An Ip68 M-type electro-hydraulic switch machine

Abstract

This invention discloses an Ip68 M-type electro-hydraulic switch machine, comprising an integrated base shell, a waterproof cover plate, a waterproof vent valve, an integrated rod frame, a cylindrical actuating rod, a cylindrical locking indicator rod, a plugging plate assembly, and a plugging cover. The base shell sidewall is integrally formed with a rod frame sleeve, a double-hole sleeve, and a motor shaft sleeve. The integrated rod frame has an integrally formed hole sleeve, and the outer end face of the motor shaft sleeve is provided with a plugging plate assembly. The base shell sidewall has multiple inward and outward connecting blind holes, and the base shell with multiple blind holes is thickened. This invention improves the overall design of the switch machine base and its connections with internal and external components, significantly enhancing the switch machine's sealing and protection level. It enables continuous 24-hour normal operation even under flooding and dust conditions, raising its protection level to the highest level currently available for operational equipment to cope with extreme weather. Furthermore, this switch machine has fewer parts, a simpler structure, lower assembly difficulty, and lower cost.

Description

Technical Field

[0001] This invention relates to the field of railway turnout switch machine technology, and in particular to an Ip68 M type electro-hydraulic switch machine. Background Technology

[0002] Currently, to address issues such as water ingress into switch machines during rainy seasons and in humid southern regions, leading to corrosion of internal components and poor contact at joints due to moisture and frost, researchers have developed a sealed electro-hydraulic switch machine with a protection rating of IP67. As is known to those skilled in the art, protection ratings are typically expressed as IP followed by two digits. These digits specify the level of protection; the first digit indicates the range of dust resistance, or the degree to which people are protected in a sealed environment, representing the level of protection against solid foreign objects, with a maximum level of 6; the second digit indicates the degree of waterproofing, representing the level of protection against water ingress, with a maximum level of 8. Currently, because electro-hydraulic switch machines are dynamic structures, only a IP67 level can be achieved.

[0003] In recent years, the increase in short-duration torrential rains and other extreme weather events in my country has led to more and more urban flooding. Meanwhile, typhoon-induced downpours are increasingly impacting railway stations and ports along the coast. Low-lying areas such as bridges and tunnels are also prone to flooding exceeding 30 minutes during prolonged rainfall. These extreme conditions of prolonged immersion place higher demands on my country's railway signaling equipment, especially electro-hydraulic switch machines located in low-lying outdoor areas. Therefore, the existing IP67-rated electro-hydraulic switch machines cannot meet the current requirements and further improvements are needed to enhance their protection level. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an Ip68 M type electro-hydraulic switch machine, which improves the overall base of the switch machine and its connection with internal and external components, so that the switch machine can be safely used in flooded and dusty environments for 24 hours, raising its protection level to the highest level of currently operable equipment, and further improving the ease of installation of the switch machine, reducing the cost of the switch machine, and overcoming the shortcomings of existing electro-hydraulic switch machines.

[0005] To solve the above-mentioned technical problems, the present invention provides an Ip68 M-type electro-hydraulic switch machine, comprising an integrated base shell, a waterproof cover plate, a waterproof vent valve, an integrated rod frame, a cylindrical actuating rod, a cylindrical locking indicator rod, a plugging plate assembly, and a plugging cover. The waterproof cover plate is disposed at the upper opening of the integrated base shell via a sealing gasket. The waterproof vent valve is disposed at the ventilation hole of the integrated base shell. The side wall of the integrated base shell is integrally formed with a rod frame sleeve connected to the integrated rod frame, a double-hole sleeve connected to a double-hole sleeve assembly fitted on the cylindrical locking indicator rod, and a motor shaft sleeve for connection to a hand-cranked motor.

[0006] An annular sealing ring is provided on the end face where the integrated rod frame is connected to the rod frame sleeve. A round hole sleeve is integrally formed on the integrated rod frame. The round hole sleeve and the round hole sleeve group sleeved on the cylindrical action rod are sealed and connected by the sealing ring.

[0007] The integrated rod frame is provided with a fixing hole for fixing the cylinder connector. The cylinder connector is fixed at the fixing hole by an adjusting nut, and O-rings are provided on both the inner and outer side walls of the adjusting nut.

[0008] The outer end face of the motor bushing is provided with the plugging plate assembly. The plugging plate assembly includes a fixed hole plate and a flip cover plate movably connected thereto. The fixed hole plate is provided with a central hub at its center. The central hub is inserted into the central hole of the motor bushing, and a sealing ring is provided on the outer periphery of the central hub. The inner side of the flip cover plate is provided with a central sealing plug inserted into the interior of the central hub.

[0009] The hole cover is provided on the integrated bottom shell at the hole for connecting the flow regulating valve. A center plug is provided at the center of the inner side of the hole cover, and a radial sealing ring is provided on the outer periphery of the center plug.

[0010] The inner wall of the integrated bottom shell is provided with multiple inward connecting blind holes for connecting internal components, and the outer wall of the integrated bottom shell is provided with multiple outward connecting blind holes for connecting external components. The bottom shell with multiple inward connecting blind holes and outward connecting blind holes is thickened.

[0011] As a further improvement, the upper opening edge of the integrated bottom shell is widened, and the sealing gasket adopts an inverted U-shaped structure that is pasted on the upper opening edge of the integrated bottom shell.

[0012] As a further improvement, the top of the inverted U-shaped structure is provided with an arc-shaped protrusion.

[0013] In a further improvement, the lower steel edge of the waterproof cover is configured as a concave structure with uneven sides, and the outer side of the concave structure is longer than the inner side. An L-shaped sealing strip corresponding to the arc-shaped protrusion is fixed in the concave structure. The bent part of the L-shaped sealing strip is located below the inner side of the concave structure, and the height of the L-shaped sealing strip is greater than the maximum depth of the concave structure.

[0014] In a further improvement, the sealing ring between the circular hole sleeve and the circular hole sleeve assembly fitted on the cylindrical actuating rod includes two parts: one is an O-ring, which is located on the outer side of the contact surface, and the other is a combination sealing ring consisting of an O-ring and a square ring, which is located on the inner side of the contact surface, and the square ring is in contact with the outer circumference of the actuating rod.

[0015] In a further improvement, the inner wall of the circular hole sleeve fitted on the cylindrical actuating rod is provided with a wear-resistant guide ring and a dustproof ring, and an oil groove is provided between the wear-resistant guide ring and the dustproof ring.

[0016] As a further improvement, the central sealing plug includes multiple annular, axially arranged sealing rings.

[0017] As a further improvement, the bottom of the central sealing plug is also provided with an annular sealing gasket.

[0018] In a further improvement, the electro-hydraulic switch machine is provided with a pad for installing the motor oil pump assembly. The pad has four protrusions, each with a threaded hole. The bottom of the integrated base shell, which corresponds to the four protrusions, has four bosses, each with a blind hole.

[0019] With this design, the present invention has at least the following advantages:

[0020] 1. The Ip68 M-type electro-hydraulic switch machine of this invention has improved the overall base of the switch machine and its connection with internal and external components, which greatly enhances the sealing and protection level of the switch machine. It can continue to work normally for 24 hours under the influence of water and dust, and is not affected by water and dust. Its protection level is raised to the highest level of currently operable equipment to cope with the impact of extreme weather.

[0021] 2. Furthermore, by setting an arc-shaped protrusion on the upper part of the sealing gasket, errors caused by processing or assembly can be more effectively offset when sealing a large area between the bottom shell and the cover plate, ensuring a much better seal for the switch machine's waterproof cover plate even with only 3 locking points. At the same time, the upper edge of the bottom shell is widened, and the waterproof cover plate's sealing strip is changed from a convex shape to an L-shape. The asymmetrical concave structure of the waterproof cover plate can prevent the sealing strip from being compressed indefinitely, thereby avoiding strip cutting after long-term use.

[0022] 3. The blind hole design also improves the convenience of switch machine assembly, on-site maintenance, and edge trimming. It can prevent water from seeping into the switch machine through the threads during long-term immersion, greatly improving its waterproof and dustproof performance.

[0023] 4. Furthermore, structural improvements have reduced the number of parts without affecting the existing connections between components, greatly reducing assembly difficulty, improving the ease of installation of the switch machine, and lowering the cost of the switch machine. Attached Figure Description

[0024] The above is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a schematic diagram of the external structure of the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0026] Figure 2 This is a schematic diagram of the integrated bottom shell in the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0027] Figure 3 This is a schematic diagram of the inner structure of the integrated rod frame in the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0028] Figure 4 This is a schematic diagram of the outer structure of the integrated rod frame in the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0029] Figure 5 This is a schematic diagram of the sealing structure of the circular hole sleeve assembly, the circular hole sleeve, and the actuating rod in the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0030] Figure 6 This is a schematic diagram of the structure of the connection between the integrated rod frame and the hydraulic cylinder joint in the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0031] Figure 7 This is a schematic diagram of the plugging plate assembly in the half-open state of the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0032] Figure 8 This is a schematic diagram of the plugging plate assembly in the closed state of the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0033] Figure 9 This is a schematic cross-sectional view of the flip-top plate in the plugging plate assembly of the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0034] Figure 10 This is a schematic diagram of the plugging cover in the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0035] Figure 11 This is a partial structural cross-sectional view of the connection between the waterproof cover plate and the integrated bottom shell in the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0036] Figure 12 This is a schematic diagram of the cross-sectional structure of the sealing gasket in the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0037] Figure 13 This is a schematic diagram of the internal structure of the integrated bottom shell in the Ip68 M-type electro-hydraulic switch machine of the present invention.

[0038] Figure 14 This is a schematic diagram of the pad structure inside the integrated bottom shell of the Ip68 M-type electro-hydraulic switch machine of the present invention. Detailed Implementation

[0039] This invention, the Ip68 M-type electro-hydraulic switch machine, represents a further improvement in the waterproof and dustproof performance of existing electro-hydraulic switch machines. It enhances waterproof and dustproof capabilities in multiple ways, enabling the moving parts to achieve the Ip68 M-type level under dynamic use, which is extremely important for current practical needs such as flooding. Specific embodiments are as follows.

[0040] See attached document Figure 1 and 2 As shown, this embodiment of the Ip68 M-type electro-hydraulic switch machine includes an integrated base shell 1, a waterproof cover plate 2, a waterproof vent valve 3, an integrated rod frame 4, a cylindrical actuating rod 5, a cylindrical locking indicator rod 6, a plugging plate assembly 7, and a plugging cover 8. The cylindrical actuating rod 5 and the cylindrical locking indicator rod 6 are both actuating components extending outwards from the inner and outer sides of the integrated base shell 1. Both rods adopt existing structures, with their protruding portions from the base shell being cylindrical. The waterproof cover plate 2 is disposed at the upper opening of the integrated base shell 1 via a sealing gasket 21, and the waterproof vent valve 3 is disposed at the ventilation hole of the integrated base shell 1 to balance the internal and external air pressure of the electro-hydraulic switch machine. The side wall of the integrated base shell 1 is integrally formed with a rod frame sleeve 11 connected to the integrated rod frame 4, a double-hole sleeve 12 connected to the double-hole sleeve assembly 61 fitted on the cylindrical locking indicator rod 6, and a motor shaft sleeve 13 for connecting to a hand-cranked motor.

[0041] See attached document Figure 3 and 4 As shown, an annular sealing ring 41 is provided on the end face where the integrated rod frame 4 connects to the rod frame sleeve 11. A round hole sleeve 42 is integrally formed on the integrated rod frame 4. The round hole sleeve 42 and the round hole sleeve assembly 51 fitted on the cylindrical actuating rod 5 are sealed and connected by the sealing ring. See attached figure for details. Figure 5As shown, the sealing rings between the circular hole sleeve 42 and the circular hole sleeve assembly 51 fitted on the cylindrical actuating rod 5 include two components. One is an O-ring 43, located on the outer side of the contact surface; the other is a combined sealing ring 44, composed of an O-ring 441 and a square ring 442, located on the inner side of the contact surface, with the square ring 442 in dynamic contact with the outer circumference of the actuating rod 5. The inner wall of the circular hole sleeve assembly 51 fitted on the cylindrical actuating rod 5 is also provided with a wear-resistant guide ring 52 and a dustproof ring 53, with an oil groove 54 between the wear-resistant guide ring 52 and the dustproof ring 53. Thus, for the dynamic extension and retraction of the working rod 5, this integrated rod frame provides superior waterproof and dustproof functionality.

[0042] In this embodiment, the sealing structure of the double-hole sleeve 61 and double-hole sleeve 12 fitted on the cylindrical locking indicator rod 6 is the same as the sealing structure of the round hole sleeve 51 and round hole sleeve 42 described above, thus achieving good waterproof and dustproof functions for the cylindrical locking indicator rod 6 and the bottom shell 1.

[0043] See attached document Figure 6 As shown, the integrated rod frame 4 is provided with a fixing hole 45 for fixing the hydraulic cylinder connector, and the hydraulic cylinder connector 14 is fixed at the fixing hole 45 by an adjusting nut 15. The improvement of this embodiment is that O-rings, such as an inner O-ring 46 and an outer O-ring 47, are provided on both the inner and outer side walls of the adjusting nut 15, ensuring a sealed fixation of the hydraulic cylinder connector 14 on the integrated rod frame 4, and also allowing adjustment of the left-right installation error of the hydraulic cylinder by adjusting the adjusting nut 15.

[0044] See attached document Figure 7 and 8 As shown, the outer end face of the motor bushing 13 in this embodiment is provided with the plugging plate assembly 7. The plugging plate assembly 7 includes a fixed hole plate 71 and a flip cover plate 72 movably connected thereto. The fixed hole plate 71 has a central hub 711 at its center, which is inserted into the central hole of the motor bushing 13, and a sealing ring 712 is provided on the outer periphery of the central hub 711 to achieve a seal between the fixed hole plate 71 and the motor bushing 13.

[0045] See attached document Figure 7 and 9 As shown, the inner side of the flip cover 72 is provided with a central sealing plug 721 that is inserted into the center hub 711. The central sealing plug 721 includes a plurality of annular axially arranged sealing rings 722 and an annular sealing gasket 723 disposed at the bottom of the central sealing plug, which can further ensure the sealing performance between the flip cover 72 and the fixing hole plate 71.

[0046] Furthermore, refer to the appendix Figure 2 and 10As shown, the plug cover 8 is provided at the hole 16 on the integrated bottom shell 1 for connecting the flow regulating valve. A center plug 81 is provided at the center of the inner side of the plug cover 8, and a radial sealing ring 82 is provided on the outer periphery of the center plug 81 to achieve the sealing function at the hole 16.

[0047] Furthermore, the inner wall of the integrated base shell 1 is provided with multiple inward connecting blind holes 17 for connecting internal components, and the outer wall of the integrated base shell 1 is provided with multiple outward connecting blind holes 18 for connecting external components. Both the inner and outer connecting blind holes 17 and 18 are thickened. For example, the inward connecting blind holes 17 include blind holes for connecting five-post terminals, wire clamps, and other parts; the outward connecting blind holes 18 include blind holes for connecting the integrated frame 4, double-round-hole sleeve 61, round-hole sleeve 51, fixing hole plate 71, and plug 8. The design of these blind holes improves the convenience of switch machine assembly, on-site maintenance, and edge trimming, and prevents water from seeping into the switch machine through the threads during prolonged immersion, greatly improving waterproof and dustproof performance.

[0048] Further improvements are needed; please refer to the appendix. Figure 11 and 12 As shown, the upper opening edge 19 of the integrated bottom shell 1 is widened, which can better achieve a sealed connection between the bottom shell 1 and the waterproof cover plate 2. The sealing gasket 21 adopts an inverted U-shaped structure. This inverted U-shaped structure is attached to the upper opening edge 19 of the integrated bottom shell 1.

[0049] In a preferred embodiment, the top of the inverted U-shaped structure is provided with an arc-shaped protrusion 211. This arc-shaped protrusion 211 can increase the sealing area while preventing the upper surface of the bottom shell 1 from being scratched during production and use, thus preventing sealing failure and further improving sealing performance.

[0050] Furthermore, the lower steel edge 22 of the waterproof cover 2 is configured as a concave structure with uneven sides, and the outer side 221 of the concave structure is longer than the inner side 222. An L-shaped sealing strip 23 corresponding to the arc-shaped protrusion 211 is fixed in the concave structure. The bent part of the L-shaped sealing strip 23 is located below the inner side of the concave structure, and the height of the L-shaped sealing strip 23 is greater than the maximum depth of the concave structure. In this way, the sealing strip 23 of the waterproof cover 2 will not be compressed indefinitely. When the lower steel edge 22 of the waterproof cover 2 is pressed down, after the outer side 221 contacts the sealing gasket 21, the sealing strip 23 is not further compressed. This ensures the compression amount of the sealing strip while preventing excessive compression, thereby avoiding strip cutting after long-term use in the field.

[0051] Also, see attached Figure 13 and 14As shown, the electro-hydraulic switch machine has a pad 9 for mounting the motor oil pump assembly inside. The pad 9 has four protrusions 91, and each of the four protrusions 91 has a threaded hole 92. Corresponding to the four protrusions 91, the bottom of the integrated base shell 1 has four bosses 10, each of the four bosses 10 having a blind hole. This also prevents the bottom of the base shell 1 from having openings, avoiding water leakage into the switch machine through the threads during prolonged immersion, greatly improving its waterproof and dustproof performance.

[0052] This application, for the Ip68 M-type electro-hydraulic switch machine, involves comprehensive improvements to the switch machine base and its connections to internal and external components. These improvements significantly enhance the switch machine's sealing and protection level, enabling it to operate normally for 24 hours continuously even under flooding and dust conditions. Unaffected by water and dust, its protection level is raised to the highest level currently available for operational equipment, thus mitigating the impact of extreme weather. The structural improvements reduce the number of parts, minimizing the risk of leakage due to improper assembly or disassembly, without affecting existing component connections. This greatly simplifies assembly and on-site maintenance, improves installation convenience, and lowers the switch machine's cost.

[0053] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0054] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, or alterations made by those skilled in the art using the disclosed technical content shall fall within the protection scope of the present invention.

Claims

1. An Ip68 M type electro-hydraulic switch machine characterized in that, The utility model relates to a waterproof valve, a waterproof cover plate, a waterproof valve, an integrated rod frame, a cylindrical action rod, a cylindrical locking display rod, a hole plug plate set and a hole plug cover, the waterproof cover plate is arranged at the upper opening of the integrated bottom shell through a sealing gasket, the waterproof valve is arranged at the ventilation hole of the integrated bottom shell, the sidewall of the integrated bottom shell is integrally formed with a rod frame sleeve connected with the integrated rod frame, a double-hole sleeve connected with the double-hole sleeve set sleeved on the cylindrical locking display rod and a motor shaft sleeve for being connected with a hand motor, The end surface of the integrated rod frame connected with the rod frame sleeve is provided with an annular sealing ring, the integrated rod frame is integrally formed with a round hole sleeve, and the round hole sleeve is sealingly connected with the round hole sleeve set sleeved on the cylindrical action rod through a sealing ring. The integrated rod frame is provided with a fixing hole for fixing an oil cylinder joint, the oil cylinder joint is fixed at the fixing hole through an adjusting nut, and the inner side wall and the outer side wall of the adjusting nut are both provided with O-shaped sealing rings. The outer end surface of the motor shaft sleeve is provided with the hole plug plate set, the hole plug plate set comprises a fixed hole plate and a flip cover plate movably connected with the fixed hole plate, the center of the fixed hole plate is provided with a center hub inserted into the center hole of the motor shaft sleeve, and the outer periphery of the center hub is provided with a sealing ring, and the inner side of the flip cover plate is provided with a center sealing plug inserted into the inside of the center hub. The hole plug cover is arranged at the hole of the integrated bottom shell for connecting a flow regulating valve, the inner side center of the hole plug cover is provided with a center plug, and the outer periphery of the center plug is provided with a radial sealing ring. The inner side wall of the integrated bottom shell is provided with a plurality of inward connecting blind holes for connecting internal components, the outer side wall of the integrated bottom shell is provided with a plurality of outward connecting blind holes for connecting external components, and the bottom shells provided with the plurality of inward connecting blind holes and outward connecting blind holes are thickened. The upper opening edge of the integrated bottom shell is widened, the sealing gasket adopts an inverted U-shaped structure pasted at the upper opening edge of the integrated bottom shell, and the top of the inverted U-shaped structure is provided with an arc-shaped protrusion. The lower edge of the waterproof cover plate is provided with a concave structure with uneven sides on both sides, the outer side of the concave structure is longer than the inner side, an L-shaped sealing strip corresponding to the arc-shaped protrusion is fixed in the concave structure, the bending part of the L-shaped sealing strip is located below the inner side of the concave structure, and the height of the L-shaped sealing strip is greater than the maximum depth of the concave structure.

2. The Ip68 M-type electro-hydraulic switch machine according to claim 1, characterized in that, The sealing rings between the round hole sleeve and the round hole sleeve set sleeved on the cylindrical action rod include two, one is an O-shaped ring arranged on the outer side of the contact surface, and the other is a combined sealing ring composed of an O-shaped ring and a square ring arranged on the inner side of the contact surface, and the square ring is in dynamic contact with the outer periphery of the action rod.

3. The Ip68 M-type electro-hydraulic switch machine according to claim 2, wherein, The inner wall of the round hole sleeve set sleeved on the cylindrical action rod is provided with a wear-resistant guide ring and a dustproof ring, and an oil groove is arranged between the wear-resistant guide ring and the dustproof ring.

4. The Ip68 M-type electro-hydraulic switch machine according to claim 1, wherein, The center sealing plug comprises a plurality of annular axial sealing rings.

5. The Ip68 M-type electro-hydraulic switch machine according to claim 4, wherein, The bottom of the center sealing plug is further provided with an annular sealing gasket.

6. The Ip68 M-type electro-hydraulic switch machine according to any one of claims 1 to 5, characterized in that, The electro-hydraulic switcher is internally provided with a base plate for mounting a motor oil pump set, four protrusions are arranged on the base plate, four mounting threaded holes are respectively arranged on the four protrusions, four bosses are arranged on the bottom of the integrated bottom shell corresponding to the four protrusions, and mounting blind holes are respectively arranged on the four bosses.

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