A hook-type turnout external locking device and turnout switching equipment

Abstract

The present invention belongs to the field of rail transit technology and discloses a hook-type turnout external locking device and turnout switching equipment, wherein the device includes a locking rod, a lock hook, and a baffle; the connection end of the lock hook is connected to the point rail, two baffles are fixedly attached to the two side surfaces of the lock hook, the locking rod is located between the two baffles, and the locking rod is located below the lock hook; the locking rod includes a rod body and a guide wheel assembly, the guide wheel assembly includes a guide wheel shaft, a first guide wheel, and a second guide wheel, the guide wheel shaft is fixedly connected to the rod body, one end of the guide wheel shaft extends to the outside of the top surface of the rod body and is rotatably connected to the first guide wheel, the other end of the guide wheel shaft extends to the outside of the bottom surface of the rod body and is rotatably connected to the second guide wheel, and the first guide wheel and the second guide wheel are both located between the two baffles. The locking rod of the present invention adopts a dual guide wheel structure, and the baffle is synchronously optimized according to the position of the guide wheels, which can reduce the flip angle of the lock hook, improve the self-correction ability of the lock hook, and avoid the problems of jamming and unsmooth unlocking during turnout switching.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transportation, and in particular relates to a hook-type turnout external locking device and a turnout switching device. Background Art

[0002] The turnout switching equipment includes: a switch machine, a close contact checker, an external turnout locking device and an installation device. The function of the turnout switching equipment is to switch and lock the turnout, and to supervise and inspect its position. When the train passes, the switching equipment must ensure that the movable part of the turnout is fixed in the position of opening the straight or side track. The switch machine is the actuator of the turnout switching equipment and is a driving safety device for switching the turnout. It can realize the functions of switch switching, locking and supervision. The external turnout locking device is a mechanical device that switches and directly locks the point rail to the base rail, the heart rail to the wing rail through the switch machine.

[0003] The point rail and the base rail will expand and contract under different temperature conditions, causing the point rail to telescope and creep relative to the base rail. In severe cases, the amount of creep can reach about 40mm. The creep refers to the change in the length of the point rail along its extension direction, and the position of the point rail connecting iron, pin shaft and lock hook connected to it will also change accordingly. The existing external locking device has the following problems:

[0004] 1. The locking hook's flip angle is too large, resulting in jamming and unsmooth unlocking during turnout switching.

[0005] 2. There are many types of locking rods, and there are many types of corresponding spare parts on site.

[0006] 3. When lubrication is poor, there will be a large resistance to switch conversion, and in extreme cases it may cause switch jamming.

[0007] 4. When the position of the point rail connecting iron, pin shaft and lock hook is offset a lot, conversion jamming will occur, and it may even be impossible to lock the point rail and the base rail, or the lock hook may not be unlocked. Summary of the Invention

[0008] In view of the above problems, the present invention provides a hook-type turnout external locking device and a turnout switching device, which adopt the following technical solutions:

[0009] A hook-type turnout external locking device comprises a locking rod, a locking hook and a baffle;

[0010] The connecting end of the lock hook is connected to the point rail, the two baffles are fixedly attached to the two sides of the lock hook respectively, the locking rod is located between the two baffles, and the locking rod is located below the lock hook;

[0011] The locking rod includes a rod body and a guide wheel assembly, and the guide wheel assembly includes a guide wheel shaft, a first guide wheel and a second guide wheel. The guide wheel shaft is fixedly connected to the rod body, one end of the guide wheel shaft extends to the outside of the top surface of the rod body and is rotatably connected to the first guide wheel, and the other end of the guide wheel shaft extends to the outside of the bottom surface of the rod body and is rotatably connected to the second guide wheel. The first guide wheel and the second guide wheel are both located between the two baffles.

[0012] Furthermore, the locking rod also includes a connecting rod, wherein the two rod bodies are detachably connected through the connecting rod, one end of the rod body is provided with a connecting portion, and the other end of the rod body is provided with a mounting platform, and both ends of the connecting rod are provided with mounting grooves matching the mounting platform, and each mounting platform of the rod body is connected to one of the mounting grooves of the connecting rod.

[0013] Furthermore, the cross-sectional shape of the mounting platform and the mounting groove is trapezoidal.

[0014] Furthermore, the locking rod further comprises an insulating plate tube, a first insulating pad and a second insulating pad;

[0015] The insulating plate tube is arranged between the mounting platform and the mounting groove, the first insulating pad is arranged on the side of the connecting rod facing away from the rod body, and the second insulating pad is arranged on the side of the rod body facing away from the connecting rod.

[0016] Furthermore, the mounting platform is provided with a plurality of third through holes along the length direction, the mounting groove is provided with a plurality of fourth through holes along the length direction, and each of the third through holes is provided with a corresponding fourth through hole;

[0017] The insulating plate tube includes an insulating plate body and a plurality of insulating tubes arranged on the insulating plate body, wherein one insulating tube is correspondingly arranged for each third through hole, and the insulating plate body is located between the mounting platform and the mounting groove. The bottom of each insulating tube passes through one of the third through holes, and the top passes through one of the fourth through holes.

[0018] Furthermore, the locking hook includes a hook body and a connecting end connected to the hook body, and the connecting end is connected to the point rail.

[0019] Furthermore, it also includes a locking seat, which includes a locking frame, a locking iron, a support block, a fixing bolt and a stop block;

[0020] The locking frame is arranged on the outside of the base rail, the top of the locking frame is fixedly connected to the waist of the base rail, a channel is provided in the middle of the locking frame, the channel passes through the locking frame along the width direction of the base rail, the locking iron is located at the top of the channel, one side of the fixing bolt fixes the locking iron to the locking frame, and the curved groove on the other side of the fixing bolt is clamped in the bottom end surface of the base rail; the hook body is movably arranged in the channel and is located below the locking iron, the rod body is passed through the channel, and the rod body is located below the hook body;

[0021] The support block is arranged on a side of the bottom of the locking frame away from the basic rail, the stop block is arranged on a side of the bottom of the locking frame close to the basic rail, and the support block is fixedly connected to the stop block; the top of the support block is provided with a first slide groove connected to the channel, and the top of the stop block is provided with a second slide groove connected to the channel, and the rod body slides in the first slide groove, the channel and the second slide groove.

[0022] Furthermore, a slide is provided in the first slide groove, the slide extends into the channel, the lower surface of the rod body slides on the upper surface of the slide, the upper surface of the slide is provided with multiple blind holes, and each blind hole is embedded with a self-lubricating gasket.

[0023] Furthermore, the rod body is provided with grooves on both sides of one end of the connecting portion, and bosses matching the grooves are provided on both sides of the inner wall surface of the first sliding groove, and the bosses are slidably connected to the grooves.

[0024] The present invention also provides a turnout switching device, comprising the hook-type turnout external locking device.

[0025] Beneficial effects of the present invention:

[0026] 1. The locking rod of the present invention adopts an upper and lower double guide wheel structure (first guide wheel and second guide wheel), which can synchronously optimize the baffle of the lock hook according to the position of the guide wheel, reduce the flip angle of the lock hook, and improve the self-correction ability of the lock hook, thereby avoiding the problem of jamming and unsmooth unlocking during turnout switching caused by excessive flip angle of the lock hook.

[0027] 2. The locking rod of the present invention has a three-section connection structure. The mounting platform of the locking rod is connected in a coordinated manner with the mounting groove structure of the connecting rod, which can ensure the straightness of the locking rod connection.

[0028] 3. The locking rod of the present invention adopts a three-section connection method, which can set the locking rod as a universal part, simplifying the types of locking rods, improving the versatility of parts, and reducing the types of spare parts on site.

[0029] 4. The two locking rods of the present invention are respectively connected to the two ends of the connecting rod. The connecting rod and the two locking rods are separated by three layers of insulating pads, and the middle layer is an integrated insulation of insulating plate and tube, which is convenient for on-site assembly and improves assembly efficiency and insulation reliability.

[0030] 5. The slide table of the support block of the present invention is inlaid with self-lubricating material, which can reduce the sliding friction resistance between the support block and the locking rod and improve the wear resistance.

[0031] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A cross-sectional view of a hook-type turnout external locking device according to an embodiment of the present invention is shown;

[0034] Figure 2 A side view of a hook-type turnout external locking device according to an embodiment of the present invention is shown;

[0035] Figure 3 A schematic diagram of the installation of a bearing and a pin according to an embodiment of the present invention is shown;

[0036] Figure 4 A schematic diagram showing the connection between two rod bodies and a connecting rod according to an embodiment of the present invention is shown;

[0037] Figure 5 It shows a schematic structural diagram of a connecting rod according to an embodiment of the present invention;

[0038] Figure 6 A schematic structural diagram of a rod body according to an embodiment of the present invention is shown;

[0039] Figure 7 A schematic diagram of the installation of the insulating plate tube, the rod body, and the connecting rod according to an embodiment of the present invention is shown;

[0040] Figure 8 It shows a schematic structural diagram of an insulating plate tube according to an embodiment of the present invention;

[0041] Figure 9A schematic diagram of a position adjustment structure of a single guide wheel to a lock hook according to an embodiment of the present invention is shown;

[0042] Figure 10 A schematic diagram of a position adjustment structure of a double guide wheel for a locking hook according to an embodiment of the present invention is shown;

[0043] Figure 11 It shows a schematic structural diagram of a locking seat according to an embodiment of the present invention;

[0044] Figure 12 A schematic diagram of the installation of a locking frame, a support block, and a stop block according to an embodiment of the present invention is shown;

[0045] Figure 13 A structural schematic diagram of a support block according to an embodiment of the present invention is shown.

[0046] Figure: 1, locking rod; 2, lock hook; 3, point rail; 4, connecting iron; 5, pin; 6, baffle; 7, retaining ring; 8, bearing; 9, sealing ring; 10, screw plug; 11, hook body; 12, connecting end; 13, base rail; 14, rod body; 15, connecting rod; 16, insulating plate tube; 17, first insulating pad; 18, second insulating pad; 19, second through hole; 20, mounting platform; 21, mounting groove; 22, third through hole; 23, fourth through hole hole; 24, insulating plate body; 25, insulating tube; 26, protrusion; 27, groove; 28, guide wheel assembly; 29, guide wheel shaft; 30, first guide wheel; 31, second guide wheel; 32, fifth through hole; 33, locking frame; 34, support block; 35, locking iron; 36, fixing bolt; 37, stop block; 38, fixing part; 39, channel; 40, first slide groove; 41, second slide groove; 42, slide; 43, blind hole; 44, groove; 45, boss. DETAILED DESCRIPTION

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0048] It should be noted that the terms "first", "second" etc. in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the application described herein. In this application, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "center", "vertical", "horizontal", "lateral", "longitudinal" etc. are based on the directions or positional relationships shown in the accompanying drawings.

[0049] The present invention provides a hook-type turnout external locking device and a turnout switching device, which can reduce the flipping angle of the lock hook and improve the self-correction ability of the lock hook, thereby avoiding the problems of jamming and unsmooth unlocking during turnout switching caused by excessive flipping angle of the lock hook. The locking rods of the hook-type turnout external locking device of the present invention can be universal, which can reduce the number of parts, improve the versatility of parts, and facilitate on-site management and maintenance. By adopting self-lubricating materials, poor lubrication can be avoided, the large resistance to turnout switching can be reduced, and conversion jamming can be prevented.

[0050] like Figure 1 As shown, a hook-type turnout external locking device includes a locking rod 1, a locking hook 2, a baffle 6 and a locking seat, wherein the connecting end 12 of the locking hook 2 is connected to the point rail 3.

[0051] like Figure 2 and Figure 3 As shown, for example, the hook-type turnout external locking device further includes a bearing 8 and a pin 5, the lock hook 2 and the point rail 3 are connected via the bearing 8 and the pin 5, the connecting end 12 of the lock hook 2 is provided with a first through hole, and the connecting end 12 of the lock hook 2 is the end of the lock hook 2 for connecting to the point rail 3 or the end of the lock hook 2 for connecting to the point rail 3 through an intermediate component.

[0052] The outer ring of bearing 8 is fixed relative to the inner wall of the first through-hole, meaning the inner ring of bearing 8 can rotate relative to the inner wall of the first through-hole. Pin 5 passes through the inner ring of bearing 8 and can slide relative to it. The expansion and contraction of switch rail 3 causes pin 5 to slide relative to the inner ring of bearing 8. Specifically, the expansion and contraction of switch rail 3 causes pin 5 to move forward and backward. As pin 5 moves with switch rail 3, the position of bearing 8 remains unchanged, allowing pin 5 to slide relative to the inner ring of bearing 8.

[0053] For example, the axial direction of the pin shaft 5 may be parallel to the creeping direction of the switch rail 3 , or the axial direction of the pin shaft 5 may be parallel to the extending direction of the switch rail 3 .

[0054] like Figure 2As shown, two baffles 6 are provided, and the two baffles 6 are fixedly attached to the two side surfaces of the lock hook 2 respectively, and the locking rod 1 is located between the two baffles 6, that is, the lock hook 2 and the locking rod 1 are both located between the two baffles 6, and the locking rod 1 is located below the lock hook 2. If the lock hook 2 is displaced, the two baffles 6 will be driven to move, and then the baffle 6 will resist the locking rod 1 and stop moving, thereby realizing the limiting effect of the locking rod 1 on the baffle 6 and ensuring that the position of the lock hook 2 remains unchanged.

[0055] In the present invention, the lock hook 2 and the switch rail 3 are connected via a bearing 8 and a pin 5. The outer ring of the bearing 8 is fixedly positioned relative to the lock hook 2, and baffles 6 are provided on either side of the lock hook 2. The two baffles 6 limit the lock hook 2 and the locking rod 1, allowing the pin 5 to slide relative to the inner ring of the bearing 8 as it creeps with the switch rail 3. Thus, when the switch rail 3 is locked to the base rail 13, the axis of the first through hole of the lock hook 2 and the axis of the pin 5 are not absolutely parallel. The inner and outer rings of the bearing 8 form a certain angle, which keeps the axis of the inner ring of the bearing 8 parallel to the axis of the pin 5, ensuring that the first through hole of the lock hook 2 and the pin 5 do not become stuck.

[0056] When the point rail 3 telescopes and creeps, the position where the point rail 3 is connected to the pin 5 or the position where the point rail 3 is connected to the pin 5 through the intermediate piece will move forward and backward, and the point rail 3 drives the pin 5 to move forward and backward. When the pin 5 moves forward and backward, it will slide relative to the inner ring of the bearing 8, ensuring that the pin 5 will not drive the locking hook 2 to move, so that the locking hook 2 is always located above the locking rod 1, thereby avoiding the occurrence of jamming when the hook-type turnout external locking device locks the point rail 3 and the base rail 13, and at the same time avoiding the occurrence of the situation where the point rail 3 and the base rail 13 cannot be locked or the unlocking is not smooth after locking.

[0057] For example, the bearing 8 may be a spherical plain bearing 8. When the axis of the first through hole of the locking hook 2 is not completely parallel to the axis of the pin 5, a certain angle is created between the inner race and the outer race of the bearing 8 to ensure that the axis of the inner race of the bearing 8 remains parallel to the axis of the pin 5, and that the first through hole of the locking hook 2 and the pin 5 do not become stuck. Of course, the bearing 8 may also be a deep groove ball bearing 8 or other ordinary bearing 8, and this is not limited here.

[0058] For example, the outer ring of the bearing 8 and the inner wall of the first through hole may be interference fit. Of course, the outer ring of the bearing 8 and the inner wall of the first through hole may also be clamped or welded to each other, which is not limited here.

[0059] like Figure 2 and Figure 3As shown, for example, to prevent the bearing 8 from shifting within the first through-hole, two retaining rings 7 are fixedly disposed within the first through-hole of the locking hook 2, with the two retaining rings 7 respectively abutting against the outer ring of the bearing 8 on either side. Thus, the outer ring of the bearing 8 is abutted by retaining rings 7 on both sides, and the retaining rings 7 are fixedly connected to the inner wall of the first through-hole, preventing the bearing 8 from shifting. Furthermore, the retaining rings 7 and the inner wall of the first through-hole can be interference fit, or alternatively, threaded or clipped, without limitation herein.

[0060] like Figure 2 and Figure 3 As shown, for example, in order to prevent dust and oil from entering the first through hole, a sealing ring 9 is further provided between the retaining ring 7 and the pin 5. The outer side of the sealing ring 9 abuts against the retaining ring 7, and the inner side of the sealing ring 9 abuts against the pin 5. The sealing ring 9 is fixedly connected to the retaining ring 7, and the pin 5 can slide relative to the sealing ring 9. In this way, dust and oil will no longer enter the interior of the first through hole through the gap between the retaining ring 7 and the pin 5, thereby avoiding severe wear of the bearing 8 and extending the service life of the bearing 8.

[0061] For example, the two baffles 6 and the lock hook 2 can be fixedly connected by bolts, or can be welded. The baffles 6 can also be fixedly connected together with other supporting members by bolts, so as to support the baffles 6 and the lock hook 2.

[0062] The baffle 6 can be a metal plate to ensure the strength of the baffle 6. Of course, the baffle 6 can also be made of other materials, such as wood, which is not limited here.

[0063] like Figure 1 As shown, for example, the lock hook 2 includes a hook body 11 and a connecting end 12 connected to the hook body 11. The connecting end 12 can be connected to the switch rail 3 via an intermediate component or directly. The hook body 11 is arranged horizontally, and the connecting end 12 can be arranged vertically. The first through hole can be located above the connecting end 12 to facilitate the connection of the pin 5. Of course, the first through hole can also be located in the middle of the connecting end 12, which is not limited here. The baffle 6 only contacts the side of the connecting end 12.

[0064] like Figure 1 As shown, for example, to facilitate the connection between the pin 5 and the switch rail 3, the hook-type turnout external locking device further includes a connecting iron 4 fixedly connected to the switch rail 3. The pin 5 passes through the connecting iron 4 and is hinged thereto, and the connecting iron 4 can drive the pin 5 to slide in a direction parallel to the creeping direction of the switch rail 3. In other words, the pin 5 can rotate relative to the connecting iron 4. When the switch rail 3 creeps, the position of the connecting iron 4 moves along with the switch rail 3, and the connecting iron 4 then drives the pin 5 to move.

[0065] For example, the pin 5 can also be fixedly connected to the connecting iron 4. In this way, when the switch rail 3 creeps, the position of the connecting iron 4 will move with the switch rail 3, and then the connecting iron 4 drives the pin 5 to move. The pin 5 and the connecting iron 4 can be welded to each other or connected by bolts, which is not limited here.

[0066] For example, to facilitate the injection of lubricating oil into the first through hole to reduce friction on the bearing 8, a guide hole communicating with the first through hole is provided on the upper wall of the lock hook 2. One end of the guide hole located on the upper wall of the lock hook 2 can be blocked by a screw plug 10. Thus, when lubricating oil needs to be injected, the screw plug 10 can be removed, and the lubricating oil can be injected into the first through hole through the guide hole. After injection, the screw plug 10 can be closed.

[0067] like Figure 4 and Figure 7 As shown, for example, the locking rod 1 includes a rod body 14, a connecting rod 15, an insulating plate tube 16, a first insulating pad 17 and a second insulating pad 18. The two rod bodies 14 are detachably connected by the connecting rod 15. A connecting portion is provided at one end of the rod body 14. The rod body 14 is connected to the switch machine through the connecting portion. For example, the connecting portion is arc-shaped and a second through hole 19 is provided on the connecting portion.

[0068] like Figure 6 As shown, the other end of the rod body 14 is provided with a mounting platform 20, as shown in FIG. Figure 5 As shown, both ends of the connecting rod 15 are provided with mounting grooves 21 matching the mounting platforms 20, and the mounting platforms 20 of each rod body 14 are connected to one mounting groove 21 of the connecting rod 15. For example, the cross-sectional shape of the mounting platforms 20 and the mounting grooves 21 can be set to be trapezoidal.

[0069] The locking rod 1 of the embodiment of the present invention has a three-section connection structure. The mounting platform 20 of the locking rod 1 is connected in a coordinated manner with the mounting groove 21 of the connecting rod 15 to ensure the straightness of the connection of the locking rod 1.

[0070] The insulating plate tube 16 is arranged between the mounting platform 20 and the mounting groove 21, the first insulating pad 17 is arranged on the side of the connecting rod 15 facing away from the rod body 14, and the second insulating pad 18 is arranged on the side of the rod body 14 facing away from the connecting rod 15. In this embodiment of the present invention, three layers of insulating pads are arranged between the rod body 14 and the connecting rod 15, namely, upper, middle and lower layers, and the middle layer insulating plate tube 16 is insulated as a whole, which is convenient for on-site assembly and improves assembly efficiency and insulation reliability.

[0071] For example, each rod body 14 is fixedly connected to one end of the connecting rod 15 by a plurality of bolts, for example, Figure 6 As shown, the mounting platform 20 is provided with a plurality of third through holes 22 along the length direction. Figure 5As shown, a plurality of fourth through holes 23 are provided in the mounting groove 21 along the length direction, and one fourth through hole 23 is correspondingly provided for each third through hole 22 .

[0072] like Figure 8 As shown, for example, the insulating plate tube 16 includes an insulating plate body 24 and a plurality of insulating tubes 25 arranged on the insulating plate body 24, and an insulating tube 25 is correspondingly provided for each third through hole 22. The insulating plate body 24 is located between the mounting platform 20 and the mounting groove 21. The bottom of each insulating tube 25 passes through a third through hole 22, and the top passes through a fourth through hole 23. The bolts pass through the first insulating pad 17, the insulating tube 25, the second insulating pad 18 in sequence and are threadedly connected to the nut, thereby fixing the rod body 14 and the connecting rod 15.

[0073] The two locking rods 1 of the embodiment of the present invention are respectively connected to the two ends of the connecting rod 15 by multiple bolts. The connecting rod 15 and the two locking rods 1 are separated by three layers of insulating pads, and the middle layer is an insulating plate tube 16 for integrated insulation, which is convenient for on-site assembly and improves assembly efficiency and insulation reliability.

[0074] The embodiment of the present invention is optimized based on the existing GW type external locking device, and adopts a three-section connection method, so that the locking rod 1 can be set as a universal part, simplifying the type of the locking rod 1, improving the versatility of parts, and reducing the types of spare parts on site.

[0075] like Figure 1 As shown, for example, a protrusion 26 is provided on the side of the rod body 14 facing the hook body 11 , and a groove 27 is correspondingly provided on the side of the hook body 11 facing the rod body 14 . The protrusion 26 cooperates with the groove 27 to lock or unlock the locking rod 1 .

[0076] like Figure 1 As shown, for example, the locking rod 1 further includes a guide wheel assembly 28, which is fixedly arranged on the rod body 14, as shown in FIG. Figure 4 As shown, for example, guide wheel assembly 28 is positioned between boss 26 and mounting platform 20 .

[0077] like Figure 9 As shown, for example, the guide wheel assembly 28 includes a guide wheel shaft 29 and a first guide wheel 30. The guide wheel shaft 29 is fixedly connected to the rod body 14. One end of the guide wheel shaft 29 extends to the outside of the top surface of the rod body 14 and is rotatably connected to the first guide wheel 30. In this embodiment, the guide wheel assembly 28 has a single guide wheel structure, so due to the limitation of only one first guide wheel 30, the swing angle of the lock hook 2 is relatively large.

[0078] like Figure 10As shown, for example, the guide wheel assembly 28 includes a guide wheel shaft 29, a first guide wheel 30 and a second guide wheel 31, the guide wheel shaft 29 is fixedly connected to the rod body 14, one end of the guide wheel shaft 29 extends to the outside of the top surface of the rod body 14, and is rotatably connected to the first guide wheel 30, and the other end of the guide wheel shaft 29 extends to the outside of the bottom surface of the rod body 14, and is rotatably connected to the second guide wheel 31, wherein the top surface of the rod body 14 is the side of the rod body 14 facing the lock hook 2, and the bottom surface of the rod body 14 is the side of the rod body 14 facing away from the lock hook 2, and the first guide wheel 30 and the second guide wheel 31 are both located between the two baffles 6.

[0079] like Figure 6 As shown, for example, the rod body 14 is provided with a fifth through hole 32 between the protrusion 26 and the mounting platform 20 , and the guide wheel shaft 29 is fixedly connected in the fifth through hole 32 . For example, the guide wheel shaft 29 can be interference fit with the fifth through hole 32 .

[0080] The locking rod 1 in the hook-type turnout external locking device of this embodiment of the present invention utilizes a dual upper and lower guide wheel structure (a first guide wheel 30 and a second guide wheel 31). The second guide wheel 31 of the guide wheel assembly 28 further limits the deflection angle of the baffles 6 on both sides, thereby minimizing the swing angle of the hook 2. Therefore, the dual guide wheel structure optimizes the baffles 6 of the hook 2 according to the guide wheel position, reducing the tilt angle of the hook 2 and improving its self-correction capability. This prevents excessive tilt angles of the hook 2, which can cause jamming and unsmooth unlocking during turnout switching.

[0081] like Figure 11 As shown, for example, the locking seat includes a locking frame 33, a support block 34, a locking iron 35, a fixing bolt 36 and a stopper 37, wherein Figure 1 As shown, the locking frame 33 is arranged on the outside of the stock rail 13 , and the top of the locking frame 33 is fixedly connected to the rail waist of the stock rail 13 .

[0082] like Figure 11 and Figure 12 As shown, for example, an L-shaped fixing portion 38 is provided on the top of the locking frame 33 , and a waist-shaped hole is provided on the L-shaped fixing portion 38 , through which a bolt passes to be fixedly connected to the waist of the stock rail 13 .

[0083] like Figure 12 As shown, a channel 39 is provided in the middle of the locking frame 33, and the channel 39 passes through the locking frame 33 along the width direction of the base rail 13. The locking iron 35 is located at the top of the channel 39. One side of the fixing bolt 36 fixes the locking iron 35 to the locking frame 33, and the curved groove on the other side of the fixing bolt 36 is clamped in the bottom end face of the base rail 13.

[0084] like Figure 1As shown, the hook body 11 is movably disposed in the channel 39 and is located below the locking iron 35 . The rod body 14 is passed through the channel 39 and is located below the hook body 11 .

[0085] The support block 34 is arranged on the side of the bottom of the locking frame 33 away from the base rail 13, and the stop block 37 is arranged on the side of the bottom of the locking frame 33 close to the base rail 13. The support block 34 is fixedly connected to the stop block 37, for example, the support block 34 is connected to the stop block 37 by bolts.

[0086] like Figure 12 As shown, a U-shaped first slide groove 40 connected to the channel 39 is provided on the top of the support block 34, and a U-shaped second slide groove 41 connected to the channel 39 is provided on the top of the stop block 37. The rod body 14 slides in the first slide groove 40, the channel 39 and the second slide groove 41.

[0087] like Figure 12 and Figure 13 As shown, for example, a slide 42 is provided in the first slide groove 40 of the support block 34, and the slide 42 extends into the channel 39. The upper surface of the slide 42 is flush with the bottom surface of the second slide groove 41, and the upper surface of the slide 42 contacts the lower surface of the rod body 14. The lower surface of the rod body 14 slides on the upper surface of the slide 42. A plurality of blind holes 43 are provided on the upper surface of the slide 42. For example, a plurality of blind holes 43 are arranged in an array, and a self-lubricating gasket is embedded in each blind hole 43. The self-lubricating gasket can reduce the sliding friction resistance between the slide 42 and the rod body 14, thereby improving wear resistance.

[0088] For example, self-lubricating gaskets can be made of materials such as molybdenum disulfide, graphite, graphite fluoride, or boron nitride.

[0089] like Figure 6 As shown, for example, the rod body 14 is provided with grooves 44 on both sides of one end of the connecting portion, as shown in FIG. Figure 12 and Figure 13 As shown, bosses 45 matching the grooves 44 are provided on both sides of the inner wall of the first slide groove 40. The bosses 45 are slidably connected to the grooves 44. The two bosses 45 on the inner wall of the support block 34 are inserted into the grooves 44 on both sides of the locking rod 1 to guide the movement of the locking rod 1.

[0090] Based on the hook-type turnout external locking device provided in the above-mentioned embodiments, the present invention further provides a turnout switching device, which includes any of the hook-type turnout external locking devices in the above-mentioned embodiments. Since this railway turnout switching device utilizes the hook-type turnout external locking device in the above-mentioned embodiments, the beneficial effects of this railway turnout switching device can be seen in the above-mentioned embodiments.

[0091] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hook-type turnout external locking device, characterized in that: It comprises a locking rod (1), a locking hook (2) and a baffle (6); The connecting end (12) of the lock hook (2) is connected to the point rail (3), the two baffles (6) are fixedly attached to the two side surfaces of the lock hook (2), the locking rod (1) is located between the two baffles (6), and the locking rod (1) is located below the lock hook (2); The locking rod (1) includes a rod body (14) and a guide wheel assembly (28), wherein the guide wheel assembly (28) includes a guide wheel shaft (29), a first guide wheel (30) and a second guide wheel (31), wherein the guide wheel shaft (29) is fixedly connected to the rod body (14), one end of the guide wheel shaft (29) extends to the outside of the top surface of the rod body (14) and is rotatably connected to the first guide wheel (30), and the other end of the guide wheel shaft (29) extends to the outside of the bottom surface of the rod body (14) and is rotatably connected to the second guide wheel (31), and the first guide wheel (30) and the second guide wheel (31) are both located between the two baffles (6).

2. The hook-type turnout external locking device according to claim 1, characterized in that: The locking rod (1) further comprises a connecting rod (15), wherein the two rod bodies (14) are detachably connected via the connecting rod (15), one end of the rod body (14) is provided with a connecting portion, and the other end of the rod body (14) is provided with a mounting platform (20), both ends of the connecting rod (15) are provided with mounting grooves (21) matching the mounting platform (20), and the mounting platform (20) of each rod body (14) is connected to one of the mounting grooves (21) of the connecting rod (15).

3. The hook-type turnout external locking device according to claim 2, characterized in that: The cross-sectional shapes of the mounting platform (20) and the mounting groove (21) are trapezoidal.

4. The hook-type turnout external locking device according to claim 2, characterized in that: The locking rod (1) further comprises an insulating plate tube (16), a first insulating pad (17) and a second insulating pad (18); The insulating plate tube (16) is arranged between the mounting platform (20) and the mounting groove (21), the first insulating pad (17) is arranged on the side of the connecting rod (15) facing away from the rod body (14), and the second insulating pad (18) is arranged on the side of the rod body (14) facing away from the connecting rod (15).

5. The hook-type turnout external locking device according to claim 4, characterized in that: The mounting platform (20) is provided with a plurality of third through holes (22) along the length direction, the mounting groove (21) is provided with a plurality of fourth through holes (23) along the length direction, and each of the third through holes (22) is correspondingly provided with one of the fourth through holes (23); The insulating plate tube (16) includes an insulating plate body (24) and a plurality of insulating tubes (25) arranged on the insulating plate body (24), wherein each of the third through holes (22) is provided with an insulating tube (25) correspondingly, and the insulating plate body (24) is located between the mounting platform (20) and the mounting groove (21), and the bottom of each insulating tube (25) passes through one of the third through holes (22) and the top passes through one of the fourth through holes (23).

6. The hook-type turnout external locking device according to any one of claims 2 to 5, characterized in that: The locking hook (2) comprises a hook body (11) and a connecting end (12) connected to the hook body (11), and the connecting end (12) is connected to the point rail (3).

7. The hook-type turnout external locking device according to claim 6, characterized in that: It also includes a locking seat, which includes a locking frame (33), a locking iron (35), a support block (34), a fixing bolt (36) and a stopper (37); The locking frame (33) is arranged on the outside of the basic rail (13), the top of the locking frame (33) is fixedly connected to the waist of the basic rail (13), a channel (39) is provided in the middle of the locking frame (33), the channel (39) passes through the locking frame (33) along the width direction of the basic rail (13), the locking iron (35) is located at the top of the channel (39), one side of the fixing bolt (36) fixes the locking iron (35) to the locking frame (33), and the curved groove on the other side of the fixing bolt (36) is clamped on the bottom end face of the basic rail (13); the hook body (11) is movably arranged in the channel (39) and is located below the locking iron (35); the rod body (14) is passed through the channel (39), and the rod body (14) is located below the hook body (11); The support block (34) is arranged on a side of the bottom of the locking frame (33) away from the basic rail (13), and the stop block (37) is arranged on a side of the bottom of the locking frame (33) close to the basic rail (13), and the support block (34) is fixedly connected to the stop block (37); the top of the support block (34) is provided with a first sliding groove (40) connected to the channel (39), and the top of the stop block (37) is provided with a second sliding groove (41) connected to the channel (39), and the rod body (14) slides in the first sliding groove (40), the channel (39) and the second sliding groove (41).

8. The hook-type turnout external locking device according to claim 7, characterized in that: A slide (42) is provided in the first slide groove (40), and the slide (42) extends into the channel (39). The lower surface of the rod body (14) slides on the upper surface of the slide (42). The upper surface of the slide (42) is provided with a plurality of blind holes (43), and each blind hole (43) is embedded with a self-lubricating gasket.

9. The hook-type turnout external locking device according to claim 8, characterized in that: The rod body (14) is provided with grooves (44) on both sides of one end of the connecting portion, and bosses (45) matching the grooves (44) are provided on both sides of the inner wall surface of the first sliding groove (40), and the bosses (45) are slidably connected to the grooves (44).

10. A turnout switching device, characterized in that: The invention comprises the hook-type turnout external locking device according to any one of claims 1 to 9.

Images