CN103433547B - Rotary-type symmetrical crank and swing block flexible pipeline inner wall supporting device - Google Patents

Abstract

The invention relates to a rotary symmetric crank rocker flexible pipe inner wall support device used in the technical field of discarded offshore drilling well pipes and its drilling platform support standpipe cutting equipment. It is characterized in that it includes an indexing mechanism and an inner wall supporting mechanism. The indexing mechanism includes an indexing fixed shaft, and the upper part of the indexing fixed shaft is provided with an indexing mechanism fixing plate, and the indexing mechanism AC servo motor is fixed by the indexing mechanism reducer. On the fixed plate of the indexing mechanism, the inner wall support mechanism includes the fixed plate of the AC servo motor of the inner wall support mechanism, and the AC servo motor of the inner wall support mechanism is fixed on the fixed plate of the AC servo motor of the inner wall support mechanism through the reducer of the inner wall support mechanism. Two cranks are arranged symmetrically on the lower part of the indexing fixed shaft, each crank is connected with the rocker through a connecting shaft, and the front end of the rocker is provided with a supporting roller. It realizes the effective removal of offshore abandoned pipes without polluting the environment, and is safe and convenient to use and has strong adaptability.

Description

Rotary symmetrical crank rocker flexible pipeline inner wall support device

Technical field:

The invention relates to the technical field of cutting equipment used for discarded offshore drilling well pipes and their drilling platform support standpipes, in particular to a rotary symmetric crank rocker flexible pipe inner wall support device.

Background technique:

In the prior art, the traditional treatment method is adopted for the discarded offshore drilling well pipes and their drilling platform support risers: completely discarded, and the existing problem is that the abandoned pipes in the offshore will affect the safety of marine traffic; artificial methods are used along the The outer wall of the discarded pipe is removed. The problem is that the removal efficiency is low and it is impossible to remove it completely. Generally, there will be residues under the water, which will also affect the safety of marine traffic. The problem of removing it by blasting is that It will affect the ecology and pollute the environment; at present, the relevant national departments of our country require that the abandoned pipes in the offshore must be removed above 3m underwater without polluting the environment, and the traditional methods can no longer meet the requirements.

Invention content:

The invention provides a rotary symmetric crank rocker flexible pipeline inner wall support device aimed at the defects in the prior art, thereby effectively solving the problems in the prior art.

The solution adopted by the present invention to solve the technical problem is: the rotary symmetrical crank rocker flexible pipeline inner wall support device is characterized in that it includes an indexing mechanism and an inner wall supporting mechanism, and the indexing mechanism includes an indexing fixed shaft , the upper part of the fixed shaft of the indexing mechanism is provided with a fixed plate of the indexing mechanism, the AC servo motor of the indexing mechanism is fixed on the fixed plate of the indexing mechanism through the reducer of the indexing mechanism, and the power output shaft of the reducer of the indexing mechanism is provided with an indexing mechanism The small reduction gear, the small reduction gear of the indexing mechanism meshes with the large reduction gear of the indexing mechanism on the outer casing of the indexing mechanism, and the inner wall supporting mechanism includes an AC servo motor fixed plate of the inner wall supporting mechanism arranged at the lower part of the outer casing of the indexing mechanism, The inner wall support mechanism AC servo motor is fixed on the inner wall support mechanism AC servo motor fixed plate through the inner wall support mechanism reducer, and the lower part of the index fixed shaft is symmetrically provided with two cranks, and each crank is connected to the rocker through a connecting shaft. The front end of the rocker is provided with support rollers; the power output shaft of the inner wall support mechanism reducer is provided with a small reduction gear of the inner wall support mechanism, and the small reduction gear of the inner wall support mechanism meshes with the large reduction gear of the inner wall support mechanism arranged on the crank.

The outer casing of the indexing mechanism is installed on the indexing fixed shaft through angular contact ball bearings.

The fixed plate of the indexing mechanism is also provided with an indexing limit pin shaft, which is inserted into the annular groove on the large reduction gear of the indexing mechanism, and the angle of the annular groove is less than 180°, which plays the role of indexing. The role of stroke limit.

The AC servo motor of the indexing mechanism drives the small reduction gear of the indexing mechanism to rotate through the reducer of the indexing mechanism, and transmits the motion and power to the large reduction gear of the indexing mechanism, and the large reduction gear of the indexing mechanism is fixed on the outer casing of the indexing mechanism , thus driving the entire indexing mechanism to rotate.

The support roller is installed on the front end of the rocker through the roller shaft, and the roller shaft is provided with a flexible support spring, and the front end of the rocker is also correspondingly provided with a position adjustment shaft of the support roller. The support roller can make the whole mechanism rotate along the inner wall of the pipe when the inner wall is tightened; the flexible support spring can be adjusted to adapt to the roundness error of the inner wall of the pipe during the manufacturing process; the position adjustment shaft of the support roller can adjust the distance between the support roller and the inner wall of the pipe. contact angle.

The fixed plate of the AC servo motor of the inner wall support mechanism is also provided with a rocker shaft and a rocker travel limit pin. The stroke limit pin of the rocker blocks the stroke of the outward support of the rocker to prevent accidents.

The AC servo motor of the inner wall support mechanism drives the small reduction gear of the inner wall support mechanism to rotate through the reducer of the inner wall support mechanism, and transmits the motion and power to the large reduction gear of the inner wall support mechanism. The large reduction gear of the inner wall support mechanism is connected to two symmetrically arranged cranks The crank is fixedly connected, and the crank is installed on the fixed shaft through the crank mounting seat and the bearing. The crank drives the corresponding rocker and takes the supporting rollers to expand outward along the rocker axis to tighten the inner wall of the pipe.

The fixed plate of the AC servo motor of the inner wall supporting mechanism is fixed on the lower end of the casing of the indexing mechanism.

Through the above technical scheme, the present invention has the following effects: the said rotary symmetric crank rocker flexible pipeline inner wall support device realizes the offshore abandoned pipe without polluting the environment by setting the inner wall support mechanism and the corresponding indexing mechanism Under the condition of underwater, the abandoned pipe can be effectively removed above 3m above the ground, with stable cutting, high efficiency, safe and convenient use, and strong adaptability.

Description of drawings:

Fig. 1 is a structural principle diagram of the present invention;

Fig. 2 is the bottom-view structural schematic diagram of Fig. 1 of the present invention;

Fig. 3 is the schematic diagram of the sectional structure at A-A place of Fig. 2 of the present invention;

Fig. 4 is a schematic diagram of the cross-sectional structure at B-B of Fig. 1 of the present invention.

As shown in the figure: 1. The fixed plate of the indexing mechanism; 2. The AC servo motor of the indexing mechanism; 3. The reducer of the indexing mechanism; 4. The small reduction gear of the indexing mechanism; 5. The large reduction gear of the indexing mechanism; 6. Indexing limit pin; 7. Indexing mechanism jacket; 8. Angular contact ball bearing; 9. Indexing fixed shaft; 10. AC servo motor for inner wall supporting mechanism; 11. Inner wall supporting mechanism reducer; 12. Inner wall supporting mechanism Small reduction gear; 13, large reduction gear of inner wall support mechanism; 14, crank; 15, connecting shaft; 16, rocker block; 17, flexible support spring; 18, support roller position adjustment shaft; 19, support roller; 20, roller shaft ; 21, rocker shaft; 22, rocker stroke limit pin; 23, inner wall support mechanism AC servo motor fixing plate; 24. crank mounting seat.

Detailed ways

Below in conjunction with the preferred embodiment shown in the accompanying drawings, it will be further described in detail

As shown in Figures 1 to 4, the said rotary symmetric crank rocker flexible pipeline inner wall support device is characterized in that it includes an indexing mechanism and an inner wall supporting mechanism, and said indexing mechanism includes an indexing fixed shaft 9, an indexing The upper part of the fixed shaft 9 is provided with an indexing mechanism fixed disk 1, and the indexing mechanism AC servo motor 2 is fixed on the indexing mechanism fixed disk 1 through the indexing mechanism reducer 3, and the power output shaft of the indexing mechanism reducer 3 is provided with The small reduction gear 4 of the transposition mechanism, the small deceleration gear 4 of the transposition mechanism meshes with the large deceleration gear 5 of the transposition mechanism on the overcoat 7 of the transposition mechanism. The supporting mechanism AC servo motor fixed disk 23, the AC servo motor 10 of the inner wall supporting mechanism is fixed on the inner wall supporting mechanism AC servo motor fixing disk 23 through the inner wall supporting mechanism reducer 11, and the lower part of the transposition fixing shaft 9 is symmetrically arranged with two Cranks 14, each crank is connected with the rocker 16 through the connecting shaft 15, and the front end of the rocker 16 is provided with a support roller 19; the power output shaft of the inner wall support mechanism reducer 11 is provided with a small reduction gear 12 of the inner wall support mechanism, and the inner wall support mechanism The small reduction gear 12 meshes with the large reduction gear 13 of the inner wall support mechanism arranged on the crank 14 .

Further, the outer casing 7 of the indexing mechanism is installed on the indexing fixed shaft 9 through an angular contact ball bearing 8 .

Further, the fixed disk 1 of the indexing mechanism is also provided with an indexing limit pin 6, which is inserted into the annular groove on the large reduction gear 5 of the indexing mechanism, and the angle of the annular groove is less than 180° °, which plays the role of indexing travel limit.

Further, the AC servo motor 2 of the indexing mechanism drives the small reduction gear 4 of the indexing mechanism to rotate through the reducer 3 of the indexing mechanism, and transmits motion and power to the large reduction gear 5 of the indexing mechanism, and the large reduction gear 5 of the indexing mechanism It is fixed on the overcoat 7 of the indexing mechanism, thereby driving the entire indexing mechanism to rotate.

Further, the support roller 19 is installed on the front end of the rocker 16 through the roller shaft 20, the roller shaft 20 is provided with a flexible support spring 17, and the front end of the rocker 16 is also provided with a support roller position adjustment shaft 18 correspondingly. The supporting roller 19 can make the whole mechanism rotate along the inner wall of the pipeline when the inner wall is tightened; the flexible supporting spring 17 can be adjusted to adapt to the roundness error of the inner wall of the pipeline during the manufacturing process; the position adjustment shaft 18 of the supporting roller can adjust the position of the supporting roller The contact angle of the inner wall of the pipe.

Further, the AC servo motor fixing plate 23 of the inner wall support mechanism is also provided with a rocker shaft 21 and a rocker travel limit pin 22 correspondingly. Rocking block travel limit pin 22 limits the stroke of the rocking block's outward support, to prevent accidents.

Further, the AC servo motor 10 of the inner wall support mechanism drives the small reduction gear 12 of the inner wall support mechanism to rotate through the inner wall support mechanism reducer 11, and transmits the motion and power to the large reduction gear 13 of the inner wall support mechanism, and the large reduction gear 13 of the inner wall support mechanism It is fixedly connected with two symmetrically arranged cranks 14, and the crank 14 is installed on the indexing fixed shaft through the crank mounting seat 24 and the bearing. The crank 14 drives the corresponding rocker 16 and carries the support roller 19 outward along the rocker shaft 21. Expand to brace the inner wall of the pipe.

Further, the AC servo motor fixing plate 23 of the inner wall support mechanism is fixed on the lower end of the outer casing 7 of the indexing mechanism.

The rotary symmetric crank rocker flexible pipeline inner wall support device, when in use, first unfolds toward the inner wall of the pipeline under the drive of the servo motor of the inner wall support mechanism, and the motor automatically stops moving when the mechanism tightens the inner wall of the pipeline (the servo motor adopts Torque control mode); then the AC servo motor of the indexing mechanism drives the slewing mechanism of the mechanism to make a slewing movement, and various processing tools for the inner wall of the pipeline can be installed on the rocker of the supporting mechanism to complete various processing of the inner wall of the pipeline. After the discarded pipe cutting device is lifted out of the discarded pipe, the discarded pipe is pulled down by the ship, lifted out of the water and transported away.

Claims (8)

1. A rotary symmetric crank rocker flexible pipe inner wall support device, characterized in that it includes an indexing mechanism and an inner wall supporting mechanism, the indexing mechanism includes an indexing fixed shaft, and the upper part of the indexing fixed shaft is provided with an indexing mechanism The fixed plate, the AC servo motor of the indexing mechanism is fixed on the fixed plate of the indexing mechanism through the reducer of the indexing mechanism. The power output shaft of the reducer of the indexing mechanism is provided with a small reduction gear of the indexing mechanism. The large deceleration gear of the indexing mechanism on the outer shell of the indexing mechanism meshes with each other. The inner wall support mechanism includes the fixed plate of the AC servo motor of the inner wall support mechanism arranged at the lower part of the outer shell of the index mechanism, and the AC servo motor of the inner wall support mechanism decelerates through the inner wall support mechanism. The device is fixed on the fixed plate of the AC servo motor of the inner wall support mechanism, and two cranks are arranged symmetrically on the lower part of the index fixed shaft, each crank is connected with the rocker through a connecting shaft, and the front end of the rocker is provided with a support roller; the inner wall support mechanism The power output shaft of the speed reducer is provided with a small reduction gear of the inner wall support mechanism, and the small reduction gear of the inner wall support mechanism meshes with the large reduction gear of the inner wall support mechanism arranged on the crank. 2. The rotary symmetric crank rocker flexible pipe inner wall supporting device according to claim 1, characterized in that: the outer casing of the indexing mechanism is mounted on the indexing fixed shaft through angular contact ball bearings. 3. The rotary symmetrical crank rocker flexible pipeline inner wall support device according to claim 1, characterized in that: the fixed plate of the indexing mechanism is also provided with an indexing limit pin, and the indexing limit pin Inserted in the annular groove on the large reduction gear of the indexing mechanism, the angle of the annular groove is less than 180°, and plays the role of limiting the indexing stroke. 4. The rotary symmetrical crank rocker flexible pipeline inner wall support device according to claim 1, characterized in that: the AC servo motor of the indexing mechanism drives the small reduction gear of the indexing mechanism to rotate through the reducer of the indexing mechanism, and the The motion and power are transmitted to the large reduction gear of the indexing mechanism, and the large reduction gear of the indexing mechanism is fixed on the outer cover of the indexing mechanism, thereby driving the entire indexing mechanism to rotate. 5. The rotary symmetric crank rocker flexible pipe inner wall support device according to claim 1, characterized in that: the support roller is installed on the front end of the rocker through a roller shaft, and a flexible support spring is arranged on the roller shaft, and the rocker The front end is also correspondingly provided with a support roller position adjustment shaft. 6. The rotary symmetric crank rocker flexible pipeline inner wall support device according to claim 1, characterized in that: the inner wall support mechanism AC servo motor fixed plate is also provided with a rocker shaft and a rocker travel limit pin. 7. The rotary symmetrical crank rocker flexible pipeline inner wall support device according to claim 1 or 6, characterized in that: the AC servo motor of the inner wall support mechanism drives the small reduction gear of the inner wall support mechanism to rotate through the inner wall support mechanism reducer , the movement and power are transmitted to the large reduction gear of the inner wall support mechanism, and the large reduction gear of the inner wall support mechanism is fixedly connected with two symmetrically arranged cranks. The block and the supporting rollers are spread out along the axis of the rocker block to brace the inner wall of the pipe. 8. The rotary symmetric crank rocker flexible pipeline inner wall support device according to claim 1, characterized in that: the AC servo motor fixing plate of the inner wall support mechanism is fixed at the lower end of the casing of the indexing mechanism.