Centrifugal casting equipment for cylinder barrel of heavy hydraulic cylinder

Abstract

The invention relates to the technical field of casting, and discloses heavy hydraulic cylinder barrel centrifugal casting equipment which comprises a base and a centrifugal casting machine sliding on the surface of the base, and a raw material conveying frame formed by combining a plane and an inclined plane is installed on the base. According to the centrifugal casting equipment for the cylinder barrel of the heavy hydraulic cylinder, by means of mechanical linkage of the ejector rod, the swing arm, the blocking plate and the compensation plate, raw material conveying pre-adjustment and dynamic precise control are achieved, raw material waste is avoided, the utilization rate is increased, the forming quality of the cylinder barrel is guaranteed, and the rejection rate is reduced; the automatic circulation function covers the links of equipment insertion and separation, automatic aquadag smearing, automatic raw material compensation and the like, manual intervention is reduced, the labor intensity is reduced, and the production efficiency is greatly improved; the distributing roller and the smearing roller automatically and evenly smear aquadag to form a stable release agent coating, precise raw material control is matched, it is guaranteed that the cylinder barrel with the even wall thickness and the compact structure is produced, and the mechanical property of the product is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of casting, and specifically relates to a centrifugal casting device for heavy-duty hydraulic cylinder barrels. Background Art

[0002] In the production and manufacturing process of heavy-duty hydraulic cylinder barrels, centrifugal casting is a commonly used process method.

[0003] Currently, some centrifugal casting devices use an electric control method to control the raw material transportation. However, this control method has many defects. Since the raw material transportation pipeline is relatively long, when the electric control system issues a blocking instruction, the liquid raw materials remaining in the pipeline will not stop transporting immediately due to their fluidity and inertia. If the raw materials are blocked too early, even if the electric control system issues a stop feeding command, the liquid raw materials that continue to flow in the pipeline still cannot meet the mold filling requirements, resulting in the mold not being fully filled before stopping feeding, and finally the formed cylinder barrel has uneven wall thickness or even local material shortage, seriously affecting the structural strength and service performance of the cylinder barrel and greatly increasing the rejection rate.

[0004] If the raw material blocking time is too short, when the electric control system controls the stop of raw material transportation, due to the continuous flow of liquid raw materials in the pipeline, excessive raw materials will pour into the mold. Under the action of centrifugal force, the raw materials that exceed the bearing capacity of the mold cannot completely adhere to the inner wall of the mold, and part of the raw materials will flow out from the end face of the mold. This not only causes serious waste of raw materials and greatly increases the production cost, but also the flowing out raw materials will pollute the working environment. The remaining raw materials may solidify and block the equipment components, affecting the normal operation of the equipment, further increasing the equipment maintenance cost and maintenance frequency.

[0005] In view of this, the present invention is specifically proposed. Summary of the Invention

[0006] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] A centrifugal casting device for heavy-duty hydraulic cylinder barrels includes a base and a centrifugal casting machine sliding on its surface.

[0008] A raw material conveying rack composed of a flat surface and an inclined surface is installed on the base;

[0009] A storage tank filled with graphite emulsion is arranged at the end of the raw material conveying rack. A distributing roller is rotatably installed at the bottom of the storage tank. The distributing roller rotates following the mold of the centrifugal casting machine, and the graphite emulsion is smeared on the inner wall of the mold of the centrifugal casting machine through the notches formed on the surface of the distributing roller.

[0010] A baffle plate and a compensation plate with the same rotation center are respectively rotatably installed on the horizontal plane and the inclined plane. A swing arm is installed on the rotation center. A ejector rod adapted to the inner wall of the mold of the centrifugal casting machine is arranged on the swing arm. After the ejector rod is separated from the centrifugal casting machine, the baffle plate rotates to block the raw material transportation, and the compensation plate retracts, so that the raw materials temporarily stored between the compensation plate and the inclined plane continue to be transported to the inner wall of the end face of the mold of the centrifugal casting machine, and the mold of the centrifugal casting machine is compensated with raw materials.

[0011] As a preferred embodiment of the present invention, side plates are installed at both ends of the base. Cross beams are symmetrically installed between the surfaces of the opposite side plates. A plurality of pairs of support legs are installed at the bottom of each cross beam. The bottoms of the plurality of pairs of support legs are welded to the base. A pair of reinforcing ribs are installed on the adjacent support legs, and the pair of reinforcing ribs are in a cross state.

[0012] As a preferred embodiment of the present invention, slide rails are installed on the surfaces of the opposite side plates. A slide seat is slidably arranged on the slide rails. The side wall of the slide seat is connected to the outer shell of the centrifugal casting machine. A traction assembly is installed on the side plate, and the output end of the traction assembly is connected to the outer shell of the centrifugal casting machine.

[0013] As a preferred embodiment of the present invention, a blanking hopper is installed at the bottom of the storage box. The blanking hopper is conical. A material distribution box is installed at the bottom of the blanking hopper. A cavity closely attached to the material distribution roller is opened on the material distribution box, and the material distribution roller is attached inside the cavity. The lowest point of the material distribution roller is located below the material distribution box, and four groups of notches are opened on the material distribution roller.

[0014] As a preferred embodiment of the present invention, fixing plates are symmetrically installed on the side walls of the material distribution box. Coating rollers are rotatably installed at both ends of the fixing plates, and the two coating rollers are located on both sides of the material distribution roller. The lower surfaces of the two coating rollers and the material distribution roller are arc-shaped.

[0015] As a preferred embodiment of the present invention, a guide plate is installed on the side wall of the material distribution box. The guide plate is in an inclined state. The lower surface of the guide plate is adapted to the bottom of the material distribution roller. A rib plate is installed on the back of the guide plate, and the end of the rib plate is connected to the side wall of the material distribution box.

[0016] As a preferred embodiment of the present invention, a sliding plate is installed on the side wall of the storage box. A limiting rod is movably installed through the sliding plate. The top of the limiting rod is installed at the bottom of the raw material conveying frame. A limiting plate is installed at the bottom of the limiting rod. The diameter of the limiting plate is larger than that of the limiting rod, and the limiting plate is placed below the sliding plate. A limiting spring is sleeved on the limiting rod. One end of the limiting spring is clamped at the bottom of the raw material conveying frame, and the other end is clamped on the sliding plate.

[0017] As a preferred embodiment of the present invention, a groove is formed on the raw material conveying rack, the blocking plate is rotatably installed in the groove, and a synchronous shaft is installed at the rotation center of the blocking plate. The synchronous shaft movably penetrates the raw material conveying rack, a connecting rod is installed on the synchronous shaft, a compensation plate is installed on the connecting rod, the compensation plate is arc-shaped, and the synchronous shaft is connected to the swing arm.

[0018] As a preferred embodiment of the present invention, a sliding rod is installed at the bottom of the ejector rod, a strip-shaped groove is formed on the surface of the swing arm, the sliding rod slides in the strip-shaped groove, a positioning seat is slidably arranged on the side wall of the ejector rod, the positioning seat is installed on the side wall of the raw material conveying rack, a pressing plate is installed on the ejector rod, a compression spring is sleeved on the ejector rod, one end of the compression spring is clamped on the pressing plate, and the other end of the compression spring is clamped on the positioning seat.

[0019] As a preferred embodiment of the present invention, a synchronous plate is installed at the top of the ejector rod, a push rod is installed on the synchronous plate, and a rolling ball is rotatably installed on the push rod. The rolling ball is used to reduce the friction in the sliding of the mold in the centrifugal casting machine.

[0020] The present invention has the following beneficial effects compared with the prior art:

[0021] The heavy-duty hydraulic cylinder barrel centrifugal casting equipment of the present invention realizes the pre-adjustment and dynamic precise control of raw material conveying through the mechanical linkage of the ejector rod, swing arm, blocking plate and compensation plate, which not only avoids waste of raw materials and improves utilization rate, but also ensures the forming quality of the cylinder barrel and reduces the rejection rate; the automatic circulation function covers links such as equipment plugging and separation, automatic coating of graphite milk, and automatic compensation of raw materials, reduces manual intervention, reduces labor intensity, and greatly improves production efficiency; the feeding roller and coating roller automatically and evenly coat graphite milk to form a stable release agent coating, and cooperate with precise raw material control to ensure the production of cylinder barrels with uniform wall thickness and dense structure, and improve the mechanical properties of the products; in addition, the ingenious structural design replaces traditional manual operations, reduces labor costs, and the coordinated operation of each component ensures production stability, making the production of heavy-duty hydraulic cylinder barrels efficient, reliable and economical.

[0022] The following further describes in detail the specific embodiments of the present invention with reference to the drawings. Description of the Drawings

[0023] In the drawings:

[0024] Figure 1 is a three-dimensional structural schematic diagram of a heavy-duty hydraulic cylinder barrel centrifugal casting equipment;

[0025] Figure 2 is a Figure 1 magnified view at A in;

[0026] Figure 3 It is a partial structure of a centrifugal casting equipment for heavy-duty hydraulic cylinder barrels Figure 1 ;

[0027] Figure 4 It is a partial structure of a centrifugal casting equipment for heavy-duty hydraulic cylinder barrels Figure 2 ;

[0028] Figure 5 It is a sectional view at the storage tank of a centrifugal casting equipment for heavy-duty hydraulic cylinder barrels;

[0029] Figure 6 It is a partial structure of a centrifugal casting equipment for heavy-duty hydraulic cylinder barrels Figure 3 ;

[0030] Figure 7 It is a sectional view at the raw material conveying rack of a centrifugal casting equipment for heavy-duty hydraulic cylinder barrels.

[0031] In the figure:

[0032] 1. Base; 11. Side plate; 111. Cross beam; 112. Support leg; 113. Reinforcing rib; 12. Centrifugal casting machine; 121. Slide base; 122. Slide rail; 13. Raw material conveying rack; 131. Plane; 132. Inclined plane; 14. Traction assembly;

[0033] 2. Storage tank; 21. Feeding hopper; 211. Dividing box; 212. Dividing roller; 213. Notch; 22. Coating roller; 221. Fixed plate; 23. Guide plate; 231. Rib plate; 24. Limit rod; 241. Slide plate; 242. Limit plate; 243. Limit spring;

[0034] 3. Blocking plate; 31. Groove; 311. Synchronous shaft; 32. Swing arm; 321. Strip-shaped groove; 33. Thrust rod; 331. Slide rod; 332. Positioning seat; 333. Pressure plate; 334. Compression spring; 335. Synchronous plate; 336. Push rod; 337. Ball; 34. Compensation plate; 341. Connecting rod. Specific implementation mode

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0036] Embodiment 1:

[0037] As Figures 1 to 7 shown, a centrifugal casting equipment for heavy-duty hydraulic cylinder barrels includes a base 1 and a centrifugal casting machine 12 sliding on its surface.

[0038] On the base 1, a raw material conveying rack 13 composed of a flat surface 131 and an inclined surface 132 is installed.

[0039] At the end of the raw material conveying rack 13, a storage tank 2 filled with graphite emulsion is provided. At the bottom of the storage tank 2, a material distributing roller 212 is rotatably installed. The material distributing roller 212 rotates following the mold of the centrifugal casting machine 12, and the graphite emulsion is smeared on the inner wall of the mold of the centrifugal casting machine 12 through the notches 213 formed on the surface of the material distributing roller 212.

[0040] On the flat surface 131 and the inclined surface 132, a blocking plate 3 and a compensating plate 34 with the same rotation center are rotatably installed respectively. A swing arm 32 is installed on the rotation center. A ejector rod 33 adapted to the inner wall of the mold of the centrifugal casting machine 12 is provided on the swing arm 32. After the ejector rod 33 is separated from the centrifugal casting machine 12, the blocking plate 3 rotates to block the raw material conveyance, and the compensating plate 34 retracts, so that the raw materials temporarily stored between the compensating plate 34 and the inclined surface 132 continue to be conveyed to the inner wall of the end face of the mold of the centrifugal casting machine 12, and raw material compensation is performed on the mold of the centrifugal casting machine 12. This structural design realizes the pre-adjustment and dynamic compensation of raw material conveyance. Compared with traditional equipment, it effectively reduces raw material waste, ensures the sufficiency and uniformity of raw materials during the forming of the cylinder barrel, reduces the rejection rate, and improves the product quality.

[0041] As Figures 1 to 7 shown, in the specific implementation, side plates 11 are installed at both ends of the base 1. Cross beams 111 are symmetrically installed between the opposite surfaces of the side plates 11. A plurality of pairs of support legs 112 are installed at the bottom of each cross beam 111. The bottoms of the plurality of pairs of support legs 112 are welded to the base 1. A pair of reinforcing ribs 113 are installed on the adjacent support legs 112, and the pair of reinforcing ribs 113 are in a cross state. This structure enhances the overall stability of the base. When the centrifugal casting machine rotates at a high speed, it can effectively reduce the vibration of the equipment, avoid the deviation of raw material conveyance and the damage of the mold caused by vibration, extend the service life of the equipment, and provide a stable working environment for precise casting, indirectly improving the product quality.

[0042] As Figures 1 to 7 shown, further, slide rails 122 are installed on the opposite surfaces of the side plates 11. A slide block 121 is slidably arranged on the slide rails 122. The side wall of the slide block 121 is connected to the outer shell of the centrifugal casting machine 12. A traction assembly 14 is installed on the side plate 11. The output end of the traction assembly 14 is connected to the outer shell of the centrifugal casting machine 12. The traction assembly 14 is a prior art, and its working principle will not be elaborated here. The above-mentioned sliding connection and traction design make the movement of the centrifugal casting machine smoother and more accurate, facilitate the accurate docking and separation of the centrifugal casting machine and the raw material conveying rack, ensure the continuity and stability of the production process, and improve the production efficiency.

[0043] Embodiment 2:

[0044] The difference between the above embodiment and this embodiment is as follows: As Figures 1 to 7 shown, a blanking hopper 21 is installed at the bottom of the storage box 2. The blanking hopper 21 is conical. A material distribution box 211 is installed at the bottom of the blanking hopper 21. A cavity tightly fitting with the material distribution roller 212 is provided on the material distribution box 211, and the material distribution roller 212 fits inside the cavity. The lowest point of the material distribution roller 212 is located below the material distribution box 211, and four groups of notches 213 are provided on the material distribution roller 212. The design of the conical blanking hopper and the material distribution box can make the graphite milk flow more smoothly to the material distribution roller, ensuring that the material distribution roller continuously and stably obtains the graphite milk, providing guarantee for uniformly applying the release agent.

[0045] As Figures 1 to 7 shown, in the specific implementation, fixing plates 221 are symmetrically installed on the side walls of the material distribution box 211. Rotating coating rollers 22 are installed at both ends of each fixing plate 221, and the two coating rollers 22 are located on both sides of the material distribution roller 212. The lower surfaces of the two coating rollers 22 and the material distribution roller 212 are arc-shaped. A guiding plate 23 is installed on the side wall of the material distribution box 211. The guiding plate 23 is in an inclined state. The lower surface of the guiding plate 23 is adapted to the bottom of the material distribution roller 212. A rib plate 231 is installed on the back of the guiding plate 23, and the end of the rib plate 231 is connected to the side wall of the material distribution box 211. The design of the arc-shaped cooperating coating rollers and the material distribution roller, as well as the guiding plate, can make the coating of the graphite milk on the inner wall of the mold more uniform, effectively improving the demolding effect, reducing defects such as sticking to the mold and pulling cracks, improving the product qualification rate and production efficiency, and at the same time reducing the mold repair cost caused by demolding problems.

[0046] As Figures 1 to 7 shown, further, a sliding plate 241 is installed on the side wall of the storage box 2. A limiting rod 24 is movably installed through the sliding plate 241. The top of the limiting rod 24 is installed at the bottom of the raw material conveying frame 13. A limiting plate 242 is installed at the bottom of the limiting rod 24. The diameter of the limiting plate 242 is larger than that of the limiting rod 24, and the limiting plate 242 is placed below the sliding plate 241. A limiting spring 243 is sleeved on the limiting rod 24. One end of the limiting spring 243 is clamped to the bottom of the raw material conveying frame 13, and the other end is clamped to the sliding plate 241. This limiting structure enables the material distribution roller to adapt to the shape of the inner wall of the mold. During the operation of the equipment, it can ensure that the material distribution roller always maintains good contact with the inner wall of the mold. Even if there are certain manufacturing errors or wear in the mold, it can ensure the accuracy and stability of the graphite milk coating, improve the product quality while reducing the production adjustment time caused by poor equipment adaptability, and improve the production efficiency.

[0047] Embodiment 3:

[0048] The difference between the above embodiment and this embodiment is as follows: As Figures 1 to 7As shown, a groove 31 is formed on the raw material conveying frame 13. The blocking plate 3 is rotatably installed in the groove 31, and a synchronizing shaft 311 is installed at the rotation center of the blocking plate 3. The synchronizing shaft 311 movably penetrates through the raw material conveying frame 13. A connecting rod 341 is installed on the synchronizing shaft 311, and a compensating plate 34 is installed on the connecting rod 341. The compensating plate 34 is arc-shaped, and the synchronizing shaft 311 is connected to the swing arm 32. This linkage structure design realizes the synchronous movement of the blocking plate and the compensating plate. Compared with the independent control structure, it can adjust the raw material conveying amount more timely and accurately, avoid raw material waste and casting defects, and improve the raw material utilization rate and product quality.

[0049] As Figures 1 to 7 shown, in the specific implementation manner, a sliding rod 331 is installed at the bottom of the ejector rod 33. A strip-shaped groove 321 is formed on the surface of the swing arm 32. The sliding rod 331 slides in the strip-shaped groove 321. A positioning seat 332 is slidably arranged on the side wall of the ejector rod 33. The positioning seat 332 is installed on the side wall of the raw material conveying frame 13. A pressing plate 333 is installed on the ejector rod 33. A compression spring 334 is sleeved on the ejector rod 33. One end of the compression spring 334 is clamped on the pressing plate 333, and the other end of the compression spring 334 is clamped on the positioning seat 332. This structure realizes the control of raw material conveying through mechanical transmission, and the mechanical structure has higher stability and lower maintenance cost, ensuring the reliability and continuity of the production process.

[0050] As Figures 1 to 7 shown, further, a synchronizing plate 335 is installed at the top of the ejector rod 33. A push rod 336 is installed on the synchronizing plate 335. A rolling ball 337 is rotatably installed on the push rod 336. The rolling ball 337 is used to reduce the friction in the sliding of the mold of the centrifugal casting machine 12. The design of the rolling ball converts sliding friction into rolling friction, reduces the wear between the ejector rod and the mold, extends the service life of the equipment components, and at the same time ensures the sensitivity and accuracy of the ejector rod movement, ensuring the stable and reliable control of raw material conveying.

[0051] The implementation principle of a heavy-duty hydraulic cylinder barrel centrifugal casting equipment of the present invention is as follows:

[0052] When casting is required, the operator first inserts the centrifugal casting machine 12 as a whole into the raw material conveying rack 13 through the traction assembly 14 (the traction assembly 14 is prior art and its specific working principle will not be elaborated here). During the insertion process, first, under the guiding action of the guiding plate 23, the entire storage tank 2 moves upward and compresses the limiting spring 243. When the feeding roller 212 is completely attached to the mold inside the centrifugal casting machine 12, the limiting spring 243 tightly attaches the feeding roller 212 to the inner wall of the mold of the centrifugal casting machine 12. This design enables the feeding roller 212 to adapt to the shape of the inner wall of the mold, ensuring the accuracy of subsequent graphite emulsion coating, avoiding uneven coating caused by poor contact, and thus affecting the demolding effect, effectively improving the product quality and production stability.

[0053] And during the above process, the ejector rod 33 is extruded by the inner wall of the mold of the centrifugal casting machine 12, so it moves downward, driving the ejector rod 33 to move downward, and then driving the swing arm 32 to swing, making the blocking plate 3 and the plane 131 flush at this time. And at this time, the compensating plate 34 extends on the inclined surface 132, thus blocking a part of the conveyed raw materials, facilitating subsequent compensation operations. This structure realizes the pre-adjustment of raw material conveying through mechanical linkage, provides guarantee for subsequent precise control of the raw material quantity, avoids excessive waste of raw materials, and improves the utilization rate of raw materials.

[0054] When in formal use, the centrifugal casting machine 12 drives the internal mold to rotate at a high speed, and through the traction assembly 14, the centrifugal casting machine 12 is moved away from the raw material conveying rack 13. At this time, the raw material conveying rack 13 continuously conveys molten raw materials inward. After the raw materials fall onto the inclined surface 132, a part will be blocked by the compensating plate 34 and temporarily stay in the space between the compensating plate 34 and the inclined surface 132, and the other part falls into the mold of the centrifugal casting machine 12. Through high-speed rotation centrifugation, it adheres to the inner wall to form a tubular structure. This step-by-step raw material conveying method not only ensures the sufficiency of the initial filling of raw materials in the mold but also provides a buffer space for subsequent supplementation, making the casting process more controllable, contributing to the production of a cylinder barrel with uniform wall thickness and dense structure, and improving the mechanical properties and overall quality of the product.

[0055] During the rotation of the mold in the centrifugal casting machine 12, the material distributing roller 212 is driven to rotate. When the notch 213 on the surface of the material distributing roller 212 passes by the discharging hopper 21 at the bottom of the storage tank 2, the graphite milk is scooped up. As the material distributing roller 212 continues to rotate, the graphite milk in the notch 213 is carried to the inner wall of the mold of the centrifugal casting machine 12. Since the coating rollers 22 on both sides of the material distributing roller 212 are arc-shaped and closely cooperate with the lower surface of the material distributing roller 212, when the material distributing roller 212 carries the graphite milk to the inner wall of the mold, the coating rollers 22 will evenly apply the graphite milk on the surface of the inner wall of the mold, forming a thin and uniform graphite milk coating, which acts as a mold release agent and effectively reduces the adhesion between the mold and the molten raw material. This automatic graphite milk coating mechanism replaces the traditional manual coating method, not only improving the production efficiency, reducing the labor cost, but also ensuring the consistency and stability of the coating, and greatly reducing the probability of defects such as sticking and tearing during the mold release process.

[0056] During the process of the centrifugal casting machine 12 gradually moving away from the raw material conveying rack 13 through the traction assembly 14, the ejector rod 33 separates from the inner wall of the mold. After the compression spring 334 loses the pressure from the inner wall of the mold, it starts to rebound and pushes the ejector rod 33 to slide upward along the positioning seat 332. When the ejector rod 33 moves upward, the slide rod 331 slides in the strip-shaped groove 321 of the swing arm 32, driving the swing arm 32 to swing reversely around its rotation center. The swing of the swing arm 32 is transmitted to the blocking plate 3 and the compensation plate 34 through the synchronizing shaft 311, causing the blocking plate 3 to rotate and rise around its rotation center, blocking the raw materials on the blocking plane 131 from continuing to be conveyed forward, avoiding excessive raw materials entering the mold and causing waste or affecting the casting quality; at the same time, the compensation plate 34 retracts, and the raw materials that were originally blocked and temporarily stored between the compensation plate 34 and the inclined surface 132, under the action of gravity, continue to be conveyed along the inclined surface 132 to the inner wall of the end face of the mold of the centrifugal casting machine 12, replenishing the raw materials in the mold, ensuring that a cylinder with a uniform thickness and good quality can be formed on the inner wall of the mold under the action of centrifugal force. This automatic adjustment process realizes the dynamic and precise control of the raw materials, not only avoiding waste and casting defects caused by excessive raw materials, but also timely replenishing the raw materials to ensure the forming quality of the cylinder, reducing the rejection rate, and improving the production efficiency and economic benefits.

[0057] After centrifugal casting is completed, the traction assembly 14 works again to move the centrifugal casting machine 12 back to the raw material conveyor rack 13. During this process, the inner wall of the mold will squeeze the ejector rod 33 again. The downward pressure of the ejector rod 33 drives the swing arm 32 to swing. The blocking plate 3 descends to be flush with the plane 131. The compensation plate 34 extends to block the raw materials. Under the action of the limit spring 243, the material distribution roller 212 fits tightly against the inner wall of the mold again. The equipment returns to the initial state, preparing for the next centrifugal casting. Such a cycle realizes the continuous and efficient production of heavy-duty hydraulic cylinder barrels. The automated cycle design of the entire equipment reduces manual intervention, lowers labor intensity, improves production continuity and stability, and makes the production of heavy-duty hydraulic cylinder barrels more efficient, reliable, and economical.

Claims

1. A heavy-duty hydraulic cylinder barrel centrifugal casting device, comprising a base (1) and a centrifugal casting machine (12) sliding on its surface, characterized in that: A raw material conveying frame (13) composed of a flat surface (131) and an inclined surface (132) is installed on the base (1); A storage tank (2) for filling graphite milk is arranged at the end of the raw material conveying frame (13). A distributing roller (212) is rotatably installed at the bottom of the storage tank (2). The distributing roller (212) rotates following the mold of the centrifugal casting machine (12), and the graphite milk is smeared onto the inner wall of the mold of the centrifugal casting machine (12) through a notch (213) formed on the surface of the distributing roller (212); A blocking plate (3) and a compensating plate (34) with the same rotation center are respectively rotatably installed on the flat surface (131) and the inclined surface (132). An oscillating arm (32) is installed on the rotation center. A push rod (33) adapted to the inner wall of the mold of the centrifugal casting machine (12) is arranged on the oscillating arm (32). After the push rod (33) is separated from the centrifugal casting machine (12), the blocking plate (3) rotates to block the raw material conveying, and the compensating plate (34) retracts, so that the raw material temporarily stored between the compensating plate (34) and the inclined surface (132) continues to be conveyed to the inner wall of the end face of the mold of the centrifugal casting machine (12) to compensate the raw material for the mold of the centrifugal casting machine (12).

2. The centrifugal casting equipment for the cylinder barrel of a heavy-duty hydraulic cylinder according to claim 1, characterized in that, Side plates (11) are installed at both ends of the base (1). Cross beams (111) are symmetrically installed between the surfaces of the opposite side plates (11). A plurality of pairs of support legs (112) are installed at the bottom of each cross beam (111). The bottoms of the plurality of pairs of support legs (112) are welded to the base (1). A pair of reinforcing ribs (113) are installed on the adjacent support legs (112), and the pair of reinforcing ribs (113) are in a crossed state.

3. A centrifugal casting device for a heavy-duty hydraulic cylinder barrel according to claim 2, characterized in that, Sliding rails (122) are installed on the surfaces of the opposite side plates (11). A sliding seat (121) is slidably arranged on the sliding rails (122). The side wall of the sliding seat (121) is connected to the outer shell of the centrifugal casting machine (12). A traction assembly (14) is installed on the side plate (11), and the output end of the traction assembly (14) is connected to the outer shell of the centrifugal casting machine (12).

4. A centrifugal casting device for a heavy-duty hydraulic cylinder barrel according to claim 1, characterized in that, A feeding hopper (21) is installed at the bottom of the storage tank (2). The feeding hopper (21) is conical. A distributing box (211) is installed at the bottom of the feeding hopper (21). A cavity tightly fitting with the distributing roller (212) is formed on the distributing box (211), and the distributing roller (212) is fitted inside the cavity. The lowest point of the distributing roller (212) is located below the distributing box (211), and four groups of notches (213) are formed on the distributing roller (212).

5. A centrifugal casting device for a heavy-duty hydraulic cylinder barrel according to claim 4, characterized in that, Fixing plates (221) are symmetrically installed on the side walls of the distributing box (211). Smearing rollers (22) are rotatably installed at both ends of the fixing plates (221), and the two smearing rollers (22) are located on both sides of the distributing roller (212). The lower surfaces of the two smearing rollers (22) and the distributing roller (212) are arc-shaped.

6. A centrifugal casting device for a heavy-duty hydraulic cylinder barrel according to claim 4, characterized in that, A guide plate (23) is installed on the side wall of the material distribution box (211). The guide plate (23) is in an inclined state. The lower surface of the guide plate (23) is adapted to the bottom of the material distribution roller (212). A rib plate (231) is installed on the back surface of the guide plate (23), and the end of the rib plate (231) is connected to the side wall of the material distribution box (211).

7. A centrifugal casting device for a heavy-duty hydraulic cylinder barrel according to claim 1, characterized in that, A sliding plate (241) is installed on the side wall of the storage box (2). A limiting rod (24) is movably installed through the sliding plate (241). The top of the limiting rod (24) is installed at the bottom of the raw material conveying frame (13). A limiting plate (242) is installed at the bottom of the limiting rod (24). The diameter of the limiting plate (242) is larger than that of the limiting rod (24), and the limiting plate (242) is placed below the sliding plate (241). A limiting spring (243) is sleeved on the limiting rod (24). One end of the limiting spring (243) is clamped at the bottom of the raw material conveying frame (13), and the other end is clamped on the sliding plate (241).

8. A centrifugal casting device for a heavy-duty hydraulic cylinder barrel according to claim 1, characterized in that, A groove (31) is formed in the raw material conveying frame (13). The blocking plate (3) is rotatably installed in the groove (31), and a synchronous shaft (311) is installed at the rotation center of the blocking plate (3). The synchronous shaft (311) movably passes through the raw material conveying frame (13). A connecting rod (341) is installed on the synchronous shaft (311). A compensating plate (34) is installed on the connecting rod (341), and the compensating plate (34) is arc-shaped. The synchronous shaft (311) is connected to the swing arm (32).

9. A centrifugal casting device for a heavy-duty hydraulic cylinder barrel according to claim 1, characterized in that, A sliding rod (331) is installed at the bottom of the ejector rod (33). A strip-shaped groove (321) is formed on the surface of the swing arm (32). The sliding rod (331) slides in the strip-shaped groove (321). A positioning seat (332) is slidably arranged on the side wall of the ejector rod (33). The positioning seat (332) is installed on the side wall of the raw material conveying frame (13). A pressing plate (333) is installed on the ejector rod (33). A compression spring (334) is sleeved on the ejector rod (33). One end of the compression spring (334) is clamped on the pressing plate (333), and the other end of the compression spring (334) is clamped on the positioning seat (332).

10. A centrifugal casting device for a heavy-duty hydraulic cylinder barrel according to claim 1, characterized in that, A synchronous plate (335) is installed at the top of the ejector rod (33). A push rod (336) is installed on the synchronous plate (335). A rolling ball (337) is rotatably installed on the push rod (336). The rolling ball (337) is used to reduce the friction during the sliding of the mold in the centrifugal casting machine (12).

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