Oil pipe pulling device

Abstract

The utility model relates to the field of pipe body pulling devices, and discloses an oil pipe pulling device. The lifting device comprises a lifting rod, a clamping block and a lifting hammer, the clamping block is located at the bottom end of the lifting rod, the clamping block is suitable for being arranged on the metal oil pipe in a sleeving mode, the clamping block is in threaded connection with a hand-screwing bolt, and the end of the hand-screwing bolt is suitable for abutting against the outer wall of the metal oil pipe so as to clamp the metal oil pipe; the lifting hammer is a cylinder and slidably arranged on the lifting rod in a sleeving mode, a blocking ring is fixedly arranged at the top of the lifting rod, the outer diameter of the blocking ring is larger than that of the lifting rod, and the lifting hammer is suitable for being held by a user and colliding with the blocking ring so as to apply pulling-out force to the metal oil pipe. When the metal oil pipe is pulled out, operation is easy and convenient; labor is saved; the application range is wide; and the stability is high after the metal oil pipe is clamped by the hand-screwing bolt.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe extraction devices, and more specifically, to an oil pipe extraction device. Background Technology

[0002] In existing hydraulic systems, components typically have a metal oil pipe interference-fitted for connection to a hose. During assembly, due to worker error, some substandard metal oil pipes may be installed on these components, affecting the entire hydraulic system. Therefore, in subsequent inspection processes, components with substandard metal oil pipes are identified, and the pipes are removed and replaced with qualified ones. In related technologies, pliers are usually used to disassemble the metal oil pipes. During disassembly, the worker needs to press down on the component with one hand while using the other hand to apply an outward pulling force to the metal oil pipe; simultaneously, the pliers are used to repeatedly shake the metal oil pipe to loosen it, allowing it to be pulled out. However, when using pliers to remove the metal oil pipe, the operator's hand is in a semi-open position, making it difficult to apply force and causing soreness in the palm and forefinger area. Utility Model Content

[0003] To address at least one of the aforementioned problems, this utility model provides an oil pipe extraction device, comprising a lifting rod, a clamping block, and a lifting hammer. The clamping block is located at the bottom end of the lifting rod and is adapted to be sleeved on a metal oil pipe. A hand-tightening bolt is threaded onto the clamping block, and the end of the hand-tightening bolt is adapted to abut against the outer wall of the metal oil pipe to clamp it. The lifting hammer is cylindrical and slidably sleeved on the lifting rod. A blocking ring is fixedly provided at the top of the lifting rod, and the outer diameter of the blocking ring is larger than the outer diameter of the lifting rod. The lifting hammer is adapted for a user to hold and strike the blocking ring to apply a pulling force to the metal oil pipe.

[0004] Optionally, the clamping block has a slot for inserting a metal oil pipe at one end away from the blocking ring. The slot wall has a bolt hole that passes through the clamping block. The hand-tightening bolt is inserted into the bolt hole and threadedly connected to the clamping block.

[0005] Optionally, a plug-in post is fixedly installed at the bottom end of the lifting rod. The outer diameter of the plug-in post is smaller than the outer diameter of the lifting rod. A threaded hole is opened at the bottom of the slot. A threaded section is provided on the plug-in post. The threaded section on the plug-in post is inserted into the threaded hole and threadedly connected to the clamping block.

[0006] Optionally, the plug extends into the slot, and the plug located in the slot is adapted to be inserted into a metal oil pipe.

[0007] Optionally, the outer surface of the lifting hammer is knurled.

[0008] Optionally, a silicone pad is fitted on the side of the lifting hammer near the blocking ring, and the outer diameter of the silicone pad is larger than the outer diameter of the lifting hammer.

[0009] Optionally, the hand-tightening bolt has multiple locking slots circumferentially, and a metal locking strip is inserted into the clamping block. The metal locking strip is adapted to be inserted into any of the locking slots to lock the rotation of the hand-tightening bolt.

[0010] Optionally, the outer wall of the clamping block is provided with an insertion groove, the side of the insertion groove near the lifting hammer passes through the clamping block, the insertion groove communicates with the locking groove, the metal locking strip is inserted into the insertion groove, and the end of the metal locking strip near the hand-tightening bolt is inserted into the corresponding locking groove.

[0011] Optionally, the metal locking bar protrudes from the insertion slot on the side near the lifting hammer.

[0012] Optionally, a groove is formed on the wall of the insertion slot, and a magnetic block is glued and fixed in the groove. The magnetic block is suitable for adsorbing the metal locking strip.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0014] After the clamping block is fitted onto the metal oil pipe, the metal oil pipe can be clamped by hand-tightening the bolt. At this time, you only need to hold the lifting hammer and make the lifting hammer impact the blocking ring, which can then apply a pulling force to the metal oil pipe. Depending on the magnitude of the force applied to the lifting hammer to impact the blocking ring, the blocking ring can be impacted repeatedly until the metal oil pipe is pulled out. The operation is simple and convenient.

[0015] The lifting hammer is cylindrical, making it easier for the operator to hold and apply force to drive it to move and impact the blocking ring. During the removal of the metal oil pipe, the lifting hammer only needs to be driven to repeatedly impact the blocking ring. Each impact of the lifting hammer on the blocking ring will loosen the metal oil pipe to a certain extent, so no great force is required, making it more labor-saving.

[0016] By adjusting the hand-tightening bolt to clamp the metal oil pipe, the extraction device can be adapted to extract oil pipes of various outer diameters, making it widely applicable.

[0017] After the hand-tightening bolt clamps the metal oil pipe, the metal locking strip is inserted into the corresponding locking groove, making it difficult for the hand-tightening bolt to loosen during the impact of the lifting hammer on the blocking ring. In addition, after the metal locking strip is inserted into the locking groove, the magnetic block can attract the metal locking strip, making it difficult for the metal locking strip to come out of the locking groove due to vibration, thus improving the stability of the hand-tightening bolt after clamping the metal oil pipe. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the oil pipe extraction device in Embodiment 1 of this utility model;

[0019] Figure 2 This is a cross-sectional view of the oil pipe pulling device in Embodiment 1 of this utility model;

[0020] Figure 3 This is a structural diagram of the oil pipe extraction device in Embodiment 2 of this utility model;

[0021] Figure 4 This is an exploded view of the clamping block, hand-tightening bolt, and metal locking strip in Embodiment 2 of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Lifting rod; 11. Blocking ring; 12. Insertion post; 2. Clamping block; 21. Slot; 22. Threaded hole; 23. Metal locking strip; 24. Insertion groove; 25. Magnetic block; 3. Lifting hammer; 31. Silicone pad; 4. Hand-tightening bolt; 41. Locking groove. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figure 1-4 This application will be described in further detail.

[0024] This utility model provides an oil pipe extraction device, as shown in Embodiment 1. Figure 1 and Figure 2 The tubing extraction device includes a lifting rod 1, a clamping block 2, and a lifting hammer 3. The clamping block 2 is located at the bottom end of the lifting rod 1 and is threadedly connected to it. Two hand-tightening bolts 4 are threadedly connected to the outer wall of the clamping block 2, evenly spaced circumferentially. The bottom of the clamping block 2 can be fitted onto the metal tubing, and the ends of the two hand-tightening bolts 4 can abut against the outer wall of the metal tubing to clamp it. The lifting hammer 3 is slidably fitted onto the lifting rod 1. A blocking ring 11 is integrally formed at the top of the lifting rod 1. The outer diameter of the blocking ring 11 is larger than the outer diameter of the lifting rod 1, and also larger than the inner diameter of the lifting hammer 3. The user can hold the lifting hammer 3 with their entire hand, causing it to strike the blocking ring 11. After striking the blocking ring 11, the lifting hammer 3 applies an impact force to the lifting rod 1. This impact force, under the action of the hand-tightening bolts 4, applies a pulling force to the metal tubing.

[0025] To ensure the stability of the extraction device, the lifting rod 1, clamping block 2, and lifting hammer 3 are all made of metal. In this embodiment, the lifting hammer 3 is preferably cylindrical, which makes it easier for the operator to hold and allows for a better grip on the lifting hammer 3 to apply force, thereby increasing the impact force of the lifting hammer 3 on the blocking ring 11.

[0026] The outer surface of the lifting hammer 3 is knurled (not shown in the figure). The knurling increases the friction between the lifting hammer 3 and the operator's palm, improving the stability of the lifting hammer 3 when held by the operator.

[0027] Reference Figure 1 and Figure 2 The clamping block 2 has a slot 21 for inserting a metal oil pipe at the end away from the blocking ring 11. The slot 21 has bolt holes on its wall, which pass through the clamping block 2. A hand-tightening bolt 4 is inserted into the bolt hole and threadedly connected to the clamping block 2. Since there are two hand-tightening bolts 4, there are also two bolt holes, which correspond one-to-one with the two hand-tightening bolts 4.

[0028] The slot 21 has a threaded hole 22 at its bottom. A plug-in post 12 is integrally formed at the bottom of the lifting rod 1. The outer diameter of the plug-in post 12 is smaller than the outer diameter of the lifting rod 1. The plug-in post 12 is suitable for insertion into the threaded hole 22 and passes through the bolt hole, located within the slot 21. The plug-in post 12 has a threaded section located within the threaded hole 22 and threadedly connected to the clamping block 2, thereby threading the lifting rod 1 to the clamping block 2. Thus, during assembly, the lifting hammer 3 can be fitted onto the lifting rod 1 from one end of the plug-in post 12, and then the clamping block 2 can be threadedly connected to the plug-in post 12, improving the ease of assembly.

[0029] Reference Figure 1 and Figure 2 Furthermore, the portion of the plug 12 located within the slot 21 can be inserted into the metal oil pipe, providing support for it. When the hand-tightening bolt 4 presses against the metal oil pipe, causing the outer wall of the metal oil pipe to indent, the plug 12 located inside the metal oil pipe can support the metal oil pipe, thereby cooperating with the hand-tightening bolt 4 to clamp the metal oil pipe, making it difficult for the metal oil pipe to detach from the clamping block 2 during the removal process.

[0030] The implementation principle of the oil pipe extraction device in this application embodiment is as follows: a metal oil pipe is inserted into a slot 21, and a connector 12 is inserted into the metal oil pipe. Two hand-tightening bolts 4 are turned, and the two hand-tightening bolts 4 cooperate with the connector 12 located in the metal oil pipe to clamp the metal oil pipe. Then, the lifting hammer 3 is held and moved to make the lifting hammer 3 strike the blocking ring 11. After the lifting hammer 3 strikes the blocking ring 11, it will apply an impact force to the lifting rod 1. This impact force can apply a pulling force to the metal oil pipe under the action of the hand-tightening bolts 4. If the force applied when the lifting hammer 3 strikes the blocking ring 11 is large enough, the metal oil pipe can be pulled out in one go; if the force applied when the lifting hammer 3 strikes the blocking ring 11 is small, then the blocking ring 11 can be struck multiple times. Each time the lifting hammer 3 strikes the blocking ring 11, it can loosen the metal oil pipe to a certain extent.

[0031] Example 2, refer to Figure 3 and Figure 4 The difference between this embodiment and Embodiment 1 is that a silicone pad 31 is fitted on the side of the lifting hammer 3 near the blocking ring 11. The outer diameter of the silicone pad 31 is larger than the outer diameters of the lifting hammer 3 and the blocking ring 11. The silicone pad 31 can protect the operator's hand. When the lifting hammer 3 hits the blocking ring 11, the silicone pad 31 can separate the operator's hand from the blocking ring 11, preventing the palm from being pinched between the lifting hammer 3 and the blocking ring 11.

[0032] Reference Figure 3 and Figure 4 The outer peripheral wall of the hand-tightening bolt 4 is provided with multiple locking grooves 41 spaced apart. A metal locking strip 23 is inserted and installed on the clamping block 2. The metal locking strip 23 is suitable for being inserted into any of the locking grooves 41 to lock the rotation of the hand-tightening bolt 4. After the hand-tightening bolt 4 clamps the metal oil pipe, the metal locking strip 23 is inserted into the corresponding locking groove 41, so that the hand-tightening bolt 4 is not easy to loosen during the process of the lifting hammer 3 impacting the blocking ring 11.

[0033] Reference Figure 3 and Figure 4 In detail, the outer wall of the clamping block 2 is provided with an insertion groove 24, which communicates with the bolt hole. The side of the insertion groove 24 near the lifting hammer 3 penetrates the clamping block 2, and the insertion groove 24 is adapted to communicate with the corresponding locking groove 41. A metal locking strip 23 is inserted into the insertion groove 24, and the end of the metal locking strip 23 near the hand-tightening bolt 4 is inserted into the corresponding locking groove 41 to lock the rotation of the hand-tightening bolt 4. The side of the metal locking strip 23 near the lifting hammer 3 protrudes from the insertion groove 24 to facilitate the removal of the metal locking strip 23 from the locking groove 41.

[0034] The insertion slot 24 has a groove on its wall, and a magnetic block 25 is glued and fixed in the groove. The magnetic block 25 can attract the metal locking strip 23. This makes it less likely for the metal locking strip 23 to come out of the locking slot 41 due to vibration, thus improving the stability of the hand-tightening bolt 4 after clamping the metal oil pipe.

[0035] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0036] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure 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 disclosure.

[0037] 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 technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this disclosure, unless otherwise expressly 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0039] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A tubing extraction device, characterized in that: The device includes a lifting rod (1), a clamping block (2), and a lifting hammer (3). The clamping block (2) is located at the bottom end of the lifting rod (1) and is adapted to be sleeved on a metal oil pipe. A hand-tightening bolt (4) is threaded onto the clamping block (2). The end of the hand-tightening bolt (4) is adapted to press against the outer wall of the metal oil pipe to clamp the metal oil pipe. The lifting hammer (3) is cylindrical and is slidably sleeved on the lifting rod (1). A blocking ring (11) is fixedly provided at the top of the lifting rod (1). The outer diameter of the blocking ring (11) is larger than the outer diameter of the lifting rod (1). The lifting hammer (3) is adapted for the user to hold and impact the blocking ring (11) to apply a pull-out force to the metal oil pipe.

2. The tubing extraction device according to claim 1, characterized in that: The clamping block (2) has a slot (21) for inserting a metal oil pipe at one end away from the blocking ring (11). The slot (21) has a bolt hole on its wall, which passes through the clamping block (2). The hand-tightening bolt (4) is inserted into the bolt hole and threadedly connected to the clamping block (2).

3. The tubing extraction device according to claim 2, characterized in that: The bottom end of the lifting rod (1) is fixedly installed with a plug-in post (12). The outer diameter of the plug-in post (12) is smaller than the outer diameter of the lifting rod (1). The bottom of the slot (21) is provided with a threaded hole (22). The plug-in post (12) is provided with a threaded section. The threaded section on the plug-in post (12) is inserted into the threaded hole (22) and threadedly connected to the clamping block (2).

4. The tubing extraction device according to claim 3, characterized in that: The plug (12) extends into the slot (21), and the plug (12) located in the slot (21) is adapted to be inserted into a metal oil pipe.

5. The tubing extraction device according to claim 1, characterized in that: The outer surface of the lifting hammer (3) is knurled.

6. The tubing extraction device according to any one of claims 1-5, characterized in that: A silicone pad (31) is fitted on the side of the lifting hammer (3) near the blocking ring (11), and the outer diameter of the silicone pad (31) is larger than the outer diameter of the lifting hammer (3).

7. The tubing extraction device according to claim 6, characterized in that: The hand-tightening bolt (4) has multiple locking slots (41) circumferentially. A metal locking strip (23) is inserted into the clamping block (2). The metal locking strip (23) is suitable for being inserted into any of the locking slots (41) to lock the rotation of the hand-tightening bolt (4).

8. The tubing extraction device according to claim 7, characterized in that: The outer wall of the clamping block (2) is provided with a plug groove (24). The plug groove (24) passes through the clamping block (2) on the side near the lifting hammer (3). The plug groove (24) is connected to the locking groove (41). The metal locking strip (23) is inserted into the plug groove (24), and the end of the metal locking strip (23) near the hand-tightening bolt (4) is inserted into the corresponding locking groove (41).

9. The tubing extraction device according to claim 8, characterized in that: The metal locking bar (23) protrudes from the insertion slot (24) on the side near the lifting hammer (3).

10. The tubing extraction device according to claim 8, characterized in that: The groove wall of the insertion slot (24) is provided with a groove, and a magnetic block (25) is glued and fixed in the groove. The magnetic block (25) is suitable for adsorbing the metal locking strip (23).

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