CN2696773Y - Force boosted mechanical spanner - Google Patents

Abstract

The utility model discloses a force boosted mechanical spanner, comprising a sleeve barrel, a gear speed variator, and a crank. The crank is installed on the axle head of the input end of the gear speed variator, and the gears of the input end are engaged with two big gears. Two pinion gears mounted on the common axle with the two big gears are engaged with a big gear of the output end. The sleeve barrel axle is fixed to the axle head of the big gear of the output end. The utility model adopts the principle of gear graduation, and changes the higher speed of the power end into a lower speed of the load side through gear transmission, in order to enlarge the torque by decreasing the speed. In this way, the crank can be rotated quickly with a small force, and therefore the load side can generate large rotating torque to screw a tight nut. Any nut can be disassembled by using only 10kg force. The utility model is safe to use and convenient to carry, and is in particular suitable for automobile repairman.

Description

Afterburning mechanical wrench

One, technical field

The utility model belongs to installation, repair outfit, is specifically related to the spanner that a kind of remanufactured-vehicle business is used.

Two, background technology

The spanner that remanufactured-vehicle business is commonly used has box spanner, double offset ring spanner, back-up wrench and monkey wrench etc. at present, and these spanners respectively have its different usable condition.It is light and handy nimble and so on that double offset ring spanner and monkey wrench, back-up wrench all belong to, and uses convenient and swiftly, but is difficult to bear gravity.Box spanner can be exerted oneself bigger comparatively speaking, and slotting crowbar hole is arranged on the bar of stock box spanner, can also plug crowbar, increases the arm of force and pulls tighter screw.But in general, it is still comparatively required great effort, and meets jack panel, and a people still unloads motionless.In addition, crowbar is heavy, carries also inconvenient.

Three, summary of the invention

The purpose of this utility model provides a kind of afterburning mechanical wrench, utilizes it, uses very little power just can pull nut and meets the requirements of elasticity.The technical solution adopted in the utility model is: afterburning mechanical wrench is made of sleeve, gear-shift mechanism and crank, crank is installed in gear-shift mechanism input spindle nose, input end gear is meshed with two gear wheels, and two pinions coaxial with two gear wheels are meshed with the output gear wheel again; Quill is fixed on output gear wheel spindle nose.

The utility model adopts the principle of gear graduation, by gear drive, by the higher speed of power end, change to the lower speed of load side, exchange the increase of moment for the reduction of speed, like this, the quick rotation crank, use very little power, will produce very big rotating torque at load side, thereby can turn tighter nut.Only just can dismantle any nut with the power of 10kg.The utility model is safe in utilization, and is easy to carry, is particularly suitable for the automobile mechanic and uses.

Four, description of drawings

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

Fig. 2 is a main body schematic diagram of the present utility model;

Fig. 3 is the crank schematic diagram.

Five, the specific embodiment

Gear-shift mechanism of the present utility model comprises two groups of gears, and first group is gear 5, gear 6, gear 9, and middle pinion 6 is meshed with the gear wheel 5 and 9 of both sides, and pinion 6 is coaxial with the square head shaft 7 of plug in crank; Second group is gear 3, gear 4 and gear 10, and middle gear wheel 3 is meshed with the pinion 4 and 10 of both sides, and gear wheel 3 is coaxial with collet head, and all there is bearing at the two ends of each gear shaft; First group gear wheel 5 and 9 is coaxial with second group pinion 4 and 10 respectively, and when square head shaft 7 put crank 8 quick rotation, pinion 6 drove gear wheels 5 and 9 and rotates, and drives gear wheel 3 again with 5 and 9 coaxial pinions 4 and 10 and rotates.The speed reducing ratio of gear-shift mechanism is 22: 1 or 35: 1.Gear wheel 3 is coaxial with socket bar 1, thereby makes sleeve can pull nut.Gear-shift mechanism and sleeve all are contained in the shell 2, are provided with claw 11 on the shell 2 on collet head next door, behind the positive nut of jacket casing, block the parts of bolt and connection thereof with claw, make the main body of spanner stable, guarantee handling safety.The utility model is convenient to carry with car, is applicable to the dismounting lug nut.

Claims (2)

1, a kind of afterburning mechanical wrench, it is characterized in that: it is made of sleeve, gear-shift mechanism and crank, crank (8) is installed in gear-shift mechanism input spindle nose, input end gear (6) is meshed with two gear wheels (5), (9), and two pinions (4), (10) coaxial with two gear wheels are meshed with output gear wheel (3) again; Quill (1) is fixed on output gear wheel (3) spindle nose.

2, afterburning mechanical wrench according to claim 1 is characterized in that: be provided with claw (11) on the shell (2) on collet head next door.

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