A vertical pump automatic centering device and lifting system

Abstract

The embodiment of the present invention provides an automatic centering device and a hoisting system for a vertical pump, and relates to the field of hoisting technology. The automatic centering device and the hoisting system for a vertical pump include an annular tube, a plurality of rotating sleeves, a plurality of positioning rods, and a plurality of limiting components; the annular tube is used to connect with an external fixed object; a plurality of rotating sleeves are arranged along the circumference of the annular tube, and are simultaneously sleeved and rotatably connected to the annular tube; a plurality of positioning rods are arranged on a plurality of rotating sleeves in a one-to-one correspondence, and are all used to abut against the outer side wall of the vertical pump; a plurality of limiting components are connected to the rotating sleeves in a one-to-one correspondence, and are all used to make the corresponding positioning rods abut against the outer side wall of the vertical pump during the process of hoisting the vertical pump into or out of the annular tube, which can improve the centering effect of the vertical pump.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting, and in particular to an automatic centering device for a vertical pump and a hoisting system. Background Art

[0002] As a device for transporting liquid in a water pool, a vertical pump is mainly installed in a concrete foundation hole provided in the water pool. Currently, the vertical pump is mainly lifted out or removed directly by various lifting equipment.

[0003] When aligning a vertical pump, the pump casing is mainly touched by manpower, and the lifting technology is relatively crude, resulting in a poor alignment effect of the vertical pump. Summary of the invention

[0004] The objectives of the present invention include, for example, providing an automatic centering device for a vertical pump, which can improve the centering effect of the vertical pump.

[0005] The present invention also aims to provide a lifting system which can improve the centering effect of a vertical pump.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] An embodiment of the present invention provides a vertical pump automatic centering device, which includes an annular tube, a plurality of rotating sleeves, a plurality of positioning rods and a plurality of limiting components;

[0008] The annular tube is used to be connected to an external fixture;

[0009] A plurality of rotating sleeves are arranged along the circumference of the annular tube, and are simultaneously sleeved and rotatably connected to the annular tube;

[0010] The plurality of positioning rods are arranged on the plurality of rotating sleeves in a one-to-one correspondence, and are all used to abut against the outer side wall of the vertical pump;

[0011] The plurality of limit assemblies are connected to the rotating sleeve in a one-to-one correspondence, and are used to make the corresponding positioning rods abut against the outer side wall of the vertical pump when the vertical pump is hoisted into or out of the annular pipe.

[0012] Optionally, it further includes a panel, and the limiting assembly includes a limiting rod, a spring and a limiter;

[0013] The enclosure plate is connected to the annular tube;

[0014] The limiter is arranged on the enclosure plate, one end of the spring is connected to the limiter, and the limit rod is connected between the rotating sleeve and the other end of the spring.

[0015] Optionally, the limiter includes a U-shaped plate, the U-shaped plate is arranged on the enclosure plate and forms a receiving groove with the enclosure plate, and the spring is connected to the receiving groove.

[0016] Optionally, an edge is provided at one end of the positioning rod away from the rotating sleeve, and the edge is used to abut against an outer side wall of the vertical pump.

[0017] Optionally, the positioning rod is provided with an arc surface, and the arc surface is used to abut against the bearing seat of the vertical pump.

[0018] Optionally, a bearing is provided in the rotating sleeve, and the bearing sleeve is arranged on the annular tube.

[0019] Optionally, a plurality of annular tube bases are provided on the annular tube, and the annular tube bases are used to be connected to the external fixing object.

[0020] Optionally, a sleeve is provided on the annular tube base, and the sleeve is fixedly connected to the annular tube.

[0021] Optionally, the inner diameter of the annular tube is larger than the outer diameter of the bearing seat of the vertical pump.

[0022] An embodiment of the present invention further provides a hoisting system, comprising a lifting device and the above-mentioned vertical pump automatic centering device, wherein the lifting device is used to lift the vertical pump into or out of the annular pipe.

[0023] The beneficial effects of the automatic centering device and lifting system of the vertical pump of the embodiment of the present invention include, for example: when the vertical pump is hoisted into or out of the annular pipe, the positioning rod will abut against the outer wall of the vertical pump or the bearing seat of the vertical pump; when the positioning rod abuts against the bearing seat of the vertical pump, the positioning rod and the rotating sleeve will rotate accordingly, and when the positioning rod is released from the abutment with the bearing seat of the vertical pump, under the action of the limit assembly, the rotating sleeve is driven to rotate until the positioning rod abuts against the outer wall of the vertical pump. In this process, multiple positioning rods arranged circumferentially abut against the outer wall of the vertical pump at the same time, thereby centering the vertical pump and improving the centering effect of the vertical pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram from a first perspective of the automatic centering device for a vertical pump in an embodiment of the present application;

[0026] Figure 2 It is a schematic diagram of a second viewing angle of the automatic centering device for a vertical pump in an embodiment of the present application;

[0027] Figure 3 This is a schematic diagram of the structure of the limit assembly in the embodiment of the present application;

[0028] Figure 4 It is a schematic diagram for illustrating the connection relationship between the positioning rod, the rotating sleeve and the limiting rod in the embodiment of the present application.

[0029] Icons: 10-vertical pump automatic centering device; 100-annular tube; 110-annular tube base; 120-casing; 130-base plate; 200-rotating sleeve; 300-positioning rod; 310-edge; 320-arc surface; 400-limiting assembly; 410-limiting rod; 420-spring; 430-limiter; 431-top plate; 432-side plate; 500-enclosure; 600-fixed connecting pipe; 700-vertical pump; 710-pump body; 720-bearing seat. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0035] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0036] The inventors of the present application have discovered that the existing method of hoisting vertical pumps has the following defects: First, due to the narrow concrete foundation hole, the shaking caused by hoisting the vertical pump can easily cause the pump unit to collide with the edge of the foundation hole, causing damage to the pump body and the foundation hole. Second, when the pump unit is hoisted in the hole, because the pump body has multiple bearing seats, if the deviation between the center of the pump body and the center of the foundation hole is too large, the pump body bearing seat and the foundation hole will touch each other, and even cause hoisting overload. In severe cases, it may cause the wire rope to break, causing a major safety accident. Third, when installing the pump unit, manpower is used to touch the pump body casing to implement forced centering. The operator needs to stand under the pump body throughout the whole process, which is contrary to the hoisting safety regulations and poses a major safety hazard. Fourth, when lifting the pump unit, only one end of the pump head can be used as the lifting point for tilted lifting. Therefore, after lifting, the entire pump body is tilted. When placing it into the lifting hole, the lifting position of the lifting equipment must be adjusted in real time to ensure that the lifting point is consistent with the center position of the lifting hole. This results in low lifting efficiency and high requirements on the technical level of the lifting personnel. If there is a slight deviation, the pump body will touch the bottom and hang in the air, resulting in unhooking and causing a lifting accident.

[0037] This embodiment provides a vertical pump automatic centering device 10 for solving the above-mentioned technical problems.

[0038] Please refer to Figure 1-Figure 3 The vertical pump automatic centering device 10 provided in this embodiment includes an annular tube 100, a plurality of rotating sleeves 200, a plurality of positioning rods 300 and a plurality of limiting assemblies 400; the annular tube 100 is used to be connected to an external fixed object; the plurality of rotating sleeves 200 are arranged along the circumference of the annular tube 100, and are simultaneously sleeved and rotatably connected to the annular tube 100; the plurality of positioning rods 300 are arranged on the plurality of rotating sleeves 200 in a one-to-one correspondence, and are all used to abut against the outer side wall of the vertical pump 700; the plurality of limiting assemblies 400 are connected to the rotating sleeves 200 in a one-to-one correspondence, and are all used to make the corresponding positioning rods 300 abut against the outer side wall of the vertical pump 700 during the process of the vertical pump 700 being hoisted into or hoisted out of the annular tube 100.

[0039] It should be pointed out that the vertical pump 700 includes a multi-section pump body 710 and a plurality of bearing seats 720, and a bearing seat 720 is arranged between two sections of the pump body 710; the pump body 710 is roughly cylindrical, and the bearing seat 720 is a circular ring-shaped bearing seat 720, which is arranged on the outer wall of the pump body 710, and the central axis of the bearing seat 720 coincides with the central axis of the pump body 710, and the outer diameter of the bearing seat 720 is larger than the outer diameter of the pump body 710; the inner diameter of the annular tube 100 is larger than the outer diameter of the bearing seat 720, so that the vertical pump 700 can be smoothly hoisted into the annular tube 100 or hoisted out of the annular tube 100; the annular tube 100 can be fixed on the ground or other external fixed objects, and the annular tube 100 is arranged at a position that coincides with the central axis of the concrete foundation hole for accommodating the vertical pump 700. The annular tube 100 is roughly annular, and the end face shape of the annular tube 100 is circular. Multiple rotating sleeves 200 are evenly spaced and sleeved on the annular tube 100, and each rotating sleeve 200 is rotatably connected to the annular tube 100. For example, a bearing (not shown in the figure) is arranged in each rotating sleeve 200, and the bearing and the annular tube 100 are rotatably matched. The bearing can be a double-row roller bearing to improve the bearing capacity of the bearing; multiple positioning rods 300 are arranged at an angle to form a conical mounting position, one end of the positioning rod 300 is connected to the corresponding rotating sleeve 200, and the other end of the positioning rod 300 is used to abut against the outer wall of the pump body 710.

[0040] When the vertical pump 700 is hoisted into or out of the annular tube 100, the positioning rod 300 will abut against the outer wall of the pump body 710 or the bearing seat 720; when the positioning rod 300 abuts against the bearing seat 720, the positioning rod 300 and the rotating sleeve 200 will rotate accordingly, and when the positioning rod 300 is released from the abutment with the bearing seat 720, the rotating sleeve 200 is driven to rotate under the action of the limiting assembly 400 until the positioning rod 300 abuts against the outer wall of the pump body 710. During this process, the multiple positioning rods 300 arranged circumferentially are simultaneously in contact with the outer wall of the pump body 710, thereby centering the vertical pump 700. During the hoisting process, the vertical pump 700 is not easy to shake, which reduces the damage to the concrete foundation hole. The bearing seat 720 and the foundation hole are also not easy to touch each other, which effectively avoids the occurrence of safety accidents. At the same time, there is no need for operators to stand under the pump body 710 for observation throughout the process, which improves the centering effect and hoisting efficiency of the vertical pump 700.

[0041] In addition, the vertical pump automatic centering device 10 also includes a surrounding plate 500, and the limit assembly 400 includes a limit rod 410, a spring 420 and a limiter 430; the surrounding plate 500 is connected to the annular tube 100; the limiter 430 is arranged on the surrounding plate 500, one end of the spring 420 is connected to the limiter 430, and the limit rod 410 is connected between the rotating sleeve 200 and the other end of the spring 420.

[0042] In this embodiment, the enclosure 500 is an annular enclosure 500, which coincides with the central axis of the annular tube 100. The enclosure 500 is arranged around the outside of the annular tube 100, and a plurality of fixed connecting tubes 600 are arranged between the enclosure 500 and the annular tube 100. The enclosure 500 and the annular tube 100 are connected through the plurality of fixed connecting tubes 600; the two ends of the spring 420 are respectively connected to the limiter 430 and the corresponding rotating sleeve 200.

[0043] Optionally, the spring 420 is a high-strength cylindrical high-compression spring 420, and the spring 420 is subjected to strong pressing or shot peening treatment after being manufactured to improve its load-bearing capacity and tensile strength.

[0044] During the process of the positioning rod 300 abutting against the bearing seat 720, the positioning rod 300 and the rotating sleeve 200 will rotate accordingly, and the rotating sleeve 200 rotates to drive the limiting rod 410 to move, and the limiting rod 410 applies a pulling force to the spring 420, and the spring 420 stretches; and after the positioning rod 300 and the bearing seat 720 are released from abutment, the spring 420 recovers its deformation, driving the limiting rod 410, the rotating sleeve 200 and the positioning rod 300 to reset, until the positioning rod 300 abuts against the outer wall of the pump body 710 again. The setting of the limiting assembly 400 can make the positioning rod 300 always abut against the vertical pump 700, thereby improving the centering effect of the vertical pump 700.

[0045] Optionally, the limiter 430 includes a U-shaped plate, which is disposed on the enclosure 500 and forms a receiving groove with the enclosure 500, and the spring 420 is connected to the receiving groove.

[0046] It should be pointed out that the U-shaped plate includes a top plate 431 and two opposite side plates 432, the top plate 431 is connected between the two side plates 432, and the top plate 431 and the side plates 432 are both fixedly arranged on the inner wall of the enclosure 500, one end of the spring 420 is located in the receiving groove and is connected to the enclosure 500, and the receiving groove can limit the spring 420, thereby providing a certain degree of protection for the spring 420.

[0047] When the vertical pump 700 is hoisted into the annular tube 100, the bearing seat 720 presses down the positioning rod 300 when it contacts with the positioning rod 300, the rotating sleeve 200 rotates forward, and the limiting rod 410 swings upward. At this time, the top plate 431 can block the limiting rod 410 to prevent the limiting rod 410 from rotating excessively. When the vertical pump 700 is hoisted out of the annular tube 100, the bearing seat 720 pushes up the positioning rod 300 when it contacts with the positioning rod 300, the rotating sleeve 200 rotates in the opposite direction, and the limiting rod 410 swings downward. At this time, due to the large rotation angle of the positioning rod 300, the limiting rod 410 will move out from the opening of the U-shaped plate to prevent the limiting rod 410 from being stuck in the receiving groove and causing damage to the limiting rod 410.

[0048] For further information, see Figure 4 The end of the positioning rod 300 away from the rotating sleeve 200 is provided with an edge 310, and the edge 310 is used to abut against the outer wall of the vertical pump 700. The positioning rod 300 is provided with an arc surface 320, and the arc surface 320 is used to abut against the bearing seat 720 of the vertical pump 700.

[0049] It should be pointed out that the edge 310 protrudes from the surface of the positioning rod 300 facing the pump body 710 so as to abut against the outer wall of the pump body 710, and the contact stability between the positioning rod 300 and the outer wall of the pump body 710 is better; the surface of the positioning rod 300 facing the pump body 710 between the edge 310 and the rotating sleeve 200 is the above-mentioned arc surface 320, and the arc surface 320 is used to abut against the bearing seat 720. By utilizing the arc surface 320 to abut against the bearing seat 720, a smooth transition can be achieved in the process of switching between the positioning rod 300 abutting against the pump body 710 and the bearing seat 720 respectively, thereby improving the stability of the alignment.

[0050] When the bearing seat 720 abuts against the positioning rod 300, it first abuts against the arc surface 320 of the positioning rod 300. The arc surface 320 can also reduce the wear between the bearing seat 720 and the positioning rod 300. Then the bearing seat 720 abuts against the edge 310 until the bearing seat 720 and the positioning rod 300 are released from abutment. Under the action of the limit assembly 400, the positioning rod 300 abuts against the outer wall of the pump body 710 again.

[0051] In addition, the annular tube 100 is provided with a plurality of annular tube bases 110 , which are used to be connected to an external fixed object. The annular tube bases 110 are provided with sleeves 120 , which are fixedly connected to the annular tube 100 .

[0052] In this embodiment, a plurality of annular tube bases 110 are evenly arranged on the annular tube 100; the annular tube base 110 is cylindrical, the sleeve 120 is connected to one end of the annular tube base 110, and a base plate 130 is arranged at the other end of the annular tube base 110, and the base plate 130 is fixed to the ground or other external fixed objects by bolts. The arrangement of the annular tube base 110 can improve the stability of the annular tube 100 and the enclosure 500, thereby improving the stability of the centering process.

[0053] This embodiment also provides a hoisting system, including a lifting device and the vertical pump automatic centering device 10, the lifting device is used to lift the vertical pump 700 into the annular pipe 100 or lift it out of the annular pipe 100. The technical effects of the hoisting system and the vertical pump automatic centering device 10 are substantially the same, and will not be repeated here.

[0054] In summary, the embodiment of the present invention provides an automatic centering device 10 and a hoisting system for a vertical pump. In the process of hoisting the vertical pump 700 into the annular pipe 100, a plurality of positioning rods 300 form a conical installation position, and the lifting equipment hoists the vertical pump 700 into a roughly conical installation position. The plurality of positioning rods 300 limit the position of the vertical pump 700, so that the vertical pump 700 can be centered. When the pump body 710 contacts the positioning rod 300, the contact portion of the positioning rod 300 is the edge 310, and when the bearing seat 720 contacts the positioning rod 300, the contact portion of the positioning rod 300 is the arc surface 320, and through the limiter 430 and the limit rod 410, under the action of the elastic force of the spring 420, the edge 310 of the positioning rod 300 contacts the next section of the pump body 710 after the positioning rod 300 is separated from the bearing seat 720, thereby ensuring the centering position. In the process of lifting the vertical pump 700 out of the annular pipe 100, the lifting point is set vertically and then the lifting begins. The edge 310 of the positioning rod 300 contacts the pump body 710. When the lifting equipment continues to rise and lifts until the bearing seat 720 abuts against the positioning rod 300, the bearing seat 720 pushes the positioning rod 300 upward until the positioning rod 300 is separated from the bearing seat 720. Under the action of the spring 420, the edge 310 of the positioning rod 300 will automatically resume contact with the pump body 710, and so on, to complete the lifting of the entire pump body 710.

[0055] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A vertical pump automatic centering device, characterized in that: It includes an annular tube, a plurality of rotating sleeves, a plurality of positioning rods and a plurality of limiting components; The annular tube is used to be connected to an external fixture; A plurality of rotating sleeves are arranged along the circumference of the annular tube, and are simultaneously sleeved and rotatably connected to the annular tube; The plurality of positioning rods are arranged on the plurality of rotating sleeves in a one-to-one correspondence, and are all used to abut against the outer side wall of the vertical pump; A plurality of the stopper assemblies are connected to the rotating sleeve in a one-to-one correspondence, and are used to make the corresponding positioning rod abut against the outer side wall of the vertical pump when the vertical pump is hoisted into or out of the annular pipe; It also includes a panel, and the limiting assembly includes a limiting rod, a spring and a limiter; The enclosure plate is connected to the annular tube; The limiter is arranged on the enclosure plate, one end of the spring is connected to the limiter, and the limit rod is connected between the rotating sleeve and the other end of the spring; The stopper comprises a U-shaped plate, the U-shaped plate is arranged on the enclosure plate and forms a receiving groove with the enclosure plate, and the spring is connected in the receiving groove; An edge is provided at one end of the positioning rod away from the rotating sleeve, and the edge is used to abut against the outer side wall of the vertical pump; The positioning rod is provided with an arc surface, and the arc surface is used to abut against the bearing seat of the vertical pump.

2. The automatic centering device for a vertical pump according to claim 1, characterized in that: A bearing is arranged in the rotating sleeve, and the bearing sleeve is arranged on the annular tube.

3. The automatic centering device for a vertical pump according to claim 1, characterized in that: A plurality of annular tube bases are arranged on the annular tube, and the annular tube bases are used to be connected with the external fixing object.

4. The automatic centering device for a vertical pump according to claim 3, characterized in that: A sleeve is arranged on the annular tube base, and the sleeve is fixedly connected to the annular tube.

5. The automatic centering device for a vertical pump according to claim 1, characterized in that: The inner diameter of the annular tube is greater than the outer diameter of the bearing seat of the vertical pump.

6. A hoisting system, characterized in that: It comprises a lifting device and the automatic centering device for a vertical pump as claimed in any one of claims 1 to 5, wherein the lifting device is used to lift the vertical pump into or out of the annular pipe.

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