CN217603296U - Automatic speed change cam steel ball coaxial speed reducer - Google Patents
Automatic speed change cam steel ball coaxial speed reducer Download PDFInfo
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- CN217603296U CN217603296U CN202221772406.8U CN202221772406U CN217603296U CN 217603296 U CN217603296 U CN 217603296U CN 202221772406 U CN202221772406 U CN 202221772406U CN 217603296 U CN217603296 U CN 217603296U
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Abstract
The utility model discloses an automatic speed-changing cam steel ball coaxial reducer, which comprises a shell, an output shaft and an input cam shaft; an output shaft transparent cover and a fixed cam sleeve are arranged on the inner side of the shell, and a spring supporting cover is arranged at the rear end of the output shaft transparent cover; a variable speed turntable is axially and slidably arranged at the front end of the fixed cam sleeve, and a spring support transparent cover is in threaded connection with the front end of the variable speed turntable; a spring is sleeved on the output shaft between the spring support cover and the spring support transparent cover; a shell gear is fixed in the middle of the inner side of the shell, and an output shaft gear is arranged at the rear end close to the output shaft; a steel ball transmission mechanism is arranged at the rear part. The utility model discloses the structure adopts same axis transmission, and simple structure, small, light in weight, drive ratio scope are big, the transmission is steady, driving medium frictional force is little. The input camshaft and the output shaft can rotate in the same direction, and the rotation of the input camshaft is not limited in the reverse direction, so that the input camshaft can be applied to transmission devices such as screw pumps and hydraulic drilling tools.
Description
Technical Field
The utility model belongs to the technical field of the reduction gear, concretely relates to automatic coaxial reduction gear of variable speed cam steel ball.
Background
The speed reducer is a power transmission mechanism, can be divided into various gear speed reducers, worm and gear speed reducers, planetary gear speed reducers and the like according to transmission types, is relatively precise mechanical equipment, and is used for reducing the rotating speed and increasing the torque. The existing speed reducer equipment for underground operation of petroleum wells, such as a pipe column screwing machine, a screw pump, a hydraulic drilling tool, a back-off tool and the like, is influenced by the characteristics of working conditions, and the problems of complex structure, low working efficiency, high failure rate, size, weight, transmission ratio range and the like exist in the prior art no matter domestic or foreign.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatic coaxial reduction gear of variable speed cam steel ball to solve the problem among the prior art.
The utility model discloses a realize through following technical scheme: the utility model provides an automatic coaxial reduction gear of variable speed cam steel ball which characterized in that: the device comprises a shell, an output shaft and an input camshaft which are connected to the shell in a rotating mode, wherein the output shaft is coaxially matched with the input camshaft; an output shaft transparent cover and a fixed cam sleeve are respectively arranged at two ends of the inner side of the shell, and a spring supporting cover is arranged at the rear end of the output shaft transparent cover; a variable-speed turntable is axially arranged at the front end of the fixed cam sleeve in a sliding manner, and a spring support transparent cover is in threaded connection with the front end of the variable-speed turntable;
a spring is sleeved on the output shaft between the spring support cover and the spring support transparent cover;
a shell gear is fixed in the middle of the inner side of the shell, and an output shaft gear is arranged at the rear end close to the output shaft; the front end of the variable-speed turntable is provided with a variable-speed turntable gear I which can be meshed with the shell gear, and the rear end of the variable-speed turntable is provided with a variable-speed turntable gear II which can be meshed with the output shaft gear;
a speed change turntable steel column hole and a fixed cam sleeve steel column hole are correspondingly arranged on the speed change turntable and the fixed cam sleeve respectively, and a steel column is arranged in a cavity formed by matching the speed change turntable steel column hole and the fixed cam sleeve steel column hole;
the rear end of the output shaft is provided with a through hole, and a fixed cam sleeve ball socket and a camshaft ball socket for accommodating steel balls are respectively arranged on the opposite surfaces of the fixed cam sleeve and the input camshaft spacing hole.
And further: the output shaft transparent cover is fixed on the shell through bolts.
Further: the input camshaft is in screwed connection and matching with the shell through the input camshaft transparent cover and the bearing.
And further: the middle part of the front end of the input camshaft is inserted into the rear end of the output shaft and is matched with the output shaft through a bearing.
Further: a roller is arranged between the variable speed turntable and the fixed cam sleeve.
The utility model has the advantages that: the utility model discloses the structure is same axis transmission through input camshaft, steel ball, fixed cam, variable speed turntable gear, output shaft etc. simple structure, small, light in weight, drive ratio scope are big, the transmission is steady, driving medium frictional force is little. The input camshaft and the output shaft can rotate in the same direction, and the rotation of the input camshaft is not limited in the reverse direction, so that the input camshaft can be applied to transmission devices such as screw pumps and hydraulic drilling tools.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the structure of the deceleration state of the present invention;
FIG. 3 is a schematic diagram of the position of the steel ball according to the present invention;
fig. 4 is a schematic structural view of the fixed cam of the present invention;
fig. 5 is a schematic view of the cooperation between the fixed cam and the steel ball of the present invention.
The sequence numbers in the figures illustrate:
1 is an output shaft, 2 is an output shaft transparent cover, 3 is a bolt, 4 is a bearing, 5 is a spring support cover, 6 is a shell, 7 is a spring, 8 is a variable speed turntable, 9 is a steel column, 10 is a fixed cam sleeve, 11 is a steel ball, 12 is an input camshaft, 13 is an input camshaft transparent cover, 14 is a gasket, 15 is a bearing, 16 is a bearing, 17 is a bearing, 18 is a spring support transparent cover, and 19 is a roller;
the detailed description is given below.
As shown in fig. 1-5, the utility model discloses an automatic speed change cam steel ball coaxial reducer, its characterized in that: the device comprises a shell 6, an output shaft 1 and an input camshaft 12 which are connected to the shell in a screwing way, wherein the output shaft 1 and the input camshaft 12 are coaxially matched; an output shaft transparent cover 2 and a fixed cam sleeve 10 are respectively arranged at two ends of the inner side of the shell, and a spring support cover 5 is arranged at the rear end of the output shaft transparent cover 2; a variable speed turntable 8 is axially arranged at the front end of the fixed cam sleeve 10 in a sliding way, and a spring support transparent cover 18 is in threaded connection with the front end of the variable speed turntable 8;
a spring 7 is sleeved on the output shaft 1 between the spring support cover 5 and the spring support transparent cover 18;
a shell gear 6a is fixed in the middle of the inner side of the shell, and an output shaft gear 1a is arranged at the rear end close to the output shaft 1; the front end of the speed change turntable 8 is provided with a speed change turntable gear I8a which can be meshed and matched with the shell gear 6a, and the rear end is provided with a speed change turntable gear II8b which can be meshed and matched with the output shaft gear 1a;
a speed change turntable steel column hole 8c and a fixed cam sleeve steel column hole 10b are correspondingly arranged on the speed change turntable 8 and the fixed cam sleeve 10 respectively, and a steel column 9 is arranged in a cavity formed by matching the speed change turntable steel column hole 8c with the fixed cam sleeve steel column hole 10b;
a through hole is provided at the rear end of the output shaft 1, and a fixed cam bush socket 10a and a camshaft socket 12a for accommodating steel balls are provided on the surfaces of the fixed cam bush 10 and the input camshaft 12 facing each other across the through hole, respectively.
And further: the output shaft transparent cover 2 is fixed on the shell 6 through a bolt 3.
Further: the input camshaft 12 is screwed and matched with the shell through an input camshaft transparent cover 13 and a bearing 15.
Further: the middle part of the front end of the input camshaft 12 is inserted into the rear end of the output shaft 1 and is matched with the rear end of the output shaft through a bearing 17.
And further: a roller 9 is arranged between the speed change turntable 8 and the fixed cam sleeve 10.
The present solution is described in detail below with reference to the use and principles.
The output shaft 1 is provided with an output shaft gear 1a, and output shaft through holes 1b are uniformly distributed on the other end surface along the circumference; a shell gear 6a is arranged in an inner hole of the shell 6; one end face of the variable-speed turntable 8 is provided with a variable-speed turntable gear I8a, the other end face is provided with a variable-speed turntable gear II8b, and variable-speed turntable steel column holes 8c are uniformly distributed on the end face along the circumference; the end surface of the fixed cam sleeve 10 close to the output shaft 1 is circumferentially and uniformly provided with fixed cam sleeve ball sockets 10a, and the other end surface is circumferentially and uniformly provided with fixed cam sleeve steel column holes 10b; one end of the input camshaft 12 is provided with an input camshaft hole 12b, and the other end of the input camshaft 12 close to the end surface of the output shaft 1 is evenly provided with input camshaft ball sockets 12a along the circumference;
the output shaft 1 is an approximate T-shaped shaft, the rear end of the output shaft is in a circular plate shape, a hole is formed in the plate, a slot is formed in the middle of the rear end of the output shaft, and the slot is matched with a bulge at the front end of the input camshaft 12 to realize coaxial positioning; the front end of the input camshaft 12 is also in the shape of an approximate circular plate, and a ball socket is arranged on the plate and matched with the ball socket at the rear end of the fixed cam sleeve 10 to form a steel ball speed reducing mechanism.
An output shaft gear 1a is arranged on the output shaft 1, and output shaft through holes 1b are uniformly distributed on the other end surface along the circumference; a shell gear 6a is arranged in an inner hole of the shell 6; one end face of the variable-speed turntable 8 is provided with a variable-speed turntable gear I8a, the other end face is provided with a variable-speed turntable gear II8b, and variable-speed turntable steel column holes 8c are uniformly distributed on the end face along the circumference; the end surface of the fixed cam sleeve 10 close to the output shaft 1 is uniformly provided with fixed cam sleeve ball sockets 10a along the circumference, and the other end surface is uniformly provided with fixed cam sleeve steel column holes 10b along the circumference; one end of the input camshaft 12 is provided with an input camshaft hole 12b, and the other end of the input camshaft 12 close to the end surface of the output shaft 1 is evenly provided with input camshaft ball sockets 12a along the circumference; the steel column 9 is arranged in a steel column hole 8c of a variable speed turntable and a steel column hole 10b of a fixed cam sleeve, the spring 7 is arranged between a spring support cover 5 and a spring support transparent cover 18, the spring support transparent cover 18 is in threaded connection with the variable speed turntable 8 and is internally provided with a roller 9, an output shaft transparent cover 2 is connected with a shell 6 through a bolt 3, a bearing 4 is arranged in the output shaft transparent cover 2 and the spring support cover 5, an input camshaft transparent cover 13 is in threaded connection with the shell 6, a gasket 14 and a bearing 15 are arranged in the input camshaft transparent cover 13 and an input camshaft 12, the number and the positions of the output shaft through hole 1b, the fixed cam sleeve ball socket 10a and the input camshaft ball socket 12a correspond to those of the fixed cam sleeve ball socket 10a and the input camshaft ball socket 12a, the steel ball sockets 10a and the input camshaft ball socket 12a are larger than those of the fixed cam sleeve ball socket 11, so that the steel ball 11 can carry out self-adjusting and even load, and the transmission efficiency is ensured. The number of the steel balls 11 is one more than that of the cam teeth of the fixed cam sleeve 10, and the transmission ratio is determined by the number of the steel balls 11.
Referring to fig. 3, in the structure of the present invention, the cam of the input camshaft 12 may be a double convex line, a triple convex line, or a plurality of convex lines, the number of the steel balls 11 is one more than that of the cam of the fixed cam sleeve 10, when the input camshaft 12 rotates, the fixed cam sleeve 10 is stationary, the moving track of the steel ball 11 on the cam of the fixed cam sleeve 10 is longer than that of the steel ball 11 on the cam of the input camshaft 12, so as to realize the slow rotation of the input shaft 1 relative to the input camshaft 12, the output transmission ratio of the double convex line cam of the input camshaft 12 is the number of the steel balls 11 divided by two, the output transmission ratio of the triple convex line cam is the number of the steel balls 11 divided by three, and the output transmission ratio of the multi convex line cam is the number of the steel balls 11 divided by the number of the convex lines.
Referring to fig. 4 and 5, in the structure of the present invention, the fixed cam may be a linear concave type (a), a circular arc linear type (b), an involute type (c), a cycloid type (d), or a tooth shape with a central angle (e) inclined at an angle with a smaller angle to reduce friction.
The working process of the structure is as follows:
when the device is in no load, the shell 6 is fixed, the input camshaft 12 rotates forwards or reversely, under the action of the spring 7, the speed change turntable gear II is meshed with the output shaft gear 1a, the steel column 9 is arranged in a speed change turntable steel column hole 8c and a fixed cam sleeve steel column hole 10b, at the moment, the output shaft 1 and the fixed cam sleeve 10 are locked (synchronous rotation is realized because the speed change disc mounting gear 8b is meshed with the output shaft gear 1a on the output shaft, and the steel column 9 is arranged in the speed change turntable steel column hole 8c and the fixed cam sleeve steel column hole 10b, so that synchronous rotation of the speed change turntable and the fixed cam sleeve is realized, further synchronous rotation of the output shaft and the fixed cam is realized, and the output shaft 1 and the fixed cam sleeve 10 and the input camshaft 12 rotate in the same speed and the same direction; when the torque of the output shaft 1 is increased, the gear II8b of the speed changing turntable is separated from the gear 1a of the output shaft (when the torque is increased, the output shaft stops rotating relative to the input cam shaft, at this time, the input cam shaft drives the fixed cam sleeve to rotate under the action of the steel ball, the fixed cam sleeve and the speed changing turntable synchronously rotate under the action of the steel column, at this time, the gear 8b of the speed changing turntable is separated from the gear 1a of the output shaft, the speed changing turntable drives the spring to support the transparent cover compression spring, the spring 7 is compressed, the shell gear 6a is meshed with the gear I of the speed changing turntable, the steel column 9 is arranged in the steel column hole 8c of the speed changing turntable and the steel column hole 10b of the fixed cam sleeve (although the steel column is separated, the steel column cannot be separated, so as to play a circumferential limiting role, the steel column can only move relative to the axial direction and can not rotate relative to each other), at this time, the fixed cam sleeve 10 is fixed, the output shaft 1 rotates relative to the output shaft 1 at a low speed and rotates in the same direction as the input cam shaft 12, when the torque is reduced, the spring 7 returns to the speed changing turntable gear 8b is meshed with the gear 1, and the output shaft rotates in the same direction as the input cam sleeve 12.
To sum up, the utility model discloses the structure is same axis transmission through input camshaft, steel ball, fixed cam, gear change table gear, output shaft etc. and simple structure, small, light in weight, drive ratio scope are big, the transmission is steady, driving medium frictional force is little. The input camshaft and the output shaft of the structure can rotate in the same direction, the rotation of the input camshaft is not limited in the reverse direction, and the structure can be applied to transmission devices such as screw pumps, hydraulic drilling tools and the like.
Claims (5)
1. The utility model provides an automatic coaxial reduction gear of speed change cam steel ball which characterized in that: the camshaft adjuster comprises a shell (6), an output shaft (1) and an input camshaft (12) which are connected to the shell in a rotating mode, wherein the output shaft (1) and the input camshaft (12) are coaxially matched; an output shaft transparent cover (2) and a fixed cam sleeve (10) are respectively arranged at two ends of the inner side of the shell, and a spring support cover (5) is arranged at the rear end of the output shaft transparent cover (2); a variable speed turntable (8) is axially arranged at the front end of the fixed cam sleeve (10) in a sliding manner, and a spring support transparent cover (18) is in threaded connection with the front end of the variable speed turntable (8);
a spring (7) is sleeved on the output shaft (1) between the spring support cover (5) and the spring support transparent cover (18);
a shell gear (6 a) is fixed in the middle of the inner side of the shell, and an output shaft gear (1 a) is arranged at the rear end close to the output shaft (1); the front end of the speed change turntable (8) is provided with a speed change turntable gear I (8 a) which can be meshed with the shell gear (6 a), and the rear end of the speed change turntable is provided with a speed change turntable gear II (8 b) which can be meshed with the output shaft gear (1 a);
a speed change turntable steel column hole (8 c) and a fixed cam sleeve steel column hole (10 b) are respectively and correspondingly arranged on the speed change turntable (8) and the fixed cam sleeve (10), and a steel column (9) is arranged in a cavity formed by matching the speed change turntable steel column hole (8 c) and the fixed cam sleeve steel column hole (10 b);
a through hole is provided at the rear end of the output shaft (1), and a fixed cam sleeve ball socket (10 a) and a camshaft ball socket (12 a) for accommodating a steel ball are provided on the surfaces of the fixed cam sleeve (10) and the input camshaft (12) facing each other across the through hole, respectively.
2. An automatic speed change cam steel ball coaxial reducer according to claim 1, characterized in that: the output shaft transparent cover (2) is fixed on the shell (6) through a bolt (3).
3. The automatic speed-changing cam steel ball coaxial reducer according to claim 1, characterized in that: the input camshaft (12) is in screwed connection and matching with the shell through an input camshaft transparent cover (13) and a bearing.
4. The automatic speed-changing cam steel ball coaxial reducer according to claim 1, characterized in that: the middle part of the front end of the input camshaft (12) is inserted into the rear end of the output shaft (1) and is matched with the rear end of the output shaft through a bearing.
5. An automatic speed change cam steel ball coaxial reducer according to claim 1, characterized in that: a roller (19) is arranged between the variable speed turntable (8) and the fixed cam sleeve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221772406.8U CN217603296U (en) | 2022-07-11 | 2022-07-11 | Automatic speed change cam steel ball coaxial speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221772406.8U CN217603296U (en) | 2022-07-11 | 2022-07-11 | Automatic speed change cam steel ball coaxial speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217603296U true CN217603296U (en) | 2022-10-18 |
Family
ID=83591306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221772406.8U Active CN217603296U (en) | 2022-07-11 | 2022-07-11 | Automatic speed change cam steel ball coaxial speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217603296U (en) |
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2022
- 2022-07-11 CN CN202221772406.8U patent/CN217603296U/en active Active
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