Impeller blade positioning device

Abstract

This utility model discloses an impeller blade positioning device, belonging to the field of impeller manufacturing technology. The impeller blade positioning device includes a rim, a hub, and helical blades. A first clamping member is provided on the inner side of the rim, and a second clamping member is provided on the outer side of the hub. The helical blades are positioned and installed between the rim and the hub using the first and second clamping members. Both ends of the helical blades are welded and fixed to the rim and the hub respectively using the first and second clamping members. This utility model pre-positions multiple helical blades between the rim and the hub using multiple sets of first and second clamping members, and then welds the helical blades to the rim and the hub. Compared to the traditional method of welding helical blades one by one, this significantly improves impeller production efficiency. The distance between the fixing block and the first clamping block can be adjusted using a pre-tightening member to facilitate the installation of the helical blade ends into the clamping slots.

Description

Technical Field

[0001] This utility model relates to the field of impeller manufacturing technology, and in particular to an impeller blade positioning device. Background Technology

[0002] With the rapid development of the shipbuilding industry, there are more and more impeller products, and their sizes are getting larger and larger. Traditional welded impeller blades require multiple alignment methods using scribing, which results in low processing efficiency for impeller parts. Manual scribing and welding are prone to errors, leading to a low pass rate in the production of impeller parts and failing to meet the needs of efficient and high-quality production of welded impellers. Utility Model Content

[0003] The purpose of this invention is to solve the problems of low positioning efficiency, low processing efficiency, and low pass rate of impeller parts production in the existing technology, and to propose an impeller blade positioning device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An impeller blade positioning device includes a rim, a hub, and a helical blade. A first locking member is provided on the inner side of the rim, and a second locking member is provided on the outer side of the hub. The helical blade is positioned and installed between the rim and the hub by the first and second locking members. The two ends of the helical blade are welded and fixed to the rim and the hub by the first and second locking members, respectively.

[0006] In some embodiments, the first and second clips have the same structure, and a plurality of the first clips and a plurality of the second clips are arranged in a circular array with the center point of the hub as the center. The plurality of the first clips correspond one-to-one with the plurality of the second clips and are used to position and fix the plurality of spiral blades.

[0007] In some embodiments, the first locking component includes a welded component, the welded component is provided with a fixing block, and the fixing block is provided with a first locking block and a second locking block on the side away from the welded component. A locking groove is formed between the first locking block and the second locking block, and the spiral blade is positioned and fixed by the locking groove.

[0008] In some embodiments, the fixing block and the first locking block are separate structures, and the fixing block and the first locking block are provided with pre-tightening members, which are used to adjust the distance between the fixing block and the first locking block.

[0009] In some embodiments, the pretensioning member includes a rotating groove, the first locking block has a first threaded hole inside, a rotating head is rotatably connected inside the rotating groove, and a threaded shaft is fixedly connected to the rotating head. One end of the threaded shaft passes through the first threaded hole. The threaded shaft is rotated in both directions to adjust the distance between the fixed block and the first locking block, thereby controlling the edge locking of the spiral blade.

[0010] In some embodiments, the preload includes a second threaded hole on the first locking block, a through hole on the second locking block, a nut at the bottom of the through hole, and a screw. The first locking block is slidably connected to the fixing block. Tightening the screw causes the first locking block to move closer to the second locking block for locking the end of the spiral blade.

[0011] In some embodiments, a support portion is provided below the wheel hub to provide positioning support for the wheel rim and the wheel hub.

[0012] In some embodiments, the support portion includes a support frame, an outer support ring plate, and an inner support ring plate, wherein the top of the outer support ring plate and the inner support ring plate are respectively provided with a first ring groove and a second ring groove.

[0013] Compared with the prior art, the present invention provides an impeller blade positioning device, which has the following beneficial effects.

[0014] 1. In this utility model, multiple helical blades are pre-positioned and installed between the rim and the hub using multiple sets of first and second clamps. Then, the helical blades are welded and fixed to the rim and the hub. Compared with the traditional method of welding helical blades one by one, this method can greatly improve the production efficiency of the impeller, thereby meeting the need for high-efficiency production of welded impellers.

[0015] 2. This utility model allows for adjustment of the distance between the fixing block and the first locking block using a pre-tightening component, facilitating the installation of the helical blade end into the locking groove. After the helical blade is positioned and fixed, the semi-finished impeller can be tested by passing water through it. If the impeller passes the inspection, subsequent welding can proceed. If the inspection fails, the distance between the fixing block and the first locking block can be increased again using the pre-tightening component, and the position of the helical blade can be adjusted for debugging. This ensures efficient impeller production while improving the production quality of the impeller.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the impeller installation structure of this utility model.

[0018] Figure 2This is a schematic diagram of the structure of the first clip, the second clip, and the spiral blade of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the wheel hub of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the first clamping component on the wheel rim of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure for installing the spiral blades of this utility model.

[0022] Figure 6 This is a structural schematic diagram of a pre-tightening component according to the present invention.

[0023] Figure 7 This is a schematic diagram of the internal structure of the fixing block and the first locking block of this utility model.

[0024] Figure 8 This is a structural schematic diagram of another pre-tightening component of this utility model.

[0025] Figure 9 This is a schematic diagram of the bottom structure of the second card block of this utility model.

[0026] Figure 10 This is a schematic diagram of the screw mounting structure of this utility model.

[0027] Figure 11 This is a schematic diagram of the structure of the support part of this utility model.

[0028] Figure 12 This is a schematic diagram of the structure of the outer support ring plate and the inner support ring plate of this utility model.

[0029] In the picture:

[0030] 1. Wheel rim; 2. Wheel hub; 3. First clamping component; 301. Welded component; 302. Fixing block; 303. First clamping block; 305. Second clamping block; 3051. Through hole; 3021. Rotating groove; 3031. First threaded hole; 3032. Threaded shaft; 3033. Rotating head; 3034. Second threaded hole; 4. Second clamping component; 5. Helical blade; 6. Support frame; 601. Outer support ring plate; 602. Inner support ring plate. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] Reference Figure 1-5An impeller blade positioning device includes a rim 1, a hub 2, and a helical blade 5. A first locking member 3 is provided on the inner side of the rim 1, and a second locking member 4 is provided on the outer side of the hub 2. The first locking member 3 and the second locking member 4 have the same structure. There are multiple first locking members 3, which are arranged in a circular array with the center point of the rim 1 as the center. The number of second locking members 4 is equal to the number of first locking members 3, and the multiple second locking members 4 are arranged in a circular array with the center point of the hub 2 as the center. Each of the multiple first locking members 3 corresponds to one of the multiple second locking members 4. The first locking members 3 and the second locking members 4 are respectively engaged with the two ends of the helical blade 5, and one first locking member 3 and one second locking member 4 are used to lock and position one helical blade 5.

[0033] The first locking component 3 includes a welded component 301, which is fixedly connected to the inner side of the wheel rim 1. The top and bottom of the welded component 301 are respectively fixedly connected to a fixing block 302. The two fixing blocks 302 are provided with a first locking block 303 and a second locking block 305 on the side away from the welded component 301. A locking groove is formed between the first locking block 303 and the second locking block 305.

[0034] In this invention, the inner surface of the wheel rim 1 is pre-fixed with a first fastener 3 at a predetermined position, and the outer surface of the wheel hub 2 is pre-fixed with a second fastener 4 at a predetermined position. Specifically, the welded part 301 in the first fastener 3 is fixedly connected to the inner wall of the wheel rim 1, and the welded part 301 in the second fastener 4 is fixedly connected to the outer surface of the wheel hub 2. Multiple first fasteners 3 and second fasteners 4 are pre-set on the wheel rim 1 and wheel hub 2 respectively.

[0035] Compared to the traditional method of marking lines on the rim 1 and hub 2 to align the welding position of the helical blades 5, the aforementioned first clamping member 3 and second clamping member 4 are pre-positioned on the rim 1 and hub 2. When the helical blades 5 are installed, only the two ends of the helical blades 5 need to be clamped and positioned with the first clamping member 3 and the second clamping member 4 respectively. This allows for the rapid placement of multiple helical blades 5 between the rim 1 and hub 2. Subsequently, in the next welding process, the two ends of the helical blades 5 are directly welded to each other, fixing them to the inner wall of the rim 1 and the outer surface of the hub 2. This method quickly completes the production of one impeller. This replaces the traditional method of welding impellers, which requires multiple marking lines to align and position the helical blades 5. Furthermore, multiple helical blades 5 can be pre-clamped between multiple sets of first clamping members 3 and second clamping members 4 before welding, significantly improving impeller production efficiency compared to the traditional method of welding helical blades 5 one by one. Among them, the rim 1 and the hub 2 are pre-produced parts. Before the spiral blade 5 is welded, the first clamp 3 and the second clamp 4 can be pre-fixed on the rim 1 and the hub 2 in batches. The spiral blade 5 is also a pre-produced part. During the impeller production, it is only necessary to clamp the rim 1 with the first clamp 3 and the hub 2 with the second clamp 4 to the spiral blade 5 and then weld them to complete the impeller production, which meets the needs of efficient production of welded impellers.

[0036] The welding component 301 is welded and fixed to the wheel rim 1, and the fixing block 302 is fixed to the welding component 301. The fixing block 302 and the first locking block 303 are separate structures. A pre-tightening component is provided between the first locking block 303 and the fixing block 302. The pre-tightening component is used to adjust the distance between the first locking block 303 and the second locking block 305. When the distance between the first locking block 303 and the second locking block 305 increases, the slot between the first locking block 303 and the second locking block 305 increases, so that the spiral blade 5 can be installed into the slot. After the spiral blade 5 is installed in place, the distance between the first locking block 303 and the second locking block 305 is shortened by the pre-tightening component. The first locking block 303 and the second locking block 305 clamp the end of the spiral blade 5. The connection of the wheel rim 1, the spiral blade 5 and the wheel hub 2 is completed in this way.

[0037] like Figure 6 and Figure 7 As shown, specifically, as one embodiment of the pretensioner, the pretensioner includes a rotating groove 3021 opened in the fixed block 302, a first threaded hole 3031 opened inside the first locking block 303, a rotating head 3033 rotatably connected inside the rotating groove 3021, a threaded shaft 3032 fixedly connected to the rotating head 3033, one end of the threaded shaft 3032 away from the rotating head 3033 passing through the first threaded hole 3031, and a cross screw head provided at the other end of the threaded shaft 3032 away from the rotating head 3033.

[0038] The first threaded hole 3031 is obliquely opened on the first locking block 303. The first threaded hole 3031 is perpendicular to the rotating groove 3021. The distance between the fixing block 302 and the first locking block 303 is adjusted by rotating the threaded shaft 3032 in both directions, and the distance between the top of the second locking block 305 and the bottom of the first locking block 303 is adjusted simultaneously to lock the edge of the spiral blade 5.

[0039] In the initial state, one side of the first locking block 303 is at a certain distance from one side of the fixing block 302. At this time, the slot between the bottom of the first locking block 303 and the second locking block 305 is large, which facilitates the installation of the spiral blade 5.

[0040] During assembly, the spiral blade 5 is installed in the slot, and the end of the spiral blade 5 is attached to the second locking block 305. At this time, the operator squeezes the first locking block 303 and moves it through the rotating groove 3021 and the rotating head 3033 to rotate the threaded shaft 3032 in the forward direction. With the external thread on the threaded shaft 3032 engaging with the internal thread of the first threaded hole 3031, the first locking block 303 moves obliquely downward and towards the fixing block 302 and the second locking block 305, clamping the end of the spiral blade 5. In this way, the two ends of the spiral blade 5 are fixed.

[0041] After clamping and installing multiple helical blades 5 as described above, the semi-finished impeller can be tested by passing water through it to verify whether its performance meets the requirements. If the impeller fails the test, welding of the impeller is suspended, and subsequent inspections and adjustments are made. Welding of the helical blades 5 can only proceed after the test conditions are met.

[0042] A marking line can be set at the end of the spiral blade 5, and the marking line corresponds to the outer side of the first locking block 303. When the spiral blade 5 is installed into the locking groove, it is used to assist in the positioning of the spiral blade 5.

[0043] like Figure 8-10 As shown, in another embodiment of the pretensioning component, the fixing block 302 and the first locking block 303 are slidably connected with upper and lower limits. Specifically, a limiting groove is provided on the side of the fixing block 302 near the first locking block 303, and a limiting slider is provided on the side of the first locking block 303 near the fixing block 302. The limiting slider is slidably disposed inside the limiting groove. A second threaded hole 3034 is provided on the first locking block 303, and a through hole 3051 is provided on the second locking block 305. A nut is provided at the bottom of the through hole 3051, and the nut is fixedly connected to the bottom of the through hole 3051. A through hole corresponding to the through hole 3051 is provided at the end of the spiral blade 5.

[0044] In use, the screw that matches the second threaded hole 3034 is screwed through the second threaded hole 3034, the through hole and the through hole 3051 on the spiral blade 5, and aligns with the nut at the bottom of the through hole 3051. Then, as the screw continues to be screwed downward, the lower surface of the screw cap comes into contact with the upper surface of the first locking block 303. As the screw continues to be screwed downward, it drives the first locking block 303 to move downward along the limiting groove. Finally, the bottom end of the first locking block 303 comes into contact with and cooperates with the second locking block 305 to press the spiral blade 5, thus completing the clamping and fixing of the spiral blade 5. In the next welding process, the end of the spiral blade 5 is welded and fixed to the rim 1 and the hub 2.

[0045] like Figure 11-12 As shown, when the helical blade 5 is installed between the rim 1 and the hub 2, a support is provided below the rim 1 and the hub 2 to facilitate the stable installation of the helical blade 5. The support provides positioning support for the rim 1 and the hub 2.

[0046] As one specific embodiment of the support part, the support part includes a support frame 6, an outer support ring plate 601, and an inner support ring plate 602. The top of the outer support ring plate 601 is provided with a first ring groove that corresponds to and cooperates with the wheel rim 1, and the top of the inner support ring plate 602 is provided with a second ring groove that corresponds to and cooperates with the wheel hub 2. When the spiral blade 5 is installed, the support frame 6 is fixed.

[0047] After a spiral blade 5 is installed, the rim 1 and hub 2 can rotate around the center of the support frame 6, which facilitates the installation of the spiral blade 5 with other first clips 3 and second clips 4.

[0048] Furthermore, a lifting assembly is provided on the support frame 6. Two sets of lifting assemblies are provided, each controlling the adjustment of the horizontal height of the outer support ring plate 601 and the inner support ring plate 602. This allows the centerlines of the wheel rim 1 and the wheel hub 2 to align based on their respective heights, specifically ensuring the corresponding positions of the first locking piece 3 and the second locking piece 4 on the wheel rim 1 and the wheel hub 2. When the helical blade 5 is installed between wheel rim 1 and wheel hub 2 at different heights (e.g., the height of the wheel hub 2 is greater than that of the wheel rim 1), the lifting assembly corresponding to the wheel hub 2 retracts, causing the bottom end of the wheel hub 2 to move downwards. This aligns the centerline of the wheel hub 2 with the centerline of the wheel rim 1, thereby ensuring the corresponding positions of the first locking piece 3 and the second locking piece 4.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. An impeller blade positioning device, comprising a rim (1), a hub (2), and helical blades (5), characterized in that, The inner side of the rim (1) is provided with a first clamp (3), and the outer side of the hub (2) is provided with a second clamp (4). The spiral blade (5) is positioned and installed between the rim (1) and the hub (2) by the first clamp (3) and the second clamp (4). The two ends of the spiral blade (5) are welded and fixed to the rim (1) and the hub (2) respectively by the first clamp (3) and the second clamp (4).

2. The impeller blade positioning device according to claim 1, characterized in that, The first clip (3) and the second clip (4) have the same structure. Multiple first clips (3) and multiple second clips (4) are arranged in a ring array with the center point of the hub (2) as the center. Multiple first clips (3) correspond one-to-one with multiple second clips (4) and are used to position and fix multiple spiral blades (5).

3. The impeller blade positioning device according to claim 2, characterized in that, The first clamping component (3) includes a welded component (301), and a fixing block (302) is provided on the welded component (301). A first clamping block (303) and a second clamping block (305) are provided on the side of the fixing block (302) away from the welded component (301). A groove is formed between the first clamping block (303) and the second clamping block (305) to position and fix the spiral blade (5).

4. The impeller blade positioning device according to claim 3, characterized in that, The fixing block (302) and the first locking block (303) are separate structures. The fixing block (302) and the first locking block (303) are provided with pre-tightening members, which are used to adjust the distance between the fixing block (302) and the first locking block (303).

5. The impeller blade positioning device according to claim 4, characterized in that, The pre-tightening component includes a rotating groove (3021), and the first locking block (303) has a first threaded hole (3031) inside. A rotating head (3033) is rotatably connected inside the rotating groove (3021), and a threaded shaft (3032) is fixedly connected to the rotating head (3033). One end of the threaded shaft (3032) passes through the first threaded hole (3031). The threaded shaft (3032) is rotated in both directions to adjust the distance between the fixing block (302) and the first locking block (303) and control the edge locking of the spiral blade (5).

6. The impeller blade positioning device according to claim 4, characterized in that, The pre-tightening component includes a second threaded hole (3034) on the first locking block (303), a through hole (3051) on the second locking block (305), a nut and a screw at the bottom of the through hole (3051). The first locking block (303) is slidably connected to the fixing block (302). Tightening the screw drives the first locking block (303) to approach the second locking block (305) for locking the end of the spiral blade (5).

7. The impeller blade positioning device according to claim 1, characterized in that, The hub (2) is provided with a support part below it, which provides positioning support for the rim (1) and the hub (2).

8. The impeller blade positioning device according to claim 7, characterized in that, The support includes a support frame (6), an outer support ring plate (601), and an inner support ring plate (602). The top of the outer support ring plate (601) and the inner support ring plate (602) are respectively provided with a first ring groove and a second ring groove.

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