CN211027929U - Hydraulic press for forging mechanical parts - Google Patents

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to a hydraulic machine for forging mechanical parts, which can effectively prevent the high-temperature damage of the high-temperature fluid in the hydraulic cylinder to the hydraulic cylinder by cooling the hydraulic cylinder, prevent the high temperature from influencing the strength of the hydraulic cylinder, prolong the service life of the hydraulic cylinder, and simultaneously effectively prevent the hydraulic cylinder in the high-temperature state from scalding maintenance workers, thus improving the safety and the practicability; the hydraulic lifting device comprises a base, a supporting frame, a hydraulic station, a hydraulic pipe, a hydraulic cylinder and a hydraulic rod, wherein the left side and the right side of the bottom end of the supporting frame are respectively installed on the left side and the right side of the top end of the base; the device also comprises a cooling bin, two groups of mounting seats, a first conduit, an air pump, a second conduit, a third conduit, a three-way pipe, a pressure regulating valve and a cooling pipe.

Description

Hydraulic press for forging mechanical parts

Technical Field

The utility model relates to a mechanical equipment's technical field especially relates to machine part forges and uses hydraulic press.

Background

As is well known, a hydraulic press for forging a machine part is an auxiliary device for press forging a machine part, and is widely used in the field of mechanical equipment; the existing hydraulic machine for forging mechanical parts comprises a base, a support frame, a hydraulic station, a hydraulic pipe, a hydraulic cylinder and a hydraulic rod, wherein the left side and the right side of the bottom end of the support frame are respectively installed on the left side and the right side of the top end of the base; when the existing hydraulic press for forging mechanical parts is used, a hydraulic station is firstly opened, oil is supplied or pumped into the hydraulic cylinder by the hydraulic station through a hydraulic pipe, and the hydraulic cylinder pushes a hydraulic rod to move up and down, so that the upward movement and the downward movement of the hydraulic press are realized; present machine part forges uses the hydraulic press in using the discovery, the inside fluid of pneumatic cylinder is in high-pressure state for a long time, the temperature of fluid is higher, the fluid of high-temperature state is with heat transfer to pneumatic cylinder on, lead to the pneumatic cylinder temperature to rise easily, the pneumatic cylinder inner structure changes easily under high-temperature state, lead to pneumatic cylinder intensity to reduce, after the hydraulic press uses for a long time, the pneumatic cylinder takes place to damage easily, equipment life reduces, the pneumatic cylinder of high-temperature state causes the scald to the maintenance workman easily simultaneously, lead to security and practicality relatively poor.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model provides a through carrying out cooling treatment to the pneumatic cylinder, can prevent effectively that the fluid of the inside high temperature state of pneumatic cylinder from causing high temperature to destroy to the pneumatic cylinder, prevent that the high temperature from causing the influence to the intensity of pneumatic cylinder, improve pneumatic cylinder life, effectively prevent simultaneously that the pneumatic cylinder of high temperature state from causing the scald to the maintenance workman, improve the mechanical parts hydraulic press for forging of security and practicality.

The utility model discloses a hydraulic press is used in machine part forging, the on-line screen storage device comprises a base, a supporting rack, the hydraulic pressure station, the hydraulic pressure pipe, pneumatic cylinder and hydraulic stem, install respectively on the top left side and the right side of base on the bottom left side and the right side of support frame, the hydraulic pressure station is located the left of support frame, the bottom at hydraulic pressure station is installed on the top left side of base, the top of hydraulic pressure station is communicated with the bottom of hydraulic stem, the bottom outside of pneumatic cylinder is installed in the top middle part of support frame, the right-hand member of hydraulic stem is installed in the top middle part of pneumatic cylinder and is communicated with the pneumatic cylinder is inside, the top of hydraulic stem passes the bottom middle part of pneumatic cylinder and stretches into to the pneumatic cylinder inside, the bottom of hydraulic stem; the bottom of the cooling bin is arranged on the left side of the top end of the support frame, a first cavity is arranged inside the cooling bin, the outer ends of the two groups of mounting seats are respectively arranged on the right side of the top end and the right side of the bottom end of the first cavity, a plurality of groups of cooling rods are longitudinally and uniformly arranged at the inner ends of the two groups of mounting seats side by side, the lower side output end of the first guide tube is communicated with the middle part of the left end of the first cavity, the bottom end of the air pump is arranged on the left side of the top end of the cooling bin, the left side output end of the air pump is communicated with the upper side input end of the first guide tube, the upper side input end of the air pump is communicated with the lower side output end of the second guide tube, the right side input end of the second guide tube is communicated with a filtering device, the bottom end of the filtering device is arranged on, the right end of the filtering device is communicated with the left output end of a third guide pipe, the right input end of the third guide pipe is communicated with the lower output end of a three-way pipe, a pressure regulating valve is installed on the right input end of the three-way pipe and is communicated with the interior of the three-way pipe, a cooling pipe is wound on the outer side of a hydraulic cylinder, the right output end of the cooling pipe is communicated with the upper input end of the three-way pipe, four groups of fixing frames are uniformly arranged on the outer wall of the cooling pipe, the inner ends of the four groups of fixing frames are installed on the outer wall of the hydraulic cylinder, the left input end of the cooling pipe is communicated; opening an air pump, sucking external air by the air pump through a second conduit, a filtering device, a third conduit, a right input end of a three-way pipe and a pressure regulating valve, discharging the air into a cooling bin through a first conduit, opening a plurality of groups of cooling rods, cooling the air in the cooling bin by the groups of cooling rods to form cold air, cooling the air discharged into the cooling bin by the first conduit through the groups of cooling rods, discharging the air into a cooling pipe through a fourth conduit, cooling the hydraulic cylinder by the cold air in the cooling pipe through the outer wall of the cooling pipe to reduce the temperature of the hydraulic cylinder, discharging the cold air in the cooling pipe into the three-way pipe, and returning the cold air into the filtering device through the third conduit, thereby recycling the cold air, saving energy, when the air pressure in the three-way pipe is small, pushing the external air pressure regulating valve and entering the three-way pipe to supplement the air in the three-way, when the intraductal gas pressure of tee bend is great, the right side input of accessible three-way pipe and air-vent valve discharge to the external world, adjust the intraductal circulation gas pressure value of adjustable tee bend of air-vent valve, four group's mounts can support and fix the cooling tube, through carrying out cooling treatment to the pneumatic cylinder, can prevent effectively that the fluid of the inside high temperature state of pneumatic cylinder from causing high temperature to destroy to the pneumatic cylinder, prevent that the high temperature from causing the influence to the intensity of pneumatic cylinder, conveniently protect the pneumatic cylinder, pneumatic cylinder life is prolonged, conveniently make the pneumatic cylinder keep carrying out work under the condition of normal atmospheric temperature, the pneumatic cylinder that effectively prevents simultaneously high temperature state causes the scald to the maintenance workman, the convenience is protected the human body, safety.

The utility model discloses a hydraulic press is used in machine part forging, still include air guide sleeve, first mounting bracket, air guide shaft, four first flabellums of group and four second flabellums of group, air guide sleeve transversely installs at first cavity left end middle part, the downside output of first pipe communicates with air guide sleeve inside, the top and the bottom of first mounting bracket are all installed on air guide sleeve's inner wall, the right-hand member of first mounting bracket and air guide shaft's left end rotatable coupling, air guide shaft's right-hand member stretches out to air guide sleeve's right-hand, four first flabellums of group all are located air guide sleeve's inside right side, the inner of four first flabellums of group is evenly installed in air guide shaft's outer wall left side, four second flabellums of group all are located air guide sleeve's right-hand, four second flabellums of group's inner is evenly installed on; air exhausted from the output end of the lower side of the first guide pipe enters the air guide sleeve and pushes the four groups of first fan blades to rotate, the four groups of first fan blades drive the air guide shaft and the four groups of second fan blades to rotate, air in the air guide sleeve is discharged into the first cavity through the right end of the air guide sleeve, the four groups of second fan blades in a rotating state stir air in the first cavity to rotate and flow rightwards, the air is fully contacted with the multiple groups of cooling rods, the first mounting frame supports and fixes the air guide shaft, and the air in the cooling bin can be conveniently stirred to rotate and flow by arranging the air guide sleeve, the first mounting frame, the air guide shaft, the four groups of first fan blades and the four groups of second fan blades, so that the air is fully contacted with the multiple groups of cooling rods, the air cooling speed is improved, the cold air cooling efficiency is improved, and the.

The utility model discloses a hydraulic press is used in machine part forging, filter equipment include filter bin and filter plate, the bottom of filter bin is installed on the top right side of base, the inside of filter bin is provided with the second cavity, the right side input of second pipe and the upper side of the left end of second cavity communicate, the left side output of third pipe and the upper side of the right-hand member of second cavity communicate, the filter plate is vertically installed on the inner wall of second cavity; the inside right side of filter storehouse is crossed to the inside air admission of third pipe, crosses the inside left side of filter storehouse of filter plate entering filter storehouse, and the filter plate filters the interception to the impurity in the air and handles, and inside the inside left air admission second pipe in filter storehouse, through setting up filter equipment, can conveniently carry out filtration treatment to external inspiratory air, effectively prevents that the impurity in the air from causing the jam and destruction to equipment, improves the practicality.

The hydraulic press for forging mechanical parts of the utility model also comprises a discharge plate, the lower side of the right end of the second cavity is communicated with a discharge hole, and the left end cover of the discharge plate is arranged at the right end of the discharge hole; the impurity deposit of filter plate right-hand member interception is on second cavity bottom right side, opens the discharge bar, can conveniently unify the clearance through the bin outlet to the sedimentary impurity in second cavity bottom right side, improves the practicality.

The utility model discloses a hydraulic press is used in machine part forging still includes the access panel, and second cavity top intercommunication is provided with the access hole, and the bottom lid dress of access panel is at the top of access hole; open the access panel, can conveniently inspect and maintain the interior device of filter bin through the access hole, conveniently clear up the absorptive impurity of filter plate right-hand member simultaneously, improve the gas permeability of filter plate, improve practicality and reliability.

The utility model discloses a hydraulic press is used in machine part forging still includes the second mounting bracket, the upside of second mounting bracket and the right side outer wall rotatable coupling of air guide shaft, the bottom of second mounting bracket is installed in first cavity bottom; through setting up the second mounting bracket, can conveniently support and fix the air guide shaft, stability when improving its rotation improves the practicality.

The hydraulic press for forging mechanical parts further comprises a drain pipe, wherein the right side input end of the drain pipe is communicated with the lower side of the left end of the first cavity, and the lower side output end of the drain pipe is communicated with a drain valve; the inside temperature of cooling bin is lower, and the moisture in the air condenses into the water droplet easily, and the drain valve is opened in first cavity bottom to the water droplet deposit, and the sedimentary water accessible drain pipe of first cavity bottom discharges to the external world to the convenience is cleared up the water in the cooling bin, improves the practicality.

The hydraulic machine for forging mechanical parts further comprises a heat shield, the heat shield is positioned outside the hydraulic cylinder, the outer side of the bottom end of the heat shield is installed at the top end of the support frame, and the hydraulic pipe, the right side output end of the cooling pipe and the left side input end of the cooling pipe respectively penetrate through the top end, the left end and the right end of the heat shield; through setting up thermal shroud, can conveniently keep warm to the pneumatic cylinder and handle, prevent that the cold air around the pneumatic cylinder from diffusing to the ambient air in, it is extravagant to reduce the energy, conveniently protects the pneumatic cylinder simultaneously, prevents that external object from causing its destruction, improves practicality and reliability.

Compared with the prior art, the beneficial effects of the utility model are that: opening an air pump, sucking external air by the air pump through a second conduit, a filtering device, a third conduit, a right input end of a three-way pipe and a pressure regulating valve, discharging the air into a cooling bin through a first conduit, opening a plurality of groups of cooling rods, cooling the air in the cooling bin by the groups of cooling rods to form cold air, cooling the air discharged into the cooling bin by the first conduit through the groups of cooling rods, discharging the air into a cooling pipe through a fourth conduit, cooling the hydraulic cylinder by the cold air in the cooling pipe through the outer wall of the cooling pipe to reduce the temperature of the hydraulic cylinder, discharging the cold air in the cooling pipe into the three-way pipe, and returning the cold air into the filtering device through the third conduit, thereby recycling the cold air, saving energy, when the air pressure in the three-way pipe is small, pushing the external air pressure regulating valve and entering the three-way pipe to supplement the air in the three-way, when the intraductal gas pressure of tee bend is great, the right side input of accessible three-way pipe and air-vent valve discharge to the external world, adjust the intraductal circulation gas pressure value of adjustable tee bend of air-vent valve, four group's mounts can support and fix the cooling tube, through carrying out cooling treatment to the pneumatic cylinder, can prevent effectively that the fluid of the inside high temperature state of pneumatic cylinder from causing high temperature to destroy to the pneumatic cylinder, prevent that the high temperature from causing the influence to the intensity of pneumatic cylinder, conveniently protect the pneumatic cylinder, pneumatic cylinder life is prolonged, conveniently make the pneumatic cylinder keep carrying out work under the condition of normal atmospheric temperature, the pneumatic cylinder that effectively prevents simultaneously high temperature state causes the scald to the maintenance workman, the convenience is protected the human body, safety.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged schematic view of the cooling chamber of FIG. 1;

FIG. 3 is an enlarged schematic view of the filter cartridge of FIG. 1;

FIG. 4 is an enlarged schematic view of the tee in FIG. 1;

in the drawings, the reference numbers: 1. a base; 2. a support frame; 3. a hydraulic station; 4. a hydraulic tube; 5. a hydraulic cylinder; 6. a hydraulic lever; 7. a cooling bin; 8. a mounting seat; 9. a cooling bar; 10. a first conduit; 11. an air pump; 12. a second conduit; 13. a third conduit; 14. a three-way pipe; 15. a pressure regulating valve; 16. a cooling tube; 17. a fixed mount; 18. a fourth conduit; 19. a gas guide sleeve; 20. a first mounting bracket; 21. an air guide shaft; 22. a first fan blade; 23. a second fan blade; 24. a filtering bin; 25. filtering the plate; 26. a discharge plate; 27. an access panel; 28. a second mounting bracket; 29. a drain pipe; 30. a heat shield.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, the utility model discloses a hydraulic press is used in mechanical parts forging, it is at the during operation, at first open hydraulic pressure station 3, hydraulic pressure station 3 carries out fuel feeding or oil pumping to pneumatic cylinder 5 inside through hydraulic pressure pipe 4, pneumatic cylinder 5 promotes hydraulic stem 6 and reciprocates, thereby realize the hydraulic press and shift up and push down the motion, the pressure of the inside fluid of pneumatic cylinder 5 is great, the fluid temperature is higher, lead to pneumatic cylinder 5 temperature higher, need to carry out cooling treatment to pneumatic cylinder 5, open air pump 11, air pump 11 passes through second pipe 12, and a filter equipment, third pipe 13, the right side input of three-way pipe 14 and air-vent valve 15 inhale the outside air and discharge into inside cooling bin 7 through first pipe 10, open multiunit cooling rod 9, multiunit cooling rod 9 carries out cooling treatment and forms the cold air to cooling bin 7 inside air, the air that first pipe 10 discharged into cooling bin 7 is through the cooling rod 9 cooling and discharges into cooling tube 16 through fourth pipe 18 through the cooling rod of multi The cold air in the cooling pipe 16 is cooled and cooled by the outer wall of the cooling pipe 16, so that the temperature of the hydraulic cylinder 5 is reduced, the cold air in the cooling pipe 16 is discharged into the three-way pipe 14 and flows back into the filtering device through the third guide pipe 13, so that the cold air is recycled, energy is saved, when the air pressure in the three-way pipe 14 is low, the outside air pushes the pressure regulating valve 15 away and enters the three-way pipe 14, so that the air in the three-way pipe 14 is supplemented, when the air pressure in the three-way pipe 14 is high, the cold air can be discharged to the outside through the right input end of the three-way pipe 14 and the pressure regulating valve 15, the pressure value of the circulating gas in the three-way pipe 14 can be regulated by the pressure regulating valve 15, and the four groups of fixing frames 17 can support and fix the cooling.

The utility model discloses the main function who realizes does: by cooling the hydraulic cylinder, the hydraulic cylinder can be effectively prevented from being damaged by high temperature oil in a high-temperature state in the hydraulic cylinder, the influence of the high temperature on the strength of the hydraulic cylinder is prevented, the hydraulic cylinder is conveniently protected, the service life of the hydraulic cylinder is prolonged, the hydraulic cylinder can conveniently work under a normal temperature condition, meanwhile, the hydraulic cylinder in the high-temperature state is effectively prevented from scalding maintenance workers, and the human body is conveniently protected; the air discharged from the output end at the lower side of the first guide pipe enters the air guide sleeve and pushes the four groups of first fan blades to rotate, the four groups of first fan blades drive the air guide shaft and the four groups of second fan blades to rotate, the air in the air guide sleeve is discharged into the first cavity through the right end of the air guide sleeve, the four groups of second fan blades in a rotating state stir the air in the first cavity to rotate and flow rightwards, the air is fully contacted with the multiple groups of cooling rods, the first mounting frame supports and fixes the air guide shaft, and the air guide sleeve, the first mounting frame, the air guide shaft, the four groups of first fan blades and the four groups of second fan blades can conveniently stir the air in the cooling bin to rotate and flow, so that the air is fully contacted with the multiple groups of cooling rods, the air cooling speed is improved, and the cooling efficiency; air in the third guide pipe enters the right side in the filtering bin, the air on the right side in the filtering bin passes through the filter plate and enters the left side in the filtering bin, impurities in the air are filtered and intercepted by the filter plate, the air on the left side in the filtering bin enters the second guide pipe, and the air sucked from the outside can be conveniently filtered by arranging the filtering device, so that the equipment is effectively prevented from being blocked and damaged by the impurities in the air; impurities intercepted at the right end of the filter plate are deposited on the right side of the bottom end of the second cavity, and the discharge plate is opened, so that the impurities deposited on the right side of the bottom end of the second cavity can be conveniently cleaned in a unified manner through the discharge port; the access plate is opened, so that the internal device of the filter bin can be conveniently inspected and maintained through the access hole, and meanwhile, impurities adsorbed at the right end of the filter plate can be conveniently cleaned, and the air permeability of the filter plate is improved; the second mounting frame is arranged, so that the air guide shaft can be conveniently supported and fixed, and the stability of the air guide shaft during rotation is improved; the temperature in the cooling bin is low, moisture in the air is easy to condense into water drops, the water drops are deposited at the bottom end of the first cavity, the drain valve is opened, and the water deposited at the bottom end of the first cavity can be discharged to the outside through the drain pipe, so that the water in the cooling bin is convenient to clean; through setting up thermal shroud, can conveniently keep warm to the pneumatic cylinder and handle, prevent that the cold air around the pneumatic cylinder from diffusing to the ambient air in, it is extravagant to reduce the energy, conveniently protects the pneumatic cylinder simultaneously, prevents that external object from causing its destruction, improves practicality and reliability.

The hydraulic machine for forging the mechanical parts of the utility model adopts a common mechanical mode, such as an installation mode, a connection mode or a setting mode, and can be implemented as long as beneficial effects can be achieved; hydraulic stations, hydraulic cylinders and cooling sticks are commercially available.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. Hydraulic press for forging mechanical parts, which comprises a base (1), a support frame (2), a hydraulic station (3), a hydraulic pipe (4), a hydraulic cylinder (5) and a hydraulic rod (6), wherein the left side and the right side of the bottom end of the support frame (2) are respectively arranged on the left side and the right side of the top end of the base (1), the hydraulic station (3) is positioned on the left side of the support frame (2), the bottom end of the hydraulic station (3) is arranged on the left side of the top end of the base (1), the top end of the hydraulic station (3) is communicated with the bottom end of the hydraulic pipe (4), the outer side of the bottom end of the hydraulic cylinder (5) is arranged in the middle of the top end of the support frame (2), the right end of the hydraulic pipe (4) is arranged in the middle of the top end of the hydraulic cylinder (5) and is communicated with the inside of the hydraulic cylinder (5), the top end of the hydraulic rod (6) penetrates through the middle of the top end of the support, the hydraulic rod (6) is connected with the support frame (2) in a sliding way; the device is characterized by further comprising a cooling bin (7), two groups of mounting seats (8), a first conduit (10), an air pump (11), a second conduit (12), a third conduit (13), a three-way pipe (14), a pressure regulating valve (15) and a cooling pipe (16), wherein the bottom end of the cooling bin (7) is arranged on the left side of the top end of the support frame (2), a first cavity is arranged inside the cooling bin (7), the outer ends of the two groups of mounting seats (8) are respectively arranged on the right side of the top end and the right side of the bottom end of the first cavity, a plurality of groups of cooling rods (9) are longitudinally and uniformly arranged at the inner ends of the two groups of mounting seats (8) side by side, the lower side output end of the first conduit (10) is communicated with the middle part of the left end of the first cavity, the bottom end of the air pump (11) is arranged on the left side of the top end of the cooling bin (7), the left side output end of the air pump (11, the right side input end of the second conduit (12) is communicated with a filtering device, the bottom end of the filtering device is arranged on the right side of the top end of the cooling bin (7), the third conduit (13) is positioned behind the hydraulic cylinder (5), the right end of the filtering device is communicated with the left side output end of the third conduit (13), the right side input end of the third conduit (13) is communicated with the lower side output end of the three-way pipe (14), a pressure regulating valve (15) is arranged on the right side input end of the three-way pipe (14) and is communicated with the inside of the three-way pipe, the cooling pipe (16) is wound on the outer side of the hydraulic cylinder (5), the right side output end of the cooling pipe (16) is communicated with the upper side input end of the three-way pipe (14), four groups of fixing frames (17) are uniformly arranged on the outer wall of the cooling pipe (16), the inner ends of the four groups of fixing frames (17), the left input end of the fourth conduit (18) is communicated with the lower side of the right end of the first cavity.

2. The hydraulic press for forging mechanical parts, as recited in claim 1, further comprising an air guide sleeve (19), a first mounting frame (20), an air guide shaft (21), four sets of first fan blades (22) and four sets of second fan blades (23), wherein the air guide sleeve (19) is transversely installed in the middle of the left end of the first cavity, the lower output end of the first conduit (10) is communicated with the inside of the air guide sleeve (19), the top end and the bottom end of the first mounting frame (20) are both installed on the inner wall of the air guide sleeve (19), the right end of the first mounting frame (20) is rotatably connected with the left end of the air guide shaft (21), the right end of the air guide shaft (21) extends to the right of the air guide sleeve (19), the four sets of first fan blades (22) are all located on the right side of the inside of the air guide sleeve (19), the inner ends of the four sets of first fan blades (22) are uniformly installed on the left side of the outer wall of the air guide shaft (21), and the four sets of second fan blades (23) are, the inner ends of the four groups of second fan blades (23) are uniformly arranged on the right side of the outer wall of the air guide shaft (21).

3. The hydraulic press for forging mechanical parts as claimed in claim 2, wherein the filtering device comprises a filtering bin (24) and a filtering plate (25), the bottom end of the filtering bin (24) is mounted on the right side of the top end of the base (1), a second cavity is arranged inside the filtering bin (24), the right input end of the second conduit (12) is communicated with the upper side of the left end of the second cavity, the left output end of the third conduit (13) is communicated with the upper side of the right end of the second cavity, and the filtering plate (25) is vertically mounted on the inner wall of the second cavity.

4. The hydraulic press for forging mechanical parts as recited in claim 3, further comprising a discharge plate (26), wherein a discharge opening is provided in communication with a lower side of a right end of the second chamber, and a left end cover of the discharge plate (26) is attached to a right end of the discharge opening.

5. The hydraulic machine for forging mechanical parts as recited in claim 4, further comprising an access panel (27), wherein the top end of the second cavity is provided with an access opening, and the bottom end of the access panel (27) is covered on the top end of the access opening.

6. The hydraulic machine for forging machine parts according to claim 5, further comprising a second mounting bracket (28), wherein an upper side of the second mounting bracket (28) is rotatably connected to an outer wall of a right side of the air guide shaft (21), and a bottom end of the second mounting bracket (28) is mounted to a bottom end of the first cavity.

7. The hydraulic press for forging mechanical parts as recited in claim 6, further comprising a drain pipe (29), wherein a right input end of the drain pipe (29) is communicated with a lower side of the left end of the first cavity, and a lower output end of the drain pipe (29) is communicated with a drain valve.

8. The hydraulic machine for forging mechanical parts as claimed in claim 7, further comprising a heat shield (30), wherein the heat shield (30) is located outside the hydraulic cylinder (5), the outside of the bottom end of the heat shield (30) is mounted at the top end of the support frame (2), and the hydraulic pipe (4), the right output end of the cooling pipe (16) and the left input end of the cooling pipe (16) respectively penetrate through the top end, the left end and the right end of the heat shield (30).

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