CN2224107Y

CN2224107Y - Device for mounting-dismounting screw of automobile tyre

Info

Publication number: CN2224107Y
Application number: CN 95212716
Authority: CN
Inventors: 欧阳申春
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-05-18
Filing date: 1995-05-18
Publication date: 1996-04-10
Anticipated expiration: 2005-05-18

Abstract

The utility model discloses a device for mounting and dismounting screws of automobile tyres and is a specific tool used for mounting and dismounting the screws on the steel rings of the automobile tyres and the tractor tyres. The utility model is provided with a center frame and a connecting sleeve which bears and connects a sleeve wrench. The screws are tweaked by the connecting sleeve through the turn of a capstan. A sleeve rod can not be pressed downwards to generate the frictional resistance. The force of tweaking screws is saved. One side of the top of the forward and reverse interlocking adjusting screws positioned on the capstan is a straight face, and the other side is a diagonal face. The fluted disc on the connecting sleeve is gored and turned together with the straight face. The fluted disc on the connecting sleeve is contacted and glide with the diagonal face to form zero return stroke. The speed of tweaking screws is high. The twisting direction can be exchanged through the adjustment of the forward and reverse interlocking adjusting screws. The connecting sleeve and the center frame are assembled by adopting bearings or axle sleeves. The utility model can be taken out to store when is not used. The carrying is convenient.

Description

Motor tire screw replacer

The utility model is a kind of special tool that is used to dismantle and install the screw on automobile, the tractor tire steel ring.

Existing automobile, tractor tire dismounting use the sleeve-type spanner to turn round screw usually, because wheel contact silt, dust, the butter fouling on the screw also has rust, often is difficult to twisting, needs to adopt boosting-rod, sometimes even tramp with one's feet.Socket wrench is turned round screw except that producing torsional forces, also has a power that presses down, and makes between screw and the screw rod mutually not, produces friction drag.Socket wrench does not have the backlash journey in addition, when turning round screw, needs repeatedly conversion sleeve or boosting-rod orientation, inefficiency.

Now also have a kind of power dismantling devices, be used as power, drive bonded assembly sleeve work on the negative pulley wheel axle by belt by electrical motor.This power dismantling devices torque magnitude be difficult for to be grasped, and cost height, volume be big, carry inconvenience, can not be as driver's tool.

The purpose of this utility model is to make a kind of central pivot point that has, and the forward and reverse interlocking of energy, and the manual dynamic torque tool of free backhaul is arranged.

The utility model adopts on two movable footrests [13], and supporting is by two anchor plates [12], [8] fixing two poles [11].Center frame [16] has been installed on two poles [11], and fixing by lock screw [9].Inner ring at center frame [16] is equipped with a bearing [23].Have one with capstan winch [2] bonded assembly can sleeved [4] the adapter sleeve [15] of band fluted disc be inserted in the bearing [23] of center frame [16], can extract out when not using and deposit.Capstan winch [2] has been gone up device hand assembly [18] and boosting-rod iron cover.The fluted disc of coupling sleeve [15] is withstood by forward and reverse interlocking governing screw [7], and simultaneously for facing directly, one side is the inclined-plane on the top of governing screw [7].Face directly when withstanding fluted disc, coupling sleeve [15] rotates with capstan winch [2]; The one side of inclined-plane contact, teeth are skidded, and capstan winch [2] rotates, and coupling sleeve [15] is motionless, forms the backlash journey.When 180 ° of directions of interlocking governing screw [7] conversion, face directly and the inclined-plane on top exchange, coupling sleeve [15] rotation direction and the conversion of backlash journey direction.

The utility model adopts center frame [16] supporting coupling sleeve [15] to form a central pivot point, and capstan winch [2] rotates when turning round screw, because the supporting role of central pivot point, socket bar can not produce friction drag to pressing down, and it is laborsaving to have only torsional moment to turn round screw.Capstan winch [2] is gone up the rotating mutual interlocking gear that is provided with can make coupling sleeve [15] rotate to cw or anticlockwise direction, slides to other direction, and it is fast to turn round screw speed.Coupling sleeve [15] adopts the bearing assembling with center frame [16], can take out when not using and deposit, and is easy to carry.

Utilize embodiment shown in the drawings to be described further below:

Fig. 1 is the main diagrammatic sketch of motor tire screw replacer

Fig. 2 is the A-A cutaway view of motor tire screw replacer

Fig. 3 is the B-B cutaway view of motor tire screw replacer

Motor tire screw replacer shown in Figure 1 adopts two tee T iron pipe foot rests [13], and foot rest [13] connects anchor plate [12] by latch [1], can be movable.Fixed two poles [11] on anchor plate [12], wherein right pole has an oblique positioning groove.Two poles [11] have been gone up a suit center frame [16], suit position [3] are that circular gap cooperates, can slide up and down, and fixing by lock screw [9], lock screw [9] has been gone up device pin [10], so that twisting.Anchor plate [8] on two poles [11] is fixed by screw.

The inner ring of the center frame [16] of motor tire replacer shown in Figure 2 is equipped with a bearing [23], also can adorn axle sleeve, and bearing [23] is fixing by ring washer [20].Have the coupling sleeve [15] of a band fluted disc to be inserted in the bearing [23], the front end of coupling sleeve [15] has two pin holes and latch [14], can attaching sleeve [4].There is a capstan winch [2] rear end of coupling sleeve [15], and capstan winch [2] has been gone up attaching boosting-rod iron cover has put attaching hand assembly [18] at boosting-rod iron, and hand assembly [18] is outer little iron cover [17].The fluted disc of the last rear end of coupling sleeve [15] blocks back-up ring [21] by snap ring [12] and is fixed on the capstan winch [2].

Fluted disc [15] on the coupling sleeve of motor tire replacer shown in Figure 3 is withstood by forward and reverse interlocking governing screw [7], and governing screw is blocked spring [19] by door [5], withstands fluted disc.A straight trough is arranged on the door of governing screw [5], and pin door bolt [6] is stuck in the groove, convertible 180 ° of directions location.Governing screw [7] is withstood the top of fluted disc and is simultaneously faced directly, and one side is the inclined-plane, faces directly when withstanding fluted disc, and capstan winch [2] drives coupling sleeve [15] and rotates together, and the inclined-plane slidably forms capstan winch [2] backlash journey.

Claims

1, a kind of motor tire screw replacer mainly is made up of coupling sleeve, capstan winch, joystick, boosting-rod iron cover and forward and reverse interlocking governing screw of pole, center frame, band fluted disc, it is characterized in that the coupling sleeve with fluted disc passes through the bearing supporting of center frame.

2, motor tire screw replacer according to claim 1, the top that it is characterized in that the forward and reverse interlocking governing screw on the capstan winch is simultaneously for facing directly, and one side is the inclined-plane.