Marine v-type engine air cooler mounting tool and mounting method

Abstract

The application discloses a marine V-type engine air cooler installation tool and installation method, wherein one end of an air cooler core support is fixed on the lower side of the end face of an air cooler shell on the upper end of a rack, an adjustable rolling support device supports the air cooler core on the upper end, an upper pulley assembly and a lower pulley assembly are fixed on the upper and lower sides of two cooling water distribution pipes, one end of a traction steel wire rope is connected with one end of the air cooler core, the other end of the traction steel wire rope is connected with a hook on one end of a hand-operated hoist after being wound around the upper and lower pulley assemblies in sequence, and the hook on the other end of the hand-operated hoist is hooked in the other end of the air cooler core support. The method comprises the following steps: 1) sequentially arranging the components of the tool, 2) hoisting the air cooler core to the air cooler core support, and 3) pulling the air cooler core into the air cooler shell by pulling the hand-operated hoist. The application significantly improves the installation quality, effectively solves the problems of low installation efficiency, high labor cost and hidden safety hazards.

Description

TECHNICAL FIELD

[0001] The application relates to a mounting tool for a marine engine component, in particular to a mounting tool and a mounting method for a marine engine air cooler, and belongs to the technical field of marine engine assembly. BACKGROUND

[0002] The air cooler is one of important components of the marine engine, is located at a free end of the engine, and is connected with a supercharging end of a supercharger and a scavenging tank. The main function of the air cooler is to cool and dehumidify the high-temperature fresh air after supercharging, and then send the air into the scavenging tank, so as to reduce the intake temperature, reduce pollutant emission, and improve fuel economy.

[0003] At present, the air cooler of the marine V-type engine with more than six cylinders has the problem of difficult installation. Since the cylinders on both sides of the V-type engine are inclined at a certain angle, if the air cooler core in a horizontal state is directly hoisted into the air cooler shell on one side of the upper part of the engine, the one end of the air cooler core will first contact the air cooler shell, so that the air cooler core and the air cooler shell are rubbed with each other and even deformed, which seriously affects the assembly quality of the air cooler. The air cooler core is heavy, and the assembly position is located at a high point of the frame. If manual cooperation with a crane is used for installation, multiple people need to carry and the same rubbing is also easy to occur, the assembly efficiency is low, and the installation risk is high, and safety accidents are easy to occur. SUMMARY

[0004] The application aims to provide a marine V-type engine air cooler mounting tool and a mounting method which are convenient, fast and efficient in operation and can prevent the air cooler core from colliding with or rubbing against the air cooler shell.

[0005] The application is implemented by the following technical scheme:

[0006] The application discloses a marine V-type engine air cooler installation tool, which comprises an air cooler core support, an adjustable rolling support device, an upper pulley assembly, a lower pulley assembly, a traction steel wire rope and a hand-operated hoist, one end of the air cooler core support is fixed on the lower side of the end face of an inclined air cooler shell at the upper end of a rack, and the air cooler core support comprises an outer end corner ruler plate, an inner end face plate, a horizontal rod, a pair of longitudinal right angle plates and a pair of rib plates, the length of the bottom edge of the outer end corner ruler plate is smaller than the length of the vertical edge of the outer end corner ruler plate, and a lifting hook hole is arranged in the middle of the bottom edge; the outer end corner ruler plate, the inner end face plate and the pair of longitudinal right angle plates are welded into a rectangular frame, triangular rib plates are welded between the inner side of the vertical edge of the outer end corner ruler plate and the two ends of the bottom edge of the outer end corner ruler plate; the horizontal rod is welded to the middle of the inner side of the longitudinal right angle plate at two ends; the rib plates are welded to one end of the inner end face plate and the adjacent longitudinal right angle plate; the upper end of the adjustable rolling support device is supported on the lower side of the air cooler core; the upper pulley assembly and the lower pulley assembly are clamped and fixed on the upper and lower sides of two cooling water distribution pipes arranged side by side; one end of the traction steel wire rope is connected with a lifting ring screw fixed at the center of one end of the air cooler core; the other end of the traction steel wire rope is sequentially wound around the upper pulley assembly and the lower pulley assembly, then passes through the center hole of the inner end face plate, and is finally connected with the lifting hook at one end of the hand-operated hoist; the lifting hook at the other end of the hand-operated hoist is hooked on the lifting hook hole in the other end of the air cooler core support.

[0007] The object of the application can also be further achieved by the following technical measures.

[0008] Further, the upper side of the vertical edge of the outer end corner ruler plate is provided with a higher blocking edge than the top surface of the longitudinal right angle plate, the height A of the blocking edge is 16-22 mm, and the ratio of the length B1 of the air cooler core to the length B2 of the longitudinal right angle plate is B1 / B2=0.86-0.90.

[0009] Further, the adjustable rolling support device comprises a rolling rod, a pair of support sliding blocks, a sliding block sleeve, a fixed block and an adjusting screw rod, the sliding block sleeve and the fixed block are vertically welded and fixed on the middle of the vertical outer side of the longitudinal right angle plate, the lower end of the support sliding block is embedded in the sliding block sleeve, the adjusting screw rod is screwed with the center screw hole of the fixed block, the end of the adjusting screw rod is inserted into the sink hole at the lower end of the support sliding block, the lower side of the two ends of the rolling rod is supported in the semicircular groove at the top end of the support sliding block, and the upper side of the rolling rod is supported on the lower side of the air cooler core.

[0010] Further, the upper pulley assembly and the lower pulley assembly are symmetrically arranged and have the same structure, including a pair of supports, pulleys and pulley mandrels, the supports are symmetrically arranged up and down, the support bottom plates clasp two parallel cooling water distribution pipes at both ends respectively, the pulleys are embedded in the corresponding support end heads respectively, the pulley mandrels pass through the corresponding support end heads and the centers of the pulleys respectively, and the pulley mandrels are fixedly connected with the support vertical plates at both ends respectively; the tensioning screws of the double-end bolt structure pass through the through holes on the both sides of the center of the corresponding support bottom plate vertically at both ends respectively, and the supports are clamped on the two parallel cooling water distribution pipes by tightening the nuts at the ends of the tensioning screws respectively.

[0011] Further, V-shaped grooves are formed at both ends of the support bottom plate respectively, the V-shaped grooves clasp the corresponding cooling water distribution pipes on the both sides respectively, and the center through hole of the support bottom plate is provided for the traction steel wire rope.

[0012] A method for installing an air cooler using a marine V-type engine air cooler installation tool, comprising the following steps:

[0013] 1) First, the inner end panel of one end of the air cooler core support is fixed on the lower side of the inclined air cooler shell end face of the upper part of the rack by a plurality of fixing screws.

[0014] 2) Then, the upper pulley assembly and the lower pulley assembly are installed, the pulleys are embedded in the corresponding support end heads respectively, the pulley mandrels pass through the corresponding support end heads and the pulleys respectively, and the pulley mandrels are fixedly connected with the corresponding support vertical plates at both ends by the set screws; then, the V-shaped grooves at both ends of the support bottom plate of the upper pulley assembly and the V-shaped grooves at both ends of the support bottom plate of the lower pulley assembly are oppositely clamped on the two parallel cooling water distribution pipes, the tensioning screws pass through the through holes on the both sides of the center of the corresponding support bottom plate vertically respectively, and the upper pulley assembly and the lower pulley assembly are clamped and fixed on the two cooling water distribution pipes by tightening the nuts at the ends of the tensioning screws respectively;

[0015] 3) The lower end of the supporting sliding block is embedded in the sliding block sleeve, then the adjusting screw is screwed with the center screw hole of the fixed block upward, the end of the adjusting screw is inserted into the sink hole at the lower end of the supporting sliding block, and the both ends of the rolling rod are supported in the semicircular grooves at the top end of the supporting sliding block, thereby completing the installation of the adjustable rolling support device.

[0016] 4) The lifting ring screw is screwed on the center of the other end of the air cooler core, then the air cooler core is hoisted to the air cooler core support and is inclined to fall down, so that the flange on the upper side of one end of the air cooler core support blocks one end of the air cooler core, and the other end of the air cooler core is supported on the rolling rod; the wrench is used to rotate the adjusting screw, thereby adjusting the inclination angle of the air cooler core, so that the inclination angle of the air cooler core matches the inclination angle of the air cooler shell.

[0017] 5) the one end of the traction steel wire rope is connected with the one end of the lifting ring screw, the other end of the traction steel wire rope is firstly wound around the pulley of the upper pulley assembly, then passes through the center through hole of the support bottom plate, then is wound around the pulley of the artificial lower pulley assembly, then passes through the center hole of the inner end panel of the air cooler core support and is connected with the hook of the one end of the hand-operated hoist, the hook of the other end of the hand-operated hoist is hooked on the hook hole of the other end of the air cooler core support;

[0018] 6) the handle of the hand-operated hoist is pulled, the distance between the hooks of the two ends of the hand-operated hoist is gradually shortened, so that the air cooler core is slowly pulled into the air cooler shell through the traction steel wire rope; when the stopper edge of one end of the air cooler core approaches the rolling rod, the adjusting screw is reversely rotated by using a wrench respectively, so that the rolling rod is separated from the lower side of the air cooler core, and the rolling rod can be pulled out; the adjusting screw is continuously reversely rotated, until the top surface of the support sliding block is lower than the corresponding longitudinal right angle plate respectively; the handle of the hand-operated hoist can be continuously pulled to pull the air cooler core, until the stopper edge of one end of the air cooler core abuts against the outer end surface of the air cooler shell;

[0019] 7) then the stopper edge of one end of the air cooler core is fixed on the end surface of one end of the air cooler shell through a plurality of screws, the other end of the air cooler core is fixedly connected with the stopper edge in the other end of the air cooler shell through the upper and lower two screws, so that the air cooler core is installed at the specified position in the air cooler shell; then the lifting ring screw and the traction steel wire rope are disassembled, the rear cover plate is fixed on the other end port of the air cooler shell through a plurality of screws, and the installation of one air cooler core is completed;

[0020] 8) finally, the hand-operated hoist, the upper pulley assembly, the lower pulley assembly, the steel wire rope, the air cooler core support and the adjustable rolling support device are disassembled in sequence, and the installation of one air cooler is completed; the foregoing steps are repeated, and the other air cooler core is installed in the air cooler shell at the other end of the upper part of the rack.

[0021] The installation tool of the air cooler of the application adopts the air cooler core supported on the air cooler core support, the hand-operated hoist, the upper pulley assembly, the lower pulley assembly and the adjustable support device connected as a whole structure through the traction steel wire rope, the installation method of the application adjusts the inclination angle of the air cooler core through the adjustable support device, so that the inclination angle of the air cooler core is consistent with the inclination angle of the air cooler shell, so that the handle of the hand-operated hoist can be safely, accurately and efficiently installed in the air cooler shell, effectively avoiding the scratching of the air cooler core and the air cooler shell, and significantly improving the installation quality. The application effectively solves the problems of low installation efficiency, high labor cost and safety hazards, and is suitable for the installation of air coolers of various types of marine V-type engines and has good universality.

[0022] The advantages and characteristics of the application will be illustrated and explained by the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic view of the installation tool of the present application having been installed and the air cooler core having been placed on the air cooler core support;

[0024] Figure 2 is a schematic view of the air cooler core having been installed in the air cooler housing;

[0025] Figure 3 is a structural view of the installation tool of the present application;

[0026] Figure 4 is an enlarged plan view of the air cooler core support;

[0027] Figure 5 is an enlarged view of the adjustable rolling support device;

[0028] Figure 6 is Figure 3 a partial enlarged view of A of DETAILED DESCRIPTION

[0029] The present application will be further described below in connection with the accompanying drawings and embodiments of the present application.

[0030] In the description of the present application, the terms indicating the orientation or positional relationship such as "center", "upper", "lower", "left", "right", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the device referred to must have a particular orientation.

[0031] As shown in Figures 1-6 , the installation tool of the present application includes an air cooler core support 1, an adjustable rolling support device 2, an upper pulley assembly 3, a lower pulley assembly 4, a traction steel wire rope 5 and a hand-operated hoist 6, the left end of the air cooler core support 1 is fixed on the lower side of the end face of the left end inclined air cooler housing 82 of the upper portion of the rack 7 by a plurality of screws 84.

[0032] The air cooler core support 1 comprises an outer end angle scale plate 11, an inner end plate 12, a horizontal rod 13, a pair of longitudinal right angle plates 14 and a pair of rib plates 15. The outer end angle scale plate 11 is made of unequal angle steel. The length of the bottom edge 111 of the outer end angle scale plate 11 is less than the length of the vertical edge 112 of the outer end angle scale plate 11. The middle part of the bottom edge 111 is provided with a hook hole 113. The outer end angle scale plate 11, the inner end plate and the pair of longitudinal right angle plates 14 are welded to form a rectangular frame. The vertical edge 112 of the outer end angle scale plate 11 and the two ends of the bottom edge 111 of the outer end angle scale plate 11 are respectively welded with triangular rib plates 114, so as to improve the strength and rigidity of the outer end angle scale plate 11. The hook 61 is often hooked through the hook hole 113, and the outer end angle scale plate 11 will not be deformed and failed. The two ends of the horizontal rod 13 are respectively welded with the middle part of the inner side of the longitudinal right angle plate 12. The right angle faces of the rib plates 15 are respectively welded with the inner end plate and the right end of the adjacent longitudinal right angle plate 14, so as to improve the strength and rigidity of the air cooler core support 1. The vertical edge 112 of the outer end angle scale plate 11 is provided with a stop edge 115 which is higher than the top face of the longitudinal right angle plate 14. The height A of the stop edge 115 is 18 mm. The stop edge 115 plays a limiting role on the left end of the air cooler core 81 placed on the air cooler core support 1, so as to prevent the air cooler core 81 from slipping off. The ratio of the length B1 of the air cooler core to the length B2 of the longitudinal right angle plate in the embodiment is B1 / B2=0.88. The air cooler core 81 has a sliding distance on the air cooler core support 1, so as to facilitate the right movement of the air cooler core 81 into the air cooler shell 82.

[0033] The adjustable rolling support device 2 is arranged on the middle part of the outer side face of the longitudinal right angle plate 14 and comprises a rolling rod 21 and a pair of support sliders 22, slider sleeve pipes 23, fixed blocks 24 and adjusting screw rods 25. The slider sleeve pipes 23 are made of square steel pipes. The slider sleeve pipes 23 and the fixed blocks 24 are vertically welded and fixed on the vertical outer side face of the longitudinal right angle plate 14 one above the other. The lower ends of the support sliders 22 are respectively embedded in the slider sleeve pipes 23. The adjusting screw rods 25 are respectively screwed with the central screw holes 241 of the fixed blocks. The one end of the adjusting screw rod 25 respectively extends into the sink hole 221 of the lower end of the support slider 22. The lower sides of the two ends of the rolling rod 21 are respectively supported in the semicircular grooves 222 at the top end of the support slider 22. The upper side of the rolling rod 21 is supported on the lower side face of the air cooler core 81. The adjusting screw rod 25 is turned by a wrench. The inclination angle of the rolling rod 21 supporting the air cooler core 81 can be adjusted by the lifting of the support slider 22, so as to match the inclination angle of the air cooler shell 82, facilitate the air cooler core 81 to enter the air cooler shell 82 and adapt to the installation of air coolers of various models. The linear contact between the rolling rod 21 and the air cooler core 81 is rolling friction, which greatly reduces the moving resistance of the air cooler core 81 into the air cooler shell 82. The slider sleeve pipes 23 are made of square steel pipes. The space is left between the support sliders 22 and the inner cavities of the square steel pipes, so as to facilitate the up and down movement of the support sliders 22.

[0034] The upper pulley assembly 3 and the lower pulley assembly 4 are clamped and fixed on the upper and lower sides of two parallel cooling water distribution pipes 9. The upper pulley assembly 3 and the lower pulley assembly 4 have the same structure and are symmetrically arranged, including a pair of supports 31, pulleys 32 and pulley spindles 33. The supports 31 are symmetrically arranged, and V-shaped grooves 312 are opened at both ends of the support base plate 311. The two sides of the V-shaped grooves 312 clamp the corresponding cooling water distribution pipes 9. The center of the support base plate 311 also has a central through hole 313 for the traction wire rope 5 to pass through. The pulleys 32 are respectively embedded in the corresponding ends of the supports 31, and the pulley spindles 33 pass horizontally through the corresponding ends of the supports 31 and the center of the pulleys 32. The two ends of the pulley spindles 33 are respectively fixedly connected to the support upright plate 314 by set screws 315. The two ends of the double-headed bolt tensioning screw 34 pass vertically through the through holes 316 on both sides of the center of the corresponding support base plate 311. By tightening the nuts 341 at both ends of the tensioning screw 34, the support 31 is clamped on the two parallel cooling water distribution pipes 9.

[0035] The left end of the traction wire rope 5 is connected to the eye bolt 83 fixed at the center of one end of the air cooler core 81. The right end of the traction wire rope 5 first passes around the pulley 32 of the upper pulley assembly 3, then passes through the central through hole 313 of the support base plate 311, then passes around the pulley 32 of the lower pulley assembly 3, then passes through the central hole 121 of the inner end panel, and finally connects to the hook 61 at the right end of the lever hoist 6. The hook 61 at the left end of the lever hoist 6 is hooked on the hook hole 113 inside the left end of the air cooler core bracket 1.

[0036] The method for installing an air cooler using a marine V-type engine air cooler mounting fixture includes the following steps:

[0037] 1) First, fix the inner end panel 12 of the right end of the air cooler core bracket 1 to the lower side of the inclined end face of the air cooler housing 82 on the upper part of the frame 7 with multiple fixing screws 84.

[0038] 2) Next, install the upper pulley assembly 3 and the lower pulley assembly 4. Embed the pulleys 32 into the corresponding supports 31 ends. The pulley spindles 33 pass through the corresponding supports 31 ends and pulleys 32, respectively. Secure the two ends of the pulley spindles 33 to the corresponding support plates 314 using set screws 315. Then, clamp the two parallel cooling water distribution pipes 9 with the V-grooves 312 at both ends of the support base plate 311 of the upper pulley assembly 3 and the V-grooves 312 at both ends of the support base plate 311 of the lower pulley assembly 4. Then, pass the tension screws 34 vertically through the through holes 316 on both sides of the center of the corresponding support base plate 311. Tighten the nuts 341 at the ends of the tension screws 34 to clamp and fix the upper pulley assembly 3 and the lower pulley assembly 4 to the two cooling water distribution pipes 9.

[0039] 3) Insert the lower end of the support slider 22 into the slider sleeve 23 respectively, then screw the adjusting screw 25 upwards into the center screw hole 241 of the fixed block respectively, and insert the upper end of the adjusting screw 25 into the countersunk hole 221 at the lower end of the support slider. Then support the lower sides of both ends of the rolling rod 21 in the semi-circular groove 222 at the top of the support slider 22 respectively, thus completing the installation of the adjustable rolling support device 2.

[0040] 4) Tighten the eye bolt 83 onto the center of the right end of the air cooler core 8, then hoist the air cooler core 8 above the air cooler core support 1 and tilt it down so that the upper left side of the air cooler core support 115 blocks the left end of the air cooler core 8, and the right end of the air cooler core 8 is supported on the rolling rod 21; use a wrench to turn the adjusting screw 25 to adjust the tilt angle of the air cooler core 8 so that the tilt angle of the air cooler core 8 matches the tilt angle of the air cooler housing 82, making it easier for the air cooler core 8 to be pulled into the air cooler housing 82.

[0041] 5) Connect the left end of the traction wire rope 5 to one end of the eye bolt 83. The right end of the traction wire rope 5 first passes around the pulley 32 of the upper pulley assembly 3, then passes through the central through hole 313 of the support base plate 311, then passes around the pulley 32 of the manual lower pulley assembly 3, then passes through the central hole 121 of the inner end panel of the air cooler core support 1, and finally connects to the hook 61 at the right end of the lever hoist 6. The hook 61 at the left end of the lever hoist 6 is hooked on the hook hole 113 inside the left end of the air cooler core support 1.

[0042] 6) By pulling the handle 62 of the hand-operated hoist, the distance between the hooks 61 at both ends of the hand-operated hoist 6 gradually shortens, thereby slowly pulling the air cooler core 8 into the air cooler housing 82 through the traction wire rope 5. When the stop edge 81 at the left end of the air cooler core 8 approaches the rolling rod 21, use a wrench to rotate the adjusting screw 25 in the opposite direction, so that the rolling rod 25 disengages from the lower side of the air cooler core 8, and the rolling rod 21 can be pulled out; continue to rotate the adjusting screw 25 in the opposite direction until the top surface of the support slider 22 is lower than the pair of longitudinal right-angle plates 14; then continue to pull the handle 62 of the hand-operated hoist to pull the air cooler core 8, so that the stop edge 81 at the left end of the air cooler core 8 abuts against the outer end face of the air cooler housing 82.

[0043] 7) Next, fix the left end of the air cooler core 8 to the end face of the air cooler housing 82 using a ring of screws 84. Then, fix the right end of the air cooler core 8 to the stop edge 821 inside the right end of the air cooler housing 82 using two screws 84, so that the air cooler core 8 is installed in the designated position inside the air cooler housing 82. Then, first remove the eye bolts 83 and the traction steel wire rope 5, and then fix the rear cover plate 85 to the left end port of the air cooler housing 82 using a ring of screws 84, thus completing the installation of one air cooler core.

[0044] 8) Finally, disassemble the lever hoist 6, upper pulley assembly 3, lower pulley assembly 4, wire rope 5, air cooler core bracket 1 and adjustable rolling support device 2 in sequence to complete the installation of one air cooler; repeat the above steps, and so on, to install another air cooler core 8 in the air cooler housing 82 tilted at the other end of the upper part of the frame 7.

[0045] In addition to the above embodiments, the present invention may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. A tooling for installing an air cooler for a marine V-type engine, characterized in that: The system includes an air cooler core support frame, an adjustable rolling support device, an upper pulley assembly, a lower pulley assembly, a traction wire rope, and a lever hoist. One end of the air cooler core support frame is fixed to the lower side of the inclined end face of the air cooler shell on the upper part of the frame. It includes an outer end angle plate, an inner end panel, a crossbar, a pair of longitudinal right-angle plates, and a pair of stiffening plates. The bottom edge length of the outer end angle plate is less than the vertical edge length, and a hook hole is provided in the middle of the bottom edge. The outer end angle plate, the inner end panel, and the pair of longitudinal right-angle plates are welded together to form a rectangular frame. Triangular stiffening plates are welded between the inner side of the vertical edge of the outer end angle plate and between the two ends of the bottom edge of the outer end angle plate. The two ends of the crossbar are welded to the middle of the inner side of the longitudinal right-angle plates. The right-angled surfaces of the stiffener plates are welded to the inner end panel and one end of the adjacent longitudinal right-angled plates respectively; the adjustable rolling support devices are respectively set on the middle of the outer side of the longitudinal right-angled plates, and the upper end of the adjustable rolling support device is supported on the lower side of the air cooler core; the upper pulley assembly and the lower pulley assembly are clamped and fixed on the upper and lower sides of two parallel cooling water distribution pipes; one end of the traction steel wire rope is connected to the lifting eye screw fixed at the center of one end of the air cooler core; the other end of the traction steel wire rope passes around the upper pulley assembly and the lower pulley assembly in sequence, then passes through the center hole of the inner end panel, and then connects to the hook at one end of the lever hoist; the hook at the other end of the lever hoist is hooked on the hook hole in the other end of the air cooler core support. The upper side of the vertical edge of the outer corner plate is provided with a retaining edge that is higher than the top surface of the longitudinal right-angle plate, and the height of the retaining edge A = 16~22mm; The ratio of the length B1 of the air cooler core to the length B2 of the longitudinal right-angle plate: B1 / B2 = 0.86~0.90; The adjustable rolling support device includes a rolling rod and a pair of support sliders, slider sleeves, fixing blocks and adjusting screws. The slider sleeves and fixing blocks are vertically welded and fixed to the middle of the vertical outer side of the longitudinal right-angle plate, one above the other. The lower ends of the support sliders are respectively embedded in the slider sleeves. The adjusting screws are respectively screwed into the central screw holes of the fixing blocks. One end of the adjusting screws extends into the countersunk holes at the lower end of the support sliders. The lower sides of both ends of the rolling rod are respectively supported in the semi-circular grooves at the top of the support sliders, and the upper side of the rolling rod is supported on the lower side of the air cooler core. The slider sleeve is made of square steel tube, and a gap is left between the supporting slider and the inner cavity of the square steel tube.

2. The installation fixture for the marine V-type engine air cooler as described in claim 1, characterized in that: The upper and lower pulley assemblies are symmetrically arranged with identical structures, including paired supports, pulleys, and pulley spindles. The supports are symmetrically arranged vertically, with two parallel cooling water distribution pipes clamped at both ends of the support base plate. The pulleys are embedded in the corresponding support ends, and the pulley spindles pass horizontally through the corresponding support ends and the center of the pulleys. Both ends of the pulley spindles are fixedly connected to the support upright plate. The two ends of the double-headed bolt tensioning screw pass vertically through the through holes on both sides of the center of the corresponding support base plate. By tightening the nuts at both ends of the tensioning screw, the supports are clamped between the two parallel cooling water distribution pipes. The support base plate has V-shaped grooves at both ends, and the upper and lower sides of the corresponding cooling water distribution pipes are clamped on both sides of the V-shaped grooves. The support base plate also has a central through hole for the traction steel wire rope to pass through.

3. An installation method using the mounting fixture for a marine V-type engine air cooler as described in claim 1 or 2, characterized in that: Includes the following steps: 1) First, fix the inner end panel of one end of the air cooler core bracket to the lower side of the inclined end face of the air cooler shell on the upper part of the frame with multiple fixing screws. 2) Next, install the upper pulley assembly and the lower pulley assembly, embedding the pulleys into the corresponding support ends. The pulley spindles pass horizontally through the corresponding support ends and pulleys, and the two ends of the pulley spindles are fixedly connected to the corresponding support plates by set screws. Then, the V-grooves at both ends of the support base plate of the upper pulley assembly and the V-grooves at both ends of the support base plate of the lower pulley assembly clamp the two parallel cooling water distribution pipes. Then, the tensioning screws are vertically passed through the through holes on both sides of the center of the corresponding support base plate, and the nuts at the ends of the tensioning screws are tightened to clamp and fix the upper pulley assembly and the lower pulley assembly to the two cooling water distribution pipes respectively. 3) Insert the lower ends of the support sliders into the slider sleeves respectively, then screw the adjusting screws upwards into the center screw holes of the fixed blocks respectively, and insert one end of the adjusting screw into the countersunk hole at the lower end of the support slider. Then support the lower sides of both ends of the rolling rod in the semi-circular grooves at the top of the support slider respectively to complete the installation of the adjustable rolling support device. 4) Tighten the eye bolt to the center of the other end of the air cooler core, then lift the air cooler core above the air cooler core support and tilt it down so that the upper edge of one end of the air cooler core support blocks one end of the air cooler core, and the other end of the air cooler core is supported on the rolling rod; use a wrench to turn the adjusting screw to adjust the tilt angle of the air cooler core so that the tilt angle of the air cooler core matches the tilt angle of the air cooler shell; 5) Connect one end of the traction wire rope to one end of the eye bolt. The other end of the traction wire rope first passes over the pulley of the upper pulley assembly, then through the central through hole of the support base plate, then passes over the pulley of the manual lower pulley assembly, and then through the central hole of the inner end panel of the air cooler core bracket and connects to the hook at one end of the lever hoist. The hook at the other end of the lever hoist is hooked on the hook hole at the other end of the air cooler core bracket. 6) Pull the lever hoist handle. The distance between the hooks at both ends of the lever hoist gradually shortens, thereby slowly pulling the air cooler core into the air cooler housing through the traction wire rope. When the stop edge at one end of the air cooler core approaches the rolling rod, use the wrench to turn the adjusting screw in the opposite direction to make the rolling rod disengage from the lower side of the air cooler core, and then pull out the rolling rod. Continue to turn the adjusting screw in the opposite direction to continue pulling the lever hoist handle to pull the air cooler core until the stop edge at one end of the air cooler core abuts against the outer end face of the air cooler housing. 7) Next, fix the stop edge of one end of the air cooler core to the end face of one end of the air cooler housing with a ring of screws. Then, fix the other end of the air cooler core to the stop edge inside the other end of the air cooler housing with two screws, so that the air cooler core is installed in the designated position inside the air cooler housing. Then, first remove the eye bolts and the traction wire rope, and then fix the rear cover plate to the other end port of the air cooler housing with a ring of screws to complete the installation of one air cooler core. 8) Finally, disassemble the lever hoist, upper pulley assembly, lower pulley assembly, wire rope, air cooler core bracket and adjustable rolling support device in sequence to complete the installation of one air cooler; repeat the above steps to install the other air cooler core into the air cooler shell tilted at the other end of the upper part of the frame.

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