CN209278255U - A kind of hydraulic abdomen elevating ram - Google Patents
A kind of hydraulic abdomen elevating ram Download PDFInfo
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- CN209278255U CN209278255U CN201822140821.1U CN201822140821U CN209278255U CN 209278255 U CN209278255 U CN 209278255U CN 201822140821 U CN201822140821 U CN 201822140821U CN 209278255 U CN209278255 U CN 209278255U
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Abstract
The utility model relates to technical field of hydraulic oil cylinder, specifically, being related to a kind of hydraulic abdomen elevating ram.Including cylinder body, cylinder bottom, cylinder cap and the piston and piston rod being arranged in inner chamber of cylinder block；The inside of the piston is equipped with Split type hydraulic limit valve, and the Split type hydraulic limit valve includes the one-way valve seat for being embedded in internal piston, limit valve rod, the limit valve pocket for being sleeved on limit valve stem end and the compressed spring being fixed on one-way valve seat；The end of the one-way valve seat is equipped with the 4th O-ring seals by being fixed between circlip for hole and piston, and between one-way valve seat and piston and is sealed；The limit valve rod runs through the rear and front end of one-way valve seat, and its top is equipped with the split pin for fixing compressed spring.Independent hydraulic stop valve, which is arranged, in internal piston in the utility model reduces the difficulty of processing of piston, ensure that the leakproofness of piston, reduces the internal leakage of oil cylinder, ensure that the working efficiency of oil cylinder.
Description
Technical field
The utility model relates to technical field of hydraulic oil cylinder, specifically, being related to a kind of hydraulic abdomen elevating ram.
Background technique
Hydraulic cylinder is widely applied hydro-mechanical components in automobile industry, and it is common structure that abdomen, which lifts hydraulic cylinder,
Form is widely used on the dump trucks of functions such as lifting, push-and-pull, has the operation is stable, easy to use, the big spy of structural capacity
Point.
Traditional abdomen lifts formula hydraulic cylinder, and (its specific structure is referring to Fig. 3, Fig. 4) according to People's Republic of China's automobile industry mark
The production of quasi- QC/T460-2010 dumper hydraulic cylinder technical conditions when cylinder efficient, by oil inlet input hydraulic pressure oil, pushes away
Valve rod in dynamic cylinder bottom rises, and valve rod successively pushes piston rod and piston forward, and the limit valve rod in piston touches cylinder cap bottom
When end, stroke longest, internal leakage≤11.4ml/min of hydraulic cylinder at this time.Limit valve pocket and valve rod in piston
Machining accuracy decides the size of internal leakage, if machining accuracy is low, leakage rate is big, has lost effect, affects oil cylinder
Working efficiency.
Utility model content
The purpose of the utility model is to provide a kind of hydraulic abdomen elevating rams, solve the above technical problem.
To solve the above problems, the technical scheme adopted by the utility model is
A kind of hydraulic abdomen elevating ram including cylinder body, the cylinder bottom that is welded on cylinder body bottom end, is mounted by means of bolts on cylinder
The cylinder cap on body top and the piston and piston rod being arranged in inner chamber of cylinder block；The inside of the cylinder bottom is equipped with hydraulic oil channel,
The hydraulic oil channel is connected with the inner cavity of cylinder body；It is additionally provided with oil inlet on the cylinder bottom, is connected at the oil inlet
There is oil inlet pipe weldment, the oil inlet pipe weldment is connected with hydraulic oil channel；The cylinder cap is equipped with oil outlet, described
Oil outlet is connected with flowline weldment, and the flowline weldment is connected with the inner cavity of cylinder body；The bottom of the piston rod
Portion is equipped with valve seat and valve rod for separating hydraulic oil channel and inner chamber of cylinder block, and the end of the valve rod through valve seat and passes through lock
Tight nut is fixed on the bottom of piston rod, and truncated cone spiral compression spring is equipped between the valve seat and locking nut；The work
The inside of plug is equipped with Split type hydraulic limit valve, and the Split type hydraulic limit valve includes the check valve for being embedded in internal piston
Seat, limit valve rod, the limit valve pocket for being sleeved on limit valve stem end and the compressed spring being fixed on one-way valve seat；It is described
The end of one-way valve seat is equipped with the 4th by being fixed between circlip for hole and piston between one-way valve seat and piston
O-ring seals are sealed；The limit valve rod runs through the rear and front end of one-way valve seat, and its top is equipped with for fixed compression
The split pin of spring.
It is preferred: the first O-ring seals are equipped between the cylinder cap and cylinder body；Between the cylinder cap and piston rod by outside to
Dustband, the second O-ring seals and Yx type axle sealing ring is inside successively arranged to be sealed.
It is preferred: to be equipped with rear guide ring between the piston and cylinder body and Yx type hole sealing ring is oriented to and is sealed.
It is preferred: to be fixed, and set by card key, card key set and circlip for shaft between the piston rod and piston
There are third O-ring seals to be sealed.
The utility model has the advantages that compared with prior art, it is oil that independent hydraulic stop valve, which is arranged, in internal piston in the utility model
Liquid provides limit function, reduces the difficulty of processing of piston, improves the quality of product, ensure that the leakproofness of piston, reduces
The internal leakage of oil cylinder, ensure that the working efficiency of oil cylinder.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of embodiment of the utility model；
Fig. 2 is the enlarged structure schematic diagram of part A in Fig. 1；
Fig. 3 is the structural schematic diagram of the elevating ram of the prior art；
Fig. 4 is the enlarged structure schematic diagram of part B in Fig. 3.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Embodiment
- Fig. 2 referring to Fig.1, hydraulic abdomen elevating ram described in the present embodiment, including cylinder body 1, cylinder bottom 2, cylinder cap 3 and set
Set piston 4 and piston rod 5 in 1 inner cavity of cylinder body.Wherein:
The cylinder bottom 2 is welded on the bottom end of cylinder body 1, is internally provided with hydraulic oil channel 6, the hydraulic oil channel 6 with
The inner cavity of cylinder body 1 is connected.The cylinder bottom 2 is equipped with oil inlet, is connected with oil inlet pipe weldment 28, institute at the oil inlet
Oil inlet pipe weldment 28 is stated to be connected with hydraulic oil channel 6.
The cylinder cap 3 is mounted by means of bolts on the top of cylinder body 1, and the first O shape is equipped between cylinder cap 3 and cylinder body 1
Sealing ring 7.The cylinder cap 3 is equipped with oil outlet, and the oil outlet is connected with flowline weldment 29, the flowline weldering
Fitting 29 is connected with the inner cavity of cylinder body 1.Dustband 8, the 2nd O are successively arranged between the cylinder cap 3 and piston rod 5 from outside to inside
Shape sealing ring 9 and Yx type axle sealing ring 10.
The bottom of the piston rod 5 is equipped with valve seat 13 and valve rod 14 for separating hydraulic oil channel 6 Yu 1 inner cavity of cylinder body,
The end of the valve rod 14 is fixed on the bottom of piston rod 5 through valve seat 13 and by locking nut 15, the valve seat 13 with
Truncated cone spiral compression spring 16 is equipped between locking nut 15.Pass through card key 17, card key set between the piston rod 5 and piston 4
18 and circlip for shaft 19 be fixed, and be equipped with third O-ring seals 20 be sealed.
Rear guide ring 11 and Yx type hole sealing ring 12 are equipped between the piston 4 and cylinder body 1.The inside of the piston 4
Equipped with Split type hydraulic limit valve, the Split type hydraulic limit valve includes being embedded in one-way valve seat 21 inside piston 4, limit
Position valve rod 22, the limit valve pocket 23 for being sleeved on limit 22 end of valve rod and the compressed spring being fixed on one-way valve seat 21
24.The end of the one-way valve seat 21 between circlip for hole 26 and piston 4 by being fixed, and one-way valve seat 21 and work
The 4th O-ring seals 25 are equipped between plug 4 to be sealed.The limit valve rod 22 runs through the rear and front end of one-way valve seat 21, and
Its top is equipped with the split pin 27 for fixing compressed spring 24.
The working principle of the utility model is summarized as follows:
When the piston rod 5 of elevating ram rises, hydraulic oil by oil inlet pipe weldment 28, into the hydraulic oil in cylinder bottom 2
Channel 6, oil liquid push valve rod 14, valve seat 13, truncated cone spiral compression spring 16, then piston rod 5 are pushed to rise.When piston rod 5
Extreme position is risen to, i.e., when the limit valve rod 22 in piston 4 touches 3 bottom of cylinder cap, limit valve rod 22 is opened, and oil liquid passes through
One-way valve seat 21 completes work done until oil outlet flows out the inner cavity of cylinder body 1 through flowline weldment 29.The piston of elevating ram
When bar 5 declines, vehicle body self weight pushes piston 4 and piston rod 5 to bounce back, when being slowly drop down to apart from 20-30 millimeters of lower limit, cylinder body 1
The inner cavity of oil groove outflow cylinder body 1 of the remaining oil liquid through being provided on valve rod 14, completes a working cycles in inner cavity.
The utility model uses Split type hydraulic limit valve, and internal leakage≤0.3ml/min, internal leakage is than traditional abdomen
Act formula hydraulic cylinder significantly reduces.
The utility model is arranged independent hydraulic stop valve in internal piston and provides limit function for oil liquid, reduces piston
Difficulty of processing, improve the quality of product, ensure that the leakproofness of piston, reduce the internal leakage of oil cylinder, ensure that oil
The working efficiency of cylinder.
The above is only the embodiments of the present invention, are not intended to limit patent of the another aspect by the utility model
Range, equivalent structure made by using the description of the utility model and the drawings are directly or indirectly used in other phases
The technical field of pass, similarly within the scope of patent protection of the utility model.
Claims (4)
1. a kind of hydraulic abdomen elevating ram, including cylinder body (1), the cylinder bottom (2) that is welded on cylinder body (1) bottom end, it is bolted
The piston (4) and piston rod (5) for being mounted on the cylinder cap (3) on cylinder body (1) top and being arranged in cylinder body (1) inner cavity；The cylinder
The inside at bottom (2) is equipped with hydraulic oil channel (6), and the hydraulic oil channel (6) is connected with the inner cavity of cylinder body (1)；The cylinder
It is additionally provided with oil inlet on bottom (2), is connected at the oil inlet oil inlet pipe weldment (28), the oil inlet pipe weldment (28)
It is connected with hydraulic oil channel (6)；The cylinder cap (3) is equipped with oil outlet, and the oil outlet is connected with flowline welding
Part (29), the flowline weldment (29) are connected with the inner cavity of cylinder body (1)；The bottom of the piston rod (5) is equipped with and is used for
Separate the valve seat (13) and valve rod (14) of hydraulic oil channel (6) and cylinder body (1) inner cavity, valve seat is run through in the end of the valve rod (14)
(13) and by locking nut (15) it is fixed on the bottom of piston rod (5), between the valve seat (13) and locking nut (15)
Equipped with truncated cone spiral compression spring (16)；It is characterized by: the inside of the piston (4) is equipped with Split type hydraulic limit valve, institute
The Split type hydraulic limit valve stated includes being embedded in the internal one-way valve seat (21) of piston (4), limit valve rod (22), being sleeved on limit
The limit valve pocket (23) of position valve rod (22) end and the compressed spring (24) being fixed on one-way valve seat (21)；It is described unidirectional
The end of valve seat (21) between circlip for hole (26) and piston (4) by being fixed, and one-way valve seat (21) and piston
(4) the 4th O-ring seals (25) are equipped between to be sealed；Limit valve rod (22) runs through the front and back two of one-way valve seat (21)
End, and its top is equipped with the split pin (27) for fixing compressed spring (24).
2. hydraulic abdomen elevating ram according to claim 1, it is characterised in that: set between the cylinder cap (3) and cylinder body (1)
There are the first O-ring seals (7)；It is successively arranged dustband (8), the 2nd O from outside to inside between the cylinder cap (3) and piston rod (5)
Shape sealing ring (9) and Yx type axle sealing ring (10) are sealed.
3. hydraulic abdomen elevating ram according to claim 1, it is characterised in that: set between the piston (4) and cylinder body (1)
There are rear guide ring (11) and Yx type hole sealing ring (12) to be oriented to and sealed.
4. hydraulic abdomen elevating ram according to claim 1, it is characterised in that: between the piston rod (5) and piston (4)
It is fixed by card key (17), card key set (18) and circlip for shaft (19), and is equipped with third O-ring seals (20) and carries out
Sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822140821.1U CN209278255U (en) | 2018-12-11 | 2018-12-11 | A kind of hydraulic abdomen elevating ram |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822140821.1U CN209278255U (en) | 2018-12-11 | 2018-12-11 | A kind of hydraulic abdomen elevating ram |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209278255U true CN209278255U (en) | 2019-08-20 |
Family
ID=67612000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822140821.1U Active CN209278255U (en) | 2018-12-11 | 2018-12-11 | A kind of hydraulic abdomen elevating ram |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209278255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458376A (en) * | 2018-12-11 | 2019-03-12 | 山东弘发兴凯实业股份有限公司 | A kind of hydraulic abdomen elevating ram |
-
2018
- 2018-12-11 CN CN201822140821.1U patent/CN209278255U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458376A (en) * | 2018-12-11 | 2019-03-12 | 山东弘发兴凯实业股份有限公司 | A kind of hydraulic abdomen elevating ram |
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