A special tool for dismantling pile caps
By designing a specialized tool that includes a main body, auxiliary mechanism, fixing block, rotating handle and nut, the problems of time-consuming and laborious disassembly methods and damage to blind covers are solved, realizing efficient and low-cost disassembly of juniper blind covers and extending their service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA POWER CONSTR OFFSHORE ENG CONSTR CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional methods of disassembling blind covers are time-consuming and labor-intensive, easily damage the blind covers, and are difficult to operate in special environments, resulting in high maintenance costs and short lifespan.
Design a special tool that includes a main body, an auxiliary mechanism, a fixing block, a through hole, a rotating handle, and a rotating nut. Through the cooperation of the auxiliary mechanism and the fixing block, the rotating handle and nut are used to achieve efficient disassembly and installation of the unicorn blind cover.
It improves the service life of the union blind cover, reduces the risk of damage during disassembly and installation, adapts to various construction environments, and reduces costs.
Smart Images

Figure CN224451627U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of blind cover dismantling and assembly equipment, and in particular to a special tool for dismantling blind covers for pile driving. Background Technology
[0002] Piling operations are an indispensable part of wind power installation, especially in offshore wind power projects. As a crucial component of pile foundation construction, the piling system plays a vital role in the stability of the installation platform and the efficiency of construction. The disassembly and installation of blind covers are common operations in piling. However, traditional disassembly methods often present difficulties, especially without specialized tools. Disassembly may damage the blind cover itself, thus affecting its service life.
[0003] Specifically, traditional disassembly methods primarily rely on striking the protrusions of the blind cover with a sledgehammer to loosen it. However, this method is not only time-consuming and labor-intensive, but also causes varying degrees of damage to the blind cover during repeated impacts, potentially leading to deformation and making subsequent disassembly and installation more difficult. When the blind cover is struck with a sledgehammer, the protrusions of the blind cover on the pile driving equipment will suffer varying degrees of indentation and deformation, resulting in reduced sealing performance and even rendering the blind cover unusable. This not only increases maintenance costs but also significantly impacts the normal operation of the equipment.
[0004] In certain special circumstances, the difficulties in dismantling the junket cover are even more pronounced. For example, during ship-based pile driving operations, there may be limitations on the operating space on the hull, making the use of conventional tools insufficient for on-site needs. Similar problems were encountered on wind power installation platform vessels such as the Power Construction Zhiyuan, where the dismantling of the junket cover was exceptionally difficult due to the unique design of the ship's pile leg pile driving system.
[0005] According to the manufacturer's solution, while inertial impact tools can provide some assistance, they are expensive and have high requirements for the operating environment, failing to meet actual on-site needs. Furthermore, due to the repeated disassembly, installation, and use of blind covers, their wear rate is rapid, leading to a significant increase in maintenance costs. Therefore, designing an efficient, low-cost tool that can extend the service life of blind covers has become a major challenge in current technological development. Thus, this utility model relates to a special tool for disassembling blind covers using impact-type pile drivers. Utility Model Content
[0006] To address the aforementioned technical problems, this utility model discloses a special tool for dismantling a blind cover for pile driving, comprising a blind cover and a main body for dismantling the blind cover. The main body is provided with an auxiliary mechanism to facilitate the installation or dismantling of the blind cover. Multiple evenly distributed fixing blocks are fixedly installed on the blind cover. The auxiliary mechanism works in conjunction with the fixing blocks. The main body is made of 8mm steel plate.
[0007] Furthermore, the auxiliary mechanism includes multiple through holes, which are evenly distributed at the top of the main body, and each of the multiple through holes is used in conjunction with multiple fixing blocks.
[0008] Furthermore, the auxiliary mechanism also includes multiple rotating handles, which are fixedly installed on the outer arc surface of the main body and evenly distributed.
[0009] Furthermore, the auxiliary mechanism also includes a rotating nut, which is fixedly installed on the top of the main body and is concentrically arranged with the main body. The rotating nut is of model M45.
[0010] The advantages of this utility model compared with the prior art are: this utility model is simple to operate, low in cost, reduces the damage to the union blind cover during the disassembly process of traditional processes, improves the service life of the union blind cover, and improves the efficiency of disassembly and installation. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0012] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle.
[0013] Reference numerals: 1-Main body; 2-Rotating handle; 3-Rotating nut; 4-Through hole; 5-Union blind cover; 6-Fixing block. Detailed Implementation
[0014] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0015] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0017] Example: Figure 1 , Figure 2 As shown, a special tool for dismantling a blind cover for pile driving includes a blind cover 5 and a main body 1 for dismantling the blind cover 5. The main body 1 is provided with an auxiliary mechanism to facilitate the installation or dismantling of the blind cover 5. Multiple evenly distributed fixing blocks 6 are fixedly installed on the blind cover 5. The auxiliary mechanism works in conjunction with the fixing blocks 6. The main body 1 is made of 8mm steel plate. Through the above solution, the main body 1 works in conjunction with the blind cover 5 to avoid damage to the blind cover 5 during traditional dismantling and installation, increase its service life, meet the construction environment of any site, improve practicality, and reduce the use cost of traditional processes.
[0018] The auxiliary mechanism includes multiple through holes 4, which are evenly distributed on the top of the main body 1. The multiple through holes 4 are used in conjunction with multiple fixing blocks 6. Through the above scheme, the fixing blocks 6 and the through holes 4 cooperate to make the main body 1 rotate by driving the blind cover 5 to rotate through the fixing blocks 6, which facilitates the disassembly and installation of the blind cover 5.
[0019] The auxiliary mechanism also includes multiple rotating handles 2, which are fixedly installed on the outer arc surface of the main body 1 and evenly distributed. With the above scheme, after the through hole 4 and the fixing block 6 are connected, the blind cover 5 can be easily locked or disassembled by tapping the rotating handle 2.
[0020] The auxiliary mechanism also includes a rotating nut 3, which is fixedly installed on the top of the main body 1 and is concentric with the main body 1. The rotating nut 3 is of model M45. Through the above scheme, after tapping the rotating handle 2, the blind cover 5 becomes loose, and then the operator uses a wrench to turn the rotating nut 3, further improving the disassembly efficiency.
[0021] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.
Claims
1. A tool for removing a blind cover from a pile, characterized in that: It includes a blind cover (5) and a main body (1) for disassembling the blind cover (5). The main body (1) is provided with an auxiliary mechanism to facilitate the installation or disassembly of the blind cover (5). Multiple evenly distributed fixing blocks (6) are fixedly installed on the blind cover (5). The auxiliary mechanism works in conjunction with the fixing blocks (6). The main body (1) is made of 8mm steel plate.
2. A tool for removing a blind cap from a pile according to claim 1, characterized in that: The auxiliary mechanism includes multiple through holes (4), which are evenly distributed on the top of the main body (1). The multiple through holes (4) are used in conjunction with multiple fixing blocks (6).
3. A tool for removing a blind cap from a pile according to claim 2, wherein: The auxiliary mechanism also includes multiple rotating handles (2), which are fixedly installed on the outer arc surface of the main body (1) and evenly distributed.
4. A tool for removing a blind cap from a pile according to claim 3, wherein: The auxiliary mechanism also includes a rotating nut (3), which is fixedly installed on the top of the main body (1) and is concentrically arranged with the main body (1). The rotating nut (3) is of model M45.