CN204532122U - Double lifting derrick and base - Google Patents

Abstract

The utility model discloses a double-lift derrick and a base, comprising a derrick, a base and a gable frame, the base comprises a base and an upper seat, the lower ends of the derrick and the gable frame are hinged on the base, and the A set of pulleys is symmetrically arranged on both sides of the middle and lower section, two sets of pulleys are arranged symmetrically on both sides of the top of the gable frame, pulleys are arranged symmetrically on both sides of the upper seat; two sets of derrick lifting are arranged symmetrically on both sides of the derrick and base Large ropes, meanwhile, two upper seat hoisting large ropes are arranged symmetrically on both sides of the derrick and the base. The device of the utility model adopts two sets of hoisting pulleys and large hoisting ropes to lift the derrick and the base respectively, increases the number of large ropes and ropes when the derrick and the upper seat are lifted, and provides steel wire rope tension support for the middle part of the derrick to greatly The length of the cantilever when the derrick is lifted is reduced, the lifting load of the derrick and the upper seat is reduced, and the stress state of the pulley attachment structure is improved, which meets the requirements of greatly increasing the operating height and safety space of the derrick.

Description

Double rise derrick and base

technical field

The utility model belongs to the technical field of petroleum machinery and relates to a double-lifting derrick and a base.

Background technique

At present, the one-time rope threading and continuous lifting of the oil drilling rig derrick and base adopt a large rope for one-time rope threading, and continuously lift the derrick and the base to the working position successively. The drilling rig with this structure has the following advantages: the lower end of the derrick and the gable frame are hinged on the bottom base, the overall structural stability is good; the lifting is simple and the installation work intensity is low; It is carried out on the drill floor, and the advantages of convenient operation are widely used. The disadvantage is that when the drilling derrick is lifted with this structure, the lifting load is concentrated on the lower pulley of the derrick and the attachment structure of the pulley box by the large rope, and the part above the derrick pulley is integrally cantilevered, resulting in bad stress on the parts near the derrick pulley, bloated structure, and heavy weight. very big.

With the development of drilling technology, the improvement of industry standards for drilling safety requirements and the intensification of competition in the drilling market, customers have put forward higher requirements for the relocation, installation and operation safety of drilling rigs: While improving the structural advantages of the derrick base, the operating height and safety space of the derrick are greatly improved, and equipment such as top drive and top drive guide rails are lifted and lowered with the derrick. The existing continuous hoisting derrick pedestal with a single threading rope cannot meet the market requirements due to the limitation of the hoisting method.

Utility model content

The purpose of this utility model is to provide a double-lift derrick and base, which solves the problem in the prior art that the hoisting load is concentrated on the pulley at the lower part of the derrick and the accessory structure of the pulley box by the large rope, and the part above the derrick pulley is integrally cantilevered. As a result, the components near the derrick pulley are badly stressed and the structure is bloated.

The technical solution adopted in the utility model is a double-lift derrick and base, including a derrick, a base and a gable frame, the base includes a base and an upper seat, and the lower ends of the derrick and the gable frame are hinged on the base On the top, one set of pulleys is symmetrically arranged on both sides of the middle and lower section of the derrick, two sets of pulleys are symmetrically arranged on both sides of the top of the gable frame, and two sets of pulleys are symmetrically arranged on both sides of the upper seat;

Two derrick hoisting ropes are symmetrically arranged on both sides of the derrick and the base, and two upper seat lifting ropes are symmetrically arranged on both sides of the derrick and the base.

The double-lift derrick and the base of the utility model are also characterized in that:

A set of pulleys is composed of four pulleys.

The second set of pulleys is composed of two pulleys.

One end of the derrick hoisting rope is fixed on the ear plate of the rear column in the middle of the derrick, and the other end goes around the second set of pulleys and the first set of pulleys in turn and hangs on the lifting tripod connected with the traveling crane.

One end of the lifting rope of the upper seat is fixed on the fixed ear plate on the side of the herringbone frame, and the other end goes around the pulley and a set of pulleys in turn and hangs on the lifting tripod connected with the traveling crane.

The beneficial effect of the utility model is that the double-lifting derrick and the base retain the original one-time stringing continuous hoisting derrick and the structure of the base, and a large rope is added to the derrick, the herringbone frame, and the base to connect the lug plate and the guide pulley. The derrick and base are hoisted with two sets of hoisting pulleys and large hoisting ropes respectively, which increases the number of large ropes and ropes when the derrick and the upper base are hoisted, and provides steel wire rope tension support for the middle of the derrick to greatly reduce the cantilever when the derrick is hoisted. length, reduce the hoisting load of the derrick and the upper block, improve the stress state of the pulley attachment structure, and meet the structural requirements of greatly increasing the operating height and safety space of the derrick, and carrying the top drive and top drive guide rail for lifting and lowering.

Description of drawings

Fig. 1 is the schematic diagram of the initial state of the derrick structure of the utility model when it is lifted on the ground;

Fig. 2 is the top view in Fig. 1;

Fig. 3 is a partially enlarged schematic diagram of A in Fig. 1;

Fig. 4 is a partially enlarged schematic diagram of B in Fig. 2;

Fig. 5 is a schematic diagram of the lifting process of the derrick of the utility model,

Fig. 6 is a schematic diagram of the initial lifting state of the base structure of the utility model,

Figure 7 is a schematic diagram of the lifting process of the upper seat of the utility model,

Fig. 8 is a structural schematic diagram of the utility model after the upper seat is lifted.

In the figure, 1. Derrick, 2. Base, 3. Herringbone frame, 4. Base, 5. Upper seat, 6. One set of pulleys, 7. Two sets of pulleys, 8. Derrick hoisting rope, 9. Upper seat Raise big rope, 10. pulley, 11. lifting tripod.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

With reference to Fig. 1, Fig. 2, the structure of the utility model double lifting type derrick and base is, comprises derrick 1, base 2 and herringbone frame 3, base 2 comprises base 4 and upper seat 5, derrick 1 and herringbone frame 3 The lower ends are all hinged on the base 4, and a group of pulleys 6 are symmetrically arranged on both sides of the middle and lower section of the derrick 1 (i.e. the position at A in Fig. 1, the group of pulleys 6 in the embodiment of Fig. 3 consists of four pulleys 61/ 62/63/64), two sets of pulleys 7 are symmetrically arranged on both sides of the top of the herringbone frame 3 (that is, the position at B in Fig. 2, and the two sets of pulleys 7 in the embodiment of Fig. 4 are composed of two pulleys 71/72 combination), the both sides of upper seat 5 are symmetrically provided with pulley 10;

Two derrick lifting ropes 8 are symmetrically arranged on both sides of the derrick 1 and the base 2, and at the same time, two upper seat lifting ropes 9 are symmetrically arranged on both sides of the derrick 1 and the base 2; the derrick lifting ropes 8 are used for For the hoisting of the derrick 1, one end of the hoisting rope 8 of the derrick is fixed on the ear plate of the rear column in the middle of the derrick 1, and the other end goes around the pulleys, the second group of pulleys 7 and the first group of pulleys 6 (that is, the pulleys 71/72, 61, 62 ) after being hung on the lifting tripod 11 connected with the swimming crane; the upper seat hoisting rope 9 is used for the lifting of the upper seat 5, and one end of the upper seat hoisting rope 9 is fixed on the fixed ear plate of the well herringbone frame 3 sides On, the other end walks around pulley 10 and pulley group 6 (pulley 64,63 wherein) successively and hangs on the hoisting tripod 11 that is connected with traveling crane.

The working principle of the utility model is:

Referring to Fig. 5, when the derrick is hoisted, the main drawworks of the drilling rig lifts the traveling crane and the tripod 11 pulls the derrick hoisting rope 8 to lift the derrick 1 from the horizontal state to the vertical working state, and connects the derrick 1 to the gable frame 3 After being fixed securely, disassemble the connection between the derrick hoisting rope 8 and the hoisting tripod 11, and fix the end of the derrick hoisting rope 8 in the derrick rope hanger, lower and hang it to a low position, and the derrick 1 is lifted. Complete, see Figure 6.

Referring to Fig. 7, when lifting the upper stand 5, one end of the upper stand hoisting rope 9 is connected with the fixed lug plate on the herringbone frame 3, and the other end is connected with the main drawworks hoisting crane of the drilling rig and the lifting tripod 11, and the upper stand is lifted large The rope 9 passes through the pulley 10 on the upper base 5, starts the main drawworks of the drilling rig to lift the traveling crane, lifts the upper base 5 from a low position to a high position, connects the base 2 and the gable 3 firmly, and disassembles the upper base for lifting. Rope 9 is connected with hoisting tripod 11, and the end of the upper seat hoisting rope 9 is fixed in the derrick rope hanger, lowered and swung to a low position, and the base 2 is hoisted, as shown in Figure 8.

The double-lifting derrick and base of the utility model retains the original one-time continuous hoisting derrick and base structure, and adds large rope connecting ear plates and guide pulleys to the derrick, herringbone frame and base, and uses the derrick and base respectively Two sets of hoisting pulleys and hoisting ropes increase the number of ropes and ropes when the derrick and the upper stand are lifted, and provide steel wire rope tension support for the middle of the derrick to greatly reduce the cantilever length when the derrick is hoisted and lower the derrick. And the lifting load of the top seat, improving the stress state of the pulley attachment structure, meeting the structural requirements of greatly increasing the operating height and safety space of the derrick, and carrying the top drive and top drive guide rail for lifting and lowering.

Claims (5)

1. A double-lifting derrick and base, comprising a derrick (1), a base (2) and a gable (3), the base (2) comprising a base (4) and an upper seat (5), characterized in that: The lower ends of the derrick (1) and the derrick (3) are all hinged on the base (4), and a group of pulleys (6) are symmetrically arranged on both sides of the middle and lower section of the derrick (1). (3) two sets of pulleys (7) are symmetrically arranged on both sides of the top, and pulleys (10) are symmetrically arranged on both sides of the upper seat (5); Two derrick hoisting ropes (8) are symmetrically arranged on both sides of the derrick (1) and the base (2), and at the same time, two upper seat lifting ropes are symmetrically arranged on both sides of the derrick (1) and the base (2) (9). 2. The double-lift derrick and base according to claim 1, characterized in that: the set of pulleys (6) is composed of four pulleys. 3. The double-lift derrick and base according to claim 1, characterized in that: the two sets of pulleys (7) are composed of two pulleys. 4. The double-lift derrick and base according to claim 1, characterized in that: one end of the derrick hoisting rope (8) is fixed on the ear plate of the rear column in the middle of the derrick (1), and the other end is wound around After two groups of pulleys (7) and one group of pulleys (6), hang on the hoisting tripod (11) that is connected with the swimming crane. 5. The double-lift derrick and base according to claim 1, characterized in that: one end of the upper seat hoisting rope (9) is fixed on the fixed ear plate on the side of the well frame (3), and the other One end walks around the pulley (10) and one group of pulleys (6) successively and hangs on the lifting tripod (11) connected with the traveling crane.