Vertical shaft flow pump maintenance access cover plate device

Abstract

The utility model discloses a vertical axial flow pump maintenance access cover plate device, including base frame, elevating gear, a plurality of apron and a plurality of telescopic electric cylinders. The base frame encloses the cylinder space of up and down through, and the vertical axial flow pump is used for installing in the cylinder space. The elevating gear bottom fixed mounting, its top is linked with base frame, is used for driving base frame elevating. The apron is isosceles trapezoidal shape, and the long bottom edge end of each apron is hinged with the inside edge of the upper side opening of base frame, and the lower side of each apron is hinged with one end of a telescopic electric cylinder, and the other end of telescopic electric cylinder is hinged with the lateral wall of base frame. All telescopic electric cylinders stretch to make all aprons be in horizontal position, and at this time, the short bottom edge one end of all aprons encloses the empty brake area, and telescopic electric cylinder contracts to make apron rotate downward. The technical scheme of the application can form the fence through automatic elevating frame, improves the maintenance security, and has the apron of automatic opening and closing, and improves the maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of axial flow pump maintenance technology, and more specifically, to a maintenance port cover device for a vertical axial flow pump. Background Technology

[0002] Vertical axial flow pump stations are a type of pump widely used both domestically and internationally. The pump station is generally installed underground. To facilitate maintenance and repair, maintenance openings are provided around the pump station. The upper end of the maintenance opening is equipped with a cover plate, which can withstand a certain pressure and facilitates the passage of pedestrians and small vehicles.

[0003] The opening and closing of existing maintenance access covers requires manual operation, resulting in low automation, low maintenance efficiency, and certain safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a vertical axial flow pump maintenance port cover device, which can form a fence through an automatic lifting frame to improve maintenance safety; and has an automatically opening and closing cover to improve maintenance efficiency.

[0005] This utility model provides a maintenance port cover device for a vertical axial flow pump, comprising: The basic frame encloses a cylindrical space that runs vertically through the interior; the cylindrical space is designed for the installation of a vertical axial flow pump. The lifting device is fixedly installed at the bottom and connected to the base frame at the top, and is used to drive the base frame to lift. Multiple cover plates and multiple telescopic electric cylinders. The cover plates are in the shape of an isosceles trapezoid. The long bottom edge of each cover plate is hinged to the inner edge of the opening on the upper side of the foundation frame. The lower side of each cover plate is hinged to one end of a telescopic electric cylinder, and the other end of the telescopic electric cylinder is hinged to the side wall of the foundation frame. All telescopic electric cylinders extend to bring all cover plates to a horizontal position, at which point a gap is formed at one end of the short bottom edge of each cover plate; all telescopic electric cylinders retract to rotate all cover plates downwards and toward the side wall of the base frame.

[0006] In one feasible embodiment, the vertical axial flow pump service port cover device further includes a guide structure. A set of guide structures includes a guide rod and at least one guide slider. Multiple guide rods are vertically arranged near the foundation frame, and the guide slider is mounted on the foundation frame, with the guide slider slidingly engaged with the guide rod.

[0007] In one feasible scheme, the number of guide structures is no less than two sets, which are evenly distributed in a circle relative to the center of the basic frame.

[0008] In one feasible solution, there are no fewer than two sets of lifting devices, which are evenly distributed in a circle relative to the center of the basic frame.

[0009] In one feasible solution, when all telescopic electric cylinders are extended to bring all covers to a horizontal position, the gap area enclosed by one end of the short bottom edge of all covers is adapted to the housing dimensions of the vertical axial flow pump.

[0010] In one feasible embodiment, each cover plate is provided with a locking device, which is used to limit or open the rotational capacity of the cover plate.

[0011] In one feasible embodiment, the locking device includes a rotating part, a rotating tongue structure, and a limiting structure. The rotating part is disposed through the cover plate, the rotating tongue structure is located on the back side of the cover plate and mounted on the rotating part, and the rotating tongue structure rotates with the rotation of the rotating part. The limiting structure is disposed on the outer casing side of the vertical axial flow pump. When the rotating tongue structure rotates to the limiting structure, it restricts the downward rotation of the cover plate; when the rotating tongue structure rotates away from the limiting structure, the downward rotation capability of the cover plate is restored.

[0012] In one feasible embodiment, the basic frame includes an upper annular plate, a lower annular plate, and a plurality of vertically arranged cylindrical railings located between the upper and lower annular plates, as well as reinforcing railings that connect the cylindrical railings laterally.

[0013] In one feasible solution, the sidewalls of the basic frame are also equipped with openable and closable access doors.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: When using this invention, maintenance of a vertical axial flow pump may require hoisting relevant components into or out of the cylindrical space of the foundation frame. In this case, the foundation frame can first be raised using a lifting device. This raised foundation frame acts as a guardrail around the vertical axial flow pump, improving construction safety. Then, the telescopic electric cylinder retracts, causing the cover plate to rotate downwards and towards the side wall of the foundation frame, thus automatically opening the cover plate and improving maintenance efficiency.

[0015] During maintenance, if the height of the base frame affects the hoisting of parts, a lifting device can be used to lower the base frame to a suitable position, thereby improving the flexibility of maintenance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1A schematic diagram of the usage status of the vertical axial flow pump maintenance port cover device provided in this application. Figure 1 ; Figure 2 A schematic diagram of the usage status of the vertical axial flow pump maintenance port cover device provided in this application. Figure 2 ; Figure 3 for Figure 1 The front view in the middle; Figure 4 for Figure 1 A sectional view along the vertical axis; Figure 5 for Figure 2 A top view of the status; Figure 6 A schematic diagram of the guide structure for the maintenance port cover device of the vertical axial flow pump provided in this application; Figure 7 for Figure 5 Sectional view along the middle AA.

[0018] In the diagram: 1. Basic frame; 11. Upper annular plate; 12. Lower annular plate; 13. Cylindrical railing; 14. Reinforced railing; 101. Cylindrical space; 2. Lifting device; 3. Cover plate; 4. Telescopic electric cylinder; 5. Guide structure; 51. Guide rod; 52. Guide slider; 6. Locking device; 61. Rotating part; 63. Rotating tongue structure; 64. Limiting structure; 100. Vertical axial flow pump; 200. Mounting base. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-5 As shown, this utility model provides a vertical axial flow pump maintenance port cover device, including a base frame 1, a lifting device 2, multiple cover plates 3 and multiple telescopic electric cylinders 4.

[0023] The basic frame 1 encloses a cylindrical space 101 that extends vertically; the cylindrical space 101 is designed for the installation of a vertical axial flow pump 100. The lifting device 2 is fixedly installed at the bottom and connected to the top of the basic frame 1, and is used to drive the basic frame 1 to lift.

[0024] The cover plate 3 is in the shape of an isosceles trapezoid. The long base edge of each cover plate 3 is hinged to the inner edge of the opening on the upper side of the base frame 1. The lower side of each cover plate 3 is hinged to one end of a telescopic electric cylinder 4, and the other end of the telescopic electric cylinder 4 is hinged to the side wall of the base frame 1. When all the telescopic electric cylinders 4 extend, all the cover plates 3 are in a horizontal position, and at this time, one end of the short base edge of each cover plate 3 forms an empty area. When all the telescopic electric cylinders 4 retract, all the cover plates 3 rotate downward and towards the side wall of the base frame 1.

[0025] In use, when not under maintenance, all telescopic cylinders 4 extend to bring all cover plates 3 to a horizontal position, and the lifting device 2 lowers the base frame 1 to be flush with the surface of the mounting base 200 (e.g., the ground) of the vertical axial flow pump 100. At this time, the surface of the cover plate 3 can be used to support workers or related construction objects.

[0026] When maintenance is required on the vertical axial flow pump 100, it may be necessary to hoist relevant components into or out of the cylindrical space 101 of the foundation frame 1. In this case, the foundation frame 1 can first be raised using the lifting device 2. The raised foundation frame 1 acts as a guardrail around the vertical axial flow pump 100, improving construction safety. Then, the telescopic electric cylinder 4 retracts, causing the cover plate 3 to rotate downwards and towards the side wall of the foundation frame 1, thus automatically opening the cover plate 3 and improving maintenance efficiency.

[0027] During maintenance, if the height of the base frame 1 affects the hoisting of parts, the lifting device 2 can be used to lower the base frame 1 to a suitable position, thereby improving the flexibility of maintenance.

[0028] After the maintenance work is completed, all telescopic cylinders 4 are extended to bring all cover plates 3 into a horizontal position, and the lifting device 2 lowers the base frame 1 to be flush with the surface of the mounting base 200 (e.g., the ground) of the vertical axial flow pump 100. In some embodiments, such as Figure 5 and Figure 6 As shown, the maintenance port cover device for the vertical axial flow pump may also include a guide structure 5. A set of guide structures 5 includes a guide rod 51 and at least one guide slider 52. Multiple guide rods 51 are vertically arranged near the base frame 1, and the guide slider 52 is installed on the base frame 1. The guide slider 52 slides in cooperation with the guide rod 51.

[0029] The guide rod 51 is vertically positioned near the base frame 1, providing a fixed vertical guide reference for the lifting and lowering of the base frame 1 and preventing deviations without a reference during lifting and lowering. The sliding engagement between the guide slider 52 and the guide rod 51 restricts the lateral displacement of the base frame 1, ensuring that the base frame 1 moves only along the vertical direction of the guide rod 51, thus guaranteeing the accuracy and stability of the lifting and lowering direction.

[0030] In some embodiments, the number of guide structures 5 is no less than two sets, which are evenly distributed in a circle relative to the center of the base frame 1 to provide better guidance.

[0031] In some embodiments, there are no fewer than two sets of lifting devices 2, which are evenly distributed in a circle relative to the center of the base frame 1 to provide a more stable lifting driving force.

[0032] In some embodiments, such as Figure 5 As shown, when all telescopic electric cylinders 4 are extended to bring all cover plates 3 to a horizontal position, the gap area enclosed by one end of the short bottom edge of all cover plates 3 is adapted to the housing size of the vertical axial flow pump 100.

[0033] In some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, each cover plate 3 is provided with a locking device 6, which is used to limit or open the rotational ability of the cover plate 3.

[0034] In some embodiments, such as Figure 7 As shown, the locking device 6 includes a rotating part 61, a rotating tongue structure 63, and a limiting structure 64. The rotating part 61 is disposed through the cover plate 3. The rotating tongue structure 63 is located on the back side of the cover plate 3 and is mounted on the rotating part 61. The rotating tongue structure 63 rotates with the rotation of the rotating part 61. The limiting structure 64 is disposed on the outer shell side of the vertical axial flow pump 100.

[0035] When the rotating tongue structure 63 rotates to the limiting structure 64, it restricts the downward rotation of the cover plate 3; when the rotating tongue structure 63 rotates away from the limiting structure 64, the downward rotation capability of the cover plate 3 is restored.

[0036] When the lifting device 2 lowers the base frame 1 to be flush with the surface of the mounting base 200 (e.g., the ground) of the vertical axial flow pump 100, the rotating tongue structure 63 can be rotated to the limiting structure 64 so that the rotating tongue structure 63 is mounted on the limiting structure 64. Even if the telescopic electric cylinder 4 fails, the cover plate 3 can be kept in a horizontal position under the restriction of the rotating tongue structure 63 and the limiting structure 64.

[0037] In addition, when it is necessary to fold and rotate the cover plate 3, the rotating tongue structure 63 can be rotated away to the limiting structure 64, and the base frame 1 can be raised appropriately so that the cover plate 3 can rotate smoothly.

[0038] In some embodiments, such as Figure 3 As shown, the basic frame 1 may include an upper annular plate 11, a lower annular plate 12, and a number of vertically arranged cylindrical railings 13 located between the upper annular plate 11 and the lower annular plate 12, and also includes reinforcing railings 14 that are horizontally connected to the cylindrical railings 13.

[0039] In some embodiments, the side wall of the basic frame 1 is also provided with an openable and closable access door (not shown in the figure).

[0040] The above description is only a partial embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vertical shaft pump service access cover plate apparatus, characterized by, include: The basic frame (1) encloses a cylindrical space (101) that runs vertically through the space; the cylindrical space (101) is reserved for the installation of a vertical axial flow pump (100). The lifting device (2) is fixedly installed at its bottom and connected to the base frame (1) at its top, and is used to drive the base frame (1) to lift. Multiple cover plates (3) and multiple telescopic electric cylinders (4), the cover plates (3) are in the shape of an isosceles trapezoid, the long bottom edge of each cover plate (3) is hinged to the inner edge of the upper opening of the base frame (1), the lower side of each cover plate (3) is hinged to one end of a telescopic electric cylinder (4), and the other end of the telescopic electric cylinder (4) is hinged to the side wall of the base frame (1); In this process, all the telescopic electric cylinders (4) extend to bring all the cover plates (3) into a horizontal position, and at this time, one end of the short bottom edge of all the cover plates (3) encloses a gap area; all the telescopic electric cylinders (4) retract to make all the cover plates (3) rotate downward and towards the side wall of the base frame (1).

2. The vertical shaft flow pump access door plate device according to claim 1, wherein, It also includes a guide structure (5), a set of the guide structures (5) including a guide rod (51) and at least one guide slider (52), a plurality of the guide rods (51) being vertically arranged near the base frame (1), the guide slider (52) being mounted on the base frame (1), and the guide slider (52) being slidably engaged with the guide rod (51).

3. The vertical shaft flow pump access door plate apparatus of claim 2, wherein, The number of the guide structures (5) is no less than two sets, and they are evenly distributed in a circle relative to the center of the basic frame (1).

4. The vertical shaft flow pump access door plate apparatus of claim 1, wherein, The lifting device (2) consists of no fewer than two sets, which are evenly distributed in a circle relative to the center of the basic frame (1).

5. The vertical shaft flow pump access door plate apparatus of claim 1, wherein, When all the telescopic electric cylinders (4) are extended to bring all the cover plates (3) to a horizontal position, the gap area enclosed by one end of the short bottom edge of all the cover plates (3) is adapted to the housing size of the vertical axial flow pump (100).

6. The vertical shaft flow pump access door plate apparatus of claim 5, wherein, Each of the cover plates (3) is provided with a locking device (6) for limiting or opening the rotational ability of the cover plate (3).

7. The vertical shaft flow pump access door plate apparatus of claim 6, wherein, The locking device (6) includes a rotating part (61), a rotating tongue structure (63), and a limiting structure (64). The rotating part (61) is disposed through the cover plate (3). The rotating tongue structure (63) is located on the back side of the cover plate (3) and is mounted on the rotating part (61). The rotating tongue structure (63) rotates with the rotation of the rotating part (61). The limiting structure (64) is disposed on the outer shell side of the vertical axial flow pump (100). When the rotating tongue structure (63) rotates to the limiting structure (64), it restricts the downward rotation of the cover plate (3); when the rotating tongue structure (63) rotates away from the limiting structure (64), the downward rotation capability of the cover plate (3) is restored.

8. The vertical shaft flow pump access door plate apparatus of claim 1, wherein, The basic frame (1) includes an upper ring plate (11), a lower ring plate (12), and a plurality of vertically arranged cylindrical railings (13) located between the upper ring plate (11) and the lower ring plate (12), and also includes reinforcing railings (14) that are horizontally connected to the cylindrical railings (13).

9. The maintenance port cover device for a vertical axial flow pump according to claim 8, characterized in that, The basic frame (1) is also provided with an openable and closable maintenance door on its side wall.

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