CN109989444A - A kind of excavator hydraulic oil case - Google Patents
A kind of excavator hydraulic oil case Download PDFInfo
- Publication number
- CN109989444A CN109989444A CN201910372228.6A CN201910372228A CN109989444A CN 109989444 A CN109989444 A CN 109989444A CN 201910372228 A CN201910372228 A CN 201910372228A CN 109989444 A CN109989444 A CN 109989444A
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- Prior art keywords
- unit
- hydraulic oil
- axial
- ring
- axial groove
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0883—Tanks, e.g. oil tank, urea tank, fuel tank
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0891—Lids or bonnets or doors or details thereof
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to excavator structure technical field more particularly to a kind of excavator hydraulic oil casees.The present invention achievees the purpose that hydraulic oil container service hatch effectively uses by way of setting sealing coil unit, axial groove, circumferential support unit, sliding plate unit, bending engaging pole unit and fixed pole unit between maintenance sealed tube and closing cap.The present invention has the advantages of service hatch closure is high, closing cap either on or off flexible and convenient operation, the multiple enclosed construction of closing cap is rationally effective and hydraulic oil container facilitates normal use and maintenance operation.
Description
Technical field
The invention belongs to excavator structure technical field more particularly to a kind of excavator hydraulic oil casees.
Background technique
Hydraulic oil container refers to the container for guaranteeing the required oil liquid of hydraulic system work for storing, in excavator structure,
Hydraulic oil container is generally used for the hydraulic cylinder on driving digging arm, guarantees that digging arm completes the movements such as flexible crawl.
On the other hand, existing hydraulic oil container increases the mode of blind patch typically merely by simple service hatch, reaches dimension
Opening when repairing, the purpose closed when using usually, that there are cover closures is poor for which, and the problem that folding is inconvenient.
Patent announcement number is CN202203185U, and the day for announcing is that the Chinese utility model patent of 2012.04.25 discloses one
Kind hydraulic oil container, it includes cabinet, and the wall thickness of the cabinet is 2mm~4mm, and the cabinet is equipped with service hatch, described
Cabinet at service hatch is equipped with the cover board of oil sealing.
But there is cover plate opening-closing using effect difference in the hydraulic oil container in the utility model patent.
Summary of the invention
The object of the present invention is to provide a kind of excavator hydraulic oil casees, can be by between maintenance sealed tube and closing cap
Sealing coil unit, axial groove, circumferential support unit, sliding plate unit, bending engaging pole unit and fixed pole unit are set
Mode achievees the purpose that hydraulic oil container service hatch effectively uses.The present invention has service hatch closure height, closing cap either on or off
Flexible and convenient operation, the multiple enclosed construction of closing cap is rationally effective and hydraulic oil container facilitates normal use and maintenance operation
Advantage.
The present invention solve the above problems the technical solution adopted is that: a kind of excavator hydraulic oil case, including tank body of oil tank, if
The service hatch on the tank body of oil tank is set, the maintenance sealed tube in the service hatch is arranged in grafting, and socket is arranged in institute
The closing cap on maintenance sealed tube is stated, further includes the sealing coil unit being arranged on the maintenance sealed tube outer ring surface, setting exists
Axial groove on the maintenance closing tube wall, is arranged in the circumferential support unit in the axial groove, is inserted into the axial groove
The socket setting of interior and lower end on the circumferential support unit and by sealing coil unit compression after to the interior way of propelling with
For the sliding plate unit of circumferential direction sliding, it is arranged in the axial groove at upper end position and circumferential by the sliding panel unit
Slid inward is bent and protruded the bending engaging pole unit on the outside of the axial groove in turn, and is arranged on the inside of the closing cap
On face and for carrying out arcwall face engaging and then the fixed closing cap of axial limiting to the bending engaging pole unit outstanding
Fixation pole unit.
Further preferred technical solution is: the sealing coil unit includes being arranged in the maintenance sealed tube outer ring surface
On annular mounting groove, and the sealing circle body for covering in the annular mounting groove and outwardly protruding, the sealing circle body cuts
Face be it is trapezoidal, the trapezoidal bevel edge outwardly protrudes and is used to receive the pushing of the closing cap lower end inside seamed edge；The ring
It include the fixed column being arranged on the axial groove inner side surface to support unit, and socket is arranged in the fixed column simultaneously
Jack up the support spring of the sliding plate unit outward for circumferential direction；The sliding plate unit includes that the long axial and maintenance is sealed
The axial parallel plate body of stopped pipe, is arranged on the sliding plate unit and is used for the plate body aperture of the fixed column grafting, and
The aperture on the plate body lateral surface and across the annular mounting groove and the axial groove is set and is used to receive described
Seal the promotion column of the inside impetus of circle body.
Further preferred technical solution is: the sliding plate unit further includes the plate for being used to form the plate body aperture
In vivo circle, inside and outside the annular surface installation that and two sides Nian Jie with the plate body inner ring and the plate body outwardly protrude respectively
Ring, and bonding setting on the protrusion anchor ring of the fixed column side and are used to limit the fixed support in the mounting ring
The spring retainer ring of spring, the promotion column are hollow cylinder, and be spirally connected be arranged in the mounting ring different from the bullet is arranged
On the outer side ring surface of spring stop collar.
Further preferred technical solution is: the bending engaging pole unit includes that side is arranged on the inside of the axial groove
It is on face and long axially with the circumferential parallel inserting column of maintenance sealed tube, it is arranged at the plate body upper end position and is used for institute
The spliced eye of inserting column insertion is stated, two apertures are simultaneously socketed the inclination elastic piece that the inserting column is arranged in and both ends difference
It is arranged on two inclination elastic piece sides and for outwardly protruding the engaging column engaged with the fixed column unit, two
The outboard end of the inclination elastic piece is adhesively fixed.
Further preferred technical solution is: the lower side of two inclination elastic pieces is against the plate body side respectively
On face and the axial groove inner side surface, the inserting column be quadrangular, it is described inclination elastic piece on hole shape for institute
State the corresponding rectangle of inserting column.
Further preferred technical solution is: the engaging column is cylinder.
Further preferred technical solution is: the fixed pole unit includes being arranged in the closing cap inside bottom surface
The parallel mounting post of a pair, and be arranged on the parallel mounting post lower end surface and for after engaging to the engaging column
The fixed sphere of axial limiting.
Further preferred technical solution is: the axial groove, circumferential support unit, sliding plate unit, bending engaging
The number of locations of pole unit and fixed pole unit is arranged in a one-to-one correspondence, total 2-5 group.
Further preferred technical solution is: the quantity of the circumferential support unit is 2-3 on the sliding plate unit
A, setting is at plate body length is axially closer to the axial groove inner side.
Further preferred technical solution is: bonding is equipped with for auxiliary on the maintenance sealed tube exterior annular transverse plane
The axial sealing ring of the sealing circle body is helped, the outer side edges of the axial sealing ring are located on the inside of the axial groove.
The present invention by between maintenance sealed tube and closing cap setting sealing coil unit, axial groove, circumferential support unit,
The mode for sliding plate unit, bending engaging pole unit and fixed pole unit, reaches the mesh that hydraulic oil container service hatch effectively uses
's.The present invention is high with service hatch closure, closing cap either on or off flexible and convenient operation, and the multiple enclosed construction of closing cap is reasonable
The advantages of effectively and hydraulic oil container facilitates normal use and maintenance operation.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the positional structure schematic diagram that coil unit is sealed in the present invention.
Fig. 3 is the position view of circumferential support unit and sliding plate unit in the present invention.
Fig. 4 is the positional structure schematic diagram of circumferential support unit in the present invention.
Fig. 5 is the positional structure schematic diagram of bending engaging pole unit and fixed pole unit in the present invention.
Fig. 6 is the positional structure schematic diagram that column is engaged in the present invention.
Fig. 7 is that engaging column and fixed pole unit use schematic diagram in the present invention.
Specific embodiment
As described below is only presently preferred embodiments of the present invention, is not intended to limit the scope of the present invention.
Embodiment: as shown in attached drawing 1,2,3,4,5,6 and attached drawing 7, a kind of excavator hydraulic oil case, including tank body of oil tank
11, service hatch is set on the tank body of oil tank 11, and the maintenance sealed tube 12 in the service hatch, and socket is arranged in grafting
Closing cap 13 on the maintenance sealed tube 12 is set, further includes the sealing being arranged on maintenance 12 outer ring surface of sealed tube
The axial groove 2 on maintenance 12 tube wall of sealed tube is arranged in coil unit 1, and the circumferential support being arranged in the axial groove 2 is single
Member 3, is inserted into the axial groove 2 and lower end socket setting is on the circumferential support unit 3 and through the sealing coil unit 1
It is arranged in the axial groove 2 at upper end position simultaneously to the interior way of propelling with the sliding plate unit 4 for circumferential direction sliding after compression
Pole unit is engaged by the bending that the circumferential slid inward of the sliding plate unit 4 is bent and protruded in 2 outside of axial groove
5, and be arranged on 13 medial surface of closing cap and carry out arcwall face card for engaging pole unit 5 to the bending outstanding
Close the fixation pole unit 6 of the fixed closing cap 13 of axial limiting in turn.
In the present embodiment, the closing cap 13 is opened from the maintenance sealed tube 12, can carry out the fuel tank case
Maintenance operation in body 11, when the tank body of oil tank 11 works normally, the closing cap 13 is fastened to be closed in the maintenance
It on pipe 12, needs to guarantee certain leakproofness, hydraulic oil is avoided to leak out, wherein the sealing ring unit 1 passes through elastic engaging side
Formula guarantees basic sealing effect, and bending engaging pole unit 5 is mutually clamped with the fixed pole unit 6, described in guarantee
Closing cap 13 has installation stability, and finally making the service hatch of the hydraulic oil container, closure is high when having capping, opens
Easy to operate simple two-fold advantage when conjunction.
On the other hand, after the sealing coil unit 1 is inwardly squeezed by the circumferential direction of the closing cap 13, the sliding is pushed
Plate unit 4, the sliding plate unit 4 pushes again squeezes the bending engaging pole unit 5, so that the bending engages pole unit 5
From initial expansion and the state that is recessed in the axial groove 2 is switched to and squeezes bending to protrusion in 2 outside of the axial groove
State, be finally connected together with the fixed completion of pole unit 6 operation, so that the closing cap 13 is in the maintenance sealed tube 12
On installation bonding strength it is bigger, and when the closing cap 13 exerts a force from the maintenance sealed tube 12 and takes off, the circumferential direction
The original state of support unit 3 towards the sliding plate unit 4 is jacked up and is restored, so that bending engaging pole unit 5 restores
Flat is simultaneously finally separated with the fixed pole unit 6, is retracted in the axial groove 2, and the entire hydraulic oil container is completed
Switching action when maintenance.
The sealing coil unit 1 includes the annular mounting groove 101 being arranged on maintenance 12 outer ring surface of sealed tube, and
The sealing circle body 102 in the annular mounting groove 101 and outwardly protruded is covered, the section of the sealing circle body 102 is trapezoidal, institute
State the pushing that trapezoidal bevel edge outwardly protrudes and is used to receive the 13 lower end inside seamed edge of closing cap；The circumferential direction support unit
3 include the fixed column 301 being arranged on 2 inner side surface of axial groove, and socket setting is used in combination in the fixed column 301
The support spring 302 of the sliding plate unit 4 is jacked up outward in circumferential direction；The sliding plate unit 4 includes the long axial and dimension
The axial parallel plate body 401 of sealed tube 12 is repaired, is arranged on the sliding plate unit 4 and for 301 grafting of fixed column
Plate body aperture 402, and be arranged on 401 lateral surface of plate body and pass through the annular mounting groove 101 and the axial groove 2
Between aperture and for receive it is described sealing the inside impetus of circle body 102 promotion column 403.
In the present embodiment, when the plate body 401 is close to the annular mounting groove 101, in the bending engaging pole unit 5
The axial groove 2 is shunk in, and the sealing circle body 102 is inwardly compressed in the closing cap 13, the sealing circle body 102 inwardly pushes away again
After moving the promotion column 403, the plate body 401 can overcome the jack-up elastic force of the support spring 302, by the plate body 401
Slid inward finally triggers the outwardly convex of the bending engaging pole unit 5, and the engaging with the fixed pole unit 6 is made
With.
Wherein the support spring 302 slides in and out and restores to initial shape for guaranteeing that the plate body 401 has one
The elastic force of state, the plate body 401 is inside contracted close to the annular mounting groove 101, the bending engaging pole unit 5 under the original state
In the axial groove 2.
The sliding plate unit 4 further includes the plate body inner ring 404 for being used to form the plate body aperture 402, inside and outside ring
The shape face mounting ring 405 that and two sides Nian Jie with the plate body inner ring 404 and the plate body 401 outwardly protrude respectively, and it is viscous
Setting is connect to protrude close to 301 side of fixed column on anchor ring and for limiting the fixed support bullet in the mounting ring 405
The spring retainer ring 406 of spring 302, the promotion column 403 be hollow cylinder, and be spirally connected be arranged in the mounting ring 405 different from
It is arranged on the outer side ring surface of the spring retainer ring 406.
In the present embodiment, the mounting ring 405 is used to guarantee the jack-up position-limiting action of the spring retainer ring 406, with
And the installation effect that is spirally connected for pushing column 403, wherein the spring retainer ring 406 being bonded, the promotion column 403 being spirally connected
It can be acted by the position adjusting of itself, so that the sealing circle body 102 inwardly pushes the starting position of the plate body 401
And push process can flexible modulation, the purpose of the adjusting be exactly can be protruding to for bending engaging pole unit 5 described in
The amplitude for being suitable on the outside of axial groove 2, and the engaging stablized with the fixed pole unit 6, be suitable for.
Bending engaging pole unit 5 includes being arranged on 2 inner side surface of axial groove and long axial with the maintenance
The circumferential parallel inserting column 501 of sealed tube 12, is arranged at 401 upper end position of plate body and inserts for the inserting column 501
The inclination elastic piece 503 and both ends that the inserting column 501 is arranged in the spliced eye 502 entered, two apertures and socket are set respectively
It sets on two inclination 503 sides of elastic piece and for outwardly protruding the engaging column engaged with the fixed pole unit 6
504, the outboard end of two inclination elastic pieces 503 is adhesively fixed.The lower side difference of two inclination elastic pieces 503
It is against on 2 inner side surface of 401 side of plate body and the axial groove, the inserting column 501 is quadrangular, the inclination elasticity
Hole shape on piece 503 is rectangle corresponding with the inserting column 501.The engaging column 504 is cylinder.
In the present embodiment, the application method and advantage of the bending engaging pole unit 5 are as follows:
First, when initial the plate body 401 be located at axial position in the axial groove 2 compared with outside, two inclinations elasticity
Piece 503 more flattens, and the slanted angle between the inserting column 501 is smaller, and the engaging column 504 is in inside contract mode bit at this time
In in the axial groove 2；
Second, after the plate body 401 is inwardly pushed by the sealing circle body 102, two 503 lower ends of inclination elastic piece point
It does not resist and is bent big larger to intermediate compression, the engaging column 504 is outwardly protruded to the fixed pole unit 6 at this time
On, it completes to be connected together, on the basis of guaranteeing that the closing cap 13 has the first weight friction grip at the sealing circle body 102
Also there is the axial effect that is connected together；
Third, wherein the snap-in function of engaging column 504 triggering and the fixed pole unit 6, is that the closing cap 13 is socketed
Link generation simultaneously when the maintenance sealed tube 12, the compression sealing circle body 102, this, which allows for snap action, has reaction
Sensitive, good without operation bidirectional and whole engaging effect advantage, finally when the closing cap 13 is taken off, in the support
Under the jack-up of spring 302 pushes, the plate body 401 restores the original state close to outside, i.e., " has stretched flattening " described in two
Elastic piece 503 is tilted, the engaging column 504 departing from coming back to the axial groove 2 after the fixed pole unit 6 in turn
It is interior, therefore the jack-up elastic force needs of the support spring 302 are corresponding larger.
The fixed pole unit 6 includes the parallel mounting post 601 of a pair being arranged in 13 inside bottom surface of closing cap, with
And it is arranged on parallel 601 lower end surface of mounting post and is fixed for axial limiting after engaging to the engaging column 504
Sphere 602.The axial groove 2, circumferential support unit 3, sliding plate unit 4, bending engaging pole unit 5 and fixed pole unit
6 number of locations is arranged in a one-to-one correspondence, total 2-5 group.The quantity of the circumferential support unit 3 is on the sliding plate unit 4
2-3, setting is at the plate body 401 length is axially closer to 2 inner side of axial groove.
In the present embodiment, two spheres 602 are corresponded with a number of positions for engaging column 504, because
The socket angle of this closing cap 13 needs suitably rotation adjustment, and the setting of the length of the parallel mounting post 601 needs completely
The foot engaging column 504 is just against in 13 inside bottom surface of closing cap after snapping onto two 602 inside middles of sphere,
Guarantee to shake after the engaging column 504 is caught in.
Bonding is equipped with the axial direction for assisting the sealing circle body 102 on the maintenance 12 exterior annular transverse plane of sealed tube
Sealing ring 7, the outer side edges of the axial sealing ring 7 are located at 2 inside of axial groove.
In the present embodiment, the axial sealing ring 7 on the inside of the axial groove 2 for being bonded the maintenance sealed tube 12
13 inside bottom surface of end face and the closing cap, even if so that hydraulic oil will leak out the tank body of oil tank 11, it the first excessively described axial direction
Sealing ring 7 guarantees there is double sealing effect at the service hatch after the sealing circle body 102.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned embodiment party
Formula within the scope of knowledge possessed by those of ordinary skill in the art can also be before not departing from present inventive concept
It puts and makes various modifications.These be all without creative modification, as long as in scope of the presently claimed invention all by
To the protection of Patent Law.
Claims (10)
1. service hatch, grafting on the tank body of oil tank (11) is arranged in a kind of excavator hydraulic oil case, including tank body of oil tank (11)
Maintenance sealed tube (12) in the service hatch, and closing cap of the socket setting on maintenance sealed tube (12) are set
(13), it is characterised in that: further include sealing coil unit (1) of the setting on described maintenance sealed tube (12) outer ring surface, setting exists
Axial groove (2) on described maintenance sealed tube (12) tube wall, the circumferential support unit (3) being arranged in the axial groove (2) are inserted
Enter in the axial groove (2) and lower end socket setting is on the circumferential support unit (3) and through the sealing coil unit (1)
It is arranged to the interior way of propelling with the sliding plate unit (4) for circumferential direction sliding in the axial groove (2) interior upper end position after compression
Place is simultaneously bent and protruded the bending card on the outside of the axial groove (2) by the circumferential slid inward of sliding plate unit (4)
Zygostyle unit (5), and be arranged on the closing cap (13) medial surface and be used to engage pole unit to the bending outstanding
(5) the fixation pole unit (6) of arcwall face engaging and then the fixed closing cap (13) of axial limiting is carried out.
2. a kind of excavator hydraulic oil case according to claim 1, it is characterised in that: the sealing coil unit (1) includes
Annular mounting groove (101) on described maintenance sealed tube (12) outer ring surface is set, and is covered in the annular mounting groove (101)
Sealing circle body (102) that is upper and outwardly protruding, the section of sealing circle body (102) be it is trapezoidal, the trapezoidal bevel edge is outside
Protrude and be used to receive the pushing of the closing cap (13) lower end inside seamed edge；The circumferential direction support unit (3) includes that setting exists
Fixed column (301) on axial groove (2) inner side surface, and socket are arranged on the fixed column (301) and are used for ring
To the support spring (302) for jacking up sliding plate unit (4) outward；The sliding plate unit (4) include it is long axial with it is described
Sealed tube (12) axial parallel plate body (401) is repaired, is arranged on the sliding plate unit (4) and is used for the fixed column
(301) the plate body aperture (402) of grafting, and be arranged on the plate body (401) lateral surface and pass through the annular mounting groove
(101) aperture and the promotion column for receiving the inside impetus of sealing circle body (102) between the axial groove (2)
(403).
3. a kind of excavator hydraulic oil case according to claim 2, it is characterised in that: the sliding plate unit (4) is also wrapped
Include the plate body inner ring (404) for being used to form the plate body aperture (402), inside and outside annular surface respectively with the plate body inner ring
(404) it is arranged with the plate body (401) bonding and the mounting ring (405) that outwardly protrudes of two sides, and bonding in the installation
Spring of the ring (405) on the protrusion anchor ring of the fixed column (301) side and for limiting the fixed support spring (302)
Stop collar (406), the promotion column (403) are hollow cylinder, and are spirally connected and are arranged in the mounting ring (405) different from setting institute
On the outer side ring surface for stating spring retainer ring (406).
4. a kind of excavator hydraulic oil case according to claim 2, it is characterised in that: the bending engages pole unit (5)
Including being arranged on the axial groove (2) inner side surface and long axial inserting column parallel with maintenance sealed tube (12) circumferential direction
(501), spliced eye (502) of the setting at the plate body (401) upper end position and for the inserting column (501) insertion, two
A aperture and be socketed setting be separately positioned on described in two in the inclination elastic piece (503) of the inserting column (501) and both ends
On inclination elastic piece (503) side and for outwardly protruding the engaging column (504) engaged with the fixed pole unit (6), two
The outboard end of inclination elastic piece (503) is adhesively fixed.
5. a kind of excavator hydraulic oil case according to claim 4, it is characterised in that: two inclination elastic pieces
(503) lower side is against respectively on the plate body (401) side and the axial groove (2) inner side surface, the inserting column
It (501) is quadrangular, the hole shape on inclination elastic piece (503) is rectangle corresponding with the inserting column (501).
6. a kind of excavator hydraulic oil case according to claim 4, it is characterised in that: the engaging column (504) is cylinder.
7. a kind of excavator hydraulic oil case according to claim 4, it is characterised in that: the fixed pole unit (6) includes
The parallel mounting post (601) of a pair being arranged in the closing cap (13) inside bottom surface, and be arranged in the parallel mounting post
(601) sphere (602) fixed on lower end surface and for axial limiting after engaging to engaging column (504).
8. a kind of excavator hydraulic oil case according to claim 1, it is characterised in that: the axial groove (2), circumferential support
Unit (3), the number of locations for sliding plate unit (4), bending engaging pole unit (5) and fixed pole unit (6) correspond
Setting, total 2-5 group.
9. a kind of excavator hydraulic oil case according to claim 2, it is characterised in that: institute on the sliding plate unit (4)
The quantity for stating circumferential support unit (3) is 2-3, and setting is long axially closer in the axial groove (2) in the plate body (401)
At side position.
10. a kind of excavator hydraulic oil case according to claim 2, it is characterised in that: the maintenance sealed tube (12) is outside
Bonding is equipped with the axial sealing ring (7) for assisting sealing circle body (102), the axial sealing ring on side ring shape transverse plane
(7) outer side edges are located on the inside of the axial groove (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910372228.6A CN109989444B (en) | 2019-05-06 | 2019-05-06 | Hydraulic oil tank of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910372228.6A CN109989444B (en) | 2019-05-06 | 2019-05-06 | Hydraulic oil tank of excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109989444A true CN109989444A (en) | 2019-07-09 |
| CN109989444B CN109989444B (en) | 2023-10-10 |
Family
ID=67135898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910372228.6A Active CN109989444B (en) | 2019-05-06 | 2019-05-06 | Hydraulic oil tank of excavator |
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| Country | Link |
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| CN (1) | CN109989444B (en) |
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