CN204997617U - Major diameter compression inner ring for ship engine - Google Patents

Abstract

The utility model discloses a large-diameter piston ring expander for a ship engine, which comprises a baffle plate, a piston ring block, a left-handed trapezoidal thread sleeve, a claw, a threaded rod, a slider, a right-handed trapezoidal thread sleeve, a guide rod, Handle rod and rolling bearing. The utility model drives the claws to move by rotating the threaded rod to realize the expansion of the large-diameter piston ring, requires less manpower, and reduces the labor intensity of workers. At the same time, the piston ring stopper can be rotated at a certain angle, which is suitable for the disassembly and assembly of piston rings with various specifications and large diameters, and has a wide range of applications.

Description

Large diameter piston ring expander for ship engine

technical field

The utility model relates to the technical field of piston ring expanders, in particular to a large-diameter piston ring expander for ship engines.

Background technique

The piston ring is a hard metal ring with openings, which is the core component inside the fuel engine, and it is also a vulnerable part, which needs to be disassembled and replaced frequently. When the piston ring is disassembled, it is necessary to use external force to stretch the opening of the piston ring to take it out or insert it into the groove of the outer wall of the piston. Most of the existing piston ring removal tools (such as piston ring removal pliers) need to rely on people to hold the handle of the tool to apply grip to make the piston ring open, especially when disassembling large-diameter piston rings, it is necessary to open the piston ring opening. The grip strength is relatively large, and the labor intensity of workers is high.

Utility model content

The utility model solves the problem that the piston ring needs to be disassembled by holding the handle of a tool to apply a grip force to open the piston ring, especially when disassembling and assembling a large-diameter piston ring, the problem of high labor intensity of workers is provided. diameter piston ring expander.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is: a large-diameter piston ring expander for a ship engine, including a baffle plate, a piston ring block, a left-handed trapezoidal thread sleeve, a claw, a threaded rod, a slider, a right-handed Trapezoidal thread sleeve, guide rod, handle rod and rolling bearing; one end of the handle rod is connected with the locking block, and the guide rod is installed on the locking block through the inner hexagonal bolt B, and the guide rods on both sides of the locking block are passed through copper bushings A slider is installed, and a threaded rod is installed on the top of the guide rod. The threaded rods are respectively provided with a left-handed trapezoidal thread and a right-handed trapezoidal thread. Inside, the copper bushing, left-handed trapezoidal thread sleeve, and right-handed trapezoidal threaded sleeve are all in interference fit with the slider. The sliders on both sides are equipped with piston ring stoppers through self-locking nuts and shafts. The piston rings on both sides Claws are installed on the stoppers through hexagon socket bolts A, baffles are installed on both ends of the handle rod through hexagon socket bolts C, and both ends of the threaded rods are installed between the baffles on both sides through rolling bearings. One end of the shaft is fixed by a circlip, and the other end is provided with an outer hexagon.

Further, a ball handle is installed on the free end of the handle rod.

Further, the left-handed trapezoidal thread sleeve, the right-handed trapezoidal thread sleeve and the slider are positioned and fastened by elastic cylindrical pins.

The utility model drives the claws to move by rotating the threaded rod to realize the expansion of the large-diameter piston ring, requires less manpower, and reduces the labor intensity of workers. At the same time, the piston ring stopper can be rotated at a certain angle, which is suitable for the disassembly and assembly of piston rings of various specifications and large diameters, and has a wide range of applications.

Description of drawings

Fig. 1 is a front view of the utility model;

Fig. 2 is a left view of the utility model;

Fig. 3 is a schematic diagram of the structure of the shaft.

Among them: 1. Baffle plate, 2. Retaining ring for shaft, 3. Piston ring stopper, 4. Left-handed trapezoidal thread sleeve, 5. Claw, 6. Threaded rod, 7. Hexagon socket bolt A, 8. Copper lining Set, 9. Slider, 10. Right-hand trapezoidal thread sleeve, 11. Hexagon socket bolt B, 12. Guide rod, 13. Hexagon socket bolt C, 14. Self-locking nut, 15. Shaft, 16. Handle rod, 17 . Lock block, 18. Ball handle, 19. Rolling bearing, 20. Elastic straight pin.

detailed description

As shown in Figures 1-3, a large-diameter piston ring expander for a ship engine includes a baffle plate 1, a piston ring stopper 3, a left-handed trapezoidal thread sleeve 4, a claw 5, a threaded rod 6, a slider 9, a right Spiral trapezoidal thread sleeve 10, guide bar 12, handle bar 16 and rolling bearing 19; The free end of handle bar 16 is equipped with ball handle 18, and the other end of handle bar 16 is connected with locking block 17, and on locking block 17, passes inner hexagon The bolt B11 is equipped with a guide rod 12, and the guide rod 12 on both sides of the locking block 17 is equipped with a slider 9 through a copper bush 8, and a threaded rod 6 is installed on the top of the guide rod 12, and the threaded rod 6 is provided with a left-handed screw respectively. Trapezoidal thread, right-handed trapezoidal thread, the threaded rod 6 is installed in the slider 9 on both sides through the left-handed trapezoidal thread sleeve 4, right-handed trapezoidal thread sleeve 10, copper bushing 8, left-handed trapezoidal thread sleeve 4, right-handed trapezoidal thread The sleeves 10 are interference fit with the slider 9, the left-handed trapezoidal thread sleeve 4, the right-handed trapezoidal thread sleeve 10 and the slider 9 are positioned and fastened by elastic cylindrical pins 20, and the sliders 9 on both sides are fixed by self-locking nuts 14. Piston ring stopper 3 is installed on shaft 15. The piston ring stopper 3 on both sides is equipped with claw 5 through hexagon socket bolt A7, and the two ends of handle rod 16 are installed with baffle plate through hexagon socket bolt C13. 1. Both ends of the threaded rod 6 are installed between the baffles 1 on both sides through rolling bearings 19, one end of the threaded rod 6 is fixed by the circlip 2 for the shaft, and the other end is provided with an outer hexagon. When in use, hold the outer hexagon with a socket wrench, rotate the threaded rod 6 to drive the left and right sliders 9 to move left and right respectively, adjust the distance between the two claws 5 to fit the opening of the piston ring, and use the claw 5 to clamp the open end of the piston ring Put the two sides of the open end in the piston ring stopper 3, and rotate the threaded rod 6 clockwise to move the sliders 9 on the left and right sides to the outside at the same time, driving the claws 5 to expand the piston ring; Take it out or insert it into the groove of the outer wall of the piston, then turn the threaded rod 6 counterclockwise to move the sliders 9 on the left and right sides to the inside at the same time, restore the piston ring, and take off the expander.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (3)

1. A large-diameter piston ring expander for a ship engine, characterized in that it includes a baffle (1), a piston ring stopper (3), a left-handed trapezoidal thread sleeve (4), a claw (5), a threaded rod (6 ), slide block (9), right-handed trapezoidal thread sleeve (10), guide rod (12), handle rod (16) and rolling bearing (19); one end of handle rod (16) is connected with locking block (17), A guide rod (12) is installed on the locking block (17) through an inner hexagonal bolt B (11), and a slider is installed on the guide rods (12) on both sides of the locking block (17) through a copper bushing (8). (9), threaded rod (6) is installed on the top of guide rod (12), is respectively provided with left-handed trapezoidal thread, right-handed trapezoidal thread on the threaded rod (6), and threaded rod (6) passes through left-handed trapezoidal thread sleeve (4) respectively ), the right-handed trapezoidal thread sleeve (10) is installed in the sliders (9) on both sides, the copper bushing (8), the left-handed trapezoidal threaded sleeve (4), the right-handed trapezoidal threaded sleeve (10) are all connected with the slider ( 9) Interference fit, piston ring stoppers (3) are movably installed on the sliders (9) on both sides through self-locking nuts (14) and shafts (15), and the piston ring stoppers (3) on both sides are Claws (5) are installed through hexagon socket bolts A (7), baffles (1) are installed at both ends of the handle rod (16) through hexagon socket bolts C (13), and both ends of the threaded rod (6) All are installed between the baffle plates (1) on both sides by rolling bearings (19), and one end of the threaded rod (6) is fixed by a circlip (2) for the shaft, and the other end is provided with an outer hexagon. 2. The large-diameter piston ring expander for marine engines according to claim 1, characterized in that: a ball handle (18) is installed at the free end of the handle rod (16). 3. The large-diameter piston ring expander for marine engines according to claim 1, characterized in that: the left-handed trapezoidal thread sleeve (4), the right-handed trapezoidal threaded sleeve (10) and the slider (9) The space is positioned and fastened by elastic cylindrical pins (20).