Disassembling and assembling jig for adjustable connecting rod of motor train unit

Abstract

The invention provides a bullet train adjustable connecting rod dismounting and mounting jig which is used for dismounting and mounting connectors at the two ends of an adjustable connecting rod and comprises a base, a rolling type supporting assembly, a left sliding table assembly, a right sliding table assembly and a dismounting and mounting control assembly, the rolling type supporting assembly is used for supporting the adjustable connecting rod, and the adjustable connecting rod can rotate on the rolling type supporting assembly. The left sliding table assembly and the right sliding table assembly are arranged on the left side and the right side of the rolling type supporting assembly correspondingly and used for positioning the connector and controlling the connector to only move in the left-right direction. The dismounting control assembly is located on the rear side of the rolling type supporting assembly and comprises a support, a movable frame, a driving device and a pressing wheel. The support is fixed on the base; the movable frame is mounted above the support in a front-back swinging manner; the pressing wheel is rotationally connected to the front end of the movable frame; the driving device is installed on the movable frame, and the power output end is connected with the pressing wheel and used for controlling the pressing wheel to rotate forwards or backwards. According to the design, the adjustable connecting rod can be efficiently disassembled and assembled.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance of EMU parts, and particularly to a disassembly and assembly jig for an adjustable connecting rod of an EMU. Background Art

[0002] According to the requirements of the fifth-level maintenance process of the CRH380 EMU, the adjustable connecting rod needs to be disassembled and maintained. The adjustable connecting rod is an important connecting component of the bogie. One end is connected to the bolster of the bogie, and the other end is connected to the anti-roll torsion bar. It is a key component on the bogie of the high-speed EMU. The two sides of the adjustable connecting rod adopt a positive and reverse thread connection design. During the disassembly process, the operator first loosens and removes the bolts of the U-shaped clamps on both sides, and then clamps the hexagon on the middle connecting rod with a vise, and rotates the connecting parts on both sides respectively to disassemble the connecting heads on both sides. After maintenance, in the same way, the two connecting heads after maintenance are respectively screwed into the ends of the connecting rod in the reverse direction, which easily leads to inconsistent screwing lengths on both sides and quality problems. During the disassembly and installation process, the operator needs to rotate the connecting heads respectively, and the operation process is time-consuming and inefficient. Summary of the Invention

[0003] The purpose of the present invention is to provide a disassembly and assembly jig for an adjustable connecting rod of an EMU to solve the problems mentioned in the background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A disassembly and assembly jig for an adjustable connecting rod of an EMU, which is used for disassembling and installing the connecting heads at both ends of the adjustable connecting rod, includes a base and a rolling support assembly, a left slide table assembly, a right slide table assembly, and a disassembly and assembly control assembly installed on the base; the rolling support assembly is used to support the adjustable connecting rod and the adjustable connecting rod can rotate on the rolling support assembly; the left slide table assembly is arranged on the left side of the rolling support assembly and includes a first slide frame and a left slide table; the first slide frame is fixed on the base; the left slide table is slidably connected to the first slide frame left and right; the left slide table is provided with a first positioning portion for positioning the connecting head at the left end of the adjustable connecting rod; the right slide table assembly is arranged on the right side of the rolling support assembly and includes a second slide frame and a right slide table; the second slide frame is fixed on the base; the right slide table is slidably connected to the second slide frame left and right; the right slide table is provided with a second positioning portion for positioning the connecting head at the right end of the adjustable connecting rod; the disassembly and assembly control assembly is located behind the rolling support assembly and includes a support, a movable frame, a driving device, and a pressing wheel; the support is fixed on the base; the movable frame is swingably installed above the support; the pressing wheel is rotatably connected to the front end of the movable frame; the driving device is installed on the movable frame and the power output end is connected to the pressing wheel for controlling the pressing wheel to rotate forward or backward.

[0006] For further description of the present invention, the rolling support assembly includes a mounting base and rollers; the mounting base is fixed on the base; two mounting cavities are arranged left and right in the mounting base; clearance recesses for clearance of the adjustable connecting rod are provided at the left, middle and right parts of the mounting base; four rollers are provided; two rollers are arranged front and back in each mounting cavity.

[0007] For further description of the present invention, the first positioning portion includes a first arc-shaped support recess formed at the middle position above the left slide and clamping grooves on both front and back sides of the first arc-shaped support recess.

[0008] For further description of the present invention, the second positioning portion includes a circular hole formed at the middle position of the right slide and a second arc-shaped support groove on the left side of the circular hole.

[0009] For further description of the present invention, the disassembly and assembly control assembly further includes a limit block; the limit block is fixed on the base and is located at the rear lower part of the movable frame.

[0010] For further description of the present invention, a boss is provided at the middle position of the bottom of the movable frame; the boss is rotatably connected to the support through a connecting shaft.

[0011] For further description of the present invention, the pressing wheel is made of a rubber wheel.

[0012] For further description of the present invention, a pressing handle is fixed on the movable frame; the pressing handle extends to the front side of the movable frame.

[0013] For further description of the present invention, both the first slide and the second slide are provided with scales.

[0014] The beneficial effects of the present invention are as follows:

[0015] In this design, by placing the adjustable connecting rod on the rolling support assembly, the connecting head at the left end of the adjustable connecting rod is positioned by the first positioning portion of the left slide, and the connecting head at the right end of the adjustable connecting rod is positioned by the second positioning portion of the right slide. The driving device in the disassembly and assembly control assembly controls the pressing wheel to rotate forward, and then the movable frame is pushed forward and downward, so that the pressing wheel presses on the adjustable connecting rod to drive the adjustable connecting rod to rotate. The two connecting heads of the adjustable connecting rod are connected to the adjustable connecting rod by threads, and the thread directions are opposite. Therefore, when the adjustable connecting rod rotates, the two connecting heads move outwards synchronously, and the left slide and the right slide slide outwards until the connecting heads are separated from the adjustable connecting rod, completing the disassembly. After removing the workpiece for maintenance, when assembly is required after maintenance, the two connecting heads are respectively pre-installed on the adjustable connecting rod first, and then placed in this fixture. At this time, the driving device controls the pressing wheel to rotate in reverse, so as to realize the assembly of the connecting head and the adjustable connecting rod. This method can greatly improve the disassembly and assembly efficiency and the assembly quality. Description of the Drawings

[0016] Figure 1 is the overall structure diagram of the present invention after installing the adjustable connecting rod;

[0017] Figure 2 is the structure diagram of the rolling support assembly, left slide table assembly and right slide table assembly of the present invention;

[0018] Figure 3 is the structure diagram of the disassembly and assembly control assembly of the present invention. Detailed implementation manners

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] As Figures 1-3As shown in the figure, a disassembly and assembly jig for adjustable connecting rods of a motor car is used to disassemble and install the connectors 101 and 102 at both ends of the adjustable connecting rod 100, and includes a base 1 and a rolling support assembly 2, a left sliding table assembly 3, a right sliding table assembly 4, and a disassembly and assembly control assembly 5 installed on the base 1; the rolling support assembly 2 is used to support the adjustable connecting rod 100 and the adjustable connecting rod 100 can rotate on the rolling support assembly 2; the left sliding table assembly 3 is arranged on the left side of the rolling support assembly 2 and includes a first sliding frame 31 and a left sliding table 32; the first sliding frame 31 is fixed on the base 1; the left sliding table 32 is slidably connected to the first sliding frame 31 in the left-right direction; a first positioning portion 321 for positioning the connector 101 at the left end of the adjustable connecting rod 100 is provided on the left sliding table 32; the right sliding table assembly 4 is arranged on the right side of the rolling support assembly 2 and includes a second sliding frame 41 and a right sliding table 42; the second sliding frame 41 is fixed on the base 1; the right sliding table 42 is slidably connected to the second sliding frame 41 in the left-right direction; a second positioning portion 421 for positioning the connector 102 at the right end of the adjustable connecting rod 100 is provided on the right sliding table 42; the disassembly and assembly control assembly 5 is located at the rear side of the rolling support assembly 2 and includes a support 51, a movable frame 52, a driving device 53, and a pressing wheel 54; the support 51 is fixed on the base 1; the movable frame 52 is swingably installed above the support 51; the pressing wheel 54 is rotatably connected to the front end of the movable frame 52; the driving device 53 is installed on the movable frame 52 and the power output end is connected to the pressing wheel 54 for controlling the pressing wheel 54 to rotate forward or backward; when it is necessary to disassemble the connectors 101 and 102 of the adjustable connecting rod 100, the adjustable connecting rod 100 is placed on the rolling support assembly 2, the connector 101 at the left end of the adjustable connecting rod 100 is positioned by the first positioning portion 321 of the left sliding table 32, and the connector 102 at the right end of the adjustable connecting rod 100 is positioned by the second positioning portion 421 of the right sliding table 42. The driving device 53 in the disassembly and assembly control assembly 5 controls the pressing wheel 54 to rotate forward, and then the movable frame 52 is pulled forward and downward, so that the pressing wheel 54 presses on the adjustable connecting rod 100 to drive the adjustable connecting rod 100 to rotate. The two connectors 101 and 102 of the adjustable connecting rod 100 are threadedly connected to the adjustable connecting rod 100, and the thread directions are opposite. Therefore, when the adjustable connecting rod 100 rotates, the two connectors 101 and 102 cannot rotate because they are positioned by the first positioning portion 321 and the second positioning portion 421, so they move outwards synchronously, and the left sliding table 32 and the right sliding table 42 slide outwards until the connectors 101 and 102 are separated from the adjustable connecting rod 100, then the disassembly is completed. After taking out the workpiece for maintenance, when assembly is required after the maintenance is completed, the two connectors 101 and 102 are respectively pre-installed on the adjustable connecting rod 100 first, and then put into this jig. At this time, the driving device 53 controls the pressing wheel 54 to rotate reversely, so as to realize the assembly of the connectors 101 and 102 and the adjustable connecting rod 100. This method can greatly improve the disassembly and assembly efficiency and the assembly quality.

[0021] The rolling support assembly 2 includes a mounting base 21 and rollers 22; the mounting base 21 is fixed on the base 1; two mounting cavities 211 are arranged horizontally in the mounting base 21; clearance recesses 212 for clearance of the adjustable connecting rod 100 are provided at the left, middle and right parts of the mounting base 21; four rollers 22 are provided; two rollers 22 are arranged front and back in each mounting cavity 211, and the adjustable connecting rod 100 is placed between the two rollers 22 arranged front and back and is supported by two groups of rollers 22 arranged left and right, with high stability.

[0022] The first positioning portion 321 includes a first arc-shaped support recess 3211 formed at the middle position above the left sliding table 32 and clamping grooves 3212 located on both the front and rear sides of the first arc-shaped support recess 3211. The end of the connecting head 101 at the left end is a cylindrical structure and the axial direction is towards the front and back directions, and ear plates are connected to both the front and rear ends of the cylinder. The first arc-shaped support recess 3211 is used to support the cylinder, and the clamping grooves 3212 are used to support and position the ear plates.

[0023] The second positioning portion 421 includes a circular hole 4211 formed at the middle position of the right sliding table 42 and a second arc-shaped support groove 4221 located on the left side of the circular hole 4211. The end of the connecting head 102 at the right end is a cylindrical structure and the axial direction is the vertical direction, and an extending portion extending downward is further provided at the bottom of the cylinder. The second arc-shaped support groove 4221 is used to support the rod portion of the connecting head 102 at the right end, and the circular hole 4211 is for the cylindrical structure at the end to extend into for positioning.

[0024] The disassembly and assembly control component 5 further includes a limit block 55; the limit block 55 is fixed on the base 1 and is located below the rear of the movable frame 52. When the swinging of the movable frame 52 is completed, the movable frame 52 is supported and positioned by the limit block 55.

[0025] In this design, a boss 521 is provided at the middle position of the bottom of the movable frame 52; the boss 521 is rotatably connected to the support 51 through a connecting shaft 522, and this design has high stability.

[0026] The pressing wheel 54 is made of a rubber wheel. The pressing wheel 54 needs to be made of a soft material. In this design, a rubber wheel is used. According to actual requirements, a silica gel wheel or a polyurethane wheel can also be selected.

[0027] A pressing handle 56 is fixed on the movable frame 52; the pressing handle 56 extends to the front side of the movable frame 52, and an operator holds the pressing plate by hand to control the front and back swinging of the movable frame 52, improving the convenience of operation.

[0028] Both the first carriage 31 and the second carriage 41 are provided with scales. The first carriage 31 and the second carriage 41 are both slidably connected to the left slide 32 and the right slide 42 through slide rods, and the scales are marked on the slide rods, so that the staff can clearly know the positions of the left slide 32 and the right slide 42, and the assembly accuracy of the product can be improved.

[0029] The above description does not impose any limitation on the technical scope of the present invention. Any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A disassembly and assembly jig for an adjustable connecting rod of a motor vehicle, used for disassembling and installing the connectors at both ends of the adjustable connecting rod, characterized in that: It includes a base and a rolling support assembly, a left slide assembly, a right slide assembly and a disassembly control assembly installed on the base; the rolling support assembly is used to support an adjustable connecting rod and the adjustable connecting rod can rotate on the rolling support assembly; the left slide assembly is arranged on the left side of the rolling support assembly, and includes a first slide and a left slide; the first slide is fixed on the base; the left slide is connected to the first slide for sliding left and right; the left slide is provided with a first positioning part for positioning the connecting head at the left end of the adjustable connecting rod; the right slide assembly is arranged on the right side of the rolling support assembly, and includes The second slide and the right slide; the second slide is fixed on the base; the right slide is connected to the second slide by sliding left and right; the right slide is provided with a second positioning portion for positioning the connecting head at the right end of the adjustable connecting rod; the disassembly and assembly control assembly is located at the rear side of the rolling support assembly, and includes a support, a movable frame, a driving device and a pressure wheel; the support is fixed on the base; the movable frame is installed above the support so as to be able to swing back and forth; the pressure wheel is rotatably connected to the front end of the movable frame; the driving device is installed on the movable frame and the power output end is connected to the pressure wheel for controlling the forward or reverse rotation of the pressure wheel.

2. The adjustable connecting rod disassembly and assembly jig for a motor vehicle according to claim 1, characterized in that: The rolling support assembly includes a mounting seat and a roller; the mounting seat is fixed on the base; two mounting cavities distributed on the left and right are provided in the mounting seat; the left, middle and right parts of the mounting seat are each provided with a clearance recess for an adjustable connecting rod; four rollers are arranged; and two rollers distributed front and back are installed in each mounting cavity.

3. The adjustable connecting rod disassembly and assembly jig for a motor vehicle according to claim 1, characterized in that: The first positioning portion includes a first arc-shaped supporting recess formed at a middle position above the left slide and a clamping groove located at both sides of the front and rear of the first arc-shaped supporting recess.

4. The adjustable connecting rod disassembly and assembly jig for a motor vehicle according to claim 1, characterized in that: The second positioning portion includes a circular hole formed in the middle of the right slide table and a second arc-shaped supporting groove located on the left side of the circular hole.

5. The adjustable connecting rod disassembly and assembly jig for a motor vehicle according to claim 1, characterized in that: The disassembly and assembly control component also includes a limit block; the limit block is fixed on the base and is located at the rear and lower part of the movable frame.

6. The adjustable connecting rod disassembly and assembly jig for a motor vehicle according to claim 1, characterized in that: A boss is provided at the middle position of the bottom of the movable frame; the boss is rotatably connected to the support through a connecting shaft.

7. The adjustable connecting rod disassembly and assembly jig for a motor vehicle according to claim 1, characterized in that: The pressing wheel is a rubber wheel.

8. The adjustable connecting rod disassembly and assembly jig for a motor vehicle according to claim 1, characterized in that: A pressing handle is fixed on the movable frame; the pressing handle extends to the front side of the movable frame.

9. The adjustable connecting rod disassembly and assembly jig for a motor vehicle according to claim 1, characterized in that: The first slide and the second slide are both provided with scales.

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