CN204549859U - The cart running velocity control system of overhead traveling crane - Google Patents
The cart running velocity control system of overhead traveling crane Download PDFInfo
- Publication number
- CN204549859U CN204549859U CN201520180225.XU CN201520180225U CN204549859U CN 204549859 U CN204549859 U CN 204549859U CN 201520180225 U CN201520180225 U CN 201520180225U CN 204549859 U CN204549859 U CN 204549859U
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- cart
- frequency converter
- control relay
- overhead traveling
- bypass
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Abstract
The utility model discloses a kind of cart running velocity control system of overhead traveling crane, comprise cart operating instruction unit, dolly load supervision unit and cart frequency converter, the cart fast signal output line of described cart operating instruction unit is provided with a bypass at least in parallel, described cart fast signal output line and bypass are respectively arranged with and select a normal open switch closed and the control relay of connecting with described normal open switch by described dolly load supervision unit controls, described cart frequency converter is provided with multiple corresponding from described control relay one by one and signal incoming end that is respectively corresponding different running frequency, on the line attachment of this signal incoming end, be serially connected with the open contact corresponding with described control relay simultaneously.Drive on frequency converter at the large dolly of hoisting crane, utilize frequency converter multistage speed and dolly load supervision unit to realize hoisting crane in different loads section automatic switchover running frequency.And reach result of use more safely and efficiently.
Description
Technical field
The utility model relates to hoisting crane technical field, particularly relates to a kind of cart running velocity control system of overhead traveling crane.
Background technology
In current Crane Industry, along with the extensive application of frequency converter and Programmable Logic Controller, cart and the trolley travelling of overhead traveling crane generally all have employed Frequency Converter Control, are set to dual-speed control pattern (one grade of low speed, one grade of high speed) or electrodeless variable-speed pattern.Because using simple and operating habit, dual-speed control pattern more makes operator favor.
But under dual-speed control pattern, in order to enhance productivity, usually be set as during high speed that full frequency runs, usually be set as low-frequency operation during low speed, velocity contrast is larger between the two, when hoisting crane hangs loads close at full load, during now hoisting crane high-speed cruising operation, speed is too large, and inertia is large, hangs loads and swings large, operational hazards.And when using low speed to hang to carry, hoisting crane low speed is generally used for adjustment and falls to hanging position or accurately locate under normal circumstances, and now excessively slow running velocity causes the service efficiency of hoisting crane significantly to reduce.During the field application of similar this kind of situation, safety in production and High-efficient Production is caused to be difficult to get both.
Utility model content
The purpose of this utility model is the technological deficiency for existing in prior art, and provides a kind of cart running velocity control system of overhead traveling crane.
The technical scheme adopted for realizing the purpose of this utility model is:
A kind of cart running velocity control system of overhead traveling crane, comprise cart operating instruction unit, dolly load supervision unit and cart frequency converter, the cart fast signal output line of described cart operating instruction unit is provided with a bypass at least in parallel, described cart fast signal output line and bypass are respectively arranged with and select a normal open switch closed and the control relay of connecting with described normal open switch by described dolly load supervision unit controls, described cart frequency converter is provided with multiple corresponding from described control relay one by one and signal incoming end that is respectively corresponding different running frequency, on the line attachment of this signal incoming end, be serially connected with the open contact corresponding with described control relay simultaneously.
Described bypass is two.
Described dolly load supervision unit comprises the pressure sensor be arranged on hoisting mechanism for trolley, the controller be connected with described pressure sensor signal, and described control relay is connected with described controller is controlled.
Compared with prior art, the beneficial effects of the utility model are:
Drive on frequency converter at the large dolly of hoisting crane, utilize frequency converter multistage speed and dolly load supervision unit to realize hoisting crane in different loads section automatic switchover running frequency.And reach result of use more safely and efficiently.Improve the operability safely and efficiently of hoisting crane entirety, and achieve the different velocity shooting that automatically switches, eliminate artificial aloft work, upper hoisting crane regulates frequency converter, improve the service life of hoisting crane complete machine.
Accompanying drawing explanation
Figure 1 shows that the schematic diagram of the cart running velocity control part of overhead traveling crane of the present utility model;
Figure 2 shows that Frequency Converter Control partial schematic diagram.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As illustrated in fig. 1 and 2, the cart running velocity control system of overhead traveling crane of the present utility model comprises cart operating instruction unit U1, dolly load supervision unit U2 and cart frequency converter U3, the cart fast signal output line of described cart operating instruction unit is provided with a bypass at least in parallel, be preferably two or more, exemplary illustrated is carried out below for two bypasses, described cart fast signal output line and bypass are respectively arranged with and select a closed normal open switch M1 by described dolly monitoring unit controls, M2 and M3 and the control relay K3 connected with described normal open switch, K4 and K5, described cart frequency converter is provided with multiple corresponding from described control relay one by one and signal incoming end that is respectively corresponding different running frequency, on the line attachment of this signal incoming end, be serially connected with the open contact K3-1 corresponding with described control relay simultaneously, K4-1 and K5-1.
Described cart operating instruction unit U1 refers to crane control handle or by the cart operating instruction signal output unit after PLC process, command signal comprises: cart advances, cart retreats, cart is quick.Described dolly load supervision unit U2 utilizes the pressure sensor be arranged on dolly (cucurbit) lifting mechanism, the controller be connected with described pressure sensor signal, as PLC, described controller can change M1, M2, M3 tri-output state of group relay according to pressure sensor currency correspondence, controller can adopt commercially available chip, as the QCX-BY type lifting tonnage monitoring killer that Changzhou Chang Xin electronic scale Co., Ltd produces, or utilize the logic control of PLC, can be completed by simple setting value.As to be set to when hoisting crane hangs loads at 0 to 30% nominal payload M1 closed, when hoisting crane hang M2 when loads is greater than 30% to 60% nominal payload closed, close when hoisting crane hangs M3 when loads is greater than 60% to 100% nominal payload.Described cart frequency converter U3 is commercially available hoisting crane translation special converter, runs the highest frequency of variable-frequency motor for 50HZ for cart, and by arranging frequency instruction source for multifunction terminal input, preset operating frequency is 12.5HZ; No. 1 terminal function advancing corresponding with cart is that motor rotates forward; Retreating No. 2 corresponding terminal functions with cart is motor reversal; No. 3 terminal functions corresponding with M1 and K3 are multistage speed 1 (50HZ); No. 4 terminal functions corresponding with M2 and K4 are multistage speed 2 (35HZ), and No. 5 terminal functions corresponding with M3 and K5 are: multistage speed 1 (25HZ); No. 6 terminal functions are for controlling common port.
Concrete Systematical control detailed annotation is as follows:
1. when hoisting crane hang loads be less than 30% nominal payload advance fast run time, namely cart advances, cart very fast instruction sends, and the dolly load supervision unit inside only M1 closing of contact, relay K 1 and K3 coil obtain electric, corresponding contact K1-1 and K3-1 adhesive.Now No. 1, frequency converter and No. 3 signal incoming ends obtain electric, and hoisting crane rotates forward, multistage speed 1 receives instruction.By the multistage speed value of setting, cart is current walks with maximum running frequency (50HZ).
2. when hoisting crane hang loads be greater than 30% be less than 60% nominal payload advance fast run time, namely cart advances, cart very fast instruction sends.The dolly load supervision unit inside only M2 closing of contact, relay K 1 and K4 coil obtain electric, corresponding contact K1-1 and K4-1 adhesive.Now No. 1, frequency converter and No. 4 signal incoming ends obtain electric, and hoisting crane rotates forward, multistage speed 2 receives instruction, and by the multistage speed value of setting, cart is walked with 35HZ, and running velocity reduces.
3. when hoisting crane hang loads be greater than 60% be less than 100% nominal payload advance fast run time, namely cart advances, cart very fast instruction sends.The dolly load supervision unit inside only M3 closing of contact, relay K 1 and K4 coil obtain electric, corresponding contact K1-1 and K3-1 adhesive.Now No. 1, frequency converter and No. 4 signal incoming ends obtain electric, and hoisting crane rotates forward, multistage speed 2 receives instruction.By the multistage speed value of setting, cart is walked with 25HZ, and running velocity more reduces, and when retreating, corresponding K2 and K2-1 closes, and does not repeat them here.
The multistage speed that certain frequency converter is corresponding can carry out just arranging arbitrarily property according to different application occasion.So hoisting crane different hang loads under, the running velocity of hoisting crane entirety, obtains automatic optimization, makes the use of hoisting crane more be partial to intellectuality, allows operating personal use more safely and efficiently.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. the cart running velocity control system of an overhead traveling crane, it is characterized in that, comprise cart operating instruction unit, dolly load supervision unit and cart frequency converter, the cart fast signal output line of described cart operating instruction unit is provided with a bypass at least in parallel, described cart fast signal output line and bypass are respectively arranged with and select a normal open switch closed and the control relay of connecting with described normal open switch by described dolly load supervision unit controls, described cart frequency converter is provided with multiple corresponding from described control relay one by one and signal incoming end that is respectively corresponding different running frequency, on the line attachment of this signal incoming end, be serially connected with the open contact corresponding with described control relay simultaneously.
2. the cart running velocity control system of overhead traveling crane as claimed in claim 1, it is characterized in that, described bypass is two.
3. the cart running velocity control system of overhead traveling crane as claimed in claim 1, it is characterized in that, described dolly load supervision unit comprises the pressure sensor be arranged on hoisting mechanism for trolley, the controller be connected with described pressure sensor signal, described control relay is connected with described controller is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520180225.XU CN204549859U (en) | 2015-03-27 | 2015-03-27 | The cart running velocity control system of overhead traveling crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520180225.XU CN204549859U (en) | 2015-03-27 | 2015-03-27 | The cart running velocity control system of overhead traveling crane |
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| Publication Number | Publication Date |
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| CN204549859U true CN204549859U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520180225.XU Expired - Fee Related CN204549859U (en) | 2015-03-27 | 2015-03-27 | The cart running velocity control system of overhead traveling crane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105329779A (en) * | 2015-12-02 | 2016-02-17 | 天津德仕达起重输送设备有限公司 | Crane multi-speed-mode control method and control system |
| CN107399673A (en) * | 2017-09-19 | 2017-11-28 | 安徽骏达起重机械有限公司 | The governing system and method for crane |
-
2015
- 2015-03-27 CN CN201520180225.XU patent/CN204549859U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105329779A (en) * | 2015-12-02 | 2016-02-17 | 天津德仕达起重输送设备有限公司 | Crane multi-speed-mode control method and control system |
| CN105329779B (en) * | 2015-12-02 | 2017-03-29 | 天津德仕达起重输送设备有限公司 | Crane multiple speed modes control system |
| CN107399673A (en) * | 2017-09-19 | 2017-11-28 | 安徽骏达起重机械有限公司 | The governing system and method for crane |
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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: 20150812 Termination date: 20210327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |