Novel monorail crane hoist for material containers

Abstract

The present application relates to container sling technical field, specifically speaking, it is a kind of new monorail crane sling for material container;Including upper beam and the lower beam being rotatably connected by main motor below the upper beam;The upper beam is connected with cable through pulley;The lower beam lower surface four corner positions are provided with angle groove;The left end inside of the lower beam is provided with the drive slot being communicated with two angle grooves;The upper end of the angle groove is rotatably connected with lock seat;The lower end of the lock seat is connected with the spin lock extending to the lower angle groove;Double-head oil cylinder is fixedly connected in the drive slot inner wall;The present application is matched with the inner mouth of container by positioning strip, inclined strip, realizes the accurate alignment of spin lock and lock groove from the inside of container, compared with the existing outside overturning guide positioning mode, without sufficient activity space in the periphery of container, can be used normally in the narrow environment of underground in the insufficient space around container, avoid jam and alignment deviation, and then improve docking operation efficiency, satisfy the precise lifting demand.

Description

Technical Field

[0001] This invention relates to the field of container lifting equipment technology, specifically a novel monorail lifting equipment for material containers. Background Technology

[0002] In coal mines, auxiliary material transportation typically employs a monorail crane in conjunction with a top-opening material container. The monorail crane uses cables to pull the spreader for lifting and lowering. Locks are positioned at the four corners of the spreader for connection. The container has an open top for easy loading and unloading, with rectangular locking slots on the inside of the opening. As the spreader descends, the four corner locks engage with the rectangular locking slots, and by rotating the locks 90°, the spreader and container are locked together, thus enabling the lifting and transfer of the material container.

[0003] During the process of the spreader descending and driving the four corner lock heads into the lock slots, the swaying of the cables and spreader makes it impossible for the four corner lock heads to quickly and accurately align with the rectangular lock slots on the container. This not only significantly reduces the efficiency of container lifting and docking operations, but also easily leads to problems such as jamming, alignment deviation, or even docking failure, making it difficult to meet the actual needs of precise lifting operations of monorail gantry cranes in coal mines.

[0004] The spreaders found generally use externally reversible guide plates or positioning strips for alignment and guidance. They rely on the guide structure to engage and limit the container from the outside, thereby achieving initial alignment of the lock head and lock groove. This externally guided positioning method requires sufficient unfolding space around the container to function properly. However, the narrow space and complex on-site conditions in underground coal mines cannot provide enough space for the externally guided structure to rotate and move. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a novel monorail lifting device for material containers. This invention uses positioning bars and diagonal bars to cooperate with the inner opening of the container, achieving precise alignment of the turnlock and locking groove from the inside of the container. Compared with the existing external flipping guide positioning method, it does not require sufficient space around the container and can be used normally in narrow underground environments with insufficient space around the container, avoiding jamming and alignment deviation, thereby improving docking efficiency and meeting the requirements for precise lifting.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A novel monorail lifting device for material containers, comprising an upper beam and a lower beam rotatably connected to the upper beam via a main motor; the upper beam is connected to a cable via pulleys; corner grooves are provided at the four corner positions on the lower surface of the lower beam; a drive groove communicating with two corner grooves is provided inside the left end of the lower beam; a lock seat is rotatably connected to the upper end of the corner groove; a turnlock extending to the lower part of the lock seat is connected to the lower end of the lock seat; a double-headed hydraulic cylinder is fixedly connected to the inner wall of the drive groove; the double-headed hydraulic cylinder... The two ends of the lock are hinged to connecting strips; the ends of the connecting strips are hinged to rotating strips on the lock seat; the rotary lock is composed of a lock bar and an inverted conical lock head; the outer wall of the lock head has symmetrical notches; the cross-section of the lock head is rectangular and compatible with the cross-section of the lock groove on the container; the lower beam is fixed to positioning seats in the front, back, left and right directions; the positioning seats are connected to positioning strips downwards; the cross-section enclosed by the outer edges of the four positioning strips is compatible with the inner cross-section of the container; the lower end of the positioning strip is inclined inwards with a diagonal strip; the lower end of the positioning strip is lower than the lock head in the vertical direction.

[0007] Preferably, the lower surface of the positioning seat is provided with a positioning groove; a reset plate is slidably connected in the positioning groove; the upper surface of the reset plate is connected to the bottom of the positioning groove by a reset spring; and the upper end of the positioning strip is connected to the reset plate.

[0008] Preferably, the inner wall of the positioning groove is symmetrically provided with inclined grooves; a movable block is movably connected in the inclined groove; the upper end of the two positioning strips extends into the inclined groove and is fixedly connected to the corresponding movable block; the inclined grooves connected to the two positioning strips are distributed in an inverted V-shape.

[0009] Preferably, the positioning strip is fixedly connected to a limiting block on its outer wall away from the center of the lower beam; the limiting block is provided with a distance from both the upper and lower ends of the positioning strip.

[0010] Preferably, the positioning strip has an inverted trapezoidal groove at its upper end; the inverted trapezoidal groove is slidably connected to the inverted trapezoidal strip fixed to the lower surface of the reset plate.

[0011] Preferably, the inclined groove is corrugated and inclined; the movable block is circular; the movable block oscillates up and down as it moves along the inclined groove.

[0012] Preferably, the end of the inclined strip is provided with an extension groove along the inclined direction; an extension strip is slidably connected in the extension groove; the bottom of the extension groove and the extension strip are connected by an extension spring.

[0013] Preferably, the inclined strip passes through the through groove on the lower inner wall of the extension groove; a corresponding through strip is movably connected in the through groove; the through strip is fixedly connected to the extension strip; the cross-section of the extension strip is elliptical.

[0014] Preferably, the lower surface of the lock seat is provided with a circular groove; the lower end of the lock bar is slidably connected in the circular groove; the inner wall of the circular groove is provided with a vertical groove; a vertical block is slidably connected in the vertical groove; the vertical block is fixedly connected to the lock bar; the corner groove is in the shape of a stepped hole; the lower inner wall of the corner groove is provided with a spiral groove; a groove block is movably connected in the spiral groove; the groove block is fixedly connected to the lock bar; the circumferential span of the spiral groove is 90 degrees.

[0015] The beneficial effects of this invention are as follows: 1. This invention uses positioning bars and diagonal bars to cooperate with the inner opening of the container, so as to achieve precise alignment of the turnlock and the locking groove from the inside of the container. Compared with the existing external flipping guide positioning method, it does not require sufficient space around the container. It can be used normally in the narrow environment of the well where there is insufficient space around the container, avoiding jamming and alignment deviation, thereby improving the efficiency of docking operation and meeting the requirements of precise lifting.

[0016] 2. This invention, through the cooperation of inclined groove, movable block, inverted trapezoidal groove and inverted trapezoidal strip, combined with the function of limit block and return spring, can not only displace material when the inclined strip encounters obstruction and ensure that the inclined strip enters the container smoothly, but also improve the alignment accuracy of the turnlock and locking groove through the opening and closing adjustment of the positioning strip. At the same time, after the spreader is separated from the container, it controls the positioning strip and inclined strip on the same side to gather together, reducing the difficulty of subsequent guiding and positioning of the inclined strip.

[0017] 3. This invention uses a combination of circular grooves, vertical grooves, vertical blocks, spiral grooves, and groove blocks, along with a corner groove in the shape of a stepped hole, to ensure that the lock head is initially far from the corner of the lower beam to ensure complete entry into the lock groove. When rotating, it rises synchronously to approach the corner of the lower beam to achieve further locking. This not only avoids the problem of the lock head rotating before it is aligned, but also ensures that the top of the container is close to the lower beam, greatly improving the stability of the turnlock locking and the smoothness of the container during lifting. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the drive groove and corner groove of the present invention; Figure 3 This is a perspective view of the double-headed hydraulic cylinder, lock seat, and rotary lock of the present invention; Figure 4 This is a perspective view of the positioning seat and positioning strip in this invention; Figure 5 This is a perspective view of the reset plate and positioning strip in this invention; Figure 6 This is a cross-sectional view of the positioning seat in this invention; Figure 7This is a perspective view of the oblique strip and the extension strip in this invention; Figure 8 This is a perspective view of the extension bar and extension spring in this invention.

[0020] In the diagram: Upper beam 1, main motor 11, pulley 12, lower beam 2, corner groove 21, spiral groove 211, groove block 212, drive groove 22, lock seat 23, round groove 231, vertical groove 232, vertical block 233, rotary lock 24, lock bar 241, lock head 242, notch 243, double-headed oil cylinder 25, connecting bar 26, rotating bar 27, positioning seat 3, positioning groove 31, reset plate 32, reset spring 33, inclined groove 34, movable block 35, inverted trapezoidal bar 36, positioning bar 4, limit block 41, inverted trapezoidal groove 42, inclined bar 5, extension groove 51, extension bar 52, extension spring 53, through groove 54, through bar 55. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 8 As shown, the present invention includes the following embodiments: Example 1: A novel monorail lifting device for material containers includes an upper beam 1 and a lower beam 2 rotatably connected to the upper beam 1 via a main motor 11; the upper beam 1 is connected to a cable via pulleys 12; corner grooves 21 are provided at the four corners of the lower surface of the lower beam 2; a drive groove 22 communicating with two corner grooves 21 is provided inside the left end of the lower beam 2; a lock seat 23 is rotatably connected to the upper end of the corner groove 21; a turnlock 24 extending to the lower part of the lock seat 23 is connected to the lower end of the lock seat 23; a double-headed hydraulic cylinder 25 is fixedly connected to the inner wall of the drive groove 22; connecting strips 26 are hinged to both ends of the double-headed hydraulic cylinder 25; The end of the connecting bar 26 is hinged to the rotating bar 27 on the lock seat 23; the rotary lock 24 is composed of a lock bar 241 and an inverted conical lock head 242; the outer wall of the lock head 242 is symmetrically provided with notches 243; the cross section of the lock head 242 is rectangular and compatible with the cross section of the lock groove on the container; the lower beam 2 is fixedly connected to the positioning seat 3 in the front, back, left and right directions; the positioning seat 3 is connected to the positioning bar 4 downwards; the cross section enclosed by the outer edges of the four positioning bars 4 is compatible with the cross section inside the container; the lower end of the positioning bar 4 is inclined inwards with a diagonal bar 5; the lower end of the positioning bar 4 is lower than the lock head 242 in the vertical direction.

[0023] The mining top-opening material container is pre-loaded with the materials needed underground. It moves smoothly along a dedicated underground track with the mine car to the preset lifting position and precisely stops directly below the monorail lifting device. At this point, the underground control system issues an unlocking command to unlock the locking mechanism between the mine car and the container, completely separating them and placing them in a lifting-ready state. Subsequently, the control system controls the monorail's cable and pulley 12 to work together. The cable slowly lowers, causing the upper beam 1 of the lifting device to move vertically downwards. During the downward movement of the upper beam 1, the main motor 11 connected to its bottom moves synchronously downwards, driving the lower beam 2 below to move smoothly downwards. As the lower beam 2 moves downwards, the positioning seats fixedly connected to it in the four directions (front, back, left, and right) engage... Position 3 also moves downwards synchronously, and the positioning strip 4, which is fixedly connected to the lower end of the positioning seat 3, moves downwards synchronously. The inclined strip 5, which is set with its lower end inclined inwards, also moves downwards along with the positioning strip 4. Since the lower end of the positioning strip 4 is lower than the locking head 242 of the rotary lock 24 in the vertical direction, the inclined strip 5 will first contact the inner edge of the container opening during the entire downward movement of the spreader. The inclined surface of the inclined strip 5 forms a guide structure. With the guiding effect of the contact between the inclined strip 5 and the inner opening of the container, as the upper beam 1 and the lower beam 2 continue to move downwards slowly, the inclined strip 5 gradually slides downwards along the inner opening of the container, while playing a precise guiding and correction role for the lower beam 2, guiding the lower beam 2 to slowly adjust its position and gradually move to directly above the container. After the diagonal bar 5 is fully inserted into the container, the positioning bar 4 also simultaneously extends into the container. At this time, the rotary locks 24 installed in the corner grooves 21 at the four corners of the lower beam 2 are precisely aligned with the rectangular lock grooves corresponding to the inner positions of the top openings of the container. The lower beam 2 continues to move slowly downwards, and the inverted conical lock head 242 in the rotary lock 24 smoothly enters the lock groove of the container under the action of gravity and downward pressure. When the lock head 242 is fully inserted into the lock groove, the lower surface of the four corners of the lower beam 2 is tightly fitted with the upper surface of the four corners of the container, achieving the initial positioning of the spreader and the container. Subsequently, the control system controls the double-headed hydraulic cylinder 25 in the drive groove 22 inside the left end of the lower beam 2 to start working. The piston rods at both ends of the double-headed hydraulic cylinder 25 are in sync with the working mechanism. The extension and retraction of the double-headed cylinder 25 causes the connecting bar 26, which is hinged at both ends, to move smoothly along the extension and retraction direction of the double-headed cylinder 25. The end of the connecting bar 26 away from the double-headed cylinder 25 is hinged to the rotating bar 27 on the lock seat 23. Therefore, when the connecting bar 26 moves, it will drive the rotating bar 27 to rotate synchronously around the lock seat 23. The rotating bar 27 is fixedly connected to the lock seat 23, which in turn drives the lock seat 23 to rotate around the rotating connection point in the corner groove 21. The rotary lock 24 connected to the lower end of the lock seat 23 rotates synchronously. After the lock head 242 and the lock bar 241 of the rotary lock 24 rotate synchronously by 90°, the cross section of the lock head 242 and the groove opening cross section of the lock groove form a perpendicular state, realizing the firm locking and fixing of the rotary lock 24 and the lock groove. At this time, the spreader and the container are completely locked into a whole.Next, the control system retracts the cable, causing pulley 12 to move upward. Pulley 12 then moves the upper beam 1, lower beam 2, and the container locked to it vertically upward simultaneously. After smoothly leaving the ground, the monorail crane moves the entire lifting device and container along the monorail track, transferring the material to the target working position underground. When the container is transported to the preset lowering position, the control system slowly lowers the cable, causing pulley 12, upper beam 1, lower beam 2, and the container to move vertically downward simultaneously. Once the container lands smoothly on the corresponding lowering platform, and the bottom of the container is tightly fitted to the platform and remains stable, the control system controls the double-headed hydraulic cylinder 25 to extend and retract in the opposite direction, driving the connection at both ends... When bar 26 moves in the reverse direction, connecting bar 26 drives rotating bar 27 to rotate in the reverse direction. Rotating bar 27 drives lock seat 23 to rotate in the reverse direction by 90°. Rotary lock 24 then rotates in the reverse direction by 90°, so that the cross-section of lock head 242 is realigned with the groove cross-section of lock groove, thereby unlocking rotary lock 24 from container lock groove. Finally, the control system controls the cable to continue to retract, driving upper beam 1 and lower beam 2 to move upward. Lower beam 2 drives four positioning seats 3, positioning bars 4 and diagonal bars 5 to move upward synchronously, gradually moving out from inside the container until diagonal bars 5 are completely detached from the container opening. The spreader returns to the initial lifting position, completing the entire lifting, transfer, lowering and unlocking operation process. This invention uses positioning strips 4 and diagonal strips 5 to cooperate with the inner opening of the container, so as to achieve precise alignment of the rotary lock 24 with the lock groove from the inside of the container. Compared with the existing external flipping guide positioning method, it does not require sufficient space for movement around the container. It can be used normally in the narrow underground environment where there is insufficient space around the container, avoiding jamming and alignment deviation, thereby improving docking operation efficiency and meeting the requirements of precise lifting.

[0024] Example 2: The lower surface of the positioning seat 3 is provided with a positioning groove 31; a reset plate 32 is slidably connected to the positioning groove 31; the upper surface of the reset plate 32 is connected to the bottom of the positioning groove 31 by a reset spring 33; the upper end of the positioning strip 4 is connected to the reset plate 32.

[0025] When the lower beam 2 in the spreader moves downward, its four positioning seats 3 move downward simultaneously. The positioning seats 3 drive the positioning strips 4 and the diagonal strips 5 to move downward together. At this time, the return spring 33 in the positioning groove 31 on the lower surface of the positioning seat 3 is in a naturally extended state with a large elastic force and will not be compressed. The return plate 32 is located at the lower end of the positioning groove 31 under the support of the return spring 33, driving the positioning strip 4 to maintain its maximum extended state (only partially extended into the positioning groove 31, not fully retracted), ensuring that the diagonal strip 5 can contact the inner opening of the container first. When the diagonal strip 5 and the positioning strip 4 are normally attached to the inner edge of the container without any obstruction, the positioning strip 4 can move downward smoothly, driving the diagonal strip 5 to gradually enter the inner side of the container, guiding the rotary lock 24 to accurately align with the lock groove. Throughout the process, the return spring 33 always remains in a natural state, and the return plate 32 does not move. After the diagonal strip 5 and the positioning strip 4 enter the inner side of the container under the guidance of the lower beam 2, the diagonal strip 5 and the positioning strip 4 will continue to move downward as the lower beam 2 continues to move downward. If the diagonal strip 5 and the positioning strip 4 encounter any obstacles during the downward movement... If obstruction occurs (such as excessive material accumulation inside the container), preventing further downward movement, the lower beam 2 continues to move downward under the control system. At this time, the positioning strip 4 will be subjected to an upward obstruction force, which in turn drives the upper-connected reset plate 32 to move upward. The reset plate 32 presses upward against the reset spring 33 between the bottom of the positioning groove 31 and the reset plate 32, causing the reset spring 33 to gradually compress and complete the storage of force. This prevents the positioning strip 4 from being unable to move due to obstruction and thus hindering the lower beam 2 from continuing to move downward, ensuring that the lower beam 2 can move downward normally to the designated position, allowing the lock head 242 of the rotary lock 24 to smoothly enter the lock groove of the container. During the process of the rotary lock 24 unlocking from the lock groove and controlling the lower beam 2 to move upward, the lower beam 2 drives the positioning seat 3 to move upward synchronously. The positioning strip 4 and the diagonal strip 5 gradually detach from the inside of the container. At this time, the obstruction force on the positioning strip 4 disappears, the compressed reset spring 33 releases its stored force, and pushes the reset plate 32 to move downward in the positioning groove 31. The reset plate 32 drives the positioning strip 4 to reset downward synchronously, returning to the initial maximum extended state.

[0026] Example 3: The inner wall of the positioning groove 31 is symmetrically provided with inclined grooves 34; the inclined grooves 34 are movably connected to the movable blocks 35; the upper ends of the two positioning strips 4 extend into the inclined grooves 34 and are fixedly connected to the corresponding movable blocks 35; the inclined grooves 34 connected to the two positioning strips 4 are distributed in an inverted V-shape.

[0027] In this embodiment, the outer wall of the positioning strip 4, which is away from the center of the lower beam 2, is fixedly connected to the limiting block 41; the limiting block 41 is provided with a distance from both the upper end and the lower end of the positioning strip 4.

[0028] In this embodiment, the positioning strip 4 has an inverted trapezoidal groove 42 horizontally arranged at its upper end; the inverted trapezoidal groove 42 is slidably connected to the inverted trapezoidal strip 36 fixed to the lower surface of the reset plate 32.

[0029] During the downward movement of the lower beam 2 of the lifting device, it will drive the four positioning seats 3 in the front, back, left and right to move down synchronously. When the positioning seats 3 move down, they will drive the positioning strip 4 and the inclined strip 5 with the lower end of the positioning strip 4 to move down together. The return spring 33 in the positioning groove 31 on the lower surface of the positioning seat 3 is initially in a naturally extended state with a large elastic force. The return plate 32 is located at the lower end of the positioning groove 31 under the support of the return spring 33, which drives the positioning strip 4 to maintain the maximum extended state (only partially extended into the positioning groove 31, not fully retracted). At the same time, the upper end of the positioning strip 4 is slidably connected to the inverted trapezoidal strip 36 on the lower surface of the return plate 32 through the inverted trapezoidal groove 42. The upper end of the positioning strip 4 also extends into the inclined groove 34 symmetrically arranged on the inner wall of the positioning groove 31, and is fixed with the movable block 35 in the inclined groove 34. The two positioning bars 4 are fixedly connected, and the inclined grooves 34 connected by the two positioning bars 4 are distributed in an inverted V-shape. The limiting block 41 is fixed on the outer wall of the positioning bar 4 away from the center of the lower beam 2, and there is a distance between the limiting block 41 and the upper and lower ends of the positioning bar 4. When the inclined bar 5 moves towards the inside of the container under the guidance and is about to enter the container opening, if the inclined bar 5 encounters an obstruction (such as material accumulation inside the container), it cannot continue to move downward and inward. At this time, as the lower beam 2 continues to move downward, the positioning bar 4 is subjected to an upward and inward blocking force. Since the positioning bar 4 is fixedly connected to the movable block 35, the inclined grooves 34 are distributed in an inverted V-shape, and the positioning bar 4 is slidably connected to the reset plate 32 through the inverted trapezoidal groove 42, the blocking force will trigger the movable block 35 to slide along the inclined groove 34, driving the two fixed bars on the same side to slide along the inclined groove 34. As the positioning bars 4 move away from each other, they disturb the surrounding material, clearing away the material around the inclined bars 5. Once the material is cleared, the inclined bars 5 can smoothly enter the container, thus cooperating with the positioning bars 4 to complete the initial positioning of the four corner locks 24 of the lower beam 2. If there is little material inside the container and no obvious obstruction, the inclined bars 5 will directly and smoothly enter the container. As the lower beam 2 continues to move downward, the positioning bars 4 also gradually penetrate deeper into the container. When the limiting block 41 on the positioning bar 4 rests on the edge of the container opening, the limiting block 41 acts as a limit, preventing the positioning bars 4 from continuing to penetrate deeper into the container. At this time, the lower beam 2 continues to move downward, and the positioning bars 4 are subjected to the upward resistance transmitted by the limiting block 41, causing the movable block 35 to move along... As the inverted V-shaped groove 34 continues to slide, it further drives the two positioning strips 4 on the same side to move away from each other. When the positioning strips 4 move away from each other, they will squeeze the reset plate 32, causing the reset plate 32 to move upward and squeeze the reset spring 33, allowing the reset spring 33 to complete the storage of force. At the same time, the positioning strips 4 will gradually retract into the positioning groove 31 as the movable block 35 slides and the reset plate 32 moves upward, to prevent the positioning strips 4 from being too long and obstructing the rotary lock 24 from entering the corresponding lock groove. After the positioning strips 4 move away from each other, the distance between the two positioning strips 4 on the same side increases, further improving the positioning accuracy of the lower beam 2, so that the rotary locks 24 at the four corners of the lower beam 2 are more accurately aligned with the lock grooves at the four corners of the container, ensuring that the lock head 242 of the rotary lock 24 can smoothly enter the lock groove to complete the locking.After the container is lifted and transferred to the target position and the rotary lock 24 is unlocked from the lock groove, the lower beam 2 is moved upward. The lower beam 2 drives the positioning seat 3, positioning strip 4 and inclined strip 5 to move upward synchronously. When the lower end of the inclined strip 5 and positioning strip 4 is completely moved out of the container, the blocking force and limiting force on the positioning strip 4 disappear. The compressed return spring 33 releases its stored force and pushes the return plate 32 to move downward in the positioning groove 31. The return plate 32 pushes the positioning strip 4 to move outward through the sliding cooperation between the inverted trapezoidal strip 36 and the inverted trapezoidal groove 42. This causes the movable block 35 to slide along the inclined groove 34 to the initial position. The two positioning strips 4 on the same side also move closer to each other and reset. The inclined strips 5 connected to the positioning strip 4 move closer together synchronously, reducing the difficulty of the two inclined strips 5 on the same side entering the container in subsequent operations. This invention utilizes the cooperation of inclined groove 34, movable block 35, inverted trapezoidal groove 42 and inverted trapezoidal strip 36, combined with the functions of limiting block 41 and return spring 33, to not only displace material when the inclined strip 5 encounters obstruction and ensure that the inclined strip 5 smoothly enters the container, but also to improve the alignment accuracy of the turnlock 24 and the locking groove through the opening and closing adjustment of the positioning strip 4. At the same time, after the spreader is detached from the container, it controls the positioning strip 4 and the inclined strip 5 on the same side to gather together, reducing the difficulty of guiding and positioning the inclined strip 5 in the future.

[0030] Example 4: The inclined groove 34 is corrugated and inclined; the movable block 35 is circular; the movable block 35 oscillates up and down as it moves along the inclined groove 34.

[0031] As the lower beam 2 of the spreader moves downward, it causes the positioning seat 3, positioning strip 4, and inclined strip 5 to move downward simultaneously. When the inclined strip 5 moves towards the inside of the container to prepare to enter the opening, the circular movable block 35, which is fixed to the upper end of the positioning strip 4, slides along the corrugated inclined groove 34 on the inner wall of the positioning groove 31. Because the inclined groove 34 is corrugated and inclined, the movable block 35 will fluctuate up and down during the sliding process, which in turn causes the positioning strip 4 to fluctuate up and down synchronously. When the inclined strip 5 encounters the obstruction of the material piled up inside the container and cannot continue to move, the movable block 35 fluctuates along the corrugated inclined groove 34, causing the positioning strip 4 and inclined strip 5 to fluctuate up and down. On the one hand, the inclined strips 5 at the ends of the two positioning strips 4 on the same side move away from each other and push the material away. On the other hand, the up and down fluctuation of the inclined strip 5 can more fully disperse the material piled up around it. First, ensure that the diagonal bar 5 smoothly enters the inside of the container to cooperate in positioning the rotary lock 24 and the lock groove. After the container is lifted and transferred to the target position and the rotary lock 24 and the lock groove are unlocked, control the lower beam 2 to move upward. The lower beam 2 drives the positioning seat 3, positioning bar 4 and diagonal bar 5 to move away from the container simultaneously. At this time, the movable block 35 slides in the opposite direction along the corrugated inclined groove 34. During the sliding process, it still maintains up and down fluctuation, while driving the two positioning bars 4 on the same side to move closer to each other. The positioning bar 4 generates slight vibration under the action of up and down fluctuation, which shakes off the material debris attached between the two positioning bars 4 and the two diagonal bars 5 on the same side, avoiding the debris residue from hindering the two diagonal bars 5 on the same side from moving closer to each other. This ensures that the positioning bar 4 and diagonal bar 5 are smoothly reset to the initial state, preparing for subsequent operations.

[0032] Example 5: An extension groove 51 is provided at the end of the inclined strip 5 along the inclined direction; an extension strip 52 is slidably connected in the extension groove 51; the bottom of the extension groove 51 and the extension strip 52 are connected by an extension spring 53.

[0033] In this embodiment, the inclined strip 5 passes through the through groove 54 through the lower inner wall of the extension groove 51; a corresponding through strip 55 is movably connected in the through groove 54; the through strip 55 is fixedly connected to the extension strip 52; the cross section of the extension strip 52 is elliptical.

[0034] When the lower beam 2 of the spreader moves downward, causing the positioning seat 3, positioning strip 4, and inclined strip 5 to move downward simultaneously, the extension strip 52 in the extension groove 51 at the end of the inclined strip 5 is in its maximum extended state under the support of the extension spring 53, increasing the guiding range of the inclined strip 5. The through strip 55 in the through groove 54 on the lower inner wall of the extension groove 51 is fixedly connected to the extension strip 52. The through strip 55 is flush with the inclined surface of the inclined strip 5, which facilitates a better transition between the inclined surface of the extension strip 52 and the inclined strip 5. The extension strip 52 has an elliptical cross-section and thinner edges. When the inclined strip 5 moves towards the inside of the container to prepare to enter the opening, the elliptical cross-section of the extension strip 52, with its thinner edges, allows it to move towards the inside of the container to enter the opening. Its edge characteristics can better push aside the surrounding accumulated materials, reduce movement obstruction, and further improve the guiding effect of the inclined strip 5; the extension strip 52 will also retract into the extension groove 51 when it encounters greater resistance; during the process of the inclined strip 5 driving the extension strip 52 into the inner side of the container and cooperating with the positioning strip 4 to complete the positioning of the turnlock 24 and the lock groove, the through strip 55 is always flush with the inclined surface of the inclined strip 5 to ensure the smoothness of the guiding positioning and avoid the through strip 55 protruding or sinking and affecting the guiding effect; the elliptical cross section of the extension strip 52 will also reduce the resistance of the extension strip 52 to the material movement as the inclined strips 5 on the same side move away from each other.

[0035] Example 6: A circular groove 231 is provided on the lower surface of the lock base 23; the lower end of the lock bar 241 is slidably connected in the circular groove 231; a vertical groove 232 is provided on the inner wall of the circular groove 231; a vertical block 233 is slidably connected in the vertical groove 232; the vertical block 233 is fixedly connected to the lock bar 241; the corner groove 21 is in the shape of a stepped hole; a spiral groove 211 is provided on the lower inner wall of the corner groove 21; a groove block 212 is movably connected in the spiral groove 211; the groove block 212 is fixedly connected to the lock bar 241; the circumferential span of the spiral groove 211 is 90 degrees.

[0036] During the downward movement of the lower beam 2 of the spreader, the diagonal strip 5 and the positioning strip 4 cooperate to complete the guiding and positioning, so that the lock heads 242 of the rotary locks 24 in the four corner grooves 21 of the lower beam 2 are precisely aligned with the lock grooves inside the top opening of the container. Then the lower beam 2 continues to move downward, and the inverted conical lock heads 242 in the rotary locks 24 smoothly enter the lock grooves of the container. At this time, the lock bar 241 in the circular groove 231 on the lower surface of the lock seat 23 is in the initial position, and the lock heads 242 are away from the corners of the lower beam 2, ensuring that the lock heads 242 can be fully inserted into the lock grooves and avoiding the situation where the lock heads 242 rotate before they are fully inserted into the lock grooves. After the lock heads 242 are fully inserted into the lock grooves and the lower surfaces of the four corners of the lower beam 2 are aligned with the lock grooves inside the container, the lower beam 2 continues to move downward. After the four corner surfaces of the container are tightly fitted together, the control system starts the double-headed hydraulic cylinder 25 in the drive groove 22 at the left end of the lower beam 2. The double-headed hydraulic cylinder 25 extends and retracts, causing the connecting bar 26 and the rotating bar 27 to move, which in turn causes the lock seat 23 to rotate around the rotating connection point in the corner groove 21. When the lock seat 23 rotates, it synchronously drives the circular groove 231 on its lower surface to rotate. The rotation of the circular groove 231 drives the vertical groove 232 set in its inner wall to rotate synchronously. The vertical block 233, which is slidably connected to the vertical groove 232, is fixed to the locking bar 241. Therefore, the rotation of the vertical groove 232 will drive the vertical block 233 to rotate synchronously. The vertical block 233 will then drive the locking bar 241 to rotate. When the locking bar 241 rotates, it not only drives the vertical block 233 to rotate synchronously, but also drives the locking bar 241 to rotate. This will cause the lower-end connected lock head 242 to rotate synchronously, and will also cause the groove block 212 fixed to its outer wall to move along the spiral groove 211 on the lower inner wall of the corner groove 21. Since the spiral groove 211 is spirally rising and has a circumferential span of 90 degrees, the groove block 212 will rotate upward synchronously as it slides along the spiral groove 211, thereby causing the locking bar 241 to rotate upward synchronously. The upward movement of the locking bar 241 causes the lock head 242 to rotate and rise synchronously, so that the lock head 242 is misaligned with the lower opening of the lock groove and gradually approaches the corner of the lower beam 2, realizing further limiting and locking of the rotary lock 24 and the corner of the top of the container, so that the top of the container is tightly against the four corners of the lower beam 2, thereby improving the lifting effect. The stability of the container when it is lifted; when the container is transferred to the target position and needs to be unlocked, the control system controls the double-headed hydraulic cylinder 25 to extend and retract in the opposite direction, which drives the lock seat 23 to rotate 90 degrees in the opposite direction. The lock seat 23 drives the circular groove 231 and the vertical groove 232 to rotate in the opposite direction. The vertical block 233 drives the locking bar 241 to rotate in the opposite direction. The locking bar 241 drives the groove block 212 to slide in the opposite direction along the spiral groove 211. The groove block 212 rotates downward synchronously and descends, which drives the locking bar 241 and the lock head 242 to descend and reset synchronously. The lock head 242 moves away from the corner of the lower beam 2 again. As the lock head 242 rotates 90 degrees in the opposite direction and aligns with the lock groove, the spiral lock 24 is unlocked from the lock groove, and the spreader can be moved upward. This invention utilizes a combination of a circular groove 231, a vertical groove 232, a vertical block 233, a spiral groove 211, and a groove block 212, along with a corner groove 21 in the shape of a stepped hole. This ensures that the lock head 242 is initially far from the corner of the lower beam 2 to guarantee complete entry into the lock groove. During rotation, it rises synchronously to approach the corner of the lower beam 2 for further locking. This not only avoids the problem of the lock head 242 rotating before it is properly aligned, but also ensures that the top of the container is close to the lower beam 2, significantly improving the stability of the spiral lock 24 and the smoothness of the container during lifting.

[0037] Example 7: The positioning seat 3 is connected to the lower beam 2 by bolts (not shown in the figure, the lower beam 2 has multiple mounting holes), and the installation direction is selected according to the type of container; in this way, the positioning seat 3 can be installed with the diagonal strip 5 tilted outwards in some sealed containers to achieve external positioning, while the positioning seat 3 can be installed with the diagonal strip 5 tilted inwards in some open containers to achieve internal positioning, thus enhancing applicability.

[0038] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first," "second," "third," etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, "fixed connection" refers to a fixed connection. In the description of the present invention, "sliding connection" refers to a connection where the two parts can only slide and cannot be separated. Specifically, the groove can be set to be concave and the block can be set to be convex, and the specific design can be adjusted according to the actual situation. "Sliding fit" refers to a connection where the two parts can slide and separate. In the description of the present invention, "rotational connection" refers to a connection where the two parts can only rotate and cannot produce axial displacement. Specifically, an annular groove can be provided on the inner wall of the hole, and a ring that is rotatably connected to the groove can be fixed to the outer wall of the shaft.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel monorail lifting device for material containers, comprising an upper beam and a lower beam rotatably connected below the upper beam via a main motor; the upper beam is connected to a cable via pulleys; characterized in that: The lower beam has corner grooves at its four corner positions on its lower surface; a drive groove communicating with two corner grooves is provided inside the left end of the lower beam; a lock seat is rotatably connected to the upper end of the corner groove; a rotary lock extending below the corner groove is connected to the lower end of the lock seat; a double-headed hydraulic cylinder is fixedly connected to the inner wall of the drive groove; connecting strips are hinged to both ends of the double-headed hydraulic cylinder; a rotating bar on the lock seat is hinged to the end of the connecting strip; the rotary lock is composed of a lock bar and an inverted conical lock head; notches are symmetrically provided on the outer wall of the lock head; the cross-section of the lock head is rectangular and compatible with the cross-section of the lock groove on the container; positioning seats are fixedly connected to the lower beam in all directions; positioning strips are connected downwards to the positioning seats; the cross-section enclosed by the outer edges of the four positioning strips is compatible with the inner cross-section of the container; a diagonal strip is provided at the lower end of the positioning strip, which is inclined inwards; the lower end of the positioning strip is lower than the lock head in the vertical direction.

2. The novel monorail lifting device for material containers according to claim 1, characterized in that: The lower surface of the positioning seat is provided with a positioning groove; a reset plate is slidably connected in the positioning groove; the upper surface of the reset plate is connected to the bottom of the positioning groove by a reset spring; the upper end of the positioning strip is connected to the reset plate.

3. The novel monorail lifting device for material containers according to claim 2, characterized in that: The inner wall of the positioning groove is symmetrically provided with inclined grooves; a movable block is movably connected in the inclined groove; the upper end of the two positioning strips extends into the inclined groove and is fixedly connected to the corresponding movable block; the inclined grooves connected to the two positioning strips are distributed in an inverted V-shape.

4. A novel monorail lifting device for material containers according to claim 3, characterized in that: The positioning strip is fixed to the outer wall of the lower beam away from the center of the positioning strip. The positioning strip is provided with a distance from the upper end and the lower end of the positioning strip.

5. A novel monorail lifting device for material containers according to claim 3, characterized in that: The positioning strip has an inverted trapezoidal groove at its upper end; the inverted trapezoidal groove is slidably connected to the inverted trapezoidal strip fixed to the lower surface of the reset plate.

6. A novel monorail lifting device for material containers according to claim 5, characterized in that: The inclined groove is corrugated and inclined; the movable block is circular; the movable block oscillates up and down as it moves along the inclined groove.

7. A novel monorail lifting device for material containers according to claim 1, characterized in that: The end of the inclined bar is provided with an extension groove along the inclined direction; the extension bar is slidably connected in the extension groove; the bottom of the extension groove and the extension bar are connected by an extension spring.

8. A novel monorail lifting device for material containers according to claim 7, characterized in that: The lower inner wall of the extension groove is traversed by a through groove through which the inclined bar passes; a corresponding through bar is movably connected within the through groove; the through bar is fixedly connected to the extension bar; the cross-section of the extension bar is elliptical.

9. A novel monorail lifting device for material containers according to claim 1, characterized in that: The lower surface of the lock base is provided with a circular groove; the lower end of the lock bar is slidably connected to the circular groove; the inner wall of the circular groove is provided with a vertical groove; a vertical block is slidably connected to the vertical groove; the vertical block is fixedly connected to the lock bar; the corner groove is in the shape of a stepped hole; the lower inner wall of the corner groove is provided with a spiral groove; a groove block is movably connected to the spiral groove; the groove block is fixedly connected to the lock bar; the circumferential span of the spiral groove is 90 degrees.

10. A novel monorail lifting device for material containers according to claim 1, characterized in that: The positioning seat is bolted to the lower beam, and the installation direction is selected according to the type of container.

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