Large pin shaft for mounting lifting lugs of four-pile jacket

Abstract

The utility model relates to a large-scale pin shaft for mounting four-pile jacket lifting lugs, which is applied to the field of component mounting and comprises a pair of lower supports mounted on a jacket base surface, upper supports are mounted at the upper ends of the lower supports, the upper ends of the two upper supports are connected with pin shafts in a sliding manner, lifting lug hole pieces are arranged on the jacket base surface, and the lifting lug hole pieces are connected with the pin shafts in a sliding manner. A plurality of long kidney-shaped holes are formed in the lower end of the upper support, the inner ends of the long kidney-shaped holes are in threaded connection with bolts, an arc-shaped notch is formed in the upper end of the upper support, an arc-shaped inner shaft is fixedly connected between the left inner wall and the right inner wall of the arc-shaped notch, and the outer end of the arc-shaped inner shaft is rotationally connected with a plurality of power-assisted rolling wheels. According to the large pin shaft for mounting the lifting lug of the four-pile jacket, the hoisting mounting tool structure comprises the upper support and the lower support which are matched with each other, so that the large pin shaft can conveniently, smoothly and safely penetrate into the lifting lug hole piece, time and labor are saved, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to a large pin shaft used for installing a lifting lug of a four-pile pipe rack, and in particular to a large pin shaft used for installing a lifting lug of a four-pile pipe rack, which is applied in the field of component installation. Background Art

[0002] The lifting lug is a load-bearing component installed on the equipment for lifting. The lifting lug is an important connecting component in equipment lifting, which is directly related to the safety of large equipment lifting. The lifting lugs of the four-pile jacket guide structure are generally pin-type lifting lugs. The offshore hull requires a strong load-bearing range, so the processing efficiency and service life of the large pin installed in the four-pile jacket lifting lug become the top priority.

[0003] The specification of Chinese patent CN209778078U discloses an improved large crane end beam hinged shaft end fixing structure, including a pin shaft and a shaft end extension structure. The utility model has the characteristics of eliminating the hidden danger of the pin shaft withdrawing after the clamping plate and the end plate fixing bolts are broken, eliminating the risk of the end plate falling, eliminating the pin shaft wear damage caused by the rotation of the pin shaft and contact friction, and improving the online service life of the pin shaft.

[0004] The specification of Chinese patent CN210265438U discloses a large pin shaft, belonging to the technical field of mechanical connection structure. The large pin shaft includes round steel and a hexagonal head, which greatly improves the processing efficiency, reduces the waste of raw materials, and reduces the processing cost.

[0005] The four-pile conductor frame guide structure lifting ears use pin-type lifting ears. Because the lifting weight is heavy and the lifting pin is large in size, a single pin weighs about 300kg, and it is impossible to move and install it smoothly by manpower. In addition, the hull shakes a lot at sea, and the crane hook also shakes, making it very difficult to align the pin at high altitude. Utility Model Content

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is that the pin-type lifting ears used in the lifting ears of the guide structure of the four-pile conductor rack cannot be smoothly transported and installed by manpower, and the hull shakes greatly at sea, and the crane hook also shakes, making it very difficult to align the pin at high altitude.

[0007] In order to solve the above problems, the utility model provides a large pin shaft for installing the lifting ears of a four-pile conductor frame, comprising a pair of lower supports installed on the base surface of the conductor frame, an upper support is installed on the upper end of the lower support, the upper ends of the two upper supports are slidably connected with the pin shaft, the base surface of the conductor frame is provided with a lifting ear hole piece, the lower end of the upper support is provided with a plurality of long waist holes, the inner ends of the long waist holes are threadedly connected with bolts, the upper end of the upper support is provided with an arc-shaped groove, an arc-shaped inner shaft is fixedly connected between the left and right inner walls of the arc-shaped groove, and the outer end of the arc-shaped inner shaft is rotatably connected with a plurality of power-assisting rollers.

[0008] In the above-mentioned large pin shaft used for installing the lifting lug of the four-pile conductor rack, the lifting and installation tooling structure of this scheme includes an upper support and a lower support that cooperate with each other, so that the large pin shaft can be easily, smoothly and safely inserted into the lifting lug hole, saving time, labor and high efficiency.

[0009] As a further improvement of the present application, the pin shaft extends into the lifting ear hole member, and the pin shaft and the lifting ear hole member are arranged in parallel.

[0010] As a further improvement of the present application, a plurality of bolts penetrate inside and outside of the corresponding lower supports, and a plurality of power-assisting rollers are arranged at equal distances.

[0011] As a further improvement of the present application, a plurality of power-assisting rollers are in contact with the pin shaft, and a wear-resistant layer is fixedly connected to the outer end of the power-assisting roller.

[0012] As another improvement of the present application, an arc-shaped storage cavity is provided on the lower inner wall of the arc-shaped slot, and a liquid inlet is fixedly connected to the right side of the upper end of the arc-shaped storage cavity.

[0013] As another improved supplement of the present application, a sponge arc layer is fixedly connected to the upper end of the arc-shaped storage cavity, and the sponge arc layer is communicated with the arc-shaped storage cavity.

[0014] As another improved supplement of the present application, the arc-shaped storage cavity is in contact with the power-assisting roller, and the inner end of the arc-shaped storage cavity is filled with lubricating oil.

[0015] In summary, the lifting and installation tooling structure of the present scheme includes an upper support and a lower support which cooperate with each other, so that the large pin shaft can be easily, smoothly and safely passed through the lifting ear hole, which saves time, labor and efficiency. At the same time, during the process of manually pushing the pin shaft, a plurality of power-assisting rollers in contact with the pin shaft are arranged in the upper support. The power-assisting rollers can generate a rolling force to assist in the process of the pin shaft moving forward, so that the displacement installation operation between the two can be carried out more quickly and labor-savingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a side view of the installation method of the first embodiment of the present application;

[0017] Figure 2 This is a front view of the installation method of the first embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of an upper support according to a first embodiment of the present application;

[0019] Figure 4 This is an axonometric diagram of the upper support and the lower support of the first embodiment of the present application;

[0020] Figure 5 This is an enlarged view of the upper support of the second embodiment of the present application;

[0021] Figure 6 This is a front cross-sectional view of an upper support according to a second embodiment of the present application;

[0022] Figure 7 For the second implementation of this application Figure 6 Partially truncated and enlarged image.

[0023] Description of the numbers in the figure:

[0024] 1. Upper support; 2. Lower support; 3. Long waist hole; 4. Bolt; 5. Arc-shaped notch; 6. Arc-shaped inner shaft; 7. Power-assisted roller; 8. Wear-resistant layer; 9. Liquid inlet; 10. Arc-shaped storage cavity; 11. Sponge arc layer; 13. Pin shaft; 14. Lifting ear hole. DETAILED DESCRIPTION

[0025] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0026] The first implementation method:

[0027] Figure 1-4 A large pin for installing the lifting ears of a four-pile conductor frame is shown, comprising a pair of lower supports 2 installed on the base surface of the conductor frame, an upper support 1 is installed on the upper end of the lower support 2, a pin 13 is slidably connected to the upper ends of the two upper supports 1, a lifting ear hole 14 is provided on the base surface of the conductor frame, a plurality of long waist holes 3 are opened on the lower end of the upper support 1, the inner ends of the long waist holes 3 are threadedly connected with bolts 4, an arc-shaped notch 5 is opened on the upper end of the upper support 1, the pin 13 extends into the lifting ear hole 14, the pin 13 and the lifting ear hole 14 are arranged in parallel, and a plurality of bolts 4 pass through the corresponding lower supports 2 inside and outside.

[0028] Figure 1-4 It is shown that an arc-shaped inner shaft 6 is fixedly connected between the left and right inner walls of the arc-shaped groove 5, and a plurality of power-assisting rollers 7 are rotatably connected to the outer end of the arc-shaped inner shaft 6. The plurality of power-assisting rollers 7 are equidistantly arranged, and the plurality of power-assisting rollers 7 are all in contact with the pin shaft 13. The outer ends of the power-assisting rollers 7 are fixedly connected with a wear-resistant layer 8. During the process of manually pushing the pin shaft 13, a plurality of power-assisting rollers 7 in contact with the pin shaft 13 are arranged in the upper support 1. The power-assisting rollers 7 can generate a rolling force to assist in the process of the pin shaft 13 moving forward, so that the displacement installation operation between the two can be carried out more quickly and labor-savingly.

[0029] Figure 1-4It is shown that the lifting and installation tooling structure of this scheme includes an upper support 1 and a lower support 2 that cooperate with each other. The lower support 2 is fixed and fixed to the base surface of the pipe frame by binding or welding. The upper support 1 and the lower support 2 are connected by bolts 4. The long waist hole 3 of the upper support 1 can be used to adjust the height of the upper support 1 for accurate alignment. Before installing the power-assisted roller 7, first adjust the upper support 1 to the center of the ear hole 14, use an external crane to lie the pin 13 in the upper support 1 in advance, and the construction personnel use a hand-pushing method to push the upper support 1 into the ear hole 14 until a small part of the pin 13 enters the ear hole 14. Because there is a step at the end of the pin shaft 13, when it is pushed to the step surface, the first upper support 1 interferes with the step surface of the shaft and cannot be pushed forward. Pause and remove the bolt 4 between the first upper support 1 and the lower support 2 on the tooling through the thread. The upper support 1 on this piece can slide down automatically, and the pin shaft 13 can continue to be pushed forward for installation. According to the above operation, remove the second upper support 1, make it slide down automatically, and continue to push the shaft 13 into the lifting ear hole 14 until the entire pin shaft 13 is installed in the lifting ear hole 14. The design of the pin shaft 13 installation tooling can make the large pin shaft 13 easily, smoothly and safely pass through the lifting ear hole 14, which saves time, labor and has high efficiency.

[0030] The second implementation method:

[0031] Figure 5-7 A large pin shaft for installing a four-pile conductor rack lifting ear is shown, the lower inner wall of the arc-shaped slot 5 is provided with an arc-shaped storage cavity 10, the upper right side of the arc-shaped storage cavity 10 is fixedly connected with a liquid inlet 9, the upper end of the arc-shaped storage cavity 10 is fixedly connected with a sponge arc layer 11, the sponge arc layer 11 is connected to the arc-shaped storage cavity 10, the arc-shaped storage cavity 10 is in contact with the power-assisting roller 7, and the inner end of the arc-shaped storage cavity 10 is filled with lubricating oil.

[0032] Figure 5-7 It is shown that an arc-shaped storage cavity 10 filled with lubricating oil is provided on the lower side of the arc-shaped groove 5, and the sponge arc layer 11 is soaked with the lubricating oil in the arc-shaped storage cavity 10 connected thereto and contacts with the rolling power-assisting roller 7, which not only makes the rolling path of the power-assisting roller 7 smoother, but also allows the surface of the pin shaft 13 to be coated with lubricating oil, making it smoother and less likely to get stuck when passing through the ear hole 14.

[0033] In view of current practical needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A large pin for installing a four-pile pipe frame lifting lug, characterized in that: The invention comprises a pair of lower supports (2) mounted on the base surface of the catheter frame, an upper support (1) being mounted on the upper end of the lower support (2), a pin shaft (13) being slidably connected to the upper ends of the two upper supports (1), a lifting ear hole (14) being arranged on the base surface of the catheter frame, a plurality of long waist holes (3) being provided at the lower end of the upper support (1), a bolt (4) being threadedly connected to the inner end of the long waist hole (3), an arc-shaped slot (5) being provided at the upper end of the upper support (1), an arc-shaped inner shaft (6) being fixedly connected between the left and right inner walls of the arc-shaped slot (5), and a plurality of power-assisting rollers (7) being rotatably connected to the outer end of the arc-shaped inner shaft (6).

2. A large pin for installing a four-pile pipe frame lifting lug according to claim 1, characterized in that: The pin shaft (13) extends into the lifting ear hole piece (14), and the pin shaft (13) and the lifting ear hole piece (14) are arranged in parallel.

3. A large pin for installing a four-pile pipe frame lifting lug according to claim 1, characterized in that: The plurality of bolts (4) penetrate inside and outside of the corresponding lower support (2), and the plurality of assist rollers (7) are arranged at equal distances.

4. A large pin for installing a four-pile pipe frame lifting lug according to claim 1, characterized in that: The plurality of power-assisting rollers (7) are in contact with the pin shaft (13), and the outer ends of the power-assisting rollers (7) are fixedly connected with a wear-resistant layer (8).

5. The large pin for installing the lifting lugs of a four-pile pipe rack according to claim 1, characterized in that: The lower inner wall of the arc-shaped notch (5) is provided with an arc-shaped storage cavity (10), and the upper right side of the arc-shaped storage cavity (10) is fixedly connected with a liquid inlet (9).

6. A large pin for installing a four-pile pipe frame lifting lug according to claim 5, characterized in that: The upper end of the arc-shaped storage chamber (10) is fixedly connected with a sponge arc layer (11), and the sponge arc layer (11) is in communication with the arc-shaped storage chamber (10).

7. A large pin for installing a four-pile pipe frame lifting lug according to claim 5, characterized in that: The arc-shaped storage cavity (10) is in contact with the power-assisting roller (7), and the inner end of the arc-shaped storage cavity (10) is filled with lubricating oil.

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