CN213834271U - Bidirectional self-locking insulation pulley - Google Patents

Abstract

The utility model provides a two-way self-locking type insulation pulley, includes insulating backplate, locating pin axle, lifting hook, prevents weighing down auto-lock subassembly, loose pulley and pulley, insulating backplate is two, two insulating backplate is relative parallel arrangement and passes through locating pin axle is fixed, the lifting hook is installed two between the insulating backplate, the pulley passes through the loose pulley and installs two between the insulating backplate, the loose pulley still hang prevent weighing down auto-lock subassembly, prevent weighing down auto-lock subassembly and hang on the loose pulley. The utility model can lock the lifting rope in two directions, prevent the heavy object from falling, reduce or even stop the falling accident; the intermittent operation of workers can be facilitated, and the physical strength is saved; the locking device has multiple purposes, and can perform unlocking operation and unidirectional or bidirectional locking operation.

Description

Bidirectional self-locking insulation pulley

Technical Field

The utility model belongs to the lifting device field, concretely relates to two-way from locking-type insulation pulley.

Background

The hoisting tackle is an important hoisting tool, and has a simple structure and convenient use. The manual pulley is to pull the dragging chain by manpower, and to drive the chain drum through the worm and worm wheel, so as to lift the heavy object. In the electric power transmission and transformation project, the manpower pulley is still widely used for transmitting objects such as porcelain bottles, tools and the like. However, in the process of lifting, the traditional manual pulley needs manpower to maintain the balance of objects all the time, and the lifting objects fall to cause accidents if people pay little attention to the manual pulley. Usually, when a worker uses a manpower pulley to perform hoisting operation, the worker must inflate once, cannot have a rest halfway, still needs to feel arduous, and has high labor intensity.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the shortcoming that current artifical coaster can't be locked and the midway rest, provided a two-way from locking-type insulation coaster.

The utility model adopts the following technical scheme:

the utility model provides a two-way self-locking type insulation pulley which the key lies in: the anti-falling device comprises two insulating guard plates, a positioning pin shaft, a lifting hook, an anti-falling self-locking assembly, pulley shafts and pulleys, wherein the two insulating guard plates are arranged in a relatively parallel mode and fixed through the positioning pin shaft, the lifting hook is arranged between the two insulating guard plates, the pulleys are arranged between the two insulating guard plates through the pulley shafts, and the self-locking anti-falling assembly is suspended on the pulley shafts. The effect of this scheme is: the anti-falling self-locking assembly can be used for preventing heavy objects from falling, effectively ensuring the safety of workers, avoiding the damage of the heavy objects and preventing accidents; and can be convenient for the workman to carry out intermittent type operation, save physical power.

According to the preferable scheme, the anti-falling self-locking assembly comprises a connecting seat, a toothed cam plate, a self-locking plate rod and a return spring, the upper end of the connecting seat is hung on the pulley shaft, the toothed cam plate is installed at the lower end of the connecting seat through a rotating shaft, the self-locking plate rod is rotatably installed on the toothed cam plate, the return spring is connected between the near end of the self-locking plate rod and the tip end of the toothed cam plate cam, and the far end of the self-locking plate rod is provided with a limit clip which is perpendicular to the toothed cam plate. The effect of this scheme is: when an operator loosens the rope on the right side, the rope can be loosened when the operator needs to rest without applying pulling force or without force, the rope can be naturally driven by the heavy object on the left side to fall downwards, the cam is always pressed on the rope and can move downwards together with the rope, and when the cam rotates for a certain angle due to the special structure of the cam, the rope can be firmly locked, so that the rope cannot continue to fall.

As a preferred scheme, a rotary connecting block is further arranged between the two insulation guard plates, and the lifting hook is installed on the insulation guard plates through the rotary connecting block. The effect of this scheme is: the rotary connecting block can be convenient for hang the lifting hook, adapts to different directions and hangs.

Preferably, the number of the pulleys is at least 2, and each pulley corresponds to one anti-falling self-locking assembly. The effect of this scheme is: the combination of a plurality of pulleys is more laborsaving, can be convenient for adjust manpower pulling direction simultaneously.

Preferably, the connecting seat is provided with a sling groove, and the toothed cam plate can rotate into the sling groove. The effect of this scheme is: the good limiting effect is ensured, and the lifting rope is firmly clamped in the lifting rope groove.

Preferably, the lifting hook is provided with a spring buckle, and the spring buckle is used for opening and closing the lifting hook. The effect of this scheme is: the lifting hook can be effectively prevented from slipping off.

Has the advantages that: the bidirectional self-locking insulation pulley can bidirectionally lock a lifting rope, prevent heavy objects from falling, reduce or even eliminate falling accidents; the intermittent operation of workers can be facilitated, and the physical strength is saved; the locking device has multiple purposes, and can perform unlocking operation and unidirectional or bidirectional locking operation.

Drawings

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

FIG. 2 is a schematic view of the fall arrest self locking assembly 4 in an open state;

FIG. 3 is a schematic view of the fall protection self-locking assembly 4 in a self-locking state.

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings:

example (b):

as shown in the attached drawing 1, a two-way self-locking insulation pulley, including insulation backplate 1, positioning pin axle 2, lifting hook 3, prevent weighing down auto-lock subassembly 4, pulley shaft 5 and pulley 6, insulation backplate 1 is equipped with two, two insulation backplate 1 are relative parallel arrangement and fixed through positioning pin axle 2, lifting hook 3 is installed between two insulation backplate 1, pulley 6 passes through pulley shaft 5 and installs between two insulation backplate 1, pulley shaft 5 has still hung and has prevented weighing down auto-lock subassembly 4, be equipped with the snak link on the lifting hook 3, this snak link is used for opening lifting hook 3 and closing, still be equipped with swivelling joint block 7 between two insulation backplate 1, lifting hook 3 passes through swivelling joint block 7 and installs on insulation backplate 1.

In specific implementation, the anti-falling self-locking assembly comprises a connecting seat 41, a toothed cam plate 42, a self-locking plate rod 43 and a return spring 44, wherein the upper end of the connecting seat 41 is hung on the pulley shaft 6, the toothed cam plate 42 is installed at the lower end of the connecting seat 41 through a rotating shaft, the self-locking plate rod 43 is installed on the toothed cam plate 42 in a rotating mode, the return spring 44 is connected between the near end of the self-locking plate rod 43 and the cam tip of the toothed cam plate 42, a limiting clip is arranged at the far end of the self-locking plate rod 43 and perpendicular to the toothed cam plate 42, a sling groove is formed in the connecting seat 41, and the toothed cam plate 42 can rotate into the sling groove.

For the unidirectional or bidirectional locking of the pulleys 6, at least 2 pulleys 6 are provided, preferably 2 pulleys 6 are provided in the present embodiment, and each of the 2 pulleys 6 corresponds to one fall prevention self-locking assembly 4. When the anti-falling self-locking component is used specifically, the lifting hook 3 is hung at an ideal position according to the requirement, then the phi 12 insulating rope is penetrated, and the anti-falling self-locking component 4 comprises two sets, namely a left set and a right set. When the insulating rope is threaded, the left and right sides of the toothed cam plate 42 of the anti-falling self-locking assembly 4 are in an open state, and the toothed cam plate is in a non-self-locking state, and after the rope is threaded, the following settings can be set according to the working condition:

1. the rope does not need self-locking, and when the common pulley is used:

the left and right anti-falling self-locking assemblies 4 are set according to the state of the attached figure 2; the self-locking plate rod 43 is hung on the side plate of the connecting seat 41 by pulling the self-locking plate rod 43. Because the rotating shaft of the toothed cam plate 42 is provided with the return spring 44, the self-locking plate rod 43 can be stably hung on the side plate of the connecting seat 41 and cannot be bounced. At this time, the insulating rope can freely rotate left and right as a common insulating tackle.

2. Left self-locking, right opening (left rope hanging heavy object, right lifting):

the right anti-falling self-locking assembly 4 is set according to the attached figure 2, and the self-locking plate rod 43 is hung on the side plate of the connecting seat 41 by pulling the self-locking plate rod 43;

the right anti-falling self-locking assembly 4 is set according to the attached figure 3, the self-locking plate rod 43 is pulled to hang the self-locking plate rod 43 in the side plate of the connecting seat 41, and the cam tip of the toothed cam plate 42 can stably press on the insulating rope in the rope hanging groove of the connecting seat 41 because the rotating shaft of the toothed cam plate 42 is provided with the return spring 44.

When the heavy object is lifted, the heavy object tied on the left rope can be lifted upwards by applying a pulling force downwards on the right side, and the left rope moves upwards to automatically jack the cam open without locking the rope. If operating personnel loosens the rope on the right, when not exerting pulling force or operating personnel exhaustion and need the rest, can loosen the rope, the rope can be driven downwards to fall down by the heavy object on the left naturally, because the cam is pressed on the rope always, can with the rope downstream together, when the special construction of cam makes rotation certain angle, can firmly pin the rope, make it can't continue to fall down.

3. Self-locking on the right, opening on the left (hanging heavy object on the right, hoisting on the left): the right self-locking, the left opening, the left self-locking and the right opening are just opposite, and the method is the same.

The utility model discloses need notice following several when using:

(1) before use, whether the pulley 6 rotates flexibly or not should be checked, and the phenomenon of spacious movement cannot occur; checking whether each nut is screwed in place; whether the hook 3 rotates flexibly and whether the elastic force of the return spring 44 is moderate and reliable.

(2) The anti-falling self-locking components 4 on the left side and the right side cannot be damaged and should be self-locked reliably.

(3) Regular inspection and maintenance, the pulley with damage of the anti-falling self-locking assembly 4 is forbidden to use, and accidents are avoided. The pulley shaft 5 should be cleaned and filled with grease once every half year.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims (6)

1. The utility model provides a two-way self-locking type insulation pulley which characterized in that: including insulating backplate (1), locating pin axle (2), lifting hook (3), prevent weighing down auto-lock subassembly (4), loose pulley (5) and pulley (6), insulating backplate (1) is equipped with two, two insulating backplate (1) is relative parallel arrangement and passes through locating pin axle (2) are fixed, lifting hook (3) are installed two between insulating backplate (1), install two through loose pulley (5) pulley (6) between insulating backplate (1), loose pulley (5) still hang prevent weighing down auto-lock subassembly (4).

2. The bidirectional self-locking insulation pulley as recited in claim 1, wherein: the anti-falling self-locking assembly comprises a connecting seat (41), a toothed cam plate (42), a self-locking plate rod (43) and a reset spring (44), wherein the upper end of the connecting seat (41) is hung on the pulley shaft (5), the toothed cam plate (42) is installed at the lower end of the connecting seat (41) through a rotating shaft, the self-locking plate rod (43) is installed on the toothed cam plate (42) in a rotating mode, the near end of the self-locking plate rod (43) is connected with the reset spring (44) between the cam tips of the toothed cam plate (42), and the far end of the self-locking plate rod (43) is provided with a limit clip which is perpendicular to the toothed cam plate (42).

3. A bi-directional self-locking insulation block as claimed in claim 1 or 2, wherein: and a rotary connecting block (7) is further arranged between the two insulation protective plates (1), and the lifting hook (3) is installed on the insulation protective plates (1) through the rotary connecting block (7).

4. A bi-directional self-locking insulation tackle as claimed in claim 3, wherein: the number of the pulleys (6) is at least 2, and each pulley (6) corresponds to one anti-falling self-locking assembly (4).

5. The bidirectional self-locking insulation pulley as recited in claim 2, wherein: the connecting seat (41) is provided with a sling groove, and the cam plate (42) with teeth can rotate into the sling groove.

6. The bidirectional self-locking insulation pulley as recited in claim 1, wherein: and a spring buckle is arranged on the lifting hook (3) and used for opening and closing the lifting hook (3).

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