CN112360839A - Double-stroke limiting hydraulic cylinder - Google Patents

Abstract

The invention relates to the technical field of hydraulic cylinders, in particular to a double-stroke limiting hydraulic cylinder, which comprises a hydraulic cylinder, wherein a moving mechanism is fixedly connected inside the hydraulic cylinder, a sealing mechanism is arranged at an opening of the hydraulic cylinder, a round block is pushed to move by hydraulic oil, a push rod is driven to move when the round block moves, a fixed rod is driven to move when the push rod moves, a U-shaped plate is driven to move when the fixed rod moves, the U-shaped plate drives a rotating wheel to move through a rotating shaft, so that the U-shaped plate is contacted with the sealing block, the first pressure regulating pipe is prevented from being blocked by the round block from moving excessively, the round block is prevented from being damaged by collision with the sealing block, the second sleeve is driven to be inserted into the first sleeve by the round block driving the fixed round rod to be inserted into the second sleeve, the round block is further supported by the first sleeve, the second pressure regulating pipe is prevented from being blocked, prevent the hydraulic cylinder from being blocked and damaged and being incapable of being used normally.

Description

Double-stroke limiting hydraulic cylinder

Technical Field

The invention relates to the technical field of hydraulic cylinders, in particular to a double-stroke limiting hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion, has simple structure and reliable work, can omit a speed reducer when the hydraulic cylinder is used for realizing the reciprocating motion, has no transmission clearance and moves stably, thereby being widely applied to hydraulic systems of various machines, and the output force of the hydraulic cylinder is in direct proportion to the effective area of a piston and the pressure difference between the two sides of the piston.

The inside removal push pedal of hydro-cylinder can reciprocate when the operation of current pneumatic cylinder moves, and then can strike hydraulic cylinder body both ends around, probably leads to hydraulic cylinder body's both ends to take place to warp after long-time the use, and then probably leads to removing the push pedal and removes the pressure regulating pipe that excessively plugs up both ends around the pneumatic cylinder, probably leads to the hydraulic pressure pipe to break and takes place to damage when serious, and then probably leads to the unable normal use of pneumatic cylinder.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a double-stroke limiting hydraulic cylinder.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a spacing pneumatic cylinder of double-stroke, includes a hydraulic pressure section of thick bamboo, the inside fixedly connected with moving mechanism of a hydraulic pressure section of thick bamboo, the opening part of a hydraulic pressure section of thick bamboo is provided with sealing mechanism, moving mechanism's be provided with stabilizing mean on the surface, fixedly connected with booster mechanism on the lower surface of a hydraulic pressure section of thick bamboo, moving mechanism is provided with stop gear on the surface, a hydraulic pressure section of thick bamboo is close to fixed intercommunication on the open-ended one end outer wall and has first pressure regulating pipe, fixed intercommunication has the second pressure regulating pipe on the other end outer wall of a hydraulic pressure section.

Specifically, moving mechanism includes the circle piece, the circle piece activity cup joints inside hydraulic pressure section of thick bamboo, the ring channel has been seted up on the excircle lateral wall of circle piece, the inside joint of ring channel has the sealing ring, fixedly connected with push rod on one side lateral wall of circle piece.

Specifically, sealing mechanism is including sealed piece, sealed piece joint is at the opening part of hydraulic pressure section of thick bamboo, fixed the cup jointing has fixed the lantern ring on the outer wall of sealed piece, two through-holes have been seted up to the symmetry on the surface of fixed lantern ring, two the inside of through-hole is all pegged graft and is had the bolt, two the inside of bolt difference threaded connection at two screws, two the screw symmetry is seted up on the opening outer wall of hydraulic pressure section of thick bamboo, ring groove has been seted up on the excircle lateral wall of sealed piece, ring groove's inside joint has the sealing washer, the jack has been seted up to the center department of sealed piece.

Specifically, stabilizing mean includes the dead lever, two dead lever symmetry fixed connection is on the surface of push rod, two the equal fixedly connected with U-shaped board of the other end of dead lever, two the equal fixedly connected with pivot in inside of U-shaped board, two the pivot all rotate on the surface and be connected with the runner.

Concretely, booster mechanism includes the fixed block, fixed block fixed connection is on the lower surface of a hydraulic pressure section of thick bamboo, the circular slot has been seted up to the inside of fixed block, fixedly connected with motor on the outer wall of fixed block, the output fixedly connected with threaded rod of motor, the threaded rod passes through waterproof bearing and rotates the connection on the surface at the fixed block, threaded rod threaded connection is in threaded hole portion, the screw hole is seted up on the inner wall of ejector pad, the ejector pad cup joints in the circular slot portion, two sliding clamping groove, two have been seted up to the symmetry on the excircle lateral wall of ejector pad the equal joint in sliding clamping groove's inside has the slip card strip, two the slip card strip is symmetry fixed connection respectively on the inner wall of circular slot, the fixed intercommunication of one end of circular slot has first pressure boost pipe, the fixed intercommunication in other end of circular slot has the second pressure.

Specifically, stop gear includes first sleeve, first sleeve fixed connection is on the lateral wall of one side that the push rod was kept away from to the disk, two first spacing grooves have been seted up to the symmetry on the first telescopic inner wall, two the equal joint in inside of first spacing groove has the first stopper of assorted, two first stopper fixed connection is on the telescopic second surface of second, two second spacing grooves have been seted up to the symmetry on the telescopic inner wall of second, two the equal joint in inside of second spacing groove has assorted second stopper, two second stopper fixed connection is on the fixed round bar's surface, the other end fixed connection of fixed round bar is inside the hydraulic cylinder.

Specifically, one end of the first pressure pipe, which is far away from the fixed block, is fixedly communicated with the side wall of one end of the hydraulic cylinder, which is close to the opening, and one end of the second pressure pipe, which is far away from the fixed block, is fixedly communicated with the side wall of one end of the hydraulic cylinder, which is far away from the opening.

Specifically, the length of the first sleeve is longer than the distance from the second pressure regulating pipe to the interior of the hydraulic cylinder, and the length of the first sleeve is the same as that of the second sleeve.

The invention has the beneficial effects that:

(1) the invention relates to a double-stroke limiting hydraulic cylinder, which is characterized in that hydraulic oil is introduced into two ends of the interior of a hydraulic cylinder through a first pressure regulating pipe and a second pressure regulating pipe, the round block is pushed to move by hydraulic oil, the push rod is driven to move when the round block moves, the fixed rod is driven to move when the push rod moves, the U-shaped plate is driven to move when the fixed rod moves, the rotating wheel is driven to move by the U-shaped plate through the rotating shaft, the U-shaped plate is contacted with the sealing block, the first pressure regulating pipe is prevented from being blocked by excessive movement of the round block, the round block is prevented from being damaged by collision with the sealing block, the round block drives the fixed round rod to be inserted into the second sleeve to drive the second sleeve to be inserted into the first sleeve, and then make between the disk and the hydraulic cylinder inside support through first sleeve, prevent that the disk from plugging up the second pressure regulating pipe, prevent that the disk from taking place the striking with the inside of hydraulic cylinder and causing the damage, prevent that the pneumatic cylinder from taking place to block up and impaired unable normal use.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a double-stroke limiting hydraulic cylinder provided by the invention;

FIG. 2 is a sectional view of the double-stroke limiting hydraulic cylinder taken along the direction A-A;

FIG. 3 is an enlarged view of a portion C in FIG. 1 of a double-stroke limiting hydraulic cylinder provided by the present invention;

FIG. 4 is an enlarged view of a portion B of the double-stroke limiting hydraulic cylinder shown in FIG. 1 according to the present invention;

FIG. 5 is a schematic structural view of a double-stroke limiting hydraulic cylinder limiting mechanism provided by the invention;

FIG. 6 is a schematic structural view of a double-stroke limiting hydraulic cylinder stabilizing mechanism provided by the invention;

fig. 7 is a schematic structural diagram of a double-stroke limit hydraulic cylinder moving mechanism provided by the invention.

In the figure: 1. a hydraulic cylinder; 2. a moving mechanism; 21. a round block; 22. an annular groove; 23. a seal ring; 24. a push rod; 3. a sealing mechanism; 31. a sealing block; 32. a fixed collar; 33. a through hole; 34. a bolt; 35. a screw hole; 36. an annular neck; 37. a seal ring; 38. a jack; 4. a stabilizing mechanism; 41. fixing the rod; 42. a U-shaped plate; 43. a rotating shaft; 44. a rotating wheel; 5. a pressurization mechanism; 51. a fixed block; 52. a circular groove; 53. a motor; 54. a threaded rod; 55. a threaded hole; 56. a push block; 57. a sliding clamping groove; 58. sliding the clamping strip; 59. a first booster duct; 510. a second booster duct; 6. a limiting mechanism; 61. a first sleeve; 62. a first limit groove; 63. a first stopper; 64. a second sleeve; 65. a second limit groove; 66. a second limiting block; 67. fixing the round rod; 7. a first pressure regulating pipe; 8. and a second pressure regulating pipe.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-7, the double-stroke limiting hydraulic cylinder according to the present invention includes a hydraulic cylinder 1, a moving mechanism 2 is fixedly connected inside the hydraulic cylinder 1, a sealing mechanism 3 is disposed at an opening of the hydraulic cylinder 1, a stabilizing mechanism 4 is disposed on a surface of the moving mechanism 2, a pressurizing mechanism 5 is fixedly connected on a lower surface of the hydraulic cylinder 1, a limiting mechanism 6 is disposed on a surface of the moving mechanism 2, a first pressure regulating pipe 7 is fixedly communicated with an outer wall of one end of the hydraulic cylinder 1 close to the opening, and a second pressure regulating pipe 8 is fixedly communicated with an outer wall of the other end of the hydraulic cylinder 1.

Concretely, moving mechanism 2 includes circle piece 21, circle piece 21 activity cup joints inside hydraulic cylinder 1, ring channel 22 has been seted up on the excircle lateral wall of circle piece 21, ring channel 22's inside joint has sealing ring 23, fixedly connected with push rod 24 on one side lateral wall of circle piece 21, through first pressure regulating pipe 7 and second pressure regulating pipe 8 to the inside hydraulic oil that lets in of hydraulic cylinder, promote circle piece 21 through the flow of hydraulic oil and slide in hydraulic cylinder 1 is inside, when circle piece 21 removes to sealed piece 31 in hydraulic cylinder 1 is inside, circle piece 21 drives push rod 24 and removes.

Specifically, the sealing mechanism 3 comprises a sealing block 31, the sealing block 31 is clamped at the opening of the hydraulic cylinder 1, a fixed sleeve ring 32 is fixedly sleeved on the outer wall of the sealing block 31, two through holes 33 are symmetrically formed in the surface of the fixed sleeve ring 32, bolts 34 are respectively inserted into the two through holes 33, the two bolts 34 are respectively in threaded connection with the inner parts of two screw holes 35, the two screw holes 35 are symmetrically formed in the outer wall of the opening of the hydraulic cylinder 1, an annular clamping groove 36 is formed in the outer circumferential side wall of the sealing block 31, a sealing ring 37 is clamped and connected inside the annular clamping groove 36, a jack 38 is formed in the center of the sealing block 31, when the U-shaped plate 42 impacts the sealing block 31, the fixing collar 32 is fixed at the opening of the hydraulic cylinder 1 through the bolt 34, the sealing block 31 is prevented from being knocked out of the interior of the hydraulic cylinder 1 by the impact of the round block 21, and leakage of the opening of the hydraulic cylinder 1 is prevented.

Specifically, stabilizing mean 4 includes dead lever 41, two dead lever 41 symmetry fixed connection are on the surface of push rod 24, the equal fixedly connected with U-shaped plate 42 of the other end of two dead levers 41, the equal fixedly connected with pivot 43 in inside of two U-shaped plates 42, the equal rotation in surface of two pivot 43 is connected with runner 44, push rod 24 mobilizes dead lever 41 and removes, it removes to mobilize U-shaped plate 42 when dead lever 41 removes, U-shaped plate 42 drives runner 44 through pivot 43 and rotates, support push rod 24 through two runner 43, prevent that push rod 24 from rocking, when U-shaped plate 42 and sealed piece 31 contact, there is the interval between round piece 21 and the first pressure regulating pipe 7, prevent that round piece 21 from plugging up first pressure regulating pipe 7, and prevent round piece 21 and sealed piece 31 from coming into contact through U-shaped plate 42, and then prevent that the round piece from causing the damage to sealed piece 31.

Specifically, the pressurizing mechanism 5 comprises a fixed block 51, the fixed block 51 is fixedly connected to the lower surface of the hydraulic cylinder 1, a circular groove 52 is formed in the fixed block 51, a motor 53 is fixedly connected to the outer wall of the fixed block 51, a threaded rod 54 is fixedly connected to the output end of the motor 53, the threaded rod 54 is rotatably connected to the surface of the fixed block 51 through a waterproof bearing, the threaded rod 54 is in threaded connection with the inside of a threaded hole 55, the threaded hole 55 is formed in the inner wall of a push block 56, the push block 56 is sleeved inside the circular groove 52, two sliding clamping grooves 57 are symmetrically formed in the outer circumferential side wall of the push block 56, sliding clamping strips 58 are respectively clamped inside the two sliding clamping grooves 57, the two sliding clamping strips 58 are respectively and symmetrically and fixedly connected to the inner wall of the circular groove 52, a first pressurizing pipe 59 is fixedly communicated with one end of the circular groove 52, a second pressurizing pipe 510 is fixedly communicated with, the threaded rod 54 drives the push block 56 to move through the threaded hole 55, when the push block is pushed to move, the hydraulic oil in the circular groove 52 is pushed to move, and the hydraulic oil moves to the linkage rod of the hydraulic pipe 1 through the first pressure increasing pipe 59 and the second pressure increasing pipe 510 to increase the pressure on the press block 21.

Specifically, the limiting mechanism 6 includes a first sleeve 61, the first sleeve 61 is fixedly connected to a side wall of the round block 21 away from the push rod 24, two first limiting grooves 62 are symmetrically formed on an inner wall of the first sleeve 61, matched first limiting blocks 63 are respectively clamped inside the two first limiting grooves 62, the two first limiting blocks 63 are fixedly connected to a surface of a second sleeve 64, two second limiting grooves 65 are symmetrically formed on an inner wall of the second sleeve 64, matched second limiting blocks 66 are respectively clamped inside the two second limiting grooves 65, the two second limiting blocks 66 are fixedly connected to a surface of a fixed round rod 67, the other end of the fixed round rod 67 is fixedly connected to the inside of the hydraulic cylinder 1, when the round block 21 moves towards the inside of the hydraulic cylinder 1, the round block pushes the fixed round rod 67 to be inserted into the second sleeve 64, and pushes the second sleeve 64 to be inserted into the first sleeve 61, the round block 21 is supported by the first sleeve 61, so that the round block 21 is prevented from directly contacting with the inside of the hydraulic cylinder 1, the round block 21 is further prevented from blocking the second pressure regulating pipe 8, and the round block 21 is prevented from being collided with the inside of the hydraulic cylinder 1 to cause damage.

Specifically, one end of the first pressure increasing pipe 59, which is far away from the fixed block 51, is fixedly communicated with one end side wall of the hydraulic cylinder 1, which is close to the opening, one end of the second pressure increasing pipe 510, which is far away from the fixed block 51, is fixedly communicated with one end side wall of the hydraulic cylinder 1, which is far away from the opening, the length of the first sleeve 61 is longer than the distance from the second pressure adjusting pipe 8 to the inside of the hydraulic cylinder 1, and the lengths of the first sleeve 61 and the second sleeve 64 are the same.

When the hydraulic cylinder is used, firstly, hydraulic oil is introduced into the hydraulic cylinder 1 through the first pressure regulating pipe 7, meanwhile, hydraulic oil at the other end of the hydraulic cylinder 1 is sucked out through the second pressure regulating pipe 8, the hydraulic oil flows in the hydraulic cylinder 1, the round block 21 is pushed to slide in the hydraulic cylinder 1 through the flow of the hydraulic oil, when the round block 21 moves to the sealing block 31 in the hydraulic cylinder 1, the round block 21 drives the push rod 24 to move, the push rod 24 drives the fixing rod 41 to move, the U-shaped plate 42 is moved when the fixing rod 41 moves, the U-shaped plate 42 drives the rotating wheel 44 to rotate through the rotating shaft 43, the push rod 24 is supported through the two rotating wheels 43, the push rod 24 is prevented from shaking, when the U-shaped plate 42 is in contact with the sealing block 31, a distance of 1mm exists between the round block 21 and the first pressure regulating pipe 7, the round block 21 is prevented from blocking the first pressure regulating pipe 7, and the round block 21 is prevented, and further prevent the round block from damaging the sealing block 31, when the U-shaped plate 42 impacts the sealing block 31, the fixing collar 32 is fixed at the opening of the hydraulic cylinder 1 through the bolt 34, prevent the round block 21 from impacting the sealing block 31 to knock out the sealing block 1 from the inside of the hydraulic cylinder 1, prevent the opening of the hydraulic cylinder 1 from leaking, when the round block 21 moves towards the inside of the hydraulic cylinder 1, the round block pushes the fixing round rod 67 to be inserted into the second sleeve 64, pushes the second sleeve 64 to be inserted into the first sleeve 61, support the round block 21 through the first sleeve 61, prevent the round block 21 from directly contacting with the inside of the hydraulic cylinder 1, further prevent the round block 21 from blocking the second pressure adjusting pipe 8, prevent the round block 21 from impacting the inside of the hydraulic cylinder 1 to cause damage, and prevent the inside of the hydraulic cylinder from being blocked and damaged, and prevent the hydraulic cylinder from being incapable of normal use.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a spacing pneumatic cylinder of double-stroke, includes a hydraulic pressure section of thick bamboo (1), the inside fixedly connected with moving mechanism (2) of a hydraulic pressure section of thick bamboo (1), the opening part of a hydraulic pressure section of thick bamboo (1) is provided with sealing mechanism (3), moving mechanism (2) be provided with stabilizing mean (4) on the surface, fixedly connected with booster mechanism (5) on the lower surface of a hydraulic pressure section of thick bamboo (1), moving mechanism (2) be provided with stop gear (6) on the surface, a hydraulic pressure section of thick bamboo (1) is close to fixed intercommunication on the open-ended one end outer wall and has first pressure regulating pipe (7), fixed intercommunication has second pressure regulating pipe (8) on the other end outer wall of a hydraulic pressure section of thick bamboo.

2. The double-stroke limit hydraulic cylinder as claimed in claim 1, wherein: moving mechanism (2) include circle piece (21), circle piece (21) activity cup joints inside hydraulic pressure section of thick bamboo (1), ring channel (22) have been seted up on the excircle lateral wall of circle piece (21), the inside joint of ring channel (22) has sealing ring (23), fixedly connected with push rod (24) on the lateral wall of one side of circle piece (21).

3. The double-stroke limit hydraulic cylinder as claimed in claim 1, wherein: sealing mechanism (3) are including sealed piece (31), the opening part of sealed piece (31) joint in hydraulic pressure section of thick bamboo (1), fixed cover has connect fixed lantern ring (32) on the outer wall of sealed piece (31), two through-hole (33), two have been seted up to the symmetry on the surface of fixed lantern ring (32) the inside of through-hole (33) is all pegged graft and has been had bolt (34), two bolt (34) difference threaded connection is in the inside of two screw (35), two screw (35) symmetry is seted up on the opening outer wall of hydraulic pressure section of thick bamboo (1), ring groove (36) have been seted up on the excircle lateral wall of sealed piece (31), the inside joint of ring groove (36) has sealing washer (37), jack (38) have been seted up to the center department of sealed piece (31).

4. The double-stroke limit hydraulic cylinder as claimed in claim 1, wherein: stabilizing mean (4) is including dead lever (41), two dead lever (41) symmetry fixed connection is on the surface of push rod (24), two the equal fixedly connected with U-shaped plate (42) of the other end of dead lever (41), two the equal fixedly connected with pivot (43) of inside of U-shaped plate (42), two the equal rotation in surface of pivot (43) is connected with runner (44).

5. The double-stroke limit hydraulic cylinder as claimed in claim 1, wherein: booster mechanism (5) includes fixed block (51), fixed block (51) fixed connection is on the lower surface of hydraulic pressure section of thick bamboo (1), circular slot (52) have been seted up to the inside of fixed block (51), fixedly connected with motor (53) on the outer wall of fixed block (51), the output fixedly connected with threaded rod (54) of motor (53), threaded rod (54) rotate through waterproof bearing and connect on the surface of fixed block (51), threaded rod (54) threaded connection is inside screw hole (55), screw hole (55) are seted up on the inner wall of ejector pad (56), ejector pad (56) cup joint inside circular slot (52), two sliding clamping groove (57) have been seted up to the symmetry on the excircle lateral wall of ejector pad (56), two the equal joint in inside of sliding clamping groove (57) has sliding clamping strip (58), two sliding clamping strip (58) symmetry fixed connection respectively is on the inner wall of circular slot (52), one end of the circular groove (52) is fixedly communicated with a first pressurizing pipe (59), and the other end of the circular groove (52) is fixedly communicated with a second pressurizing pipe (510).

6. The double-stroke limit hydraulic cylinder as claimed in claim 1, wherein: the limiting mechanism (6) comprises a first sleeve (61), the first sleeve (61) is fixedly connected to the side wall of one side of the round block (21) far away from the push rod (24), two first limiting grooves (62) are symmetrically formed in the inner wall of the first sleeve (61), matched first limiting blocks (63) are clamped in the two first limiting grooves (62), the two first limiting blocks (63) are fixedly connected to the surface of the second sleeve (64), two second limiting grooves (65) are symmetrically formed in the inner wall of the second sleeve (64), matched second limiting blocks (66) are clamped in the two second limiting grooves (65), the two second limiting blocks (66) are fixedly connected to the surface of the fixed round rod (67), the other end of the fixed round rod (67) is fixedly connected inside the hydraulic cylinder (1).

7. The double-stroke limit hydraulic cylinder as claimed in claim 5, wherein: one end of the first pressure increasing pipe (59), which is far away from the fixed block (51), is fixedly communicated with the side wall of one end, which is close to the opening, of the hydraulic cylinder (1), and one end of the second pressure increasing pipe (510), which is far away from the fixed block (51), is fixedly communicated with the side wall of one end, which is far away from the opening, of the hydraulic cylinder (1).

8. The double-stroke limit hydraulic cylinder as claimed in claim 6, wherein: the length of the first sleeve (61) is longer than the distance from the second pressure regulating pipe (8) to the interior of the hydraulic cylinder (1), and the length of the first sleeve (61) is the same as that of the second sleeve (64).

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