CN201211663Y

CN201211663Y - Worm screw type pressure wrench

Info

Publication number: CN201211663Y
Application number: CNU2008200133802U
Authority: CN
Inventors: 印文广
Original assignee: REFRACTORY MATERIAL CO OF ANGANG STEEL GROUP
Current assignee: REFRACTORY MATERIAL CO OF ANGANG STEEL GROUP
Priority date: 2008-06-05
Filing date: 2008-06-05
Publication date: 2009-03-25
Anticipated expiration: 2018-06-05

Abstract

The utility model relates to a wrench, in particular to a worm screw type pressure wrench. The technical problem to be solved by the utility model is to provide the worm screw type pressure wrench, namely to provide a manual, electric or hydraulic drive wrench with high efficiency, portability and large torque. The worm screw type pressure wrench comprises a shell (1), a worm wheel (2), a bolt sleeve (3), bearings (4), nuts (5) and a worm screw (6), wherein the end face of the worm wheel (2) is respectively contacted with the shell (1), the outer ring of the bolt sleeve (3) and the inner hole of the worm wheel (2) by a concave-convex annular groove way, and both ends of the worm screw (6) are respectively provided with the bearings (4) to be locked by the nuts (5) to be fixed on the shell (1). The cardinal principle of the utility model is as follows: the characteristic of the worm wheel and the worm screw which have large rotational speed ratio is utilized to increase the torque of the wrench, and a larger torque can be formed on the worm wheel by only exerting very little strength on the end of the worm screw. The utility model has convenient use and high efficiency and is convenient for popularization.

Description

Worm type pressurization spanner

Technical field

The utility model relates to a kind of spanner, relates in particular to a kind of Worm type pressurization spanner.

Background technology

At present, existing all kinds of general utility wrenches have three types, and a kind of is traditional to increase moment of torsion with lever principle, handle is long more, and torque is big more, often runs into the problem of Bolt dismantling difficulty in real work, its reason is that the bolt surrounding space that is disassembled is little, big spanner moves not open, and small wrench unloads motionless again, when particularly loading and unloading bigger bolt, need be with adding methods such as sleeve pipe or hammering spanner handle, just can reach enough pretightning forces,, just restrict these methods because the bolt surrounding space is little; Second kind is the pressurization spanner, for example, the patent No. is 98200836.8 reinforcement spanner, it is to utilize the mode of multi-stage gear transmission to reach reinforcement effect, because spanner will be with a speed-changing gear box, weight and volume is bigger, is not suitable for carrying, also be subjected to be loaded and unloaded the bolt surrounding space and limit, be fit to automobile and use; The third is an electric wrench, and present electric wrench only is suitable for workshop or FX and uses because motor weight is big, can not carry, also be not suitable for carrying, and the electric wrench of dismounting king-bolt needs to be subject to field condition and to limit with suspender uses of slinging with car.

The utility model content

In order to overcome above-mentioned defective, technical problem to be solved in the utility model is to provide a kind of Worm type pressurization spanner, and a kind of manual, electronic or spanner that surges of efficient, light, high pulling torque promptly is provided.

The technical solution of the utility model is: this Worm type pressurization spanner, comprise housing, worm gear, bolt sleeve, bearing, nut, worm screw, wherein, the end face of worm gear contacts with concavo-convex cannelure form respectively with the worm gear endoporus with housing, bolt sleeve outer ring, the worm screw two ends are furnished with bearing respectively, and, be fixed on the housing by nut check.

The square shaft of worm screw two ends output can with handle or motor or hydraulic motor be connected, when using by manual handle or the rotation of driven by motor worm shaft, and rotate by worm screw drive worm gear and bolt sleeve, thus the loading and unloading of realization bolt.

Cardinal principle of the present utility model is the big characteristics of speed ratio of utilizing worm gear, worm screw to rotate, increase the torque of spanner, apply very little power at the worm screw end, just can on worm gear, form than high pulling torque, only need short handle or an a kind of low power motor or a hydraulic motor, just can finish and reach the pretension effect of bolt, alleviate the volume and weight of electric wrench greatly; Because the rotation direction of worm and wheel is vertical, thereby reduce the restriction of space length, really realized the possibility of hand electric high pulling torque spanner.Be easy to use, efficiently, be convenient to promote.

Description of drawings

Fig. 1 is the installation diagram of the utility model Worm type pressurization spanner;

Fig. 2 is the worm gear schematic diagram of Worm type pressurization spanner;

Fig. 3 is the bolt sleeve schematic diagram of Worm type pressurization spanner.

Wherein, the 1st, housing, the 2nd, worm gear, the 3rd, bolt sleeve, the 4th, bearing, the 5th, nut, the 6th, worm screw.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described further:

As Fig. 1, Fig. 2, shown in Figure 3:

The utility model Worm type pressurization spanner comprises housing 1, worm gear 2, bolt sleeve 3, bearing 4, nut 5, worm screw 6, wherein, housing 1 is used for fixing worm gear 2, worm screw 6 relative positions, the end face of worm gear 2 contacts with concavo-convex cannelure form with housing 1, thereby make between worm gear 2 and the shell radially relative static, circumferentially can relatively rotate, bolt sleeve 3 outer rings cooperate to form radially with circumferentially with six tongue and grooves with worm gear 2 endoporus locatees, worm screw 6 two ends are furnished with bearing 4 respectively, and, be fixed on the housing 1 by nut 5 lockings.

The square shaft of worm screw 6 two ends output can with handle or motor or hydraulic motor be connected, when using by manual handle or the rotation of driven by motor worm shaft, and rotate by worm screw 6 drive worm gears 2, thus the loading and unloading of realization bolt.

Bolt sleeve 3 has plurality of specifications, and the external diameter of each specification bolt sleeve 3 is identical, and interior six sides of bolt sleeve 3 are corresponding with the bolt size, interchangeable, matches with worm gear 2 inner rings.Join corresponding bolts cover 3 by the bolt size.

Claims

1, a kind of Worm type pressurization spanner, it is characterized in that: comprise housing (1), worm gear (2), bolt sleeve (3), bearing (4), nut (5), worm screw (6), wherein, the end face of worm gear (2) contacts with concavo-convex cannelure form respectively with worm gear (2) endoporus with housing (1), bolt sleeve (3) outer ring, worm screw (6) two ends are furnished with bearing (4) respectively, and by nut (5) locking, are fixed on the housing (1).

2, Worm type pressurization spanner according to claim 1, it is characterized in that: described bolt sleeve (3) has plurality of specifications, and interior six sides are corresponding with the bolt size.