Fixing device for piston support of marine main engine

Abstract

The invention relates to the technical field of marine main engine pistons, in particular to a marine main engine piston support fixing device. The device comprises a circular base, a plurality of placement cylinders are fixed to the top end of the circular base, supporting rods are slidably connected to the interiors of the placement cylinders, a plurality of limiting guide grooves are formed in the bottom end in the circular base, arc-shaped clamping plates are slidably connected to the two ends of the inner sides of the limiting guide grooves, and the two arc-shaped clamping plates are slidably connected in the placement cylinders; and a plurality of transmission wheels are rotationally connected into the circular base. According to the marine main engine piston support fixing device, when the gear rotates outwards to drive the multiple transmission wheels and the arc-shaped guide grooves to rotate, the transmission wheels drive the arc-shaped clamping plates to clamp supporting rods in the containing barrels in the direction of the arc-shaped guide grooves, and the dismounting effect of the supporting rods is improved conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of ship main engine pistons, and in particular to a ship main engine piston bracket fixing device. Background Art

[0002] The inspection and lifting of the ship's main engine piston is an important task in ship repair and maintenance, which involves in-depth inspection and repair of key components inside the main engine.

[0003] The main purpose of hoisting out the piston of the ship's main engine for maintenance is to conduct detailed inspection and repair of the parts and the combustion chamber that cannot be inspected at ordinary times, so as to ensure the normal operation of the main engine and extend its service life. These inspections and repairs may include replacing worn piston rings, repairing or replacing cylinder liners, and checking the amount of piston top ablation.

[0004] When using the above technology, it was found that the prior art has the following technical problems: In the prior art, the main engine maintenance tools on general ships generally have two sets of special brackets for main engine piston maintenance. The bracket is a two-piece combination and generally needs to be stored when not in use. It needs to be used when the main engine piston is hoisted out for maintenance. However, the shape and size of the bracket are inconvenient to store and fix. Some ships directly throw it in the utility room, which not only affects the appearance but also requires searching everywhere when using it. For this reason, we designed a ship main engine piston bracket fixing device that is easy to disassemble and store, which is used to provide another technical solution to the above technical problems. Summary of the invention

[0005] Based on this, it is necessary to provide a ship main engine piston bracket fixing device to address the above-mentioned technical problems. When the main engine piston needs to be lifted out for maintenance, several support rods are placed inside the placement cylinder and the circular base. Then, when the outward gear is rotated to drive several transmission wheels and arc guide grooves to rotate, the transmission wheel drives the arc clamping plate to clamp the support rod inside the placement cylinder along the direction of the arc guide groove, which facilitates the disassembly effect of the support rod and increases the stability of the support rod in supporting the main engine piston.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A ship main engine piston support fixing device comprises a circular base, a plurality of placement cylinders are fixed on the top of the circular base, a support rod is slidably connected inside the placement cylinder, a plurality of limiting guide grooves are provided at the bottom end inside the circular base, arc-shaped clamping plates are slidably connected at both ends of the inner side of the limiting guide grooves, two arc-shaped clamping plates are slidably connected inside the placement cylinder, a plurality of transmission wheels are rotatably connected inside the circular base, arc-shaped guide grooves are provided at both ends inside the transmission wheel, the inner side of the arc-shaped guide grooves is slidably connected to the arc-shaped clamping plates, and the two arc-shaped clamping plates are slidably connected to the support rod.

[0007] As a preferred embodiment of the ship main engine piston support fixing device provided by the present invention, the inner part of the circular base is rotatably connected with an outward gear, and the outer sides of the outward gear are respectively meshed and connected with a plurality of transmission wheels.

[0008] As a preferred embodiment of the ship main engine piston bracket fixing device provided by the present invention, a servo motor is fixed to the top of the circular base, and a transmission gear is fixed to the output end of the servo motor through the circular base, and the outer side of the transmission gear is meshed and connected with the outward gear.

[0009] As a preferred embodiment of the fixing device for the main engine piston support of a ship provided by the present invention, an anti-skid pad is provided at one end of the two arc-shaped clamping plates close to each other, and the anti-skid pad is used to improve the stability of the support rod.

[0010] As a preferred embodiment of the fixing device for the piston support of a main engine of a ship provided by the present invention, the circular base and the outward gear are in the shape of a ring.

[0011] As a preferred embodiment of the ship main engine piston support fixing device provided by the present invention, a U-shaped limit block is fixed to the outer side of the support rod, and the inner side of the U-shaped limit block is slidably connected with A connecting piece 1 and B connecting piece 2, and a positioning adjustment mechanism for tightening is arranged between A connecting piece 1 and B connecting piece 2.

[0012] As a preferred embodiment of the ship main engine piston bracket fixing device provided by the present invention, the positioning and adjustment mechanism includes A clamping block 1, B clamping block 2, A connecting block 1, B connecting block 2, a connecting seat, a threaded rod and a hand-turned cylinder, one end of the inside of the B connecting piece 2 is clamped with A clamping block 1, the end of the A connecting piece 1 close to the B connecting piece 2 is clamped with B clamping block 2, the outer side of the A clamping block 1 is rotatably connected to the A connecting block 1, the outer side of the B clamping block 2 is rotatably connected to the B connecting block 2, one end of the A connecting block 1 is rotatably connected to the connecting seat through a hinge, one end of the connecting seat is rotatably connected to the threaded rod, and the outer side of the threaded rod is threadedly connected to the B connecting block 2.

[0013] As a preferred implementation of the ship main engine piston support fixing device provided by the present invention, a protective sleeve is fixed to the top end of the support rod.

[0014] As a preferred embodiment of the ship main engine piston bracket fixing device provided by the present invention, a card slot is provided at one end of the A connecting piece 1 and the B connecting piece 2 that are close to each other, and a limiting slot is provided at one end of the A clamping block 1 and the B clamping block 2 that are close to each other, and the two limiting slots are respectively slidably connected to the card slots.

[0015] As a preferred embodiment of the fixing device for the piston support of a main engine of a ship provided by the present invention, it also includes a deck, and the bottom end of the circular base is fixed to the deck by bolts.

[0016] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0017] At the same time, through the above technical solutions, the present invention has at least the following beneficial effects: The present invention provides a fixing device for a piston support of a main engine of a ship. By starting a servo motor to drive a transmission gear and an outward gear to rotate synchronously, the outward gear drives a transmission wheel and an arc-shaped guide groove to clamp and limit the arc-shaped clamping plate to a support rod along the limiting guide groove, which is convenient for disassembly and assembly of the support rod. Secondly, the stability of fixing the bottom end of the support rod is improved, so that the device can be effectively stored and stored. When the A clamping block 1 and the B clamping block 2 are respectively clamped with the clamping grooves, the hand cylinder is then rotated to drive the threaded rod to be threadedly connected with the B connecting block 2, so that the threaded rod drives the A connecting block 1 and the A clamping block 1 and the B connecting block 2 and the B clamping block 2 to approach each other to tighten the A connecting piece 1 and the B connecting piece 2. Therefore, the A connecting piece 1 and the B connecting piece 2 are lifted to protect and fix the support rod, thereby increasing the stability of the support rod and the protective sleeve supporting the main engine piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall top view structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the circular base of the present invention; Figure 4 It is a schematic diagram of the connection structure between the arc-shaped clamping plate and the transmission wheel of the present invention; Figure 5 This is a schematic diagram of the sliding connection structure between the arc-shaped clamping plate and the support rod of the present invention; Figure 6 It is a schematic diagram of the connection structure between the limiting guide groove and the arc-shaped clamping plate of the present invention; Figure 7 This is a schematic diagram of the connection structure of the A connector 1 and the B connector 2 with the U-shaped limit block of the present invention; Figure 8This is a schematic diagram of the positioning adjustment mechanism structure of the present invention; Fig. 9 This is a schematic diagram of the connection structure of A clamping block 1 and A connecting block 1 of the present invention; Fig.10 It is a schematic diagram of the threaded connection structure between the B connecting block 2 and the threaded rod of the present invention.

[0020] In the figure: 1. round base; 2. placing cylinder; 3. supporting rod; 4. U-shaped limit block; 5. A connecting piece 1; 6. B connecting piece 2; 7. protective sleeve; 8. outward gear; 9. servo motor; 10. transmission gear; 11. arc-shaped clamping plate; 12. transmission wheel; 13. arc-shaped guide groove; 14. limit guide groove; 15. A clamping block 1; 16. B clamping block 2; 17. A connecting block 1; 18. B connecting block 2; 19. connecting seat; 20. threaded rod; 21. hand-turning cylinder. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] As in the background technology, in the prior art, there are two sets of special brackets for main engine piston maintenance in the main engine maintenance tools on general ships. The bracket is a two-piece combination type, which generally needs to be stored when not in use and needs to be used when the main engine piston is hoisted out for maintenance. However, the shape and size of the bracket are inconvenient to store and fix. Some ships directly throw it in the utility room, which not only affects the appearance but also needs to be searched everywhere when using it. For this reason, we design a ship main engine piston bracket fixing device that is easy to disassemble and store. In order to solve this technical problem, the present invention provides a fixing device for a piston support of a main engine of a ship.

[0023] Specifically, please refer to Figure 1-Figure 10 A ship main engine piston bracket fixing device specifically includes: A circular base 1 is provided, and a plurality of placing tubes 2 are fixed on the top of the circular base 1, and a support rod 3 is slidably connected inside the placing tube 2. A plurality of limiting guide grooves 14 are provided at the bottom end inside the circular base 1, and arc-shaped clamping plates 11 are slidably connected at both ends of the inner side of the limiting guide grooves 14. The two arc-shaped clamping plates 11 are slidably connected inside the placing tube 2. A plurality of transmission wheels 12 are rotatably connected inside the circular base 1, and arc-shaped guide grooves 13 are provided at both ends inside the transmission wheel 12. The inner side of the arc-shaped guide grooves 13 is slidably connected to the arc-shaped clamping plates 11, and the two arc-shaped clamping plates 11 are slidably connected to the support rod 3.

[0024] The present invention provides a ship main engine piston support fixing device. When the main engine piston needs to be lifted out for maintenance, a plurality of support rods 3 are placed inside a placement tube 2 and a circular base 1. Then, when the outward gear 8 is rotated to drive a plurality of transmission wheels 12 and an arc guide groove 13 to rotate, the transmission wheel 12 drives the arc clamping plate 11 to clamp the support rod 3 inside the placement tube 2 along the direction of the arc guide groove 13, so as to facilitate the disassembly effect of the support rod 3 and increase the stability of the support rod 3 supporting the main engine piston.

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] Embodiment 1 Reference Figure 1-Figure 6 A ship main engine piston bracket fixing device comprises a circular base 1, a plurality of placement cylinders 2 are fixed on the top of the circular base 1, a support rod 3 is slidably connected inside the placement cylinder 2, a plurality of limiting guide grooves 14 are provided at the bottom of the circular base 1, the limiting guide grooves 14 are used to limit and guide the arc clamping plate 11, and improve the sliding stability of the arc clamping plate 11, both ends of the inner side of the limiting guide groove 14 are slidably connected with the arc clamping plate 11, the two arc clamping plates 11 are slidably connected inside the placement cylinder 2, a plurality of transmission wheels 12 are rotatably connected inside the circular base 1, both ends of the inner side of the transmission wheel 12 are provided with arc guide grooves 13, the inner side of the arc guide groove 13 is slidably connected with the arc clamping plate 11, and the two arc clamping plates 11 are slidably connected with the support rod 3; When the main engine piston needs to be lifted out for maintenance, several support rods 3 are placed inside the placement cylinder 2 and the circular base 1, and then when the outward gear 8 is rotated to drive several transmission wheels 12 and the arc guide groove 13 to rotate, the transmission wheel 12 drives the arc clamping plate 11 to clamp the support rod 3 inside the placement cylinder 2 along the direction of the arc guide groove 13, which is convenient for improving the disassembly effect of the support rod 3 and increasing the stability of the support rod 3 supporting the main engine piston; The circular base 1 is internally rotatably connected with an outward gear 8, the circular base 1 and the outward gear 8 are in annular shape, and the outer sides of the outward gear 8 are respectively meshed and connected with a plurality of transmission wheels 12; A servo motor 9 is fixed to the top of the circular base 1, and a transmission gear 10 is fixed to the output end of the servo motor 9 through the circular base 1, and the outer side of the transmission gear 10 is meshed and connected with the outward gear 8; When the main engine piston needs to be supported, the servo motor 9 is started to drive the transmission gear 10 and the outward gear 8 to rotate synchronously, so that the outward gear 8 drives the transmission wheel 12 and the arc guide groove 13 to clamp the arc clamping plate 11 along the limiting guide groove 14 to limit the support rod 3, which is convenient for disassembly and assembly of the support rod 3, and secondly, improves the stability of the bottom end of the support rod 3; The two arc-shaped clamping plates 11 have anti-skid pads at one end close to each other, and the anti-skid pads are used to improve the stability of the support rod 3 .

[0029] Reference Figure 7-10 A fixing device for a piston support of a ship main engine, a U-shaped limit block 4 is fixed on the outer side of a support rod 3, an A connecting piece 1 5 and a B connecting piece 2 6 are slidably connected on the inner side of the U-shaped limit block 4, and a positioning adjustment mechanism for tightening is provided between the A connecting piece 1 5 and the B connecting piece 2 6; The positioning and adjusting mechanism drives the A connecting piece 1 5 and the B connecting piece 2 6 to fix the plurality of support rods 3 to prevent the support rods 3 from deforming the support of the main engine piston; The positioning adjustment mechanism includes an A clamping block 15, a B clamping block 16, an A connection block 17, a B connection block 18, a connection seat 19, a threaded rod 20 and a hand-turned cylinder 21. One end of the interior of the B connection piece 26 is clamped with the A clamping block 15, one end of the A connection piece 5 close to the B connection piece 26 is clamped with the B clamping block 16, the outer side of the A clamping block 15 is rotatably connected to the A connection block 17, the outer side of the B clamping block 16 is rotatably connected to the B connection block 18, one end of the A connection block 17 is rotatably connected to the connection seat 19 through a hinge, one end of the connection seat 19 is rotatably connected to the threaded rod 20, and the outer side of the threaded rod 20 is threadedly connected to the B connection block 18; A protective sleeve 7 is fixed to the top of the support rod 3, and the protective sleeve 7 is used to protect the main engine piston to prevent the support rod 3 from directly supporting the main engine piston and causing damage; A card slot is provided at one end of the A connecting piece 1 5 and the B connecting piece 2 6 close to each other, and a limit slot is provided at one end of the A card block 15 and the B card block 2 16 close to each other, and the two limit slots are respectively slidably connected with the card slot; When the support rod 3 is inserted into the interior of the placement tube 2 and clamped with the arc clamping plate 11, the A clamping block 15 and the B clamping block 2 16 are respectively clamped with the clamping grooves, and then the hand-turned tube 21 is rotated to drive the threaded rod 20 to be threadedly connected with the B connecting block 2 18, so that the threaded rod 20 drives the A connecting block 17 and the A clamping block 15 and the B connecting block 2 18 and the B clamping block 2 16 to move in a direction close to or away from each other. When the A clamping block 15 and the B clamping block 2 16 move in a direction close to each other, the A clamping block 15 and the B clamping block 2 16 drive the A connecting piece 1 5 and the B connecting piece 2 6 to be tightened, so that the A connecting piece 1 5 and the B connecting piece 2 6 can protect several support rods 3, thereby increasing the stability of the support rod 3 and the protective sleeve 7 supporting the main engine piston; It also includes a deck, and the bottom end of the circular base 1 is fixed to the deck by bolts. The deck and the circular base 1 are easily disassembled by the bolt connection.

[0030] The use process of the main engine piston support fixing device provided by the present invention is as follows: when the main engine piston needs to be lifted out for maintenance, a plurality of support rods 3 are placed inside the placement cylinder 2 and the circular base 1, and the servo motor 9 is started to drive the transmission gear 10 and the outward gear 8 to rotate synchronously, so that the outward gear 8 drives the transmission wheel 12 and the arc guide groove 13 to clamp the arc clamping plate 11 along the limit guide groove 14 to limit the support rod 3, which is convenient for rapid assembly of the support rod 3, and secondly, the stability of the bottom end fixation of the support rod 3 is improved; Then, to prevent the support rod 3 from deforming the main engine piston support, the A clamping block 15 and the B clamping block 2 16 are respectively clamped with the clamping groove, and then the hand cylinder 21 is rotated to drive the threaded rod 20 and the B connecting block 2 18 to be threadedly connected, so that the threaded rod 20 drives the A connecting block 17 and the A clamping block 15 and the B connecting block 2 18 and the B clamping block 2 16 to move in the direction of approaching or moving away from each other. When the A clamping block 15 and the B clamping block 2 16 move in the direction of approaching each other, the A clamping block 15 and the B clamping block 2 16 drive the A connecting piece 1 5 and the B connecting piece 2 6 to tighten, so that the A connecting piece 1 5 and the B connecting piece 2 6 can protect several support rods 3, thereby increasing the stability of the support rod 3 and the protective sleeve 7 on the main engine piston.

[0031] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fixing device for a piston support of a ship main engine, characterized in that: The invention comprises a circular base (1), a plurality of placement tubes (2) are fixed on the top of the circular base (1), a support rod (3) is slidably connected inside the placement tube (2), a plurality of limiting guide grooves (14) are provided at the bottom of the circular base (1), both ends of the inner side of the limiting guide groove (14) are slidably connected with arc-shaped clamping plates (11), two arc-shaped clamping plates (11) are slidably connected inside the placement tube (2), a plurality of transmission wheels (12) are rotatably connected inside the circular base (1), both ends of the inner side of the transmission wheel (12) are provided with arc-shaped guide grooves (13), the inner side of the arc-shaped guide grooves (13) is slidably connected with the arc-shaped clamping plates (11), and the two arc-shaped clamping plates (11) are slidably connected with the support rod (3).

2. A ship main engine piston support fixing device according to claim 1, characterized in that: An outward gear (8) is rotatably connected inside the circular base (1), and the outer sides of the outward gear (8) are respectively meshed and connected with a plurality of transmission wheels (12).

3. A ship main engine piston support fixing device according to claim 2, characterized in that: A servo motor (9) is fixed to the top of the circular base (1), and a transmission gear (10) is fixed to the output end of the servo motor (9) through the circular base (1), and the outer side of the transmission gear (10) is meshedly connected with the outward gear (8).

4. A ship main engine piston support fixing device according to claim 2, characterized in that: An anti-skid pad is provided at one end of the two arc-shaped clamping plates (11) close to each other, and the anti-skid pad is used to improve the stability of the support rod (3).

5. A ship main engine piston support fixing device according to claim 3, characterized in that: The circular base (1) and the outward gear (8) are ring-shaped.

6. A ship main engine piston support fixing device according to claim 2, characterized in that: A U-shaped limit block (4) is fixed on the outer side of the support rod (3), and an A connection piece 1 (5) and a B connection piece 2 (6) are slidably connected on the inner side of the U-shaped limit block (4), and a positioning adjustment mechanism for tightening is provided between the A connection piece 1 (5) and the B connection piece 2 (6).

7. A ship main engine piston support fixing device according to claim 6, characterized in that: The positioning adjustment mechanism comprises an A clamping block 1 (15), a B clamping block 2 (16), an A connecting block 1 (17), a B connecting block 2 (18), a connecting seat (19), a threaded rod (20) and a hand-turned cylinder (21); one end of the interior of the B connecting member 2 (6) is clamped with the A clamping block 1 (15); one end of the A connecting member 1 (5) close to the B connecting member 2 (6) is clamped with the B clamping block 2 (16); the outer side of the A clamping block 1 (15) is rotatably connected to the A connecting block 1 (17); the outer side of the B clamping block 2 (16) is rotatably connected to the B connecting block 2 (18); one end of the A connecting block 1 (17) is rotatably connected to the connecting seat (19) via a hinge; one end of the connecting seat (19) is rotatably connected to the threaded rod (20); the outer side of the threaded rod (20) is threadedly connected to the B connecting block 2 (18).

8. A ship main engine piston support fixing device according to claim 2, characterized in that: A protective sleeve (7) is fixed to the top end of the support rod (3).

9. A ship main engine piston support fixing device according to claim 7, characterized in that: A card slot is provided at one end of the A connecting piece 1 (5) and the B connecting piece 2 (6) close to each other, and a limit slot is provided at one end of the A card block 1 (15) and the B card block 2 (16) close to each other, and the two limit slots are respectively slidably connected to the card slots.

10. A ship main engine piston support fixing device according to claim 1, characterized in that: It also includes a deck, and the bottom end of the circular base (1) is fixed to the deck by bolts.

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