CN210176346U - Rotary pulley protection mechanism of electric lifting device of direct-current motor - Google Patents

Abstract

The utility model discloses a DC motor electric lifting device's rotatory pulley protection machanism, including rotatory pulley, the inside horizontal fixedly connected with slide bar of rotatory pulley, the equal sliding connection in both sides on slide bar surface has the sliding ring, the bottom fixedly connected with movable plate of sliding ring, the inboard fixedly connected with spring of movable plate, the outside fixedly connected with buffer beam of movable plate. The utility model discloses a set up the cooperation of rotatory pulley, slide bar, sliding ring, movable plate, spring, buffer beam, guard plate, riser, transfer line, spout, slider, lifter plate, driving plate, inclined hole, race, fixed block, support, extension spring and gyro wheel and use, solved the problem that current rotatory pulley does not have safeguard function, this DC motor electric lifting device's rotatory pulley protection machanism possesses safeguard function's advantage, and rotatory pulley is difficult for receiving the collision, has prolonged rotatory pulley's life.

Description

Rotary pulley protection mechanism of electric lifting device of direct-current motor

Technical Field

The utility model relates to a pulley technical field specifically is a DC motor electric lifting device's rotatory pulley protection machanism.

Background

In mechanics, a typical pulley (pulley) is a round wheel that can rotate around a central shaft, a groove is formed on the circumference of the round wheel, a rope is wound in the groove, and any one of two ends of the rope is pulled by force, so that friction between the rope and the round wheel can drive the round wheel to rotate around the central shaft, and the pulley can be divided into a fixed pulley and a movable pulley according to whether the position of the central shaft of the pulley moves or not; the central shaft of the fixed pulley is fixed, the central shaft of the movable pulley can move, the main functions of the pulleys are to draw load, change force application direction, transmit power and the like, a machine formed by a plurality of pulleys is called as a pulley block or a compound pulley, the mechanical benefit of the pulley block is large, heavy load can be drawn, and the pulleys can also be chain transmission or belt transmission components to transmit power from one rotating shaft to another rotating shaft.

The rotating pulley is one of pulleys, and the rotating pulley is inevitably collided when in use, and needs to be protected in order to prolong the service life of the rotating pulley.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a DC motor electric lifting device's rotatory pulley protection machanism possesses safeguard function's advantage, has solved current rotatory pulley and has not safeguard function's problem.

In order to achieve the above object, the utility model provides a following technical scheme: a rotary pulley protection mechanism of a direct current motor electric lifting device comprises a rotary pulley, wherein a slide rod is transversely and fixedly connected inside the rotary pulley, slide rings are respectively and slidably connected to two sides of the surface of the slide rod, a moving plate is fixedly connected to the bottom of the slide rings, a spring is fixedly connected to the inner side of the moving plate, a buffer rod is fixedly connected to the outer side of the moving plate, a protection plate is fixedly connected to the outer end of the buffer rod, the outer end of the buffer rod penetrates through the outer part of the rotary pulley, a vertical plate is fixedly connected to the top of the slide ring, a transmission rod is fixedly connected to the top of the front surface of the vertical plate, slide grooves are respectively formed in the tops of two sides of the inner wall of the rotary pulley, a slide block is slidably connected inside the slide grooves, a lifting plate is fixedly connected to the inner side, the pulley groove has all been seted up to the both sides at lifter plate top, the equal fixedly connected with fixed block in both sides at rotatory pulley inner wall top, the front swing joint of fixed block has the support, the inboard fixedly connected with extension spring of support, the bottom swing joint of support has the gyro wheel, the bottom of gyro wheel extends to the inside of pulley groove and the bottom contact of pulley groove inner wall.

Preferably, the outer side of the protection plate is fixedly connected with a rubber pad, and the rubber pad is matched with the protection plate for use.

Preferably, both sides of the surface of the sliding rod and the outer side of the sliding ring are fixedly connected with limiting rings, and the inner sides of the limiting rings are in contact with the outer side of the sliding ring.

Preferably, the moving plate is located at the rear side of the transmission plate, and the surface of the transmission rod is in sliding connection with the inner wall of the inclined hole.

Preferably, the groove type of spout is trapezoidal, the cross section of slider is trapezoidal, the slider uses with the spout cooperation.

Preferably, the both sides at lifter plate top just are located the equal fixedly connected with stopper in inboard in race, the outside of stopper and the surface contact of gyro wheel.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up the cooperation of rotatory pulley, slide bar, sliding ring, movable plate, spring, buffer beam, guard plate, riser, transfer line, spout, slider, lifter plate, driving plate, inclined hole, race, fixed block, support, extension spring and gyro wheel and use, solved the problem that current rotatory pulley does not have safeguard function, this DC motor electric lifting device's rotatory pulley protection machanism possesses safeguard function's advantage, and rotatory pulley is difficult for receiving the collision, has prolonged rotatory pulley's life.

2. The utility model discloses a set up the rubber pad, can slow down the striking dynamics that the guard plate received, prolonged the life of guard plate, through setting up the spacing ring, can restrict the sliding ring to the gliding position in the outside, through the cooperation that sets up transfer line and inclined hole, can drive the driving plate and rise and descend, through setting up spout and slider, can increase the stability that the lifter plate goes up and down, slope when preventing the lifter plate to go up and down, through setting up the race, can cooperate the gyro wheel to use, slope when preventing that the gyro wheel from rolling.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of A in FIG. 1;

FIG. 3 is an enlarged view of a portion of B in FIG. 1;

fig. 4 is a right side view of the slide bar and slide ring of fig. 1 according to the present invention.

In the figure: the device comprises a rotary pulley 1, a sliding rod 2, a sliding ring 3, a moving plate 4, a spring 5, a buffer rod 6, a protection plate 7, a vertical plate 8, a transmission rod 9, a sliding chute 10, a sliding block 11, a lifting plate 12, a transmission plate 13, an inclined hole 14, a wheel groove 15, a fixed block 16, a bracket 17, a tension spring 18, a roller 19, a rubber pad 20, a limiting ring 21 and a limiting block 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a rotating pulley protection mechanism of a dc motor electric lifting device comprises a rotating pulley 1, a sliding rod 2 is transversely and fixedly connected inside the rotating pulley 1, a sliding ring 3 is slidably connected to both sides of the surface of the sliding rod 2, a limiting ring 21 is fixedly connected to both sides of the surface of the sliding rod 2 and outside the sliding ring 3, the inner side of the limiting ring 21 contacts with the outer side of the sliding ring 3, the sliding position of the sliding ring 3 to the outer side can be limited by arranging the limiting ring 21, a moving plate 4 is fixedly connected to the bottom of the sliding ring 3, a spring 5 is fixedly connected to the inner side of the moving plate 4, a buffer rod 6 is fixedly connected to the outer side of the moving plate 4, a protection plate 7 is fixedly connected to the outer side of the rotating pulley 1 through the outer end of the buffer rod 6, a rubber pad 20 is fixedly, the rubber pad 20 is arranged, the impact force received by the protection plate 7 can be relieved, the service life of the protection plate 7 is prolonged, the top of the sliding ring 3 is fixedly connected with the vertical plate 8, the top of the front side of the vertical plate 8 is fixedly connected with the transmission rod 9, the tops of two sides of the inner wall of the rotating pulley 1 are respectively provided with the sliding groove 10, the sliding block 11 is slidably connected inside the sliding groove 10, the groove shape of the sliding groove 10 is trapezoidal, the cross section of the sliding block 11 is trapezoidal, the sliding block 11 is matched with the sliding groove 10 for use, the lifting stability of the lifting plate 12 can be improved by arranging the sliding groove 10 and the sliding block 11, the lifting plate 12 is prevented from inclining when being lifted, the lifting plate 12 is fixedly connected inside the sliding block 11, the two sides of the top of the lifting plate 12 and the inner sides of the wheel groove 15 are respectively and fixedly connected, prevent that gyro wheel 19 from inclining when rolling, the equal fixedly connected with driving plate 13 in both sides of lifter plate 12 bottom, inclined hole 14 that uses with the cooperation of transfer line 9 is seted up in the front of driving plate 13, riser 8 is located the rear side of driving plate 13, the surface of transfer line 9 and the inner wall sliding connection of inclined hole 14, through the cooperation that sets up transfer line 9 and inclined hole 14, can drive driving plate 13 and rise and descend, race 15 has all been seted up to the both sides at lifter plate 12 top, the equal fixedly connected with fixed block 16 in both sides at rotatory pulley 1 inner wall top, the front swing joint of fixed block 16 has support 17, the inboard fixedly connected with extension spring 18 of support 17, the bottom swing joint of support 17 has gyro wheel 19, the bottom of gyro wheel 19 extends to race 15's inside and contacts with the bottom of race 15 inner wall, through setting up rotatory pulley 1, slide bar 2, sliding ring 3, the movable plate 4, buffer beam 6, guard plate 7, riser 8, transfer line 9, spout 10, slider 11, lifter plate 12, driving plate 13, inclined hole 14, race 15, fixed block 16, support 17, extension spring 18 and gyro wheel 19's cooperation is used, has solved the problem that current rotatory pulley does not have safeguard function, and this direct current motor electric lifting device's rotatory pulley protection machanism possesses safeguard function's advantage, and rotatory pulley is difficult for receiving the collision, has prolonged rotatory pulley's life.

When the rotary pulley is used, when an external object is about to impact the rotary pulley 1, the rubber pad 20 absorbs a certain impact force, the rubber pad 20 drives the protection plate 7 to move inwards, the protection plate 7 drives the buffer rod 6 to move inwards, the buffer rod 6 drives the moving plate 4 to move inwards and compress the spring 5, the moving plate 4 drives the sliding ring 3 to slide inwards on the surface of the sliding rod 2, the sliding ring 3 drives the transmission rod 9 to slide inwards in the inclined hole 14 through the vertical plate 8, and simultaneously drives the transmission plate 13 to ascend, the transmission plate 13 drives the lifting plate 12 to ascend, the lifting plate 12 drives the sliding block 11 to slide and ascend in the sliding chute 10, the lifting plate 12 ascends to enable the roller 19 to roll outwards in the wheel groove 15, and simultaneously, the bracket 17 is driven to rotate outwards, the bracket 17 rotates outwards to stretch the tension spring 18, and the purpose of relieving the impact force is achieved, so that the rotary pulley 1 has a protection function.

In summary, the following steps: this electronic hoisting device's of direct current motor rotatory pulley protection machanism through the cooperation that sets up rotatory pulley 1, slide bar 2, sliding ring 3, movable plate 4, spring 5, buffer beam 6, guard plate 7, riser 8, transfer line 9, spout 10, slider 11, lifter plate 12, driving plate 13, inclined hole 14, race 15, fixed block 16, support 17, extension spring 18 and gyro wheel 19 and use, has solved the problem that current rotatory pulley does not have safeguard function.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a DC motor electric lifting device's rotatory pulley protection machanism, includes rotatory pulley (1), its characterized in that: the inner part of the rotating pulley (1) is transversely and fixedly connected with a sliding rod (2), two sides of the surface of the sliding rod (2) are respectively and slidably connected with a sliding ring (3), the bottom of the sliding ring (3) is fixedly connected with a moving plate (4), the inner side of the moving plate (4) is fixedly connected with a spring (5), the outer side of the moving plate (4) is fixedly connected with a buffer rod (6), the outer end of the buffer rod (6) penetrates through to the outer part of the rotating pulley (1) to be fixedly connected with a protection plate (7), the top of the sliding ring (3) is fixedly connected with a vertical plate (8), the front top of the vertical plate (8) is fixedly connected with a transmission rod (9), the tops of two sides of the inner wall of the rotating pulley (1) are respectively provided with a sliding groove (10), the inner part of the sliding groove (10) is, the equal fixedly connected with driving plate (13) in both sides of lifter plate (12) bottom, inclined hole (14) that use with transfer line (9) cooperation are seted up in the front of driving plate (13), race (15) have all been seted up to the both sides at lifter plate (12) top, the equal fixedly connected with fixed block (16) in both sides at rotatory pulley (1) inner wall top, the positive swing joint of fixed block (16) has support (17), inboard fixedly connected with extension spring (18) of support (17), the bottom swing joint of support (17) has gyro wheel (19), the bottom of gyro wheel (19) extends to the inside of race (15) and the bottom contact of race (15) inner wall.

2. The rotating sheave guard mechanism for a dc motor powered lifting device of claim 1, wherein: the outer side of the protection plate (7) is fixedly connected with a rubber pad (20), and the rubber pad (20) is matched with the protection plate (7) for use.

3. The rotating sheave guard mechanism for a dc motor powered lifting device of claim 1, wherein: the sliding rod is characterized in that limiting rings (21) are fixedly connected to the two sides of the surface of the sliding rod (2) and the outer sides of the sliding rings (3), and the inner sides of the limiting rings (21) are in contact with the outer sides of the sliding rings (3).

4. The rotating sheave guard mechanism for a dc motor powered lifting device of claim 1, wherein: the vertical plate (8) is located on the rear side of the transmission plate (13), and the surface of the transmission rod (9) is connected with the inner wall of the inclined hole (14) in a sliding mode.

5. The rotating sheave guard mechanism for a dc motor powered lifting device of claim 1, wherein: the groove type of the sliding groove (10) is trapezoidal, the cross section of the sliding block (11) is trapezoidal, and the sliding block (11) is matched with the sliding groove (10) for use.

6. The rotating sheave guard mechanism for a dc motor powered lifting device of claim 1, wherein: the both sides at lifter plate (12) top and be located equal fixedly connected with stopper (22) of inboard of race (15), the outside of stopper (22) and the surface contact of gyro wheel (19).

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