Rail web derusting polisher

Abstract

The invention provides a rail web derusting polisher which comprises a rack main body, polishing head assemblies are arranged on the left side and the right side of the rack main body, a guide assembly and a positioning clamping device are arranged below the rack main body, the guide assembly is used for guiding the rack main body, and the positioning clamping device is used for positioning the rack main body. The positioning and clamping device comprises a height adjusting assembly and clamping assemblies arranged on the two sides of the height adjusting assembly, each clamping assembly comprises a direction changing column and a clamping roller, the direction changing columns can drive the clamping rollers to rapidly turn by 180 degrees, the grinding head assembly comprises a driving motor and a grinding head, and the driving motor drives the grinding head to rotate by 180 degrees. And the polishing head is fixedly matched with an output rotating shaft of the driving motor. According to the invention, the sander is more convenient to mount on or demount from the rail, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of railway maintenance equipment, and in particular to a rail web rust removal and grinding machine. Background Technology

[0002] In railway line maintenance, rust removal from the rail web is an important task. For example, during rail welding, it is generally necessary to remove rust and raised rail markings from the rail web at the electrode contact point of the welding machine before welding, grinding it smooth to expose the metal. Traditional rail web grinders suffer from poor stability during use, making it difficult to control the quality and smoothness of rust removal, and they are also difficult to operate and have low grinding efficiency.

[0003] Currently, some companies have made improvements to address this issue. For example, Chinese utility model patent CN220241059U discloses a novel rail clamping device. This design incorporates a positioning screw, a limiting block, a pressure spring, and a roller unit. By pressing down and rotating the positioning screw, the roller unit can be rotated to the clamping position. After releasing, it is clamped again under the elastic force of the pressure spring, making it easy to rotate in and out. The tightness of the roller unit clamping the rail can be adjusted by adjusting the vertical position of the limiting block, thus regulating the clamping force. This solution largely solves the problem of incomplete contact between the conical wheels during grinding in traditional grinders. However, the height of the roller units on both sides is adjusted independently, which can easily lead to jamming due to the height difference between the two clamping components, thus affecting the normal grinding process and reducing work efficiency. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention proposes a rail web rust removal and grinding machine that is easy to operate, has a stable grinding process, and has a good grinding effect.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a rail web rust removal and grinding machine, comprising a frame body, grinding head assemblies arranged on the left and right sides of the frame body, a guide assembly arranged below the frame body, and a positioning and clamping device arranged on the guide assembly. The positioning and clamping device includes a height adjustment assembly and a clamping assembly. The height adjustment assembly passes through the connecting plate and is fixedly fitted with a clamping assembly mounting plate below it. Symmetrical through holes are arranged at both ends of the clamping assembly mounting plate, and limit grooves are symmetrically arranged on the sidewalls of the through holes. The clamping assembly includes a direction conversion post and a clamping roller. The upper end of the direction conversion post is provided with a limiting block that cooperates with the limiting slide groove. The lower end of the direction conversion post passes through the through hole and is fixedly cooperated with the clamping roller. A pressure spring is also cooperated with the lower end of the direction conversion post. The pressure spring is disposed between the clamping roller and the clamping assembly mounting plate. The grinding head assembly includes a drive motor and a grinding head. The grinding head is fixedly cooperated with the output shaft of the drive motor. The height adjustment assembly adjusts the height of the clamping assembly through a threaded screw.

[0006] Based on the above, the height adjustment component can simultaneously adjust the height of the clamping components at both ends of the clamping component mounting plate, so that the clamping roller contacts the rail. During the process of mounting the grinder onto the guide rail, the direction conversion column can be pulled up first, causing the limiting block to disengage from the limiting groove. Then, rotate 180° to turn the clamping roller outwards. Release the direction conversion column, and the limiting block, under the action of the pressure spring, re-engages with the limiting groove. Then, mount the grinder onto the guide rail and repeat the above actions to turn the clamping roller inwards again. Furthermore, the drive motor drives the grinding head to rotate, thus grinding the rail web.

[0007] Furthermore, the grinding head is a flap wheel, and the abrasive cloth layer of the grinding head is cut in a ring.

[0008] Based on the above, after the sandpaper layer of the grinding head is cut laterally, the resistance of the grinding head during use can be reduced, making the grinding smoother and improving the grinding effect.

[0009] Furthermore, the outer contour of the grinding head is arc-shaped.

[0010] Based on the above, the outer contour of the grinding head is arc-shaped, which allows the grinding head to better fit with the rail web and improve the grinding effect.

[0011] Furthermore, the frame body includes a base plate and a left-right adjustment component. The upper surface of the base plate is provided with a through groove and a set of slide rails. The slide rails are located on both sides of the through groove. The drive motor slides with the slide rails via a sliding plate. The left-right adjustment component is connected to the sliding plate.

[0012] Based on the above, the left and right adjustment component adjusts the position of the drive motor by moving the slide plate.

[0013] Furthermore, the left and right adjustment assembly includes a left adjustment handwheel, a right adjustment handwheel, a first adjustment screw, and a second adjustment screw. The left and right adjustment handwheels are respectively disposed on the left and right sides of the upper surface of the frame body. The left and right adjustment handwheels are respectively fitted with a first drive rod and a second drive rod. The ends of the first and second drive rods are respectively provided with a first bevel drive gear and a second bevel drive gear. One end of the first and second adjustment screws is respectively provided with a first bevel driven gear and a second bevel driven gear. The other ends of the first and second adjustment screws are respectively fitted with bearings and bearing mounting seats. The first and second adjustment screws are respectively provided with a first drive block and a second drive block. The first drive block and the second drive block are respectively fixedly fitted with the slide plates on the left and right sides of the slide rail.

[0014] Based on the above, rotating the left adjusting handwheel engages the first conical driving gear with the first conical driven gear, thereby rotating the first adjusting screw. The first driving block moves the sliding plate on the left side of the slide rail, thus adjusting the drive motor on the left side of the frame body. Similarly, rotating the right adjusting handwheel engages the second conical driving gear with the second conical driven gear, thereby rotating the second adjusting screw. The second driving block moves the sliding plate on the right side of the slide rail, thus adjusting the drive motor on the right side of the frame body.

[0015] Furthermore, the left and right adjustment handwheels are rotatably fitted with handles.

[0016] Based on the above, the handle, in conjunction with the left and right adjustment handwheels, can be stored away when not in use, reducing space occupation and facilitating packaging and transportation.

[0017] Furthermore, the guide assembly includes a front guide wheel and a rear guide wheel, which are connected by a connecting plate.

[0018] Based on the above, the front guide wheel and the rear guide wheel are used to guide the movement of the frame body.

[0019] Furthermore, a protective cover is provided around the grinding head.

[0020] Based on the above, the grinding head rotates at high speed during operation, posing a safety hazard. The protective cover can prevent the grinding head from causing injury to workers and improve safety.

[0021] Furthermore, the abrasive cloth layer of the grinding head is provided with cutting grooves formed by cutting, the cutting grooves are arranged around the outer circumference of the abrasive cloth layer, and each cutting groove is staggered.

[0022] Based on the above, the abrasive cloth layer will leave the cutting groove after cutting. In order to avoid the cutting grooves being at the same horizontal position, which would cause grinding dead corners during the grinding process, the cutting process is carried out in segments with staggered cutting, so that each segment of the cutting groove is staggered, which improves the grinding effect and avoids grinding dead corners.

[0023] In summary, the present invention, through the height adjustment component, can simultaneously adjust the height of the clamping components at both ends of the clamping component mounting plate, ensuring that the clamping components at both ends are at the same height. This guarantees smoother operation of the grinder during grinding and prevents jamming due to height differences between the two clamping components. Secondly, changing the orientation of the clamping rollers of the clamping component is simple and convenient, improving work efficiency. Furthermore, the cutting of the abrasive cloth layer on the grinding head reduces resistance during use, making grinding smoother and improving the grinding effect. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a rail web rust removal and grinding machine according to the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the positioning and clamping device of the present invention;

[0026] Figure 3 This is a schematic diagram of the direction conversion column of the positioning and clamping device of the present invention in the lifting state;

[0027] Figure 4 This is a schematic diagram of the frame body of the present invention with the outer shell and motor driver removed.

[0028] Figure 5 This is a schematic diagram of the frame body of the present invention with the outer shell removed;

[0029] Figure 6 This is a schematic diagram of the structure of the grinding head assembly of the present invention;

[0030] Figure 7 This is a schematic diagram of the left and right adjustment assembly of the present invention (the internal structure of the bearing fixing seat has been exploded).

[0031] Figure 8 This is a schematic diagram showing the unfolded abrasive cloth layer of the grinding head of the present invention.

[0032] Reference numerals: 1-Frame body; 101-Base plate; 102-Through groove; 103-Slide rail; 104-Slide plate; 2-Guide assembly; 21-Front guide wheel; 22-Rear guide wheel; 23-Connecting plate; 3-Height adjustment assembly; 301-Height adjustment handle; 4-Clamping assembly; 41-Direction conversion column; 42-Clamping roller; 43-Limit block; 44-Pressure spring; 5-Clamping assembly mounting plate; 51-Through hole; 52-Limit slide groove; 6-Drive motor; 61-Motor driver; 7-Grinding head; 71-Cutting groove; 7 2-Protective cover; 73-Abrasive cloth layer; 8-Left and right adjustment assembly; 801-Left adjustment handwheel; 802-Right adjustment handwheel; 803-First adjustment screw; 804-Second adjustment screw; 805-First drive rod; 806-Second drive rod; 807-First bevel drive gear; 808-Second bevel drive gear; 809-First bevel driven gear; 810-Second bevel driven gear; 811-Bearing; 812-Bearing mounting seat; 813-First drive block; 814-Second drive block; 815-Handle; 9-Guide rail. Detailed Implementation

[0033] The invention's objective will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described in detail here, but the implementation of the invention is not limited to the following embodiments.

[0034] Example 1

[0035] like Figures 1 to 7As shown, a rail web rust removal and grinding machine includes a frame body 1. Grinding head assemblies are arranged on the left and right sides of the frame body 1. A guide assembly 2 is arranged below the frame body 1. The guide assembly 2 includes a front guide wheel 21 and a rear guide wheel 22, which are connected by a connecting plate 23. A positioning and clamping device is arranged on the connecting plate 23. The positioning and clamping device includes a height adjustment assembly 3 and a clamping assembly 4. A height adjustment handle 301 is arranged at the upper end of the height adjustment assembly 3. The lower end of the height adjustment assembly 3 passes through the connecting plate 23 and is fixedly fitted with a clamping assembly mounting plate 5 below it. The clamping assembly mounting plate 5 has symmetrical through holes 51 at both ends, and the sidewalls of the through holes 51 have symmetrical limit grooves 52. The clamping assembly 4 includes a direction conversion post 41 and a clamping roller 42. The upper end of the direction conversion post 41 is provided with a limit block 43 that cooperates with the limit groove 52. The lower end of the direction conversion post 41 passes through the through hole 51 and is fixedly cooperated with the clamping roller 42. The lower end of the direction conversion post 41 is also cooperated with a pressure spring 44. The pressure spring 44 is disposed between the clamping roller 42 and the clamping assembly mounting plate 5. The height adjustment assembly adjusts the height of the clamping assembly through a threaded screw.

[0036] The height adjustment component 3 can simultaneously adjust the height of the clamping components 4 at both ends of the clamping component mounting plate 5, so that the clamping roller 42 contacts the track. During the process of installing the grinder onto the guide rail 9, rotate the height adjustment handle 301 to lower the position of the clamping assembly 4, then pull up the direction conversion column 41 to disengage the limiting block 43 from the limiting slide groove 52, then rotate 180° to turn the clamping roller 42 outward, release the direction conversion column 41, and the limiting block 43 re-engages with the limiting slide groove 52 under the action of the pressure spring 44. Then install the grinder onto the guide rail 9. At this time, there is a gap between the clamping roller 42 and the upper plate of the guide rail 9. During the process of turning the direction of the clamping roller 42, there will be no collision or friction with the guide rail 9. Then repeat the above actions, pull up the direction conversion column 41 to disengage the limiting block 43 from the limiting slide groove 52, then rotate 180° to turn the clamping roller 42 inward again, and then rotate the height adjustment handle 301 to make the clamping roller 42 contact the rail. During the process of removing the grinder from the guide rail 9, first turn the height adjustment handle 301 to lower the position of the clamping assembly 4, then pull up and rotate the direction conversion column 41 to drive the clamping roller 42 to face outwards, and then disassemble.

[0037] The grinding head assembly includes a drive motor 6 and a grinding head 7. A motor driver 61 is provided on one side of the drive motor 6, and the motor driver is installed inside the frame body 1. The grinding head 7 is fixedly engaged with the output shaft of the drive motor 6, and a protective cover 72 is provided around the grinding head 7. The drive motor 6 drives the grinding head 7 to rotate, thereby grinding the rail web.

[0038] The grinding head is a flap wheel, and the abrasive cloth layer of the grinding head is cut in a ring. The ring-cut abrasive cloth layer 73 of the grinding head 7 can significantly improve the grinding effect.

[0039] The abrasive cloth layer of the flap wheel was cut in a ring. This invention represents a creative effort. Although those skilled in the art may have thought of using a flap wheel as a grinding head, they would hardly have thought of cutting the flap wheel in a ring to improve the grinding effect, nor would they have thought of improving the structure of the flap wheel to achieve the purpose of improving the grinding effect.

[0040] For example, the technical solution with authorization announcement number CN211332805U and utility model name "a flap wheel" adds abrasive particles to the abrasive blades of the abrasive cloth layer of the flap wheel to enhance the abrasive effect.

[0041] For example, the technical solution with authorization announcement number CN216681784U and utility model name "a new type of flap polishing wheel" changes the internal structure of the flap wheel (opening heat dissipation holes inside the polishing blades) in order to improve heat dissipation and thus extend the service life of the flap wheel.

[0042] The outer contour of the grinding head 7 is arc-shaped, which allows the grinding head 7 to better fit with the rail web and improve the grinding effect.

[0043] The frame body 1 includes a base plate 101 and a left and right adjustment component 8. The upper surface of the base plate 101 is provided with a through groove 102 and a set of slide rails 103. The slide rails 103 are arranged on both sides of the through groove 102. The drive motor 6 slides with the slide rails 103 through a slide plate 104. The left and right adjustment component 8 is connected to the slide plate 104.

[0044] The left and right adjustment assembly 8 includes a left adjustment handwheel 801, a right adjustment handwheel 802, a first adjustment screw 803, and a second adjustment screw 804. The left adjustment handwheel 801 and the right adjustment handwheel 802 are respectively disposed on the left and right sides of the upper surface of the frame body 1. The left adjustment handwheel 801 and the right adjustment handwheel 802 are respectively engaged with a first drive rod 805 and a second drive rod 806. The ends of the first drive rod 805 and the second drive rod 806 are respectively provided with a first bevel drive gear 807 and a second bevel drive gear 808. One end of the lever 803 and the second adjusting screw 804 are respectively provided with a first bevel driven gear 8109 and a second bevel driven gear 810. The other ends of the first adjusting screw 803 and the second adjusting screw 804 are respectively engaged with the bearing fixing seat 812 through the bearing 811. The first adjusting screw 803 and the second adjusting screw 804 are respectively provided with a first driving block 813 and a second driving block 814. The first driving block 813 and the second driving block 814 are respectively fixedly engaged with the slide plate 104 on the left and right sides of the slide rail 103.

[0045] The working principle of the left and right adjustment components 8 is as follows: Rotating the left adjustment handwheel 801 causes the first conical drive gear 807 and the first conical driven gear 8109 to mesh and drive, thereby rotating the first adjustment screw 803. The first drive block 813 moves the slide plate 104 on the left side of the slide rail 103, thereby adjusting the drive motor 6 on the left side of the frame body 1 (moving it away from or closer to the rail web). Similarly, rotating the right adjustment handwheel 802 causes the second conical drive gear 808 and the second conical driven gear 810 to mesh and drive, thereby rotating the second adjustment screw 804. The second drive block 814 moves the slide plate 104 on the right side of the slide rail 103, thereby adjusting the drive motor 6 on the right side of the frame body 1 (moving it away from or closer to the rail web).

[0046] The left adjustment handwheel 801 and the right adjustment handwheel 802 are rotatably fitted with handles 815. The handles 815 are rotatably fitted with the left adjustment handwheel 801 and the right adjustment handwheel 802, and can be stored away when not in use, reducing space occupation and facilitating packaging and transportation.

[0047] Example 2

[0048] Except for the following technical features, the other technical features in this embodiment are the same as those in Embodiment 1.

[0049] like Figure 8As shown, the abrasive cloth layer 73 of the grinding head 7 is provided with a cutting groove 71 formed by staggered cutting. The cutting groove 71 is arranged around the outer circumference of the abrasive cloth layer 73, and each segment of the cutting groove 71 is staggered, such as... Figure 7 As shown. After the abrasive cloth layer 73 is cut, the cutting groove 71 will be left. In order to avoid the cutting grooves 71 being in the same horizontal position, which would cause grinding dead corners during the grinding process, the cutting process is carried out in segments with staggered positioning, so that each segment of the cutting groove 71 is staggered, which improves the grinding effect and avoids grinding dead corners.

[0050] The varying depths of the cut fabric layers at different locations result in an increasing arrangement of cut depths for the same spot on the rail web. At the same spot, the best polishing effect occurs either when the fabric layer is cut deeper, shallower, or at a certain depth. Therefore, after circular cutting, all spots on the rail web can be effectively polished. Staggered cutting yields the best polishing results. Table 1 compares the rust removal effects of different flap wheels on the rail web, with the polishing area being the curved surface of the rail web.

[0051] Table 1

[0052]

[0053] The above description is merely the optimal embodiment of the present invention and is not intended to limit the present invention. Any modifications or substitutions made by those skilled in the art without departing from the essence and scope of protection of the present invention should also be within the scope of protection of the present invention.

Claims

1. A rail web rust removal and grinding machine, comprising a frame body (1), characterized in that: Grinding head assemblies are provided on the left and right sides of the main frame (1). A guide assembly (2) is provided below the main frame (1). A positioning clamping device is fixedly fitted on the guide assembly (2). The positioning clamping device includes a height adjustment assembly (3) and a clamping assembly (4). A clamping assembly mounting plate (5) is fixedly fitted at the lower end of the height adjustment assembly (3). Through holes (51) are symmetrically provided at both ends of the clamping assembly mounting plate (5). Limiting grooves (52) are symmetrically provided on the sidewalls of the through holes (51). The clamping assembly (4) includes a direction conversion column. (41) and clamping roller (42), the upper end of the direction conversion column (41) is provided with a limiting block (43) that cooperates with the limiting slide groove (52), the lower end of the direction conversion column (41) passes through the through hole (51) and the hollow part of the pressure spring (44) in sequence and is fixedly cooperated with the clamping roller (42), the grinding head assembly includes a drive motor (6) and a grinding head (7), the grinding head (7) is fixedly cooperated with the output shaft of the drive motor (6), and the height adjustment assembly (3) adjusts the height of the clamping assembly (4) through the threaded screw.

2. The rail web rust removal and grinding machine according to claim 1, characterized in that: The grinding head (7) is a flap wheel, and the abrasive cloth layer of the flap wheel is cut in a ring.

3. The rail web rust removal and grinding machine according to claim 1, characterized in that: The outer contour of the grinding head (7) is arc-shaped.

4. The rail web rust removal and grinding machine according to claim 1, characterized in that: The frame body (1) includes a base plate (101) and a left and right adjustment component (8). The upper surface of the base plate (101) is provided with a through groove (102) and a set of slide rails (103). The slide rails (103) are arranged on both sides of the through groove (102). The drive motor (6) slides with the slide rails (103) through a sliding plate (104). The left and right adjustment component (8) is connected to the sliding plate (104).

5. A rail web rust removal and grinding machine according to claim 4, characterized in that: The left and right adjustment assembly (8) includes a left adjustment handwheel (801), a right adjustment handwheel (802), a first adjustment screw (803), and a second adjustment screw (804). The left adjustment handwheel (801) and the right adjustment handwheel (802) are respectively disposed on the left and right sides of the upper surface of the frame body (1). The left adjustment handwheel (801) and the right adjustment handwheel (802) are respectively equipped with a first drive rod (805) and a second drive rod (806). The ends of the first drive rod (805) and the second drive rod (806) are respectively provided with a first bevel drive gear (807) and a second bevel drive gear (808). One end of the lead screw (803) and the second adjusting lead screw (804) is respectively provided with a first bevel driven gear (809) and a second bevel driven gear (810). The other ends of the first adjusting lead screw (803) and the second adjusting lead screw (804) are respectively engaged with the bearing fixing seat (812) through the bearing (811). The first adjusting lead screw (803) and the second adjusting lead screw (804) are respectively provided with a first driving block (813) and a second driving block (814). The first driving block (813) and the second driving block (814) are respectively fixedly engaged with the slide plate (104) on the left and right sides of the slide rail (103).

6. The rail web rust removal and grinding machine according to claim 5, characterized in that: The left adjustment handwheel (801) and the right adjustment handwheel (802) are rotatably fitted with handles (815).

7. The rail web rust removal and grinding machine according to claim 1, characterized in that: The guide assembly (2) includes a front guide wheel (21) and a rear guide wheel (22), which are connected by a connecting plate (23).

8. The rail web rust removal and grinding machine according to claim 1, characterized in that: The grinding head (7) is surrounded by a protective cover (72).

9. A rail web rust removal and grinding machine according to claim 1, characterized in that: The grinding head (7) is a flap wheel. The abrasive cloth layer (73) of the flap wheel is provided with a cutting groove (71) formed by cutting. The cutting groove (71) is arranged around the outer circumference of the abrasive cloth layer (73), and each cutting groove (71) is staggered.

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