CN1189254A - electric cylinder - Google Patents
electric cylinder Download PDFInfo
- Publication number
- CN1189254A CN1189254A CN97190392A CN97190392A CN1189254A CN 1189254 A CN1189254 A CN 1189254A CN 97190392 A CN97190392 A CN 97190392A CN 97190392 A CN97190392 A CN 97190392A CN 1189254 A CN1189254 A CN 1189254A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- electric
- ball nut
- ball screw
- ball
- 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.)
- Pending
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Classifications
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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
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- Transmission Devices (AREA)
Abstract
Description
技术领域technical field
本发明涉及一个电动汽缸，其中，借助一个丝杆机构将电马达产生的转动运动转换成线性运动。The invention relates to an electric cylinder in which the rotary motion produced by the electric motor is converted into linear motion by means of a screw mechanism.
技术背景technical background
已知电动汽缸广泛地用于各种工厂设备和机器。现参照图2来说明一个典型的电动汽缸情形。图2的常规汽缸主要由一个电马达11，一个通过传动元件13与电马达11的转轴11A连接的滚珠丝杆16，以及与滚珠丝杆16相配合的滚珠螺母14。在滚珠螺母端部有一个止推轴承15。止推轴承15与汽缸壳体12固结成一体。一个杆子17固定在滚珠螺母14上。在该电动汽缸中，通过电马达11的转轴11A的转动驱动来滚珠丝杆16转动，通过此丝杆机构使滚珠螺母产生线性运动。因此，固定在滚珠螺母14上的杆子17作前后往复运动。Electric cylinders are known to be widely used in various plant equipment and machines. Referring now to FIG. 2, a typical electric cylinder situation is illustrated. The conventional cylinder of FIG. 2 mainly consists of an electric motor 11 , a ball screw 16 connected to the rotating shaft 11A of the electric motor 11 through a transmission element 13 , and a ball nut 14 matched with the ball screw 16 . There is a thrust bearing 15 at the end of the ball nut. The thrust bearing 15 is integrated with the cylinder housing 12 . A rod 17 is fixed on the ball nut 14 . In the electric cylinder, the ball screw 16 is rotated by the rotational drive of the rotating shaft 11A of the electric motor 11 , and the linear motion of the ball nut is generated by this screw mechanism. Therefore, the rod 17 fixed on the ball nut 14 reciprocates back and forth.
然而，当电动汽缸与油缸和气缸具有相同的冲程时，上述电动汽缸的纵向尺寸势必比后者大。因此，电动汽缸与油缸和气缸相比的一个缺点是：由于其较大的纵向尺寸，在油缸和气缸可应用的地方可能就不能用电动汽缸。However, when the electric cylinder has the same stroke as the oil cylinder and the air cylinder, the longitudinal dimension of the above-mentioned electric cylinder is bound to be larger than the latter. Therefore, a disadvantage of electric cylinders compared with oil and air cylinders is that, due to their larger longitudinal dimensions, electric cylinders may not be used where oil and air cylinders are applicable.
发明公开invention disclosure
本发明将解决上述问题。其目的是提供一个新颖结构的电动汽缸，其纵向尺寸小于具同样冲程的常规电动汽缸。The present invention will solve the above-mentioned problems. Its purpose is to provide an electric cylinder of novel structure whose longitudinal dimension is smaller than that of a conventional electric cylinder with the same stroke.
为了达到上述目的，本发明的电动汽缸包括：一个电马达，一个通过传动元件与电马达连接的滚珠螺母，它转动支承在绕其周边放置的止推轴承上，以及一个与滚珠螺母相配合的滚珠丝杆，滚珠丝杆一端伸到汽缸壳体外面。In order to achieve the above object, the electric cylinder of the present invention includes: an electric motor, a ball nut connected with the electric motor through a transmission element, which is rotatably supported on a thrust bearing placed around its periphery, and a ball nut matched with the ball nut Ball screw, one end of the ball screw extends out of the cylinder housing.
附图概述Figure overview
图1是一个垂直剖面，表示本发明一个实施例的主要部分，Fig. 1 is a vertical section, represents the main part of an embodiment of the present invention,
图2是一个垂直剖面，表示先有技术的电动汽缸。Figure 2 is a vertical section showing a prior art electric cylinder.
实施本发明的方式Modes of Carrying Out the Invention
现参照图1来详细说明本发明的一个优选实施例。电马达1装在汽缸壳体2的外面。电马达1的轴1A伸入汽缸壳体内。通过传动元件3，轴1A与滚珠螺母4连接。固定安装在汽缸壳体2上的止推轴承5放置在滚珠螺母4的周边，因而转动支承着滚珠螺母4。滚珠螺母4与滚珠丝杆4相配合，滚珠丝杆6的一端自汽缸壳体2伸出。一个端部零件7固定在伸出滚珠丝杆6的一端，同时一个导向件8和一个滑动轴承9固定在其另一端。一对防尘的波纹管10放置得使其内外端分别与滚珠丝杆6入口处的汽缸壳体2和端部零件7相连接。Referring now to FIG. 1, a preferred embodiment of the present invention will be described in detail. The electric motor 1 is mounted outside the cylinder housing 2 . The shaft 1A of the electric motor 1 protrudes into the cylinder housing. The shaft 1A is connected to the ball nut 4 via the transmission element 3 . A thrust bearing 5 fixedly mounted on the cylinder housing 2 is placed on the periphery of the ball nut 4 so as to rotatably support the ball nut 4 . The ball nut 4 cooperates with the ball screw 4 , and one end of the ball screw 6 protrudes from the cylinder housing 2 . An end piece 7 is fixed at one end protruding from the ball screw 6, while a guide 8 and a sliding bearing 9 are fixed at the other end thereof. A pair of dust-proof bellows 10 is placed such that its inner and outer ends are connected to the cylinder housing 2 at the inlet of the ball screw 6 and the end piece 7, respectively.
现说明上述电动汽缸的实际工作情况。通过传动元件3，把电马达1的轴1A的转动驱动传到滚珠螺母4，从而使滚珠螺母4转动。该转动螺母机构使得与滚珠螺母4相配合的滚珠丝杆6作线性运动。因为滚珠丝杆的一端伸出汽缸壳体2，并且有一个端部零件7固定在这端部，滚珠丝杆的作用如杆子一样，相应于电马达1的转动方向作前后运动。一对波纹管10相应于端部零件7的运动而伸开或缩回，从而防止灰尘吸附到滚珠丝杆6上。The actual working conditions of the above-mentioned electric cylinder are now described. Through the transmission element 3, the rotational drive of the shaft 1A of the electric motor 1 is transmitted to the ball nut 4, so that the ball nut 4 rotates. The rotating nut mechanism makes the ball screw 6 matched with the ball nut 4 perform linear motion. Because one end of the ball screw sticks out of the cylinder housing 2, and an end part 7 is fixed on this end, the ball screw acts as a rod and moves back and forth corresponding to the direction of rotation of the electric motor 1. A pair of bellows 10 is extended or retracted corresponding to the movement of the end part 7, thereby preventing dust from being adsorbed to the ball screw 6.
发明效果Invention effect
从上述说明已清楚看到，在本发明的电动汽缸中，止推轴承放置在滚珠螺母的周边，由电马达转动的滚珠螺母使滚珠丝杆作线性运动，因而滚珠丝杆的作用如在常规汽缸中的杆子一样，可把物体推出。所以，可省掉常规汽缸中在滚珠丝杆端放止推轴承的空间，由此可缩短其纵向尺寸。因而本发明的电动汽缸甚至可放置在常规汽缸无法容纳的空间中。It is clear from the above description that in the electric cylinder of the present invention, the thrust bearing is placed on the periphery of the ball nut, and the ball screw rotated by the electric motor makes the ball screw move linearly, so the ball screw acts as in the conventional Like the rod in the cylinder, the object can be pushed out. Therefore, the space for placing the thrust bearing at the end of the ball screw in the conventional cylinder can be saved, whereby its longitudinal dimension can be shortened. Thus the electric cylinder of the present invention can be placed even in spaces that cannot be accommodated by conventional cylinders.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97190392A CN1189254A (en) | 1996-04-19 | 1997-04-15 | electric cylinder |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP122499/96 | 1996-04-19 | ||
| CN97190392A CN1189254A (en) | 1996-04-19 | 1997-04-15 | electric cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1189254A true CN1189254A (en) | 1998-07-29 |
Family
ID=5178726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97190392A Pending CN1189254A (en) | 1996-04-19 | 1997-04-15 | electric cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1189254A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155523A (en) * | 2009-12-14 | 2011-08-17 | 哈米尔顿森德斯特兰德公司 | Torque reacting bellows seal for linear actuator |
| WO2012096390A1 (en) | 2011-01-13 | 2012-07-19 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| WO2013038729A1 (en) | 2011-09-14 | 2013-03-21 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| CN104505978A (en) * | 2014-04-29 | 2015-04-08 | 西北工业大学 | Linear actuator for nut-driving planetary roller screw assembly |
| CN105347086A (en) * | 2015-12-14 | 2016-02-24 | 重庆东登科技有限公司 | Photoelectric corrective mechanism adopting rust-proof electric cylinder for coil slitting machine |
| CN107505111A (en) * | 2017-08-29 | 2017-12-22 | 大连理工大学 | Marine environment adaptability test device for large-tonnage FLNG shipboard compressor model |
-
1997
- 1997-04-15 CN CN97190392A patent/CN1189254A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155523A (en) * | 2009-12-14 | 2011-08-17 | 哈米尔顿森德斯特兰德公司 | Torque reacting bellows seal for linear actuator |
| WO2012096390A1 (en) | 2011-01-13 | 2012-07-19 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| WO2013038729A1 (en) | 2011-09-14 | 2013-03-21 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| DE202012013094U1 (en) | 2011-09-14 | 2014-10-28 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| US9614418B2 (en) | 2011-09-14 | 2017-04-04 | Sintokogio, Ltd. | Electric cylinder and electric cylinder system |
| CN104505978A (en) * | 2014-04-29 | 2015-04-08 | 西北工业大学 | Linear actuator for nut-driving planetary roller screw assembly |
| CN105347086A (en) * | 2015-12-14 | 2016-02-24 | 重庆东登科技有限公司 | Photoelectric corrective mechanism adopting rust-proof electric cylinder for coil slitting machine |
| CN107505111A (en) * | 2017-08-29 | 2017-12-22 | 大连理工大学 | Marine environment adaptability test device for large-tonnage FLNG shipboard compressor model |
| CN107505111B (en) * | 2017-08-29 | 2019-07-16 | 大连理工大学 | Marine environment adaptability test device for large tonnage FLNG shipboard compressor model |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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