JPH02203178A - Manufacture of snow block - Google Patents
Manufacture of snow blockInfo
- Publication number
- JPH02203178A JPH02203178A JP2271289A JP2271289A JPH02203178A JP H02203178 A JPH02203178 A JP H02203178A JP 2271289 A JP2271289 A JP 2271289A JP 2271289 A JP2271289 A JP 2271289A JP H02203178 A JPH02203178 A JP H02203178A
- Authority
- JP
- Japan
- Prior art keywords
- snow
- valve
- hydraulic
- high pressure
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
- Control Of Presses (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は雪ブロック製造装置に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a snow block manufacturing device.
第４図に従来の富ブロック製造装置の断面図を示す。こ
の装置は、筒状ケーシング１内に充填した雪２を、油圧
ピストン３によシ圧縮し、これが所定の寸法に達した後
、油圧ピストン３の除荷を比較的急激に行ない、ゲート
４を開いて、油圧ピストン３により筒状ケーシング１内
に出来ている雪ブロックを押し出して、雪ブロックを得
る装置である。従来の装置によって製造された雪ブロッ
クには層状の割れが発生し、ブロックとして利用できな
いものとなることがしばしばあつ九。FIG. 4 shows a sectional view of a conventional rich block manufacturing apparatus. This device compresses snow 2 filled in a cylindrical casing 1 with a hydraulic piston 3, and after this reaches a predetermined size, the hydraulic piston 3 is unloaded relatively rapidly, and a gate 4 is opened. This device opens and pushes out the snow block formed inside the cylindrical casing 1 using a hydraulic piston 3 to obtain a snow block. Snow blocks produced using conventional equipment often suffer from cracks in the layers, making them unusable as blocks.
従来の装置においては、纂５図に示すように雪質によっ
ては、押し出された雪ブロック５において、圧縮時の油
圧ピストン３の荷重作用方向６に対して垂直な平面にク
ラック７が多数発生することがあった。In the conventional device, as shown in Fig. 5, depending on the quality of the snow, many cracks 7 occur in the extruded snow block 5 in a plane perpendicular to the direction 6 of load action of the hydraulic piston 3 during compression. Something happened.
この現象は次に述べる原因によるものである。This phenomenon is due to the following reasons.
すなわち、油圧ピストン３によって、シリンダ１内で富
ブロックが圧縮されている状態においては、第６図に示
すように、ボアンン効果によって筒状ケーシングｌの壁
から雪ブロック５に対して側圧力９が作用している。こ
の時、油圧ピストン３の押付は荷重を急激Ｃｒ除去Ｊ゛
ると、逆に側圧力９＆ｔ：よって、πり°ロック５内に
圧縮荷重の作用方向ｙ Ｘｊ１行な引張応力１０が発生
！７、その結果、引張応力１．Ｌｒ垂直な面８に力・い
てクラックが生じる。ｔ、 ７ｃがって、締固めの荷重
を緩やかに除去ずれ６・ｊ、γイブト−カツク内の応力
場−瓢圧縮応力場も１−＜は、軽度の引張ミ応力場であ
るに止まり雪ブロックの削メ１．が防止できる。That is, when the snow block is compressed in the cylinder 1 by the hydraulic piston 3, as shown in FIG. It's working. At this time, when the hydraulic piston 3 is pressed, the load is suddenly removed J゛, and on the contrary side pressure 9 & t: Therefore, a tensile stress 10 is generated in the direction of action of the compressive load y Xj in the lock 5! 7. As a result, the tensile stress 1. A crack occurs due to force on the surface 8 perpendicular to Lr. t, 7c Therefore, the compaction load is gently removed. The stress field in the displacement 6.j, γ is also a compressive stress field of 1-<, which is only a mild tensile stress field. Block cutting 1. can be prevented.
本発明は」以上の観点から、クラックの無い雪ブロック
を得ることのできる叩ブロック製１造装置全提供１．よ
うとするものであｚｌ
〔課題を解決するための手段〕
本発明は前記課題を解決ｔ、フ１１ものであつ［、筒状
り′−シング内の實に油圧ピストンにより圧縮荷重を付
加１２て雪ブロックを製造゛する装置圧おいて、前記油
圧ピストンを押す油圧シリンダ内の高圧油を戻り油配管
へ導く管路切替手段と、同戻り油配管上ｉｃ設けらｔし
た絞り弁とを備えデこことを特徴と１”る営ブロック製
造装雪に関するものである。From the above points of view, the present invention provides an entire machine for producing pounded blocks that can obtain crack-free snow blocks.1. [Means for Solving the Problems] The present invention solves the above-mentioned problems. The apparatus is equipped with a pipe switching means for guiding high pressure oil in a hydraulic cylinder that pushes the hydraulic piston to a return oil pipe at a device pressure for manufacturing snow blocks, and a throttle valve provided with an IC on the return oil pipe. This article is about block manufacturing and snow preparation, which is characterized by the following features:
本発明の四／「λツク製造装置においては、筒状り−シ
ング内の雪の加圧が終了した時管路切替手段ＬＣよって
、油圧シリンダ内の高圧油を戻り油配管の方−・導き、
同管上の絞り弁を経て排出−５−毬ろｌ”、とによって
、油圧シリンダ内圧力の減圧が緩やかに行われる。Ｌ
７’！：がって雪ブロックに対ブ゛る油圧ピストンの圧
縮荷重も徐々に低下するので、筒状ケーシングから＝（
ブｌ′：×ツクを押１１シた時に、雪ブ目ツクにクジツ
クが発生ずることが防がれる。Fourth aspect of the present invention: In the λ-tsuku manufacturing apparatus, when the pressurization of the snow in the cylindrical leasing is completed, the high-pressure oil in the hydraulic cylinder is returned to the oil pipe by the pipe switching means LC. ,
The internal pressure of the hydraulic cylinder is gradually reduced by the discharge via the throttle valve on the same pipe.
7'! : Therefore, the compressive load of the hydraulic piston against the snow block gradually decreases, so that from the cylindrical casing = (
BL': When you press the 11 button, it will prevent the occurrence of burrs in snow patches.
第１図に本発明の第１実施例の油圧回路図を、第２図＋
Ｃ各機器の作動タイミングと油圧シリンダの圧力との関
係図を示す。第１図［おい丁、符−号１−・・・−４′
？Ｆ伺］また部分は従来技術と同じであるから説明を省
略”する。油圧シリンダ２０−１＆」、スプール型の方
向切換弁２１を通じて油圧源２６から高圧油が供給され
ており方向切換弁２１０ソレノイド２１０を励磁すると
油圧ピストン３は前進し雪２が圧縮される。圧縮が終了
）７た後ソレノイド２１０の励磁を断つと、方向切換弁
２１は中立状態（第１図のシンボルの中央位置）となり
、油圧シリンダ２０のヘッド側２０１は高圧状態で密封
される。次に電磁弁２２を励磁すると、ヘッド側２０１
１Ｃ密封されていた高圧油は、戻り油配管２５を経て、
同管上の絞り弁２３を介してタンク回路２４を経て油タ
ンク２７へゆっくりと排出される。油圧シリンダのヘッ
ド側２０１の圧力が所定値以下に低下した時に油圧シリ
ンダ２０のゲー ト４を開き、宣ブロックを押出す。第
２図はＪ以上の各部の操作と油圧シリンダのヘッド＠２
０１の圧力との時間的対応関係を示１−たものである。Fig. 1 shows a hydraulic circuit diagram of the first embodiment of the present invention, Fig. 2 +
C shows a relationship diagram between the operation timing of each device and the pressure of the hydraulic cylinder. Figure 1 [Oi Ding, code 1-...-4'
? Also, since the parts are the same as those in the prior art, their explanation will be omitted. Hydraulic cylinder 20-1&'' is supplied with high pressure oil from a hydraulic source 26 through a spool-type directional control valve 21, and a directional control valve 210 solenoid. When 210 is excited, the hydraulic piston 3 moves forward and the snow 2 is compressed. When the excitation of the solenoid 210 is cut off after the compression is completed (7), the directional control valve 21 becomes in a neutral state (center position of the symbol in FIG. 1), and the head side 201 of the hydraulic cylinder 20 is sealed in a high pressure state. Next, when the solenoid valve 22 is energized, the head side 201
The high pressure oil sealed in 1C passes through the return oil pipe 25,
The oil is slowly discharged to the oil tank 27 through the tank circuit 24 via the throttle valve 23 on the same pipe. When the pressure on the head side 201 of the hydraulic cylinder falls below a predetermined value, the gate 4 of the hydraulic cylinder 20 is opened and the block is pushed out. Figure 2 shows the operation of each part above J and the hydraulic cylinder head @2.
1- shows the temporal correspondence with the pressure of 01.
第３図は本発明の第２実施例の油圧回路図で、方向切換
弁２１に電磁弁２２及び絞り弁２３の機能を付加１−た
もので、第１実施例と同様な効果を有するものである。FIG. 3 is a hydraulic circuit diagram of a second embodiment of the present invention, which has the functions of a solenoid valve 22 and a throttle valve 23 added to the directional control valve 21, and has the same effect as the first embodiment. It is.
なお、第１図、第３図に示プ゛方向切換弁２１けスプー
ル型の弁に限定されるものではなく、ポペット型（いわ
ゆるロジック弁）でも良い。Note that the directional control valve 21 shown in FIGS. 1 and 3 is not limited to the spool type valve, but may be a poppet type (so-called logic valve).
以上述べた装ｆｌｉ［よって雪の締固めを開始Ｊれば、
油圧シリンダの圧力（第２図中のＡ）の増大とともに、
このほぼ一定の割合で筒状り一シング１の側圧力が発生
する。所定の密度の雪ブロックを得るに必要な圧縮荷重
は雪質ｌ／ｒ：よって定まっており、油圧シリンダのヘ
ッド側圧力がそれに対応した値、すなわち第２図中の１
３の値に達した後、その圧力金、方向切換弁２１等の操
作によって、第２図中のＣのように軽減して行けば、筒
状ケーシング１の側圧力もこれに応じて低下する。この
側圧力がＭ質１ｃよって定まる一定値より低下し７た時
、ゲート４を開き、第２図中のＤ圧水ブ′ように、圧縮
荷重を、急激に解放］〜て、営ブ１ゴツクを押（−出せ
ば、クラックの無い雪ブロックを′得ることができる。If the snow compaction starts as described above,
As the pressure of the hydraulic cylinder (A in Figure 2) increases,
The side pressure of the cylindrical ring 1 is generated at this approximately constant rate. The compressive load required to obtain a snow block with a predetermined density is determined by snow quality l/r: Therefore, the head side pressure of the hydraulic cylinder is set to the corresponding value, that is, 1 in Fig. 2.
After reaching the value 3, if the pressure is reduced as shown in C in Fig. 2 by operating the pressure gauge, directional control valve 21, etc., the side pressure of the cylindrical casing 1 will also decrease accordingly. . When the pressure on this side drops below a certain value determined by the M quality 1c, the gate 4 is opened and the compressive load is suddenly released as shown in the D pressure water valve in Fig. 2. If you press Gotsuk (-), you can get a snow block without cracks.
本発明の雷ブロック製造装置は、油圧ピストンを押す油
圧シリンダ内の高圧油を戻り油配管へ導く管路切替手段
と、同房シ油配管上に設けられた絞り弁とを備えて、筒
状ケーシング内での雪の加圧が終了した時、油圧シリン
ダ内の高圧油を緩かに排出するようにしているので、ク
ラックの無い雪ブロックを製造することができる。The lightning block manufacturing device of the present invention is equipped with a pipe line switching means for guiding high pressure oil in a hydraulic cylinder that pushes a hydraulic piston to a return oil pipe, and a throttle valve provided on the oil pipe in the same chamber. When the snow is pressurized inside, the high-pressure oil inside the hydraulic cylinder is slowly discharged, making it possible to manufacture crack-free snow blocks.
第１図は本発明の第１実施例の油圧回路図、第２図は同
実施例の、各機器の作動タイミングと油圧の関係図、第
３図は本発明の第２実施例の油圧回路図、第４図は従来
技術の断面図、第５図および第６図は従来技術の作用説
明図である。
１・・・筒状ケーシング、２・・・雪、３・・・油圧ピ
ストン、４・・・ゲート、５・・・雷ブロック、６・・
・荷重作用方向、７・・・クラック、８・・・引張応力
に垂直な面、９・・・側圧力、１０・・・引張応力、２
０・・・油圧シリンダ、２１・・・方向切換弁、２２・
・・電磁弁２３・・・絞り弁、２４・・・タンク回路、
２５・・・戻り油配管、２６・・・油圧源、２７・・・
油タンク、２０１・・・油圧シリンダのヘッド側、２１
０・・・ソレノイド。
代理人 弁理士 坂 間 暁 外２名
も３に
時間−Fig. 1 is a hydraulic circuit diagram of a first embodiment of the present invention, Fig. 2 is a diagram of the relationship between the operation timing of each device and oil pressure of the same embodiment, and Fig. 3 is a hydraulic circuit diagram of a second embodiment of the present invention. 4 are cross-sectional views of the prior art, and FIGS. 5 and 6 are action explanatory views of the prior art. 1... Tubular casing, 2... Snow, 3... Hydraulic piston, 4... Gate, 5... Lightning block, 6...
・Load action direction, 7... Crack, 8... Surface perpendicular to tensile stress, 9... Side pressure, 10... Tensile stress, 2
0... Hydraulic cylinder, 21... Directional switching valve, 22...
...Solenoid valve 23...throttle valve, 24...tank circuit,
25...Return oil pipe, 26...Hydraulic pressure source, 27...
Oil tank, 201...Hydraulic cylinder head side, 21
0... Solenoid. Representative Patent Attorney Akatsuki Sakama and 2 other people also took 3 hours.
Claims (1)
付加して雪ブロックを製造する装置において、前記油圧
ピストンを押す油圧シリンダ内の高圧油を戻り油配管へ
導く管路切替手段と、同戻り油配管上に設けられた絞り
弁とを備えたことを特徴とする雪ブロック製造装置。A device for manufacturing snow blocks by applying a compressive load to snow in a cylindrical casing using a hydraulic piston, comprising: a pipe switching means for guiding high-pressure oil in a hydraulic cylinder that pushes the hydraulic piston to a return oil pipe; A snow block manufacturing device characterized by comprising a throttle valve provided on a pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1022712A JP2617556B2 (en) | 1989-02-02 | 1989-02-02 | Snow block manufacturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1022712A JP2617556B2 (en) | 1989-02-02 | 1989-02-02 | Snow block manufacturing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02203178A true JPH02203178A (en) | 1990-08-13 |
| JP2617556B2 JP2617556B2 (en) | 1997-06-04 |
Family
ID=12090443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1022712A Expired - Fee Related JP2617556B2 (en) | 1989-02-02 | 1989-02-02 | Snow block manufacturing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2617556B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020070934A (en) * | 2002-08-09 | 2002-09-11 | 윤재석 | A Scraper Driving Device Of Ice Marking Plant Using Pneumatic Or Hydraulic |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798201A (en) * | 2016-02-02 | 2016-07-27 | 付江 | Horizontal hydraulic reinforcing steel cutter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01155171A (en) * | 1987-12-10 | 1989-06-19 | Ishikawajima Harima Heavy Ind Co Ltd | Hydraulic circuit for snow ice conversion device |
-
1989
- 1989-02-02 JP JP1022712A patent/JP2617556B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01155171A (en) * | 1987-12-10 | 1989-06-19 | Ishikawajima Harima Heavy Ind Co Ltd | Hydraulic circuit for snow ice conversion device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020070934A (en) * | 2002-08-09 | 2002-09-11 | 윤재석 | A Scraper Driving Device Of Ice Marking Plant Using Pneumatic Or Hydraulic |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2617556B2 (en) | 1997-06-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |