Heavy screw mounting and supporting device

Abstract

The utility model discloses a heavy screw mounting and supporting device, which belongs to the technical field of mounting of volute seat ring screws, and comprises a screw supporting assembly, a screw fixing assembly, a screw fixing assembly, a screw fixing assembly and a screw fixing assembly, and the screw supporting assembly comprises a tower-type bearing bar and a mounting base welded at the bottom end of the tower-type bearing bar; the bearing and supporting assembly comprises a weighing table fixed to the top end of the tower type bearing rod, a rotary bearing plate rotationally installed on the top face of the weighing table and a plurality of hydraulic jacks installed on the top face of the rotary bearing plate in an annular array mode. A lifting bearing disc is fixedly installed at the top ends of the multiple hydraulic jacks, a screw base sleeve is longitudinally and fixedly embedded in the middle of the top face of the lifting bearing disc, a mounting groove for longitudinally bearing a screw is formed in the middle of the screw base sleeve, and a rotating component used for driving the rotating bearing plate to rotate is arranged in the weighing table. And after the plurality of hydraulic jacks lift the screw rod, the rotating component drives the screw rod to rotate and be screwed into a corresponding bolt hole at the bottom of the volute seat ring in the weighing platform.

Description

Technical Field

[0001] The utility model belongs to the technical field of the installation of the spiral case stay ring screw, in particular to a heavy screw installation support device. Background Technique

[0002] With the continuous progress of China's industrial era, in the fields of the design, manufacture and installation of hydro-generator units, China has achieved a leapfrog development from "following" to "running side by side" and then to "leading". When installing the stay ring tensioning screw of the turbine spiral case in a power station, the mass of a single screw reaches 165 kg. Coupled with the limited space at the construction site and the inability to use lifting machinery, it undoubtedly increases the difficulty of on-site installation.

[0003] When it comes to the installation of heavy screws, it is usually necessary to accurately screw the screws into the bolt holes at the bottom of the spiral case stay ring. The traditional installation method has the following problems and deficiencies: In the traditional installation process, the position of the screw is often adjusted manually by workers, which may cause the screw to fail to accurately align with the bolt hole, thus affecting the installation quality and the normal use of the equipment. At the same time, the method of manually adjusting the position of the screw not only takes a long time, but also is prone to human errors, increasing the installation time and cost. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heavy screw installation support device to solve the problems put forward in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A heavy screw installation support device, comprising:

[0006] A screw support assembly, including a tower-shaped load-bearing rod and an installation base welded to the bottom end of the tower-shaped load-bearing rod;

[0007] A load-bearing support assembly, including a weighing platform fixed to the top end of the tower-shaped load-bearing rod, a rotating load-bearing plate rotatably installed on the top surface of the weighing platform, and a plurality of hydraulic jacks annularly arrayed on the top surface of the rotating load-bearing plate;

[0008] Wherein, the top ends of the plurality of hydraulic jacks are fixedly installed with a lifting load-bearing disc, a screw base sleeve is longitudinally fixedly embedded in the middle position of the top surface of the lifting load-bearing disc, an installation groove for longitudinally bearing the screw is provided in the middle of the screw base sleeve, a rotating component for driving the rotating load-bearing plate to rotate is arranged inside the weighing platform, and after the plurality of hydraulic jacks lift the screw, the rotating component drives the screw to rotate and screw into the corresponding bolt hole at the bottom of the spiral case stay ring inside the weighing platform.

[0009] Preferably, in this solution, the rotating member includes a rotating motor fixedly embedded in the weighing table, and the output shaft of the rotating motor is connected to the bottom surface of the rotating bearing plate, so that the rotating motor drives the rotating bearing plate to rotate on the top surface of the weighing table, thereby adjusting the position of the screw.

[0010] Preferably, in this solution, an installation groove for installing the rotating motor is provided at the middle position of the top surface of the weighing table, and the bottom end of the rotating motor is fixedly connected to the inner bottom wall of the installation groove by bolts.

[0011] Preferably, in this solution, a positioning annular track is provided on the top surface of the weighing table on the periphery of the installation groove, and a plurality of positioning track balls are embedded in a ring array on the bottom surface of the rotating bearing plate and are in rolling friction contact in the positioning annular track.

[0012] Preferably, in this solution, a buffer air spring is fixedly installed at the middle position of the top surface of the rotating bearing plate between multiple hydraulic jacks, and the top end of the buffer air spring elastically abuts against the bottom surface of the lifting bearing plate upward.

[0013] Preferably, in this solution, a shaft hole for installing the output shaft is provided at the middle position of the bottom surface of the rotating bearing plate, a key block is welded on the outer wall of the circumference of the output shaft, and a key groove for fitting and installing the key block is extended on the inner wall of the shaft hole.

[0014] Preferably, in this solution, multiple anchor rods penetrate longitudinally through the top surface of the installation base, and the screw is temporarily fixed by being pre-passed through an external seat ring support sleeve. After the center, horizontal, elevation and azimuth of the volute seat ring are adjusted to be qualified, the screw is lifted and screwed into the corresponding bolt holes at the bottom of the seat ring.

[0015] Compared with the prior art, the technical effects and advantages of the present utility model are as follows:

[0016] For this heavy-duty screw installation support device, through the precise combination of the rotating bearing plate and the hydraulic jacks, the position of the screw can be accurately adjusted to ensure that the screw can be accurately screwed into the bolt holes at the bottom of the volute seat ring, improving the installation accuracy of the screw and reducing problems caused by installation errors, such as incomplete tightening of bolts or misalignment of screws. By using the rotating motor and the output shaft to drive the rotation of the rotating bearing plate, the position of the screw can be quickly adjusted without manual adjustment, greatly improving the installation efficiency, reducing the time required for manual adjustment, and at the same time reducing the labor cost;

[0017] Through auxiliary structures such as buffer air springs and positioning track balls, the stability of the entire device is enhanced. Especially during the process of adjusting the position of the screw, the stability of the screw during installation is improved, reducing the installation errors caused by vibration or shaking. Through the combined use of the positioning ring track and positioning track balls, the friction during the rotation of the rotating bearing plate is reduced, extending the service life of the device and reducing the maintenance cost and the frequency of replacing parts. Brief Description of the Drawings

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the present invention;

[0020] Figure 2 Installation structural schematic diagram of the hydraulic jack of the present invention;

[0021] Figure 3 Disassembly structural schematic diagram of the rotating motor of the present invention;

[0022] Figure 4 Structural schematic diagram of the rotating bearing plate of the present invention.

[0023] Description of the reference numerals in the drawings:

[0024] In the figure: 1, screw support assembly; 2, tower-shaped load-bearing rod; 3, installation base; 4, weighing platform; 5, rotating bearing plate; 6, lifting bearing plate; 7, hydraulic jack; 8, screw base sleeve; 9, installation groove; 10, rotating motor; 11, positioning ring track; 12, buffer air spring; 13, output shaft; 14, positioning track ball; 15, shaft hole; 16, keyway. Specific Embodiments

[0025] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some well-known technical features in the art are not described.

[0026] Unless otherwise defined, the directions such as up, down, left, right, front, back, inside and outside involved in this text are based on the up, down, left, right, front, back, inside and outside directions in the figures shown by the present utility model, which are hereby explained together.

[0027] This embodiment provides a heavy-duty screw installation support device as shown in Figures 1 to 4 Figure, which includes a screw support assembly 1 and a load-bearing support component.

[0028] In this embodiment, the screw support assembly 1 includes a tower-shaped load-bearing rod 2 and a mounting base 3 welded to the bottom end of the tower-shaped load-bearing rod 2; the screw support assembly 1 serves as the main frame of the overall structure, responsible for supporting the entire device, providing an installation foundation for other components, ensuring the stability of the entire device, ensuring the stability and reliability of the device, and providing stable support for subsequent operations. The tower-shaped load-bearing rod 2 serves as the main vertical support member, bearing the weight from above and transmitting the load generated by the upper components to the lower mounting base 3 below, ensuring the strength and stability of the structure and preventing deformation or damage due to heavy loads. The mounting base 3 serves as the bottom fixing member, used to fix the entire device to the ground, and fix the tower-shaped load-bearing rod 2 to the ground or foundation through anchoring or other means, ensuring that the entire device will not move or tip over due to vibration or external forces during the working process.

[0029] In this embodiment, the load-bearing support component includes a weighing platform 4 fixed to the top end of the tower-shaped load-bearing rod 2, a rotating bearing plate 5 rotatably mounted on the top surface of the weighing platform 4, and a plurality of hydraulic jacks 7 annularly arrayed on the top surface of the rotating bearing plate 5; the weighing platform 4 serves as an intermediate platform, used to install the rotating bearing plate 5 and other related components (structural components above the rotating bearing plate 5), and can also bear a certain weight, ensuring the smooth operation of the rotating bearing plate 5 and related components, and providing necessary support for the entire device. The rotating bearing plate 5 serves as a rotating platform, allowing the screw to rotate during the installation process, adjusting the position of the screw by rotation to accurately align the bolt holes, ensuring that the screw can be screwed into the specified position accurately and improving the installation accuracy. The hydraulic jacks 7 provide force in the vertical direction, used to lift the screw, and adjust the height of the screw by telescoping, so that it can be correctly screwed into the bolt hole, ensuring that the screw can be accurately positioned and installed.

[0030] In this embodiment, a lifting and bearing disc 6 is fixedly installed at the top of multiple hydraulic jacks 7. The lifting and bearing disc 6 is used to support the screw rod and transfer force to the lower hydraulic jacks 7, directly contacting the screw rod to transfer the weight of the screw rod to the hydraulic jacks 7, ensuring the stability of the screw rod during lifting and rotation. In the middle position of the top surface of the lifting and bearing disc 6, a screw rod base sleeve 8 is longitudinally fixedly embedded. The screw rod base sleeve 8 serves as a guiding member for the screw rod, ensuring the linear movement of the screw rod, providing a space for the screw rod to pass through, and simultaneously playing a guiding and supporting role to ensure that the screw rod does not deviate from the predetermined path during rotation, improving the installation accuracy. The middle of the screw rod base sleeve 8 has an installation groove 9 for longitudinally bearing the screw rod. Inside the weighing platform 4, there is a rotating component for driving the rotating bearing plate 5 to rotate. After multiple hydraulic jacks 7 lift the screw rod, the rotating component drives the screw rod to rotate and screw it into the bolt hole corresponding to the bottom of the volute seat ring in the weighing platform 4.

[0031] In this embodiment, the rotating component includes a rotating motor 10 fixedly embedded in the weighing platform 4. The output shaft 13 of the rotating motor 10 is connected to the bottom surface of the rotating bearing plate 5, so that the rotating motor 10 drives the rotating bearing plate 5 to rotate on the top surface of the weighing platform 4, thereby adjusting the position of the screw rod.

[0032] In this embodiment, an installation groove 9 for installing the rotating motor 10 is provided at the middle position of the top surface of the weighing platform 4. The bottom end of the rotating motor 10 is fixedly connected to the inner bottom wall of the installation groove 9 by bolts. The installation groove 9 serves as the installation position of the rotating motor 10, providing an installation space for the rotating motor 10, ensuring that the rotating motor 10 is firmly installed on the weighing platform 4, ensuring that the rotating motor 10 can operate smoothly, providing sufficient torque to drive the rotating bearing plate 5. A positioning annular track 11 is provided on the circumferential side of the installation groove 9 and on the top surface of the weighing platform 4. A plurality of positioning track balls 14 are rollingly embedded in an annular array on the bottom surface of the rotating bearing plate 5, and the positioning track balls 14 are in rolling friction contact in the positioning annular track 11.

[0033] In this embodiment, the positioning annular track 11 serves as a guide rail for the rotating bearing plate 5, providing guidance and support for the rotating bearing plate 5 during rotation, reducing friction during rotation, and ensuring the smooth rotation of the rotating bearing plate 5. The positioning track balls 14 serve as rolling components between the rotating bearing plate 5 and the positioning annular track 11, reducing the friction force of the rotating bearing plate 5 during rotation, ensuring that the rotating bearing plate 5 can rotate more smoothly, and reducing wear.

[0034] In this embodiment, a buffer air spring 12 is fixedly installed between multiple hydraulic jacks 7 and at the middle position on the top surface of the rotating bearing plate 5. The top end of the buffer air spring 12 elastically abuts upward against the bottom surface of the lifting bearing plate 6. The buffer air spring 12 serves as a shock-absorbing element, absorbing the vibration of the screw during the lifting process, absorbing impacts and vibrations by compressing and releasing air, ensuring that the screw is more stable during operation, and reducing noise and vibration.

[0035] In this embodiment, a shaft hole 15 for installing the output shaft 13 is provided at the middle position on the bottom surface of the rotating bearing plate 5. A key block is welded to the circumferential outer wall of the output shaft 13, and a key groove 16 for fitting and installing the key block is extended and provided on the inner wall of the shaft hole 15. Multiple anchor rods longitudinally penetrate and connect through the top surface of the installation base 3. The screw is temporarily fixed by being pre-passed through an external seat ring support sleeve. After the center horizontal and elevation azimuth of the volute seat ring are adjusted to be qualified, the screw is lifted and screwed into the corresponding bolt holes at the bottom of the seat ring. The key groove 16, as a matching structure of the key block, cooperates with the key block to ensure the reliable connection between the output shaft 13 and the rotating bearing plate 5, and ensure that the torque transmission between the output shaft 13 and the rotating bearing plate 5 is not affected.

[0036] Working principle:

[0037] For this heavy-duty screw installation support device, the screw support assembly 1 provides the structural support for the entire device. Through the combination of the tower-shaped load-bearing rod 2 and the installation base 3, a stable foundation is provided for the entire device, ensuring that the device will not tilt or become unstable during operation. The position of the rotating bearing plate 5 is fixed through the weighing platform 4, and an installation position is provided for the hydraulic jacks 7. The position of the screw is adjusted through the rotation function of the rotating bearing plate 5. The screw is lifted to the required height by multiple hydraulic jacks 7, and the screw is fixed at the central position through the lifting bearing plate 6, ensuring that the screw can rise and fall smoothly during the installation process. Through the rotation function of the rotating bearing plate 5, it is ensured that the screw can be accurately aligned with the bolt holes at the bottom of the volute seat ring.

[0038] The rotating motor 10 drives the output shaft 13 to rotate, driving the rotating bearing plate 5 to rotate, thereby adjusting the position of the screw. The output shaft 13 is connected to the rotating bearing plate 5, enabling the rotating bearing plate 5 to rotate on the top surface of the weighing platform 4. The rotation of the rotating bearing plate 5 adjusts the position of the screw, ensuring that the screw can be accurately screwed into the bolt holes at the bottom of the volute seat ring.

[0039] The combination of the positioning annular track 11 and the positioning track balls 14 reduces the friction when the rotating bearing plate 5 rotates. The buffer air spring 12 provides additional stability, reducing the vibration of the screw during rotation. The shaft hole 15 and the key groove 16 ensure the reliable connection between the output shaft 13 and the rotating bearing plate 5.

[0040] The entire device is fixed to the ground through the screw support assembly 1. The screw is pre-passed through the external stay ring support sleeve for temporary fixation. After the center level and elevation azimuth of the volute stay ring are adjusted to be qualified, the screw is lifted by the hydraulic jack 7, and the position of the screw is adjusted by using the rotary motor 10. Finally, the screw is tightened into the bolt holes at the bottom of the volute stay ring.

[0041] It should be noted that in this article, relational terms such as "one" and "two" 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heavy-duty screw mounting support device, characterized in that: include: The screw rod support assembly (1) comprises a tower-type load-bearing rod (2) and a mounting base (3) welded to the bottom end of the tower-type load-bearing rod (2); A load-bearing support assembly comprises a weighing platform (4) fixed to the top of the tower-type load-bearing rod (2), a rotating bearing plate (5) rotatably mounted on the top surface of the weighing platform (4), and a plurality of hydraulic jacks (7) mounted in a circular array on the top surface of the rotating bearing plate (5); Among them, a lifting bearing plate (6) is fixedly installed on the top of the plurality of hydraulic jacks (7), a screw base sleeve (8) is longitudinally fixedly embedded in the middle position of the top surface of the lifting bearing plate (6), and the middle of the screw base sleeve (8) has an installation groove (9) for longitudinally supporting the screw, and a rotating component for driving the rotating bearing plate (5) to rotate is arranged inside the weighing platform (4). After the plurality of hydraulic jacks (7) lift the screw, the rotating component drives the screw to rotate inside the weighing platform (4) and is screwed into the bolt hole corresponding to the bottom of the volute seat ring.

2. A heavy-duty screw rod mounting support device according to claim 1, characterized in that: The rotating component includes a rotating motor (10) fixedly embedded in the weighing platform (4), and the output shaft (13) of the rotating motor (10) is connected to the bottom surface of the rotating supporting plate (5), so that the rotating motor (10) drives the rotating supporting plate (5) to rotate on the top surface of the weighing platform (4), thereby adjusting the position of the screw.

3. A heavy-duty screw rod mounting support device according to claim 2, characterized in that: A mounting groove (9) for mounting the rotating motor (10) is provided in the middle of the top surface of the weighing platform (4), and the bottom end of the rotating motor (10) is fixedly connected to the inner bottom wall of the mounting groove (9) by bolts.

4. A heavy-duty screw rod mounting support device according to claim 3, characterized in that: A positioning annular track (11) is provided on the circumferential side of the mounting groove (9) and on the top surface of the weighing platform (4); a plurality of positioning track balls (14) are rollingly embedded in an annular array on the bottom surface of the rotating bearing plate (5); and the positioning track balls (14) are in rolling frictional contact in the positioning annular track (11).

5. A heavy-duty screw rod mounting support device according to claim 4, characterized in that: A buffer air spring (12) is fixedly installed between the plurality of hydraulic jacks (7) and located in the middle of the top surface of the rotating bearing plate (5), and the top end of the buffer air spring (12) elastically abuts against the bottom surface of the lifting bearing plate (6) upward.

6. A heavy-duty screw rod mounting support device according to claim 5, characterized in that: An axial hole (15) for mounting the output shaft (13) is provided in the middle of the bottom surface of the rotating bearing plate (5), a key block is welded to the outer wall of the peripheral side of the output shaft (13), and a key groove (16) for fitting and mounting the key block is extended from the inner wall of the axial hole (15).

7. A heavy-duty screw rod mounting support device according to claim 6, characterized in that: The top surface of the mounting base (3) is longitudinally penetrated by a plurality of anchor rods, and the screw rods are inserted into the sleeve of the external seat ring support for temporary fixation in advance. After the center level and elevation azimuth of the volute seat ring are adjusted to meet the standards, the screw rods are lifted and screwed into the corresponding bolt holes at the bottom of the seat ring.

Images