A clamping device for a rail drill

Abstract

The utility model relates to a kind of clamping devices of rail drilling machine, including clamping seat, clamping swing lever being rotatably installed on clamping seat, the compression plate being installed in the bottom of clamping seat, with clamping swing lever one end rotatable connection's clamping shaft, with clamping screw being threadedly connected with clamping shaft, with clamping head and handle being movably connected with clamping screw both ends, with locking block being rotatably connected with clamping head by first rotation axis and being equipped with locking face, second rotation axis being rotatably connected with locking block and clamping seat respectively, clamping screw makes locking face rest on clamping seat when clamping rail, to make the one end of clamping swing lever and compression plate be clamped in the both sides of rail;When rail is loosened, locking face is away from clamping seat, the one end of clamping swing lever and compression plate are away from the both sides of rail.The clamping device locking stroke is very short, both can guarantee quick locking and loosening, while it can make the angle of opening larger, and keep opening unchanged, convenient to insert to rail.

Description

Technical Field

[0001] This utility model relates to a rail drilling machine, and more particularly to a clamping device for a rail drilling machine. Background Technology

[0002] Rail drilling machines are equipped with clamping devices for convenient drilling. For example, CN2637045Y discloses a clamping mechanism including a positioning device, a support device, and a clamping swing arm. The support part and support device on the swing arm are connected by a shaft. The lower end of the swing arm has a contact part, and the upper end has a clamping handle. A locking bar is located in the middle of the clamping handle, and the rear half of the locking bar is threaded. The upper end of the swing arm has a groove to accommodate the left and right rotation of the locking bar. A shaft passes horizontally through the groove, and a threaded hole penetrates the shaft horizontally. The locking bar passes through the threaded hole of the shaft. Although its structure is simple, the stroke of the locking bar is relatively long during use, and the time required for clamping and releasing is still considerable. Utility Model Content

[0003] To solve the above problems, this utility model provides a clamping device for a rail drilling machine, the specific technical solution of which is as follows:

[0004] A clamping device for a rail drilling machine includes: a clamping seat with a connecting arm; pressure plates on both sides of the bottom of the clamping seat; a clamping swing arm rotatably mounted on the connecting arm, one end of which is opposite to the pressure plate; a clamping shaft rotatably mounted on the other end of the clamping swing arm and having a clamping threaded hole; a clamping screw mounted on the clamping threaded hole; a clamping head rotatably mounted on one end of the clamping screw; a first rotating shaft mounted on the clamping head; a second rotating shaft mounted on the clamping seat; and a lock. The clamping block has two ends rotatably connected to the first rotating shaft and the second rotating shaft, respectively, and has a locking surface opposite to the top of the clamping seat; and a handle movably disposed at the other end of the clamping screw; wherein, when clamping the rail, the clamping screw causes the locking surface to abut against the clamping seat, so that one end of the clamping lever is clamped to both sides of the rail with the pressure plate; when releasing the rail, the locking surface moves away from the clamping seat, and one end of the clamping lever and the pressure plate move away from both sides of the rail.

[0005] Preferably, it further includes: an adjusting sleeve, which is disposed on the clamping seat and is disposed opposite to the locking surface.

[0006] Preferably, the clamping seat is provided with a rotating groove, and one end of the locking block is rotatably disposed in the rotating groove.

[0007] Preferably, it also includes a handle located at the top of the clamping seat.

[0008] Preferably, the clamping seat is further provided with a connecting rod, which is connected to the pressure plate.

[0009] Preferably, it also includes a clamping wheel, which is rotatably disposed at the end of the clamping lever and is disposed opposite to the clamping plate.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The clamping device of the rail drilling machine provided by this utility model achieves clamping and releasing of the clamping cylinder by the locking surface of the locking block and the clamping screw. The locking stroke is very short, which can ensure fast locking and releasing, while allowing a large opening angle and keeping the opening unchanged, making it convenient to insert into the rail. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this application;

[0013] Figure 2 This is a front view of this application;

[0014] Figure 3 This is a cross-sectional view of this application;

[0015] Figure 4 This is a schematic diagram of the clamping seat structure;

[0016] Figure 5 This is a schematic diagram of the locking block. Detailed Implementation

[0017] The present invention will now be further described with reference to the accompanying drawings.

[0018] like Figures 1 to 5As shown, a clamping device for a rail drilling machine includes a clamping seat 1, a pressure plate 2, a clamping swing rod 3, a clamping shaft 4, a clamping screw 6, a clamping head 7, a first rotating shaft 51, a second rotating shaft 52, a locking block 9, and a handle 81. Two pressure plates 2 are symmetrically mounted on both sides of the bottom of the clamping seat 1. A connecting arm 11 is provided in the middle of the clamping seat 1. One end of the connecting arm 11 is rotatably connected to the middle of the clamping swing rod 3 via a third rotating shaft 32. The bottom of the clamping swing rod 3 is opposite to the pressure plate 2, and the top of the clamping swing rod 3 is rotatably connected to the clamping shaft 4. The clamping shaft 4 is provided with a clamping threaded hole, which is connected to the clamping screw 6. One end of the clamping screw 6 is equipped with a handle 81, which is used to rotate the clamping screw 6. The other end of the clamping screw 6 is rotatably connected to the clamping head 7. The clamping head 7 is U-shaped. One end of the clamping head 7 is rotatably connected to the locking block 9 through the first rotating shaft 51. The other end of the locking block 9 is rotatably connected to the clamping seat 1 through the second rotating shaft 52. The locking block 9 is provided with a locking surface 91, which is arranged opposite to the top of the clamping seat 1 and is used to abut against the clamping seat 1. When clamping the rail, place the bottom of the clamping plate 2 and the clamping lever 3 on both sides of the rail, then push the handle 81 downwards to make the locking block 9 flip upwards and make the locking surface 91 abut against the clamping seat 1. Then rotate the handle 81 to make the clamping screw 6 drive the clamping head 7 to move towards the clamping seat 1, so that the locking surface 91 is pressed against the clamping seat 1. At the same time, the clamping screw 6 pushes the clamping lever 3 to rotate, and the bottom of the clamping lever 3 moves towards the rail, so that the bottom of the clamping lever 3 cooperates with the clamping plate 2 to press against the rail. When the locking surface 91 is pressed against the clamping seat 1, the center of the first rotating shaft 51 is located above the line connecting the centers of the clamping shaft 4 and the second rotating shaft 52. The line connecting the clamping shaft 4, the first rotating shaft 51 and the second rotating shaft 52 forms a triangle, thus keeping the locking block 9 in a pressed state, that is, making the clamping device in the state of clamping the rail. When releasing the rail, rotate handle 81 in the opposite direction to move the first rotating shaft 51 downward until the center of the first rotating shaft 51 moves below the line connecting the center of the clamping shaft 4 and the center of the second rotating shaft 52. At this point, the clamping lever 3 can be opened at a large angle. The overall number of rotations of handle 81 is small, which means the clamping and releasing strokes are short, enabling rapid clamping and releasing.

[0019] Because the locking block 9 and the clamping head 7 can move downward a large distance, the bottom of the clamping lever 3 relative to the rail can open at a large angle, making it easy to insert into and remove from the rail.

[0020] To facilitate adjustment of the distance between the center lines connecting the first rotating shaft 51 and the clamping shaft 4 and the second rotating shaft 52, an adjusting sleeve 92 is also included. The adjusting sleeve 92 is installed on the clamping seat 1 and is positioned opposite to the locking surface 91 so that the locking surface 91 abuts against the end face of the adjusting sleeve 92. The adjusting sleeve 92 can reduce the machining accuracy of the clamping seat 1 and the errors caused by assembly, thereby achieving adjustment of the minimum clamping stroke.

[0021] To make the structure more compact and to facilitate the installation of the locking block 9, the clamping seat 1 is provided with a rotating groove 13, one end of the locking block 9 is movably inserted into the rotating groove 13, and the second rotating shaft 52 passes through the rotating groove 13.

[0022] For ease of use, the top of the clamping seat 1 is also equipped with a handle 82, which can be installed on the adjusting sleeve 92.

[0023] The clamping seat 1 is also provided with a connecting rod 14, which is connected to the pressure plate 2.

[0024] To facilitate the processing of clamping seat 1, connecting rods 14 are symmetrically installed on both sides of clamping seat 1, and the bottom of the connecting rods 14 is connected to the pressure plate 2.

[0025] The bottom of the clamping lever 3 is also equipped with a pressure wheel 31, which is set opposite to the pressure plate 2. The pressure wheel 31 makes it easy to insert into and remove from the rail, turning the sliding friction with the rail into rolling friction, making the operation more labor-saving, reducing the wear of the clamping lever 3, and improving its service life.

[0026] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A clamping device for a rail drilling machine, characterized in that, include The clamping seat (1) is provided with a connecting arm (11); A clamping plate (2) is provided on both sides of the bottom of the clamping seat (1); The clamping lever (3) is rotatably mounted on the connecting arm (11), with one end positioned opposite to the pressing plate (2); The clamping shaft (4) is rotatably located at the other end of the clamping rocker arm (3) and is provided with a clamping threaded hole; A clamping screw (6) is provided on the clamping threaded hole; A clamping head (7) is rotatably located at one end of the clamping screw (6); The first rotating shaft (51) is located on the clamping head (7); The second rotating shaft (52) is provided on the clamping seat (1); The locking block (9) is rotatably connected at both ends to the first rotating shaft (51) and the second rotating shaft (52) respectively, and has a locking surface (91) opposite to the top of the clamping seat (1); and A handle (81) is movably located at the other end of the clamping screw (6); When clamping the rail, the clamping screw (6) causes the locking surface (91) to abut against the clamping seat (1), so that one end of the clamping lever (3) is clamped to both sides of the rail by the pressure plate (2); when the rail is released, the locking surface (91) moves away from the clamping seat (1), and one end of the clamping lever (3) and the pressure plate (2) move away from both sides of the rail.

2. The clamping device for a rail drilling machine according to claim 1, characterized in that, Also includes: Adjusting sleeve (92) is provided on the clamping seat (1) and is disposed opposite to the locking surface (91).

3. The clamping device for a rail drilling machine according to claim 1, characterized in that, The clamping seat (1) is provided with a rotating groove (13), and one end of the locking block (9) is rotatably disposed in the rotating groove (13).

4. The clamping device for a rail drilling machine according to claim 1, characterized in that, Also includes: A handle (82) is provided on the top of the clamping seat (1).

5. The clamping device for a rail drilling machine according to claim 1, characterized in that, The clamping seat (1) is also provided with a connecting rod (14), which is connected to the pressing plate (2).

6. The clamping device for a rail drilling machine according to claim 1, characterized in that, It also includes a clamping wheel (31), which is rotatably disposed at the end of the clamping rocker arm (3) and is disposed opposite to the clamping plate (2).

Images