A transfer car for ball mill liners

Abstract

The utility model discloses a transfer trolley for ball mill lining plate relates to heavy component's transfer technical field in the restricted space. The transfer trolley for ball mill lining plate includes transfer track and the transfer trolley main part in the motion of transfer track, and the transfer trolley main part is rotatively connected with the self -discharging type flap, and the top of transfer trolley main part is provided with pivot mounting seat no.

Description

Technical Field

[0001] This utility model relates to the field of heavy component transfer technology in confined spaces, specifically to a transfer vehicle for ball mill liners. 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 averaging 100 kg each and 48 grid plates averaging 150 kg each. Currently, some concentrators rely on manual labor for liner transfer. If manual transfer is used, five to six workers must work in shifts within the narrow feeding device. The entire removal of the liners and grid plates alone would take at least 24 hours, resulting in extremely low efficiency. Furthermore, the manual handling of heavy objects presents a harsh working environment—high temperature and oxygen deficiency inside the cylinder, pervasive moisture, and 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. Some concentrators rely on simple supports and electric hoists for transfer operations. These devices typically extend simple supports into the feeding device, where workers inside the cylinder tie the liners together, attach the electric hoist, and then slowly move them out. However, electric hoists are prone to shaking when lifting liners, which can easily cause them to collide with the support frame, and unloading also requires manual assistance.

[0004] Therefore, existing technologies need to be improved. Utility Model Content

[0005] The technical problems to be solved by this utility model are low efficiency and insufficient safety. The purpose is to provide a transfer vehicle for ball mill liners, which realizes the replacement operation of liners by quick disassembly and assembly, stable transfer and automatic unloading.

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model provides a transfer vehicle for ball mill liners, comprising a transfer trolley body and a self-unloading tilting plate. A first rotating shaft mounting seat is provided on the top of the transfer trolley body, and a second rotating shaft mounting seat is provided on the bottom of the self-unloading tilting plate. A rotating shaft is inserted into both the first and second rotating shaft mounting seats. The second rotating shaft mounting seat is misaligned with the centerline of the self-unloading tilting plate. Due to the shift in the center of gravity caused by the misalignment, the self-unloading tilting plate, which is supporting the liner, automatically tilts, thereby completing the automatic unloading of the liner.

[0008] The main body of 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 seat.

[0009] Furthermore, in this utility model, the main body of the aforementioned transfer trolley is provided with a clamp, the clamp is provided with a pressure plate, and the pressure plate abuts against the top of the liner of the self-unloading flip plate.

[0010] Furthermore, in this utility model, safety buckles are respectively provided on the front and rear sides of the main body of the aforementioned transfer trolley, and the safety buckles are connected to the traction line that drives the main body of the transfer trolley to move.

[0011] Furthermore, in this utility model, the locking device mentioned above includes a pressure rod hinged to the side wall of the main body of the transfer trolley, the pressure rod is provided with a torsion spring that generates torque, and the top of the pressure rod is provided with a triangular locking head for restricting the self-unloading flap.

[0012] Furthermore, in this utility model, the self-unloading flap is provided with a triangular clip two that is adapted to the triangular clip two on the side near the rotating shaft mounting seat two.

[0013] Furthermore, in this utility model, the aforementioned clamp includes a fixing plate connected to the main body of the transfer trolley, a clamping member is provided on the side wall of the fixing plate, a fixing rod is connected to the clamping member, and the fixing rod is connected to the pressure plate.

[0014] Furthermore, in this invention, the bottom of the pressure plate is provided with elastic friction teeth that abut against the liner.

[0015] Furthermore, in this utility model, the aforementioned fixing plate is provided with screws that connect to the main body of the transfer trolley.

[0016] Furthermore, in this utility model, the main body of the aforementioned 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.

[0017] Furthermore, in this utility model, the main body of the aforementioned transfer trolley is provided with wheels, and the wheels are provided with anti-slip patterns.

[0018] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0019] 1. High transfer efficiency: The main body of 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. Taking a wet overflow ball mill as an example, traditional manual transfer requires 6 people working continuously for 24 hours, while this invention only requires 2 people for 5 hours to complete the same task, improving operational efficiency while reducing manpower requirements.

[0020] 2. 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 main body 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 relay the material in the narrow feeding device, which greatly reduces safety hazards and ensures the personal safety of operators.

[0021] 3. 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

[0022] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model 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:

[0023] Figure 1 This is a schematic diagram of the transfer vehicle for ball mill liners according to the present invention;

[0024] Figure 2 This is a schematic diagram showing the cooperation between the main body of the transfer trolley and the clamp of this utility model;

[0025] Figure 3 These are front and side views of the self-unloading flap of this utility model.

[0026] Figure 4 This is a schematic diagram showing the cooperation between the main body of the transfer trolley and the locking device of this utility model;

[0027] Figure 5 This is a front view of the clamp of this utility model;

[0028] Figure 6 This is a schematic diagram of the folding leg and telescopic leg of this utility model;

[0029] Figure 7 This is a schematic diagram of the installation of the safety buckle of this utility model;

[0030] Figure 8 This is a schematic diagram of the transfer vehicle used for ball mill liners according to this utility model.

[0031] 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 body, 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-Cable take-up device, 601-Cable take-up reel, 602-Traction line. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only for explaining the present utility model and are not intended to limit the present utility model. The following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the present utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0033] 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 this utility model, 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 utility model according to the specific circumstances.

[0034] Example

[0035] The present invention, in embodiment 1, provides the following technical solution:

[0036] Combination Figure 1 As shown, a transfer vehicle for ball mill liners includes a transfer track 1 and a transfer trolley body 2 that moves on the transfer track 1. The transfer trolley body 2 is rotatably connected to a self-unloading tipper 3. The specific structure is as follows:

[0037] Transfer track 1: combined Figure 1 and Figure 6 As shown, the transfer track 1, serving as the motion carrier for the main body 2 of the transfer trolley, 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 main body 2 of the transfer trolley, 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 main body 2 of the transfer trolley to move laterally left and right on the transfer track 1.

[0038] 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.

[0039] Furthermore, in combination Figure 1 and Figure 6 As 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.

[0040] 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.

[0041] Transfer trolley main body 2: combined Figure 1 and Figure 2 As shown, the main body 2 of the transfer trolley serves as the support and transfer body for the liner plate. Three rotating shaft mounting seats 201 are welded to its top. Wheels adapted to the transfer track 1 are installed at the bottom of the main body 2 of the transfer trolley, and the wheels have anti-slip textures.

[0042] Combination Figure 7 As shown, safety buckles 202 are welded to the front and rear sides of the main body 2 of the transfer trolley. 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.

[0043] Furthermore, a top plate is installed on the top of the main body 2 of the transfer trolley, 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.

[0044] 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.

[0045] 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.

[0046] 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 body 2. A torsion spring (not shown) is fitted at the hinge point between the pressure rod 401 and the transfer trolley body 2. One end of the torsion spring is fixed to the side wall of the transfer trolley body 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.

[0047] 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.

[0048] 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 main body 2 of the transfer trolley. 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.

[0049] 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.

[0050] Combination 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:

[0051] 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.

[0052] 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 cylinder 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 body 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.

[0053] 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 main body of the transfer trolley 2 to move slowly along the transfer track 1. During the process, the guard plates 204 on both sides of the main body 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.

[0054] 4. Automatic Unloading: When the main body 2 of the transfer trolley reaches the storage platform, the operator closes the take-up device 6, disassembles the fixing rod 503 and the 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.

[0055] 5. Cyclic Operation: Start the take-up device 6 to run in reverse, and use the traction line 602 to pull the unloaded transfer trolley body 2 back to the ball mill feed device inlet; 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 body 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.

[0056] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A transfer vehicle for ball mill liners, characterized in that, The device includes a transfer trolley body (2) and a self-unloading tipper (3). The top of the transfer trolley body (2) is provided with a pivot mounting seat 1 (201), and the bottom of the self-unloading tipper (3) is provided with a pivot mounting seat 2 (301). The pivot mounting seat 2 (301) and the pivot mounting seat 1 (201) are both inserted with a pivot. The pivot mounting seat 2 (301) is misaligned with the center line of the self-unloading tipper (3). The self-unloading tipper (3), which supports the liner, automatically flips over due to the shift in the center of gravity after the misalignment, thereby completing the automatic unloading of the liner. The main body (2) of the transfer trolley is equipped with a locking device (4), which is connected to the side of the self-unloading flap (3) near the rotating shaft mounting seat (301).

2. The transfer vehicle for ball mill liners according to claim 1, characterized in that, The main body (2) of the transfer trolley is provided with a clamp (5), the clamp (5) is provided with a pressure plate (504), and the pressure plate (504) abuts against the top of the liner plate of the self-unloading flip plate (3).

3. The transfer vehicle for ball mill liners according to claim 2, characterized in that, Safety buckles (202) are provided on the front and rear sides of the main body (2) of the transfer trolley, and the safety buckles (202) are connected to the traction line (602) that drives the main body (2) of the transfer trolley to move.

4. The transfer cart for ball mill liners according to claim 1, characterized in that, The locking device (4) includes a pressure rod (401) hinged to the side wall of the main body (2) of the transfer trolley. The pressure rod (401) is provided with a torsion spring that generates torque. The top of the pressure rod (401) is provided with a triangular clip (402) that restricts the self-unloading flap (3).

5. The transfer cart for ball mill liners according to claim 4, characterized in that, The self-unloading flap (3) has a triangular clip two (203) that is adapted to the triangular clip one (402) on the side near the rotating shaft mounting seat two (301).

6. The transfer vehicle for ball mill liners according to claim 2, characterized in that, The clamp (5) includes a fixing plate (501) connected to the main body (2) of the transfer trolley. The side wall of the fixing plate (501) is provided with a clamping member (502). The clamping member (502) is connected to a fixing rod (503). The fixing rod (503) is connected to the pressure plate (504).

7. The transfer vehicle for ball mill liners according to claim 6, characterized in that, The bottom of the pressure plate (504) is provided with elastic friction teeth (505) that abut against the liner.

8. The transfer vehicle for ball mill liners according to claim 6, characterized in that, The fixing plate (501) is provided with screws that connect to the main body (2) of the transfer trolley.

9. The transfer vehicle for ball mill liners according to claim 1, characterized in that, The main body (2) of the transfer trolley 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. The transfer vehicle for ball mill liners according to any one of claims 1-9, characterized in that, The main body (2) of the transfer trolley is equipped with wheels, and the wheels are provided with anti-slip treads.

Images