CN209177917U - A kind of hydraulic jack - Google Patents

Abstract

The utility model discloses a kind of hydraulic jacks, it is the cylinder body of arc-shaped transition including outer end face, it is located at the intracorporal circular cylindrical cavity of cylinder, the plunger being located in cylindrical cavity body, it is located at the hydraulic circuit being connected on cylinder body with circular cylindrical cavity bottom, the shaft section of circular cylindrical cavity is U-shaped structure, the open end of circular cylindrical cavity is equipped with a locking nut, a limit hole being set on plunger is equipped in locking nut, plunger includes the drive section being located in cylindrical cavity body, the telescopic segment being located in drive section, drive section and circular cylindrical cavity are in excessively cooperation, telescopic segment passes through limit hole, telescopic segment and limit hole are in clearance fit, the outer side ring of drive section sets at least one circle clamping groove, clamping groove is equipped with a sealing ring, the two sides of cylinder body are additionally provided with a stationary plane, two stationary planes are set in parallel.It is able to solve radial positioning difficulty height and the high problem of axial dimension, structure is simple, and it is easy to operate, it is compact-sized, it is small in size and easy to carry.

Description

A kind of hydraulic jack

Technical field

The utility model relates to hydraulic jack fields, and in particular to a kind of hydraulic jack.

Background technique

Single-acting hydraulic jack at present, general appearance be all using round or ellipsoidal structure, when need to its into When row is radially fixed, since the arc-shaped structure of lateral surface causes positioning difficulty high, simultaneously as present hydraulic jack by It is more in axially mounted component, it is higher so as to cause whole height, it is also hydraulic during releasing liquid, it is typically also direct According to the rate of outflow retracted downward plunger of liquid, when trickle cannot control, the case where being easy to appear rapid decrease hair Raw and present jack disengaging fluid pipeline is generally cross-section structure, and there are moment is fast when so as to cause plunger decline Speed the case where falling, to be easy to cause safety accident, although and the jack inside that has also have spring buffer, spring Both ends typically just lean on raised rotary table to be positioned, the positioning accuracy of spring is low, and present very heavy top/bottom part does not have generally yet There is height limiting device, the initial position of plunger cannot be controlled.

Utility model content

A kind of hydraulic jack is provided in order to solve certain or certain technical problems, the utility model existing in the prior art Top is able to solve radial positioning difficulty height and the high problem of axial dimension, and structure is simple, easy to operate, compact-sized, small in size And it is easy to carry.

In order to solve the above-mentioned prior art problems, the utility model uses following scheme:

A kind of hydraulic jack, including outer end face be arc-shaped transition cylinder body, be located at the intracorporal cylindrical cavity of the cylinder Body, is located at the hydraulic oil being connected on the cylinder body with the circular cylindrical cavity bottom at the plunger being located in the cylindrical cavity body Road, the shaft section of the circular cylindrical cavity are U-shaped structure, and the open end of the circular cylindrical cavity is equipped with a locking nut, institute It states and is equipped with a limit hole being set on the plunger in locking nut, the plunger includes being located in the cylindrical cavity body Drive section, the telescopic segment that is located in the drive section, the drive section and the circular cylindrical cavity in excessively cooperation, it is described to stretch Contracting section passes through the limit hole, and the telescopic segment and the limit hole are in clearance fit, and the outer side ring of the drive section is set at least One circle clamping groove, the clamping groove are equipped with a sealing ring, and the two sides of the cylinder body are additionally provided with a stationary plane, and two described solid Determine face to be set in parallel.

Further, the hydraulic circuit includes being vertically set on adapter on the outside of the cylinder body, being located at the cylinder body Interior oil guide pipe, the oil guide pipe are in tilt down setting, one end of the oil guide pipe and the circular cylindrical cavity from outside to inside Bottom connection.

Further, the bottom part ring of the circular cylindrical cavity is equipped with one and encloses the oil-feed tank being recessed to its inside sidewalls, described One end of oil guide pipe is connected to the oil-feed tank, and the bottom part ring of the drive section is equipped with the permeable tank that a circle is recessed upwards, described Permeable tank is connected to the oil-feed tank.

Further, the oil guide pipe is in conical structure, and the big end opening of the oil guide pipe is located at the oil-feed tank At bottom comers.

Further, the outside of the cylinder body is equipped with a transfer hole, and the adapter is by being screwed at described turn It connects on hole, a caching chamber is equipped in the transfer hole, liquid passes through after the adapter is infused to the caching chamber again from described Oil guide pipe enters in the oil-feed tank.

Further, the open end of the circular cylindrical cavity is equipped with a helicla flute to lower recess, the locking nut It is embedded to be screwed in the helicla flute, it is equipped with a circle groove on the inner sidewall of the limit hole, is equipped in the groove O-shaped Circle, the limit hole are connect with the telescopic segment by the O-ring.

Further, the bottom of the drive section is equipped with a cushion chamber being recessed upwards, is equipped with one in the cushion chamber A buffer gear, the buffer gear include being located at the first boring cover at the top of the cushion chamber, being located at the circular cylindrical cavity bottom Second boring cover in portion, the buffer spring being located between the cushion chamber and circular cylindrical cavity, first boring cover and the second boring cover Lateral wall be equipped with the matched locating slot of the buffer spring, the both ends of the buffer spring are mounted on the locating slot It is interior.

Further, the bottom of the cylinder body is equipped with a unloading port, is equipped with a caging bolt, institute in the unloading port First boring cover is withstood in the one end for stating caging bolt, is additionally provided on first boring cover and contacts at the top of the caging bolt Elastic buffer washer.

Further, the shaft section of the clamping groove and the sealing ring is square structure, the lower end surface of the sealing ring Offer the dashpot being recessed upwards.

Further, the top of the telescopic segment is equipped with several non-slip grooves, and the non-slip groove uses concentric structure.

Compared with prior art, the utility model has the beneficial effects that:

It is sealed between circular cylindrical cavity and plunger by locking nut, so that the inner cavity of circular cylindrical cavity be made to form one Closing chamber is located in cylindrical cavity body due to the drive section of plunger and is cooperated using excessive, radial fixed when plunger is stretched Position precision is higher, and better tightness, and passes through clamping groove again in the lateral wall of drive section and be mounted with a sealing ring, passes through Sealing ring and the dual-seal excessively cooperated can make circular cylindrical cavity form two seal chambers up and down with sealing ring line of demarcation Body, and hydraulic circuit is connected to circular cylindrical cavity bottom, when liquid injects circular cylindrical cavity from hydraulic circuit, liquid will not be to Cavity infiltration in cylindrical cavity body more than sealing ring, thus keep liquid bigger to the upper top active force of plunger, jack To carry active force bigger, meanwhile, be additionally provided with a stationary plane in the two sides of the cylinder body, two stationary planes are in parallel Setting, when needing that jack radial position is fixed, only need to by other tools or object to two stationary planes into Row clamps, it will be able to effectively prevent entire jack from occurring mobile situation in the process of work and occur, jack is made to exist Safer when use, effective solution jack radial positioning difficulty height and the high problem of axial dimension, structure is simple, behaviour Make simplicity, it is compact-sized, it is small in size and easy to carry.

Detailed description of the invention

Fig. 1 is the complete section main view of the utility model；

Fig. 2 is the top view of the utility model.

In figure: hydraulic circuit 1, adapter 2, transfer hole 3, cylinder body 4, caching chamber 5, limit hole 6, elastic buffer washer 7, the One boring cover 8, non-slip groove 9, telescopic segment 10, locking nut 11, O-ring 12, groove 13, plunger 14, circular cylindrical cavity 15, locating slot 16, drive section 17, sealing ring 18, dashpot 19, permeable tank 20, cushion chamber 21, the second boring cover 22, unloading port 23, caging bolt 24, buffer gear 25, oil-feed tank 26, clamping groove 27, oil guide pipe 28, buffer spring 29, helicla flute 30, stationary plane 31.

Specific embodiment

In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new Embodiment.

As depicted in figs. 1 and 2, a kind of hydraulic jack, including cylinder body 4 that outer end face is arc-shaped transition, be located at it is described Circular cylindrical cavity 15 in cylinder body 4, is located on the cylinder body 4 and the circle plunger 14 being located in the circular cylindrical cavity 15 The hydraulic circuit 1 of 15 bottom of cylindrical chamber connection, the shaft section of the circular cylindrical cavity 15 are U-shaped structure, the cylindrical cavity The open end of body 15 is equipped with a locking nut 11, is equipped with a limit being set on the plunger 14 in the locking nut 11 Position hole 6, the plunger 14 include the drive section 17 being located in the circular cylindrical cavity 15, are located at stretching in the drive section 17 Section 10, for the drive section 17 with the circular cylindrical cavity 15 in excessively cooperation, the telescopic segment 10 passes through the limit hole 6, institute Telescopic segment 10 and the limit hole 6 are stated in clearance fit, the outer side ring of the drive section 17 sets at least one circle clamping groove 27, described Clamping groove 27 is equipped with a sealing ring 18, and the two sides of the cylinder body 4 are additionally provided with a stationary plane 31, and two stationary planes 31 are in It is arranged in parallel；The hydraulic circuit 1 includes the adapter 2 for being vertically set on 4 outside of cylinder body, is located in the cylinder body 4 Oil guide pipe 28, the oil guide pipe 28 are in tilt down setting from outside to inside, one end of the oil guide pipe 28 and the cylindrical cavity The bottom of body 15 is connected to；The bottom part ring of the circular cylindrical cavity 15 is equipped with one and encloses the oil-feed tank 26 being recessed to its inside sidewalls, institute The one end for stating oil guide pipe 28 is connected to the oil-feed tank 26, and the bottom part ring of the drive section 17 is equipped with the infiltration that a circle is recessed upwards Slot 20, the permeable tank 20 are connected to the oil-feed tank 26；The oil guide pipe 28 be in conical structure, the oil guide pipe 28 it is big It is located at 26 bottom comers of oil-feed tank at end opening；The outside of the cylinder body 4 is equipped with a transfer hole 3, the adapter 2 By being screwed in the transfer hole 3, a caching chamber 5 is equipped in the transfer hole 3, liquid passes through the adapter 2 Enter in the oil-feed tank 26 from the oil guide pipe 28 again after infusing the caching chamber 5；The open end of the circular cylindrical cavity 15 Helicla flute 30 equipped with one to lower recess, the locking nut 11 is embedded to be screwed in the helicla flute 30, the limit It is equipped with a circle groove 13 on the inner sidewall in hole 6, O-ring 12, the limit hole 6 and the telescopic segment are equipped in the groove 13 10 are connected by the O-ring 12；The bottom of the drive section 17 is equipped with a cushion chamber 21 being recessed upwards, the cushion chamber A buffer gear 25 is equipped in 21, the buffer gear 25 includes the first boring cover 8 for being located at 21 top of cushion chamber, is located at Second boring cover 22 of 15 bottom of circular cylindrical cavity, the buffer spring being located between the cushion chamber 21 and circular cylindrical cavity 15 29, the lateral wall of first boring cover 8 and the second boring cover 22 be equipped with the matched locating slot 16 of the buffer spring 29, it is described The both ends of buffer spring 29 are mounted in the locating slot 16；The bottom of the cylinder body 4 is equipped with a unloading port 23, the unloading A caging bolt 24 is equipped in hole 23, first boring cover 8, first boring cover 8 are withstood in one end of the caging bolt 24 On be additionally provided with the elastic buffer washer 7 contacted at the top of the caging bolt 24；The clamping groove 27 and the sealing ring 18 Shaft section is square structure, and the lower end surface of the sealing ring 18 offers the dashpot being recessed upwards 19；The telescopic segment 10 top is equipped with several non-slip grooves 9, and the non-slip groove 9 uses concentric structure.

In actual use, the upper end opening of circular cylindrical cavity 15, and pass through locking between open end and plunger 14 Nut 11 seals, to make the inner cavity of circular cylindrical cavity 15 form a closing chamber, since the drive section 17 of plunger 14 is located at In circular cylindrical cavity 15 and using excessively cooperation, when plunger 14 is stretched, radial positioning precision is higher, and leakproofness is more It is good, and pass through clamping groove 27 again in the lateral wall of drive section 17 and be mounted with a sealing ring 18, by sealing ring 18 and excessively The dual-seal of cooperation can make circular cylindrical cavity 15 form two seal cavities, and liquid up and down with 18 line of demarcation of sealing ring Pressure oil road 1 is connected to 15 bottom of circular cylindrical cavity, and when liquid injects circular cylindrical cavity 15 from hydraulic circuit 1, liquid will not be to It is permeated in circular cylindrical cavity 15 positioned at the cavity of 18 or more sealing ring, thus keep liquid bigger to the upper top active force of plunger 14, Jack to carry active force bigger, meanwhile, be additionally provided with a stationary plane 31 in the two sides of the cylinder body 4, two are described solid Determine face 31 to be set in parallel, when needing that jack radial position is fixed, need to only pass through other tools or object pair Two stationary planes 31 are clamped, it will be able to effectively prevent entire jack from occurring mobile situation hair in the process of work It is raw, keep jack safer when in use, using this structure, additionally it is possible to be jack whole height it is lower, effectively Solve the problems, such as that jack radial positioning difficulty height and axial dimension are high, structure is simple, easy to operate, compact-sized, volume It is small and easy to carry, when need to jack carry out in use, jack need to be only placed into the lower end of object to be jacked up, so Liquid is injected by hydraulic circuit 1 to the bottom of circular cylindrical cavity 15 afterwards, drive section can be made by the injection rate of liquid 17 move up, so that telescopic segment 10 be made to move up to rise object along limit hole 6, play the role of jack, when It does not need that internal fluid pressure is made in use, only need to not internally inject liquid to be greater than external injection pressure, it will be able to make The liquid of circular cylindrical cavity 15 is flowed outwardly along former road, and locking nut 11 is screwed on using screw thread, and structure is embedded to be fixed on cylinder In the helicla flute 30 of the upper end of shape cavity 15, the height of entire jack can be made lower, upper surface is more smooth, and the limit Position hole 6 connect sealing by the O-ring 12 with the telescopic segment 10, can either guarantee the lateral wall finish of telescopic segment 10, The effect of cavity sealing can be played again, and the simpler convenience of structure, the fixation of O-ring 12 are stronger.

Meanwhile a dismountable adapter 2 being installed on the outside of the cylinder body 4, adapter 2 is transferred by transfer hole 3, Liquid is accessed by adapter 2, and the scope of application is wider, and different adapters 2, replacement cost can be replaced according to different occasions It is lower, and the oil guide pipe 28 is in tilt down setting from outside to inside, one end of oil guide pipe 28 and the circular cylindrical cavity 15 Bottom connection, compared to other structures, can make stroke of the liquid in oil guide pipe 28 shorter, and the oil guide pipe 28 is in circular cone The big end opening of shape structure, the oil guide pipe 28 is located at 26 bottom comers of oil-feed tank, when plunger 14 needs to receive downwards More slowly, safety is higher for speed when contracting, and instant outer end has conveyance conduit to damage, and can also guarantee circular cylindrical cavity 15 Internal liquid disposably will not be flowed outwardly quickly, enable people to that there are more times to carry out emergency processing.And turning Connect and be additionally provided with a caching chamber 5 in hole 3, liquid pass through 2 note of adapter to the caching chamber 5 after again from the oil guide pipe 28 Into in the oil-feed tank 26, liquid can be made more to mitigate when injecting oil guide pipe 28, there is no bubbles for the liquid of injection The case where occur.

Further, one is equipped in the bottom part ring of circular cylindrical cavity 15 enclose the oil-feed tank 26 being recessed to its inside sidewalls, into Oil groove 26 is coaxially disposed with circular cylindrical cavity 15 and diameter is bigger, and the bottom part ring of drive section 17 is equipped with the infiltration that a circle is recessed upwards Through groove 20, permeable tank 20 are also coaxially disposed with circular cylindrical cavity 15, and the permeable tank 20 is connected to the oil-feed tank 26, work as liquid Oil-feed tank 26 can be filled up when injecting by oil guide pipe 28 first, while resynchronisation penetrates into permeable tank 20, passes through permeable tank Liquid in 20 carries out uniform ejection upwards to the drive section 17 of plunger 14, and the upward active force of bottom is more equal when ejection Even, the stretch stability of plunger 14 is higher.

Preferably, in order to avoid plunger 14 is in hydraulic disappearance or too small and hurtle down and generate directly to cylinder body 4 It hits, a buffer gear 25 is mounted in the bottom of plunger 14, and when installing to buffer gear 25, by driving The bottom of section 17 forms a cushion chamber 21 being recessed upwards and is installed, and the whole height of entire jack can be made to be had The reduction of effect, and in buffering, mainly being buffered by buffer spring 29, structure is simpler, and cost is lower, and slow It rushes at the top of chamber 21 and first boring cover 8 is installed, one the second boring cover 22, buffering are installed in 15 bottom of circular cylindrical cavity The both ends of spring 29 carry out radial limit by the first boring cover 8 and the second boring cover 22, while in the first boring cover 8 and the second boring cover 22 Lateral wall on be additionally provided with and the matched locating slot 16 of the buffer spring 29, the both ends installation by adhering of the buffer spring 29 In the locating slot 16, in use, can the both ends of buffer spring 29 be carried out with accurate firm limit and fixed, made The positioning accuracy of buffer spring 29 is higher, and when buffering is more steady.

Further, it is equipped with a unloading port 23 in the bottom of cylinder body 4, and the unloading port 23 passes through one to buffering The deep caging bolt 24 in 21 inside of chamber seals, and can be emptied inside circular cylindrical cavity 15 by the disassembly sealing of caging bolt 24 Liquid can also be adjusted the height and position of plunger 14 by adjusting caging bolt 24, and be additionally provided on the first boring cover 8 The elastic buffer washer 7 contacted at the top of the caging bolt 24, when plunger 14 due to upward hydraulic disappearance or it is too small and When hurtling down, the bottom of plunger 14 is first contacted with elastic buffer washer 7, thus effectively prevent plunger 14 directly with cylinder body 4 Inside generates the case where hitting, and making jack, the service life is longer.

Preferably, the shaft section of the clamping groove 27 and the sealing ring 18 is square structure, after fixation mutual position Set it is more accurate, the case where being not in rotation or be displaced, at the same the lower end surface of sealing ring 18 offer one to The open end of the dashpot 19 of upper recess, dashpot 19 is contacted with the bottom surface of clamping groove 27, when drive section 17 moves up and down When, if sealing ring 18 can be such that sealing ring 18 is shunk to dashpot 19 there are in the case where overtension, to reduce The whole size of sealing ring 18 makes drive section 17 when upper and lower flexible, can either guarantee flexible flexibility, and can guarantee to justify The leakproofness of 15 lower end cavity of cylindrical chamber；And several non-slip grooves 9, the non-slip groove are equipped on the top of the telescopic segment 10 9 use concentric structure, and when telescopic segment 10 is contacted with object, antiskid effect is more preferable, and use is safer.

Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to In the utility model range claimed.

Claims (10)

1. a kind of hydraulic jack, it is characterised in that: including cylinder body that outer end face is arc-shaped transition, to be located at the cylinder intracorporal Circular cylindrical cavity, the plunger being located in the cylindrical cavity body are located on the cylinder body and are connected to the circular cylindrical cavity bottom Hydraulic circuit, the shaft section of the circular cylindrical cavity is U-shaped structure, and the open end of the circular cylindrical cavity is equipped with a locking Nut, the locking nut is interior to be equipped with a limit hole being set on the plunger, and the plunger includes being located at the cylinder Shape chamber intracorporal drive section, the telescopic segment that is located in the drive section, the drive section and the circular cylindrical cavity are in excessively matching It closes, the telescopic segment passes through the limit hole, and the telescopic segment and the limit hole are in clearance fit, the outside of the drive section Ring sets at least one circle clamping groove, and the clamping groove is equipped with a sealing ring, and the two sides of the cylinder body are additionally provided with a stationary plane, and two A stationary plane is set in parallel.

2. a kind of hydraulic jack according to claim 1, it is characterised in that: the hydraulic circuit includes being vertically set on Adapter on the outside of the cylinder body is located at the intracorporal oil guide pipe of the cylinder, the oil guide pipe in tilting down setting from outside to inside, One end of the oil guide pipe is connected to the bottom of the circular cylindrical cavity.

3. a kind of hydraulic jack according to claim 2, it is characterised in that: the bottom part ring of the circular cylindrical cavity is equipped with One encloses the oil-feed tank being recessed to its inside sidewalls, and one end of the oil guide pipe is connected to the oil-feed tank, the bottom of the drive section Portion is equipped with the permeable tank that a circle is recessed upwards, and the permeable tank is connected to the oil-feed tank.

4. a kind of hydraulic jack according to claim 3, it is characterised in that: the oil guide pipe is in conical structure, institute The big end opening for stating oil guide pipe is located at the oil-feed tank bottom comers.

5. a kind of hydraulic jack according to claim 3, it is characterised in that: the outside of the cylinder body is equipped with a switching Hole, the adapter are equipped with a caching chamber by being screwed in the transfer hole in the transfer hole, liquid passes through institute Enter in the oil-feed tank from the oil guide pipe again after stating adapter note to the caching chamber.

6. a kind of hydraulic jack according to claim 1, it is characterised in that: the open end of the circular cylindrical cavity is equipped with One helicla flute to lower recess, the locking nut is embedded to be screwed in the helicla flute, the inner sidewall of the limit hole On be equipped with a circle groove, O-ring is equipped in the groove, the limit hole is connect with the telescopic segment by the O-ring.

7. described in any item a kind of hydraulic jacks according to claim 1~6, it is characterised in that: the bottom of the drive section The cushion chamber being recessed upwards equipped with one, the cushion chamber is interior to be equipped with a buffer gear, and the buffer gear includes being located at institute It states the first boring cover at the top of cushion chamber, the second boring cover for being located at the circular cylindrical cavity bottom, be located at the cushion chamber and cylinder The lateral wall of buffer spring between shape cavity, first boring cover and the second boring cover is equipped with matched with the buffer spring Locating slot, the both ends of the buffer spring are mounted in the locating slot.

8. a kind of hydraulic jack according to claim 7, it is characterised in that: the bottom of the cylinder body is equipped with a unloading Hole, the unloading port is interior to be equipped with a caging bolt, and first boring cover is withstood in one end of the caging bolt, and described first is bored Cover the elastic buffer washer for being additionally provided with and contacting at the top of the caging bolt.

9. a kind of hydraulic jack according to claim 1, it is characterised in that: the axis of the clamping groove and the sealing ring Section is square structure, and the lower end surface of the sealing ring offers the dashpot being recessed upwards.

10. a kind of hydraulic jack according to claim 1, it is characterised in that: if the top of the telescopic segment is equipped with Dry non-slip groove, the non-slip groove use concentric structure.