Hoisting and mounting device for main engine shock absorber on ship

Abstract

The on-board hoisting and mounting device comprises a hoisting point hook, a balance hoisting mechanism is arranged at the lower end of the hoisting point hook, the balance hoisting mechanism comprises a position adjusting assembly and a balance hoisting tool, the position adjusting assembly is fixed to the lower end of the hoisting point hook, and the balance hoisting tool is slidably connected into the position adjusting assembly; a side pull ring is fixed to the bottom of the balance lifting appliance, and the surface of the side pull ring is sleeved with a side pull chain. The device can adapt to the size, shape and gravity center changes of shock absorbers of different specifications, the lifting appliance does not need to be replaced when a lifting object is replaced, adaptation can be completed only through simple mechanical adjustment, and the operation preparation time is greatly saved; in a limited space operation scene, the hoisting posture such as the inclination angle and the horizontal height of the shock absorber can be flexibly adjusted through the position adjusting function of the position adjusting assembly, it is ensured that the shock absorber can smoothly avoid obstacles in a ship cabin and accurately reach the target installation position, and the success rate of operation in a narrow area is effectively increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the hoisting technical field, specifically to a main engine shock absorber on-board hoisting installation device. BACKGROUND

[0002] The main engine, as the core power equipment of the ship, its running stability directly affects the navigation safety and service life of the ship. The main engine shock absorber, as the key component to suppress the transmission of the main engine vibration and reduce noise pollution, plays an important role in the installation of the ship power system. Due to the narrow space of the ship engine room, the dense layout of the equipment, and the precise structure size and specific installation attitude requirements of the main engine shock absorber, the on-board installation process needs to meet the multiple requirements of positioning accuracy, hoisting stability and operation safety. At present, the on-board installation of the main engine shock absorber mainly relies on the traditional hoisting tool and manual auxiliary cooperation. The shock absorber hoisting point is directly connected by a sling, the hoisting action is completed by a crane, and then the operator adjusts the attitude of the shock absorber in the engine room by using a crowbar, a rope and other tools to make it butt joint with the installation position of the free end of the main engine crankshaft.

[0003] In the traditional installation, the connection between the shock absorber and the hoisting tool mainly relies on a simple lifting ring or rope binding, and lacks a special positioning and locking structure. In the hoisting process, affected by the ship sway, sling swing and other factors, the shock absorber is prone to axial movement or radial deviation, which not only leads to the decline of butt joint accuracy, but also may cause the shock absorber to loosen and fall off from the hoisting tool due to violent shaking, which exists the hidden danger of equipment damage and personnel safety. The core of this problem lies in that the existing clamp cannot form stable two-way positioning for the shock absorber, and it is difficult to adapt to the dynamic stress change in the hoisting process; the hoisting point position of the existing hoisting tool is mainly fixed, and the hoisting point position cannot be flexibly adjusted according to the gravity center of the shock absorber, and in the narrow engine room space, the final position of the shock absorber is inside the main engine, and due to the fact that the hoisting point cannot be set directly above, these situations will cause the shock absorber to be prone to imbalance and tilt in the hoisting process, and once it is imbalanced, it is not convenient to adopt imbalance adjustment measures, and the imbalanced shock absorber is difficult to be quickly adjusted to the target attitude by manual operation, which not only prolongs the installation time, but also may cause the attitude deviation to collide with the surrounding equipment, causing secondary damage, therefore, a main engine shock absorber on-board hoisting installation device is needed to solve the problems in the prior art. SUMMARY

[0004] The purpose of the present application is to provide a main engine shock absorber on-board hoisting installation device to solve the problems in the background art.

[0005] In order to achieve the above object, the present application is realized by the following technical scheme: a kind of mainframe shock absorber ship hoisting installation device, including lifting point hook, the lower end of the lifting point hook is provided with balance hoisting mechanism, the balance hoisting mechanism includes positioner and balance lifting appliance, the positioner is fixed at the lower end of lifting point hook, the balance lifting appliance is slidably connected in the inside of positioner, the bottom of the balance lifting appliance is fixed with side pull ring, the surface of the side pull ring is equipped with side pull chain, one end of the side pull chain is provided with pneumatic hoist, the lower end of the lifting point hook is provided with butt joint clamp mechanism, the butt joint clamp mechanism includes suspension vertical plate, side baffle and positioning shaft assembly, the suspension vertical plate is fixed at the bottom of balance lifting appliance, the side baffle is fixed on the side surface of suspension vertical plate, the positioning shaft assembly is penetrated in the inside of suspension vertical plate and side baffle.

[0006] Preferably, the positioner includes a positioner sleeve, the inside of the positioner sleeve is provided with a positioner sleeve opening, the positioner sleeve is fixed at the lower end of the lifting point hook, locking nuts are fixed on the middle of the two side surfaces of the positioner sleeve, and locking screws are threaded through the inside of the locking nuts.

[0007] Preferably, a protruding slider is fixed on the inner side wall of the positioner sleeve, and positioner slides are opened on the two side surfaces of the balance lifting appliance.

[0008] Preferably, a limiting slot hole is opened on the wall where the positioner slide of the balance lifting appliance is located, and an alignment hole is opened on the end surface of the protruding slider.

[0009] Preferably, the positioning shaft assembly includes a positioning cylinder, the positioning cylinder is fixedly penetrated in the inside of the side baffle and the suspension vertical plate, a horizontal slide is opened in the inside of the positioning cylinder, a containing groove is also opened in the inside of the positioning cylinder, and a contraction slot opening is opened between the horizontal slide and the containing groove in the inside of the positioning cylinder.

[0010] Preferably, a lifting slide is opened on the side wall where the positioning cylinder is located in the contraction slot opening, a lifting slider is slidably connected in the inside of the lifting slide, a lateral anti-drop block is fixed on one end of the lifting slider, and the contraction slot opening and the lateral anti-drop block are slidably matched.

[0011] Preferably, a distance adjusting screw seat is fixed on the middle of one end surface of the positioning cylinder, a distance adjusting screw operating rod is threaded through the inside of the distance adjusting screw seat, and an adjusting knob is fixed on one end of the distance adjusting screw operating rod extending out of the positioning cylinder.

[0012] Preferably, an extrusion circular table is fixed on one end of the distance adjusting screw operating rod extending into the positioning cylinder, and the extrusion circular table is slidably connected in the horizontal slide of the positioning cylinder.

[0013] Preferably, an extrusion opening for extruding the circular platform is arranged between adjacent lifting sliders, and a positioning space for the shock absorber is arranged between the lateral anti-drop block and the side baffle disc.

[0014] Preferably, the surface of the lifting point hook is sleeved with a lifting rope, and the surface of the pneumatic hoist is wound with a side pull chain.

[0015] The present application provides a kind of host shock absorber on-board hoisting installation device, compared with prior art has the following beneficial effects: (1) In the design of the docking clamp mechanism, the positioning shaft assembly provides reliable positioning and anti-drop protection for shock absorber hoisting through precise mechanical structure cooperation. The horizontal slide way, contraction slot and lifting slide way inside the positioning cylinder form a coordinated sliding structure. When the extrusion circular platform is rotated in by the distance adjusting screw thread operating rod, the width characteristics of the extrusion circular platform "from small to large" can uniformly push multiple lateral anti-drop blocks to extend along the contraction slot, forming a two-side limiting space for the shock absorber with the side baffle disc. This design effectively solves the problem of axial and radial looseness and falling of the shock absorber during hoisting, greatly improving the safety of high-altitude hoisting; at the same time, the adaptive design of the positioning cylinder and the shock absorber center shaft slot provides precise guidance for the installation process. When the positioning cylinder is docked with the free end of the host crankshaft, the shock absorber can be stably pushed to the installation position along the axis of the positioning cylinder, avoiding the installation difficulties caused by positioning deviation in traditional hoisting, and significantly improving the accuracy and efficiency of installation operation. (2) The balance hoisting mechanism realizes flexible adaptation and attitude control of hoisting conditions through the cooperation of the position adjusting assembly and the balance lifting device. In the position adjusting assembly, the position adjusting sleeve and the balance lifting device are connected by sliding through the protruding sliding block and the position adjusting slide way, and the locking structure of the locking nut and the locking screw can quickly adjust the lifting point position. This design enables the device to adapt to the size, shape and gravity center changes of different specifications of shock absorbers, and does not need to replace the lifting device when replacing the hoisting object, but can be adapted through simple mechanical adjustment, greatly saving the preparation time of the operation; in the limited space operation scene, the position adjusting function of the position adjusting assembly can flexibly adjust the hoisting attitude of the shock absorber such as inclination angle and horizontal height, ensuring that the shock absorber can smoothly avoid obstacles in the ship engine room and accurately reach the target installation position, effectively improving the success rate of operation in narrow areas; in addition, the combination structure of the side pull ring, the side pull chain and the pneumatic hoist further optimizes the balance control of hoisting. When the balance lifting device is unbalanced due to lifting point deviation, the pneumatic hoist can apply a balancing force in real time by retracting and releasing the side pull chain, ensuring the stability of the hoisting process; when the installation attitude needs to be adjusted, the balance lifting device can be controlled to realize inclined hoisting by releasing the side pull chain, facilitating the accurate descent of the shock absorber to the installation station, solving the problem of difficult attitude adjustment in traditional hoisting, and comprehensively improving the flexibility and safety of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the overall structure of the present application; Figure 2 is a perspective view of the balanced lifting tool structure of the present application; Figure 3 is a perspective view of the position adjusting sliding sleeve structure of the present application; Figure 4 is a perspective view of the limiting slot structure of the present application; Figure 5 is a perspective view of the positioning shaft assembly structure of the present application; Figure 6 is a perspective view of the positioning cylinder structure of the present application; Figure 7 is a perspective view of the sectional structure of the positioning cylinder of the present application; Figure 8 is a perspective view of the horizontal sliding track structure of the present application; Figure 9 is a perspective view of the Figure 8 is an enlarged view of A in the figure; Figure 10 is a perspective view of the lateral anti-disengagement block structure of the present application.

[0017] In the figure: 1, lifting point hook; 2, lifting rope; 3, balanced lifting mechanism; 4, position adjusting assembly; 5, balanced lifting tool; 6, position adjusting sliding sleeve; 7, locking sleeve; 8, locking screw; 9, protruding sliding block; 10, position adjusting sleeve opening; 11, alignment hole; 12, position adjusting sliding track; 13, limiting slot; 14, butt joint clamp mechanism; 15, suspension vertical plate; 16, lateral baffle disc; 17, positioning shaft assembly; 18, positioning cylinder; 19, distance adjusting screw seat; 20, lateral anti-disengagement block; 21, distance adjusting screw thread operating rod; 22, adjusting knob; 23, extruded circular table; 24, containing groove; 25, retraction groove opening; 26, lifting sliding track; 27, horizontal sliding track; 28, lifting sliding block; 29, side pull ring; 30, pneumatic hoist; 31, side pull locking chain. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Embodiment 1 Please refer to Figures 1-10The application provides a ship-mounted lifting installation device for a host shock absorber, which comprises a lifting point hook 1, and a docking clamp mechanism 14 is arranged at the lower end of the lifting point hook 1. The docking clamp mechanism 14 is used as a core component for lifting and positioning the shock absorber and is composed of a suspension vertical plate 15, a side baffle 16 and a positioning shaft assembly 17. The suspension vertical plate 15 is made of high-strength alloy steel plate and is fixed at the bottom of a balance lifting appliance 5 through bolts to ensure the stability of load bearing. The side baffle 16 is a circular steel plate with a diameter of 200 mm and is vertically welded to one side surface of the suspension vertical plate 15, and the edge is rounded to avoid scratching the surface of the shock absorber during lifting. The positioning shaft assembly 17 penetrates the inside of the suspension vertical plate 15 and the side baffle 16 to form a positioning support base for the shock absorber, and the shaft center is concentric with the center of the side baffle 16 to ensure that the positioning accuracy error is less than 0.5 mm.

[0020] Specifically, the main body of the positioning shaft assembly 17 is a positioning cylinder 18 which is made of a 45 seamless steel pipe, and the outer diameter is designed as 80-120 mm adjustable specifications according to the common shock absorber shaft groove size. The positioning cylinder 18 penetrates and is fixed in the inside of the side baffle 16 and the suspension vertical plate 15. A horizontal slide 27 with a width of 30 mm is arranged in the inside of the positioning cylinder 18 and is used for adapting the sliding of the transmission component. Meanwhile, a containing groove 24 with a depth of 50 mm is also arranged to provide sufficient installation space for the internal structure. Between the horizontal slide 27 and the containing groove 24, a contraction slot 25 with a width of 15 mm is arranged as a movable channel for the lateral anti-falling component, and a wear-resistant copper sleeve is embedded on the edge of the slot to reduce the wear of the component. It is worth noting that three symmetrical lifting slides 26 are arranged on the side wall of the contraction slot 25 of the positioning cylinder 18, and the cross section of the lifting slide is in a T-shaped structure to prevent the sliding block from falling off. A lifting sliding block 28 is slidably connected in the lifting slide 26, and the lifting sliding block 28 is made of wear-resistant cast iron and is sprayed with a lubricating coating on the surface to reduce the friction coefficient. One end of the lifting sliding block 28 is integrally formed with a lateral anti-falling block 20, the surface of the anti-falling block is pasted with a 3mm thick rubber non-slip pad, and the contraction slot 25 and the lateral anti-falling block 20 form a sliding adaptation structure to ensure that the lateral anti-falling block 20 can flexibly stretch and contract along the contraction slot 25, and the stretching and contracting range can reach 0-25 mm. It is worth noting that a pitch adjusting screw seat 19 is welded and fixed in the middle of one end surface of the positioning cylinder 18, the screw seat is made of 40Cr material and is subjected to quenching and tempering treatment, an M20x2 fine thread is processed in the inside of the screw seat, and the thread precision reaches 6H level. A pitch adjusting thread operating rod 21 is arranged in the inside thread of the pitch adjusting screw seat 19, the operating rod is made of 35CrMo alloy structural steel, the surface is subjected to nitriding treatment to improve wear resistance, the rod length is designed as 300 mm, a diameter 50 mm adjusting knob 22 is welded and fixed on the end of the operating rod which protrudes from the positioning cylinder 18, the surface of the knob is knurled to increase the friction, and the axial movement of the pitch adjusting thread operating rod 21 can be realized by rotating the adjusting knob 22, and the movement speed is 2 mm per rotation. It is worth noting that the end of the distance adjusting screw rod 21 extending into the positioning cylinder 18 is fixed with an extruded circular table 23 by a pin shaft, the circular table is made of bearing steel material and is quenched, with a hardness of HRC 55-60. The extruded circular table 23 is slidingly connected in the horizontal slide 27 of the positioning cylinder 18, and the diameter of the extruded circular table 23 is arranged from small to large along the axial direction, with a taper design of 1:5, forming a precise tapered extrusion structure, to ensure uniform force on the three lateral anti-loose blocks 20. It is worth noting that the extrusion openings are provided between the adjacent lifting blocks 28 for the extruded circular table 23 to pass through, and the width of the extrusion openings gradually expands from 10mm to 25mm as the circular table advances. The lateral anti-loose blocks 20 and the side baffle plate 16 form a positioning space for the shock absorber, and the distance of the positioning space can be adjusted within the range of 100-150mm through the expansion of the anti-loose blocks, to realize reliable clamping and positioning of shock absorbers with different thicknesses through the cooperation of the two. The scheme has the following working process: before hoisting the shock absorber, the appropriate size of the positioning cylinder 18 is selected according to the model of the shock absorber, and the positioning shaft assembly 17 in the butt joint clamp mechanism 14 is accurately inserted into the shaft groove in the center of the shock absorber. At this time, the lateral anti-loose blocks 20 are in a retracted state, to ensure smooth insertion. Then the operator holds the adjusting knob 22 and rotates the distance adjusting screw rod 21 clockwise along the distance adjusting screw seat 19 at one end of the positioning cylinder 18. The distance adjusting screw rod 21 is smoothly screwed along the fine thread of the distance adjusting screw seat 19, and the extruded circular table 23 is slowly entered into the gap between the lifting blocks 28 of the adjacent lateral anti-loose blocks 20. Since the width of the extruded circular table 23 is arranged from small to large, it will uniformly extrude the three lifting blocks 28 to slide outward along the lifting slide 26 during the advancing process, thereby adjusting the retracted slot 25 of the lateral anti-loose blocks 20 extending out of the positioning cylinder 18. When the rubber pad on the surface of the anti-loose block is in close contact with the side of the shock absorber, the locking torque of the adjusting knob 22 is confirmed by the torque wrench to reach 30N·m. At this time, the lateral anti-loose blocks 20 and the side baffle plate 16 can rigidly limit the shock absorber on the positioning cylinder 18 on both sides, which can effectively prevent the shock absorber from loosening or falling off in the axial or radial direction during hoisting. Tests show that the structure can still maintain stable clamping under a 10° inclination angle condition. In addition, after the shock absorber is accurately positioned on the positioning cylinder 18, when the positioning cylinder 18 is butted with the free end of the main engine crankshaft for installing the shock absorber, the operator can push the shock absorber along the positioning cylinder 18 in the axial direction, and the shock absorber is accurately pushed to the installation position by the guiding action of the positioning cylinder. Compared with the traditional hoisting method, the positioning time can be reduced by about 60%.

[0021] Example 2 Please refer to Figures 1-10The application provides a main engine shock absorber on-ship lifting installation device, which comprises a lifting point hook 1, the lifting point hook 1 is forged by using 20MnSi alloy structural steel, the bearing grade reaches 50kN, and a balance lifting mechanism 3 is arranged at the lower end of the lifting point hook 1. The balance lifting mechanism 3 is composed of a position adjusting assembly 4 and a balance lifting appliance 5, wherein the position adjusting assembly 4 is fixed at the lower end of the lifting point hook 1 through high-strength bolts, the balance lifting appliance 5 is designed by using a box-shaped steel structure, the length is 2000mm, and the balance lifting appliance 5 is slidably connected in the position adjusting assembly 4, so as to form an adjustable lifting support structure. Three equidistantly distributed side pull rings 29 are welded at the bottom of the balance lifting appliance 5, the diameter of the pull ring is 50mm, the pull ring is integrally formed by using a forging process, a side pull chain 31 is sleeved on the surface of the side pull ring 29, the chain is a lifting chain with a diameter of 8mm, the breaking tension reaches 100kN, one end of the side pull chain 31 is connected with a pneumatic hoist 30 with a rated lifting capacity of 3t, and the posture of the balance lifting appliance 5 is adjusted by the folding of the pneumatic hoist 30. Specifically, the position adjusting assembly 4 comprises a position adjusting sleeve 6, a position adjusting sleeve opening 10 is arranged in the position adjusting sleeve 6, the sleeve is welded by using a 16mm thick steel plate, the internal size is matched with the balance lifting appliance 5, the position adjusting sleeve 6 is fixed at the lower end of the lifting point hook 1 through bolts, locking nuts 7 are welded and fixed at the middle of the two side surfaces of the position adjusting sleeve 6, the nuts are processed by using 45# steel, and the internal thread is M16x1.5. A locking screw 8 is arranged in the internal thread of the locking nut 7, the head of the screw is designed as a hexagonal structure, the screw is convenient for being operated by using a wrench, the relative fixing of the position adjusting sleeve 6 and the balance lifting appliance 5 can be realized by rotating the locking screw 8, and the maximum locking force can reach 20kN. Specifically, a convex sliding block 9 is welded and fixed on the inner side wall of the position adjusting sleeve 6, the sliding block is made of wear-resistant cast iron, the cross-sectional size is 40x20mm, length-adjusting sliding grooves 12 with a length of 1500mm are formed in the two side surfaces of the balance lifting appliance 5, the depth of the sliding groove is 25mm, the convex sliding block 9 and the length-adjusting sliding groove 12 form a sliding matching structure, the matching clearance is controlled to be between 0.1-0.3mm, the balance lifting appliance 5 can stably slide along the position adjusting sleeve 6, and the sliding resistance is not more than 50N. Specifically, limit slot holes 13 with a spacing of 100mm are formed in the wall body where the length-adjusting sliding groove 12 of the balance lifting appliance 5 is located, the diameter of the slot hole is 18mm, and the depth is 10mm. An alignment hole 11 with a diameter of 16mm is formed in the end face of the convex sliding block 9. When the position adjusting sleeve 6 is adjusted to the target position, the locking screw 8 can penetrate through the alignment hole 11 and extend into the limit slot hole 13, so as to realize position locking, and the positioning accuracy can reach ±5mm.

[0022] Specifically, the surface of the lifting point hook 1 is sleeved with a lifting rope 2 with a diameter of 20 mm, which is an eight-strand braided steel wire rope with a nominal tensile strength of 1770 MPa, serving as the main lifting load-bearing component; the surface of the pneumatic hoist 30 is wound with a length of 20 m of side pull chain 31, which is driven by the pneumatic motor of the pneumatic hoist 30 to realize the winding and release of the side pull chain 31, and the winding and releasing speed can reach 8 m / min, and it has a stepless speed regulation function.

[0023] The present scheme has the following working process: during lifting, the crane uses the lifting rope 2 to lift the lifting point hook 1, and before lifting, all connection parts need to be checked to ensure that the bolt pre-tightening force meets the requirements. Before lifting, the operator loosens the locking screw 8, pushes the positioning sleeve 6 in the positioning assembly 4 to slide along the positioning slide 12 of the balance lifting appliance 5 and adjusts the position, at this time the protruding sliding block 9 slides smoothly in the positioning slide 12, and the adjustment distance is determined by observing the scale mark on the side of the balance lifting appliance 5. Then use a wrench to rotate the locking screw 8 into the locking nut 7, and after the end of the locking screw 8 penetrates through the alignment hole 11 and extends into the limiting slot hole 13 of the balance lifting appliance 5, when the screw head is attached to the locking nut 7, continue to apply torque to 25 N·m to complete the locking, which can reliably lock the position of the positioning sleeve 6 on the balance lifting appliance 5, thereby realizing the adjustment of the lifting point position of the balance lifting appliance 5. The adjustment of the lifting point position can make the balance lifting appliance 5 adapt to the size, shape and center of gravity changes of different objects, for example, when lifting different specifications of goods or replacing the lifting object, the lifting appliance does not need to be replaced, and the lifting point can be adjusted within 30 seconds only by the positioning sleeve 6 and the locking structure, greatly saving the operation time; when lifting in a limited space such as a ship engine room, the lifting point can be adjusted to accurately adjust the lifting posture of the object (such as the inclination angle and horizontal height), and the adjustment range can reach 0-30°, ensuring that the object can smoothly pass through the narrow channel and equipment gap and accurately reach the target position, which can improve the operation efficiency through actual application verification. During lifting, the pneumatic hoist 30 is installed on the load-bearing structure in the engine room through the fixed support, and the positioning sleeve 6 slides along the balance lifting appliance 5 to adjust the deviation of the lifting point from the center, so that the balance lifting appliance 5 forms a preset inclined posture during lifting. At this time, the side pull chain 31 is used to pull the end of the balance lifting appliance 5 away from the shock absorber, and the other end of the side pull chain 31 is fixed to the winding end of the pneumatic hoist 30. The operator adjusts the chain tension in real time by controlling the operation valve of the pneumatic hoist 30 to apply a balancing force downward, ensuring that the lifting process is balanced and stable, and the swing amplitude is controlled within ±50 mm. When the shock absorber needs to be sent to the installation position, the side pull chain 31 is slowly released by the pneumatic hoist 30, and the inclination of the balance lifting appliance 5 is accurately controlled to 0-15°, which facilitates the smooth descent of the shock absorber to the installation plane along the horizontal direction. The whole process does not need manual dragging, which not only ensures the operation safety, but also improves the installation accuracy.

[0024] The foregoing merely illustrates the principles of the application and application of its leading features. This application is not limited in scope by the foregoing embodiment, but extends its scope to other embodiments, which will become apparent to those ordinarily skilled in the art in view of the foregoing description. The present embodiments are to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.

Claims

1. A shipboard lifting and installation device for a main engine shock absorber, comprising a lifting point hook (1), characterized in that: The lower end of the lifting point hook (1) is provided with a balancing lifting mechanism (3). The balancing lifting mechanism (3) includes an adjustment component (4) and a balancing device (5). The adjustment component (4) is fixed to the lower end of the lifting point hook (1). The balancing device (5) is slidably connected inside the adjustment component (4). A side pull ring (29) is fixed to the bottom of the balancing device (5). A side pull chain (31) is sleeved on the surface of the side pull ring (29). One end of the side pull chain (31) is... A pneumatic hoist (30) is provided, and a docking clamp mechanism (14) is provided at the lower end of the lifting point hook (1). The docking clamp mechanism (14) includes a suspension plate (15), a side baffle (16) and a positioning shaft assembly (17). The suspension plate (15) is fixed to the bottom of the balance hoist (5), the side baffle (16) is fixed to one side surface of the suspension plate (15), and the positioning shaft assembly (17) passes through the interior of the suspension plate (15) and the side baffle (16).

2. The shipboard lifting and installation device for a main engine shock absorber according to claim 1, characterized in that: The adjustment component (4) includes an adjustment sleeve (6), the inside of which is provided with an adjustment sleeve opening (10). The adjustment sleeve (6) is fixed to the lower end of the lifting point hook (1). Locking screw sleeves (7) are fixed in the middle of both sides of the adjustment sleeve (6). Locking screws (8) are threaded through the internal threads of the locking screw sleeves (7).

3. The shipboard lifting and installation device for a main engine shock absorber according to claim 2, characterized in that: The inner wall of the adjusting sleeve (6) is fixed with a protruding slider (9), and the two sides of the balancing device (5) are provided with adjusting slides (12). The protruding slider (9) and the adjusting slides (12) slide and match.

4. The shipboard lifting and installation device for a main engine shock absorber according to claim 3, characterized in that: The adjusting slide (12) of the balancing device (5) is provided with a limiting slot (13) on the wall, and the end face of the protruding slider (9) is provided with an alignment hole (11).

5. The shipboard lifting and installation device for a main engine shock absorber according to claim 1, characterized in that: The positioning shaft assembly (17) includes a positioning cylinder (18), which is fixed inside the side baffle (16) and the suspension plate (15). A horizontal slide (27) is provided inside the positioning cylinder (18), and a receiving groove (24) is also provided inside the positioning cylinder (18). A shrinkage slot (25) is provided inside the positioning cylinder (18) between the horizontal slide (27) and the receiving groove (24).

6. The shipboard lifting and installation device for a main engine shock absorber according to claim 5, characterized in that: The positioning cylinder (18) has a lifting slide (26) on the side wall where the shrinkage groove (25) is located. The lifting slide (26) is slidably connected to a lifting slider (28). One end of the lifting slider (28) is fixed with a lateral anti-detachment block (20). The shrinkage groove (25) and the lateral anti-detachment block (20) are slidably adapted.

7. A shipboard lifting and installation device for a main engine shock absorber according to claim 6, characterized in that: An adjusting screw seat (19) is fixed in the middle of one end face of the positioning cylinder (18). An adjusting screw operating rod (21) is threaded through the internal thread of the adjusting screw seat (19). An adjusting knob (22) is fixed at one end of the adjusting screw operating rod (21) that extends out of the positioning cylinder (18).

8. The shipboard lifting and installation device for a main engine shock absorber according to claim 7, characterized in that: The end of the adjusting threaded operating rod (21) that extends into the positioning cylinder (18) is fixed with a pressing frustum (23), which is slidably connected in the horizontal slide (27) of the positioning cylinder (18).

9. A shipboard lifting and installation device for a main engine shock absorber according to claim 8, characterized in that: An extrusion port for the extrusion truncated cone (23) to pass through is provided between adjacent lifting sliders (28), and a positioning space for a shock absorber is provided between the lateral anti-detachment block (20) and the side baffle (16).

10. A shipboard lifting and installation device for a main engine shock absorber according to claim 1, characterized in that: The surface of the lifting point hook (1) is fitted with a lifting rope (2), and the surface of the pneumatic hoist (30) is wound with a side pull chain (31).

Images