WO2020057318A1 - 钢筋切断机的液压结构 - Google Patents

钢筋切断机的液压结构 Download PDF

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Publication number
WO2020057318A1
WO2020057318A1 PCT/CN2019/101981 CN2019101981W WO2020057318A1 WO 2020057318 A1 WO2020057318 A1 WO 2020057318A1 CN 2019101981 W CN2019101981 W CN 2019101981W WO 2020057318 A1 WO2020057318 A1 WO 2020057318A1
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plunger
sleeve
hole
cutting machine
steel bar
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PCT/CN2019/101981
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English (en)
French (fr)
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王灵超
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台州市新大陆电子科技有限公司
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Publication of WO2020057318A1 publication Critical patent/WO2020057318A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F11/00—Cutting wire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices

Definitions

  • the utility model relates to a steel bar cutting machine, in particular to a hydraulic structure of a steel bar cutting machine.
  • Rebar cutting machine is a tool used for cutting reinforcing steel bars, and it is one of the indispensable equipment for processing steel bars. It is mainly used for fixed-length cutting of steel bars in housing construction, bridges, tunnels, power stations, large-scale water conservancy projects. Compared with other cutting equipment, steel bar cutting machines have the characteristics of light weight, low energy consumption, reliable work, and high efficiency. Therefore, in recent years, they have been widely used by machinery processing and small steel rolling mills, and have played an important role in various fields of national economic construction. Role.
  • the existing steel bar cutting machine generally consists of a cutting part, a hydraulic part and a power part.
  • the hydraulic part includes a pump body, an eccentric shaft and a plunger assembly installed in a plunger hole of the pump body.
  • the plunger pump assembly consists of a plunger and a column. It consists of a plug spring, a check valve, a check valve spring and a plug.
  • the plunger is driven by the eccentric shaft to reciprocate in the plunger hole to complete the oil suction and oil discharge action.
  • the plunger constantly rubs against the plunger hole. After a long time work, the plunger and the plunger hole will wear. In order not to affect the performance of the steel bar cutting machine, the plunger must be replaced or even The entire pump body is expensive to maintain and use.
  • the technical problem to be solved by the present utility model is to overcome the above problems and provide a hydraulic structure of a steel bar cutting machine to reduce the maintenance and use cost of the steel bar cutting machine.
  • a hydraulic structure of a steel bar cutting machine includes a pump body provided with an oil inlet chamber and an oil outlet chamber, an eccentric shaft rotatably supported in the pump body, and a plunger assembly driven by the eccentric shaft.
  • a plunger hole provided in the radial direction is used to install the plunger assembly.
  • the plunger assembly includes a plunger, a plunger spring, a check valve, a check valve spring,
  • the plug is provided with an oil inlet and an oil outlet respectively connected to the oil inlet cavity and the oil outlet cavity on the wall of the plunger hole.
  • the plunger assembly further includes a plunger sleeved outside the plunger.
  • the plunger sleeve is set in the plunger hole, the plunger fits into the plunger sleeve, and is driven by the eccentric shaft to reciprocate in the plunger sleeve.
  • the plunger sleeve is provided with a communication passage and an oil column. Oil inlet hole inside the sleeve.
  • a plunger sleeve is provided between the plunger and the plunger hole, which can avoid friction between the plunger and the plunger hole, prevent wear of the plunger hole, and avoid replacing the entire pump body.
  • the plug includes a cover portion and a peripheral edge portion extending upward from the cover portion, and a top end of the peripheral edge portion abuts a lower end surface of the plunger sleeve, and the peripheral edge portion is opened on the peripheral edge portion.
  • a bearing is sleeved on an eccentric portion of the eccentric shaft, and a top end of the plunger always abuts against an outer peripheral surface of the bearing under the action of a plunger spring.
  • a first elastic seal is provided between an outer peripheral surface of the plunger sleeve and a plunger hole wall.
  • a second elastic seal is provided between the outer peripheral surface of the plug and the wall of the plunger hole.
  • the beneficial effect of the utility model is that after the plunger sleeve is provided between the plunger and the plunger hole, the plunger only rubs against the plunger sleeve during reciprocating movement, and only the plunger and plunger wear after long-term work Without the need to replace the entire pump body, reducing the maintenance and use costs of the steel bar cutting machine.
  • FIG. 1 is a schematic diagram when an embodiment of the present invention is in an oil absorption state.
  • FIG. 2 is a schematic diagram when the embodiment of the utility model is in a state of oil pressure.
  • FIG. 3 is a structural diagram of a plunger sleeve in the embodiment of the present invention.
  • FIG. 4 is a structural diagram of a plug in an embodiment of the present invention.
  • Fig. 5 is a sectional view taken along A-A in Fig. 1.
  • a hydraulic structure of a steel bar cutting machine includes a pump body 1, an eccentric shaft 2, and a plunger assembly.
  • the pump body 1 is provided with an oil inlet chamber a and an oil outlet chamber b, and an eccentric shaft. 2 is rotatably supported in the pump body 1.
  • the pump body 1 is provided with a plurality of radially arranged plunger holes 3 for installing a plunger assembly. In this embodiment, the number of the plunger holes 3 is three, and the plunger holes
  • the 3 walls are provided with an oil inlet 31 and an oil outlet 32 respectively connected to the oil inlet cavity a and the oil outlet cavity b.
  • the plunger assembly includes a plunger 41, a plunger spring 42, a check valve 43, a check valve spring 44, and a plug 45 which are arranged in the plunger hole 3 from top to bottom in this order.
  • the top end of the plunger spring 42 extends into the column.
  • the inner cavity of the plug 41 is in contact with the plunger 41, the bottom end is in contact with the check valve 43, the check valve spring 44 is in contact between the check valve 43 and the plug 45, and the outer peripheral surface of the plug 45 is in contact with the plunger hole
  • a second elastic seal 51 is provided between the three walls, and the plunger 41 is driven by the eccentric shaft 2 to reciprocate in the plunger hole 3.
  • a bearing 22 is sleeved on the eccentric portion 21 of the eccentric shaft 2. During the reciprocating movement of the plunger 41, the top end of the plunger 41 always abuts against the outer peripheral surface of the bearing 22 due to the action of the plunger spring 42.
  • a plunger sleeve 46 is also provided outside the plunger 41.
  • the plunger sleeve 46 is provided in the plunger hole 3, and the plunger 41 is fitted into the plunger sleeve 46 with a clearance.
  • the eccentric shaft 2 drives the reciprocating movement in the plunger sleeve 46, so the plunger 41 only rubs against the plunger sleeve 46, and only the plunger 41 and the plunger sleeve 46 wear out after long-term work, without replacing the entire pump Body 1.
  • the position of the plunger sleeve 46 overlaps the position of the orifice of the oil inlet 31, and is staggered with the position of the orifice of the oil outlet 32.
  • the plunger sleeve 46 is provided with a connection between the oil inlet 31 and the plunger. Oil inlet 461 inside sleeve 46.
  • a first elastic seal 52 is provided between the outer peripheral surface of the plunger sleeve 46 and the wall of the plunger hole 3, and in this embodiment, the first elastic seal 52 is provided at the inlet 31 and the outlet 32 Location.
  • the plug 45 includes a cover portion 451 and a surrounding edge portion 452 formed by extending upward from the cover portion 451.
  • An oil outlet 453 is formed to communicate with the inner cavity of the surrounding edge portion 452 and the oil outlet 32.
  • the check valve 43 is located in the inner cavity of the surrounding portion 452 and below the plunger sleeve 46.
  • the diameter of the upper end face of the check valve 43 is larger than the diameter of the inner hole of the plunger sleeve 46.
  • the upper end surface of the check valve 43 abuts the lower end surface of the plunger sleeve 46 and blocks the bottom orifice of the plunger sleeve 46.
  • the bottom end of the check valve spring 44 is in contact with the cover portion 451 of the plug 45, and the top end is in contact with the check valve 43.
  • the power part of the cutting machine drives the eccentric shaft 2 to rotate, and the bearing 22 of the eccentric portion 21 of the eccentric shaft 2 drives the plunger 41 in contact with it to reciprocate in the plunger sleeve 46.
  • a negative pressure is formed in the plunger sleeve 46, and the oil inlet hole 461 is opened so that the inside of the plunger sleeve 46 and the oil inlet 31 and the oil inlet a Connect the oil into the plunger sleeve 46 from the oil inlet cavity a through the oil inlet 31.
  • the first elastic seal 52 and the second elastic seal 51 are used to solve the sealing problem of the plunger assembly in the process of sucking and pressing oil, and a suitable sealing material can be selected.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Shearing Machines (AREA)

Abstract

一种钢筋切断机的液压结构，包括泵体（1）、偏心轴（2）和柱塞组件，泵体内设有柱塞孔（3），柱塞组件包括在所述柱塞孔内自上向下依次设置的柱塞（41）、柱塞弹簧（42）、止回阀（43）、止回阀弹簧（44）、堵头（45），柱塞孔壁上开设有进油道（31）和出油道（32）；柱塞组件还包括套设于所述柱塞外的柱塞套（46），所述柱塞套设于柱塞孔内，柱塞间隙配合于柱塞套内，由偏心轴带动在柱塞套内往复运动；所述柱塞套上开设有连通进油道与柱塞套内部的进油孔（461）。该结构在柱塞与柱塞孔之间设置柱塞套，使柱塞在往复运动时只与柱塞套发生摩擦，长时间工作后磨损的也只有柱塞和柱塞套，而无需更换整个泵体，降低了钢筋切断机的维修和使用成本。

Description

钢筋切断机的液压结构 技术领域
本实用新型涉及一种钢筋切断机，尤其涉及一种钢筋切断机的液压结构。
背景技术
钢筋切断机是剪切钢筋所使用的一种工具，是钢筋加工必不可少的设备之一，它主要用于房屋建筑、桥梁、隧道、电站、大型水利等工程中对钢筋的定长切断。钢筋切断机与其他切断设备相比，具有重量轻、耗能少、工作可靠、效率高等特点，因此近年来逐步被机械加工和小型轧钢厂等广泛采用，在国民经济建设的各个领域发挥了重要的作用。
现有的钢筋切断机一般由切断部分、液压部分和动力部分组成，其中液压部分包括泵体、偏心轴和安装于泵体柱塞孔内的柱塞组件，柱塞泵组件由柱塞、柱塞弹簧、止回阀、止回阀弹簧和堵头组成，柱塞由偏心轴带动在柱塞孔内往复运动以完成吸油、排油动作。这种结构的钢筋切断机在工作时，柱塞不断与柱塞孔发生摩擦，长时间工作后柱塞和柱塞孔均会产生磨损，为了不影响钢筋切断机的性能就必须更换柱塞甚至整个泵体，维修和使用成本高。
实用新型内容
本实用新型所要解决的技术问题在于克服上述问题，而提供一种钢筋切断机的液压结构，降低钢筋切断机的维修和使用成本。
本实用新型的技术方案是：
一种钢筋切断机的液压结构，包括设有进油腔和出油腔的泵体、转动支承于所述泵体中的偏心轴以及由偏心轴带动动作的柱塞组件，泵体内设有若干径向设置的柱塞孔用于安装所述柱塞组件，柱塞组件包括在所述柱塞孔内自上向下依次设置的柱塞、柱塞弹簧、止回阀、止回阀弹簧、堵头，柱塞孔壁上开设有分别连通到进油腔、出油腔的进油道、出油道，其特征在于：所述柱塞组件还包括套设于所述柱塞外的柱塞套，所述柱塞套设于柱塞孔内，柱塞间隙配合于柱塞套内，由偏心轴带动在柱塞套内往复运动；所述柱塞套上开设有连通进油道与柱塞套内部的进油孔。在柱塞与柱塞孔之间设置柱塞套，能够避免柱塞与柱塞孔之间发生摩擦，防止柱塞孔产生磨损，从而避免更换整个泵体。
在上述钢筋切断机的液压结构中，所述堵头包括盖部和自盖部向上延伸形成的围边部，所述围边部的顶端抵于柱塞套的下端面，围边部上开设有连通围边部内腔与出油道的出油孔。
在上述钢筋切断机的液压结构中，所述偏心轴的偏心部上套装有轴承，在柱塞弹簧的作用下，柱塞的顶端始终紧抵所述轴承的外周面。
在上述钢筋切断机的液压结构中，所述柱塞套的外周面与柱塞孔壁之间设有第一弹性密封件。
在上述钢筋切断机的液压结构中，所述堵头的外周面与柱塞孔壁之间设有第二弹性密封件。
本实用新型的有益效果是：在柱塞与柱塞孔之间设置柱塞套后，柱塞在往复运动时只与柱塞套发生摩擦，长时间工作后磨损的也只有柱塞和柱塞套，而无需更换整个泵体，降低了钢筋切断机的维修和使用成本。
附图说明
图1为本实用新型实施例处于吸油状态时的示意图。
图2为本实用新型实施例处于压油状态时的示意图。
图3为本实用新型实施例中柱塞套的结构图。
图4为本实用新型实施例中堵头的结构图。
图5为图1的A-A剖视图。
具体实施方式
现结合附图和实施例对本实用新型作进一步的说明：
在本实用新型的描述中，需要理解的是，“上”、“下”等术语所指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型，而不是指示或暗示所指的装置或原件必须具有特定的方位，因此不能理解为对本实用新型的限制。
如图1所示，本实施例提供的一种钢筋切断机的液压结构，包括泵体1、偏心轴2和柱塞组件，泵体1设有进油腔a和出油腔b，偏心轴2可转动地支承于泵体1中，泵体1内设有若干径向设置的柱塞孔3用于安装柱塞组件，本实施例中柱塞孔3的数量为3个，柱塞孔3壁上开设有分别连通到进油腔a、出油腔b的进油道31、出油道32。
柱塞组件包括在柱塞孔3内自上向下依次设置的柱塞41、柱塞弹簧42、止回阀43、止回阀弹簧44、堵头45，柱塞弹簧42的顶端伸入柱塞41内腔与柱塞41抵接，底端与止回阀43抵接，止回阀弹簧44抵接在止回阀43与堵头45之间，堵头45的外周面与柱塞孔3壁之间设有第二弹性密封件51，柱塞41由偏心轴2带动在柱塞孔3内往复运动。偏心轴2的偏心部21上套装有轴承22，在柱塞41往复运动的过程中，由于柱塞弹簧42的作用，柱塞41的顶端始终紧抵轴承22的外周面。
为了防止柱塞41与柱塞孔3之间发生摩擦，柱塞41外还设有柱塞套46，柱塞套46设于柱塞孔3内，柱塞41间隙配合于柱塞套46内，由偏心轴2带动在柱塞套46内往复运动，因此柱塞41只与柱塞套46发生摩擦，长时间工作后磨损的也只有柱塞41和柱塞套46，而无需更换整个泵体1。柱塞套46与进油道31孔口所处位置相叠，与出油道32孔口所处位置错开，如图3所示，柱塞套46上开设有连通进油道31与柱塞套46内部的进油孔461。柱塞套46的外周面与柱塞孔3壁之间设有第一弹性密封件52，本实施例中，第一弹性密封52件设于进油道31孔口与出油道32孔口之间的位置。
另外，如图4所示，堵头45包括盖部451和自盖部451向上延伸形成的围边部452，围边部452的顶端抵于柱塞套46的下端面，围边部452上开设有连通围边部452内腔与出油道32的出油孔453。止回阀43位于围边部452的内腔中且位于柱塞套46的下方，止回阀43的上端面直径大于柱塞套46的内孔直径，在止回阀弹簧44的作用下，止回阀43的上端面抵于柱塞套46的下端面，堵住柱塞套46的底部孔口。止回阀弹簧44的底端抵接于堵头45盖部451，顶端抵接于止回阀43。
钢筋切断机工作时，切断机的动力部分带动偏心轴2转动，偏心轴2偏心部21的轴承22带动与之接触的柱塞41在柱塞套46内往复运动。如图1、图2和图5所示，柱塞41向上运动时，柱塞套46内形成负压，并且进油孔461打开使得柱塞套46内部与进油道31、进油腔a相通，使油从进油腔a经进油道31吸入柱塞套46内；柱塞41向下运动时，封住进油孔461，同时向下压油形成压力油，直到柱塞弹簧42的压力推动止回阀43向下运动打开柱塞套46底部孔口，压力油进入柱塞孔3的下部空间，再通过出油孔453、出油道32进入出油腔b。出油腔b中设有与切断机的切断部分相连的活塞6，随着柱塞41不断的往复运动，压力油推动活塞6前进带动切断部分工作。设置多组柱塞组件同时压油，能够有效提高钢筋切断机的切断效率。第一弹性密封件52和第二弹性密封件51是用来解决柱塞组件在吸、压油过程中的密封问题的，可选用合适的密封材料。
可以理解的是，对于本领域的普通技术人员来说，可以根据本实用新型的技术构思做出其它各种相应的改变与变形，而所有这些改变与变形都应属于本实用新型权利要求的保护范围。

Claims (5)

  1. 一种钢筋切断机的液压结构，包括设有进油腔和出油腔的泵体、转动支承于所述泵体中的偏心轴以及由偏心轴带动动作的柱塞组件，泵体内设有若干径向设置的柱塞孔用于安装所述柱塞组件，柱塞组件包括在所述柱塞孔内自上向下依次设置的柱塞、柱塞弹簧、止回阀、止回阀弹簧、堵头，柱塞孔壁上开设有分别连通到进油腔、出油腔的进油道、出油道，其特征在于：所述柱塞组件还包括套设于所述柱塞外的柱塞套，所述柱塞套设于柱塞孔内，柱塞间隙配合于柱塞套内，由偏心轴带动在柱塞套内往复运动；所述柱塞套上开设有连通进油道与柱塞套内部的进油孔。
  2. 根据权利要求1所述的钢筋切断机的液压结构，其特征在于：所述堵头包括盖部和自盖部向上延伸形成的围边部，所述围边部的顶端抵于柱塞套的下端面，围边部上开设有连通围边部内腔与出油道的出油孔。
  3. 根据权利要求1所述的钢筋切断机的液压结构，其特征在于：所述偏心轴的偏心部上套装有轴承，在柱塞弹簧的作用下，柱塞的顶端始终紧抵所述轴承的外周面。
  4. 根据权利要求1所述的钢筋切断机的液压结构，其特征在于：所述柱塞套的外周面与柱塞孔壁之间设有第一弹性密封件。
  5. 根据权利要求1所述的钢筋切断机的液压结构，其特征在于：所述堵头的外周面与柱塞孔壁之间设有第二弹性密封件。
PCT/CN2019/101981 2018-09-20 2019-08-22 钢筋切断机的液压结构 WO2020057318A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112958732A (zh) * 2021-03-31 2021-06-15 成渝钒钛科技有限公司 一种盘卷热轧光圆钢筋生产用切割装置及其使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208951017U (zh) * 2018-09-20 2019-06-07 台州市新大陆电子科技有限公司 钢筋切断机的液压结构

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63272437A (ja) * 1987-04-28 1988-11-09 Ogura:Kk ベンダカツタ−
CN2163247Y (zh) * 1993-07-24 1994-04-27 周强 悬轴式径向柱塞油泵
CN104096784A (zh) * 2014-07-01 2014-10-15 吴家集 钢筋调直切断机
CN204276751U (zh) * 2014-11-24 2015-04-22 温州杰拓机电有限公司 高效钢筋切断机
CN207119725U (zh) * 2017-08-21 2018-03-20 浙江欧凯机电有限公司 钢筋切断机的液压机构
CN207188695U (zh) * 2017-08-21 2018-04-06 浙江欧凯机电有限公司 钢筋切断机
CN208951017U (zh) * 2018-09-20 2019-06-07 台州市新大陆电子科技有限公司 钢筋切断机的液压结构

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63272437A (ja) * 1987-04-28 1988-11-09 Ogura:Kk ベンダカツタ−
CN2163247Y (zh) * 1993-07-24 1994-04-27 周强 悬轴式径向柱塞油泵
CN104096784A (zh) * 2014-07-01 2014-10-15 吴家集 钢筋调直切断机
CN204276751U (zh) * 2014-11-24 2015-04-22 温州杰拓机电有限公司 高效钢筋切断机
CN207119725U (zh) * 2017-08-21 2018-03-20 浙江欧凯机电有限公司 钢筋切断机的液压机构
CN207188695U (zh) * 2017-08-21 2018-04-06 浙江欧凯机电有限公司 钢筋切断机
CN208951017U (zh) * 2018-09-20 2019-06-07 台州市新大陆电子科技有限公司 钢筋切断机的液压结构

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112958732A (zh) * 2021-03-31 2021-06-15 成渝钒钛科技有限公司 一种盘卷热轧光圆钢筋生产用切割装置及其使用方法
CN112958732B (zh) * 2021-03-31 2022-12-23 成渝钒钛科技有限公司 一种盘卷热轧光圆钢筋生产用切割装置及其使用方法

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