Traction system and traction locomotive

Abstract

The present invention provides a traction system and a traction locomotive, comprising a traction device and a side bearing device. The traction device is arranged at the center of a bogie crossbeam. The traction device comprises a traction pin and a traction pin seat. The first end of the traction pin seat passes through the crossbeam and extends to the bottom of the crossbeam. The second end of the traction pin seat is arranged on the side of the crossbeam facing the frame. The first end of the traction pin is connected to the frame, and the second end of the traction pin is inserted into the traction pin seat, so that the frame and the bogie are reliably connected, the center of gravity of the locomotive is reduced, and the stability and stability of the locomotive structure are ensured. The side bearing device is arranged on the crossbeam, and the side bearing device is located on both sides of the traction device. The side bearing device contacts the frame and provides support for the frame, so that the weight of the traction locomotive is evenly distributed on each wheel, ensuring the stability and safety of the traction locomotive in curved running. The problem that the center of gravity of the existing traction locomotive is relatively high, resulting in poor stability and safety of the traction locomotive in curved running is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of locomotive traction, and in particular to a traction system and a traction locomotive. Background Art

[0002] With the continuous development of railway construction, metallurgy, mining, coal, highway tunnel construction and other industries, industrial and mining electric locomotives are the most commonly used traction and transportation equipment in the above construction sites due to their good environmental protection, high safety and carrying capacity. Industrial and mining electric locomotives are mainly used to transport construction tools and materials at the construction site, and play an increasingly important role in the auxiliary transportation work of large construction sites.

[0003] The existing industrial and mining electric locomotive adopts a two-axle structure without a bogie, and is mainly composed of a frame, a driver's cab, an electrical control system, a battery, a travel reduction mechanism, a braking system, etc. The frame adopts a frame-type welded steel structure, and the driver's cab, a battery, an electrical control system, etc. are respectively arranged on the frame. The industrial and mining electric locomotive is provided with direct current by the battery, and the direct current is converted into three-phase alternating current with adjustable voltage and frequency through a frequency converter. The alternating current drives two AC variable frequency motors to rotate, and the output shaft of the motor is connected to the input shaft of the travel reduction mechanism through a universal joint. The rotation after deceleration is transmitted to the axle through the travel reduction mechanism, thereby driving the locomotive to run. The axle is rotated to drive the industrial and mining electric locomotive to run.

[0004] However, the frame structure of the above-mentioned traction locomotive is relatively high, which makes the center of gravity of the traction locomotive relatively high and there is a problem of unstable center of gravity, resulting in poor stability and safety of the traction locomotive when running on curved sections. Summary of the invention

[0005] The present invention provides a traction system and a traction locomotive to solve the problem that the existing traction locomotive has a high center of gravity, resulting in poor running stability and safety of the traction locomotive on a curved road section.

[0006] On the one hand, the present invention provides a traction system, including a traction device and a side bearing device. The traction device is arranged at the center position of the bogie crossbeam. The traction device includes a traction pin and a traction pin seat. The first end of the traction pin seat passes through the crossbeam and extends to the bottom of the crossbeam. The second end of the traction pin seat is arranged on a side of the crossbeam facing the frame. The first end of the traction pin is connected to the frame, and the second end of the traction pin is inserted into the traction pin seat, so that the frame and the bogie are reliably connected, the center of gravity of the traction locomotive is lowered, and the stability and stability of the traction locomotive structure are ensured.

[0007] The side bearing device is arranged on the crossbeam and is located on both sides of the traction device. The side bearing device is used to contact the frame of the traction locomotive and provide support for the frame, adjust the traction locomotive to be level, and evenly distribute the weight of the locomotive to each wheel, further ensuring the stability of the locomotive. This makes the traction locomotive have better stability and safety during the curve driving process. This solves the problem that the traction locomotive has a high center of gravity in the existing locomotive, resulting in poor running stability and safety of the traction locomotive.

[0008] In a possible implementation, the traction device further includes a first sleeve and a gland;

[0009] The gland includes a connecting portion and an extending portion, wherein the connecting portion is located on the first end of the traction pin seat and connected to the traction pin seat, one end of the extending portion is connected to the connecting portion, and the other end of the extending portion extends into the traction pin seat;

[0010] The first sleeve is located in the traction pin seat, and one end of the first sleeve abuts against the bottom of the traction pin seat, the other end of the first sleeve abuts against the extension part, and the second end of the traction pin is inserted into the first sleeve.

[0011] In a possible implementation, the traction device further includes a second sleeve, and the second sleeve is sleeved on the outer periphery of the second end of the traction pin by interference fit.

[0012] In a possible implementation, the traction device further includes an elastic buffer, which is sleeved on the first sleeve, and an outer wall of the elastic buffer is in abutment contact with an inner wall of the traction pin seat.

[0013] In a possible implementation, a connecting piece is also included, and the pressure cover and the traction pin seat are detachably connected through the connecting piece.

[0014] In a possible implementation, the side bearing device includes a side bearing plate, a side bearing seat, and a roller assembly disposed in the side bearing seat;

[0015] The side bearing seat is located on the cross beam, and the roller assembly includes a first roller, which is rotatably arranged in the side bearing seat, and the axial direction of the first roller is parallel to the extension direction of the cross beam. The side bearing plate is located above the first ball and contacts and abuts the first roller, and the side bearing plate is connected to the frame.

[0016] In a possible implementation, the side bearing device further includes a side bearing outer seat and an elastic buffer pad;

[0017] The side bearing outer seat is arranged around the outer periphery of the side bearing seat, the side bearing outer seat is connected with the cross beam, the elastic buffer pad is arranged in the side bearing outer seat, and the elastic buffer pad is located between the side bearing seat and the cross beam.

[0018] In one possible implementation, the roller assembly further includes a second roller rotatably disposed in the side bearing seat, the second roller being located on both sides of the first roller, and the axial direction of the second roller being inclined with respect to the axial direction of the first roller.

[0019] In a possible implementation, the roller assembly further includes a roller seat, the roller seat is provided with a roller groove, and the first roller and the second roller are rotatably disposed in the roller groove respectively;

[0020] The roller includes a middle part and two end parts, the diameter of the end parts is smaller than the diameter of the middle part, the roller groove includes an overlapping part and a through groove part, the overlapping part is arranged on the side of the roller seat facing the side bearing plate, the through groove part runs through the thickness direction of the roller seat, the end parts are overlapped and arranged on the overlapping part, and part of the middle part is located in the through groove part.

[0021] Another aspect of the present invention provides a traction locomotive, comprising at least a frame, a bogie and any one of the bogies described above, wherein the frame and the bogie are connected via a traction system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces 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 creative labor.

[0023] Figure 1 is a structural schematic diagram of a traction locomotive provided by an embodiment of the present invention;

[0024] Figure 2 is a structural schematic diagram of a traction locomotive provided by an embodiment of the present invention from another perspective;

[0025] Figure 3 is a structural schematic diagram of a bogie provided by an embodiment of the present invention;

[0026] Figure 4 is a structural schematic diagram of a traction device provided by an embodiment of the present invention;

[0027] Figure 5 is a structural schematic diagram of a side bearing device provided by an embodiment of the present invention;

[0028] Figure 6 It is a structural schematic diagram of a side bearing device provided by an embodiment of the present invention from another perspective.

[0029] Description of reference numerals:

[0030] 1000 - traction locomotive;

[0031] 100-Bogie;

[0032] 10-traction device; 11-traction pin; 12-traction pin seat; 13-pressure cover; 14-first sleeve; 15-second sleeve; 16-elastic buffer; 17-connecting piece;

[0033] 20-side bearing device; 21-side bearing plate; 22-side bearing seat; 23-roller assembly; 231-first roller; 232-second roller; 233-roller seat; 24-side bearing outer seat; 25-elastic buffer pad; 26-adjustment plate;

[0034] 30-frame; 31-beam;

[0035] 40-basic brake device; 50-travel deceleration mechanism; 60-wheel set;

[0036] 200-frame; 300-driver's cab; 400-electronic control system; 500-new energy battery; 600-air brake system. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0038] In the construction sites of railway construction, metallurgy, forestry, mining, coal, highway tunnel construction and other fields, due to the harsh on-site environment and heavy construction materials, the requirements for transportation equipment are also high. In order to have a high carrying capacity under the premise of ensuring safety and reliability, industrial and mining electric locomotives are used. Industrial and mining electric locomotives are the most commonly used traction and transportation equipment in the above construction sites because of their good environmental protection, high safety and carrying capacity, and play an increasingly important role in the auxiliary transportation work of large construction sites.

[0039] The mining electric locomotive includes a traction locomotive, in which the traction locomotive is the power source of the entire mining electric locomotive, providing traction for the entire mining electric locomotive. The operation of the traction locomotive can drive the overall operation of the mining electric locomotive. At present, the traction locomotive often adopts a two-axle frame structure without a bogie. The frame adopts a frame-type welded steel structure. The driver's cab, inverter, battery box, air compressor, and travel reduction mechanism are respectively arranged on the frame. The inverter converts the DC power in the battery into AC power, and the AC power drives the motor to rotate. The motor transmits the reduced speed to the axle through the reduction mechanism, so that the axle rotates to drive the mining electric locomotive to run.

[0040] However, the structure of the traction locomotive in the above-mentioned industrial and mining electric locomotive is relatively high, which makes the center of gravity of the traction locomotive relatively high and has the problem of unstable center of gravity, thereby reducing the stability and safety of the traction locomotive when running on curved sections.

[0041] In addition, with the increasing demand for locomotive load, existing tracks are gradually developing towards standard-gauge tracks. However, due to the problem of high center of gravity of the above-mentioned industrial and mining electric locomotives, even when used on standard-gauge tracks, their load-bearing capacity will be restricted to avoid the unstable center of gravity affecting the running smoothness and safety, thereby reducing the applicability of the above-mentioned locomotives.

[0042] Moreover, the above-mentioned traction locomotive is of a two-axle type, so that the load-bearing capacity of a single axle is relatively large. When the load of the locomotive is increased, the axle is prone to breakage, posing a major safety hazard.

[0043] Based on the above problems, the embodiment of the present application provides a traction system and a traction locomotive, wherein the traction system includes a traction device and a side bearing device, the traction device is arranged on the crossbeam of the bogie, the side bearing devices are located on both sides of the traction device, and the side bearing devices provide support for the frame, which helps to evenly distribute the weight of the traction locomotive, ensure the load-bearing capacity and running stability of the traction locomotive, and make the traction locomotive have better stability and safety during the curve driving process. The traction pin seat of the traction device passes through the crossbeam and is fixed on the crossbeam, and the traction pin is inserted into the traction pin seat, so that the traction pin seat and the traction pin part are located below the crossbeam, which reduces the installation height of the frame, thereby reducing the center of gravity of the traction locomotive and improving the stability and stability of the traction locomotive structure.

[0044] The traction locomotive provided in the embodiment of the present application is described in detail below in conjunction with the accompanying drawings.

[0045] Figure 1 A schematic diagram of the side structure of a traction locomotive provided in an embodiment of the present application, Figure 2 A schematic diagram of the main structure of a traction locomotive provided in an embodiment of the present application.

[0046] See also Figure 1 and Figure 2 As shown, the traction locomotive 1000 includes a frame 200, a bogie 100 and a traction system, wherein the frame 200 is located on the bogie 100, and the frame 200 is connected to the bogie 100 through the traction system, so that the movement of the bogie 100 can drive the traction locomotive 1000 to move.

[0047] The bogie 100 at least includes a frame 30, a traction device 10, a side bearing device 20, a basic brake device 40, a travel speed reduction mechanism 50 and a wheelset 60. The frame 30 includes a cross beam 31 and a side beam, the side beams are located on both sides of the bogie 100, the cross beam 31 is located between the two side beams, and the extension direction of the cross beam 31 is perpendicular to the extension direction of the side beams.

[0048] In addition, two pairs of wheelsets 60 are provided on a bogie 100 . The wheelsets 60 are arranged below the side beams. The two wheelsets 60 are respectively located on both sides of the cross beam 31 , and the axles of the wheelsets 60 extend in the same direction as the cross beam 31 .

[0049] Specifically, the bogie 100 is connected to the frame 200 of the traction locomotive 1000 through the traction device 10, so that the operation of the bogie 100 can drive the traction locomotive 1000 to run, thereby driving the overall operation of the locomotive. The side bearing device 20 is arranged on the bogie 100 and is located on both sides of the traction device 10. The side bearing device 20 is used to provide further support for the frame so that the weight of the traction locomotive 1000 is evenly distributed to each wheel.

[0050] The traction locomotive 1000 may also include a new energy battery 500, which is used to provide power for the traction locomotive 1000. Specifically, the direct current in the new energy battery 500 is converted into three-phase alternating current with adjustable voltage and frequency through a frequency converter (not shown in the figure), and the alternating current drives the motor (not shown in the figure) to rotate, and the output shaft of the motor is connected to the input shaft of the travel reduction mechanism 50 through a universal joint, and the rotation after deceleration is transmitted to the axle through the output shaft of the travel reduction mechanism 50, so that the axle rotates, that is, the wheels rotate, and axle box devices (not shown in the figure) are provided at both ends of the axle, and the axle box device can convert the rotation of the wheels into the movement of the bogie 100 along the track, so that the bogie 100 runs along the track direction.

[0051] It should be understood that the traction locomotive may also include a cab 300, an electric control system 400, an air brake system 600, etc., wherein the cab 300, the electric control system 400, the air brake system 600, etc. may be arranged on the vehicle frame 200. The traction locomotive may also include other devices for realizing its functions, and the details may be referred to the prior art, which will not be described in detail in this application.

[0052] The traction system provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0053] Figure 3 A schematic structural diagram of a bogie provided in an embodiment of the present application.

[0054] The traction system provided in the embodiment of the present application, see Figure 3 As shown, the traction system includes a traction device 10 and a side bearing device 20, wherein the traction device 10 is arranged at the center of the cross beam 31 in the bogie 100, and the traction device 10 is used to connect the frame 200 and the bogie 100, so that the bogie 100 drives the frame 200 to move. The side bearing device 20 is arranged on the cross beam 31, and the side bearing device 20 is located on both sides of the traction device 10, and the side bearing device 20 is in contact with the frame 200, and is used to provide support for the frame 200.

[0055] The side bearing device 20 is in contact with the frame 200. On the one hand, it can provide further support for the frame 200, which helps to evenly distribute the weight of the traction locomotive 1000 to each wheel, so that each wheel is evenly stressed, which helps to evenly adhere to the wheel and the track, ensuring the stability and safety of the traction locomotive operation. At the same time, it helps to extend the service life of the wheel.

[0056] On the other hand, the side bearing device 20 can also effectively improve the stability and safety of the traction locomotive 1000 when traveling on a curved road section. Specifically, when the traction locomotive 1000 passes through a curved road section, such as a turning section, the frame 200 will tilt toward the inner side of the turn relative to the bogie 100 due to the centripetal force during the turning process. If the tilt angle is too large, it is easy to cause rollover. At this time, the support of the side bearing device 20 located on the inner side of the turn to the frame 200 can prevent the frame 200 from having too large a tilt angle, and avoid safety accidents caused by severe tilt of the frame 200. The stability and safety of the traction locomotive 1000 are guaranteed.

[0057] In addition, when the traction locomotive 1000 is turning, relative rotation will occur between the frame 200 and the bogie 100. At this time, relative movement will occur between the side bearing device 20 and the frame 200, thereby generating friction resistance, increasing the rotational resistance between the frame 200 and the bogie 100, and effectively suppressing the serpentine movement between the frame 200 and the bogie 100, thereby ensuring the curve passability of the traction locomotive 1000 and improving the stability and safety of the traction locomotive 1000 when traveling on curved sections.

[0058] Figure 4 A schematic structural diagram of a traction device provided in an embodiment of the present application.

[0059] See also Figure 4As shown, the traction device 10 at least includes a traction pin 11 and a traction pin seat 12, the first end of the traction pin seat 12 passes through the cross beam 31 and extends to the bottom of the cross beam 31, and the second end of the traction pin seat 12 is arranged on the side of the cross beam 31 facing the vehicle frame 200. Specifically, a mounting hole can be opened on the cross beam 31, so that the first end of the traction pin seat 12 can pass through the mounting hole, and the second end of the traction pin seat 12 cannot pass through the mounting hole, but is fixedly arranged on the cross beam 31.

[0060] The first end of the traction pin 11 is connected to the frame 200, and the second end of the traction pin 11 is inserted into the traction pin seat 12. Thus, the connection between the frame 200 and the bogie 100 is realized through the traction pin 11, and the frame 200 can be driven to move during the operation of the bogie 100, so as to realize the movement of the traction locomotive 1000.

[0061] When the vehicle frame 200 is mounted on the bogie 100, the second end of the traction pin 11 is aligned with the hole of the traction pin seat 12 and inserted, thereby realizing the connection between the vehicle frame 200 and the bogie 100. Since the first end of the traction pin seat 12 extends below the cross beam 31, part of the traction pin seat 12 is located below the cross beam 31, and the traction pin 11 is inserted into the traction pin seat 12, so that part of the traction pin 11 is also located below the cross beam 31, thereby reducing the overall installation height of the vehicle frame 200, and thus reducing the center of gravity of the traction locomotive 1000, thereby ensuring the stability and safety of the operation of the traction locomotive 1000.

[0062] In addition, since the center of gravity of the traction locomotive in the embodiment of the present application is lowered, it has better running stability and safety, so that the traction locomotive 1000 can be applied to standard gauge tracks, which helps to further improve the load-bearing capacity and traction capacity of the traction locomotive 1000.

[0063] When the bogie is used in a traction locomotive 1000, at least two bogies 100 can be arranged on one traction locomotive 1000, so that one traction locomotive 1000 has at least four pairs of wheel pairs for driving, which can further improve the load-bearing capacity and traction capacity of the traction locomotive 1000.

[0064] In addition, when installing the vehicle frame 200 and the bogie 100, it is only necessary to align and insert the second end of the traction pin 11 with the hole of the traction pin seat 12 to complete the connection between the vehicle frame 200 and the bogie 100. It has a simple structure and low cost, and is easy, quick and accurate to install, saving installation time and effectively improving work efficiency.

[0065] There are many ways to fix the traction pin seat 12 and the cross beam 31. For example, the second end of the traction pin seat 12 can be fixed to the side of the cross beam 31 facing the frame 200 by welding, so that the traction pin seat 12 and the cross beam 31 are fixedly connected.

[0066] In addition, there are many ways to connect the traction pin 11 and the frame 200. For example, the first end of the traction pin 11 can be fixed to the frame 200 by a bolt fastener, or the first end of the traction pin 11 can be welded to the frame 200 to connect the traction pin 11 and the frame 200.

[0067] Among them, the welding method can make the connection between the traction pin 11 and the frame 200 more secure, reduce the phenomenon of the traction pin 11 and the frame 200 being separated during the operation of the traction locomotive 1000, and ensure the reliability and firmness of the connection between the frame 200 and the bogie 100.

[0068] Continue to see Figure 4 As shown, the traction device 10 further includes a first sleeve 14 and a gland 13, wherein the gland 13 includes a connecting portion and an extending portion, wherein the connecting portion is located on the first end of the traction pin seat 12 and connected to the traction pin seat 12. One end of the extending portion of the gland 13 is connected to the connecting portion, and the other end extends into the traction pin seat 12.

[0069] The first sleeve 14 is located in the traction pin seat 12, and one end of the first sleeve 14 abuts against the bottom of the traction pin seat 12, and the other end abuts against the extension of the pressure cover 13. In this way, the first sleeve 14 can be limited in two directions by the traction pin seat 12 and the pressure cover 13, ensuring that the first sleeve 14 will not move along its axial direction, so that the first sleeve is fixed in the traction pin seat 12, and the second end of the traction pin 11 can be directly inserted into the first sleeve 14.

[0070] The setting of the first sleeve can effectively protect the inner wall of the traction pin seat 12, so that the inner wall of the traction pin seat 12 will not directly contact the second end of the traction pin 11, thereby preventing the inner wall of the traction pin seat 12 from directly rubbing against the traction pin 11 and avoiding friction damage to the traction pin seat 12.

[0071] After the first sleeve 14 is damaged by friction with the traction pin 11, it is only necessary to remove the gland 13 and replace the first sleeve 14. The operation is simple and quick, which reduces the workload of replacement and improves work efficiency. Moreover, compared with replacing the traction pin seat 12, the material cost and processing cost required for replacing the first sleeve 14 are lower. Using the first sleeve 14 can effectively reduce economic costs and improve economic benefits.

[0072] The gland 13 and the traction pin seat 12 are detachably connected. Figure 4As shown, the pressure cover 13 and the traction pin seat 12 can be connected by a connecting member 17, and the connecting member 17 can be a bolt fastener. A through hole is provided in the connecting portion of the pressure cover 13, and a threaded hole is provided on a side of the first end of the traction pin seat 12 facing the pressure cover 13.

[0073] The bolts are passed through the through holes of the gland 13 in sequence, extended into the threaded holes on the traction pin seat 12, and tightened with the threaded holes, so that the gland 13 can be fixed on the traction pin seat 12. In this way, when replacing the first sleeve 14, it is only necessary to remove the bolts, then the gland 13 can be removed from the traction pin seat 12, and then replace the new first sleeve 14. The operation is simple and convenient, and it is quick and accurate, which effectively improves work efficiency.

[0074] In addition, a gasket can be arranged between the bolt and the pressure cover 13. The setting of the gasket can increase the contact area between the bolt and the pressure cover 13 and reduce the pressure. It can protect the bolt and the pressure cover 13 and prevent the bolt from loosening. It can also promote the tightening effect of the bolt and ensure the firmness and reliability of the connection between the pressure cover 13 and the traction pin seat 12.

[0075] Continue to see Figure 4 As shown, the traction device 10 further includes a second sleeve 15, which is sleeved on the second end of the traction pin 11. There are many ways to connect the second sleeve 15 and the second end of the traction pin 11, such as the second sleeve 15 can be connected to the second end of the traction pin 11 by a method of injecting a fixing glue after clearance fit, or the two can also be connected by a method of a screw fastener.

[0076] Alternatively, the second sleeve 15 and the second end of the traction pin 11 can also be connected to each other by means of interference fit. Interference fit is a relatively simple and reliable connection method. Depending on the size of the interference, you can choose to install it by heat-fitting or directly knocking it in. If the interference is small, you can directly align the second sleeve 15 with the second end of the traction pin 11, and then evenly insert the second sleeve 15 into the second end of the traction pin 11 by knocking. When the interference is large, you can use the heat-fitting method, that is, heat the second sleeve 15 before installation, and through the principle of thermal expansion and contraction, make the inner diameter of the first sleeve 15 expand after being heated, and then insert it into the second end of the traction pin 11 for assembly, and after cooling, a firm connection effect can be achieved.

[0077] The second sleeve 15 can effectively protect the traction pin 11, so that the second end of the traction pin 11 does not directly contact the first sleeve 14, that is, avoid direct friction between the first sleeve 14 and the second end of the traction pin 11, which can effectively prevent the wear of the traction pin 11 and transfer the friction contact to the second sleeve 15. After long-term use and wear, the second sleeve 15 only needs to be knocked off from the second end of the traction pin 11 and then replaced with a new sleeve. The operation is simple and quick, and the replacement cost is effectively reduced.

[0078] Continue to see Figure 4 As shown, the traction device 10 further includes an elastic buffer 16, which is sleeved on the first sleeve 14, and the outer wall of the elastic buffer 16 is in abutment with the inner wall of the traction pin seat 12. The provision of the elastic buffer 16 enables elastic contact between the traction pin seat 12 and the first sleeve 14, which can effectively protect the first sleeve 14 and the traction pin seat 12, avoid rigid impact and friction between the first sleeve 14 and the inner wall of the traction pin seat 12, and prevent the inner wall of the traction pin seat 12 and the outer wall of the first sleeve 14 from being damaged due to friction.

[0079] The elastic buffer 16 can be made of a variety of materials, such as rubber material, which has good wear resistance and high elasticity and low cost. Using rubber material to make the elastic buffer 16 can not only meet the use requirements, but also reduce costs and improve economic benefits.

[0080] Figure 5 A schematic structural diagram of a side bearing device provided in an embodiment of the present application.

[0081] 5, the side bearing device 20 at least includes: a side bearing plate 21, a side bearing seat 22 and a roller assembly 23 disposed in the side bearing seat. The side bearing seat 22 is located on a crossbeam 31 of the bogie 100, and the side bearing seat 22 is fixedly connected to the crossbeam 31. The side bearing seat 22 and the crossbeam 31 can be connected by welding, bolt fasteners and other methods.

[0082] The side bearing seat 22 is used to set a roller assembly 23 to provide support and limit the roller assembly 23 so that the roller assembly 23 is always located in the side bearing seat 22 and rotates.

[0083] The roller assembly 23 includes a first roller 231 . Two or more first rollers 231 are rotatably disposed in the side bearing seat 22 , and the axial direction of the first roller 231 is parallel to the extending direction of the cross beam.

[0084] The side bearing plate 21 is located above the roller assembly 23 and is in contact with the first roller 231. The side bearing plate 21 is connected to the frame 200 on a side away from the first roller 231. The first roller 231 provides support for the frame 200 so that the weight of the traction locomotive 1000 can be evenly distributed on each wheel. On the one hand, it can ensure that the axle and the wheel are evenly stressed and extend the service life of the axle and the wheel. On the other hand, it can ensure the balance and stability of the connection between the frame 200 and the bogie 100.

[0085] It should be noted that the side bearing plate 21 is in abutment contact with the first roller 231 , and there is no fixed connection between the two. The side bearing plate 21 can move relative to the first roller 231 , which helps to improve the stability and smoothness of the operation of the traction locomotive 1000 .

[0086] Specifically, for example, when the traction locomotive 1000 is traveling on a curved section, that is, when it needs to turn, under the action of centripetal force, the frame 200 will tilt toward the inside of the turn, and press against the first roller 231 located on the inside of the turn. At this time, the pressed first roller 231 will generate a supporting reaction force on the frame 200, which can suppress the tilt of the frame 200, ensure that the traction locomotive 1000 passes the curved section safely and smoothly, and improve the stability and safety of the traction locomotive 1000 when traveling on a curve.

[0087] In addition, when the traction locomotive 1000 is traveling on a curve, the frame 200 will rotate relative to the bogie 100, and the first roller 231 and the side bearing plate 21 will also move relative to each other, generating friction resistance. On the one hand, the rotation resistance between the locomotive frame 200 and the bogie 100 can be increased, the relative rotation between the frame 200 and the bogie 100 can be suppressed, and the head shaking snake-like motion between the frame 200 and the bogie 100 can be prevented, thereby ensuring the stability and smoothness of the traction locomotive 1000 traveling on a curve.

[0088] On the other hand, during the relative movement between the first roller 231 and the side bearing plate 21, the first roller 231 rotates, which can effectively reduce the wear of the first roller 231 and the side bearing plate 21. Moreover, the provision of the first roller 231 can reduce the resistance generated during the relative movement between the first roller 231 and the side bearing plate 21, so that the rotation resistance between the vehicle frame 200 and the bogie 100 is not too large, thereby preventing the vehicle frame 200 from being seriously blocked and affecting the normal travel of the traction locomotive 1000 on the curved road section.

[0089] There are many ways to connect the side bearing plate 21 and the frame 200. For example, the side bearing plate 21 and the frame 200 can be connected by bolt fasteners, or the side bearing plate 21 and the frame 200 can be connected by welding.

[0090] In addition, an adjustment plate 26 may be provided between the side bearing plate 21 and the first roller 231 . The adjustment plate 26 is used to assist in adjusting the thickness of the side bearing plate 21 . That is, the adjustment plate 26 may be added according to specific installation requirements to ensure abutment contact between the side bearing plate 21 and the roller assembly 23 .

[0091] Continue to see Figure 5 As shown, the side bearing device 20 also includes a side bearing outer seat 24 and an elastic buffer pad 25, wherein the side bearing outer seat 24 is arranged around the outer periphery of the side bearing seat 22, the elastic buffer pad 25 is located inside the side bearing outer seat 24, and the elastic buffer pad 25 is located between the side bearing seat 22 and the cross beam 31.

[0092] The elastic buffer pad 25 can provide a certain buffering effect for the contact between the first roller 231 and the side bearing plate 21, avoid the rigid impact between the first roller 231 and the side bearing plate 21, and play a good protective role for the first roller 231 and the side bearing plate 21. Moreover, it can also provide a certain shock absorption effect for the traction locomotive 1000.

[0093] The side bearing outer seat 24 is connected to the cross beam 31. The side bearing outer seat 24 can limit the side bearing seat 22 and the elastic buffer 25, and fix the side bearing seat 22 and the elastic buffer 25 on the cross beam.

[0094] The side bearing outer seat 24 and the cross beam 31 may be fixedly connected in a variety of ways, such as by fixing the side bearing outer seat 24 to the cross beam 31 by bolt fasteners, or by fixing the side bearing outer seat 24 to the cross beam 31 by welding.

[0095] The elastic buffer pad 25 may be formed of a rubber material, which has high wear resistance and good elasticity and low cost.

[0096] See also Figure 6 As shown, the roller assembly 23 further includes a second roller 232 disposed in the side bearing seat 22 . The second roller 232 is located on both sides of the first roller 231 , and the axial direction of the second roller 232 is inclined to the axial direction of the first roller 231 .

[0097] When the traction locomotive 1000 is traveling on a curved turning section, the inclined setting of the second roller 232 facilitates the relative movement between the roller assembly 23 and the side bearing plate 21, reduces the friction resistance between the roller assembly 23 and the side bearing plate 21, thereby reducing the wear between the roller assembly 23 and the side bearing plate 21 and avoiding frequent replacement of worn parts.

[0098] In addition, the reduction of the friction resistance between the second roller 232 and the side bearing plate 21 can also enable the traction locomotive 1000 to pass through the curved section smoothly, further ensuring the stability and safety of the traction locomotive 1000 traveling on the curved section.

[0099] It should be noted that there may be more than one first roller 231 and more than one second roller 232 , and there may be various distribution methods between the first roller 231 and the second roller 232 , such as a first roller 231 having a second roller 232 on both sides thereof.

[0100] Alternatively, a plurality of first rollers 231 form a group, and one or more second rollers 232 are respectively provided on both sides of each first roller group, and the specific configuration can be set according to scene requirements.

[0101] Continue to see Figure 6 As shown, the roller assembly 23 also includes a roller seat 233, and a roller groove is formed on the roller seat 233. The first roller 231 and the second roller 232 are rotatably disposed in the roller grooves. The roller seat 233 can provide support and restriction for the first roller 231 and the second roller 232, so that the first roller 231 and the second roller 232 move in the roller groove of the roller seat 233 to prevent the rollers from coming out or sliding off.

[0102] The structure of the roller includes a middle part and two ends, wherein the diameter of the ends is smaller than the diameter of the middle part, and the structure of the roller groove includes an overlapped part and a through groove part. The overlapped part is provided on the side of the roller seat 233 facing the side bearing plate 21, and the through groove part runs through the thickness direction of the roller seat 233. The ends of the roller are overlapped and arranged on the overlapped part, and part of the middle part of the roller is located in the through groove, and the rest is located outside the through groove.

[0103] In this way, during the rotation of the roller, only the two ends of the roller are in contact and friction with the roller seat 233, while the middle of the roller is not in direct contact with the roller seat 233, thus preventing the middle of the roller from being subjected to contact and friction, reducing the wear of the middle of the roller, and effectively reducing the resistance of the roller during the rotation process. This facilitates the relative movement between the roller and the side bearing plate 21, further ensuring the stability and safety of the traction locomotive 1000 during the curve driving process.

[0104] In addition, lubricating oil can be introduced into the through groove, so that the roller can contact with the lubricating oil during the rotation process, providing good lubrication for the roller, so that the roller has less friction resistance during the mutual movement with the side bearing plate 21, thereby reducing the degree of wear of the roller and the side bearing plate 21.

[0105] The through groove is also provided with a groove on the side facing away from the side bearing plate 21. The extension direction of the groove is perpendicular to the axial direction of the first roller 231, and passes through the side of the roller seat 233 facing away from the side bearing plate 21. In this way, the bottom of the roller seat 233 can be connected, and when the lubricating oil is introduced into the roller seat 233, it is convenient for the lubricating oil to be evenly distributed.

[0106] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0107] In the description of the present invention, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0108] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and it can make the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A traction system for connecting a traction locomotive and a bogie, characterized in that: include: A traction device and a side bearing device, wherein the traction device is arranged at the center of the cross beam of the bogie, the side bearing device is arranged on the cross beam, and the side bearing device is located on both sides of the traction device, and the side bearing device is used to contact with the frame of the traction locomotive to provide support for the frame; The traction device comprises a traction pin and a traction pin seat, wherein the first end of the traction pin seat passes through the cross beam and extends to the bottom of the cross beam, the second end of the traction pin seat is arranged on a surface of the cross beam facing the vehicle frame, the first end of the traction pin is connected to the vehicle frame, and the second end of the traction pin is inserted into the traction pin seat; The side bearing device comprises a side bearing plate, a side bearing seat and a roller assembly arranged in the side bearing seat; The side bearing seat is located on the cross beam, the roller assembly includes a first roller, the first roller is rotatably disposed in the side bearing seat, and the axial direction of the first roller is parallel to the extension direction of the cross beam, the side bearing plate is located above the first roller and contacts and abuts against the first roller, and the side bearing plate is connected to the vehicle frame; The side bearing device also includes a side bearing outer seat and an elastic buffer pad; The side bearing outer seat is arranged around the outer periphery of the side bearing seat, the side bearing outer seat is connected to the cross beam, the elastic buffer pad is arranged in the side bearing outer seat, and the elastic buffer pad is located between the side bearing seat and the cross beam; The roller assembly also includes a second roller rotatably disposed in the side bearing seat, the second roller is located on both sides of the first roller, and the axial direction of the second roller is inclined to the axial direction of the first roller.

2. The traction system according to claim 1, characterized in that: The traction device also includes a first sleeve and a gland; The gland includes a connecting portion and an extending portion, wherein the connecting portion is located on the first end of the traction pin seat and connected to the traction pin seat, one end of the extending portion is connected to the connecting portion, and the other end of the extending portion extends into the traction pin seat; The first sleeve is located in the traction pin seat, and one end of the first sleeve abuts against the bottom of the traction pin seat, the other end of the first sleeve abuts against the extension portion, and the second end of the traction pin is inserted into the first sleeve.

3. The traction system according to claim 2, characterized in that: The traction device further comprises a second sleeve, and the second sleeve is sleeved on the outer periphery of the second end of the traction pin by means of interference fit.

4. The traction system according to claim 2, characterized in that: The traction device further comprises an elastic buffer, which is sleeved on the first sleeve, and the outer wall of the elastic buffer is in abutment contact with the inner wall of the traction pin seat.

5. The traction system according to claim 2, characterized in that: It also includes a connecting piece, and the pressure cover and the traction pin seat are detachably connected through the connecting piece.

6. The traction system according to claim 1, characterized in that: The roller assembly further comprises a roller seat, the roller seat is provided with a roller groove, the first roller and the second roller are rotatably disposed in the roller groove respectively; The roller includes a middle portion and two end portions, the diameter of the end portions is smaller than the diameter of the middle portion, the roller groove includes an overlapping portion and a through groove portion, the overlapping portion is provided on a surface of the roller seat facing the side bearing plate, the through groove portion runs through the thickness direction of the roller seat, the end portions are overlapped and arranged on the overlapping portion, and part of the middle portion is located in the through groove portion.

7. A traction locomotive, characterized in that: The vehicle comprises at least a vehicle frame, a bogie and a traction system as described in any one of claims 1 to 6, wherein the vehicle frame and the bogie are connected via the traction system.

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