CN201031121Y

CN201031121Y - Supercharge loading and braking integrated safety device suitable for load-carrying lifting mechanism

Info

Publication number: CN201031121Y
Application number: CNU2007200055584U
Authority: CN
Inventors: 潘义德
Original assignee: CHENG DAY MACHINERY WORKS Co Ltd
Current assignee: CHENG DAY MACHINERY WORKS Co Ltd
Priority date: 2007-03-09
Filing date: 2007-03-09
Publication date: 2008-03-05
Anticipated expiration: 2017-03-09

Abstract

The utility model relates to an integrated safety apparatus of overload and brake applicable to a loading winding machine, which comprises a drive mandrel, a brake sleeve body, a brake nut body, a spring seat and a resilient block. The utility model has the structure that a brake screw cap with toothed gears which are arranged in a common mechanical ratchet brake group is designed into a group with a separating gear, a brake screw cap and a sliding spring seat. With the help of spring force, the brake screw cap with toothed gears is combined as part of a sliding clutch, which leads the ratchet brake group to be integrated with the sliding clutch, and has the functions of overload sliding motion and brake, thereby greatly increasing the loading and lifting operation safety effect of a winding machine.

Description

Be applicable to the overload and the brake one safety device of load-carrying hoisting mechanism

Technical field

The utility model relates to a kind of mechanical drive security maintenance mechanism, relates in particular to a kind of overload and brake one safety device that is applicable to the load-carrying hoisting mechanism.

Background technology

Existing general fairleader is such as crane, elevators etc. all are that the power by an electro-motor drives control, imput power is transmitted through a power wheel, and finally utilize its clutch end to carry out the descending operation of load-carrying, for example the sprocket wheel and the driving chain that set firmly of its clutch end of crane promptly is, when providing weight to hang to carry out lifting, it hangs the thing operation, because the lift heavy operation often faces various different operating conditions, happen occasionally and hang the overweight imput power mechanism that causes of thing and damage, or hang that thing is overweight to cause the danger that stall is midway dropped, or hang the overweight many drawbacks such as causing badly damaged prime power motor of transferring rapidly of thing, study carefully its source and effectively integrate design with the clutch pack shortage by real tradition brake because of hoisting mechanism, can't bring into play and influence its due function, even cause more serious safety problem.

The utility model content

Technical problem underlying to be solved in the utility model is, overcome the above-mentioned defective that prior art exists, and a kind of overload that is applicable to the load-carrying hoisting mechanism and brake one safety device be provided, it has overload and slides and brake function, and the safety of operation effect of lifting winch structure load-carrying lifting significantly.

The technical scheme that its technical matters that solves the utility model adopts is:

A kind of overload and brake one safety device that is applicable to the load-carrying hoisting mechanism, it is characterized in that, comprise: a transmission spindle, its axial end sets firmly a power wheel for takeoff output, its axial stage casing external diameter is concaved with a brake thread, and form one respectively in front and back end thread terminal point and screw and prevent end and to unscrew to prevent end, its axial forward end to be set as the articulated section in a predetermined circle footpath, this articulated section end is established an external screw thread; One brake lining body, be to be fixedly arranged on the transmission spindle of this power wheel side in the coaxial drive mode, it is convexly equipped with a neck axle and forms the vertical distolateral resistance end face of this neck axle in contrast to the axial distolateral of power wheel, this neck axle external diameter is with the unidirectional drive mode ratchet that is pivoted, and the axial two ends correspondence of this ratchet sets up one separately and prevents end face; One brake nut body, has an inner bolt hole to be scheduled to the brake thread that the antero posterior axis mode of moving is screwed together in this transmission spindle, it has a hollow neck axle and reaches by the hollow neck diameter of axle to a control panel that extends, the axial two ends of this control panel are set up one separately and are resisted end face, for the prevention end face that screws togather relative this ratchet of clipping packing of reach; One spring pedestal, be hubbed at the hollow neck axle of this brake nut body with transmission spindle coaxial drive mode, the distolateral of its nut body that brakes relatively axially is convexly equipped with a neck axle and forms the vertical resistance end face of this neck shaft end side, this neck axle external diameter is pivoted and accepts a drive wheel of propulsion source input, itself and the activity of neck axle external diameter are pivoted and drive control according to input end power and make the free pivot action of positive and negative beidirectional, the axial two ends of this drive wheel are set up one separately and are prevented end face, resist the packing clipping of end face for axial both sides; One elastic parts is hubbed at the axially distolateral of this spring pedestal to adjust the thrust mode, for the mutual clipping packing between brake lining body, brake nut body and spring pedestal group string side; By combinations thereof, set the slip clutch of load and integrate brake lining body and the common formation of unidirectional drive ratchet one mechanical brake structure by axle side formations one such as brake nut body, spring pedestal and elastic partss; When the load of mouth power wheel surpassed the torque of setting, then overload was avoided in the transmission of drive wheel slide relative protection input; Under no overload, spring pedestal, drive wheel, brake nut body, the mutual clipping of brake lining body are integral, and the ratchet of unidirectional drive is synchronous slip and smooth elevator operation power wheel; Stop when propulsion source is moved to shift to by elevator, transmission spindle is prevented because of the unidirectional non-return effect of axle side clipping ratchet immediately just because of the load-carrying backward rotation; When power wheel is shifted to when transferring, brake nut axon is moved counter moving back and is unclamped the ratchet clipping to reduce thrust; When load-carrying was quickened to be higher than the drive wheel of propulsion source because of power, the brake nut body was because of the relatively action clipping ratchet packing stop before axle is shifted to once again of transmission spindle racing; Reach the significantly safety of operation usefulness of lifting winch structure load-carrying lifting in view of the above.

Aforementioned overload and the brake one safety device that is applicable to the load-carrying hoisting mechanism, wherein the flank of ratchet cooperates the spring shaft pivot to set up a unidirectional ratchet, by the permanent characteristic that keeps unidirectional meshing this ratchet flank of unidirectional ratchet, and the slide shaft pivot that keeps this ratchet just changeing dallies and the non-return braking of counter-rotating.

Aforesaid overload and the brake one safety device that is applicable to the load-carrying hoisting mechanism, wherein elastic parts is that to be a dish-type spring be good, and cooperate one to be subjected to muscle and to end muscle lining axle setting position, its axially distolateral external screw thread of borrowing one group of bearing, lining, an adjustment nut and a hold-doun nut to be locked in this articulated section end.

Aforesaid overload and the brake one safety device that is applicable to the load-carrying hoisting mechanism wherein resists end face and prevents the brake pad that is sticked at least between the end face opposite side, ends very function with the friction that promotes between side.

Borrow combinations thereof, can constitute the slip clutch of a setting load according to axle sides such as brake nut body, spring pedestal and elastic partss, and integrate brake lining body and the common formation of unidirectional drive ratchet one mechanical brake structure; When the load of mouth power wheel surpassed the torque of setting, then overload was avoided in the transmission of drive wheel slide relative protection input; Under no overload, clipping such as spring pedestal, drive wheel, brake nut body, brake lining body etc. mutually are integral, and the ratchet of unidirectional drive is synchronous slip and smooth elevator operation power wheel; Stop when propulsion source is moved to shift to by elevator, transmission spindle is prevented because of the unidirectional non-return effect of axle side clipping ratchet immediately just because of the load-carrying backward rotation; When power wheel is shifted to when transferring, brake nut axon is moved counter moving back and is unclamped the ratchet clipping to reduce thrust; When load-carrying was quickened to be higher than the drive wheel of propulsion source because of power, the brake nut body was because of the relatively action clipping ratchet packing stop before axle is shifted to once again of transmission spindle racing; Reach the significantly safety of operation effect of lifting winch structure load-carrying lifting in view of the above.

From the above mentioned; the utility model characteristic; be with general ratchet brake group design disengage gears, brake nut, spring perch slidably; via the effect of spring power; make it to be combined into the part of slip clutch; improve that whereby ratchet brake group and slip clutch are integrated, it is become have that overload is slided and the operating system of the tool safety safety method of brake double linking.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the assembled sectional view of the utility model one preferred embodiment

Fig. 2 is that the utility model ratchet is just changeing the plan sketch that unidirectional slip drives

Fig. 3 is the reverse plan sketch of unidirectional non-return braking of the utility model ratchet

But Fig. 4 is the plan sketch that the rotating of the utility model drive wheel drives

Fig. 5 is that the utility model brake nut body screws togather relative axle and moves diagram of work

Fig. 6 is the make progress action scheme drawing of elevator operation of the utility model

Fig. 7 is the action scheme drawing of the downward hanging operation of the utility model

The number in the figure explanation:

Transmission spindle 10 articulated sections 11 power wheels 12

Brake car thread 13 screws prevents end 131 to unscrew prevention end 132

Articulated section 14 external screw threads 141

Brake car lining body 20 neck axles 21 resist end face 22

Ratchet 23 is prevented end face 231,232 unidirectional ratchets 24

Brake nut body 30 inner bolt holes 31 hollow neck axles 32

Control panel 33 resists end face 331,332

Spring pedestal 40 neck axles 41 resist end face 42

Drive wheel 43 is prevented end face 431,432

Elastic parts 50 is subjected to muscle 51 to end muscle lining 52

Bearing 53 linings 54 are adjusted nut 55

Hold-doun nut 56 brake pads 60

The specific embodiment

At first, see also shown in Figure 1, the utility model is applicable to the overload and the brake one safety device of load-carrying hoisting mechanism, be to be applied to such as fairleaders such as crane, elevators, its keystone configuration includes: a transmission spindle 10, a brake lining body 20, brake nut body 30, a spring pedestal 40 and an elastic parts 50;

This transmission spindle 10, its axial end is provided with the articulated section 11 in predetermined circle footpath, and set firmly one thereon can be for the power wheel 12 (present embodiment is the chain wheel construction) of takeoff output, its axial stage casing predetermined shaft is concaved with a brake thread 13 apart from external diameter, as shown in Figure 5, and form one respectively in front and back end thread terminal point and screw and prevent end 131 and to unscrew to prevent end 132, its axial forward end then to be set as another articulated section 14 in predetermined circle footpath, and establish an external screw thread 141 in these articulated section 14 ends;

This brake lining body 20, as shown in Figure 1, be that fit key is established and is fixedly arranged in the coaxial drive mode on the transmission spindle 10 of these power wheel 12 sides, it is convexly equipped with a neck axle 21 and forms this neck axle 21 vertical distolateral resistance end faces 22 in contrast to the axial distolateral of power wheel 12, this neck axle 21 external diameters are for unidirectional drive mode ratchet 23 that is pivoted, the axial two ends correspondence of this ratchet 23 sets up one separately and prevents end face 231,232, please continue to cooperate Fig. 2, shown in Figure 3, the flank of this ratchet 23 cooperates the spring shaft pivot to set up a unidirectional ratchet 24, by the unidirectional ratchet 24 permanent characteristics that keep unidirectional meshing these ratchet 23 flanks, and the slide shaft pivot that keeps this ratchet 23 just changeing dallies (consulting Fig. 2) and the non-return braking (consulting Fig. 3) of this ratchet 23 counter-rotatings;

This nut body 30 that brakes, as Fig. 1, shown in Figure 5, has an inner bolt hole 31 to be scheduled to the brake thread 13 that the antero posterior axis mode of moving is screwed together in this transmission spindle 10, the control panel 33 that it has a hollow neck axle 32 and is radially extended by hollow neck axle 32, these control panel 33 axial two ends are set up one separately and are resisted end face 331,332, for the prevention end face 232 that screws togather relative this ratchet 23 of clipping packing of reach;

This spring pedestal 40, as Fig. 1, shown in Figure 5, it is the hollow neck axle 32 that is hubbed at this brake nut body 30 with transmission spindle 10 coaxial drive modes, its relatively brake nut body 30 distolateral axially and be convexly equipped with a neck axle 41 and form these neck axle 41 1 sides vertical one resist end face 42, these neck axle 41 external diameters are pivoted and accept a drive wheel 43 of propulsion source input, as shown in Figure 4, itself and the activity of neck axle 41 external diameters are provided with, make the free pivot action of positive and negative beidirectional and can drive control according to input end power, the axial two ends of this drive wheel 43 are set up one separately and are prevented end face 431,432, resist end face 322 for axial both sides, 42 packing clipping;

This elastic parts 50, be to be hubbed at the axially distolateral of this spring pedestal 40 to adjust the thrust mode, as shown in Figure 1, it is to be a dish-type spring, and cooperate one to be subjected to muscle 51 and to end 52 setting positions of muscle lining, it is axially distolateral by one group of bearing 53, lining 54, an one adjustment nut 55 and a hold-doun nut 56 are locked in the external screw thread 141 of these articulated section 14 ends, so that brake lining body 20 to be provided, mutual clipping packing operation between group string sides such as brake nut body 30 and spring pedestal 40, it utilizes adjusts nut 55 and screws togather that a transposition is whole drives control and end the axial packing dish-type spring of muscle lining 52 and lining 53 and adjust setpoint torque.

By combinations thereof, the utility model is a kind of overload and brake one safety device that is applicable to the load-carrying hoisting mechanism, and it manipulates situation, please cooperate to consult Fig. 6, shown in Figure 7,

At first it should be noted that: the strength that numerous adjustment nut 55 increases elastic parts 50 is revolved in the utility model utilization, drive wheel 43 increases with brake nut body 30, the spring pedestal 40 relative friction that abut between side, drive wheel 43 needs to transmit bigger torque and could slide, and opposite action then transmits less torque and promptly slides; When 12 loads of mouth power wheel surpassed the torque of setting, then the transmission of drive wheel 43 slide relative protection input avoided overload; Therefore, when the transmission process load was not transshipped, urgent between the resistance end face 331,332 of the prevention end face 431,432 of this drive wheel 43 and brake nut body 30 and the sides adjacent such as resistance end face 42 of spring pedestal 40 was one.

When carrying out load-carrying, the utility model hangs thing elevator when operation, it is under aforementioned no overload, spring pedestal 40, drive wheels 43 etc. are urgent to be ordered about brake nut body 30 synchronously and takes advantage of a situation and screw togather axle according to its inner bolt hole 31 and move, prevent end 131 positions and prevent end 132 to move to screwing of rear end by unscrewing of thread front end, as figure Fig. 5, shown in Figure 6, it is shifted to screw and prevents end 131 simultaneously, also force the resistance end face 331 of brake nut body 30 and the prevention end face 231 of this ratchet 23 relatively, 232 and the sides adjacent such as resistance end face 22 of brake lining body 20 between urgent be one, at this moment, as shown in Figure 2, the ratchet 23 of this unidirectional drive is to be synchronous slip and smooth elevator operation power wheel 12;

Stop and becoming by elevator action at propulsion source, then transmission spindle 10, brake lining body 20, ratchet 23, brake nut body 30, spring pedestal 40 etc. are controlled by elastic parts 50 axial packing strength still, ratchet 23 its counter-rotating meetings that add unidirectional drive are blocked at unidirectional ratchet 24 and can't be reversed (shown in Figure 3), so can may be subjected to preventing completely owing to the gravity downward direction rotation of power wheel 12 below lift heavys originally, and make transmission spindle 10 rotate, reach the purpose of braking.

Again, hang thing and transfer when operation when the utility model carries out load-carrying, when power wheel 12 becomes downward transmission process load and does not transship, the prevention end face 431 of this drive wheel 43,432 and the brake nut body 30 resistance end face 331,332 and the sides adjacent such as resistance end face 42 of spring pedestal 40 between urgently accept propulsion source for one and drive the control contrarotation, at this moment the urgent brake nut body 30 that orders about is synchronously taken advantage of a situation and is reversed and screw togather axle according to its inner bolt hole 31 and move, so this brake nut body 30 is prevented end 131 to be folded to unscrewing of front end again by screwing of thread rear end and is prevented end 132 positions, as Fig. 5, shown in Figure 7, it is shifted to unscrew and prevents end 132 simultaneously, also lead the resistance end face 331 of brake nut body 30 to leave the prevention end face 232 of this ratchet 23 relatively, separate sliding mode and become between this brake nut body 30 and ratchet 23 sides, also maintain simultaneously the slip form of separating between this brake lining body 20 and ratchet 23 sides, and that ratchet 23 is also kept under the prevention of unidirectional ratchet 24 is motionless, therefore transfer smoothly by the coaxial drive power wheel 12 of transmission spindle 10, the loading thing simultaneously begins the resistance of the torsional interaction that simultaneously rubbed to descend in the process, therefore can keep a stable operation speed.

And transfer when quickening to be higher than the drive wheel 43 of propulsion source because of gravity if meet load-carrying therebetween, please continue to consult shown in Figure 5, because of transmission spindle 10 racings move relatively, at this moment urgent brake nut body 30 is to take advantage of a situation to reverse and screw togather axle according to its inner bolt hole 31 and move, so this brake nut body 30 is prevented end 132 to be folded to screwing of rear end again by unscrewing of thread front end and is prevented end 131 positions, instantaneous time, this brake nut body 30 axle are once again shifted to preceding clipping ratchet 23 packing stop.

In addition, about the prevention end face 431,432 of the resistance end face 22 of above-mentioned brake lining body 20, the resistance end face 331,332 of preventing end face 231,232 and brake nut body 30 and spring pedestal 40 and the prevention end face 231,232 of ratchet 23 and the prevention end face 431,432 of drive wheel 43 etc. the brake pad 60 that is sticked between adjacent sides relatively, end very effect with the friction that promotes between side.

In sum, a kind of overload and brake integrative that is applicable to loading winch mechanism of the utility model Safety device, the space kenel of the technological thought of its formation and innovation can break through traditional bottleneck, Its improvements are that ratchet brake group and slip-clutch are integrated, thereby become the tool overload Slip is Ji the operating system of the tool security safeguard measure of Brake car double linking, compared with prior art, Have novelty, creativeness, practicality.

Claims

1. an overload and a brake one safety device that is applicable to the load-carrying hoisting mechanism is characterized in that, comprising:

One transmission spindle, its axial end sets firmly a power wheel for takeoff output, its axial stage casing external diameter is concaved with a brake thread, and form one respectively in front and back end thread terminal point and screw and prevent end and to unscrew to prevent end, its axial forward end is set as the articulated section in a predetermined circle footpath, and this articulated section end is established an external screw thread;

One brake lining body, be to be fixedly arranged on the transmission spindle of this power wheel side in the coaxial drive mode, it is convexly equipped with a neck axle and forms the vertical distolateral resistance end face of this neck axle in contrast to the axial distolateral of power wheel, this neck axle external diameter is with the unidirectional drive mode ratchet that is pivoted, and the axial two ends correspondence of this ratchet sets up one separately and prevents end face;

One brake nut body, have an inner bolt hole and be screwed together in the brake thread of this transmission spindle in the antero posterior axis mode of moving, it has a hollow neck axle and reaches by the hollow neck diameter of axle to a control panel that extends, the axial two ends of this control panel are set up one separately and are resisted end face, for the prevention end face that screws togather relative this ratchet of clipping packing of reach;

One spring pedestal, be hubbed at the hollow neck axle of this brake nut body with transmission spindle coaxial drive mode, the distolateral of its nut body that brakes relatively axially is convexly equipped with a neck axle and forms the vertical resistance end face of this neck shaft end side, this neck axle external diameter is pivoted and accepts a drive wheel of propulsion source input, itself and the activity of neck axle external diameter are pivoted and drive control according to input end power and make positive and negative beidirectional and freely pivot, the axial two ends of this drive wheel are set up one separately and are prevented end face, resist the packing clipping of end face for axial both sides;

One elastic parts is hubbed at the axially distolateral of this spring pedestal to adjust the thrust mode, for the mutual clipping packing between brake lining body, brake nut body and spring pedestal group string side.

2. according to described overload and the brake one safety device that is applicable to the load-carrying hoisting mechanism of claim 1, it is characterized in that the flank of described ratchet cooperates the spring shaft pivot to set up a unidirectional ratchet.

3. overload and the brake one safety device that is applicable to the load-carrying hoisting mechanism according to claim 1, it is characterized in that described elastic parts is a dish-type spring, and cooperate one to be subjected to muscle and to end muscle lining axle setting position, its axially distolateral external screw thread of borrowing one group of bearing, lining, an adjustment nut and a hold-doun nut to be locked in this articulated section end.

4. overload and the brake one safety device that is applicable to the load-carrying hoisting mechanism according to claim 1 is characterized in that described resistance end face and prevents the brake pad that is sticked at least between the end face opposite side.