WO2022122011A1

WO2022122011A1 - Traction beam for rail train, and traction device

Info

Publication number: WO2022122011A1
Application number: PCT/CN2021/137049
Authority: WO
Inventors: 曹洪勇; 杨东晓; 曹庆达; 杨伟东; 杨欣
Original assignee: 中车青岛四方机车车辆股份有限公司
Priority date: 2020-12-10
Filing date: 2021-12-10
Publication date: 2022-06-16
Also published as: EP4206055A1; EP4206055A4; JP2023548623A; CN112606862A; CN112606862B

Abstract

A traction beam for a rail train, and a traction device. The traction device comprises the traction beam; the traction beam comprises an intermediate and two ends arranged at the two ends of the intermediate; a pin sleeve hole used for mounting a central pin sleeve is provided on the intermediate; a pull rod hole used for connecting a traction pull rod is provided on each end; the end comprises a main part, the cross-sectional area of the main part shrinking along a length direction of the traction beam; the end, having a larger cross-sectional area, of the main part is connected to the intermediate; a curved part is provided on a side surface of the intermediate; the side surface of the intermediate, by means of the curved surface part thereof, is in smooth transition with a side surface of the main part. The traction beam and the traction device provided by the present application are light in weight and high in structural strength, can fully satisfy bearing requirements, is small in size and small in occupied vertical installation space, and does not affect the arrangement of an anti-side rolling device.

Description

Traction beams and traction devices for rail trains

This application claims the priority of the Chinese patent application filed on December 10, 2020 with the application number 202011438180.3 and the application name is "traction beam and traction device for rail trains", the entire contents of which are incorporated herein by reference middle.

technical field

The present application relates to the technical field of rail trains, and in particular, to a traction beam and a traction device of a rail train.

Background technique

There are many types of traction devices for rail trains, generally divided into: single pull rod traction device and double pull rod traction device.

The single pull rod pulling device is only provided with one pulling pull rod, one end of the pulling pull rod is connected with the pulling pin seat, and the other end is connected with the frame. With this traction device, it is difficult to arrange the anti-rolling device, and at the same time, it is difficult to meet the requirements of the vehicle passing through small curves.

The double-pull rod traction device is provided with two traction rods, and the two traction rods are respectively connected to the two ends of the traction beam. The adoption of this traction device can meet the requirements of the vehicle passing through small curves, and also does not affect the arrangement of the anti-roll device. However, the self-heavy weight of the double tie rod traction device requires high structural strength of the vehicle, which limits the application of the double tie rod traction device.

Therefore, it is necessary to reduce the weight of the double tie rod traction device. However, how to achieve the lightweight and also ensure the structural strength is a difficult problem for those skilled in the art.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present application provides a traction beam of a rail train, the traction beam includes an intermediate body and two end bodies arranged at both ends of the intermediate body, and the intermediate body is provided with a center pin sleeve for installing a center pin sleeve. The pin sleeve hole, the end body is provided with a pull rod hole for connecting the traction rod, the end body includes a main body part with a reduced cross-sectional area along the length direction of the traction beam, and the main body part has a large cross-sectional area. One end is connected to the intermediate body, the side surface of the intermediate body is provided with a curved surface portion, and the curved surface portion of the side surface of the intermediate body smoothly transitions with the side surface of the main body portion.

In one embodiment, the side surface of the intermediate body is provided with a concave first curved surface portion and an external convex second curved surface portion, and the side surface of the intermediate body is provided with the first curved surface portion and the main body at one end. The side surface of the main body smoothly transitions with its second curved surface portion and the side surface of the main body portion at the other end; the side surface of the main body portion and the first curved surface portion of the side surface of the intermediate body smoothly transition, The other side surface of the main body portion smoothly transitions to the second curved surface portion of the other side surface of the intermediate body. The concave first curved surface and the convex second curved surface make the side of the traction beam roughly "S" shape, which can increase the length of the tie rod, and reduce the compression of the tie rod joint at the same turning angle, which is beneficial to the life of the tie rod joint. improve.

In one embodiment, the distance between the top surface and the bottom surface of the traction beam is relatively small, and a high-strength flattened structure is adopted as a whole to avoid space for the installation of the anti-roll torsion bar and the installation of other parts of the bogie; The distance between the traction rod and the car body is conducive to lightweight design while ensuring the strength of the traction pin.

In one embodiment, the intermediate body is provided with a first weight reduction hole and a second weight reduction hole, the first weight reduction hole is arranged close to the pin sleeve hole, and the second weight reduction hole is close to the The end body is arranged, and a reinforcing rib is formed between the first weight reduction hole and the second weight reduction hole.

In an embodiment, a side surface of the main body part is partially recessed to form a notch groove, and the notch groove penetrates to one end face of the main body part away from the intermediate body and the top surface and the top surface of the main body part. On the bottom surface, the side wall c and the end wall c of the notch groove smoothly transition.

In an embodiment, the end body further includes a connecting sleeve, the connecting sleeve is connected to the end of the main body part away from the intermediate body with its circumferential surface, and two of the connecting sleeves are provided on the end body. One of the tie rod holes is arranged on the main body part, and the other is the inner hole of the connecting sleeve.

In an embodiment, the two draw rod holes are arranged along the length direction of the draw beam.

In one embodiment, a lifting stop is provided on the traction beam, and a connecting hole for connecting the adjusting pad is provided on the lifting stop.

In one embodiment, the traction beam is a center-symmetric structure, the center of symmetry is the midpoint of the central axis of the pin sleeve hole, and the hole wall of the pin sleeve hole is provided with an annular groove and a groove facing the annular groove of the stairs.

The application also provides a traction device, comprising a traction beam, a center pin sleeve, a center pin, two traction rods, an elastic snap ring and a fastening component, the traction beam is the traction beam described in the claim; the center pin The sleeve is installed in the pin sleeve hole, the elastic snap ring is installed in the annular groove, one end of the central pin sleeve abuts on the step surface, and the other end abuts on the elastic snap ring, so The center pin is installed in the inner hole of the center pin sleeve and is fastened together with the center pin sleeve through the fastening assembly, and the two pulling rods are respectively connected to the pulling rod holes at both ends of the pulling beam.

In one embodiment, the fastening assembly includes a bolt, a gland and a washer, the center pin has a tapered portion with an internal threaded hole, and the inner hole of the center pin sleeve is a tapered hole, so The tapered portion extends into the tapered hole, the bolt is screwed into the inner threaded hole through the gland, and under the action of the tightening force of the bolt, the gland and the The central pin sleeve is in close contact, and the tapered portion is in close contact with the hole wall of the tapered hole.

The traction beam and the traction device provided by the present application have light weight and high structural strength, can fully meet the bearing requirements, and are small in size, occupying little vertical installation space, and will not affect the arrangement of the anti-rolling device.

Description of drawings

1 is a perspective view of an embodiment of a traction device provided by the application;

FIG. 2 is a view taken along the line A-A of FIG. 1 .

The reference numerals are explained as follows:

10 traction beam;

11 Intermediate body, 111 pin sleeve hole, 112 annular groove, 113 stepped surface, 114 first weight reduction hole, 115 second weight reduction hole, 116 reinforcement rib, a1 first curved surface portion, a2 second curved surface portion;

12 end body, 121 main body, 122 notch groove, c1 side wall, c2 end wall, 123 connecting sleeve, 124 tie rod hole;

13 Lifting stop;

14 Adjust the pad;

100 traction devices;

20 center pin sleeve; 30 center pin; 40 elastic snap ring; 50 bolt; 60 gland; 70 gasket.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present application, the technical solutions of the present application are further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in the figure, the traction device 100 of the rail train provided by the present application includes: a traction beam 10 . The traction beam 10 includes an intermediate body 11 and two end bodies 12 disposed at both ends of the intermediate body 11 .

The traction beam 10 is provided with a pin sleeve hole 111 , and the pin sleeve hole 111 is arranged on the intermediate body 11 . The traction beam 10 can be a center-symmetric structure, and the symmetrical center point is the midpoint of the central axis of the pin sleeve hole 111 , or in other words, the left half of the traction beam 10 (view from FIG. 1 ) rotates 180° around the central axis of the pin sleeve hole 111 It can be completely coincident with the right half of the traction beam 10 .

The pin sleeve hole 111 axially penetrates the top surface and the bottom surface of the intermediate body 11 . As shown in FIG. 2 , an annular groove 112 and a stepped surface 113 facing the annular groove 112 are provided on the hole wall of the pin sleeve hole 111 . In order to facilitate assembly, the annular groove 112 can be arranged close to the top surface of the intermediate body 11 . It is arranged close to the bottom surface of the intermediate body 11 .

The thickness of one end of the intermediate body 11 can be the same as the thickness of one end of the end body 12 that is connected to it. From the perspective of FIG. 1 , the thickness of the right end of the left end body 12 is the same as the thickness of the left end of the intermediate body 11, and the thickness of the left end of the right end body 12 The thickness is the same as that of the right end of the intermediate body 11 .

The intermediate body 11 may be provided with weight reducing holes to reduce the weight of the traction beam 10 . Specifically, a first weight reduction hole 114 may be provided at a position close to the pin sleeve hole 111 , a second weight reduction hole 115 may be provided at a position close to the end body 12 , and between the first weight reduction hole 114 and the second weight reduction hole 115 Reinforcing ribs 116 are formed, which can improve the strength of the intermediate body 11 while reducing weight. Preferably, the reinforcing rib 116 is parallel to the width direction of the traction beam 10 (which is also the longitudinal direction of the rail vehicle), so that the traction force can be guided to be transmitted in a straight line on the reinforcing rib 116 , so that a large bending moment can be avoided on the reinforcing rib 116 .

A curved surface portion (a1 and a2 in the figure) may be provided on the side surface of the intermediate body 11 . The side surface of the intermediate body 11 smoothly transitions with the side surface of the end body 12 with its curved surface. With this design, the overall strength of the traction beam 10 is high and can fully meet the force requirements.

In the scheme shown in the figure, the side surface of the intermediate body 11 is provided with a concave first curved surface portion a1 and an external convex second curved surface portion a2, so that the side surface of the intermediate body 11 is substantially "S" shaped. The side surface of the intermediate body 11 smoothly transitions with the first curved portion a1 and the side surface of the end body 12 at one end, and smoothly transitions with the second curved portion a2 and the side surface of the end body 12 at the other end. This design can further enhance the strength and bearing capacity of the intermediate body 11 .

The pulling beam 10 is also provided with a tie rod hole 124 , and the tie rod hole 124 is arranged on the end body 12 . The end body 12 includes a main body portion 121 , and further includes a connecting sleeve 123 . The connecting sleeve 123 is connected to one end of the main body portion 121 away from the intermediate body 11 with its circumferential surface. In the figure, each end body 12 is provided with two tie rod holes 124, one tie rod hole 124 is provided on the main body portion 121, the other tie rod hole 124 is the inner hole of the connecting sleeve 123, and the axes of the two tie rod holes 124 are along the The width direction of the traction beam 10 (which is also the longitudinal direction of the rail vehicle) extends, and the two tie rod holes 124 are arranged along the length direction of the traction beam 10 (which is also the transverse direction of the rail vehicle). Since the tie rod holes 124 are arranged in the lateral direction, the thickness of the traction beam 10 does not need to be set too thick, so it will not occupy too much vertical installation space.

The cross-sectional area of the main body portion 121 is reduced along the longitudinal direction of the traction beam 10 , and the main body portion 121 is wedge-shaped as a whole. The main body portion 121 is connected to the intermediate body 11 at one end with a large cross-sectional area. Specifically, the distance between the two side surfaces of the main body portion 121 can be reduced along the length direction of the traction beam 10 and/or the distance between the top surface and the bottom surface of the main body portion 121 can be reduced along the length direction of the traction beam 10 . The main body portion 121 of this structure facilitates the reduction of the weight of the traction beam 10 .

The side surface of the main body portion 121 and the side surface of the intermediate body 11 smoothly transition. In the illustrated scheme, one side surface of the main body 121 and the first curved surface portion a1 of one side surface of the intermediate body 11 smoothly transition, and the other side surface of the main body 121 and the second curved surface of the other side surface of the intermediate body 11 Section a2 smooth transition. Such a design can further enhance the overall strength of the traction beam 10 .

Specifically, a side surface of the main body portion 121 can be partially recessed to form a notch groove 122, and the notch groove 122 penetrates to the end face of the main body portion 121 away from the intermediate body 11 and the top and bottom surfaces of the main body portion 121. The notch groove 122 The side wall c1 and the end wall c2 smoothly transition. In this way, the weight of the traction beam 10 can be further reduced, and the strength and bearing capacity of the end body 12 will not be greatly affected, and the strength and bearing capacity of the end body 12 can still be guaranteed to meet the requirements.

A lifting stop 13 may also be integrated on the traction beam 10 , and a connecting hole may be provided on the lifting stop 13 so as to connect the adjusting pad 14 . During the lifting process, adjusting pads 14 with different thicknesses can be connected to the lifting stop 13 as required. In the solution shown in the figure, the lifting stopper 13 is integrated on the side of the intermediate body 11 , located on the side of the weight reduction hole of the intermediate body 11 , which can further enhance the strength of the intermediate body 11 in addition to the stop function.

As shown in FIG. 2 , the pulling device 100 further includes a center pin 30 , a center pin sleeve 20 , two pulling rods (not shown in the figure), an elastic snap ring 40 and a fastening component.

The center pin sleeve 20 is installed in the pin sleeve hole 111 of the traction beam 10, the bottom end of the center pin sleeve 20 abuts on the stepped surface 113 of the pin sleeve hole 111, and the elastic snap ring 40 is installed in the annular groove 112 of the traction beam 10, The top end of the center pin sleeve 20 abuts on the elastic snap ring 40 , and the elastic snap ring 40 cooperates with the stepped surface 113 to fix the axial position of the center pin sleeve 20 .

One pulling rod is connected to the pulling rod hole 124 at one end of the pulling beam 10 through a fastener, and the other pulling pulling rod is connected to the pulling rod hole 124 at the other end of the pulling beam 10 through a fastener, and the two pulling pulling rods are respectively located in the pulling beam 10. on both sides.

The center pin 30 is installed in the inner hole of the center pin sleeve 20 and fastened together with the center pin sleeve 20 by a fastening assembly.

The center pin 30 includes a tapered portion provided with an internally threaded hole. The inner hole of the center pin sleeve 20 is a tapered hole adapted to the tapered portion. The tapered portion protrudes into the tapered hole, and the outer peripheral surface of the tapered portion is in fitting contact with the hole wall of the tapered hole.

The fastening assembly includes bolts 50 , glands 60 and spacers 70 . The bolt 50 passes through the gland 60 and is screwed into the inner threaded hole of the conical part. Under the action of the tightening force of the bolt 50, the gland 60 exerts a pressing force towards the top side to the center pin sleeve 20, and the conical part tightly presses against the top side. On the hole wall of the tapered hole, the fixation of the central pin 30 is thus achieved.

To sum up, the traction beam 10 and the traction device 100 provided by the present application have light weight and high structural strength, and can meet the bearing requirements.

The traction beam and the traction device of the rail train provided by the present application have been introduced in detail above. Specific examples are used herein to illustrate the principles and implementations of the present application, and the descriptions of the above embodiments are only used to help understand the methods and core ideas of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present application, several improvements and modifications can also be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

A traction beam for rail trains, characterized in that the traction beam (10) includes an intermediate body (11) and two end bodies (12) disposed at both ends of the intermediate body (11), the intermediate body (11) There is a pin sleeve hole (111) for installing the central pin sleeve (20), the end body (12) is provided with a pull rod hole (124) for connecting the pulling rod, and the end body (12) includes a cross-section A main body portion (121) whose area is reduced along the length direction of the traction beam (10), the main body portion (121) is connected to the intermediate body (11) at one end with a large cross-sectional area, and the intermediate body (11) A curved surface portion is provided on the side surface of the intermediate body (11), and the curved surface portion of the side surface of the intermediate body (11) smoothly transitions with the side surface of the main body portion (121).
The traction beam of the rail train according to claim 1, characterized in that, a concave first curved surface portion (a1) and an external convex second curved surface portion (a2) are provided on the side surface of the intermediate body (11). , the side surface of the intermediate body (11) smoothly transitions with its first curved surface portion (a1) and the side surface of the main body portion (121) at one end, and its second curved surface portion (a2) and the main body at the other end The side surface of the main body part (121) smoothly transitions; the side surface of the main body part (121) and the first curved surface part (a1) of the side surface of the intermediate body (11) smoothly transition, the main body part (121) The other side surface of the intermediate body (11) smoothly transitions with the second curved surface portion (a2) of the other side surface of the intermediate body (11).
The traction beam of a rail train according to claim 1, wherein the intermediate body (11) is provided with a first weight reduction hole (114) and a second weight reduction hole (115), and the first weight reduction hole (115) is provided on the intermediate body (11). The weight hole (114) is arranged close to the pin sleeve hole (111), the second weight reduction hole (115) is arranged close to the end body (12), the first weight reduction hole (114) and the first weight reduction hole (114) and the A reinforcing rib (116) is formed between the two weight-reducing holes (115).
The traction beam of a rail train according to claim 1, wherein a side surface of the main body part (121) is partially recessed to form a notch groove (122), and the notch groove (122) penetrates to the main body One end surface of the part (121) away from the intermediate body (11) and the top surface and bottom surface of the main body part (121), the side wall (c1) and the end wall (c2) of the notch groove (122) Smooth transitions.
The traction beam of a rail train according to claim 1, wherein the end body (12) further comprises a connecting sleeve (123), and the connecting sleeve (123) is connected to the main body portion with its circumferential surface (121) One end away from the intermediate body (11), the end body (12) is provided with two tie rod holes (124), one is provided on the main body (121), and the other is the The inner hole of the connecting sleeve (123).
The traction beam of the rail train according to claim 5, characterized in that, the two tie rod holes (124) are arranged along the length direction of the traction beam (10).
The traction beam of a rail train according to claim 1, characterized in that, a lifting stop (13) is provided on the traction beam (10), and a lifting stop (13) is provided for connection adjustment The connection hole of the spacer (14).
The traction beam of a rail train according to any one of claims 1-7, characterized in that, the traction beam (10) is a center-symmetric structure, and the center of symmetry is the middle of the central axis of the pin sleeve hole (111). The hole wall of the pin sleeve hole (111) is provided with an annular groove (112) and a stepped surface (113) facing the annular groove (112).
The traction device is characterized in that it comprises a traction beam, a central pin sleeve (20), a central pin (30), two traction rods, an elastic snap ring (40) and a fastening component, and the traction beam is described in claim 8 the traction beam (10); the center pin sleeve (20) is installed in the pin sleeve hole (111), the elastic snap ring (40) is installed in the annular groove (112), the center pin One end of the sleeve (20) abuts on the step surface (113), the other end abuts on the elastic snap ring (40), and the center pin (30) is installed in the center pin sleeve (20) The two pulling rods are respectively connected to the pulling rod holes (124) at both ends of the pulling beam (10).
The traction device according to claim 9, wherein the fastening component comprises a bolt (50), a gland (60) and a washer (70), and the center pin (30) has a hole provided with an internal thread The inner hole of the central pin sleeve (20) is a tapered hole, the tapered portion extends into the tapered hole, and the bolt (50) passes through the gland (60). ) is screwed into the inner threaded hole, under the action of the tightening force of the bolt (50), the gland (60) is in close contact with the central pin sleeve (20), and the tapered portion is in close contact with the center pin sleeve (20). The hole walls of the tapered holes are closely abutted.