Electromagnetic compatibility laboratory tested object rotary table device

Abstract

The utility model provides a tested object turntable device for an electromagnetic compatibility laboratory. The tested object turntable device comprises a base, a main shaft, a turntable, a fixed disc and a control disc, the main shaft is rotatably connected to the base, the rotating disc is fixedly arranged at the top end of the main shaft and can rotate along with rotation of the main shaft, the fixed disc is arranged below the rotating disc and fixedly connected to the outer surface of the main shaft in a sleeving mode, the control disc is slidably connected to the outer surface of the main shaft in a sleeving mode and located between the rotating disc and the fixed disc, and a plurality of inserting holes are formed in the upper disc face of the fixed disc. A plurality of inserting rods are correspondingly arranged on the lower disc face of the control disc, when the control disc slides downwards along the main shaft, the inserting rods can be driven to be inserted into the inserting holes, the lower portion of the fixing disc is sleeved with a synchronous frame in a sliding mode, the upper end of the synchronous frame is fixedly connected with the control disc, a power telescopic rod is installed on the bottom face of the synchronous frame, and the lower end of the power telescopic rod is installed on the base. According to the device, the inserted link is arranged on the control disc and can be inserted into the insertion hole in the fixed disc, so that the main shaft cannot be deflected when the main shaft is fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic compatibility experiment turntables, in particular to a turntable device for an object to be measured in an electromagnetic compatibility laboratory. Background Art

[0002] An electromagnetic compatibility (EMC) laboratory is a specialized laboratory established for conducting EMC testing. A complete EMC laboratory typically consists of two types: an anechoic chamber and a shielded room. A shielded room is a hexagonal metal room with a spliced ​​or welded structure. An anechoic chamber is used for conducting radiated emission and radiated immunity tests. Based on the test distance, it is divided into 3m and 10m anechoic chambers. The 10 meters and 3 meters refer to the distance between the test object and the antenna. A 10-meter anechoic chamber is typically a 10-meter semi-anechoic chamber, an enclosed space with absorbing material on all five sides except the ground. The metal floor simulates a non-reflective, open space.

[0003] The measurement accuracy of electromagnetic compatibility testing depends largely on the functional accuracy and RF noise level of the positioning system. The positioning device includes a turntable and an elevator. After the power structure stops outputting power to the turntable, the existing turntable is generally fixed at an angle by clamping the turntable with a tooth-like structure installed on the turntable. However, due to the gaps between adjacent teeth during the fixation process, the turntable is prone to slight deflection when the tooth-like structure is fixed, resulting in inaccurate testing. Summary of the Invention

[0004] In view of this, the utility model proposes a turntable device for an electromagnetic compatibility laboratory object to be tested, comprising a base, a main shaft, a turntable, a fixed disk and a control disk; the main shaft can be rotatably connected to the base, the turntable is fixedly arranged at the top end of the main shaft and can rotate with the rotation of the main shaft, the fixed disk is arranged under the turntable and fixedly sleeved on the outer surface of the main shaft, the control disk is slidably sleeved on the outer surface of the main shaft and is located between the turntable and the fixed disk, the upper disk surface of the fixed disk is provided with a plurality of jacks, the control disk The lower plate surface of the disk is provided with a plurality of plug rods. When the control disk slides downward along the main shaft, it can drive the plug rods to be inserted into the plug holes, thereby fixing the fixed disk and further preventing the main shaft from driving the turntable to rotate. A synchronous frame is slidably sleeved under the fixed disk, and the upper end of the synchronous frame is fixedly connected to the control disk. A power telescopic rod is installed on the bottom surface of the synchronous frame, and the lower end of the power telescopic rod is installed on the base. The power telescopic rod can drive the control disk to move up and down through the synchronous frame.

[0005] Furthermore, the synchronous frame includes a plurality of "J"-shaped rods and an irregular sleeve disk, and the plurality of "J"-shaped rods are invertedly connected to the periphery of the disk surface of the control disk, and the downward end of the "J"-shaped rod is connected to the sleeve disk, and the sleeve disk is slidably sleeved on the main shaft. One end of the power telescopic rod is connected to the bottom of the sleeve disk, and the other end is connected to the base. The power telescopic rod can drive the sleeve disk to move up and down, thereby transmitting power to the control disk through the "J"-shaped rod, and then driving the control disk to move up and down along the main shaft.

[0006] Furthermore, an intermediate disk with the same diameter as the control disk is provided below the control disk, and the intermediate disk can be slidably mounted on the outer surface of the main shaft. The outer ring surface of the control disk and the outer ring surface of the intermediate disk are fixedly connected by a plurality of connecting plates. Corresponding through holes are provided on the intermediate disk corresponding to the insertion rods. The free end of the insertion rod passes through the through hole and extends to the top of the fixed disk, and can move downward with the control disk, thereby being inserted into the socket on the fixed disk.

[0007] Furthermore, the insertion rod is connected to the control disk through an elastic plate, one end of the elastic plate is connected to the control disk, and the other end is connected to the insertion rod, and the length of the elastic plate is less than the preset distance between the control disk and the intermediate disk, so that one end of the insertion rod connected to the elastic plate is exposed on the upper disk surface of the intermediate disk.

[0008] Furthermore, a power assembly is provided on the base corresponding to the main shaft, and the power assembly includes a motor, a driving gear and a driven gear; the driven gear is provided below the synchronous frame and is fixedly sleeved on the outer surface of the main shaft, and a plurality of elastic telescopic rods are installed on the circumferential side of the motor, and the lower ends of the elastic telescopic rods are fixedly connected to the base, the driving gear is fixedly sleeved on the output end of the motor, and the driven gear is meshed with the driving gear. When the motor rotates, the main shaft is driven to rotate through the meshing relationship between the driving gear and the driven gear.

[0009] Furthermore, a concentric rod is installed on the upper surface of the driving gear, and a concentric push rod is correspondingly provided above the concentric rod. The concentric push rod is fixedly connected to the synchronization frame. The concentric push rod, the concentric rod and the driving gear are coaxially arranged. When the concentric push rod applies a thrust downward to the concentric rod, it pushes the elastic telescopic rod to compress, thereby disengaging the driving gear from the driven gear.

[0010] Furthermore, the upper ends of the concentric rods are inlaid with balls, and the balls can reduce the friction resistance encountered by the concentric push rod when in contact with the concentric rods, thereby reducing wear.

[0011] Furthermore, two elastic telescopic rods are provided, the lower ends of the two elastic telescopic rods are fixedly connected to the base, the elastic telescopic rods are arranged parallel to the axis of the motor and the axis of the main shaft, and the two elastic telescopic rods are symmetrically distributed left and right with the axis of the motor as the center.

[0012] Furthermore, the plurality of sockets are in a ring shape and are evenly distributed in a circular array around the axis of the main shaft. The diameters of the plurality of sockets gradually decrease from the side close to the main shaft outward, and the sockets between adjacent rings are staggered.

[0013] Furthermore, the insertion rods are arranged correspondingly to the insertion holes, and their distribution states and diameters are arranged in a one-to-one correspondence with the states of the insertion holes.

[0014] The utility model provides an electromagnetic compatibility laboratory test object turntable device, which has the following advantages: by setting the socket, elastic plate and plug rod, when the main shaft needs to be fixed, the control plate, elastic plate and plug rod are driven downward by the synchronous frame, and when the plug rod contacts the fixed plate, due to the staggered distribution of the sockets distributed in a plurality of rings, the plug rod directly corresponds to the corresponding socket when it moves downward, and the staggered socket and plug rod, and the elastic plate push the plug rod to squeeze the fixed plate, and at the same time, when the plug rod continues to move downward, it is in contact with the plug rod. The coaxial plug rod is inserted into the socket, and the misaligned plug rod and socket push the elastic plate to bend when the control disk moves downward, so that the main shaft will not be deflected when the main shaft is fixed; by arranging the elastic telescopic rod, the concentric push rod and the concentric circular rod, when the synchronous frame moves downward, the concentric push rod pushes the concentric circular rod, pushing the elastic telescopic rod to compress, so that the driving gear moves downward and disengages from the driven gear, and then the plug rod will contact the fixed disk, preventing the motor from stopping in time when the plug rod is inserted into the socket, causing interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0016] Figure 1 A schematic diagram of the overall structure of the turntable device provided in an embodiment of the utility model;

[0017] Figure 2 A schematic structural diagram of the connection between the elastic telescopic rod and the motor provided in an embodiment of the utility model;

[0018] Figure 3 A front view of the middle portion of the turntable device provided in an embodiment of the present utility model;

[0019] Figure 4 A schematic diagram of the connection between the elastic plate and the plug rod provided in an embodiment of the present utility model;

[0020] Figure 5 A schematic top view of the fixed plate provided in an embodiment of the present utility model;

[0021] 1. Base, 2. Spindle, 3. Fixed plate, 4. Control plate, 5. Turntable, 6. Synchronous frame, 7. Intermediate plate, 8. Power assembly;

[0022] 31. Socket, 41. Insert rod, 42. Elastic plate, 43. Connecting plate, 71. Through hole, 61. "J"-shaped rod, 62. Sleeve disc, 63. Power telescopic rod, 64. Concentric push rod, 81. Motor, 82. Driving gear, 83. Driven gear, 84. Elastic telescopic rod, 85. Concentric rods, 86. Ball bearing. DETAILED DESCRIPTION

[0023] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] See also Figure 1 , which is an electromagnetic compatibility laboratory test object turntable device provided by an embodiment of the present utility model, including a base 1, a main shaft 2, a turntable 5, a fixed disk 3 and a control disk 4; the main shaft 2 is rotatably connected to the base 1, the turntable 5 is fixedly arranged at the top of the main shaft 2, and can rotate with the rotation of the main shaft 2, the fixed disk 3 is arranged under the turntable 5, and is fixedly sleeved on the outer surface of the main shaft 2, the control disk 4 is slidably sleeved on the outer surface of the main shaft 2, and is located between the turntable 5 and the fixed disk 3, the upper disk surface of the fixed disk 3 is provided with a plurality of jacks 31, the control disk 4 is provided with a plurality of jacks 31, and the control disk 4 is provided with a plurality of jacks 31. A plurality of plug rods 41 are correspondingly provided on the lower disk surface of the disk 4. When the control disk 4 slides downward along the main shaft 2, it can drive the plug rod 41 to be inserted into the socket 31, thereby fixing the fixed disk 3, and further preventing the main shaft 2 from driving the turntable 5 to rotate. A synchronous frame 6 is slidably sleeved under the fixed disk 3, and the upper end of the synchronous frame is fixedly connected to the control disk. A power telescopic rod is installed on the bottom surface of the synchronous frame, and the lower end of the power telescopic rod 63 is installed on the base 1. The power telescopic rod 63 can drive the control disk 4 to move up and down through the synchronous frame 6.

[0025] Reference Figure 1-3 As shown, the synchronization frame 6 includes multiple "J"-shaped rods 61 and an irregular sleeve 62. Multiple "J"-shaped rods 61 are upside down and connected to the periphery of the disk surface of the control disk 4. The downward end of the "J"-shaped rod 61 is connected to the sleeve 62. The sleeve 62 is slidably sleeved on the main shaft 2. One end of the power telescopic rod 63 is connected to the bottom of the sleeve 62, and the other end is connected to the base 1. The power telescopic rod 63 can drive the sleeve 62 to move up and down, thereby transmitting power to the control disk 4 through the "J"-shaped rod 61, and then driving the control disk 4 to move up and down along the main shaft 2.

[0026] Reference Figure 2-4 As shown, an intermediate disk 7 with the same diameter as the control disk 4 is also provided below the control disk 4, and the intermediate disk 7 can be slidably mounted on the outer surface of the main shaft 2. The outer ring surface of the control disk 4 and the outer ring surface of the intermediate disk 7 are fixedly connected by a plurality of connecting plates 43. A corresponding through hole 71 is provided on the intermediate disk 7 corresponding to the insertion rod 41. The free end of the insertion rod 41 passes through the through hole 71 and extends to the top of the fixed disk 3, and can move downward with the control disk 4, thereby being inserted into the socket 31 on the fixed disk 3.

[0027] Reference Figure 4 As shown, the insertion rod 41 is connected to the control disk 4 via an elastic plate 42. One end of the elastic plate 42 is connected to the control disk 4, and the other end is connected to the insertion rod 41. The length of the elastic plate 42 is less than the preset distance between the control disk 4 and the intermediate disk 7, so that the end of the insertion rod 41 connected to the elastic plate 42 is exposed on the upper disk surface of the intermediate disk 7. In this embodiment, the elastic plate 42 acts as a spring. When pressure is applied to the elastic plate 42, the intermediate disk 7 ensures that the insertion rod 41 can only move up and down, and the elastic plate 42 applies a downward thrust to the insertion rod 41. Because the insertion rod 41 is difficult to insert into the socket 31 due to frictional resistance between the insertion rod 41 and the inner wall of the socket 31, the cooperation between the elastic plate 42 and the intermediate disk 7 can solve this problem.

[0028] Continue to refer to Figure 1-3As shown, a power assembly 8 is provided on the base 1 corresponding to the main shaft 2, and the power assembly 8 includes a motor 81, a driving gear 82 and a driven gear 83; the driven gear 83 is provided below the synchronous frame 6, and is fixedly sleeved on the outer surface of the main shaft 2, and a plurality of elastic telescopic rods 84 are installed on the circumferential side of the motor 81, and the lower ends of the elastic telescopic rods 84 are fixedly connected to the base 1, the driving gear 82 is fixedly sleeved on the output end of the motor 81, and the driven gear 83 is meshed with the driving gear 82. When the motor 81 rotates, the main shaft 2 is driven to rotate through the meshing relationship between the driving gear 82 and the driven gear 83.

[0029] Reference Figure 2-3 As shown, a concentric rod 85 is installed on the upper surface of the driving gear 82, and a concentric push rod 64 is correspondingly provided above the concentric rod 85. The concentric push rod 64 is fixedly connected to the synchronous frame 6. The concentric push rod 64, the concentric rod 85 and the driving gear 82 are coaxially arranged. When the concentric push rod 64 applies a thrust downward to the concentric rod 85, the elastic telescopic rod 84 is pushed to compress, thereby disengaging the driving gear 82 from the driven gear 83.

[0030] Continue to refer to Figure 2-3 As shown, the upper end of the concentric rod 85 is embedded with a ball 86, and the ball 86 can reduce the friction resistance encountered by the concentric push rod 64 and the concentric rod 85 when they contact each other, thereby reducing wear.

[0031] Reference Figure 1-3 As shown, two elastic telescopic rods 84 are provided, the lower ends of the two elastic telescopic rods 84 are fixedly connected to the base 1, the elastic telescopic rods 84 are arranged parallel to the axis of the motor 81 and the axis of the main shaft 2, and the two elastic telescopic rods 84 are symmetrically distributed left and right with the axis of the motor 81 as the center.

[0032] Reference Figure 4-5 As shown, the plurality of the sockets 31 are in a ring shape and are evenly distributed in a circular array around the axis of the main shaft 2. The diameters of the plurality of the sockets 31 gradually decrease from the side close to the main shaft 2 outward, and the sockets 31 between adjacent rings are staggered.

[0033] Continue to refer to Figure 4 As shown, the insertion rod 41 is arranged correspondingly to the insertion hole 31, and its distribution state and diameter size are arranged in a one-to-one correspondence with the state of the insertion hole 31.

[0034] The working principle of the electromagnetic compatibility laboratory test object turntable device disclosed in the embodiment of the utility model is as follows:

[0035] When the angle of the main shaft 2 needs to be changed, the power telescopic rod 63 drives the insertion rod 41 to move gradually upward, and at the same time, the elastic telescopic rod 84 gradually pushes the motor 81 upward to make the driving gear 82 mesh with the driven gear 83. The motor 81 can drive the main shaft 2 to rotate. When the angle of the main shaft 2 needs to be fixed, the power telescopic rod 63 drives the control plate 4, the concentric push rod 64, the elastic plate 42 and the insertion rod 41 to move downward through the synchronous frame 6. When the concentric push rod 64 moves downward and contacts the concentric rod 85 and continues to move, it pushes the elastic telescopic rod 84 to compress, causing the driving gear 82 to move downward and disengage from the driven gear 83. When the control disk 4 is closed, the rod 41 will contact the fixed disk 3. Since the multiple annular sockets 31 are staggered, the rod 41 directly corresponds to the corresponding socket 31 when the rod 41 moves downward, and the elastic plate 42 pushes the rod 41 to squeeze the fixed disk 3 when the staggered socket 31 and the control disk 4 move downward. At the same time, when the rod 41 continues to move downward, the rod 41 coaxial with the socket 31 is inserted into the socket 31, and the staggered rod 41 and the socket 31 push the elastic plate 42 to bend when the control disk 4 moves downward, so that the main shaft 2 will not be deflected when the main shaft 2 is fixed.

[0036] The embodiment of the utility model discloses an electromagnetic compatibility laboratory test object turntable device, which has the following beneficial technical effects: by setting the socket, elastic plate and plug rod, when the main shaft needs to be fixed, the control plate, elastic plate and plug rod are driven to move downward by the synchronous frame, and when the plug rod contacts the fixed plate, due to the staggered distribution of the sockets distributed in a plurality of rings, the plug rod directly corresponds to the corresponding socket when it moves downward, and the staggered socket and plug rod, the elastic plate pushes the plug rod to squeeze the fixed plate, and at the same time, the plug rod continues to move downward. When the cam is in the state of rotation and the cam is in the state of rotation, the spring which is in the state of rotation of the drive shaft is turned and the spring which is in the state of rotation of the drive shaft is turned and the cam is turned, the cam is turned and the cam is turned, so that the cam is turned and the cam is turned.

[0037] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0038] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A turntable device for an object under test in an electromagnetic compatibility laboratory, characterized in that:

7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod has a round shank to contact with said linking rod.

2. The electromagnetic compatibility laboratory test object turntable device according to claim 1, characterized in that: The synchronous frame includes multiple "J"-shaped rods and an irregular sleeve disk. Multiple "J"-shaped rods are upside down and connected to the periphery of the disk surface of the control disk. The downward end of the "J"-shaped rod is connected to the sleeve disk. The sleeve disk is slidably sleeved on the main shaft. One end of the power telescopic rod is connected to the bottom of the sleeve disk, and the other end is connected to the base. The power telescopic rod can drive the sleeve disk to move up and down, thereby transmitting power to the control disk through the "J"-shaped rod, and then driving the control disk to move up and down along the main shaft.

3. The electromagnetic compatibility laboratory test object turntable device according to claim 1, characterized in that: An intermediate disk with the same diameter as the control disk is also provided below the control disk. The intermediate disk can be slidably mounted on the outer surface of the main shaft. The outer ring surface of the control disk and the outer ring surface of the intermediate disk are fixedly connected by a plurality of connecting plates. Corresponding through holes are provided on the intermediate disk corresponding to the insertion rods. The free end of the insertion rod passes through the through hole and extends to the top of the fixed disk. It can move downward with the control disk, thereby being inserted into the insertion hole on the fixed disk.

4. The electromagnetic compatibility laboratory test object turntable device according to claim 3, characterized in that: The insertion rod is connected to the control disk through an elastic plate. One end of the elastic plate is connected to the control disk, and the other end is connected to the insertion rod. The length of the elastic plate is less than the preset distance between the control disk and the intermediate disk, so that one end of the insertion rod connected to the elastic plate is exposed on the upper disk surface of the intermediate disk.

5. The electromagnetic compatibility laboratory test object turntable device according to any one of claims 1 to 4, characterized in that: A power assembly is provided on the base corresponding to the main shaft, and the power assembly includes a motor, a driving gear and a driven gear; the driven gear is provided below the synchronous frame and is fixedly sleeved on the outer surface of the main shaft, a plurality of elastic telescopic rods are installed on the circumferential side of the motor, the lower ends of the elastic telescopic rods are fixedly connected to the base, the driving gear is fixedly sleeved on the output end of the motor, and the driven gear is meshed with the driving gear. When the motor rotates, the main shaft is driven to rotate through the meshing relationship between the driving gear and the driven gear.

6. The electromagnetic compatibility laboratory test object turntable device according to claim 5, characterized in that: A concentric rod is installed on the upper surface of the driving gear, and a concentric push rod is correspondingly provided above the concentric rod. The concentric push rod is fixedly connected to the synchronization frame. The concentric push rod, the concentric rod and the driving gear are coaxially arranged. When the concentric push rod applies a thrust downward to the concentric rod, the elastic telescopic rod is pushed to compress, thereby disengaging the driving gear from the driven gear.

7. The electromagnetic compatibility laboratory test object turntable device according to claim 6, characterized in that: The upper ends of the concentric rods are inlaid with balls, which can reduce the friction resistance encountered by the concentric push rod when in contact with the concentric rods, thereby reducing wear.

8. The electromagnetic compatibility laboratory test object turntable device according to any one of claims 6-7, characterized in that: Two elastic telescopic rods are provided, the lower ends of the two elastic telescopic rods are fixedly connected to the base, the elastic telescopic rods are arranged parallel to the axis of the motor and the axis of the main shaft, and the two elastic telescopic rods are symmetrically distributed left and right with the axis of the motor as the center.

9. The electromagnetic compatibility laboratory test object turntable device according to claim 1, characterized in that: The plurality of sockets are in a ring shape and are evenly distributed in a circular array around the axis of the main shaft. The diameters of the plurality of sockets gradually decrease from the side close to the main shaft outward, and the sockets between adjacent rings are staggered.

10. The electromagnetic compatibility laboratory test object turntable device according to claim 9, characterized in that: The insertion rods are arranged correspondingly to the insertion holes, and their distribution states and diameters are arranged in a one-to-one correspondence with the states of the insertion holes.

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