CN2790687Y

CN2790687Y - Wrench core

Info

Publication number: CN2790687Y
Application number: CN 200520011760
Authority: CN
Inventors: 许新国
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-12
Filing date: 2005-04-12
Publication date: 2006-06-28
Anticipated expiration: 2015-04-12

Abstract

The utility model discloses a plate machine core, which comprises a friction drum, a hammer body and a crotch shaft, wherein one end of the crotch shaft is provided with a cylindrical rod, and after passing through a center hole of the hammer body, the cylindrical rod is inserted into an inner center hole of the friction drum so that the cylindrical rod, the hammer body and the friction drum can be coaxially in sliding fit and can rotate. The hammer body is provided with a centrifugal block at the side next to the friction drum, and the centrifugal block impacts a friction block in the friction drum on the inner wall of the friction drum under the action of a preloading spring, wherein the centrifugal block is jointed with the friction block. The hammer body is provided with a transmission striking and poking block and an elastic device for controlling the restoration thereof, wherein the transmission striking and poking block can be in contact with and separated from the crotch shaft. No mater what a frequent process of quick action and blocking stops is generated by the hammer body and the crotch shaft of the utility model, the friction drum can not generate a phenomenon of complete blocking stops all the time, only a transitory differential process is generated, therefore a power system can not be affected and damaged. The outward lifting end of the striking and poking block has optimal collision trajectories and larger flying and touching space, therefore the probability of failure collision is lowered, the plate machine core has much higher durability and the exorbitant performance requirements for power source equipment are lowered.

Description

A kind of plate movement

Technical field

The utility model relates to a kind of plate movement that is formulated on the motor board dismounting filature.

Background technology

At present, most of plate movements are all by motor direct-drive, and the plate movement often is in the variable condition of quick-action, stall in the running, so motor is short service life, the fault rate height.Also there is the fastness of employing to come the plate movement of transmission, but this plate movement all is arranged on motive power one side to centrifugal, so just be difficult to accurately set its friction volume, crossing impact block that conference causes hammer body bumping the back that finishes and " kills " with very fast wing axle of rotating hitting, being difficult to get rid of ditch resets, otherwise if area is too small, then transmission speed is slow, influences operating efficiency.In addition, the piece that hits on the existing plate movement all inwardly touches wing axle, and it is little to fly to bump the space, and collision frequency is many, causes plate movement short, inefficiency in service life.

The utility model content

At the deficiencies in the prior art, the purpose of this utility model is to provide a kind of energy effective collision transmission, fault rate is low and the plate movement of easy manufacturing adjustment.

For achieving the above object, the utility model plate movement comprises friction drum, hammer body and crotch axle, crotch axle one end is a cylindrical bar, this cylindrical bar passes the heart hole of inserting friction drum behind the centre bore of hammer body, the three can coaxial cunning joins and rotates, the side that hammer body and friction drum are adjacent is provided with centrifugal, this centrifugal under the effect of preloading spring with friction drum in the brake pad involutory with it be pressed on the inwall of friction drum, hammer body is provided with and can bumps the transmission that connects, breaks away from the crotch axle and hit shifting block and control the elastic device that it resets.

Further, described centrifugal is hung and the hammer body side by pin.

Further, described centrifugal is a plurality of, can be two, is suspended on the hammer body side symmetrically, and preloading spring is arranged between two centrifugal, under the effect of preloading spring each centrifugal the brake pad involutory with it be pressed on the inwall of friction drum.

Further, described centrifugal is a plurality of, can be four, is suspended on the hammer body side symmetrically, is provided with preloading spring between corresponding two centrifugal, under the effect of preloading spring each centrifugal the brake pad involutory with it be pressed on the inwall of friction drum.

Further, offer axial notch on the outer surface of described hammer body, hit shifting block one end and be installed in rotation in this groove, hammer body when rotation, hit the other end of shifting block and can outwards raise out bifurcation end face interference with the crotch axle around its bearing pin by bearing pin.

Further, the described bearing pin end that hits shifting block promptly hits the center of rotation of shifting block near hammer body and the corresponding side of friction drum, so that hit the collision end of shifting block and the interference of crotch axle bifurcation end face the maximum outer radius of raising is arranged.

Further, the described shifting block that hits is strip, and its bearing pin is arranged on the nearly maximum gauge place of hammer body.

Further, the described shifting block that hits has bent angle, and its bearing pin is arranged on the bent angle end.

Further, described elastic device comprises back-moving spring and raises hook, offer longitudinal fluting on the hammer body perpendicular to above-mentioned axial notch, one side of axial notch is connected with longitudinal fluting, raise hook one end and be installed in by bearing pin on the sidewall of longitudinal fluting, hook-shaped end under the effect of spring with axial notch in the shifting block that hits compress mutually.

Further, the described cheicers of raising hook is the obtuse angle, when hitting shifting block and raise state outside being in, raises the effect that is hooked in back-moving spring and compresses mutually with hitting shifting block all the time, makes it have the trend of resetting.

Further, the described hook of raising is the inclined-plane with hitting the side that shifting block compresses.

Further, described longitudinal fluting is promptly raised hook and is suppressed in hitting shifting block near the bearing pin place vertically near the center of rotation of hitting shifting block, hits and offers and raise the draw-in groove that hook matches on the shifting block.

Friction drum of the present utility model is arranged on power source one side, centrifugal is arranged on the hammer body, the friction volume can accurately be set as required, no matter how frequent quick-action take place in hammer body and crotch axle, the stifled process of stopping, friction drum can not produce stifled fully phenomenon of stopping all the time, of short duration differential process only takes place, can not influence, damage dynamical system, because the turning cylinder that hits shifting block is arranged on the nearly maximum gauge place of hammer body, therefore hitting outer the raising of shifting block holds collision track and bigger flying with the best to bump the space, reduced the collision probability that lost efficacy, made the plate movement more durable, also reduced the too high requirement of power source equipment performance.

Description of drawings

Fig. 1 is the overall schematic of the utility model plate movement;

Cross-sectional schematic when Fig. 2 remains static for the utility model plate movement;

Cross-sectional schematic when Fig. 3 hits the state of dialling for the utility model plate movement is in;

Fig. 4 is the A-A view of Fig. 2;

Fig. 5 is the B-B view of Fig. 2;

Fig. 6 is the C-C view of Fig. 3;

Fig. 7 hits the outer relatively schematic diagram of track of raising of shifting block for difformity.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

As Fig. 1, Fig. 2, shown in Figure 4, the plate movement is mainly by friction drum 1, hammer body 5 and crotch axle 9 are formed, one end of crotch axle 9 is a cylindrical bar, this cylindrical bar passes the heart hole of inserting friction drum 1 behind the centre bore of hammer body 5, the three can coaxial cunning joins and rotates, hammer body 5 and friction drum 1 are hung with centrifugal 3 by pin on the adjacent side, have four for centrifugal 3, be suspended on the hammer body side symmetrically, be provided with preloading spring 11 between corresponding two centrifugal, be pressed on the inwall of friction drum 1 at the brake pad 2 that each centrifugal will be involutory with it under the effect of preloading spring 11, its pressing power is variable, be that brake pad 2 is by centrifugal 3 bracketing, under the effect of spring pressure, friction drum 1 drives hammer body 5 by the frictional force between brake pad 2 and centrifugal 3 and rotates during starting, originally moving for wiping, increase along with rotating speed, centrifugal 3 centrifugal force also constantly increases, expand more and plead the inwall that brake pad 2 is close to friction drum 1, thereby between the inwall of friction drum 1 and the brake pad 2, frictional force between brake pad 2 and centrifugal 3 also constantly increases, and finally reaches best, stable linkage status.

As Fig. 2, Fig. 3, Fig. 5, shown in Figure 6, offer axial notch 12 on the outer surface of hammer body 5, hit shifting block 7 and be strip, one end has bending part, L-shaped, its end is installed in rotation in the axial notch 12 by the bearing pin 6 of bending part, during hammer body 5 rotations, hit the other end of shifting block 7 and can outwards raise out bifurcation end face 13 interferences with crotch axle 9, thereby bump and drive its rotation around bearing pin 6.As shown in Figure 7, hit the different sizes that directly determined terminal collision space of shifting block shape and hinge installation site, the outer effect of raising of hitting shifting block 72 among Fig. 7 (b) obviously will be better than and be hit shifting block 71 among Fig. 7 (a), therefore hit the bearing pin end of shifting block 7 in the present embodiment near hammer body 5 and the corresponding side of friction drum, and the maximum gauge place of close hammer body 5, promptly near the outer surface of hammer body 5, so that hit the collision end of shifting block 7 maximum outer radius and the best interference track raised arranged, increase flies to bump the space.Offer the longitudinal fluting 13 of groove 12 perpendicular to axial direction on the locus on the hammer body 5, one side of axial notch 12 is connected with longitudinal fluting 13, an end of raising hook 8 is installed on the sidewall of longitudinal fluting 13 by bearing pin 14, its hook-shaped end under the effect of return spring 10 with axial notch 12 in the shifting block 7 that hits compress mutually, its cheicers is the obtuse angle, with hitting the side that shifting block 7 compresses is the inclined-plane, when hitting shifting block 7 and raise state outside being in, raise hook 8 the effect of back-moving spring 10 all the time with hit shifting block 7 and compress mutually, make it have the trend of resetting, longitudinal fluting 13 is promptly raised hook 8 and is suppressed in hitting shifting block 7 near bearing pin 6 places vertically near the center of rotation of hitting shifting block 7.

After hammer body 5 obtains rated speed, raising hook 8 overcomes the pressure of return spring 10 and raises outward, promptly loosen hitting the compacting of shifting block 7, hit outer then the raising of the enough centrifugal force of shifting block 7 acquisitions, and with bifurcation end face 13 collision of crotch one side, obtaining transmission of power after the speed to the working end, when the stifled stopping time of working end, raise hook 8 and push back original position hitting shifting block 7 rapidly, hammer body 5 continues speed-raising next time again, raise hook, hit the process of dialling, if power source does not have stall, then the plate movement will carry out said process repeatedly, no matter but how frequent quick-action take place in hammer body 5 and crotch axle 9, stifled stopping can not produce stifled fully phenomenon of stopping all the time, of short duration differential process only takes place, and can not constitute a threat to motive power system.

When hammer body 5 rotations, when hitting the work dead point of raising collision crotch axle 9 outside the shifting block 7, promptly produce stall, hang centrifugal 3 and then stifled simultaneously stopping with hammer body 5 sides thereupon, centrifugal force disappears, and big many of the elastic force of the elasticity rate spring 11 of the return spring 10 on the hammer body 5, therefore, the frictional force that spring 11 provides is not enough again so that hit shifting block 7 and kill with the crotch face, and it is reliable to hit the shifting block return.

Claims

1, a kind of plate movement, comprise friction drum, hammer body and crotch axle, crotch axle one end is a cylindrical bar, this cylindrical bar passes the heart hole of inserting friction drum behind the centre bore of hammer body, the three can coaxial cunning joins and rotates, it is characterized in that, the side that hammer body and friction drum are adjacent is provided with centrifugal, this centrifugal under the effect of preloading spring with friction drum in the brake pad involutory with it be pressed on the inwall of friction drum, hammer body is provided with and can bumps the transmission that connects, breaks away from the crotch axle and hit shifting block and control the elastic device that it resets.

2, plate movement as claimed in claim 1 is characterized in that, described centrifugal is hung and the hammer body side by pin.

3, plate movement as claimed in claim 2 is characterized in that, described centrifugal is a plurality of, can be two, be suspended on the hammer body side symmetrically, preloading spring is arranged between two centrifugal, under the effect of preloading spring each centrifugal the brake pad involutory with it be pressed on the inwall of friction drum.

4,, plate movement as claimed in claim 2, it is characterized in that, described centrifugal is a plurality of, can be four, be suspended on the hammer body side symmetrically, be provided with preloading spring between corresponding two centrifugal, under the effect of preloading spring each centrifugal the brake pad involutory with it be pressed on the inwall of friction drum.

5, plate movement as claimed in claim 1, it is characterized in that, offer axial notch on the outer surface of described hammer body, hit shifting block one end and be installed in rotation in this groove by bearing pin, hammer body when rotation, hit the other end of shifting block and can outwards raise out bifurcation end face interference with the crotch axle around its bearing pin.

6, plate movement as claimed in claim 1 is characterized in that, the described bearing pin end that hits shifting block promptly hits the center of rotation of shifting block near hammer body and the corresponding side of friction drum, and the maximum gauge place of close hammer body.

7, plate movement as claimed in claim 1 is characterized in that, the described shifting block that hits is strip, has outside bending part, and its bearing pin is arranged on bending part.

8, plate movement as claimed in claim 1, it is characterized in that, described elastic device comprises back-moving spring and raises hook, offer longitudinal fluting on the hammer body perpendicular to above-mentioned axial notch, one side of axial notch is connected with longitudinal fluting, raise hook one end and be installed in by bearing pin on the sidewall of longitudinal fluting, hook-shaped end under the effect of spring with axial notch in the shifting block that hits compress mutually.

9, plate movement as claimed in claim 8 is characterized in that, the described cheicers of raising hook is the obtuse angle, it is the inclined-plane with hitting the side that shifting block compresses, when hitting shifting block and raise state outside being in, raise the effect that is hooked in back-moving spring and compress mutually with hitting shifting block all the time, make it have the trend of resetting.

10, plate movement as claimed in claim 8 is characterized in that, described longitudinal fluting is promptly raised hook and suppressed in hitting shifting block near the bearing pin place vertically near the center of rotation of hitting shifting block, hits and offers and raise the draw-in groove that hook matches on the shifting block.