CN111086788A

CN111086788A - Weighing hopper

Info

Publication number: CN111086788A
Application number: CN201911220134.3A
Authority: CN
Inventors: 李国宏; 王立明; 杨家乙; 宋海清; 彭华懿
Original assignee: Guangdong Toupack Intelligent Equipment Co ltd
Current assignee: Guangdong Toupack Intelligent Equipment Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-05-01

Abstract

The invention discloses a weighing hopper which comprises a support frame and a hopper shell, wherein a sensor assembly is arranged between the hopper shell and the support frame, a driving hopper door and a driven hopper door are respectively hinged on the hopper shell, and a driving mechanism capable of driving the driving hopper door and the driven hopper door to open or close a discharge hole of the hopper shell is arranged on the hopper shell; the driving mechanism comprises an air cylinder and a shifting plate which are respectively hinged to a hopper shell, a pull rod is hinged between the outer end of the shifting plate and a driving hopper door, a pin seat is arranged at a position, close to the outer end, of the shifting plate, an air cylinder shaft of the air cylinder is hinged to the pin seat, a connecting rod is hinged between the driving hopper door and a driven hopper door, and when the driving hopper door and the driven hopper door are in a closed state, a hinge point on the shifting plate and a hinge point on the pull rod are on the same straight line, so that a self-locking state limiting the driving hopper door from being opened outwards is formed.

Description

Weighing hopper

Technical Field

The invention particularly relates to a weighing hopper.

Background

Weighing hopper, be one kind and weigh and carry the container of carrying to material in the hopper, the hopper casing can have on general hopper, a hopper door for closing the hopper casing, the actuating mechanism that drive hopper door was opened or was closed and the weighing sensor who weighs to material in the hopper casing, the hopper door is under the closure condition, actuating mechanism needs to bear the weight of hopper casing material, after the live time has been long or actuating mechanism's driving piece breaks down, the state that can not tightly close can appear in the hopper door, lead to leaking the material, and conventional sensor adopts the fixed mode of multiple spot, because lateral stress can not be eliminated, lead to measurement accuracy error.

Therefore, the existing weighing hopper needs to be further improved.

Disclosure of Invention

Aiming at the defects in the prior art, the technical problems to be solved by the invention are as follows: the driving mechanism can realize self-locking under the closing state of the hopper door, the hopper door cannot be tightly closed when the driving piece is prevented from being in fault, and the measurement precision is improved.

A weighing hopper comprises a support frame and a hopper shell, wherein a sensor assembly is arranged between the hopper shell and the support frame, a driving hopper door and a driven hopper door are respectively hinged on the hopper shell, and a driving mechanism capable of driving the driving hopper door and the driven hopper door to open or close a discharge port of the hopper shell is arranged on the hopper shell;

the driving mechanism comprises an air cylinder and a shifting plate which are respectively hinged to a hopper shell, a pull rod is hinged between the outer end of the shifting plate and a driving hopper door, a pin seat is arranged at a position, close to the outer end, of the shifting plate, an air cylinder shaft of the air cylinder is hinged to the pin seat, a connecting rod is hinged between the driving hopper door and a driven hopper door, when the driving hopper door and the driven hopper door are in a closed state, a hinge point on the shifting plate and a hinge point on the pull rod are on the same straight line, a self-locking state limiting the driving hopper door to be opened outwards is formed, and the connecting rod forms a fulcrum limiting the driven hopper door to be turned outwards under the fixed state of the driving hopper door.

Preferably, a spring hanging pin is arranged on the driving hopper door and close to the connecting rod, and a tension spring is arranged between the inner end of the shifting plate piece and the spring hanging pin.

Preferably, a limit column for preventing the shifting plate from exceeding the stroke when the shifting plate is turned outwards is arranged on the driving hopper door.

Further, the sensor assembly comprises a plurality of weighing sensors uniformly distributed on the supporting frame, and a sensor connecting piece is arranged between each weighing sensor and the corresponding hopper shell.

Preferably, one of the sensor connecting pieces is of a column type structure, and the other sensor connecting pieces are of a steel ball structure.

In summary, compared with the prior art, the invention has the beneficial effects that:

according to the invention, the shifting plate piece is driven to rotate by the air cylinder, so that the driving hopper door is driven to open or close by the pull rod, the driven hopper door and the driving hopper door are synchronously opened or closed by the connecting rod when the driving hopper door is opened or closed, when the driving hopper door and the driven hopper door are in a closed state, the hinge point on the shifting plate piece and the hinge point on the pull rod are on the same straight line, a self-locking state for limiting the driving hopper door to be opened outwards is formed, the driving hopper door and the driven hopper door can not be tightly closed due to the failure of the air cylinder is effectively prevented, the sensor assembly and the hopper shell are in a single-point fixed and multi-point floating connection mode, the lateral stress is effectively eliminated, and the measurement precision is improved.

Drawings

FIG. 1 is a perspective view of one embodiment of the present invention;

fig. 2 is a second perspective view (a state of hiding the supporting frame) of the present invention.

Detailed Description

The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings:

as shown in fig. 1 to 2, an embodiment of the present invention preferably provides a weighing hopper, which includes a supporting frame 1 and a hopper housing 10, wherein a sensor assembly 2 is disposed between the hopper housing 10 and the supporting frame 1, a driving hopper door 11 and a driven hopper door 12 are respectively hinged on the hopper housing 10, and a driving mechanism 3 capable of driving the driving hopper door 11 and the driven hopper door 12 to open or close a discharge port of the hopper housing 10 is disposed on the hopper housing 10;

the driving mechanism 3 comprises an air cylinder 30 and a shifting plate 31 which are respectively hinged on the hopper shell 10, a pull rod 32 is hinged between the outer end of the shifting plate 31 and the driving hopper door 11, a pin seat 33 is arranged on the shifting plate 31 near the outer end, an air cylinder shaft of the air cylinder 30 is hinged with the pin seat 33, a connecting rod 34 is hinged between the driving hopper door 11 and the driven hopper door 12, when the driving hopper door 11 and the driven hopper door 12 are in a closed state, the hinge point on the shifting plate 31 is on the same straight line with the hinge point on the pull rod 32 to form a self-locking state for limiting the driving hopper door 11 to be opened outwards, the connecting rod 34 forms a fulcrum for limiting the driven hopper door 12 to be turned outwards when the driving hopper door 11 and the driven hopper door 12 need to be opened, the shifting plate 31 is driven to be turned outwards by the air cylinder 30, so that the driving hopper door 11 is driven to be turned outwards by the pull rod 32, connecting rod 34 drives driven hopper door 12 and opens in step when initiative hopper door 11 outwards overturns, when needs close initiative hopper door 11 and driven hopper door 12, dial plate 31 internal rotation through the drive of cylinder 30, thereby cross pull rod 32 and drive initiative hopper door 11 and inwards overturn, connecting rod 34 drives driven hopper door 12 and synchronously closes when initiative hopper door 11 inwards overturns, when initiative hopper door 11 and driven hopper door 12 are in the closed condition, on the same straight line of hinge point on the hinge point on dialling plate 31 and pull rod 32, form a fulcrum that hinders initiative hopper door 11 and outwards overturns, connecting rod 34 forms the fulcrum of restricting driven hopper door 12 and outwards overturning under the initiative hopper door 11 fixed state simultaneously, and then realize the auto-lock state.

According to the invention, the spring hanging pin 35 is arranged on the driving hopper door 11 close to the connecting rod 34, the tension spring 36 is arranged between the inner end of the dial plate part 31 and the spring hanging pin 35, the driving hopper door 11 is more smooth and stable when being closed through the tension spring 36, and meanwhile, the closing force is improved.

According to the invention, the driving hopper door 11 is provided with the limiting column 37 for preventing the shifting plate piece 31 from exceeding the stroke when turning outwards, and when the driving hopper door 11 and the driven hopper door 12 are in a closed state through the limiting column 37, the hinge point on the shifting plate piece 31 and the hinge point on the pull rod 32 can be positioned on the same straight line, so that a self-locking state for preventing the driving hopper door 11 from opening outwards is formed.

The sensor assembly 2 comprises a plurality of weighing sensors 20 which are uniformly distributed on a support frame, a sensor connecting piece 21 is arranged between each weighing sensor 20 and the hopper shell 10, and the weighing force of the hopper shell 10 can be uniform and more accurate through the uniformly distributed weighing sensors 20.

According to the invention, one sensor connecting piece 21 adopts a column type structure, and the other sensor connecting pieces 21 adopt steel ball structures, so that the lateral stress generated during weighing is effectively solved and the weighing precision is effectively improved by adopting a single-point fixing and multi-point floating connection mode.

While there have been shown and described the fundamental principles and principal features of the invention and advantages thereof, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are given by way of illustration of the principles of the invention, but is susceptible to various changes and modifications without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a hopper weighs, includes support frame and hopper shell, its characterized in that: a sensor assembly is arranged between the hopper shell and the supporting frame, a driving hopper door and a driven hopper door are respectively hinged on the hopper shell, and a driving mechanism capable of driving the driving hopper door and the driven hopper door to open or close a discharge port of the hopper shell is arranged on the hopper shell;

2. A weighing hopper as claimed in claim 1 wherein: a spring hanging pin is arranged on the driving hopper door and close to the connecting rod, and a tension spring is arranged between the inner end of the shifting plate piece and the spring hanging pin.

3. A weighing hopper according to claim 2 wherein: and the driving hopper door is provided with a limiting column for preventing the shifting plate from exceeding the stroke when being overturned outwards.

4. A weighing hopper according to any one of claims 1 to 3 wherein: the sensor assembly comprises a plurality of weighing sensors uniformly distributed on the support frame, and a sensor connecting piece is arranged between each weighing sensor and the corresponding hopper shell.

5. A weighing hopper according to claim 4, wherein: one of the sensor connecting pieces adopts a column type structure, and the other sensor connecting pieces adopt steel ball structures.