotating shaft 9 is fastened on the weighing sensor 5 through a rotating shaft pad 15, a spring 14 and a locking nut 12, so that the main arm 1 is clamped by a balance outside the chassis to rotate. When a weight is hung on the holding arm of the main holding arm 1 of the scale, the weight sensor 5 is deformed due to gravity, so that the weight of the hung object can be obtained through subsequent processing.

However, in practical use, the applicant finds that the final reading will have an error of + -1 from the actual reading of the hanger.

In addition, since most of the structure of the rotary balance is disposed inside the cabinet (only the clamp arms are outside), once the rotary balance fails, the cabinet must be disassembled for maintenance, and after-sales maintenance and installation are inconvenient.

Moreover, the plasma bottle produced by the company is a cylindrical step object, so that the clamping arm is easy to clamp and fall off.

Disclosure of Invention

In view of the above, it is an object of the present utility model to solve some of the problems of the prior art, or at least to alleviate them.

An external rotary integrated scale, comprising

The weighing sensor is used for transmitting data to equipment in the case;

the balance clamping arm comprises a balance clamping main arm, a left clamping arm and a right clamping arm; the side surface of the main clamping arm of the balance is connected with the first end of the weighing sensor, and one end of the main clamping arm of the balance is respectively connected with the left clamping arm and the right clamping arm;

the bottom plate is connected with the second end of the weighing sensor;

the rotating shaft penetrates through one end of the bottom plate and is used for being in rotary connection with the chassis.

Further, a thrust bearing and a lock nut are arranged in the case; the thrust bearing is sleeved on the rotating shaft, and the bottom plate is rotationally connected with the chassis through the locking nut.

Further, a gasket is arranged between the bottom plate and the thrust bearing.

The balance clamping main arm is movably connected with the left clamping arm and the right clamping arm; and an extension spring is arranged in the main clamping arm of the balance and is connected with the left clamping arm and the right clamping arm, so that the left clamping arm and the right clamping arm can be opened and closed in an included angle.

Further, the maximum opening and closing degree of the included angle is 120 degrees.

Further, hooks are arranged at the end parts of the left clamping arm and the right clamping arm.

The external rotary integrated scale also comprises an upper cover which is arranged above the weighing sensor and is matched with the bottom plate or/and the main clamping arm of the scale; the upper surface of the upper cover is provided with a U-shaped groove for fixing the hose.

Optionally, the rotating shaft is a hollow rotating shaft, and the data line of the weighing sensor passes through the hollow part of the rotating shaft and is connected with equipment in the case.

Further, the second end of the weighing sensor is fixedly connected with the bottom plate through a cushion block.

The utility model has the following beneficial effects:

1. the weighing sensor and the balance clamping main arm are connected integrally, and the weighing sensor and the balance clamping main arm swing synchronously when in use, so that unbalanced load errors are eliminated, and the precision can reach +/-0.1;

2. all the components except the thrust bearing and the locking nut are arranged outside the case, so that after-sales maintenance and installation are convenient; the structure is simpler;

3. the left clamping arm and the right clamping arm can clamp the suspended object to a certain extent by the tension spring, so that the problem that cylindrical step objects such as plasma bottles cannot be clamped is avoided;

4. the U-shaped groove of the upper cover can be used for fixing a hose on a plasma bottle or a plasma bag, and can avoid the influence caused by winding the hose when the integrated scale rotates.

Drawings

The above-described structure of the present utility model can be further illustrated by the non-limiting examples given in the following figures.

FIG. 1 is a block diagram of the present utility model;

fig. 2 is a structural diagram of the prior art.

Wherein: 1-clamping a main arm by a scale; 2-left clamping arm; 3-hooking; 4-right clamping arm; 5-a weighing sensor; 6-an upper cover; 7-cushion blocks; 8-a bottom plate; 9-rotating shaft; 10-a gasket; 11-thrust bearings; 12-locking nut; 13-a sensor holder; 14-a spring; 15-a pivot pad.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings, wherein the embodiments of the present utility model are for the purpose of illustrating the utility model only and not for the purpose of limiting the same, and wherein various substitutions and modifications are made by the person of ordinary skill in the art without departing from the technical spirit of the present utility model, and are intended to be included in the scope of the present utility model.

According to the long-term observation and careful study of the applicant, it was found that the error in the reading of the load cell 5 was caused mainly by the fact that the load cell 5 and the balance clamp main arm 1 in the structure of fig. 2 were floating locked in the longitudinal direction by the spring 14. As shown in fig. 2, the split mounting of the main arm 1 and the load cell 5 causes an offset load between the main arm 1 and the load cell 5, and thus the weighing accuracy is not high.

In view of this, the applicant devised the following structure to overcome this drawback.

As shown in FIG. 1, an external rotary integral scale comprises

The weighing sensor 5 is used for transmitting data to equipment in the case;

the balance clamping arm comprises a balance clamping main arm 1, a left clamping arm 2 and a right clamping arm 4; the side surface of the main clamping arm 1 of the balance is connected with the first end of the weighing sensor 5, and one end of the main clamping arm is respectively connected with the left clamping arm 2 and the right clamping arm 4;

a bottom plate 8 connected with the second end of the weighing sensor 5;

the rotating shaft 9 passes through one end of the bottom plate 8 and is used for being rotatably connected with the chassis.

With the structure, the weighing sensor 5 and the balance clamping arm synchronously swing when the weighing sensor is used due to the fact that the weighing sensor 5 and the balance clamping main arm 1 are connected into a whole outside the rotating function of the external part (comprising the weighing sensor 5 and the balance clamping arm) outside the chassis is maintained, so that unbalanced load errors are eliminated. Through actual measurement by the applicant, the precision can reach +/-0.1.

As shown in fig. 2, a thrust bearing 11 and a lock nut 12 are arranged in the case; the thrust bearing 11 is sleeved on the rotating shaft 9, and the bottom plate 8 is rotatably connected with the chassis through the locking nut 12. By adopting the structure, all the components except the thrust bearing 11 and the locking nut 12 are arranged outside the case, so that after-sales maintenance and installation are convenient.

As shown in fig. 1, a washer 10 is provided between the base plate 8 and the thrust bearing 11.

As shown in fig. 1, the main balance clamping arm 1 is movably connected with the left clamping arm 2 and the right clamping arm 4; the balance clamping main arm 1 is internally provided with an extension spring which is connected with the left clamping arm 2 and the right clamping arm 4, so that the left clamping arm and the right clamping arm can be opened and closed in an included angle. The maximum opening and closing degree of the included angle is 120 degrees. Through the action of the extension spring, the left clamping arm and the right clamping arm can clamp the suspended object to a certain extent, so that the problem that cylindrical step objects such as plasma bottles cannot be clamped is avoided.

The ends of the left clamping arm 2 and the right clamping arm 4 are provided with hooks 3, as shown in fig. 1. The hook 3 can play a role in facilitating the slurry hanging bag.

The external rotary integrated scale also comprises an upper cover 6 which is arranged above the weighing sensor 5 and is matched with the bottom plate 8 or/and the main clamping arm 1 of the scale; the upper surface of the upper cover 6 is provided with a U-shaped groove for fixing the hose. The upper cover 6 can be designed according to the shape of the base plate 8 and/or the main arm 1 of the balance clamp, and the cover is arranged on the whole external device, so that the components comprising the weighing sensor 5 are protected. The U-shaped groove can be used for fixing a hose on a plasma bottle or a plasma bag, such as a hose with the diameter of 4-4.8, and can avoid the influence caused by winding the hose when the integrated scale rotates.

The load cell 5 may be connected to the equipment in the cabinet using data lines to transmit data. Preferably, as shown in fig. 1, the rotating shaft 9 is a hollow rotating shaft, and the data line of the weighing sensor 5 passes through the hollow part of the rotating shaft 9 and is connected with the equipment in the chassis. Of course, the data line can also be connected with the equipment through the chassis alone or communicated in a wireless mode.

The second end of the weighing sensor 5 is fixedly connected with the bottom plate 8 through a cushion block 7.

The utility model solves the problem of measuring precision, and improves the precision from +/-1 to +/-0.1. The problem of floating installation, offset load caused by separate span type installation of the balance clamping arm and the weighing sensor, and low weighing precision is solved. The movable connection of the left and right clamping arms can clamp cylindrical step objects (mineral water bottles, plasma bottles produced by the company) and hang bags for weighing. Compared with the prior art, the after-sale maintenance and installation are more convenient.

The fixed connection which is not particularly specified can be a connection mode such as riveting, welding, bolt connection and the like, and the movable connection can be a connection mode such as hinging and the like.

Claims

1. An external rotary integrated scale, which is characterized by comprising

The weighing sensor (5) is used for transmitting data to equipment in the case;

the balance clamping arm comprises a balance clamping main arm (1), a left clamping arm (2) and a right clamping arm (4); the side surface of the balance clamping main arm (1) is connected with the first end of the weighing sensor (5), and one end of the balance clamping main arm is respectively connected with the left clamping arm (2) and the right clamping arm (4);

the bottom plate (8) is connected with the second end of the weighing sensor (5);

the rotating shaft (9) passes through one end of the bottom plate (8) and is used for being rotationally connected with the case.

2. The external rotary integral scale according to claim 1, wherein a thrust bearing (11) and a lock nut (12) are arranged in the chassis; the thrust bearing (11) is sleeved on the rotating shaft (9), and the bottom plate (8) is rotationally connected with the chassis through the locking nut (12).

3. An outboard rotary integral scale according to claim 2, characterized in that a washer (10) is provided between the base plate (8) and the thrust bearing (11).

4. The external rotary integrated scale according to claim 1, wherein the main scale clamping arm (1) is movably connected with the left clamping arm (2) and the right clamping arm (4); an extension spring is arranged in the main clamping arm (1) of the balance and is connected with the left clamping arm (2) and the right clamping arm (4), so that the left clamping arm and the right clamping arm can be opened and closed in an included angle.

5. The external rotating integral scale of claim 4, wherein the included angle has a maximum opening and closing degree of 120 °.

6. The external rotating integrated scale according to claim 4, wherein the ends of the left clamping arm (2) and the right clamping arm (4) are provided with hooks (3).

7. The external rotary integrated scale according to claim 1, further comprising an upper cover (6) arranged above the weighing sensor (5) and adapted to the base plate (8) or/and the main clamping arm (1); the upper surface of the upper cover (6) is provided with a U-shaped groove for fixing the hose.

8. The external rotary integral scale according to claim 1, wherein the rotating shaft (9) is a hollow rotating shaft, and the data line of the weighing sensor (5) passes through the hollow part of the rotating shaft (9) and is connected with equipment in the case.

9. The external rotary integral scale according to claim 1, characterized in that the second end of the weighing sensor (5) is fixedly connected with the bottom plate (8) through a cushion block (7).