JPS6318510U

JPS6318510U -

Info

Publication number: JPS6318510U
Application number: JP11126786U
Authority: JP
Priority date: 1986-07-19
Filing date: 1986-07-19
Publication date: 1988-02-06

Description

[Brief explanation of the drawing]

第１図は本考案の油圧ランマの概要を示す側面
図、第２図は本考案の油圧発振機の発振機構を示
す概要図である。１……操作弁部、２……油圧シリンダ部、３…
…発振弁部、４……油圧発振機、５……油圧ピス
トン、６……スプール、７……締固め板、８……
ガイドシリンダ、９……摺動ライナ、１０……保
護ラバー、１１……操作スプール、１２……ハン
ドル、１３……給油ポート、１４……排油ポート
、１５……出力ポート、１６……排出ポート、１
７……シリンダ、１８……固定スリーブ、１９…
…摺動スリーブ、２０……環状溝、２１……常時
加圧室、２２……交番加圧室、２３……ストロー
クリミツタ、２４……入力ポート、２５……連通
ポート、２６……交番ポート、２７……吐出ポー
ト、２８……パイロツトポート、２９……タンク
ポート、３０……パイロツト高圧ポート、３１…
…高圧環状溝、３２……低圧環状溝、３３……大
径ニードル、３４……小径ニードル、３５……交
番室、３６……交番室ポート、３７……常圧室、
３８……常圧室ポート、３９……高圧交番ポート
、４０……低圧ポート、４１……タンクポート、
４２……高圧ポート、４３……絞り弁、４４……
ストツパ、４５……排油室、４６……回路、４７
……ストローク調整ポート、４８……ストローク
調整弁、４９，５０……ブレーキ段、５１……皿
ばね、５２……ハンドル、５３……コントローラ
、５４……ストローク調整ハンドル、５５……油
圧ホース、５６，５６′……ワイヤ、５７′，５
７……ばね、５８……弁、５９……ボール弁、６
０……弁。 FIG. 1 is a side view schematically showing the hydraulic rammer of the present invention, and FIG. 2 is a schematic diagram showing the oscillation mechanism of the hydraulic oscillator of the present invention. 1... Operation valve section, 2... Hydraulic cylinder section, 3...
...Oscillating valve section, 4...Hydraulic oscillator, 5...Hydraulic piston, 6...Spool, 7...Compaction plate, 8...
Guide cylinder, 9...Sliding liner, 10...Protection rubber, 11...Operation spool, 12...Handle, 13...Oil supply port, 14...Drain port, 15...Output port, 16...Drain port, 1
7... Cylinder, 18... Fixed sleeve, 19...
... Sliding sleeve, 20 ... Annular groove, 21 ... Constant pressure chamber, 22 ... Alternate pressure chamber, 23 ... Stroke limiter, 24 ... Input port, 25 ... Communication port, 26 ... Alternate box Port, 27...Discharge port, 28...Pilot port, 29...Tank port, 30...Pilot high pressure port, 31...
...High pressure annular groove, 32...Low pressure annular groove, 33...Large diameter needle, 34...Small diameter needle, 35...Alternative box chamber, 36...Alternative chamber port, 37...Normal pressure chamber,
38... Normal pressure chamber port, 39... High pressure alternating port, 40... Low pressure port, 41... Tank port,
42... High pressure port, 43... Throttle valve, 44...
Stopper, 45...Oil drain chamber, 46...Circuit, 47
... Stroke adjustment port, 48 ... Stroke adjustment valve, 49, 50 ... Brake stage, 51 ... Belleville spring, 52 ... Handle, 53 ... Controller, 54 ... Stroke adjustment handle, 55 ... Hydraulic hose, 56, 56'...Wire, 57', 5
7...Spring, 58...Valve, 59...Ball valve, 6
0... Valve.

Claims

[Scope of claims for utility model registration] (1) An operating valve portion 1 that also serves as a balance weight,
The hydraulic oscillator 4 consisting of the hydraulic cylinder section 2 and the oscillating valve section 3 is balanced so that the center of gravity is on the axis of the hydraulic piston 5 of the hydraulic cylinder section 2, and the spool 6 of the oscillating valve section 3 and the hydraulic piston are balanced. A compaction plate 7 having an inclined surface symmetrical in the forward and backward direction of compaction with respect to the axis of the hydraulic piston 5 is provided at the tip end of the hydraulic piston 5 that vibrates due to the interaction of the hydraulic piston 5.
Furthermore, a sliding liner 9 that is slidably fitted into a guide cylinder 8 provided on the lower surface of the hydraulic cylinder section 2 is attached to the compaction plate 7, and a dustproof liner 9 is attached to the outer periphery of the guide cylinder 8. A hydraulic rammer characterized by being provided with a protective frame or protective rubber 10 that also serves to prevent rotation of the hydraulic rammer. (2) The operating valve section 1 has an operating spool 11 for supplying high-pressure oil from an external hydraulic source to the hydraulic cylinder section 2, a handle 12 for operating the operating spool 11, and an oil supply port 13 communicating with the external hydraulic source. , a drain port 14, and an output port 15 and a discharge port 16 that communicate with the hydraulic cylinder section 2. A sliding sleeve 19 consisting of a large-diameter portion and a large-diameter portion is arranged with their large-diameter opening ends facing each other, and the fixed sleeve 1
A hydraulic piston 5 having an annular groove 20 is inserted into the inside of the hydraulic piston 8 and the sliding sleeve 19.
A constant pressurizing chamber 21 and an alternating pressurizing chamber 22 are formed between the fixed sleeve 18 and the sliding sleeve 19, respectively, and the amount of sliding of the sliding sleeve 19 is regulated at the small diameter portion of the sliding sleeve 19. The input port 24 is equipped with a stroke limiter 23 and further communicates the output port 15 of the operating valve section 1 with the constant pressurizing chamber 21, and the communication port 24 supplies high pressure oil from the always pressurizing chamber 21 to the oscillating valve section 3. Port 25 and alternating pressure chamber 2
2, an alternating port 26 that receives alternating oil from the oscillating valve section 3, and a discharge port 27 that discharges alternating oil to the oscillating valve section 3.
, a pilot port 28 that constantly communicates with the annular groove 20 of the hydraulic piston 5 through the large diameter part of the fixed sleeve 18, and a pilot port 28 that communicates with the annular groove 20 of the hydraulic piston 5 alternately through the annular groove 20 due to the vibration of the hydraulic piston 5. A tank port 29 and a pilot high pressure port 30 are provided to communicate with each other, and the tank port 2
Reference numeral 9 communicates with the discharge port 16, the pilot high pressure port 30 communicates with the communication port 25, and the oscillation valve section 3 has a large diameter needle 33 at both ends of the spool 6, which has a high pressure annular groove 31 and a low pressure annular groove 32. The small diameter needle 34 is brought into contact with the large diameter needle 3.
3, an alternating chamber port 36 that communicates an alternating chamber 35 formed on the other end surface of the small diameter needle 34 with the pilot port 28 of the hydraulic cylinder section 2; and a normal pressure chamber 37 formed on the other end surface of the small diameter needle 34 and A normal pressure chamber port 38 that communicates with the communication port 25 is provided, and a high pressure alternating port 39 that constantly communicates the high pressure annular groove 31 and the alternating port 26 of the hydraulic cylinder section 2, and a high pressure alternating port 39 that constantly communicates the high pressure annular groove 31 with the alternating port 26 of the hydraulic cylinder section 2. a tank port 41 that communicates with the low pressure annular groove 32 when the spool 6 moves forward;
A high-pressure port 42 is provided which communicates with the high-pressure annular groove 31 when reciprocating, the tank port 41 communicates with the discharge port 16 of the operating valve section 1, and the high-pressure port 42 communicates with the communication port 25 of the hydraulic cylinder section 2. Furthermore, a stopper 44 disposed on the end face of the spool 6 controls a throttle valve 43 that controls the movement of the hydraulic piston 5 by controlling the movement of the spool 6.
The stroke limiter 23 of the hydraulic cylinder section 2 and the sliding sleeve are interposed in a circuit 46 that communicates the oil drain chamber 45 formed between the end surface of the spool 6 and the discharge port 16 of the operating valve section 1. Supply high-pressure oil from the communication port 25 to the stroke adjustment port 47 that communicates with the opposing surface of the port 19, or use the discharge port 16
A stroke adjustment valve 48 is provided to drain oil and adjust the stroke of the hydraulic piston 5, and is further provided between the small diameter part and the large diameter part of the hydraulic piston 5, and between the small diameter part and the large diameter part of the sliding sleeve 19. The hydraulic rammer according to claim 1, which is a registered utility model, characterized in that brake stages 49 and 50 are respectively provided to improve starting performance at the start of work.