CN201942464U - Safety device for electric hoist - Google Patents
Safety device for electric hoist Download PDFInfo
- Publication number
- CN201942464U CN201942464U CN2010206989679U CN201020698967U CN201942464U CN 201942464 U CN201942464 U CN 201942464U CN 2010206989679 U CN2010206989679 U CN 2010206989679U CN 201020698967 U CN201020698967 U CN 201020698967U CN 201942464 U CN201942464 U CN 201942464U
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- CN
- China
- Prior art keywords
- travel switch
- electric block
- motor
- safety device
- clump weight
- 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 safety device of an electric hoist. The safety device comprises a main body of the electric hoist and a travel switch (7), wherein the main body of the electric hoist comprises a rope guide device (3), a motor (6) and a hook (10), the travel switch (7) is arranged at the lower end of a rope outlet end of the rope guide device (3) and is fixedly connected with the rope guide device (3), an output contact of the travel switch (7) is connected with the hook (10) in a contact manner, and the travel switch (7) is connected with a power wire of the motor (6), thereby improving the safety performance of the electric hoist.
Description
One, technical field
The utility model product is a kind of safety device that is used for electric block, especially a kind of safety device of electric block of the hoisting crane that is applicable to medium and small tonnage.
Two, background technology
In industry-by-industry; in order to finish the transfer of material; often need material to lift by crane; therefore hoisting crane is an important mechanical equipment; electric block is the main function parts of hoisting crane; the safety device of electric block is an important link that guarantees the safety of hoisting crane; safety device at existing electric block all is to use rope guide to touch the cutoff switch; thereby electrical motor is shut down; because what hoisting crane was regular carries out operation; it is very high to make electrical motor disconnect the startup frequency, uses the reliability of individual event safety device not high.
Three, summary of the invention
In order to overcome above-mentioned technical disadvantages, the purpose of the utility model product provides a kind of safety device that is used for electric block, has improved the safety performance of electric block.
In order to achieve the above object, the technical scheme that the utility model is taked is: the body and the travel switch that include electric block, the body of electric block is set to include rope guide, motor and suspension hook, travel switch be arranged on rope guide leading-out terminal downside and be set to connect with the rope guide fixed type, the output contact of travel switch is set to connect with the suspension hook contact, and travel switch is set to be connected with the power lead of motor.
When using the body hoisting heavy of electric block; suspension hook rises when being raised to the housing certain distance; suspension hook produces a signal to travel switch; travel switch cuts off the power lead of motor, and motor is shut down, and makes no longer upward movement of suspension hook; owing to designed travel switch; make suspension hook produce signal, motor is stopped operating, therefore improved the safety performance of electric block travel switch.
The utility model has designed, and also includes connection cord and clump weight, and clump weight is provided with central through hole, and the steel rope of the body of electric block is arranged in the through hole of clump weight, and clump weight is set to connect with the contact end of travel switch by connection cord.
The utility model has designed, and clump weight is set to left and right sides two parts and its left and right sides two parts are set to pass through Bolt Connection.
The utility model has designed, and the point of connection of the power lead of travel switch and motor is arranged on the front side of point of connection of the power lead of cutoff switch and motor.
The utility model has designed, and the length of connection cord is set to 100-150mm.
Four, description of drawings
Accompanying drawing is a scheme drawing of the present utility model.
Five, the specific embodiment
Accompanying drawing is an embodiment of the present utility model, in conjunction with specifying present embodiment in conjunction with the accompanying drawings, include housing 1, barrel 2, rope guide 3, steel rope 4, cutoff switch 5, motor 6, travel switch 7, connection cord 8, clump weight 9 and suspension hook 10, housing 1, barrel 2, rope guide 3, steel rope 4, cutoff switch 5, motor 6 and suspension hook 10 have been set to form the body of electric block, barrel 2 is arranged in the housing 1, barrel 2 is set to connect with housing 1 rotary type, one end of barrel 2 is set to connect with the output shaft of motor 6, barrel 2 is provided with the steel rope 4 of winding arranged side by side, one end of steel rope 4 is set to be fixedly connected with barrel 2, the other end is set to be fixedly connected with suspension hook 10, rope guide 3 is set to connect with barrel 2 sleeve types, rope guide 3 is provided with groove and steel rope 4 and is set to go here and there the groove of rope guide 3, upper end at rope guide 3 is provided with flange, the flange that housing 1 is provided with groove and rope guide 3 is arranged in the groove of housing 1, the flange contact that the contact of cutoff switch 5 is set to rope guide 3 connects, cutoff switch 5 is set to be connected with the power lead of motor 6, travel switch 7 be arranged on rope guide 3 leading-out terminal downside and be set to connect with rope guide 3 fixed types, clump weight 9 is provided with central through hole, steel rope 4 is arranged in the through hole of clump weight 9, clump weight 9 is set to connect by the contact end of connection cord 8 with travel switch 7, clump weight 9 is set to connect with suspension hook 10 contacts, and travel switch 7 is set to be connected with the power lead of motor 6.
In the present embodiment, clump weight 9 is set to left and right sides two parts and its left and right sides two parts and is set to pass through Bolt Connection.
In the present embodiment, the point of connection of travel switch 7 and the power lead of motor 6 is arranged on the front side of cutoff switch 5 and the point of connection of the power lead of motor 6.
In the present embodiment, the length of connection cord 8 is set to 150mm.
When using the body hoisting heavy of electric block; when 10 on suspension hook was raised to housing 1 certain distance, suspension hook 10 held up clump weight 9, produced a signal by 9 pairs of travel switches of clump weight 7; travel switch 7 cuts off the power lead of motor 6; motor 6 is shut down, make no longer upward movement of suspension hook 10, when motor 6 does not stop; rope guide 3 moves to an end of barrel 2; 3 pairs of cutoff switches of rope guide 5 produce a signal, and cutoff switch 5 cuts off the power lead of motor 6 once more, have more guaranteed motor 6 shutdown.
Second embodiment of the present utility model, the length of connection cord 8 is set to 100mm.
Second embodiment of the present utility model, the length of connection cord 8 is set to 130mm.
The utlity model has following characteristics:
1, owing to designed travel switch 7, makes 10 pairs of travel switches of suspension hook 7 produce signal, motor 6 is stopped operating, therefore improved the safety performance of electric block.
2, owing to designed connection cord 8 and clump weight 9, clump weight 9 and travel switch 7 are flexibly connected, be more suitable for the characteristic of steel rope 4, guaranteed the signal accuracy of travel switch 7.
3, owing to designed travel switch 7, connection cord 8 and clump weight 9, make the safety that passes through rope guide 3 and cutoff switch 5 of electric block be the safety device second time, make the safety of travel switch 7, connection cord 8 and clump weight 9 be the safety device first time, guarantee the reliability of service of safety device for the second time, improved to globality the safety performance of electric block.
4, owing to designed travel switch 7, connection cord 8 and clump weight 9, make travel switch 7 installation and maintenance convenient, cost is low.
In being used for the technical field of safety devices of electric block; Every body that includes electric block is set to include rope guide 3, motor 6 and suspension hook 10; travel switch 7 be arranged on rope guide 3 leading-out terminal downside and be set to connect with rope guide 3 fixed types; the output contact of travel switch 7 is set to connect with suspension hook 10 contacts, and travel switch 7 is set to power lead bonded assembly technology contents with motor 6 all in protection domain of the present utility model.
Claims (5)
1. safety device that is used for electric block; It is characterized in that: the body and the travel switch (7) that include electric block, the body of electric block is set to include rope guide (3), motor (6) and suspension hook (10), travel switch (7) be arranged on rope guide (3) leading-out terminal downside and be set to connect with rope guide (3) fixed type, the output contact of travel switch (7) is set to connect with suspension hook (10) contact, and travel switch (7) is set to be connected with the power lead of motor (6).
2. the safety device that is used for electric block according to claim 1; It is characterized in that: also include connection cord (8) and clump weight (9), clump weight (9) is provided with central through hole, the steel rope of the body of electric block (4) is arranged in the through hole of clump weight (9), and clump weight (9) is set to connect by the contact end of connection cord (8) with travel switch (7).
3. the safety device that is used for electric block according to claim 2; It is characterized in that: clump weight (9) is set to left and right sides two parts and its left and right sides two parts are set to pass through Bolt Connection.
4. the safety device that is used for electric block according to claim 2; It is characterized in that: the point of connection of the power lead of travel switch (7) and motor (6) is arranged on the front side of cutoff switch (5) and the point of connection of the power lead of motor (6).
5. the safety device that is used for electric block according to claim 2; It is characterized in that: the length of connection cord (8) is set to 100-150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206989679U CN201942464U (en) | 2010-12-30 | 2010-12-30 | Safety device for electric hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206989679U CN201942464U (en) | 2010-12-30 | 2010-12-30 | Safety device for electric hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201942464U true CN201942464U (en) | 2011-08-24 |
Family
ID=44469812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206989679U Expired - Fee Related CN201942464U (en) | 2010-12-30 | 2010-12-30 | Safety device for electric hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201942464U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070101A (en) * | 2010-12-30 | 2011-05-25 | 郭德党 | Safety device for electric block |
-
2010
- 2010-12-30 CN CN2010206989679U patent/CN201942464U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070101A (en) * | 2010-12-30 | 2011-05-25 | 郭德党 | Safety device for electric block |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20111230 |