The central body is equipped with oil, electricity, water and air supply.

Abstract

The present invention discloses a combined central body that integrates oil, electricity, water and air in a centralized arrangement, comprising a hollow shaft, a rotary joint and a sleeve that is sealed and fitted on the shaft. The sleeve and the shaft together enclose a water outflow channel, a water return channel, an oil outflow channel and an oil return channel that are separated from each other. The sleeve can rotate around the shaft and is provided with a water outflow joint, a water return joint, an oil outflow joint and an oil return joint; the hollowness of the shaft forms a central channel that axially penetrates the shaft, and the shaft is also provided with a water input channel connected to the water outflow channel, an oil input channel connected to the oil outflow channel, a water output channel connected to the water return channel and an oil output channel connected to the oil return channel; the rotary joint is assembled at the upper end of the shaft, and the rotary joint is provided with a ventilation channel and an electricity channel that are connected to the central channel and separated from each other; so as to achieve the purpose of being neat and easy to maintain.

Description

Technical Field

[0001] The invention relates to the field of automated production equipment, and in particular to a combined central body that integrates oil, electricity, water and air in a centralized arrangement. Background Art

[0002] As we all know, in automated production equipment, the use of various cylinders, oil cylinders, motors and cooling devices is indispensable. Therefore, wiring processing for ventilation, electricity, water and oil is indispensable.

[0003] Among them, for the production line of footwear products, it includes a turntable, a plurality of molding dies arranged in a circle at equal intervals in the circumference of the turntable, a mold opening and closing mechanism mounted on the turntable and used to drive the molding dies to open and close, a cooling device used to cool the products molded by the molding dies, and an electric box used to control the coordinated operation of each mold opening and closing mechanism. Since the mold opening and closing mechanism and the molding dies rotate together with the turntable, and the existing ventilation, power supply, water supply and oil supply wiring are scattered and unreasonable, there is a defect that it is messy and inconvenient to maintain.

[0004] Therefore, there is an urgent need for a neat and tidy combination center body that is convenient for maintenance and repair, which is equipped with oil, electricity, water and ventilation and is centrally arranged to overcome the above-mentioned defect. Summary of the invention

[0005] The object of the present invention is to provide a combined central body which is neat and easy to maintain and has oil, electricity, water and air passages arranged in a centralized manner.

[0006] In order to achieve the above-mentioned purpose, the combined central body of the present invention, which integrates oil, electricity, water and air in a centralized arrangement, comprises a hollow shaft, a rotary joint and a sleeve which is sealed and fitted on the shaft. The shaft sleeve and the shaft body jointly enclose a water outflow channel, a water return channel, an oil outflow channel and an oil return channel which are separated from each other. The shaft sleeve can rotate around the shaft body and is provided with a water outflow joint connected to the water outflow channel, a water return joint connected to the water return channel, an oil outflow joint connected to the oil outflow channel and an oil return joint connected to the oil return channel; the hollowness of the shaft body forms a central channel axially passing through the shaft body, and the shaft body is also provided with a water input channel connected to the water outflow channel, an oil input channel connected to the oil outflow channel, a water output channel connected to the water return channel and an oil output channel connected to the oil return channel; the rotary joint is assembled at the upper end of the shaft body, and the rotary joint is provided with an air channel and an electrical channel which are connected to the central channel and are separated from each other.

[0007] Preferably, the shaft sleeve includes a first shaft sleeve and a second shaft sleeve, the first shaft sleeve and the shaft body together enclose the water outflow channel and the water return channel, the second shaft sleeve and the shaft body together enclose the oil outflow channel and the oil return channel, the water outflow joint and the water return joint are located in the first shaft sleeve, and the oil outflow joint and the oil return joint are located in the second shaft sleeve.

[0008] Preferably, the combined central body for integrating oil, electricity, water and air in a centralized arrangement of the present invention further includes an intermediate connecting ring, one end of which is detachably fixed to the first sleeve by a first fastener, and the other end of which is detachably fixed to the second sleeve by a second fastener.

[0009] Preferably, the inner side wall of the first sleeve has a first convex ring, a second convex ring and a third convex ring which protrude toward the shaft body and are tightly fitted with the shaft body. The first convex ring, the second convex ring and the third convex ring are arranged in sequence from bottom to top along the shaft body, and a sealing ring is installed between the first convex ring, the second convex ring and the third convex ring and the shaft body respectively. One of the water outflow channel and the water return channel is located between the first convex ring and the second convex ring, and the other of the water outflow channel and the water return channel is located between the second convex ring and the third convex ring.

[0010] Preferably, a rotating bearing arranged one above and one below is mounted between the inner wall of the first sleeve and the shaft body, the upper rotating bearing is located above the third convex ring and axially abuts against the third convex ring, and the lower rotating bearing is located below the first convex ring and axially abuts against the first convex ring.

[0011] Preferably, the inner side wall of the second sleeve has a first ring platform, a second ring platform and a third ring platform which protrude toward the shaft body and are tightly fitted with the shaft body. The first ring platform, the second ring platform and the third ring platform are arranged in sequence from bottom to top along the shaft body, and a sealing ring is installed between the first ring platform, the second ring platform and the third ring platform and the shaft body respectively. One of the oil outflow channel and the oil return channel is located between the first ring platform and the second ring platform, and the other of the oil outflow channel and the oil return channel is located between the second ring platform and the third ring platform.

[0012] Preferably, a rotating bearing arranged one above and one below is installed between the inner wall of the second sleeve and the shaft body, the upper rotating bearing is located above the third ring stage and axially abuts against the third ring stage, and the lower rotating bearing is located below the first ring stage and axially abuts against the first ring stage.

[0013] Preferably, the water outflow channel and the water return channel are respectively located below the oil outflow channel and the oil return channel.

[0014] Preferably, the shaft body includes a lower shaft body and an upper shaft body fixed in the axial direction, the central channel passes through the lower shaft body and the upper shaft body, the central channel of the lower shaft body is larger than the central channel of the upper shaft body, and the water input channel, oil input channel, water output channel and oil output channel pass downward through the upper shaft body and are located in the central channel of the lower shaft body.

[0015] Preferably, the combined central body of the present invention that integrates oil, electricity, water and air in a centralized arrangement also includes an electric box turntable fixed to the upper end of the shaft sleeve and surrounding the rotary joint from all sides.

[0016] Compared with the prior art, the shaft sleeve is sealed and fitted on the shaft body and surrounds the water outflow channel, water return channel, oil outflow channel and oil return channel separated from each other, and the shaft sleeve can rotate around the shaft body and is provided with a water outflow joint connected to the water outflow channel, a water return joint connected to the water return channel, an oil outflow joint connected to the oil outflow channel and an oil return joint connected to the oil return channel; and the shaft body is also provided with a water input channel connected to the water outflow channel, an oil input channel connected to the oil outflow channel and an oil return channel connected to the oil return channel. The shaft body is provided with an inlet channel, a water output channel connected with the water return channel, and an oil output channel connected with the oil return channel. The rotary joint is assembled at the upper end of the shaft body and is provided with an air channel and an electric channel which are connected with the central channel and separated from each other. This design centrally arranges the air, water, electricity and oil passages, making the whole simple for easy maintenance. At the same time, with the help of the rotation of the shaft sleeve and the rotary joint relative to the shaft body, the external water input pipe, the external return water pipe, the external oil input pipe, the external return oil pipe, the external air pipe and the external cable can be prevented from being entangled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the combined central body of the present invention which integrates oil, electricity, water and ventilation in a centralized arrangement.

[0018] Figure 2 yes Figure 1 The schematic diagram of the planar structure of the combined central body shown is viewed from bottom to top.

[0019] Figure 3 is along Figure 2 Schematic diagram of the internal structure after cutting along the AA line.

[0020] Figure 4 is along Figure 2 Schematic diagram of the internal structure after sectioning along the midline BB.

[0021] Figure 5 yes Figure 1 The schematic diagram of the three-dimensional structure in which the combined central body is installed on both the turntable and the supporting base.

[0022] Figure 6 yes Figure 5 The diagram is a schematic diagram of the internal structure of the combined center body after being cut by a plane passing through its center line, and the diagram only shows part of the turntable and part of the supporting base. DETAILED DESCRIPTION

[0023] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.

[0024] See also Figures 1 to 4The combined center body 100 of the present invention, which integrates oil, electricity, water and air in a centralized arrangement, comprises a hollow shaft body 10, a rotary joint 20 and a sleeve 30 which is sealed and fitted on the shaft body 10. The sleeve 30 and the shaft body 10 together enclose a water outflow channel 41, a water return channel 42, an oil outflow channel 43 and an oil return channel 44 which are separated from each other. The sleeve 30 can rotate around the shaft body 10 and is provided with a water outflow joint 31 which is connected to the water outflow channel 41, a water return joint 32 which is connected to the water return channel 42, an oil outflow joint 33 which is connected to the oil outflow channel 43 and an oil return joint 34 which is connected to the oil return channel 44, so that the water body can be circulated back and forth by means of the cooperation of the water outflow joint 31 and the water return joint 32, and the oil can be circulated back and forth by means of the cooperation of the oil outflow joint 33 and the oil return joint 34. The hollowness of the shaft body 10 forms a central channel 11 which axially penetrates the shaft body 10. The shaft body 10 is also provided with a water input channel 12 connected to the water outflow channel 41, an oil input channel 13 connected to the oil outflow channel 43, a water output channel 14 connected to the water return channel 42, and an oil output channel 15 connected to the oil return channel 44, so as to facilitate the assembly of the external input water pipe 71 on the water input channel 12, the assembly of the external input oil pipe 73 on the oil input channel 13, the assembly of the external return water pipe 72 on the water output channel 14, and the assembly of the external return oil pipe 74 on the oil output channel 15. The rotary joint 20 is assembled on the upper end of the shaft body 10, and the shaft body 10 provides support for the rotary joint 20; the rotary joint 20 is provided with a ventilation channel 21 and a power channel 22 that are connected to the central channel 11 and separated from each other, so that the external air pipe 75 can be inserted from the bottom of the central channel 11 and then assembled at the ventilation channel 21, and the external cable 250 can be inserted from the bottom of the central channel 11 and then pass out from the power channel 22 of the rotary joint 20, so as to meet the assembly needs of the controller in the electric box turntable 60 described below. Specifically, the combined central body 100 of the present invention also includes an electric box turntable 60 fixed to the upper end of the sleeve 30 and surrounding the rotary joint 20 from all sides, so that the electric box turntable 60 can rotate relative to the shaft body 10 with the sleeve 30, so as to facilitate the controller installed in the electric box turntable 60 to rotate with the electric box turntable 60, and then with the cooperation of the rotary joint 20, the entanglement of the external cable 250 and the external air pipe 75 can be avoided. It should be noted that, since the specific structure of the rotary joint 20 is well known in the art, it will not be described in detail here. More specifically, it is as follows:

[0025] like Figure 3 and Figure 4As shown, the sleeve 30 includes a first sleeve 30a and a second sleeve 30b. The first sleeve 30a and the shaft body 10 together enclose a water outflow channel 41 and a water return channel 42, and the second sleeve 30b and the shaft body 10 together enclose an oil outflow channel 43 and an oil return channel 44; the water outflow joint 31 and the water return joint 32 are located on the first sleeve 30a, and the oil outflow joint 33 and the oil return joint 34 are located on the second sleeve 30b; the purpose of such design is to facilitate the processing of the water outflow channel 41 and the water return channel 42 on the first sleeve 30a, and the processing of the oil outflow channel 43 and the oil return channel 44 on the sleeve 30, and to ensure the convenience of assembly operation and sealing reliability between the sleeve 30 and the shaft body 10. Specifically, the combined center body 100 of the present invention further includes an intermediate connecting ring 50, one end of the intermediate connecting ring 50 is detachably fixed to the first sleeve 30a by means of a first fastener 51, and the other end of the intermediate connecting ring 50 is detachably fixed to the second sleeve 50b by means of a second fastener 52. The purpose of such a design is to facilitate the assembly and disassembly operations of the first sleeve 30a and the second sleeve 30b with the shaft body 10, respectively, and to make the first sleeve 30a and the second sleeve 30b connected as a whole through the intermediate connecting ring 50; preferably, the second sleeve 30b is located above the first sleeve 30a so that The water outflow channel 41 and the water return channel 42 are respectively located below the oil outflow channel 43 and the oil return channel 44, effectively avoiding water leakage caused by water vapor generated in the cooling process of the water body and being mistaken for oil leakage, so that oil and water can be fully identified, making maintenance more convenient; for example, the first fastener 51 and the second fastener 52 are each a screw, and they are respectively arranged in a row in the circumferential direction of the middle connecting ring 50. The purpose of such an arrangement is to increase the reliability of fixing the middle connecting ring 50 to the first sleeve 30a and the second sleeve 30b respectively, but not limited to this.

[0026] like Figure 3 and Figure 4As shown, the inner side wall 351 of the first sleeve 30a has a first convex ring 352, a second convex ring 353 and a third convex ring 354 that protrude toward the shaft body 10 and fit tightly with the shaft body 10. The first convex ring 352, the second convex ring 353 and the third convex ring 354 are arranged in sequence from bottom to top along the shaft body 10, and a sealing ring 355 is installed between the first convex ring 352, the second convex ring 353 and the third convex ring 354 and the shaft body 10. This design more effectively ensures that the first sleeve 30a is The sealing reliability and rotation smoothness between the sleeve 30a and the shaft body 10; the water outflow channel 41 is located between the first convex ring 352 and the second convex ring 353, and the water return channel 42 is located between the second convex ring 353 and the third convex ring 354; of course, according to actual needs, the water return channel 42 can be located between the first convex ring 352 and the second convex ring 353, and correspondingly, the water outflow channel 41 is located between the second convex ring 353 and the third convex ring 354, so it is not limited to this. Specifically, a rotation bearing 356 is installed between the inner wall 351 of the first sleeve 30a and the shaft body 10, and the upper rotation bearing 356 is located above the third convex ring 354 and axially abuts against the third convex ring 354, and the lower rotation bearing 356 is located below the first convex ring 352 and axially abuts against the first convex ring 352, so as to increase the smoothness of the rotation of the first sleeve 30a around the shaft body 10; and then with the help of the intermediate connecting ring 50, the upper and lower rotation bearings 356 on the first sleeve 30a and the shaft body 10 are facilitated. Installation and disassembly operations.

[0027] like Figure 3 and Figure 4As shown, the inner side wall 361 of the second sleeve 30b has a first ring platform 362, a second ring platform 363 and a third ring platform 364 that protrude toward the shaft body 10 and fit tightly with the shaft body 10. The first ring platform 362, the second ring platform 363 and the third ring platform 364 are arranged in sequence from bottom to top along the shaft body 10, and a sealing ring 366 is installed between the first ring platform 362, the second ring platform 363 and the third ring platform 364 and the shaft body 10. This design can more effectively ensure the second shaft The sealing reliability and rotation smoothness between the sleeve 30b and the shaft body 10 are improved; the oil outflow channel 43 is located between the first ring platform 362 and the second ring platform 363, and the oil return channel 44 is located between the second ring platform 363 and the third ring platform 364; of course, according to actual needs, the oil return channel 44 can be located between the first ring platform 362 and the second ring platform 363, and correspondingly, the oil outflow channel 43 is located between the second ring platform 363 and the third ring platform 364, so it is not limited to this. Specifically, a rotating bearing 366 arranged one above and one below is installed between the inner wall 361 of the second sleeve 30b and the shaft body 10. The upper rotating bearing 366 is located above the third ring stage 364 and axially abuts against the third ring stage 364, and the lower rotating bearing 366 is located below the first ring stage 362 and axially abuts against the first ring stage 362 to increase the smoothness of the rotation of the second sleeve 30b around the shaft body 10; and with the help of the intermediate connecting ring 50, the upper and lower rotating bearings 366 on the second sleeve 30a and the shaft body 10 are facilitated.

[0028] like Figure 3 and Figure 4 As shown, to facilitate assembly and disassembly operations, the shaft body 10 includes an axially fixed lower shaft body 10a and an upper shaft body 10b. Preferably, the lower shaft body 10a and the upper shaft body 10b are fixed together by screws to facilitate operations between the lower shaft body 10a and the upper shaft body 10b; and the screws are inserted into the lower shaft body 10a and the upper shaft body 10b along the axial direction of the shaft body 10, which can prevent the screws from increasing the occupied space due to radially protruding from the shaft body 10, but is not limited to this. The central channel 11 passes through the lower shaft body 10a and the upper shaft body 10b. The central channel 11 of the lower shaft body 10a is larger than the central channel 11 of the upper shaft body 10b, so that the external input water pipe 71, the external return water pipe 72, the external input oil pipe 73, the external return oil pipe 74, the external air pipe 75 and the external cable 250 can be inserted from the central channel 11 of the lower shaft body 10a and then assembled at the corresponding position; the water input channel 12, the oil input channel 13, the water output channel 14 and the oil output channel 15 pass downward through the upper shaft body 10b and are located in the central channel 11 of the lower shaft body 10a. This arrangement is more convenient for the assembly operation between the external input water pipe 71, the external return water pipe 72, the external input oil pipe 73 and the external return oil pipe 74 and the upper shaft body 10b.

[0029] See also Figure 5and Figure 6 The shaft body 10 in the combined central body 100 of the present invention is fixed on the bearing base 220 so as to stand on the ground with the help of the bearing base 220; preferably, the lower shaft body 10 is fixed on the bearing base 220 with the help of fasteners (such as but not limited to screws), so that the shaft body 10 and the bearing base 200 are fixed together. The turntable 210 is mounted on the shaft body 10, preferably, the turntable 210 is mounted on the lower shaft body 10a; specifically, the turntable 210 can be mounted on the lower shaft body 10a with the help of an assembly bearing 230, so that the turntable 210 can rotate around the shaft body 10. The shaft sleeve 30 is fixedly connected to the turntable 210 through the intermediate connecting bracket 240, so that the turntable 210 drives the shaft sleeve 30 and the electric box turntable 60 fixedly connected to the shaft sleeve 30 to rotate around the shaft body 10 through the intermediate connecting bracket 240.

[0030] It should be noted that in Figure 3 In the embodiment, the flow process of the external water body is: the water body enters from the external input water pipe 71, then flows through the water input channel 12, the water outflow channel 41, the water outflow joint 31, the water return joint 32, the water return channel 42 and the water output channel 14 in sequence, and then flows out from the external return water pipe 72; similarly, in Figure 4 In the figure, the flow process of the external oil is: the oil enters from the external input oil pipe 73, and then flows through the oil input channel 13, the oil outflow channel 431, the oil outflow joint 33, the oil return joint 34, the oil return channel 44 and the oil output channel 15 in sequence, and then flows out from the external return oil pipe 74.

[0031] Compared with the prior art, the shaft sleeve 30 is sealed and fitted on the shaft body 10 and encloses a water outflow channel 41, a water return channel 42, an oil outflow channel 43 and an oil return channel 44 separated from each other with the shaft body 10, and the shaft sleeve 30 can rotate around the shaft body 10 and is provided with a water outflow joint 31 connected to the water outflow channel 41, a water return joint 32 connected to the water return channel 42, an oil outflow joint 33 connected to the oil outflow channel 43 and an oil return joint 34 connected to the oil return channel 44; and the shaft body 10 is also provided with a water input channel 12 connected to the water outflow channel 41, an oil input channel 13 connected to the oil outflow channel 43 and an oil return channel 44. An input channel 13, a water output channel 14 connected to the water return channel 42, and an oil output channel 15 connected to the oil return channel 44, a rotary joint 20 is assembled on the upper end of the shaft body 10 and is provided with an air channel 21 and an electric channel 22 which are connected to the central channel 11 and separated from each other; this design centrally arranges the ventilation, water, electricity and oil, making the overall structure simple for easy maintenance. At the same time, with the help of the rotation of the sleeve 30 and the rotary joint 20 relative to the shaft body 10, the external input water pipe 71, the external return water pipe 72, the external input oil pipe 73, the external return oil pipe 74, the external air pipe 75 and the external cable 250 can be prevented from being entangled.

[0032] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. A combined central body that integrates oil, electricity, water and ventilation in a centralized arrangement, suitable for a production line of footwear products, characterized in that: The invention comprises a hollow shaft body, a rotary joint and a sleeve which is sealed and fitted on the shaft body, wherein the sleeve and the shaft body together enclose a water outflow channel, a water return channel, an oil outflow channel and an oil return channel which are separated from each other, the sleeve can rotate around the shaft body and is provided with a water outflow joint connected to the water outflow channel, a water return joint connected to the water return channel, an oil outflow joint connected to the oil outflow channel and an oil return joint connected to the oil return channel, wherein ... The hollowness of the shaft body forms a central channel axially passing through the shaft body, and the shaft body is also provided with a water input channel connected to the water outflow channel, an oil input channel connected to the oil outflow channel, a water output channel connected to the water return channel, and an oil output channel connected to the oil return channel. The shaft body is fixed on a supporting base, and the rotary joint is assembled on the upper end of the shaft body. The rotary joint is provided with an air channel and an electrical channel which are connected to the central channel and separated from each other.

2. The combined central body for integrating oil, electricity, water and air in a centralized arrangement according to claim 1 is characterized in that: The shaft sleeve includes a first shaft sleeve and a second shaft sleeve. The first shaft sleeve and the shaft body together enclose the water outflow channel and the water return channel. The second shaft sleeve and the shaft body together enclose the oil outflow channel and the oil return channel. The water outflow joint and the water return joint are located on the first shaft sleeve, and the oil outflow joint and the oil return joint are located on the second shaft sleeve.

3. The combined central body for integrating oil, electricity, water and air in a centralized arrangement according to claim 2 is characterized in that: It also includes an intermediate connecting ring, one end of which is detachably fixed to the first sleeve by a first fastener, and the other end of which is detachably fixed to the second sleeve by a second fastener.

4. The combined central body for integrating oil, electricity, water and air in a centralized arrangement according to claim 2 or 3, characterized in that: The inner side wall of the first sleeve has a first convex ring, a second convex ring and a third convex ring which protrude toward the shaft body and are tightly fitted with the shaft body. The first convex ring, the second convex ring and the third convex ring are arranged in sequence from bottom to top along the shaft body, and a sealing ring is installed between the first convex ring, the second convex ring and the third convex ring and the shaft body respectively. One of the water outflow channel and the water return channel is located between the first convex ring and the second convex ring, and the other of the water outflow channel and the water return channel is located between the second convex ring and the third convex ring.

5. The combined central body for integrating oil, electricity, water and air in a centralized arrangement according to claim 4 is characterized in that: A rotating bearing arranged one above and one below is mounted between the inner side wall of the first sleeve and the shaft body. The upper rotating bearing is located above the third convex ring and axially abuts against the third convex ring, and the lower rotating bearing is located below the first convex ring and axially abuts against the first convex ring.

6. The combined central body for integrating oil, electricity, water and air in a centralized arrangement according to claim 2 or 3, characterized in that: The inner side wall of the second sleeve has a first ring platform, a second ring platform and a third ring platform which protrude toward the shaft body and are tightly fitted with the shaft body. The first ring platform, the second ring platform and the third ring platform are arranged in sequence from bottom to top along the shaft body, and a sealing ring is installed between the first ring platform, the second ring platform and the third ring platform and the shaft body respectively. One of the oil outflow channel and the oil return channel is located between the first ring platform and the second ring platform, and the other of the oil outflow channel and the oil return channel is located between the second ring platform and the third ring platform.

7. The combined central body for integrating oil, electricity, water and air in a centralized arrangement according to claim 6, characterized in that: A rotating bearing arranged one above and one below is mounted between the inner side wall of the second sleeve and the shaft body. The upper rotating bearing is located above the third ring stage and axially abuts against the third ring stage, and the lower rotating bearing is located below the first ring stage and axially abuts against the first ring stage.

8. The combined central body for integrating oil, electricity, water and air in a centralized arrangement according to claim 1 or 2, characterized in that: The water outflow channel and the water return channel are respectively located below the oil outflow channel and the oil return channel.

9. The combined central body for integrating oil, electricity, water and air in a centralized arrangement according to claim 1, characterized in that: The shaft body includes a lower shaft body and an upper shaft body fixed in the axial direction, the central channel runs through the lower shaft body and the upper shaft body, the central channel of the lower shaft body is larger than the central channel of the upper shaft body, and the water input channel, oil input channel, water output channel and oil output channel run downward through the upper shaft body and are located in the central channel of the lower shaft body.

10. The combined central body for integrating oil, electricity, water and air in a centralized arrangement according to claim 1, characterized in that: It also includes an electric box turntable which is fixed to the upper end of the shaft sleeve and surrounds the rotary joint from all sides.

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