Auxiliary lifting device

Abstract

The utility model relates to an auxiliary lifting device which comprises a supporting assembly, an end plate and a nesting assembly. One end of the supporting assembly is movably connected to the end plate, the other end of the supporting assembly horizontally penetrates through the upper end face of the access hole, the nesting assembly is arranged on the supporting assembly in a sleeving mode so as to be fixedly connected with the top of a to-be-lifted piece, and the to-be-lifted piece can be lifted or descended or temporarily fixed through opening or closing of the supporting assembly; the end plate, the supporting assembly and the nesting assembly are all located on the upper end face of the access hole and share the same center line. The lifting device has the advantages that the problem that the water pump is difficult to lift is solved, and quick lifting can be achieved by matching with an existing lifting device.

Description

Technical Field

[0001] The utility model relates to the technical field of the installation of a coupled submersible pump, in particular to an auxiliary lifting device. Background Art

[0002] Submersible sewage pumps are mainly used in municipal engineering, building construction, industrial sewage discharge and sewage treatment occasions to pump sewage, wastewater and rainwater containing solids and long fibers. Submersible sewage pumps are the abbreviations of submersible sewage pumps. On the basis of submersible pumps, the channels adopt anti-blocking designs and are used for primary lifting, intermediate lifting and sludge reflux, etc. Coupled submersible pumps are widely used because of the application of their self-coupling devices and their fast installation and simple structure.

[0003] Due to long-term operation underwater, coupled submersible pumps have a high failure rate and need to be frequently repaired and maintained. All along, the repair of coupled submersible pumps has been relatively difficult, which is mainly manifested in the following aspects. First, due to the large weight of the coupled submersible pump itself, when repairing, it is necessary to use a lifting device, a chain and a guide rod to jointly lift / drop the pump. At present, there is a lack of a self-locking device at any position of the guide rod of the coupled submersible sewage pump. Therefore, it is necessary to temporarily fix the chain with the help of equipment such as crowbars and steel pipes to fix the pump. Second, due to the large diving depth of the pump (5 - 10 m) and the single effective lifting height of the lifting device being about 1.5 meters, it is necessary to lift the pump several times or even dozens of times to lift the pump to the maintenance port. Third, generally speaking, the lifting device is arranged directly above the pump. The pump lifted to the maintenance port needs to be dragged to the solid ground beside by manpower for maintenance, with low safety and difficult operation. Therefore, realizing the simple and effective lifting of coupled submersible pumps is an objective that must be achieved currently. Summary of the Utility Model

[0004] The utility model aims at the technical problems existing in the prior art and provides an auxiliary lifting device, which has a simple structure, is convenient for disassembly and assembly, and saves manpower and material resources.

[0005] The technical solution for the utility model to solve the above technical problems is as follows: an auxiliary lifting device, comprising a support assembly, an end head plate member and a nested assembly;

[0006] One end of the support assembly is movably connected to the end head plate member, and the other end horizontally passes through the upper end surface of the maintenance port. The nested assembly is sleeved on the support assembly to be fixedly connected to the top of the piece to be lifted. The piece to be lifted is lifted / lowered or temporarily fixed by opening or closing the support assembly;

[0007] Wherein, the end head plate member, the support assembly and the nested assembly are all located on the upper end surface of the maintenance port and share the same center line.

[0008] As a further technical solution, the support assembly includes two clamping balls, two long rods, and a locking piece; one clamping ball is fixedly connected to one of the long rods, and the two long rods are locked or separated by the locking piece, so that the part to be lifted is temporarily fixed or in a lifting / lowering state;

[0009] Among them, the locking ball is movably clamped in the locking groove of the end plate, and the end of the long rod facing away from the locking ball passes through the nesting component and is horizontally placed on the upper end surface of the inspection port. The nesting component is located between the locking piece and the long rod, and the horizontal opening angle of the two long rods is controlled by the nesting component.

[0010] As a further technical solution, the locking member includes two short rods, one short rod is vertically connected to one of the long rods, and the two short rods are arranged facing each other;

[0011] Wherein, the two long rods are provided with slots for fitting and plugging with the short rods on the opposite sides, so that the two short rods are in a stacked state when plugged in to temporarily fix the part to be lifted.

[0012] As a further technical solution, the nesting assembly includes two ear plates and a nesting ring connecting the two ear plates; the ear plates are provided with strip grooves along their length direction for the long rods to pass through, one ear plate corresponds to one long rod, and the long rod slides on the strip groove to control the opening angle between the two long rods;

[0013] Wherein, a partition is provided in the nested ring for supporting the top end of the guide rod on the part to be lifted, so that the part to be lifted can be slidably connected along the length direction of the guide rod under the action of the partition during the rising and falling process.

[0014] As a further technical solution, the ear plate is further provided with two symmetrically arranged bayonet holes, which are located at both ends of the strip-shaped groove in the length direction and are connected thereto, and are used to adapt and clamp the long rod;

[0015] Wherein, the bottom end surface of the bayonet is located below the bottom end surface of the strip groove.

[0016] As a further technical solution, the distance between the two bayonet holes on the ear plate is such that the horizontal angle corresponding to the rotation of the long rod is 35-45°.

[0017] As a further technical solution, the partition is horizontally adapted in the nested ring.

[0018] As a further technical solution, the clamping groove is opened along the height direction of the end plate and is symmetrically arranged on both sides of the longitudinal center line of the end plate.

[0019] The beneficial effects of the utility model are:

[0020] 1. The problem of difficult lifting of the water pump is solved, and rapid lifting can be achieved in cooperation with the existing lifting device.

[0021] 2. The structure is simple, and disassembly and assembly can be quickly realized. Only 1-2 sets of the device of the present utility model are configured in a single sewage treatment plant to meet the operation requirements of the entire plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a partial structural schematic diagram of the auxiliary lifting device of the present utility model in the use state, wherein it is the state when temporarily fixing the piece to be lifted.

[0023] Figure 2 It is a partial structural schematic diagram of the auxiliary lifting device of the present utility model in the use state, wherein it is the state when lifting / lowering the piece to be lifted.

[0024] Figure 3 It is a structural schematic diagram of the ear plate in the present utility model.

[0025] Figure 4 It is a schematic diagram of the opening angle of the long rod on the ear plate in the present utility model, wherein the angle indicating that the long rod moves from one side to the direction shown by the arrow is α.

[0026] Figure 5 、 Figure 6 They are partial longitudinal sectional views when short rods are connected to two long rods respectively.

[0027] Figure 7 It is a top view structural schematic diagram of the nested ring.

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] Support assembly 1, clamping ball 11, long rod 12, slot 121, locking fastener 13, short rod 131;

[0030] End head plate member 2, card slot 21;

[0031] Nested assembly 3, ear plate 31, strip-shaped groove 311, bayonet 312, nested ring 32, partition plate 321;

[0032] Guide rod 4, guide chain 5. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0034] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0035] In the description of the present application, the term "for example" is used to mean "serving as an example, illustration, or explanation". Any embodiment described as "for example" in the present application is not necessarily construed as being more preferred or having more advantages than other embodiments. In order to enable any person skilled in the art to implement and use the present utility model, the following description is given. In the following description, details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that the present utility model can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present utility model with unnecessary details. Therefore, the present utility model is not intended to be limited to the embodiments shown, but is consistent with the broadest scope that conforms to the principles and features disclosed in the present application.

[0036] To facilitate, quickly, and safely lift / drop or facilitate maintenance operations of the coupled submersible pump at the maintenance opening, the present embodiment provides an auxiliary lifting device, including a support assembly 1, an end plate member 2, and a nesting assembly 3; one end of the support assembly 1 is movably connected to the end plate member 2, and the other end horizontally passes through the upper end surface of the maintenance opening, so that the support assembly 1 uses the end plate member 2 as a fixed side for the lifting and lowering operations of the piece to be lifted (see Figure 2 ), and the support assembly 1 and the end plate member 2 are always located on the upper end surface of the maintenance opening for convenient operation. The nesting assembly 3 is sleeved on the support assembly 1 to be fixedly connected to the top of the piece to be lifted, and the piece to be lifted is lifted / lowered or temporarily fixed by opening or closing the support assembly 1 (see Figure 1 、 Figure 2 ); during this process, the support assembly 1 uses the end plate member 2 as a fixed side, and the guide rod 4 of the piece to be lifted is inserted into the nesting assembly 3. On the one hand, the coupled submersible pump is hooked by the guide chain 5 on the crane, and on the other hand, the coupled submersible pump is slidably connected up and down along the guide rod 4, so that the coupled submersible pump always slides up and down along the guide rod 4 during the lifting or lowering process by the crane. Therefore, the guide rod 4 here has a guiding function under the action of the nesting assembly 3; for the force to be evenly distributed during the hoisting process, the end plate member 2, the support assembly 1, and the nesting assembly 3 are all located on the upper end surface of the maintenance opening and share the same center line.

[0037] The member to be lifted in this embodiment is, for example, a coupled submersible pump or other water pump.

[0038] In the specific implementation process, see Figure 1 , Figure 2 , Figure 4 The support assembly 1 includes two locking balls 11, two long rods 12, and a locking piece 13; one of the locking balls 11 is fixedly connected to one of the long rods 12, and the two long rods 12 are locked or separated by the locking piece 13, so that the part to be lifted is temporarily fixed or in a lifting / lowering state; when the part to be lifted needs to be lifted or lowered, the locking piece 13 is in an open state, and the two long rods 12 are in a horizontally opened state; wherein the locking ball 11 is movably locked in the slot of the end plate 2 21, the end of the long rod 12 facing away from the card ball 11 passes through the nesting component 3 and is horizontally placed on the upper end surface of the inspection port, and the nesting component 3 is located between the locking member 13 and the long rod 12. The horizontal opening angle of the two long rods 12 is controlled by the nesting component 3. During this process, in order to realize the rotation of the two long rods 12 in a horizontal state, the card slot 21 is a cylindrical slot with a diameter slightly larger than the card ball 11, and this side will face the part to be lifted, the guide rod 4, and the nesting component 3.

[0039] For example, in this process, the length of the long rod 12 can be determined according to the length of the inspection port, and ensure that in different working states, the length of the long rod 12 can be erected on the outer edge of the inspection port and ensure a safe stress-bearing length, preferably always exceeding the outer edge of the inspection port by 30 cm.

[0040] For example, the slots 21 are opened along the height direction of the end plate 2 and are symmetrically arranged on both sides of the longitudinal center line of the end plate 2. The end plate 2 can be a plate-like structure, and the materials of the end plate 2, the support assembly 1, and the nesting assembly 3 all have sufficient rigidity, and the bearing capacity they have in different working states matches the weight of the part to be lifted (such as a coupled submersible pump).

[0041] For more details, see Figure 2 , Figure 5 , Figure 6, the locking fastener 13 includes two short rods 131. One short rod 131 is vertically connected to one of the long rods 12 correspondingly, and the two short rods 131 are arranged facing each other. Among them, slots 121 for fitting and inserting the short rods 131 on the opposite side are formed on both of the two long rods 12, so that when the two short rods 131 are inserted, they are in a stacked state to temporarily fix the component to be lifted. At this time, the two short rods 131 are stressed simultaneously, improving the overall safety. When it is necessary to temporarily fix the component to be lifted, rotate the long rod 12, so that the two short rods 131 are separated under the rotation action of their respective long rods 12, that is, the short rod 131 is separated from its corresponding slot 121. A suitable length of the chain block chain 5 with the component to be lifted suspended is sleeved on the two short rods 131 according to actual needs, and then the two short rods 131 are inserted into their respective corresponding slots 121, that is, the locking of the locking fastener 13 is completed, and at the same time, the temporary fixing of the component to be lifted is completed. At this time, the component to be lifted (such as a water pump) under the chain block chain 5 remains stationary under its pulling force, and the short rod 131 and the long rod 12 provide pulling force for the component to be lifted; the support assembly 1 at this time can also be used as a maintenance platform, without pulling the component to be lifted to other empty areas for maintenance.

[0042] For example, the long rod 12, the short rod 131, and the ball 11 are integrally cast, ensuring stiffness and load-bearing capacity.

[0043] For example, to make the structure of the two short rods 131 stable when locked, the longitudinal section of the short rod 131 is configured as a semi-circle. Therefore, the arc of the semi-circle of one of the two short rods 131 faces upward, and the arc of the semi-circle of the other short rod 131 faces downward, so that the longitudinal section formed when the two short rods 131 are stacked is circular.

[0044] In the specific implementation process, the nested assembly 3 includes two ear plates 31 and a nested ring 32 connecting the two ear plates 31. The ear plates 31 and the nested ring 32 are integrally formed or welded; a strip-shaped slot 311 through which the long rod 12 passes is formed on the ear plate 31 along its length direction. One ear plate 31 corresponds to one long rod 12, and the opening angle between the two long rods 12 is controlled by sliding the long rod 12 on the strip-shaped slot 311.

[0045] For example, the height of the strip-shaped slot 311 is slightly larger than the diameter of the long rod 12, so that after the long rod 12 passes through the strip-shaped slot 311, it can slide left and right along the strip-shaped slot 311 to change the opening angle between the two long rods 12.

[0046] For example, the nesting ring 32 can be directly sleeved on the guide rod 4. Generally, the guide rod 4 of the coupling submersible pump has an outer diameter of 73mm and a thickness of 3mm. Therefore, the inner diameter of the nesting ring 32 can be selected to be 80-90mm, which can ensure that the nesting is firm and can also be easily disassembled. Generally, in order to facilitate the placement of the inspection port cover of the coupling submersible pump, the guide rod 4 is slightly lower than the top elevation of the inspection port. In view of this, see Figure 7 The nested ring 32 is provided with a partition 321 for supporting the top of the guide rod 4, so that the lifting member can slide and connect along the length direction of the guide rod 4 under the action of the partition 321 during the rising and falling process, which can ensure that the support assembly 1 is evenly stressed. The device can realize the rapid disassembly and assembly on the guide rod 4 and the inspection port of the coupled submersible pump, and can determine the short rod 131 to pass through the guide chain 5 by adjusting the position of the end plate 2, so as to realize the rapid lifting, inspection or bottoming work of the coupled submersible pump in different working states. More specifically, the nested ring 32 is made of metal; the partition 321 is horizontally adapted and arranged in the nested ring 32.

[0047] More specifically, see Figure 3 The ear plate 31 is also provided with two symmetrically arranged bayonet holes 312, which are located at both ends of the strip groove 311 in the length direction and are connected thereto, and are used to adapt and clamp the long rod 12; wherein, the bottom end surface of the bayonet hole 312 is located below the bottom end surface of the strip groove 311, so that the long rod 12 remains stable in different working states.

[0048] More specifically, see Figure 4 The distance between the two bayonet holes 312 on the ear plate 31 is such that the horizontal angle α corresponding to the rotation of the long rod 12 is 35-45°. At the same time, the horizontal rotation range of each long rod 12 should still be able to ensure the horizontal rotation range after adjusting the spatial relative positions of the short rod 131 and the guide chain 5.

[0049] For example, the distance between the two card slots 21 on the end plate 2 is equal to the distance between the innermost card slots 312 on the two ear plates 31, that is, at this time, the two long rods 12 are parallel and in a locked state. In the working state, the card ball 11 can rotate freely up and down, left and right in the card slot 21, but in the use scenario of the utility model, the card ball 11 needs to rotate horizontally. In order to ensure that the card ball 11 can rotate freely up and down, left and right, a lubricant such as butter can be frequently applied in the card slot 21.

[0050] In this embodiment, the support assembly 1 has two working states. Working state 1 (see Figure 2)For the lifting state of the part to be lifted, in this state, the two long rods 12 will rotate horizontally outward along the strip groove 311 to move into the outermost bayonet 312 of the ear plate 31 (i.e., the bayonet 312 on the side away from the other ear plate 31). At this time, the part to be lifted can be lifted upward by the guide chain 5 (the lower part of the guide chain 5 hooks the part to be lifted). Working state two (see Figure 1 )For the part to be lifted in a temporarily fixed state, at this time the two long rods 12 will move horizontally inward along the strip groove 311 to the innermost bayonet 312 (i.e., the two bayonets 312 on the two ear plates 31 close to each other). At this time, the distance between the end plate part 2 and the guide rod 4 can be adjusted to ensure that the short rod 131 is stuck in the guide chain 5. At this time, the guide chain 5 can be locked and fixed by relying on the auxiliary device of the present invention, and then the part above the locked guide chain 5 can be loosened or the lifting equipment can be lowered to perform the next round of lifting / falling to the bottom work.

[0051] In this embodiment, the installation sequence of the end plate part 2, the support assembly 1, and the nested assembly 3 is as follows: first, the short rod 131 in the support assembly 1 is placed parallel and stuck in the bayonet 312. Then, the two long rods 12 pass through the strip groove 311 of the ear plate 31. At the same time, the ball 11 is placed from the upper part of the card slot 21. After all parts are firmly nested, the nested ring 32 is sleeved on the top of the guide rod 4. The disassembly sequence of the device after work is opposite to the installation sequence.

[0052] In summary, the structure of the present invention can solve the problem of difficult lifting of the water pump and can cooperate with the existing lifting device to achieve rapid lifting operation. In addition, the structure of the present invention is simple, easy to disassemble and assemble. It is only necessary to configure 1-2 sets in a single sewage treatment plant to meet the operation requirements of the entire plant, and can quickly lift the water pump, saving manpower and material resources, and is suitable for popularization.

[0053] It should be noted that in the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0054] Although the preferred embodiments of the present invention have been described, once those skilled in the art learn the basic creative concept, they can make additional changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0055] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. An auxiliary lifting device, characterized in that: It comprises a supporting component (1), an end plate (2), and a nesting component (3); One end of the support component (1) is movably connected to the end plate (2), and the other end horizontally passes through the upper end surface of the inspection port. The nesting component (3) is sleeved on the support component (1) to be fixedly connected to the top of the part to be lifted. The support component (1) is opened or closed to lift, lower or temporarily fix the part to be lifted. Wherein, the end plate (2), the support assembly (1), and the nesting assembly (3) are all located on the upper end surface of the inspection opening and share a common center line.

2. The auxiliary lifting device according to claim 1, characterized in that: The support assembly (1) comprises two locking balls (11), two long rods (12), and a locking member (13); one of the locking balls (11) is fixedly connected to one of the long rods (12), and the two long rods (12) are locked or separated by the locking member (13), so that the part to be lifted is temporarily fixed or in a lifting / lowering state; The locking ball (11) is movably locked in the locking groove of the end plate (2); the end of the long rod (12) facing away from the locking ball (11) passes through the nesting component (3) and is horizontally placed on the upper end surface of the inspection port; the nesting component (3) is located between the locking component (13) and the long rod (12); and the horizontal opening angle of the two long rods (12) is controlled by the nesting component (3).

3. The auxiliary lifting device according to claim 2, characterized in that: The locking member (13) comprises two short rods (131), one short rod (131) is vertically connected to one of the long rods (12), and the two short rods (131) are arranged facing each other; Wherein, the two long rods (12) are each provided with a slot (121) for fitting and plugging with the short rod (131) on the opposite side, so that the two short rods (131) are in a stacked state when plugged in to temporarily fix the object to be lifted.

4. The auxiliary lifting device according to claim 2, characterized in that: The nesting assembly (3) comprises two ear plates (31) and a nesting ring (32) connecting the two ear plates (31); a strip groove (311) is provided on the ear plate (31) along its length direction for the long rod (12) to pass through; one ear plate (31) corresponds to one long rod (12), and the long rod (12) slides on the strip groove (311) to control the opening angle between the two long rods (12); Wherein, a partition (321) is provided in the nested ring (32) for supporting the top end of the guide rod on the part to be lifted, so that the part to be lifted can be slidably connected along the length direction of the guide rod under the action of the partition (321) during the process of rising and falling.

5. The auxiliary lifting device according to claim 4, characterized in that: The ear plate (31) is also provided with two symmetrically arranged bayonet holes (312), which are located at both ends of the strip groove (311) in the length direction and are connected thereto, and are used to fit and clamp the long rod (12); Wherein, the bottom end surface of the bayonet (312) is located below the bottom end surface of the strip-shaped groove (311).

6. The auxiliary lifting device according to claim 5, characterized in that: The distance between the two bayonet holes (312) on the ear plate (31) is such that the horizontal angle α corresponding to the rotation of the long rod (12) is 35-45°.

7. The auxiliary lifting device according to claim 4, characterized in that: The partition (321) is horizontally adapted to be disposed inside the nested ring (32).

8. The auxiliary lifting device according to claim 2, characterized in that: The clamping groove is opened along the height direction of the end plate (2) and is symmetrically arranged on both sides of the longitudinal center line of the end plate (2).

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