CN206278869U - Rear end cap bidirectional fastening jack - Google Patents
Rear end cap bidirectional fastening jack Download PDFInfo
- Publication number
- CN206278869U CN206278869U CN201621279719.4U CN201621279719U CN206278869U CN 206278869 U CN206278869 U CN 206278869U CN 201621279719 U CN201621279719 U CN 201621279719U CN 206278869 U CN206278869 U CN 206278869U
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- CN
- China
- Prior art keywords
- rear end
- end cap
- oil cylinder
- piston
- punching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of rear end cap bidirectional fastening jack, including oil cylinder, piston component, punching covers and seal assembly, the piston component includes piston head and piston rod, rear end cap is provided between piston head in oil cylinder, the outer wall of the rear end cap is connected by screw thread with the inwall of oil cylinder, punching set is installed with punching set baffle plate near cylinder bottom one end, punching set baffle plate has the extension of outwardly convex, have on rear end cap with extension to the holding section being adapted to, after holding section is fastened on extension, counterbore on baffle plate is covered by punching screw is hammered into rear end cap, rear end cap is extruded forward.Using above structure, by two kinds of fixed forms, horizontal and vertical twin fixed guide-vane is carried out to rear end cap, bigger fluid power can be born in use, the stability of rear end cap is increased, prevents from, because fixed not tight, situations such as falling off slip being loosened in use, the normal of influence jack is used, so as to ensure the normal function of jack.
Description
Technical field
The utility model belongs to Hydraulic for lifting load machinery technical field, and in particular to a kind of rear end cap bidirectional fastening jack.
Background technology
Jack is common lockup device in industrial processes or machine-building, the jacking and off-load of usual jack
It is that completion is moved up and down in oil cylinder inner wall by piston, piston head promotes piston rod to rise load, and piston head shrinks then
Piston rod is driven to shrink, so that off-load, rear end cap is mostly installed between piston component rear end and oil cylinder bottom, when piston head band
When piston bar moves forward, hydraulic oil is directly contacted with punching set, and rear end cap then plays sealing function, prevents hydraulic oil from along punching
Set and punching set baffle plate spill and leakage, while affording the active force of oil pressure.Traditional rear end cap homonymy is used and is integrally formed with cylinder bottom
Formula, this set is easy to process, but is detrimental to maintenance, and rear end cap has damage, then whole oil cylinder needs to change, or is having end
Using one ring set of increase between lid and cylinder bottom, then rear end cap is extruded by location nut, this arrangement increase part, it is unfavorable
In sealing.
Utility model content
To solve above technical problem, the utility model provides a kind of rear end cap bidirectional fastening jack.
To achieve the above object, the technical solution of the utility model is as follows：
A kind of rear end cap bidirectional fastening jack, it is characterized by, including oil cylinder, piston component, punching cover and for three
The seal assembly sealed between person, the piston component includes piston head and piston rod, and the punching set is set in the piston
In piston hole in component, the punching set is provided with punching set baffle plate near oil cylinder bottom end, and punching set baffle plate is near oil
Cylinder bottom side has the extension of outwardly convex, and the extension is provided with the counterbore for running through, and is equipped with counterbore and counterbore phase
The screw of adaptation, is provided with rear end cap between the oil cylinder bottom and piston head, and the outer wall of rear end cap is connected through a screw thread admittedly
It is scheduled on oil cylinder inner wall, the rear end cap is provided with the holding section being adapted with the extension, the engaging near oil cylinder bottom side
Portion is fastened on the extending portion position, and the screw is hammered into rear end cap through counterbore.
The piston rod has the step of depression near rear end cap one end, and the step is provided with external screw thread, the piston
There is the projection being adapted with the step, the projection is provided with the internal thread being adapted with the external screw thread, described on head
Rank is more long than projection, and described projecting through is threaded on the step, and the side of step is close in the raised side away from rear end cap
Wall, the opposite side living raised is provided with round nut, and the round nut is set in the step on the external screw thread of rear end cap,
The outer wall that the piston head is contacted with oil cylinder is provided with two guidance tapes, and the end of the oil cylinder other end is provided with drive end bearing bracket, described
Drive end bearing bracket is located between the oil cylinder and piston rod.
Using above structure, using the split-type structural of screw thread mating connection, and rear end cap between piston head and piston rod
It is fixed that outer wall first passes through screw thread and oil cylinder inside, then after engage with punching set baffle plate, then from nail in the default hole of punching set baffle plate
Enter screw, screw is followed closely on the lateral wall of rear end cap, by two kinds of fixed forms, rear end cap is carried out horizontal and vertical two-way
It is fixed, the stability of rear end cap is increased, prevent from, because fixed not tight, situations such as falling off slip, influence thousand being loosened in use
The normal of jin top is used, so as to ensure the normal function of jack.
As preferred：The rear end cap is provided with annular groove near piston head side inner and outer wall, in the annular
Groove is provided with axle step type seal combination.Using above structure, between rear end cap and piston rod and rear end can be effectively increased
The sealing property of contact surface, prevents hydraulic oil spill and leakage between lid and punching set.
As preferred：Two guidance tapes are tetrafluoro bronze guidance tape.Using above structure, increase the wear-resisting of guidance tape
Resistance to pressure, to prevent inside piston head scratch oil cylinder.
As preferred：The drive end bearing bracket and the plunger rod contacts face away from the end of one end of rear end cap be provided with J-type without
Bone dust ring.Using above structure, prevent external dust from entering from the outer end of drive end bearing bracket and plunger rod contacts, or piston
Dust adhesion enters in piston hole on piston rod wall when bar shrinks.
As preferred：The drive end bearing bracket is provided with groove A, the groove with plunger rod contacts inwall near one end of rear end cap
Solid lubrication copper sheathing is arranged with A.Using above structure, piston rod is all contacted in contraction process with solid lubrication copper sheathing, can
Effective lubrication is played to piston rod, keeps piston rod surface smooth, be more beneficial for the contraction of piston rod.
As preferred：It is connected using screw thread between the drive end bearing bracket and oil cylinder.Using above structure, will than traditional
Drive end bearing bracket is fastened on oil cylinder end wall by screw and is more convenient.
Compared with prior art, the beneficial effects of the utility model are：
The rear end cap bidirectional fastening jack that the utility model is provided, is coordinated using screw thread between piston head and piston rod and connected
The split-type structural for connecing, and rear end cap outer wall to first pass through screw thread and oil cylinder inside fixed, then after engaging with punching set baffle plate, then from
Punching set baffle plate hammers into screw in default hole, and screw is followed closely on the lateral wall of rear end cap, by two kinds of fixed forms, to rear end
Lid carries out horizontal and vertical twin fixed guide-vane, increased the stability of rear end cap, prevents from, because fixed not tight, being loosened in use and being occurred
Come off situations such as sliding, and the normal of influence jack is used, so as to ensure the normal function of jack.
Brief description of the drawings
Fig. 1 is the sectional view of the embodiment of the utility model one；
Fig. 2 is punching set baffle plate sectional view in embodiment illustrated in fig. 1；
Fig. 3 is rear end cap sectional view in embodiment illustrated in fig. 1.
Specific embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
3 and are covered referring to figs. 1 to the rear end cap bidirectional fastening jack shown in Fig. 3, including oil cylinder 1, piston component 2, punching
For the seal assembly sealed between three, the piston component 2 includes piston head 20 and piston rod 21, and the punching covers 3 sets
It is located in the piston hole 22 in the piston component 2, the punching set 3 is provided with punching set baffle plate near the bottom end of oil cylinder 1
31, punching set baffle plate 31 has the extension 311 of outwardly convex near the bottom side of oil cylinder 1, and the extension 311 is provided with and passes through
The screw 313 being adapted with counterbore 312 is equipped with the counterbore 312 worn, counterbore 312, in the bottom of the oil cylinder 1 and piston head
Rear end cap 11 is provided between 20, the outer wall of rear end cap 11 is connected through a screw thread and is fixed on the inwall of oil cylinder 1, the rear end cap 11 is close to
The bottom side of oil cylinder 1 is provided with the holding section 111 being adapted with the extension 311, and the holding section 111 is fastened on the extending portion
311 positions, the screw 313 is hammered into rear end cap 11 through counterbore 312.
The rear end cap 11 is provided with annular groove 113 near the side inner and outer wall of piston head 20, recessed in the annular
Groove 113 is provided with axle step type seal combination.
The piston component 2 includes piston head 20 and piston rod 21, and the piston rod 21 has near the one end of rear end cap 11
The step 211 of depression, the step 211 is provided with external screw thread, on the piston head 20 have with the step 211 be adapted
Raised 201, the projection 201 is provided with the internal thread being adapted with the external screw thread, and the step 211 is more long than raised 201, described
Raised 201 are threadedly attached on the step 211, and projection 201 is close to the side of step 211 away from the side of rear end cap 11
Wall, raised 201 opposite side living is provided with round nut 23, and the round nut 23 is set in the step 211 near rear end cap
On 11 external screw thread.
The outer wall that the piston head 20 is contacted with oil cylinder 1 is provided with two guidance tapes 4 of tetrafluoro bronze, and the oil cylinder 1 is another
The end at end is provided with drive end bearing bracket 12, and the drive end bearing bracket 12 is located between the oil cylinder 1 and piston rod 21.
Drive end bearing bracket 12, away from the end of one end of rear end cap 11, is provided with a J-type groove with the contact surface of the piston rod 21,
J-type bone free dust ring 5 is arranged with the J-type groove, the drive end bearing bracket 12 contacts inwall with piston rod 21 near one end of rear end cap 11
It is provided with A grooves 120, the A grooves 120 and is arranged with solid lubrication copper sheathing 121, screw thread is used between drive end bearing bracket 12 and oil cylinder 1
It is connected.
The course of work of the present utility model is as follows：
Hydraulic oil enters inside oil cylinder 1 near the oil inlet 13 of the one end of rear end cap 11, and promotion piston head 20 is in oil cylinder 1
It is moved along, and piston head 20 is connected with piston rod 21, so as to drive the ejection cylinder 1 of piston rod 21 to play the work of lifting load
With when needing to lay down load, the oil-out 14 that will be close to drive end bearing bracket 12 is opened, hydraulic oil outflow, distress resolves, piston rod 21
Then slowly withdraw inside oil cylinder 1, rear end cap 11 is subject to the opposition of hydraulic oil high simultaneously in the telescopic process of piston rod 21,
And middle rear end cap 11 of the present utility model is connected using horizontal screw thread with the inwall of oil cylinder 1, longitudinal direction uses screw 313 and wears
Heart set baffle plate 31 is fixed and is connected together, and fully ensures that rear end cap 11 will not shift, and ensures that the normal of jack is used with this.
Finally it should be noted that foregoing description is only preferred embodiment of the present utility model, the ordinary skill of this area
Personnel on the premise of without prejudice to the utility model objective and claim, can make various under enlightenment of the present utility model
Similar expression, such conversion is each fallen within protection domain of the present utility model.
Claims (6)
1. a kind of rear end cap bidirectional fastening jack, it is characterised in that：Including oil cylinder (1), piston component (2), punching set (3) and
For the seal assembly sealed between three, the piston component (2) includes piston head (20) and piston rod (21), the punching
Set (3) is set in the piston hole (22) in the piston component (2) Nei, and the punching set (3) sets near oil cylinder (1) bottom end
There is punching to cover baffle plate (31), the punching covers baffle plate (31) has the extension of outwardly convex near oil cylinder (1) bottom side
(311), the extension (311) is provided with the counterbore (312) for running through, and is equipped with counterbore (312) and is adapted with counterbore (312)
Screw (313), rear end cap (11), the outer wall of rear end cap (11) are provided between oil cylinder (1) bottom and piston head (20)
It is connected through a screw thread and is fixed on oil cylinder (1) inwall, the rear end cap (11) is provided with and the extension near oil cylinder (1) bottom side
The adaptable holding section (111) in portion (311), the holding section (111) is fastened on the extending portion (311) position, the screw (313)
Hammered into rear end cap (11) through counterbore (312)；
The piston rod (21) has the step (211) of depression near rear end cap (11) one end, and the step (211) is provided with outer
Screw thread, on the piston head (20) have with the step (211) be adapted projection (201), the projection (201) be provided with
The internal thread that the external screw thread is adapted, the step (211) is more long than raised (201), and the projection (201) is connected through a screw thread
On the step (211), raised (201) are close to the side wall of step (211), the projection away from the side of rear end cap (11)
(201) opposite side is provided with round nut (23), and the round nut (23) is set in the step (211) near rear end cap (11)
On external screw thread, the outer wall that the piston head (20) contacts with oil cylinder (1) is provided with two guidance tapes (4), oil cylinder (1) other end
End be provided with drive end bearing bracket (12), the drive end bearing bracket (12) is between the oil cylinder (1) and piston rod (21).
2. rear end cap bidirectional fastening jack according to claim 1, it is characterised in that：The rear end cap (11) is near work
Chock plug (20) side inner and outer wall is provided with annular groove (113), and the stepped sealing of axle is provided with the annular groove (113)
Combination.
3. rear end cap bidirectional fastening jack according to claim 1, it is characterised in that：Two guidance tapes (4) are
Tetrafluoro bronze guidance tape.
4. rear end cap bidirectional fastening jack according to claim 1, it is characterised in that：The drive end bearing bracket (12) with it is described
Piston rod (21) contact surface is provided with J-type bone free dust ring (5) away from the end of one end of rear end cap (11).
5. rear end cap bidirectional fastening jack according to claim 1, it is characterised in that：The drive end bearing bracket (12) and piston
Bar (21) contact inwall is provided with A grooves (120), the A grooves (120) near one end of rear end cap (11) and is arranged with solid profit
Sliding copper sheathing (121).
6. rear end cap bidirectional fastening jack according to claim 1, it is characterised in that：The drive end bearing bracket (12) and oil cylinder
(1) it is connected using screw thread between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621279719.4U CN206278869U (en) | 2016-11-25 | 2016-11-25 | Rear end cap bidirectional fastening jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621279719.4U CN206278869U (en) | 2016-11-25 | 2016-11-25 | Rear end cap bidirectional fastening jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206278869U true CN206278869U (en) | 2017-06-27 |
Family
ID=59074214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621279719.4U Expired - Fee Related CN206278869U (en) | 2016-11-25 | 2016-11-25 | Rear end cap bidirectional fastening jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206278869U (en) |
-
2016
- 2016-11-25 CN CN201621279719.4U patent/CN206278869U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170627 Termination date: 20171125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |