CN202116226U - Ratchet wheel and pawl non-return device of lifting mechanism of crane - Google Patents
Ratchet wheel and pawl non-return device of lifting mechanism of crane Download PDFInfo
- Publication number
- CN202116226U CN202116226U CN2011201853357U CN201120185335U CN202116226U CN 202116226 U CN202116226 U CN 202116226U CN 2011201853357 U CN2011201853357 U CN 2011201853357U CN 201120185335 U CN201120185335 U CN 201120185335U CN 202116226 U CN202116226 U CN 202116226U
- Authority
- CN
- China
- Prior art keywords
- pawl
- ratchet
- ratchet wheel
- bracket
- hook
- 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 a ratchet wheel and pawl non-return device of a lifting mechanism of a crane, relating to a ratchet wheel and pawl device. The ratchet wheel and pawl non-return device solves the problem that the existing device can not realize automatic separation and meshing of the ratchet wheel and the pawl, so that potential safety hazards exist. The ratchet wheel and pawl non-return device comprises a ratchet wheel and a pawl device, wherein the pawl device consists of a pawl, an electric pushing rod, a telescopic spring, a hook, a shaft and a bracket; the bracket is composed of two bracket sideboards and a connecting piece; the pawl is in a T shape formed by a pawl head, a pawl tail part and a pawl rod part; the middle part of the pawl is articulated between the two bracket sideboards by the shaft; the pawl tail part is connected with one end of the telescopic spring; the other end of the telescopic spring is fixed on the bracket by the hook; the pawl rod part is articulated with the electric pushing rod; and the electric pushing rod is arranged on the bracket sideboards by a trunnion of the electric pushing rod. The ratchet wheel and pawl non-return device is used for the lifting mechanism of the crane, so that the non-return controlling is safer and more reliable.
Description
Technical field
The utility model relates to click apparatus, particularly a kind of click apparatus that is used for crane hoisting mechanism.
Background technology
Click apparatus is widely used in mechanical equipment as the holdback (stopper perhaps stops fender guard) of mechanism.Though most click apparatus can be realized stopping, defencive function, can not well realize the automatic disengaging and the engagement of ratchet and ratchet.When ratchet when ratchet back of tooth direction is slided, if ratchet can not in time automatically reset,, exist potential safety hazard for the crane hoisting mechanism of click apparatus as holdback.
Summary of the invention
The purpose of the utility model is to overcome the shortcoming of prior art, and a kind of click holdback of crane hoisting mechanism is provided, and solves automatic disengaging and engagement that existing apparatus can not well be realized ratchet and ratchet, exists the problem of potential safety hazard.
The utility model is realized its goal of the invention through following technical scheme.
A kind of click holdback of crane hoisting mechanism; Comprise: be installed on the ratchet of lifting mechanism reel afterbody, the pawl device with ratchet engaged is characterized in that: said pawl device is made up of ratchet, electric pushrod, coil tension spring, hook, axle, support; Said support is made up of two rack side plates and attaching parts; Said ratchet constitutes the T shape by ratchet head, ratchet afterbody, pawl bar portion, and the middle part of said ratchet is through said centre that is hinged on two said rack side plates, and said ratchet afterbody is connected with an end of said coil tension spring; The other end of said coil tension spring is connected with said hook; Said hook is fixed on the said support through nut, and said pawl bar portion and said electric pushrod are hinged, and said electric pushrod is installed on the said rack side plate through its gudgeon.
Be respectively equipped with slotted hole on two said rack side plates, the gudgeon of said electric pushrod can slide in said slotted hole; The length of said slotted hole can make said ratchet head withdraw from ratchet.
The utility model and prior art relatively because pawl device is provided with coil tension spring, and connect electric pushrod in the slotted hole on rack side plate; When the ratchet left-hand revolution, hook tooth produces clickwise power to ratchet, simultaneously; Coil tension spring is stretched, and the convergent force of coil tension spring makes the automatic left-hand revolution of ratchet, and the electric pushrod that links to each other with ratchet can be slided in the slotted hole on rack side plate; Like this, ratchet can automatically reset through coil tension spring.When ratchet need withdraw from ratchet, control desk provided instruction, let electric pushrod stretch out, and promoted pawl bar portion, and made the convergent force of its thrust greater than coil tension spring, forced ratchet to right-hand revolution, can break away from ratchet automatically.Therefore, the utility model has well been realized the automatic disengaging and the engagement of ratchet and ratchet, makes the check control of crane hoisting mechanism more safe and reliable.
Description of drawings
Fig. 1 is the installation site scheme drawing (front view) of the utility model;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3 is the cutaway view of pawl device;
Fig. 4 is the lateral plan of Fig. 3;
Fig. 5 is the front view of rack side plate.
The utility model is further described through preferred embodiment below in conjunction with accompanying drawing.
The specific embodiment
Like Fig. 1,2,3, shown in 4, a kind of click holdback of crane hoisting mechanism by the ratchet 1 that is installed on lifting mechanism reel 3 afterbodys, is formed with ratchet 1 ingear pawl device 2.Said pawl device 2 is made up of ratchet 4, electric pushrod 5, coil tension spring 6, hook 7, axle 8, support 9; Said support 9 is made up of two rack side plates 10 and attaching parts; Said ratchet 4 constitutes the T shape by ratchet head 4-1, ratchet afterbody 4-2, the 4-3 of pawl bar portion; The middle part of said ratchet 4 is hinged on the centre of two said rack side plates 10 through said axle 8; Said ratchet afterbody 4-2 is connected with an end of said coil tension spring 6, and the other end of said coil tension spring 6 is connected with said hook 7, and said hook 7 is fixed on the said support 9 through nut; Said pawl bar 4-3 of portion and said electric pushrod 5 are hinged, and said electric pushrod 5 is installed on the said rack side plate 10 through its gudgeon 5-1.
Like Fig. 4, shown in 5, be respectively equipped with slotted hole 10-1 on two said rack side plates 10, the gudgeon 5-1 of said electric pushrod 5 can slide in said slotted hole 10-1; The length of said slotted hole 10-1 can make said ratchet head 4-1 withdraw from ratchet 1.
The working process of the utility model:
When ratchet 1 left-hand revolution, the hook tooth that contacts with ratchet 4 produces clickwise power for ratchet 4, and ratchet 4 can withdraw from ratchet 1 under the effect of this power, and coil tension spring 6 is stretched, and this moment, the convergent force of coil tension spring 6 made ratchet 4 automatic left-hand revolutions.Because ratchet 4 rotates, the electric pushrod 5 that links to each other with ratchet 4 can slide in the slotted hole 10-1 on the rack side plate 10 simultaneously, and like this, ratchet 4 can automatically reset through coil tension spring 6.When ratchet 4 need withdraw from ratchet 1, control desk provided instruction, and electric pushrod 5 stretches out automatically, made ratchet 4 clickwises (at this moment, the thrust of electric pushrod 5 should greater than the convergent force of coil tension spring 6), and ratchet 4 can break away from ratchet 1 automatically.
Claims (2)
1. the click holdback of a crane hoisting mechanism; Comprise: the ratchet (1) that is installed on lifting mechanism reel (3) afterbody; With ratchet (1) ingear pawl device (2); It is characterized in that: said pawl device (2) is made up of ratchet (4), electric pushrod (5), coil tension spring (6), hook (7), axle (8), support (9), and said support (9) is made up of two rack side plates (10) and attaching parts, and said ratchet (4) constitutes the T shape by ratchet head (4-1), ratchet afterbody (4-2), pawl bar portion (4-3); The middle part of said ratchet (4) is hinged on the centre of two said rack side plates (10) through said axle (8); Said ratchet afterbody (4-2) is connected with an end of said coil tension spring (6), and the other end of said coil tension spring (6) is connected with said hook (7), and said hook (7) is fixed on the said support (9) through nut; Said pawl bar portion (4-3) is hinged with said electric pushrod (5), and said electric pushrod (5) is installed on the said rack side plate (10) through its gudgeon.
2. according to the click holdback of the described crane hoisting mechanism of claim 1; It is characterized in that: be respectively equipped with slotted hole (10-1) on two said rack side plates (10), the gudgeon (5-1) of said electric pushrod (5) can slide in said slotted hole (10-1); The length of said slotted hole (10-1) can make said ratchet head (4-1) withdraw from ratchet (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201853357U CN202116226U (en) | 2011-05-31 | 2011-05-31 | Ratchet wheel and pawl non-return device of lifting mechanism of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201853357U CN202116226U (en) | 2011-05-31 | 2011-05-31 | Ratchet wheel and pawl non-return device of lifting mechanism of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202116226U true CN202116226U (en) | 2012-01-18 |
Family
ID=45457309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201853357U Expired - Lifetime CN202116226U (en) | 2011-05-31 | 2011-05-31 | Ratchet wheel and pawl non-return device of lifting mechanism of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202116226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106672830A (en) * | 2016-12-29 | 2017-05-17 | 意宁液压股份有限公司 | Built-in type hydraulic winch structure |
-
2011
- 2011-05-31 CN CN2011201853357U patent/CN202116226U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106672830A (en) * | 2016-12-29 | 2017-05-17 | 意宁液压股份有限公司 | Built-in type hydraulic winch structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |
|
| CX01 | Expiry of patent term |