Electric locomotive rod piece rubber joint updating method

Abstract

A method for updating a rubber joint of a rod piece of an electric locomotive comprises the following steps: unloading: A, cleaning a matching contact surface of the rod piece and the rubber joint; b, the rod piece and the tool are sequentially placed on a press machine workbench through a crown block; c, the press is started, and the rod piece rubber joints are slowly pressed out; d, withdrawing of the rod piece rubber joints is completed; press fitting comprises the steps of A, cleaning; b, dimension measurement; c, smearing a lubricant; d, press fitting is conducted, specifically, a rod piece rubber joint protruding shaft is placed into an upper through hole of a rod piece press fitting / withdrawing upper die, the position of a rod piece rubber joint is adjusted, and a fixing rod is inserted to fix the position of the rod piece rubber joint; a crown block is used for sequentially placing the tool and the rod piece on a press machine workbench, and the placing sequence is as follows: a rod piece press-fitting / retreating unloading die, the rod piece and a rod piece press-fitting / retreating unloading upper die with a rod piece rubber joint; leveling the rod piece, and starting a press machine to slowly press the rubber joint of the rod piece into the inner hole of the rod piece; and E, after press fitting is in place, the end face of the rubber joint is flush with the end face of the rod piece. And the updating efficiency and quality of the electric locomotive rod piece rubber joint are improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric locomotives, in particular to a method for updating rubber joints of rods of electric locomotives. Background Art

[0002] Rod rubber joints are an important part of electric locomotive rods, and play a role in flexible connection and vibration shock buffering during locomotive operation. During the repair of electric locomotive C6, it is necessary to update the rubber joints at both ends of the rods, including the axle box tie rod, motor hanger rod, connecting rod assembly, etc. In the prior art, the following methods are used to update the rubber joints of locomotive rods: Unloading: Place the rod unloading tool on the press workbench, use the crane and sling to lift the rod to the press workbench tooling, start the press, unload the rubber joint at one end of the rod, then use the crane and sling to turn the rod, and unload the rubber joint at the other end according to the above steps.

[0003] Press-fitting: Apply a layer of lubricant evenly on the inner hole of the rod and the outer circle of the rubber joint, place the rod press-fitting tooling on the workbench of the press, and use the overhead crane and sling to lift the rod to the press workbench tooling; assemble the axle box tie rod rubber joint and press-fitting tooling, use a spirit level to level it, then start the press, slowly press the rod rubber joint into the inner hole of the rod, after pressing into place, the end face of the rubber joint should be flush with the end face of the rod; turn the direction of the rod, press-fit the rubber joint of the other end of the rod according to the above steps to complete the update of the rod rubber joint.

[0004] The existing method for updating the rubber joints of electric locomotive rods requires multiple handling of the rods, which is labor-intensive and has low work efficiency. In addition, the rods are unevenly stressed during the unilateral press-fitting process, which is prone to deformation and dislocation. It cannot ensure that the end faces of the rubber joints at both ends are flush with the end faces of the rods at the same time, thereby reducing the press-fitting quality. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method for updating rubber joints of rods of electric locomotives, thereby improving the efficiency and quality of updating rubber joints of rods of electric locomotives.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a method for updating the rubber joints of electric locomotive rods, comprising a rod press-fitting / removing lower die and a rod press-fitting / removing upper die, the rod press-fitting / removing lower die comprises two connected lower die seats, the lower die seats are provided with lower through holes, the rod press-fitting / removing upper die comprises two connected upper die heads, the upper die heads are provided with upper through holes, the distance between the two lower die seats, the distance between the two upper die heads and the distance between the rubber joints at both ends of the connecting rod are the same, and the updating method specifically comprises the following steps: 1. Unloading A. Clean the dust, steel shot and paint on the contact surface between the rod and the rubber joint; B. Use a crane to place the rod and tooling on the press table in sequence. The placement order is: rod press-fit / remove the lower die, rod, rod press-fit / remove the upper die, so that the rubber joints at both ends of the rod are located between the upper die head and the lower die seat; C. Start the press machine and slowly press out the rod rubber joint. The unloading process must be smooth and slow, and the rod must not be damaged. After the rubber joints of the rods at both ends are completely unloaded, they fall into the lower through holes of the rod pressing / unloading lower die, and the rod is still located between the rod pressing / unloading upper die and the rod pressing / unloading lower die. D. Use the overhead crane to sequentially lift the rod pressing / removing upper die, rod and rubber joint to the corresponding material storage area, thus completing the removal of the rod rubber joint; 2. Pressing A. Cleaning: Use neutral detergent and white cotton cloth to clean the magnetic powder and contrast agent remaining in the motor boom flaw detection; B. Dimension measurement: Use an inside micrometer to measure the inner hole size of the motor suspension rod, and use an outside micrometer to measure the size of the rubber joint of the new rod to be pressed, to ensure that the size of the inner hole of the rod and the rubber joint of the rod meet the requirements; C. Apply lubricant: Apply a layer of lubricant evenly on the inner hole of the rod and the outer circle of the rubber joint before press-fitting; D. Pressing: Place the protruding shaft of the rod rubber joint into the upper through hole of the rod pressing / removing upper die, adjust the position of the rod rubber joint, and insert the fixing rod to fix the position of the rod rubber joint; use the overhead crane to place the tooling and rods on the press workbench in sequence, and the placement order is: rod pressing / removing lower die, rod, and rod pressing / removing upper die with rod rubber joint; level the rod, start the press to slowly press the rod rubber joint into the inner hole of the rod; E. After being pressed into place, the end face of the rubber joint should be flush with the end face of the rod.

[0007] As an improvement, limiting protrusions are provided on both sides of the rod pressing / removing lower die.

[0008] As an improvement, a pin hole penetrating the upper through hole is provided on the side of the upper die head.

[0009] As an improvement, the two upper die heads are connected via a connecting rod, and the connecting rod is connected to the upper die head via threads.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. Simple structure, low cost, convenient assembly and easy operation; 2. With good versatility, one set of tooling can be used for press-fitting and disassembling of the rod rubber joint; 3. The force is more balanced, and the rubber joints at both ends of the rod can be pressed and removed at the same time to ensure balanced force at both ends, effectively reducing the risk of unilateral compression deformation; 4. Improved operating efficiency. Compared with the traditional single-sided press-fitting, the present invention realizes double-sided press-fitting, which greatly reduces the operating time and improves the operating efficiency; 5. The size positioning is convenient. The design of the upper die through-hole can effectively realize the center size and direction positioning of the rubber joint. The lower die can ensure the fixation of the rod. At the same time, the protrusions on both sides of the lower die can effectively prevent the left and right movement of the rod during press-fitting. 6. The size can be adjusted. The threaded connection design of the upper die connecting rod ensures easy disassembly and assembly, and can adjust the center distance of the two rubber joints within a certain range; 7. The press-fitting quality is greatly improved. Compared with unilateral press-fitting, the present invention can effectively ensure that the rubber joints at both ends of the rod are flush with the end surface of the rod when press-fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the tooling.

[0012] Figure 2 This is a schematic diagram of the tooling usage status. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] like Figure 1 , 2 As shown, a method for updating rubber joints of rods of electric locomotives includes a rod press-fitting / removing lower die 2 and a rod press-fitting / removing upper die 1. The rod press-fitting / removing lower die 2 includes two connected lower die seats 21, and the lower die seats 21 are provided with lower through holes. The two sides of the rod press-fitting / removing lower die 2 are provided with limiting protrusions, which can effectively prevent the left and right movement of the rod during press-fitting. The rod press-fitting / removing upper die 1 includes two connected upper die heads 11, and the upper die heads 11 are provided with upper through holes. The two upper die heads 11 are connected by a connecting rod 12, and the connecting rod 12 is connected to the upper die head 11 by threads, which ensures that the disassembly and assembly are convenient, and the center distance of the two rubber joints can be adjusted within a certain range. The distance between the two lower die seats 21, the distance between the two upper die heads 11, and the distance between the rubber joints at both ends of the connecting rod are the same.

[0015] The method for updating the rubber joint 31 of the electric locomotive rod of the present invention specifically comprises the following steps: 1. Unloading A. Clean the dust, steel shot and paint on the contact surface between the rod 3 and the rubber joint 31; B. Use an overhead crane to place the rod 3 and the tooling on the workbench of the press in sequence, in the following order: press-fit / remove the lower die 2, the rod 3, and press-fit / remove the upper die 1, so that the rubber joints 31 at both ends of the rod 3 are located between the upper die head 11 and the lower die base 21; C. Start the press machine and slowly press out the rod rubber joint 31. The unloading process must be smooth and slow, and the rod 3 must not be damaged. After the rod rubber joints 31 at both ends are completely unloaded, they fall into the lower through hole of the rod pressing / unloading lower die 2, and the rod 3 is still located between the rod pressing / unloading upper die 1 and the rod pressing / unloading lower die 2. D. Use an overhead crane to sequentially lift the rod pressing / removing upper die 1, rod 3 and rubber joint 31 to the corresponding material storage area, thus completing the removal of the rod rubber joint 31; 2. Pressing A. Cleaning: Use a neutral detergent and white cotton cloth to clean the magnetic powder and contrast agent remaining from the motor boom flaw detection.

[0016] B. Dimension measurement: Use an inside micrometer to measure the inner hole size of the motor suspension rod, and use an outside micrometer to measure the size of the rubber joint of the new rod to be pressed, to ensure that the size of the inner hole of the rod and the rubber joint of the rod meet the requirements; C. Apply lubricant: Apply a layer of lubricant evenly on the inner hole of the rod and the outer circle of the rubber joint before press-fitting; D. Pressing: Place the protruding shaft of the rod rubber joint 31 into the upper through hole of the rod pressing / removing upper die 1, adjust the position of the rod rubber joint 31, insert the fixing rod from the pin hole to fix the position of the rod rubber joint 31; use the overhead crane to place the tooling and the rod 3 on the press machine workbench in sequence, and the placement order is: rod pressing / removing lower die 2, rod 3, rod pressing / removing upper die 1 with rod rubber joint 31; level the rod, start the press machine to slowly press the rod rubber joint into the inner hole of the rod; E. After being pressed into place, the end face of the rubber joint should be flush with the end face of the rod.

Claims

1. A method for updating rubber joints of electric locomotive rods, characterized in that: It comprises a rod press-fitting / removing lower die and a rod press-fitting / removing upper die, wherein the rod press-fitting / removing lower die comprises two connected lower die seats, the lower die seats are provided with lower through holes, and the rod press-fitting / removing upper die comprises two connected upper die heads, the upper die heads are provided with upper through holes, the distance between the two lower die seats, the distance between the two upper die heads, and the distance between the rubber joints at both ends of the connecting rod are the same, and the updating method specifically comprises the following steps:

1. Unloading A. Clean the dust, steel shot and paint on the contact surface between the rod and the rubber joint; B. Use a crane to place the rod and tooling on the press table in sequence. The placement order is: rod press-fit / remove the lower die, rod, rod press-fit / remove the upper die, so that the rubber joints at both ends of the rod are located between the upper die head and the lower die seat; C. Start the press machine and slowly press out the rod rubber joint. The unloading process must be smooth and slow, and the rod must not be damaged. After the rubber joints of the rods at both ends are completely unloaded, they fall into the lower through holes of the rod pressing / unloading lower die, and the rod is still located between the rod pressing / unloading upper die and the rod pressing / unloading lower die. D. Use the overhead crane to sequentially lift the rod pressing / removing upper die, rod and rubber joint to the corresponding material storage area, thus completing the removal of the rod rubber joint; 2. Pressing A. Cleaning: Use neutral detergent and white cotton cloth to clean the magnetic powder and contrast agent remaining in the motor boom flaw detection; B. Dimension measurement: Use an inside micrometer to measure the inner hole size of the motor suspension rod, and use an outside micrometer to measure the size of the rubber joint of the new rod to be pressed, to ensure that the size of the inner hole of the rod and the rubber joint of the rod meet the requirements; C. Apply lubricant: Apply a layer of lubricant evenly on the inner hole of the rod and the outer circle of the rubber joint before press-fitting; D. Pressing: Place the protruding shaft of the rod rubber joint into the upper through hole of the rod pressing / removing upper die, adjust the position of the rod rubber joint, and insert the fixing rod to fix the position of the rod rubber joint; use the overhead crane to place the tooling and rods on the press workbench in sequence, and the placement order is: rod pressing / removing lower die, rod, and rod pressing / removing upper die with rod rubber joint; level the rod, start the press to slowly press the rod rubber joint into the inner hole of the rod; E. After being pressed into place, the end face of the rubber joint should be flush with the end face of the rod.

2. The method for updating rubber joints of electric locomotive rods according to claim 1, characterized in that: Limiting protrusions are arranged on both sides of the rod pressing / removing lower die.

3. The method for updating rubber joints of electric locomotive rods according to claim 1, characterized in that: A pin hole penetrating the upper through hole is arranged on the side of the upper die head.

4. The method for updating rubber joints of electric locomotive rods according to claim 1, characterized in that: The two upper die heads are connected via a connecting rod, and the connecting rod is connected to the upper die head via threads.

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