Oil pump plunger laser cladding feeding and discharging tool

Abstract

This invention relates to the field of support device technology and relates to a loading and unloading fixture for laser cladding of oil pump plungers. It includes a fixed loading rack, a unloading rack that slides longitudinally along the lower region of the loading rack near the discharge end, and several horizontally arranged support wires fixedly connected side-by-side to the unloading rack. The upper surface of the loading rack gradually decreases in height towards the discharge end. A positioning protrusion is fixedly connected to the upper surface of the loading rack, and a dividing plate moves vertically up and down along one side of the positioning protrusion. A separating protrusion is fixedly connected to the end of the dividing plate away from the discharge end, and the distance between the separating protrusion and the positioning protrusion is less than the diameter of the plunger. This invention solves the problem in traditional laser cladding machines where, during plunger cladding, the plungers need to be loaded, and existing loading racks cause the plungers to stack together, affecting the gripping accuracy of the gripper.

Description

Technical Field

[0001] This utility model relates to the field of support device technology, specifically to a loading and unloading fixture for laser cladding of oil pump plungers. Background Technology

[0002] In oil extraction, plunger pumps are one of the main pieces of equipment, such as polymer injection pumps in tertiary oil recovery, chemical pumps in heavy oil viscosity reduction, and downhole deep well pumps. Components of plunger pumps, such as the plunger and pump barrel, experience severe wear and corrosion under harsh working conditions involving oil, gas, water, sand, chemicals, and hydrogen sulfide. During operation, the plunger and pump barrel work together to form a friction pair. Friction occurs between the outer surface of the plunger and the inner wall of the pump barrel, causing wear. In environments with severe sand production or high levels of corrosive media, the outer surface of the plunger can experience severe wear and corrosion, leading to leakage and affecting the pump's efficiency and lifespan, severely impacting normal oilfield production. Therefore, laser cladding, using alloy powders with high hardness, excellent wear resistance, and corrosion resistance, is suitable for laser cladding of alloy workpieces with high surface hardness and high wear resistance. Furthermore, it effectively prevents segregation caused by significant differences in the specific gravity of the components during storage, transportation, and use.

[0003] The prior art discloses a patent CN114672803A, the specific method of which is as follows: 1. Drying the nickel-based tungsten carbide coating powder for 30 minutes before laser cladding, and heating it to 120℃; the mass percentage of nickel-based tungsten carbide is: nickel 53.02%, tungsten carbide 43.94%, cobalt 1.98%, boron 0.98%, niobium 0.08%; the niobium particle size is 0.023~0.043mm, the tungsten carbide particle size is 0.025~0.033mm, and the nickel-based particle size is 0.049~0.104mm; 2. Using 35 chromium molybdenum steel as the substrate, the plunger is cleaned with acetone solution. Okay; 3. Before laser cladding with a semiconductor laser, preheat the plunger to 300-400℃, with a laser power of 1400-1600W, a spot width of 2-3.5mm, a scanning speed of 2-23m / min, a protective nitrogen flow rate of 15l / min, and a powder feeding rate of 3-10g / min; 4. After cladding, a surface cladding layer with a thickness of 10-1000μm is formed. Keep the plunger at 400℃ for 8 hours; 5. After the plunger cools down, grind it to achieve a surface finish of Ra0.4um; 6. Test the hardness to be 54-59HRC, with no cracks or pores.

[0004] With use, existing devices, including those mentioned above, have gradually revealed shortcomings in this technology, mainly in the following aspects:

[0005] First, when existing laser cladding machines clad the plungers, the plungers need to be loaded. When using existing loading racks, the plungers are stacked together, which affects the gripping accuracy of the gripper.

[0006] Secondly, after the laser cladding machine tool finishes processing the plunger, it needs to use a feeder to support the processed plunger. The existing feeder is in hard contact with the plunger, which can easily scratch the cladding layer on the plunger surface.

[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model solves the following problems: when laser cladding machines clad plungers, the plungers need to be fed, and the existing feeding racks cause the plungers to stack together, affecting the gripping accuracy of the gripper; and after the laser cladding machine has finished processing the plungers, the unloading rack is needed to support the processed plungers, but the existing unloading racks are in hard contact with the plungers, which can easily scratch the cladding layer of the plungers.

[0009] To solve the above problems, this utility model provides the following technical solution:

[0010] A loading and unloading fixture for laser cladding of oil pump plungers includes a fixed loading rack. A unloading rack is slidably mounted longitudinally in the area below the loading rack near the discharge end. Several horizontally arranged support wires are fixedly connected side by side to the unloading rack. The height of the upper surface of the loading rack gradually decreases towards the discharge end. A positioning protrusion is fixedly connected to the upper surface of the loading rack. A material distribution plate is vertically raised and lowered in the area on one side of the positioning protrusion. A separating protrusion is fixedly connected to the end of the material distribution plate away from the discharge end. The distance between the separating protrusion and the positioning protrusion is less than the diameter of the plunger.

[0011] As an optimized solution, the inclination direction of the upper surface of the material distribution plate is the same as the inclination direction of the upper surface of the feeding rack.

[0012] As an optimized solution, a blocking protrusion is also fixedly connected to the feeding rack near the discharge end.

[0013] As an optimized solution, several positioning protrusions are arranged in parallel along the longitudinal direction, and the number of blocking protrusions and material distribution plates are matched accordingly.

[0014] As an optimized solution, a cylinder is vertically fixed to each of the material distribution plates on the feeding rack, and the material distribution plate is fixed to the telescopic end of the cylinder.

[0015] As an optimized solution, the feeding rack is fixedly connected to support legs near the four corners.

[0016] As an optimized solution, the lower end of the support leg is threadedly connected to a height-adjustable base.

[0017] As an optimized solution, the feeding rack has two columns fixedly connected in parallel to each of the supporting steel wires, and the two ends of the supporting steel wires are fixedly connected to the two columns respectively.

[0018] As an optimized solution, the supporting steel wire is lower than the upper end of the column.

[0019] As an optimized solution, the bottom of the unloading rack near the four corners is fixed with omnidirectional casters.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] By setting up a feeding rack, several plungers to be processed can be supported on its top. Due to the inclined upper surface of the feeding rack, they will normally gather towards the positioning protrusion under the blocking effect of the positioning protrusion. When it is necessary to feed the plungers, the cylinder drives the distribution plate to rise. Since the distribution plate has a separating protrusion and the distance between the separating protrusion and the positioning protrusion is less than the diameter of the plunger, the plunger closest to the positioning protrusion will be lifted so that it is positioned at the height of the positioning protrusion. Since the surface of the distribution plate is also inclined, the lifted plunger will automatically slide down and pass over the positioning protrusion. Finally, it will be positioned under the action of the blocking protrusion, realizing feeding one by one, which makes it easier for the gripping mechanism of the laser cladding equipment to grip the plungers.

[0022] After the laser cladding equipment finishes processing the plunger, the gripping mechanism picks up the plunger and places it on the unloading rack. The support steel wires on the unloading rack can buffer the falling plunger, preventing the phenomenon of hard contact with the steel frame in traditional technology and reducing the damage to the coating on the plunger surface.

[0023] Because the unloading rack is equipped with swivel casters at the bottom, it can be pulled out to transport the processed plungers. After transportation, the unloading rack can be moved to the bottom of the loading rack for use, which is convenient and quick. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the feeding rack of this utility model;

[0027] Figure 3 This is a structural schematic diagram of the material unloading rack of this utility model.

[0028] In the diagram: 1-Loading rack; 2-Unloading rack; 3-Supporting steel wire; 4-Laser cladding equipment; 5-Positioning protrusion; 6-Separating plate; 7-Separating protrusion; 8-Blocking protrusion; 9-Cylinder; 10-Supporting leg; 11-Height adjustment base; 12-Column; 13-Supporting steel wire; 14-Universal caster. Detailed Implementation

[0029] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0030] like Figures 1 to 3 As shown, the loading and unloading fixture for laser cladding of oil pump plungers includes a fixed loading rack 1. A unloading rack 2 is slidably mounted longitudinally in the area below the discharge end of the loading rack 1. Several horizontally mounted support wires are fixedly connected side by side on the unloading rack 2. The height of the upper surface of the loading rack 1 gradually decreases towards the discharge end. A positioning protrusion 5 is fixedly connected to the upper surface of the loading rack 1. A material distribution plate 6 is vertically raised and lowered in the area on one side of the positioning protrusion 5. A separating protrusion 7 is fixedly connected to the end of the material distribution plate 6 away from the discharge end. The distance between the separating protrusion 7 and the positioning protrusion 5 is less than the diameter of the plunger.

[0031] The tilt direction of the upper surface of the material distribution plate 6 is the same as the tilt direction of the upper surface of the feeding rack 1.

[0032] The feeding rack 1 is also fixed with a blocking protrusion 8 near the discharge end.

[0033] Several positioning protrusions 5 are arranged in parallel along the longitudinal direction, and the number of blocking protrusions 8 and material distribution plates 6 are matched accordingly.

[0034] A cylinder 9 is vertically fixed to each material distribution plate 6 on the feeding rack 1, and the material distribution plate 6 is fixed to the telescopic end of the cylinder 9.

[0035] Support legs 10 are fixedly connected to the four corners of the feeding rack 1.

[0036] The lower end of the support leg 10 is threadedly connected to a height-adjustable base 11.

[0037] The unloading rack 2 has two columns 12 fixedly connected in parallel to each supporting steel wire, and the two ends of the supporting steel wire are fixedly connected to the two columns 12.

[0038] The supporting steel wire is lower than the upper end of column 12.

[0039] The bottom of the unloading rack 2 near the four corners is fixed with swivel casters 14.

[0040] The working principle of this device is as follows:

[0041] By setting up the feeding rack 1, several plungers to be processed can be supported on its top. Since the upper surface of the feeding rack 1 is inclined, under the blocking effect of the positioning protrusion 5, they will normally gather towards the positioning protrusion 5 in sequence. When it is necessary to feed the plungers, the cylinder 9 drives the distribution plate 6 to rise. Since the distribution plate 6 is provided with the separating protrusion 7, and the distance between the separating protrusion 7 and the positioning protrusion 5 is less than the diameter of the plunger, the plunger closest to the positioning protrusion 5 will be lifted so that it is positioned at the height of the positioning protrusion 5. Since the surface of the distribution plate 6 is also inclined, the lifted plunger will automatically slide down and pass over the positioning protrusion 5, and finally be positioned under the action of the blocking protrusion 8, realizing feeding one by one, which makes it easier for the gripping mechanism of the laser cladding equipment 4 to grip the plungers.

[0042] After the laser cladding equipment 4 finishes processing the plunger, the gripping mechanism grabs the plunger and places it on the unloading rack 2. The support steel wires on the unloading rack 2 can buffer the falling plunger, preventing the phenomenon of hard contact with the steel frame in traditional technology and reducing the phenomenon of damage to the coating on the plunger surface.

[0043] Because the bottom of the unloading rack 2 is equipped with universal casters 14, the unloading rack 2 can be pulled out to transport the processed plungers. After transportation, the unloading rack 2 can be moved to the bottom of the loading rack 1 for use, which is convenient and quick.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A feeding and discharging tool for laser cladding of a pump plunger, characterized in that: The device includes a fixed feeding rack (1), a lowering rack (2) that slides longitudinally in the area below the discharge end of the feeding rack (1), a number of horizontally arranged support wires that are fixedly connected in parallel on the lowering rack (2), the height of the upper surface of the feeding rack (1) gradually decreases towards the discharge end, a positioning protrusion (5) is fixedly connected to the upper surface of the feeding rack (1), a dividing plate (6) that moves vertically up and down in the area on one side of the positioning protrusion (5), a separating protrusion (7) that is fixedly connected to the end of the dividing plate (6) away from the discharge end, and the distance between the separating protrusion (7) and the positioning protrusion (5) is less than the diameter of the plunger.

2. The feeding and discharging tool for laser cladding of the sucker rod pump plunger according to claim 1, characterized in that: The tilt direction of the upper surface of the material distribution plate (6) is the same as the tilt direction of the upper surface of the feeding rack (1).

3. The loading and unloading fixture for laser cladding of oil pump plungers according to claim 2, characterized in that: The feeding rack (1) is also fixed with a blocking protrusion (8) near the discharge end.

4. The loading and unloading fixture for laser cladding of oil pump plungers according to claim 3, characterized in that: The positioning protrusions (5) are arranged in parallel along the longitudinal direction, and the number of the blocking protrusions (8) and the material distribution plate (6) are matched accordingly.

5. The loading and unloading fixture for laser cladding of oil pump plungers according to claim 4, characterized in that: A cylinder (9) is vertically fixed to each of the material distribution plates (6) on the feeding rack (1), and the material distribution plate (6) is fixed to the telescopic end of the cylinder (9).

6. The loading and unloading fixture for laser cladding of oil pump plungers according to claim 5, characterized in that: The feeding rack (1) is fixed with support legs (10) near the four corners.

7. The loading and unloading fixture for laser cladding of oil pump plungers according to claim 6, characterized in that: The lower end of the support leg (10) is threadedly connected to a height adjustment base (11).

8. The loading and unloading fixture for laser cladding of oil pump plungers according to claim 7, characterized in that: The feeding rack (2) has two columns (12) fixedly connected in parallel to each of the supporting steel wires, and the two ends of the supporting steel wires are fixedly connected to the two columns (12).

9. The loading and unloading fixture for laser cladding of oil pump plungers according to claim 8, characterized in that: The supporting steel wire is lower than the upper end of the column (12).

10. The loading and unloading fixture for laser cladding of oil pump plungers according to claim 9, characterized in that: The unloading rack (2) is fixed with swivel casters (14) at the bottom positions near the four corners.

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