CN100351166C

CN100351166C - Light aluminium alloy chain block

Info

Publication number: CN100351166C
Application number: CNB200510060484XA
Authority: CN
Inventors: 邱以刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-25
Filing date: 2005-08-25
Publication date: 2007-11-28
Anticipated expiration: 2025-08-25
Also published as: CN1740082A

Abstract

The present invention discloses a portable aluminium alloy wrench block which comprises a main body mechanism, a ratchet wrench mechanism and a driven chain wheel mechanism which are matched and connected, wherein the main body mechanism comprises a main body casing and a main body cover plate which is screwed with the lower part of the main body casing, upper hooks are matched and connected with the upper part of the main body casing, an anti-reverse gear driving device and a chain wheel driving device are arranged in the main body casing, the opening positions of the two hooks are provided with clamping and locking board assemblies to prevent chains from sliding outwards, and a ratchet handle assembly in the ratchet wrench mechanism is matched and connected with a gear shaft. The present invention has simple and compact structure, light weight, reverse prevention, flexible, easy use and applicable high-altitude operation, and can lighten labor burdens when people climb a rod and a tower; labor and time are saved in the course of the operation of the present invention, and thereby, the work efficiency is increased.

Description

Light aluminium alloy chain block

Technical field

The present invention relates to field of mechanical manufacture technology, particularly light aluminium alloy chain block is applied to lifting or stringing usefulness, is specially adapted to the aloft work field.

Background technology

At present, the Lever Blocks of domestic production, be based on steel, iron material, and the chain that uses all is common chain, diameter is all between 6mm～10mm, use the comparison heaviness, particularly when aloft work, heavy instrument does not still all reach desirable effect in operation undoubtedly on work efficiency.The applying date is that " Lever Blocks " (notification number is CN2637460Y) of the Chinese utility model patent ZL03230717.9 on April 23rd, 2003 just belongs to this kind, it is connected by the coexist commutation ratchet engaged of sprocket wheel axle head of shell, sprocket shaft, sprocket wheel, Handleset, brake assemblies, commutation ratchet, sprocket shaft still is an one with sprocket wheel, and the sprocket wheel axle head connects left and right steel bushing.Can't solve but use the heavy problem of comparison, especially can not be suitable for the needs of aloft work.

According to the present national conditions of China, rapid development of economy must relate to the fast development such as matching constructions such as electric power, telecommunications, how to increase work efficiency, and is present our subject matter to be solved.

Summary of the invention

Technical matters to be solved by this invention is at above-mentioned deficiency, provides a kind of simple and compact for structure, in light weight, and anti-the reverse used the light aluminium alloy chain block of light and handy flexibly suitable aloft work.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: light aluminium alloy chain block comprises matched main body mechanism, free wrench mechanism and driven sprocket mechanism; Main body mechanism comprises main body cover and is screwed onto the main body cover plate of main body cover bottom that hook connects on main body cover top; The gear system of the built-in anti-reverse of main body cover and sprocket transmission device, the opening of hook and following suspension hook is equipped with the Carcel board component that prevents that chain from taking off outward; Ratchet handle assembly in the free wrench mechanism connects gear wheel shaft; Gear system comprises by gear wheel shaft and round washer and outer-hexagonal nut are equipped and forms and be positioned at the main body cover internal upper part; Sprocket transmission device comprises by sprocket spindle and big gear wheel, head sprocket, packing ring, retaining nut and retaining nut pin are equipped and forms and be positioned at the main body cover bottom; The technical measures of taking comprise: free wrench mechanism also comprises handwheel, handwheel is equipped mutually with the ratchet handle assembly through two socket head cap screws, the ratchet handle assembly is through matched handle clavula wheel connection gear axle, the little ratchet of handle disposes and controls, clockwise moving ratchet, and is assemblied on the gear wheel shaft that stretches out outside the main body cover; Be fitted with front friction plate and back friction lining before and after the large ratchet respectively, front friction plate is equipped mutually with anti-lock rubber ring, and back friction lining is equipped mutually with friction wheel, and is positioned at the main body cover internal upper part; Friction wheel, back friction lining, large ratchet, front friction plate, anti-lock rubber ring, friction disc, the little ratchet of handle, ratchet cover plate, trig loop, the handwheel order is equipped mutually and all cover be fitted in and constitute the integral body of string dress mutually on the gear wheel shaft.

For optimizing technique scheme, the measure of being taked also comprises:

Driven sprocket mechanism comprises the sprocket wheel housing, is provided with equipped mutually sprocket shaft and driven sprocket in the sprocket wheel housing, and the driven sprocket endoporus is equipped with needle bearing; The work chain places between sprocket wheel and the driven sprocket; Following suspension hook and copper sheathing and hook nut are connected the below in the sprocket wheel housing; The sprocket wheel cap is fixed on the upper end of sprocket wheel housing with socket bolt, and sprocket housing covers and has cross chain cylindrical void, and the work chain cunning that is positioned at the sprocket wheel housing fits on the driven sprocket wheel track.

Chain skids off the disengagement head sprocket when preventing work, is provided with stage clip and chain baffle plate between head sprocket and the big gear wheel, guarantees the normal operation of head sprocket and driven sprocket mechanism.

For improving driving efficiency, the head sprocket endoporus is equipped with needle bearing.

Produce when preventing that the large ratchet forward and backward revolution is moving and reverse, large ratchet also disposes and anti-ly reverses ratchet, thereby has guaranteed reliability during operation and safety; The little ratchet of handle on the ratchet handle assembly is connected with two spring pins with friction disc.

For preventing the terminal landing of chain, work chain end also disposes the anticreep loop device.

For making gear wheel shaft can work and don't influence rotational efficiency and resistance to abrasion under no oil condition, the main body cover one end endoporus of mounting teeth wheel shaft is equipped with composite bearing, and other end endoporus is equipped with another composite bearing.

For preventing that chain from taking off outward, the Carcel board component is the button of insuring of hinged hook, reaches the hinged following safety catch of suspension hook down.

Compared with prior art, the present invention is by gear system and sprocket transmission device in the built-in anti-reverse of main body cover, and the opening of hook and following suspension hook is equipped with the Carcel board component that prevents that chain from taking off outward; Ratchet handle assembly in the free wrench mechanism connects gear wheel shaft.Its high strength aluminum alloy main body, the high-strength alloy steel link chain, it is simple and compact for structure, and is in light weight, and anti-the reverse used flexibly lightly, is suitable for aloft work.Step on bar, the burden that can lighten one's labor when stepping on tower, more can be laborsaving in the use, economize merit, thus improved work efficiency.

Description of drawings

Fig. 1 is an agent structure cross-sectional schematic of the present invention;

Fig. 2 is a ratchet handle assembled scheme drawing among Fig. 1;

Fig. 3 is the whole equipped scheme drawing of the present invention;

Fig. 4 is a driven sprocket mechanism cross-sectional schematic among Fig. 3;

Fig. 5 is each parts blast view among Fig. 3.

The specific embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

Structure of the present invention sees that Fig. 1 is to shown in Figure 5.Light aluminium alloy chain block comprises matched main body mechanism, free wrench mechanism and driven sprocket mechanism; Main body mechanism comprises main body cover 19 and is screwed onto the main body cover plate 35 of main body cover 19 bottoms through socket

head cap screw

29 and 36 that hook 1 connects on main body cover 19 tops through outer-hexagonal nut 21 and copper sheathing 20; The gear system and the sprocket transmission device of main body cover 19 built-in anti-reverses, the opening of two suspension hooks are equipped with the Carcel board component that prevents that chain from taking off outward; Ratchet handle assembly 9 in the free wrench mechanism connects gear wheel shaft 17.

Gear system comprises by gear wheel shaft 17 and round washer 22 and outer-hexagonal nut 23 are equipped and forms and be positioned at main body cover 19 internal upper parts; Sprocket transmission device comprises by sprocket spindle 27 and big gear wheel 34, head sprocket 32, packing ring 48, retaining nut 49 and retaining nut pin 50 are equipped and forms and be positioned at main body cover 19 bottoms.Throwing off head sprocket 32 for preventing that work chain 37 from skidding off, be equipped with stage clip 30 and chain baffle plate 31 between head sprocket and the big gear wheel, guarantee the normal operation of head sprocket 32 and driven sprocket mechanism, is to improve driving efficiency, and head sprocket 32 endoporus are equipped with needle bearing 33.

Main body mechanism drives work by free wrench mechanism, free wrench mechanism also comprises handwheel 4, handwheel 4 is equipped mutually with ratchet handle assembly 9 through two socket head cap screws 3, ratchet handle assembly 9 is taken turns 7 connection gear axles 17 through matched handle clavula, handle clavula wheel 7 disposes and controls, clockwise moving ratchet 7a, and is assemblied on the gear wheel shaft 17 that stretches out outside the main body cover 19; Large ratchet 13 front and back are fitted with front friction plate 12 and back friction lining 14 respectively, and front friction plate 12 is equipped mutually with anti-lock rubber ring 11, and back friction lining 14 is equipped mutually with friction wheel 15, and is positioned at main body cover 19 internal upper parts; Friction wheel 15, back friction lining 14, large ratchet 13, front friction plate 12, anti-lock rubber ring 11, friction disc 10,

Handle clavula wheel 7, ratchet cover plate 6, trig loop 5, handwheel 4 orders are equipped mutually and all cover be fitted in and constitute the integral body of string dress mutually on the gear wheel shaft 17.Produce when preventing that large ratchet 13 forward and backward revolutions are moving and reverse, large ratchet 13 also disposes and anti-ly reverses ratchet 25, thereby has guaranteed reliability during operation and safety; Handle clavula on ratchet handle assembly wheel 7 is connected with two spring pins 8 of friction disc 10 usefulness.For making gear wheel shaft can work and don't influence rotational efficiency and resistance to abrasion under no oil condition, the main body cover 19 1 end endoporus of mounting teeth wheel shaft 17 are equipped with composite bearing 15a, and other end endoporus is equipped with another composite bearing 15b.

Driven sprocket mechanism comprises sprocket wheel housing 44, is provided with equipped mutually sprocket shaft 43 and driven sprocket 41 in the sprocket wheel housing 44, and the driven sprocket endoporus is equipped with needle bearing 42; Work chain 37 places between head sprocket 32 and the driven sprocket 41; Following suspension hook 46 and copper sheathing 45 and hook nut are connected the below in the sprocket wheel housing 44; Sprocket wheel cap 40 usefulness socket bolts 39 are fixed on the upper end of sprocket wheel housing 44, have cross chain cylindrical void on the sprocket wheel cap 40, be positioned at work chain 37 sliding the fitting on driven sprocket 41 wheel tracks of sprocket wheel housing 44, slide arbitrarily so that work chain 37 is free on driven sprocket 41 wheel tracks, accept the work that lifting is finished in control.For preventing the 37 terminal landings of work chain, work chain 37 ends also dispose anticreep loop device 38.For preventing that the outer of work chain 37 from taking off, the Carcel board component is the button 2 of insuring of hinged hook 1, and the hinged following safety catch 47 of suspension hook 46 down.

The present invention specifically is work like this:

At first in lifting or tighten up selected place of when operation, suspension hook 1 is fixed in a bit, to be positioned to fall on the ratchet handle assembly 9 and open along ratchet 7a, it is thrown off in handle clavula wheel 7 be in neutral position, simultaneously anti-reverse ratchet 25 on the agent structure is opened, and it is broken away from and the contacting of large ratchet 13, and rotate handwheel 4 driven gear axles 17 then, rotate big gear wheel 34 and head sprocket 32 again; This moment friction disc 10, anti-lock rubber ring 11, front friction plate 12, back friction lining 14, and friction wheel 15 all be in off working state.The length of adjusting work chain 37 thus shortens suspension hook 46 and is played weight or tighten up a little distance, and suspension hook 46 is hung on this object.

After dead work finishes, close earlier and prevent reversing ratchet 25 and large ratchet 13 interlocks, adjust falling on the ratchet handle assembly 9 and take turns 7 interlocks along ratchet 7a and handle clavula, cw shakes ratchet handle assembly 9 combines closely friction disc 10, anti-lock rubber ring 11, front friction plate 12, back friction lining 14 and friction wheel 15 and large ratchet 13, and turbine is in running order this moment.Cw shakes ratchet handle assembly 9 and takes turns 7 driven gear axles 17 along ratchet 7a transmission handle clavula, transmission big gear wheel again 34 and head sprocket 13 are in interlocking pattern, front friction plate 12, back friction lining 14 are started working, and weight puts in place or the work of tightening up arrives claimed condition position and fixing up to being risen.Forbid opening anti-reverse ratchet 25 in the work.

Behind the above-mentioned end-of-job, open anti-reverse ratchet 25, adjust falling on the ratchet handle assembly 9 along ratchet 7a, rotating counterclockwise ratchet handle assembly 9 makes friction disc 10, anti-lock rubber ring 11, front friction plate 12, back friction lining 14 throw off with friction wheel 15 and large ratchet 13, rotate handwheel 4 again, the length of adjusting work chain 37 is taken out suspension hook 26, end-of-job.

Though the present invention illustrates and describes by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.

Claims

1, light aluminium alloy chain block comprises matched main body mechanism, free wrench mechanism and driven sprocket mechanism; Main body mechanism comprises main body cover (19) and is screwed onto the main body cover plate (35) of main body cover (19) bottom that hook (1) connects on main body cover (19) top; The gear system and the sprocket transmission device of the built-in anti-reverse of described main body cover (19), the opening of hook and following suspension hook is equipped with the Carcel board component that prevents that chain from taking off outward; Ratchet handle assembly (9) in the described free wrench mechanism connects gear wheel shaft (17); Described gear system comprises being equipped with by gear wheel shaft (17) and round washer (22) and outer-hexagonal nut (23) and forms and be positioned at main body cover (19) internal upper part; Described sprocket transmission device comprises by sprocket spindle (27) and big gear wheel (34), head sprocket (32), packing ring (48), retaining nut (49) and retaining nut pin (50) are equipped and forms and be positioned at main body cover (19) bottom; It is characterized in that: described free wrench mechanism also comprises handwheel (4), handwheel (4) is equipped mutually with ratchet handle assembly (9) through two socket head cap screws (3), ratchet handle assembly (9) connects described gear wheel shaft (17) through the little ratchet of matched handle (7), the little ratchet of handle (7) disposes and controls, clockwise moving ratchet (7a), and is assemblied on the described gear wheel shaft (17) that stretches out outside the described main body cover (19); Be fitted with front friction plate (12) and back friction lining (14) before and after the large ratchet (13) respectively, front friction plate (12) is equipped mutually with anti-lock rubber ring (11), and back friction lining (14) is equipped mutually with friction wheel (15), and is positioned at described main body cover (19) internal upper part; Friction wheel (15), back friction lining (14), large ratchet (13), front friction plate (12), anti-lock rubber ring (11), friction disc (10), the little ratchet of handle (7), ratchet cover plate (6), trig loop (5), handwheel (4) order is equipped mutually and all cover be fitted in gear wheel shaft (17) and go up and constitute the integral body of string dress mutually.

2, light aluminium alloy chain block according to claim 1, it is characterized in that: described driven sprocket mechanism comprises sprocket wheel housing (44), be provided with equipped mutually sprocket shaft (43) and driven sprocket (41) in the sprocket wheel housing (44), the driven sprocket endoporus is equipped with needle bearing (42); Work chain (37) places between head sprocket (32) and the driven sprocket (41); Following suspension hook (46) is connected the interior below of sprocket wheel housing (44) with copper sheathing (45) and hook nut; Sprocket wheel cap (40) is fixed on the upper end of sprocket wheel housing (44) with socket bolt (39), has cross chain cylindrical void on the sprocket wheel cap (40), and the work chain (37) that is positioned at sprocket wheel housing (44) is sliding to be fitted on driven sprocket (41) wheel track.

3, light aluminium alloy chain block according to claim 1 is characterized in that: be provided with stage clip (30) and chain baffle plate (31) between described head sprocket (32) and the big gear wheel (34).

4, light aluminium alloy chain block according to claim 1 is characterized in that: described head sprocket (32) endoporus is equipped with needle bearing (33).

5, light aluminium alloy chain block according to claim 1, it is characterized in that: described large ratchet (13) also disposes the anti-ratchet (25) that reverses, and the little ratchet of handle (7) on the described ratchet handle assembly is connected with two spring pins (8) with friction disc (10).

6, light aluminium alloy chain block according to claim 2 is characterized in that: described work chain (37) end also disposes anticreep loop device (38).

7, light aluminium alloy chain block according to claim 2 is characterized in that: described main body cover (19) the one end endoporus of described gear wheel shaft (17) are equipped with composite bearing (15a), and other end endoporus is equipped with another composite bearing (15b).

8, light aluminium alloy chain block according to claim 2 is characterized in that: described Carcel board component is the button (2) of insuring of hinged hook (1), reaches the hinged described following safety catch (47) of suspension hook (46) down.