CN103301582A - Treatment bed rotating transmission device for large medical device - Google Patents
Treatment bed rotating transmission device for large medical device Download PDFInfo
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- CN103301582A CN103301582A CN2013102802765A CN201310280276A CN103301582A CN 103301582 A CN103301582 A CN 103301582A CN 2013102802765 A CN2013102802765 A CN 2013102802765A CN 201310280276 A CN201310280276 A CN 201310280276A CN 103301582 A CN103301582 A CN 103301582A
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- actuating device
- therapeutic bed
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Abstract
The invention relates to a treatment bed rotating transmission device, in particular to a treatment bed rotating transmission device used for a large medical device. The transmission device has high location accuracy and a self-locking function. The treatment bed rotating transmission device comprises a base, a transmission device and a support device. The transmission device comprises a worm wheel and a worm, the worm wheel is fixed on the base, the worm is meshed with the worm wheel and is arranged on a box, one end of the worm is connected with a speed reducer, the speed reducer is connected with a servo motor, the inner side of the worm wheel is connected with a center shaft through a second rolling bearing, the center shaft is fixedly connected with the box, and the support device is fixed on the box. The treatment bed rotating transmission device is provided with a servo system having a quick response capability and has high treatment bed rotating angle control precision, and data are read accurately; the transmission device performs back clearance elimination treatment and has a self-locking function, motor damage is avoided, a treatment bed runs stably, and safety is high.
Description
Technical field
The present invention relates to a kind of therapeutic bed revolution actuating device, particularly relate to a kind ofly for high position precision, with the therapeutic bed revolution actuating device of the large medical equipment of auto-lock function, belong to the armarium technical field.
Background technology
Large-scale armarium, such as oncotherapy and diagnostic devices such as medical electronic linear accelerator, radiotherapy simulators, at present its therapeutic bed revolution drives as the motor-driven roller centers on central shaft rotates, and central shaft connects by thrust ball bearing with flat seat, the drive disk assembly of therapeutic bed is not eliminated back clearance and is processed, the positioning accuracy of therapeutic bed and repetitive positioning accuracy are not high, and flutter phenomenon appears in therapeutic bed in operation process, and then have influence on the treatment precision.Therapeutic bed revolution output unit is by gear drive amount of spin to be passed to potentiometer, and gear is not eliminated back clearance and processed, and affect the accuracy that the potentiometer data read, and the revolution position only depends on single potentiometer detection, and reliability is not strong.Secondly existing driving device relies on motor, single-cylinder is braked and stop, the self-locking device that does not have other, braking and stopping effect are bad, and when electrical power, if therapeutic bed revolution resistance is large or artificial reverse exerting oneself, be easy to cause the damage of motor.
Patent No. CN201223513Y discloses a kind of revolution foundation of therapeutic bed, its base is provided with circular slideway, is fitted with a body link on the central shaft of circular slideway, and roller and circular slideway on the bed body link adapt, roller shaft connects motor shaft, the equipped brake cylinder of corresponding bed body link.This patented technology has improved therapeutic bed revolution precision to a certain extent, but its deficiency is: its overall structure defines the lifting of therapeutic bed revolution precision, can not satisfy more high-precision requirement.
Summary of the invention
According to above deficiency of the prior art, the technical problem to be solved in the present invention is: a kind of large medical equipment therapeutic bed revolution actuating device is provided, solves therapeutic bed positioning accuracy and the not high problem of repetitive positioning accuracy, improve the treatment precision.
Large medical equipment therapeutic bed revolution actuating device of the present invention, comprise base, actuating device, bracing or strutting arrangement, actuating device comprises worm gear, worm screw, worm gear is fixed on the base, the worm and wheel engagement, and worm screw is arranged on the casing, worm screw one end connection reducer, decelerator connects servomotor, and worm gear is inboard to connect central shaft by rolling bearing two, and central shaft is fixedly connected with casing; Bracing or strutting arrangement is fixed on the casing.
Casing is arranged on the top of base, and therapeutic bed is arranged on the bracing or strutting arrangement, and worm gear core wheel and worm rim maintain static, servomotor drives the worm screw rotation by decelerator, and worm screw is rotated around worm gear wheel mandrel, and worm screw drives casing, casing drives central shaft and rotates, and bracing or strutting arrangement rotates with casing.Worm screw, worm rim cooperation have auto-lock function and better rotation precision, eliminate back clearance and process, and have improved therapeutic bed positioning accuracy and reorientation precision, and avoid only relying on motor directly braking and stop, prevent that motor from damaging, therapeutic bed revolution process is steady, avoids vibration.
The worm screw two ends radially are connected with casing by rolling bearing one, and worm shaft is to arranging thrust bearing, and the realization worm screw is rotated around himself, and the drive casing rotates around the worm gear core wheel.
Described rolling bearing one, rolling bearing two are taper roll bearing.
Described bracing or strutting arrangement comprises tripod, support wheel is set on the tripod is connected with base, and bracing or strutting arrangement arranges two groups of pneumatic units, and pneumatic unit is arranged on the tripod both sides.Pneumatic unit is by realizing the therapeutic bed stopping effect with the base effect, and pneumatic unit increases to two groups, guarantees stopping effect.
On the described casing synchronous pulley is set, potentiometer is set on the base, potentiometer is connected by Timing Belt with synchronous pulley.
Described synchronous pulley and spigot shaft coaxle.
Described Timing Belt is belt or cog belt, preferential cog belt.
Make the revolution angle synchronous transfer of therapeutic bed arrive potentiometer by Timing Belt is set, adopt the phenomenons such as cog belt can not skid, cog belt is eliminated back clearance and is processed, and the potentiometer image data is accurate, is convenient to angle control.
Described servomotor is provided with rotary encoder and brake.Position detecting device in the servosystem is comprised of rotary encoder and the potentiometer of servomotor, rotary encoder is set the anglec of rotation, and potentiometer detects the anglec of rotation and feeds back, and controls by bilayer, greatly improve positioning accuracy and the repetitive positioning accuracy of therapeutic bed, improve therapeutic effect.
Described worm gear comprises the worm gear core wheel, and worm gear core wheel outer rim is worm rim fixedly, and worm rim and worm engaging during the engaging tooth wearing and tearing, only need be changed worm rim and get final product, and easy accessibility is saved cost.
The beneficial effect that the present invention compared with prior art has is:
The present invention has the servosystem of capability of fast response, and the control of high-precision therapeutic bed revolution angle, data read accurately; Drive mechanism is eliminated the processing of back clearance, has auto-lock function, prevents that motor from damaging, and therapeutic bed is stable, and safety is good; Two pneumatic stop, the stop degree of accuracy is high, effective; The positioning accuracy of therapeutic bed, repetitive positioning accuracy, safety, stability, reliability have qualitative leap, and accuracy and the safety for the treatment of are greatly improved.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is that Fig. 1 master looks cutaway view;
Fig. 3 is the actuating device partial sectional view;
Fig. 4 is Fig. 3 A-A cross-sectional view;
Fig. 5 is bracing or strutting arrangement assembling schematic diagram;
Fig. 6 is Fig. 5 B-B cross-sectional view.
Among the figure: 1, base; 2, mechanical stop; 3, Timing Belt; 4, actuating device; 5, bracing or strutting arrangement; 6, potentiometer; 7, bearing gland; 8, rolling bearing one; 9, worm screw; 10, motor flange; 11, decelerator; 12, servomotor; 13, casing; 14, worm gear core wheel; 15, central shaft; 16, rolling bearing two; 17, synchronous pulley; 18, worm rim; 19, inner support plate; 20, external support board; 21, pole; 22, tripod; 23, support wheel; 24, pneumatic unit.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described further:
Shown in Fig. 1～4, the embodiment of the invention comprises base 1, actuating device 4, actuating device 4 comprises worm gear core wheel 14, worm screw 9, worm gear core wheel 14 bottoms are bolted on the base 1, worm gear core wheel 14 top outer rims are bolted worm rim 18, worm screw 9 middle parts are connected with worm rim 18, worm screw 9 is eliminated back clearance with worm rim 18 connecting portions and processes, worm screw 9 two ends radially are connected with casing 13 by rolling bearing 1, worm screw 9 axially arranges an end thrust bearing is set, bearing arranged outside bearing gland 7, worm screw 9 other end connection reducers 11, decelerator 11 connects servomotor 12, decelerator 11, servomotor 12 is fixed on the casing by motor flange, and worm gear core wheel 14 is inboard by rolling bearing 2 16 connection central shafts 15, central shaft 15 is fixedly connected with casing 13, casing 13 is positioned at base 1 top, can be around central shaft 15 rotations, rolling bearing 1, rolling bearing 2 16 is taper roll bearing; With the central shaft 15 coaxial synchronous pulleys 17 that arrange, potentiometer 6 is set on the base 1 on the casing 13, potentiometer 6 is connected by tooth form synchronous belt 3 with synchronous pulley 17, and tooth form synchronous belt 3 is eliminated back clearance and processed; Servomotor 12 is provided with rotary encoder and brake, the position detecting device that rotary encoder and potentiometer 6 form in the servosystem; Bracing or strutting arrangement 5 is fixed on the casing 13, and the position corresponding with casing 13 arranges mechanical stop 2, and mechanical stop 2 is fixed on the base 1, and when placing actuating device 4 and losing efficacy, bracing or strutting arrangement 5 anglecs of rotation are excessive, damage equipment.
Shown in Fig. 5～6, bracing or strutting arrangement 5 comprises tripod 22, support wheel 23 is set on the tripod 22 is connected with base 1, therapeutic bed is installed on the tripod 22, bracing or strutting arrangement 5 arranges two groups of pneumatic units 24, and pneumatic unit 24 is arranged on tripod 22 both sides, plays the stop effect; Inner support plate 19, external support board 20 are set on the opposite side base 1 of tripod 22 correspondences, and inner support plate 19, external support board 20 connect by pole 21, make things convenient for personnel to stand.
During work, by rotary encoder input servomotor 12 anglecs of rotation, servomotor 12 drives worm screw 9 by decelerator 11 and rotates, worm screw 9 is around 14 rotations of worm gear core wheel, drive casing 13 and central shaft 15 rotations, casing 13 drives bracing or strutting arrangement 5 and therapeutic bed rotation, synchronous pulley 17 on the casing 13 is transferred to potentiometer 6 by Timing Belt 3 with rotational angle, potentiometer 6 arrives servosystem with data feedback, servosystem is regulated synchronously, arrive the exact position after repeatedly regulating, two groups of pneumatic units 24 move simultaneously and carry out stop, realize the accurate location of therapeutic bed.
Claims (9)
1. large medical equipment therapeutic bed revolution actuating device, comprise base (1), actuating device (4), bracing or strutting arrangement (5), it is characterized in that: actuating device (4) comprises worm gear, worm screw (9), worm gear is fixed on the base (1), worm screw (9) and worm gear engagement, worm screw (9) is arranged on the casing (13), worm screw (9) one end connection reducers (11), decelerator (11) connects servomotor (12), worm gear is inboard to connect central shaft (15) by rolling bearing two (16), and central shaft (15) is fixedly connected with casing (13); Bracing or strutting arrangement (5) is fixed on the casing (13).
2. large medical equipment therapeutic bed according to claim 1 revolution actuating device, it is characterized in that: worm screw (9) two ends radially are connected with casing (13) by rolling bearing one (8), and worm screw (9) axially arranges thrust bearing.
3. large medical equipment therapeutic bed according to claim 2 revolution actuating device, it is characterized in that: described rolling bearing one (8), rolling bearing two (16) are taper roll bearing.
4. large medical equipment therapeutic bed according to claim 1 revolution actuating device, it is characterized in that: described bracing or strutting arrangement (5) comprises tripod (22), support wheel (23) is set on the tripod (22) to be connected with base (1), bracing or strutting arrangement (5) arranges two groups of pneumatic units (24), and pneumatic unit (24) is arranged on tripod (22) both sides.
5. large medical equipment therapeutic bed according to claim 1 revolution actuating device, it is characterized in that: synchronous pulley (17) is set on the described casing (13), potentiometer (6) is set on the base (1), and potentiometer (6) is connected by Timing Belt (3) with synchronous pulley (17).
6. large medical equipment therapeutic bed according to claim 4 revolution actuating device, it is characterized in that: described synchronous pulley (17) is coaxial with central shaft (15).
7. large medical equipment therapeutic bed according to claim 4 revolution actuating device, it is characterized in that: described Timing Belt (17) is belt or cog belt.
8. large medical equipment therapeutic bed according to claim 1 revolution actuating device, it is characterized in that: described servomotor (12) is provided with rotary encoder and brake.
9. large medical equipment therapeutic bed according to claim 1 revolution actuating device, it is characterized in that: described worm gear comprises worm gear core wheel (14), worm gear core wheel (14) outer rim is worm rim (18) fixedly, worm rim (18) and worm screw (9) engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310280276.5A CN103301582B (en) | 2013-06-21 | 2013-06-21 | Large medical equipment therapeutic bed revolution actuating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310280276.5A CN103301582B (en) | 2013-06-21 | 2013-06-21 | Large medical equipment therapeutic bed revolution actuating device |
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| CN103301582A true CN103301582A (en) | 2013-09-18 |
| CN103301582B CN103301582B (en) | 2015-12-16 |
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| CN201310280276.5A Active CN103301582B (en) | 2013-06-21 | 2013-06-21 | Large medical equipment therapeutic bed revolution actuating device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966928A (en) * | 2017-11-21 | 2018-04-27 | 上海联影医疗科技有限公司 | Back clearance error compensating method, device, system, computer equipment and radiotherapy equipment |
| CN109008394A (en) * | 2018-09-12 | 2018-12-18 | 济宁市兖州区阅木家具有限公司 | A kind of bedroom bed of intelligence adjustable-angle |
| CN109745633A (en) * | 2018-12-25 | 2019-05-14 | 江苏海明医疗器械有限公司 | A kind of medical accelerator therapeutic bed track pedestal |
| CN111643236A (en) * | 2020-06-15 | 2020-09-11 | 闫爱玲 | Heart stent conveying and releasing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1861218A (en) * | 2006-06-08 | 2006-11-15 | 山东新华医疗器械股份有限公司 | Radio-simulator collimator collimation line movement mechanism |
| CN201316366Y (en) * | 2008-11-18 | 2009-09-30 | 山东新华医疗器械股份有限公司 | Novel swinging base of treatment table |
| CN203303518U (en) * | 2013-06-21 | 2013-11-27 | 山东新华医疗器械股份有限公司 | Treatment bed revolution transmission device of large-scale medical equipment |
-
2013
- 2013-06-21 CN CN201310280276.5A patent/CN103301582B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1861218A (en) * | 2006-06-08 | 2006-11-15 | 山东新华医疗器械股份有限公司 | Radio-simulator collimator collimation line movement mechanism |
| CN201316366Y (en) * | 2008-11-18 | 2009-09-30 | 山东新华医疗器械股份有限公司 | Novel swinging base of treatment table |
| CN203303518U (en) * | 2013-06-21 | 2013-11-27 | 山东新华医疗器械股份有限公司 | Treatment bed revolution transmission device of large-scale medical equipment |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966928A (en) * | 2017-11-21 | 2018-04-27 | 上海联影医疗科技有限公司 | Back clearance error compensating method, device, system, computer equipment and radiotherapy equipment |
| US10814145B2 (en) | 2017-11-21 | 2020-10-27 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for correcting a position error of a motion terminal |
| US10960227B2 (en) | 2017-11-21 | 2021-03-30 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for correcting a position error of a motion terminal |
| CN109008394A (en) * | 2018-09-12 | 2018-12-18 | 济宁市兖州区阅木家具有限公司 | A kind of bedroom bed of intelligence adjustable-angle |
| CN109745633A (en) * | 2018-12-25 | 2019-05-14 | 江苏海明医疗器械有限公司 | A kind of medical accelerator therapeutic bed track pedestal |
| CN111643236A (en) * | 2020-06-15 | 2020-09-11 | 闫爱玲 | Heart stent conveying and releasing device |
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| CN103301582B (en) | 2015-12-16 |
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