CN2738219Y

CN2738219Y - Loader electronic weighing system

Info

Publication number: CN2738219Y
Application number: CN 200420091615
Authority: CN
Inventors: 徐海贤; 蒋漪泉; 杜占江; 吴任天
Original assignee: Liuzhou Aidi Test & Control Technology Co Ltd; Scientific & Technological Inst Liuzhou Railway Bureau
Current assignee: Institute of science and technology of Nanning Railway Bureau; Liuzhou Aidi Test & Control Technology Co., Ltd.
Priority date: 2004-09-15
Filing date: 2004-09-15
Publication date: 2005-11-02
Anticipated expiration: 2014-09-15

Abstract

The utility model relates to a loader electronic balance weighing system, compising an automatic measuring and controlling unit which is composed of a lifting force measuring sensor group and a bucket position measuring switch group, a signal processing circuit, an embedded computer with weighing software, a loading quality information management system software and a power supply. The lifting force measuring sensor group is composed of a left lifting arm sensor and a right lifting arm sensor which are installed on a pin shaft positioned at the combination portion of a bucket, a left lifting arm and a right lifting arm; a bucket acceleration sensor which is installed on the bucket of the loader; and an overturn arm sensor which is installed on a pin shaft positioned at the combination portion of the bucket and an overturn arm. The output ends of the lifting force measuring sensor group and the bucket position measuring switch group are mutually connected with the input ends of the signal processing circuit; the output ends of the signal processing circuit are mutually connected with the embedded computer with weighing software through an A/D data converting module and an I/O port. The weighing system structure has reasonable distribution, scientific metering method, higher weighing accuracy under the dynamic environment, firm structure and convenient system operation and maintenance, and is suitable for bad working environment.

Description

The shovel loader electronic weighing system

Technical field

The utility model relates to a kind of shovel loader weighing system, particularly a kind of shovel loader electronic weighing system.

Background technology

The shovel loader electronic scales all utilizes hydrostatic transmission to measure both at home and abroad, for example number of patent application is that 9410411.X " metering method of shovel loader charging capacity and device thereof " promptly is one of them, this kind metering method " on the in-line of the boom cylinder by being loaded on loading shovel, the pressure transducer that is used to measure liquid pressure measures the transducing signal of contained quality on the scraper bowl, receive above-mentioned transducing signal and change, demonstrate contained quality by measuring display instrument.", this measuring method can be because the wearing and tearing of oily temperature, interior friction, pollution, sealing gasket and the dynamic factors of carrying out weighing in advancing, and causes that measuring accuracy is not high, poor reliability and can't promoting in batches.

The utility model content

The technical problems to be solved in the utility model is, the existing existing measuring accuracy of shovel loader electronic scales that adopts the hydraulic sensing mode to measure is not high, the problem of poor reliability, provide a kind of employing lifting force sensor to monitor automatically, and guarantee under dynamic environment, to obtain the shovel loader electronic weighing system of higher weighing accuracy.

The technical scheme that solves its above-mentioned technical matters is: a kind of shovel loader electronic weighing system, this system comprises sensor groups, the automatic measurement and control unit, signal processing circuit, computing machine and disposal system, power supply, it is characterized in that: described sensor groups is a lifting force survey sensor group, described automatic measurement and control unit is a position of bucket measuring switch group, described computing machine and disposal system are the embedded computer and the loading mass information management system software of band weighing software, this lifting force survey sensor group is by being installed in a scraper bowl and a left side, left side on the bearing pin of right lift arm junction, right lift arm sensor, be installed in the scraper bowl acceleration transducer on the loading shovel, the flip-arm sensor that is installed on scraper bowl and the flip-arm junction bearing pin is formed, described automatic measurement and control unit be by be installed in before the pilothouse on the upright pole 1. number near switch, 2. number near switch, be installed in flip-arm oil cylinder top 3. number near switch, 4. number the position of bucket measuring switch group of forming near switch, each sensor output terminal of lifting force survey sensor group, each output terminal of the position of bucket measuring switch group of automatic measurement and control unit links to each other with the signal processing circuit input end respectively, the output terminal of signal processing circuit links to each other display screen by A/D data conversion module and I/O mouth with the input end of embedded computer, keyboard, CF card and adapter, hummer connects with computing machine respectively.

Because adopt said structure, the beneficial effect that the shovel loader electronic weighing system of the utility model has is:

1, the weighing system structure and distribute rationally, metering method science, degree of accuracy height:

The shovel loader electronic weighing system of the utility model is measured the quality of scraper bowl content material by the lifting force of direct measurement loading shovel, that is: lifting force survey sensor group a---left side is installed on the bearing pin of scraper bowl and lift arm junction, the left and right sides, right lift arm sensor, the flip-arm sensor is installed on scraper bowl and flip-arm junction bearing pin, sensor output signal is to signal processing circuit, embedded computer is imported in conversion through A/D after signal processing circuit amplification and filtering, calculate the weight of material that loading shovel shovels again according to the relational expression of lifting force and scraper bowl content material quality, sensor is not contained on the hydraulic line of shovel loader, weighing result is not subjected to the oil temperature, interior friction, pollute, the influence of sealing gasket wearing and tearing, and, the dynamic factors of having carried out weighing in having considered to advance, utilize embedded computer to detect automatically and programmed control, guarantee under dynamic environment, to obtain higher weighing accuracy, be generally 0.5%.

2, easy to operate, directly perceived:

The main frame of embedded computer and display screen and keyboard are positioned at simultaneously and are contained on the preceding weigher panel of pilothouse (referring to Fig. 4), button on the keyboard has: zero clearing, remove the peel, weigh, operator, wagon number, the name of an article, date setting, time are provided with and 0,1～9 numerical key acknowledgement key, function key; Data presented has loaded-up condition (effective/invalid), the tipping bucket position (extremely/preposition), the lift arm position (on weighing a little/below/position), the lorry numbering, vehicle, the tote name of an article, this scraper bowl weight, cumulative weight, the entrucking surplus, add up to struggle against number, the lorry burden rating, overload capacity, the operator, order of classes or grades at school, time etc., easy to operate, the result comes into plain view, clear display under high light, just can judge whether overload in the course of work, as the warning in time that overloads, avoid overload, all entrucking data all are recorded in the CF card, conveniently transcribe in the loading mass information management system by the CF card.

3, firm in structure, be fit to abominable working environment, the lifting force survey sensor that the utility model adopts belongs to the axial pin type LOAD CELLS, has good shock proof performance, and anti-power frequency/Radio frequency interference (RFI) ability is strong, and working service is convenient and simple.

4, adopt the loading mass information management system to set up and load database of record and management software thereof, can store hosting Information, as license number, operator, order of classes or grades at school, time, title material, actual weight of load etc., convenient inquiry afterwards, statistics raises the management level.

Below, the technical characterictic to shovel loader electronic weighing system of the present utility model is further described in conjunction with the accompanying drawings and embodiments.

Description of drawings:

Fig. 1: the shovel loader electronic weighing system overall installation distribution schematic diagram of the utility model;

Fig. 2: the shovel loader electronic weighing system theory diagram of the utility model;

Fig. 3: the shovel loader electronic weighing system electronics wiring synoptic diagram of the utility model;

Fig. 4: the shovel loader electronic weighing system metering of the utility model is the display screen and the panel synoptic diagram (among the figure, fuzzy font is partly represented variable) of display as a result.

Among Fig. 1:

11-left side lift arm sensor, the 2-scraper bowl, 3-scraper bowl acceleration transducer,

4-flip-arm sensor, the 5-flip-arm, the right lift arm of 6-shovel loader, the 7-hydraulic cylinder,

8-is 3. number near switch, and 9-is 4. number near switch, and 10-is 1. number near switch, and 11-is 2. number near switch, 12-bearing circle, 13-electronic weighing system main frame and display, 14-pilothouse, the terminal box of 15-signal processing circuit III and automatic measurement and control unit II.

Embodiment:

A kind of shovel loader electronic scale weighing system.This system comprises sensor groups, automatic measurement and control unit, signal processing circuit, computing machine and disposal system, power supply X, described sensor groups is lifting force survey sensor group I, described automatic measurement and control unit II is a position of bucket measuring switch group, described computing machine and disposal system are the embedded computer V and the loading mass information management system software VI of band weighing software, and this lifting force survey sensor group I is by the left and right lift arm sensor 1 on the bearing pin that is installed in scraper bowl 2 and lift arm junction, the left and right sides ₁, 1 ₂(1 ₂Do not show among the figure), be installed in the scraper bowl acceleration transducer 3 on loading shovel 2 optional positions, the flip-arm sensor 4 that is installed on scraper bowl and the flip-arm junction bearing pin is formed, described automatic measurement and control unit II be by be installed in be used on the upright pole before the pilothouse to detect the lift arm position 1. number near switch 10,2. number near switch 11, be installed in flip-arm hydraulic jack top 3. number near switch 8,4. number the position of bucket measuring switch group of forming near switch 9, each sensor output terminal of lifting force survey sensor group I, each output terminal of the position of bucket measuring switch group of automatic measurement and control unit II links to each other with signal processing circuit III input end respectively, the output terminal of signal processing circuit III links to each other display screen VII by A/D data conversion module and I/O mouth IV with the input end of embedded computer V, keyboard VIII, CF card and adapter IX, hummer XI connects with computing machine V respectively.

Be installed in the left and right lift arm sensor 1 on the bearing pin of scraper bowl and lift arm junction, the left and right sides ₁, 1 ₂Be contained in the flip-arm sensor 4 on scraper bowl and the flip-arm junction bearing pin, all adopt the shearing-force type sensor---the axial pin type LOAD CELLS, the scraper bowl acceleration transducer 3 that is installed on the loading shovel 2 adopts conventional acceleration transducer, it is preceding 1. to be installed in the upright pole of pilothouse, 2. number near switch, be installed in flip-arm hydraulic jack top 3., 4. number be conventional near switch near switch, signal processing circuit III is accurate amplification, filtering circuit, A/D data conversion module and I/O mouth IV adopt general analog to digital conversion integrated package and I/O integrated package.

Shovel loader weigher supervisory routine interface by loading mass information management system software VI control in this weighing system comprises:

A, set up database: the content in the CF card is all read in the database, and form is identical,

B, query function: qualifiedly all tabulate,

Condition: order of classes or grades at school AND date, license number, driver AND date,

C, statistical function: weight accumulative total, unit is kg,

Statistics: order of classes or grades at school AND date, order of classes or grades at school, date, name of an article AND date,

D, name of an article storehouse are set up and are revised: need by each station, set up name of an article storehouse, and deposit in the CF card; Have and add and modify feature,

E, help: the use of management software and method of operating.

Name of an article storehouse in the shovel loader weigher program of this system is by generating on arbitrary the personal computer that supervisory routine is installed, deposit in the CF card, after the CF card inserts shovel loader electronic scales main frame, press acknowledgement key, read in and be kept in the embedded computer by the CF card, name of an article storehouse needs by each station adds and modify feature.

Claims

1, a kind of shovel loader electronic weighing system, this system comprises sensor groups, the automatic measurement and control unit, signal processing circuit, computing machine and disposal system, power supply (X), it is characterized in that: described sensor groups is a lifting force survey sensor group (I), described automatic measurement and control unit (II) is a position of bucket measuring switch group, described computing machine and disposal system are the embedded computer (V) and the loading mass information management system software (VI) of band weighing software, this lifting force survey sensor group (I) is by the left side on the bearing pin that is installed in scraper bowl (2) and lift arm junction, the left and right sides, right lift arm sensor (11), (12), be installed in the scraper bowl acceleration transducer (3) on the loading shovel (2), the flip-arm sensor (4) that is installed on scraper bowl and the flip-arm junction bearing pin is formed, described automatic measurement and control unit (II) be by be installed in before the pilothouse on the upright pole 1. number near switch (10), 2. number near switch (11), be installed in flip-arm oil cylinder top 3. number near switch (8), 4. number the position of bucket measuring switch group of forming near switch (9), each sensor output terminal of lifting force survey sensor group (I), each output terminal of the position of bucket measuring switch group of automatic measurement and control unit (II) links to each other with signal processing circuit (III) input end respectively, the output terminal of signal processing circuit (III) links to each other display screen (VII) by A/D data conversion module and I/O mouth (IV) with the input end of embedded computer (V), keyboard (VIII), CF card and adapter (IX) connect with computing machine (V) respectively.