Narrow Position Nail Puller

Abstract

The present invention relates to the technical field of railway equipment, and particularly relates to a nail puller for narrow positions, which includes a first sleeve, a second sleeve, a first sliding sleeve and a second sliding sleeve. The second sleeve is fixedly arranged on one side of the first sleeve. The first sliding sleeve and the second sliding sleeve are respectively slidably arranged in the first sleeve and the second sleeve. A pulling head is arranged on the first sliding sleeve, and the second sliding sleeve is in transmission connection with the first sliding sleeve through a transmission mechanism. The power input end of this nail puller is on the side of the second sleeve, and the power output end is on the side of the first sleeve. The first sleeve and the second sleeve are not coaxial, separating the fixing of the plug nail from the power input end, that is, transferring the position of the power source required to pull out the plug nail, simplifying the structure of the fixing end of the plug nail, so as to be able to adapt to the pulling out of the plug nail at narrow positions. The structure of the present invention is simple, transfers the input position of the power required to pull out the plug nail, can adapt to the pulling out of the plug nail in a narrow space, the pulling out process is safe and reliable, has high efficiency, and reduces the labor intensity.

Description

Technical Field

[0001] The present invention relates to the technical field of railway equipment, and particularly relates to a nail puller for narrow positions. Background Art

[0002] Signal wires or lead wire ends on railway tracks are fixed by plug pins. When it is necessary to pull out the plug pins due to operation requirements, a hydraulic plug pin puller is commonly used. However, the hydraulic plug pin puller is long and large in volume and cannot be applied to some narrow positions, such as the environment with a small space at the turnout frog. If a crowbar is used manually to pull out the plug pin, it is time-consuming and laborious, and there are also some potential risks. Summary of the Invention

[0003] In order to solve the problem that the plug pins in narrow positions cannot be pulled out safely and reliably, the present invention provides a nail puller for narrow positions, which has a simple structure, transfers the input position of the power required for pulling out the plug pin, can adapt to the pulling out of plug pins in narrow spaces, is safe and reliable during the pulling out process, has high efficiency, and reduces the labor intensity.

[0004] In order to achieve the above object, the technical solution of the present invention is as follows:

[0005] The nail puller for narrow positions includes a first sleeve, a second sleeve, a first sliding sleeve and a second sliding sleeve. The second sleeve is fixedly arranged on one side of the first sleeve. The first sliding sleeve and the second sliding sleeve are respectively slidably arranged in the first sleeve and the second sleeve. A pulling head is arranged on the first sliding sleeve, and the second sliding sleeve is in transmission connection with the first sliding sleeve through a transmission mechanism.

[0006] In a further preferred solution, an installation shell is arranged on one side of the first sleeve, the second sleeve is arranged on the installation shell, and both ends of the installation shell are communicated with the first sleeve and the second sleeve respectively. The first sleeve, the installation shell and the second sleeve are arranged in an "H" shape.

[0007] In a further preferred solution, the transmission mechanism includes a rack and a gear. First racks and second racks are respectively arranged on the opposite sides of the first sliding sleeve and the second sliding sleeve. A plurality of gears are sequentially rotatably arranged in the installation shell, and the plurality of gears are in meshing transmission with each other. The gears located on both sides of the installation shell are respectively in meshing transmission with the first rack and the second rack.

[0008] In a further preferred solution, a telescopic device is further included. The telescopic device is detachably connected to the second sleeve, and the telescopic end of the telescopic device is detachably connected to the second sliding sleeve.

[0009] In a further preferred solution, a connecting column with a T-shaped cross section is arranged at one end of the first sliding sleeve. The pulling head is a hollow columnar structure. One end of the pulling head is sleeved on the connecting column and is rotatably connected to the first sliding sleeve. The other end of the pulling head is provided with a U-shaped nail placement groove, and the position of the pulling head corresponding to the nail placement groove is an open cavity.

[0010] In a further preferred embodiment, one end of the first sleeve is provided with a sheath, the sheath is in a semi-circular ring structure, and the sheath is located outside the pulling head.

[0011] By the above technical solution, the beneficial effects of the present invention are as follows:

[0012] The present invention includes a first sleeve, a second sleeve, a first sliding sleeve and a second sliding sleeve. The first sleeve and the second sleeve are not coaxial and are arranged on different sides. The first sliding sleeve and the second sliding sleeve are drivingly connected. A plug is fixed by the pulling head on the first sliding sleeve, and the movement of the second sliding sleeve drives the movement of the first sliding sleeve, thereby pulling out the plug on the railway track. The power input end of this nail puller is on the side of the second sleeve, and the power output end is on the side of the first sleeve. The first sleeve side is also the side where the plug is fixed and pulled out. The first sleeve and the second sleeve are not coaxial, separating the fixing of the plug and the power input end, that is, transferring the position of the power source required to pull out the plug, simplifying the structure of the plug fixing end, so as to be able to adapt to the pulling out of the plug at a narrow position. The structure of the present invention is simple, transfers the input position of the power required to pull out the plug, can adapt to the pulling out of the plug in a narrow space, the pulling out process is safe and reliable, efficient, and reduces the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the nail puller at a narrow position of the present invention;

[0014] Figure 2 is a schematic cross-sectional structural diagram of the nail puller at a narrow position of the present invention;

[0015] Figure 3 is a schematic cross-sectional structural diagram of the pulling head of the present invention.

[0016] The reference numerals in the drawings are: 1 is the first sleeve, 101 is the sheath, 2 is the second sleeve, 3 is the first sliding sleeve, 301 is the connecting column, 4 is the second sliding sleeve, 5 is the pulling head, 6 is the transmission mechanism, 601 is the first rack, 602 is the second rack, 603 is the gear, 7 is the mounting shell, and 8 is the telescopic device. DETAILED DESCRIPTION OF THE INVENTION

[0017] The present invention will be further described below in conjunction with the drawings and specific embodiments:

[0018] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left", "right", "up", "down", "horizontal", "vertical", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Figure 1 The orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present invention.

[0019] As shown in Figures 1 to 3 the figure, this embodiment provides a nail puller for narrow positions, including a first sleeve 1, a second sleeve 2, a first sliding sleeve 3 and a second sliding sleeve 4. The second sleeve 2 is fixedly arranged on one side of the first sleeve 1. The first sliding sleeve 3 and the second sliding sleeve 4 are respectively slidably arranged in the first sleeve 1 and the second sleeve 2. A pulling head 5 is arranged on the first sliding sleeve 3. The second sliding sleeve 4 is in transmission connection with the first sliding sleeve 3 through a transmission mechanism 6. The plug nail is fixed by the pulling head 5, and the movement of the second sliding sleeve 4 drives the movement of the first sliding sleeve 3, so as to pull out the plug nail on the railway track. The power input end of this nail puller is on the side of the second sleeve, and the power output end is on the side of the first sleeve. The side of the first sleeve is also the side where the plug nail is fixed and pulled out. The first sleeve 1 and the second sleeve 2 are not coaxial, separating the fixing of the plug nail and the power input end, that is, transferring the position of the power source required to pull out the plug nail, simplifying the structure of the fixed end of the plug nail, so as to be able to adapt to the pulling out of the plug nail at narrow positions.

[0020] As described above, an installation shell 7 is arranged on one side of the first sleeve 1. The second sleeve 2 is arranged on the installation shell 7. Both ends of the installation shell 7 are respectively communicated with the first sleeve 1 and the second sleeve 2. The first sleeve 1, the installation shell 7 and the second sleeve 2 are arranged in an "H" shape.

[0021] Furthermore, the transmission mechanism 6 includes a rack and a gear 603. First racks 601 and second racks 602 are respectively arranged on the opposite sides of the first sliding sleeve 3 and the second sliding sleeve 4. The three gears 603 are sequentially rotatably arranged in the installation shell 7. The three gears 603 are sequentially meshed for transmission. The gears 603 located on both sides of the installation shell 7 are respectively meshed with the first rack 601 and the second rack 602 for transmission. When the second sliding sleeve 4 moves in the second sleeve 2, it drives the second rack 602 to move. The second rack 602 meshes with the adjacent gear, and then drives the first rack 601 to move through the meshing transmission of the three gears, so that the first sliding sleeve 3 moves in the first sleeve 1, and then drives the plug nail on the pulling head 5 to move, pulling out the plug nail.

[0022] Furthermore, to improve the automation degree of this nail puller and reduce the labor intensity, this nail puller further includes a telescopic device 8. As a specific implementation manner, the telescopic device 8 adopts a hydraulic clamp. The end of the hydraulic clamp is detachably connected to the second sleeve 2 through a thread. The telescopic end of the hydraulic clamp, that is, the plug column, is detachably connected to the second sliding sleeve 4. Through the operation of the hydraulic clamp, the plug column is driven to extend, thereby driving the second sliding sleeve 4 to move, and driving the first sliding sleeve 3 to move through the transmission mechanism, achieving the purpose of pulling out the plug nail.

[0023] Furthermore, one end of the first sliding sleeve 3 is provided with a connecting column 301 having a T-shaped cross-section. The pulling head 5 is a hollow columnar structure. One end of the pulling head 5 is sleeved on the connecting column 301 and rotatably connected to the first sliding sleeve 3. The other end of the pulling head 5 is provided with a U-shaped nail placing groove, and the position of the pulling head 5 corresponding to the nail placing groove is an open cavity. One end of the first sleeve 1 is provided with a sheath 101. The sheath 101 is a semi-circular ring structure and is located outside the pulling head 5. When the head of the plug nail is fixed by the pulling head 5, the head of the plug nail is located in the cavity of the pulling head 5 through the nail placing groove of the pulling head 5. The pulling head 5 and the first sliding sleeve 3 can slide relative to each other, which not only makes the use of this extractor more flexible, but also after the head of the plug nail is placed in the cavity of the pulling head 5, the pulling head 5 can be rotated to make the open side of the pulling head 5 face the sheath 101, so that the head of the plug nail is located in the sealed cavity formed between the pulling head 5 and the sheath 101, making the extraction of the plug nail safer and avoiding potential danger to the nail extractor or the surrounding environment caused by the vibration and deviation of the plug nail.

[0024] Usage process:

[0025] Fix and install the hydraulic pliers with the second sleeve 2 and the second sliding sleeve 4. Place the head of the plug nail in the cavity of the pulling head 5 through the nail placing groove, and rotate the pulling head 5 to seal the head of the plug nail in the space between the pulling head 5 and the sheath 101. Start the hydraulic pliers. The plug column of the hydraulic pliers drives the second sliding sleeve 4 to move, thereby driving the second rack 602 to move. Through the transmission of the three gears 603, the first rack 601 is driven to move, and then the first sliding sleeve 3 and the pulling head 5 are driven to move towards the inside of the first sleeve 1 to pull out the plug nail. After the plug nail is pulled out, this nail extractor can be moved away, and then through the reverse operation of the hydraulic pliers, the pulling head 5 is exposed, so that the plug nail can be removed to facilitate the extraction operation of the next plug nail.

[0026] The above embodiments are only the preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the present invention patent should be included in the scope of the present invention's patent application.

Claims

1. Narrow-position nail extractor, characterized in that, It includes a first sleeve (1), a second sleeve (2), a first sliding sleeve (3) and a second sliding sleeve (4). The second sleeve (2) is fixedly arranged on one side of the first sleeve (1). The first sliding sleeve (3) and the second sliding sleeve (4) are respectively slidably arranged in the first sleeve (1) and the second sleeve (2). A pulling head (5) is arranged on the first sliding sleeve (3). The second sliding sleeve (4) is in transmission connection with the first sliding sleeve (3) through a transmission mechanism (6). An installation shell (7) is arranged on one side of the first sleeve (1). The second sleeve (2) is arranged on the installation shell (7). Both ends of the installation shell (7) are respectively communicated with the first sleeve (1) and the second sleeve (2). The first sleeve (1), the installation shell (7) and the second sleeve (2) are arranged in an "H" shape. The transmission mechanism (6) includes a rack and a gear (603). First racks (601) and second racks (602) are respectively arranged on the opposite sides of the first sliding sleeve (3) and the second sliding sleeve (4). A plurality of the gears (603) are sequentially rotatably arranged in the installation shell (7). The plurality of gears (603) are in meshing transmission with each other. The gears (603) located on both sides of the installation shell (7) are respectively in meshing transmission with the first rack (601) and the second rack (602). A sheath (101) is arranged at one end of the first sleeve (1).

2. The narrow-position nail extractor according to claim 1, characterized in that, It further includes a telescopic device (8). The telescopic device (8) is detachably connected to the second sleeve (2). The telescopic end of the telescopic device (8) is detachably connected to the second sliding sleeve (4).

3. The narrow-position nail extractor according to claim 1, characterized in that, A connecting column (301) with a T-shaped cross-section is arranged at one end of the first sliding sleeve (3). The pulling head (5) is a hollow columnar structure. One end of the pulling head (5) is sleeved on the connecting column (301) and is rotatably connected to the first sliding sleeve (3). The other end of the pulling head (5) is provided with a U-shaped nail placement groove. A cavity is formed at the position of the pulling head (5) corresponding to the nail placement groove and is open.

4. The narrow-position nail extractor according to claim 1, characterized in that, The sheath (101) is in a semi-circular ring structure and is located outside the pulling head (5).

Images