WO2022205919A1 - 一种传动机构及柱塞泵 - Google Patents

一种传动机构及柱塞泵 Download PDF

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Publication number
WO2022205919A1
WO2022205919A1 PCT/CN2021/129269 CN2021129269W WO2022205919A1 WO 2022205919 A1 WO2022205919 A1 WO 2022205919A1 CN 2021129269 W CN2021129269 W CN 2021129269W WO 2022205919 A1 WO2022205919 A1 WO 2022205919A1
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WO
WIPO (PCT)
Prior art keywords
push rod
transmission mechanism
rod
oil
mechanism according
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PCT/CN2021/129269
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English (en)
French (fr)
Inventor
陈松林
吴衍
Original Assignee
惠州海卓科赛医疗有限公司
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Application filed by 惠州海卓科赛医疗有限公司 filed Critical 惠州海卓科赛医疗有限公司
Publication of WO2022205919A1 publication Critical patent/WO2022205919A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/18—Lubricating

Definitions

  • the present application relates to the technical field of pump bodies, and in particular, to a transmission mechanism and a plunger pump.
  • the cam structure or the eccentric shaft connecting rod structure is usually used to convert the circular motion of the pulley into a linear motion, especially when driving the plunger pump, on the one hand, the push rod is subjected to a large cyclic alternating. On the other hand, it performs reciprocating high-speed linear motion driven by the eccentric shaft connecting rod structure. Under this condition, the push rod is prone to bending or twisting, which affects the movement stability of the transmission mechanism and thus affects the output accuracy.
  • the purpose of the present application is to provide a transmission mechanism and a plunger pump that help to avoid the problem of bending or twisting of the push rod during high-speed movement, and improve the motion stability and output precision.
  • a transmission mechanism comprising:
  • the shell has mounting holes at its front and rear ends respectively;
  • a push rod, the front and rear ends of the push rod are respectively slidably installed in the mounting holes at the front and rear ends of the casing, a push cavity and a guide groove are opened in the push rod, and the guide groove is along the the axial extension of the push rod;
  • a drive mechanism which includes an eccentric drive shaft, the eccentric drive shaft penetrates the push cavity and abuts against the front side of the push cavity;
  • a guide rod one end of which is mounted on the casing, and the other end of which is penetrated with the guide groove, and the guide rod can limit the reciprocating movement of the push rod along its axial direction.
  • a positioning bearing is sleeved on the guide rod corresponding to the position of the guide groove, and the outer peripheral wall of the positioning bearing is in abutment with the inner side wall of the guide groove.
  • a support assembly is sleeved in the mounting hole, and the push rod is slidably connected to the support assembly.
  • At least one oil guiding circuit is provided on the inner side wall of the casing, one end of the oil guiding circuit extends to the support assembly, and the other end extends into the casing.
  • the support assembly includes a sliding bearing and an end cover sleeved in the mounting hole, one end of the end cover abuts against the front end of the sliding bearing, and the push rod passes through the sliding bearing and the end cover. the end cap.
  • the oil guide circuit includes an oil inlet section and an oil return section, an outlet end of the oil inlet section extends to the sliding bearing, and an inlet end of the oil return section extends to the inner side of the end cover.
  • an oil storage tank is opened on the inner side wall of the housing, one end of the oil storage tank extends to the support assembly, and the other end is connected to the outlet of the oil inlet section.
  • an oil seal is sleeved in the mounting hole at the front end of the housing.
  • an elastic member is provided on the push rod, the front end of the elastic member is abutted against the housing, and the rear end of the elastic member is abutted against the push rod.
  • the rear end of the push rod is provided with an annular flange
  • the elastic piece is sleeved on the outside of the push rod, the front end of the elastic piece is abutted against the casing, and the rear end is in contact with the annular flange. the front side of the .
  • the push rod includes a rod body and an adjustment bolt, a rear end of the rod body is provided with an installation hole, the adjustment bolt is threadedly connected with the installation hole, and the front end of the elastic member is in contact with the housing, The rear end is abutted against the adjusting bolt.
  • the present application also provides a plunger pump, including the above transmission mechanism.
  • the guide rod reciprocates relative to the push rod along the extending direction of the guide groove, so that the push rod is limited by the guide rod along its axial direction under the action of the eccentric drive shaft.
  • the end reciprocates, so that when the push rod reciprocates at high speed, the force direction is along its axial direction, and the bending and twisting shape of the push rod is restricted by the guide rod, so as to avoid bending or twisting of the push rod during high-speed movement. Therefore, the stability of the movement of the transmission mechanism is improved, and the overall output accuracy of the plunger pump is improved.
  • Fig. 1 is the structural representation of the preferred embodiment of the present application.
  • Fig. 2 is the enlarged schematic diagram of place A in the embodiment shown in Fig. 1;
  • FIG. 3 is an enlarged schematic view of position B in the embodiment shown in FIG. 1 .
  • orientations such as top, bottom, upward, downward, etc. mentioned in this document are defined relative to the directions in the various drawings, they are relative concepts, and therefore can be defined according to their In different positions and different practical states. Therefore, these or other orientations should not be construed as limiting.
  • first, second, etc. are used herein to describe various pieces of information, but the pieces of information should not be limited to these terms, which are only used to distinguish the same type of information from each other.
  • first information may also be referred to as “second” information
  • second information may also be referred to as “first” information without departing from the scope of the present application.
  • an embodiment of the present application provides a plunger pump, which includes a transmission mechanism, and the transmission mechanism includes a housing 1 , a push rod 2 , a driving mechanism and a guide rod 4 .
  • the front and rear ends of the casing 1 are respectively provided with installation holes; the front and rear ends of the push rod 2 are respectively slidably installed in the installation holes at the front and rear ends of the casing 1, and the push rod 2 is provided with a push cavity 21 and the guide groove 22, the guide groove 22 extends along the axial direction of the push rod 2; the driving mechanism includes an eccentric drive shaft 3, and the eccentric drive shaft 3 passes through the push cavity 21 and abuts against the front side of the push cavity 21; one end of the guide rod 4 is installed
  • the casing 1 and the other end are provided with a guide groove 22 , and the guide rod 4 can limit the reciprocating movement of the push rod 2 along its axial direction.
  • the guide rod 4 is sleeved with a positioning bearing 5 at the position corresponding to the guide groove 22 , so that the guide rod 4 and the push rod 2 are relatively moved during the relative movement.
  • the outer side wall of the guide rod 4 contacts the inner side wall of the guide groove 22 to generate sliding friction, but by setting the positioning bearing 5, the outer peripheral wall of the positioning bearing 5 is in contact with the inner side wall of the guide groove 22.
  • the inner wall of the guide groove 22 and the positioning bearing 5 produce rolling friction, thereby reducing the loss of the push rod 2 and the guide rod 4, and improving its service life and output accuracy after long-term use.
  • the positioning bearing 5 and the guide rod 4 can be fixedly sleeved or rotatably sleeved on the outside of the guide rod 4, so that the guide rod 4 and the inner ring of the positioning bearing 5 are relatively fixed or relatively rotated.
  • the guide rod 4 can be a set screw, the set screw is fixed in the housing 1 , and the inner ring of the positioning bearing 5 is relatively fixed with the set screw, so as to limit and guide the push rod 2 .
  • the front side wall of the push cavity 21 is an arc-shaped side wall, so as to improve the fit between the push rod 2 and the eccentric drive shaft 3 , thereby improving the stability of its transmission.
  • a support assembly 6 is sleeved in the installation hole in this embodiment, and the push rod 2 is slidably connected with the support assembly 6 .
  • the support assembly 6 in this embodiment includes a sliding sleeve sleeved in the installation hole.
  • the bearing 61 and the end cover 62, one end of the end cover 62 abuts against the front end of the sliding bearing 61, and the push rod 2 passes through the sliding bearing 61 and the end cover 62.
  • the end cover 62 is arranged to cooperate with the sliding bearing 61 and lock the sliding bearing. 61, to ensure the position of the sliding bearing 61 in the working process.
  • At least one oil guiding circuit 7 is provided on the inner side wall of the casing 1 in this embodiment, and one end of the oil guiding circuit 7 extends to the support assembly 6 and the other end extends into the casing 1 .
  • the oil guiding circuit 7 can intercept part of the lubricating oil and guide the part of the intercepted lubricating oil to the supporting assembly 6 to realize the lubrication of the supporting assembly 6 and reduce the The frictional force between the support assembly 6 and the push rod 2 relative to sliding, thereby reducing the wear of the support assembly 6 and the push rod 2;
  • the oil guide circuit 7 in an embodiment of the present application includes an oil inlet section 71 and an oil return section 72 , the outlet end of the oil inlet section 71 extends to the sliding bearing 61 , and the inlet end of the oil return section 72 It extends to the inner side of the end cover 62, so that when the lubricating oil is thrown to the inner wall of the casing 1 with the rotation of the driving mechanism, the lubricating oil flows from the oil inlet section 71 to the sliding bearing 61, and flows back to the casing 1 through the oil return section 72, It forms self-circulating lubrication, and at the same time takes away the heat generated by the relative moving friction between the push rod 2 and the sliding bearing 61, which has a certain cooling effect and improves the working stability of the mechanism;
  • the oil inlet section 71 in this embodiment is arranged above the oil return section 72 , so that the lubricating oil entering the oil guide circuit 7 flows through the support assembly 6 under the action of its own weight to achieve lubrication and cooling of the support assembly 6 .
  • an oil storage tank 73 is opened on the inner side wall of the housing 1, one end of the oil storage tank 73 extends to the support assembly 6, and the other end is communicated with the outlet of the oil inlet section 71. Accordingly, when the lubricating oil is not After quantitatively thrown to the oil inlet section 71, the lubricating oil can be left in the oil storage tank 73 through the oil inlet section 71, and accumulated in the oil storage tank 73, so that the sliding bearing 61 can be lubricated continuously and stably, and the stability of its lubrication can be improved. reliability.
  • the mounting hole at the front end of the casing 1 is sleeved with an oil seal 8, which improves the utilization rate of lubricating oil and reduces the loss of lubricating oil.
  • an elastic member 9 is provided on the push rod 2 , the front end of the elastic member 9 is in contact with the housing 1 , and the rear end is in contact with the push rod 2 .
  • the eccentric drive shaft 3 is elastically offset, that is, the pre-tightening force of the elastic member 9 is used, so that the front side of the eccentric drive shaft 3 is always in close contact with the push rod 2 during the rotation process, so as to ensure the reliability of the transmission and improve the transmission.
  • the effective service life of the mechanism, and the elastic member 9 can absorb the vibration energy in the transmission process of the transmission mechanism, thereby reducing noise.
  • the push rod 2 includes a rod body 23 and an adjusting bolt 24.
  • the rear end of the rod body 23 is provided with a mounting hole, and the adjusting bolt 24 is threaded in the mounting hole.
  • the adjusting bolt 24 when in use, the pre-tightening force of the elastic member 9 can be adjusted by rotating the adjusting bolt 24 .
  • the rear end of the push rod 2 is provided with an annular flange
  • the elastic member 9 is sleeved on the outside of the push rod 2, the front end of the elastic member 9 abuts against the housing 1, and the rear end abuts against the front side of the annular flange .
  • the guide rod 4 reciprocates relative to the push rod 2 along the extending direction of the guide groove 22, so that the push rod 2 is limited by the guide rod 4 in the direction of extension of the guide groove 22.
  • the eccentric drive shaft 3 Under the action of the eccentric drive shaft 3, it reciprocates along its axial ends, so that when the push rod 2 reciprocates at a high speed, the force direction is along its axial direction, and the bending and twisting of the push rod 2 is carried out through the guide rod 4.
  • Limit avoid the problem of bending or twisting of the push rod 2 during high-speed movement, thereby improving the stability of the movement of the transmission mechanism, thereby improving the overall output accuracy of the plunger pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)
  • Reciprocating Pumps (AREA)

Abstract

一种柱塞泵，包括传动机构，传动机构包括壳体（1）、推杆（2）、驱动机构、导向杆（4），壳体（1）的前、后两端分别具有安装孔；推杆（2）的前、后两端分别滑动安装于壳体（1）前、后两端的安装孔内，推杆（2）内开设有推动腔（21）和导向槽（22），导向槽（22）沿推杆（2）的轴向延伸；驱动机构包括偏心驱动轴（3），偏心驱动轴（3）穿设推动腔（21）并与推动腔（21）的前侧相抵；导向杆（4）的一端安装于壳体（1）、另一端穿设导向槽（22）。导向杆（4）相对推杆（2）沿着导向槽（22）的延伸方向往复移动，从而通过导向杆（4）限定推杆（2）在偏心驱动轴（3）的作用下沿其轴向两端往复移动，使推杆（2）在高速往复运动时，受力方向沿其轴向方向，避免推杆（2）在高速移动过程中发生弯曲或扭曲的问题，从而提高传动机构运动的稳定性，进而提高柱塞泵整体输出精度。

Description

一种传动机构及柱塞泵 技术领域
本申请涉及泵体技术领域，尤其涉及一种传动机构及柱塞泵。
背景技术
现有的泵送结构中，通常采用凸轮结构或偏心轴连杆结构将带轮的圆周运动转为直线运动，尤其是在驱动柱塞泵时，一方面，推杆承受较大的循环交变载荷，另一方面，其在偏心轴连杆结构带动下做往复高速直线运动，推杆在该情况下容易发生弯曲或扭曲现象，影响传动机构的运动稳定性，进而影响输出精度。
申请内容
本申请的目的是提供有助于避免推杆在高速移动过程中发生弯曲或扭曲的问题，提高运动稳定性和输出精度的一种传动机构及柱塞泵。
为了实现上述目的，本申请提供一种传动机构，包括：
壳体，其前、后两端分别具有安装孔；
推杆，所述推杆的前、后两端分别滑动安装于所述壳体前、后两端的所述安装孔内，所述推杆内开设有推动腔和导向槽，所述导向槽沿所述推杆的轴向延伸；
驱动机构，其包括偏心驱动轴，所述偏心驱动轴穿设所述推动腔并与推动腔的前侧相抵；以及
导向杆，其一端安装于所述壳体、另一端穿设所述导向槽，所述导向杆能够限定所述推杆沿其轴向往复运动。
可选的，所述导向杆对应所述导向槽的位置套设有定位轴承，所述定位轴承的外周壁与所述导向槽的内侧壁抵接。
可选的，所述安装孔内套有支承组件，所述推杆与所述支承组件滑动连接。
可选的，所述壳体的内侧壁开设有至少一条导油回路，所述导油回路一端延伸至所述支承组件、另一端延伸至壳体内。
可选的，所述支承组件包括套设于所述安装孔内的滑动轴承和端盖，所述端盖一端抵顶于所述滑动轴承的前端，所述推杆穿设所述滑动轴承和所述端盖。
可选的，所述导油回路包括进油段和回油段，所述进油段的出口端延伸至所述滑动轴承，所述回油段的入口端延伸至所述端盖内侧。
可选的，所述壳体的内侧壁开设有储油槽，所述储油槽一端延伸至所述支承组件、另一端与所述进油段的出口连接。
可选的，所述壳体前端的安装孔内套有油封。
可选的，所述推杆上设有弹性件，所述弹性件的前端与所述壳体相抵、后端与所述推杆相抵。
可选的，所述推杆后端设有环形凸缘，所述弹性件套设于所述推杆外侧，所述弹性件的前端与所述壳体相抵、后端与所述环形凸缘的前侧相抵。
可选的，所述推杆包括杆体和调节螺栓，所述杆体的后端开设有安装孔，所述调节螺栓与所述安装孔螺纹连接，所述弹性件的前端与所述壳体相抵、后端与所述调节螺栓相抵。
基于上述申请目的，本申请还提供了一种柱塞泵，包括上述的传动机构。
实施本申请的实施例，具有以下技术效果：
本申请的推杆在偏心驱动轴的驱动下往复运动时，导向杆相对推杆沿着导向槽的延伸方向往复移动，从而通过导向杆限定推杆在偏心驱动轴的作用下沿其轴向两端往复移动，使推杆在高速往复运动时，受力方向沿其轴向方向，并通过导向杆对推杆的弯曲、扭曲形态进行限制，避免推杆在高速移动过程中发生弯曲或扭曲的问题，从而提高传动机构运动的稳定性，进而提高柱塞泵整体输出精度。
附图说明
图1是本申请优选实施例的结构示意图；
图2是图1所示实施例中A处的放大示意图；
图3是图1所示实施例中B处的放大示意图。
附图标记说明：
1、壳体，2、推杆，21、推动腔，22、导向槽，23、杆体，24、调节螺栓，3、偏心驱动轴，4、导向杆，5、定位轴承，6、支承组件，61、滑动轴承，62、端盖，7、导油回路，71、进油段，72、回油段，73、储油槽，8、油封，9、弹性件。
具体实施方式
下面结合附图和实施例，对本申请的具体实施方式作进一步详细描述。以下实施例用于说明本申请，但不用来限制本申请的范围。
首先，需要说明的是，在本文中所提到的顶部、底部、朝上、朝下等方位是相对于各个附图中的方向来定义的，它们是相对的概念，并且因此能够根据其所处于的不同位置和不同的实用状态而改变。所以，不应将这些或其他方位用于理解为限制性用语。
应注意，术语“包括”并不排除其他要素或步骤，并且“一”或“一个”并不排除复数。
此外，还应当指出的是，对于本文的实施例中描述或隐含的任意单个技术特征，或在附图中示出或隐含的任意单个技术特征，仍能够在这些技术特征(或其等同物)之间继续进行组合，从而获得未在本文中直接提及的本申请的其他实施例。
另外还应当理解的是，本文中采用术语“第一”、“第二”等来描述各种信息，但这些信息不应限于这些术语，这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本申请范围的情况下，“第一”信息也可以被称为“第二”信息，类似的，“第二”信息也可以被称为“第一”信息。
应当注意的是，在不同的附图中，相同的参考标号表示相同或大致相同的组件。
参考图1-图3，本申请的一个实施例中提供了一种柱塞泵，包括有传动机构，该传动机构包括壳体1、推杆2、驱动机构和导向杆4。
其中，壳体1的前、后两端分别具有安装孔；推杆2的前、后两端分别滑动安装于壳体1前、后两端的安装孔内，推杆2内开设有推动腔21和导向槽22，导向槽22沿推杆2的轴向延伸；驱动机构包括偏心驱动轴3，偏心驱 动轴3穿设推动腔21并与推动腔21的前侧相抵；导向杆4的一端安装于壳体1、另一端穿设导向槽22，导向杆4能够限定推杆2沿其轴向往复运动。
如此，当推杆2在偏心驱动轴3的驱动下往复运动时，导向杆4相对推杆2沿着导向槽22的延伸方向往复移动，从而通过导向杆4限定推杆2在偏心驱动轴3的作用下沿其轴向两端往复移动，使推杆2在高速往复运动时，受力方向沿其轴向方向，并通过导向杆4对推杆2的弯曲、扭曲形态进行限制，避免推杆2在高速移动过程中发生弯曲或扭曲的问题，从而提高传动机构运动的稳定性，进而提高柱塞泵整体输出精度。
进一步的，参考图1和图2，本申请提供的一个实施例中的导向杆4对应导向槽22的位置套设有定位轴承5，使导向杆4与推杆2相对移动的过程中，避免导向杆4的外侧壁与导向槽22的内侧壁接触产生滑动摩擦，而是通过设置定位轴承5，使定位轴承5的外周壁与导向槽22的内侧壁抵接，当导向杆4与推杆2相对移动时，导向槽22的内侧壁与定位轴承5产生滚动摩擦，从而降低推杆2和导向杆4的损耗，提高其使用寿命及长时间使用后的输出精度。
另外，需要说明的是，定位轴承5与导向杆4可以固定套设或转动套设于导向杆4外侧，从而使导向杆4与定位轴承5的内圈相对固定或相对转动。
更具体的，导向杆4可为紧定螺钉，紧定螺钉固定于壳体1内，定位轴承5的内圈与紧定螺钉相对固定，从而对推杆2起到限位及导向作用。
参考图1，其中，推动腔21的前侧壁呈弧形侧壁，从而提高推杆2与偏心驱动轴3的贴合程度，进而提高其传动的稳定性。
参考图1和图3，本实施例中的安装孔内套有支承组件6，推杆2与支承组件6滑动连接，具体的，本实施例的支承组件6包括套设于安装孔内的滑动轴承61和端盖62，端盖62一端抵顶于滑动轴承61的前端，推杆2穿设滑动轴承61和端盖62，通过滑动轴承61降低推杆2沿其轴向移动时外侧壁受到的摩擦力，从而降低其损耗，同时，避免壳体1产生磨损，降低维修的成本，另外，为了保证滑动轴承61轴向的稳定性，设置端盖62与滑动轴承61配合并锁紧滑动轴承61，保证滑动轴承61在工作过程的位置。
进一步的，本实施例壳体1的内侧壁开设有至少一条导油回路7，导油回路7一端延伸至支承组件6、另一端延伸至壳体1内，如此，当驱动机构在壳体1内转动时，润滑油随着驱动机构转动甩向壳体1内壁四周，导油回路7可因此截获部分润滑油，并将部分截获的润滑油导向支承组件6，实现支承组件6的润滑，降低支承组件6与推杆2相对滑动的摩擦力，从而降低支承组件6和推杆2的磨损；
具体的，参考图3，本申请的一个实施例中的导油回路7包括进油段71和回油段72，进油段71的出口端延伸至滑动轴承61，回油段72的入口端延伸至端盖62内侧，如此，润滑油随着驱动机构转动甩向壳体1内壁时，润滑油从进油段71流向滑动轴承61，并通过回油段72流回到壳体1内，形成自循环润滑，同时将推杆2与滑动轴承61相对移动摩擦产生的热量带走，起到一定的降温效果，提高机构工作稳定性；
其中，本实施例中的进油段71设置于回油段72的上方，从而使进入导油回路7的润滑油在自重作用下流经支承组件6，实现支承组件6的润滑及降温。
进一步的，参考图1和图3，壳体1的内侧壁开设有储油槽73，储油槽73一端延伸至支承组件6、另一端与进油段71的出口连通，据此，在润滑油不定量甩至进油段71后，润滑油可在通过进油段71留至储油槽73，并在储油槽73内聚集，从而能持续稳定的滑动轴承61进行润滑，提高其润滑的稳定性和可靠性。
为了避免润滑油从支承组件6处流出到壳体1外，本实施例中的壳体1前端的安装孔内套有油封8，提高润滑油的利用率，降低润滑油的损耗。
进一步的，参考图1，推杆2上设有弹性件9，弹性件9的前端与壳体1相抵、后端与推杆2相抵，如此，推杆2在弹性件9的弹力作用下与偏心驱动轴3弹性相抵，即利用弹性件9的预紧力作用，使得偏心驱动轴3在转动过程中，其前侧始终与推杆2保持紧密接触，从而保证传动的可靠性，并提高传动机构的有效使用寿命，且弹性件9能够吸收传动机构传动过程中的振动能量，从而减少噪声。
本实施例中，若在偏心驱动轴3的周期转动过程中，推杆2与偏心驱动轴3不能持续稳定相抵，只需将弹性件9的预紧力设定值调至大于推杆2所需的回复力即可。
进一步的，推杆2包括杆体23和调节螺栓24，杆体23的后端开设有安装孔，安装孔内螺纹连接有调节螺栓24，弹性件9前端抵接在壳体1上，后端抵接于调节螺栓24，使用时，可通过旋转调节螺栓24调节弹性件9的预紧力。
在另一实施例中，推杆2后端设有环形凸缘，弹性件9套设于推杆2外侧，弹性件9的前端与壳体1相抵、后端与环形凸缘的前侧相抵。
综上，本实施例的推杆2在偏心驱动轴3的驱动下往复运动时，导向杆4相对推杆2沿着导向槽22的延伸方向往复移动，从而通过导向杆4限定推杆2在偏心驱动轴3的作用下沿其轴向两端往复移动，使推杆2在高速往复运动时，受力方向沿其轴向方向，并通过导向杆4对推杆2的弯曲、扭曲形态进行限制，避免推杆2在高速移动过程中发生弯曲或扭曲的问题，从而提高传动机构运动的稳定性，进而提高柱塞泵整体输出精度。
本说明书参考附图来公开本申请，并且还使本领域中的技术人员能够实施本申请，包括制造和使用任何装置或系统、采用合适的材料以及使用任何结合的方法。本申请的范围由请求保护的技术方案限定，并且包括本领域中的技术人员想到的其他实例。只要此类其他实例包括并非不同于请求保护的技术方案字面语言的结构元件，或此类其他实例包含与请求保护的技术方案的字面语言没有实质性区别的等价结构元件，则此类其他实例应当被认为处于本申请请求保护的技术方案所确定的保护范围内。

Claims (12)

  1. 一种传动机构，其特征在于，包括：
    壳体，其前、后两端分别具有安装孔；
    推杆，所述推杆的前、后两端分别滑动安装于所述壳体前、后两端的所述安装孔内，所述推杆内开设有推动腔和导向槽，所述导向槽沿所述推杆的轴向延伸；
    驱动机构，其包括偏心驱动轴，所述偏心驱动轴穿设所述推动腔并与推动腔的前侧相抵；以及
    导向杆，其一端安装于所述壳体、另一端穿设所述导向槽，所述导向杆能够限定所述推杆沿其轴向往复运动。
  2. 根据权利要求1所述的传动机构，其特征在于，所述导向杆对应所述导向槽的位置套设有定位轴承，所述定位轴承的外周壁与所述导向槽的内侧壁抵接。
  3. 根据权利要求1所述的传动机构，其特征在于，所述安装孔内套有支承组件，所述推杆与所述支承组件滑动连接。
  4. 根据权利要求3所述的传动机构，其特征在于，所述壳体的内侧壁开设有至少一条导油回路，所述导油回路一端延伸至所述支承组件、另一端延伸至壳体内。
  5. 根据权利要求4所述的传动机构，其特征在于，所述支承组件包括套设于所述安装孔内的滑动轴承和端盖，所述端盖一端抵顶于所述滑动轴承的前端，所述推杆穿设所述滑动轴承和所述端盖。
  6. 根据权利要求5所述的传动机构，其特征在于，所述导油回路包括进油段和回油段，所述进油段的出口端延伸至所述滑动轴承，所述回油段的入口端延伸至所述端盖内侧。
  7. 根据权利要求6所述的传动机构，其特征在于，所述壳体的内侧壁开设有储油槽，所述储油槽一端延伸至所述支承组件、另一端与所述进油段的出口连接。
  8. 根据权利要求4所述的传动机构，其特征在于，所述壳体前端的安装孔内套有油封。
  9. 根据权利要求1所述的传动机构，其特征在于，所述推杆上设有弹性件，所述弹性件的前端与所述壳体相抵、后端与所述推杆相抵。
  10. 根据权利要求9所述的传动机构，其特征在于，所述推杆后端设有环形凸缘，所述弹性件套设于所述推杆外侧，所述弹性件的前端与所述壳体相抵、后端与所述环形凸缘的前侧相抵。
  11. 根据权利要求9所述的传动机构，其特征在于，所述推杆包括杆体和调节螺栓，所述杆体的后端开设有安装孔，所述调节螺栓与所述安装孔螺纹连接，所述弹性件的前端与所述壳体相抵、后端与所述调节螺栓相抵。
  12. 一种柱塞泵，其特征在于，包括权利要求1-11任一项所述的传动机构。
PCT/CN2021/129269 2021-03-30 2021-11-08 一种传动机构及柱塞泵 WO2022205919A1 (zh)

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JP2012026427A (ja) * 2010-07-27 2012-02-09 Kota Noda 対峙対向型リニアモーションプランジャーポンプ１対が、同期往復行程の上・下変換点で発生する振動を、ｏｆｆｓｅｔした２分割の偏芯円弦カムとヨークを１対とフライホイルを組合せ回転し振動防止と、ピストンロッド往復運動に同期する吸排気スプールバルブの構造。
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JP2012026427A (ja) * 2010-07-27 2012-02-09 Kota Noda 対峙対向型リニアモーションプランジャーポンプ１対が、同期往復行程の上・下変換点で発生する振動を、ｏｆｆｓｅｔした２分割の偏芯円弦カムとヨークを１対とフライホイルを組合せ回転し振動防止と、ピストンロッド往復運動に同期する吸排気スプールバルブの構造。
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