Double-row ball anti-overturning rotation drive

Abstract

The embodiment of the utility model relates to the technical field of rotation drive, in particular to a double-row ball anti-overturning rotation drive which comprises a shell, a fixing seat is arranged in the shell, a rotation block is rotatably connected to the outer portion of the fixing seat, and a driving unit used for driving the rotation block to rotate is arranged in the shell. The rotary block is rotationally arranged outside the fixed seat through the double-row ball assembly; the double-row ball assembly comprises two sliding grooves formed in the rotary block and the fixed seat and balls arranged in the sliding grooves. The double-volleyball assembly has the advantages that the double-volleyball assembly is adopted, that is, two independent volleyball transmission systems are arranged between the rotating block and the fixing base, and therefore the overturning moment and the loading capacity are effectively improved; the double-row ball assembly not only increases the contact area of transmission elements and improves the transmission stability and reliability, but also can disperse load, reduce abrasion and prolong the service life of the mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drive, in particular to a double-volleyball anti-overturning rotary drive. Background Art

[0002] In modern industry and mechanical engineering, slewing drive mechanisms are widely used in various occasions that require continuous and stable rotational motion. Among them, the volleyball-type slewing drive mechanism has attracted widespread attention and application due to its simple structure, stable operation, and convenient maintenance. However, when the traditional volleyball-type slewing drive mechanism is subjected to large overturning moments and loads, it often suffers from problems such as performance degradation and increased wear, which limits its application scope to a certain extent.

[0003] Traditional volleyball-type rotary drive mechanisms usually adopt a single-volleyball design, that is, one or more volleyballs are used as transmission elements to transmit torque between the drive shaft and the driven shaft; this design performs well under light load and low-speed operation, but under heavy load and high-speed operation, due to the limited contact area of ​​the volleyball, the overturning moment generated is small, which makes it difficult to meet the requirements of large loads and high performance.

[0004] Therefore, a double-volleyball anti-overturning rotation drive is needed to overcome the occurrence of the above-mentioned problems. Utility Model Content

[0005] In order to solve the above problems, an embodiment of the utility model provides a double-volleyball anti-overturning rotation drive, which achieves the purpose of solving the problems raised in the background technology.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model specifically adopts the following technical scheme: a double-row ball anti-overturning rotary drive, comprising a shell, a fixed seat is arranged inside the shell, a slewing block is rotatably connected to the outside of the fixed seat, a driving unit for driving the slewing block to rotate is arranged inside the shell, and the slewing block is rotatably arranged on the outside of the fixed seat through a double-row ball assembly; the double-row ball assembly includes two sliding grooves opened on the slewing block and the fixed seat, and balls arranged inside the sliding grooves.

[0007] As a further improvement of the above technical solution:

[0008] A connecting groove is arranged between the two sliding grooves.

[0009] The driving unit comprises a rotating shaft rotatably arranged inside the housing, and a worm fixedly connected to the outside of the rotating shaft and meshing with the rotating block.

[0010] The rotary block is provided with a sealing ring 1 located at the gap between the rotary block and the fixed seat, and the rotary block is also provided with a sealing ring 2 located at the gap between the rotary block and the shell.

[0011] The beneficial effects of the embodiments of the utility model are:

[0012] The present application adopts a double-row ball assembly, that is, two independent volleyball transmission systems are set between the rotating block and the fixed seat, thereby effectively improving the overturning moment and load capacity; the double-row ball assembly not only increases the contact area of ​​the transmission elements, improves the stability and reliability of the transmission, but also can disperse the load, reduce wear, and extend the service life of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0015] In the figure: 1. housing; 2. fixed seat; 3. rotating block; 4. driving unit; 41. rotating shaft; 42. worm; 5. double-row ball assembly; 51. slide groove; 52. ball; 6. connecting groove; 7. sealing ring 1; 8. sealing ring 2. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0017] See also Figure 1 to Figure 2 The utility model embodiment discloses a double-row ball anti-overturning rotary drive, comprising a housing 1, a fixed seat 2 is arranged inside the housing 1, a rotary block 3 is rotatably connected to the outside of the fixed seat 2, a driving unit 4 for driving the rotary block 3 to rotate is arranged inside the housing 1, and the rotary block 3 is rotatably arranged outside the fixed seat 2 through a double-row ball assembly 5;

[0018] The double-row ball assembly 5 includes two slide grooves 51 provided on the rotating block 3 and the fixed seat 2, and a ball 52 disposed inside the slide grooves 51;

[0019] The present application adopts a double-row ball assembly 5, that is, two independent volleyball transmission systems are set between the rotating block 3 and the fixed seat 2, thereby effectively improving the overturning moment and load capacity; the double-row ball assembly 5 not only increases the contact area of ​​the transmission element, improves the stability and reliability of the transmission, but also can disperse the load, reduce wear, and extend the service life of the mechanism.

[0020] As a further illustration of this application:

[0021] A connecting groove 6 is provided between the two slide grooves 51, and the two independent slide grooves 51 are connected through the connecting groove 6, so as to facilitate the passage of lubricating oil and facilitate the lubrication work between the two slide grooves 51; the interior of the connecting groove 6 can be threaded, so that the plug can be screwed into the interior of the connecting groove 6, and the opening and closing of the connecting groove 6 can be selected according to actual needs.

[0022] As a further illustration of this application:

[0023] The driving unit 4 includes a rotating shaft 41 rotatably arranged inside the housing 1, and a worm 42 fixedly connected to the outside of the rotating shaft 41 and meshing with the rotating block 3; the motor is installed on the driving unit 4, and the output shaft of the motor is fixedly connected to the rotating shaft 41. After the motor is started, it drives the rotating shaft 41 and the worm 42 to rotate. After the worm 42 rotates, it drives the rotating block 3 to rotate.

[0024] As a further illustration of this application:

[0025] The rotary block 3 is provided with a sealing ring 1 7 located at the gap between the rotary block 3 and the fixed seat 2, and the rotary block 3 is also provided with a sealing ring 2 8 located at the gap between the rotary block 3 and the housing 1; the sealing ring 1 7 and the sealing ring 2 8 are used to prevent foreign matter from intruding.

[0026] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0029] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A double-volleyball anti-overturning rotary drive, comprising a housing (1), a fixed seat (2) is arranged inside the housing (1), a rotary block (3) is rotatably connected to the outside of the fixed seat (2), and a driving unit (4) for driving the rotary block (3) to rotate is arranged inside the housing (1), characterized in that: The slewing block (3) is rotatably arranged outside the fixed seat (2) via a double-row ball assembly (5); The double-row ball assembly (5) comprises two slide grooves (51) provided on the rotating block (3) and the fixed seat (2), and balls (52) arranged inside the slide grooves (51).

2. The double-volleyball anti-overturning rotary drive according to claim 1 is characterized in that: A connecting groove (6) is provided between the two sliding grooves (51).

3. The double-volleyball anti-overturning rotary drive according to claim 1, characterized in that: The driving unit (4) comprises a rotating shaft (41) rotatably arranged inside the housing (1), and a worm (42) fixedly connected to the outside of the rotating shaft (41) and meshing with the rotating block (3).

4. The double-volleyball anti-overturning rotary drive according to claim 1, characterized in that: The rotating block (3) is provided with a sealing ring 1 (7) located at the gap between the rotating block (3) and the fixed seat (2), and the rotating block (3) is also provided with a sealing ring 2 (8) located at the gap between the rotating block (3) and the outer shell (1).

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