CN2226586Y - Switch of hoisting machinery for preventing rope overwinding - Google Patents
Switch of hoisting machinery for preventing rope overwinding Download PDFInfo
- Publication number
- CN2226586Y CN2226586Y CN95236645U CN95236645U CN2226586Y CN 2226586 Y CN2226586 Y CN 2226586Y CN 95236645 U CN95236645 U CN 95236645U CN 95236645 U CN95236645 U CN 95236645U CN 2226586 Y CN2226586 Y CN 2226586Y
- Authority
- CN
- China
- Prior art keywords
- push rod
- contact
- housing
- steel rope
- overwinding
- 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 - Lifetime
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Abstract
The utility model discloses the technical proposal of a switch used for preventing the overwinding of a steel cable of a hoisting machine. A pair of electric apparatus contact heads composed of a moveable contact head and a fixed contact head, and a post rod device used for controlling the actions of an electric apparatus contact head are arranged in the same housing body, wherein, the push rod device is composed of a supporting seat, a pressing reed, and a push rod with a pressure spring cover. One end of the push rod is arranged below a moveable reed, and the other end used for hanging articles extends out of the housing body and is connected with an additional matched heavy hammer. The utility model has the characteristics of direct action of the operating force, few transfer link, fast, agile and reliable action reflection, strong impacting force resistance, and good waterproof sealing property.
Description
The utility model relates to a kind of elevator machinery steel rope overwinding-proof switch, and the steel rope pulleying that is mainly used in elevator machinery is spacing.
The elevator machinery steel rope overwinding-proof of prior art mainly is that the leverage that utilizes a micro-switch to add a cover control micro-switch is again realized.Except being arranged, electrical contact also has a cover mechanical action transfer device in the above-mentioned micro-switch, this micro-switch is because the limitation of this body structure can not be directly used in anti-steel rope pulleying, be used and then make capable transmission intermediate link many with the lever machinery of its action of control, cause operational motion slow, sensitieness is poor, particularly can not prevent exterior unexpected impulsive force effectively, be in operation that micro-switch usually damages therefrom.The steel rope stop overwind device of said structure can not satisfy that the spacing need response speed of elevator machinery steel rope is fast, flexible operation, highly sensitive, safe and reliable requirement.
The purpose of this utility model is to provide a kind of electrical contact and mechanical pin-lift arrangement is all placed in the same housing, is subjected to the pin-lift arrangement of external force effect can direct control electrical contact break-make and flexible movements, safe and reliable, highly sensitive elevator machinery steel rope overwinding-proof switch.
Technical solution of the present utility model is: the electrical contact that will be made up of dynamic and static contact and the pin-lift arrangement of control apparatus contact place same housing, one end of pin-lift arrangement push rod places the movable contact spring below of electrical contact, and another extension thing end of push rod then stretches out the outer weight of preparing with other of housing and links to each other.
Described pin-lift arrangement comprises the bearing that is fixed on the housing, place the stage clip of bearing and have the push rod of pressure spring plate.
The moving contact of described electrical contact and static contact are fixed on the sidewall in the housing by movable contact spring and stationary contact headstock respectively.Be provided with source terminal of electric power in this bearing.Side at housing also is provided with the power lead hole.Pull back spring one end that is located at case top links to each other with movable contact spring.
The utility model has the advantages that: without micro-switch, and with a pair of electrical contact as switch, directly electrical contact is controlled with pin-lift arrangement, adopt pull back spring to link to each other with movable contact spring simultaneously, compare with the secondary control mode of prior art, the effect of power is direct, intermediate link is few, the action reflection is fast, flexibility and reliability, and impulsive force is strong suddenly in anti-outside, integral structure is simple, good airproof performance, water-proofness is strong, and obviously improve service life.
Accompanying drawing is the utility model integral structure scheme drawing.
Below in conjunction with accompanying drawing the utility model most preferred embodiment is further described: in housing (1), be provided with electrical contact and the pin-lift arrangement of forming by dynamic and static contact.The movable contact spring (2) that connects moving contact (3) is separately fixed on the two side of housing with the stationary contact headstock (5) that is connected static contact (4), also is respectively equipped with wiring pile (11), (15) in bearing.Pin-lift arrangement is made up of bearing (6), stage clip (10) and the push rod (13) that has a stage clip lid (14), stage clip places in the bearing, push rod then is in the stage clip, and its end places the below of movable contact spring (2), and another extension thing end (8) then stretches out housing and can link to each other with the weight of outside preparation.Pull back spring (12) one ends that are located at the housing inner top link to each other with movable contact spring.The cover plate (9) that be provided with power lead hole (7) in the housing side, has a seal ring by screw with housings close.
During use, hang the thing end at push rod and hang up weight, be connected with the lifting appliance steel rope of elevator machinery then.Under the effect of weight, push rod is descending, the stage clip compression, and it is spacing to run into bearing until the stage clip lid.Meanwhile, under the effect of pull back spring, the movable contact spring of electrical contact makes moving contact and static contact closed contact.Energized, the lifting appliance operation is rolled up on the steel rope, hangs thing and rises.When steel rope rises to certain altitude, when suspension hook bumps against weight, weight is by suspension hook jack-up, and push rod loses toward drop-down gravity, and is up under the effect of stage clip, until pushing up movable contact spring, the movable contact spring action makes moving contact leave static contact, and power supply is cut off, and lifting appliance stops action, steel rope is no longer gone up volume, has promptly reached the purpose spacing to the steel rope pulleying.Lose the return effect of understanding owing to stage clip behind the pulling force of weight when push rod and produce a unexpected impulsive force that makes progress, at this moment, because the buffer action of pull back spring, this power can not cause the damage to movable contact spring or housing.
Claims (4)
1, a kind of elevator machinery steel rope overwinding-proof switch, comprise housing (1), place the electrical contact in the housing, it is characterized in that in housing, also being provided with the pin-lift arrangement of control apparatus contact, push rod (13) one ends of pin-lift arrangement place the below of electrical contact movable contact spring (2), and another extension thing end (8) of push rod then is in the outer weight of preparing with other of housing and is connected.
2, steel rope overwinding-proof switch according to claim 1 is characterized in that pin-lift arrangement comprises bearing (6), the stage clip (10) that places bearing that is fixed on the housing (1) and has the push rod (13) that stage clip covers (14).
3, steel rope overwinding-proof switch according to claim 1 is characterized in that electrical contact comprises moving contact (3), static contact (4), and moving contact and static contact are fixed on the interior sidewall of housing by movable contact spring (2) and stationary contact headstock (5) respectively.
4, steel rope overwinding-proof switch according to claim 3 is characterized in that pull back spring (12) one ends that are located at case top link to each other with movable contact spring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95236645U CN2226586Y (en) | 1995-04-19 | 1995-04-19 | Switch of hoisting machinery for preventing rope overwinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95236645U CN2226586Y (en) | 1995-04-19 | 1995-04-19 | Switch of hoisting machinery for preventing rope overwinding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2226586Y true CN2226586Y (en) | 1996-05-08 |
Family
ID=33879592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95236645U Expired - Lifetime CN2226586Y (en) | 1995-04-19 | 1995-04-19 | Switch of hoisting machinery for preventing rope overwinding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2226586Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109230932A (en) * | 2017-07-10 | 2019-01-18 | 广元公正科技有限公司 | A kind of elevator for the computer-controlled vertical lift that floor uses only stops equipment |
| CN109230931A (en) * | 2017-07-10 | 2019-01-18 | 广元公正科技有限公司 | A kind of elevator for the vertical lift that construction site uses only stops equipment |
| CN112079224A (en) * | 2020-09-21 | 2020-12-15 | 中国五冶集团有限公司 | Hanging flower basket travel limit switch protector |
-
1995
- 1995-04-19 CN CN95236645U patent/CN2226586Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109230932A (en) * | 2017-07-10 | 2019-01-18 | 广元公正科技有限公司 | A kind of elevator for the computer-controlled vertical lift that floor uses only stops equipment |
| CN109230931A (en) * | 2017-07-10 | 2019-01-18 | 广元公正科技有限公司 | A kind of elevator for the vertical lift that construction site uses only stops equipment |
| CN112079224A (en) * | 2020-09-21 | 2020-12-15 | 中国五冶集团有限公司 | Hanging flower basket travel limit switch protector |
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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 | ||
| CX01 | Expiry of patent term |