Molybdenum plating equipment for switch rail of tramcar

Abstract

The invention discloses a tramcar switch rail molybdenum plating device which comprises an electroplating pool, a molybdenum plating pool, a molybdenum plating pool, a molybdenum plating pool, a molybdenum plating pool, a molybdenum plating pool and a molybdenum plating pool. The electroplating pool contains electroplating liquid, and the side wall is provided with a containing opening for the tip of a switch rail to stretch in; the blocking mechanism is arranged on the outer side of the containing opening and comprises a first blocking block, a second blocking block, a third blocking block and a hydraulic cylinder, and the hydraulic cylinder drives the first blocking block and the second blocking block to move oppositely and get close to the third blocking block in the middle so as to seal the gap, not occupied by the switch rail, in the containing opening and reduce leakage of the electroplating liquid; and the stirring mechanism is arranged on the inner side of the containing opening and comprises a motor, a mounting shaft and a plurality of impellers, the impellers are arranged along the mounting shaft at intervals, and the motor drives the multiple impellers on the mounting shaft to rotate to stir the electroplating liquid near the containing opening so as to improve the uniformity of the molybdenum plating layer in the electroplating process. According to the equipment, local accurate molybdenum plating of the switch rail can be achieved, a wear-resistant, low-friction and corrosion-resistant molybdenum coating is formed, the load of a switch machine is remarkably reduced, and the service life of the switch rail is prolonged.

Description

Technical Field

[0001] This invention relates to the field of electroplating technology, and specifically to a molybdenum plating equipment for tram tip rails. Background Technology

[0002] The switch rail of a tram is a key component of the turnout system, and its function is to switch the direction of train travel by moving laterally. During operation, the upper surface of the switch rail is in contact with the wheels and plays a guiding role, so it must have good wear resistance and impact resistance. Its bottom surface is in constant contact with the slide plate and other basic components, especially under conditions of frequent track changes, where the number of sliding times is high and the friction intensity is high, making it very easy to cause wear, scoring, or even jamming.

[0003] In existing technologies, switch rails are typically made of ordinary carbon steel or low-alloy steel, and their bottom surfaces are not specially surface-treated, resulting in a high coefficient of friction and insufficient wear resistance. After long-term use, surface scratches, oxidation, and corrosion easily occur, which not only shortens the service life of the switch rails but also increases the drive load on the switch machine (electric switch), affecting the sensitivity and reliability of track-changing operations. Although some equipment has attempted to use lubricating grease to reduce friction, this has drawbacks such as track contamination, frequent maintenance, and inconsistent effectiveness.

[0004] Therefore, there is an urgent need for a surface strengthening technology and supporting equipment that can effectively improve the wear resistance of the bottom surface of the switch rail, reduce frictional resistance, and have corrosion resistance, in order to solve the above problems and improve the operational stability and maintenance efficiency of the turnout system. Summary of the Invention

[0005] The purpose of this invention is to provide a molybdenum plating device for tram switch rails to solve the above-mentioned defects caused by the prior art.

[0006] A molybdenum plating equipment for tram switch rails, comprising:

[0007] An electroplating tank, which contains an electroplating solution and has a placement opening on its side wall for the tip of a switch rail to be inserted.

[0008] The sealing mechanism is located on the outside of the placement opening and includes sealing block one, sealing block two, sealing block three and a hydraulic cylinder. The hydraulic cylinder drives sealing block one and sealing block two to move towards each other and approach the middle sealing block three to seal the gap in the placement opening that is not occupied by the switch rail, thereby reducing the leakage of electroplating solution.

[0009] The stirring mechanism, located inside the placement port, includes a motor, a mounting shaft, and multiple impellers. The impellers are spaced apart along the mounting shaft. The motor drives the multiple impellers on the mounting shaft to rotate, stirring the electroplating solution near the placement port to improve the uniformity of the molybdenum plating layer during the electroplating process.

[0010] Preferably, a horizontally arranged mounting strip is fixedly connected to the outer wall of the electroplating tank. Two linear guide rails are symmetrically connected to the upper surface of the mounting strip, and a slider is slidably connected to each linear guide rail. The first sealing block and the second sealing block are respectively connected to the upper side of the left and right sliders. The third sealing block is fixedly connected to the middle of the upper surface of the mounting strip. The hydraulic cylinder is installed on the outer wall of the electroplating tank through a fixing plate. Its piston rod extends vertically upward and is connected to a hinge seat. The hinge seat is hinged to the first sealing block and the second sealing block through a pair of hinge bars, driving the two to move synchronously towards or away from each other.

[0011] Preferably, the motor is mounted on the middle of the mounting strip via a fixing plate two, and the mounting shaft is connected to the output shaft of the motor via a coupling. Each impeller is coaxially fitted with an impeller housing on its outer side, and a dispersion tube is connected above all the impeller housings. The upper side of the dispersion tube is densely covered with dispersion holes for uniformly introducing the nearby electroplating solution into the electroplating area.

[0012] Preferably, a vertically extending mounting groove is provided below the placement opening, and a sealing plate is slidably disposed in the mounting groove. A pair of return springs are connected to the bottom of the sealing plate to automatically close the lower space of the placement opening when the switch rail is withdrawn.

[0013] Preferably, a through hole is provided below the mounting groove, and a sealing sleeve is provided in the through hole. The mounting shaft passes through the sealing sleeve and extends into the electroplating bath to achieve dynamic sealing.

[0014] Preferably, the surfaces of the sealing block one, sealing block two and sealing block three that contact the switch rail are provided with elastic sealing strips to enhance the sealing effect and prevent scratches on the switch rail surface.

[0015] Preferably, the mounting strip has symmetrically provided limit blocks at both ends for limiting the travel of the slider.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. Significantly reduces frictional resistance

[0018] The molybdenum coating has a low coefficient of friction, which greatly reduces the friction between the switch rail and the slide plate during the sliding process. This reduces the driving force required for the switch machine (electric switch), making the track changing action smoother and the response faster, and extending the service life of the electric switch.

[0019] 2. Significantly improves wear resistance

[0020] Molybdenum metal has high hardness and strong wear resistance. The coating formed can effectively resist wear and scratches caused by long-term sliding friction, significantly extending the service life of the switch rail and reducing the frequency of replacement and maintenance costs.

[0021] 3. Enhanced corrosion resistance

[0022] The molybdenum coating has stable chemical properties and excellent anti-oxidation and anti-corrosion properties, which can effectively prevent the bottom surface of the switch rail from rusting in humid, rainy or salt spray environments and maintain long-term operational reliability.

[0023] 4. Precise local electroplating, energy-saving and environmentally friendly.

[0024] The equipment selectively plating molybdenum only on critical sliding areas of the switch rail (such as the tip and bottom), avoiding resource waste caused by overall immersion. It uses less plating solution and consumes less energy, aligning with green manufacturing principles. Employing a hydraulically driven three-piece sealing structure, combined with elastic sealing strips and a bottom sealing plate, it achieves multiple seals, effectively preventing plating solution leakage. The equipment has a compact structure, can be used on-site, and is suitable for line maintenance scenarios.

[0025] 5. Good coating uniformity

[0026] The built-in stirring mechanism combined with the dispersion tube design ensures uniform ion concentration in the electroplating area, avoids "edge effect" or "shading effect", and obtains a high-quality molybdenum coating with consistent thickness and strong adhesion. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0028] Figure 2 This is a schematic diagram of the overall front view of the present invention.

[0029] Figure 3 This is a structural schematic diagram of an electroplating tank from a first-person perspective.

[0030] Figure 4 This is a structural schematic diagram of an electroplating tank from a second perspective.

[0031] Figure 5 This is a three-dimensional structural diagram of the sealing mechanism.

[0032] Figure 6 This is a three-dimensional structural diagram of the agitation mechanism.

[0033] in:

[0034] 10-Electroplating tank; 10a-Mounting groove; 10b-Placement opening; 10c-Through hole; 11-Sealing plate; 12-Return spring; 13-Sealing sleeve;

[0035] 20-Blocking mechanism; 201-Mounting strip; 202-Linear guide rail; 203-Slider; 204-Blocking block one; 205-Blocking block two; 206-Blocking block three; 207-Sealing strip; 208-Hydraulic cylinder; 209-Fixing plate one; 210-Hinge seat; 211-Hinge strip; 212-Limit block;

[0036] 30-Agitation mechanism; 301-Motor; 302-Fixed plate two; 303-Coupling; 304-Mounting shaft; 305-Impeller; 306-Impeller housing; 307-Dispersion tube; 307a-Dispersion hole;

[0037] 40-Point rail. Detailed Implementation

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0039] like Figures 1 to 6 As shown, a molybdenum plating equipment for tram switch rails includes:

[0040] The electroplating tank 10 contains an electroplating solution and has a placement port 10b on its side wall for the tip of the switch rail 40 to be inserted.

[0041] The sealing mechanism 20 is located on the outside of the placement port 10b and includes sealing block 1 204, sealing block 205, sealing block 3 206 and hydraulic cylinder 208. The hydraulic cylinder 208 drives sealing block 1 204 and sealing block 205 to move towards each other and approach the middle sealing block 3 206 to seal the gap in the placement port 10b that is not occupied by the switch rail, thereby reducing the leakage of electroplating solution.

[0042] The stirring mechanism 30 is located inside the placement port 10b and includes a motor 301, a mounting shaft 304 and multiple impellers 305. The impellers 305 are arranged at intervals along the mounting shaft 304. The motor 301 drives the multiple impellers 305 on the mounting shaft 304 to rotate, thereby stirring the electroplating solution near the placement port 10b to improve the uniformity of the molybdenum plating layer during the electroplating process.

[0043] In this embodiment, a horizontally arranged mounting strip 201 is fixedly connected to the outer wall of the electroplating tank 10. Two linear guide rails 202 are symmetrically connected to the upper surface of the mounting strip 201. A slider 203 is slidably connected to each linear guide rail 202. The first sealing block 204 and the second sealing block 205 are respectively connected to the upper side of the left and right sliders 203. The third sealing block 206 is fixedly connected to the middle of the upper surface of the mounting strip 201. The hydraulic cylinder 208 is installed on the outer wall of the electroplating tank 10 through a fixing plate 209. Its piston rod extends vertically upward and is connected to a hinge seat 210. The hinge seat 210 is hinged to the first sealing block 205 and the second sealing block 205 through a pair of hinge bars 211, driving the two to move synchronously towards or away from each other.

[0044] In this embodiment, the motor 301 is mounted on the middle of the mounting strip 201 via the fixing plate 302. The mounting shaft 304 is connected to the output shaft of the motor 301 via the coupling 303. Each impeller 305 is coaxially fitted with an impeller housing 306 on its outer side. All impeller housings 306 are connected to a common dispersion tube 307 above them. The upper side of the dispersion tube 307 is densely covered with dispersion holes 307a, which are used to uniformly guide the nearby electroplating solution into the electroplating area.

[0045] In this embodiment, a vertically extending mounting groove 10a is provided below the placement opening 10b. A sealing plate 11 is slidably disposed in the mounting groove 10a, and a pair of return springs 12 are connected to its bottom to automatically close the lower space of the placement opening 10b when the switch rail is withdrawn.

[0046] In this embodiment, a through hole 10c is provided below the mounting groove 10a, and a sealing sleeve 13 is provided in the through hole 10c. The mounting shaft 304 passes through the sealing sleeve 13 and extends into the electroplating tank 10 to achieve dynamic sealing.

[0047] In this embodiment, elastic sealing strips 207 are embedded on the surfaces of the sealing block 1 204, sealing block 205 and sealing block 3 206 that contact the switch rail 40, in order to enhance the sealing effect and prevent scratches on the surface of the switch rail 40.

[0048] In this embodiment, the two ends of the mounting strip 201 are symmetrically provided with limiting blocks 212 for limiting the stroke of the slider 203.

[0049] The working principle of a molybdenum plating equipment for tram switch rails:

[0050] S1: Insert the tip of the switch rail 40 to be treated horizontally into the placement port 10b on the side wall of the electroplating bath 10 until the area to be plated with molybdenum is completely immersed in the electroplating solution.

[0051] S2: Hydraulic cylinder 208 is activated, and the piston rod pushes the hinge seat 210 upward. Through the hinge bar 211, it drives the sealing block 1 204 and sealing block 205 to move along the linear guide rail 202 towards the middle sealing block 3 206, clamping the outer wall of the switch rail 40. The three work together to form an annular sealing structure, effectively sealing the space in the placement opening 10b not occupied by the switch rail, preventing the electroplating solution from leaking out.

[0052] S3: The motor 301 drives the mounting shaft 304 to drive multiple impellers 305 to rotate at high speed, which strongly agitates the electroplating solution near the placement port 10b, promotes the uniform distribution of molybdenum ions, and avoids uneven coating caused by local low concentration; at the same time, the impeller 305 transports the agitated electroplating solution to the dispersion tube 307, and sprays it evenly onto the bottom surface of the tip rail 40 through the densely distributed dispersion holes 307a on its surface, so as to achieve efficient and uniform electroplating coverage.

[0053] S4: After the set time, power supply and stirring are stopped, hydraulic cylinder 208 retracts, the sealing block is released, and switch rail 40 is smoothly pulled out. At this time, a dense and uniform molybdenum plating layer has been formed on the bottom surface of switch rail 40, which significantly improves its wear resistance and sliding performance.

[0054] Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not exhaustive. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A molybdenum plating equipment for tram switch rails, characterized in that, include: An electroplating tank (10) is filled with electroplating solution and has a placement port (10b) on its side wall for the tip of the tip rail (40) to be inserted. The sealing mechanism (20) is located on the outside of the placement port (10b) and includes sealing block one (204), sealing block two (205), sealing block three (206) and hydraulic cylinder (208). The hydraulic cylinder (208) drives sealing block one (204) and sealing block two (205) to move towards each other and approach the middle sealing block three (206) to seal the gap in the placement port (10b) not occupied by the switch rail and reduce the leakage of electroplating liquid. A stirring mechanism (30) is provided inside the placement port (10b) and includes a motor (301), a mounting shaft (304) and a plurality of impellers (305). The impellers (305) are arranged at intervals along the mounting shaft (304). The motor (301) drives the plurality of impellers (305) on the mounting shaft (304) to rotate, thereby stirring the electroplating solution near the placement port (10b) to improve the uniformity of the molybdenum plating layer during the electroplating process.

2. The molybdenum plating equipment for tram switch rails according to claim 1, characterized in that, A horizontally arranged mounting strip (201) is fixedly connected to the outer wall of the electroplating tank (10). Two linear guide rails (202) are symmetrically connected to the upper surface of the mounting strip (201). A slider (203) is slidably connected to each linear guide rail (202). The first sealing block (204) and the second sealing block (205) are respectively connected to the upper side of the left and right sliders (203). The third sealing block (206) is fixedly connected to the middle of the upper surface of the mounting strip (201). The hydraulic cylinder (208) is installed on the outer wall of the electroplating tank (10) through the first fixing plate (209). Its piston rod extends vertically upward and is connected to a hinge seat (210). The hinge seat (210) is hinged to the first sealing block (205) and the second sealing block (205) through a pair of hinge strips (211).

3. The molybdenum plating equipment for tram switch rails according to claim 2, characterized in that, The motor (301) is mounted on the middle of the mounting strip (201) via the fixing plate (302). The mounting shaft (304) is connected to the output shaft of the motor (301) via the coupling (303). Each impeller (305) is coaxially fitted with an impeller housing (306) on its outer side. All impeller housings (306) are connected to a common dispersion tube (307) above them. The upper side of the dispersion tube (307) is densely covered with dispersion holes (307a).

4. The molybdenum plating equipment for tram switch rails according to claim 1, characterized in that, Below the placement port (10b) is a vertically extending mounting groove (10a), in which a sealing plate (11) is slidably disposed, and a pair of return springs (12) are connected to its bottom.

5. The molybdenum plating equipment for tram switch rails according to claim 4, characterized in that, The mounting groove (10a) is provided with a through hole (10c) below it, and a sealing sleeve (13) is provided in the through hole (10c). The mounting shaft (304) passes through the sealing sleeve (13) and extends into the electroplating tank (10).

6. The molybdenum plating equipment for tram switch rails according to claim 1, characterized in that, Elastic sealing strips (207) are embedded on the surfaces of the sealing blocks 1 (204), 2 (205) and 3 (206) that contact the switch rail (40).

7. The molybdenum plating equipment for tram switch rails according to claim 2, characterized in that, The mounting strip (201) is provided with symmetrical limit blocks (212) at both ends for limiting the stroke of the slider (203).

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