CN104316397A - Bistable-state direct-driven loading and unloading unit for main shaft of hardness tester - Google Patents
Bistable-state direct-driven loading and unloading unit for main shaft of hardness tester Download PDFInfo
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- CN104316397A CN104316397A CN201410617454.3A CN201410617454A CN104316397A CN 104316397 A CN104316397 A CN 104316397A CN 201410617454 A CN201410617454 A CN 201410617454A CN 104316397 A CN104316397 A CN 104316397A
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Abstract
The invention discloses a bistable-state direct-driven loading and unloading unit for the main shaft of a hardness tester. The loading and unloading unit comprises a loading and unloading mechanism and a main shaft mechanism, wherein a small piston is arranged at one end of a ball screw in the loading and unloading mechanism, and the ball screw is matched with a nut; a connecting sleeve is arranged between a bearing sleeve and a front sleeve, one end of the connecting sleeve is connected with the bearing sleeve, and the other end of the connecting sleeve and the front sleeve extend into the inner cavity of a bend; a large piston is arranged in the inner cavity of a large oil cylinder body in the main shaft mechanism, and a sensor connecting disc, a sensor and a pressure head are fixedly mounted at the lower end of a large piston rod sleeved with a spring; the front sleeve and the inner cavity of the bend are communicated with the inner cavity of the large oil cylinder body fixedly mounted under the bend through an oil hole in the bend. According to the loading and unloading unit, the main shaft can be loaded and unloaded, the loading and unloading mechanism and the main shaft mechanism are stable gapless devices respectively and are directly connected to form an organic whole body with an accurate position, and the tedious position adjustment operation does not need to be carried out; moreover, the main shaft is large in travel, ingenious in structure, small in size, good in shockproof buffer effects and high in test precision.
Description
Technical field
The present invention relates to sclerometer manufacturing technology field, specifically relate to a kind of bistable state direct-drive type sclerometer main shaft and add off-load unit.
Background technology
The afterburning sclerometer of conventional electrical, primarily of three separate mechanism's compositions, is mainshaft mechanism, leverage respectively, adds unloading mechanism.These three mechanisms are arranged in scleroscopic frame respectively, and by the connection in frame, the position of each self-adjusting self or attitude, realize tram mutual between three mechanisms.Wherein:
(1) unloading mechanism is added primarily of compositions such as ball-screw vice mechanism, guiding rotation preventive mechanism, bracket institution, buffer gear, motor and motor mounting rack mechanisms.Its function produces power by power transmission on leverage.In order to ensure that the power produced can slowly shock-freely be delivered on leverage, the direction of motion of ball screw assembly, must be parallel with the direction of motion of guiding spline, and the kinematic pair tolerance clearance of the rotation preventive mechanism that leads must keep enough accuracy.
Its main deficiency is: complex structure, and volume is large; Stationarity and the accuracy of loading are poor, have impact on scleroscopic measuring accuracy.
(2) leverage is primarily of compositions such as lever, lever shaft, power transmission knife, bearings, and its function is delivered on mainshaft mechanism through lever amplification by the power adding unloading mechanism.In order to ensure that the power adding unloading mechanism is accurately delivered on mainshaft mechanism by lever energy, the lever ratio of leverage must accurately, and manufacturing accuracy requires higher, and the application point of power transmission knife must be sharp, durable, has long-time stability.
Its main deficiency is: when travel of spindle requires large, and must increase travel of spindle by the pendulum angle strengthening leverage, such leverage just creates larger radial force to mainshaft mechanism.Even if it is very accurate that the lever ratios of leverage etc. make, the power adding unloading mechanism is also difficult to accurately be delivered on mainshaft mechanism, except the power transmission knife of leverage easily damages, it also creates considerable influence to the friction of main shaft to the radial force that mainshaft mechanism produces, and even damages main shaft.Leverage can only use within the scope of less angle of oscillation as can be seen here, correspondingly also can only realize less travel of spindle.
The whole edge of a knife of the power transmission knife in leverage steadily must contact on total length with the load edge bearing in mainshaft mechanism, and is afraid of vibration, is subject to external environmental interference; Mutual alignment between power transmission knife and load edge bearing needs repeatedly to debug, and troublesome poeration, adds labour intensity.
(3) mainshaft mechanism is primarily of compositions such as main shaft, spindle drum, guide frame, main spindle's adjuster, fixator, load edge bearings, and its function is the applying realizing sclerometer test force.During in order to ensure that main shaft runs, friction force is little, and position is accurate, and the precision realizing test force applies, and must improve the precision of part, most part needs to process through accurate grinding.But this mainshaft mechanism is a structure having gap after all, bring huge restriction to obtaining high precision further.
Its main deficiency is: mainshaft mechanism is independently arranged, have gap, afterburning unstable, easily rocks; Processing component quantity is many, complex process, and manufacturing cost is high.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of bistable state direct-drive type sclerometer main shaft that can overcome above-mentioned deficiency and adds off-load unit, it can realize main shaft and add unloading function, add unloading mechanism, mainshaft mechanism is respectively stable slackless arrangement, the two directly connects into a position organic whole accurately, without the need to carrying out loaded down with trivial details mutual alignment adjustment; And travel of spindle is large, and delicate structure, volume are little, easy to operate, and antivibration good buffer effect, measuring accuracy is high.
In order to solve the problems of the technologies described above, the present invention takes following technical scheme:
Bistable state direct-drive type sclerometer main shaft adds off-load unit, comprises and adds unloading mechanism, mainshaft mechanism, wherein:
Add unloading mechanism and comprise step drive mechanism, screw, ball-screw, valve piston, adapter sleeve, protheca, elbow, wherein: one end of ball-screw is provided with valve piston, and the two is structure as a whole; This ball-screw coordinates with screw, and this screw is arranged in the inner chamber of bearing holder (housing, cover) by pair of bearings I; Adapter sleeve is arranged between bearing holder (housing, cover) and protheca, and one end of this adapter sleeve is fixedly connected with bearing holder (housing, cover), and the annular protrusion that adapter sleeve is provided with is fixedly connected with elbow, and the other end of this adapter sleeve and protheca all stretch in the inner chamber of elbow;
Mainshaft mechanism comprises large tank body, large piston, large piston rod, Compress Spring, cylinder cover, sensor terminal pad, sensor, pressure head, wherein: large tank body is packed in below elbow, is fixed with cylinder cover in the bottom of large tank body; In large tank intracoelomic cavity, large piston is installed, large piston is provided with the inner chamber be communicated with large tank intracoelomic cavity; Below large piston, be provided with large piston rod, be arranged with Compress Spring at the cylindrical of large piston rod; The lower end of large piston rod is fixed with sensor terminal pad, and sensor terminal pad is fixed with sensor, is provided with pressure head on a sensor by pressure head bar;
The inner chamber of protheca and elbow is communicated by the inner chamber of the elbow oilhole be provided with and the large tank body be positioned at below elbow and large piston; Hydraulic oil is provided with in the inner chamber of the inner chamber of protheca and elbow, oilhole and large tank body and large piston.
Described step drive mechanism comprises stepper motor, small pulley, belt, large belt wheel; Its annexation is: on the output shaft of stepper motor, be provided with small pulley, and this small pulley is formed by belt and the large belt wheel be arranged on screw and is in transmission connection; Stepper motor is arranged on motor cabinet, and this motor cabinet is packed in the bottom of bearing holder (housing, cover).
The inner chamber of described adapter sleeve communicates with the inner chamber of protheca and elbow; The lumen centers line of described bearing holder (housing, cover), screw, adapter sleeve, protheca and elbow is all located along the same line.
Described adding in unloading mechanism, also comprises guiding rotation preventive mechanism, and this guiding rotation preventive mechanism comprises guiding spline seat, screw mandrel, bearing II, nut, packing ring, screw, spline circle; Wherein: on guiding spline seat, be provided with horizontal guide slot; One end of screw mandrel is provided with bearing II, and this bearing II is arranged in above-mentioned gathering sill; The other end of this screw mandrel is provided with external thread, and the corresponding threaded holes be provided with spline circle closes, and by nut lock; The other end of ball-screw is square Step Shaft, and the square through hole be provided with spline circle matches, and spline circle, packing ring is pressed abd fixed on the other end of ball-screw by screw; When ball-screw moves forward and backward, bearing II can be simultaneously movable in above-mentioned horizontal guide slot.
Described adding in unloading mechanism, also comprises oil-bearing structure, this oil-bearing structure comprises fuel tank, oil nozzle, wherein: fuel tank is arranged on the top of elbow, this fuel tank is communicated with the inner chamber on protheca and adapter sleeve by the oil nozzle which is provided with and the space between protheca and adapter sleeve end.
The annular groove face that upper surface and the large piston of described Compress Spring are provided with contacts, and the annular table terrace that its lower surface and cylinder cover are provided with contacts.
The central axis of described large piston, large piston rod, cylinder cover, sensor terminal pad, sensor, pressure head bar and pressure head is all located along the same line.
The working front edge of described valve piston is provided with multiple grommet type seals I, and an outer O-ring seal end, its position is with tapering; The other end of valve piston is provided with multiple grommet type seals II.
Also comprise guiding rotation-preventing mechanism in described mainshaft mechanism, this guiding rotation-preventing mechanism comprises cylinder cover, sensor terminal pad, the axis of guide, and its annexation is: the upper end correspondence of the lower end of cylinder cover and sensor terminal pad is provided with a pair pilot hole; Match with above-mentioned a pair pilot hole respectively in the two ends of this axis of guide.
The center line of described valve piston and the center line of large piston are an angle, and this angle is 0 ° ~ 90 °.
Compared with the prior art the present invention, has following beneficial effect:
The present invention has the design feature of bistable state, direct-drive type, wherein:
So-called bistable state refers to that the present invention is made up of two stable devices: one, add the input end of unloading mechanism as power, it constitutes a stable slackless arrangement by step drive mechanism, ball-screw, screw, valve piston, O-ring seal, bearing I, bearing holder (housing, cover), adapter sleeve, protheca, elbow and guiding rotation preventive mechanism and oil-bearing structure etc., achieves stable power input; They are two years old, mainshaft mechanism is as the actuating station of power, it constitutes a stable slackless arrangement by large tank body, large piston, O-ring seal, Compress Spring, cylinder cover, sensor terminal pad, sensor, pressure head bar, pressure head and guiding rotation-preventing mechanism etc., achieves the stable output of test force.
So-called direct-drive type refer to as power intake add unloading mechanism and as the stable device of the mainshaft mechanism these two of power actuating station, directly be connected with the large tank body in mainshaft mechanism via the elbow added in unloading mechanism, thus make two stable devices define a position organic whole accurately, without the need to carrying out loaded down with trivial details mutual alignment adjustment, assemble complete can coming into operation.
Delicate structure of the present invention, volume are little, achieve main shaft gapless, long-cherished wish that stroke is large, and exquisite completes scleroscopic test principle, and easy to operate, and loading exactly, antivibration good buffer effect, measuring accuracy is high, and labour intensity is low.The present invention only needs machine-building conveniently, assembly method is carried out, and needs strict to control mutual alignment between the gap of the mechanisms such as spindle unit, each parts or attitude etc. without the need to the manufacture again as conventional hardness meter.The present invention is applied on various types of sclerometer, realizes adding unloading function.
Accompanying drawing explanation
Fig. 1 is main TV structure figure of the present invention;
Fig. 2 is the enlarged drawing in A portion in Fig. 1.
Part description in Fig. 1-Fig. 2:
1, stepper motor; 1-1, small pulley; 2, belt; 3, large belt wheel; 4, motor cabinet; 5, ball-screw; 5-1, annular groove; 5-2, valve piston; 6, screw; 7, bearing I; 8, bearing holder (housing, cover); 9, O-ring seal I; 10, O-ring seal II; 11, adapter sleeve; 12, protheca; 13, elbow; 13-1, oilhole; 14, fuel tank; 14-1, oil nozzle; 15, large piston; 15-1, large piston rod; 16, large tank body; 17, cylinder cover; 18, Compress Spring; 19, sensor terminal pad; 20, sensor; 21, pressure head; 22, the axis of guide; 23, lead spline seat; 23-1, gathering sill; 24, bearing II; 25, screw mandrel; 26, nut; 27, screw; 28, packing ring; 29, spline circle.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1 and Figure 2, the present invention includes and add unloading mechanism, mainshaft mechanism, wherein:
(1) unloading mechanism is added: with reference to Fig. 1, Fig. 2.
The effect adding unloading mechanism is: produce power, and be stably delivered on valve piston by ball-screw by power.Specifically: be ball-screw by the convert rotational motion of stepper motor, the tandem of valve piston moves.
As shown in Figure 1 and Figure 2, add unloading mechanism and comprise step drive mechanism, screw 6, ball-screw 5, valve piston 5-2, O-ring seal I 9, O-ring seal II 10, bearing I 7, bearing holder (housing, cover) 8, adapter sleeve 11, protheca 12, elbow 13 and guiding rotation preventive mechanism and oil-bearing structure, wherein:
Step drive mechanism comprises stepper motor 1, small pulley 1-1, belt 2, large belt wheel 3, motor cabinet 4; Its annexation is: on the output shaft of stepper motor 1, be provided with small pulley 1-1, and this small pulley 1-1 is formed by belt 2 and the large belt wheel 3 be arranged on screw 6 and is in transmission connection; Screw 6 coordinates with ball-screw 5, and this screw 6 is arranged in the inner chamber of bearing holder (housing, cover) 8 by pair of bearings I 7.Stepper motor 1 is arranged on motor cabinet 4, and this motor cabinet 4 is packed in the bottom of bearing holder (housing, cover) 8.Certainly, step drive mechanism also can be replaced by servo-actuating device.
As shown in Figure 1, one end of ball-screw 5 is provided with valve piston 5-2, and the two is structure as a whole.The center line of valve piston 5-2 and ball-screw 5 is located along the same line.
The working front edge of valve piston 5-2 is Step Shaft, is provided with multiple grommet type seals I 9, and an outer O-ring seal end, its position is with tapering; The other end be connected with ball-screw 5 at valve piston 5-2 is provided with multiple annular groove 5-1, in above-mentioned annular groove 5-1, be provided with grommet type seals II 10.
Adapter sleeve 11 is arranged between bearing holder (housing, cover) 8 and protheca 12; One end of this adapter sleeve 11 is fixedly connected with bearing holder (housing, cover) 8, and the annular protrusion that adapter sleeve 11 is provided with is fixedly connected with elbow 13, and the other end and the protheca 12 of this adapter sleeve 11 all stretch in the inner chamber of elbow 13.The inner chamber of adapter sleeve 11 communicates with the inner chamber of protheca 12 and elbow 13; The lumen centers line of bearing holder (housing, cover) 8, screw 6, adapter sleeve 11, protheca 12 and elbow 13 is all located along the same line.The inner chamber assembled by adapter sleeve 11 and protheca 12 and elbow 13 is exactly the working cavities of valve piston; Ball-screw 5 is then equivalent to small piston rod.
Protheca 12 is communicated with the large tank intracoelomic cavity be positioned at below elbow, large piston cavity by the oilhole 13-1 be provided with vertical on elbow with the inner chamber of elbow 13.Hydraulic oil is provided with in the inner chamber of the inner chamber of protheca 12 and elbow 13, oilhole 13-1 and large tank body 16 and large piston 15.
Ball-screw 5 is under the drive of step drive mechanism, and valve piston 5-2 can carry out tandem motion in adapter sleeve 11 with the inner chamber of protheca 12.
The outer circumference surface of the protheca 12 matched with elbow 13 and adapter sleeve 11 is provided with multiple annular groove, in above-mentioned annular groove, is provided with grommet type seals.
As shown in Figure 2, the rotation preventive mechanism that leads comprises guiding spline seat 23, gathering sill 23-1, bearing II 24, screw mandrel 25, nut 26, screw 27, packing ring 28, spline circle 29; Wherein:
Guiding spline seat 23 is provided with horizontal guide slot 23-1.One end of screw mandrel 25 is provided with bearing II 24, and this bearing II 24 is arranged in above-mentioned gathering sill 23-1; The other end of this screw mandrel 25 is provided with external thread, and matches with the center screw that spline circle 29 is provided with, and is then locked by nut 26.
One end of ball-screw 5 is provided with valve piston 5-2, and its other end is square Step Shaft, and is provided with the threaded hole matched with screw 27; The square through hole that above-mentioned square Step Shaft and spline circle 29 are provided with matches.Closed by screw 27 and the corresponding threaded holes on ball-screw 5, thus spline circle 29, packing ring 28 are pressed abd fixed on the other end of ball-screw 5.
When ball-screw 5 moves forward and backward, bearing II 24 can be simultaneously movable in above-mentioned horizontal guide slot 23-1; Thus make guiding rotation preventive mechanism play the effect of horizontally-guided and spline, ball-screw 5 can be made to move forward and backward, but can not rotate.
As shown in Figure 1, oil-bearing structure comprises fuel tank 14, oil nozzle 14-1, wherein: fuel tank 14 is arranged on the top of elbow 13, this fuel tank 14 is communicated with the inner chamber on protheca 12 and adapter sleeve 11 by the oil nozzle 14-1 which is provided with and the space between protheca 12 and adapter sleeve 11 end.
Certainly, protheca 12 and adapter sleeve 11 also can be structure as a whole, and are provided with the oilhole for being communicated with its inner chamber and oil nozzle 14-1.
During off-load, the inner chamber on protheca 12 and adapter sleeve 11 is in negative pressure state, occurs bubble; At this moment, the hydraulic oil in fuel tank 14 is entered in the inner chamber of protheca 12 and adapter sleeve 11 by oil nozzle 14-1, supplements in time.
(2) mainshaft mechanism: with reference to Fig. 1.
As shown in Figure 1, mainshaft mechanism can realize the accurate applying of sclerometer test force, and the accurate control to main shaft loading force value.
Mainshaft mechanism comprises large tank body 16, large piston 15, large piston rod 15-1, Compress Spring 18, cylinder cover 17, sensor terminal pad 19, sensor 20, pressure head bar, pressure head 21 and guiding rotation-preventing mechanism, wherein:
Below the elbow 13 added in unloading mechanism, be fixed with the large tank body 16 in mainshaft mechanism, thus realize adding unloading mechanism and being connected with the direct of mainshaft mechanism.
Large piston 15 is installed in large tank intracoelomic cavity, large piston 15 is provided with the inner chamber with large tank body 16 inner space.Cylinder cover 17 is fixed with in the bottom of large tank body 16.
Below large piston 15, be provided with large piston rod 15-1, be arranged with Compress Spring 18 at the cylindrical of large piston rod 15-1; The annular groove face that upper surface and the large piston 15 of this Compress Spring 18 are provided with contacts, and its lower surface contacts with the annular table terrace on cylinder cover 17.
The lower end of large piston rod 15-1 through the center pit on cylinder cover 17 and sensor terminal pad 19, and is solidly installed with sensor terminal pad 19.Sensor terminal pad 19 is fixed with sensor 20, pressure head bar is installed in the center pit of sensor 20, pressure head bar is provided with pressure head 21.The central axis of large piston 15, large piston rod 15-1, cylinder cover 17, sensor terminal pad 19, sensor 20, pressure head bar and pressure head 21 is all located along the same line.
Be respectively arranged with annular groove on the outer circumference surface of large piston 15 and on the inner peripheral surface of cylinder cover 17, in above-mentioned annular groove, be provided with grommet type seals.
As shown in Figure 1, guiding rotation-preventing mechanism comprises cylinder cover 17, sensor terminal pad 19, the axis of guide 22, and its annexation is: the upper end correspondence of the lower end of oil cylinder seat 17 and sensor terminal pad 19 is provided with a pair pilot hole matched with the axis of guide 22; Match with above-mentioned a pair pilot hole respectively in the two ends of this axis of guide 22.
Guiding rotation-preventing mechanism can play the effect of vertically-guided and anti-rotation, makes sensor 20 on sensor terminal pad 19 and pressure head 21 can only elevating movement, but can not rotate.
(3) course of work of the present invention is as follows: with reference to Fig. 1, Fig. 2.
The hydraulic mechanism that the present invention is arranged between valve piston 5-2 and large piston 15 plays leverage, can will add the power of unloading mechanism generation, effectively amplifies, and be delivered to exactly on pressure head through valve piston 5-2, hydraulic oil and large piston 15.
The principle of work of hydraulic mechanism is: hydraulic oil is from valve piston working cavities, by the oilhole that elbow is provided with, enter large tank intracoelomic cavity, large piston cavity, thus realize amplification, the transmission of power, and then realize being converted to the elevating movement of large piston, pressure head by ball-screw, seesawing of valve piston.Operating inner diameter due to large piston is greater than the operating inner diameter of valve piston, thus can realize power augmentation function, though the little output force value of input force value becomes large, and then reaches the object of lowering energy-saving.
In an angle between the center line of valve piston 5-2 and the center line of large piston 15, this angle is 0 ° ~ 90 °.Specifically, the center line of valve piston 5-2 and the center line of large piston 15 can be 90 ° of angles, and as shown in this embodiment, valve piston 5-2 is horizontally disposed with, and large piston 15 is vertically arranged; The center line of valve piston 5-2 and the center line of large piston 15 can be also 0 ° of angle, and namely the center line of the two is located along the same line; The center line of the center line of valve piston 5-2 and large piston 15 can also arbitrarily angled between 0 ° ~ 90 °.
The course of work of the present invention is as follows:
During loading, stepper motor 1 rotates forward, and drive small pulley 1-1 to rotate, and pass to large belt wheel 3 by belt 2, large belt wheel 3 drives ball-screw 5, screw 6 rotates, and ball-screw 5 is moved forward; Meanwhile, movable in the gathering sill 23-1 that the bearing II 24 on screw mandrel 25 is provided with on guiding spline seat 23; Valve piston 5-2 promotion hydraulic oil on ball-screw 5 promotes large piston 15 by oilhole 13-1 and moves down; Thus band dynamic sensor 20, pressure head 21 carry out accurate reinforcing, form the closed-loop control of a power, complete loading process.Protect lotus certain hour.
During off-load, stepper motor 1 reverses, and drives ball-screw 5 to move backward; Between valve piston 5-2 and large piston 15, produce negative pressure, band dynamic sensor 20, pressure head 21 move up; Meanwhile, parking position accuracy under the booster action of Compress Spring 18, completes unloading process.
Claims (10)
1. bistable state direct-drive type sclerometer main shaft adds off-load unit, it is characterized in that,
A, comprise and add unloading mechanism, mainshaft mechanism, wherein:
B, add unloading mechanism and comprise step drive mechanism, screw (6), ball-screw (5), valve piston (5-2), adapter sleeve (11), protheca (12), elbow (13), wherein:
One end of ball-screw (5) is provided with valve piston (5-2), and the two is structure as a whole; This ball-screw (5) coordinates with screw (6), and this screw (6) is arranged in the inner chamber of bearing holder (housing, cover) (8) by pair of bearings I (7);
Adapter sleeve (11) is arranged between bearing holder (housing, cover) (8) and protheca (12); One end of this adapter sleeve (11) is fixedly connected with bearing holder (housing, cover) (8), and the annular protrusion that adapter sleeve (11) is provided with is fixedly connected with elbow (13), and the other end and the protheca (12) of this adapter sleeve (11) all stretch in the inner chamber of elbow (13);
C, mainshaft mechanism comprise large tank body (16), large piston (15), large piston rod (15-1), Compress Spring (18), cylinder cover (17), sensor terminal pad (19), sensor (20), pressure head bar, pressure head (21), wherein:
Large tank body (16) is packed in below elbow (13); Cylinder cover (17) is fixed with in the bottom of large tank body (16); Large piston (15) is installed in large tank intracoelomic cavity, large piston (15) is provided with the inner chamber with large tank body (16) inner space; Below large piston (15), be provided with large piston rod (15-1), be arranged with Compress Spring (18) at the cylindrical of large piston rod (15-1);
The lower end of large piston rod (15-1) is fixed with sensor terminal pad (19), and sensor terminal pad (19) is fixed with sensor (20), and sensor (20) is provided with pressure head (21) by pressure head bar;
The inner chamber oilhole (13-1) be provided with by elbow and the large tank body be positioned at below elbow of d, protheca (12) and elbow (13) and the inner chamber of large piston are communicated; Hydraulic oil is provided with in the inner chamber of the inner chamber of protheca (12) and elbow (13), oilhole (13-1) and large tank body (16) and large piston (15).
2. bistable state direct-drive type sclerometer main shaft as claimed in claim 1 adds off-load unit, it is characterized in that, described step drive mechanism comprises stepper motor (1), small pulley (1-1), belt (2), large belt wheel (3); Its annexation is: on the output shaft of stepper motor (1), be provided with small pulley (1-1), and this small pulley (1-1) is formed by belt (2) and the large belt wheel (3) be arranged on screw (6) and is in transmission connection; This stepper motor (1) is arranged on motor cabinet (4), and this motor cabinet (4) is packed in the bottom of bearing holder (housing, cover) (8).
3. bistable state direct-drive type sclerometer main shaft as claimed in claim 2 adds off-load unit, and it is characterized in that, the inner chamber of described adapter sleeve (11) communicates with the inner chamber of protheca (12) and elbow (13); The lumen centers line of described bearing holder (housing, cover) (8), screw (6), adapter sleeve (11), protheca (12) and elbow (13) is all located along the same line.
4. the bistable state direct-drive type sclerometer main shaft as described in claim 1 or 2 or 3 adds off-load unit, it is characterized in that, described adding in unloading mechanism, also comprises guiding rotation preventive mechanism, and this guiding rotation preventive mechanism comprises guiding spline seat (23), screw mandrel (25), bearing II (24), nut (26), packing ring (28), screw (27), spline circle (29); Wherein: in guiding spline seat (23), be provided with horizontal guide slot (23-1); One end of screw mandrel (25) is provided with bearing II (24), and this bearing II (24) is arranged in above-mentioned gathering sill (23-1); The other end of this screw mandrel (25) is provided with external thread, and the corresponding threaded holes be provided with spline circle (29) closes, and is locked by nut (26); The other end of ball-screw (5) is square Step Shaft, and the square through hole be provided with spline circle (29) matches, and spline circle (29), packing ring (28) is pressed abd fixed on the other end of ball-screw (5) by screw (27); When ball-screw (5) is movable, bearing II (24) can be simultaneously movable in above-mentioned horizontal guide slot (23-1).
5. bistable state direct-drive type sclerometer main shaft as claimed in claim 4 adds off-load unit, it is characterized in that, described adding in unloading mechanism, also comprises oil-bearing structure, this oil-bearing structure comprises fuel tank (14), oil nozzle (14-1), wherein: fuel tank (14) is arranged on the top of elbow (13), this fuel tank (14) is communicated with the inner chamber on protheca (12) and adapter sleeve (11) by the oil nozzle (14-1) which is provided with and the space between protheca (12) and adapter sleeve (11) end.
6. bistable state direct-drive type sclerometer main shaft as claimed in claim 5 adds off-load unit, it is characterized in that, the annular groove face that upper surface and the large piston (15) of described Compress Spring (18) are provided with contacts, and the annular table terrace that its lower surface is provided with cylinder cover (17) contacts.
7. bistable state direct-drive type sclerometer main shaft as claimed in claim 6 adds off-load unit, it is characterized in that, the central axis of described large piston (15), large piston rod (15-1), cylinder cover (17), sensor terminal pad (19), sensor (20), pressure head bar and pressure head (21) is all located along the same line.
8. bistable state direct-drive type sclerometer main shaft as claimed in claim 7 adds off-load unit, and it is characterized in that, the working front edge of described valve piston (5-2) is provided with multiple grommet type seals I (9), and an outer O-ring seal end, its position is with tapering; The other end of valve piston (5-2) is provided with multiple grommet type seals II (10).
9. bistable state direct-drive type sclerometer main shaft as claimed in claim 8 adds off-load unit, it is characterized in that, guiding rotation-preventing mechanism is also comprised in described mainshaft mechanism, this guiding rotation-preventing mechanism comprises cylinder cover (17), sensor terminal pad (19), the axis of guide (22), and its annexation is: the upper end correspondence of the lower end of cylinder cover (17) and sensor terminal pad (19) is provided with a pair pilot hole; Match with above-mentioned a pair pilot hole respectively in the two ends of this axis of guide (22).
10. bistable state direct-drive type sclerometer main shaft as claimed in claim 9 adds off-load unit, it is characterized in that, in an angle between the center line of described valve piston (5-2) and the center line of large piston (15), this angle is 0 ° ~ 90 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617454.3A CN104316397B (en) | 2014-11-06 | 2014-11-06 | Bistable state direct-drive type durometer main shaft adds off-load unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617454.3A CN104316397B (en) | 2014-11-06 | 2014-11-06 | Bistable state direct-drive type durometer main shaft adds off-load unit |
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| CN104316397A true CN104316397A (en) | 2015-01-28 |
| CN104316397B CN104316397B (en) | 2016-08-24 |
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| CN104316397B (en) | 2016-08-24 |
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