CN201738802U - Deceleration rig rotary power head with high-order elliptic profile end surfaces and movable teeth - Google Patents

Abstract

A deceleration rig rotary power head with high-order elliptic profile end surfaces and movable teeth adopts the technical scheme that a common rotary motor is used to supply power; both a groove tooth surface on an input shaft and a groove tooth surface of a fixed internal gear are provided with equidistant high-order elliptic curves; the cylindrical movable teeth skid in uniformly-distributed grooves of an output shaft, and are in contact with the groove tooth surface on the input shaft and the groove tooth surface of the fixed internal gear for skidding; the groove tooth surface on the input shaft, the groove tooth surface of the fixed internal gear, the movable teeth and the uniformly-distributed grooves of the output shaft form a movable tooth speed changing device; the fixed internal gear is fixedly connected with an engine base; the center line of the input shaft is coaxial with that of the output shaft; the output shaft is supported on the engine base through bearings; the input shaft is supported on the output shaft and the engine base through bearings; and a hole is formed on the output shaft and communicated with an air chamber fixed on the engine base. The utility model has the advantages that the speed changing device can realize optional gear differential due to such self-balancing moving elements as the input shaft and the like, so that the rig rotary power head adopting the speed changing device has convenient assembly and disassembly, large transmission torque and small radial dimension, and is suitable for heavy-load rock drilling machinery.

Description

A kind of high-order elliptic surface end face decelerating movable teeth rig rotary motive power head

Technical field

The utility model relates to high-order elliptic surface end face decelerating movable teeth rig rotary motive power head, belongs to gearing and rock drilling machinery apparatus field.

Background branch art

Various rigs are widely used in the engineering explosion hole drill cutter operations such as metallurgy, railway, mine, building materials, highway.Rig rotary motive power head is one of critical component of rig, its deceleration device requires in light weight, barycenter is low, high-speed cutting is bored the rotary motive power head and is required the dynamic equilibrium characteristic good, and gear range is big, but existing universal speed reducer radial dimension is big, do not satisfy instructions for use, movable teeth reducer is a tooth difference eccentric wheel structure, and the dynamic equilibrium characteristic is poor, and the rotary motive power head needs specialized designs.The present invention is a high-order elliptic surface end face decelerating movable teeth rig rotary motive power head, the axle of reducer is gone into movement parts such as axle and is self-balancing, can realize the speed change gear of optional tooth number difference, use the rig rotary motive power head of this reducer, easy accessibility, transfer torque is big, radial dimension is little, the rock drilling machinery of suitable heavy load.

The utility model content

At the problem of above-mentioned existence, the utility model provides a kind of high-order elliptic surface end face decelerating movable teeth rig rotary motive power head.

The technical solution of the utility model is: a kind of high-order elliptic surface end face decelerating movable teeth rig rotary motive power head, comprise motor, terminal pad, bearing A, bolt, oscillating tooth, base, bearing B, bearing C, air chamber, sealing A, output shaft, sealing B, cover, alignment pin, fixed annulus, bearings D, power shaft, it is characterized in that: the groove flank of tooth on the power shaft, the pitch curve of the fixed annulus groove flank of tooth is the high-order elliptic curve, actual tooth profile curve is the equidistant curve of theoretic profile, the groove flank of tooth on the power shaft, the groove flank of tooth of fixed annulus is to slot on the disk end face, oscillating tooth, fixed annulus, the flank of tooth on the power shaft, the uniform groove of output shaft constitutes the decelerating movable teeth device of optional tooth number difference, output shaft is by bearing B, bearing C is bearing on the base, air inlet is arranged on the air chamber, air chamber is fixed on the base, sealing A and B and air chamber, output shaft cooperates, radial hole communicates with air chamber on the output shaft, internal thread hole is arranged on the output shaft, the flank of tooth on oscillating tooth and the fixed annulus, the flank of tooth on the power shaft and the contact of the groove on the output shaft, power shaft is bearing on the terminal pad by bearing A, be bearing on the output shaft by bearings D, terminal pad, fixed annulus is located the back by being bolted on the base by alignment pin, motor is fixed on the terminal pad, axle on the motor connects with power shaft, overlap be bearing on the output shaft and with bearing B, bearing C contact.

Theoretic profile curve A on the described power shaft, fixed annulus theoretic profile curve B are respectively:

In the formula, e is oval eccentricity, and oval major semiaxis is a,

θ is that the angle becomes parameter, n ₁The number of teeth that cogs for power shaft is n ₁(n ₁〉=1 integer), the number of teeth of fixed annulus is z _k, the teeth groove number of output shaft 11 is z _g(z _g=z _k± n ₁), the gearratio of speed changer then

Theoretic profile curve A on the described power shaft, fixed annulus theoretic profile curve B can also for:

Described power shaft is coaxial with the output shaft center line.

The outer bearing of can adorning of oscillating tooth contacts with the flank of tooth, the uniform groove face of output shaft on fixed annulus, the power shaft again in the described decelerating movable teeth device.

Advantage of the present utility model: the deficiency that has overcome existing reducer and rotary motive power head, high-order elliptic surface end face decelerating movable teeth device and use the rig rotary motive power head of this reducer, for reducer provides a kind of new universal serial kind, for rig provides a kind of easy accessibility, transfer torque is big, radial dimension is little, the rock drilling machinery rotary motive power head of suitable heavy load.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is an output shaft schematic diagram of the present utility model

Fig. 3 is a fixed annulus schematic diagram of the present utility model

Fig. 4 is a power shaft schematic diagram of the present utility model

Fig. 5 is a cylindrical oscillating tooth schematic diagram of the present utility model

The specific embodiment

Now in conjunction with the accompanying drawings, the utility model is further specified.

As Fig. 1,2,3,4, shown in 5, the groove flank of tooth on the power shaft 18, the pitch curve of the fixed annulus 16 groove flank of tooth is the high-order elliptic curve, actual tooth profile curve is the equidistant curve of theoretic profile, the groove flank of tooth on the power shaft 18, the groove flank of tooth of fixed annulus 16 is to slot on the disk end face, oscillating tooth 5, fixed annulus 16, the flank of tooth on the power shaft 18, the uniform groove of output shaft 11 constitutes the decelerating movable teeth device of optional tooth number difference, output shaft 11 is by bearing B7, bearing C8 is bearing on the base 6, on the air chamber 9 air inlet is arranged, air chamber 9 is fixed on the base 6, sealing A10 and B12 and air chamber 9, output shaft 11 cooperates, radial hole communicates with air chamber 9 on the output shaft 11, on the output shaft 11 internal thread hole is arranged, the flank of tooth on oscillating tooth 5 and the fixed annulus 16, groove contact on the flank of tooth on the power shaft 18 and the output shaft 11, power shaft 18 is bearing on the terminal pad 2 by bearing A3, be bearing on the output shaft 11 by bearings D 17, terminal pad 2, fixed annulus 16 is logical decide alignment pin 15 and to locate and be fixed on the base 6 by bolt 4, motor 1 is fixed on the terminal pad 2, axle on the motor 1 connects with power shaft 18, overlap 13 be bearing on the output shaft 11 and with bearing B7, bearing C8 contact.

In order better to understand high-order elliptic curve (also being the ovum circular curve), now further specify as follows:

If oval major semiaxis is a, minor axis is b, oval eccentricity Order

With the corresponding polar angle θ of moving point that on ellipse, moves ₁Be parameter, then Tuo Yuan polar equation is Oval polar angle is dwindled n ₁(n ₁〉=1), keeps radius vector r ₁Constant, be the ovum circular curve then by original oval curve of deriving, its polar equation can be written as:

If gear 2 and gear 1 engagement, the polar equation that can be tried to achieve the pitch curve of gear 2 by the theory of engagement is: $r_2=\frac{p_2}{1+e_2{\cos n}_2{\mathrm{\θ}}_2},$ $p_2=\frac{n^2{p}_1}{\sqrt{n^2-e_1^2(n^2-1)}},$ $e_2=\frac{e_1}{\sqrt{n^2-e_1^2(n^2-1)}}$

${\mathrm{\θ}}_2=\frac{2}{n_2}\arctan \left(\sqrt{\frac{d-p_1+{\mathrm{de}}_1}{d-p_1-{\mathrm{de}}_1}}\tan \frac{n_1{\mathrm{\θ}}_1}{2}\right),$ $d=a(1+\sqrt{n^2-e_1^2(n^2-1)}),$ $n=\frac{n_2}{n_1}(n_2>1).$

If n ₁=1, n ₂=2, then the pitch curve of gear 1 is oval, and the pitch curve of gear 2 is the second order ellipse; If n ₁=1, n ₂=3, then the pitch curve of gear 2 is three rank ellipses; If n ₁=3, then the pitch curve of gear 1 is three rank ellipses; If n ₁=3, n ₂=3, then the pitch curve of gear 1, gear 2 is three rank ellipses; If n ₁=3, n ₂=3,4,5,7 ..., then the gear 1 pitch curve pitch curve that is three rank ellipses, gear 2 is 3,4,5,7 ... the rank ellipse.

If the number of teeth that power shaft cogs (wave number of ovum circular curve) is n ₁(n ₁〉=1), the number of teeth of oscillating tooth internal gear (fixed annulus) is z _k, the teeth groove number of output shaft is z _g(z _g=z _k± n ₁), the gearratio of speed changer then

And z _g＞z _kThe time output shaft and power shaft move otherwise counter motion in the same way.The power shaft theoretic profile curve that cogs

Or its equidistant curve, the theoretic profile curve of fixed annulus

Or its equidistant curve.The theoretic profile curve if power shaft cogs

Or its equidistant curve, then the theoretic profile curve of fixed annulus Or its equidistant curve.

The utility model is a high-order elliptic surface end face decelerating movable teeth rig rotary motive power head.The theoretic profile curve of fixed annulus and the power shaft theoretic profile curve that cogs is the high-order elliptic curve.Actual tooth profile curve is the equidistant curve of a theoretical tooth curve.Fig. 1 is a=70 to reducer shown in Figure 5, e=0.1, and zg=9, zk=6, N1=3, oscillating tooth diameter are 15mm, and the theoretic profile curve of its power shaft, internal gear theoretic profile curve are respectively

Claims (5)

1. high-order elliptic surface end face decelerating movable teeth rig rotary motive power head, comprise motor (1), terminal pad (2), bearing A (3), bolt (4), oscillating tooth (5), base (6), bearing B (7), bearing C (8), air chamber (9), sealing A (10), output shaft (11), sealing B (12), cover (13), alignment pin (15), fixed annulus (16), bearings D (17), power shaft (18), it is characterized in that: the groove flank of tooth on the power shaft (18), the pitch curve of fixed annulus (16) the groove flank of tooth is the high-order elliptic curve, actual tooth profile curve is the equidistant curve of theoretic profile, the groove flank of tooth on the power shaft (18), the groove flank of tooth of fixed annulus (16) is to slot on the disk end face, oscillating tooth (5), fixed annulus (16), the flank of tooth on the power shaft (18), the uniform groove of output shaft (11) constitutes the decelerating movable teeth device of optional tooth number difference, output shaft (11) is by bearing B (7), bearing C (8) is bearing on the base (6), air chamber has air inlet on (9), air chamber (9) is fixed on the base (6), sealing A (10) and B (12) and air chamber (9), output shaft (11) cooperates, output shaft (11) is gone up radial hole and is communicated with air chamber (9), output shaft has internal thread hole on (11), the flank of tooth on oscillating tooth (5) and the fixed annulus (16), groove contact on the flank of tooth on the power shaft (18) and the output shaft (11), power shaft (18) is bearing on the terminal pad (2) by bearing A (3), be bearing on the output shaft (11) by bearings D (17), terminal pad (2), fixed annulus (16) is fixed on the base (6) by bolt (4) by back, alignment pin (15) location, motor (1) is fixed on the terminal pad (2), axle on the motor (1) connects with power shaft (18), overlap (13) be bearing on the output shaft (11) and with bearing B (7), bearing C (8) contact.

2. a kind of high-order elliptic surface end face decelerating movable teeth rig rotary motive power head according to claim 1, it is characterized in that: the theoretic profile curve A on the described power shaft (18), fixed annulus (16) theoretic profile curve B are respectively:

In the formula, e is oval eccentricity, and oval major semiaxis is a,

θ is that the angle becomes parameter, n ₁The number of teeth that cogs for power shaft (18) is n ₁(n ₁〉=1 integer), the number of teeth of fixed annulus (16) is z _k, the teeth groove number of output shaft (11) is z _g(z _g=z _k± n ₁), the gearratio of speed changer then

3. a kind of high-order elliptic surface end face decelerating movable teeth rig rotary motive power head according to claim 1 and 2 is characterized in that: the theoretic profile curve A on the described power shaft (18), fixed annulus (16) theoretic profile curve B can also for:

4. a kind of high-order elliptic surface end face decelerating movable teeth rig rotary motive power head according to claim 1, it is characterized in that: described power shaft (18) is coaxial with output shaft (11) center line.

5. a kind of high-order elliptic surface end face decelerating movable teeth rig rotary motive power head according to claim 1 is characterized in that: the outer bearing of can adorning of oscillating tooth (5) contacts with the flank of tooth, the uniform groove face of output shaft (11) on fixed annulus (16), the power shaft (18) again in the described decelerating movable teeth device.

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