A train car door reshaping device

Abstract

The application relates to a train carriage door shaping device, which comprises a rack, the rack is provided with a sliding table in the horizontal direction, the sliding table is provided with a sliding frame, the sliding frame is perpendicular to the sliding table, the sliding frame is provided with a stamping hydraulic cylinder, the piston rod of the stamping hydraulic cylinder is provided with a stamping head, the stamping hydraulic cylinder drives the stamping head to slide, the sliding direction of the stamping head is perpendicular to the sliding frame, the sliding table is driven to slide to approach the train carriage door, so that the sliding frame drives the stamping head to approach the train carriage door which needs to be shaped, then the stamping head is driven to slide to adjust the shaping position, the stamping hydraulic cylinder is started to stamp the train carriage door, and the train carriage door does not need to be separately disassembled for shaping. The application has the function of improving work efficiency.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of door plate shaping, in particular to a train carriage door shaping device. BACKGROUND

[0002] In the modern freight transportation process, when goods such as coal and sand are transported over a long distance, trains are usually used for transportation. The train carriages used for pulling goods are generally topless carriages, goods are loaded from the top of the carriage, and the side walls of the carriage are provided with discharge ports. The inclined discharge port is detachably connected with an iron sheet door plate. Because the weight of the goods is large, the iron sheet door plate is easily extruded and deformed by the goods in the carriage during long-distance transportation, and thus protrudes outward. Therefore, a shaping machine needs to be used frequently to shape the train carriage door.

[0003] In the prior art, the shaping device generally comprises a rack, the rack is horizontally provided with a placing table, and a stamping device is vertically arranged on the rack. During shaping, the deformed door plate is placed horizontally on the placing table, and then the stamping device is started to stamp the door plate, so as to flatten the door plate.

[0004] According to the related technology in the above, the inventor believes that when shaping the door plate, the door plate needs to be detached from the train carriage first, and then shaping is performed, thereby reducing the work efficiency. SUMMARY

[0005] In order to enable the staff to replace the rubber sleeve in time, thereby improving the test effect of the game handle, the application provides a train carriage door shaping device.

[0006] The train carriage door shaping device provided by the application adopts the following technical scheme:

[0007] A train carriage door shaping device comprises a rack, the rack is horizontally slidably provided with a sliding table, the sliding table is provided with a sliding frame, the sliding frame is perpendicular to the sliding table, the sliding frame is slidably provided with a stamping hydraulic cylinder, the piston rod of the stamping hydraulic cylinder is provided with a stamping head, the stamping hydraulic cylinder drives the stamping head to slide, and the sliding direction of the stamping head is perpendicular to the sliding frame.

[0008] By adopting the above technical scheme, the sliding table is driven to slide close to the train carriage door, so that the sliding frame drives the stamping head to approach the train carriage door that needs to be shaped. Then, the stamping head is driven to slide to adjust the shaping position, and the stamping hydraulic cylinder is started to stamp the train carriage door. The train carriage door does not need to be detached for shaping, thereby improving the work efficiency.

[0009] Optionally, the rack is provided with a power assembly for driving the stamping hydraulic cylinder to slide, the power assembly comprises a first hydraulic cylinder, a first fixed pulley, a second fixed pulley and a connecting chain, the first hydraulic cylinder is arranged in parallel to the slide rack, the first fixed pulley is arranged on the piston rod of the first hydraulic cylinder, the second fixed pulley is arranged on the end of the slide rack away from the slide table, one end of the connecting chain is fixedly connected to the end of the slide rack away from the slide table, and the other end of the connecting chain passes through the first fixed pulley and the second fixed pulley and is fixedly connected to the cylinder body of the stamping hydraulic cylinder.

[0010] By adopting the above technical scheme, when it is necessary to adjust the stamping position of the stamping head on the carriage door, the first hydraulic cylinder is driven, so that the piston rod of the first hydraulic cylinder drives the first fixed pulley to slide along the length direction of the slide rack, the first fixed pulley drives the stamping hydraulic cylinder to slide through the connecting chain, and thus the stamping position of the stamping head is changed. It is not necessary to manually drive the stamping hydraulic cylinder to slide, and it is convenient to adjust the shaping position.

[0011] Optionally, the rack is provided with a second hydraulic cylinder for driving the slide table to slide.

[0012] By adopting the above technical scheme, the second hydraulic cylinder is started to drive the slide table to slide, which is convenient and fast.

[0013] Optionally, the end of the slide rack away from the slide table is rotatably provided with a clamping plate, one end of the clamping plate is rotatably connected to the slide rack, and the other end of the clamping plate can rotate to approach or be away from the slide table.

[0014] By adopting the above technical scheme, after the slide table slides to approach the carriage door, the slide table drives the clamping plate to slide to the top of the carriage through the slide rack, the slide table extends into the bottom of the carriage, and then the clamping plate is driven to rotate and abut against the top of the carriage. The shaping device is fixed at the carriage door under the clamping action of the slide table and the clamping plate. The probability that the shaping device moves under the counterforce when the stamping head impacts the carriage door is reduced, and the shaping process is more stable.

[0015] Optionally, the slide rack is provided with a third hydraulic cylinder, and the third hydraulic cylinder is used for driving the clamping plate to rotate.

[0016] By adopting the above technical scheme, the third hydraulic cylinder is started to drive the clamping plate to rotate, which is convenient and fast.

[0017] Optionally, the cylinder body of the stamping hydraulic cylinder is provided with a self-locking strip arranged along the sliding direction of the stamping head, the self-locking strip is provided with a plurality of self-locking grooves distributed along the sliding direction of the stamping head, the self-locking strip is provided with a sliding frame, the sliding frame is provided with a self-locking block arranged to slide along the sliding direction of the stamping head, a self-locking spring is arranged between the self-locking block and the sliding frame, the self-locking spring can drive the self-locking block to slide and insert into the self-locking groove, the self-locking block is provided with a first wedge block at one end of the self-locking groove, the inclined surface of the first wedge block is inclined towards the stamping head and the self-locking groove, and a connecting assembly is arranged between the self-locking block and the stamping head.

[0018] By adopting the above technical scheme, when the stamping hydraulic cylinder drives the stamping head to slide against the compartment door for stamping, the stamping head drives the self-locking block to slide through the connecting assembly, the stamping head contacts the compartment door once for each sliding, and drives the self-locking block to slide and insert into one self-locking groove, since the self-locking block is extruded out of the self-locking groove along the inclined surface of the first wedge block each time the self-locking block slides out of the self-locking groove, the self-locking block can only slide away from the sliding frame, and after the self-locking block slides and inserts into the self-locking groove farthest from the sliding frame, the self-locking block cannot slide out of the self-locking groove, at this time, the stamping head cannot move again, so that the stamping hydraulic cylinder is self-locked, and before the compartment door is reshaped, the self-locking block is inserted into the first self-locking groove according to the deformation degree of the compartment door, so that the stamping times of the stamping head are limited, and the stamping head can automatically stop after reaching the stamping times without the presence of a staff, thereby reducing the probability of over-stamping of the compartment door by the stamping head due to the absence of a staff.

[0019] Optionally, the connecting assembly comprises a connecting plug rod and a connecting rod sleeve, one end of the connecting plug rod is fixedly connected to the stamping head, one end of the connecting rod sleeve is slidably sleeved on the end of the connecting plug rod away from the stamping head, the other end of the connecting rod sleeve is fixedly connected to the self-locking block, the end of the connecting plug rod inserted into the connecting rod sleeve is provided with a second wedge block arranged to slide along the radial direction of the stamping head, a driving spring is arranged between the connecting plug rod and the second wedge block, a plurality of clamping grooves are formed in the inner wall of the connecting rod sleeve and distributed along the sliding direction of the connecting plug rod, the driving spring can drive the second wedge block to slide and insert into the clamping groove, and the inclined surface of the second wedge block faces away from the stamping head and towards the clamping groove.

[0020] By adopting the technical scheme, when the stamping hydraulic cylinder drives the piston rod to extend out of the cylinder body, the self-locking block shifts to a self-locking groove, at this time, the stamping hydraulic cylinder drives the piston rod to retract into the cylinder body, the connecting rod is inserted into the connecting rod sleeve by the stamping head, the second wedge-shaped block is shifted to a clamping groove by the connecting rod, and the second wedge-shaped block is inserted into the clamping groove. Because of the direction of the inclined surface of the second wedge-shaped block, the connecting rod can only slide towards the sliding frame and retract, and the double cooperation of the connecting assembly and the self-locking block reduces the probability that the kinetic energy becomes smaller and the impact force becomes smaller due to the shorter stroke of the piston rod of the stamping hydraulic cylinder.

[0021] Optionally, the stamping head comprises a fixed disc and a sliding plate, the fixed disc is fixedly connected to the piston rod of the stamping hydraulic cylinder, the sliding plate is arranged on the fixed disc in a radial direction of the stamping head, and the connecting rod is fixedly connected to the sliding plate at an end away from the connecting rod sleeve.

[0022] By adopting the technical scheme, as the stamping head drives the self-locking block to shift from a self-locking groove with a smaller depth to a self-locking groove with a larger depth, the self-locking block drives the sliding plate to gradually insert into the fixed disc in a radial direction of the fixed disc through the connecting assembly, so that the area of the stamping head gradually changes from large to small, and the stamping area gradually changes when the stamping head is used to stamp the protruding and deformed compartment door, thereby improving the shaping effect of the compartment door.

[0023] Optionally, the side wall of the self-locking block is provided with a first shifting block, the first shifting block penetrates through the sliding frame and extends to the outside, and the side wall of the second wedge-shaped block is provided with a second shifting block, the second shifting block penetrates through the connecting rod sleeve and extends to the outside.

[0024] By adopting the technical scheme, when it is necessary to adjust the initial position of the self-locking block, the first shifting block and the second shifting block are simultaneously shifted, the self-locking block is taken out of the self-locking groove by shifting the first shifting block, and then the self-locking block is driven to shift to a required self-locking groove and is inserted, so that the initial position of the self-locking block and the length of the connecting assembly are adjusted from the outside, thereby facilitating adjustment of the stamping times of the stamping head according to the deformation degree of the compartment door.

[0025] Optionally, the end of the clamping plate away from the sliding frame is provided with a first abutting block, the end of the sliding table away from the sliding frame is provided with a second abutting block, and the first abutting block and the second abutting block are oppositely arranged.

[0026] By adopting the technical scheme, when the clamping plate and the sliding table clamp the compartment, the first abutting block and the second abutting block abut against the inner wall of the compartment, respectively, thereby further improving the stability of the shaping device in the shaping process.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The train carriage door shaping device does not need to be disassembled and shaped separately, thereby improving work efficiency.

[0029] 2. The self-locking block can set the punching frequency of the punch head, and the staff does not need to be on standby, thereby saving manpower. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application.

[0031] Figure 2 It is a schematic diagram of the structure of the sliding table in the embodiment.

[0032] Figure 3 It is a schematic diagram of the structure of the punching hydraulic cylinder part in the embodiment.

[0033] Figure 4 It is a schematic diagram of the structure of the self-locking strip, the sliding frame and the connecting assembly in the embodiment.

[0034] Explanation of reference signs: 1, rack; 2, sliding table; 3, sliding frame; 4, punching hydraulic cylinder; 5, punch head; 501, fixed disc; 502, sliding plate; 6, clamping plate; 7, first abutting block; 8, second abutting block; 9, power assembly; 901, first hydraulic cylinder; 902, first fixed pulley; 903, second fixed pulley; 904, connecting chain; 10, mounting frame; 11, second hydraulic cylinder; 12, third hydraulic cylinder; 13, self-locking strip; 14, self-locking groove; 15, sliding frame; 16, self-locking block; 17, self-locking spring; 18, first wedge-shaped block; 19, connecting assembly; 1901, connecting plug rod; 1902, connecting rod sleeve; 20, second wedge-shaped block; 21, driving spring; 22, clamping groove; 23, first shifting block; 24, second shifting block. DETAILED DESCRIPTION

[0035] The following will be described in detail in combination with the accompanying drawings. Figures 1-4 The present application will be further described in detail.

[0036] The embodiment of the present application discloses a train carriage door shaping device.

[0037] The train carriage door shaping device is described in detail with reference to the accompanying drawings. Figure 1 and Figure 2The utility model relates to a kind of vehicle carriage door shaping device, including organic frame 1, frame 1 can be detachably mounted to fork truck, frame 1 is slidably connected with sliding table 2 along horizontal direction, frame 1 is provided with second hydraulic cylinder 11 for driving sliding table 2 sliding, the cylinder body of second hydraulic cylinder 11 is fixedly arranged on frame 1, sliding table 2 is fixedly connected to the piston rod of second hydraulic cylinder 11, sliding table 2 is fixedly arranged with sliding frame 3, sliding frame 3 is perpendicular to sliding table 2, sliding frame 3 is slidably connected with stamping hydraulic cylinder 4, the cylinder body of stamping hydraulic cylinder 4 is slidably connected with sliding frame 3 and along the length direction of sliding frame 3, the piston rod of stamping hydraulic cylinder 4 is fixedly arranged with stamping head 5, stamping hydraulic cylinder 4 drives stamping head 5 to slide, drive sliding table 2 to slide close to train carriage door, so that sliding frame 3 drives stamping head 5 to close to the train carriage door needing to be shaped, then drive stamping head 5 to slide and adjust shaping position, start stamping hydraulic cylinder 4 again to stamp train carriage door, without separately disassembling train carriage door to shape, so as to improve work efficiency.

[0038] Referring to Figure 1 And Figure 2 Sliding frame 3 is rotatably connected with clamping plate 6 away from one end of sliding table 2, one end of clamping plate 6 is rotatably connected to sliding frame 3, the other end of clamping plate 6 can be rotatable close to or away from sliding table 2, clamping plate 6 is arranged along the sliding direction of stamping head 5, clamping plate 6 is kept on the same straight line with sliding table 2, first abutting block 7 is fixedly arranged on the end of clamping plate 6 away from sliding frame 3, second abutting block 8 is fixedly arranged on the end of sliding table 2 away from sliding frame 3, first abutting block 7 and second abutting block 8 are oppositely arranged, sliding frame 3 is provided with third hydraulic cylinder 12, the cylinder body of third hydraulic cylinder 12 is rotatably connected to the side wall of sliding frame 3, the piston rod of third hydraulic cylinder 12 is rotatably connected to the end of pressing plate away from first abutting block 7, third hydraulic cylinder 12 is used to drive clamping plate 6 to rotate, after sliding table 2 slides close to carriage door, sliding table 2 drives clamping plate 6 to slide to carriage top through sliding frame 3, sliding table 2 extends into carriage bottom, then drive clamping plate 6 to rotate and abut against carriage top, under the clamping action of sliding table 2 and clamping plate 6, shape device is fixed at carriage door, reduce the probability that shape device is subjected to counterthrust and moves when stamping head 5 impacts carriage door, so that shaping process is more stable, when clamping plate 6 and sliding table 2 clamp carriage, first abutting block 7 and second abutting block 8 abut against the inner wall of carriage respectively, further improve the stability of shape device in shaping process.

[0039] Referring to Figure 1 And Figure 2, the rack 1 is provided with a power assembly 9 for driving the stamping hydraulic cylinder 4 to slide, the power assembly 9 comprises a first hydraulic cylinder 901 arranged on the slide frame 3, a first fixed pulley 902 arranged on the piston rod of the first hydraulic cylinder 901, a second fixed pulley 903 arranged on the slide frame 3, and a connecting chain 904 arranged between the first fixed pulley 902 and the second fixed pulley 903, the first hydraulic cylinder 901 is fixedly arranged on the side wall of the slide frame 3 away from the stamping hydraulic cylinder 4, the first fixed pulley 902 is fixedly arranged on the piston rod of the first hydraulic cylinder 901, the slide frame 3 is fixedly provided with a mounting bracket 10 away from the slide table 2, the mounting bracket 10 is arranged on the slide frame 3 along the sliding direction of the stamping head 5, the second fixed pulley 903 has two, and the two second fixed pulleys 903 are fixedly arranged at the two ends of the mounting bracket 10 in the length direction, the slide frame 3 is fixedly provided with a connecting block away from the slide table 2, one end of the connecting chain 904 is fixedly connected to the connecting block, the other end of the connecting chain 904 passes through the first fixed pulley 902 first, then passes through the second fixed pulley 903 and is fixedly connected to the cylinder body of the stamping hydraulic cylinder 4, when it is necessary to adjust the stamping position of the stamping head 5 on the door of the vehicle compartment, the first hydraulic cylinder 901 is driven, so that the piston rod of the first hydraulic cylinder 901 drives the first fixed pulley 902 to slide along the length direction of the slide frame 3, the first fixed pulley 902 drives the stamping hydraulic cylinder 4 to slide through the connecting chain 904, and then the stamping position of the stamping head 5 is changed, so that the stamping hydraulic cylinder 4 does not need to be manually driven to slide, and the shaping position is convenient to adjust.

[0040] With reference to Figure 3 and Figure 4 , the cylinder body of the stamping hydraulic cylinder 4 is fixedly provided with a self-locking strip 13 along the sliding direction of the stamping head 5, the self-locking strip 13 has four, the four self-locking strips 13 are distributed in the circumferential direction of the cylinder body of the stamping hydraulic cylinder 4, the self-locking strip 13 is provided with a plurality of self-locking grooves 14, the plurality of self-locking grooves 14 are distributed along the sliding direction of the stamping head 5, the depths of the plurality of self-locking grooves 14 gradually increase along the direction in which the piston rod of the stamping hydraulic cylinder 4 extends, the self-locking strip 13 is fixedly provided with a sliding frame 15 along the length direction of the self-locking strip 13, the sliding frame 15 is slidably provided with a self-locking block 16 along the sliding direction of the stamping head 5, a self-locking spring 17 is arranged between the self-locking block 16 and the sliding frame 15, one end of the self-locking spring 17 is fixedly connected to the self-locking block 16, the other end of the self-locking spring 17 is fixedly connected to the sliding frame 15, the self-locking spring 17 can drive the self-locking block 16 to slide and be inserted into the self-locking groove 14, the self-locking block 16 is provided with a first wedge-shaped block 18 at one end facing the self-locking groove 14, the inclined surface of the first wedge-shaped block 18 is inclined toward the stamping head 5 and the self-locking groove 14, the length from the tip of the first wedge-shaped block 18 to the self-locking block 16 is less than the depth of the self-locking groove 14 closest to the stamping head 5 and greater than the depths of the remaining self-locking grooves 14;

[0041] With reference to Figure 3 and Figure 4The connecting assembly 19 is arranged between the self-locking block 16 and the stamping head 5, and includes a connecting plug rod 1901 and a connecting rod sleeve 1902. One end of the connecting plug rod 1901 is fixedly connected to the stamping head 5, one end of the connecting rod sleeve 1902 is slidably sleeved on the end of the connecting plug rod 1901 away from the stamping head 5, and the other end of the connecting rod sleeve 1902 is fixedly connected to the self-locking block 16. The second wedge block 20 is arranged on the end of the connecting plug rod 1901 inserted into the connecting rod sleeve 1902, and is arranged on the connecting plug rod 1901 in a radial direction of the stamping head 5. The driving spring 21 is arranged between the connecting plug rod 1901 and the second wedge block 20, one end of the driving spring 21 is fixedly connected to the second wedge block 20, and the other end of the driving spring 21 is fixedly connected to the connecting plug rod 1901. The connecting rod sleeve 1902 is provided with a plurality of clamping grooves 22 on the inner wall, and the plurality of clamping grooves 22 are distributed along the sliding direction of the connecting plug rod 1901. The driving spring 21 can drive the second wedge block 20 to slide and be inserted into the clamping groove 22. The inclined surface of the second wedge block 20 is away from the stamping head 5 and faces the clamping groove 22;

[0042] With reference to Figure 3 and Figure 4 When the stamping hydraulic cylinder 4 drives the stamping head 5 to slide against the compartment door, the stamping head 5 drives the self-locking block 16 to slide through the connecting assembly 19. The stamping head 5 drives the self-locking block 16 to slide and be inserted into one self-locking groove 14 every time the stamping head 5 slides against the compartment door. Since the self-locking block 16 is extruded out of the self-locking groove 14 along the inclined surface of the first wedge block 18 every time the self-locking block 16 slides out of the self-locking groove 14, the self-locking block 16 can only slide away from the sliding frame 3. After the self-locking block 16 slides and is inserted into the self-locking groove 14 farthest from the sliding frame 3, the self-locking block 16 cannot slide out of the self-locking groove 14, and at this time, the stamping head 5 cannot move, so that the stamping hydraulic cylinder 4 is self-locked. Before the compartment door is reshaped, the self-locking block 16 is inserted into the first self-locking groove 14 according to the deformation degree of the compartment door, so that the number of stamping times of the stamping head 5 is limited. After the stamping head 5 reaches the number of stamping times, the stamping head 5 automatically stops, thereby reducing the probability of over-stamping of the compartment door by the stamping head 5 due to the absence of a staff member;

[0043] With reference to Figure 3 and Figure 4When the stamping hydraulic cylinder 4 drives the piston rod to extend out of the cylinder body, the self-locking block 16 slides and shifts in the self-locking groove 14, and at this time the stamping hydraulic cylinder 4 drives the piston rod to retract into the cylinder body, and the connecting plug rod 1901 is driven by the stamping head 5 to slide towards the inside of the connecting rod sleeve 1902 and insert, the connecting plug rod 1901 drives the second wedge block 20 to slide into a clamping groove 22 and make the second wedge block 20 insert into the clamping groove 22, and due to the direction of the inclined surface of the second wedge block 20, the connecting plug rod 1901 can only slide and retract towards the sliding frame 3, and the double cooperation of the connecting assembly 19 and the self-locking block 16 reduces the probability that the kinetic energy becomes smaller and the impact force becomes smaller due to the shortening of the stroke of the piston rod of the stamping hydraulic cylinder 4.

[0044] With reference to Figure 3 and Figure 4 , the first shifting block 23 is fixedly arranged on the side wall of the self-locking block 16, penetrates through the sliding frame 15 and extends to the outside, the second shifting block 24 is fixedly arranged on the side wall of the second wedge block 20, penetrates through the connecting rod sleeve 1902 and extends to the outside, when it is needed to adjust the initial position of the self-locking block 16, the first shifting block 23 and the second shifting block 24 are simultaneously shifted, the self-locking block 16 is taken out of the self-locking groove 14 by shifting the first shifting block 23, the self-locking block 16 is driven to slide to the required self-locking groove 14 and insert, which is convenient for adjusting the initial position of the self-locking block 16 and the length of the connecting assembly 19 from the outside, so as to adjust the stamping times of the stamping head 5 according to the deformation degree of the carriage door.

[0045] With reference to Figure 3 and Figure 4 , the stamping head 5 comprises a fixed disc 501 arranged on the piston rod of the stamping hydraulic cylinder 4 and a sliding plate 502 slidingly arranged on the fixed disc 501, the fixed disc 501 is fixedly connected to the piston rod of the stamping hydraulic cylinder 4, the sliding plate 502 is four, the four sliding plates 502 correspond to the four connecting assemblies 19 one by one, the sliding plate 502 is radially slidingly arranged in the fixed disc 501, the connecting plug rod 1901 is fixedly connected to the sliding plate 502 at the end away from the connecting rod sleeve 1902, as the stamping head 5 drives the self-locking block 16 to shift from the self-locking groove 14 with a smaller depth to the self-locking groove 14 with a larger depth, the self-locking block 16 drives the sliding plate 502 to gradually radially insert into the fixed disc 501 through the connecting assembly 19, so as to make the area of the stamping head 5 change from large to small, and gradually change the stamping area when stamping the protruding deformation carriage door, which improves the shaping effect of the carriage door.

[0046] The principle of the embodiment is that the frame 1 is installed on the forklift, the forklift is started to make the shaping device close to the carriage, then the sliding table 2 is driven to extend into the bottom of the carriage and the clamping plate 6 is driven to rotate to clamp the carriage, then the stamping hydraulic cylinder 4 is driven to slide to the appropriate position, according to the deformation degree of the carriage door, the initial position of the self-locking block 16 is manually adjusted, then the stamping hydraulic cylinder 4 is started to begin stamping and shaping the carriage door.

[0047] The above is the preferred embodiment of the present application, which does not limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A device for shaping a door of a railway car, comprising a frame (1), characterized in that: The rack (1) is slidably arranged along the horizontal direction with a sliding table (2), the sliding table (2) is provided with a sliding frame (3), the sliding frame (3) is perpendicular to the sliding table (2), the sliding frame (3) is slidably arranged with a stamping hydraulic cylinder (4), the piston rod of the stamping hydraulic cylinder (4) is provided with a stamping head (5), the stamping hydraulic cylinder (4) drives the stamping head (5) to slide, and the sliding direction of the stamping head (5) is perpendicular to the sliding frame (3); The cylinder body of the stamping hydraulic cylinder (4) is provided with a self-locking strip (13), the self-locking strip (13) is arranged along the sliding direction of the stamping head (5), a plurality of self-locking grooves (14) are formed in the self-locking strip (13), the plurality of self-locking grooves (14) are distributed along the sliding direction of the stamping head (5), the self-locking strip (13) is provided with a sliding frame (15), the sliding frame (15) is slidably arranged with a self-locking block (16) along the sliding direction of the stamping head (5), a self-locking spring (17) is arranged between the self-locking block (16) and the sliding frame (15), the self-locking spring (17) can drive the self-locking block (16) to slide and insert into the self-locking groove (14), the first wedge block (18) is arranged at one end of the self-locking groove (14) and faces the self-locking groove (14), the inclined surface of the first wedge block (18) is inclined to the stamping head (5) and the self-locking groove (14), and a connecting assembly (19) is arranged between the self-locking block (16) and the stamping head (5); The connecting assembly (19) comprises a connecting plug rod (1901) and a connecting rod sleeve (1902), one end of the connecting plug rod (1901) is fixedly connected to the stamping head (5), one end of the connecting rod sleeve (1902) is slidably sleeved on the end of the connecting plug rod (1901) away from the stamping head (5), the other end of the connecting rod sleeve (1902) is fixedly connected to the self-locking block (16), the second wedge block (20) is arranged at one end of the connecting plug rod (1901) inserted into the connecting rod sleeve (1902), the second wedge block (20) is arranged on the connecting plug rod (1901) along the radial direction of the stamping head (5), the driving spring (21) is arranged between the connecting plug rod (1901) and the second wedge block (20), a plurality of clamping grooves (22) are formed in the inner wall of the connecting rod sleeve (1902), the plurality of clamping grooves (22) are distributed along the sliding direction of the connecting plug rod (1901), the driving spring (21) can drive the second wedge block (20) to slide and insert into the clamping groove (22), and the inclined surface of the second wedge block (20) is away from the stamping head (5) and faces the clamping groove (22).

2. A train car door reshaping device as defined in claim 1, wherein: The rack (1) is provided with a power assembly (9) for driving the stamping hydraulic cylinder (4) to slide, the power assembly (9) comprises a first hydraulic cylinder (901), a first fixed pulley (902), a second fixed pulley (903) and a connecting chain (904), the first hydraulic cylinder (901) is arranged in parallel to the slide rack (3), the first fixed pulley (902) is arranged on the piston rod of the first hydraulic cylinder (901), the second fixed pulley (903) is arranged on the end of the slide rack (3) away from the slide table (2), one end of the connecting chain (904) is fixedly connected to the end of the slide rack (3) away from the slide table (2), the other end of the connecting chain (904) passes through the first fixed pulley (902) and the second fixed pulley (903) and is fixedly connected to the cylinder body of the stamping hydraulic cylinder (4).

3. A train car door reshaping device as defined in claim 1, wherein: The rack (1) is provided with a second hydraulic cylinder (11) for driving the slide table (2) to slide.

4. A train car door reshaping device as defined in claim 1, wherein: The slide rack (3) is rotatably provided with a clamping plate (6) at the end away from the slide table (2), one end of the clamping plate (6) is rotatably connected to the slide rack (3), and the other end of the clamping plate (6) can be rotatably close to or away from the slide table (2).

5. A train car door reshaping device as defined in claim 4, wherein: The slide rack (3) is provided with a third hydraulic cylinder (12) for driving the clamping plate (6) to rotate.

6. A train car door reshaping device as defined in claim 1, wherein: The stamping head (5) comprises a fixed disc (501) and a sliding plate (502), the fixed disc (501) is fixedly connected to the piston rod of the stamping hydraulic cylinder (4), the sliding plate (502) is arranged on the fixed disc (501) in a sliding manner along the radial direction of the stamping head (5), one end of the connecting plug rod (1901) away from the connecting rod sleeve (1902) is fixedly connected to the sliding plate (502), and the depths of the self-locking grooves (14) gradually increase in the direction in which the piston rod of the stamping hydraulic cylinder (4) extends.

7. A train car door reshaping device as defined in claim 6, wherein: The side wall of the self-locking block (16) is provided with a first shifting block (23), the first shifting block (23) penetrates the sliding frame (15) and extends to the outside, the side wall of the second wedge-shaped block (20) is provided with a second shifting block (24), and the second shifting block (24) penetrates the connecting rod sleeve (1902) and extends to the outside.

8. A train car door reshaping device as defined in claim 4, wherein: The clamping plate (6) is provided with a first abutting block (7) at the end away from the slide rack (3), the slide table (2) is provided with a second abutting block (8) at the end away from the slide rack (3), and the first abutting block (7) and the second abutting block (8) are oppositely arranged.

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