A simple tool for overhauling and hoisting canned motor pump

Abstract

The utility model discloses a simple tool for overhauling and hoisting a shielded pump, including a U-shaped shackle, a connecting assembly, a grabbing assembly and an automatic clamping assembly, the connecting assembly including a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are symmetrically arranged and the upper ends are movably connected through the U-shaped shackle, the grabbing assembly includes a first arc-shaped pulling claw and a second arc-shaped pulling claw, the utility model is provided with a first arc-shaped pulling claw and a second arc-shaped pulling claw, during hoisting, the first arc-shaped pulling claw and the second arc-shaped pulling claw are adjusted to a suitable angle according to the size of the shielded pump, the bearing is arranged at the middle and upper ends of the first arc-shaped pulling claw and the second arc-shaped pulling claw, the first arc-shaped pulling claw and the second arc-shaped pulling claw are used together as a labor-saving lever, ensuring that the grasping process has a labor-saving effect, and the operation is simple. The utility model has the characteristics of strong practicality and safe and convenient operation.

Description

Technical Field

[0001] The utility model relates to the technical field of canned pump maintenance tooling, in particular to a simple tooling for canned pump maintenance and hoisting. Background Art

[0002] The canned motor pump is composed of a stator, a rotor, a bearing, and an impeller. It is a fully enclosed, shaft-seal-free (only static seals but no dynamic seals) device. Since the canned motor pump is heavy, it is difficult for personnel to carry it, and the weight of the front and rear ends of the stator is inconsistent. Generally, the lifting device shortens the lifting distance by winding it to keep the equipment level. Long-term winding and use will cause premature damage to the lifting device.

[0003] The rotor is mainly composed of rotor sleeve, silicon steel sheet, shaft, front and rear baffles and other parts. Since the rotor is a whole composed of multiple parts, the rotor rotates in the stator sleeve. The assembly gap between the stator sleeve and the rotor sleeve is generally within the range (minimum 1mm maximum 3mm). The rotor surface is particularly smooth and must not have slip marks or damage. Since the rotor is heavy, it is difficult for personnel to carry it, and general lifting equipment will cause certain damage to the rotor.

[0004] There are two types of hoists for hoisting rotors: wire rope and flat sling. The wire rope has metal and grease on its surface, which may cause certain damage to the rotor sleeve during the hoisting process. The flat sling is made of nylon, which has large shrinkage and expansion during use, and may squeeze and deform the rotor sleeve during the hoisting process, causing damage due to friction of the sling. Therefore, it is necessary to design a simple tooling for canned pump maintenance hoisting that is highly practical and safe and convenient to operate. Utility Model Content

[0005] The utility model aims to provide a simple tool for overhauling and hoisting a canned motor pump, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a simple tool for overhauling and hoisting a shielded pump, comprising a U-shaped shackle, a connecting assembly, a grabbing assembly and an automatic clamping assembly, the connecting assembly comprising a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are symmetrically arranged and the upper ends are movably connected through the U-shaped shackle, the grabbing assembly comprises a first arc-shaped claw and a second arc-shaped claw, the first arc-shaped claw and the second arc-shaped claw are cross-movably arranged and the connecting ends are movably connected through bearings, the upper end of the first arc-shaped claw and the second connecting plate are movably connected through a first positioning pin, the second arc-shaped claw and the first connecting plate are movably connected through a second positioning pin, the lower ends of the first arc-shaped claw and the second arc-shaped claw are respectively fixedly installed with a first rubber pad and a second rubber pad, and the automatic clamping assembly is arranged on the first connecting plate and the second connecting plate.

[0007] According to the above technical scheme, the automatic clamping assembly includes an arc guide plate, an arc guide groove, a placement groove, a control motor, a gear, a rack and a pressure sensor. The arc guide plate is arranged at one end of the first connecting plate adjacent to the second connecting plate, the arc guide groove is opened through the second connecting plate, the arc guide plate is movably installed in the arc guide groove, the placement groove is opened on the inner arc surface of the arc guide groove, the control motor is fixedly installed in the placement groove and the gear is fixedly installed on the output end of the control motor, the rack is embedded and fixedly installed on the inner arc surface of the arc guide plate, the gear and the rack are meshingly connected, the pressure sensor is symmetrically arranged at the opposite end of the first arc pulling claw and the second arc pulling claw, and the pressure sensor and the control motor are electrically connected through a wire.

[0008] According to the above technical solution, the outer wall surfaces of the second connecting plate and the second arc-shaped pulling claw are respectively provided with a first embedding groove and a second embedding groove, the first positioning pin and the second positioning pin are respectively embedded and installed in the first embedding groove and the second embedding groove, and the outer wall surfaces of the first positioning pin and the second positioning pin are respectively flush with the outer wall surfaces of the second connecting plate and the second arc-shaped pulling claw.

[0009] According to the above technical solution, a limiting plate is fixedly mounted on one end of the arc-shaped guide plate away from the first connecting plate, and a protective pad is fixedly mounted on one end of the limiting plate adjacent to the arc-shaped guide plate.

[0010] According to the above technical solution, a spring is fixedly installed outside the arc-shaped guide plate and between the first connecting plate and the second connecting plate, and the arc-shaped guide plate is movably installed in the first connecting plate through a movable component.

[0011] According to the above technical solution, the bearing is arranged at the middle and upper ends of the first arc-shaped pulling claw and the second arc-shaped pulling claw.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model is provided with a first arc-shaped pull claw and a second arc-shaped pull claw, and the first arc-shaped pull claw and the second arc-shaped pull claw are adjusted to a suitable angle according to the size of the shielded pump during hoisting, and the bearing is arranged at the middle and upper ends of the first arc-shaped pull claw and the second arc-shaped pull claw, and the first arc-shaped pull claw and the second arc-shaped pull claw are used together as a labor-saving lever, thereby ensuring that the grasping process has a labor-saving effect, and the operation is simple, and everyone can operate it, and the opening size can be adjusted at will, and it is suitable for shielded pumps of different specifications;

[0013] The first rubber pad and the second rubber pad are completely stuck under the shielded pump rotor, ensuring that the outer surface of the equipment is free of abnormal damage and ensuring the clamping effect of the claws. When clamping the rotor, the first arc-shaped claw and the second arc-shaped claw are placed at both ends of the rotor, and the first arc-shaped claw or the second arc-shaped claw is pressed. The pressure sensor detects a certain pressure and transmits a signal to the control motor. The control motor drives the gear to rotate, thereby driving the first arc-shaped claw and the second arc-shaped claw to automatically clamp and clamp the shielded pump rotor. The clamping force can fix the first arc-shaped claw and the second arc-shaped claw on both sides of the rotor, thereby realizing pre-grabbing of the shielded pump rotor, replacing manpower with machinery, saving time for installing slings and bundling wire ropes, and everyone can operate it, avoiding safety problems during the lifting process, and the operation is safe and convenient;

[0014] Through the coordinated use of springs and movable components, when the rotor is too heavy during the process of grabbing the rotor, the grabbing force can be automatically increased to achieve natural grabbing of the canned pump rotor, avoiding excessive grabbing force and causing damage to the canned pump rotor. The bending lengths of the first arc-shaped claw and the second arc-shaped claw are set to adapt to the cross-sectional circumference of the canned pump. The canned pump rotor can be hoisted by using the U-shaped shackle at the upper end of the crane lifting connection assembly, which improves the grabbing efficiency of the canned pump rotor, speeds up the maintenance speed of the canned pump, and has high work efficiency.

[0015] The first locating pin and the second locating pin can be respectively embedded and placed through the first embedding groove and the second embedding groove, thereby increasing the flatness and aesthetics of the outer wall surfaces of the second connecting plate and the second arc-shaped pulling claw. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the main cross-sectional view of the utility model;

[0018] Figure 2 This utility model Figure 1 The enlarged schematic diagram of point A in the middle;

[0019] Figure 3 It is a three-dimensional schematic diagram of the first connecting plate of the utility model;

[0020] Figure 4 It is a three-dimensional schematic diagram of the second connecting plate of the utility model;

[0021] Figure 5 It is a three-dimensional schematic diagram of the first arc-shaped pulling claw of the utility model;

[0022] Figure 6It is a three-dimensional schematic diagram of the second arc-shaped pulling claw of the utility model;

[0023] In the figure: 1-U-shaped shackle, 2-connecting assembly, 201-first connecting plate, 202-second connecting plate, 2021-first embedding groove, 3-grabbing assembly, 301-first arc-shaped claw, 302-second arc-shaped claw, 3021-second embedding groove, 4-automatic clamping assembly, 401-arc-shaped guide plate, 402-arc-shaped guide groove, 403-placing groove, 404-control motor, 405-gear, 406-rack, 407-pressure sensor, 5-bearing, 6-first positioning pin, 7-first positioning pin, 8-first rubber pad, 9-second rubber pad, 10-limiting plate, 11-protective pad, 12-spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-6The utility model provides a technical solution: a simple tool for overhauling and hoisting a shielded pump, comprising a U-shaped shackle 1, a connecting assembly 2, a grabbing assembly 3 and an automatic clamping assembly 4, wherein the connecting assembly 2 comprises a first connecting plate 201 and a second connecting plate 202, the first connecting plate 201 and the second connecting plate 202 are symmetrically arranged and the upper ends are movably connected through the U-shaped shackle 1, the grabbing assembly 3 comprises a first arc-shaped claw 301 and a second arc-shaped claw 302, the first arc-shaped claw 301 and the second arc-shaped claw 302 are cross-movably arranged and the connecting ends are movably connected through a bearing 5, the upper end of the first arc-shaped claw 301 and the second connecting plate 202 are movably connected through a first locating pin 6, the second arc-shaped claw 302 and the first connecting plate 201 are movably connected through a second locating pin 7, the first arc-shaped claw 301 and the second arc-shaped claw 3 02, the first rubber pad 8 and the second rubber pad 9 are fixedly installed at the lower end respectively, and the automatic clamping assembly 4 is arranged on the first connecting plate 201 and the second connecting plate 202. When the utility model is in use, the first arc-shaped claw 301 and the second arc-shaped claw 302 are adjusted to a suitable angle according to the size of the shielded pump during hoisting. The operation is simple and anyone can operate it. The opening size can be adjusted at will. The first rubber pad 8 and the second rubber pad 9 are completely stuck under the shielded pump rotor. The shielded pump rotor is clamped by the automatic clamping assembly 4 to ensure that the first arc-shaped claw 301 and the second arc-shaped claw 302 grab the shielded pump rotor. The shielded pump rotor can be hoisted by the U-shaped shackle 1 at the upper end of the crane lifting connection assembly 2, which improves the grabbing efficiency of the shielded pump rotor, speeds up the maintenance speed of the shielded pump, has high work efficiency, and saves the time of installing slings and bundling wire ropes.

[0026] Specifically, the automatic clamping assembly 4 includes an arc guide plate 401, an arc guide groove 402, a placement groove 403, a control motor 404, a gear 405, a rack 406 and a pressure sensor 407. The arc guide plate 401 is arranged at one end of the first connecting plate 201 adjacent to the second connecting plate 202, the arc guide groove 402 is opened through the second connecting plate 202, the arc guide plate 401 is movably installed in the arc guide groove 402, the placement groove 403 is opened on the inner arc surface of the arc guide groove 402, the control motor 404 is fixedly installed in the placement groove 403 and the gear 405 is fixedly installed at the output end of the control motor 404, the arc guide plate 401 is inner arc The rack 406 is fixedly mounted on the surface, the gear 405 is meshed with the rack 406, the pressure sensor 407 is symmetrically arranged at the opposite end of the first arc-shaped claw 301 and the second arc-shaped claw 302, the pressure sensor 407 is electrically connected to the control motor 404 through a wire, when clamping the rotor, the first arc-shaped claw 301 and the second arc-shaped claw 302 are placed at both ends of the rotor, the first arc-shaped claw 301 or the second arc-shaped claw 302 is pressed, the pressure sensor 407 detects a certain pressure, and transmits a signal to the control motor 404, the control motor 404 drives the gear 405 to rotate, and then drives the first arc-shaped claw 301 and the second arc-shaped claw 302 to automatically clamp, so as to clamp the rotor;

[0027] Specifically, the outer wall surfaces of the second connecting plate 202 and the second arc-shaped claw 302 are respectively provided with a first embedding groove 2021 and a second embedding groove 3021, the first positioning pin 6 and the second positioning pin 7 are respectively embedded and installed in the first embedding groove 2021 and the second embedding groove 3021, the outer wall surfaces of the first positioning pin 6 and the second positioning pin 7 are respectively flush with the outer wall surfaces of the second connecting plate 202 and the second arc-shaped claw 302, the first positioning pin 6 and the second positioning pin 7 can be respectively embedded and placed through the first embedding groove 2021 and the second embedding groove 3021, so as to increase the flatness and aesthetics of the outer wall surfaces of the second connecting plate 202 and the second arc-shaped claw 302;

[0028] Specifically, a limiting plate 10 is fixedly installed at one end of the arc-shaped guide plate 401 away from the first connecting plate 201, and a protective pad 11 is fixedly installed at one end of the limiting plate 10 adjacent to the arc-shaped guide plate 401. The limiting plate 10 can limit the arc-shaped guide plate 401, and the angle between the first connecting plate 201 and the second connecting plate 202 can be limited. The protective pad 11 plays a role of elastic protection.

[0029] Specifically, a spring 12 is fixedly installed outside the arc-shaped guide plate 401 and between the first connecting plate 201 and the second connecting plate 202. The arc-shaped guide plate 401 is movably installed in the first connecting plate 201 through a movable component. Through the coordinated use of the spring 12 and the movable component, when the rotor is too heavy during the process of grabbing the rotor, the grabbing force can be automatically increased;

[0030] Specifically, the bearing 5 is disposed at the middle and upper ends of the first arc-shaped pulling claw 301 and the second arc-shaped pulling claw 302 . The first arc-shaped pulling claw 301 and the second arc-shaped pulling claw 302 cooperate to serve as a labor-saving lever, thereby ensuring a labor-saving effect during the grasping process.

[0031] Working principle: When the utility model is used, the first arc-shaped claw 301 and the second arc-shaped claw 302 are adjusted to a suitable angle according to the size of the shielded pump during hoisting. The bearing 5 is arranged at the middle and upper ends of the first arc-shaped claw 301 and the second arc-shaped claw 302. The first arc-shaped claw 301 and the second arc-shaped claw 302 are used together as a labor-saving lever to ensure that the grasping process has a labor-saving effect. The operation is simple and everyone can operate it. The opening size can be adjusted at will. It is suitable for shielded pumps of different specifications. The first rubber liner 8 and The second rubber pad 9 is completely stuck under the shielded pump rotor, ensuring that there is no abnormal damage to the outer surface of the equipment and ensuring the clamping effect of the claw. When clamping the rotor, the first arc-shaped claw 301 and the second arc-shaped claw 302 are placed at both ends of the rotor, and the first arc-shaped claw 301 or the second arc-shaped claw 302 is pressed. The pressure sensor 407 detects a certain pressure and transmits a signal to the control motor 404. The control motor 404 drives the gear 405 to rotate, thereby driving the first arc-shaped claw 301 and the second arc-shaped claw 302 to automatically clamp. The canned pump rotor is clamped tightly, and the clamping force can fix the first arc-shaped claw 301 and the second arc-shaped claw 302 on both sides of the rotor to achieve pre-grabbing of the canned pump rotor. Through the coordinated use of the spring 12 and the movable component, when the rotor is too heavy during the rotor grabbing process, the grasping force can be automatically increased to achieve natural grasping of the canned pump rotor, thereby avoiding damage to the canned pump rotor caused by excessive grasping force. The bending length of the bending part of the first arc-shaped claw 301 and the second arc-shaped claw 302 is consistent with the cross-sectional circumference of the canned pump. The U-shaped shackle 1 at the upper end of the crane lifting connection component 2 is used to lift the shielded pump rotor, which improves the grabbing efficiency of the shielded pump rotor, speeds up the maintenance of the shielded pump, has high work efficiency, and saves time for installing slings and bundling wire ropes. The first locating pin 6 and the second locating pin 7 can be embedded and placed through the first embedding groove 2021 and the second embedding groove 3021 respectively, increasing the smoothness and beauty of the outer wall of the second connecting plate 202 and the second arc-shaped pulling claw 302. This tooling is safe, reliable, and easy to operate.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A simple tool for overhauling and hoisting a canned motor pump, comprising a U-shaped shackle (1), a connecting assembly (2), a grabbing assembly (3) and an automatic clamping assembly (4), characterized in that: The connecting assembly (2) comprises a first connecting plate (201) and a second connecting plate (202), the first connecting plate (201) and the second connecting plate (202) are symmetrically arranged and the upper ends are movably connected through the U-shaped shackle (1), the grabbing assembly (3) comprises a first arc-shaped pulling claw (301) and a second arc-shaped pulling claw (302), the first arc-shaped pulling claw (301) and the second arc-shaped pulling claw (302) are cross-movably arranged and the connecting ends are movably connected through a bearing (5), the first arc-shaped pulling claw ( The upper end of the arc-shaped claw (301) and the second connecting plate (202) are movably connected via a first positioning pin (6), the second arc-shaped claw (302) and the first connecting plate (201) are movably connected via a second positioning pin (7), the lower ends of the first arc-shaped claw (301) and the second arc-shaped claw (302) are respectively fixedly mounted with a first rubber pad (8) and a second rubber pad (9), and the automatic clamping assembly (4) is arranged on the first connecting plate (201) and the second connecting plate (202).

2. The simple tooling for overhauling and hoisting a canned motor pump according to claim 1 is characterized in that: The automatic clamping assembly (4) comprises an arc-shaped guide plate (401), an arc-shaped guide groove (402), a placement groove (403), a control motor (404), a gear (405), a rack (406) and a pressure sensor (407); the arc-shaped guide plate (401) is arranged at one end of the first connecting plate (201) adjacent to the second connecting plate (202); the arc-shaped guide groove (402) is opened through the second connecting plate (202); the arc-shaped guide plate (401) is movably installed in the arc-shaped guide groove (402); the placement groove (403) is opened in the arc-shaped guide groove (402); The guide groove (402) has an inner arc surface, the control motor (404) is fixedly installed in the placement groove (403) and the output end of the control motor (404) is fixedly installed with the gear (405), the inner arc surface of the arc guide plate (401) is inlaid with the rack (406) fixedly installed, the gear (405) and the rack (406) are meshingly connected, the pressure sensor (407) is symmetrically arranged at the opposite end of the first arc-shaped pulling claw (301) and the second arc-shaped pulling claw (302), and the pressure sensor (407) and the control motor (404) are electrically connected through a wire.

3. The simple tooling for overhauling and hoisting a canned motor pump according to claim 2 is characterized in that: The outer wall surfaces of the second connecting plate (202) and the second arc-shaped pulling claw (302) are respectively provided with a first embedding groove (2021) and a second embedding groove (3021); the first positioning pin (6) and the second positioning pin (7) are respectively embedded and installed in the first embedding groove (2021) and the second embedding groove (3021); the outer wall surfaces of the first positioning pin (6) and the second positioning pin (7) are respectively flush with the outer wall surfaces of the second connecting plate (202) and the second arc-shaped pulling claw (302).

4. The simple tooling for overhauling and hoisting a canned motor pump according to claim 3 is characterized in that: A limiting plate (10) is fixedly mounted on one end of the arc-shaped guide plate (401) away from the first connecting plate (201), and a protective pad (11) is fixedly mounted on one end of the limiting plate (10) adjacent to the arc-shaped guide plate (401).

5. The simple tooling for overhauling and hoisting a canned motor pump according to claim 4 is characterized in that: A spring (12) is fixedly installed outside the arc-shaped guide plate (401) and between the first connecting plate (201) and the second connecting plate (202); the arc-shaped guide plate (401) is movably installed inside the first connecting plate (201) via a movable component.

6. The simple tooling for overhauling and hoisting a canned motor pump according to claim 5 is characterized in that: The bearing (5) is arranged at the middle and upper ends of the first arc-shaped pulling claw (301) and the second arc-shaped pulling claw (302).

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