Portable rail clamping device special for cutting rails and steel rails

Abstract

The invention relates to the technical field of rail clamping devices, in particular to a portable rail clamping device special for cutting rails and steel rails, which comprises a clamping frame, a rotating shaft is fixedly connected to the inner side of the top of the clamping frame, a folding mounting frame is arranged outside the rotating shaft, and an inclined leveling assembly is rotatably arranged in the clamping frame. A clamping quick-release assembly is arranged in the clamping frame and comprises a rotating sleeve rotationally connected with the outer wall of the rotating shaft, the bottom of the rotating sleeve is rotationally connected with an adjusting screw rod, the bottom of the adjusting screw rod is fixedly connected with a handheld handle, the surface of the adjusting screw rod is in threaded connection with a threaded sleeve, and the front end and the rear end of the threaded sleeve are both fixedly connected with limiting rods; the clamping and quick-release assembly further comprises a fixing shaft rotationally connected to the right side of the interior of the clamping frame, through cooperation of the structure, when the rail clamping device is taken out, only the adjusting screw needs to be rotated by a small number of turns, the effect of quickly releasing the clamping frame is achieved, and therefore the cutting efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail clamping devices, and in particular to a portable rail clamping device for specifically cutting railway rails. Background Art

[0002] Rail tracks and steel rails are important components of railway transportation. Due to the extremely large weight of the train wheels, under the repeated action of the dynamic load of the train, these micro fatigue sources will gradually expand to form nuclear damage. When the nuclear damage develops to the rail surface, it will cause the steel rail to break. After the rail breaks, the rail needs to be welded and repaired. Before welding the rail, it is necessary to cut off the damaged part to remove possible cracks, corrosion or fatigue areas, and the fresh surface after cutting can provide better welding conditions, which helps the fusion of the weld metal and the base metal, thereby improving the quality of the welded joint.

[0003] In the prior art, when cutting rails, a special steel rail sawing machine is usually used to cut the rails. During use, the rail clamping device on the sawing machine is clamped on the rail, and the main body of the sawing machine is installed on the rail clamping device. The main body of the sawing machine can be held by hand to cut the rail. When the traditional rail clamping device clamps the rail, it is necessary to place the rail clamping device at the rail and rotate the screw used for clamping to clamp the side end face of the rail. However, in the actual clamping process, the stability of clamping the side end face of the rail is average, which affects the clamping effect. In the prior art, there is also a clamping method in which one side of the rail is clamped obliquely. After cutting is completed, when the rail clamping device needs to be taken out, it is necessary to manually rotate the screw a large number of turns to take out the rail clamping device upward, resulting in the inability to quickly take out the rail clamping device after use, thus affecting the cutting efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a portable rail clamping device for specifically cutting railway rails, which can achieve the effect of quickly disengaging the clamping frame by rotating the adjusting screw a small number of turns when taking out the rail clamping device, thereby improving the cutting efficiency, so as to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: a portable rail clamping device for special cutting of railway rails, including a clamping frame. Inside the top of the clamping frame, a rotating shaft is fixedly connected. Outside the rotating shaft, a folding mounting frame is arranged. Inside the clamping frame, an inclined leveling component is rotatably arranged. Inside the clamping frame, a clamping quick-release component is arranged. The clamping quick-release component includes a rotating sleeve rotatably connected to the outer wall of the rotating shaft. At the bottom of the rotating sleeve, an adjusting screw rod is rotatably connected. At the bottom of the adjusting screw rod, a hand grip is fixedly connected. On the surface of the adjusting screw rod, a threaded sleeve is threadedly connected. At both the front and rear ends of the threaded sleeve, limiting rods are fixedly connected. The clamping quick-release component further includes a fixed shaft rotatably connected to the right side inside the clamping frame. In the middle part of the outer wall of the fixed shaft, a flipping frame is fixedly connected. Between the rear end of the flipping frame and the clamping frame, a torsion spring is fixedly connected. At the top right part of the flipping frame, a clamping groove is opened.

[0006] Preferably, the inclined leveling component includes an adjusting plate rotatably connected inside the clamping frame. On the right side of the adjusting plate, an elastic band is fixedly connected. The side of the elastic band away from the adjusting plate is fixedly connected to the right side inside the clamping frame. The inclined leveling component further includes a limiting groove opened at the inner top of the clamping frame. Inside the limiting groove, a moving block is movably connected. At the bottom of the moving block, an extrusion plate is fixedly connected. At the inner top of the limiting groove, an inclined block is fixedly connected. The bottom of the inclined block is inclined. The inclined leveling component further includes a first electric telescopic rod fixedly connected to the left side inside the clamping frame. The output shaft of the first electric telescopic rod extends into the limiting groove and is movably connected to the moving block.

[0007] Preferably, a triggering component is arranged on the left side inside the clamping frame. The triggering component includes a groove opened on the left side inside the clamping frame. At the inner top of the groove, a fixed rod is fixedly connected. At the bottom of the fixed rod, a bearing is fixedly installed. The inner ring of the bearing is fixedly connected to a round shaft. At the front and rear ends of the round shaft, a fixed frame is fixedly connected together. At the bottom of both sides of the fixed frame, counterweight blocks are fixedly connected.

[0008] Preferably, on the right side of both the front and rear ends of the first electric telescopic rod, small blocks are fixedly connected. Inside the moving block, small grooves are opened at positions corresponding to the small blocks.

[0009] Preferably, rollers are rotatably connected to both the top of the moving block and the bottom of the extrusion plate.

[0010] Preferably, a liquid medium is arranged inside the groove. Inside the liquid medium, cotton wadding is arranged.

[0011] Preferably, a limiting component is arranged on the left side inside the clamping frame. The limiting component includes a lifting frame slidably connected inside the clamping frame. A limiting frame is fixedly connected to the bottom of the lifting frame. A U-shaped elastic sheet is fixedly connected between the top of the lifting frame and the clamping frame. The limiting component further includes a storage hole opened on the inner side of the left part of the clamping frame. An elastic bladder is fixedly connected to the inner wall of the storage hole. A conduit is fixedly inserted between the sliding connection of the lifting frame and the clamping frame and the storage hole.

[0012] Preferably, a flexible film is fixedly connected between the periphery of the top of the lifting frame and the clamping frame.

[0013] Preferably, a cavity is opened at the bottom of the counterweight block. A first elastic film is fixedly connected to the bottom of the cavity. A pressure sensor is fixedly connected to the inner side of the cavity. A concave hole is opened at the bottom of the groove. A second elastic film is fixedly connected to the top of the concave hole.

[0014] Preferably, a second electric telescopic rod is fixedly connected to the bottom of the inner part of the clamping frame where the concave hole is located. A top plate is fixedly connected to the output shaft of the second electric telescopic rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. Through the action of the clamping and quick-release component, when taking out the rail clamping device, only a small number of turns of the adjusting screw need to be rotated to achieve the effect of quickly disengaging the clamping frame, thereby improving the cutting efficiency;

[0017] 2. Through the cooperation of the leveling component and the triggering component, the angle of the clamping frame can be automatically adjusted so that when clamping, the top side end face of the rail on the inner side of the left part of the clamping frame can be ensured to be in contact, which can improve the stability of rail clamping;

[0018] 3. Through the action of the cotton wool and the liquid medium, strong swinging of the counterweight block and the fixed frame is avoided, which is beneficial to improving the accuracy of adjusting the fixed rod to a vertical state and preventing the position of the fixed rod from not being in a vertical state after adjustment, resulting in affecting the clamping firmness;

[0019] 4. Through the cooperation of structures such as the cavity, the first elastic film, the pressure sensor, the concave hole, the second elastic film, and the second electric telescopic rod, it is ensured that the bottom of the counterweight block needs to be inserted into the liquid medium, thereby ensuring that the fixed frame will not swing violently during adjustment and improving the adjustment accuracy. Description of the Drawings

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is the overall structure view of the present invention;

[0022] Figure 2 It is the semi-sectional structure schematic diagram of the present invention;

[0023] Figure 3 It is the semi-sectional structure schematic diagram of the clamping frame of the present invention

[0024] Figure 4 For the present invention Figure 3 The enlarged view at A of;

[0025] Figure 5 It is the partial structure schematic diagram of the clamping quick-release component of the present invention;

[0026] Figure 6 It is the partial side view structure schematic diagram of the clamping frame of the present invention;

[0027] Figure 7 It is the left partial semi-sectional structure schematic diagram of the clamping frame of the present invention;

[0028] Figure 8 It is the semi-sectional structure schematic diagram of the counterweight of the present invention.

[0029] Explanation of reference numerals:

[0030] 1. Clamping frame; 2. Mounting frame; 3. Leveling component; 31. Adjusting plate; 32. Elastic band; 33. Limiting groove; 34. Moving block; 35. Extrusion plate; 36. Tilt block; 37. First electric telescopic rod; 38. Small block; 39. Small groove; 310. Roller; 4. Trigger component; 41. Groove; 42. Fixed rod; 43. Bearing; 44. Round shaft; 45. Fixed frame; 46. Counterweight; 5. Liquid medium; 6. Cotton wool; 7. Clamping quick-release component; 71. Rotating sleeve; 72. Adjusting screw; 73. Handheld handle; 74. Threaded sleeve; 75. Limiting rod; 76. Fixed shaft; 77. Flipping frame; 78. Torsion spring; 79. Card slot; 8. Limiting component; 81. Lifting frame; 82. Limiting frame; 83. U-shaped elastic sheet; 84. Storage hole; 85. Elastic bladder; 86. Flexible membrane; 87. Duct; 9. Top plate; 10. Rotating shaft; 11. Second electric telescopic rod; 12. Concave hole; 13. Second elastic membrane; 15. Cavity; 16. First elastic membrane; 17. Pressure sensor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 5 The present invention provides a technical solution: a portable rail clamping device for cutting rails, comprising a clamping frame 1, a rotating shaft 10 is fixedly connected to the inner side of the top of the clamping frame 1, a folding mounting frame 2 is arranged outside the rotating shaft 10, a tilting and leveling component 3 is rotatably arranged inside the clamping frame 1, a clamping quick-release component 7 is arranged inside the clamping frame 1, and the clamping quick-release component 7 comprises a rotating sleeve 71 rotatably connected to the outer wall of the rotating shaft 10, and an adjusting screw 72 is rotatably connected to the bottom of the rotating sleeve 71, The bottom of the adjusting screw 72 is fixedly connected to a handle 73, the surface of the adjusting screw 72 is threadedly connected to a threaded sleeve 74, the front and rear ends of the threaded sleeve 74 are fixedly connected to limiting rods 75, the clamping quick-release assembly 7 also includes a fixed shaft 76 rotatably connected to the right side of the clamping frame 1, the middle part of the outer wall of the fixed shaft 76 is fixedly connected to a flip frame 77, the rear end of the flip frame 77 is fixedly connected to the clamping frame 1 with a torsion spring 78, and the top right part of the flip frame 77 is provided with a slot 79.

[0033] By adopting the above technical scheme, the rotating sleeve 71 can swing around the rotating shaft 10. When it is necessary to clamp the rail, first place the inner top of the clamping frame 1 at the top position of the rail, then manually rotate the flip frame 77, and insert the limiting rods 75 on both sides of the threaded sleeve 74 into the slots 79. At this time, manually rotate the hand handle 73 to rotate the adjusting screw 72. At this time, the top of the adjusting screw 72 rotates in the rotating sleeve 71, and at this time, under the action of the threaded connection, the threaded sleeve 74 moves toward the hand handle 73, causing the flip frame 77 to flip and swing. The end of the flip frame 77 away from the slot 79 rotates to support the top and bottom side of the rail. In this way, one end is tilted to clamp the rail, which can improve the clamping effect of the rail and help improve the stability of the clamping of the rail clamping device.

[0034] When the rail cutting is completed and the rail clamping device needs to be taken out, the handle 73 is slightly turned to make the adjusting screw 72 rotate in the opposite direction to the previous direction, and the flip frame 77 is manually moved to make the limiting rod 75 leave the slot 79. At this time, under the elastic force of the torsion spring 78, the fixed shaft 76 and the flip frame 77 flip over to cancel the clamping of the rail, and the clamping frame 1 can be quickly taken out.

[0035] With such a design, when removing the rail clamping device, only a small number of turns of the adjusting screw 72 need to be rotated to achieve the effect of quickly disengaging the clamping frame 1, thereby improving the cutting efficiency.

[0036] Specifically, as Figure 1 and Figure 5 shown, the tilt leveling assembly 3 includes an adjusting plate 31 rotatably connected inside the clamping frame 1. A elastic band 32 is fixedly connected to the right side of the adjusting plate 31. The side of the elastic band 32 away from the adjusting plate 31 is fixedly connected to the right side inside the clamping frame 1. The tilt leveling assembly 3 further includes a limiting groove 33 opened at the inner top of the clamping frame 1. A moving block 34 is movably connected inside the limiting groove 33. A pressing plate 35 is fixedly connected to the bottom of the moving block 34. An inclined block 36 is fixedly connected to the inner top of the limiting groove 33. The bottom of the inclined block 36 is inclined. The tilt leveling assembly 3 further includes a first electric telescopic rod 37 fixedly connected to the left side inside the clamping frame 1. The output shaft of the first electric telescopic rod 37 extends into the limiting groove 33 and is movably connected to the moving block 34. A trigger assembly 4 is arranged on the left side inside the clamping frame 1. The trigger assembly 4 includes a groove 41 opened on the left side inside the clamping frame 1. A fixing rod 42 is fixedly connected to the inner top of the groove 41. A bearing 43 is fixedly installed at the bottom of the fixing rod 42. A circular shaft 44 is fixedly connected to the inner ring of the bearing 43. The front and rear ends of the circular shaft 44 are jointly fixedly connected with a fixing frame 45. Counterweight blocks 46 are fixedly connected to both bottom sides of the fixing frame 45. Small blocks 38 are fixedly connected to the right sides of the front and rear ends of the first electric telescopic rod 37. Small grooves 39 are opened at the corresponding positions of the small blocks 38 inside the moving block 34. Roller shafts 310 are rotatably connected to the top of the moving block 34 and the bottom of the pressing plate 35.

[0037] By adopting the above technical solution, when it is necessary to cut the rails in the curved section, in the initial state, through the output expansion and contraction of the first electric telescopic rod 37, the moving block 34 is moved to the middle part of the limiting groove 33. At this time, the adjusting plate 31 is in a flat state. When holding the lower part of the folding mounting bracket 2 and sleeving the inner side of the clamping bracket 1 on the upper end part of the rail, and making the top surface of the rail fit with the bottom surface of the adjusting plate 31. When the top surface of the rail is in a flat state, the bottom surface of the adjusting plate 31 just fits parallel to the rail. After fitting, part of the clamping bracket 1 is in an inclined state, and the fixing rod 42 is in a vertical state. Since the weights of the two counterweights 46 are the same, the fixing frame 45 is in a horizontal state at this time. A distance sensor is fixedly installed at the inner top of the groove 41. By measuring the distance through ranging, it is judged that the fixing frame 45 is horizontal. At this time, the first electric telescopic rod 37 will not be triggered to expand and contract. At this time, the limiting rods 75 on both sides of the threaded sleeve 74 are inserted into the clamping grooves 79. At this time, manually rotate the handgrip 73 to make the adjusting screw rod 72 rotate. At this time, the top of the adjusting screw rod 72 rotates in the rotating sleeve 71. And at this time, under the action of threaded connection, the threaded sleeve 74 moves in the direction close to the handgrip 73, making the turning frame 77 turn and swing. One end of the turning frame 77 away from the clamping groove 79 rotates and abuts against the top and bottom sides of the rail to complete rail clamping.

[0038] When it is necessary to cut the rails in the curved section, when the train is running on the curve, a large centrifugal force will be generated. This force will act on one side of the rail, resulting in increased wear on that side, so that the top surface of the rail is not flat but in an inclined state. At this time, when holding the lower part of the folding mounting bracket 2 and sleeving the inner side of the clamping bracket 1 on the upper end part of the rail, since the top surface of the rail is not flat, when the top surface of the rail fits with the bottom surface of the adjusting plate 31, part of the clamping bracket 1 is in an inclined state. At this time, the fixing rod 42 is not in a vertical state. Under the action of gravity, the fixing frame 45 and the circular shaft 44 deflect and rotate, resulting in the fixing frame 45 not being in a horizontal state at this time. At this time, the distance sensor measures the distance through ranging and judges that the fixing frame 45 is not in a horizontal state, so as to control the output shaft of the first electric telescopic rod 37 to expand and contract through an external controller. When the output shaft of the first electric telescopic rod 37 expands and contracts, the moving block 34 drives the pressing plate 35 to move in the left-right direction, and under the action of the small block 38 and the small groove 39, the moving block 34 can move in the up-down direction relative to the output shaft of the first electric telescopic rod 37.

[0039] The elastic band 32 is made of high-elastic rubber material. During the process of the moving block 34 moving inside the limiting groove 33, due to the inclined bottom of the inclined block 36, the horizontal height of the moving block 34 changes, so that the horizontal position of the pressing plate 35 also changes accordingly. When the horizontal position of the pressing plate 35 becomes lower, the bottom of the pressing plate 35 presses on the adjusting plate 31, causing the adjusting plate 31 to tilt. When the horizontal position of the pressing plate 35 becomes higher, under the elastic force of the elastic band 32 itself, the adjusting plate 31 tilts. In this way, the output shaft of the first electric telescopic rod 37 can be extended and retracted to adjust the adjusting plate 31 to an appropriate angle, so that the fixing rod 42 can be adjusted to a vertical state. At this time, the distance sensor judges the horizontal level of the fixing frame 45 through distance measurement, so that the output shaft of the first electric telescopic rod 37 stops extending and retracting for adjustment, and then the clamping quick-release assembly 7 is used for rail clamping.

[0040] Such a design enables the automatic adjustment of the angle of the clamping frame 1, so that when clamping, it is ensured that the top side end face of the inner rail on the left side of the clamping frame 1 fits, which can improve the stability of rail clamping.

[0041] The design of the roller 310 helps to reduce the friction during movement.

[0042] It should be noted that a battery needs to be installed inside the clamping frame 1 to supply power to the electrical equipment inside the device, and a battery switch is installed. When cutting and clamping the rail is required, the battery switch needs to be turned on so that the electrical equipment is powered on.

[0043] Specifically, as Figure 2 and Figure 7 shown, a liquid medium 5 is arranged inside the groove 41, and cotton wool 6 is arranged inside the liquid medium 5.

[0044] By adopting the above technical solutions, the gravity of the cotton wool 6 itself is small and it floats on the surface of the liquid medium 5, which can change the surface tension of the top surface of the liquid medium 5, making the surface part of the liquid medium 5 relatively stable and reducing its strong shaking. When the fixing frame 45 is in a horizontal state, the bottom area of the counterweight 46 is below the top surface of the liquid medium 5. Such a design can, under the action of the cotton wool 6 and the liquid medium 5, avoid the strong swinging of the counterweight 46 and the fixing frame 45 when adjusting the angle of the adjusting plate 31, thus facilitating the improvement of the accuracy of adjusting the fixing rod 42 to a vertical state and avoiding the position of the fixing rod 42 not being in a vertical state after adjustment.

[0045] Specifically, as Figure 2 and Figure 7As shown, a limiting component 8 is arranged on the left side inside the clamping frame 1, and the limiting component 8 includes a lifting frame 81 slidably connected to the inside of the clamping frame 1, a limiting frame 82 is fixedly connected to the bottom of the lifting frame 81, a U-shaped spring piece 83 is fixedly connected between the top of the lifting frame 81 and the clamping frame 1, and the limiting component 8 also includes a storage hole 84 opened on the inner side of the left part of the clamping frame 1, an elastic bag 85 is fixedly connected to the inner wall of the storage hole 84, a flexible membrane 86 is fixedly connected around the top of the lifting frame 81 and the clamping frame 1, and a catheter 87 is fixedly inserted between the sliding connection between the lifting frame 81 and the clamping frame 1 and the storage hole 84.

[0046] By adopting the above technical solution, during the stage of tilt adjustment, since clamping is not performed at this time, the rail does not squeeze the elastic capsule 85 at this time, and under the elastic force of the U-shaped spring piece 83 at this time, the lifting frame 81 and the limiting frame 82 are both at a higher position. At this time, since the bottom of the limiting frame 82 is far away from the top surface of the fixed frame 45, it will not affect the swing of the fixed frame 45. When the adjustment is completed, when clamping is performed, the clamping quick release assembly 7 clamps the rail so that the inner side of the left part of the clamping frame 1 fits the top left position of the rail. At this time, the elastic capsule 85 is squeezed and the elastic capsule 85 The gas in the container enters the conduit 87 and then enters the top position of the lifting frame 81. The design of the flexible membrane 86 ensures the sealing performance of the place without affecting the movement of the lifting frame 81. At this time, under the pressure of the gas, the lifting frame 81 moves downward with the limiting frame 82, so that the bottom of the limiting frame 82 is attached to the top of the fixed frame 45, which plays a role in limiting the fixed frame 45, avoiding the tilt of the fixed frame 45 due to the shaking during clamping in the subsequent process, thereby avoiding the first electric telescopic rod 37 from extending and retracting after the adjustment is completed, thereby avoiding the tilt of the clamping frame 1, and further improving the stability of the clamping.

[0047] Specifically, Figure 2 and Figure 8 As shown, a cavity 15 is provided at the bottom of the counterweight block 46, a first elastic membrane 16 is fixedly connected to the bottom of the cavity 15, an air pressure sensor 17 is fixedly connected to the inner side of the cavity 15, a concave hole 12 is provided at the bottom of the groove 41, a second elastic membrane 13 is fixedly connected to the top of the concave hole 12, a second electric telescopic rod 11 is fixedly connected to the bottom of the concave hole 12 inside the clamping frame 1, and a top plate 9 is fixedly connected to the output shaft of the second electric telescopic rod 11.

[0048] By adopting the above technical solution, in order to ensure that the fixed frame 45 does not swing violently during adjustment, the bottom of the counterweight block 46 is required to be inserted into the liquid medium 5. However, due to the shaking of the clamping frame 1, part of the liquid medium 5 may not be able to smoothly flow down and gather, resulting in a decrease in the liquid level. When the liquid level is not enough to submerge the bottom position of the counterweight block 46, the first elastic membrane 16 is not deformed by the pressure of the liquid medium 5. The air pressure sensor 17 detects the air pressure in the cavity 15 and determines that the liquid level is low. At this time, the output shaft of the second electric telescopic rod 11 is extended, so that the top plate 9 moves upward in the recessed hole 12. At this time, the second elastic membrane 13 bulges, which is convenient for reducing the volume of the bottom area of ​​the groove 41, and can raise the liquid level, ensuring that the bottom of the counterweight block 46 is inserted into the liquid medium 5, thereby ensuring that the fixed frame 45 does not swing violently during adjustment, thereby improving the accuracy of adjustment.

[0049] It should be noted that the second elastic membrane 13 and the first elastic membrane 16 are made of corrosion-resistant materials.

[0050] In order to ensure stability during clamping, a pressure sensor can be set on the inner side of the left part of the clamping frame 1 to detect the pressure during clamping, so as to detect whether the equipment clamps the track tightly, and a corresponding processor is set. When the pressure sensor detects insufficient pressure, the processor sends an alarm signal.

[0051] Working principle: When it is necessary to clamp the rail, first place the inner top of the clamping frame 1 at the top of the rail, then manually rotate the flip frame 77, and insert the limiting rods 75 on both sides of the threaded sleeve 74 into the slots 79, then manually rotate the hand handle 73 to rotate the adjusting screw 72, and the top of the adjusting screw 72 rotates in the rotating sleeve 71, and at this time, under the action of the threaded connection, the threaded sleeve 74 moves toward the hand handle 73, causing the flip frame 77 to flip and swing, and the end of the flip frame 77 away from the slot 79 rotates By holding the top and bottom sides of the rails against each other, one end of the rails can be tilted to clamp the rails, which can improve the clamping effect of the rails and help improve the stability of the clamping of the rail clamping device. When the rail cutting is completed and the rail clamping device needs to be taken out, the handle 73 is slightly turned to make the adjusting screw 72 rotate in the opposite direction to the previous direction, and the flip frame 77 is manually moved to make the limiting rod 75 leave the slot 79. At this time, under the elastic force of the torsion spring 78, the fixed shaft 76 and the flip frame 77 are flipped to cancel the clamping of the rails. At this time, the clamping frame 1 can be quickly taken out.

[0052] When it is necessary to cut the rails in the curved section, in the initial state, through the output expansion and contraction of the first electric telescopic rod 37, the moving block 34 is moved to the middle part of the limiting groove 33. At this time, the adjusting plate 31 is in a flat state. When holding the lower part of the handheld folding mounting frame 2 and sleeving the inner side of the clamping frame 1 on the upper end part of the rail, and making the top surface of the rail fit with the bottom surface of the adjusting plate 31. When the top surface of the rail is in a flat state, the bottom surface of the adjusting plate 31 just fits parallel to the rail. After fitting, part of the clamping frame 1 is in an inclined state, and the fixed rod 42 is in a vertical state. Since the weights of the two counterweights 46 are the same, the fixed frame 45 is in a horizontal state at this time. A distance sensor is fixedly installed at the inner top of the groove 41. By measuring the distance, it is judged whether the fixed frame 45 is horizontal. At this time, the first electric telescopic rod 37 will not be triggered to expand and contract. At this time, the limiting rods 75 on both sides of the threaded sleeve 74 are clamped into the card slot 79. At this time, manually rotate the handheld handle 73 to make the adjusting screw rod 72 rotate. At this time, the top of the adjusting screw rod 72 rotates in the rotating sleeve 71. And at this time, under the action of threaded connection, the threaded sleeve 74 moves in the direction close to the handheld handle 73, making the flipping frame 77 flip and swing. One end of the flipping frame 77 away from the card slot 79 rotates and abuts against the top and bottom sides of the rail to complete rail clamping.

[0053] When sleeving the inner side of the clamping frame 1 on the upper end part of the rail with the lower part of the handheld folding mounting frame 2, since the top surface of the rail is not flat, when the top surface of the rail fits with the bottom surface of the adjusting plate 31, part of the clamping frame 1 is in an inclined state. At this time, the fixed rod 42 is not in a vertical state. Under the action of gravity, the fixed frame 45 and the circular shaft 44 shift and rotate, resulting in the fixed frame 45 not being in a horizontal state at this time. At this time, the distance sensor measures the distance to judge that the fixed frame 45 is not in a horizontal state, so as to control the output shaft of the first electric telescopic rod 37 to expand and contract through the external controller. When the output shaft of the first electric telescopic rod 37 expands and contracts, the moving block 34 drives the pressing plate 35 to move in the left-right direction, and under the action of the small block 38 and the small groove 39, the moving block 34 can move in the up-down direction with the output shaft of the first electric telescopic rod 37.

[0054] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A portable rail clamping device for cutting rails, comprising a clamping frame (1), characterized in that: A rotating shaft (10) is fixedly connected to the inner side of the top of the clamping frame (1), a folding mounting frame (2) is arranged outside the rotating shaft (10), a tilting and leveling assembly (3) is rotatably arranged inside the clamping frame (1), and a clamping quick-release assembly (7) is arranged inside the clamping frame (1); The clamping quick-release assembly (7) comprises a rotating sleeve (71) rotatably connected to the outer wall of the rotating shaft (10); the bottom of the rotating sleeve (71) is rotatably connected to an adjusting screw (72); the bottom of the adjusting screw (72) is fixedly connected to a hand grip (73); the surface of the adjusting screw (72) is threadedly connected to a threaded sleeve (74); the front and rear ends of the threaded sleeve (74) are fixedly connected to limiting rods (75); the clamping quick-release assembly (7) also comprises a fixed shaft (76) rotatably connected to the right side of the clamping frame (1); the middle part of the outer wall of the fixed shaft (76) is fixedly connected to a flip frame (77); a torsion spring (78) is fixedly connected between the rear end of the flip frame (77) and the clamping frame (1); and a clamping slot (79) is provided at the top of the right part of the flip frame (77).

2. A portable rail clamping device for cutting rails according to claim 1, characterized in that: The tilting and leveling assembly (3) comprises an adjusting plate (31) rotatably connected to the inside of the clamping frame (1); an elastic band (32) is fixedly connected to the right side of the adjusting plate (31); a side of the elastic band (32) away from the adjusting plate (31) is fixedly connected to the right side of the inside of the clamping frame (1); the tilting and leveling assembly (3) also comprises a limiting groove (33) provided at the top of the inner side of the clamping frame (1); a moving block (34) is movably connected to the inside of the limiting groove (33); a squeezing plate (35) is fixedly connected to the bottom of the moving block (34); a tilting block (36) is fixedly connected to the top of the inner side of the limiting groove (33); the bottom of the tilting block (36) is tilted; the tilting and leveling assembly (3) also comprises a first electric telescopic rod (37) fixedly connected to the left side of the inside of the clamping frame (1); an output shaft of the first electric telescopic rod (37) extends into the inside of the limiting groove (33) and is movably connected to the moving block (34).

3. A portable rail clamping device for cutting rails according to claim 2, characterized in that: A trigger assembly (4) is provided on the left side of the interior of the clamping frame (1), and the trigger assembly (4) comprises a groove (41) opened on the left side of the interior of the clamping frame (1), a fixing rod (42) is fixedly connected to the top of the inner side of the groove (41), a bearing (43) is fixedly installed on the bottom of the fixing rod (42), the inner ring of the bearing (43) is fixedly connected to a round shaft (44), the front and rear ends of the round shaft (44) are fixedly connected to a fixing frame (45), and the bottoms of both sides of the fixing frame (45) are fixedly connected to counterweight blocks (46).

4. A portable rail clamping device for cutting rails according to claim 3, characterized in that: Small blocks (38) are fixedly connected to the right sides of both front and rear ends of the first electric telescopic rod (37), and a small groove (39) is provided inside the moving block (34) at a position corresponding to the small block (38).

5. A portable rail clamping device for cutting rails according to claim 4, characterized in that: The top of the moving block (34) and the bottom of the squeezing plate (35) are both rotatably connected to rollers (310).

6. A portable rail clamping device for cutting rails according to claim 5, characterized in that: A liquid medium (5) is arranged inside the groove (41), and cotton wool (6) is arranged inside the liquid medium (5).

7. A portable rail clamping device for cutting rails according to claim 6, characterized in that: A limiting assembly (8) is arranged on the left side inside the clamping frame (1), and the limiting assembly (8) comprises a lifting frame (81) slidably connected inside the clamping frame (1), a limiting frame (82) is fixedly connected to the bottom of the lifting frame (81), a U-shaped spring sheet (83) is fixedly connected between the top of the lifting frame (81) and the clamping frame (1), and the limiting assembly (88) further comprises a storage hole (84) opened on the inner side of the left part of the clamping frame (1), an elastic bag (85) is fixedly connected to the inner wall of the storage hole (84), and a guide tube (87) is fixedly inserted between the sliding connection between the lifting frame (81) and the clamping frame (1) and the storage hole (84).

8. A portable rail clamping device for cutting rails according to claim 7, characterized in that: A flexible membrane (86) is fixedly connected between the top periphery of the lifting frame (81) and the clamping frame (1).

9. A portable rail clamping device for cutting rails according to claim 8, characterized in that: A cavity (15) is provided at the bottom of the counterweight (46), a first elastic membrane (16) is fixedly connected to the bottom of the cavity (15), an air pressure sensor (17) is fixedly connected to the inner side of the cavity (15), a concave hole (12) is provided at the bottom of the groove (41), and a second elastic membrane (13) is fixedly connected to the top of the concave hole (12).

10. A portable rail clamping device for cutting rails according to claim 9, characterized in that: A second electric telescopic rod (11) is fixedly connected to the bottom of the concave hole (12) inside the clamping frame (1), and an output shaft of the second electric telescopic rod (11) is fixedly connected to a top plate (9).

Images