CN208997078U

CN208997078U - Hydraulic cylinder is used in a kind of transmission of hydraulic stem

Info

Publication number: CN208997078U
Application number: CN201821908014.3U
Authority: CN
Inventors: 秦展田
Original assignee: Guilin University of Aerospace Technology
Current assignee: Guilin University of Aerospace Technology
Priority date: 2018-11-20
Filing date: 2018-11-20
Publication date: 2019-06-18
Anticipated expiration: 2028-11-20

Abstract

The utility model relates to hydraulic cylinder technical fields, and disclose a kind of hydraulic stem transmission hydraulic cylinder, including cylinder body, the left end of the cylinder body is fixedly connected with cylinder cap, the right end movable sleeve of cylinder body is connected to piston rod, piston rod through cylinder body right end and the outside that extends on the right side of cylinder body and be fixedly connected with trunnion, the right end of trunnion is fixedly connected with earrings.Hydraulic stem transmission hydraulic cylinder, it is acted on by the elastic force of compressed spring, fixed block and fixation hole pivot bush unit can be made to play fixed effect, the installation of dustband is completed when the inside for pushing two fixing seats to enter fixed link allows fixed block and fixation hole pivot bush unit, it pulls up pull ring and takes out fixing seat and can take out dustband and it is replaced, it avoids dustband and is not easy to the problem of dismounting and change influences cylinder body service efficiency, substantially increase the installation and replacement efficiency of dustband, it ensure that the leakproofness of cylinder body, substantially increase the practicability of the hydraulic cylinder.

Description

Hydraulic cylinder is used in a kind of transmission of hydraulic stem

Technical field

The utility model relates to hydraulic cylinder technical field, hydraulic cylinder is used in specially a kind of hydraulic stem transmission.

Background technique

Hydraulic cylinder is that hydraulic energy is changed into mechanical energy, the hydraulic of straight reciprocating motion (or pendulum motion) is done and executes member Part, its structure is simple, reliable operation, when realizing reciprocating motion, can remove deceleration device from it, and do not have drive gap, Movement is steady, therefore is used widely in the hydraulic system of various machinery, hydraulic cylinder power output and piston effective area and The pressure difference on its both sides is directly proportional, hydraulic cylinder substantially by cylinder barrel and cylinder cap, piston and piston rod, sealing device, buffer unit with Exhaust apparatus composition.

The dust in air and pollutant enter inside hydraulic cylinder to influence liquid hydraulic cylinder in order to prevent at runtime Dustband often is fixedly mounted in the junction of hydraulic cylinder and piston rod to prevent dust and pollutant from entering in the quality of pressure oil To the inside of hydraulic cylinder, and as the prolonged piston motion of piston rod causes biggish abrasion to dustband, in addition dustband The aging action of itself can be such that the sealing performance of dustband reduces, so needing to regularly replace dustband to guarantee liquid The leakproofness of cylinder pressure, and existing hydraulic cylinder is the inside that dustband is fixedly mounted on to hydraulic cylinder mostly, is not easy to disassembly more It changes, in addition, existing hydraulic cylinder is at work, the temperature raising of hydraulic oil can make the reduction of hydraulic oil viscosity, accelerate sealing element Aging so as to cause hydraulic oil severe leakage, therefore, need to produce a kind of hydraulic stem transmission and solve above-mentioned ask with hydraulic cylinder Topic.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of hydraulic stem transmission hydraulic cylinder, has convenient for peace It fills and replaces dustband and effectively carry out cooling advantage to the temperature of hydraulic oil, solve hydraulic cylinder at runtime in order to anti- Only the dust in air and pollutant enter inside hydraulic cylinder the quality for influencing hydraulic oil, often in hydraulic cylinder and work Dustband is fixedly mounted to prevent dust and pollutant from entering the inside of hydraulic cylinder in the junction of stopper rod, and as piston rod is long The piston motion of time causes biggish abrasion to dustband, in addition the aging action of dustband itself, can make the close of dustband Sealing property reduces, so need to regularly replace dustband the leakproofness to guarantee hydraulic cylinder, and existing hydraulic cylinder is big Mostly it is the inside that dustband is fixedly mounted on to hydraulic cylinder, is not easy to dismounting and change, in addition, existing hydraulic cylinder is at work, The temperature raising of hydraulic oil can make the reduction of hydraulic oil viscosity, accelerate the aging of sealing element so as to cause hydraulic oil severe leakage Problem.

The utility model provides the following technical solutions: a kind of hydraulic stem transmission hydraulic cylinder, including cylinder body, the cylinder body Left end is fixedly connected with cylinder cap, and the right end movable sleeve of the cylinder body is connected to piston rod, and the piston rod runs through the right end of cylinder body simultaneously The outside that extends on the right side of cylinder body and it is fixedly connected with trunnion, the right end of the trunnion is fixedly connected with earrings, the piston rod Left end be fixedly connected with the piston positioned at cylinder interior, the right end at the top and bottom of the cylinder body is fixedly installed with fixation Bar, the quantity of the fixed link are two, and two equal movable sleeves in the mutually separate one end of the fixed link are connected to pull rod, the pull rod Top be fixedly connected with the pull ring outside fixed link, the bottom of the pull rod is fixedly connected with inside fixed link Fixed block, the right end of the cylinder body are movably installed with the fixing seat of the two sides above and below piston rod, and the quantity of the fixing seat is Two, dustband, the inside of the dustband and the outer surface activity of piston rod are fixedly installed between two fixing seats Socket, the left end of two fixing seats run through the right side of fixed link and extend to the inside of fixed link, the cylinder body Outer surface fixing sleeve is connected to cooling tube, and the left end fixation of the cooling tube is communicated with water inlet pipe, and the right end of the cooling tube is fixed It is communicated with outlet pipe.

Preferably, the left end at the top of the cylinder body is provided with oil inlet, and the right end at the top of the cylinder body is fixedly installed with position Oil outlet on the left of fixed link, the oil inlet and oil outlet are connected to the fixation of the inside of cylinder body.

Preferably, the outer surface fixing sleeve of the piston is connected to sealing ring, the size of the sealing ring and the size of piston It is adapted, two sealing rings are flexibly connected with the inner wall of cylinder body, and the right end of the cylinder interior is fixedly installed with positioned at dust-proof Enclose the guide sleeve in left side, the inside of the guide sleeve and the outer surface pivot bush unit of piston rod.

Preferably, two mutually separate one sides of the fixing seat offer fixation hole, and the fixation hole and fixed block are living Dynamic socket, left end, fixed block and the fixation hole of the fixing seat are trapezoidal, the left end of the fixing seat and the right end of fixed block Shape is adapted, and the fixation hole is adapted with the size and shape of fixed block.

Preferably, the outer surface movable sleeve of the pull rod is connected to the compressed spring inside fixed link, the compression bullet The top of spring is fixedly connected with the inner wall at the top of fixed link, is fixedly connected at the top of the bottom end of the compressed spring and fixed block.

Preferably, the right side of two fixed links offers loose slot, the width size of the loose slot and solid The size of reservation left end is adapted.

Be compared with the prior art, the utility model have it is following the utility model has the advantages that

1, hydraulic stem transmission hydraulic cylinder can make dustband be fixedly mounted on two by the way that two fixing seats are arranged Between fixing seat, by offering loose slot in the right side of two fixed links, extend to the left end of two fixing seats It is being pressed using the mutual cooperation between fixation hole, fixed link, pull rod, pull ring, fixed block and compressed spring the inside of fixed link Under the elastic force effect of contracting spring, fixed block and fixation hole pivot bush unit can be made to play fixed effect, i.e., it is solid at promotion two The inside that reservation enters fixed link allows the installation that dustband is completed when fixed block and fixation hole pivot bush unit, pulls up drawing Ring simultaneously takes out fixing seat and can take out dustband and replace to it, avoids dustband and is not easy to dismounting and change and influences cylinder body to use effect The problem of rate, substantially increases the installation and replacement efficiency of dustband, ensure that the leakproofness of cylinder body, it is hydraulic to substantially increase this The practicability of cylinder.

2, hydraulic stem transmission hydraulic cylinder, it is same in hydraulic cylinder works by setting cooling tube, water inlet pipe and outlet pipe When open water inlet pipe and outlet pipe, recycling the inside of cooling tube has cold water, temperature that can effectively to cylinder interior hydraulic oil Cooled down, avoid hydraulic oil temperature raising can make hydraulic oil viscosity reduction, accelerate the aging of sealing element so as to cause The problem of hydraulic oil severe leakage, substantially increases the thermal diffusivity of the hydraulic cylinder, ensure that the service life of the hydraulic cylinder.

Detailed description of the invention

Fig. 1 is the schematic diagram of internal structure of the utility model；

Fig. 2 is the outside drawing of the utility model Fig. 1；

Fig. 3 is the enlarged drawing at the utility model A；

Fig. 4 is the structural schematic diagram of the utility model loose slot.

In figure: 1, cylinder body；2, cylinder cap；3, piston rod；4, piston；5, trunnion；6, earrings；7, oil inlet；8, oil outlet；9, Sealing ring；10, fixing seat；11, dustband；12, fixation hole；13, fixed link；14, pull rod；15, pull ring；16, fixed block；17, Compressed spring；18, guide sleeve；19, loose slot；20, cooling tube；21, water inlet pipe；22, outlet pipe.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Please refer to Fig. 1-4, a kind of hydraulic stem transmission hydraulic cylinder, including cylinder body 1, the left end at 1 top of cylinder body be provided with into Hydraulic fluid port 7, the right end at the top of cylinder body 1 are fixedly installed with the oil outlet 8 positioned at 13 left side of fixed link, oil inlet 7 and oil outlet 8 with The fixed connection in the inside of cylinder body 1, the left end of cylinder body 1 are fixedly connected with cylinder cap 2, and the right end movable sleeve of cylinder body 1 is connected to piston rod 3, Piston rod 3 runs through the right end of cylinder body 1 and extends to the outside on 1 right side of cylinder body and be fixedly connected with trunnion 5, and the right end of trunnion 5 is solid Surely it is connected with earrings 6, the left end of piston rod 3 is fixedly connected with the piston 4 inside cylinder body 1, the outer surface fixing sleeve of piston 4 It is connected to sealing ring 9, the size of sealing ring 9 is adapted with the size of piston 4, and two sealing rings 9 are flexibly connected with the inner wall of cylinder body 1, Right end inside cylinder body 1 is fixedly installed with the guide sleeve 18 positioned at 11 left side of dustband, inside and the piston rod 3 of guide sleeve 18 Outer surface pivot bush unit, the right end of 1 top and bottom of cylinder body are fixedly installed with fixed link 13, and the quantity of fixed link 13 is two A, the right side of two fixed links 13 offers loose slot 19, by offering activity in the right side of two fixed links 13 Slot 19 allows the left end of two fixing seats 10 to extend to the inside of fixed link 13, the width size and fixing seat of loose slot 19 The size of 10 left ends is adapted, and two equal movable sleeves in the mutually separate one end of fixed link 13 are connected to pull rod 14, the outer surface of pull rod 14 Movable sleeve is connected to the compressed spring 17 inside fixed link 13, under the elastic force effect of compressed spring 17, can make fixed block 16 play fixed effect with 12 pivot bush unit of fixation hole, i.e., make admittedly in the inside for pushing two fixing seats 10 to enter fixed link 13 Determine the installation that dustband 11 can be completed when block 16 and 12 pivot bush unit of fixation hole, the top of compressed spring 17 and fixed link 13 are pushed up The inner wall in portion is fixedly connected, and the bottom end of compressed spring 17 is fixedly connected with the top of fixed block 16, and the top of pull rod 14 is fixed to be connected It is connected to the pull ring 15 being located at outside fixed link 13, dustband 11 can be taken out to it by pulling up pull ring 15 and taking out fixing seat 10 Replacement avoids dustband 11 and is not easy to the problem of dismounting and change influences 1 service efficiency of cylinder body, substantially increases dustband 11 Installation and replacement efficiency ensure that the leakproofness of cylinder body 1, substantially increase the practicability of the hydraulic cylinder, and the bottom of pull rod 14 is solid Surely the fixed block 16 being connected with inside fixed link 13, the right end of cylinder body 1 are movably installed with positioned at about 3 two sides of piston rod Fixing seat 10, the quantity of fixing seat 10 are two, by the way that two fixing seats 10 are arranged, dustband 11 can be made to be fixedly mounted on two Between a fixing seat 10, the mutually separate one side of two fixing seats 10 offers fixation hole 12, and fixation hole 12 and fixed block 16 are living Dynamic socket, left end, fixed block 16 and the fixation hole 12 of fixing seat 10 are trapezoidal, the left end of fixing seat 10 and the right side of fixed block 16 End shape is adapted, and fixation hole 12 is adapted with the size and shape of fixed block 16, is fixedly installed between two fixing seats 10 Dustband 11, the inside of dustband 11 and the outer surface pivot bush unit of piston rod 3, the left end of two fixing seats 10 runs through fixed The right side of bar 13 and the inside for extending to fixed link 13, the outer surface fixing sleeve of cylinder body 1 are connected to cooling tube 20, cooling tube 20 Left end is fixed to be communicated with water inlet pipe 21, and the right end fixation of cooling tube 20 is communicated with outlet pipe 22, passes through setting cooling tube 20, water inlet Pipe 21 and outlet pipe 22, water inlet pipe 21 and outlet pipe 22 are opened simultaneously in hydraulic cylinder works, recycle the inside of cooling tube 20 Have cold water, can the temperature effectively to cylinder body 1 internal hydraulic pressure oil cool down, avoid hydraulic oil temperature raising can make it is hydraulic Oily viscosity reduces, and accelerates the problem of aging of sealing element is so as to cause hydraulic oil severe leakage, substantially increases the hydraulic cylinder Thermal diffusivity, ensure that the service life of the hydraulic cylinder.

When dustband 11 is installed, first dustband 11 is fixed between two fixing seats 10, then by two fixing seats 10 Left end insertion loose slot 19 in and push loose slot 19 to enter the inside of fixed link 13, the work of the left end of fixing seat 10 in thrust Fixed block 16 can be allowed to move up under, continue to press on fixing seat 10, make fixation hole 12 under the elastic force effect of compressed spring 17 and consolidated Determine the effect for the fixation that 16 pivot bush unit of block reaches, i.e., makes fixed block in the inside for pushing two fixing seats 10 to enter fixed link 13 16 with 12 pivot bush unit of fixation hole when can complete the installation of dustband 11, when work, starting hydraulic cylinder is simultaneously opened simultaneously into water Pipe 21 and outlet pipe 22, recycling the inside of cooling tube 20 has cold water, can effectively the temperature to cylinder body 1 internal hydraulic pressure oil carry out It is cooling, after long-time use, when needing to replace dustband 11, hydraulic cylinder is first closed, then pulls two pull rings simultaneously 15 are detached from fixation hole 12 and fixed block 16, then pull two fixing seats 10 to the right until fixing seat 10 leaves the interior of fixed link 13 Portion completes the taking-up of dustband 11, finally changes new dustband 11, and when repeating above-mentioned installation the step of can be completed to dust-proof The replacement of circle 11.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of hydraulic stem transmission hydraulic cylinder, including cylinder body (1), it is characterised in that: the left end of the cylinder body (1) is fixedly connected Have cylinder cap (2), the right end movable sleeve of the cylinder body (1) is connected to piston rod (3), and the piston rod (3) runs through the right end of cylinder body (1) And the outside that extends on the right side of cylinder body (1) and be fixedly connected with trunnion (5), the right end of the trunnion (5) is fixedly connected with earrings (6), the left end of the piston rod (3) is fixedly connected with the piston (4) internal positioned at cylinder body (1), cylinder body (1) top and bottom The right end in portion is fixedly installed with fixed link (13), and the quantity of the fixed link (13) is two, two fixed links (13) The equal movable sleeve in mutually separate one end is connected to pull rod (14), is fixedly connected with positioned at fixed link (13) outside at the top of the pull rod (14) The pull ring (15) in portion, the bottom of the pull rod (14) is fixedly connected with the fixed block (16) internal positioned at fixed link (13), described The right end of cylinder body (1) is movably installed with the fixing seat (10) positioned at piston rod (3) two sides up and down, the quantity of the fixing seat (10) It is two, is fixedly installed with dustband (11) between two fixing seats (10), the inside of the dustband (11) and piston Right side and the extension of fixed link (13) are run through in the left end of the outer surface pivot bush unit of bar (3), two fixing seats (10) To the inside of fixed link (13), the outer surface fixing sleeve of the cylinder body (1) is connected to cooling tube (20), a left side for the cooling tube (20) End fixation is communicated with water inlet pipe (21), and the right end fixation of the cooling tube (20) is communicated with outlet pipe (22).

2. a kind of hydraulic stem transmission hydraulic cylinder according to claim 1, it is characterised in that: at the top of the cylinder body (1) Left end is provided with oil inlet (7), and the right end at the top of the cylinder body (1) is fixedly installed with the oil outlet on the left of fixed link (13) (8), the oil inlet (7) and oil outlet (8) are connected to the fixation of the inside of cylinder body (1).

3. a kind of hydraulic stem transmission hydraulic cylinder according to claim 1, it is characterised in that: the appearance of the piston (4) Face fixing sleeve is connected to sealing ring (9), and the size of the sealing ring (9) is adapted with the size of piston (4), two sealing rings (9) it is flexibly connected with the inner wall of cylinder body (1), the internal right end of the cylinder body (1) is fixedly installed on the left of dustband (11) Guide sleeve (18), the outer surface pivot bush unit of the inside of the guide sleeve (18) and piston rod (3).

4. a kind of hydraulic stem transmission hydraulic cylinder according to claim 1, it is characterised in that: two fixing seats (10) Mutually separate one side offers fixation hole (12), the fixation hole (12) and fixed block (16) pivot bush unit, the fixing seat (10) left end, fixed block (16) and fixation hole (12) is trapezoidal, left end and fixed block (16) of the fixing seat (10) Right end shape is adapted, and the fixation hole (12) is adapted with the size and shape of fixed block (16).

5. a kind of hydraulic stem transmission hydraulic cylinder according to claim 1, it is characterised in that: the appearance of the pull rod (14) Face movable sleeve is connected to the compressed spring (17) internal positioned at fixed link (13), the top of the compressed spring (17) and fixed link (13) inner wall at the top of is fixedly connected, and is fixedly connected at the top of the bottom end and fixed block (16) of the compressed spring (17).

6. a kind of hydraulic stem transmission hydraulic cylinder according to claim 1, it is characterised in that: two fixed links (13) Right side offer loose slot (19), the width size of the loose slot (19) and the size of fixing seat (10) left end are mutually fitted Match.