CN201738803U - Drilling machine rotary power head adopting high-level elliptic surface movable teeth speed changing device - Google Patents

Abstract

The utility model discloses a drilling machine rotary power head adopting a high-level elliptic surface movable teeth speed changing device. A universal rotary motor is adopted as power, the teeth surface on an input shaft and the teeth surface of a fixed inner gear are both equidistance curves of high-level elliptic curves; cylindrical movable teeth slide and roll in uniformly-distributed grooves of an output shaft, and are contacted with the teeth surface of the input shaft and the teeth surface of the fixing inner gear so as to slide and roll; the uniform distribution grooves of the teeth surface on the input shaft, the teeth surface of the fixing inner gear, the movable teeth and the output shaft form a movable teeth speed changing device; the fixing inner gear is fixedly connected with an engine base, the input shaft and the output shaft are coaxial, the output shaft is supported on the engine base by bearings, an auxiliary transmission round disk is supported on the input shaft by bearings, the input shaft is supported on the output shaft and the engine base by bearings, and the output shaft is provided with a hole communicated with an air chamber fixed on the engine base. The drilling machine rotary power head has the following advantages: the input shaft and other moving pieces are all self-balance, the speed changing device with any teeth number difference is realized, the drilling machine rotary power head is convenient for disassembly, has large transmission torque and small radial dimension and is suitable for the heavy-load rock drilling machinery.

Description

A kind of rig rotary motive power head that adopts high-order elliptic surface oscillating tooth speed change gear

Technical field

The utility model relates to high-order elliptic surface oscillating tooth speed change gear and uses the rig rotary motive power head of this device, belongs to gearing and rock drilling machinery apparatus field.

Background technology

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 speed change gear 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 oscillating tooth speed change gear, the axle of speed changer is gone into movement parts such as axle and is self-balancing, can realize the speed change gear of optional tooth number difference, uses the rig rotary motive power head of this device, easy accessibility, transfer torque is big, radial dimension is little, the rock drilling machinery of suitable heavy load.

The utility model content

In order to overcome the deficiency that above-mentioned technology exists, technical problem to be solved in the utility model provides a kind of rig rotary motive power head that adopts high-order elliptic surface oscillating tooth speed change gear, the axle of speed changer is gone into movement parts such as axle and is self-balancing, can realize the speed change gear of optional tooth number difference, rig rotary motive power head easy accessibility, the rock drilling machinery of big, the suitable heavy load of transfer torque.

The technical solution of the utility model is: a kind of rig rotary motive power head that adopts high-order elliptic surface oscillating tooth speed change gear, comprise output shaft, air chamber, sealing A, bearing A, bearing B, fixed annulus, the accessory drive disk, terminal pad, power shaft, motor, bearing C, bearings D, bearing E, oscillating tooth, alignment pin, base, cover, sealing B, it is characterized in that: the flank of tooth on the power shaft, the pitch curve of the fixed annulus flank of tooth is the equidistant curve of high-order elliptic curve or high-order elliptic curve, actual tooth profile curve is the equidistant curve of theoretic profile, oscillating tooth, fixed annulus, the flank of tooth on the power shaft, the uniform groove of output shaft constitutes the oscillating tooth speed change gear of optional tooth number difference, output shaft is by bearing A, bearing B is bearing on the base, air inlet is arranged on the air chamber, air chamber is fixed on the base, sealing A and sealing 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 groove size of accessory drive disk and the groove of output shaft are measure-alike, the accessory drive disk is bearing on the power shaft by bearings D, the flank of tooth on oscillating tooth and the fixed annulus, the flank of tooth on the power shaft, groove contact on accessory drive disk and the output shaft, power shaft is bearing in terminal pad by bearing C, be bearing on the power shaft by bearing E, terminal pad, the logical alignment pin positioning and fixing of fixed annulus is on base, 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 A, bearing B contact.

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

Or its equidistant curve; B:

Or its equidistant curve.

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 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 be A:

Or its equidistant curve; B: Or its equidistant curve.

Described oscillating tooth speed change gear adopt a slice fixed annulus respectively with two accessory drive disks and output shaft on the corresponding symmetric arrangement structure of groove.

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 oscillating tooth speed change gear.

The utility model has the advantages that: the deficiency that has overcome existing reducer and rotary motive power head, invention high-order elliptic surface oscillating tooth speed change gear and use the rig rotary motive power head of this device, for reducer provides a kind of general series, 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 an accessory drive disk schematic diagram of the present utility model

Fig. 5 is a power shaft schematic diagram of the present utility model

Fig. 6 is a cylindrical oscillating tooth schematic diagram of the present utility model

The specific embodiment

Now in conjunction with the accompanying drawings, technology contents of the present utility model is described further.

At Fig. 1,2,3,4, in 5 and 6, the flank of tooth on the power shaft 9, the pitch curve of fixed annulus 6 flank of tooth is the equidistant curve of high-order elliptic curve or high-order elliptic curve, actual tooth profile curve is the equidistant curve of theoretic profile, oscillating tooth 14, fixed annulus 6, the flank of tooth on the power shaft 9, the uniform groove of output shaft 1 constitutes the oscillating tooth speed change gear of optional tooth number difference, output shaft 1 is by bearing A 4, bearing B 5 is bearing on the base 16, on the air chamber 2 air inlet is arranged, air chamber 2 is fixed on the base 16, sealing A3 and sealing B18 and air chamber 2, output shaft 1 cooperates, radial hole communicates with air chamber 2 on the output shaft 1, on the output shaft 1 internal thread hole is arranged, the groove size of accessory drive disk 7 and the groove of output shaft 1 are measure-alike, accessory drive disk 7 is bearing on the power shaft 9 by bearings D 12, the flank of tooth on oscillating tooth 14 and the fixed annulus 6, the flank of tooth on the power shaft 9, groove contact on accessory drive disk 7 and the output shaft 1, power shaft 9 is bearing in terminal pad 8 by bearing C11, be bearing on the power shaft 9 by bearing E13, terminal pad 8, fixed annulus 6 logical alignment pin 15 positioning and fixing are on base 16, motor 10 is fixed on the terminal pad 8, axle on the motor 10 connects with power shaft 9, overlap 17 be bearing on the output shaft 1 and with bearing A4, bearing B5 contact.

In order better to understand high-order elliptic curve (also being the ovum circular curve), 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 the rig rotary motive power head that adopts high-order elliptic surface oscillating tooth speed change gear, the theoretic profile curve of fixed annulus and the power shaft theoretic profile curve that cogs is the equidistant curve of high-order elliptic curve and high-order elliptic curve, and actual tooth profile curve is the equidistant curve of a theoretical tooth curve.Fig. 1 is a=70 to reducer shown in Figure 6, e=0.1, 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. rig rotary motive power head that adopts high-order elliptic surface oscillating tooth speed change gear, comprise output shaft (1), air chamber (2), sealing A (3), bearing A (4), bearing B (5), fixed annulus (6), accessory drive disk (7), terminal pad (8), power shaft (9), motor (10), bearing C (11), bearings D (12), bearing E (13), oscillating tooth (14), alignment pin (15), base (16), cover (17), sealing B (18), it is characterized in that: the flank of tooth on the power shaft (9), the pitch curve of fixed annulus (6) flank of tooth is the equidistant curve of high-order elliptic curve or high-order elliptic curve, actual tooth profile curve is the equidistant curve of theoretic profile, oscillating tooth (14), fixed annulus (6), the flank of tooth on the power shaft (9), the uniform groove of output shaft (1) constitutes the oscillating tooth speed change gear of optional tooth number difference, output shaft (1) is by bearing A (4), bearing B (5) is bearing on the base (16), air chamber has air inlet on (2), air chamber (2) is fixed on the base (16), sealing A (3) and sealing B (18) and air chamber (2), output shaft (1) cooperates, output shaft (1) is gone up radial hole and is communicated with air chamber (2), output shaft has internal thread hole on (1), the groove of the groove size of accessory drive disk (7) and output shaft (1) is measure-alike, accessory drive disk (7) is bearing on the power shaft (9) by bearings D (12), the flank of tooth on oscillating tooth (14) and the fixed annulus (6), the flank of tooth on the power shaft (9), groove contact on accessory drive disk (7) and the output shaft (1), power shaft (9) is bearing in terminal pad (8) by bearing C (11), be bearing on the power shaft (9) by bearing E (13), terminal pad (8), logical alignment pin (15) positioning and fixing of fixed annulus (6) is on base (16), motor (10) is fixed on the terminal pad (8), axle on the motor (10) connects with power shaft (9), overlap (17) be bearing on the output shaft (1) and with bearing A (4), bearing B (5) contact.

2. a kind of rig rotary motive power head that adopts high-order elliptic surface oscillating tooth speed change gear according to claim 1 is characterized in that: the theoretic profile curve A on the described power shaft (9), fixed annulus (6) theoretic profile curve B are respectively:

Or its equidistant curve;

Or its equidistant curve; 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 (9) is n ₁(n ₁〉=1 integer), the number of teeth of fixed annulus (6) is z _k, the teeth groove number of output shaft (1) is z _g(z _g=z _k± n ₁), the gearratio of speed changer then

3. a kind of rig rotary motive power head that adopts high-order elliptic surface oscillating tooth speed change gear according to claim 1 and 2 is characterized in that: the theoretic profile curve A on the described power shaft (9), fixed annulus (6) theoretic profile curve B can also for: Or its equidistant curve;

Or its equidistant curve.

4. a kind of rig rotary motive power head that adopts high-order elliptic surface oscillating tooth speed change gear according to claim 1 is characterized in that: described oscillating tooth speed change gear adopt a slice fixed annulus (6) respectively with two accessory drive disks (7) and output shaft (1) on the corresponding symmetric arrangement structure of groove.

5. a kind of rig rotary motive power head that adopts high-order elliptic surface oscillating tooth speed change gear according to claim 1 is characterized in that: the outer bearing of can adorning of oscillating tooth (14) contacts with the flank of tooth, the uniform groove face of output shaft (1) on fixed annulus (6), the power shaft (9) again in the described oscillating tooth speed change gear.

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