CN203411294U - Forklift for measuring weight of cargoes - Google Patents
Forklift for measuring weight of cargoes Download PDFInfo
- Publication number
- CN203411294U CN203411294U CN201320473980.8U CN201320473980U CN203411294U CN 203411294 U CN203411294 U CN 203411294U CN 201320473980 U CN201320473980 U CN 201320473980U CN 203411294 U CN203411294 U CN 203411294U
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- oil
- fork truck
- lift
- pressure sensor
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- 239000003921 oil Substances 0.000 claims abstract description 125
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 10
- 238000005303 weighing Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000008092 positive effect Effects 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses a forklift for measuring weight of cargoes. The forklift comprises a weight detection unit, a control unit and a display, wherein the weight detection unit comprises an oil pump, a valve group, a lifting cylinder and an oil pressure sensor; the oil pump, the valve group and the lifting cylinder are sequentially connected through a lifting oil way; the oil pressure sensor is arranged in the lifting oil way; the oil pressure sensor, the control unit and the display are sequentially connected through a data line; the oil pump transmits hydraulic oil to the lifting cylinder through the lifting oil way; an oil pressure signal in the lifting cylinder is detected through the oil pressure sensor and is converted into a weight signal through the control unit, and a detection result is transmitted to the display. According to the forklift for measuring weight of cargoes, the reliability of a weighing function of the forklift is improved, the weighing function of the forklift is expanded, the application safety of the forklift is improved, and the forklift has positive effects on a revolution of managing the forklift, analyzing a forklift accident and promoting a forklift transport technology.
Description
Technical field
The utility model relates to a kind of Weight-measuring device, relates in particular to a kind of fork truck that measures cargo weight.
Background technology
Fork truck belongs to a kind of of industrial vehicle, and it,, for carrying and handling goods, is widely used in goods yard, harbour, warehouse, factory etc.Fork truck can be divided into by structural shape: counterbalanced lift truck, lift truck with straddle outeriggers, carrier-and-stacker, side fork lift truck and driverless operation fork truck.
In the time need to measuring the weight of goods that fork truck hoists, on the fixed end of the chain that hoists of fork truck, sensitive member is installed, utilize the enhanced feature of fork truck, in cargo lifting process, measure the weight of goods; Be arranged on the sensitive member hoisting on chain fixed end, need to by wire, the force signal recording be sent on the gauge panel being arranged on operator's compartment, owing to being subject to, forklift door frame leans forward this technology and the interference of hypsokinesis, and wire rocks easily broken, causes fault; In addition, sensor is directly installed on stressed chain, impacts larger.
Utility model content
The utility model, for solving the poor problem of existing fork truck existence and stability when measuring cargo weight, provides a kind of fork truck that measures cargo weight;
The technical solution of the utility model is as follows;
Measure a fork truck for cargo weight,
Described fork truck comprises weight detecting unit, control unit 7 and telltale 5;
Described weight detecting unit comprises oil pump 1, valving 2, lift oil tank 3 and oil pressure sensor 4; Described oil pump 1, valving 2, lift oil tank 3 connect successively by the oil circuit that hoists; Described lift oil tank 3 is ram cylinder, described in described oil pressure sensor 4 is arranged on, hoists in oil circuit;
Described oil pressure sensor 4, control unit 7 and telltale 5 connect successively by data line;
Described oil pump 1 transfers to described lift oil tank 3 by the oil circuit that hoists described in hydraulic oil edge, the oil pressure pressure signal detecting in described lift oil tank 3 by described oil pressure sensor 4, by described control unit 7, oil pressure pressure signal is converted to weight signal, and testing result is transferred to described telltale 5.
Between described lift oil tank 3 and oil sources, be provided with oil return circuit; Described valving 2 is multiway valve; Described in being arranged on, described multiway valve hoists in oil circuit and oil return circuit, the switch of hoist described in control oil circuit and oil return circuit;
Described valving 2 is multiway valve; Described in being arranged on, described multiway valve hoists in oil circuit and oil return circuit;
Described oil pressure sensor 4 is arranged on hoisting in oil circuit between described multiway valve and lift oil tank 3.
In concrete enforcement, the multiway valve exit hoisting in oil circuit described in described oil pressure sensor 4 is arranged on, the benefit being arranged on is herein: oil pressure sensor 4 is the shortest to the wiring distance of control unit 7.
After multiway valve is closed, lift oil tank 3 is to forming airtight hydraulic oil container between multiway valve, and according to Principles of Statics, the pressure values that now oil pressure sensor 4 records, is the pressure values of lift oil tank 3.
Hydraulic oil pressure higher limit in described lift oil tank 3 is 5～40Mpa;
The check weighing scope of described fork truck is 0.25～80 ton.
The cylinder diameter of lift oil tank 3 has determined its lifting weight, and the movement length of piston rod has determined its lift height.The hoisting force of the pressure=hydraulic ram of the sectional area * hydraulic oil of lift oil tank, lift oil tank sectional area=3.14 * (cylinder diameter * cylinder diameter)/4.
Described fork truck also comprises warning device 6, for the detection that overloads;
Described warning device 6 is electrically connected to the signal output part of described control unit 7, and described warning device 6 is buzzer phone or LED luminous component.
The fuel injection pressure signal that control unit 7 records oil pressure sensor 4 is converted to cargo weight value, by control unit 7, carry out logic judgement, by the cargo weight result and the preset value comparison that convert at every turn, if surpass preset value, warning device 6 is reported to the police by flicker or vocal technique; If be less than preset value, by telltale 5, show the weight of goods.
Described fork truck also comprises data output interface 8;
Described data output interface 8 is connected with the data output end of described control unit 7;
By data output interface 8, can export easily the situation of recent forklift lifting cargo weight, when fork truck has an accident, the data of the handling goods of output have the purposes of fork truck " black box ", for the cause of analysis accident, have important effect.
In concrete enforcement, described data output interface 8 is USB interface.
Described control unit 7 is central process unit.
The function of control unit 7 is:
1) fuel injection pressure signal detecting is converted into the weight of goods through control unit 7; The formula adopting is:
The sectional area of cargo weight=oil pressure pressure * lift oil tank, oil pressure pressure records by described oil pressure sensor 4;
2) by summation circuit, the cargo weight at every turn recording is added up, obtain measurement number of times in certain period and the goods total weight of cumulative operation.
3) by decision circuit, judge, whether cargo weight surpasses the predefined gravimetric value that hoists;
4) detecting information is preserved, supported data output;
In concrete enforcement, the IC chip that described control unit 7 forms for micro controller system, it comprises computing circuit and decision circuit; The signal input part of described computing circuit and decision circuit is connected with the signal output part of described oil pressure sensor 4 respectively, and the signal output part of described computing circuit is connected with described telltale 5; The signal output part of described decision circuit is connected with warning device 6.
Described fork truck is counterbalanced lift truck, any one in lift truck with straddle outeriggers, carrier-and-stacker, side fork lift truck and driverless operation fork truck.
Principle of work of the present utility model is: in the hydraulic efficiency pressure system that hoists of common fork truck, access an oil pressure sensor 4, and by electron steering instrument, oil pressure pressure signal is converted into gravimetric value and shows, utilize this device can measure exactly the weight that fork truck forks goods; And will within a period of time, the cargo weight measuring and number of times be added up and be shown respectively, detailed process is:
The pressure signal of the hydraulic oil in the hydraulic lifting oil cylinder 3 that oil pressure sensor 4 measures, and pressure signal is sent to control unit 7, by control unit 7 pressure signal, be converted into the total weight of weight signal, statistical measurement number of times and the accumulative total measurement of goods, by telltale 5, show, telltale 5 can show respectively real-time measurement cargo weight value, its unit is kilogram to represent with kg; It is number of times that accumulative total is measured number of times ，Qi unit, with n, represents; It is ton that accumulative total is measured gravimetric value ，Qi unit, with t, represents.When cargo weight surpasses the rated load weight of fork truck, by warning device 6, report to the police; In the time the take off data completing need to being exported, can data be exported by data output interface 8.
Compared with prior art, the utility model is arranged on oil pressure sensor in hydraulic oil, makes it stressed steadily, has improved the reliability of fork truck function of weighing; Meanwhile, the utility model can also be added up hoist number of times and cumulative corresponding with the number of times that a hoists liter weight; Can also be by color and audible alarm when playing liter weight overload; If desired, the information output of recent fork truck handling goods can have been expanded to the utility function of fork truck, improve the safety that fork truck uses, for implementing fork truck management, analyze the accident of fork truck, promote the revolution of carrying fork truck technology to there is undoubtedly positive effect; In addition, the utility model goes for polytype fork truck, wide accommodation.
Accompanying drawing explanation
Fig. 1 is a kind of forklift device schematic diagram that measures cargo weight of the present utility model;
Fig. 2 is the installation site figure of oil pressure sensor of the present utility model in hydraulic circuit;
Fig. 3 is the electrical connection schematic diagram of each parts of the utility model;
Drawing reference numeral explanation:
1-oil pump; 2-valving; 3-lift oil tank; 4-oil pressure sensor; 5-telltale; 6-warning device; 7-control unit; 8-data output interface;
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail, protection domain of the present utility model is not limited to the following specific embodiment.
The specific embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of fork truck that measures cargo weight, comprise oil pump 1, multiway valve, lift oil tank 3, oil pressure sensor 4, telltale 5, buzzer phone and control unit 7;
Between described oil sources and lift oil tank, be provided with hoist oil circuit and oil return circuit; Described oil sources, oil pump 1, multiway valve, lift oil tank 3 connect successively by the oil circuit that hoists; Described lift oil tank 3, multiway valve, oil sources connect successively by oil return circuit; Described valving 2 is multiway valve; Described in being arranged on, described multiway valve hoists in oil circuit and oil return circuit, the switch of hoist described in control oil circuit and oil return circuit;
Described in described oil pressure sensor 4 is arranged on, hoist in oil circuit, and be arranged on the exit of described multiway valve.
The IC chip that described control unit 7 forms for micro controller system, it comprises computing circuit and decision circuit;
The signal input part of described computing circuit and decision circuit is connected with the signal output part of described oil pressure sensor 4 respectively, and the signal output part of described computing circuit is connected with described telltale 5; The signal output part of described decision circuit is connected with buzzer phone;
The data output end of described control unit 7 is provided with data output interface 8, and described data output interface 8 is USB interface.
Telltale 5, control unit 7 and data output interface 8 are installed on the gauge panel of fork truck.
Hydraulic oil is by described oil pump 1 output, and the oil circuit valve that hoists through described multiway valve, injects described lift oil tank 3, promotes the piston stroking upward in described lift oil tank 3, drives described forklift truck goods frame lifting goods; In lifting process, by described oil pressure sensor 4, detect the oil pressure pressure signal hoisting in oil circuit, oil pressure pressure signal oil pressure sensor 4 being recorded by control unit 7 is converted to the gravimetric value of goods, by control unit 7, carry out logic judgement, by the cargo weight result and the preset value comparison that convert at every turn, if surpass preset value, buzzer phone sends alarm sound; If be less than estimated value, by telltale 5, show the weight of goods.
Technique scheme is one embodiment of the present invention, for those skilled in the art, the invention discloses on the basis of application process and principle, be easy to make various types of improvement or distortion, and be not limited only to the described structure of the above-mentioned specific embodiment of the present invention, therefore previously described mode is just preferred, and does not have restrictive meaning.
Claims (8)
1. a fork truck that measures cargo weight, is characterized in that:
Described fork truck comprises weight detecting unit, control unit (7) and telltale (5);
Described weight detecting unit comprises oil pump (1), valving (2), lift oil tank (3) and oil pressure sensor (4); Described oil pump (1), valving (2), lift oil tank (3) connect successively by the oil circuit that hoists; Described lift oil tank (3) is ram cylinder, described in described oil pressure sensor (4) is arranged on, hoists in oil circuit;
Described oil pressure sensor (4), control unit (7) and telltale (5) connect successively by data line;
Described oil pump (1) transfers to described lift oil tank (3) by the oil circuit that hoists described in hydraulic oil edge, by described oil pressure sensor (4), detect the oil pressure pressure signal in described lift oil tank (3), by described control unit (7), oil pressure pressure signal is converted to weight signal, and testing result is transferred to described telltale (5).
2. a kind of fork truck that measures cargo weight according to claim 1, is characterized in that:
Between described lift oil tank (3) and oil sources, be provided with oil return circuit; Described valving (2) is multiway valve; Described in being arranged on, described multiway valve hoists in oil circuit and oil return circuit, the switch of hoist described in control oil circuit and oil return circuit;
Described oil pressure sensor (4) is arranged on hoisting in oil circuit between described multiway valve and lift oil tank (3).
3. a kind of fork truck that measures cargo weight according to claim 2, is characterized in that:
The multiway valve exit hoisting in oil circuit described in described oil pressure sensor (4) is arranged on.
4. according to described a kind of fork truck that measures cargo weight claimed in claim 1, it is characterized in that:
Hydraulic oil pressure scope in described lift oil tank (3) is 5～40Mpa;
The check weighing scope of described fork truck is 0.25～80 ton.
5. a kind of fork truck that measures cargo weight according to claim 1, is characterized in that:
Described fork truck also comprises warning device (6);
Described warning device (6) is electrically connected to the signal output part of described control unit (7), and described warning device is buzzer phone or LED luminous component.
6. a kind of fork truck that measures cargo weight according to claim 1, is characterized in that:
Described fork truck also comprises data output interface (8);
Described data output interface (8) is connected with the data output end of described control unit (7).
7. according to claim 1,5, one of 6 described a kind of fork trucks that measure cargo weight, it is characterized in that:
Described control unit (7) is central process unit.
8. a kind of fork truck that measures cargo weight according to claim 1, is characterized in that:
Described fork truck is counterbalanced lift truck, any one in lift truck with straddle outeriggers, carrier-and-stacker, side fork lift truck and driverless operation fork truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320473980.8U CN203411294U (en) | 2013-08-05 | 2013-08-05 | Forklift for measuring weight of cargoes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320473980.8U CN203411294U (en) | 2013-08-05 | 2013-08-05 | Forklift for measuring weight of cargoes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203411294U true CN203411294U (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320473980.8U Expired - Fee Related CN203411294U (en) | 2013-08-05 | 2013-08-05 | Forklift for measuring weight of cargoes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203411294U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104444949A (en) * | 2014-11-25 | 2015-03-25 | 苏州先锋物流装备科技有限公司 | Forklift provided with USB terminal |
| CN107311086A (en) * | 2016-04-26 | 2017-11-03 | 博世汽车柴油系统有限公司 | Judge fork truck load whether overweight control unit and method |
| CN107673276A (en) * | 2017-09-26 | 2018-02-09 | 林德（中国）叉车有限公司 | A kind of fork truck maximum lift height method for limiting and system |
| CN107720625A (en) * | 2017-09-26 | 2018-02-23 | 林德（中国）叉车有限公司 | A kind of fork truck maximum cargo lifting method for limiting and system |
| CN107840289A (en) * | 2017-09-26 | 2018-03-27 | 林德（中国）叉车有限公司 | A kind of fork truck maximum cargo lifting method for limiting and system |
| CN108117019A (en) * | 2016-11-29 | 2018-06-05 | 比亚迪股份有限公司 | Fork truck overload detection method, device and truck hydraulic control system |
| CN109879206A (en) * | 2019-03-13 | 2019-06-14 | 南京实邦智能科技有限公司 | The detection method and device of fork truck center of gravity and transport vehicle center of gravity |
| CN109911819A (en) * | 2019-03-22 | 2019-06-21 | 杭州昱透实业有限公司 | A kind of balance weight type AGV forklift |
-
2013
- 2013-08-05 CN CN201320473980.8U patent/CN203411294U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104444949A (en) * | 2014-11-25 | 2015-03-25 | 苏州先锋物流装备科技有限公司 | Forklift provided with USB terminal |
| CN107311086A (en) * | 2016-04-26 | 2017-11-03 | 博世汽车柴油系统有限公司 | Judge fork truck load whether overweight control unit and method |
| CN108117019A (en) * | 2016-11-29 | 2018-06-05 | 比亚迪股份有限公司 | Fork truck overload detection method, device and truck hydraulic control system |
| CN107673276A (en) * | 2017-09-26 | 2018-02-09 | 林德（中国）叉车有限公司 | A kind of fork truck maximum lift height method for limiting and system |
| CN107720625A (en) * | 2017-09-26 | 2018-02-23 | 林德（中国）叉车有限公司 | A kind of fork truck maximum cargo lifting method for limiting and system |
| CN107840289A (en) * | 2017-09-26 | 2018-03-27 | 林德（中国）叉车有限公司 | A kind of fork truck maximum cargo lifting method for limiting and system |
| CN107720625B (en) * | 2017-09-26 | 2019-05-03 | 林德（中国）叉车有限公司 | A kind of fork truck maximum cargo promotes method for limiting and system |
| CN107840289B (en) * | 2017-09-26 | 2019-05-03 | 林德（中国）叉车有限公司 | A kind of fork truck maximum cargo promotes method for limiting and system |
| CN109879206A (en) * | 2019-03-13 | 2019-06-14 | 南京实邦智能科技有限公司 | The detection method and device of fork truck center of gravity and transport vehicle center of gravity |
| CN109911819A (en) * | 2019-03-22 | 2019-06-21 | 杭州昱透实业有限公司 | A kind of balance weight type AGV forklift |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 |