CN214699057U

CN214699057U - Gear swing oil cylinder

Info

Publication number: CN214699057U
Application number: CN202120310741.5U
Authority: CN
Inventors: 汤关云; 陈冬根; 潘肖列
Original assignee: Zhejiang Tiangong Hydraulic Machinery Co ltd
Current assignee: Zhejiang Tiangong Hydraulic Machinery Co ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-11-12
Anticipated expiration: 2031-02-03

Abstract

The utility model relates to a gear swing hydro-cylinder, including the cylinder, inseparable sliding connection is in two pistons of cylinder inner wall, locate the piston rod between two pistons, locate the cylinder and convert the linear motion of piston rod into rotary motion and carry out the shifter of exporting, can dismantle the cylinder cap of connecting in cylinder both ends opening and supplying hydraulic oil to enter into in order to drive the piston removal, the diameter of piston rod equals the diameter of piston, cylinder inner wall and piston rod laminating department run through and have seted up the oil filler point, it is equally big with the piston diameter to possess the diameter of piston rod, so that the piston rod is difficult for appearing deforming under long-time operating condition, the holistic life's of hydro-cylinder effect has been promoted.

Description

Gear swing oil cylinder

Technical Field

The application relates to the field of oil cylinders, in particular to a gear swing oil cylinder.

Background

The gear swing oil cylinder converts linear motion of a piston rod into rotary motion to output, racks are arranged on the surfaces of the piston rods inside the gear swing oil cylinder, and then the racks are meshed with gears at one end of a corresponding gear shaft to realize motion conversion.

The general diameter of the piston rod of the rack arranged in the existing gear swing oil cylinder is smaller than the inner diameter of the cylinder barrel, so that only the pistons at two ends of the piston rod are in close contact with the inner wall of the cylinder barrel.

With respect to the related art in the above, the inventors consider that there is a drawback that the piston rod is easily deformed in a long-time operating state.

SUMMERY OF THE UTILITY MODEL

In order to reduce the possibility that the piston rod is deformed under the long-time working state, the gear swing oil cylinder is provided.

The application provides a gear swing hydro-cylinder adopts following technical scheme:

the utility model provides a gear swing hydro-cylinder, includes cylinder, inseparable sliding connection in two pistons of cylinder inner wall, locate the piston rod between two pistons, locate the cylinder and convert the linear motion of piston rod into rotary motion and carry out the shifter of exporting, can dismantle connect in cylinder both ends opening and supply hydraulic oil to enter into the cylinder in order to drive the cylinder cap that the piston removed, the diameter of piston rod equals the diameter of piston, and cylinder inner wall and piston rod laminating department run through and have seted up the oil filler point.

Through adopting above-mentioned technical scheme for when two pistons drive the piston rod that is located two pistons middle and remove, the piston rod is difficult for appearing deformation, makes the piston rod can normal motion, simultaneously at the piston rod during operation, pours into high pressure oil into through the oil filler point into, makes to have one deck high pressure oil film between piston rod and the cylinder inner wall, makes the piston rod difficult when removing and has great wearing and tearing between the cylinder inner wall, helps prolonging the holistic life of hydro-cylinder.

Optionally, the part of the inner wall of the oil filler hole close to the inside of the cylinder barrel is arranged in an inclined plane, and the diameter of the inclined plane of the oil filler hole close to the inside of the cylinder barrel is smaller than the diameter of the inclined plane of the oil filler hole far away from the inside of the cylinder barrel.

Through adopting above-mentioned technical scheme for enter into the inside high-pressure oil of cylinder through the oil filler point and can follow the beginning and go into a less passageway in a great passageway, then make and enter into the high-pressure oil between cylinder and the piston rod through the oil filler point and be difficult too big, also can promote the oil pressure that the oil filler point is located cylinder inner wall opening part simultaneously, so that high-pressure oil enters into in the cylinder more easily.

Optionally, the conversion mechanism includes a gear shaft chamber integrally formed in the cylinder and communicated with the inside of the cylinder, a shaft chamber plate detachably connected to an opening of the gear shaft chamber in a sealing manner, a rod rack arranged on the piston rod, a gear shaft rotatably connected to the shaft chamber plate in a sealing manner, a conversion gear coaxially and fixedly connected to one end of the gear shaft positioned in the gear shaft chamber and meshed with the rod rack, and an output shaft arranged at one end of the gear shaft exposed out of the gear shaft chamber.

By adopting the technical scheme, the piston rod drives the rod rack to move, then the rod rack drives the conversion gear to rotate, the conversion gear drives the gear shaft to rotate, and the gear shaft drives the output shaft to rotate so as to realize that the linear motion of the piston rod is converted into the rotary motion of the output shaft.

Optionally, the piston rod is provided with a piston rod groove for the rod rack to be attached and placed, two ends of the rod rack are fixedly connected with screw blocks, and the screw blocks penetrate through rack screws in threaded connection with the inner wall of the piston rod groove.

Through adopting above-mentioned technical scheme, with rack screw-off then can change the pole rack for use longer time back at the pole rack, can change the pole rack, conversion gear and gear shaft also can be through dismantling the change with axle chamber board simultaneously.

Optionally, the piston rod groove is provided with a rack slot, and the rod rack is inserted into the rack slot along the radial direction of the piston rod.

Through adopting above-mentioned technical scheme, be convenient for fix a position the mounted position of pole rack, also be convenient for simultaneously with rack screw corresponding piston rod inslot wall's established position screw in.

Optionally, the output shaft is towards the several inserted bars of the side fixedly connected with of gear shaft, and the gear shaft is offered towards the side of inserted bar and is supplied inserted bar male jack, and output shaft fixedly connected with can laminate in the axle piece of gear shaft, and several threaded connection is worn to be equipped with in the axle piece screw of gear shaft by the axle piece.

Through adopting above-mentioned technical scheme, can correspond the dismantlement with the output shaft to satisfy different use scenes, enlarge the holistic application range of hydro-cylinder.

Optionally, the cylinder cap includes laminating in the outer piece of jar of cylinder terminal surface, integrated into one piece in the outer piece of jar and inseparable butt in the jar inner block of cylinder inner wall, wear to locate the outer piece of jar and threaded connection in the several cylinder cap screw of output shaft, and the outer piece of jar and the interior piece of jar run through and have seted up the oil inlet.

Through adopting above-mentioned technical scheme, the piece cooperatees tightly in the cylinder outside jar piece and the jar in the jar for hydraulic oil is difficult for leaking outward from the cylinder opening part, also makes the piston can give the difficult condition that takes place to reduce of pressure of piston rod.

Optionally, the outer wall integrated into one piece that the oil filler point was seted up to the cylinder has the thickening piece, and the oil filler point runs through in the thickening piece.

Through adopting above-mentioned technical scheme for the cylinder is located difficult emergence deformation of oil filler hole department, helps promoting the whole difficult deformation of cylinder, increase of service life.

In summary, the present application includes at least one of the following benefits:

when the two pistons drive the piston rod positioned between the two pistons to move, the piston rod is not easy to deform, so that the piston rod can normally move, and meanwhile, when the piston rod works, high-pressure oil is injected through the oil injection hole, so that a layer of high-pressure oil film is formed between the piston rod and the inner wall of the cylinder barrel, the piston rod is not easy to wear with the inner wall of the cylinder barrel when moving, and the service life of the whole oil cylinder is prolonged;

the cylinder inner block and the cylinder outer block are matched and tightly abutted against the cylinder barrel, so that hydraulic oil is not easy to leak from the opening of the cylinder barrel, and the pressure given to the piston rod by the piston is not easy to reduce.

Drawings

Fig. 1 is a main body structural view of the present application;

FIG. 2 is a schematic structural view with portions broken away to show the oil injection holes, one end of the cylinder barrel and the corresponding cylinder head, with the shaft chamber plate pierced by the gear shaft removed to show the interior of the gear shaft chamber;

fig. 3 is an enlarged view of a in fig. 2.

Description of reference numerals: 1. a cylinder barrel; 11. a cylinder head screw; 12. a gear shaft chamber; 13. a shaft chamber plate; 14. an oil inlet; 2. a piston; 21. a rack screw; 22. a rack slot; 23. inserting a rod; 24. a jack; 25. a shaft block; 26. a shaft block screw; 27. thickening blocks; 28. an outer cylinder block; 29. a cylinder inner block; 3. a piston rod; 31. a switching mechanism; 32. a cylinder cover; 33. an oil filler hole; 34. a rod rack; 35. a gear shaft; 36. a switching gear; 37. an output shaft; 38. a piston rod groove; 39. and a screw block.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses gear swing hydro-cylinder, refer to fig. 1 and fig. 2, including both ends open-ended cylinder 1, the equal coaxial arrangement in cylinder 1 both ends opening part has the cylinder cap 32 that supplies hydraulic oil to enter into in cylinder 1 in order to drive piston 2 along the removal of cylinder 1 axis direction, 1 circumference inner wall of cylinder 1 has two pistons 2 along the inseparable sliding connection of cylinder 1 axis direction, 2 circumference surfaces of piston set up the sealing washer, coaxial fixedly connected with piston rod 3 between two pistons 2, the diameter of piston rod 3 is unanimous with the diameter of piston 2, cylinder 1 is installed and is carried out the shifter 31 of exporting with the linear motion conversion of piston rod 3 for rotary motion.

Referring to fig. 1 and 2, each cylinder cap 32 is including the outer piece 28 of the jar of laminating in 1 terminal surface of cylinder barrel, the outer piece 28 diameter of jar is the same with 1 circumference outer wall diameter of cylinder barrel, the outer piece 28 of jar is towards the coaxial fixedly connected with jar inner block 29 of the side of cylinder barrel 1, the close laminating of the circumference outer wall of the jar inner block 29 fits the circumference inner wall of cylinder barrel 1, the outer wall department of the circumference of jar inner block 29 sets up the sealing washer, the side that the outer piece 28 of jar deviates from the jar inner block 29 evenly wears to be equipped with several cylinder cap screw 11 around the cylinder barrel 1 axis, cylinder cap screw 11 threaded connection is in the terminal surface of cylinder barrel 1, same oil inlet 14 has been seted up with the outer piece 28 of the jar that is connected to the jar inner block 29 coaxial.

Referring to fig. 2 and 3, the switching mechanism 31 includes the rod rack 34 installed inside the cylinder barrel 1, the length direction of the rod rack 34 is parallel to the length direction of the cylinder barrel 1, the piston rod groove 38 has been seted up on the outer wall of the circumference of the piston rod 3, the length direction of the piston rod groove 38 is parallel to the length direction of the piston rod 3, the rack slot 22 has been seted up on the horizontal inner wall of the piston rod groove 38 length direction, the rack slot 22 has the rod rack 34 along the radial sliding connection of the piston rod 3, the length direction of the rod rack 34 is parallel to the length direction of the piston rod 3, both ends of the rod rack 34 in the length direction are fixedly connected with the screw blocks 39, the two screw blocks 39 respectively abut against the two opposite inner walls of the piston rod groove 38, and each screw block 39 is provided with the rack screw 21 in threaded connection with the inner wall of the piston rod groove 38.

Referring to fig. 1 and 2, a gear shaft chamber 12 is integrally formed at the position of the cylinder barrel 1 away from the circumferential outer wall of the thickening block 27, two opposite side surfaces of the gear shaft chamber 12 are provided with openings, the connecting line direction between two opposite openings of the gear shaft chamber 12 is perpendicular to the axial direction of the cylinder barrel 1, the connecting openings of the gear shaft chamber 12 are tightly and detachably connected with shaft chamber plates 13 through screws, a gear shaft 35 is rotatably connected between the two shaft chamber plates 13, the gear shaft 35 is coaxially and fixedly connected with a conversion gear 36 which is positioned in the gear shaft chamber 12 and meshed with a rod rack 34, one end of the gear shaft 35 is penetrated and hermetically and rotatably connected with one shaft chamber plate 13, as shown in fig. 3, a plurality of insertion holes 24 are uniformly formed on the end surface of one end of the gear shaft chamber 12 exposed by the gear shaft 35 around the axial line of the gear shaft 35, an output shaft 37 is coaxially abutted to the end surface of the gear shaft 35 where the insertion holes 24 are formed, the end surface of the output shaft 37 is fixedly connected with a plurality of insertion rods 23, the length direction of the inserted rods 23 is parallel to the axial direction of the gear shaft 35, each inserted rod 23 is inserted into each insertion hole 24 in a one-to-one correspondence mode, the outer wall of the circumference of the output shaft 37 is fixedly connected with a shaft block 25 in a coaxial mode, the shaft block 25 is attached to the end face, provided with the insertion holes 24, of the gear shaft 35, and a plurality of shaft block screws 26 are uniformly arranged on the shaft block 25 in a penetrating mode around the axial line of the gear shaft 35 and connected to the output shaft 37 in a threaded mode.

Referring to fig. 1 and 2, cylinder 1 circumference outer wall intermediate point department integrated into one piece has thickening piece 27, and thickening piece 27 runs through to set up and communicates to the inside oil filler point 33 of cylinder 1, and oil filler point 33 length direction is on a parallel with cylinder 1 radially, and oil filler point 33 is close to the inside one end opening inner wall of cylinder 1 and is the inclined plane setting, and one side diameter that thickening piece 27 was kept away from on the oil filler point 33 inclined plane is less.

The gear swing oil cylinder of the embodiment of the application is implemented according to the principle that: hydraulic oil enters the cylinder barrel 1 from the oil inlets 14, the pressure intensity of the hydraulic oil entering through the two oil inlets 14 is different, so that the piston rod 3 moves along the length direction of the piston rod 3, high-pressure oil is injected into the oil injection hole 33 while the piston rod 3 moves, the piston rod 3 drives the rod rack 34 to move, the rod rack 34 drives the conversion gear 36 to rotate, the gear shaft 35 rotates around the axis of the gear shaft, and finally the output shaft 37 rotates around the axis of the gear shaft.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a gear swing hydro-cylinder, includes cylinder (1), two pistons (2) of inseparable sliding connection in cylinder (1) inner wall, locate piston rod (3) between two pistons (2), locate cylinder (1) and convert the linear motion of piston rod (3) into rotary motion and carry out shifter (31) of exporting, can dismantle connect in cylinder (1) both ends opening and supply hydraulic oil to enter into cylinder (1) in order to drive cylinder cap (32) that piston (2) removed, its characterized in that: the diameter of the piston rod (3) is equal to that of the piston (2), and an oil filling hole (33) is formed in the joint of the inner wall of the cylinder barrel (1) and the piston rod (3) in a penetrating mode.

2. The gear swing cylinder according to claim 1, characterized in that: the part of the inner wall of the oil filler hole (33) close to the inner part of the cylinder barrel (1) is arranged in an inclined plane, and the diameter of the inclined plane of the oil filler hole (33) close to the inner part of the cylinder barrel (1) is smaller than the diameter of the inclined plane of the oil filler hole (33) far away from the inner part of the cylinder barrel (1).

3. The gear swing cylinder according to claim 1, characterized in that: the conversion mechanism (31) comprises a gear shaft chamber (12) which is integrally formed in the cylinder barrel (1) and communicated with the inside of the cylinder barrel (1), a shaft chamber plate (13) which is connected to an opening of the gear shaft chamber (12) in a sealing and detachable mode, a rod rack (34) arranged on the piston rod (3), a gear shaft (35) which is connected to the shaft chamber plate (13) in a sealing and rotating mode, a conversion gear (36) which is coaxially and fixedly connected to one end of the gear shaft (35) in the gear shaft chamber (12) and meshed with the rod rack (34), and an output shaft (37) which is arranged at one end of the gear shaft (35) exposed out of the gear shaft chamber (12).

4. The gear swing cylinder according to claim 3, characterized in that: piston rod (3) are seted up and are supplied pole rack (34) laminating piston rod groove (38) of putting into, pole rack (34) both ends fixedly connected with screw block (39), and screw block (39) are worn to be equipped with rack screw (21) of threaded connection in piston rod groove (38) inner wall.

5. The gear swing cylinder according to claim 4, characterized in that: the piston rod groove (38) is provided with a rack slot (22), and the rod rack (34) is inserted into the rack slot (22) along the radial direction of the piston rod (3).

6. The gear swing cylinder according to claim 3, characterized in that: the side face of the output shaft (37) towards the gear shaft (35) is fixedly connected with a plurality of insertion rods (23), the side face of the gear shaft (35) towards the insertion rods (23) is provided with insertion holes (24) for the insertion rods (23) to insert, the output shaft (37) is fixedly connected with a shaft block (25) capable of being attached to the gear shaft (35), and the shaft block (25) is provided with a plurality of shaft block screws (26) in threaded connection with the gear shaft (35) in a penetrating mode.

7. The gear swing cylinder according to claim 1, characterized in that: the cylinder cover (32) comprises an outer cylinder block (28) attached to the end face of the cylinder barrel (1), an inner cylinder block (29) which is integrally formed on the outer cylinder block (28) and tightly abutted to the inner wall of the cylinder barrel (1), and a plurality of cylinder cover screws (11) which penetrate through the outer cylinder block (28) and are in threaded connection with the output shaft (37), wherein the outer cylinder block (28) and the inner cylinder block (29) are provided with oil inlets (14) in a penetrating mode.

8. The gear swing cylinder according to claim 1, characterized in that: the outer wall integrated into one piece that oil filler point (33) were seted up in cylinder (1) has thickening piece (27), and oil filler point (33) run through in thickening piece (27).