A pre-assembly tool and method for underframe equipment of electric vehicle group

Abstract

The present invention discloses a pre-assembly tool for chassis equipment of an electric vehicle group, comprising a rigid platform, a plurality of longitudinal linear slide rails arranged in parallel on the rigid platform, a first positioning mechanism and a second positioning mechanism moving along the longitudinal linear slide rail, a plurality of longitudinal positioning blocks are arranged on one side of the longitudinal linear slide rail, a third positioning mechanism is arranged at both ends of the longitudinal linear slide rail, a longitudinal connecting plate moving along the longitudinal linear slide rail is arranged between the first positioning mechanism and the longitudinal linear slide rail, a transverse linear slide rail is arranged on the longitudinal connecting plate, the first positioning mechanism moves along the transverse linear slide rail, and a fine-tuning mechanism is also arranged at one end of the rigid platform, aiming to solve the problems that the pre-assembly tool for chassis equipment occupies a large area, has many vehicle type conversion accessories, has a large workload and has a low work efficiency. The present invention also discloses a pre-assembly method for chassis equipment of an electric vehicle group, which adopts a modular assembly method and has the characteristics of fast assembly and dispersed process.

Description

Technical Field

[0001] The invention belongs to the field of railway electric multiple unit manufacturing, and in particular relates to a pre-assembly tool and method for underframe equipment of an electric multiple unit. Background Art

[0002] In the context of the current leapfrog development of railways, the speed, safety and comfort of EMUs with decentralized power have been greatly improved compared with the concentrated traction power of railway passenger cars, and the requirements for EMU manufacturing technology are also getting higher and higher. Figure 6 As shown in the figure, it is a structural schematic diagram of the chassis equipment of the electric train. At present, the chassis equipment of the electric train adopts modular production, which mainly consists of mounting beams, various equipment parts, various gas pipelines, power cables and cable ducts. There are two types of electric trains: 8-carriage and 16-carriage. As for the chassis equipment composition of the electric train, there are 8 models of 8-carriage cars and 10 models of 16-carriage cars. The chassis equipment composition of each model has different types and spacings of mounting beams, different equipment layouts, different terminal orientations, etc. The volume and weight of the chassis equipment composition of each model are very large. The models on the assembly line are produced alternately according to the grouping. If a pre-assembly tooling of the chassis equipment is made for one model, the tooling occupies too much area, reducing the utilization rate of the workshop area; if the tooling adopts the method of replacing the position and type of the upper support column according to the model on the same bottom platform, a large number of support columns need to be made, and the workload of each model change is very large, and the area occupied by the replaced support columns is also very large.

[0003] In view of this, this patent application is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a pre-assembly tool for chassis equipment of an electric multiple unit, aiming to solve the problems that the pre-assembly tool for chassis equipment occupies a large area, has many accessories for vehicle model conversion, has a large workload and low work efficiency. Another purpose of the present invention is a pre-assembly method for chassis equipment of an electric multiple unit, which adopts a modular assembly method and has the characteristics of fast assembly and dispersed processes.

[0005] To solve the above problems, the technical solution adopted by the present invention is: a pre-assembly tooling for an electric vehicle frame equipment, comprising a rigid platform, a plurality of longitudinal linear slide rails arranged in parallel on the rigid platform, a first positioning mechanism and a second positioning mechanism moving along the longitudinal linear slide rail, a plurality of longitudinal positioning blocks are arranged on one side of the longitudinal linear slide rail, a third positioning mechanism is arranged at both ends of the longitudinal linear slide rail, a longitudinal connecting plate moving along the longitudinal linear slide rail is arranged between the first positioning mechanism and the longitudinal linear slide rail, a transverse linear slide rail is arranged on the longitudinal connecting plate, the first positioning mechanism moves along the transverse linear slide rail, and a fine-tuning mechanism is also arranged at one end of the rigid platform.

[0006] The first positioning mechanism includes a first supporting column and a positioning assembly arranged above the first supporting column, the positioning assembly includes a first positioning pallet and a U-shaped positioning fork arranged at one end of the first positioning pallet, the other end of the first positioning pallet is fixed on the first supporting column, and a support block is arranged at the other end of the first positioning pallet.

[0007] A transverse positioning block is arranged on the longitudinal connecting plate, and the first supporting column is connected to the transverse positioning block via a pin shaft.

[0008] The second positioning mechanism includes a second supporting column and an H-shaped positioning support plate. The second supporting column includes an upper column and a lower column. A movable connection portion is arranged between the upper column and the lower column.

[0009] A slide rail is correspondingly arranged between the lower column and the longitudinal linear slide rail, the connection between the lower column and the upper column is a groove, and the movable connection part is arranged on one side of the groove.

[0010] The movable connection part includes a first connection seat arranged on the upper column and a second connection seat arranged on the lower column. The first connection seat and the second connection seat are connected by a rotating shaft, and the upper column and the lower column are fixedly connected in the groove by bolts.

[0011] The third positioning mechanism comprises third supporting columns arranged on the longitudinal linear slide rail, the third supporting columns are arranged in groups of two, and end brackets are arranged between the third supporting columns.

[0012] The fine-tuning mechanism includes a connecting rod, fixed columns and an adjusting screw arranged at both ends of the connecting rod. The adjusting screw, the connecting rod and the fixed column are connected by a fine-tuning connecting block. The adjusting screw is fixedly connected to the rigid platform. A fine-tuning slide rail is arranged at one end of the rigid platform corresponding to the fine-tuning connecting block.

[0013] A roller and a clamping block are arranged at one end of the fixing column.

[0014] A method for preassembling an underframe device of an electric vehicle group comprises the following steps:

[0015] (1) Adjust the arrangement of the supporting columns and the direction of the positioning forks of the tooling according to the chassis model to be assembled;

[0016] (2) Lift the installation beam onto the supporting column and secure it firmly;

[0017] (3) Lift the main transformer, inverter, battery box, terminal equipment compartment, dirt tank, clean water tank and other bottom equipment modules to the corresponding installation beams and pre-fix them with bolts;

[0018] Lift the longitudinal power cables, signal cables and cable ducts to the top of the installation beam, and plug in the interfaces of various circuits and equipment;

[0019] (5) Connect the air pipelines of each brake unit;

[0020] (6) Conduct gas circuit pressure test and electrical withstand voltage test on the entire chassis equipment to ensure compliance;

[0021] (7) Use an air cushion vehicle to transport the tooling and assembled chassis equipment to the bottom of the vehicle body, perform preliminary positioning, then lower the vehicle body, fine-tune the mechanism to align the mounting beam with the fixing hole of the vehicle body, connect the interface between the chassis equipment and the vehicle, and finally fix the mounting beam to the vehicle and secure the bolts between each equipment module and the mounting beam;

[0022] The beneficial effects of the present invention are:

[0023] The present invention comprises a rigid platform, a longitudinal linear slide rail, a first positioning mechanism and a second positioning mechanism. Both the first positioning mechanism and the second positioning mechanism can slide on the longitudinal linear slide rail, and can adapt to different vehicle models by performing gapless movement on the longitudinal linear slide rail. A flexible and modular design scheme is adopted to realize that a set of tooling can meet the requirements of assembling chassis equipment of multiple different vehicle models. The present invention can quickly switch vehicle models through the positioning of each positioning block, thereby reducing the number of tooling and saving the occupied area of ​​multiple sets of tooling, which is beneficial to the layout of production stations, and solves the problem that tooling of the same vehicle model needs to be lifted and reversed by a crane, thereby improving the effective utilization rate of the crane, greatly reducing the labor intensity of workers and improving production efficiency.

[0024] The present invention is provided with a fine-tuning device, which drives the entire tooling to change its lateral position by rotating the screw rod, and moves along the workshop track longitudinally through the roller group of the position fine-tuning device. The fine-tuning mechanism is provided to achieve fine-tuning of the entire tooling according to the position of the vehicle body.

[0025] The second supporting column of the second positioning mechanism of the present invention adopts a two-stage design, the top surface of the lower column is provided with a groove, and a connecting seat with a rotating shaft is arranged on the side. The upper column can be tipped over around the gapless rotating shaft, and after being erected, it is precisely positioned with the groove and then fixed with bolts to ensure the relative position accuracy of the four second supporting columns; the provision of a flippable second supporting column can adapt to the position arrangement of the main transformer equipment of each vehicle model. When the second supporting column is flipped over, a vehicle model without a main transformer can be assembled, thereby avoiding the installation of other equipment. When a vehicle model with a main transformer is assembled, the upper column is connected to the lower column, thereby achieving the purpose of assembling the chassis equipment of various vehicle models with the same set of tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a schematic diagram of the structure of the first positioning mechanism;

[0028] Figure 3is a structural schematic diagram of the second positioning mechanism in an unflipped state;

[0029] Figure 4 is a schematic diagram of the structure of the second positioning mechanism in a flipping state;

[0030] Figure 5 It is a schematic diagram of the fine-tuning mechanism structure;

[0031] Figure 6 It is a schematic diagram of the structure of the underframe equipment of an electric train set.

[0032] In the figure: 1-longitudinal linear slide, 2-longitudinal fixed block, 3-longitudinal connecting plate, 4-transverse linear slide, 5-first positioning mechanism, 501-first supporting column, 511-first groove, 502-positioning assembly, 521-first positioning support plate, 522-U-shaped positioning fork, 523-support block, 524-cylinder, 6-second positioning mechanism, 601-second supporting column, 611-upper column, 612-lower column, 613-groove, 602-H-type positioning support plate, 603 - movable connection part, 631-first connecting seat, 632-second connecting seat, 633-rotating shaft, 7-third positioning mechanism, 701-third supporting column, 702-end bracket, 8-fine-adjusting mechanism, 801-connecting rod, 802-fixed column, 803-adjusting screw, 804-fine-adjusting connecting block, 805-fine-adjusting slide rail, 806-roller, 807-block, 9-lateral positioning block, 10-rigid platform, 11-workshop track, 12-mounting beam, 13-undercarriage equipment. DETAILED DESCRIPTION

[0033] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods and in conjunction with the accompanying drawings.

[0034] like Figure 1-Figure 6 As shown, a pre-assembly tooling for an electric vehicle chassis equipment comprises a rigid platform 10, a plurality of longitudinal linear slide rails 1 arranged in parallel on the rigid platform 10, a first positioning mechanism 5 and a second positioning mechanism 6 moving along the longitudinal linear slide rail 1, a plurality of longitudinal positioning blocks 2 are arranged on one side of the longitudinal linear slide rail 1, a third positioning mechanism 7 is arranged at both ends of the longitudinal linear slide rail 1, and a fine-tuning mechanism 8 is also arranged at one end of the rigid platform 10.

[0035] A longitudinal connecting plate 3 moving along the longitudinal linear slide rail 1 is arranged between the first positioning mechanism 5 and the longitudinal linear slide rail 1, a transverse linear slide rail 4 is arranged on the longitudinal connecting plate 3, and the first positioning mechanism 5 moves along the transverse linear slide rail 4;

[0036] The first positioning mechanism 5 includes a first supporting column 501 and a positioning assembly 502 arranged above the first supporting column 501, the positioning assembly 502 includes a first positioning support plate 521 and a U-shaped positioning fork 522 arranged at one end of the first positioning support plate 521, the other end of the first positioning support plate 521 is fixed on the first supporting column 501, and the other end of the first positioning support plate 521 is provided with a support block 523.

[0037] A transverse positioning block 9 is disposed on the longitudinal connecting plate 3 , and the first supporting column 501 is connected to the transverse positioning block 9 via a pin shaft.

[0038] Specifically, a first groove 511 is processed on the top of the first supporting column 501, a circular hole is processed on the bottom of the first groove 511, and the two side surfaces of the first groove 511 are symmetrical about the center of the circular hole; the first positioning support plate 521 is processed as an integral unit, a cylinder 524 is arranged below the first positioning support block 521 corresponding to the circular hole, and the two long side surfaces of the flat plate are symmetrical about the center of the cylinder. After the cylinder of the positioning support block 22 is inserted into the circular hole of the column 21 with a transition fit, the two long side surfaces of the first positioning support plate 521 are just stuck in the first groove 511 of the first supporting column 501, forming a reliable positioning.

[0039] Specifically, the mounting beam 12 of different vehicle models can be adapted by assembling the positioning assembly 502. The positioning assembly 502 and the first supporting column 501 can be replaced by plugging and unplugging the positioning assembly 502 and the first supporting column 501 as a whole, so as to complete the rapid conversion of vehicle models composed of different chassis equipment 13.

[0040] Specifically, according to the position of the mounting beam 12 to be positioned, the first supporting column 501 is moved laterally along the longitudinal connecting plate 3, and then the mounting beam 12 is placed on the supporting block 523 of the positioning assembly 502. After positioning, the first supporting column 501 is fixed to the transverse positioning block 9 by a pin shaft, and the longitudinal connecting plate 3 is fixed to the longitudinal positioning block 2 by a pin shaft. At this point, the mounting beam 12 is positioned. Specifically, the longitudinal positioning block 2 and the transverse positioning block 9 are arranged corresponding to the mounting beam 12.

[0041] The second positioning mechanism 6 includes a second supporting column 601 and an H-shaped positioning support plate 602. The second supporting column 601 includes an upper column 611 and a lower column 612. A movable connection portion 603 is provided between the upper column 611 and the lower column 612. The movable connection portion 603 includes a first connection seat 631 provided on the upper column 611 and a second connection seat 632 provided on the lower column 612. The first connection seat 631 and the second connection seat 632 are connected by providing a rotating shaft 633. The upper column 611 and the lower column 612 are fixedly connected in a groove by bolts.

[0042] A slide rail is correspondingly arranged between the lower column 612 and the longitudinal linear slide rail 1 . The connection between the lower column 612 and the upper column 611 is a groove 613 . The movable connection part 603 is arranged on one side of the groove 613 .

[0043] Specifically, according to the position arrangement of the main transformer equipment of each vehicle model, the flippable second support column 601 can change the vehicle model and support the main transformer equipment. At the same time, if a vehicle model without a main transformer is assembled, the upper column 611 can be quickly flipped over to avoid the installation of other equipment, thereby achieving the purpose of assembling multiple vehicle model chassis equipment 13 with the same set of tooling.

[0044] The third positioning mechanism 7 includes third supporting columns 701 arranged on the longitudinal linear slide rail 1, the third supporting columns 701 are grouped in pairs, end brackets 702 are arranged between the third supporting columns 701, and sliders are correspondingly arranged between the third supporting columns 701 and the longitudinal linear slide rail 1.

[0045] The fine-tuning mechanism 8 includes a connecting rod 801, a fixed column 802 and an adjusting screw 803 arranged at both ends of the connecting rod 801, the adjusting screw 803, the connecting rod 801 and the fixed column 802 are connected by a fine-tuning connecting block 804, the adjusting screw 803 is fixedly connected to the rigid platform 10, and a fine-tuning slide rail 805 is arranged at one end of the rigid platform 10 corresponding to the fine-tuning connecting block 804. A roller 806 and a clamping block 807 are arranged at one end of the fixed column 802.

[0046] Specifically, the entire tooling is moved to the assembly chassis at the workshop track 11 by manpower under the air cushion. Since the friction between the air cushion and the ground is small, the entire tooling will drift on the ground. Therefore, a set of position fine-tuning devices are added at both ends of the tooling rigid platform 10. The working principle is as follows:

[0047] The roller 806 and the connecting rod 801 are connected by an axial hole. After the tooling is moved to the position of the workshop track 11, the roller 806 is placed on the inner side of the workshop track 11. In this way, the entire tooling moves longitudinally guided by the two workshop tracks 11; when lateral adjustment is required, the adjusting screw 803 is rotated. Under the action of the adjusting screw 803, the rigid platform 10 of the tooling can move laterally, making it convenient for workers to fine-tune the position of the chassis equipment components relative to the vehicle body.

[0048] A method for preassembling an underframe device of an electric train set, using the above-mentioned tooling, comprises the following steps:

[0049] (1) Adjust the arrangement of the supporting columns and the direction of the positioning forks of the tooling according to the chassis model to be assembled;

[0050] (2) Lift the installation beam onto the supporting column and secure it firmly;

[0051] (3) Lift the main transformer, inverter, battery box, terminal equipment compartment, dirt tank, clean water tank and other bottom equipment modules to the corresponding installation beams and pre-fix them with bolts;

[0052] (4) Lift the longitudinal power cables, signal cables and cable ducts to the top of the installation beam, and plug in the interfaces of various circuits and equipment;

[0053] (5) Connect the air pipelines of each brake unit;

[0054] (6) Conduct gas circuit pressure test and electrical withstand voltage test on the entire chassis equipment to ensure compliance;

[0055] (7) Use an air cushion vehicle to transport the tooling and assembled chassis equipment to the bottom of the vehicle body, perform preliminary positioning, then lower the vehicle body, fine-tune the mechanism to align the mounting beam with the fixing hole of the vehicle body, connect the interface between the chassis equipment and the vehicle, and finally fix the mounting beam to the vehicle and secure the bolts between each equipment module and the mounting beam;

[0056] The above description is only a preferred embodiment of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A pre-assembly tool for an underframe equipment of an electric train, characterized in that: It comprises a rigid platform, a plurality of longitudinal linear slide rails arranged in parallel on the rigid platform, a first positioning mechanism and a second positioning mechanism moving along the longitudinal linear slide rail, a plurality of longitudinal positioning blocks are arranged on one side of the longitudinal linear slide rail, a third positioning mechanism is arranged at both ends of the longitudinal linear slide rail, a longitudinal connecting plate moving along the longitudinal linear slide rail is arranged between the first positioning mechanism and the longitudinal linear slide rail, a transverse linear slide rail is arranged on the longitudinal connecting plate, the first positioning mechanism moves along the transverse linear slide rail, and a fine adjustment mechanism is also arranged at one end of the rigid platform; The first positioning mechanism includes a first supporting column and a positioning assembly arranged above the first supporting column, the positioning assembly includes a first positioning support plate and a U-shaped positioning fork arranged at one end of the first positioning support plate, the other end of the first positioning support plate is fixed to the first supporting column, and a support block is arranged at the other end of the first positioning support plate; The second positioning mechanism includes a second supporting column and an H-shaped positioning plate, the second supporting column includes an upper column and a lower column, and a movable connection portion is arranged between the upper column and the lower column; the third positioning mechanism includes a third supporting column arranged on the longitudinal linear slide rail, the third supporting columns are grouped in pairs, and end brackets are arranged between the third supporting columns.

2. The pre-assembly tooling for the underframe equipment of an electric vehicle group as claimed in claim 1, characterized in that: A transverse positioning block is arranged on the longitudinal connecting plate, and the first supporting column is connected to the transverse positioning block via a pin shaft.

3. The pre-assembly tooling for the underframe equipment of an electric vehicle group as claimed in claim 1, characterized in that: A slide rail is correspondingly arranged between the lower column and the longitudinal linear slide rail, the connection between the lower column and the upper column is a groove, and the movable connection part is arranged on one side of the groove.

4. The pre-assembly tooling for the underframe equipment of an electric vehicle group as claimed in claim 3, characterized in that: The movable connection part includes a first connection seat arranged on the upper column and a second connection seat arranged on the lower column. The first connection seat and the second connection seat are connected by a rotating shaft, and the upper column and the lower column are fixedly connected in the groove by bolts.

5. The pre-assembly tooling for the underframe equipment of an electric vehicle group as claimed in claim 1, characterized in that: The fine-tuning mechanism includes a connecting rod, fixed columns and an adjusting screw arranged at both ends of the connecting rod. The adjusting screw, the connecting rod and the fixed column are connected by a fine-tuning connecting block. The adjusting screw is fixedly connected to the rigid platform. A fine-tuning slide rail is arranged at one end of the rigid platform corresponding to the fine-tuning connecting block.

6. The pre-assembly tooling for the underframe equipment of an electric vehicle group as claimed in claim 5, characterized in that: A roller and a clamping block are arranged at one end of the fixing column.

7. A method for preassembling an underframe device of an electric train, characterized in that: The tooling according to any one of claims 1 to 6 comprises the following steps: (1) Adjust the arrangement of the supporting columns and the direction of the positioning forks of the tooling according to the chassis model to be assembled; (2) Lift the installation beam onto the supporting column and secure it firmly; (3) Lift the main transformer, inverter, battery box, terminal equipment compartment, dirt tank, and clean water tank chassis equipment modules to the corresponding installation beams and pre-fix them with bolts; Lift the longitudinal power cables, signal cables and cable ducts to the top of the installation beam, and plug in the interfaces of various circuits and equipment; (5) Connect the air pipelines of each brake unit; (6) Conduct gas circuit pressure test and electrical withstand voltage test on the entire chassis equipment to ensure compliance; (7) Use an air cushion vehicle to transport the tooling and assembled chassis equipment to the bottom of the vehicle body, perform preliminary positioning, then lower the vehicle body, fine-tune the mechanism to align the mounting beam with the fixing hole of the vehicle body, connect the interface between the chassis equipment and the vehicle, and finally fix the mounting beam to the vehicle and secure the bolts between each equipment module and the mounting beam; (8) Lift the vehicle body and transport the tooling to the pre-assembly station using an air cushion vehicle.

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