CN205100875U - Seabed rig is with times journey advancing device - Google Patents

Abstract

The utility model discloses a double-range propulsion device for a seabed drilling rig. It includes the drilling rig mast frame, propulsion cylinder, movable pulley, fixed pulley, wire rope, and wire rope tension adjustment mechanism; the propulsion cylinder is fixedly installed inside the drilling rig mast frame, the propulsion earring is fixed on the top of the piston rod of the propulsion cylinder, and the two movable pulley shafts are respectively set on the propulsion cylinder. In the pulley shaft installation hole opened by the earrings, the two ends of the movable pulley shaft are respectively equipped with movable pulleys, the upper and lower parts of both sides of the drilling rig mast frame are respectively equipped with fixed pulleys, and the front of the drilling rig mast frame is installed with vertical slide rails. The slide block is fixed on the vertical slide rail, and the two ends of the two steel wire ropes bypassing the movable pulley, the fixed pulley and the drilling power head are respectively fixedly connected with the wire rope tensioning adjustment mechanism. The drilling power head can slide up and down along the vertical slide rail driven by the propulsion cylinder. Due to the combination of movable pulley and fixed pulley, the displacement of the drilling power head is twice the expansion and contraction of the propulsion cylinder.

Description

Double range propulsion device for subsea drilling rig

technical field

The utility model relates to a seabed drilling machine, in particular to a double-range propulsion device for a seabed drilling machine.

Background technique

The submarine drilling rig is one of the important equipment necessary to carry out marine geological and environmental scientific research, conduct seabed resource exploration and submarine engineering geological survey, and obtain accurate geological data of the seabed. The whole process of the rear deck needs to be completed with the aid of the A-frame of the ship. Due to the limitation of the height and width of the A-frame of the ship and the bearing capacity of the armored umbilical cable, the overall structure of the subsea drilling rig should be as compact as possible during the design process and the quality of the drilling rig Should be as lightweight as possible. The stroke of the drilling power head of the subsea drilling rig directly affects the drilling depth capability of a single drill pipe of the subsea drilling rig (that is, the design length of a single drill pipe). , the stroke of the propulsion cylinder must be doubled, which requires a corresponding increase in the height of the subsea drilling rig, which not only increases the quality of the propulsion cylinder, the rig frame and other components, but also increases the installation space required for the propulsion cylinder, which is different from The requirements that the overall structure of the drilling rig should be as compact as possible and that the mass of the drilling rig should be as light as possible create serious conflicts.

Utility model content

In order to solve the above-mentioned technical problems, the utility model provides a propulsion device with compact structure, light weight and the ability to drive the drilling head of a subsea drilling rig to slide up and down along the vertical slide rail.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is as follows: including the mast frame of the drilling rig, the propulsion oil cylinder, the movable pulley, the fixed pulley, the steel wire rope, and the tension adjustment mechanism of the steel wire rope; , the propulsion earring is fixed on the top of the piston rod of the propulsion cylinder, and the two movable pulley shafts are respectively set in the pulley shaft installation holes opened by the propulsion earrings. , the movable pulleys are set on both ends of the movable pulley shaft respectively, and the two movable pulley shafts are fixed by the pulley shaft connecting rod; fixed pulleys are respectively installed on the upper and lower parts of the two sides of the drilling rig mast frame, and vertical slide rails are installed on the front of the drilling rig mast frame. The head is fixed on the vertical slide rail by advancing the slider, and the two ends of the two steel wire ropes bypassing the movable pulley, the fixed pulley and the drilling power head are respectively fixedly connected with the wire rope tension adjustment mechanisms fixed on both sides of the mast frame of the drilling rig.

The drilling power head can slide up and down along the vertical slide rail driven by the propulsion cylinder. Because the device uses a movable pulley, the displacement of the drilling power head is twice the expansion and contraction of the propulsion cylinder.

In the double-range propulsion device for the above-mentioned subsea drilling rig, the wire rope tension adjustment mechanism includes a wire rope adjustment screw, a wire rope tension seat and an adjustment nut; Set on the steel wire rope tensioning seat, the ends of the steel wire rope adjusting screw are fixedly connected with the steel wire rope respectively, and the tension degree of the steel wire rope can be adjusted by the adjusting nut screwed on the steel wire rope adjusting screw.

The above is applicable to double-range propulsion devices for subsea drilling rigs, and the propulsion oil cylinder is replaced by a screw nut mechanism driven by a hydraulic motor or an electric motor.

Compared with the prior art, the utility model has the advantages that: the combination of the movable pulley and the fixed pulley and the propulsion cylinder are used in the utility model to drive the drilling power head of the subsea drilling rig to slide up and down along the vertical slide rail, so that the displacement of the drilling power head The expansion and contraction amount is twice that of the propulsion oil cylinder, and at the same time, the structure of the plug in the utility model is simple, compact, easy to process and manufacture, and has high reliability.

Description of drawings

Fig. 1 is a structural schematic diagram of Embodiment 1 of the present utility model.

Fig. 2 is a schematic diagram of the installation structure of the propulsion cylinder in Embodiment 1 of the present utility model.

Fig. 3 is a structural schematic diagram of the steel wire rope tension adjustment mechanism in Embodiment 1 of the present utility model.

Fig. 4 is a structural schematic diagram of Embodiment 2 of the present utility model.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in Figures 1 and 2, the utility model includes a drilling rig mast frame 1, a propulsion cylinder 15, a movable pulley 8, a fixed pulley 2, a steel wire rope 6, and a wire rope tension adjustment mechanism 4; Installed inside the mast frame 1 of the drilling rig (as shown in Figure 2), the propulsion earring 14 is fixed on the top of the piston rod 151 of the propulsion cylinder, and the movable pulley shaft 9 and the movable pulley shaft 901 are respectively set in the pulley shaft installation holes provided by the propulsion earring 14. The two ends of the shaft 9 and the movable pulley shaft 901 stretch out the propelling earrings 14 and pass through the chute 101 provided on both sides of the rig mast frame 1, the movable pulley 8 and the movable pulley 801 are respectively sleeved on the two ends of the movable pulley shaft 9 and the movable pulley shaft 901, It is fixed by movable pulley shaft connecting rod 10. The upper parts on both sides of the drilling rig mast frame 1 are respectively fixed with a fixed pulley shaft 3 and a fixed pulley shaft 301, and the fixed pulley shaft 3 and the fixed pulley shaft 301 are respectively covered with a fixed pulley 2 and a fixed pulley 201; The fixed pulley shaft 302 and the fixed pulley shaft 303 are fixed, the fixed pulley shaft 302 and the fixed pulley shaft 303 are respectively covered with the fixed pulley 202 and the fixed pulley 203, the vertical slide rail 5 is installed in front of the mast frame 1 of the drilling rig, and the drilling power head 12 passes through the Propelling slider 7 is fixed on vertical slide rail 5, and wire rope fixing block 13 is fixed on drilling power head 12. The two ends of the wire rope bypassing the movable pulley 8, the fixed pulley 2 and the fixed pulley 201 are fixedly connected with the wire rope fixing block 13 and the wire rope tensioning adjustment mechanism 4 fixed on both sides of the drilling rig mast frame 1, bypassing the movable pulley 801, the fixed pulley 202 The two ends of the wire rope of the fixed pulley 203 are respectively fixedly connected with the wire rope fixing block 13 and the wire rope tensioning adjustment mechanism 401 fixed on both sides of the mast frame 1 of the drilling rig. Rail 5 slides up and down, because this device has adopted movable pulley, makes the displacement of drilling power head 12 twice the expansion and contraction of propelling oil cylinder 15.

As shown in Figure 3: the wire rope tension adjustment mechanism 4 includes a wire rope adjustment screw 41, a wire rope tension seat 42 and an adjustment nut 43; Adjusting screw rod 41 is sleeved on the wire rope tensioning seat 42, and the ends of wire rope adjusting screw rod 41 are fixedly connected with wire rope 6 respectively.

As shown in Figure 4, it is another embodiment of the present utility model. The difference from Embodiment 1 is that the propulsion cylinder described in this embodiment is replaced by a hydraulic motor 20 driving a screw rod 17 mechanism, and one end of the screw rod 17 is sleeved on the propulsion cylinder. In the internally threaded hole provided by earring 14, the other end of screw mandrel 17 passes through bracket 18 and is connected with hydraulic motor 20 through coupling 19. Driven to realize rotation in both positive and negative directions, the propulsion earring 14 can convert the rotation of the lead screw 17 in the positive and negative directions into linear motion of the propulsion earring 14 along the two directions of the axis of the screw rod 17, and then drive the drilling head 12 slide up and down along the vertical slide rail 5.

Claims (3)

1. A double-range propulsion device for a subsea drilling rig, characterized in that: it comprises a drilling rig mast frame, a propulsion cylinder, a movable pulley, a fixed pulley, a steel wire rope, and a tension adjustment mechanism for a steel wire rope; Inside the mast frame, the propulsion earrings are fixed on the top of the piston rod of the propulsion cylinder, and the two movable pulley shafts are respectively set in the pulley shaft installation holes opened by the propulsion earrings. The movable pulleys are set on both ends of the movable pulley shaft respectively, and the two movable pulley shafts are fixed by the pulley shaft connecting rod; fixed pulleys are respectively installed on the upper and lower parts of both sides of the drilling rig mast frame, and vertical slide rails are installed on the front of the drilling rig mast frame. The drilling power head is fixed on the vertical slide rail by pushing the slider, and the two ends of the two steel wire ropes bypassing the movable pulley, the fixed pulley and the drilling power head are respectively fixed with the wire rope tension adjustment mechanism fixed on both sides of the mast frame of the drilling rig. connect. 2. The double-range propulsion device for subsea drilling rig according to claim 1, characterized in that: the wire rope tension adjustment mechanism includes a wire rope adjustment screw, a wire rope tension seat and an adjustment nut; two pairs of wire rope tension seats are fixed opposite to each other On both sides of the mast frame of the drilling rig, the wire rope adjusting screw is set on the wire rope tensioning seat, and the ends of the wire rope adjusting screw are respectively fixedly connected with the wire rope. The tension of the wire rope can be adjusted by the adjusting nut screwed on the wire rope adjusting screw. 3. The double-range propulsion device for a subsea drilling rig according to claim 1 or 2, characterized in that the propulsion cylinder is replaced by a screw nut mechanism driven by a hydraulic motor or an electric motor.