Liner plate transfer machine for ball mill and application
By designing a highly adaptable transfer track and trolley device, the problems of space adaptability, cost and safety in the process of ball mill liner replacement were solved, realizing efficient and safe liner transfer and automatic unloading.
Patent Information
- Application Number
- CN202511450292.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2025-11-14
AI Technical Summary
Existing technologies for replacing ball mill liners suffer from poor space adaptability, high cost, low efficiency, and insufficient safety.
A mechanical device was designed, comprising a transfer track, a transfer trolley, and a self-unloading tipper. The device adapts to narrow spaces through the design of folding legs and telescopic legs, uses a winding device to pull the trolley to move, and combines clamps and locking devices to achieve automatic unloading and stable transfer of the liner.
It enables rapid disassembly and assembly without modifying the factory area, improving the efficiency and safety of liner replacement, reducing costs, and is applicable to different types of ball mills, thus reducing manpower requirements and safety hazards.
Smart Images
Figure CN120942844A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of heavy component transfer technology in confined spaces, specifically to a ball mill liner transfer machine and its application. Background Technology
[0002] Ball mills are core equipment in mineral processing, undertaking the crucial task of mineral grinding and liberation. They achieve efficient liberation of valuable minerals from gangue through the movement of grinding media within the mill, resulting in uniform particle size and increased specific surface area in the ground ore, which contributes to improved subsequent separation efficiency and product quality. The stable operation of a ball mill largely depends on the normal working condition of its key internal components—the liners and grate plates. The liners primarily protect the mill body, mitigating the impact of grinding media and materials, and extending equipment life; their design also allows for adjustment of the grinding media's trajectory, thereby optimizing grinding efficiency. The grate plates, on the other hand, provide forced discharge, accelerating ore turnover, reducing over-grinding, and increasing the ball mill's processing capacity. Therefore, to ensure grinding capacity and the structural safety of the mill body, it is essential to prevent liners and grate plates from experiencing failures such as perforation, compression, or breakage during operation.
[0003] Liners are consumable parts with a typical service life of 4 to 6 months, requiring periodic shutdowns for replacement. Taking a φ3.2×6.0 wet overflow ball mill as an example, its cylinder contains 154 liners with an average weight of 100 kg and 48 grid plates with an average weight of 150 kg. Currently, some new concentrators use specialized liner hoisting vehicles for replacement operations: these devices are typically specially modified, relying on a "T"-shaped track system to extend the hoisting arm into a 600 mm diameter, approximately 2000 mm long feeding device. Workers inside the cylinder then disassemble and attach the liners before slowly moving them out.
[0004] However, this method is poorly suited for early-built concentrators. The main reasons include: no space was reserved for hoisting equipment during plant construction; liner hoisting vehicles are expensive; and multiple ball mills of different types, functions, and discharge directions are often located within the same concentrator, making equipment sharing difficult and resulting in extremely high overall costs. If manual transfer is used, five to six workers are required to operate in a relay within the narrow feeding device; the complete removal of the liners and grate plates alone would take at least 24 hours, resulting in extremely low efficiency. Furthermore, the working environment for manually handling heavy objects is harsh—high temperature and oxygen deficiency inside the cylinder, pervasive moisture, poor visibility; the liners themselves are heavy, smooth, and difficult to secure, making them prone to slippage and shaking during transfer, posing significant safety hazards and seriously affecting production progress and personnel safety.
[0005] Therefore, existing technologies need to be improved. Summary of the Invention
[0006] The technical problems to be solved by this invention are poor spatial adaptability, high cost, low efficiency and insufficient safety. The purpose is to provide a ball mill liner transfer machine and its application, which realizes liner replacement operation without modifying the plant area, quick disassembly and assembly, stable transfer and automatic unloading.
[0007] This invention is achieved through the following technical solution:
[0008] In a first aspect, the present invention provides a ball mill liner transfer mechanism, comprising a transfer track and a transfer trolley moving on the transfer track, the transfer trolley being rotatably connected to a self-unloading tipper.
[0009] The top of the transfer trolley is equipped with a first rotating shaft mounting seat, and the bottom of the self-unloading tipper is equipped with a second rotating shaft mounting seat. The second rotating shaft mounting seat and the first rotating shaft mounting seat are both inserted into a rotating shaft. The second rotating shaft mounting seat is misaligned with the center line of the self-unloading tipper. The self-unloading tipper, which is supporting the liner, automatically flips over due to the shift in the center of gravity, thereby completing the automatic unloading of the liner.
[0010] The transfer trolley is equipped with a locking device, which is connected to the side of the self-unloading flap near the second rotating shaft mounting base.
[0011] The transfer trolley is equipped with a clamp, and the clamp is equipped with a pressure plate, which abuts against the top of the liner of the self-unloading tipper.
[0012] Furthermore, in this invention, a take-up device is provided on both sides of the aforementioned transfer track, the take-up device is provided with a rotating take-up wheel, a traction line is wound in the groove of the take-up wheel, and the traction lines on both sides are connected to the front and rear sides of the transfer trolley.
[0013] Furthermore, in this invention, the aforementioned transfer trolley is provided with safety buckles on both the front and rear sides, and the safety buckles are connected to the traction line.
[0014] Furthermore, in this invention, the aforementioned transfer track is rotatably connected to a folding leg, the folding leg is provided with a connecting rod for limiting, the connecting rod is provided with a slot, and the transfer track is provided with a limiting pin adapted to the slot.
[0015] Furthermore, in this invention, the bottom of the folding leg is provided with a telescopic leg, the folding leg is provided with a first limiting hole, and the telescopic leg is provided with a second limiting hole that is adapted to the first limiting hole. The first limiting hole and the second limiting hole are inserted together with a pin to complete the fixation.
[0016] Furthermore, in this invention, the locking device described above includes a pressure rod hinged to the side wall of the transfer trolley, the pressure rod is provided with a torsion spring that generates torque, the top of the pressure rod is provided with a triangular locking head one, and the side of the self-unloading flap near the rotating shaft mounting seat two is provided with a triangular locking head two that is adapted to the triangular locking head one.
[0017] Furthermore, in this invention, the aforementioned clamp includes a fixed plate connected to the transfer trolley, a clamping member is provided on the side wall of the fixed plate, the clamping member is connected to a fixing rod, and the fixing rod is connected to the pressure plate.
[0018] Furthermore, in this invention, the bottom of the pressure plate is provided with elastic friction teeth that abut against the liner.
[0019] Furthermore, in this invention, the above-mentioned transfer trolley is provided with guard plates on both sides, and the guard plates extend to the outside of the transfer track to maintain stable movement.
[0020] Secondly, the present invention also provides an application of the aforementioned ball mill liner transfer mechanism, wherein the transfer mechanism is used for liner transfer operations in a ball mill, and the specific application steps include:
[0021] 1. Track deployment: Unfold the folding legs of the transfer track and fix them with the limit pins through the slots of the connecting rods. Adjust the telescopic legs to make the track horizontal. One end of the transfer track extends to the inlet of the ball mill feeding device, and the other end connects to the factory ground or temporary storage platform. The cable take-up devices on both sides are fixed to the preset installation points at the ends of the track.
[0022] 2. Liner loading: The operator places the liner to be replaced flat on the self-unloading flap, operates the clamping rod to press down the pressure plate, and uses the elastic friction teeth to press the top of the liner. At the same time, the locking device's pressure rod engages with the triangular clip one and triangular clip two to fix the self-unloading flap and prevent it from tipping over.
[0023] 3. Transfer control: The traction line is wound up and down by the winding wheel of the winding device, which pulls the transfer trolley to move along the track. The guard plate is used to keep the trolley stable and transfer the liner from the ball mill cylinder to the other end of the track through the feeding device.
[0024] 4. Automatic unloading: When the transfer trolley arrives at the storage platform, the operator triggers the locking device and presses the lever to disengage the triangular clamp. Due to the misalignment of the rotating shaft mounting seat 2 with the center line, the center of gravity of the self-unloading flap shifts, and it automatically flips around the rotating shaft, tilting the liner onto the storage platform to complete a single transfer.
[0025] 5. Cyclic operation: The empty transfer trolley is pulled back to the inlet of the feeding device by the wire take-up device, and steps 2-4 are repeated until all the liners to be replaced in the ball mill are removed; and during the liner installation operation, the above steps can be reversed to transfer the new liner from the storage platform to the designated installation position in the cylinder.
[0026] Compared with the prior art, the present invention has the following advantages and beneficial effects:
[0027] 1. Strong spatial adaptability: The transfer track adopts a folding leg and telescopic leg design, which does not require modification of existing plant facilities. It can be quickly disassembled and adjusted, and is suitable for the narrow working space of early ore dressing plants, solving the problem that special cranes cannot be installed.
[0028] 2. Lower cost: The overall structure of the device is simple, mainly composed of metal components, and the manufacturing cost is much lower than that of a special liner hoisting vehicle; moreover, the same set of devices can be adapted to ball mills of different types and different discharge directions, realizing equipment sharing and reducing the overall cost of the mineral processing plant.
[0029] 3. High transfer efficiency: The transfer trolley is pulled by a winding device, resulting in a shorter transfer time per trip and significantly improved efficiency compared to manual transfer. Furthermore, multiple devices can operate in parallel, further shortening the liner replacement cycle. For example, in a wet overflow ball mill, traditional manual transfer requires six people working continuously for 24 hours, while this invention requires only two people working five hours to complete the same task, improving operational efficiency while reducing manpower requirements.
[0030] 4. High safety: The liner is fixed by the elastic friction teeth of the clamp to prevent it from sliding during the transfer; the locking device can prevent the self-unloading tipper from accidentally overturning; the guard plate of the transfer trolley can prevent it from tipping over; only 2-3 operators are needed throughout the process, and there is no need to carry it in a relay in the narrow feeding device, which greatly reduces safety hazards and ensures the personal safety of operators.
[0031] 5. Easy to operate: The deployment, loading, transportation and unloading process of the entire device is simple. Operators can operate it after simple training. No professional technicians are required, which reduces labor costs and the operating threshold. Attached Figure Description
[0032] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:
[0033] Figure 1This is a schematic diagram of the ball mill liner transfer mechanism of the present invention;
[0034] Figure 2 This is a schematic diagram of the cooperation between the transfer trolley and the clamp of the present invention;
[0035] Figure 3 These are front and side views of the self-unloading flap of the present invention.
[0036] Figure 4 This is a schematic diagram of the cooperation between the transfer trolley and the locking device of the present invention;
[0037] Figure 5 This is a front view of the clamp of the present invention;
[0038] Figure 6 This is a schematic diagram of the folding leg and telescopic leg of the present invention;
[0039] Figure 7 This is a schematic diagram of the installation of the safety buckle of the present invention;
[0040] Figure 8 This is a schematic diagram of the present invention used in a ball mill liner transfer mechanism.
[0041] The attached diagram shows the markings and corresponding component names: 1-Transfer track, 101-Folding leg, 1011-Limiting hole one, 102-Connecting rod, 1021-Slot, 103-Limiting pin, 104-Telescopic leg, 1041-Limiting hole two, 2-Transfer trolley, 201-Spindle mounting seat one, 202-Safety buckle, 203-Triangular clamp two, 204-Guard plate, 3-Self-unloading flap, 301-Spindle mounting seat two, 4-Locking device, 401-Pressure rod, 402-Triangular clamp one, 5-Clamp, 501-Fixing plate, 502-Clamping component, 503-Fixing rod, 504-Pressure plate, 505-Elastic friction chuck, 6-Take-up device, 601-Take-up reel, 602-Traction line. Detailed Implementation
[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments and accompanying drawings. The illustrative embodiments and descriptions of this invention are for explanation only and are not intended to limit the invention. The following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.
[0043] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0044] Example 1
[0045] Embodiment 1 of the present invention provides the following technical solution:
[0046] Combination Figure 1 As shown, a ball mill liner transfer mechanism includes a transfer track 1 and a transfer trolley 2 that moves on the transfer track 1. The transfer trolley 2 is rotatably connected to a self-unloading tipper 3. The specific structure is as follows:
[0047] Transfer track 1: combined Figure 1 and Figure 6 As shown, the transfer track 1, serving as the moving carrier for the transfer trolley 2, can be made of relatively long channel steel. The transfer track 1 has take-up devices 6 on both sides. Each take-up device 6 includes a fixed base and a rotatable take-up reel 601. The fixed base is a short section of channel steel, and it is bolted to the transfer track 1. The take-up reel 601 is connected to the fixed base via a bracket. A high-strength traction line 602, preferably steel wire rope, is wound in the groove of the take-up reel 601. The traction lines 602 on both sides are connected to the front and rear sides of the transfer trolley 2, respectively, for pulling the trolley along the track. A motor (preferably a servo motor) is mounted on the fixed base. The motor drives the axle of the take-up reel 601 to rotate via gears, thereby driving the take-up reel 601 to unload or retract the line. The take-up devices 6 on both sides cooperate to drive the transfer trolley 2 to move laterally left and right on the transfer track 1.
[0048] It should be noted that the bottom center of the transfer track 1 is provided with a strip hole extending along the axis, which facilitates the passage of the traction line 602.
[0049] Furthermore, in combination Figure 1 and Figure 6As shown, a short section of channel steel is fixedly installed at the bottom of the transfer track 1. Four sets of folding legs 101 (two sets at each end of the transfer track 1) are rotatably connected to the side wall of the short section of channel steel. A connecting rod 102 for limiting is hinged to the outside of the folding leg 101. A strip-shaped slot 1021 is opened at the end of the connecting rod 102 away from the folding leg 101. A limiting pin 103 adapted to the slot 1021 is welded to the outer wall of the short section of channel steel at the bottom of the transfer track 1. The folding legs are unfolded and fixed by the engagement of the slot 1021 and the limiting pin 103.
[0050] Combination Figure 6 As shown, a telescopic leg 104 is inserted into the bottom of the folding leg 101. Two limiting holes 1011 are evenly distributed along the height direction on the side wall of the folding leg 101. Five limiting holes 1041 (two of which are fitted into the first 1011) are distributed on the side wall of the telescopic leg 104. After adjusting the extension length of the telescopic leg 104, pins are inserted into the two limiting holes 1011, and these pins are also inserted into the corresponding limiting holes 1041, thus fixing the height. The folding leg 101 and the telescopic leg 104 work together to facilitate adjustment of the track's levelness.
[0051] Transfer cart 2: Combined Figure 1 and Figure 2 As shown, the transfer trolley 2 serves as the main body for supporting and transferring the liner plate. Three rotating shaft mounting seats 201 are welded to its top, and wheels adapted to the transfer track 1 are installed at the bottom of the transfer trolley 2. Combined with... Figure 7 As shown, safety buckles 202 are welded to the front and rear sides of the transfer trolley 2, respectively. The safety buckles 202 are connected to the traction line 602 of the take-up device 6 to prevent the traction line 602 from falling off.
[0052] Furthermore, a top plate is installed on the top of the transfer trolley 2, and downward-extending guard plates 204 are connected to both sides of the top plate. The guard plates 204 are located on the outside of the transfer track 1, which can prevent the trolley from tipping over during movement and ensure stable movement.
[0053] Self-unloading tipper 3: Combined with Figure 1 , Figure 2 and Figure 3 As shown, the self-unloading flap 3 is the direct load-bearing component of the liner plate. Two rotating shaft mounting seats 301 corresponding to the rotating shaft mounting seat 201 are welded to its bottom. The rotating shaft mounting seats 301 and the center line of the self-unloading flap 3 are offset, and the distance of the offset is 1 / 5 to 1 / 4 of the flap length.
[0054] Furthermore, the rotating shaft mounting base 201 and the rotating shaft mounting base 301 are inserted together into a rotating shaft, allowing the self-unloading flap 3 to rotate around the rotating shaft; for example... Figure 3 As shown, a triangular clip 203 is welded to the side of the self-unloading flap 3 near the rotating shaft mounting base 301, which works with the locking device 4 to fix the flap.
[0055] Locking device 4: Combination Figure 1 and Figure 4 As shown, the locking device 4 includes a pressure rod 401 hinged to the side wall of the transfer trolley 2. A torsion spring (not shown) is fitted at the hinge point between the pressure rod 401 and the transfer trolley 2. One end of the torsion spring is fixed to the side wall of the transfer trolley 2, and the other end is fixed to the pressure rod 401, which can generate a locking mechanism. Figure 4 The pressure rod 401 has a clockwise rotation torque. The top of the pressure rod 401 is connected to a triangular clip 402 (which can be fixed by welding). The triangular clip 402 is compatible with the triangular clip 203 of the self-unloading flap 3. The self-unloading flap 3 is locked by engaging. Pressing the pressure rod 401 can disengage the triangular clip 402 and the triangular clip 203, thus releasing the lock.
[0056] It should be noted that, as Figure 4 In the middle, the lower section of the pressure bar 401 bends to the left, which is conducive to applying pressure.
[0057] Fixture 5: Combination Figure 1 , Figure 2 and Figure 5 As shown, the clamp 5 includes a fixing plate 501 fixed to the side wall of the transfer trolley 2. The fixing plate 501 can be fixed by bolt connection. A clamping member 502 (preferably a U-shaped clamp) is installed on the side wall of the fixing plate 501. A fixing rod 503 is inserted inside the clamping member 502. After the clamping member 502 is tightened, the fixing rod 503 is fixed.
[0058] The top of the fixing rod 503 is connected to a pressure plate 504; the bottom of the pressure plate 504 is equipped with an elastic friction tooth 505 (preferably made of rubber with anti-slip texture on the surface). The elastic friction tooth 505 can tightly abut against the top of the liner to prevent the liner from sliding during transportation and further improve the fixing effect.
[0059] Example 2
[0060] Example 2 provides the application of ball mill liner transfer machinery, combined with Figure 8 As shown, the transfer mechanism of Example 1 is used for the transfer of liners in a ball mill. The specific application steps include:
[0061] 1. Track Deployment: Before operation, the worker moves the transfer track 1 to the ball mill feeding device, unfolds the folding leg 101 at the bottom of the transfer track 1, and engages the slot 1021 of the connecting rod 102 with the limiting pin 103 of the transfer track 1 to fix the folding leg 101. Then, adjust the extension length of the telescopic leg 104 as needed to keep the transfer track 1 horizontal (which can be calibrated with a level). Extend one end of the transfer track 1 to the inlet of the ball mill feeding device, and connect the other end to the factory ground or temporary storage platform at the same height as the track. Finally, fix the take-up devices 6 on both sides to the preset installation points at the ends of the transfer track 1 and check the rotation flexibility of the take-up reel 601.
[0062] 2. Liner loading: The pressure rod 401 of the locking device 4 returns to its original position under the action of the torsion spring, so that the first triangular clamp 402 engages with the second triangular clamp 203 of the self-unloading flap 3, fixing the self-unloading flap 3 and preventing it from flipping before transfer. The operator enters the ball mill barrel and places the old liner to be replaced or the new liner to be installed flat on the self-unloading flap 3 of the transfer trolley 2. The fixing rod 503 of the clamp 5 is adjusted so that the fixing rod 503 moves downward along the clamping member 502, driving the pressure plate 504 to press down until the elastic friction teeth 505 at the bottom of the pressure plate 504 tightly abut against the top of the liner. Then the clamping member 502 is adjusted to fix the fixing rod 503, completing the longitudinal fixing of the liner.
[0063] 3. Transfer control: The operator starts the motor of the take-up device 6 and controls the take-up wheel 601 to take up and release the traction line 602. The traction line 602 pulls the transfer trolley 2 to move slowly along the transfer track 1. During the process, the guard plates 204 on both sides of the transfer trolley 2 prevent the trolley from tipping over, ensuring that the liner is transferred smoothly from the ball mill cylinder through the feeding device to the other end of the transfer track 1. During the transfer process, the operator must observe the movement status of the trolley throughout the process. If jamming or deviation occurs, the equipment must be stopped immediately, adjusted, and then the operation can continue.
[0064] 4. Automatic Unloading: When the transfer trolley 2 arrives at the storage platform, the operator shuts off the take-up device 6, disassembles the fixing rod 503 and pressure plate 504, and then presses the pressure rod 401 of the locking device 4 to disengage the triangular clamp 402 from the triangular clamp 203, thus releasing the lock on the self-unloading flap 3. Due to the misalignment of the rotating shaft mounting seat 301 of the self-unloading flap 3 with the centerline, the weight of the liner causes the flap to shift its center of gravity, and the self-unloading flap 3 automatically flips around the rotating shaft, tilting the liner onto the storage platform. The unloaded liner is then lifted away by a roof crane. After unloading, the operator reverses the pressure rod 401 to reset it, preparing for the next loading.
[0065] 5. Cyclic Operation: Start the take-up device 6 to run in reverse, and use the traction line 602 to pull the empty transfer trolley 2 back to the inlet of the ball mill feed device; repeat steps 2-4 until all the old liners to be replaced in the ball mill are removed; during the liner installation operation, the above steps can be reversed: place the new liner flat on the self-unloading flip plate 3, and use the transfer trolley 2 to transfer the new liner from the storage platform to the designated installation position inside the ball mill cylinder, where the workers inside the cylinder will install it, completing the entire liner replacement process.
[0066] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A mechanism for transferring ball mill liner plates, characterized in that, It includes a transfer track (1) and a transfer trolley (2) moving on the transfer track (1), the transfer trolley (2) being rotatably connected to a self-unloading tipper (3). The top of the transfer trolley (2) is provided with a pivot mounting seat one (201), and the bottom of the self-unloading flap (3) is provided with a pivot mounting seat two (301). The pivot mounting seat two (301) and the pivot mounting seat one (201) are both inserted with a pivot. The pivot mounting seat two (301) is misaligned with the center line of the self-unloading flap (3). The self-unloading flap (3) that supports the liner automatically flips over due to the shift in the center of gravity, thereby completing the automatic unloading of the liner. The transfer trolley (2) is equipped with a locking device (4), which is connected to the side of the self-unloading flap (3) near the rotating shaft mounting base (301). The transfer trolley (2) is equipped with a clamp (5), and the clamp (5) is equipped with a pressure plate (504), which abuts against the top of the liner of the self-unloading flip plate (3).
2. The ball mill liner transfer mechanism according to claim 1, characterized in that, The transfer track (1) is provided with a take-up device (6) on both sides. The take-up device (6) is provided with a rotating take-up wheel (601). The take-up wheel (601) is wound with a traction line (602) in its groove. The traction lines (602) on both sides are connected to the front and rear sides of the transfer trolley (2).
3. The ball mill liner transfer mechanism according to claim 2, characterized in that, The transfer trolley (2) is provided with safety buckles (202) on the front and rear sides respectively, and the safety buckles (202) are connected to the traction line (602).
4. The ball mill liner transfer mechanism according to claim 1, characterized in that, The transfer track (1) is rotatably connected to a folding leg (101), the folding leg (101) is provided with a connecting rod (102) for limiting, the connecting rod (102) is provided with a slot (1021), and the transfer track (1) is provided with a limiting pin (103) adapted to the slot (1021).
5. The ball mill liner transfer mechanism according to claim 4, characterized in that, The bottom of the folding leg (101) is provided with a telescopic leg (104). The folding leg (101) is provided with a limiting hole one (1011). The telescopic leg (104) is provided with a limiting hole two (1041) that is adapted to the limiting hole one (1011). The limiting hole one (1011) and the limiting hole two (1041) are fixed by inserting a pin together.
6. The ball mill liner transfer mechanism according to claim 1, characterized in that, The locking device (4) includes a pressure rod (401) hinged to the side wall of the transfer trolley (2). The pressure rod (401) is provided with a torsion spring that generates torque. A triangular clamp head (402) is provided on the top of the pressure rod (401). A triangular clamp head (203) that is adapted to the triangular clamp head (402) is provided on the side of the self-unloading flap (3) near the rotating shaft mounting seat (301).
7. The ball mill liner transfer mechanism according to claim 1, characterized in that, The clamp (5) includes a fixed plate (501) connected to the transfer trolley (2), and a clamping member (502) is provided on the side wall of the fixed plate (501). The clamping member (502) is connected to a fixing rod (503), and the fixing rod (503) is connected to the pressure plate (504).
8. The ball mill liner transfer mechanism according to claim 7, characterized in that, The bottom of the pressure plate (504) is provided with elastic friction teeth (505) that abut against the liner.
9. The ball mill liner transfer mechanism according to claim 1, characterized in that, The transfer trolley (2) is provided with guard plates (204) on both sides, and the guard plates (204) extend to the outside of the transfer track (1) to maintain stable movement.
10. An application of the ball mill liner transfer mechanism as described in claim 1, characterized in that, The transfer mechanism is used for the transfer of liners in a ball mill. The specific application steps include: track deployment: unfold the folding leg (101) of the transfer track (1), fix it with the limiting pin (103) through the slot (1021) of the connecting rod (102), adjust the telescopic leg (104) to make the track horizontal, one end of the transfer track (1) extends to the inlet of the ball mill feeding device, and the other end is connected to the factory ground or temporary storage platform. The two side winding devices (6) are fixed at the preset installation point at the end of the track; liner loading: the operator places the liner to be replaced flat on the self-unloading flip plate (3), operates the fixing rod (503) of the clamp (5) to press down the pressure plate (504), and presses the top of the liner with the elastic friction teeth (505). At the same time, the pressure rod (401) of the locking device (4) engages with the triangular clamp head one (402) and the triangular clamp head two (203) to fix the self-unloading flip plate (3) to prevent it from overturning; transfer control System: The traction line (602) is wound up and down by the winding wheel (601) of the winding device (6), and the traction trolley (2) is moved along the track. The trolley is kept stable by the guard plate (204) and the liner is transferred from the ball mill cylinder to the other end of the track through the feeding device. Automatic unloading: When the traction trolley (2) reaches the storage platform position, the operator triggers the locking device (4) and presses the pressure rod (401) to disengage the triangular clamp. The self-unloading flip plate (3) automatically flips around the shaft due to the misalignment of the rotating shaft mounting seat (301) with the center line, and tilts the liner to the storage platform to complete a single transfer. Cyclic operation: The empty traction trolley (2) is pulled back to the inlet of the feeding device by the winding device (6) and steps 2-4 are repeated until all the liners to be replaced in the ball mill are removed. In addition, during the liner installation operation, the above steps can be reversed to transfer the new liner from the storage platform to the designated installation position in the cylinder.