A type of charcoal block lifting device

Abstract

This utility model discloses a charcoal block lifting device, including a lifting device frame. The lifting device frame includes a main lifting frame, a first connecting rod, a second connecting rod, a first hook, a second hook, and an auxiliary lifting frame. Both the main lifting frame and the auxiliary lifting frame are horizontally arranged. The top ends of the first and second connecting rods are respectively connected to one end pin of the main lifting frame along its length. The bottom ends of the first and second connecting rods are respectively connected to one end pin of the first and second hooks. The middle parts of the first and second hooks are respectively connected to the two ends pins of the auxiliary lifting frame along its length. The end of the first hook away from the first connecting rod and the end of the second hook away from the second connecting rod are open and close, and the charcoal block is lifted by the opening and closing action. An opening and closing control mechanism is provided between the main lifting frame and the auxiliary lifting frame, and the opening and closing action state of the first and second hooks is controlled by the opening and closing control mechanism.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic aluminum, and in particular to a carbon block lifting device. Background Technology

[0002] In the electrolytic aluminum industry, when installing cathode carbon blocks in electrolytic cells, hoisting slings are commonly used for binding and lifting operations. Due to the excessive weight of the cathode carbon blocks, their overall rectangular shape, and relatively smooth surface make them difficult for operators to handle during overhead crane transport. Furthermore, the hoisting slings are prone to slipping and falling, leading to unsafe situations. In addition, the manual operation of binding the carbon blocks with hoisting slings increases the labor costs of hoisting operations.

[0003] Patent No. ZL202120384735.4 discloses a device for lifting cathode carbon blocks. It achieves automated lifting of cathode carbon blocks by setting a bidirectional electric telescopic rod on the lifting device to control the opening and closing of the lifting device, thus saving labor costs. However, the bidirectional electric telescopic rod requires the assistance of a motor and power supply line, which increases the production cost of the lifting device. Furthermore, during the lifting of carbon blocks, the power supply line may cause entanglement and interference with the lifting device, which seriously affects the normal lifting operation of the lifting device. It is necessary to improve it. Summary of the Invention

[0004] The purpose of this utility model is to address the above-mentioned problems by providing a carbon block lifting device that is simple in structure and easy to use.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A charcoal block lifting device includes a lifting frame, which comprises a main lifting frame, a first connecting rod, a second connecting rod, a first hook, a second hook, and an auxiliary lifting frame. Both the main and auxiliary lifting frames are horizontally arranged, with the auxiliary lifting frame positioned below the main lifting frame. The first and second connecting rods are symmetrically arranged at both ends of the main lifting frame along its length. The top ends of the first and second connecting rods are respectively connected to pins at one end of the main lifting frame along its length, and the bottom ends of the first and second connecting rods are respectively connected to pins at one end of the first and second hooks. The first and second hooks are symmetrically arranged at both ends of the auxiliary hanger along its length. The middle parts of the first and second hooks are respectively connected to the pins at both ends of the auxiliary hanger along its length. The end of the first hook away from the first connecting rod and the end of the second hook away from the second connecting rod open and close, and the carbon block is lifted by the opening and closing action. An opening and closing control mechanism is provided between the main hanger and the auxiliary hanger, and the opening and closing action status of the first and second hooks is controlled by the opening and closing control mechanism.

[0006] Furthermore, the main hanger is composed of two main hanger plates and a positioning frame. The two main hanger plates are symmetrically arranged front and back, and the positioning frame is fixedly connected between the two main hanger plates and is located at the center of the main hanger plates. The top ends of the first connecting rod and the second connecting rod are respectively arranged between the ends of the two main hanger plates in the length direction and connected to the pin shaft of the main hanger plates.

[0007] Furthermore, the top of the positioning frame is provided with a lifting ring and is connected to the lifting equipment through the lifting ring, and the bottom of the positioning frame is connected to the opening and closing control mechanism.

[0008] Furthermore, the positioning frame is provided with a guide hole, and a guide rod corresponding to the guide hole is fixedly connected to the auxiliary hanger. The length direction of the guide rod is perpendicular to the length direction of the auxiliary hanger. The bottom end of the guide rod is fixedly connected to the auxiliary hanger, and the top end of the guide rod passes through the guide hole and can slide relative to the inner wall of the guide hole.

[0009] Furthermore, the first and second hooks are provided with an open structure at the end where they are connected to the first and second connecting rod pins. The first and second hooks are nested on the front and rear sides of the bottom end of the first and second connecting rods through the open structure and connected to the first and second connecting rod pins through the inner wall of the open structure. The end of the first and second hooks away from the first and second connecting rods is provided with three forked structures. The three forked structures are arranged side by side and all three forked structures are bent downwards.

[0010] Furthermore, the auxiliary hanger is composed of two auxiliary hanger plates and a limiting frame. The two auxiliary hanger plates are symmetrically arranged front and back, and the limiting frame is fixedly connected between the two auxiliary hanger plates and is located at the center of the auxiliary hanger plates. The middle parts of the first hook and the second hook are respectively arranged between the ends of the two auxiliary hanger plates in the length direction and connected to the pin shaft of the auxiliary hanger plates.

[0011] Furthermore, the opening and closing control mechanism includes a fixed sleeve, a lifting component, and a latching component. The top end of the fixed sleeve is fixedly connected to the bottom end of the positioning frame. The fixed sleeve is a cylindrical shell with openings at both the top and bottom. The lifting component is fitted inside the fixed sleeve and can rotate around the axis of the fixed sleeve. A connecting rod is fixedly connected to the bottom end of the lifting component, and the bottom end of the connecting rod extends from the bottom end of the fixed sleeve and is fixedly connected to the latching component. The latching component is a rectangular prism. The limiting frame is provided with a locking groove, and the top end of the locking groove is provided with a clearance hole communicating with the outside. The clearance hole is correspondingly provided with the latching component, and the outer diameter of the clearance hole is adapted to the outer diameter of the cross-section of the latching component. When the position angle of the latching component corresponds to the clearance hole, the latching component extends from the clearance hole into the locking groove, and the position angle of the latching component is misaligned with the clearance hole by the rotation of the latching component again, so as to realize the locking connection between the latching component and the limiting frame.

[0012] Furthermore, the bottom center of the buckle is convex and the buckle can rotate within the buckling groove.

[0013] Furthermore, the lifting component is cylindrical and is fitted inside the fixed sleeve, allowing it to slide longitudinally relative to the inner wall of the fixed sleeve. A rotary groove is provided on the circumferential side wall of the lifting component. Pin holes are symmetrically arranged on the outer side wall of the fixed sleeve, with the axis of the pin holes aligned with the radial direction of the fixed sleeve. A rotary pin is installed inside the pin holes, and the outer end of the rotary pin is rotatably connected to an end cap fixedly connected to the outer side wall of the fixed sleeve. The inner end of the rotary pin extends into the rotary groove and can move along the rotary groove. The rotary pin can rotate around the axis of the pin hole.

[0014] Furthermore, the rotary groove is arranged around the circumference of the lifting component, and four upwardly inclined upper curved guide surfaces are evenly arranged at the top of the rotary groove along the circumference of the lifting component. The top of each upper curved guide surface is set as an arc vertex, and the arc vertex and the bottom of the adjacent upper curved guide surface are set as a first vertical guide surface. The bottom of the rotary groove is evenly arranged with four downwardly inclined lower curved guide surfaces along the circumference of the lifting component. The bottom of each lower curved guide surface is set as a limiting bottom point, and the limiting bottom point and the top of the adjacent lower curved guide surface are set as a second vertical guide surface. The limiting bottom point and the arc vertex are staggered, with the limiting bottom point located below the upper curved guide surface and the arc vertex located above the lower curved guide surface.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are: This invention employs a method where, before hoisting operations, the hoisting equipment lowers the main lifting frame and approaches the auxiliary lifting frame, engaging the opening and closing control mechanism between the main and auxiliary lifting frames. At this time, the first and second hooks are in an open state. Next, the hoisting equipment raises the entire lifting device and places it on top of the charcoal block to be hoisted, positioning the open first and second hooks at opposite ends of the charcoal block. Then, the opening and closing control mechanism between the main and auxiliary lifting frames is released, and the hoisting equipment moves the main lifting frame away from the auxiliary lifting frame. The forked structures of the first and second hooks, under leverage, approach each other and clamp the end walls of the charcoal block. As the hoisting equipment... As the lifting mechanism rises, the lifting device and the charcoal blocks are hoisted together to the usage area. Finally, the lifting equipment lowers the main frame and approaches the auxiliary frame, causing the first and second hooks to open again, thus securing the charcoal blocks stably in the usage area. The lifting equipment can then proceed with the lifting of the next charcoal block. The entire lifting process is simple and quick, requiring no manual labor or electric telescopic boom assistance to automate the charcoal block lifting operation. This avoids situations where power lines become entangled or interfere with the lifting device during lifting, reducing the production cost of the lifting device without affecting its normal lifting operation, thereby effectively improving the performance of the charcoal block lifting device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view structural diagram of the hoisting state of this utility model; Figure 2 This is a left-side structural view of the hoisting state of this utility model; Figure 3 This is a front view structural diagram of the open state of this utility model; Figure 4 A schematic diagram showing the open state of the opening and closing control mechanism; Figure 5 This is a schematic diagram illustrating the connection process between the opening / closing control mechanism and the limit frame; Figure 6 A schematic diagram showing the engaged state of the opening and closing control mechanism; Figure 7 This is an assembly structure diagram of the opening and closing control mechanism. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art to all other embodiments obtained without creative effort should be included within the protection scope of the present utility model.

[0019] like Figures 1 to 7 As shown, this embodiment discloses a charcoal block lifting device, including a lifting device frame. The lifting device frame includes a main lifting frame 1, a first connecting rod 3, a second connecting rod 4, a first hook 5, a second hook 6, and a secondary lifting frame 2. Both the main lifting frame 1 and the secondary lifting frame 2 are horizontally arranged, with the secondary lifting frame 2 positioned below the main lifting frame 1. The first connecting rod 3 and the second connecting rod 4 are symmetrically arranged at both ends of the main lifting frame 1 along its length. The top ends of the first connecting rod 3 and the second connecting rod 4 are respectively connected to one end of the main lifting frame 1 along its length via pins, and the bottom ends of the first connecting rod 3 and the second connecting rod 4 are respectively connected to the first hook 5 and the second hook 6. One end of the 6 is connected by a pin. The first hook 5 and the second hook 6 are symmetrically arranged at both ends of the auxiliary hanger 2 along its length. The middle parts of the first hook 5 and the second hook 6 are respectively connected to the pins at both ends of the auxiliary hanger 2 along its length. The end of the first hook 5 away from the first connecting rod 3 and the end of the second hook 6 away from the second connecting rod 4 are opened and closed, and the carbon block is lifted by the opening and closing action. An opening and closing control mechanism 7 is provided between the main hanger 1 and the auxiliary hanger 2, and the opening and closing action of the first hook 5 and the second hook 6 is controlled by the opening and closing control mechanism 7.

[0020] The main hanger 1 is composed of two main hanger plates 11 and a positioning frame 12. The two main hanger plates 11 are symmetrically arranged front and back. The positioning frame 12 is fixedly connected between the two main hanger plates 11 and is located at the center of the main hanger plates 11. The top of the positioning frame 12 is provided with a lifting ring 13 and is connected to the hoisting equipment through the lifting ring 13. The bottom of the positioning frame 12 is connected to the opening and closing control mechanism 7. The tops of the first connecting rod 3 and the second connecting rod 4 are respectively located between the ends of the two main hanger plates 1 in the length direction and are connected to the main hanger plates 1 by pins.

[0021] The positioning frame 12 is provided with a guide hole, and the auxiliary hanger 2 is fixedly connected with a guide rod 8 corresponding to the guide hole. The length direction of the guide rod 8 is perpendicular to the length direction of the auxiliary hanger 2. The bottom end of the guide rod 8 is fixedly connected to the auxiliary hanger 2, and the top end of the guide rod 8 passes through the guide hole and can slide relative to the inner wall of the guide hole.

[0022] The design of the guide rod and guide hole ensures that the main hanger and the auxiliary hanger remain horizontally parallel. When the distance between the main hanger and the auxiliary hanger moves, it ensures that the opening and closing angles of the first hook and the second hook remain consistent, thereby ensuring the uniformity of the clamping effect of the lifting device on the carbon block and further improving the lifting effect of the lifting device.

[0023] The first hook 5 and the second hook 6 are provided with an open structure at the end connected to the first connecting rod 3 and the second connecting rod 4 pin. The first hook 5 and the second hook 6 are respectively nested on the front and rear sides of the bottom end of the first connecting rod 3 and the second connecting rod 4 through the open structure and connected to the first connecting rod 3 and the second connecting rod 4 pin through the inner wall of the open structure. The end of the first hook 5 and the second hook 6 away from the first connecting rod 3 and the second connecting rod 4 is provided with three forked structures 501. The three forked structures 501 are arranged side by side and all three forked structures 501 are bent downward.

[0024] By designing three forked structures at the ends of the first and second hooks furthest from the first and second connecting rods, the contact area between the hooks and the end face of the charcoal block is increased, thus increasing the contact friction and ensuring the clamping stability of the lifting device during charcoal block lifting operations. Furthermore, a rubber layer can be added to the inner wall of the forked structures to further increase the friction between them and the end face of the charcoal block, thereby further improving the clamping stability of the lifting device.

[0025] The auxiliary hanger 2 is composed of two auxiliary hanger plates 21 and a limiting frame 22. The two auxiliary hanger plates 21 are symmetrically arranged front and back, and the limiting frame 22 is fixedly connected between the two auxiliary hanger plates 21 and is located at the center of the auxiliary hanger plates 21. The middle parts of the first hook 5 and the second hook 6 are respectively arranged between the ends of the two auxiliary hanger plates 21 in the length direction and are connected to the auxiliary hanger plates 21 by pins.

[0026] The opening and closing control mechanism includes a fixed sleeve 71, a lifting component 72, and a latching component 74. The top end of the fixed sleeve 71 is fixedly connected to the bottom end of the positioning frame 12. The fixed sleeve 71 is a cylindrical shell with openings at both the top and bottom. The lifting component 72 is fitted inside the fixed sleeve 71 and can rotate around the axis of the fixed sleeve 71. A connecting rod 73 is fixedly connected to the bottom end of the lifting component 72. The bottom end of the connecting rod 73 extends from the bottom end of the fixed sleeve 71 and is fixedly connected to the latching component 74. The latching component 74 is a rectangular prism. The limiting frame 22 is equipped with... A locking groove 221 is provided, and a clearance hole 222 communicating with the outside is provided at the top of the locking groove 221. The clearance hole 222 is correspondingly provided with the buckle 74, and the outer diameter of the clearance hole 222 is adapted to the outer diameter of the cross-section of the buckle 74. When the position angle of the buckle 74 corresponds to the clearance hole 222, the buckle 74 extends from the clearance hole 222 into the locking groove 221. The buckle 74 is rotated again to make the position angle of the buckle 74 misalign with the clearance hole 222, so as to realize the locking connection between the buckle 74 and the limit frame 22.

[0027] The bottom center of the buckle 74 is convex, so that the bottom of the buckle 74 can rotate after it abuts against the bottom of the slot 221.

[0028] The lifting component 72 is cylindrical and is fitted inside the fixed sleeve 71, allowing it to slide longitudinally relative to the inner wall of the fixed sleeve 71. A rotary groove 721 is provided on the circumferential side wall of the lifting component 72. Pin holes 711 are symmetrically provided on the outer side wall of the fixed sleeve 71, with the axis of the pin holes 711 aligned with the radial direction of the fixed sleeve 71. A rotary pin 75 is provided inside the pin holes 711, and its outer end is rotatably connected to an end cap 76 fixedly connected to the outer side wall of the fixed sleeve 71. The inner end of the rotary pin 75 extends into the rotary groove 721 and can move along the rotary groove 721. During its movement along the rotary groove 721, the rotary pin 75 can rotate around the axis of the pin hole 711 to reduce friction.

[0029] The rotary groove 721 is arranged around the circumference of the lifting member 72. Four upwardly inclined upper curved guide surfaces 7211 are evenly arranged at the top of the rotary groove 721 along the circumference of the lifting member 72. The top of each upper curved guide surface 7211 is set as an arc vertex 7212, and a first vertical guide surface 7213 is formed between the arc vertex 7212 and the bottom of the adjacent upper curved guide surface 7211. The bottom of the rotary groove 721 is evenly arranged along the circumference of the lifting member 72. There are four downwardly inclined downward curved guide surfaces 7214. The bottom end of each downward curved guide surface 7214 is set as a limiting bottom point 7215, and the limiting bottom point 7215 and the top of the adjacent downward curved guide surface 7214 are set as a second vertical guide surface 7216. The limiting bottom point 7215 and the arc vertex 7212 are offset. The limiting bottom point 7215 is located below the upper curved guide surface 7211, and the arc vertex 7212 is located above the lower curved guide surface 7214.

[0030] Before lifting, the opening and closing control mechanism and the limit frame are separated. At this time, the slewing pin is at the apex of the arc of the slewing groove, and the position and angle of the fastener correspond to the clearance hole (e.g., Figure 4 (As shown); Next, the hoisting equipment moves the main hanger closer to the auxiliary hanger, causing the fastener to pass through the clearance hole and extend into the locking slot (as shown). Figure 5 As shown), when the center of the bottom of the snap fastener abuts against the bottom wall of the locking groove, the lifting component moves upward relative to the fixed sleeve, and the rotary pin moves downward to abut against the lower curved guide surface and slides along the lower curved guide surface. Under the abutment and sliding action of the rotary pin, the lifting component performs a reverse rotation action. When the rotary pin slides to the limit bottom point, the lifting component and the snap fastener rotate 90 degrees, realizing the positional angular misalignment between the snap fastener and the clearance hole (as shown). Figure 6(As shown in the diagram). At this time, when the hoisting equipment is lifted upward, the main hanger, fixed sleeve, and slewing pin move upward and abut against the upper curved guide surface, which will drive the buckle to rise and contact the top of the locking groove. Under the friction between the top of the buckle and the top of the locking groove, the slewing pin will not slide along the upper curved guide surface. The opening and closing control mechanism and the limit frame are in the engaged state, so that the first and second hooks in the lifting device are in the open state, and the lifting device can be moved to the position of the carbon block for hoisting operation. When the first and second hooks in the open state are placed on both sides of the carbon block, the hoisting equipment moves downward a certain distance, so that the top of the buckle and the top of the locking groove no longer contact each other. After losing the friction between them, the slewing pin will continue to slide along the upper curved guide surface to the apex of the arc. The lifting component continues to rotate 90 degrees in the opposite direction, aligning the position and angle of the latching component with the clearance hole again. At this point, when the hoisting equipment rises again, the latching component disengages from the clearance hole, and the main and auxiliary hangers move away from each other, causing the first and second latching components in the lifting device to be in a clamping state and clamping the charcoal block. The charcoal block can then be hoisted to the usage area with the lifting device. The above actions are then repeated continuously to achieve the release action of the lifting device on the charcoal block and the hoisting operation of the next charcoal block. Its structure is simple. The 90-degree automatic rotation action of the latching component can be achieved through the structural design between the rotary groove and the rotary pin, thereby automatically realizing the locking and unlocking state control between the opening and closing control mechanism and the limit frame. The whole process does not require manual intervention, further improving the use effect of this utility model.

[0031] This utility model employs a method where, before hoisting operations, the hoisting equipment lowers the main hoist and brings it close to the auxiliary hoist, causing the opening and closing control mechanism between the main and auxiliary hoists to be engaged. At this time, the first and second hooks are in the open state (e.g., Figure 3 (As shown); Next, the hoisting equipment lifts the entire lifting device and places it on top of the charcoal block to be hoisted, positioning the first and second hooks, which are in the open state, at opposite ends of the charcoal block; then, the opening and closing control mechanism between the main and auxiliary lifting frames is released, and the hoisting equipment moves the main lifting frame away from the auxiliary lifting frame. The forked structures of the first and second hooks, under leverage, move closer together and clamp the end walls of the charcoal block (as shown). Figure 1As shown in the diagram, as the hoisting equipment rises, the lifting device and the charcoal blocks are lifted together to the usage area. Finally, the hoisting equipment lowers the main frame and approaches the auxiliary frame, causing the first and second hooks to open again, thus securing the charcoal blocks stably in the usage area. The hoisting equipment can then proceed with the hoisting of the next charcoal block. The entire hoisting process is simple and quick, requiring no manual labor or electric telescopic boom assistance to automate the hoisting of charcoal blocks. This avoids situations where power lines become entangled or interfere with the lifting device during hoisting, reducing the production cost of the lifting device without affecting its normal hoisting operation, thereby effectively improving the performance of the charcoal block lifting device.

Claims

1. A charcoal block lifting device, comprising a lifting device frame, characterized in that: The lifting frame includes a main lifting frame, a first connecting rod, a second connecting rod, a first hook, a second hook, and an auxiliary lifting frame. Both the main and auxiliary lifting frames are horizontally arranged, with the auxiliary lifting frame positioned below the main lifting frame. The first and second connecting rods are symmetrically arranged at both ends of the main lifting frame along its length. The top ends of the first and second connecting rods are connected to one end of the main lifting frame along its length via pins, and the bottom ends of the first and second connecting rods are connected to one end of the first and second hooks via pins, respectively. The first and second hooks are symmetrically arranged at both ends of the auxiliary lifting frame along its length, with their middle portions connected to the two ends of the auxiliary lifting frame along its length via pins. The ends of the first and second hooks furthest from the first connecting rod and the ends of the second hook furthest from the second connecting rod open and close, and the carbon blocks are lifted using these opening and closing actions. An opening and closing control mechanism is provided between the main and auxiliary lifting frames to control the opening and closing states of the first and second hooks.

2. The charcoal block lifting device as described in claim 1, characterized in that: The main hanger is composed of two main hanger plates and a positioning frame. The two main hanger plates are symmetrically arranged front and back, and the positioning frame is fixedly connected between the two main hanger plates and is located at the center of the main hanger plates. The top ends of the first connecting rod and the second connecting rod are respectively located between the ends of the two main hanger plates in the length direction and are connected to the pin shaft of the main hanger plates.

3. The charcoal block lifting device as described in claim 2, characterized in that: The top of the positioning frame is equipped with a lifting ring, which is connected to the hoisting equipment. The bottom of the positioning frame is connected to the opening and closing control mechanism.

4. The charcoal block lifting device as described in claim 2, characterized in that: The positioning frame is provided with a guide hole, and a guide rod corresponding to the guide hole is fixedly connected to the auxiliary hanger. The length direction of the guide rod is perpendicular to the length direction of the auxiliary hanger. The bottom end of the guide rod is fixedly connected to the auxiliary hanger, and the top end of the guide rod passes through the guide hole and can slide relative to the inner wall of the guide hole.

5. The charcoal block lifting device as described in claim 1, characterized in that: The first and second hooks are provided with an open structure at the end where they are connected to the first and second connecting rod pins. The first and second hooks are nested in the opening structure on the front and rear sides of the bottom end of the first and second connecting rods respectively, and are connected to the first and second connecting rod pins through the inner wall of the opening structure. The end of the first and second hooks away from the first and second connecting rods is provided with three forked structures. The three forked structures are arranged side by side and all three forked structures are bent downwards.

6. The charcoal block lifting device as described in claim 2, characterized in that: The auxiliary hanger is composed of two auxiliary hanger plates and a limiting frame. The two auxiliary hanger plates are symmetrically arranged front and back, and the limiting frame is fixedly connected between the two auxiliary hanger plates and is located at the center of the auxiliary hanger plates. The middle parts of the first hook and the second hook are respectively arranged between the ends of the two auxiliary hanger plates in the length direction and connected to the pin shaft of the auxiliary hanger plates.

7. The charcoal block lifting device as described in claim 6, characterized in that: The opening and closing control mechanism includes a fixed sleeve, a lifting component, and a latching component. The top end of the fixed sleeve is fixedly connected to the bottom end of the positioning frame. The fixed sleeve is a cylindrical shell with openings at both ends. The lifting component is fitted inside the fixed sleeve and can rotate around the axis of the fixed sleeve. A connecting rod is fixedly connected to the bottom end of the lifting component. The bottom end of the connecting rod extends from the bottom end of the fixed sleeve and is fixedly connected to the latching component. The latching component is a rectangular prism. The limiting frame is provided with a locking groove. The top end of the locking groove is provided with a clearance hole that communicates with the outside. The clearance hole is correspondingly provided with the latching component, and the outer diameter of the clearance hole is adapted to the outer diameter of the cross-section of the latching component. When the position angle of the latching component corresponds to the clearance hole, the latching component extends from the clearance hole into the locking groove. The position angle of the latching component is misaligned with the clearance hole by the rotation of the latching component again, so as to realize the locking connection between the latching component and the limiting frame.

8. The charcoal block lifting device as described in claim 7, characterized in that: The buckle is convex at the center of its bottom end and can rotate within the locking groove.

9. The charcoal block lifting device as described in claim 7, characterized in that: The lifting component is cylindrical and is fitted inside the fixed sleeve, allowing it to slide longitudinally relative to the inner wall of the fixed sleeve. A rotary groove is provided on the circumferential side wall of the lifting component. Pin holes are symmetrically arranged on the outer side wall of the fixed sleeve, with the axis of the pin holes aligned with the radial direction of the fixed sleeve. A rotary pin is installed inside the pin holes, and the outer end of the rotary pin is rotatably connected to an end cap fixed to the outer side wall of the fixed sleeve. The inner end of the rotary pin extends into the rotary groove and can move along the rotary groove. The rotary pin can rotate around the axis of the pin hole.

10. The charcoal block lifting device as described in claim 9, characterized in that: The rotary groove is arranged around the circumference of the lifting component. Four upwardly inclined curved guide surfaces are evenly arranged at the top of the rotary groove along the circumference of the lifting component. The top of each upwardly inclined guide surface is a circular arc vertex, and the area between the circular arc vertex and the bottom of the adjacent upwardly inclined guide surface is a first vertical guide surface. Four downwardly inclined curved guide surfaces are evenly arranged at the bottom of the rotary groove along the circumference of the lifting component. The bottom of each downwardly inclined guide surface is a limiting bottom point, and the area between the limiting bottom point and the top of the adjacent downwardly inclined guide surface is a second vertical guide surface. The limiting bottom point and the circular arc vertex are offset, with the limiting bottom point located below the upwardly inclined guide surface and the circular arc vertex located above the downwardly inclined guide surface.

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