A positioning tooling and positioning method for the flange of a marine diesel engine pedestal

Abstract

The present invention relates to a positioning tooling and a positioning method for a marine diesel engine seat flange. The tooling includes an outer ring, and the outer ring includes a first component with male fasteners provided at both ends and a second component with female fasteners provided at both ends. The first component and the second component are spliced into the outer ring through the male fasteners and the female fasteners. A connecting block is provided on the outer ring, and the outer ring is connected with an inner ring through the connecting block. The inner ring is composed of two inner half-rings. Two or more tooth grooves are provided on the inner ring along its circumferential direction. Two or more positioning mechanisms for positioning the flange are provided on the outer ring at equal intervals along its circumferential direction; the present invention utilizes a plurality of synchronously moving screw shafts to extrude the side wall of the flange, so that two staggered flanges can be quickly and accurately positioned and docked. It not only has a simple structure, but also has a high positioning accuracy, does not require measurement, and effectively improves the efficiency of flange positioning.

Description

Technical Field

[0001] The present invention belongs to the technical field of positioning tooling, and particularly relates to a positioning tooling and a positioning method for a flange of a marine diesel engine seat. Background Technique

[0002] Flange connection means that two pipelines, pipe fittings or equipment are first fixed on a flange plate respectively. Between the two flange plates, a flange gasket is added and fastened together with bolts to complete the connection.

[0003] When installing and fixing a diesel engine seat, it is usually necessary to position the flange position. The conventional operation is manual measurement and assembly according to the approximate position, which often has low accuracy, resulting in low efficiency of installation and positioning. Especially for some large diesel engines, the measurement is difficult, thus affecting the assembly of the diesel engine. Summary of the Invention

[0004] The purpose of the present invention is to provide a positioning tooling and a positioning method for a flange of a marine diesel engine seat in order to solve the problems raised in the above background technique.

[0005] The present invention achieves the above purpose through the following technical solutions:

[0006] A positioning tooling for a flange of a marine diesel engine seat includes an outer ring. The outer ring includes a first component with male fasteners at both ends and a second component with female fasteners at both ends. The first component and the second component are spliced into the outer ring through the male and female fasteners. A connecting block is provided on the outer ring, and the outer ring is connected with an inner ring through the connecting block. The inner ring is composed of two inner half-rings. Two or more tooth grooves are provided on the inner ring along its circumferential direction. Two or more positioning mechanisms for positioning the flange are provided on the outer ring at equal intervals along its circumferential direction;

[0007] The positioning mechanism includes a first gear provided on the outer ring and meshing with the tooth groove, a lead screw shaft passing through the first gear and threadedly connected with the first gear, a limiting block provided on the lead screw shaft, and a clamping block provided on the outer ring for limiting the position of the limiting block.

[0008] Preferably, two or more active telescopic rods are provided on the outer ring along its circumferential direction. Two or more arc-shaped pressing blocks for pressing the active telescopic rods are provided on the inner ring. A return spring for resetting is provided in the inner cavity of the active telescopic rod. Two or more first adjusting telescopic rods are provided on the outer ring. A second adjusting telescopic rod is provided on the first adjusting telescopic rod. A limiting bolt is provided on the second adjusting telescopic rod. An adjusting rod with a cavity structure is provided on the limiting bolt. Two or more ejector rods are provided on the adjusting rod along its circumferential direction. An air pipe is provided between the inner cavity of the adjusting rod and the inner cavity of the active telescopic rod. The active telescopic rod is used for supplying air to the inner cavity of the adjusting rod.

[0009] Preferably, a pressing strip is provided at one end of the lead screw shaft close to the center of the inner ring, and the pressing strip is parallel to the axis of the inner ring.

[0010] Preferably, a second gear meshing with the tooth groove is provided on the outer ring, and a crank is provided on the second gear.

[0011] Preferably, the second gear is less than one-tenth of the diameter of the inner ring.

[0012] A method for positioning the flange of a marine diesel engine seat using the positioning tooling for the flange of a marine diesel engine seat according to any one of the above, comprising the following steps:

[0013] S1: Align the flange of the diesel engine base with the butt flange, and make the surfaces of the flange of the diesel engine base and the butt flange fit.

[0014] S2: Put the outer ring and the inner ring on the outside of the base flange, fix the outer ring through the male buckle and the female buckle, rotate the inner ring to drive the first gear to rotate, thereby driving the axial movement of the lead screw shaft, and use the lead screw shaft to extrude the flange of the diesel engine base and the butt flange, so that the flange of the diesel engine base and the butt flange are successfully butted.

[0015] S3: Remove the outer ring and the inner ring from the flange of the diesel engine base and the butt flange, and install the pin on the flange to complete the positioning of the flange.

[0016] The beneficial effects of the present invention are as follows:

[0017] Using multiple synchronously moving lead screw shafts to extrude the side wall of the flange, so that two staggered flanges can be quickly and accurately positioned and butted, which not only has a simple structure, but also has high positioning accuracy, does not require measurement, and effectively improves the efficiency of flange positioning. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the present invention;

[0019] Figure 2 is Figure 1 the enlarged schematic diagram at A in

[0020] Figure 3 is the working state schematic diagram of the present invention;

[0021] Figure 4 is the schematic diagram of the positional relationship between the adjusting rod and the pressing strip in the present invention.

[0022] In the figure: 1. Outer ring; 2. Male buckle; 3. First component; 4. Female buckle; 5. Second component; 6. Connecting block; 7. Inner ring; 8. Inner semi-ring; 9. Tooth groove; 10. First gear; 11. Lead screw shaft; 12. Limit block; 13. Clamping block; 14. Active telescopic rod; 15. Arc-shaped pressing block; 16. First adjusting telescopic rod; 17. Second adjusting telescopic rod; 18. Limit bolt; 19. Adjusting rod; 20. Pressing strip; 21. Second gear; 22. Crank; 23. Jack rod. Detailed implementation mode

[0023] The following is a more detailed description of the present application. It is necessary to point out here that the following specific implementation modes are only used for further explanation of the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] Embodiment 1

[0025] As Figures 1-4 shown, a positioning tooling for the flange of a marine diesel engine base includes an outer ring 1. The outer ring 1 includes a first component 3 with male buckles 2 at both ends and a second component 5 with female buckles 4 at both ends. The first component 3 and the second component 5 are spliced into the outer ring 1 through the male buckles 2 and the female buckles 4. A connecting block 6 is provided on the outer ring 1. The outer ring 1 is connected with an inner ring 7 through the connecting block 6. The inner ring 7 is composed of two inner semi-rings 8. Two or more tooth grooves 9 are provided on the inner ring 7 along its circumferential direction. Two or more positioning mechanisms for positioning the flange are provided on the outer ring 1 at equal intervals along its circumferential direction;

[0026] The positioning mechanism includes a first gear 10 provided on the outer ring 1 and meshing with the tooth groove 9, a lead screw shaft 11 passing through the first gear 10 and threadedly connected with the first gear 10, a limit block 12 provided on the lead screw shaft 11, and a clamping block 13 provided on the outer ring 1 for limiting the position of the limit block 12.

[0027] As a further solution of the present invention, a pressing strip 20 is provided at one end of the lead screw shaft 11 close to the center of the inner ring 7, and the pressing strip 20 is parallel to the axis of the inner ring 7.

[0028] In the above embodiment, after the flange of the diesel engine base is roughly aligned with the butt - joint flange, the outer ring 1 and the inner ring 7 are sleeved on the flange, so that the inner ring 7 encircles the flange. Then the male buckle 2 and the female buckle 4 are spliced together, and the limit pin is inserted from the side of the female buckle 4, so that the outer ring 1 is in a stable state, and at this time the inner ring 7 will not fall off. Rotate the inner ring 7, and the tooth grooves 9 on the inner ring 7 drive more than two first - stage gears 10 to rotate. Since the lead screw shaft 11 is limited in rotation by the clamping block 13, and because the first - stage gear 10 is threadedly connected to the lead screw shaft 11, when the first - stage gear 10 rotates, the lead screw shaft 11 moves along its length direction towards the center of the inner ring 7. More than two lead screw shafts 11 move simultaneously. When the end of the lead screw shaft 11 contacts the side walls of the flange of the diesel engine base and the butt - joint flange and continues to move, the two misaligned parts of the flange are adjusted to be in the correct butt - joint position. After the positioning of the flange is completed, the limit pin is pulled out, and the outer ring 1 and the inner ring 7 can be removed from the flange.

[0029] Among them, the setting of the pressing strip 20 can squeeze both parts of the flange, ensuring the normal progress of the extrusion.

[0030] As a further solution of the present invention, more than two active telescopic rods 14 are arranged on the outer ring 1 along its circumferential direction, and more than two arc - shaped pressing blocks 15 for squeezing the active telescopic rods 14 are arranged on the inner ring 7. A return spring for resetting is arranged in the inner cavity of the active telescopic rod 14. More than two first - stage adjusting telescopic rods 16 are arranged on the outer ring 1. A second - stage adjusting telescopic rod 17 is arranged on the first - stage adjusting telescopic rod 16. A limit bolt 18 is arranged on the second - stage adjusting telescopic rod 17. An adjusting rod 19 with a cavity structure is arranged on the limit bolt 18. More than two ejector rods 23 are arranged on the adjusting rod 19 along its circumferential direction. A trachea is arranged between the inner cavity of the adjusting rod 19 and the inner cavity of the active telescopic rod 14, and the active telescopic rod 14 is used to supply gas to the inner cavity of the adjusting rod 19.

[0031] In the above embodiment, by rotating and telescoping the first - stage adjusting telescopic rod 16 and telescoping the second - stage adjusting telescopic rod 17 to adjust the position of the limit bolt 18, the limit bolt 18 is inserted into the positioning hole of one of the flanges. Since the diameter of the adjusting rod 19 is smaller than the diameter of the flange positioning hole, the adjusting rod 19 enters the positioning hole of the other flange, and there is no contact between the ejector rod 23 and the positioning hole of the flange. During the rotation of the inner ring 7, the arc - shaped pressing block 15 is driven to move, so that the arc - shaped pressing block 15 can squeeze the active telescopic rod 14, thereby causing the gas in the inner cavity of the active telescopic rod 14 to be pressed into the inner cavity of the adjusting rod 19, and further causing the ejector rod 23 to be pushed outwards. During the outward movement of the ejector rod 23, it can contact the positioning hole and form an extrusion on the hole wall of the positioning hole, so that the misaligned positioning holes of the two flanges are realigned and on the same axis, which helps the final insertion of the pin, that is, helps to improve the positioning accuracy and efficiency of the flange.

[0032] The return spring can ensure that the active telescopic rod 14 automatically extends when the arc-shaped pressing block 15 is away from the active telescopic rod 14, so that the push rod 23 can repeatedly adjust the positioning hole.

[0033] As a further solution of the present invention, a second gear 21 meshing with the tooth groove 9 is provided on the outer ring 1 , and a crank 22 is provided on the second gear 21 .

[0034] As a further solution of the present invention, the second gear 21 is smaller than one tenth of the diameter of the inner ring 7 .

[0035] In the above embodiment, the second gear 21 is provided and the second gear 21 is rotated by the crank 22, so that the second gear 21 drives the inner ring 7 to rotate during the rotation. Because the diameter of the second gear 21 is smaller than the diameter of the inner ring 7, the force required to rotate the second gear 21 is smaller than the force required to rotate the inner ring 7, which makes the rotation of the inner ring 7 easier and solves the problem that the inner ring 7 is difficult to rotate when positioning a large flange.

[0036] A method for positioning a marine diesel engine base flange using any of the marine diesel engine base flange positioning tools described above comprises the following steps:

[0037] S1: Align the flange of the diesel engine base with the docking flange, and make the flange of the diesel engine base fit the surface of the docking flange; when the flange of the diesel engine base and the docking flange are docked, it is difficult to get them in place at one time due to the large reminder, and fine adjustments can only be made after they are roughly aligned.

[0038] S2: Put the outer ring 1 and the inner ring 7 on the outside of the base flange, fix the outer ring 1 by the male buckle 2 and the female buckle 4, rotate the inner ring 7 to drive the No. 1 gear 10 to rotate, thereby driving the screw shaft 11 to move axially, and use the screw shaft 11 to squeeze the flange of the diesel engine base and the docking flange, so that the flange of the diesel engine base and the docking flange are successfully docked; more than two screw shafts 11 move at the same time, and continue to move when the end of the screw shaft 11 contacts the flange of the diesel engine base and the side wall of the docking flange, so that the two staggered flanges are adjusted to be in the correct docking position.

[0039] S3: Remove the outer ring 1 and the inner ring 7 from the flange of the diesel engine base and the butt flange, install the latch on the flange, and complete the positioning of the flange.

[0040] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. A positioning tooling for the flange of a marine diesel engine base, characterized in that: It includes an outer ring (1), the outer ring (1) includes a first component (3) with male fasteners (2) provided at both ends and a second component (5) with female fasteners (4) provided at both ends. The first component (3) and the second component (5) are spliced into the outer ring (1) through the male fasteners (2) and the female fasteners (4). A connecting block (6) is provided on the outer ring (1), and an inner ring (7) is connected to the outer ring (1) through the connecting block (6). The inner ring (7) is composed of two inner half-rings (8). Two or more tooth grooves (9) are provided on the inner ring (7) along its circumferential direction. Two or more positioning mechanisms for positioning the flange are provided on the outer ring (1) at equal intervals along its circumferential direction; The positioning mechanism includes a first gear (10) provided on the outer ring (1) and meshing with the tooth groove (9), a lead screw shaft (11) passing through the first gear (10) and threadedly connected to the first gear (10), a limit block (12) provided on the lead screw shaft (11), and a clamping block (13) provided on the outer ring (1) for limiting the position of the limit block (12); Two or more active telescopic rods (14) are provided on the outer ring (1) along its circumferential direction. Two or more arc-shaped pressing blocks (15) for pressing the active telescopic rods (14) are provided on the inner ring (7). A return spring for resetting is provided in the inner cavity of the active telescopic rod (14). Two or more first adjustment telescopic rods (16) are provided on the outer ring (1). A second adjustment telescopic rod (17) is provided on the first adjustment telescopic rod (16). A limit bolt (18) is provided on the second adjustment telescopic rod (17). An adjustment rod (19) with a cavity structure is provided on the limit bolt (18). Two or more ejector rods (23) are provided on the adjustment rod (19) along its circumferential direction. An air pipe is provided between the inner cavity of the adjustment rod (19) and the inner cavity of the active telescopic rod (14). The active telescopic rod (14) is used to supply air to the inner cavity of the adjustment rod (19).

2. The positioning tooling for the flange of a marine diesel engine base according to claim 1, wherein: A pressing strip (20) is provided at one end of the lead screw shaft (11) close to the center of the inner ring (7). The pressing strip (20) is parallel to the axis of the inner ring (7).

3. A positioning tooling for the flange of a marine diesel engine base according to claim 1, characterized in that: A second gear (21) meshing with the tooth groove (9) is provided on the outer ring (1). A crank (22) is provided on the second gear (21).

4. A positioning tooling for the flange of a marine diesel engine base according to claim 3, characterized in that: The second gear (21) is less than one-tenth of the diameter of the inner ring (7).

5. A method for positioning the flange of a marine diesel engine seat by using the positioning tooling for the flange of a marine diesel engine seat according to any one of claims 1-4, characterized in that, It includes the following steps: S1: Align the flange of the diesel engine base with the butt-jointed flange, and make the surfaces of the flange of the diesel engine base and the butt-jointed flange fit; S2: Put the outer ring (1) and the inner ring (7) on the outside of the base flange. Fix the outer ring (1) through the male fasteners (2) and the female fasteners (4). Rotate the inner ring (7) to drive the first gear (10) to rotate, thereby driving the axial movement of the lead screw shaft (11). Use the lead screw shaft (11) to squeeze the flange of the diesel engine base and the butt-jointed flange, so that the flange of the diesel engine base and the butt-jointed flange are successfully butted; S3: Remove the outer ring (1) and the inner ring (7) from the flange of the diesel engine base and the butt-jointed flange, and install the pin on the flange to complete the positioning of the flange.

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