CN101058175A - Hydraulic torque pulse generator for torque wrench - Google Patents
Hydraulic torque pulse generator for torque wrench Download PDFInfo
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- CN101058175A CN101058175A CN 200610042711 CN200610042711A CN101058175A CN 101058175 A CN101058175 A CN 101058175A CN 200610042711 CN200610042711 CN 200610042711 CN 200610042711 A CN200610042711 A CN 200610042711A CN 101058175 A CN101058175 A CN 101058175A
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Abstract
The invention relates to a hydraulic torque pulse generator for the knob wrench, mainly made of the hydraulic cylinder, main shaft, main shaft vane and front and rear covers of the hydraulic cylinder. It makes improvements for the vane that is made of base plate D and the rolling pin b, with the D's outside top having through slot parallel to the base, and the rolling pin inserted into the through slot. It also makes improvement for the hydraulic cylinder to allow the cross section of the inner cavity close to an ellipse, four right angle corner in the vertical direction of the inner wall of the hydraulic cylinder for the short and long shafts of the ellipse and the hydraulic output adjusting device and a voltage stabilization structure on the wall of the hydraulic cylinder. Due to these improvements, it has high precision in output torque, big force value, economical in energy consumption and durable in usage.
Description
Technical field
What the present invention relates to is a kind of hydraulic torque impulse generator that can be used for torque wrench.Say the moment of torsion output that this hydraulic torque impulse generator just can the pulsing form under the drive of air motor or motor accurately.
Background technology
At present, the aerodynamic moment spanner that contains pluse torque generator is widely used.Example shown in Figure 12 is exactly one of this pluse torque spanner, the gentle motor M of its pluse torque generator Y is two main building blocks of this torque wrench H, relies on the rotary power of gas motor M to drive the moment of torsion that pluse torque generator Y just can the pulsing form and exports.As shown in figure 13, the pluse torque generator Y of this pluse torque spanner has three critical pieces, be main shaft Z, hydraulic cylinder G, blade B, inject hydraulic oil among the inner chamber Ga that in hydraulic cylinder G, forms, with be furnished with a blade insertion groove among the coaxial main shaft Z of hydraulic cylinder G cylinder, blade B is inserted in this blade insertion groove, utilize the pressure of support spring that blade B is closely contacted the formation sealing surface with the inner peripheral surface of hydraulic cylinder G, simultaneously, the inner surface of the outer circumference surface of main shaft Z and hydraulic cylinder G also can form sealing surface.By such layout, utilize gas motor M rotational pulse torque generator Y, when the sealing surface that forms between the sealing surface, hydraulic cylinder G inner peripheral surface K place and the blade B top that form between hydraulic cylinder G inner peripheral surface I place and the main shaft Z outer circumference surface J place is consistent with each other, just on main shaft Z, produced a pluse torque.
Because what the pluse torque generator of above-mentioned pluse torque spanner adopted is the sealing surface form, blade B relies on and contacts pressing with the inner peripheral surface of hydraulic cylinder G of spring, in the pluse torque generator course of work, what the inner peripheral surface of the top of blade B and hydraulic cylinder G carried out is sliding-contact, the sliding friction that is produced not only makes the inner wall abrasion of hydraulic cylinder G easily, the durability of reduction system, and the frictional heat that produces causes that easily hydraulic fluid temperature rises, make the reduction of hydraulic oil viscosity among the hydraulic cylinder G inner chamber Ga, finally cause the moment of torsion output accuracy to reduce.
Secondly, the I place of hydraulic cylinder G and the J place of main shaft Z are the camber line forms among the pluse torque generator Y that uses always.Exactly because the structure of this camber line form, when main shaft rotated the generation hydraulic impulse, this camber line gradient had the effect of slowing down to the impulsive force that produces, and makes that the power output value of torque generator is big inadequately.
They are three years old, only be provided with flow control valve T among the existing pluse torque generator Y, regulate the duty of this valve at work and will regulate the size that moment of torsion is exported, its limitation is to reach control torque output and can not other mechanism that link to each other with pluse torque generator Y be exerted an influence.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency of the prior art, a kind of new hydraulic torque impulse generator that is used for torque wrench is provided, the one, make the moment of torsion output of hydraulic torque impulse generator stable, precision is higher; The 2nd, the moment of torsion power output value of raising hydraulic torque impulse generator; The 3rd, when pluse torque generator can exert an influence to the stop controlling organization when reaching the moment of torsion of setting, make power source stop reinforcing, save the energy.
The technical scheme that realizes above-mentioned purpose is as described below:
The present invention is used for the hydraulic torque impulse generator of torque wrench, it is by main shaft, hydraulic cylinder and be inserted in two blades in the main shaft blade groove and hydraulic cylinder drive end bearing bracket and rear end cap are formed, described blade C is by substrate D and roll pin b and constitute, there is a groove that is parallel to substrate plane on the top, outer of substrate D, rolls pin b and is inserted in this groove.
As further improvement in the technical proposal be, the inner chamber vertical cross section shape approximation of hydraulic cylinder G1 is in ellipse, at the long axis of ellipse two ends along the hydraulic cylinder inwall two right angled convax edge K1 arranged vertically; There are two right angled convax edge I1s parallel with fin K1 the same side of slightly departing from minor axis at the minor axis two ends of ellipse; Two and the corresponding vertical right angled convax edge J1 in right angled convax edge I1 position are arranged on the spindle outer wall.
Further improvement as above-mentioned hydraulic cylinder G1, two through hole H1, H2 are set on the casing wall of hydraulic cylinder G1, these two through holes lay respectively at radial line two ends, cylinder body cross section and are parallel to the axis of cylinder body, be provided with again in the both sides of through hole H2 two be parallel to each other and with groove L1, the L2 of through hole H2 axis normal, through hole H1 goes up a voltage stabilizing mechanism is installed, and through hole H2 goes up a hydraulic pressure output governor motion is installed; A blind hole H3 and an oil guiding hole H4 are set on the end face of described hydraulic cylinder drive end bearing bracket, and oil guiding hole H4 passes and perpendicular to blind hole H3; A blind hole H5 and a stepped hole of being made up of H7, H8 are set on described hydraulic cylinder bonnet V, an oil guiding hole H6 is arranged between blind hole H5 and stepped hole, stepped hole is on the central axis of hydraulic cylinder bonnet V, and blind hole H5 is corresponding with Oil Guide through hole H2.
By changing blade structure, its front end is contacted with hydraulic cylinder with the form of rolling friction, not only reduced the abrasion of hydraulic cylinder, also reduced the intensification amplitude of hydraulic oil simultaneously, this just can make the moment of torsion output of hydraulic torque impulse generator that higher precision is arranged.Because the inwall of hydraulic cylinder has increased by four right angled convax edges, also be provided with two right angled convax edges on the spindle outer wall again, when impulse generator turned round, the impulsive force that it produced will increase, and therefore, the torsional forces value of output just can be improved; Again owing to be provided with voltage stabilizing mechanism and hydraulic pressure output governor motion, even and when increasing to some extent when the rising of the pressure Yin Wendu of liquid in the hydraulic cylinder, voltage stabilizing mechanism also can keep its pressure and change in very little scope, and when reaching the moment of torsion of setting, can the stop controlling organization be exerted an influence when pluse torque generator, make power source stop reinforcing, save the energy.
Description of drawings
Fig. 1 is the unitary construction schematic diagram of first embodiment of hydraulic torque impulse generator of the present invention.
Fig. 2 be among Fig. 1 blade along the cutaway view of axis.
Fig. 3 is the vertical cross section schematic diagram of hydraulic cylinder among Fig. 1.
Fig. 4 is the shaft side figure of hydraulic cylinder shown in Figure 3.
Fig. 5 is the vertical cross section schematic diagram of main shaft.
Fig. 6 is the axis view of hydraulic cylinder drive end bearing bracket among Fig. 1.
Fig. 7 is the axis view of hydraulic cylinder rear end cap among Fig. 1.
Fig. 8 is the axis view of control valve among Fig. 1.
Fig. 9 is the section situation schematic diagram of hydraulic torque impulse generator of the present invention when a duty.
Figure 10 is the second embodiment organigram of hydraulic cylinder in the hydraulic torque impulse generator of the present invention.
Figure 11 is the unitary construction schematic diagram of an application example of the present invention.
Figure 12 is a kind of pluse torque spanner schematic diagram of the prior art.
Figure 13 is the section situation schematic diagram of pluse torque generator when the different operating state among Figure 12.
The specific embodiment
The present invention is further detailed explanation below in conjunction with the embodiment shown in the Figure of description.
Hydraulic torque impulse generator shown in Figure 1 is that the whole technical schemes of the present invention combine, collect all good effects and an example all over the body as one embodiment of the present of invention.It is by main shaft Z1, Fig. 3 shown in Figure 5 or hydraulic cylinder G1 shown in Figure 10 and two blade C that are inserted in the main shaft blade groove shown in Figure 2, and hydraulic cylinder drive end bearing bracket F shown in Figure 6 and rear end cap V shown in Figure 7 form.Improvement to the main shaft blade is respectively to offer a groove on the top of original two blade B, insert in groove and roll pin b, the blade C after promptly improving is by substrate D and roll pin b and constitute, and there is a groove that is parallel to substrate plane on the top, outer of substrate D, rolling pin b is inserted in this groove, as shown in Figure 2.Such change makes blade C contact with hydraulic cylinder with the form of rolling friction, has reduced frictional heat widely, has reduced the rising of hydraulic fluid temperature, thereby can prolong the life-span of hydraulic cylinder.
Hydraulic cylinder G1 chamber vertical cross section shape approximation after the improvement is in ellipse, at the long axis of ellipse two ends along the hydraulic cylinder inwall two right angled convax edge K1 arranged vertically; At the minor axis two ends of ellipse and the same side of slightly departing from minor axis, along the hydraulic cylinder inwall two right angled convax edge I1 are vertically arranged, as shown in figure 10.And supporting with it main shaft has also been done improvement, and two right angled convax edge J1 are arranged on the spindle outer wall after the improvement, and the line of two right angled convax edge J1 is seen Fig. 5 perpendicular to blade groove.
For the performance that makes the hydraulic torque impulse generator better, on the matrix of hydraulic cylinder, increase by two through hole H1, H2, these two through holes lay respectively at radial line two ends, cylinder body cross section and are parallel to the axis of cylinder body, and be provided with again in the both sides of through hole H2 two be parallel to each other and with groove L1, the L2 of through hole H2 axis normal, the inner chamber that groove L1, L2 make hydraulic cylinder G1 from the side with outer communication, as shown in Figure 3.Voltage stabilizing mechanism is installed on the through hole H1, and hydraulic pressure output governor motion is installed on the through hole H2.Voltage stabilizing mechanism is made up of pressure maintaining valve 1 and the pressure-stabilizing spring 2 that is attached thereto; Hydraulic pressure output governor motion is by adjustment screw 3, control valve 4, ball 5 and decide torsion spring 6 and connect to form successively, and adjustment screw 3 is positioned at front end, decides torsion spring 6 and is positioned at the rear end, as shown in Figure 1.This improvement project can be implemented on the hydraulic cylinder G of prior art equally.
The front and rear cover that matches with the above-mentioned hydraulic cylinder G1 that through hole H1 and H2 arranged respectively as shown in Figure 6 and Figure 7.The end face of drive end bearing bracket F is provided with a blind hole H3 and an oil guiding hole H4, and oil guiding hole H4 passes and perpendicular to blind hole H3, when assembling, and the through hole H1 dead in line on blind hole H3 and the hydraulic cylinder G1; Rear end cap V is provided with a blind hole H5 and a stepped hole that is made of H7 and H8, and this stepped hole has an oil guiding hole H6 between blind hole H5 and stepped hole on the central axis of bonnet V, and blind hole H5 is corresponding with the through hole H2 on the hydraulic cylinder G1.Hole H5 is used for installing and decides torsion spring 6, and the macropore H7 of stepped hole is used for installing out oil jacket 10, and aperture H8 is used for installing piston 9, sees Fig. 1.Control valve 4 is provided with the stepped hole and the oil guiding hole H10 of H9 and H11 formation, and the aperture of H9 is greater than H11, and this stepped hole is vertical mutually with oil guiding hole H10, as shown in Figure 8.
Can more clearly reflect structure of the present invention and duty below in conjunction with Fig. 1 and Fig. 9.According to the pluse torque generator Y1 that above-mentioned each unit architecture was assembled into, the section situation when a duty as shown in Figure 9.Pluse torque generator Y1 inside is hydraulic oil abrim, and the pressure of liquid will be passed to control valve 4 by the groove L2 among the hydraulic cylinder G1 when pulse generation, and just this pressure is passed to ball 5 by oil guiding hole H10; When the fluid pressure that is taken place is slightly larger than when deciding torsion spring 6 and being pressed on the ball 5 pressure, ball 5 is just backed down by the pressure of liquid, by the oil guiding hole among the hydraulic cylinder rear end cap V, the pressure of liquid will transmit and go out the piston 9 that oil jacket 10 is connected, promotion lower piston 9 at fluid pressure will move certain distance, and the stop controlling organization that links to each other with pluse torque generator Y1 of promotion, make power source stop reinforcing.When power disappears, fluid pressure vanishing among the hydraulic cylinder G1, the liquid that flows out from hydraulic cylinder G1 is at the effect lower compression return spring 7 of pressure, and backs down ball 8, and the fit clearance by main shaft Z1 and hydraulic cylinder rear end cap V flow back among the hydraulic cylinder G1.If rightabout rotational pulse torque generator Y1 according to Fig. 9, at this moment fluid pressure that still can pulsing, this pressure is passed to hole H11 in the control valve 4 by the groove L1 among the hydraulic cylinder G1, because the aperture of hole H11 is less than hole H9, the dividing potential drop of this pressure on oil guiding hole H10 is zero, so the pressure of liquid flow back among the hydraulic cylinder G1 by hole H9 and can not arrive ball 5.According to such result, pluse torque generator Y1 can only play when a direction motion and stop afterburning effect.
In use because the rising of fluid temperature, hydraulic oil takes place inevitably that volume is swollen to rise, and the pressure of liquid will raise among the hydraulic cylinder G1, just is not directly passed to ball 5 if do not add compensation, the output accuracy of power value in the time of will influencing torque pulse.And in pluse torque generator Y1 owing to be provided with voltage stabilizing mechanism, when the rising of the pressure Yin Wendu of liquid among the hydraulic cylinder G1 and when increasing, pressure-stabilizing spring 2 segment distance of will shrinking back, to compensate for the volume of expansion of liquids part, the interior fluid pressure of hydraulic cylinder G1 is changed in very little scope, so just improved the moment of torsion output accuracy of pluse torque generator Y1.
Figure 11 after cooperating in the shell that is installed in rifle formula pulse spanner with gas motor M, can become stable, an accurate pluse torque spanner of moment of torsion output as an application example of the present invention to pulse torque generator Y1.
Blade shown in Figure 2 not only cooperates with hydraulic cylinder of the present invention can produce positive effect, also can produce good relatively effect even be assemblied among the hydraulic cylinder G of prior art.Equally, Fig. 3 and two kinds of hydraulic cylinders shown in Figure 10 also can cooperate with the main shaft Z of prior art and blade B and install and use.In a word, each main element of the present invention also can exchange with the corresponding component in the prior art hydraulic torque impulse generator, can both produce positive effect.
Claims (5)
1. hydraulic torque impulse generator that is used for torque wrench, comprise main shaft, hydraulic cylinder and be inserted in two blades and hydraulic cylinder drive end bearing bracket and rear end cap in the main shaft blade groove, it is characterized in that: described blade C is by substrate D and roll pin b and constitute, there is a groove that is parallel to substrate plane on the top, outer of substrate D, rolls pin b and is inserted in this groove.
2. according to the described a kind of hydraulic torque impulse generator that is used for torque wrench of claim 1, it is characterized in that: the inner chamber vertical cross section shape approximation of described hydraulic cylinder G1 is in ellipse, at the long axis of ellipse two ends along the hydraulic cylinder inwall two right angled convax edge K1 arranged vertically; There are two right angled convax edge I1s parallel with fin K1 the same side of slightly departing from minor axis at the minor axis two ends of ellipse; Two and the corresponding vertical right angled convax edge J1 in right angled convax edge I1 position are arranged on the described spindle outer wall.
3. according to claim 1 or 2 described a kind of hydraulic torque impulse generators that are used for torque wrench, it is characterized in that: the casing wall of described hydraulic cylinder G1 is provided with two through hole H1, H2, these two through holes are respectively near the two ends of cylinder body cross section radial line and be parallel to the axis of cylinder body, the both sides of through hole H2 be provided with again two be parallel to each other and with groove L1, the L2 of through hole H2 axis normal, a voltage stabilizing mechanism is installed on the through hole H1, a hydraulic pressure output governor motion is installed on the through hole H2; A blind hole H3 and an oil guiding hole H4 are set on the end face of described hydraulic cylinder drive end bearing bracket F, and oil guiding hole H4 passes and perpendicular to blind hole H3; A blind hole H5 and a stepped hole of being made up of H7, H8 are set on described hydraulic cylinder rear end cap V, and this stepped hole has an oil guiding hole H6 between blind hole H5 and stepped hole on the central axis of rear end cap V, and blind hole H5 is corresponding with through hole H2.
4. according to the described a kind of hydraulic torque impulse generator that is used for torque wrench of claim 3, it is characterized in that: described voltage stabilizing mechanism is made up of pressure maintaining valve (1) and the pressure-stabilizing spring (2) that is attached thereto.
5. according to the described a kind of hydraulic torque impulse generator that is used for torque wrench of claim 3, it is characterized in that: described hydraulic pressure output governor motion is by adjustment screw (3), control valve (4), ball (5) and decide torsion spring (6) and connect to form successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610042711 CN101058175A (en) | 2006-04-22 | 2006-04-22 | Hydraulic torque pulse generator for torque wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610042711 CN101058175A (en) | 2006-04-22 | 2006-04-22 | Hydraulic torque pulse generator for torque wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101058175A true CN101058175A (en) | 2007-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610042711 Pending CN101058175A (en) | 2006-04-22 | 2006-04-22 | Hydraulic torque pulse generator for torque wrench |
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| CN (1) | CN101058175A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102905851A (en) * | 2010-05-12 | 2013-01-30 | 阿特拉斯·科普柯工业技术公司 | Power wrench with hydraulic pulse unit |
| CN105873730A (en) * | 2013-12-27 | 2016-08-17 | 阿特拉斯·科普柯工业技术公司 | Hydraulic torque impulse generator |
| CN109531489A (en) * | 2019-01-16 | 2019-03-29 | 泰田集团有限公司 | Spanner and oil pressure pulse device thereof |
-
2006
- 2006-04-22 CN CN 200610042711 patent/CN101058175A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102905851A (en) * | 2010-05-12 | 2013-01-30 | 阿特拉斯·科普柯工业技术公司 | Power wrench with hydraulic pulse unit |
| CN102905851B (en) * | 2010-05-12 | 2015-02-18 | 阿特拉斯·科普柯工业技术公司 | Power wrench with hydraulic pulse unit |
| CN105873730A (en) * | 2013-12-27 | 2016-08-17 | 阿特拉斯·科普柯工业技术公司 | Hydraulic torque impulse generator |
| CN109531489A (en) * | 2019-01-16 | 2019-03-29 | 泰田集团有限公司 | Spanner and oil pressure pulse device thereof |
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