Composite rotary joint device for crankshaft and crankshaft

Abstract

The composite rotary joint device comprises an extension shaft, an oil inlet joint and an air inlet joint are rotationally installed on the right side of the extension shaft, the air inlet joint is arranged on the right side of the oil inlet joint, the oil inlet joint is rotationally installed on the extension shaft, and a first air inlet channel is formed in the axis position of the extension shaft. The first air inlet channel penetrates through the front end and the rear end of the extension shaft and is communicated with the air inlet connector, a first oil inlet channel is further arranged in the extension shaft, the first oil inlet channel is located on one side of the first air inlet channel, and the first oil inlet channel is communicated with the oil inlet connector. The crankshaft is connected with the composite rotary joint device, the air inlet function and the oil inlet function of the crankshaft can be integrated on one side, the other side of the crankshaft is released, installation of the crankshaft and other functional accessories is facilitated, later maintenance of the crankshaft only needs to be conducted on one side of a machine table, and maintenance of the crankshaft is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of crankshaft, specifically a composite rotary joint device for crankshaft and crankshaft. BACKGROUND

[0002] In the existing automatic equipment machine table, many will involve the use of crankshaft, since the crankshaft needs high speed rotation, the rotating air inlet lens inlets air at the one side center of the crankshaft, and the rotating oil inlet joint inlets oil at the other end center of the crankshaft, which will lead to the space of the two end faces of the crankshaft being occupied, and more accessories, such as synchronous pulley, encoder, are needed for installation and adjustment, and the maintenance of the crankshaft is relatively inconvenient. SUMMARY

[0003] The utility model discloses a composite rotary joint device for crankshaft, which solves the technical problems in the background art.

[0004] To achieve the foregoing purposes, the utility model provides the following technical scheme:

[0005] A composite rotary joint device for crankshaft, comprising an extension shaft, an oil inlet joint and an air inlet joint are rotatably installed on the right side of the extension shaft, the air inlet joint is on the right side of the oil inlet joint, the oil inlet joint is rotatably installed on the extension shaft, a first air inlet channel is arranged at the shaft center position of the extension shaft, the first air inlet channel penetrates through the front and rear ends of the extension shaft, the first air inlet channel is communicated with the air inlet joint, a first oil inlet channel is further arranged in the extension shaft, the first oil inlet channel is on one side of the first air inlet channel, and the first oil inlet channel is communicated with the oil inlet joint.

[0006] The extension shaft sequentially comprises a first mounting table, a second mounting table and a third mounting table from left to right, the diameters of the first mounting table, the second mounting table and the third mounting table decrease gradually, the oil inlet joint is sleeved on the second mounting table, the oil inlet joint is coaxially arranged with the second mounting table, a first bearing is arranged between the oil inlet joint and the second mounting table, an oil inlet nozzle is arranged on the oil inlet joint, and the oil inlet nozzle is communicated with the first oil inlet channel.

[0007] The air inlet joint is installed on one side of the third mounting table, an installation shaft is arranged on one side of the air inlet joint, the installation shaft is inserted into one side of the third mounting table and communicated with the first air inlet channel, an air inlet nozzle is arranged on the air inlet joint and communicated with the first air inlet channel.

[0008] An oil seal is further arranged between the oil inlet joint and the second mounting table.

[0009] A crankshaft, comprising a crankshaft body and a clutch, the clutch being sleeved outside the crankshaft, and further comprising the composite rotary joint device for the crankshaft as claimed in any one of the preceding claims, the composite rotary joint device being installed on the right side of the crankshaft body, a first mounting table of the extension shaft being provided with a first recessed slot, the right side of the crankshaft body being provided with a first protruding plug which is inserted with the first recessed slot, and an O-shaped gasket being arranged between the first plug and the first slot; the crankshaft body is provided with a second air inlet channel and a second oil inlet channel at the shaft center position, the second air inlet channel being communicated with the clutch and the first air inlet channel, and the second oil inlet channel being communicated with the first oil inlet channel.

[0010] Compared with the prior art, the composite rotary joint device for the crankshaft and the crankshaft have the advantages that the structure layout of the composite rotary joint device is compact, the integration and simplification of functions are realized, the air inlet and oil inlet functions of the crankshaft are integrated on one side after the device is installed on the crankshaft, the other side of the crankshaft is released, the installation of other functional accessories is facilitated, and the maintenance of the crankshaft in the later period only needs to be performed on one side of the machine table, so that the maintenance of the crankshaft is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a front view of the composite rotary joint device of the present application.

[0012] Figure 2 It is an A-A sectional view of Figure 1

[0013] Figure 3 It is an installation view of the composite rotary joint device of the present application and the crankshaft.

[0014] Figure 4 It is a B-B sectional view of Figure 3 DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0016] Specific embodiment 1: please refer to Figure 1 and Figure 2 ​​The utility model discloses a kind of composite rotary joint devices for crankshaft, including extension shaft 1, extension shaft 1 right side rotation installation has oil inlet joint 2 and air inlet joint 3, air inlet joint 3 is in the right side of oil inlet joint 2, oil inlet joint 2 is rotationally installed on extension shaft 1, the axial position of extension shaft 1 is equipped with first air inlet channel 104, first air inlet channel 104 penetrates the front and rear end of extension shaft 1, first air inlet channel 104 is communicated with air inlet joint 3, first oil inlet channel 105 is further equipped in extension shaft 1, first oil inlet channel 105 is in the side of first air inlet channel 104, first oil inlet channel 105 and first air inlet channel 104 are parallelly arranged, first oil inlet channel 105 is communicated with oil inlet joint 2.

[0017] Extension shaft 1 is sequentially first mounting table 101, second mounting table 102 and third mounting table 103 from left to right, the diameter of first mounting table 101, second mounting table 102 and third mounting table 103 decreases, oil inlet joint 2 is sleeved on second mounting table 102, oil inlet joint 2 is coaxially arranged with second mounting table 102, first bearing is equipped between oil inlet joint 2 and second mounting table 102, oil inlet nozzle 201 is equipped on oil inlet joint 2, oil inlet nozzle 201 is communicated with first oil inlet channel 105, oil seal is further installed between oil inlet joint 2 and second mounting table 102. When the crankshaft rotates, oil inlet joint 2 remains stationary, first oil inlet channel 105 is arranged in eccentric position and communicated with the oil passage on the crankshaft, to lubricate other joint positions on the crankshaft.

[0018] Air inlet joint 3 is installed on the side of third mounting table 103, and the side of air inlet joint 3 is provided with a mounting shaft 301, the mounting shaft 301 is inserted into the side of third mounting table 103 and connected with the first air inlet channel 104, and the air inlet joint 3 is provided with an air inlet nozzle 302 communicated with the first air inlet channel 104.

[0019] Please refer to Figure 3 And Figure 4 A kind of crankshaft, including crankshaft body 7 and clutch 8, clutch 8 is sleeved on the outside of crankshaft body 7, further comprising the composite rotary joint device for crankshaft described above, composite rotary joint device is installed on the right side of crankshaft body 7, first mounting table 101 of extension shaft 1 is equipped with the first slot 101-1 of concave, the right side of crankshaft body 7 is provided with the first plug 701 of outward protruding and is inserted with the first slot 101-1, and O-ring 6 is arranged between the first plug 701 and the first slot 101-1;The axial position of the crankshaft is equipped with second air inlet channel 702 and second oil inlet channel 703, second air inlet channel 702 is communicated with clutch 8 and first air inlet channel 104, second oil inlet channel 703 is communicated with first oil inlet channel 105, and the other end of second oil inlet channel 703 is communicated with other joint points on the crankshaft body 7 to lubricate.

[0020] Compared with the prior art, the composite rotary joint device for the crankshaft and the crankshaft have the following advantages: compact structure layout, integration and simplification of functions, integration of the air intake and oil intake functions of the crankshaft on one side, release of the other side of the crankshaft, convenient installation of other functional accessories, and convenient maintenance of the crankshaft.

[0021] It is apparent for a person skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the foregoing description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0022] Furthermore, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A composite rotary joint device for a crankshaft, characterized by: The extension shaft is provided with an oil inlet joint and an air inlet joint which are rotatably mounted on the right side of the extension shaft, the air inlet joint is located on the right side of the oil inlet joint, the oil inlet joint is rotatably mounted on the extension shaft, the center of the extension shaft is provided with a first air inlet channel which penetrates the front and rear ends of the extension shaft, the first air inlet channel is communicated with the air inlet joint, and the extension shaft is further provided with a first oil inlet channel which is located on one side of the first air inlet channel and communicated with the oil inlet joint.

2. A composite rotary joint apparatus for a crankshaft as defined in claim 1, wherein: The extension shaft is sequentially provided with a first mounting table, a second mounting table and a third mounting table from left to right, the diameters of the first mounting table, the second mounting table and the third mounting table are gradually reduced, the oil inlet joint is sleeved on the second mounting table, the oil inlet joint is coaxially arranged with the second mounting table, a first bearing is arranged between the oil inlet joint and the second mounting table, the oil inlet joint is provided with an oil inlet nozzle which is communicated with the first oil inlet channel.

3. A composite rotary joint apparatus for a crankshaft as defined in claim 2, wherein: The air inlet joint is mounted on one side of the third mounting table, the air inlet joint is provided with a mounting shaft which is inserted into one side of the third mounting table and communicated with the first air inlet channel, and the air inlet joint is provided with an air inlet nozzle which is communicated with the first air inlet channel.

4. A composite rotary joint apparatus for a crankshaft as defined in claim 3 wherein: The oil inlet joint and the second mounting table are further provided with an oil seal.

5. A crankshaft characterized by: The crankshaft further comprises a clutch which is sleeved on the outer side of the crankshaft, and further comprises the composite rotary joint device for the crankshaft according to any one of claims 1-4, the composite rotary joint device is mounted on the right side of the crankshaft body, the first mounting table of the extension shaft is provided with a first recessed insertion slot, the right side of the crankshaft body is provided with a first outwardly protruding plug which is inserted into the first insertion slot, and an O-shaped gasket is arranged between the first plug and the first insertion slot; the center of the crankshaft body is provided with a second air inlet channel and a second oil inlet channel, the second air inlet channel is communicated with the clutch and the first air inlet channel, and the second oil inlet channel is communicated with the first oil inlet channel.

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