Internal combustion rail grinder
By adopting a two-stroke internal combustion engine and a lifting control system in the rail grinding machine, the problems of large weight, large size and unstable movement of the equipment have been solved, achieving efficient and stable rail grinding with a grinding accuracy of 0.1mm.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BENXI ZHONGLI RAILWAY MASCH MFG CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-05
AI Technical Summary
Existing rail grinding machines mostly use high-power gasoline engines as their power source, resulting in large overall weight and size of the equipment, and instability when traveling on a single rail.
Using a two-stroke internal combustion engine as the power source, combined with a lifting control system and a walking control system, a portal-shaped fastening structure is formed by adjusting the screw and the limit wheel to ensure the stability of the equipment traveling on a single rail. High-speed and miniaturized design enable efficient grinding.
It achieves stability and efficient grinding while traveling on a single rail, with a grinding accuracy of 0.1mm, meeting the requirements for rapid operation. The equipment is lightweight, flexible, and easy to operate.
Smart Images

Figure CN224325638U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grinding machine technology, and in particular to an internal combustion steel rail grinding machine. Background Technology
[0002] Rail grinding machines are used for grinding welded joints of rails and various switch rails and turnouts. They use an internal combustion engine as a power source and are suitable for on-site operations without power. They have a simple structure, small size, light weight, are easy to use, can quickly go on and off the track, have insulated running wheels, are safe and reliable, and can be used to grind the flat surface, side surface, arc surface and various angles of rails.
[0003] Most rail grinding machines on the market now use high-power gasoline engines as their power source. The gasoline engines used affect the overall weight of the equipment and make it bulky. Furthermore, they cannot maintain stability when traveling on a single rail. Utility Model Content
[0004] Given that most rail grinding machines on the market currently use high-power gasoline engines as their power source, which affects the overall weight and size of the equipment and makes it difficult to maintain stability when traveling on a single rail, this utility model is proposed.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an internal combustion steel rail grinding machine, comprising an integral frame, a walking control system at the bottom of the integral frame, a two-stroke internal combustion engine and a lifting control system on the inner side of the integral frame, an adjusting seat assembly at the lower end of the integral frame, a connecting piece on the left side of the adjusting seat assembly, a long roller assembly and a short roller assembly respectively on one side and the bottom of the adjusting seat assembly, an adjusting seat on the right side of the adjusting seat assembly, and an adjusting screw inserted into the right side of the adjusting seat. A lifting eye nut is provided at one end of the adjusting seat assembly. A first limiting wheel and a second limiting wheel are respectively provided on both sides of the outer wall of the adjusting seat. The lifting control system includes a feed fixing seat located at the front end of the two-stroke internal combustion engine. The feed fixing seat has a cavity inside. A feed fixing seat cover is provided at the cavity opening. A lifting screw is provided inside the cavity. A feed fixing seat isolation ring is fitted on the outside of the lifting screw. A deep groove ball bearing is provided on one side of the feed fixing seat. A spring and a steel ball are provided on the upper side of the feed fixing seat. A support plate lifting frame is fitted on the outer wall of the lifting screw.
[0006] As a preferred embodiment of the internal combustion rail grinding machine of this utility model, the two-stroke internal combustion engine has a rated power of 2.4Kw and a speed of up to 8000r / min.
[0007] In a preferred embodiment of the internal combustion steel rail grinding machine of this utility model, the adjusting seat is movably sleeved on the outer wall of one end of the adjusting seat assembly, the adjusting screw is threaded into one end of the adjusting seat assembly, and the adjusting screw is rotatably inserted into the middle of the adjusting seat.
[0008] In a preferred embodiment of the internal combustion steel rail grinding machine of this utility model, the deep groove ball bearing is mounted on the outside of the lifting screw, and the steel ball is disposed at the upper end of the spring.
[0009] As a preferred embodiment of the internal combustion steel rail grinding machine of this utility model, the lower end of the feed fixed seat is provided with a feed dust cover, the upper end of the fixed seat is provided with a feed positioning, and the lower end of the feed positioning is provided with a plurality of positioning points that cooperate with the steel balls in a ring.
[0010] In a preferred embodiment of the internal combustion steel rail grinding machine of this utility model, one end of the lifting screw is connected to the support plate lifting frame, and the upper end of the lifting screw is connected to the handwheel.
[0011] Compared with the prior art, the present invention has at least the following beneficial effects:
[0012] This invention allows for the adjustment of the distance between the limiting wheel and the roller during operation. This adjustment is achieved by rotating the lifting eye nut to drive the adjusting screw, which in turn engages with the nut. The roller long assembly, roller short assembly, and the first or second limiting wheel together form a gate-shaped, secure and stable structure for the rail, ensuring stable and safe grinding operations. The travel control system ensures that the equipment can maintain a relatively stable state and continue operating during monorail travel.
[0013] 2. The power source of this utility model is a two-stroke internal combustion engine. In order to achieve the requirements of efficient grinding operation, the gasoline engine has a rated power of 2.4Kw and a speed of 8000r / min, which perfectly meets the requirements of fast operation. The grinding accuracy reaches 0.1mm. Moreover, the two-stroke internal combustion engine is small in size and light in weight, making it convenient to operate and flexible in the track. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the internal combustion steel rail grinding machine of this utility model;
[0015] Figure 2 This is a three-dimensional structural diagram of the walking control system of the internal combustion steel rail grinding machine of this utility model;
[0016] Figure 3 This is a three-dimensional cross-sectional structural diagram of the lifting control system of the internal combustion steel rail grinding machine of this utility model;
[0017] Figure 4This is a three-dimensional structural diagram of the steel ball, spring, and feed positioning of the internal combustion steel rail grinding machine of this utility model.
[0018] Explanation of reference numerals in the attached figures:
[0019] 1. Two-stroke internal combustion engine; 2. Lifting control system; 201. Feed fixed seat; 202. Feed fixed seat cover; 203. Feed fixed seat isolation ring; 204. Feed positioning; 205. Lifting screw; 206. Steel ball; 207. Spring; 208. Deep groove ball bearing; 209. Feed dust cover; 210. Pallet lifting frame; 211. Handwheel; 3. Travel control system; 301. Connecting parts; 302. Adjusting seat assembly; 303. Roller long assembly; 304. Roller short assembly; 305. Lifting eye nut; 306. Adjusting screw; 307. Adjusting seat; 308. First limit wheel; 309. Second limit wheel; 4. Overall frame. Detailed Implementation
[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Example 1
[0021] Reference Figures 1-4 This is the first embodiment of the present invention, providing an internal combustion engine rail grinding machine, including an integral frame 4, with a walking control system 3 at the bottom of the integral frame 4; a two-stroke internal combustion engine 1 and a lifting control system 2 are located on the inner side of the integral frame 4; an adjusting seat assembly 302 is located at the lower end of the integral frame 4; a connecting piece 301 is located on the left side of the adjusting seat assembly 302; a long roller assembly 303 and a short roller assembly 304 are respectively located on one side and the bottom of the adjusting seat assembly 302; an adjusting seat 307 is located on the right side of the adjusting seat assembly 302; an adjusting screw 306 is inserted into the right side of the adjusting seat 307, and the adjusting screw 306 is located away from the adjusting seat assembly 302. One end is provided with a lifting eye nut 305, and the outer walls of the adjusting seat 307 are respectively provided with a first limiting wheel 308 and a second limiting wheel 309. The lifting control system 2 includes a feed fixing seat 201 located at the front end of the two-stroke internal combustion engine 1. The feed fixing seat 201 has a cavity inside, and a feed fixing seat cover 202 is provided at the cavity opening. A lifting screw 205 is provided inside the cavity. A feed fixing seat isolation ring 203 is fitted on the outside of the lifting screw 205. A deep groove ball bearing 208 is provided on one side of the feed fixing seat 201. A spring 207 and a steel ball 206 are provided on the upper side of the feed fixing seat 201. A pallet lifting frame 210 is fitted on the outer wall of the lifting screw 205.
[0022] The two-stroke internal combustion engine 1 has a rated power of 2.4 kW and a speed of up to 8000 r / min. The adjusting seat 307 is movably sleeved on the outer wall of one end of the adjusting seat assembly 302. The adjusting screw 306 is threaded into one end of the adjusting seat assembly 302 and rotated into the middle of the adjusting seat 307. The deep groove ball bearing 208 is sleeved on the outside of the lifting screw 205. The steel ball 206 is set on the upper end of the spring 207. The lower end of the feed fixed seat 201 is provided with a feed dust cover 209. The lower end of the feed positioning 204 has multiple sets of positioning points that cooperate with the steel ball 206. One end of the lifting screw 205 is connected to the pallet lifting frame 210, and the upper end of the lifting screw 205 is connected to the handwheel 211.
[0023] This small internal combustion rail grinding machine is powered by a two-stroke internal combustion engine. It is small in size and light in weight, making it easy to operate and flexible in raising and lowering the track. The lifting control system 2 controls the feed accuracy and lifting lock. It adopts a mechanical locking structure. The pitch between the lifting screws 205 is set to 1.5mm. The feed positioning 204 has 15 evenly distributed positioning points, and the interval between each locking point is 0.1mm feed accuracy. This ensures that the grinding accuracy is within the range of 0.1mm, resulting in higher grinding precision.
[0024] During operation, the distance between the limit wheel and the roller can be adjusted by rotating the eye nut 305 to drive the adjusting screw 306 to rotate, which in turn engages with the nut, according to the grinding angle and rail type. The roller long assembly 303, roller short assembly 304, and the first limit wheel 308 or the second limit wheel 309 together form a gate-shaped fastening and stabilizing structure for the rail, making the grinding operation stable and safe. The travel control system 3 ensures that the equipment can maintain a relatively stable state during the single-rail travel process and continue to operate. The linear bearing is locked at the lower end of the rail. The upper and lower linear bearings can be adjusted according to the grinding position and angle by adjusting the direction of the adjusting seat 307 and rotating the eye nut 305 to drive the adjusting screw 306 to rotate, which in turn engages with the nut to adjust the distance between the first limit wheel 308, the second limit wheel 309, and the roller. This utility model uses a two-stroke internal combustion engine 1 as its power source to control the grinding process. To achieve high-efficiency grinding, the engine has a rated power of 2.4 kW and a speed of 8000 r / min, perfectly meeting the requirements for rapid operation. The grinding accuracy reaches 0.1 mm, far exceeding the railway standard requirements. This device is used for grinding damaged rail surfaces, sides, joints, and thick edges. It is a small tool for precise contour grinding of various parts of the rail, ensuring a smooth and clean finish while maintaining the original rail dimensions. Using 1 as its power source, it mimics the shape of the rail head and maintains consistency and stability at various grinding angles, resulting in a smooth and consistent finish. Integrating portability, flexibility, and stability, it is easy and labor-saving to operate, making it the best small tool for railway maintenance and construction.
[0025] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A combustion engine rail grinding machine, comprising an integral frame (4), characterized in that: The bottom of the overall frame (4) is provided with a walking control system (3), the inner side of the overall frame (4) is provided with a two-stroke internal combustion engine (1) and a lifting control system (2), the lower end of the overall frame (4) is provided with an adjusting seat assembly (302), the left side of the adjusting seat assembly (302) is provided with a connector (301), one side and the bottom of the adjusting seat assembly (302) are respectively provided with a long roller assembly (303) and a short roller assembly (304), the right side of the adjusting seat assembly (302) is provided with an adjusting seat (307), the right side of the adjusting seat (307) is provided with an adjusting screw (306), the end of the adjusting screw (306) away from the adjusting seat assembly (302) is provided with a lifting eye nut (305), the adjusting seat ( 307) The outer wall is provided with a first limiting wheel (308) and a second limiting wheel (309) on both sides respectively. The lifting control system (2) includes a feed fixing seat (201) located at the front end of the two-stroke internal combustion engine (1). The feed fixing seat (201) has a cavity inside. The cavity opening is provided with a feed fixing seat cover (202). The cavity is provided with a lifting screw (205). The outside of the lifting screw (205) is fitted with a feed fixing seat isolation ring (203). The feed fixing seat (201) is provided with a deep groove ball bearing (208) on one side. The upper side of the feed fixing seat (201) is provided with a spring (207) and a steel ball (206). The outer wall of the lifting screw (205) is fitted with a pallet lifting frame (210).
2. The internal combustion steel rail grinding machine according to claim 1, characterized in that: The two-stroke internal combustion engine (1) has a rated power of 2.4Kw and a speed of up to 8000r / min.
3. The internal combustion steel rail grinding machine according to claim 1, characterized in that: The adjusting seat (307) is movably sleeved on the outer wall of one end of the adjusting seat assembly (302), the adjusting screw (306) is threaded into one end of the adjusting seat assembly (302), and the adjusting screw (306) is rotatably inserted into the middle of the adjusting seat (307).
4. The internal combustion steel rail grinding machine according to claim 1, characterized in that: The deep groove ball bearing (208) is mounted on the outside of the lifting screw (205), and the steel ball (206) is mounted on the upper end of the spring (207).
5. The internal combustion steel rail grinding machine according to claim 1, characterized in that: The lower end of the feed fixing seat (201) is provided with a feed dust cover (209), and the upper end of the fixing seat (201) is provided with a feed positioning (204). The lower end of the feed positioning (204) is provided with multiple sets of positioning points that cooperate with the steel ball (206).
6. The internal combustion steel rail grinding machine according to claim 1, characterized in that: One end of the lifting screw (205) is connected to the pallet lifting frame (210), and the upper end of the lifting screw (205) is connected to the handwheel (211).