A hydraulic fastener assembly installation aid

Abstract

The utility model discloses a kind of water pressure fastening bolt assembly auxiliary installation device, belong to auxiliary installation technical field, its technical key points include rotating screw cylinder and the water pressure nut being set in rotating screw cylinder inside, the inside of the water pressure nut is provided with top plate, the surface of rotating screw cylinder is rotatably connected with connecting rod by bearing, the inside of the connecting rod is provided with mounting groove, the utility model is rotated by motor drive gear transmission system with rotating screw cylinder, the automatic tightening of water pressure nut is realized, avoid the difficulty of manual operation in narrow space, significantly improve installation efficiency, by the cooperation of first quick connector and connecting pipe, when water pressure nut rotates, second quick connector does not move, it is convenient to fill liquid, by the linkage design of guide rod, tension spring and limit pin, axial pre-tightening force is provided when nut and screw initial butt joint.

Description

Technical Field

[0001] This utility model belongs to the field of auxiliary installation technology, specifically relating to an auxiliary installation device for a water pressure fastening bolt assembly. Background Technology

[0002] Hydraulic fastening bolts are a type of fastener system that uses hydraulic principles to achieve high-precision preload control. They are widely used in fields with extremely high requirements for sealing and reliability, such as nuclear power, chemical industry, and shipbuilding. Mechanical products are assembled from many mechanical parts, and hydraulic fastening bolt assemblies are usually used to connect different mechanical parts.

[0003] A search revealed a Chinese patent with publication number CN211693147U, which discloses an installation structure for hydraulic bolts used in steam turbines. The structure includes hydraulic bolts and two mating flanges with opposing bolt mounting holes on the two mating flanges. However, the existing installation positions for some hydraulic bolts are relatively narrow, making it difficult for operators to install them using the normal installation method. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary installation device for hydraulic fastening bolt assemblies to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary installation device for a hydraulic fastening bolt assembly, comprising a rotating screw barrel and a hydraulic nut disposed inside the rotating screw barrel, the hydraulic nut having a top plate inside, a connecting rod rotatably connected to the surface of the rotating screw barrel via a bearing, an installation groove being formed inside the connecting rod, and a second gear being disposed inside the installation groove, a motor being mounted on the surface of the connecting rod, the output shaft of the motor passing through the surface of the connecting rod and being fixedly connected to the second gear, a first gear being meshed with the surface of the second gear, and the first gear being fixedly connected to the rotating screw barrel.

[0006] Preferably, the connecting rod has two handles symmetrically fixedly connected to its surface, and the first gear is located between the two bearings.

[0007] Preferably, a rotating plate is fixedly connected inside the rotating cylinder, and an infusion tube is fixedly connected inside the rotating plate. The end of the infusion tube facing the water pressure nut is inserted into the infusion port of the water pressure nut through a plug. A first quick connector is provided inside the rotating plate, and the first quick connector is rotatably connected to the end of the infusion tube away from the water pressure nut.

[0008] Preferably, the infusion tube has a Z-shaped structure, and the first quick connector is located at the axial center of the rotating plate.

[0009] Preferably, a connecting tube is inserted into the end of the first quick connector away from the rotating plate, and a second quick connector is fixedly connected to the end of the connecting tube away from the first quick connector. The second quick connector is located at the end of the connecting rod away from the bearing.

[0010] Preferably, a guide rod is slidably connected inside the rotating plate, a bracket is fixedly connected to the surface of the rotating plate, a tension spring is wound around the surface of the guide rod, and the two ends of the tension spring are fixedly connected to the guide rod and the bracket, respectively.

[0011] Preferably, the guide rod has a positioning hole on its surface, and a limit pin is provided inside the positioning hole. A limit plate is fixedly connected to the side of the bracket near the limit pin. The limit plate and the limit pin fit together. A magnet is provided inside the positioning hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model uses a motor-driven gear transmission system to rotate the screw barrel, thereby automatically tightening the water pressure nut. This avoids the difficulties of manual operation in confined spaces, significantly improves installation efficiency, and is especially suitable for working environments with limited space or requiring high-precision alignment.

[0014] 2. This utility model achieves the goal of keeping the second quick connector stationary when the water pressure nut is rotated by the cooperation of the first quick connector and the connecting pipe, which facilitates liquid injection.

[0015] 3. This utility model provides axial preload when the nut and screw are initially connected through the linkage design of the guide rod, tension spring and limit pin. When the nut is compressed, the limit mechanism is automatically released and the tension spring pushes the nut and screw to quickly engage, effectively avoiding thread misalignment or free rotation, ensuring successful installation in one go and reducing the risk of rework. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the first quick connector and connecting pipe structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the horizontal cross-sectional structure of the rotating plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the hydraulic nut and infusion tube structure of this utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle.

[0021] In the diagram: 1. Rotating screw; 2. First gear; 3. Bearing; 4. Connecting rod; 5. Second gear; 6. Motor; 7. Hydraulic nut; 8. Top plate; 9. Handle; 10. Turning plate; 11. First quick connector; 12. Connecting pipe; 13. Second quick connector; 14. Infusion tube; 15. Guide rod; 16. Tension spring; 17. Bracket; 18. Limiting pin; 19. Limiting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides an auxiliary installation device for a hydraulic fastening bolt assembly, including a rotating screw barrel 1 and a hydraulic nut 7 disposed inside the rotating screw barrel 1. A top plate 8 is provided inside the hydraulic nut 7. A connecting rod 4 is rotatably connected to the surface of the rotating screw barrel 1 via a bearing 3. An installation groove is provided inside the connecting rod 4, and a second gear 5 is disposed inside the installation groove. A motor 6 is mounted on the surface of the connecting rod 4. The output shaft of the motor 6 passes through the surface of the connecting rod 4 and is fixedly connected to the second gear 5. A first gear 2 is meshed with the surface of the second gear 5. The first gear 2 is fixedly connected to the rotating screw barrel 1. The surface of the connecting rod 4... The fixed connection has two handles 9, and the first gear 2 is located between two bearings 3. When it is necessary to install the water pressure nut 7, insert the water pressure nut 7 into the interior of the rotating screw 1 so that the top plate 8 faces outward. Then hold the two handles 9 and place the rotating screw 1 at the screw rod. Then connect the motor 6 to the external power supply and start it. The motor 6 will rotate inside the mounting slot and drive the rotating screw 1 to rotate through the first gear 2. Because of the bearings 3, the connecting rod 4 will not rotate. By rotating the top plate 8 through the rotating screw 1, the top plate 8 can be screwed onto the surface of the screw rod, avoiding the need to manually tighten the top plate 8 in a narrow space.

[0024] In this embodiment, a rotating plate 10 is fixedly connected inside the rotating screw cylinder 1, and an infusion tube 14 is fixedly connected inside the rotating plate 10. The end of the infusion tube 14 facing the water pressure nut 7 is inserted into the infusion port of the water pressure nut 7 through a plug. A first quick connector 11 is provided inside the rotating plate 10. The first quick connector 11 is rotatably connected to the end of the infusion tube 14 away from the water pressure nut 7. The infusion tube 14 has a Z-shaped structure, and the first quick connector 11 is located at the axial center of the rotating plate 10. A connecting tube 12 is inserted into the end of the first quick connector 11 away from the rotating plate 10. A second quick connector 13 is fixedly connected to the end of the connecting tube 12 away from the first quick connector 11. The second quick connector 13 is located on the connecting rod 4 away from the bearing 3. At one end, to facilitate the injection of liquid into the hydraulic nut 7 within a confined space, the rotating plate 10 rotates simultaneously with the rotating cylinder 1, causing the infusion tube 14 to rotate around the axis of the rotating plate 10. This allows the first quick connector 11 to remain in the same position for easy liquid injection. When liquid injection is required, an external infusion pump is inserted into the second quick connector 13, and liquid is directed into the connecting pipe 12. The liquid flows from the connecting pipe 12 into the infusion tube 14 and eventually into the hydraulic nut 7. As the liquid inside the hydraulic nut 7 accumulates, the top plate 8 pushes outward, causing the hydraulic nut 7 to stretch on the screw surface, resulting in a tighter connection.

[0025] In this embodiment, a guide rod 15 is slidably connected inside the rotating plate 10, and a bracket 17 is fixedly connected to the surface of the rotating plate 10. A tension spring 16 is wound around the surface of the guide rod 15, and both ends of the tension spring 16 are fixedly connected to the guide rod 15 and the bracket 17, respectively. A positioning hole is opened on the surface of the guide rod 15, and a limit pin 18 is provided inside the positioning hole. A limit plate 19 is fixedly connected to the side of the bracket 17 near the limit pin 18. The limit plate 19 and the limit pin 18 fit together. A magnet is provided inside the positioning hole to prevent the water pressure nut 7 from being aligned with the screw but not moving in place during rotation, thus failing to achieve thread connection. Next, after inserting the top plate 8 into the rotating screw cylinder 1, pull the limiting pin 18 out of the positioning hole, but do not remove it from the guide rod 15. Then, lock the limiting pin 18 onto the surface of the limiting plate 19. At this time, the tension spring 16 is under tension. Then, align the hydraulic nut 7 with the screw and press it. The hydraulic nut 7 will slide outward under force. The limiting pin 18 will be removed from the limiting plate 19 due to the sliding of the guide rod 15, and will be pulled into the positioning hole due to the magnetic attraction. This will loosen the limiting of the guide rod 15 at both ends. The tension spring 16 will exert force on the hydraulic nut 7 in the direction of the screw due to its elastic potential energy to help them connect to each other through the thread.

[0026] The use of this utility model involves the following steps:

[0027] S1: When it is necessary to install the water pressure nut 7, insert the water pressure nut 7 into the interior of the rotating screw 1, so that the top plate 8 faces outward. Then hold the two handles 9 and place the rotating screw 1 at the screw rod. Then connect the motor 6 to the external power supply and start it. The motor 6 will rotate inside the mounting slot and drive the rotating screw 1 to rotate through the first gear 2. Because of the bearing 3, the connecting rod 4 will not rotate. By rotating the top plate 8 through the rotating screw 1, the top plate 8 can be screwed onto the surface of the screw rod, avoiding the need to manually tighten the top plate 8 in a narrow space.

[0028] S2: To facilitate the injection of liquid into the hydraulic nut 7 in a confined space, the rotating plate 10 rotates simultaneously with the rotating cylinder 1, causing the infusion tube 14 to rotate around the axis of the rotating plate 10. This allows the first quick connector 11 to remain in the same position for easy liquid injection. When liquid injection is required, an external infusion pump is inserted into the second quick connector 13, and liquid is directed into the connecting pipe 12. The liquid flows from the connecting pipe 12 into the infusion tube 14 and eventually into the hydraulic nut 7. As the liquid inside the hydraulic nut 7 accumulates, the top plate 8 pushes outward, causing the hydraulic nut 7 to stretch on the screw surface, resulting in a tighter connection.

[0029] S3: To prevent the hydraulic nut 7 from being aligned with the screw but remaining stationary during rotation and failing to achieve a threaded connection, after inserting the top plate 8 into the rotating screw cylinder 1, pull the limiting pin 18 out of the positioning hole, but do not remove it from the guide rod 15. Then, lock the limiting pin 18 onto the surface of the limiting plate 19. At this time, the tension spring 16 is under tension. Then, align the hydraulic nut 7 with the screw and press it down. The hydraulic nut 7 will slide outward under force. The limiting pin 18 will disengage from the limiting plate 19 due to the sliding of the guide rod 15, and will be drawn into the positioning hole due to the magnetic attraction. This will loosen the limiting of both ends on the guide rod 15. The tension spring 16 will exert force on the hydraulic nut 7 in the direction of the screw due to its elastic potential energy to help them achieve a threaded connection.

[0030] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0031] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An auxiliary installation device for a hydraulic fastening bolt assembly, comprising a rotating screw cylinder (1) and a hydraulic nut (7) disposed inside the rotating screw cylinder (1), wherein a top plate (8) is disposed inside the hydraulic nut (7), characterized in that: The surface of the rotating screw (1) is rotatably connected to a connecting rod (4) via a bearing (3). The connecting rod (4) has an installation groove inside, and a second gear (5) is provided inside the installation groove. A motor (6) is installed on the surface of the connecting rod (4). The output shaft of the motor (6) passes through the surface of the connecting rod (4) and is fixedly connected to the second gear (5). A first gear (2) is meshed with the surface of the second gear (5). The first gear (2) is fixedly connected to the rotating screw (1).

2. The auxiliary installation device for a hydraulically tightened bolt assembly according to claim 1, characterized in that: The surface of the connecting rod (4) is symmetrically fixedly connected to two handles (9), and the first gear (2) is located between the two bearings (3).

3. The auxiliary installation device for a hydraulically tightened bolt assembly according to claim 1, characterized in that: A rotating plate (10) is fixedly connected inside the rotating screw (1), and an infusion tube (14) is fixedly connected inside the rotating plate (10). The end of the infusion tube (14) facing the water pressure nut (7) is inserted into the infusion port of the water pressure nut (7) through a plug. A first quick connector (11) is provided inside the rotating plate (10), and the first quick connector (11) is rotatably connected to the end of the infusion tube (14) away from the water pressure nut (7).

4. The auxiliary installation device for a hydraulically tightened bolt assembly according to claim 3, characterized in that: The infusion tube (14) has a Z-shaped structure, and the first quick connector (11) is located at the axial position of the rotating plate (10).

5. The auxiliary installation device for a hydraulically tightened bolt assembly according to claim 4, characterized in that: A connecting tube (12) is inserted into the end of the first quick connector (11) away from the rotating plate (10). A second quick connector (13) is fixedly connected to the end of the connecting tube (12) away from the first quick connector (11). The second quick connector (13) is located at the end of the connecting rod (4) away from the bearing (3).

6. The auxiliary installation device for a hydraulically tightened bolt assembly according to claim 5, characterized in that: The rotating plate (10) is slidably connected to a guide rod (15), and a bracket (17) is fixedly connected to the surface of the rotating plate (10). A tension spring (16) is wound around the surface of the guide rod (15), and the two ends of the tension spring (16) are fixedly connected to the guide rod (15) and the bracket (17) respectively.

7. The auxiliary installation device for a hydraulically tightened bolt assembly according to claim 6, characterized in that: The guide rod (15) has a positioning hole on its surface, and a limit pin (18) is provided inside the positioning hole. A limit plate (19) is fixedly connected to the side of the bracket (17) near the limit pin (18). The limit plate (19) and the limit pin (18) fit together. A magnet is provided inside the positioning hole.

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