Hydraulic oil cylinder mechanism for reversing fan

Abstract

The utility model relates to a hydraulic oil cylinder mechanism for a reversing fan, and belongs to the technical field of reversing fans. The hydraulic oil cylinder mechanism comprises an oil cylinder base, an oil cylinder barrel and an oil cylinder piston, the oil cylinder barrel and the oil cylinder piston are assembled in an inner cavity of the oil cylinder base in a sealed mode, the shape of the oil cylinder barrel is of a regular polyhedron prism structure, and the shape of the inner cavity of the oil cylinder base is matched with the shape of the oil cylinder barrel. Fixing penetrating holes are formed in the side wall of the oil cylinder base and correspond to all the side faces of the oil cylinder barrel body, and grooves which are lengthened in the circumferential direction are formed in the positions, corresponding to the fixing penetrating holes of the oil cylinder base, of all the side faces of the oil cylinder barrel body. The hydraulic oil cylinder mechanism for the reversing fan is simple and practical in structure, convenient to assemble and maintain and good in stability.

Description

TECHNICAL FIELD

[0001] The utility model relates to a reversing fan technical field, concretely relates to a hydraulic cylinder mechanism for reversing fan. BACKGROUND

[0002] The reversing fan has very extensive application in the field of automobile, ship and the like, and plays a role of cooling the engine system during the working process, and at the same time, the function of cleaning the dust and sundries sucked periodically is also considered, and the function switching of inward blowing and cooling and outward blowing and cleaning is realized through fan reversing. The hydraulic cylinder as a power mechanism plays a role of driving the fan blade of the reversing fan to rotate and reverse. At present, the hydraulic cylinder mechanism for reversing fan used in the hydraulic reversing fan that has been listed and reported publicly in China has the common defects as follows: 1. The manufacturing and assembling process of the cylinder barrel and the cylinder piston is complex, and the production efficiency is low. 2. The cylinder barrel is unevenly stressed during the working of the cylinder, and the cylinder is prone to jam, oil leakage and pressure relief. 3. The connecting structure between the cylinder and the fixed shaft of the fan blade is complicated during the outward working of the cylinder, and the assembling difficulty is high, and the wear is prone to occur. SUMMARY

[0003] In order to solve the problems in the prior art, the utility model patent designs a hydraulic cylinder mechanism for reversing fan to solve the above problems existing in the prior art.

[0004] The utility model adopts the technical scheme that the hydraulic cylinder mechanism comprises a cylinder seat, a cylinder barrel and a cylinder piston, the cylinder barrel and the cylinder piston are sealingly assembled in the cavity of the cylinder seat, the shape of the cylinder barrel is a regular polyhedral prism structure, the shape of the cavity in the cylinder seat is matched with the shape of the cylinder barrel, the side wall of the cylinder seat is provided with a fixed through hole corresponding to each side of the cylinder barrel, and a circumferential elongated groove is formed in each side of the cylinder barrel corresponding to the position of the fixed through hole of the cylinder seat.

[0005] Further, the cylinder piston is coaxially assembled in the blind hole cavity in the cylinder barrel from one end, and the cylinder piston and the cylinder barrel are slidingly connected, the outer end of the cylinder piston is fixedly connected with the cylinder seat, and the inner end and the bottom of the cylinder barrel form a hydraulic oil cavity.

[0006] Further, the cylinder piston is provided with a stepped cavity along the axis, the inner end of the cavity is closed and provided with an oil passing hole at the center, an oil inlet shaft is rotatably connected in the cavity, and the oil inlet shaft is provided with a penetrating oil injection hole along the axis.

[0007] Further, the inner end and the middle part of the oil inlet shaft are sealingly rotatably connected with the cylinder piston through the bearing seat, and the outer end of the oil inlet shaft is penetrated out of the cylinder seat.

[0008] Further, the oil cylinder piston cavity inside end is fixedly connected with a sealing valve body, the oil inlet shaft oil injection hole channel inside end communicates with the oil cylinder piston inside end oil passing hole through the sealing valve body, and the outside end is connected with an oil injection connector.

[0009] Further, the sealing valve body is connected with the oil cylinder piston through a valve body sealing seat, the valve body sealing seat is fixedly connected with the oil cylinder piston cavity inside end, two sealing rubber rings are arranged between the valve body sealing seat outer periphery and the oil cylinder piston inner wall, the sealing valve body outside end is connected with the valve body sealing seat through an elastic cylindrical pin, and two sealing rubber rings are arranged between the sealing valve body outer periphery and the valve body sealing seat inner wall.

[0010] Further, a sealing compression spring is arranged between the sealing valve body inside end face and the valve body sealing seat end plate inside face.

[0011] Further, the oil inlet shaft inside end bearing seat is rotatably connected with the oil inlet shaft through two groups of deep groove ball bearings, and the oil inlet shaft middle part bearing seat is rotatably connected with the oil inlet shaft through a thrust ball bearing.

[0012] Further, a lip-shaped sealing rubber ring is arranged at the oil inlet shaft outside end and the oil cylinder seat connection position for sealing.

[0013] Further, a plurality of axial installation holes are uniformly distributed on the oil cylinder barrel end plate outside face in the circumferential direction, a reset spring is arranged in the installation hole, and the reset spring outside end is connected with the oil cylinder seat.

[0014] Compared with the prior art, the oil cylinder barrel adopts a regular polyhedral prism structure, each side can be connected with a fan blade fixed shaft, and synchronous reversing of multiple fan blades can be realized; the oil cylinder barrel side is provided with a circumferential elongated groove, the eccentric cylindrical pin of the groove and the fan blade fixed shaft is slidably connected, the linear movement of the oil cylinder barrel can be converted into the arc circumferential movement of the cylindrical pin, the fan blade fixed shaft is driven to rotate, the assembly structure is simple and practical, and the movement stability is good; the oil inlet shaft is rotatably connected in the oil cylinder piston axial cavity, and a sealing valve body is arranged at the oil inlet shaft inside end, so that the sealing effect of the entire hydraulic oil cylinder mechanism can be significantly improved, and the hydraulic oil leakage can be avoided; the sealing valve body is provided with an elastic cylindrical pin to realize positioning with the valve body sealing seat, relative rotation is avoided, a compression sealing spring is arranged, and rigid sealing between the sealing valve body and the oil inlet shaft inside end face when relative rotation occurs is realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a cross-sectional structure schematic view of the hydraulic oil cylinder mechanism for reversing fan.

[0016] Figure 2is the bottom view structural schematic diagram of the hydraulic oil cylinder.

[0017] Figure 3 is the top view structural schematic diagram of the hydraulic oil cylinder.

[0018] Figure 4 is the front view structural schematic diagram of the hydraulic oil cylinder.

[0019] Figure 5 is Figure 2 the B-B sectional view structural schematic diagram of the hydraulic oil cylinder.

[0020] Figure 6 is Figure 4 the A-A sectional view structural schematic diagram of the hydraulic oil cylinder.

[0021] In the figure, 100 - oil cylinder seat, 1 - oil cylinder barrel, 2 - oil cylinder piston, 3 - oil inlet shaft, 4 - bearing seat, 5 - bearing outer spacer, 6 - bearing inner spacer, 7 - valve body sealing seat, 8 - sealing valve body, 9 - thrust ball bearing, 10 - M5 conical end set screw, 11 - deep groove ball bearing, 12 - Y type rubber sealing ring, 13 - O type rubber sealing ring A, 14 - O type rubber sealing ring B, 15 - sealing compression spring, 16 - elastic cylindrical pin, 17 - return spring, 18 - mounting hole, 19 - mounting groove, 20 - lip rubber sealing ring. DETAILED DESCRIPTION

[0022] The utility model will be further explained in combination with the drawings and specific embodiments. The technical scheme of the embodiment of the utility model is clearly and completely described, and the described embodiment is only a part of the embodiment of the present application, rather than all. Based on the embodiment in the present application, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the present application.

[0023] As Figure 1 , 2, 3, 5, 6, the utility model discloses a kind of hydraulic cylinder mechanism for reversing fan, and a kind of embodiment of the utility model patent is designed in the present embodiment, and hydraulic cylinder mechanism includes cylinder seat 100, cylinder barrel 1 and cylinder piston 2, cylinder barrel 1 and cylinder piston 2 constitute hydraulic cylinder sealing assembly in the internal cavity of cylinder seat 100, the shape of cylinder barrel 1 is regular hexahedron prism structure, the shape of the cavity in the inside of cylinder seat 100 is adapted to the shape of cylinder barrel 1, and cylinder barrel 1 can axially slide in the internal cavity of cylinder seat 100. Fixed perforation is opened along the radial direction on the side wall of cylinder seat 100 corresponding to each side of cylinder barrel 1, and each side of cylinder barrel 1 is opened with the position of the fixed perforation of cylinder seat 100 with the circumferential elongated installation groove 19. Blind hole cavity is opened in the inside of cylinder barrel 1, six axial mounting holes 18 are uniformly distributed and opened on the outside of the top plate along the circumference, and the same reset spring 17 is respectively arranged in six mounting holes 18, and the outside end of reset spring 17 is connected with the inside top surface of cylinder seat 100. Cylinder piston 2 is coaxially assembled in the blind hole cavity in the inside of cylinder barrel 1 from one end, and the two are slidingly connected, and an annular groove is opened on the outer wall of cylinder piston 2, and Y-shaped rubber sealing ring 12 is embedded in the annular groove. The bottom surface of cylinder seat 100 is fixedly connected with the outside end of cylinder piston 2 through a plurality of bolts, and the inside end and the top plate of cylinder barrel 1 constitute a hydraulic oil cavity, and the cylinder barrel 1 can be relatively moved after injecting hydraulic oil, and the cylinder barrel 1 can be reset under the pushing of reset spring 17 after the hydraulic oil is discharged.

[0024] Cylinder piston 2 is opened with stepped cavity along the axis, the inside end of the cavity is closed and is opened with oil passing hole at the center, oil inlet shaft 3 is rotatably connected in the cavity, and oil inlet shaft 3 is opened with through oil injection hole along the axis. The inside end of oil inlet shaft 3 is rotatably connected with cylinder piston 2 through bearing seat 4, bearing seat 4 is fixedly connected with the cavity of cylinder piston 2 in interference fit, and is positioned by two groups of M5 taper end set screws arranged symmetrically. Two deep groove ball bearings 7 are rotatably connected in the inside of bearing seat 4 with oil inlet shaft 3, and bearing outer spacer ring 5 and bearing inner spacer ring 6 are arranged. The middle part of oil inlet shaft 3 is rotatably and airtightly connected with the opening at the bottom end of the cavity of cylinder piston 2 through a group of thrust ball bearings 9. The outside end of oil inlet shaft 2 is outwardly penetrated from the bottom center opening of cylinder seat 100, and lip-shaped sealing rubber ring 20 is arranged at the connection of cylinder seat 100 to seal.

[0025] The inner end of the inner cavity of the oil cylinder piston 2 is provided with a sealing valve body 8, the inner end of the oil inlet channel of the oil inlet shaft 3 is communicated with the oil passing hole of the inner end of the oil cylinder piston 2 through the sealing valve body 8, and the outer end is connected with an oil inlet joint. The sealing valve body 8 is connected with the oil cylinder piston 2 through a valve body sealing seat 7, the valve body sealing seat 7 is fixedly connected with the inner end of the cavity of the oil cylinder piston 2 in an interference fit, and the outer periphery is provided with two O-shaped rubber sealing rings B14 to seal with the inner wall of the oil cylinder piston 2. The valve body sealing seat 8 is assembled in the axial cavity of the valve body sealing seat 7, the outer end surface thereof is butted with the inner end surface of the oil inlet shaft 3, and is connected with the valve body sealing seat 7 through two symmetrically arranged elastic cylindrical pins 16, the elastic cylindrical pins 16 can prevent the sealing valve body 8 from rotating relative to the valve body sealing seat 7, a sealing compression spring 15 is arranged between the inner end and the end plate of the valve body sealing seat 7, the sealing compression spring 15 realizes rigid sealing between the sealing valve body 8 and the inner end surface of the oil inlet shaft 3 when rotating relative to each other, and two O-shaped sealing rubber rings A13 are arranged between the outer periphery and the inner wall of the valve body sealing seat 7 to realize static sealing.

[0026] The utility model discloses a hydraulic cylinder mechanism for reversing fan application, the fan fixed axle of six groups of fan blades of reversing fan is connected through bearing and fixed perforation on the oil cylinder seat 100 rotation, the eccentric cylindrical pin on the fan fixed axle end face shaft shoulder inserts and slides the connection in the installation groove 19 on the side of oil cylinder barrel 1. When working, the external hydraulic oil is by the oil inlet shaft 3 and flows through the sealing valve body 8, and then fills the cavity between the inside end of oil cylinder piston 2 and oil cylinder barrel 1, when the oil pressure in the cavity reaches the defined working pressure, the oil cylinder barrel 1 just overcomes the elastic force of reset spring 17 and moves to the top of oil cylinder seat 100, when the oil cylinder barrel 1 moves, axial positioning and guiding rely on oil cylinder piston 2, radial rely on the external regular hexagonal prism surface of oil cylinder barrel 1 and the internal regular hexagonal prism surface of oil cylinder seat 100 and limit, make the oil cylinder barrel 1 not rotate in the whole stroke, the eccentric cylindrical pin on six fan fixed axles is vertically inserted in six identical installation grooves 19 on the regular hexagonal prism surface of oil cylinder barrel 1 respectively, the oil cylinder barrel 1 pushes the six eccentric cylindrical pins together with the fan fixed axle to do circular arc rotation around the shaft center line when linear motion, the rotation of six fan fixed axles drives the synchronous rotation of the fan blades assembled on each fan fixed axle, the smooth wear copper alloy sleeve is respectively sleeved on six eccentric cylindrical pins, reduces the friction between the cylindrical pin and the inner surface of the installation groove 19 on the six prism surface of oil cylinder barrel 1, and the sliding of the cylindrical pin is facilitated. The sealing compression spring 15 compresses and seals the contact surface of sealing valve body 8 and oil inlet shaft 3, so that the contact surface of sealing valve body 8 and oil inlet shaft 3 does not leak oil when relative rotation, the two elastic cylindrical pins 16 fixed in the valve body sealing seat 7 prevent the relative rotation of sealing valve body 8 and valve body sealing seat 7. The cavity between sealing valve body 8 and the valve body sealing seat 7 that limits it is sealed by two O-shaped rubber sealing rings A13, and the cavity between valve body sealing seat 7 and the oil cylinder piston 2 that limits it is sealed by two O-shaped rubber sealing rings B14, so that the hydraulic oil entering the upper cavity of sealing valve body 8 does not backflow, the two deep groove ball bearings 11 and bearing seat 4 position and limit the oil inlet shaft 3 in the oil cylinder piston 2, the thrust ball bearing 9 positions and limits the oil inlet shaft 3 in the oil cylinder seat 100, and the Y-shaped rubber sealing ring 12 seals the cavity between the oil cylinder barrel 1 and the oil cylinder piston 2, so that the whole mechanism maintains good sealing property and stability when working.

[0027] The above is only the preferred embodiment of the present application, and cannot limit the implementation range of the present application, that is, any simple equivalent change and modification made according to the claims and the description of the present application still belongs to the scope of the present application.

Claims

1. A hydraulic cylinder mechanism for reversing a fan, characterized by, The hydraulic cylinder mechanism includes a cylinder seat, a cylinder body, and a cylinder piston. The cylinder body and the cylinder piston are sealed and assembled in the cavity of the cylinder seat. The cylinder body has a regular polyhedral prism structure. The shape of the cavity inside the cylinder seat is adapted to the shape of the cylinder body. Each side of the cylinder seat has a fixing hole corresponding to each side of the cylinder body. Each side of the cylinder body has a circumferentially elongated groove corresponding to the fixing hole of the cylinder seat.

2. The hydraulic cylinder mechanism for reversing the fan according to claim 1, wherein The piston of the hydraulic cylinder is coaxially assembled in a blind cavity inside the cylinder body from one end, and the two are slidably connected. The outer end of the piston is fixedly connected to the cylinder seat, and the inner end forms a hydraulic oil chamber with the bottom of the cylinder body.

3. The hydraulic cylinder mechanism for reversing the fan according to claim 2, wherein The piston of the oil cylinder has a stepped cavity along its axis. The inner end of the cavity is closed and has an oil passage hole at the center. An oil inlet shaft is rotatably connected to the cavity, and the oil inlet shaft has a through oil injection channel along its axis.

4. The hydraulic cylinder mechanism for reversing the fan according to claim 3, wherein The inner end and middle part of the oil inlet shaft are respectively connected to the cylinder piston in a sealed rotational manner through bearing seats, and the outer end protrudes from the cylinder seat.

5. A hydraulic cylinder mechanism for reversing a fan according to claim 4, wherein The inner end of the cylinder piston cavity is connected to a sealing valve body, and the inner end of the oil inlet shaft's oil injection channel is connected to the oil passage at the inner end of the cylinder piston through the sealing valve body, while the outer end is connected to an oil injection connector.

6. A hydraulic cylinder mechanism for reversing a fan according to claim 5, wherein The sealing valve body is connected to the cylinder piston via a valve body sealing seat. The valve body sealing seat is fixedly connected to the inner end of the cavity of the cylinder piston. Two sealing rubber rings are provided between the outer periphery of the valve body sealing seat and the inner wall of the cylinder piston. The outer end of the sealing valve body is connected to the valve body sealing seat via two symmetrically arranged elastic cylindrical pins. Two sealing rubber rings are also provided between the outer periphery of the sealing valve body and the inner wall of the valve body sealing seat.

7. A hydraulic cylinder mechanism for reversing a fan according to claim 6, wherein A sealing compression spring is provided between the inner end face of the sealing valve body and the inner side of the end plate of the valve body sealing seat.

8. A hydraulic cylinder mechanism for reversing a fan according to claim 7, wherein The bearing housing at the inner end of the oil inlet shaft is rotatably connected to the oil inlet shaft via a deep groove ball bearing, and the bearing housing in the middle of the oil inlet shaft is rotatably connected to the oil inlet shaft via a thrust ball bearing.

9. A hydraulic cylinder mechanism for reversing a fan according to claim 8, wherein A lip-shaped sealing ring is provided at the connection between the outer end of the oil inlet shaft and the cylinder seat for sealing.

10. The hydraulic cylinder mechanism for reversing fan according to claim 2, characterized by Multiple axial mounting holes are evenly distributed circumferentially on the outer side of the end plate of the cylinder body. A return spring is installed in the mounting hole, and the outer end of the return spring is connected to the cylinder seat.

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