CN201999677U - Safety protecting device for electric hoist - Google Patents
Safety protecting device for electric hoist Download PDFInfo
- Publication number
- CN201999677U CN201999677U CN2011200799995U CN201120079999U CN201999677U CN 201999677 U CN201999677 U CN 201999677U CN 2011200799995 U CN2011200799995 U CN 2011200799995U CN 201120079999 U CN201120079999 U CN 201120079999U CN 201999677 U CN201999677 U CN 201999677U
- Authority
- CN
- China
- Prior art keywords
- electric block
- cable drum
- control loop
- steel wire
- wire rope
- 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 protecting device for an electric hoist. The electric hoist (9) comprises a motor (3), a speed reducer, a steel wire rope winding drum (1), a steel wire rope (2), a pulley and a hook (5), and also comprises a control loop. A protecting rod (4) is respectively arranged between the steel wire rope winding drum (1) with a semi-opening at one side face and the motor (3), as well as between the steel wire rope winding drum (1) and the speed reducer. The protecting rod (4) is arranged at the outside of the semi-opening of the steel wire rope winding drum (1) and is fixedly connected with the steel wire rope winding drum (1). With the adoption of the technical scheme, by changing the original electric control circuit and the manufacturing method of mechanical protecting, the protecting defects of the existing electric hoist are solved, the safety of the electric hoist is greatly improved, the complexity of the treatment is reduced, therefore, the influencing time is reduced, the safety protecting requirements of safe, convenient and low cost are achieved.
Description
Technical field
The utility model belongs to the technical field of handling machinery, and specifically, the utility model relates to a kind of electric block safety guard.
Background technology
In the prior art, general electric block all adopts liter spacing protected mode in top, and the prevention electric block rises the top.Existing liter top is spacing to be that mechanical type is spacing, is used with rope guide.There is following shortcoming in this protected mode:
Rope guide often damages in the work of reality, also just causes the spacing inefficacy that hoists, and does not have the safety guard-safeguard effect, easily causes suspension hook to rise the top, falls and hurts sb.'s feelings.For example:
Askew the skewing of electric block hung, and takes off groove, the wrong groove of steel rope after causing the steel rope rope guide to damage, be involved in the slit between motor and reel, reductor and the reel, just cause motor, reductor to be squeezed cracking easily, even squeeze out and fall, accident may cause casualties;
If rise spacing only the string on contactless for hoisting in top, warp after then steel rope lands says it is to descend in its tangible control of rising at this moment, and the spacing protection protective effect that do not have of then rising easily causes suspension hook to rise and pushes up, and falls and hurts sb.'s feelings; General suspension hook lands then, and warp all causes owing to following 3: 1, master cock is bad, and it is inseparable to descend; 2, personnel operation is improper, causes the decline button to press always; 3, the decline contactless switch is bonding.
Rise the spacing string in top on the master contacts, it is spacing that liter top is run in the suspension hook rising, and at this moment the car load outage will recover to use, and necessary elder generation seals spacing, allows suspension hook fall and do not reach a liter spacing place, top, recovers spacing again, rises and push up once, recover extremely loaded down with trivial details, loses time.
Because the hoist ceiling crane rope guide damages, the wrong groove of steel rope, cause gib head to rise top and motor, reductor the ftracture serious accident of falling and the generation of equipment breakdown.Similar accident takes place repeatedly at the factories and miness that use electric block.
The utility model content
Problem to be solved in the utility model provides a kind of electric block safety guard, its objective is the safety performance that improves electric block.
To achieve these goals, the technical scheme taked of the utility model is:
Electric block safety guard provided by the utility model; described electric block comprises motor, reductor, cable drum, steel rope, pulley and suspension hook; the control loop that also comprises electric block; between the described cable drum of side half opening and motor and a fender rod respectively is installed between described cable drum and the reductor; described fender rod is located at the outside at the half opening place of described cable drum, and with described cable drum for being fastenedly connected.
Described fender rod and described cable drum are detachable being fastenedly connected.
Described fender rod and described cable drum are for being welded to connect.
Fixed pulley side at described electric block is provided with spacing weight, and the weight limit switch is set in the control loop of described electric block, and described weight limit switch is connected in the contactless for hoisting control loop.
In the control loop of described electric block slug relay is set, described slug relay is arranged in the control loop of decline contactless switch.
It in the control loop of decline contactless switch is the open circuited normally closed interlock of time-delay that described slug relay is arranged on.
The utility model adopts technique scheme; by taking to change original electric control circuit and the method for making mechanical protection; solved the defective of existing electric block in protection; improved the safety performance of electric block greatly; and the complexity of reduction processing; thereby the reduction influence time reaches safety precaution requirement safe, convenient, with low cost.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification sheets and the mark among the figure are made brief description:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a control circuit scheme drawing of the present utility model.
Be labeled as among the figure:
1, cable drum, 2, steel rope, 3, motor, 4, fender rod, 5, suspension hook, 6, the control button box, 7, slug relay, 8, the weight limit switch, 9, electric block.
The specific embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and principle of work, the manufacturing process of the mutual alignment between the shape of the specific embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present utility model, technical scheme had more complete, accurate and deep understanding to help those skilled in the art.
Structure of the present utility model as shown in Figure 1; control circuit of the present utility model shown in Figure 2; the utility model is a kind of electric block safety guard; described electric block 9 comprises motor 3, reductor, cable drum 1, steel rope 2, pulley and suspension hook 5, also comprises the control loop of electric block.
The utility model discloses the CONFIG of machine-made method and electric reconstruction, comprise the selection and the implementation method of material.The utility model utilizes machinery and electrical means, in physical structure and electrical control, take measures, reach and suppress to take off groove after the frequent steel rope rope guide that occurs of general electric block damages, big, the pernicious accident that causes behind 5 liters of tops of suspension hook, and the influence that ordinary production is produced the long duration.
In order to solve the problem that exists at the described present known technology of this specification sheets background technology part and to overcome its defective, realize the goal of the invention of the safety performance of raising electric block, the technical scheme that the utility model is taked is:
Electric block safety guard provided by the utility model; between the described cable drum 1 of side half opening and motor 3 and a fender rod 4 respectively is installed between described cable drum 1 and the reductor; described fender rod 4 is located at the outside at the half opening place of described cable drum 1, and with described cable drum 1 for being fastenedly connected.
Fender rod 4 described in the utility model is detachable being fastenedly connected with described cable drum 1.
In that detouchable wire rope bar 4 is installed between the cable drum 1 and motor 3 of half opening, between cable drum 1 and the reductor, be the fender rod of making of screw-thread steel 4.Even rope guide damages, steel rope 2 takes off groove, after running into fender rod 4, can twine in the middle of reel by automatic reversing sense, and can not cause steel rope 4 to clamp-on between cable drum 1 and motor 3 or the reductor, causes great safety, equipment breakdown.
The machinery production of fender rod 4: with round steel or the screw-thread steel of two about 20mm of diameter, concrete length is measured voluntarily according to cable drum 1 openings of sizes, attaches it to reel aperture position between cable drum 1 and motor 3, cable drum 1 reductor with the fixed form of pressing plate.Round steel or screw-thread steel diameter are suitable, and the installation site is appropriate, accomplishes easy installation and removal.
Do not adopt welding this moment, be convenient to dismounting, because more will be with its removal during change steel rope.
Another scheme is:
Fender rod 4 described in the utility model and described cable drum 1 are for being welded to connect.
At fender rod 4 of making of screw-thread steel of welding between the cable drum 1 and motor 3 of half opening, between cable drum 1 and the reductor, even rope guide damages, steel rope 2 takes off groove, after running into fender rod 4, can automatic reversing sense on steel cable around the second layer, and can not cause steel rope 2 to clamp-on between cable drum 1 and motor 3 or the reductor, cause big accident.
The machinery production of fender rod 4 of this moment: look for two round steel or screw-thread steels (concrete size is measured voluntarily according to electric block cable drum 1 openings of sizes) that are about 30cm, be welded between cable drum 1 and the motor 3, the reel aperture position between cable drum 1 and the reductor.The fender rod 4 of screw-thread steel is of convenient length, and the position of weld is appropriate, firm welding.Round steel or screw-thread steel diameter are suitable, and the installation site is appropriate.
Fixed pulley side at described electric block 9 is provided with spacing weight, and weight limit switch 8 is set in the control loop of described electric block, and described weight limit switch 8 is connected in the contactless for hoisting control loop.This switch adopts its normally closed interlock, i.e. SQH among the figure.
As shown in Figure 2, it is spacing to install weight additional in electric block fixed pulley side, at first in fixed pulley side mounting seat, uses LX series weight limit mounting to base again, and to spacing position, circuit is connected in series in the contactless for hoisting control loop with the weight height adjustment.Contactless for hoisting i.e. KM2 among the figure.
The weight limit mounting is firm, and height adjustment is suitable.
Slug relay 7 is set in the control loop of electric block 9 described in the utility model, and described slug relay 7 is arranged in the control loop of decline contactless switch.
From electric improvement control loop, at first still use position, ceiling control contactless for hoisting, general suspension hook 5 land then warp all since following three problems cause: 1, master cock is bad, and it is inseparable to descend; 2, personnel operation is improper, causes the decline button to press always; 3, the decline contactless switch is bonding.
At above three analyses of causes, at first problem analysis 1 and problem 2 belong to same reason, all are the problems of control button.
For this reason, add an open circuited relay of time-delay at the control loop that contacts that descends, stipulate that each operation must not surpass 1 minute, this time can set up on their own after striding high calculating.When pressing the decline of decline push-botton operation after one minute, even your decline button or down state, the decline contactless switch also disconnects, dead electricity, and decline stops.That is to say that electric block 9 each step-down operations have been given time qualified, do not allow its continuous running.
Problem analysis 3 once more, it is also bonding that this problem also may extend into contactless for hoisting, general electric block also has design in this respect, a shift knob is arranged on electric block 9 handles, be used for controlling specially main contactor, when finding that the operation lifting is malfunctioning, as long as press stop button, the main contactor dead electricity, the car load dead electricity.Inspection disposes, as long as press the start button on the control handle, main contactor gets electric, and car load gets electric, recovers normal.
Concrete grammar is: find the decline contactless switch in electric block control button box 6, i.e. KM3 among the figure, look for a time relay again, with its open circuited normally closed interlock of delaying time, promptly the 3LSJ among the figure seals in decline contactor control loop, main contactor control loop and handle implementation method, general electric block all has design in this respect, does not do elaboration here.
The time relay time selection is suitable, gets the time-delay of electric back and disconnects instantaneous closure after the dead electricity.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.
Claims (6)
1. electric block safety guard; described electric block (9) comprises motor (3), reductor, cable drum (1), steel rope (2), pulley and suspension hook (5); the control loop that also comprises electric block; it is characterized in that: between the described cable drum (1) of side half opening and motor (3) and between described cable drum (1) and the reductor fender rod (4) is installed respectively; described fender rod (4) is located at the outside at the half opening place of described cable drum (1), and with described cable drum (1) for being fastenedly connected.
2. according to the described electric block safety guard of claim 1, it is characterized in that: described fender rod (4) is detachable being fastenedly connected with described cable drum (1).
3. according to the described electric block safety guard of claim 1, it is characterized in that: described fender rod (4) and described cable drum (1) are for being welded to connect.
4. according to the described electric block safety guard of claim 1; it is characterized in that: the fixed pulley side at described electric block (9) is provided with spacing weight; weight limit switch (8) is set in the control loop of described electric block, and described weight limit switch (8) is connected in the contactless for hoisting control loop.
5. according to the described electric block safety guard of claim 1, it is characterized in that: slug relay (7) is set in the control loop of described electric block, and described slug relay (7) is arranged in the control loop of decline contactless switch.
6. according to the described electric block safety guard of claim 5, it is characterized in that: it in the control loop of decline contactless switch is the open circuited normally closed interlock of time-delay that described slug relay (7) is arranged on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200799995U CN201999677U (en) | 2011-03-24 | 2011-03-24 | Safety protecting device for electric hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200799995U CN201999677U (en) | 2011-03-24 | 2011-03-24 | Safety protecting device for electric hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201999677U true CN201999677U (en) | 2011-10-05 |
Family
ID=44702424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200799995U Expired - Fee Related CN201999677U (en) | 2011-03-24 | 2011-03-24 | Safety protecting device for electric hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201999677U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190260A (en) * | 2011-03-24 | 2011-09-21 | 芜湖新兴铸管有限责任公司 | Safety protection device of electric hoist |
| CN103332622A (en) * | 2013-07-02 | 2013-10-02 | 中科华核电技术研究院有限公司 | Electric block for operation of nuclear fuel assembly |
| CN114524379A (en) * | 2022-03-13 | 2022-05-24 | 新疆德勤互力工业技术有限公司 | Anti-backrush interlocking protection device for steel wire rope of crane hoisting mechanism |
-
2011
- 2011-03-24 CN CN2011200799995U patent/CN201999677U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190260A (en) * | 2011-03-24 | 2011-09-21 | 芜湖新兴铸管有限责任公司 | Safety protection device of electric hoist |
| CN103332622A (en) * | 2013-07-02 | 2013-10-02 | 中科华核电技术研究院有限公司 | Electric block for operation of nuclear fuel assembly |
| CN103332622B (en) * | 2013-07-02 | 2016-07-13 | 中科华核电技术研究院有限公司 | Nuclear fuel assembly transhipment electric block |
| CN114524379A (en) * | 2022-03-13 | 2022-05-24 | 新疆德勤互力工业技术有限公司 | Anti-backrush interlocking protection device for steel wire rope of crane hoisting mechanism |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20180324 |