CN209687836U - A kind of continuous milling machine has the single-action multi-stage oil cylinder of servo-actuated stroke - Google Patents

Abstract

The utility model discloses the single-action multi-stage oil cylinders that a kind of continuous milling machine has servo-actuated stroke, including housing cylinder and from outside to inside at least one inner sleeve cylinder in nested housing cylinder step by step, the inner sleeve cylinder bottom end of the innermost layer is fixedly connected with support plate, the inner sleeve cylinder is embedded to be cased with piston rod, cavity is equipped in the piston rod, the cavity is axially extended by piston rod bottom face to piston rod extension end, and the cavity positioned at piston rod extension end is equipped with the venthole A outside connection.

Description

A kind of continuous milling machine has the single-action multi-stage oil cylinder of servo-actuated stroke

Technical field

The utility model relates to a kind of continuous miner, in particular to the single-acting that a kind of continuous milling machine has servo-actuated stroke is more Grade oil cylinder.

Background technique

Currently, continuous miner is unit equipment important in short-walling technique.The operating condition of coal mine roadway is to even Milling machine has height, the gradient and shuttle car the shipment mode in certain requirement, especially tunnel to be affected the use of continuous milling machine.For Expand the use scope of continuous miner, transloading equipment in continuous miner and between the mainframe of continuous miner usually It is attached using multistage unidirectional oil cylinder, in use when needing shuttle car below retrogressing to transfer device, shuttle occurs often Vehicle retrogressing amplitude is excessive to cause wagon box to collide with transfer device to rise transfer device, leads to transloading equipment and host Oil cylinder between frame is damaged accident.

Utility model content

The main purpose of the utility model is to provide the single-action multi-stage oil cylinders that a kind of continuous milling machine has servo-actuated stroke, lead to Crossing the setting one in the innermost layer inner sleeve cylinder of multi-stage oil cylinder can follow transfer device to carry out the raised work with servo-actuated stroke Stopper rod avoids generation oil cylinder that from can not being servo-actuated and oil cylinder is caused to draw high overtravel and be damaged.

To achieve the above object, the technical solution that the utility model is taken are as follows:

A kind of continuous milling machine has a single-action multi-stage oil cylinder of servo-actuated stroke, including housing cylinder and embedding step by step from outside to inside At least one inner sleeve cylinder in housing cylinder is covered, the inner sleeve cylinder bottom end of the innermost layer is fixedly connected with support plate, the inner sleeve cylinder It is embedded to be cased with piston rod, it is equipped with cavity in the piston rod, the cavity is axially extended by piston rod bottom face to piston rod Extension end, the cavity positioned at piston rod extension end are equipped with the venthole A outside connection.

Further, air filtration valve is fixedly connected on the venthole A.

Further, the air filtration valve includes fitting body, and the fitting body bottom is threadingly attached to venthole A, the fitting body are equipped at least one stomata B for axially penetrating through fitting body, and the fitting body outer cup is equipped with copper filter screen.

Further, the fitting body is cylindrical, and the fitting body center is equipped with tapped through hole, in the copper filter screen It is also covered with guide post, slide lid, the guide post is threadingly attached to tapped through hole, is arranged with down in the guide post " convex " shape flexible rubber ring, the flexible rubber ring are set in the slide lid cavity, and the flexible rubber ring major part external profile diameter is big In be equal to the slide lid internal diameter, top diameter be less than the slide lid internal diameter, the flexible rubber ring enlarged head lip and sliding The fitting of lid inner sidewall, the stomata B are set between slide lid side plate inner wall, flexible rubber ring microcephaly's outer edge surface, the sliding Lid center is slidably connected after passing through guide post with guide post, and the guiding top end is fixedly connected with pressing plate, in the guide post It is arranged with spring, the both ends of the spring pushes against the pressing plate lower surface and sliding cap upper surface respectively, so that the slide lid side Board bottom face, which is bonded at the top of the slide lid with fitting body top surface, is equipped at least one venthole C.

Further, the flexible rubber ring material is rubber.

Further, the piston rod bottom end convexes to form stop collar radially outward, inner sleeve cylinder top radially towards It is interior to be equipped with limited cover.

Further, guide ring A is installed, the guide ring A is slidably connected in described on the anchor ring of the stop collar The inner wall for covering cylinder, is equipped with sealing element between the limited cover inner wall and piston rod outside wall surface, the sealing element is installed on limit On the lid inner wall of position in mounting groove, the sealing element includes two guide ring B arranged side by side and is set to limited cover top Dustband.

Further, the support plate is intercalated in inner sleeve cylinder bottom end, the support plate and inner sleeve cylinder bottom end inner wall Intercalation face is equipped with O-ring.

Further, the support plate bottom surface is equipped with boss, and when oil cylinder is fully retracted into, the boss pushes against the housing cylinder Bottom surface.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

One, the utility model is nested into piston rod by the innermost layer inner sleeve cylinder in multi-stage oil cylinder, and by the bottom of inner sleeve cylinder By connection support plate sealing so that hydraulic oil cannot be introduced into inner sleeve cylinder, then cavity is arranged, and make cavity in piston rod by end It is connected to outside air by stomata A, so that the multi-stage oil cylinder is when in use, once shuttle car occur rises transfer device, piston rod It can be stretched out out of inner sleeve cylinder, transfer device is followed to increase, avoid the occurrence of oil cylinder damage.

Two, the utility model can prevent the bulky grain in working environment by connecting air filtration valve on venthole A Dust follows air to be inhaled into the cavity of piston rod together, and piston rod is caused to damage.

Three, the utility model fixes air filtration valve by the fitting body threaded connection venthole A of air filtration valve Stablize, stomata B is set in fitting body, can be air and enter in plunger from stomata B, cover connects copper filter screen can be right Dust is effectively filtered.

Four, the utility model is cylindrical by the way that fitting body to be arranged, and facilitates the processing of fitting body, sets at fitting body center There is tapped through hole, guide post be threadingly attached to tapped through hole, and is arranged with down " convex " shape flexible rubber ring in guide post, The flexible rubber ring is set in the slide lid cavity, and the flexible rubber ring major part external profile diameter is more than or equal to the slide lid Internal diameter, top diameter are less than the slide lid internal diameter, and the stomata B is set to slide lid side plate inner wall, flexible rubber ring microcephaly Between outer edge surface, the slide lid center is slidably connected after passing through guide post with guide post, and the guiding top end is fixedly connected There is pressing plate, spring is arranged in the guide post, the both ends of the spring pushes against table on the pressing plate lower surface and slide lid respectively Face, the slide lid top are equipped at least one venthole C, may be implemented to need that transfer device is followed quickly to increase in piston rod When, when the pressure in cavity is less than outside atmosphere pressure, air enters slide lid cavity from stomata C after copper filter screen It is interior, atmospheric pressure effect under, flexible rubber ring enlarged head lip towards fitting body top surface overturn to not with slide lid side plate Inner wall fitting, so that gas can rapidly enter in inner cavity from stomata B, when shuttle car advances, transfer device falls, Piston rod is pushed back under the action of transfer device self gravity into inner sleeve cylinder, and the gas in cavity can only pressure upon compression at this time When can overcome pressure of the spring to slide lid, is slowly flowed out from slide lid and the binding face of fitting body, prevent piston rod bottom end Carrying out strong hit to support plate causes oil cylinder to damage, while can be adjusted by adjusting the depth of guide post insertion fitting body Spring is to the pressure of slide lid, and then the falling speed of regulating piston bar.

Five, the utility model by convexing to form stop collar, inner sleeve cylinder top in piston rod bottom end radially outward Radial inward is equipped with limited cover, limits to the servo-actuated stroke of piston rod.

Six, the utility model is by installation guide ring A, guide ring B and dustband can effectively to piston rod with it is interior It is sealed between intermal comflict is rigid, while also effective dust in air enters the damage that inner sleeve cylinder causes inner sleeve cylinder.

Seven, the utility model is by being intercalated in inner sleeve cylinder bottom end, the support plate and inner sleeve cylinder bottom end for support plate The intercalation face of inner wall is equipped with O-ring, and forming better seal effect prevents hydraulic fluid leak.

Eight, the utility model is by being equipped with boss in support plate bottom surface, when oil cylinder is fully retracted into, described in the boss abutting Housing cylinder bottom face, enable when oil inlet hydraulic oil preferably to support plate, inner sleeve cylinder, housing cylinder be formed by rodless cavity into It advances oily.

Detailed description of the invention

Fig. 1 is the utility model schematic structural cross-sectional view；

Fig. 2 is tail portion enlarged structure schematic diagram；

Fig. 3 is air valve schematic cross-sectional view；

Fig. 4 is structural schematic diagram when using；

Icon: 1- housing cylinder, 2- inner sleeve cylinder, 3- support plate, 4- piston rod, 5- cavity, 6- venthole A, 7- air filtration Valve, 71- fitting body, 8- stomata B, 77- copper filter screen,

711- tapped through hole, 73- flexible rubber ring, 74- slide lid, 72- guide post,

75- pressing plate, 76- spring, 741- venthole C, 41- stop collar, 411- guide ring A,

21- limited cover, 9- sealing element, 91- guide ring B, 92- dustband, 31-O shape circle,

32- boss, the first inner sleeve of 10- cylinder, 11- oil inlet 12- annular piston, 13- annular stop backing plate, 14- spacing top It covers A, 15- and limits top cover B.

Specific embodiment

The embodiment of the present application is by providing a kind of single-action multi-stage oil cylinder of the continuous milling machine with servo-actuated stroke, by multistage Setting one can follow transfer device to carry out the raised piston rod with servo-actuated stroke in the innermost layer inner sleeve cylinder of oil cylinder, avoid Oil cylinder, which occurs, can not be servo-actuated and oil cylinder is caused to draw high overtravel and be damaged.

In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper It states technical solution to be described in detail, it should be understood that the specific features in the utility model embodiment and embodiment are to this Shen Please technical solution detailed description, rather than the restriction to technical scheme, in the absence of conflict, the application are real The technical characteristic applied in example and embodiment can be combined with each other.

As shown in Fig. 1 ~ 3, a kind of continuous milling machine has the single-action multi-stage oil cylinder of servo-actuated stroke, including housing cylinder 1, Yi Jicong At least one inner sleeve cylinder 2 in nested housing cylinder 1 step by step outside to inside, 2 bottom end of inner sleeve cylinder of the innermost layer is fixedly connected with branch Fagging 3, the inner sleeve cylinder 2 is embedded to be cased with piston rod 4, is equipped with cavity 5 in the piston rod 4, the cavity 5 is by piston rod bottom end Face is axially extended to piston rod extension end, and the cavity 5 positioned at 4 extension end of piston rod is equipped with the venthole A6 outside connection.

Specifically, the present embodiment is illustrated using three-level oil cylinder, is successively covered from outside to inside in the housing cylinder 1 It is connected to the first inner sleeve cylinder 10, inner sleeve cylinder 2, the outer wall of the housing cylinder 1 is equipped with oil inlet 11, the connection of oil inlet 11 first Formation described in inner sleeve cylinder 10, inner sleeve cylinder 2 and support plate 3 without bar oil pocket, 10 bottom end outer wall of the first inner sleeve cylinder be equipped with one at The annular piston 12 of shape is equipped with guide ring on annular piston 12, and bolt is fixedly connected on 10 bottom end inner wall of the first inner sleeve cylinder There is annular stop backing plate 13,13 internal diameter of annular stop backing plate is less than the outer diameter of inner sleeve cylinder 2, to guarantee that inner sleeve cylinder 2 bounces back To the first inner sleeve cylinder 10 retraction when contacting with annular stop backing plate 13, is able to drive, the top bolt of the housing cylinder 1 is fixed with Top cover A14 is limited, limits and guide ring, K-type this spy's envelope, dustband is installed on the inner ring surface of top cover A14, limit top cover A14's First O-ring is installed on outer ring surface, the stroke of inner sleeve cylinder 2 can be limited while forming preferable sealing effect, Limit top cover B15 is formed on shown first inner sleeve cylinder, 10 top inner wall to limit 2 extended position of inner sleeve cylinder, it is described It limits and guide ring, K-type this spy's envelope, dustband is equally installed on the inner ring surface of top cover B15.

The inner sleeve cylinder 2 is embedded to be cased with piston rod 4, is equipped with cavity 5 in the piston rod 4, the cavity 5 is by piston rod bottom End face is axially extended to piston rod extension end, and the cavity 5 positioned at 4 extension end of piston rod is equipped with the venthole A6 outside connection, The venthole A6 is disposed radially.

Further, it is fixedly connected with air filtration valve 7 on the venthole A6, by connecting air mistake on venthole A Trap valve can prevent the large dust particle in working environment from air being followed to be inhaled into the cavity of piston rod together, cause piston Bar damage.

As shown in figure 3, the air filtration valve 7 includes fitting body 71, the fitting body bottom is threadingly attached to Stomata A6, the fitting body 71 are equipped at least two stomata B8 for axially penetrating through fitting body, are provide with outside the fitting body 71 There is copper filter screen 77, copper filter screen 77 can be glued in fitting body 71, can also pass through the fixedly connected remaining fitting body 1 of other locking modes On, by venthole A connect air filtration valve, can prevent the large dust particle in working environment follow air together by In the cavity of sucker bar, piston rod is caused to damage.

Further, the fitting body 71 is cylindrical, and 71 center of fitting body is equipped with tapped through hole 711, the copper Guide post 72, slide lid 74 are also covered in filter screen 77, the guide post 72 is threadingly attached to tapped through hole 711, institute It states and is arranged with down " convex " shape flexible rubber ring 73 in guide post 72, the flexible rubber ring 73 is set in 74 cavity of slide lid, The 73 major part external profile diameter of flexible rubber ring is more than or equal to 74 internal diameter of slide lid, top diameter is less than in the slide lid 74 Diameter, the 73 enlarged head lip of flexible rubber ring are bonded with 74 inner sidewall of slide lid, and the stomata B8 is set to 74 side plate of slide lid Between inner wall, 73 microcephaly's outer edge surface of flexible rubber ring, 74 center of slide lid is slided after passing through guide post 72 with guide post 72 Connection, 72 top of guide post is fixedly connected with pressing plate 75, spring 76,76 liang of the spring is arranged in the guide post 72 End pushes against 75 lower surface of pressing plate and 74 upper surface of slide lid respectively, so that 74 side plate bottom surface of the slide lid and fitting body 71 Top surface fitting, sets at the top of the slide lid 74 there are two venthole C741, is distributed in 72 two sides of guide post, the fitting body 71, Guide post 72, slide lid 74, flexible rubber ring 73 are coaxially disposed.

Fitting body is arranged cylindrical, facilitates the processing of fitting body, is equipped with tapped through hole at fitting body center, will be oriented to Column is threadingly attached to tapped through hole, and " convex " shape flexible rubber ring is arranged with down in guide post, the flexible rubber ring setting In in the slide lid cavity, it is small that the flexible rubber ring major part external profile diameter is more than or equal to the slide lid internal diameter, top diameter In the slide lid internal diameter, the stomata B is set between slide lid side plate inner wall, flexible rubber ring microcephaly's outer edge surface, described Slide lid center is slidably connected after passing through guide post with guide post, and the guiding top end is fixedly connected with pressing plate, the guiding Spring is arranged on column, the both ends of the spring pushes against the pressing plate lower surface and sliding cap upper surface, the sliding caping respectively Portion is equipped at least one venthole C, and the pressure when piston rod needs that transfer device is followed quickly to increase, in cavity may be implemented When being less than outside atmosphere pressure by force, air enters in slide lid cavity after passing through copper filter screen from stomata C, acts in atmospheric pressure Under, flexible rubber ring enlarged head lip overturns not to be bonded with slide lid side plate inner wall towards fitting body top surface, to make Body of bringing about the desired sensation can rapidly enter in inner cavity from stomata B, and when shuttle car advances, transfer device falls, and piston rod is in transfer device It is pushed back under the action of self gravity into inner sleeve cylinder, the gas in cavity can only overcome spring to cunning by pressure upon compression at this time It when the pressure of dynamic lid, is slowly flowed out from slide lid and the binding face of fitting body, prevents piston rod bottom end from carrying out to support plate strong Shock causes oil cylinder to damage, at the same can by adjust guide post be inserted into fitting body depth come adjustment spring to the pressure of slide lid Power, and then the falling speed of regulating piston bar.

Further, 73 material of flexible rubber ring is rubber.

Further, 4 bottom end of piston rod convexes to form stop collar 41, the 2 top diameter of inner sleeve cylinder radially outward To limited cover 21 is equipped with inwardly, the servo-actuated stroke of piston rod is limited.

Further, guide ring A411 is installed, the guide ring A411 is slidably connected on the anchor ring of the stop collar 41 Sealing element 9 is equipped between the inner wall of the inner sleeve cylinder 2,21 inner wall of limited cover and 4 outside wall surface of piston rod, it is described close Sealing 9 is installed on 21 inner wall of limited cover in mounting groove, the sealing element 9 include two guide ring B91 arranged side by side with And be set to the dustband 92 on 21 top of limited cover, can it is effectively rigid to piston rod and internal conflict between be sealed, while Effective dust in air enters the damage that inner sleeve cylinder causes inner sleeve cylinder.

Further, the support plate 3 is intercalated in 2 bottom end of inner sleeve cylinder, the support plate 3 in 2 bottom end of inner sleeve cylinder The intercalation face of wall is equipped with O-ring 31, and forming better seal effect prevents hydraulic fluid leak.

Further, 3 bottom surface of support plate is equipped with boss 32, and when oil cylinder is fully retracted into, the boss 32 pushes against described 1 bottom surface of housing cylinder.Enable when oil inlet hydraulic oil preferably to support plate, inner sleeve cylinder, housing cylinder be formed by rodless cavity into It advances oily.

As shown in figure 4, when the present embodiment is in use, after multistage hydraulic cylinder is fully extended, after shuttle car occurs again Collision transfer device is moved back, the cavity of piston rod is quickly sucked air and is stretched out by air filtration valve, so that servo-actuated movement is formed, After shuttle car leaves, transfer device back pressure piston rod, the gas in inner sleeve cylinder 2 has stepped through air filtration valve row by stomata A Out, avoid piston rod bottom end that strong hit occurs with support plate and oil cylinder is caused to damage.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model Claimed range is defined by the appending claims and its equivalent thereof.

Claims (9)

1. a kind of continuous milling machine has a single-action multi-stage oil cylinder of servo-actuated stroke, including housing cylinder (1) and embedding step by step from outside to inside Cover at least one inner sleeve cylinder (2) in housing cylinder (1), it is characterised in that: inner sleeve cylinder (2) bottom end of the innermost layer is fixedly connected Have support plate (3), the inner sleeve cylinder (2) is embedded to be cased with piston rod (4), is equipped with cavity (5) in the piston rod (4), the sky Chamber (5) is axially extended by piston rod bottom face to piston rod extension end, and the cavity (5) for being located at piston rod (4) extension end is equipped with Venthole A(6 outside connection).

2. the single-action multi-stage oil cylinder that a kind of continuous milling machine according to claim 1 has servo-actuated stroke, it is characterised in that: institute State venthole A(6) on be fixedly connected with air filtration valve (7).

3. the single-action multi-stage oil cylinder that a kind of continuous milling machine according to claim 2 has servo-actuated stroke, it is characterised in that: institute Stating air filtration valve (7) includes fitting body (71), and the fitting body bottom is threadingly attached to venthole A(6), the connector Body (71) is equipped at least one the stomata B(8 for axially penetrating through fitting body), fitting body (71) outer cup is equipped with copper filter screen (77).

4. the single-action multi-stage oil cylinder that a kind of continuous milling machine according to claim 3 has servo-actuated stroke, it is characterised in that: institute It is cylindrical to state fitting body (71), fitting body (71) center is equipped with tapped through hole (711), in the copper filter screen (77) also It is covered with guide post (72), slide lid (74), the guide post (72) is threadingly attached to tapped through hole (711), described to lead " convex " shape flexible rubber ring (73) is arranged with down on Xiang Zhu (72), the flexible rubber ring (73) is set to the slide lid (74) cavity Interior, flexible rubber ring (73) the major part external profile diameter is more than or equal to the slide lid (74) internal diameter, top diameter is less than the cunning Dynamic lid (74) internal diameter, flexible rubber ring (73) the enlarged head lip are bonded with slide lid (74) inner sidewall, the stomata B(8) it sets It is placed between slide lid (74) side plate inner wall, flexible rubber ring (73) microcephaly's outer edge surface, slide lid (74) center passes through and leads Xiang Zhu (72) is slidably connected with guide post (72) afterwards, and guide post (72) top is fixedly connected with pressing plate (75), the guiding It is arranged on column (72) spring (76), spring (76) both ends push against the pressing plate (75) lower surface and slide lid (74) respectively Upper surface is equipped at the top of the slide lid (74) so that the slide lid (74) side plate bottom surface is bonded with fitting body (71) top surface At least one venthole C(741).

5. the single-action multi-stage oil cylinder that a kind of continuous milling machine according to claim 4 has servo-actuated stroke, it is characterised in that: institute Stating flexible rubber ring (73) material is rubber.

6. the single-action multi-stage oil cylinder that a kind of continuous milling machine according to claim 1 has servo-actuated stroke, it is characterised in that: institute It states piston rod (4) bottom end to convex to form radially outward stop collar (41), inner sleeve cylinder (2) the top radial inward is equipped with limit It covers (21).

7. the single-action multi-stage oil cylinder that a kind of continuous milling machine according to claim 6 has servo-actuated stroke, it is characterised in that: institute State and guide ring A(411 be installed on the anchor ring of stop collar (41)), the guide ring A(411) it is slidably connected to the inner sleeve cylinder (2) inner wall is equipped with sealing element (9) between limited cover (21) inner wall and piston rod (4) outside wall surface, the sealing element (9) it is installed on limited cover (21) inner wall in mounting groove, the sealing element (9) includes two guide ring B arranged side by side (91) and it is set to the dustband (92) on limited cover (21) top.

8. the single-action multi-stage oil cylinder that a kind of continuous milling machine according to claim 1 has servo-actuated stroke, it is characterised in that: institute It states support plate (3) and is intercalated in inner sleeve cylinder (2) bottom end, on the intercalation face of the support plate (3) and inner sleeve cylinder (2) bottom end inner wall Equipped with O-ring (31).

9. the single-action multi-stage oil cylinder that a kind of continuous milling machine according to claim 1 has servo-actuated stroke, it is characterised in that: institute Support plate (3) bottom surface is stated equipped with boss (32), when oil cylinder is fully retracted into, the boss (32) pushes against housing cylinder (1) bottom surface.