Piston rod convenient to disassemble and assemble

Abstract

The piston rod convenient to disassemble and assemble comprises a first rod body and a second rod body, one end of the first rod body is provided with an inserting groove, one end of the second rod body is provided with a plug pin, and after the plug pin is connected with the inserting groove, an arranged fastener completely penetrates through the first rod body and then is in threaded connection with an arranged locking piece. In conclusion, due to the fact that the piston rod is divided into the two rod bodies, under the cooperation of the fastening piece and the locking piece, it can be guaranteed that the positions of the two rod bodies are stable and reliable after the two rod bodies are connected, and on the contrary, the two rod bodies can be rapidly disassembled when the fastening piece and the locking piece are disassembled. On the basis, in the piston replacement process, the complexity of the dismounting process can be simplified, the piston replacement time can be shortened, the labor intensity during piston replacement can be reduced, therefore, the maintenance process can be optimized, the field operation efficiency can be improved, the maintenance and maintenance cost can be reduced, and the piston replacement device is worthy of application and popularization.

Description

Technical Field

[0001] This utility model relates to the field of drilling mud pump technology, specifically to a piston rod that is easy to disassemble and assemble. Background Technology

[0002] The existing integral drilling mud pump has a relatively complex piston removal process, specifically: First, remove the cylinder liner gland. Then, manually rotate the pump disc to ensure the piston rod is at rear dead center. Next, remove the clamp assembly. Using a suitable pry bar, operate between the cylinder liner seat and the cylinder liner shoulder to smoothly separate the cylinder liner from the pump body. Subsequently, pull the piston rod along with the piston out of the cylinder liner. Loosen the piston rod lock nut to remove the piston from the piston rod. Since the lifespan of the ceramic cylinder liner is approximately seven times that of the piston, this means that approximately seven removals and installations of the cylinder liner are required during piston replacement. Following these removal steps not only increases labor costs but also leads to complexity, time consumption, and labor intensity in the disassembly process. Therefore, optimizing the maintenance process is crucial for improving on-site operational efficiency and reducing costs. Utility Model Content

[0003] The purpose of this invention is to provide a piston rod that is easy to assemble and disassemble, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a piston rod that is easy to assemble and disassemble, comprising a first rod body and a second rod body, wherein one end of the first rod body is provided with a slot and one end of the second rod body is provided with a pin; after the pin is connected to the slot, a fastener is provided that completely penetrates the first rod body and engages with a locking member through a thread to fix the first rod body and the second rod body.

[0005] As a preferred technical solution of this utility model: the pin is further provided with a receiving hole, and after the locking member is inserted into the receiving hole, the outer end face of the locking member is flush with the outer wall surface of the first rod.

[0006] As a preferred technical solution of this utility model: the cross-sections of the receiving hole and the locking member are both trapezoidal.

[0007] As a preferred technical solution of this utility model: a cooling pipe is also provided on the outside of the first rod.

[0008] As a preferred technical solution of this utility model: the cooling pipe is U-shaped; wherein, the cooling pipe is connected to an external pipe through a liquid inlet, and the cooling pipe guides liquid to the second rod and the first rod through a liquid outlet.

[0009] As a preferred technical solution of this utility model: the second rod body is further provided with a fixing part on the side away from the pin.

[0010] The beneficial effects of this utility model using the above technical solution are as follows: In summary, by dividing the piston rod into two rod bodies, and with the cooperation of fasteners and locking components, the two rod bodies can be ensured to be stably and reliably connected. Conversely, disassembling the fasteners and locking components allows for the rapid separation of the two rod bodies. Therefore, the complexity of the disassembly process can be simplified during piston replacement, reducing the time and labor intensity required for piston replacement. This optimizes the maintenance process, improves on-site work efficiency, and reduces maintenance and upkeep costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0012] Figure 2 This is a cross-sectional schematic diagram of the main structure of this utility model;

[0013] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0014] Figure 4 This is a side view of the disassembled main structure of this utility model;

[0015] Figure 5 This is a schematic diagram of the other side of the main structure of this utility model after disassembly.

[0016] Figure 6 This is a schematic diagram of the main structure of the cooling pipe of this utility model.

[0017] In the diagram: 1. First rod; 2. Second rod; 3. Cooling pipe; 4. Fastener; 5. Locking element; 6. Slot; 7. Pin; 8. Receiving hole; 9. Fixing part; 10. Liquid inlet; 11. Liquid outlet. Detailed Implementation

[0018] 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. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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 limiting this utility model.

[0019] Please see Figure 1-6 The present invention provides an embodiment of a piston rod that is easy to assemble and disassemble, comprising a first rod body 1 and a second rod body 2. One end of the first rod body 1 is provided with a slot 6, and one end of the second rod body 2 is provided with a pin 7. After the pin 7 is connected to the slot 6, a fastener 4 is provided that completely penetrates the first rod body 1 and then engages with a locking member 5 by thread, so as to fix the first rod body 1 and the second rod body 2.

[0020] In summary, by dividing the piston rod into two sections, and with the cooperation of fastener 4 and locking element 5, the two sections can be reliably and stably connected. Conversely, disassembling fastener 4 and locking element 5 allows for quick separation of the two sections. Therefore, the complexity of the disassembly process can be simplified during piston replacement, reducing replacement time and labor intensity. This optimizes the maintenance process, improves on-site efficiency, and lowers maintenance costs. The fastener 4 is preferably a bolt, and the locking element 5 has a threaded hole compatible with the bolt.

[0021] Furthermore, since the pin 7 is also provided with a receiving hole 8, and after the locking member 5 is inserted into the receiving hole 8, the outer end face of the locking member 5 is flush with the outer wall surface of the first rod body 1. Therefore, while ensuring a reliable connection between the two rod bodies, the problem of the piston rod being affected by the exposed locking member 5 can be reduced. In particular, the receiving hole 8 and the first rod body 1 cooperate to completely accommodate the locking member 5, thus reducing the phenomenon of the locking member 5 sliding due to being exposed.

[0022] Furthermore, since both the receiving hole 8 and the locking member 5 have trapezoidal cross-sections, when the locking member 5 enters the receiving hole 8, firstly, the locking member 5 can be more stably positioned within the receiving hole 8; secondly, it facilitates the smooth entry of the locking member 5 into the receiving hole 8; and thirdly, the entry of the locking member 5 into the receiving hole 8 further ensures the stability of the locking member 5.

[0023] Based on the above scheme, since the first rod body 1 is also provided with a cooling pipe 3 on its outside, the cooling pipe 3 can be used to cool the piston rod.

[0024] Specifically, the cooling pipe 3 is U-shaped; it is connected to an external pipe via a liquid inlet 10, and directs liquid to the second rod 2 and the first rod 1 via a liquid outlet 11. Therefore, this method allows the liquid to enter the piston rod in two separate paths, improving the cooling effect on the piston rod.

[0025] In addition, since the second rod 2 is provided with a fixing part 9 on the side away from the pin 7, it is convenient for tools such as calipers to be clamped on the fixing part 9 to restrict the rotation of the second rod 2. Then, after the fastener 4 and the locking part 5 are disassembled, the fixing part 9 can be clamped and the first rod 1 can be rotated to easily and conveniently separate the pin 7 from the slot 6, thereby further improving the disassembly efficiency of the piston rod.

[0026] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A piston rod that is easy to assemble and disassemble, characterized in that: It includes a first rod (1) and a second rod (2), one end of the first rod (1) is provided with a slot (6), and one end of the second rod (2) is provided with a pin (7); After the pin (7) is connected to the slot (6), the fastener (4) completely penetrates the first rod (1) and engages with the locking member (5) to fix the first rod (1) and the second rod (2).

2. The piston rod that is easy to assemble and disassemble according to claim 1, characterized in that: The pin (7) is also provided with a receiving hole (8), and after the locking member (5) is inserted into the receiving hole (8), the outer end face of the locking member (5) is flush with the outer wall surface of the first rod (1).

3. The piston rod that is easy to assemble and disassemble according to claim 2, characterized in that: Both the receiving hole (8) and the locking member (5) have trapezoidal cross-sections.

4. A piston rod that is easy to disassemble and assemble according to claim 1, 2, or 3, characterized in that: The first rod (1) is also provided with a cooling pipe (3) on its exterior.

5. A piston rod that is easy to assemble and disassemble according to claim 4, characterized in that: The cooling pipe (3) is U-shaped; wherein the cooling pipe (3) is connected to the outside pipe through the liquid inlet (10) and the cooling pipe (3) guides the liquid to the second rod (2) and the first rod (1) through the liquid outlet (11).

6. A piston rod that is easy to assemble and disassemble according to claim 5, characterized in that: The second rod (2) is also provided with a fixing part (9) on the side away from the pin (7).

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