Rotating table driving structure

Abstract

The utility model relates to the technical field of rotary tables, in particular to a rotary table driving structure which comprises a base and a rotary table, and the rotary table is rotatably arranged at the top of the base. The device further comprises a chain, a driving motor, a driving chain wheel and an unpowered chain wheel, the driving chain wheel is positioned between the turntable and the chain and is meshed with the chain; the two unpowered chain wheels are rotationally arranged at the top of the base and located on the outer side of the chain, the two unpowered chain wheels are symmetrically arranged on the two sides of the driving chain wheel and engaged with the chain, and the chain located at the position of the driving chain wheel is bent in a U shape through the two unpowered chain wheels; the chain located at the driving chain wheel is bent in a U shape through the two unpowered chain wheels, the number of meshing teeth of the driving chain wheel and the chain is effectively increased, meshing strength is improved, and driving force is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating tables, in particular to a rotating table driving structure. Background Art

[0002] In the production line operations of the processing workshop, the rotary table plays a key role and is responsible for tasks such as conveying and turning the workpiece.

[0003] The utility model with announcement number CN202625251U discloses a device of a motor-driven chain rotating table, which has a simple and compact structure, occupies a small space, is easy to operate and maintain. It includes a motor, which is fixedly mounted on a fixed disk, the motor is connected to a sprocket, and a rotating ring is mounted on the fixed disk through a rotating shaft. An arc-shaped chain that engages with the sprocket is arranged on the edge of the rotating ring.

[0004] As mentioned above, the device is characterized in that the motor is fixed on the fixed disk and connected to it through a sprocket, while the rotating ring is installed on the fixed disk via a rotating shaft, and an arc-shaped chain matching the sprocket is configured on its edge to realize the rotation function. However, in this design, only one side of the sprocket is in contact with the ring chain, resulting in a limited number of teeth meshing at the same time, and the meshing strength and driving force are weak. In order to overcome this technical limitation, it is urgent to design an innovative rotating table drive structure to enhance the driving ability and ensure efficient operation. Utility Model Content

[0005] In view of this, the utility model proposes a rotating table driving structure, which uses two unpowered sprockets to bend the chain at the driving sprocket into a U shape, effectively increasing the number of meshing teeth between the driving sprocket and the chain, improving the meshing strength, and enhancing the driving force.

[0006] The technical solution of the utility model is achieved in this way:

[0007] The utility model provides a rotating table driving structure, comprising a base and a rotating disk, wherein:

[0008] The turntable is rotatably arranged on the top of the base;

[0009] It also includes a chain, a driving motor, a driving sprocket and an unpowered sprocket, wherein:

[0010] The chain is in an arc shape and surrounds the side of the turntable, and both ends of the chain are fixedly connected to the side of the turntable;

[0011] The driving motor is fixedly arranged at the bottom of the base, and the output shaft of the driving motor is fixedly connected to the driving sprocket;

[0012] The driving sprocket is located between the rotating disk and the chain and is meshed with the chain;

[0013] The two unpowered sprockets are rotatably arranged on the top of the base and are located on the outside of the chain. The two unpowered sprockets are symmetrically arranged on both sides of the driving sprocket and mesh with the chain. The chain at the driving sprocket is bent into a U shape through the two unpowered sprockets.

[0014] On the basis of the above technical solution, preferably, the driving sprocket and the two unpowered sprockets are arranged in a herringbone shape.

[0015] On the basis of the above technical solution, preferably, a gap of 0-10 mm is provided between the driving sprocket and the rotating disk.

[0016] On the basis of the above technical solution, preferably, the turntable includes a ring track and a ring seat, wherein:

[0017] The ring seat is fixedly arranged on the top of the ring rail and is concentric;

[0018] The chain is arranged on the side of the circular rail, and both ends of the chain are fixedly connected to the side of the circular rail.

[0019] On the basis of the above technical solution, preferably, a plurality of rollers are rotatably arranged on the top of the base, wherein:

[0020] A plurality of rollers are arranged in a circumferential annular array along the annular track, and the rollers are in contact with and rollingly connected to the inner side wall of the annular track.

[0021] On the basis of the above technical solution, preferably, a plurality of supporting wheels are rotatably provided on the top of the base, wherein:

[0022] The plurality of support wheels correspond to the plurality of rollers one by one;

[0023] The supporting wheel is in contact with and rolling connection with the bottom surface of the ring seat.

[0024] On the basis of the above technical solution, preferably, the turntable further includes a mounting bracket, a screw and a nut, wherein:

[0025] Two mounting brackets are provided between the two ends of the chain, the tops of the two mounting brackets are fixedly connected to the bottom of the ring seat, and a screw rod is provided through the lower end of each mounting bracket in the transverse direction;

[0026] Two nuts are threadedly connected to each of the screw rods, and the two nuts are clamped and fixed on both sides of the lower end of the corresponding mounting bracket;

[0027] One end of the screw rod is fixedly connected to one end of the adjacent chain.

[0028] On the basis of the above technical solution, preferably, the base includes two bottom plates and two top plates, wherein:

[0029] The two top plates and the two bottom plates form a square frame structure, and the top plates are fixedly arranged on the tops of the bottom plates;

[0030] The driving motor is arranged between the two bottom plates;

[0031] The roller and the supporting wheel are rotatably arranged on the top of the top plate.

[0032] On the basis of the above technical solution, preferably, the base further includes a cross, wherein:

[0033] The cross is fixedly arranged between the two top plates.

[0034] On the basis of the above technical solution, preferably, a motor shield is provided below the driving motor, wherein:

[0035] One end of the motor shield is fixedly arranged on the bottom of the base.

[0036] The rotary table driving structure of the utility model has the following beneficial effects compared with the prior art:

[0037] (1) The chain is wrapped around the side of the turntable in an arc shape, and the two ends of the chain are fixedly connected to the side of the turntable, and then a driving sprocket is arranged between the turntable and the chain and meshed with the chain, and two unpowered sprockets are arranged on the outside of the chain and meshed with the chain. The chain at the driving sprocket is bent into a U shape by the two unpowered sprockets, so that the number of meshing teeth between the driving sprocket and the chain can be increased through this structure, the meshing strength can be improved, and the driving force can be increased.

[0038] (2) By providing a mounting bracket, a screw and a nut, it is convenient to tension the chain through the screw so that the chain and the driving sprocket are effectively engaged.

[0039] (3) By setting rollers and support wheels, the turntable can rotate smoothly on the top of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 It is a three-dimensional diagram of a rotating table driving structure of the utility model;

[0042] Figure 2 A three-dimensional diagram of a rotating table driving structure of the utility model from another perspective;

[0043] Figure 3 It is a partial stereogram of a rotating table driving structure of the utility model;

[0044] In the figure: 1. base; 2. turntable; 3. chain; 4. driving motor; 5. driving sprocket; 6. unpowered sprocket; 7. roller; 8. supporting wheel; 9. motor shield; 11. bottom plate; 12. top plate; 13. cross; 21. ring rail; 22. ring seat; 23. mounting bracket; 24. screw; 25. nut. DETAILED DESCRIPTION

[0045] The following will be combined with the specific implementation of the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] like Figure 1-3 As shown, a rotating table driving structure of the utility model includes a base 1 and a turntable 2, and also includes a chain 3, a driving motor 4, a driving sprocket 5 and an unpowered sprocket 6.

[0047] Among them, the turntable 2 is rotatably set on the top of the base 1; the chain 3 is arc-shaped and surrounds the side of the turntable 2, and the two ends of the chain 3 are fixed to the side of the turntable 2; the driving motor 4 is fixedly set at the bottom of the base 1, and the output shaft of the driving motor 4 is fixedly connected to the driving sprocket 5; the driving sprocket 5 is between the turntable 2 and the chain 3, and is meshed with the chain 3; two unpowered sprockets 6 are rotatably set on the top of the base 1, and are on the outside of the chain 3. The two unpowered sprockets 6 are symmetrically set on both sides of the driving sprocket 5 and meshed with the chain 3. The chain 3 at the driving sprocket 5 is bent in a U shape through the two unpowered sprockets 6.

[0048] When the driving motor 4 is working, its output shaft drives the driving sprocket 5 to rotate. The driving sprocket 5 rotates the turntable 2 on the top of the base 1 by meshing with the chain 3. When rotating, the chain 3 drives the unpowered sprocket 6 to rotate. The unpowered sprocket 6 is used to maintain the shape of the chain 3 at the driving sprocket 5 to increase the number of meshing teeth between the driving sprocket 5 and the chain 3, that is, the unpowered sprocket 6 is meshed with the chain 3 to maintain the correct direction and tension of the chain 3, ensure the stability during the transmission process and reduce the chain tooth jumping phenomenon, so as to improve the meshing strength between the driving sprocket 5 and the chain 3 and enhance the driving force.

[0049] In the above structure, the driving sprocket 5 and the two unpowered sprockets 6 are arranged in a herringbone shape, and the diameter of the driving sprocket 5 is larger than the diameter of the unpowered sprocket 6, and the diameters of the two unpowered sprockets 6 are equal. A gap of 0-10 mm is set between the driving sprocket 5 and the turntable 2 to prevent the driving sprocket 5 and the turntable 2 from interfering with each other. When the driving sprocket 5 and the two unpowered sprockets 6 are arranged, the chain 3 at the driving sprocket 5 is bent in a U shape. When the chain 3 rotates, the chain 3 moves along the U-shaped trajectory from between the driving sprocket 5 and the two unpowered sprockets 6, and pulls the turntable 2 to rotate on the top of the base 1 through the movement.

[0050] The turntable 2 includes a ring rail 21 and a ring seat 22, wherein the ring seat 22 is fixedly arranged on the top of the ring rail 21 and is concentric; the chain 3 is arranged on the side of the ring rail 21, and the two ends of the chain 3 are fixedly connected to the side of the ring rail 21. When installing the chain 3, the chain 3 is laid on the side of the ring rail 21, and then the chain 3 at the driving sprocket 5 is bent into a U shape and the chain 3 is meshed with the driving sprocket 5 and the unpowered sprocket 6, and then the chain 3 is tightened and the two ends of the chain 3 are fixed to the side of the ring rail 21.

[0051] In order to realize the smooth rotation of the turntable 2, a plurality of rollers 7 are rotatably provided on the top of the base 1, wherein the plurality of rollers 7 are arranged in a circumferential annular array along the ring rail 21, and the rollers 7 are in contact with and rollingly connected to the inner wall of the ring rail 21; a plurality of supporting wheels 8 are rotatably provided on the top of the base 1, wherein the plurality of supporting wheels 8 correspond to the plurality of rollers 7 one by one; the supporting wheels 8 are in contact with and rollingly connected to the bottom surface of the ring seat 22, and when the turntable 2 rotates, the rollers 7 roll along the inner wall of the ring rail 21, and the supporting wheels 8 roll along the bottom surface of the ring seat 22.

[0052] During use, the chain 3 may become loose. To facilitate the tensioning of the chain 3, the turntable 2 also includes a mounting bracket 23, a screw rod 24 and a nut 25, wherein two mounting brackets 23 are arranged between the two ends of the chain 3, the tops of the two mounting brackets 23 are fixedly connected to the bottom of the ring seat 22, and a screw rod 24 is arranged transversely through the lower end of each mounting bracket 23; two nuts 25 are threadedly connected to each screw rod 24, and the two nuts 25 are clamped and fixed on both sides of the lower end of the corresponding mounting bracket 23; one end of the screw rod 24 is fixedly connected to one end of the adjacent chain 3.

[0053] When the chain 3 is loose, the nut 25 is loosened, and then the screw rod 24 is tightened. After tightening, the two nuts 25 are tightened so that the two nuts 25 are clamped and fixed on both sides of the lower end of the mounting bracket 23. By tightening, the chain 3 is tensioned.

[0054] The base 1 adopts a frame-like structure to effectively reduce weight, and specifically includes two bottom plates 11 and two top plates 12, wherein the two top plates 12 and the two bottom plates 11 constitute a square frame structure, and the top plate 12 is fixedly arranged on the top of the bottom plate 11; the driving motor 4 is arranged between the two bottom plates 11; and the roller 7 and the supporting wheel 8 are rotatably arranged on the top of the top plate 12.

[0055] In order to improve the structural strength of the base 1 , the base 1 further includes a cross 13 , wherein the cross 13 is fixedly disposed between the two top plates 12 .

[0056] In addition, in order to protect the driving motor 4 , a motor shield 9 is provided below the driving motor 4 , wherein one end of the motor shield 9 is fixedly provided at the bottom of the base 1 , and the bottom of the driving motor 4 is protected by the motor shield 9 .

[0057] The use method of a rotating table driving structure of the utility model is as follows:

[0058] When the turntable 2 needs to rotate, the drive motor 4 is powered on, and the output shaft of the drive motor 4 drives the driving sprocket 5 to rotate. The driving sprocket 5 engages with the chain 3 to rotate the turntable 2 on the top of the base 1.

[0059] When rotating, the chain 3 drives the unpowered sprocket 6 to rotate, and the unpowered sprocket 6 is used to maintain the shape of the chain 3 at the driving sprocket 5, so that the chain 3 passing through the driving sprocket 5 is bent in a U shape.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotating table driving structure, comprising a base (1) and a rotating disk (2), wherein: The turntable (2) is rotatably arranged on the top of the base (1); It is characterized in that it also includes a chain (3), a driving motor (4), a driving sprocket (5) and an unpowered sprocket (6), wherein: The chain (3) is in an arc shape and surrounds the side of the turntable (2), and the two ends of the chain (3) are fixedly connected to the side of the turntable (2); The driving motor (4) is fixedly arranged at the bottom of the base (1), and the output shaft of the driving motor (4) is fixedly connected to the driving sprocket (5); The driving sprocket (5) is located between the rotating disk (2) and the chain (3), and is meshed with the chain (3); Two unpowered sprockets (6) are rotatably arranged on the top of the base (1) and are located outside the chain (3). The two unpowered sprockets (6) are symmetrically arranged on both sides of the driving sprocket (5) and mesh with the chain (3). The chain (3) located at the driving sprocket (5) is bent into a U shape through the two unpowered sprockets (6).

2. A rotating table driving structure according to claim 1, characterized in that: The driving sprocket (5) and the two unpowered sprockets (6) are arranged in a herringbone shape.

3. A rotating table driving structure as claimed in claim 2, characterized in that: A gap of 0-10 mm is provided between the driving sprocket (5) and the rotating disk (2).

4. A rotating table driving structure as claimed in claim 3, characterized in that: The rotating disk (2) comprises a ring track (21) and a ring seat (22), wherein: The ring seat (22) is fixedly arranged on the top of the ring rail (21) and is concentric with the ring rail (21); The chain (3) is arranged on the side of the circular rail (21), and both ends of the chain (3) are fixedly connected to the side of the circular rail (21).

5. A rotating table driving structure as claimed in claim 4, characterized in that: The top of the base (1) is rotatably provided with a plurality of rollers (7), wherein: A plurality of rollers (7) are arranged in a circular array along the circumference of the ring track (21), and the rollers (7) are in contact with and rolling connection with the inner side wall of the ring track (21).

6. A rotating table driving structure as claimed in claim 5, characterized in that: The top of the base (1) is rotatably provided with a plurality of supporting wheels (8), wherein: The plurality of support wheels (8) correspond to the plurality of rollers (7) in one-to-one correspondence; The supporting wheel (8) is in contact with the bottom surface of the ring seat (22) and is rollingly connected thereto.

7. A rotating table driving structure as claimed in claim 6, characterized in that: The turntable (2) further comprises a mounting bracket (23), a screw rod (24) and a nut (25), wherein: Two mounting brackets (23) are provided between the two ends of the chain (3), the tops of the two mounting brackets (23) are fixedly connected to the bottom of the ring seat (22), and a screw rod (24) is provided through the lower end of each mounting bracket (23) in a transverse direction; Two nuts (25) are screwed on each screw rod (24), and the two nuts (25) are clamped and fixed on both sides of the lower end of the corresponding mounting bracket (23); One end of the screw rod (24) is fixedly connected to one end of the adjacent chain (3).

8. A rotating table driving structure as claimed in claim 7, characterized in that: The base (1) comprises two bottom plates (11) and two top plates (12), wherein: The two top plates (12) and the two bottom plates (11) form a square frame structure, and the top plate (12) is fixedly arranged on the top of the bottom plate (11); The driving motor (4) is arranged between the two bottom plates (11); The roller (7) and the supporting wheel (8) are rotatably arranged on the top of the top plate (12).

9. A rotating table driving structure as claimed in claim 8, characterized in that: The base (1) further comprises a cross (13), wherein: The cross (13) is fixedly arranged between the two top plates (12).

10. The rotating table driving structure according to claim 1, characterized in that: A motor shield (9) is provided below the driving motor (4), wherein: One end of the motor shield (9) is fixedly arranged on the bottom of the base (1).

Images