Rail grabbing device

Abstract

The utility model provides a rail grabbing device which comprises a grabbing frame, a movable claw, a driving and fastening device and a locking plate. A front rail claw is arranged at the front part of the grabbing frame; the movable claw corresponds to the front rail claw, and the top end of the movable claw is rotationally connected to the grabbing frame. The driving and fastening device is connected with the bottom of the movable claw; the front end of the locking plate is rotationally connected with the bottom of the movable claw, the rear end of the locking plate penetrates through a through hole reserved in the grabbing frame, a plurality of sawteeth inclining backwards are arranged at the bottom of the locking plate, and a clamping table inclining forwards and matched with the sawteeth is arranged at the bottom of the through hole reserved in the grabbing frame. By means of the rail gripping device, the state of gripping the steel rail can be firmly kept all the time in the rail sawing operation, and the situation that the whole structure is overturned due to the fact that the rail gripping device is completely loosened from the steel rail can be further prevented.

Description

Technical Field

[0001] This application relates to the field of operating tools, and more particularly to a rail gripping device. Background Technology

[0002] With the rapid development of high-speed railways and urban rail transit, the speed and quality requirements for rail transit construction are constantly increasing. During track laying and maintenance, it is often necessary to cut the rails, which has led to the development of various rail sawing machines. In the process of using rail sawing machines, it is often necessary to use a rail gripping device to lock the machine onto the rail before carrying out the cutting operation.

[0003] However, existing rail-gripping devices still have some problems, affecting the cutting accuracy and operating efficiency of rail sawing machines. For example, during rail sawing operations, vibrations and other factors can easily cause the rail-gripping device to loosen, making it difficult to ensure that the device maintains a firm grip on the rail throughout the entire process. When installing or removing the rail-gripping device from the rail, the device and the rail sawing machine support arm connected to it are prone to tipping over, making it difficult for a single worker to operate and inconvenient for installation and removal. Utility Model Content

[0004] In view of this, the present invention provides a rail gripping device, which can reliably maintain a gripping state on the rail during rail sawing operations.

[0005] The technical solution of this utility model is specifically implemented as follows:

[0006] A rail gripping device includes: a gripping frame, a movable claw, a drive and fastening device, and a locking plate;

[0007] The front part of the gripper is a front rail claw; the movable claw corresponds to the front rail claw, and its top end is rotatably connected to the gripper; the drive and fastening device is connected to the bottom of the movable claw.

[0008] The front end of the locking plate is rotatably connected to the bottom of the movable claw, and its rear end passes through the reserved through hole on the gripper frame. The bottom of the locking plate is provided with multiple serrations that slope backward, and the bottom of the reserved through hole on the gripper frame is provided with a clamping platform that slopes forward and matches the serrations.

[0009] Preferably, the driving and fastening device includes: a push rod and a rotating handle;

[0010] The front end of the push rod is rotatably connected to the bottom of the movable claw, the middle part is threadedly connected to a pre-set threaded hole on the claw frame, and a rotating handle is installed at its rear end.

[0011] Preferably, the bottom of the front rail claw and the movable claw has a hook portion that matches the shape of the rail head.

[0012] Preferably, the movable claw is rotatably connected to the gripper via a connecting shaft.

[0013] Preferably, the bottom of the movable claw is rotatably connected to a rotating shaft, the front end of the locking plate is rotatably connected to the rotating shaft, and the front end of the push rod is fixed to the rotating shaft.

[0014] Preferably, grooves are provided on both sides of the locking plate.

[0015] Preferably, the rail gripping device further includes an elastic clamp, which is fixed on the gripping frame and located at a preset position directly above the locking plate.

[0016] Preferably, the elastic clip has a symmetrical structure, with a tightening opening in the middle and two locking legs at the bottom. The opening width of the tightening opening is less than the thickness of the locking plate.

[0017] Preferably, the top of the elastic clip is fixed to the gripper by screws.

[0018] As can be seen above, in the rail gripping device of this utility model, through the dual action of the driving and fastening device and the locking mechanism such as the locking plate and elastic clamp, the rail gripping device can always firmly grip the rail during rail sawing operations, preventing the movable claw from loosening and affecting the cutting accuracy and efficiency of the rail sawing machine. Furthermore, by setting the front rail claw and the movable claw, the entire rail head can be gripped, thereby preventing the rail gripping device and its connected structure from completely detaching from the rail and causing the entire structure to tip over, thus improving safety and work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the rail gripping device and the rail in an embodiment of this utility model.

[0020] Figure 2 This is a schematic diagram of the rail-grabbing device in an embodiment of the present invention.

[0021] Figure 3 This is a cross-sectional view of the rail-grabbing device in an embodiment of this utility model.

[0022] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0023] Figure 5 This is a schematic diagram of the elastic clip in the embodiment of this utility model. Detailed Implementation

[0024] To make the technical solution and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a more detailed explanation of this utility model.

[0025] like Figures 1 to 5As shown, this utility model provides a rail gripping device, including: a gripping frame 1, a movable claw 2, a driving and fastening device 4, and a locking plate 5;

[0026] The front part of the gripper 1 is a front rail claw 11; the movable claw 2 corresponds to the front rail claw 11, and its top end is rotatably connected to the gripper 1; the drive and fastening device 4 is connected to the bottom of the movable claw 2.

[0027] The front end of the locking plate 5 is rotatably connected to the bottom of the movable claw 2, and its rear end passes through the pre-reserved through hole 12 on the gripper frame 1. The bottom of the locking plate 5 is provided with multiple serrations 51 that are angled backward. The bottom of the pre-reserved through hole 12 on the gripper frame 1 is provided with a clamping platform 122 that is angled forward and matches the serrations 51.

[0028] In the technical solution of this utility model, when performing rail sawing operations, the corresponding front rail claw 11 and movable claw 2 are first clamped onto the rail head of the rail 101. The drive and fastening device 4 is then operated to drive the movable claw 2 to rotate relative to the grabbing frame around its top end. Figure 1 As the clockwise rotation occurs, the direction of the serrations 51 on the locking plate matches the direction of the locking platform 122 at the bottom of the through hole 12. During the clockwise rotation of the movable claw 2, the locking plate can move forward within the through hole 12. At this time, the locking platform 122 does not limit or lock the serrations 51, so the serrations 51 can move forward relative to the locking platform 122 until the front rail claw 11 and the movable claw 2 cooperate to clamp the rail head of the entire rail 101. The drive and fastening device 4 is in place, and the locking platform 122 on the grabber is matched and engaged with the corresponding serrations 51 on the locking plate 5, preventing the locking plate 5 from moving backward.

[0029] Although the drive and fastening device 4 can already fix and lock the front rail claw 11 and the movable claw 2, in order to prevent the front rail claw 11 and the movable claw 2 from loosening slightly due to vibration or misoperation during operation, a locking mechanism is further set up. By using the cooperation of the saw teeth 51 and the clamping table 122, the locking plate 5 can only move forward and not backward in the through hole 12. This ensures that the rail gripping device can always firmly hold the rail during rail sawing, thereby improving the cutting accuracy and working efficiency of the rail sawing machine.

[0030] The rail-grabbing device described above can be implemented using various methods. The following will describe one such implementation in detail.

[0031] For example, preferably, in one specific embodiment of this utility model, such as Figures 1 to 3 As shown, the driving and fastening device 4 may include: a push rod 41 and a rotating handle 42;

[0032] The front end of the push rod 41 is rotatably connected to the bottom of the movable claw 2, the middle part is threadedly connected to a pre-set threaded hole on the claw frame 1, and a rotating handle 42 is installed at its rear end.

[0033] In the technical solution of this utility model, when it is necessary to grip the rail, the push rod 42 can be moved forward in the threaded hole on the gripper by rotating the handle 42, pushing the movable claw 2 to the rail head and clamping it. Since the push rod 42 is connected to the gripper by threads, when the movable claw 2 is tightened in place, it can limit the push rod 42 to a certain extent and prevent it from moving backward; at the same time, the locking plate 5 reaches the locking state, further preventing the push rod 42 from loosening or moving backward, so that the rail can be firmly gripped at all times during rail sawing operations.

[0034] For example, preferably, in one specific embodiment of this utility model, such as Figures 1 to 3 As shown, the front rail claw 11 and the movable claw 2 have hooks at the bottom that match the shape of the rail head of the rail 101, which can directly wrap around and clamp the entire rail head. Therefore, even if the movable claw 2 is loosened to a large extent, the hooks at the bottom of the front rail claw and the movable claw can still hook the rail head to a certain extent. Compared with the rail gripping device in the prior art, it is not easy to slip off the rail and will not tip over when the drive and fastening device 4 is slightly loosened. Only one worker can perform convenient operation, and it can also avoid injury to workers when tipping over, thus improving safety.

[0035] Furthermore, in a preferred embodiment of the present invention, the movable claw 2 can be rotatably connected to the gripper 1 via the connecting shaft 3.

[0036] In addition, preferably, in a specific embodiment of the present invention, the bottom of the movable claw 2 is rotatably connected to a rotating shaft 6, the front end of the locking plate 5 is rotatably connected to the rotating shaft 6, and the front end of the push rod 41 is fixed to the rotating shaft 6.

[0037] Furthermore, preferably, in one specific embodiment of this utility model, such as Figure 3 As shown, grooves 52 can be provided on both sides of the locking plate 5.

[0038] Furthermore, preferably, in one specific embodiment of this utility model, such as Figure 1 and Figure 5 As shown, the rail gripping device may also include an elastic clip 8, which is fixed on the gripping frame 1 and located at a preset position directly above the locking plate 5.

[0039] Furthermore, as an example, in a preferred embodiment of this utility model, such as Figure 5As shown, the elastic clip 8 can be a symmetrical structure, with a tightening opening 81 in the middle and two clip legs 82 at the bottom. The opening width of the tightening opening 81 is less than the thickness of the locking plate 5.

[0040] Preferably, as an example, the top of the elastic clip 8 can be fixed to the gripper 1 by screws.

[0041] In the technical solution of this utility model, when it is necessary to remove the rail gripping device from the rail, simply manually pull the locking plate 5 upward to overcome the elastic force at the spring clamp tightening opening 81, allowing the locking plate to move upward into the tightening opening until the tightening opening is clamped in the groove 52 on the locking plate, preventing the locking plate 5 from falling down. At the same time, the serrations 51 move upward away from the clamping table 122, and the locking plate 5 is unlocked. Since the locking plate 5 is now clamped by the spring clamp 8 and will not fall down, the operator can then use both hands to operate the drive and fastening device 4 in the opposite direction to remove the rail gripping device, and the removal process will not be interfered with by the locking plate. The whole process is simple to operate, and since the locking plate 5 and the rotating handle 42 are located on the same side, only one operator is needed on one side of the device to complete the installation and removal of the rail gripping device, saving time and effort and greatly improving work efficiency.

[0042] In summary, the technical solution of this utility model, through the dual action of the driving and fastening device and the locking mechanism such as the locking plate and elastic clamp, ensures that the rail gripping device firmly grips the rail during rail sawing operations, preventing the movable claw from loosening and affecting the cutting accuracy and efficiency of the rail saw. Furthermore, by setting a front rail claw and a movable claw, the entire rail head can be gripped, preventing the rail gripping device and its connected structure from completely detaching from the rail and causing the entire structure to tip over, thus improving safety and work efficiency.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A rail-grabbing device, characterized in that, include: Grab frame, movable claw, drive and fastening device, and locking plate; The front part of the grabber is a front rail claw; The movable claw corresponds to the front rail claw, and its top end is rotatably connected to the gripper frame; the drive and fastening device is connected to the bottom of the movable claw. The front end of the locking plate is rotatably connected to the bottom of the movable claw, and its rear end passes through the reserved through hole on the gripper frame. The bottom of the locking plate is provided with multiple serrations that slope backward, and the bottom of the reserved through hole on the gripper frame is provided with a clamping platform that slopes forward and matches the serrations.

2. The rail-grabbing device according to claim 1, characterized in that, The driving and fastening device includes: a push rod and a rotating handle; The front end of the push rod is rotatably connected to the bottom of the movable claw, the middle part is threadedly connected to a pre-set threaded hole on the claw frame, and a rotating handle is installed at its rear end.

3. The rail-grabbing device according to claim 1, characterized in that, The bottom of the front rail claw and the movable claw has a hook that matches the shape of the rail head.

4. The rail-grabbing device according to claim 1, characterized in that, The movable claw is rotatably connected to the gripper frame via a connecting shaft.

5. The rail-grabbing device according to claim 2, characterized in that, The bottom of the movable claw is rotatably connected to a rotating shaft, the front end of the locking plate is rotatably connected to the rotating shaft, and the front end of the push rod is fixed to the rotating shaft.

6. The rail-grabbing device according to claim 1, characterized in that, The locking plate has grooves on both sides.

7. The rail-grabbing device according to claim 1, characterized in that, The rail gripping device also includes an elastic clamp, which is fixed on the gripping frame and located at a preset position directly above the locking plate.

8. The rail-grabbing device according to claim 7, characterized in that, The elastic clip has a symmetrical structure with a tightening opening in the middle and two locking legs at the bottom. The opening width of the tightening opening is smaller than the thickness of the locking plate.

9. The rail-grabbing device according to claim 8, characterized in that, The top of the elastic clip is fixed to the gripper frame by screws.

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