A quick-release combination tool suitable for mud pump piston liner

Abstract

The utility model discloses a kind of quick-release combination tools suitable for mud pump piston cylinder liner, it is related to mud pump dismounting technical field, comprising:H-shaped piece, for the installation cooperation between cylinder liner and piston assembly, it includes: a pair of fixed rods, which are parallel distributed;Concave plate, vertically fixed between a pair of fixed rods;First slope, set up on fixed rod, and the depth of first slope far from the side of concave plate is less than the depth of its other side;Wherein, when H-shaped piece lifts piston assembly, first slope forms a resistance to piston assembly when moving in the direction of far from concave plate, the utility model cooperates by fixed rod, concave plate and first slope, so that when H-shaped piece lifts and installs piston assembly, the position deviation of piston assembly can be effectively limited, improve the security when assembling.

Description

Technical Field

[0001] This utility model relates to the field of mud pump disassembly and assembly technology, specifically a quick-release assembly tool suitable for mud pump piston cylinder liners. Background Technology

[0002] In critical fields such as oil drilling that rely on heavy-duty mud pumps, the piston and cylinder liner assemblies of the 14-P-220 mud pump are core wear parts, and frequent replacement is the norm for maintenance. For a long time, the replacement operation has followed the inherent pattern of "separate disassembly and assembly": that is, the piston rod assembly must be disassembled first to disconnect it from the power end, and then the worn cylinder liner can be removed separately. After installing the new cylinder liner, the piston rod is then gradually reassembled in reverse. A single replacement often takes more than 1.5 hours. Furthermore, the repeated disassembly and assembly increases the risk of seal damage or installation errors, directly affecting the reliability and efficiency of equipment recovery.

[0003] However, due to the lack of guiding and resistance structures, the center of gravity of the piston assembly and cylinder liner is prone to deviate from the center of the tool during the lifting process, requiring multiple people to cooperate in adjusting the grip posture to balance the force; if the force difference between the two ends of the tool is too large, it is easy to cause the tool to tilt, further aggravating the positional deviation of the piston assembly, increasing the labor intensity of operation, and prolonging the time of a single disassembly and assembly. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a quick-release assembly tool suitable for piston cylinder liners of mud pumps.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A quick-release assembly tool for mud pump piston cylinder liners, comprising:

[0007] H-shaped parts, used for mounting fit between cylinder liners and piston assemblies, include:

[0008] A pair of fixed rods, which are parallel to each other;

[0009] A concave plate is vertically fixed between a pair of fixed rods;

[0010] The first inclined surface is formed on the fixed rod, and the depth of the first inclined surface on the side away from the concave plate is less than the depth on the other side.

[0011] When the H-shaped component lifts the piston assembly, the first inclined surface forms a resistance to the piston assembly as it moves away from the concave plate.

[0012] Preferably, the first inclined surface has multiple sets of limiting grooves at equal intervals along its length, and the opening of the limiting groove faces the concave plate, so that the cross-section of the first inclined surface is a sawtooth structure, and the limiting groove is engaged with the edge of the T-shaped end.

[0013] Preferably, the top of the concave plate is provided with a pad, and the side of the pad facing the groove of the concave plate is provided with a second inclined surface, and the first inclined surface and the second inclined surface are facing opposite directions, so that the T-shaped end of the piston assembly can simultaneously press against the first inclined surface and the second inclined surface.

[0014] Preferably, the piston assembly is positioned in the middle of the H-shaped part by the cooperation of the first inclined surface and the second inclined surface, and the piston assembly is perpendicular to the H-shaped part when it is suspended in the air.

[0015] Preferably, two sets of spiral anti-slip stripes are symmetrically formed at both ends of the fixing rod.

[0016] Preferably, the fixing rod has a through groove along the axial direction, and the two ends of the through groove have threaded structures. At the same time, a transition piece with external threads at both ends can be screwed into the through groove, and the other end of the transition piece can be screwed to a T-shaped piece.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] The first inclined surface on the fixed rod in the H-shaped component can form resistance along the "direction away from the concave plate" when the piston assembly is lifted. That is, the piston assembly will naturally conform to the concave plate under the action of gravity, while the first inclined surface restricts its outward movement in the opposite direction, effectively preventing the piston assembly from sliding along the tool surface and structurally eliminating the safety hazard of the component falling accidentally. Attached Figure Description

[0019] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0020] Figure 1 This is a schematic diagram of the overall H-shaped component of this utility model;

[0021] Figure 2 This is a schematic diagram of the piston assembly installation of this utility model;

[0022] Figure 3 This is a schematic diagram of the overall working area of ​​this utility model;

[0023] Figure 4 This is a front view structural diagram of the H-shaped component of this utility model;

[0024] Figure 5 This utility model Figure 4 Enlarged diagram of point A.

[0025] The following are the markings in the diagram: 1. Cylinder liner; 2. Piston assembly; 3. T-shaped part; 4. H-shaped part; 41. Fixing rod; 411. First inclined surface; 412. Limiting groove; 42. Concave plate; 421. Pad block. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0027] Example

[0028] like Figures 1 to 5 As shown, a quick-release assembly tool for mud pump piston cylinder liners includes:

[0029] H-shaped part 4, used for mounting fit between cylinder liner 1 and piston assembly 2, includes:

[0030] A pair of fixed rods 41, which are distributed in parallel;

[0031] A concave plate 42 is vertically fixed between a pair of fixing rods 41;

[0032] The first inclined surface 411 is formed on the fixed rod 41, and the depth of the first inclined surface 411 on the side away from the concave plate 42 is less than the depth on the other side.

[0033] When the H-shaped part 4 lifts the piston assembly 2, the first inclined surface 411 forms a resistance to the piston assembly 2 as it moves away from the concave plate 42.

[0034] Specifically, when the H-shaped part 4 lifts the T-shaped end of the piston assembly 2, the T-shaped end will slide along the first inclined surface 411 on the H-shaped part 4 towards the concave plate 42 under the combined weight of the piston assembly 2 and the cylinder liner 1. This causes the T-shaped end to press against the side wall of the groove in the concave plate 42, limiting the piston assembly 2 and the cylinder liner 1 to the middle of the H-shaped part 4. This ensures that the force required to lift both ends of the H-shaped part 4 is approximately equal. Furthermore, the first inclined surface 411 ensures that when the height of the end of the H-shaped part 4 inserted into the T-shaped end is too low, the edge of the T-shaped end will abut against the inclined surface of the first inclined surface 411, thereby limiting the positional displacement of the T-shaped end and reducing the probability of the piston assembly 2 accidentally slipping off.

[0035] When disassembling the piston cylinder liner 1 of the 14-P-220 mud pump, treat the piston assembly 2 and cylinder liner 1 as a pre-assembled functional unit and process them as a whole. Only the short section of the tie rod between the piston assembly 2 and the center tie rod of the power end needs to be disconnected. Then, use the cylinder liner 1 remover to remove the connection between the cylinder liner 1 and the cold cylinder. The entire "piston assembly 2-cylinder liner 1" assembly is lifted vertically from the cylinder liner 1 seat hole of the pump body in one smooth and safe manner. Then, the threaded groove of the straight end of the T-shaped part 3 is screwed and fixed to the threaded rod of the piston end of the piston assembly 2. After that, the piston of the cylinder liner 1 is lifted up as a whole. At least two people work together to hold the T-shaped end of the T-shaped part 3 and lift it up, and then smash it down. This causes the cylinder liner 1 to move downward under the action of inertia, and forms a relative movement with the piston assembly 2, which stops moving due to the impact. Then, the piston end of the piston assembly 2 is pulled out from the cylinder liner 1.

[0036] When installing piston assembly 2 and cylinder liner 1, first pass the T-shaped end of the new piston assembly 2 back through the inner cavity of cylinder liner 1, so that the piston end is engaged at the opening of cylinder liner 1. Then, place cylinder liner 1 and piston assembly 2 vertically with the T-shaped ends facing upwards, and insert H-shaped part 4 under the T-shaped end. At least two workers hold both ends of H-shaped part 4 and pull upwards. Then, the relative movement between cylinder liner 1 and piston assembly 2 can be caused by the weight of cylinder liner 1 itself, so that the piston end of piston assembly 2 is pulled into cylinder liner 1. After that, the piston assembly 2 and cylinder liner 1 are hoisted into the tie rod box and installed into the cold cylinder of the mud pump. Only the piston assembly 2 needs to be connected to the power end, thus completing the quick installation and removal of the mud pump piston cylinder liner 1.

[0037] The process of disassembling and assembling the entire "piston assembly 2 - cylinder liner 1" as a whole simplifies the disassembly and assembly process, shortens the time for each replacement, and significantly reduces the number of operation steps and hoisting times in high-altitude and confined spaces. This significantly reduces the labor intensity and accident risks for workers, avoids the misalignment problem between the piston and cylinder liner 1 that may be caused by separate installation, reduces accidental damage to seals during disassembly and assembly, and improves the initial reliability of operation after maintenance.

[0038] The first inclined surface 411 has multiple sets of limiting grooves 412 evenly spaced along its length, and the opening of the limiting groove 412 faces the concave plate 42, so that the cross section of the first inclined surface 411 is generally sawtooth structure, and the limiting groove 412 is engaged with the edge of the T-shaped end.

[0039] Specifically, the sawtooth structure with decreasing height formed by the combination of the first inclined surface 411 and the limiting groove 412 can make the T-shaped end edge of the piston assembly 2 fit into a certain limiting groove 412. When the height of the H-shaped part 4 is uneven, it can temporarily prevent the sliding of the T-shaped end, providing time for the worker to adjust the grip or the point of force, and further enhancing the safety of operation.

[0040] The concave plate 42 is provided with a pad 421 on its top, and the pad 421 is provided with a second inclined surface on the side facing the groove of the concave plate 42. The first inclined surface 411 and the second inclined surface are facing each other, so that the T-shaped end of the piston assembly 2 can simultaneously press against the first inclined surface 411 and the second inclined surface.

[0041] Specifically, the first inclined surface 411 and the second inclined surface of the pad 421 are arranged opposite to each other, so that the edge of one side of the T-shaped end of the piston assembly 2 abuts against the first inclined surface 411, while the edge of the other side abuts against the second inclined surface, so that when the piston assembly 2 is lifted, the probability of its shaking is reduced, and the locking groove 412 is effectively locked at the edge of the T-shaped end.

[0042] The piston assembly 2 is positioned in the middle of the H-shaped part 4 through the cooperation of the first inclined surface 411 and the second inclined surface, and the piston assembly 2 is perpendicular to the H-shaped part 4 when it is suspended in the air.

[0043] Specifically, this opposing clamping structure ensures that the load center of gravity is stably located on the center line of the H-shaped part 4. This makes the forces on the two workers when lifting the two ends of the H-shaped part 4 basically symmetrical, avoiding dangerous situations such as tool tilting and load swaying caused by the shift of the center of gravity, and ensuring the smoothness and controllability of the lifting process.

[0044] The two ends of the fixing rod 41 are symmetrically provided with two sets of spiral anti-slip stripes.

[0045] Specifically, the spiral anti-slip texture increases the friction between the worker's hand and the fixed rod 41, effectively preventing the tool from slipping or rotating in the hand when lifting heavy objects, enhancing the grip and controllability, and reducing the risk of dropping the tool.

[0046] The fixing rod 41 has a through groove along the axial direction, and the two ends of the through groove have threaded structures. At the same time, a transition piece with external threads at both ends can be screwed into this through groove, and the other end of the transition piece can be screwed to a T-shaped piece 3.

[0047] Specifically, the H-shaped part 4 and the T-shaped part 3 can be fixed together when not in use by the transition parts with screw-in protrusions at both ends, thereby improving the convenience of storage and reducing the problem of temporarily not being able to find a certain part.

[0048] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A quick-release assembly tool suitable for piston cylinder liners of mud pumps, characterized in that, include: H-shaped parts, used for mounting fit between cylinder liners and piston assemblies, include: A pair of fixed rods, which are parallel to each other; A concave plate is vertically fixed between a pair of fixed rods; The first inclined surface is formed on the fixed rod, and the depth of the first inclined surface on the side away from the concave plate is less than the depth on the other side. When the H-shaped component lifts the piston assembly, the first inclined surface forms a resistance to the piston assembly as it moves away from the concave plate.

2. The quick-release assembly tool for a mud pump piston cylinder liner according to claim 1, characterized in that: The first inclined surface has multiple sets of limiting grooves at equal intervals along its length, and the opening of the limiting groove faces the concave plate, so that the cross section of the first inclined surface has a sawtooth structure, and the limiting groove is engaged with the edge of the T-shaped end.

3. A quick-release assembly tool for a mud pump piston cylinder liner according to claim 1, characterized in that: The concave plate is provided with a pad at the top, and the pad is provided with a second inclined surface on the side facing the groove of the concave plate. The first inclined surface and the second inclined surface are facing opposite directions, so that the T-shaped end of the piston assembly can simultaneously press against the first inclined surface and the second inclined surface.

4. A quick-release assembly tool for a mud pump piston cylinder liner according to claim 3, characterized in that: The piston assembly is positioned in the middle of the H-shaped part by the cooperation of the first inclined surface and the second inclined surface, and the piston assembly is perpendicular to the H-shaped part when it is suspended in the air.

5. A quick-release assembly tool for a mud pump piston cylinder liner according to claim 1, characterized in that: The two ends of the fixing rod are symmetrically provided with two sets of spiral anti-slip stripes.

6. A quick-release assembly tool for a mud pump piston cylinder liner according to claim 1, characterized in that: The fixing rod has a through groove along the axial direction, and threaded structures are provided at both ends of the through groove. At the same time, a transition piece with external threads at both ends can be screwed into this through groove, and a T-shaped piece can be screwed to the other end of the transition piece.

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