CN-116873396-B - Self-locking discharging device and weighing equipment

Abstract

The application discloses a self-locking discharging device and weighing equipment, wherein the discharging device comprises a hopper, a door body and a first connecting piece which are hinged with the hopper, a second connecting piece which is hinged with the door body, a third connecting piece which is connected with the second connecting piece and the first connecting piece, and a driving assembly, and the door body, the first connecting piece, the second connecting piece and the third connecting piece form a connecting rod mechanism. The driving assembly comprises a driving piece and a transmission piece connected with the driving piece and the four-bar mechanism, wherein the driving piece is used for driving the door body to be opened, the transmission piece is provided with a rest station, the driving piece stops outputting power at the rest station, and the transmission piece can lock the door body even if the driving piece fails.

Inventors

• WANG DONGHAI
• WANG GUOZHONG
• SHI HONGWEN
• JIN XIHAN
• Tan chang
• MA CHAO
• WANG YAO

Assignees

• 株洲市杰曼科技有限公司

Dates

Publication Date

20260512

Application Date

20230817

Claims (9)

1. 1.A self-locking discharge apparatus comprising: A hopper; The door body is arranged at the outlet of the lower part of the hopper and hinged with the hopper; a first connecting piece hinged with the upper part of the hopper; one end of the second connecting piece is hinged with the door body; one end of the third connecting piece is hinged with one end of the second connecting piece far away from the door body, the other end of the third connecting piece is hinged with the first connecting piece, the door body, the first connecting piece, the second connecting piece and the third connecting piece form a four-bar linkage, the four-bar linkage is provided with a dead point position, and the door body is in a closed state at the dead point position; The driving assembly comprises a driving piece and a transmission piece connected with the driving piece and the four-bar mechanism, wherein the driving piece is used for driving the door body to be opened; Wherein the third connecting piece comprises an eccentric shaft, and the eccentric shaft comprises a first rotating shaft hinged with the first connecting piece and a second rotating shaft hinged with the second connecting piece.
2. 2. The discharge apparatus of claim 1, wherein the driving member includes a motor, the driving member includes a crank disposed on a rotation shaft of the motor and a main pushrod disposed at an end of the crank, and the main pushrod is connected to the four bar linkage.
3. 3. The discharge apparatus of claim 2 further comprising a secondary pushrod disposed on the first connector, the primary pushrod intersecting and abutting the secondary pushrod, the primary pushrod being positioned below the secondary pushrod.
4. 4. A discharge apparatus according to claim 3, wherein the main pushrod comprises a rod body and a roller sleeved on the outer periphery of the rod body, the roller being adapted to abut against the auxiliary pushrod.
5. 5. The discharge apparatus of claim 1, further comprising an elastic member coupled to the door body, wherein an elastic potential energy of the elastic member increases when the door body is opened.
6. 6. The discharge apparatus of claim 5, further comprising a first hinge seat disposed at an upper portion of the hopper, wherein the elastic member includes a tension spring for connecting the first connecting member and the first hinge seat.
7. 7. The discharge apparatus of claim 1 wherein the second connector is adjustable in length.
8. 8. The discharge apparatus of any one of claims 2-4, further comprising a ratchet mechanism coupled to the shaft of the motor.
9. 9. A weighing apparatus comprising a discharge device according to any one of claims 1 to 8.

Description

Self-locking discharging device and weighing equipment Technical Field The application relates to the field of metering and weighing, in particular to a self-locking discharging device and weighing equipment. Background In a rice-weighing scale, the weighing part is the core of the whole device. In the weighing part, the weighing hopper part is used for controlling the material flow of each door opening and closing. The whole door opening, door closing and retaining actions of the traditional measuring hopper part are all driven by an air cylinder. When the driving mode of the air cylinder is adopted, the whole movement process is from opening the door to keeping open, from keeping open to closing the door, and from closing the door to keeping closed, the whole process needs continuous output force, and in case of gas interruption, the door body can not be closed. Disclosure of Invention The application provides a self-locking discharging device and weighing equipment, which can solve the problem that an air cylinder valve is opened uncontrollably, so that a door body has a self-locking function. In order to achieve the above object, the present application provides a self-locking discharging device, comprising: A hopper; The door body is arranged at the outlet of the lower part of the hopper and hinged with the hopper; A first connecting piece hinged with the upper part of the hopper, One end of the second connecting piece is hinged with the door body, One end of the third connecting piece is hinged with one end of the second connecting piece far away from the door body, the other end of the third connecting piece is hinged with the first connecting piece, the door body, the first connecting piece and the second connecting piece form a four-bar mechanism, the four-bar mechanism is provided with a dead point position, and the door body is in a closed state at the dead point position; The driving assembly comprises a driving piece and a transmission piece connected with the driving piece and the four-bar mechanism, wherein the driving piece is used for driving the door body to be opened, the transmission piece is provided with a rest station, the driving piece stops outputting power at the rest station, and the door body is closed and locked by the transmission piece. In some embodiments, the driving member includes a motor, the transmission member includes a crank disposed on a rotation shaft of the motor and a main push rod disposed at the driving end, and the main push rod is connected to the four-bar linkage. In some embodiments, the discharge device further comprises a secondary pushrod disposed on the first connector, the primary pushrod intersecting and abutting the secondary pushrod, the primary pushrod being located below the secondary pushrod. In some embodiments, the main push rod comprises a rod body and a roller sleeved on the periphery of the rod body, and the roller is used for propping against the auxiliary push rod. In some embodiments, the third link comprises an eccentric shaft comprising a first shaft for articulating with the first link and a second shaft for articulating with the second link. In some embodiments, the discharge device further comprises an elastic member connected to the door body, and elastic potential energy of the elastic member increases when the door body is opened. In some embodiments, the discharging device further comprises a first hinge seat provided at an upper portion of the hopper, and the elastic member comprises a tension spring for connecting the first connecting member and the first hinge seat. In some embodiments, the second connector is adjustable in length. In some embodiments, the four bar linkage is provided with a dead point position in which the door is in a closed condition. The application also provides weighing equipment comprising the unloading device. The discharging device comprises a hopper, a door body and a first connecting piece which are hinged with the hopper, a second connecting piece which is hinged with the door body, a third connecting piece which is connected with the second connecting piece and the first connecting piece, and a driving assembly, wherein the door body, the first connecting piece, the second connecting piece and the third connecting piece form a connecting rod mechanism. The driving assembly comprises a driving piece and a transmission piece connected with the driving piece and the four-bar mechanism, wherein the driving piece is used for driving the door body to be opened, the transmission piece is provided with a rest station, the driving piece stops outputting power at the rest station, and the transmission piece can lock the door body even if the driving piece fails. Drawings FIG. 1 is a schematic view of a discharging device according to an embodiment of the present application; FIG. 2 is a schematic diagram of the embodiment of FIG. 1 with the discharge apparatus closed; FIG. 3 is a schematic diagram of the emb