CN107537717B - Rotating mechanism with controllable rotating angle - Google Patents
Rotating mechanism with controllable rotating angle Download PDFInfo
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- CN107537717B CN107537717B CN201710942627.2A CN201710942627A CN107537717B CN 107537717 B CN107537717 B CN 107537717B CN 201710942627 A CN201710942627 A CN 201710942627A CN 107537717 B CN107537717 B CN 107537717B
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Abstract
The invention discloses a rotating mechanism with a controllable rotating angle, which comprises two arch bridges, a conveying chain, a carrier arranged on the conveying chain, a channel arranged between the two arch bridges and used for the conveying chain to pass through, a rack arranged on one side of each arch bridge, and a pushing device arranged on the rack, wherein the two arch bridges are symmetrically arranged; the carrier is sequentially provided with a first self-locking device, a rotating assembly and a second self-locking device along the traveling direction; the first self-locking device and the second self-locking device both support the rotating assembly; when the first self-locking device is contacted with the top of the arch bridge, the first self-locking device is separated from the rotating assembly, the rotating assembly is contacted with the pushing device and can rotate under the pushing force opposite to the advancing direction and press down the second self-locking device, and the rotating position can be positioned by the matching of the first self-locking device and the arch bridge, so that the rotating assembly is prevented from being misplaced; when the pushing device is separated from the rotating assembly, the second self-locking device resets and reversely pushes the rotating assembly so as to enable the rotating assembly to rotate by a preset angle relative to the initial state when the rotating assembly is static.
Description
Technical Field
The invention relates to the technical field of rotating mechanisms, in particular to a rotating mechanism with a controllable rotating angle.
Background
In the prior art, when paint spraying is carried out on a workpiece, the workpiece is mostly arranged on a rotating mechanism, and after one side of the workpiece is sprayed, the rotating mechanism rotates to spray the other side of the workpiece. The existing rotating mechanism adopts a chain and chain wheel form, namely a rotating shaft which is used for placing a workpiece and drives the workpiece to rotate through self rotation is arranged on the chain wheel, the rotating shaft runs to a rotating position for turning over the workpiece to stop, a cylinder drives a chain to further stir the chain wheel, so that the rotation of a fixed angle is completed, for example, after one surface of the workpiece is sprayed in some fixed occasions, the workpiece needs to be rotated by 90 degrees to spray the other surface, so that the rotating mechanism needs to provide a 90-degree rotating angle, but in the operation process of the rotating mechanism, because the running precision of the chain wheel is not high, when the chain wheel stops moving, the stopping position of the chain wheel has certain deviation, namely the chain wheel cannot be completely positioned in the rotating position, the requirement on the matching precision of the chain and the chain wheel is high, the required precision cannot be completely achieved in reality, and finally the rotating angle of the rotating mechanism is inaccurate and cannot reach the preset angle.
Accordingly, there is a need for improvements and developments in the art.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rotating mechanism with a controllable rotating angle, aiming at solving the problem of low rotating angle accuracy rate of the rotating mechanism in the prior art.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a rotary mechanism with a controllable rotation angle comprises two arch bridges, a conveying chain, a carrying vehicle, a channel, a rack and a pushing device, wherein the two arch bridges are symmetrically arranged, the carrying vehicle is arranged on the conveying chain, the channel is arranged between the two arch bridges and is used for the conveying chain to pass through, the rack is arranged on one side of each arch bridge, and the pushing device is arranged on the rack; the carrier is sequentially provided with a first self-locking device, a rotating assembly and a second self-locking device along the traveling direction; the first self-locking device and the second self-locking device support the rotating assembly; when the first self-locking device is in contact with the top of the arch bridge, the first self-locking device is separated from the rotating assembly, the rotating assembly is in contact with the pushing device and can rotate under the thrust opposite to the advancing direction and press down the second self-locking device; when the pushing device is separated from the rotating assembly, the second self-locking device resets and reversely pushes the rotating assembly, so that the rotating assembly rotates by a preset angle relative to the initial state when being static.
The rotating assembly comprises a sleeve arranged on the carrier and provided with an opening at the top, a rotating shaft which is inserted into the sleeve along the vertical direction from the opening and can rotate relative to the sleeve, a carrier frame, a shifting fork assembly and a limiting assembly, wherein the carrier frame, the shifting fork assembly and the limiting assembly are sequentially arranged along the rotating shaft from top to bottom, the shifting fork assembly is used for being in contact with the pushing device, and the limiting assembly is used for being in contact with the first self-locking device and the second self-locking device respectively to limit the rotating angle of the rotating shaft.
The rotating mechanism with the controllable rotating angle is characterized in that the shifting fork assembly comprises four shifting forks which are averagely arranged along the circumference of the rotating shaft; the central axes of the four shifting forks are positioned in the same horizontal plane.
The rotating mechanism with the controllable rotating angle comprises a rotating shaft, wherein an included angle formed between one of four shifting forks and a plane where a central axis of the rotating shaft is located is 60 degrees at the beginning; the shifting fork is used for being in contact with the pushing device; the plane is perpendicular to the advancing direction, and the plane is located between the shifting fork and the first self-locking device.
The rotating mechanism with the controllable rotating angle comprises a limiting assembly and a rotating mechanism, wherein the limiting assembly comprises a bottom plate and a plurality of rolling assemblies, the bottom plate is sleeved on the rotating shaft and can rotate along with the rotating shaft, and the rolling assemblies are arranged on the bottom plate along the circumferential direction of the bottom plate; the base plate is square and initially two of the sides of the base plate are perpendicular to the direction of travel.
The rotating mechanisms with controllable rotating angles are provided with 4 rolling assemblies which are respectively arranged at four corners of the bottom plate; the rolling assembly comprises a connecting shaft which penetrates through the bottom plate along the vertical direction and a roller which is sleeved on the connecting shaft and can rotate along the horizontal direction; the rollers are positioned below the bottom plate, and two rollers are initially in contact with the second self-locking device.
The rotating mechanism with the controllable rotating angle comprises a bracket vertically arranged on the carrier and a rotating part arranged on the bracket and capable of rotating along the bracket; the rotational member is parallel to the direction of travel; one end of the rotating part is positioned between the rotating assembly and the bracket and can be contacted with the bottom plate, and the other end of the rotating part is connected with the connecting rod; the connecting rod is perpendicular to the advancing direction, and two ends of the connecting rod can be respectively contacted with the two arch bridges.
The rotating mechanism with the controllable rotating angle is characterized in that the second self-locking device comprises L-shaped supporting frames, a limiting shaft and a balancing weight, wherein the L-shaped supporting frames, the limiting shaft and the balancing weight are respectively positioned on two sides of the sleeve; the L-shaped support frame comprises a horizontal part and a vertical part which are connected; two ends of the limiting shaft are respectively connected with the two vertical parts; the balancing weight is respectively connected with the two horizontal parts; the bracket is positioned between the sleeve and the balancing weight; the stopper shaft may be in contact with the drum.
The rotating mechanism with the controllable rotating angle is characterized in that the pushing device comprises a rack parallel to the advancing direction, a driving device arranged on the rack and a deflector rod; one end of the deflector rod is connected with the driving device, and the other end of the deflector rod is suspended and can be contacted with the rotating assembly; the driving device is used for pushing the shifting lever to move towards the opposite direction of the advancing direction.
The rotating mechanism with the controllable rotating angle is characterized in that a guide device is further arranged on the rack and connected with the shifting lever.
Has the advantages that: in the invention, when the first self-locking device is contacted with the top of the arch bridge, the first self-locking device is separated from the rotating assembly, the rotating assembly is contacted with the pushing device, and can rotate under the thrust opposite to the advancing direction and press down the second self-locking device; when the pushing device is separated from the rotating assembly, the second self-locking device resets and reversely pushes the rotating assembly, so that the rotating assembly rotates by a preset angle relative to the initial state when being static.
Drawings
Fig. 1 is a schematic structural view of the rotation mechanism with controllable rotation angle in the present invention;
FIG. 2 is a perspective view of the first and second self-locking devices of the present invention initially installed in cooperation with the rotating assembly;
FIG. 3 is a side view of the first and second self-locking devices of the present invention initially installed in cooperation with the rotating assembly;
FIG. 4 is a top view of the first and second locking devices of the present invention initially installed in cooperation with the rotating assembly;
FIG. 5 is a reference view of the initial use of the rotary assembly of the present invention;
fig. 6 is a schematic view of the structure of the rotating member in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below by referring to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Please refer to FIG. 1-FIG. 6. The invention provides a rotating mechanism with a controllable rotating angle, which comprises two arch bridges 1, a conveying chain, a carrier 11, a channel, a rack 2 and a pushing device, wherein the two arch bridges 1 are symmetrically arranged, the carrier 11 is arranged on the conveying chain, the channel is arranged between the two arch bridges 1 and is used for the conveying chain to pass through, the rack 2 is arranged on one side of each arch bridge 1, and the pushing device is arranged on the rack 2; the carrier 11 is sequentially provided with a first self-locking device, a rotating assembly and a second self-locking device along the traveling direction (as shown by arrows in fig. 1); the first self-locking device and the second self-locking device both support the rotating assembly; when the first self-locking device is in contact with the top of the arch bridge 1, the first self-locking device is separated from the rotating assembly, the rotating assembly is in contact with the pushing device, and can rotate under the thrust opposite to the advancing direction and press down the second self-locking device; when the pushing device is separated from the rotating assembly, the second self-locking device resets and pushes the rotating assembly reversely, so that the rotating assembly rotates by a preset angle relative to the initial state when the rotating assembly is static.
The arch bridge 1 is parallel to the direction of travel; the rotating assembly is used for fixedly mounting a workpiece, the transporting vehicle 11 is used for placing the rotating assembly, the conveying chain is used for conveying the transporting vehicle 11, the transporting vehicle 11 is conveyed from a previous station to a rotating station (the rotating station refers to a processing station which needs to rotate the workpiece by a preset angle so as to facilitate subsequent processing modes such as spraying the workpiece), and the transporting vehicle 11 is conveyed to a next station after the rotation is completed. When the transmission chain is not in a rotating position, the first self-locking device and the second self-locking device respectively prop against the rotating assembly from two sides of the rotating assembly along the direction parallel to the advancing direction, so that the rotating assembly is prevented from generating rotary displacement due to bumping in the transmission process of the transmission chain.
The arch bridge 1 is not only used for separating the first self-locking device from the rotating assembly when in contact with the first self-locking device, but also not limiting the rotating assembly, so as to provide a displacement space for the rotation of the rotating assembly, but also used for positioning the rotation position of the rotating assembly, namely, when the conveying chain conveys the carrier 11 to the first self-locking device to be in contact with the top of the arch bridge 1, the conveying chain stops, at the moment, the pushing device just contacts with the rotating assembly, pushes the rotating assembly to rotate, and finally the rotating assembly can rotate by a preset angle under the cooperation of the second self-locking device and the rotating assembly.
As shown in fig. 5, the rotating assembly includes a sleeve 3 disposed on the transporting vehicle 11 and having an open top, a rotating shaft 31 inserted into the sleeve 3 from the open top in a vertical direction and rotatable with respect to the sleeve 3, a carrier frame 32 sequentially disposed along the rotating shaft 31 from top to bottom, a fork assembly for contacting the pushing device, and a limiting assembly for contacting the first self-locking device and the second self-locking device respectively to limit a rotation angle of the rotating shaft 31.
The carrier 32, the fork assembly all with pivot 31 fixed connection, pivot 31 with sleeve 3 rotates and is connected, works as pusher promotes the fork assembly, the fork assembly drives pivot 31 is rotatory, thereby drives carrier 32 is rotatory. The rotation angle of the rotating shaft 31 is determined by the cooperation of the limiting assembly, the shifting fork assembly and the second self-locking device; the limiting component is fixedly connected with the rotating shaft 31, and when the rotating shaft 31 rotates, the limiting component is driven to rotate; when the rotation is not needed, the first self-locking device and the second self-locking device are both contacted with the limiting assembly, and the limiting assembly cannot rotate, so that the rotation of the rotating shaft 31 is avoided; when the first self-locking device is separated from the limiting assembly, the limiting assembly can rotate, is always in contact with the second self-locking device in the rotating process of the limiting assembly, and applies force to the second self-locking device, so that the second self-locking device generates displacement to provide a displacement space for the rotation of the limiting assembly; when the pushing device is separated from the shifting fork assembly, the thrust of the second self-locking device disappears due to the fact that the second self-locking device resets, the limiting assembly is pushed to the direction opposite to the rotating direction to drive the rotating shaft 31 to retreat by a certain angle until the second self-locking device retreats to the initial state and contacts with the limiting assembly, the rotating angle of the limiting assembly is a preset angle when the second self-locking device is in the initial state, and the rotating shaft 31 drives the rotating angle of the carrier 32 to be a preset angle.
The fork assembly includes four forks 33 equally arranged along the circumference of the rotating shaft 31; the center axes of the four shift forks 33 are located in the same horizontal plane. The shift fork 33 is the cylinder, four in the shift fork 33, wherein the central axis of two shift forks is located a straight line, and the central axis of two other shift forks is located a straight line, four the cross is constituteed to the central axis of shift fork 33, and cross central cross point is located the central axis of pivot 31 is last. One end of the shifting fork 33 is fixedly connected with the rotating shaft 31, and the other end of the shifting fork is suspended.
In a preferred embodiment, the predetermined angle that the rotating assembly needs to rotate in the rotating position is 90 °, and initially, an included angle α between one of the four shifting forks 33 and a plane where the central axis of the rotating shaft 31 is located is 60 °; the shifting fork is used for being in contact with the pushing device; the plane is perpendicular to the advancing direction, and the plane is located between the shifting fork and the first self-locking device.
The limiting assembly comprises a bottom plate 34 which is sleeved on the rotating shaft 31 and can rotate along with the rotating shaft 31, and a plurality of rolling assemblies which are arranged on the bottom plate 34 along the circumferential direction of the bottom plate 34; the base plate 34 is square and initially both of the sides of the base plate 34 are perpendicular to the direction of travel. The center of the bottom plate 34 is located on the central axis of the rotating shaft 31; the number of the rolling assemblies is 4, and the rolling assemblies are respectively arranged at four corners of the bottom plate 34; the rolling assembly comprises a connecting shaft which penetrates through the bottom plate 34 along the vertical direction, and a roller 35 which is sleeved on the connecting shaft and can rotate along the horizontal direction; the rollers 35 are located below the base plate 34 and initially two of the rollers are in contact with the second self-locking means. One end of the connecting shaft is fixedly connected with the bottom plate 34, the other end of the connecting shaft is positioned below the bottom plate 34 and suspended in the air, the roller 35 is sleeved on the connecting shaft, the rotating shaft 31 drives the bottom plate 34 to rotate when rotating, and the connecting shaft rotates along with the bottom plate 34; the drum 35 is rotatable in a horizontal direction with respect to the connecting shaft.
As shown in fig. 2 to 4, the first self-locking device includes a bracket 4 vertically disposed on the cart 11, a rotating member 41 disposed on the bracket 4 and rotatable along the bracket 4; the rotary member 41 is parallel to the direction of travel; one end of the rotating component 41 is positioned between the rotating component and the bracket 4 and can be contacted with the bottom plate 34, and the other end is connected with a connecting rod 42; the link 42 is perpendicular to the traveling direction, and both ends thereof may be in contact with the two arch bridges 1, respectively.
Preferably, the bracket 4 is U-shaped, the opening of the bracket is downward, and a connecting piece is connected between two inner walls of the bracket 4 and is perpendicular to the advancing direction; the connecting piece penetrates through the rotating piece 41 and limits the rotating piece 41 between two side walls of the bracket 4; the rotation member 41 is rotatable about the connection member. Furthermore, one end of the rotating component 41 is located between the bracket 4 and the bottom plate 34, and the other end of the rotating component is located at the end of the bracket 4 away from the bottom plate 34 and is connected with the connecting rod 42. The support 4 is further provided with two support arms 43 extending towards one side far away from the drilling and rotating assembly, the two support arms 43 are respectively connected with two side walls of the support 4, the support arms 43 are parallel to the advancing direction, and initially, one end of the rotating part 41 positioned between the bottom plate 34 and the support 4 supports the bottom plate 34, and the connecting rod 42 is arranged on the support arms 43. As shown in fig. 3 and 6, the rotating member 41 includes a first horizontal portion 411 and an inclined portion 412 connected to the first horizontal portion 411, and one end of the inclined portion 412, which is far from the first horizontal portion 411, is connected to the link 42. The first horizontal portion 411 and the inclined portion 412 are both flat, an included angle between an upper surface of the first horizontal portion 411 and an upper surface of the inclined portion 412 is 145 °, an included angle between a lower surface of the first horizontal portion 411 and a lower surface of the inclined portion 412 is 125 °, and the inclined portion 412 is inclined downward with respect to the first horizontal portion 411.
The distance between the two arch bridges 1 is smaller than the length of the link 42, so that when the truck 11 moves to the arch bridge 1, both ends of the link 42 can contact the arch bridge 1, and along with the movement of the truck in the traveling direction, the link 42 slides along the arch bridge 1, the height of the link 42 rises, and when the link 42 moves to the top of the arch bridge 1, that is, the highest position of the arch bridge 1, the truck 11 reaches a rotation position and stops moving, waiting for the rotation operation of the rotating assembly. When the connecting rod 42 rises along the arch bridge 1, one end of the rotating member 41 rises, and the rotating member 41 rotates around the connecting member, so that the end of the rotating member that supports the bottom plate 34 falls and is separated from the bottom plate 34, thereby providing a displacement space for the rotation of the limiting assembly.
The second self-locking device comprises an L-shaped support frame 5, a limiting shaft 53 and a balancing weight 54 which are respectively positioned at two sides of the sleeve 3; the L-shaped support frame 5 comprises a horizontal part 52 and a vertical part 51 which are connected; two ends of the limiting shaft 53 are respectively connected with the two vertical parts 51; the balancing weights 54 are respectively connected with the two horizontal parts 52; the support 4 is located between the sleeve 3 and the counterweight 54; the stopper shaft 53 may contact the drum 35.
The two L-shaped support frames 5 are symmetrical, and the vertical part 51 is positioned on one side of the sleeve 3 far away from the first self-locking device; the horizontal part 52 is fixedly connected with the bottom of the vertical part 51 and extends to one side of the bracket 4 away from the bottom plate 34; the horizontal part 52 is rotatably connected with the sleeve 3, when the L-shaped support frame 5 rotates, the vertical part 51 rotates downwards, and one end of the horizontal part 52 far away from the vertical part 51 rotates upwards; the counterweight block 54 is located between the two horizontal portions 52 and is respectively connected with the two horizontal portions 52; the horizontal portion 52 is parallel to the travel direction. The link 42 is vertically higher than the horizontal portion 52; the limiting shaft 53 is positioned between the two vertical parts 51 and is respectively connected with the two vertical parts 51; initially, in the vertical direction, the vertical portion 51 is located below the bottom plate 34, and the limiting shaft 53 contacts with the roller 35 and supports against the roller 35, so as to limit the limiting assembly, prevent the limiting assembly from rotating, and prevent the rotating assembly from rotating when the rotating assembly is not in the rotating position.
The rotating mechanism with the controllable rotating angle has the following working process: initially, the rotating member 41 supports the bottom plate 34, the vertical portion 51 is kept vertical, the horizontal portion 52 is kept vertical, and the limiting shaft 53 is simultaneously contacted with two rollers; when the connecting rod 42 moves to the highest position of the arch bridge 1 along with the conveying chain, the conveying chain stops operating, the rotating piece 41 supports one end of the bottom plate 34 to descend and separate from the bottom plate 34, the pushing device is in contact with the shifting fork 33, the pushing device pushes the shifting fork 33 in the direction opposite to the advancing direction at the moment, the rotating shaft 31 rotates and simultaneously drives the bottom plate 34 to rotate, and the roller 35 in contact with the limiting shaft 53 rotates under the thrust of the limiting shaft 53 while revolving around the rotating shaft 31; because the bottom plate 34 is square, when only one sleeve 3 contacts the limiting shaft 53, the vertical part 51 moves downwards under the pushing action of the roller 35, the horizontal part 52 rotates, the balancing weight 54 tilts, and the distance between the limiting shaft 53 and the sleeve 3 increases; in the pushing process of the pushing device, the limiting shaft 53 is in contact with two rollers from the initial state to the state of being in contact with only one roller, and then is in contact with the two rollers; before the pushing device is separated from the shifting fork 33, the rotating shaft 31 can still continue to rotate, namely the limiting shaft 53 is changed into contact with one roller, at this moment, an included angle between the side surface of the bottom plate 34 and the limiting shaft 53 is not large, when the pushing device is separated from the shifting fork, the bottom plate 34 loses the acting force of the rotating shaft 31, the second self-locking device resets, the vertical part 51 resets, the limiting shaft 53 ascends, the distance between the limiting shaft 53 and the sleeve 3 is reduced, the bottom plate 34 is pushed under the acting force opposite to the direction in which the pushing device pushes the shifting fork 33 to rotate in the resetting process of the limiting shaft 53, the bottom plate 34 reversely rotates until the two rollers are contacted with the limiting shaft 53, therefore, the side edge of the bottom plate 34 adjacent to the limiting shaft 53 initially rotates to be parallel to the advancing direction, the bottom plate 34 rotates 90 degrees relative to the initial state, the rotating shaft 31 rotates 90 degrees, and the shelf rotates 90 degrees.
As shown in fig. 1, the pushing device includes a frame 2 parallel to the traveling direction, a driving device provided on the frame 2, and a lever 22; one end of the shift lever 22 is connected with the driving device, and the other end of the shift lever is suspended and can be contacted with the rotating component; the driving device is used for pushing the shift lever 22 to move in the direction opposite to the advancing direction.
Preferably, the driving device is a cylinder 21, a piston rod of the cylinder 21 is connected to the shift lever 22, the shift lever 22 and the cylinder 21 are sequentially arranged along the advancing direction, and when the piston rod of the cylinder 21 acts, the shift lever 22 can push the shift fork 33 in a direction opposite to the advancing direction. When the connecting rod 42 contacts the top of the arch bridge 1, the suspended end of the shift lever 22 can contact a shift fork.
The frame 2 is further provided with a guiding device, and the guiding device is connected with the shifting rod 22. The guide device comprises a guide rail 23 arranged on the frame 2 and a guide piece 24 which is clamped and connected with the guide rail 23 and can slide back and forth along the guide rail 23, and the guide piece 24 is connected with the shift lever 22; the guide rail 23 is parallel to the direction of travel.
When pivot 31 rotates 90, just pusher breaks away from behind the shift fork 33, the transfer chain starts work, continues along the direction of travel motion, connecting rod 42 is followed the highest department of arched bridge 1 moves to the lowest department and breaks away from arched bridge 1, rotate 41 and reset and the top is held bottom plate 34, at this moment first self-lock device with second self-lock device is right again spacing subassembly top is held spacingly, avoids its rotation, thereby will pivot 31 is fixed in the position after rotating predetermined angle.
In summary, the present invention provides a rotation mechanism with a controllable rotation angle, which includes two arch bridges symmetrically arranged, a transmission chain, a transport vehicle arranged on the transmission chain, a channel arranged between the two arch bridges for the transmission chain to pass through, a frame arranged on one side of the arch bridges, and a pushing device arranged on the frame; the carrier is sequentially provided with a first self-locking device, a rotating assembly and a second self-locking device along the traveling direction; the first self-locking device and the second self-locking device both support the rotating assembly; when the first self-locking device is in contact with the top of the arch bridge, the first self-locking device is separated from the rotating assembly, the rotating assembly is in contact with the pushing device and can rotate under the thrust opposite to the advancing direction and press down the second self-locking device; when the pushing device is separated from the rotating assembly, the second self-locking device resets and reversely pushes the rotating assembly, so that the rotating assembly rotates by a preset angle relative to the initial state when being static.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (4)
1. A rotary mechanism with a controllable rotation angle is characterized by comprising two arch bridges, a conveying chain, a carrying vehicle, a channel, a rack and a pushing device, wherein the two arch bridges are symmetrically arranged, the carrying vehicle is arranged on the conveying chain, the channel is arranged between the two arch bridges and is used for the conveying chain to pass through, the rack is arranged on one side of each arch bridge, and the pushing device is arranged on the rack; the carrier is sequentially provided with a first self-locking device, a rotating assembly and a second self-locking device along the traveling direction; the first self-locking device and the second self-locking device both support the rotating assembly; when the first self-locking device is contacted with the top of the arch bridge, the first self-locking device is separated from the rotating assembly, the rotating assembly is contacted with the pushing device, and the rotating assembly can rotate under the thrust opposite to the advancing direction and press down the second self-locking device; when the pushing device is separated from the rotating assembly, the second self-locking device resets and reversely pushes the rotating assembly so as to enable the rotating assembly to rotate by a preset angle relative to the initial state when the rotating assembly is static; the rotating assembly comprises a sleeve arranged on the carrier and provided with an opening at the top, a rotating shaft which is inserted into the sleeve from the opening in the vertical direction and can rotate relative to the sleeve, a carrier rack, a shifting fork assembly and a limiting assembly, wherein the carrier rack, the shifting fork assembly and the limiting assembly are sequentially arranged along the rotating shaft from top to bottom, the shifting fork assembly is used for being in contact with the pushing device, and the limiting assembly is used for being in contact with the first self-locking device and the second self-locking device respectively so as to limit the rotating angle of the rotating shaft; the limiting assembly comprises a bottom plate which is sleeved on the rotating shaft and can rotate along with the rotating shaft, and a plurality of rolling assemblies which are arranged on the bottom plate along the circumferential direction of the bottom plate; the bottom plate is square, and two side edges of the bottom plate are vertical to the advancing direction initially; the number of the rolling assemblies is 4, and the rolling assemblies are respectively arranged at four corners of the bottom plate; the rolling assembly comprises a connecting shaft which penetrates through the bottom plate along the vertical direction and a roller which is sleeved on the connecting shaft and can rotate along the horizontal direction; the rollers are positioned below the bottom plate, and two rollers are initially contacted with the second self-locking device; the first self-locking device comprises a bracket vertically arranged on the carrier and a rotating piece which is arranged on the bracket and can rotate along the bracket; the rotating member is parallel to the direction of travel; one end of the rotating part is positioned between the rotating assembly and the bracket and can be contacted with the bottom plate, and the other end of the rotating part is connected with the connecting rod; the connecting rod is vertical to the advancing direction, and two ends of the connecting rod can be respectively contacted with the two arch bridges; the second self-locking device comprises an L-shaped support frame, a limiting shaft and a balancing weight, wherein the L-shaped support frame, the limiting shaft and the balancing weight are respectively positioned on two sides of the sleeve; the L-shaped support frame comprises a horizontal part and a vertical part which are connected with each other; two ends of the limiting shaft are respectively connected with the two vertical parts; the balancing weight is respectively connected with the two horizontal parts; the bracket is positioned between the sleeve and the balancing weight; the limiting shaft can be contacted with the roller; at the beginning, the rotating piece supports against the bottom plate, the vertical part is kept vertical, the horizontal part is kept horizontal, and the limiting shaft is simultaneously contacted with the two rollers; the pushing device comprises a rack parallel to the advancing direction, a driving device arranged on the rack and a shifting lever; one end of the deflector rod is connected with the driving device, and the other end of the deflector rod is suspended and can be contacted with the rotating assembly; the driving device is used for pushing the shifting lever to move in the direction opposite to the advancing direction.
2. The controllable angle of rotation rotary mechanism of claim 1, wherein the fork assembly comprises four forks disposed evenly along the circumference of the shaft; the central axes of the four shifting forks are positioned in the same horizontal plane.
3. The rotary mechanism with controllable rotation angle according to claim 2, wherein initially, an included angle between one of the four shifting forks and a plane where the central axis of the rotating shaft is located is 60 °; the shifting fork is used for being in contact with the pushing device; the plane is perpendicular to the advancing direction, and the plane is located between the shifting fork and the first self-locking device.
4. The controllable rotary angle rotary mechanism of claim 1, wherein the frame further comprises a guide device, and the guide device is connected to the shift lever.
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| CN201710942627.2A CN107537717B (en) | 2017-10-11 | 2017-10-11 | Rotating mechanism with controllable rotating angle |
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| CN201710942627.2A CN107537717B (en) | 2017-10-11 | 2017-10-11 | Rotating mechanism with controllable rotating angle |
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| CN107537717B true CN107537717B (en) | 2022-10-04 |
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| CN110954135A (en) * | 2019-12-11 | 2020-04-03 | 小狗电器互联网科技（北京）股份有限公司 | Tool for detecting rotation of IMU (inertial measurement Unit) assembly and IMU assembly rotation detection method |
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| CN107537717A (en) | 2018-01-05 |
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