CN114111979A - Feeding and weighing method in feeding of accurate hydraulic step-feeding material machine - Google Patents
Feeding and weighing method in feeding of accurate hydraulic step-feeding material machine Download PDFInfo
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- CN114111979A CN114111979A CN202111103912.8A CN202111103912A CN114111979A CN 114111979 A CN114111979 A CN 114111979A CN 202111103912 A CN202111103912 A CN 202111103912A CN 114111979 A CN114111979 A CN 114111979A
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- feeding
- forklift
- weighing
- safety grating
- weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
- G01G13/022—Material feeding devices
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a feeding and weighing method in feeding of an accurate hydraulic step-feeding material machine, which relates to the field of step-feeding materials and comprises the following steps: enabling the material machine to feed the material unit at a constant speed V; before the feeding container is emptied each time, recording the weight Wi and the time Ti at the moment when a shovel head of the forklift is ready for feeding, and recording the weight Wi and the corresponding weighing time Ti after feeding is finished; measuring the weight at the moment A to obtain the weight B, wherein A is more than Tn; so that during the period from time t0 to time a, the weight of the material supplied by the feeder is calculated by: sigmai[(Wi‑wi)+(Ti‑ti)V]-B. The invention can accurately realize the calculation of the feeding amount of the materials in the feeding process, and also counts the feeding amount in the feeding process, thereby having very high accuracy.
Description
Technical Field
The invention relates to the field of step feeding materials, in particular to a feeding and weighing method in feeding of an accurate hydraulic step feeding material machine.
Background
The hydraulic step feeding machine is used for feeding the biogas reaction tank, and has a weighing function under the condition of realizing the function of uniform discharging of the material, so as to monitor the single-day feeding amount of the gas making area.
Can increase weighing transducer on hydraulic pressure step feed material machine base and be used for the whole weight of real-time supervision, preliminary weighing scheme is: before the feeding system is operated, the storage bin of the stepping feeding machine is fully piled by a forklift, the weight is W1, then the feeding system works, the weight is W2 at any time point in the feeding process, and the fed amount at the time point is W1-W2.
However, the disadvantages of this preliminary solution are: the feeding is started after the feeding of the forklift is finished, so that the feeding time of the forklift needs to be calculated according to the production rhythm. But the forklift feeding only works immediately before the feeding system operates, and the effective time of the real work is the feeding time of the forklift. Therefore, the method causes low production efficiency, and feeding while feeding and continuous feeding cannot be realized.
In summary, under the situation of short production cycle, an effective solution is needed that can satisfy the situation that the forklift operator can feed the materials at any time according to the situation of the residual materials in the step-feeding material machine without affecting the weighing function of the step-feeding material machine under the situation that the feeding system continuously operates.
Disclosure of Invention
The invention aims to provide a feeding and weighing method in the feeding of an accurate hydraulic step-feeding material machine, so as to solve the problems in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a feeding and weighing method in feeding of an accurate hydraulic step-feeding material machine comprises the following steps:
s1: a weight sensor is arranged at the bottom of the feeding container, and a safety grating and a signal lamp are arranged at an opening at the top of the feeding container; the weight sensor, the safety grating and the signal lamp are automatically controlled by a PLC controller;
s2: feeding the feeding container for the first time by using a forklift;
s3: starting a feeding machine to feed the material unit at a constant speed V, wherein V represents feeding in unit time; in the subsequent steps, the feeder always keeps constant speed V operation;
s4: before each emptying of the feed container, the forklift is fed in the following manner: a shovel head of the forklift carries a material to shield a safety grating, a PLC (programmable logic controller) detects a shielding signal and then controls a weight sensor to weigh and record weight Wi and time Ti at the moment, after weighing is completed, the PLC sends a signal to enable a signal lamp to light up, a driver on the forklift pours the material into a feeding container after seeing that the signal lamp lights up, then withdraws the shovel head and leaves the safety grating, the safety grating detects that the shovel head leaves and sends a signal to the PLC, the PLC immediately controls the weight sensor to weigh and record weight Wi and corresponding weighing time Ti again, the signal lamp is turned off, and the system is restored; after n times of feeding, the PLC controller records Wi, Ti, Wi and Ti measured in each feeding process, wherein i is 1-n;
s5: at the moment A, the PLC controller controls the weight sensor to measure the weight to obtain B, wherein A is more than Tn;
s6: during the period from time t0 to time A, the weight of the material supplied by the feeder is calculated by the following formula:
∑i[(Wi-wi)+(Ti-ti)V]-B。
the signal lamp is set as a three-color signal lamp.
The top opening of the feeding container is set to be a rectangular opening, and the safety grating is arranged above one long strip of the rectangular opening.
The transmitting end and the receiving end of the safety grating are respectively fixed at two long end points of the top opening of the feeding container.
When the forklift is used for feeding, the feeding is always carried out above a forklift feeding area between the transmitting end and the receiving end of the safety grating.
The signal lamp is arranged outside the feeding area of the forklift and close to the safety grating.
The signal lamp is arranged above one width of the top opening of the feeding container.
In S1, an optical correlation switch is arranged in front of the safety grating; the optical correlation switch is arranged on a walking path of the forklift; when the shovel head of the forklift shields the safety grating, the front wheel of the forklift just shields the optical correlation switch.
In S4, the weight wi is measured on the premise that both the safety grating and the optical correlation switch are shielded.
In S4, the weight Wi is measured on the premise that both the safety grating and the optical correlation switch are unblocked.
Compared with the prior art, the method has the advantages that the calculation of the feeding amount of the materials in the feeding process can be accurately realized, the feeding amount in the feeding process is also counted, the accuracy is very high, the operation is simple, and the automation is high.
Drawings
FIG. 1 is a schematic view of a feeder of the present invention;
fig. 2 is a schematic view of the feeder of the present invention in use.
In the figure, 1, a feeding container, 2, a weight sensor, 3, a safety grating, 4, a signal lamp, 5 and an optical correlation switch.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 2, the invention relates to a feeding and weighing method in a feeding process of an accurate hydraulic step-feeding material machine, which comprises the following steps:
s1: a weight sensor 2 is arranged at the bottom of a feeding container 1, and a safety grating 3 and a signal lamp 4 are arranged at an opening at the top of the feeding container 1; the weight sensor 2, the safety grating 3 and the signal lamp 4 are automatically controlled by a PLC controller;
s2: feeding the feeding container 1 for the first time by using a forklift;
s3: starting a feeding machine to feed the material unit at a constant speed V, wherein V represents feeding in unit time; in the subsequent steps, the feeder always keeps constant speed V operation;
s4: before each emptying of the feed container 1, the forklift is fed in the following manner: a shovel head of the forklift carries a material to shield a safety grating 3, a PLC (programmable logic controller) detects a shielding signal and then controls a weight sensor 2 to weigh and record weight Wi and time Ti at the moment, after weighing is completed, the PLC sends a signal to enable a signal lamp 4 to light up, a driver on the forklift pours the material into a feeding container 1 after seeing that the signal lamp 4 lights up, then withdraws the shovel head and leaves the safety grating 3, the safety grating 3 detects that the shovel head leaves and sends a signal to the PLC, the PLC immediately controls the weight sensor 2 again to weigh and record weight Wi and corresponding weighing time Ti, the signal lamp 4 is closed, and the system is recovered; after n times of feeding, the PLC controller records Wi, Ti, Wi and Ti measured in each feeding process, wherein i is 1-n;
s5: at the moment A, the PLC controller controls the weight sensor 2 to measure the weight to obtain B, wherein A is more than Tn;
s6: during the period from time t0 to time A, the weight of the material supplied by the feeder is calculated by the following formula:
∑i[(Wi-wi)+(Ti-ti)V]-B。
the signal lamp 4 is set as a three-color signal lamp 4.
The top opening of the feeding container 1 is set as a rectangular opening, and the safety grating 3 is arranged above one long strip of the rectangular opening.
The transmitting end and the receiving end of the safety grating 3 are respectively fixed at two long end points of the top opening of the feeding container 1.
When the forklift is used for feeding, the feeding is always carried out above a forklift feeding area between the transmitting end and the receiving end of the safety grating 3.
The signal lamp 4 is arranged outside the feeding area of the forklift and close to the safety grating 3.
The signal lamp 4 is arranged above one width of the top opening of the feeding container 1.
In S1, an optical correlation switch 5 is further provided in front of the security grating 3; the optical correlation switch 5 is arranged on a walking path of the forklift; when the shovel head of the forklift shields the safety grating 3, the front wheel of the forklift just shields the optical correlation switch 5.
In S4, the weight wi is measured on the premise that both the security grating 3 and the optical correlation switch 5 are shielded.
In S4, the weight Wi is measured on the premise that both the safety grating 3 and the optical correlation switch 5 are unblocked.
The safety grating 3 and the optical correlation switch 5 are arranged, so that double insurance can be realized, on one hand, faults occurring in any one of the safety grating and the optical correlation switch can be checked, and on the other hand, shielding and shielding removal can be confirmed to be triggered by a forklift instead of other interferents.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. A feeding and weighing method in feeding of an accurate hydraulic step-feeding material machine is characterized by comprising the following steps:
s1: a weight sensor (2) is arranged at the bottom of the feeding container (1), and a safety grating (3) and a signal lamp (4) are arranged at an opening at the top of the feeding container (1); the weight sensor (2), the safety grating (3) and the signal lamp (4) are automatically controlled by a PLC controller;
s2: feeding the feeding container (1) for the first time by using a forklift;
s3: starting a feeding machine to feed the material unit at a constant speed V, wherein V represents feeding in unit time; in the subsequent steps, the feeder always keeps constant speed V operation;
s4: before each emptying of the feeding container (1), the forklift is fed in the following way: a shovel head of the forklift carries a material to shield a safety grating (3), a PLC (programmable logic controller) controls a weight sensor (2) to weigh and record weight Wi and time Ti at the moment after detecting a shielding signal, after weighing is completed, the PLC sends a signal to enable a signal lamp (4) to light up, a driver on the forklift pours the material into a feeding container (1) after seeing that the signal lamp (4) lights up, then withdraws the shovel head and leaves the safety grating (3), the safety grating (3) sends a signal to the PLC when detecting that the shovel head leaves, the PLC immediately controls the weight sensor (2) again to weigh and record the weight Wi and the corresponding weighing time Ti, the signal lamp (4) is turned off, and the system is restored; after n times of feeding, the PLC controller records Wi, Ti, Wi and Ti measured in each feeding process, wherein i is 1-n;
s5: at the moment A, the PLC controller controls the weight sensor (2) to measure the weight to obtain B, wherein A is more than Tn;
s6: during the period from time t0 to time A, the weight of the material supplied by the feeder is calculated by the following formula:
∑i[(Wi-wi)+(Ti-ti)V]-B。
2. a method for weighing a feed in a feed of a precision hydraulic step feeder according to claim 1, characterized in that the signal lamp (4) is set as a three-color signal lamp (4).
3. A method for weighing a feeding material in a feeding material of a precise hydraulic step feeder according to claim 1, characterized in that the top opening of the feeding container (1) is arranged as a rectangular opening, and the safety grating (3) is arranged above one length of the rectangular opening.
4. The feeding and weighing method of the accurate hydraulic stepping feeder according to claim 3, characterized in that the transmitting end and the receiving end of the safety grating (3) are respectively fixed at two long end points of the top opening of the feeding container (1).
5. The method for feeding and weighing of the accurate hydraulic stepping feeder according to claim 4, characterized in that when a forklift is used for feeding, the feeding is always carried out above a feeding area of the forklift between the transmitting end and the receiving end of the safety grating (3).
6. The method for weighing the feeding material in the feeding of the accurate hydraulic step-feeding material machine according to claim 5, wherein the signal lamp (4) is arranged outside the feeding area of the forklift and adjacent to the safety grating (3).
7. A method for weighing a feeding material in a feeding material of a precise hydraulic step feeder according to claim 6, characterized in that the signal lamp (4) is arranged above a width of the top opening of the feeding container (1).
8. The feeding and weighing method in the accurate hydraulic step feeder according to claim 1, characterized in that in S1, an optical correlation switch (5) is arranged in front of the safety grating (3); the optical correlation switch (5) is arranged on a walking path of the forklift; when the shovel head of the forklift shields the safety grating (3), the front wheel of the forklift just shields the optical correlation switch (5).
9. The feeding and weighing method of the accurate hydraulic step-feed feeder according to claim 8, wherein in S4, the premise of measuring the weight wi is that the safety grating (3) and the optical correlation switch (5) are shielded.
10. A method for weighing a feed in a feed of a precision hydraulic step feeder according to claim 8 or 9, characterized in that in S4, the weight Wi is measured on the premise that the safety grating (3) and the optical correlation switch (5) are both unblocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111103912.8A CN114111979A (en) | 2021-09-22 | 2021-09-22 | Feeding and weighing method in feeding of accurate hydraulic step-feeding material machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111103912.8A CN114111979A (en) | 2021-09-22 | 2021-09-22 | Feeding and weighing method in feeding of accurate hydraulic step-feeding material machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114111979A true CN114111979A (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111103912.8A Pending CN114111979A (en) | 2021-09-22 | 2021-09-22 | Feeding and weighing method in feeding of accurate hydraulic step-feeding material machine |
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| CN (1) | CN114111979A (en) |
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2021
- 2021-09-22 CN CN202111103912.8A patent/CN114111979A/en active Pending
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