CN2522405Y

CN2522405Y - Chain block

Info

Publication number: CN2522405Y
Application number: CN 02218745
Authority: CN
Inventors: 赵金凯; 赵华兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-01
Filing date: 2002-02-01
Publication date: 2002-11-27
Anticipated expiration: 2012-02-01

Abstract

The utility model discloses a ring chain block for jack-up, it includes the wallboard, take the tooth major axis, hand sprocket, jack-up sprocket, the chain, the splined hole gear, the minor axis, the piece gear, the ratchet, the pawl, friction disc and brake seat, take the tooth major axis, minor axis and jack-up sprocket all support on the wallboard, take the one end and the hand sprocket threaded connection of tooth major axis, the middle part cover is in jack-up sprocket, the other end has the major axis tooth with piece gear engagement, the piece gear links firmly on the minor axis, the minor axis is epaxial minor axis tooth and splined hole gear engagement, the splined hole of splined hole gear and the spline fit on the jack-up sprocket, brake seat links firmly on taking the tooth major axis, take the major axis tooth inner end on the tooth major axis to be equipped with the circular bead, the circular. The utility model discloses compact structure, simple to operate can keep size precision unanimous.

Description

Chain hoist

Technical field

The utility model relates to a kind of manual lifting gear.

Background technology

Chain block in the market generally all has band tooth major axis, for example Chinese patent CN2232911Y discloses a kind of like this structure, because band tooth major axis has adopted straight structure, this just requires the splined section length on the chain hoist wheel longer, so that refill ring washer after loading onto the splined hole gear, prevent splined hole gear end float misalignment.This structure has following shortcoming: chain hoist wheel upper spline part is owing to will adorn back-up ring and extend and make structure compactness inadequately; Back-up ring is installed is made the fitting work trouble; The tooth portion of band tooth major axis relies on machining of metals, thereby dimensional accuracy is difficult to be consistent.

Summary of the invention

The chain hoist that the purpose of this utility model is to provide a kind of compact conformation, tooth portion accurate to dimension easy to assembly and band tooth major axis to be easy to be consistent.

In order to achieve the above object, the utility model is by the following technical solutions: a kind of chain hoist, comprise wallboard, band tooth major axis, the bangle wheel, chain hoist wheel, chain, the splined hole gear, the minor axis tooth, minor axis, plate gear, ratchet, ratchet, friction lining and drg seat, band tooth major axis, minor axis and chain hoist wheel all are bearing on the wallboard, one end of band tooth major axis is threaded with the bangle wheel, the middle part is enclosed within the chain hoist wheel, the other end has and plate gear ingear major axis tooth, plate gear is connected on the minor axis, minor axis tooth on the minor axis and splined hole gear mesh, the splined hole of splined hole gear and the spline fitted on the chain hoist wheel, the drg seat is connected on the band tooth major axis, major axis tooth inner end on the band tooth major axis is provided with shoulder, and pad is equipped with in the shoulder inner end.

After adopting said structure, because the major axis tooth inner end on band tooth major axis is provided with shoulder, pad is equipped with in the shoulder inner end, block chain hoist wheel and splined hole gear with this shoulder and pad, the length of chain hoist wheel is reduced, the also corresponding minimizing of length of band tooth major axis, make compact conformation, be convenient to processing; Owing to cancelled the installation back-up ring, make fitting work more convenient, quick again; In addition, band tooth major axis can adopt the job operation of extrusion forming, thereby the accurate to dimension of its tooth portion is easy to be consistent owing to increased shoulder in this structure.

Description of drawings

Fig. 1 is the structural representation of chain hoist of the present utility model;

Fig. 2 is the cutaway view of Fig. 1 along the A-A line;

Fig. 3 is the cutaway view of Fig. 1 along the B-B line.

The specific embodiment

The embodiment that provides below in conjunction with accompanying drawing is described in further detail the utility model.

As shown in Figure 1, chain hoist of the present utility model, comprise wallboard 4, band tooth major axis 14, bangle wheel 1, chain hoist wheel 15, chain 2 and 7, splined hole gear 13, minor axis tooth 8, minor axis 12, plate gear 9, ratchet 22, ratchet 3, friction lining 21 and drg seat 20, band tooth major axis 14, minor axis 12 and chain hoist wheel 15 all are bearing on the wallboard 4, one end of band tooth major axis 14 is threaded with bangle wheel 1, the middle part is enclosed within the chain hoist wheel 15, the other end has and plate gear 9 ingear major axis tooth 14-1, plate gear 9 is connected on the minor axis 12, minor axis tooth 8 on the minor axis 12 and 13 engagements of splined hole gear, the splined hole 13-1 of splined hole gear 13 and the spline fitted on the chain hoist wheel 15, drg seat 20 is connected on the band tooth major axis 14, major axis tooth 14-1 inner end on the band tooth major axis 14 is provided with shoulder 14-2, and shoulder 14-2 is equipped with pad 10 in the inner end.

Wallboard 4 is divided into left and right wallboard 4-1,4-2, and chain hoist wheel 15 is bearing on left and right wallboard 4-1, the 4-2 by bearing 19, also has suspension hook axle 5 and strut bar 17 to be contained on left and right wallboard 4-1, the 4-2.The left end of left side wallboard 4-1 is equipped with bangle cover 18, and the right-hand member of right wallboard 4-2 is equipped with Side fascia 4-3.Minor axis 12 is bearing on right wallboard 4-2 and the Side fascia 4-3 by bearing 11.Drg seat 20 is threaded with band tooth major axis 14.Between bangle wheel 1 and the ratchet 22 and between ratchet 22 and the drg seat 20 friction lining 21 is housed.

As shown in Figure 1, 2, in order to make chain 7 guiding more steady, the top that is positioned at chain hoist wheel 15 on the wallboard 4 is equipped with and is led carrier bar 6, specifically is installed between left and right wallboard 4-1, the 4-2, and leading carrier bar 6 is that the cross section is the arc of " Ω " shape.Branch carrier bar 16 is housed on the wallboard below the chain hoist wheel 15 4.

As shown in Figure 3, more reliable in order to make deceleration and stopping performance, be equipped with on the wallboard 4 two with ratchet 22 ingear ratchets 3.Can certainly only establish a ratchet 3.

During the utility model work, as shown in Figure 1, pulling bangle bar 2, driving bangle wheel 1 rotates, thereby friction lining 21, ratchet 22, drg seat 20 and band tooth major axis 14 are rotated synchronously, and then major axis tooth 14-1 and plate gear 9 engagements are rotated, the minor axis 12 that is connected with plate gear 9 rotates immediately, because minor axis tooth 8 rotates, also mesh rotation with minor axis tooth 8 ingear splined hole gears 13, splined hole gear 13 drives chain hoist wheel 15 by splined hole 13-1 and rotates, thereby makes chain 7 upper and lower moving, and rises or falls weight.

Claims

1, a kind of chain hoist, comprise wallboard (4), band tooth major axis (14), bangle wheel (1), chain hoist wheel (15), chain (2 and 7), splined hole gear (13), minor axis tooth (8), minor axis (12), plate gear (9), ratchet (22), ratchet (3), friction lining (21) and drg seat (20), band tooth major axis (14), minor axis (12) and chain hoist wheel (15) all are bearing on the wallboard (4), one end of band tooth major axis (14) is threaded with bangle wheel (1), the middle part is enclosed within the chain hoist wheel (15), the other end has and plate gear (9) ingear major axis tooth (14-1), plate gear (9) is connected on the minor axis (12), minor axis tooth (8) on the minor axis (12) and splined hole gear (13) engagement, spline fitted on the splined hole (13-1) of splined hole gear (13) and the chain hoist wheel (15), drg seat (20) is connected on the band tooth major axis (14), it is characterized in that: major axis tooth (14-1) inner end on the band tooth major axis (14) is provided with shoulder (14-2), and pad (10) is equipped with in shoulder (14-2) inner end.

2, chain hoist according to claim 1 is characterized in that: the top that is positioned at chain hoist wheel (15) on the wallboard (4) is equipped with and is led carrier bar (6).

3, chain hoist according to claim 2 is characterized in that: leading carrier bar (6) is that the cross section is the arc of " Ω " shape.

4, according to claim 1 or 2 or 3 described chain hoists, it is characterized in that: be equipped with on the wallboard (4) two with ratchet (22) ingear ratchet (3).