CN204434083U - Boats and ships rudder bush is fixed, handling auxiliary device - Google Patents

Abstract

The utility model discloses an auxiliary device for fixing and lifting the rudder button bush of a ship. The device adopts four hooks (4) to drag the bottom of the bush to support the whole bush. Eight screw rods (9) utilize two The joint (2) is connected with the hook to form two upper and lower sections, and a central load rod (1) is used in the middle to connect the two sections together. The sleeve (8), spring (5), and pressing plate are connected between the hook and the screw rod (6) is locked with the nut (7), and the tightness of the nut can be adjusted to change the supporting force of the hook and the bushing, so as to ensure the convenience of use and disassembly of the auxiliary tooling. The utility model has the advantages that the device can be used universally, can be used repeatedly, and costs can be reduced. If any parts are damaged, they can be replaced separately, which is convenient for maintenance, flexible in the use process, and improves the overall efficiency of construction. And when using the auxiliary equipment of the tooling device of the present utility model for cooling, lifting and installation, there is no need to directly contact the equipment manually, avoiding the damage caused by low temperature to the human body, saving time and effort, and the use and lifting are simple and convenient.

Description

Ship Rudder Knob Bushing Fixing and Lifting Auxiliary Device

technical field

The invention relates to a fixing and hoisting auxiliary device for bushings in marine engineering, more specifically, to a fixing and hoisting auxiliary device for ship rudder button bushings and stern tube bushings.

Background technique

Marine equipment (especially large-scale equipment), such as: rudder button bushing, stern tube bushing and other devices need to be cooled at low temperature to achieve their shrinkage before installation, and the equipment needs to be installed immediately after cooling, and certain devices are required for cooling and installation Auxiliary lifting and installation.

Take the installation of ship rudder button bushings as an example, when the bushings are cold installed, they need to be placed in a low-temperature (minus 193°C) liquid environment, and the cooling time is as long as 40-50 minutes. After the cooling is completed, the tooling needs to be replaced for lifting to installation on board. Its disadvantages are:

1. It takes a long time to replace the tooling, which may cause the bushing to expand again after cooling down, resulting in a decrease in the shrinkage of the bushing;

2. When re-changing the tooling, it is necessary to touch the bushing of the steering button, which may cause low-temperature burns and pose a safety hazard;

3. When changing the tooling installation, it cannot be installed in place at one time, and many people are required to cooperate in the construction, which is time-consuming and laborious;

4. A large amount of crane time is occupied, resulting in a great waste of production costs.

Contents of the invention

The invention relates to an auxiliary device used for cooling and installing ship rudder bushings in ship equipment construction. In addition, the device can also be used to adjust the installation and positioning of stern tube bushes in ship equipment to improve the convenience and speed of equipment installation. The present invention aims to solve the problem that the marine equipment in the prior art can be cooled for a long time in an ultra-low temperature environment. After the cooling reaches the corresponding compression amount, it can be directly hoisted onto the ship and installed in place without the need to replace the auxiliary tooling device midway.

In order to achieve the above object, the present invention provides a ship rudder button bushing fixing and lifting auxiliary device, which includes a central load bar with a lifting ring at the top, two upper and lower places of the central load bar are provided with platform stages, and using the steps and positioning The two ring joints are fixed by means of nuts matching the threaded sections; the upper and lower two ring joints are provided with four radial threaded holes at equiangular distances on the ring wall, and a lead screw is screwed into the threaded holes, and the lead screw The outer end of the casing is plugged with a sleeve; the other end of the sleeve is a solid stud; each two screw screws at the upper and lower positions correspond to each other and are screwed to a parallel central load rod through the respective solid studs On the provided rod-type hook, the lower end of the rod-type hook is provided with a horizontal hanging structure outward. There are therefore four rod-type hooks in total, which are centrally symmetrically arranged with the central load rod as the center, and the low-end hanging structures of the four hooks are used to simultaneously support the bottom side end surfaces of the bushing and the bushing 99 .

In a preferred manner, there is a spring on the outside of the sleeve, one end of the spring leans against the rod-type hook, and the other end is defined by a lock nut screwed on the lead screw through a pressure plate.

The advantage of the present invention is that the tooling device of the present invention can be used universally, and can be used repeatedly to reduce costs, and can be successfully used in cooling, hoisting and installation of the equipment by using the tooling device of the present invention, and there is no need for replacement in the middle Auxiliary tooling saves trouble and effort, and is easy to use.

Description of drawings

Fig. 1 is a schematic diagram of the mid-section structure of the auxiliary device of the present invention.

FIG. 2 is a schematic diagram of the enlarged structure at A in FIG. 1 .

FIG. 3 is a schematic diagram of the enlarged structure at B in FIG. 1 .

Fig. 4 is a schematic structural diagram of the use state of the auxiliary device of the present invention.

Detailed ways

As shown in FIGS. 1 to 3 , it is a schematic structural diagram of a lifting auxiliary device for fixing a ship rudder bushing, including a central load rod 1 , a hook 4 , a screw rod 9 , and a lifting ring 10 . The center load rod 1 is provided with a joint 2 and a positioning nut 3, the joint 2 is connected with a screw 9, the positioning nut 3 fixes the upper end of the joint 2, and the screw 9 is connected with the hook 4 through threads; the spring 5 , Sleeve 8, pressing plate 6 and nut 7 are set between the screw mandrel 9 and the hook 4;

The distance between the 9 screw and the 4 hook can be changed by adjusting the tightness of the 7 nut on the 9 screw: if the nut 7 is tightened, the distance between the sleeve 8 and the screw 9 will be lengthened by the pressure plate 6, and by compression The spring 5 extends the distance between the casing 8 and the screw rod 9 to the required length and maintains the spring pressure, so that the equipment to be installed is in a fixed state; if the nut 7 is loosened, the spring 5 is stretched and the spring tension is lost , then the screw mandrel 9 stretches into the casing 8, shortening the distance between the screw mandrel 9 and the hook 4, and at this moment the device is in an unstressed state and can be easily removed from the bushing. To sum up, by adjusting the nut, the supporting force between the hook and the bushing can be adjusted appropriately, so that the bushing can be kept stable during cooling, lifting and installation, and will not fall off or be removed from the bushing. The tooling device can be placed in a low-temperature liquid environment together with the bushing, and the bushing can be lifted and installed directly after cooling, without the need to replace the auxiliary tooling device midway.

As shown in Figure 4, it is a schematic diagram of the use of the lifting auxiliary device for fixing the ship's rudder bushing. First, assemble the device: install two joints 2 at both ends of the central load rod 1 respectively, and lock the joints 2 with a positioning nut 3 . Then four screw mandrels 9 are respectively connected to the four inner holes of the joint 2 to form two cross-shaped planes up and down. Nut 7, pressing plate 6, casing 8 and spring 5 are sequentially put on the screw mandrel 9, so that each screw mandrel 9 have the ability to adjust the top support force. Finally, eight screw mandrels 9 are connected with four hooks 4 to form an integral tooling, and a suspension ring 10 is installed on the upper end of the central load bar.

The specific use process of the device is as follows: first adjust the nut 7 inwardly, so that the whole device is in a contracted state, so as to ensure that the outer diameter of the frock is smaller than the inner diameter of the bushing 99 that needs to be lifted. Then the device is inserted into the inner hole of the bushing, and the nut 7 is tightened so that the four right-angled plates at the bottom of the hook 4 support the bushing 99, and ensure that the outer circular surface of the hook 4 fits closely with the inner wall of the bushing. Finally, the compression amount of the spring 5 is adjusted by the nut 7 to ensure that the upper and lower eight screw rods 9 are stressed evenly and stably. This device and bushing 99 are connected as a whole like this, can carry out the hoisting installation operation of bushing 99 by suspension ring 10. After hoisting, check again whether the support point of the hook 4 is evenly and firmly stressed, and adjust the tightness of the spring 5 through the nut 7 to ensure the safety and reliability of the bush hoisting process. The auxiliary device for fixing and lifting the rudder button bush of a ship can complete the cooling, lifting and installation of the bush 99 at one time, during which no other auxiliary tooling needs to be replaced. After the bushing 99 was installed, the outer diameter of the whole frock was smaller than the inner diameter of the equipment by loosening the nut 7, so that the frock can be easily taken out for reuse.

The advantage of the present invention is that it is safe and reliable in use, does not need manual direct contact with the equipment, and avoids the harm caused by low temperature to the human body. The device is flexible in use and can be used repeatedly. Improve construction efficiency and reduce operating costs.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (2)

1. A ship rudder button bushing fixing, lifting auxiliary device, is characterized in that, comprises the center load bar (1) that suspension ring (10) is arranged at the top, and described center load bar (1) is provided with platform stage at two places up and down, And use the step and the positioning nut (3) to fix the two ring joints (2) in a manner that cooperates with the threaded section; The upper and lower two annular joints (2) have four radial threaded holes at equiangular distances on the ring wall, and a lead screw (9) is screwed in the threaded holes, and the outer end of the lead screw (9) is screwed The sleeve (8) is connected; the other end of the sleeve (8) is a solid stud; every two upper and lower lead screws correspond to each other and are screwed to a parallel central load rod through the solid stud (1) On the provided rod-type hook (4), the lower end of the rod-type hook (4) is provided with a horizontal hanging structure outward. 2. According to claim 1, the ship rudder button bushing fixing and lifting auxiliary device is characterized in that, there is a spring (5) on the outside of the sleeve (8), and one end of the spring (5) leans against On the rod-type hook (4), the other end is defined by a lock nut (7) screwed on the lead screw (9) through a pressure plate (6).