Waterproof sealing device for shaft system part of rotary table

Abstract

The utility model discloses a rotary table shafting part waterproof sealing device which is used for sealing a shafting part of a rotary table, the rotary table comprises an H-shaped support, the upper half portion of the H-shaped support is a first U-shaped frame, the lower half portion of the H-shaped support is a second U-shaped frame, and the rotary table further comprises a bearing cabin arranged in the first U-shaped frame. Pitch shaft systems connected with the first U-shaped frame are arranged on the two sides of the bearing cabin respectively, an azimuth shaft system is arranged on the second U-shaped frame, and the rotary table shaft system waterproof sealing device comprises first waterproof sealing assemblies arranged in the pitch shaft systems respectively and a second waterproof sealing assembly arranged in the azimuth shaft system. According to the waterproof sealing device for the rotary table shafting part, the problem that in the prior art, sealing is conducted only through a labyrinth structure, and the good sealing effect cannot be achieved is solved, and the problems that in the prior art, due to the fact that sealing is conducted through an oil seal, the requirement for shafting machining precision is high, shafting friction resistance is increased, and the sealing effect is poor are solved. And the requirement on the output torque of the motor is increased.

Description

Technical Field

[0001] The utility model belongs to the field of turntable sealing, and in particular relates to a waterproof sealing device for a turntable shaft system. Background Art

[0002] Turntables are widely used because they can easily adjust the angle. The turntable realizes the rotation of the shaft structure through the cooperation of bearings and motors. When the equipment is used in an outdoor environment, it will inevitably be affected by rain, sand and dust. The choice of sealing method at the shaft has a great impact on the service life of the equipment. Poor product sealing will cause water to enter the product and burn the motor, so there is a great safety hazard.

[0003] The existing patent CN214888868U is a waterproof and sealed labyrinth structure. The labyrinth sealing structure can achieve a certain sealing effect. However, when the equipment is used in a scene with heavy and urgent rainfall, a large amount of water will flow into the labyrinth in a short time. At this time, the water cannot be removed in time, which will cause water accumulation in the labyrinth, and finally overflow the labyrinth into the equipment, affecting the use of the equipment; the existing patent CN205404791U is a waterproof radar rotating table, which uses oil seals for sealing. Although it can achieve a good sealing effect, it can not only prevent the entry of water droplets, but also has a certain blocking effect on water vapor. However, the selection of oil seals places higher requirements on the machining accuracy of the shaft system, and will increase the friction resistance of the shaft system, and increase the requirements for the output torque of the motor. Utility Model Content

[0004] The utility model aims to solve the problems raised in the background technology and proposes a waterproof sealing device for the shaft system of a turntable.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a waterproof sealing device for a shaft system of a turntable, comprising a device for sealing a shaft system of a turntable, wherein the turntable comprises an H-shaped bracket, wherein the upper half of the H-shaped bracket is a first U-shaped bracket, and the lower half of the H-shaped bracket is a second U-shaped bracket. The turntable further comprises a bearing cabin arranged in the first U-shaped bracket, wherein both sides of the bearing cabin are respectively provided with a pitch shaft system connected to the first U-shaped bracket, and an azimuth shaft system is arranged on the second U-shaped bracket. The waterproof sealing device for the shaft system of the turntable comprises a first waterproof sealing component respectively arranged in each pitch shaft system, and a second waterproof sealing component arranged in the azimuth shaft system, wherein:

[0007] Each of the pitch shaft systems comprises a first outer shaft sleeve and a first inner shaft connected by a first bearing, wherein the first outer shaft sleeve is connected to a first U-shaped frame, and the first inner shaft is connected to the bearing cabin;

[0008] Each of the first waterproof sealing components comprises a first annular groove formed on the first outer sleeve, holes are formed on both sides of the first U-shaped frame, each of the first outer sleeve is located in the corresponding hole, the first groove and the hole form a water guide groove, a first gap is formed between the bearing cabin and the first U-shaped frame, and the first gap is connected to the water guide groove;

[0009] The azimuth shaft system comprises a middle cylinder, and a second outer shaft sleeve and a second inner shaft located inside the middle cylinder and connected via a second bearing, wherein the second outer shaft sleeve is connected to a second U-shaped frame, and the second inner shaft is connected to the middle cylinder;

[0010] The second waterproof sealing component includes a circular waterproof platform arranged on the outer side wall of the second U-shaped frame and an annular second waterproof wall arranged on the top of the middle tube. A first annular waterproof wall is installed at the bottom of the waterproof platform, and the first waterproof wall is located on the outside of the second waterproof wall. The top of the middle tube is also provided with an annular partition located on the inner side of the second waterproof wall. The waterproof platform, the second waterproof wall, the top of the middle tube and the partition constitute a water storage tank, and at least one opening is opened on the second waterproof wall.

[0011] Preferably, a first sealing ring is provided between the first outer shaft sleeve and the first U-shaped frame, and a second sealing ring is provided between the first inner shaft and the bearing compartment.

[0012] Preferably, each of the first waterproof sealing components also includes at least two annular first protrusions arranged on the first outer sleeve and with the first inner shaft as the central axis, each of the first protrusions is located between the first groove and the carrying cabin, and the side wall of the carrying cabin is provided with an annular second groove corresponding to each first protrusion, each first protrusion and the second groove constitute a first maze structure, and the first maze structure is connected to the water guide groove.

[0013] Preferably, each of the first waterproof sealing assemblies further includes a first annular sealing member abutting between the first outer sleeve and the first inner shaft, and the first sealing member is located on the inner side of each first protrusion.

[0014] Preferably, an incision in the shape of a figure eight is provided on the inner wall of the hole groove on one side close to the load-bearing compartment.

[0015] Preferably, the second waterproof sealing assembly also includes at least two annular second protrusions arranged at the bottom of the waterproof platform, and the top of the middle tube is also provided with a third protrusion corresponding to the second protrusion. The second protrusions and the third protrusions are staggered and form a second maze structure with the partition, and the second maze structure is connected to the water tank.

[0016] Preferably, the second waterproof sealing assembly further comprises a second sealing member in an annular shape abutting between the second outer sleeve and the second inner shaft.

[0017] Preferably, a third sealing ring is provided between the second outer sleeve and the second U-shaped frame, and a fourth sealing ring is provided between the second inner shaft and the middle cylinder.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The waterproof sealing device for the shaft system of the turntable is provided with a water guide groove in the pitch shaft system, so that the water flow has a good buffering and diversion effect in the water guide groove when flowing through the pitch shaft system, thereby achieving the waterproof sealing effect of the pitch shaft system. At the same time, the waterproof sealing effect of the pitch shaft system is further improved by the first labyrinth structure and the first sealing member.

[0020] 2. The waterproof sealing device of the shaft system of the turntable is provided with the first waterproof wall and the second waterproof wall in the azimuth shaft system, so that most of the water flow is blocked when flowing through the azimuth shaft system, and a good buffer is formed for the water flow through the water storage tank. As the inflow of water increases, the water flows out from the opening in the water storage tank to the outside, achieving the waterproof sealing effect of the azimuth shaft system. At the same time, the second labyrinth and the second seal are provided to further improve the waterproof sealing effect of the azimuth shaft system.

[0021] 3. The waterproof sealing device for the turntable shaft system solves the problem in the prior art that sealing only through a maze structure cannot achieve a good sealing effect, and solves the problem in the prior art that sealing through an oil seal leads to higher requirements on the shaft system processing accuracy, increased friction resistance of the shaft system, and increased requirements on the output torque of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the waterproof sealing device for the shaft system of the turntable of the utility model;

[0023] Figure 2 It is the enlarged view A in the utility model;

[0024] Figure 3 It is the enlarged view B in the utility model;

[0025] Figure 4 It is a schematic diagram of the flow direction of water in the enlarged view A of the present utility model;

[0026] Figure 5 This is a schematic diagram of the flow direction of water in the enlarged view B of the present invention.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. H-shaped bracket; 11. first U-shaped bracket; 12. second U-shaped bracket; 2. load-bearing cabin; 3. pitch axis system; 31. first bearing; 32. first outer sleeve; 33. first inner axis; 4. azimuth axis system; 41. middle cylinder; 42. second bearing; 43. second outer sleeve; 44. second inner axis; 5. first waterproof sealing assembly; 51. first groove; 52. hole groove; 53. water guide groove; 54. first protrusion; 55. second groove; 56. first sealing member; 6. second waterproof sealing assembly; 61. waterproof platform; 62. second waterproof wall; 63. first waterproof wall; 64. water storage tank; 65. opening; 66. second protrusion; 67. third protrusion; 68. second sealing member; 69. partition; 7. first sealing ring; 8. second sealing ring; 9. third sealing ring; 10. fourth sealing ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be an intermediate component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0030] like Figure 1-5 As shown, a waterproof sealing device for a shaft system of a turntable is used to seal the shaft system of the turntable. The turntable includes an H-shaped bracket 1, the upper half of the H-shaped bracket 1 is a first U-shaped bracket 11, and the lower half of the H-shaped bracket 1 is a second U-shaped bracket 12. The turntable also includes a load-bearing cabin 2 arranged in the first U-shaped bracket 11, and pitch shaft systems 3 connected to the first U-shaped bracket 11 are respectively arranged on both sides of the load-bearing cabin 2. An azimuth shaft system 4 is arranged on the second U-shaped bracket 12. The waterproof sealing device for the shaft system of the turntable includes a first waterproof sealing component 5 respectively arranged in each pitch shaft system 3, and a second waterproof sealing component 6 arranged in the azimuth shaft system 4, wherein:

[0031] Each pitch axis system 3 includes a first outer sleeve 32 and a first inner shaft 33 connected by a first bearing 31, the first outer sleeve 32 is connected to the first U-shaped frame 11, and the first inner shaft 33 is connected to the load-bearing cabin 2;

[0032] Each first waterproof sealing assembly 5 includes a first annular groove 51 formed on the first outer sleeve 32, and holes 52 are formed on both sides of the first U-shaped frame 11. Each first outer sleeve 32 is located in the corresponding hole 52. The first groove 51 and the hole 52 form a water guide groove 53. A first gap is formed between the load compartment 2 and the first U-shaped frame 11, and the first gap is connected to the water guide groove 53.

[0033] The azimuth shaft system 4 includes a middle cylinder 41, and a second outer shaft sleeve 43 and a second inner shaft 44 located inside the middle cylinder 41 and connected through a second bearing 42, the second outer shaft sleeve 43 is connected to the second U-shaped frame 12, and the second inner shaft 44 is connected to the middle cylinder 41;

[0034] The second waterproof sealing component 6 includes a circular waterproof platform 61 arranged on the outer wall of the second U-shaped frame 12 and an annular second waterproof wall 62 arranged on the top of the middle tube 41. An annular first waterproof wall 63 is installed at the bottom of the waterproof platform 61, and the first waterproof wall 63 is located on the outside of the second waterproof wall 62. The top of the middle tube 41 is also provided with an annular partition 69 located on the inner side of the second waterproof wall 62. The waterproof platform 61, the second waterproof wall 62, the top of the middle tube 41 and the partition 69 constitute a water storage tank 64, and at least one opening 65 is opened on the second waterproof wall 62.

[0035] It should be noted that Figure 1 For example, the first U-shaped frame 11 is located above the second U-shaped frame 12, and the two are integrally formed, and protective covers are fixedly connected to both sides of the first U-shaped frame 11, the load-bearing cabin 2 is located in the first U-shaped frame 11, and its left and right sides are respectively connected to the inner sides of the first U-shaped frame 11 through the pitch bearing 3, and the azimuth axis system 4 is located below the first U-shaped frame 11; the outer ring of the first bearing 31 is fixedly connected to the first outer shaft sleeve 32, the inner ring of the first bearing 31 is fixedly connected to the first inner shaft 33, and the first outer shaft sleeve 32 is fixedly connected to the first U-shaped frame 11, and the first inner shaft 33 is fixedly connected to the load-bearing cabin 2, and the first inner shaft 33 is rotated to drive the load-bearing cabin 2 to perform pitch rotation adjustment, and the load-bearing cabin 2 and the first outer shaft sleeve 32 rotate relative to each other;

[0036] The first groove 51 is located on the outer side wall of the first outer sleeve 32, and the first groove 51 takes the first inner shaft 33 as the central axis. Figure 2a shown; when the turntable is used in rainy weather, water flows from the first gap in the upper part of the pitch axis system 3 into the water guide groove 53 from top to bottom, and then flows along the annular water guide groove 53, falls into the first gap in the lower part of the pitch axis system 3, and then flows out of the turntable, thereby achieving a good buffering and diversion of the external water flow in the water guide groove 53 when flowing through the pitch axis system 3, and has a good diversion effect when facing a large and rapid external water flow, thereby achieving a waterproof and sealing effect of the pitch axis system 3; the depth of the water guide groove 53 along the up and down direction is L2, and the width along the left and right direction is L3, and the larger the values ​​of L2 and L3, the better the diversion effect and the better the sealing effect.

[0037] The inner ring of the second bearing 42 is fixedly connected to the second inner shaft 44, the outer ring of the second bearing 42 is fixedly connected to the second outer sleeve 43, and the second inner shaft 44 is fixedly connected to the middle tube 41, and the second outer sleeve 43 is fixedly connected to the second U-shaped frame 12. By rotating the second outer sleeve 43, the second U-shaped frame 12 is driven to rotate, and the second U-shaped frame 12 and the middle tube 41 rotate relative to each other. At the same time, the second U-shaped frame 12 drives the load-bearing cabin 2 to perform azimuth rotation adjustment. The working principle of the turntable does not fall within the protection scope of this solution, so it is not described in detail. The waterproof platform 61 is located above the middle tube 41, and the middle tube 41 is in an inverted Ω shape. The first waterproof wall 63 is fixedly installed at the bottom of the waterproof platform 61 (and the two are integrally formed), the second waterproof wall 62 is fixedly installed at the top of the middle tube 41 (and the two are integrally formed), and the partition 69 is fixedly installed at the top of the middle tube 41 (and the two are integrally formed). During the rotation of the azimuth axis system 4, the middle tube 41 and the second U-shaped frame 12 rotate relatively, and the second waterproof wall 62 and the first waterproof wall 63 also rotate relatively. There is a small gap between the second waterproof wall 62 and the first waterproof wall 63, and the first waterproof wall 63 is located on the outside of the second waterproof wall 62. It is difficult for water to enter the gap between the second waterproof wall 62 and the first waterproof wall 63, and the water storage tank 6 4 is connected to the gap (the gap between the second waterproof wall 62 and the first waterproof wall 63), and the opening 65 is located near the lower end of the second waterproof wall 62. When facing a large and rapid water flow, part of the water will flow from the outside to the inside and from the bottom to the top into the water storage tank 64, forming a good buffer in the water storage tank 64. As the inflow of water increases, the water flows out from the opening 65 in the water storage tank 64 to the outside, achieving the waterproof sealing effect of the azimuth axis system 4, and the depth of the water storage tank 64 along the top and bottom is L4, the width is L5, the height of the part at the same horizontal height between the first waterproof wall 63 and the second waterproof wall 62 is L6, and the larger the values ​​of L4, L5 and L6, the better the diversion effect and the better the sealing effect. The distance between the opening 65 and the top of the middle tube 41 is L7. 1 Among them, the waterproof platform 61, the second waterproof wall 62, the first waterproof wall 63 and the partition 69 all take the central axis of the second inner axis 44 as the central axis.

[0038] In one embodiment, a first sealing ring 7 is provided between the first outer sleeve 32 and the first U-shaped frame 11 , and a second sealing ring 8 is provided between the first inner shaft 33 and the bearing compartment 2 .

[0039] The first sealing ring 7 is fixedly installed between the first outer sleeve 32 and the first U-shaped frame 11 to seal the gap between the first outer sleeve 32 and the first U-shaped frame 11; the second sealing ring 8 is fixedly installed between the first inner shaft 33 and the load-bearing cabin 2 to seal the gap between the first inner shaft 33 and the load-bearing cabin 2, thereby improving the waterproof effect.

[0040] In one embodiment, each first waterproof sealing assembly 5 also includes at least two annular first protrusions 54 arranged on the first outer sleeve 32 and with the first inner shaft 33 as the central axis, each first protrusion 54 is located between the first groove 51 and the load-bearing cabin 2, and the side wall of the load-bearing cabin 2 is provided with an annular second groove 55 corresponding to each first protrusion 54, each first protrusion 54 and the second groove 55 constitute a first maze structure, and the first maze structure is connected to the water guide groove 53.

[0041] The first protrusion 54 is fixedly mounted on the outer wall of the first groove 51 on the side close to the load compartment 2 (and the first protrusion 54 and the outer wall of the first groove 51 on the side close to the load compartment 2 are integrally formed), and each first protrusion 54 is inserted into the corresponding second groove 55. Since the first outer sleeve 32 and the load compartment 2 rotate relative to each other during the rotation of the pitch axis system 3, there is a gap between each first protrusion 54 and the corresponding second groove 55. In the case of a large and rapid external water flow, it is inevitable that a small amount of water will flow from the water guide groove 53 from bottom to top into the first labyrinth structure. At this time, the first labyrinth structure can play a good role in isolating water sources. A small amount of water will flow along the circular surface of the first labyrinth structure located at the upper part of the first inner shaft 33 into the first labyrinth structure located at the lower part of the first inner shaft 33, and then flow into the water guide groove 53 located at the lower part of the first inner shaft 33, and finally flow out of the turntable, further improving the waterproof sealing effect of the pitch axis system 3. The first protrusion 54 and the second groove 55 are both centered on the central axis of the first inner shaft 33.

[0042] In one embodiment, each first waterproof sealing assembly 5 further includes an annular first sealing member 56 abutting between the first outer sleeve 32 and the first inner shaft 33 , and the first sealing member 56 is located on the inner side of each first protrusion 54 .

[0043] The first seal 56 is generally made of elastic material, and can be a silicone rubber piece, a felt ring, an oil seal or a magnetic fluid seal. The first seal 56 is located on the inner side of the first labyrinth structure. The first seal 56 can be fixedly mounted on the first outer sleeve 32 by a first annular pressure plate (such as Figure 2b) shown in the figure realizes the compression and fixation of the first seal 56. Through the setting of the first seal 56, the gap between the first inner shaft 33 and the first outer shaft sleeve 32 (the width of the first seal 56 is larger than the gap) is dynamically sealed to prevent water coming out of the first labyrinth structure from entering the gap (the gap between the first inner shaft 33 and the first outer shaft sleeve 32), thereby further improving the waterproof sealing effect of the pitch axis system 3.

[0044] In one embodiment, an inner wall of the hole 52 close to the carrying compartment 2 is provided with an eight-shaped cutout 57 .

[0045] The direction of the cutout 57 on the hole slot 52 on the right side of the first U-shaped frame 11 and above the first inner shaft 33 is inclined from the upper left to the lower right, and the direction of the cutout 57 on the hole slot 52 on the right side of the first U-shaped frame 11 and below the first inner shaft 33 is inclined from the lower left to the upper right, and the direction of the cutout 57 on the hole slot 52 on the left side of the first U-shaped frame 11 is opposite to the direction of the cutout 57 on the hole slot 52 on the left side; by setting the cutout 57, better diversion of the incoming water flow is achieved. The height of the cutout 57 along the height direction is L1, and the larger the value of L1, the better the diversion effect and the better the sealing effect.

[0046] In one embodiment, the second waterproof sealing assembly 6 also includes at least two annular second protrusions 66 arranged at the bottom of the waterproof platform 61, and the top of the middle tube 41 is also provided with a third protrusion 67 corresponding to the second protrusion 66. The second protrusions 66 and the third protrusions 67 are staggered and distributed, and form a second maze structure with the partition 69, and the second maze structure is connected to the water storage tank 64.

[0047] The second protrusion 66 is fixedly connected to the waterproof platform 61, and the two are integrally formed. The third protrusion 67 is fixedly connected to the middle tube 41, and the two are integrally formed. The second protrusion 66 is located on the inner side of the partition 69. The number of the third protrusion 67 corresponds to that of the second protrusion 66. The two third protrusions 67 and the partition 69 together form two grooves. The two second protrusions 66 are respectively inserted in the two grooves to form a second labyrinth structure, and there is a gap between the second protrusion 66 and the groove. When the external water flow is large, it is inevitable that a small amount of water will flow from the water storage tank 64 into the second labyrinth structure, but it will be isolated by the second labyrinth structure to prevent the water from entering the azimuth axis system 4 again, further improving the waterproof sealing effect of the azimuth axis system 4. The second protrusion 66 and the third protrusion 67 are both centered on the central axis of the second inner axis 44.

[0048] In one embodiment, the second waterproof sealing assembly 6 further includes a second sealing member 68 in an annular shape abutting between the second outer sleeve 43 and the second inner shaft 44 .

[0049] The second sealing member 68 is generally made of elastic material, and may be a silicone rubber member, a felt ring, an oil seal or a magnetic fluid seal, etc. The second sealing member 68 may be fixedly mounted on the second outer sleeve 43 by a second annular pressure plate (such as Figure 3 c) as shown is used to compress and fix the second seal 68. Through the setting of the second seal 68, the gap between the second inner shaft 44 and the second outer shaft sleeve 43 (the width of the second seal 68 is larger than the gap) is dynamically sealed to prevent water from coming out of the second labyrinth structure from entering the gap, thereby further improving the waterproof sealing effect of the azimuth shaft system 4.

[0050] In one embodiment, a third sealing ring 9 is provided between the second outer sleeve 43 and the second U-shaped frame 12 , and a fourth sealing ring 10 is provided between the second inner shaft 44 and the middle cylinder 41 .

[0051] The third sealing ring 9 is fixedly installed between the second outer sleeve 43 and the second U-shaped frame 12 to seal the gap between the second outer sleeve 43 and the second U-shaped frame 12; the fourth sealing ring 10 is fixedly installed between the second inner shaft 44 and the middle cylinder 41 to seal the gap between the second inner shaft 44 and the middle cylinder 41 to improve the waterproof effect.

[0052] like Figure 4 and Figure 5 The arrows in the figure respectively indicate the direction in which water flows from the outside to the pitch axis system 3 and the azimuth axis system 4.

[0053] The waterproof sealing device of the turntable shaft system is provided with a water guide groove in the pitch shaft system, so that the water flow has a good buffering and diversion effect in the water guide groove when flowing through the pitch shaft system, thereby achieving the waterproof sealing effect of the pitch shaft system. At the same time, the waterproof sealing effect of the pitch shaft system is further improved by the first labyrinth structure and the first sealing member. The first waterproof wall and the second waterproof wall are provided in the azimuth shaft system, so that most of the water flow is blocked outside when flowing through the azimuth shaft system, and a good buffer is formed for the water flow through the water storage tank. As the inflow of water increases, the water flow flows out from the opening in the water storage tank to the outside, thereby achieving the waterproof sealing effect of the azimuth shaft system. At the same time, the second labyrinth and the second sealing member are provided, thereby further improving the waterproof sealing effect of the azimuth shaft system. The problem that the sealing in the prior art only through the labyrinth structure cannot achieve a good sealing effect, and the problem that the sealing in the prior art through the oil seal leads to higher requirements on the shaft system processing accuracy, increases the friction resistance of the shaft system, and increases the requirements on the output torque of the motor are solved.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-described embodiments only express the more specific and detailed embodiments described in this application, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of this application, which all belong to the protection scope of this application. Therefore, the protection scope of the patent application shall be based on the attached claims.

Claims

1. A waterproof sealing device for the shaft system of a turntable, used for sealing the shaft system of the turntable, Features: The turntable comprises an H-shaped bracket (1), the upper half of the H-shaped bracket (1) is a first U-shaped bracket (11), the lower half of the H-shaped bracket (1) is a second U-shaped bracket (12), the turntable further comprises a load-bearing cabin (2) arranged in the first U-shaped bracket (11), both sides of the load-bearing cabin (2) are respectively provided with pitch axis systems (3) connected to the first U-shaped bracket (11), the second U-shaped bracket (12) is provided with an azimuth axis system (4), the turntable axis system waterproof sealing device comprises a first waterproof sealing assembly (5) respectively arranged in each pitch axis system (3), and a second waterproof sealing assembly (6) arranged in the azimuth axis system (4), wherein: Each of the pitch shaft systems (3) comprises a first outer shaft sleeve (32) and a first inner shaft (33) connected via a first bearing (31), wherein the first outer shaft sleeve (32) is connected to the first U-shaped frame (11), and the first inner shaft (33) is connected to the bearing cabin (2); Each of the first waterproof sealing components (5) comprises a first annular groove (51) formed on the first outer sleeve (32), a hole groove (52) is formed on both sides of the first U-shaped frame (11), each of the first outer sleeves (32) is located in the corresponding hole groove (52), the first groove (51) and the hole groove (52) form a water guide groove (53), a first gap is formed between the load-bearing cabin (2) and the first U-shaped frame (11), and the first gap is connected to the water guide groove (53); The azimuth shaft system (4) comprises a middle cylinder (41), and a second outer shaft sleeve (43) and a second inner shaft (44) located inside the middle cylinder (41) and connected via a second bearing (42), wherein the second outer shaft sleeve (43) is connected to the second U-shaped frame (12), and the second inner shaft (44) is connected to the middle cylinder (41); The second waterproof sealing component (6) comprises a circular waterproof platform (61) arranged on the outer wall of the second U-shaped frame (12) and an annular second waterproof wall (62) arranged on the top of the middle tube (41); an annular first waterproof wall (63) is installed at the bottom of the waterproof platform (61), and the first waterproof wall (63) is located on the outside of the second waterproof wall (62); the top of the middle tube (41) is also provided with an annular partition (69) located on the inside of the second waterproof wall (62); the waterproof platform (61), the second waterproof wall (62), the top of the middle tube (41) and the partition (69) constitute a water storage tank (64), and the second waterproof wall (62) is provided with at least one opening (65).

2. The waterproof sealing device for the shaft system of a turntable according to claim 1, Features: A first sealing ring (7) is provided between the first outer shaft sleeve (32) and the first U-shaped frame (11), and a second sealing ring (8) is provided between the first inner shaft (33) and the bearing compartment (2).

3. The waterproof sealing device for the shaft system of a turntable according to claim 1, Features: Each of the first waterproof sealing components (5) further comprises at least two annular first protrusions (54) arranged on the first outer shaft sleeve (32) and having the first inner shaft (33) as a central axis, each of the first protrusions (54) being located between the first groove (51) and the load-bearing compartment (2), and a side wall of the load-bearing compartment (2) being provided with an annular second groove (55) corresponding to each of the first protrusions (54), each of the first protrusions (54) and the second groove (55) forming a first labyrinth structure, and the first labyrinth structure being connected to the water guide groove (53).

4. The waterproof sealing device for the shaft system of a turntable as claimed in claim 3, Features: Each of the first waterproof sealing assemblies (5) further comprises a first annular sealing member (56) abutting between the first outer sleeve (32) and the first inner shaft (33), and the first sealing member (56) is located on the inner side of each first protrusion (54).

5. The waterproof sealing device for the shaft system of a turntable according to claim 1, Features: An incision (57) in the shape of an eight is provided on the inner wall of one side of the hole groove (52) close to the carrying compartment (2).

6. The waterproof sealing device for the shaft system of a turntable according to claim 1, Features: The second waterproof sealing component (6) further comprises at least two annular second protrusions (66) arranged at the bottom of the waterproof platform (61), and the top of the middle tube (41) is also provided with a third protrusion (67) corresponding to the second protrusion (66), and each of the second protrusions (66) and the third protrusion (67) is staggered and distributed, and forms a second maze structure with the partition (69), and the second maze structure is connected to the water storage tank (64).

7. The waterproof sealing device for the shaft system of a turntable according to claim 1, Features: The second waterproof sealing assembly (6) further comprises a second sealing member (68) in an annular shape abutting between the second outer shaft sleeve (43) and the second inner shaft (44).

8. The waterproof sealing device for the shaft system of a turntable according to claim 1, Features: A third sealing ring (9) is provided between the second outer shaft sleeve (43) and the second U-shaped frame (12), and a fourth sealing ring (10) is provided between the second inner shaft (44) and the middle cylinder (41).

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