Railway track tamping machine

Abstract

A railway track tamping machine comprises a lifting device arranged on a vehicle frame in parallel, a mounting frame arranged on the lifting device through a limiting rod and a tamping device arranged on the mounting frame and used for tamping railway ballasts. The mounting frame comprises a connecting plate arranged on the limiting rod and vertical plate sets arranged on the bottom faces of the two ends of the connecting plate, and transverse plates are symmetrically arranged on the vertical plates of the vertical plate sets with respect to the longitudinal center of the vertical plates of the vertical plate sets. The tamping device comprises pickaxe arms rotationally arranged on the transverse plates, pickaxe heads are arranged at the bottom ends of the pickaxe arms, and vibration machines are arranged between the adjacent pickaxe arms. A ballast poking assembly is arranged on the mounting frame and comprises telescopic devices arranged on the vertical plate, a second protection plate is arranged on the first telescopic device, and second pickaxe claws are distributed on the bottom face of the second protection plate. By arranging the ballast poking assembly, in the process that the tamping device tamps the railway ballasts, the ballast poking assembly can poke the railway ballasts on the two sides of a ballast bed to the two sides of a sleeper, so that the vacancy of the railway ballasts on the two sides of the sleeper is supplemented, time and labor are saved, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the field of rail transit, and particularly relates to a railway track tamping machine. Background Art

[0002] Railway tamping machines are mainly used to consolidate railway ballast beds and improve the stability of tracks. When a train is running, it will impact and vibrate the track. Affected by the frequent vibration load of the train for a long time, problems such as ballast hardening, reduced elasticity, embedding in the subgrade, and ballast loss will occur in the ballast bed. Through tamping operations, the full, uniform, clean, and dense state of the ballast bed can be maintained, and the service life of the ballast bed can be extended. Existing tamping machines insert the tamping device into the ballast of the sleeper and tamp it. However, when the tamping device is inserted into the ballast, the ballast on both sides of the sleeper often sinks and is missing, thus forming grooves, and the ballast at the groove positions on both sides of the sleeper needs to be supplemented later, which reduces the work efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a railway track tamping machine to solve the technical problems raised in the above background art.

[0004] To achieve the above purpose, the specific technical solution of a railway track tamping machine of the present invention is as follows:

[0005] A railway track tamping machine includes a lifting device arranged in parallel on a frame, a mounting frame arranged on the lifting device through a limiting rod, and a tamping device arranged on the mounting frame for tamping the ballast. The mounting frame includes a connecting plate arranged on the limiting rod, a group of vertical plates arranged at the bottom ends of both sides of the connecting plate, and a transverse plate symmetrically arranged with respect to the longitudinal center of each vertical plate in each group of vertical plates. The tamping device includes pick arms rotatably arranged on each transverse plate, a pick head arranged at the bottom end of each pick arm, and a vibrator arranged between adjacent pick arms. A transmission device for driving each pick arm to rotate is arranged on the limiting rod. A ballast shifting assembly is arranged on the mounting frame, and the ballast shifting assembly includes a telescopic device arranged on the vertical plate, a second guard plate arranged on the first telescopic device, and a second pick claw distributed on the bottom surface of the second guard plate.

[0006] Further, the limiting rod and the connecting plate are slidably arranged, and the transmission part includes a limiting ring and a mounting block arranged on the limiting rod, a connecting rod rotatably arranged on each pick arm, and a first spring sleeved on the limiting rod between the connecting plate and the mounting block. The end of the connecting rod relative to the pick arm is rotatably arranged, and the mounting block is located below the limiting ring.

[0007] Further, a limiting component for cooperating with the mounting frame is arranged between the two lifting devices on the frame, and the limiting component includes two adjusting rods arranged in parallel on the bottom surface of the frame, and the bottom ends of the adjusting rods are connected by a baffle.

[0008] Further, the adjusting rod includes a first screw rod disposed on the bottom surface of the vehicle frame, a second screw rod slidably disposed with the baffle plate, and the first screw rod and the second screw rod are connected by a bidirectional internal thread sleeve.

[0009] Further, a support rod is provided on the cross plate, and a first protection plate is provided on the support rod. A plurality of first pick claws are distributed on the bottom surface of the first protection plate, and the second protection plate is slidably disposed with the support rod.

[0010] Further, a compaction assembly is provided on the cross plates disposed on the same side of the vertical plate group. The compaction assembly includes a third hydraulic cylinder slidably disposed on each cross plate. A pressing plate is provided on the bottom surface of the third hydraulic cylinders on the cross plates on the same side of the vertical plate group, and a plurality of third pick claws are distributed on the bottom surface of the pressing plate.

[0011] Further, a sliding groove is formed at the outer end of the pressing plate. A sliding plate is slidably disposed in the sliding groove, and a third spring is provided between the sliding groove and the sliding plate. A through groove is formed through the pressing plate. A limiting block matching with the through groove is provided at the inner end of the sliding plate, and a guide wheel is rotatably provided at the free end of the sliding plate.

[0012] Further, the lifting device and the telescopic device are respectively a first hydraulic cylinder and a second hydraulic cylinder.

[0013] The railway track tamping machine of the present invention has the following advantages:

[0014] 1. By providing the ballast shifting assembly, during the process of tamping the ballast by the tamping device, the ballast shifting assembly can shift the ballast on both sides of the roadbed to both sides of the sleeper, thereby supplementing the vacancies of the ballast on both sides of the sleeper, saving time and effort and improving work efficiency.

[0015] 2. By providing the compaction assembly, the ballast in the grooves on both sides of the sleeper can be further compacted, improving the firmness of the ballast on the roadbed and the stability of the track. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a railway track tamping machine of the present invention;

[0017] Figure 2 is a schematic diagram of the mounting frame, tamping arm and transmission device of the present invention;

[0018] Figure 3 is a schematic diagram of the ballast shifting assembly of the present invention;

[0019] Figure 4 is a schematic diagram of the compaction assembly of the present invention.

[0020] Description of the marks in the figure:

[0021] 1. First hydraulic cylinder; 2. Mounting frame; 201. Connecting plate; 202. Vertical plate; 203. Horizontal plate; 3. Tamping device; 301. Pick arm; 302. Pick head; 4. Transmission device; 401. Limiting ring; 402. Mounting block; 403. Connecting rod; 404. First spring; 5. Vibrator; 6. Support rod; 7. First guard plate; 8. First pick claw; 9. Second hydraulic cylinder; 10. Second guard plate; 11. Second pick claw; 12. Pressure plate; 13. Third pick claw; 14. Limiting rod; 15. Third hydraulic cylinder; 16. Chute; 17. Third spring; 18. Slide plate; 19. Guide wheel; 20. Limiting block; 21. First screw; 22. Bidirectional internal thread sleeve; 23. Second screw; 24. Baffle plate. Detailed implementation mode

[0022] In order to better understand the purpose, structure and function of the present invention, the following further describes in detail a railway track tamping machine of the present invention with reference to the accompanying drawings.

[0023] As Figures 1 to 4 shown, a railway track tamping machine of the present invention includes a lifting device arranged in parallel on a vehicle frame, a mounting frame 2 arranged on the lifting device through a limiting rod 14, and a tamping device 3 arranged on the mounting frame 2 for tamping ballast. According to the needs of railway track maintenance, the lifting device is operated, and the height of the mounting frame 2 and the tamping device 3 arranged on the mounting frame 2 for tamping ballast is adjusted through its telescopic function, so that the tamping device 3 is inserted into the ballast to tamp the ballast. Among them, two lifting devices are arranged in parallel on the vehicle frame. The two lifting devices can evenly divide the gravity of the mounting frame 2 and the tamping device 3, and the use of the two lifting devices can more conveniently drive the mounting frame 2 and the tamping device 3 to work.

[0024] Specifically, the mounting bracket 2 includes a connecting plate 201 provided on the limiting rod 14, and vertical plate groups provided on the bottom surfaces of both ends of the connecting plate 201. Each vertical plate 202 of each vertical plate group is symmetrically provided with a cross plate 203 with its longitudinal center. The tamping device 3 for tamping the ballast includes pick arms 301 rotatably provided on each cross plate 203. A vibrator 5 is provided between adjacent pick arms 301. Pick heads 302 are provided at the bottom ends of each pick arm 301. The vibrator 5 drives the pick heads 302 to vibrate through the pick arms 301. After the pick heads 302 are inserted into the ballast, the pick heads 302 will vibrate the ballast, thereby reducing the ballast gap and improving the compactness of the ballast. Of course, in order to further improve the compactness of the ballast, a transmission device 4 for driving each pick arm 301 to rotate is provided on the limiting rod 14. After the lifting device inserts the tamping device 3 on the mounting bracket 2 into the ballast through the limiting rod 14, the transmission device 4 drives the pick arms 301 on each cross plate 203 to rotate through the limiting rod 14. The pick heads 302 at the bottom ends of the pick arms 301 then perform tamping operations on the inserted ballast. Through the rotation and impact effects, the ballast is made more compact, improving the stability of the track. At the same time, the vibrator 5 located between adjacent pick arms 301 operates to generate shock waves, further promoting the densification of the ballast. Among them, the vibrator 5 is arranged between adjacent pick arms 301, and the vibration force can be directly transmitted to the pick heads 302 through the pick arms 301, making the vibration efficiency of the pick heads 302 stronger, and further improving the vibration effect of the pick heads 302 on the ballast, enabling the ballast to be held more quickly and improving the work efficiency.

[0025] Such as Figure 2As shown, the limiting rod 14 is slidably arranged with the connecting plate 201, and the limiting rod 14 is located between the vertical plate 202 groups. The transmission part for driving the pick arm 301 includes a limiting ring 401 and a mounting block 402 arranged on the limiting rod 14, and the mounting block 402 is located below the limiting ring 401. The connecting rod 403 rotatably arranged on each pick arm 301 is rotatably arranged between one end of the connecting rod 403 relative to the pick arm 301 and the mounting block 402, and a first spring 404 is sleeved on the limiting rod 14 between the connecting plate 201 and the mounting block 402. When the limiting rod 14 moves downward, the first spring 404 pushes the mounting frame 2 and the tamping device 3 on the mounting frame 2 downward, and the pick head 302 in the tamping device 3 will be inserted into the ballast and stop when the mounting frame 2 contacts the sleeper. After that, the limiting rod 14 continues to descend through the lifting device, the limiting rod 14 will drive the mounting block 402 to compress the first spring 404 and the mounting block 402 will drive the pick arm 301 to rotate through the connecting rod 403, so as to hold the ballast under the sleeper tightly, and the vibration generated by the vibrator 5 will also be transmitted to the pick head 302 through the pick arm 301 to vibrate the ballast held by the pick head 302, making the ballast gather more tightly. It should be noted that a long hole is formed at one end of the connecting rod 403 corresponding to the pick arm 301, and the connecting shaft at the upper end of the pick arm 301 is movably arranged in the long hole. In this way, when the vibrator 5 vibrates, excessive restriction of the connecting rod 403 on the pick arm 301 can be reduced, so that the vibration feeling of the pick arm 301 is stronger.

[0026] In order to adjust the insertion depth of the pick head 302 into the ballast, a limiting component cooperating with the mounting frame 2 is arranged on the vehicle frame between the two lifting devices. The limiting component consists of two adjusting rods arranged parallel to the bottom surface of the vehicle frame and a baffle 24 for connecting the bottom ends of the adjusting rods. Among them, the two adjusting rods and the baffle 24 form a U shape, and by adjusting the adjusting rods, the distance between the connecting plate 201 and the vehicle frame can be adjusted. When it is necessary to adjust the insertion depth of the pick head 302 into the ballast, the operator can adjust the baffle 24 to an appropriate height through the adjusting rods. When the mounting frame 2 descends and the connecting plate 201 of the mounting frame 2 contacts the baffle 24, the insertion depth of the pick head 302 into the ballast will also stop. Specifically, the adjusting rod includes a first screw rod 21 arranged on the bottom surface of the vehicle frame, a second screw rod 23 arranged on the baffle 24, and the first screw rod 21 and the second screw rod 23 are connected by a bidirectional internal thread sleeve 22. When adjusting the distance between the connecting plate 201 and the vehicle frame, the bidirectional internal thread sleeve 22 can be rotated, so that the first screw rod 21 and the second screw rod 23 move relatively away or relatively close to each other, so as to realize the adjustment of the distance between the connecting plate 201 and the vehicle frame. The operator only needs to rotate one component (i.e., the bidirectional internal thread sleeve 22) to complete the depth adjustment, without complex mechanical operations or additional tool assistance, reducing the operation difficulty and labor intensity.

[0027] In order to supplement the ballast grooves on both sides of the sleeper, a ballast shifting component is provided on the mounting frame 2. Through the ballast shifting component, the ballast on both sides of the ballast bed can be shifted towards both sides of the sleeper, thereby supplementing the vacancies of the ballast on both sides of the sleeper, saving the process of refilling the ballast at the groove positions on both sides of the sleeper, saving time and effort and improving work efficiency. Specifically, the ballast shifting component includes a telescopic device provided on the vertical plate 202. A second guard plate 10 is provided on the first telescopic device, and a second pick claw 11 is distributed on the bottom surface of the second guard plate 10. When the tamping device 3 descends, the mounting frame 2 drives the second guard plate 10 and the second pick claw 11 to insert into the ballast through the telescopic device. And when the tamping device 3 tampers the ballast, the telescopic device starts to work, and through the second guard plate 10 and the second pick claw 11, the ballast on both sides of the ballast bed is pulled to the grooves on both sides of the sleeper for filling.

[0028] When the lifting device moves upward, the limit rod 14 drives the mounting block 402 to move upward, and the first spring 404 starts to stretch. And the mounting block 402 drives the pick arm 301 and the pick head 302 to rotate to the initial position through the connecting rod 403. At the same time, the limit rod 14 drives the mounting frame 2 and the tamping device 3 to rise to the initial position. Of course, the telescopic device also drives the second guard plate 10 and the second pick claw 11 to move to the initial position.

[0029] As Figure 3 shown, a support rod 6 is provided on the cross plate 203, and a first guard plate 7 is provided on the support rod 6. A plurality of first pick claws 8 are distributed on the bottom surface of the first guard plate 7, and the second guard plate 10 is slidably arranged with the support rod 6. During the descent of the mounting frame 2, the first pick claws 8 on the first guard plate 7 also insert into the ballast. The insertion of the first pick claws 8 can prevent the ballast on both sides of the ballast bed from becoming loose due to vibration when the pick head 302 vibrates, further improving the compactness and safety of the ballast on the ballast bed. In the above, the lifting device and the telescopic device are respectively the first hydraulic cylinder 1 and the second hydraulic cylinder 9.

[0030] Preferably, a compaction assembly is provided on the cross plates 203 arranged on the same side of the vertical plates 202. By providing the compaction assembly, the ballast in the grooves on both sides of the sleeper can be further compacted, improving the firmness of the ballast on the roadbed and the stability of the track. Specifically, the compaction assembly includes a third hydraulic cylinder 15 slidably arranged on each cross plate 203. A pressing plate 12 is provided on the bottom surface of the third hydraulic cylinders 15 on the cross plates 203 arranged on the same side of the vertical plates 202, and third pick claws 13 are distributed on the bottom surface of the pressing plate 12. When compaction operation is required for the ballast in the grooves on both sides of the sleeper, the ballast pushing assembly will push the ballast on both sides of the roadbed into the grooves. Then, the third hydraulic cylinder 15 is started. The third hydraulic cylinder 15 pushes the pressing plate 12 to move downward. The third pick claws 13 can be inserted into the ballast, and the pressing plate 12 presses on the ballast. The third pick claws 13 generate vibrations through the cross plates 203 and pick arms 301, and vibrate and compact the ballast, improving the compaction effect. With the continuous action of the hydraulic cylinder, the pressing plate 12 applies sufficient pressure to make the ballast more tightly fill the ballast grooves on both sides of the sleeper.

[0031] As a further improvement, a chute 16 is opened at the outer end of the pressing plate 12. A sliding plate 18 is slidably arranged in the chute 16, and a third spring 17 is provided between the chute 16 and the sliding plate 18. And a through groove is opened on the pressing plate 12. A limiting block 20 matched with the through groove is provided at the inner end of the sliding plate 18. Under the action of the third spring 17 and the limiting block 20, the sliding plate 18 can expand and contract on the pressing plate 12. As Figure 4 shown, a guide wheel 19 is rotatably arranged at the free end of the sliding plate 18. During the downward movement of the pressing plate 12, the guide wheel 19 will contact the outer surface of the adjacent sleeper. And as the pressing plate 12 descends, the guide wheel 19 will drive the sliding plate 18 to move inward into the pressing plate 12 along the inclined surface of the sleeper, and the sliding plate 18 will compress the third spring 17. The setting of the sliding plate 18 can increase the contact area of the pressing plate 12 with the ballast, improving the pressing effect of the pressing plate 12 on the ballast. Among them, the design of the guide wheel 19 reduces the frictional resistance between the sliding plate 18 and the sleeper, making the sliding plate 18 move more smoothly and efficiently.

[0032] Usage method: When tamping the ballast under the sleeper, start the first hydraulic cylinder 1 and the vibrator 5. The first hydraulic cylinder 1 drives the tamping device 3 on the mounting frame 2 to descend through the limit rod 14. When the connecting plate 201 on the mounting frame 2 contacts the baffle 24, the mounting frame 2 stops descending. At this time, the pick head 302 in the tamping device 3 has been inserted into the ballast. Then, the first hydraulic cylinder 1 drives the pick arm 301 and the pick head 302 to rotate through the limit rod 14 and the connecting rod 403 on the mounting block 402. The vibrator 5 drives the pick head 302 to vibrate through the pick arm 301. The pick head 302 vibrates and compresses the ballast, thereby improving the compactness and stability of the ballast under the sleeper. Similarly, when the first hydraulic cylinder 1 drives the limit rod 14 to rise, the mounting block 402 on the limit rod 14 will also rise, and the mounting block 402 will also drive the pick arm 301 and the pick head 302 to move to the initial position through the connecting rod 403 until they move to the initial position for continued use.

[0033] It can be understood that the present invention is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A railway track tamping machine, characterized in that: It comprises a lifting device arranged parallel to a vehicle frame, a mounting frame (2) arranged on the lifting device via a limiting rod (14), and a tamping device (3) arranged on the mounting frame (2) for tamping ballast; The mounting frame (2) comprises a connecting plate (201) arranged on a limiting rod (14), and a group of vertical plates (202) arranged on the bottom surfaces of both ends of the connecting plate (201), and each vertical plate (202) of each group of vertical plates (202) is symmetrically provided with a horizontal plate (203) about its longitudinal center; The tamping device (3) comprises a pickaxe arm (301) rotatably arranged on each horizontal plate (203), a pickaxe head (302) is arranged at the bottom end of each pickaxe arm (301), and a vibrator (5) is arranged between adjacent pickaxe arms (301); A transmission device (4) is provided on the limiting rod (14) for driving each pickaxe arm (301) to rotate; A ballast-plowing assembly is arranged on the mounting frame (2), and the ballast-plowing assembly comprises a telescopic device arranged on the vertical plate (202), a second guard plate (10) is arranged on the first telescopic device, and a second pick claw (11) is distributed on the bottom surface of the second guard plate (10).

2. A railway track tamping machine according to claim 1, characterized in that: The limiting rod (14) and the connecting plate (201) are slidably arranged, and the transmission part comprises a limiting ring (401) and a mounting block (402) arranged on the limiting rod (14), and a connecting rod (403) arranged on each pickaxe arm (301) is rotated, and a first spring (404) is sleeved on the limiting rod (14) between the connecting plate (201) and the mounting block (402); The connecting rod (403) is rotatably arranged between one end of the pickaxe arm (301) and the mounting block (402), and the mounting block (402) is located below the limiting ring (401).

3. A railway track tamping machine according to claim 2, characterized in that: A position limiting assembly cooperating with the mounting frame (2) is provided on the frame between the two lifting devices. The position limiting assembly comprises two adjusting rods arranged parallel to the bottom surface of the frame. The bottom ends of the adjusting rods are connected via a baffle (24).

4. A railway track tamping machine according to claim 3, characterized in that: The adjusting rod comprises a first screw rod (21) arranged on the bottom surface of the frame, and a second screw rod (23) slidably arranged with a baffle plate (24), and the first screw rod (21) and the second screw rod (23) are connected via a bidirectional internal thread sleeve (22).

5. A railway track tamping machine according to any one of claims 1 to 4, characterized in that ； The transverse plate (203) is provided with a support rod (6), and a first guard plate (7) is provided on the support rod (6). A plurality of first pick claws (8) are distributed on the bottom surface of the first guard plate (7), and the second guard plate (10) and the support rod (6) are slidably arranged.

6. A railway track tamping machine according to claim 5, characterized in that ； A compacting assembly is provided on the horizontal plate (203) arranged on the same side of the vertical plate (202) group, and the compacting assembly includes a third hydraulic cylinder (15) slidably arranged on each horizontal plate (203), and a pressing plate (12) is provided on the bottom surface of the third hydraulic cylinder (15) on the horizontal plate (203) on the same side of the vertical plate (202) group, and a third pick claw (13) is distributed on the bottom surface of the pressing plate (12).

7. A railway track tamping machine according to claim 6, characterized in that ； The outer end of the pressure plate (12) is provided with a slide groove (16), a slide plate (18) is slidably provided in the slide groove (16), and a third spring (17) is provided between the slide groove (16) and the slide plate (18). A through groove is provided on the pressure plate (12), a limit block (20) cooperating with the through groove is provided at the inner end of the slide plate (18), and a guide wheel (19) is rotatably provided at the free end of the slide plate (18).

8. A railway track tamping machine according to claim 1, characterized in that ； The lifting device and the telescopic device are respectively a first hydraulic cylinder (1) and a second hydraulic cylinder (9).

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