CN109807691A - A kind of foot prop circumferential direction transmission device - Google Patents

Abstract

A kind of foot prop circumferential direction transmission device provided by the invention, the circumferential direction transmission device is the intermittent circumferential transmission device to rotate in a circumferential direction, its circumferential movement that interval is done by being mounted on the rack an intermittent movement module drive rotary-tray, the cyclic train being mounted on the rotary-tray carries out rotation in the foot prop fixture for following the rotary-tray to be driven through transmission axis connection while doing interval circumferential movement by the engaged transmission of bevel gear, it is processed to which the foot prop is transported to each processing stations, the foot prop enters the face of equal rotation transformation processing when each station simultaneously, realize that multiple faces successively process, realize that the workpiece between each process automatically delivers, it avoids repeating to dismount and carrying workpiece, reduce the labor intensity of worker, further each processing stations adaptation circumferential transmission device arrangement, it realizes and closes Removing the work office reduces the occupied area that the size of device is saved.

Description

A kind of foot prop circumferential direction transmission device

Technical field

The present invention relates to field of transmissions, more particularly, to a kind of foot prop circumferential direction transmission device

Background technique

A kind of mounting seat of the foot prop as equipment, such as the triangle foot prop of compressor, are formed by punch process, It is also needed during finished product is made by multiple processing stations, those processing stations include: drilling, tapping, pre-installation spiral shell Nail and spray painting are protected, and need sequentially to carry out between each process.Currently, shop equipment is all to carry out each process independently Setting, and an operator is individually equipped between each process, in process of production, the workpiece between each process is removed A large amount of manpower and material resources have all been lost in fortune and repetition fixed disassembly, and production efficiency is low, there are security risk, each planning sheet Solely setting occupies a large amount of production space.

Summary of the invention

In view of the foregoing, the present invention provides a kind of foot prop circumferential direction transmission devices, realize the work between each process Part automatically delivers, and avoids repeating to dismount and carrying workpiece, reduces the labor intensity of worker, save occupied area.

For this purpose, a kind of foot prop circumferential direction transmission device provided by the invention, to realize foot prop is transmitted to it is each Processing stations are processed, and the circumferential direction transmission device is the intermittent circumferential transmission device to rotate in a circumferential direction comprising: a machine Frame, an intermittent movement module, a rotary-tray and a cyclic train, the intermittent movement module are mounted on the rack, Its output end connects the rotary-tray, and the cyclic train is arranged above the pallet, and the cyclic train includes passing through The first bevel gear and engaged respectively with the first bevel gear predetermined that one mounting rack is fixedly mounted in the rack The second bevel gear of quantity, those second bevel gears are separately installed with a transmission shaft far from described first bevel gear one end, those Transmission shaft passes through an at least bearing block respectively and is mounted on the rotary-tray, those transmission shafts are far from the second bevel gear One end is equipped with a foot prop fixture, and the foot prop fixture drives for fixing the foot prop to be sent, the intermittent movement module It moving the rotary-tray intermittence and rotates scheduled angle, the foot prop is conveyed to the processing stations by the foot prop fixture, Simultaneously by the effect of the first bevel gear and the engaged transmission of the second bevel gear, the foot prop fixture meeting rotation is predetermined Angle keeps the machined surface of the foot prop parallel with the rotary-tray.

Preferably, the intermittent movement module includes a driving motor, a cam protractor and the connection driving electricity Machine and the cam protractor realize a transmission mechanism of power transmitting, and the driving motor and the cam protractor are mounted on In the rack, the output end of the cam protractor connects the rotary-tray, described into each processing work to guarantee The time of processing is reserved behind position.

Further, the transmission mechanism includes chain wheel driving mechanism, gear drive or pulley transmission mechanism, is used To improve the efficiency that power transmits between the driving motor and the cam protractor.

Preferably, the mounting rack includes that a support frame and a support plate, support frame as described above are mounted on the rack simultaneously Close to the rotary-tray, the support plate is adjustable to be mounted on support frame as described above and to prolonging in the middle part of the rotary-tray It stretches, the one end of the support plate in the middle part of the rotary-tray is extended with a fixing axle towards the rotary-tray, and described One bevel gear is fixedly mounted in the fixing axle, improves controllability, is easily installed debugging.

Further, offer a pair of strip hole being parallel to each other on support frame as described above, the support plate by bolt with This cooperates adjustable be mounted on support frame as described above to strip hole.

Further, the first bevel gear includes but is not limited to that key, holding screw or expansion sleeve are fixedly mounted on institute It states in fixing axle, realizes the fixed installation of the first bevel gear, prevent it from loosening during engaged transmission, guarantee processing Precision.

Preferably, the foot prop fixture includes the electromagnet of the predetermined quantity of a pedestal and setting on the base, institute The Fast Installation and fixation of the foot prop are realized in the setting for stating electromagnet, prevent from falling off in transmit process.

Preferably, the foot prop fixture includes the mechanical type spring pawl disk of a pedestal and setting on the base, is protected The more firm of the foot prop fixation is demonstrate,proved, avoids error occur in processing.

Preferably, a safe dustproof cover is additionally provided in the cyclic train, improve equipment using safe, while preventing ash Dirt is fallen into other sundries, influences equipment normal use.

The utility model has the advantages that

A kind of foot prop circumferential direction transmission device provided by the invention, passes through intermittent movement module, rotary-tray and epicyclic wheel Cooperation realization drive while circumferentially rotate the foot prop fixture to carry out rotation, so that the foot prop is transported to each processing Station is processed, while the foot prop enters the face of equal rotation transformation processing when each station, realizes that multiple faces successively process, To be adapted to the foot prop that multiple faces need to process, and realize that the workpiece between each process automatically delivers, avoid repeating to dismount and Workpiece is carried, the labor intensity of worker is reduced, further each processing stations adaptation circumferential transmission device arrangement, is realized Rational deployment reduces the occupied area that the size of device is saved.

Detailed description of the invention

Fig. 1 is a kind of front and back sides assembled view of foot prop provided in an embodiment of the present invention；

Fig. 2 is a kind of three dimensional structure diagram for foot prop processing unit (plant) that the embodiment of the present invention mentions；

Fig. 3 is the three dimensional structure diagram of foot prop processing unit (plant) different perspectives in Fig. 2；

Fig. 4 is the top view of foot prop processing unit (plant) in Fig. 2；

Fig. 5 is the partial enlargement diagram in Fig. 2 at A；

Fig. 6 is the partial enlargement diagram in Fig. 3 at B；

Fig. 7 is that the embodiment of the present invention provides three-dimensional structure schematic diagram of the foot prop processing unit (plant) without safe dustproof cover；

Fig. 8 is the partial enlargement diagram in Fig. 7 at C；

Fig. 9 is the partial enlargement diagram in Fig. 7 at D；

Figure 10 is that the embodiment of the present invention provides the partial structural diagram of foot prop processing unit (plant) tapping module；

Figure 11 is that the embodiment of the present invention provides the partial structural diagram of foot prop processing unit (plant) binding module.

In figure: 100- foot prop, 100a- side wall, 100b- unthreaded hole, 100c- circular hole, 1- rack, 2- tapping module, 3- binding Module, 4- shedding mechanism, 5- feed mechanism, 6- foot prop fixture, 6a- pedestal, 6b- claw, 6c-U shape slot, 7- transmission mechanism, 8- Cam protractor, 9- driving motor, 10- human-computer interaction interface, 11- blanking port, 12- safe dustproof cover, 13- rotary-tray, 14- First transmission shaft, 15- shaft coupling, 16- second driving shaft, 17- second bearing seat, 18- cyclic train, 18a- expansion sleeve, 18b- First bevel gear, 18c- second bevel gear, 18d- fixing axle, 19- first bearing seat, the first support frame of 200-, 201- mounting base, 202- tapping cylinder, 203- tapping motor, 204- tapping seat, 205- screw tap, the second support frame of 300-, 301- vibrating disk, 302- Take nail cylinder, 303- send nail slot, and 304- takes nail seat, the first mounting plate of 305-, follows closely cylinder on 306- first, 307- second is installed Plate follows closely cylinder, 309- electric screwdriver, 310- electric screwdriver seat, 400- third support frame, 401- discharging assistant cylinder, 402- on 308- second Second pushes block, 403- strip hole, 404- support plate, 405- discharging cylinder, 406- discharging pushing block, 500- feeding cylinder, 501- Through-hole, 502- objective table, 503- lifting pin, 504- postive stop baffle, 505- bottom plate, 506- side plate, 507- first push block, 508- Feeding cylinder, 509- feeding assistant cylinder, 510- balance staff, 511- connecting rod, the second limited block of 512-, 513- pushing cylinder, 514- Feeding sucker, 515- Kan shape rack, the first electromagnet of 516-.

Specific embodiment

Technical scheme is described further with reference to the accompanying drawings and embodiments.

Refering to fig. 1, foot prop 100 provided in this embodiment is stamping triangle foot prop 100, and its shape is positive Triangle, the middle part of the triangle foot prop 100 has been stamped and formed out a perforative circular hole 100c, thirdly side is respectively formed with one side wall A unthreaded hole 100b is reserved on 100a, side wall 100a, the unthreaded hole 100b needs successively to carry out tapping and screwing operation, on The purpose of screw is to protect spiral shell to guarantee that the threaded hole after a wherein at least tapping is not covered by paint in subsequent paint process Line is grounded or is dismounted convenient for subsequent installation, and certainly, the invention is not limited to process triangle foot provided in this embodiment certainly Frame 100.

The present embodiment additionally provides a kind of foot prop processing unit (plant), for processing the foot prop 100 comprising a feeder Structure, a foot prop circumferential direction transmission device and each processing stations.

Refering to Fig. 2, Fig. 4, Fig. 6, Fig. 7 and Fig. 8, foot prop circumferential direction transmission device provided in this embodiment is applied described Foot prop processing unit (plant), to realize that foot prop 100, which is transmitted to each processing stations, to be processed, as shown in figure 4, it is described it is each plus Work station is evenly arranged around the foot prop circumferential direction transmission device, and the circumferential direction transmission device is the intermittent circumferential direction to rotate in a circumferential direction Transmission device comprising: a rack 1, an intermittent movement module, a rotary-tray 13 and a cyclic train 18；The interval Motion module includes a driving motor 9, a cam protractor 8 and connects the driving motor 9 and the cam protractor 8 in fact One transmission mechanism 7 of existing power transmitting, the transmission mechanism 7 include that chain wheel driving mechanism, gear drive or belt pulley pass Motivation structure is realized between the driving motor 9 and the cam protractor 8 using synchronous pulley driving mechanism in the present embodiment Power transmitting, to improve power transmission efficiency, the output end of the cam protractor 8 connects the rotary-tray 13, described Cyclic train 18 is arranged above the pallet, and the cyclic train 18 includes being fixedly mounted on the rack by a mounting rack A first bevel gear 18b on 1 and respectively with the second bevel gear 18c of the first bevel gear 18b predetermined quantity engaged, Those second bevel gears 18c is separately installed with one first transmission shaft 14 far from the one end the first bevel gear 18b, those first biographies Moving axis 14 is mounted on the rotary-tray 13 by a first bearing seat 19 respectively, those first transmission shafts 14 are far from described the One end of two bevel gear 18c is equipped with a foot prop fixture 6, and the foot prop fixture 6 is for fixing the foot prop 100 to be conveyed, institute It states foot prop fixture 6 and is extended with a second driving shaft 16 close to the side of first transmission shaft 14, the second driving shaft 16 is logical It crosses a second bearing seat 17 to be mounted on the rotary-tray 13, between first transmission shaft 14 and the second driving shaft 16 It is connected by a shaft coupling 15, to realize that power transmits；Rotary-tray 13 described in the intermittent movement module drive rotates pre- Fixed angle, the foot prop 100 is conveyed to each processing stations by the foot prop fixture 6, while being bored by described first The effect of the engaged transmission of the gear 18b and second bevel gear 18c, the foot prop fixture 6 are pre- with 100 rotation of foot prop Determine angle, be presented on the foot prop 100 face to be processed at the processing stations, successively regular circulation carries out, this implementation Adaptation first transmission shaft 14 and described is built-in in first bearing seat 19 and the second bearing seat 17 described in example respectively The bearing (not shown) of second driving shaft 16.

In conjunction with Fig. 3 and Fig. 4, further, in order to improve equipment using safe, while preventing dust and other sundries Fall into and influence equipment normal use, be additionally provided with a safe dustproof cover 12 in the cyclic train 18.

Further, the mounting rack includes a third support frame 400 and a support plate 404, the third support frame 400 It is mounted in the rack 1 and offers what a pair was parallel to each other on the rotary-tray 13, the third support frame 400 Strip hole 403, the support plate 404 by bolt and this strip hole 403 is cooperated adjustable be mounted on the third and support Extend on frame 400 and to the middle part of the rotary-tray 13, the one end of the support plate 404 close to 13 middle part of rotary-tray Fixing axle a 18d, the first bevel gear 18b, which is extended with, towards the rotary-tray 13 passes through key, holding screw or swelling Set 18a is fixedly mounted on the fixing axle 18d, in the present embodiment using expansion sleeve 18a realize the first bevel gear 18b with The fixation of the fixing axle 18d facilitates the installation and debugging of the first bevel gear 18b.

Further, specific to Fig. 6, the foot prop fixture 6 includes a pedestal 6a and is arranged in pre- on the pedestal 6a Second electromagnet (not shown) of fixed number amount or a mechanical type spring pawl disk have selected mechanical type spring pawl in the present embodiment Disk, the pawl disk include three claw 6b, and three claw 6b are evenly distributed on the pedestal 6a, and one end is close to each other, mutually Close one end is respectively equipped with a spring (not shown), and the spring (not shown) is arranged in the pedestal 6a, the claw 6b is hinged in the pedestal 6a, using lever principle when compressing the one end close to each other the claw 6b, the claw 6b Separate one end can be to contract, and pawl disk just can be transferred through the circular hole at 100 middle part of foot prop at this time, when release compress it is described When the power of claw 6b, one end that the claw 6b is located remotely from each other can be unfolded outward, and the claw 6b can be by the foot prop 100 at this time It is fixed on the pedestal 6a, is corresponded on the pedestal and offer a U-lag 6C at the unthreaded hole, avoid generating when processing dry It relates to, it is easy to process, a feeding assistant cylinder 509, first assistant cylinder are additionally provided at the feeding cylinder 508 at the same time Output end be equipped with one first and push block 507, claw 6b is compressed and discharged when for realizing feeding.

Refering to Fig. 2 and Fig. 6, further, a shedding mechanism 4, the unloader are additionally provided with after each process Structure 4 includes a discharging cylinder 405 and a discharging assistant cylinder 401, and the discharging cylinder 405 is mounted in the support plate 404, The output end of the discharging cylinder 405 is equipped with a discharging pushing block 406, and the auxiliary discharging cylinder 405 is mounted on the third On support frame 400, output end is equipped with one second and pushes block 402, the discharging auxiliary towards the foot prop fixture 6 Cylinder 401 drives described second to push claw 6b described in 402 low pressure of block, and the discharging cylinder 405 drives the discharging pushing block 406 Unload the foot prop 100.

Further, the rack 1 is also provided with one between the third support frame 400 and the rotary-tray 13 and falls Material mouth 11 quickly collects after facilitating the foot prop 100 to unload, guarantees the neat and tidy of whole device.

Refering to Fig. 2, Fig. 3 and Fig. 5, feeding of the feed mechanism 5 to realize the foot prop 100 comprising: a feeding Module and a feeding module, the feeding module include lifting body at an objective table 502 and at least two, the objective table 502 It is slidably mounted in the rack 1, and is additionally provided with a feeding cylinder 500, institute along the side in the direction of the objective table 502 sliding The cylinder body for stating feeding cylinder 500 is mounted in the rack 1, and output end is connect with the objective table 502, described to push The relatively described rack 1 of objective table 502 is slided；The jacking apparatus includes: that (figure is not for a lifting pin 503, one jacking driving motor Show), the Lifting bench (not shown) for placing the foot prop 100 and a pair of of postive stop baffle 504, the jacking driving motor (not shown) is mounted on 502 bottom of objective table and drives the jacking upwards of lifting pin 503, and the lifting pin 503 runs through institute The through-hole 501 opened up on objective table 502 is stated, the top of the lifting pin 503 is connect with the Lifting bench (not shown), this is right Postive stop baffle 504 is mounted on the objective table 502 and is arranged in the two sides of the Lifting bench (not shown), the postive stop baffle 504 extend along the direction that the Lifting bench (not shown) jacks upwards, to realize the quick positioning of the foot prop 100 and stablize Feeding；The feeding module is arranged above the feeding module comprising: a Kan shape rack 515, a feeding cylinder 508, one push away Pendulum cylinder 513 and a feeding sucker 514, the Kan shape rack 515 are mounted in the rack 1 comprising a bottom plate 505 and institute The vertical both side plate 506 of bottom plate 505 is stated, the bottom plate 505 is towards the feeding module, and its bottom plate 505 offers adaptation institute The through slot that foot prop 100 passes through is stated, the feeding cylinder 508 is rotatablely installed with the both side plate 506 respectively by a balance staff 510, The output end of the feeding cylinder 508 is equipped with the feeding sucker 514, and the feeding sucker is equipped with the first of predetermined quantity Electromagnet 516, the cylinder body of the pushing cylinder 513 are hinged on the bottom plate 505, and output end is hinged with a connecting rod 511, institute It states connecting rod 511 to be assemblied on the balance staff 510, the pushing cylinder 513 does expanding-contracting action and pushes the rotation of balance staff 510 predetermined Angle, it includes 0 ° and 90 ° that the angular range that the feeding cylinder 508 is swung, which is 0 °~90 °, when feeding cylinder 508 is rocked to 90 ° When position, i.e., feeding sucker 514 is in feeding position, and when feeding cylinder 508 swings to 0 ° of position, then feeding cylinder 508 is in Upper discharge position cooperates with the foot prop fixture 6 realize feeding at this time.Therefore the feed mechanism 5 is realized in the vertical direction Self-feeding and automatic material taking, avoid manual operation by workers from eliminating safe hidden trouble, and improve production efficiency.

Further, 515 bottom of Kan shape rack is equipped with one first photoelectric sensor (not shown), for detecting whether having The foot prop 100 is sent, and transmits a signal to the control module, while being used for the processing counting statistics of the foot prop 100, edge The extreme position of 502 glide direction of objective table is equipped with one first limited block (not shown), puts in the feeding cylinder 508 Dynamic extreme position is equipped with one second limited block 512.

Further, rack bar or screw rod can be selected in the lifting pin 503, has selected rack bar in the present embodiment.

Refering to Fig. 2 and Fig. 4, each processing stations include: drilling, tapping, mounting screw, spray painting or a work among these The quantity of any combination of position, selection determines that in the present embodiment, the processing stations are selected according to the actual conditions of workpieces processing Tapping and the combination by cartridge screw are selected, therefore additionally provides the group of three tapping modules 2 and a binding module 3 in the present embodiment It closes.

Refering to Fig. 4, Fig. 7 and Figure 10, the tapping module 2, there are three tapping modules 2 for setting in the present embodiment, to reality The tapping operation of the unthreaded hole 100b on existing 100 3 side wall 100a of the foot prop comprising one first support frame 200, one Mounting base 201, a tapping seat 204, a screw tap 205, a tapping motor 203 and a tapping cylinder 202, first support frame 200 are mounted in the rack 1 simultaneously close to the rotary-tray 13, and the mounting base 201 is mounted on first support frame 200 On, the tapping seat 204 is slidably mounted in the mounting base 201, naturally it is also possible to directly be slidably mounted on described first On support 200, the tapping motor 203 is mounted on the tapping seat 204, where output end towards the rotary-tray 13 Plane, the output end of the tapping motor 203 are equipped with the screw tap 205, and the tapping cylinder 202 is mounted on described first On support 200, output end connects the tapping seat 204, to drive the tapping motor 203 to feed, realizes tapping operation.

Refering to Fig. 4, Fig. 7, Fig. 9 and Figure 11, the binding module 3 includes one second support frame 300, and one send nail portion, one to take Nail portion in nail portion and one, second support frame 300 is mounted in the rack 1 and close to the rotary-tray 13, described The side for sending nail portion that second support frame 300 is set comprising: a vibrating disk 301 and one send nail slot 303, the vibration Disk 301 is mounted in the rack 1, and nail slot 303 is sent described in output end connection；It is described that nail portion is taken described to send nail slot for taking away The screws of 303 conveyings comprising: one takes nail cylinder 302 and one to take nail seat 304, described that nail cylinder 302 is taken to be mounted on described second On support frame 300, output end, which is equipped with, described takes nail seat 304；The upper nail portion includes: one first mounting plate 305, one second Mounting plate 307 is followed closely on one first and follows closely cylinder 308, an electric screwdriver 309 and an electric screwdriver seat 310 on cylinder 306, one second, and described the One mounting plate 305 is transversely mounted on second support frame, and 307 vertical sliding of the second mounting plate is mounted on described first It follows closely cylinder 306 on mounting plate 305, on described first to be mounted on first mounting plate 305, output end connection described second Mounting plate 307, to push relatively described first mounting plate 305 of second mounting plate 307 to slide, the electric screwdriver seat 310 is sliding Dynamic to be mounted on second mounting plate 307, the electric screwdriver 309 is mounted on the electric screwdriver seat 310, follows closely cylinder on described second 308 are mounted on second mounting plate 307, and output end connects the electric screwdriver seat 310, to push the electric screwdriver 309 into Give realization screwing operation.

Further, described to take nail seat 304 to be equipped with an inspection to follow closely sensor (not shown), described nail seat is taken for judging Whether 304 get screw, signal is fed back to the control module, the control module coordinates the movement of the binding module 3.

Refering to Fig. 2 and Fig. 4, further, to improve automation control, it is described for coordinating also to provide a control module Expect the movement of mechanism 5, the circumferential transmission device, the tapping module 2, the binding module 3 and shedding mechanism 4, also Including a human-computer interaction interface 10, facilitate the manipulation of device and the working condition of more intuitive observation device.

In conjunction with attached drawing, the present embodiment is achieved in that

Worker fills the foot prop 100 to be processed, starter, the feeding cylinder 500 on lifting body at two It pushes the objective table 502 to interact in the rack 1, so that the lifting body for filling the foot prop 100 is parked in discharge position, institute Pushing cylinder 513, the feeding cylinder 508, the feeding assistant cylinder 509 and 6 co-operating of foot prop fixture are stated, it will The foot prop 100 is fixed on the foot prop fixture 6, completes feeding.

The circumferential direction transmission device realizes the driving motor 9 and the cam point by the synchronous pulley driving mechanism The power transmitting of device 8 is spent, the cam protractor 8 drives the rotary-tray 13 to carry out intermittence and circumferentially rotates, while described Second bevel gear 18c drives 6 rotation of foot prop fixture under the first bevel gear 18b engaged transmission, makes the foot prop 100 Machined surface it is parallel with the rotary-tray 13, it is successively regular in this way to be transmitted, until all stations complete process, institute It states shedding mechanism 4 and carries out discharging, the foot prop fixture 6 carries out feeding again after the completion of discharging, the cycle goes on.

Above description is only specific embodiment of the present invention, it will be appreciated by those of skill in the art that here only It is for example, protection scope of the present invention is as defined in appended claims.Therefore with regard to the present patent application patent model Same variation made by enclosing, still falls within the range that the present invention is covered.

Claims (9)

1. a kind of foot prop circumferential direction transmission device, to realize that foot prop, which is transmitted to each processing stations, to be processed, feature exists In the circumferential direction transmission device is the intermittent circumferential transmission device to rotate in a circumferential direction comprising: a rack, an intermittent movement mould Block, a rotary-tray and a cyclic train, the intermittent movement module are mounted on the rack, described in output end connection Rotary-tray, the cyclic train are arranged above the pallet, and the cyclic train includes being fixedly mounted by a mounting rack The second bevel gear of a first bevel gear and the predetermined quantity engaged respectively with the first bevel gear in the rack, Those second bevel gears are separately installed with a transmission shaft far from described first bevel gear one end, those transmission shafts pass through at least respectively One bearing block is mounted on the rotary-tray, those transmission shafts are equipped with foot prop folder far from one end of the second bevel gear Tool, the foot prop fixture is for fixing the foot prop to be sent, the interval of rotary-tray described in the intermittent movement module drive Property the scheduled angle of rotation, the foot prop is conveyed to the processing stations by the foot prop fixture, while being bored by described first The effect of the engaged transmission of gear and the second bevel gear, the foot prop fixture meeting rotation predetermined angular make adding for the foot prop Work face is parallel with the rotary-tray.

2. foot prop circumferential direction transmission device according to claim 1, which is characterized in that the intermittent movement module includes a drive Dynamic motor, a cam protractor and the driver for connecting the driving motor and cam protractor realization power transmitting Structure, the driving motor and the cam protractor are mounted on the rack, and the output end of the cam protractor connects institute State rotary-tray.

3. foot prop circumferential direction transmission device according to claim 2, which is characterized in that the transmission mechanism includes sprocket wheel transmission Mechanism, gear drive or pulley transmission mechanism.

4. foot prop circumferential direction transmission device according to claim 1, which is characterized in that the mounting rack include a support frame and One support plate, support frame as described above are mounted on the rack and close to the rotary-tray, the adjustable installations of support plate Extend on support frame as described above and to the middle part of the rotary-tray, the one end of the support plate in the middle part of the rotary-tray It is extended with a fixing axle towards the rotary-tray, the first bevel gear is fixedly mounted in the fixing axle.

5. foot prop circumferential direction transmission device according to claim 4, which is characterized in that offer a pair of of phase on support frame as described above Mutually parallel strip hole, the support plate passes through bolt and this cooperates adjustable be mounted on support frame as described above to strip hole.

6. foot prop circumferential direction transmission device according to claim 4, which is characterized in that the first bevel gear includes but unlimited Yu Jian, holding screw or expansion sleeve are fixedly mounted in the fixing axle.

7. foot prop circumferential direction transmission device according to claim 1, which is characterized in that the foot prop fixture include a pedestal and The electromagnet of predetermined quantity on the base is set.

8. foot prop circumferential direction transmission device according to claim 1, which is characterized in that the foot prop fixture include a pedestal and A mechanical type spring pawl disk on the base is set.

9. foot prop circumferential direction transmission device described in any one of -8 according to claim 1, which is characterized in that the cyclic train On be additionally provided with a safe dustproof cover.