WO2017148360A1 - 线性传动装置、拆卸方法以及具有防预紧卡死功能的线性传动装置 - Google Patents
线性传动装置、拆卸方法以及具有防预紧卡死功能的线性传动装置 Download PDFInfo
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- WO2017148360A1 WO2017148360A1 PCT/CN2017/075112 CN2017075112W WO2017148360A1 WO 2017148360 A1 WO2017148360 A1 WO 2017148360A1 CN 2017075112 W CN2017075112 W CN 2017075112W WO 2017148360 A1 WO2017148360 A1 WO 2017148360A1
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- screw
- motor
- linear actuator
- bearing
- coupling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
Definitions
- the present invention generally relates to linear actuators, and more particularly to linear actuators for motion simulation.
- a sports experience In the video, movie, game and other industries, in order to enhance the experience of the audience or game participants, in addition to images and sounds, it can also provide various experiences such as sports experience, scent experience, and humidity experience.
- a sports experience When a sports experience is provided, it is generally achieved by causing a chair, a racing car, or the like in which the audience sits to generate a motion synchronized with the image and the sound sequence.
- the motor portion is referred to as an active portion
- the portion that receives the motion transmitted by the active portion is referred to as a driven portion. It is desirable that the connection between the active part and the driven part, the support of the bearing involved can be easily disassembled, and parts are saved.
- a linear transmission apparatus which may include: a motor having an output shaft capable of bidirectional rotation; a lead screw; a motor coupling and a screw coupling for coupling an output shaft of the motor and a lead screw for transmitting bidirectional rotation of the output shaft of the motor to the screw; a bearing for supporting the screw; a housing having an inner cavity, the screw being received in a cavity of the outer casing,
- the outer casing includes a first portion and a second portion that are axially disassemblable, the first portion being coupled to the motor, the bearing being secured to the portion of the first portion that engages the second portion, and the coaxial screw nut and the sliding tube rigidly coupled to each other
- the linear transmission device may further include: a collision preventing pad (13) fixed to the end of the screw, having a diameter larger than the diameter of the screw, and matched with the screw nut for preventing the screw nut from the screw Fall off.
- a collision preventing pad (13) fixed to the end of the screw, having a diameter larger than the diameter of the screw, and matched with the screw nut for preventing the screw nut from the screw Fall off.
- a linear actuator according to an embodiment of the present invention, wherein the anti-collision pad material may be spring steel.
- the spacer may have a thickness of 2.5 to 3.2 mm, and the outer diameter is larger than the inner diameter of the screw nut and smaller than the inner diameter of the sliding tube.
- the spacer has a thickness of 2.9-3.1 mm, the inner diameter of the screw nut is 12 mm, the inner diameter of the sliding tube is 20 mm, and the outer diameter of the spacer is 17.5. ⁇ 19.5 mm.
- a linear transmission apparatus which may include: a motor having an output shaft capable of bidirectional rotation; a lead screw; a motor coupling and a screw coupling for coupling an output shaft of the motor and a lead screw for transmitting bidirectional rotation of the output shaft of the motor to the screw; a bearing for supporting the screw; a housing having an inner cavity, the screw being received in a cavity of the outer casing,
- the outer casing includes a first portion and a second portion that are axially disassemblable, the first portion being coupled to the motor, the bearing being secured to the portion of the first portion that engages the second portion, and the coaxial screw nut and sliding rigidly coupled to each other
- the pipe nut has a portion located inside the sliding pipe and a flange located outside the sliding pipe, the flange is fastened with the sliding pipe, and the screw nut can be engaged with the screw rod, thereby converting the rotary motion of the screw into the screw The translation of the nut, thereby driving the sliding
- the first portion may have a stepped hole, the circumferential surface of the stepped hole is combined with the circumferential surface of the bearing, the stepped surface of the stepped hole is combined with the first side of the outer ring of the bearing, and the second portion has a circle An annular protruding end, the end surface of the protruding end abuts against the second side of the outer ring of the bearing, and the outer circumferential surface of the protruding end closely matches the circumferential surface of the stepped hole of the first portion.
- the screw coupling may have a flange, the side of the side of the flange remote from the motor bears against the first side of the inner ring of the bearing, and the second side of the inner ring of the bearing passes the nut Come fixed.
- the outer casing portion may have a hole adapted to serve as a venting opening and a wrench point.
- the sliding tube may have a groove on the outer casing
- the guiding member can be received in the groove to prevent axial rotation of the sliding tube.
- the motor coupling and the screw coupling may each have a pair of protruding fingers, and the linear transmission may further include a cross-shaped coupling member, one of the motor couplings A pair of projecting fingers of the projecting fingers and the screw coupling are inserted into the cross-shaped coupling members to form a three-piece fastening connection to each other.
- the first portion may have a square shape and the second portion may have a circular shape.
- the one end of the sliding tube away from the motor may be equipped with a fuel cap for adding lubricating oil to the screw.
- the linear actuator divides the outer casing into a motor seat portion and a screw housing portion to facilitate assembly, and the motor seat portion and the screw housing portion may define bearings; and the nut portion is located outside the sliding tube, Flange, easy to assemble and save parts.
- a method for disassembling a linear actuator may include: removing a connecting member that connects the motor to the first portion of the outer casing; removing the motor; removing the first portion; and approaching the end of the motor from the outer casing Pulling the driven portion integrally from the inner cavity of the second portion, the driven portion including at least one bearing, a lead screw, a screw nut, and a sliding tube interconnected with each other.
- the method of disassembling the linear actuator according to the embodiment of the present invention can relatively easily remove the driven portion for maintenance and replacement.
- Figure 1 shows an exploded view of a linear actuator in accordance with an embodiment of the present invention.
- FIG. 2 shows a cross-sectional view of a linear actuator in accordance with an embodiment of the present invention.
- FIG 3 shows an exploded view of a linear actuator in accordance with another embodiment of the present invention.
- FIG. 4 shows an exploded view of a linear actuator in accordance with another embodiment of the present invention.
- FIG. 1 shows an exploded view of a linear actuator 100 in accordance with an embodiment of the present invention.
- 2 shows a cross-sectional view of a linear actuator 100 in accordance with an embodiment of the present invention.
- the linear actuator 100 is adapted to receive, for example, between the ground and the seat, receiving a motion signal code (eg, a signal indicating a certain distance of movement in a certain direction), and driving the motor of the linear actuator 100 under the control of the motion controller.
- the linear actuator 100 produces a translation along the axial direction.
- the motion signal code here is intended to move the linear actuator in synchronism with the image and/or sound, thereby moving the seat to give the audience on the seat a sporty experience.
- the linear transmission 100 includes a motor 1, a lead screw 9, a motor coupling 3 and a screw coupling 6, a bearing 7, a first portion 5 and a second portion 20 of the outer casing, a coaxial screw nut 11 and a sliding tube 12 .
- the motor 1 receives an electrical motion signal and converts it into a rotational output in the corresponding direction.
- the motor 1 has an output shaft 101 that is rotatable in both directions.
- the output shaft 101 of the motor and the lead screw 9 are coupled by a motor coupling 3 and a screw coupling 6 to transmit bidirectional rotation of the output shaft of the motor 1 to the lead screw 9.
- the motor coupling 3 and the screw coupling 6 are connected together by a cross-shaped adapter 4. Both the motor coupling 3 and the screw coupling 6 have two protruding fingers for fitting into the cross-shaped adapter 4.
- the material of the cross-shaped adapter 4 may be an elastic material. However, this is merely an example, and the motor coupling 3 and the screw coupling 6 may be connected together by other means.
- the screw coupling 6 is in the form of a boss that fits snugly against the lead screw 9 and has projecting ends with protruding fingers.
- the outer casing includes a first portion 5 and a second portion 20 that are axially disassemblable, hereinafter referred to as a first portion 5 being a motor mount 5, and a second portion being a lead screw housing.
- the motor base is coupled to the motor, for example by connecting the threaded holes in the boss of the motor 1 with the corresponding threaded holes 102 in the motor base with bolts 2; the lead screw is mainly housed in the screw housing 20.
- the motor base 5 has a square outer shape
- the screw housing 20 has a circular outer shape.
- the end of all the components close to the motor is referred to as the proximal end, and the end away from the motor is referred to as the distal end.
- the bearing 7 is used to support the lead screw 9.
- the bearing 7 is placed over the screw coupling 6.
- the proximal end of the bearing 7 is defined by the lumen shoulder of the distal end of the motor mount 5, the distal end of which is defined by the shoulder of the lumen of the proximal end of the lead screw housing 20. Further, the distal end of the bearing 7 is also fixed by a round nut 8.
- the distal end of the motor base 5 has a stepped hole, and the stepped surface (end surface) of the stepped hole is fitted to the side of the proximal end of the outer ring of the bearing 7, and the proximal end of the screw housing 20 has a circular convex shape.
- the screw coupling 6 has a flange 61 with a side away from the motor in the side of the flange against the first side of the inner ring of the bearing, the second side of the inner ring of the bearing being fixed by a nut.
- the form of the bearing 7 is not limited, and any suitable type of bearing such as a ball bearing may be employed.
- the linear actuator also has a coaxial spindle nut 11 and a slide tube 12 that are rigidly coupled to each other.
- the spindle nut 11 has a portion 111 located inside the slide tube 12 and a flange 112 located outside the slide tube 13.
- the flange 112 is fastened with the slide tube 12, such as by bolts 10.
- the lead nut 11 is threadably engageable with the lead screw 9 to convert the rotational motion of the lead screw 9 into translation of the lead screw nut 11, thereby causing translational movement of the slide tube 12 relative to the interior of the housing.
- the lead screw housing portion 20 of the outer casing has a pin 15 which is received in the sliding chamber 121 of the slide tube 12 when assembled to prevent the rotation of the slide tube 12 and prevent the wire from being prevented.
- the rotation of the rod nut 11 ensures the translational movement of the spindle nut 11 together with the slide tube 12.
- reference numeral 13 denotes a collision preventing spacer
- reference numeral 14 denotes a hexagon socket countersunk screw.
- the function of the crash pad 13 and the countersunk screw 14 is to prevent the screw nut and the screw from disengaging when moving to the end.
- the national standard large washer grade A (GB/T96.1-2002) has a thickness of 1.1 mm, an internal diameter (abbreviated as the inner diameter) of 5.3 mm, and an outer diameter (referred to as an outer diameter) of 15 mm.
- the material is steel.
- spring steel has excellent comprehensive properties, such as mechanical properties (especially elastic limit, strength limit, yield ratio), anti-ballistic performance (ie anti-resistance Elasticity reduction performance, also known as anti-relaxation performance), fatigue properties, hardenability, physical and chemical properties (heat resistance, low temperature resistance, oxidation resistance, corrosion resistance, etc.).
- the spring steel is within the specified range, and the ability to elastically deform it to withstand a certain load, and no permanent deformation occurs after the load is removed.
- the thickness of the gasket is 2.5-3.2 mm, more preferably 2.9-3.1 mm; the outer diameter of the gasket is larger than the diameter of the inner hole of the screw nut and smaller than the sliding tube
- the diameter of the inner hole for example, in one example, the inner diameter of the screw nut is 12 mm, the inner diameter of the sliding tube is 20 mm, and the outer diameter of the spacer is 17.5 to 19.5 mm, and the thickness of the spacer is preferably, for example.
- the ability and strength of the elastic deformation of the spring steel gasket of the embodiment of the present invention is greatly enhanced compared to the gasket of the national standard.
- reference numeral 17 indicates a cylinder sleeve, and the cylinder sleeve 17 is made of a wear resistant material. In the same manner, it is mounted on the screw housing 20 and moves relative to the sliding tube 12.
- the screw housing 20 has a hole 15, which is suitable as a venting hole and a wrench point, and the inside of the screw housing 20 is positively pressurized by the exhaust, and is used as a wrench to facilitate operation. Easy to install, disassemble and adjust.
- the end of the screw housing 20 is attached with a cover 18 in which the cover 18 is secured to the screw housing 20 by screws 10.
- the outer casing is divided into a motor seat portion and a screw housing portion to facilitate assembly, and the motor seat portion and the screw housing portion can define bearings; and the nut portion is located outside the sliding tube. With flanges for easy assembly and saving parts.
- a linear actuator having an anti-pre-clamping function according to another embodiment of the present invention will now be described with reference to FIGS. 3 and 4.
- FIG 3 shows an exploded view of a linear actuator in accordance with another embodiment of the present invention.
- FIG. 4 shows an exploded view of a linear actuator in accordance with another embodiment of the present invention.
- the anti-collision ring 21 is added, and the anti-collision ring 21 is disposed at the front end of the screw rod 9, and is located between the outer side of the sliding tube 12 and the bearing 7, preventing The striker 21 is pressed (tightened) by the bearing 7 and the housing portion 20, so the anti-collision ring is fixed.
- the sliding tube 12 moves along the axial direction of the screw rod 9 under the rotation of the screw nut 11, and when the screw nut 11 and the round nut 8 are in contact, the round nut 8 and the bearing 7 are inside.
- the ring rotates together under the rotational inertia force of the screw nut 11, and the screw nut and the screw rod cause a rotation preload and a jam occurs.
- the linear transmission device of the embodiment of the present invention is provided with the anti-collision ring 21, and the sliding tube 12 is moved along the axial direction of the screw rod 9 under the rotation of the screw nut 11, when the screw nut 11 and the anti-collision ring 21 are After the contact, the screw nut 11 will vertically hit the anti-collision ring 21 under the action of its own inertia force (because the anti-collision ring 21 is fixed, it will not rotate together with the rotational inertia force of the screw nut 11) ), the rotational inertia force of the screw nut 11 is finally canceled, so that the screw nut and the screw do not cause the rotation preload to be stuck.
- the material of the crash ring 21 may be, for example, 45 steel.
- a method of disassembling a linear actuator which may include:
- the connecting member that connects the motor 1 to the first portion of the outer casing, such as the removal of the screw 2, is removed.
- the driven portion is integrally pulled out from the second portion of the outer casing, that is, the inner cavity of the screw housing portion 20, the driven portion including at least one bearing 7, a lead screw 9, and a screw nut 11 interconnected with each other. And a sliding tube 12.
- the method of disassembling the linear actuator according to the embodiment of the present invention can relatively easily remove the driven portion for maintenance and replacement.
- a screw is often used as an example of a connecting member, but this is merely an example, and those skilled in the art can select other connecting members as needed.
Abstract
线性传动装置包括：电机；丝杆；电机联轴器和丝杆联轴器；轴承，支撑丝杆；外壳，具有内腔，丝杆容纳在外壳的内腔中，外壳包括能够轴向拆开的第一部分和第二部分，第一部分与电机连接，轴承被固定在第一部分与第二部分相衔接的部分；同轴丝杆螺母和滑动管，丝杆螺母具有位于滑动管内的部分和位于滑动管外的凸缘，凸缘与滑动管紧固在一起，丝杆螺母与丝杆啮合，将丝杆的旋转运动转换成丝杆螺母的平移，带动滑动管进行平移运动；防撞圈，布置于丝杆前端，位于丝杆壳体部分和轴承外圈中间。将外壳分为两部分，便于装配，且这两部分用于限定轴承；螺母部分位于滑动管外，具有凸缘，易于装配，节省零件；防撞圈能够防止丝杆和丝杆螺母预紧卡死。
Description
本发明总体地涉及线性传动装置，更具体地涉及用于运动模拟的线性传动装置。
在视频、电影、游戏等产业中，为了增强观众或游戏参与者的体验，除了图像和声音外，还可以向其提供运动体验、气味体验、湿度体验等各种体验。在提供运动体验时，一般通过使得观众坐着的椅子、赛车等产生与图像、声音序列同步的运动来实现。
发明内容
在这种运动模拟中，一般需要使用线性传动器，将伺服电机的旋转运动转换成直线运动，下文中将电机部分称为主动部分，将接受主动部分传递的运动的部分称为从动部分，人们希望主动部分和从动部分之间的连接、所涉及的轴承的支撑能够容易拆卸、而且节省零部件。
根据本发明的一个方面，提供了一种线性传动装置，可以包括：电机，具有能够双向旋转的输出轴；丝杆；电机联轴器和丝杆联轴器，用于联接电机的输出轴和丝杆，以将电机的输出轴的双向旋转传递给丝杆；轴承，用于支撑丝杆；外壳，所述外壳具有内腔，所述丝杆容纳在所述外壳的内腔中，所述外壳包括能够轴向拆开的第一部分和第二部分，第一部分与电机连接，轴承被固定在第一部分与第二部分相衔接的部分；彼此刚性连接在一起的同轴丝杆螺母和滑动管，丝杆螺母具有位于滑动管内的部分和位于滑动管外的凸缘，凸缘与滑动管紧固在一起，丝杆螺母能够与丝杆啮合，从而将丝杆的旋转运动转换成丝杆螺母的平移，从而带动滑动管相对于所述外壳的内腔进行平移运动；以及防撞圈，布置于丝杆前端，位于丝杆壳体部分和轴承外圈中间，从而当滑动管撞到防撞圈时，因为防撞圈是固定的而滑动管是垂直撞
击的，所以两者不会造成预紧。
根据本发明实施例的线性传动装置，还可以包括：防撞垫片(13)，固定于丝杠末端，直径大于丝杆直径，且与丝杆螺母配合，用于防止丝杆螺母从丝杆脱落。
根据本发明实施例的线性传动装置，其中所述防撞垫片材质可以为弹簧钢。
根据本发明实施例的线性传动装置，所述垫片的厚度可以为2.5～3.2毫米，外径大于丝杆螺母的内孔直径且小于滑动管的内孔直径。
根据本发明实施例的线性传动装置，所述垫片的厚度为2.9-3.1毫米，丝杆螺母的内孔直径为12毫米，滑动管的内孔直径为20毫米，垫片的外径为17.5～19.5毫米。
根据本发明的一个方面，提供了一种线性传动装置，可以包括：电机，具有能够双向旋转的输出轴；丝杆；电机联轴器和丝杆联轴器，用于联接电机的输出轴和丝杆，以将电机的输出轴的双向旋转传递给丝杆；轴承，用于支撑丝杆；外壳，所述外壳具有内腔，所述丝杆容纳在所述外壳的内腔中，所述外壳包括能够轴向拆开的第一部分和第二部分，第一部分与电机连接，轴承被固定在第一部分与第二部分相衔接的部分；以及彼此刚性连接在一起的同轴丝杆螺母和滑动管，丝杆螺母具有位于滑动管内的部分和位于滑动管外的凸缘，凸缘与滑动管紧固在一起，丝杆螺母能够与丝杆啮合，从而将丝杆的旋转运动转换成丝杆螺母的平移，从而带动滑动管相对于所述外壳的内腔进行平移运动。
根据本发明实施例的线性传动装置，第一部分可以具有台阶孔，台阶孔的周面与轴承的周面结合，台阶孔的台阶面与轴承的外圈的第一侧面结合，第二部分具有圆环形的凸出端部，该凸出端部的端面顶住轴承的外圈的第二侧面，该凸出端部的外圆周面与第一部分的台阶孔的周面紧密配合。
根据本发明实施例的线性传动装置，丝杆联轴器可以具有凸缘，凸缘的侧面中远离电机的侧面顶住轴承的内圈的第一侧面，轴承的内圈的第二侧面通过螺母来固定。
根据本发明实施例的线性传动装置，外壳部分可以具有孔，适于作为排气孔和扳手着力点。
根据本发明实施例的线性传动装置，滑动管上可以具有凹槽，外壳上可
以具有引导部件，引导部件可以容纳在所述凹槽内，以阻止所述滑动管的轴向转动。
根据本发明实施例的线性传动装置，电机联轴器和丝杆联轴器可以均具有一对凸出的指状物，线性传动装置还可以包括十字形耦接件，电机联轴器的一对凸出的指状物和丝杆联轴器的一对凸出的指状物均插入十字形耦接件，形成三者的彼此紧固连接。
根据本发明实施例的线性传动装置，第一部分可以具有方形外形，第二部分可以具有圆形外形。
根据本发明实施例的线性传动装置，滑动管远离电机的一端可以安装有加油盖，用于给丝杆添加润滑油。
根据本发明实施例的线性传动装置将外壳分为电机座部分和丝杆壳体部分，使得便于装配，而且电机座部分和丝杆壳体部分可以限定轴承；另外螺母部分位于滑动管外，具有凸缘，易于装配，节省零件。
根据本发明的另一方面，提供了一种用于拆卸线性传动装置的方法，可以包括：拆除将电机与外壳的第一部分连接的连接部件；拆除电机；拆除第一部分；从外壳接近电机的一端、从第二部分的内腔中整体地拉出从动部分，从动部分包括彼此互连的至少一轴承、丝杆、丝杆螺母以及滑动管。
根据本发明实施例的拆卸线性传动装置的方法能够比较容易地拆下从动部分，便于维修和更换。
从下面结合附图对本发明实施例的详细描述中，本发明的这些和/或其它方面和优点将变得更加清楚并更容易理解，其中：
图1示出了根据本发明实施例的线性传动装置的分解图。
图2示出了根据本发明实施例的线性传动装置的剖面图。
图3示出了根据本发明另一实施例的线性传动装置的分解图。
图4示出了根据本发明另一实施例的线性传动装置的分解图。
为了使本领域技术人员更好地理解本发明，下面结合附图和具体实施方式对本发明作进一步详细说明。
图1示出了根据本发明实施例的线性传动装置100的分解图。图2示出了根据本发明实施例的线性传动装置100的剖面图。
线性传动装置100适合于安装例如在地面和座椅之间，接收运动信号代码(例如表示向某个方向移动某个距离的信号)，在运动控制器的控制下，驱动线性传动装置100的电机，线性传动装置100产生沿着轴向方向的平移。这里的运动信号代码旨在与图像和/或声音同步地移动线性传动装置，进而移动座椅，给座椅上的观众带来运动感体验。
线性传动装置100包括电机1、丝杆9、电机联轴器3和丝杆联轴器6、轴承7、外壳的第一部分5和第二部分20、同轴的丝杆螺母11和滑动管12。
电机1接收电运动信号，将其转换成相应方向的旋转输出。电机1具有能够双向旋转的输出轴101。
电机的输出轴101和丝杆9通过电机联轴器3和丝杆联轴器6联接起来，以将电机1的输出轴的双向旋转传递给丝杆9。
在图示示例中，电机联轴器3和丝杆联轴器6通过十字形接合器4连接在一起。电机联轴器3和丝杆联轴器6均具有两个突出的指状物，用于嵌合到十字形接合器4中。十字形接合器4的材质可以为弹性材料。不过这仅为示例，电机联轴器3和丝杆联轴器6可以通过其他方式连接在一起。
丝杆联轴器6为凸台形式，与丝杆9紧密配合，其突出端部具有突出的指状物。
在本示例中，外壳包括能够轴向拆开的第一部分5和第二部分20，下文中称第一部分5为电机座5，称第二部分为丝杆壳体。电机座与电机连接，例如通过用螺栓2连接电机1的凸台上的螺纹孔和电机座上的对应螺纹孔102；丝杆主要容纳在丝杆壳体20中。在图1所示示例中，电机座5具有方形外形，丝杆壳体20具有圆形外形。
下文中，所有部件靠近电机的一端称为近端，远离电机的一端称为远端。
轴承7用于支撑丝杆9。轴承7套在丝杆联轴器6上。轴承7的近端由电机座5的远端的内腔肩部限定，轴承7的远端由丝杆壳体20的近端的内腔的肩部限定。此外，轴承7的远端还采用圆螺母8固定。换句话说，电机座5的远端具有台阶孔，台阶孔的台阶面(端面)与轴承7的外圈的近端的侧面贴合，丝杆壳体20的近端具有圆环形的凸出端部，该凸出端部的端面
顶住轴承的外圈的远端的侧面，该凸出端部的外圆周面与电机座5的台阶孔的周面紧密配合。丝杆联轴器6具有凸缘61，凸缘的侧面中远离电机的侧面顶住轴承的内圈的第一侧面，轴承的内圈的第二侧面通过螺母来固定。
轴承7的形式没有限制，可以采用滚珠轴承等任何合适类型的轴承。
线性传动装置还具有彼此刚性连接在一起的同轴丝杆螺母11和滑动管12。丝杆螺母11具有位于滑动管12内的部分111和位于滑动管13外的凸缘112。凸缘112与滑动管12紧固在一起，例如通过螺栓10。丝杆螺母11能够与丝杆9螺纹啮合，从而将丝杆9的旋转运动转换成丝杆螺母11的平移，从而带动滑动管12相对于所述外壳的内腔进行平移运动。
在图1所示示例中，外壳的丝杆壳体部分20上具有销钉15，该销钉15装配时容纳于滑动管12的滑动腔121中，以防止滑动管12的转动，也就防止了丝杆螺母11的转动，从而保证了丝杆螺母11连同滑动管12的平移运动。
在图1所示示例中，标号13指示防撞垫片，标号14指示内六角沉头螺钉。防撞垫片13和沉头螺钉14的作用是防止丝杆螺母和丝杆在运动到末端时脱离。
国家标准的大垫圈A级(GB/T96.1-2002)其厚度为1.1毫米，内部直径(简称内径)为5.3毫米，外部直径(简称外径)为15毫米，材质为钢。
经大量实验，发明人将防撞垫片的材质确定为弹簧钢：弹簧钢具有优良的综合性能，如力学性能(特别是弹性极限、强度极限、屈强比)、抗弹减性能(即抗弹性减退性能，又称抗松弛性能)、疲劳性能、淬透性、物理化学性能(耐热、耐低温、抗氧化、耐腐蚀等)。弹簧钢在规定的范围之内，弹性变形的能力使其承受一定的载荷，在载荷去除之后不出现永久变形。
经实验，发明人确定了弹簧钢垫片的优选参数为：垫片的厚度为2.5～3.2毫米，更优选为2.9-3.1毫米；垫片外径大于丝杆螺母的内孔直径且小于滑动管的内孔直径，例如在一个示例中，丝杆螺母的内孔直径为12毫米，滑动管的内孔直径为20毫米，垫片的外径为17.5～19.5毫米，再例如优选将垫片厚度设置为3mm，直径设置为φ18.6mm。相比于国标的垫片，本发明实施例的弹簧钢垫片的弹性变形的能力和强度大大增强。
在图1所示示例中，标号17指示缸体内套，缸体内套17由耐磨材料做
成，镶嵌在丝杆壳体20上，与滑动管12相对运动。
在图1所示示例中，丝杆壳体20具有孔15，适于作为排气孔和扳手着力点，通过排气使得丝杆壳体20内部为正压，以及作为扳手着力点使得便于操作，易于安装、拆卸和调整。
在图1所示示例中，丝杆壳体20末端连接有盖子18，图示中通过螺钉10将盖子18固定到丝杆壳体20。
上述图1所示的线性传动装置中，将外壳分为电机座部分和丝杆壳体部分，使得便于装配，而且电机座部分和丝杆壳体部分可以限定轴承；另外螺母部分位于滑动管外，具有凸缘，易于装配，节省零件。
下面结合图3和图4描述根据本发明另一实施例的具有防预紧卡死功能的线性传动装置。
图3示出了根据本发明另一实施例的线性传动装置的分解图。
图4示出了根据本发明另一实施例的线性传动装置的分解图。
如图3和图4所示，相比于图1和图2，多了防撞圈21，防撞圈21布置于丝杆9的前端，位于滑动管12和轴承7的外圈中间，防撞圈21被轴承7和壳体部分20压紧(顶紧)，所以防撞圈是固定的。
在没有增加防撞圈21前:滑动管12在丝杆螺母11旋转带动下一起沿丝杠9轴向方向移动，当丝杆螺母11和圆螺母8相接触后，圆螺母8和轴承7内圈在丝杆螺母11的旋转惯性力的作用下一起转动，丝杆螺母和丝杆会造成旋转预紧而出现卡死。
相对比，本发明实施例的线性传动装置设置了防撞圈21，滑动管12在丝杆螺母11旋转带动下一起沿丝杠9轴向方向移动，当丝杆螺母11和防撞圈21相接触后，丝杆螺母11在自身旋转惯性力的作用下就会垂直撞击防撞圈21(因为防撞圈21是固定的，所以不会随丝杆螺母11的旋转惯性力的作用下一起转动)，最终将丝杆螺母11的旋转惯性力抵消，所以丝杆螺母和丝杆不会造成旋转预紧而出现卡死。防撞圈21的材质例如可以为45钢。
下面描述根据本发明实施例的拆卸线性传动装置的方法，可以包括：
首先，拆除将电机1与外壳的第一部分连接的连接部件，例如拆除螺丝2。
接下来，拆除电机1。
然后拆除电机座部分5。
最后从外壳的第二部分，即丝杆壳体部分20的内腔中整体地拉出从动部分，所述从动部分包括彼此互连的至少一轴承7、丝杆9、丝杆螺母11以及滑动管12。
根据本发明实施例的拆卸线性传动装置的方法能够比较容易地拆下从动部分，便于维修和更换。
上面的示例性描述中，多次以螺丝作为连接部件的例子，不过这仅为示例，本领域技术人员可以根据需要选择其它连接部件。
以上已经描述了本发明的各实施例，上述说明是示例性的，并非穷尽性的，并且也不限于所披露的各实施例。在不偏离所说明的各实施例的范围和精神的情况下，对于本技术领域的普通技术人员来说许多修改和变更都是显而易见的。因此，本发明的保护范围应该以权利要求的保护范围为准。
Claims (24)
- 一种线性传动装置，包括：电机，具有能够双向旋转的输出轴；丝杆；电机联轴器和丝杆联轴器，用于联接电机的输出轴和丝杆，以将电机的输出轴的双向旋转传递给丝杆；轴承，用于支撑丝杆；外壳，所述外壳具有内腔，所述丝杆容纳在所述外壳的内腔中，所述外壳包括能够轴向拆开的第一部分和第二部分，第一部分与电机连接，轴承被固定在第一部分与第二部分相衔接的部分；以及彼此刚性连接在一起的同轴丝杆螺母和滑动管，丝杆螺母具有位于滑动管内的部分和位于滑动管外的凸缘，凸缘与滑动管紧固在一起，丝杆螺母能够与丝杆啮合，从而将丝杆的旋转运动转换成丝杆螺母的平移，从而带动滑动管相对于所述外壳的内腔进行平移运动。
- 根据权利要求1的线性传动装置，第一部分具有台阶孔，台阶孔的周面与轴承的周面结合，台阶孔的台阶面与轴承的外圈的第一侧面结合，第二部分具有圆环形的凸出端部，该凸出端部的端面顶住轴承的外圈的第二侧面，该凸出端部的外圆周面与第一部分的台阶孔的周面紧密配合。
- 根据权利要求1或2的线性传动装置，所述丝杆联轴器具有凸缘，凸缘的侧面中远离电机的侧面顶住轴承的内圈的第一侧面，轴承的内圈的第二侧面通过螺母来固定。
- 根据权利要求1或2的线性传动装置，所述外壳部分具有孔，适于作为排气孔和扳手着力点。
- 根据权利要求1或2的线性传动装置，所述滑动管上具有凹槽，所述外壳上具有引导部件，所述引导部件容纳在所述凹槽内，以阻止所述滑动管的轴向转动。
- 根据权利要求1或2的线性传动装置，所述电机联轴器和丝杆联轴器均具有一对凸出的指状物，所述线性传动装置还包括十字形耦接件，所述电机联轴器的一对凸出的指状物和丝杆联轴器的一对凸出的指状物均插入十 字形耦接件，形成三者的彼此紧固连接。
- 根据权利要求1或2的线性传动装置，所述第一部分具有方形外形，所述第二部分具有圆形外形。
- 根据权利要求1或2的线性传动装置，所述滑动管远离电机的一端安装有加油盖，用于给丝杆添加润滑油。
- 根据权利要求1或2的线性传动装置，所述外壳具有由耐磨材料做成的内套。
- 根据权利要求1或2的线性传动装置，还包括：防撞垫片(13)，固定于丝杠末端，直径大于丝杆直径，且与丝杆螺母配合，用于防止丝杆螺母从丝杆脱落。
- 一种用于拆卸线性传动装置的方法，包括：拆除将所述电机与外壳的第一部分连接的连接部件；拆除电机；拆除所述第一部分；从外壳接近电机的一端、从第二部分的内腔中整体地拉出从动部分，所述从动部分包括彼此互连的至少一轴承、丝杆、丝杆螺母以及滑动管。
- 一种线性传动装置，包括：电机，具有能够双向旋转的输出轴；丝杆；电机联轴器和丝杆联轴器，用于联接电机的输出轴和丝杆，以将电机的输出轴的双向旋转传递给丝杆；轴承，用于支撑丝杆；外壳，所述外壳具有内腔，所述丝杆容纳在所述外壳的内腔中，所述外壳包括能够轴向拆开的第一部分和第二部分，第一部分与电机连接，轴承被固定在第一部分与第二部分相衔接的部分；彼此刚性连接在一起的同轴丝杆螺母和滑动管，丝杆螺母具有位于滑动管内的部分和位于滑动管外的凸缘，凸缘与滑动管紧固在一起，丝杆螺母能够与丝杆啮合，从而将丝杆的旋转运动转换成丝杆螺母的平移，从而带动滑动管相对于所述外壳的内腔进行平移运动；以及防撞圈，布置于丝杆前端，位于丝杆壳体部分和轴承外圈中间，被轴承(7)和壳体部分(20)压紧。
- 根据权利要求12的线性传动装置，还包括：防撞垫片(13)，固定于丝杠末端，直径大于丝杆直径，且与丝杆螺母配合，用于防止丝杆螺母从丝杆脱落。
- 根据权利要求13的线性传动装置，其中：所述防撞垫片材质为弹簧钢。
- 根据权利要求14的线性传动装置，所述垫片的厚度为2.5～3.2毫米，外径大于丝杆螺母的内孔直径且小于滑动管的内孔直径。
- 根据权利要求15的线性传动装置，所述垫片的厚度为2.9-3.1毫米，丝杆螺母的内孔直径为12毫米，滑动管的内孔直径为20毫米，垫片的外径为17.5～19.5毫米。
- 根据权利要求12的线性传动装置，第一部分具有台阶孔，台阶孔的周面与轴承的周面结合，台阶孔的台阶面与轴承的外圈的第一侧面结合，第二部分具有圆环形的凸出端部，该凸出端部的端面顶住轴承的外圈的第二侧面，该凸出端部的外圆周面与第一部分的台阶孔的周面紧密配合。
- 根据权利要求12或13的线性传动装置，所述丝杆联轴器具有凸缘，凸缘的侧面中远离电机的侧面顶住轴承的内圈的第一侧面，轴承的内圈的第二侧面通过螺母来固定。
- 根据权利要求12或13的线性传动装置，所述外壳部分具有孔，适于作为排气孔和扳手着力点。
- 根据权利要求12或13的线性传动装置，所述滑动管上具有凹槽，所述外壳上具有引导部件，所述引导部件容纳在所述凹槽内，以阻止所述滑动管的轴向转动。
- 根据权利要求12或13的线性传动装置，所述电机联轴器和丝杆联轴器均具有一对凸出的指状物，所述线性传动装置还包括十字形耦接件，所述电机联轴器的一对凸出的指状物和丝杆联轴器的一对凸出的指状物均插入十字形耦接件，形成三者的彼此紧固连接。
- 根据权利要求12或13的线性传动装置，所述第一部分具有方形外形，所述第二部分具有圆形外形。
- 根据权利要求12或13的线性传动装置，所述滑动管远离电机的一端安装有加油盖，用于给丝杆添加润滑油。
- 根据权利要求12或13的线性传动装置，所述外壳具有由耐磨材料做成的内套。
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| CN108386505A (zh) * | 2018-05-14 | 2018-08-10 | 郑州润华智能设备有限公司 | 一种密封式丝杆型线性模组 |
| CN108386505B (zh) * | 2018-05-14 | 2024-03-26 | 郑州润华智能设备有限公司 | 一种密封式丝杆型线性模组 |
| CN109040571A (zh) * | 2018-10-31 | 2018-12-18 | 深圳市兆威机电股份有限公司 | 摄像头伸缩装置及终端 |
| CN110266142A (zh) * | 2019-07-30 | 2019-09-20 | 韦孚（杭州）精密机械有限公司 | 一种用于电阻点焊的直连式伺服电机 |
| CN113620213A (zh) * | 2021-08-11 | 2021-11-09 | 深圳市特辰科技股份有限公司 | 一种螺母自适应丝杆动力的爬架 |
| CN115488608A (zh) * | 2022-10-18 | 2022-12-20 | 广州松兴电气股份有限公司 | 一种轴箱自动搬运装配装置 |
| CN116241621A (zh) * | 2023-05-10 | 2023-06-09 | 合肥市行知智造医疗科技有限责任公司 | 一种便于拆装的丝杆传动机构 |
| CN116241621B (zh) * | 2023-05-10 | 2023-07-07 | 合肥市行知智造医疗科技有限责任公司 | 一种便于拆装的丝杆传动机构 |
| CN117261859A (zh) * | 2023-11-21 | 2023-12-22 | 上海威肯西科技有限公司 | 一种传动助力装置及其制造方法 |
| CN117261859B (zh) * | 2023-11-21 | 2024-03-01 | 上海威肯西科技有限公司 | 一种传动助力装置及其制造方法 |
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