CN211965788U

CN211965788U - Railway substrate forging die

Info

Publication number: CN211965788U
Application number: CN202020330726.2U
Authority: CN
Inventors: 潘爱琼; 张辉; 付加林
Original assignee: Zhengzhou University of Science and Technology
Current assignee: Zhengzhou University of Science and Technology
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-11-20
Anticipated expiration: 2030-03-17

Abstract

The utility model relates to a railway substrate forging die, which effectively solves the problem of low efficiency caused by the difficult demoulding of the prior railway substrate during forging; the technical scheme comprises the following steps: the supporting plate is fixedly installed on the base, the lower end face of the die cavity is provided with an opening at the lower end, the supporting plate is installed on the lower end face of the die cavity in a vertical sliding fit mode, the supporting plate is located on the base below the supporting plate and is transversely arranged at intervals, the supporting device is connected with the driving plate through the telescopic spring, the driving plate is driven by the driving device, when a railway base plate blank is forged, the railway base plate blank can be quickly taken out of the die cavity, the whole process is light, the S-shaped water pipe is arranged in the die cavity, after forging and demolding of the railway base plate blank are completed, an external water source is sent into the S-shaped water pipe and is outwards discharged from the bottom of the S-shaped water pipe, and therefore the die body can be.

Description

Railway substrate forging die

Technical Field

The utility model relates to a forge mould technical field, specifically be a railway substrate forges mould.

Background

Forging is a processing method which utilizes forging machinery to apply pressure on a metal blank to enable the metal blank to generate plastic deformation so as to obtain a forging with certain mechanical property, certain shape and certain size, one of two major components of forging (forging and stamping) can eliminate the defects of casting-state looseness and the like generated in the smelting process of metal through forging, the microstructure is optimized, meanwhile, because a complete metal streamline is preserved, the mechanical property of the forging is generally superior to that of a casting made of the same material, important parts with high load and severe working conditions in related machinery are mainly used, and except for a plate, a section or a welding part which has a simpler shape and can be rolled, the forging is mostly adopted;

at present, after the existing die for forging the railway substrate completes the forging work of the substrate, the demoulding is laborious, the knocking device is generally needed to knock and vibrate the die, so that the railway substrate blank and the die are separated, the die body is easily damaged after a long time, the railway substrate positioned in the die is difficult to be quickly taken out of the die, the time required by demoulding is further increased, the goods output of the railway substrate is indirectly prolonged, the production efficiency of the whole production line is low, and the maximization of the factory benefit is not facilitated;

in view of the above, we provide a railway baseplate forging die for solving the above problems.

SUMMERY OF THE UTILITY MODEL

To the circumstances, for overcoming prior art's defect, the utility model relates to a railway substrate forges mould, this railway substrate forges mould can be fast with accomplishing the railway substrate blank after forging and take out in the mould cavity to whole process is comparatively light, need not to beat, vibrations to the mould body, has further protected the mould body, makes its life greatly increased.

A railway base plate forging die comprises a base and is characterized in that a die cavity with an opening at the lower end is fixedly arranged on the base, a bearing plate is vertically and slidably arranged on the lower end face of the die cavity in a matched mode, two groups of supporting devices are transversely arranged on the base below the bearing plate at intervals, the supporting devices are longitudinally and slidably arranged on the base and are connected with a transmission plate longitudinally and slidably arranged on the base through telescopic springs, the transmission plate is connected with a driving device arranged on the base, two transverse sides of the bearing plate are respectively connected with a steel wire rope, the steel wire rope is connected with a transmission device through a pulley block, the transmission device is driven by a driving device, when the driving device drives the supporting devices to move to a position close to the bearing plate, the bearing plate is driven to move upwards through the transmission device, when the driving device rotates reversely, the supporting devices are firstly driven to, and then the bearing plate is driven to move downwards through a transmission device, a lifting plate is vertically and slidably arranged in the supporting device and is driven by an electric hydraulic ejector rod arranged in the supporting device.

Preferably, the two transverse sides of the mold cavity are fixedly mounted on the base through L-shaped rods respectively, and each group of the supporting devices comprises two supporting rods which are longitudinally arranged at intervals and longitudinally slidably mounted on the base.

Preferably, the base is provided with a slideway which is matched with the support rods and the transmission plate in a sliding manner, two slideways which are matched with each other are internally provided with a bidirectional screw rod which longitudinally extends and is rotatably arranged in the slideway, the two support rods in the same group are in threaded fit with the bidirectional screw rod, and the bidirectional screw rod is connected with the driving device.

Preferably, the driving device comprises a driving motor arranged on the base between the two bidirectional screws and the driving motor drives the two bidirectional screws through a triangular belt pulley group, and one end of each bidirectional screw extending out of the slide way is matched with a transmission device.

Preferably, the transmission device comprises a first worm rotatably mounted on the side wall of the base, the first worm is hollow and coaxially arranged with one end of the bidirectional lead screw extending out of the slideway, a first drive plate is fixed on the outer circular surface of the bidirectional lead screw through the central axis of the bidirectional lead screw, two second drive plates are respectively and fixedly mounted on the two axial sides of the inner circular surface of the first worm, the first worm is meshed with a first worm wheel rotatably mounted on the base, the first worm wheel coaxially rotates with a second worm, the second worm is meshed with a second worm wheel rotatably mounted on the base, and the second worm wheel is connected with the pulley block.

Preferably, the vertical both sides in horizontal both ends of bearing board rotate respectively and install the connecting block, the assembly pulley is including rotating the first pulley of installing at L shape pole horizontal position and being located the coaxial rotation of two pulleys of horizontal homonymy, and the vertical part in L shape pole bottom that is located vertical one side rotates and installs the second pulley with the coaxial pivoted of second worm wheel, wire rope one end is connected with the connecting block and leads through first pulley, and the other end twines in the second pulley.

Preferably, S-shaped water pipes are fixedly mounted in the two longitudinal side walls of the mold cavity, the upper ends of the S-shaped water pipes are communicated with an external water source, and the bottoms of the S-shaped water pipes are open.

The beneficial effects of the technical scheme are as follows:

(1) the railway substrate forging die can quickly take out the railway substrate blank after forging from the die cavity, the whole process is easy, the die body does not need to be beaten or vibrated, the die body is further protected, and the service life of the die body is greatly prolonged;

(2) in the scheme, the S-shaped water pipe is arranged in the die cavity, when forging and demolding of the railway substrate blank are completed, an external water source is sent into the S-shaped water pipe and is discharged from the bottom of the S-shaped water pipe, the die body is cooled and cooled rapidly, and oxidation and damage to the die body due to long-time high-temperature roasting are avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic longitudinal side elevation view of the present invention;

FIG. 3 is a schematic view of the fitting relationship between the bidirectional screw and the slide way after the cross-sectional view of one end of the base of the present invention;

FIG. 4 is a schematic view of the support rod of the present invention sliding out from just below the support plate;

FIG. 5 is a schematic view of the supporting plate of the present invention moving down to the upper end of the base;

FIG. 6 is a schematic structural view of the present invention when two support rods are farthest away from each other;

FIG. 7 is a schematic view of the fitting relationship between the lifting plate and the supporting rod of the present invention;

FIG. 8 is a schematic view showing the relationship between the support rod and the transmission plate and the slide way and the two-way screw rod;

FIG. 9 is a schematic view of the relationship between one end of the bidirectional screw extending out of the base and the first worm of the present invention;

fig. 10 is a schematic view showing a matching relationship between the first driving board and the two second driving boards according to the present invention;

fig. 11 is the schematic diagram of the inside S-shaped water pipe structure after the longitudinal side section of the die cavity of the utility model.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 11. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

The first embodiment provides a railway substrate forging die, which is shown in fig. 1 and comprises a base 1, and is characterized in that a die cavity 2 with an opening at the lower end is fixedly installed on the base 1, a bearing plate 3 (shown in fig. 11) is installed on the lower end face of the die cavity 2 in a vertical sliding fit manner, two groups of supporting devices are transversely arranged on the base 1 below the bearing plate 3 at intervals, the supporting devices are longitudinally and slidably installed on the base 1, the supporting devices are connected with a transmission plate 4 longitudinally and slidably installed on the base 1 through a telescopic spring 24, the transmission plate 4 is connected with a driving device installed on the base 1, and as shown in fig. 1, two transverse sides of the bearing plate 3 are respectively connected with a steel wire rope 5, and the steel wire rope 5 is connected with a transmission device;

firstly, when the device is in an inoperative state, the supporting plate 3 is separated from the mold cavity 2 and is positioned on the upper end surface of the base 1, at this time, the supporting device is positioned outside a projection area of the supporting plate 3 on the base 1 (as shown in fig. 6), and the lifting plate 6 is contracted into the supporting device, namely, the lower end surface of the lifting plate 6 is abutted against the upper end surface of the supporting device (as shown in fig. 7), the bottom surface of the railway base plate is arranged in a plane and is generally fixed on a sleeper through a spike, and a rail bearing groove for fixing a steel rail is integrally stamped on the upper end surface of the railway base plate;

when a railway substrate blank needs to be forged (the railway substrate initial blank is an iron block after being heated and softened), the supporting device is driven by the driving device to slide along the base 1 towards the direction close to the bearing plate 3, when the supporting device moves to the position close to the bearing plate 3 under the driving of the driving device, the driving device drives the pulley block to rotate through the transmission device, and then the effect of driving the bearing plate 3 to move upwards is achieved by contracting the steel wire rope 5, meanwhile, the transmission plate 4 continues to drive the supporting device to move under the driving of the driving device, but at the moment, the supporting device cannot move forwards continuously due to the fact that one side, facing the bearing plate 3, of the supporting device abuts against the side wall of the bearing plate 3, so that the telescopic spring 24 connected between the supporting device and the transmission plate 4 is compressed and stores energy, and when the bearing plate 3 moves upwards under the driving of the steel wire rope 5 until the lower end face of the supporting plate is higher than the upper end face The upper end face of the bearing plate 3 is not abutted against the lower end face of the mold cavity 2), at the moment, the supporting device is not blocked by the bearing plate 3 any more, therefore, the supporting device starts to slide to the lower part of the bearing plate 3 along the base 1 under the action of the expansion spring 24, at the moment, the bearing plate 3 continues to move upwards under the drive of the steel wire rope 5, so that the driving device stops working when the upper end face of the bearing plate 3 is abutted against the lower end face of the mold cavity 2 (the driving device drives the driving plate 4 to continue moving in the process that the supporting device slides to the lower part of the bearing plate 3), then, an electric hydraulic ejector rod 7 arranged in the supporting device is controlled by an electric hydraulic ejector rod 7 controller to drive the lifting plate 6 to move upwards, the upper end face of the lifting plate 6 is abutted against the lower end face of the bearing plate 3, the lifting plates 6 jointly realize reliable support for the bearing plate 3, at the moment, a heated railway substrate blank can be placed into the mold cavity 2 and the railway substrate, forging the iron block by forging equipment (driving an upper punch to forge and press the iron block by a driving mechanism), and further forging the heated and softened iron block into the shape of the railway substrate;

after forging is finished, firstly, the controller of the electric hydraulic mandril 7 controls the electric hydraulic mandril 7 to drive the lifting plate 6 to move downwards and make the lifting plate move away from and contact with the lower end surface of the bearing plate 3, then, the controller controls the driving device to rotate reversely so as to drive the transmission plate 4 to slide along the base 1 in the opposite direction, so that the transmission plate 4 drives the supporting device matched with the transmission plate to move synchronously in the opposite direction, when the driving device drives the supporting device to completely slide out of the lower part of the bearing plate 3, the driving device starts to drive the pulley block to release the steel wire rope 5 through the transmission device, the bearing plate 3 starts to move downwards under the action of self gravity and finally descends to the upper end surface of the base 1 (because the supporting device already slides out of the lower part of the bearing plate 3 under the drive of the transmission plate 4 when the bearing plate 3 does not start to move downwards, therefore, the supporting device does not hinder the downward movement of the supporting plate 3), along with the downward movement of the supporting plate 3, if the railway substrate blank can just synchronously descend along with the descending of the supporting plate 3, just when the supporting plate 3 descends to the base 1, the railway substrate blank positioned on the supporting plate 3 can be pushed out from one side in the transverse direction, so that the demoulding operation of the railway substrate blank is completed, and if the railway substrate blank cannot synchronously downwards move along with the supporting plate 3, a slight pressure is applied to the upper end surface of the railway substrate blank by the aid of forging equipment (at the moment, the supporting plate 3 is not supported below the railway substrate), so that the railway substrate blank is forced to downwards move, and the demoulding operation of the railway substrate blank can also be realized.

In the second embodiment, on the basis of the first embodiment, referring to fig. 1, two lateral sides of the mold cavity 2 are respectively and fixedly mounted on the base 1 through L-shaped rods 8 (four L-shaped rods 8 are provided in total), and referring to fig. 3 and 4, each group of the supporting devices includes two supporting rods 9 which are longitudinally spaced and longitudinally slidably mounted on the base 1.

In the third embodiment, on the basis of the second embodiment, referring to fig. 4, a slideway 10 which is slidably mounted and matched with the supporting rod 9 and the transmission plate 4 is arranged on the base 1, two mutually matched slideways 10 are internally provided with a bidirectional screw rod 11 which longitudinally extends and is rotatably mounted in the slideway 10, the two supporting rods 9 and the bidirectional screw rod 11 in the same group are in threaded fit (the bidirectional screw rod 11 penetrates through the transmission plate 4 which is slidably mounted in the slideway 10 and is not in contact with the transmission plate 4), the bidirectional screw rod 11 is connected with a driving device, the driving device drives the bidirectional screw rod 11 to rotate so as to drive the two transmission plates 4 which are matched with each other to move towards each other (towards the direction of approaching each other) or away from each other (towards the direction of departing each other), so that the corresponding support rod 9 is driven by the extension spring 24 to move along the slideway 10.

In the fourth embodiment, on the basis of the third embodiment, the driving device includes a driving motor 12 installed on the base 1 between the two bidirectional screws 11, and the driving motor 12 drives the two bidirectional screws 11 through a triangular belt pulley set 13, that is, the driving motor 12 drives the two bidirectional screws 11 to rotate synchronously through the triangular belt pulley set 13, and further drives two sets of supporting rods 9 matched with each other to move, one end of each of the two bidirectional screws 11 extending out of the slideway 10 is matched with a transmission device, and we set that when the driving motor 12 drives the transmission plate 4 to move from the position shown in fig. 6 (i.e. the initial position) to the position shown in fig. 3, the transmission plate 4 drives the corresponding supporting rod 9 to move to the end of the slideway 10 located below the mold cavity 2, and at this time, the driving motor 12 drives the supporting plate 3 to move from the position shown in fig. 6 to the position shown in fig. 3 through the transmission device, the upper end face of the bearing plate 3 is abutted against the lower end face of the mold cavity 2 to complete the folding of the mold cavity 2, the driving motor 12 is controlled by the driving motor 12 controller to rotate, the bearing plate 3 is driven by the transmission device to move to the position shown in the attached drawing 3, the driving motor 12 stops working synchronously (the motor controller is an integrated circuit which controls the motor to work according to the set direction, speed, angle and response time through active working), and similarly, when the driving motor 12 is controlled by the driving motor 12 controller to rotate reversely, after the output shaft of the driving motor 12 rotates at the same angle, the driving motor 12 stops working under the control of the driving motor 12 controller.

Fifth embodiment, on the basis of the fourth embodiment, referring to fig. 10, the transmission device includes a first worm 14 rotatably mounted on a side wall of the base 1, the first worm 14 is hollow and coaxially arranged with one end of the bidirectional lead screw 11 extending out of the slideway 10, an outer circumferential surface of the bidirectional lead screw 11 is fixed with a first driving plate 15 through a central axis thereof, and two second driving plates 16 are respectively fixedly mounted on two axial sides of an inner circumferential surface of the first worm 14 (as shown in fig. 9, when the transmission plate 4 is in the position shown in fig. 6, initially, a side wall of the first driving plate 15 abuts against one of the second driving plates 16 which is located above as shown in fig. 9);

when the driving motor 12 is started, firstly, the triangular pulley set 13 drives the bidirectional screw 11 to rotate in the clockwise direction as shown in fig. 9, and then drives the first driving plate 15 to rotate towards the direction close to the second driving plate 16 located below, in the process that the first driving plate 15 moves from the position shown in fig. 9 to the position of the second driving plate 16 located below in the clockwise direction, the bidirectional screw 11 drives the supporting rod 9 to move to the position close to the supporting plate 3 through the driving plate 4 (i.e. moves from the position shown in fig. 6 to the position shown in fig. 4), in the process, the first worm 14 does not rotate, when the first driving plate 15 abuts against the second driving plate 16 located below, the bidirectional screw 11 starts to drive the first worm 14 to rotate through the first driving plate 15 and the second driving plate 16 which are matched with each other, and then drives the second worm 18 to rotate through the first worm wheel 17 which is meshed with the bidirectional screw, the second worm 18 drives the pulley block to contract the steel wire rope 5 through a second worm wheel 19 engaged with the second worm 18, so as to achieve an effect of driving the bearing plate 3 to move upwards, the transmission plate 4 drives the corresponding support rod 9 to move continuously along with the continuous rotation of the bidirectional screw 11, and one side of the support rod 9 facing the bearing plate 3 is abutted against the side wall of the bearing plate 3, at this time, the support rod 9 cannot move forwards continuously, and then the telescopic spring 24 starts to be extruded (in the process, the transmission plate 4 continues to move towards the direction close to the bearing plate 3 under the driving of the bidirectional screw 11), so that when the bearing plate 3 moves upwards under the driving of the steel wire rope 5 until the lower end face of the bearing plate 3 is higher than the upper end face of the lifting plate 6, the support rod 9 is not blocked by the bearing plate 3 any more, and then moves towards the lower side of the bearing plate 3 rapidly under the action of the telescopic spring 24, and at the same time, the transmission plate 4 continues to move forwards under The lifting plate 6 is driven to move upwards by an electric hydraulic ejector rod 7 controller, the electric hydraulic ejector rod 7 is installed in a supporting rod 9, the lifting plate 6 is driven to move upwards, the upper end face of the lifting plate 6 abuts against the lower end face of the bearing plate 3, and the bearing plate 3 is reliably supported by the plurality of lifting plates 6 together;

after the forging work of the railway base plate is completed, firstly, the electric hydraulic mandril 7 arranged in the supporting rod 9 is controlled by the controller of the electric hydraulic mandril 7 to drive the lifting plate 6 to move downwards to be separated from the supporting plate 3, then the controller of the driving motor 12 controls the driving motor 12 to rotate reversely, at the moment, the driving motor 12 drives the bidirectional screw rod 11 to rotate reversely and further drives the supporting rod 9 to move along the opposite direction by the driving plate 4, at the moment, the first driving plate 15 starts to rotate towards the direction close to the other second driving plate 16, when the first driving plate 15 rotates to the position of the other second driving plate 16, the bidirectional screw rod 11 drives the supporting rod 9 to move outwards from the lower part of the supporting plate 3 by the driving plate 4, at the moment, the first driving plate 15 abuts against the second driving plate 16 and drives the first worm 14 to rotate, at the moment, the first worm 14 drives the driving plate to start to release the pulley block 5 by the worm, the supporting plate 3 starts to move downwards slowly under the action of self gravity, as shown in the attached drawing 11, a guide rod 25 which is in vertical sliding fit with the mold cavity 2 is fixed on the upper end face of the supporting plate 3 and used for limiting the supporting plate 3 in the vertical direction, so that when the supporting plate 3 moves downwards to the upper end face of the base 1, the driving motor 12 stops working under the control of the driving motor 12 controller, and at the moment, the driving plate 4 just moves to the position shown in the attached drawing 6, and the resetting of the whole device is completed.

Sixth embodiment, on the basis of the fifth embodiment, referring to fig. 1, the bearing plate 3 is rotatably installed at both longitudinal sides at both transverse ends, respectively, referring to fig. 2, the pulley block includes a first pulley 21 rotatably installed at a horizontal position of the L-shaped rod 8, and two pulleys coaxially rotating at the same transverse side (as shown in fig. 4), referring to fig. 6, a second pulley 22 coaxially rotating with the second worm wheel 19 is rotatably installed at a vertical portion of a bottom end of the L-shaped rod 8 at one longitudinal side, one end of the steel wire rope 5 is connected with the connecting block 20 and guided by the first pulley 21, and the other end is wound around the second pulley 22, when the second worm 18 drives the second pulley 22 to contract the steel wire rope 5, the bearing plate 3 is driven to move upward by the guide of the first pulley 21, and when the second worm 18 reversely rotates, the second pulley 22 releases the steel wire rope 5, the support plate 3 moves downward by its own weight.

Seventh embodiment, on the basis of embodiment 1, referring to fig. 11, S-shaped water pipes 23 are fixedly installed in two longitudinal side walls of the mold cavity 2, an upper end of each S-shaped water pipe 23 is communicated with an external water source, a bottom of each S-shaped water pipe 23 is open, after forging is completed, an inner wall of the mold cavity 2 is in a high-temperature state under the roasting of the heated and softened railway substrate blank, at this time, an external water source enters the S-shaped water pipes 23 through the upper ends of the S-shaped water pipes 23, water is discharged outwards from the lower ends of the S-shaped water pipes 23 to take away heat in the mold cavity 2, an effect of rapidly cooling the mold cavity 2 is achieved, oxidation of the surface of the mold cavity 2 subjected to high-temperature roasting for a long time is avoided, and the service life of the mold cavity is affected, and the S-shaped water pipes 23 can bear the high-temperature roasting.

The railway substrate forging die can quickly take out the railway substrate blank after forging from the die cavity 2, the whole process is easy, the die body does not need to be beaten or vibrated, the die body is further protected, and the service life of the die body is greatly prolonged;

in this scheme, we are provided with S-shaped water pipe 23 in mould cavity 2, after accomplishing the forging of railway base plate blank, the drawing of patterns, we send external water source into S-shaped water pipe 23 this moment in and outwards discharge from S-shaped water pipe 23 bottom, carry out rapid cooling, heat dissipation to the mould body, avoided the mould body to produce the oxidation because of roast the long-time high temperature, destroy the mould body, driving motor is connected with external power supply in this scheme, and electronic hydraulic ram return circuit is provided the electric energy by external power supply equally.

The above description is only for the purpose of illustration, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a railway base plate forges mould, includes base (1), its characterized in that, fixed mounting has lower extreme open-ended mould cavity (2) and the vertical sliding fit of terminal surface installs bearing board (3) under mould cavity (2) on base (1), be located transverse interval is provided with two sets of strutting arrangement on base (1) of bearing board (3) below, strutting arrangement longitudinal sliding installs on base (1) and strutting arrangement is connected with drive plate (4) on base (1) longitudinal sliding installs through expanding spring (24), drive plate (4) are connected with the drive arrangement of installing on base (1), the horizontal both sides of bearing board (3) are connected with wire rope (5) respectively and wire rope (5) are connected with transmission through the assembly pulley, transmission drives through drive arrangement and begins to drive bearing board (3) through transmission arrangement when drive arrangement drives strutting arrangement and removes to being close to bearing board (3) position (3) The lifting device is characterized by moving upwards, when the driving device rotates reversely, firstly, the supporting device is driven to move outwards to the position below the bearing plate (3), the bearing plate (3) is driven to move downwards through the transmission device, the lifting plate (6) is vertically and slidably mounted in the supporting device, and the lifting plate (6) is driven by an electric hydraulic ejector rod (7) mounted in the supporting device.

2. The railway baseplate forging die as claimed in claim 1, wherein the die cavity (2) is fixedly mounted on the base (1) through L-shaped rods (8) at two lateral sides respectively, and each set of the supporting devices comprises two supporting rods (9) which are longitudinally arranged at intervals and longitudinally slidably mounted on the base (1).

3. The railway substrate forging die according to claim 2, wherein the base (1) is provided with a slideway (10) which is slidably mounted and matched with the supporting rods (9) and the transmission plate (4), two mutually matched slideways (10) are internally provided with two-way lead screws (11) which longitudinally extend and are rotatably mounted in the slideways (10), the two supporting rods (9) and the two-way lead screws (11) in the same group are in threaded fit, and the two-way lead screws (11) are connected with a driving device.

4. The railway baseplate forging die as claimed in claim 3, wherein the driving device comprises a driving motor (12) installed on the base (1) between the two bidirectional lead screws (11), the driving motor (12) drives the two bidirectional lead screws (11) through a triangular belt pulley group (13), and a transmission device is matched at one end of each of the two bidirectional lead screws (11) extending out of the slideway (10).

5. Railway baseplate forging die according to claim 4, wherein the transmission means comprise a first worm screw (14) rotatably mounted on a side wall of the base (1), the first worm (14) is hollow and is coaxially arranged with one end of the bidirectional screw rod (11) extending out of the slideway (10), a first driving plate (15) is fixed on the outer circular surface of the bidirectional screw rod (11) through the central axis thereof, two second driving plates (16) are respectively and fixedly arranged on the two axial sides of the inner circular surface of the first worm (14), the first worm (14) is engaged with a first worm wheel (17) which is rotatably arranged on the base (1), the first worm wheel (17) coaxially rotates to form a second worm (18), the second worm (18) is meshed with a second worm wheel (19) rotatably mounted on the base (1), and the second worm wheel (19) is connected with the pulley block.

6. The railway baseplate forging die as claimed in claim 5, wherein the bearing plate (3) is rotatably provided with connecting blocks (20) at both transverse ends and at both longitudinal sides respectively, the pulley block comprises a first pulley (21) rotatably arranged at the horizontal position of the L-shaped rod (8) and two pulleys coaxially rotating at the same transverse side, a second pulley (22) coaxially rotating with the second worm gear (19) is rotatably arranged at the vertical part of the bottom end of the L-shaped rod (8) at one longitudinal side, one end of the steel wire rope (5) is connected with the connecting blocks (20) and is guided by the first pulley (21), and the other end of the steel wire rope is wound on the second pulley (22).

7. The railway baseplate forging die as claimed in claim 1, wherein S-shaped water pipes (23) are fixedly mounted in two longitudinal side walls of the die cavity (2), the upper ends of the S-shaped water pipes (23) are communicated with an external water source, and the bottoms of the S-shaped water pipes (23) are open.