WO2024051483A1

WO2024051483A1 - Weighing module having lifting assembly and weighing device comprising the same

Info

Publication number: WO2024051483A1
Application number: PCT/CN2023/114063
Authority: WO
Inventors: Youyi WU; Chunhui Li; Dandan HUANG; Zheng Guo; Dongqian JIA
Original assignee: Mettler-Toledo (Changzhou) Precision Instruments Ltd.; Mettler-Toledo (Changzhou) Measurement Technology Ltd.; Mettler-Toledo Technologies (China) Co., Ltd
Priority date: 2022-09-07
Filing date: 2023-08-21
Publication date: 2024-03-14
Also published as: CN117705252A

Abstract

The present invention provides a weighing module having a lifting assembly and a weighing device comprising the same. The weighing module comprises a top plate, an inverted U-shaped plate with an upward opening, a sensor, a base plate a lifting assembly and a bearing head detachably connected to the top plate. An upper portion of the inverted U-shaped plate is connected to the top plate, a fixed parallelogram leg of the sensor is fixed to the base plate, and a movable parallelogram leg of the sensor is connected to the top plate the bearing head. The lifting assembly comprises a one end portion and the other end portion. The one end portion of the lifting assembly passes through a lower portion of the U-shaped plate and is fixed to the base plate, and the other end portion of the lifting assembly is arranged in the inverted U-shaped plate and is located under the top plate. When the weighing module is in a lifting state, the other end portion of the lifting assembly is raised up until the top plate is lifted, such that there is a spacing between the top plate and the bearing head. The present invention develops a set of components having a lifting function, which are organically integrated with the weighing module for use as a whole in a mobile weighing system. It can be used perfectly for retrofitting and upgrading of the old or conventional weighing systems. Meanwhile, the performance of the original weighing system remains unchanged.

Description

WEIGHING MODULE HAVING LIFTING ASSEMBLY AND WEIGHING DEVICE COMPRISING THE SAME

BACKGROUND OF THE INVENTION

Technical Field

The present invention relates to the field of weighing modules, and more particularly, to a weighing module having a lifting assembly and a weighing device comprising the same, wherein the weighing device is organically integrated with the weighing module to implement applications in which the weighing module needs to be lifted frequently in certain industries.

Background Art

Weighing modules are generally used for weighing processes in the food, pharmaceutical, and chemical industries, and are typically mounted at the bottom of a material tank lug or leg to weigh a material tank. With the upgrading of the industry and the development of fine chemicals, more and more material tanks are equipped with stirring motors for material mixing, instead of simply being used as warehouses.

In certain industries, the weighing module, together with the material tank to be weighed, is placed on a platform, for weighing and forms a weighing system with the platform. The weighing system will be moved back and forth frequently. If the weighing module is not lifted and locked while the platform is moving, it will oscillate under the vibration, shaking, pushing force from the hand, and inertia force of the material generated during the movement of the platform.

Such situations not only pose a hidden danger to the safety of the system, but also may damage a sensor and even may directly destroy the sensor in the event of a sudden impact. Therefore, for such a weighing system which needs to be moved, the weighing module is necessarily provided with a lifting function.

FIG. 1 is a schematic structural diagram of a conventional beam sensor module.

As shown in FIG. 1, the conventional weighing module does not have this function. Currently, some lifting tools are used as accessories, that is, the lifting tool and the weighing module are independent of each other and are placed in a certain position of the weighing module for lifting when needed, and then removed for storage until the next time when the lifting tool is remounted on the weighing module for lifting.

The disadvantages of this type of mode are obvious. On one hand, the lifting tool is easy to be discarded or lost, and on the other hand, the lifting tool being unable to be integrated with the weighing module will certainly cause some performance defects.

In view of this, the inventor of the present application has designed a weighing module having a lifting assembly and a weighing device comprising the same in order to overcome the above-mentioned technical problems.

SUMMARY

The technical problems addressed herein comprises the defects that the weighing module in the prior art does not have a lifting function, has a potential safety hazard, and is liable to damage a sensor. To overcome these defects, the present invention provides a weighing module having a lifting assembly and a weighing device comprising the same.

The present invention solves the above technical problems through the following technical solution:

a weighing module having a lifting assembly, \said weighing module comprising a top plate, an inverted U-shaped plate with an upward opening, a sensor, a base plate, a lifting assembly and a bearing head detachably connected to the top plate, wherein an upper portion of the inverted U-shaped plate is connected to the top plate, a fixed parallelogram leg of the sensor is fixed to the base plate, and a movable parallelogram leg of the sensor is connected to the top plate through the bearing head; characterized in that the lifting assembly comprises a one end portion and a other end portion.

The one end portion of the lifting assembly passes through a lower portion of the inverted U-shaped plate and is fixed to the base plate, and the other end portion of the lifting assembly is arranged in the inverted U-shaped plate and is located under the top plate.

When the weighing module is in a lifting state, the other end portion of the lifting assembly is raised up until the top plate is lifted, such that there is a spacing between the top plate and the bearing head.

According to an embodiment of the present invention, the one end portion of the lifting assembly comprises a double-ended stud and the other end portion of the lifting assembly comprises an upper sleeve, the lower portion of the inverted U-shaped plate is provided with a first mounting hole in which an anti-overturn sleeve is mounted, an upper end of the double-ended stud is mounted in the anti-overturn sleeve, and the upper sleeve is mounted on a lower end of the double-ended stud.

According to an embodiment of the present invention, the double-ended stud has an integral structure.

According to an embodiment of the present invention, the double-ended stud comprises an upper stud and a lower stud, and the upper stud and the lower stud as upper and lower parts are integrated together.

According to an embodiment of the present invention, the upper stud is provided with an upper mounting seat on which a first notch and a first step are provided, the lower stud is provided with a lower mounting seat on which a second notch and a through-hole are provided, the first step cooperates with the second notch, and the first notch and the through-hole are oppositely disposed and are connected and fixed through a connector.

According to an embodiment of the present invention, the upper sleeve and the upper stud are connected by threads.

According to an embodiment of the present invention, a top portion of the upper sleeve is a spherical projection, a bottom portion of the top plate is provided with a concave spherical recess, and the top portion of the upper sleeve and the concave spherical recess of the top plate vertically correspond to each other.

According to an embodiment of the present invention, a radius of the concave spherical recess of the top plate is larger than a radius of the spherical projection of the top portion of the upper sleeve.

According to an embodiment of the present invention, threads on the upper end and the lower end of the double-ended stud are left-handed and right-handed, respectively.

According to an embodiment of the present invention, the weighing module further comprises a rocker column, wherein the rocker column is connected to the bearing head.

According to an embodiment of the present invention, the rocker column is further attached to the movable parallelogram leg of the sensor.

The present invention also provides a weighing device, which is characterized in that the weighing device comprises a weighing module having a lifting assembly as described above.

Several positive improvement effects follow from the present invention.

The present invention provides a weighing module having a lifting assembly and a weighing device comprising the same and develops a set of components having a lifting function, the set of components are organically integrated with the module for use as a whole in a mobile weighing system. The weighing module of the present invention can be used for new products processing and works at new customer sites.

Furthermore, since the components for the weighing module developed by the present invention do not make any changes to the original weighing module, a new lifting function is achieved by replacing only one part, so that the components can also be used perfectly for retrofitting and upgrading of the old or conventional weighing systems. Meanwhile, the performance of the original weighing system is not changed.

The above and other features, properties and advantages of the present invention will become more apparent from the description below in conjunction with the accompanying drawings and embodiments, and the same features are always indicated by the same reference numerals in the figures, in which:

Fig. 1 is a schematic structural diagram of a conventional beam sensor module.

Fig. 2 is a perspective view of a weighing module having a lifting assembly according to the present invention in a metering state.

Fig. 3 is a longitudinal sectional view of FIG. 2.

Fig. 4 is a perspective view of a weighing module having a lifting assembly according to the present invention in a lifting state.

Fig. 5 is a longitudinal sectional view of FIG. 4.

Fig. 6 is a schematic structural diagram of an embodiment of a lifting assembly in a weighing module having a lifting assembly according to the present invention.

Fig. 7 is a perspective view of an upper sleeve in a weighing module having a lifting assembly according to the present invention.

Fig. 8 is a perspective view of a double-ended stud in a weighing module having a lifting assembly according to the present invention.

Fig. 9 is a perspective view of a lower stud in a weighing module having a lifting assembly according to the present invention.

Fig. 10 is a perspective view of an upper stud in a weighing module having a lifting assembly according to the present invention.

Fig. 11 is a schematic structural diagram of another embodiment of a lifting assembly in a weighing module having a lifting assembly according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

To make the above objectives, features and advantages of the present invention more apparent and easier to understand, specific implementations of the present invention are described in detail below in conjunction with the accompanying drawings.

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The same reference numerals used in all the accompanying drawings denote identical or similar parts wherever possible.

Furthermore, although the terms used in the present invention are selected from well-known common terms, some of the terms mentioned in the description of the present invention may have been selected by the applicant according to his or her determination, and the detailed meaning thereof is described in the relevant section described herein.

Furthermore, the present invention must be understood, not simply by the actual terms used but also by the meanings encompassed by each term.

As shown in FIGS. 2 to 11, the present invention also provides a weighing module 200 having a lifting assembly 50, said weighing module comprises a top plate 10, an inverted U-shaped plate 20 with an upward opening, a sensor 30, a base plate 40, a lifting assembly 50 and a bearing head 70 detachably connected to the top plate 10. An upper portion 201 of the inverted U-shaped plate 20 is connected to the top plate 10, a fixed parallelogram leg 301 of the sensor 30 is fixed to the base plate 40, and a movable parallelogram leg 302 of the sensor is connected to the top plate 10 through the bearing head 70.

The lifting assembly 50 comprises a one end portion 501 and a other end portion 502. One end portion 501 of the lifting assembly 50 passes through a lower portion 202 of the inverted U-shaped plate 20 and is fixed to the base plate 40. The other end portion 502 of the lifting assembly 50 is arranged in the inverted U-shaped plate 20 and is located under the top plate 10. When the weighing module is in a lifting state, the other end portion 502 of the lifting assembly 50 is raised up until the top plate 10 is lifted, such that there is a spacing a between the top plate 10 and the bearing head 70.

Preferably, one end portion 501 of the lifting assembly 50 comprises a double-ended stud 51 and the other end portion 502 of the lifting assembly 50 comprises an upper sleeve 52. The lower portion 202 of the inverted U-shaped plate 20 is provided with a first mounting hole 203 in which an anti-overturn sleeve 80 is mounted. An upper end 517 of the double-ended stud 51 is mounted in the anti-overturn sleeve 80, and the upper sleeve 52 is mounted on a lower end 518 of the double-ended stud 51. The upper sleeve 52 and the upper stud 511 are optionally connected by threads.

In particular, for example, in an embodiment of the present application, the double-ended stud 51 has an integral structure.

For another example, in another embodiment of the present application, the double-ended stud 51 comprises an upper stud 511 and a lower stud 512, and the upper stud 511 and the lower stud 512 as upper and lower parts are integrated together.

Preferably, the upper stud 511 is provided with an upper mounting seat 54 on which one first notch 513 and one first step 514 are provided. The lower stud 512 is provided with a lower mounting seat 56 on which one second notch 515 and one through-hole 516 are provided. The through-hole 516 is preferably a threaded through-hole. The first step 514 cooperates with the second notch 515, and the first notch 513 and the through-hole 516 are oppositely disposed and are connected and fixed through a connector 100. The connector 100 herein may preferably be a bolt.

In operation, the lower stud 512 is first mounted to the base plate 40 and, when screwed to the last few threads, the screwing shall be stopped at an appropriate position. The assembly containing the upper sleeve 52 and the upper stud 511 is pushed horizontally into engagement with the lower stud 512, the first step 514 of the upper stud 511 is inserted into the second notch 515 of the lower stud 512, and then a small bolt (i.e., the connector 100) is screwed into the threaded through-hole of the lower stud 512 from top to bottom through a step notch (the first notch 513) of the upper stud 511. Then, the entire assembly is tightened to the base plate 40.

Here, with respect to the double-ended stud 51, threads on the upper end and the lower end of the double-ended stud 51 are left-handed and right-handed, respectively, to prevent the threads of the stud and a fitting section of the base plate 40 from loosening during lifting.

Preferably, a top portion 521 of the upper sleeve 52 is a spherical projection, a bottom portion 12 of the top plate 10 is provided with a concave spherical recess 11, and the top portion 521 of the upper sleeve 52 and the concave spherical recess 11 of the top plate 10 vertically correspond to each other.

In particular, a radius of the concave spherical recess 11 of the top plate 10 is larger than a radius of the spherical projection of the top portion 521 of the upper sleeve 52.

Such configuration, on one hand, achieves horizontal limiting during lifting to prevent relative displacement between components in case of insufficient locking, and, on the other hand, achieves automatic alignment of the top plate during lifting to prevent the top plate from deviating from its original position after horizontal displacement.

The present invention also provides a weighing device, characterized in that the weighing device comprises a weighing module having a lifting assembly as described above.

According to the above description of the structure, the weighing module having the lifting assembly according to the present invention operates as follows.

Under typical circumstances, the upper sleeve 52 is retracted and the entire structure is almost identical to the original weighing module.

When lifting is required, the upper sleeve 52 is rotated upward until it is in contact with the top plate 10, and continues to rotate to achieve lifting. The rotation is further carried out until the inverted U-shaped plate 20 is in contact with the anti-overturn sleeve 80, thereby achieving locking.

After the lifting is completed, the upper sleeve 52 is retracted to constitute a typical weighing function.

According to the present invention, a weighing module 200 having a lifting assembly 50 is provided in which a set of lifting tools is placed in a horizontal pull rod mounting hole at a side edge of the inverted U-shaped plate 20. The weighing module 200 mainly comprises an upper structure, a lower structure, a middle structure, and a bearing for reducing friction, wherein the upper structure is inserted into a pull rod mounting hole and tightened by a nut. A ball head structure is provided at a bottom portion of the lower structure to ensure that when the top plate is inclined, the whole structure is still vertically moved upward when being lifted. An upper thread of the middle structure and an inner thread of the upper structure are relatively moved to realize lifting and falling.

The lifting function of the weighing module having a lifting assembly 50 is mainly realized by removing an original anti-overturn bolt on the basis of the conventional module and replacing the bolt with one double-ended stud 51 and one upper sleeve 52. Thus, the basic structure of the original module is still complete, but the lifting function is additionally added by the additional upper sleeve 52.

The weighing module having a lifting assembly according to the present invention organically integrates the lifting assembly with the module, and has the following characteristics:

1. the new product does not change the design of the original product, and thus can be used both for new projects and for retrofitting old customer sites.

2. the new product has a simple structure, and the relative movement between the upper sleeve and the double-ended stud is achieved by means of a thread fitting.

3. the upper sleeve and the top plate have an opposite spherical structure, one of which has a large radius and the other has a small radius, so that automatic alignment and horizontal limiting are achieved.

4. an upgrade structure divided into upper and lower parts is alternative;

5. the hexagonal head of the upper stud is designed to have a step and a step notch;

6. the hexagonal head of the lower stud is designed to have a notch and a threaded through-hole;

7. the upper and lower studs cooperate with each other, and are connected by a small bolt, and the hexagonal head of the bolt is received by the step notch of the upper stud, so that return movement of the upper sleeve is not affected;

8. when lifting is not required, the upper sleeve moves back to the hexagonal head of the stud, without affecting a typical metering performance of the module.

In summary, the present invention provides a weighing module having a lifting assembly and a weighing device comprising the same, and develops a set of components having a lifting function, the said set of components is organically integrated with the module for use as a whole in a mobile weighing system. The weighing module of the present invention can be used for new products processing and works at new customer sites.

Furthermore, since the components for the weighing module developed by the present invention do not make any change to the original weighing module, a new lifting function is achieved by replacing only one part, so that the components can also be used perfectly for retrofitting and upgrading of the old or conventional weighing systems. Meanwhile, the performance of the original weighing system is not changed.

Although specific implementations of the present invention have been described above, those skilled in the art should understand that these are merely examples, and the scope of protection of the present invention is defined by the appended claims. Various alterations or modifications to these implementations can be made by those skilled in the art without departing from the principle and essence of the present invention. However, these alterations and modifications all fall within the scope of protection of the present invention.

Reference signs list

Claims

A weighing module (200) having a lifting assembly (50) , said weighing module comprising a top plate (10) , an inverted U-shaped plate (20) with an upward opening, a sensor (30) , a base plate (40) , a lifting assembly (50) , and a bearing head (70) detachably connected to the top plate (10) , wherein an upper portion (201) of the inverted U-shaped plate (20) is connected to the top plate (10) , a fixed parallelogram leg (301) of the sensor (30) is fixed to the base plate (40) , and a movable parallelogram leg (302) of the sensor (30) is connected to the top plate (10) through the bearing head (70) ;

characterized in that the lifting assembly (50) comprises a one end portion (501) and a other end portion (502) , wherein, the one end portion (501) of the lifting assembly (50) passes through a lower portion (202) of the inverted U-shaped plate (20) and is fixed to the baseplate (40) , and the other end portion (502) of the lifting assembly (50) is arranged in the inverted U-shaped plate (20) and is located under the top plate (10) ;

and when the weighing module is in a lifting state, the other end portion (502) of the lifting assembly (50) is raised up until the top plate (10) is lifted, such that there is a spacing (a) between the top plate (10) and the bearing head (70) .
The weighing module having the lifting assembly (50) according to claim 1, characterized in that the one end portion (501) of the lifting assembly (50) comprises a double-ended stud (51) and the other end portion (502) of the lifting assembly (50) comprises an upper sleeve (52) , the lower portion (202) of the inverted U-shaped plate (20) is provided with a first mounting hole (203) in which an anti-overturn sleeve (80) is mounted, an upper end (517) of the double-ended stud (51) , is mounted in the anti-overturn sleeve (80) , and the upper sleeve (52) is mounted on a lower end (518) of the double-ended stud (51) .
The weighing module having the lifting assembly (50) according to claim 2, characterized in that the double-ended stud (51) has an integral structure.
The weighing module having a lifting assembly (50) according to claim 2, characterized in that the double-ended stud (51) comprises an upper stud (511) and a lower stud (512) , and the upper stud (511) and the lower stud (512) as upper and lower parts are integrated together.
The weighing module having the lifting assembly (50) according to claim 4, characterized in that the upper stud (511) is provided with an upper mounting seat (54) on which a first notch (513) and a first step (514) are provided, the lower stud (512) is provided with a lower mounting seat (56) on which a second notch (515) and a through-hole (516) are provided, the first step (514) cooperates with the second notch (515) , and the first notch (513) and the through-hole (516) are oppositely disposed and are connected and fixed through a connector (100) .
The weighing module having the lifting assembly (50) according to any one of claims 1-5, characterized in that the upper sleeve (52) and the upper stud (511) are connected by threads.
The weighing module having the lifting assembly (50) according to any one of claims 1-2, characterized in that a top portion (521) of the upper sleeve (52) is a spherical projection, a bottom portion (12) of the top plate (10) is provided with a concave spherical recess (11) , and the top portion (521) of the upper sleeve (52) and the concave spherical recess (11) of the top plate (10) vertically correspond to each other.
The weighing module having the lifting assembly (50) according to claim7, characterized in that a radius of the concave spherical recess (11) of the top plate (10) is larger than a radius of the spherical projection of the top portion (521) of the upper sleeve (52) .
The weighing module having the lifting assembly (50) according to claim 2, characterized in that threads on the upper end and the lower end of the double-ended stud (51) are left-handed and right-handed, respectively.
The weighing module have the lifting assembly (50) according to claim 1, characterized in that the weighing module (200) further comprises a rocker column (60) , wherein the rocker column (60) is connected to the bearing head (70) .
The weighing module have the lifting assembly (50) according to claim 10, characterized in that the rocker column (60) is further attached to the movable parallelogram leg (302) of the sensor (30) .
A weighing device, characterized in that the weighing device comprises the weighing module (200) having the lifting assembly (50) according to any one of claims 1 to 11.