CN2301301Y

CN2301301Y - Screw setting and loosening machine

Info

Publication number: CN2301301Y
Application number: CN 97239468
Authority: CN
Inventors: 王文会
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-23
Filing date: 1997-04-23
Publication date: 1998-12-23
Anticipated expiration: 2007-04-23

Abstract

The utility model relates to a screw assembling and disassembling machine. A planetary gear (14) which is arranged in an intermediate body (15) is meshed with a motor shaft (12) and an inner ring gear (13) at the same time, and an impact head (10) is driven after the planetary speed reduction to make a pulling shaft (6), an output head (4) and a sleeve barrel (3) rotate. A regulation and conversion switch (2) can be rotated in a reverse mode, the tightness or the looseness of a screw can be realized, and a screw which is seriously rusted can be impacted in an intermittent mode and can get loose by the regulation and conversion switch. The screw assembling and disassembling machine is a portable electric tool and is suitable for the assembly and the disassembly of tyres of an automobile and a tractor. The screw assembling and disassembling machine can be widely used for the installation and the maintenance of equipment of a railway industry, a bridge industry, an electric industry, a metallurgy industry, a petroleum industry, a chemical industry, etc.

Description

Screw setting and loosening machine

The utility model relates to a kind of Screw setting and loosening machine, belongs to the electric tool that screws or unscrew screw.

In equipment installation or maintenance process, screwing or unscrew screw is very usual thing.Yet, want to unscrew like a cork but not a duck soup for the overtorquing or the dead screw that becomes rusty.Especially for the tire dismantling of automobile, tractor, because of its screw diameter is bigger, that twists is too tight, will be with great strength very during with shfting wrench or box spanner dismounting, and the length that also will add a sleeve pipe sometimes and increase its arm of force is carried out.Some tensions of twisting or the dead screw that seriously becomes rusty are also wanted to beat just and can achieve the goal with the tup shake while twisting.Use traditional shfting wrench or box spanner to take people's effort, big, the inefficiency of labour intensity.In addition the equipment of industries such as building, oil, chemical industry, railway, bridge, geology, metallurgy, electric power install and maintenance process in also be like this.

The purpose of this utility model is for overcoming the deficiency described in the background technology, and a kind of portable electric Screw setting and loosening machine is provided.

The technical solution of realization above-mentioned purpose is: the planetary gear in the intermediate meshes with motor shaft and ring gear respectively, and spindle jacket has compression spring and impacts head, and the spanner on the axle is pulled in the gap driving on the impact head.Being provided with the chevron-notch of embedded steel ball at the impact head and the joint of main shaft. intermediate and main shaft are connected as a single entity, and planetary gear is installed in the cavity of intermediate, and intermediate is positioned at ring gear again.Jacket casing is connected on the delivery of pulling axle.

Fig. 1: structural representation of the present utility model.

Fig. 2: intermediate structure schematic diagram.

Fig. 3: the respective outer side edges schematic diagram of ring gear, intermediate, planetary gear and motor shaft.

Fig. 4: impact head and pull axle construction and cooperate figure.

Now in conjunction with the accompanying drawings the utility model is done an explanation.

As shown in Figure 1, this changer has a housing 17, motor 16, intermediate 15, ring gear 13, planetary gear 14, main shaft 19, impact 10, compression spring 11, steel ball 8 and chevron-notch 9 all are contained in the housing 17, middle part and end at housing 17 respectively are provided with one handle 1,18, and change-over switch 2 is connected with motor 16 by lead.Wherein, ring gear 13 is fixed between intermediate 15 and housing 17 inwalls, and planetary gear 14 symmetries are installed in the cavity of intermediate 15, and the tooth bar on each planetary gear 14 and ring gear 13 and the motor shaft 12 meshes (referring to Fig. 3) simultaneously.Main shaft 19 is solidified as a whole with intermediate 15, also is provided with chevron-notch 9 on main shaft 19, and steel ball 8 is embedded in the chevron-notch 9 (referring to Fig. 2).Impacting 10 is a hollow cylinder body structure, is arranged with two gap 20 in a upper edge of impacting 10.Pull axle and be arranged with two spanners 7 on 6, this spanner 7 is positioned at and impacts a gap 20 of 10, pulls the top of axle 6 and establishes a delivery 4 that cooperates with sleeve 3.Said delivery 4, pull the axle 6 and spanner 7 be one (referring to Fig. 4), pull the axle 6 and housing 17 between be provided with sliding bearing 5.

For the ease of operation, on housing 17, reach shell end and respectively be provided with one handle 1 and 18, change-over switch 2 is fixed near the handle 1, in order that can change the direction of rotation of motor 16 at any time by change-over switch 2.

When the dismounting screw, the sleeve 3 that internal diameter is identical with the nut diameter is enclosed within on the delivery 4 of pulling axle 6 earlier, and cover screw, pressing change-over switch 2 makes motor 16 rotations mesh simultaneously with motor shaft 12 and ring gear 13 because of the planetary gear 14 that is positioned at intermediate 15, so motor shaft 12 drives planetary gear 14 and rotates and transferring power around ring gear 13, and form a moderating process, also increased moment of torsion.Simultaneously, intermediate 15 is also thereupon by the rotational speed after slowing down.Since on the intermediate 15 chevron-notch 9 and steel ball 8 with impact 10, the structural relation of compression spring 11, when intermediate 15 rotates, impact 10 an also rotation thereupon, drive spanners 7 and even pull axle 6 and delivery 4 rotations by the gap 20 that impacts 10 upper edge, thereby screw is unscrewed by sleeve 3 with delivery 4 sockets.When screw too tightly even seriously becomes rusty when dead, during with this machine dismounting big resistance can appear, at this moment, steel ball 8 slides in chevron-notch 9, impact 10 under the effect of steel ball 8, make and impact 10 gap 20 places and spanner 7 is produced to be interrupted fast impact shake and beat, till screw is got loose.

If need screw screw the time, only need to regulate change-over switch 2, motor 16 will backward rotation, thereby drives planetary gear 14 until delivery 3 equal antiports, can reach the purpose that tightens the screw.

The utility model has overcome in the present dismounting larger diameter screw process that effort is time-consuming, labour intensity big, the worker Do that efficient is low to be waited not enoughly, can realize easily to the screwing or unscrewing of screw, especially to too tightly or serious upper The dead screw that becomes rusty can also be interrupted impact, until screw is got loose. That these facility have is convenient and practical, at any time carry, Simple to operate, time saving and energy saving advantage. Use this machine can reduce labour intensity, can increase work efficiency again, Be applicable to the tyre dismounting of automobile, tractor and railway, bridge, metallurgy, electric power, geology, oil, change The equipment of the industry such as worker, building is installed and maintenance is used.

Claims

1. Screw setting and loosening machine, motor (16) is loaded in the housing (17), change-over switch (2) is contained on the housing (17), but it also has the sleeve (3) of a socket, lever (1,18) is fixing with housing (17), it is characterized in that the planetary gear (14) in the intermediate (15) meshes with motor shaft (12) and ring gear (13) respectively, main shaft (19) is outer to be with compression spring (11) and to impact head (10), drives the spanner of pulling on the axle (6) (7) by a gap (20) that impacts on (10).

2. changer as claimed in claim 1 is characterized in that impacting the chevron-notch (9) that the joint of head (10) with main shaft (19) is provided with embedded steel ball (8).

3. changer as claimed in claim 1 is characterized in that intermediate (15) and main shaft (19) are connected as a single entity, and planetary gear (14) is installed in the cavity of intermediate (15), and intermediate (15) is positioned at ring gear (13) again.

4. changer as claimed in claim 1 is characterized in that sleeve (3) is socketed on the delivery (4) of pulling axle (6).