High-capacity weighing module

Patent metadata

Field	Value
Publication number	US-11029192-B2
Application number	US-201916564191-A
Country	US
Kind code	B2
Filing date	Sep 9, 2019
Priority date	Sep 10, 2018
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A high-capacity weighing module has a top plate weldment (10), a bottom plate weldment (30) and a pressure-bearing assembly (20) that is between the top and bottom plate weldments. Motion between the respective top and bottom plate weldments is restricted. This structure aids in easy installation and replacement of a sensor, and integrates the functions of anti-overturning and 360° inspection, and bottom stop. This makes the weighing module much more convenient to install than a conventional high-capacity module, and has a better safety function. The weighing module has advantage in terms of a simplified product structure, reduced cost of manufacture and maintenance, uncomplicated installation procedure, and higher safety and protection.

First claim

What is claimed is:

1. A module for weighing, comprising:
a top plate weldment, having a cavity structure on a front side thereof;
a bottom plate weldment, positioned such that the bottom plate weldment forms a chamber that is open on a front side with the cavity structure;
a pressure-bearing assembly, fixed between the respective top and bottom plate weldments in the chamber, the pressure-bearing assembly comprising;
an upper pressure-bearing head,
a lower pressure-bearing head; and
a sensor, positioned such that the upper pressure-bearing head is mounted at an upper end of the sensor and the lower pressure-bearing head is mounted at a lower end of the sensor; and

at least one of the following:
at least two top-plate locating pins, provided on an inner top wall face of the cavity structure, with an upper end of the upper pressure-bearing head is inserted between the top-plate locating pins, or
at least two bottom-plate locating pins, provided in the chamber at a position corresponding to an upper end face of the bottom plate weldment, with a lower end of the lower pressure-bearing head inserted between the bottom-plate locating pins.

2. The module of claim 1 , further comprising:
at least two means for restricting movement, mounted between a lower end face of the top plate weldment and an upper end face of the bottom plate weldment.

3. The module of claim 1 , further comprising:
a first pin fixing bolt and a first pin that mounts an upper end of the upper pressure-bearing head to an inner top wall face of the cavity structure; and
a second pin fixing bolt and a second pin that mounts a lower end of the lower pressure-bearing head, located in the cavity structure, to the upper end face of the bottom plate weldment.

4. The module of claim 2 , wherein:
each of means for restricting movement comprises a bolt seat that is fixed to the bottom plate weldment and a bolt that is connected to the bolt seat by means of threads; and
a horizontal limiting hole is provided at a bottom end of the top plate weldment, so the bolt seat cooperates with the horizontal limiting hole to realize 360° horizontal limiting.

5. The module of claim 4 , further comprising:
a flat washer, located between the bolt seat and the bolt.

6. The module of claim 1 , further comprising:
a middle plate at the bottom of the top plate weldment; with a gap provided between a lower end face of the middle plate and the upper end face of the bottom plate weldment.

7. The module of claim 1 , further comprising:
a hydraulic lifting opening, located upward from a bottom edge of a rear side of the cavity structure.

8. The module of claim 2 , further comprising:
a first pin fixing bolt and a first pin that mounts an upper end of the upper pressure-bearing head to an inner top wall face of the cavity structure; and
a second pin fixing bolt and a second pin that mounts a lower end of the lower pressure-bearing head, located in the cavity structure, to the upper end face of the bottom plate weldment.

9. The module of claim 3 , further comprising:
a middle plate at the bottom of the top plate weldment; with a gap provided between a lower end face of the middle plate and the upper end face of the bottom plate weldment.

10. The module of claim 2 , further comprising:
a middle plate at the bottom of the top plate weldment; with a gap provided between a lower end face of the middle plate and the upper end face of the bottom plate weldment.

11. The module of claim 5 , further comprising:
a middle plate at the bottom of the top plate weldment; with a gap provided between a lower end face of the middle plate and the upper end face of the bottom plate weldment.

12. The module of claim 6 , further comprising:
a hydraulic lifting opening, located upward from a bottom edge of a rear side of the cavity structure.

13. The module of claim 3 , further comprising:
a hydraulic lifting opening, located upward from a bottom edge of a rear side of the cavity structure.

14. The module of claim 2 , further comprising:
a hydraulic lifting opening, located upward from a bottom edge of a rear side of the cavity structure.

15. The module of claim 5 , further comprising:
a hydraulic lifting opening, located upward from a bottom edge of a rear side of the cavity structure.

16. The module of claim 11 , further comprising:
a hydraulic lifting opening, located upward from a bottom edge of a rear side of the cavity structure.

Assignees

• Mettler Toledo Changzhou Prec Instruments Co Ltd
• Mettler Toledo Changzhou Measurement Tech Co Ltd
• Mettler Toledo Int Trading Shanghai Co Ltd

Inventors

• Shrestha Rabin
• Leahy Tom
• Zhang Ping
• Muranyi Ferenc

Classifications

• G01G21/23 Primary

  Support or suspension of weighing platforms (G01G21/24 takes precedence) · CPC title

• G01G3/12

  wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing · CPC title

• G01G21/24 Primary

  Guides or linkages for ensuring parallel motion of the weigh-pans · CPC title

• G01G19/22 Primary

  for apportioning materials by weighing prior to mixing them (ratio regulation G05D11/00) · CPC title