A large-scale mobile axial flow pump impeller support

Abstract

The utility model relates to processing auxiliary fixture technical field, concretely relates to a movable large -scale axial flow pump impeller support, including chassis and main support column, the upper surface of chassis sets up main support column, and sets up auxiliary support arm between main support column. The utility model can provide enough support strength, and has solved the problem that traditional support cannot move, in the face of the large -scale axial flow pump impeller of various specifications, through the flexible setting arc -shaped support frame, the universality problem has been solved, and the equipment management difficulty has been reduced, even if the impeller is placed, has the special support to fine tune its height, and the difficulty of installation and maintenance has been reduced.

Description

Technical Field

[0001] This utility model relates to the field of machining auxiliary fixture technology, specifically to a movable large axial flow pump impeller support. Background Technology

[0002] In the actual operation and maintenance of large axial flow pumps, the impeller is a core component, and its installation and maintenance are of paramount importance. However, the existing support equipment is difficult to meet the operational needs of 8-10 ton impellers and has many technical drawbacks that need to be addressed: conventional support designs have limited load-bearing capacity and cannot provide sufficient support strength when facing 8-10 ton heavy impellers. During the support process, deformation or even collapse is likely to occur, which seriously affects operational safety and efficiency.

[0003] For example, when a large water conservancy pumping station uses ordinary supports to support a large impeller, the impeller tilts and the blades are damaged due to insufficient support, resulting in significant economic losses. This is a typical problem of insufficient support capacity. At the same time, most traditional supports are fixed and lack mobility, which greatly reduces work efficiency.

[0004] In addition, the impellers of large axial flow pumps of different models and specifications have different shapes and sizes. Existing brackets can often only be adapted to impellers of specific specifications. For large axial flow pump impellers weighing 8 to 10 tons and with various specifications, the versatility is poor. Enterprises need to purchase a variety of brackets to meet different operational needs, which increases the difficulty of equipment management.

[0005] More importantly, traditional support structures have structural design flaws and poor stability, making them unable to effectively cope with changes in the weight and center of gravity distribution of large impellers. During operation, they are prone to swaying and displacement, affecting the installation accuracy of the impeller and even causing safety accidents. In particular, due to the large weight of the impeller and the difficulty in changing its height after placement, it is difficult to make fine-tuning adjustments. Currently, there is a lack of devices on the market that can achieve fine-tuning of height, further increasing the difficulty of installation and maintenance. Given the above-mentioned problems such as insufficient support capacity, lack of mobility, limited adaptability, and poor stability,

[0006] Therefore, it is necessary to invent a movable large axial flow pump impeller support to solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a movable large axial flow pump impeller support that can provide sufficient support strength and solve the problem of traditional supports being unable to move. When faced with large axial flow pump impellers of various specifications, the flexible arc-shaped support frame solves the problem of universality and reduces the difficulty of equipment management. Even after the impeller is placed, there is a special support to fine-tune its height, which reduces the difficulty of installation and maintenance.

[0008] To achieve the above objectives, the present invention provides the following technical solution: including a chassis and main support columns, the main support columns are provided on the upper surface of the chassis, auxiliary support arms are provided between the main support columns, and the two ends of the auxiliary support arms are respectively fixedly connected to the main support columns. An arc-shaped support frame is detachably provided on the upper surface of the auxiliary support arm; the arc-shaped support frame can fit the axial flow pump impeller.

[0009] Preferably, the upper surface of the auxiliary support arm is provided with a dovetail groove, and the dovetail groove is provided with a through bolt hole in the vertical direction, and a pulley is provided on the lower surface of the chassis.

[0010] Preferably, the auxiliary support arm is made of I-beam.

[0011] This utility model also provides an axial flow pump impeller support, including vertical columns and horizontal beams, with a horizontal beam between the vertical columns and a fixing ring between the vertical columns. The fixing ring is located above the horizontal beam and is used to mount the axial flow pump impeller.

[0012] Preferably, an elastic pad is provided on the upper surface of the fixing ring.

[0013] This utility model also provides a bracket, including symmetrically arranged columns connected by a crossbeam. A support plate is provided on the side of the column, and a fixing block is provided below the support plate. The fixing block is movably connected to both ends of a threaded rod, and a crank is provided at one end of the threaded rod. The threaded rod penetrates the threaded block and is engaged with the threaded block.

[0014] Preferably, the side of the threaded block is movably connected to one end of the rocker arm, the other end of the rocker arm is movably connected to the top of the positioning rod, and the bottom end of the positioning rod is movably connected to the crossbeam.

[0015] Preferably, the top end of the positioning rod is hinged to the output rod, and a top block is provided on the top of the output rod.

[0016] The technical effects and advantages provided by this utility model in the above technical solution are as follows: The upper surface of the auxiliary support arm is detachably equipped with an arc-shaped support frame; the arc-shaped support frame can fit snugly against the axial flow pump impeller. The arc-shaped support frame directly fits against the outer edge of the impeller, providing radial support and participating in axial positioning, reducing the risk of local deformation of the impeller during hoisting and positioning; as a replaceable component, the arc-shaped support frame is adaptable to impellers of different diameters and curvatures; this solves the problem of versatility and reduces the difficulty of equipment management. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a perspective view of Embodiment 1 of the present utility model; Figure 2 This is a top view of Embodiment 1 of the present invention; Figure 3 This is an exploded view of the fit between the arc-shaped support frame and the dovetail groove in Embodiment 1 of this utility model; Figure 4 This is a perspective view of Embodiment 2 of the present invention; Figure 5 This is a front view of Embodiment 2 of the present invention; Figure 6 This utility model Figure 5 Enlarged view of point A in the middle; Figure 7 This is a perspective view of Embodiment 3 of the present invention; Figure 8 This is a side view of Embodiment 3 of the present invention; Explanation of reference numerals in the attached figures: 100. Chassis; 200. Main support column; 300. Auxiliary support arm; 400. Arc-shaped support frame; 500. Dovetail groove; 600. Bolt hole; 700. Pulley; 1001. Vertical column; 1002. Horizontal beam; 1003. Fixing ring; 1004. Elastic pad; 2001. Column; 2002. Crossbeam; 2003. Support plate; 2004. Fixing block; 2005. Threaded rod; 2006. Handle; 2007. Threaded block; 2008. Rocker arm; 2009. Positioning rod; 2010. Output rod; 2011. Top block. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0020] Example 1: This utility model provides the following... Figure 1-3The illustrated movable large axial flow pump impeller support includes a chassis 100 and main support columns 200. The upper surface of the chassis 100 is provided with the main support columns 200, with 3 to 4 columns (preferably 3). The chassis 100 serves as the load-bearing and structural foundation of the entire machine, bearing the self-weight and operational load of the impeller and support structure, and providing an installation reference for other components. The lower surface of the chassis 100 is equipped with pulleys 700, enhancing the mobility of this design and providing a mobile function. During mobile operation, the chassis 100 also forms a stable contact surface with the ground through the pulleys 700 to lower the center of gravity and suppress the risk of overturning. As the main vertical load-bearing component, it bears the vertical load from the impeller and auxiliary supports and participates in anti-overturning. The main support columns 200 are rigidly connected to the chassis 100. The main support columns 200 are reliably fixedly connected to the auxiliary support arms 300, converting the lateral load into axial compression and shear and distributing it evenly to the chassis 100.

[0021] The pulley 700 enables the chassis 100 to be flexibly transported and positioned in narrow passages or multi-pump scenarios in pumping stations, shortening non-operation time and improving efficiency. The main support column 200 and the chassis 100 together form a stable support frame, limiting the lateral displacement of the impeller during placement and maintenance. Auxiliary support arms 300 are set between the main support columns 200, and the two ends of the auxiliary support arms 300 are fixed to the main support columns 200 respectively. The auxiliary support arms 300 are arranged between the main support columns 200 to form multi-point horizontal support, which significantly improves the overall rigidity of the structure and its resistance to torsion and lateral displacement. In conjunction with the arc-shaped support frame 400, they participate in the radial positioning and attitude maintenance of the impeller.

[0022] An arc-shaped support frame 400 is detachably mounted on the upper surface of the auxiliary support arm 300; the arc-shaped support frame 400 can fit snugly against the axial flow pump impeller. The arc-shaped support frame 400 directly fits against the outer edge of the impeller, providing radial support and participating in axial positioning, reducing the risk of local deformation of the impeller during hoisting and positioning; as a replaceable component, the arc-shaped support frame 400 is adaptable to impellers of different diameters and curvatures; when facing large axial flow pump impellers of various specifications, the flexible arc-shaped support frame 400 solves the problem of versatility and reduces the difficulty of equipment management.

[0023] The upper surface of the auxiliary support arm 300 is provided with a dovetail groove 500, and the side of the arc-shaped support frame 400 is fixed with a dovetail tenon. The dovetail groove 500 and the dovetail tenon on the side of the arc-shaped support frame 400 cooperate to achieve quick positioning, anti-detachment and anti-slip. Under the conditions of hoisting and positioning and under stress, the dovetail groove 500 suppresses the lateral and longitudinal movement of the arc-shaped support frame 400, thereby improving the positioning stability and operation safety.

[0024] The dovetail groove 500 and the arc-shaped support frame 400 work together to guide and bear loads. The arc-shaped support frame 400 has pre-drilled bolt holes 600, which are used for bolt locking. This design effectively constrains both the out-of-plane deformation and in-plane slippage of the arc-shaped support frame 400, ensuring stable load transfer to the auxiliary support arm 300 and the main support column 200. The dovetail groove 500 has through bolt holes 600 in the vertical direction. This design allows bolts to be inserted from different heights, accommodating arc-shaped support frames 400 of different thicknesses or thickened shims, enabling fine-tuning of height and controllable preload; it also facilitates disassembly and maintenance and standardized fastener configuration.

[0025] The dovetail groove 500 and the high-strength bolt form an adjustable fastening connection, ensuring sufficient shear, tensile and torsional resistance.

[0026] The auxiliary support arm 300 uses I-beams. The I-beam cross-section has a high moment of inertia and a high section modulus, providing sufficient support strength. It has excellent bending and torsional resistance in both vertical and horizontal directions. Its relatively light weight helps to reduce the self-weight load and improve the overall load-bearing efficiency of the machine.

[0027] Example 2: As Figure 4-6 As shown, the difference between this embodiment and Embodiment 1 is as follows: This embodiment provides an axial flow pump impeller support, including vertical columns 1001 and horizontal beams 1002. The vertical columns 1001 bear the main vertical load and part of the bending moment, and are the load-bearing backbone of the support. The vertical columns 1001 are set on the ground, and this design together forms a stable vertical force transmission path, suppressing overall settlement and tilting. Horizontal beams 1002 are set between the vertical columns 1001, and the vertical columns 1001 and horizontal beams 1002 are fixedly connected, bearing the lateral load and bending moment, connecting two or more vertical columns 1001 to form a spatially stable frame. A fixing ring 1003 is installed between the vertical columns 1001. The fixing ring 1003 is located above the horizontal beam 1002. The vertical columns 1001 serve as the support and positioning reference for the fixing ring 1003, improving the flatness and positional accuracy of the fixing ring 1003. The fixing ring 1003 is used to place the axial flow pump impeller. That is, the fixing ring 1003 serves as the main support and radial positioning surface of the impeller, directly constraining the radial position and attitude of the impeller. Together with the vertical columns 1001 and the horizontal beam 1002, it forms a multi-point positioning system, reducing the risk of collision and off-center loading during hoisting and positioning.

[0028] An elastic pad 1004 is provided on the upper surface of the fixed ring 1003. The elastic pad 1004 is made of PU material, which provides moderate elasticity and damping, absorbs minor impacts during hoisting and positioning, reduces local stress concentration caused by assembly tolerances, improves contact conditions, prevents indentations caused by rigid contact, and compensates for minor unevenness to a certain extent, thereby improving the stability of the impeller axis and posture when it is placed.

[0029] The other design schemes in this embodiment are the same as those in Embodiment 1.

[0030] Example 3: As Figure 7-8 As shown, the difference between this embodiment and embodiment 2 is that this embodiment provides a support frame, including symmetrically arranged columns 2001. The columns 2001 are arranged in pairs. The columns 2001 serve as the vertical load-bearing and guiding skeleton of the support frame, bearing the vertical load and lateral stability requirements from the impeller and the support components. The columns 2001 ensure that the overall structure does not overturn or deform under heavy load.

[0031] The columns 2001 are connected by a crossbeam 2002. The crossbeam 2002 is a horizontal rigid component that connects the two columns 2001. It is used to distribute the load, improve the overall rigidity and torsional resistance. The crossbeam 2002 also serves as an installation reference surface to support the upper mechanism (such as support plate 2003, threaded rod 2005, and crank handle 2006).

[0032] A support plate 2003 is provided on the side of the column 2001. A fixing block 2004 is provided below the support plate 2003. The support plate 2003 serves as a transitional component for force transmission and positioning, reliably connecting and aligning the upper adjustment mechanism (threaded block 2007, threaded rod 2005, crank handle 2006) with the lower load-bearing structure, and limiting lateral displacement.

[0033] The fixed block 2004 is movably connected to both ends of the threaded rod 2005. The fixed block 2004 is located below the support plate 2003. Its function is to maintain the axial stability of the threaded rod 2005 while it rotates, preventing it from sagging or shifting due to its own weight or external forces, thus ensuring the straightness and accuracy of the adjustment. The threaded rod 2005 is positioned by the fixed block 2004 and driven by the crank handle 2006, acting as a lifting actuator. The threaded rod 2005 converts rotational motion into linear displacement through engagement with the threaded block 2007, enabling fine-tuning of the supported object. The lead and thread profile of the threaded rod 2005 determine the resolution and load-bearing capacity of the fine-tuning.

[0034] A crank handle 2006 is provided at one end of the threaded rod 2005; a manual input device is provided at one end of the threaded rod 2005, and the crank handle 2006 is used to provide driving torque. The crank handle 2006 enables the threaded rod 2005 to overcome friction and load to achieve controllable, low-speed and fine lifting adjustment.

[0035] The threaded rod 2005 penetrates the threaded block 2007 and is engaged with the threaded block 2007. The moving pair component that engages with the threaded block 2007 and the threaded rod 2005 converts the rotational displacement of the threaded rod 2005 into its own lifting along the rod axis. The lower end of the threaded rod 2005 is connected to the support / clamping interface, thereby transmitting the lifting motion to the impeller support structure.

[0036] The side of the threaded block 2007 is movably connected to one end of the rocker arm 2008 (specifically, it is hinged). This design allows the rocker arm 2008 to swing around that point, flexibly introducing manual torque into the adjustment mechanism, avoiding jamming caused by assembly errors, and providing a certain angular tolerance at the end of the stroke. The other end of the rocker arm 2008 is movably connected (specifically, hinged) to the top of the positioning rod 2009. The positioning rod 2009 undertakes the guiding and stabilizing functions. This design allows the positioning rod 2009 to maintain directional stability when it rises and falls with the threaded block 2007, without directly transmitting lateral force back to the threaded pair, thus reducing the risk of self-locking failure and thread wear. The bottom end of the positioning rod 2009 is movably connected to the crossbeam 2002, fixing the lower fulcrum of the positioning rod 2009 on the crossbeam 2002 to form a triangular stabilizing mechanism. When the threaded block 2007 rises and falls, the positioning rod 2009 and the rocker arm 2008 work together to make the threaded block 2007 move along a predetermined straight trajectory, suppressing swaying, torsion, and off-center loading, and improving the smoothness and repeatability of the fine-tuning process.

[0037] The top end of the positioning rod 2009 is hinged to the output rod 2010. The top of the output rod 2010 is provided with a top block 2011 (specifically, the top of the output rod 2010 is fixedly connected to the top block 2011), which smoothly transmits the stable guiding motion of the positioning rod 2009 to the output rod 2010, so that the output rod 2010 can obtain controllable vertical or near-vertical displacement. The hinged form can absorb assembly errors and avoid transmitting lateral forces to the positioning rod 2009, protecting the threaded pair and the guide system.

[0038] As the final contact element with the impeller support, the top block 2011 can be optimized in terms of area and shape according to the bearing and force direction to disperse compressive stress and protect the supported surface. It can also achieve adaptive fine-tuning fit through the hinge with the positioning rod 2009, maintaining uniform force and stable posture during the fine-tuning process. Even after the impeller is placed, Embodiment 3 provides a special bracket to fine-tune its height, reducing the difficulty of installation and maintenance.

[0039] The other design schemes in this embodiment are the same as those in Embodiment 1.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A movable large axial flow pump impeller support, comprising a chassis and a main support column, characterized in that, The upper surface of the chassis is provided with main support columns, and auxiliary support arms are provided between the main support columns. The two ends of the auxiliary support arms are respectively fixed to the main support columns. The upper surface of the auxiliary support arms is detachably provided with an arc-shaped support frame; the arc-shaped support frame can fit the axial flow pump impeller.

2. The movable large axial flow pump impeller support as described in claim 1, characterized in that, The upper surface of the auxiliary support arm is provided with a dovetail groove, and the dovetail groove is provided with a through bolt hole in the vertical direction. The lower surface of the chassis is provided with a pulley.

3. The movable large axial flow pump impeller support as described in claim 2, characterized in that, The auxiliary support arm is made of I-beams.

4. The movable large axial flow pump impeller support as described in claim 1, characterized in that, It also includes vertical columns and horizontal beams, with horizontal beams installed between the vertical columns and fixing rings installed between the vertical columns. The fixing rings are located above the horizontal beams and are used to mount the axial flow pump impeller.

5. The movable large axial flow pump impeller support as described in claim 4, characterized in that, An elastic pad is provided on the upper surface of the fixing ring.

6. The movable large axial flow pump impeller support as described in claim 1, characterized in that, It also includes symmetrically arranged columns, which are connected by crossbeams. Support plates are provided on the sides of the columns, and fixing blocks are provided below the support plates. The fixing blocks are movably connected to both ends of the threaded rod, and a crank is provided at one end of the threaded rod. The threaded rod penetrates the threaded block and is engaged with the threaded block.

7. The movable large axial flow pump impeller support as described in claim 6, characterized in that, The side of the threaded block is movably connected to one end of the rocker arm, the other end of the rocker arm is movably connected to the top of the positioning rod, and the bottom end of the positioning rod is movably connected to the crossbeam.

8. The movable large axial flow pump impeller support as described in claim 7, characterized in that, The top end of the positioning rod is hinged to the output rod, and a top block is provided on the top of the output rod.

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