Railway wagon anti-jumping ring recess recovery device and recovery method

Abstract

The invention belongs to the field of railway wagon overhaul, and particularly relates to an anti-jumping ring recess recovery device and method for a railway wagon, and the anti-jumping ring recess recovery device comprises a cabinet and at least two supporting tables arranged at the top end of the cabinet; a telescopic driving structure, a stamping die arranged at the output end of the telescopic driving structure and an anti-jumping ring fixing structure connected with the stamping die are sequentially arranged on the supporting table from front to back, a controller used for controlling the telescopic driving structure is further arranged on the machine cabinet, and a hydraulic station used for supplying energy to the telescopic driving structure is arranged in the machine cabinet. By means of the anti-jumping ring fixing structure, the problem that in the traditional technology, due to the fact that the sunken anti-jumping ring cannot be repaired, the anti-jumping ring is directly scrapped is solved; the labor intensity of operators is reduced, the production efficiency is improved, the matched technological process is clear, the method is easy to master, unified standards and specifications are provided, and standardized operation can be achieved conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field related to railway freight car maintenance, and in particular to a railway freight car anti-jump ring depression recovery device and a recovery method. Background Art

[0002] With the rapid development of the domestic automotive industry and the substantial increase in vehicle production and sales, the demand for commercial vehicle transportation is growing rapidly, necessitating efficient and safe transportation methods to meet the demand for long-distance, large-volume transport of vehicles. As a low-carbon, environmentally friendly mode of transportation, rail transport, with its advantages of high capacity, low cost, energy conservation, and environmental protection, has become a vital component of commercial vehicle transportation. The SQ6 concave-bottom double-decker railway freight car, designed and manufactured in China specifically for the automotive logistics industry, is a highly efficient transport vehicle. It is the mainstay of my country's double-decker vehicle transportation system, used to transport passenger vehicles such as sedans and pickup trucks.

[0003] Since the SQ6 has a double-deck structure, it mainly adopts a ferry structure, which improves the loading and unloading efficiency and safety of the double-deck SQ6 truck. The ferry is a key component connecting the truck. It serves as a temporary ramp for vehicles to enter or exit when loading and unloading. It is located at the end of the truck and can be unfolded or folded, supported by the support arm. In order to make it stable and reliable, an anti-jump ring structure is designed and installed on the support arm. The anti-jump ring withstands a large extrusion force. In recent years, with the increase in new energy vehicles (new energy vehicles generally weigh 10%-30% more than fuel vehicles), the anti-jump ring is squeezed and deformed, resulting in the problem of flattening the outer wall. There is currently no repair case for the deformed anti-jump ring during the inspection and maintenance process. They are all replaced with new ones. Multiple anti-jump rings need to be replaced for each vehicle, which causes great waste. Summary of the Invention

[0004] The present invention aims to provide a device and method for restoring the depression of an anti-jump ring for railway freight cars, so as to solve the problem that there are currently no cases of repairing deformed anti-jump rings during maintenance, and they are all replaced with new ones. Multiple anti-jump rings need to be replaced on each car, which causes great waste.

[0005] To this end, the technical solution adopted by the present invention is: a depression recovery device for an anti-jump ring for a railway freight car, comprising a cabinet and at least two support platforms arranged on the top of the cabinet, wherein a retractable drive structure, a die arranged at the output end of the retractable drive structure, and an anti-jump ring fixing structure connected to the die are arranged on the support platforms in sequence from front to back, and the cabinet is also provided with a controller for controlling the retractable drive structure, a hydraulic station for supplying energy to the retractable drive structure is arranged inside the cabinet, a cavity for placing the anti-jump ring is arranged inside the anti-jump ring fixing structure, and the cabinet is also provided with a protective mechanism and a height adjustment mechanism.

[0006] As a preferred embodiment of the above scheme, the anti-jump ring fixing structure includes an upper mold and a lower mold arranged on the support platform, the upper mold and the lower mold are buckled together to form the cavity for placing the anti-jump ring, the upper mold and the lower mold are connected by two mold locking bolts arranged on the left and right sides, and the support platform is provided with a mold mounting groove for fixing the position of the upper mold and the lower mold, and the mold mounting groove is formed by the mold front block, mold side block, and mold rear block arranged on the left and right sides of the support platform, and openings are left at the front and back.

[0007] It is further preferred that the shape of the cavity is circular, and the rear end is provided with an annular baffle for limiting the anti-jump ring from slipping out of the cavity, the inner diameter of the annular baffle matches the inner diameter of the anti-jump ring, the top end of the die is conical, the tail end is cylindrical, and the maximum shaft diameter is equal to the inner diameter of the anti-jump ring.

[0008] Further preferably, the retractable drive structure includes a hydraulic cylinder arranged on a support platform, a hydraulic cylinder pressure iron arranged above the hydraulic cylinder, and two hydraulic cylinder support feet arranged in front and back for supporting the hydraulic cylinder, the hydraulic cylinder pressure iron and the hydraulic cylinder support feet are connected by pressure iron locking bolts, and the two hydraulic cylinder support feet are respectively aligned with the front and rear ends of the hydraulic cylinder pressure iron.

[0009] Further preferably, the support platform includes a base plate and a tail plate vertically welded to the base plate, the tail end of the hydraulic cylinder rests on the tail plate, and the anti-jump ring fixing structure and the retractable driving structure are both arranged on the base plate.

[0010] Further preferably, a side door for adjusting or maintaining the hydraulic station is provided on one side of the cabinet.

[0011] Further preferably, the hydraulic station is provided with an oil pipe for connecting to the hydraulic cylinder, and the oil pipe passes through the side of the cabinet and is connected to the hydraulic cylinder.

[0012] Further preferably, the protective mechanism includes a fixed plate arranged on the back of the cabinet, a rectangular plate arranged above the fixed plate and a connecting plate connected to the top of the rectangular plate, a protective cover connected to the connecting plate is provided on the top of the cabinet, a rectangular groove for the rectangular plate to slide up and down is provided on the top of the fixed plate, a first motor is provided at the bottom of the fixed plate, the output shaft of the first motor extends into the rectangular groove and is fixedly installed with a first screw, and the top end of the first screw is threadedly connected to a threaded sleeve connected to the rectangular plate.

[0013] It is further preferred that there are two height adjustment mechanisms, which are respectively arranged on the front and rear sides of the cabinet, and the height adjustment mechanism includes a support plate arranged at the bottom of the cabinet, a horizontal plate arranged on the support plate, and two vertical plates arranged at both ends of the horizontal plate, and a rectangular slide is provided on the opposite sides of the two vertical plates, and a lifting plate is slidably installed in the rectangular slide, and a plurality of vertical rods are fixedly installed at the bottom of the lifting plate, and the bottom of the vertical rods is fixedly connected to the support plate, and a second motor is fixedly installed on the top of the horizontal plate, and a second screw is fixedly installed on the output shaft of the second motor, and the second screw is connected to a stabilizing plate through the threaded lifting plate, and a bearing with an inner ring connected to the output end of the second screw is fixedly installed on the stabilizing plate, and the stabilizing plate is fixedly connected to the side wall of the cabinet.

[0014] The present invention also provides a method for restoring a depression of an anti-jump ring for a railway freight car, comprising the following steps:

[0015] Step S1, placing the sunken anti-jump ring: The second motor drives the stabilizing plate to move downward to adjust the height of the cabinet. After adjusting to the appropriate height, the sunken anti-jump ring to be restored is placed in the cavity formed by the upper mold and the lower mold of the anti-jump ring fixing structure. The operator holds the top end of the punch and inserts it into the inside of the sunken anti-jump ring;

[0016] Step S2, restoring the sunken anti-jump ring: operating the controller to control the output end of the hydraulic cylinder of the telescopic drive structure to press against the tail end of the die. The operator releases the die, and the hydraulic cylinder continues to output until the tail end of the die extends into the front end hole of the sunken anti-jump ring. The controller then controls the hydraulic cylinder of the telescopic drive structure to stop outputting.

[0017] Step S3, take out the restored anti-jump ring: operate the controller to control the hydraulic cylinder output end of the retractable drive structure to return to its original position, the operator takes out the die from the rear end hole of the cavity and puts it back to its original position, and takes out the restored anti-jump ring from the front end of the cavity and puts it in the designated position.

[0018] Step S4, dustproofing of the cabinet: After the anti-jump ring is restored, the first motor drives the first screw to rotate, so that the rectangular plate threadedly connected to the first screw drives the connecting plate and the protective cover to move downward, and the protective cover covers the anti-jump ring fixing structure, die, retractable drive structure, support platform and controller above the cabinet.

[0019] The beneficial effects of the present invention are as follows: a retractable driving structure is used to apply controllable pressure, so as to achieve plastic extension rather than fracture of the metal fiber in the recessed part, and the original shape of the anti-jump ring can be accurately restored, solving the problem that the recessed anti-jump ring cannot be repaired and is directly scrapped in the traditional process; the tool structure is simple and easy to operate, ensuring the geometric accuracy of the structure after repair, in line with railway industry standards; avoiding restoration failure caused by deformation deviation; saving time and effort during operation, and low cost; through the split structural design and alternating clamping, the hydraulic device that is not in operation can rest and cool down, which improves the repair efficiency while increasing the service life of the hydraulic device and improving the repair efficiency; the use of the hydraulic system is safe and reliable, with obvious energy saving effect, and can reduce the labor intensity of operators and improve production efficiency. The supporting process flow is clear and the method is easy to master, providing unified standards and specifications, which is convenient for standardized operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the anti-jump ring fixing structure of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the retractable drive structure of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the support platform of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the die of the present invention.

[0025] Figure 6 Schematic diagram of the internal structure of the cavity of the present invention.

[0026] Figure 7 It is a structural schematic diagram of the dust-proof mechanism in the present invention.

[0027] Figure 8 for Figure 7 Schematic diagram of the structure after removing the rectangular plate and connecting plate.

[0028] Figure 9 This is a structural diagram of the dust-proof mechanism with a hollow plate added in the present invention.

[0029] Figure 10 for Figure 9 Schematic diagram of the structure of the hollow plate.

[0030] Figure 11 for Figure 9 Schematic diagram of the structure of the protective cover. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] like Figures 1-11 As shown, a device for recovering the depression of an anti-jump ring for a railway freight car includes a cabinet 6 and at least two support platforms 4 arranged on the left and right sides of the top of the cabinet 6. The support platform 4 includes a base plate 41 and a tail plate 42 vertically welded to the base plate 41. The tail end of the hydraulic cylinder 31 rests on the tail plate 42. The anti-jump ring fixing structure 1 and the retractable driving structure 3 are both arranged on the base plate 41.

[0033] By arranging a tail plate 42 on the bottom plate 41, the connection strength between the bottom plate 41 and the cabinet 6 is enhanced, and deformation is prevented when the bottom plate 41 and the cabinet 6 are welded. The tail end of the hydraulic cylinder 31 is pressed against the bottom plate 41. When the hydraulic cylinder 31 is working, it can resist the reaction force exerted on the hydraulic cylinder 31 by the anti-jump ring fixing structure 1, thereby avoiding the displacement of the hydraulic cylinder 31 and ensuring the effect of the anti-jump ring during the recovery process.

[0034] The support platform 4 is provided with a retractable drive structure 3, a die 2 arranged at the output end of the retractable drive structure 3, and an anti-jump ring fixing structure 1 connected to the die 2 in sequence from front to back. The cabinet 6 is also provided with a controller 5 for controlling the retractable drive structure 3. A hydraulic station 7 for supplying energy to the retractable drive structure 3 is provided inside the cabinet 6. A cavity A for placing the anti-jump ring is provided inside the anti-jump ring fixing structure 1. The cabinet 6 is provided with a protective mechanism and a height adjustment mechanism.

[0035] The controller controls the telescopic driving structure 3 to be telescopic, and drives the punching die 2 to move into the anti-jump ring fixing structure 1, thereby repairing the anti-jump ring to be repaired.

[0036] A side door for adjusting or repairing the hydraulic station 7 is provided on one side of the cabinet 6 .

[0037] The top of the punch die 2 is conical, the tail end is cylindrical, and the maximum shaft diameter is equal to the inner diameter of the anti-jump ring. The conical top end is easier to insert into the anti-jump ring to be repaired, which is convenient for repairing the anti-jump ring.

[0038] The anti-jump ring fixing structure 1 includes an upper mold 11 and a lower mold 12 which are arranged on the support platform 4. The upper mold 11 and the lower mold 12 are buckled together to form a cavity A for placing the anti-jump ring. The upper mold 11 and the lower mold 12 are connected by two mold locking bolts 13 arranged on the left and right sides. The support platform 4 is provided with a mold mounting groove for fixing the position of the upper mold 11 and the lower mold 12. The mold mounting groove is formed by the mold front block 14, the mold side block 16, and the mold rear block 15 arranged on the left and right sides of the support platform 4, and openings are left at the front and back.

[0039] Cavity A is circular in shape, with an annular baffle at the rear end to prevent the anti-jump ring from slipping out of cavity A. The inner diameter of the baffle matches that of the anti-jump ring. The upper and lower molds 11 and 12 are separated to prevent the anti-jump ring from becoming stuck inside the mold after repair. The split design facilitates separation of the upper and lower molds 11 and 12, allowing for removal of the anti-jump ring and subsequent replacement if the mold is damaged.

[0040] The mold front block 14, the mold rear block 15, the mold side block 16, and the hydraulic cylinder support foot 33 are all welded to the upper surface of the base plate 41, the support platform 4 is welded to the upper surface of the cabinet 6, and the controller 5 is installed on the upper surface of the cabinet 6. Ensure that the anti-jump ring fixing structure 1 is connected stably. The mold side block 16, the mold front block 14, and the mold rear block 15 are welded. When the hydraulic cylinder 31 is working, the output end exerts a force on the anti-jump ring in the cavity A of the upper mold 11 and the lower mold 12 through the die 2. The stability and strength of the mold mounting groove are improved by welding to ensure that the mold mounting groove can withstand the force of the hydraulic cylinder 31 and will not cause the position of the upper mold 11 and the lower mold 12 to shift during operation.

[0041] The retractable drive structure 3 includes a hydraulic cylinder 31 mounted on a support platform 4, a hydraulic cylinder weight 32 positioned above the hydraulic cylinder 31, and two hydraulic cylinder legs 33 positioned at the front and rear ends to support the hydraulic cylinder 31. The hydraulic cylinder weight 32 and the hydraulic cylinder legs 33 are connected by weight locking bolts 34. The two hydraulic cylinder legs 33 are aligned with the front and rear ends of the hydraulic cylinder weight 32, respectively. The diameter of the output end of the hydraulic cylinder 31 is smaller than the diameter of the rear end of the die 2.

[0042] The hydraulic cylinder 31 is fixed by the hydraulic cylinder weight 32 and the hydraulic cylinder support foot 33 to prevent displacement during the operation of the hydraulic cylinder 31, which affects the repair work of the anti-jump ring. The hydraulic cylinder weight 32 and the hydraulic cylinder support foot 33 are connected by the weight locking bolt 34 to facilitate the disassembly of the hydraulic cylinder weight 32, thereby facilitating the inspection and maintenance of the hydraulic cylinder 31. The hydraulic cylinder support foot 33 is aligned with the front and rear ends of the hydraulic cylinder weight 32 to ensure that the stiffness between the hydraulic cylinder weight 32 and the hydraulic cylinder support foot 33 is maximized.

[0043] The hydraulic station 7 is equipped with oil pipes (not shown) for connecting to the hydraulic cylinders 31. The oil pipes extend from the side of the cabinet 6 and connect to the hydraulic cylinders 31. There are two oil pipes, one for oil inlet and one for oil outlet, which are connected to the two hydraulic cylinders 31. The oil pipes transport the hydraulic oil in the hydraulic station 7 to the hydraulic cylinders 31 to ensure their normal operation.

[0044] The controller is connected to the telescopic drive structure 3 through a signal connection or an electrical connection (this is the existing technology and will not be repeated here). The controller is provided with forward, backward, and emergency stop buttons, which are used to control the forward, backward, and emergency stop of the hydraulic cylinder 31 in the telescopic drive structure 3.

[0045] The protective mechanism includes a fixed plate 60 arranged on the back of the cabinet 6, a rectangular plate 62 arranged above the fixed plate 60 and a connecting plate 63 connected to the top of the rectangular plate 62. A protective cover 64 connected to the connecting plate 63 is arranged on the top of the cabinet 6. A rectangular groove 61 for the rectangular plate 62 to slide up and down is opened on the top of the fixed plate 60. A first motor 69 is arranged at the bottom of the fixed plate 60. The output shaft of the first motor 69 extends into the rectangular groove 61 and is fixedly installed with a first screw 70. The top end of the first screw 70 is threadedly connected to a threaded sleeve connected to the rectangular plate 62.

[0046] After use, the first motor 69 drives the first screw 70 to rotate, so that the threaded sleeve threadedly connected to the first screw 70 drives the rectangular plate 62 to move downward, thereby driving the connecting plate 63 and the protective cover 64 to move downward, and the protective cover 64 covers the anti-jump ring fixing structure 1, the die 2, the retractable drive structure 3, the support platform 4 and the controller 5 to achieve the purpose of dust prevention.

[0047] There are two height adjustment mechanisms, which are respectively arranged on the front and rear sides of the cabinet 6. The height adjustment mechanism includes a support plate 55 arranged at the bottom of the cabinet 6, a horizontal plate 58 arranged on the support plate 55, and two vertical plates 51 arranged at both ends of the horizontal plate 58. A rectangular slide 52 is provided on the opposite side of the two vertical plates 51. A lifting plate 53 is slidably installed in the rectangular slide 52. A plurality of vertical rods 54 are fixedly installed at the bottom of the lifting plate 53. The bottom of the vertical rod 54 is fixedly connected to the support plate 55. A second motor 56 is fixedly installed on the top of the horizontal plate 58. A second screw 57 is fixedly installed on the output shaft of the second motor 56. The second screw 57 is connected to a stabilizing plate 59 through the threaded lifting plate 53. A bearing with an inner ring connected to the output end of the second screw 57 is fixedly installed on the stabilizing plate 59. The stabilizing plate 59 is fixedly connected to the side wall of the cabinet 6.

[0048] The second motor 56 drives the second screw 57 to rotate, so that the lifting plate 53 threadedly connected to the second screw 57 moves downward, and the lifting plate 53 drives the supporting plate 55 to move downward through the vertical rod 54, thereby propping up the cabinet 6. The height of the cabinet 6 is adjusted to a height suitable for the working of the staff, which is convenient for repairing the anti-jump ring and can be used by people of different heights.

[0049] The present invention also provides a method for restoring a depression of an anti-jump ring for a railway freight car, comprising the following steps:

[0050] Step S1, placing the recessed anti-jump ring: the second motor 56 drives the stabilizing plate 59 to move downward, thereby adjusting the height of the cabinet 6. After adjusting to the appropriate height, the recessed anti-jump ring to be restored is placed in the cavity A formed by the upper mold 11 and the lower mold 12 of the anti-jump ring fixing structure 1. The operator holds the punch 2 and inserts the top end into the recessed anti-jump ring; the operator holds the punch 2 to facilitate positioning of the anti-jump ring.

[0051] Step S2, restore the sunken anti-jump ring: operate the controller 5 to control the output end of the hydraulic cylinder 31 of the retractable driving structure 3 to press against the tail end of the die 2. The operator releases the die 2, and the hydraulic cylinder 31 continues to output until the tail end of the die 2 extends into the front end hole of the sunken anti-jump ring. The hydraulic cylinder 31 of the retractable driving structure 3 is controlled by the controller 5 to stop output; the tail end of the die 2 extends into the front end hole of the anti-jump ring. At this time, the repair is completed, and the die 2 can completely pass through the anti-jump ring, ensuring the accuracy and quality of the anti-jump ring repair.

[0052] Step S3, Removing the Restored Anti-jump Ring: The controller 5 controls the output end of the hydraulic cylinder 31 of the retractable drive structure 3 to return to its original position. The operator removes the punch 2 from the rear end hole of the cavity A and returns it to its original position. The restored anti-jump ring is removed from the front end of the cavity A and placed in a designated position. The punch 2 is inserted from the front end hole of the cavity A and removed from the rear end hole to ensure the quality of the repair of the anti-jump ring. The punch 2 and the hydraulic cylinder 31 are designed to be separate to prevent the top of the punch 2 from scratching the inner wall of the anti-jump ring when the hydraulic cylinder 31 returns to its original position at the output end, thereby preventing the repaired anti-jump ring from being damaged.

[0053] Step S4, dust prevention of cabinet 6: After the anti-jump ring is restored, the first motor 69 drives the first screw 70 to rotate, so that the rectangular plate 62 threadedly connected to the first screw 70 drives the connecting plate 63 and the protective cover 64 to move downward, and the protective cover 64 covers the anti-jump ring fixing structure 1, die 2, retractable drive structure 3, support platform 4 and controller above the cabinet 6 to achieve the purpose of dust prevention.

[0054] At least two support platforms 4 are arranged above the cabinet 6. The anti-jump ring is repaired through the retractable drive structure 3 on the support platform 4. During the repair process, the staff operates one controller at a time to repair the anti-jump ring. Multiple devices are used alternately to avoid the hydraulic cylinder 31 from working continuously for a long time. The unused hydraulic cylinder 31 has time to reduce the temperature, thereby extending the service life of the hydraulic cylinder 31.

[0055] A hydraulic device applies controlled pressure to plastically expand the metal fibers in the depressed area rather than fracture them, accurately restoring the anti-jump ring to its original shape. This solves the problem of traditional processes where sunken anti-jump rings cannot be repaired and are directly scrapped. This device achieves functional repair through mechanical optimization, quickly restoring the sunken anti-jump rings on the crossover arm of an SQ6 freight train. This improves manufacturing efficiency and provides a clear process flow, making it easier for workshop management and personnel to master.

[0056] The tool has a simple structure and is easy to operate. The anti-jump ring is placed in the upper and lower molds 12. After the molds are tightened, a contoured mold and multi-point pressure compensation technology are used to tightly wrap the anti-jump ring. The dent is lifted and squeezed by the die 2 to ensure the geometric accuracy of the repaired structure and avoid restoration failure caused by deformation deviation. It solves the technical bottleneck of "dent repair and cracking" in traditional processes, has low cost, and meets railway industry standards. The hydraulic device and the die 2 adopt a split structure, and multiple groups of devices are set up for alternate clamping. The hydraulic device that is not in use can rest and cool down, which improves the repair efficiency while increasing the service life of the hydraulic device.

[0057] The use of hydraulic systems is safe and reliable, with significant energy-saving effects. It can also reduce the labor intensity of operators, reduce the number of employees, improve production efficiency, and save labor and energy costs. The supporting process flow is clear, the methods are easy to master, and unified standards and specifications are provided. Operators only need simple training to master them, which facilitates the implementation of standardized operations.

[0058] A mounting port 65 can also be opened at the top of the protective cover 64, and a hollow plate 66 is fixedly installed in the mounting port 65. A plurality of blowing holes 68 are provided at the bottom of the hollow plate 66. A fan 67 is fixedly installed on the top of the hollow plate 66. An air channel is provided inside the hollow plate 66 and connected to the fan 67. After use, the fan 67 is started, and the fan 67 blows air into the hollow plate 66. The gas blows from the plurality of blowing holes 68 to the top of the cabinet 6 to blow away dust and impurities. After the dust and impurities are blown away, the protective cover 64 is driven by the first motor to cover the anti-jump ring fixed structure 1, the die 2, the retractable drive structure 3, the support platform 4 and the controller 5, so that the dust prevention effect is better.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A railway freight car anti-jump ring depression recovery device, characterized by: The invention comprises a cabinet (6) and at least two support platforms (4) arranged at the top of the cabinet (6); a telescopic drive structure (3), a punching die (2) arranged at the output end of the telescopic drive structure (3), and an anti-jump ring fixing structure (1) connected to the punching die (2) are arranged on the support platform (4) in sequence from front to back; a controller (5) for controlling the telescopic drive structure (3) is also arranged on the cabinet (6); a hydraulic station (7) for supplying energy to the telescopic drive structure (3) is arranged inside the cabinet (6); a cavity (A) for placing the anti-jump ring is arranged inside the anti-jump ring fixing structure (1); and a protective mechanism and a height adjustment mechanism are also arranged on the cabinet (6).

2. The anti-jump ring depression recovery device for railway freight cars according to claim 1, characterized in that: The anti-jump ring fixing structure (1) comprises an upper mold (11) and a lower mold (12) which are arranged on a support platform (4) from top to bottom. The upper mold (11) and the lower mold (12) are buckled together to form the cavity (A) for placing the anti-jump ring. The upper mold (11) and the lower mold (12) are connected by two mold locking bolts (13) arranged on the left and right sides. The support platform (4) is provided with a mold mounting groove for fixing the position of the upper mold (11) and the lower mold (12). The mold mounting groove is formed by a mold front block (14), a mold side block (16), and a mold rear block (15) arranged on the left and right sides of the support platform (4), and has openings at the front and back.

3. The anti-jump ring depression recovery device for railway freight cars according to claim 2, characterized in that: The cavity (A) is circular in shape, and an annular baffle is provided at the rear end for limiting the anti-jump ring from slipping out of the cavity (A). The inner diameter of the annular baffle matches the inner diameter of the anti-jump ring. The top end of the punch (2) is conical, the tail end is cylindrical, and the maximum shaft diameter is equal to the inner diameter of the anti-jump ring.

4. The anti-jump ring depression recovery device for railway freight cars according to claim 3, characterized in that: The telescopic drive structure (3) comprises a hydraulic cylinder (31) arranged on a support platform (4), a hydraulic cylinder pressure iron (32) arranged above the hydraulic cylinder (31), and two hydraulic cylinder support feet (33) arranged at the front and rear for supporting the hydraulic cylinder (31); the hydraulic cylinder pressure iron (32) and the hydraulic cylinder support feet (33) are connected via pressure iron locking bolts (34); and the two hydraulic cylinder support feet (33) are respectively aligned with the front and rear ends of the hydraulic cylinder pressure iron (32).

5. The anti-jump ring depression recovery device for railway freight cars according to claim 4, characterized in that: The support platform (4) comprises a base plate (41) and a tail plate (42) vertically welded to the base plate (41); the tail end of the hydraulic cylinder (31) abuts against the tail plate (42); and the anti-jump ring fixing structure (1) and the telescopic driving structure (3) are both arranged on the base plate (41).

6. The anti-jump ring depression recovery device for railway freight cars according to claim 1, characterized in that: A side door for adjusting or repairing the hydraulic station (7) is provided on one side of the cabinet (6).

7. The anti-jump ring depression recovery device for railway freight cars according to claim 5, characterized in that: The hydraulic station (7) is provided with an oil pipe for connecting to the hydraulic cylinder (31), and the oil pipe passes through the side of the cabinet (6) and is connected to the hydraulic cylinder (31).

8. The anti-jump ring depression recovery device for railway freight cars according to claim 5, characterized in that: The protective mechanism comprises a fixing plate (60) arranged on the back of the cabinet (6), a rectangular plate (62) arranged above the fixing plate (60), and a connecting plate (63) connected to the top of the rectangular plate (62); a protective cover (64) connected to the connecting plate (63) is arranged on the top of the cabinet (6); a rectangular groove (61) for the rectangular plate (62) to slide up and down is opened on the top of the fixing plate (60); a first motor (69) is arranged at the bottom of the fixing plate (60); an output shaft of the first motor (69) extends into the rectangular groove (61) and is fixedly installed with a first screw (70); the top end of the first screw (70) is threadedly connected to a threaded sleeve (70) connected to the rectangular plate (62).

9. The anti-jump ring depression recovery device for railway freight cars according to claim 5, characterized in that: The number of the height adjustment mechanisms is two, which are respectively arranged on the front and rear sides of the cabinet (6). The height adjustment mechanisms include a support plate (55) arranged at the bottom of the cabinet (6), a horizontal plate (58) arranged on the support plate (55), and two vertical plates (51) arranged at both ends of the horizontal plate (58). A rectangular slide groove (52) is provided on the opposite side of the two vertical plates (51). A lifting plate (53) is slidably installed in the rectangular slide groove (52). A plurality of vertical rods (54) are fixedly installed at the bottom of the lifting plate (53). ), the bottom of the vertical rod (54) is fixedly connected to the support plate (55), the top of the horizontal plate (58) is fixedly mounted with a second motor (56), the output shaft of the second motor (56) is fixedly mounted with a second screw (57), the second screw (57) is connected to a stabilizing plate (59) through a threaded lifting plate (53), the stabilizing plate (59) is fixedly mounted with a bearing whose inner ring is connected to the output end of the second screw (57), and the stabilizing plate (59) is fixedly connected to the side wall of the cabinet (6).

10. A method for restoring a depression of an anti-jump ring for a railway freight car, characterized in that: The invention relates to a railway freight car anti-jump ring depression recovery device according to any one of claims 5, 7 to 9, comprising the following steps: Step S1, placing the concave anti-jump ring: the second motor (56) drives the stabilizing plate (59) to move downward, thereby adjusting the height of the cabinet (6). After adjusting to a suitable height, the concave anti-jump ring to be restored is placed in the cavity (A) formed by the upper mold (11) and the lower mold (12) of the anti-jump ring fixing structure (1). The operator holds the punch (2) and inserts the top end into the concave anti-jump ring; Step S2, restoring the sunken anti-jump ring: operating the controller (5) to control the output end of the hydraulic cylinder (31) of the telescopic driving structure (3) to press against the tail end of the punching die (2), the operator releases the punching die (2), and the hydraulic cylinder (31) continues to output until the tail end of the punching die (2) extends into the front end hole of the sunken anti-jump ring, and then the hydraulic cylinder (31) of the telescopic driving structure (3) is controlled by the controller (5) to stop outputting; Step S3, taking out the restored anti-jump ring: the operating controller (5) controls the output end of the hydraulic cylinder (31) of the telescopic driving structure (3) to return to the original position, the operator takes out the punching die (2) from the rear end hole of the cavity (A) and puts it back to its original position, and takes out the restored anti-jump ring from the front end of the cavity (A) and puts it into the designated position. Step S4, dustproofing of the cabinet (6): After the anti-jump ring is restored, the first motor (69) drives the first screw (70) to rotate, so that the rectangular plate (62) threadedly connected to the first screw (70) drives the connecting plate (63) and the protective cover (64) to move downward, and the protective cover (64) covers the anti-jump ring fixing structure (1), the die (2), the retractable drive structure (3), the support platform (4) and the controller above the cabinet (6).

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