Adjustable connecting rod dismounting tool for motor train unit

Abstract

The application provides a detachable and mountable jig for a connecting head at two ends of an adjustable connecting rod of a train, comprising a base, a rolling support assembly, a left slide table assembly, a right slide table assembly and a detachable and mountable control assembly mounted on the base; the rolling support assembly is used for supporting the adjustable connecting rod and the adjustable connecting rod can rotate on the rolling support assembly; the left slide table assembly and the right slide table assembly are respectively arranged on left and right sides of the rolling support assembly and are used for positioning the connecting head and controlling the connecting head to move only in left and right directions; the detachable and mountable control assembly is located at a rear side of the rolling support 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 swingably mounted above the support; the pressing wheel is rotationally connected to a front end of the movable frame; the driving device is mounted on the movable frame and a power output end of the driving device is connected with the pressing wheel and is used for controlling the pressing wheel to rotate forward or reversely; the design can efficiently detach and mount the adjustable connecting rod.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inspection and repair of parts of a motor train unit, and particularly relates to a motor train unit adjustable connecting rod dismounting and mounting jig. BACKGROUND

[0002] According to the five-grade repair requirement of the CRH380 motor train unit, the adjustable connecting rod needs to be disassembled and repaired. The adjustable connecting rod is an important connecting part of a bogie, one end of which is connected with a bogie bolster, and the other end of which is connected with an anti-rolling torsion bar, and is a key part on the bogie of the high-speed motor train unit. The adjustable connecting rod is connected with two sides by using a positive and negative thread design. During disassembly, an operator first loosens the U-shaped lock bolt on the two sides and then dismounts the U-shaped lock bolt, and then clamps a hexagonal body on the middle connecting rod by using a vise, rotates the two connecting parts respectively, and dismounts the two connecting heads. After repair, the two connecting heads are screwed into the end of the connecting rod in the same way in the reverse direction, so that the length of the two sides after screwing is not consistent, and quality problems occur. During disassembly and installation, the operator needs to rotate the connecting head, which wastes time and is low in efficiency. SUMMARY

[0003] The present application aims to provide a motor train unit adjustable connecting rod dismounting and mounting jig to solve the problems mentioned in the background.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A motor train unit adjustable connecting rod dismounting and mounting jig is used for dismounting and mounting the connecting heads at the two ends of the adjustable connecting rod, and comprises a base, a rolling support assembly, a left sliding table assembly, a right sliding table assembly and a dismounting and mounting control assembly which are mounted on the base. The rolling support assembly is used for supporting the adjustable connecting rod and the adjustable connecting rod can rotate on the rolling support assembly. The left sliding table assembly is arranged on the left side of the rolling support assembly and comprises a first sliding frame and a left sliding table. The first sliding frame is fixed on the base. The left sliding table is slidably connected to the first sliding frame. The left sliding table is provided with a first positioning part for positioning the connecting head at the left end of the adjustable connecting rod. The right sliding table assembly is arranged on the right side of the rolling support assembly and comprises a second sliding frame and a right sliding table. The second sliding frame is fixed on the base. The right sliding table is slidably connected to the second sliding frame. The right sliding table is provided with a second positioning part for positioning the connecting head at the right end of the adjustable connecting rod. The dismounting and mounting control assembly is located on the rear side of the rolling support assembly and comprises a support, a movable frame, a driving device and a pressure roller. The support is fixed on the base. The movable frame is swingably mounted above the support. The pressure roller is rotatably connected to the front end of the movable frame. The driving device is mounted on the movable frame and the power output end of the driving device is connected with the pressure roller, so as to control the forward rotation or reverse rotation of the pressure roller.

[0006] Further description of the present application, the rolling support assembly comprises a mounting seat and a roller; the mounting seat is fixed on the base; two mounting cavities are arranged in the mounting seat; the left, middle and right parts of the mounting seat are provided with clearance recesses for avoiding the clearance adjustable connecting rod; the roller is provided with four; two rollers are arranged in each mounting cavity.

[0007] Further description of the present application, the first positioning part comprises a first arc-shaped support recess formed at the middle position above the left sliding table and a clamping groove located on the front and back sides of the first arc-shaped support recess.

[0008] Further description of the present application, the second positioning part comprises a round hole formed at the middle position of the right sliding table and a second arc-shaped support groove located on the left side of the round hole.

[0009] Further description of the present application, the disassembly control assembly further comprises a limiting block; the limiting block is fixed on the base and located below the rear of the movable frame.

[0010] Further description of the present application, the middle position of the bottom of the movable frame is provided with a boss; the boss is rotationally connected with the support through a connecting shaft.

[0011] Further description of the present application, the pressure roller adopts a rubber wheel.

[0012] Further description of the present application, the movable frame is fixed with a pressing handle; the pressing handle extends to the front side of the movable frame.

[0013] Further description of the present application, the first sliding frame and the second sliding frame are provided with scales.

[0014] The present application has the following advantages:

[0015] The adjustable connecting rod is placed on the rolling support assembly, the left end of the adjustable connecting rod is positioned through the first positioning part of the left sliding table, the right end of the adjustable connecting rod is positioned through the second positioning part of the right sliding table, the driving device in the disassembly control assembly controls the forward rotation of the pressure roller, then the movable frame is pushed downward, so that the pressure roller is pressed 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 through threads, and the thread rotation directions are opposite, so that the two connecting heads move outward synchronously during the rotation of the adjustable connecting rod, the left sliding table and the right sliding table slide outward, until the connecting heads are separated from the adjustable connecting rod, the disassembly is completed, the workpiece is removed for maintenance, and when the assembly is needed after the maintenance is completed, the two connecting heads are pre-assembled on the adjustable connecting rod respectively, and then placed in the jig, at this time, the driving device controls the reverse rotation of the pressure roller, so that the assembly of the connecting head and the adjustable connecting rod can be realized, and the disassembly efficiency and the assembly quality can be greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is the overall structure diagram of the present application after installing the adjustable connecting rod;

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

[0018] Fig. 3 is the structure diagram of the disassembly and assembly control assembly of the present application. DETAILED DESCRIPTION

[0019] The present application is further illustrated below in combination with the drawings:

[0020] As Figs. 1-3As shown, a motor car adjustable connecting rod dismounting and mounting jig is used for dismounting and mounting connecting heads 101, 102 at two ends of an adjustable connecting rod 100, comprising a base 1 and a rolling support assembly 2, a left slide table assembly 3, a right slide table assembly 4 and a dismounting and mounting control assembly 5 mounted on the base 1; the rolling support assembly 2 is used for supporting the adjustable connecting rod 100 and the adjustable connecting rod 100 can rotate on the rolling support assembly 2; the left slide table assembly 3 is arranged at the left side of the rolling support assembly 2 and comprises a first slide 31 and a left slide table 32; the first slide 31 is fixed on the base 1; the left slide table 32 is slidably connected on the first slide 31; the left slide table 32 is provided with a first positioning part 321 for positioning the connecting head 101 at the left end of the adjustable connecting rod 100; the right slide table assembly 4 is arranged at the right side of the rolling support assembly 2 and comprises a second slide 41 and a right slide table 42; the second slide 41 is fixed on the base 1; the right slide table 42 is slidably connected on the second slide 41; the right slide table 42 is provided with a second positioning part 421 for positioning the connecting head 102 at the right end of the adjustable connecting rod 100; the dismounting and mounting control assembly 5 is located at the rear side of the rolling support assembly 2 and comprises a support 51, a movable frame 52, a driving device 53 and a pressure roller 54; the support 51 is fixed on the base 1; the movable frame 52 is swingably mounted above the support 51; the pressure roller 54 is rotatably connected at the front end of the movable frame 52; the driving device 53 is mounted on the movable frame 52 and the power output end is connected with the pressure roller 54 for controlling the pressure roller 54 to rotate forward or reversely; when the connecting heads 101, 102 of the adjustable connecting rod 100 need to be dismounted, the adjustable connecting rod 100 is placed on the rolling support assembly 2, the connecting head 101 at the left end of the adjustable connecting rod 100 is positioned by the first positioning part 321 of the left slide table 32, the connecting head 102 at the right end of the adjustable connecting rod 100 is positioned by the second positioning part 421 of the right slide table 42, the driving device 53 in the dismounting and mounting control assembly 5 controls the pressure roller 54 to rotate forward, then the movable frame 52 is pushed forward and downward, so that the pressure roller 54 is pressed on the adjustable connecting rod 100 to drive the adjustable connecting rod 100 to rotate, the two connecting heads 101, 102 of the adjustable connecting rod 100 are connected to the adjustable connecting rod 100 by threads and the thread rotation directions are opposite, so that when the adjustable connecting rod 100 rotates, the two connecting heads 101, 102 cannot rotate due to being positioned by the first positioning part 321 and the second positioning part 421, so as to move outward synchronously, the left slide table 32 and the right slide table 42 slide outward until the connecting heads 101, 102 are separated from the adjustable connecting rod 100, then the dismounting is completed, the workpiece is taken out for maintenance, when the assembly is needed after the maintenance is completed, the two connecting heads 101, 102 are respectively pre-assembled on the adjustable connecting rod 100, then placed in the jig, at this time the driving device 53 controls the pressure roller 54 to rotate reversely, so that the assembly of the connecting heads 101, 102 and the adjustable connecting rod 100 can be realized, the dismounting and mounting efficiency and the assembly quality can be greatly improved.

[0021] The rolling support assembly 2 comprises a mounting seat 21 and rollers 22; the mounting seat 21 is fixed on the base 1; two mounting cavities 211 are arranged in the mounting seat 21; the left part, the middle part and the right part of the mounting seat 21 are all provided with empty recesses 212 for avoiding the adjustable connecting rods 100; four rollers 22 are arranged; two rollers 22 are arranged in each mounting cavity 211; the adjustable connecting rod 100 is arranged between the two rollers 22, and is supported by the two groups of rollers 22, so that the stability is high.

[0022] The first positioning part 321 comprises a first arc-shaped support recess 3211 formed at the middle part of the left sliding table 32 and a clamping groove 3212 arranged on the left and right sides of the first arc-shaped support recess 3211; the end of the connecting head 101 is in a cylindrical structure and is axially directed to the front and back directions; the front and back ends of the cylinder are connected with an ear plate; the first arc-shaped support recess 3211 is used for supporting the cylinder; and the clamping groove 3212 is used for supporting and positioning the ear plate.

[0023] The second positioning part 421 comprises a round hole 4211 formed at the middle part of the right sliding table 42 and a second arc-shaped support groove 4221 arranged on the left side of the round hole 4211; the end of the connecting head 102 is in a cylindrical structure and is axially directed to the vertical direction; the bottom of the cylinder further has an extending part extending downward; the second arc-shaped support groove 4221 is used for supporting the rod part of the connecting head 102; and the round hole 4211 is used for positioning the cylindrical structure of the end.

[0024] The disassembly and assembly control assembly 5 further comprises a limiting block 55; the limiting block 55 is fixed on the base 1 and is arranged below the rear of the movable frame 52; when the movable frame 52 is swung, the movable frame 52 is supported and positioned by the limiting block 55.

[0025] In the design, the middle part of the bottom of the movable frame 52 is provided with a boss 521; the boss 521 is rotationally connected with the support 51 through a connecting shaft 522; and the design has high stability.

[0026] The pressing wheel 54 is made of a rubber wheel; the pressing wheel 54 needs to be made of soft material; the design uses a rubber wheel; according to actual needs, a silica gel wheel or a polyurethane wheel can also be selected.

[0027] The movable frame 52 is fixed with a pressing handle 56; the pressing handle 56 extends to the front side of the movable frame 52; a worker holds the pressing handle to control the movable frame 52 to swing back and forth, so that the convenience of operation is improved.

[0028] The first slide 31 and the second slide 41 are provided with scales, the first slide 31 and the second slide 41 are connected with the left slide table 32 and the right slide table 42 through slide rods, and the scales are marked on the slide rods, so that the positions of the left slide table 32 and the right slide table 42 can be clearly shown to the staff, and the assembly precision of products is improved.

[0029] The above description is not intended to limit the technical scope of the present application, and any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still belong to the technical scope of the present application.

Claims

1. A jig for disassembling and assembling adjustable connecting rods of a high-speed train, used for disassembling and assembling the connectors at both ends of the adjustable connecting rod, characterized in that: The adjustable connecting rod is rotatable on the rolling support assembly; the left slide table assembly is arranged on the left side of the rolling support assembly and comprises 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; the left slide table is provided with a first positioning part for positioning a 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 comprises 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; the right slide table is provided with a second positioning part for positioning a connecting head at the right end of the adjustable connecting rod; the disassembly control assembly is located on the rear side of the rolling support assembly and comprises a support, a movable frame, a driving device and a compression wheel; the support is fixed on the base; the movable frame is swingably mounted above the support; the compression wheel is rotatably connected to the front end of the movable frame; the driving device is mounted on the movable frame and connected with the compression wheel at the power output end, for controlling the forward rotation or reverse rotation of the compression wheel.

2. The detachable tool for adjusting the connecting rod of a train according to claim 1, wherein: The rolling support assembly comprises a mounting seat and rollers; the mounting seat is fixed on the base; the mounting seat is provided with two mounting cavities distributed left and right; the left part, the middle part and the right part of the mounting seat are each provided with an emptying recess for avoiding the adjustable connecting rod; the rollers are arranged in four; two rollers distributed front and back are mounted in each mounting cavity.

3. The detachable tool for adjusting the connecting rod of the train according to claim 1, wherein: The first positioning part comprises a first arc-shaped support recess formed on the upper middle part of the left slide table and a clamping groove located on the front and rear sides of the first arc-shaped support recess.

4. The detachable tool for adjusting the connecting rod of a train according to claim 1, wherein: The second positioning part comprises a round hole formed on the middle part of the right slide table and a second arc-shaped support recess located on the left side of the round hole.

5. The tool of claim 1, wherein: The disassembly control assembly further comprises a limiting block; the limiting block is fixed on the base and located below and behind the movable frame.

6. The detachable tool for adjusting the connecting rod of a train according to claim 1, wherein: The movable frame is provided with a boss at the middle part of the bottom; the boss is rotatably connected with the support through a connecting shaft.

7. The tool of claim 1, wherein: The compression wheel is a rubber wheel.

8. The detachable tool for adjusting the connecting rod of a train according to claim 1, wherein: A pressing handle is fixed on the movable frame and extends to the front side of the movable frame.

9. The tool of claim 1, wherein: The first slide frame and the second slide frame are each provided with a scale.

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