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CN-224228998-U - Tamping cylinder structure for tamping device

CN224228998UCN 224228998 UCN224228998 UCN 224228998UCN-224228998-U

Abstract

The utility model relates to the technical field of tamping tools, in particular to a tamping cylinder structure for a tamping device, which comprises a cylinder pipe, a gasket sealing sleeve, a cylinder cover and a piston connecting rod, wherein the cylinder pipe forms a main body supporting structure of the tamping cylinder, the cylinder cover is fixedly connected to one end of the cylinder pipe and is matched with the cylinder pipe to form a closed cylinder chamber, the sealing sleeve is fixedly connected to the connecting part of the cylinder cover and the cylinder pipe and the end part of the cylinder pipe, the sealing sleeve comprises a guide sleeve, a Style seal and a dust ring which are coaxially sleeved, one end of the piston connecting rod is slidably connected in the cylinder pipe, the other end of the piston connecting rod extends to the outside of the cylinder pipe, and the gasket is fixedly connected between the cylinder cover and the cylinder pipe. The utility model adopts the sealing sleeve member with a multi-layer sealing structure to replace the traditional single-layer O-shaped ring, enhances the sealing performance of the connecting part of the cylinder cover and the cylinder pipe and the end part of the cylinder pipe, prevents dust and coal dust from invading, and delays the aging of the sealing.

Inventors

  • LIU SHULIANG
  • GONG PENG
  • LI JIUGUO

Assignees

  • 湖南阡陌轨道设备有限公司

Dates

Publication Date
20260512
Application Date
20250701

Claims (8)

  1. 1. A tamping cylinder structure for a tamping device, characterized by comprising: A cylinder tube (2); The cylinder cover (8) is fixedly connected to one end of the cylinder pipe (2) and is matched with the cylinder pipe (2) to form a closed cylinder chamber; The sealing sleeve (7) is fixedly connected to the connecting part of the cylinder cover (8) and the cylinder pipe (2) and the end part of the cylinder pipe (2), and the sealing sleeve (7) comprises a guide sleeve, a Style seal and a dust ring which are coaxially sleeved; A piston connecting rod (9), one end of which is connected in the cylinder tube (2) in a sliding way, and the other end of which extends to the outside of the cylinder tube (2); And the gasket (6) is fixedly connected between the cylinder cover (8) and the cylinder tube (2).
  2. 2. The tamping cylinder structure for a tamping device according to claim 1, further comprising a reverse pin (3), wherein the reverse pin (3) is fixedly connected to a positioning hole of the cylinder tube (2).
  3. 3. The tamping cylinder structure for a tamping device according to claim 1, further comprising a castellated nut (4), the castellated nut (4) being threadedly connected to an end threaded section of the piston connecting rod (9).
  4. 4. The tamping cylinder structure for a tamping device according to claim 1, further comprising a rubber damper (1), wherein the rubber damper (1) is fixedly connected to an end of the cylinder tube (2).
  5. 5. The tamping cylinder structure for a tamping device according to claim 1, characterized by further comprising a first slide bearing (10) and two second slide bearings (13), wherein: the first sliding bearing (10) is sleeved on the matching section of the piston connecting rod (9) and the cylinder cover (8) in a sliding manner; The second sliding bearing (13) is sleeved on the end connecting section of the piston connecting rod (9) in a sliding mode.
  6. 6. The tamping cylinder structure for a tamping device according to claim 1, further comprising a spring washer (11), wherein the spring washer (11) is sleeved on a screw portion of the hexagon socket head cap screw (12).
  7. 7. The tamping cylinder structure for a tamping device according to claim 1, characterized in that the cylinder tube (2) is fixedly connected with the cylinder head (8) by a plurality of hexagon socket head cap bolts (12).
  8. 8. The tamping cylinder structure for the tamping device according to claim 1, characterized in that a hinge seat is arranged at the end part of the piston connecting rod (9), and the hinge seat is rotatably connected with a tamping arm through a pin shaft.

Description

Tamping cylinder structure for tamping device Technical Field The utility model relates to the technical field of tamping machines, in particular to a tamping cylinder structure for a tamping device. Background The tamping operation is one of main work of ballast railway ballast maintenance, can effectively improve the stability of ballast and ensures the running safety of vehicles. The tamping device is a core component for tamping operation and has the combined effects of excitation and clamping, the tamping pick transmits vibrating force generated by the excitation to the railway ballast, so that the railway ballast vibrates and moves, the compactness of a railway bed can be improved, meanwhile, the railway ballast in a sleeper interval is extruded towards the sleeper bottom under the action of the clamping force by the tamping pick, the railway ballast at the sleeper bottom is more compact, the stability of a track is improved, and the driving safety is ensured. For example, CN222008500U discloses a tamping device and a tamping vehicle, which are used for tamping a sleeper, where the tamping device includes a fixed support and rotary actuators respectively disposed at two ends of the fixed support, each output end of the rotary actuator is connected with a tamping assembly, and the tamping assemblies connected to the two rotary actuators respectively execute tamping operations from two sides of the sleeper, however, a tamping cylinder used in the existing tamping device only adopts a single-layer O-ring for sealing at a joint of a cylinder head and a cylinder tube, and a single-lip dust ring is disposed at an outlet of the piston rod. Under long-term dust intrusion and pressure impact, seal aging and gas leakage occur, resulting in a decrease in cylinder thrust. Disclosure of utility model Based on the fact that the traditional tamping cylinder is sealed at the joint of the cylinder cover and the cylinder pipe by only adopting a single-layer O-shaped ring, the outlet of the piston rod is provided with a single-lip dust-proof ring. Under the condition of long-term dust invasion and pressure impact, sealing aging and gas leakage can occur, so that the technical problem of cylinder thrust reduction is solved. The utility model provides a tamping cylinder structure for a tamping device, which comprises a cylinder pipe, a gasket sealing sleeve, a cylinder cover and a piston connecting rod, wherein the cylinder pipe is arranged on the cylinder cover; The cylinder tube forms a main body supporting structure of the tamping cylinder; The cylinder cover is fixedly connected to one end of the cylinder tube and is matched with the cylinder tube to form a closed cylinder chamber; The sealing sleeve is fixedly connected to the connecting part of the cylinder cover and the cylinder pipe and the end part of the cylinder pipe, and comprises a guide sleeve, a Style seal and a dust ring which are coaxially sleeved; one end of the piston connecting rod is connected in the cylinder tube in a sliding way, and the other end of the piston connecting rod extends to the outside of the cylinder tube; the gasket is fixedly connected between the cylinder cover and the cylinder tube. Preferably, the tamping cylinder further comprises a reverse pin fixedly connected to the positioning hole of the cylinder tube Preferably, the tamping cylinder further comprises a castellated nut threadedly connected to the end thread section of the piston connecting rod. Preferably, the tamping cylinder further comprises a rubber damper block fixedly connected to an end of the cylinder tube. Preferably, the tamping cylinder further comprises a first sliding bearing and two second sliding bearings, wherein the first sliding bearing is sleeved on the matching section of the piston connecting rod and the cylinder cover in a sliding mode, and the second sliding bearing is sleeved on the end connecting section of the piston connecting rod in a sliding mode. Preferably, the tamping cylinder further comprises a spring washer, and the spring washer is sleeved on the screw portion of the inner hexagon bolt. Preferably, the cylinder tube is fixedly connected with the cylinder cover through a plurality of hexagon socket head cap bolts, and all bolts are uniformly distributed along the circumferential direction of the cylinder cover. Preferably, the end part of the piston connecting rod is provided with a hinge seat, and the hinge seat is rotationally connected with a tamping arm through a pin shaft. By means of the technical scheme, the beneficial effects of the utility model are as follows: 1. The sealing sleeve with the multi-layer sealing structure is adopted to replace a traditional single-layer O-shaped ring, the sealing performance of the connecting part of the cylinder cover and the cylinder pipe and the end part of the cylinder pipe is enhanced, dust and coal dust are prevented from entering, sealing aging is delayed, the sealing and buffering of the con