A steel pipe protector dismounting device
By designing a combined structure of a limiting part and a prying part, the steel pipe protector can be quickly disassembled using the lever principle, solving the problems of cumbersome operation and high risk in the existing technology, and achieving a safe and efficient disassembly effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI HILONG ANTI CORROSION TECH ENG
- Filing Date
- 2025-09-08
- Publication Date
- 2026-08-04
AI Technical Summary
In the existing technology, the disassembly method of steel pipe protector is cumbersome, has a high risk factor, and is inefficient, often leading to safety risks and damage to the steel pipe.
A steel pipe protector disassembly device was designed, which adopts a combination structure of a limiting part and a prying part. Utilizing the lever principle, the locking part of the steel pipe protector is unlocked by prying with a pry head, so as to achieve rapid disassembly.
It enables single-person rapid disassembly of steel pipe protectors, reducing safety risks and the possibility of steel pipe damage, improving disassembly efficiency and safety, and reducing labor costs.
Smart Images

Figure CN224587960U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel pipe dismantling, and in particular to a steel pipe protector dismantling device. Background Technology
[0002] In oil and gas pipeline projects, to better protect steel pipes during transportation and various production stages and to prevent damage to the pipe bevels, steel pipe suppliers install pipe end protectors. The types of protectors vary depending on customer requirements and the usage environment, but they are typically either screw-fixed or pin-fixed, with most overseas manufacturers using pin-fixed types. Therefore, the conventional disassembly method for screw-fixed protectors is using a wrench, while pin-fixed protectors are often disassembled by hammering or cutting. These methods are cumbersome, risky, and frequently result in personnel injury from hammering and damage to the steel pipes, consuming significant manpower and resources while being inefficient. Utility Model Content
[0003] The purpose of this invention is to overcome the problems of cumbersome operation and high risk associated with traditional methods of disassembling steel pipe protective sleeves using wrenches, hammers, etc., and to provide a steel pipe protector disassembly device. The device can be fixed to the opening of the steel pipe protector by a limiting part, and the prying part uses the fulcrum as a support point and employs the lever principle, using a pry head to pry open the locking piece of the steel pipe protector opening, achieving rapid disassembly.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A steel pipe protector disassembly device includes a limiting part, a fulcrum part, and a prying part. The limiting part comprises a first L-shaped bracket with a first upper support and a first lower support, and a second L-shaped bracket with a second upper support and a second lower support, symmetrically arranged. A first limiting element and a second limiting element are provided on the first and second upper supports. The first lower support and the first limiting element form a first limiting groove, and the second lower support and the second limiting element form a second limiting groove. The fulcrum part is located between the first and second upper supports. The prying part penetrates the fulcrum part and is movable vertically.
[0005] Preferably, the fulcrum is a first connecting rod that is rotatably mounted on the first upper bracket and the second upper bracket, and a through hole is provided on the first connecting rod for the prying part to pass through. Preferably, the fulcrum is a first connecting rod that is rotatably mounted on the first upper bracket and the second upper bracket, and a first sleeve for the prying part to pass through is provided on the first connecting rod; Preferably, the fulcrum portion includes a first connecting rod disposed on the first upper bracket and the second upper bracket, and a second sleeve for the prying portion to pass through is rotatably disposed in the middle of the first connecting rod; Preferably, the fulcrum portion includes a first connecting rod disposed on the first upper bracket and the second upper bracket, a third sleeve rotatably sleeved on the middle of the first connecting rod, and connected to a fourth sleeve through which a prying portion is sleeved. Preferably, the prying part is a pry bar with a pry head.
[0006] Preferably, the first limiting member and the second limiting member are horizontal bars, which are parallel to the first lower support and the second lower support, respectively; or, the first limiting member and the second limiting member are triangular members, with one side of the triangular member being parallel to the first lower support and the second lower support, respectively; or, the first limiting member and the second limiting member are rectangular members, with one side of the rectangular member being parallel to the first lower support and the second lower support, respectively. Preferably, the first upper bracket and the second upper bracket are further provided with a second connecting rod.
[0007] The advantages of this invention compared to the prior art after adopting the above structure are: 1. This utility model has a simple structure and can be quickly disassembled by a single person, thus reducing labor costs.
[0008] 2. This utility model adopts the lever principle, using the fulcrum as the fulcrum, and uses a pry bar to pry open the connecting parts of the steel pipe end protector, which is easy, convenient and very safe.
[0009] 3. This utility model uses the pry head of a pry bar to unlock the locking part of the steel pipe protector, which will not cause any destructive operation to the end of the steel pipe, greatly reducing the risk of damage to the steel pipe. Moreover, after the locking part is broken, the steel pipe protector is not damaged, and the steel pipe protector can be reused by configuring a new locking part. Attached Figure Description
[0010] Figure 1 This is a structural diagram of the steel pipe protector of this utility model.
[0011] Figure 2 This is a three-dimensional structural diagram of the steel pipe protector disassembly device of this utility model.
[0012] Figure 3 This is a partial three-dimensional structural diagram of the fulcrum part in the steel pipe protector disassembly device of this utility model.
[0013] Figure 4 This is a partial three-dimensional structural diagram of the fulcrum part in the steel pipe protector disassembly device of this utility model.
[0014] Figure 5 This is a partial three-dimensional structural diagram of the fulcrum part in the steel pipe protector disassembly device of this utility model.
[0015] Figure 6 This is a partial three-dimensional structural diagram of the fulcrum part in the steel pipe protector disassembly device of this utility model.
[0016] In the diagram: Limiting part—1; First upper bracket—1-1; First lower bracket—1-2; First L-shaped bracket—1-3; Second upper bracket—1-4; Second lower bracket—1-5; Second L-shaped bracket—1-6; First limiting component—1-7; Second limiting component—1-8; First limiting groove—1-9; Second limiting groove—1-10; Support point—2; First connecting rod—2-1; First sleeve—2-2; Second sleeve—2-3; Third sleeve—2-4; Fourth sleeve—2-5; Second connecting rod—2-6; Prying part—3; Pry bar—3-1; Pry head—3-2; Steel pipe protector—4; Steel pipe protector locking component—4-1; Steel pipe body—4-2 Detailed Implementation
[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described one by one here, but the implementation of the present invention is not limited to the following embodiments.
[0018] Please see Figure 1 , Figure 2 As shown in the figure, this utility model discloses a steel pipe protector disassembly device. It includes a limiting part 1, a fulcrum part 2, and a prying part 3. The limiting part 1 is characterized by: the limiting part 1 consisting of a first L-shaped bracket 1-3 with a first upper bracket 1-1 and a first lower bracket 1-2, and a second L-shaped bracket 1-6 with a second upper bracket 1-4 and a second lower bracket 1-5, symmetrically arranged; a first limiting member 1-7 and a second limiting member 1-8 are provided on the first upper bracket 1-1 and the second upper bracket 1-4; the first lower bracket 1-2 and the first limiting member 1-7 form a first limiting groove 1-9; and the second lower bracket 1-5 and the second limiting member 1-8 form a second limiting groove 1-10; the fulcrum part 2 is located between the first upper bracket 1-1 and the second upper bracket 1-4; and the prying part 3 penetrates the fulcrum part 2 and can move up and down. Based on the above configuration, the main purpose of the limiting part is to fix the device to the end of the steel pipe protector 4. The end of the steel pipe with the steel pipe protector 4 installed is inserted into the first limiting groove 1-9 formed by the first lower bracket 1-2 and the first limiting member 1-7, and into the second limiting groove 1-10 formed by the first lower bracket 1-5 and the first limiting member 1-6. This ensures the stable installation of the device. Simultaneously, the prying part, using the fulcrum as a support point and employing the lever principle, breaks the locking member 4-1 of the steel pipe protector, achieving rapid disassembly. Furthermore, the prying part 3 penetrates the fulcrum 2 and can move up and down. This allows the device to be better suited for steel pipes with different openings, and allows for more flexible adjustment of the angle and position of the prying part 3, better utilizing the lever force.
[0019] like Figure 2 , 3 As shown in Figures 4, 5, and 6, in this utility model, the fulcrum 2 is a first connecting rod 2-1 rotatably mounted on the first upper bracket 1-1 and the second upper bracket 1-4, and a through hole for the prying part 3 to pass through is provided on the first connecting rod 2-1; or, preferably, a first sleeve 2-2 for the prying part 3 to pass through is provided on the first connecting rod 2-1; or, preferably, a second sleeve 2-3 for the prying part 3 to pass through is rotatably mounted in the middle of the first connecting rod 2-1; or, preferably, a third sleeve 2-4 is rotatably mounted in the middle of the first connecting rod 2-1 and connected to a fourth sleeve 2-5 through which the prying part 3 is mounted. Based on the above settings, the purpose is to enable the prying part 3 to rotate flexibly based on the first connecting rod 2-1. In addition, the prying part 3 passes through and is connected to the first connecting rod 2-1, which facilitates better adjustment of the angle and position relationship between the prying part 3 and the fulcrum part 2, and better exerts the fulcrum role of the fulcrum part in the lever action, so that the prying part 3 can better break the locking part 4-1 of the steel pipe protector.
[0020] like Figure 2 As shown, in this utility model, the prying part 3 is a pry bar 3-1 with a pry head 3-2. Based on the above design, sharpening the pry head 3-2 of the pry bar 3-1 can better break the locking part 4-1 of the steel pipe protector.
[0021] like Figure 2 As shown, the first limiting member 1-7 and the second limiting member 1-8 are horizontal bars, which are parallel to the first lower support 1-2 and the second lower support 1-5, respectively; or the first limiting member 1-7 and the second limiting member 1-8 are triangular members, with one side of the triangular member parallel to the first lower support 1-2 and the second lower support 1-5, respectively; or the first limiting member 1-7 and the second limiting member 1-8 are rectangular members, with one side of the rectangular member parallel to the first lower support 1-2 and the second lower support 1-5, respectively. Based on the above design, using horizontal bars is more convenient. In this embodiment, triangular members are used because their supporting force is more stable, which makes the limiting part 1 more stable when limiting; the same applies to rectangular members.
[0022] like Figure 2 As shown, a second connecting rod 2-6 is also provided between the first upper bracket 1-1 and the second upper bracket 1-4. Based on the above design, the second connecting rod can further ensure the stability and firmness of the limiting part 1.
[0023] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.
Claims
1. A steel pipe protector disassembly device, comprising a limiting part (1), a fulcrum part (2), and a prying part (3), characterized in that: The limiting part (1) is composed of a first L-shaped bracket (1-3) having a first upper bracket (1-1) and a first lower bracket (1-2) and a second L-shaped bracket (1-6) having a second upper bracket (1-4) and a second lower bracket (1-5) arranged symmetrically. A first limiting member (1-7) and a second limiting member (1-8) are provided on the first upper bracket (1-1) and the second upper bracket (1-4). The first lower bracket (1-2) and the first limiting member (1-7) form a first limiting groove (1-9), and the second lower bracket (1-5) and the second limiting member (1-8) form a second limiting groove (1-10). The fulcrum part (2) is located between the first upper bracket (1-1) and the second upper bracket (1-4). The prying part (3) passes through the fulcrum part (2) and can move up and down.
2. A steel pipe protector dismounting device according to claim 1, characterized in that: The fulcrum (2) is a first connecting rod (2-1) that is rotatably mounted on the first upper bracket (1-1) and the second upper bracket (1-4). A through hole is provided on the first connecting rod (2-1) for the prying part (3) to pass through.
3. A steel pipe protector dismounting device according to claim 1, characterized in that: The fulcrum (2) is a first connecting rod (2-1) that is rotatably mounted on the first upper bracket (1-1) and the second upper bracket (1-4). A first sleeve (2-2) is provided on the first connecting rod (2-1) for the prying part (3) to pass through.
4. A steel pipe protector dismounting device according to claim 1, characterized in that: The fulcrum (2) includes a first connecting rod (2-1) disposed on the first upper bracket (1-1) and the second upper bracket (1-4), and a second sleeve (2-3) for the prying part (3) to pass through is rotatably disposed in the middle of the first connecting rod (2-1).
5. A steel pipe protector dismounting device according to claim 1, characterized in that: The fulcrum (2) includes a first connecting rod (2-1) disposed on the first upper bracket (1-1) and the second upper bracket (1-4), a third sleeve (2-4) is rotatably sleeved on the middle of the first connecting rod (2-1), and connected to a fourth sleeve (2-5) through which the prying part (3) is sleeved.
6. The steel pipe protector dismounting device according to claim 1, characterized in that: The prying part (3) is a pry bar (3-1) with a pry head (3-2).
7. The steel pipe protector dismounting device according to claim 1, characterized in that: The first limiting member (1-7) and the second limiting member (1-8) are horizontal bars, which are parallel to the first lower support (1-2) and the second lower support (1-5), respectively. or The first limiting member (1-7) and the second limiting member (1-8) are triangular members, and one side of the triangular member is parallel to the first lower bracket (1-2) and the second lower bracket (1-5), respectively. or The first limiting member (1-7) and the second limiting member (1-8) are rectangular members, and one side of the rectangular member is parallel to the first lower bracket (1-2) and the second lower bracket (1-5), respectively.
8. A steel pipe protector removal device according to any one of claims 2-7, characterized in that: The first upper bracket (1-1) and the second upper bracket (1-4) are also provided with a second connecting rod (2-6).