Integral lifting device for car body and bogie

Abstract

The present application relates to the technical field of locomotive production, and particularly relates to a whole lifting device for a car body and a bogie. The whole lifting device for the car body and the bogie comprises lifting mechanisms symmetrically arranged on both sides of the bogie, and the lifting mechanism comprises: a first connecting assembly comprising a car body underframe lifting beam, a first lifting piece and a connecting bottom box; and a second connecting assembly comprising a framework lifting seat and a second lifting piece. The application provides a whole lifting device for the car body and the bogie, and the assembly mode is simple in structure and convenient to install. The whole lifting device can solve the problem that the single-axle bogie structure is compact and not conducive to arrangement of the lifting mechanism, and can meet the requirement of the whole lifting of the rail vehicle. The lifting device can be directly lifted without additional equipment or tools during the lifting process, thereby simplifying the process, improving the production efficiency, being low in economic cost, and being convenient for inspection and maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail vehicle technology, in particular to a whole lifting device for a car body and a bogie. BACKGROUND

[0002] In the whole life cycle of rail vehicles in daily use, from production assembly, organization transportation to maintenance and repair, the car body and the bogie usually need to be lifted as a whole, and it is generally required to complete the work without relying on additional tooling equipment during lifting. The whole lifting structure can ensure reliable connection of the car body and the bogie, and uniform distribution of weight to the structural members on the car, and is safe, reliable, simple and fast. At present, in locomotives and other rail vehicles, the whole lifting device for the car body and the bogie has chain type, center pin nesting type and other schemes. The chain type scheme sets lifting seats on the side beams of the car body and the bogie frame respectively and uses chains to connect, and the center pin nesting type scheme is generally integrated on the central traction device, and the car body rotates the center pin to vertically limit it after passing through the traction beam hole of the bogie from top to bottom.

[0003] However, the above lifting device is mainly applied to the connection between the two-axle bogie and the car body, utilizes the structural space between the two sets of wheelsets, and realizes the arrangement of the connecting mechanism through the bolster or the central traction device. However, for the single-axle bogie, the frame generally adopts a Chinese character structure, and the wheelset is arranged at the middle position of the frame, occupying the layout space of the traditional bogie bolster or central traction device, so the existing lifting device cannot be applied. Therefore, a new lifting device connecting the car body and the single-axle bogie needs to be designed to realize the whole lifting function. SUMMARY

[0004] The present application provides a whole lifting device for a car body and a bogie, which solves the technical problem that the lifting device in the related art cannot be applied to a single-axle bogie.

[0005] The present application provides a whole lifting device for a car body and a bogie, which includes lifting mechanisms symmetrically arranged on both sides of the bogie, and the lifting mechanism includes:

[0006] A first connecting assembly includes a car body underframe lifting beam, a first lifting piece and a connecting bottom box. The car body underframe lifting beam is used to be connected with the car body underframe. The connecting bottom box is arranged on the top surface of the side beam of the bogie frame. The first lifting piece has a first end and a second end arranged opposite in the vertical direction. The first end of the first lifting piece is connected with the car body underframe lifting beam, and the second end is arranged in the connecting bottom box. The second end of the first lifting piece is movably arranged in the inner cavity of the connecting bottom box.

[0007] The second connecting assembly comprises a frame hanger and a second lifting piece, the frame hanger is arranged on the side wall of the side beam of the bogie, the bottom end of the second lifting piece is connected with the axle box end cover of the bogie, the top end of the second lifting piece is provided with an abutting surface, at least part of the frame hanger is arranged below the abutting surface and a gap is arranged between the abutting surface and the frame hanger.

[0008] In some embodiments, the gap height between the second end of the first lifting piece and the bottom surface of the connecting bottom box inner cavity is greater than the maximum compression amount of the side bearing of the bogie.

[0009] In some embodiments, a gap is also arranged between the second end of the first lifting piece and the two sides of the connecting bottom box inner wall along the vehicle body width direction.

[0010] In some embodiments, the first lifting piece comprises a vertical rod and first and second horizontal rods arranged in vertical opposition, the vertical rod is arranged between the first and second horizontal rods, the first horizontal rod is configured as the first end of the first lifting piece, and the second horizontal rod is configured as the second end of the first lifting piece.

[0011] In some embodiments, a rectangular assembly hole is opened at the top of the connecting bottom box, the length of the rectangular assembly hole is greater than the length of the second horizontal rod, the width of the rectangular assembly hole is greater than the width of the second horizontal rod, and the width of the rectangular assembly hole is less than the length of the second horizontal rod.

[0012] In some embodiments, the gap length between at least part of the frame hanger and the abutting surface of the second lifting piece is H-h, wherein H is a primary axle box spring compression amount, and h is a pre-pressing installation requirement length of a primary axle box spring.

[0013] In some embodiments, the second lifting piece comprises a third horizontal rod and two oppositely arranged connecting rods, the third horizontal rod is arranged between the top ends of the two connecting rods, and the side of the third horizontal rod facing the axle box end cover is the abutting surface of the second lifting piece.

[0014] In some embodiments, the frame hanger comprises first and second connecting plates arranged perpendicularly to each other, the first connecting plate is arranged on the side wall of the side beam of the bogie, and the second connecting plate is arranged below the third horizontal rod.

[0015] In some embodiments, a concave surface is arranged on the second connecting plate at a position corresponding to the abutting surface.

[0016] In some embodiments, the top of the axle box end cover is provided with a connecting block, the bottom of the two connecting rods is provided with a connecting part, the connecting block is arranged between the two connecting parts, and the connecting block and the two connecting parts are connected by bolts.

[0017] The application has the following advantages:

[0018] The overall lifting device for the car body and the bogie provided by the application is characterized in that, during the lifting process, the first end of the first lifting piece is connected to the car body through the car body underframe lifting beam, and under the action of gravity, the vertical gap between the second end of the first lifting piece and the top surface of the inner wall of the connecting bottom box gradually decreases, and when the vertical gap is zero, the second end of the first lifting piece starts to contact and bear stress with the top surface of the inner wall of the connecting bottom box, that is, the connecting bottom boxes on both sides of the bogie are connected to the car body underframe through the first lifting piece to become an integral force state, so that the bogie frame and the car body are connected as a whole; meanwhile, during the lifting process, the frame is lifted upward due to the reduction of the load on the axle box spring, so as to drive the frame lifting seat to be lifted upward, and since at least part of the frame lifting seat is arranged below the abutting surface of the second lifting piece and is provided with a gap between the abutting surface, the gap between the abutting surface gradually decreases during the lifting process of the frame lifting seat, and when the gap is zero, the abutting surface starts to contact and bear stress, and since the bottom end of the second lifting piece is connected to the axle box end cover of the bogie, the frame lifting seats on both sides of the bogie are connected to the axle box and the wheel set through the second lifting piece to become an integral force state, so that the bogie frame and the axle box and the wheel set are connected as a whole, thereby meeting the overall lifting requirements of the car body and the bogie. Since the lifting mechanism is arranged on both sides of the bogie, the space in the middle of the bogie is not needed, so that the lifting of the single-axle bogie can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application.

[0020] Figure 1 The overall lifting device for the car body and the bogie provided by the present embodiment and the assembly schematic diagram of the bogie;

[0021] Figure 2 The front view of Figure 1 ;

[0022] Figure 3 The A-A sectional view of Figure 2 ;

[0023] Figure 4 The enlarged view of Figure 1 ;

[0024] Figure 5 This is a structural schematic diagram of the second lifting component provided in this embodiment;

[0025] Figure 6 This is a structural schematic diagram of the frame hanger provided in this embodiment;

[0026] Figure 7 This is a schematic diagram of the structure of the axle box end cover provided in this embodiment.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-Bogie, 11-Frame, 12-Wheelset, 13-Axlebox, 14-Axlebox end cap, 15-Axlebox spring, 141-Connecting block, 10-Lifting mechanism, 100-First connecting assembly, 110-Car body underframe lifting beam, 120-First lifting component, 121-First crossbar, 122-Second crossbar, 123-Vertical bar, 130-Connecting base box, 131-Rectangular assembly hole, 200-Second connecting assembly, 210-Frame lifting seat, 211-First connecting plate, 212-Second connecting plate, 220-Second lifting component, 221-Third crossbar, 222-Connecting rod, 2121-Concave surface, 2211-Abutting surface, 2221-Connecting part. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Figure 1 This is a schematic diagram of the overall lifting device for the car body and bogie provided in this embodiment, and the assembly of the bogie. Figure 2 for Figure 1 The main view, combined with Figure 1 and Figure 2 This application provides an overall lifting device for a car body and a bogie. The bogie 1 includes a frame 11, wheelsets 12, axle boxes 13, and axle box end caps 14. The axle boxes 13 are fitted onto both ends of the wheelsets 12. Each axle box 13 can be connected to an axle box end cap 14 by bolts. The structure of the bogie 1 can be referred to the prior art, and will not be described in detail here.

[0031] Figure 3 for Figure 2 AA section view, Figure 4 for Figure 1 A magnified view of the part, combined with Figures 1-4The lifting device includes two lifting mechanisms 10, which are symmetrically arranged on both sides of the bogie 1, i.e., the lifting is performed by using a double support point, so that the force is uniform and reliable. The lifting mechanism 10 includes a first connecting assembly 100 and a second connecting assembly 200. The first connecting assembly 100 includes a vehicle body underframe lifting beam 110, a first lifting piece 120, and a connecting bottom box 130. The vehicle body underframe lifting beam 110 is used to be connected with the vehicle body underframe. Specifically, the vehicle body underframe lifting beam 110 is welded on the vehicle body underframe. The vehicle body underframe lifting beam 110 is rigidly connected with the first lifting piece 120 by using bolts. The connecting bottom box 130 is arranged on the top surface of the side beam of the frame 11 of the bogie 1. The first lifting piece 120 has a first end and a second end which are oppositely arranged in the vertical direction. The first end of the first lifting piece 120 is connected with the vehicle body underframe lifting beam 110. The second end is arranged in the connecting bottom box 130. The second end of the first lifting piece 120 is movably arranged in the inner cavity of the connecting bottom box 130.

[0032] The second connecting assembly 200 includes a frame lifting seat 210 and a second lifting piece 220. Figure 5 The structure diagram of the second lifting piece provided in the embodiment is combined with the description of the second connecting assembly 200 to further illustrate the structure of the second lifting piece. Figures 1-5 The frame lifting seat 210 is arranged on the side wall of the side beam of the frame 11 of the bogie 1. The bottom end of the second lifting piece 220 is connected with the axle box end cover of the bogie 1. The top end of the second lifting piece 220 is provided with an abutting surface 2211. At least part of the frame lifting seat 210 is arranged below the abutting surface 2211 and is provided with a gap between the abutting surface 2211.

[0033] The overall lifting device for the car body and the bogie 1 provided by the embodiment of the application, the first end of the first lifting piece 120 is connected with the car body through the car body underframe lifting beam 110, and gaps are arranged between the second end of the first lifting piece 120 and the top surface and the bottom surface of the inner cavity of the connecting bottom box 130 when the vehicle is running, so as to reserve a vertical floating action space of the car body. In the lifting process, under the action of gravity, the vertical gap between the second end of the first lifting piece 120 and the top surface of the inner wall of the connecting bottom box 130 gradually decreases, and when the vertical gap is zero, the second end of the first lifting piece 120 starts to contact and bear stress with the top surface of the inner wall of the connecting bottom box 130. In this way, the second end of the first lifting piece 120 is clamped to the top surface of the inner wall of the connecting bottom box 130, that is, the connecting bottom boxes 130 on both sides of the bogie 1 are connected with the car body underframe through the first lifting piece 120 to become an integral force state, so that the bogie frame 11 and the car body are connected as a whole. At the same time, in the lifting process, the frame 11 will rebound upward and rise as the axle box spring 15 is loaded and reduced, so as to drive the frame lifting seat 210 to rise. Since at least part of the frame lifting seat 210 is arranged below the abutting surface 2211 of the second lifting piece 220 and a gap is arranged between the abutting surface 2211, the gap between the abutting surface 2211 and the frame lifting seat 210 will gradually decrease in the process of rising of the frame lifting seat 210, and until the gap is zero, the abutting surface 2211 and the frame lifting seat 210 start to contact and bear stress. Since the bottom end of the second lifting piece 220 is connected with the axle box end cover of the bogie 1, the frame lifting seats 210 on both sides of the bogie 1 are connected with the axle box 13 and the wheel set 12 through the second lifting piece 220 to become an integral force state, so that the bogie frame 11 and the axle box 13 and the wheel set 12 are connected as a whole, and finally the whole vehicle is connected as a whole.

[0034] That is, the overall lifting device for the car body and the bogie 1 provided by the embodiment of the application, the first connecting assembly 100 is used for connecting the car body and the single-axle bogie frame 11, and the second connecting assembly 200 is used for connecting the frame 11 and the axle box 13 and the wheel set 12, so that rigid connection of the bogie frame 11 and the car body, the frame 11 and the wheel set 12 and the axle box 13 is realized when the car body and the bogie 1 are lifted as a whole, the lifting idle stroke of the bogie frame 11 and the wheel set 12 and the axle box 13 is reduced when the car body and the bogie 1 are lifted as a whole, so that the risk that the key components such as the primary axle box spring 15 and the oil pressure shock absorber exceed the maximum lifting stroke can be reduced, and the operation safety of the railway vehicle is ensured. Since the lifting mechanism 10 is arranged on both sides of the bogie 1, the space in the middle of the bogie 1 is not needed, so that the lifting of the single-axle bogie 1 can be applied. Of course, the lifting device of the embodiment of the application can also be used for the multi-axle bogie 1.

[0035] Furthermore, in this embodiment, the gap height between the second end of the first lifting member 120 and the bottom surface of the inner cavity of the connecting base box 130 is greater than the maximum compression of the side bearing of the bogie 1, and a gap is also provided between the second end of the first lifting member 120 and the two sides of the inner wall of the connecting base box 130 along the width direction of the vehicle body, so as to prevent the vehicle body from laterally shifting beyond the limit when passing through the curve, and play a role in safety stopping.

[0036] Furthermore, the first lifting member 120 includes a vertical rod 123 and a first horizontal rod 121 and a second horizontal rod 122 arranged vertically opposite each other. The vertical rod 123 is arranged between the first horizontal rod 121 and the second horizontal rod 122 to form an "I" shape. Obviously, the first horizontal rod 121, the second horizontal rod 122 and the vertical rod 123 are all strip-shaped cuboids. The first horizontal rod 121 is configured as the first end of the first lifting member 120 and the second horizontal rod 122 is configured as the second end of the first lifting member 120.

[0037] Furthermore, a rectangular mounting hole 131 is provided on the top of the connecting base box 130. The length of the rectangular mounting hole 131 is greater than the length and width of the second crossbar 122, and the width of the rectangular mounting hole 131 is less than the length of the second crossbar 122. Thus, when the long side of the second crossbar 122 is aligned with the long side of the rectangular mounting hole 131 and the short side is aligned with the short side of the rectangular mounting hole 131, the second crossbar 122 can extend into the rectangular mounting hole 131 of the connecting base box 130. Similarly, a rectangular mounting hole is also provided on the vehicle body frame suspension beam 110. The length of the rectangular mounting hole of the vehicle body frame suspension beam 110 is greater than the length and width of the first crossbar 121, and the width of the rectangular mounting hole 131 is less than the length of the first crossbar 121.

[0038] In this way, when assembling the first lifting component 120, the first crossbar 121 is first inserted into the rectangular assembly hole 131 on the chassis beam 110, and the second crossbar 122 is inserted into the rectangular assembly hole 131 of the connecting box 130. Then, the first lifting component 120 is rotated 90°, so that the first crossbar 121 can be snapped onto the chassis beam 110. There are gaps between the second crossbar 122 and the top and bottom surfaces of the inner cavity of the connecting box 130. At this time, bolts are used to achieve a rigid connection between the first crossbar 121 and the chassis beam 110. During the lifting process, the gap between the second crossbar 122 and the top surface of the inner cavity of the connecting box 130 gradually decreases. Since the width of the rectangular assembly hole 131 of the connecting box 130 is less than the length of the second crossbar 122, the second crossbar 122 will not detach from the connecting box 130.

[0039] Further, the gap length between the abutting surface 2211 of the second lifting piece 220 and the at least partial frame lifting seat 210 is H-h, wherein H is a compression amount of the primary axle box spring 15, and h is a pre-pressing installation requirement length of the primary axle box spring 15. That is, during the lifting process, after the abutting surface 2211 of the second lifting piece 220 is in contact with the at least partial frame lifting seat 210 under force, the primary axle box spring 15 still has a compression amount h that is not completely released, and the rebound force can provide a pre-pressing force, so that the wheel set 12 of the axle box 13 can be tightly attached to the frame 11, thereby reducing the shaking during the lifting process and achieving the effect of safe operation.

[0040] In combination Figure 5 , the second lifting piece 220 includes a third cross bar 221 and two oppositely arranged connecting rods 222, the third cross bar 221 is arranged between the top ends of the two connecting rods 222, and the side of the third cross bar 221 facing the axle box end cover is the abutting surface 2211 of the second lifting piece 220.

[0041] Figure 6 The structure schematic diagram of the frame lifting seat provided in the embodiment, in combination with Figure 4 and Figure 6 , the frame lifting seat 210 includes a first connecting plate 211 and a second connecting plate 212 arranged perpendicularly to each other, the first connecting plate 211 is arranged on the side wall of the side beam of the frame 11 of the bogie 1, and the second connecting plate 212 is arranged below the third cross bar 221. Obviously, the first connecting plate 211 is arranged vertically, and the second connecting plate 212 is arranged horizontally, the second connecting plate 212 is arranged below the abutting surface 2211 of the second lifting piece 220, and the gap length between the second connecting plate 212 and the abutting surface 2211 of the second lifting piece 220 is H-h. Specifically, the second connecting plate 212 is arranged at the middle part of the first connecting plate 211.

[0042] Preferably, the second connecting plate 212 is provided with a concave surface 2121 at a position corresponding to the abutting surface 2211, that is, when the gap between the second connecting plate 212 and the abutting surface 2211 is zero, the abutting surface 2211 is buckled on the second connecting plate 212, so that the second lifting piece 220 can be prevented from falling off the frame lifting seat 210.

[0043] Figure 7 The structure schematic diagram of the axle box end cover provided in the embodiment, in combination with Figure 4 and Figure 7The top of the axle box end cover is provided with a connecting block 141, the bottom of the two connecting rods 222 is provided with a connecting part 2221, the connecting block 141 is arranged between the two connecting parts 2221, and the connecting block 141 and the two connecting parts 2221 are connected through bolts, so as to realize the rigid connection of the second lifting part 220 and the axle box end cover. In this way, when assembling the second lifting part 220, the connecting block 141 of the axle box end cover is arranged between the two connecting parts 2221 of the second lifting part 220, and is connected through bolts, at this time, the abutting surface 2211 of the second lifting part 220 and the second connecting plate 212 have a gap.

[0044] When the whole vehicle is lifted, the force transmission is: lifting tool→first connecting assembly 100→second connecting assembly 200→wheel set 12. Specifically: lifting tool→vehicle underframe→vehicle underframe lifting beam 110→first lifting part 120→connecting bottom box 130→frame 11→frame lifting seat 210→second lifting part 220→axle box end cover 14→axle box 13→wheel set 12. Through the above connection, the whole vehicle and bogie 1 are lifted, this assembly method is simple in structure and convenient to install, which can not only solve the problem that the single-axle bogie 1 is compact in structure and not conducive to arranging the lifting mechanism, but also meet the requirements of the whole rail vehicle lifting, and the lifting process does not require additional equipment or tools, which simplifies the process, improves the production efficiency, is low in economic cost, and is convenient for inspection and maintenance.

[0045] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the changes and modifications falling within the scope of the present application.

[0046] Obviously, various modifications and changes can be made to the present application by those skilled in the art without departing from the spirit and scope of the present application. Thus, it is intended that the present application cover the modifications and changes as falling within the scope of the claims and their equivalents.

Claims

1. A lifting device for an integral car body and bogie, characterized in that, The lifting mechanism includes symmetrically arranged lifting mechanisms on both sides of the bogie, the lifting mechanism comprising: The first connecting assembly includes a chassis frame lifting beam, a first lifting member, and a connecting box. The chassis frame lifting beam is used to connect to the chassis frame. The connecting box is disposed on the top surface of the side beam of the bogie frame. The first lifting member has a first end and a second end arranged vertically opposite to each other. The first end of the first lifting member is connected to the chassis frame lifting beam, and the second end is disposed in the connecting box. The second end of the first lifting member is movably disposed in the inner cavity of the connecting box. The second connecting component includes a frame hanger and a second lifting member. The frame hanger is disposed on the side wall of the frame side beam of the bogie. The bottom end of the second lifting member is connected to the axle box end cover of the bogie. The top end of the second lifting member is provided with an abutment surface. At least part of the frame hanger is disposed below the abutment surface and a gap is provided between it and the abutment surface. Wherein, the gap length between at least part of the frame hanger and the contact surface of the second lifting member is Hh, where H is the compression amount of the primary axle box spring and h is the pre-compression installation requirement length of the primary axle box spring.

2. The integral lifting device for a car body and bogie as described in claim 1, characterized in that, The gap height between the second end of the first lifting component and the bottom surface of the inner cavity of the connecting base box is greater than the maximum compression of the side bearing of the bogie.

3. The integral lifting device for a car body and bogie as described in claim 1, characterized in that, A gap is also provided between the second end of the first lifting component and the two sides of the inner wall of the connecting box along the width direction of the vehicle body.

4. The integral lifting device for a car body and bogie as described in claim 1, characterized in that, The first lifting member includes a vertical rod and a first horizontal rod and a second horizontal rod arranged vertically opposite each other. The vertical rod is disposed between the first horizontal rod and the second horizontal rod. The first horizontal rod is configured as the first end of the first lifting member, and the second horizontal rod is configured as the second end of the first lifting member.

5. The integral lifting device for a car body and bogie as described in claim 4, characterized in that, The top of the connecting base box has a rectangular assembly hole. The length of the rectangular assembly hole is greater than the length of the second crossbar, the width is greater than the width of the second crossbar, and the width of the rectangular assembly hole is less than the length of the second crossbar.

6. The integral lifting device for a car body and bogie as described in claim 1, characterized in that, The second lifting component includes a third crossbar and two oppositely arranged connecting rods. The third crossbar is located between the top ends of the two connecting rods, and the side of the third crossbar facing the axle box end cover is the contact surface of the second lifting component.

7. The integral lifting device for a car body and bogie as described in claim 6, characterized in that, The frame hanger includes a first connecting plate and a second connecting plate arranged perpendicularly to each other. The first connecting plate is disposed on the side wall of the frame side beam of the bogie, and the second connecting plate is disposed below the third crossbar.

8. The integral lifting device for a car body and bogie as described in claim 7, characterized in that, The second connecting plate has a concave surface at a position corresponding to the abutment surface.

9. The integral lifting device for a car body and bogie as described in claim 6, characterized in that, The top of the axle box end cover is provided with a connecting block, and the bottom of the two connecting rods is provided with a connecting part. The connecting block is disposed between the two connecting parts, and the connecting block is connected to the two connecting parts by bolts.

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