Novel sand-proof slide plate structure and novel turnout with same

Abstract

The invention discloses a novel sand-proof slide plate structure and a novel turnout with the same. The novel sand-proof slide plate structure comprises a mounting bottom plate for mounting and supporting, a slide table fixed on the mounting bottom plate, a plurality of balls arranged at the top end of the slide table in a rolling manner, and a slide block arranged at the top end of the slide table in a sliding manner. The sliding block is arranged in a sliding mode in the direction that the switch rail slides into and slides out of the sliding bed table, the sliding block is used for being tightly sucked and fixed to the rail bottom face of the switch rail when the switch rail slides into the sliding bed table, and the sliding block is further used for being matched with the balls to support the switch rail. According to the slide plate structure, friction and contact resistance between the switch rail and the slide plate can be greatly reduced, abrasion of the surfaces of the switch rail and the slide plate is reduced, the service life of the slide plate is prolonged, smoothness and stability of the rail are not affected, meanwhile, the replacement or repair frequency of the slide plate is greatly reduced, and the operation cost is reduced; and the interference of noise generated by friction to the surrounding environment is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit technology, in particular, to a new sand-proof sliding bed plate structure. In addition, the present application also relates to a new turnout including the above-mentioned new sand-proof sliding bed plate structure. BACKGROUND

[0002] The sliding bed plate is a part of the turnout, mainly used for supporting the point rail and allowing it to slide, which enables the train to smoothly turn from one track to another.

[0003] The sliding bed plate is usually made of metal materials such as manganese steel or aluminum alloy, which have high strength and durability to withstand the weight and pressure of the train wheel hub. However, with the development of railway transportation, the speed and load of trains are increasing, and the requirements for turnout sliding bed plates are also increasing. Due to the complex and variable environment of the site, the wear of the sliding bed plate is much larger than that of other pads, and its service life is far from that of normal pads. Today, the research and development of sand-proof sliding bed plates is still in its infancy, and a complete design concept and structure method have not yet been established to extend its service life in sandy areas.

[0004] The existing sliding bed plate is frequently used, which leads to surface wear, affecting the smoothness and stability of the track, and needs to be replaced or repaired regularly, increasing the operating cost, and the noise generated by friction may interfere with the surrounding environment; with the increase of train speed and load, the service life is limited, and performance problems may occur under different weather conditions; the point rail may not be pulled into place due to wind sand invasion, leading to train accidents, and the turnout machine may not operate normally due to wind sand falling on the sliding bed platform, and the overall pad replacement problem may also occur due to severe wear of the sliding bed platform.

[0005] The existing patent CN115387166A is a railway turnout sand-proof sliding bed plate device, which has a complex structure, high processing difficulty, high maintenance difficulty, and high installation precision requirement.

[0006] The existing patent CN204475066U is a snow and sand prevention device and a turnout with the device, which has high processing cost and great processing and installation difficulty when the sand-proof function is needed. SUMMARY

[0007] The application provides a novel sandproof sliding bed plate structure and a novel turnout with the same, to solve the technical problems of the existing sliding bed plate structure, such as frequent use leading to surface wear, affecting track smoothness and stability, and needing to be replaced or repaired regularly, increasing operation cost, noise generated by friction possibly causing disturbance to the surrounding environment, easy train accidents caused by the failure of the point rail to be pulled into place due to wind sand invasion, abnormal operation of the switch machine caused by the falling of wind sand and sundries on the sliding bed platform, and the replacement of the overall pad plate caused by the serious wear of the sliding bed platform.

[0008] The technical scheme adopted by the application is as follows:

[0009] The novel sandproof sliding bed plate structure comprises a mounting bottom plate serving as a mounting and supporting role, a sliding bed platform fixed to the mounting bottom plate, a plurality of rolling balls rolling arranged at the top end of the sliding bed platform, and a sliding block sliding arranged at the top end of the sliding bed platform.

[0010] Further, a plurality of mounting grooves recessed and in a hemispherical shape are arranged on the upper surface of the sliding bed platform, and a storage groove is formed by recessing the groove bottom of the mounting grooves; the plurality of rolling balls are rolling arranged in the plurality of mounting grooves; and the storage groove contains lubricating oil to lubricate the rolling balls arranged in the mounting grooves.

[0011] Further, a plurality of sand discharge grooves are arranged on the upper surface of the sliding bed platform, and the plurality of sand discharge grooves are arranged in a longitudinal and transverse staggered manner and are recessed; the plurality of sand discharge grooves are arranged to avoid the mounting grooves, so as to discharge the sand and dust falling on the sliding bed platform outward through the sand discharge grooves.

[0012] Further, the plurality of sand discharge grooves are arranged in a longitudinal direction of the sliding bed platform and extend in a transverse direction of the sliding bed platform to form a longitudinal sand discharge groove, and the groove bottom surface of the longitudinal sand discharge groove gradually declines from the tongue end to the tail end of the sliding bed platform; the remaining plurality of sand discharge grooves are arranged in the length direction of the sliding bed platform and extend in the width direction of the sliding bed platform to form a transverse sand discharge groove, and the groove bottom surface of the transverse sand discharge groove gradually declines from the center of the sliding bed platform to both sides.

[0013] Further, the tail end surface of the sliding bed platform in the length direction is provided with a sliding cavity extending inwards, the cavity top of the sliding cavity extends upwards through the upper surface of the sliding bed platform to form a mounting port; the sliding block is sliding arranged in the sliding cavity, and the top end of the sliding block extends out of the mounting port to cooperate with the rolling balls to support the point rail; the novel sandproof sliding bed plate structure further comprises two pieces of expansion and contraction sealing sheets arranged in the mounting port and arranged on both sides of the sliding direction of the sliding block, the expansion and contraction sealing sheets are arranged in the sliding direction of the sliding block, and the two pieces of expansion and contraction sealing sheets are respectively connected to the sliding bed platform and the sliding block to seal the mounting port.

[0014] Further, the sliding block is a composite dovetail block, comprising a trapezoidal part with a trapezoidal cross section, and an upper supporting part and a lower inserting part with a square cross section connected to the upper and lower ends of the trapezoidal part; the sliding cavity is a composite dovetail cavity matched with the sliding block; the sliding table further comprises two extension inclined surfaces respectively formed by cutting the two side inclined surfaces of the trapezoidal part, and two upper inclined surfaces respectively parallel to and spaced from the two extension inclined surfaces; the extension inclined surface and the corresponding side inclined surface of the trapezoidal part form an integral lower inclined surface, and the gap between the lower inclined surface and the upper inclined surface forms a sand discharge chute, and the upper and lower sides of the inclined extension of the sand discharge chute respectively penetrate the upper surface and the side end surface of the sliding table, so as to guide the sand and dust falling on the sliding table outwards.

[0015] Further, the bottom of the composite dovetail cavity extends downwards and penetrates the sliding table to extend into the mounting bottom plate, so that the mounting bottom plate forms a bottom plate groove for guiding the sliding of the sliding block; the bottom plate groove is provided with lubricating grease for lubrication, the lower inserting part of the composite dovetail block is slidingly supported in the bottom plate groove, and the upper supporting part of the composite dovetail block extends out of the mounting port and is 1-2 mm higher than the top of the ball.

[0016] Further, the sliding table comprises a tongue pressing part and a fixed part divided along the length direction, and a flexible connecting part sealingly wrapping and flexibly connecting the tongue pressing part and the fixed part, and the fixed part is fixed on the mounting bottom plate, and the tongue pressing part is arranged on the mounting bottom plate to press the base rail from one side; the novel sand-proof sliding bed plate structure further comprises a lifting driving mechanism arranged in the sliding table, a sliding driving mechanism, and a control device connecting the lifting driving mechanism and the sliding driving mechanism, the lifting driving mechanism is used to drive the tongue pressing part to move up and down relative to the fixed part, and the sliding driving mechanism is used to drive the tongue pressing part to slide forward and backward relative to the fixed part to adjust the position of the tongue pressing part pressing the base rail.

[0017] Further, the sliding driving mechanism comprises a lifting rack arranged on the end surface of the tongue pressing part, a first driving motor fixed in the fixed part, and a driving gear fixed on the output shaft of the first driving motor, the first driving motor is connected to the control device, and the driving gear is externally meshed and connected with the lifting rack; the sliding driving mechanism comprises a second driving motor fixed in the fixed part, and a crank slider member, the second driving motor is connected to the control device, the power input end of the crank slider member is connected to the second driving motor, and the power output end of the crank slider member is hinged to the tongue pressing part.

[0018] According to another aspect of the present application, a novel turnout is also provided, which has the novel sand-proof sliding bed plate structure according to any one of the above.

[0019] The present application has the following beneficial effects:

[0020] The novel sandproof sliding bed plate structure of the present application is characterized in that the top of the sliding bed platform is provided with cooperating rolling balls and sliding blocks, when the point rail enters, it is supported on the rolling balls and sliding blocks, when the point rail slides relative to the sliding bed platform, because of the rolling arrangement of the rolling balls, the rolling friction is formed between the rail bottom surface of the point rail and the rolling balls, and the sliding blocks are tightly contacted with the rail bottom surface of the point rail, and the sliding blocks are arranged to slide in the direction of sliding of the point rail into and out of the sliding bed platform, so that the sliding blocks are synchronously moved with the point rail in the sliding process of the point rail, and there is no mutual friction between the point rail and the sliding blocks, the sliding blocks are only used to support the point rail to reduce the bearing capacity of the rolling balls, so that only the rolling friction exists between the point rail and the sliding bed platform, and the rolling friction is much less than the plane sliding friction, so that the friction between the point rail and the sliding bed plate can be greatly reduced, the wear of the surface of the point rail and the sliding bed plate is reduced, and the service life of the sliding bed plate is improved, and the smoothness and stability of the track are not affected, the replacement or repair frequency of the sliding bed plate is greatly reduced, the operation cost is reduced, and the noise caused by the friction does not disturb the surrounding environment; on the other hand, because the sliding bed plate is in rolling contact with the point rail through the rolling balls at the top end of the sliding bed plate, and the rolling balls are not easy to accumulate dust due to the special structure, so in the windy and sandy area, the sliding bed plate of the present application is not easy to cause the point rail to be out of position due to the invasion of wind and sand, and the problem of abnormal operation of the switch machine due to the falling of wind and sand on the sliding bed platform.

[0021] In addition to the objects, features, and advantages described above, the present application has other objects, features, and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate preferred embodiments of the present application, and assist in the explanation of the present application. In the drawings:

[0023] Figure 1 is a working state schematic diagram of the novel sandproof sliding bed plate structure of the preferred embodiment of the present application;

[0024] Figure 2 is a schematic diagram of the novel sandproof sliding bed plate structure of the preferred embodiment of the present application;

[0025] Figure 3 is Figure 2 is a schematic diagram of the novel sandproof sliding bed plate structure of the preferred embodiment of the present application;

[0026] Figure 4 is Figure 3 is a right view schematic diagram of the preferred embodiment of the present application;

[0027] Figure 5 is Figure 2 is a front view schematic diagram of the preferred embodiment of the present application;

[0028] Figure 6 is the internal structure diagram of the novel sand-proof type slide bed plate structure of the preferred embodiment of the present application;

[0029] Figure 7 is Figure 2 the main view structure diagram of the sliding block.

[0030] Legend:

[0031] 1, mounting bottom plate; 101, bottom plate groove;

[0032] 2, slide bed; 201, mounting groove; 202, oil storage groove; 203, longitudinal sand ditch; 204, transverse sand ditch; 205, sliding cavity; 207, extension inclined surface; 208, upper inclined surface; 209, sand discharge chute; 21, tongue pressing part; 22, fixed part; 23, flexible connecting part; 24, end plate;

[0033] 3, ball bearing;

[0034] 4, sliding block; 41, trapezoidal part; 42, upper support part; 43, lower insertion part;

[0035] 5, pointed rail;

[0036] 6, telescopic sealing piece;

[0037] 7, lifting driving mechanism; 71, lifting rack; 72, first driving motor; 73, driving gear;

[0038] 8, sliding driving mechanism; 81, crank block; 82, first connecting rod; 83, second connecting rod;

[0039] 9, basic rail. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered below.

[0041] With reference to Figure 1 and Figure 2 , the preferred embodiment of the present application provides a novel sand-proof type slide bed plate structure, comprising: a mounting bottom plate 1 serving as a mounting support, a slide bed 2 fixed on the mounting bottom plate 1, a plurality of ball bearings 3 arranged in rolling manner on the top end of the slide bed 2, and a sliding block 4 arranged in sliding manner on the top end of the slide bed 2. The sliding block 4 is arranged in sliding manner along the direction in which the pointed rail 5 slides into and out of the slide bed 2, the sliding block 4 is used to be tightly fixed with the rail bottom surface of the pointed rail 5 when the pointed rail 5 slides into the slide bed 2, and the sliding block 4 is also used to cooperate with the plurality of ball bearings 3 to support the pointed rail 5.

[0042] The novel sandproof slide bed plate structure of the present application is characterized in that the top of the slide bed platform 2 is provided with cooperating rolling balls 3 and sliding blocks 4, when the point rail 5 enters, it is supported on the rolling balls 3 and the sliding blocks 4, when the point rail 5 slides relative to the slide bed platform 2, because of the rolling arrangement of the rolling balls 3, the rolling friction exists between the rail bottom surface of the point rail 5 and the rolling balls 3, while the sliding blocks 4 tightly suck the rail bottom surface of the point rail 5, and the sliding blocks 4 are arranged to slide in the direction of sliding the point rail 5 into and out of the slide bed platform 2, so that the sliding blocks 4 are synchronously moved by the point rail 5 in the sliding process, and there is no mutual friction between the point rail 5 and the sliding blocks 4, the sliding blocks 4 are only used to support the point rail 5 to reduce the bearing capacity of the rolling balls 3, so that only the rolling friction exists between the point rail 5 and the slide bed platform 2, and the rolling friction is much less than the plane sliding friction, so that the friction and the contact resistance between the point rail 5 and the slide bed plate can be greatly reduced, the wear of the surface of the point rail 5 and the slide bed plate is reduced, the service life of the slide bed plate is improved, and the smoothness and stability of the track are not affected, at the same time, the replacement or repair frequency of the slide bed plate is greatly reduced, the operation cost is reduced, and the noise caused by the friction does not disturb the surrounding environment; on the other hand, because the slide bed plate is in rolling contact with the point rail 5 through the rolling balls 3 at the top end of the slide bed plate, and the rolling balls 3 are not easy to accumulate dust due to the special structure, so in the windy and sandy area, the slide bed plate of the present application is not easy to cause the point rail 5 to be not pulled into place due to the invasion of wind and sand, and the switch machine is not easy to cause abnormal operation due to the falling of wind and sand on the slide bed platform.

[0043] Optionally, as Figure 2 and Figure 5As shown, the upper surface of the sliding bed platform 2 is provided with a plurality of semi-spherical mounting grooves 201 recessed thereon, and the groove bottoms of the mounting grooves 201 are recessed to form oil storage grooves 202. A plurality of balls 3 are rollingly arranged in the mounting grooves 201. The oil storage grooves 202 are filled with lubricating oil to lubricate the balls 3 arranged in the mounting grooves 201. In this optional solution, the mounting grooves 201 are semi-spherical, which on the one hand facilitates the stable arrangement of the balls 3 in the mounting grooves 201 to prevent the balls 3 from being forced outwards, and on the other hand facilitates the disassembly of the balls 3 from the mounting grooves 201 under the action of external force, so as to facilitate the installation and replacement of the balls 3. In other embodiments, the mounting grooves 201 can also be smaller than semi-spherical, and the upper surface of the sliding bed platform 2 is fixed with a limiting plate, and a plurality of limiting holes are formed in the limiting plate; during installation, the balls 3 are arranged in the mounting grooves 201 and extend outwards through the limiting holes, which can stably limit the balls 3 and quickly install or disassemble the balls 3 by disassembling the limiting plate. In the present application, the balls 3 are easily disassembled and installed, so that the sliding bed plate structure is simple and has good replaceability, and the wearing part balls 3 of the device are also easily replaced parts, which have low manufacturing and processing difficulty and precision requirement, are suitable for use in harsh environments, can effectively reduce replacement cost, and in addition, the number of balls 3 in the sliding bed plate structure can be set according to actual use scenarios, which can be increased or decreased, thereby improving the flexibility of the device.

[0044] Preferably, as Figure 2 shown, the inner wall of the mounting groove 201 is smooth to reduce friction with the ball 3, and the ball 3 is also made of high-strength wear-resistant material; during work, the ball 3 and the mounting groove 201 also need to be coated with lubricating oil to reduce frictional resistance, and the bottom of the mounting groove 201 is provided with an oil storage groove 202, which can continuously provide lubricating oil for the matching structure and clean the dust attached to the ball 3, and only the oil storage groove 202 needs to be cleaned during cleaning and maintenance to restore the function.

[0045] Preferably, as Figure 2 and Figure 3 shown, the upper surface of the sliding bed platform 2 is also provided with a plurality of longitudinally and transversely arranged and recessed sand discharge grooves. The plurality of sand discharge grooves avoid the mounting grooves 201 to discharge the sand and dust falling on the sliding bed platform 2 outward through the sand discharge grooves, reduce the sand and dust entering the mounting grooves 201, and reduce the influence of the sand and dust on the pointed rail 5.

[0046] In this preferred solution, as Figure 3As shown in the drawings, the plurality of sand discharge grooves are arranged along the width direction of the slide bed platform 2 and extend along the length direction of the slide bed platform 2 to form longitudinal sand discharge grooves 203, and the bottom surface of the longitudinal sand discharge grooves 203 gradually slopes downward from the tongue end to the tail end of the slide bed platform 2. The remaining plurality of sand discharge grooves are arranged along the length direction of the slide bed platform 2 and extend along the width direction of the slide bed platform 2 to form transverse sand discharge grooves 204, and the bottom surface of the transverse sand discharge grooves 204 gradually slopes downward from the center of the slide bed platform 2 to both sides.

[0047] Optionally, as shown in the drawings, Figure 3 The tail end surface of the slide bed platform 2 in the length direction is provided with a concave extending sliding cavity 205, and the cavity top of the sliding cavity 205 extends upward through the upper surface of the slide bed platform 2 to form a mounting port. The sliding block 4 is slidingly arranged in the sliding cavity 205, and the top end of the sliding block 4 extends out of the mounting port to cooperate with the ball 3 to support the pointed rail 5. The novel sand-proof slide bed plate structure further comprises two elastic sealing pieces 6 arranged in the mounting port and arranged on both sides of the sliding direction of the sliding block 4, and the elastic sealing piece 6 is arranged in the sliding direction of the sliding block 4, and the two elastic sealing pieces 6 are respectively connected with the slide bed platform 2 and the sliding block 4 to seal the mounting port.

[0048] Preferably, as shown in the drawings, Figure 2 and Figure 3 The elastic sealing piece 6 is made of soft material, and is connected with the sliding block 4 by fastening connection, which can be detached but cannot leave a gap, so as to prevent sand and dust from entering, and the front and rear ends of the elastic sealing piece 6 extend to the starting point and the ending point of the movement of the sliding block 4, so as to fully cover the movement area of the sliding block 4. Further, as shown in the drawings, Figure 2 The slide bed platform 2 further comprises an end plate 24 for sealing the tail end surface thereof, and the connection between the end plate 24 and the slide bed platform 2 includes but is not limited to bolt connection, welding, strong magnetic adsorption and the like. After the end plate 24 is fixed with the slide bed platform 2, the sliding cavity 205 is in a closed structure to avoid being affected by wind and sand.

[0049] In this optional scheme, as shown in the drawings, Figure 3 and Figure 7 The sliding block 4 is a composite dovetail block, which comprises a trapezoidal part 41 with a trapezoidal cross section, and an upper support part 42 and a lower insertion part 43 connected to the upper and lower ends of the trapezoidal part 41 and having a square cross section. The sliding cavity 205 is a composite dovetail cavity matched with the sliding block 4. The slide bed platform 2 further comprises two extension inclined surfaces 207 formed by cutting the two side inclined surfaces of the trapezoidal part 41, and two upper inclined surfaces 208 arranged in parallel with the two extension inclined surfaces 207 and spaced apart. The extension inclined surface 207 connects the corresponding side inclined surface of the trapezoidal part 41 to form an integral lower inclined surface, and the gap between the lower inclined surface and the upper inclined surface 208 forms a sand discharge chute 209, and the upper and lower sides of the inclined extension of the sand discharge chute 209 respectively penetrate the upper surface and the side end surface of the slide bed platform 2, so as to guide the sand and dust falling on the slide bed platform 2 outwards.

[0050] In this optional solution, the extension slope 207 is formed by cutting along the side slope of the trapezoidal part 41, and the extension slope 207 connects the corresponding side slope to form an integral lower slope, so as to avoid the blockage of sundries between the composite dovetail block and the composite dovetail cavity due to inconsistent slopes, and the contact part of the composite dovetail block and the composite dovetail groove is a smooth structure, and the contact surface is coated with lubricating grease for lubrication; the upper and lower ends of the sand discharge chute 209 respectively penetrate the upper surface and the two side surfaces of the sliding bed table 2, but not the front and rear directions, and the front and rear direction lengths are consistent with the moving displacement of the sliding block 4.

[0051] Preferably, as shown in Figure 3 and Figure 4 , the cavity bottom of the composite dovetail cavity extends downward and penetrates the sliding bed table 2 to extend into the mounting bottom plate 1, so as to form a bottom plate groove 101 on the mounting bottom plate 1 for guiding the sliding of the sliding block 4. The bottom plate groove 101 is provided with lubricating grease for lubrication, the lower plug-in part 43 of the composite dovetail block is slidingly supported in the bottom plate groove 101, and the upper support part 42 of the composite dovetail block protrudes from the mounting port and is higher than the top of the ball 3 by 1-2 mm. In actual design, the depth of the bottom plate groove 101 is slightly smaller than the height of the lower plug-in part 43 protruding from the bottom end of the sliding bed table 2, so that the sliding block 4 is directly supported on the mounting bottom plate 1, and the sliding bed table 2 only limits and guides the sliding of the sliding block 4, thereby reducing the load force borne by the sliding bed table 2, and avoiding the entry of sand and dust into the composite dovetail cavity to affect the sliding of the sliding block 4, thereby reducing the wear of the sliding block 4 and the sliding bed table 2; at the same time, the upper support part 42 of the composite dovetail block protrudes from the mounting port and is higher than the top of the ball 3 by 1-2 mm, so that the sliding block 4 mainly bears the pressure of the point rail 5, and the ball 3 assists in bearing the pressure of the point rail 5, further reducing the wear between the point rail 5 and the ball 3, and improving the service life, smoothness and stability of the work of the sliding bed table. Preferably, the bottom plate groove 101 also contains an appropriate amount of lubricating oil to ensure the lubricating performance of the sliding block 4.

[0052] Optionally, as shown in Figure 6As shown, the slide bed platform 2 comprises a tongue pressing portion 21 and a fixed portion 22 arranged along the length direction of the slide bed platform 2, and a flexible connecting portion 23 sealingly wrapping and flexibly connecting the tongue pressing portion 21 and the fixed portion 22, and the fixed portion 22 is fixed on the mounting base plate 1, and the tongue pressing portion 21 is arranged on the mounting base plate 1 for pressing the base rail 9 from one side. The novel sand-proof slide bed platform structure further comprises a lifting driving mechanism 7 arranged in the slide bed platform 2, a sliding driving mechanism 8, and a control device connecting the lifting driving mechanism 7 and the sliding driving mechanism 8, the lifting driving mechanism 7 is used for driving the tongue pressing portion 21 to move up and down relative to the fixed portion 22, and the sliding driving mechanism 8 is used for driving the tongue pressing portion 21 to slide forward and backward relative to the fixed portion 22 to adjust the position of the tongue pressing portion 21 pressing the base rail 9. In this optional solution, the tongue pressing portion 21 and the fixed portion 22 are wrapped and connected by the flexible connecting portion 23, which can not only flexibly connect the movement and lifting of the tongue pressing portion 21, but also prevent small particles such as sand and dust, moisture and the like from entering the slide bed platform 2 to damage the elements; the fixed portion 22 and the mounting base plate 1 are welded or integrally cast to ensure the strength thereof.

[0053] In this optional solution, as shown in the figure, Figure 6 The sliding driving mechanism 8 comprises a lifting rack 71 arranged on the end surface of the tongue pressing portion 21, a first driving motor 72 fixed in the fixed portion 22, and a driving gear 73 fixed on the output shaft of the first driving motor 72, the first driving motor 72 is connected to the control device, and the driving gear 73 is externally meshed and connected with the lifting rack 71. In operation, the control device controls the first driving motor 72 to start to drive the driving gear 73 to rotate, and the driving gear 73 drives the tongue pressing portion 21 to move up and down relative to the fixed portion 22 through the meshing with the lifting rack 71 to adapt to the pressing requirements of the base rail 9 of different heights.

[0054] In this optional solution, as shown in the figure, Figure 6 The sliding driving mechanism 8 comprises a second driving motor fixed in the fixed portion 22, and a crank slider member, the second driving motor is connected to the control device, the power input end of the crank slider member is connected to the second driving motor, and the power output end of the crank slider member is hinged to the tongue pressing portion 21. In this optional solution, the crank slider member comprises a crank block 81 fixedly deflected with the rotating shaft of the second driving motor, a first connecting rod 82 hingedly connected with the crank block 81 eccentrically, a second connecting rod 83 hingedly connected with the other end of the first connecting rod 82, and the free end of the second connecting rod 83 is hingedly connected with the tongue pressing portion 21. In operation, the control device drives the second driving motor to rotate the crank block 81, and the crank block 81 rotates eccentrically to drive the first connecting rod 82 and the second connecting rod 83 to move in sequence, and the second connecting rod 83 pulls the tongue pressing portion 21 to approach or move away from the fixed portion 22.

[0055] Preferably, the state of the basic rail 9 when initially laid is set as the given working state during actual design, and thereafter the adjustment of both the lifting driving mechanism 7 and the sliding driving mechanism 8 is referenced to the first laying; further, sensors (including flow monitoring, temperature detection, humidity monitoring, etc.) are arranged in the sand discharge groove, which can provide real-time feedback on the rail due to thermal expansion and contraction, and output to the control device, so as to timely adjust the lifting and movement of the tongue-pressing part 21, and ensure that the clamping pressure of the line meets the standard.

[0056] With reference to Figure 1 The preferred embodiment of the present application also provides a new type of turnout with the new sand-preventing sliding bed plate structure of any one of the above, so that in the new type of turnout of the present application, only rolling friction between the point rail 5 and the sliding bed plate 2 and the ball 3 exists, so that the friction and contact resistance between the point rail 5 and the sliding bed plate can be greatly reduced, the wear of the surface of the point rail 5 and the sliding bed plate is reduced, and the service life of the sliding bed plate is improved, without affecting the smoothness and stability of the track, while greatly reducing the replacement or repair frequency of the sliding bed plate, reducing the operating cost, and reducing the noise caused by friction to interfere with the surrounding environment; on the other hand, since the sliding bed plate is in rolling contact with the point rail 5 through the ball 3 at the top end, and the ball 3 is not easy to accumulate dust due to its special structure, so in windy and sandy areas, the sliding bed plate of the present application is not easy to cause train accidents due to wind and sand invasion, and is not easy to cause abnormal operation of the switch machine due to wind and sand falling on the sliding bed plate.

[0057] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A new type of anti-sand sliding bed structure, characterized in that: include: A mounting base plate (1) serving as a mounting support, a slide bed (2) fixed on the mounting base plate (1), a plurality of balls (3) rollingly arranged on the top of the slide bed (2), and a slider (4) slidingly arranged on the top of the slide bed (2); The slider (4) is arranged to slide along the direction in which the point rail (5) slides in and out of the slide bed (2). The slider (4) is used to be sucked and fixed to the rail bottom surface of the point rail (5) when the point rail (5) slides into the slide bed (2). The slider (4) is also used to cooperate with a plurality of balls (3) to support the point rail (5).

2. The novel anti-sand sliding bed structure according to claim 1 is characterized in that: A plurality of hemispherical mounting grooves (201) are provided on the upper surface of the slide bed (2), and the bottoms of the mounting grooves (201) are concavely processed to form oil storage grooves (202); A plurality of balls (3) are rollingly mounted in the plurality of mounting grooves (201); The oil storage tank (202) is filled with lubricating grease to lubricate the ball (3) installed in the installation groove (201).

3. The novel anti-sand sliding bed structure according to claim 1 is characterized in that: The upper surface of the slide bed (2) is also provided with a plurality of sand drainage grooves arranged in a crisscross pattern and inwardly concavely arranged; A plurality of sand discharge grooves are provided to avoid the installation grooves (201) so as to discharge sand and dust that falls onto the slide bed (2) outwards through the sand discharge grooves.

4. The novel anti-sand sliding bed structure according to claim 3 is characterized in that: A plurality of sand drainage grooves are sequentially arranged at intervals along the width direction of the slide bed (2) and extend along the length direction of the slide bed (2) to form a longitudinal sand groove (203), and the bottom surface of the longitudinal sand groove (203) gradually extends downward from the tongue end to the tail end in the length direction of the slide bed (2); The remaining plurality of sand drainage grooves are sequentially arranged at intervals along the length direction of the slide bed (2) and extend along the width direction of the slide bed (2) to form a transverse sand drainage groove (204). The bottom surface of the transverse sand drainage groove (204) extends gradually downward from the center of the width direction of the slide bed (2) to both sides.

5. The novel anti-sand sliding bed structure according to claim 1 is characterized in that: A sliding cavity (205) extending inwardly is provided on the tail end surface in the longitudinal direction of the sliding bed (2), and the top of the sliding cavity (205) extends upward through the upper surface of the sliding bed (2) to form a mounting opening; The slider (4) is slidably mounted in the sliding cavity (205), and the top end of the slider (4) extends upward from the mounting opening to cooperate with the ball bearing (3) to support the pointed rail (5); The novel anti-sand sliding bed structure further comprises two telescopic sealing sheets (6) arranged in the installation opening and arranged on both sides of the sliding direction of the slider (4); the telescopic sealing sheets (6) are arranged to be telescopic along the sliding direction of the slider (4); and the two telescopic sealing sheets (6) are also respectively connected to the sliding bed platform (2) and the slider (4) to seal the installation opening.

6. The novel anti-sand sliding bed structure according to claim 5 is characterized in that: The slider (4) is a composite dovetail block, comprising a trapezoidal portion (41) having a trapezoidal cross section, and an upper support portion (42) and a lower plug-in portion (43) connected to the upper and lower ends of the trapezoidal portion (41) and having a square cross section. The sliding cavity (205) is a composite dovetail cavity provided in cooperation with the slider (4). The slide bed (2) is further provided with two extended inclined surfaces (207) formed by cutting along the two side inclined surfaces of the trapezoidal portion (41), and two upper inclined surfaces (208) which are parallel to and spaced apart from the two extended inclined surfaces (207). The extended inclined surface (207) is connected to the side inclined surface on the corresponding side of the trapezoidal portion (41) to form an integrated lower inclined surface, and the gap between the lower inclined surface and the upper inclined surface (208) forms a sand discharge chute (209). The upper and lower sides of the sand discharge chute (209) extend obliquely and respectively penetrate the upper surface and the side end surface of the slide bed (2) to discharge sand and dust that falls on the slide bed (2) to the outside.

7. The novel anti-sand sliding bed structure according to claim 6 is characterized in that: The bottom of the composite dovetail cavity extends downward through the slide bed (2) and then extends into the mounting base plate (1), so that a base plate groove (101) for guiding the sliding block (4) is formed on the mounting base plate (1); A lubricating grease is provided in the bottom plate groove (101), and the lower plug-in portion (43) of the composite dovetail block is slidably supported in the bottom plate groove (101). The upper support portion (42) of the composite dovetail block extends out of the mounting opening and is 1 to 2 mm higher than the top of the ball (3).

8. The novel anti-sand sliding bed structure according to claim 1 is characterized in that: The slide bed (2) comprises a tongue-pressing portion (21) and a fixing portion (22) which are arranged in a divided manner along the length direction thereof, and a flexible connecting portion (23) which is sealed and flexibly connects the tongue-pressing portion (21) and the fixing portion (22). The fixing portion (22) is fixed to the mounting base plate (1), and the tongue-pressing portion (21) is supported on the mounting base plate (1) to press down the base rail (9) from one side. The novel anti-sand type slide bed structure further comprises a lifting drive mechanism (7), a sliding drive mechanism (8), and a control device connecting the lifting drive mechanism (7) and the sliding drive mechanism (8) arranged in the slide bed platform (2). The lifting drive mechanism (7) is used to drive the tongue pressing portion (21) to move up and down relative to the fixed portion (22), and the sliding drive mechanism (8) is used to drive the tongue pressing portion (21) to slide forward and backward relative to the fixed portion (22) to adjust the position of the tongue pressing portion (21) pressing the base rail (9).

9. The novel anti-sand sliding bed structure according to claim 8 is characterized in that: The sliding drive mechanism (8) comprises a lifting rack (71) arranged on the end surface of the tongue pressing portion (21), a first driving motor (72) fixed in the fixing portion (22), and a driving gear (73) fixed on the output shaft of the first driving motor (72); the first driving motor (72) is connected to the control device, and the driving gear (73) is externally meshed with the lifting rack (71); The sliding drive mechanism (8) includes a second drive motor fixed in the fixed part (22), and a crank slider component. The second drive motor is connected to the control device. The power input end of the crank slider component is connected to the second drive motor. The power output end of the crank slider component is hinged to the tongue pressing part (21).

10. A new type of turnout, characterized in that: The invention has a novel anti-sand sliding bed structure as claimed in any one of claims 1 to 9.

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