Guiding protection device for removing bolts of ship shafting

Abstract

The utility model relates to the technical field of ship parts, in particular to a ship shafting bolt removal guiding protection device which comprises an end base installed at the end of a bolt, a threaded part is arranged in the end base, a plurality of sets of fixing columns are fixedly installed on one side of the end base, the other ends of the fixing columns are in threaded connection with fastening bolts, and the fastening bolts are fixed to the end base. The exteriors of the multiple sets of fixing columns are sequentially sleeved with a second guide plate and a first guide plate, and guide holes are formed in the center of the second guide plate and the center of the first guide plate. When the tool is used, the oxygen melting rod firstly penetrates through the guide hole in the guide plate, after the end of the oxygen melting rod is close to the end of a bolt needing to be dismounted, the oxygen melting rod is ignited and pushed towards the center of the bolt, and the amplitude of the up-down and left-right coordinated action of the oxygen melting rod in the pushing process is restrained by the second guide plate and the first guide plate on the tool to be within a certain range around the center all the time. And the problem that the ship shaft flange body is damaged by the oxygen melting rod due to improper manual operation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ship parts, in particular to a ship shafting bolt removal guide protection device. Background Art

[0002] In large-scale ship shafting projects, the problem of interference-fitted shaft flange bolts being unable to be removed normally often occurs. The current solution is to drill out the bolts by machining or to use an oxygen-melting rod to hot-melt the bolts. During the hot-melting process of removing the bolts by an oxygen-melting rod, a guide protection device is required to assist.

[0003] In the prior art, the patent with publication number CN212287454U discloses an expansion bolt removal device, including a first tapper, the first tapper including a first body and a first tapping head, the first tapping head is connected to the first body, the inner surface of the first tapping head is provided with an internal thread matching the expansion bolt, and the outer surface of the first tapping head is provided with a first thread; a second tapper, including a second body and a second tapping head, the second tapping head is connected to the second body, and the outer surface of the second tapping head is provided with a second thread.

[0004] The above structure is dismantled using a tapping head. However, during the heat treatment process, the tapping head is inefficient and needs to be removed by hot melting. However, during the removal process, the oxygen melt rod cannot operate around the center of the removed bolt, and improper manual operation may easily cause the oxygen melt rod to damage the ship shaft flange body. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to propose a guide protection device for removing ship shaft bolts to solve the problem that the oxygen melt rod cannot operate around the center of the removed bolt during the removal process, and the oxygen melt rod is easily damaged by improper manual operation.

[0006] Based on the above purpose, the utility model provides a guide protection device for removing bolts of a ship shaft system, comprising an end seat mounted on the end of a bolt, a threaded portion being formed inside the end seat, and multiple sets of fixing columns being fixedly mounted on one side of the end seat, and a fastening bolt being threadedly connected to the other end of the fixing column;

[0007] The outer parts of the plurality of groups of the fixing columns are sleeved with a second guide plate and a first guide plate in sequence, and a guide hole is provided at the center of the second guide plate and the first guide plate.

[0008] Preferably, at least three groups of the fixing columns are provided, and the fixing columns are of a telescopic structure.

[0009] Preferably, the fixed column includes a bottom column fixedly mounted on one side of the end seat, a top column is mounted on one side of the bottom column, and the bottom column and the top column are formed by welding.

[0010] Preferably, the radius of the bottom column is smaller than the radius of the top column, and the second guide plate is arranged at the connection between the bottom column and the top column.

[0011] Preferably, the guide plate 2, the guide plate 1 and the end seat are arranged parallel to each other, and the guide plate 2 and the guide plate 1 are components of the same size.

[0012] Preferably, the end seat is a T-shaped structure, and the end seat is an alloy component.

[0013] Beneficial effects of the utility model:

[0014] When in use, first pass the oxygen melt rod through the guide holes in the guide plate 2 and the guide plate 1. After the end is close to the end of the bolt to be removed, ignite the oxygen melt rod and push it towards the center of the bolt. During the pushing process, the amplitude of the coordinated movement of the oxygen melt rod up and down and left and right will always be within a certain range around the center due to the constraints of the guide plates 2 and 1 on the tooling, and the problem of the oxygen melt rod damaging the ship shaft flange body due to improper manual operation will not be caused. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 A schematic diagram of a half-section structure of the utility model as a whole;

[0018] Figure 3 This is a schematic diagram of the connection structure between the utility model and the ship shaft flange.

[0019] The markings in the figure are: 1. end seat; 2. Guide plate 1; 3. Guide plate 2; 4. Fixing column; 5. Guide hole; 6. Fastening bolt; 7. Bottom column; 8. Top column; 9. Threaded part; 10. Axle flange. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0021] like Figure 1 、 Figure 2 and Figure 3As shown, a guide protection device for removing bolts from a ship shaft system includes an end seat 1 mounted on the end of a bolt, a threaded portion 9 is formed inside the end seat 1, and multiple sets of fixing columns 4 are fixedly mounted on one side of the end seat 1, and the other end of the fixing column 4 is threadedly connected to a fastening bolt 6;

[0022] The outer parts of the multiple groups of fixing columns 4 are sequentially sleeved with the guide plate 2 3 and the guide plate 1 2 . The centers of the guide plate 2 3 and the guide plate 1 2 are both provided with guide holes 5 .

[0023] In this embodiment, when in use, the oxygen melt rod is first passed through the guide holes 5 in the guide plates 2 3 and 1 2, and after the end is close to the end of the bolt to be removed, the oxygen melt rod is ignited and pushed toward the center of the bolt. During the pushing process, the amplitude of the coordinated movement of the oxygen melt rod up and down and left and right will always be within a certain range around the center due to the constraints of the guide plates 2 3 and 1 2 on the tooling, and the problem of the oxygen melt rod damaging the ship shaft flange body due to improper manual operation will not be caused.

[0024] As an implementation method, Figure 1 、 Figure 2 As shown, at least three groups of fixing columns 4 are provided, and the fixing columns 4 are a telescopic structure.

[0025] In this embodiment, the stability of the guide plate 2 3 and the guide plate 1 2 is improved by using multiple groups of fixing columns 4, and the retractable structure of the fixing columns 4 is adapted to hot melting of oxygen melting rods of different lengths.

[0026] As an implementation method, Figure 1 、 Figure 2 As shown, the fixed column 4 includes a bottom column 7 fixedly mounted on one side of the end seat 1, a top column 8 is mounted on one side of the bottom column 7, and the bottom column 7 and the top column 8 are welded together.

[0027] In this embodiment, since the fixed column 4 is composed of a bottom column 7 and a top column 8, before use, the guide plate 2 3 and the guide plate 1 2 are first installed between the bottom column 7 and the top column 8, and one side of the guide plate 1 2 is fixed by a fastening bolt 6 to ensure that the guide holes 5 in the guide plates 2 3 and the guide plates 1 2 are concentric, and the end seat 1 is aligned with the end of the ship shaft flange 10 where the bolts need to be removed.

[0028] As an implementation method, Figure 2 As shown, the radius of the bottom column 7 is smaller than the radius of the top column 8, and the guide plate 2 3 is arranged at the connection between the bottom column 7 and the top column 8.

[0029] In this embodiment, guide plate 2 3 and guide plate 1 2 are installed between the bottom column 7 and the top column 8, and one side of guide plate 1 2 is fixed by a fastening bolt 6 to ensure that the guide holes 5 in guide plate 2 3 and guide plate 1 2 are concentric, and the end seat 1 is aligned with the end of the bolt to be removed of the ship shaft flange 10 to avoid cutting the flange hole of the shaft due to improper operation.

[0030] As an implementation method, Figure 1 、 Figure 2 As shown, the guide plate 2 3, the guide plate 1 2 and the end seat 1 are arranged parallel to each other, and the guide plate 2 3 and the guide plate 1 2 are components of the same size.

[0031] In this embodiment, the guide plate 2 3, the guide plate 1 2 and the end seat 1 are parallel to each other, so that the oxygen melting rod is constrained by the guide plate 2 3 and the guide plate 1 2 on the tooling and will always be within a certain range around the center.

[0032] Among them, the end seat 1 is a T-shaped structure, and the end seat 1 is an alloy component. When the end is close to the end of the bolt to be removed, the oxygen melt rod is ignited and pushed toward the center of the bolt to complete the entire operation inside the end seat 1.

[0033] Working Principle: Before use, first install guide plate 2 3 and guide plate 1 2 between the bottom column 7 and the top column 8. Secure one side of guide plate 1 2 with the fastening bolt 6. Ensure that the guide holes 5 in guide plate 2 3 and guide plate 1 2 are concentric. Align the end seat 1 with the end of the bolt to be removed on the ship shaft flange 10.

[0034] When in use, the oxygen melt rod is first passed through the guide plate 2 3 and the guide plate 1 2. After the end is close to the end of the bolt to be removed, the oxygen melt rod is ignited and pushed into the center of the bolt. During the pushing process, the amplitude of the coordinated movement of the oxygen melt rod up and down and left and right will always be within a certain range around the center due to the constraints of the guide plates 2 3 and the guide plates 1 2 on the tooling, and the problem of the oxygen melt rod damaging the ship shaft flange body due to improper manual operation will not be caused.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0036] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A ship shaft bolt removal guide protection device, comprising an end seat (1) mounted on the end of the bolt, characterized in that: A threaded portion (9) is provided inside the end seat (1), and a plurality of sets of fixing columns (4) are fixedly mounted on one side of the end seat (1), and the other ends of the fixing columns (4) are threadedly connected to fastening bolts (6); The exteriors of the plurality of groups of fixed columns (4) are sleeved with guide plates 2 (3) and guide plates 1 (2) in sequence, and guide holes (5) are provided at the centers of the guide plates 2 (3) and guide plates 1 (2).

2. A ship shafting bolt removal guide protection device according to claim 1, characterized in that: At least three groups of the fixed columns (4) are provided, and the fixed columns (4) are of a telescopic structure.

3. A ship shafting bolt removal guide protection device according to claim 1, characterized in that: The fixed column (4) comprises a bottom column (7) fixedly mounted on one side of the end seat (1), a top column (8) being mounted on one side of the bottom column (7), and the bottom column (7) and the top column (8) are formed by welding.

4. A ship shafting bolt removal guide protection device according to claim 3, characterized in that: The radius of the bottom column (7) is smaller than the radius of the top column (8), and the second guide plate (3) is arranged at the connection between the bottom column (7) and the top column (8).

5. A ship shafting bolt removal guide protection device according to claim 1, characterized in that: The guide plate 2 (3), the guide plate 1 (2) and the end seat (1) are arranged parallel to each other, and the guide plate 2 (3) and the guide plate 1 (2) are components of the same size.

6. A ship shafting bolt removal guide protection device according to claim 1, characterized in that: The end seat (1) is a T-shaped structure, and the end seat (1) is an alloy component.

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