CN211310685U - Nuclear-grade distributed control system control cabinet replacing device - Google Patents
Nuclear-grade distributed control system control cabinet replacing device Download PDFInfo
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- CN211310685U CN211310685U CN201921992446.1U CN201921992446U CN211310685U CN 211310685 U CN211310685 U CN 211310685U CN 201921992446 U CN201921992446 U CN 201921992446U CN 211310685 U CN211310685 U CN 211310685U
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Abstract
The utility model belongs to the technical field of the preventative maintenance of nuclear level distributed control system, concretely relates to nuclear level distributed control system control machine case changes device. The universal wheel is connected with a support base, the support base is vertically welded with two support stand columns, the two support stand columns are connected with a worm gear assembly, the worm gear assembly adopts two groups of worm gear structures, and two groups of worm gears are connected with the steering gear through nuts and connecting rods; the tail ends of the two sets of worms are connected with a bearing plane through nuts, the double-worm gear driving hand wheel is connected with a steering gear, the first-stage guide rail comprises two guide rails which are arranged in parallel, the first-stage guide rail is fixed on the bearing plane, each guide rail of the first-stage guide rail is provided with two first-stage sliding blocks, the second-stage guide rail comprises two guide rails, each guide rail stretches across and is fixed on the two first-stage sliding blocks, and each guide rail of the second-stage guide rail is provided with two second-stage sliding blocks. The utility model discloses can be used to in constrictive rack, dismantle with the big and heavy control box of weight of installation volume.
Description
Technical Field
The utility model belongs to the technical field of the preventative maintenance of nuclear level distributed control system, concretely relates to nuclear level distributed control system control machine case changes device.
Background
A nuclear-level distributed control system (1E-level DCS system) is a neural center of a nuclear power plant, mainly realizes the logic of a reactor protection system, the control of a safety special system, radiation monitoring and linkage control, and the monitoring of important parameters after an accident, and is key equipment for maintaining the integrity of three barriers of nuclear safety.
Fuqing No. 1-4 unit, 1E level DCS system uses Tricon platform, design control box, is used for installing processor card, I/O card, communication card, power, etc., these function cards communicate with on-the-spot sensor/executor through the chassis backplate each other, chassis trouble will influence the function of all cards on this chassis, even lead to the loss of control system function, influence the scope is big, the consequence is serious, therefore the processing of chassis trouble must be fast to relieve the security threat to the unit.
The Tricon control cabinet has the three-dimensional size of about 480 × 425 × 578mm and the weight of about 24.5kg, is a 5-surface closed structure and is fixed with 4 upright posts in the cabinet through screws on the left side and the right side. During the integration and assembly of the cabinet, the cabinet is installed firstly, and the side plate of the cabinet is not installed and has no barrier, and force can be applied in multiple directions; after the control cabinet is integrated, besides the cabinet, a large number of other components and cables are installed in the inner space, the components are installed outside the cabinet, the cabinets are installed on the site and placed side by side, and only front and rear doors can be opened and displayed in the field of view of operators. At present, a case needs to be replaced on site, only one side of a front door of the cabinet is provided with an operation window, only one operator can operate the case, the case is difficult to lift and stabilize at a position point by hands, and the operator needs to vacate hands to screw screws to fix the case in the cabinet; the existing hoisting and carrying equipment can not be operated in a narrow cabinet.
Disclosure of Invention
An object of the utility model is to provide a nuclear level distributed control system control machine case changes device can be used to in constrictive rack, dismantles and installs bulky and the heavy control machine case of weight, prevents that personnel are injured in the operation process to and accurate electron device is impaired.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a replacement device for a nuclear-grade distributed control system control cabinet is characterized in that four universal wheels are connected with a support base, the support base is vertically welded with two support stand columns, the two support stand columns are connected with a worm gear assembly, the worm gear assembly adopts two groups of worm gear structures, and two groups of worm gears are connected with a steering gear through nuts and connecting rods; the tail ends of the two sets of worms are connected with a bearing plane through nuts, the double-worm gear driving hand wheel is connected with a steering gear, the first-stage guide rail comprises two guide rails which are arranged in parallel, the first-stage guide rail is fixed on the bearing plane, each guide rail of the first-stage guide rail is provided with two first-stage sliding blocks, the second-stage guide rail comprises two guide rails, each guide rail stretches across and is fixed on the two first-stage sliding blocks, and each guide rail of the second-stage guide rail is provided with two second-stage sliding blocks.
The universal wheel adopt 4 1.5 cun steamboats, the universal wheel passes through 4 bolts and nut with the support base and is connected.
The support base adopt 10 mm's steel sheet, wide 400mm, long 550mm, support base upper edge ground clearance no longer than 90mm, at length direction 400mm department, at width direction border position, the welding support post of vertical support base.
The support column adopts U type frame steel, height 1500mm, vertical part design has 2 installation interfaces, an interface is located 500mm height, another is located 800mm height.
The double-worm gear driving hand wheel is provided with a clutch locking device, and the hand wheel can be rotated only when a shaft of the hand wheel is pulled out.
The stroke of the worm and gear assembly is 450mm, the speed ratio is 1:6, the tooth pitch is 4mm, the worm and gear assembly has a self-locking characteristic, and can stay at any position of the stroke to keep stable.
The bearing plane is a 400x400 frame plane.
The control cabinet is placed on the second-stage slide block.
The utility model discloses the beneficial effect who gains does:
the utility model is designed in a targeted way aiming at the problem of replacing the chassis on site, and can carry precise and large-volume heavy objects in a narrow space and lift the objects to a designated position;
the utility model discloses positioning accuracy can reach 1mm, can effectively solve space, weight, the positioning accuracy problem that the installation of the nuclear-grade DCS system machine case of Tricon platform met.
The utility model discloses can bear the heavy equipment of 40kg, three-dimensional direction removes around possessing vertical, horizontal, level, has the displacement regulating power of two kinds of ranges, realizes moving the accurate and location mounted position of control box.
The device is simple to operate, does not need training in advance, and can be operated by reading a simple operation manual.
By using the device, the replacement efficiency of the case can be greatly improved, the construction period is shortened, and the risk in the treatment process is reduced.
Through the utility model discloses can be with control machine case lifting to suitable height, carry out quick-witted case address code to spare parts and set for (welding short-circuit line) operation, fastener key position setting, prefabricated cable key position setting in-process, can provide a comfortable work platform for operating personnel.
Drawings
FIG. 1 is a schematic diagram of a patented system;
FIG. 2 is a schematic view of a lifting mechanism of the patented system;
FIG. 3 is a schematic view of a support base of the patented system;
FIG. 4 is a schematic view of a bearing platform of the patented system;
in the figure: 1: a universal wheel; 2: a support base; 3: supporting the upright post; 4: a double worm gear drives a hand wheel; 5: a worm gear assembly; 6: a diverter; 7: a load bearing plane; 8: a first stage guide rail; 9: a first stage slide block; 10: a second stage guide rail; 11: and a second stage slide block.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-4, the utility model discloses a modular design and installation mainly divide into three: bearing and moving platform, elevating system, horizontal displacement guiding mechanism. The bearing and moving platform takes the flat car principle as a model, designs an inverted T-shaped basic supporting structure as a main moving platform, and the inverted T-shaped structure is in an asymmetric design to solve the gravity center problem of a balancing device; at the vertical direction of "falling T" word structure, designed 2 mounted positions, can the lifting height as required, adjustment elevating system subassembly mounting height to reach the optimal action interval, can design more exquisitely with the elevating system subassembly simultaneously.
Elevating system part utilizes the worm gear principle, converts rotary motion into plane linear motion, and the worm gear structure has great drive ratio, and bearing capacity is high, and the transmission is steady, and has auto-lock nature, through the rational selection of tooth ratio, can obtain higher displacement precision, consequently the utility model discloses with the worm gear subassembly, as the actuating mechanism on the vertical position, fix the worm wheel on moving platform's stand, the worm is the free end, at the tip of worm, connects a platform for place and connect horizontal displacement adjustment mechanism, realize lifting the control cabinet to appointed height in the vertical direction.
Horizontal displacement guiding mechanism adopts sliding block set spare, and the subassembly is placed on the platform that is connected with elevating system, keeps the level, adopts two sets of superimposed slide rails, and following two sets of sliding block set spare's guide rail is fixed on the plane, and the slider is fixed with the guide rail of second group subassembly, realizes at two ascending free displacement of XY quadrature axis, control box with the utility model discloses a slider contact.
The utility model discloses a bear and moving platform is foundation structure, its concrete implementation as follows:
the universal wheel 1 adopts 4 1.5 cun truckles, the universal wheel structure, and wheel and installing support overall height are about 70mm, and every universal wheel support is connected through 4 bolts and nut with supporting base 2.
The double-worm gear driving hand wheel 4 is connected with the steering gear 6 through a nut, and in order to prevent the hand wheel from being mistakenly moved in the operation process to cause the movement of the upgrading mechanism, the hand wheel is provided with a clutch locking device, and the hand wheel can be rotated only when a shaft of the hand wheel is pulled out.
The worm and gear assembly 5 adopts two groups of worm and gear structures, the stroke is 450mm, the speed ratio is 1:6, the tooth pitch is 4mm, the self-locking characteristic is realized, the worm and gear assembly can stay at any position of the stroke and keep stable, and the worm gears of the two pairs of worm and gear assemblies are connected with the steering gear 6 through nuts and connecting rods; the two pairs of worm ends are connected with the bearing plane 7 through nuts.
The steering gear 6 is connected to a double-worm gear driving hand wheel and a worm wheel through nuts, and the rotation motion of the hand wheel is transmitted to the worm wheel of the worm gear, so that the two worm wheels move in the same direction at the same time, and the worm ascends or descends at the same time.
The bearing plane 7 is a 400x400 frame plane, serves as a supporting surface of a slide rail, transfers the weight of an equipment object to a base, is connected to the tail end of a worm through a bolt, moves up and down along with the worm, and is kept at a fixed point.
The first stage rail 8 comprises two parallel mounted rails, each fixed to the load-bearing plane 7 using 2 screws.
The first stage slide blocks 9 move in parallel on the first stage guide rails 8, and each guide rail is provided with two slide blocks.
The second-stage guide rail 10 comprises two guide rails, spans over the two first-stage sliding blocks 9, is fixed on the first-stage sliding blocks 9 through screws, and moves along with the first-stage sliding blocks 9.
The second stage slide blocks 11 move on the second stage guide rails 10, each guide rail is provided with two slide blocks, and the cabinet equipment objects needing to be moved are placed on the second stage slide blocks.
When the device is used for installing the control cabinet, the control cabinet is firstly placed on the 4 second-stage sliding blocks, and the universal wheels on the base are driven to move in a factory by pushing and pulling the supporting upright columns; when the machine cabinet reaches the position to be installed, the hand wheel is rotated, the worm is moved up and down, the height of the bearing plane is adjusted, so that the supporting base is aligned to the notch at the lower part of the machine cabinet and pushed into the machine cabinet after the control machine cabinet reaches the approximate installation height, and the machine cabinet is sent into the machine cabinet together with the base; the hand wheel is rotated to finely adjust the height of the case again, the case is held by hands, and the case is moved in the left-right direction and the front-back direction on the slide rail, so that the mounting hole of the case is aligned with the fixing hole in the cabinet, the fixed bolt is screwed down, and the control case is mounted.
When the device is used for disassembling the control cabinet, the supporting base is aligned to the notch at the lower part of the cabinet and pushed into the cabinet, the hand wheel is rotated to move the worm up and down, the height of the bearing plane is adjusted, the second-stage sliding block on the bearing surface drags the control cabinet, the fixing bolt of the control cabinet is loosened to enable the second-stage sliding block to pass through the device support, the control cabinet is held, the supporting upright post is held by a hand, the device and the control cabinet are pulled out of the cabinet, and the disassembly of the control cabinet is completed.
The utility model discloses to the quick-witted case design of Tricon platform DCS control system, can be used to Fuqing 1 ~ 4 units, square jiashan nuclear power to and the 1E level DCS system maintenance of Hainan nuclear power, the user that the Tricon control machine case had been used to other trades can further be promoted to the also wide application in petrochemical industry of Tricon platform. And simultaneously, the utility model discloses a modular design and installation through replacing wherein certain subassembly, also can realize the application that the scope is wider, for example change horizontal displacement adjustment platform and be the support arm, can be used to narrow dish small-size hoist and mount work of in-platform server installation. The device moves and positions in the vertical direction through a worm gear and a worm, and moves and positions horizontally through the combination of a universal wheel and a sliding rail/sliding block in the horizontal direction.
Claims (8)
1. A nuclear level distributed control system control machine case replacement device which is characterized in that: the four universal wheels are connected with a support base, the support base is vertically welded with two support stand columns, the two support stand columns are connected with a worm gear assembly, the worm gear assembly adopts two groups of worm gear structures, and two groups of worm gears are connected with a steering gear through nuts and connecting rods; the tail ends of the two sets of worms are connected with a bearing plane through nuts, the double-worm gear driving hand wheel is connected with a steering gear, the first-stage guide rail comprises two guide rails which are arranged in parallel, the first-stage guide rail is fixed on the bearing plane, each guide rail of the first-stage guide rail is provided with two first-stage sliding blocks, the second-stage guide rail comprises two guide rails, each guide rail stretches across and is fixed on the two first-stage sliding blocks, and each guide rail of the second-stage guide rail is provided with two second-stage sliding blocks.
2. The apparatus of claim 1, wherein: the universal wheel adopt 4 1.5 cun steamboats, the universal wheel passes through 4 bolts and nut with the support base and is connected.
3. The apparatus of claim 1, wherein: the support base adopt 10 mm's steel sheet, wide 400mm, long 550mm, support base upper edge ground clearance no longer than 90mm, at length direction 400mm department, at width direction border position, the welding support post of vertical support base.
4. The apparatus of claim 1, wherein: the support column adopts U type frame steel, height 1500mm, vertical part design has 2 installation interfaces, an interface is located 500mm height, another is located 800mm height.
5. The apparatus of claim 1, wherein: the double-worm gear driving hand wheel is provided with a clutch locking device, and the hand wheel can be rotated only when a shaft of the hand wheel is pulled out.
6. The apparatus of claim 1, wherein: the stroke of the worm and gear assembly is 450mm, the speed ratio is 1:6, the tooth pitch is 4mm, the worm and gear assembly has a self-locking characteristic, and can stay at any position of the stroke to keep stable.
7. The apparatus of claim 1, wherein: the bearing plane is a 400x400 frame plane.
8. The apparatus of claim 1, wherein: the control cabinet is placed on the second-stage slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921992446.1U CN211310685U (en) | 2019-11-18 | 2019-11-18 | Nuclear-grade distributed control system control cabinet replacing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921992446.1U CN211310685U (en) | 2019-11-18 | 2019-11-18 | Nuclear-grade distributed control system control cabinet replacing device |
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| CN211310685U true CN211310685U (en) | 2020-08-21 |
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| CN201921992446.1U Active CN211310685U (en) | 2019-11-18 | 2019-11-18 | Nuclear-grade distributed control system control cabinet replacing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110885032A (en) * | 2019-11-18 | 2020-03-17 | 福建福清核电有限公司 | Nuclear-grade distributed control system control cabinet replacing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110885032A (en) * | 2019-11-18 | 2020-03-17 | 福建福清核电有限公司 | Nuclear-grade distributed control system control cabinet replacing device |
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