Barycenter self-adapting adjustment device

Abstract

The application discloses a gravity center self-adaptive adjusting device, which comprises a pair of support plates, a rotating device mounting plate is fixed between the support plates, the rotating device mounting plate is fixed on the support plates through screws at both ends, a driving synchronous pulley is arranged in the middle of the rotating device mounting plate, the driving synchronous pulley is connected with a rotating device, and a tension pulley is arranged on the periphery of the driving synchronous pulley; driving synchronous pulleys are symmetrically arranged on the two side support plates, the driving synchronous pulleys are connected with the driving synchronous pulley through synchronous belts, the driving synchronous pulleys are connected with gravity center adjusting screws, thrust nuts are arranged on the gravity center adjusting screws, screw bearing seats are arranged on the gravity center adjusting screws, the screw bearing seats are fixed on the support plates through screw bearing seat mounting seats, the thrust nuts are connected with counterweight side plates arranged on the inner sides of the support plates, counterweight mounting plates are connected between the two side counterweight side plates, and the counterweight mounting plates are connected with a plurality of counterweight blocks.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of gravity center adjustment device, in particular to a gravity center self-adaptive adjustment device applied to a turntable with different weight counterweights. BACKGROUND

[0002] In some optical device detection, in order to obtain a complete field of view, the load (optical device) needs to be placed on the top of the turntable, but this will offset the load gravity center relative to the rotation center of the pitch axis, increase the moment of inertia, and greatly increase the required torque. At this time, in order to reduce the burden of the pitch axis power mechanism, a counterweight is generally selected at the symmetric position to balance the eccentric moment caused by the load offset. However, during the detection process, different specifications of optical devices need to be replaced at any time, and the size and weight of different specifications of optical devices are different, and the specifications of optical devices are various and the weight span is large, so that the position of the load gravity center relative to the rotation center of the pitch axis is different. At this time, different weight counterweights are needed. In this case, if the traditional manual increase and decrease of the counterweight block is used, it is difficult to accurately balance the eccentric moment, and it is time-consuming and laborious. SUMMARY

[0003] The purpose of the present application is to provide a gravity center self-adaptive adjustment device to quickly meet the demand of the turntable for gravity center adjustment.

[0004] To solve the above technical problems, the present application provides a technical scheme: a gravity center self-adaptive adjustment device, comprising a pair of support plates, a rotating device mounting plate is fixed between the support plates, the rotating device mounting plate is fixed at both ends by screws and the support plates, a driving synchronous pulley is arranged in the middle of the rotating device mounting plate, the driving synchronous pulley is connected with a rotating device, and a tension pulley is arranged on the side of the driving synchronous pulley; a driven synchronous pulley is symmetrically arranged on the two side support plates, the driven synchronous pulley and the driving synchronous pulley are connected by a synchronous belt, the driven synchronous pulley is connected with a gravity center adjusting screw, a thrust nut is arranged on the gravity center adjusting screw, a screw bearing seat is arranged on the gravity center adjusting screw, the screw bearing seat is fixed on the support plate through a screw bearing seat mounting seat, the thrust nut is connected with a counterweight side plate arranged on the inner side of the support plate, a counterweight mounting plate is connected between the two counterweight side plates, and the counterweight mounting plate is connected with a plurality of counterweight blocks.

[0005] According to the above scheme, the rotating device is a hand wheel.

[0006] According to the above scheme, a linear guide rail is arranged on the guide rail mounting plate, at least two sliding blocks are arranged on the linear guide rail, a sliding block mounting plate is fixed on the sliding block, and the sliding block mounting plate is connected with the end of the counterweight side plate.

[0007] According to the above scheme, a connecting plate is arranged between the guide rail mounting plates arranged at both ends of the same side support plate.

[0008] According to the above scheme, the support plate is provided with a gap for placing the guide rail mounting plate at both ends.

[0009] According to the above scheme, the guide rail mounting plate is provided with a limiting block on both sides of the linear guide rail.

[0010] According to the above scheme, the screw hole for fixing the rotating device mounting plate on the support plate is a countersunk hole, and the shape of the countersunk groove of the countersunk hole is a transverse waist groove.

[0011] According to the above scheme, the upper and lower sides of the end of the rotating device mounting plate are provided with a pressing block fixed to the support plate.

[0012] According to the above scheme, the horizontal side of the rotating device mounting plate close to the synchronous belt is provided with a tension nut fixed to the support plate.

[0013] The beneficial effects of the present application are: the device is installed on the rotating table, when the device needs to adjust the center of gravity, the driving synchronous pulley is driven by the rotating device, the driven synchronous pulley is driven by the synchronous belt, the driven synchronous pulley drives the center of gravity adjusting screw rod to rotate, and the thrust nut on the center of gravity adjusting screw rod moves, and the counterweight mounting plate and the counterweight block move longitudinally, thereby adjusting the center of gravity.

[0014] Further, by setting guide rails on the counterweight side plate and the support plate bracket, the counterweight block moves more smoothly during reciprocating motion.

[0015] Further, the waist-shaped countersunk hole provided on the support plate allows the rotating device mounting plate to move within a certain horizontal range for tensioning the synchronous belt.

[0016] Further, the upper and lower directions of the rotating device mounting plate are fixed and limited by the pressing block.

[0017] Further, by adjusting the tension nut, the tension nut is pressed against the rotating device mounting plate to adjust the horizontal position of the rotating device mounting plate, thereby more conveniently tensioning the synchronous belt. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of the center of gravity self-adaptive adjustment device according to an embodiment of the present application;

[0019] Figure 2 is a schematic view of the synchronous belt transmission part structure of the center of gravity self-adaptive adjustment device according to an embodiment of the present application;

[0020] Figure 3 is a side view of the center of gravity self-adaptive adjustment device according to an embodiment of the present application;

[0021] Figure 4 is Figure 3 A-A sectional view of the application;

[0022] Figure 5 is the schematic diagram of the gravity center self-adaptive adjustment device and the rotary table of an embodiment of the application

[0023] Figure 6 is the working principle diagram of the gravity center self-adaptive adjustment device of an embodiment of the application

[0024] Figure 7 is the working flow chart of the gravity center self-adaptive adjustment device of an embodiment of the application

[0025] In the figure: 1-hand wheel, 2-pressing block, 3-tensioning wheel, 4-tensioning nut, 5-rotating device mounting plate, 6-synchronous belt, 7-screw bearing seat, 8-counterweight side plate, 9-screw bearing seat mounting seat, 10-counterweight mounting plate, 11-thrust nut, 12-gravity adjusting screw, 13-sliding block mounting plate, 14-linear guide rail, 15-counterweight block, 16-limit block, 17-driving synchronous pulley, 18-following synchronous pulley, 19-guide rail mounting plate, 20-connection plate, 21-supporting plate, 22-base, 23-rotary shaft assembly, 24-pitching shaft assembly, 25-load. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the protection scope of the present disclosure.

[0027] Referring to Figures 1-4, the gravity center self-adaptive adjusting device comprises a pair of support plates 21, a rotating device mounting plate 5 is fixed between the support plates 21, both ends of the rotating device mounting plate 5 are fixed with the support plates 21 through screws, a driving synchronous pulley 17 is arranged in the middle of the rotating device mounting plate 5, the driving synchronous pulley 17 is connected with a rotating device, and a tension pulley 3 is arranged on the side of the driving synchronous pulley 17; a driven synchronous pulley 18 is symmetrically arranged on the two side support plates 21, the driven synchronous pulley 18 is in transmission connection with the driving synchronous pulley 17 through a synchronous belt 6, the driven synchronous pulley 18 is connected with a gravity center adjusting screw rod 12, a thrust nut 11 is arranged on the gravity center adjusting screw rod 12, a screw rod bearing seat 7 is arranged on the gravity center adjusting screw rod 12, the screw rod bearing seat 7 is fixed on the support plate 21 through a screw rod bearing seat mounting seat 9, the thrust nut 11 is connected with a counterweight side plate 8 arranged on the inner side of the support plate 21, the two side counterweight side plates 8 are connected with a counterweight mounting plate 10 in the middle, the counterweight mounting plate 10 is connected with a plurality of counterweight blocks 15 (the plurality of counterweight blocks 15 are fixed on the counterweight mounting plate 10 through long screws); in other embodiments, the synchronous belt transmission described above is replaced by chain transmission.

[0028] Further, the rotating device is a hand wheel 1; in other embodiments, the rotating device is a motor plus a speed reducer.

[0029] Further, the front and rear ends of each side support plate 21 are provided with guide rail mounting plates 19, the guide rail mounting plates 19 are provided with linear guide rails 14, at least two sliding blocks are arranged on the linear guide rails 14, sliding block mounting plates 13 are fixed on the sliding blocks, and the sliding block mounting plates 13 are connected with the end portions of the counterweight side plates 8; in other embodiments, guide grooves, guide wheels or other forms of guide positioning devices are arranged between the support plates and the counterweight side plates; in other embodiments, the linear guide rails 14 can be arranged only at any one end of each side support plate 21, and only one sliding block can be arranged on the linear guide rail 14

[0030] Further, a connecting plate 20 is arranged between the guide rail mounting plates 19 arranged at the two ends of the same side support plate 21, so as to enhance the stability of the device.

[0031] Further, the front and rear ends of the support plate 21 are provided with clearance notches for placing the guide rail mounting plates 19.

[0032] Further, the guide rail mounting plates 19 are provided with limiting blocks 16 located on the two sides of the linear guide rails 14, so as to prevent the sliding blocks from moving out of limit and damaging the device.

[0033] Further, the screw hole for fixing the rotating device mounting plate 5 on the support plate 21 is a countersunk hole, the countersunk groove of the countersunk hole is in the shape of a transverse waist groove, so that the rotating device mounting plate 5 can be adjusted and moved in a certain range of horizontal direction.

[0034] Further, the upper and lower sides of the end of the rotating device mounting plate 5 are provided with pressing blocks 2 fixed to the support plate 21 to limit the vertical direction of the rotating device mounting plate 5.

[0035] Further, the horizontal side of the rotating device mounting plate 5 close to the synchronous belt 6 is provided with a tensioning nut 4 fixed to the support plate 21, so that the operator can adjust the tensioning nut 4 to tension the synchronous belt 6.

[0036] Referring to Figure 5 , the support plate 21 of the gravity center self-adaptive adjusting device is rotationally connected to the base 22 of the rotating table through the pitch shaft assembly 24 of the rotating table, and one end of the support plate 21 of the gravity center self-adaptive adjusting device is connected to the load end of the rotating table through the slewing shaft assembly 23, and the load 25 on the load end is three parallel optical devices and their mounting support frames; wherein the slewing shaft assembly 23 and the pitch shaft assembly 24 each include a motor, a bearing and a circular grating.

[0037] Referring to Figure 6 , Figure 7 By the above, the gravity center automatic adjusting principle of the gravity center self-adaptive adjusting device is as follows:

[0038] When the pitch shaft of the rotating table is rotated to an angle of inclination a and positioned at the angle, the pitch motor output is kept; at this time, the eccentric radius of the gravity center G is r, and under the action of gravity, a gravity torque T is generated.

[0039] T G = G*r*sin a

[0040] This T G is offset by the same size torque output by the pitch shaft motor; at this time, the driving current I output to the pitch shaft by the software system can be read.

[0041] Suppose that when the direction of I is positive, the pitch shaft motor exerts force in the counterclockwise direction, and when I is in the opposite direction, the pitch shaft motor exerts force in the clockwise direction.

[0042] If the gravity center is located obliquely below the pitch shaft center, at this time the control system judges that the current I output by the pitch shaft driver should be positive, and then sends an actuating instruction to drive the adjusting screw of the gravity center lifting motor, so that the counterweight runs upward, and the pitch gravity center G approaches the rotation center of the pitch shaft upward, until the current output by the pitch shaft driver approaches 0; on the contrary, if G is located obliquely above the pitch shaft center, then the current output by the pitch shaft driver should be negative, and then an instruction is sent to make the counterweight run downward, so that the pitch gravity center approaches the rotation center downward, until the current output by the pitch shaft driver approaches 0 (the eccentric torque approaches 0).

[0043] The above merely illustrates the embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, which is made according to the content of the present application, shall be included in the patent protection scope of the present application.

Claims

1. A center of gravity self-adapting adjustment device, characterized in that: The rotating device installation plate is fixed between a pair of support plates, and both ends of the rotating device installation plate are fixed to the support plates by screws. The support plate is rotationally connected to the base of the rotary table through a pitch shaft assembly of the rotary table, and one end of the support plate is connected to the load end of the rotary table through a rotary shaft assembly.

2. The center of gravity self-adapting adjustment device according to claim 1, characterized in that: The rotating device is a hand wheel.

3. The center of gravity self-adapting adjustment device according to claim 1, characterized in that: The front and rear ends of each support plate are provided with guide rail installation plates, the guide rail installation plates are provided with linear guides, the linear guides are provided with at least two sliding blocks, the sliding blocks are fixed with sliding block installation plates, and the sliding block installation plates are connected to the ends of the counterweight side plates.

4. The center of gravity self-adapting adjustment device according to claim 3, characterized in that: The connecting plates are arranged between the guide rail installation plates arranged at the two ends of the same side support plate.

5. The center of gravity self-adapting adjustment device according to claim 3, characterized in that: The support plate is provided with a gap for placing the guide rail installation plate at the front and rear ends.

6. The center of gravity self-adapting adjustment device according to claim 3, characterized in that: The guide rail installation plate is provided with limiting blocks on both sides of the linear guide.

7. The center of gravity self-adapting device according to claim 1, characterized in that: The screw hole for fixing the rotating device installation plate on the support plate is a countersunk hole, and the countersunk groove of the countersunk hole is a transverse waist groove.

8. The center of gravity self-adapting adjustment device according to claim 7, characterized in that: The upper and lower sides of the end of the rotating device installation plate are provided with pressing blocks fixed to the support plate.

9. The center of gravity self-adapting adjustment device according to claim 8, characterized in that: The horizontal side of the rotating device installation plate close to the synchronous belt is provided with a tension nut fixed to the support plate.

Images