CN2470068Y

CN2470068Y - Impact device for pneumatic impact wrench

Info

Publication number: CN2470068Y
Application number: CN 01218605
Authority: CN
Inventors: 王林秀足
Original assignee: Xuhong Pneumatic Co ltd
Current assignee: Xuhong Pneumatic Co ltd
Priority date: 2001-03-28
Filing date: 2001-03-28
Publication date: 2002-01-09
Anticipated expiration: 2011-03-28

Abstract

The utility model provides an impact device of pneumatic impact wrench, contain a transmission shaft and a rotation barrel that registrate each other, an elastic element who locates between this transmission shaft and this rotation barrel, an hammering block and a confession this transmission shaft that registrate in this transmission shaft front end, this rotation barrel, the sleeve of this elastic element and this hammering block holding, the effect that the strength that utilizes the revolving force of transmission shaft and elastic element to be released after being compressed can add improves torsion and drives rotation barrel and strike hammering block in the twinkling of an eye, and then inseparable locking or loose the screwed part of unloading, in order to utilize less power of exerting oneself, and reach higher torque output.

Description

The percussion mechanism of Pneumatic impact spanner

The utility model relates to a kind of Pneumatic immpacting device, particularly a kind of percussion mechanism of Pneumatic impact spanner.

Now in general factory or all kinds of maintenance center, can see a kind of aerodynamic energy that is produced with electrodynamic pump compressed air, again this aerodynamic energy is converted to the Pneumatic impact spanner of mechanical energy, and with the Pneumatic impact spanner as lock, unload the instrument of all kinds of spiro connecting pieces, but still have following disappearance in the use and have to be solved:

Because existing vapour, truck engineering repair works, the large-sized often bolt when maintenance, primarily faced and the lock of nut, unload work, and will lock, unload all kinds of spiro connecting pieces, just need the Pneumatic impact spanner of high torsion just to be enough to finish, yet these common Pneumatic impact spanner, the torsion that it provided still has slightly dislikes not enough situation, therefore general Pneumatic impact spanner is in order to produce enough torsion, just need use more powerful electrodynamic pump to come compressed air to produce enough torsion, but, the volume of Pneumatic impact spanner also can be along with becoming big thus, moreover, along with the idea of energy savings is day by day popularized, use more powerful electrodynamic pump not only to buy the higher also effective energy savings of price, the burden that more increases electric power and make the operation costs rising.

The purpose of this utility model be to provide a kind of lock can increase the torsion of output during spiro connecting piece so that the percussion mechanism of the Pneumatic impact spanner of the spiro connecting piece that can more closely lock.

In order to achieve the above object, the utility model provides a kind of percussion mechanism of Pneumatic impact spanner, the power transmission shaft and the rotating cylinder that comprise mutual fit, one is located at the flexible member between this power transmission shaft and this rotating cylinder, one is sleeved on the anvil piece and of this power transmission shaft front end for this power transmission shaft, this rotating cylinder, this flexible member and the ccontaining sleeve of this anvil piece, it is characterized in that: this power transmission shaft, its rear end is provided with an annulus that protrudes, one press face is the leading edge that is positioned at this annulus, nearly power transmission shaft front end two sides are provided with a mutual corresponding groove, this groove is to be provided with a corresponding mutually ball, and this groove is that summit and two times summits on one are arranged;

This rotating cylinder has an accommodation space and forward and backward two ends are provided with an opening, these rotating cylinder front end end face two sides respectively are convexly equipped with a projection, and this power transmission shaft is to be sleeved in the accommodation space of this rotating cylinder, this power transmission shaft front end is the front opening that protrudes in this rotating cylinder, this accommodation space front end is that face is ended on a top in addition, and the groove that this rotating cylinder inwall is provided with on groove and this power transmission shaft is combined to form a scroll space for ccontaining ball mutually;

This flexible member is an elastomeric objects, and this flexible member is that end between face on the top that is sheathed on the accommodation space of the press face of this power transmission shaft and this rotating cylinder;

This anvil piece, its front end fastening means device, rear end two sides are provided with a mutually corresponding lug, and are provided with an opening in the rear end end face, this opening be sleeved on the power transmission shaft front end and with the mutual joining of the projection of rotating cylinder;

This sleeve has a room and forward and backward two ends are provided with an opening, and this anvil piece front end is the front opening that protrudes in sleeve, ccontaining this power transmission shaft, this flexible member, this rotating cylinder, this anvil piece in this room.

The percussion mechanism of described Pneumatic impact spanner is characterized in that: the annulus of this power transmission shaft, its face are provided with most and are parallel to the gear that install in its axle center, and this annulus is provided with most corresponding edge holes for this gear installing.

The percussion mechanism of described Pneumatic impact spanner is characterized in that: this flexible member can be a spiral compression spring.

The percussion mechanism of the utility model Pneumatic impact spanner, the power transmission shaft and the rotating cylinder that comprise mutual fit, one is located at the flexible member between this power transmission shaft and this rotating cylinder, one is sleeved on the anvil piece and of this power transmission shaft front end for this power transmission shaft, this rotating cylinder, this flexible member and the ccontaining sleeve of this anvil piece, this power transmission shaft is one to have the element that transmits kinetic energy, its rear end is provided with an annulus that protrudes, one press face is the leading edge that is positioned at this annulus, nearly power transmission shaft front end two sides are provided with a mutual corresponding groove, this groove is to be provided with a corresponding mutually ball, and this groove is that summit and two times summits on one are arranged, this rotating cylinder has an accommodation space and preceding, back two ends are provided with an opening, these rotating cylinder front end end face two sides respectively are convexly equipped with a projection, and its accommodation space of this rotating cylinder is and the power transmission shaft fit, this power transmission shaft front end is the front opening that protrudes in rotating cylinder behind the fit, this accommodation space front end is that face is ended on a top in addition, and the groove that this rotating cylinder inwall is provided with on a groove and the power transmission shaft is combined to form a scroll space mutually, roll for ball provided thereon, this flexible member is one to have the elastomeric objects that absorbs kinetic energy, this flexible member is that end between face on its top of accommodation space that is sheathed on the press face of power transmission shaft and rotating cylinder, this its front end of anvil piece is in order to the fastening means device, rear end two sides are provided with a mutual corresponding lug and are provided with an opening in the rear end end face, this opening be sleeved on the power transmission shaft front end and with the mutual joining of the projection of rotating cylinder, this sleeve has a room and preceding, back two ends are provided with an opening, this anvil piece front end is the front opening that protrudes in sleeve, and this room is in order to ccontaining power transmission shaft, flexible member, rotating cylinder, the anvil piece.

Be elaborated below by most preferred embodiment and accompanying drawing percussion mechanism to Pneumatic impact spanner of the present utility model, in the accompanying drawing:

Fig. 1 is the three-dimensional exploded view of the utility model one preferred embodiment.

Fig. 2 is the axial combination section of the above-mentioned preferred embodiment of the utility model.

Fig. 3 is the radially combination section of the above-mentioned preferred embodiment of the utility model.

Fig. 4 is another axial combination section of the above-mentioned preferred embodiment of the utility model.

Fig. 5 is another combination section radially of the above-mentioned preferred embodiment of the utility model.

Please cooperate and consult shown in Figure 1ly, a preferred embodiment of the percussion mechanism of Pneumatic impact spanner of the present utility model is to comprise: a power transmission shaft 10, a rotating cylinder 20, a flexible member 30, an anvil piece 40 and a sleeve 50.

This power transmission shaft 10, its rear end is provided with the three-dimensional annulus 11 of a hollow of protruding, one press face 12 is the leading edges that are positioned at this annulus 11, and this annulus 11 which is provided with most the gears 111 that are parallel to its axle center, and these annulus 11 its faces are provided with most corresponding edge holes 112 and can be fixed in for this majority gear 111 pins, it is one corresponding and generally be reverse V-shaped groove 13 that near in addition power transmission shaft 10 front ends two sides are provided with, this groove 13 is respectively to be provided with a corresponding mutually ball 131 on it, and this groove 13 is that summit 132 and two times summits 133 on one are arranged.

This rotating cylinder 20, it has an accommodation space 21 and preceding, back two ends are provided with an opening, these rotating cylinder 20 front end end faces two sides respectively are convexly equipped with a projection 22, and these rotating cylinder 20 its accommodation spaces 21 are and power transmission shaft 10 fits, these power transmission shaft 10 front ends are the front opening places that protrude in rotating cylinder 20 behind the fit, these accommodation space 21 front ends are that face 211 is ended on a top in addition, and these rotating cylinder 20 inwalls are provided with V-shaped without exception groove 23, this groove 23 also is combined to form a scroll space 231 mutually with groove 13 on the power transmission shaft 10, and this scroll space 231 can be rolled in it for ball 131.

This flexible member 30 is one to have the elastomeric objects (elastomeric objects is to be the compression spring) that absorbs kinetic energy in present embodiment, and this flexible member 30 is to be sheathed on the press face 12 of

power transmission shaft

10 and 211 in face is ended on the top of rotating cylinder 20.

This anvil piece 40, it is in order to the fastening means device that its front end is a rectangle, ora terminalis two sides in rear end are provided with a mutually corresponding lug 41 and are provided with an opening in the rear end end face, and this opening is sleeved on power transmission shaft 10 front ends and makes the projection 22 mutual joinings of lug 41 and rotating cylinder 20.

This sleeve 50, it has a room 51 and forward and backward two ends are provided with an opening, and these anvil piece 40 front ends are the front openings that protrude in sleeve 50, and this room 51 is in order to ccontaining power transmission shaft 10, rotating cylinder 20, flexible member 30, anvil piece 40.

The overall structure of utilizing above-mentioned member to form, when kinetic energy passes to most gears 111 on power transmission shaft 10 annulus 11, and then drive press face 12 is rotated forward, because flexible member 30 is to be positioned at only 211 in face of press face 12 and top, add that flexible member 30 itself has a crushing resistance, therefore rotate forward when press face 12 and just directly drive flexible member 30 and rotating cylinder 20 fast rotational forward can't compression elastic element 30 time, see also Fig. 2, shown in 3, this moment, ball 131 was the last summits 132 that are arranged in the scroll space 231 that the groove 23 by the groove 13 of power transmission shaft 10 and rotating cylinder 20 synthesized, then drive lug 41 rotations of anvil piece 40 by the projection 22 of rotating cylinder 20, so and then drive the tool device locking screw fitting (bolt for example forward that is positioned at anvil piece 40 its front ends, nut or the like), after spiro connecting piece has been threaded to certain tightness, this moment is because the torsion deficiency, and make press face 12 can't rotate gradually forward as quick drive flexible member as above-mentioned 30 and rotating cylinder 20, at this moment press face 12 original strength of rotating are transferred beginning compression elastic element 30, and be positioned at the ball 131 on the last summit 132 of scroll space 231 simultaneously, just synchronously along with the distance of press face 12 compression elastic elements 30 is down rolled on summit 133, and rotating cylinder 20 is moved backward, and then make script drive also synchronous backward the moving of projection 22 that lug 41 revolves forward, see also Fig. 4, shown in 5, just be rolled into following summit 133 in a flash at ball 131, projection 22 just separates with lug 41 simultaneously, flexible member 30 just can restore to the original state immediately after this separation, and this ball 131 that is positioned at scroll space 231 simultaneously is rolled into summit 132 by following summit 133 immediately, kinetic energy that flexible member 30 discharges because of being compressed and press face 12 drive originally, the two strength addition, make projection 22 bigger in the impulsive force of moment impact lug 41, and then the torsion of raising anvil piece 40, continue forward locking screw fitting (bolt for example and drive the tool device be positioned at anvil piece 40 its front ends, nut or the like), so go round and begin again, can reach the purpose of tightr interlocking spiro connecting piece with the tool device of anvil piece 40 front ends, opposite, when the desire pine is unloaded spiro connecting piece, then need only transmit reverse power and give power transmission shaft 10.

Therefore, the utility model mainly is the kinetic energy that discharges because of being compressed by flexible member 30 and the drive of press face 12, and the two strength addition makes projection 22 bigger in the impulsive force of moment impact lug 41, makes its outputting torsion increase.

Via above explanation, can again advantage of the present utility model be summarized as follows:

The utility model utilizes the ball 131 of power transmission shaft 10 to cooperate with the rolling of 20 of rotating cylinders, add the instant impact that kinetic energy changed into that flexible member 30 discharges, and then the maximum output benefit of performance, adding transmission process of the present utility model all operates with roll mode, so energy performance rate is the highest, and the ball 131 of power transmission shaft 10 cooperates with the rolling of 20 of rotating cylinders, the axostylus axostyle formula rolling of taking than existing impact wrench cooperates wear away low, the utility model not only increases service life because of low abrasion thus, also increase torsion because of low abrasion, also make the electricity consumption consumption rate descend because of low abrasion, more, low abrasion can use with existing electrodynamic pump equipment collocation because of making, the torsion of output is increased, and the more powerful electrodynamic pump of must not spending to change, can say at one stroke and several.

Claims

1. the percussion mechanism of a Pneumatic impact spanner, comprise a power transmission shaft of mutual fit and a rotating cylinder, and be located at anvil piece and that the flexible member, between this power transmission shaft and this rotating cylinder is sleeved on this power transmission shaft front end, it is characterized in that for this power transmission shaft, this rotating cylinder, this flexible member and the ccontaining sleeve of this anvil piece:

This power transmission shaft, its rear end are provided with an annulus that protrudes, and a press face is the leading edge that is positioned at this annulus, and nearly power transmission shaft front end two sides are provided with a mutual corresponding groove, and this groove is to be provided with a corresponding mutually ball, and this groove is that summit and two times summits on one are arranged;

2. the percussion mechanism of Pneumatic impact spanner as claimed in claim 1 is characterized in that: the annulus of this power transmission shaft, its face are provided with most and are parallel to the gear that install in its axle center, and this annulus is provided with most corresponding edge holes for this gear installing.

3. the percussion mechanism of Pneumatic impact spanner as claimed in claim 1 is characterized in that: this flexible member is a spiral compression spring.