CN210160744U - Bearing type rotary table - Google Patents

Abstract

The utility model discloses a bearing type turntable, which comprises an outer frame, a driving device, a pin gear device, a structural frame and a supporting device; the driving device, the pin tooth device, the structural frame and the supporting device are all arranged on the inner side of the outer frame; the supporting device is placed at the bottom of the pin gear device, the structure frame is located at the top of the pin gear device, a fluted disc is arranged at the output end of the driving device, and the fluted disc is meshed with the pin gear device. The revolving stage passes through the accurate modulus cooperation of pin pole and tooth, increases the whole transmission precision of revolving stage, operates steadily and noiselessness, and the pin tooth device can utilize servo motor to slow up slowly to stop, can realize the smooth start-up of revolving stage and stop to modular quick detach structural design, the height-adjustable of roof adapts to uneven ground, dismantles convenient transportation convenience.

Description

Bearing type rotary table

Technical Field

The utility model belongs to the technical field of electromechanical device, in particular to bear formula revolving stage.

Background

The turret is a work table of the machine tool and can be rotated to any position and fixed in that position. Taking an automobile turntable as an example for explanation, the automobile turntable is divided into a bearing structure, a transmission power structure and a power output structure according to modules. The load bearing structure is mainly used for placing the whole turntable, which needs to bear the weight of the whole turntable and mechanical wear caused by rotation. The existing bearing structure is complex in installation structure, and when a certain structure is damaged, the bearing structure cannot be conveniently replaced, so that the service life of the bearing structure is shortened. A power transmission structure is a component or mechanism that transfers power from one part of a machine to another to move or operate the machine or machine component. When the automobile turntable needs power transmission, if the module matching between parts is too poor, the conditions of overlarge noise and poor transmission effect can be caused.

At present, the bearing structure mainly comprises a fixed structure and a movable structure, and the movable structure has the advantages of convenience and rapidness in disassembly and assembly and the like by the design of the whole scheme, and is widely accepted by the market. The transmission power structure mainly comprises a friction type structure and a pin tooth type structure, wherein the pin tooth type structure is widely applied by the advantages of high transmission precision, stable operation, no noise and the like.

But present revolving stage fluted disc and round pin cooperation are accurate inadequately, produce mechanical wear between the metal part easily at the rotation in-process of revolving stage to make whole transmission precision low, lead to the operation unstable and have the noise scheduling problem, this kind and bearing structure is complicated moreover, inconvenient installation, dismantlement and transportation.

Therefore, a load-bearing turntable is required to solve the above problems.

Disclosure of Invention

In order to solve the problems, the utility model provides a bearing type turntable, which comprises an outer frame, a driving device, a pin gear device, a structural frame and a supporting device;

the driving device, the pin tooth device, the structural frame and the supporting device are all arranged on the inner side of the outer frame;

the supporting device is placed at the bottom of the pin gear device, the structure frame is located at the top of the pin gear device, a fluted disc is arranged at the output end of the driving device, and the fluted disc is meshed with the pin gear device.

Preferably, the pin tooth device comprises a plurality of pin rods, a limiting ring and a cover plate;

the plurality of pin rods are uniformly arranged on the limiting ring;

the diameter of the outer ring of the limiting ring is the same as that of the cover plate, and the limiting ring is connected with the cover plate through the pin rod.

Preferably, the pin rod is of a cylindrical structure and is fixedly connected with the limiting ring.

Preferably, the supporting device comprises a central shaft, a plurality of first connecting rods and a plurality of quick release structures;

one end of each of the plurality of first connecting rods is connected with the central shaft.

Preferably, a second connecting rod is arranged between every two quick-release structures;

the cross sections of the first connecting rod and the second connecting rod are both of L-shaped structures.

Preferably, the quick release structure comprises a bottom plate, a top plate and a lifting rod for connecting the bottom plate and the top plate;

the bottom plate with roof parallel arrangement, the roof is provided with and is used for alternate the through hole of lifter.

Preferably, the quick release structure further comprises a fixing structure, and the fixing structure comprises a first nut and a second nut which can be sleeved on the lifting rod.

Preferably, the first nut and the second nut are sleeved on the lifting rod in a threaded manner;

the second nut is positioned below the first nut and used for supporting the top plate;

the first nut is positioned above the second nut and used for fixing the top plate.

Preferably, the top surface of the top plate is provided with two limiting plates, the two limiting plates are symmetrically arranged along the central line of the top plate, and the outer side surfaces of the limiting plates are provided with clamping blocks.

Preferably, a roller is arranged between the two limiting plates, and a rotating rod is arranged at the axis of the roller.

Preferably, a mounting hole is formed in the center of the fluted disc, the fluted disc is mounted on the output shaft of the driving device through the mounting hole, a plurality of teeth are arranged on the outer side of the circumference of the fluted disc, and the teeth are uniformly distributed on the outer side of the circumference of the fluted disc.

Preferably, each tooth can be inserted into a gap between two pins, each pin can move into a transitional concave curved space formed between two teeth, a space between each two pins corresponds to the tooth, and a space between each two pins corresponds to the position of the tooth.

Preferably, the driving device comprises a servo motor and a speed reducer, and the input end of the speed reducer is connected with the output end of the servo motor.

The utility model has the advantages that:

the revolving stage passes through the accurate modulus cooperation of pin pole and tooth, increases the whole transmission precision of revolving stage, operates steadily and noiselessness, and the pin tooth device can utilize servo motor to slow up slowly to stop, can realize the smooth start-up of revolving stage and stop to modular quick detach structural design, the height-adjustable of roof adapts to uneven ground, dismantles convenient transportation convenience.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 shows a schematic cross-sectional structure of a turntable according to an embodiment of the present invention;

fig. 2 shows a schematic top view of a turntable according to an embodiment of the present invention;

figure 3 shows a pin tooth arrangement according to an embodiment of the invention;

fig. 4 shows a schematic view of a drive arrangement according to an embodiment of the invention;

fig. 5 shows a schematic diagram of a fluted disc structure according to an embodiment of the present invention;

fig. 6 shows a schematic view of a support device according to an embodiment of the invention;

FIG. 7 is a schematic view of the quick release structure of the support device of FIG. 6;

fig. 8 shows a schematic diagram of an electrical power system according to an embodiment of the invention;

in the figure: 1-an outer frame, 2-a driving device, 21-a servo motor, 22-a speed reducer, 23-a fluted disc, 231-a mounting hole, 232-a tooth, 24-an electric cabinet, 25-an isolating switch, 26-a power plug, 27-a motor cable, 28-a motor encoder cable, 29-a zero position sensor cable, 3-a pin gear device, 31-a pin rod and 32-a limiting ring, 33-cover plate, 4-structure frame, 5-support device, 51-central shaft, 52-first connecting rod, 53-quick-release structure, 531-bottom plate, 532-top plate, 533-lifting rod, 534-first nut, 535-second nut, 536-limiting plate, 537-rotating rod, 538-roller and 54-second connecting rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The present invention is described by taking the car turntable as an example, and is not limited to the car turntable. Fig. 1 shows a schematic structural diagram of a section of a turntable according to an embodiment of the present invention, as shown in fig. 1, a bearing turntable according to an embodiment of the present invention mainly includes an outer frame 1, a driving device 2, a pin gear device 3, a structural frame 4, and a supporting device 5. The driving device 2, the pin gear device 3, the structural frame 4 and the supporting device 5 are all arranged on the inner side of the outer frame 1; the supporting device 5 is placed at the bottom of the pin tooth device 3, the structure frame 4 is positioned at the top of the pin tooth device 3, the structure frame 4 is attached to the pin tooth device 3, and the diameter of the structure frame 4 is larger than that of the pin tooth device 3, so that the top surface of the structure frame 4 is parallel to the top surface of the outer frame 1.

Fig. 2 shows a schematic top view of a turntable according to an embodiment of the present invention, and as shown in fig. 2, the fluted disc 23 is engaged with the pin gear device 3. Fig. 3 shows a pin gear device according to an embodiment of the present invention, and as shown in fig. 3, the pin gear device 3 includes a plurality of pins 31, a spacing ring 32, and a cover plate 33, wherein the pins 31 are uniformly arranged on the spacing ring 32. The outer ring diameter of the limiting ring 32 is the same as that of the cover plate 33, and the limiting ring 32 is connected with the cover plate 33 through the pin rod 31. The pin rod 31 is of a cylindrical structure, and the radian of the cylinder is the same as the transition radian between teeth of one fluted disc 23. The pin rod 31 can be fixedly connected with the limit ring 32 by welding one end face of the pin rod with the limit ring 32, and the pin rod 31 is uniformly welded on the limit ring 32.

Fig. 4 shows a schematic view of a drive arrangement according to an embodiment of the invention. As shown in fig. 4, the driving device 2 includes a servo motor 21 and a decelerator 22. The input end of the speed reducer 22 is connected with the output end of the servo motor 21, and the output end of the driving device 2 is provided with a fluted disc 23. Fig. 5 is a schematic structural diagram of a fluted disc according to an embodiment of the present invention, and as shown in fig. 5, a mounting hole 231 is centrally disposed on the fluted disc 23. The toothed plate 23 can be mounted to the output shaft of the speed reducer 22 through the mounting hole 231. Fluted disc 23 circumference outside is provided with tooth 232, tooth 232 quantity can be a plurality of, and a plurality of tooth 232 evenly arrange in fluted disc 23 circumference outside. Tooth 232 sets up to an organic whole structure with fluted disc 23, as shown in fig. 5, the embodiment of the utility model provides a with curved surface transitional coupling between tooth 232 and the tooth 232 to through the mode of arc transition from one tooth 232 to another tooth 232, the arc transition between per two teeth 232 is the same. The utility model discloses the mode of arc transition between this kind of tooth 232 has improved the module complex accuracy between fluted disc 23 and the round pin pole 31 effectively.

The embodiment of the utility model provides an in, can be through a fastener with this fluted disc 23 fixed mounting on reduction gear 22 output shaft. Illustratively, the toothed plate 23 is mounted to the output end of the speed reducer 22 through the mounting hole 231, and a corresponding fastener is provided corresponding to the output end of the speed reducer 22, and the fastener may be a fixed rod which is a part of the fixed toothed plate 23 to fix the toothed plate 23. It should be noted that the embodiment of the present invention is not limited to the fastening member of the fixing rod, and for example, a threaded sleeve, a bolt, etc. can also be used as the fixing device of the fixing disk 23.

The central line of the cover plate 33 and the central line of the limit ring 32 are located on the same vertical straight line and arranged in a vertical parallel mode, so that the cover plate 33 can be completely paved on the other end face of the pin rod 31, the teeth 232 of the driving device 2 through the fluted disc 23 are correspondingly matched with the pin rod 31 of the pin tooth device 3, namely, each tooth 232 can be inserted into a gap between the two pin rods 31, each pin rod 31 can be moved into a transitional concave curved surface space formed between the two teeth 232, so that the space between every two pin rods 31 corresponds to the teeth 232, and the space between every two pin rods 31 corresponds to the positions of the teeth 232. In the revolving stage working process, when fluted disc 23 and round pin pole 31 cooperate, mainly the waist of tooth 232 corresponds the matching with the transition concave curved surface space between two round pin poles 31 to guarantee accurate modulus cooperation between fluted disc 23 and the round pin pole 31, reach the purpose that reduces the collision wearing and tearing of tooth 232 and round pin pole 31, and then make tooth 232 and round pin pole 31 have good modulus and correspond the effect. The utility model discloses this kind of design of embodiment for when servo motor 21 passes through reduction gear 22 and drives fluted disc 23 and rotate, fluted disc 23 can stir the round pin pole 31 on the round pin tooth device 3 through tooth 232, and then the round pin tooth device 3 can keep the syntropy with fluted disc 23 and rotate.

The structure frame 4 is positioned on the cover plate 33, the structure frame 4 corresponds to the pin tooth device 3 through the cover plate 33, and the pin tooth device 3 is attached to the supporting device 5. Fig. 6 shows a schematic view of a support device according to an embodiment of the invention. As shown in fig. 6, the supporting device 5 of the bearing-type turntable of the embodiment of the present invention includes a central shaft 51, a plurality of first connecting rods 52 and a plurality of quick release structures 53. Wherein:

one end of each of the plurality of first connecting rods 52 is connected to the central shaft 51, so that the plurality of first connecting rods 51 and the central shaft 51 form a radial structure or an umbrella-shaped structure with the central shaft 51 as a center point. The first connecting rod 52 and the central shaft 51 can be connected by welding or the like. The other end of the first connecting rod 52 is connected with a quick release structure 53. The embodiment of the utility model provides an in, can realize connection between them through modes such as welding.

As shown in fig. 6, a second connecting rod 54 is disposed between each two quick release structures 53. The cross sectional shapes of the first connecting rod 52 and the second connecting rod 54 of the present invention are all set to be "L" shaped, i.e. the first connecting rod 52 and the second connecting rod 54 are a beam structure with a folded edge. The arrangement mode of the L-shaped structure can increase the bending resistance effect of the first connecting rod 52 and the second connecting rod 54, so that the first connecting rod 52 and the second connecting rod 54 are kept in a linear state, and the instability of the supporting device 5 caused by bending of the first connecting rod 52 and the second connecting rod 54 in the working process is avoided. Specifically, one end of each of the first connecting rods 52 is fixedly connected to the central shaft 51 by welding or the like with the central shaft 51 as an axis. All the first connecting rods 52 have the same length, so that all the quick release structures 53 are at the same distance from the central shaft 51. Each quick-release structure 53 is connected with the central shaft 51 through a first connecting rod 52, and then a plurality of quick-release structures 53 form a radial circular structure with the central shaft 51 as the center of a circle, and the distance between each quick-release structure 53 and another quick-release structure 53 is the same, and then a plurality of quick-release structures 53 and a plurality of second connecting rods 54 form a similar circular ring or a regular polygon.

Fig. 7 shows a schematic view of a quick release structure of the supporting device in fig. 6. As shown in fig. 7, the quick release structure 53 includes a bottom plate 531, a top plate 532, and a lifting rod 533 connecting the bottom plate 531 and the top plate 532. In the embodiment of the present invention, the bottom plate 531 and the top plate 532 may be square, circular or other plate-like shapes; the bottom plate 531 and the top plate 532 may be the same size or different sizes. The bottom plate 531 and the top plate 532 may be arranged in parallel up and down, and the top plate 532 is provided with a through hole for inserting the lifting rod 533. The lower end of the lifting rod 533 is fixedly connected to the bottom plate 531, and for example, the lower end of the lifting rod 533 is fixedly connected to the bottom plate 531 by welding.

One end of the lifting rod 533 is fixedly connected with the bottom plate 531, and the other end is provided with a fixing structure for fixing the top plate 532. The utility model discloses a fixed knot that fixed knot constructs can adopt two nuts constructs the design. As shown in fig. 7, a first nut 534 and a second nut 535 are screwed on the lifting rod 533, wherein the second nut 535 is located below the first nut 534 for supporting the top plate 532; the first nut 534 is located above the second nut 535 for securing the top plate 532. When the top plate 532 is mounted, the second nut 535 may be first sleeved on the lifting rod 533 from the upper end of the lifting rod 533, then the top plate 532 is inserted into the lifting rod 533 from the upper end of the lifting rod 533, finally the first nut 534 is sleeved on the lifting rod 533 from the upper end of the lifting rod 533, and the first nut 534 is tightened, so that the top plate 532 is fixed to the lifting rod 533.

As shown in fig. 7, in the embodiment of the present invention, four lifting rods 533 are shown to connect the bottom plate 531 and the top plate 532, and correspondingly, the top plate 532 has four through holes. However, it should be noted that the present invention is not limited to four lifting rods 533 and four through holes, and one lifting rod 533 or other lifting rods 533, and correspondingly one through hole or a plurality of through holes may be used, as long as the bottom plate 531 and the top plate 532 can be fixedly connected. The positions of the lifting rods 533 on the bottom plate 531 may be arranged according to actual engineering requirements, for example, the lifting rods may be uniformly distributed at corners of the bottom plate 531. The embodiment of the present invention utilizes four through holes to cooperate with four lifting rods 533 to effectively increase the stability of the top plate 532.

The lifting rod 533 may be a screw, and the screw is only for example, and is not limited to the screw, and other manners may be implemented, for example, a screw rod.

The embodiment of the utility model provides an in first nut 534 and second nut 535 medial surface can be provided with the internal thread, and then first nut 534 and second nut 535 all can with lifter 533 threaded connection to it is fixed with roof 532 through threaded connection's mode. In the design of the present invention, the height of the top plate 532 on the lifting rod 533 is adjusted by rotating the first nut 534 and the second nut 535 on the lifting rod 533; the top plate 532 is disassembled, installed and secured by removing, installing and tightening the first nut 534 on the lifting rod 533.

As shown in fig. 7, a limiting plate 536 for limiting a roller 538 (or called as a roller) is disposed on the top surface of the top plate 532, and a rotating rod 537 is disposed at the axis of the roller 538. The embodiment of the utility model provides a limiting plate 536 quantity sets up to two, and two limiting plates 536 can set up with roof 532 central line symmetry. In order to limit the position of the roller 538, a groove for placing a rotating rod 537 (also called a rotating shaft) of the roller 538 is cut in the limit plate 536. The embodiment of the present invention is not limited to the groove and the round hole which are cut out and used for placing the structure of the shaft center rotating rod 537 of the roller 538.

In order to realize the fixed installation of the limit plate 536 on the top plate 532, a fixture block is arranged on the outer side surface of the limit plate 536, and the fixture block may be a right triangle. Two adjacent edges of the fixture block are respectively fixedly connected with the top plate 532 and the limiting plate 536, so that the fixing of the limiting plate 536 can be realized in a reinforced manner.

A rotating rod 537 is mounted in the recess to effect the retention of the roller 538 between the two retainer plates 536. The utility model discloses a this kind of design can make cylinder 538 rotate at the recess inboard through bull stick 537.

As shown in fig. 2, the fluted disc 23 is located inside the pin rods 31, the waist of the teeth 232 is correspondingly matched with the transitional concave curved surface space between the two pin rods 31, the driving device 2 operates to drive the fluted disc 23 to rotate, the fluted disc 23 drives the pin rods 31 through the teeth 232, and at this time, the pin rods 31 drive the limiting rings 32 to slide outside the circumference of the roller 538. The pin gear 3 rotates when the roller 538 rotates, and the pin gear 3 rotates the structure frame 4 through the cover plate 33.

The top surface of the cover plate 33 is provided with a structural frame 4, the cross section of the structural frame 4 is set to be circular, the diameter of the structural frame 4 is larger than that of the pin gear device 3, the structural frame 4 and the pin gear device 3 are positioned on the same rotation central line, the pin gear device 3 is arranged on the top surface of the roller 538 through the limiting ring 32, the structural frame 4 is arranged on the top surface of the cover plate 33, and when the limiting ring 32 is arranged on the top of the roller 538, the pin gear device 3 can correspond to the central shaft 51 for the cover plate 33.

The utility model discloses can provide electric power through an electrical system and realize the control to above-mentioned drive arrangement 2. Fig. 8 shows a schematic diagram of an electrical power system according to an embodiment of the present invention. As shown in fig. 8, the power system includes an electric cabinet 24, a disconnecting switch 25 is disposed on one side of the electric cabinet 24, the electric cabinet 24 is externally connected with a power plug 26, and the electric cabinet 24 is externally connected with a motor cable 27, a motor encoder cable 28 and a zero sensor cable 29. The motor encoder cable 28 is connected with a main control board inside the electric cabinet 24 and a motor encoder in the servo motor 21, and feeds back the current speed of the servo motor 21 through the motor encoder and the main control board; the zero sensor cable 29 connects the zero sensor and the main control board inside the electric cabinet 24, the zero sensor is located at the bottom of the quick-release structure 53, when the quick-release structure 53 passes through the zero sensor, the zero sensor feeds back a signal to the main control board, and the main control board plans the initial and final reference signals of rotation. The motor cable 27, the motor encoder cable 28 and the zero position sensor cable 29 are sequentially connected to the bottom of the electric cabinet 24 from left to right, and the motor cable 27 is connected with the servo motor 21 of the driving device 2 to realize power supply to the servo motor 21. The electric cabinet 24 can be fixedly mounted on a wall, and the driving device 2 is controlled by the following control modes:

1. step-by-step operation: the rotary table operates by one step at a stepping angle which can be selected from (10 degrees, 20 degrees, 30 degrees, 45 degrees, 180 degrees and 360 degrees), operates by the stepping angle again after stopping a period of time (which can be set), and repeats the working cycle until the rotary table operates for a circle and finishes the operation, namely, the servo motor 21 operates in a stepping operation mode, and a signal of the stepping operation is sent to the servo motor 21 through a motor cable 27;

2. manual operation: the user manually controls the turntable to rotate clockwise, rotate anticlockwise and stop, namely, the user controls the servo motor 21 to switch and operate, and a signal of manual operation is sent to the servo motor 21 through the motor cable 27;

3. physical zero position: the turntable has a physical zero position, and a user can use a zeroing function to perform zeroing adjustment on the turntable, namely, the turntable returns to zero when rotating to one quick-release structure 53 through a zero position sensor corresponding to a zero position point of one quick-release structure 53;

4. variable frequency speed regulation and emergency stop, namely, an electric control box 24 is controlled and protected through an isolating switch 25;

5. 1 path of relay output: the electric control box 24 has 1-way relay output contact, and a user can set the function of the electric control box by himself or herself, and can set the working function of the electric control box 24 through a motor encoder.

The revolving stage passes through the accurate modulus cooperation of pin pole 31 and tooth 232, increases the whole transmission precision of revolving stage, operates steadily and noiselessness, and pin tooth device 3 can utilize servo motor 21 to slowly start slowly to stop, can realize revolving stage smooth start and stop to modular rapid disassembly structure 53 designs, and the height-adjustable of roof 532 adapts to uneven ground, dismantles convenient transportation convenience.

Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (13)

1. A bearing type rotary table is characterized by comprising an outer frame (1), a driving device (2), a pin tooth device (3), a structural frame (4) and a supporting device (5);

the driving device (2), the pin gear device (3), the structural frame (4) and the supporting device (5) are all arranged on the inner side of the outer frame (1);

the supporting device (5) is placed at the bottom of the pin gear device (3), the structure frame (4) is located at the top of the pin gear device (3), a fluted disc (23) is arranged at the output end of the driving device (2), and the fluted disc (23) is meshed with the pin gear device (3).

2. Carrying turntable according to claim 1, characterized in that the pin tooth means (3) comprise a plurality of pins (31), a stop ring (32) and a cover plate (33);

the plurality of pin rods (31) are uniformly arranged on the limiting ring (32);

the diameter of the outer ring of the limiting ring (32) is the same as that of the cover plate (33), and the limiting ring (32) is connected with the cover plate (33) through the pin rod (31).

3. Carrying turntable according to claim 2, characterized in that the pin (31) is of cylindrical construction, the pin (31) being fixedly connected to a stop ring (32).

4. Carrying turntable according to claim 1, characterized in that the supporting means (5) comprise one central shaft (51), a number of first connecting rods (52) and a number of quick release structures (53);

one end of each of the plurality of first connecting rods (52) is connected to the central shaft (51).

5. Carrying turntable according to claim 4, characterized in that a second connecting rod (54) is arranged between each two quick release structures (53);

the cross section shapes of the first connecting rod (52) and the second connecting rod (54) are both set to be L-shaped structures.

6. Carrying turntable according to claim 4 or 5, characterized in that the quick release construction (53) comprises a bottom plate (531), a top plate (532), a lifting rod (533) connecting the bottom plate (531) and the top plate (532);

the bottom plate (531) and the top plate (532) are arranged in parallel, and the top plate (532) is provided with a through hole for inserting the lifting rod (533).

7. The load-bearing turntable of claim 6, wherein the quick release structure (53) further comprises a securing structure comprising a first nut (534) and a second nut (535) that can be sleeved on the lifting rod (533).

8. The load bearing turntable of claim 7, wherein said first nut (534) and second nut (535) are threadably received on said lift rod (533);

the second nut (535) is located below the first nut (534) for supporting the top plate (532);

the first nut (534) is positioned above the second nut (535) for fixing the top plate (532).

9. The bearing type turntable as claimed in claim 8, wherein the top surface of the top plate (532) is provided with two limiting plates (536), the two limiting plates (536) are symmetrically arranged on the center line of the top plate (532), and the outer side surface of each limiting plate (536) is provided with a fixture block.

10. Carrying turntable according to claim 9, characterized in that a roller (538) is arranged between two stop plates (536), and a rotating rod (537) is arranged at the axle centre of the roller (538).

11. The load-bearing turntable according to claim 1 or 2, wherein the toothed disc (23) is centrally provided with a mounting hole (231), the toothed disc (23) is mounted on the output shaft of the driving device (2) through the mounting hole (231), a plurality of teeth (232) are provided on the outer circumferential side of the toothed disc (23), and the teeth (232) are uniformly arranged on the outer circumferential side of the toothed disc (23).

12. Carrying turntable according to claim 11, characterized in that each tooth (232) is insertable into a gap between two pin bars (31), each pin bar (31) being movable into a transitional concavely curved space formed between two teeth (232), the space between each two pin bars (31) corresponding to a tooth (232), the space between each two pin bars (31) corresponding to the position of a tooth (232).

13. Carrying turntable according to claim 1, characterized in that the drive means (2) comprise a servo motor (21) and a retarder (22), the input of the retarder (22) being connected to the output of the servo motor (21).

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