A floor material conveying device

Abstract

A floor material conveying device, comprising a bracket on which a pair of conveying columns are formed. A chain that rotates around the conveying columns is arranged on the conveying columns; a group of conveying devices are respectively fixed between the two chains and arranged at intervals along the length direction of the chain. One side of the conveying device abuts against the two conveying columns and slides thereon. The conveying device includes first and second supporting plates, which are hinged to each other, and the rotation and opening / closing of the second supporting plate are controlled to realize the unloading and lifting of goods; a building body, openings are provided at each floor, and a push cylinder that cooperates with the conveying device to rotate and open the second supporting plate for unloading goods and a conveyor belt for receiving goods are arranged at the openings; a driving mechanism is arranged on one side surface at the upper end of the conveying column and is in transmission connection with the chain. Advantages: It realizes the function of transferring goods between different floors and automatically unloading goods, effectively improves the automation degree of the conveying device and greatly improves the conveying efficiency of materials.

Description

Technical Field

[0001] The present invention belongs to the technical field of fabric conveying equipment, and particularly relates to a floor material conveying device. Background Art

[0002] In the textile industry, it is often necessary to transfer the rolled fabrics to be processed to different floors for processing, or to transfer the rolled fabrics that have completed processing to the bottom floor for packing. In this process, some are transferred by manual handling, which has the lowest efficiency and the highest cost; some are transferred by a combination of a slide and manual labor, although the efficiency is significantly improved, but a large amount of manpower is still required and the fabric rolls are easily worn; and some use a vertical conveyor to transfer the fabric rolls. This method has the highest efficiency, low cost and is not easy to wear the fabric rolls, meeting the needs of manufacturers to transfer fabric rolls efficiently and at low cost. In order to save the cost of the conveyor, the industry usually adopts a structure in which a chain drags a tray to rotate cyclically between floors, and the automatic unloading of the fabric can only be achieved by pouring out the fabric roll when the tray changes direction during rotation, that is, automatic unloading can be achieved at the bottom floor, but it cannot meet the requirement of automatic unloading on each floor.

[0003] In the prior art, such as a "bucket conveyor" disclosed in the Chinese invention patent authorization announcement number CN202321481U, which includes a frame, on both sides of the frame, a first and a second annular guide rails are respectively fixed. The tops of the first and second annular guide rails both protrude from the top of the frame, and the bottoms both protrude from the bottom of the frame, and there is a distance between the first and second annular guide rails, and the second annular guide rail is surrounded by the first annular guide rail; a feeding hopper driving mechanism is arranged on the frame; a group of feeding hoppers are connected to the feeding hopper driving mechanism at intervals and are simultaneously engaged with the first and second annular guide rails. Driven by the feeding hopper driving mechanism, the group of feeding hoppers move cyclically along the first annular guide rail and the second annular guide rail; a feeding hopper opening mechanism is arranged on the frame and is engaged with the feeding hopper. Although this technical solution can meet the requirements of vertical lifting and conveying, and can convey the upper-layer materials to the bottom layer and perform automatic unloading, there is still the problem that automatic unloading cannot be completed on each floor as described above.

[0004] In view of the above situation, it is necessary to design a material conveying device with a simple structure and low cost, which can meet the requirement of automatic unloading of goods on each floor. For this reason, the applicant has made a beneficial design, and the technical solution to be introduced below is generated under this background. Summary of the Invention

[0005] The purpose of the present invention is to provide a floor material conveying device, which helps to improve the structure of the bracket so that the bracket can complete automatic unloading on different floors during movement, is beneficial to improving the automation degree of the conveying device and enhancing the conveying efficiency of materials.

[0006] The object of the present invention is achieved as follows: a floor material conveying device includes a bracket on which a pair of conveying columns are formed. A chain that rotates around the conveying column is respectively arranged on the conveying columns. A group of conveying devices are respectively fixed between the two chains and arranged at intervals along the length direction of the chains. One side of the conveying devices respectively abuts against the two conveying columns and slides. The conveying device includes a first support plate and a second support plate, and the first support plate and the second support plate are hinged to each other and realize the unloading and lifting of goods by controlling the rotation and opening of the second support plate. A building body is provided with an opening at each floor of the building body, and a push cylinder that cooperates with the conveying device to rotate and open the second support plate to unload goods and a conveyor belt for receiving goods are respectively arranged at the opening. A driving mechanism is arranged on one side surface of the upper end of one of the conveying columns and is in transmission connection with the chain.

[0007] In a specific embodiment of the present invention, the first support plate and the second support plate form a structure in the shape of the letter "y".

[0008] In another specific embodiment of the present invention, the bracket includes a bottom plate fixed on a horizontal base plane and beside the building body and a pair of vertical columns fixed on the bottom plate. The conveying columns are arranged on the side of the columns facing the building body and are respectively fixedly connected to the corresponding columns through a group of cross beams. The conveying columns and the columns are arranged parallel to each other. An upper gear cavity is opened at the upper end of the conveying column, and a lower gear cavity is opened at the lower end. An upper gear is respectively arranged in the upper gear cavity. The upper gears are respectively fixed on a driving shaft and are rotatably arranged on the conveying column through the driving shaft. Both ends of the driving shaft respectively pass through a pair of conveying columns on both sides and extend outwards. One end of the driving shaft is in transmission connection with the driving mechanism. A pair of driving shaft bearings are respectively arranged between the driving shaft and the pair of conveying columns. A lower gear is respectively arranged in the lower gear cavity. The lower gears are respectively rotatably arranged on a tensioning shaft. Both ends of the tensioning shaft respectively pass through a pair of conveying columns on both sides and extend outwards. A lower gear bearing is respectively arranged between the lower gear and the tensioning shaft. The conveying column is respectively provided with a tensioning groove at the positions on both sides corresponding to the tensioning shaft, so that the tensioning shaft can slide up and down along the tensioning groove. A screw upper fixing plate and a screw lower fixing plate are respectively fixed on one side of the conveying column above and below the tensioning groove. An adjusting screw is respectively penetrated through the screw upper fixing plate and the screw lower fixing plate. The adjusting screws on the two conveying columns respectively pass through the two ends of the tensioning shaft and are in threaded connection with the tensioning shaft. A pair of nuts that respectively cooperate with the screw upper fixing plate and the screw lower fixing plate are arranged on the adjusting screw. The chains respectively surround and mesh with the upper gears and the lower gears on the upper and lower sides of the conveying column and drive the driving shaft to rotate through the driving mechanism, thereby driving the upper gears to rotate and driving the chains to rotate.

[0009] In yet another specific embodiment of the present invention, the driving mechanism includes a driving mounting plate fixed to one of the conveying columns, a reduction gearbox fixed to the driving mounting plate, and a motor fixed to the reduction gearbox and drivingly connected to the reduction gearbox. One end of the reduction gearbox is drivingly connected to one end of the driving shaft through a coupling.

[0010] In still another specific embodiment of the present invention, a braking device symmetrically arranged with the driving mechanism is provided at the other end of the driving shaft and fixed to the other conveying column. The braking device includes a brake disc fixed to the end of the other end of the driving shaft, a brake mounting plate located below the brake disc and fixed to the corresponding conveying column, a brake installed on the brake mounting plate, a brake arm cooperating with the brake, and a brake arm seat installed on the brake mounting plate and hinged to the brake arm. The upper end of the brake arm is formed with a brake pad frictionally cooperating with the brake disc. One end of the brake is provided with a pneumatically telescopic brake push rod corresponding to the lower end of the brake arm. The brake push rod can push the brake arm to rotate and make the brake pad abut against the brake disc to achieve frictional braking.

[0011] In still another specific embodiment of the present invention, a pair of support rods respectively abutting against the corresponding conveying columns are formed on one side of the first support plate facing the conveying column. A pair of rollers are respectively formed at the upper and lower ends of the support rod and rollingly arranged on the corresponding conveying column. Chain connecting plates are respectively arranged on both sides of the support rod. One end of the chain connecting plate is fixed to the corresponding support rod through a pair of connecting plate screws, and the other end is fixed to a pair of chain pins on the chain.

[0012] In a further specific embodiment of the present invention, one side edge of the first support plate extends obliquely downward and is vertically bent to form a first support plate connecting panel. A bushing is respectively formed on both sides of the first support plate connecting panel. Shaft heads hingedly cooperating with the bushings are respectively formed at the corresponding positions on both sides of the middle of the second support plate. Springs are respectively arranged on both sides of the first support plate and the second support plate. First support plate spring fixing feet are respectively formed on both sides of the first support plate at the bending position of the first support plate connecting panel. Second support plate spring fixing feet are respectively formed at the positions beside the first support plate spring fixing feet on both sides of the second support plate. The two ends of the spring in the length direction are respectively pulled on the corresponding first support plate spring fixing feet and second support plate spring fixing feet, which can make the first support plate and the second support plate close together and lift the goods.

[0013] In a further specific embodiment of the present invention, a retaining edge is bent at the lower edge of the second supporting plate, and a push rod of the push cylinder is formed on the push cylinder. When the push rod of the push cylinder is pushed out, it can be inserted into the bending part between the second supporting plate and the retaining edge and force the second supporting plate to rotate and open, so that the goods slide from the second supporting plate onto the corresponding conveyor belt.

[0014] In yet another specific embodiment of the present invention, a position sensor is respectively arranged below the opening of the building body. The position sensor can sense the passing of the conveying device and is used to control the operation of the push cylinder, so that the first supporting plate and the second supporting plate are opened to complete the unloading of goods.

[0015] After the present invention adopts the above structure, it has the following beneficial effects: Due to the structure in which two supporting plates are hinged to form a letter "y" shape and cooperate with the push cylinders on each floor to open and close the two supporting plates for loading and unloading goods, the function of transferring goods between different floors and automatically unloading goods is realized. It can not only transport goods from top to bottom to different floors, but also transport goods from bottom to top to different floors, effectively improving the automation degree of the conveying device and greatly enhancing the conveying efficiency of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic side structure view of an embodiment of the present invention.

[0017] Figure 2 is Figure 1 a schematic front structure view of the embodiment.

[0018] Figure 3 It is a schematic structure view of the conveying device of the present invention in the lifting state.

[0019] Figure 4 It is a schematic structure view of the conveying device of the present invention in the unloading state.

[0020] In the figure: 1. Conveyor device, 11. First pallet, 111. First pallet connection panel, 112. Bush, 113. First pallet spring fixing foot, 12. Second pallet, 121. Shaft head, 122. Second pallet spring fixing foot, 123. Flange, 13. Support rod, 131. Roller, 14. Chain connection plate, 141. Connection plate screw, 142. Chain pin shaft, 15. Spring; 2. Bracket, 21. Base plate, 22. Column, 23. Conveyor column, 231. Upper gear cavity, 232. Lower gear cavity, 233. Tensioning groove, 234. Lower fixing plate of screw rod, 235. Upper fixing plate of screw rod, 236. Adjusting screw rod, 2361. Nut, 24. Cross beam, 25. Upper gear, 26. Lower gear, 261. Lower gear bearing, 27. Chain, 28. Driving shaft, 281. Driving shaft bearing, 29. Tensioning shaft; 3. Building body, 31. Opening, 32. Pushing cylinder, 321. Pushing cylinder push rod, 33. Conveyor belt, 34. Position sensor; 4. Braking device, 41. Brake disc, 42. Brake arm, 421. Brake pad, 43. Brake arm seat, 44. Brake, 441. Brake push rod, 45. Brake mounting plate; 5. Driving mechanism, 51. Motor, 52. Reducing box, 53. Driving mounting plate; 6. Cloth roll. Embodiment

[0021] The following describes in detail the specific embodiments of the present invention in conjunction with the accompanying drawings. However, the description of the embodiments is not a limitation of the technical solution. Any change in form rather than substance based on the concept of the present invention should be regarded as the protection scope of the present invention.

[0022] In the following description, any concepts related to directions or orientations such as up, down, left, right, front, and back are based on the positions shown in the corresponding drawings. Therefore, they cannot be understood as special limitations on the technical solutions provided by the present invention.

[0023] Please refer to Figure 1 、 Figure 2 and in combination with Figure 3 and Figure 4, the present invention relates to a floor material conveying device, including a bracket 2, on which a pair of conveying columns 23 are formed. A chain 27 that rotates around the conveying column 23 is respectively arranged on the aforesaid conveying column 23; a set of conveying devices 1, the aforesaid conveying devices 1 are respectively fixed between the two chains 27 and arranged at intervals along the length direction of the chain 27. One side of the aforesaid conveying device 1 respectively abuts against the two conveying columns 23 and slides. The conveying device 1 includes a first supporting plate 11 and a second supporting plate 12. The aforesaid first supporting plate 11 and the second supporting plate 12 are hinged to each other to form a letter "y" - shaped structure, and the unloading and lifting of goods are realized by controlling the rotation and opening of the second supporting plate 12; a building body 3, an opening 31 is formed at each floor of the aforesaid building body 3. A push cylinder 32 that cooperates with the conveying device 1 to rotate and open the second supporting plate 12 to unload goods and a conveyor belt 33 for receiving goods are respectively arranged at the aforesaid opening 31; a driving mechanism 5, which is arranged on one side surface of the upper end of one of the conveying columns 23 and is in transmission connection with the chain 27.

[0024] Furthermore, the aforementioned bracket 2 includes a bottom plate 21 fixed on a horizontal base plane and beside the building body 3, and a pair of vertical columns 22 fixed on the bottom plate 21. The aforementioned conveying columns 23 are arranged on the side of the columns 22 facing the building body 3 and are respectively fixedly connected to the corresponding columns 22 through a group of cross beams 24. The aforementioned conveying columns 23 and the columns 22 are arranged parallel to each other. An upper gear cavity 231 is provided at the upper end of the aforementioned conveying column 23, and a lower gear cavity 232 is provided at the lower end. An upper gear 25 is respectively arranged in the aforementioned upper gear cavity 231. The aforementioned upper gears 25 are respectively fixed on a driving shaft 28 and are rotatably arranged on the conveying column 23 through the driving shaft 28. Both ends of the aforementioned driving shaft 28 respectively pass through a pair of conveying columns 23 on both sides and extend outwards. One end of the driving shaft 28 is in transmission connection with the driving mechanism 5. A pair of driving shaft bearings 281 are respectively arranged between the aforementioned driving shaft 28 and the pair of conveying columns 23. A lower gear 26 is respectively arranged in the aforementioned lower gear cavity 232. The aforementioned lower gears 26 are respectively rotatably arranged on a tensioning shaft 29. Both ends of the aforementioned tensioning shaft 29 respectively pass through a pair of conveying columns 23 on both sides and extend outwards. A lower gear bearing 261 is respectively arranged between the aforementioned lower gear 26 and the tensioning shaft 29. The aforementioned conveying column 23 is respectively provided with a tensioning groove 233 at both sides corresponding to the tensioning shaft 29, so that the tensioning shaft 29 can slide up and down along the tensioning groove 233. A screw upper fixing plate 235 and a screw lower fixing plate 234 are respectively fixed on one side of the aforementioned conveying column 23 above and below the tensioning groove 233. An adjusting screw 236 is respectively penetrated through the screw upper fixing plate 235 and the screw lower fixing plate 234. The adjusting screws 236 on the two aforementioned conveying columns 23 respectively pass through both ends of the tensioning shaft 29 and are in threaded connection with the tensioning shaft 29. A pair of nuts 2361 which are respectively matched and fixed with the screw upper fixing plate 235 and the screw lower fixing plate 234 are arranged on the aforementioned adjusting screw 236. The aforementioned chain 27 is respectively wound and meshed on the upper gears 25 and the lower gears 26 on the upper and lower sides of the conveying column 23, and the driving mechanism 5 drives the driving shaft 28 to rotate, thereby driving the upper gear 25 to rotate and driving the chain 27 to rotate.

[0025] In this embodiment, the aforementioned driving mechanism 5 includes a driving mounting plate 53 fixed to one of the conveying columns 23, a reduction box 52 fixed on the driving mounting plate 53, and a motor 51 fixed on the reduction box 52 and in transmission connection with the reduction box 52. The aforementioned reduction box 52 is in transmission connection with one end of the driving shaft 28 through a coupling.

[0026] Further, at the other end of the aforementioned driving shaft 28, a braking device 4 is provided which is fixed to another conveying column 23 thereof and symmetrically arranged with the driving mechanism 5. The aforementioned braking device 4 includes a brake disc 41 fixed to the end of the other end of the driving shaft 28, a brake mounting plate 45 located below the brake disc 41 and fixed to the corresponding conveying column 23, a brake 44 mounted on the brake mounting plate 45, a brake arm 42 cooperating with the brake 44, and a brake arm seat 43 mounted on the brake mounting plate 45 and hinged to the brake arm 42. At the upper end of the aforementioned brake arm 42, a brake pad 421 which is in frictional cooperation with the brake disc 41 is formed. At one end of the aforementioned brake 44, a pneumatically telescopic brake push rod 441 is provided. The aforementioned brake push rod 441 corresponds to the lower end of the brake arm 42. The aforementioned brake push rod 441 can push the brake arm 42 to rotate and make the brake pad 421 abut against the brake disc 41 to achieve frictional braking.

[0027] Please refer to Figure 3 and Figure 4 , on the side of the aforementioned first pallet 11 facing the conveying column 23, a pair of support rods 13 respectively abutting against the corresponding conveying column 23 are formed. At the upper and lower ends of the aforementioned support rods 13, a pair of rollers 131 which are rotatably arranged on the corresponding conveying column 23 are respectively formed. On both sides of the aforementioned support rods 13, a pair of chain connecting plates 14 are respectively arranged. One end of the aforementioned chain connecting plate 14 is fixed to the corresponding support rod 13 through a pair of connecting plate screws 141, and the other end is fixed to a pair of chain pins 142 on the chain 27. One side edge of the aforementioned first pallet 11 extends obliquely downward and is vertically bent to form a first pallet connecting panel 111. On both sides of the aforementioned first pallet connecting panel 111, a bushing 112 is respectively formed. At the positions corresponding to the bushings 112 on both sides of the middle of the aforementioned second pallet 12, a shaft head 121 which is in hinge cooperation with the bushing 112 is respectively formed. On both sides of the aforementioned first pallet 11 and the second pallet 12, a spring 15 is respectively arranged. On both sides of the aforementioned first pallet 11 at the bending position of the first pallet connecting panel 111, a first pallet spring fixing foot 113 is respectively formed. On both sides of the aforementioned second pallet 12 at the position beside the first pallet spring fixing foot 113, a second pallet spring fixing foot 122 is respectively formed. The two ends of the aforementioned spring 15 in the length direction are respectively pulled on the corresponding first pallet spring fixing foot 113 and the second pallet spring fixing foot 122, and can make the first pallet 11 and the second pallet 12 close together and lift the goods, as Figure 3 shown. At the lower edge of the aforementioned second pallet 12, a flange 123 is bent. On the aforementioned push cylinder 32, a push cylinder push rod 321 is formed. When the aforementioned push cylinder push rod 321 is pushed out, it can be inserted into the bending position between the second pallet 12 and the flange 123 and force the second pallet 12 to rotate and open, so that the goods slide from the second pallet 12 onto the corresponding conveyor belt 33, as Figure 4 shown.

[0028] Further, a position sensor 34 is respectively arranged below the opening 31 of the building body 3. The position sensor 34 can sense the passing of the conveying device 1 to control the operation of the push cylinder 32, specifically to control the movement of the push rod 32 of the push cylinder, so as to open the first support plate 11 and the second support plate 12 to complete the unloading of goods. In the prior art, there are many publicly disclosed position sensors 34 that can achieve the above functions, and the specific description is omitted here.

[0029] Please continue to refer to Figures 1 to 4 , and describe the working principle of the present invention: When it is necessary to convey the fabric roll 6, the fabric roll 6 is input by the conveyor belt 33 on the corresponding floor, so that the fabric roll 6 falls into the passing conveying device 1. The aforementioned conveying device 1 is driven by the chains 27 on both sides to rise or fall. Specifically: the aforementioned motor 51 operates, drives the reduction gearbox 52 to rotate the driving shaft 28, the aforementioned driving shaft 28 drives the upper gear 25 to rotate, so that a pair of chains 27 meshing with the upper gear 25 rotate around the corresponding conveying column 23. The aforementioned chains 27 drive the support rod 13 and the roller 131 to roll on the conveying column 23 through the chain connecting plate 14 to achieve vertical displacement. When the aforementioned conveying device 1 loaded with the fabric roll 6 moves to the floor where goods need to be unloaded, the aforementioned position sensor 34 senses the arrival of the conveying device 1 and controls the push rod 321 of the push cylinder 32 to push out. The aforementioned push rod 321 of the push cylinder abuts against the edge 123 of the second support plate 12, so that the second support plate 12 rotates clockwise around the shaft head 121 against the elastic force of the spring 15. At this time, the fabric roll 6 slides onto the conveyor belt 33 on this floor as the aforementioned second support plate 12 rotates, as Figure 4 shown, so as to realize the transfer of the fabric roll 6 between each floor. After the push rod 321 of the aforementioned push cylinder 32 is pushed out and retracted, at this time, the second support plate 12 rotates counterclockwise under the action of the pulling force of the spring 15 to achieve automatic reset. At this time, the first support plate 11 and the second support plate 12 can be closed and lift the goods, as Figure 3 shown. Cycle in sequence to realize automatic unloading and goods lifting on each floor. In the shutdown state, the aforementioned braking device 4 operates, so as to prevent the conveying device 1 from moving due to the action of gravity.

Claims

1. A floor material conveying device, characterized in that: It includes a bracket (2) on which a pair of conveying columns (23) are formed. A chain (27) that rotates around the conveying column (23) is respectively arranged on each of the conveying columns (23); a set of conveying devices (1) that are respectively fixed between the two chains (27) and arranged at intervals along the length direction of the chains (27). One side of each of the conveying devices (1) abuts against and slides on the two conveying columns (23). The conveying device (1) includes a first supporting plate (11) and a second supporting plate (12). The first supporting plate (11) and the second supporting plate (12) are hinged to each other, and the unloading and lifting of goods are realized by controlling the rotation and opening of the second supporting plate (12); a building floor (3) on each floor of which an opening (31) is formed. At the opening (31), a push cylinder (32) that cooperates with the conveying device (1) to rotate and open the second supporting plate (12) for unloading goods and a conveyor belt (33) for receiving goods are respectively arranged; a driving mechanism (5) that is arranged on one side surface of the upper end of one of the conveying columns (23) and is in transmission connection with the chain (27); one side edge of the first supporting plate (11) extends obliquely downward and is vertically bent to form a first supporting plate connecting panel (111). A bushing (112) is respectively formed on both sides of the first supporting plate connecting panel (111). Corresponding to the positions of the bushings (112), a shaft head (121) that is hinged and matched with the bushing (112) is respectively formed on both sides of the middle of the second supporting plate (12). Springs (15) are respectively arranged on both sides of the first supporting plate (11) and the second supporting plate (12). On both sides of the first supporting plate (11) at the bending position of the first supporting plate connecting panel (111), a first supporting plate spring fixing foot (113) is respectively formed. On both sides of the second supporting plate (12) at positions beside the first supporting plate spring fixing foot (113), a second supporting plate spring fixing foot (122) is respectively formed. The two ends of the spring (15) in the length direction are respectively pulled on the corresponding first supporting plate spring fixing foot (113) and second supporting plate spring fixing foot (122), which can make the first supporting plate (11) and the second supporting plate (12) close together and lift the goods; a baffle (123) is bent at the lower edge of the second supporting plate (12). A push cylinder push rod (321) is formed on the push cylinder (32). When the push cylinder push rod (321) is pushed out, it can be inserted into the bending position between the second supporting plate (12) and the baffle (123) and force the second supporting plate (12) to rotate and open, so that the goods slide from the second supporting plate (12) onto the corresponding conveyor belt (33).

2. The floor material conveying device according to claim 1, wherein: The first supporting plate (11) and the second supporting plate (12) form a structure in the shape of the letter "y".

3. A floor material conveying device according to claim 1, characterized in that: The bracket (2) includes a bottom plate (21) fixed on a horizontal base plane and beside the building body (3), and a pair of vertical columns (22) fixed on the bottom plate (21). The conveying columns (23) are arranged on the side of the columns (22) facing the building body (3) and are respectively fixedly connected to the corresponding columns (22) through a group of cross beams (24). The conveying columns (23) and the columns (22) are arranged parallel to each other. An upper gear cavity (231) is opened at the upper end of the conveying column (23), and a lower gear cavity (232) is opened at the lower end. An upper gear (25) is respectively arranged in the upper gear cavity (231). The upper gears (25) are respectively fixed on a driving shaft (28) and are rotatably arranged on the conveying column (23) through the driving shaft (28). The two ends of the driving shaft (28) respectively pass through a pair of conveying columns (23) on both sides and extend outwards. One end of the driving shaft (28) is in transmission connection with the driving mechanism (5). A pair of driving shaft bearings (281) are respectively arranged between the driving shaft (28) and the pair of conveying columns (23). A lower gear (26) is respectively arranged in the lower gear cavity (232). The lower gears (26) are respectively rotatably arranged on a tensioning shaft (29). The two ends of the tensioning shaft (29) respectively pass through a pair of conveying columns (23) on both sides and extend outwards. A lower gear bearing (261) is respectively arranged between the lower gear (26) and the tensioning shaft (29). Tensioning grooves (233) are respectively opened at the positions on both sides of the conveying column (23) corresponding to the tensioning shaft (29), so that the tensioning shaft (29) can slide up and down along the tensioning grooves (233). A screw upper fixing plate (235) and a screw lower fixing plate (234) are respectively fixed on one side of the conveying column (23) above and below the tensioning groove (233). An adjusting screw (236) is respectively penetrated through the screw upper fixing plate (235) and the screw lower fixing plate (234). The adjusting screws (236) on the two conveying columns (23) respectively pass through the two ends of the tensioning shaft (29) and are in threaded connection with the tensioning shaft (29). A pair of nuts (2361) which are respectively matched and fixed with the screw upper fixing plate (235) and the screw lower fixing plate (234) are arranged on the adjusting screw (236). The chain (27) respectively surrounds and meshes with the upper gears (25) and the lower gears (26) on the upper and lower sides of the conveying column (23), and the driving mechanism (5) drives the driving shaft (28) to rotate, thereby driving the upper gears (25) to rotate and driving the chain (27) to rotate.

4. A floor material conveying device according to claim 1, characterized in that: The driving mechanism (5) includes a driving mounting plate (53) fixed to one of the conveying columns (23), a reduction box (52) fixed on the driving mounting plate (53), and a motor (51) fixed on the reduction box (52) and in transmission connection with the reduction box (52). The reduction box (52) is in transmission connection with one end of the driving shaft (28) through a coupling.

5. The floor material conveying device according to claim 3, wherein: At the other end of the driving shaft (28), a braking device (4) is provided, which is fixed on another conveying column (23) and symmetrically arranged with the driving mechanism (5). The braking device (4) includes a braking disc (41) fixed at the end of the other end of the driving shaft (28), a braking mounting plate (45) located below the braking disc (41) and fixed to the corresponding conveying column (23), a brake (44) mounted on the braking mounting plate (45), a braking arm (42) cooperating with the brake (44), and a braking arm seat (43) mounted on the braking mounting plate (45) and hinged to the braking arm (42). The upper end of the braking arm (42) is formed with a braking piece (421) in frictional cooperation with the braking disc (41). One end of the brake (44) is provided with a pneumatically telescopic brake push rod (441), and the brake push rod (441) corresponds to the lower end of the braking arm (42). The brake push rod (441) can push the braking arm (42) to rotate and make the braking piece (421) abut against the braking disc (41) to achieve frictional braking.

6. The floor material conveying device according to claim 1, characterized in that: On the side of the first support plate (11) facing the conveying column (23), a pair of support rods (13) are formed, which respectively abut against the corresponding conveying columns (23). At the upper and lower ends of the support rods (13), a pair of rollers (131) are respectively formed and rollingly arranged on the corresponding conveying columns (23). On both sides of the support rods (13), a pair of chain connecting plates (14) are respectively arranged. One end of the chain connecting plate (14) is fixed to the corresponding support rod (13) through a pair of connecting plate screws (141), and the other end is fixed to a pair of chain pins (142) on the chain (27).

7. The floor material conveying device according to claim 1, characterized in that: Below the opening (31) of the building body (3), a position sensor (34) is respectively provided. The position sensor (34) can sense the passing of the conveying device (1) to control the operation of the push cylinder (32), so as to open the first support plate (11) and the second support plate (12) to complete the unloading of goods.

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