There is the towing winch of brake structure
Technical field
The utility model relates to a kind of marine equipment, and particularly a kind of towing winch specifically has the towing winch of brake structure.
Background technology
Towing winch is a kind of marine equipment, in ship haul, uses, and general towing winch comprises HM Hydraulic Motor, cylinder, bus cable device and brake equipment.That brake device of winch mainly plays is fixing, discharge the effect of ship cable.
The brake equipment of existing winch is generally brake band, and the operation of existing brake band generally all relies on manpower to strain and discharges cylinder.There is following problem in this structure: brake is by manual operation, realize the braking to cylinder by the speed of artificial hand screw rod and workman's strength, the size of workman's strength and the speed of hand screw rod can not meet the working condition requirement of large load ship machinery conventionally, and workman's danger in hand screw rod is very large, easily causes safety misadventure.
In order to improve the braking of safety and the large-scale winch of adaptation, the brake band of a lot of large-scale winches all adopts hydraulic actuating cylinder to drive, generally drive the tension of brake band and unclamp by the flexible of hydraulic actuating cylinder, after the long-time use of brake band, the screen resilience variation of brake band, in the time that brake band unclamps, due to the effect of brake band self gravitation, cylinder has been unclamped in the below of brake band, and the top of brake band is still held cylinder tightly, makes cylinder be difficult to rotate.
The production precision out of reach designing requirement of general brake band, or brake band is long-term use after because of reason out of reach operatings needs such as wearing and tearing, can make the too tight of the slow or brake band card of brake band brake speed.
After cylinder being fixed with brake band, brake will be unclamped, and brake unclamp that back roll do not locate may roll and cause danger because of a variety of causes.
Summary of the invention
The utility model is for prior art deficiency, the towing winch with brake structure is provided, this towing winch still can unclamp cylinder by fast speed at the long-time wire wheel back-braking structure that uses, and can Quick brake in the time of brake, reduces unnecessary brake rubber block wearing and tearing.And reducing the time of braking, brake prevents cylinder rotation and causes danger after unclamping.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: the towing winch with brake structure, comprise cylinder, described cylinder arranged outside has brake band, described brake band below is provided with jacking system, described jacking system comprises the first support, on described the first support, be provided with pulley, the pull bar of described brake band comprises the connecting portion of both sides, on two described connecting portions, be provided with the second screw that relative hand of spiral is contrary, the 3rd screw, in described the second screw and the 3rd screw, be provided with the 3rd screw rod, the hand of spiral on described the 3rd screw rod both sides is contrary, on described cylinder, be also provided with ratchet, also include the clamping block coordinating with described ratchet.In the time that brake band will unclamp brake band below can encounter jacking system make brake band above can depart from cylinder soon, prevent from being difficult to depart from because self gravitation impact makes brake band top be close to cylinder, pulley is set and reduces the friction between jacking system and brake band, reduce wear, length that can adjusting yoke by the 3rd screw rod, thereby guarantee the installation requirement of brake band, after long-term practicality, can reach by shortening the length of pull bar the object of Quick brake, after cylinder being stopped with brake band, use clamping block that ratchet is clamped, prevent that cylinder from rotating and causing danger in the time not working.
In technique scheme, preferred, described jacking system also includes the second support, and described the second support upper end is provided with jacking block.More reliable and stable when jacking block is set makes brake band jack-up.Jacking block is set also for by brake band jack-up, and coordinates and make it more to stablize with pulley.
In technique scheme, preferred, on described the first support, be provided with through hole, described pulley is connected with the first screw rod, and described the first screw rod is inserted in described through hole, is respectively provided with a nut on the first screw rod of described through hole both sides.Adopt this structure that the height of pulley can be regulated, by two nut rotations, the height of pulley is regulated.
In technique scheme, preferred, the straight line at described the first screw rod place is through the rotating shaft of described cylinder.Make like this jack-up better effects if of jacking system
In technique scheme, preferred, described the second support upper end is provided with the second screw rod, and described jacking block bottom is provided with the first screw, and described the first screw coordinates with described the second screw rod.The height of jacking block can be regulated.
The utility model compared with prior art, there is following beneficial effect: the utility model in the time that brake band will unclamp brake band below can encounter jacking system make brake band above can depart from cylinder soon, prevent from being difficult to depart from because self gravitation impact makes brake band top be close to cylinder, pulley is set and reduces the friction between jacking system and brake band, reduce wear, length that can adjusting yoke by the 3rd screw rod, thereby guarantee the installation requirement of brake band, after long-term use, can reach by shortening the length of pull bar the object of Quick brake.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of brake structure.
Fig. 2 is the structural representation of the first support.
Fig. 3 is the structural representation of the second support.
Fig. 4 is the partial enlarged drawing of Fig. 1.
Fig. 5 is the sectional structure schematic diagram of cylinder.
Fig. 6 is the left view of Fig. 5.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail: referring to Fig. 1 to Fig. 6, there is the towing winch of brake structure, comprise cylinder 1, described cylinder 1 arranged outside has brake band 2, described brake band 2 belows are provided with jacking system 3, described jacking system 3 comprises the first support 4, on described the first support 4, is provided with pulley 41.In the time that brake band 2 will unclamp brake band 2 below can encounter jacking system 3 make brake band 2 above can depart from cylinder 1 soon, prevent from being difficult to depart from because self gravitation impact makes brake band 2 tops be close to cylinder 1, pulley 41 is set and reduces the friction between jacking system 3 and brake band 2, reduce wear, on described cylinder 1, be also provided with ratchet 11, also include the clamping block 6 coordinating with described ratchet 11, in the present embodiment, described clamping block 6 is rotationally connected with the vehicle frame of towing winch, after cylinder 1 being stopped with brake band 2, use clamping block 6 that ratchet 11 is clamped, prevent that cylinder 1 from rotating and causing danger in the time not working.
Described jacking system 3 also includes the second support 5, and described the second support 5 upper ends are provided with jacking block 51.More reliable and stable when jacking block 51 is set makes brake band 2 jack-up.Jacking block 51 is set also for by brake band 2 jack-up, and coordinates and make it more to stablize with pulley 41.
On described the first support 4, be provided with through hole 42, described pulley 41 is connected with the first screw rod 43, and described the first screw rod 43 is inserted in described through hole 42, on the first screw rod 43 of described through hole 42 both sides, is respectively provided with a nut 44.Adopt this structure that the height of pulley 41 can be regulated, rotate the height of pulley 41 is regulated by two nuts 44.
The straight line at described the first screw rod 43 places is through the rotating shaft of described cylinder 1.Make like this jack-up better effects if of jacking system 3
Described the second support 5 upper ends are provided with the second screw rod 52, and described jacking block 51 bottoms are provided with the first screw 53, and described the first screw 53 coordinates with described the second screw rod 52.The height of jacking block 51 can be regulated.
Due to the production precision out of reach designing requirement of brake band 2, or brake band 2 is long-term use after because of reason out of reach operatings needs such as wearing and tearing, this just need to can regulate the degree of tightness of brake band 2, therefore in the present embodiment, the pull bar 21 of described brake band 2 comprises the connecting portion 22 of both sides, on two described connecting portions 22, be provided with the second screw 23 that relative hand of spiral is contrary, the 3rd screw 24, in described the second screw 23 and the 3rd screw 24, be provided with the 3rd screw rod 25, the hand of spiral on described the 3rd screw rod 25 both sides is contrary, can regulate the stretch into amount of the 3rd screw rod 25 in connecting portion 22 by rotating the 3rd screw rod 25, realize the adjusting of pull bar 21 length, thereby brake band 2 degrees of tightness can be regulated.On the 3rd screw rod 25, be fixedly connected with the hexagonal nut 26 that facilitates the 3rd screw rod 25 to rotate.