CN208565132U - A kind of automobile-used plunger case of compression - Google Patents
A kind of automobile-used plunger case of compression Download PDFInfo
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- CN208565132U CN208565132U CN201820987371.7U CN201820987371U CN208565132U CN 208565132 U CN208565132 U CN 208565132U CN 201820987371 U CN201820987371 U CN 201820987371U CN 208565132 U CN208565132 U CN 208565132U
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- Prior art keywords
- plunger
- buffering ring
- buffer
- piston
- buffering
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Abstract
The utility model discloses a kind of automobile-used plunger cases of compression, piston rod is hollow stem, piston upper offers mounting groove on the end face of rodless cavity, being placed in mounting groove can be along the buffering ring being free to move axially, the edge of buffering ring is uniformly distributed fluted, and the buffer plunger with buffering ring guiding cooperation is removably equipped on cylinder bottom.When plunger case stretches out, hydraulic oil injects in plunger, and hydraulic oil pushes the circumferential circlip side of buffering mobile, and hydraulic oil is entered in rodless cavity by the groove at buffering ring edge at this time, and then piston rod is pushed to stretch out；When plunger case is withdrawn, piston rod is moved to cylinder bottom, and buffer plunger is gradually introduced in buffering ring, and gap of the hydraulic oil between buffering ring and buffer plunger is flowed through in rodless cavity at this time, forms buffering.The utility model passes through the buffer structure of buffering ring and buffer plunger, realizes reliable buffering when plunger case is withdrawn, and is facilitated by the flexible configuration and replacement of bolster and realizes that different cushion strokes and different buffer speeds switch.
Description
Technical field
The utility model relates to a kind of automobile-used plunger cases of compression, for realizing the lifting action and buffering of compression vehicle sizer
Demand belongs to the hydraulic cylinder technical field of environmental sanitation vehicles.
Background technique
Currently, domestic compression type garbage truck lifting post plug cylinder uses piston type double-acting plunger case mostly, this control mode
Sizer lifting and locking hydraulic system cannot link, and two reversal valves need to be respectively set and carry out action control, make electrical and liquid
Pressure control system is increasingly complex, and increases system cost.
In plunger case context buffer, the form that buffer plunger is mounted on piston rod is generallyd use, the buffering with cylinder bottom is passed through
Slot gap formed buffering, since piston rod and cylinder barrel concentricity and straightness are difficult to ensure, often occur buffer plunger and
Cylinder bottom is slidably matched the big problem of gap coaxiality deviation, causes the rigid impact of bumper post plug cylinder buffer locations, buffering effect
Difference greatly reduces bolster service life simultaneously.Meanwhile oil liquid need to pass through buffering when traditional buffer structure plunger case starting
Gap largely affects the startup power and starting speed of plunger case.
In addition, traditional buffer plunger and piston rod are integral type, different cushion strokes and different buffer speed switchings are all
Piston rod is needed to change, replacement is inconvenient and wastes material.
Utility model content
The purpose of the utility model is to overcome deficiencies in the prior art, provide a kind of automobile-used plunger case of compression, lead to
The buffer structure of buffering ring and buffer plunger is crossed, realizes reliable decline buffering, flexible configuration and replacement side by bolster
Just different cushion strokes and the switching of different buffer speeds are realized.
In order to solve the above technical problems, the utility model provides a kind of automobile-used plunger case of compression, including by cylinder bottom and cylinder
It the cylinder body of cylinder composition, the piston rod that can move reciprocatingly in cylinder body and forms a fixed connection and moves synchronously with piston rod
Piston, cylinder interior are divided into rodless cavity and rod chamber by piston, which is characterized in that piston rod is hollow stem, in piston rod
The one end for stretching out cylinder barrel is equipped with the oil inlet that hydraulic oil can be injected into plunger, and piston one end is embedded in plunger
And along the through-hole being connected to plunger is axially arranged with, piston upper offers mounting groove on the end face of rodless cavity, this peace
The diameter of tankage is greater than piston hole diameter, and the opening of mounting groove is placed with the circlip of position-limiting action, is located at card in mounting groove
It is placed on the inside of spring and can be slightly less than piston hole diameter along the buffering ring being free to move axially, the annular diameters of buffering ring, buffer
The edge of ring is uniformly distributed fluted, and the buffer plunger with buffering ring guiding cooperation is removably equipped on cylinder bottom；
When plunger case stretches out, hydraulic oil when running of hydraulic power oil is to piston position by pushing away in oil inlet injection plunger
Dynamic to buffer circumferential circlip side movement, hydraulic oil is entered in rodless cavity by the groove at buffering ring edge at this time, and then pushes piston
Bar stretches out；When plunger case is withdrawn, piston rod is moved to cylinder bottom, and buffer plunger is gradually introduced in buffering ring, and buffering ring is pushed away
To mounting groove bottom end face, gap of the hydraulic oil between buffering ring and buffer plunger is flowed through in rodless cavity at this time, forms buffering.
Preferably, buffer plunger is equipped with taper chamfering towards the end face of buffering ring.
Preferably, buffer plunger is sleeved on fixed bolt, and fixed bolt, which is connected through a screw thread, is mounted on cylinder bottom.
Preferably, buffer plunger is fastened on cylinder bottom by nut and spring washer by fixed bolt end.
Preferably, electromagnetic cartridge valve is installed at oil inlet.
Preferably, cylinder bottom is equipped with the vent valve of connection rodless cavity.
Preferably, hole is offered on the side wall that piston and piston rod are overlapped, it is by this hole that rod chamber and piston rod is empty
Chamber connection, and then when rod chamber be connected to rodless cavity.
Compared with prior art, the utility model beneficial effect achieved is:
1) plunger case oil inlet inserts electromagnetic cartridge valve, any one in oil circuit occurs damaged when compression vehicle sizer is gone up and down
It will not result in precompressor surprisingly to fall, effectively prevent contingency；
2) compression vehicle plunger case realizes compression vehicle locking action and sizer lifting action shares a Y type Median Function
Main control valve, simplify control mode and fluid pressure line；
3) plunger case realizes that compression vehicle sizer declines by self weight, and Y type Median Function master control banked direction control valves are maintained at middle position not
It needs to commutate, it is energy-saving；
4) buffer structure that buffering ring and buffer plunger are formed reduces piston rod and cylinder barrel concentricity and straightness processing
Required precision avoids the rigid impact of buffer locations, effectively improves the use reliability of plunger case buffer unit；
5) buffer structure realizes unidirectional buffering throttling, effectively prevents the starting nothing of oil cylinder caused by conventional buffer mode
The power situation slow with starting；
6) buffering ring and buffer plunger replacement are convenient, and the buffer plunger for replacing different length realizes different cushion strokes
Switching, the buffer plunger or buffering ring for replacing different fit dimensions realize different buffer speeds；
7) buffer structure and plunger installation form can apply and two-way cylinder, is widely used.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model plunger case；
Fig. 2 is structural schematic diagram when the utility model plunger case stretches out；
Fig. 3 is structural schematic diagram when the utility model plunger case is withdrawn.
Appended drawing reference: 1, vent valve；2, fixed bolt；3, piston；4, circlip；5, buffering ring；6, buffer plunger；7, tightening
Screw；8, piston rod；9, nut；10, spring washer；11, electromagnetic cartridge valve；12, oil inlet；13, hole.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.Following embodiment is only used for clearly illustrating this
The technical solution of utility model, and cannot be used as a limitation the limitation protection scope of the utility model.
In the description of the utility model patent, it should be noted that the terms "include", "comprise" or its any other
Variant is intended to non-exclusive inclusion, in addition to comprising those of listed element, but also may include being not explicitly listed
Other element.
In the description of the utility model patent, it should be noted that term " center ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of description the utility model patent and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the utility model patent.This
Outside, term " first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the utility model patent, it should be noted that unless otherwise clearly defined and limited, term
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State concrete meaning of the term in the utility model patent.
The automobile-used plunger case of a kind of compression of the utility model, as shown in Figure 1 to Figure 3, including what is be made of cylinder bottom and cylinder barrel
Cylinder body, the piston rod 8 that can be moved reciprocatingly in cylinder body and the piston 3 for forming a fixed connection and moving synchronously with piston rod 8,
Cylinder interior is divided into rodless cavity and rod chamber by piston 3, which is characterized in that piston rod 8 is hollow stem, is stretched in piston rod 8
One end of cylinder barrel is equipped with the oil inlet 12 that hydraulic oil can be injected into 8 cavity of piston rod out, and it is empty that 3 one end of piston is embedded in piston rod 8
Intracavitary and edge is axially arranged with the through-hole being connected to 8 cavity of piston rod, offers installation on the end face towards rodless cavity on piston 3
The diameter of slot, this mounting groove is greater than piston hole diameter, and the opening of mounting groove is placed with the circlip 4 of position-limiting action, mounting groove
It is interior be located on the inside of circlip 4 be placed with that can be slightly less than piston along the buffering ring 5 being free to move axially, the annular diameters of buffering ring 5 logical
Bore dia, the edge of buffering ring 5 is uniformly distributed fluted, and the bumper post with the guiding cooperation of buffering ring 5 is removably equipped on cylinder bottom
Plug 6；
When plunger case being needed to stretch out, hydraulic oil is injected in 8 cavity of piston rod by oil inlet 12, running of hydraulic power oil to piston 3
Push buffering ring 5 mobile to 4 side of circlip when position, hydraulic oil is entered in rodless cavity by the groove at 5 edge of buffering ring at this time, into
And piston rod 8 is pushed to stretch out；When plunger case is withdrawn, piston rod 8 is moved to cylinder bottom, and buffer plunger 6 is gradually introduced buffering ring 5
It is interior, and push buffering ring 5 to mounting groove bottom end face, at this time in rodless cavity hydraulic oil between buffering ring 5 and buffer plunger 6
Gap is flowed through, and buffering is formed.
Embodiment
The utility model compress automobile-used plunger case structure as shown in Figure 1, include the cylinder body being made of cylinder bottom and cylinder barrel, can be
The piston 3 to move reciprocatingly in cylinder body and the piston rod 8 for forming a fixed connection and moving synchronously with piston 3, cylinder interior are logical
Cross piston 3 and be divided into rodless cavity and rod chamber, piston rod 8 is hollow stem, plunger case oil inlet from the oil inlet 12 at 8 end of piston rod into
Oil, oil inlet 12 connect oil inlet pipe, and electromagnetic cartridge valve 11(electricity is also installed in the pipeline that oil inlet 12 is connected to piston rod 8
Magnetic inserted valve belongs to Hydraulic Field conventional components, its specific structure is not drawn into Fig. 1, is only illustrated).This electromagnetic cartridge valve is
2/2-way solenoid directional control valve.When plunger case stretches out, oil liquid opens electromagnetic cartridge valve check valve by oil inlet 12 and enters plunger
Cylinder piston rod cavity.When plunger case is withdrawn, electromagnetic cartridge valve obtains electric, and oil cylinder is withdrawn under compression vehicle sizer Gravitative Loads, liquid
Pressure oil is flowed back from plunger to oil inlet.Meanwhile oil inlet 12 can integrate damping plug to reduce the decline of compression vehicle sizer
Speed.
Piston 3 is along being axially arranged with the through-hole being connected to 8 cavity of piston rod, and piston one end is protruded into plunger, leads to
It is fixed to cross fastening screw 7.Mounting groove is offered on end face on piston 3 towards rodless cavity, the diameter of this mounting groove is greater than piston 3
Through-hole diameter, in the mounting groove of 3 inner ring of piston, the circlip 4 by being assemblied in mounting groove open end is limited buffering ring 5.It is slow
It rushes 5 surrounding of ring and is provided with uniformly distributed groove, and buffering ring front/rear end and mounting groove, there are distance, buffering ring 5 can be in mounting groove
It is free to move axially.2 one end of fixed bolt, which is connected through a screw thread, is mounted on cylinder bottom, and buffer plunger 6 is sleeved on fixed bolt 2,
Fixed bolt end is fastened buffer plunger by nut 9 and spring washer 10, this structure realizes the convenience of the replacement of buffer plunger 6
Property, it is only necessary to unscrew the i.e. replaceable buffer plunger 6 of nut 9.The annular diameters of buffering ring 5 are arranged simultaneously, and to be slightly less than piston hole straight
Diameter, so that there are gaps between 3 through-hole of buffer plunger 6 and piston.
The course of work of the utility model plunger case are as follows: when plunger case being needed to stretch out, referring to fig. 2, hydraulic oil is by oil inlet
In 12 injection 8 cavitys of piston rod, when running of hydraulic power oil is to piston position, pushed open by the gap between buffer plunger 6 and piston 3
Buffering ring 5 is mobile to 4 side of circlip, and hydraulic oil is entered in rodless cavity by the groove at 5 edge of buffering ring at this time, and then pushes piston
Bar 8 stretches out；When plunger case is withdrawn, referring to Fig. 3, piston rod is moved under compression vehicle sizer Gravitative Loads to cylinder bottom, makes to delay
It rushes plunger 6 to be gradually introduced in buffering ring 5, and pushes buffering ring 5 to mounting groove bottom end face, hydraulic oil is postponed in rodless cavity at this time
The gap rushed between ring 5 and buffer plunger 6 is flowed through, and buffering is formed.
The buffer structure of buffering ring and the buffer plunger cooperation of the utility model, realizes buffering ring and buffering in buffering course
Plunger does subtle angle adjustment with liquid stream automatically, guarantees buffering effect, reduces piston rod and cylinder barrel concentricity and straightness
Requirement on machining accuracy avoids the rigid impact of buffer locations, effectively improves the use reliability of plunger case buffer structure.Due to
Without influence when buffer structure starts plunger case, the one-way buffer throttling of plunger case is realized, conventional buffer side is effectively prevented
The starting of plunger case caused by formula is powerless and starts slow situation.
And the compression vehicle plunger case structure type of the utility model realizes that compression vehicle locking action and sizer lifting are dynamic
The master control banked direction control valves for making a shared Y type Median Function, simplify control mode and fluid pressure line.Plunger case realizes that compression vehicle is filled out
Glassware declines by self weight, and Y type Median Function master control banked direction control valves are maintained at middle position and are not required to commutate, energy-saving.
Due to initially forming buffering when buffer plunger enters buffering ring, so the buffer plunger of replacement different length can be realized
Different cushion stroke matchings.Buffer gap determines buffering effect, and buffer plunger or the buffering ring for replacing different fit dimensions are real
Existing different buffer speeds.
As the preferred embodiment of the utility model, buffer plunger 6 is equipped with taper chamfering towards the end face of buffering ring 5, just
In entering buffering ring 5 in initial buffer.
Cylinder bottom is equipped with the vent valve 1 of connection rodless cavity, when 11 card valve of electromagnetic cartridge valve causes sizer that cannot decline,
Vent valve 1 is unscrewed, oozes hydraulic oil in rodless cavity by vent valve, realizes sizer decline.
Hole 13 is offered on the side wall that piston 3 and piston rod 8 are overlapped, is connected rod chamber and rodless cavity by this hole 13
It is logical.When piston rod stretches out, during hydraulic oil flows to rodless cavity, also column can be entered by the hole 13 on piston and piston rod
Plug cylinder rod chamber；When piston rod is withdrawn, rod chamber oil liquid through hole 13 is flowed back to.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change
It also should be regarded as the protection scope of the utility model into modification.
Claims (7)
1. a kind of automobile-used plunger case of compression, including the cylinder body being made of cylinder bottom and cylinder barrel, the work that can be moved reciprocatingly in cylinder body
Stopper rod and the piston for forming a fixed connection and moving synchronously with piston rod, cylinder interior are divided into rodless cavity by piston and have
Rod cavity, which is characterized in that piston rod is hollow stem, and being equipped in one end that piston rod stretches out cylinder barrel can inject into plunger
The oil inlet of hydraulic oil, piston one end insertion plunger is interior and along the through-hole being connected to plunger is axially arranged with, and lives
Mounting groove is offered on the end face towards rodless cavity beyond the Great Wall, the diameter of this mounting groove is greater than piston hole diameter, and mounting groove is opened
The circlip of position-limiting action is placed at mouthful, be located on the inside of circlip in mounting groove be placed with can along the buffering ring being free to move axially,
The annular diameters of buffering ring are slightly less than piston hole diameter, and the edge of buffering ring is uniformly distributed fluted, removably assemble on cylinder bottom
There is the buffer plunger with buffering ring guiding cooperation；
Plunger case stretch out when, hydraulic oil by oil inlet injection plunger in, running of hydraulic power oil arrive piston position when push delay
Circumferential circlip side movement is rushed, hydraulic oil is entered in rodless cavity by the groove at buffering ring edge at this time, and then piston rod is pushed to stretch
Out；When plunger case is withdrawn, piston rod is moved to cylinder bottom, and buffer plunger is gradually introduced in buffering ring, and buffering ring is pushed to pacify
Tankage bottom end face, gap of the hydraulic oil between buffering ring and buffer plunger is flowed through in rodless cavity at this time, forms buffering.
2. a kind of automobile-used plunger case of compression according to claim 1, characterized in that end face of the buffer plunger towards buffering ring
Equipped with taper chamfering.
3. a kind of automobile-used plunger case of compression according to claim 1, characterized in that buffer plunger is sleeved on fixed bolt
On, fixed bolt, which is connected through a screw thread, is mounted on cylinder bottom.
4. a kind of automobile-used plunger case of compression according to claim 3, characterized in that fixed bolt end passes through nut and bullet
Buffer plunger is fastened on cylinder bottom by pad.
5. a kind of automobile-used plunger case of compression according to claim 1, characterized in that install electromagnetic cartridge valve at oil inlet.
6. a kind of automobile-used plunger case of compression according to claim 1, characterized in that cylinder bottom is equipped with putting for connection rodless cavity
Air valve.
7. a kind of automobile-used plunger case of compression according to claim 1, characterized in that in the side wall that piston and piston rod are overlapped
On offer hole, rod chamber is connected to rodless cavity by this hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820987371.7U CN208565132U (en) | 2018-06-26 | 2018-06-26 | A kind of automobile-used plunger case of compression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820987371.7U CN208565132U (en) | 2018-06-26 | 2018-06-26 | A kind of automobile-used plunger case of compression |
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| Publication Number | Publication Date |
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| CN208565132U true CN208565132U (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820987371.7U Active CN208565132U (en) | 2018-06-26 | 2018-06-26 | A kind of automobile-used plunger case of compression |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679036A (en) * | 2018-06-26 | 2018-10-19 | 徐州徐工环境技术有限公司 | A kind of automobile-used plunger case of compression |
| CN110454461A (en) * | 2019-08-29 | 2019-11-15 | 江苏恒立液压股份有限公司 | Piston component and elevating ram with it |
| CN113323833A (en) * | 2021-06-08 | 2021-08-31 | 董亮 | High-efficient reciprocating motion formula liquid release |
-
2018
- 2018-06-26 CN CN201820987371.7U patent/CN208565132U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679036A (en) * | 2018-06-26 | 2018-10-19 | 徐州徐工环境技术有限公司 | A kind of automobile-used plunger case of compression |
| CN110454461A (en) * | 2019-08-29 | 2019-11-15 | 江苏恒立液压股份有限公司 | Piston component and elevating ram with it |
| CN110454461B (en) * | 2019-08-29 | 2023-12-19 | 江苏恒立液压股份有限公司 | Piston assembly and lifting oil cylinder with same |
| CN113323833A (en) * | 2021-06-08 | 2021-08-31 | 董亮 | High-efficient reciprocating motion formula liquid release |
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