A self-locking derrick support device

Abstract

This utility model relates to a self-locking derrick support device, belonging to the accessory devices of workover rig derricks. The self-locking derrick support device includes a derrick support, a derrick body, an adjusting assembly, a support rod, a swing sleeve, a safety assembly, and a safety pin. The derrick body is movably mounted on the upper end of the derrick support via a rotating pin. Two sets of rotating sleeves are symmetrically mounted on both sides of the derrick support via rotating pin A. The support rod is mounted on the rotating sleeve via the adjusting assembly. The swing sleeve is movably mounted on the upper end of the derrick body via rotating pin B. The upper end of the support rod is inserted into the corresponding swing sleeve. A safety pin is mounted on one side of the swing sleeve via the safety assembly. This self-locking derrick support device has a compact structure and ingenious design, improving derrick stability and reducing operational risks under extreme conditions, making it particularly suitable for workover rigs.

Description

Technical Field

[0001] This utility model relates to a self-locking derrick support device, which is an accessory device for well workover rig derricks. Background Technology

[0002] The derrick is a crucial component of a workover rig, its primary function being to provide a stable working platform during workover operations, supporting and elevating various equipment and tools. Therefore, the derrick must possess sufficient strength, rigidity, and stability. To ensure operational safety, the overall stability of the derrick is of paramount importance.

[0003] Conventional workover rig derricks, such as the independent hydraulic telescopic derrick disclosed in patent application CN109057720A, employ a wind-loaded tension rope structure. During operation, ground anchors are required to tighten the tension ropes and prevent the derrick from tilting. However, the tension rope structure has the problem of occupying a large area. Currently, most mainstream workover rig derricks on the market use a tension rope-less structure. Although the tension rope-less derrick adds an anti-tipping device (frame) while eliminating the wind-loaded tension rope, the overall stability of the derrick is slightly inferior to that of the wind-loaded tension rope structure. Therefore, it is necessary to add auxiliary support devices to the derrick mechanism to reduce the risk of accidents under extreme working conditions. Summary of the Invention

[0004] The purpose of this utility model is to provide a self-locking derrick support device with a compact structure and ingenious design to solve the problem of possible accidents in existing ropeless derricks under low extreme working conditions.

[0005] The technical solution of this utility model is:

[0006] A self-locking derrick support device includes a derrick support, a derrick body, an adjusting assembly, a support rod, a swing sleeve, a safety assembly, and a safety pin. The upper end of the derrick support is movably mounted on the derrick body via a rotating pin. The device is characterized in that: two sets of rotating sleeves are symmetrically mounted on both sides of the derrick support via rotating pin A; a support rod is mounted on the rotating sleeve via the adjusting assembly; a swing sleeve is movably mounted on the upper end of the derrick body via rotating pin B; the upper end of the support rod is inserted into the corresponding swing sleeve; a safety pin is mounted on one side of the swing sleeve via the safety assembly; the safety pin is intermittently inserted into the support rod.

[0007] The upper end of the support rod is provided with multiple insertion holes at intervals; the safety pin is inserted into the support rod through the insertion holes.

[0008] The safety assembly includes a guide tube and a safety cylinder; the guide tube is fixedly mounted on one side of the swing sleeve; a safety pin is installed inside the guide tube via the safety cylinder; during operation, the safety pin passes through the guide tube and is inserted into the support rod.

[0009] The guide tube is connected to the derrick body via a safety rope.

[0010] The adjustment assembly includes a threaded sleeve and a threaded rod; threaded sleeves are installed on the lower end of the support rod and on the rotating sleeve; one end of the threaded rod is threadedly connected to the threaded sleeve on the support rod, and the other end is connected to the threaded sleeve on the rotating sleeve; when the support rod rotates forward, the two sets of threaded sleeves move closer to each other, and when it rotates in the reverse direction, the two sets of threaded sleeves separate from each other.

[0011] The advantages of this utility model are:

[0012] This self-locking derrick support device has a compact structure and ingenious design. During operation, the connection between the derrick support and the derrick body can be further strengthened by the support rod, thereby improving the stability of the derrick and reducing the operational risks under extreme conditions. It is particularly suitable for use with workover rigs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model in its inverted state;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model in a vertical position;

[0015] Figure 3 for Figure 2 Schematic diagram of the structure in the C-direction;

[0016] Figure 4 for Figure 2 Enlarged structural diagram at point A;

[0017] Figure 5 for Figure 2 Enlarged structural diagram at point B;

[0018] Figure 6 for Figure 3 A magnified structural diagram at point D.

[0019] In the diagram: 1. Derrick support; 2. Rotating pin; 3. Derrick body; 4. Rotating pin A; 5. Rotating sleeve; 6. Adjusting assembly; 7. Support rod; 8. Rotating pin B; 9. Swing sleeve; 10. Safety assembly; 11. Safety pin; 12. Insertion hole; 13. Guide tube; 14. Safety cylinder; 15. Safety rope; 16. Threaded sleeve; 17. Threaded rod. Detailed Implementation

[0020] The self-locking derrick support device includes a derrick support 1, a derrick body 3, an adjusting assembly 6, a support rod 7, a swing sleeve 9, a safety assembly 10, and a safety pin 11; the upper end of the derrick support 1 is movably mounted on the derrick body 3 via a rotating pin 2 (see the attached instruction manual). Figure 1 ).

[0021] Two sets of rotating sleeves 5 are symmetrically mounted on both sides of the derrick support 1 via rotating pins A4; support rods 7 are mounted on the rotating sleeves 5 via adjusting components 6 (see instruction manual appendix). Figure 2 and 4 The adjusting assembly 6 includes a threaded sleeve 16 and a threaded rod 17 (see the attached instruction manual). Figure 4 ).

[0022] Threaded sleeves 16 are installed on the lower end of the support rod 7 and the rotating sleeve 5; one end of the threaded rod 17 is threadedly connected to the threaded sleeve 16 on the support rod 7, and the other end is connected to the threaded sleeve 16 on the rotating sleeve 5; when the support rod 7 rotates in the forward direction, the two sets of threaded sleeves 16 move closer to each other, and when it rotates in the reverse direction, the two sets of threaded sleeves 16 separate from each other.

[0023] The purpose of setting the adjustment component 6 in this way is to allow the relative position of the support rod 7 to be adjusted by rotating the threaded rod 17 in both directions during operation, so as to adjust the support rod 7 to the appropriate position during assembly.

[0024] The upper end of the derrick body 3 is movably fitted with a swing sleeve 9 via a rotating pin B8 (see instruction manual appendix). Figure 2 and 5 The upper end of the support rod 7 is inserted into the corresponding swing sleeve 9.

[0025] The upper end of the support rod 7 is provided with multiple insertion holes 12 at intervals (see the instruction manual). Figure 5 A safety pin 11 is installed on one side of the swing sleeve 9 via a safety assembly 10; the safety pin 11 is connected to the support rod 7 via a insertion hole 12.

[0026] Safety component 10 includes guide tube 13 and safety cylinder 14; guide tube 13 is fixedly installed on one side of the swing sleeve 9; safety pin 11 is installed in guide tube 13 through safety cylinder 14; during operation, safety pin 11 passes through guide tube 13 and is inserted into support rod 7.

[0027] Guide tube 13 is connected to derrick body 3 via safety rope 15 (see instruction manual appendix). Figure 5 The safety rope 15 serves to prevent the guide tube 13 from falling.

[0028] When the self-locking derrick support device is in operation, the safety pin 11 is separated from the support rod 7 when the derrick body 3 is in a reclining state.

[0029] As the derrick body 3 rotates to a vertical position, the support rod 7 and the swing sleeve 9 rotate relative to each other. When the derrick body 3 is in a vertical position, the safety cylinder 14 actuates, causing the safety pin 11 to pass through the guide tube 13 and connect with the support rod 7. At this time, the derrick body 3 remains fixedly connected to the support rod 7 through the safety pin 11 and the swing sleeve 9. In this way, the support rod 7 can achieve the purpose of strengthening the connection between the derrick support 1 and the derrick body 3.

[0030] When the self-locking derrick support device needs to be changed from a vertical state to a horizontal state, firstly, the safety cylinder 14 is activated to disengage the safety pin 1 from the support rod 7, and then the derrick body 3 is changed to a horizontal state.

[0031] This self-locking derrick support device has a compact structure and ingenious design. During operation, the connection between the derrick support 1 and the derrick body 3 can be further strengthened by the support rod 7, thereby improving the stability of the derrick and reducing the operational risks under extreme conditions. It is particularly suitable for the use of workover rigs.

Claims

1. A self-locking derrick support device, comprising a derrick support (1), a derrick body (3), an adjusting assembly (6), a support rod (7), a swing sleeve (9), a safety assembly (10), and a safety pin (11); the upper end of the derrick support (1) is movably mounted with the derrick body (3) via a rotating pin (2); characterized in that: Two sets of rotating sleeves (5) are symmetrically mounted on both sides of the derrick support (1) via rotating pin A (4); a support rod (7) is mounted on the rotating sleeve (5) via adjusting component (6); a swing sleeve (9) is movably mounted on the upper end of the derrick body (3) via rotating pin B (8); the upper end of the support rod (7) is inserted into the interior of the corresponding swing sleeve (9); a safety pin (11) is mounted on one side of the swing sleeve (9) via safety component (10); the safety pin (11) is intermittently inserted into the support rod (7).

2. The self-locking derrick support device according to claim 1, characterized in that: The upper end of the support rod (7) is provided with a plurality of insertion holes (12) at intervals; the safety pin (11) is inserted and connected to the support rod (7) through the insertion holes (12).

3. The self-locking derrick support device according to claim 1, characterized in that: The safety component (10) includes a guide tube (13) and a safety cylinder (14); the guide tube (13) is fixedly installed on one side of the swing sleeve (9); a safety pin (11) is installed in the guide tube (13) through the safety cylinder (14); during operation, the safety pin (11) passes through the guide tube (13) and is inserted into the support rod (7).

4. A self-locking derrick support device according to claim 3, characterized in that: The guide tube (13) is connected to the derrick body (3) by a safety rope (15).

5. A self-locking derrick support device according to claim 3, characterized in that: The adjustment component (6) includes a threaded sleeve (16) and a threaded rod (17); the lower end of the support rod (7) and the rotating sleeve (5) are both equipped with threaded sleeves (16); one end of the threaded rod (17) is threadedly connected to the threaded sleeve (16) on the support rod (7), and the other end is connected to the threaded sleeve (16) on the rotating sleeve (5); when the support rod (7) rotates in the forward direction, the two sets of threaded sleeves (16) move closer to each other, and when it rotates in the reverse direction, the two sets of threaded sleeves (16) separate from each other.

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