Integral lifting device

Abstract

The invention discloses an integral hoisting device, which relates to the technical field of rail transit bogies, and comprises a traction seat arranged between two cross beam support tubes, a group of assembly holes arranged at the lower end part of the traction seat; the whole lifting seat plate is in a T shape, the two ends of the lower end portion of the lifting seat plate are located under the two cross beam supporting pipes respectively, a plurality of sets of lifting installation holes are sequentially formed in the upper end portion of the lifting seat plate from top to bottom, and the screw sequentially penetrates through one set of lifting installation holes and the assembly holes to be connected with the lifting seat plate and the traction seat. The integral hoisting device solves the problems that an existing integral hoisting device is relatively complex in installation and cannot adapt to a compact design space between a bogie and a vehicle body, and in the subsequent repair and maintenance operation, the whole repair, disassembly and installation are complex and difficult, and the maintenance efficiency is high. The maintenance cost such as train maintenance time cost, manpower cost and material cost is high.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit bogies, and in particular to an integral lifting device. Background Art

[0002] Currently, the integral lifting devices used between the car body and the bogie are mainly in two forms: welding and integral casting. Figure 1 As shown, the prior art discloses an integral lifting device, in which a lifting seat is welded to a beam support tube 1 by welding, and then connected using a steel wire rope 12, a chain or a lifting nut.

[0003] 1. The above-mentioned integral lifting device is relatively complicated to install, and the integral lifting seat 14 is welded on the two crossbeam support tubes 1, which occupies a large space along the axial direction of the crossbeam support tube 1 and cannot adapt to the compact design space between the bogie and the car body. Moreover, since the span between the two crossbeam support tubes 1 is small, the car body and the bogie need to be disassembled or assembled during subsequent repair and maintenance operations. The above-mentioned integral lifting device involves the disassembly and installation of the scheduling height adjustment device, the anti-roll device, the secondary spring, and the car body floor height adjustment. According to relevant technical requirements, all disassembled fasteners need to be replaced. The entire repair, disassembly and installation are complicated and difficult, and the maintenance costs such as train maintenance time cost, labor cost, and material cost are high. 2. The above-mentioned integral lifting device uses a steel wire rope 12 or chain formed by spirally twisting multiple steel wires to pull up the crossbeam support tube 1. Under the vertical load working state, it is easy to swing slightly due to vibration and impact, resulting in uneven force, internal wear of the steel wire rope 12 or chain, contact wear between the steel wire rope 12 or chain and the frame or traction seat 2, and stress concentration at the rope end fixing point and the chain link connection, resulting in weak bearing capacity of the steel wire rope 12 or chain. In addition, during the operation of the train, the steel wire rope 12 may swing and rub against the traction seat 2 to generate noise, affecting the passengers' riding experience. Third, the steel wire rope 12 or chain in the above-mentioned integral lifting device will undergo significant deformation during lifting, requiring a large preload force to be applied by adding or removing integral lifting spacers 13. Furthermore, when the clearance between the bogie and the car body changes, the height position of the integral lifting seat 14 relative to the traction seat 2 needs to be adjusted by adding or removing integral lifting spacers 13 to adapt to the clearance between the bogie and the car body. This makes the entire pre-lifting preparation and adjustment process relatively complicated. Therefore, an integral lifting device is proposed to address the above-mentioned problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an integral lifting device, which solves the technical problems that the existing integral lifting device is relatively complicated to install, occupies a large space in the axial direction of the beam support tube, cannot adapt to the compact design space between the bogie and the car body, and is complicated and difficult to install during subsequent repair and maintenance operations, resulting in high maintenance costs such as train maintenance time cost, labor cost, material cost, etc.

[0005] To achieve the above object, the present invention provides an integral lifting device, comprising:

[0006] A fifth wheel is provided between the two crossbeam support tubes, wherein a group of assembly holes are provided at the lower end of the fifth wheel, and the axis direction of the assembly holes is consistent with the axis direction of the two crossbeam support tubes, and the fifth wheel is used to connect to the vehicle body;

[0007] The lifting seat plate is T-shaped as a whole, and the two ends of the lower end of the lifting seat plate are respectively located directly below the two beam support tubes. The upper end of the lifting seat plate is provided with several groups of lifting mounting holes from top to bottom. The axial direction of the lifting mounting holes is consistent with the axial direction of the two beam support tubes. The screw passes through one group of the lifting mounting holes and the assembly hole in sequence to connect the lifting seat plate and the traction seat.

[0008] Preferably, three groups of lifting mounting holes are equidistantly arranged on the upper end portion of the lifting seat plate.

[0009] Preferably, a first safety pad is sleeved on the first end of the screw rod, and the first safety pad fits the side surface of the lifting seat plate.

[0010] Preferably, the second end of the screw is threadedly connected to the nut, and the second end of the screw is sleeved with a second safety pad, one side of the second safety pad is in contact with the side of the traction seat, and the other side of the second safety pad is in contact with the side of the nut.

[0011] Preferably, a pin hole is provided at the second end of the screw rod, and a cotter pin is passed through the pin hole.

[0012] Preferably, an antenna mounting seat for mounting an antenna device is provided on the outer peripheral side surface of one of the beam support tubes.

[0013] Preferably, the bottom surface of the fifth wheel is provided with a traction rod component for providing traction or braking force to the fifth wheel.

[0014] Preferably, two transverse stop components are respectively provided at the two ends of the beam support tube, and the transverse stop components include: a mounting plate, which is V-shaped as a whole, the lower end of the mounting plate is respectively connected to one of the beam support tubes, and the upper end of the mounting plate is connected to the stop component.

[0015] Preferably, the stopping member comprises: an assembly tube, the assembly tube is inserted into the upper end portion of the mounting plate, and a limiting top plate is provided at one end of the assembly tube close to the traction seat.

[0016] Preferably, a buffer gap is reserved between the two limiting top plates and the traction seat respectively.

[0017] Compared with the above background technology, the present invention provides an integrated lifting device with the following beneficial effects:

[0018] (1) In the present invention, the axial direction of the lifting installation hole and the axial direction of the assembly hole are respectively consistent with the axial direction of the two beam support tubes. The screw passes through one set of the lifting installation holes and the assembly holes to connect the lifting seat plate and the traction seat. The traction seat can lift the beam support tube through the lifting seat plate to complete the connection of the entire car body and the bogie. During subsequent repair and maintenance operations, the screw can be directly disassembled and assembled within the limited span between the two beam support tubes to complete the disassembly and assembly of the lifting seat plate. There is no need to disassemble or assemble the car body and the bogie. The disassembly and installation of the screw is simple and convenient, which is convenient for maintenance and effectively reduces the time cost, maintenance cost and manufacturing cost of train maintenance. On the other hand, the whole process no longer involves steel wire ropes, effectively avoids the phenomenon of noise generation, and improves the passenger riding experience. Moreover, the present invention does not involve the disassembly and installation of the scheduling height adjustment device, the anti-roll device, the two-spring, and the car body floor height adjustment. The traction seat can lift the beam support tube only through the lifting seat plate, which can achieve the lightweight of the entire lifting device and does not involve disassembly and installation problems, effectively reducing material costs.

[0019] (2) In the present invention, the lifting seat plate and the traction seat are connected and fixed by screws. Given the limited span of the crossbeam steel pipe and the installation space that restricts the diameter of the screw or wire rope, the screw has a better load-bearing effect than a whole lifting wire rope or chain made of multiple strands of steel wire twisted together. On the other hand, compared with the method of pulling up the crossbeam support pipe with a wire rope, under the same vertical load working condition, even if the train is subjected to vibration during operation, the wire rope will not swing as may be the case in the prior art. The force is more balanced, and the car body and bogie are safer and more stable throughout the entire train operation.

[0020] (3) The present invention can quickly adjust the height position of the lifting seat plate relative to the traction seat by adjusting the screw rod passing through each group of lifting installation holes and assembly holes at different heights, so as to quickly adapt to changes in wheel diameter caused by wheel wear, wheel turning operations, etc., and then quickly adapt to changes in the gap between the bogie and the car body, thereby ensuring the safety of car body lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A three-dimensional structural diagram of the overall lifting device provided by the prior art;

[0023] Figure 2 A three-dimensional structural diagram of an integral lifting device provided by an embodiment of the present invention;

[0024] Figure 3 A side view of an integral lifting device provided by an embodiment of the present invention;

[0025] Figure 4 for Figure 3 Schematic diagram of the cross section at A and A;

[0026] Figure 5 for Figure 4 Enlarged schematic diagram of point B in the middle.

[0027] Specifically, 1. Beam support tube; 2. Traction seat; 201. Assembly hole; 3. Screw; 4. Lifting seat plate; 401. Lifting mounting hole; 5. Horizontal stop component; 501. Mounting plate; 502. Stop member; 5021. Assembly tube; 5022. Limiting top plate; 6. Buffer gap; 7. First safety pad; 8. Second safety pad; 9. Split pin; 10. Traction rod component; 11. Antenna mounting seat; 12. Wire rope; 13. Lifting gasket; 14. Integral lifting seat. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0030] like Figure 2 and Figure 3As shown, to achieve the above purpose, the present invention provides an integral lifting device, comprising: a traction seat 2 and a lifting seat plate 4. Among them, two crossbeam support tubes 1 are provided on each bogie, and the traction seat 2 is used to support the car body.

[0031] The traction seat 2 is disposed between the two crossbeam support tubes 1. The lower end of the traction seat 2 is provided with a set of assembly holes 201. The upper end of the lifting seat plate 4 is provided with several sets of lifting installation holes 401, sequentially from top to bottom. The overall shape is T-shaped, and the two ends of the lower end of the lifting seat plate 4 are located directly below the two crossbeam support tubes 1. Moreover, due to the limited span and installation space between the two crossbeam support tubes 1, which restricts the diameter of the screw 3 or wire rope 12, the screw 3 has a better load-bearing effect than the integral lifting wire rope 12 or chain formed by spirally twisting multiple strands of steel wire. On the other hand, compared to the method of pulling the crossbeam support tube 1 with the wire rope 12, under the same vertical load working conditions, the car body and bogie will not experience the swinging phenomenon that may occur in the wire rope 12 in the prior art even if they are subjected to vibration during the entire train operation, and the force is more balanced. Moreover, the traction seat 2 lifts the crossbeam support tube 1 through the lifting seat plate 4 to complete the connection between the entire car body and the bogie. The entire process no longer involves the wire rope 12, effectively avoiding the generation of noise and improving the passenger riding experience.

[0032] In addition, the axial direction of the assembly hole 201 is consistent with the axial direction of the two crossbeam support tubes 1, and the axial direction of the lifting installation hole 401 is consistent with the axial direction of the two crossbeam support tubes 1. The screw rod 3 passes through one set of the lifting installation holes 401 and the assembly hole 201 to connect the lifting seat plate 4 and the traction seat 2. No deformation will occur during lifting. Moreover, during subsequent repair and maintenance operations, the screw rod 3 can be directly disassembled and assembled within the limited span between the two crossbeam support tubes 1 to complete the disassembly and assembly of the lifting seat plate 4, without the need to disassemble or assemble the car body and bogie. The disassembly and installation of the screw rod 3 is simple and convenient, facilitating maintenance, effectively reducing the time cost, maintenance cost, and manufacturing cost of train maintenance, and the entire preparation process before lifting is relatively simple.

[0033] It should be noted that the present invention does not involve the disassembly and installation of the scheduling height adjustment device, the anti-roll device, the secondary spring, and the vehicle floor height adjustment. The traction seat can lift the crossbeam support tube only through the lifting seat plate, which can achieve the lightweight of the overall lifting device and does not involve disassembly and installation issues, effectively reducing material costs.

[0034] When the gap between the bogie and the car body changes, the height position of the lifting seat plate 4 relative to the traction seat 2 can be quickly adjusted by adjusting the screw 3 through each group of lifting mounting holes 401 and assembly holes 201 at different heights, so as to quickly adapt to changes in wheel diameter caused by wheel wear, wheel turning operations, etc., and then quickly adapt to changes in the gap between the bogie and the car body, thereby ensuring the safety of car body lifting and making the entire adjustment process simpler.

[0035] Optionally, both the lifting and mounting holes 401 and the assembly holes 201 are through holes, that is, the lifting and mounting holes 401 and the assembly holes 201 are only used to pass the screw 3, thereby avoiding the risk of thread slippage.

[0036] In one embodiment of the present invention, three groups of lifting mounting holes 401 are equidistantly arranged on the upper end of the lifting seat plate 4. Specifically, each group of lifting mounting holes 401 consists of two lifting mounting holes 401 at the same height. Two screws 3 need to be passed through the two lifting mounting holes 401 and the corresponding assembly holes 201 in the same group at the same time to stably connect the lifting seat plate 4 and the traction seat 2.

[0037] like Figure 4 and Figure 5 As shown, a first safety pad 7 is sleeved on the first end of the screw 3. The first safety pad 7 fits the side of the lifting seat plate 4. The first safety pad 7 avoids direct rigid friction between the head of the screw 3 and the lifting seat plate 4, thereby protecting the screw 3 and the lifting seat plate 4 and extending the service life of the overall lifting device.

[0038] Furthermore, a nut is threadedly connected to the second end of the screw 3, and a second safety pad 8 is sleeved on the second end of the screw 3. One side of the second safety pad 8 fits against the side of the traction seat 2, and the other side of the second safety pad 8 fits against the side of the nut. The second safety pad 8 avoids direct rigid friction between the nut and the traction seat 2, thereby protecting the nut and the traction seat 2 and further extending the service life of the overall lifting device.

[0039] In one embodiment of the present invention, a pin hole is provided at the second end of the screw rod 3, through which a cotter pin 9 is inserted. The pin hole is arranged perpendicular to the axis of the screw rod 3. The cotter pin 9 can prevent the nut from slipping off the screw rod 3, thereby improving the stability of the connection between the lifting seat plate 4 and the tensioning seat 2. Furthermore, the use of the cotter pin 9 to prevent the nut from slipping off the screw rod 3 is easy to inspect and safe and reliable.

[0040] It should be noted that an antenna mounting seat 11 is set on the outer peripheral side of one of the crossbeam support tubes 1, and the antenna mounting seat 11 is used to install the antenna equipment; a traction rod assembly 10 is set on the bottom surface of the traction seat 2, and the traction rod assembly 10 is used to provide traction or braking force to the traction seat 2.

[0041] In one embodiment of the present invention, two transverse stop assemblies 5 are respectively provided at the two ends of the crossbeam support tube 1, wherein each transverse stop assembly 5 is connected to two crossbeam support tubes 1. The transverse stop assembly can limit the transverse relative movement between the bogie and the car body when traveling on a curve, thereby avoiding the risk of car body rollover due to centrifugal force and ensuring the safety of train operation.

[0042] The lateral stop assembly 5 comprises a mounting plate 501, which is V-shaped overall. The lower end of each mounting plate 501 is connected to a crossbeam support tube 1. The upper end of each mounting plate 501 is connected to a stop member 502. The stop member 502 comprises an assembly tube 5021, which is inserted into the upper end of the mounting plate 501. A limit plate 5022 is provided at one end of the assembly tube 5021, which is adjacent to the fifth wheel 2. The limit plate 5022 limits the position of the fifth wheel 2, preventing the bogie from excessively displacing laterally relative to the vehicle body when negotiating a curve, thereby ensuring the lateral stability of the vehicle during operation. This, in turn, limits the lateral swing of the vehicle body, reduces safety risks caused by abnormal bogie displacement, and ensures vehicle safety during operation. It should be noted that a buffer gap 6 is reserved between the two limit plates 5022 and the fifth wheel 2, respectively. This buffer gap 6 can meet the limiting requirements under different line conditions.

[0043] In summary, when the above-mentioned integral lifting device is subsequently repaired and maintained, the screw 3 can be directly disassembled and assembled within the limited span between the two crossbeam support tubes 1 to complete the disassembly and assembly of the lifting seat plate 4 without the need to disassemble or assemble the car body and bogie, that is, there is no need to involve disassembly and installation issues, effectively reducing the time cost, labor cost, material cost and other maintenance costs of the train inspection.

[0044] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0045] The principles and implementation methods of the present invention are described herein using specific examples. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. An integral lifting device, characterized in that: include: A fifth wheel is provided between the two crossbeam support tubes, wherein a group of assembly holes are provided at the lower end of the fifth wheel, and the axis direction of the assembly holes is consistent with the axis direction of the two crossbeam support tubes, and the fifth wheel is used to connect to the vehicle body; The lifting seat plate is T-shaped as a whole, and the two ends of the lower end of the lifting seat plate are respectively located directly below the two beam support tubes. The upper end of the lifting seat plate is provided with several groups of lifting mounting holes from top to bottom. The axial direction of the lifting mounting holes is consistent with the axial direction of the two beam support tubes. The screw passes through one group of the lifting mounting holes and the assembly hole in sequence to connect the lifting seat plate and the traction seat.

2. An integral lifting device according to claim 1, characterized in that: Three groups of lifting mounting holes are equidistantly arranged on the upper end portion of the lifting seat plate.

3. The integral lifting device according to claim 1, characterized in that: The first end of the screw rod is sleeved with a first safety pad, and the first safety pad is in contact with the side surface of the lifting seat plate.

4. An integral lifting device according to claim 3, characterized in that: The second end of the screw is threadedly connected to the nut, and the second end of the screw is sleeved with a second safety pad, one side of the second safety pad is in contact with the side of the traction seat, and the other side of the second safety pad is in contact with the side of the nut.

5. The integral lifting device according to claim 4, characterized in that: A pin hole is provided at the second end of the screw rod, and a cotter pin is passed through the pin hole.

6. The integral lifting device according to claim 1, characterized in that: An antenna mounting seat for mounting an antenna device is provided on the outer peripheral side surface of one of the beam support tubes.

7. The integral lifting device according to claim 1, characterized in that: The bottom surface of the fifth wheel is provided with a traction rod component for providing traction force or braking force to the fifth wheel.

8. The integral lifting device according to claim 1, characterized in that: Two transverse stoppers are respectively provided at the two ends of the crossbeam support tube, and the transverse stoppers include: a mounting plate, which is V-shaped as a whole, the lower end of the mounting plate is respectively connected to one of the crossbeam support tubes, and the upper end of the mounting plate is connected to the stop member.

9. The integral lifting device according to claim 8, characterized in that: The stopping component includes an assembly tube, the assembly tube is inserted into the upper end portion of the mounting plate, and a limiting top plate is provided at one end of the assembly tube close to the traction seat.

10. The integral lifting device according to claim 9, characterized in that: Buffer gaps are reserved between the two limiting top plates and the traction seats respectively.

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