CN201301204Y - Load limiter for fork lift truck - Google Patents
Load limiter for fork lift truck Download PDFInfo
- Publication number
- CN201301204Y CN201301204Y CNU2008201592849U CN200820159284U CN201301204Y CN 201301204 Y CN201301204 Y CN 201301204Y CN U2008201592849 U CNU2008201592849 U CN U2008201592849U CN 200820159284 U CN200820159284 U CN 200820159284U CN 201301204 Y CN201301204 Y CN 201301204Y
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- CN
- China
- Prior art keywords
- fork truck
- lift truck
- fork lift
- load
- load limiter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a load limiter for a fork lift truck, which comprises a lifting oil cylinder oil-circuit (2), an unloading solenoid valve (1) arranged on the lifting oil cylinder oil-circuit (2) and a fork lift truck electric control box (3) and a fork lift truck electronic instrument (4) which are electrically connected with the unloading solenoid valve (1), wherein, a pressure transmitter (5) is arranged on the lifting oil cylinder oil-circuit (2) and is electrically connected with the fork lift truck electronic instrument (4). The utility model is the device capable of accurately measuring the weight of the cargoes and is the load limiter used for the fork lift truck and capable of cutting off the actions of the hydraulic system during the overloading process.
Description
Technical field
The utility model relates to a kind of load limiter, particularly relates to a kind of fork truck load limiter.
Background technology
Fork truck is to use flow-type handling machinery very widely, is a kind of of material handling machinery.It constitutes by install special-purpose handling labor device additional on the trackless chassis.But fork truck still adopts load curve figure to remind truck driver not overload at present, in order to avoid cause overthrow accident.The method is difficult to estimate overload operating mode, poor operability.
The utility model content
Technical problem to be solved in the utility model provides a kind of device that can accurately measure pay load, and the fork truck load limiter that can cut off the action of hydraulic efficiency pressure system when overload.
In order to solve the problems of the technologies described above, the fork truck load limiter that the utility model provides, comprise the elevating ram oil circuit, be arranged at the off-load electromagnetic valve on the elevating ram oil circuit, fork truck electric-controlled box that is electrically connected with the off-load electromagnetic valve and fork truck electronic instrument, be provided with pressure transformer on described elevating ram oil circuit, described pressure transformer is electrically connected with described fork truck electronic instrument.
Adopt the fork truck load limiter of technique scheme, a pressure transformer is installed on the elevating ram oil circuit, pressure transformer can be converted into cooresponding output voltage signal to the system pressure of elevating ram oil circuit.When output voltage signal during greater than certain calibration value the fork truck electronic instrument give a warning sound with dangerous tip and export a high level, high level inserts the off-load electromagnetic valve that cuts off hydraulic efficiency pressure system behind the fork truck electric-controlled box, this moment, the action of hydraulic efficiency pressure system was limited.Play the effect of safety guard-safeguard.This fork truck shows accurately, stablizes with load limiter, and safety guard-safeguard is reliable.
In sum, the utility model is a kind of device that can accurately measure pay load, and the fork truck load limiter that can cut off the action of hydraulic efficiency pressure system when overload.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, elevating ram oil circuit 2 one ends of fork truck are connected with elevating ram 6, the other end is connected with off-load electromagnetic valve 1, fork truck electric-controlled box 3 one ends are electrically connected with off-load electromagnetic valve 1, the other end is electrically connected with fork truck electronic instrument 4, be provided with pressure transformer 5 on elevating ram oil circuit 3, pressure transformer 5 is electrically connected with fork truck electronic instrument 4.
Referring to Fig. 1, a pressure transformer 5 is installed on elevating ram oil circuit 2, pressure transformer 5 can be converted into cooresponding output voltage signal to the system pressure of elevating ram oil circuit 2.When output voltage signal during greater than certain calibration value fork truck electronic instrument 4 give a warning sound with dangerous tip and export a high level (this function can be cancelled by meter key), high level inserts the off-load electromagnetic valve 1 that fork truck electric-controlled box 3 backs cut off hydraulic efficiency pressure system, and this moment, the action of hydraulic efficiency pressure system was limited.Play the effect of safety guard-safeguard.
The system pressure of elevating ram oil circuit 2 is definite by cargo-carrying weight, and linear.The pressure and the output voltage values of pressure transformer 5 inductions also are proportional relations.So as long as demarcate the relation that two points just can be determined elevating ram oil circuit 2 system pressures and pressure transformer 5 output voltage values.Demarcating a minimum value by fork truck electronic instrument 4 in application is quiescent value, and demarcating a maxim again is the fork truck rated load weight.The variation of pay load just can be reflected on the fork truck electronic instrument 4.Consider the influence of vibration when fork truck travels, in the load limit program of fork truck electronic instrument 4, add the time-delay algorithm.Consider door frame anteversion and retroversion and hydraulic efficiency pressure system leakage reasons, load shows ten sections liquid crystal displays of employing.
This fork truck shows accurately, stablizes with load limiter, and safety guard-safeguard is reliable.
Claims (1)
1, a kind of fork truck load limiter, comprise elevating ram oil circuit (2), be arranged at the off-load electromagnetic valve (1) on the elevating ram oil circuit (2), fork truck electric-controlled box (3) that is electrically connected with off-load electromagnetic valve (1) and fork truck electronic instrument (4), it is characterized in that: be provided with pressure transformer (5) on described elevating ram oil circuit (2), described pressure transformer (5) is electrically connected with described fork truck electronic instrument (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201592849U CN201301204Y (en) | 2008-11-19 | 2008-11-19 | Load limiter for fork lift truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201592849U CN201301204Y (en) | 2008-11-19 | 2008-11-19 | Load limiter for fork lift truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201301204Y true CN201301204Y (en) | 2009-09-02 |
Family
ID=41084825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201592849U Expired - Fee Related CN201301204Y (en) | 2008-11-19 | 2008-11-19 | Load limiter for fork lift truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201301204Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213923A (en) * | 2013-04-11 | 2013-07-24 | 浙江诺力机械股份有限公司 | Control system and control method for industrial vehicle lifting mechanism |
| CN103857616A (en) * | 2011-09-27 | 2014-06-11 | 力至优三菱叉车株式会社 | Forklift |
| CN106082038A (en) * | 2016-08-13 | 2016-11-09 | 安徽合力股份有限公司 | A kind of fool proof forklift hydraulic system |
-
2008
- 2008-11-19 CN CNU2008201592849U patent/CN201301204Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857616A (en) * | 2011-09-27 | 2014-06-11 | 力至优三菱叉车株式会社 | Forklift |
| CN103857616B (en) * | 2011-09-27 | 2016-01-06 | 力至优三菱叉车株式会社 | Fork truck |
| US10023451B2 (en) | 2011-09-27 | 2018-07-17 | Mitsubishi Nichiyu Forklift Co., Ltd. | Forklift |
| CN103213923A (en) * | 2013-04-11 | 2013-07-24 | 浙江诺力机械股份有限公司 | Control system and control method for industrial vehicle lifting mechanism |
| CN106082038A (en) * | 2016-08-13 | 2016-11-09 | 安徽合力股份有限公司 | A kind of fool proof forklift hydraulic system |
| CN106082038B (en) * | 2016-08-13 | 2018-03-09 | 安徽合力股份有限公司 | A kind of fool proof forklift hydraulic system |
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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: 20090902 Termination date: 20141119 |
|
| EXPY | Termination of patent right or utility model |