Method for processing and installing irregular blade and vortex plate of hydraulic dynamometer

Abstract

The invention belongs to the technical field of hydraulic dynamometer processing, and particularly provides a hydraulic dynamometer irregular blade and vortex plate processing and mounting method, which comprises the following steps: preparing parts: processing a blade, an inner vortex plate and an outer vortex plate; contact lines of the blades and the end plates are drawn on the assembly platform, the blades are obliquely assembled according to the contact lines, then the inner vortex plate and the outer vortex plate are installed between every two adjacent sets of blades, and the two sides of the inner vortex plate and the two sides of the outer vortex plate are welded and fixed to the blades. According to the method, the problems of blanking and unfolding lofting of irregular blades and vortex plates are solved, the requirement for the assembly size of stainless steel special-shaped parts is met, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic dynamometer processing, and particularly to a processing and installation method for irregular blades and vortex plates of a hydraulic dynamometer. Background Art

[0002] The blades and vortex plates of the Y60 hydraulic dynamometer are of special-shaped structures. The irregular blades and vortex plates are divided into a left-handed layer and a right-handed layer. The structures of the two layers are the same, and the difference lies in the different installation directions of the blades. As Figure 1 shown. The blades are inclined at 45° and spaced 20° around the flange in a circle. The inner and outer vortex plates are separated by the blades. The materials of the blades and vortex plates are both ferritic stainless steel. The blade thickness is 30 mm, and the vortex plate thickness is 15 mm. Due to the absence of a three-dimensional model, it is difficult to process the outer shape and chamfers of the blades and vortex plates. It is difficult to develop and lay out the stainless steel special-shaped vortex plate, resulting in difficult control of the forming size and assembly size. Summary of the Invention

[0003] The present invention provides a processing and installation method for irregular blades and vortex plates of a hydraulic dynamometer, which solves the problems of blanking and developing and laying out of irregular blades and vortex plates, meets the assembly size requirements of stainless steel special-shaped parts, and improves work efficiency.

[0004] The technical solution of the present invention is realized as follows: A processing and installation method for irregular blades and vortex plates of a hydraulic dynamometer includes the following steps: Step 1. Part preparation: including the processing of blades, inner vortex plates, and outer vortex plates; Step 2. Assembly: Draw the contact line between the blade and the end plate on the assembly platform, assemble the blade obliquely according to the contact line, and then install the inner vortex plate and the outer vortex plate between two adjacent groups of blades. Both sides of the inner vortex plate and the outer vortex plate are welded and fixed to the blade.

[0005] In a preferred solution, in the step 1, the processing process of the blade is as follows: 1) Draw the maximum outer dimension of each blade according to the part drawing, and cut the material according to this dimension to make a blade blank; 2) According to the positioning of the general assembly drawing, assemble the blades, trim the positions where the blades interfere with the inner cylinder, outer cylinder, and flange, draw a model drawing according to the trimmed blade blank size, and the holes, chamfers, fillets, straight edges, and arc edges need to be drawn together in the model drawing to complete the model drawing; 3) Machine-process the blade blank: Process all the blades according to the completed model drawing to complete the processing of the blades.

[0006] In a preferred solution, in the step 1, the processing process of the inner vortex plate is as follows: 1) Cut the material according to the maximum unfolded dimension of the inner vortex plate to make an inner vortex plate blank; 2) Machine the chamfers on both sides of the inner vortex plate according to the drawn model diagram of the inner vortex plate; 3) Machine the arc through a flanging machine to complete the machining of the inner vortex plate.

[0007] 4. According to a method for machining and installing an irregular blade and a vortex plate of a hydraulic dynamometer as described in claim 3, characterized in that, in step 2), the chamfers on both sides of the inner vortex plate need to be fitted to the surface of the blade.

[0008] In a preferred solution, in step 3), after machining the arc of the inner vortex plate through a flanging machine, it is necessary to use an inner vortex plate forming template for inspection. The inner vortex plate forming template is designed and formed according to the inner contour of the inner vortex plate.

[0009] In a preferred solution, in step one, the machining process of the outer vortex plate is as follows: 1) Cut the material according to the maximum unfolded size of the outer vortex plate to make a blank of the outer vortex plate; 2) Machine the chamfers on the two arc edges of the outer vortex plate according to the drawn model diagram of the outer vortex plate; 3) Machine the arc through a flanging machine to complete the machining of the outer vortex plate.

[0010] In a preferred solution, in step 3), after machining the arc of the outer vortex plate through a flanging machine, it is necessary to use an outer vortex plate forming template for inspection. The outer vortex plate forming template is designed and formed according to the inner contour of the outer vortex plate.

[0011] In a preferred solution, in step two, the assembly operation includes the following steps: S201. Installation test: First, install the blades, inner vortex plate, and outer vortex plate of the first gear for installation test, including two blades, one inner vortex plate, and one outer vortex plate. Draw the contact line between the blade and the end plate on the assembly platform, assemble the blade obliquely according to the contact line, adjust the height from the upper end of the blade to the end plate and the assembly clearance between the blade and the inner cylinder and the outer cylinder to meet the drawing requirements, and carry out tack welding; S202. Draw the assembly lines of the inner vortex plate and the outer vortex plate on the end plate, place the inner vortex plate and the outer vortex plate between two groups of blades, make the edges of the inner vortex plate and the outer vortex plate coincide with the assembly lines on the end plate, and detect the clearance between the other three sides of the inner vortex plate and the outer vortex plate and the blade, inner flange, and filler plate. If there is installation interference, remove the interfering parts, record the cutting amount, reprocess the other inner vortex plates and outer vortex plates according to the cutting amount, and perform layout according to the actual size for subsequent material cutting; S201. After the installation of the first gear is completed, install the blades, inner vortex plate, and outer vortex plate of other gears in sequence and carry out tack welding.

[0012] In a preferred solution, in step two, the inclination angle of the blade is 45°.

[0013] In a preferred embodiment, in the second step, the blades, the inner scroll plate and the outer scroll plate are symmetrically welded by CO2 gas shielded welding.

[0014] A method for processing and installing irregular blades and scroll plates of a hydraulic dynamometer provided by the present invention has the following beneficial effects: The blades, the inner and outer scroll plates produced by this method not only solve the problem of developing and laying out complex shaped parts, ensure the assembly dimensions of the irregular blades and scroll plates, control the assembly gap, and make the welding of the irregular blades and scroll plates to the hydraulic dynamometer meet the requirements of the drawings. At the same time, it meets the assembly dimension requirements of stainless steel shaped parts and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a structural diagram of irregular blades and scroll plates; Figure 2 It is a schematic diagram of a blade part; Figure 3 It is a cutting and layout drawing of a blade part; Figure 4 It is a schematic diagram of an inner scroll plate part; Figure 5 It is a schematic diagram of an outer scroll plate part; Figure 6 It is a cutting and layout drawing of an outer scroll plate part; Figure 7 It is a cutting and layout drawing of an inner scroll plate part; Figure 8 It is a schematic diagram of blade assembly; Figure 9 It is a schematic diagram of the assembly of the inner and outer scroll plates; Figure 10 It is a schematic diagram of the assembly of a single layer of blades and scroll plates; Figure 11 It is a forming template for the inner scroll plate; Figure 12 It is a forming template for the outer scroll plate; In the figure: right-handed layer 1, left-handed layer 2, blade 3, inner scroll plate 4, outer scroll plate 5, end plate 6, outer cylinder 7, inner cylinder 8, filler plate 9. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] This embodiment takes the processing of a Y60 hydraulic dynamometer as an example, and provides a method for processing and installing irregular blades and vortex plates of a hydraulic dynamometer, including the following steps: Step 1: Parts preparation: including blade, inner vortex plate and outer vortex plate processing. The structure of the processed parts is as follows: Figure 2 , Figure 4 and Figure 5 shown.

[0019] The blade processing process is as follows: 1) Each blade is drawn with the maximum dimensions according to the parts drawing, and cut according to the dimensions to make the blade blank, such as Figure 3 shown.

[0020] 2) Assemble the blades according to the positioning of the general assembly drawing, trim the positions where the blades interfere with the inner cylinder, outer cylinder and flange, and draw the model drawing according to the size of the trimmed blade blank. The model drawing needs to draw the holes, chamfers, fillets, straight edges and arc edges together to complete the model drawing.

[0021] 3) Machining of blade blanks: All blades are machined according to the drawn model drawings, and the blades are processed and ready for installation.

[0022] The processing process of the inner vortex plate is as follows: 1) Cut the inner vortex plate according to its maximum unfolded size to make the inner vortex plate blank, such as Figure 7 shown.

[0023] 2) According to the drawn inner vortex plate model, process the chamfers on both sides of the inner vortex plate, that is, the chamfers on the side in contact with the blades. The chamfers on both sides of the inner vortex plate need to fit the surface of the blades.

[0024] 3) The inner vortex plate is processed by the folding machine to complete the processing of the inner vortex plate. After the inner vortex plate is processed by the folding machine, it is necessary to insert the inner vortex plate forming sample for testing. The inner vortex plate forming sample is designed and formed according to the inner contour of the inner vortex plate. In order to ensure the accuracy of the sample, laser cutting is used. Figure 11 The structure of the inner vortex plate after machining is shown in Figure 4 shown.

[0025] The processing of the outer vortex plate is as follows: 1) Cut the outer vortex plate according to its maximum unfolded size to make the outer vortex plate blank, such as Figure 6As shown

[0026] 2) According to the drawn external scroll plate model diagram, chamfer the two arc edges of the external scroll plate. The chamfers at both ends are closely attached to the end plate and the outer cylinder to facilitate subsequent welding.

[0027] 3) Process the arc through a flanging machine to complete the processing of the external scroll plate. After processing the arc of the external scroll plate through the flanging machine, it is necessary to use the external scroll plate forming template for inspection. The external scroll plate forming template is designed and formed according to the inner contour of the external scroll plate. Laser cutting is used to ensure the accuracy of the template. As Figure 12 shown. The structure of the processed internal scroll plate is as Figure 5 shown

[0028] Step 2: Assembly: Draw the contact line between the blade and the end plate on the assembly platform, assemble the blade obliquely according to the contact line, and then install the internal scroll plate and the external scroll plate between two adjacent groups of blades. Both sides of the internal scroll plate and the external scroll plate are welded and fixed to the blade.

[0029] Specifically, the assembly operation includes the following steps: S201. To ensure accuracy, first conduct an installation test. First install the blades, internal scroll plate, and external scroll plate of the first gear for an installation test, including two blades, one internal scroll plate, and one external scroll plate. Draw the contact line between the blade and the end plate on the assembly platform, assemble the blade obliquely according to the contact line. The inclination angle of the blade is 45°. Adjust the height from the upper end of the blade to the end plate and the assembly gap between the blade and the inner cylinder and the outer cylinder to meet the drawing requirements, and carry out tack welding.

[0030] S202. Draw the assembly lines of the internal scroll plate and the external scroll plate on the end plate, place the internal scroll plate and the external scroll plate between two groups of blades, and make the edges of the internal scroll plate and the external scroll plate coincide with the assembly lines on the end plate. Detect the gap between the other three sides of the internal scroll plate and the external scroll plate and the blade, inner flange, and spacer plate. If there is installation interference, remove the interfering parts, record the cutting amount, reprocess the other internal scroll plates and external scroll plates according to the cutting amount, and perform layout according to the actual size for subsequent blanking.

[0031] S201. After the installation of the first gear is completed, install the blades, internal scroll plates, and external scroll plates of other gears in sequence and carry out tack welding.

[0032] The blades and the internal and external scroll plates are welded symmetrically using CO2 gas shielded welding. After welding, grind and clean the weld seams, and perform PT flaw detection. After passing the inspection, clean the inner cavity according to the product cleanliness requirements.

[0033] The blades and scroll plates of the Y60 hydraulic dynamometer manufactured by the above method are inspected and the dimensions fully meet the drawing requirements.

[0034] This method can solve the problems of cutting and development lofting of irregular blades and vortex plates, ensure the assembly dimensions of irregular blades and vortex plates, control the assembly gap, and make the welding of irregular blades and vortex plates to the hydraulic dynamometer meet the requirements of the drawings.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A processing and installation method for irregular blades and vortex plates of a hydraulic dynamometer, characterized in that It includes the following steps: Step 1, part preparation: including the processing of blades, inner scroll plates, and outer scroll plates; Step 2, assembly: draw the contact line between the blade and the end plate on the assembly platform, assemble the blade obliquely according to the contact line, and then install the inner scroll plate and the outer scroll plate between two adjacent groups of blades. Both sides of the inner scroll plate and the outer scroll plate are welded and fixed to the blade.

2. The machining and installation method of an irregular blade and a vortex plate of a hydraulic dynamometer according to claim 1, characterized in that In the above-mentioned Step 1, the processing process of the blade is as follows: 1) Draw the maximum outer dimension of each blade according to the part drawing, and cut the material according to this dimension to make a blade blank; 2) According to the positioning of the general assembly drawing, assemble the blade, trim the positions where the blade interferes with the inner cylinder, outer cylinder, and flange, draw the model drawing according to the trimmed blade blank size, and draw the holes, chamfers, fillets, straight edges, and arc edges in the model drawing to complete the model drawing; 3) Machine process the blade blank: machine process all blades according to the completed model drawing to complete the processing of the blade.

3. A method for machining and installing irregular blades and vortex plates of a hydraulic dynamometer according to claim 1, characterized in that, In the above-mentioned Step 1, the processing process of the inner scroll plate is as follows: 1) Cut the material according to the maximum unfolded size of the inner scroll plate to make an inner scroll plate blank; 2) Machine the chamfers on both sides of the inner scroll plate according to the drawn inner scroll plate model drawing; 3) Machine the arc through a flanging machine to complete the processing of the inner scroll plate.

4. A method for machining and installing irregular blades and vortex plates of a hydraulic dynamometer according to claim 3, characterized in that, In the above-mentioned Step 2), the chamfers on both sides of the inner scroll plate need to fit the surface of the blade.

5. A method for machining and installing an irregular blade and a vortex plate of a hydraulic dynamometer according to claim 3, characterized in that, In the above-mentioned Step 3), after machining the arc of the inner scroll plate through a flanging machine, it is necessary to use an inner scroll plate forming template for inspection. The inner scroll plate forming template is designed and formed according to the inner contour of the inner scroll plate.

6. A method for machining and installing irregular blades and vortex plates of a hydraulic dynamometer according to claim 1, characterized in that In the above-mentioned Step 1, the processing process of the outer scroll plate is as follows: 1) Cut the material according to the maximum unfolded size of the outer scroll plate to make an outer scroll plate blank; 2) Machine the chamfers on the two arc edges of the outer scroll plate according to the drawn outer scroll plate model drawing; 3) Machine the arc through a flanging machine to complete the processing of the outer scroll plate.

7. A method for machining and installing an irregular blade and a vortex plate of a hydraulic dynamometer according to claim 6, characterized in that, In the above-mentioned Step 3), after machining the arc of the outer scroll plate through a flanging machine, it is necessary to use an outer scroll plate forming template for inspection. The outer scroll plate forming template is designed and formed according to the inner contour of the outer scroll plate.

8. A method for machining and installing irregular blades and vortex plates of a hydraulic dynamometer according to claim 1, characterized in that In the above-mentioned Step 2, the assembly operation includes the following steps: S201, installation test: first install the blades, inner scroll plate, and outer scroll plate of the first gear for installation test, including two blades, one inner scroll plate, and one outer scroll plate. Draw the contact line between the blade and the end plate on the assembly platform, assemble the blade obliquely according to the contact line, adjust the height from the upper end of the blade to the end plate and the assembly gap between the blade and the inner cylinder and outer cylinder to meet the drawing requirements, and carry out tack welding; S202, draw the assembly lines of the inner scroll plate and the outer scroll plate on the end plate, place the inner scroll plate and the outer scroll plate between two groups of blades, make the edges of the inner scroll plate and the outer scroll plate coincide with the assembly lines on the end plate, and detect the gap between the other three sides of the inner scroll plate and the outer scroll plate and the blade, inner flange, and filler plate. If there is installation interference, remove the interfering parts, record the cutting amount, reprocess the other inner scroll plates and outer scroll plates according to the cutting amount, and perform layout according to the actual size for subsequent material cutting; S201, after the installation of the first gear is completed, sequentially install the blades, inner scroll plates, and outer scroll plates of other gears and carry out tack welding.

9. A processing and installation method for irregular blades and vortex plates of a hydraulic dynamometer according to claim 8, characterized in that In the above-mentioned Step 2, the inclination angle of the blade is 45°.

10. A method for machining and installing an irregular blade and a vortex plate of a hydraulic dynamometer according to claim 8, characterized in that, In the above-mentioned Step 2, the blades, inner scroll plates, and outer scroll plates are welded symmetrically by CO2 gas shielded welding.

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