A welding fixture for the crossbeam of an oil pumping unit

Abstract

This utility model discloses a welding fixture for a pumping unit crossbeam, characterized by comprising: a pad and two shaft hole plate assemblies installed on any one flange of an H-beam; the pad is located between the two shaft hole plate assemblies, each shaft hole plate assembly consisting of two oppositely arranged shaft hole plate bodies; the pad has a first positioning hole group and a first bolt hole group, and the flange correspondingly has a second positioning hole group and a second bolt hole group; the lower end of a positioning pin assembly passes through the first positioning hole group and is installed in the second positioning hole group, and the lower end of a bolt assembly passes through the first bolt hole group and is installed in the second bolt hole group; each shaft hole plate body has a pin hole group, and both ends of each process pin group are installed in the pin hole groups on the two oppositely arranged shaft hole plates. This device is applicable to various types of steel profiles to be welded into crossbeams, is convenient and quick, improves work efficiency, and ensures product accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of oil drilling and production equipment, and in particular to a welding fixture for the crossbeam of an oil pumping unit. Background Technology

[0002] Beam pumping units are one of the main types of pumping units currently used in oil fields. They are mainly composed of a walking beam, a connecting rod, a crank mechanism, a gearbox, a power unit, and auxiliary equipment.

[0003] Currently, the crossbeam of a beam pumping unit is one of the main components connecting and transmitting power. The two lugs on the crossbeam are assembled with the connecting rod pin. It is necessary to ensure that the two lugs are symmetrically and accurately positioned on the crossbeam body, and that their center heights are equal, so that the position between the crossbeam and the connecting rod shaft meets the design requirements.

[0004] The original manufacturing process for the crossbeam involved welding the lugs to the H-beam assembly, followed by machining the entire assembly on a gantry milling machine to create the dimensions of the mounting plate and lug holes. This overall machining process was significantly more expensive than machining individual components using conventional machine tools. Furthermore, considering the small-batch production of the crossbeams, prolonged use of the gantry milling machine would disrupt the machining cycle of other products. Therefore, this fixture was designed for welding, eliminating the need for machining on the gantry milling machine. This fixture still meets the design requirements. Utility Model Content

[0005] In view of this, and to solve the above problems, the purpose of this utility model is to provide a welding fixture for the crossbeam of an oil pumping unit, characterized in that it includes:

[0006] H-beams, pads, locating pin assemblies, bolt assemblies, shaft hole plate assemblies, and process pin assemblies;

[0007] The pad and the two shaft hole plate groups are installed on any one of the flanges of the H-beam. The pad is located between the two shaft hole plate groups. Each shaft hole plate group consists of two shaft hole plate bodies arranged opposite to each other.

[0008] The pad is provided with a first positioning hole group and a first bolt hole group, and the wing plate is provided with a second positioning hole group and a second bolt hole group. The lower end of the positioning pin assembly passes through the first positioning hole group and is installed in the second positioning hole group, and the lower end of the bolt assembly passes through the first bolt hole group and is installed in the second bolt hole group.

[0009] Each of the shaft hole plates is provided with a pin hole group, and the two ends of each process pin group are installed on the pin hole groups on two oppositely arranged shaft hole plates.

[0010] The above-mentioned welding fixture for the crossbeam of an oil pumping unit is characterized in that each of the pin hole groups consists of a first pin hole, or each of the pin hole groups consists of a first pin hole and a second pin hole.

[0011] The above-mentioned welding fixture for the crossbeam of an oil pumping unit is characterized in that the first positioning hole group consists of a first pin hole, or the first positioning hole group consists of a first pin hole and a second pin hole.

[0012] The above-mentioned welding fixture for the crossbeam of an oil pumping unit is characterized in that the second positioning hole group consists of a third pin hole that is disposed opposite to the first pin hole, or the second positioning hole group consists of a third pin hole that is disposed opposite to the first pin hole and a fourth pin hole that is disposed opposite to the second pin hole.

[0013] The above-mentioned welding fixture for the crossbeam of an oil pumping unit is characterized in that the first bolt hole group consists of three first bolt holes, or the first bolt hole group consists of three first bolt holes and three second bolt holes.

[0014] The above-mentioned welding fixture for the crossbeam of an oil pumping unit is characterized in that the second bolt hole group consists of three third bolt holes arranged opposite to the first bolt hole, or the second bolt hole group consists of three third bolt holes arranged opposite to the first bolt hole and three fourth bolt holes arranged opposite to the second bolt hole.

[0015] The above-mentioned welding fixture for the crossbeam of an oil pumping unit is characterized in that the line connecting the three first bolt holes is arranged in an obtuse triangle, and the line connecting the three second bolt holes is also arranged in an obtuse triangle.

[0016] The positive effects of the above technical solution compared with the existing technology are:

[0017] By applying this utility model, a welding fixture for the crossbeam of an oil pumping unit is provided. During welding, the steel profile of the crossbeam to be welded is positioned and fixed by the cooperation of the positioning pin assembly, bolt assembly, two shaft hole plate assembly and two process pin assembly. It can be applied to various types of steel profiles to be welded, which is convenient and quick, improves work efficiency and ensures product accuracy. Attached Figure Description

[0018] Figures 1 to 2 This is a schematic diagram of a welding fixture for the crossbeam of an oil pumping unit according to the present invention.

[0019] Figures 3 to 6 This is a schematic diagram of a second embodiment of the welding fixture for the crossbeam of an oil pumping unit according to the present invention.

[0020] 1. H-beam; 2. Pad; 3. First pin hole; 4. Second pin hole; 5. First locating pin; 6. Second locating pin; 7. First bolt hole; 8. Second bolt hole; 9. First bolt; 10. Second bolt; 11. Shaft hole plate; 12. First pin hole; 13. Second pin hole; 14. First process pin; 15. Second process pin; 16. Ear seat; 17. Plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0022] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0023] like Figures 1 to 6 As shown, a preferred embodiment of the welding fixture for the crossbeam of an oil pumping unit is illustrated, comprising: an H-beam 1, a backing plate 2, a locating pin assembly, a bolt assembly, a two-axis hole plate assembly, and two process pin assemblies.

[0024] The pad 2 and two shaft hole plate assemblies are installed on any one of the flanges of the H-beam 1. The pad 2 is located between the two shaft hole plate assemblies. Each shaft hole plate assembly consists of two oppositely arranged shaft hole plate bodies 11. The pad 2 is provided with a first positioning hole group and a first bolt hole group. The flange is provided with a second positioning hole group and a second bolt hole group. The lower end of the positioning pin assembly passes through the first positioning hole group and is installed in the second positioning hole group. The lower end of the bolt assembly passes through the first bolt hole group and is installed in the second bolt hole group. Each shaft hole plate body 11 is provided with a pin hole group. The two ends of each process pin group are installed in the pin hole groups on the two oppositely arranged shaft hole plate bodies 11.

[0025] In actual use, the welding fixture for the pumping unit's crossbeam is placed on the assembly platform, with the platform's flatness controlled within ±1mm. The welded steel components of the crossbeam are assembled with the welding fixture, aligning the centerline of the welded steel with the centerline of the welding fixture, with a tolerance of ≤0.5mm. The locating pin assembly is inserted and tightened with bolts, ensuring a tight fit between the mounting plate 17 and the pad 2 of the welded steel components of the crossbeam. The lugs 16 at both ends of the crossbeam are fixed to the two shaft hole plates using two process pin sets, aligning the centerline of the welded steel with the lugs, with a tolerance of ≤0.5mm. The root pass and filler welds are then completed at the connection between the welded steel and the lugs. After the welds have cooled, the crossbeam and welding fixture are removed, and any unwelded seams are welded to complete the process.

[0026] Based on the above, this utility model also has the following embodiments:

[0027] Furthermore, a welding fixture for a pumping unit crossbeam is characterized in that each pin hole group consists of a first pin hole 12, or each pin hole group consists of a first pin hole 12 and a second pin hole 13.

[0028] Furthermore, a welding fixture for a pumping unit crossbeam is characterized in that the first positioning hole group consists of a first pin hole 3, or the first positioning hole group consists of a first pin hole 3 and a second pin hole 4.

[0029] Furthermore, a welding fixture for a pumping unit crossbeam is characterized in that the second positioning hole group consists of a third pin hole disposed opposite to the first pin hole 3, or the second positioning hole group consists of a third pin hole disposed opposite to the first pin hole 3 and a fourth pin hole disposed opposite to the second pin hole 4.

[0030] Furthermore, a welding fixture for a pumping unit crossbeam is characterized in that the first bolt hole group consists of three first bolt holes 7, or the first bolt hole group consists of three first bolt holes 7 and three second bolt holes 8.

[0031] Furthermore, a welding fixture for a pumping unit crossbeam is characterized in that the second bolt hole group consists of three third bolt holes arranged opposite to the first bolt hole 7, or the second bolt hole group consists of three third bolt holes arranged opposite to the first bolt hole 7 and three fourth bolt holes arranged opposite to the second bolt hole 8.

[0032] Furthermore, a welding fixture for a pumping unit crossbeam is characterized in that the line connecting the three first bolt holes 7 is arranged in an obtuse triangle, and the line connecting the three second bolt holes 8 is arranged in an obtuse triangle.

[0033] Example 1:

[0034] This tooling only has a first pin hole 3, a first bolt hole 7, and a first pin shaft hole 12. At this time, this tooling can be used for the crossbeam of the 12-type pumping unit. Place the ear seat 16 of the 12-type pumping unit crossbeam in the corresponding shaft hole plate 11, and place the mounting plate 17 of the 12-type pumping unit crossbeam on the pad plate 2. At this time, each positioning pin assembly consists of only one first positioning pin 5, the bolt assembly consists of three first bolts 9, and the process pin group consists of one first process pin 14. After the 12-type pumping unit crossbeam is placed, the first process pin 14 is installed in the first pin shaft hole 12, the first bolt 9 is installed in the first bolt hole 7 and the third bolt hole, and the first positioning pin 5 is installed in the first pin hole 3.

[0035] Example 2:

[0036] This tooling is equipped with a first pin hole 3, a second pin hole 4, a first bolt hole 7, a second bolt hole 8, a first pin shaft hole 12, and a second pin shaft hole 13. This tooling can be used for both the crossbeam of a type 12 pumping unit and the crossbeam of a type 10 pumping unit. Each positioning pin assembly consists of a first positioning pin 5 and a first and second positioning pin 6. The bolt assembly consists of three first bolts 9 and three second bolts 10. The process pin assembly consists of a first process pin 14 and a second process pin 15. When using the crossbeam of a type 12 pumping unit, the first process pin 14 is installed in the first pin shaft hole 12, the first bolt 9 is installed in the first bolt hole 7 and the third bolt hole, and the first positioning pin 5 is installed in the first pin hole 3. When using the crossbeam of a type 10 pumping unit, the second process pin 15 is installed in the second pin shaft hole 13, the second bolt 10 is installed in the second bolt hole 8 and the fourth bolt hole, and the second positioning pin 6 is installed in the second pin hole 4.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding fixture for the crossbeam of an oil pumping unit, characterized in that, include: H-beams, pads, locating pin assemblies, bolt assemblies, shaft hole plate assemblies, and process pin assemblies; The pad and the two shaft hole plate groups are installed on any one of the flanges of the H-beam. The pad is located between the two shaft hole plate groups. Each shaft hole plate group consists of two shaft hole plate bodies arranged opposite to each other. The pad is provided with a first positioning hole group and a first bolt hole group, and the wing plate is provided with a second positioning hole group and a second bolt hole group. The lower end of the positioning pin assembly passes through the first positioning hole group and is installed in the second positioning hole group, and the lower end of the bolt assembly passes through the first bolt hole group and is installed in the second bolt hole group. Each of the shaft hole plates is provided with a pin hole group, and the two ends of each process pin group are installed on the pin hole groups on two oppositely arranged shaft hole plates.

2. The welding fixture for the crossbeam of an oil pumping unit according to claim 1, characterized in that, Each of the said pin hole groups consists of a first pin hole, or each of the said pin hole groups consists of a first pin hole and a second pin hole.

3. The welding fixture for the crossbeam of an oil pumping unit according to claim 1, characterized in that, The first positioning hole group consists of a first pin hole, or the first positioning hole group consists of a first pin hole and a second pin hole.

4. The welding fixture for the crossbeam of an oil pumping unit according to claim 3, characterized in that, The second positioning hole group consists of a third pin hole that is disposed opposite to the first pin hole, or the second positioning hole group consists of a third pin hole that is disposed opposite to the first pin hole and a fourth pin hole that is disposed opposite to the second pin hole.

5. The welding fixture for the crossbeam of an oil pumping unit according to claim 1, characterized in that, The first bolt hole group consists of three first bolt holes, or the first bolt hole group consists of three first bolt holes and three second bolt holes.

6. The welding fixture for the crossbeam of an oil pumping unit according to claim 5, characterized in that, The second bolt hole group consists of three third bolt holes that are arranged opposite to the first bolt hole, or the second bolt hole group consists of three third bolt holes that are arranged opposite to the first bolt hole and three fourth bolt holes that are arranged opposite to the second bolt hole.

7. The welding fixture for the crossbeam of an oil pumping unit according to claim 6, characterized in that, The line connecting the three first bolt holes forms an obtuse triangle, and the line connecting the three second bolt holes also forms an obtuse triangle.

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