CN113819193A

CN113819193A - Ball cambered surface worm speed reducer

Info

Publication number: CN113819193A
Application number: CN202010567534.8A
Authority: CN
Inventors: 张德明
Original assignee: Shanghai Lianzi Energy Technology Co ltd
Current assignee: Shanghai Lianzi Energy Technology Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-12-21

Abstract

The invention provides a ball cambered surface worm speed reducer, comprising: casing, worm wheel and worm, the inside one side cover of casing is equipped with the worm, and the worm freely rotates in the casing is inside, worm one side is equipped with the worm wheel, the worm wheel cover is established in the inside of casing, at the inside free rotation of casing. According to the ball cambered surface worm speed reducer provided by the invention, the balls, the worm and the worm wheel are all made of high-strength wear-resistant materials and are rigid, the transmission strength and the rigidity are higher than those of the traditional speed reducer, the ball structure is adopted, a rolling friction transmission mode is used, the mechanical efficiency is improved, the ball structure can bear higher input rotating speed, the application occasions are wider, the size of the speed reducer can be reduced by adopting the ball structure, because the two first guide pipes, the second guide pipe and the thread tooth grooves on the outer surface of the worm form a semi-open loop with the worm wheel, the number of the heads of the worm is the number of the loops, the ball cambered surface worm speed reducer can be suitable for different scenes of a single-head worm and a multi-head worm, and the application is wider.

Description

Ball cambered surface worm speed reducer

Technical Field

The invention relates to the field of speed reducers, in particular to a ball cambered surface worm speed reducer.

Background

The reducer is an independent part consisting of gear drive, worm drive and gear-worm drive which are enclosed in a rigid casing and is commonly used as a speed reduction transmission device between a prime mover and a working machine. The function of matching the rotation speed and transmitting the torque between the prime mover and the working machine or the actuating mechanism is very extensive in modern machinery. The speed reducer is generally used for low-speed and large-torque transmission equipment, and the purpose of reducing speed is achieved by meshing a motor, an internal combustion engine or other high-speed running power with a large gear on an output shaft through a gear with a small number of teeth on an input shaft of the speed reducer.

The speed reducer in the prior art has the problems of insufficient transmission strength and rigidity, low transmission efficiency, overlarge equipment and the like.

Therefore, the prior art has yet to be developed.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a ball-cambered surface worm reducer for solving the problems of the prior art.

To achieve the above and other related objects, the present invention provides a ball-cambered surface worm reducer, comprising: the worm gear comprises a shell, a worm wheel and a worm, wherein one side in the shell is sleeved with the worm, the worm freely rotates in the shell, the front section of the worm is provided with a groove, the outer surface of the middle section of the worm is provided with thread teeth, the middle section of the worm is provided with a blind hole sunken towards the front section of the worm, the blind hole is internally provided with a second conduit, two conduit holes used for placing first conduits are formed from two ends of the second conduit to the outer surface of the middle section of the worm, openings of the two conduit holes on the outer surface of the worm are positioned on tooth grooves of the thread teeth, the two first conduits are placed in the two conduit holes, one end of each of the two first conduits is provided with a bypass hole, the bypass hole is connected with the opening of the second conduit, a passage is formed between the two first conduits and the second conduit, a plurality of balls are arranged in the thread teeth, the second first conduit and the two first conduits, one side of the worm is provided with the worm wheel, the worm gear is sleeved in the shell and freely rotates in the shell.

In an embodiment of the present invention, the worm is a single-headed worm, and the single-headed worm is provided with a blind hole, and a second conduit and two first conduits are correspondingly disposed on the blind hole.

In an embodiment of the present invention, the worm is a multi-head worm, the multi-head worm is provided with a plurality of blind holes, central axes of the blind holes are symmetrically distributed, centers of circles corresponding to the blind holes are located on the same circle and are uniformly distributed on the circle, the number of the blind holes is the same as that of the heads of the worm, and each blind hole is correspondingly provided with one second conduit and two first conduits. In an embodiment of the present invention, a casing and a cover are respectively disposed at two ends of the worm, a fourth bearing is disposed between the casing and the worm, and a third bearing and a third oil seal are disposed between the worm and the cover.

In an embodiment of the invention, the cover is connected to the housing by screws.

In an embodiment of the present invention, a first bearing, a first oil seal, a second bearing, and a second oil seal are respectively disposed between two ends of the worm wheel and the housing.

In an embodiment of the invention, a plug is disposed at a position of the lower surface of the housing corresponding to the worm wheel.

In an embodiment of the present invention, the casing includes an upper casing and a lower casing, the upper casing and the lower casing are fixedly connected by a screw, and a joint of the upper casing and the lower casing is further provided with a spring pin.

As described above, the ball arc surface worm speed reducer of the present invention has the following beneficial effects: according to the multi-head worm ball and the speed reducer, the ball, the worm and the worm wheel are all made of high-strength wear-resistant materials and are rigid, the transmission strength and the rigidity are higher than those of the traditional speed reducer, the ball structure is adopted, a rolling friction transmission mode is used, the mechanical efficiency is improved, the ball structure can bear higher input rotating speed, the application occasions are wider, the size of the speed reducer can be reduced by adopting the ball structure, because the two first guide pipes, the second guide pipes and the thread tooth grooves on the outer surface of the worm form a semi-open loop with the worm wheel, the number of heads of the worm is the number of loops, the multi-head worm ball and the speed reducer can be applied to different scenes of a single-head worm and a multi-head worm, and the application is wider.

Drawings

Fig. 1 is a schematic front view of a ball-arc worm reducer disclosed in an embodiment of the present invention.

Fig. 2 is a schematic side view of a ball-cambered surface worm reducer disclosed in the embodiment of the present invention.

Fig. 3 is a perspective view of a ball-cambered surface worm speed reducer disclosed in the embodiment of the present invention.

Fig. 4 is a sectional view taken along line a-a of a ball-cambered surface worm reducer according to an embodiment of the present invention.

Fig. 5 is a B-B sectional view of a ball-cambered surface worm reducer disclosed in the embodiment of the present invention.

Fig. 6 is a schematic front view illustrating a worm of the ball-arc worm reducer according to the embodiment of the present invention.

Fig. 7 is a sectional view taken along the line a-a of a worm of the ball-arc worm reducer according to the embodiment of the present invention.

Fig. 8 is a schematic perspective view of a double-headed worm used in the ball-arc-surface worm speed reducer disclosed in the embodiment of the invention.

Description of the element reference numerals

1 case

2 Worm

3 worm wheel

4 second conduit

5 first conduit

6 ball

7 machine cover

8 plug

11 Upper casing

12 lower case

13 spring pin

21 first bearing

22 second bearing

23 third bearing

24 fourth bearing

31 first oil seal

32 second oil seal

33 third oil seal

9 Blind hole

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 7. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1 to 7, the present invention provides a ball-rolling arc worm reducer, including: the worm gear comprises a machine shell 1, a worm wheel 3 and a worm 2, wherein one side in the machine shell 1 is sleeved with the worm 2, the worm 2 freely rotates in the machine shell 1, the front section of the worm 2 is provided with a groove, the outer surface of the middle section of the worm 2 is provided with thread teeth, the middle section of the worm 2 is provided with a blind hole 9 sunken towards the front section of the worm 2, the blind hole 9 is internally provided with a second conduit 4, two conduit holes used for placing first conduits 5 are formed from two ends of the second conduit 4 to the outer surface of the middle section of the worm 2, openings of the two conduit holes on the outer surface of the worm 2 are positioned on tooth spaces of the thread teeth, the two first conduits 5 are placed in the two conduit holes, one ends of the two first conduits 5 are respectively provided with a bypass hole, the bypass holes are connected with the openings of the second conduit 4, a passage is formed between the two first conduits 5 and the second conduit 4, and a plurality of balls 6 are arranged in the thread teeth in the middle section of the worm 2, the second conduit 4 and the two first conduits 5, one side of the worm 2 is provided with a worm wheel 3, the worm wheel 3 is sleeved in the casing 1 and freely rotates in the casing 1.

Specifically, the worm 2 is a single-head worm, a blind hole 9 is formed in the single-head worm, and a second conduit 4 and two first conduits 5 are correspondingly arranged on the single-head worm.

Specifically, the worm 2 is a multi-head worm, a plurality of blind holes 9 are formed in the multi-head worm, central axes of the blind holes 9 are symmetrically distributed, the circle center corresponding to each blind hole 9 is located on the same circle and evenly distributed on the circle, the number of the blind holes 9 is the same as that of the worm heads, and each blind hole 9 is correspondingly provided with one second guide pipe 4 and two first guide pipes 5. Specifically, the both ends of worm 2 are casing 1 and cover 7 respectively, be equipped with fourth bearing 24 between casing 1 and the worm 2, be equipped with third bearing 23 and third oil blanket 33 between worm 2 and the cover 7.

Specifically, the cover 7 is connected to the housing 1 by screws.

Specifically, a first bearing 21, a first oil seal 31, a second bearing 22 and a second oil seal 32 are respectively arranged between the two ends of the worm wheel 3 and the casing 1.

Specifically, a plug 8 is arranged at a position of the lower surface of the casing 1 corresponding to the worm wheel 3.

Specifically, the casing 1 includes an upper casing 11 and a lower casing 12, the upper casing 11 is fixedly connected to the lower casing 12 through screws, and a spring pin 13 is further disposed at a connection position of the upper casing 11 and the lower casing 12.

The single-head worm is provided with two first guide pipes 5 and a second guide pipe 4, wherein a semi-open loop is formed among the two first guide pipes 5, the second guide pipe 4, the tooth-shaped groove of the worm 2 and the worm wheel 3, a plurality of loops are formed in the multi-head worm by adopting the configuration of a plurality of single-head worms, and the ball 6 of each loop can roll back and forth in the loop in which the loop is positioned, so that the high-speed running of the ball 6 is realized.

When the invention is installed, the second conduit 4 is firstly installed in the blind hole 9, then the two first conduits 5 are placed in the conduit holes, the first conduits 5 are provided with bypass holes, the bypass holes of the two first conduits 5 are communicated with the blind hole 9, because the openings of the two conduit holes on the outer surface of the worm 2 are positioned on the tooth spaces of the thread teeth and are screwed and fixed on the worm 2 by screws, a calculated number of balls 6 are installed in the second conduits 4 and the first conduits 5, if the worm is a multi-head worm, a plurality of second conduits 4 and a plurality of first conduits 5 also adopt the same matching installation mode, the fourth bearing 24 is installed in the machine shell 1, then the installed worm 2 is placed in the machine shell 1, the third bearing 23 is installed at the front end of the worm 2, the third oil seal 33 is installed at the front end of the third bearing 23, then the balls 6 are installed in the tooth spaces of the worm 2, the worm 2 rotates, putting the ball 6 into the machine, filling the tooth space of the thread teeth with the rotation of the worm 2 by the ball 6, fixing the front end of the worm 2 by a cover 7 through screws and sealant, installing a second bearing 22 and a second oil seal 32 at one end of the worm wheel 3, installing a first bearing 21 and a first oil seal 31 at the other end of the worm wheel 3, putting the installed worm wheel 3 into the machine shell, installing the plug 8, fixing the upper machine shell 11 and the lower machine shell 12, installing the upper machine shell 11 and the lower machine shell 12 through screws, and installing the elastic pin 13.

During specific implementation, the groove at the front section of the worm 2 is connected with the input shaft, the input shaft drives the worm 2 to rotate, when the worm 2 rotates, the ball 6 rolls among the tooth socket of the thread teeth, the first guide pipe 5, the second guide pipe 4 and the worm wheel 3 to form a semi-open complete loop, and the multi-start worm forms a plurality of semi-open complete loops and drives the worm wheel 3 to rotate.

In summary, according to the multi-head worm ball and speed reducer provided by the invention, the ball, the worm and the worm wheel are all made of high-strength wear-resistant materials and are rigid, the transmission strength and the rigidity are higher than those of the traditional speed reducer, the ball structure is adopted, the rolling friction transmission mode is used, the mechanical efficiency is improved, the ball structure can bear higher input rotating speed, the application occasions are wider, the size of the speed reducer can be reduced by adopting the ball structure, because the two first guide pipes, the second guide pipe and the thread tooth grooves on the outer surface of the worm form a semi-open loop with the worm wheel, the number of heads of the worm is the number of loops, the multi-head worm ball and speed reducer can be applied to different scenes of a single-head worm and a multi-head worm, and the application is wider.

Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A ball-cambered surface worm reducer comprising: the worm gear type worm gear comprises a machine shell (1), a worm wheel (3) and a worm (2), and is characterized in that one side in the machine shell (1) is sleeved with the worm (2), the worm (2) freely rotates in the machine shell (1), the front section of the worm (2) is provided with a groove, the outer surface of the middle section of the worm (2) is provided with thread teeth, the middle section of the worm (2) is provided with a plurality of blind holes (9) sunken towards the front section of the worm (2), each blind hole (9) is internally provided with a second conduit (4), two conduit holes used for placing first conduits (5) are formed from two ends of the second conduit (4) to the outer surface of the middle section of the worm (2), openings of the two conduit holes on the outer surface of the worm (2) are positioned on tooth grooves of the thread teeth, the two first conduits (5) are placed in the two conduit holes, one end of the two first conduits (5) is provided with a bypass hole, and the bypass hole is connected with the opening of the second conduit (4), form the route between two first pipes (5) and second pipe (4), all be equipped with a plurality of balls (6) in the thread tooth of worm (2) middle section, second pipe and two first pipes, worm (2) one side is equipped with worm wheel (3), the inside at casing (1) is established in worm wheel (3) cover, at the inside free rotation of casing (1).

2. The ball-bearing cambered surface worm speed reducer of claim 1, characterized in that: the worm (2) is a single-head worm, a blind hole (9) is formed in the single-head worm, and a second guide pipe (4) and two first guide pipes (5) are correspondingly arranged.

3. The ball-bearing cambered surface worm speed reducer of claim 1, characterized in that: the worm (2) is a multi-head worm, a plurality of blind holes (9) are formed in the multi-head worm, central shafts of the blind holes (9) are symmetrically distributed, the circle center corresponding to each blind hole (9) is located on the same circle and evenly distributed on the circle, the number of the blind holes (9) is the same as the number of the worm heads, and each blind hole (9) is correspondingly provided with one second guide pipe (4) and two first guide pipes (5).

4. The ball-bearing cambered surface worm speed reducer of claim 1, characterized in that: casing (1) and cover (7) are respectively arranged at the both ends of worm (2), be equipped with fourth bearing (24) between casing (1) and worm (2), be equipped with third bearing (23) and third oil blanket (33) between worm (2) and cover (7).

5. The ball-bearing cambered surface worm speed reducer of claim 4, characterized in that: the cover (7) is connected with the shell (1) through screws.

6. The ball-bearing cambered surface worm speed reducer of claim 1, characterized in that: a first bearing (21), a first oil seal (31), a second bearing (22) and a second oil seal (32) are respectively arranged between the two ends of the worm wheel (3) and the shell (1).

7. The ball-bearing cambered surface worm speed reducer of claim 1, characterized in that: and a plug (8) is arranged at the position of the lower surface of the shell (1) corresponding to the worm wheel (3).

8. The ball-bearing cambered surface worm speed reducer of claim 1, characterized in that: the casing (1) comprises an upper casing (11) and a lower casing (12), the upper casing (11) is fixedly connected with the lower casing (12) through screws, and an elastic pin (13) is further arranged at the joint of the upper casing (11) and the lower casing (12).