CN211737806U

CN211737806U - Adjustable ball spline connection structure

Info

Publication number: CN211737806U
Application number: CN202020242061.XU
Authority: CN
Inventors: 任保平; 任启良
Original assignee: Shanghai Baoliang Precision Transmission Equipment Co ltd
Current assignee: Shanghai Baoliang Precision Transmission Equipment Co ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-10-23
Anticipated expiration: 2030-03-03

Abstract

The utility model belongs to ball spline field, concretely relates to ball spline draw bail with adjustable, including the connecting axle, first ball groove has been seted up on the surface of connecting axle, the outside slidable mounting of connecting axle has a key section of thick bamboo, the second ball groove has been seted up in the key section of thick bamboo, the outside of a key section of thick bamboo is provided with the heat dissipation strip, the right-hand member of a key section of thick bamboo is provided with square seat, there is the stop collar through threaded connection in the square seat, the through-hole has been seted up at the middle part of stop collar, in the through-hole with connecting axle sliding connection. The utility model discloses an install first seal cover and second seal cover respectively at the both ends of a key section of thick bamboo, and design first sand grip and second sand grip in first seal cover and the second seal cover respectively, make its and the cooperation of the epaxial first ball groove of connecting, carry out good sealing between a key section of thick bamboo and the connecting axle, and when needs add lubricating oil, can add lubricated convenient and fast with second seal cover and key section of thick bamboo separation back.

Description

Adjustable ball spline connection structure

Technical Field

The utility model relates to a ball spline technical field specifically is a ball spline draw bail with adjustable.

Background

At present, in a transmission mechanism, various transmission modes and connection structures can be adopted, and when power is transmitted, a key connection mode can be adopted to connect transmission parts. However, components connected in a conventional manner such as a flat key can transmit rotational power, but axial displacement is not adjustable, so that a ball spline is gradually adopted, so that axial displacement can be adjusted, and further adjustment can be performed.

The ball spline is generally mounted with balls in a ball groove on a shaft, and then mounted with a key body part, and power is transmitted through the balls. However, the existing ball spline has poor sealing performance, is inconvenient to lubricate, and can generate heat to increase the temperature and reduce the service life of the ball spline in the process of rotating transmission. Accordingly, there is a need for improvements in the art.

Disclosure of Invention

An object of the utility model is to provide a ball spline draw bail with adjustable has solved current ball spline sealing performance poor, inconvenient lubricated problem, has solved the poor problem of current spline heat dispersion moreover.

In order to achieve the above object, the utility model provides a following technical scheme: the adjustable ball spline connection structure comprises a connecting shaft, wherein a first ball groove is formed in the surface of the connecting shaft, a key cylinder is slidably mounted on the outer side of the connecting shaft, a second ball groove is formed in the key cylinder, a heat dissipation strip is arranged on the outer side of the key cylinder, a square seat is arranged at the right end of the key cylinder, a limiting sleeve is connected into the square seat through threads, a through hole is formed in the middle of the limiting sleeve, the limiting sleeve is slidably connected with the connecting shaft in the through hole, a first sealing sleeve is connected into the limiting sleeve through threads, the first sealing sleeve is slidably connected with the connecting shaft, a first convex strip is arranged on the inner side of the first sealing sleeve, a second sealing sleeve is slidably sleeved at the left end of the key cylinder, a second convex strip is arranged on the inner side of the second sealing sleeve, and a fastening sleeve is connected to the left.

Preferably, the number of the first ball grooves is four, the four first ball grooves are arranged on the surface of the connecting shaft in an annular array, and balls are installed in each first ball groove.

Preferably, the number of the second ball grooves is four, the four second ball grooves are arranged in the key cylinder in an annular array, and a ball is mounted in each second ball groove.

Preferably, the heat dissipation strips and the key cylinder are of an integrated structure, the number of the heat dissipation strips is eight, and the eight heat dissipation strips are arranged on the outer side of the key cylinder in an annular array.

Preferably, the square seat is provided with four preformed holes, and the four preformed holes are distributed at four corners of the square seat.

Preferably, a circular hole is formed in the middle of the fastening sleeve, a connecting shaft is connected in the circular hole in a sliding mode, and the fastening sleeve is in close contact with the second sealing sleeve.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses an install first seal cover and second seal cover respectively at the both ends of a key section of thick bamboo, and design first sand grip and second sand grip in first seal cover and the second seal cover respectively, make its and the cooperation of the epaxial first ball groove of connecting, carry out good sealing between a key section of thick bamboo and the connecting axle, and when needs add lubricating oil, can add lubricated convenient and fast with second seal cover and key section of thick bamboo separation back.

2. The utility model discloses a design evenly distributed's heat dissipation strip in the outside of a key section of thick bamboo for when a key section of thick bamboo takes place to rotate, can produce wind-force, be favorable to the heat dissipation of a key section of thick bamboo, avoid the ball high temperature, lead to life to reduce, consequently prolonged life.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a right side view of the square seat of fig. 1 of the present invention;

fig. 3 is a left side view of the key cylinder of fig. 1 of the present invention;

fig. 4 is a right side view of the first sealing boot of fig. 1 of the present invention;

fig. 5 is a left side view of the second sealing sleeve of fig. 1 according to the present invention.

In the figure: 1. a connecting shaft; 2. a first ball groove; 3. a key cylinder; 4. a second ball groove; 5. a ball bearing; 6. a heat dissipating strip; 7. a square base; 8. reserving a hole; 9. a limiting sleeve; 10. a through hole; 11. a first seal cartridge; 111. a first rib; 12. a second seal cartridge; 121. a second convex strip; 13. fastening sleeves; 14. a circular hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-5, an adjustable ball spline connection structure includes a connection shaft 1, a first ball groove 2 is formed on the surface of the connection shaft 1, a key cylinder 3 is slidably mounted on the outer side of the connection shaft 1, a second ball groove 4 is formed in the key cylinder 3, a heat dissipation strip 6 is arranged on the outer side of the key cylinder 3, a square seat 7 is arranged at the right end of the key cylinder 3, a limit sleeve 9 is connected in the square seat 7 through a thread, a through hole 10 is formed in the middle of the limit sleeve 9, the through hole 10 is slidably connected with the connection shaft 1, the connection shaft 1 can pass through the limit sleeve 9, a first seal sleeve 11 is connected in the limit sleeve 9 through a thread, the first seal sleeve 11 is slidably connected with the connection shaft 1, a first protruding strip 111 is arranged on the inner side of the first seal sleeve 11, a second seal sleeve 12 is slidably sleeved on the left end of the key cylinder 3, and a second protruding strip 121 is, the first sealing sleeve 11 and the second sealing sleeve 12 are made of rubber materials, the sealing performance is good, the first sealing sleeve and the second sealing sleeve can be in sliding connection with the connecting shaft 1, and the left end of the key cylinder 3 is connected with a fastening sleeve 13 through threads.

Referring to fig. 1 and 2, the number of the first ball grooves 2 is four, the four first ball grooves 2 are arranged on the surface of the connecting shaft 1 in an annular array, and a ball 5 is mounted in each first ball groove 2. By the design of the first ball groove 2, an installation space is provided for the ball 5.

Referring to fig. 1 and 2, the number of the second ball grooves 4 is four, the four second ball grooves 4 are arranged in the key cylinder 3 in an annular array, and a ball 5 is installed in each second ball groove 4. Through the design of second ball groove 4, for ball 5 provides installation space, realized connecting axle 1 and the cooperation of key cylinder 3 for connecting axle 1 can't take place relative rotation with key cylinder 3.

Referring to fig. 1 and 3, the heat dissipation strips 6 and the key cylinder 3 are integrated, the number of the heat dissipation strips 6 is eight, and the eight heat dissipation strips 6 are arranged in an annular array on the outer side of the key cylinder 3. Through the design of the heat dissipation strip 6, wind power can be generated when the key cylinder 3 rotates, and therefore heat dissipation is facilitated.

Referring to fig. 1, 2, and 3, the square base 7 is provided with four preformed holes 8, and the four preformed holes 8 are distributed at four corners of the square base 7. The preformed hole 8 is used for installing a bolt, so that the key cylinder 3 and other transmission parts can be conveniently installed.

Referring to fig. 1, a circular hole 14 is formed in the middle of the fastening sleeve 13, the connecting shaft 1 is slidably connected in the circular hole 14, and the fastening sleeve 13 is in close contact with the second sealing sleeve 12. The circular hole 14 is designed such that the connecting shaft 1 can penetrate the fastening sleeve 13.

The utility model discloses the concrete implementation process as follows: according to the scheme, the first sealing sleeve 11 and the second sealing sleeve 12 are respectively installed at the two ends of the key cylinder 3, the first protruding strip 111 and the second protruding strip 121 are respectively designed in the first sealing sleeve 11 and the second sealing sleeve 12 and are matched with the first ball groove 2 on the connecting shaft 1, good sealing is conducted between the key cylinder 3 and the connecting shaft 1, when lubricating oil needs to be added, the fastening sleeve 13 is rotated, the fastening sleeve 13 is separated from the key cylinder 3 through the thread effect, then the lubricating oil can be added after the second sealing sleeve 12 is separated from the key cylinder 3, and the lubricating oil is convenient and rapid to lubricate; through the heat dissipation strip 6 of the outside design evenly distributed at the key cylinder 3 for when the key cylinder 3 takes place to rotate, can produce wind-force, be favorable to the heat dissipation of key cylinder 3, avoid ball 5 high temperature, lead to life to reduce, consequently prolonged life.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a ball spline draw bail with adjustable, includes connecting axle (1), its characterized in that: the surface of the connecting shaft (1) is provided with a first ball groove (2), the outer side of the connecting shaft (1) is slidably provided with a key cylinder (3), the key cylinder (3) is internally provided with a second ball groove (4), the outer side of the key cylinder (3) is provided with a heat dissipation strip (6), the right end of the key cylinder (3) is provided with a square seat (7), the square seat (7) is internally connected with a limit sleeve (9) through threads, the middle part of the limit sleeve (9) is provided with a through hole (10), the through hole (10) is internally connected with the connecting shaft (1) in a sliding manner, the limit sleeve (9) is internally connected with a first seal sleeve (11) through threads, the first seal sleeve (11) is connected with the connecting shaft (1) in a sliding manner, the inner side of the first seal sleeve (11) is provided with a first convex strip (111), the left end of the key cylinder (3) is sleeved with a second seal, the inner side of the second sealing sleeve (12) is provided with a second convex strip (121), and the left end of the key cylinder (3) is connected with a fastening sleeve (13) through threads.

2. The adjustable ball spline coupling of claim 1, wherein: the number of the first ball grooves (2) is four, the first ball grooves (2) are arranged on the surface of the connecting shaft (1) in an annular array mode, and balls (5) are installed in each first ball groove (2).

3. The adjustable ball spline coupling of claim 1, wherein: the number of the second ball grooves (4) is four, the four second ball grooves (4) are arranged in the key cylinder (3) in an annular array mode, and balls (5) are installed in each second ball groove (4).

4. The adjustable ball spline coupling of claim 1, wherein: the heat dissipation strips (6) and the key cylinder (3) are of an integrated structure, the number of the heat dissipation strips (6) is eight, and the heat dissipation strips (6) are arranged on the outer side of the key cylinder (3) in an annular array mode.

5. The adjustable ball spline coupling of claim 1, wherein: the square seat (7) is provided with reserved holes (8), the number of the reserved holes (8) is four, and the reserved holes (8) are distributed at four corners of the square seat (7).

6. The adjustable ball spline coupling of claim 1, wherein: a round hole (14) is formed in the middle of the fastening sleeve (13), a connecting shaft (1) is connected in the round hole (14) in a sliding mode, and the fastening sleeve (13) is in close contact with the second sealing sleeve (12).