CN207532718U - Bidirectional swinging device - Google Patents

Abstract

The utility model provides a kind of Bidirectional swinging device, including pedestal, stent, swing span and two sets of swing haulage gears；Each haulage gear that swings includes rope, shaft, motor, two movable pulleys and two fixed pulleys, the stage casing of rope is wound in shaft, and the both ends of rope bypass movable pulley corresponding with each fixed pulley respectively around two fixed pulleys, again respectively and the both sides of pedestal are fixedly linked；Line of the line between another set of two fixed pulley centers for swinging haulage gear between a set of two fixed pulley centers for swinging haulage gear.The utility model is when a shaft rotates, one end of corresponding rope is tensed, so that the fixed pulley and movable pulley of end wrapping are close to each other, and loosens the other end of the rope, so that the fixed pulley of end wrapping is located remotely from each other with movable pulley, and then realizes and swing span is pulled to be swung on stent；And swung by two sets of traction swing mechanisms to realize swing span along in orthogonal both direction, control is simple, at low cost.

Description

Bidirectional swinging device

Technical field

The utility model belongs to field of medical device, is to be related to a kind of Bidirectional swinging device more specifically.

Background technology

Centered on head part, vertical plane in the front-back direction is commonly referred to as sagittal plane, and the vertical plane of left and right directions is commonly referred to as For coronal-plane.In balance rehabilitation training, often personnel are shaken, with body shape of the tester during shaking Condition；When tester shakes, mostly can testers in being swayed forwards and backwards in sagittal plane and in double swerve on coronal-plane, this is just needed Use Bidirectional swinging device.And during due to balance rehabilitation training, need the angle shaken according to control, thus current two-way pendulum Dynamic device is usually the surrounding that pedal is supported using vertical spindle gear, is controlled by the cooperation of each spindle gear The left and right of personnel processed and the angle of inclination of swing, control is complicated, and of high cost.

Utility model content

The purpose of this utility model is to provide a kind of Bidirectional swinging device, to solve two-way pendulum in the prior art The problem of dynamic device control is complicated, and of high cost.

To achieve the above object, the technical solution adopted in the utility model is：A kind of Bidirectional swinging device is provided, the bottom of including Seat, the stent being installed on the pedestal, middle part are articulated with the swing span of the cradle top and respectively drive the swing span In two sets of swing haulage gears that orthogonal both direction is swung；Each swing haulage gear includes described for pulling Rope that swing span is swung, the shaft for driving rope movement, the driving shaft rotation motor, be respectively arranged in it is described Two movable pulleys of swing span opposite sides and be installed on the pedestal respectively with two movable pulley positions corresponding two A fixed pulley, the shaft are installed on the stent, and the motor is installed on the pedestal, the stage casing winding of the rope In in the shaft, the both ends of the rope bypass and each fixed pulley phase respectively around two fixed pulleys, again respectively The both sides of the movable pulley and the pedestal answered are fixedly linked；It is a set of it is described swing haulage gear two fixed pulley centers it Between line perpendicular to it is another set of it is described swing haulage gear two fixed pulley centers between line.

Further, universal joint is installed, the universal joint is connected with the middle part of the swing span at the top of the stent.

Further, the stent includes orthogonal two frame bodies, and each frame body is in arch form, two frame bodies Arch form in the middle part of be fixedly linked, two shafts are respectively arranged on two frame bodies.

Further, each frame body includes two block frame plates being arranged in parallel, and the both ends of each shaft are respectively pivoted to On corresponding two frame plates.

Further, the length direction of each frame body it is corresponding with the shaft that the frame body is supported two it is described fixed Line direction between pulley center is consistent.

Further, each fixed pulley is respectively pivoted to the end of the corresponding frame body.

Further, the limiting plate for limiting the swing span angle of inclination is also equipped on the stent.

Further, each swing haulage gear further includes two preloaders for adjusting the cord tightness degree, Two preloaders are respectively arranged in the pedestal, and both ends of two preloaders respectively with the rope are connected.

Further, the thickness direction of the vertical pedestal of the length direction of each preloader is also pacified on the pedestal The deflecting axis of deflecting is carried out equipped with the end being respectively used to each rope, the end of each rope is around corresponding described Deflecting axis is connected with the corresponding preloader.

Further, the swing span is in " ten " font.

The advantageous effect of Bidirectional swinging device provided by the utility model is：Compared with prior art, the utility model The top of stent is hinged and supports swing span, sets movable pulley respectively in four sides of swing span, each dynamic cunning is corresponded on pedestal After the position of wheel sets fixed pulley, each rope to wrap two movable pulleies being oppositely arranged and corresponding two fixed pulleys respectively respectively It is fixedly linked with pedestal, and two ropes is respectively driven by two shafts；So as to when a shaft rotates, tense corresponding The other end of the rope so that the fixed pulley and movable pulley of end wrapping are close to each other, and is loosened, so that the end in one end of rope The fixed pulley of wrapping is located remotely from each other with movable pulley, and then realizes and swing span is pulled to be swung on stent；And it is put by two sets of tractions Motivation structure realizes that swing span is swung along in orthogonal both direction, and control is simple, at low cost.

Description of the drawings

It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing is briefly described needed in description, it should be apparent that, the accompanying drawings in the following description is only that this practicality is new Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with Other attached drawings are obtained according to these attached drawings.

Fig. 1 is the structure diagram one of Bidirectional swinging device that the utility model embodiment provides；

Fig. 2 is the structure diagram two of the Bidirectional swinging device of Fig. 1, does not show motor in figure；

Fig. 3 is the schematic diagram of the part-structure of the Bidirectional swinging device of Fig. 2；

The positive structure diagram of part-structure, illustrates only a set of traction in figure in the Bidirectional swinging device that Fig. 4 is Fig. 2 Swing mechanism；

Structure diagram when the traction swing mechanism that Fig. 5 is Fig. 4 is swung；

Fig. 6 is the change schematic diagram of rope total length difference in Fig. 5；

The structure diagram one of stent and swing span in the Bidirectional swinging device that Fig. 7 is Fig. 1；

Fig. 8 is the stent of Fig. 7 and the structure diagram two of swing span；

Fig. 9 is the enlarged structure schematic diagram of preloader in Fig. 1；

Figure 10 is the enlarged structure schematic diagram of shaft in Fig. 1.

Wherein, each attached drawing main mark in figure：

10- pedestals；11- accommodating cavities；20- stents；21- frame bodies；211- frame plates；2111- support levels；22- limiting plates； 25- universal joints；40- swing spans；41- oscillating decks；411- annular slabs；42- support bars；70- swings haulage gear；71- ropes； 72- shafts；721- first segments；722- second segments；725- vanes；726- detectors；73- fixed pulleys；74- movable pulleys；75- Motor；76- transmission mechanisms；761- driving wheels；762- driven wheels；763- belts；77- preloaders；771- sliding axles；772- is kept off Plate；773- compressed springs；774- blocks；775- connection rings；78- deflecting axis.

Specific embodiment

In order to which technical problem to be solved in the utility model, technical solution and advantageous effect is more clearly understood, with Lower combination accompanying drawings and embodiments, the present invention is further described in detail.It should be appreciated that specific reality described herein It applies example to be only used to explain the utility model, is not used to limit the utility model.

It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly another On one element or it is connected on another element.When an element is known as " being connected to " another element, it can To be directly to another element or be indirectly connected on another element.

In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more this feature." multiple " are meant that two or two in the description of the present invention, More than, unless otherwise specifically defined." several " are meant that one or more, unless otherwise clearly specific limit It is fixed.

In the description of the present invention, it is to be appreciated that term " " center ", " length ", " width ", " thickness ", The orientation of instructions such as " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " or Position relationship is based on orientation shown in the drawings or position relationship, is for only for ease of description the utility model and simplifies description, Rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and operation, because This is it is not intended that limitation to the utility model.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, It can be the interaction relationship of connection inside two elements or two elements.For those of ordinary skill in the art Speech, can understand concrete meaning of the above-mentioned term in the utility model as the case may be.

Also referring to Fig. 1 to Figure 10, now Bidirectional swinging device provided by the utility model is illustrated.It is described two-way Pendulous device, including pedestal 10, stent 20, swing span 40 and two sets of swing haulage gears 70；Stent 20 is installed on pedestal 10； 40 middle part of swing span is articulated with 20 top of stent, so as to support swing span 40, while by stent 20 convenient for swing span 40 It is swung on stent 20.In addition, swing span 40 and the top of stent 20 are hinged, oscillation center can be made closer to swing Frame 40, and then when swing span 40 is swung, center will not move, so as to when being balanced training with test, Physical condition of the human body when swinging can be more precisely tested, accurately reflects the limb rehabilitating feelings that lower limb muscles damage the wounded Condition.

Each haulage gear 70 that swings is for driving swing span 40 to be swung up in a side, and two sets of swing haulage gears 70 Driving swing span 40 is swung in orthogonal both direction, to realize bidirectional swinging.Each haulage gear 70 that swings includes rope Rope 71, shaft 72,75, two movable pulleys 74 of motor and two fixed pulleys 73；Rope 71 is used to drive swing span 40 in stent 20 Upper swing；Shaft 72 is for pulling rope 71, and 75 drive shaft 72 of motor rotates, to pull rope 71；Two movable pulleys 74 divide Be not installed on 40 opposite sides of swing span, two fixed pulleys 73 are articulated on pedestal 10, the position of two fixed pulleys 73 with two The position of movable pulley 74 is corresponding；The stage casing of rope 71 is wound in shaft 72, and the both ends of rope 71 are fixed sliding around two respectively 73 are taken turns, again respectively around being fixedly linked with the both sides of each 73 corresponding movable pulley 74 of fixed pulley and pedestal 10, so as in shaft 72 During rotation, one end of corresponding rope 71 is tensed, so that the fixed pulley 73 and movable pulley 74 of end wrapping are close to each other, and loosens this The other end of rope 71 so that the fixed pulley 73 of end wrapping is located remotely from each other with movable pulley 74, and then is realized and pulls swing span 40 It is swung on stent 20.

Two sets swing in haulage gear 70：Line between a set of two 73 centers of fixed pulley for swinging haulage gear 70 hangs down The directly line between another set of two 73 centers of fixed pulley for swinging haulage gear 70.So as to which two sets of traction swing mechanisms are real Existing swing span 40 is swung along in orthogonal both direction.

Bidirectional swinging device provided by the utility model, compared with prior art, the top of the utility model stent 20 come It is hinged and supports swing span 40, movable pulley 74 is set respectively in four sides of swing span 40, each movable pulley 74 is corresponded on pedestal 10 Position fixed pulley 73 is set respectively, each rope 71 wraps two movable pulleies being oppositely arranged and corresponding two fixed pulleys respectively It is fixedly linked after 73 with pedestal 10, and two ropes 71 is respectively driven by two shafts 72；So as in 72 turns of a shaft When dynamic, one end of corresponding rope 71 is tensed, so that the fixed pulley 73 and movable pulley 74 of end wrapping are close to each other, and loosens this The other end of rope 71 so that the fixed pulley 73 of end wrapping is located remotely from each other with movable pulley 74, and then is realized and pulls swing span 40 It is swung on stent 20；And realize that swing span 40 is put along in orthogonal both direction by two sets of traction swing mechanisms Dynamic, control is simple, at low cost.

Further, also referring to Fig. 1, Fig. 7 and Fig. 8, one as Bidirectional swinging device provided by the utility model Kind specific embodiment, the top of stent 20 are equipped with universal joint 25, and universal joint 25 is connected with the middle part of swing span 40.In stent The middle part of swing span 40, is hinged by 20 top setting universal joint 25 with facilitating by universal joint 25 and the top of stent 20.Into And swing span 40 is facilitated to be swung on stent 20.The structure facilitates stent 20 to support swing span 40 simultaneously.In some other reality It applies in example, pearl hinge can also be used to be hinged swing span 40 and the top of stent 20.

Further, also referring to Fig. 1, Fig. 2, Fig. 7 and Fig. 8, as Bidirectional swinging device provided by the utility model A kind of specific embodiment, stent 20 includes orthogonal two frame bodies 21, and each frame body 21 is in arch form, two frame bodies 21 It is fixedly linked in the middle part of arch form, two shafts 72 are respectively arranged on two frame bodies 21.Use two orthogonal 21 phases of frame body Company forms stent 20, and processing and fabricating is simple, occupies little space, while is also convenient for installation with supporting each shaft 72.And by each frame body In arch form, swing span 40 easy to support facilitates swing span 40 to be swung on stent 20, and the structure can make stent for 21 settings Corresponding position has more space between 20 bottom and two frame bodies 21, can be with to facilitate accommodating 75 grade components of motor Reduce each swing 70 occupied space of haulage gear, and then the volume of the Bidirectional swinging device can be reduced.

Further, each frame body 21 includes two block frame plates 211 being arranged in parallel, and the both ends of each shaft 72 are respectively pivoted to phase It answers on two frame plates 211.Each frame body 21 is made using two frame plates being arranged in parallel 211 and is formed, and processing and fabricating is convenient, structure letter It is single, it is at low cost, while be also convenient for respective axes of rotation 72 being mounted on frame body 21.Specifically, each frame plate 211 is in arch form structure, into And make corresponding frame body 21 into arch form structure.

Further, 72 corresponding two fixed pulleys 73 of shaft that the length direction of each frame body 21 is supported with the frame body 21 Line direction between center is consistent.Since two shafts 72 are respectively arranged on two frame bodies 21, and by two frame bodies 21 Length direction is consistent with two fixed pulleys, the 73 line direction of two sets of traction swing mechanisms respectively, can make each rope 71 through corresponding After shaft 72, corresponding fixed pulley 73 and movable pulley 74 are preferably wrapped, reduces the frictional force to rope 71.

Further, each fixed pulley 73 is respectively pivoted to the end of corresponding frame body 21, so as to facilitate each fixed pulley 73 of support. In addition, since each frame body 21 is made using two frame plates being arranged in parallel 211, then facilitate and each fixed pulley 73 is articulated in frame plate On 211, installation is more convenient, is also convenient for being laid out.

Further, the limiting plate 22 for limiting 40 angle of inclination of swing span is also equipped on stent 20.In stent 20 Upper setting limiting plate 22, to limit the angle of the swing of swing span 40, preferably protects rope 71.

Further, also referring to Fig. 4-Fig. 6, the shaft 72 of each set traction swing mechanism is during rotation, rope The length that rope 71 loosens one end increases, and the length for tightening one end reduces, and often rope 71 loosens one end incrementss and rope 71 Tightening one end reduction amount is different, and when the two difference is more than the permission deformation quantity of rope 71, rope 71 can be then broken, The appropriate spatial position of searching correlated parts is thus needed, difference is reduced, thus passes through the setting of limiting plate 22, Ke Yiqi To the effect of protection rope 71.

Further, total balance of the body training is carried out for convenience, and the altitude range of the Bidirectional swinging device is generally set to 200-300mm, people station to be facilitated to be tested on Bidirectional swinging device.I.e. the height of stent 20 is 200-300mm.Rope 71 Overall length difference is equal to rope 71 and originates the total length that total length subtracts rope 71 after rotation.In wherein such as Fig. 4,40 liang of swing span It is 71 initial position of rope when side is located at sustained height.After analysis calculates, ideal initial position is obtained, with universal It is origin that 25 centers, which are saved, corresponding to the position on pedestal 10, then the coordinate of universal joint 25 is (0,122), each 74 center of movable pulley Coordinate for (285,122), the coordinate at each 73 center of fixed pulley is (250,14), unit mm.I.e. 25 center of universal joint to original The height of point is 122mm, and the lateral distance at 25 center of universal joint to origin is 0；The height of each movable pulley 74 center to origin is 122mm, the lateral distance at each 74 center of movable pulley to origin is 285mm；The height of each 73 center of fixed pulley to origin is 14mm, The lateral distance of each 73 center of fixed pulley to origin is 250mm.Under this location status, when swing span 40 rotates 14.6 degree, Maximum difference occurs, and maximum difference is 0.25mm (difference subtracts reduction amount equal to incrementss, retains two-decimal).Then swing span 40 angles swung are less than or equal to 14.6 degree.

Further, also referring to Fig. 1, Fig. 2 and Fig. 9, one as Bidirectional swinging device provided by the utility model Kind of specific embodiment, each haulage gear 70 that swings further include two preloaders 77 for adjusting 71 elasticity of rope, two Preloader 77 is respectively arranged in pedestal 10, and both ends of two preloaders 77 respectively with rope 71 are connected.Preloader 77 is set, with The elasticity of rope 71 is adjusted, can preferably tense rope 71, and rope 71 and pedestal 10 are fixedly linked.

Further, the accommodating cavity 11 for offering accommodating preloader 77 is coordinated in pedestal 10.It is opened up in pedestal 10 accommodating Chamber 11 to install preloader 77, can facilitate the fixed preloader 77 of installation, while also allow for the both ends of rope 71 and preloader 77 It is connected.

Further, the thickness direction of the length direction vertical feet 10 of each preloader 77, is also equipped on pedestal 10 point Yong Yu carry out the deflecting axis 78 of deflecting to the end of each rope 71, the end of each rope 71 around corresponding deflecting axis 78 with it is right The preloader 77 answered is connected.The structure can make 77 occupied space of preloader smaller, at the same pedestal 10 set it is relatively thin, occupy compared with Small space.Further, setting deflecting axis 78, is connected so as to the end of rope 71 with preloader 77, while preferably protection Rope 71.

Further, each preloader 77 includes sliding axle 771, slides the baffle 772 being placed on sliding axle 771, is placed on cunning Compressed spring 773 and the block 774 for being installed on 771 one end of sliding axle on moving axis 771, the both ends of compressed spring 773 are supported respectively Baffle 772 and block 774 are held, baffle 772 is fixed on pedestal 10, the other end of sliding axle 771 and the corresponding end phase of rope 71 Even.Block 774 is flexibly supported by compressed spring 773, and block 774 is fixedly linked with sliding axle 771, then compressed spring 773 Resiliency urged sliding axle 771 moves in block 772, and when fixing baffle 772, then sliding axle 771 can be tensed or be loosened Rope 71 will adjust 71 elasticity of rope to realize, and then compensate the 71 both ends amount of tension of rope that is likely to occur and anti-loose measure Difference (because 71 one end of rope can be caused excessively tight for above-mentioned difference and the other end excessively relaxes, so as to use to rope 71 The precision of service life and displacement distance impacts).Certainly, in some other embodiment, preloader 77 can also use ejection The telescopic devices such as telescopic rod replace.

Further, the other end of sliding axle 771 is equipped with the connection ring 775 for connecting rope 71, on sliding axle 771 Connection ring 775 is set, to facilitate connection rope 71.Further, connection ring 775 can be integrally formed with sliding axle 771.When So, in further embodiments, connection ring 775 can also weld or screw thread side is connected on sliding axle 771.

Further, block 674 is stop nut, to facilitate processing and fabricating, reduces cost.

Further, also referring to Fig. 1 and Fig. 2, a kind of tool as Bidirectional swinging device provided by the utility model Body embodiment, each swing mechanism that draws further include connection shaft 72 and the transmission mechanism 76 of motor 75, and transmission mechanism 76 includes The driving wheel 761 that is connected with motor 75, the driven wheel 762 being connected with shaft 72 and it connect driving wheel 761 and driven wheel 762 Belt 763.Transmission mechanism 76 is set, gearratio can be adjusted, to increase torsion, while the structure is also convenient for mounting arrangement motor 75.It is simple in structure using belt transmission, it is at low cost, it is easy to make.Certainly, in some other embodiment, transmission mechanism 76 Chain drive 76, gear-box etc. can be used.

Further, rope 71 can use steel wire rope.Certainly in some other embodiment, rope 71 can also make It is made of other materials.

Further, also referring to Fig. 1, Fig. 2 and Figure 10, one as Bidirectional swinging device provided by the utility model Kind specific embodiment, shaft 72 have first segment 721 and the second segment 722 extended by first segment 721, and rope 71 is wound in On first segment 721.Shaft 72 is set as first segment 721 and second segment 722, to facilitate processing, while is also convenient for winding rope 71。

Further, the inclined hole (not shown) passed through for rope 71 is offered on first segment 721, the axial direction of inclined hole is inclined Tiltedly in the axial direction of shaft 72, and the both ends of inclined hole are located at the both ends of first segment 721 respectively.It is set in the first segment 721 of shaft 72 Rope 71 can be passed through inclined hole by inclined hole, so as to preferably prevent rope 71 from skidding, so that shaft 72 preferably pulls rope 71。

Further, also referring to Fig. 1, Fig. 2 and Figure 10, one as Bidirectional swinging device provided by the utility model Kind of specific embodiment, the end of the first segment 721 of shaft 72 are equipped with the vane 725 of tool grid in a ring, on stent 20 Detector 726 for detecting 725 rotation angle of vane is installed.Vane 725 is installed in the end of first segment 721, it can To detect the rotation angle of shaft 72 by detector 726, so that shaft 72 is preferably controlled to rotate, and then swing span is controlled 40 movement.

Further, shaft 72 is stepped, and the diameter of first segment 721 is more than the diameter of second segment 722.By first segment 721 diameter setting can facilitate winding rope 71, be also convenient for processing and fabricating, be also convenient for simultaneously more than the diameter of second segment 722 Shaft 72 is mounted on stent 20.

Further, the periphery of each fixed pulley 73 is equipped with the locating slot for housing rope 71, is detached to prevent rope 71. Similarly, the periphery of each movable pulley 74 is equipped with the locating slot for housing rope 71, is detached to prevent rope 71.

Further, also referring to Fig. 1, Fig. 7 and Fig. 8, one as Bidirectional swinging device provided by the utility model Kind specific embodiment, swing span 40 are in " ten " font.Swing span 40 is set in " ten " font, to mitigate weight, while side Each movable pulley 74 is just mounted on to each end of swing span 40.

Further, swing span 40 includes oscillating deck 41 and the support bar 42 being installed on oscillating deck 41, by swinging It is hinged with universal joint 25 to facilitate that support bar 42 is set on plate 41, while is also convenient for the structures such as support pedal.Further, it swings Plate 41 is in " ten " font, and swing span 40 is made in " ten " font.

Further, the middle part of oscillating deck 41 is equipped with annular slab 411.At the middle part of oscillating deck 41, annular slab 411 is set, with The limiting plate 22 on stent 20 is facilitated to carry out backstop annular slab 411, and then preferably play position-limiting action.

Further, the limiting plate 22 on stent 20 in a ring, to be easily installed on stent 20, while facilitates restriction to put The angle that moving frame 40 is swung.

Further, also referring to Fig. 3 and Fig. 4, the both sides on the top of each frame plate 211 are respectively equipped with support level 2111, the inside of limiting plate 22 and support limit plate 22 are held in each 2111 bottom of support level, and then pass through the frame plate 211 of each frame body 21 On support level 2111, facilitate positioning and support limit plate 22.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (10)

1. Bidirectional swinging device, it is characterised in that：It is articulated with including pedestal, the stent being installed on the pedestal, middle part described It the swing span of cradle top and respectively drives two sets that the swing span is swung in orthogonal both direction and swings draggers Structure；It is each it is described swing haulage gear include for the swing span is pulled to swing rope, drive the rope movement shaft, The motor of the shaft rotation is driven, two movable pulleys of the swing span opposite sides is respectively arranged in and is installed on the bottom Two fixed pulleys corresponding with two movable pulley positions, the shaft are installed on the stent respectively on seat, the electricity Machine is installed on the pedestal, and the stage casing of the rope is wound in the shaft, and the both ends of the rope bypass two respectively The fixed pulley, the both sides for bypassing the movable pulley corresponding with each fixed pulley and the pedestal respectively again are fixedly linked； Line between a set of two fixed pulley centers for swinging haulage gear is perpendicular to the another set of swing haulage gear Line between two fixed pulley centers.

2. Bidirectional swinging device as described in claim 1, it is characterised in that：Universal joint, institute are installed at the top of the stent The middle part that universal joint is stated with the swing span is connected.

3. Bidirectional swinging device as described in claim 1, it is characterised in that：The stent includes orthogonal two framves Body, each frame body are in arch form, are fixedly linked in the middle part of the arch form of two frame bodies, two shafts are respectively arranged in two On the frame body.

4. Bidirectional swinging device as claimed in claim 3, it is characterised in that：Each frame body includes two block frames being arranged in parallel Plate, the both ends of each shaft are respectively pivoted on corresponding two frame plates.

5. Bidirectional swinging device as claimed in claim 3, it is characterised in that：The length direction of each frame body and the frame body institute Line direction between the corresponding two fixed pulley centers of the shaft of support is consistent.

6. Bidirectional swinging device as claimed in claim 5, it is characterised in that：Each fixed pulley is respectively pivoted to corresponding described The end of frame body.

7. such as claim 1-6 any one of them Bidirectional swinging devices, it is characterised in that：It is also equipped with being used on the stent Limit the limiting plate at the swing span angle of inclination.

8. such as claim 1-6 any one of them Bidirectional swinging devices, it is characterised in that：Each swing haulage gear also wraps Two preloaders for adjusting the cord tightness degree are included, two preloaders are respectively arranged in the pedestal, and two Both ends of the preloader respectively with the rope are connected.

9. Bidirectional swinging device as claimed in claim 8, it is characterised in that：The length direction of each preloader is vertically described The thickness direction of pedestal is also equipped with being respectively used to carrying out the end of each rope the deflecting axis of deflecting on the pedestal, The end of each rope bypasses the corresponding deflecting axis and is connected with the corresponding preloader.

10. such as claim 1-6 any one of them Bidirectional swinging devices, it is characterised in that：The swing span is in " ten " font.