CN106829821B - Double-load weighing system for scissor-fork type lifting working platform - Google Patents
Double-load weighing system for scissor-fork type lifting working platform Download PDFInfo
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- CN106829821B CN106829821B CN201710223975.4A CN201710223975A CN106829821B CN 106829821 B CN106829821 B CN 106829821B CN 201710223975 A CN201710223975 A CN 201710223975A CN 106829821 B CN106829821 B CN 106829821B
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- load
- working platform
- control unit
- limit switch
- lifting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model provides a cut fork lift work platform and use two load weighing system, includes angle sensor and the pressure sensor of recording the hydro-cylinder lifting pressure of record work platform lifting height, and angle sensor and pressure sensor are connected with the electrical control unit through the wire respectively, and the electrical control unit passes through the wire and is connected with low level limit switch and highest limit switch respectively, and it has two rated load, work efficiency height, structural design is simple, advantage such as with low costs.
Description
The technical field is as follows:
the invention relates to the technical field of scissor lifts, in particular to a double-load weighing system for a scissor lift working platform.
Background art:
a scissor-type lifting working platform is special equipment for high-altitude operation with wide application, a load weighing system is one of necessary safety guarantee systems of the scissor-type lifting working platform, and the load weighing system on the existing scissor-type lifting working platform is generally only provided with a rated load, namely the maximum load which is set for ensuring the stability of the whole vehicle when the working platform reaches the maximum height.
Although the existing load weighing system protects the scissor type lifting working platform to a certain extent, some defects still exist, for example, in actual work, the working height of the scissor type lifting working platform can be often smaller than the maximum working height, when the working height is not reached in the working process of the working platform, the rated load set when the working height is larger than the maximum height can be borne, but the existing load weighing system only sets the maximum rated load, therefore, the existing load weighing system can not bear heavier load when the scissor type lifting working platform works at the maximum height, the advantages of the scissor type lifting working platform can not be fully played, and therefore the working efficiency is indirectly reduced.
The invention content is as follows:
the invention aims to make up for the defects of the prior art, and provides a double-load weighing system for a scissor-type lifting working platform, which has the advantages of two rated loads, high working efficiency, simple structural design, low cost and the like, and solves the problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a double-load weighing system for a scissor-type lifting working platform comprises an angle sensor for recording the lifting height of the working platform and a pressure sensor for recording the lifting pressure of an oil cylinder, wherein the angle sensor and the pressure sensor are respectively connected with an electric control unit through wires, and the electric control unit is respectively connected with a low limit switch and a highest limit switch through wires.
The low-position limit switch is a micro travel switch and is connected with a normally open contact.
The highest limit switch is a micro travel switch and is connected with a normally closed contact.
The electric control unit is an NVR-201076 electric control unit.
By adopting the scheme, the double-load weighing system for the scissor type lifting working platform is designed aiming at the technical problems of the load weighing system of the existing scissor type lifting working platform, the lifting height of the working platform is detected in real time by designing the angle sensor, and the lifting height is converted into an electric signal to be transmitted to the electric control unit; by designing the pressure sensor, the lifting pressure of the oil cylinder under rated power is accurately detected in real time when the working platform bears different loads and lifts different heights, and the lifting pressure is converted into an electric signal to be transmitted to the electric control unit; the lifting height of the working platform is divided into two sections and rated loads are respectively designed by designing the low-position limit switch, and the low-position limit switch is used for switching the two rated loads; by designing a highest limit switch, when the working platform rises to a highest position, the working platform is triggered, and the working platform stops lifting to alarm; through the design of the electric control unit, the input signal is processed and operated, corresponding instructions are sent according to operation results, the working platform can be used at a low height and a large load and at a high height and a small load, the beneficial effect of one-vehicle dual-purpose is achieved, the performance of the scissor-fork type lifting working platform is exerted to the maximum, and the working efficiency is improved.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
the device comprises an angle sensor 1, an angle sensor 2, a pressure sensor 3, an electric control unit 4, a low-position limit switch 5 and a highest limit switch.
The specific implementation mode is as follows:
the invention is further illustrated by the following examples in conjunction with the following figures:
as shown in fig. 1, a double-load weighing system for a scissor-fork type lifting working platform comprises an angle sensor 1 for recording the lifting height of the working platform and a pressure sensor 2 for recording the lifting pressure of an oil cylinder, wherein the angle sensor 1 and the pressure sensor 2 are respectively connected with an electric control unit 3 through leads, the electric control unit 3 is respectively connected with a low limit switch 4 and a highest limit switch 5 through leads, the lifting height of the working platform is detected in real time by designing the angle sensor 1, and the lifting height is converted into an electric signal to be transmitted to the electric control unit 3; by designing the pressure sensor 2, the lifting pressure of the oil cylinder under rated power is accurately detected in real time when the working platform bears different loads and lifts different heights, and the lifting pressure is converted into an electric signal to be transmitted to the electric control unit 3; the lifting height of the working platform is divided into two sections and rated loads are respectively designed by designing the low-position limit switch 4, and the low-position limit switch 4 is used for switching the two rated loads; by designing the highest limit switch 5, when the working platform rises to the highest position, the working platform is triggered, and the working platform stops lifting to alarm; through design electrical control unit 3, realize processing and the operation to input signal, send corresponding instruction according to the operation result, ensure that work platform both can low height, heavy load use, also can high height, light load use to reach the dual-purpose beneficial effect of whole car, the performance of fork lift work platform is cut to the maximum performance, improves work efficiency.
The low-position limit switch 4 is a micro travel switch and is connected with a normally open contact, so that the cost is low and the signal detection is accurate.
The highest limit switch 5 is a micro travel switch and is connected with a normally closed contact, so that the cost is low and the signal detection is accurate.
The electric control unit 3 is an NVR-201076 electric control unit.
The working process of the invention is as follows:
the maximum lifting height of the scissor-type lifting working platform is assumed to be 14m, when the height of the working platform is less than or equal to 10m, the rated load is 320kg, and when the height of the working platform is more than 10m and less than or equal to 14m, the rated load is 220kg.
When the scissor-type lifting working platform works, the angle sensor 1 detects the height of the working platform in real time and transmits detection information to an Electrical Control Unit (ECU) 3, the pressure sensor 2 detects the lifting pressure of an oil cylinder in real time, the lifting pressure can be converted to obtain the load weight, the detection information is transmitted to the electrical control unit 3 (ECU), a low-position limit switch 4 is a 10m limit switch which is a micro-motion type travel switch and is connected with a normally open contact, a highest limit switch 5 is a micro-motion type travel switch and is connected with a normally closed contact, when the height of the working platform is smaller than or equal to 10m, the low-position limit switch 4 is not triggered, the rated load of the working platform is 320kg, the pressure sensor 2 transmits the detected lifting pressure of the oil cylinder to the electrical control unit 3, the electrical control unit 3 processes the lifting pressure information into a weighing load and compares the weighing load with the rated load 320kg, when the weighing load is smaller than or equal to 320kg, the working platform normally runs, and when the weighing load is larger than 320kg, the working platform stops lifting and gives an alarm; when the lifting height of the working platform is greater than 10m, the low-position limit switch 4 is triggered and transmits a trigger signal to the electrical control unit 3, the rated load of the working platform is switched to 220kg at the moment, the pressure sensor 2 transmits the detected lifting pressure of the oil cylinder to the electrical control unit 3, the electrical control unit 3 processes lifting pressure information into a weighing load and compares the weighing load with the rated load 220kg, when the weighing load is less than or equal to the rated load 220kg, the working platform normally operates or continues to lift, and when the weighing load is greater than the rated load 220kg, the working platform stops working and gives an alarm; when the lifting height of the working platform reaches 14m, the highest limit switch 5 is triggered, a trigger signal is transmitted to the electric control unit 3, and the working platform stops lifting and gives an alarm.
The above-described embodiments should not be construed as limiting the scope of the invention, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (2)
1. The utility model provides a cut fork lift work platform and use two load weighing system which characterized in that: the device comprises an angle sensor for recording the lifting height of a working platform and a pressure sensor for recording the lifting pressure of an oil cylinder, wherein the angle sensor and the pressure sensor are respectively connected with an electric control unit through leads, and the electric control unit is respectively connected with a low-position limit switch and a highest limit switch through leads;
the pressure sensor detects the lifting pressure of the oil cylinder in real time, the lifting pressure can obtain the load weight through conversion, detection information is transmitted to the electrical control unit, the low-position limit switch is a 10m limit switch and is a micro-motion type travel switch, the high-position limit switch is a micro-motion type travel switch and is connected with a normally open contact, the highest limit switch is a micro-motion type travel switch and is connected with a normally closed contact, when the height of the working platform is smaller than or equal to 10m, the low-position limit switch is not triggered, the rated load of the working platform is 320kg, the pressure sensor transmits the detected lifting pressure of the oil cylinder to the electrical control unit, the electrical control unit processes the lifting pressure information into a weighing load, the weighing load is compared with the rated load 320kg, when the weighing load is smaller than or equal to 320kg, the working platform normally operates, and when the weighing load is larger than 320kg, the working platform stops lifting and gives an alarm; when the lifting height of the working platform is larger than 10m, the low-position limit switch is triggered and transmits a trigger signal to the electrical control unit, the rated load of the working platform is switched to 220kg, the pressure sensor transmits the detected lifting pressure of the oil cylinder to the electrical control unit, the electrical control unit processes lifting pressure information into a weighing load, the weighing load is compared with the rated load 220kg, when the weighing load is smaller than or equal to the rated load 220kg, the working platform normally runs or continues to lift, and when the weighing load is larger than the rated load 220kg, the working platform stops working and gives an alarm.
2. A dual load weighing system for a scissor lift platform according to claim 1 wherein: the electric control unit is an NVR-201076 electric control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710223975.4A CN106829821B (en) | 2017-04-07 | 2017-04-07 | Double-load weighing system for scissor-fork type lifting working platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710223975.4A CN106829821B (en) | 2017-04-07 | 2017-04-07 | Double-load weighing system for scissor-fork type lifting working platform |
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| CN106829821A CN106829821A (en) | 2017-06-13 |
| CN106829821B true CN106829821B (en) | 2022-12-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107140573A (en) * | 2017-06-20 | 2017-09-08 | 合肥航机械科技股份有限公司 | One kind is based on car lift control system and its control method |
| CN109033020B (en) * | 2018-09-07 | 2022-09-23 | 北谷电子有限公司 | Scissor-fork type aerial work platform lifting height calculation method |
| CN114483718B (en) * | 2022-04-15 | 2022-07-12 | 临工集团济南重机有限公司 | Load weighing method for aerial work platform and aerial work platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1932189A1 (en) * | 1968-06-26 | 1970-02-26 | Dso Balkancar | Electro-hydraulic device for limiting the load or the lifting height for lifting or conveying equipment |
| JP5353371B2 (en) * | 2008-05-26 | 2013-11-27 | 株式会社豊田自動織機 | Multistage mast type forklift load measuring device |
| CN101348216B (en) * | 2008-09-05 | 2010-06-02 | 湖南三一起重机械有限公司 | Crane security protection system and crane thereof |
| FR2938492B1 (en) * | 2008-11-14 | 2011-10-21 | Balea | ANTI-TILT SECURITY SYSTEM FOR HANDLING AND LIFTING EQUIPMENT |
| GB201017169D0 (en) * | 2010-10-12 | 2010-11-24 | Carruthers David | Apparatus capable of measuring load and load movement |
| CN102145869B (en) * | 2011-02-15 | 2013-01-09 | 徐州赫思曼电子有限公司 | Safety limit system for amplitude limit and torque limit redundancy |
| DE102011100913A1 (en) * | 2011-04-29 | 2012-10-31 | Jungheinrich Aktiengesellschaft | Truck with height-adjustable load carrier |
| CN203173775U (en) * | 2013-03-29 | 2013-09-04 | 中意泰达(营口)汽车保修设备有限公司 | Ultrathin large-scissor type lifter |
| CN106276696A (en) * | 2016-10-08 | 2017-01-04 | 苏州威尔特铝合金升降机械有限公司 | Scissor aerial work platform display system |
| CN206692292U (en) * | 2017-04-07 | 2017-12-01 | 临工集团济南重机有限公司 | A kind of double load weighing systems of scissors type elevating workbench |
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Address after: No.2676 Kejia Road, high tech Zone, Jinan City, Shandong Province, 250104 Applicant after: Lingong Heavy Machinery Co.,Ltd. Address before: No.2676 Kejia Road, high tech Zone, Jinan City, Shandong Province, 250104 Applicant before: LINGONG GROUP JINAN HEAVY MACHINERY Co.,Ltd. |
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