CN218231344U - Automatic brake device for cable reel - Google Patents

Abstract

The utility model discloses a cable drum automatic brake equipment, including the frame that is equipped with two support arms, the cable drum rotates to be connected between two support arms, an at least terminal surface of cable drum is fixed with the ring flange, the ring flange has the brake hoop, support arm fixedly connected with permanent magnetic chuck, permanent magnetic chuck's magnetism quotation and brake hoop magnetism inhale the cooperation, it brakes the brake hoop when having magnetic force to inhale the quotation at magnetism, the frame front end articulates there is the spacing pendulum rod, spacing pendulum rod upper end is connected with the horizontal pole that is used for bearing the cable conductor, be connected with between spacing pendulum rod and permanent magnetic chuck's the switch lever and be used for driving permanent magnetic chuck work and keep or the extensible member that magnetic force is zero two looks repulsion states at magnetic force, when the cable conductor loses traction tension, permanent magnetic chuck work is in magnetic force holding state, when the cable conductor has traction tension, permanent magnetic chuck work is zero state at magnetic force. The utility model discloses use mechanical structure to control, braking stability is good, and the security is high, does not need extra energy power, and is energy-concerving and environment-protective.

Description

Automatic brake device for cable reel

Technical Field

The utility model relates to a cable unwrapping wire control technical field, concretely relates to can realize the device to the unpowered automatic brake of cable drum according to the unwrapping wire state of cable drum.

Background

When laying a cable, the cable needs to be paid out using a cable reel, and the cable is a thick and heavy power line or communication line and is generally laid under the ground. When laying, the end of the cable is generally drawn out from the cable reel by a tractor and led out along with the rotation of the cable reel. Due to the fact that the weight of the cable reel is large, when the paying-off is finished and the tractor is parked, the cable reel can continue to rotate due to the inertia effect, and the paying-off work of the cable cannot be stopped timely. Especially when the cable conductor is put down to the slope, if the cable drum can't effectively brake, then the cable drum can continue to pay off for a long time under the inertia effect, the cable conductor can be put longer more, and the unwrapping wire of this part cable conductor belongs to useless power, still need rewind to the cable drum on, this has increased unwrapping wire work load undoubtedly.

In order to solve the problem of cable reel paying-off braking, some power braking devices have been developed in the prior art, such as the braking device for cable reel paying-off in the chinese patent application with application publication number "CN 113415685A", the braking device is provided with driving rollers for flange plates at the end portions of the cable reel to be erected on the fixed supporting seat and the movable supporting seat, the driving rollers drive the flange plates to rotate, and further drive the cable reel to rotate so as to realize paying-off operation, and a braking mechanism for braking the flange plates at the end portions of the cable reel is arranged on the chassis to brake the flange plates. The invention discloses a braking device for a cable reel, which is characterized in that a braking mechanism consisting of an electromagnet is used for braking the cable reel, when the braking is needed, the electromagnet is electrified, the electromagnet generates a polarity which is repulsive to the magnetism of the electromagnet, a brake block is pushed to move up and down, and a wool felt layer on the brake block is tightly attached to a flange plate of the cable reel, so that the braking effect is achieved. Although the braking device can effectively brake the cable reel, the braking device needs to be provided with a power supply, namely extra energy power, and the braking device is limited in use under the condition that power supply is not provided in the field or power lines are not conveniently lapped.

SUMMERY OF THE UTILITY MODEL

In order to solve the defect that above-mentioned technique exists, the utility model provides a can realize the device to the unpowered automatic brake of cable drum according to the unwrapping wire state of cable drum.

The utility model discloses realize that the technical scheme that above-mentioned technological effect adopted is:

the utility model provides a cable drum automatic brake equipment, is including the frame that is equipped with two left and right sides support arms, and the cable drum rotates to be connected two between the support arm, and at least a terminal surface of cable drum is fixed with the ring flange, the ring flange has the brake hoop, support arm fixedly connected with permanent magnetism sucking disc, the magnetic chuck face with the cooperation is inhaled to brake hoop magnetism, it is right when having magnetic force in the magnetic chuck face the brake hoop brakies, the front end of frame articulates there is spacing pendulum rod, the upper end of spacing pendulum rod is connected with the horizontal pole that is used for bearing cable conductor, spacing pendulum rod with be connected with between permanent magnetism sucking disc's the switch lever and be used for the drive permanent magnetism sucking disc work is in the magnetic force keeps or the extensible member of two repulsion states that magnetic force is zero, when the cable conductor loses traction tension, permanent magnetism sucking disc work is in magnetic force keep state, when the cable conductor has traction tension, permanent magnetism sucking disc work is zero state in magnetic force.

Preferably, in foretell cable drum automatic brake device, be equipped with the fixed axle between the support arm, be fixed with the fixed disk on the fixed axle, the cable drum rotates to be connected on the fixed axle, the flange plate have the one end of braking hoop with the inner of fixed disk is relative, permanent magnetic chuck installs on the outer periphery of fixed disk.

Preferably, in foretell cable drum automatic brake device, the extensible member includes telescopic action bars and spring, action bars one end is connected permanent magnetic chuck's switch lever, and the other end is connected the lower extreme position of spacing pendulum rod, spring one end is connected on the support arm, and the other end is connected the lower extreme position of spacing pendulum rod.

Preferably, in foretell automatic brake equipment of cable drum, still include two permanent magnetism sucking discs in coordination, permanent magnetism sucking disc and two permanent magnetism sucking disc equidistant ring cloth in coordination is in on the outer periphery of fixed disk, permanent magnetism sucking disc's transmission epaxial fixedly connected with gear with switch handle, only fixedly connected with gear in coordination on permanent magnetism sucking disc's the transmission shaft, be connected with rotatable synchromesh dish on the fixed axle, there is the driving tooth along the shaping in the outer circumference of synchromesh dish, permanent magnetism sucking disc with permanent magnetism sucking disc's transmission epaxial gear respectively with the driving tooth transmission meshing of synchromesh dish.

Preferably, in the above automatic cable drum brake device, the cross bar is provided with a rotatable supporting roller, and a cable led out from the cable drum is transitionally led out through the supporting roller and connected with the tractor.

Preferably, in foretell cable drum automatic brake device, spacing hole has been seted up on the outer periphery of fixed disk, permanent magnetic chuck's bottom is connected with the gag lever post, the other end movably embedding of gag lever post is installed spacing downthehole, permanent magnetic chuck's bottom with still be equipped with canceling release mechanical system between the outer periphery of fixed disk.

Preferably, in foretell cable drum automatic brake device, canceling release mechanical system includes the guide bar and cup joints reset spring on the guide bar, the guiding hole has been seted up on the outer periphery of fixed disk, guide bar one end with permanent magnet chuck's bottom fixed connection, the other end is established in the guiding hole, reset spring one end with permanent magnet chuck's bottom fixed connection, the other end with the outer periphery fixed connection of fixed disk.

Preferably, in the above automatic cable drum brake device, circular through holes are formed in the disc surface of the synchronizing gear disc and are distributed at equal intervals.

The utility model has the advantages that: the utility model discloses a cable drum automatic brake device can make permanent magnetic chuck work when the cable conductor loses traction force at magnetic force holding state through ingenious lever moment effect to brake the cable drum, when the cable conductor has traction tension, make permanent magnetic chuck work be zero state at magnetic force, all use mechanical structure to realize automatic control, it is dangerous to avoid using the instability and the unexpected inefficacy production that automatically controlled arresting gear exists, do not need extra energy power, energy-concerving and environment-protective.

Drawings

Fig. 1 is a side view of an embodiment of the present invention;

fig. 2 is a perspective view of an embodiment of the present invention;

fig. 3 is a top view of an embodiment of the present invention;

FIG. 4 isbase:Sub>A cross-sectional view taken at "A-A" in FIG. 3;

fig. 5 is a perspective view of an embodiment of the present invention;

fig. 6 is a perspective view of the synchronizing gear plate of the present invention;

FIG. 7 is an enlarged view of a portion "I" in FIG. 5;

fig. 8 is a structural diagram of a brake device having two symmetrical flanges according to an embodiment of the present invention;

fig. 9 is a side view of the cable drum of the present invention;

fig. 10 is a structural view of a tray body of the cable tray of the present invention;

fig. 11 is a metal frame structure diagram of the cable reel of the present invention;

fig. 12 is a state diagram of the brake device according to the present invention when the cable has a traction tension;

fig. 13 is a state diagram of the brake device of the present invention when the traction tension is lost.

Detailed Description

For a further understanding of the invention, reference will now be made to the accompanying drawings and specific examples which illustrate, by way of example, the invention:

in the description of the present invention, it should be noted that the directions or positional relationships indicated by the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and in the case of not making a contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless otherwise specified or limited, the terms "disposed," "installed," "connected" and "connected" should be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or connected through an intermediate medium, and can communicate between the inside of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

Referring to fig. 1, 2, 3 and 4, as shown in the drawings, an embodiment of the present invention provides an automatic brake device for a cable reel, which includes a frame 1 having a left support arm 11 and a right support arm 11, and a cable reel 100 rotatably connected between the two support arms 11. Wherein, at least one terminal surface of cable drum 100 is fixed with ring flange 2, and ring flange 2 has braking ferrule 21. Support arm 11 fixedly connected with permanent magnetism sucking disc 4, the cooperation of magnetic attraction quotation 41 and the magnetic attraction of brake hoop 21 of permanent magnetism sucking disc 4, when magnetic attraction quotation 41 has magnetic force, magnetic attraction quotation 41 has the magnetic braking effect to brake hoop 21, has the brake power of holding back between the two this moment, can realize the braking to flange plate 2 and cable drum 100 as whole, makes cable drum 100 stop the unwrapping wire. When the magnetic disc surface 41 has no magnetic force, the magnetic disc surface 41 has no magnetic braking function on the brake hoop 21, and at this time, there is no braking force between the magnetic disc surface 41 and the brake hoop, so that the flange 2 and the cable reel 100 as a whole can continue to rotate and pay off on the rack 1.

Specifically, as shown in fig. 9, 10 and 11, the cable drum 100 includes a tray body 110 wound with the cable wires 200, and a metal frame 120 fixed on the tray body 110, the metal frame 120 is made of an angle steel member, and the flange 2 is fixedly connected with a side angle steel structure of the metal frame 120 through bolts, that is, the flange 2 and the cable drum 100 are integrated into a whole and rotatably connected between the two arms 11 of the rack 1. The tension on the cable 200 causes the flange 2 and the cable drum 100 as a whole to rotate together under the pulling action of the external pulling machine.

As shown in fig. 2 and 3, the front end of the frame 1 is hinged to a limiting swing rod 12, and the upper end of the limiting swing rod 12 is connected to a cross rod for supporting the cable 200. As shown in fig. 5, the cable wires 200 led out from the cable tray 100 are pressed against the rail and are paid out from the rail in a drawing direction during the leading-out process. In order to realize the rotation and braking control of the cable reel 100, two mutually-repellent telescopic parts for driving the permanent magnetic chuck 4 to work in a state of magnetic force keeping or zero magnetic force are connected between the limit swing rod 12 and the switch handle of the permanent magnetic chuck 4, one end of each telescopic part is connected with the switch handle of the permanent magnetic chuck 4, and the other end of each telescopic part is connected with the limit swing rod 12. As shown in fig. 12, when the cable 200 is pulled, the traction tension on the cable 200 drives the limit swing rod 12 to tilt forward by an angle, at this time, an inclination angle α is formed between the limit swing rod 12 and the ground horizontal plane, the limit swing rod 12 drives the extensible member to be kept in a first inclination angle state, because the extensible rod is connected with the switch handle of the permanent magnetic chuck 4, the extensible rod can drive the switch handle to rotate after tilting, at this first inclination angle state, the permanent magnetic chuck 4 works in a state that the magnetic force is zero, and at this time, the permanent magnetic chuck 4 does not have a braking action on the cable reel 100. As shown in fig. 13, when the cable 200 is in a slack and non-traction state, there is no traction tension on the cable 200, the limit swing rod 12 tilts backwards by an angle to reset, at this time, an inclination angle β is formed between the limit swing rod 12 and the ground horizontal plane, the limit swing rod 12 drives the extensible member to be kept in a second inclination angle state, the extensible member drives the switch handle of the permanent magnetic chuck 4 to rotate, and in the second inclination angle state, the permanent magnetic chuck 4 works in a state of magnetic force keeping, and at this time, the permanent magnetic chuck 4 has a braking action on the cable reel 100. Wherein the inclination angle alpha is smaller than the inclination angle beta.

Specifically, as shown in fig. 13, when the cable 200 loses traction tension, the permanent magnetic chuck 4 works in a magnetic force holding state, at this time, the surface of the magnetic chuck surface 41 has a strong magnetic force, and under the strong magnetic force provided by the magnetic chuck surface 41, the magnetic chuck surface 41 magnetically attracts the brake hoop 21 of the flange 2, so as to brake the flange 2, and the cable reel 100 and the flange 2 as a whole are stopped on the rack 1. When cable conductor 200 has the traction tension, this permanent magnetism sucking disc 4 work is the zero state at magnetic force, and this moment, permanent magnetism sucking disc 4 does not have magnetism to the braking hoop 21 of ring flange 2 and inhales the effort, and ring flange 2 can rotate for permanent magnetism sucking disc 4, does not have the braking restraint to the unwrapping wire of cable drum 100, realizes promptly when drawing cable conductor 200 that cable drum 100 is rotatory, when stopping to draw and drag cable conductor 200, cable drum 100 self-braking. In the whole control process, the swing angle of the limiting swing rod 12 is controlled based on the tension change applied to the limiting swing rod 12 by the cable 200, and then the lever moment transmission action based on the telescopic piece is used for driving the switch handle of the permanent magnetic chuck 4 to work in a magnetic state or a non-magnetic state, so that the completely mechanical brake control is realized.

Further, in the preferred embodiment of the present invention, as shown in fig. 3 and 5, a fixing shaft 111 is disposed between the two arms 11, a fixing plate 8 is fixed on the fixing shaft 111, and the cable reel 100 is rotatably connected to the fixing shaft 111. As shown in fig. 4 and 7, one end of the flange 2 having the brake band 21 is opposite to the inner end of the fixed disk 8, and the permanent magnetic chuck 4 is mounted on the outer circumferential surface of the fixed disk 8. As shown in fig. 7, a limiting hole is formed on the outer circumferential surface of the fixed disk 8, a limiting rod 42 is connected to the bottom of the permanent magnetic chuck 4, and the other end of the limiting rod 42 is movably embedded in the limiting hole. A reset mechanism is further arranged between the bottom of the permanent magnetic chuck 4 and the outer circumferential surface of the fixed disk 8, and the reset mechanism comprises a guide rod 43 and a reset spring 431 sleeved on the guide rod 43. Wherein, the outer circumference of the fixed disk 8 is provided with a guide hole, one end of the guide rod 43 is fixedly connected with the bottom of the permanent magnetic chuck 4, and the other end is arranged in the guide hole. One end of the return spring 431 is fixedly connected with the bottom of the permanent magnetic chuck 4, and the other end is fixedly connected with the outer circumferential surface of the fixed disk 8. In the state shown in fig. 12, the switch handle of the permanent magnetic chuck 4 operates in a non-magnetic state, at this time, there is no magnetic attraction between the magnetic chuck surface 41 of the permanent magnetic chuck 4 and the inner ring wall surface of the brake hoop 21, the permanent magnetic chuck 4 is pulled under the stretching action of the return spring 431, at this time, the limiting rod 42 and the guide rod 43 move one section into the limiting hole and the guide hole on the outer circumferential surface of the fixed disk 8, the permanent magnetic chuck 4 approaches the outer circumferential surface of the fixed disk 8, the magnetic chuck surface 41 is separated from the contact with the brake hoop 21, and at this time, there is no magnetic attraction braking between the permanent magnetic chuck 4 and the flange 2. In the state shown in fig. 13, the switch handle of the permanent magnetic chuck 4 works in a magnetic force state, at this time, a magnetic attraction effect is provided between the magnetic chuck surface 41 of the permanent magnetic chuck 4 and the inner ring wall surface of the brake hoop 21, the permanent magnetic chuck 4 overcomes the spring force of the return spring 431 under the pulling of the magnetic attraction effect, at this time, the guide rod 43 and the guide rod 43 respectively move a section to the outside of the limiting hole and the hole of the guide hole on the outer circumferential surface of the fixed disk 8, the permanent magnetic chuck 4 approaches the brake hoop 21, the magnetic chuck surface 41 is in magnetic contact with the brake hoop 21, and at this time, a magnetic attraction braking effect is provided between the permanent magnetic chuck 4 and the flange 2.

As a preferred embodiment of the present invention, as shown in fig. 4 and 5, the present invention further comprises two cooperating permanent magnetic chucks 9, wherein the permanent magnetic chucks 4 and the two cooperating permanent magnetic chucks 9 are arranged on the outer circumferential surface of the fixed disk 8 at equal intervals. In particular, the structure of the cooperative permanent magnetic chuck 9 is mainly identical to that of the permanent magnetic chuck 4, differing only in that: the transmission shaft of the permanent magnetic chuck 4 is fixedly connected with a gear 7 and a switch handle, and the transmission shaft of the cooperative permanent magnetic chuck 9 is only fixedly connected with the gear 7. In order to realize that the magnetic attraction braking of the flange plate 2 is completed together with the cooperation of the permanent magnetic chuck 9 and the permanent magnetic chuck 4, as shown in fig. 6, the fixed shaft 111 is connected with the rotatable synchronous gear plate 3, the inner edge of the outer circumference of the synchronous gear plate 3 is formed with transmission teeth 31, wherein the permanent magnetic chuck 4 and the gear 7 on the transmission shaft of the cooperation of the permanent magnetic chuck 9 are respectively in transmission engagement with the transmission teeth 31 of the synchronous gear plate 3. In particular, in this embodiment, the switch handle on the transmission shaft of the permanent magnetic chuck 4 is connected to the telescopic member, and the other two cooperating permanent magnetic chucks 9 are in transmission engagement with the transmission teeth 31 of the synchronous gear plate 3 only through the gear 7 on the respective transmission shaft, i.e. the two cooperating permanent magnetic chucks 9 are not connected to the telescopic member. When the gear 7 on the permanent magnetic chuck 4 drives the synchronous gear plate 3 to rotate an angular displacement, the synchronous gear plate 3 which rotates the corresponding angular displacement drives two gears 7 on the permanent magnetic chuck 9 to correspondingly rotate the same angular displacement, so that the synchronous regulation of the permanent magnetic chuck 4 and the two permanent magnetic chucks 9 in cooperation is realized through the transmission action of the synchronous gear plate 3 and the gear 7, and more stable and effective magnetic attraction braking can be provided for the flange plate 2. When the cable 200 is dragged, the tension applied to the limit swing rod 12 causes the limit swing rod 12 to swing forwards to a proper position, the gear 7 on the permanent magnetic chuck 4 connected with the telescopic piece is driven by the telescopic piece to rotate to a state that the magnetic force of the permanent magnetic chuck is zero, namely the magnetic force is closed. At this time, the gear 7 on the permanent magnetic chuck 4 also drives the synchronous gear disc 3 engaged with the gear thereof due to rotation of an angular displacement, and the synchronous gear disc 3 rotates a corresponding angular displacement, and also drives the gears 7 on the other two permanent magnetic chucks 4 to rotate the same angular displacement in the same direction, thereby synchronously driving the two permanent magnetic chucks 4 to work in a state of zero magnetic force. Accordingly, when the traction machine stops traction and the cable 200 loses traction tension, the tension applied to the limit swing rod 12 by the cable 200 is not enough to keep the limit swing rod 12 at the swing angle. At this time, the gear 7 on the permanent magnetic chuck 4 connected with the telescopic member is driven to rotate back to the state that the permanent magnetic chuck has magnetic force, that is, the magnetic force is turned on. Meanwhile, the gear 7 on the permanent magnetic chuck 4 rotates an angular displacement to drive the synchronous gear disc 3 engaged with the gear, and the synchronous gear disc 3 also synchronously rotates a corresponding angular displacement to drive the gears 7 on the other two permanent magnetic chucks 4 to rotate the same angular displacement along the same direction, so that the two permanent magnetic chucks 4 are also synchronously driven to recover the magnetic force.

Through the transmission cooperation of the three permanent magnetic chucks, the gear 7 and the synchronous gear disc 3, the switch handle for controlling one permanent magnetic chuck 4 can drive two cooperative permanent magnetic chucks 9 to work simultaneously, the stability of braking is realized, and the braking performance is improved.

Further, in the preferred embodiment of the present invention, as shown in fig. 5, the telescopic member comprises a telescopic operating rod 5 and a spring 6, wherein one end of the operating rod 5 is connected to the switch handle of the permanent magnetic chuck 4, and the other end is connected to the lower end position of the limit swing link 12. One end of the spring 6 is connected to the support arm 11, and the other end is connected to the lower end of the limit swing rod 12. When the cable 200 is dragged by a tractor, the limiting swing rod 12 overcomes the tension of the spring 6 under the tension of the cable 200, and at the moment, the limiting swing rod 12 is pressed to incline forwards and has a stable front inclination angle (under the condition that the traction force is unchanged, the tension of the cable 200 is basically unchanged), namely the swing angle. Under this swing angle, the limit swing rod 12 drives the operating rod 5 to rotate by an angle, which is equivalent to rotating the switch handle of the permanent magnetic chuck 4 by an angle, and the magnetic force of the permanent magnetic chuck 4 at this angle is set to be in a closed state (zero magnetic force), that is, the magnetic pole of the permanent magnetic chuck 4 is closed, and at this time, there is no braking force on the flange plate 2, and the cable tray 100 can normally rotate. When the tractor stops dragging and paying off, the cable reel 100 can continue to rotate for a short time due to the inertia effect, the tension of the cable 200 is reduced, the acting force applied to the limiting swing rod 12 is not enough to overcome the stretching deformation acting force of the spring 6, and the spring 6 contracts and recovers deformation. Under the action of the spring 6, the limit swing rod 12 can push the cable 200 to be kept in a loose state, so that the limit swing rod 12 swings reversely by a large angle, and meanwhile, the switch handle of the permanent magnetic chuck 4 is driven to rotate reversely by an angle, so that the permanent magnetic chuck 4 generates magnetic force, the flange plate 2 is attracted, and braking is realized.

Specifically, two hinges are arranged on the limit swing rod 12 and are respectively connected with the rack 1 and the operating rod 5 of the permanent magnetic chuck 4 through pins, so that the swing of the limit swing rod 12 can drive the operating rod 5 of the permanent magnetic chuck 4 to rotate by a corresponding angle, and the opening of a magnetic switch of the permanent magnetic chuck 4 is realized, and the braking is realized.

Further, in the preferred embodiment of the present invention, as shown in fig. 2, a rotatable supporting roller 13 is disposed on the cross bar, the cable 200 led out from the cable tray 100 is transitionally led out through the supporting roller 13 and connected with the tractor, and the friction between the cable 200 and the cross bar when being dragged can be reduced through the transition of the supporting roller 13. In order to reduce the weight of the brake device, as shown in fig. 1, 2 and 6, circular through holes 32 are formed on the disc surface of the synchronizing disk 3 at equal intervals. In the embodiment of the present invention, the permanent magnetic chuck 4 adopts a pure mechanical structure in the prior art, and the magnetic control principle is not repeated here. Flange plate 2 adopts the iron ring flange, and the edge of general cable drum 100 is the metal frame structure who uses the angle steel component to constitute, the utility model provides a flange plate 2 passes through the angle steel of bolt and cable drum 100 to be connected, simple to operate, and the sound construction can realize quick installation dismantlement.

As an embodiment of the utility model, as shown in fig. 8, this cable drum automatic brake device can also be symmetrical formula braking structure, and it is shown in fig. 8 promptly, ring flange 2 is all disposed at both ends about cable drum 100, sets up the same permanent magnetism sucking disc 4, spacing pendulum rod 12 and extensible member on controlling two ring flanges 2 respectively, through the braking structure of this embodiment symmetrical formula, can realize the braking control to the cable drum 100 of heavy weight.

To sum up, the utility model discloses a cable drum automatic brake equipment can make permanent magnetic chuck work at magnetic force holding state through ingenious lever moment effect when the cable conductor loses traction force to brake the cable drum, when the cable conductor has traction tension, make permanent magnetic chuck work be zero state at magnetic force, all use mechanical structure to realize automatic control, the instability and the unexpected inefficacy that avoid using automatically controlled arresting gear to exist produce danger, do not need extra energy power, energy-concerving and environment-protective.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the foregoing embodiments and the description with reference to the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications fall within the scope of the invention as claimed, which is defined by the claims appended hereto and their equivalents.

Claims (8)

1. The utility model provides a cable drum automatic brake device, is including frame (1) that is equipped with about two support arms (11), and cable drum (100) rotate to be connected two between support arm (11), its characterized in that, at least a terminal surface of cable drum (100) is fixed with ring flange (2), ring flange (2) have braking hoop (21), support arm (11) fixedly connected with permanent magnetism sucking disc (4), the magnetic chuck face (41) of permanent magnetism sucking disc (4) with braking hoop (21) magnetism cooperation of inhaling, it is right when magnetic force has in magnetic chuck face (41) braking hoop (21), the front end of frame (1) articulates there is spacing pendulum rod (12), the upper end of spacing pendulum rod (12) is connected with the horizontal pole that is used for bearing cable conductor (200), spacing pendulum rod (12) with be connected with between the switch lever of permanent magnetism sucking disc (4) and be used for the drive permanent magnetism sucking disc (4) work is the extensible member of two repulsion states that magnetic force keeps or magnetic force is zero when cable conductor (200) lose traction tension, permanent magnetism sucking disc (4) work and the tension is in the magnetic force.

2. The automatic braking device for the cable reel according to claim 1, wherein a fixing shaft (111) is arranged between the supporting arms (11), a fixing disc (8) is fixed on the fixing shaft (111), the cable reel (100) is rotatably connected to the fixing shaft (111), one end of the flange (2) with the braking hoop (21) is opposite to the inner end of the fixing disc (8), and the permanent magnetic chuck (4) is installed on the outer circumferential surface of the fixing disc (8).

3. The automatic brake device of the cable reel according to claim 2, wherein the telescopic member comprises a telescopic operating rod (5) and a spring (6), one end of the operating rod (5) is connected with the switch handle of the permanent magnetic chuck (4), the other end of the operating rod is connected with the lower end position of the limit swing rod (12), one end of the spring (6) is connected with the supporting arm (11), and the other end of the spring is connected with the lower end position of the limit swing rod (12).

4. The automatic braking device for cable drums according to claim 3, further comprising two cooperative permanent magnetic chucks (9), wherein the permanent magnetic chucks (4) and the two cooperative permanent magnetic chucks (9) are annularly arranged on the outer circumferential surface of the fixed disc (8) at equal intervals, a gear (7) is fixedly connected to the transmission shaft of the permanent magnetic chuck (4) and the switch handle, only a gear (7) is fixedly connected to the transmission shaft of the cooperative permanent magnetic chuck (9), a rotatable synchronous gear drum (3) is connected to the fixed shaft (111), transmission teeth (31) are formed in the outer circumference of the synchronous gear drum (3) along the inner circumference, and the permanent magnetic chucks (4) and the gear (7) on the transmission shaft of the cooperative permanent magnetic chuck (9) are respectively in transmission engagement with the transmission teeth (31) of the synchronous gear drum (3).

5. The automatic brake device for cable drums according to claim 4, characterized in that the cross bar is provided with a rotatable supporting roller (13), and the cables (200) led out from the cable drum (100) are transitionally led out through the supporting roller (13) and connected with a tractor.

6. The automatic brake device of the cable reel as claimed in claim 2, wherein the outer circumferential surface of the fixed disc (8) is provided with a limiting hole, the bottom of the permanent magnetic chuck (4) is connected with a limiting rod (42), the other end of the limiting rod (42) is movably embedded in the limiting hole, and a reset mechanism is further arranged between the bottom of the permanent magnetic chuck (4) and the outer circumferential surface of the fixed disc (8).

7. The automatic braking device for cable drums according to claim 6, wherein the resetting mechanism comprises a guide rod (43) and a resetting spring (431) sleeved on the guide rod (43), the outer circumferential surface of the fixed disc (8) is provided with a guide hole, one end of the guide rod (43) is fixedly connected with the bottom of the permanent magnetic chuck (4), the other end of the guide rod is arranged in the guide hole, one end of the resetting spring (431) is fixedly connected with the bottom of the permanent magnetic chuck (4), and the other end of the resetting spring is fixedly connected with the outer circumferential surface of the fixed disc (8).

8. The automatic brake device for the cable drum according to claim 4, characterized in that the disc surface of the synchronous gear disc (3) is provided with circular through holes (32) which are distributed at equal intervals.

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