Rapidly disassembled and assembled propeller strut

Abstract

The invention discloses a quick disassembly and assembly type herringbone frame which comprises a left piece frame and a right piece frame which are arranged side by side, mounting foot bars are fixed to the left piece frame and the right piece frame in the longitudinal direction, lug base plates are fixed to the top ends of the left piece frame and the right piece frame, and the upper portions of the two lug base plates are jointly connected with a herringbone frame cross beam. A pair of connecting lug plates are fixed to each lug base bottom plate in parallel, the front sides of the pair of connecting lug plates are each provided with a V-shaped guide groove, the two V-shaped guide grooves directly face each other and are jointly provided with a positioning pin fixed to one end of a propeller strut cross beam in an erected mode, the positions, located above the rear sides of the V-shaped guide grooves, of the pair of connecting lug plates are each fixedly connected with a guide plate, and the top ends of the guide plates incline outwards. The rear sides of the pair of connecting lug plates are each provided with a pin hole, and the two pin holes are coaxial and jointly connected with a connecting pin penetrating through one end of the propeller strut cross beam. The propeller strut is convenient to mount and dismount, the influence of horizontal mounting of the propeller strut on mounting of other equipment is avoided, and the problem that the mounting efficiency is low due to the fact that parallel mounting operation cannot be achieved is effectively solved.

Description

Technical Field

[0001] This invention belongs to the field of petroleum machinery and equipment technology, specifically relating to a quick-assembly A-frame. Background Technology

[0002] Currently, with the continuous development of drilling rig technology, the performance of drilling rigs has been improved, and the efficiency of oil drilling operations is also constantly increasing. Along with this increased efficiency, the drilling cycle has been significantly shortened, leading to a growing proportion of time spent on pre-drilling preparations such as rig handling, assembly, and commissioning. Pre-drilling preparation time has gradually become a crucial factor affecting the drilling cycle. To reduce time costs, drilling contractors have placed higher demands on rig installation time, making the use of easily installable and structurally reliable equipment the optimal choice for shortening installation time.

[0003] During the actual installation of drilling rigs, the installation of large steel structure components is a significant and time-consuming task, especially the A-frame installation. The A-frame, a portal-type structure used to lift and support the derrick, must be installed before the derrick is raised, making it a crucial step in the drilling rig installation process. The A-frame's large span and numerous components further increase installation time and workload. Current technology is limited by site conditions; often, no aerial work platform is available, preventing personnel from installing the A-frame crossbeams at higher positions while the A-frame is upright. The only option is to first install the crossbeams horizontally and then rotate the entire A-frame to an upright position. However, horizontal A-frame installation occupies installation space for the drilling rig base equipment, meaning some base equipment can only be installed and tested after the A-frame is installed and rotated to an upright position. The installation of the A-frame cannot be carried out simultaneously with the installation and testing of other components, significantly reducing drilling rig installation efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a quick-assembly and disassembly A-frame, which solves the problem of low installation efficiency of existing A-frames.

[0005] The technical solution adopted in this invention is: a quick-assembly A-frame, including a left frame and a right frame arranged side by side. Mounting rods are fixed longitudinally on both the left and right frames. Ear base plates are fixed to the top of both the left and right frames. An A-frame crossbeam is connected above both ear base plates. A pair of connecting ear plates are fixed side by side on each ear base plate. A V-shaped guide groove is opened on the front side of each pair of connecting ear plates. The two V-shaped guide grooves face each other and together support a positioning pin fixed to one end of the A-frame crossbeam. A guide plate with its top tilting outwards is fixedly connected above the rear side of each pair of connecting ear plates. A pin hole is opened on the rear side of each pair of connecting ear plates. The two pin holes are coaxial and together connected to a connecting pin passing through one end of the A-frame crossbeam.

[0006] The invention is further characterized in that,

[0007] The A-frame beam has a portal frame structure and the width of the vertical section is less than the distance between a pair of connecting lugs. The positioning pin is connected to the front side of the vertical section of the A-frame beam, and a pin hole coaxial with the connecting pin is opened on the rear side of the vertical section of the A-frame beam.

[0008] A bracket is connected to the lower part of the horizontal section of the A-frame beam. A connecting pin is placed on the bracket, which is aligned with the pin hole of the connecting ear plate. The connecting pin is fixed to the bracket by a pin.

[0009] On each ear base plate, a lifting ear plate is fixed on the front and rear sides of a pair of connecting ear plates, and a lifting ring is connected to the lifting ear plate.

[0010] Both the left and right film holders are connected to bases at their bottom.

[0011] The beneficial effects of this invention are as follows: The quick-assembly A-frame of this invention, through the inverted flared structure formed by two guide plates and the V-shaped guide groove structure, combined with the positioning pin, can quickly achieve the centering guidance and snap-fit ​​positioning of the A-frame crossbeam at the top of the left and right frame sections. Then, it is precisely connected and locked by the connecting pin, which reduces the amount of installation work, makes installation and disassembly convenient, avoids the impact of horizontal A-frame installation on the installation of other equipment, and effectively solves the problem of low installation efficiency caused by the inability to perform parallel installation operations. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of the quick-assembly and disassembly A-frame of the present invention;

[0013] Figure 2 This is a right-side view of the quick-assembly A-frame of the present invention;

[0014] Figure 3 yes Figure 1 A partially enlarged schematic diagram of section I of the quick-assembly and disassembly A-frame of the present invention;

[0015] Figure 4 yes Figure 2 A partially enlarged schematic diagram of section II of the quick-assembly and disassembly A-frame of the present invention;

[0016] Figure 5 This is a schematic diagram of the structure of the quick-release and detachable A-frame middle ear seat of the present invention.

[0017] In the diagram, 1. Left frame, 2. Right frame, 3. Base, 4. A-frame crossbeam, 5. Ear seat, 6. Mounting step, 7. Positioning pin, 8. Bracket, 9. Connecting pin, 10. Pin, 11. Lifting ear plate, 12. Connecting ear plate, 13. Guide plate. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] Example 1

[0020] This invention provides a quick-assembly and disassembly A-frame, such as Figures 1 to 4 As shown, the system includes a left frame 1 and a right frame 2 arranged side by side. Each of the left and right frame frames 1 and 2 has an ear seat 5 fixed to its top. A gate-shaped A-frame beam 4 is connected above both ear seats 5. Each ear seat 5 includes a horizontal ear seat base plate. On each ear seat base plate, a pair of connecting ear plates 12 are fixed side by side, with a spacing not less than the width of the vertical section of the A-frame beam 4. A lifting ear plate 11 is fixed to the front and rear sides of each pair of connecting ear plates 12, and a lifting ring is connected to the lifting ear plate 11. Mounting steps 6 are fixed longitudinally on both the left and right frame frames 1 and 2. The mounting steps 6 have a semi-enclosed structure, with space on the rear and inner sides of both the left and right frame frames 1 and 2. Personnel can climb up the mounting steps 6 to perform the connection operation between the vertical section of the A-frame beam 4 and the connecting ear plates 12. Both the left and right film frames 1 and 2 are connected to a base 3. The left and right film frames 1 and 2 are respectively hoisted by the hoisting ear plate 11 and installed on the base 3 in an upright state by the fixing pin.

[0021] like Figure 5 As shown, each of the two connecting lugs 12 has a V-shaped guide groove on its front side. The two V-shaped guide grooves face each other and together support a positioning pin 7 fixed to the front side of the vertical section of one end of the A-frame beam 4 and parallel to its horizontal section. Each of the two connecting lugs 12 is fixedly connected to a guide plate 13 with its top tip tilting outwards above the rear side of the V-shaped guide grooves. The two guide plates 13 form an inverted flared structure. Each of the two connecting lugs 12 has a pin hole on its rear side, and the rear side of the vertical section of one end of the A-frame beam 4 also has a pin hole. The three pin holes are coaxial and pass through a connecting pin 9, achieving precise connection and locking. When installing the A-frame beam 4, insert the A-frame beam 4 into the lug 5 from above along the guide plate 13. The inverted flared structure formed by the guide plate 13 can hold the vertical section of the A-frame beam 4 and the positioning pin 7 above a pair of connecting lugs 12, thus facilitating the centering guidance of the A-frame beam 4 and preventing it from coming off the top of the left and right frames. Then, the positioning pin 7 slides down along the V-shaped guide groove and engages with it. The V-shaped guide groove can restrict the forward and backward movement of the A-frame beam 4, thereby simultaneously aligning the pin holes on the connecting lugs 12 with the pin holes on the vertical section of the A-frame beam 4. The gap between the pin hole of the connecting lug 12 and the connecting pin 9 is smaller than the gap between the positioning pin 7 and the V-shaped guide groove. In the working state, only the connecting pin 9 restricts the forward and backward movement of the A-frame beam 4. The V-shaped guide groove mainly serves as a guide during installation.

[0022] Through the above method, the quick-assembly A-frame of the present invention can quickly achieve the centering guidance and snap-fit ​​positioning of the A-frame beam 4 at the top of the left and right frame sections by using the inverted flared mouth structure formed by two guide plates 13 and the V-shaped guide groove structure, together with the positioning pin 7. Then, it can be precisely connected and locked by the connecting pin 9, which reduces the amount of installation work, makes installation and disassembly convenient, avoids the impact of horizontal installation of the A-frame on the installation of other equipment, and effectively solves the problem of low installation efficiency caused by the inability to perform parallel installation operations.

[0023] Example 2

[0024] This invention provides a quick-assembly and disassembly A-frame. Based on embodiment 1, brackets 8 are connected to the lower ends of both horizontal sections of the A-frame beam 4. Before installation, connecting pins 9 are placed on the brackets 8, facing the pin holes of the vertical sections of the A-frame beam 4. To prevent them from falling off, the connecting pins 9 are fixed to the brackets 8 by pins 10. The brackets 8 have fixing holes, and the connecting pins 9 have hanging rings. The pins 10 are passed through the fixing holes and hanging rings to connect the connecting pins 9 to the brackets 8, realizing the integrated hoisting of the A-frame beam 4 and the connecting pins 9. During installation, the fixing is released and the connecting pins 9 are pushed into the coaxial pin holes to achieve precise connection and locking. Oilfield drilling sites are often not equipped with aerial work platforms. When installing the A-frame beam 4 in an upright position, installers need to climb to the top of the left and right frames to manually install the connecting pins 9. By using brackets 8 to hoist the A-frame beam 4 and the connecting pins 9 together, the installation personnel can avoid carrying the connecting pins 9 while climbing, thus enabling the vertical installation of the A-frame at the drilling site even without aerial work platforms.

[0025] Example 3

[0026] This invention provides a quick-assembly and disassembly A-frame. During operation, the left frame 1 and right frame 2 are assembled on the ground. The left frame 1 and right frame 2 are then hoisted onto the base 3 using lifting lugs 11. All equipment on the A-frame beam 4 is then installed on the ground. Connecting pins 9 are installed on brackets 8, and pins 10 are used to connect brackets 8 and connecting pins 9 together, completing the assembly of the entire A-frame beam 4. The A-frame beam 4 is then hoisted as a whole and inserted from top to bottom into the inverted flared opening formed by guide plates 13. After insertion, positioning pins 7 slide along the V-shaped guide groove into connecting lugs 12. Installers can observe from the ground and direct the alignment and positioning of the connection points, eliminating the need for personnel to climb to heights and reducing the workload of the installers. After placing the A-frame crossbeam 4, the installers, carrying tools, climbed up the mounting steps 6 behind the left and right frame panels 1 and 2 to the bottom of the A-frame crossbeam 4. They removed the safety pins 10 and then pushed the connecting pins 9 along the bracket 8 into the pin holes of the connecting ear plates 12. The connecting pins 9 ensured a precise connection, thus securing the A-frame crossbeam 4. The entire A-frame installation was then complete.

Claims

1. A quick-assembly and disassembly A-frame, characterized in that, It includes a left frame (1) and a right frame (2) arranged side by side. Both the left frame (1) and the right frame (2) are fixed with mounting rods (6) along the longitudinal direction. The top of the left frame (1) and the right frame (2) are fixed with ear base plates. The two ear base plates are connected to the A-frame crossbeam (4) above each ear base plate. Each ear base plate is fixed with a pair of connecting ear plates (12) arranged side by side. Each pair of connecting ear plates (12) has a V-shaped guide groove on its front side. The two V-shaped guide grooves face each other and are jointly supported by a positioning pin (7) fixed to one end of the A-frame crossbeam (4). Each pair of connecting ear plates (12) is fixed with a guide plate (13) with its top tip tilted outward above the rear side of the V-shaped guide groove. Each pair of connecting ear plates (12) has a pin hole on its rear side. The two pin holes are coaxial and are connected to a connecting pin (9) that passes through one end of the A-frame crossbeam (4).

2. The quick-assembly A-frame as described in claim 1, characterized in that, The A-frame beam (4) is a portal frame structure and the width of the vertical section is less than the distance between a pair of connecting ear plates (12). The positioning pin (7) is connected to the front side of the vertical section of the A-frame beam (4), and a pin hole coaxial with the connecting pin (9) is opened on the rear side of the vertical section of the A-frame beam (4).

3. The quick-assembly A-frame as described in claim 2, characterized in that, A bracket (8) is connected below the horizontal section of the A-frame beam (4). A connecting pin (9) is placed on the bracket (8) facing the pin hole of the connecting ear plate (12). The connecting pin (9) is fixed to the bracket (8) by a pin (10).

4. The quick-assembly A-frame as described in claim 1, characterized in that, Each ear base plate has a lifting ear plate (11) fixed on the front and rear sides of a pair of connecting ear plates (12), and a lifting ring is connected to the lifting ear plate (11).

5. The quick-assembly A-frame as described in claim 1, characterized in that, Both the left and right film holders (1 and 2) are connected to a base (3).

Images