CN103255787A - Expansion rod and deep drilling machine - Google Patents
Expansion rod and deep drilling machine Download PDFInfo
- Publication number
- CN103255787A CN103255787A CN2013100579560A CN201310057956A CN103255787A CN 103255787 A CN103255787 A CN 103255787A CN 2013100579560 A CN2013100579560 A CN 2013100579560A CN 201310057956 A CN201310057956 A CN 201310057956A CN 103255787 A CN103255787 A CN 103255787A
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- China
- Prior art keywords
- hydraulic cylinder
- expansion link
- inner core
- grab bucket
- dipper
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- 238000005553 drilling Methods 0.000 title abstract 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 22
- 230000008602 contraction Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000009412 basement excavation Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 6
- 230000027455 binding Effects 0.000 description 5
- 238000009739 binding Methods 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 239000004519 grease Substances 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 241000602850 Cinclidae Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/304—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with the dipper-arm slidably mounted on the boom
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/306—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with telescopic dipper-arm or boom
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
- E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
- E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping
-
- 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
- E02F9/14—Booms only for booms with cable suspension arrangements; Cable suspensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/40—Special vehicles
- B60Y2200/41—Construction vehicles, e.g. graders, excavators
- B60Y2200/412—Excavators
Abstract
The invention provides an expansion rod with a built-in hydraulic cyliner, and a deep drilling machine. The expansion rod, through a simple structure, enables mounting strength of the hydraulic cyliner to be ensured, and the expansion rod and an open-close type grab are prevented from falling even when the expansion rod is damaged. The expansion rod comprises an upper bracket (20) that is arranged on the top end of an outer cylinder (18a) and is connected with a bucket rod via pins, and a lower bracket (21) that is arranged at the bottom of an inner cylinder (18b) and is connected with the open-close type grab via pins. Openings (20e, 21e), penetrating along the expansion direction of the expansion rod (18), are respectively disposed on the brackets (20, 21). An cylinder bottom end portion of an expansion hydraulic cyliner (17) is inserted in the opening (20e) of the upper bracket (20) and is connected with the upper bracket (20) via a pin. An end portion of a piston rod of the expansion hydraulic cyliner (17) is inserted in the opening (21e) of the lower bracket (21) and is connected with the lower bracket (21) via a pin.
Description
Technical field
The present invention relates to be installed in floppily the expansion link on the dipper of self-propelled working machine and use the excavator that deep-cuts of this expansion link.
Background technology
For example in patent documentation 1, put down in writing a kind of excavator, from the dipper of self-propelled working machine expansion link has been installed, in the lower end of this expansion link clamshell bucket has been installed and excavates.Employed expansion link will be being housed in inside by the telescopic hydraulic cylinder that hydraulic cylinder constitutes in this excavator, one end of this telescopic hydraulic cylinder is attached in the tube portion of the urceolus that constitutes expansion link by pin, and the mode that the other end is attached at by pin in the tube portion of inner core is installed.
Technical literature formerly
Patent documentation 1: the real fair 3-30436 communique of Japan
But, be attached to the structure in the past in the tube portion of tubular expansion link by pin according to the above-mentioned telescopic hydraulic cylinder that will be housed in like that in the expansion link, be limited the reason that waits based on the thickness of slab of the tube portion of expansion link because of regulation, the structure of the script by expansion link is difficult to obtain the needed intensity of telescopic hydraulic cylinder linking part.Thus, weld the linking part that stiffener constitutes telescopic hydraulic cylinder in tube portion, still, have the problem points of the structure complicated of making.
Summary of the invention
The present invention is point in view of the above problems, and the built-in expansion link of a kind of telescopic hydraulic cylinder to be provided and to use the excavator that deep-cuts of this expansion link to be purpose, this expansion link can be guaranteed the installation strength of telescopic hydraulic cylinder by simple structure.
Expansion link of the present invention, it constitutes, and is installed in floppily on the dipper of self-propelled working machine, and the open and close type grab bucket is installed in the lower end, and urceolus and inner core is chimeric in the mode that can stretch, and telescopic hydraulic cylinder is housed in inside, it is characterized in that,
On the upper end of being located at described urceolus and the bracket that links by pin and described dipper and be located at the lower end of described inner core and the bottom bracket that described open and close type grab bucket linked by pin on, be respectively equipped with the peristome that runs through along the flexible direction of described expansion link,
In being located at the described peristome of described bracket, be interspersed with an end of described telescopic hydraulic cylinder, and link by pin and described bracket,
In being located at the described peristome of described bottom bracket, be interspersed with the other end of described telescopic hydraulic cylinder, and link by pin and described bottom bracket.
In addition, expansion link of the present invention is characterised in that,
The shape of cross section of described urceolus and described inner core is rectangular,
Make the pin-and-hole that is attached at the described bracket on the described dipper towards, with the pin-and-hole that is attached at the described bottom bracket in the described open and close type grab bucket towards quadrature.
In addition, expansion link of the present invention is characterised in that, further,
On the inner face of the bottom of described urceolus, be provided with the retainer that prevents that described inner core from deviating from,
On the outside of the upper end of described inner core, be provided with described retainer butt and prevent the fastening parts that described inner core is deviate from.
In addition, expansion link of the present invention is characterised in that, further,
Be provided with the contiguous block that connects in mode that can dismounting for the hydraulic hose that extends from described dipper side on the top of described urceolus,
In described contiguous block, be provided with the branch branch road, branch road branched into to the oil circuit of described telescopic hydraulic cylinder and the oil circuit of grabbing bucket to described open and close type in described minute, and, be provided with sequence valve in described contiguous block, the on-off action that described sequence valve makes the grab bucket of described open and close type carries out in the mode prior to the expanding-contracting action of described telescopic hydraulic cylinder.
The excavator that deep-cuts of the present invention is characterized in that, at the front end as the flexible dipper of described dipper described expansion link is installed.
The effect of invention
Expansion link of the present invention constitutes, the dipper side end that will be built in the telescopic hydraulic cylinder in the expansion link by pin is attached on the bracket of expansion link, the piston rod side end is linked on the bottom bracket as open and close type grab bucket linking part of expansion link by pin, the high-intensity parts that bracket and bottom bracket are established in order to link originally exactly, therefore, do not need the structure of complexity that the strengthening part that be used for to link telescopic hydraulic cylinder etc. is welded etc., and can constitute the linking part of telescopic hydraulic cylinder by simple structure.
In addition, protected by expansion link owing to constitute telescopic hydraulic cylinder, so can prevent the damage of telescopic hydraulic cylinder.
In addition, because the two ends of telescopic hydraulic cylinder are connected on the carriage up and down of expansion link, so, can increase the flexible stroke of expansion link.
In addition, in expansion link of the present invention, be rectangle by the cross sectional shape that makes described urceolus and described inner core, and can inner core do not reversed with respect to urceolus as being the circular situation.Thus, can then can not prevent the damage of hydraulic hose based on reversing to the excessive power of hydraulic hose effect of adding on expansion link.
In addition, make the corner portion that is positioned at inner core for the connector on the periphery that is located at cylinder barrel with the piston rod chamber binding of telescopic hydraulic cylinder, thus, can compare with small-sized formation for circular situation with making urceolus, inner core.In addition, because make respectively with expansion link and dipper and open and close type grab bucket link towards becoming the direction of intersecting, so can make open and close type grab bucket and expansion link swing by the external force that acts in the open and close type grab bucket, can prevent that excessive power is passed on open and close type grab bucket and the expansion link, and prevent their damage.In addition, because can guarantee and the interchangeability of hanging the carriage that hangs down of having established, so can use as back dress annex.
In addition, in expansion link of the present invention, inner face in the bottom of urceolus is provided with the retainer that prevents that inner core from deviating from, be provided with the retainer butt in the outside of the upper end of inner core and prevent the fastening parts that inner core is deviate from, thus, lose even suppose telescopic hydraulic cylinder, inner core can not break away from from urceolus yet, can prevent the whereabouts of open and close type grab bucket, improve safety thus.
In addition, in expansion link of the present invention, be provided with on the top of urceolus for the hydraulic hose that extends from flexible dipper side with the contiguous block that mode that can dismounting connects, in this contiguous block, be provided with and branch into to the oil circuit of telescopic hydraulic cylinder and the sequence valve set to the job order of branch branch road, split closed grab bucket and the telescopic hydraulic cylinder of the oil circuit of grab bucket.If this structure, then under expansion link reinstalls to situation on the existing flexible dipper, can directly be connected on the described contiguous block adding in advance at the hydraulic hose on the dipper, then can directly use existing hydraulic hose, can easily be applicable to existing flexible dipper.
The excavator that deep-cuts of the present invention is installed to described expansion link on the flexible dipper, can access the effect that produces based on the structure of the expansion link with above-mentioned each feature.
Description of drawings
Fig. 1 is with the digging operation STA representation lateral view that deep-cuts an embodiment of excavator of the present invention.
Fig. 2 is illustrated in the deep-cutting in the excavator of present embodiment, sand is loaded into the lateral view of carrying with the state in the vehicle.
Fig. 3 is the lateral view of the connecting structure of the expression telescopic hydraulic cylinder of present embodiment and grab bucket.
Fig. 4 is the lateral view of an example of structure of the clamshell bucket of expression present embodiment.
Fig. 5 (A) is the elevation of representing the expansion link of present embodiment with contraction state, (B) is its right side view.
Fig. 6 (A) is the left side view of representing the expansion link of present embodiment with contraction state, (B) is its longitudinal section.
Fig. 7 (A) is the upward view of the expansion link of present embodiment, (B) is the E-E sectional view of Fig. 5 (A).
Fig. 8 (A), (B) are respectively G portion, the H portion amplification views of Fig. 6 (B).
Fig. 9 (A) is the elevation of representing the expansion link of present embodiment with elongation state, (B) is its right side view.
Figure 10 (A) is the left side view of representing the expansion link of present embodiment with elongation state, (B) is its longitudinal section.
Figure 11 is the J portion amplification view of Figure 10 (B).
Figure 12 is the flexible and grab bucket exemplary plot that open and close, hydraulic circuit for the expansion link of present embodiment.
Figure 13 is the lateral view of other examples of the working rig of the expression expansion link that uses present embodiment.
Description of reference numerals
1 bottom driving body
2 whirligigs
3 upper rotating body
3a rotates framework
4 hydraulic power units
5 driver's cabins
6 counterweights
7 vertical holes
8 swing arms
9 swing arm hydraulic cylinders
10 flexible dippers
The outer dipper of 10a
10b central authorities dipper
Dipper in the 10c
14 dipper hydraulic cylinders
16 clamshell buckets
17 telescopic hydraulic cylinders
The 17a cylinder barrel
The 17b piston rod
18 expansion links
The 18a urceolus
The 18b inner core
19,22,23,24 pins
20 bracket
The 20a end plate
The 20b linking part
The 20e peristome
21 bottom brackets
The 21a end plate
The 21b linking part
The 21e peristome
25 contiguous blocks
26,27 hydraulic hoses
30 hydraulic pipings
32a, 32b hydraulic hose
36 grab bucket hydraulic cylinders
The 36a piston
The 36b piston rod
The 36c cylinder barrel
36d opens the side room
The closed side room of 36e
40 frameworks
41 shells
43 armites
47 Main Hydraulic Pumps
48 guide's hydraulic pumps
50 control valves
51 pilot valves
53 first pipelines
53A opens lateral line
53B elongate sides pipeline
54 second pipelines
54A closed side pipeline
54B contraction side pipeline
58A, 58B, 58C1,58C2 sequence valve
59A, 59B, 59C1,59C2 flap valve
60 bypass lines
61 first roddings
62 flap valve
63 carry the objective table with vehicle
64 sands
65 guide's flap valve
66 first roddings
70 stop valves
71 grab bucket overflow valves
78 hose guide parts
79a, 79b hydraulic hose
80,81 lead-frame
83 covers
84～87 bearer bars
88,89 grab bucket connection pipe arrangements
90 sliding panels (fastening parts)
91 retainers
95 sliding panels
98 retainers
The specific embodiment
Fig. 1, Fig. 2 are respectively with the excavation state with to carrying the lateral view of having represented to be suitable for an example of deep-cutting excavator of expansion link of the present invention with the state of vehicle loading sand.In Fig. 1, Fig. 2,1 is the bottom driving body, the 3rd, be arranged on upper rotating body on this bottom driving body 1 via whirligig 2.This upper rotating body 3 constitutes in the mode that hydraulic power unit 4, driver's cabin 5 and counterweight 6 etc. is equipped on the rotation framework 3a.Constitute excavator main body as driving carriage by bottom driving body 1 and upper rotating body 3.In addition, as shown in Figure 1, driver's cabin 5 can be along moving forward and backward, and by making this driver's cabin 5 forwards mobile when the digging operation, and can make the excavation position of operator's visual confirmations in the vertical hole 7 in the driver's cabin 5.
The 8th, can be installed in the swing arm on the rotation framework 3a by the mode that swing arm hydraulic cylinder 9 rises and falls.The 10th, flexible dipper in this embodiment, directly is equipped with flexible dipper 10, but also has the situation that on-telescopic dipper (not shown) has been installed on swing arm 8.
Be somebody's turn to do flexible dipper 10 so that the mode that outer dipper 10a, central dipper 10b and interior dipper 10c are combined as extension type constitutes.As shown in Figure 2, the dipper 10 that should stretch is attached at outer dipper 10a by pin 11 front end of swing arm 8, by pin 12,13 modes that two ends are linked dipper hydraulic cylinder 14 being installed between outer dipper 10a and the swing arm 8, can be by this dipper hydraulic cylinder 14 stretch to change the angle of slope of dipper 10 with respect to swing arm 8 of stretching.
The 16th, clamshell bucket, 18 are provided in a side of the interior dipper 10c of flexible dipper 10 and the expansion link between the clamshell bucket 16, and the 17th, be built in the telescopic hydraulic cylinder as hydraulic cylinder in this expansion link 18.
Fig. 3 is the lateral view that amplifies the structure of expression clamshell bucket (hereinafter referred to as grab bucket) 16 and expansion link 18.As shown in Figure 3, expansion link 18 so that inner core 18b can the mode flexible with respect to urceolus 18a make up.Fixedly there is bracket 20 upper end at urceolus 18a by welding etc.By towards about pin 19 can making the mode of expansion link 18 swings, the interior dipper 10c with flexible dipper 10 links with this bracket 20.By welding etc. bottom bracket 21 is arranged fixedly in the lower end of inner core 18b, with respect to this bottom bracket 21, link can make grab bucket 16 modes that swing with respect to expansion link 18 by the pin 22 towards front and back.
Telescopic hydraulic cylinder 17 is attached at its cylinder bottom side end on the bracket 20 by the pin 23 towards left and right directions.The piston rod side end of telescopic hydraulic cylinder 17 is attached on the bottom bracket 21 by the pin 24 towards fore-and-aft direction.
In this structure, when telescopic hydraulic cylinder 17 was shunk, the bottom of grab bucket 16 became the lifting position shown in the H, when making telescopic hydraulic cylinder 17 elongations, became the down position shown in the L, can carry out the length of telescopic hydraulic cylinder 17 is increased in interior deep-cutting.
Fig. 4 structure of 16 of representing to grab bucket.The grab bucket 16 of this embodiment hydraulic cylinder 36 of will grabbing bucket is located at central part, and this grab bucket hydraulic cylinder 36 has and piston 36a is fixed on pars intermedia and can make cylinder barrel 36c with respect to the piston rod 36b structure of the moving outer embedding of mode up and down.In addition, this piston rod 36b also plays the effect of the supporting mass of shell 41 described later.This grab bucket hydraulic cylinder 36 is by the piston 36a in the cylinder barrel 36c, forms airtight side room (in 16 grease chambeies that supply with work oil when opening of will grab bucket) 36d and closed side room (grease chamber of supply work oil in the time will the grab bucket 16 closures) 36e of opening respectively in the upper and lower.
By welding etc. framework 40 arranged fixedly in the lower end of the piston rod 36b of grab bucket hydraulic cylinder 36.On this framework 40, with the mode pivotal mounting that can open and close a pair of shell 41,41 is arranged by pin 42,42.The 43rd, by the moving armite that shell 41 is opened and closed up and down of cylinder barrel 36c, these armites 43 link upper end and cylinder barrel 36c by pin 44, by pin 45 lower end and shell 41 are linked.
Next specify expansion link 18 by Fig. 5～Figure 11.Fig. 5～Fig. 8 represents the state that expansion link 18 shrinks, and Fig. 9～Figure 11 represents the state of expansion link 18 elongations.
Shown in Fig. 7 (B), the urceolus 18a of expansion link 18, the cross sectional shape of inner core 18b are rectangular.As Fig. 5, shown in Figure 6, bracket 20 is made of the end plate 20a on the upper surface that is welded on urceolus 18a and the linking part 20b that constitutes by the two Zhang Ping's andantes that are welded on this end plate 20a.Shown in Fig. 6 (A), have the pin-and-hole 20c that links with flexible dipper 10 for passing through above-mentioned pin 19 and be used for passing through pin 23 with the pin-and-hole 20d of cylinder barrel 17a (with reference to Fig. 6 (B)) the side end binding of telescopic hydraulic cylinder 17 at linking part 20b.
Shown in Fig. 6 (B), be provided with towards the peristome 20e of the flexible direction opening of expansion link 18 at end plate 20a, in this peristome 20e, be interspersed with the cylinder barrel 17a side end of telescopic hydraulic cylinder 17, and the lug boss of its cylinder bottom side end is attached on the linking part 20b by pin 23.
In addition, as Fig. 5, shown in Figure 6, bottom bracket 21 is made of the end plate 21a on the lower surface that is welded on urceolus 18b and the linking part 21b that constitutes by the two Zhang Ping's andantes that are welded on this end plate 21a.Shown in Fig. 5 (A), have for the pin-and-hole 21c of 16 bindings of will grabbing bucket by above-mentioned pin 22 with for passing through the pin-and-hole (not shown) that the end of pin 24 with the piston rod (with reference to Fig. 6 (B)) of telescopic hydraulic cylinder 17 links at linking part 21b.
Shown in Fig. 6 (B), be provided with towards the peristome 21e of the flexible direction opening of expansion link 18 at end plate 21a, in this peristome 21e, be interspersed with the piston rod 17b side end of telescopic hydraulic cylinder 17, and the lug boss of the end of this piston rod is attached on the linking part 21b by pin 24.
In Fig. 5, Fig. 6, the 25th,, the hydraulic piping that arranges in the mode that is fixed to the upper side of urceolus 18a by bolt etc. connects the contiguous block of usefulness.This contiguous block 25 has connector 25a (with reference to Fig. 6 (B)) in its two sides, the other end that this connector 25a is connected an end hydraulic hose (not shown) on the interior dipper 10c of flexible dipper 10 connects.This contiguous block 25 is built-in with in Figure 12 sequence valve 58A described later, 58B, 58C1,58C2 and flap valve 62,65 etc.
In Fig. 5 (A), Fig. 6 (B), the 26th, for the hydraulic hose of supplying with work oil and contiguous block 25 being connected with the cylinder bottom chamber to the cylinder bottom chamber of telescopic hydraulic cylinder 17, the 27th, the hydraulic hose that contiguous block 25 is connected with connector 28 on the cylinder barrel 17a side end that is located at hydraulic cylinder 17.The 29th, for the protection of these hydraulic hoses 26,27 and be installed in the cover of the front of urceolus 18a in the mode with these coverings.In Fig. 6 (B), the 30th, for supplying with work oil to the piston rod chamber of telescopic hydraulic cylinder 17 and with above-mentioned connector 28 be located at the hydraulic piping that connects between the connector 31 on the piston rod side end of cylinder barrel 17b of telescopic hydraulic cylinder 17.
In Fig. 5 (A), Fig. 6 (A), 32a, 32b are the hydraulic hoses that the connector 34 with contiguous block 25 and the lower end that is located at urceolus 18a is connected, and these hydraulic hoses 32a, the 32b oil content that is used for work is not supplied to grab bucket 16 the above-mentioned 36d of grease chamber, 36e.
In Fig. 5 (A), the 77th, be located at the connector of hydraulic piping of the lower end of inner core 18b in couples with above-mentioned connector 34, be installed in above-mentioned connector 34 and this connector 77 of the lower end of urceolus 18a, connect via hydraulic hose 79a, the 79b (with reference to Fig. 7 (B)) that arrange in interspersed modes to the hose guide part 78 shown in Fig. 5 (A) and Fig. 6 (B).These hydraulic hoses 79a, 79b are to arrange with above-mentioned hydraulic hose 32a, 32b ways of connecting respectively.Hose guide part 78 constitutes, and can distinguishing the mode of warpage predetermined angular, the adjacent screw of the case shape that will pass through from hydraulic hose 79a, 79b is connected to each other.This hose guide part 78 is with a side of the lower end that an end is connected urceolus 18a, and the other end is installed by the mode that the installing plate 82 that is installed in the lower end of inner core 18b shown in Fig. 5 (A), (B) links.
In Fig. 5 (A), Fig. 6 (A), the 80, the 81st, be located at the lead-frame of both sides of the front of urceolus 18a for guiding hose guiding piece 78.The bearer bar 84,85 of the front of these lead- frame 80,81 by being installed in urceolus 18a is installed.Bearer bar 84,85 plays the effect of protection hose guide part 78 when expansion link 18 collides with object.The 83rd, for the bend 78a (with reference to Fig. 6 (A), (B)) of the U font of protecting contiguous block 25 and hose guide part 78 and be installed in the cover of the front of urceolus 18a in the mode with these coverings.Front at this cover 83 also is equipped with bearer bar 86.In addition, shown in Fig. 6 (A), Fig. 7 (A), (B), also be provided with bearer bar 87 in the side that has additional hydraulic hose 32a, 32b of urceolus 18a.In Fig. 7 (A), the 88, the 89th, for respectively with the connection pipe arrangement of grab bucket 16 the 36d of grease chamber, hydraulic hose (not shown) that 36e is connected.
Next, the anti-locking mechanism in whereabouts of the grab bucket 16 when telescopic hydraulic cylinder 17 contingency are damaged is described.Fig. 8 (A) is the G portion amplification view of Fig. 6 (B), as shown in the drawing, exterior upper portion at inner core 18b, to be welded on retainer 91 clampings up and down on the inner core 18b, stop the movement of the flexible direction of expansion link 18 thus, and be fixed on the inner core 18b by bolt 92, nut 93, about preventing thus (with respect to paper vertical oppositely) the mode of movement be provided with the sliding panel 90 that slides at the inner face of urceolus 18a.In addition, shown in Fig. 7 (B), in this embodiment, these sliding panels 90 are respectively arranged with two at each face of four faces of inner core 18b.
Fig. 8 (B) is the H portion amplification view of Fig. 6 (B), as shown in the drawing, lower inner face at urceolus 18a, in the mode of sliding panel 95 being clamped by the retainer 98 that is fixed on the コ font on the installing plate 96 by bolt 97, and under the state of the movement that stops left and right directions (with respect to the vertical direction of paper) by the not shown welding assembly on the inner face that is welded on urceolus 18a, be equipped with the outside butt of inner core 18b and the sliding panel 95 that slides, this installing plate 96 is welded in the external surface of urceolus 18a.These sliding panels 95 along on the relative position of the flexible direction of expansion link 18, are respectively equipped with two at each face (four faces) with respect to the sliding panel 90 that is located on the inner core 18b.In Fig. 8 (B), 99 are provided in a side of the sliding panel on the external surface of piston rod side end of cylinder barrel 17a of telescopic hydraulic cylinder 17, and inner core 18b is slided.
In this expansion link 18, when the contraction state from Fig. 5, Fig. 6 makes telescopic hydraulic cylinder 17 elongations, the sliding panel 90 of inner core 18b slides at the inner face of urceolus 18a, and the inner face of inner core 18b slides at the sliding panel 99 of the lower end of the cylinder barrel 17a of telescopic hydraulic cylinder 17, and, the external surface of inner core 18b is slided at the sliding panel of being located on the urceolus 18a 96, inner core 18b is descended, and arrival Fig. 9, elongation state shown in Figure 10.When the decline of this inner core 18b, sliding in hose guide part 78 lead-frame 81 of one side on being located at urceolus 18a descends on one side.
As shown in figure 11, when telescopic hydraulic cylinder 17 was stretched to the stroke end, the sliding panel of being located on the external surface of inner core 18b 90 approached with respect to the sliding panel 95 on the inner face of being located at urceolus 18a, and in the face of the flexible direction of expansion link 18.Thus, even just in case telescopic hydraulic cylinder 17 is lost, and sliding panel 90 and retainer 91 can play a role with the fastening parts of retainer 98 butts of sliding panel 95 in conduct, can prevent inner core 18b thus or grab bucket 16 whereabouts.
Next, one example of the hydraulic circuit that deep-cuts excavator that uses this expansion link 18 is described by Figure 12.In Figure 12,47 are included in the Main Hydraulic Pump in the hydraulic power unit 4, and this hydraulic power unit 4 is equipped on the rotation framework 3a of excavator main body on Fig. 1, ground shown in Figure 2, and 48 similarly are included in the guide's hydraulic pump in the hydraulic power unit 4.The 50th, the control valve with grab bucket 16 opens and closes in the present embodiment, is used for the flexible of flexible hydraulic pump 17 with this control valve 50.The 51st, the pilot valve for this control valve 50 of operation has action bars 51a, and, the switch 51b with function described later is installed at this action bars 51a.
The 53rd, be connected first pipeline on the secondary side port A of a side of control valve 50, the 54th, be connected second pipeline on the secondary side port B of opposite side.First pipeline 53 branches into pipeline 53A and pipeline 53B.Pipeline 53A is the lateral line of opening that side room 36d (with reference to Fig. 4) is connected of opening with grab bucket hydraulic cylinder 36.Pipeline 53B is the elongate sides pipeline that is connected with the cylinder bottom chamber 17c of telescopic hydraulic cylinder 17.
Second pipeline 54 branches into pipeline 54A and pipeline 54B.Pipeline 54A is the closed side pipeline that is connected with the closed side room 36e of grab bucket hydraulic cylinder 36.54B is the contraction side pipeline that is connected with the piston rod chamber 36e of telescopic hydraulic cylinder 17.56,57 is respectively the overload overflow valve that the highest hydraulic pressure of first pipeline 53 and second pipeline 54 is set, and its operating pressure for example is 35MPa.
58A is provided in a side of the sequence valve on the elongate sides pipeline 53B of telescopic hydraulic cylinder 17, and 59A is the flap valve that is set up in parallel with this sequence valve 58A.With control valve 50 handover operations to right positions, and when having supplied with work oil via above-mentioned first pipeline 53 simultaneously to the cylinder bottom chamber 17c that opens side room 36d and telescopic hydraulic cylinder 17 of grab bucket 16 grab bucket hydraulic cylinder 36, this sequence valve 58A makes grab bucket 16 take the lead in opening.
58B is provided in a side of the sequence valve on the contraction side pipeline 54B of telescopic hydraulic cylinder 17, and 59B is the flap valve that is set up in parallel with this sequence valve 58B.With control valve 50 handover operations to leftward position, and when having supplied with work oil via above-mentioned second pipeline 54 simultaneously to the piston rod chamber 17d of the closed side room 36e of grab bucket 16 grab bucket hydraulic cylinder 36 and telescopic hydraulic cylinder 17, this sequence valve 58B makes grab bucket 16 closure that takes the lead in.
The 60th, with the cylinder bottom chamber 17c of telescopic hydraulic cylinder 17 and the bypass line of piston rod chamber 17d binding, 58C1,58C2 are the sequence valves that arranges at this bypass line 60 with being connected in series, be used for when the elongation of telescopic hydraulic cylinder 17, making the work oil of piston rod chamber 17d flow back into cylinder bottom chamber 17c.59C1,59C2 are the flap valve that is set up in parallel respectively with these sequence valves 58C1,58C2.62 are provided in a side of the piston rod chamber 17d of telescopic hydraulic cylinder 17 and the flap valve between the sequence valve 58B, are used for making the work oil from piston rod chamber 17d only flow back into cylinder bottom chamber 17c side when making telescopic hydraulic cylinder 17 elongations.
The 61st, the first rodding of sequence valve 58C1,58C2, this elder generation's rodding 61 with among the contraction side pipeline 54B of telescopic hydraulic cylinder 17, be connected between sequence valve 58B and the flap valve 62 and between the pilot chamber of sequence valve 58C1,58C2.For when telescopic hydraulic cylinder 17 shrinks, the operating pressure that improves sequence valve 58C1, the 58C2 of above-mentioned backflow usefulness is guaranteed the working oil pressure that applies to piston rod chamber 17d, and telescopic hydraulic cylinder 17 is shunk, thereby this elder generation's rodding 61 is set.
The 65th, the guide's flap valve between the cylinder bottom chamber 17c among the elongate sides pipeline 53B of telescopic hydraulic cylinder 17, that be located at sequence valve 58A and telescopic hydraulic cylinder 17.The 66th, the first rodding of guide's flap valve 65, this elder generation's rodding 66 will be located at sequence valve 58B among the contraction side pipeline 54B of telescopic hydraulic cylinder 17 and the hydraulic pressure between the flap valve 62 as first pilot and apply to the pilot chamber of guide's flap valve 65, and under the situation of the hydraulic pressure with this elder generation's rodding, the work oil in the permission guide flap valve 65 is to reverse flow.
The 70th, stop valve, the 71st, with this stop valve 70 be connected in series open the time maximum pressure set with the grab bucket overflow valve, the 72nd, with these grab bucket overflow valve 71 flap valve that are connected arranged side by side.The grab bucket that these valves 70～72 are located at control valve 50 is opened between the secondary side port 53 and fuel tank 73 of side.The operating pressure of grab bucket overflow valve 71 is set than the operating pressure (for example 25MPa) low (for example 20MPa) of sequence valve 58A.In addition, the operating pressure that is located at the sequence valve 58B on the contraction side pipeline 54B of telescopic hydraulic cylinder 17 is identical with sequence valve 58A, perhaps is set at and value that it approaches.
The 74th, the pilot valve of stop valve 70, this pilot valve 74 are located at the grab bucket of the pilot valve 51 of control valve 50 and open between side secondary side pipeline 75 and the fuel tank 73.This pilot valve 74 is solenoid operated, when to being installed in switch 51b on the action bars 51a and carrying out opening operation of the pilot valve 51 of control valve 50, is energized among the electromagnetic valve 74a and switches to right positions from illustrated leftward position.
Deep-cutting by this under situation that excavator excavates, when with action bars 51a shown in Figure 6 during to the direction operation of arrow 76, guide's hydraulic oil from guide's hydraulic pump 48 to first rodding 75 that supply with from, and control valve 50 switched to right positions.Thus, be supplied to first pipeline 53 from the work oil of Main Hydraulic Pump 47 ejections, and what at first be supplied to grab bucket hydraulic cylinder 36 via pipeline 53A opens side room 36d, thus, cylinder barrel 36c rises and shell 41,41 rotates shown in double dot dash line centered by pin 42,42 upward, then grabs bucket 16 to open.
At this, as long as the operator does not carry out opening operation to switch 51b, stop valve 70 just is in illustrated lap position, and grab bucket overflow valve 71 is in the state that interdicts from the loop, and thus, grab bucket overflow valve 71 is inoperative.
Under this state, the sequence valve 58A that is located on the pipeline 53B of elongate sides of telescopic hydraulic cylinder 17 makes operating pressure to set by the mode that sequence valve 58A is opened opening 16 o'clock needed hydraulic pressure of grab bucket, thus, the 58A of sequence valve midway at grab bucket 16 opening action does not open, and then telescopic hydraulic cylinder 17 can not extend.When grab bucket 16 when being opened to maximum opening, the rising of the hydraulic pressure by first pipeline 53, sequence valve 58A opens, then telescopic hydraulic cylinder 17 elongations.Thus, when excavating the putting than deep-seated of vertical hole 7 shown in Figure 1, telescopic hydraulic cylinder 17 elongations under the open mode of grab bucket 16.Like this, under the state that makes telescopic hydraulic cylinder 17 elongations, make flexible dipper 10 elongations, perhaps under the state that flexible dipper 10 is extended, make telescopic hydraulic cylinder 17 elongations the biglyyest, thus, grab bucket 16 can be urged to the bottom in vertical hole 7.
At this, from Fig. 5, the state that together shrinks of expansion link 18 and telescopic hydraulic cylinder 17 as shown in Figure 6, during the state that arrive Fig. 9, extends as shown in Figure 10, the connector 77 of hydraulic piping that is located at the lower end of inner core 18b descends, therefore, hose guide part 78 slides in lead-frame 81 on one side, with laterally the bloat state that be prevented from descend on one side.Thereupon, the U oxbow 78a of portion of hose guide part 78 (with reference to Fig. 9 (A)) also descends.
Next, when the operator's operated pilot valve 51 in the driver's cabin 5 switches to leftward position with control valve 50, be supplied to second pipeline 54 from the work oil of Main Hydraulic Pump 47 ejections.At this, in common excavation, the operating pressure of sequence valve 58B is set in the mode that sequence valve 58B is opened by the 16 o'clock needed hydraulic pressure of grabbing bucket in closure, and thus, sequence valve 58B does not open, and then telescopic hydraulic cylinder 17 can not shrink.Thus, cylinder barrel 36c descends from the grab bucket open mode that the cylinder barrel 36c of grab bucket hydraulic cylinder 36 rises, and shell 41,41 rotates downwards centered by pin 42,42, and grab bucket 16 is closed and excavate.
When grab bucket 16 closures, the rising of the hydraulic pressure by second pipeline 54, sequence valve 58B is opened, thereupon, the rising of the hydraulic pressure by first rodding 66 is also opened guide's flap valve 65, simultaneously, before rodding 61 applies first pilot to the pilot chamber of sequence valve 58C1,58C2, the operating pressure that then makes sequence valve 58C1,58C2 raises and stops flowing of the work oil that passes through from sequence valve 58C1,58C2, the oil of then working is directed into piston rod chamber 17d, the work oil of cylinder bottom chamber 17c from guide's flap valve 65 by and flow out to fuel tank 73, then telescopic hydraulic cylinder 17 shrinks.
Like this, if become sand is accommodated in the grab bucket 16, and telescopic hydraulic cylinder 17 contracted states, then control valve 50 is back to the neutral position, and flexible dipper 10 is shunk, as illustrated in fig. 2, by grab bucket 16 being positioned at carry with on the objective table 63 of vehicle and control valve 50 is switched to leftward position again, 16 open and can will grab bucket under with the state of telescopic hydraulic cylinder 17 closures, and the sands that will grab bucket in 16 are loaded on the objective table 63.
On the other hand, if the operator carries out opening operation to switch 51b when grab bucket is opened, then never illustrated power supply and makes pilot valve 74 switch to right positions to the electromagnetic valve 74a energising of the pilot valve 74 of stop valve 70.Thus, because guide's hydraulic oil that side elder generation rodding 75 is opened in the grab bucket of pilot valve 51 from pilot valve 74 by being supplied to the operating room of stop valve 70, so stop valve 70 switches to the connection position on right side, and become grab bucket overflow valve 71 and be fed into state in the loop.
Like this, when switching at stop valve 70 under the state that is communicated with side, when grab bucket 16 becomes the state of opening the biglyyest, the hydraulic pressure of first pipeline 53 rises, but by the effect of grab bucket overflow valve 71, and the hydraulic pressure of first pipeline 53 is risen to more than the operating pressure that is set by this grab bucket overflow valve 71.At this, the operating pressure of this grab bucket overflow valve 71 is compared with the operating pressure of sequence valve 58A and is set lowlyer, and therefore, sequence valve 58A does not open, and telescopic hydraulic cylinder 17 can not extend.
As shown in Figure 3, the expansion link 18 of present embodiment constitutes, the cylinder bottom side end that will be built in the telescopic hydraulic cylinder 17 in the expansion link 18 by pin 23 is attached on the bracket 20 of expansion link 18, be linked on the bottom bracket 21 as open and close type grab bucket linking part of expansion link 18 by the end of pin 24 with piston rod, the high-intensity parts that bracket 20 and bottom bracket 21 are established in order to link originally exactly, therefore, do not need the structure of complexity that the strengthening part that be used for to link telescopic hydraulic cylinder 17 etc. is welded etc., and can constitute the linking part of telescopic hydraulic cylinder by simple structure.
In addition, protected by expansion link 18 owing to constitute telescopic hydraulic cylinder 17, so can prevent the damage of telescopic hydraulic cylinder 17.
In addition, because the two ends of two telescopic hydraulic cylinders 17 are connected on the carriage 20,21 up and down of expansion link 18, so, can increase the flexible stroke of expansion link 18.Thus, under the situation of using identical expansion link 18, can carry out the excavation that deep-seated is more put.
In addition, in the present embodiment, be rectangle because make the cross sectional shape of urceolus 18a and inner core 18b, so can inner core be reversed with respect to urceolus as being the circular situation.Thus, can to the excessive power of hydraulic hose effect of adding on expansion link 18, then can not prevent the damage of hydraulic hose based on reversing of expansion link 18.In addition, shown in Fig. 7 (B), make the corner portion that is positioned at inner core 18b for the connector 31 on the periphery that is located at cylinder barrel with the piston rod chamber 17d binding of telescopic hydraulic cylinder 17, thus, can compare with small-sized formation for circular situation with making urceolus 18a, inner core 18b.In addition, because the direction that is oriented intersection of the carriage 20 about making, 21 linking part 20b, 21b, so can make grab bucket 16 and expansion link 18 swings by the external force that acts in the grab bucket 16, can prevent that excessive power is passed on grab bucket 16 and the expansion link 18, and prevent their damage.
In addition, in the present embodiment, inner face in the bottom of urceolus 18a is provided with the retainer 98 that prevents that inner core 18b from deviating from, be provided with when the losing of telescopic hydraulic cylinder 17 in the outside of the upper end of inner core 18b and retainer 98 butts and prevent the fastening parts (sliding panel 90 etc.) that inner core is deviate from, therefore, lose even suppose telescopic hydraulic cylinder 17, inner core 18b can not break away from from urceolus 18a yet, can prevent from grabbing bucket 16 whereabouts is improved safety thus.
In addition, in the present embodiment, be provided with on the top of urceolus 18a for the hydraulic hose that extends from flexible dipper 10 sides with the contiguous block 25 that mode that can dismounting connects, in this contiguous block 25, be provided with branching into to the oil circuit of telescopic hydraulic cylinder 17 and sequence valve 58A, the 58B, 58C1, the 58C2 that set to the job order of the branch branch road of the oil circuit of grab bucket 16 and telescopic hydraulic cylinder 17.If this structure, then under expansion link 18 reinstalls to situation on the existing flexible dipper 10, the hydraulic hose of adding in advance on flexible dipper 10 directly can be connected on the above-mentioned contiguous block 25, then existing hydraulic hose can be directly used, existing flexible dipper 10 can be easily be applicable to.
In addition, have the deep-cutting on the excavator of flexible dipper 10 if the expansion link of present embodiment is useful in, then can when excavating, telescopic hydraulic cylinder 17 elongations be excavated, therefore can carry out the excavation that deep-seated is more put, on the other hand, can be when casting telescopic hydraulic cylinder 17 is shortened and carry out casting, therefore, can not make grab bucket 16 and sand 63 on objective table 63 and the objective table 63 that casting takes place to carry out with hindering.That is to say, compare with the carriage that hangs down that hangs in the past, can relax the restriction of the grab bucket height in the casting, can carry out the excavation that deep-seated is more put.
In addition, because be used for making telescopic hydraulic cylinder 17 work fluid pressure line 53,54 and control valve 50 be used for grab bucket 16 usefulness, so, also can directly use hydraulic hose and the control valve 50 added in the existing flexible dipper 10 that deep-cuts excavator, therefore can be by deep-cutting the change that excavator carries out slightly and implement existing, and can provide with low price.
In addition, in the hydraulic circuit of Figure 12, first pipeline 53 of opening lateral line as the grab bucket of control valve 50, and fuel tank 73 between be provided with grab bucket overflow valve 71 and stop valve 70, if make switch 51b for opening stop valve 70 is operated to the connection side when casting in advance, then first pipeline 53 of control valve 50 can not become more than the operating pressure of grab bucket overflow valve 71.Thus, the elongation of the telescopic hydraulic cylinder 17 because grab bucket after 16 open is under an embargo, so eliminated the worry that makes grab bucket 16 and objective table 63 (with reference to Fig. 2) collision based on the elongation of telescopic hydraulic cylinder 17, the burden of operator in the time of can alleviating casting, and raising operability, and, improve safety.In addition, also this stop valve 70 and grab bucket overflow valve 71 can be located between the secondary side port B and fuel tank 73 of opposite side of control valve 50, perhaps, also the loop can be constituted, by making switch 51b make stop valve 70 become lap position for opening, and make grab bucket overflow valve 71 inoperative.
Grab bucket as being suitable for expansion link 18 of the present invention not only can be structure shown in Figure 4, also can use the hydraulic cylinder that will open and close usefulness to be installed in from the sagging piston rod 36b that fixes of expansion link 18 and the structure between the shell 41.In addition, the present invention not only can be useful in the grab bucket of excavating usefulness, and the grab bucket that also can be useful in loading usefulness waits in other the open and close type grab bucket.
In addition, as shown in figure 13, even expansion link of the present invention is installed in floppily replacing flexible dipper 10 under the situation on the dipper 10X of general hydraulic crawler excavator, also can be used in to deep-cut and excavate and loading etc.In addition, the present invention is not limited to above-mentioned embodiment,
In the scope that does not break away from main idea of the present invention, can carry out various changes, interpolation.
Claims (6)
1. expansion link, it constitutes, and is installed in floppily on the dipper of self-propelled working machine, and the open and close type grab bucket is installed in the lower end, and urceolus and inner core is chimeric in the mode that can stretch, and telescopic hydraulic cylinder is housed in inside, it is characterized in that,
On the upper end of being located at described urceolus and the bracket that links by pin and described dipper and be located at the lower end of described inner core and the bottom bracket that described open and close type grab bucket linked by pin on, be respectively equipped with the peristome that runs through along the flexible direction of described expansion link,
In being located at the described peristome of described bracket, be interspersed with an end of described telescopic hydraulic cylinder, and link by pin and described bracket,
In being located at the described peristome of described bottom bracket, be interspersed with the other end of described telescopic hydraulic cylinder, and link by pin and described bottom bracket.
2. expansion link according to claim 1 is characterized in that, the shape of cross section of described urceolus and described inner core is rectangular,
Make the pin-and-hole that is attached at the described bracket on the described dipper towards, with the pin-and-hole that is attached at the described bottom bracket in the described open and close type grab bucket towards quadrature.
3. expansion link according to claim 1 is characterized in that, on the inner face of the bottom of described urceolus, is provided with the retainer that prevents that described inner core from deviating from,
On the outside of the upper end of described inner core, be provided with described retainer butt and prevent the fastening parts that described inner core is deviate from.
4. expansion link according to claim 2 is characterized in that, on the inner face of the bottom of described urceolus, is provided with the retainer that prevents that described inner core from deviating from,
On the outside of the upper end of described inner core, be provided with described retainer butt and prevent the fastening parts that described inner core is deviate from.
5. according to each described expansion link in the claim 1 to 4, it is characterized in that, be provided with the contiguous block that connects in mode that can dismounting for the hydraulic hose that extends from described dipper side on the top of described urceolus,
In described contiguous block, be provided with the branch branch road, branch road branched into to the oil circuit of described telescopic hydraulic cylinder and the oil circuit of grabbing bucket to described open and close type in described minute, and, be provided with sequence valve in described contiguous block, the on-off action that described sequence valve makes the grab bucket of described open and close type carries out in the mode prior to the expanding-contracting action of described telescopic hydraulic cylinder.
6. one kind is deep-cut excavator, it is characterized in that, at the front end as the flexible dipper of described dipper each described expansion link in the claim 1 to 5 is installed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012031724A JP5703511B2 (en) | 2012-02-16 | 2012-02-16 | Telescopic rod and deep excavator |
| JP2012-031724 | 2012-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103255787A true CN103255787A (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100579560A Pending CN103255787A (en) | 2012-02-16 | 2013-02-05 | Expansion rod and deep drilling machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5703511B2 (en) |
| KR (1) | KR101991404B1 (en) |
| CN (1) | CN103255787A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895134B (en) * | 2015-05-18 | 2017-11-14 | 长沙新气象自动化技术有限公司 | A kind of Novel drilling grabs bar device |
| KR101986648B1 (en) * | 2018-04-06 | 2019-06-07 | (유)로뎀건설 | Excavating device for steel pipe access hole |
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| JPH0330436Y2 (en) * | 1984-05-25 | 1991-06-27 | ||
| EP0567218A1 (en) * | 1992-04-23 | 1993-10-27 | Japanic Corporation | Telescopic arm assembly with two interconnected hydraulic activators for grab bucket excavator |
| JPH0721651Y2 (en) * | 1989-04-18 | 1995-05-17 | 淳次 小川 | Attachment control device |
| JPH11125207A (en) * | 1997-10-24 | 1999-05-11 | Marujun Juko Kk | Hydraulic circuit formation of plural actuators and excavating attachment having said circuit |
| CN1336471A (en) * | 2000-07-31 | 2002-02-20 | 株式会社小松制作所 | Pipeline fitting device for sliding arm |
| CN102644304A (en) * | 2011-02-21 | 2012-08-22 | 日立建机株式会社 | Deeply excavating excavator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS62170618A (en) * | 1986-09-12 | 1987-07-27 | Ryutaro Yoritomi | Rocking expandible arm in oil-pressure shovel |
| JPH0330436U (en) | 1989-07-31 | 1991-03-26 | ||
| JPH0573043U (en) * | 1992-03-12 | 1993-10-05 | 小松ゼノア株式会社 | Power shovel piping equipment |
| JPH08177079A (en) * | 1994-12-21 | 1996-07-09 | Japanic:Kk | Hydraulic pressure transmission mechanism of deep excavating machine |
| JP3553186B2 (en) * | 1995-03-09 | 2004-08-11 | 株式会社小松製作所 | Hydraulic circuit of telescopic cylinder |
| JPH09144055A (en) * | 1995-11-20 | 1997-06-03 | Rentaruno Nikken:Kk | Deep-digging excavator |
| KR970043634A (en) * | 1995-12-26 | 1997-07-26 | 김정국 | 4-stage telescopic arm and clamshell clutch hydraulic system for excavators |
| KR0133564Y1 (en) * | 1996-02-28 | 1999-02-18 | 김정국 | Cramshell revolution hydraulic system of both telescopic arm and cramshell operating system |
-
2012
- 2012-02-16 JP JP2012031724A patent/JP5703511B2/en active Active
-
2013
- 2013-02-05 CN CN2013100579560A patent/CN103255787A/en active Pending
- 2013-02-15 KR KR1020130016364A patent/KR101991404B1/en active IP Right Grant
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0330436Y2 (en) * | 1984-05-25 | 1991-06-27 | ||
| JPH0721651Y2 (en) * | 1989-04-18 | 1995-05-17 | 淳次 小川 | Attachment control device |
| EP0567218A1 (en) * | 1992-04-23 | 1993-10-27 | Japanic Corporation | Telescopic arm assembly with two interconnected hydraulic activators for grab bucket excavator |
| JPH11125207A (en) * | 1997-10-24 | 1999-05-11 | Marujun Juko Kk | Hydraulic circuit formation of plural actuators and excavating attachment having said circuit |
| CN1336471A (en) * | 2000-07-31 | 2002-02-20 | 株式会社小松制作所 | Pipeline fitting device for sliding arm |
| CN102644304A (en) * | 2011-02-21 | 2012-08-22 | 日立建机株式会社 | Deeply excavating excavator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5703511B2 (en) | 2015-04-22 |
| KR20130094756A (en) | 2013-08-26 |
| KR101991404B1 (en) | 2019-06-20 |
| JP2013167107A (en) | 2013-08-29 |
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Application publication date: 20130821 |