Dismounting device for sleeve parts of multi-fuel engine

Abstract

The utility model discloses a multi-fuel engine sleeve part dismounting device which comprises a lifting assembly, an adjustable supporting unit and a radial adjustable lifting unit, and the lifting assembly comprises a lifting screw and a lifting adjusting nut. The adjustable supporting unit comprises an upper support, an upper support adjusting nut, a lower holder, a compressed spring, a plurality of connecting rods and a plurality of adjustable supporting rod assemblies, the upper support comprises a central round pipe and a plurality of inclined rods, and the lower holder is located on the lower side of the upper support. The radial adjustable lifting unit comprises an upper cover plate, a loop gear, a shell, a plurality of lifting claw heads and a lower cover plate, a plurality of windows are evenly distributed in the peripheral face of the shell, and the ends of the short edges of the lifting claw heads transversely move out of the corresponding windows respectively. The inner side of the long edge of the lifting claw head is of a rack structure, and racks evenly distributed on the periphery of the outer edge of the loop gear are meshed with the loop gear. The multi-fuel engine disassembling tool can be used for disassembling sleeve parts of different types of engines, is good in universality, and obviously reduces the maintenance cost of multi-fuel engines.

Description

Technical Field

[0001] The utility model relates to a disassembly device for sleeve parts of a power machine, in particular to a device for disassembling a flame ring and a cylinder sleeve of an engine, belonging to the technical field of engine maintenance. Background Art

[0002] At present, the fuels used in multi-fuel engines mainly include LNG and alcohol-based fuels, among which alcohol-based fuels are mainly methanol fuels. Compared with LNG, methanol fuels have the advantages of easy storage, low emissions, and high energy efficiency. However, methanol and other alcohol-based fuels are corrosive and can easily corrode components such as the flame ring and cylinder liner around the combustion chamber of the engine, thereby reducing the service life of the above components. Long-term corrosion can also cause engine failures such as abnormal operation, cylinder scuffing, and lax valve closure. By replacing failed components, the service life of the engine can be extended, thereby significantly reducing the cost of using vehicles and generator sets equipped with the engine.

[0003] The existing disassembly devices for engine sleeve parts have too single functions, and are very easy to damage the inner hole surface of the sleeve parts during use, and are difficult to repair; they have a narrow scope of application and poor versatility. One disassembly device can only disassemble the engine sleeve parts of one engine model. Different specifications of disassembly devices need to be replaced for different engine models, and one device cannot be used for multiple purposes, which increases the maintenance cost of the engine. Utility Model Content

[0004] The utility model aims to provide a multi-fuel engine sleeve parts disassembly device, which is used for disassembling sleeve parts of multi-fuel engines of different models and reducing maintenance costs.

[0005] The utility model is realized through the following technical solutions:

[0006] A multi-fuel engine sleeve parts disassembly device, comprising a lifting assembly, an adjustable support unit and a radially adjustable lifting unit, wherein the lifting assembly comprises a lifting screw and a lifting adjustment nut, wherein the lifting screw comprises an upper screw, a middle stepped polished rod and a lower screw, and the lifting adjustment nut is screwed on the upper screw;

[0007] The adjustable support unit comprises an upper bracket, an upper bracket adjusting nut, a lower retaining frame, a compression spring, several connecting rods and several adjustable support rod assemblies, the upper bracket comprises a central circular tube and several oblique rods, and the radially evenly distributed oblique rods extend obliquely downward from the outer circle of the central circular tube; the lower retaining frame is located at the lower side of the upper bracket, and a spiral tube extends vertically upward from the center of the upper side of the lower retaining frame, and the spiral tube passes through the central circular tube, and the upper bracket adjusting nut is screwed on the upper end of the spiral tube, and the upper side of the upper bracket adjusting nut is against the lower side of the lifting and lowering adjusting nut, and the compression spring is sleeved on the lower part of the spiral tube and is located between the lower side of the central circular tube and the upper side of the lower retaining frame; the upper screw of the lifting screw rod passes through the center of the lower retaining frame, and the outer edges of the lower side of the lower retaining frame are respectively hinged to the upper ends of several evenly distributed adjustable support rod assemblies, the upper ends of the connecting rods are respectively hinged to the lower ends of the oblique rods, and the lower ends of the connecting rods are respectively hinged to the upper ends of the adjustable support rod assemblies, and the lower ends of the adjustable support rod assemblies are respectively supported on the outer edges of the circular tube fixings of the sleeve parts to be disassembled.

[0008] The radially adjustable lifting unit includes an upper cover plate, a loose gear, a shell, several lifting claw heads and a lower cover plate, a central shaft sleeve extending vertically upward from the center of the lower cover plate, a stepped shaft tube-shaped loose gear is nested on the outer circle of the central shaft sleeve and is clearance-matched with the central shaft sleeve, an upper shaft tube extends vertically upward from the upper center of the loose gear, and the upper shaft tube extends out of the center of the upper cover plate; the upper and lower sides of the ring-shaped shell are respectively fixedly connected to the upper cover plate and the lower cover plate, and several windows are evenly distributed on the outer circumference of the shell, and the short side ends of the L-shaped lifting claw heads are respectively moved horizontally out of the corresponding windows, and the inner side of the long side of the lifting claw head is a rack structure, and the racks evenly distributed around the outer edge of the loose gear are respectively meshed with the loose gear; the outer side of the long side end of one lifting claw head is adjacent to the inner side of the short side of another lifting claw head, and the lower screw of the lifting screw is screwed into the central shaft sleeve.

[0009] The purpose of the utility model can be further achieved by the following technical measures.

[0010] Furthermore, the thread outer diameter of the upper screw of the pulling screw is larger than the thread outer diameter of the lower screw, the outer circumference of the large end shaft of the middle stepped polished rod is provided with a pair of middle wrench openings, the outer circumference of the upper end of the center sleeve is provided with a pair of center sleeve wrench openings, and the outer circumference of the upper shaft tube end of the loose gear is provided with a pair of upper shaft tube wrench openings.

[0011] Furthermore, the adjustable support rod assembly includes an oblique connecting rod, a vertical sleeve and a vertical support rod. The upper ends of the oblique connecting rods are respectively hinged to the lower hinge seats on the lower outer edges of the lower retaining frame, the lower ends of the oblique connecting rods are respectively hinged to the upper ends of the vertical sleeves through middle hinge pins, the lower ends of the connecting rods are hinged to the grooves in the middle of the upper side of the oblique connecting rods, the upper part of the vertical support rods passes through the upper light hole of the vertical sleeve and then passes horizontally through the middle hinge pin upwards, the middle screw of the vertical support rod is screwed to the lower screw hole of the vertical sleeve, and the hexagonal disks radially extending at the bottom of the vertical support rods are respectively supported on the outer edges of the round tube fixings of the installed sleeve-type parts.

[0012] Furthermore, the outer side of the short side end of the lifting claw head is arc-shaped, and the outer circle formed by the arcs of several lifting claw heads is concentric with the outer circle of the shell.

[0013] Furthermore, the outer corner of the short side end of the lifting claw head is rounded, the inner side surface where the short side and the long side of the lifting claw head intersect is arc-shaped, and the arc radius R is greater than the rounded arc radius r.

[0014] Furthermore, a central sleeve extends vertically downward from the lower side of the lifting adjustment nut, and the bottom of the central sleeve abuts against the upper side of the upper bracket adjustment nut. The inner diameter D1 of the central sleeve is larger than the outer diameter D2 of the spiral tube on the upper side of the lower retaining frame.

[0015] The utility model has a compact structure. By twisting the central sleeve of the radially adjustable lifting unit, several lifting claws can be retracted synchronously. After the radially adjustable lifting unit moves down to the bottom of the sleeve part, several lifting claws can be moved outward synchronously to abut against the bottom of the sleeve part, so as to facilitate the pulling of the sleeve part without damage. By twisting the upper bracket adjustment nut, the size of the support range enclosed by several vertical support rods supported on the upper side of the round tube fixing can be synchronously adjusted. The utility model can be used to disassemble sleeve parts of different models of engines, has good versatility, and significantly reduces the maintenance cost of multi-fuel engines.

[0016] Advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments, which are given as examples only with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the disassembly device of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model in use;

[0019] Figure 3 yes Figure 1 A-direction view;

[0020] Figure 4 yes Figure 1 BB cross-section enlarged view. DETAILED DESCRIPTION

[0021] The utility model is further described below through the accompanying drawings and embodiments.

[0022] like Figure 1 to Figure 4As shown, this embodiment includes a lifting assembly 1, an adjustable supporting unit 2 and a radially adjustable lifting unit 3. The lifting assembly 1 includes a lifting screw 11 and a lifting adjustment nut 12. The lifting screw 11 includes an upper screw 111, a middle stepped rod 112 and a lower screw 113. The lifting adjustment nut 12 is screwed onto the upper screw 111.

[0023] The adjustable support unit 2 includes an upper support 21, an upper support adjustment nut 22, a lower retaining frame 23, a compression spring 24, four connecting rods 25 and four adjustable support rod assemblies 26. The upper support 21 includes a central circular tube 211 and four inclined rods 212 perpendicular to each other. The radially evenly distributed inclined rods 212 extend downwardly from the outer circle of the central circular tube 211. The lower retaining frame 23 is located at the lower side of the upper support 21. A screw 231 extends vertically upward from the center of the upper side of the lower retaining frame 23. The screw 231 passes through the central circular tube 211. The upper support adjustment nut 22 is screwed on the upper end of the screw 231. The upper side of the upper support adjustment nut 22 abuts against the lower side of the lifting adjustment nut 12. The compression spring 24 is sleeved on the lower part of the screw 231 and is located between the lower side of the central circular tube 211 and the upper side of the lower retaining frame 23. The upper screw 111 of the lifting screw 11 passes through the center of the lower retainer 23, and the lower outer edge of the lower retainer 23 is respectively hinged to the upper ends of the four evenly distributed adjustable support rod assemblies 26, the upper end of the connecting rod 25 is respectively hinged to the lower end of the inclined rod 212, and the lower end of the connecting rod 25 is respectively hinged to the upper part of the adjustable support rod assembly 26, and the lower end of the adjustable support rod assembly 26 is respectively supported on the outer edge of the round tube fixing member 20 of the sleeve part 10 to be disassembled. The lower side of the lifting adjustment nut 12 extends vertically downward to extend a central sleeve 121, and the bottom of the central sleeve 121 is against the upper side of the upper bracket adjustment nut 22. The inner diameter D1 of the central sleeve is larger than the outer diameter D2 of the spiral tube on the upper side of the lower retainer 23, which facilitates the lifting and lowering of the lower retainer 23 to adjust the support range of the adjustable support unit 2 and meet the needs of disassembling sleeve parts of different models of multi-fuel engines.

[0024] The radially adjustable lifting unit 3 comprises an upper cover plate 31, a loose gear 32, a housing 33, four lifting claws 34 and a lower cover plate 35. A central sleeve 351 extends vertically upward from the center of the lower cover plate 35. The stepped shaft tube-shaped loose gear 32 is nested on the outer circle of the central sleeve 351 and is in clearance fit with the central sleeve 351. An upper shaft tube 321 extends vertically upward from the upper center of the loose gear 32, and the upper shaft tube 321 extends out of the center of the upper cover plate 31. The upper and lower sides of the annular housing 33 are respectively fixedly connected to the upper cover plate 31 and the lower cover plate 35. Four windows 331 are evenly distributed on the outer circumference of the housing 33. The short sides 341 of the L-shaped lifting claws 34 are respectively moved horizontally out of the corresponding windows 331. The inner side of the long side 342 of the lifting claws 34 is a rack 343 structure. The racks 343 evenly distributed around the outer edge of the loose gear are respectively meshed with the loose gear 32. The outer side of the end of the long side 342 of one lifting claw head 34 is respectively adjacent to the inner side of the short side 341 of the other lifting claw head 34. The lower screw rod 113 of the lifting screw rod 11 is screwed into the central sleeve 351.

[0025] The thread outer diameter of the upper screw 111 of the lifting screw 11 is larger than the thread outer diameter of the lower screw 113, and a pair of middle wrench openings 114 are provided on the outer circumference of the large end shaft of the middle step polished rod 112, so that when the radially adjustable lifting unit 3 is lifted or lowered, it is convenient to clamp the lifting screw 11 with a wrench to prevent its rotation from hindering the lifting or lowering of the radially adjustable lifting unit 3. A pair of center sleeve wrench openings 352 are provided on the outer circumference of the upper end of the center sleeve 351, and a pair of upper shaft tube wrench openings 322 are provided on the outer circumference of the upper shaft tube 321 of the loose gear 32, so as to facilitate the adjustment of the synchronous extension and retraction of the four lifting claw heads 34.

[0026] The outer side of the end of the short side 341 of the lifting claw head 34 is arc-shaped, and the outer circle formed by the arcs of the four lifting claw heads 34 is concentric with the outer circle of the shell 33. The outer corner of the end of the short side 341 of the lifting claw head 34 is rounded, and the inner side surface of the intersection of the short side 341 and the long side 342 of the lifting claw head 34 is arc-shaped, and the arc radius R is greater than the rounded arc radius r. Figure 4 The figure shows the lifting claw heads 34 being retracted to their limit positions, respectively, and the rounded ends of the adjacent short sides 341 and the inner arcs of the long sides 342 of the two lifting claw heads 34 will not interfere with each other.

[0027] like Figure 2As shown, the adjustable support rod assembly 26 includes an oblique connecting rod 261, a vertical sleeve 262 and a vertical support rod 263. The upper ends of the oblique connecting rod 261 are respectively hinged to the lower hinge seats 232 on the outer edges of the lower sides of the lower retaining frame 23, and the lower ends of the oblique connecting rod 261 are respectively hinged to the upper ends of the vertical support rods 263 through the middle hinge pin 264. The lower end of the connecting rod 25 is hinged to the groove 2611 in the middle of the upper side of the oblique connecting rod 261. The upper part of the vertical support rod 263 passes through the upper light hole 2621 of the vertical sleeve and then passes through the middle hinge pin 264 horizontally upward. The middle screw 265 of the vertical support rod 263 is screwed to the lower screw hole 2622 of the vertical sleeve, and the hexagonal disks 2631 radially extending from the bottom of the vertical support rod 263 are respectively supported on the outer edges of the round tube fixings 20 of the mounting sleeve parts 10.

[0028] The process of disassembling the multi-fuel engine sleeve parts by using the utility model is as follows:

[0029] 1) Use a wrench to turn the center shaft sleeve wrench mouth 322 of the radially adjustable lifting unit 1 counterclockwise, and the loose gear 32 rotates counterclockwise, and the lifting claw heads 34 are driven to move inward synchronously through the racks 343 respectively meshing with the loose gears 32, so that the outer circle diameter formed by the arc-shaped ends of the short sides 341 of the four lifting claw heads 34 is smaller than the inner diameter of the sleeve-like part 10, so that the radially adjustable lifting unit 3 can be moved down to the bottom lower side of the sleeve-like part 10, completing the inward adjustment of the outer circle of the radially adjustable lifting unit 2.

[0030] 2) When the upper bracket adjusting nut 22 is turned clockwise with a wrench, the upper bracket 21 moves downward, the compression spring 24 is compressed, and the connecting rods 25 move downward respectively, pushing the oblique connecting rods 261 to rotate counterclockwise around the center of the lower hinge seat 232 on the lower outer edge of the lower retaining frame 23, and the vertical support rods 263 of the adjustable support rod assembly 26 are retracted inward respectively, and the support range enclosed by the bottom of the four vertical support rods 263 is reduced. When the upper bracket adjustment nut 12 is turned counterclockwise with a wrench, the upper bracket 21 moves upward under the reset force of the compression spring 24, and the inclined connecting rod 212 rotates clockwise around the center of the lower hinge seat 231 at the lower outer edge of the lower retaining frame 23 under the pull of the connecting rod 25. Under the reset force of the compression spring 24, the upper bracket 21 rotates clockwise around the center of the lower hinge seat 231 at the lower outer edge of the retaining frame 23, and the vertical supporting rods 263 of the adjustable supporting rod assembly 26 expand outward respectively, and the support range enclosed by the bottom of the four vertical supporting rods 263 increases. Therefore, the support range enclosed by the four vertical supporting rods 263 supported on the upper side of the circular tube fixing member 20 can be adjusted according to the outer edge size of the circular tube fixing member 20 of the mounting sleeve type parts 10 of different models of engines.

[0031] Use a wrench to respectively tighten the hexagonal disk 2631 at the bottom of the vertical support rod 263, and adjust the distance H2 between the center of the middle hinge pin 264 and the top surface of the round tube fixing part 20 according to the distance H1 between the bottom surface of the installed sleeve-like part 10 and the upper side of the round tube fixing part 20, so that H2>H1; complete the adjustment of the radial and height dimensions of the adjustable support unit 2.

[0032] 3) Use a wrench to clamp a pair of middle wrench openings 114 of the lifting screw 1 to prevent the lifting screw 11 from rotating; then use another wrench to turn the lifting adjustment nut 12 counterclockwise, and the lifting screw 11 drives the four lifting claws 34 of the radially adjustable lifting unit 3 to descend until the upper side of the short sides 341 of the four lifting claws 34 extending out of the shell 33 are located on the lower side of the lower side of the sleeve-like part 10.

[0033] Then use a wrench to turn the center shaft sleeve wrench mouth 322 clockwise, the loose gear 32 rotates clockwise, and the racks 343 meshing with the loose gears 32 respectively drive the lifting claw heads 34 to move outward synchronously, so that the outer circle diameter formed by the arc-shaped ends of the short sides 341 of the four lifting claw heads 34 is larger than the inner diameter of the installed sleeve-type parts 10, thereby completing the preparations before disassembling the sleeve-type parts 10.

[0034] 4) Use a wrench to clamp the pair of middle wrench openings 114 of the lifting screw 11 to prevent the lifting screw 11 from rotating. Then use another wrench to turn the lifting adjustment nut 12 clockwise, and the lifting screw 11 drives the four lifting claws 34 of the radially adjustable lifting unit 3 to pull the sleeve part 10 vertically upward until the bottom of the sleeve part 10 is separated from the round tube fixing part 20, and the disassembly of the sleeve part 10 is completed.

[0035] In addition to the above-mentioned embodiments, the present invention may also have other implementation modes. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A multi-fuel engine sleeve parts disassembly device, characterized in that: It includes a lifting assembly, an adjustable support unit and a radially adjustable lifting unit. The lifting assembly includes a lifting screw and a lifting adjustment nut. The lifting screw includes an upper screw, a middle stepped polished rod and a lower screw. The lifting adjustment nut is screwed on the upper screw. The adjustable support unit comprises an upper bracket, an upper bracket adjusting nut, a lower retaining frame, a compression spring, several connecting rods and several adjustable support rod assemblies, the upper bracket comprises a central circular tube and several oblique rods, and the radially evenly distributed oblique rods extend obliquely downward from the outer circle of the central circular tube; the lower retaining frame is located at the lower side of the upper bracket, and a spiral tube extends vertically upward from the center of the upper side of the lower retaining frame, and the spiral tube passes through the central circular tube, and the upper bracket adjusting nut is screwed on the upper end of the spiral tube, and the upper side of the upper bracket adjusting nut is against the lower side of the lifting and lowering adjusting nut, and the compression spring is sleeved on the lower part of the spiral tube and is located between the lower side of the central circular tube and the upper side of the lower retaining frame; the upper screw of the lifting screw rod passes through the center of the lower retaining frame, and the outer edges of the lower side of the lower retaining frame are respectively hinged to the upper ends of several evenly distributed adjustable support rod assemblies, the upper ends of the connecting rods are respectively hinged to the lower ends of the oblique rods, and the lower ends of the connecting rods are respectively hinged to the upper ends of the adjustable support rod assemblies, and the lower ends of the adjustable support rod assemblies are respectively supported on the outer edges of the circular tube fixings of the sleeve parts to be disassembled. The radially adjustable lifting unit includes an upper cover plate, a loose gear, a shell, several lifting claw heads and a lower cover plate, a central shaft sleeve extending vertically upward from the center of the lower cover plate, a stepped shaft tube-shaped loose gear is nested on the outer circle of the central shaft sleeve and is clearance-matched with the central shaft sleeve, an upper shaft tube extends vertically upward from the upper center of the loose gear, and the upper shaft tube extends out of the center of the upper cover plate; the upper and lower sides of the ring-shaped shell are respectively fixedly connected to the upper cover plate and the lower cover plate, and several windows are evenly distributed on the outer circumference of the shell; the short side ends of the L-shaped lifting claw heads are respectively moved horizontally out of the corresponding windows, and the inner side of the long side of the lifting claw heads is a rack structure, and the racks evenly distributed around the outer edge of the loose gear are respectively meshed with the loose gear; the outer side of the long side end of one lifting claw head is adjacent to the inner side of the short side of another lifting claw head, and the lower screw of the lifting screw is screwed into the central shaft sleeve.

2. The multi-fuel engine sleeve parts disassembly device according to claim 1, characterized in that: The thread outer diameter of the upper screw of the pulling screw is larger than the thread outer diameter of the lower screw, the outer circumference of the large end shaft of the middle stepped polished rod is provided with a pair of middle wrench openings, the outer circumference of the upper end head of the center sleeve is provided with a pair of center sleeve wrench openings, and the outer circumference of the upper shaft tube end head of the loose gear is provided with a pair of upper shaft tube wrench openings.

3. The multi-fuel engine sleeve parts disassembly device according to claim 1, characterized in that: The adjustable support rod assembly includes an oblique connecting rod, a vertical sleeve and a vertical support rod. The upper ends of the oblique connecting rods are respectively hinged to the lower hinge seats on the outer edge of the lower side of the lower retaining frame, the lower ends of the oblique connecting rods are respectively hinged to the upper ends of the vertical sleeves through the middle hinge pins, the lower ends of the connecting rods are hinged to the grooves in the middle of the upper side of the oblique connecting rods, the upper part of the vertical support rods passes through the upper light hole of the vertical sleeves and then passes through the middle hinge pins horizontally upwards, the middle screw of the vertical support rods is screwed to the lower screw hole of the vertical sleeves, and the hexagonal disks extending radially at the bottom of the vertical support rods are respectively supported on the outer edges of the round tube fixings for installing sleeve-like parts.

4. The multi-fuel engine sleeve parts disassembly device according to claim 1, characterized in that: The outer side of the short side end of the lifting claw head is arc-shaped, and the outer circle formed by the arcs of the plurality of lifting claw heads is concentric with the outer circle of the shell.

5. The multi-fuel engine sleeve parts disassembly device according to claim 1, characterized in that: The outer corner of the short side end of the lifting claw head is rounded, the inner side surface where the short side and the long side of the lifting claw head intersect is arc-shaped, and the arc radius R is greater than the rounded arc radius r.

6. The multi-fuel engine sleeve parts disassembly device according to claim 1, characterized in that: A central sleeve extends vertically downward from the lower side of the lifting adjustment nut, and the bottom of the central sleeve abuts against the upper side of the upper bracket adjustment nut. The inner diameter D1 of the central sleeve is greater than the outer diameter D2 of the spiral tube on the upper side of the lower retaining frame.

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