Municipal engineering plate forging equipment

Abstract

The invention discloses municipal engineering plate forging equipment, and belongs to the field of municipal engineering, the municipal engineering plate forging equipment comprises a forging rack, a forging base is fixedly arranged on the forging rack, a linear guide rail is fixedly embedded in the forging rack, a sliding block of the linear guide rail is fixedly connected with an air cylinder, and the telescopic end of the air cylinder is fixedly connected with a forging and pressing head; a forging groove for containing a plate is formed in the forging base, a sleeve is fixedly connected to the forging rack, and an oil cavity is formed in the sleeve. By arranging the air cylinder, the piston and the spray head, in the plate forging process of the forging head, the forging force generated by the forging head on a plate is reduced, oil can be sprayed to the part, needing to be forged, of the plate in time, then forging is conducted, and the situation that the forging time is too long due to the fact that the municipal plate is too large in size is effectively avoided. And lubricating oil smeared on the surface of the plate in advance is dried and volatilized due to high temperature generated during plate forging, so that the forging and pressing head is damaged due to overlarge forging pressure and long-time use.

Description

Technical Field

[0001] The present invention relates to the field of municipal engineering, and more specifically, to a forging device for municipal engineering plates. Background Art

[0002] Municipal engineering is a broad field that covers the planning, design, construction, operation, and maintenance of urban infrastructure. It is related to the quality of life of urban residents and the sustainable development of the city.

[0003] When forging plates, lubricating oil is often sprayed on the forging surface of the plates at one time. Since the lubricating oil can form a thin film between the plates and the die, significantly reducing the friction coefficient, and thus reducing the forging force, the plates can adopt a higher forging speed during forging, shortening the forging cycle and improving production efficiency. This way of forging plates by spraying lubricating oil at one time does not require secondary oil spraying during the forging process of the plates. However, when forging plates for municipal engineering, due to the large size of the plates for municipal engineering, the forging time is long, and the plates will generate high temperature during rapid forging, and the overall temperature of the plates is relatively high. When the plates reach a certain temperature, the lubricating oil far from the forging position of the plates will volatilize and decompose, resulting in a reduction in the lubricating oil on the surface of the plates during the subsequent forging process of the plates, increasing the forging force on the forging head and causing damage to the forging head. Therefore, a forging device for municipal engineering plates is proposed. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a forging device for municipal engineering plates.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A forging device for municipal engineering plates includes a forging frame. A forging base is fixedly arranged on the forging frame. A linear guide rail is fixedly embedded on the forging frame. A cylinder is fixedly connected to the slider of the linear guide rail, and the telescopic end of the cylinder is fixedly connected to a forging head. A forging groove for placing the plate is formed on the forging base. An oil storage tank for storing lubricating oil is fixedly arranged on the forging frame. A sleeve is fixedly connected to the forging frame. The sleeve is slidably and sealingly sleeved on the outer surface of the telescopic end of the cylinder. An oil cavity is formed inside the sleeve. A piston is slidably and sealingly arranged inside the oil cavity. The piston is fixedly sleeved on the outer surface of the telescopic end of the cylinder. A plurality of bent pipes are fixedly inserted at the bottom of the sleeve. The plurality of bent pipes are arranged circumferentially and equidistantly. The bottom end of each bent pipe is communicated with a nozzle, and the nozzle is used for spraying oil below the forging head.

[0007] Further, oil inlet pipes are fixedly inserted on both sides of the sleeve. The oil inlet pipes are used to connect the oil storage tank and the oil cavity. A first one-way valve is arranged on the part of the oil inlet pipe inserted into the oil cavity. A plurality of groups of air holes are equidistantly arranged in a circular pattern on the top of the sleeve. The oil cavity is communicated with the external air through the air holes.

[0008] Further, the initial position of the piston is at the top of the oil cavity, and the first one-way valve is in the middle of the oil cavity.

[0009] Further, an extrusion plate group is slidably arranged on the forging groove. The extrusion plate group is used to fix the plate during plate forging. The extrusion plate group includes four groups of extrusion plate bodies that are horizontally and vertically connected. The front end of each group of extrusion plate bodies is slidably arranged on the outer surface of the previous group of extrusion plate bodies. Each group of extrusion plate bodies is provided with a long chute. A limiting slider is fixedly connected to the side wall of the outer surface of each group of extrusion plate bodies. Each group of extrusion plate bodies is slidably connected to the long chute of the adjacent extrusion plate body through the limiting slider.

[0010] Further, a first sliding tube is fixedly connected to the outer side of the outer surface of each group of extrusion plate bodies. A second sliding tube is slidably and sealingly arranged on the side of the first sliding tube away from the extrusion plate body. A telescopic cavity is arranged on the inner wall of the second sliding tube. A thrust spring is arranged in the telescopic cavity. The thrust spring is fixedly connected to the inner wall of the telescopic cavity and is fixedly connected to the first sliding tube. Straight chutes are arranged around the forging base, and straight sliders are slidably arranged in each straight chute.

[0011] Further, the top of each group of extrusion plate bodies is designed to be concave. A circular groove is arranged inside each group of extrusion plate bodies. A plurality of groups of oil holes communicating with the circular groove are arranged on each group of extrusion plate bodies. The oil holes are arranged at the concave position of the top of the extrusion plate body.

[0012] Further, the inner top of the outer surface of each group of extrusion plate bodies is inclined.

[0013] Further, the inner bottom of the outer surface of each group of extrusion plate bodies is inclined. A drain groove arranged in a rectangle is arranged at the bottom of the forging groove, and the drain groove is aligned with the inclined position at the bottom of each group of extrusion plate bodies.

[0014] Further, a second one-way valve is inserted through each group of straight chutes. A first hose is fixedly inserted at one end of each second one-way valve away from the second sliding tube. A corrugated tube is arranged inside each group of the first sliding tube and the second sliding tube, and each group of corrugated tubes is used to connect the circular groove and the second one-way valve respectively. Each group of first hoses is used to connect the second one-way valve and the oil storage tank. A second hose communicating with the drain groove is fixedly inserted on the outer surface around the forging base.

[0015] Further, the first one-way valve is used to allow the lubricating oil inside the fuel tank to enter the oil chamber, and the second one-way valve is used to allow the lubricating oil inside the second hose to enter the first hose.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By providing a cylinder, a piston and a nozzle, during the forging of the sheet by the forging head, the forging force generated by the forging head on the sheet is reduced, and the part of the sheet that needs to be forged can be timely sprayed with oil and then forged, effectively avoiding the situation that due to the over-large size of the municipal sheet, the forging time is too long, and the lubricating oil pre-applied on the surface of the sheet dries and volatilizes due to the high temperature generated during the forging of the sheet, and further, the forging head is damaged due to excessive forging force and long-term use. (2) By providing air holes and a nozzle, the effect of spraying lubricating oil is achieved. When the telescopic end of the cylinder retracts and is ready to perform the next forging action on the sheet through the forging head, the lubricating oil in the fuel tank can be sucked into the oil chamber under the action of the first one-way valve, the nozzle and the air holes, automatically filling the lubricating oil consumed in the oil chamber, making the automation degree of the whole equipment stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic front view of the overall structure of the present invention; Figure 2 is a combined schematic diagram of the cylinder, the sleeve, the forging head and the nozzle of the present invention; Figure 3 is a front sectional view of the internal structure of the sleeve of the present invention; Figure 4 is a top view of the forging base of the present invention; Figure 5 is a combined schematic diagram of the extrusion plate group of the present invention; Figure 6 is a side sectional view of the extrusion plate body of the present invention; Figure 7 is a sectional view of the internal structure of the first sleeve, the second sleeve and the straight slider of the present invention; Figure 8 is a combined schematic diagram of the oil drain groove and the second hose of the present invention; Figure 9 is a front sectional view of the internal structure of the forging base of the present invention.

[0018] Explanation of the reference numerals in the drawings: 1. Forging frame; 2. Forging base; 3. Forging groove; 4. Linear guide; 5. Cylinder; 6. Forging head; 7. Oil storage tank; 8. Sleeve; 9. Oil cavity; 10. Piston; 11. Elbow pipe; 12. Nozzle; 13. Oil inlet pipe; 14. First one-way valve; 15. Air hole; 16. Extrusion plate group; 17. Extrusion plate body; 18. Long chute; 19. Limit slider; 20. Thrust spring; 21. First sliding pipe; 22. Second sliding pipe; 23. Telescopic cavity; 24. Straight chute; 25. Straight slider; 26. Second one-way valve; 27. First hose; 28. Oil hole; 29. Round groove; 30. Oil discharge groove; 31. Second hose; 32. Bellows. Detailed implementation manners

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 9 , a forging device for municipal engineering plates, comprising a forging frame 1, a forging base 2 fixedly arranged on the forging frame 1, a linear guide 4 fixedly embedded on the forging frame 1, a cylinder 5 fixedly connected to the slider of the linear guide 4, and the telescopic end of the cylinder 5 fixedly connected to a forging head 6. A forging groove 3 for placing plates is opened on the forging base 2. An oil storage tank 7 for storing lubricating oil is fixedly arranged on the forging frame 1. A sleeve 8 is fixedly connected to the forging frame 1. The sleeve 8 is slidably and sealingly sleeved on the outer surface of the telescopic end of the cylinder 5. An oil cavity 9 is opened inside the sleeve 8. A piston 10 is slidably and sealingly arranged inside the oil cavity 9. The piston 10 is fixedly sleeved on the outer surface of the telescopic end of the cylinder 5. A plurality of groups of elbow pipes 11 are fixedly inserted at the bottom of the sleeve 8. The plurality of groups of elbow pipes 11 are arranged at equal circumferential intervals. The bottom end of each group of elbow pipes 11 is communicated with a nozzle 12. The nozzle 12 is used for spraying oil below the forging head 6.

[0021] When forging a plate, first place the plate in the forging groove 3 of the forging base 2, then operate the linear guide 4 and the cylinder 5 at the same time. The cylinder 5 operates to move the forging head 6 downward to achieve the effect of forging the plate. At the same time, with the movement of the linear guide 4, the forging head 6 can move while forging each position of the plate. When the cylinder 5 operates to extend the telescopic end, the telescopic end of the cylinder 5 will move the piston 10 downward in the oil chamber 9, and then squeeze the lubricating oil in the oil chamber 9 through the elbow 11 and the nozzle 12 to the surface of the plate below the forging head 6, so that the forging force generated by the forging head 6 on the plate is reduced during the forging process of the plate. The part of the plate to be forged can be sprayed with oil in time before forging, which effectively avoids the situation that the forging time is too long due to the large size of the municipal plate, and the lubricating oil applied on the surface of the plate in advance evaporates due to the high temperature and drying generated during the forging of the plate, and then the forging head 6 is damaged due to excessive forging pressure and long-term use, which affects the subsequent forging effect of the plate; It should be particularly noted here that the linear guide rail 4 adopts an XY linear electric slide rail, and the oil chamber 9 is long enough to satisfy the forging action of the cylinder 5 through the forging head 6.

[0022] like Figures 1 to 3 As shown, oil inlet pipes 13 are fixedly inserted on both sides of the sleeve 8. The oil inlet pipes 13 are used to connect the oil storage tank 7 and the oil chamber 9. The portion of the oil inlet pipe 13 inserted into the oil chamber 9 is provided with a first one-way valve 14. A plurality of groups of air holes 15 are equidistantly provided on the top circumference of the sleeve 8. The oil chamber 9 is connected to the external air through the air holes 15.

[0023] The first one-way valve 14 is used to allow the lubricating oil in the oil storage tank 7 to enter the oil chamber 9 .

[0024] After the cylinder 5 works to make the forging head 6 perform the forging action on the plate, at this time, the telescopic end of the cylinder 5 contracts, and then drives the piston 10 to move upward in the oil chamber 9. When the piston 10 moves upward in the oil chamber 9, first, when the horizontal position height of the piston 10 does not exceed the horizontal position height of the first one-way valve 14, at this time, the gas is inhaled into the oil chamber 9 through the nozzle 12, and at the same time, the gas is discharged through the air hole 15 to ensure the stability of the air pressure in the oil chamber 9. When the horizontal position height of the bottom of the piston 10 exceeds the horizontal position height of the first one-way valve 14, at this time, the air is inhaled into the oil chamber 9 through the nozzle 12 inside the oil chamber 9, and at the same time, the lubricating oil is inhaled into the oil chamber 9 through the first one-way valve 14. At this time, the air hole 15 still plays the role of discharging the gas in the oil chamber 9. Until the piston 10 moves to the top of the oil chamber 9, the oil storage tank 7 injects lubricating oil into the oil chamber 9 through the first one-way valve 14. When the telescopic end of the cylinder 5 extends, the effect of spraying lubricating oil can be achieved through the air hole 15 and the nozzle 12. When the telescopic end of the cylinder 5 retracts and is ready to perform the next forging action on the plate through the forging head 6, the lubricating oil in the oil storage tank 7 can be inhaled into the oil chamber 9 under the action of the first one-way valve 14, the nozzle 12 and the air hole 15, automatically filling the consumed lubricating oil in the oil chamber 9, making the automation degree of the whole equipment stronger; It should be particularly noted here that: the nozzle 12 is a water pressure nozzle 12, which can send air into the oil chamber 9 under the condition of vacuum inside the oil chamber 9.

[0025] As Figure 3 shown, the initial position of the piston 10 is at the top of the oil chamber 9, and the first one-way valve 14 is located in the middle of the oil chamber 9.

[0026] With the cooperation of the first one-way valve 14, the nozzle 12 and the air hole 15, since the first one-way valve 14 is located in the middle of the oil chamber 9, only when the horizontal position height of the bottom of the piston 10 exceeds the horizontal position height of the first one-way valve 14 can the lubricating oil be inhaled into the oil chamber 9 through the first one-way valve 14. And due to the design that the first one-way valve 14 is located in the middle of the oil chamber 9, the amount of lubricating oil inhaled into the oil chamber 9 by the piston 10 is fixed, which can ensure that the amount of lubricating oil sprayed by the nozzle 12 at the plate forging position is also fixed each time. Compared with the conventional method of using the piston 10 to inhale and discharge lubricating oil into the container, this equipment can avoid the situation that in the later stage of forging, due to the increase in the elongation amount of the cylinder 5, the amount of lubricating oil sprayed is too much, the temperature generated during forging is relatively high, and the lubricating oil catches fire and affects the surface of the plate. At the same time, it can also empty the lubricating oil in the oil chamber 9 when the cylinder 5 descends in the first half, avoiding the situation that the nozzle 12 is still spraying oil after the forging head 6 has contacted the forging surface of the plate, resulting in the residual lubricating oil on the forging head 6, and the lubricating oil drips onto the forging surface due to gravity during the next forging, affecting the forging effect.

[0027] As Figures 4 to 6and Figure 9 As shown in the figure, a pressing plate group 16 is slidably arranged on the forging groove 3. The pressing plate group 16 is used to fix the plate during plate forging. The pressing plate group 16 includes four groups of pressing plate bodies 17 that are horizontally and vertically connected. The front end of each group of pressing plate bodies 17 is slidably arranged on the outer surface of the previous group of pressing plate bodies 17. Each group of pressing plate bodies 17 is provided with a long sliding groove 18. The side wall on the outer surface of each group of pressing plate bodies 17 is fixedly connected with a limiting slider 19. Each group of pressing plate bodies 17 is slidably connected with the long sliding groove 18 of the adjacent pressing plate body 17 through the limiting slider 19.

[0028] A first sliding tube 21 is fixedly connected to the outer side of the outer surface of each group of pressing plate bodies 17. A second sliding tube 22 is slidably and sealingly arranged on the side of the first sliding tube 21 away from the pressing plate body 17. A telescopic cavity 23 is opened on the inner wall of the second sliding tube 22. A thrust spring 20 is arranged in the telescopic cavity 23. The thrust spring 20 is fixedly connected with the inner wall of the telescopic cavity 23. The thrust spring 20 is fixedly connected with the first sliding tube 21. Straight sliding grooves 24 are opened around the forging base 2. A straight slider 25 is slidably arranged in each group of straight sliding grooves 24.

[0029] When forging the plate, first place the plate between the pressing plate group 16. As the forging head 6 repeatedly forges the plate, the plate will deform and extend in all directions. At this time, in order to reduce the shaking of the plate during forging, under the extrusion action of the extended plate, the first sliding tube 21 enters the telescopic cavity 23 in the second sliding tube 22, and then squeezes the thrust spring 20 to compress the thrust spring 20. Under the action of the thrust spring 20, the four groups of pressing plate bodies 17 can better fix the plate during the forging process, avoiding the plate shaking randomly during the forging process, resulting in the forging position of the forging head 6 on the plate being chaotic, and the thickness of each position of the plate being different after forging, resulting in the unqualified quality of the plate; When forging and extending the plate, the two groups of horizontally arranged pressing plate bodies 17 will Figure 5 As shown in the figure, make a synchronous movement of one forward and the other backward. The two groups of relatively arranged vertically arranged pressing plate bodies 17 will also make a synchronous movement of one to the left and the other to the right while the plate extends. Since the moving directions of the two groups of relatively arranged pressing plate bodies 17 are opposite, the plate can always be kept at the center position of the forging groove 3, avoiding the situation that some positions are repeatedly forged when the plate is forged and extended, and ensuring the forging quality during plate forging; It should be specifically noted here that lubricating oil is applied to the positions of the forging groove 3 between the pressing plate group 16, and lubricating oil is also applied to the surface of each group of pressing plate bodies 17 for contacting the plate. At this time, the viscosity of the lubricating oil can be used to prevent the plate from shaking when the plate is forged, thereby affecting the forging effect of the plate.

[0030] such as Figures 4 to 6 andFigure 9 As shown, the top of each extrusion plate body 17 is recessed. A circular groove 29 is formed inside each extrusion plate body 17. A plurality of oil holes 28 communicating with the circular groove 29 are formed in each extrusion plate body 17. The oil holes 28 are arranged at the recessed position of the top of the extrusion plate body 17.

[0031] Since each time the forging head 6 forges the plate, it will impact the lubricating oil sprayed on the forging surface of the plate, causing the lubricating oil to flow on the surface of the plate and flow down or splash out through the side walls around the plate. The lubricating oil splashing onto the top part of the outer surface of the extrusion plate body 17 will flow along the surface of the extrusion plate body 17 into the recessed part of the top of the extrusion plate body 17 due to the recessed design of the top of the extrusion plate body 17, and then flow into the circular groove 29 through the oil holes 28 to be collected. This can prevent the lubricating oil from splashing onto various parts in the forging groove 3, resulting in excessive lubricating oil on the inner wall of the forging groove 3, causing the plate to float and the forging surface of the plate to shake during forging, leading to a poor forging effect. It can collect and save lubricating oil.

[0032] As Figures 4 to 6 and Figure 9 shown, the inner top of the outer surface of each extrusion plate body 17 is inclined.

[0033] The inner bottom of the outer surface of each extrusion plate body 17 is inclined. A rectangular drain groove 30 is formed at the bottom of the forging groove 3, and the drain groove 30 is aligned with the inclined position at the bottom of each extrusion plate body 17.

[0034] Due to the inclined part at the inner top of the extrusion plate body 17, the lubricating oil flowing down from the periphery of the outer surface of the plate can flow down through the top of the extrusion plate body 17 and be smeared on the inner wall of the extrusion plate body 17 again during the process of the plate being extended due to forging, so that the lubricating oil flowing down along the inner wall of the extrusion plate body 17 under the action of forging vibration and gravity can be replenished, avoiding the reduction of lubricating oil on the inner wall of the extrusion plate body 17 and the situation of the plate shaking during forging; And since the drain groove 30 is aligned with the inclined position at the bottom of each extrusion plate body 17, when lubricating oil is smeared on the bottom wall of the forging groove 3, even if too much lubricating oil is smeared, at the beginning of forging the plate, the excess lubricating oil can be drained through the drain groove 30, further ensuring the fixation of the plate and the forging effect; Meanwhile, due to the inclined part at the inner bottom of the extrusion plate body 17, the lubricating oil flowing down through the inner wall of the extrusion plate body 17 will accumulate between the extrusion plate body 17 and the bottom of the plate. When the plate is extended due to forging, the extrusion plate body 17 will move towards the inner wall of the forging groove 3, and then the lubricating oil accumulated between the extrusion plate body 17 and the bottom of the plate will be evenly smeared on the bottom wall of the forging groove 3, so that there is always sufficient lubricating oil at the bottom of the plate to enhance the stability of the plate during forging, further ensuring the forging quality of the plate.

[0035] As Figure 1 , Figure 4 , Figure 8 and Figure 9 shown, each group of straight chutes 24 is penetrated and inserted with a second one-way valve 26, and one end of each group of second one-way valves 26 away from the second sliding tube 22 is fixedly inserted with a first hose 27. A corrugated tube 32 is arranged inside each group of first sliding tubes 21 and second sliding tubes 22, and each group of corrugated tubes 32 is respectively used to connect the circular groove 29 and the second one-way valve 26. Each group of first hoses 27 is used to connect the second one-way valve 26 and the oil storage tank 7. A second hose 31 communicating with the oil discharge groove 30 is fixedly inserted around the outer surface of the forging base 2. The second one-way valve 26 is used to make the lubricating oil in the second hose 31 enter the first hose 27.

[0036] When the plate is forged and extended, each group of extrusion plate bodies 17 moves towards the inner wall of the forging groove 3, so that the first hose 27 enters the telescopic cavity 23 of the second hose 31, thereby causing the corrugated tube 32 to contract. Subsequently, the flowing lubricating oil ejected through the oil hole 28 can reduce the situation that the oil hole 28 is blocked due to the drying and hardening of the lubricating oil in the sunken part of the extrusion plate body 17 after being placed for a long time, achieving the purpose of dredging the oil hole 28 and ensuring that the lubricating oil can normally enter the circular groove 29 through the oil hole 28; When the forging of the plate is completed and the plate between the extrusion plate groups 16 is taken out, due to the absence of the extrusion action of the plate, under the action of the thrust spring 20 in the compressed state, the entire extrusion plate group 16 will quickly reset, thereby causing the corrugated tube 32 to elongate. The corrugated tube 32 will inhale. Since the second one-way valve 26 is used to make the lubricating oil in the second hose 31 enter the first hose 27, at this time, the lubricating oil in the circular groove 29 and the sunken part of the extrusion plate body 17 can enter the inside of the corrugated tube 32 and be recycled to the oil storage tank 7 through the pumping equipment, realizing the recycling of the lubricating oil and reducing the production cost of the plate; It should be specifically noted here that: both the first hose 27 and the second hose 31 need to use pumping equipment to send the lubricating oil into the oil storage tank 7.

[0037] Usage method: When forging a sheet, first place the sheet in the forging groove 3 of the forging base 2. Subsequently, make the linear guide rail 4 and the cylinder 5 work simultaneously. The work of the cylinder 5 causes the forging head 6 to move downward, thereby achieving the effect of forging the sheet. At the same time, in cooperation with the movement of the linear guide rail 4, the forging head 6 can move while forging each position of the sheet. When the telescopic end of the cylinder 5 extends during its work, the telescopic end of the cylinder 5 will drive the piston 10 to move downward in the oil chamber 9, and then squeeze the lubricating oil in the oil chamber 9 through the elbow 11 and the nozzle 12 onto the surface of the sheet below the forging head 6. During the process of forging the sheet by the forging head 6, the forging force generated by the forging head 6 on the sheet is reduced, and the purpose of timely spraying oil on the part of the sheet that needs to be forged and then forging can be achieved. It effectively avoids the situation that due to the over-large size of the municipal sheet, the forging time is too long, and the lubricating oil pre-applied on the surface of the sheet dries and volatilizes, resulting in damage to the forging head 6 due to excessive forging force during long-term use, affecting the subsequent forging effect of the sheet.

[0038] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A forging device for municipal engineering plates, comprising a forging frame (1), a forging base (2) fixedly arranged on the forging frame (1), a linear guide rail (4) fixedly embedded on the forging frame (1), a cylinder (5) fixedly connected to the slider of the linear guide rail (4), and the telescopic end of the cylinder (5) fixedly connected to a forging head (6), characterized in that: The forging base (2) is provided with a forging groove (3) for placing a plate, and an oil storage tank (7) for storing lubricating oil is fixedly arranged on the forging frame (1); A sleeve (8) is fixedly connected to the forging frame (1), the sleeve (8) is slidably and sealingly sleeved on the outer surface of the telescopic end of the cylinder (5), an oil chamber (9) is formed inside the sleeve (8), a piston (10) is slidably and sealingly arranged inside the oil chamber (9), the piston (10) is fixedly sleeved on the outer surface of the telescopic end of the cylinder (5), a plurality of groups of bent pipes (11) are fixedly inserted at the bottom of the sleeve (8), the plurality of groups of bent pipes (11) are arranged at equal circumferential intervals, and the bottom end of each group of bent pipes (11) is communicated with a nozzle (12), and the nozzle (12) is used for spraying oil below the forging head (6).

2. The forging equipment for municipal engineering plates according to claim 1, characterized in that: Inlet pipes (13) are fixedly inserted on both sides of the sleeve (8), the inlet pipes (13) are used for communicating the oil storage tank (7) and the oil chamber (9), a first one-way valve (14) is arranged on the part of the inlet pipe (13) inserted into the oil chamber (9), a plurality of groups of air holes (15) are circumferentially and equally spaced on the top of the sleeve (8), and the oil chamber (9) is communicated with the external air through the air holes (15).

3. A forging device for municipal engineering plates according to claim 2, characterized in that: The initial position of the piston (10) is at the top of the oil chamber (9), and the first one-way valve (14) is in the middle of the oil chamber (9).

4. A forging device for municipal engineering plates according to claim 3, characterized in that: An extrusion plate group (16) is slidably arranged on the forging groove (3), and the extrusion plate group (16) is used for fixing the plate during plate forging. The extrusion plate group (16) includes four groups of extrusion plate bodies (17) connected horizontally and vertically. The front end of each group of extrusion plate bodies (17) is slidably arranged on the outer surface of the previous group of extrusion plate bodies (17). Each group of extrusion plate bodies (17) is provided with a long sliding groove (18). A limiting sliding block (19) is fixedly connected to the side wall of the outer surface of each group of extrusion plate bodies (17). Each group of extrusion plate bodies (17) is slidably connected to the long sliding groove (18) of the adjacent extrusion plate body (17) through the limiting sliding block (19).

5. A forging device for municipal engineering plates according to claim 4, characterized in that: A first sliding pipe (21) is fixedly connected to the outer side of the outer surface of each group of extrusion plate bodies (17). A second sliding pipe (22) is slidably and sealingly arranged on the side of the first sliding pipe (21) away from the extrusion plate body (17). A telescopic cavity (23) is formed in the inner wall of the second sliding pipe (22). A thrust spring (20) is arranged in the telescopic cavity (23). The thrust spring (20) is fixedly connected to the inner wall of the telescopic cavity (23). The thrust spring (20) is fixedly connected to the first sliding pipe (21). Straight sliding grooves (24) are formed around the forging base (2). A straight sliding block (25) is slidably arranged in each group of straight sliding grooves (24).

6. The forging equipment for municipal engineering plates according to claim 5, characterized in that: The top of each group of extrusion plate bodies (17) is designed to be concave. A circular groove (29) is formed inside each group of extrusion plate bodies (17). A plurality of groups of oil holes (28) communicated with the circular groove (29) are formed in each group of extrusion plate bodies (17). The oil holes (28) are arranged at the concave position of the top of the extrusion plate body (17).

7. A forging device for municipal engineering plates according to claim 6, characterized in that: The inner top of the outer surface of each extrusion plate body (17) is inclined.

8. A forging device for municipal engineering plates according to claim 7, characterized in that: The inner bottom of the outer surface of each extrusion plate body (17) is inclined. A rectangular oil drain groove (30) is formed at the bottom of the forging groove (3), and the oil drain groove (30) is aligned with the inclined position at the bottom of each extrusion plate body (17).

9. A forging device for municipal engineering plates according to claim 8, characterized in that: A second one-way valve (26) is inserted through each straight chute (24). One end of each second one-way valve (26) away from the second sliding tube (22) is fixedly inserted with a first hose (27). A corrugated tube (32) is arranged inside each first sliding tube (21) and the second sliding tube (22), and each corrugated tube (32) is respectively used to connect the circular groove (29) and the second one-way valve (26). Each first hose (27) is used to connect the second one-way valve (26) and the oil storage tank (7). Second hoses (31) communicated with the oil drain groove (30) are fixedly inserted around the outer surface of the forging base (2).

10. A forging device for municipal engineering plates according to claim 9, characterized in that: The first one-way valve (14) is used to allow the lubricating oil inside the oil storage tank (7) to enter the oil cavity (9), and the second one-way valve (26) is used to allow the lubricating oil inside the second hose (31) to enter the first hose (27).

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