Permanent magnet direct drive foundationless scalable belt conveyor

Abstract

The application discloses a kind of based on permanent magnet direct drive no foundation telescopic belt conveyor, including conveyor body, telescopic device, unloading part, base, support plate, the plurality of connecting rods are fixedly connected with base one end.The cooperation of limiting rod, limiting slot, positioning rod and threaded rod is used in the application, when the user needs to connect base, by inserting connecting rod into the inside of connecting slot, then rotating single threaded rod, threaded rod can drive multiple limiting rods and multiple connecting rods inside limiting slot are connected, while protrusion is extruded positioning rod to move in the process of descending, when the bottom of protrusion contacts with limiting slot, spring can rebound to drive positioning rod into positioning slot inside at this time, to complete the fixation of limiting rod, so that the user can quickly complete the installation between base by rotating single threaded rod, to reduce the time required by user disassembly, to improve the utilization of equipment.

Description

Technical Field

[0001] This invention relates to the field of foundationless belt conveyor technology, specifically a foundationless retractable belt conveyor based on permanent magnet direct drive. Background Technology

[0002] Large and extra-large modern coal mines are an inevitable development trend. The trend towards larger and more automated mining equipment is evident, significantly increasing the production capacity of coal mining faces. The use of extendable belt conveyors in roadway faces is developing towards larger capacity, longer distances, and higher belt speeds. Traditional long-distance, large-specification roadway extendable belt conveyors, due to their structural limitations, typically require the construction of concrete foundations and the pre-embedded anchor bolts to fix the conveyor head section to the roadway floor to balance belt tension and ensure stable and reliable operation. However, this involves a large amount of initial civil engineering work, a long construction period, and high overall costs. Furthermore, once the conveyor head section is fixed, its length cannot be changed, resulting in long coal pillars at the working face and hindering effective mining, leading to resource waste and significant losses for coal mining enterprises. To reduce installation costs, an integrated and modular design of the conveyor head section is needed. Utilizing the principle of force balance and adopting a reasonable structural form, the internal and external forces on the conveyor can be mutually offset, achieving force balance and preventing slippage and overturning, ultimately achieving foundation-free installation. It not only significantly shortens the civil engineering cycle, reduces upfront costs, and improves dismantling and assembly efficiency, but also reduces the reserved length of coal pillars in roadways, effectively shortens the shutdown line, greatly reduces resource waste, increases coal recovery rate, and enables coal mining enterprises to obtain good economic and social benefits.

[0003] However, in the current assembly installation process of foundationless telescopic belt conveyors, the base plate is usually segmented. It is typically transported to a designated location by transport equipment, and then connected by the user using screws and bolts. Since the base plate is relatively long, the user needs to install a large number of screws during the connection process, which consumes a lot of time and does not improve the efficiency of the belt conveyor. This reduces the efficiency of coal transportation to a certain extent. Summary of the Invention

[0004] The purpose of this invention is to provide a foundationless retractable belt conveyor based on permanent magnet direct drive to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a foundationless telescopic belt conveyor based on permanent magnet direct drive, comprising a conveyor body, a telescopic device disposed inside the conveyor body, an unloading part disposed inside the conveyor body, a base disposed at the bottom of the conveyor body, and the base having multiple components, a support plate fixedly connected to the outer wall of the conveyor body, multiple connecting rods fixedly connected to one end of the base, and multiple connecting grooves fixedly connected to the other end of the base, a first mounting groove being formed inside the base near the connecting groove, a mounting plate being slidably connected inside the first mounting groove, multiple limiting rods being fixedly connected at equal intervals at the bottom of the mounting plate, multiple limiting grooves being formed at equal intervals inside the base, multiple second mounting grooves being formed at equal intervals inside the base, a fixing block being fixedly connected inside each of the multiple second mounting grooves, a positioning rod being slidably connected to one end of the fixing block, the other end of the positioning rod penetrating and extending to the other end of the fixing block, and a matching positioning groove being formed at the end of each of the multiple limiting rods near the positioning rod.

[0006] Furthermore, the conveyor body is threadedly connected to the base via screws, and the outer wall dimensions of the multiple connecting rods are adapted to the inner wall dimensions of the connecting grooves. A threaded rod is rotatably connected to the top of the mounting plate, and an internal thread adapted to the threaded rod is opened inside the base. The threaded rod is threadedly connected to the base via the internal thread, and the top of the threaded rod passes through and extends to the top of the base. The user can drive the mounting plate to move by rotating the threaded rod, thereby enabling the mounting plate to drive multiple limiting rods to connect with the limiting grooves, thus completing the connection between the bases.

[0007] Furthermore, each of the limiting rods has a protrusion fixedly connected to its bottom. The protrusion is arc-shaped, and the arc-shaped protrusion can squeeze the positioning rod during downward movement, thereby facilitating the movement of the positioning rod and enabling the subsequent positioning rod to limit the limiting rod, thus preventing the limiting rod from moving longitudinally.

[0008] Furthermore, a first slider is fixedly connected to the outer wall of the positioning rod, and a first groove adapted to the first slider is provided inside the base. The positioning rod is slidably connected to the first slider and the first groove. Through the cooperation between the first slider and the first groove, the positioning rod can have stability during movement.

[0009] Furthermore, a spring is sleeved on the outside of the positioning rod. One end of the spring is fixedly connected to the fixing block, and the other end of the spring is fixedly connected to the first slider. The top of the end of the multiple positioning rods near the limiting rod is set to an arc shape. When the positioning rod and the positioning groove move to the same horizontal height, the spring can rebound and drive the positioning rod to reset, so that the positioning rod can connect with the positioning groove, thereby limiting the position of the limiting rod and the threaded rod, thus preventing the threaded rod from moving.

[0010] Furthermore, the second mounting groove is L-shaped. One end of the positioning rod is fixedly connected to a connecting rope, and the other end of the connecting rope is fixedly connected to a pull block. The pull block is located at the top of the base. By pulling the pull block, the user can move the connecting rope and the positioning rod, thereby facilitating the removal of the positioning rod from the positioning groove and the removal of the limiting rod from the limiting groove, thus facilitating the removal of the connection between the bases.

[0011] Furthermore, the first mounting slot is connected to the second mounting slot, and the first mounting slot is connected to the limiting slot. The connection between the first mounting slot, the second mounting slot, and the limiting slot facilitates the movement of the limiting rod and the positioning rod.

[0012] Furthermore, the support plate is U-shaped, with a motor fixedly mounted on its top. A first rotating shaft is fixedly connected to the motor's output end, and a first bevel gear is fixedly connected to the bottom of the first rotating shaft. Two second rotating shafts are symmetrically rotatably connected to both ends of the support plate. A first gear is fixedly connected to the outer wall of each of the two second rotating shafts, and a second bevel gear meshing with the first bevel gear is fixedly connected to the end of each of the two second rotating shafts near the first bevel gear. A collection box is provided at the bottom of the support plate, with multiple interconnected dust collection pipes fixedly installed at equal intervals at the bottom of the collection box. A dust collection hose is fixedly connected to the top of the collection box, and an exhaust device is fixedly connected to the other end of the dust collection hose. The U-shaped support plate facilitates the blocking of dust generated at the front of the transport section, while the exhaust device enables centralized collection and treatment of dust, thereby preventing dust from harming the human body and improving equipment safety.

[0013] Furthermore, the first gear is externally meshed with a transmission belt, and two ball screws are symmetrically rotatably connected to both ends of the support plate. A second gear is fixedly connected to the outer wall of each of the two ball screws. The first gear is connected to the second gear via the transmission belt. A matching screw nut sleeve is fitted onto the outer surface of each of the two ball screws, extending through and into the collection box. A blocking block is fixedly connected to the end of the screw nut sleeve closest to the motor. Two support rods are symmetrically fixedly connected to the top of the collection box, and the tops of the support rods are fixedly connected to the support plate. Two second sliding grooves are symmetrically formed inside the collection box. The movement of the ball screws can simultaneously move the two screw nut sleeves, allowing the two blocking blocks to move in the same or opposite directions. This facilitates user adjustment of the suction range, ensuring the dust collection quality of the equipment.

[0014] Furthermore, a second slider is fixedly connected to the outer wall of the lead screw nut sleeve. The lead screw nut sleeve is slidably connected to the second slide groove through the second slider. The cooperation between the second slider and the second slide groove enables the lead screw nut sleeve to have stability during movement.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] 1. This invention utilizes a combination of limiting rods, limiting grooves, positioning rods, and threaded rods. When a user needs to connect multiple bases, they can insert a connecting rod into the connecting groove and then rotate a single threaded rod. This causes the threaded rod to drive multiple limiting rods to connect with the limiting grooves inside the connecting rods. Simultaneously, as the protrusion descends, it presses against the positioning rod, causing it to move. When the bottom of the protrusion contacts the limiting groove, a spring rebounds, driving the positioning rod into the positioning groove, thus fixing the limiting rod and ensuring the stability of the threaded rod. This allows the user to quickly install the bases by rotating a single threaded rod, reducing the time required for assembly and disassembly, and improving equipment utilization.

[0017] 2. This invention utilizes the combined use of a ball screw, a screw nut sleeve, and a blocking block. When coal is fed into the front end of the transport section, a support plate prevents dust from overflowing. Simultaneously, the user can extract dust from inside the support plate by activating the exhaust device, thus collecting the dust. Furthermore, the user can adjust the suction range of the dust collection pipe according to the size of the coal pile. This allows the user to adjust the suction range of the dust collection pipe by changing the rotation direction of the ball screw, ensuring the quality of dust collection and improving equipment safety. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the connection between the two bases of the present invention;

[0021] Figure 3 yes Figure 2 Enlarged view of the structure at point A;

[0022] Figure 4 This is a cross-sectional structural diagram of the present invention when the two bases are not fixedly connected;

[0023] Figure 5This is a partial side view cross-sectional structural schematic diagram of the conveyor body of the present invention;

[0024] Figure 6 yes Figure 5 Enlarged view of the structure at point B.

[0025] In the diagram: 1. Conveyor body; 2. Telescopic device; 3. Unloading section; 4. Base; 5. Support plate; 6. Connecting rod; 7. Connecting groove; 8. First mounting groove; 9. Mounting plate; 10. Limiting rod; 11. Limiting groove; 12. Second mounting groove; 13. Fixing block; 14. Positioning rod; 15. Positioning groove; 16. Threaded rod; 17. Internal thread; 18. Protrusion; 19. First slider; 20. First slide groove; 21. Spring; 22. 23. Connecting rope; 24. Pull block; 25. Motor; 26. First rotating shaft; 27. First bevel gear; 28. Second rotating shaft; 29. ​​First gear; 20. Second bevel gear; 31. Collection box; 32. Dust collection pipe; 33. Dust collection hose; 34. Exhaust device; 35. Transmission belt; 36. Ball screw; 37. Second gear; 38. Screw nut sleeve; 39. Blocking block; 40. Support rod; 41. Second slide groove; 42. Second slider. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1 - Figure 4This invention provides a technical solution: a foundationless telescopic belt conveyor based on permanent magnet direct drive, comprising a conveyor body 1, a telescopic device 2 disposed inside the conveyor body 1, an unloading part 3 disposed inside the conveyor body 1, a base 4 disposed at the bottom of the conveyor body 1, and the base 4 having multiple components, a support plate 5 fixedly connected to the outer wall of the conveyor body 1, multiple connecting rods 6 fixedly connected to one end of the base 4, multiple connecting grooves 7 fixedly connected to the other end of the base 4, and a first mounting groove 8 opened inside the base 4 near the connecting grooves 7, wherein a sliding connection is provided inside the first mounting groove 8. A mounting plate 9 is attached, with multiple limiting rods 10 fixedly connected at equal intervals at the bottom of the mounting plate 9. Each limiting rod 10 has a protrusion 18 fixedly connected to its bottom. The protrusion 18 is arc-shaped. Multiple limiting grooves 11 and multiple second mounting grooves 12 are equally spaced inside the base 4. The second mounting grooves 12 are L-shaped. A connecting rope 22 is fixedly connected to one end of a positioning rod 14, and a pull block 23 is fixedly connected to the other end of the connecting rope 22. The pull block 23 is located at the top of the base 4. Fixing blocks 13 are fixedly connected inside each of the multiple second mounting grooves 12. A positioning rod 14 is slidably connected to one end of the positioning rod 14, and a first slider 19 is fixedly connected to the outer wall of the positioning rod 14. A first groove 20 adapted to the first slider 19 is opened inside the base 4. The positioning rod 14 is slidably connected to the first groove 20 through the first slider 19. A spring 21 is sleeved on the outside of the positioning rod 14. One end of the spring 21 is fixedly connected to the fixing block 13, and the other end of the spring 21 is fixedly connected to the first slider 19. The top of the end of the multiple positioning rods 14 near the limiting rod 10 is all set to be arc-shaped, and the other end of the positioning rod 14 passes through and extends to the other end of the fixing block 13. Each of the limiting rods 10 near the positioning rod 14 has a matching positioning groove 15. The conveyor body 1 is threaded to the base 4 by screws. The outer wall size of multiple connecting rods 6 is matched with the inner wall size of the connecting groove 7. The top of the mounting plate 9 is rotatably connected to a threaded rod 16. The base 4 has an internal thread 17 that matches the threaded rod 16. The threaded rod 16 is threaded to the base 4 through the internal thread 17. The top of the threaded rod 16 passes through and extends to the top of the base 4. The first mounting groove 8 is connected to the second mounting groove 12. The first mounting groove 8 is connected to the limiting groove 11.

[0028] The specific implementation method is as follows: When the user needs to install the conveyor body 1, the user first connects multiple bases 4, and then installs the conveyor body 1 on top of the bases 4 to complete the installation of the conveyor body 1. When the user needs to connect the bases 4, the user first inserts the connecting rod 6 at one end of the base 4 into the connecting groove 7. Then, the user can rotate a single threaded rod 16, causing the threaded rod 16 to move downward along the internal thread 17 inside the base 4. During the rotation of the threaded rod 16, the mounting plate 9, the limiting rod 10, and the protrusion 18 move downward smoothly. During the downward movement, the protrusion 18 will squeeze the positioning rod 14. When the positioning rod 14 is squeezed by the protrusion 18, the positioning rod 14 slides along the first slide groove 20 through the first slider 19. At the same time, the first slider 19 will squeeze the spring 21 during the movement, causing the spring 21 to be in a contracted state. Meanwhile, during the downward movement of the limiting rod 10, the protrusion 18 will be driven into the limiting groove 11, so that the limiting rod 10 can position the connecting rod 6. The system is fixed in place to complete the connection between multiple bases 4. When the bottom of the protrusion 18 contacts the inner wall of the limiting groove 11, the positioning rod 14 and the positioning groove 15 move to the same horizontal height. At this time, the spring 21 rebounds and drives the positioning rod 14 to reset, allowing the positioning rod 14 to enter the interior of the positioning groove 15. This further enhances the stability of the limiting rod 10 and prevents the threaded rod 16 from moving due to vibration during use, thus ensuring the stability of the connection between multiple bases 4. When the user needs to disassemble the base 4, the user first pulls the pull block 23, which drives the connecting rope 22 to pull the positioning rod 14, thereby pulling the positioning rod 14 out of the positioning groove 15. Then, the user can rotate the threaded rod 16 in the opposite direction, which causes the threaded rod 16 to pull the mounting plate 9 and multiple limiting rods 10 out of the limiting groove 11, making it convenient for the user to disassemble the bases 4. This allows the user to quickly connect the bases 4 using a single threaded rod 16, reducing the time required for disassembly and assembly and improving the utilization rate of the equipment.

[0029] Please see Figure 1 , Figure 5 as well as Figure 6The present invention provides a technical solution: a foundationless retractable belt conveyor based on permanent magnet direct drive. The support plate 5 is U-shaped, with a motor 24 fixedly mounted on its top. A first rotating shaft 25 is fixedly connected to the output end of the motor 24. A first bevel gear 26 is fixedly connected to the bottom of the first rotating shaft 25. Two second rotating shafts 27 are symmetrically rotatably connected to both ends of the support plate 5. A first gear 28 is fixedly connected to the outer wall of each of the two second rotating shafts 27. A second bevel gear 29, meshing with the first bevel gear 26, is fixedly connected to the end of each of the two second rotating shafts 27 near the first bevel gear 26. A collection box 30 is provided at the bottom of the support plate 5. Multiple interconnected dust collection pipes 31 are fixedly mounted at equal intervals at the bottom of the collection box 30. A dust collection hose 32 is fixedly connected to the top of the collection box 30, and an exhaust device 33 is fixedly connected to the other end of the dust collection hose 32. Gear 28 is externally meshed with a transmission belt 34. Two ball screws 35 are symmetrically rotatably connected to both ends of the support plate 5. A second gear 36 is fixedly connected to the outer wall of each ball screw 35. The first gear 28 is connected to the second gear 36 via the transmission belt 34. A matching screw nut sleeve 37 is fitted on the outside of each ball screw 35. The screw nut sleeve 37 passes through and extends into the inside of the collection box 30. A blocking block 38 is fixedly connected to the end of the screw nut sleeve 37 near the motor 24. Two support rods 39 are symmetrically fixedly connected to the top of the collection box 30. The top of the support rods 39 is fixedly connected to the support plate 5. Two second slide grooves 40 are symmetrically opened inside the collection box 30. A second slider 41 is fixedly connected to the outer wall of the screw nut sleeve 37. The screw nut sleeve 37 is slidably connected to the second slide groove 40 via the second slider 41.

[0030] The specific implementation method is as follows: When coal falls onto the front transport section of the conveyor body 1, a large amount of dust will be stirred up, which may harm human health. When the coal falls onto the front of the conveyor body 1, the user can turn on the exhaust device 33, which includes a negative pressure fan and a collection box. The exhaust device 33 then extracts the dust from the top of the front transport section through the dust collection hose 32, the collection box 30, and the dust collection pipe 31, so that the dust can be collected in the collection box inside the exhaust device 33. At the same time, in order to ensure the efficiency of dust collection by the dust collection pipe 31, when there is less coal at the front of the transport section, the user can turn on the motor 24 to drive the first rotating shaft 25 and the first bevel gear 26 to rotate. The first bevel gear 26 can then drive the second bevel gear 29, the second rotating shaft 27, and the first gear 28 to rotate. Then, the first gear 28 drives the second gear 36 to rotate via the transmission belt 34. The second gear 36 then drives the two ball screws 35 to rotate simultaneously. At this time, the two ball screws 35 simultaneously drive the two screw nut sleeves 37 to move. Since the two ball screws 35 have the same thread direction but different rotation directions, the two screw nut sleeves 37 will move in the same or opposite directions simultaneously. The screw nut sleeves 37 will move smoothly through the cooperation of the second slider 41 and the second slide groove 40. The blocking block 38 can block the bottom dust collection pipe 31, so that the user can adjust the exhaust range of the bottom dust collection pipe 31 according to the size of the coal pile, thereby ensuring the exhaust quality of the dust collection pipe 31, preventing dust from overflowing and causing harm to the human body, and thus improving the safety of the equipment.

[0031] Working principle of the invention:

[0032] Reference Figure 1 - Figure 4 Through the coordinated use of the limiting rod 10, limiting groove 11, positioning rod 14, and threaded rod 16, when the user needs to connect multiple bases 4, the user can insert the connecting rod 6 into the connecting groove 7, and then rotate a single threaded rod 16, so that the threaded rod 16 can drive multiple limiting rods 10 to connect with the limiting grooves 11 inside the multiple connecting rods 6. At the same time, the protrusion 18 will squeeze the positioning rod 14 to move during the descent. When the bottom of the protrusion 18 contacts the limiting groove 11, the spring 21 can rebound and drive the positioning rod 14 into the positioning groove 15, thereby completing the fixation of the limiting rod 10, thus ensuring the stability of the threaded rod 16. This allows the user to quickly complete the installation between the bases 4 by rotating a single threaded rod 16, thereby reducing the time required for user disassembly and assembly, and thus improving the utilization rate of the equipment.

[0033] Further, please refer to the appendix to the instruction manual. Figure 1 , Figure 5 as well as Figure 6 Through the coordinated use of the ball screw 35, screw nut sleeve 37, and blocking block 38, when the coal is fed into the front end of the transport section, the support plate 5 can prevent dust from overflowing. At the same time, the user can extract the dust inside the support plate 5 by opening the exhaust device 33, thereby collecting the dust. Furthermore, the user can adjust the dust collection range of the dust collection pipe 31 according to the size of the coal pile. This allows the user to adjust the dust collection range of the dust collection pipe 31 by changing the rotation direction of the ball screw 35, thereby ensuring the quality of dust collection by the dust collection pipe 31 and improving the safety of the equipment.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A foundationless retractable belt conveyor based on permanent magnet direct drive, comprising a conveyor body (1); The telescopic device (2) is located inside the conveyor body (1); The unloading unit (3) is located inside the conveyor body (1); A base (4) is provided at the bottom of the conveyor body (1), and multiple bases (4) are provided; Support plate (5) is fixedly connected to the outer wall of the conveyor body (1); Its features are: One end of the base (4) is fixedly connected to multiple connecting rods (6), and the other end of the base (4) is fixedly connected to multiple connecting slots (7). A first mounting slot (8) is opened inside the base (4) near the connecting slot (7). A mounting plate (9) is slidably connected inside the first mounting slot (8). Multiple limiting rods (10) are fixedly connected at equal intervals at the bottom of the mounting plate (9). Multiple limiting slots (11) are opened at equal intervals inside the base (4). Multiple second mounting slots (12) are opened at equal intervals inside the base (4). Each of the multiple second mounting slots (12) is fixedly connected to a fixed rod. The fixed block (13) has a slidably connected positioning rod (14) at one end, and the other end of the positioning rod (14) extends through and to the other end of the fixed block (13). The multiple limiting rods (10) have matching positioning grooves (15) at the ends near the positioning rods (14). The conveyor body (1) is threadedly connected to the base (4) by screws. The outer wall dimensions of the multiple connecting rods (6) are matched with the inner wall dimensions of the connecting grooves (7). The top of the mounting plate (9) is rotatably connected to a threaded rod (16). The base (4) has an internal thread that matches the threaded rod (16). (17) The threaded rod (16) is threaded to the base (4) through the internal thread (17). The top of the threaded rod (16) extends through and to the top of the base (4). The bottom of each of the multiple limiting rods (10) is fixedly connected to a protrusion (18). The protrusion (18) is arc-shaped. The support plate (5) is U-shaped. A motor (24) is fixedly installed on the top of the support plate (5). The output end of the motor (24) is fixedly connected to a first rotating shaft (25). The bottom of the first rotating shaft (25) is fixedly connected to a first bevel gear (26). The two ends of the support plate (5) rotate symmetrically. Two second rotating shafts (27) are connected. A first gear (28) is fixedly connected to the outer wall of each of the two second rotating shafts (27). A second bevel gear (29) that meshes with the first bevel gear (26) is fixedly connected to the end of each of the two second rotating shafts (27) near the first bevel gear (26). A collection box (30) is provided at the bottom of the support plate (5). Multiple interconnected dust collection pipes (31) are fixedly installed at equal intervals at the bottom of the collection box (30). A dust collection hose (32) is fixedly connected to the top of the collection box (30). A ventilation device (33) is fixedly connected to the other end of the dust collection hose (32).The first gear (28) is externally meshed with a transmission belt (34). Two ball screws (35) are symmetrically rotatably connected to both ends of the support plate (5). A second gear (36) is fixedly connected to the outer wall of each of the two ball screws (35). The first gear (28) is connected to the second gear (36) via the transmission belt (34). A matching screw nut sleeve (37) is fitted onto the outer surface of each of the two ball screws (35). The screw nut sleeve (37) extends through and into the collection box (30). A blocking block (38) is fixedly connected to the end of the screw nut sleeve (37) closest to the motor (24). Two support rods (39) are symmetrically fixedly connected to the top of the collection box (30). The top of the support rods (39) is fixedly connected to the support plate (5). Two second sliding grooves (40) are symmetrically opened inside the collection box (30).

2. The foundationless retractable belt conveyor based on permanent magnet direct drive according to claim 1, characterized in that: The positioning rod (14) is fixedly connected to the outer wall of the first slider (19), and the base (4) has a first groove (20) adapted to the first slider (19) inside. The positioning rod (14) is slidably connected to the first groove (20) through the first slider (19).

3. A foundationless retractable belt conveyor based on permanent magnet direct drive according to claim 2, characterized in that: The positioning rod (14) is fitted with a spring (21). One end of the spring (21) is fixedly connected to the fixing block (13), and the other end of the spring (21) is fixedly connected to the first slider (19). The top of the end of the multiple positioning rods (14) near the limiting rod (10) is set to be arc-shaped.

4. A foundationless extendable belt conveyor based on permanent magnet direct drive according to claim 1, characterized in that: The second mounting groove (12) is L-shaped. One end of the positioning rod (14) is fixedly connected to a connecting rope (22), and the other end of the connecting rope (22) is fixedly connected to a pull block (23). The pull block (23) is located on the top of the base (4).

5. A foundationless extendable belt conveyor based on permanent magnet direct drive according to claim 1, characterized in that: The first mounting slot (8) is connected to the second mounting slot (12), and the first mounting slot (8) is connected to the limiting slot (11).

6. A foundationless extendable belt conveyor based on permanent magnet direct drive according to claim 1, characterized in that: The outer wall of the lead screw nut sleeve (37) is fixedly connected to a second slider (41), and the lead screw nut sleeve (37) is slidably connected to the second slide groove (40) through the second slider (41).

Images