CN219279387U - Spiral case tensioning screw lifting device of hydroelectric engineering seat ring - Google Patents

Abstract

The utility model provides a taut screw rod hoisting device of hydroelectricity engineering seat ring spiral case, belongs to hydroelectricity engineering technical field, including two stands that the symmetry set up, two the top rotation of stand is connected with the crossbeam, and crossbeam below symmetry is connected with flexible subassembly, flexible subassembly's bottom can be dismantled and be connected with the bracket, the bracket middle part is connected with the taut screw rod of seat ring spiral case through rotating assembly, the crossbeam is worn out to the upper end of the taut screw rod of seat ring spiral case. According to the utility model, the lifting operation of the seat ring volute tensioning screw rod is safe, time and labor are saved, and meanwhile, the device is convenient to disassemble and install, so that the lifting efficiency of the tensioning screw rod can be greatly improved, and the construction period occupied by the working procedure is effectively shortened.

Description

Spiral case tensioning screw lifting device of hydroelectric engineering seat ring

Technical Field

The utility model belongs to the technical field of hydropower engineering, relates to a tensioning screw lifting device, and particularly relates to a tensioning screw lifting device for a seat ring volute of a hydropower engineering.

Background

The hydropower engineering is mainly used for surveying, planning, designing, constructing, scientific research, managing and the like of the hydropower engineering, and can be used for planning, designing, constructing, scientific research, managing and the like of departments of water conservancy, hydropower and the like.

The seat ring volute is used as a key component of a hydropower station runner and is a foundation support of a water turbine, bears the acting force of a water head and the running load of a unit, is firmly fixed through a lower tensioning screw after being hoisted on a concrete foundation, is long in length and large in weight, and needs to be hoisted into an embedded sleeve in advance, and is lifted to a screw hole of the seat ring volute from the lower part and screwed in after being in place. The space above the tensioning screw rod is narrow and cannot adopt a hoisting method, the tensioning screw rod can only be installed through lifting below, a jack, a lever and manpower are generally adopted on site to slowly lift the tensioning screw rod, supporting pieces with different heights are arranged in a cushioning mode to carry out rotation adjustment, the tensioning screw rod is required to be screwed into a spiral case bolt hole of a seat ring after lifting in place, but the tensioning screw rod is large in weight and friction force with a bottom support is also large, so that the rotating operation difficulty is extremely high, sliding is easy to occur in the rotating and lifting processes, and the safety risk is high. Meanwhile, the number of the tensioning screws of the seat ring spiral case of each unit is large, the jacking efficiency is low, and the working procedure generally occupies a long construction period.

To solve these problems, we propose a hydroelectric engineering seat ring volute tensioning screw lifting device.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present utility model is directed to providing a lifting device for a tightening screw of a seat ring volute in hydropower engineering, which is used for solving the technical problems of low lifting efficiency of the tightening screw of the seat ring volute in the prior art, and long time of a period occupied by a lifting process of the tightening screw.

In order to achieve the above and other related objects, the utility model provides a water and electricity engineering seat ring spiral case tensioning screw lifting device, which comprises two upright posts which are symmetrically arranged, wherein the tops of the two upright posts are rotationally connected with a cross beam, telescopic components are symmetrically connected below the cross beam, the bottoms of the telescopic components are detachably connected with brackets, the middle parts of the brackets are connected with the seat ring spiral case tensioning screw through rotating components, and the upper ends of the seat ring spiral case tensioning screw penetrate out of the cross beam.

In any of the above schemes, preferably, the upright post comprises a first steel pipe and a second steel pipe which are in threaded connection, a first handle is installed after the middle of the upper end of the first steel pipe is perforated, and inclined struts are rotatably connected to two sides of the bottom of the second steel pipe in a direction perpendicular to the cross beam.

In any of the above schemes, preferably, the telescopic assembly comprises a hydraulic cylinder body and a piston rod moving up and down along the hydraulic cylinder body, the top of the hydraulic cylinder body is connected with an ear handle, the bottom of the piston rod is connected with a lifting hook, and the lifting hook is detachably connected with the bracket.

In any of the above-mentioned schemes, preferably, the cross beam comprises a circular ring, two connecting plates are symmetrically connected to two sides of the circular ring, plugs are arranged at bottoms of end parts of the two connecting plates, a hinged support is arranged between the plugs and the circular ring, tops of the two first steel pipes are respectively inserted into the two plugs, and two groups of lugs of the telescopic assembly are connected with the hinged support through bolts.

In any of the above schemes, preferably, the bracket comprises a supporting plate, lifting rings are symmetrically connected to the supporting plate, the lifting rings are detachably connected with the lifting hooks, a supporting column fixedly connected is arranged in the middle of the supporting plate, and the top of the supporting column is connected with the rotating assembly.

In any of the above schemes, preferably, the support column comprises a third steel pipe and a fourth steel pipe which are connected through threads, and the upper end of the third steel pipe is provided with a second handle after being perforated.

In any of the above schemes, preferably, the rotating assembly comprises a planar bearing and a tray, wherein the planar bearing and the tray are connected with each other, the planar bearing is connected with the top of the third steel pipe, a seat ring volute tensioning screw rod is placed in the tray, and the upper end of the seat ring volute tensioning screw rod penetrates out of the circular ring.

In any of the above schemes, preferably, a side wall at the lower end of the cylinder body of the hydraulic cylinder is provided with a supply and drain nozzle, and the supply and drain nozzle is connected with a hydraulic pump through a pipeline.

As described above, the utility model relates to a water and electricity engineering seat ring spiral case tensioning screw lifting device, which has the following beneficial effects: according to the utility model, the upright post and the cross beam can be used as lifting supports for the seat ring volute tensioning screw rod, and when the seat ring volute tensioning screw rod is used, the hydraulic cylinder connected with the cross beam drives the bracket to lift up and down to drop. Therefore, the utility model can realize that the hydraulic cylinder piston rod drives the seat ring volute tensioning screw on the rotating assembly to automatically lift by operating the hydraulic pump station, and after the seat ring volute tensioning screw on the tray is lifted in place, the plane bearing arranged on the rotating assembly ensures flexible rotation of the seat ring volute tensioning screw on the tray, thereby avoiding personnel from lifting the tensioning screw by using a jack, a lever and manpower, being safe in use, labor-saving and convenient, being convenient to detach and install between each structure, greatly improving the lifting efficiency of the tensioning screw, and effectively reducing the occupied construction period of the procedure.

Drawings

Fig. 1 shows a schematic structure of the present utility model.

Fig. 2 shows a schematic structural view of the column.

Fig. 3 shows a schematic structural view of the cross beam.

Fig. 4 shows a schematic structural view of the telescopic assembly.

Fig. 5 shows a schematic structural view of the bracket.

Fig. 6 shows a schematic structural view of the rotating assembly.

Description of element reference numerals

1-stand columns; 11-a first steel pipe; 12-a second steel pipe; 13-a first handle; 14-diagonal bracing; 2-a cross beam; 21-connecting plates; 22-plug; 23-a circular ring; 24-a hinged support; 3-telescoping assembly; 31-a hydraulic cylinder body; 32-ear stems; 33-lifting hook; 34-a piston rod; 35-a supply and drain nozzle; 4-brackets; 41-supporting plates; 42-hanging rings; 43-a third steel pipe; 44-fourth steel pipe; 45-a second handle; a 5-rotation assembly; 51-plane bearing; 52-a tray; 6-seat ring volute tensioning screw; 7-hydraulic pump.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

Please refer to fig. 1 to 6. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

Referring to fig. 1-6, the utility model provides a water and electricity engineering seat ring spiral case tensioning screw lifting device, which comprises two symmetrically arranged upright posts 1, wherein the tops of the two upright posts 1 are rotationally connected with a cross beam 2, the lower part of the cross beam 2 is symmetrically connected with a telescopic assembly 3, the bottom of the telescopic assembly 3 is detachably connected with a bracket 4, the middle part of the bracket 4 is connected with a seat ring spiral case tensioning screw 6 through a rotating assembly 5, and the upper end of the seat ring spiral case tensioning screw 6 penetrates out of the cross beam 2.

When the embodiment is used, in the prior art, the lifting process of the seat ring volute tensioning screw needs to be carried out by adopting a jack, a lever and manpower to slowly lift the tensioning screw, supporting pieces with different heights are arranged to carry out rotation adjustment, the tensioning screw needs to be rotated and screwed into a seat ring volute bolt hole after being lifted in place, the weight of the tensioning screw is large, friction force with a bottom support is also large, the rotating operation difficulty is extremely large, sliding easily occurs in the rotating and lifting processes, and the safety risk is high. The number of the tensioning screws of the spiral case of each unit seat ring is large, the jacking efficiency is low, and the working procedure generally occupies a long construction period. Therefore, in order to solve the problems, a water and electricity engineering seat ring volute tensioning screw lifting device is provided in the embodiment. Specifically, the device comprises a stand column 1, a cross beam 2, a telescopic component 3, a bracket 4 and a rotating component 5. Two upright posts 1 which are symmetrically arranged are arranged on two sides of a seat ring volute tensioning screw 6, a cross beam 2 is sleeved on the seat ring volute tensioning screw 6, the lower end of the seat ring volute tensioning screw 6 is arranged on a rotating assembly 5, the lower end of the rotating assembly 5 is connected with a bracket 4, and the bracket 4 is detachably connected with a telescopic assembly 3. When needs promote seat ring spiral case tensioning screw rod 6, start telescopic assembly 3, telescopic assembly 3 shortens and drives bracket 4 upward movement, and bracket 4 upward movement drives seat ring spiral case tensioning screw rod 6 upward movement, reaches the effect that promotes seat ring spiral case tensioning screw rod 6, and seat ring spiral case tensioning screw rod 6 promotes back in place, and telescopic assembly 3 extends and drives bracket 4 and come back to the normal position and can carry out the lifting operation next time, and whole process operation is simple and convenient, promotes work efficiency height, and the security is high.

As a further description of the above embodiment, the upright 1 includes a first steel pipe 11 and a second steel pipe 12 that are connected by threads, a first handle 13 is installed after the middle of the upper end of the first steel pipe 11 is perforated, and two sides of the bottom of the second steel pipe 12 are rotatably connected with diagonal braces 14 perpendicular to the direction of the cross beam 2.

When the embodiment is used, the upright 1 is formed by two sections of steel pipes, external threads are processed at the outer end of the lower end of the first steel pipe 11 at the upper part, internal threads matched with the external threads on the first steel pipe 11 are processed in the upper end of the second steel pipe 12 at the bottom, and the first steel pipe 11 and the second steel pipe 12 are connected through threads. The middle and upper parts of the first steel pipes 11 are drilled, a first handle 13 is arranged in the hole, stop blocks are arranged at the two ends of the first handle 13 and used as limiting devices, the two sections of steel pipes are connected through threads, and the height of the upright 1 can be adjusted by rotating the handle. And the bottom of the upright post 1 is provided with the inclined strut 14 in the vertical direction with the cross beam 2, so that the upright post 1 is stable, and the inclined strut 14 is connected with the upright post 1 through a pin shaft.

As further described in the above embodiment, the telescopic assembly 3 includes a hydraulic cylinder body 31 and a piston rod 34 that moves up and down along the hydraulic cylinder body 31, the top of the hydraulic cylinder body 31 is connected with a lug 32, the bottom of the piston rod 34 is connected with a hook 33, and the hook 33 is detachably connected with the bracket 4.

When the hydraulic cylinder body 31 is used, the lug 32 is arranged at the top of the hydraulic cylinder body 31, the lug 32 is connected with the hinged support 24 of the cross beam 2 through the pin shaft, a certain rotatability between the hydraulic cylinder body 31 and the cross beam 2 is ensured, and the hydraulic cylinder body 31 is prevented from being fixedly connected and immovable in the lifting process to cause damage to the device. The bottom of the hydraulic cylinder body 31 is detachably connected with the bracket 4 through a lifting hook 33 on a piston rod 34, and the bracket 4 is driven to move through the up-and-down movement of the piston rod 34, so that the seat ring volute is driven to pull the screw rod 6 to lift.

In this embodiment, a supply and drain nozzle 35 is disposed on a side wall of the lower end of the hydraulic cylinder body 31, and the supply and drain nozzle 35 is connected to the hydraulic pump 7 through a pipeline. The hydraulic pump 7 is a YB1 12 vane pump, and the hydraulic cylinder is a conventional linear reciprocating single-piston hydraulic cylinder. Of course, the hydraulic pump 7 and the hydraulic cylinder are not limited thereto, and may be selected accordingly according to actual use requirements.

In this embodiment, the telescopic assembly 3 is not limited to be implemented by driving the piston rod 34 to move up and down by using the hydraulic pump 7 and the hydraulic cylinder, and other structures capable of driving the piston rod 34 to move up and down are also possible, such as driving the piston rod 34 to move up and down by using a pneumatic cylinder.

As a further description of the above embodiment, the cross beam 2 includes a ring 23, two sides of the ring 23 are symmetrically connected with connecting plates 21, the bottoms of the end portions of the two connecting plates 21 are respectively provided with a plug 22, a hinge support 24 is arranged between the plug 22 and the ring 23, the tops of the two first steel pipes 11 are respectively inserted into the two plugs 22, and the lugs 32 of the two groups of telescopic assemblies 3 are connected with the hinge support 24 through bolts.

When the embodiment is used, the cross beam 2 is symmetrically provided with two connecting plates 21, the middle of each connecting plate 21 is provided with a circular ring 23, the inner diameter of each circular ring 23 is larger than the outer diameter of the corresponding seat ring volute tensioning screw 6, the seat ring volute tensioning screw 6 can be ensured to pass through the circular ring 23, and the auxiliary fixing function can be realized by avoiding position collision. The plugs 22 are arranged at the bottoms of the two ends of the cross beam 2, the hinge bases 24 are arranged between the two sides of the cross beam and the circular ring 23, the plugs 22 are inserted into the upright posts 1 to ensure that the cross beam 2 is stressed and stable, the hinge bases are connected with the hydraulic cylinder body 31 to ensure that the hydraulic cylinder body 31 can rotate, and therefore dangers caused by damage to the hydraulic cylinder body 31 due to the fact that the bracket 4 shakes and the hydraulic cylinder body 31 is immovable in the lifting process are avoided.

As a further description of the above embodiment, the bracket 4 includes a supporting plate 41, on which hanging rings 42 are symmetrically connected, the hanging rings 42 are detachably connected with the hanging hooks 33, a supporting column fixedly connected is disposed in the middle of the supporting plate 41, and the top of the supporting column is connected with the rotating assembly 5.

When the embodiment is used, the hanging rings 42 are arranged on two sides of the bracket 4, so that detachable connection with the hanging hooks 33 is realized. The support column is arranged in the middle of the bracket 4 and consists of two sections of steel pipes, external threads are processed outside the lower end pipe of the third steel pipe 43, internal threads matched with the external threads of the third steel pipe 43 are processed inside the upper end pipe of the fourth steel pipe 44, and threaded connection between the third steel pipe 43 and the fourth steel pipe 44 is achieved. The middle and upper parts of the third steel pipes 43 are drilled, the second handles 45 are installed in the holes, the stop blocks are installed at the two ends of each second handle 45 to serve as limiting devices, the two sections of steel pipes are connected through threads, the second handles 45 are rotated, and the whole height can be adjusted.

After the telescopic component 3 lifts the seat ring volute tensioning screw 6 in place, the rotatable second handle 45 drives the third steel pipe 43 to move up and down along the fourth steel pipe 44, so that the height of the seat ring volute tensioning screw 6 is finely adjusted to meet the requirements, and the installation of the seat ring volute tensioning screw 6 is facilitated.

As a further description of the above embodiment, the rotating assembly 5 includes a planar bearing 51 and a tray 52, which are connected to each other, the planar bearing 51 is connected to the top of the third steel tube 43, the tray 52 is internally provided with a seat ring volute tensioning screw 6, and the upper end of the seat ring volute tensioning screw 6 penetrates out of the circular ring 23.

In use of this embodiment, the rotating assembly 5 includes a planar bearing 51 mounted on top of the support column, with a tray 52 disposed above the planar bearing 51. The tray 52 is internally provided with the seat ring volute tensioning screw rod 6, and after the seat ring volute tensioning screw rod 6 is lifted in place, the seat ring volute tensioning screw rod 6 is guaranteed to rotate flexibly, and the use is convenient.

In this embodiment, the planar bearing 51 is a conventional thrust planar bearing with balls, although other planar bearings may be selected according to actual use.

In summary, the lifting operation of the seat ring volute tensioning screw rod is safe, time-saving and labor-saving, and meanwhile, the device is convenient to detach and install, so that the lifting efficiency of the tensioning screw rod can be greatly improved, and the construction period occupied by the working procedure is effectively shortened. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (8)

1. The utility model provides a water and electricity engineering seat ring spiral case tensioning screw rod hoisting device which characterized in that: including stand (1) that two symmetries set up, two the top rotation of stand (1) is connected with crossbeam (2), and crossbeam (2) below symmetrical connection has telescopic subassembly (3), the bottom of telescopic subassembly (3) can be dismantled and be connected with bracket (4), bracket (4) middle part is connected with seat ring spiral case tensioning screw (6) through rotating assembly (5), crossbeam (2) are worn out to the upper end of seat ring spiral case tensioning screw (6).

2. The hydroelectricity engineering seat ring volute tensioning screw lifting device of claim 1, wherein: the stand (1) comprises a first steel pipe (11) and a second steel pipe (12) which are in threaded connection, a first handle (13) is installed after the middle of the upper end of the first steel pipe (11) is perforated, and inclined struts (14) are rotatably connected to the two sides of the bottom of the second steel pipe (12) perpendicular to the direction of the cross beam (2).

3. The hydroelectricity engineering seat ring volute tensioning screw lifting device according to claim 2, characterized in that: the telescopic component (3) comprises a hydraulic cylinder body (31) and a piston rod (34) which moves up and down along the hydraulic cylinder body (31), the top of the hydraulic cylinder body (31) is connected with an ear handle (32), the bottom of the piston rod (34) is connected with a lifting hook (33), and the lifting hook (33) is detachably connected with the bracket (4).

4. A hydroelectricity engineering seat ring volute tensioning screw lifting device according to claim 3, characterized in that: the cross beam (2) comprises a circular ring (23), connecting plates (21) are symmetrically connected to two sides of the circular ring (23), plugs (22) are arranged at the bottoms of the ends of the connecting plates (21), a hinged support (24) is arranged between each plug (22) and the circular ring (23), the tops of two first steel pipes (11) are respectively inserted into the two plugs (22), and two groups of lugs (32) of the telescopic assembly (3) are connected with the hinged support (24) through bolts.

5. The hydroelectricity engineering seat ring volute tensioning screw lifting device of claim 4, wherein: the bracket (4) comprises a supporting plate (41), lifting rings (42) are symmetrically connected to the supporting plate (41), the lifting rings (42) are detachably connected with the lifting hooks (33), supporting columns which are fixedly connected are arranged in the middle of the supporting plate (41), and the tops of the supporting columns are connected with the rotating assembly (5).

6. The hydroelectricity engineering seat ring volute tensioning screw lifting device of claim 5, wherein: the support column comprises a third steel pipe (43) and a fourth steel pipe (44) which are in threaded connection, and a second handle (45) is installed after the upper end of the third steel pipe (43) is provided with a hole.

7. The hydroelectricity engineering seat ring volute tensioning screw lifting device of claim 6, wherein: the rotating assembly (5) comprises a plane bearing (51) and a tray (52) which are connected with each other, the plane bearing (51) is connected with the top of the third steel pipe (43), a seat ring volute tensioning screw (6) is placed in the tray (52), and the upper end of the seat ring volute tensioning screw (6) penetrates out of the circular ring (23).

8. A hydroelectricity engineering seat ring volute tensioning screw lifting device according to claim 3, characterized in that: the side wall of the lower end of the hydraulic cylinder body (31) is provided with a supply and discharge nozzle (35), and the supply and discharge nozzle (35) is connected with a hydraulic pump (7) through a pipeline.

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