A safety latch tool for LNG secondary shield preparation
By designing a safety pin fixture for the cutter used in the preparation of LNG secondary shielding layers, the safety risk of the cutter falling is solved by using a cylindrical structure and a safety pin to fix the position of the cutter, thus improving both safety and ease of operation.
Patent Information
- Authority / Receiving Office
- CN ยท China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YOKE TECH
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-14
AI Technical Summary
When the trimming machine is cutting the LNG secondary shielding layer, there is a safety risk due to the falling of the cutting blade. It is necessary to prevent the cutting blade from falling accidentally to protect the safety of the operators.
A safety pin fixture for a cutter used in the preparation of LNG secondary shielding layers is designed. It adopts an integrally molded cylindrical structure, including a frustum, a first cylinder, and a second cylinder. The cutter is fixed in position by drilling holes at corresponding positions on the frame body and the cutter body and inserting safety pins to prevent the cutter from falling accidentally.
It effectively prevents the cutting blade from falling accidentally, improves the safety factor of the operation, protects the safety of the operators, and is simple and quick to operate and convenient to use and maintain.
Smart Images

Figure CN224489353U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of safety pin tooling technology, and more specifically to a cutting safety pin tooling for the preparation of LNG secondary shielding layers. Background Technology
[0002] Currently, when the cutting machine needs to repair the cutting blade or clean the cutting blade after production is completed when cutting RSB (LNG rigid secondary shield), the equipment is manually stopped and a safety pad is placed on it, which poses a safety risk of the cutting blade falling.
[0003] Therefore, how to prevent the cutting blade from falling is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0004] This utility model aims to at least partially solve one of the aforementioned technical problems in the prior art.
[0005] Therefore, one objective of this utility model is to provide a cutting safety pin tooling for the preparation of LNG secondary shielding layer, which is an integrally formed cylindrical body with a frustum at the front end, a first cylinder in the middle, and a second cylinder at the rear end.
[0006] The diameter of the lower base of the frustum is the same as the diameter of the first cylinder, but smaller than the diameter of the second cylinder.
[0007] Furthermore, the radius of the upper base of the aforementioned frustum is 3mm.
[0008] Furthermore, the radius of the lower base of the aforementioned frustum and the radius of the first cylinder are both 10 mm.
[0009] Furthermore, the radius of the second cylinder is 15mm.
[0010] Furthermore, the height of the aforementioned frustum is less than the height of the second cylinder.
[0011] Furthermore, the height of the second cylinder is less than the height of the first cylinder.
[0012] Furthermore, the sum of the heights of the first cylinder and the second cylinder is 150mm.
[0013] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a cutting knife safety pin fixture for the preparation of LNG secondary shielding layer. By drilling holes at corresponding positions on the frame body and the cutting knife body, and inserting safety pins, the cutting knife position is fixed to prevent the cutting knife from falling unexpectedly. This solves the safety risk of personnel injury from sudden cutting knife falling, improves the safety factor of operation, effectively protects the safety of operators, and is simple and quick to operate, safe to use and convenient to maintain. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the cutting safety pin tooling for the preparation of LNG secondary shielding layer provided by this utility model.
[0016] Among them, 1-frustum, 2-first cylinder, 3-second cylinder, 4-frame body. Detailed Implementation
[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0022] Example 1
[0023] Safety pin tooling for cutting cutters used in the preparation of LNG secondary shielding layers, such as Figure 1 As shown, it is a one-piece cylindrical object with a frustum 1 at the front end, a first cylinder 2 in the middle, and a second cylinder 3 at the rear end.
[0024] The upper base radius of the frustum 1 is 3mm, the lower base radius is 10mm, and its height is less than the height of the second cylinder 3.
[0025] The radius of the first cylinder 2 is 10mm, and the sum of the heights of the second cylinder 3 is 150mm.
[0026] The radius of the second cylinder 3 is 15mm, and its height is less than that of the first cylinder 2.
[0027] Example 2
[0028] The method of using the cutter safety pin fixture for LNG secondary shielding layer preparation in Example 1 involves drilling a hole (11mm radius) in the corresponding position of the frame body 4 of the trimming machine and the cutter body. When the cutter needs to be inspected or cleaned after production, the cutter safety pin fixture is inserted into the hole in the frame body 4 to fix the cutter position and prevent the cutter from falling suddenly and accidentally. This solves the safety risk of the cutter falling suddenly and injuring personnel, improves the safety factor of operation, effectively protects the safety of operators, and is simple and quick to operate, safe to use and convenient to maintain.
[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.
[0030] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A cutting tool and safety pin fixture for preparing LNG secondary shielding layers, characterized in that, It is a one-piece cylindrical object with a frustum at the front, a first cylinder in the middle, and a second cylinder at the rear. The diameter of the lower base of the frustum is the same as the diameter of the first cylinder, but smaller than the diameter of the second cylinder.
2. The cutting safety pin tooling for LNG secondary shielding layer preparation according to claim 1, characterized in that, The radius of the upper base of the frustum is 3mm.
3. The cutting safety pin tooling for LNG secondary shielding layer preparation according to claim 2, characterized in that, The radius of the lower base of the frustum and the radius of the first cylinder are both 10 mm.
4. The cutting safety pin tooling for LNG secondary shielding layer preparation according to claim 3, characterized in that, The radius of the second cylinder is 15mm.
5. A cutting safety pin fixture for preparing LNG secondary shielding layers according to claim 1, characterized in that, The height of the frustum is less than the height of the second cylinder.
6. A cutting safety pin fixture for preparing LNG secondary shielding layers according to claim 5, characterized in that, The height of the second cylinder is less than the height of the first cylinder.
7. A cutting safety pin fixture for preparing LNG secondary shielding layers according to claim 6, characterized in that, The sum of the height of the first cylinder and the height of the second cylinder is 150mm.