CN114873163A - Spiral tower net chain conveyor - Google Patents
Spiral tower net chain conveyor Download PDFInfo
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- CN114873163A CN114873163A CN202210571283.XA CN202210571283A CN114873163A CN 114873163 A CN114873163 A CN 114873163A CN 202210571283 A CN202210571283 A CN 202210571283A CN 114873163 A CN114873163 A CN 114873163A
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- 230000004323 axial length Effects 0.000 claims description 13
- 230000009194 climbing Effects 0.000 claims description 9
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- 239000007787 solid Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 description 13
- 230000006872 improvement Effects 0.000 description 9
- 230000001174 ascending effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- 230000005484 gravity Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/02—Belt- or chain-engaging elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/02—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration for conveying in a circular arc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
- B65G21/02—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors consisting essentially of struts, ties, or like structural elements
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Abstract
The invention relates to a spiral tower net chain conveyor, wherein a net chain enters the periphery of a turret along the tangential direction and is wound and extended along a spiral line, a plurality of turret stand columns and driving vertical rods are uniformly arranged along the circumference of the turret, net chain driving heads are respectively arranged on chain links of the net chain close to the inner side of the turret, guide blocks are respectively sleeved on the outer walls of the inlet ends of the turret stand columns, extended sections and leading-in sections are sequentially arranged on the outer walls of the guide blocks along the contact sequence of the net chain driving heads, the outer walls of the extended sections are planes, circular arc chamfers are respectively arranged on the two transverse sides of the outer walls of the extended sections, and the tail ends of the leading-in sections are inclined towards the outer walls of the turret stand columns. And raised strip-shaped convex ribs are respectively arranged on each guide block along the axes of the outer walls of the range-increasing section and the guide-in section, and the outer edge of the tail end of each strip-shaped convex rib is flush with the outer edge of the inlet end of the driving vertical rod. The outside of the inlet end of the stroke-increasing strip-shaped convex rib is covered with a convex rib adjusting sleeve capable of adjusting the length of the convex rib. When the driving vertical rod of the net chain conveyor drives the net chain to move forward, the meshing gap and the loosening gap can be eliminated, and the phenomenon of outer side tightening is improved.
Description
Technical Field
The invention relates to a conveyor, in particular to a spiral tower mesh chain conveyor, and belongs to the technical field of conveying equipment.
Background
The production line of baked food needs to bake food at high temperature, the high-temperature food taken out of the oven cannot be packaged immediately, and needs to be cooled and conveyed for a long time, and then the food is packaged after being completely cooled. The spiral tower net chain conveyor provides a long conveying distance under the condition of small occupied area, so that longer cooling time can be obtained, and the spiral tower net chain conveyor is widely applied to the food baking industry.
The existing spiral tower mesh chain conveyor comprises a turret, wherein a mesh chain is spirally wound on the periphery of the turret and synchronously rotates along with the turret, a turret central shaft is arranged at the center of the turret, and the upper end and the lower end of the turret central shaft are respectively supported on a frame through bearing seats; the bottom of each layer of net chain is supported on the spiral ring rail to slide, each layer of spiral ring rail is fixed on the radial support rod, the outer end of each radial support rod is fixed on the upright post, and the upright posts are uniformly distributed by taking the axis of the turret as the center.
The existing spiral tower net chain conveyor has the following defects: 1. the net chain directly enters the arc-shaped limiting guide section for forced steering from the straight line advancing section, and all pin shafts of the net chain are changed into a fan-shaped state with the outer side spacing larger than the inner side spacing from a mutually parallel state. In this process, the inner sides of the net chains need to be drawn together to accommodate the change in the outer perimeter. In actual use, because the net chain bears heavier goods, when the circumference change of the inner side of the net chain is not adapted to the outer side easily, the driving head is meshed with the driving vertical rod in advance, the inner side of the net chain is limited in the reverse direction of the driving vertical rod, the traction of the linear advancing section to the inner side of the arc-shaped limiting guide section is limited, the continuous non-adaptation accumulation of the inner side of the net chain to a certain degree can enable the length of the outer side of the net chain to be smaller than the theoretical circumference, the outer side of the net chain is tight, and the net chain can not be maintained in a loose state on the spiral tower to bear the goods.
2. Taking a guide lifting type spiral tower conveyor as an example, the outer wall of the lower end of a rotating tower can be uniformly provided with a plurality of guide blocks, so that a network chain driving head can be smoothly meshed with a driving vertical rod. The net chain driving heads of all the chain links of the net chain firstly prop against the cylindrical surface or the plane of the guide block and are screwed into the rotary drum, the inner sides of the net chains are folded, and the net chain driving heads cut into the front sides of the corresponding driving vertical rods one by one. The ideal working state is that the driving vertical rod is immediately engaged with the net chain driving head well and drives the inner side of the net chain to move forwards actively.
In actual work, before the mesh chain driving head and the corresponding driving vertical rod are meshed, the meshing gap between the meshing surface of the mesh chain driving head and the meshing surface of the corresponding driving vertical rod in the circumferential direction of the turret is overcome; after the net chain driving head is meshed with the corresponding driving vertical rod, the driving vertical rod drives the inner side of the net chain to move forward for a certain distance (namely, overcoming the slack clearance), and then the outer side of the net chain can be driven to move forward, so that the driving vertical rod can really drive the net chain to spirally rotate and move forward. The outer side of the net chain which is driven after the net chain moves backwards and is well meshed is tight, the net chain which just enters the turret is driven by the lagging of the driving vertical rod, and the power of the rotation and the forward movement of the net chain depends on the dragging of the spiral net chain at the front upper part. For the outside of capstan head and net chain, there is certain back displacement all the time when the inboard that the net chain drive head was located gets into the capstan head, makes the net chain inboard advance less, the important reason of outside tension, prior art does not can solve this problem all the time.
3. Because the frame is the welding piece, the bearing frame at capstan head center pin both ends is difficult to guarantee higher concentricity, and can not guarantee the straightness that hangs down with ground. In order to compensate for the different axial errors of the upper and lower bearing seats, the existing solution is to install a large self-aligning roller bearing in the bearing seat to realize the purpose of aligning; and the shaft head at the lower end of the central shaft of the turret adopts a splicing mode, so that the bearing is convenient to replace. In the operation process, after the self-aligning roller bearing is aligned, the inner ring of the bearing inclines to one side, and the self-aligning roller bearing not only needs to bear radial force, but also needs to bear the axial gravity of the turret perpendicular to the axis of the bearing, so that the bearing is easy to damage. Not only increases the cost of accessories, but also influences the stable operation of the production line.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a spiral tower net chain conveyor, which can overcome the meshing clearance between the meshing surface of a net chain driving head and the meshing surface of a corresponding driving vertical rod in the circumferential direction of a rotating tower when the driving vertical rod drives a net chain to move forward, eliminate the slack clearance and improve the phenomenon that the net chain is biased to be tight on the outer side of a spiral tower.
In order to solve the technical problems, the spiral tower mesh chain conveyor comprises a turret, a mesh chain enters the periphery of the turret in a tangential direction and extends in a winding manner along a spiral line, a plurality of turret stand columns are uniformly arranged along the circumference of the turret, driving vertical rods are respectively arranged on the outer walls of all or part of the turret stand columns at uniform intervals, mesh chain driving heads meshed with the driving vertical rods are respectively arranged on the inner sides, close to the turret, of chain links of the mesh chain, guide blocks are respectively sleeved on the outer walls of the inlet ends of the turret stand columns, an extended range section and a leading-in section are sequentially arranged on the outer walls of the guide blocks along the contact sequence of the mesh chain driving heads, the outer walls of the extended range section are planes, circular arc chamfers are respectively arranged on the two transverse sides of the outer walls of the extended range section, and the tail ends of the leading-in sections are inclined towards the outer walls of the turret stand columns.
As an improvement of the invention, raised strip-shaped convex ribs are respectively arranged on each guide block along the axes of the outer walls of the range-increasing section and the guide-in section, and the outer edge of the tail end of each strip-shaped convex rib is flush with the outer edge of the inlet end of the driving vertical rod.
As a further improvement of the invention, the outer side of the inlet end of the stroke-increasing strip-shaped convex rib is covered with a convex rib adjusting sleeve capable of adjusting the length of the convex rib, the middle section of the back surface of the convex rib adjusting sleeve is provided with an adjusting sleeve convex tenon connected with the convex rib adjusting sleeve into a whole, the adjusting sleeve convex tenon is embedded into a guide block elongated slot, the guide block elongated slot extends along the axis of the guide block and penetrates through the thickness direction of the guide block, and a locking gasket covers the inner port of the guide block elongated slot and is fixedly connected with the bottom of the adjusting sleeve convex tenon through a screw.
As a further improvement of the invention, a plurality of pairs of concave arc grooves are uniformly and symmetrically arranged on two side walls of the long groove of the guide block, at least one pair of convex arc parts are arranged on two side walls of the tenon of the adjusting sleeve, and the convex arc parts are embedded in a pair of concave arc grooves and matched with each other; or a plurality of pairs of convex arc parts are uniformly and symmetrically arranged on two side walls of the long groove of the guide block, and at least one pair of concave arc grooves are arranged on two side walls of the tenon of the adjusting sleeve.
As a further improvement of the invention, the convex rib adjusting sleeve is gradually reduced in diameter close to the inlet end and is of a solid structure.
As a further improvement of the invention, the arc length difference L exists between the spiral line arc length of the inner side of the net chain wound on the range extending section and the leading-in section and the spiral line arc length of the same phase angle wound along the turret upright post; the distance between the meshing surface of the mesh chain driving head at the entrance of the extended range section and the meshing surface of the driving vertical rod in the circumferential direction of the turret is defined as a meshing gap D1; after the driving vertical rod is meshed with the net chain driving head and drives the inner side of the net chain to move forward for a certain distance, the slack clearance D2 can be overcome to drive the outer side of the net chain to move forward; the arc length difference L is more than or equal to the meshing clearance D1+ the loosening clearance D2.
As a further improvement of the invention, the inlet end of the guide block is also provided with a plane section and an ascending inclined plane section, the distance between the plane section and the axis of the turret is smaller than the distance between the extended range section and the axis of the turret, and the ascending inclined plane section is connected between the plane section and the extended range section.
As a further improvement of the invention, the inlet end of the guide block is also provided with a cylindrical section and an inlet inclined plane section, the distance between the cylindrical section and the axis of the turret is greater than the distance between the range-extending section and the axis of the turret, the inlet inclined plane section is a transition inclined plane between the cylindrical section and the range-extending section, and the leading-in section is a transition inclined plane between the range-extending section and the inlet end of the driving vertical rod.
As a further improvement of the invention, the axial length of the inlet inclined plane section is 1/5-1/3 of the axial length of the range-extending section, and the arc length difference generated by the axial length of the range-extending section and the thickness of the range-extending section enables the mesh chain driving head to be smoothly meshed when reaching the driving vertical rod.
As a further improvement of the present invention, a turret center shaft is disposed at the center of the turret, the upper and lower ends of the turret center shaft are respectively supported on the frame through bearings, a main bearing seat is fixed at the bottom center of the frame, the main bearing seat is provided with a ball socket with an open upper end, a matched spherical outside support body is supported in the ball socket, a support body counter bore is disposed in the spherical outside support body, a planar bearing is mounted in the support body counter bore, and the lower end of the turret center shaft is supported on the planar bearing.
Compared with the prior art, the invention has the following beneficial effects: 1. the extended range section of the guide block is a plane, the leading-in section is an inclined plane which gradually contracts, and the arc length difference generated by the axial length of the extended range section and the thickness of the extended range section is utilized to make up the meshing gap and the loosening gap existing when the driving vertical rod is meshed with the net chain driving head, so that the outer side of the net chain immediately follows the turret to synchronously advance after the net chain driving head is meshed with the driving vertical rod, the spiral surface of the net chain wound on the periphery of the turret is in a loose state, and the tightness is avoided.
2. The strip-shaped convex ribs on the axes of the extended section and the lead-in section play a limiting role in the net chain driving head, the net chain driving head positioned on the front side in the rotation direction of the strip-shaped convex ribs is prevented from moving backwards due to the tension traction of the linear traveling section and other reasons, and therefore accumulation errors are avoided. The net chain driving head can adjust the position of the smooth outer wall without strip-shaped convex ribs at the inlet end of the extended range section, and the net chain driving head and the extended range section are close to each other. The distance between the actual end of the convex rib and the inlet of the extended range section can be changed by moving the convex rib adjusting sleeve so as to find the optimal position.
3. The guide block is only provided with the range-extending section and the leading-in section, and has the advantages that the axial length of the range-extending section is long, the height of a bulge in the radius direction of the turret is small, and the radius of the outer side of the net chain at the position of the guide block is slightly increased.
4. The guide block is provided with a plane section, an upward climbing inclined plane section, a range extending section and a leading-in section to form a trapezoid taking the range extending section as a high point, and the net chain enters the turret from the linear advancing section and is provided with a transition of the plane section and the upward climbing inclined plane section.
5. The guide block is provided with a cylindrical surface section, an inlet inclined plane section, a range extending section and a leading-in section, the range extending effect is strong, and the guide block is suitable for the condition that the meshing gap and the loosening gap are large.
6. The shoulder of the central shaft of the turret is supported on the upper ring of the plane bearing and bears the gravity of the turret, the net chain and the goods; meanwhile, the outer spherical support body can swing in the main bearing seat by a certain angle to compensate errors of coaxiality and verticality.
Drawings
The invention will be described in further detail with reference to the following drawings and detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.
FIG. 1 is a perspective view of a spiral tower mesh chain conveyor of the present invention;
FIG. 2 is a partial operating state diagram of a guide block according to a first embodiment of the present invention;
FIG. 3 is an exploded view of the guide block of FIG. 2;
FIG. 4 is an exploded view of the guide block of FIG. 2;
FIG. 5 is a partial operating state diagram of a second embodiment of a guide block according to the present invention;
FIG. 6 is a partial operating state diagram of a third embodiment of a guide block according to the present invention;
FIG. 7 is an enlarged view of the arcuate retainer plate portion of FIG. 1;
FIG. 8 is a top view of a net chain entering a circular arc spiral section from a straight traveling section;
FIG. 9 is a bottom view of FIG. 8;
FIG. 10 is an enlarged view of the central axis of the turret;
fig. 11 is an enlarged cross-sectional view of a link of the mesh chain.
In the figure: 1. a turret; 1a turret central shaft; 1b, driving a vertical rod; 1c, a turret column; 2. a network chain; 2a, a net chain driving head; 2b, a pin hole I; 2c, pin holes II; 2d, anti-slip rubber strips; 3. a main bearing housing; 4. an outer spherical surface support; 5. a flat bearing; 6. a linear travel section; 7. a turning bearing pad rail; 8. an arc limiting plate; 9. a free shaft; 10. a synchronous toothed belt; 11. a circular arc spiral section; 12. a frame; 13. a guide block; 13a, a cylindrical section; 13b, an entrance ramp segment; 13c, a range extending section; 13d, a lead-in section; 13e, strip ribs; 13f, a plane section; climbing an inclined plane section; 13h, long grooves of the guide blocks; 13j, a concave arc groove; 14. a convex rib adjusting sleeve; 14a, adjusting sleeve tenon; 14a1. convex arc part; 15. and locking the gasket.
Detailed Description
In the following description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not mean that the apparatus must have a specific orientation.
As shown in fig. 1, the spiral tower mesh chain conveyor of the present invention comprises a turret 1, a mesh chain enters the periphery of the turret 1 along a tangential direction and extends along a spiral line in a winding manner, a plurality of turret columns 1c are uniformly arranged along the circumference of the turret 1, the outer walls of all or part of the turret columns 1c which are uniformly spaced are respectively provided with a driving vertical rod 1b, the inner sides of each chain link of the mesh chain close to the turret are respectively provided with a mesh chain driving head 2a which is engaged with the driving vertical rod 1b, the outer walls of the inlet ends of each turret column are respectively sleeved with a guide block 13, that is, the outer walls of the lower ends of the turret columns of an ascending spiral or the outer walls of the upper ends of the turret columns of a descending spiral are respectively provided with a plurality of guide blocks 13.
As shown in fig. 2 to 4, the outer wall of the guide block is sequentially provided with an extended section 13c and an introduction section 13d along the contact sequence of the net chain driving head, the outer wall of the extended section 13c is a plane, the two lateral sides of the outer wall are respectively provided with an arc chamfer, and the tail end of the introduction section 13d inclines towards the outer wall of the turret column.
Raised strip-shaped convex ribs 13e are respectively arranged on each guide block along the axes of the outer walls of the range-increasing section 13c and the leading-in section 13d, and the outer edges of the tail ends of the strip-shaped convex ribs 13e are flush with the outer edge of the inlet end of the driving vertical rod 1b, so that smooth butt joint is realized; the strip-shaped convex ribs 13e can prevent the net chain driving head 2a on the front side of the net chain from moving backwards, so that the backstopping effect is achieved, and the phenomenon that the inner side of the net chain retreats due to the tension of the linear advancing section is avoided; the rib 13e also enables the net chain driving head 2a to be engaged with the driving stem 1b more smoothly. The distance between the end of the rib 13e and the inlet end of the extended range section 13c is typically one quarter of the length of the extended range section 13c.
The outer side of the inlet end of the strip-shaped convex rib at the extended range is covered with a convex rib adjusting sleeve 14 capable of adjusting the length of the convex rib, the top of the section of the convex rib adjusting sleeve 14 is semicircular, and the two sides extend towards the outer wall of the guide block and are nested and lapped on the strip-shaped convex rib 13 e; the inlet end gradually shrinks and is of a solid structure, namely the inlet end is the thinnest and gradually increases in thickness.
The middle section of the back of the convex rib adjusting sleeve 14 is provided with an adjusting sleeve tenon 14a which is connected with the convex rib adjusting sleeve 14 as a whole, the adjusting sleeve tenon 14a is embedded in a guide block elongated slot 13h, the guide block elongated slot 13h extends along the axis of the guide block and penetrates through the thickness direction of the guide block, and a locking gasket 15 covers the inner port of the guide block elongated slot 13h and is fixedly connected with the bottom of the adjusting sleeve tenon 14a through a screw.
The adjusting sleeve tenon 14a can adjust the position in the guide block long groove 13h to change the overlapping length of the convex rib adjusting sleeve 14 at the end of the strip-shaped convex rib 13e, and the inlet end of the solid section of the convex rib adjusting sleeve 14 is used as the adjusted end of the strip-shaped convex rib.
A plurality of pairs of concave arc grooves 13j are uniformly and symmetrically arranged on two side walls of the long groove 13h of the guide block, at least one pair of convex arc parts 14a1 are arranged on two side walls of the tenon 14a of the adjusting sleeve, and the convex arc parts 14a1 are embedded in a certain pair of concave arc grooves 13j and are matched with each other. In this way, the adjusting sleeve tenon 14a can move in the guide block long groove 13h according to grids, and the distance of each movement is the center distance of the adjacent concave arc grooves 13j. The cooperation of the arcuate segment 14a1 with the arcuate groove 13j allows for axial positioning of the adjustment sleeve tongue 14a.
Or a plurality of pairs of convex arc parts are uniformly and symmetrically arranged on two side walls of the guide block elongated slot 13h, and at least one pair of concave arc grooves are arranged on two side walls of the adjusting sleeve tenon 14a, so that the positioning of the adjusting sleeve tenon 14a in the guide block elongated slot 13h can be still realized.
After the position of the adjusting sleeve tenon 14a is adjusted properly, the inner port of the guide block elongated slot 13h is covered with a locking gasket 15, and a screw is screwed into the bottom screw hole of the adjusting sleeve tenon 14a through the locking gasket 15.
Because the radius of the circumference where the range-extending section 13c is located is larger than that of the circumference where the driving vertical rod 1b is located, the radius difference brings the arc length difference of the same central angle at the inner side of the net chain. When the net chain passes through the extension section 13c and the leading-in section 13d and then enters and is meshed with the driving vertical rod 1b, the arc length difference can counteract the prior meshing gap and the loosening gap, the driving vertical rod 1b is immediately well meshed with the net chain driving head 2a, and the driving vertical rod 1b can normally drive the inner side of the net chain to move forward. On one hand, the dragging of the front net chain is not relied on, and on the other hand, the back movement of the inner side of the net chain is not generated.
Viewed circumferentially, there is a distance between the mesh chain drive head engagement surface at the entrance of the extended range section 13c and the drive leg engagement surface in the turret circumference, defined as the engagement gap D1. After the net chain driving head 2a is engaged with the corresponding driving vertical rod, the driving vertical rod 1b drives the inner side of the net chain to advance for a certain distance, and then drives the outer side of the net chain to follow the advance, and the distance is defined as a slack clearance D2.
A certain net chain driving head 2a enters a range-increasing section 13c of a guide block from the beginning and goes to a leading-in section 13d separated from the guide block, the central angle rotated by the guide block corresponding to the axis of the turret is defined as a range-increasing phase angle, the inner side of a net chain corresponding to each range-increasing phase angle is wound on the spiral arc length of the range-increasing section 13c and the spiral arc length of the leading-in section 13d, an arc length difference exists between the spiral arc length wound along the turret upright post 1c at the same phase angle, and the arc length difference is defined as an arc length difference L; the arc length difference L is more than or equal to the meshing clearance D1+ the loosening clearance D2.
The larger the ratio of L/(D1 + D2), the looser the outer side of the net chain, the loose conveying is realized, and the bearing capacity is stronger, so as to ensure that the driving vertical rod 1b drives the net chain driving head 2a to advance in time. Therefore, the accumulated error caused by the loosening and collapsing of the gap can be avoided, and the tight net chain caused by the lag or the short-term advance of the inner side of the net chain can also be avoided.
In a two-column application, the ratio of L/(D1 + D2) may be non-uniform to facilitate reducing tension in the two-column transition section.
As shown in fig. 5, in the second embodiment of the guide block, the inlet end of the guide block is further provided with a planar section 13f and an ascending slope section 13g, the distance between the planar section 13f and the turret axis is smaller than the distance between the extended range section 13c and the turret axis, and the ascending slope section 13g is connected between the planar section 13f and the extended range section 13c. The range-increasing section 13c is the highest point and forms a trapezoidal section with the ascending inclined planes and the leading-in sections 13d on the two sides. The inner end of the net chain gradually enters an upward climbing inclined plane from a low plane section 13f, then enters a range extending section 13c, and then slides downwards through a guiding section 13d to enter a driving vertical rod 1b. The length of the climbing slope is less than that of other sections, and the negative arc length difference generated by the climbing slope can be reduced as short as possible. The length of the range-extending section 13c is longer, a large positive arc length difference is generated, and after the negative arc length difference of the climbing slope is offset, the meshing gap D1+ the loosening gap D2 is compensated.
As shown in fig. 6, in the third embodiment of the guide block, the outer wall of the guide block 13 is sequentially provided with a cylindrical section 13a, an entrance slant section 13b, an extended-range section 13c and a lead-in section 13d along the contact sequence of the net chain driving head 2a, and the distance between the outer wall of the extended-range section and the axis of the turret is greater than the distance between the outer wall of the turret upright and the axis of the turret; when a large range is required, the distance between the outer wall of the range-extending section and the axis of the turret can be larger than the distance between the outer edge of the driving vertical rod and the axis of the turret; the distance between the outer wall of the cylindrical section and the axis of the turret is greater than the distance between the outer wall of the extended-range section and the axis of the turret, the inlet inclined-plane section 13b is a transition inclined plane between the cylindrical section 13a and the extended-range section 13c, and the leading-in section 13d is a transition inclined plane between the extended-range section 13c and the inlet end of the driving vertical rod 1b.
The inner side of the net chain can abut against the cylindrical section 13a of the guide block 13 to be screwed into the turret and approach to each other, then the inner side of the net chain enters the range-extending section 13c after being transited by the entrance inclined section 13b, and the cylindrical section 13a of the guide block 13 is larger than the circumference where the range-extending section 13c is located by a certain radius, so that the net chain is more loose when reaching the range-extending section 13c from the cylindrical section 13a.
In a top view, there is a distance between the engagement surface of the mesh chain drive head of the entry ramp section 13b and the engagement surface of the drive leg in the circumferential direction of the turret, which distance is defined as the engagement gap D1. After the net chain driving head 2a is engaged with the corresponding driving vertical rod, the driving vertical rod drives the inner side of the net chain to advance for a certain distance, and then the outer side of the net chain is driven to follow the advance, and the distance is defined as a slack clearance D2.
From an entrance slope section 13b where the net chain driving head 2a starts to enter the guide block to a leading-in section 13d where the net chain driving head is separated from the guide block, a central angle through which the guide block rotates corresponding to the axis of the turret is defined as a range-increasing phase angle, spiral arc lengths of the inner side of the net chain corresponding to each range-increasing phase angle and wound on the entrance slope section 13b, the range-increasing section 13c and the leading-in section 13d exist arc length differences between the spiral arc lengths of the net chain corresponding to each range-increasing phase angle and the spiral arc lengths of the net chain wound along the turret upright post 1c at the same phase angle, and the arc length differences are defined as arc length differences L. The arc length difference L of this embodiment includes an arc length difference L1 due to the entrance slope section 13b, an arc length difference L2 due to the extended range section 13c, and an arc length difference L3 due to the lead-in section 13d.
And a raised strip-shaped convex rib 13e is arranged along the axis of the outer wall from the guide block inlet inclined plane section 13b to the guide-in section 13d, one end of the strip-shaped convex rib 13e is flush with the guide block cylindrical surface section 13a, and the other end of the strip-shaped convex rib 13e is in smooth butt joint with the inlet end of the driving vertical rod 1b.
The length of the inlet slope section 13b along the axial direction of the drum is called the axial length of the inlet slope section, the length of the range-increasing section 13c along the axial direction of the drum is called the axial length of the range-increasing section, and the axial length of the inlet slope section is 1/5-1/3 of the axial length of the range-increasing section.
The difference between the distance between the outer wall of the extended range section and the axis of the turret and the radius of the turret is equal to the thickness of the extended range section, the radius of the turret is the distance between the outer wall of the turret upright post 1c and the axis of the turret, and the arc length difference generated by the axial length of the extended range section and the thickness of the extended range section enables the mesh chain driving head 2a to be smoothly meshed when reaching the driving vertical rod.
The width of the guide block is very small relative to the circumference of the turret, and the cylindrical section 13a and the range-extending section 13c of the guide block can be cylindrical arc surfaces taking the axis of the turret as the center and can also be approximately flat; the entrance slant section 13b and the introduction section 13d of the guide block may be conical surfaces centered on the turret axis or may be nearly slanted to simplify the machining.
As shown in fig. 1 and 7 to 9, the net chain 2 enters the arc-shaped limiting guide section from the straight line advancing section 6 through the turning bearing section, extends along a spiral line from the arc-shaped limiting guide section and is butted with the arc-shaped spiral section 11 on the turret 1, the mesh of the net chain driving head 2a and the driving vertical rod 1b is realized at the tail end of the arc-shaped limiting guide section, and the central angle gamma of the turning bearing section relative to the axis of the turret is 20-60 degrees. In the turning bearing section, the outer end and the inner end of the net chain 2 are not limited, the position is freely adjusted, the net chain 2 is freely adjusted to be in a fan-shaped opening state by the parallel state through the adjustment of one section of circular arc, then the net chain enters the arc limiting guide section to be guided forcibly, and the meshing with the driving vertical rod 1b is realized at the tail end of the arc limiting plate 8.
Evenly be equipped with anti-skidding adhesive tape 2d on the net chain 2, each anti-skidding adhesive tape 2d extends along the width direction of net chain, and the bottom of article is fallen on anti-skidding adhesive tape 2d and is avoided sliding. When the net chain enters the turning from the straight advancing section 6, the pitch change is small at the position close to the outer side of the net chain, and the arrangement of the anti-skid rubber strips 2d is dense. The position close to the inner side of the net chain has larger pitch change during turning, and each station is provided with an anti-slip rubber strip 2d.
The turning bearing section is provided with a turning bearing pad rail 7 extending along the circular arc line, the turning bearing pad rail 7 is uniformly provided with a plurality of rollers supported at the bottom of the net chain, so that the resistance of the net chain in the turning bearing section is smaller, and the free adjustment of the net chain is facilitated.
For the guide lifting type net chain conveyor, the lower end of each driving vertical rod 1b is higher than the inlet height of the arc-shaped limit guide section and lower than the outlet height of the arc-shaped limit guide section.
For the guiding and descending type net chain conveyor, the upper end of each driving vertical rod 1b is lower than the inlet height of the arc-shaped limiting guide section and higher than the outlet height of the arc-shaped limiting guide section, so that the net chain driving head 2a is prevented from contacting the driving vertical rods 1b before entering the arc-shaped spiral section 11 to form interference.
An arc limiting plate 8 is arranged below the arc limiting guide section, limiting bulges extending downwards are respectively arranged on the outer sides of all chain links of the net chain 2, and all the limiting bulges are respectively abutted against limiting outer arc surfaces of the arc limiting plate 8 to slide.
The distance between the middle section of the limiting outer arc surface and the outer wall of the turret is larger than the distance between the two ends of the limiting outer arc surface and the outer wall of the turret.
At the inlet end of the arc-shaped limiting plate 8, the net chain driving head 2a abuts against the outer wall of the turret 1 and is not in contact with the driving vertical rod 1 b; as the net chain advances towards the middle section of the arc-shaped limiting plate 8, the arc top of the net chain driving head 2a gradually crosses the high point of the driving vertical rod 1b and gradually enters into meshing; when the net chain advances to the outlet end of the arc limiting plate 8, the rear side groove of the net chain driving head 2a is completely meshed with the driving vertical rod 1b, and the driving vertical rod 1b drives the net chain driving head 2a to further drive the net chain to advance around the rotation tower axis in a rotating mode.
Two free shafts 9 which are parallel to each other or extend along the radial direction of the turret are arranged below the arc-shaped limiting plate 8, two ends of each free shaft 9 are respectively provided with a synchronous cog wheel, the synchronous cog wheels on the same side are connected through a synchronous cog belt 10, and the top of the synchronous cog belt 10 is respectively exposed out of the avoidance groove of the arc-shaped limiting plate 8 and is supported below the net chain 2.
The tight outer side of the net chain 2 is pressed on the synchronous toothed belt 10 on the outer side to drive the synchronous toothed belt to rotate, the synchronous toothed belt 10 on the outer side drives the two free shafts 9 to rotate through the synchronous toothed wheel on the outer side, the two free shafts 9 drive the synchronous toothed belt on the inner side to rotate through the synchronous toothed wheel on the inner side, and the synchronous toothed belt promotes the net chain on the inner side to advance, so that the inner side is beneficial to more ruler feeding, and the net chain is loosened.
The shaft end of one free shaft can be driven by a speed reducing motor, so that the synchronous toothed belt 10 on the inner side actively drives the net chain on the inner side to advance, and the purpose of loosening the net chain by means of multi-footage on the inner side can be achieved more controllably.
As shown in fig. 10, a turret center shaft 1a is arranged at the center of the turret 1, the upper end and the lower end of the turret center shaft 1a are respectively supported on the frame 12 through bearings, a plurality of driving vertical rods 1b extending vertically are uniformly arranged along the periphery of the turret, the net chain 2 enters the periphery of the turret 1 along the tangential direction and winds and extends along a spiral line, net chain driving heads 2a are respectively arranged on the inner sides of the chain links of the net chain 2 close to the turret 1, and after entering the periphery of the turret 1, the driving vertical rods 1b are meshed with certain net chain driving heads 2a to drive the net chain 2 to rotate along with the turret 1.
A main bearing seat 3 is fixed at the center of the bottom of the frame 12, the main bearing seat 3 is provided with a ball socket with an opening at the upper end, a matched outer spherical surface supporting body 4 is supported in the ball socket, the top of the outer spherical surface supporting body 4 is a plane and is provided with a supporting body counter bore, a plane bearing 5 is installed in the supporting body counter bore, and the lower end of the turret center shaft 1a is supported on the plane bearing 5.
The upper ring of the plane bearing 5 is a loose ring, the shoulder of the turret central shaft 1a is supported on the upper ring, the upper ring is supported on the lower ring through balls with a retainer to rotate, and the lower ring is a tight ring and is fixed at the bottom of the counter bore of the support body. The spherical outer surface support 4 is supported by the spherical surface in the main bearing housing 3 and can bear a large axial weight. The outer spherical surface support body 4 can also swing in a ball socket, so that the function of aligning is realized, and the error of a frame welding part is compensated.
As shown in fig. 11, each chain link of the net chain is respectively provided with a pin hole I2 b and a pin hole II 2c which penetrate through the width direction of the net chain, the cross sections of the pin hole I2 b and the pin hole II 2c are in an oval shape extending along the advancing direction of the net chain, the front side wall of the pin hole I2 b, at least one third of which is close to the outer chain tooth, is forwards inclined along the same inclined plane, and the rear side wall of the pin hole II 2c, at least one third of which is close to the outer chain tooth, is backwards inclined along the other inclined plane.
The front inclined plane and the front side wall of the straight hole form an included angle alpha, so that the outer end head of the first chain pin cannot contact the front inclined plane, the acting point of the first chain pin and the pin hole I2 b in turning is the intersection point of the front inclined plane and the front side wall of the straight hole, namely the acting point of the first chain pin and the pin hole I2 b moves inwards 1/3 mesh chain width from the outermost chain tooth.
The back inclined plane and the back side wall of the straight hole form an included angle beta, so that the outer end head of the second chain pin cannot contact the back inclined plane, the acting point of the second chain pin and the second pin hole 2c in turning is the intersection point of the back inclined plane and the back side wall of the straight hole, namely the acting point of the second chain pin and the second pin hole 2c moves inwards 1/3 mesh chain width from the outermost sprocket, the acting point is closer to the central line of the mesh chain in the amplitude direction, the distance between the acting point and the inner end head of the mesh chain is shortened, and the adjustment of the inner end head of the mesh chain is facilitated.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention. Technical features of the present invention which are not described may be implemented by or using the prior art, and will not be described herein.
Claims (10)
1. The utility model provides a spiral tower net chain conveyor, includes the capstan head, and the net chain gets into the periphery of capstan head and extends along the spiral winding along the tangent direction, evenly is equipped with many capstan head stands along the circumference of capstan head, its characterized in that: the outer wall of the whole or partial turret stand columns at even intervals is respectively provided with a driving vertical rod, the inner side, close to the turret, of each chain link of the net chain is respectively provided with a net chain driving head meshed with the driving vertical rod, the outer wall of the inlet end of each turret stand column is respectively sleeved with a guide block, the outer wall of each guide block is sequentially provided with a range-increasing section and a lead-in section along the contact sequence of the net chain driving heads, the outer wall of the range-increasing section is respectively provided with an arc chamfer angle for the plane and the two transverse sides, and the tail end of the lead-in section inclines towards the outer wall of the turret stand column.
2. The spiral tower mesh chain conveyor of claim 1, wherein: and raised strip-shaped convex ribs are respectively arranged on the guide blocks along the axes of the outer walls of the range extending section and the guide-in section, and the outer edge of the tail end of each strip-shaped convex rib is flush with the outer edge of the inlet end of the driving vertical rod.
3. The spiral tower mesh chain conveyor of claim 1, wherein: the outer side of the inlet end of the stroke-increasing strip-shaped convex rib is covered with a convex rib adjusting sleeve capable of adjusting the length of the convex rib, the middle section of the back face of the convex rib adjusting sleeve is provided with an adjusting sleeve tenon connected with the convex rib adjusting sleeve into a whole, the adjusting sleeve tenon is embedded into a guide block elongated slot, the guide block elongated slot extends along the axis of the guide block and penetrates through the thickness direction of the guide block, and a locking gasket covers an inner port of the guide block elongated slot and is fixedly connected with the bottom of the adjusting sleeve tenon through a screw.
4. The spiral tower mesh chain conveyor of claim 3, wherein: a plurality of pairs of concave arc grooves are uniformly and symmetrically arranged on two side walls of the long groove of the guide block, at least one pair of convex arc parts are arranged on two side walls of the tenon of the adjusting sleeve, and the convex arc parts are embedded in a certain pair of concave arc grooves and matched with each other; or a plurality of pairs of convex arc parts are uniformly and symmetrically arranged on two side walls of the long groove of the guide block, and at least one pair of concave arc grooves are arranged on two side walls of the tenon of the adjusting sleeve.
5. The spiral tower mesh chain conveyor of claim 3, wherein: the convex rib adjusting sleeve is gradually contracted close to the inlet end and is of a solid structure.
6. The spiral tower mesh chain conveyor of claim 2, wherein: the arc length difference L exists between the spiral line arc lengths of the inner sides of the net chains wound on the range extending section and the leading-in section and the spiral line arc lengths of the same phase angle wound along the turret upright post; the distance between the meshing surface of the mesh chain driving head at the entrance of the extended range section and the meshing surface of the driving vertical rod in the circumferential direction of the turret is defined as a meshing gap D1; after the driving vertical rod is meshed with the net chain driving head and drives the inner side of the net chain to move forward for a certain distance, the slack clearance D2 can be overcome to drive the outer side of the net chain to move forward along with the net chain; the arc length difference L is more than or equal to the meshing clearance D1+ the loosening clearance D2.
7. The spiral tower mesh chain conveyor of claim 1, wherein: the inlet end of the guide block is also provided with a plane section and an upward climbing inclined plane section, the distance between the plane section and the axis of the turret is smaller than the distance between the extended range section and the axis of the turret, and the upward climbing inclined plane section is connected between the plane section and the extended range section.
8. The spiral tower mesh chain conveyor of claim 1, wherein: the inlet end of the guide block is also provided with a cylindrical section and an inlet inclined plane section, the distance between the cylindrical section and the axis of the turret is greater than the distance between the range-extending section and the axis of the turret, the inlet inclined plane section is a transition inclined plane between the cylindrical section and the range-extending section, and the leading-in section is a transition inclined plane between the range-extending section and the inlet end of the driving vertical rod.
9. The spiral tower mesh chain conveyor of claim 8, wherein: the axial length of the inlet inclined plane section is 1/5-1/3 of the axial length of the range-extending section, and the arc length difference generated by the axial length of the range-extending section and the thickness of the range-extending section enables the mesh chain driving head to be meshed smoothly when reaching the driving vertical rod.
10. The spiral tower mesh chain conveyor of any one of claims 1 to 9, wherein: the center of the turret is provided with a turret center shaft, the upper end and the lower end of the turret center shaft are supported on the rack through bearings respectively, a main bearing seat is fixed at the center of the bottom of the rack, the main bearing seat is provided with a ball socket with an opening at the upper end, a matched spherical outside surface supporting body is supported in the ball socket, a supporting body counter bore is arranged in the spherical outside surface supporting body, a plane bearing is installed in the supporting body counter bore, and the lower end of the turret center shaft is supported on the plane bearing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210571283.XA CN114873163B (en) | 2022-05-24 | 2022-05-24 | Spiral tower net chain conveyor |
| PCT/CN2022/112772 WO2023226206A1 (en) | 2022-05-24 | 2022-08-16 | Spiral tower mesh chain conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210571283.XA CN114873163B (en) | 2022-05-24 | 2022-05-24 | Spiral tower net chain conveyor |
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| Publication Number | Publication Date |
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| CN114873163A true CN114873163A (en) | 2022-08-09 |
| CN114873163B CN114873163B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210571283.XA Active CN114873163B (en) | 2022-05-24 | 2022-05-24 | Spiral tower net chain conveyor |
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| Country | Link |
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| CN (1) | CN114873163B (en) |
| WO (1) | WO2023226206A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115593869A (en) * | 2022-11-02 | 2023-01-13 | 扬州市伟东传送设备有限公司（Cn） | Spiral type net chain conveyor |
| WO2023226206A1 (en) * | 2022-05-24 | 2023-11-30 | 扬州市伟东传送设备有限公司 | Spiral tower mesh chain conveyor |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2023226206A1 (en) | 2023-11-30 |
| CN114873163B (en) | 2024-04-16 |
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