CN107285225B

CN107285225B - Electric hoist with rope breakage protection function

Info

Publication number: CN107285225B
Application number: CN201710669669.3A
Authority: CN
Inventors: 杨童垒
Original assignee: GRAND ASIA MACHINERY INDUSTRY (KUNSHAN) CO LTD
Current assignee: GRAND ASIA MACHINERY INDUSTRY (KUNSHAN) CO LTD
Priority date: 2017-08-08
Filing date: 2017-08-08
Publication date: 2023-04-07
Anticipated expiration: 2037-08-08
Also published as: CN107285225A

Abstract

The invention discloses an electric hoist with a rope breakage protection function, which comprises a reel seat, a lifting hook and a movable pulley fixed on the lifting hook, wherein a reel machine is fixedly arranged above the reel seat, a pulley hanging plate is fixedly arranged on one side of the reel seat, a balance pulley is arranged in the pulley hanging plate, a steel wire rope sequentially passes through the movable pulley and the balance pulley, and two ends of the steel wire rope at the balance pulley are fixedly provided with steel wire rope clamping blocks close to the pulley hanging plate. The steel wire rope clamping blocks clamped on the steel wire ropes at the two ends of the balance pulley are utilized to reserve a safe gliding distance with the pulley hanging bracket, and when the steel wire rope on one side is broken, the steel wire rope clamping blocks are lifted to be clamped with the pulley hanging bracket, so that the heavy object is ensured not to fall.

Description

Electric hoist with rope breakage protection function

Technical Field

The invention relates to an electric hoist with a rope breakage protection function, and belongs to the technical field of electric hoists.

Background

The general electric hoist has no rope breaking (wire rope) protection function when adopting a balance pulley. And use electric block to adopt the balancing pole for increasing disconnected rope protect function in important occasion, utilize wire rope both ends fixed method respectively to realize, but its installation and debugging are more complicated, need guarantee absolute synchronization height to the adjustment range is limited, when electric block handling heavy object, because rock or incline the reason of hanging to one side and easily cause the balancing pole swing and make the high difference of wire rope aggravate the unbalance of hoist, arouse the inconvenience of using, increase the potential safety hazard.

Disclosure of Invention

The invention aims to solve the technical problem of providing an electric hoist with a rope breakage protection function, wherein a safe downward sliding distance is reserved between the electric hoist and a pulley hanging bracket by using a steel wire rope clamping block clamped on steel wire ropes at two ends of a balance pulley, and when one side of the steel wire rope is broken, the steel wire rope clamping block is lifted to be clamped with the pulley hanging bracket, so that a heavy object is ensured not to fall.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides an electric block with disconnected rope protect function, includes reel seat, lifting hook and fixes the movable pulley on the lifting hook, the fixed reel machine that is provided with in top of reel seat, the fixed pulley hanger plate that is provided with in one side of reel seat, be provided with balanced pulley in the pulley hanger plate, wire rope loops through movable pulley and balanced pulley, the fixed wire rope clamp splice that is provided with near at the both ends of the wire rope of balanced pulley department the pulley hanger plate.

The electric hoist with the rope breaking protection function is characterized in that: and the upper end of the steel wire rope clamping block is fixedly connected with an elastic compression seat.

The electric hoist with the rope breaking protection function is characterized in that: the steel wire rope clamping block comprises two clamping plates clamped outside the steel wire rope, and the two clamping plates are locked and fixed through a plurality of groups of bolts and nuts.

The electric hoist with the rope breaking protection function is characterized in that: the lifting hook includes the lifting hook main part, the upper end of lifting hook main part open end is provided with the pivot, be provided with its pivoted first section safety knot relatively in the pivot, the lower tip that first section safety was detained is provided with its pivoted second section safety knot relatively, just it is right to be provided with in the pivot first section safety knot and second section safety knot provide the torsion spring of elasticity.

The electric hoist with the rope breaking protection function is characterized in that: the first section safety buckle is bent, the section of the second section safety buckle is of a U-shaped structure, and the bent part of the first section safety buckle extends into the second section safety buckle.

The electric hoist with the rope breaking protection function is characterized in that: one end of the torsion spring is abutted against the lifting hook main body, and the other end of the torsion spring is abutted against the bending part of the first section of safety buckle and extends into the second section of safety buckle.

The invention has the beneficial effects that:

1. the steel wire rope clamping blocks clamped on the steel wire ropes at the two ends of the balance pulley are utilized to reserve a safe gliding distance with the pulley hanging bracket, and when the steel wire rope at one side is broken, the steel wire rope clamp ascends to be clamped with the pulley hanging bracket, so that a heavy object is ensured not to fall;

2. an elastic compression seat is additionally arranged between the steel wire rope clamping block and the pulley hanging bracket to reduce the impact of the steel wire rope clamp on the pulley hanging bracket, so that the hanging object is stable, and secondary damage caused by the bouncing of a heavy object is avoided;

3. through detaining safety into two segmentation structures that can relatively rotate to have certain relative position deflection relatively, bump or rock when having the external force mistake and make safety detain to throw off the rotation of direction, at first can rotate the reservation position deflection between the two, safety detain and the lifting hook remains the laminating state all the time, improves the security performance greatly.

Drawings

Fig. 1 is a side view of an electric block having a rope breakage protection function according to the present invention;

fig. 2 is a front view of an electric block with a rope breakage protection function according to the present invention;

FIG. 3 is an enlarged schematic view of A in FIG. 2;

fig. 4 is a front view of a pulley hanger plate of an electric block having a rope breakage preventing function according to the present invention;

fig. 5 is a side view of a pulley hanger of an electric block having a rope breakage preventing function according to the present invention;

fig. 6 is a schematic structural diagram of a lifting hook of an electric hoist with a rope breakage protection function according to the invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-6, an electric block with rope breakage protection function includes reel seat 1, lifting hook 4 and movable pulley 5 fixed on lifting hook 4, the fixed reel 2 that is provided with in top of reel seat 1, the fixed pulley hanger plate 3 that is provided with in one side of reel seat 1, be provided with balanced pulley 6 in the pulley hanger plate 6, wire rope 8 loops through movable pulley 5 and balanced pulley 6, the fixed wire rope clamp splice 8 that is close to of the wire rope 8 of balanced pulley 6 department is provided with at both ends of wire rope 8.

As shown in fig. 1 and 2, by fixing the steel wire rope clamping blocks 8 on the steel wire ropes at the two ends of the balance pulley 6, no matter which side of the steel wire rope is broken, the corresponding steel wire rope clamping block rises to be clamped with the pulley hanger, so that the heavy object is ensured not to fall. In this embodiment, there is certain safe gliding distance between wire rope clamp splice 8 and the pulley hanger plate 3, guarantees in the normal use, because slight rocking, the wire rope of balance pulley 6 department still can be done the upper and lower slip of certain range to make the normal use that electric block can not be influenced in installing additional of wire rope clamp splice 8.

The upper end of the steel wire rope clamping block 8 is fixedly connected with an elastic compression seat 9, and the elastic compression seat is additionally arranged between the steel wire rope clamping block and the pulley hanging bracket to reduce the impact of the steel wire rope clamp on the pulley hanging bracket, so that the hanging object is stable, and the secondary damage caused by the bouncing of a heavy object is avoided.

In this embodiment, the wire rope clamp splice 8 includes two splint 81 of centre gripping outside the wire rope 8, and it is fixed to lock through multiunit bolt 82 and nut 83 between two splint 81, and not only simple structure is compact, and convenient assembling moreover, but also automatic alignment, the functional reliability is high.

Hook 4 includes hook body 41, the upper end of hook body 41 open end is provided with pivot 42, be provided with its pivoted first section safety knot 43 relatively in the pivot 42, the lower tip of first section safety knot 43 is provided with its pivoted second section safety knot 44 relatively, just it is right to be provided with in the pivot 42 first section safety knot 43 and second section safety knot 44 provide the torsion spring 46 of elasticity.

Through detaining safety into two segmentation structures that can rotate relatively, and certain relative position deflection has relatively, there is the external force mistake to bump or rock and make safety buckle to throw off the direction when rotating, the upper end that at first can make second section safety buckle is detained relatively first section safety and is taken place the rotation, but its lower tip supports the lower extreme that leans on the lifting hook open end all the time, make the opening be in the closure state, it is the reservation position deflection between the two just beginning to rotate promptly, safety buckle and lifting hook remain the laminating state all the time, only when continuously receiving the external force effect, reserve the position deflection between the two and walk the back, just can make second safety buckle the pivot rotation of the relative lifting hook upper end of random first safety buckle, thereby open safety buckle, the security performance is greatly improved.

The first section of safety buckle 43 is bent, the cross section of the second section of safety buckle 44 is of a U-shaped structure, and the bent part of the first section of safety buckle 43 extends into the second section of safety buckle 44. In the process of rotation, when the top end of the second safety buckle section 44 rotates to contact with the bent part of the first safety buckle section 43, the deformation between the two is completed, and if a continuous acting force is still applied, generally speaking, the operation is indicated as manual operation, and the safety buckle does need to be opened.

One end of the torsion spring 46 abuts against the hook body 41, and the other end abuts against the bent part of the first safety buckle section 43 and extends into the second safety buckle section 44. Under the action of no external force, the second-stage safety catch 44 can ensure that the lower end part of the second-stage safety catch is always in close contact with the lower end part of the opening part of the lifting hook under the action of the torsion spring 46, so that safety accidents are avoided.

In summary, according to the electric hoist with the rope breakage protection function provided by the invention, the steel wire rope clamping blocks clamped on the steel wire ropes at the two ends of the balance pulley are utilized to reserve a safe downward sliding distance with the pulley hanging bracket, and when the steel wire rope on one side is broken, the steel wire rope clamping blocks are lifted to be clamped with the pulley hanging bracket, so that the heavy object is prevented from falling.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An electric hoist with a rope breakage protection function comprises a reel seat (1), a lifting hook (4) and a movable pulley (5) fixed on the lifting hook (4), wherein a reel wheel (2) is fixedly arranged above the reel seat (1), a pulley hanging plate (3) is fixedly arranged on one side of the reel seat (1), a balance pulley (6) is arranged in the pulley hanging plate (3), a steel wire rope sequentially passes through the movable pulley (5) and the balance pulley (6), and steel wire rope clamping blocks (8) close to the pulley hanging plate (3) are fixedly arranged at two ends of the steel wire rope at the balance pulley (6); the method is characterized in that: lifting hook (4) are including lifting hook main part (41), the upper end of lifting hook main part (41) open end is provided with pivot (42), but be provided with in pivot (42) and detain (43) its pivoted first section safety relatively, the lower tip of detaining (43) is provided with and detains (44) its pivoted second section safety relatively, just it is right to be provided with in pivot (42) first section safety is detained (43) and second section safety and is detained (44) torsion spring (46) that provide elasticity.

2. The electric hoist with the rope breakage protection function according to claim 1, characterized in that: the upper end of the steel wire rope clamping block (8) is fixedly connected with an elastic compression seat (9).

3. The electric hoist with the rope breakage protection function according to claim 1, characterized in that: the steel wire rope clamping block (8) comprises two clamping plates (81) clamped outside the steel wire rope, and the two clamping plates (81) are locked and fixed through a plurality of groups of bolts (82) and nuts (83).

4. The electric hoist with the rope breakage protection function according to claim 3, characterized in that: the first section of safety buckle (43) is bent, the cross section of the second section of safety buckle (44) is of a U-shaped structure, and the bent part of the first section of safety buckle (43) extends into the second section of safety buckle (44).

5. The electric hoist with the rope breakage protection function according to claim 3, characterized in that: one end of the torsion spring (46) is abutted against the hook main body (41), and the other end of the torsion spring is abutted against the bent part of the first section of safety buckle (43) and extends into the second section of safety buckle (44).