阅读说明：本技术 一种基于行星滚柱丝杠的罐门开启装置 (Tank door opening device based on planetary roller screw ) 是由 解志杰 尹继辉 于迪 詹长书 吕景亮 于 2021-01-25 设计创作，主要内容包括：本发明提供了一种基于行星滚柱丝杠的罐门开启装置,包括伺服电机、行星齿轮减速器、联轴器、行星滚柱丝杠、长连接件和罐门总成,行星滚柱丝杠包括丝杆轴、两个滚柱保持架、多个滚柱和螺母,滚柱同时与丝杆轴和螺母螺纹啮合,罐门总成包括罐门、连接杆和第一支座,罐门与罐体顶部配合,长连接件与螺母固定连接,在连接杆靠近自由端处通过活动铰链与第一支座铰接；伺服电机带动行星齿轮减速器转动,行星齿轮减速器通过联轴器带动丝杆轴转动,丝杆轴带动滚柱运动,滚柱带动螺母向下或向上移动进而带动罐门总成运动,打开或关闭罐门。本发明结构合理,开启关闭灵活,密封性能好,操作简便省力,确保罐门打开和关闭的可靠性,提高工作效率,降低成本。(The invention provides a tank door opening device based on a planetary roller screw, which comprises a servo motor, a planetary gear reducer, a coupler, the planetary roller screw, a long connecting piece and a tank door assembly, wherein the planetary roller screw comprises a screw rod shaft, two roller retainers, a plurality of rollers and nuts, the rollers are simultaneously in threaded engagement with the screw rod shaft and the nuts, the tank door assembly comprises a tank door, a connecting rod and a first support, the tank door is matched with the top of a tank body, the long connecting piece is fixedly connected with the nuts, and the connecting rod is hinged with the first support through a movable hinge at the position close to the free end; the servo motor drives the planetary gear reducer to rotate, the planetary gear reducer drives the screw rod shaft to rotate through the coupler, the screw rod shaft drives the roller to move, and the roller drives the nut to move downwards or upwards so as to drive the tank door assembly to move, so that the tank door is opened or closed. The invention has reasonable structure, flexible opening and closing, good sealing performance, simple and labor-saving operation, ensures the reliability of opening and closing the tank door, improves the working efficiency and reduces the cost.)

1. The utility model provides a jar door opening device based on planet roller lead screw which characterized in that: the novel energy-saving tank comprises a servo motor (1), a planetary gear reducer (2), a coupler (4), a planetary roller screw (6), a long connecting piece (7) and a tank door assembly (9), wherein the servo motor (1), the planetary gear reducer (2), the coupler (4), the planetary roller screw (6) and the long connecting piece (7) are sequentially arranged on one side of a tank body (10) from bottom to top, the planetary roller screw (6) comprises a screw rod shaft (11), two roller holders (12), a plurality of rollers (14) and a nut (13), the screw rod shaft (11) is arranged in the nut (13) and the axes of the screw rod shaft are overlapped, the plurality of rollers (14) are uniformly arranged between the screw rod shaft (11) and the nut (13) along the circumferential direction, the two roller holders (12) are respectively arranged at two ends of the nut (13), optical axes of two ends of the rollers (14) are respectively and rotatably connected with inner holes of the roller holders (12) at two ends of the nut (13), the roller (14) is simultaneously in threaded engagement with the screw shaft (11) and the nut (13), the tank door assembly (9) comprises a tank door (16), a connecting rod (17) and a first support (18), the tank door (16) is matched with the top of the tank body (10), one end of the connecting rod (17) is fixed on the tank door (16), the other end of the connecting rod is a free end, the first support (18) is fixed on the outer wall of the upper part of the tank body (10), the free end of the connecting rod (17) is hinged with the long connecting piece (7), the long connecting piece (7) is fixedly connected with the nut (13), and the connecting rod (17) is hinged with the first support (18) through a movable hinge (8) at the position close to the free end; the servo motor (1) drives the planetary gear reducer (2) to rotate, the planetary gear reducer (2) drives the screw rod shaft (11) to rotate through the coupler (4), the screw rod shaft (11) drives the roller (14) to perform planetary motion, the roller (14) drives the nut (13) to move, and the nut (13) moves downwards or upwards to drive the tank door assembly (9) to move so as to open or close the tank door.

2. A planetary roller screw based can door opening device according to claim 1, characterized in that: the nut (13) comprises a hollow shaft (19) with an internal thread and a connecting disc (20), the hollow shaft (19) with the internal thread and the connecting disc (20) are integrally manufactured, the connecting disc (20) is sleeved in the middle of the hollow shaft (19) with the internal thread, two ends of the hollow shaft (19) with the internal thread are respectively provided with a limiting step (21), the limiting steps (21) limit the axial movement of the corresponding roller retainer, and a plurality of connecting holes are uniformly formed in the connecting disc (21).

3. A planetary roller screw based can door opening device according to claim 2, characterized in that: the long connecting piece (7) comprises a sleeve (22), an upper connecting seat (23) and a lower connecting flange plate (24), the upper connecting seat (23) is fixed to the upper portion of the sleeve (22) and hinged to a hinged seat at the bottom of the free end of the connecting rod (17) through a pin shaft, the lower connecting flange plate (24) is connected with a connecting hole in the connecting plate (20) through a screw, and the free end of the screw rod shaft (11) extends into the sleeve (22).

4. A planetary roller screw based can door opening device according to claim 1, characterized in that: the planetary gear reducer (2) is installed on the reducer mounting plate (3), the reducer mounting plate (3) is fixed on the second support (25), and the second support (25) is arranged on the outer wall of the middle part of the tank body (10).

5. A planetary roller screw based can door opening device according to claim 1, characterized in that: a foldable dust cover (5) is sleeved on the screw rod shaft part between the nut (13) and the coupling (4).

6. A planetary roller screw based can door opening device according to claim 1, characterized in that: one end of the movable hinge (8) is connected with the double-lug seat fixed on the connecting rod (17) through a pin shaft, and the other end of the movable hinge (8) is connected with the double-lug seat fixed on the first support (18) through a pin shaft.

7. A planetary roller screw based can door opening device according to claim 1, characterized in that: the number of the rollers (14) is 6-12.

8. A planetary roller screw based can door opening device according to claim 1, characterized in that: the planetary gear reducer (2) is connected with the reducer mounting plate (3) through a flange plate.

9. A planetary roller screw based can door opening device according to any of claims 1-8, characterized in that: the screw shaft (11) and the nut (13) are provided with multiple threads, the number of the threads is equal, and the threads on the roller (14) are single threads.

Technical Field

The invention belongs to the technical field of automatic control of valves, and particularly relates to a tank door opening device based on a planetary roller screw.

Background

The existing pressure containers such as vulcanizing tanks, still kettles, autoclave tanks and the like need to have good sealing performance, and the tank doors are generally connected with the tank body by hinges or by a suspension arm connecting rod device connected with the upper part of the tank body. The tank door has the disadvantages that when the diameter of the equipment is larger, the weight of the tank door is very large, the tank door is harder to open and close, and some equipment with larger diameter undoubtedly needs larger strength when the tank door is rotated, so that the tank door is difficult to open and close, the sealing performance of the tank door is even affected, the shape is difficult to correct, and the tank door of the pressure container is quite troublesome to how to open quickly. The existing pressure container tank door opening methods include four types as follows: 1. and (3) manually opening the door: the opening and closing of the quick-opening door are simply and quickly implemented by the direct operation of a handle; 2. and (3) pneumatic door opening: the control button is operated, and the cylinder is controlled to stretch and retract to automatically open and close the quick opening door, so that time and labor are saved; 3. hydraulic door opening: the control button is operated, and the hydraulic cylinder is controlled to stretch and retract to realize the automatic opening and closing of the tank door; 4. electric door opening: the control button is operated, and the motor and the turbine worm control the speed reduction to realize the opening and closing of the tank door.

The tank door of large equipment is heavier, and larger manual force is needed for manually opening the tank door; the pneumatic door opening and the hydraulic door opening both need special power sources, are very inconvenient and increase the cost; the worm gear and worm drive is the face contact in the electronic opening door of motor and turbine worm control speed reduction, and frictional force is big for the part is easy wearing and tearing, and transmission efficiency is low, also can't satisfy the production demand.

Disclosure of Invention

In view of the above, the invention aims to provide a tank door opening device based on a planetary roller screw, which has the advantages of reasonable structure, flexibility in opening and closing, good sealing performance, simplicity and convenience in operation, labor saving, reliability in opening and closing of a tank door, improvement of working efficiency and reduction of cost.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a tank door opening device based on a planetary roller screw comprises a servo motor, a planetary gear reducer, a coupler, a planetary roller screw, a long connecting piece and a tank door assembly, wherein the servo motor, the planetary gear reducer, the coupler, the planetary roller screw and the long connecting piece are sequentially arranged on one side of a tank body from bottom to top, the planetary roller screw comprises a screw rod shaft, two roller holders, a plurality of rollers and a nut, the screw rod shaft is arranged in the nut, the axes of the screw rod shaft are overlapped, the rollers are uniformly arranged between the screw rod shaft and the nut along the circumferential direction, the two roller holders are respectively arranged at two ends of the nut, optical axes at two ends of the rollers are respectively rotatably connected with inner holes of the roller holders at two ends of the nut, the rollers are simultaneously in threaded engagement with the screw rod shaft and the nut, the tank door assembly comprises a tank door, a connecting rod and a first support, and the tank door is matched with the, one end of the connecting rod is fixed on the tank door, the other end of the connecting rod is a free end, the first support is fixed on the outer wall of the upper part of the tank body, the free end of the connecting rod is hinged with the long connecting piece, the long connecting piece is fixedly connected with the nut, and the position, close to the free end, of the connecting rod is hinged with the first support through a movable hinge; the servo motor drives the planetary gear reducer to rotate, the planetary gear reducer drives the screw rod shaft to rotate through the coupler, the screw rod shaft drives the roller to perform planetary motion, the roller drives the nut to move, and the nut moves downwards or upwards to drive the tank door assembly to move and open or close the tank door.

Furthermore, the nut comprises a hollow shaft with an internal thread and a connecting disc which are integrally manufactured, the connecting disc is sleeved in the middle of the hollow shaft with the internal thread, two ends of the hollow shaft with the internal thread are respectively provided with a limiting step, the limiting steps limit the axial movement of the corresponding roller retainer, and the connecting disc is uniformly provided with a plurality of connecting holes.

Furthermore, the long connecting piece comprises a sleeve, an upper connecting seat and a lower connecting flange plate, the upper connecting seat is fixed on the upper portion of the sleeve and is hinged to a hinge seat at the bottom of the free end of the connecting rod through a pin shaft, the lower connecting flange plate is connected with a connecting hole in the connecting plate through a screw, and the free end of the screw shaft extends into the sleeve.

Further, planetary gear reducer installs on the reduction gear mounting panel, the reduction gear mounting panel is fixed on the second support, the second support sets up on the middle part outer wall of jar body.

Furthermore, a foldable dust cover is sleeved on the screw rod shaft part between the nut and the coupler.

Furthermore, one end of the movable hinge is connected with the double-lug seat fixed on the connecting rod through a pin shaft, and the other end of the movable hinge is connected with the double-lug seat fixed on the first support through a pin shaft.

Furthermore, the number of the rollers is 6-12.

Furthermore, the planetary gear reducer is connected with the reducer mounting plate through a flange plate.

Furthermore, the screw threads on the screw shaft and the nut are multi-start threads, the number of the screw threads is equal, and the screw threads on the roller are single-start threads.

Compared with the prior art, the tank door opening device based on the planetary roller screw has the following advantages:

this application adopts planet roller screw drive, and the during operation, motor output shaft install at planetary gear reducer's input, and the reduction gear output passes through the shaft coupling with torque transfer for the lead screw axle to drive the roller and carry out the planetary motion, the roller motion drives the nut rotatory, under the restriction of activity hinge, and then drives jar door assembly motion, opens or closes jar door. Compared with the traditional worm gear reducer, the worm gear reducer has more thread contact points, greatly improves rated dynamic load and static load, and has the advantages of stable transmission, quick response, high efficiency, long service life and strong impact resistance.

This application adopts the hinge design through opening mechanism, and planetary gear reducer mounting means is mounting panel flange joint, has played driven stationarity of planet roller lead screw and accuracy nature, need not under the guide of locating lever and guide way, and the accurate bed of finding has greatly improved jar door implantation rate of accuracy. Generally, the invention greatly improves the bearing capacity, transmission precision, transmission efficiency and transmission stability of the tank door opening device, and can effectively ensure the sealing property and safety of the equipment in the operation process.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is an overall structural view of a planetary roller screw-based can door opening device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a tank door opening device based on a planetary roller screw for closing a tank door according to an embodiment of the invention;

FIG. 3 is a schematic structural diagram of a tank door opening device based on a planetary roller screw according to an embodiment of the invention for opening a tank door;

FIG. 4 is a schematic structural diagram of a planetary gear reducer in a planetary roller screw-based can door opening device according to an embodiment of the invention;

FIG. 5 is a schematic structural diagram of a planetary roller screw of the tank door opening device based on the planetary roller screw according to the embodiment of the invention;

FIG. 6 is a schematic structural diagram of a screw rod in a tank door opening device based on a planetary roller screw according to an embodiment of the invention;

FIG. 7 is a schematic structural diagram of a nut in a planetary roller screw-based can door opening device according to an embodiment of the invention;

fig. 8 is a schematic structural diagram of rollers in a tank door opening device based on a planetary roller screw according to an embodiment of the invention.

Description of reference numerals:

1-servo motor, 2-planetary gear reducer, 3-reducer mounting plate, 4-coupler, 5-foldable dust cover, 6-planetary roller screw, 7-long connecting piece, 8-movable hinge, 9-tank door assembly, 10-tank body, 11-screw shaft, 12-roller retainer, 13-nut, 14-roller, 15-elastic retainer ring, 16-tank door, 17-connecting rod, 18-first support, 19-hollow shaft with internal thread, 20-connecting plate, 21-limiting step, 22-sleeve, 23-upper connecting seat, 24-lower connecting flange and 25-second support.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1-8, a can door opening device based on a planetary roller screw comprises a servo motor 1, a planetary gear reducer 2, a coupling 4, a planetary roller screw 6, a long connecting piece 7 and a can door assembly 9, wherein the servo motor 1, the planetary gear reducer 2, the coupling 4, the planetary roller screw 6 and the long connecting piece 7 are sequentially arranged on one side of a can body 10 from bottom to top, the planetary roller screw 6 comprises a screw shaft 11, two roller holders 12, a plurality of rollers 14 and a nut 13, the screw shaft 11 is arranged in the nut 13, the axes of the screw shaft 11 are overlapped, the plurality of rollers 14 are uniformly arranged between the screw shaft 11 and the nut 13 along the circumferential direction, the two roller holders 12 are respectively arranged at two ends of the nut 13, the optical axes of the two ends of the rollers 14 are respectively rotatably connected with the inner holes of the roller holders 12 at two ends of the nut 13, the rollers 14 are simultaneously in threaded engagement with the screw shaft 11 and the nut 13, the tank door assembly 9 comprises a tank door 16, a connecting rod 17 and a first support 18, the tank door 16 is matched with the top of the tank body 10, one end of the connecting rod 17 is fixed on the tank door 16, the other end of the connecting rod 17 is a free end, the first support 18 is fixed on the outer wall of the upper part of the tank body 10, the free end of the connecting rod 17 is hinged with the long connecting piece 7, the long connecting piece 7 is fixedly connected with a nut 13, the position, close to the free end, of the connecting rod 17 is hinged with the first support 18 through a movable hinge 8, specifically, one end of the movable hinge 8 is connected with a double-lug seat fixed on the connecting rod 17 through a pin shaft, and the other end of the movable hinge 8 is connected with the double-lug seat fixed on the first support 18 through a pin shaft; the servo motor 1 drives the planetary gear reducer 2 to rotate, and the planetary gear reducer 2 drives the screw rod shaft 11 to rotate through the coupler 4. The servo motor 1 is fixed at the input end of the planetary gear reducer 2, the planetary gear reducer 2 is fixed on the reducer mounting plate 3, the output end of the planetary gear reducer 2 is connected with a screw rod shaft in the planetary roller screw 6, torque output by the servo motor is transmitted to the screw rod shaft 11, the screw rod shaft 11 drives the rollers 14 to perform planetary motion, the rollers 14 drive the nuts 13 to move, the nuts 13 advance or retreat, and then the tank door assembly 9 is driven to move, and the tank door 16 is closed or opened.

The nut 13 comprises a hollow shaft 19 with an internal thread and a connecting disc 20 which are integrally manufactured, the connecting disc 20 is sleeved in the middle of the hollow shaft 19 with the internal thread, two ends of the hollow shaft 19 with the internal thread are respectively provided with a limiting step 21, the limiting steps 21 limit the axial movement of the corresponding roller retainer, and a plurality of connecting holes are uniformly formed in the connecting disc 21.

The long connecting piece 7 comprises a sleeve 22, an upper connecting seat 23 and a lower connecting flange 24, the upper connecting seat 23 is fixed on the upper portion of the sleeve 22 and is hinged with a hinged seat at the bottom of the free end of the connecting rod 17 through a pin shaft, the lower connecting flange 24 is connected with a connecting hole in the connecting disk 20 through a screw, the free end of the lead screw shaft 11 extends into the sleeve 22, the free end of the lead screw extends into the sleeve in clearance fit, and the sleeve plays a role in positioning the lead screw.

The planetary gear reducer 2 is arranged on the reducer mounting plate 3, and specifically, the planetary gear reducer 2 is connected with the reducer mounting plate 3 through a flange; the reducer mounting plate 3 is fixed on a second support 25, and the second support 25 is arranged on the outer wall of the middle part of the tank body 10.

A foldable dust cover 5 is sleeved on the screw shaft part between the nut 13 and the coupler 4 to protect the exposed part of the screw shaft 11.

The number of the rollers 14 is 6-12. The screw shaft 11 and the nut 13 are provided with multiple threads with the same number of thread heads, the threads on the rollers 14 are provided with single-head threads, and the optical axes at two ends of the rollers 14 are arranged in the roller retainer 12, so that the rollers 22 are uniformly distributed between the screw shaft 11 and the planetary roller screw nut 13. On the screw shaft 11, near the two roller holders 12, a circlip 15 is provided, which delimits the respective holders.

The working process of the application is as follows: an output shaft of the servo motor 1 drives the planetary gear reducer 2 to rotate, output torque is transmitted to the screw shaft 11 through the coupler, the screw shaft 11 rotates to drive the roller 14 to perform planetary motion, the roller 14 moves to drive the nut 13 to move, the nut 13 moves downwards or upwards under the limitation of the movable hinge 8, and then the long connecting piece 7 drives the tank door assembly 9 to rotate to open or close the tank door.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.