A turntable device

Abstract

The present invention discloses a turntable device, which belongs to the field of turntable technology. The turntable device includes an azimuth turntable and a pitch turntable. The azimuth turntable includes a U-shaped frame, the U-shaped frame has a first support arm and a second support arm, and the pitch turntable includes a first support shaft and a second support shaft. The first support arm is rotatably sleeved on the first support shaft, and a butterfly spring and a locking nut are provided on the first support shaft. Wear-resistant plates are provided between one side of the first support arm and the first support shaft, and between the other side of the first support arm and the butterfly spring. The second support shaft is coaxial with the first support shaft and is spaced apart. The second support arm is rotatably sleeved on the second support shaft, and a locking handle is threadedly connected to the second support shaft. By rotating the locking handle, the second support arm can be tightened. The deformation of the butterfly spring can be changed by adjusting the locking nut, and the damping size can be adjusted. The locking handle can achieve quick and reliable locking, and the threaded connection facilitates unlocking.

Description

Technical Field

[0001] The present invention relates to the technical field of turntables, and in particular to a turntable device. Background Art

[0002] Two-dimensional high-precision turntables are widely used in aerospace, machinery manufacturing, shipbuilding and other fields, and are used as carriers to control the rotation and pitch motion of products or product parts.

[0003] Commonly used dual-axis turntables, such as Figures 1 to 3 As shown, the turntable has two support shafts 10, with a U-shaped frame 20 rotatably connected to the support shafts 10. A friction plate 30 is disposed between the U-shaped frame 20 and the support shafts 10. When the U-shaped frame 20 and the support shafts 10 rotate relative to each other, damping motion is achieved by squeezing the friction plate 30. The friction plate 30 has a very small deformation, making damping difficult to adjust and prone to wear.

[0004] Furthermore, after being rotated to the desired angle, the locking member 40 deforms to hold one support shaft 10, preventing relative rotation between the support shaft 10 and the U-shaped frame 20. The deformation of the locking member 40 requires a dedicated tool, and the locking operation direction is not aligned with the axis of the support shaft 10, which takes up space and is inconvenient to unlock after locking. Summary of the Invention

[0005] The object of the present invention is to provide a turntable device to solve the technical problems in the prior art that the damping is difficult to adjust and the locking and unlocking operations are complicated.

[0006] As conceived above, the technical solution adopted by the present invention is:

[0007] A turntable device includes an azimuth turntable and a pitch turntable, wherein the azimuth turntable includes a U-shaped frame having a first support arm and a second support arm, and the pitch turntable includes:

[0008] a first support shaft, wherein the first support arm is rotatably sleeved on the first support shaft, a butterfly spring and a locking nut are provided on the first support shaft, and wear-resistant sheets are provided between one side of the first support arm and the first support shaft and between the other side of the first support arm and the butterfly spring;

[0009] The second support shaft is coaxial with the first support shaft and is spaced apart. The second support arm is rotatably sleeved on the second support shaft. A locking handle is threadedly connected to the second support shaft. The second support arm can be tightened by rotating the locking handle.

[0010] Wherein, the azimuth turntable further includes:

[0011] A azimuth chassis, arranged at the bottom of the U-shaped frame;

[0012] An azimuth scale plate is rotatably sleeved on the azimuth chassis, and a contact surface between the azimuth scale plate and the azimuth chassis is coated with damping oil;

[0013] A plurality of friction blocks are arranged at intervals around the circumference of the azimuth chassis, and the friction blocks are located between the azimuth chassis and the azimuth scale plate.

[0014] The friction block is connected to the azimuth chassis via an azimuth screw, an azimuth threaded hole is provided on the azimuth chassis, the axis of the azimuth threaded hole is parallel to the axis of the azimuth dial, and a mounting hole is provided on the friction block, and the azimuth screw is passed through the mounting hole and the azimuth threaded hole.

[0015] Wherein, the pitch turntable further includes a screw rod, a first threaded hole is formed at one end of the second support shaft, the screw rod is connected to the first threaded hole, and the locking handle is threadedly connected to the screw rod.

[0016] In which, the screw includes a threaded portion and a smooth rod portion, the smooth rod portion is connected to one end of the threaded portion away from the locking handle, the other end of the second support shaft is provided with a countersunk hole connected to the first threaded hole, a baffle and a locking screw are provided in the countersunk hole, a second threaded hole is provided on the end face of the smooth rod portion, and the locking screw passes through the baffle and is connected to the second threaded hole.

[0017] Wherein, the pitch turntable further includes a stop block, which is sleeved on the screw and located between the locking handle and the second support arm.

[0018] Among them, the first support arm includes a first main arm and a first support that are detachably connected, and the first support is rotatably mounted on the first support shaft. The second support arm includes a second main arm and a second support that are detachably connected, and the second support is rotatably mounted on the second support shaft.

[0019] Among them, the first support shaft is a stepped shaft, the wear-resistant plate arranged on one side of the first support arm is a first wear-resistant plate, and the first wear-resistant plate can abut against the first support shaft, and the wear-resistant plate arranged on the other side of the first support arm is a second wear-resistant plate, and the second wear-resistant plate can abut against the butterfly spring.

[0020] There are two butterfly springs, which are arranged back to back, and a gasket is provided between the locking nut and the butterfly spring.

[0021] Wherein, the pitch turntable further includes a support frame, and the first support shaft and the second support shaft are both fixedly connected to the support frame.

[0022] Beneficial effects of the present invention:

[0023] The turntable device proposed in the present invention has the following characteristics: during pitch motion, the azimuth turntable remains stationary, while the pitch turntable rotates. At this time, the first support shaft and the second support shaft rotate around their own axes. Since the locking nut squeezes the butterfly spring, friction damping is generated between the first support arm and the first support shaft, and between the first support arm and the butterfly spring. After rotating to an appropriate angle, the locking handle is rotated to press against the second support arm, so that the second support arm and the second support shaft do not rotate relative to each other, thereby achieving the purpose of locking. The turntable device proposed in the present invention can change the deformation of the butterfly spring by adjusting the locking nut, and thus can adjust the damping size. The locking handle can achieve fast and reliable locking, and the threaded connection is easy to unlock, so it is easy to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of an existing dual-axis turntable;

[0025] Figure 2 yes Figure 1 A magnified view of point A;

[0026] Figure 3 It is a side view of an existing dual-axis turntable;

[0027] Figure 4 is a front view of a turntable device provided by an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of a partial structure of a turntable device provided by an embodiment of the present invention. Figure 1 ;

[0029] Figure 6 yes Figure 5 Side view of

[0030] Figure 7 yes Figure 5 Partial structure diagram Figure 1 ;

[0031] Figure 8 yes Figure 5 Partial structure diagram Figure 2 ;

[0032] Figure 9 This is a schematic diagram of a partial structure of a turntable device provided by an embodiment of the present invention. Figure 2 ;

[0033] Figure 10 yes Figure 9 A side sectional view of

[0034] Figure 11 yes Figure 10Schematic diagram of part of the structure.

[0035] Figures 1 to 3 middle:

[0036] 10. Support shaft; 20. U-shaped frame; 30. Friction plate; 40. Locking piece; 50. Locking screw; 60. Scale plate; 70. Axis shaft seat;

[0037] Figures 4 to 11 middle:

[0038] 11. First support arm; 111. First main arm; 112. First support; 12. Second support arm; 121. Second main arm; 122. Second support; 13. Indicator; 14. Azimuth chassis; 15. Azimuth dial; 16. Friction block; 17. Azimuth screw; 18. Azimuth housing; 19. Level bubble;

[0039] 21. Support frame; 221. First support shaft; 222. Second support shaft; 223. Screw; 231. Butterfly spring; 232. Locking nut; 24. Locking handle; 251. First wear-resistant plate; 252. Second wear-resistant plate; 261. Block plate; 262. Locking screw; 27. Stop block; 28. Pitch scale. DETAILED DESCRIPTION

[0040] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but are not to be construed as limiting the present invention.

[0041] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0044] See also Figures 4 to 11 An embodiment of the present invention provides a turntable device comprising an azimuth turntable and a pitch turntable. The azimuth turntable and the pitch turntable are detachably connected and capable of relative rotation. During azimuth adjustment, the azimuth turntable rotates about a first axis, and the pitch turntable rotates with the azimuth turntable. During pitch adjustment, the azimuth turntable remains stationary, while the pitch turntable rotates about a second axis, with the first axis being perpendicular to the second axis.

[0045] The tilt turntable includes a support frame 21 and support shafts. There are two support shafts, namely a first support shaft 221 and a second support shaft 222. The first support shaft 221 and the second support shaft 222 are coaxial and spaced apart. The first support shaft 221 and the second support shaft 222 are both fixedly connected to the support frame 21. The second axis is the axis of the first support shaft 221.

[0046] The azimuth turntable includes a U-shaped frame and an azimuth assembly. The U-shaped frame is detachably connected to the pitch turntable, and the azimuth assembly is disposed at the bottom of the U-shaped frame. Specifically, the U-shaped frame has a first support arm 11 and a second support arm 12. The first support arm 11 is rotatably mounted on a first support shaft 221, and the second support arm 12 is rotatably mounted on a second support shaft 222.

[0047] To facilitate disassembly, the first support arm 11 and the second support arm 12 are both split structures. The first support arm 11 includes a detachably connected first main arm 111 and a first support 112, which is rotatably mounted on a first support shaft 221. The second support arm 12 includes a detachably connected second main arm 121 and a second support 122, which is rotatably mounted on a second support shaft 222.

[0048] Specifically, the first main arm 111 is connected to the first support 112 via a first bolt, and the second main arm 121 is connected to the second support 122 via a second bolt.

[0049] See also Figure 7 and Figure 8 A butterfly spring 231 and a locking nut 232 are provided on the first support shaft 221, and wear-resistant plates are provided between one side of the first support arm 11 and the first support shaft 221, as well as between the other side of the first support arm 11 and the butterfly spring 231; a locking handle 24 is threadedly connected to the second support shaft 222, and the second support arm 12 can be tightened by rotating the locking handle 24.

[0050] During pitch motion, the azimuth turntable remains stationary while the pitch turntable rotates. Due to the compression of the butterfly spring 231 by the locking nut 232, friction damping is generated between the first support arm 11 and the first support shaft 221, and between the first support arm 11 and the butterfly spring 231. After rotating to an appropriate angle, the locking handle 24 is rotated to press against the second support arm 12, so that the second support arm 12 and the second support shaft 222 do not rotate relative to each other, thereby achieving the purpose of locking. The turntable device proposed in the present invention can change the deformation of the butterfly spring 231 by adjusting the locking nut 232, thereby adjusting the damping size. The locking handle 24 can achieve quick and reliable locking, and the threaded connection facilitates unlocking, making it easy to adjust.

[0051] Specifically, the first support shaft 221 is a stepped shaft, and the first support 112 of the first support arm 11 is sleeved on the first support shaft 221. The wear-resistant sheet provided on one side of the first support arm 11 is a first wear-resistant sheet 251, which can abut against the first support shaft 221. The wear-resistant sheet provided on the other side of the first support arm 11 is a second wear-resistant sheet 252, which can abut against the butterfly spring 231.

[0052] The first wear-resistant plate 251 is connected to the first support 112 via a first screw, and the second wear-resistant plate 252 is connected to the first support 112 via a second screw.

[0053] The first wear-resistant plate 251 and the second wear-resistant plate 252 are both made of heat-treated wear-resistant steel to ensure long service life.

[0054] There are two butterfly springs 231, which are arranged back to back. A washer is provided between the lock nut 232 and the butterfly spring 231. The washer is made of wear-resistant material.

[0055] See also Figure 6 and Figure 7 The pitch turntable further includes a pitch scale 28, which is fixedly connected to the first support shaft 221. The azimuth turntable further includes an indicator 13, which is fixedly connected to the first support arm 11. When the pitch turntable rotates, the pitch scale 28 and the indicator 13 rotate relative to each other, thereby indicating the angle of rotation.

[0056] See also Figure 8 The pitch turntable also includes a screw 223, a first threaded hole is opened at one end of the second support shaft 222, the screw is connected to the first threaded hole, and the locking handle 24 is threadedly connected to the screw 223 for easy installation and disassembly.

[0057] The processing difficulty is reduced by installing the screw rod 223 on the second support shaft 222 and then threading it with the locking handle 24.

[0058] The screw rod 223 includes a threaded portion and a polished portion. The polished portion is connected to the end of the threaded portion away from the locking handle 24. The other end of the second support shaft 222 is provided with a countersunk hole connected to the first threaded hole. A stopper 261 and a locking screw 262 are disposed in the countersunk hole. A second threaded hole is provided on the end surface of the polished portion. The locking screw 262 passes through the stopper 261 and is connected to the second threaded hole. The stopper 261 is made of a wear-resistant material.

[0059] During pitch movement, it can be locked and fixed at an appropriate angle, specifically by rotating the locking handle 24. As the locking handle 24 rotates, the locking handle 24 moves axially along the screw 223 to axially tighten the locking handle 24, the second support arm 12 and the second support shaft 222, so that the locking is firm, thereby preventing the pitch turntable and the azimuth turntable from rotating relative to each other.

[0060] The locking handle 24 is a plum blossom handle, which is easy to hold.

[0061] The pitch turntable further comprises a butt block 27, which is sleeved on the screw and located between the locking handle 24 and the second support arm 12. When the locking handle 24 is rotated, the locking handle 24 can press against the butt block 27.

[0062] The contact surface between the stop block 27 and the locking handle 24 is a stepped surface with a relatively large surface roughness, so as to increase the friction between the stop block 27 and the locking handle 24 and ensure a stable locking.

[0063] For existing dual-axis rotary tables, see Figure 3 After the azimuth is rotated to the required angle, it is necessary to tighten the locking screw 50 to stop the relative rotation between the scale plate 60 and the azimuth shaft seat 70. The locking screw 50 is small, easy to lose, and difficult to apply force, making the locking process time-consuming and labor-intensive.

[0064] See also Figure 11The azimuth assembly of the azimuth turntable provided in this embodiment includes an azimuth chassis 14, an azimuth scale 15, and several friction blocks 16. The azimuth chassis 14 is mounted at the bottom of a U-shaped frame, and the azimuth scale 15 is rotatably mounted on the azimuth chassis 14. Damping oil is applied to the contact surface between the azimuth scale 15 and the azimuth chassis 14. Several friction blocks 16 are spaced apart around the circumference of the azimuth chassis 14, and are located between the azimuth chassis 14 and the azimuth scale 15. The clearance fit between the azimuth scale 15 and the azimuth chassis 14 is H7 / h6.

[0065] When adjusting the azimuth, the azimuth turntable rotates around the center line of the azimuth chassis 14, that is, the first axis is the center line of the azimuth chassis 14. When the azimuth turntable rotates, the pitch turntable rotates along with the azimuth turntable.

[0066] Specifically, when in use, the azimuth turntable is installed on the supporting platform. A center hole is opened at the bottom of the azimuth chassis 14, and a protrusion is provided on the supporting platform. The protrusion is inserted into the center hole. By applying force to the U-shaped frame, the azimuth turntable can be rotated around the center line of the center hole.

[0067] Furthermore, a threaded hole is provided on the azimuth chassis 14 and is connected to the center hole. A positioning rod is provided on the support platform, and the positioning rod can be connected to the threaded hole to lock the azimuth turntable. When the azimuth turntable is rotated to a suitable angle, the positioning rod is used to lock the azimuth turntable, and the azimuth dial 15 can be adjusted at this time.

[0068] When the azimuth scale plate 15 is rotated, the damping oil plays a damping role, and the friction block 16 plays a damping role. The arrangement of the friction block 16 ensures that the azimuth scale plate 15 does not rotate freely with the azimuth chassis 14 and can only rotate under the effect of an external force.

[0069] Specifically, the friction block 16 is connected to the azimuth chassis 14 through an azimuth screw 17. An azimuth threaded hole is provided on the azimuth chassis 14. The axis of the azimuth threaded hole is parallel to the axis of the azimuth dial 15. A mounting hole is provided on the friction block 16. The azimuth screw 17 is passed through the mounting hole and the azimuth threaded hole.

[0070] The azimuth assembly also includes an azimuth housing 18 and a level bubble 19. The azimuth housing 18 is positioned between the U-shaped frame and the azimuth chassis 14, shielding the gap between the azimuth dial 15 and the chassis 14 and providing waterproofing. The level bubble 19 is mounted on the azimuth housing 18 to indicate levelness.

[0071] In summary, the turntable device provided in this embodiment is used as follows:

[0072] When adjusting the azimuth, force is applied to the U-shaped frame to rotate the azimuth turntable, and the pitch turntable rotates with the azimuth turntable. When the azimuth turntable rotates to a suitable angle, the azimuth turntable is locked by the positioning rod, and the azimuth dial 15 can be adjusted at this time.

[0073] Furthermore, the azimuth dial 15 is rotated, and the damping oil between the azimuth dial 15 and the azimuth chassis 14 plays a damping role, while the friction block 16 plays a damping role, so that the azimuth dial 15 indicates the corresponding position.

[0074] During the pitch movement, the azimuth turntable remains stationary, so that the pitch turntable rotates relative to the azimuth turntable, that is, the support frame 21 rotates relative to the U-shaped frame, and the first support shaft 221 and the second support shaft 222 rotate. Since the locking nut 232 squeezes the butterfly spring 231, friction damping is generated between the first support arm 11 and the first support shaft 221 and between the first support arm 11 and the butterfly spring 231. After rotating to an appropriate angle, the locking handle 24 is rotated to press against the second support arm 12, so that the second support arm 12 will not rotate relative to the second support shaft 222, thereby achieving the purpose of locking.

[0075] The turntable device provided in this embodiment changes the existing turntable damping adjustment method and locking method to meet on-site use requirements. It is stable and durable, can be locked quickly and reliably, is made of corrosion-resistant materials, and is easy to maintain.

[0076] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A turntable device, characterized in that: The invention comprises an azimuth turntable and a pitch turntable, wherein the azimuth turntable comprises a U-shaped frame, wherein the U-shaped frame has a first support arm (11) and a second support arm (12), and the pitch turntable comprises: A first support shaft (221), the first support arm (11) is rotatably sleeved on the first support shaft (221), a butterfly spring (231) and a locking nut (232) are provided on the first support shaft (221), and wear-resistant plates are provided between one side of the first support arm (11) and the first support shaft (221) and between the other side of the first support arm (11) and the butterfly spring (231); a second support shaft (222) coaxial with and spaced from the first support shaft (221); the second support arm (12) is rotatably sleeved on the second support shaft (222); a locking handle (24) is threadedly connected to the second support shaft (222); and the second support arm (12) can be tightened by rotating the locking handle (24); The pitch turntable further comprises a screw (223), one end of the second support shaft (222) is provided with a first threaded hole, the screw (223) is connected to the first threaded hole, and the locking handle (24) is threadedly connected to the screw (223); The screw rod (223) includes a threaded portion and a smooth rod portion, the smooth rod portion is connected to an end of the threaded portion away from the locking handle (24), the other end of the second support shaft (222) is provided with a countersunk hole connected to the first threaded hole, a baffle (261) and a locking screw (262) are provided in the countersunk hole, a second threaded hole is provided on the end surface of the smooth rod portion, and the locking screw (262) passes through the baffle (261) and is connected to the second threaded hole; Two butterfly springs (231) are provided, and the two butterfly springs (231) are arranged back to back. A gasket is provided between the locking nut (232) and the butterfly spring (231).

2. The turntable device according to claim 1, characterized in that: The azimuth turntable also includes: A azimuth chassis (14) is arranged at the bottom of the U-shaped frame; An azimuth scale plate (15) is rotatably sleeved on the azimuth chassis (14), and a contact surface between the azimuth scale plate (15) and the azimuth chassis (14) is coated with damping oil; A plurality of friction blocks (16) are arranged at intervals around the circumference of the azimuth chassis (14), and the friction blocks (16) are located between the azimuth chassis (14) and the azimuth scale plate (15).

3. The turntable device according to claim 2, characterized in that: The friction block (16) is connected to the azimuth chassis (14) via an azimuth screw (17); an azimuth threaded hole is provided on the azimuth chassis (14); the axis of the azimuth threaded hole is parallel to the axis of the azimuth scale (15); a mounting hole is provided on the friction block (16); and the azimuth screw (17) is passed through the mounting hole and the azimuth threaded hole.

4. The turntable device according to claim 1, wherein: The pitch turntable further comprises a stop block (27), which is sleeved on the screw rod and located between the locking handle (24) and the second support arm (12).

5. The turntable device according to claim 1, wherein: The first support arm (11) comprises a detachably connected first main arm (111) and a first support (112), wherein the first support (112) is rotatably sleeved on the first support shaft (221), and the second support arm (12) comprises a detachably connected second main arm (121) and a second support (122), wherein the second support (122) is rotatably sleeved on the second support shaft (222).

6. The turntable device according to claim 1, wherein: The first support shaft (221) is a stepped shaft, the wear-resistant plate arranged on one side of the first support arm (11) is a first wear-resistant plate (251), and the first wear-resistant plate (251) can abut against the first support shaft (221), and the wear-resistant plate arranged on the other side of the first support arm (11) is a second wear-resistant plate (252), and the second wear-resistant plate (252) can abut against the butterfly spring (231).

7. The turntable device according to any one of claims 1 to 6, characterized in that: The pitch turntable further comprises a support frame (21), and the first support shaft (221) and the second support shaft (222) are both fixedly connected to the support frame (21).

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