Connecting rod bolt disassembling device

Abstract

A connecting rod bolt disassembling device belongs to the technical field of engine assembly. The upper end of the frame body fixing plate is fixedly connected with a horizontally-arranged action air cylinder body, a piston rod of the action air cylinder is fixedly connected with a motor fixing plate, the motor fixing plate is in sliding connection with a fixing plate of the frame body, two motors which are horizontally arranged in parallel are fixed to the motor fixing plate, and an output shaft of each motor is fixedly connected with the corresponding disassembling wrench head. The two disassembling wrenches are both arranged in cooperation with the fixing mechanism, the position sensor is arranged in cooperation with the two disassembling wrenches, and the action air cylinder, the position sensor and the two motors are all in signal transmission connection with the control mechanism. According to the connecting rod bolt disassembling device, manual operation is replaced by automatic operation to complete connecting rod bolt disassembling, auxiliary operation is eliminated, the efficiency and consistency of connecting rod bolt disassembling are improved, the situation that bolts are damaged is reduced, and production efficiency and product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a connecting rod bolt disassembling device and belongs to the engine assembly technical field. BACKGROUND

[0002] As a kind of key mechanical components, connecting rod is widely used in internal combustion engine, compressor, steam engine and many mechanical equipment, and its core function is to realize the conversion between rotary motion and linear reciprocating motion.In engine system, connecting rod plays the important role of connecting crankshaft (or eccentric wheel) and piston (or slider), and realizes the effective transmission of power through this connection.

[0003] Connecting rod in engine is usually composed of connecting rod body, connecting rod cover and connecting rod bolt.Through connecting rod bolt, connecting rod body and connecting rod cover are closely connected to ensure the integrity and stability of structure.In the processing of connecting rod, in order to ensure the cylindricity of connecting rod hole diameter, connecting rod cover and connecting rod body are often tightly assembled together for processing, and the tightening torque of connecting rod bolt has strict process requirements.

[0004] However, before assembling connecting rod pad on engine assembly line, the fastened connecting rod bolt needs to be loosened first, so that connecting rod body and connecting rod cover are separated.At present, this step mainly relies on artificial use of air gun or electric wrench to complete.Taking common four-cylinder engine as an example, 4 connecting rods are needed for each engine, and each connecting rod contains 2 bolts, so 8 bolts need to be manually disassembled in the assembly process of single engine.This operation mode is not only inefficient, difficult to meet the high rhythm demand of modern production line, but also often causes bolt head damage in the process of manual disassembly due to inconsistency of force and angle control, thereby causing a large number of bolts to be scrapped, which brings significant quality risk to production. UTILITY MODEL CONTENTS

[0005] In order to solve the problems in the background art, the utility model provides a connecting rod bolt disassembling device.

[0006] To achieve the above object, the utility model takes the following technical scheme: A connecting rod bolt disassembling device, including frame body, control mechanism, actuating mechanism and fixed mechanism, the actuating mechanism includes action cylinder, motor fixed plate, motor, disassembly wrench and position sensor, the upper end of frame body fixed plate is connected with the cylinder fixedly of horizontally arranged action cylinder, the piston rod of action cylinder is connected with motor fixed plate fixedly, the fixed plate of frame body is connected with motor fixed plate slidingly, two motors that are horizontally arranged are fixed on motor fixed plate, the output shaft of each motor is connected with corresponding disassembly wrench respectively, two disassembly wrenches are cooperated with fixed mechanism, position sensor is cooperated with two disassembly wrenches, action cylinder, position sensor and two motors are connected with control mechanism signal transmission, position sensor, fixed mechanism and control mechanism are fixedly arranged on frame body.

[0007] The fixed plate of motor fixed plate and frame body is connected through guide rail slidingly.

[0008] The output shaft of each motor and corresponding disassembly wrench are equipped with speed reducer.

[0009] The fixed mechanism includes connecting rod big end fixed block and connecting rod small end fixed pin, the fixed plate of frame body is fixed with fixed seat, one end of fixed seat is fixed with connecting rod small end fixed pin, the other end of fixed seat is fixed with connecting rod big end fixed block, the connecting rod big end fixed block is cooperated with two disassembly wrenches.

[0010] The lower end of frame body fixed plate is connected with the cylinder fixedly of horizontally arranged disassembly cylinder, the piston rod of disassembly cylinder is connected with movable block fixedly, the movable block is connected with the fixed plate of frame body slidingly, the upper end of movable block is fixed with connecting rod big end disassembly block, the connecting rod big end disassembly block is cooperated with connecting rod big end fixed block.

[0011] The side of movable block is fixed with receiving box, and the receiving box is located between movable block and disassembly wrench.

[0012] The control mechanism includes switch and PLC module, and the switch and PLC module are fixed on the frame body, and the action cylinder, motor, switch and disassembly cylinder are connected with the PLC module data transmission.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses a bolt disassembly device for connecting rod, which is suitable for bolt disassembly before engine (internal combustion engine) connecting rod assembly. The overall size is 1080*520*870mm; it comprises a frame body 1, a control mechanism, an executing mechanism and a fixing mechanism; the executing mechanism comprises a motion cylinder 3, a motor fixing plate 4, a motor 5, a disassembly wrench 8 and a position sensor 14; the upper end of the fixing plate of the frame body 1 is fixedly connected with the cylinder body of the horizontally arranged motion cylinder 3; the piston rod of the motion cylinder 3 is fixedly connected with the motor fixing plate 4; the motor fixing plate 4 is slidingly connected with the fixing plate of the frame body 1; two horizontally arranged motors 5 are fixed on the motor fixing plate 4; the output shaft of each motor 5 is fixedly connected with a corresponding disassembly wrench 8 through a corresponding shaft coupling 7; the two disassembly wrenches 8 are arranged in cooperation with the fixing mechanism; the position sensor 14 is arranged in cooperation with the two disassembly wrenches 8; the motion cylinder 3, the position sensor 14 and the two motors 5 are signal transmission connected with the control mechanism; the position sensor 14, the fixing mechanism and the control mechanism are fixedly arranged on the frame body 1. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the utility model;

[0016] Figure 2 is Figure 1 a top view of DETAILED DESCRIPTION

[0017] The technical solutions in the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0018] A bolt disassembly device for connecting rod is suitable for bolt disassembly before engine (internal combustion engine) connecting rod assembly. The overall size is 1080*520*870mm; it comprises a frame body 1, a control mechanism, an executing mechanism and a fixing mechanism; the executing mechanism comprises a motion cylinder 3, a motor fixing plate 4, a motor 5, a disassembly wrench 8 and a position sensor 14; the upper end of the fixing plate of the frame body 1 is fixedly connected with the cylinder body of the horizontally arranged motion cylinder 3; the piston rod of the motion cylinder 3 is fixedly connected with the motor fixing plate 4; the motor fixing plate 4 is slidingly connected with the fixing plate of the frame body 1; two horizontally arranged motors 5 are fixed on the motor fixing plate 4; the output shaft of each motor 5 is fixedly connected with a corresponding disassembly wrench 8 through a corresponding shaft coupling 7; the two disassembly wrenches 8 are arranged in cooperation with the fixing mechanism; the position sensor 14 is arranged in cooperation with the two disassembly wrenches 8; the motion cylinder 3, the position sensor 14 and the two motors 5 are signal transmission connected with the control mechanism; the position sensor 14, the fixing mechanism and the control mechanism are fixedly arranged on the frame body 1.

[0019] The motor fixing plate 4 and the fixing plate of the frame body 1 are slidingly connected through the guide rail 2.

[0020] The output shaft of each motor 5 is provided with a speed reducer 6 corresponding to the split wrench 8.

[0021] The fixing mechanism comprises a connecting rod big end fixing block 10 and a connecting rod small end fixing pin 11, which are used for fixing the position of the connecting rod, keeping the position of the connecting rod bolt corresponding to the position of the split wrench 8, and separating the connecting rod body from the connecting rod cover after the bolt is completely disassembled.

[0022] The lower end of the fixed plate of the frame body 1 is fixedly connected with the cylinder body of the horizontal split cylinder 13, the piston rod of the split cylinder 13 is fixedly connected with a movable block, the movable block is slidingly connected with the fixed plate of the frame body 1, the upper end of the movable block is fixedly connected with a connecting rod big end disassembling block 9, and the connecting rod big end disassembling block 9 is correspondingly arranged with the connecting rod big end fixing block 10.

[0023] The side of the movable block is fixedly connected with a material receiving box 17, and the material receiving box 17 is located between the movable block and the split wrench 8. The rotation time of the motor and the action time of the split cylinder are accurately calculated, so that the bolt is completely disassembled, the connecting rod cover and the connecting rod body are smoothly separated, the disassembled connecting rod body is kept on the fixing mechanism, and the connecting rod cover and the bolt fall into the material receiving box, which is convenient for subsequent processing.

[0024] The control mechanism is mainly used for controlling the execution mechanism to disassemble the connecting rod bolt, realizes accurate control of the execution mechanism, and comprises a switch 12 and a PLC module 16.

[0025] The working process of the utility model is as follows:

[0026] 1, the equipment needs to be connected with 220V power supply and 0.4-0.6Mpa compressed air before use;

[0027] 2, the connecting rod (part) is placed on the fixing mechanism, the connecting rod small end corresponds to the connecting rod small end fixing pin 11 of the equipment, the connecting rod big end corresponds to the connecting rod big end fixing block 10 of the equipment, and the two hands are pressed simultaneously after confirming that the connecting rod is stable.

[0028] 3, after the PLC module 16 receives the start instruction transmitted by the switch 12, the preset program is started to be executed, the action cylinder 3 of the execution mechanism moves to the connecting rod position, the position sensor 14 sends a position signal after reaching the position, and the PLC module 16 receives the feedback signal and controls the motor 5 to rotate counterclockwise.

[0029] 4. The rotation of motor 5 drives the disassembly wrench 8 to output torque to disassemble the connecting rod bolt from the connecting rod. The program presets the rotation time of motor 5, which is 0.3 seconds longer than the time after all the threads of the connecting rod bolt are loosened, to ensure that the connecting rod bolt can be completely disassembled from the connecting rod.

[0030] 5. After the motor rotation command time is reached, the motor 5 stops rotating. The PLC module 16 sends a return command to the actuating cylinder 3. The actuating cylinder 3 drives the actuator back to its original position. At the same time, the PLC module 16 sends an action command to the disassembly cylinder 13 of the fixed mechanism. The disassembly cylinder 13 drives the disassembly block (9) of the large end of the connecting rod to move forward to disassemble the connecting rod cover and the connecting rod body. The duration is 2 seconds. Then it returns to its original position, and the entire work cycle ends.

[0031] 6. After disassembly, the connecting rod remains stationary on the fixed mechanism. The connecting rod cover and bolts fall into the receiving box. The operator can then remove the disassembled connecting rod from the equipment and place it at the assembly station.

[0032] This utility model has a reasonable overall structure and layout, with clearly defined functional areas, facilitating maintenance and repair. Its moderate overall size ensures sufficient operating space without occupying excessive area.

[0033] This invention achieves rapid and safe disassembly of connecting rod bolts through a rational structural design and efficient automated control. The intelligence of the control mechanism, the efficiency of the execution mechanism, and the reliability of the fixing mechanism enable this invention to perform excellently in practical applications, improving production efficiency and safety. In the future, further optimization of the control algorithm and the addition of more sensors can enhance the equipment's intelligence and adaptability, making it suitable for bolt disassembly before connecting rod assembly on engine assembly lines. By writing a dedicated PLC program to control the movement of mechanical components, the disassembly of connecting rod bolts and the separation of the connecting rod body and connecting rod cap are achieved, replacing the original manual disassembly.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A connecting rod bolt disassembly device, characterized in that: The system includes a frame (1), a control mechanism, an execution mechanism, and a fixing mechanism. The execution mechanism includes an actuating cylinder (3), a motor fixing plate (4), a motor (5), a disassembly wrench (8), and a position sensor (14). The upper end of the fixing plate of the frame (1) is fixedly connected to the cylinder body of the horizontally arranged actuating cylinder (3). The piston rod of the actuating cylinder (3) is fixedly connected to the motor fixing plate (4). The motor fixing plate (4) is slidably connected to the fixing plate of the frame (1). Two horizontally arranged motors (5) are fixed on the motor fixing plate (4). The output shaft of each motor (5) is fixedly connected to the corresponding disassembly wrench (8). Both disassembly wrenches (8) are configured to cooperate with the fixing mechanism. The position sensor (14) is configured to cooperate with the two disassembly wrenches (8). The actuating cylinder (3), the position sensor (14), and the two motors (5) are all connected to the control mechanism for signal transmission. The position sensor (14), the fixing mechanism, and the control mechanism are all fixedly arranged on the frame (1).

2. The connecting rod bolt disassembly device according to claim 1, characterized in that: The motor fixing plate (4) and the fixing plate of the frame (1) are slidably connected by the guide rail (2).

3. The connecting rod bolt disassembly device according to claim 1, characterized in that: Each of the motors (5) has a speed reducer (6) between its output shaft and the corresponding disassembly head (8).

4. A connecting rod bolt disassembly device according to claim 2 or 3, characterized in that: The fixing mechanism includes a large end fixing block (10) and a small end fixing pin (11) of the connecting rod. A fixing seat is fixed on the fixing plate of the frame (1). One end of the fixing seat is fixed with the small end fixing pin (11) of the connecting rod, and the other end of the fixing seat is fixed with the large end fixing block (10) of the connecting rod. The large end fixing block (10) of the connecting rod is configured to cooperate with two disassembly wrenches (8).

5. A connecting rod bolt disassembly device according to claim 4, characterized in that: The lower end of the frame (1) fixing plate is fixedly connected to the cylinder body of the horizontally arranged decomposition cylinder (13). The piston rod of the decomposition cylinder (13) is fixedly connected to the movable block. The movable block is slidably connected to the fixing plate of the frame (1). The upper end of the movable block is fixed with a connecting rod large end decomposition block (9). The connecting rod large end decomposition block (9) and the connecting rod large end fixing block (10) are correspondingly matched.

6. A connecting rod bolt disassembly device according to claim 5, characterized in that: A receiving box (17) is fixed to the side of the movable block, and the receiving box (17) is located between the movable block and the disassembly head (8).

7. A connecting rod bolt disassembly device according to claim 5, characterized in that: The control mechanism includes a switch (12) and a PLC module (16). The switch (12) and the PLC module (16) are fixed on the frame (1). The actuating cylinder (3), motor (5), switch (12) and disassembly cylinder (13) are all connected to the PLC module (16) for data transmission.

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