Hoisting tool for casing of axial flow compressor

Abstract

The hoisting tool comprises a hoisting ring main body, a hoisting hook is arranged at the top of the hoisting ring main body, two groups of rotating joints are symmetrically arranged on two side walls of the hoisting ring main body, each rotating joint is rotatably connected with a hoisting structure, and a balance structure is arranged between the two symmetrical hoisting structures; each hoisting structure comprises a locking piece rotationally connected with the corresponding rotating joint, a hoisting arm is fixedly connected to the tail end of each locking piece, a telescopic assembly is rotationally connected to each hoisting arm, a hook is arranged at the tail end of each telescopic assembly, and the two rotating joints are quickly connected with the two corresponding hoisting structures, so that the hoisting arms and the hoisting ring main body are mounted and dismounted; the two groups of lifting arms are matched with the rotary joint to conveniently and freely rotate in the horizontal direction, so that the orientation is adjusted, the total length of the lifting structure and the telescopic assembly is accurately controlled by adjusting the telescopic assembly, the lifting tool is suitable for lifting of machine shells of different sizes, and the technical problem that a lifting tool in the prior art is not high in universality is solved.

Description

Technical Field

[0001] The utility model belongs to the field of compressors and relates to a hoisting tool, in particular to a hoisting tool for an axial flow compressor casing. Background Art

[0002] An axial-flow compressor is a turbine mechanical equipment that provides compressed air. It is the core equipment of production processes such as metallurgy, chemical industry, petrochemical industry, and pharmaceutical industry. The casing of an axial-flow compressor is both the bearing structure of internal components and an integral part of the compressed gas flow channel. In order to meet the needs of the production and use processes, the casing needs to be hoisted and assembled during the processing process.

[0003] The axial flow compressor casing has four lifting ears, one at each of the four corners of the casing, and is currently hoisted by a sling. The existing hoisting form is not easy to adjust and will be restricted during use, so it is necessary to design a hoisting tool for the axial flow compressor casing. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a lifting fixture for an axial compressor casing to solve the technical problem that the lifting fixture in the prior art is not universal.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A lifting tool for an axial compressor casing, comprising a lifting ring body, a lifting hook is arranged on the top of the lifting ring body, two sets of rotating joints are symmetrically arranged on the two side walls of the lifting ring body, each of the rotating joints is rotatably connected with a lifting structure, and a balancing structure is arranged between the two symmetrical lifting structures;

[0007] The hoisting structure comprises a locking member rotatably connected to the rotary joint, the end of the locking member is fixedly connected to a suspension arm, a telescopic assembly is rotatably connected to the suspension arm, and a hook is arranged at the end of the telescopic assembly.

[0008] The utility model also includes the following technical features:

[0009] The telescopic assembly includes a threaded sleeve, a gear mounting shell connected to the interior of the threaded sleeve is provided on the threaded sleeve, a driving gear threadedly engaged with the boom is provided in the gear mounting shell, a rotating shaft is fixedly provided in the driving gear, the end of the rotating shaft extends out of the outer wall of the gear mounting shell and is connected to a hand wheel; a limiting ring is provided on each boom, and the limiting ring is detachably connected to the upper end of the threaded sleeve.

[0010] The balancing structure comprises a connecting rod with one end hinged to each boom respectively, and a fixing rod is sleeved on the other ends of two opposite connecting rods, and the connecting rod is slidable in the fixing rod.

[0011] A hinge seat is arranged on each of the suspension arms, and the hinge seat connects the connecting rod and the corresponding suspension arm.

[0012] A sliding block is arranged at the end of each connecting rod, and a sliding groove corresponding to the sliding block is arranged in each fixing rod.

[0013] An external thread is formed on the upper end of the threaded sleeve, and the threaded sleeve is threadedly connected to the limiting ring.

[0014] The rotary joint is a three-phase rotating shaft with one end fixedly connected to the lifting ring body, and the other two ends of the three-phase rotating shaft are jointly sleeved with the locking member.

[0015] The locking member includes a connecting seat connected to the boom, two connecting blocks are arranged on both sides of the top of the connecting seat, and the middle parts of the two connecting blocks are respectively provided with rotating holes for arranging the other two ends of the three-phase rotating shaft, and the inner wall of the axial outer side of the rotating hole is provided with a locking groove, and the two ends of the three-phase rotating shaft are respectively connected to the corresponding locking grooves through locking nuts.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] (I) In the utility model, two sets of rotating joints and two sets of corresponding lifting structures are quickly connected, so that the installation and disassembly of the lifting arm and the lifting ring body are convenient. The two sets of lifting arms cooperate with the rotating joints to freely rotate horizontally, so as to adjust their directions. By adjusting the telescopic assembly, the total length of the lifting structure and the telescopic assembly can be accurately controlled, so as to adapt to the lifting of casings of different sizes, thereby solving the technical problem of low versatility of lifting tooling in the prior art.

[0018] (II) In the telescopic assembly of the utility model, two sets of hand wheels respectively drive two sets of driving gears to rotate, thereby driving the booms in the two sets of threaded sleeves to move, so as to realize precise control of the length of the booms. After the adjustment is completed, the two sets of limit rings are respectively connected to the two sets of threaded sleeves, so as to limit and fix the two sets of booms and the threaded sleeves, thereby realizing the adjustment of the length of the boom.

[0019] (III) The angles of the two sets of booms are adjusted, and the connecting rods in the fixed rods are driven to move through the articulated seats. The connecting rods drive the two sets of sliders to move in the fixed rods and limit them, thereby ensuring that the casing remains horizontal during the lifting process and preventing the instability of the tooling caused by the shift of the center of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a partial structural schematic diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the telescopic assembly structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the balancing component of the utility model.

[0024] The meanings of the various numbers in the figure are: lifting ring body 1, lifting hook 2, rotating joint 3, lifting structure 4, balancing structure 5, telescopic component 6, hook 7;

[0025] Locking member 401, suspension arm 402, limiting ring 403, hinge seat 404;

[0026] Connecting seat 40101, connecting block 40102, rotating hole 40103, locking groove 40104, locking nut 40105;

[0027] Threaded sleeve 601, gear mounting housing 602, driving gear 603, rotating shaft 604, hand wheel 605, external thread 606;

[0028] Connecting rod 501 , fixing rod 502 , and sliding block 503 .

[0029] The specific contents of the utility model are further explained in detail below in conjunction with the embodiments. DETAILED DESCRIPTION

[0030] It should be noted that, unless otherwise specified, all components in the present invention are components known in the art.

[0031] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0032] The utility model provides a lifting tool for an axial flow compressor casing, such as Figures 1 to 4 As shown, it comprises a lifting ring body 1, a lifting hook 2 is arranged on the top of the lifting ring body 1, two sets of rotating joints 3 are symmetrically arranged on the two side walls of the lifting ring body 1, each rotating joint 3 is rotatably connected to a lifting structure 4, and a balancing structure 5 is arranged between the two symmetrical lifting structures 4;

[0033] The lifting structure 4 includes a locking member 401 rotatably connected to the rotary joint 3 , the end of the locking member 401 is fixedly connected to a suspension arm 402 , the suspension arm 402 is rotatably connected to a telescopic assembly 6 , and a hook 7 is provided at the end of the telescopic assembly 6 .

[0034] In the above technical scheme, two sets of rotating joints 3 and two sets of corresponding lifting structures 4 are quickly connected, so as to facilitate the installation and disassembly of the lifting arm 401 and the lifting ring body 1. The two sets of lifting arms 401 cooperate with the rotating joints 3 to facilitate free rotation in the horizontal direction, so as to adjust their direction. By adjusting the telescopic assembly 6, the total length of the lifting structure 4 and the telescopic assembly 6 can be accurately controlled, so as to adapt to the lifting of casings of different sizes, thereby solving the technical problem of low versatility of lifting tooling in the prior art.

[0035] Specifically, the telescopic assembly 6 includes a threaded sleeve 601, on which is provided a gear mounting shell 602 which is connected to the interior thereof, in which is provided a driving gear 603 which is threadedly engaged with the boom 402, in which is provided a rotating shaft 604 which is fixedly provided, in which the driving gear 603, the end of which extends out of the outer wall of the gear mounting shell 602 and is connected to a handwheel 605; each boom 402 is provided with a limiting ring 403 which is detachably connected to the upper end of the threaded sleeve 601.

[0036] In the above technical solution, the two sets of hand wheels 605 respectively drive the two sets of driving gears 603 to rotate, thereby driving the boom 401 in the two sets of threaded sleeves 601 to move, so as to realize precise control of the length of the boom 401. After the adjustment is completed, the two sets of limiting rings 403 are respectively connected to the two sets of threaded sleeves 601, so as to limit and fix the two sets of booms 401 and the threaded sleeves 601, thereby realizing the adjustment of the length of the boom.

[0037] Specifically, the balancing structure 5 includes a connecting rod 501 with one end hinged to each boom 402 , and a fixing rod 502 is sleeved on the other ends of two opposite connecting rods 501 . The connecting rod 501 is slidable in the fixing rod 502 .

[0038] In the above technical solution, by adjusting the angles of the two sets of booms 401, the connecting rod 501 in the fixing rod 502 is driven to move, thereby ensuring that the casing remains horizontal during the lifting process and preventing the instability of the tooling caused by the center of gravity shift.

[0039] Specifically, each suspension arm 401 is provided with a hinge seat 404 , and the hinge seat 404 connects the connecting rod 501 and the corresponding suspension arm 401 .

[0040] Specifically, a slider 503 is disposed at the end of each connecting rod 501 , and a sliding groove corresponding to the slider 503 is disposed in each fixing rod 502 .

[0041] In the above technical solution, the connecting rod 501 drives the two sets of sliders to move in the fixed rod 502 to limit the position thereof, thereby ensuring that the casing remains horizontal during the lifting process and preventing the instability of the tooling caused by the center of gravity shift.

[0042] Specifically, an external thread 606 is formed at the upper end of the threaded sleeve 601 , and the threaded sleeve 601 is threadedly connected to the limiting ring 403 .

[0043] In the above technical solution, the positions of the adjusted threaded sleeve 601 and the suspension arm 401 are limited and fixed by the limiting ring 403 .

[0044] Specifically, the rotary joint 3 is a three-phase rotating shaft with one end fixedly connected to the lifting ring body 1, and the other two ends of the three-phase rotating shaft are jointly sleeved with locking members 401.

[0045] In the above technical solution, the three-phase rotating shaft can simultaneously realize the fixed connection with the lifting ring body 1 and the rotatable connection with the locking member 401, which is very practical and convenient.

[0046] Specifically, the locking member 401 includes a connecting seat 40101 connected to the boom 402, and two connecting blocks 40102 are arranged on both sides of the top of the connecting seat 40101. The middle of the two connecting blocks 40102 are respectively provided with rotating holes 40103 for setting the other two ends of the three-phase rotating shaft, and a locking groove 40104 is opened on the inner wall of the axial outer side of the rotating hole 40103, and the two ends of the three-phase rotating shaft are respectively connected to the corresponding locking grooves 40104 through locking nuts 40105.

Claims

1. A lifting fixture for an axial compressor casing, comprising a lifting ring body (1), characterized in that: A hook (2) is provided at the top of the lifting ring body (1), two sets of rotating joints (3) are symmetrically provided on the two side walls of the lifting ring body (1), each of the rotating joints (3) is rotatably connected to a lifting structure (4), and a balancing structure (5) is provided between the two symmetrical lifting structures (4); The lifting structure (4) comprises a locking member (401) rotatably connected to the rotating joint (3); the end of the locking member (401) is fixedly connected to a lifting arm (402); the lifting arm (402) is rotatably connected to a telescopic component (6); and the end of the telescopic component (6) is provided with a hook (7).

2. The lifting tool for the axial compressor casing according to claim 1, characterized in that: The telescopic assembly (6) comprises a threaded sleeve (601), on which a gear mounting shell (602) communicating with the interior thereof is disposed, inside of which a driving gear (603) threadedly meshed with the boom (402) is disposed, and inside of which a rotating shaft (604) is fixedly disposed, wherein the end of the rotating shaft (604) extends out of the outer wall of the gear mounting shell (602) and is connected to a hand wheel (605); and each boom (402) is sleeved with a limiting ring (403), wherein the limiting ring (403) is detachably connected to the upper end of the threaded sleeve (601).

3. The lifting tool for the axial flow compressor casing according to claim 1 or 2, characterized in that: The balancing structure (5) comprises a connecting rod (501) with one end hinged to each boom (402), and a fixing rod (502) is sleeved on the other ends of the two opposite connecting rods (501), and the connecting rod (501) is slidable inside the fixing rod (502).

4. The lifting tool for the axial compressor casing according to claim 3, characterized in that: A hinge seat (404) is provided on each of the suspension arms (402), and the hinge seat (404) connects the connecting rod (501) and the corresponding suspension arm (402).

5. The lifting tool for the axial compressor casing according to claim 3, characterized in that: A sliding block (503) is provided at the end of each connecting rod (501), and a sliding groove corresponding to the sliding block (503) is provided in each fixing rod (502).

6. The lifting tool for the axial flow compressor casing according to claim 2, characterized in that: An external thread (606) is formed at the upper end of the threaded sleeve (601), and the threaded sleeve (601) is threadedly connected to the limiting ring (403).

7. The lifting tool for the axial flow compressor casing according to claim 1 or 2, characterized in that: The rotary joint (3) is a three-phase rotating shaft with one end fixedly connected to the lifting ring body (1), and the other two ends of the three-phase rotating shaft are jointly sleeved with the locking member (401).

8. The lifting tool for the axial compressor casing according to claim 7, characterized in that: The locking member (401) includes a connecting seat (40101) connected to the boom (402), two connecting blocks (40102) are arranged on both sides of the top of the connecting seat (40101), and the middle parts of the two connecting blocks (40102) are respectively provided with rotating holes (40103) for arranging the other two ends of the three-phase rotating shaft, and the inner wall of the rotating hole (40103) on the axial outer side is provided with a locking groove (40104), and the two ends of the three-phase rotating shaft are respectively connected to the corresponding locking grooves (40104) through locking nuts (40105).

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