CN213711491U - High-load high-stability ultrahigh-pressure hydraulic cylinder - Google Patents

Abstract

The utility model discloses a high-load and high-stability ultra-high pressure hydraulic cylinder, which comprises a hydraulic cylinder body, wherein the hydraulic cylinder body comprises a cylinder barrel, a cylinder cover and a piston rod movably inserted into the cylinder barrel. One end of the piston is provided with a piston, the outer side wall of the piston is sleeved with a piston main sealing ring, and the outer side wall of the piston and the positions corresponding to the opposite sides of the piston main sealing ring are sequentially provided with anti-wear rings, An anti-fouling ring and a secondary piston sealing ring, the interior of the piston and the position corresponding to the secondary sealing ring of the piston are provided with accommodating chambers arranged along the circumferential direction of the piston, and the opposite ends of the piston are respectively provided with a number of accommodating chambers A vertical channel communicated with the corresponding accommodating cavity, and a plurality of horizontal channels communicated with the accommodating cavity are provided on the side wall of the piston and at a position corresponding to the auxiliary sealing ring of the piston. The utility model has the advantages of reasonable structure design, good use stability and good sealing effect, which is favorable for the popularization and application of marketization.

Description

High-load high-stability ultrahigh-pressure hydraulic cylinder

Technical Field

The utility model relates to a pneumatic cylinder technical field, concretely relates to high load high stability type superhigh pressure pneumatic cylinder.

Background

The hydraulic cylinder is a hydraulic execution unit which converts hydraulic energy into mechanical energy and makes linear reciprocating motion. It has simple structure and reliable operation. When the reciprocating motion is realized by the reciprocating motion mechanism, a speed reducing device can be omitted, and a transmission gap is avoided, so the reciprocating motion mechanism is widely applied to hydraulic systems of various machines. In the prior art, for a high-load ultrahigh-pressure hydraulic cylinder, the overall appearance is large, so that the accuracy of a shell structure is low during preparation, the problems of poor stability and poor sealing performance exist after assembly, and the requirements of people cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, provide a structural design is reasonable, and the stability in use is good, sealed effectual high load high stability type superhigh pressure pneumatic cylinder.

The utility model adopts the following technical scheme:

a high-load high-stability ultrahigh-pressure hydraulic cylinder comprises a hydraulic cylinder body, wherein the hydraulic cylinder body comprises a hollow cylinder barrel, a cylinder cover and a piston rod, one end of the cylinder barrel is provided with an opening, the cylinder cover is fixed at the opening end of the cylinder barrel, the other end of the piston rod is movably inserted in the cylinder barrel, the end part of the piston rod, which corresponds to the inside of the cylinder barrel, is fixedly provided with a connecting rod, the connecting rod is sequentially and fixedly sleeved with a buffer sleeve, a piston and a fixed snap ring, a piston main sealing ring is fixedly sleeved on the outer side wall of the piston and corresponds to the position of the transverse axis of the piston, the outer side wall of the piston and the positions corresponding to the upper and lower opposite sides of the piston main sealing ring are respectively provided with an anti-wear ring, an anti-fouling ring and a piston auxiliary sealing ring which are sequentially arranged along the direction away from the piston, the relative both ends tip of piston is equipped with a plurality of respectively along the circumferential direction evenly distributed of piston and with the vertical passageway that holds the chamber intercommunication that corresponds, on the lateral wall of piston and the position department corresponding to the vice sealing washer of piston be equipped with a plurality of along the circumferential direction evenly distributed of piston lateral wall and with hold the communicating horizontal passage in chamber.

As an optimal technical scheme of the utility model, the joint has dust ring, piston rod main seal circle, buffering circle and guide ring in proper order on the inside wall of cylinder cap.

As a preferred technical scheme of the utility model, the bottom tip of piston is equipped with the draw-in groove that sets up along the bottom circumference direction of piston, the position department that the top of fixed snap ring corresponds to the draw-in groove is equipped with the fastener with draw-in groove looks adaptation, the fastener joint is in the draw-in groove, just connect soon through the screw thread between fixed snap ring and the connecting rod and be in the same place.

As a preferred technical scheme of the utility model, the position department that just is close to the cylinder bottom on the lateral wall of cylinder is equipped with the inside communicating lower oil feed passageway of cylinder, just be equipped with the inside communicating last oil feed passageway of cylinder on the lateral wall of cylinder cap corresponding to the position department of guide ring below.

The utility model has the advantages that:

the utility model has reasonable structural design and good use effect, and the buffer sleeve and the guide ring arranged in the utility model can effectively improve the stability of the hydraulic cylinder body when in use; and the piston secondary seal ring that sets up cooperates and holds chamber, vertical passageway and horizontal passageway and has good sealed effect to the highly compressed pneumatic cylinder of high load when using to great improvement the result of use of pneumatic cylinder body, be favorable to the popularization and application of marketization.

Drawings

Fig. 1 is a schematic cross-sectional view of a high-load high-stability type ultrahigh-pressure hydraulic cylinder according to the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

the symbols in the drawings illustrate that:

the cylinder barrel 1, the cylinder cap 2, the piston rod 3, the connecting rod 4, the cushion collar 5, the piston 6, fixed snap ring 7, piston main seal circle 8, wear-resistant ring 9, antifouling ring 10, piston secondary seal circle 11 holds chamber 12, vertical passageway 13, horizontal passageway 14, dust ring 15, piston rod main seal circle 16, buffer ring 17, guide ring 18, fastener 19, lower oil feed passageway 20, go up oil feed passageway 21.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, a high-load high-stability ultrahigh-pressure hydraulic cylinder comprises a hydraulic cylinder body, wherein the hydraulic cylinder body comprises a hollow cylinder barrel 1 with an opening at one end, a cylinder cover 2 fixed at the opening end of the cylinder barrel 1 and a piston rod 3 with one end movably inserted into the cylinder barrel 1 and the other end penetrating through the cylinder cover 2, a connecting rod 4 is fixedly arranged at one end of the piston rod 3 corresponding to the inside of the cylinder barrel 1, a buffer sleeve 5, a piston 6 and a fixed snap ring 7 are sequentially and fixedly sleeved on the connecting rod 4, a piston main seal ring 8 is fixedly sleeved on the outer side wall of the piston 6 and corresponding to the position of the transverse axis of the piston 6, an anti-wear ring 9, an anti-fouling ring 10 and a piston auxiliary seal ring 11 are sequentially arranged on the outer side wall of the piston 6 and corresponding to the upper and lower opposite sides of the piston main seal ring 8, an accommodating cavity 12 which is arranged along the circumferential direction of the piston 6 is arranged in the piston 6 and at a position corresponding to the piston secondary sealing ring 11, a plurality of vertical channels 13 which are uniformly distributed along the circumferential direction of the piston 6 and communicated with the corresponding accommodating cavity 12 are respectively arranged at the end parts of the two opposite ends of the piston 6, and a plurality of horizontal channels 14 which are uniformly distributed along the circumferential direction of the side wall of the piston 6 and communicated with the accommodating cavity 12 are arranged on the side wall of the piston 6 and at a position corresponding to the piston secondary sealing ring 11; further, when the piston type oil cylinder is used, after high-pressure oil is filled in the cylinder barrel 1, the high-pressure oil enters the accommodating cavity 12 through the vertical channel 13 and enters the horizontal channel 14 from the accommodating cavity 12, so that outward extrusion force is formed on the piston auxiliary sealing ring 11, and the sealing effect between the piston auxiliary sealing ring 11 and the inner side wall of the cylinder barrel 1 is further enhanced;

furthermore, the inside wall of cylinder cap 2 is in turn connected with a dustproof ring 15, a piston rod main seal ring 16, a buffer ring 17 and a guide ring 18.

Further, a clamping groove (not marked in the figure) arranged along the circumferential direction of the bottom end of the piston 6 is formed in the end portion of the bottom end of the piston 6, a clamping piece 19 matched with the clamping groove is arranged at the position, corresponding to the clamping groove, of the top end of the fixed clamping ring 7, and the clamping piece 19 and the fixed clamping ring 7 are of an integrally formed structure; during the equipment, 19 joints of fastener are in the draw-in groove, just connect soon through the screw thread between stationary clasp 7 and the connecting rod 4 and be in the same place, promptly when the equipment, locate connecting rod 4 with buffer sleeve 5 and piston 6 cover earlier, connect soon buffer sleeve 4 and piston 6 joint on connecting rod 4 through the screw thread between stationary clasp 7 and the connecting rod 4.

Furthermore, a lower oil inlet channel 20 communicated with the inside of the cylinder barrel 1 is arranged on the side wall of the cylinder barrel 1 and at a position close to the bottom end of the cylinder barrel 1, and an upper oil inlet channel 21 communicated with the inside of the cylinder barrel 1 is arranged on the side wall of the cylinder cover 2 and at a position corresponding to the lower part of the guide ring 18.

Finally, it should be noted that: these embodiments are merely illustrative of the present invention and do not limit the scope of the invention. In addition, other variations and modifications will be apparent to persons skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.

Claims (4)

1. The utility model provides a high load high stability type superhigh pressure pneumatic cylinder, includes the pneumatic cylinder body, the pneumatic cylinder body includes that inside cavity and one end have open-ended cylinder (1), be fixed in cylinder cap (2) and the one end activity of cylinder (1) open end is pegged graft and runs through in piston rod (3) that cylinder cap (2) set up, its characterized in that in the inside other end of cylinder (1): be equipped with connecting rod (4) corresponding to the inside one end fixing of cylinder (1) on piston rod (3), it is equipped with buffer sleeve (5), piston (6) and fixed snap ring (7) to fix the cover in proper order on connecting rod (4), on the lateral wall of piston (6) and the position department fixed cover that is corresponding to piston (6) transverse axis is equipped with piston main seal circle (8), on the lateral wall of piston (6) and the position department that is corresponding to piston main seal circle (8) relative both sides from top to bottom all be equipped with along the direction of keeping away from piston main seal circle (8) wear-resistant ring (9), antifouling ring (10) and piston secondary seal circle (11) that set gradually, piston (6) inside and the position department that is corresponding to piston secondary seal circle (11) are equipped with along the chamber (12) that holds that the circumference direction of piston (6) set up, the relative both ends tip of piston (6) is equipped with a plurality of along the circumference direction evenly distributed of piston (6) respectively The vertical channel (13) that holds chamber (12) intercommunication, on the lateral wall of piston (6) and the position department that corresponds to piston secondary seal circle (11) be equipped with a plurality of along the circumferential direction evenly distributed of piston (6) lateral wall and with hold communicating horizontal channel (14) in chamber (12).

2. A high-load high-stability type ultrahigh-pressure hydraulic cylinder according to claim 1, characterized in that: the inner side wall of the cylinder cover (2) is sequentially clamped with a dustproof ring (15), a piston rod main sealing ring (16), a buffer ring (17) and a guide ring (18).

3. A high-load high-stability type ultrahigh-pressure hydraulic cylinder according to claim 1, characterized in that: the bottom tip of piston (6) is equipped with the draw-in groove that sets up along the bottom circumferential direction of piston (6), the top of fixed snap ring (7) is equipped with fastener (19) with draw-in groove looks adaptation corresponding to the position department of draw-in groove, fastener (19) joint is in the draw-in groove, just connect soon through the screw thread between fixed snap ring (7) and connecting rod (4) and be in the same place.

4. A high-load high-stability type ultrahigh-pressure hydraulic cylinder according to claim 2, characterized in that: the oil cylinder is characterized in that a lower oil inlet channel (20) communicated with the inside of the cylinder barrel (1) is arranged on the side wall of the cylinder barrel (1) and close to the bottom end of the cylinder barrel (1), and an upper oil inlet channel (21) communicated with the inside of the cylinder barrel (1) is arranged on the side wall of the cylinder cover (2) and corresponding to the position below the guide ring (18).

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