A manually adjustable damping turntable

Abstract

The utility model discloses a can realize manual adjustment's damping type turntable, its characterized in that: the turntable includes fixed base part and rotation part, the base part includes base (1), is provided with support cylinder (2) on the top end surface of base (1), the bottom of support cylinder (2) is sleeved with first bearing (3), and the top is through annular pressing plate (4) and is pressed and is installed with second bearing (5), the inner ring of first bearing (3) and second bearing (5) is linked with support cylinder (2), and its outer ring is linked with the turntable (6) in rotation part, be provided with two sets of adjusting mechanism (7) on the outer wall of turntable (6), and the central axis of these two sets of adjusting mechanism (7) is collinear.

Description

Technical Field

[0001] This utility model relates to a turntable, and more particularly to a damped turntable that can be manually adjusted. Background Technology

[0002] In industrial production, it is sometimes necessary to place workpieces on a turntable and have the turntable rotate them. Under certain working conditions, the turntable needs to have a certain damping, that is, the turntable will only rotate after the torque it bears exceeds a certain value. A traditional damped turntable has one (or more) grooved stops on its bottom surface. A roller is mounted on the support frame that supports the turntable. The roller is pressed against the groove by a spring, and the pressure generated by the spring makes the roller press against the stop, thus locking the turntable. As the torque on the turntable increases, the roller rolls along the inclined surface of the groove (during which the spring is compressed). When the roller comes out of the groove, the turntable regains its freedom and can rotate freely. However, the traditional damped turntable described above has many problems in use: First, its structure is relatively complex, making installation and subsequent maintenance relatively troublesome; second, at the moment the roller disengages from the groove in the stop block, the speed of the turntable suddenly increases, resulting in a large impact force, which poses a certain safety hazard to the workpiece fixed above the turntable; at the same time, when the roller disengages from the stop block, the spring relaxes again, causing the roller to rise again to a height that can interfere with the movement trajectory of the stop block. In other words, this type of damped turntable can only rotate a certain angle after unlocking, and cannot achieve one or more rotations, thus limiting its application and having significant limitations.

[0003] Therefore, a method or apparatus is needed to solve the above problems. Utility Model Content

[0004] The present invention addresses the aforementioned shortcomings of the existing technology by proposing a damped turntable that is simple in structure, ingenious in design, and rational in layout. This turntable is capable of damped rotation, with adjustable damping magnitude at any time, and allows for multi-rotation of the turntable.

[0005] The technical solution of this utility model is: a damped turntable that can be manually adjusted, characterized in that: the turntable includes a fixed base part and a rotating part. The base portion includes a base 1, with a support cylinder 2 disposed on the top surface of the base 1. A first bearing 3 is sleeved on the bottom of the support cylinder 2, and a second bearing 5 is press-fitted onto the top of the support cylinder 2 via an annular pressure plate 4. The inner rings of the first bearing 3 and the second bearing 5 are connected to the support cylinder 2, and their outer rings are connected to the turntable 6 in the rotating part. Two sets of adjustment mechanisms 7 are provided on the outer wall of the turntable 6, and the central axes of the two sets of adjustment mechanisms 7 are collinear. The adjustment mechanism includes a support sleeve 8 fixedly connected to the turntable 6. A drive sleeve 9 is internally threaded onto the support sleeve 8. One end of the drive sleeve 9 protruding from the support sleeve 8 is provided with an external hexagonal end head 10. A bolt 11 is also movably connected through the inner hole of the drive sleeve 9. The end head 12 of the bolt 11 is located in a countersunk hole opened at the end of the support sleeve 8, and the other end of the bolt 11 is threadedly connected to a connecting block 13. A damping block 14 with an arc-shaped friction surface is provided on the connecting block 13. A spring 15 is also sleeved on the outside of the bolt 11. The two ends of the spring 15 are in contact with the drive sleeve 9 and the connecting block 13, respectively.

[0006] An air passage support plate 16 is provided in the inner cavity of the support cylinder 2. Multiple connecting seats 17 are evenly distributed in the circumferential direction on the edge of the air passage support plate 16. Connecting bolts 18 are provided on the connecting seats 17 and are threaded to the inner wall of the support cylinder 2. A longitudinally distributed air passage 19 is provided at the center of the air passage support plate 16. The top end of the air passage 19 passes through a through hole opened at the center of the top surface of the turntable 6. A rotary joint 20 is also provided at the top end of the air passage 19, and the bottom end of the air passage 19 is connected to the air source through a pipeline.

[0007] Compared with the prior art, this utility model has the following advantages: This type of manually adjustable damped turntable features a simple structure, ingenious design, and reasonable layout. Addressing the various problems encountered by traditional turntables during operation, it employs a unique structure with two adjustment mechanisms on the rotating part. In these mechanisms, damping blocks are spring-pressed against the outer wall of the fixed part, utilizing the friction between the damping blocks and the fixed part to provide damping for the turntable. When the torque on the turntable exceeds this frictional force, the turntable can rotate relative to the fixed part. By rotating the drive sleeve in the adjustment mechanism, the pressure applied by the spring to the damping blocks can be adjusted, thereby adjusting the friction between the damping blocks and the fixed part, thus achieving adjustment of the damping value. Its adjustment mechanism and damping block do not affect the rotation of the turntable. In other words, no matter how large the damping value is, the turntable can rotate in full circumference and multiple circumferences. At the same time, when switching from a stationary state to a rotating state, only the static friction of the damping block is converted into dynamic friction. The difference between the two is not large. Therefore, the rotation speed of the turntable will not suddenly change from stationary to high-speed rotation. This can avoid impacting the workpiece on the turntable and avoid safety accidents. Moreover, its internal cavity is equipped with an air passage structure that can provide high-pressure gas for various pneumatic components such as clamps on the turntable.

[0008] In conclusion, this type of damped turntable has many advantages and is particularly suitable for widespread application in this field, with a very broad market prospect. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model.

[0010] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention (excluding the turntable).

[0011] Figure 3 This is a structural schematic diagram of the fixed base portion in an embodiment of this utility model.

[0012] Figure 4 This is a schematic diagram of the rotating part in an embodiment of this utility model.

[0013] Figure 5 This is a schematic diagram of the internal structure (three-dimensional state) of an embodiment of the present invention.

[0014] Figure 6 This is a partial cross-sectional view of an embodiment of the present utility model.

[0015] Figure 7 This is a schematic diagram of the structure of the air passage support plate in an embodiment of this utility model. Detailed Implementation

[0016] The specific embodiments of this utility model will be described below with reference to the accompanying drawings. Figures 1 to 7 As shown: A damped turntable that can be manually adjusted includes a fixed base and a rotating part. The base portion includes a base 1, with a support cylinder 2 disposed on the top surface of the base 1. A first bearing 3 is sleeved on the bottom of the support cylinder 2, and a second bearing 5 is press-fitted onto the top of the support cylinder 2 via an annular pressure plate 4. The inner rings of the first bearing 3 and the second bearing 5 are connected to the support cylinder 2, and their outer rings are connected to the turntable 6 in the rotating part. Two sets of adjustment mechanisms 7 are provided on the outer wall of the turntable 6, and the central axes of the two sets of adjustment mechanisms 7 are collinear. The adjustment mechanism includes a support sleeve 8 fixedly connected to the turntable 6. A drive sleeve 9 is internally threaded onto the support sleeve 8. One end of the drive sleeve 9 protruding from the support sleeve 8 is provided with an external hexagonal end head 10. A bolt 11 is also movably connected through the inner hole of the drive sleeve 9. The end head 12 of the bolt 11 is located in a countersunk hole opened at the end of the support sleeve 8, and the other end of the bolt 11 is threadedly connected to a connecting block 13. A damping block 14 with an arc-shaped friction surface is provided on the connecting block 13. A spring 15 is also sleeved on the outside of the bolt 11. The two ends of the spring 15 are in contact with the drive sleeve 9 and the connecting block 13, respectively.

[0017] An air passage support plate 16 is provided in the inner cavity of the support cylinder 2. Multiple connecting seats 17 are evenly distributed in the circumferential direction on the edge of the air passage support plate 16. Connecting bolts 18 are provided on the connecting seats 17 and are threaded to the inner wall of the support cylinder 2. A longitudinally distributed air passage 19 is provided at the center of the air passage support plate 16. The top end of the air passage 19 passes through a through hole opened at the center of the top surface of the turntable 6. A rotary joint 20 is also provided at the top end of the air passage 19, and the bottom end of the air passage 19 is connected to the air source through a pipeline.

[0018] The working process of the manually adjustable damping turntable in this embodiment of the utility model is as follows: The two adjustment mechanisms set in this state can be used simultaneously or individually. Generally, they are used individually to achieve the purpose of one in use and one in reserve. When used individually, it is only necessary to operate the adjustment mechanism that is not in use. Rotate the drive sleeve 9 outward. The drive sleeve 9 moves away from the support cylinder 2, and the countersunk hole on it will drive the end 12 of the bolt 11 to move outward, so as to prevent the damping block 14 from contacting the side wall of the support cylinder 2. In another adjustment mechanism that is in operation, the damping block 14 will be pressed against the outer wall of the support cylinder 2 under the action of the spring 15, and the friction between the two will prevent the turntable 6 from rotating relative to the base 1. When the torque borne by the turntable 6 is insufficient to overcome the above-mentioned friction and cannot drive the turntable 6 to rotate relative to the base 1, the turntable 6 stops. Conversely, when the torque borne by the turntable 6 is sufficient to overcome the aforementioned frictional force, it will drive the turntable 6 to rotate relative to the base 1. During the rotation, the damping block 14 and the outer wall of the support cylinder 2 will always slide against each other. When the torque decreases, the turntable 6 can stop rotating at any angle at any time. When it is necessary to adjust the maximum torque when the trigger turntable 6 rotates, the operator can use tools such as a wrench to drive the drive sleeve 9 to rotate through the hexagonal end 10, thereby changing the relative distance between the drive sleeve 9 and the support cylinder 2. When the distance between the two increases, the drive sleeve 9 will move outward, and the spring 15 will relax, reducing its pressure on the damping block 14. Conversely, when the distance between the two decreases, the drive sleeve 9 will move inward, and the spring 15 will compress, increasing its pressure on the damping block 14. On the turntable 6, clamps and other pneumatically driven mechanisms need to be installed. In order to provide pressurized gas to these mechanisms, an air passage support plate 16 is also installed in the inner cavity of the support cylinder 2. The support plate 16 is fixedly connected to the support cylinder 2 by connecting bolts 18 and connecting seats 17. A longitudinally distributed air passage 19 is provided at its center. The bottom end of the air passage 19 is connected to the air source through a pipeline, and the top end is provided with a rotary joint 20, which is connected to each air-using mechanism through a pipeline and supplies air to them.

Claims

1. A damped turntable that can be manually adjusted, characterized in that: The turntable includes a fixed base and a rotating part. The base portion includes a base (1), a support cylinder (2) is provided on the top surface of the base (1), a first bearing (3) is sleeved on the bottom of the support cylinder (2), and a second bearing (5) is press-fitted on the top through an annular pressure plate (4). The inner rings of the first bearing (3) and the second bearing (5) are connected to the support cylinder (2), and their outer rings are connected to the turntable (6) in the rotating part. The turntable (6) is provided with two sets of adjustment mechanisms (7) on its outer wall, and the central axes of the two sets of adjustment mechanisms (7) are collinear. The adjustment mechanism includes a support sleeve (8) fixedly connected to the turntable (6). The support sleeve (8) is internally threaded with a drive sleeve (9). One end of the drive sleeve (9) exposed from the support sleeve (8) is provided with an external hexagonal end head (10). At the same time, a bolt (11) is movably connected in the inner hole of the drive sleeve (9). The end head (12) of the bolt (11) is located in a countersunk hole opened at the end of the support sleeve (8), and the other end of the bolt (11) is threadedly connected to a connecting block (13). A damping block (14) with an arc-shaped friction surface is provided on the connecting block (13). A spring (15) is also sleeved on the outside of the bolt (11). The two ends of the spring (15) are in contact with the drive sleeve (9) and the connecting block (13) respectively.

2. The damped turntable capable of manual adjustment according to claim 1, characterized in that: In the inner cavity of the support cylinder (2), there is a gas passage support plate (16). The edge of the gas passage support plate (16) is provided with a plurality of connecting seats (17) evenly distributed in the circumferential direction. The connecting seats (17) are provided with connecting bolts (18) that are threaded to the inner wall of the support cylinder (2). The center of the gas passage support plate (16) is provided with a longitudinally distributed gas passage (19). The top end of the gas passage (19) passes through a through hole opened in the center of the top surface of the turntable (6). At the same time, a rotary joint (20) is also provided at the top end of the gas passage (19), and the bottom end of the gas passage (19) is connected to the gas source through a pipeline.

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