Plating process and system for railway track embedded part

Abstract

The invention discloses a plating process and system for a railway track embedded part, and the process comprises the following steps: S1, preparing three hundred to four hundred bolt sleeves with cleaned inner and outer walls, and clamping the bolt sleeves on the outer sides of a plurality of groups of bearing sheets mounted on a hanging rack; according to the plating process and system for the railway track embedded part, the flow rate of liquid before the liquid enters the inner wall of the bolt sleeve is increased through the multiple gathering inclined pieces and the gathering ring, and the liquid is decelerated after reaching the inner sides of the bearing pieces arranged circumferentially so as to guarantee sufficient slow flow of alloy elements; the separation arc sheet is matched to guide the pool liquid to normally flow on the outer wall of the bolt sleeve, and the pool liquid flowing on the outer wall of the bolt sleeve is supplemented into the inner wall of the bolt sleeve by utilizing the flow velocity difference, so that the thread bulge is plated with more alloy elements, the purposes of no excess of the outer side wall and sufficient amount of the inner side wall are achieved, and the plating efficiency of the inner wall and the outer wall of the bolt sleeve is improved.

Description

Technical Field

[0001] The invention relates to the technical field of railway embedded bolt sleeve plating, and in particular to a plating process and system for railway track embedded parts. Background Art

[0002] Railway embedded parts usually contain a large number of bolt sleeves for fixing bolts, and adopt the method of multi-element alloy co-infiltration, so that the bolt sleeve is placed in a molten salt bath containing multiple alloy elements for plating treatment to ensure the anti-corrosion effect of the bolt sleeve and increase the tightness of the threaded connection between the bolt and the bolt.

[0003] According to the publication (announcement) number: CN118979212B, publication (announcement) date: 2024-12-27, a heat exchanger pipe galvanizing tank is disclosed.

[0004] In the prior art including the above patents, the bearing component for placing multiple bolt sleeves in a pool for plating is usually composed of a metal frame on which multiple vertical rods with a diameter smaller than the inner wall diameter of the bolt sleeves are arranged, and the bolt sleeves are vertically inserted outside the rods to ensure that the inner and outer walls of the bolt sleeves are in contact with the liquid. However, due to the presence of spiral protrusions on the inner wall of the bolt sleeves, and the amount of alloy elements consumed by these protrusions is greater, the traditional bearing frame can only meet the requirement that the inner wall of the bolt sleeves is completely plated over time, but the waiting time will inevitably make the outer wall of the bolt sleeves The wall coating becomes thicker and is in contact with the rod on the frame for too long, which will cause some alloy elements to solidify between the outer wall of the bolt sleeve and the frame, causing the coating to be damaged when the bolt sleeve is removed. At the same time, during the plating period, the alloy elements contained in the salt bath in the inner wall of the bolt sleeve will gradually be consumed, accompanied by a decrease in the concentration of alloy elements. Even if the salt bath in the pool is in a flowing state, the alloy elements flowing to the inner wall of the bolt sleeve cannot be sufficiently guaranteed, further affecting the plating effect of the alloy elements on the threaded protrusions. At the same time, the plating cycle will increase, reducing the plating efficiency of the production line. Summary of the invention

[0005] The object of the present invention is to provide a plating process and system for railway track embedded parts, aiming to solve the above-mentioned problems.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A plating process for railway track embedded parts, the process comprising the following steps: S1. Prepare 300 to 400 bolt sleeves after cleaning the inner and outer walls, and clamp the outer sides of multiple groups of load-bearing sheets installed on the rack; S2, selecting 10-20 parts by weight of chromium element, 8-16 parts by weight of nickel element, and 7-15 parts by weight of molybdenum element to mix in proportion to obtain alloy powder, and adding the powder to the salt bath for dispersion; S3, start the heating and heat preservation system in the salt bath to raise the salt bath liquid of alloy elements to 800°C-1000°C co-penetration temperature; S4. Use a gantry or a mobile guide frame to place the bracket equipped with bolt sleeves into a predetermined position in the salt bath, and let it stand for 10 minutes to 20 minutes; S5, start the liquid circulation flow system diagonally distributed on the salt bath pool, so that the salt bath liquid of the alloy element is diverted by the gathering piece, and the salt bath liquid flows axially on the inner and outer walls of the bolt casing, and lasts for 1 hour to 1.5 hours; S6, turn off the heating and insulation system, and use the cooling system to cool the bolt sleeve along with the salt bath to room temperature; S7. Finally, remove the bolt sleeve from the salt bath and remove it from the bracket for flushing.

[0007] A plating system for railway track embedded parts, including a device for realizing the above-mentioned plating process for railway track embedded parts, and also including a hanging ring fixedly installed on a hanger, a convergence ring with one port connected to the inner wall of a bolt sleeve axially sliding on the hanging ring, and a gathering inclined sheet arranged circumferentially and distributed in a trumpet shape for introducing a salt bath liquid fixedly installed on the other side port of the convergence ring; A separation arc piece is fixedly installed at the end of the gathering inclined piece, which uses an arc-shaped ridge to drain the salt bath liquid to flow on the outer wall of the bolt sleeve, and a liquid infusion hole connected to the inner side of the separation arc piece is opened on the convergence ring; The ends of the plurality of separation arc pieces are fixedly mounted with connection rings that abut against the hanger, and when the salt bath liquid impacts the arc-shaped raised surface of the separation arc piece, the raised surface tends to be flat, so that the gathered oblique pieces are closed together and the infusion hole is drained in the reverse direction.

[0008] Preferably, a clamping seat pivotally connected to the supporting plate is rotatably provided on the hanging ring, and the clamping seat relatively moves with a clamping cover having an oblique ring groove at the end thereof, and the oblique ring groove is slidably matched with the end of the supporting plate to make the inclination angle of the other end of the supporting plate adjustable.

[0009] Preferably, a guide rod penetrating through the hanging ring and sliding is fixedly mounted on the clamp cover, and the gathering oblique piece and the separation arc piece take turns to push the guide rod to move.

[0010] Preferably, a plurality of elastic clips intermittently arranged at the pivotal position are rotatably provided on the clamping seat, and a limiting piece cooperating with the elastic clip to clamp the bolt sleeve is fixedly installed at the end of the bearing piece.

[0011] Preferably, an elastic end is provided at the end of the bearing plate located inside the oblique annular groove, and the elastic end exerts a reaction force on the guide rod under force accumulation.

[0012] Preferably, a driven piece which rotates due to the abutment of the end of the clamp cover is fixedly mounted on the elastic clip.

[0013] Preferably, the distance between the elastic clip and the limiting plate is adjustable.

[0014] Preferably, the bearing piece is provided with a twisting piece that contacts the inner wall of the bolt sleeve, and a side piece for storing force in a default state is fixedly installed at the pivot position of the bearing piece; When the twisting piece is active, it cooperates with the side piece to release the torque in the direction of the arc surface of the twisting piece.

[0015] Preferably, an arc-shaped slide groove is provided in the oblique annular groove and is slidably matched with the elastic end, and the slide groove has a low position and a high position for switching, and enables the twisting plate to reciprocate on the axis of the bolt sleeve.

[0016] In the above technical solution, the present invention provides a plating process and system for railway track embedded parts, which has the following beneficial effects: The liquid flow rate before entering the bolt casing is increased by multiple convergent bevel plates and convergence rings, and the liquid flow rate is slowed down after reaching the inner side of the circumferentially arranged bearing plates, so that the alloy elements used for the inner wall plating of the bolt casing are sufficient and flow slowly, and then the end of the separation arc plate is expanded outward to guide the pool liquid to flow normally on the outer wall of the bolt casing to reduce the residence time of the alloy elements on the outside, and the flow rate difference is used to make the pool liquid flowing on the outer wall of the bolt casing replenish the inner wall of the bolt casing, so that the thread protrusion is plated with more alloy elements, so as to achieve the purpose of no excess on the outer wall and sufficient on the inner wall, thereby improving the plating efficiency of the inner and outer walls of the bolt casing, and when the bolt casing is finishing the plating, the liquid inlet is accelerated The flow rate is used to compress and deform the separation arc piece, and drive the convergence inclined piece to gradually narrow the bell mouth, so that the flow rate of the liquid flowing to the inner wall of the bolt casing is reduced, and then the flow rate difference is used to transport the alloy elements flowing to the inner wall of the bolt casing to the outer wall of the bolt casing. On the one hand, it can reduce the residence time of the alloy elements on the outer wall of the bolt casing, and on the other hand, it is used to reduce the amount of alloy elements on the inner wall of the bolt casing. At this point, the inner and outer walls of the bolt casing, which are nearing the end of plating, can be treated with alloy element reduction, ensuring that the plating amount of the inner and outer walls of the bolt casing is stable, realizing the acceleration of the plating rate and plating quality of the bolt casing, and ensuring the corrosion resistance of the bolt casing and the production line processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the arrangement of a molten salt bath and a carrier frame with a hanger installed at its port provided in an embodiment of the present invention; Figure 2 A schematic diagram of a top view of a molten salt bath provided in an embodiment of the present invention and a carrier frame arrangement with a hanger mounted on its port; Figure 3 A schematic diagram of the arrangement of the racks on the carrier provided in an embodiment of the present invention; Figure 4 A schematic diagram of assembling a portion of the hanger, the gathering piece, and the twisting piece provided in an embodiment of the present invention; Figure 5 A schematic diagram of a partial cross-sectional view of the side portion of the assembly position of a partial rack, a gathering piece, and a twisting piece provided in an embodiment of the present invention; Figure 6 A schematic top cross-sectional view of the assembly of a hanging ring, a gathering piece, a clamping seat, and a twisting piece provided in an embodiment of the present invention; Figure 7 for Figure 6 A magnified schematic diagram of point A; Figure 8 for Figure 6 An enlarged schematic diagram of point B; Fig. 9 A schematic diagram of a partial position of the elastic end sliding in the annular groove provided by an embodiment of the present invention after the plane is unfolded; Fig.10 A schematic diagram of an exploded right side view of a gathering piece, a hanging ring, a hoop cover, a clamping seat, and a twisting piece provided in an embodiment of the present invention; Fig.11 A schematic diagram of an exploded left side perspective of a gathering piece, a hanging ring, a clamping cover, and a clamping seat provided in an embodiment of the present invention.

[0019] Description of reference numerals: 1. Liquid pool; 11. Liquid inlet; 12. Rounded end; 2. Carrying frame; 3. Hanging frame; 31. Hanging ring; 4. Gathering piece; 41. Converging ring; 42. Gathering oblique piece; 43. Separating arc piece; 44. Connecting ring; 45. Infusion hole; 46. Slide; 5. Clamping seat; 51. Guard ring; 52. Elastic clip; 521. Driven piece; 6. Carrying piece; 61. Twisting piece; 62. Limiting piece; 63. Rotating shaft; 64. Elastic end; 65. Side piece; 7. Hoop cover; 71. Guide rod; 72. Push head; 73. Oblique ring groove; 74. Slide groove. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Embodiment 1

[0021] A plating process for railway track embedded parts, the process comprising the following steps: S1, prepare 300 to 400 bolt sleeves after cleaning the inner and outer walls, and fix them on the outer sides of multiple groups of circumferentially arranged bearing plates 6 installed on the hanger 3, and then use the limiting plates 62 and the elastic clamping pieces 52 to clamp the bolt sleeves; S2, selecting 10-20 parts by weight of chromium element, 8-16 parts by weight of nickel element, and 7-15 parts by weight of molybdenum element to mix in proportion to obtain alloy powder, and adding the powder to the salt bath for dispersion; S3, start the heating and heat preservation system in the salt bath to raise the salt bath liquid of alloy elements to 800°C-1000°C co-penetration temperature; S4, using a gantry or a mobile guide frame to place the hanger 3 equipped with bolt sleeves into a predetermined position in the salt bath, and let it stand for 10 minutes to 20 minutes; S5. Start the liquid circulation system in the diagonally distributed liquid inlet 11 on the salt bath pool, so that the salt bath liquid of the alloy element is diverted by the gathering piece 4, and the pool liquid enters the convergence circle 41 from the position of the retracted inclined piece 42 when passing through the hanger 3, so that the liquid flow rate is increased until it reaches the inner side of the circumferentially arranged carrier sheet 6 and then slows down, so that the amount of liquid used for the inner wall plating of the bolt casing flows slowly and sufficiently, and the alloy elements are slowly plated on the threaded protrusion, while the pool liquid guided by the outward expansion of the end of the separation arc piece 43 maintains a normal flow rate on the outer wall of the bolt casing, which is used to reduce the residence time of the liquid and avoid excessive alloy element plating on the outer wall of the bolt casing. In the process, the liquid on the inner side of the separation arc piece 43 is drawn into the convergence circle 41 by the infusion hole 45 to increase the amount of liquid entering the inner wall of the bolt casing, thereby increasing the concentration of the plated alloy elements and ensuring the amount of alloy elements consumed by the threaded protrusion. At the same time, the amount of the outer wall of the bolt casing is reduced, further The step is to reduce the situation where the outer wall of the bolt sleeve is too thick, and the salt bath liquid is made to flow axially on the inner and outer walls of the bolt sleeve for 1 hour to 1.5 hours, and the flow rate in the liquid inlet 11 is increased during the finishing process to compress and deform the separation arc piece 43, and the bell mouth is gradually reduced by closing the inclined piece 42, so that the amount of pool liquid flowing to the inner wall of the bolt sleeve is gradually reduced, so that the pool liquid originally used to flow to the inner wall of the bolt sleeve can only flow quickly to the outer wall of the bolt sleeve at the outward expansion position of the end of the separation arc piece 43. On the one hand, it can reduce the residence time of the alloy elements on the outer wall of the bolt sleeve, and on the other hand, the inner side of the separation arc piece 43 will be accelerated by the liquid flow and the liquid in the convergence circle 41 will be drawn from the infusion hole 45, and the liquid flow rate in the convergence circle 41 will be reduced, which is used to reduce the amount of alloy elements on the inner wall of the bolt sleeve. At this point, the inner and outer walls of the bolt sleeve whose plating is close to the finishing work can be treated with the reduction of alloy elements, ensuring the stable amount of plating on the inner and outer walls of the bolt sleeve; S6, turn off the heating and insulation system, and use the cooling system to cool the bolt sleeve along with the salt bath to room temperature; S7. Finally, take out the bolt sleeve from the salt bath and remove it from the hanger 3 for washing. Embodiment 2

[0022] like Figure 1-11 As shown, a plating system for railway track embedded parts includes a system for realizing the above-mentioned plating process for railway track embedded parts, and also includes a hanging ring 31 fixedly installed on a hanger 3, a convergence ring 41 with one port connected to the inner wall of a bolt sleeve is axially slidable on the hanging ring 31, and a gathering bevel 42 arranged circumferentially and distributed in a trumpet shape to introduce a salt bath is fixedly installed on the other side port of the convergence ring 41; A separation arc piece 43 is fixedly installed at the end of the gathering inclined piece 42, which uses an arc-shaped ridge to guide the salt bath to flow on the outer wall of the bolt sleeve, and a liquid infusion hole 45 connected to the inner side of the separation arc piece 43 is opened on the convergence ring 41; The ends of the plurality of separation arc pieces 43 are fixedly mounted with connection rings 44 that abut against the hanger 3, and when the salt bath liquid impacts the arc-shaped raised surface of the separation arc piece 43, the raised surface tends to be flat, so that the gathering inclined pieces 42 are closed together and the infusion hole 45 is reversely drained.

[0023] Specifically, liquid inlets 11 are installed on both sides of the liquid pool 1 for storing the salt bath liquid containing alloy elements (impellers for conveying liquid and pipes for adding alloy elements are installed inside, which are prior art and will not be described in detail here), and the other two diagonal inner walls are rounded to form rounded ends 12 for fast-flowing salt bath liquid, and multiple hangers 3 are installed on the L-shaped supporting frame 2, so that the supporting frame 2 driven by mechanical power (motor drive, the power and the movement mode of converting power are prior art and will not be described in detail here) drives the multiple hangers 3 downward to be immersed in the salt bath liquid, and the supporting frames 2 are equidistantly arranged toward the central discharge port of the liquid pool 1 to ensure the amount of bolt sleeves loaded on the hangers 3.

[0024] Furthermore, when the hanger 3 is installed on the L-shaped carrier 2, it follows the flow direction of the liquid in the liquid pool 1, that is, the multiple hanging rings 31 can carry the bolt sleeves parallel to the liquid flow direction, so that the inner and outer walls of all the bolt sleeves can be plated by the pool liquid synchronously, and the hanging rings 31 on adjacent hangers 3 are staggered up and down (such as Figure 3 The purpose is to reduce the problem of the bolt sleeves on the adjacent hangers 3 blocking the liquid delivery during the plating process.

[0025] Furthermore, a slide bar 46 is fixedly installed on the circumference of the side wall of the convergence ring 41, and a sliding hole is opened on the hanging ring 31 for the slide bar 46 to slide axially, and the circumferentially arranged infusion holes 45 are moved on one end surface of the hanging ring 31 to prevent the infusion holes 45 from being blocked by the inner wall of the hanging ring 31 and unable to transport liquid.

[0026] Furthermore, the gathering bevel piece 42 and the separation arc piece 43 are both made of elastic metal sheets (the material is corrosion-resistant and high-temperature-resistant, the prior art, and will not be elaborated here), so that the gathering bevel piece 42 can change the flow of liquid under the pressure of the separation arc piece 43, and the connecting ring 44 is located at the outwardly expanded end position of multiple separation arc pieces 43, and a notch is provided at the contact position between the connecting ring 44 and the bracket 3, which is used to increase the anti-deviating ability during the resistance limit, and at the same time, under the pressure limit condition, the multiple separation arc pieces 43 can be deformed and flattened synchronously.

[0027] Furthermore, gaps (the area of ​​which is less than one sixth of the area for guiding liquid flow) are provided between adjacent convergent oblique plates 42 and separation arc plates 43 for the two to change their states, and the interference of the gaps on liquid transportation is negligible, which corresponds to the normal effect of the original guided liquid transportation.

[0028] The bolt sleeve sent into the salt bath by the hanger 3 is first plated normally, and the ring surfaces of the two ends of the bolt sleeve are plated. As time goes by, the alloy elements consumed by the inner wall of the bolt sleeve gradually increase. Then, the liquid inlet 11 is opened to allow the liquid in the pool to flow in a specific direction, and the pool liquid is allowed to enter the convergence circle 41 from the position of the retracted inclined sheet 42 when passing through the hanger 3, so that the liquid flow rate is increased until it reaches the inner side of the circumferentially arranged carrier sheet 6 and then decelerates, so that the amount of liquid used for the inner wall plating of the bolt sleeve is The liquid pool 43 is guided by the end of the separation arc piece 43 to maintain a normal flow rate on the outer wall of the bolt sleeve, which is used to reduce the residence time of the liquid and avoid excessive alloy element plating on the outer wall of the bolt sleeve. In the process, the liquid inside the separation arc piece 43 is drawn into the convergence circle 41 by the infusion hole 45 to increase the amount of liquid entering the inner wall of the bolt sleeve, thereby increasing the concentration of the plated alloy element and ensuring the amount of alloy element consumed by the threaded protrusion. As the amount of the outer wall of the bolt sleeve is reduced, the situation of excessive plating thickness of the outer wall of the bolt sleeve is further reduced. When the bolt sleeve is subjected to the final plating work, the flow rate of the liquid inlet 11 is accelerated to compress and deform the separation arc piece 43, and the bell mouth is gradually reduced along with the closing of the inclined piece 42, so that the amount of pool liquid flowing to the inner wall of the bolt sleeve is gradually reduced, so that the pool liquid originally used to flow to the inner wall of the bolt sleeve can only quickly flow to the outer wall of the bolt sleeve at the outward expansion position of the end of the separation arc piece 43, which can reduce the alloy elements on the outer wall of the bolt sleeve. On the other hand, the residence time of the wall will accelerate the flow of liquid on the inner side of the separation arc piece 43, and the liquid will be drawn into the convergence circle 41 from the infusion hole 45, and the flow rate of the liquid in the convergence circle 41 will be reduced, which is used to reduce the amount of alloy elements on the inner wall of the bolt sleeve. At this time, the inner and outer walls of the bolt sleeve, which is nearing the end of plating, can be treated with alloy elements to reduce the amount of plating on the inner and outer walls of the bolt sleeve, ensuring a stable amount of plating on the inner and outer walls of the bolt sleeve, and accelerating the plating rate and plating quality of the bolt sleeve, which is used to ensure the anti-corrosion ability of the bolt sleeve and the production line processing efficiency.

[0029] As an embodiment further provided by the present invention, a clamping seat 5 pivotally connected to the supporting plate 6 is rotatably provided on the hanging ring 31, and the clamping seat 5 is relatively movable with a clamp cover 7 having an oblique ring groove 73 at the end thereof, and the oblique ring groove 73 is slidably matched with the end of the supporting plate 6 to make the inclination angle of the other end of the supporting plate 6 adjustable.

[0030] Specifically, the cross-section of the clamping seat 5 is in the shape of a right-angled triangle, and a guard ring 51 is fixedly installed at the top corner and is rotatably connected to the end face of the hanging ring 31. The purpose is to extend the sleeve length with the convergence ring 41 to avoid liquid diversion and leakage. At the same time, an annular recess is also provided at the rotating port of the guard ring 51 to accommodate the sliding strip 46 after sliding, thereby increasing the movement stability of the convergence ring 41.

[0031] Furthermore, the bearing plate 6 has a short section and a long section, and a rotating shaft 63 (i.e., a pivot position) is fixedly installed between the two sections. The short section slides in the oblique annular groove 73, and the long section is used to support the inner wall of the bolt sleeve. The cross-section of the oblique annular groove 73 maintains a predetermined angle with the axis of the convergence ring 41, so as to facilitate the short section to be driven by the inclined sliding to make the bearing plate 6 rotate around the pivot position.

[0032] When the clamp cover 7 approaches the clamping seat 5, the inclined surface of the inner wall of the inclined ring groove 73 is used to force the long sections of the bearing piece 6 to approach each other and present a table shape, so that the smaller bottom surface of the table has space for the sleeve of the bolt sleeve, and after the clamp cover 7 is reset, the multiple bearing pieces 6 in the columnar shape are reset to the inner wall of the bolt sleeve to fix and limit the bolt sleeve, thereby realizing the installation of the bolt sleeve.

[0033] As another embodiment further provided by the present invention, a guide rod 71 is fixedly mounted on the clamp cover 7 and slides through the hanging ring 31 , and the movable lower retracting inclined piece 42 and the separating arc piece 43 take turns to push the guide rod 71 to move.

[0034] Specifically, a push head 72 is fixedly mounted at the end of the guide rod 71 to abut against the gap between the adjacent gathered inclined sheets 42 , and the abutting position of the push head 72 is rounded to reduce friction during the sliding process.

[0035] Before loading the bolt sleeve, manually press the connection position of the separation arc piece 43 and the gathering bevel piece 42 to the maximum deformation degree, that is, the gathering bevel piece 42 presents a pointed cone shape. At this time, the push head 72 originally contacts the position of the gathering bevel piece 42 and switches to the separation arc piece 43 under the flatness, and makes the end of the clamp cover 7 with the maximum moving stroke fit on the table of the clamping seat 5, so as to maximize the installation gap left by the long sections of multiple load-bearing sheets 6, so that the bolt sleeve can be more easily inserted and installed on the bracket 3 for plating.

[0036] As another embodiment further provided by the present invention, a plurality of elastic clips 52 intermittently arranged at the pivotal positions are rotatably provided on the clamping seat 5, and a limiting piece 62 is fixedly installed at the end of the bearing piece 6 to cooperate with the elastic clip 52 to clamp the bolt sleeve.

[0037] Specifically, the limiting piece 62 with a predetermined inclination angle and twisted state is fixedly installed at the end of the long section, and the circumferentially arranged limiting pieces 62 are distributed in the shape of impeller blades, so as to redirect the flowing liquid and apply torque to the supporting piece 6 .

[0038] When the bearing plate 6 is deflected to the state with the maximum gap, the end of the limiting plate 62 is closer to the axis of the bolt sleeve than the rotation position of the rotating shaft 63, so that the limiting plate 62 does not interfere with the installation of the bolt sleeve. At the same time, the end face of the limiting plate 62 under reset abuts against one end of the bolt sleeve, and the other end of the bolt sleeve is abutted by the inner side face of the elastic clip 52, which is used to clamp the two ends of the bolt sleeve, further enhance the fixing effect of the bolt sleeve, and avoid the problem of falling off.

[0039] As another embodiment further provided by the present invention, an elastic end 64 is provided at the end of the bearing plate 6 located inside the oblique annular groove 73 , and the elastic end 64 reacts the force stored on the guide rod 71 .

[0040] Specifically, the elastic end 64 is an elastic metal sheet installed at the end of the short section, and the elastic end 64 in a default state has a bulge in the direction of rotation of the short section, so that the elastic end 64 under force is used to assist the long section to close together.

[0041] Furthermore, the whole composed of the guide rod 71 and the clamp cover 7 is clamped by the elastic end 64 and the gathering bevel piece 42 and the separation arc piece 43. On the one hand, the clamp cover 7 can be supported and limited by the hanging ring 31 during the axial movement, and the movement is more stable. On the other hand, there is no other elastic interference, so that the impact force and the force stored in the elastic end 64 are transmitted to each other more obviously, which makes up for the problem of insufficient impact force pressure.

[0042] The guide rod 71 under the impact force squeezes the elastic end 64 to store force, and the elastic end 64 under the stored force reacts on the guide rod 71, so that the push head 72 slides on the retracted inclined piece 42 at the contact position, so as to speed up the push switching of the push head 72 to adapt to the separation arc piece 43, thereby shortening the time for the retracted inclined piece 42 to close together and accelerating the flow resistance effect on the inner wall of the bolt sleeve. However, the impact force of the water flow does not bring the retracted inclined piece 42 together into a pointed cone shape, so as to ensure that the bolt sleeve is located on the bearing piece 6 and does not separate. Secondly, after the retracted inclined piece 42 is closed together, the gathering piece 4 that loses the main amount of liquid makes the liquid flow out from the outside of the connecting ring 44 away, so as to transfer a large amount of liquid to the rear bolt sleeve, and under the dual effects of the gradual increase in pressure transmission and the staggered arrangement of the hanging ring 31, the rear bolt sleeve is sequentially carried out the finishing work of the inner and outer wall liquid transportation, thereby improving the batch processing efficiency of the bolt sleeve.

[0043] As another embodiment further provided by the present invention, a driven piece 521 which is rotated due to the abutment of the end of the clamp cover 7 is fixedly mounted on the elastic clip 52 .

[0044] Specifically, a notch is provided at the bottom corner of the clamping seat 5 for the driven plate 521 to move, and the driven plate 521 in the default state is tilted from the notch (a torsion spring is installed at the rotating position, and the torsion spring and its installation method are existing technologies and are not described here) to facilitate the push-to-joint work, and the driven plate 521 is specifically a hard metal plate.

[0045] By fitting the end of the clamp cover 7 with an oblique cut into the table surface of the clamp seat 5 and making the annular tip of the end of the clamp cover 7 push the driven plate 521 into the notch, the end of the elastic clip 52 is moved away from the axis of the bolt sleeve so as to be in an open state to welcome the installation of the bolt sleeve and clamp the bolt sleeve after resetting.

[0046] As another embodiment further provided by the present invention, the distance between the movable lower elastic clip 52 and the limiting piece 62 is adjustable.

[0047] Specifically, the resilient clip 52 and the limiting piece 62 after reset only provide contact clamping for the two ends of the bolt sleeve, so that the elastic clip 52 and the limiting piece 62 are not squeezed and deformed during the clamping process.

[0048] The elastic clip 52 and the limiting piece 62 are moved away from each other under the impact of the liquid, so that the bolt sleeve loses its clamping fixation. At this time, the bolt sleeve can rotate and move axially freely on the bearing piece 6, and the limiting piece 62 distributed in an impeller shape is used to change the flow direction of the liquid around the bolt sleeve, so that the redirecting force on the liquid is transmitted to the bolt sleeve, and the position of the bolt sleeve is changed, so as to avoid the plating solidification of the bolt sleeve and the clamping fixation position, so as to avoid the damage of the side wall plating layer during the removal of the bolt sleeve.

[0049] As another embodiment further provided by the present invention, a twisting piece 61 is provided on the bearing piece 6 to abut against the inner wall of the bolt sleeve, and a side piece 65 storing force in a default state is fixedly installed at the pivot position of the bearing piece 6; The movable lower twisting piece 61 cooperates with the side piece 65 to release the torque in the direction of the arc surface of the twisting piece 61 .

[0050] Specifically, the twisted sheet 61 is located at the end of the long section, and the end face of the twisted sheet 61 gradually twisted toward the axis can reduce the contact surface with the inner wall of the bolt sleeve, thereby reducing the area of ​​the solidified connection and making the effective plating area of ​​the inner wall of the bolt sleeve larger.

[0051] Furthermore, the side pieces 65 are symmetrically arranged on both sides of the rotating shaft 63 , and the side pieces 65 in the default state are squeezed and bent when installed at the pivot position, so that the side pieces 65 under force storage transfer force to the bending surface direction of the twisting piece 61 .

[0052] The inner wall of the bolt sleeve is squeezed and thrusted by the twisted sheet 61 with a specified arc surface direction. Figure 5 The direction indicated by the middle arrow is used to make the bolt sleeve rotate circumferentially in the specified direction so as to switch the position of the bolt sleeve, so that the position originally blocked by the interference begins to be plated with alloy elements, thereby ensuring the plating efficiency of the inner wall of the bolt sleeve. Similarly, for the interference position of the two ends of the bolt sleeve, the gap between the adjacent elastic clips 52 and the gap between the adjacent limiting plates 62 are used to cope with the plating work after the position is changed, so that the plating efficiency of the bolt sleeve is more efficient.

[0053] As another embodiment further provided by the present invention, an arc-shaped slide groove 74 is provided in the oblique annular groove 73 to slide with the elastic end 64, and the slide groove 74 has a low position and a high position for switching, and enables the twisting piece 61 to reciprocate on the axis of the bolt sleeve.

[0054] Specifically, the elastic end 64 is located at the lower position of the slide groove 74 (the deepest position of the oblique ring groove 73) in the default state, so that the elastic end 64 is not easy to slide to the high position before the force is accumulated, and the elastic end 64 can also deform faster. Therefore, during the manual pressing process, the supporting sheet 6 can concentrate on and quickly close the installation of the bolt sleeve.

[0055] Furthermore, since the oblique annular groove 73 provides the elastic end 64 with space for bending and deformation, when the elastic end 64 actively deforms, the ability of the short section to rotate driven by the thrust alone is smaller than the driving ability of the sum of the thrust and the deformation force.

[0056] The liquid flow limiting plate 62 guides the clamping seat 5 to have a certain torsional force, and during the rotation, the elastic end 64 and the wavy slide groove 74 are slidably matched (such as Fig. 9As shown), when it reaches the high position, the elastic end 64 is compressed and deformed again, so that the reaction force accelerates the switching of the separation arc piece 43, and the bearing piece 6 under rotation can also actively change the contact position with the inner wall of the bolt sleeve to ensure the plating effect of the threaded protrusion. At the same time, the bending change of the elastic end 64 when switching between the low position and the high position during the rotation process, the power storage effect of the short section at this time is greater than the thrust received by the clamp cover 7, so that the long section reciprocates away from and close to the axis of the bolt sleeve, but generally in the direction close to the axis. Therefore, the process is accompanied by a small radial vibration of the long section, which is used to improve the ability to switch the position of the bolt sleeve and make the bolt sleeve plating efficiency higher.

[0057] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A plating process for railway track embedded parts, characterized in that: The process comprises the following steps: S1, prepare 300 to 400 bolt sleeves after cleaning the inner and outer walls, and clamp the outer sides of multiple groups of bearing plates (6) installed on the bracket (3); S2, selecting 10-20 parts by weight of chromium element, 8-16 parts by weight of nickel element, and 7-15 parts by weight of molybdenum element to mix in proportion to obtain alloy powder, and adding the powder to the salt bath for dispersion; S3, start the heating and heat preservation system in the salt bath to raise the salt bath liquid of alloy elements to 800°C-1000°C co-penetration temperature; S4, using a gantry or a mobile guide frame to place the hanger (3) equipped with the bolt sleeve into a predetermined position in the salt bath, and let it stand for 10 minutes to 20 minutes; S5, starting the liquid circulation flow system diagonally distributed on the salt bath pool, so that the salt bath liquid of the alloy element is diverted from the gathering member (4) and the salt bath liquid flows axially on the inner and outer walls of the bolt casing, and continues for 1 hour to 1.5 hours; S6, turn off the heating and insulation system, and use the cooling system to cool the bolt sleeve along with the salt bath to room temperature; S7. Finally, remove the bolt sleeve from the salt bath and remove it from the bracket (3) for flushing.

2. A plating system for railway track embedded parts, comprising a plating process for railway track embedded parts according to claim 1, characterized in that: It also includes a hanging ring (31) fixedly mounted on the hanging bracket (3), a converging ring (41) having one port connected to the inner wall of the bolt sleeve axially sliding on the hanging ring (31), and a gathering bevel (42) arranged circumferentially and distributed in a trumpet shape for introducing a salt bath liquid fixedly mounted on the other port of the converging ring (41); A separation arc piece (43) having an arc-shaped raised surface for guiding the salt bath liquid to flow on the outer wall of the bolt sleeve is fixedly installed at the end of the gathering inclined piece (42), and a liquid infusion hole (45) connected to the inner side of the separation arc piece (43) is opened on the converging ring (41); The ends of the plurality of separation arc pieces (43) are fixedly mounted with connection rings (44) that abut against the hanger (3), and when the salt bath liquid impacts the arc-shaped raised surface of the separation arc piece (43), the raised surface tends to be flat, so that the closing inclined pieces (42) are closed together, and the infusion hole (45) is reversely drained.

3. A plating system for railway track embedded parts according to claim 2, characterized in that: A clamping seat (5) pivotally connected to the bearing plate (6) is rotatably provided on the hanging ring (31), and the clamping seat (5) is relatively movable with a clamping cover (7) having an oblique annular groove (73) at the end thereof, and the oblique annular groove (73) is slidably matched with the end of the bearing plate (6) so that the inclination angle of the other end of the bearing plate (6) can be adjusted.

4. A plating system for railway track embedded parts according to claim 3, characterized in that: A guide rod (71) penetrating the hanging ring (31) and slidingly connected to the hoop cover (7) is fixedly mounted on the hoop cover (7), and the movable retracting inclined plate (42) and the separating arc plate (43) take over to push the guide rod (71) to move.

5. A plating system for railway track embedded parts according to claim 3, characterized in that: The clamping seat (5) is rotatably provided with a plurality of elastic clips (52) intermittently arranged at the pivotal position, and the end of the bearing plate (6) is fixedly provided with a limiting plate (62) which cooperates with the elastic clip (52) to clamp the bolt sleeve.

6. A plating system for railway track embedded parts according to claim 4, characterized in that: An elastic end (64) is provided at the end of the bearing sheet (6) located inside the oblique annular groove (73), and the elastic end (64) exerts a reaction force on the guide rod (71) under force accumulation.

7. A plating system for railway track embedded parts according to claim 5, characterized in that: A driven piece (521) that rotates by abutting against the end of the clamp cover (7) is fixedly mounted on the elastic clip (52).

8. A plating system for railway track embedded parts according to claim 7, characterized in that: The spacing between the elastic clip (52) and the limiting piece (62) is adjustable.

9. A plating system for railway track embedded parts according to claim 8, characterized in that: The bearing piece (6) is provided with a twisting piece (61) that contacts the inner wall of the bolt sleeve, and a side piece (65) for storing force in a default state is fixedly installed at the pivot position of the bearing piece (6); The twisting piece (61) cooperates with the side piece (65) to release the torque in the direction of the arc surface of the twisting piece (61).

10. A plating system for railway track embedded parts according to claim 9, characterized in that: The oblique annular groove (73) is provided with an arc-shaped sliding groove (74) that slidably cooperates with the elastic end (64), and the sliding groove (74) has a low position and a high position for switching, and enables the twisting plate (61) to reciprocate on the axis of the bolt sleeve.

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