Drilling pump cylinder sleeve gland knocking wrench

Abstract

The utility model relates to a knocking wrench for a cylinder sleeve gland of a drilling pump. The knocking wrench comprises a knocking handle, a cylinder sleeve ring and a stress pawl, an opening is formed in one side of the cylinder sleeve ring, the other side of the cylinder sleeve ring is connected with a knocking handle, and a plurality of stress pawls extending in the axial direction are arranged on the cylinder sleeve ring in the circumferential direction at intervals. The piston pull rod can penetrate through the opening so that the cylinder sleeve can be sleeved with the cylinder sleeve ring, the stress pawls can be inserted into gaps between the knocking wings of the cylinder sleeve gland in a one-to-one correspondence mode and abut against the knocking wings, the knocking handle can drive the cylinder sleeve ring and the stress pawls to rotate, and therefore the cylinder sleeve gland can be mounted or dismounted. According to the knocking wrench for the cylinder sleeve gland of the drilling pump, the cylinder sleeve ring is arranged on the periphery of the cylinder sleeve in a sleeving mode, then the knocking handle is knocked to drive the cylinder sleeve ring and the stress pawl to rotate, and due to the fact that the stress pawl abuts against the knocking wing of the cylinder sleeve gland, the stress pawl can drive the cylinder sleeve gland to rotate, so that the cylinder sleeve gland is assembled or disassembled. The structure is simple, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of drilling pump maintenance equipment, and in particular to a drilling pump cylinder liner pressure cap striking wrench. Background Technology

[0002] In the oil drilling industry, the drilling pump is like the heart of drilling; it uses the reciprocating motion of a piston within a cylinder liner to draw in and expel drilling fluid, providing a high-pressure jet for drilling. For example... Figure 1 As shown, the existing drilling pump includes a drilling pump body 1, a piston rod 2, a cylinder liner 3, and a cylinder liner gland 4. The piston rod 2 needs to reciprocate within the cylinder liner 3, but due to harsh working conditions, its service life is relatively short. That is, when the piston rod 2 or cylinder liner 3 leaks, the piston rod 2 and cylinder liner 3 must be replaced. When replacing the cylinder liner 3, the cylinder liner gland 4 needs to be removed to extract the piston rod 2 and cylinder liner 3. Currently, the common practice for removing the cylinder liner gland 4 is to repeatedly and forcefully strike the striking flange of the cylinder liner gland 4 with a hammer. However, the cylinder liner gland 4 is inside the drilling pump body 1, and the striking point is small, making it difficult to strike with a hammer. Therefore, the disassembly and assembly of the cylinder liner gland 4 is very difficult.

[0003] Chinese patent document CN111267035B discloses a quick-release tool for drilling pump cylinder liners, including a housing with a hollow piston inside. A protrusion is arranged around the side wall of the hollow piston, and the protrusion is in close contact with the inner side wall of the housing. A hollow piston pressure plate, which covers the hollow piston, is fixedly connected to one end of the housing, and a pressure cap, which is fitted onto the hollow piston, is fixedly connected to the other end of the housing. An oil chamber I is formed inside the housing near the hollow piston pressure plate by the inner side wall of the housing, the protrusion, and the hollow piston. An oil chamber II is formed inside the housing near the pressure cap by the inner side wall of the housing, the protrusion, the hollow piston, and the pressure cap. An oil inlet I communicating with oil chamber I is provided on the housing, and an oil inlet II communicating with oil chamber II is provided on the pressure cap. This quick-release tool for drilling pump cylinder liners replaces the existing cylinder liner flange and cylinder liner pressure cap by adding a double-acting hydraulic cylinder device and is bolted to the frame using the existing drilling pump. However, it suffers from disadvantages such as complex structure and high manufacturing cost.

[0004] Therefore, there is an urgent need for a drilling pump cylinder liner pressure cap striking wrench that is simple in structure, low in cost, and easy to operate. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a drilling pump cylinder liner cap knocking wrench, which solves the technical problem of difficult disassembly of the drilling pump cylinder liner cap.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model embodiment provides a drilling pump cylinder liner gland striking wrench, including a striking handle, a cylinder liner ring, and a force-receiving pawl;

[0010] The cylinder liner ring has an opening on one side and a knocking handle on the other side. The cylinder liner ring is provided with multiple force-bearing pawls at intervals along the circumference.

[0011] The opening allows the piston rod to pass through so that the cylinder liner ring is fitted onto the cylinder liner. The force-bearing pawl can be inserted into the gap between the knocking wings of the cylinder liner head and abut against the knocking wings. The knocking handle can drive the cylinder liner ring and the force-bearing pawl to rotate, thereby installing or removing the cylinder liner head.

[0012] Optionally, the force-bearing pawl has a pawl body and a snap-fit ​​part, one end of the pawl body is connected to the cylinder liner ring, and the other end of the pawl body is connected to the snap-fit ​​part;

[0013] The pawl body extends axially along the cylinder liner ring, and the snap-fit ​​part extends circumferentially along the cylinder liner ring, thus forming an L-shaped structure.

[0014] Optionally, the cross-section of the striking handle is rectangular, and the area of ​​the cross-section of the striking handle gradually decreases along the direction away from the cylinder liner ring.

[0015] Optionally, a reinforcing part is provided at the end of the striking handle away from the cylinder liner ring.

[0016] Optionally, the inner diameter of the cylinder liner ring is the same as the outer diameter of the cylinder liner.

[0017] Alternatively, the striking handle, cylinder liner ring, and load-bearing pawl can be connected by welding.

[0018] Optionally, the striking handle, cylinder liner ring, and force-bearing pawl are integrally molded.

[0019] Optionally, the drilling pump cylinder liner gland striking wrench is a steel wrench.

[0020] (III) Beneficial Effects

[0021] The beneficial effects of this utility model are as follows: The drilling pump cylinder liner pressure cap striking wrench of this utility model includes a striking handle, a cylinder liner ring, and a force-receiving pawl; one side of the cylinder liner ring is provided with an opening, and the other side of the cylinder liner ring is connected to the striking handle; multiple force-receiving pawls are arranged at intervals along the circumference of the cylinder liner ring; the opening allows the piston rod to pass through so that the cylinder liner ring is fitted onto the cylinder liner; the force-receiving pawls can be inserted one-to-one into the gap between the striking wings of the cylinder liner pressure cap and abut against the striking wings; the striking handle can drive the cylinder liner ring and the force-receiving pawls to rotate, thereby installing or removing the cylinder liner pressure cap. Compared to existing methods of disassembling cylinder liner covers by directly striking the striking wings with a hammer, this new drilling pump cylinder liner cover striking wrench involves placing a cylinder liner ring on the cylinder liner, then striking the striking handle with a hammer or other tool to rotate the cylinder liner ring and the force-bearing pawl. The force-bearing pawl abuts against the striking wings of the cylinder liner cover, causing the cylinder liner cover to rotate, thereby installing or removing the cylinder liner cover. This method is simple in structure and low in manufacturing cost. Furthermore, because the striking handle extends out of the drilling pump cylinder body, the striking point is larger, making operation more convenient. Attached Figure Description

[0022] Figure 1 A three-dimensional schematic diagram of a drilling pump in the prior art;

[0023] Figure 2 This is a three-dimensional schematic diagram of Embodiment 1 of the drilling pump cylinder liner pressure cap striking wrench of this utility model;

[0024] Figure 3 for Figure 2 A three-dimensional diagram illustrating the process of removing the cylinder liner cover of a drilling pump using a hammer wrench.

[0025] Figure 4 for Figure 3 A three-dimensional schematic diagram of a drilling pump cylinder liner gland striking wrench, piston rod, cylinder liner, and cylinder liner gland;

[0026] Figure 5 for Figure 4 An exploded view of the drilling pump cylinder liner gland striking wrench and cylinder liner gland.

[0027] [Explanation of Labels in the Attached Image]

[0028] 1: Drilling pump cylinder body; 2: Piston rod; 3: Cylinder liner; 4: Cylinder liner gland; 41: Knocking wing; 5: Knocking handle; 51: Reinforcing part; 6: Cylinder liner ring; 61: Opening; 7: Force-bearing pawl; 71: Pawl body; 72: Snap-fit ​​part. Detailed Implementation

[0029] To better explain and facilitate understanding of this utility model, a detailed description of the present utility model is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that in this embodiment, "axial" refers to the axial direction of the piston rod 2 of the drilling pump, and "circumferential" refers to the circumferential direction of the piston rod 2.

[0030] Example 1:

[0031] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The existing drilling pump includes a drilling pump cylinder body 1, a piston rod 2, a cylinder liner 3 and a cylinder liner cover 4. Multiple striking wings 41 are spaced apart on the circumferential surface of the cylinder liner cover 4, and there is a gap between adjacent striking wings 41.

[0032] This embodiment provides a drilling pump cylinder liner gland striking wrench, including a striking handle 5, a cylinder liner ring 6, and a force-bearing pawl 7. One side of the cylinder liner ring 6 has an opening 61, and the other side of the cylinder liner ring 6 is connected to the striking handle 5. Multiple axially extending force-bearing pawls 7 are spaced apart on the circumferential surface of the cylinder liner ring 6.

[0033] The opening 61 allows the piston rod 2 to pass through radially, so that the cylinder liner ring 6 is axially fitted onto the cylinder liner 3. The force-bearing pawl 7 can be inserted into the gap between the knocking wings 41 one by one and abut against the knocking wings 41. The knocking handle 5 can drive the cylinder liner ring 6 and the force-bearing pawl 7 to rotate, thereby installing or removing the cylinder liner gland 4.

[0034] The drilling pump cylinder liner cap striking wrench of this embodiment, due to its aforementioned structure, firstly, allows the piston rod 2 to radially pass through the opening 61 of the cylinder liner ring 6; then, the drilling pump cylinder liner cap striking wrench is moved axially so that the cylinder liner ring 6 is fitted onto the cylinder liner 3, and the force-receiving pawls 7 are inserted into the gaps between the striking wings 41 and abut against the striking wings 41; finally, the striking handle 5 is struck with a hammer or other tool, causing the cylinder liner ring 6 and the force-receiving pawls 7 to rotate, which in turn causes the cylinder liner cap 4 to rotate, thereby performing installation or disassembly work. Its structure is simple and its manufacturing cost is low. Furthermore, because the striking handle extends out of the drilling pump cylinder body, its striking point is larger, making operation more convenient.

[0035] Preferably, the inner diameter of the cylinder liner ring 6 is the same as the outer diameter of the cylinder liner 3. In this way, the cylinder liner ring 6 can fit completely against the cylinder liner 3.

[0036] Preferably, the cross-section of the striking handle 5 is rectangular, and the area of ​​the cross-section of the striking handle 5 gradually decreases along the direction away from the cylinder liner ring 6. The purpose of this design is to save costs and reduce the overall weight of the drilling pump cylinder liner gland striking wrench.

[0037] Please see Figure 3 The striking handle 5 has a reinforcing part 51 at the end away from the cylinder liner ring 6 to withstand the striking force. The reinforcing part 51 is a protrusion, and its purpose is to improve the structural strength of the striking handle 5 and prevent it from being damaged after being struck repeatedly by the hammer.

[0038] Please see Figure 5 The force-bearing pawl 7 has an L-shaped structure, with a pawl body 71 and a locking part 72 connected to each other. The pawl body 71 extends axially, with one end connected to the cylinder liner ring 6 and the other end provided with a locking part 72 extending circumferentially. It should be noted that when the pawl body 71 and the locking part 72 pass through the gap between the striking wings 41, by rotating the cylinder liner ring 6, the gap between the locking part 72 and the striking wings 41 is misaligned, and the locking part 72 engages with the striking wings 41. This can prevent the force-bearing pawl 7 from disengaging from the gap between the striking wings 41, and the multiple force-bearing pawls 7 make the force distribution on the drilling pump cylinder liner cover striking wrench more even, which facilitates the disassembly of the cylinder liner cover 4.

[0039] Preferably, the drilling pump cylinder liner pressure cap striking wrench is a steel wrench.

[0040] In this embodiment, the striking handle 5, the cylinder liner ring 6, and the force-bearing pawl 7 are connected by welding.

[0041] Example 2:

[0042] Reference Figure 3 This embodiment provides another drilling pump cylinder liner cap striking wrench. The difference from embodiment 1 is that the striking handle 5, cylinder liner ring 6 and force-bearing pawl 7 of the drilling pump cylinder liner cap striking wrench in this embodiment are integrally formed structures.

[0043] The drilling pump cylinder liner gland striking wrench of this embodiment is integrally molded. Compared with the welding method in Embodiment 1, this significantly improves the strength and durability of the wrench, as well as increasing efficiency and reducing shape complexity, while minimizing processing time and workstations. Furthermore, integral molding avoids key issues such as seams and oxidation, further enhancing the wrench's performance and reliability.

[0044] The remaining parts that are the same as in Example 1 will not be repeated here.

[0045] In the description of this utility model, it should be understood that 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 indicated technical features. Therefore, 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.

[0046] 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature 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 indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is 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.

[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] 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 modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A drilling pump cylinder liner gland striking wrench, characterized in that: Includes a striking handle (5), a cylinder liner ring (6), and a force-bearing pawl (7); The cylinder liner ring (6) has an opening (61) on one side and a knocking handle (5) on the other side. The cylinder liner ring (6) is provided with multiple force-bearing pawls (7) spaced apart along the circumference. The opening (61) allows the piston rod (2) to pass through so that the cylinder liner ring (6) can be fitted onto the cylinder liner (3). The force-bearing pawl (7) can be inserted into the gap between the knocking wings (41) of the cylinder liner cover (4) and abut against the knocking wings (41). The knocking handle (5) can drive the cylinder liner ring (6) and the force-bearing pawl (7) to rotate, thereby installing or removing the cylinder liner cover (4).

2. The drilling pump cylinder liner pressure cap striking wrench as described in claim 1, characterized in that: The force-bearing pawl (7) has a pawl body (71) and a snap-fit ​​part (72). One end of the pawl body (71) is connected to the cylinder liner ring (6), and the other end of the pawl body (71) is connected to the snap-fit ​​part (72). The pawl body (71) extends axially along the cylinder liner ring (6), and the snap-fit ​​part (72) extends circumferentially along the cylinder liner ring (6), thus forming an L-shaped structure.

3. The drilling pump cylinder liner pressure cap striking wrench as described in claim 1, characterized in that: The cross-section of the striking handle (5) is rectangular, and the area of ​​the cross-section of the striking handle (5) gradually decreases along the direction away from the cylinder liner ring (6).

4. The drilling pump cylinder liner pressure cap striking wrench as described in claim 3, characterized in that: A reinforcing part (51) is provided at the end of the striking handle (5) away from the cylinder liner ring (6).

5. The drilling pump cylinder liner pressure cap striking wrench as described in claim 1, characterized in that: The inner diameter of the cylinder liner ring (6) is the same as the outer diameter of the cylinder liner (3).

6. The drilling pump cylinder liner pressure cap striking wrench as described in claim 1, characterized in that: The striking handle (5), cylinder liner ring (6) and force-bearing pawl (7) are connected by welding.

7. The drilling pump cylinder liner pressure cap striking wrench as described in claim 1, characterized in that: The striking handle (5), cylinder liner ring (6), and force-bearing pawl (7) are integrally molded structures.

8. The drilling pump cylinder liner gland striking wrench as described in any one of claims 1-7, characterized in that: The drilling pump cylinder liner gland striking wrench is a steel wrench.

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