CN211644433U - Integral combined type loose pulley assembly for lower hook frame device of lever block - Google Patents

Abstract

The utility model discloses a hook frame device is with whole combination formula loose pulley subassembly under lever block belongs to lever block part technical field. It includes the loose pulley, loose pulley dabber and kingpin, the loose pulley dabber is by the main shaft section, a journal, another journal and the shaft shoulder of neighbouring another journal are constituteed, the shaft hole with loose pulley dabber looks adaptation is seted up to the loose pulley, the loose pulley is corresponding to shaft shoulder axial one side in its shaft hole, the longer of opposite side, the annular groove is established respectively to shorter main shaft section position, the jump ring groove, the kingpin is installed in this annular groove, and the two ends of each kingpin are injectd between the tank bottom of annular groove and shaft shoulder, circlip installs in the jump ring groove and supports and lean on the shaft shoulder. The utility model discloses abandoned split type configuration structure, because the bearing pin is sealed in the enclosure space who encloses by the ring channel of loose pulley, the main part section and the shaft shoulder of loose pulley dabber, and the bearing pin can minimize for the clearance design of loose pulley dabber, can prevent that the dust from invading, ensures that the loose pulley rotates smoothly.

Description

Integral combined type loose pulley assembly for lower hook frame device of lever block

[ technical field ] A method for producing a semiconductor device

The utility model relates to a hook frame device is with whole combination formula loose pulley subassembly under lever block belongs to lever block part technical field.

[ background of the invention ]

The loose pulley component for the lower hook frame device of the lever hoist in the prior art only comprises a loose pulley, a loose pulley shaft and a rolling needle, wherein the loose pulley shaft is of an optical shaft structure, the loose pulley is provided with a rolling needle groove, the rolling needle is positioned between the rolling needle groove and the optical shaft, the optical shaft and the rolling needle are designed in a loose fit mode, and two shaft ends of the optical shaft are arranged in round holes formed in the corresponding lower hook frame plates so as to assemble the lower hook frame device.

The careful analysis of the loose pulley component of the existing split configuration structure can find that the following technical defects exist:

in the process of maintenance and disassembly of a hoisting operation field, the loose axle is taken away, and the rolling needles usually fall off, so that the rolling needles are sometimes neglected to be assembled;

due to loose matching of the optical axis and the roller pins, the sealing performance is poor, dust is easy to invade and adhere to the roller pins, and the normal work of the roller pins is influenced;

the optical axis is fixed unreliable, and the optical axis also can rotate when the loose pulley rotates.

[ Utility model ] content

The utility model aims at providing a smooth and easy lever block hook frame device is with whole combination formula loose pulley subassembly down rotates, and this subassembly can prevent the dust invasion.

The utility model discloses the technical problem that still need solve provides a guarantee during loose pulley rotation that the relative pivoted lever block hook frame device is down with whole combination formula loose pulley subassembly to loose pulley dabber not take place.

Therefore, the utility model adopts the following technical scheme:

the utility model provides a lever block hook frame device is with whole combination formula loose pulley subassembly down, includes loose pulley, loose pulley dabber and kingpin, and its improvement point lies in: the loose pulley mandrel is composed of a main shaft section, a shaft neck, another shaft neck and a shaft shoulder, wherein the shaft neck and the another shaft neck are respectively located at two ends of the main shaft section, the shaft neck is located at the position, close to the another shaft neck, of the main shaft section, the loose pulley is provided with a shaft hole matched with the loose pulley mandrel, the loose pulley mandrel penetrates through the shaft hole, the shaft neck and the another shaft neck respectively extend out and are located at two sides of the loose pulley, an annular groove for installing a roller pin is concavely arranged in the position, corresponding to the main shaft section with the longer axial side of the shaft shoulder, of the shaft hole of the loose pulley, a clamp spring groove for installing an elastic check ring is concavely arranged in the position, corresponding to the main shaft section with the shorter axial side of the shaft shoulder, of the roller pin is installed in the annular groove, two ends of the roller pin are limited between the groove.

The loose pulley mandrel is provided with a stop structure with a D-shaped section on the left shaft neck and the right shaft neck respectively.

When the integral combined loose pulley assembly is assembled on the two lower hook frame plates of the lower hook frame device of the hand plate hoist, the left shaft neck and the right shaft neck extend into the D-shaped shaft holes matched with the two lower hook frame plates, so that the loose pulley core shaft is ensured not to rotate any more, and the rotation of the loose pulley is not influenced.

Compared with the prior art, the method has the advantages that:

the utility model discloses split type configuration structure has been abandoned to whole combination formula loose pulley subassembly, and it can regard as a part, and any part of inside damages, and a whole combination formula loose pulley subassembly is changed all directly on the spot, has improved the efficiency of on-the-spot solution trouble.

The integral combined loose pulley component formed by adopting the technical scheme has the advantages that the roller pin is sealed in the closed space surrounded by the annular groove of the loose pulley, the main body section of the loose pulley mandrel and the shaft shoulder, so that dust can be prevented from entering and foreign matters can be prevented from entering, and the loose pulley can be ensured to rotate smoothly; two ends of each roller pin are restricted on the basis of the groove bottom and the shaft shoulder of the annular groove, the elastic retainer ring for fixing the shaft shoulder is additionally arranged to prevent axial movement, and when professional maintenance is carried out in a field without a hoisting task, the elastic retainer ring needs to be detached first to pull out the free wheel shaft from the free wheel.

The integral combined type loose pulley component is beneficial to the next procedure, when the loose pulley component is assembled on the lower hook frame plate of the lower hook frame device, the assembling efficiency is high, and only two shaft necks need to be inserted into a corresponding lower hook frame.

[ description of the drawings ]

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

FIG. 1 is a sectional view of the integral composite loose pulley assembly of the present invention;

FIG. 2 is a schematic half-section view of the present invention;

FIG. 3 is a front view of the loose pulley mandrel;

fig. 4 is a left side view of fig. 3.

[ detailed description ] embodiments

Referring to fig. 1, 2, 3 and 4, an integral combined loose pulley assembly for a lever hoist hook frame device is composed of a loose pulley 1, a loose pulley mandrel 2, a needle roller 3 and a circlip 4.

The loose pulley spindle 2 is a stepped shaft, and is composed of a main shaft section 20, a journal 21 (shown as a left journal), another journal 22 (shown as a right journal), and a shoulder 23, wherein the journal 21 and the another journal 22 are respectively located at two ends of the main shaft section 20, and the shoulder 23 disposed on the main shaft section 20 is closer to the another journal 22 and is far away from the one journal 21.

The loose pulley 1 is provided with a shaft hole 10 matched with the loose pulley mandrel 2, and after the loose pulley mandrel 2 passes through the shaft hole 10, a journal 21 and another journal 22 respectively extend out and are positioned at two sides of the loose pulley 1.

The loose pulley 1 is concavely provided with an annular groove 11 for mounting the roller pin at a main shaft section position of which the shaft hole 10 is longer corresponding to one axial side (shown as the left side of the shaft shoulder) of the shaft shoulder 23, the loose pulley 1 is concavely provided with a clamp spring groove 12 for mounting the elastic check ring 4 at a main shaft section position of which the shaft hole 10 is shorter corresponding to the other axial side (shown as the right side of the shaft shoulder) of the shaft shoulder 23, the roller pins 3 which are closely arranged into a whole circle are mounted in the annular groove 11, two ends of each roller pin 3 are limited between the groove bottom of the annular groove 11 and the inner side wall (shown as the left side wall) of the shaft shoulder 23, the elastic check ring 4 is mounted in the clamp spring groove 12, the elastic check ring 4 abuts against the outer side wall (shown as the right side wall) of the shaft shoulder 23, and the.

The loose pulley 1 is provided with an annular groove 11 concavely arranged on the inner wall of the shaft hole 10 of the loose pulley and a clamp spring groove 12 arranged on two sides of a shaft shoulder 23, and the clamp spring groove 12 is adjacent to the port (the right port is shown in figure 1) of the shaft hole 10.

The section of the left journal 21 is stopped in a D-shaped structure; the right journal 22 also has a D-shaped cross-section stop.

When the utility model discloses when assembling down the hook frame plate (not drawn) of hook frame device on, open left and right hook frame plate down, with the D font shaft hole of left and right hook frame plate down respectively aim at a journal, another journal add the suit can, the equipment is very simple, high-efficient.

Claims (2)

1. The utility model provides a hook frame device is with whole combination formula loose pulley subassembly under lever block, includes loose pulley, loose pulley dabber and kingpin, its characterized in that: the loose pulley mandrel consists of a main shaft section, a journal and another journal which are respectively positioned at two ends of the main shaft section, and a shaft shoulder which is arranged on the main shaft section and is adjacent to the other journal,

the loose pulley is provided with a shaft hole matched with a loose pulley mandrel, the loose pulley mandrel penetrates through the shaft hole, a shaft neck and the other shaft neck to respectively extend out and be positioned at two sides of the loose pulley, the loose pulley is concavely provided with an annular groove for mounting a roller pin at the position of the shaft hole corresponding to the longer main shaft section at one axial side of the shaft shoulder, the loose pulley is concavely provided with a clamp spring groove for mounting an elastic check ring at the position of the shaft hole corresponding to the shorter main shaft section at the other axial side of the shaft shoulder, the roller pin is mounted in the annular groove, two ends of the roller pin are limited between the groove bottom of the annular groove and the shaft shoulder, and the elastic check ring is mounted in the clamp spring groove.

2. The integrated combined type loose pulley component for the lever hoist lower hook frame device according to claim 1, wherein: the loose pulley mandrel is provided with stop structures with D-shaped sections on the left shaft neck and the right shaft neck respectively.

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