CN203419710U - Brake mechanism of winch - Google Patents
Brake mechanism of winch Download PDFInfo
- Publication number
- CN203419710U CN203419710U CN201320551029.XU CN201320551029U CN203419710U CN 203419710 U CN203419710 U CN 203419710U CN 201320551029 U CN201320551029 U CN 201320551029U CN 203419710 U CN203419710 U CN 203419710U
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- Prior art keywords
- gear
- output shaft
- nut
- friction lining
- friction
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Abstract
The utility model discloses a brake mechanism of a winch. The brake mechanism comprises a shaft end cap, an output shaft and a first nut gear, wherein the shaft end cap is fixed on a transmission shell and provided with a brake chamber, and the first nut gear is in screw joint with the output shaft. A friction disc is fixed at one end, pivoted into the brake chamber, of the output shaft, a one-way clutch is arranged on the output shaft, a first friction plate used for being in contact with the friction disc is arranged on one side of the one-way clutch, and a second friction plate used for being in contact with the first nut gear is arranged on the other side of the one-way clutch. The brake mechanism has the advantages that when the brake mechanism is in the brake state, the first and second friction plates, the one-way clutch and a face plate of the output shaft are tightly pressed by the transmission nut gears; due to one-way rotation of the one-way clutch, frictional force between the one-way clutch and the first friction plate and frictional force between the first friction plate and the face plate of the output shaft, the output shaft and the one-way clutch are synchronized to achieve braking, and reliability in braking is good.
Description
Technical field
The utility model relates to a kind of stop mechanism, especially relates to a kind of stop mechanism that twists grinding machine.
Background technology
Strand grinding machine is the conventional machinery of the work progress such as equipment lift heavy, power engineering, fishing boat folding and unfolding net.The reliability of its stop mechanism is the guarantee of construction safety.The stop mechanism of existing strand grinding machine is by ratchet, contact and be fixed on the ratchet on pawl axis with ratchet, the a pair of gear that screw thread pair by separately spins together, the compositions such as friction disc, on the axle bed of gear, be fixed with copper sheathing, friction lining, ratchet are installed successively on copper sheathing, described friction disc is fixed on gear, the card of friction disc contacts with friction lining, and friction lining is pressed between gear, ratchet.The stop mechanism of this strand grinding machine adopts ratchet, ratchet braking, there is stressed too concentrated problem, ratchet can only the tooth of supporting on ratchet, easily there is collapsing tooth, in addition when high speed ratchet be difficult to even cannot supporting on ratchet, braking exists uncertain, easily causes the accident, and urgently improves.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of stop mechanism of braking failure-free strand grinding machine.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of stop mechanism that twists grinding machine, comprises and be fixed on hubcap, the output shaft with braking chamber on gear box casing and the first nut gear being spirally connected with output shaft; Output shaft is articulated on the indoor one end of brake chamber and is fixed with friction disc, output shaft is provided with free-wheel clutch, one side of free-wheel clutch is provided with the first friction lining for contacting with friction disc, and the opposite side of free-wheel clutch is provided with the second friction lining for contacting with the first nut gear.
As preferably, described the first friction lining and the second friction lining are made by glass-felt plastic.Compressive strength is large, wear-resisting long service life.
As preferably, on described output shaft, be bolted with setting nut, between setting nut and the first nut gear, be provided with thrust ball bearing.After friction disc wear, can adjust the distance between the first nut gear and the second friction lining by setting nut, thereby extend the service life of stop mechanism; And thrust ball bearing is set, can prevent the first nut gear and the second friction lining locking.
Compared with prior art, the utility model has the advantage of at stop mechanism during in braking mode, the first nut gear compresses the friction disc of the first friction lining, the second friction lining and free-wheel clutch and output shaft, unidirectional rotation due to free-wheel clutch, and the friction force between the friction force between free-wheel clutch and the first friction lining and the first friction lining and the friction disc of output shaft, make output shaft synchronize with free-wheel clutch and brake, the good reliability of braking.
As improvement, the stop mechanism of described strand grinding machine also comprises the handbrake mechanism coordinating with described the first nut gear by transmission component.Adopt two kinds of device series connection processed, when a stop mechanism is malfunctioning therein, can also reliably brake.
As preferably, described handbrake mechanism comprises brake-applying handle, the transmission axle being connected with brake-applying handle, be arranged on input gear on transmission axle, be fixed on anchor shaft on gear box casing, by screw thread fit, be arranged on the second nut gear and the slip gear being connected with anchor shaft by bearing on anchor shaft, the second nut gear and input gear engagement, slip gear one side be provided with for gear box casing in side contacts the 3rd friction lining, slip gear opposite side is provided with the 4th friction lining for contacting with the second nut gear; Slip gear coordinates with the first nut gear by transmission component.
As improvement, between the 4th friction lining and the second nut gear, be provided with pad, described pad is set on transmission axle and anchor shaft.While preventing weight tenesmus, opposition forms locking while being delivered between the 4th friction lining and the second nut gear.
Accompanying drawing explanation
Fig. 1 is the cutaway view of self-sustaining gear of the present utility model.
Fig. 2 is the cutaway view of handbrake mechanism of the present utility model.
Fig. 3 is the lateral plan of pad of the present utility model.
Shown in figure: 1, hubcap, 2, output shaft, 2.1, friction disc, 3, the first nut gear, 4, free-wheel clutch, the 5, first friction lining, 6, the second friction lining, 7, output gear, 8, setting nut, 9, thrust ball bearing, 10, transmission axle, 11, input gear, 12, anchor shaft, the 13, second nut gear, 14, slip gear, 15, the 3rd friction lining, the 16, the 4th friction lining, 17, pad.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in the figure, this preferred embodiment is a kind of stop mechanism that twists grinding machine, comprises and is fixed on hubcap 1, the output shaft 2 with braking chamber on gear box casing and the first nut gear 3 being spirally connected with output shaft 2; Output shaft 2 is articulated in the indoor one end of brake chamber and is fixed with friction disc 2.1, output shaft 2 is provided with free-wheel clutch 4, the two sides of free-wheel clutch 4 are provided with the first friction lining 5, the second friction lining 6, the side of the first friction lining 5 contacts with friction disc 2.1, and the side of the second friction lining 6 contacts with the first nut gear 3; The first nut gear 3 is connected with power input mechanism; Output shaft 2 is fixed with output gear 7 away from one end of braking chamber, and output gear 7 is connected with the working part of strand grinding machine.
In the present embodiment, on output shaft 2, be bolted with setting nut 8, between setting nut 8 and the first nut gear 3, be provided with thrust ball bearing 9.After friction lining (5,6) wearing and tearing, the distance that can adjust between the first nut gear 3 and the second friction lining 6 by setting nut 8, thereby the service life of prolongation stop mechanism; And thrust ball bearing 9 is set, can, in transferring weight process, prevent the first nut gear 3 and the second friction lining 6 lockings.
In the lift heavy state of strand grinding machine, the first nut gear 3 moves to braking chamber under dynamic action, thereby compress the first friction lining 5, the friction disc 2.1 of the second friction lining 6 and free-wheel clutch 4 and output shaft 2, now free-wheel clutch 4 is rotatable, the power acting in the first nut gear 3 is sent on output gear 7 by output shaft 2, weight is sling in working part work, and when stopping input power, due to weight Action of Gravity Field, the related output shaft 2 of output gear 7 has reversal trend, and free-wheel clutch 4 can not reverse, thereby make to twist grinding machine automatically in braking mode, transferring in state of strand grinding machine, reverse power makes the first nut gear 3 move to leaving braking chamber direction, the first friction lining 5, after loosening, the friction disc 2.1 of the second friction lining 6 and free-wheel clutch 4 and output shaft 2 there is not friction force, now output shaft 2 is in of short duration free state, weight will freely glide and accelerate the velocity of rotation of output shaft 2, when the rotating speed of output shaft 2 is greater than after the reverse speed of the first nut gear 3, the first nut gear 3 moves to braking chamber, thereby compress first, the friction disc 2.1 of the second friction lining 6 and free-wheel clutch 4 and output shaft 2, brake, circulation said process, until when weight is moved to correct position, while stopping reverse power input, due to weight Action of Gravity Field, output shaft 2 has reversal trend, and free-wheel clutch 4 can not reverse, thereby make to twist grinding machine automatically in braking mode.
In addition, also comprise the handbrake mechanism coordinating with described the first nut gear 3 by transmission component (not shown).Wherein, transmission component is single or multiple gear wheel shafts, handbrake mechanism comprises brake-applying handle (not shown), the transmission axle 10 being connected with brake-applying handle, be arranged on the input gear 11 on transmission axle 10, be fixed on the anchor shaft 12 on gear box casing, by screw thread fit, be arranged on the second nut gear 13 and the slip gear 14 being connected with anchor shaft 12 by bearing on anchor shaft 12, the second nut gear 13 and input gear 11 engagements, slip gear 14 both sides are provided with the 3rd friction lining 15, the 4th friction lining 16, side contacts in the side of the 3rd friction lining 15 and gear box casing, the side of the 4th friction lining 16 contacts with the second nut gear 13, slip gear 14 coordinates with the first nut gear 3 by transmission component.Pull-up brake-applying handle, the second nut gear 13 is because the power of input gear 11 moves to slip gear 14 directions, by the 3rd friction lining 15, the 4th friction lining 16 and slip gear 14 and the interior side compression of gear box casing, slip gear 14 is stopped operating, and by transmission component, the first nut gear 3 is also stopped operating, now output shaft 2 rotates under weight effect, the first nut gear 3 is moved to braking chamber, thereby compress first, the friction disc 2.1 of the second friction lining 6 and free-wheel clutch 4 and output shaft 2, under the effect of free-wheel clutch 4, output shaft 2 is braked.
Preferably, between the 4th friction lining 16 and the second nut gear 3, be provided with pad 17, pad 17 is set on transmission axle 10 and anchor shaft 12.
Wherein, the first friction lining 5, the second friction lining 6, the 3rd friction lining 15 and the 4th friction lining 16 are made by glass-felt plastic, and compressive strength is large, wear-resisting.
Claims (6)
1. twist a stop mechanism for grinding machine, comprise and be fixed on hubcap (1), the output shaft (2) with braking chamber on gear box casing and the first nut gear (3) being spirally connected with output shaft (2); It is characterized in that: output shaft (2) is articulated in and on the indoor one end of brake chamber, is fixed with friction disc (2.1), output shaft (2) is provided with free-wheel clutch (4), one side of free-wheel clutch (4) is provided with the first friction lining (5) for contacting with friction disc (2.1), and the opposite side of free-wheel clutch (4) is provided with the second friction lining (6) for contacting with the first nut gear (3).
2. the stop mechanism of strand grinding machine according to claim 1, is characterized in that: described the first friction lining (5) and the second friction lining (6) are made by glass-felt plastic.
3. the stop mechanism of strand grinding machine according to claim 1 and 2, is characterized in that: on described output shaft (2), be bolted with setting nut (8), between setting nut (8) and the first nut gear (3), be provided with thrust ball bearing (9).
4. the stop mechanism of strand grinding machine according to claim 1 and 2, is characterized in that: also comprise the handbrake mechanism coordinating with described the first nut gear (3) by transmission component.
5. the stop mechanism of strand grinding machine according to claim 4, it is characterized in that: described handbrake mechanism comprises brake-applying handle, the transmission axle being connected with brake-applying handle (10), be arranged on the input gear (11) on transmission axle (10), be fixed on the anchor shaft (12) on gear box casing, by screw thread fit, be arranged on the second nut gear (13) and the slip gear (14) being connected with anchor shaft (12) by bearing on anchor shaft (12), the second nut gear (13) and input gear (11) engagement, slip gear (14) one sides be provided with for gear box casing in side contacts the 3rd friction lining (15), slip gear (14) opposite side is provided with the 4th friction lining (16) for contacting with the second nut gear (13), slip gear (14) coordinates with the first nut gear (3) by transmission component.
6. the stop mechanism of strand grinding machine according to claim 5, is characterized in that: between the 4th friction lining (16) and the second nut gear (13), be provided with pad (17), described pad (17) is set on transmission axle (10) and anchor shaft (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320551029.XU CN203419710U (en) | 2013-09-05 | 2013-09-05 | Brake mechanism of winch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320551029.XU CN203419710U (en) | 2013-09-05 | 2013-09-05 | Brake mechanism of winch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203419710U true CN203419710U (en) | 2014-02-05 |
Family
ID=50018810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320551029.XU Expired - Fee Related CN203419710U (en) | 2013-09-05 | 2013-09-05 | Brake mechanism of winch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203419710U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253574A (en) * | 2016-08-18 | 2016-12-21 | 长兴金诺机械有限公司 | A kind of angular wheel accelerator |
-
2013
- 2013-09-05 CN CN201320551029.XU patent/CN203419710U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253574A (en) * | 2016-08-18 | 2016-12-21 | 长兴金诺机械有限公司 | A kind of angular wheel accelerator |
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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 |
Granted publication date: 20140205 Termination date: 20140905 |
|
| EXPY | Termination of patent right or utility model |