CN202265331U - Main hook protecting circuit structure for bridge type crane - Google Patents
Main hook protecting circuit structure for bridge type crane Download PDFInfo
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- CN202265331U CN202265331U CN2011202853867U CN201120285386U CN202265331U CN 202265331 U CN202265331 U CN 202265331U CN 2011202853867 U CN2011202853867 U CN 2011202853867U CN 201120285386 U CN201120285386 U CN 201120285386U CN 202265331 U CN202265331 U CN 202265331U
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Abstract
The utility model relates to a main hook protecting circuit structure for a bridge type crane. A first coil of a contactor of the main hook protecting circuit structure is respectively connected in series with corresponding normally closed contacts of an overcurrent relay and stroke switches and is respectively connected in series with normally closed contacts of corresponding cam controllers through a safe switch, in addition, a first normally closed contact is connected with a first normally open contact through a first starting push button, the first normally open contact is connected with a second normally closed contact of a main hook cam controller through a second starting push button, the second normally closed contact of the main hook cam controller is respectively connected with a ninth stroke switch and a third normally closed contact of a trolley cam controller, the third normally closed contact of the trolley cam controller is connected with a third normally closed contact of a cart cam controller through a seventh stroke switch, and the third normally closed contact of the cart cam controller is connected with one end of the safe switch corresponding to a first normally closed contact of the cart cam controller through a fifth stroke switch and a second normally open contact. The main hook protecting circuit structure has the advantage that the work safety of a main hook is improved.
Description
Technical field
The utility model relates to a kind of circuit structure, and especially a kind of main hook protective circuit structure of crane in bridge type belongs to the technical field of crane in bridge type.
Background technology
Crane in bridge type is to realize that production process mechanization, automation get important tool and equipment in modern industry production and the lifting transportation.So crane in bridge type is all used in departments such as indoor and outdoor industrial and mining enterprises, steel chemical, railway traffic, port and pier and logistics turnover and place widely.At present, the safe handling of crane in bridge type is paid special attention to, and particularly the crane in bridge type main hook is safe in utilization.
Summary of the invention
The purpose of the utility model is to overcome the deficiency that exists in the prior art, and a kind of main hook protective circuit structure of crane in bridge type is provided, and it is simple and compact for structure, has improved the safety of main hook work.
According to the technical scheme that the utility model provides, the main hook protective circuit structure of said crane in bridge type comprises contactless switch, and said contactless switch has first open contact and second open contact; Coil one end of said contactless switch is in series with the normally closed contact of the 8th overcurrent relay, the 7th overcurrent relay, the 6th overcurrent relay, the 5th overcurrent relay, the 4th overcurrent relay, the 3rd overcurrent relay, second overcurrent relay, first overcurrent relay, main overcurrent relay, fourth line journey switch, third trip switch, second travel switch and first travel switch respectively, and first travel switch is connected with first normally closed contact of cart cam controller, first normally closed contact of main hook cam controller and first normally closed contact of dolly cam controller through safety switch successively; First normally closed contact of said dolly cam controller links to each other with first open contact through first start button; Said first open contact links to each other with second normally closed contact of main hook cam controller through second start button, and second normally closed contact of main hook cam controller links to each other with second normally closed contact of the 9th travel switch, dolly cam controller and the 3rd normally closed contact of dolly cam controller respectively; The 3rd normally closed contact of said dolly cam controller links to each other with the 3rd normally closed contact of cart cam controller through the 7th travel switch, and the 3rd normally closed contact of said cart cam controller links to each other corresponding to an end that links to each other with first normally closed contact of cart cam controller with safety switch through the fifth line journey switch and second open contact; Second normally closed contact of dolly cam controller links to each other corresponding to an end that links to each other with the 3rd normally closed contact of cart cam controller with the 7th travel switch through the 8th travel switch; The 3rd normally closed contact of cart cam controller links to each other with the 6th travel switch through second normally closed contact of cart cam controller, and said the 6th travel switch links to each other corresponding to an end that links to each other with fifth line journey switch with second open contact corresponding to the other end that links to each other with second normally closed contact of cart cam controller.
Said first start button links to each other with first fuse corresponding to an end that links to each other with first open contact; The coil of contactless switch links to each other with second fuse corresponding to the other end that links to each other with the 8th overcurrent relay.
The advantage of the utility model: the self-locking circuit at contactless switch increases by second start button; Behind the closed safety switch and first start button; Need be through pressing the conducting that just can reach the contactless switch self-locking circuit behind second start button; Can avoid driving a vehicle the situation that maloperation causes the main hook high-altitude to be fallen occurs when main hook stops at upper limit, simple and compact for structure, has improved the safety of main hook work.
Description of drawings
Fig. 1 is the power circuit schematic diagram of the utility model running condition.
Fig. 2 is the schematic circuit diagram of the utility model.
Fig. 3 is the schematic circuit diagram of the utility model control warning structure.
Description of reference numerals: 1-main hook drive motor; The 2-first main hook band-type brake motor; The 3-second main hook band-type brake motor; The 4-trolley drive motor; 5-dolly band-type brake motor; The 6-first cart drive motor; The 7-first cart band-type brake motor; The 8-second cart drive motor; The 9-second cart band-type brake motor; 10-first open contact; 11-second open contact; 12-first fuse; 13-second fuse; First normally closed contact of 14-cart cam controller; First normally closed contact of 15-main hook cam controller; First normally closed contact of 16-dolly cam controller; Second normally closed contact of 17-cart cam controller; The 3rd normally closed contact of 18-cart cam controller; Second normally closed contact of 19-dolly cam controller; The 3rd normally closed contact of 20-dolly cam controller; Second normally closed contact of 21-main hook cam controller; The DK-knife-like switch; DJL-master's overcurrent relay; The C-contactless switch; 1JL-first overcurrent relay; 2JL-second overcurrent relay; 3JL-the 3rd overcurrent relay; 4JL-the 4th overcurrent relay; 5JL-the 5th overcurrent relay; 6JL-the 6th overcurrent relay; 7JL-the 7th overcurrent relay; 8JL-the 8th overcurrent relay; KTJ-main hook cam controller; KTX-dolly cam controller; KTD-cart cam controller; R1-first resistance box; R2-second resistance box; R3-the 3rd resistance box; R4-the 4th resistance box; 3RD-the 3rd fuse; 4RD-the 4th fuse; 1AK-first travel switch; 2AK-second travel switch; 3AK-third trip switch; 4AK-fourth line journey switch; 1DXK-fifth line journey switch; 2DXK-the 6th travel switch; 1XXK-the 7th travel switch; 2XXK-the 8th travel switch; ZXK-the 9th travel switch; DA-foot-operated switch and KB-voltage transformer and DL-electric bell.
The specific embodiment
Below in conjunction with concrete accompanying drawing and embodiment the utility model is described further.
As shown in Figure 1: as to be the main circuit diagram of present crane in bridge type running condition.L1, L2 and L3 are respectively the three-phase in the three phase mains; Three phase mains links to each other with contactless switch C through knife-like switch DK; The coil of contactless switch C links to each other with the second cart drive motor 8 with main hook drive motor 1, trolley drive motor 4 and the first cart drive motor 6 respectively through behind the main overcurrent relay DJL.X1, X2 and X3 are that main overcurrent relay DJL is positioned at X2 and goes up mutually through the three-phase of the three phase mains of exporting behind the knife-like switch DK; Contactless switch C is respectively X11, X22 and X31 through the three-phase that produces three phase mains behind the main overcurrent relay DJL.The first overcurrent relay 1JL is installed at the X11 that links to each other with main hook drive motor 1 on mutually; The second overcurrent relay 2JL is installed at the X31 that links to each other with main hook drive motor 1 on mutually; X11 phase, X22 reach X31 mutually and link to each other with main hook drive motor 1 through main hook cam controller KTJ mutually then; Main hook drive motor 1 also links to each other with the contact of main hook cam controller KTJ through the first resistance box R1; Connection through main hook cam controller KTJ corresponding contacts can realize the rotating of main hook drive motor 1.Also be provided with the first main hook band-type brake motor 2 and the second main hook band-type brake motor 3 on the main hook drive motor 1, safe and reliable in the time of can guaranteeing that through the first main hook band-type brake motor 2 and the second main hook band-type brake motor 3 main hook drive motor 1 drives the main hook motion.
The 3rd overcurrent relay 3JL is installed at the X11 that links to each other with trolley drive motor 4 on mutually; The 4th overcurrent relay 4JL is installed at the X31 that links to each other with trolley drive motor 4 on mutually; X11 phase, X22 reach X31 mutually and link to each other with trolley drive motor 4 through dolly cam controller KTX mutually then; Trolley drive motor 4 also links to each other with the corresponding contact of dolly cam controller KTX through the second resistance box R2, can realize the rotating of trolley drive motor 4, realizes the different operating requirement.Trolley drive motor 4 is provided with dolly band-type brake motor 5, can guarantee the safe and reliable of trolley drive motor 4 driving trolley when motion through dolly band-type brake motor 5.
The cart of crane in bridge type has two drive motor, is respectively the first cart drive motor 6 and the second cart drive motor 8.X11 phase, X22 reach X31 mutually and communicated and export behind the cart cam controller KTD; And link to each other with the first cart drive motor 6 through the 5th overcurrent relay 5JL, the 6th overcurrent relay 6JL; The first cart drive motor 6 links to each other through the contact with cart cam controller KTD, can realize the rotating of the first cart drive motor 6; Simultaneously; Link to each other with the second cart drive motor 8 through the 7th overcurrent relay 7JL, the 8th overcurrent relay 8JL; After the second cart drive motor 8 is connected through the corresponding contacts with cart cam controller KTD; The rotating of the second cart drive motor 8 can be realized,, the requirement of cart corresponding sports can be realized through the corresponding matching of a cart drive motor 6 and the second cart drive motor 8.The first cart band-type brake motor, 7, the second cart drive motor 8 that the first cart drive motor 6 is provided with corresponding matching are provided with the second cart band-type brake motor 9 of corresponding matching, can guarantee the safe and reliable of cart motion.
As shown in Figure 2: as to be the control circuit schematic diagram of the utility model.Contactless switch C has first open contact 10 and second open contact 11; Coil one end of said contactless switch is in series with the normally closed contact of the 8th overcurrent relay 8JL, the 7th overcurrent relay 7JL, the 6th overcurrent relay 6JL, the 5th overcurrent relay 5JL, the 4th overcurrent relay 4JL, the 3rd overcurrent relay 3JL, the second overcurrent relay 2JL, the first overcurrent relay 1JL, main overcurrent relay DJL, fourth line journey switch 4AK, third trip switch 3AK, the second travel switch 2AK and the first travel switch 1AK respectively, and the first travel switch 1AK connects through first normally closed contact 14 of safety switch SK and cart cam controller, first normally closed contact 15 of main hook cam controller and first normally closed contact 16 of dolly cam controller successively; First normally closed contact 16 of said dolly cam controller links to each other with first open contact 10 through the first start button QA1; Said first open contact 10 links to each other with second normally closed contact 21 of main hook cam controller through the second start button QA2, and second normally closed contact 21 of main hook cam controller links to each other with second normally closed contact 19 of the 9th travel switch ZXK, dolly cam controller and the 3rd normally closed contact 20 of dolly cam controller respectively; The 3rd normally closed contact 20 of said dolly cam controller links to each other with the 3rd normally closed contact 18 of cart cam controller through the 7th travel switch 1XXK, and the 3rd normally closed contact 18 of said cart cam controller links to each other corresponding to an end that links to each other with first normally closed contact 14 of cart cam controller with safety switch SK through the fifth line journey switch 1DXK and second open contact 11; Second normally closed contact 19 of dolly cam controller links to each other corresponding to an end that links to each other with the 3rd normally closed contact 18 of cart cam controller with the 7th travel switch 1XXK through the 8th travel switch 2XXK; The 3rd normally closed contact 18 of cart cam controller links to each other with the 6th travel switch 2DXK through second normally closed contact 17 of cart cam controller, and said the 6th travel switch 2DXK links to each other corresponding to an end that links to each other with fifth line journey switch 1DXK with second open contact 11 corresponding to the other end that links to each other with second normally closed contact 17 of cart cam controller.The 9th travel switch ZXK links to each other with X22, constitutes control loop.The said first start button QA1 links to each other with first fuse 12 corresponding to an end that links to each other with first open contact 10; The coil of contactless switch links to each other with second fuse 13 corresponding to the other end that links to each other with the 8th overcurrent relay 8JL; Be connected with corresponding power source bus through first fuse 12 and second fuse 13, constitute the control circuit loop.After safety switch SK closure; Main hook cam controller KTJ, cart cam controller KTD and dolly cam controller KTX be in interposition, and all overcurrent relays, travel switch are normal, press the first start button QA1 this moment after; The coil of contactless switch C is charged; After the coil of contactless switch C is charged, will make first open contact 10 and second open contact, 11 closures of contactless switch C, but because the existence of the second start button QA2; The self-locking circuit that first open contact 10 and second open contact are 11 can not be closed, thereby can guarantee the work safety of main hook.After pressing the second start button QA2, can the self-locking circuit of contactless switch C is closed, can guarantee the work safety of main hook cam controller KTJ.The first travel switch 1AK, the second travel switch 2AK, third trip are driven 3AK pass, fourth line journey switch 4AK, fifth line journey switch 1DXK, the 6th travel switch 2DXK, the 7th travel switch 1XXK, the 8th travel switch 2XXK and the 9th travel switch ZXK travel switch for existing crane in bridge type protection, and the installation site of said corresponding travel switch and function are all identical with existing design.
As shown in Figure 3: as to be the warning circuit schematic diagram of crane in bridge type.Said warning circuit comprises electric bell DL; Said electric bell DL links to each other with the secondary coil of voltage transformer KB through foot-operated switch DA and the 4th fuse 4RD; The primary coil of said voltage transformer KB links to each other with 380V voltage through the 3rd fuse 3RD, and voltage transformer KB can be reduced to 36V with 380V voltage.When stepping on foot-operated switch DA closure, the circuit closed at electric bell DL place, electric bell DL buzzing can the output alarm cue.
Like Fig. 1 ~ shown in Figure 3: during work, closed knife switch DK and contactless switch C; The closed then safety switch SK and the first start button QA1 make the coil of contactless switch C charged, first normally closed contact 10 of contactless switch C and second normally closed contact, 11 closures.At this moment, pressing the second start button QA2, making the self-locking circuit conducting of contactless switch C, can guarantee maloperation can not occur when main hook stops at upper limit, can prevent that the main hook high-altitude from falling.After the conducting of contactless switch C self-locking circuit, the action through corresponding cam controller control cam drive motor 1, trolley drive motor 4, the first cart drive motor 6 and the second cart drive motor 8 realizes the work of crane in bridge type.When main hook, dolly and cart motion and the corresponding formation of triggering switch, the self-locking circuit of contactless switch C breaks off, and can realize safe and reliable work; Simultaneously; When main hook drive motor 1, trolley drive motor 4, the first cart drive motor 6 and the second cart drive motor 8 are worked excess current; Green phase answers over current relay can break off equally and being connected of three phase mains, and guarantees the work safety of crane in bridge type.
The utility model increases by the second start button QA2 at the self-locking circuit of contactless switch C; Behind the closed safety switch SK and the first start button QA1; Need be through pressing the conducting that just can reach contactless switch C self-locking circuit behind the second start button QA2; Can avoid driving a vehicle the situation that maloperation causes the main hook high-altitude to be fallen occurs when main hook stops at upper limit, simple and compact for structure, has improved the safety of main hook work.
Claims (2)
1. the main hook protective circuit structure of a crane in bridge type comprises contactless switch, and said contactless switch has first open contact (10) and second open contact (11); Coil one end of said contactless switch is in series with the normally closed contact of the 8th overcurrent relay (8JL), the 7th overcurrent relay (7JL), the 6th overcurrent relay (6JL), the 5th overcurrent relay (5JL), the 4th overcurrent relay (4JL), the 3rd overcurrent relay (3JL), second overcurrent relay (2JL), first overcurrent relay (1JL), main overcurrent relay (DJL), fourth line journey switch (4AK), third trip switch (3AK), second travel switch (2AK) and first travel switch (1AK) respectively, and first travel switch (1AK) is connected with first normally closed contact (14) of cart cam controller, first normally closed contact (15) of main hook cam controller and first normally closed contact (16) of dolly cam controller through safety switch (SK) successively; First normally closed contact (16) of said dolly cam controller links to each other with first open contact (10) through first start button (QA1); It is characterized in that: said first open contact (10) links to each other with second normally closed contact (21) of main hook cam controller through second start button (QA2), and second normally closed contact (21) of main hook cam controller links to each other with second normally closed contact (19) of the 9th travel switch (ZXK), dolly cam controller and the 3rd normally closed contact (20) of dolly cam controller respectively; The 3rd normally closed contact (20) of said dolly cam controller links to each other with the 3rd normally closed contact (18) of cart cam controller through the 7th travel switch (1XXK), and the 3rd normally closed contact (18) of said cart cam controller links to each other corresponding to an end that links to each other with first normally closed contact (14) of cart cam controller with safety switch (SK) through fifth line journey switch (1DXK) and second open contact (11); Second normally closed contact (19) of dolly cam controller links to each other corresponding to an end that links to each other with the 3rd normally closed contact (18) of cart cam controller with the 7th travel switch (1XXK) through the 8th travel switch (2XXK); The 3rd normally closed contact (18) of cart cam controller links to each other with the 6th travel switch (2DXK) through second normally closed contact (17) of cart cam controller, and said the 6th travel switch (2DXK) links to each other corresponding to an end that links to each other with fifth line journey switch (1DXK) with second open contact (11) corresponding to the other end that links to each other with second normally closed contact (17) of cart cam controller.
2. the main hook protective circuit structure of crane in bridge type according to claim 1, it is characterized in that: said first start button (QA1) links to each other with first fuse (12) corresponding to an end that links to each other with first open contact (10); The coil of contactless switch links to each other with second fuse (13) corresponding to the other end that links to each other with the 8th overcurrent relay (8JL).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202853867U CN202265331U (en) | 2011-08-08 | 2011-08-08 | Main hook protecting circuit structure for bridge type crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202853867U CN202265331U (en) | 2011-08-08 | 2011-08-08 | Main hook protecting circuit structure for bridge type crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202265331U true CN202265331U (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202853867U Expired - Fee Related CN202265331U (en) | 2011-08-08 | 2011-08-08 | Main hook protecting circuit structure for bridge type crane |
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| Country | Link |
|---|---|
| CN (1) | CN202265331U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319664A (en) * | 2018-12-07 | 2019-02-12 | 中原起重机械科技股份有限公司 | A kind of suspension hook double girder overhead crane magnetic force control system |
-
2011
- 2011-08-08 CN CN2011202853867U patent/CN202265331U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319664A (en) * | 2018-12-07 | 2019-02-12 | 中原起重机械科技股份有限公司 | A kind of suspension hook double girder overhead crane magnetic force control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20140922 Granted publication date: 20120606 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20150322 Granted publication date: 20120606 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20140808 |
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| EXPY | Termination of patent right or utility model |