CN104555793A - Self-locking disc brake - Google Patents
Self-locking disc brake Download PDFInfo
- Publication number
- CN104555793A CN104555793A CN201410790896.8A CN201410790896A CN104555793A CN 104555793 A CN104555793 A CN 104555793A CN 201410790896 A CN201410790896 A CN 201410790896A CN 104555793 A CN104555793 A CN 104555793A
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- Prior art keywords
- brake
- control lever
- brake control
- mount pad
- disc
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a self-locking disc brake, which comprises a braking force bearing support, a brake arm and a lift mechanism, wherein the brake arm comprises a main body, a brake end, a friction plate and a mounting part, the end face of the brake end of the brake arm is arc-shaped, a circle center P of the arc at the end face is arranged above on one side, which is far away from the brake disc, of a rotating center O of the brake arm; the brake end is provided with a friction plate seat, the friction plate is arranged in the friction plate seat and tightly clings to and completely covers the end face of the brake end. According to the self-locking disc brake, the two end faces of a disc, such as two end faces of the brake disc on one end of a winding part of a winding drum, are driven to achieve the purposes of driving the winding drum to brake and stopping a weight to move. The self-locking disc brake has the advantages of simple structure, small occupied area, quick brake response, strong brake performance, safety and reliability.
Description
The application is application number is 201310040797.3, and the applying date is on February 2nd, 2013, and invention and created name is the divisional application of the application for a patent for invention of " self-locking plate disc brake ".
Technical field
The present invention relates to brake field, be specifically related to a kind of self-locking plate disc brake.
Background technology
Winding type weight-lifting equipment comprises winch and the winch hoist for water conservancy gate.The reel of winding type weight-lifting equipment adopts the mode of braking motor axle to brake usually, and the braking of motor shaft is divided into external to brake and built-in braking.External braking is that the motor shaft between motor and reductor installs plate disc brake, and this motor generally selects asynchronous motor; Built-in braking is braked by brake disc in motor, and this motor generally selects Cone-shaped electric machine.Weight-lifting equipment must ensure enough safetys, and the braking of existing motor shaft also exists unsurmountable hidden danger all the time.Once occur that burst accident such as brake troubles or power-off are malfunctioning, or load is comparatively large suffered by motor shaft, and off-axis phenomenon occurs, and braking will not have any effect, the serious accident that reel just there will be " slip car ".Therefore, in order to avoid the safety misadventure that motor shaft brake failure causes, need to arrange second brake, as arranged the brake equipment of reel to reach the object of insurance; Even if motor shaft brake failure like this, the drg of reel can prevent the rotation of reel, thus the weight lifted by crane can not glide, and ensures the operating personal below weight and device security.
Such as Chinese patent literature CN 101327898 B(application number 200710057653.3) disclose a kind of braking drum safety device, it is fixedly mounted with a braking deceleration machine at the opposite side of the non-mounted motor of reel, this braking deceleration machine is coaxially fixedly mounted with a secondary brake, the transmission shaft of the braking deceleration machine in this secondary brake is fixedly mounted with a cubic zygote, a friction disc is had at coaxial package in cubic zygote radial direction, coaxially in secondary brake, brake disc and winding seat is also separately installed with this friction disc, the shell of this winding seat and secondary brake is fixedly mounted with and is uniformly diametrically provided with magnet coil and spring, brake disc is arranged between friction disc and winding seat.No matter when above-mentioned braking drum safety device is used on the reel of electric block, winch or water conservancy gate headstock gear, also need separately to establish a braking deceleration machine to reel, this is higher to the input of equipment.
Chinese patent literature CN 101698463 B(application number 200910209263.2) disclose a kind of braking device of electric block, comprise motor braking mechanism, reductor braking mechanism and reel forced brake mechanism; Reel forced brake mechanism wherein comprises the speed sensor being connected to reel output shaft external part, the rotating speed electric control part be connected with speed sensor, ratchet and the detent mechanism by rotating speed electric control part control action, also arranges by the drum brake mechanism of rotating speed electric control part control action in reel; When motor braking mechanism and reductor braking mechanism deceleration and stopping performance decline or break down, the weight of electric block lifting declines under gravity rapidly, the faster rotational speed of reel, now the rotating speed electric control part of reel forced brake mechanism will make detent mechanism engage with ratchet, drum brake mechanism is started working, reel is steadily stopped.The brake process need of this reel stop mechanism first makes detent mechanism engage with ratchet, and then drum brake mechanism is just started working, and retro-speed just receives impact.
In addition, Chinese patent literature CN 101284635 A(application number 200810049733.9) disclose a kind of double-brake electric hoist, it includes second brake, described second brake has brake wheel and brake control lever, brake control lever is two arcs, its upper end has a hole to turn with the bearing pin be supported in brake cover plate to coordinate, a switch block is had between the end face of its lower end, the side of the one end being formed in the rotating shaft in brake cap plate hole switch block therewith connects, the upper end of pendulum plate is connected with above-mentioned rotating shaft, one end of its lower end and pull bar is hinged, the other end of pull bar is relative with electromagnet, the two ends of spring are connected with two arcs respectively, electromagnet is fixed on the stay bearing plate of second brake, the a kind of of brake wheel is the brake wheel be connected mutually with the high speed rotating shaft of change-speed box, and another kind is the brake wheel be connected mutually with the inwall of reel, and the axle stretched out outside this brake wheel and reel is connected.During the work of this second brake, it is that brake control lever opens brake wheel locking that the suction of electromagnet makes rotating shaft rotation certain angle drive switch block to rotate, and reel stops operating.But this kind of drg in use, if the weight of electric block lifting is heavier, just need very large additional brake torque.
Above-mentioned disclosed drg realizes braking by the rotating shaft of reel or the inwall of reel, also has the spring brake being realized braking by the brake disc arranged the winder two ends of reel in addition.The braking end face of two brake control levers is pressed on two end faces of brake disc by the elastic force of spring by this drg, plays brake action; When needs brake off, by the pressure-generating device Compress Spring of hydraulic type or fluid pressure type, two brake control levers are made to open thus contact braking.But this drg is once spring deteriorates, its deceleration and stopping performance will reduce greatly, cannot continue to use again; And during brake off, needing the pressure-generating device of hydraulic type or fluid pressure type, the braking force that spring plays has mostly, and the power of corresponding brake off also needs much.
Summary of the invention
Technical matters to be solved by this invention is to provide that a kind of structure is simple, snap catch, safe and reliable, can to the self-locking plate disc brake of the reel braking in weight-lifting equipment.
The first technical scheme realizing the object of the invention is a kind of self-locking plate disc brake, comprises braking force and bears bearing, connecting rod, brake control lever and lifting body.
Braking force bears bearing and comprises bed plate and mount pad, and mount pad comprises the first mount pad and the second mount pad, is separately positioned on the both sides of bed plate; Connecting rod comprises first connecting rod and second connecting rod, and brake control lever comprises the first brake control lever and the second brake control lever; The first mount pad that one end of first connecting rod and braking force bear bearing is rotationally connected, and the other end and first brake control lever of first connecting rod are rotationally connected; The second mount pad that one end of second connecting rod and braking force bear bearing is rotationally connected, and the other end and second brake control lever of second connecting rod are rotationally connected; The space of placing brake disc is provided with between first mount pad and the second mount pad.
Described brake control lever comprises main body, dog point, friction bar, friction lining and installation portion; Dog point and installation portion are separately positioned on the two ends of main body; Friction lining is arranged in friction bar, and friction lining fits tightly and covers completely on the end face of dog point; Lifting body is fixedly installed on bed plate from top by its underpart.
Middle brake control lever is used to be in braking position or releasing position; When brake control lever is in braking position, brake disc is arranged between the friction lining of two brake control levers, and the first mount pad, first connecting rod and the first brake control lever and the second mount pad, second connecting rod and the second brake control lever are that the plane of symmetry is symmetrical arranged with brake disc; The end face of friction lining and brake disc is fitted, friction lining and brake disc coaxial line, and the central axis L of brake disc and the central axis M of connecting rod intersects at the rotary middle point of brake control lever, and the initial value of the braking angle α of line L and line M is 3 ° ~ 45 °.
The dog point of above-mentioned brake control lever is plane.
Described lifting body comprises swinging mounting, installation sleeve, electromagnet, spring, armature, pull bar, forked type rod and push rod; Push rod is force application part.
Swinging mounting and installation sleeve are fixed on braking force and bear on the bed plate of bearing, and the mount pad that swinging mounting bears bearing near braking force is arranged; Swinging mounting vertical is arranged on bed plate, and the upper end of swinging mounting arranges pin shaft hole.
Electromagnet, spring and armature are arranged in installation sleeve, and electromagnet and spring are positioned at the below of armature, and electromagnet comprises magnet coil and iron core, and magnet coil is wrapped in its outer diameter, and iron core is fixedly installed on the bottom of installation sleeve by its lower end; The lower end of spring is fixed on the bottom of installation sleeve, and the upper end of spring is fixedly connected with the lower surface of the armature above it, and the lower surface of pull bar is fixedly connected with the upper surface of armature, and the upper end of pull bar is stretched out from the top of installation sleeve.
Described forked type rod is made up of straight-bar and two bifurcateds, and straight-bar is provided with two pin shaft holes; The end upper surface of two bifurcateds is fixedly installed a push rod respectively; When brake control lever is in releasing position, push rod and brake control lever lower contacts.
Forked type rod is rotatably connected on swinging mounting, and the straight-bar end of forked type rod is also connected with pull bar.
As the lifting body of another kind of form, comprise installation sleeve, electromagnet, spring, armature, pull bar and link span.
Described link span is the uncovered oblong in upper end, comprises the first connecting panel, the second connecting panel and base plate; First connecting panel of link span is fixedly connected with the friction bar of the first brake control lever, and the second connecting panel of link span is fixedly connected with the friction bar of the second brake control lever, and when brake control lever is in releasing position, base plate contacts with pull bar.
The electromagnet of lifting body, spring and armature are arranged in installation sleeve, and armature is positioned at the below of electromagnet and spring, and the magnet coil of electromagnet is wrapped in its outer diameter, and iron core is fixedly installed on the top of installation sleeve by its upper end; The upper end of spring is fixed on the top of installation sleeve, and the lower end of spring is fixedly connected with the upper surface of the armature below it; The lower surface of pull bar is fixedly connected with the upper surface of armature, and the upper end of pull bar is stretched out from the top of installation sleeve.
As preferably, when brake control lever is in braking position, time, the end face of friction lining and brake disc is fitted, and the initial value of the braking angle α of the central axis L of brake disc and the line of centers M of connecting rod is 5 ° ~ 45 °.
The second technical scheme realizing the object of the invention comprises braking force to bear bearing, brake control lever and lifting body.
Braking force bears bearing and comprises bed plate and mount pad, and mount pad comprises the first mount pad and the second mount pad, is separately positioned on the both sides of bed plate; Brake control lever comprises the first brake control lever and the second brake control lever; First brake control lever and the first mount pad are rotationally connected, and the second brake control lever and the second mount pad are rotationally connected.The space of placing brake disc is provided with between first mount pad and the second mount pad.
Brake control lever comprises main body, dog point, friction lining and installation portion, and the end face of the dog point of brake control lever is circular arc, the center of circle P of end face circular arc be positioned at the center of turn O of brake control lever away from above the side of brake disc; Dog point is provided with friction bar, friction lining be arranged on friction bar in and fit tightly and cover completely on the end face of dog point;
Lifting body is fixedly installed on bed plate, and when brake control lever is in releasing position, the force application part of lifting body contacts with the lower surface of the dog point of brake control lever.
When brake control lever is in braking position, the first mount pad and the first brake control lever and the second mount pad and the second brake control lever with plectane to be braked for the plane of symmetry is symmetrical arranged; The contact point of the arc surface of friction lining and the end face of brake disc is called T point, the line of the center of turn O of T point and brake control lever is called line S; The distance of the center of turn O of T point and brake control lever is shorter than the distance of any position of T point top on friction lining and the center of turn O of brake control lever, and the initial value of the central axis L of brake disc and the braking angle α of line S is 3 ° ~ 45 °.
Described lifting body comprises swinging mounting, installation sleeve, electromagnet, spring, armature, pull bar, forked type rod and collision block; Collision block is force application part.
Swinging mounting and installation sleeve are fixed on braking force and bear on the bed plate of bearing, and swinging mounting bears bearing near braking force; Swinging mounting vertical is arranged on bed plate, and the upper end of swinging mounting arranges pin shaft hole.
Electromagnet, spring and armature are arranged in installation sleeve, and electromagnet and spring are positioned at the below of armature, and electromagnet is wrapped in its outer diameter, and iron core is fixedly installed on the bottom of installation sleeve by its lower end; The lower end of spring is fixed on the bottom of installation sleeve, and the upper end of spring is fixedly connected with the lower surface of the armature above it, and the lower surface of pull bar is fixedly connected with the upper surface of armature, and the upper end of pull bar is stretched out from the top of installation sleeve.
Described forked type rod is made up of straight-bar and two bifurcateds, and straight-bar is provided with two pin shaft holes; The end upper surface of two bifurcateds is fixedly installed a collision block respectively; When brake control lever is in releasing position, collision block and brake control lever lower contacts.
Forked type rod is rotatably connected on swinging mounting, and the straight-bar end of forked type rod is also connected with pull bar.
As preferably, when brake control lever is in braking position, the end contact of friction lining and disk to be braked, the initial value of the central axis L of disk to be braked and the braking angle α of line S is 5 ° ~ 45 °.
The present invention has positive effect: (1) self-locking plate disc brake of the present invention is that two end faces of the brake disc of winder one end of two end faces such as reel to disk are braked thus reached and reel is braked, stop the object of weight motion.Brake structural of the present invention is simple, floor area is little but braking response is fast, deceleration and stopping performance strong, safe and reliable.
(2) self-locking plate disc brake of the present invention disobeys outer power to increase brake torque, does not need the pressure-generating device that such as hydraulic type or vapour-pressure type etc. are special, can be widely used in different braking occasions; And electromagnetic induction speed is fast, brake off, response braking time are short, and braking hastens very fast, plays the effect of fast safety brake.
(3) magnet coil of the drg of the first (corresponding embodiment 1) of the present invention and the second (corresponding embodiment 2) form is not when being energized, armature is upward movement under the effect of spring to lifting force, pull bar drives the pull bar coupling end of forked type rod to rise and the decline of push rod coupling end, two push rods are no longer to two friction lining bearings applyings thrust upwards, move down under the effect that friction lining bearing is conducted oneself with dignity at brake control lever, two brake strips are fit together with disk end face respectively, and disk is by locking.
The magnet coil of the drg of the third (corresponding embodiment 3) form of the present invention is not when being energized, armature deadweight and and the moved downward of spring, no longer to two friction lining bearings applyings thrust upwards, thus the brake control lever of disk both sides moves downward under Gravitative Loads, two brake strips fit together with disk end face respectively, and disk is by locking.
Due to the initial value size of set braking angle α, after the friction lining of disk both sides to be braked tightly fits together with disk end face respectively, disk rotational moment of torsion is larger, and the brake torque of friction lining is just larger; Disobey outer stress and realize braking.
And when needing to cancel braking, only need the magnet coil of drg be energized, get final product brake off.Because electromagnetic induction speed is fast, the speed of brake off is also very fast.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the self-locking plate disc brake of the first structure of the present invention, and the brake control lever of the drg in figure is in braking mode;
Fig. 2 is for the self-locking plate disc brake shown in Fig. 1 is for the braking mode schematic diagram of winch hoist, and the brake control lever of the drg in figure is in braking mode;
Fig. 3 is the schematic diagram of the forked type rod in Fig. 2;
Fig. 4 is the schematic diagram of the self-locking plate disc brake of the second structure of the present invention, and the brake control lever of the drg in figure is in braking mode;
Fig. 5 is the lifting body schematic diagram of the second structure;
Fig. 6 is the schematic diagram of the self-locking plate disc brake of the third structure of the present invention, and the brake control lever of the drg in figure is in braking mode;
Fig. 7 is for the self-locking plate disc brake shown in Fig. 6 is for the using state schematic diagram of the winch hoist of water conservancy gate, and the brake control lever of the drg in figure is in braking mode;
Mark in above-mentioned accompanying drawing is as follows:
Braking force bears bearing 1, bed plate 11, mount pad 12, the first mount pad 12a, the second mount pad 12b, reinforced seat 13, the first reinforced seat 13a, the second reinforced seat 13b, pipe link 14, pin shaft hole 14-1;
Connecting rod 2, first connecting rod 2a, second connecting rod 2b, the first pin shaft hole 21, second pin shaft hole 22;
Brake control lever 3, the first brake control lever 3a, the second brake control lever 3b, friction bar 31, friction lining 32;
Lifting body 4, swinging mounting 41, installation sleeve 42, electromagnet 43, spring 44, armature 45, pull bar 46, forked type rod 47, straight-bar 47-1, bifurcated 47-2, push rod 48, collision block 49;
Brake disc 5, end face 51;
First bearing pin 61, second bearing pin 62
Link span 7, the first connecting panel 71, second connecting panel 72, base plate 73;
Frame 8.
Detailed description of the invention
Be described to brake the reel of the winch hoist for water conservancy gate in following examples.Described winch hoist comprises frame 8, bearing seat, bearing, drum shaft, reel and brake disc 5.Bearing seat is fixed in frame 8 before and after having 2 points, and bearing is fixedly mounted in drum shaft, and is also arranged in corresponding bearing seat, and reel is fixed in drum shaft.Described reel comprises cylindric winder.Making described brake disc 5 can be the special plectane being fixed on one end of the winder of reel arranged, and brake disc 5 is coaxially set with the rotating shaft of reel, and brake disc 5 welds or be bolted on one end of winder.Also can be original rope blocking plate doubling as brake disc and use; The external diameter of brake disc 5 is greater than the diameter of the winder of reel.
Brake disc 5 comprises two end faces 51 and the side between two end faces.
(embodiment 1)
See Fig. 1, the self-locking plate disc brake of the present embodiment comprises braking force and bears bearing 1, connecting rod 2, brake control lever 3 and lifting body 4.
Braking force bears bearing 1 and comprises bed plate 11, mount pad 12 and reinforced seat 13, and wherein mount pad 12 comprises the first mount pad 12a and the second mount pad 12b, and reinforced seat 13 comprises the first reinforced seat 13a and the second reinforced seat 13b; First mount pad 12a and the first reinforced seat 13a is arranged on the side (being left side in figure) of bed plate 11, and the second mount pad 12b and the second reinforced seat 13b is arranged on the opposite side (being right side in figure) of bed plate 11; First mount pad 12a and the second mount pad 12b is arranged between two reinforced seats 13.
The upper end of the first mount pad 12a and the second mount pad 12b is fixedly installed pipe link 14 respectively, and the upper end of pipe link 14 is provided with pin shaft hole 14-1.
Brake control lever 3 comprises main body, dog point, friction bar 31, friction lining 32 and installation portion.Dog point and installation portion are separately positioned on the two ends of main body.Installation portion is provided with pin shaft hole.The end face of dog point is plane, and dog point is provided with friction bar 31 and friction lining 32, and friction lining 32 is arranged in friction bar 31, and friction lining 32 fits tightly and covers completely on the end face of dog point.The friction lining adopted derives from the asbestos-free friction sheet of Changzhou Wujin Nan Zhai brake component Co., Ltd.The thickness of each friction lining 34 is identical, is 3 ~ 10 millimeters, and the present embodiment is 8 millimeters.
Connecting rod 2 comprises first connecting rod 2a and second connecting rod 2b, and brake control lever 3 comprises the first brake control lever 3a and the second brake control lever 3b; The first mount pad 12a that one end of first connecting rod 2a and braking force bear bearing 1 is rotationally connected, and the other end and the first brake control lever 3a of first connecting rod 2a are rotationally connected; The second mount pad 12b that one end of second connecting rod 2b and braking force bear bearing 1 is rotationally connected, and the other end and the second brake control lever 3b of second connecting rod 2b are rotationally connected.
The two ends of described first connecting rod 2a are respectively equipped with a bearing pin mounting hole, are respectively the first pin shaft hole 21 and the second pin shaft hole 22.Bearing pin bears the pin shaft hole 14-1 of the pipe link 14 on the first mount pad 12a of bearing 1 successively through first pin shaft hole 21 of first connecting rod 2a and braking force, thus the first mount pad 12a that first connecting rod 2a and braking force bear bearing 1 is rotationally connected.Bearing pin passes the pin shaft hole of second pin shaft hole 22 of first connecting rod 2a and the installation portion of the first brake control lever 3a successively, thus the first brake control lever 3a and first connecting rod 2a is rotationally connected.
The two ends of second connecting rod 2b are respectively equipped with a bearing pin mounting hole, are respectively the first pin shaft hole 21 and the second pin shaft hole 22.Bearing pin bears the pin shaft hole 14-1 of the pipe link 14 on the second mount pad 12b of bearing 1 successively through first pin shaft hole 21 of second connecting rod 2b and braking force, thus the second mount pad 12b that second connecting rod 2b and braking force bear bearing 1 is rotationally connected.Bearing pin passes the pin shaft hole of second pin shaft hole 22 of second connecting rod 2b and the installation portion of the second brake control lever 3b successively, thus the second brake control lever 3b and second connecting rod 2b is rotationally connected.
During use, braking force bears bearing 1 and to be bolted on reel frame by its base plate 11 thus braking force bears bearing 1 is fixedly mounted on reel frame 8; Brake disc 5 is between the first mount pad 12a and the second mount pad 12b.First mount pad 12a, first connecting rod 2a and the first brake control lever 3a and the second mount pad 12b, second connecting rod 2b and the second brake control lever 3b with brake disc 5 for the plane of symmetry is symmetrical arranged.
In using, brake control lever 3 is in braking position or releasing position.When drg is not energized, brake control lever 3 is in braking position, the friction lining 32 of the first brake control lever 3a is fitted with a side end face (being left side in Fig. 1) of brake disc 5, friction lining 32 and brake disc 5 coaxial line, now the central axis L of the drum brake disc 5 and central axis M of first connecting rod 2a intersects at the rotary middle point of brake control lever 3, also namely intersects at the center of second pin shaft hole 22 of first connecting rod 2a; Using the angle α of line L and line M as braking angle, the initial value of braking angle is 3 ° ~ 45 °, preferably 5 ° ~ 45 °, is 30 ° in the present embodiment.The friction lining 32 of the second brake control lever 3b is fitted with the opposite side end face (being right side in Fig. 1) of drum brake disc 5.When two end faces 51 of brake disc 5 are fitted with the friction lining 32 of the first brake control lever 3a and the friction lining 32 of the second brake control lever 3b respectively, brake disc 5, by the first brake control lever 3a and the second brake control lever 3b locking, can not transfer weight again.
Want brake off, need lifting body 4 upwards to be pushed up by brake control lever 3, make the friction lining 32 of brake control lever 3 and end face 51 disengaging of brake disc 5 and brake off.
See Fig. 2, described lifting body 4 comprises swinging mounting 41, installation sleeve 42, electromagnet 43, spring 44, armature 45, pull bar 46, forked type rod 47 and push rod 48.
Swinging mounting 41 and installation sleeve 42 are fixed on braking force and bear on the bed plate 11 of bearing 1, and the mount pad 12 that swinging mounting 41 bears bearing 1 near braking force is arranged.Swinging mounting 41 vertical is arranged on bed plate 11, and the upper end of swinging mounting 41 arranges pin shaft hole.
Electromagnet 43, spring 44 and armature 45 are arranged in installation sleeve 42, and electromagnet 43 and spring 44 are positioned at the below of armature 45.Electromagnet 43 comprises magnet coil and iron core, and magnet coil is wrapped in its outer diameter, and iron core is fixedly installed on the bottom of installation sleeve 42 by its lower end.The lower end of spring 44 is fixed on the bottom of installation sleeve 42, and the upper end of spring 44 is fixedly connected with the lower surface of the armature 45 above it, thus spring 44 applies elastic force upwards to armature 45.The lower surface of pull bar 46 is fixedly connected with the upper surface of armature 45, and the upper end of pull bar 46 is stretched out from the top of installation sleeve 42.The upper end of pull bar 46 arranges pin shaft hole.
See Fig. 3, described forked type rod 47 is made up of straight-bar 47-1 and two bifurcated 47-2.Straight-bar 47-1 is provided with two pin shaft holes; The end upper surface of two bifurcated 47-2 is fixedly installed a push rod 48 respectively.When brake control lever 3 is in releasing position, push rod 48 contacts with the lower surface of the friction bar 31 of brake control lever 3; When brake control lever 3 is in braking position, the distance of the lower surface of the upper end of push rod 48 and the dog point of brake control lever 3 is greater than 10mm.
Forked type rod 47 is rotatably connected on swinging mounting 41, and the first bearing pin 61 passes the pin shaft hole of the pin shaft hole of swinging mounting 41 upper end and the close bifurcated 47-2 of straight-bar 47-1 successively, thus forked type rod 47 and swinging mounting 41 are rotationally connected.The straight-bar 47-1 end of forked type rod 47 is also connected with pull bar 46, and the second bearing pin 62 is successively through the pin shaft hole of pull bar 46 upper end and the pin shaft hole of straight-bar 47-1 end, thus pull bar 46 is connected with forked type rod 47.
During the self-locking plate disc brake place in operation of the present embodiment, when not being energized, the friction lining 32 of the first brake control lever 3a and the second brake control lever 3b is fitted with two end faces 51 of brake disc 5 respectively, and reel is by locking.
When the electrical power of winch hoist is made to reel normal hoisting weight or transfers weight, also pass into electric current in the magnet coil of lifting body 4 simultaneously, the upwards elastic force that armature 45 overcomes spring 44 under downward magnetic action moves downward, the pull bar 46 be connected with armature 45 also moves downward, forked type rod 47 is driven with the first bearing pin 61 for fulcrum while pull bar 46 is downward, the pull bar coupling end of forked type rod 47 declines, and two of forked type rod 47 bifurcated 47-2 rise, the friction bar 31 being separately fixed at two push rods, the 48 pairs of brake control levers 3 on two bifurcated 47-2 applies thrust upwards, now the first brake control lever 3a drives first connecting rod 2a to rotate up around the bearing pin on pipe link 14 while rotating up, thus the dog point friction lining 32 of the first brake control lever 3a departs from the left side of the brake disc 5 of reel.Meanwhile, the dog point friction lining 32 of the second brake control lever 3b departs from the right side of the brake disc 5 of reel, and reel can free motion.
When the motor power-off of winch hoist, no longer electric current is passed in the magnet coil of lifting body 4, armature 45 is upward movement under the power that the upsprings effect of spring 44, the pull bar 46 also upward movement be connected with armature 45, pull bar 46 upwards while drive forked type rod 47 with the first bearing pin 61 for fulcrum, the pull bar coupling end of forked type rod 47 rises, and two of forked type rod 47 bifurcated 47-2 decline, be separately fixed at two push rods 48 on two bifurcated 47-2 no longer to the thrust that the friction bar 31 of brake control lever 3 applies upwards; Now the first brake control lever 3a moves downward under the Action of Gravity Field of self, drives first connecting rod 2a to be rotated down around the bearing pin on pipe link 14, and the dog point friction lining 32 of the first brake control lever 3a is fitted with the left side of the brake disc 5 of reel; Meanwhile, the dog point friction lining 32 of the second brake control lever 3b is fitted with the right side of the brake disc 5 of reel, and reel is realized braking by locking.
Rely on the gravity of brake control lever 3 self and the initial value of set braking angle α due to during braking, utilize mechanical self-latching principle, no matter the weight connected below reel has multiple, reel total energy keeps static.
Drg of the present invention does not need special pressure-generating device such as such as hydraulic type or vapour-pressure type etc. can realize braking, and electromagnetic induction speed is fast, and the brake off time is short; Braking hastens also very fast, plays the effect of fast safety brake.
Drg of the present invention is not limited to be braked the reel of electric block, winch or water conservancy gate headstock gear, the disk of brake equipment can be needed to brake to other.
(embodiment 2)
See Fig. 4 and Fig. 5, all the other are identical with embodiment 1 for the present embodiment self-locking plate disc brake, and difference is:
Brake control lever 3 comprises main body, dog point, friction lining 32 and installation portion.The end face of the dog point of brake control lever 3 is circular arc, and friction lining 32 fits tightly and covers completely on the end face of dog point.The end face of the dog point of brake control lever 3 is that the center of circle P of end face circular arc is positioned at above the side away from brake disc 5 of the center of turn O of brake control lever 3.
First brake control lever 3a and the first mount pad 12a is rotationally connected, and the second brake control lever 3b and the second mount pad 12b is rotationally connected.
The end upper surface of two bifurcated 47-2 of forked type rod 47 is fixedly installed a collision block 49 respectively.During use, when brake control lever 3 is in releasing position, collision block 49 contacts with the lower surface of the dog point of brake control lever 3; When brake control lever 3 is in braking position, collision block 49 is greater than 10mm with the distance of the lower surface of the dog point of brake control lever 3.
When brake control lever 3 is in braking position, drg is not energized, the friction lining 32 of the first brake control lever 3a contacts with a side end face (being left side in Fig. 1) of drum brake disc 5, the contact point of the end face 51 of the arc surface of friction lining 32 and brake disc 5 is called T point, the line of the center of turn O of T point and brake control lever 3 is called line S; The distance of the center of turn O of T point and brake control lever 3 is shorter than the distance of any position of T point top on friction lining 32 and the center of turn O of brake control lever 3, and now the central axis L of the drum brake disc 5 and angle α of line S is as braking angle.The initial value of braking angle is 3 ° ~ 45 °, preferably 5 ° ~ 45 °, is 15 ° in the present embodiment.The initial value of described braking angle refers to the braking initial angle of braking angle α.Described braking initial angle refers to that the electromagnet 43 of the lifting body 4 of formula drg is after dead electricity, brakes the numerical value of angle α when the friction lining 32 of brake control lever 3 starts to contact with brake disc 5.When two end faces 51 of drum brake disc 5 contact with the friction lining 32 of the second brake control lever 3b with the friction lining 32 of the first brake control lever 3a respectively, drum brake disc 5, by the first brake control lever 3a and the second brake control lever 3b locking, can not transfer weight again.
When lifting body 4 is energized, when applying thrust upwards to the first brake control lever 3a, the first brake control lever 3a rotates up, and departs from the end face of drum brake disc 5; Meanwhile, the second brake control lever 3b also rotates up, and departs from the end face of drum brake disc 5, thus reel contact braking.
(embodiment 3)
See Fig. 6 and Fig. 7, all the other are identical with embodiment 1 for the present embodiment self-locking plate disc brake, and difference is:
Lifting body 4 comprises installation sleeve 42, electromagnet 43, spring 44, armature 45, pull bar 46 and link span 7.
Described link span 7 is the uncovered oblong in upper end, comprises the first connecting panel 71, second connecting panel 72 and base plate 73.First connecting panel 71 of link span 7 is fixedly connected with the friction bar 31 of the first brake control lever 3a, and the second connecting panel 72 of link span 7 is fixedly connected with the friction bar 31 of the second brake control lever 3b, and when brake control lever 3 is in releasing position, base plate 73 contacts with pull bar 46.
The electromagnet 43 of lifting body 4, spring 44 and armature 45 are arranged in installation sleeve 42, and armature 45 is positioned at the below of electromagnet 43 and spring 44.Electromagnet 43 comprises magnet coil and iron core, and magnet coil is wrapped in its outer diameter, and iron core is fixedly installed on the top of installation sleeve 42 by its upper end.The upper end of spring 44 is fixed on the top of installation sleeve 42, and the lower end of spring 44 is fixedly connected with the upper surface of the armature 45 below it, thus spring 44 applies downward elastic force to armature 45.The lower surface of pull bar 46 is fixedly connected with the upper surface of armature 45, and the upper end of pull bar 46 is stretched out from the top of installation sleeve 42.Pull bar 46 when being energized to the thrust that link span 7 applies upwards.
When the electrical power of electric block, winch or water conservancy gate headstock gear is made to reel normal hoisting weight or transfers weight, also pass into electric current in the magnet coil of lifting body 4 simultaneously, armature 45 overcome under magnetic action upwards spring 44 to down spring upward movement, the pull bar 46 also upward movement be connected with armature 45, pull bar 46 applies thrust upwards to link span thus the friction bar 31 of brake control lever 3 is applied to thrust upwards; Now the first brake control lever 3a drives first connecting rod 2a to rotate up around the bearing pin on pipe link 14 while rotating up, thus the dog point friction lining 32 of the first brake control lever 3a departs from the left side of the brake disc of reel.Meanwhile, the dog point friction lining 32 of the second brake control lever 3b departs from the right side of the brake disc 5 of reel, and reel can free motion.
When the motor power-off of electric block, winch or water conservancy gate headstock gear, no longer electric current is passed in the magnet coil of lifting body 4, armature 45 at spring 44 to down spring moved downward, the pull bar 46 be connected with armature 45 also moves downward, and link span 7 is no longer to the thrust that the friction bar 31 of brake control lever 3 applies upwards; Now the first brake control lever 3a moves downward under the Action of Gravity Field of self, drives first connecting rod 2a to be rotated down around the bearing pin on pipe link 14, and the dog point friction lining 32 of the first brake control lever 3a is fitted with the left side of the brake disc 5 of reel; Meanwhile, the dog point friction lining 32 of the second brake control lever 3b is fitted with the right side of the brake disc 5 of reel, and reel is realized braking by locking.
Claims (3)
1. a self-locking plate disc brake, is characterized in that: comprise braking force and bear bearing (1), brake control lever (3) and lifting body (4);
Braking force bears bearing (1) and comprises bed plate (11) and mount pad (12), and mount pad (12) comprises the first mount pad (12a) and the second mount pad (12b), is separately positioned on the both sides of bed plate (11); Brake control lever (3) comprises the first brake control lever (3a) and the second brake control lever (3b); First brake control lever (3a) and the first mount pad (12a) are rotationally connected, and the second brake control lever (3b) and the second mount pad (12b) are rotationally connected;
The space of placing brake disc (5) is provided with between first mount pad (12a) and the second mount pad (12b);
Brake control lever (3) comprises main body, dog point, friction lining (32) and installation portion, and the end face of the dog point of brake control lever (3) is circular arc, and the center of circle P of end face circular arc is positioned at above the side away from brake disc (5) of the center of turn O of brake control lever (3); Dog point is provided with friction bar, friction lining (32) be arranged on friction bar in and fit tightly and cover completely on the end face of dog point;
Lifting body (4) is fixedly installed on bed plate (11), and when brake control lever (3) is in releasing position, the force application part of lifting body (4) contacts with the lower surface of the dog point of brake control lever (3);
When brake control lever (3) is in braking position, the first mount pad (12a) and the first brake control lever (3a) and the second mount pad (12b) and the second brake control lever (3b) with plectane to be braked for the plane of symmetry is symmetrical arranged; The contact point of the end face (51) of the arc surface of friction lining (32) and brake disc (5) is called T point, the line of the center of turn O of T point and brake control lever (3) is called line S; The distance of the center of turn O of T point and brake control lever (3) is shorter than the distance of any position of T point top on friction lining (32) and the center of turn O of brake control lever (3), and the initial value of the central axis L of brake disc (5) and the braking angle α of line S is 3 ° ~ 45 °.
2. self-locking plate disc brake according to claim 1, is characterized in that: described lifting body (4) comprises swinging mounting (41), installation sleeve (42), electromagnet (43), spring (44), armature (45), pull bar (46), forked type rod (47) and collision block (49); Collision block (49) is force application part;
Swinging mounting (41) and installation sleeve (42) are fixed on braking force and bear on the bed plate (11) of bearing (1), and swinging mounting (41) bears bearing (1) near braking force; Swinging mounting (41) vertical is arranged on bed plate (11), and the upper end of swinging mounting (41) arranges pin shaft hole;
Electromagnet (43), spring (44) and armature (45) are arranged in installation sleeve (42), electromagnet (43) and spring (44) are positioned at the below of armature (45), electromagnet (43) is wrapped in its outer diameter, and iron core is fixedly installed on the bottom of installation sleeve (42) by its lower end; The lower end of spring (44) is fixed on the bottom of installation sleeve (42), the upper end of spring (44) is fixedly connected with the lower surface of the armature (45) above it, the lower surface of pull bar (46) is fixedly connected with the upper surface of armature (45), and the upper end of pull bar (46) is stretched out from the top of installation sleeve (42);
Described forked type rod (47) is made up of straight-bar (47-1) and two bifurcateds (47-2), and straight-bar (47-1) is provided with two pin shaft holes; The end upper surface of two bifurcateds (47-2) is fixedly installed a collision block (49) respectively; When brake control lever (3) is in releasing position, collision block (49) and brake control lever (3) lower contacts;
Forked type rod (47) is rotatably connected on swinging mounting 41, and straight-bar (47-1) end of forked type rod (47) is also connected with pull bar (46).
3. self-locking plate disc brake according to claim 1, it is characterized in that: when brake control lever (3) is in braking position, friction lining (32) contacts with the end face (51) of disk to be braked, and the initial value of the central axis L of disk to be braked and the braking angle α of line S is 5 ° ~ 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410790896.8A CN104555793B (en) | 2013-02-02 | 2013-02-02 | Self-locking disc brake |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310040797.3A CN103145061B (en) | 2013-02-02 | 2013-02-02 | Self-locking disc type brake |
| CN201410790896.8A CN104555793B (en) | 2013-02-02 | 2013-02-02 | Self-locking disc brake |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310040797.3A Division CN103145061B (en) | 2013-02-02 | 2013-02-02 | Self-locking disc type brake |
Publications (2)
| Publication Number | Publication Date |
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| CN104555793A true CN104555793A (en) | 2015-04-29 |
| CN104555793B CN104555793B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410790896.8A Active CN104555793B (en) | 2013-02-02 | 2013-02-02 | Self-locking disc brake |
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| Country | Link |
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| CN (1) | CN104555793B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178075A (en) * | 2019-09-26 | 2021-01-05 | 东莞理工学院 | Armored car fault analysis braking device convenient to clamp |
| CN116022681A (en) * | 2023-03-29 | 2023-04-28 | 德马科起重机械有限公司 | Stall self-locking device of crane |
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| CN116022681A (en) * | 2023-03-29 | 2023-04-28 | 德马科起重机械有限公司 | Stall self-locking device of crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104555793B (en) | 2017-01-25 |
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