CN114986226A - Suspension type slewing mechanism and using method thereof - Google Patents
Suspension type slewing mechanism and using method thereof Download PDFInfo
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- CN114986226A CN114986226A CN202210652138.4A CN202210652138A CN114986226A CN 114986226 A CN114986226 A CN 114986226A CN 202210652138 A CN202210652138 A CN 202210652138A CN 114986226 A CN114986226 A CN 114986226A
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- rotating
- upper bracket
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/10—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting holders for tool or work
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
Abstract
The invention discloses a suspension type slewing mechanism and a using method thereof, which are used for slewing a heat exchanger; the heat exchanger comprises a cylinder, and a flange part and an upright rod which are respectively connected with two ends of the cylinder, wherein the flange part and the upright rod are oppositely arranged; the suspension type swing mechanism includes: an upper bracket; a rotating bracket, one end of which is rotatably connected with the upper bracket and the other end of which is fixedly connected with a flange part of the heat exchanger, and is used for suspending the heat exchanger on the upper bracket so as to rotate the heat exchanger; and one end of the lower support is connected with the upper support, and the other end of the lower support is arranged on a bearing surface and is used for supporting the upper support, the rotating support and the heat exchanger. The invention can lead the heat exchanger to be capable of keeping a vertical rotatable state for a long time in the assembling and manufacturing process, thereby solving the difficult problem in the process manufacturing of the nuclear grade heat exchanger.
Description
Technical Field
The invention relates to the technical field of nuclear power equipment, in particular to a suspension type slewing mechanism for preparing a heat exchanger and a using method thereof.
Background
The nuclear-grade heat exchanger is important equipment of a nuclear power plant, the whole weight is about 8-10T, and the height is about 10 m; meanwhile, during the process of manufacturing the heat exchanger, the heat exchanger is usually kept in a vertical rotary state. However, based on the large volume and tonnage of the heat exchanger and the condition that no intermediate rotating shaft exists, how to ensure that the whole heat exchanger is continuously in a vertical rotating state becomes a difficult problem in the manufacturing process of the process, and certain difficulty is brought to the design of the clamping and fixing structure of the whole container equipment.
Disclosure of Invention
The invention aims to provide a suspension type slewing mechanism and a using method thereof, wherein a heat exchanger can be suspended on an upper bracket through a rotating bracket and driven to rotate, and the upper bracket, the rotating bracket and the heat exchanger can be stably supported on a bearing surface through a lower bracket, so that the heat exchanger can be kept in a vertical and slewing state for a long time in the assembling and manufacturing process.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a suspension swing mechanism for swinging a heat exchanger; the heat exchanger comprises a cylinder, and a flange part and an upright rod which are respectively connected with two ends of the cylinder, wherein the flange part and the upright rod are oppositely arranged; the suspension type swing mechanism includes:
an upper bracket;
a rotating bracket, one end of which is rotatably connected with the upper bracket and the other end of which is fixedly connected with a flange part of the heat exchanger, and is used for suspending the heat exchanger on the upper bracket so as to rotate the heat exchanger;
and one end of the lower support is connected with the upper support, and the other end of the lower support is arranged on a bearing surface and is used for supporting the upper support, the rotating support and the heat exchanger.
Preferably, a plurality of first connecting hole groups are arranged at intervals in the circumferential direction of the flange part of the heat exchanger; each first connecting hole group includes a plurality of first connecting holes, just flange portion pass through first connecting hole with the runing rest carries out fixed connection.
Preferably, the rotating bracket includes:
rotating the bracket body;
the second connecting hole groups are arranged at intervals along the circumferential direction of the rotating bracket body; each second connecting hole group comprises a plurality of second connecting holes, and each second connecting hole is correspondingly aligned with the first connecting hole, so that a fastener correspondingly penetrates through the first connecting hole and the second connecting hole to fixedly connect the flange part of the heat exchanger with the rotating bracket body; and
the first end of the main shaft is fixedly connected with the rotating bracket body, and the second end of the main shaft is rotatably connected with the upper bracket and is used for suspending the rotating bracket body and the heat exchanger on the upper bracket and driving the heat exchanger to perform rotary motion; and the first end and the second end of the main shaft are oppositely arranged.
Preferably, the upper bracket includes:
the upper bracket main body is fixedly connected with one end of the lower bracket, which is far away from the bearing surface; a first through hole is formed in the upper support main body;
a first bearing which is a thrust bearing and is fixed in the first through hole; the second end of the main shaft penetrates through the first bearing and extends to the upper part of a shaft ring of the first bearing; and
the fixing piece is positioned above the first bearing and is fixedly connected with the second end of the main shaft; and the fixing piece is abutted against a shaft ring of the first bearing so as to enable the main shaft to be suspended on the upper support main body and to be rotatably connected with the upper support main body.
Preferably, the upper bracket further comprises: a second bearing which is a radial bearing and is fixed in the first through hole; and the second bearing is positioned between the first bearing and the rotating bracket main body and is used for radially limiting the main shaft.
Preferably, the lower bracket includes:
one end of each upright column is arranged on the bearing surface, and the other end of each upright column is fixedly connected with the upper support body and used for supporting the upper support, the rotary support and the heat exchanger; and
the bottom plate is fixedly connected with one end, close to the bearing surface, of the upright post; the bottom plate is provided with a second through hole, and the vertical rod of the heat exchanger penetrates through the second through hole so as to radially limit the heat exchanger.
Preferably, the main shaft is integrally provided with the rotating bracket body.
Preferably, the fixing member and the second end of the main shaft are connected by a screw thread; and the second end of the main shaft is provided with a limiting piece for preventing the fixing piece from falling off.
Preferably, the main shaft and the first bearing are in transition fit or clearance fit;
the main shaft and the second bearing, and the upright rod and the second through hole are in clearance fit.
In another aspect, the present invention further provides a method for using the suspension slewing mechanism, including:
rotatably connecting a main shaft of the rotating bracket with a first bearing of the upper bracket through a fixing piece;
fixedly connecting a flange part of a heat exchanger with a rotating bracket main body of the rotating bracket through corresponding first connecting holes and second connecting holes so as to enable the heat exchanger to be suspended on the upper bracket and rotate; and
and fixedly connecting the upper support main body of the upper support with the upright post of the lower support so that the lower support supports the upper support, the rotating support and the heat exchanger.
Compared with the prior art, the invention has at least one of the following advantages:
according to the suspension type slewing mechanism and the using method thereof, the nuclear-grade heat exchanger with the weight of 10T can be suspended on the upper bracket through the rotating bracket and drives the heat exchanger to rotate, and the upper bracket, the rotating bracket and the heat exchanger can be stably supported on the bearing surface through the lower bracket, so that the suspension type slewing mechanism has good suspension capacity and good slewing precision, and the manufacturing process requirements of the nuclear-grade heat exchanger can be further met.
The main shaft of the rotating bracket can penetrate through the first bearing of the upper bracket from bottom to top, and the fixing piece can be fixedly connected with the main shaft extending to the upper part of the shaft ring of the first bearing; because influenced by the action of gravity, the end face of the fixing piece close to the rotating support can be abutted against the shaft ring of the first bearing, so that the main shaft can be suspended on the first bearing through the fixing piece, and further the rotating support body connected with the main shaft and the heat exchanger connected with the rotating support body can be suspended on the upper support.
The first bearing adopts the thrust bearing, so that the first bearing not only has a rotation function, but also can bear axial load, thereby ensuring that the upper support has better axial suspension force and rotation precision, and further ensuring that the main shaft, the rotating support main body and the heat exchanger can be stably suspended on the upper support and can rotate.
The upper support body can be fixed on the lower support, so that the load of the heat exchanger weighing ten tons can be sequentially transmitted to the first bearing through the rotating support body, the main shaft and the fixing piece, then transmitted to the upper support body through the first bearing, and then transmitted to the lower support and the bearing surface through the upper support body, so that the upper support, the rotating support and the heat exchanger can be stably supported by the lower support, and the suspension type slewing mechanism can stably bear the heat exchanger and smoothly slew the heat exchanger.
According to the invention, the second bearing can radially limit the main shaft, and the second through hole can radially limit the vertical rod of the heat exchanger, so that the heat exchange container is prevented from greatly shaking while rotating, and the rotation stability of the suspension type rotation mechanism is further ensured.
According to the invention, the first bearing and the main shaft are in precise fit, the second bearing and the main shaft are in middle fit, and the second through hole and the vertical rod are in rough fit, so that the capacity of smooth and stable rotation of the suspension type slewing mechanism on a 10m long axis can be well maintained under the condition of bearing a large axial load.
The invention also has the characteristics of simple structure, reasonable layout and convenient preparation and use.
Drawings
FIG. 1 is a schematic diagram of a heat exchanger according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a flange portion of a heat exchanger according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a suspension slewing mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a suspended heat exchanger of a swing mechanism according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view illustrating an upper bracket of a swing mechanism according to an embodiment of the present invention;
fig. 6 is an enlarged schematic view of a in fig. 5.
Detailed Description
The suspension swing mechanism and the method for using the same according to the present invention will be described in detail with reference to the accompanying drawings and the following detailed description. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Referring to fig. 1 to 6, the present embodiment provides a suspension type swing mechanism for swinging a heat exchanger 10; the heat exchanger 10 includes a cylinder 110, and a flange 120 and an upright 130 respectively connected to two ends of the cylinder 110, wherein the flange 120 and the upright 130 are disposed opposite to each other; the suspension type swing mechanism includes: an upper bracket 210; a rotating bracket 220 having one end rotatably connected to the upper bracket 210 and the other end fixedly connected to the flange part 120 of the heat exchanger 10, for suspending the heat exchanger 10 from the upper bracket 210 to rotate the heat exchanger 10; and a lower supporter 230 having one end connected to the upper supporter 210 and the other end disposed on a carrying surface, for supporting the upper supporter 210, the rotating supporter 220 and the heat exchanger 10.
Referring to fig. 1 to 4, the flange portion 120 of the heat exchanger 10 is circumferentially provided with a plurality of first connection hole sets 1210 at intervals; each of the first connection hole sets 1210 includes a plurality of first connection holes, and the flange portion 120 is fixedly connected to the rotating bracket 220 through the first connection holes.
It will be appreciated that in some other embodiments, the rotating bracket 220 includes: a swivel mount body 2210; a plurality of second coupling hole groups provided at intervals in a circumferential direction of the rotating bracket body 2210; each of the second coupling hole groups includes a plurality of second coupling holes, and each of the second coupling holes is correspondingly aligned with the first coupling hole such that a fastener 2230 correspondingly penetrates through the first coupling hole and the second coupling hole to fixedly couple the flange portion 120 of the heat exchanger 10 with the rotating frame body 2210; and a main shaft 2220 having a first end fixedly connected to the rotating frame body 2210 and a second end rotatably connected to the upper frame 210, for suspending the rotating frame body 2210 and the heat exchanger 10 from the upper frame 210 and driving the heat exchanger 10 to perform a revolving motion; and the first end and the second end of the main shaft 2220 are oppositely arranged.
Specifically, in this embodiment, 8 first connection hole sets 1210 may be disposed on the flange portion 120 of the heat exchanger 10, and each first connection hole set 1210 may include 6 first connection holes; correspondingly, the rotating frame body 2210 is also provided with 8 second connecting hole sets, and each second connecting hole set also includes 6 second connecting holes; after aligning each of the first connection holes with the corresponding second connection hole, the fastening part 2230 (e.g., tie bar) can be used to fix the flange part 120 to the rotating bracket body 2210, and the first connection hole, the second connection hole and the fastening part 2230 serve as connection points for suspending the entire heat exchanger 10. Preferably, all the first connection hole groups 1210 may be equally spaced apart in the circumferential direction of the flange part 120, and all the second connection hole groups may be equally spaced apart in the circumferential direction of the rotary frame body 2210, so that the connection between the heat exchanger 10 and the rotary frame 220 is uniformly stressed, thereby securing the connection stability of the heat exchanger 10 and the rotary frame 220; in addition, the 6 first connection holes and the 6 second connection holes may be arranged in a matrix of 3 rows and 2 columns, but the invention is not limited thereto.
Specifically, in this embodiment, the number of the main shafts 2220 may be 1, and a first end of the main shaft 2220, that is, an end close to the bearing surface, may be disposed at the center of the rotating rack body 2210, so that a force is uniformly applied to a joint of the main shaft 2220 and the rotating rack body 2210, thereby ensuring the connection stability between the main shaft 2220 and the rotating rack body 2210, and further ensuring the connection stability between the rotating rack 220 and the heat exchanger 10; a second end of the main shaft 2220, i.e., an end away from the bearing surface, is rotatably connected to the upper bracket 210, so that when the main shaft 2220 rotates relative to the upper bracket 210, the main shaft 2220 can drive the rotating bracket body 2210 to rotate, and further drive the heat exchanger 10 connected to the rotating bracket body 2210 to rotate. Preferably, the main shaft 2220 is integrally provided with the rotating bracket body 2210, but the present invention is not limited thereto.
In other embodiments, the number of the main shafts 2220 may be more than one, and in this case, the main shafts 2220 may be uniformly distributed on the rotating frame body 2210 to increase the connection stability between the main shafts 2220 and the rotating frame body 2210, but the invention is not limited thereto.
Referring to fig. 3 to 6, the upper bracket 210 includes: the upper bracket main body 2110 is fixedly connected with one end, far away from the bearing surface, of the lower bracket 230; the upper bracket main body 2110 is provided with a first through hole; a first bearing 2120 which is a thrust bearing and is fixed in the first through hole; and the second end of the main shaft 2220 penetrates the first bearing 2120 and extends to the upper part of the collar of the first bearing 2120; the fixing piece 2130 is positioned above the first bearing 2120 and is fixedly connected with the second end of the main shaft 2220; the fastener 2130 abuts against the collar of the first bearing 2120, so that the spindle 2220 is suspended from the upper bracket body 2110 and is rotatably connected to the upper bracket body 2110.
It will be appreciated that in some other embodiments, the upper bracket 210 further comprises: a second bearing 2140 which is a radial bearing and fixed in the first through hole; and the second bearing 2140 is located between the first bearing 2120 and the rotational frame body 2210 for radially limiting the spindle 2220.
Specifically, the number of the first through holes in the upper frame body 2210 is the same as the number of the main shafts 2220 in the rotating frame 220, and the position of the first through holes corresponds to the position of the main shafts 2220, so that the second ends of the main shafts 2220 can sequentially penetrate through and be fixed to the second bearings 2140 and the first bearings 2120 corresponding to the first through holes from bottom to top and extend to the upper parts of the collars of the first bearings 2120. More specifically, after the fixing element 2130 is fixedly connected to the spindle 2220 extending above the race of the first bearing 2120, under the influence of gravity, the end surface of the fixing element 2130 near the rotary bracket 220 abuts against the race of the first bearing 2120, so that the spindle 2220 is suspended on the first bearing 2120 by the fixing element 2130, and the rotary bracket body 2210 connected to the spindle 2220 and the heat exchanger 10 connected to the rotary bracket body 2210 are suspended on the upper bracket 210, but the invention is not limited thereto.
In this embodiment, the fixing piece 2130 and the second end of the main shaft 2220 are connected by a screw thread; and a second end of the main shaft 2220 is provided with a limiting member for preventing the fixing member 2130 from falling off, so that the safety of the suspension type slewing mechanism is ensured. A spacer may be disposed between the fixing member 2130 and the collar of the first bearing 2120 to prevent the collar of the first bearing 2120 from being worn, thereby increasing the service life of the first bearing 2120.
Specifically, in this embodiment, the first bearing 2120 is a thrust bearing, so that the first bearing 2120 not only has a swiveling function, but also can bear an axial load, thereby ensuring that the upper bracket 210 has a good axial suspension force and swiveling precision, and further enabling the main shaft 2220, the rotating bracket body 2210 and the heat exchanger 10 to be stably suspended on the upper bracket 210 and to swivel. More specifically, the thrust bearing generally includes a race, a race located above the race, and rolling elements located between the race and the race, and the race of the first bearing 2120 may be fixed in the first through hole, so as to fix the first bearing 2120 to the upper bracket body 2210, but the invention is not limited thereto.
Specifically, in this embodiment, the second bearing 2140 is a radial bearing, so that the second bearing 2140 can bear a radial load, and thus the spindle 2220 is prevented from shaking greatly during the rotation process, and the stability of the entire suspension-type slewing mechanism is further maintained. More specifically, the radial bearing generally includes an outer ring, an inner ring, and rolling elements disposed between the outer ring and the inner ring, and the outer ring of the second bearing 2140 may be fixed in the first through hole, so as to fix the second bearing 2140 to the upper bracket body 2210, but the invention is not limited thereto.
In addition, in some embodiments, the first bearing 2120 may also be a radial thrust bearing, so that the first bearing 2120 can simultaneously bear axial load and radial load, and particularly, a self-aligning roller bearing of 29424 type in the national standard GB/T5859 may be used, but the invention is not limited thereto.
Referring to fig. 3 and 4, the lower bracket 230 includes: a plurality of studs 2310, one end of each stud 2310 is disposed on the bearing surface, and the other end of each stud 2310 is fixedly connected to the upper bracket body 2110 for supporting the upper bracket 210, the rotating bracket 220 and the heat exchanger 10; the bottom plate 2320 is fixedly connected with one end, close to the bearing surface, of the upright 2310; the bottom plate 2320 is provided with a second through hole 2330, and the upright rod 130 of the heat exchanger passes through the second through hole 2330 to radially limit the heat exchanger 10.
Specifically, the lower bracket 230 is used as a whole stressed support and is rested on the bearing surface; after the upper bracket 210 is integrally connected with the rotating bracket 220 and the heat exchanger 10, the upper bracket can be integrally hung and placed on the upright 2310 of the lower bracket 220, and the upper bracket body 2110 and each upright 230 can be kept in simple mechanical fixed connection; at this time, the entire structure is formed in a hanging rotatable manner, and a load of the heat exchanger 10 up to ten tons may be sequentially transmitted to the first bearing 2120 through the rotation bracket body 2210, the main shaft 2220 and the fixing member 2130, then transmitted to the upper bracket body 2110 through the first bearing 2120, and then transmitted to the pillar 2310 and the bearing surface through the upper bracket body 2110, so that the lower bracket 230 may stably support the upper bracket 210, the rotation bracket 220 and the heat exchanger 10, and thus the swing mechanism may stably bear the heat exchanger 10 and smoothly swing the heat exchanger 10. More specifically, when the heat exchanger 10 is suspended from the swing mechanism, the upright rod 130 of the heat exchanger 10 may pass through the second through hole 2330 and remain suspended (i.e., the upright rod 130 does not contact the carrying surface), so as to prevent the upright rod 230 from greatly shaking while ensuring that the heat exchange container rotates 10, thereby preventing the heat exchanger 10 from greatly shaking, and further maintaining the stability of the entire swing mechanism, but the invention is not limited thereto.
In this embodiment, the bearing surface is the ground; the number of the upright posts can be 4. The lower frame 230 further includes a plurality of cross bars 2340, each cross bar 2340 is used to connect any two of the posts 2310, so as to increase the stability of the lower frame 230.
Referring to fig. 4 to 6, the main shaft 2220 and the first bearing 2120 are in transition fit or clearance fit; the spindle 2220 and the second bearing 2140, and the vertical rod 130 and the second through hole 2330 are in clearance fit.
Specifically, in this embodiment, since the positions and functions of the first bearing 2120, the second bearing 2140 and the second through hole 2330 are different, the matching precision of the first bearing 2120, the second bearing 2140 and the second through hole 2330 has different requirements; the first bearing 2120 and the spindle 2220 are in precise fit (i.e., corresponding fit precision is selected according to national standards), the second bearing 2140 and the spindle 2220 are in medium fit (i.e., a gap of about ± 0.2mm is left between the inner ring of the second bearing 2140 and the spindle 2220), and the second through hole 2330 and the upright rod 130 are in rough fit (i.e., a gap of about ± 3mm is left between the second through hole and the upright rod). Through the structural forms of the precise matching, the medium matching and the rough matching, the ability of the suspension type slewing mechanism to smoothly and stably rotate on an axis with the length of 10m can be well maintained under the condition of bearing a large axial load, but the invention is not limited to this.
On the other hand, the present embodiment further provides a method for using the suspension slewing mechanism, including: step S1, rotationally connecting the main shaft 2220 of the rotating bracket 220 and the first bearing 2120 of the upper bracket 210 via the fixing element 2130; a step S2 of fixedly coupling the flange part 120 of the heat exchanger 10 and the rotating bracket main body 2210 of the rotating bracket 220 through the corresponding first coupling hole and second coupling hole so that the heat exchanger 10 is hung on the upper bracket 210 and swiveled; and step S3, fixedly connecting the upper bracket body 2110 of the upper bracket 210 with the upright 2310 of the lower bracket 230, so that the lower bracket 230 supports the upper bracket 210, the rotating bracket 220 and the heat exchanger 10.
Specifically, in this embodiment, in step S1, the rotating bracket 220 and the upper bracket 210 may be connected into a whole; in step S2, the heat exchanger 10 may be integrally connected to the rotating bracket 220. In step S3, the integrally connected upper bracket 210, the rotating bracket 220 and the heat exchanger 10 can be lifted and laid on the upright 2310 of the lower bracket 220, and the upper bracket body 2110 can be simply and mechanically fixed to each upright 230; meanwhile, the upright rod 130 at the lower end of the heat exchanger 10 may pass through the second through hole 2330 and remain in a suspended state, so as to prevent the heat exchange container 10 from shaking greatly while rotating, but the invention is not limited thereto.
In summary, the present embodiment provides a suspension-type slewing mechanism and a method for using the same, wherein one end of a rotating bracket is rotatably connected to an upper bracket, and the other end of the rotating bracket is fixedly connected to a flange of a heat exchanger, so that a nuclear-grade heat exchanger weighing up to 10T can be suspended on the upper bracket by the rotating bracket and drive the heat exchanger to slew; the lower support can stably support the upper support, the rotating support and the heat exchanger on the bearing surface, so that the suspension type slewing mechanism has good suspension capacity and good slewing precision, and the manufacturing process requirement of the nuclear-grade heat exchanger can be met. In the embodiment, the main shaft of the rotary bracket can penetrate through the first bearing of the upper bracket from bottom to top, and the fixing piece can be fixedly connected with the main shaft extending to the upper part of the shaft ring of the first bearing; because influenced by the action of gravity, the end face of the fixing piece close to the rotating support can be abutted against the shaft ring of the first bearing, so that the main shaft can be suspended on the first bearing through the fixing piece, and further the rotating support body connected with the main shaft and the heat exchanger connected with the rotating support body can be suspended on the upper support. In addition, thrust bearing is adopted by the first bearing, so that the first bearing not only has a rotary function, but also can bear axial load, the upper support is guaranteed to have better axial suspension force and rotary precision, and the main shaft, the rotary support main body and the heat exchanger can be stably suspended on the upper support and can rotate.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (10)
1. A swing in suspension type swing mechanism for swinging a heat exchanger (10); the heat exchanger (10) comprises a cylinder (110), and a flange part (120) and an upright rod (130) which are respectively connected with two ends of the cylinder (110), wherein the flange part (120) and the upright rod (130) are oppositely arranged; it is characterized in that the suspension type slewing mechanism comprises:
an upper bracket (210);
a rotating bracket (220) having one end rotatably connected to the upper bracket (210) and the other end fixedly connected to a flange portion (120) of the heat exchanger (10), for suspending the heat exchanger (10) from the upper bracket (210) to swing the heat exchanger (10);
and a lower bracket (230) having one end connected to the upper bracket (210) and the other end disposed on a bearing surface, for supporting the upper bracket (210), the rotating bracket (220) and the heat exchanger (10).
2. A swing mechanism as defined in claim 1,
a plurality of first connecting hole groups (1210) are arranged at intervals in the circumferential direction of the flange part (120) of the heat exchanger (10); each first connecting hole group (1210) comprises a plurality of first connecting holes, and the flange part (120) is fixedly connected with the rotary bracket (220) through the first connecting holes.
3. An overhead swing mechanism as defined in claim 2, wherein said swing bracket (220) comprises:
a swivel bracket body (2210);
a plurality of second connecting hole groups arranged at intervals in the circumferential direction of the rotating bracket body (2210); each second connecting hole group comprises a plurality of second connecting holes, and each second connecting hole is correspondingly aligned with the first connecting hole, so that a fastener (2230) correspondingly penetrates through the first connecting hole and the second connecting hole to fixedly connect the flange part (120) of the heat exchanger (10) with the rotating bracket body (2210); and
a main shaft (2220) having a first end fixedly connected to the rotating frame body (2210) and a second end rotatably connected to the upper frame (210), for suspending the rotating frame body (2210) and the heat exchanger (10) from the upper frame (210) and driving the heat exchanger (10) to perform a revolving motion; and the first end and the second end of the main shaft (2220) are oppositely arranged.
4. A swing mechanism as in claim 3, wherein said upper bracket (210) comprises:
the upper bracket main body (2110) is fixedly connected with one end, far away from the bearing surface, of the lower bracket (230); a first through hole is arranged on the upper bracket main body (2110);
a first bearing (2120) which is a thrust bearing and is fixed in the first through hole; and the second end of the main shaft (2220) penetrates through the first bearing (2120) and extends to the upper part of the shaft ring of the first bearing (2120); and
a fixing piece (2130) which is positioned above the first bearing (2120) and is fixedly connected with the second end of the main shaft (2220); and the fixing member (2130) abuts against the collar of the first bearing (2120) so that the main shaft (2220) is suspended from the upper bracket body (2110) and is rotatably connected to the upper bracket body (2110).
5. An overhead swing mechanism as in claim 4, wherein the upper bracket (210) further comprises: a second bearing (2140) which is a radial bearing and is fixed in the first through hole; and the second bearing (2140) is located between the first bearing (2120) and the rotational support body (2210) for radially limiting the spindle (2220).
6. An overhead swing mechanism as in claim 5, wherein the lower bracket (230) comprises:
a plurality of studs (2310), one end of each stud (2310) is arranged on the bearing surface, and the other end of each stud (2310) is fixedly connected with the upper bracket body (2110) and is used for supporting the upper bracket (210), the rotating bracket (220) and the heat exchanger (10); and
the bottom plate (2320) is fixedly connected with one end, close to the bearing surface, of the upright post (2310); the bottom plate (2320) is provided with a second through hole (2330), and the vertical rod (130) of the heat exchanger (10) penetrates through the second through hole (2330) to radially limit the heat exchanger (10).
7. A swing-in-suspension machine as in claim 3, characterized in that the spindle (2220) is integral with the rotating gantry body (2210).
8. A swing mechanism according to claim 4, wherein the fastener (2130) and the second end of the spindle (2220) are connected by a screw thread; and a limiting piece for preventing the fixing piece (2130) from falling off is arranged at the second end of the main shaft (2220).
9. A swing mechanism as defined in claim 6,
the main shaft (2220) and the first bearing (2120) are in transition fit or clearance fit;
the main shaft (2220) and the second bearing (2140) and the upright rod (130) and the second through hole (2330) are in clearance fit.
10. A method for using a swing mechanism as claimed in any one of claims 1 to 9, comprising:
rotatably connecting a main shaft of the rotating bracket with a first bearing of the upper bracket through a fixing piece;
fixedly connecting a flange part of a heat exchanger with a rotating bracket main body of the rotating bracket through corresponding first connecting holes and second connecting holes so that the heat exchanger is suspended on the upper bracket and rotates; and
fixedly connecting the upper support body of the upper support with the upright post of the lower support so that the lower support supports the upper support, the rotating support and the heat exchanger.
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| CN202210652138.4A CN114986226B (en) | 2022-06-09 | 2022-06-09 | Suspension type slewing mechanism and use method thereof |
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| CN202210652138.4A CN114986226B (en) | 2022-06-09 | 2022-06-09 | Suspension type slewing mechanism and use method thereof |
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| CN114986226B CN114986226B (en) | 2023-10-17 |
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| CN114986226B (en) | 2023-10-17 |
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