Lifting oil cylinder of sleeper grabbing mechanism for railway construction

Abstract

The utility model discloses a sleeper grabbing mechanism lifting oil cylinder for railway construction, which comprises a cylinder body, a guide sleeve is arranged in the middle of one side of the cylinder body, a piston rod is inserted in the middle of the guide sleeve, one end of the piston rod in the cylinder body is fixedly connected with a piston, and four outer pipes arranged in a matrix are arranged on the outer side of the cylinder body. An inner rod is inserted into the end, close to the guide sleeve, of the outer pipe, the end, located in the outer pipe, of the inner rod is fixedly connected with the inner wall of the outer pipe through a spring, a fixing plate is arranged at the side end, away from the cylinder body, of the piston rod, the inner rod is fixedly connected with the fixing plate, and an oil inlet hole is formed in the side, away from the guide sleeve, of the cylinder body. Air holes are formed in the side, close to the guide sleeve, of the cylinder body. The lifting oil cylinder is simple in structure, convenient to operate and good in structural stability, kinetic energy of the piston rod at the two ends of the stroke can be effectively buffered through buffering of the spring, and the service life of the oil cylinder is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting oil cylinders, in particular to a lifting oil cylinder of a pillow grabbing mechanism for railway construction. Background Art

[0002] The front earring of the existing grab pillow mechanism lifting cylinder is threadedly connected to the piston rod and has a service life of 5 to 7 days. The function of this cylinder is to lift the old sleepers picked up by the mechanism and send them to the conveyor belt. This mechanism was originally designed for wooden sleepers abroad, but since my country's railway sleepers have been changed to reinforced concrete sleepers, they are much heavier than wooden sleepers. In addition, this cylinder has a fast speed and frequent movements, with a frequency of 15 times per minute. In the process of grabbing and weighing sleepers, the cylinder has a large kinetic energy when it moves to the end of the stroke. If no deceleration is performed, the cylinder piston and the cylinder head will have a mechanical collision, generating impact and noise, which seriously affects the practical life of the cylinder. For this reason, we propose a lifting cylinder for grab pillow mechanism for railway construction. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a lifting cylinder for a sleeper grabbing mechanism for railway construction. The utility model solves the problem that when the cylinder grabs and weighs sleepers, the cylinder has a large kinetic energy when it moves to the end of the stroke. If no deceleration is performed, the cylinder piston and the cylinder cover will have a mechanical collision, generating impact and noise, which seriously affects the practical life of the cylinder.

[0004] The utility model discloses a lifting oil cylinder of a pillow grabbing mechanism for railway construction, comprising a cylinder body, a guide sleeve is provided in the middle of one side of the cylinder body, a piston rod is inserted in the middle of the guide sleeve, one end of the piston rod is located in the cylinder body and is fixedly connected to the piston, four outer tubes arranged in a matrix are provided on the outside of the cylinder body, an inner rod is inserted in one end of the outer tube close to the guide sleeve, one end of the inner rod is located in the outer tube and is fixedly connected to the inner wall of the outer tube through a spring, a fixing plate is provided at one end of the piston rod away from the cylinder body, the inner rod is fixedly connected to the fixing plate, an oil inlet hole is provided on the side of the cylinder body away from the guide sleeve, and an air hole is provided on the side of the cylinder body close to the guide sleeve.

[0005] In the above solution, a first U-shaped connecting seat is provided on the side of the piston rod away from the cylinder body.

[0006] In the above solution, the piston rod and the first U-shaped connecting seat are fixedly connected via a clamp.

[0007] In the above solution, a second U-shaped connecting seat is provided on the side of the cylinder body away from the guide sleeve.

[0008] In the above solution, a first dustproof ring is provided on the side of the piston away from the piston rod, and a first sealing ring is provided on one side of the first dustproof ring.

[0009] In the above solution, a second dustproof ring is provided on the outer side of the guide sleeve, and a second sealing ring is provided on one side of the second dustproof ring.

[0010] The advantages and beneficial effects of the utility model are as follows: the utility model provides a lifting cylinder of a grabbing pillow mechanism for railway construction. When the piston rod is extended and retracted, the fixed plate can drive the inner rod to extend and retract inside the outer tube through the transmission of the fixed plate. When the piston rod is extended, the inner rod stretches the spring. The elastic force of the spring can buffer the kinetic energy of the telescopic rod at the end of the stroke, thereby effectively avoiding the phenomenon of damage to the cylinder caused by excessive impact force of the piston rod. Similarly, when the piston rod is retracted, the kinetic energy of the piston rod at the starting point of the stroke can be buffered by the elastic force of the spring. The arrangement of the outer tube and the inner rod effectively increases the overall structural strength of the cylinder. This type of lifting cylinder has a simple structure, is easy to operate, and has good structural stability. Through the buffering of the spring, the kinetic energy of the piston rod at both ends of the stroke can be effectively buffered, thereby increasing the practical life of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a cross-sectional view of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of part A of the utility model;

[0015] Figure 4 This is a schematic structural diagram of part B of the utility model.

[0016] In the figure: 1, cylinder body 2, guide sleeve 3, piston rod 4, piston

[0017] 5. Outer tube 6. Inner rod 7. Spring 8. First U-shaped connecting seat

[0018] 9. Clamp 10. Second U-shaped connecting seat 11. Fixing plate 12. First dustproof ring

[0019] 13. first sealing ring 14. second dustproof ring 15. second sealing ring 16. oil inlet hole 17. air hole. DETAILED DESCRIPTION

[0020] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0021] like Figure 1-4 As shown, the utility model is a lifting cylinder of a pillow grabbing mechanism for railway construction, including a cylinder body 1, a guide sleeve 2 is provided in the middle of one side of the cylinder body 1, a piston rod 3 is inserted in the middle of the guide sleeve 2, one end of the piston rod 3 is located in the cylinder body 1 and is fixedly connected to a piston 4, four outer tubes 5 arranged in a matrix are provided on the outside of the cylinder body 1, an inner rod 6 is inserted at one end of the outer tube 5 close to the guide sleeve 2, one end of the inner rod 6 is located in the outer tube 5 and is fixedly connected to the inner wall of the outer tube 5 through a spring 7, a fixing plate 11 is provided at one end of the piston rod 3 away from the cylinder body 1, the inner rod 6 is fixedly connected to the fixing plate 11, the inner rod 6 and the outer tube 5 are movably connected, and when the piston rod 3 is extended When the piston rod 3 is retracted, the fixed plate 11 can drive the inner rod 6 to retract and expand inside the outer tube 5 through the transmission of the fixed plate 11. When the piston rod 3 is extended, the inner rod 6 stretches the spring 7. The elastic force of the spring 7 can buffer the kinetic energy of the telescopic rod at the end of the stroke, thereby effectively avoiding the phenomenon of damage to the oil cylinder caused by excessive impact force of the piston rod 3. Similarly, when the piston rod 3 is retracted, the kinetic energy of the piston rod 3 at the starting point of the stroke end can be buffered by the elastic force of the spring 7. The arrangement of the outer tube 5 and the inner rod 6 effectively increases the overall structural strength of the oil cylinder. The cylinder body 1 is provided with an oil inlet hole 16 on the side away from the guide sleeve 2, and the cylinder body 1 is provided with an air hole 17 on the side close to the guide sleeve 2.

[0022] A first U-shaped connecting seat 8 is disposed on the side of the piston rod 3 away from the cylinder body 1 .

[0023] The piston rod 3 is fixedly connected to the first U-shaped connecting seat 8 via a clamp 9 .

[0024] The cylinder body 1 is provided with a second U-shaped connecting seat 10 on the side away from the guide sleeve 2. The arrangement of the first U-shaped connecting seat 8 and the second U-shaped connecting seat 10 enables the oil cylinder to be fixedly installed on the pillow grabbing mechanism.

[0025] The piston 4 is provided with a first dustproof ring 12 on the side away from the piston rod 3, and a first sealing ring 13 is provided on one side of the first dustproof ring 12. The first sealing ring 13 increases the sealing between the piston 4 and the inner wall of the cylinder body 1, and the first dustproof ring 12 increases the dustproof performance between the piston 4 and the cylinder body 1.

[0026] A second dustproof ring 14 is provided on the outside of the guide sleeve 2, and a second sealing ring 15 is provided on one side of the second dustproof ring 14. The second dustproof ring 14 increases the dustproof performance between the guide sleeve 2 and the piston rod 3, and the second sealing ring 15 effectively increases the sealing between the guide sleeve 2 and the piston rod 3.

[0027] Specifically, in the utility model, when the piston rod 3 is extended and retracted, the fixed plate 11 can drive the inner rod 6 to extend and retract inside the outer tube 5 through the transmission of the fixed plate 11. When the piston rod 3 is extended, the inner rod 6 stretches the spring 7. The elastic force of the spring 7 can buffer the kinetic energy of the telescopic rod at the end of the stroke, thereby effectively avoiding the phenomenon that the impact force of the piston rod 3 is too large and causes damage to the cylinder. Similarly, when the piston rod 3 is contracted, the kinetic energy of the piston rod 3 at the starting point of the stroke end can be buffered by the elastic force of the spring 7. The arrangement of the outer tube 5 and the inner rod 6 effectively increases the overall structural strength of the cylinder.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting cylinder for a pillow grabbing mechanism for railway construction, comprising a cylinder body (1), characterized in that: A guide sleeve (2) is provided in the middle of one side of the cylinder body (1), a piston rod (3) is inserted in the middle of the guide sleeve (2), one end of the piston rod (3) located in the cylinder body (1) is fixedly connected to the piston (4), four outer tubes (5) arranged in a matrix are provided on the outside of the cylinder body (1), an inner rod (6) is inserted in the end of the outer tube (5) close to the guide sleeve (2), one end of the inner rod (6) located in the outer tube (5) is fixedly connected to the inner wall of the outer tube (5) through a spring (7), a fixing plate (11) is provided at the end of the piston rod (3) away from the cylinder body (1), and the inner rod (6) is fixedly connected to the fixing plate (11), an oil inlet hole (16) is provided on the side of the cylinder body (1) away from the guide sleeve (2), and an air hole (17) is provided on the side of the cylinder body (1) close to the guide sleeve (2).

2. The lifting cylinder of the grab pillow mechanism for railway construction according to claim 1 is characterized in that: A first U-shaped connecting seat (8) is provided on the side of the piston rod (3) away from the cylinder body (1).

3. The lifting cylinder of the grabbing pillow mechanism for railway construction according to claim 1 is characterized in that: The piston rod (3) and the first U-shaped connecting seat (8) are fixedly connected via a clamp (9).

4. The lifting cylinder of the grab pillow mechanism for railway construction according to claim 1 is characterized in that: A second U-shaped connecting seat (10) is provided on the side of the cylinder body (1) away from the guide sleeve (2).

5. The lifting cylinder of the grab pillow mechanism for railway construction according to claim 1 is characterized in that: A first dustproof ring (12) is provided on the side of the piston (4) away from the piston rod (3), and a first sealing ring (13) is provided on one side of the first dustproof ring (12).

6. The lifting cylinder of the grabbing pillow mechanism for railway construction according to claim 1 is characterized in that: A second dustproof ring (14) is provided on the outer side of the guide sleeve (2), and a second sealing ring (15) is provided on one side of the second dustproof ring (14).

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