CN109058408B - A retractable multifunctional mechanical intermittent transmission device - Google Patents
A retractable multifunctional mechanical intermittent transmission device Download PDFInfo
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- CN109058408B CN109058408B CN201810935376.XA CN201810935376A CN109058408B CN 109058408 B CN109058408 B CN 109058408B CN 201810935376 A CN201810935376 A CN 201810935376A CN 109058408 B CN109058408 B CN 109058408B
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- intermittent
- transmission
- positioning column
- hub
- arc block
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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
- F16H29/00—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action
- F16H29/12—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between rotary driving and driven members
- F16H29/16—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between rotary driving and driven members in which the transmission ratio is changed by adjustment of the distance between the axes of the rotary members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Transmission Devices (AREA)
Abstract
本发明涉及一种可伸缩式多功能机械间歇传动装置。其不但可以实现多运动的间歇传动，而且也可以解决日常生活中的载重爬楼问题。本发明采用的技术方案包括轮毂、与轮毂过盈配合的主体和传动轴，轮毂圆周面上均布设置有三个定位柱一，主体上均布设置有成120°的三个阶梯腔，每个阶梯腔内设置有伸出的圆弧块，圆弧块的底部设置有定位柱二，伸出端设置有间歇齿一，定位柱二上套设有弹簧，定位柱二和定位柱一相对设置并接触，弹簧的另一端套设于定位柱一上；轮毂与动力输入轴连接，传动轴上设置有与圆弧块的间歇齿一相啮合的间歇齿二，间歇齿二将传动轴分为摩擦传动段和间歇传动段，间歇传动段根据需要可分为一次间歇传动、二次间歇传动等。
The invention relates to a retractable multifunctional mechanical intermittent transmission device. It can not only realize multi-motion intermittent transmission, but also solve the problem of load climbing in daily life. The technical solution adopted by the present invention includes a hub, a main body that is in interference fit with the hub, and a transmission shaft. Three positioning columns are evenly arranged on the circumferential surface of the hub, and three stepped cavities of 120° are arranged on the main body. The stepped cavity is provided with a protruding circular arc block, the bottom of the circular arc block is provided with a positioning column 2, the extended end is provided with an intermittent tooth 1, a spring is sleeved on the positioning column 2, and the positioning column 2 and the positioning column 1 are arranged opposite to each other. The other end of the spring is sleeved on the first positioning column; the hub is connected with the power input shaft, and the transmission shaft is provided with the second intermittent tooth meshing with the intermittent tooth one of the arc block, and the second intermittent tooth divides the transmission shaft into two parts. Friction transmission section and intermittent transmission section. Intermittent transmission section can be divided into primary intermittent transmission and secondary intermittent transmission according to needs.
Description
Technical Field
The invention belongs to the field of mechanical transmission, and particularly relates to a telescopic multifunctional mechanical intermittent transmission device which is suitable for a mechanical device for transmitting torque or speed when intermittent transmission is needed.
Background
With the rapid development of economy in China, an intermittent transmission mechanism is needed for a production line, food packaging and the like, the existing intermittent transmission mechanism only has two movements, namely, a driving part rotation and a driven part intermittent rotation or intermittent translation. When the driving piece needs to move and rotate intermittently and the driven piece rotates intermittently, the existing transmission method can lead the mechanical transmission mechanism to become bulky, large in size and easy to break down.
Disclosure of Invention
In view of the above, the present invention provides a retractable multifunctional mechanical intermittent transmission device, which not only can realize intermittent transmission of multiple movements, but also can solve the problem of load climbing in daily life.
In order to solve the problems in the prior art, the technical scheme of the invention is as follows: the utility model provides a multi-functional mechanical intermittent type transmission of retractable, includes wheel hub, with wheel hub interference fit's main part and transmission shaft, its characterized in that: three positioning columns I are uniformly distributed on the circumferential surface of the hub, three step cavities which form an angle of 120 degrees are uniformly distributed on the main body, an extended arc block is arranged in each step cavity, the radian is arranged on the outer side of each arc block, a positioning column II is arranged at the bottom of each arc block, an extended end is provided with an intermittent tooth I with gradually increasing tooth peaks, and 3 teeth are arranged on the intermittent tooth I; a spring is sleeved on the second positioning column, the second positioning column is opposite to and in contact with the first positioning column, and the other end of the spring is sleeved on the first positioning column;
the hub is connected with the power input shaft, the transmission shaft is provided with a second intermittent tooth meshed with the first intermittent tooth of the arc block, and the second intermittent tooth divides the transmission shaft into a friction transmission section and an intermittent transmission section.
The number of the intermittent teeth II which are uniformly distributed on the 3 circles is 1, 2 and 3 respectively.
The main body is a tire or a gear.
Compared with the prior art, the invention has the following advantages:
1. the invention has simple structure and ingenious conception, realizes complex movement requirements with few parts, has small volume, and reduces the possibility of fault generation because of few transmission parts;
2. the invention can realize multi-motion intermittent transmission, has a buffer function, and can protect a transmission part from being damaged when encountering impact load during transmission;
3. the invention can realize the planetary motion of the motion body, namely, the motion around the shaft and the rotation can be realized. When the triple gear on the transmission shaft is met, the movement of the main body around the shaft is stopped, and the meshing transmission of the arc block on the main body and the transmission shaft is realized; and the transmission shaft can be shifted to move in the axial direction, so that the arc block on the main body can be meshed with the primary intermittent transmission section, the secondary intermittent transmission section and the like, and further multi-intermittent-section transmission can be realized.
4. The invention can realize multifunctional expansion: when the invention is used in carrying traffic, the arc block and the spring can be matched to smoothly pass through a flat ground or an uneven dirt road; when the slope goes up, the arc block can be stopped on the slope in time without the action of traction force; the main body can be prevented from being reversed when the main body is on an upward slope, and the friction force between the three gaps of the arc block and the ground is increased to prevent the main body from slipping. When the invention is used independently, the invention can be used for carrying objects, climbing slopes, climbing stairs and the like.
Drawings
FIG. 1 is a front view of a tire according to an embodiment of the present invention;
FIG. 2 is an isometric view of a hub according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a tire according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 5 is an isometric view of an arc block of an embodiment of the invention;
FIG. 6 is a cross-sectional view of a tire and hub combination according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view A-A of FIG. 6;
FIG. 8 is an isometric view of an embodiment of the present invention;
FIG. 9 is an isometric view of a drive shaft according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of the operation of the arc block;
FIG. 11 is an example computation graph;
in the figure: 1. a hub; 2. a first positioning column; 3. a main body; 4. a stepped cavity; 5. an arc block; 6. a second positioning column; 7. a spring; 8. an input shaft; 9. a drive shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides a telescopic multifunctional mechanical intermittent transmission device (see fig. 1-8), which comprises a hub 1, a positioning column I2, a main body (tire) 3, a stepped cavity 4, an arc block 5, a positioning column II 6, a spring 7, an input shaft 8 and a transmission shaft 9, wherein the tire is arranged on the hub 1 in an interference fit manner to form a movement main body mechanism; three positioning columns I2 are uniformly distributed on the circumferential surface of the hub 1, three step cavities 4 forming an angle of 120 degrees are uniformly distributed on the tire, an extended arc block 5 is arranged in each step cavity 4, the radian is arranged on the outer side of the arc block 5, the bottom of the arc block is a plane, a positioning column II 6 is arranged at the bottom of the arc block 5, an extended end is provided with an intermittent tooth I with gradually increasing tooth peaks, and 3 teeth are arranged on the intermittent tooth I; a spring 7 is sleeved on the second positioning column 6, the second positioning column 6 is opposite to and in contact with the first positioning column 2, and the other end of the spring 7 is sleeved on the first positioning column 2; the hub 1 is connected with the power input shaft 8, the transmission shaft 9 is provided with a second intermittent tooth meshed with the first intermittent tooth of the circular arc block 5, the second intermittent tooth divides the transmission shaft 9 into a friction transmission section and an intermittent transmission section, and the intermittent transmission section can be divided into primary intermittent transmission, secondary intermittent transmission and the like according to requirements.
3 circles of intermittent teeth are circumferentially arranged on the transmission shaft 9, and the number of the intermittent teeth II with 3 circles uniformly distributed is 1, 2 and 3 respectively (see fig. 8 and 9).
The second intermittent teeth on the transmission shaft 9 can be rearranged according to the situation.
The main body 3 of the invention acts like a tire when the object is carried and climbed, and the main body 3 acts like a gear when the main body is used as an intermittent mechanism for transmission.
To further illustrate the working principle of the arc block when climbing stairs, the invention is characterized in that the schematic diagram of the arc block is shown in fig. 10.
The arc segment of the arc block 5 is formed by rho1、r1、d1、l1、ρ2、r2、d2、l2、ρ3、r3、d3、l3A circular arc segment, wherein the circular arc segment rho1When the wheel passes through a flat road, the spring 7 is compressed under the action of the gravity and the forward traction of the weight, and the arc section rho is formed1The body is smoothly compressed by the spring 7 for this travel. When the main body passes through the stroke of the spring 7 which is compressed, the arc block 5 returns to the original position under the elastic force of the spring 7. When the main body climbs the stairs under the action of traction force and passes through the first step, the main body is adjusted to be in a proper positionThe three notches of the arc block 5 on the main body are randomly arranged (formed by an arc section r)1、d1、l1Formed) is exactly clamped on the edge formed by the vertical surface and the plane of the first step, and then the resultant force of the symmetrical force of the edge to the main body is added to ensure that the main body smoothly passes through the obstacle formed by the vertical surface and the plane of the step under the action of the traction force.
Two different methods of use are shown below:
(1) when the main body is used as a wheel, the use method is as follows: (A common step is about 140mm high and about 290mm wide, for example) as shown in FIG. 11:
when main part A point was tangent with ground, the first breach B point of circular arc piece just blocked on the arris of step, by the step get the height H become 140mm, and establish the corresponding alpha of circular arc section AB of main part 144.5, then through calculating: r + sin (alpha-90 degree) R ═ 140 (1)
R is 77.17mm when formula (1) is solved
Get the width by the step and be 290mm, get the plane tangent when the C point of main part and second step, flat and another arc piece third breach A point on the wheel this moment just blocks on the arris is got to the second step, and it is from B point to C point rotation angle beta that obtains through calculating:
β/180°*π*R+α/180°*π*R＝W (2)
by resolving formula (2) to obtain beta of 71 °
Therefore, the wheels can smoothly pass through obstacles caused by the steps of the stairs by utilizing the acting force between the arc blocks and the steps under the acting force of the traction force.
The embodiment is only directed at the most common stair steps, when different steps are met, the radius R of the wheel can be calculated according to the sizes of the steps, and the size of the arc block can be timely changed to meet actual requirements.
(2) When the main body is used as a transmission intermittent gear of a telescopic multifunctional mechanical intermittent transmission device, the use method is as follows:
the rotating shaft of the mechanical intermittent transmission device is arranged at the circular center of the planetary motion track of the main body, and the planetary motion of the main body is realized to rotate around the transmission shaft and rotate. When meeting the triple gear on the transmission shaft, the movement around the shaft is stopped, and the meshing transmission of the motion main body and the transmission shaft is realized. And the transmission shaft can be shifted to move in the axial direction, so that the main body can be meshed with the primary intermittent transmission section, the secondary intermittent transmission section and the like, and further multi-intermittent-section transmission can be realized. Thereby meeting various occasions needing multiple intermittent transmission sections in industry and daily life.
The invention can freely move under the condition of loading when the vehicle is used on flat ground, climbing slope or climbing stairs, thereby bringing great convenience to people.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810935376.XA CN109058408B (en) | 2018-08-16 | 2018-08-16 | A retractable multifunctional mechanical intermittent transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810935376.XA CN109058408B (en) | 2018-08-16 | 2018-08-16 | A retractable multifunctional mechanical intermittent transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109058408A CN109058408A (en) | 2018-12-21 |
| CN109058408B true CN109058408B (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810935376.XA Expired - Fee Related CN109058408B (en) | 2018-08-16 | 2018-08-16 | A retractable multifunctional mechanical intermittent transmission device |
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| Country | Link |
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| CN (1) | CN109058408B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2409797A1 (en) * | 1974-03-01 | 1975-09-11 | Tosi Arduino | Torque increasing transmission gear - connects crank shaft to output shaft by oscillating levers and free wheel elements |
| CN1481485A (en) * | 2000-12-23 | 2004-03-10 | ���ء����߸� | Device for driving an output element |
| WO2015093055A3 (en) * | 2013-12-20 | 2015-10-01 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Drive power transmission device and control program therefor |
-
2018
- 2018-08-16 CN CN201810935376.XA patent/CN109058408B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2409797A1 (en) * | 1974-03-01 | 1975-09-11 | Tosi Arduino | Torque increasing transmission gear - connects crank shaft to output shaft by oscillating levers and free wheel elements |
| CN1481485A (en) * | 2000-12-23 | 2004-03-10 | ���ء����߸� | Device for driving an output element |
| WO2015093055A3 (en) * | 2013-12-20 | 2015-10-01 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Drive power transmission device and control program therefor |
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| Publication number | Publication date |
|---|---|
| CN109058408A (en) | 2018-12-21 |
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