Automatic connecting device used after lifting of derrick base

Abstract

The utility model discloses an automatic connecting device used after lifting of a derrick base. The automatic connecting device comprises connecting pin hydraulic cylinders and connecting lug plate sets, wherein the connecting pin hydraulic cylinders and the connecting lug plate sets are symmetrically arranged between the top layer of the base and the derrick and between the derrick and a propeller strut. The connecting lug plate set is composed of a single lug plate welded to the top layer of the base and a double lug plate embedded into an H-shaped steel groove of a derrick main structure, and the single lug plate and the double lug plate are matched through a conical pin hole. The connecting pin hydraulic cylinder comprises a conical connecting pin, a double-acting hydraulic cylinder and a connecting fixing seat, the hydraulic cylinder is fixed to the connecting fixing seat welded in the derrick main structure through a bolt set, and the conical connecting pin is driven to be inserted into or withdrawn from the pin hole. Manual high-altitude operation is replaced by hydraulic drive, and the self-alignment design of the taper pin is combined, so that the mounting precision requirement is remarkably reduced, the auxiliary requirement of a crane is eliminated, and the operation safety and efficiency are improved; and meanwhile, original structural space installation of the derrick is utilized, adaptability is high, and the device is suitable for high-position automatic connection scenes of land drilling rig derricks, bases and A-frames.

Description

Technical Field

[0001] This utility model relates to the field of onshore oil and gas drilling and production technology, specifically to an automatic connection device for the lifting of the derrick base. Background Technology

[0002] Currently, after the derrick and base of a land drilling rig are raised, the installation and removal of the connecting pins require manual labor in conjunction with a crane. The specific process is as follows: after the derrick is raised to a high position, the crane hoists the connecting pin to the working position, and workers use a sledgehammer to drive it into the ear plate pin hole; disassembly requires the reverse operation. This method has the following drawbacks:

[0003] (1) High-altitude operations are risky and personnel safety is difficult to guarantee; (2) Relying on cranes for assistance results in low work efficiency and high costs; (3) Traditional ear plates and pin holes are cylindrical, requiring strict alignment accuracy, and are prone to misalignment leading to installation difficulties.

[0004] While existing technologies (such as CN202211341142.5) propose adjustable screw connection devices, they still require manual operation and cannot achieve automation. Therefore, there is an urgent need for an automatic connection device that can replace manual operation and improve safety and efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an automatic connection device for the derrick base after it is raised, so as to solve the problems of low efficiency and poor safety of high-level derrick connection in the prior art, which relies on manual operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic connection device for a derrick base after lifting, comprising a base top layer, a derrick, and an A-frame. A connecting pin hydraulic cylinder and a connecting lug plate assembly are provided between the base top layer and the derrick; a connecting pin hydraulic cylinder and a connecting lug plate assembly are also provided between the derrick and the A-frame; the connecting lug plate assembly includes a single lug plate welded to the base top layer and a double lug plate welded into the groove of the H-beam of the derrick main structure, the single lug plate being able to be inserted into the gap between the double lug plates, and both having a tapered pin hole matching the tapered pin; the connecting pin hydraulic cylinder includes a hydraulic cylinder and a tapered connecting pin connected to the hydraulic cylinder via a connecting pin and an anti-disengagement pin, the hydraulic cylinder being fixed to a connecting fixing seat by a bolt assembly, and the connecting fixing seat being welded to the groove of the H-beam of the derrick main structure by connecting ribs;

[0007] The connecting fixing seat is provided with a connecting flange plate and a connecting stiffener plate. The hydraulic cylinder is bolted to the connecting flange plate through the connecting base plate at its bottom. The connecting pin hydraulic cylinder and the connecting ear plate assembly are symmetrically arranged on the left and right symmetrical main structures of the derrick, the top layer of the base, and the A-frame.

[0008] Preferably, the ear plate plane of the double ear plate is perpendicular to the flange of the H-beam of the main structure of the derrick.

[0009] Preferably, the hydraulic cylinder is a double-acting hydraulic cylinder, with a connecting lug plate on its top, through which the connecting pin is hinged to the hydraulic cylinder.

[0010] Preferably, the welding position of the connecting fixing seat is located in the groove of the H-beam of the main structure of the derrick, and the welding direction of its connecting stiffener is consistent with the stress direction of the main structure of the derrick.

[0011] Preferably, the taper of the tapered connecting pin matches the tapered pin hole of the double-ear plate and the single-ear plate, with a taper of 1:10 to 1:20.

[0012] Preferably, the anti-detachment pin passes through the end of the connecting pin, forming a bidirectional limit on the tapered connecting pin.

[0013] Preferably, the connecting pin hydraulic cylinder and connecting ear plate assembly are also adapted to connection scenarios after the land drilling rig base, derrick, and A-frame are lifted.

[0014] The working process of this utility model is as follows:

[0015] The derrick is lifted into position: the derrick and the base are moved to the predetermined height by the lifting system, at which point the double ear plates in the groove of the H-beam of the main structure of the derrick are aligned with the single ear plate on the top layer of the base.

[0016] Hydraulic drive for tapered pin insertion: The hydraulic cylinder starts upon receiving a control signal, pushing the tapered connecting pin axially. The tapered connecting pin is hinged to the lug of the hydraulic cylinder via a connecting pin, ensuring synchronized movement. The taper of the tapered pin is typically 1:10 to 1:20, matching the tapered pin holes of both double and single lug plates. During insertion, alignment deviations are automatically corrected, eliminating the need for manual adjustment.

[0017] Automatic locking and securing: After the tapered connecting pin is fully inserted, it is locked by an anti-loosening pin to prevent accidental pin retraction. The tapered fit between the double and single ear plates generates radial clamping force, enhancing connection rigidity. When disassembly is required, the hydraulic cylinder reverses its action, pulling the tapered connecting pin out of the pin hole. The anti-loosening pin must be manually released before disassembly to ensure operational safety.

[0018] Symmetrical Arrangement and Extended Applications: The device is arranged on the symmetrical main structures of the derrick, base, and A-frame to ensure balanced stress distribution. The same principle allows for automatic connection scenarios with other land drilling rig structures, enhancing versatility.

[0019] The beneficial effects of this utility model are as follows:

[0020] (1) The derrick, base and A-frame of this utility model are connected by a tapered connecting pin through a hydraulic cylinder, which eliminates the need for workers to climb high, avoids high-level work, and makes the disassembly and assembly process safer.

[0021] (2) This utility model utilizes the original structure of the derrick and places the hydraulic cylinder and connecting pin in the groove of the H-beam of the main structure of the derrick without changing the original main structure. No crane is needed to assist in each disassembly and assembly of the connecting pin.

[0022] (3) This utility model can be used for the interconnection between the derrick and the base, the derrick and the A-frame, and the base and the A-frame in large land drilling rigs without changing the original drilling rig structure. It has better adaptability and is convenient to use. Attached Figure Description

[0023] Figure 1 This is the main structural view of this utility model;

[0024] Figure 2 This is the main view of the hydraulic cylinder with connecting pin in this utility model;

[0025] Figure 3 This is a side view of the hydraulic cylinder with connecting pins in this utility model;

[0026] Figure 4 This is the front view of the utility connecting lug assembly;

[0027] Figure 5 This is a top view of the practical connecting lug assembly;

[0028] Figure 6 This is the main view of this utility connection fixing base;

[0029] Figure 7 This is a side view of the utility connection fixing base;

[0030] In the diagram: 1. Top layer of base; 2. Connecting pin hydraulic cylinder; 3. Connecting ear plate assembly; 4. Derrick; 5. A-frame; 201. Tapered connecting pin; 202. Anti-detachment pin; 203. Connecting pin; 204. Hydraulic cylinder; 205. Bolt assembly; 206. Connecting fixing seat; 301. Double ear plate; 302. Single ear plate; 2041. Connecting ear plate; 2042. Connecting base plate; 2061. Connecting flange plate; 2062. Connecting stiffening plate. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings.

[0032] like Figure 1 As shown: An automatic connection device for lifting the base of a derrick. A connecting pin hydraulic cylinder 2 and a connecting ear plate group 3 are provided between the top layer 1 of the base and the derrick 4. A connecting pin hydraulic cylinder 2 and a connecting ear plate group 3 are also provided between the derrick 4 and the A-frame 5. The single ear plate 302 is welded to the top layer 1 of the base, and the double ear plate 301 is welded to the groove inside the H-beam of the main structure of the derrick 4.

[0033] like Figure 2As shown: The hydraulic cylinder 2 is equipped with a connecting pin 201, which is a tapered pin. The connecting pin 201 is connected to the hydraulic cylinder 204 through the anti-disengagement pin 202 and the connecting pin 203 to ensure that the action of the connecting pin 201 is consistent with the action of the hydraulic cylinder 204.

[0034] like Figure 3 As shown: Hydraulic cylinder 204 is a double-acting hydraulic cylinder, with a connecting lug 2041 and a connecting base plate 2042 on it. The connecting pin 201 is connected to the connecting lug 2041 on the hydraulic cylinder 204 via a connecting pin 203. The hydraulic cylinder 204 is also provided with a connecting fixing seat 206, and the hydraulic cylinder 204 is connected to the connecting fixing seat 206 via a bolt group 205.

[0035] like Figure 4 As shown: The connecting ear plate group 3 includes a double ear plate 301 and a single ear plate 302, and the single ear plate 302 can be inserted between the double ear plates 301.

[0036] like Figure 5 As shown: After the single ear plate 302 is inserted into the double ear plate 301, both the double ear plate 301 and the single ear plate 302 have tapered pin holes that cooperate with and can be inserted into the connecting pin 201.

[0037] like Figure 6 As shown: The connecting fixing seat 206 is provided with a connecting flange plate 2061 and a connecting stiffener plate 2062. The bolt group 205 connects the connecting base plate 2042 on the hydraulic cylinder 204 and the connecting flange plate 2061 on the connecting fixing seat 206.

[0038] like Figure 7 As shown: the connecting fixing seat 206 is welded to the derrick 4 through the connecting stiffener 2062 provided thereon, and the connecting fixing seat 206 is welded inside the groove of the H-beam of the main structure of the derrick 4.

[0039] The working process of this utility model is as follows:

[0040] The derrick is lifted into position: the derrick 4 and the top layer 1 of the base are moved to the predetermined height by the lifting system. At this time, the double ear plate 301 in the groove of the H-shaped steel of the main structure of the derrick is aligned with the single ear plate 302 on the top layer 1 of the base.

[0041] Hydraulic drive for tapered pin insertion: Hydraulic cylinder 204 starts upon receiving a control signal, pushing tapered connecting pin 201 axially. Tapered connecting pin 201 is hinged to lug 2041 of hydraulic cylinder 204 via connecting pin 203, ensuring synchronized action. The taper of the tapered pin is typically 1:10 to 1:20, matching the tapered pin holes of double lug 301 and single lug 302. During insertion, alignment deviations are automatically corrected, eliminating the need for manual adjustment.

[0042] Automatic locking and securing: After the tapered connecting pin 201 is fully inserted, the connecting pin 203 is locked by the anti-disengagement pin 202 to prevent the pin from accidentally retracting. The double ear plate 301 and the single ear plate 302 generate radial clamping force due to their tapered fit, enhancing the connection rigidity. When disassembly is required, the hydraulic cylinder 204 reverses its action, pulling the tapered connecting pin 201 out of the pin hole. The anti-disengagement pin 202 must be manually unlocked before disassembly to ensure operational safety.

[0043] Symmetrical Arrangement and Extended Applications: The device is arranged on the left and right symmetrical main structures of the derrick 4, the top layer of the base 1, and the A-frame 5 to ensure balanced force distribution. The same principle allows for automatic connection scenarios of other land drilling rig structures, improving versatility.

[0044] This invention replaces manual labor with hydraulic drive, eliminating the risks of high-altitude operations; the self-aligning design of the tapered pin and tapered pin hole reduces the installation accuracy requirements and shortens the operation time; the symmetrical design is adaptable to various land drilling rig connection scenarios, making it highly versatile.

[0045] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, based on the technical teachings provided by this utility model and as common knowledge in the mechanical field, other equivalent modifications and improvements can be made, and these should also be considered within the scope of protection of this utility model.

Claims

1. An automatic connection device for use after the derrick base is raised, characterized in that, It includes a base top layer (1), a derrick (4) and an A-frame (5). A connecting pin hydraulic cylinder (2) and a connecting ear plate assembly (3) are provided between the base top layer (1) and the derrick (4); a connecting pin hydraulic cylinder (2) and a connecting ear plate assembly (3) are also provided between the derrick (4) and the A-frame (5). The connecting ear plate assembly (3) includes a single ear plate (302) welded to the top layer of the base (1) and a double ear plate (301) welded to the groove of the H-beam of the main structure of the derrick (4). The single ear plate (302) can be inserted into the gap between the double ear plates (301), and both are provided with tapered pin holes that match the tapered pins. The connecting pin hydraulic cylinder (2) includes a hydraulic cylinder (204) and a tapered connecting pin (201) connected to the hydraulic cylinder (204) via a connecting pin (203) and an anti-detachment pin (202). The hydraulic cylinder (204) is fixed to the connecting fixing seat (206) by a bolt group (205). The connecting fixing seat (206) is welded to the groove of the H-beam of the main structure of the derrick (4) via a connecting rib plate (2062). The connecting fixing seat (206) is provided with a connecting flange plate (2061) and a connecting stiffener plate (2062). The hydraulic cylinder (204) is bolted to the connecting flange plate (2061) through the connecting base plate (2042) at its bottom. The connecting pin hydraulic cylinder (2) and the connecting ear plate assembly (3) are symmetrically arranged on the left and right symmetrical main structures of the derrick (4), the top layer of the base (1) and the A-frame (5).

2. The automatic connection device for the derrick base after lifting according to claim 1, characterized in that: The ear plate plane of the double ear plate (301) is perpendicular to the wing plate of the main structure H-beam of the derrick (4).

3. An automatic connection device for a derrick base after lifting, as described in claim 1 or 2, characterized in that: The hydraulic cylinder (204) is a double-acting hydraulic cylinder with a connecting lug (2041) on its top. The connecting pin (203) is hinged to the hydraulic cylinder (204) through the connecting lug (2041).

4. The automatic connection device for the derrick base after lifting, as described in claim 3, is characterized in that: The welding position of the connecting fixing seat (206) is located in the groove of the H-beam of the main structure of the derrick (4), and the welding direction of its connecting stiffener (2062) is consistent with the stress direction of the main structure of the derrick (4).

5. An automatic connection device for a derrick base after lifting, as described in claim 4, characterized in that: The taper of the tapered connecting pin (201) matches the tapered pin hole of the double ear plate (301) and the single ear plate (302), with a taper of 1:10 to 1:

20.

6. An automatic connection device for a derrick base after lifting, as described in claim 5, characterized in that: The anti-slip pin (202) passes through the end of the connecting pin (203) to form a bidirectional limit on the tapered connecting pin (201).

7. An automatic connection device for a derrick base after lifting, as described in claim 6, characterized in that: The connecting pin hydraulic cylinder (2) and connecting ear plate assembly (3) are also suitable for connection scenarios after the base, derrick, and A-frame of a land drilling rig are lifted.

Images