An opening and closing device and an opening and closing method for a large-size clamp locking structure

Abstract

The present application relates to an opening and closing device of a large-size clamp locking structure, and relates to the technical field of pressure vessels. The opening and closing device comprises: a square frame, which is arranged on the periphery of the large-size clamp; four groups of hydraulic cylinders, wherein the upper and lower groups of hydraulic cylinders are arranged vertically, and the two ends are respectively fixed to the crossbeam and arc segment of the square frame; the left and right groups of hydraulic cylinders are arranged horizontally, and the two ends are respectively fixed to the vertical beam and arc segment of the square frame; two gantry hangers are arranged across the crossbeam, and the bottom ends are respectively connected to the left and right lobe arc segments; two roller table assemblies are respectively arranged between the two gantry hangers and the crossbeam, used to assist the gantry hangers to slide along the crossbeam, and also used to adjust and drive the gantry hangers to move perpendicular to the crossbeam. The opening and closing device and the opening and closing method of the present application solve the technical problems that the traditional technical solutions are difficult to disassemble and assemble and prone to misalignment.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessels, and in particular to an opening and closing device and an opening and closing method of a large-size clamp locking structure. Background Art

[0002] With the progress and development of science and technology in my country, the demand for large pressure vessels with large diameter, large clearance and high pressure parameters is also increasing. There are mainly two types of layout: vertical and horizontal. The two layouts have their own advantages and disadvantages. The appropriate layout should be selected according to different test requirements.

[0003] For large-caliber, large-headroom, horizontal, high-pressure vessels, in order to meet their quick-opening requirements, the clamp locking structure has better force and saves more materials than the traditional flange bolt fastening structure, and only requires a few bolts to be installed and removed, which makes the installation and disassembly workload smaller and more convenient. The clamp locking structure has gradually become the first choice for the locking structure of large-caliber, large-headroom, high-pressure quick-opening vessels.

[0004] In the related technology, the clamps of large-caliber, large-headroom, high-pressure parameter containers are generally made of forgings. According to the different locking structures of the clamps, they can be divided into two types: concave and convex. Among them, the concave clamp is a more suitable choice because it has better force, saves more materials and has relatively less processing. Figure 1 (a) is an external lug clamp, such as Figure 1 (b) in the middle is a concave clamp.

[0005] Furthermore, whether it is a concave clamp or a convex clamp, the clamp used for large-diameter, large-headroom horizontal high-pressure vessels is larger in size and is divided into 4 petals for processing and assembly. Each petal forms a 90-degree arc. When closed, the petals are locked by bolts to form a whole. When opened, it can be opened as follows Figure 2 As shown in (c) in the figure, each clamp is separated from the flange separately, or as Figure 2 As shown in (d), each two petals are formed into a whole and then separated from the flange. Comparing the two opening methods, the 4-petal clamp has a shorter opening stroke and is lighter in weight. It is easier to adjust in case of failure, which is a better opening method. In the actual disassembly and assembly process, the large-size clamp 1 is mainly disassembled and assembled with the assistance of various cranes and brackets.

[0006] However, there are also some problems in the disassembly and application of the 4-petal clamp:

[0007] ① The clamp has large dimensions, and even a single clamp weighs dozens of tons. Although it can be assisted by a crane, it is still difficult to disassemble and assemble, and the efficiency is low.

[0008] ② Large-caliber, large-headroom, high-pressure parameter containers are large in size and weight, such as Figure 3As shown, the container will be axially deformed due to the internal pressure during use, resulting in a first misalignment of 100 between the clamp lip 12 and the flange protrusion 2 (located at the butt joint of the two half flanges) after the clamp 1 is opened and closed. As a result, the clamp lip 12 cannot completely clamp the flange protrusion 2. It is necessary to be able to axially adjust the position of the clamp 1 so that the clamp lip 12 can clamp the flange protrusion 2.

[0009] ③ The civil foundation will settle and the flange will shift, and the clamp 1 must be able to make corresponding adjustments to adapt to the offset deformation of the flange surface; according to the provisions of the standard specifications, the gap between the bolt shaft and the hole is generally 3mm. Due to the particularity of the petal structure, each time it is opened and closed, there will be a second misalignment between one petal arc segment 11 and the other petal arc segment 11, which makes it difficult for the bolt to pass through the bolt hole, or even impossible to pass through. Summary of the invention

[0010] The present application provides an opening and closing device and an opening and closing method for a large-size clamp locking structure, which solve the technical problems that the traditional technical solution is difficult to disassemble and assemble and is prone to misalignment.

[0011] In a first aspect, an embodiment of the present application provides an opening and closing device of a large-size clamp locking structure, wherein the large-size clamp comprises four-petal arc segments of upper, lower, left and right petals, and the opening and closing device comprises:

[0012] A square frame, the frame of which is arranged outside the large-sized clamp;

[0013] Four groups of hydraulic cylinders, the upper and lower groups of hydraulic cylinders are arranged vertically, and the two ends are respectively fixed to the cross beam and arc segment of the square frame; the left and right groups of hydraulic cylinders are arranged horizontally, and the two ends are respectively fixed to the vertical beam and arc segment of the square frame;

[0014] Two gantry hangers are arranged across the crossbeam, and the bottom ends of the two gantry hangers are respectively connected to the left and right arc segments;

[0015] Two rolling platform assemblies are respectively arranged between the two gantry hangers and the cross beam, and are used to assist the gantry hangers to slide along the cross beam, and are also used to adjust and drive the gantry hangers to move perpendicularly to the cross beam.

[0016] In combination with the first aspect, in one embodiment, the opening and closing device further includes four guide plates, which are respectively arranged between the mating surfaces of two adjacent arc segments, and one end of each guide plate is fixed to one of the arc segments of the mating surface by a screw, and the other end is suspended.

[0017] In combination with the first aspect, in one embodiment, the opening and closing device further includes two synchronization mechanism assemblies, and the two synchronization mechanism assemblies are respectively arranged between the left group of hydraulic cylinders and the left gantry hanger, and between the right group of hydraulic cylinders and the right gantry hanger; the synchronization mechanism assembly is used to ensure the synchronous lateral movement of the hydraulic cylinder and the gantry hanger when opening and closing the large-size clamp.

[0018] In combination with the first aspect, in one embodiment, the roller table assembly includes a base plate, a roller table and a top screw. The base plate is arranged along the cross beam in the length direction and fixed to the top surface of the cross beam. Upper flanges are arranged on both sides of the width direction of the base plate to form grooves. The roller table is arranged in the groove of the base plate, and the top screws are arranged on both sides of the roller table, and the top screws are used to adjust the position of the roller table perpendicular to the cross beam.

[0019] In combination with the first aspect, in one embodiment, the square frame further includes a support block, which is fixedly arranged on the inner side of the bottom cross beam, and an arc-shaped supporting surface is arranged on the top of the support block; the arc-shaped supporting surface has a certain gap with the outer surface of the large-size clamp in the overall state, and when the lower lobe arc-shaped segment is removed downward, the support block is used to support the lower lobe arc-shaped segment.

[0020] In combination with the first aspect, in one embodiment, the square frame further includes four triangular support frames, and the four triangular support frames are diagonally fixed to the inner side of the right angle formed by the horizontal beam and the vertical beam.

[0021] In combination with the first aspect, in one embodiment, the square frame further includes a balance beam, and the balance beam is vertically arranged at the bottom of the two vertical beams.

[0022] In a second aspect, an embodiment of the present application provides an opening and closing method based on the above-mentioned opening and closing device, comprising the following steps:

[0023] When opening, first open the left and right arc segments, and remove the bolts between the two adjacent arc segments;

[0024] The left and right hydraulic cylinders provide power to drag the left and right arc segments to move horizontally, and at the same time, the gantry hanger moves horizontally synchronously through the roller assembly until the left and right arc segments are fully opened;

[0025] The upper and lower hydraulic cylinders provide power to drag the upper and lower arc segments to move vertically until the left and right arc segments are fully opened;

[0026] When closing, repeat the opposite action, first close the left and right arc segments, and then close the upper and lower arc segments.

[0027] In combination with the second aspect, in one embodiment, the opening and closing device further comprises two synchronization mechanism assemblies, and the two synchronization mechanism assemblies are respectively arranged between the left group of hydraulic cylinders and the left gantry hanger, and between the right group of hydraulic cylinders and the right gantry hanger;

[0028] The left and right hydraulic cylinders provide power to drag the left and right arc segments to move horizontally, and the gantry hanger moves horizontally synchronously through the roller assembly, including:

[0029] The extended ends of the left and right hydraulic cylinders are retracted, and the hydraulic cylinders drive the gantry hanger to move synchronously laterally through the synchronous mechanism assembly and the roller assembly.

[0030] In combination with the second aspect, in one embodiment, the roller table assembly includes a base plate, a roller table and a top screw. The base plate is arranged along the cross beam in the length direction and fixed to the top surface of the cross beam. Upper flanges are arranged on both sides of the width direction of the base plate to form grooves. The roller table is arranged in the groove of the base plate, and the top screws are arranged on both sides of the roller table, and the top screws are used to adjust the position of the roller table perpendicular to the cross beam.

[0031] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0032] The opening and closing device of the present application comprises a square frame, four groups of hydraulic cylinders, two gantry hangers and two roller table assemblies. The square frame, hydraulic cylinders and gantry hangers not only provide power for disassembling and assembling the arc segments, but also can realize direct radial disassembly, which is convenient for subsequent restoration and assembly. Compared with the traditional crane-assisted disassembly and assembly, the labor difficulty is greatly reduced and the efficiency is higher. At the same time, the two roller table assemblies can not only assist the gantry hangers to slide along the beam, but also adjust and drive the gantry hangers to move perpendicular to the beam. When the arc segments of the large-size clamps are disassembled and then closed, if the clamp lip and the flange protrusion have a first misalignment, the roller table assembly can drive the gantry hanger to move perpendicular to the beam, and then the gantry hanger drives the arc segments to move. The position of the clamp lip can be adjusted to eliminate the first misalignment and adapt to the flange protrusion, so that the clamp lip can clamp the flange protrusion to achieve locking, thereby solving the installation misalignment problem and being convenient and quick.

[0033] The opening and closing device of the present application has a guide plate arranged between the ends of the arc segments, which is used to guide the movement of the arc segments, limit the movement trajectory of the arc segments when closing, and avoid the axial misalignment between the arc segments to cause a second misalignment, which results in the inability to penetrate and lock the bolts between adjacent arc segments, thereby greatly improving the efficiency of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 Schematic diagram of an external lug clamp (a) and an internal concave clamp (b) in the prior art;

[0036] Figure 2 Schematic diagrams of a single-flap cover opening (c) and a double-flap cover opening (d) of a large-size clamp in the prior art;

[0037] Figure 3 Schematic diagram of the cross section of a large-size clamp in the prior art, wherein (e) is a schematic diagram of the normal position of the clamp lip and the flange protrusion, and (f) is a schematic diagram of the first misalignment formed by the clamp lip and the flange protrusion;

[0038] Figure 4 A schematic diagram of an opening and closing device provided in an embodiment of the present application installed on a large-sized clamp;

[0039] Figure 5 for Figure 4 Left view of

[0040] Figure 6 for Figure 5 A partial enlarged view of middle A;

[0041] In the figure: 1. large-size clamp; 11. arc segment; 12. clamp lip; 2. flange protrusion; 100. first misalignment; 3. opening and closing device; 31. square frame; 311. crossbeam; 312. vertical beam; 313. triangular support frame; 314. balance beam; 315. support block; 32. hydraulic cylinder; 33. gantry hanger; 34. roller assembly; 35. synchronization mechanism assembly; 36. guide plate; 341. bottom plate; 342. roller; 343. top screw. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] The embodiment of the present application provides an opening and closing device with a large-size clamp locking structure, which solves the technical problems of difficult disassembly and assembly and easy misalignment of the traditional technical solutions, reduces labor intensity, and can meet various complex adjustment requirements and the needs of quick disassembly and assembly of containers.

[0044] like Figure 4 , Figure 5 and Figure 6 As shown, the present application discloses an embodiment of an opening and closing device of a large-size clamp locking structure, wherein the large-size clamp 1 comprises four-petal arc-shaped segments 11, namely, upper, lower, left and right.

[0045] The opening and closing device 3 comprises a square frame 31, four groups of hydraulic cylinders 32, two door-type hangers 33 and two roller table assemblies 34. The square frame 31 is framed on the periphery of the large-size clamp 1.

[0046] The four groups of hydraulic cylinders 32 are divided into two groups of upper and lower hydraulic cylinders 32 and two groups of left and right hydraulic cylinders 32. The upper and lower groups of hydraulic cylinders 32 are vertically arranged, and the two ends are respectively fixed to the crossbeam 311 and the arc segment 11 of the square frame 31. Specifically, the two ends of the upper group of hydraulic cylinders 32 are respectively fixed to the upper crossbeam 311 of the square frame 31 and the upper lobe arc segment 11 of the large-size clamp 1. The two ends of the lower group of hydraulic cylinders 32 are respectively fixed to the lower crossbeam 311 of the square frame 31 and the lower lobe arc segment 11 of the large-size clamp 1.

[0047] The left and right hydraulic cylinders 32 are arranged horizontally, and the two ends are fixed to the vertical beam 312 and the arc segment 11 of the square frame 31. Specifically, the two ends of the left hydraulic cylinder 32 are fixed to the left cross beam 311 of the square frame 31 and the left arc segment 11 of the large-size clamp 1. The two ends of the right hydraulic cylinder 32 are fixed to the right cross beam 311 of the square frame 31 and the right arc segment 11 of the large-size clamp 1.

[0048] Preferably, each group of hydraulic cylinders 32 includes two hydraulic cylinders 32 , each hydraulic cylinder 32 has a fixed end and a movable end, the fixed end of the hydraulic cylinder 32 is fixed to the vertical beam 312 or the horizontal beam 311 of the square frame 31 , and the movable end of the hydraulic cylinder 32 is fixed to the arc segment 11 .

[0049] To facilitate disassembly, the horizontal beam 311 and the vertical beam 312 are designed to be a detachable structure, which is convenient to manufacture and transport.

[0050] Two vertically arranged gantry hangers 33 are arranged across the cross beam 311 , and the bottom ends of the two gantry hangers 33 are respectively connected to the left and right lobe arc segments 11 .

[0051] Two roller assemblies 34 are respectively arranged between the two gantry hangers 33 and the cross beam 311, and are used to assist the gantry hangers 33 to slide along the cross beam 311, and are also used to adjust and drive the gantry hangers 33 to move perpendicularly to the cross beam 311. Specifically, a roller assembly 34 is designed between the cross beam 311 and the gantry hanger 33, which greatly reduces the friction between the gantry hanger 34 and the cross beam 311 when the gantry hanger 34 moves.

[0052] Specifically, the gantry hanger 33 is arranged across the crossbeam 311 , and the gantry hanger 33 bears the weight of the left and right two-lobed arc segments 11 of the large-size clamp 1 . The weight and movement of the upper and lower two-lobed arc segments 11 are borne by the upper and lower groups of hydraulic cylinders 32 .

[0053] In one embodiment, the inner diameter of the large-size clamp reaches more than 5m, the weight of each arc segment 11 reaches more than 70t, and the length of the horizontal beam and vertical beam of the square frame 31 reaches 13.2m.

[0054] Specifically, after being installed once, the opening and closing device 3 is fixed in place, which facilitates the disassembly and assembly of the large-sized clamp in the future.

[0055] The opening and closing device of the present application comprises a square frame 31, four groups of hydraulic cylinders 32, two gantry hangers 33 and two roller table assemblies 34. The square frame 31, the hydraulic cylinders 32 and the gantry hangers 33 not only provide power for disassembling and assembling the arc segment 11, but also enable direct radial disassembly, which is convenient for subsequent restoration and assembly. Compared with the traditional crane-assisted disassembly and assembly, the labor difficulty is greatly reduced and the efficiency is higher.

[0056] At the same time, the two roller assemblies 34 can not only assist the gantry hanger 33 to slide along the beam 311, but also adjust and drive the gantry hanger 33 to move perpendicular to the beam 311. When the arc segment 11 of the large-size clamp 1 is disassembled and then closed, if the clamp lip and the flange protrusion have a first misalignment of 100, the gantry hanger 33 can be driven by the roller assembly 34 to move perpendicular to the beam 311, and then the gantry hanger 33 drives the arc segment 11 to move. The position of the clamp lip 12 can be adjusted to eliminate the first misalignment of 100 and adapt to the flange protrusion, so that the clamp lip 12 can clamp the flange protrusion to achieve locking, thereby solving the problem of installation misalignment and being convenient and quick.

[0057] Furthermore, the overall design of the square frame 31 is stable and reliable, that is, it serves as a carrier for the weight of the large-sized clamp 1 and as a carrier for the power system. Compared with various cranes and brackets in the prior art, it has a compact structure and occupies a small area.

[0058] The roller assembly 34 changes sliding friction into rolling friction, thereby reducing the friction force that needs to be overcome when the gantry hanger 33 moves, and at the same time, a means for adjusting the position of the clamp lip is reserved to avoid misalignment between the clamp lip and the flange protrusion.

[0059] In one embodiment, the opening and closing device further includes four guide plates 36, which are respectively arranged between the mating surfaces of two adjacent arc segments 11, and one end of each guide plate 36 is fixed to one of the arc segments 11 of the mating surface by a screw, and the other end is suspended.

[0060] The guide plate 36 is mainly used for guiding. The guide plate arranged between the arc segments 11 of the large-size clamp 1 is used to guide the movement of the arc segments 11, that is, it can limit the movement trajectory of the arc segments 11 when closing, and avoid the axial misalignment between the arc segments 11 to cause a second misalignment, resulting in the inability to penetrate and lock the bolts between adjacent arc segments 11.

[0061] Specifically, the four guide plates 36 are fixed to the ends of the left and right arc-shaped segments 11 respectively by screws.

[0062] The opening and closing device of the present application has a guide plate arranged between the ends of the arc segments 11, which is used to guide the movement of the arc segments 11, limit the movement trajectory of the arc segments 11 when closing, and avoid the axial misalignment between the arc segments 11 to cause a second misalignment, which results in the inability to penetrate and lock the bolts between adjacent arc segments 11, thereby greatly improving the efficiency of assembly.

[0063] In one embodiment, the opening and closing device further includes two synchronization mechanism assemblies 35, which are respectively arranged between the left group of hydraulic cylinders 32 and the left gantry hanger 33, and between the right group of hydraulic cylinders 32 and the right gantry hanger 33; the synchronization mechanism assembly 35 is used to ensure that the hydraulic cylinder 32 and the gantry hanger 33 move synchronously laterally when opening and closing the large-size clamp 1.

[0064] Specifically, one synchronization mechanism assembly 35 ensures that the left group of hydraulic cylinders 32 and the left gantry hanger 33 move horizontally in sync, and another synchronization mechanism assembly 35 ensures that the right group of hydraulic cylinders 32 and the right gantry hanger 33 move horizontally in sync.

[0065] Preferably, the upper and lower groups of hydraulic cylinders are provided with displacement sensors to detect the movement stroke of the arc segment 11, so that the process can be controlled and the operation is convenient.

[0066] Furthermore, the synchronization mechanism assembly 35 is mainly composed of multiple fixed pulleys and steel wire ropes. Taking the opening of the right arc segment 11 as an example, the right group of hydraulic cylinders 32 retracts to the right, the steel wire rope retracts, and the right gantry hanger 33 is pulled in reverse direction through multiple fixed pulleys.

[0067] The opening and closing device of the present application is further equipped with two synchronization mechanism assemblies 35 on the basis of the roller assembly 34. One synchronization mechanism assembly 35 ensures the synchronous horizontal movement of the left group of hydraulic cylinders 32 and the left gantry hanger 33, and the other synchronization mechanism assembly 35 ensures the synchronous horizontal movement of the right group of hydraulic cylinders 32 and the right gantry hanger 33, so that the radial opening and closing of the arc segment 11 is easier to achieve, safer, more reliable and more efficient.

[0068] In one embodiment, the roller assembly 34 includes a bottom plate 341, a roller 342 and a top screw 343. The bottom plate 341 is arranged along the cross beam 311 in the length direction and fixed to the top surface of the cross beam 311. Upper flanges are arranged on both sides of the bottom plate 341 in the width direction to form a groove.

[0069] The rolling table 342 is disposed in a groove of the bottom plate 341 . The rolling direction of the rolling table 342 is along the length direction of the beam 311 . The top screws 343 are disposed on both sides of the rolling table 342 to adjust the position of the rolling table 342 perpendicular to the beam 311 .

[0070] Specifically, the position of the roller 342 perpendicular to the beam 311 is changed, thereby changing the position of the gantry hanger 33 relative to the beam 311, so as to adjust the position of the clamp lip 12 of the large-size clamp 1 relative to the flange protrusion 2, thereby eliminating the first misalignment amount 100.

[0071] When the flange protrusion 2 moves axially, resulting in a first misalignment of 100 between the clamp lip 12 and the flange protrusion 2, and the flange cannot be locked, the position of the roller 342 can be adjusted by adjusting the position of the clamp lip 12 through the top screw 343 to indirectly adjust the position of the clamp lip 12 to ensure that the clamp can lock the flange.

[0072] In one embodiment, the square frame 31 further includes a support block 315 . The support block 315 is fixedly disposed on the inner side of the bottom cross beam 311 , and an arc-shaped supporting surface is disposed on the top of the support block 315 .

[0073] There is a certain gap between the arc-shaped supporting surface and the outer surface of the large-size clamp 1 in the integral state. When the lower petal arc-shaped segment 11 is removed downward, the support block 315 is used to support the lower petal arc-shaped segment 11.

[0074] In one embodiment, the square frame 31 further includes four triangular support frames 313 , and the four triangular support frames 313 are diagonally fixed to the inner side of the right angle formed by the horizontal beam 311 and the vertical beam 312 to reinforce the square frame 31 and improve the stability of the square frame 31 .

[0075] like Figure 5 As shown, in one embodiment, the square frame 31 further includes a balance beam 314 , which is vertically disposed at the bottom of the two vertical beams 312 to keep the entire opening and closing device 3 balanced.

[0076] It is worth noting that the opening and closing device of the present application is applicable to various clamp structures, and the accompanying drawings illustrate the concave clamp structure.

[0077] The present application discloses an opening and closing method based on the above-mentioned opening and closing device, comprising the following steps:

[0078] When opening, first open the left and right arc segments 11, and remove the bolts between the two adjacent arc segments 11;

[0079] The left and right hydraulic cylinders 32 provide power to drag the left and right arc segments 11 to move horizontally, and at the same time, the gantry hanger 33 moves horizontally synchronously through the roller assembly 34 until the left and right arc segments 11 are fully opened;

[0080] The upper and lower hydraulic cylinders 32 provide power to drag the upper and lower arc segments 11 to move vertically until the left and right arc segments 11 are fully opened;

[0081] When closing, the opposite action is repeated, first closing the left and right arc segments 11, and then closing the upper and lower arc segments 11.

[0082] Regarding the opening and closing method, in one embodiment, the opening and closing device also includes two synchronization mechanism assemblies 35, and the two synchronization mechanism assemblies 35 are respectively arranged between the left group of hydraulic cylinders 32 and the left gantry hanger 33, and between the right group of hydraulic cylinders 32 and the right gantry hanger 33; the synchronization mechanism assembly 35 is used to ensure the synchronous lateral movement of the hydraulic cylinder 32 and the gantry hanger 33 when opening and closing the large-size clamp 1.

[0083] Specifically, one synchronization mechanism assembly 35 ensures that the left group of hydraulic cylinders 32 and the left gantry hanger 33 move horizontally in sync, and another synchronization mechanism assembly 35 ensures that the right group of hydraulic cylinders 32 and the right gantry hanger 33 move horizontally in sync.

[0084] Preferably, the upper and lower groups of hydraulic cylinders are provided with displacement sensors to detect the movement stroke of the arc segment 11, so that the process can be controlled and the operation is convenient.

[0085] Furthermore, the synchronization mechanism assembly 35 is mainly composed of multiple fixed pulleys and steel wire ropes. Taking the opening of the right arc segment 11 as an example, the right group of hydraulic cylinders 32 retracts to the right, the steel wire rope retracts, and the right gantry hanger 33 is pulled in reverse direction through multiple fixed pulleys.

[0086] The left and right hydraulic cylinders 32 provide power to drag the left and right arc segments 11 to move horizontally, while the gantry hanger 33 moves horizontally synchronously through the roller assembly 34, including:

[0087] The extended ends of the left and right hydraulic cylinders 32 are retracted, and the hydraulic cylinders 32 drive the gantry hanger 33 to move synchronously laterally through the synchronization mechanism assembly 35 and the roller assembly 34.

[0088] Regarding the opening and closing method, in one embodiment, the roller assembly 34 includes a bottom plate 341, a roller 342 and a top screw 343. The bottom plate 341 is arranged along the cross beam 311 in the length direction and fixed to the top surface of the cross beam 311. Upper flanges are arranged on both sides of the bottom plate 341 in the width direction to form a groove.

[0089] The rolling table 342 is disposed in a groove of the bottom plate 341 . The rolling direction of the rolling table 342 is along the length direction of the beam 311 . The top screws 343 are disposed on both sides of the rolling table 342 to adjust the position of the rolling table 342 perpendicular to the beam 311 .

[0090] Specifically, the position of the roller 342 perpendicular to the beam 311 is changed, thereby changing the position of the gantry hanger 33 relative to the beam 311, so as to adjust the position of the clamp lip 12 of the large-size clamp 1 relative to the flange protrusion 2, thereby eliminating the first misalignment amount 100.

[0091] When the flange protrusion 2 moves axially, resulting in a first misalignment of 100 between the clamp lip 12 and the flange protrusion 2, and the flange cannot be locked, the position of the roller 342 can be adjusted by adjusting the position of the clamp lip 12 through the top screw 343 to indirectly adjust the position of the clamp lip 12 to ensure that the clamp can lock the flange.

[0092] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0093] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0094] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An opening and closing device of a large-size clamp locking structure, wherein the large-size clamp (1) comprises four upper, lower, left and right arc-shaped segments (11), characterized in that: The opening and closing device (3) comprises: A square frame (31) is arranged outside the large-sized clamp (1); Four groups of hydraulic cylinders (32), wherein the upper and lower groups of hydraulic cylinders (32) are vertically arranged, and the two ends of the hydraulic cylinders are respectively fixed to the cross beam (311) and the arc segment (11) of the square frame (31); and the left and right groups of hydraulic cylinders (32) are horizontally arranged, and the two ends of the hydraulic cylinders are respectively fixed to the vertical beam (312) and the arc segment (11) of the square frame (31); Two gantry hangers (33) are arranged across the crossbeam (311), and the bottom ends of the two gantry hangers are respectively connected to the left and right arc segments (11); Two rolling platform assemblies (34) are respectively arranged between the two gantry hangers (33) and the cross beam (311), and are used to assist the gantry hangers (33) to slide along the cross beam (311), and are also used to adjust and drive the gantry hangers (33) to move perpendicularly to the cross beam (311); The opening and closing device further comprises two synchronization mechanism assemblies (35), the two synchronization mechanism assemblies (35) being respectively arranged between the left group of hydraulic cylinders (32) and the left side gantry hanger (33), and between the right group of hydraulic cylinders (32) and the right side gantry hanger (33); the synchronization mechanism assemblies (35) are used to ensure that the hydraulic cylinders (32) and the gantry hangers (33) move synchronously and laterally when opening and closing the large-size clamp (1); The rolling table assembly (34) comprises a bottom plate (341), a rolling table (342) and a top screw (343); the bottom plate (341) is arranged along the cross beam (311) in the length direction and is fixed to the top surface of the cross beam (311); upper flanges are arranged on both sides of the bottom plate (341) in the width direction to form a groove; the rolling table (342) is arranged in the groove of the bottom plate (341), the top screw (343) is arranged on both sides of the rolling table (342), and the top screw (343) is used to adjust the position of the rolling table (342) perpendicular to the cross beam (311); The synchronization mechanism assembly (35) is composed of a plurality of fixed pulleys and steel wire ropes. When the left and right hydraulic cylinders (32) retract, the steel wire ropes retract and switch directions through the plurality of fixed pulleys to pull the left and right side door hangers (33) respectively.

2. An opening and closing device of a large-size clamp locking structure as claimed in claim 1, characterized in that: The opening and closing device further comprises four guide plates (36), which are respectively arranged between the butt joint surfaces of two adjacent arcuate segments (11), one end of each guide plate (36) being fixed to one of the arcuate segments (11) of the butt joint surface by means of screws, and the other end being suspended in the air.

3. An opening and closing device of a large-size clamp locking structure as claimed in claim 1, characterized in that: The square frame (31) further comprises a support block (315), wherein the support block (315) is fixedly arranged on the inner side of the bottom cross beam (311), and an arc-shaped supporting surface is arranged on the top of the support block (315); there is a certain gap between the arc-shaped supporting surface and the outer surface of the large-size clamp (1) in the integral state, and when the lower petal arc-shaped segment (11) is removed downward, the support block (315) is used to support the lower petal arc-shaped segment (11).

4. An opening and closing device of a large-size clamp locking structure as claimed in claim 1, characterized in that: The square frame (31) further comprises four triangular support frames (313), and the four triangular support frames (313) are diagonally fixed to the inner side of the right angle formed by the horizontal beam (311) and the vertical beam (312).

5. The opening and closing device of the large-size clamp locking structure according to claim 1, characterized in that: The square frame (31) further comprises a balance beam (314), and the balance beam (314) is vertically arranged at the bottom of the two vertical beams (312).

6. An opening and closing method based on the opening and closing device according to claim 1, characterized in that: The following steps are involved: When opening, first open the left and right arc segments (11), and remove the bolts between the two adjacent arc segments (11); The left and right hydraulic cylinders (32) provide power to drag the left and right arc segments (11) to move horizontally, and the gantry hanger (33) moves horizontally synchronously through the roller assembly (34) until the left and right arc segments (11) are fully opened; The upper and lower hydraulic cylinders (32) provide power to drag the upper and lower arc segments (11) to move vertically until the left and right arc segments (11) are fully opened; When closing, the opposite action is repeated, first closing the left and right arc segments (11), and then closing the upper and lower arc segments (11).

7. The opening and closing method according to claim 6, characterized in that: The left and right hydraulic cylinders (32) provide power to drag the left and right arc segments (11) to move horizontally, and the gantry hanger (33) moves horizontally synchronously through the roller assembly (34), comprising: The extended ends of the left and right hydraulic cylinders (32) are retracted, and the hydraulic cylinders (32) drive the gantry hanger (33) to move synchronously and laterally through the synchronous mechanism assembly (35) and the rolling platform assembly (34).

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