A diesel engine parts assembly device

Abstract

The application discloses a diesel engine part assembling device, in particular to the technical field of precise assembling of diesel engines, which comprises a base frame, a clamping mechanism and a crane assembly, a driving wheel is rotationally connected to the middle part of the base frame, a conveying belt is installed on the surface of the driving wheel, gantry struts are symmetrically and fixedly connected to the two sides of the base frame, a guide cross beam is fixedly connected to the top of the gantry struts through flanges, the crane assembly is fixedly installed on the top of the guide cross beam, and the clamping mechanism is fixedly installed in the middle part of the gantry struts. The crane fixing seat is firmly locked to the upper end face of the installation top frame, the motor drives the output winding drum to complete the forward and reverse rotation when the motor is running, the speed and the lifting length of the steel wire lifting rope are controlled, the adjusting mechanism can flexibly set and rigidly limit the up and down limit stroke of the lifting and lowering, and the problem that the existing lifting mechanism is not provided with an adjustable stroke limiting structure and cannot adapt to the lifting height requirements of parts of multiple specifications is solved.

Description

Technical Field

[0001] This application relates to the field of precision assembly technology for diesel engines, and more specifically, to a diesel engine parts assembly device. Background Technology

[0002] Diesel engines are power equipment used in commercial vehicles, construction machinery, and stationary generator sets. Component assembly is a core process in the production of these engines, and the degree of standardization and positioning accuracy of the assembly directly determines the engine's power performance, operational stability, and reliability throughout its entire lifecycle. Diesel engine assembly involves the positioning, docking, and compliant assembly of multiple precision core components such as the cylinder block, crankshaft, connecting rod, and piston. As the industry's demand for high power, low emissions, and high reliability in diesel engines continues to increase, the standardization, efficiency, and precision of engine component assembly have become the core direction of industry development. Existing publication number CN119952458A discloses a diesel engine parts assembly device, including a frame. The frame is equipped with a conveying mechanism for transporting workpieces. The frame also has multiple tightening mechanisms corresponding one-to-one with the threaded holes on the workpieces. Each tightening mechanism includes a cylinder, a rotating shaft, and a clamping assembly. The rotating shaft is located inside the cylinder and coaxially arranged with it. Both the cylinder and the rotating shaft are vertically engaged with the frame. The rotating shaft is also helically engaged with the cylinder, and at the end of its stroke with the cylinder, it rotates with the cylinder. The clamping assembly is located at the lower end of the rotating shaft and is used to movably clamp the end of a bolt. This improves the tightening quality and efficiency of the tightening operation on the diesel engine bolts. In the process of developing this application, the inventors discovered the following problems with the prior art: Existing diesel engine parts assembly and hoisting mechanisms generally lack adjustable hoisting stroke limit structures, making them unsuitable for the hoisting height requirements of heavy parts of different specifications. They also lack lateral limit structures for the wire ropes, which can cause the ropes to swing significantly during hoisting, resulting in insufficient alignment accuracy of the parts. Furthermore, the hooks lack automatic reset and locking anti-detachment structures, making it easy for heavy parts to slip off during hoisting, posing significant operational safety hazards. Therefore, a diesel engine parts assembly device is proposed to address the above problems. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, this application provides a diesel engine parts assembly device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application provides the following technical solution: a diesel engine parts assembly device, including a base frame, a conveyor belt, a clamping mechanism, and a crane assembly. Multiple drive wheels with self-locking functions are rotatably connected to the center of the base frame. A conveyor belt is mounted on the surface of each drive wheel, and the conveyor belt has anti-slip textures on its surface and anti-deviation guards on both sides. Gantry columns are symmetrically fixed to both sides of the base frame. A guide beam is fixed to the top of each gantry column via a flange. A crane assembly for hoisting heavy engine parts is fixedly installed on the top of the guide beam. A clamping mechanism for clamping and positioning the engine housing is fixedly installed in the center of each gantry column. The clamping stroke of the clamping mechanism is 0-500mm. The hoisting motor is electrically connected to a controller, which can set a hoisting weight threshold. When the threshold is exceeded, the motor power is automatically cut off to achieve overload protection.

[0005] By adopting the above technical solution, the functions of conveyor belt for conveying parts, crane assembly for lifting heavy parts, and clamping mechanism for holding precision parts are integrated into the base frame. The self-locking drive wheel enables flexible multi-station transfer, adapts to the assembly of various engine parts, improves assembly efficiency, and ensures the stability and accuracy of assembly standards.

[0006] Preferably, the base frame is fixedly connected to both the front and rear ends along the conveyor belt conveying direction, and the guide frame is triangular inclination with an inclination angle of 30°-45°; multiple parallel rotating rods are horizontally inserted between the left and right side plates of the guide frame, and the rotating rods are rotatably connected in the middle of the guide frame. Conveying rollers are interference-fitted on the multiple rotating rods, and the upper end face of the multiple conveying rollers is flush with the upper conveying surface of the conveyor belt. The conveying rollers are driven by the conveyor belt and are used to assist in the loading and unloading of heavy parts such as diesel engine cylinder blocks. The surface of the conveying rollers is covered with wear-resistant rubber sleeves.

[0007] By adopting the above technical solution, the triangular inclined guide frames at both ends of the base frame and the conveyor rollers on the rotating rod are used to form a seamless transition conveyor surface that is flush with the conveyor belt, thereby reducing the pushing resistance of heavy parts and avoiding damage to the parts from collisions.

[0008] Preferably, the crane assembly includes a hoisting motor, a wire rope, and a hook. A mounting frame is fixedly connected to the top of the gantry column. The hoisting motor is fixed to the top of the mounting frame by a crane mounting seat bolt. A wire rope is wound on the output drum of the hoisting motor. The wire rope passes downward through the mounting frame and the guide beam, and the end of the wire rope is fixedly connected to a hook for hanging the hoisted parts by a shackle. An adjustment mechanism for adjusting the hoisting stroke of the hoisting motor is provided on the top of the guide beam.

[0009] By adopting the above technical solution, the hoisting motor on the mounting frame is used as the driving core. The hoisting hook is driven by the winding and unwinding of the steel wire rope to achieve the smooth lifting and lowering of heavy parts. The hoisting stroke is controlled by the adjustment mechanism, which can adapt to the hoisting of parts of different sizes, ensure smooth hoisting without impact, and avoid damage to the surface of the parts.

[0010] Preferably, a locking member is hinged to the opening of the hook via a hinge shaft. A return torsion spring is provided between the locking member and the hinge shaft. The torque of the return torsion spring is 5-10 N·m. The free end of the locking member is fixedly connected to a limiting end that engages with a groove on the inside of the hook opening. Under normal conditions, the locking member closes the opening of the hook to prevent the parts from falling off during hoisting.

[0011] By adopting the above technical solution, a locking component with a return torsion spring is installed at the opening of the hook. After the part is hooked, the locking component can automatically spring back to close the opening. The locking is reliably locked by the engagement of the limiting end and the slot, eliminating the risk of the part slipping off the hook during hoisting.

[0012] Preferably, the adjusting mechanism includes an adjusting plate and adjusting blocks; the adjusting plate is fixedly connected to the top of the guide beam, and a sliding groove is opened laterally on the top of the adjusting plate. A pair of adjusting blocks are slidably connected in the sliding groove. The gap between the adjusting blocks and the sliding groove is ≤0.1mm. A rope through hole for the steel wire rope to pass through is opened in the middle of the adjusting plate. Multiple sets of positioning pin holes are opened on the top of the adjusting plate. A limiting pin that is inserted into the positioning pin hole is passed through the top of the adjusting block. The limiting pin has an anti-disengagement spring and is used to lock the sliding position of the adjusting block to limit the spacing of the steel wire rope.

[0013] By adopting the above technical solution, the distance between the two sets of adjusting blocks can be flexibly adjusted along the slide groove on the adjusting plate. The position can be quickly locked by the cooperation of the limiting pin and the positioning pin hole, forming a lateral limit on the wire rope and suppressing the large swing of the rope during hoisting.

[0014] Preferably, the gantry support is fixedly connected to a fixing buckle on its side wall, and a safety rope for preventing falls is fixedly connected to the middle of the fixing buckle. The free end of the safety rope is connected to another fixing buckle to provide secondary protection for the heavy parts of the engine.

[0015] By adopting the above technical solution, a safety rope is set with the fixing buckle on the gantry column as the anchor point, providing secondary protection for the hoisted heavy parts. When the main hoisting structure is broken or loosened, the safety rope can catch the falling parts, avoid damage to the parts and safety accidents, and improve the safety of the device.

[0016] Preferably, the clamping mechanism includes a controller, electric push rods, and clamping blocks. The controller is installed on the side wall of the gantry column. Electric push rods are symmetrically installed at the middle position of a pair of gantry columns. The synchronization error of the electric push rods is ≤0.5mm. The control output end of the controller is electrically connected to the control end of the electric push rods. Clamping blocks for clamping parts are fixedly connected to the telescopic ends of both sets of electric push rods.

[0017] By adopting the above technical solution, the controller synchronously controls two sets of symmetrically arranged electric push rods, which drive the clamping blocks to complete synchronous opposite movements, thereby achieving the centered clamping and positioning of the parts to be assembled. The clamping stroke and clamping force can be precisely adjusted to ensure that there is no displacement deviation during the assembly process, effectively improving the assembly accuracy.

[0018] Preferably, a rubber pad is bonded and fixed to the clamping surface of the clamping block, and the clamping surface of the rubber pad is integrally formed with an anti-slip mesh pattern to avoid scratching the surface of the part during clamping. A pressure sensor is embedded inside the clamping block, and the pressure sensor is electrically connected to the controller to monitor the clamping force in real time and avoid excessive clamping that could damage the part.

[0019] By adopting the above technical solution, a rubber pad with anti-slip grid texture is set on the clamping surface of the clamping block. When clamping, it can adapt to the surface shape of the part through its own elastic deformation, isolate the rigid contact between the metal clamping block and the part, effectively avoid scratches and wear on the precision mating surface of the part, and at the same time increase the clamping friction and improve the anti-slip performance.

[0020] Preferably, the outer surface of the electric actuator is fully covered with a wear-resistant elastic cloth. The two ends of the elastic cloth are fixed to the clamping block and the side wall of the gantry support by pressure rings, which is used to prevent dust and other impurities from entering the middle of the electric actuator. A 5-10mm extension allowance is left between the elastic cloth and the electric actuator.

[0021] By adopting the above technical solution, the outer surface of the electric actuator is fully covered with wear-resistant elastic cloth. The elastic cloth can deform synchronously with the extension and retraction of the electric actuator, always maintaining a full seal around the moving parts of the electric actuator, isolating dust and oil stains during assembly, avoiding impurities from affecting the operating accuracy, and extending the service life of the electric actuator.

[0022] The technical effects and advantages of this application are as follows: 1. Compared with the prior art, in this diesel engine parts assembly device, the hoisting motor is firmly locked to the upper end face of the mounting frame through the crane fixing seat. When the motor is running, it drives the output drum to complete forward and reverse rotation, controlling the winding and unwinding speed of the wire rope and the lifting length. The adjustment mechanism can flexibly set and rigidly limit the upper and lower limit strokes of the hoisting, which can adapt to the hoisting height requirements of heavy diesel engine parts of different sizes. This solves the problem that the existing hoisting mechanism does not have an adjustable stroke limit structure and cannot adapt to the hoisting height requirements of parts of various specifications.

[0023] 2. Compared with the prior art, in this diesel engine parts assembly device, the opening of the hook is hinged with a locking component with a return torsion spring via a hinge shaft. During parts hanging operations, pressing the locking component opens the hook opening to complete the parts hanging. After hanging, the return torsion spring provides a continuous return preload force, causing the locking component to automatically spring back and reset. The limiting end of its free end is tightly engaged with the inner groove of the hook, forming a closed and anti-detachment lifting and hanging space. This solves the problems of existing lifting mechanisms where the hook lacks an automatic return locking and anti-detachment structure, heavy parts are prone to slippage during lifting, and there are significant operational safety hazards.

[0024] 3. Compared with the prior art, the sliding groove opened on the top of the adjusting plate in this diesel engine parts assembly device provides a stable linear sliding guide for the adjusting blocks. The relative distance between the two sets of adjusting blocks can be flexibly adjusted along the sliding groove according to the hoisting position of the wire rope. After adjustment, the position is quickly locked by the insertion and cooperation of the limiting pin and the positioning pin hole, forming a double-sided limiting constraint on the wire rope. This solves the problem that the existing hoisting mechanism lacks a lateral limiting structure for the wire rope and that the large swing of the hoisting rope during hoisting leads to insufficient alignment accuracy of the parts assembly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the conveyor belt structure of this application; Figure 3 This is a schematic diagram of the structure of the conveying roller in this application; Figure 4 This is a structural schematic diagram of the crane assembly of this application; Figure 5 This is a structural schematic diagram of the hoisting motor of this application; Figure 6 This is a schematic diagram of the hook structure of this application; Figure 7 This is a schematic diagram of the regulating mechanism of this application; Figure 8 This is a schematic diagram of the structure of the safety rope in this application; Figure 9 This is a schematic diagram of the structure of the elastic fabric of this application; Figure 10 This is a schematic diagram of the clamping mechanism of this application.

[0026] The attached diagram is labeled as follows: 1. Base frame; 11. Drive wheel; 12. Conveyor belt; 13. Gantry support; 14. Clamping mechanism; 15. Guide beam; 16. Hoist assembly; 2. Guide frame; 21. Rotating rod; 22. Conveyor roller; 3. Mounting top frame; 31. Hoist fixing seat; 32. Hoisting motor; 33. Steel wire rope; 34. Hook; 35. Adjusting mechanism; 4. Locking element; 41. Limiting end; 5. Adjusting plate; 51. Slide groove; 52. Adjusting block; 53. Hoisting rope hole; 54. Positioning pin hole; 55. Limiting pin; 6. Fixing buckle; 61. Safety rope; 7. Controller; 71. Electric push rod; 72. Clamping block; 8. Rubber pad; 9. Elastic cloth. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] Example 1 As attached Figures 1 to 10 The diesel engine parts assembly device shown includes a base frame 1, a conveyor belt 12, a clamping mechanism 14, and a crane assembly 16. Multiple self-locking drive wheels 11 are rotatably connected to the center of the base frame 1. The conveyor belt 12 is mounted on the surface of the drive wheels 11. Gantry columns 13 are symmetrically fixed to both sides of the base frame 1. A guide beam 15 is fixed to the top of the gantry column 13 via a flange. A crane assembly 16 for hoisting heavy engine parts is fixedly installed on the top of the guide beam 15. A clamping mechanism 14 for clamping and positioning the engine housing is fixedly installed in the center of the gantry column 13. The clamping stroke of the clamping mechanism 14 is 0-500mm.

[0029] The entire machine is based on the base frame 1 as the core support. The drive wheel 11 with self-locking function can drive the device to complete the transfer between multiple workstations. After the device is in place, it triggers the self-locking to ensure that there is no displacement deviation of the whole machine during the assembly operation. The gantry columns 13 symmetrically arranged on both sides provide stable vertical support for the guide beam 15. The guide beam 15 provides a rigid installation benchmark for the crane assembly 16. The crane assembly 16 completes the smooth hoisting of heavy core parts. The clamping mechanism 14 realizes the auxiliary centering and clamping positioning of the parts. This structure integrates the functions of conveying, hoisting and clamping, improving the operation efficiency and scenario adaptability of diesel engine parts assembly.

[0030] Example 2 Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 10 As shown below, see details: In a preferred embodiment, triangular inclined guide frames 2 are provided at both ends of the base frame 1 along the conveying direction. The inclination angle of the guide frames 2 is 30°-45°. The rotating rod 21 is horizontally inserted between the two side plates of the guide frame 2, providing stable rotational support for the conveying roller 22. The conveying roller 22 can rotate freely around the rotating rod 21, and its upper end face is flush with the upper conveying surface of the conveyor belt 12, forming a continuous conveying transition surface without height difference. When loading and unloading heavy parts, the surface of the conveying roller 22 is covered with a wear-resistant rubber sleeve, which can replace the traditional sliding friction through the rolling friction of the conveying roller 22, greatly reducing the pushing resistance of the parts and effectively avoiding jamming and collision damage when loading and unloading heavy parts.

[0031] In a preferred embodiment, the mounting bracket 3 at the top of the gantry column 13 provides a high-level installation reference for the hoisting motor 32. The hoisting motor 32 is electrically connected to the controller 7. The controller 7 can set a hoisting weight threshold. When the threshold is exceeded, the motor power is automatically cut off to achieve overload protection. The crane mounting base 31 securely locks the hoisting motor 32 to the mounting bracket 3 to prevent vibration and displacement during motor operation. When the hoisting motor 32 is running, it drives the output drum to rotate in both directions, realizing the smooth winding and unwinding of the wire rope 33, thereby driving the hook 34 to complete the precise lifting action. The adjustment mechanism 35 can precisely limit and adjust the hoisting stroke to adapt to the hoisting needs of parts of different sizes.

[0032] In a preferred embodiment, a locking member 4 is hinged at the opening of the hook 34 via a hinge shaft. A return torsion spring fitted at the hinge shaft provides a continuous return preload force to the locking member 4. The torque of the return torsion spring is 5-10 N·m. When the part is attached, the locking member 4 can be pressed to open the opening of the hook 34. After the attachment is completed, the locking member 4 is released, and the return torsion spring causes the locking member 4 to automatically spring back. The limiting end 41 of its free end is precisely engaged in the slot on the inner side of the hook 34, forming a closed hoisting and attachment space, preventing the attachment from coming off, and eliminating the safety hazard of the attachment slipping off during the hoisting process.

[0033] In a preferred embodiment, the groove 51 on the adjusting plate 5 provides a stable linear sliding guide for the adjusting block 52. The inner wall of the groove 51 is coated with wear-resistant grease according to the hoisting position of the wire rope 33. The gap between the adjusting block 52 and the groove 51 is ≤0.1mm. The relative distance between the two sets of adjusting blocks 52 is adjusted by sliding along the groove 51. After adjustment, the limiting pin 55 is inserted into the corresponding positioning pin hole 54 to lock the position of the block. The limiting pin 55 is equipped with an anti-disengagement spring. The two sets of adjusting blocks 52 form a lateral limit on the wire rope 33, suppressing the large swing of the wire rope 33 during hoisting and improving the stability of the part hoisting and positioning.

[0034] As a preferred embodiment, a fixing buckle 6 is provided on the side wall of the gantry support 13 to provide a firm anchor point for the safety rope 61. The two ends of the safety rope 61 are firmly connected to the fixing buckles 6 on the two sides of the gantry support 13 to form a stable protective structure. During hoisting operations, the safety rope 61 can pass through the hoisting hole of the part or be connected to the matching hoisting fixture. When the wire rope 33 breaks or becomes loose, the safety rope 61 can instantly catch the falling part, preventing the part from falling and being damaged, and improving the operational safety of the device.

[0035] In a preferred embodiment, the controller 7 serves as the centralized control core for the clamping action. The electric push rods 71 ​​installed on the two sets of gantry pillars 13 provide a stable driving force for the clamping action. The controller 7 can synchronously control the extension stroke and extension speed of the two sets of electric push rods 71. The synchronization error of the electric push rods 71 ​​is ≤0.5mm, which drives the clamping blocks 72 to complete synchronous opposite or opposite movements, realizing the centering clamping and release action of the parts. At the same time, the clamping stroke and clamping force can be adjusted according to the size and specifications of the parts to be clamped, ensuring the coaxiality of the parts clamping and the stability of the assembly process, and avoiding displacement deviation of the parts.

[0036] In a preferred embodiment, a rubber pad 8 is provided on the clamping end face of the clamping block 72. The rubber pad 8 is firmly bonded to the clamping block 72 by heat vulcanization. The anti-slip grid pattern integrally formed on its clamping surface can effectively increase the friction coefficient with the contact surface of the part. During the clamping operation, the rubber pad 8 can adapt to the slight curvature and unevenness of the part surface through its own elastic deformation, increasing the clamping contact area. At the same time, it isolates the direct rigid contact between the clamping block 72 and the part, avoiding scratches and wear on the precision mating surfaces of the part during the clamping process. A pressure sensor is embedded inside the clamping block 72. The pressure sensor is electrically connected to the controller 7, which can monitor the clamping force in real time and avoid damage to the part due to excessive clamping.

[0037] In a preferred embodiment, the outer surface of the electric actuator 71 is fully covered with a wear-resistant elastic cloth 9. The two ends of the elastic cloth 9 are firmly fixed to the side wall of the clamping block 72 and the corresponding side wall of the gantry column 13, respectively. When the electric actuator 71 is extended or retracted, the elastic cloth 9 can stretch and contract synchronously with the extension and retraction of the electric actuator 71, always maintaining a fully enclosed and sealed state for the extension screw of the electric actuator 71, effectively isolating dust, debris and oil stains generated during the assembly process, preventing impurities from entering the moving parts of the electric actuator 71, extending the service life of the electric actuator 71, and leaving a 5-10mm extension allowance between the elastic cloth 9 and the electric actuator 71.

[0038] The working process of this application is as follows: When the diesel engine parts assembly device is working, the device is first moved to the target assembly station by the drive wheel 11 at the bottom of the base frame 1. The self-locking function of the drive wheel 11 is triggered to fix the whole machine and prevent the device from shifting during operation. The heavy basic parts such as the diesel engine cylinder block to be assembled are transferred by the guide frame 2 at the front and rear ends of the base frame 1. The inclined guide frame 2 reduces the pushing resistance of heavy parts through the conveyor roller 22 on the rotating rod 21, and assists the parts to be smoothly transferred to the conveyor belt 12. The conveyor belt 12 is driven by the drive wheel 11 to accurately transport the parts to be assembled to the assembly reference position in the middle of the device. Then, according to the lateral spacing of the parts, the distance between the two sets of adjusting blocks 52 is adjusted by the slide groove 51 on the adjusting plate 5. The limit pin 55 is inserted into the corresponding positioning pin hole 54 to lock and ensure the stability of the assembly reference.

[0039] In the assembly of heavy core components, the crane assembly 16 is started, and the hoisting motor 32 on the mounting frame 3 rotates in the forward direction. The output drum unwinds the wire rope 33, driving the hook 34 to descend smoothly to the part to be hoisted. After the part is hooked, the locking piece 4 at the opening of the hook 34 automatically resets under the action of the return torsion spring. The limiting end 41 is engaged in the inner groove of the hook 34, closing the hoisting opening and preventing the part from falling off during hoisting. The hoisting motor 32 rotates in the reverse direction to rewind the wire rope 33, lifting the part smoothly to the assembly height. The adjusting block 52 of the adjusting mechanism 35 forms a lateral limit on the wire rope 33, preventing the part from swinging significantly during hoisting. With the guiding action of the guide beam 15, the part is accurately positioned and lowered, completing the assembly docking with the cylinder. The safety rope 61 is hung in the lifting hole of the part throughout the process to provide secondary fall protection for the hoisting operation.

[0040] During the part alignment and assembly process, the clamping mechanism 14 operates synchronously. The controller 7 sends control signals to the symmetrically arranged electric push rods 71, driving the two sets of electric push rods 71 ​​to move the clamping blocks 72 towards each other, achieving centered clamping and positioning of the engine casing or precision parts. The rubber pads 8 on the clamping surfaces of the clamping blocks 72 increase the clamping friction through the anti-slip mesh texture, while avoiding scratching the precision mating surfaces of the parts. The elastic cloth 9 covering the electric push rods 71 ​​can isolate metal dust and debris generated during the assembly process, protecting the movement accuracy and service life of the electric push rods 71. After a single assembly process is completed, the clamping mechanism 14 is released, and the conveyor belt 12 starts again, sending the assembled semi-finished product out of the workstation through the guide frame 2, adapting to multi-station continuous assembly operations. The above is the working principle of this diesel engine parts assembly device.

Claims

1. A diesel engine parts assembly device, comprising a base frame (1), a conveyor belt (12), a clamping mechanism (14), and a crane assembly (16), characterized in that: The base frame (1) is rotatably connected to a number of drive wheels (11) with self-locking function. A conveyor belt (12) is installed on the surface of the drive wheel (11). The surface of the conveyor belt (12) is provided with anti-slip texture, and anti-deviation guards are provided on both sides of the conveyor belt (12). Gantry columns (13) are symmetrically fixed on both sides of the base frame (1). A guide beam (15) is fixed to the top of the gantry column (13) through a flange. A crane assembly (16) for hoisting heavy engine parts is fixedly installed on the top of the guide beam (15). A clamping mechanism (14) for clamping and positioning the engine housing is fixedly installed in the middle of the gantry column (13).

2. The diesel engine parts assembly device according to claim 1, characterized in that: The base frame (1) is fixed with guide frames (2) at both ends along the conveying direction of the conveyor belt (12), and the guide frames (2) are triangular inclinations with an inclination angle of 30°-45°. Multiple parallel rotating rods (21) are horizontally inserted between the left and right side plates of the guide frame (2), and the rotating rods (21) are rotatably connected in the middle of the guide frame (2). Multiple rotating rods (21) are interference-fitted with conveying rollers (22). The upper end face of multiple conveying rollers (22) is flush with the upper conveying surface of the conveyor belt (12), and the conveying rollers (22) are driven by the conveyor belt (12). The surface of the conveying rollers (22) is covered with wear-resistant rubber sleeves.

3. The diesel engine parts assembly device according to claim 1, characterized in that: The crane assembly (16) includes a hoisting motor (32), a wire rope (33), and a hook (34). The top of the gantry column (13) is fixedly connected to a mounting frame (3). The top of the mounting frame (3) is fixedly connected to the hoisting motor (32) by bolts through the crane mounting base (31). The output drum of the hoisting motor (32) is wound with a wire rope (33). The wire rope (33) passes downward through the mounting frame (3) and the guide beam (15). The end of the wire rope (33) is fixedly connected to a hook (34) for hanging the hoisting parts by a shackle. The top of the guide beam (15) is provided with an adjustment mechanism (35) for adjusting the hoisting stroke of the hoisting motor (32).

4. The diesel engine parts assembly device according to claim 3, characterized in that: The opening of the hook (34) is hinged to a locking member (4) via a hinge shaft. A return torsion spring is provided between the locking member (4) and the hinge shaft. The torque of the return torsion spring is 5-10 N·m. The free end of the locking member (4) is fixedly connected to a limiting end (41) that engages with the groove inside the opening of the hook (34). Under normal conditions, the locking member (4) closes the opening of the hook (34) to prevent the parts from falling off during the hoisting process.

5. A diesel engine parts assembly device according to claim 3, characterized in that: The adjustment mechanism (35) includes an adjustment plate (5) and an adjustment block (52); the top of the guide beam (15) is fixedly connected to the adjustment plate (5), the top of the adjustment plate (5) is provided with a horizontal groove (51), a pair of adjustment blocks (52) are slidably connected in the groove (51), the gap between the adjustment block (52) and the groove (51) is ≤0.1mm, the middle part of the adjustment plate (5) is provided with a rope through hole (53) for the steel wire rope (33) to pass through, the top of the adjustment plate (5) is provided with multiple sets of positioning pin holes (54), the top of the adjustment block (52) is provided with a limiting pin (55) that is inserted and cooperates with the positioning pin hole (54), the limiting pin (55) is equipped with an anti-disengagement spring, which is used to lock the sliding position of the adjustment block (52) and realize the spacing limit of the steel wire rope (33).

6. The diesel engine parts assembly device according to claim 1, characterized in that: The side wall of the gantry support (13) is fixed with a buckle (6), and a safety rope (61) for preventing falls is fixed in the middle of the buckle (6). The free end of the safety rope (61) is connected to another buckle (6).

7. A diesel engine parts assembly device according to claim 3, characterized in that: The clamping mechanism (14) includes a controller (7), an electric push rod (71), and a clamping block (72). The controller (7) is installed on the side wall of the gantry column (13). A pair of electric push rods (71) are symmetrically installed at the middle position of the gantry column (13). The synchronization error of the electric push rod (71) is ≤0.5mm. The control output end of the controller (7) is electrically connected to the control end of the electric push rod (71). The telescopic ends of the two sets of electric push rods (71) are fixed with clamping blocks (72) for clamping parts. The clamping stroke of the clamping mechanism (14) is 0-500mm. The hoisting motor (32) is electrically connected to the controller (7).

8. A diesel engine parts assembly device according to claim 7, characterized in that: The clamping surface of the clamping block (72) is bonded with a rubber pad (8). The clamping surface of the rubber pad (8) is integrally formed with an anti-slip mesh pattern to avoid scratching the surface of the part during clamping. A pressure sensor is embedded inside the clamping block (72) and is electrically connected to the controller (7).

9. A diesel engine parts assembly device according to claim 7, characterized in that: The outer surface of the electric actuator (71) is fully covered with wear-resistant elastic cloth (9). The two ends of the elastic cloth (9) are fixed to the side wall of the clamping block (72) and the gantry support (13) by pressure rings, respectively, to prevent dust and other impurities from entering the middle of the electric actuator (71). A 5-10mm extension allowance is left between the elastic cloth (9) and the electric actuator (71).

Images