Bogie of narrow gauge railway generator car

Abstract

The invention discloses a narrow gauge railway generator car bogie. The technical problem that in the prior art, a bogie applied to a narrow gauge railway is poor in stability is solved. The narrow gauge railway generator car bogie comprises a swing bolster assembly which comprises a swing bolster body and a lower center plate arranged in the middle of the swing bolster body; the two side frame assemblies are oppositely arranged at the two ends of the swing bolster body, each side frame assembly comprises a side frame body and two elastic stoppers, each side frame body is provided with a groove used for containing the swing bolster body, one end of each swing bolster body is connected with the bottom face of the corresponding groove, and the two elastic stoppers are arranged on the two opposite side walls, in the moving direction of the bogie, of each groove. The elastic baffles are attached to the two side walls of the swing bolster body. The two wheel set assemblies are oppositely arranged on the two sides of the swing bolster body, and the two ends of each wheel set assembly are connected with the side frame body through the axle box suspension devices respectively. The bogie is high in stability.

Description

Technical Field

[0001] The present application belongs to the technical field of bogies, and in particular relates to a bogie for a narrow-gauge railway power generation vehicle. Background Art

[0002] As an independent running device, the bogie is used to directly support the vehicle body, bear and transfer the weight of various parts above the frame, and ensure the normal operation of the vehicle and the comfort of the vehicle. With the increase in the running speed and the requirements for running quality of railway vehicles, the development of frame bogies in my country has reached a new level. Although frame bogies have sufficient static and dynamic energy storage and excellent mechanical properties, most of the research in this part focuses on bogies used in wide-gauge rails.

[0003] Some areas still have narrow gauge railways that have been incorporated into the national operating railway network. Narrow gauge railways refer to railways with a track gauge of less than 1435mm. Simply changing the design of the wide-gauge bogies and applying them to the narrow-gauge ones will cause the stability of the bogies to deteriorate, which will in turn lead to poor load-sharing performance of the bogies, affecting the normal operation of the vehicles. Summary of the invention

[0004] In order to solve the technical problem of poor stability of the bogies currently used in narrow-gauge railways, the present application provides a bogie for a narrow-gauge railway power generation vehicle.

[0005] In a first aspect of the present application, a bogie for a narrow-gauge railway power generation vehicle is provided, comprising:

[0006] The bolster component comprises a bolster body and a lower center plate arranged in the middle of the bolster body;

[0007] The bogie comprises two side frames, the two side frames are arranged at two ends of the bolster body, the side frame comprises a side frame body and two elastic stops, the side frame body has a groove for accommodating the bolster body, one end of the bolster body is connected to the bottom surface of the groove, the two elastic stops are arranged on the opposite side walls of the groove along the moving direction of the bogie, and the elastic stops are in contact with the side walls of the bolster body;

[0008] The two wheelset components are relatively arranged on both sides of the bolster body, and the two ends of each wheelset component are connected to the side frame body through an axle box suspension device.

[0009] In some embodiments, the bolster body has a receiving groove for receiving the elastic stop.

[0010] In some embodiments, the end surface of the elastic block facing the bolster body contacts the bottom surface of the accommodating groove; and the side wall of the elastic block is spaced apart from the accommodating groove.

[0011] In some embodiments, the bolster component is provided with two guide plates on the side wall facing the elastic block, the two guide plates are arranged opposite to each other along the length direction of the bolster body to form the accommodating groove, and there is a gap between the two guide plates and the side wall of the elastic block.

[0012] In some embodiments, the receiving grooves are located at both ends of the bolster body and face the side walls of the side frame body.

[0013] In some embodiments, a backing plate is detachably provided on the side wall of the bolster body facing the side frame body, the backing plate corresponds to the elastic block one by one, and the backing plate is in surface contact with the elastic member of the corresponding elastic block.

[0014] In some embodiments, the elastic block has a columnar body, one end of which is provided with an elastic member for abutting against the side wall of the bolster body, and the other end of the columnar body is connected to the side frame body; the middle part of the columnar body has a cavity.

[0015] In some embodiments, the bolster assembly further includes a central suspension device, which includes a support plate and springs disposed at both ends of the tray, the support plate is a straight plate, and the two ends of the support plate are respectively disposed between the bolster body and the side beam body.

[0016] In some embodiments, two springs are disposed at each end of the tray, and the two springs are symmetrically disposed along the center line of the tray, wherein the springs include an outer circular spring and an inner circular spring sleeved in the outer circular spring;

[0017] Spring mounting seats are arranged at both ends of the tray to fix the spring on the tray.

[0018] In some embodiments, the narrow-gauge railway power car bogie further includes a vertical shock absorber, and two of the vertical shock absorbers are respectively arranged at the two ends of the bolster body; the opposite end surfaces of the bolster body are each provided with a first mounting seat for being hinged to the vertical shock absorber, and the side wall of each side frame body is provided with a second mounting seat for being hinged to the vertical shock absorber;

[0019] The narrow-gauge railway power car bogie also includes a longitudinal protection device, which includes a traction rod and ball joints arranged at both ends of the traction rod, the end surface of the bolster body is provided with a first traction rod seat for connecting with one of the ball joints, and the side wall of the side beam body is provided with a second traction rod seat for connecting with another of the ball joints;

[0020] The top of the bolster body is also provided with an elastic side bearing component, and two of the elastic side bearing components are respectively arranged at two ends of the top wall of the bolster body.

[0021] The bogie provided according to one or more embodiments of the present application further limits the relative position between the bolster assembly and the side frame body by providing an elastic stop. When the bogie turns on a narrow track, each side frame body is provided with an elastic stop that contacts or abuts against the bolster body, i.e., both ends of the bolster body are subjected to force in opposite directions, so that relative displacement is not likely to occur between the side frame body and the bolster body, thereby ensuring that the traction rod between the side frame body and the bolster body will not be further deformed or fall off due to the relative displacement between the side frame body and the bolster body, and the traction rod is not likely to fail. Even if the traction rod fails, the elastic stop can maintain contact with the bolster body, so that the bogie can complete the steering function, thereby increasing the stability and safety of the bogie during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a narrow-gauge railway power generation vehicle bogie in one or more embodiments of the present application is shown.

[0023] Figure 2 Shows Figure 1 Schematic diagram of the structure of the middle and side frames.

[0024] Figure 3 Shows Figure 1 Schematic diagram of the structure composed of the middle part of the bolster.

[0025] Figure 4 Shows Figure 1 Schematic diagram of the structure of the central suspension device

[0026] Description of reference numerals: 10-bogie, 100-bolster component, 110-bolster body, 111-accommodating groove, 112-guide plate, 113-pad, 120-lower center plate, 130-central suspension device, 131-support plate, 132-spring, 132a-outer spring, 132b-inner spring, 133-spring mounting seat, 134-swing seat support seat, 135-swing seat, 140-elastic side bearing component, 200-side frame component, 21 0-side frame body, 211-groove, 211a-side wall, 211b-mounting groove, 220-elastic block, 221-columnar body, 222-elastic member, 300-wheel set, 310-axle, 320-wheel, 400-vertical shock absorber, 410-first mounting seat, 420-second mounting seat, 500-longitudinal protection device, 510-traction rod, 520-ball joint, 530-first traction rod seat, 540-second traction rod seat. DETAILED DESCRIPTION

[0027] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] When the bogie turns, the car body, under the action of inertia, also has the same power as the moving direction before turning, and the power acts on the lower center plate of the bogie, that is, the lower center plate is subjected to the first stress from the car body and transmitted to the bolster assembly; the guiding effect of the car track on the wheelset assembly makes the car track have a second stress on the wheelset assembly, and it is transmitted to the side frame body connected to the wheelset assembly. The first stress and the second stress act on the bogie. When the angle between the first stress and the second stress is not a right angle, the side frame body and the bolster body under stress are prone to misalignment, and the traction rod is prone to fail, thereby reducing the stability of the bogie.

[0029] See also Figure 1-Figure 4 According to a first aspect of the present application, there is provided a bogie for a narrow-gauge railway power car, which is used for vehicles running on narrow tracks so that the body of the rail-type vehicle can smoothly complete the turning. The bogie 10 for the narrow-gauge railway power car (hereinafter referred to as the bogie 10) includes a bolster assembly 100, two side frame assemblies 200 and a wheelset assembly 300.

[0030] The bolster assembly 100 includes a bolster body 110 and a lower center plate 120 disposed in the middle of the bolster body 110 . The lower center plate 120 is used to be rotatably connected to the upper center plate of the vehicle body, and transmission is performed through the connected upper center plate and lower center plate 120 .

[0031] The two side frame assemblies 200 are relatively arranged at the two ends of the bolster body 110. The side frame assembly 200 includes a side frame body 210 and two elastic stops 220. The side frame body 210 is a structural member that supports the bolster assembly 100 and connects the two sets of wheel sets assemblies 300. The side frame body 210 has high strength to support the bolster assembly 100 and the vehicle body connected to the bolster assembly 100.

[0032] The side frame body 210 has a groove 211 for accommodating the bolster body 110. One end of the bolster body 110 is connected to the bottom surface of the groove 211. The groove 211 provided on the side frame body 210 can reduce the height of the bolster assembly 100 on the bogie 10, thereby reducing the center of gravity of the bogie 10, thereby improving the overall stability of the bogie 10, and thereby improving the stability of vehicle operation. Two elastic stops 220 are provided on the opposite side walls 211a of the groove 211 along the moving direction of the bogie 10, and the elastic stops 220 are in contact with the side walls 211a of the bolster body 110.

[0033] Two wheel set components 300 are arranged on both sides of the bolster body 110, and both ends of each wheel set component 300 are connected to the side frame body 210 through an axle box suspension device. The wheel set component 300 is a structural member of the bogie 10 for direct contact with the track, and each wheel set component 300 includes an axle 310 and wheels 320 arranged at both ends of the axle 310.

[0034] The axial direction of the axle 310 is the first direction, the length direction of the side frame body 210 is the second direction, the first direction is perpendicular to the second direction, and the length direction of the bolster body 110 is parallel to the first direction. Two elastic stops 220 are arranged on the opposite side walls 211a of the groove 211 along the moving direction of the bogie 10, and the elastic stops 220 are in contact with the side walls 211a of the bolster body 110, that is, the two elastic stops 220 are arranged along the second direction. By providing the elastic stopper 220, the relative position between the bolster assembly 100 and the side frame body 210 is further limited. When the bogie 10 turns on the narrow track, each side frame body 210 has an elastic stopper 220 in contact with or against the bolster body 110, that is, both ends of the bolster body 110 are subjected to force in opposite directions, so that relative displacement is not likely to occur between the side frame body 210 and the bolster body 110, thereby ensuring that the traction rod 510 between the side frame body 210 and the bolster body 110 will not be further deformed or fall off due to the relative displacement between the side frame body 210 and the bolster body 110, and the traction rod 510 is not likely to fail. Even if the traction rod 510 fails, the elastic stopper 220 can still maintain contact with the bolster body 110, so that the bogie 10 can complete the steering function, thereby increasing the stability and safety of the bogie 10 during operation.

[0035] Among them, the elastic block 220 has a certain elasticity, so that when the bogie 10 turns, the elastic block 220 or part of the elastic block 220 is deformed, and there is soft contact between the elastic block 220 and the rocker body 110. The impact generated by the contact is small, and it is not easy to damage the rocker body 110 and the side frame body 210, which is beneficial to the long-term and stable operation of the bogie 10.

[0036] See also Figure 1 and Figure 3In some embodiments, the bolster body 110 has a receiving groove 111 for receiving the elastic stopper 220. The receiving groove 111 has at least two side walls 211a to form a groove-like structure. It can be understood that the elastic stopper 220 is located in the receiving groove 111. When the bolster body 110 is displaced relative to the side frame body 210, at least one elastic stopper 220 on the same side frame body 210 can maintain contact with the side wall 211a or the bottom wall of the receiving groove 111, reducing some situations where the elastic stopper 220 is weak or ineffective due to a relatively smooth contact surface, thereby ensuring the ability of the elastic stopper 220 to limit the bolster body 110.

[0037] In some embodiments, the end surface of the elastic stopper 220 facing the bolster body 110 contacts the bottom surface of the receiving groove 111 ; the side wall 211 a of the elastic stopper 220 is spaced apart from the receiving groove 111 .

[0038] When the vehicle body is traveling straight on the track, the force exerted by the vehicle body on the side frame body 210 through the bolster assembly 100 is parallel to the second direction, and thus, the two elastic stops 220 on the same side frame body 210 are in contact with the bottom of the receiving groove 111 through their end faces, so that during the turning process of the bogie 10, the force exerted by the elastic stops 220 on the bolster body 110 can act on the direction of rotation of the bogie 10 to a greater extent, thereby improving the limiting effect of the elastic stops 220 on the bolster body 110 and the side frame body 210. Among them, the side wall of the elastic stop 220 is arranged at an interval with the receiving groove 111, so as to leave a gap between the elastic stop 220 and the bolster body 110, so as to adapt to the possible bumps of the bogie 10 during the driving process, and reduce the damage of the side wall of the receiving groove 111 and the elastic stop 220 due to hard contact. Of course, in some embodiments, an elastic member 222 can also be arranged on the side wall of the elastic stop 220 to reduce the impact of hard contact.

[0039] See also Figure 1 and Figure 3 In some embodiments, two guide plates 112 are provided on the side wall of the bolster assembly 100 facing the elastic block 220 , and the two guide plates 112 are arranged opposite to each other along the length direction of the bolster body 110 to form a receiving groove 111 , and there is a gap between the two guide plates 112 and the side wall of the elastic block 220 .

[0040] The two guide plates 112 form a group of guide plates 112. Four groups of guide plates 112 are provided on the bolster assembly 100 to limit the multiple elastic stops 220 on the side frame body 210 respectively. The two guide plates 112 are arranged opposite to each other along the length direction of the bolster body 110, that is, the elastic stops 220 are not blocked in the vertical direction. When the bogie 10 bumps and causes the bolster body 110 and the side frame body 210 to be displaced in the vertical direction, the bolster body 110 and the guide plates 112 will not collide with the elastic stops 220, and the elastic stops 220 are not easily damaged. Only when the bolster assembly 100 and the side frame body 210 are displaced in the horizontal direction, the accommodating groove 111 can cooperate with the elastic stops 220 to avoid serious misalignment between the bolster body 110 and the side frame body 210 and cause the traction rod 510 to fail.

[0041] In some embodiments, the receiving grooves 111 are located at both ends of the bolster body 110 and face the sidewalls of the side frame body 210. That is, the bottom wall of the receiving groove 111 is perpendicular to the second direction, so that when the elastic stopper 220 contacts the bottom of the receiving groove 111, the force can be more transmitted along the first direction.

[0042] See also Figure 1 and Figure 3 In some embodiments, a backing plate 113 is detachably provided on the side wall of the bolster body 110 facing the side frame body 210 , and the backing plate 113 corresponds to the elastic block 220 one by one, and the backing plate 113 is in surface contact with the elastic member 222 of the corresponding elastic block 220 .

[0043] Considering that the weight of the vehicle body carried by the bogie 10 is large and the inertia of the vehicle body is large, the pad 113 prevents the elastic stop 220 from directly contacting the bolster body 110, so as to reduce the probability of deformation of the bolster body 110. By regularly replacing the pad 113, the pad 113 on the bogie 10 is in contact with the elastic stop 220 or the gap between the pad 113 and the elastic stop 220 is small, that is, when the bolster body 110 and the side frame body 210 have a small displacement, they can also be resisted by the elastic stop 220 and further displacement is limited, thereby reducing the probability of failure of the traction rod 510.

[0044] In some embodiments, the elastic stopper 220 has a columnar body 221, one end of the columnar body 221 is provided with an elastic member 222 for contacting the side wall of the bolster body 110, and the other end of the columnar body 221 is connected to the side frame body 210; the middle of the columnar body 221 has a cavity. The columnar structure has high strength and anti-deformation ability, and the cavity in the columnar body 221 makes the column have good strength and low weight. The elastic member 222 can be a structural member with certain strength and toughness such as rubber, plastic or wood.

[0045] See also Figure 1 and Figure 4 In some embodiments, the bolster assembly 100 further includes a central suspension device 130, which includes a support plate 131 and springs 132 disposed at both ends of the support plate. The support plate 131 is a straight plate, and both ends of the support plate 131 are respectively disposed between the bolster body 110 and the side beam body. The support plate 131 is a straight plate, so that when the bogie 10 can be applied on a narrow track, the support plate 131 is not prone to stress concentration, which is conducive to the lateral swing of the car body on the narrow track.

[0046] In some embodiments, connecting parts are further provided at both ends of the bottom surface of the support plate 131 to facilitate the installation of the rocker assembly 100 on the side frame body 210. Specifically, the connecting parts include a swing seat 135 connected to the support plate 131 and a swing seat support seat 134 arranged on the swing seat 135. The bottom wall of the groove 211 of the side frame body 210 is provided with an installation groove 211b that matches the support of the swing seat 135. After the swing seat support seat 134 is arranged in the installation groove 211b, the relative position between the rocker assembly 100 and the side frame body 210 can also be limited.

[0047] See also Figure 4 In some embodiments, two springs 132 are provided at each end of the tray, and the two springs 132 are symmetrically arranged along the center line of the tray, wherein the springs 132 include an outer circular spring 132a and an inner circular spring 132b sleeved in the outer circular spring 132a; spring mounting seats 133 are provided at both ends of the tray to fix the springs 132 on the tray. The plane where the axes of the two springs 132 are located is parallel to the second direction. Furthermore, the two springs 132 at the same end of the tray are symmetrically arranged in the first direction where the rotation axis of the lower center plate 120 is located, so as to improve the symmetry of the bolster assembly 100, thereby making the force of the elastic block 220 balanced during the rotation of the bogie 10, which is beneficial to improving the stability of the bogie 10.

[0048] The bogie 10 of the narrow-gauge railway power car also includes a longitudinal protection device 500, which includes a traction rod 510 and ball joints 520 arranged at both ends of the traction rod 510, the end surface of the rocker body 110 is provided with a first traction rod seat 530 for connecting with one ball joint 520, and the side wall of the side frame body 210 is provided with a second traction rod seat 540 for connecting with another ball joint 520. It can be understood that the first traction rod seat 530 and the second traction rod seat 540 are both located on the outside of the bogie, that is, the traction rod 510 is located on the outside of the side frame body 210. On the one hand, it will not occupy the space between the two side frame bodies 210, giving the bogie 10 more space for installing brake components or other devices. On the other hand, the longitudinal protection device 500 is arranged on the side wall of the side frame body 210, and the traction rod 510 is connected to the first traction rod seat 530 and the second traction rod seat 540 through the ball joint 520, so that the traction rod 510 is not easily affected by the vertical ups and downs of the bogie 10, thereby reducing the probability of failure of the traction rod 510 and ensuring the stable operation of the bogie 10.

[0049] It should be noted that the longitudinal direction in the present application refers to the moving direction of the bogie 10, that is, parallel to the second direction; the transverse direction is parallel to the first direction, and the vertical direction is perpendicular to the first direction and the second direction.

[0050] Specifically, the traction rod 510 can be a forged structure made of Q345E or 40Cr material, and the longitudinal stiffness is selected to be 15MN / m. The ball joint 520 is a composite structure made of rubber and metal; the traction rod 510 and the traction rod seat are matched at a small angle to ensure that the ball joint 520 is in a tight fit state under the tightening force of the bolt, eliminating the longitudinal gap.

[0051] The top of the bolster body 110 is also provided with an elastic side bearing assembly 140, and two elastic side bearing assemblies 140 are respectively provided at the two ends of the top wall of the bolster body 110, so as to improve the rotation constraint and rollover constraint between the bogie 10 and the car body. Specifically, the lower center plate 120 is connected to the bolster body 110 by bolts, and a nylon conductive center plate wear plate is installed in the lower center plate 120, and the elastic side bearing assembly 140 is welded to the bolster, and the two elastic side bearing assemblies are symmetrically arranged relative to the rotation axis of the lower center plate 120.

[0052] See also Figure 1In some embodiments, the narrow-gauge railway power car bogie 10 also includes a vertical shock absorber 400, two vertical shock absorbers 400 are respectively arranged at the two ends of the bolster body 110; the vertical shock absorber 400 is arranged vertically; the two opposite end surfaces of the bolster body 110 are provided with a first mounting seat 410 for articulating with the vertical shock absorber 400, and the side wall of each side frame body 210 is provided with a second mounting seat 420 for articulating with the vertical shock absorber 400, and the vertical shock absorber 400 is used to improve the vertical dynamic performance and improve the stability of the bogie 10 during use. Specifically, the installation inclination angle of the vertical shock absorber 400 is 5°, so that the vertical shock absorber 400 can still to a certain extent. The vertical oil pressure shock absorber provides vertical and lateral damping, and the damping coefficient is selected to be 60-80kN*s / m to improve the vertical dynamic performance of the vehicle.

[0053] As described above, the bogie 10 of the present application, through the combination of multiple devices such as the side frame assembly 200, the rocker assembly 100, the longitudinal protection device 500 and the vertical shock absorber 400, enables the bogie 10 to have higher vertical dynamic performance and longitudinal dynamic performance during the operation with the car body, and during the use of the bogie 10, whether it is vertical shaking or longitudinal shaking, the traction rod 510 is not easy to fail; even if the traction rod 510 fails under extreme working conditions, the elastic block 220 can maintain the resistance against the rocker body 110, play a traction role, so that the bogie 10 can operate normally and the safety is greatly improved.

[0054] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0055] In the description of the present application, 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", "clockwise" and "counterclockwise" 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 application and simplifying the description, and do not indicate or imply 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 a limitation on the present application.

[0056] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be 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 this application can be understood according to specific circumstances.

[0057] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0058] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A bogie for a narrow-gauge railway power car, characterized in that: include: The bolster component comprises a bolster body and a lower center plate arranged in the middle of the bolster body; The bogie comprises two side frames, the two side frames are arranged at two ends of the bolster body, the side frame comprises a side frame body and two elastic stops, the side frame body has a groove for accommodating the bolster body, one end of the bolster body is connected to the bottom surface of the groove, the two elastic stops are arranged on the opposite side walls of the groove along the moving direction of the bogie, and the elastic stops are in contact with the side walls of the bolster body; The two wheelset components are relatively arranged on both sides of the bolster body, and the two ends of each wheelset component are connected to the side frame body through an axle box suspension device.

2. The narrow-gauge railway power car bogie according to claim 1, characterized in that: The bolster body has a receiving groove for receiving the elastic stopper.

3. The narrow-gauge railway power car bogie according to claim 2, characterized in that: The end surface of the elastic block facing the bolster body contacts the bottom surface of the accommodating groove; the side wall of the elastic block is spaced apart from the accommodating groove.

4. The narrow-gauge railway power car bogie according to claim 3, characterized in that: The bolster component is provided with two guide plates on the side wall facing the elastic block, and the two guide plates are arranged opposite to each other along the length direction of the bolster body to form the accommodating groove, and there is a gap between the two guide plates and the side wall of the elastic block.

5. The narrow-gauge railway power car bogie according to claim 2, characterized in that: The receiving grooves are located at two ends of the bolster body and face the side walls of the groove.

6. The narrow-gauge railway power car bogie according to claim 1, characterized in that: A backing plate is detachably provided on the side wall of the bolster body facing the side frame body, the backing plate corresponds to the elastic block one by one, and the backing plate is in surface contact with the elastic member of the corresponding elastic block.

7. The narrow-gauge railway power car bogie according to claim 1, characterized in that: The elastic block has a columnar body, one end of which is provided with an elastic member for abutting against the side wall of the bolster body, and the other end of which is connected to the side frame body; a cavity is provided in the middle of the columnar body.

8. The narrow-gauge railway power car bogie according to claim 1, characterized in that: The bolster component also includes a central suspension device, which includes a support plate and springs arranged at both ends of the tray. The support plate is a straight plate, and the two ends of the support plate are respectively arranged between the bolster body and the side beam body.

9. The narrow-gauge railway power car bogie according to claim 8, characterized in that: Two springs are arranged at each end of the tray, and the two springs are symmetrically arranged along the center line of the tray, wherein the springs include an outer circle spring and an inner circle spring sleeved in the outer circle spring; Spring mounting seats are arranged at both ends of the tray to fix the spring on the tray.

10. The narrow-gauge railway power car bogie according to claim 1, characterized in that: The narrow-gauge railway power car bogie also includes a vertical shock absorber, two of which are arranged at the two ends of the bolster body; the two opposite end surfaces of the bolster body are each provided with a first mounting seat for being hinged to the vertical shock absorber, and the side wall of each side frame body is provided with a second mounting seat for being hinged to the vertical shock absorber; The narrow-gauge railway power car bogie also includes a longitudinal protection device, which includes a traction rod and ball joints arranged at both ends of the traction rod, the end surface of the bolster body is provided with a first traction rod seat for connecting with one of the ball joints, and the side wall of the side beam body is provided with a second traction rod seat for connecting with another of the ball joints; The top of the bolster body is also provided with an elastic side bearing component, and two of the elastic side bearing components are respectively arranged at two ends of the top wall of the bolster body.

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