Heavy screw mounting and positioning device

Abstract

The utility model discloses a heavy screw rod mounting and positioning device, which belongs to the technical field of screw rod positioning and mounting, and comprises a screw rod mounting and positioning assembly which comprises a tower type bearing rod and a bearing support table welded at the top end of the tower type bearing rod; the screw weighing and lifting assembly comprises a rotary bearing disc rotationally installed on the top face of the bearing supporting table, a plurality of hydraulic jacks fixedly installed on the top face of the rotary bearing disc and a lifting and screwing tray fixed to the top ends of the hydraulic jacks; the screw mounting and positioning assembly comprises a positioning stepped counter bore formed in the middle position of the top surface of the lifting and screwing tray, edge vertical plates integrally and longitudinally connected to the edges of the two sides of the top surface of the lifting and screwing tray, and centripetal clamping plates which are mounted on the inner walls of the two edge vertical plates correspondingly and used for centripetal moving and clamping screws; clamping oil cylinders are installed on the opposite side faces of the two edge vertical plate pieces, and piston rods of the clamping oil cylinders centripetally penetrate through the edge vertical plate pieces to be fixedly connected with the back faces of the centripetal clamping plate pieces.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw positioning and installation, in particular to a heavy screw installation and positioning device. Background Technique

[0002] With the continuous progress of China's industrial era, in the fields of design, manufacturing and installation of hydro-generator units, when installing the tensioning screws of the spiral case stay ring of a power station water turbine, 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] During the assembly process of the spiral case stay ring of a power station water turbine, it is often necessary to install large-sized screws to ensure the stability and reliability of the structure. Traditional heavy screw installation methods usually rely on manual labor for operations such as handling, positioning and tightening. This method has the following main problems: Due to the limitations of manual operations, it is difficult to ensure the precise alignment of the screw during installation. Especially when multiple bolt holes need to be aligned, deviations may occur, affecting the final assembly quality. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heavy screw installation and positioning device to solve the problems raised in the background technique.

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

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

[0007] A screw weighing and lifting component, including a rotating load-bearing disk rotatably installed on the top surface of the load-bearing support platform, multiple hydraulic jacks fixedly installed on the top surface of the rotating load-bearing disk, and a lifting and screwing tray fixed to the top end of the hydraulic jacks;

[0008] A screw installation and positioning component, including a positioning stepped counterbore opened at the middle position of the top surface of the lifting and screwing tray, edge vertical plate members integrally and longitudinally connected to both side edges of the top surface of the lifting and screwing tray, and centripetal clamping plate members respectively installed on the inner walls of the two edge vertical plate members for centripetally moving and clamping the screw;

[0009] Among them, clamping oil cylinders are installed on the opposite side surfaces of the two edge vertical plate members. The piston rods of the clamping oil cylinders penetrate the edge vertical plate members centripetally and are fixedly connected to the back surfaces of the centripetal clamping plate members. Clamping groove parts for matching and clamping the screw itself are opened at the middle positions of the opposite side surfaces of the two centripetal clamping plate members, so that the screw is clamped and positioned in the two spliced clamping groove parts, lifted upward and screwed.

[0010] Preferably, on the inner wall of each of the clamping groove parts, clamping sawtooth parts are equidistantly arranged from top to bottom, and the clamping sawtooth parts are fitted and clamped on the circumferential outer wall of the screw rod to increase the friction force.

[0011] Preferably, on the back surfaces of the two centripetal clamping plate parts, positioning cross bar parts are symmetrically welded on both sides of the piston rod. Each of the positioning cross bar parts horizontally penetrates through the adjacent edge vertical plate parts for centripetal movement and clamping positioning of the centripetal clamping plate parts.

[0012] Preferably, on the circumferential outer wall of the rotating load-bearing disc, inverted L-shaped positioning vertical rods are symmetrically welded. A positioning turntable is rotatably connected to the circumferential side of one end of the tower-shaped load-bearing rod close to the load-bearing support platform. One ends of the two L-shaped positioning vertical rods far from the rotating load-bearing disc are welded to the top surface of the positioning turntable.

[0013] Preferably, a sealed bearing is in interference fit inside the center of the positioning turntable, and the inner ring of the sealed bearing is in interference fit on the circumferential outer wall of the tower-shaped load-bearing rod. When the rotating load-bearing disc carries a load and rotates, the two L-shaped positioning vertical rods can drive the positioning turntable to rotate for positioning of the rotating load-bearing disc.

[0014] Preferably, a rotating motor is longitudinally embedded inside the load-bearing support platform, and the output shaft of the rotating motor is longitudinally connected to the bottom surface of the rotating load-bearing disc.

[0015] Preferably, a screw rod is carried in the cavity of the positioning stepped counterbore, and the centripetal clamping plate parts centripetally clamp the screw rod. Through the lifting of the hydraulic jack and the drive of the rotating motor, the screw rod is screwed into the corresponding bolt holes at the bottom of the seat ring.

[0016] Compared with the prior art, the technical effects and advantages of the present utility model are as follows:

[0017] For this heavy screw rod installation and positioning device, by using a rotatable lifting and screwing tray and a positioning stepped counterbore, the heavy screw rod can be quickly and accurately positioned and screwed into the installation position. This design greatly reduces the need for manual intervention, improves the installation speed and efficiency. By using the centripetal clamping parts and clamping groove parts controlled by the clamping oil cylinder, the screw rod can be precisely clamped to ensure the accurate position of the screw rod during the installation process, reducing the errors caused by manual operation. Through the drive of the hydraulic jack and the rotating motor, the operator does not need to perform heavy manual lifting and rotating operations, greatly reducing the labor intensity and making the operation simpler and more convenient.

[0018] The combined design of the tower-shaped load-bearing rod and the load-bearing support platform, together with the cooperation of the rotating load-bearing disc and the positioning turntable, ensures the structural stability of the entire device and enables it to maintain good balance even under heavy load conditions. The positioning turntable, as part of the rotating mechanism, is used to transmit rotational motion. By connecting with the L-shaped positioning vertical rod, the rotation of the rotating load-bearing disc is realized, ensuring that the rotating load-bearing disc can rotate smoothly and achieving the precise alignment of the screw. Brief Description of the Drawings

[0019] 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.

[0020] Figure 1 Structural schematic diagram of the present invention;

[0021] Figure 2 Structural schematic diagram of the lifting and screwing tray of the present invention;

[0022] Figure 3 Installation structural schematic diagram of the centripetal clamping plate member of the present invention;

[0023] Figure 4 Connection structural schematic diagram of the L-shaped positioning vertical rod of the present invention.

[0024] Explanation of the reference numerals in the drawings:

[0025] In the figure: 1, screw installation and positioning assembly; 2, tower-shaped load-bearing rod; 3, installation base; 4, load-bearing support platform; 5, rotating load-bearing disc; 6, lifting and screwing tray; 7, clamping oil cylinder; 8, hydraulic jack; 9, edge vertical plate member; 10, positioning cross bar member; 11, positioning stepped counterbore; 12, centripetal clamping plate member; 13, clamping groove part; 14, clamping serrated member; 15, L-shaped positioning vertical rod; 16, positioning turntable; 17, sealing bearing. Detailed Description of the Preferred Embodiments

[0026] 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.

[0027] Unless otherwise defined, the directions such as up, down, left, right, front, back, inside and outside involved in this article are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown by the present utility model, which is hereby explained together.

[0028] This embodiment provides a heavy-duty screw installation and positioning device as shown in Figures 1 to 4 Figure 5, which includes: a screw installation and positioning assembly 1, a screw weighing and lifting component, and a screw installation and positioning component.

[0029] In this embodiment, the screw installation and positioning assembly 1 includes a tower-shaped load-bearing rod 2 and a load-bearing support platform 4 welded to the top of the tower-shaped load-bearing rod 2. An installation base 3 is welded to the bottom of the tower-shaped load-bearing rod 2. The screw installation and positioning assembly 1, as the core structure of the entire device, is responsible for bearing all components and providing stable support. By integrating the tower-shaped load-bearing rod 2 and the load-bearing support platform 4, a complete structural framework is formed, ensuring the overall stability and reliability of the device. The installation base 3 is used to fix the tower-shaped load-bearing rod 2 and stably install it on the ground. The tower-shaped load-bearing rod 2 is firmly fixed to the ground through anchor bolts or other fixing methods, ensuring the foundation stability of the entire device. The tower-shaped load-bearing rod 2, as the main load-bearing component, bears the weight of the entire device and the dynamic load generated during the operation process, supports the load-bearing support platform 4 and other upper structures, and provides the necessary structural strength and stability.

[0030] In this embodiment, the screw weighing and lifting component includes a rotary load-bearing disc 5 rotatably installed on the top surface of the load-bearing support platform 4, multiple hydraulic jacks 8 fixedly installed on the top surface of the rotary load-bearing disc 5, and a lifting and screwing tray 6 fixed to the top of the hydraulic jacks 8. The load-bearing support platform 4, as the platform at the top of the tower-shaped load-bearing rod 2, is used to install the rotary load-bearing disc 5 and other related components, support the rotary load-bearing disc 5 and subsequent structural components, and provide a solid support platform for the rotary load-bearing disc 5. The rotary load-bearing disc 5, as a rotary platform, allows the lifting and screwing tray 6 and the screw thereon to rotate freely. Through the cooperation with the sealing bearing 17 and the positioning turntable 16, the smooth rotation of the lifting and screwing tray 6 is realized, ensuring that the screw can be accurately aligned with the installation position and rotated and screwed in. The lifting and screwing tray 6, as the platform for carrying the screw, has both rotation and lifting functions. It realizes the vertical lifting through the hydraulic jacks 8 and the horizontal rotation through driving the rotary load-bearing disc 5 by a rotary motor, ensuring that the screw can be accurately screwed in at the correct height and angle. The hydraulic jacks 8 are used to lift the lifting and screwing tray 6 and the screw thereon, generate upward or downward movement through hydraulic power, and adjust the height of the screw to ensure that the screw can be lifted to the correct position for installation.

[0031] In this embodiment, the screw mounting and positioning assembly includes a positioning stepped counterbore 11 formed in the middle of the top surface of the lifting and screwing tray 6, edge vertical plate members 9 integrally and longitudinally connected to the edges of both sides of the top surface of the lifting and screwing tray 6, and centripetal clamping plate members 12 respectively installed on the inner walls of the two edge vertical plate members 9 for centripetally moving and clamping the screw. The edge vertical plate members 9 serve as the support structure for the centripetal clamping plate members 12, ensuring their stability and precision, fixing the centripetal clamping plate members 12, and allowing them to move under the action of the clamping oil cylinder 7, ensuring the reliable clamping and positioning of the centripetal clamping plate members 12. The positioning stepped counterbore 11 serves as the preliminary positioning area for the screw, for the initial placement of the screw, providing a pre-positioning location for the screw, facilitating subsequent clamping and installation operations, ensuring that the screw can be accurately placed in the clamping mechanism, and at the same time, due to the stepped design, it can meet the installation of screws with different diameter sizes.

[0032] In this embodiment, clamping oil cylinders 7 are installed on the opposite side surfaces of the two edge vertical plate members 9. The piston rods of the clamping oil cylinders 7 penetrate the edge vertical plate members 9 centripetally and are fixedly connected to the back surfaces of the centripetal clamping plate members 12. Clamping groove portions 13 for matching and clamping the screw itself are formed in the middle positions of the opposite side surfaces of the two centripetal clamping plate members 12, so that the screw is located in the two spliced clamping groove portions 13 for clamping, positioning, lifting upward, and screwing operation. Clamping sawtooth members 14 are equidistantly arranged from top to bottom on the inner walls of each clamping groove portion 13, and the clamping sawtooth members 14 are matched and clamped on the circumferential outer wall of the screw to increase the friction force.

[0033] In this embodiment, the clamping groove portion 13 is the key structure for clamping the screw, ensuring that the screw is accurately clamped, matching the shape of the screw, providing a clamping surface, ensuring that the screw is accurately clamped, and facilitating subsequent screwing operations. The clamping sawtooth members 14 increase the friction force with the screw surface, prevent sliding, and increase the friction force by engaging with the screw surface through the serrated structure, ensuring that the screw does not slip during the rotation process and improving the screwing efficiency.

[0034] In this embodiment, on the back surfaces of the two centripetal clamping plate members 12, positioning cross bar members 10 are symmetrically welded on both sides of the piston rod. Each positioning cross bar member 10 transversely penetrates the adjacent edge vertical plate member 9 for centripetal movement and clamping positioning of the centripetal clamping plate member 12. Inverted L-shaped positioning vertical rods 15 are symmetrically welded on the circumferential outer wall of the rotating load-bearing disc 5. A positioning turntable 16 is rotatably connected to the circumferential side of one end of the tower-shaped load-bearing rod 2 close to the load-bearing support platform 4. One ends of the two L-shaped positioning vertical rods 15 far from the rotating load-bearing disc 5 are welded to the top surface of the positioning turntable 16.

[0035] In this embodiment, the L-shaped positioning vertical rod 15 is used to connect the rotating load-bearing disc 5 and the positioning turntable 16. By connecting with the positioning turntable 16, the rotation of the rotating load-bearing disc 5 is realized, ensuring that the rotating load-bearing disc 5 can rotate smoothly and achieving the precise alignment of the screw. The positioning turntable 16, as a part of the rotating mechanism, is used to transmit the rotational motion. By connecting with the L-shaped positioning vertical rod 15, the rotation of the rotating load-bearing disc 5 is realized, ensuring that the rotating load-bearing disc 5 can rotate smoothly and achieving the precise alignment of the screw.

[0036] In this embodiment, a sealed bearing 17 is press-fitted inside the center of the positioning turntable 16. The inner ring of the sealed bearing 17 is press-fitted on the circumferential outer wall of the tower-shaped load-bearing rod 2. When the rotating load-bearing disc 5 carries a load and rotates, the two L-shaped positioning vertical rods 15 can drive the positioning turntable 16 to rotate for the positioning of the rotating load-bearing disc 5. The sealed bearing 17, as the core component of the rotating mechanism, realizes the rotation of the rotating load-bearing disc 5. By means of press-fitting, it connects the positioning turntable 16 and the tower-shaped load-bearing rod 2, ensuring that the rotating load-bearing disc 5 can rotate smoothly and achieving the precise alignment of the screw.

[0037] In this embodiment, a rotating motor is longitudinally embedded inside the load-bearing support platform 4. The output shaft of the rotating motor is longitudinally connected to the bottom surface of the rotating load-bearing disc 5. The screw is placed in the inner cavity of the positioning stepped counterbore 11, and the centripetal clamping plate member 12 clamps the screw centripetally. Through the lifting of the hydraulic jack 8 and the drive of the rotating motor, the screw is screwed into the corresponding bolt hole at the bottom of the seat ring.

[0038] Working principle:

[0039] For this heavy-duty screw installation and positioning device, the tower-shaped load-bearing rod 2 and the installation base 3 are assembled to ensure that the entire structure is firmly installed on the ground. The load-bearing support platform 4 is welded to the top of the tower-shaped load-bearing rod 2, providing a support platform for the subsequent rotating load-bearing disc 5 and other components. The rotating load-bearing disc 5 is installed on the load-bearing support platform 4 through the sealed bearing 17 and the positioning turntable 16 to ensure its smooth rotation. The hydraulic jack 8 is fixed on the rotating load-bearing disc 5 and is used to adjust the height. The lifting and screwing tray 6 is installed on the top of the hydraulic jack 8 and is used to carry the screw.

[0040] The positioning stepped counterbore 11 is opened at the middle position of the top surface of the lifting and screwing tray 6 for the preliminary positioning of the screw. The edge vertical plate member 9 is integrally longitudinally connected to the two side edges of the top surface of the lifting and screwing tray 6 for fixing the centripetal clamping plate member 12. The centripetal clamping plate member 12 is installed between the inner walls of the two edge vertical plate members 9 for centripetally moving and clamping the screw. The clamping oil cylinder 7 is installed on the outside of the edge vertical plate member 9, and its piston rod penetrates the edge vertical plate member 9 and is connected to the centripetal clamping plate member 12 for controlling the movement of the centripetal clamping plate member 12. The positioning cross bar member 10 is welded to the back of the centripetal clamping plate member 12 and horizontally penetrates the adjacent edge vertical plate member 9 to ensure the smooth movement of the centripetal clamping plate member 12.

[0041] The clamping serrated members 14 are equidistantly arranged from top to bottom on the inner wall of the centripetal clamping plate member 12 for increasing the friction force with the screw. Place the screw to be installed in the positioning stepped counterbore 11 for preliminary positioning of the screw. Start the clamping oil cylinder 7 to move the centripetal clamping plate member 12 centripetally, and clamp the screw through the clamping groove portion 13 and the clamping serrated members 14 to ensure that the screw is stably clamped. Start the hydraulic jack 8 to lift the lifting and screwing tray 6 and the screw thereon to the required height so that the screw is in a suitable installation position. Drive the rotating load-bearing disc 5 to rotate through the rotating motor built in the load-bearing support platform 4, and then drive the lifting and screwing tray 6 and the screw to rotate, so that the screw is aligned with the installation position and starts to be screwed in.

[0042] When the screw is aligned with the installation position, continue to drive the screw to rotate through the rotating motor until the screw is completely screwed into the corresponding bolt hole at the bottom of the seat ring. After the screw is completely screwed in, release the clamping oil cylinder 7 to loosen the screw by the centripetal clamping plate member 12, and the hydraulic jack 8 descends to lower the lifting and screwing tray 6 and the structure thereon to the initial position to prepare for the next screw installation.

[0043] It should be noted that in this text, 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 terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0044] 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 principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heavy-duty screw installation and positioning device, characterized in that: include: The screw rod installation positioning assembly (1) comprises a tower-type load-bearing rod (2) and a load-bearing support platform (4) welded to the top of the tower-type load-bearing rod (2); The screw weighing lifting assembly comprises a rotating load-bearing plate (5) rotatably mounted on the top surface of a load-bearing support platform (4), a plurality of hydraulic jacks (8) fixedly mounted on the top surface of the rotating load-bearing plate (5), and a lifting and screwing tray (6) fixed on the top of the hydraulic jacks (8); The screw rod installation positioning assembly comprises a positioning stepped countersunk hole (11) provided in the middle of the top surface of the lifting and screwing tray (6), an edge vertical plate (9) integrally connected to the two side edges of the top surface of the lifting and screwing tray (6), and a centripetal clamping plate (12) respectively installed on the inner walls of the two edge vertical plates (9) for centripetally moving and clamping the screw rod; Among them, a clamping cylinder (7) is installed on the opposite side of the two edge upright plates (9), and the piston rod of the clamping cylinder (7) centripetally penetrates the edge upright plate (9) and is fixedly connected to the back of the centripetal clamping plate (12). A clamping groove part (13) for matching the clamping screw itself is opened in the middle position of the opposite side of the two centripetal clamping plates (12), so that the screw is located in the two clamping groove parts (13) spliced ​​together, clamped, positioned, lifted upward and screwed.

2. A heavy-duty screw installation and positioning device according to claim 1, characterized in that: The inner wall of each clamping groove portion (13) is provided with clamping serrations (14) equidistantly from top to bottom, and the clamping serrations (14) are matched and clamped on the outer wall of the peripheral side of the screw rod to increase friction.

3. A heavy-duty screw rod installation and positioning device according to claim 2, characterized in that: The back sides of the two centripetal clamping plates (12) are symmetrically welded with positioning cross bars (10) located on both sides of the piston rod. Each positioning cross bar (10) transversely penetrates the adjacent edge vertical plate (9) to provide centripetal movement, clamping and positioning for the centripetal clamping plates (12).

4. A heavy-duty screw rod installation and positioning device according to claim 3, characterized in that: The outer wall of the rotating load-bearing plate (5) is symmetrically welded with inverted L-positioning uprights (15); one end of the tower-type load-bearing rod (2) close to the load-bearing support platform (4) is rotatably connected to a positioning turntable (16); and the ends of the two L-positioning uprights (15) away from the rotating load-bearing plate (5) are both welded to the top surface of the positioning turntable (16).

5. A heavy-duty screw installation and positioning device according to claim 4, characterized in that: A sealed bearing (17) is interference-fitted inside the center of the positioning turntable (16), and the inner ring of the sealed bearing (17) is interference-fitted on the peripheral outer wall of the tower-type load-bearing rod (2), so that when the rotating load-bearing plate (5) rotates under load, the two L positioning upright rods (15) can drive the positioning turntable (16) to rotate to position the rotating load-bearing plate (5).

6. A heavy-duty screw installation and positioning device according to claim 5, characterized in that: A rotating motor is longitudinally embedded in the interior of the load-bearing support platform (4), and the output shaft of the rotating motor is longitudinally connected to the bottom surface of the rotating load-bearing plate (5).

7. A heavy-duty screw rod installation and positioning device according to claim 6, characterized in that: The inner cavity of the positioning stepped countersunk hole (11) carries a screw rod, and the centripetal clamping plate (12) centripetally clamps the screw rod, and the screw rod is screwed into the corresponding bolt hole at the bottom of the seat ring through the support of the hydraulic jack (8) and the drive of the rotary motor.

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