Hydraulic device for processing environment-friendly composite well lid

Abstract

The present application relates to the technical field of press machine, specifically to a hydraulic device for processing environment-friendly composite well lid, which comprises a lifting platform, a flexible device arranged in the lifting platform, a piston column connected above the flexible device, a hydraulic cylinder for driving the piston column to lift, an upper beam platform for supporting the hydraulic cylinder, a mold cover body fixed at the bottom of the lifting platform, a mold arranged below the mold cover body, a base platform fixed at the bottom end of the mold, and a stand column sliding through the four corners of the lifting platform, environment-friendly composite material is loaded in the mold, the mold cover body is lowered to compress the mold to realize the forming of the well lid, in this process, the spring plate is used to provide flexible force for the forming of the well lid, so as to avoid the problems of uneven material flow and fiber misplacement in the mold pressing process, improve the production quality of the well lid, the spring plate is automatically replaced to avoid the problem of elastic damage caused by frequent bending work, and the elastic force applied by the spring plate is ensured to be kept in a specified range.

Description

Technical Field

[0001] This invention relates to the field of press technology, specifically to a hydraulic device for processing environmentally friendly composite manhole covers. Background Technology

[0002] Hydraulic presses are used to produce manhole covers using environmentally friendly composite materials. A mold is fixed on a worktable at the bottom of the press, and the mold cover is fixed on a lifting platform. A hydraulic cylinder drives a piston to extend, which in turn lowers the lifting platform. As the mold cover descends, it presses against the mold, causing the composite material within to be molded. Rigid compression can easily lead to material delamination or damage. A flexible mechanism can be incorporated into the lifting platform to achieve flexible compression. Precision molding can be achieved through multi-stage pressure control, avoiding problems such as uneven material flow and fiber misalignment during the molding process.

[0003] Specifically, a spring plate is installed in the lifting platform to apply strong elastic force to the mold, so that the internal composite material can be better compressed and formed. The spring plate deforms itself when pressure is applied. As the number of deformations increases, it needs to be rested and recovered to avoid the irreversible recovery problem caused by frequent deformation, that is, to prevent metal fatigue and prevent the spring plate from gradually losing its elasticity until it completely loses its elasticity. For this purpose, the present invention provides a hydraulic device for processing environmentally friendly composite material manhole covers. Summary of the Invention

[0004] The purpose of this invention is to provide a hydraulic device for processing environmentally friendly composite material manhole covers, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic device for processing environmentally friendly composite manhole covers, comprising a lifting platform, a flexible device disposed within the lifting platform, a piston rod connected above the flexible device, a hydraulic cylinder for driving the piston rod to rise and fall, an upper beam platform supporting the hydraulic cylinder, a mold cover fixed to the bottom of the lifting platform, a mold disposed below the mold cover, a base platform fixed to the bottom of the mold, and columns that slide through all four corners of the lifting platform, the columns being fixed between the upper beam platform and the base platform, the flexible device comprising:

[0006] A cross plate, which is fixed to the bottom of the piston column, and the edge of the cross plate supports the branch plate set on the lifting platform;

[0007] The cross plate is equipped with elastic tools around its four sides, and each elastic tool is equipped with a corresponding wheel pressure tool. The wheel pressure tool is installed on the lifting platform. The cross plate drives the elastic tools to press the wheel pressure tool, thereby providing flexible pressure for mold forming.

[0008] The multi-control device is connected to the middle of the lower part of the cross plate. The multi-control device detects the deformation state of the elastic tool and also drives the wheel pressure tool. The multi-control device is attracted to the raised multi-control device by a fixed magnetic column on the upper beam platform.

[0009] The elastic tool includes:

[0010] The suspension plate is fixed to the cross plate, and two parallel suspension shafts are fixed below the suspension plate;

[0011] A row of spring plates is supported between two suspension shafts. The spring plates are composed of multiple stacked arc-shaped spring pieces, and the end plates of the spring plates are movably connected to the suspension shafts by curling.

[0012] The wheel press includes:

[0013] The concave support frame fixed on the lifting platform, the horizontal shaft supported on the concave support frame, and the vertical worm gear supported at one end of the concave support frame, with the vertical worm gear and the gear fixed at the end of the horizontal shaft engaging in transmission.

[0014] A row of cams fixed on the horizontal axis.

[0015] The cam includes a cylinder and a sector plate fixed on one side of the cylinder. Each sector plate on a row of cams faces a different direction, and the direction of the facing is to divide the circumference evenly.

[0016] The multi-control device includes a row of coaxial lifting rings, multiple fixed folded columns around the outside of each lifting ring, L-shaped locking columns fixed inside each lifting ring, and a ring locking group fixedly connected to a cross plate. The multiple L-shaped locking columns are evenly arranged around the ring locking group, and the bottom ends of the L-shaped locking columns of different lengths are inserted into the ring locking group. A row of spring plates controls the row of lifting rings by pushing the folded columns of different lengths, and each spring plate corresponds to one lifting ring.

[0017] The multi-control device also includes a stop group located below the ring clamp group, a accumulator group connected to the stop group below the stop group, and a magnetic drive group for limiting the stop group. The magnetic drive group and the accumulator group are connected, and the stop group is connected to the vertical worm gear drive.

[0018] The ring clamp assembly includes a suspension ring body fixed below the cross plate, multiple fixed positioning seats on the suspension ring body, a unit clamp plate that slides through a plate hole on the positioning seat, a compression spring that applies elastic force to the unit clamp plate, and an S-shaped pull spring connecting the L-shaped clamp post and the positioning seat. One end of the L-shaped clamp post passes through a square sliding hole on the positioning seat and is inserted into a square groove on the unit clamp plate.

[0019] The stop assembly includes a cylindrical cap-shaped cover, a multi-position shaft movably sleeved at the center of the cylindrical cap, a mainspring fixedly sleeved on the multi-position shaft, and a stop spring fixed on the cylindrical cap. The outer end of the mainspring is fixed on the cylindrical cap, and the edge of the cylindrical cap meshes with a gear at the end of the vertical worm gear through an external gear ring. The stop spring contacts and intercepts a unit plate.

[0020] The magnetic drive assembly includes a ring frame surrounding the outside of the circular cover, multiple locking pins surrounding the ring frame, multiple branch rods vertically fixed outside the ring frame, unit springs sleeved on the branch rods, and a permanent magnetic disk fixed to the upper end of the branch rods.

[0021] The magnetic column controls the axial movement of the branch rod by attracting the nearby permanent disk. The chuck column is equipped with a spherical end to insert into the circular hole opened on the cover. The unit spring is supported between the cross plate and the ring cylinder set on the branch rod.

[0022] The accumulator assembly includes an L-shaped rack fixed on a ring frame, a ring gear driven on one side of the L-shaped rack, a one-way bearing fixed in the middle of the ring gear, a lap worm gear that establishes transmission between the one-way bearing and the multi-position shaft, and a tail plate frame for supporting the lap worm gear and the multi-position shaft, the tail plate frame being fixed on the suspension ring body.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. Environmentally friendly composite materials are loaded into the mold, and the manhole cover is formed by pressing the mold by lowering the mold cover. During this process, the spring plate applies pressure to provide flexible force for the manhole cover forming, avoiding uneven material flow and fiber misalignment during the molding process, thus improving the production quality of the manhole cover. The automatic replacement of the spring plate avoids the elastic damage caused by frequent bending work, ensuring that the elastic force applied by the spring plate remains within the specified range.

[0025] 2. In this invention, a row of spring plates is set in all four directions of the lifting platform. In each row, one spring plate is selected to apply a downward elastic force to the lifting platform. The working spring plates in each row are rotated. If any spring plate is damaged, the damaged spring plate will be removed from the rotation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention.

[0027] Figure 2 This is a schematic diagram showing the location of the magnetic column.

[0028] Figure 3 This is a schematic diagram of a cross-shaped plate structure.

[0029] Figure 4 This is a schematic diagram showing the location of the elastic device.

[0030] Figure 5 This is a schematic diagram showing the positions of multiple control fixtures.

[0031] Figure 6 This is a schematic diagram of the elastic device structure.

[0032] Figure 7 This is a schematic diagram of the position of the folded cylinder.

[0033] Figure 8 This is a schematic diagram showing the location of the magnetic drive assembly.

[0034] Figure 9 This is a diagram showing the position of the ring card set.

[0035] Figure 10 This is a schematic diagram of the ring card assembly structure.

[0036] Figure 11 This is a schematic diagram of the magnetic drive assembly.

[0037] Figure 12 This is a schematic diagram of the permanent disk location.

[0038] Figure 13 This is a schematic diagram of the accumulator assembly structure.

[0039] Figure 14 This is a schematic diagram of the unit card plate location.

[0040] In the diagram: 1. Lifting platform; 2. Flexible device; 3. Piston column; 4. Hydraulic cylinder; 5. Upper beam platform; 6. Mold cover; 7. Mold; 8. Base platform; 9. Column; 10. Magnetic column; 11. Cross plate; 12. Elastic tool; 13. Wheel press; 14. Multi-control tool; 15. Suspension plate; 16. Suspension shaft; 17. Spring plate; 18. Concave seat frame; 19. Horizontal shaft; 20. Vertical worm gear; 21. Cam; 22. Lifting ring; 23. Folding column; 24. L-shaped locking column; 25. Ring locking assembly. 25. Stop-start assembly 26. Accumulator assembly 27. Magnetic drive assembly 28. S-shaped spring clip 29. Positioning seat 30. Unit clamping plate 31. Compression spring 32. Suspension ring body 33. Stop-start spring clip 34. Multi-position shaft 35. Mainspring 36. Round cover body 37. Clamping head post 38. Ring frame 39. Permanent disk 40. Unit spring 41. Branch rod 42. L-shaped rack 43. Ring cylinder gear 44. One-way bearing 45. Lap-in worm gear 46. Tailplate frame 47. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the technical solutions of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1 to 14 This invention provides a technical solution: a hydraulic device for processing environmentally friendly composite manhole covers, comprising a lifting platform 1, a flexible device 2 disposed in the lifting platform 1, a piston rod 3 connected above the flexible device 2, a hydraulic cylinder 4 for driving the piston rod 3 to rise and fall, an upper beam platform 5 supporting the hydraulic cylinder, a mold cover 6 fixed to the bottom of the lifting platform 1, a mold 7 disposed below the mold cover 6, a base platform 8 fixed to the bottom of the mold 7, and columns 9 that slide through all four corners of the lifting platform 1, the columns 9 being fixed between the upper beam platform 5 and the base platform 8. The flexible device 2 includes:

[0043] The cross plate 11 is fixed to the bottom of the piston rod 3, and its edge supports the branch plate on the lifting platform 1. The middle part of the cross plate 11 is fixedly sleeved on the surface of the piston rod 3, which can be interference-fitted or welded. Its shape is similar to a cross and can be combined with the attached... Figure 4 Understandably, the four sets of side plates of the cross plate support the branch plates.

[0044] The cross plate 11 is provided with elastic tools 12 around its lower perimeter, and a wheel presser 13 is provided below each elastic tool 12. The wheel presser 13 is installed on the lifting platform 1. The cross plate 11 drives the elastic tools 12 to press the wheel presser 13, thereby providing flexible pressure for mold forming.

[0045] The multi-control device 14 is connected to the middle of the lower part of the cross plate 11. The multi-control device 14 detects the deformation state of the elastic device 12. The multi-control device 14 also drives the wheel pressure device 13. The multi-control device 14 is attracted to the upper beam platform 5 after it is raised by the fixed magnetic column 10.

[0046] refer to Figure 6 Understanding, the wheel press 13 includes:

[0047] The concave seat 18 fixed on the lifting platform 1, the horizontal shaft 19 supported on the concave seat 18, and the vertical worm gear 20 supported at one end of the concave seat 18, the gear meshing transmission between the vertical worm gear 20 and the end fixed to the horizontal shaft 19, and the horizontal shaft 19 and the vertical worm gear 20 respectively movably sleeved in different through holes opened on the concave seat 18.

[0048] A row of cams 21 is fixed on the horizontal axis 19.

[0049] The cam 21 includes a cylinder and a sector plate fixed on one side of the cylinder. Each sector plate on a row of cams 21 faces a different direction, and the direction of the facing is to divide the circumference evenly.

[0050] refer to Figure 6 Understood, the elastic device 12 includes:

[0051] The suspension plate 15 is fixed on the cross plate 11, and two parallel suspension shafts 16 are fixed below the suspension plate 15;

[0052] A row of spring plates 17 is supported between the two suspension shafts 16. The spring plates 17 are composed of multiple stacked arc-shaped spring pieces, and the end plates of the spring plates 17 are movably connected to the suspension shafts 16 by curling.

[0053] Manhole cover production process: The composite material is poured into the mold 7, and then the piston column 3 drives the flexible device 2 to control the lifting platform 1 to descend, and then the mold cover 6 descends to press the mold 7, so that the composite material in the mold 7 is compressed and formed.

[0054] Inside the lifting platform 1, the piston rod 3 drives the cross plate 11 to descend, and the cross plate 11 drives the spring fixture 12 to descend as a whole. Each spring fixture 12 has a row of spring plates 17. One spring plate 17 is selected to press the wheel pressure fixture 13 below. The wheel pressure fixture 13 and the lifting platform 1 rise and fall synchronously. As can be seen from the previous section on the manhole cover production and forming process, the elastic force provided by the spring plate 17 is the flexible pressure applied during the manhole cover forming process. The spring plate 17 itself is bent by reverse pressure. In order to avoid the irreversible recovery problem caused by multiple deformation and bending of a single spring plate 17, the row of spring plates 17 in the spring fixture 12 works in turn. If a single spring plate 17 has already had an irreversible recovery problem, this spring plate 17 will no longer be put into operation. That is, the remaining spring plates 17 are rotated for operation, and the damaged spring plate 17 will not be rotated again.

[0055] The piston column 3 is divided into four directions below, with a row of springs 12 in each direction. A spring plate 17 is selected from each row of springs 12 to apply pressure, thus balancing the pressure on the lifting platform 1 from directly above.

[0056] refer to Figure 7 The multi-control device 14 includes a row of coaxial lifting rings 22, multiple fixed folded columns 23 surrounding each lifting ring 22, L-shaped locking posts 24 corresponding to and fixed inside each lifting ring 22, and a ring locking group 25 fixedly connected to the cross plate 11. The multiple L-shaped locking posts 24 are evenly arranged around the ring locking group 25, and the bottom ends of the L-shaped locking posts 24 of different lengths are inserted into the ring locking group 25. A row of spring plates 17 controls the row of lifting rings 22 by pushing the folded columns 23 of different lengths, and each spring plate 17 corresponds to one lifting ring 22.

[0057] refer to Figure 8 It is understood that the multi-control device 14 also includes a stop group 26 disposed below the ring clamp group 25, a accumulator group 27 connected to the stop group 26, a magnetic drive group 28 for limiting the stop group 26, the magnetic drive group 28 and the accumulator group 27 being connected, and the stop group 26 being connected to the vertical worm gear 20.

[0058] The ring clamp assembly 25 includes a suspension ring body 33 fixed below the cross plate 11, multiple fixed positioning seats 30 on the suspension ring body 33, a unit clamping plate 31 that slides through a plate hole on the positioning seat 30, a compression spring 32 that applies elastic force to the unit clamping plate 31, and an S-shaped pull spring 29 connecting the L-shaped clamping post 24 and the positioning seat 30. One end of the L-shaped clamping post 24 passes through a square sliding hole on the positioning seat 30 and is inserted into a square groove on the unit clamping plate 31. The ring clamp assembly 25 is vertically fixed to the cross plate 11 by setting an arc-shaped upright plate. One end of the S-shaped pull spring 29 is fixed to the L-shaped clamping post 24 and the other end is fixed to the positioning seat 30. One end of the unit clamping plate 31 is provided with a vertical plate, and the compression spring 32 is supported between the vertical plate of the unit clamping plate 31 and the positioning seat 30. The compression spring 32 is sleeved on a guide rod provided on the unit clamping plate 31.

[0059] The stop assembly 26 includes a cylindrical cap 37, a multi-position shaft 35 movably sleeved at the center of the cylindrical cap 37, a spring 36 fixedly sleeved on the multi-position shaft 35, and a stop spring 34 fixedly sleeved on the cylindrical cap 37. The outer end of the spring 36 is fixed to the cylindrical cap 37. The edge of the cylindrical cap 37 is connected to the gear at the end of the vertical worm gear 20 via an external gear ring. The stop spring 34 contacts and intercepts a unit plate 31. The multi-position shaft 35 is movably sleeved in the through hole in the middle of the cylindrical cap 37. The multi-position shaft 35 and the cylindrical cap 37 can rotate relative to each other. At the same time, the multi-position shaft 35 supports the cylindrical cap 37. Multiple unit plates 31 are evenly arranged around the cylindrical cap 37. The spring 36 is distributed inside the cylindrical cap 37.

[0060] The magnetic drive assembly 28 includes a ring frame 39 surrounding the outer side of the circular cover 37, a plurality of locking pins 38 fixed in the middle of the ring frame 39, a plurality of branch rods 42 vertically fixed outside the ring frame 39, a unit spring 41 sleeved on the branch rods 42, and a permanent magnetic disk 40 fixed to the upper end of the branch rods 42.

[0061] The magnetic column 10 controls the axial movement of the branch rod 42 by adsorbing the nearby permanent disk 40. The chuck column 38 is inserted into the round hole opened on the round cover 37 by setting a spherical end. The unit spring 41 is supported between the cross plate 11 and the ring cylinder set on the branch rod 42.

[0062] The accumulator assembly 27 includes an L-shaped rack 43 fixed on a ring frame 39, a ring gear 44 driven on one side of the L-shaped rack 43, a one-way bearing 45 fixed in the middle of the ring gear 44, a lap worm gear 46 establishing transmission between the one-way bearing 45 and the multi-position shaft 35, and a tailplate frame 47 for supporting the lap worm gear 46 and the multi-position shaft 35. The tailplate frame 47 is fixed on the suspension ring 33. (See reference) Figure 13The meshing transmission between the helical teeth on the lap worm 46 and the gear fixed at the end of the multi-position shaft 35 is understood. The lap worm 46 and the multi-position shaft 35 are respectively movably sleeved in the two through holes opened on the tail plate frame 47. The lifting and lowering of the ring frame 39 will drive the locking pin 38. After the locking pin 38 descends, it is inserted into the round hole opened on the round cover 37, which can restrict the rotation of the round cover 37.

[0063] A row of spring plates 17 on the elastic tool 12 will apply downward pressure in turn. That is, after every few manhole covers are produced, the mechanism of rotating the spring plates 17 is automatically triggered. The working principle of the rotating spring plates 17 is as follows: after each manhole cover is produced, the lifting platform 1 will rise and reset. The piston column 3 drives the flexible device 2 to rise. The permanent magnet 40 is magnetically attracted by the magnetic column 10 after rising. The permanent magnet 40 drives the branch rod 42. The branch rod 42 rises relative to the round cover body 37. The branch rod 42 drives the ring frame 39. The ring frame 39 drives the L-shaped rack 43. Figure 13 The rising of the L-shaped rack 43 causes the ring gear 44 to rotate, which in turn drives the worm gear 46 via the one-way bearing 45, causing the multi-position shaft 35 to rotate. Conversely, during the next manhole cover production, the lifting platform 1 will descend again, the magnetic attraction between the permanent magnet 40 and the magnetic column 10 will disappear, ultimately causing the L-shaped rack 43 to descend. Continuous manhole cover production will result in the L-shaped rack 43 rising and falling continuously, with subsequent transmission causing the multi-position shaft 35 to rotate continuously in one direction. The rotation of the multi-position shaft 35 causes the spring 36 to contract and store power. After producing multiple manhole covers, the spring 36 has sufficient power to break the locking mechanism between the stop spring 34 and the unit clamping plate 31, causing the round cover 37 to rotate until the stop spring 34 is intercepted by the next unit clamping plate 31. The round cover 37 rotates at a fixed angle, corresponding to the alternating mechanism in the row of spring plates 17. That is, the round cover 37 drives the vertical worm gear 20, and the vertical worm gear 20 rotates a fixed number of times, causing the horizontal shaft 19 to rotate at a fixed angle. (See reference...) Figure 6 The horizontal axis 19 will rotate 90 degrees, thus separating the spring plate 17 and cam 21 at the right end. A new cam 21 will rotate upward to contact the upper spring plate 17. In this way, the entire row of spring plates 17 will descend, and only the single cam 21 that makes contact will be pressed. That is, a new spring plate 17 will be replaced to apply downward pressure. The rotation of the round cover 37 will drive all the vertical worm gears 20, that is, the multiple rows of spring plates 17 arranged in a circle. Replacement work occurs in each row of spring plates 17. Similarly, if a single spring plate 17 in a row of spring plates 17 is damaged, this spring plate 17 will be kicked out of the rotation. In each of the remaining rows of spring plates 17, a corresponding spring plate 17 will be kicked out.

[0064] Further analysis of the previous paragraph shows that the replacement occurs when the lifting platform 1 is raised, because magnetic attraction occurs at this time. This corresponds to the ring frame 39 rising relative to the round cover 37, and the locking pin 38 being pulled out of the round cover 37, allowing the round cover 37 to rotate and triggering the subsequent replacement mechanism of the spring plate 17.

[0065] If spring plate 17 suffers irreversible bending damage, it will be removed from the rotation replacement mechanism. The principle for removal is as follows: Under normal circumstances... Figure 7 When the spring plate 17 is pushed upwards, its middle section rises, preventing it from contacting the folding column 23. However, after irreversible damage, the spring plate 17 softens and deforms more easily. Applying the same upward reaction force to the spring plate 17 causes its middle section to rise even higher. This upward rise pushes the folding column 23, which in turn causes a lifting ring 22 to rise. Multiple folding columns 23, fixed to the lifting ring 22, rise synchronously. The rise of a single lifting ring 22 also causes an L-shaped locking pin 24 to rise. After rising, the L-shaped locking pin 24 is pulled out of the unit locking plate 31, thus pushing the unit locking plate 31 with the compression spring 32. One end of the unit plate 31 leaves the surrounding path of the stop spring 34. The stop spring 34 is missing an interception point on the surrounding path. This interception point corresponds to the damaged spring plate 17. That is, the driving source for the replacement of the spring plate 17 is the rotation of the cover 37. As mentioned before, the rotation stop point of the cover 37 corresponds to a cam 21 that contacts the upper spring plate 17. The rotation stop point on the cover 37 is lost, and the corresponding cam 21 will no longer contact the upper spring plate 17. This spring plate 17 is the damaged spring plate 17. The cover 37 will no longer be intercepted by the moving unit plate 31 during rotation. The cover 37 continues to rotate until it is intercepted by the third unit plate 31.

[0066] Further analysis of the previous paragraph: After the lifting platform 1 descends, it participates in the forming of the manhole cover. At this time, the middle of the damaged spring plate 17 hits the corresponding folding column 23. Subsequently, a corresponding unit clamping plate 31 leaves the surrounding path of the stop spring 34. At this time, the round cover 37, which is fixedly connected to the stop spring 34, will not rotate. Therefore, the clamping column 38 clamps the round cover 37. After the manhole cover is produced, the lifting platform 1 rises and magnetic attraction pulls the clamping column 38 out of the round cover 37. Only then will the round cover 37 rotate under the drive of the spring 36, and finally the damaged spring plate 17 will be kicked out.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic device for processing environmentally friendly composite manhole covers, comprising a lifting platform, a flexible device disposed within the lifting platform, a piston rod connected above the flexible device, a hydraulic cylinder for driving the piston rod to rise and fall, an upper beam platform supporting the hydraulic cylinder, a mold cover fixed to the bottom of the lifting platform, a mold disposed below the mold cover, a base platform fixed to the bottom of the mold, and columns that slide through all four corners of the lifting platform, wherein the columns are fixed between the upper beam platform and the base platform, characterized in that: The flexible device includes: A cross plate, which is fixed to the bottom of the piston column, and the edge of the cross plate supports the branch plate set on the lifting platform; The cross plate is equipped with elastic tools around its four sides, and each elastic tool is equipped with a corresponding wheel presser. The wheel presser is installed on the lifting platform. The cross plate drives the elastic tools to press the wheel presser, thereby providing flexible pressure for mold forming. The multi-control device is connected to the middle of the lower part of the cross plate. The multi-control device detects the deformation state of the elastic tool and also drives the wheel pressure tool. The multi-control device after the lifting is attracted by the fixed magnetic column on the upper beam platform. The elastic tool includes a row of spring plates, and the wheel press includes a vertical worm gear; The multi-control device includes a row of coaxial lifting rings, multiple fixed folded columns around the outside of each lifting ring, L-shaped locking columns fixed inside each lifting ring, and a ring locking group fixedly connected to the cross plate. Multiple L-shaped locking posts are evenly arranged around the ring locking group, and the bottom ends of L-shaped locking posts of different lengths are inserted into the ring locking group. A row of spring plates controls a row of lifting rings by pushing the folded pillars of different lengths respectively, and each spring plate corresponds to a lifting ring. The multi-control device also includes a stop group located below the ring clamp group, a accumulator group connected to the stop group below the stop group, and a magnetic drive group for limiting the stop group. The magnetic drive group and the accumulator group are connected, and the stop group is connected to the vertical worm gear drive.

2. The hydraulic device for processing environmentally friendly composite manhole covers according to claim 1, characterized in that: The elastic device also includes: The suspension plate is fixed on the cross plate, and two parallel suspension shafts are fixed below the suspension plate. A row of spring plates is supported between the two suspension shafts. The spring plates are composed of multiple stacked arc-shaped spring pieces, and the end plates of the spring plates are movably connected to the suspension shafts by curling.

3. The hydraulic device for processing environmentally friendly composite manhole covers according to claim 2, characterized in that: The wheel press also includes: The recessed frame is fixed on the lifting platform, and the horizontal shaft is supported on the recessed frame. One end of the recessed frame supports the vertical worm gear, and the vertical worm gear and the gear fixed at the end of the horizontal shaft mesh for transmission. A row of cams fixed on the horizontal axis.

4. The hydraulic device for processing environmentally friendly composite manhole covers according to claim 3, characterized in that: The cam includes a cylinder and a sector plate fixed on one side of the cylinder. Each sector plate on a row of cams faces a different direction, and the direction of the facing is to divide the circumference evenly.

5. The hydraulic device for processing environmentally friendly composite manhole covers according to claim 1, characterized in that: The ring clamp assembly includes a suspension ring body fixed below the cross plate, multiple fixed positioning seats on the suspension ring body, a unit clamp plate that slides through a plate hole on the positioning seat, a compression spring that applies elastic force to the unit clamp plate, and an S-shaped pull spring connecting the L-shaped clamp post and the positioning seat. One end of the L-shaped clamp post passes through a square sliding hole on the positioning seat and is inserted into a square groove on the unit clamp plate.

6. The hydraulic device for processing environmentally friendly composite manhole covers according to claim 5, characterized in that: The stop assembly includes a cylindrical cap-shaped cover, a multi-position shaft movably sleeved at the center of the cylindrical cap, a mainspring fixedly sleeved on the multi-position shaft, and a stop spring fixed on the cylindrical cap. The outer end of the mainspring is fixed on the cylindrical cap, and the edge of the cylindrical cap meshes with a gear at the end of the vertical worm gear through an external gear ring. The stop spring contacts and intercepts a unit plate.

7. The hydraulic device for processing environmentally friendly composite material manhole covers according to claim 6, characterized in that: The magnetic drive assembly includes a ring frame surrounding the outside of the circular cover, multiple locking pins surrounding the ring frame, multiple branch rods vertically fixed outside the ring frame, unit springs sleeved on the branch rods, and a permanent magnetic disk fixed to the upper end of the branch rods.

8. The hydraulic device for processing environmentally friendly composite manhole covers according to claim 7, characterized in that: The magnetic column controls the axial movement of the branch rod by attracting the nearby permanent disk. The chuck column is equipped with a spherical end to insert into the circular hole opened on the cover. The unit spring is supported between the cross plate and the ring cylinder set on the branch rod.

9. The hydraulic device for processing environmentally friendly composite material manhole covers according to claim 7, characterized in that: The accumulator assembly includes an L-shaped rack fixed on a ring frame, a ring gear driven on one side of the L-shaped rack, a one-way bearing fixed in the middle of the ring gear, a lap worm gear that establishes transmission between the one-way bearing and the multi-position shaft, and a tail plate frame for supporting the lap worm gear and the multi-position shaft, the tail plate frame being fixed on the suspension ring body.

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