A waterproof and cold-insulating shafting structure for the inner frame of a biaxial temperature-controlled turntable

Abstract

The present invention discloses a waterproof and cold-insulating shafting structure for the inner frame of a biaxial temperature-controlled turntable, which includes an inner frame. An inner frame main shaft is installed in the inner frame through a bearing assembly. A waterproof retaining ring is sleeved on the inner frame main shaft, and a lower heating plate is installed on the waterproof retaining ring. An insulating ring is installed at the upper end of the inner frame main shaft. An upper heating plate sleeved on the inner frame main shaft is arranged inside the insulating ring. A bushing ring fixed to the top of the inner frame main shaft is arranged above the upper heating plate. The upper end face of the bushing ring is lower than the upper end face of the insulating ring. An extended heat-insulating shaft is arranged at the upper end of the insulating ring, and a tabletop is installed at the upper end of the extended heat-insulating shaft. A tabletop cover is arranged on the top of the tabletop, and a rubber gasket is arranged between the tabletop cover and the tabletop. The present invention can prevent condensed water generated due to high and low temperature changes from entering the lower space of the inner frame shafting, playing a waterproof role; at the same time, it can delay the heat and cold exchange and reduce the generation of condensed water, and has the characteristics of simple structure, easy implementation, stability and reliability.

Description

Technical Field

[0001] The present invention relates to a waterproof and cold-insulating shafting structure for the inner frame of a biaxial temperature-controlled turntable. Background Art

[0002] In a biaxial temperature-controlled turntable, condensate will be generated due to the high and low temperature changes in the spaces such as the inner cavity of the incubator, the inner frame tabletop, and the shafting, which affects the normal operation and service life of components such as the slip ring, bearings, motors, and angle sensors of the inner frame shafting, and causes great adverse effects on the high-precision test work of the turntable in extremely high and low temperature environments.

[0003] At present, although most of the waterproof and cold-insulating shafting structures of the inner frame of biaxial temperature-controlled turntables adopt designs such as heat-insulating shafts, heating wires, extension shafts, and waterproof retaining rings, in extremely high and low temperature environments, for example, when cooling from +100°C to -70°C, then keeping warm for 12 hours, and then heating from -70°C to +100°C, and repeating this cycle, a large amount of condensate will be generated in the spaces such as the inner cavity of the incubator, the inner frame tabletop, and the shafting. The condensate will slowly seep into components such as the slip ring, bearings, motors, and angle sensors over time, making the turntable unable to perform high-precision test work normally. Summary of the Invention

[0004] The purpose of the present invention is to provide a waterproof and cold-insulating shafting structure for the inner frame of a biaxial temperature-controlled turntable to solve the problems in the above background art, and it has the characteristics of simple structure, easy implementation, stability, and reliability.

[0005] The technical solution adopted to achieve the above purpose is a waterproof and cold-insulating shafting structure for the inner frame of a biaxial temperature-controlled turntable, including an inner frame. An inner frame main shaft is installed in the inner frame through a bearing assembly. A waterproof retaining ring is sleeved on the inner frame main shaft, and a lower heating plate is installed on the waterproof retaining ring. An insulating circular ring is installed at the upper end of the inner frame main shaft. An upper heating plate sleeved on the inner frame main shaft is arranged inside the insulating circular ring. A slip ring fixed to the top of the inner frame main shaft is arranged above the upper heating plate. The upper end surface of the slip ring is lower than the upper end surface of the insulating circular ring. An extended heat-insulating shaft is arranged at the upper end of the insulating circular ring. A tabletop is installed at the upper end of the extended heat-insulating shaft. A tabletop cover is arranged on the top of the tabletop, and a rubber gasket is arranged between the tabletop cover and the tabletop.

[0006] Further, the waterproof retaining ring is made of stainless steel metal material, and the waterproof retaining ring is sleeved on the lower end of the inner frame main shaft, and the waterproof retaining ring is of a stepped structure.

[0007] Further, the insulating circular ring is made of zirconia ceramic material, and the insulating circular ring is installed between the inner frame main shaft and the extended heat-insulating shaft. The extended heat-insulating shaft, the insulating circular ring, and the inner frame main shaft are fixedly connected in series by bolts.

[0008] Further, the upper heating plate is installed inside the cold insulation ring, between the cold insulation ring and the inner frame main shaft; the lower heating plate is bonded to the waterproof retaining ring.

[0009] Further, the lengthened heat insulation shaft is made of stainless steel metal material, and a plurality of counterbores are evenly distributed on the lengthened heat insulation shaft, and the counterbores are of an elongated structure.

[0010] Beneficial effects

[0011] Compared with the prior art, the present invention has the following advantages.

[0012] 1. By providing a waterproof retaining ring on the inner frame main shaft in the present invention, the waterproof retaining ring rotates together with the inner frame main shaft, guiding the condensed water to the confluence groove of the turntable inner frame, thereby discharging the condensed water to achieve the waterproof effect of the lower end structure of the inner frame shafting.

[0013] 2. A cold insulation ring is provided at the upper end step of the inner frame main shaft in the present invention, and a lengthened heat insulation shaft is further provided above the cold insulation ring, and a plurality of elongated counterbores are evenly distributed inside the lengthened heat insulation shaft, thereby achieving the effect of heat insulation.

[0014] 3. By providing an upper heating plate between the inner frame main shaft and the cold insulation ring and a lower heating plate between the lower end of the inner frame main shaft and the waterproof retaining ring in the present invention, both heating plates are arranged far from the inner cavity of the temperature chamber, and the temperature change is relatively gentle. The water vapor spaces at these two places are heated, thereby creating a relatively dry working environment for components such as the confluence ring, bearing, motor, and angle sensor of the inner frame shafting.

[0015] 4. The present invention has the advantages of simple structure, easy implementation, stability and reliability. Description of the drawings

[0016] The present invention will be further described in detail below with reference to the drawings.

[0017] Figure 1 It is a structural schematic diagram of the present invention. Specific embodiments

[0018] The present invention will be further described below in conjunction with the embodiments and the drawings.

[0019] Such as Figure 1As shown in the figure, a waterproof and cold-insulating shafting structure for the inner frame of a biaxial temperature-controlled turntable, including an inner frame 12, an inner frame main shaft 2 is installed in the inner frame 12 through a bearing assembly 11, a waterproof retaining ring 1 is sleeved on the inner frame main shaft 2, a lower heating plate 10 is installed on the waterproof retaining ring 1, a cold-insulating ring 3 is installed at the upper end of the inner frame main shaft 2, an upper heating plate 4 sleeved on the inner frame main shaft 2 is arranged inside the cold-insulating ring 3, a current collector ring 5 fixed to the top of the inner frame main shaft 2 is arranged above the upper heating plate 4, the upper end face of the current collector ring 5 is lower than the upper end face of the cold-insulating ring 3, a lengthened heat-insulating shaft 6 is arranged at the upper end of the cold-insulating ring 3, a tabletop 9 is installed at the upper end of the lengthened heat-insulating shaft 6, a tabletop cover 8 is arranged on the top of the tabletop 9, and a rubber gasket 7 is arranged between the tabletop cover 8 and the tabletop 9.

[0020] The waterproof retaining ring 1 is made of stainless steel metal material, the waterproof retaining ring 1 is sleeved on the lower end of the inner frame main shaft 2, and the waterproof retaining ring 1 is of a stepped structure.

[0021] The cold-insulating ring 3 is made of zirconia ceramic material, the cold-insulating ring 3 is installed between the inner frame main shaft 2 and the lengthened heat-insulating shaft 6, and the lengthened heat-insulating shaft 6, the cold-insulating ring 3 and the inner frame main shaft 2 are fixed by being connected in series with bolts.

[0022] The upper heating plate 4 is installed inside the cold-insulating ring 3, between the cold-insulating ring 3 and the inner frame main shaft 2; the lower heating plate 10 is bonded to the waterproof retaining ring 1.

[0023] The lengthened heat-insulating shaft 6 is made of stainless steel metal material, a plurality of counterbores 13 are evenly distributed on the lengthened heat-insulating shaft 6, and the counterbores 13 are of an elongated structure.

[0024] In the present invention, the waterproof retaining ring 1 is sleeved on the lower end of the inner frame main shaft 2, the upper heating plate 4 and the current collector ring 5 are installed at the upper end of the inner frame main shaft 2, the lengthened heat-insulating shaft 6 is installed between the cold-insulating ring 3 and the tabletop 9, the rubber gasket 7 and the tabletop cover plate 8 are installed at the upper end of the tabletop 9, the lower heating plate 10 is installed on the waterproof retaining ring 1, and the inner frame main shaft 2 is installed on the inner frame 12 through the bearing assembly 11.

[0025] The waterproof retaining ring 1 is sleeved on the lower end of the inner frame main shaft 2, and the waterproof retaining ring 1 is of a stepped structure, which can guide the condensed water to flow downward; the cold-insulating ring 3 is installed between the inner frame main shaft 2 and the lengthened heat-insulating shaft 6, and there are multiple threaded through holes on the cold-insulating ring 3, through which the lengthened heat-insulating shaft 6 can be fixed to the inner frame main shaft 2 by bolts passing through the threaded through holes; the upper heating plate 4 is installed between the cold-insulating ring 3 and the inner frame main shaft 2; the lower heating plate 10 is bonded to the waterproof retaining ring 1 and is located at the lower end of the inner frame main shaft 2; a plurality of counterbores 13 are evenly distributed in the lengthened heat-insulating shaft 6, and the counterbores 13 are in an elongated shape, which can greatly increase the water vapor space for heat and cold exchange.

[0026] The waterproof retaining ring 1 is sleeved on the inner frame main shaft 2. A cold insulation ring 3 is installed at the upper end of the inner frame main shaft 2, and an upper heating plate 4 is installed between the cold insulation ring 3 and the inner frame main shaft 2; a slip ring 5 is installed on the inner frame main shaft 2, and the upper end face of the slip ring 5 is lower than the upper end face of the cold insulation ring 3 and is located at the lower end of the extended heat insulation shaft 6. A table top 9 is installed at the upper end of the extended heat insulation shaft 6, and a rubber gasket 7 is installed in the groove at the upper end of the table top 9. The rubber gasket 7 is pressed by a table top cover plate 8 to play a waterproof role. The lower heating plate 10 is bonded to the waterproof retaining ring 1 and is located at the lower end of the inner frame main shaft 2. A bearing assembly 11 is installed at the lower part of the inner frame main shaft 2. The waterproof retaining ring 1 is sleeved at the lower end of the inner frame main shaft 2, and the upper end face of the inner frame main shaft 2 is installed with a cold insulation ring 3; the upper heating plate 4 is installed between the slip ring 5 and the inner frame main shaft 2, the extended heat insulation shaft 6 is installed between the cold insulation ring 3 and the table top 9, the rubber gasket 7 is installed between the table top cover plate 8 and the table top 9, the lower heating plate 10 is installed on the waterproof retaining ring 1, and the bearing assembly 11 is installed on the inner frame main shaft 2.

[0027] The waterproof retaining ring 1 is sleeved at the lower end of the inner frame main shaft 2, and the waterproof retaining ring 1 is of a stepped structure. The waterproof retaining ring 1 is made of stainless steel metal material, and its thermal conductivity is 15.2 W·m -1 ·K -1 , only about 1 / 16 of the thermal conductivity of aluminum metal material 238 W·m -1 ·K -1 . It can not only play a waterproof role but also have a good cold insulation effect.

[0028] The cold insulation ring 3 is installed between the inner frame main shaft 2 and the extended heat insulation shaft 6. The cold insulation ring 3 is made of zirconia ceramic material, and the thermal conductivity of this material is 2.93 W·m -1 ·K -1 , only about 1 / 5 of that of stainless steel, and can play an excellent cold and heat insulation effect.

[0029] The upper heating plate 4 is installed between the cold insulation ring 3 and the inner frame main shaft 2, the lower heating plate 10 is bonded to the waterproof retaining ring 1, and the two heating plates are both arranged far from the inner cavity of the incubator, and the temperature change is relatively gentle, which can play the role of evaporating condensed water and providing a relatively dry working environment effect.

[0030] The extended heat insulation shaft 6 is made of stainless steel metal material and is provided with 8 evenly distributed counterbores 13, and the counterbores 13 are slender. The 8 slender counterbores 13 can accommodate enough air, and the thermal conductivity of air is 0.02454 W·m -1 ·K -1 , only about 1 / 120 of that of zirconia ceramic, and can play an excellent cold and heat insulation effect.

[0031] The material of the rubber gasket 7 is silicone rubber, with a long-term working temperature range of -100°C to +250°C and a thermal conductivity of 0.25 W·m -1 ·K -1 , which is only about 1 / 60 of that of stainless steel, and can achieve excellent heat and cold insulation effects here. Moreover, by only disassembling the rubber gasket 7 and the tabletop cover plate 8, the regular maintenance of the slip ring can be conveniently carried out.

[0032] In the present invention, a stainless steel waterproof retaining ring 1 is provided on the inner frame main shaft 2. The waterproof retaining ring 1 rotates together with the inner frame main shaft 2 to drain the condensed water to the slip ring groove of the turntable inner frame, thereby discharging the condensed water to achieve the waterproof effect of the lower end structure of the inner frame shaft system. An alumina ceramic cold insulation ring 3 is provided at the upper step of the inner frame main shaft 2. A stainless steel extended heat insulation shaft 6 is further provided at the upper end of the alumina ceramic cold insulation ring 3. Multiple slender counterbores 13 are evenly distributed inside the stainless steel extended heat insulation shaft to increase the air volume, thereby achieving the heat and cold insulation effect. By providing an upper heating plate 4 between the inner frame main shaft 2 and the alumina ceramic cold insulation ring 3, and a lower heating plate 10 between the lower end of the inner frame main shaft 2 and the stainless steel waterproof retaining ring 1, both heating plates are arranged far from the inner cavity of the incubator, and the temperature change is relatively gentle. The water vapor spaces at these two places are heated to create a relatively dry working environment for components such as the slip ring, bearing, motor, and angle sensor of the inner frame shaft system.

Claims

1. A waterproof and cold-insulating shafting structure for the inner frame of a biaxial temperature-controlled turntable, comprising an inner frame (12). Characterized in that an inner frame main shaft (2) is installed in the inner frame (12) through a bearing assembly (11). A waterproof retaining ring (1) is sleeved on the inner frame main shaft (2). A lower heating plate (10) is installed on the waterproof retaining ring (1). A cold-insulating ring (3) is installed at the upper end of the inner frame main shaft (2). An upper heating plate (4) sleeved on the inner frame main shaft (2) is arranged inside the cold-insulating ring (3). A slip ring (5) fixed to the top of the inner frame main shaft (2) is arranged above the upper heating plate (4). The upper end surface of the slip ring (5) is lower than the upper end surface of the cold-insulating ring (3). An extended heat-insulating shaft (6) is arranged at the upper end of the cold-insulating ring (3). A tabletop (9) is installed at the upper end of the extended heat-insulating shaft (6). A tabletop cover (8) is arranged on the top of the tabletop (9). A rubber gasket (7) is arranged between the tabletop cover (8) and the tabletop (9). The waterproof retaining ring (1) is made of stainless steel metal material and is sleeved on the lower end of the inner frame main shaft (2). The waterproof retaining ring (1) is of a stepped structure. The cold-insulating ring (3) is made of zirconia ceramic material and is installed between the inner frame main shaft (2) and the extended heat-insulating shaft (6). The extended heat-insulating shaft (6), the cold-insulating ring (3), and the inner frame main shaft (2) are fixedly connected in series by bolts. The upper heating plate (4) is installed inside the cold-insulating ring (3) and is located between the cold-insulating ring (3) and the inner frame main shaft (2). The lower heating plate (10) is bonded to the waterproof retaining ring (1). The extended heat-insulating shaft (6) is made of stainless steel metal material, and a plurality of counterbores (13) are evenly distributed on the extended heat-insulating shaft (6). The counterbores (13) are of an elongated structure.

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