CN210047971U - Wheel type conveying line - Google Patents

Abstract

The utility model discloses a wheeled transfer chain, including the frame, wait to be provided with multirow deflection wheel such as in the frame, the axis of all deflection wheels is parallel to each other and is on a parallel with the horizontal plane, and every deflection wheel can set up on a mounting bracket that is located the frame around its axis rotation, and every row deflection wheel and drive roller laminating, the drive roller just with the lower semicircle contact of deflection wheel the drive roller receives ascending elasticity and with the laminating of drive roller self-adaptation or the last semicircle contact of drive roller and deflection wheel and receive ascending elasticity and with the laminating of drive roller self-adaptation, the rotation of drive roller under the drive of first power supply and through frictional force drive deflection wheel rotation. This scheme design is exquisite, receives ascending elasticity through making deflection wheel or drive roller so that the deflection wheel remains throughout with the drive roller laminating to after wearing and tearing or when the mounted position precision is not good, realize self-adaptation adjustment, the effectual rotation of having guaranteed between the two has improved the stability of carrying.

Description

Wheel type conveying line

Technical Field

The utility model belongs to the technical field of conveying equipment and specifically relates to wheeled transfer chain.

Background

The kind of present sorting machine is more, and the sorting efficiency difference of different sorting machines is also very big, and common automatic sorting machine has band conveyer, roller conveyer, alternately belt letter sorting, slider letter sorting, deflection wheel letter sorting etc..

The deflection wheel wire feeding is a device which conveys and turns articles on the deflection wheel wire feeding through the rotation and horizontal rotation of a plurality of independent spheres or wheels, one of the existing sphere or wheel rotation driving modes is friction driving, namely a driving roller is in contact with the spheres or wheels, and the driving roller rotates and drives the spheres or wheels to rotate through friction force.

The problem with this configuration is that; on one hand, due to continuous friction between the driving roller and the ball body or the wheel, the contact surface of the driving roller and the ball body or the wheel is easy to wear, so that the fit tightness of the driving roller and the ball body or the wheel is reduced, and even the driving roller and the ball body or the wheel cannot be effectively contacted; on the other hand, the mounting precision is insufficient for the contact between the driving roller and the ball or the wheel, which results in that the ball or the wheel cannot be effectively driven to rotate, and the conveying effectiveness and stability are seriously affected.

In addition, in the existing driving structure for driving the deflection wheel to horizontally rotate, a synchronous wheel and a synchronous belt or a gear transmission mode is often used, but in the transmission mode of the synchronous belt and the synchronous wheel, the synchronous belt is easy to break due to long-term use, so that the use stability and the service life of equipment are influenced, a certain space requirement is required for installation of the synchronous belt, the design difficulty of other structures is increased, and meanwhile, the maintenance cost is high; in the gear transmission mode, a plurality of gears are needed to be meshed, the transmission is carried out through a plurality of transmission rods, the action consistency among the transmission rods cannot be guaranteed frequently, the problem of tooth jumping of the gears easily occurs, once the tooth jumping occurs, a deflection ball in a certain area cannot deflect, the working failure of the whole conveying line is caused, and the conveying stability is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a wheeled transfer chain in order to solve the above-mentioned problem that exists among the prior art.

The purpose of the utility model is realized through the following technical scheme:

wheeled transfer chain, which comprises a frame, wait to be provided with multirow deflection wheel such as in the frame, the axis of all deflection wheels is parallel to each other and is on a parallel with the horizontal plane, and every deflection wheel can set up on an installation bracket that is located the frame around its axis rotation ground, and every row deflection wheel and drive roller laminating, the drive roller with the lower semicircle contact of deflection wheel just the drive roller receive ascending elasticity and with drive roller self-adaptation laminating or the drive roller with the last semicircle contact of deflection wheel just the deflection wheel receives ascending elasticity and with drive roller self-adaptation laminating, the rotation of drive roller is under the drive of first power supply and through frictional force drive deflection wheel rotation, the installation bracket can set up on the brace table of frame and by the steering device drive rotation ground.

Preferably, in the wheel type conveying line, the deflection wheels in adjacent rows are arranged in a staggered manner, the circumferential surface of each deflection wheel is in a shape that the diameter of the middle area is large and the diameter of the two ends is small, and the area between the middle area and the two ends is an inclined surface or an outward convex arc surface or a curved surface.

Preferably, in the wheel type conveying line, the deflection wheels are arranged in even number rows, two rows of deflection wheels are in one group, and one group of deflection wheels is driven by one driving roller.

Preferably, in the wheel type conveying line, the driving rollers are connected through a belt transmission mechanism or a chain wheel transmission mechanism and realize synchronous and same-direction rotation, and one of the driving rollers is connected with the first power source.

Preferably, in the wheeled conveying line, the mounting bracket includes a support, a positioning groove is formed in the support, a support body is movably clamped in the positioning groove, a torsion spring is arranged between the support body and the support, the torsion spring is deformed under the pressure of the driving roller in a normal state and can drive the support body to move upwards relative to the positioning groove, and a deflection wheel is rotatably erected on the support body.

Preferably, in the wheel conveyor line, the support table includes a support plate and a support body located below the support plate.

Preferably, in the wheel-type conveying line, the steering device includes a second power source with a fixed position, the second power source is connected with at least one driving plate through a crank-link transmission mechanism or a belt transmission mechanism or a gear transmission mechanism, and each driving plate is pivotally connected with an eccentric connecting piece at the bottom of the mounting frame of one row of deflection wheels.

Preferably, in the wheel type conveying line, two adjacent rows of deflection wheels are driven to steer by one steering device, and second power sources of a plurality of steering devices are fixed on a support plate erected on the rack.

Preferably, in the wheeled conveying line, the second power source drives the mounting frame through a crank-link transmission mechanism, the crank-link transmission mechanism comprises a first link connected with the second power source, a free end pivot of the first link is connected with one end of a second link, the other end pivot of the second link is connected with a connecting shaft extending longitudinally, a connecting member is arranged on the connecting shaft, and the connecting member connects the two drive plates.

Preferably, in the wheel-type conveying line, the second power source is a motor and is connected with the crank-link transmission mechanism through an expansion sleeve or a coupling.

The utility model discloses technical scheme's advantage mainly embodies:

this scheme design is exquisite, and simple structure receives ascending elasticity through making the deflection pulley to can make the deflection pulley remain throughout with the drive roller laminating, and when wearing and tearing back or mounted position precision are not good, still can make the deflection pulley remove to the direction of turning to the roller through elasticity, thereby realize self-adaptation adjustment, the effectual rotation of having guaranteed between the two has improved the stability of carrying.

The outer contour design of the deflection wheel can effectively increase the contact area between the deflected deflection wheel and the driving roller, thereby ensuring that enough friction force is generated between the deflected deflection wheel and the driving roller to realize driving, improving the stability of friction driving, being favorable for reducing the gap between the deflection wheels due to the staggered distribution of the deflection wheels, leading the deflection wheels to have larger contact area with an object, accelerating the conveying and improving the stability of the object in the conveying process, and realizing the unification of safety and timeliness.

This scheme adopts special mounting bracket structure, and the self-adaptation that can effectual realization deflection wheel removes so that the abundant laminating of deflection wheel and drive roller, very big improvement deflection wheel driven stability to this structure can self-adaptation adjustment, uses in a flexible way.

The supporting table of the scheme adopts a bottom supporting structure, provides sufficient support for the supporting plate, effectively solves the problem that the existing structure is easy to cause deformation of the supporting plate, ensures the stability of the whole structure and the accuracy of a conveying position, and effectively improves the effectiveness and the reliability of conveying.

This scheme adopts crank connecting rod transmission structure, has effectually avoidd belt drive and gear drive's problem to two rows of deflection wheels are driven by two synchronous movement's transfer line, the effectual uniformity of having guaranteed the action, have improved the stability and the validity that the deflection wheel turned to, and the structure is simplified more simultaneously, easily realizes.

The power source of the steering device does not apply load to the support table, so that the load borne by the support plate is greatly reduced, and the possibility of deformation of the support plate is reduced.

The crank connecting rod type transmission mechanism is connected by the joint bearing, so that accumulated errors in processing and installation can be effectively absorbed, the assembly is convenient, and the reliability of transmission can be effectively guaranteed.

The connection of the motor and the crank connecting rod transmission structure is realized by adopting the shaft coupling or the shaft sleeve, and the separation of the motor and the crank connecting rod transmission structure can be effectively realized under the condition of material clamping, so that the overload damage of the motor is avoided, and the safety and the stability of the operation of equipment are ensured.

Drawings

Fig. 1 is a top view of the present invention (a part of the base frame and the driving roller structure are hidden in the figure, and only the supporting plate of the supporting table is shown in the figure);

fig. 2 is a side view of the present invention;

FIG. 3 is a schematic view of a deflection wheel of the present aspect;

fig. 4 is a perspective view of the mounting bracket of the present invention;

fig. 5 is a schematic view of the crank link transmission structure of the present invention;

FIG. 6 is a bottom view of the present invention (with the structure of the steering device hidden in the drawing)

Fig. 7 is a sectional view of the magnetic transmission coupling of the present invention.

Detailed Description

Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are merely exemplary embodiments for applying the technical solutions of the present invention, and all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the scope of the present invention.

In the description of the embodiments, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.

The following explains the wheeled conveying line disclosed by the present invention with reference to the accompanying drawings, as shown in fig. 1, the wheeled conveying line includes a frame 1, the frame 1 includes a support frame 11 and a frame 12 located on the support frame 11, a baffle 13 is fixed around the frame 12, and in order to facilitate the movement of the wheeled conveying line, the bottom of the support frame 11 may further be provided with four universal wheels (not shown in the drawings) distributed in a rectangular shape, the universal wheels have a locking structure, and the universal wheels having the locking structure are known technology and are not described again; and a pressure sensor (not shown) for weighing is also arranged between the support frame 11 and the frame 12.

As shown in fig. 1 and 2, a plurality of rows of deflection wheels 2 are disposed at the same height on the top of a frame 12 of the machine frame 1, the axes of all the deflection wheels 2 are parallel to each other and parallel to the horizontal plane, each deflection wheel 2 is disposed on a mounting frame 3 in a manner of rotating around the axis thereof, for example, each deflection wheel 2 is connected to the mounting frame 3 through a bearing, the mounting frame 3 on which each row of deflection wheels 2 is disposed on a support table 4 fixed on the machine frame 1, and a protective plate (not shown) for partially leaking the deflection wheels 2 is further disposed on the frame 12.

Specifically, the deflection wheel 2 may be a wheel-shaped structure as shown in fig. 1 or a spherical structure as shown in fig. 2, and preferably, the wheel-shaped structure is adopted, because the circumferential surface of the deflection wheel 2 is in line contact with the object when in contact with the object, and can better support the object compared with the surface contact of the spherical structure; meanwhile, the width of the wheel-shaped structure is narrower than that of the spherical structure, so that the distance between the contact positions of the article and the two deflection wheels 2 can be further reduced, and the stability of the article is ensured; moreover, as shown in fig. 3, the circumferential surface 21 of the deflection wheel 2 is in a shape that the middle area 211 has a large diameter and the two ends have a small diameter, and the area 212 between the middle area and the two ends is an inclined surface or an outward-convex arc surface or a curved surface, so that the design can effectively ensure that the deflection wheel 2 has a sufficient contact area with a subsequent driving roller after the deflection wheel 2 swings, thereby ensuring that the deflection wheel 2 can be driven by friction.

Moreover, the gaps and the number of the deflection wheels 2 in one row and the number of rows of the deflection wheels 2 can be set according to specific application scenarios, and when the deflection wheels 2 are in a spherical structure, as shown in fig. 2, the positions of the deflection wheels 2 in adjacent rows correspond to that when the deflection wheels 2 are in a wheel-shaped structure, the deflection wheels 2 in adjacent rows are arranged in a staggered manner, so that the gaps between the deflection wheels 2 can be effectively reduced, the area of a hollow area of the whole conveying surface formed by the deflection wheels 2 can be reduced, and the stability of the articles on the deflection wheels 2 can be ensured.

As shown in fig. 2, the deflection wheels 2 are arranged in an even number of rows, and two rows are arranged in a group and are frictionally driven by a driving device 5, in detail, the driving device 5 includes driving rollers 51 located between the two rows of deflection wheels 2 and attached to the two rows of deflection wheels 2, the driving rollers 51 apply a certain downward pressure to the deflection wheels 2, the driving rollers 51 are rotatably mounted on a support 52 on a frame and are driven to rotate by a power source, the driving rollers 51 may be made of various known materials, such as a metal shaft coated with wear-resistant plastic, the power source (not shown) may be various known devices or structures capable of driving the rotation shaft to rotate, such as a mechanism formed by a single motor or a motor and gear transmission structure, a mechanism formed by a motor and belt transmission structure, or a mechanism formed by a motor and sprocket transmission structure, etc., are known in the art and will not be described in detail.

Moreover, each driving device 5 may have an independent power source, and preferably, a power source is shared by a plurality of driving devices 5, and the specific implementation manner is as follows:

as shown in fig. 2, one end of one driving roller in the plurality of driving devices 5 is connected with a power source, taking the outermost driving roller 511 as an example to be connected with the power source, and the other end of the driving roller 511 is connected with the same end of the driving roller 512 adjacent to the driving roller 511 through a belt pulley 52 and a belt 53 or a sprocket and a chain; the other end of the driving roller 512 is connected to the same phase end of another driving roller 513 adjacent thereto through a pulley and a belt or a sprocket and a chain, and so on, thereby driving the plurality of driving rollers 51 by one power source 54.

Moreover, since the position of the driving roller 51 is fixed, but as the driving roller 51 and the deflecting roller 2 wear for a long time, the contact between the two gradually decreases, and even a gap occurs, so that the driving roller 51 cannot drive the deflecting roller 2 to rotate by friction force, and thus the article cannot be conveyed, each deflecting roller 2 is always kept attached to the driving roller 51 by the upward elastic force.

Specifically, as shown in fig. 4, the mounting bracket 3 includes a support 31, the support 31 includes a connecting shaft 312, a support plate 313 above the connecting shaft 312, a positioning slot 311 is formed on the supporting plate 313, a supporting body 32 is clamped in the positioning slot 311 in a manner of moving up and down relative to the positioning slot 311, the supporting body 32 comprises two first vertical plates 321 symmetrically clamped on the supporting plate 31 and located outside the positioning slot 311, the two first vertical plates 321 are respectively connected with a limiting body 322 embedded in the positioning slot 311, a supporting shaft 323 is erected on the two supporting plates 31, both ends of the support shaft 323 are fixed to an approximately H-shaped mounting body 324, an upper surface of an intermediate plate 3241 of the mounting body 324 is a curved surface having the same curvature as that of the deflection pulley 2, a fixed shaft 325 is erected on two side plates 3242 of the mounting body 324, and the deflection wheel 2 is rotatably arranged on the fixed shaft 325; a torsion spring 33 is disposed between the support body 32 and the support seat 31, the torsion spring 33 is sleeved on the outer periphery of the support shaft 323, one free end of the torsion spring 33 abuts against or is fixed to the support plate 313, the other free end of the torsion spring abuts against or is fixed to the bottom surface of the intermediate plate 3241, and in a normal state, the torsion spring is compressed and deformed by the pressure of the driving roller 511 on the deflecting roller 2.

Therefore, when the deflection wheel 2 is not closely attached to the driving roller 51, the deformation restoring force of the torsion spring 33 causes the support body 32 to move upwards in a micro range relative to the support 31, so that the deflection wheel 2 moves upwards to closely attach to the driving roller 51 to realize effective friction driving.

Of course, in other embodiments, the driving roller 51 may also contact with the lower semicircle of the deflecting roller 2, and the driving roller 51 is elastically urged upward to always abut against the deflecting roller 2. In a specific implementation, a rod body is arranged at the bottom of the support piece 55, which is provided with bearings at two ends of the driving roller 51, the rod body is slidably clamped in a guide groove, a spring is arranged at the bottom of the rod body, and the spring is in a compressed state under the pressure of the rod body in a normal state, so that when the driving roller 51 and the deflection wheel 2 cannot be effectively attached, the support piece 55 at two ends of the driving roller is driven by the reaction force of the spring to float upwards, and the driving roller 51 is driven to be attached to the deflection wheel 2. In the above structure, the deflecting rollers 2 can only drive the object thereon to move in one direction, but cannot steer the object thereon by the deflecting rollers 2, and in view of this, in a further preferred embodiment, the mounting frame 3 is rotatably disposed on the supporting table 4, as shown in fig. 1 and 5, and two rows of deflecting rollers 2 of the same group are driven by one steering device 6.

At this time, the deflecting wheel 2 can be driven to swing through the steering device 6, so that the deflecting wheel 2 can be switched from one state to another state to steer the articles on the deflecting wheel.

Specifically, as shown in fig. 1, the supporting platform 4 at least includes a supporting plate 41, the connecting shaft 312 of the mounting bracket 3 is rotatably disposed on the supporting plate 41 and passes through the supporting plate 41, as shown in fig. 5, the steering device 6 includes a fixed second power source 61, the second power source 61 may be a motor, it is of course also possible to combine an electric motor with a belt drive, for example, said second power source 61 being connected to drive plates 63 via a crank-link drive 62 or a belt drive or a gear drive, each drive plate 63 being connected to the mounting 3 of a row of deflection wheels, preferably, the second power source 61 is connected to two drive plates 63 by a crank and link transmission 62, each drive plate 63 being pivotally connected to the free end of an eccentric link 66 pivotally connected to the bottom of the mounting 3 of a row of deflection wheels.

During operation, the crank connecting rod transmission structure 62 converts the rotary motion of the motor into the linear motion of the driving plate 63, so that the driving plate 63 drives one row of the mounting frame 3 to horizontally rotate so as to drive one row of the deflection wheels 2 to rotate to realize direction change.

In detail, as shown in fig. 5, a plurality of the second power sources 61 are disposed on a support plate 64, and the support plate 64 is mounted on the frame 12, so that the steering device 6 can apply no pulling force to the support table 4, thereby greatly reducing the load of the support table 4 and reducing the possibility of deformation of the support table 4.

As shown in fig. 5, the crank and link transmission structure 62 includes a first link 621 connected to the second power source 61, a free end of the first link 621 is pivotally connected to one end of a second link 622 through a rotating shaft, the other end of the second link 622 is pivotally connected to a connecting shaft 623 extending along the longitudinal direction, a connecting member 624 is disposed on the connecting shaft 623 through a supporting flat plate 625, the connecting member 624 is U-shaped as a whole, flanges 6241 are formed at open ends of two side plates thereof, two flanges 6241 of the connecting member 624 are respectively connected to one driving plate 63, and the driving plate 63 is a plate-shaped object and is welded, screwed or riveted with the flanges 6241.

Further, the above-mentioned wheeled transfer chain often can appear the delivery position precision of deflection wheel and often can the deviation after using a period of time, through the discovery of a large amount of research of utility model people, causes the reason of this problem to lie in: because the deflection wheels on the supporting plate 41 lead to the long-term large load condition, the deflection wheels are slightly deformed, namely, the deflection wheels are in an inwards concave arc shape, so that the deflection wheels in the middle area slightly sink, the deviation of the conveying position which should be achieved originally occurs, the control difficulty is increased, and the problem that the conveying position cannot be used completely even occurs seriously.

In view of this, as shown in fig. 6, the supporting table 4 further includes a supporting frame 42 fixed at the bottom of the supporting plate 41 and located above the driving plate 63, the supporting frame 42 includes a set of transverse supporting plates 421 and vertical supporting plates 422 arranged in a staggered manner in the transverse and longitudinal directions, the transverse supporting transverse plates 421 are erected on the cross beams at the two ends of the frame 1, and the vertical supporting plates 422 are fixed between the transverse supporting plates 421.

Of course, in other embodiments, the support platform 4 may be a plurality of independent support rods, a row of the deflection wheels 2 may be fixed on one support rod, and the support rod may be made of various known materials with sufficient support strength, preferably a square steel structure, which has the advantages of compact structure and good bearing capacity.

Still further, the second power source 61 is preferably an electric motor and can be connected to the crank-link transmission mechanism through an expansion sleeve or a coupling, preferably, the coupling is preferably a magnetic transmission coupling, as shown in fig. 7, the magnetic coupling 65 can be a known coupling structure through magnetic transmission, and in detail, the coupling comprises a housing 651, the housing 651 is made of a non-magnetic material, preferably stainless steel, the housing 651 comprises two mounting grooves 652, the two mounting grooves 2 are coaxial and are separated by a partition 653, and the partition 653 and the housing 651 are integrally formed.

One of the two mounting grooves 652 is provided with a rotating mechanism, and the two rotating mechanisms realize transmission through magnetic force, specifically, the rotating mechanism comprises a connecting seat 655 fixed in the mounting groove 652 through a bearing 654, the outer end surface of the connecting seat 655 is provided with a hole 6551 for connecting a shaft, the inner end surface of the connecting seat 655 is coaxially provided with a magnet mounting seat 656, the magnet mounting seat 656 is provided with a circle of magnets 657, and the magnetic poles of the magnets 657 of the two rotating mechanisms are opposite.

Owing to adopt the principle that the plane attracts mutually, interval (air gap) between two rotary mechanism is the less, and the moment of torsion is bigger, and utility model people can obtain best transmission effect through the research when interval between two rotary mechanism is not more than 7mm, and further preferred is not more than 5 cm.

During operation, the motor drives the connecting seat 655 on one side to rotate, so that the magnet 657 attracted by the magnetic core drives the connecting seat 655 on the other side to rotate, the first connecting rod 621 is driven to rotate, the first connecting rod 621 rotates to push or pull the second connecting rod 622 to move forwards or backwards, the connecting shaft 623 and the connecting piece 624 drive the driving plate 63 to move forwards or backwards, and finally the mounting frame 3 rotates to realize steering of the deflection wheel 2.

The utility model has a plurality of implementation modes, and all technical schemes formed by adopting equivalent transformation or equivalent transformation all fall within the protection scope of the utility model.

Claims (10)

1. Wheeled transfer chain, including frame (1), its characterized in that: the equal altitude in frame (1) is provided with multirow deflection wheel (2), and the axis of all deflection wheels (2) is parallel to each other and is on a parallel with the horizontal plane, and every deflection wheel (2) can set up on one mounting bracket (3) that are located frame (1) around its axis rotation ground, and every row deflection wheel (2) and drive roller (51) laminating, drive roller (51) with the lower semicircle contact of deflection wheel (2) just drive roller (51) receive ascending elasticity and with drive roller (51) self-adaptation laminating or drive roller with the last semicircle contact of deflection wheel just deflection wheel receives ascending elasticity and with drive roller (51) self-adaptation laminating, drive roller (51) rotation and through frictional force drive deflection wheel (2) rotation under the drive of first power supply (54).

2. Wheel conveyor line according to claim 1, characterised in that: the deflection wheels (2) are arranged in even number rows, two rows of deflection wheels are in a group, and one group of deflection wheels is driven to rotate by one driving roller (51).

3. Wheel conveyor line according to claim 1, characterised in that: the driving rollers (51) are connected through a belt transmission mechanism or a chain wheel transmission mechanism and realize synchronous and same-direction rotation, and one driving roller (51) is connected with a first power source (54).

4. Wheel conveyor line according to claim 1, characterised in that: mounting bracket (3) are including support (31), be formed with constant head tank (311) on support (31), movably joint has supporter (32) in constant head tank (311), be provided with torsional spring (33) between supporter (32) and support (31), torsional spring (33) normality receives under the pressure deformation of drive roller (51), and can drive supporter (32) are relative constant head tank (311) shifts up, rotatable frame is equipped with deflection wheel (2) on supporter (32).

5. Wheeled conveyor line according to any one of claims 1-4, characterised in that: the mounting rack (3) is arranged on the support table (4) of the rack (1) in a rotatable manner and is driven to rotate by the steering device (6).

6. Wheeled conveyor line according to claim 5, characterised in that: the support platform (4) comprises a support plate (41) and a support frame (42) positioned below the support plate (41).

7. Wheeled conveyor line according to claim 5, characterised in that: the steering device (6) comprises a second power source (61) with a fixed position, the second power source (61) is connected with at least one driving plate (63) through a crank-link transmission structure (62) or a belt transmission mechanism or a gear transmission mechanism, and each driving plate (63) is pivotally connected with an eccentric connecting piece (66) at the bottom of a mounting frame (3) of a row of deflection wheels.

8. Wheel-type conveyor line according to claim 7, characterised in that: two adjacent rows of deflection wheels are driven to steer through a steering device (6), and second power sources (61) of a plurality of steering devices (6) are fixed on a support plate (64) erected on the rack (1).

9. Wheel-type conveyor line according to claim 7, characterised in that: second power supply (61) pass through crank link drive mechanism drive mounting bracket (3), crank link drive structure (62) include first connecting rod (621) be connected with second power supply (61), the one end of free end pivot connection second connecting rod (622) of first connecting rod (621), the other end pivot connection of second connecting rod (622) is along vertically extending connecting axle (623), be provided with connecting piece (624) on connecting axle (623), two are connected to connecting piece (624) drive plate (63).

10. Wheel-type conveyor line according to claim 7, characterised in that: the second power source (61) is a motor and is connected with the crank connecting rod type transmission mechanism through an expansion sleeve or a coupling.

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