Quick dismounting and clamping device of single-side rail rail waist polisher

Abstract

This utility model relates to a quick-release clamping device for a single-sided rail web grinder, comprising an inverted L-shaped main frame, a convex-edge rail wheel, a movable side top plate, a rail jaw clamping wheel, a rail clamping top clip, a moving handle, a fixed handle, a T-shaped vertical sliding plate, a pneumatic support rod, an electric grinder main unit, a shock absorber, and a force-relieving lateral pull handle. The quick-release clamping device designed in this utility model adopts a balanced fixing method with two-point support on one side for rail clamping and downward pressure on the opposite side's center of gravity. The main frame of the clamping device is made of lightweight metal alloy, and the clamping device structure is extremely simple and lightweight. By pressing down on one side of the handle, the rail is clamped and locked, while on the other side, the grinding wheel presses firmly against the rail, and the device is fixed by the natural downward pressure of the center of gravity. This quick-release clamping device has an ingenious structural design, is easy to install and disassemble, and is simple to operate. It can quickly fix the rail web grinder to or remove it from the rail, effectively reducing on-site construction labor intensity and improving work efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of rail grinding machines, and specifically relates to a quick-release clamping device for a single-sided rail web grinding machine. Background Technology

[0002] Rail grinding is an important process required both before and after rail welding. Common rail grinding includes rail head grinding, rail base grinding, and rail web grinding. In factory welding operations, large welding equipment is generally used, along with automated auxiliary devices for pre- and post-weld assembly lines. The grinding process in all three positions can be completed on an automated line, resulting in a high degree of automation. However, when rails are welded on-site, it is not possible to use the large-scale automated welding and auxiliary equipment used in factory welding. On-site grinding is generally done manually, with workers using handheld abrasive grinders to grind the rail head, rail base, and rail web. In some areas, small, manual rail head grinders are used for rail head grinding, which is more efficient than manual grinding. Currently, there is no readily available equipment or technology for grinding the rail base and rail web, especially for on-site rail web grinding. The reason for this is the unique location of the rail web and rail base. The rail web is sandwiched between the rail head and rail base. In cross-section, the rail head and rail base protrude outwards, while the rail web becomes the concave part. Therefore, it is difficult to avoid interference between the rail head and rail base when grinding the rail web. Another reason is that the surface of the rail web is not a standard plane. The two sides of the rail web are symmetrical variable curvature surfaces. This requires the grinding of the rail web to adapt to the curvature changes at different positions of the rail web, which greatly increases the technical difficulty of grinding.

[0003] Currently, all on-site grinding of the rail web is done manually with handheld grinders. Workers typically need to grind a 50cm length on either side of the weld to completely remove the rust layer and expose the bright base material. The grinding process is time-consuming and labor-intensive, and the grinding quality varies depending on the operator. In severe cases, it can significantly affect the welding quality, causing defects such as incomplete welding or porosity at the rail web. Utility Model Content

[0004] In view of this, the purpose of this utility model is to address the shortcomings of the existing technology by providing a quick-assembly and clamping device for a single-sided rail web grinding machine. This device assists in the installation and fixation of the single-sided rail web grinding machine on the rail head, thereby solving the problem that on-site rail web grinding must be done manually and there is no automatic or semi-automatic rail web grinding equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A quick-assembly and clamping device for a single-sided rail web grinding machine includes an inverted L-shaped main frame, a convex edge rail wheel, a movable side top plate, a rail jaw clamping wheel, a rail clamping top clip, a moving handle, a fixed handle, a T-shaped vertical sliding plate, a pneumatic support rod, an electric grinding main unit, a shock absorber, and a force-relieving lateral pull handle.

[0007] One side of the inverted L-shaped main frame is rotatably connected to the movable side top plate via a shaft. The inverted L-shaped main frame is connected to the convex side track wheel via two track wheel shafts below this side. The convex side track wheel is placed on the rail head. The rail jaw clamping wheel is installed on the clamping wheel shaft at the end of the movable side top plate. The movable side top plate is rotatably connected to the rail clamping top clamp via a top clamp shaft. The movable side top plate is connected to the moving handle via screws. The middle part of the inverted L-shaped main frame is fixedly connected to the fixed handle.

[0008] The other side of the inverted L-shaped main frame is fixedly connected to two pneumatic support rods via brackets. The pneumatic support rods are horizontal and parallel to the inverted L-shaped main frame. The telescopic rod ends of the pneumatic support rods are connected to shock absorbers. There are fixing holes on the top of the shock absorbers, which are connected to the two ends of the unloading side pull handles respectively. The two shock absorbers are connected to two T-shaped vertical slide plates on the left and right sides below by screws. The electric grinder is connected to the two symmetrical T-shaped vertical slide plates on both sides through a mechanical connection device, and the electric grinder can slide back and forth under the drive of the two T-shaped vertical slide plates.

[0009] When the convex edge track wheel is placed on the rail, the rail jaw clamping wheel can abut against the rail jaw on one side of the rail, and the rail clamping top plate can automatically clamp the movable side top plate, keeping the movable side top plate in a downward state. Under the thrust of the pneumatic support rod, the grinding wheel of the electric grinder can abut against the rail web on the other side of the rail.

[0010] To better realize this utility model, further optimization is made to the above structure. The inverted L-shaped main frame is rotatably connected to the movable side top plate through the double shaft of the side top plate, and a return spring is installed in the side top plate shaft hole of the movable side top plate.

[0011] To better realize this utility model, the above structure is further optimized, and the movable side top plate has two bends, one small and one large, when viewed from the side.

[0012] To better realize this utility model, the above structure is further optimized. The inverted L-shaped main frame is provided with a double top protrusion. The angle between the end face of the double top protrusion and the horizontal plane is 45 degrees. The movable side top plate is provided with a double top platform. Under the elastic force of the return spring, the double top platform and the end face of the double top protrusion are pressed together, so that the opening angle between the movable side top plate and the inverted L-shaped main frame is 135 degrees.

[0013] To better realize this utility model, further optimizations are made to the above structure. The cross-section of the rail clamping top clip is in the shape of the letter "b". The rail clamping top clip is provided with a top clip fixing hole, a top clip spring groove, a top edge and a pressure relief handle. The rail clamping top clip is installed on the top clip shaft of the movable side top plate through the top clip fixing hole. A top clip spring groove is provided on one side of the rail clamping top clip for installing a retaining spring. One side of the retaining spring abuts against the inner wall of the top clip spring groove of the rail clamping top clip, and the other side is inserted into the small hole of the movable side top plate. Under the action of the retaining spring, the inner surface of the top edge of the rail clamping top clip is always pressed tightly against the side of the inverted L-shaped main frame.

[0014] To better realize this utility model, further optimization is made to the above structure. The inverted L-shaped main frame is provided with a clamping edge below the side where the movable top plate is installed. The clamping edge is a long strip protrusion. The clamping edge forms a clamping position at a right angle with the lower surface of the inverted L-shaped main frame. When the top edge of the clamping rail top clip automatically engages in the clamping position, the top edge is blocked by the clamping edge. At the same time, the upper edge of the top edge clamps the lower surface of the inverted L-shaped main frame, thereby keeping the movable top plate clamped to the inverted L-shaped main frame at a 90-degree angle.

[0015] To better realize this utility model, further optimization is made to the above structure. After the rail clamping top is in the clamping and tightening position, the pressure relief handle of the rail clamping top needs to be pressed to make the top edge disengage from the tightening position. Then, the movable side top plate automatically opens outward at a 135-degree angle under the elastic force of the return spring, and the rail jaw clamping wheel releases the rail head.

[0016] To better realize this utility model, further optimizations are made to the above structure. The inverted L-shaped main frame is composed of an upper platform and a U-shaped side extension plate in a staggered manner. The length of the U-shaped side extension plate is longer than the length of the upper platform, so that the center of gravity of the whole equipment is located in the center of the U-shaped side extension plate and close to the position of the electric grinder. When the equipment is fixed on the rail, the two convex track wheels under the inverted L-shaped main frame press on the rail head to become the central fulcrum. One side of the U-shaped side extension plate is pressed down by the gravity of the center of gravity, so that the two rail jaw clamping wheels that are pressed against the lower side of the rail jaw of the rail head naturally clamp with the rail jaw.

[0017] To better realize this utility model, further optimizations are made to the above structure. The connection between the two ends of the unloading side handle and the two shock absorbers is a loose connection, so that the middle part of the unloading side handle can move in the vertical direction. The middle part is a handle made of soft material, and the lower side of the handle is a handle hook made of metal. After pulling the unloading side handle outward, gently pressing down will allow the handle hook to hook onto the outer side of the inverted L-shaped main frame, preventing the electric grinder from returning to its original position and completely detaching the grinding wheel of the electric grinder from the rail.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] Currently, on-site rail web grinding still relies on manual grinding, with virtually no mature and applicable automation technology or large-scale automatic or semi-automatic rail web grinding equipment. This utility model provides a quick-release clamping device for a single-sided rail web grinder, a portable rail web grinder used to fix the grinder to the rail during on-site grinding. It is an auxiliary device for semi-automatic grinding equipment, featuring a compact mechanical structure, lightweight and easy transport, and simple and convenient operation. It boasts advantages such as easy and quick installation and disassembly, high construction efficiency, and applicability to various rail types. The structural design employs a balanced fixing method with two-point support on one side and downward pressure on the opposite side. The rail is locked by pressing down on one side handle, while the other side is secured by a grinding wheel pressing against the rail and the center of gravity naturally pressing down. For repositioning and disassembly, simply pull away the grinding wheel to disengage the rail lock, allowing the equipment to detach from the rail. The equipment is easy to install and disassemble, and simple to operate, which can greatly improve construction efficiency and reduce the intensity of manual labor. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the quick-release clamping device of the single-sided rail web grinding machine of this utility model;

[0022] Figure 2 This is one of the structural schematic diagrams of the inverted L-shaped main frame in this utility model;

[0023] Figure 3 This is the second schematic diagram of the inverted L-shaped main frame in this utility model;

[0024] Figure 4 This is one of the structural schematic diagrams of the movable side top plate in this utility model;

[0025] Figure 5 This is the second structural schematic diagram of the movable side top plate in this utility model;

[0026] Figure 6 This is a side view of the movable top plate in this utility model;

[0027] Figure 7 This is one of the structural schematic diagrams of the clamping rail top clip in this utility model;

[0028] Figure 8 This is the second structural schematic diagram of the clamping rail top clip in this utility model;

[0029] Figure 9 This is a schematic diagram of the installation of the clamping spring of the top clamp of the rail in this utility model;

[0030] Figure 10 This is a schematic diagram of the return spring installation of the movable side top plate in this utility model;

[0031] Figure 11 This is a schematic diagram of the relevant structure of the pneumatic support in this utility model;

[0032] Figure 12 This is a schematic diagram of the structure of this utility model that is released on the rail;

[0033] Figure 13 yes Figure 12 The front view;

[0034] Figure 14 This is a schematic diagram of the structure of this utility model for clamping and fixing on a steel rail;

[0035] Figure 15 yes Figure 14 The front view.

[0036] In the picture:

[0037] 0. Rail; 1. Reverse L-shaped main frame; 2. Movable side top plate; 3. Rail clamping top clip; 4. Force-relieving lateral pull handle; 5. Pneumatic support rod; 6. Shock absorber; 7. T-shaped vertical slide plate; 8. Convex edge track wheel; 9. Rail jaw clamping wheel; 10. Fixed handle; 11. Hand handle; 12. Grinding wheel; 13. Electric grinder main unit; 14. Support; 15. Return spring; 1-1, 16. Clamping spring; Frame upper platform; 1-2. U-shaped side extension plate; 1-3. Track wheel axle; 1-4. Double top convex plate; 1-5. Tightening and abutting the edge; 1-6. Double shaft on the side top plate; 1-7. Linkage groove; 2-1. Top clamp shaft; 2-2. Side top plate shaft hole; 2-3. Symmetrical inward folding pressure foot; 2-4. Clamping wheel shaft; 2-5. Double top platform; 3-1. Top edge; 3-2. Top clamp fixing hole; 3-3. Pressure relief handle; 3-4. Top clamp spring groove; 4-1. Handle thin rod; 4-2. Pull handle; 4-3. Pull handle hook plate; 5-1. Telescopic rod; 6-1. Upper connection of shock absorber; 6-2. Lower connection of shock absorber. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Please refer to Figures 1-15 The quick-assembly and clamping device for a single-sided rail web grinding machine provided by this utility model includes an inverted L-shaped main frame 1, a convex edge rail wheel 8, a movable side top plate 2, a rail jaw clamping wheel 9, a rail clamping top clip 3, a moving handle 11, a fixed handle 10, a T-shaped vertical sliding plate 7, a pneumatic support rod 5, an electric grinding main unit 13, a shock absorber 6, and a force-relieving lateral pull handle 4, etc. The moving handle 11 is concealed to facilitate viewing the position of the structure in the attached drawings.

[0042] The inverted L-shaped main frame 1 of the quick-release clamping device of the single-sided rail web grinding machine is connected to the movable side top plate 2 via a shaft. The lower part of this side is connected to the convex edge rail wheel 8 via two rail wheel shafts 1-3. The other two sides of the inverted L-shaped main frame 1 are fixedly connected to the pneumatic support rod 5 via brackets 14. The pneumatic support rod 5 is horizontally positioned and parallel to the inverted L-shaped main frame 1. The end of the telescopic rod 5-1 of the pneumatic support rod 5 is connected to the shock absorber 6. The shock absorber 6 has fixing holes on its upper part, which can be respectively connected to the force-relieving side pull handle 4. The two ends are connected. The shock absorber 6 is connected to the T-shaped vertical slide plate 7 on the left and right sides by screws. The electric grinder 13 is connected to the two symmetrical T-shaped vertical slide plates 7 on both sides by a mechanical device and can slide back and forth under the drive of the T-shaped vertical slide plate 7. The rail jaw clamping wheel 9 is installed on the clamping wheel shaft 2-4 at the end of the movable side top plate 2. The movable side top plate 2 is connected to the rail clamping top clip 3 by a shaft and to the handle 11 by screws. The middle part of the reverse L-shaped main frame 1 is connected and fixed to the fixed handle 10.

[0043] When installing and fixing this device onto the rail 0, first loosen the rail clamping top clamp 3, and simultaneously pull the unloading side handle 4 outwards. This will cause the grinding wheel 12 and the electric grinder 13 to slide to their outermost positions. Then, place the convex edge rail wheel 8 on the rail head of the rail 0. Next, apply force to press down the handle 11 to press the rail jaw clamping wheel 9 onto the rail jaw position of the rail 0. At this time, the rail clamping top clamp 3 will automatically engage in the clamping position, keeping the movable side top plate 2 in a pressed-down state. The jaw clamping wheel 9 is pressed tightly against the surface of the rail jaw. The unloading side pull handle 4 is released, and under the thrust of the pneumatic support rod 5, the grinding wheel 12 of the electric grinder 13 pushes against the rail web on the other side of the rail 0, completing the installation of the device onto the rail 0. When disassembly is required, the unloading side pull handle 4 is pulled outward, and at the same time, the pressure relief handle 3-3 of the rail clamping top clamp 3 is pressed down to make the rail clamping top clamp 3 lose its tightness. The movable side top plate 2 drives the rail jaw clamping wheel 9 to automatically open outward, and the device can be removed.

[0044] The inverted L-shaped main frame 1 is connected to the movable side top plate 2 via the double shaft 1-6 of the side top plate. A return spring 15 is installed inside the side top plate shaft hole 2-2 of the movable side top plate 2. Under the action of the return spring 15, the movable side top plate 2 will always maintain a certain angle of outward opening when its rail clamping top clip 3 is not locked in the clamping position, so that the equipment can be quickly placed on the rail 0 or moved off the rail 0.

[0045] The movable side top plate 2 has two bends, one small and one large, when viewed from the side. The first bend, which is small inward, is to bring the rail jaw clamping wheel 9 closer to the rail 0. The second bend, which is large outward, is to keep the clamping wheel shaft 2-4 parallel to the rail jaw surface of the rail 0. Thus, when the movable side top plate 2 is pressed, the rail jaw clamping wheel 9 can be completely fitted to the rail jaw surface.

[0046] The end face of the double top protrusion 1-4 of the inverted L-shaped main frame 1 is at a 45-degree angle to the horizontal plane. When the movable side top plate 2 is not locked, it is subjected to the outward torsional force of the return spring 15. The double top platform 2-5 of the movable side top plate 2 is exactly abutted against the double top protrusion 1-4 of the inverted L-shaped main frame 1, so that the opening angle between it and the inverted L-shaped main frame 1 is always 135 degrees. This ensures that the movable side top plate 2 will not open outward too much. The advantage of this is that the handle 11 on the inverted L-shaped main frame 1 and the fixed handle 10 on the other side are symmetrical so that the operator can grasp and move it. Moreover, the handle is at a 45-degree angle to the vertical plane, which also makes it easy for the operator to quickly apply downward pressure to the handle 11.

[0047] The cross-section of the rail clamping top clip 3 is shaped like the letter "b". It is installed on the top clip shaft 2-1 of the movable side top plate 2 through its top clip fixing hole 3-2. One side of it has a top clip spring groove 3-4 for installing the clamping spring 16. One side of the clamping spring 16 abuts against the inner wall of the top clip spring groove 3-4 of the rail clamping top clip 3, and the other side is inserted into the small hole of the movable side top plate 2. Under the torsional force of the clamping spring 16, the inner surface of the top edge 3-1 of the rail clamping top clip 3 is always pressed tightly against the side of the inverted L-shaped main frame 1. Thus, when the movable side top plate 2 is pressed down until the rail jaw clamping wheel 9 clamps the rail 0, the top edge 3-1 can automatically lock into the clamping position of the lower edge of the L-shaped main frame.

[0048] The inverted L-shaped main frame 1 has a clamping edge 1-5 on the side where the movable side top plate 2 is installed. The clamping edge 1-5 is a long strip protrusion. The clamping edge 1-5 forms a clamping position at a right angle with the lower surface of the inverted L-shaped main frame 1. When the top edge 3-1 of the clamping rail top clip 3 automatically engages in the clamping position, its top edge 3-1 will be blocked by the clamping edge 1-5. At the same time, the upper edge of its top edge 3-1 clamps the lower surface of the inverted L-shaped main frame 1, thereby keeping the movable side top plate 2 clamped to the inverted L-shaped main frame 1 at a 90-degree angle.

[0049] After the rail clamping top clip 3 is engaged in the tightening position, it will not automatically disengage from the tightening position. The pressure relief handle 3-3 of the rail clamping top clip 3 needs to be pressed to disengage its top edge 3-1 from the tightening position. Then, the movable side top plate 2 will automatically open outward at a 135-degree angle under the elastic force of the return spring 15, and the rail jaw clamping wheel 9 will also loosen the rail head.

[0050] The inverted L-shaped main frame 1 consists of an upper platform 1-1 and U-shaped side extension plates 1-2 arranged in a staggered manner. To allow the electric grinder 13 installed below to move back and forth, the length of the U-shaped side extension plate 1-2 is longer than that of the upper platform 1-1, so that the overall center of gravity of the equipment is approximately located at the center of the U-shaped side extension plate 1-2 and close to the electric grinder 13. When the equipment is fixed to the rail 0, the two convex track wheels 8 under the inverted L-shaped main frame 1 press against the rail head of the rail 0, becoming the central fulcrum. Under the influence of gravity, the U-shaped side extension plate 1-2 presses downward, causing the two rail jaw clamping wheels 9, which are located on the lower side of the rail jaw, to naturally clamp with the rail jaw, thus forming a stable force-bearing structure. This allows the equipment to maintain good fixation on the rail 0 with only two points of force support at the rail head and rail jaw, simplifying the mechanical structure and making it easier to install and disassemble quickly.

[0051] The two ends of the unloading side handle 4 are loosely connected to the two shock absorbers 6, allowing the middle part of the unloading side handle 4 to move in the vertical direction. The middle part is a handle made of soft material, and the lower side of the handle is a metal handle hook plate 4-3. After pulling the unloading side handle 4 outward, gently press it down to make the handle hook plate 4-3 hook onto the outer side of the U-shaped side extension plate 1-2 of the inverted L-shaped main frame 1, so that the electric grinder main unit 13 cannot return to its original position, and the grinding wheel 12 is completely separated from the rail 0, so as to facilitate the installation or disassembly of the equipment.

[0052] This patented design addresses the issue of manual grinding required for on-site rail grinding. It presents a quick-release clamping device suitable for single-sided rail web grinding machines. The device employs a balanced fixing method with two-point support on one side and downward pressure on the opposite side. The main frame of the clamping device is made of lightweight metal alloy. The clamping device structure is extremely simple and lightweight. Pressing down on one side of the handle clamps and locks the rail, while the other side is secured by the grinding wheel 12 pressing firmly against the rail and the center of gravity naturally pressing down. For relocation and disassembly, simply reverse the steps: pull the clamped grinding wheel 12 outwards and press down the pressure relief handle 3-3 to disengage the rail clamping mechanism. The clamping mechanism automatically opens, allowing the device to detach from the rail. The operator can then move it to the next location for installation. This quick-release clamping device offers fast assembly and disassembly, simple operation, and lightweight, easy-to-carry design, making it ideal for on-site rail web grinding.

[0053] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A quick-release clamping device for a single-sided rail web grinding machine, characterized in that: Includes an inverted L-shaped main frame, convex edge track wheels, movable side top plate, rail jaw clamping wheel, rail clamping top clip, moving handle, fixed handle, T-shaped vertical slide plate, pneumatic support rod, electric grinder main unit, shock absorber, and force-relieving lateral pull handle; One side of the inverted L-shaped main frame is rotatably connected to the movable side top plate via a shaft. The inverted L-shaped main frame is connected to the convex side track wheel below this side via two track wheel shafts. The convex side track wheel is placed on the rail head. The rail jaw clamping wheel is installed on the clamping wheel shaft at the end of the movable side top plate. The movable side top plate is rotatably connected to the rail clamping top clamp via a top clamp shaft. The movable side top plate is connected to the movable handle via screws. The middle part of the inverted L-shaped main frame is fixedly connected to the fixed handle. The other side of the inverted L-shaped main frame is fixedly connected to the two pneumatic support rods via brackets. The pneumatic support rods are horizontal and parallel to the inverted L-shaped main frame. The telescopic rod ends of the pneumatic support rods are connected to the shock absorbers. The shock absorbers have fixing holes on their top, which are respectively connected to the two ends of the force-relieving lateral pull handle. The two shock absorbers are connected to the two T-shaped vertical slide plates on the left and right sides below by screws. The electric grinder is connected to the two symmetrical T-shaped vertical slide plates on both sides via a mechanical connection device, and the electric grinder can slide back and forth under the drive of the two T-shaped vertical slide plates. When the convex edge track wheel is placed on the rail, the rail jaw clamping wheel can abut against the rail jaw on one side of the rail, and the rail clamping top can automatically clamp the movable side top plate, keeping the movable side top plate in a downward state. Under the thrust of the pneumatic support rod, the grinding wheel of the electric grinding host can abut against the rail web on the other side of the rail.

2. The quick-release clamping device for a single-sided rail web grinding machine according to claim 1, characterized in that: The inverted L-shaped main frame is rotatably connected to the movable side top plate via a double shaft on the side top plate, and a return spring is installed in the shaft hole of the movable side top plate.

3. The quick-release clamping device for a single-sided rail web grinding machine according to claim 2, characterized in that: The movable side top plate has two bends, one small and one large, when viewed from the side.

4. The quick-release clamping device for a single-sided rail web grinding machine according to claim 3, characterized in that: The inverted L-shaped main frame is provided with a double top protrusion, the end face of the double top protrusion is at an angle of 45 degrees to the horizontal plane, and the movable side top plate is provided with a double top platform. Under the elastic force of the return spring, the double top platform abuts against the end face of the double top protrusion, so that the opening angle between the movable side top plate and the inverted L-shaped main frame is 135 degrees.

5. The quick-release clamping device for a single-sided rail web grinding machine according to claim 4, characterized in that: The cross-section of the rail clamp is in the shape of the letter "b". The rail clamp has a top clamp fixing hole, a top clamp spring groove, a top edge, and a pressure relief handle. The rail clamp is installed on the top clamp shaft of the movable side top plate through the top clamp fixing hole. The top clamp has a top clamp spring groove on one side for installing a retaining spring. One side of the retaining spring abuts against the inner wall of the top clamp spring groove of the rail clamp, and the other side is inserted into a small hole in the movable side top plate. Under the action of the retaining spring, the inner surface of the top edge of the rail clamp is always pressed tightly against the side of the inverted L-shaped main frame.

6. The quick-release clamping device for a single-sided rail web grinding machine according to claim 5, characterized in that: The inverted L-shaped main frame has a clamping edge below the side where the movable top plate is installed. The clamping edge is a long strip protrusion. The clamping edge forms a clamping position at a right angle with the lower surface of the inverted L-shaped main frame. When the top edge of the clamping rail automatically engages with the clamping position, the top edge is blocked by the clamping edge. At the same time, the upper edge of the top edge presses against the lower surface of the inverted L-shaped main frame, thereby keeping the movable top plate clamped to the inverted L-shaped main frame at a 90-degree angle.

7. The quick-release clamping device for a single-sided rail web grinding machine according to claim 6, characterized in that: After the rail clamp is engaged in the tightening position, the pressure relief handle of the rail clamp needs to be pressed to disengage the top edge from the tightening position. Then, the movable side top plate automatically opens outward at a 135-degree angle under the elastic force of the return spring, and the rail jaw clamping wheel releases the rail head.

8. The quick-release clamping device for a single-sided rail web grinding machine according to claim 1, characterized in that: The inverted L-shaped main frame is composed of an upper platform and U-shaped side extensions arranged in a staggered manner. The length of the U-shaped side extensions is longer than that of the upper platform, so that the center of gravity of the entire equipment is located at the center of the U-shaped side extensions and close to the electric grinding main unit. When the equipment is fixed to the rail, the two convex track wheels under the inverted L-shaped main frame press against the rail head to become the central fulcrum. One side of the U-shaped side extensions is pressed downward by the gravity of the center of gravity, so that the two rail jaw clamping wheels at the lower side of the rail head naturally clamp with the rail jaw.

9. The quick-release clamping device for a single-sided rail web grinding machine according to claim 1, characterized in that: The two ends of the unloading side pull handle are loosely connected to the two shock absorbers, allowing the middle part of the unloading side pull handle to move vertically. The middle part is a pull handle made of soft material, and the lower side of the pull handle is a pull handle hook made of metal. By pulling the unloading side pull handle outward and then pressing it down gently, the pull handle hook can be hooked onto the outer side of the inverted L-shaped main frame, preventing the electric grinder from returning to its original position and completely detaching the grinding wheel of the electric grinder from the rail.

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