CN203978999U - Can bear larger side to the hydraulic jack of pressure - Google Patents
Can bear larger side to the hydraulic jack of pressure Download PDFInfo
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- CN203978999U CN203978999U CN201420459117.1U CN201420459117U CN203978999U CN 203978999 U CN203978999 U CN 203978999U CN 201420459117 U CN201420459117 U CN 201420459117U CN 203978999 U CN203978999 U CN 203978999U
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- piston
- piston rod
- cylinder
- described piston
- cylinder barrel
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Abstract
The utility model discloses a kind of larger side that bears to the hydraulic jack of pressure, comprise piston rod, piston, cylinder barrel and two cylinder sleeves; Two cylinder sleeves comprise the first cylinder sleeve and the second cylinder sleeve, and two cylinder sleeves are individually fixed in the two ends, left and right of cylinder barrel; Cylinder sleeve is sheathed on the outer circumferential face of cylinder barrel; Within piston is arranged at cylinder barrel, within piston rod is inserted in piston and with piston, be fixedly connected with; The end of one end away from piston of piston rod stretches out in outside cylinder sleeve; On the outer circumferential face of piston rod, be provided with the first half slot, on the inner peripheral surface of piston, be provided with the second half slot; The first half slot of piston rod and the second half slot of piston fasten the annular groove that forms a ring mutually; Within annular groove, be provided with a plurality of steel balls.The larger side that bears of the present utility model, to the hydraulic jack of pressure, has the advantages such as safety reliability from larger side to pressure that can avoid the uneven wear of piston, the operating life that improves oil cylinder, the operation of raising oil cylinder when being subject to.
Description
Technical field
The utility model relates to a kind of larger side that bears to the hydraulic jack of pressure.
Background technique
Steering cylinder is the hydraulic jack changing for direction conventional in engineering machinery.At present, the steering cylinder of engineering machinery, because it needs to bear larger lateral force at work, is the more a kind of oil cylinder of Accident due to quality in all engineering oil cylinders always.The main cause that occurs Accident due to quality is: between the piston of general oil cylinder and piston rod with being threaded or welding, this piston while making piston rod or cylinder barrel be subject to lateral force that is rigidly connected can press on one side, cause piston and liner packing part uneven wear, in occurring, leak or leak outside.When serious, piston metal seamed edge contacts with inner wall of cylinder, occurs that inner wall of cylinder pulls, and causes oil cylinder inefficacy.
Model utility content
The utility model is the deficiency existing in above-mentioned prior art for avoiding, provide a kind of larger side that bears to the hydraulic jack of pressure, to solve piston that in prior art, oil cylinder easily causes when bearing from larger side to pressure and the problem of liner packing part uneven wear.
The utility model be technical solution problem by the following technical solutions.
Can bear larger side to the hydraulic jack of pressure, its structural feature is to comprise piston rod, piston, cylinder barrel and two cylinder sleeves; Described two cylinder sleeves comprise the first cylinder sleeve and the second cylinder sleeve, and described the first cylinder sleeve and described the second cylinder sleeve are individually fixed in the two ends, left and right of described cylinder barrel, and by the left and right closed at both ends of described cylinder barrel; Described cylinder sleeve is sheathed on the outer circumferential face of end at described cylinder barrel two ends; Within described piston is arranged at described cylinder barrel, within described piston rod is inserted in described piston and with described piston, be connected; The end of one end away from described piston of described piston rod stretches out in outside described cylinder sleeve;
On the outer circumferential face of described piston rod, be provided with a circle along circumferential extension semicircular first half slot of a week of described piston rod, on the inner peripheral surface of piston, be provided with a circle along circumferential extension semicircular second half slot of a week of described piston; In the time of within described piston rod is installed on described piston, the first half slot of described piston rod and the second half slot of described piston fasten the annular groove that forms a ring mutually; Within described annular groove, be provided with a plurality of steel balls.
The larger side that bears of the present utility model is also to the structural feature of the hydraulic jack of pressure:
Described born larger side also comprises two locking rings to the hydraulic jack of pressure; Described two locking rings are arranged at the two ends, left and right of described cylinder barrel, and within one end of described locking ring is inserted in described cylinder barrel, the outer circumferential face of the other end of described locking ring matches with the inner peripheral surface of described cylinder sleeve; Described locking ring together with described cylinder sleeve by the left and right closed at both ends of described cylinder barrel.
On described piston, offer one along the circular hole (11) of the extension that radially runs through described piston of described piston, described circular hole (11) is connected with the second half slot of described piston.
The first half slot of described piston rod and the second half slot of described piston fasten the diameter of annular groove of formation mutually than the large 0.3mm to 0.6mm of the diameter of described steel ball.
Coordinating between described piston rod and described piston is Spielpassung, and the gap between described piston rod and described piston is between 0.28mm to 0.37mm.
Described piston rod and piston adopt the structure of single piston double piston-rod; The end at the two ends of described piston rod all stretches out in outside the described cylinder sleeve at cylinder barrel two ends.
Compared with the prior art, the utility model beneficial effect is embodied in:
The larger side that bears of the present utility model, to the hydraulic jack of pressure, can be used as the steering cylinder of engineering machinery, piston seal and cylinder barrel uneven wear problem when having solved in design oil cylinder and being subject to lateral force.The larger side that bears of the present utility model comprises the parts such as cylinder barrel, end cap, piston rod, piston, locating slot, steel ball to the hydraulic jack of pressure.Cylinder sleeve is coaxially arranged on the outer two ends of cylinder barrel, and piston rod is coaxially arranged in cylinder barrel inner cylinder liner, and piston is fixed on the specified position of cylinder barrel inner piston rod.
(1) piston is fixedly by a plurality of steel balls location, on piston rod, by neutral position, is provided with semicircular the first half slot, and piston inner hole is provided with semicircular second half slot too.When piston is mounted on piston rod specified position, two halves circular groove is merged into a circular ring slot.The top of the second half slot on piston is provided with a circular hole, can add steel ball to annular groove at this circular hole place, can realize a kind of special Placement of utilizing a plurality of steel balls location between piston and piston rod.
(2) between piston and piston rod, be provided with certain gap, when cylinder barrel and piston rod are subject to lateral force, the distortion that this gap can compensating piston bar, the generation of uneven wear when effectively reducing oil cylinder and being subject to lateral force.
(3) cylinder sleeve at cylinder barrel two ends adopts locking ring structure, makes two ends cylinder sleeve and piston all take inner wall of cylinder as reference for installation, reduces coaxiality error.
The larger side that bears of the present utility model, to the hydraulic jack of pressure, has the advantages such as safety reliability from larger side to pressure that can avoid the uneven wear of piston, the operating life that improves oil cylinder, the operation of raising oil cylinder when being subject to.
Accompanying drawing explanation
Fig. 1 is that the larger side that bears of the present utility model is to the sectional view of the hydraulic jack of pressure.
The sectional view of Fig. 2 when to be born larger side in Fig. 1 stressed in the course of the work to the hydraulic jack of pressure.
Label in accompanying drawing 1～accompanying drawing 2: 1 piston rod, 2 locking rings, 3 first cylinder sleeves, 4 cylinder barrels, 5 screws, 6 steel balls, 7 pistons, 8 second cylinder sleeves, 9 first half slots, 10 second half slots, 11 circular holes.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Referring to figure accompanying drawing 1～accompanying drawing 2, can bear larger side and comprise piston rod 1, piston 7, cylinder barrel 4 and two cylinder sleeves to the hydraulic jack of pressure; Described two cylinder sleeves comprise the first cylinder sleeve 3 and the second cylinder sleeve 8, and described the first cylinder sleeve 3 and described the second cylinder sleeve 8 are individually fixed in the two ends, left and right of described cylinder barrel 4, and by the left and right closed at both ends of described cylinder barrel 4; Described cylinder sleeve is sheathed on the outer circumferential face of end at described cylinder barrel 4 two ends; Within described piston 7 is arranged at described cylinder barrel 4, within described piston rod 1 is inserted in described piston 7 and with described piston 7, be connected; The end of one end away from described piston 7 of described piston rod 1 stretches out in outside described cylinder sleeve;
On the outer circumferential face of described piston rod 1, be provided with a circle along circumferential extension semicircular first half slot 9 of a week of described piston rod 1, on the inner peripheral surface of piston 7, be provided with a circle along circumferential extension semicircular second half slot 10 of a week of described piston 7; In the time of within described piston rod 1 is installed on described piston 7, the first half slot 9 of described piston rod 1 fastens with the second half slot 10 of described piston 7 annular groove that forms a ring mutually; Within described annular groove, be provided with a plurality of steel balls 6.
Can bear larger side and also comprise two locking rings 2 to the hydraulic jack of pressure; Described two locking rings 2 are arranged at the two ends, left and right of described cylinder barrel 4, and within one end of described locking ring 2 is inserted in described cylinder barrel 4, the outer circumferential face of the other end of described locking ring 2 matches with the inner peripheral surface of described cylinder sleeve; Described locking ring 2 together with described cylinder sleeve by the left and right closed at both ends of described cylinder barrel 4.
On described piston 7, offer one along the circular hole 11 of the extension that radially runs through described piston 7 of described piston 7, described circular hole 11 is connected with the second half slot 10 of described piston 7.
The diameter that the second half slot 10 of the first half slot 9 of described piston rod 1 and described piston 7 fastens the annular groove forming is mutually than the large 0.3mm to 0.6mm of the diameter of described steel ball 6.
Coordinating between described piston rod 1 and described piston 7 is Spielpassung, and the gap between described piston rod 1 and described piston 7 is between 0.28mm to 0.37mm.
Described piston rod 1 and piston 7 adopt the structure of single piston double piston-rod; The end at the two ends of described piston rod 1 all stretches out in outside the described cylinder sleeve at cylinder barrel 4 two ends.
Cylinder sleeve is arranged on the two ends of cylinder barrel, and it is to utilize locking ring 3 to lock, and piston rod 1 is coaxially arranged in cylinder barrel 4 inner cylinder liners 3, and piston 7 is fixed on piston rod and leans on neutral position, utilizes a plurality of steel balls 6 to position.
Piston 7 is provided with a circular hole, can place steel ball 6 in this hole and enter locating slot, is tightening afterwards with screw 5.On piston 7, be provided with in addition second half slot, first half slot too on the piston rod 1 of answering in contrast, when piston 7 is contained on piston rod 1 specified position, it is circular annular groove that these two half slots can synthesize a section, can be referred to as locating slot.Steel ball 6 is being entered to locating slot along the stopple of piston 7, while fill steel ball 6 rotary-pistons 7, so that fill steel ball 6 in whole locating slot, the diameter of this locating slot is larger than the diameter of steel ball 6.Piston 7 has certain gap with between piston rod 1, the distortion while can compensating piston bar 1 being subject to lateral pressure.The cylinder sleeve at cylinder barrel 4 two ends utilizes locking ring 3 to pin, and making two ends cylinder sleeve and piston 7 all take cylinder barrel 4 inwalls is reference for installation, has reduced coaxiality error.
The annular groove that two halves circular groove is synthetic, the diameter of above-mentioned locating slot, than the large 0.3mm of the diameter of steel ball between 0.6mm, is realized piston 7 with the location between piston rod 1.
Piston 7 is that 0.28mm is between 0.37mm with the gap between piston rod 1.
The installation of cylinder sleeve adopts locking ring structure, and making two ends cylinder sleeve and piston 7 all take cylinder barrel 4 inwalls is reference for installation, reduces coaxiality error.
The piston rod of oil cylinder piston when bearing lateral pressure, with the gap distortion of compensating piston bar fully between piston rod, adopts piston to follow the gap of piston rod between 0.28mm to 0.37mm after repetition test.
Specifically: for piston is followed between piston rod, can well locate, can guarantee again that piston can be free to rotation along locating slot on piston rod simultaneously, through repetition test, the diameter of locating slot is than between the large 0.3mm to 0.6mm of the diameter of steel ball.
In addition, what the utility model oil cylinder adopted is the structure of single piston double piston-rod, what cylinder sleeve adopted is locking ring structure, cylinder sleeve is contained in cylinder barrel two ends and adopts locking ring locking, piston rod is contained in cylinder barrel with between cylinder sleeve, piston utilizes a plurality of steel balls to be positioned at piston rod by neutral position, and piston can rotate freely simultaneously.
As Fig. 1, the structure that the utility model hydraulic jack can bear lateral pressure is arranged on piston rod 1 with between piston 7, first be that piston rod 1 is with the Placement of piston 7, structure adopts the mode of a plurality of steel balls 6 location, at piston 7, with on piston rod 1, a semi-circular groove is respectively set, synthetic whole circular trough is than the large 0.3mm to 0.6mm of the diameter of steel ball, by steel ball, the stopple on piston enters in locating slot, tighten screw, complete piston with the connection between piston rod, this setting is different from conventional oil cylinder, this piston can rotate freely on piston rod, at piston, with between piston rod, leave between the 0.28mm to 0.37mm of gap simultaneously, this gap can be out of shape by the piston rod of compensating piston bar when being subject to lateral force.Cylinder sleeve adopts locking ring structure, reduces coaxiality error.
Fig. 2 is that the utility model can bear larger side to pressure hydraulic jack work schematic diagram, when hydraulic fluid port A oil-feed, control piston bar moves right, hydraulic fluid port B is oil outlet, when hydraulic fluid port B oil-feed, control piston bar is to left movement, and hydraulic fluid port A is oil outlet, control piston bar left and right to-and-fro motion like this, completes the turning function of engineering machinery.When piston rod movement is during to working position as shown in Figure 2, if piston rod left side is subject to downward lateral force F1, piston rod right side is subject to lateral force F2 upwards, general cylinder piston rod there will be flexural buckling at piston rod in such cases, can cause piston to follow the Sealing on cylinder sleeve to occur uneven wear, thereby destroy the sealability of oil cylinder, cause the damage of oil cylinder, in this model utility, as shown in the figure, at piston, with between piston rod, leave between the 0.28mm to 0.37mm of gap, this gap is the distortion of compensating piston bar just in time, at piston, follow the orientation type that adopts a plurality of steel balls between piston rod simultaneously, in oil cylinder running, piston can rotate freely again, after having chosen suitable Sealing, can effectively reduce so the monolateral damage situations of Sealing, thereby improved the working life of oil cylinder.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (6)
1. can bear larger side to the hydraulic jack of pressure, it is characterized in that, comprise piston rod (1), piston (7), cylinder barrel (4) and two cylinder sleeves; Described two cylinder sleeves comprise the first cylinder sleeve (3) and the second cylinder sleeve (8), described the first cylinder sleeve (3) and described the second cylinder sleeve (8) are individually fixed in the two ends, left and right of described cylinder barrel (4), and by the left and right closed at both ends of described cylinder barrel (4); Described cylinder sleeve is sheathed on the outer circumferential face of end at described cylinder barrel (4) two ends; Within described piston (7) is arranged at described cylinder barrel (4), within described piston rod (1) is inserted in described piston (7) and with described piston (7), be connected; The end of one end away from described piston (7) of described piston rod (1) stretches out in outside described cylinder sleeve;
On the outer circumferential face of described piston rod (1), be provided with a circle along circumferential extension semicircular first half slot (9) of a week of described piston rod (1), on the inner peripheral surface of piston (7), be provided with a circle along circumferential extension semicircular second half slot (10) of a week of described piston (7); In the time of within described piston rod (1) is installed on described piston (7), first half slot (9) of described piston rod (1) fastens with second half slot (10) of described piston (7) annular groove that forms a ring mutually; Within described annular groove, be provided with a plurality of steel balls (6).
2. the larger side that bears according to claim 1, to the hydraulic jack of pressure, is characterized in that, also comprises two locking rings (2); Described two locking rings (2) are arranged at the two ends, left and right of described cylinder barrel (4), within one end of described locking ring (2) is inserted in described cylinder barrel (4), the outer circumferential face of the other end and the inner peripheral surface of described cylinder sleeve of described locking ring (2) match; Described locking ring (2) together with described cylinder sleeve by the left and right closed at both ends of described cylinder barrel (4).
3. the larger side that bears according to claim 1 is to the hydraulic jack of pressure, it is characterized in that, on described piston (7), offer one along the circular hole (11) of the extension that radially runs through described piston (7) of described piston (7), described circular hole (11) is connected with second half slot (10) of described piston (7).
4. the larger side that bears according to claim 1 is to the hydraulic jack of pressure, it is characterized in that, the diameter that first half slot (9) of described piston rod (1) and second half slot (10) of described piston (7) fasten the annular groove forming is mutually than the large 0.3mm to 0.6mm of diameter of described steel ball (6).
5. the larger side that bears according to claim 1 is to the hydraulic jack of pressure, it is characterized in that, coordinating between described piston rod (1) and described piston (7) is Spielpassung, and the gap between described piston rod (1) and described piston (7) is between 0.28mm to 0.37mm.
6. the larger side that bears according to claim 1, to the hydraulic jack of pressure, is characterized in that, described piston rod (1) and piston (7) adopt the structure of single piston double piston-rod; The end at the two ends of described piston rod (1) all stretches out in outside the described cylinder sleeve at cylinder barrel (4) two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459117.1U CN203978999U (en) | 2014-08-13 | 2014-08-13 | Can bear larger side to the hydraulic jack of pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459117.1U CN203978999U (en) | 2014-08-13 | 2014-08-13 | Can bear larger side to the hydraulic jack of pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978999U true CN203978999U (en) | 2014-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420459117.1U Expired - Fee Related CN203978999U (en) | 2014-08-13 | 2014-08-13 | Can bear larger side to the hydraulic jack of pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203978999U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930996A (en) * | 2017-04-21 | 2017-07-07 | 西安电子工程研究所 | A kind of hydraulic cylinder for fixed mechanism |
| CN113847301A (en) * | 2021-09-18 | 2021-12-28 | 湖北航天技术研究院总体设计所 | Lateral force resistant oil cylinder |
-
2014
- 2014-08-13 CN CN201420459117.1U patent/CN203978999U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930996A (en) * | 2017-04-21 | 2017-07-07 | 西安电子工程研究所 | A kind of hydraulic cylinder for fixed mechanism |
| CN113847301A (en) * | 2021-09-18 | 2021-12-28 | 湖北航天技术研究院总体设计所 | Lateral force resistant oil cylinder |
| CN113847301B (en) * | 2021-09-18 | 2024-02-02 | 湖北航天技术研究院总体设计所 | Oil cylinder capable of resisting lateral force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20200813 |