CN112309592A - Rod pulling machine - Google Patents
Rod pulling machine Download PDFInfo
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- CN112309592A CN112309592A CN202011219208.4A CN202011219208A CN112309592A CN 112309592 A CN112309592 A CN 112309592A CN 202011219208 A CN202011219208 A CN 202011219208A CN 112309592 A CN112309592 A CN 112309592A
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- rod
- slide carriage
- pull rod
- selecting
- mounting platform
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
- G21C3/334—Assembling, maintenance or repair of the bundles
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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
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention relates to the technical field of fuel preparation, in particular to a rod pulling machine. The method comprises the following steps: the device comprises a slide carriage mechanism, a pull rod mechanism and a mounting platform, wherein the pull rod mechanism is arranged between the slide carriage mechanism and the mounting platform and drives the pull rod mechanism to reciprocate on the mounting platform; the slide carriage mechanism comprises a force measuring unit and a tripping mechanism, and is clamped with the pull rod mechanism through the tripping mechanism when the rod drawing machine is at an initial position; the mounting platform is further provided with a leveling mechanism and a rod selecting mechanism which are arranged on one side of the slide carriage mechanism, the leveling mechanism, the rod selecting mechanism, the tripping mechanism and the force measuring unit are sequentially arranged along the advancing direction of the slide carriage mechanism, and the leveling mechanism is suitable for blocking the slide carriage mechanism from driving the pull rod mechanism to retreat. The slide carriage mechanism drives the pull rod to retreat to the initial position by arranging the leveling mechanism.
Description
Technical Field
The invention relates to the technical field of fuel preparation, in particular to a rod pulling machine.
Background
The nuclear fuel is an important clean energy source, the rod drawing process of the nuclear fuel rods generally draws the fuel rods with the length of about 4m into the lattice frame in the framework layer by layer until all the fuel rods are arranged in the lattice frame, and the equipment for realizing the rod drawing process is generally called a rod drawing machine.
The existing rod pulling machine generally comprises a mounting platform, and a pull rod, a slide carriage mechanism and a rod selecting mechanism which are arranged on the mounting platform, wherein when the rod pulling machine works, the rod selecting mechanism selects a first pull rod, and the slide carriage mechanism drives the first pull rod to reciprocate on the mounting platform. Specifically, the pull rod penetrates through a fuel assembly framework arranged on a fuel assembly platform under the pushing of the slide carriage mechanism, reaches the fuel rod preassembly platform to clamp the fuel rod, and then retracts under the action of the slide carriage mechanism to pull the fuel rod into the fuel assembly framework.
Disclosure of Invention
Therefore, the invention provides a rod drawing machine.
The technical scheme of the invention is as follows:
a rod drawing machine comprising: the device comprises a slide carriage mechanism, a pull rod mechanism and a mounting platform, wherein the pull rod mechanism is arranged between the slide carriage mechanism and the mounting platform and drives the pull rod mechanism to reciprocate on the mounting platform; the slide carriage mechanism comprises a force measuring unit and a tripping mechanism, and is clamped with the pull rod mechanism through the tripping mechanism when the rod drawing machine is at an initial position; the mounting platform is further provided with a leveling mechanism and a rod selecting mechanism which are arranged on one side of the slide carriage mechanism, the leveling mechanism, the rod selecting mechanism, the tripping mechanism and the force measuring unit are sequentially arranged along the advancing direction of the slide carriage mechanism, and the leveling mechanism is suitable for blocking the slide carriage mechanism from driving the pull rod mechanism to retreat.
Preferably, the leveling mechanism comprises a base and a first elastic piece arranged on the base, and when the slide carriage mechanism retreats, the slide carriage mechanism drives the pull rod mechanism to move through the force measuring unit, so that the pull rod mechanism is connected with the first elastic piece.
Preferably, the rod pulling machine further comprises a limiting piece arranged on the base, and when the slide carriage mechanism retreats, the pull rod mechanism is connected with the first elastic piece through the limiting piece.
Preferably, the limiting part is provided with a conical limiting surface, and the limiting surface is matched with a conical part arranged at the tail end of the pull rod mechanism.
Preferably, the stopper includes: the second abutting part is provided with a limiting surface; one end of the second guide part is connected with the second abutting part, and the other end of the second guide part is connected with the base in a sliding manner; the first elastic piece is sleeved on the second guide part, and two ends of the first elastic piece are connected with the second abutting part and the base respectively.
Preferably, the base is provided with a sliding groove, and the fastener is connected with the mounting platform through the sliding groove so as to mount the base on the mounting platform.
Preferably, the base is U-shaped, and the two sets of sliding grooves are arranged on two opposite sides of the base.
Preferably, the rod pulling machine further comprises a guide key arranged on the pull rod mechanism, when the slide carriage mechanism moves forwards, the tripping mechanism is connected with the pull rod mechanism through the guide key, when the slide carriage mechanism moves backwards, the tripping mechanism and the guide key deviate, the force measuring unit is connected with the guide key, and the slide carriage mechanism is suitable for extruding the force measuring unit onto the guide key.
Preferably, the rod pulling machine further comprises a first bracket, the force measuring unit is arranged on the first bracket, and the working end of the force measuring unit is arranged towards the guide key.
Preferably, the rod selecting mechanism comprises a rod selecting cylinder and a plurality of rod selecting members, the plurality of rod selecting members are in one-to-one correspondence with the plurality of pull rod mechanisms arranged on the mounting platform, and the rod selecting cylinder drives the rod selecting members to be connected with or separated from the pull rod mechanisms.
The technical scheme of the invention has the following advantages:
1. the rod pulling machine comprises a slide carriage mechanism, a pull rod mechanism and an installation platform, wherein the pull rod mechanism is arranged between the slide carriage mechanism and the installation platform, and the slide carriage mechanism drives the pull rod mechanism to reciprocate on the installation platform; the slide carriage mechanism comprises a force measuring unit and a tripping mechanism, and is clamped with the pull rod mechanism through the tripping mechanism when the rod drawing machine is at an initial position; the mounting platform is also provided with a leveling mechanism and a rod selecting mechanism which are arranged on one side of the slide carriage mechanism, the leveling mechanism, the rod selecting mechanism, the tripping mechanism and the force measuring unit are sequentially arranged along the advancing direction of the slide carriage, and the leveling mechanism is suitable for blocking the slide carriage mechanism from driving the pull rod to retreat.
When the device works, the rod selecting mechanism acts to select a plurality of pull rods (for convenience of expression, the pull rod selected by the rod selecting mechanism is marked as a first pull rod), the slide carriage mechanism moves forward towards the fuel rod prepackage box, the pull rod selected by the selected rod mechanism is separated from the tripping mechanism under the action of the slide carriage mechanism, the slide carriage mechanism drives the pull rods not selected by the selected rod mechanism to move forward (for convenience of expression, the pull rod not selected by the selected rod mechanism is marked as a second pull rod), and the fuel rods are grabbed;
after the fuel rod is grabbed, the slide carriage mechanism retreats away from the fuel rod pre-assembly box, the slide carriage mechanism drives the second pull rod to retreat through the force measuring unit, when the slide carriage mechanism retreats to the initial position, a tripping mechanism on the slide carriage mechanism is clamped with the first pull rod, and the second pull rod does not return to the initial position because the tripping mechanism and the force measuring unit are sequentially arranged along the advancing direction of the slide carriage mechanism;
in order to reset the first pull rod and the second pull rod to the initial positions, the rod selecting mechanism acts to disconnect the first pull rod, the slide carriage mechanism continues to retreat away from the fuel rod pre-assembly box, at the moment, the slide carriage mechanism drives the first pull rod to retreat through the tripping mechanism, the force measuring unit drives the second pull rod to retreat until the first pull rod and the second pull rod are sequentially connected with the leveling mechanism, the leveling mechanism stops the slide carriage mechanism from driving the pull rods to retreat, the first pull rod is disconnected with the tripping mechanism under the action of the leveling mechanism, the slide carriage mechanism is connected with the first pull rod and the second pull rod through the force measuring unit, and the tail ends of the first pull rod and the second pull rod are leveled;
at the moment, the slide carriage mechanism moves forward towards the fuel rod prepackage box again, the force measuring unit is separated from the pull rod mechanism, and the tripping mechanism is clamped with the first pull rod and the second pull rod.
2. According to the rod pulling machine, the leveling mechanism comprises the base and the first elastic piece arranged on the base, and when the slide carriage mechanism retreats, the slide carriage mechanism drives the pull rod to move through the force measuring unit, so that the pull rod mechanism is connected with the first elastic piece.
When the slide carriage mechanism drives the first pull rod and the second pull rod to retreat, the first pull rod and the second pull rod are sequentially connected with the first elastic piece and compress the first elastic piece, when the acting force exerted on the first pull rod by the first elastic piece reaches a certain value, the tripping mechanism is disconnected with the pull rod mechanism, the slide carriage mechanism is connected with the first pull rod and the second pull rod through the force measuring unit, and the tail ends of the first pull rod and the second pull rod are parallel and level;
the slide carriage mechanism advances towards the fuel rod prepacking box again, the force measuring unit is separated from the pull rod mechanism, the first elastic piece extends, after the acting force of the first pull rod and the second pull rod is reduced to a certain value, the slide carriage mechanism is clamped with the pull rod mechanism through the tripping mechanism, and the first elastic piece plays a role in buffering to prevent the pull rod from being damaged.
3. The rod pulling machine further comprises a limiting piece arranged on the base, when the slide carriage mechanism retreats, the pull rod mechanism is connected with the first elastic piece through the limiting piece, a conical limiting surface is arranged on the limiting piece, the limiting surface is matched with a conical part arranged at the tail end of the pull rod mechanism, and the pull rod can be accurately connected with the first elastic piece through the limiting piece.
4. The rod pulling machine is characterized in that the base is provided with the sliding grooves, the fastening piece is connected with the mounting platform through the sliding grooves so as to mount the base on the mounting platform, the base is U-shaped, and the two groups of sliding grooves are arranged on two opposite sides of the base. When the leveling mechanism is used, the installation position of the leveling mechanism can be adjusted according to actual use conditions through the fastening piece and the sliding groove.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the bar drawing machine of the present invention;
FIG. 2 is an enlarged partial top view of the rod drawing machine of the present invention;
FIG. 3 is a schematic structural view of the flush mechanism shown in FIGS. 1 and 2;
FIG. 4 is a schematic structural view of the carriage mechanism shown in FIGS. 1 and 2;
FIG. 5 is an enlarged view of a portion of FIG. 4 at P;
FIG. 6 is a schematic structural view of the first bracket shown in FIGS. 4 and 5;
fig. 7 is a schematic structural view of the lever selecting mechanism shown in fig. 1 and 2.
Description of reference numerals:
1-a slide carriage mechanism; 2-slide carriage; 3-a pull rod; 4-a guide key; 5-a force measuring unit; 6, pressing pieces; 7-a second elastic member; 8-mounting holes; 9-an adjusting part; 10-a first guide; 11-a first abutment; 13-a leveling mechanism; 14-a lever selection mechanism; 15-a first scaffold; 16-a first limit groove; 18-a platen; 19-a base; 20-a connector; 21-a locus of containment; 22-a notch; 23-a gasket; 24-a mounting platform; 25-a first drive member; 26-a second drive member; 27-a crank arm; 28-a first stop; 29-a second stop; 30-flagpole; 31-a first elastic member; 32-a limit piece; 33-a second abutment; 34-a second guide; 35-a chute; 36-selecting rod pieces; 37-a rod selecting cylinder; 38-second support.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
The present embodiment provides a rod drawing machine, as shown in fig. 1 to 7, including: the device comprises a slide carriage mechanism 1, a pull rod mechanism and a mounting platform 24, wherein the pull rod mechanism is arranged between the slide carriage mechanism 1 and the mounting platform 24, and the slide carriage mechanism 1 drives the pull rod mechanism to reciprocate on the mounting platform 24; the slide carriage mechanism 1 comprises a force measuring unit 5 and a tripping mechanism, and when the bar drawing machine is at an initial position, the slide carriage mechanism 1 is clamped with the pull rod mechanism through the tripping mechanism; the mounting platform 24 is further provided with a leveling mechanism 13 and a rod selecting mechanism 14 which are arranged on one side of the slide carriage mechanism 1, the leveling mechanism 13, the rod selecting mechanism 14, the tripping mechanism and the force measuring unit 5 are sequentially arranged along the advancing direction of the slide carriage mechanism 1, and the leveling mechanism 13 is suitable for preventing the slide carriage mechanism 1 from driving the pull rod 3 to retreat.
As shown in fig. 1 and 2, in operation, a plurality of pull rods 3 are selected for convenience in expression by the action of the rod selecting mechanism 14, the pull rod 3 selected by the rod selecting mechanism 14 is marked as a first pull rod, the slide carriage mechanism 1 advances towards the fuel rod prepackage box, the pull rod 3 selected by the selected rod mechanism 14 is separated from the tripping mechanism under the action of the slide carriage mechanism 1, the slide carriage mechanism 1 drives the pull rod 3 not selected by the selected rod mechanism 14 to advance for convenience in expression, the pull rod 3 not selected by the selected rod mechanism 14 is marked as a second pull rod, and the fuel rod is grabbed;
after a fuel rod is grabbed, the slide carriage mechanism 1 retreats away from the fuel rod pre-assembly box, the slide carriage mechanism 1 drives the second pull rod to retreat through the force measuring unit 5, when the slide carriage mechanism retreats to the initial position, a tripping mechanism on the slide carriage mechanism 1 is clamped with the first pull rod, and the second pull rod does not return to the initial position because the tripping mechanism and the force measuring unit 5 are sequentially arranged along the advancing direction of the slide carriage mechanism 1;
in order to reset the first pull rod and the second pull rod to the initial positions, the rod selecting mechanism 14 acts to disconnect the first pull rod, the slide carriage mechanism 1 continues to retreat away from the fuel rod preassembled box, at the moment, the slide carriage mechanism 1 drives the first pull rod to retreat through the tripping mechanism, the force measuring unit 5 drives the second pull rod to retreat until the first pull rod and the second pull rod are sequentially connected with the leveling mechanism 13, the leveling mechanism 13 prevents the slide carriage mechanism 1 from driving the pull rod 3 to retreat, the first pull rod is disconnected with the tripping mechanism under the action of the leveling mechanism 13, the slide carriage mechanism 1 is connected with the first pull rod and the second pull rod through the force measuring unit 5, and the tail ends of the first pull rod and the second pull rod are leveled;
at the moment, the slide carriage mechanism 1 moves forward towards the fuel rod prepacking box again, the force measuring unit 5 is separated from the pull rod mechanism, and the tripping mechanism is clamped with the first pull rod and the second pull rod.
As shown in fig. 3, the leveling mechanism 13 includes a base 19 and a first elastic member 31 disposed on the base 19, and when the carriage mechanism 1 retreats, the carriage mechanism 1 drives the pull rod 3 to move through the force measuring unit 5, so that the pull rod 3 is connected to the first elastic member 31.
When the slide carriage mechanism 1 drives the first pull rod and the second pull rod to retreat, the first pull rod and the second pull rod are sequentially connected with the first elastic piece 31 and compress the first elastic piece 31, when the acting force exerted on the first pull rod by the first elastic piece 31 reaches a certain value, the tripping mechanism is separated from the pull rod mechanism, the slide carriage mechanism 1 is connected with the first pull rod and the second pull rod through the force measuring unit 5, and the tail ends of the first pull rod and the second pull rod are parallel and level. The first elastic member 31 of the present embodiment is a spring.
When the slide carriage mechanism 1 advances towards the fuel rod prepacking box again, the force measuring unit 5 is separated from the pull rod mechanism, the first elastic piece 31 extends, the acting force of the first pull rod and the second pull rod is reduced to a certain value, the slide carriage mechanism 1 is clamped with the pull rod mechanism through the tripping mechanism, and the first elastic piece 31 plays a role in buffering to prevent the pull rod 3 from being damaged.
The rod-drawing machine further comprises a limiting piece 32 arranged on the base 19, and when the slide carriage mechanism 1 retreats, the pull rod mechanism is connected with the first elastic piece 31 through the limiting piece 32. The limiting part 32 is provided with a conical limiting surface, the limiting surface is matched with a conical part arranged at the tail end of the pull rod mechanism, and the pull rod 3 can be accurately connected with the first elastic part 31 by arranging the limiting part 32.
As a convertible embodiment, the limiting surface may be hemispherical or prismatic.
Specifically, the limiting member 32 includes: a second abutting portion 33 and a second guide portion 34, the second abutting portion 33 being provided with a stopper surface; one end of the second guide portion 34 is connected to the second contact portion 33, and the other end is slidably connected to the base 19; the first elastic element 31 is sleeved on the second guiding portion 34, and two ends of the first elastic element are respectively connected with the second abutting portion 33 and the base 19.
As an alternative embodiment, the second guide portion 34 may not be provided, the base 19 may be provided with a stopper hole, the first elastic member 31 may be provided in the stopper hole, and the second contact portion 33 may be slidably connected to the stopper hole and may be in contact with the first elastic member 31.
Wherein, be equipped with spout 35 on the base 19, the fastener passes through spout 35 and is connected with mounting platform 24 to install base 19 on mounting platform 24, base 19 is "U" style of calligraphy, and two sets of spouts 35 are located the relative both sides of base 19, and when using, through fastener and spout 35, can be according to the mounted position of actual use condition adjustment parallel and level mechanism 13.
The rod drawing machine further comprises a guide key 4 arranged on the pull rod mechanism, when the slide carriage mechanism 1 moves forwards, the tripping mechanism is connected with the pull rod mechanism through the guide key 4, when the slide carriage mechanism 1 moves backwards, the tripping mechanism and the guide key 4 deviate, the force measuring unit 5 is connected with the guide key 4, and the slide carriage mechanism 1 is suitable for extruding the force measuring unit 5 onto the guide key 4.
The rod drawing machine further comprises a first bracket 15, the force measuring unit 5 is arranged on the first bracket 15, and the working end of the force measuring unit is arranged towards the guide key 4.
Example two
The present embodiment provides a rod-pulling machine, and the slide carriage mechanism 1 is further defined on the basis of the first embodiment. The slide carriage mechanism 1 of the present embodiment is adapted to drive the pull rod mechanism to move, as shown in fig. 4-6, and includes: the device comprises a slide carriage 2, a force measuring unit 5 and a tripping mechanism, wherein the slide carriage 2 is arranged on a mounting platform 24; the force measuring unit 5 and the tripping mechanism are sequentially arranged on the slide carriage 2 along the advancing direction of the slide carriage mechanism 1, and when the slide carriage mechanism 1 is at an initial position, the slide carriage 2 is clamped with the pull rod mechanism through the tripping mechanism, so that the pull rod mechanism can be timely separated from the tripping mechanism when the advancing of the pull rod mechanism is blocked; when the slide carriage mechanism 1 retreats, the slide carriage 2 pushes the pull rod mechanism to retreat through the force measuring unit 5, and the force measuring unit 5 in the embodiment is a force measuring sensor.
As shown in fig. 1, 2 and 4, when in use, the slide carriage 2 drives the pull rod mechanism to advance through the tripping mechanism, the power source of the slide carriage 2 is not limited, and as a preferred embodiment, the slide carriage can realize linear motion by adopting a screw thread matching mode. When the pull rod mechanism encounters a jam in the advancing process, relative motion is generated between the pull rod mechanism and the slide carriage 2, the slide carriage 2 is separated from the pull rod mechanism, and the pull rod mechanism is effectively prevented from being damaged due to the jam or too large resistance.
After the pull rod mechanism grabs the fuel rod, the slide carriage 2 is abutted to the push rod mechanism through the force measuring unit 5 to retreat, the stress condition of the pull rod mechanism can be directly measured in the process of pulling the fuel rod through the force measuring unit 5, the measured numerical value is accurate, the stress condition of the fuel rod is obtained according to the stress condition of the pull rod 3, and when the pull rod mechanism and the fuel rod are blocked or are blocked too much in the retreating and retracting processes, the clamping can be timely and accurately detected and corresponding adjustment can be carried out.
Through setting up tripping device and dynamometry unit 5, guaranteed slide mechanism 1 in the security and the reliability of whole working process pull rod mechanism to and retreat the accurate detection of in-process to the pull rod power, thereby make this slide mechanism 1 operation reliable.
Pull rod mechanism includes pull rod 3 and direction key 4, is equipped with the spacing groove on the direction key 4, and tripping device includes: the pressing piece 6 and the second elastic piece 7, and one end of the pressing piece 6 is embedded into the limiting groove; one end of the second elastic part 7 is connected with the pressing part 6, the other end of the second elastic part is propped against the slide carriage 2, the second elastic part 7 is suitable for being separated from the limiting groove when the pull rod mechanism and the slide carriage 2 move relatively, and the second elastic part is a spring.
When the pull rod mechanism is blocked in the moving process, the pull rod 3 and the slide carriage 2 have the tendency of relative movement, the pressing piece 6 compresses the second elastic piece 7 at the moment and breaks away from the limiting groove, so that the slide carriage 2 and the pull rod mechanism break away from each other, and the pull rod 3 is effectively prevented from being blocked or damaged too much.
Furthermore, the slide carriage 2 is provided with a mounting hole 8, and one end of the second elastic element 7 is abutted against the inside of the mounting hole 8.
As shown in fig. 4, the slide carriage mechanism 1 further includes an adjusting member 9, the adjusting member 9 is provided with a first limiting portion, the first limiting portion is a first thread arranged on the inner wall of the mounting hole 8, and the second limiting portion is a second thread arranged on the outer wall of the adjusting member 9 and connected with the first thread; one end of the second elastic element 7 abuts against the adjusting element 9.
Adjust the compression volume of second elastic component 7 through rotating adjusting part 9, and then adjust the effort that compresses tightly between 6 and the spacing groove, the compression volume of second elastic component 7 is less, and pull rod 3 receives can break away from with carriage apron 2 after less resistance, when using, can adjust the compression volume of second elastic component 7 according to actual need, and realization mechanism can in time move when jam or resistance are too big.
In another embodiment of the first limiting part and the second limiting part, the first limiting part is a limiting hole arranged along the length direction of the adjusting part 9, the second limiting part is a clamping part arranged on the slide carriage 2, the adjusting part 9 is arranged, and the adjusting part 9 is slidably connected with the mounting hole 8.
As an alternative embodiment, the adjusting member 9 may not be provided, one end of the second elastic member 7 may be abutted against the inside of the mounting hole 8, and the second elastic member 7 may be selected as required before use, and the second elastic member 7 of this embodiment is a spring.
Specifically, the pressing member 6 includes: the adjusting piece 9 and the second elastic piece 7 are sleeved outside the first guide portion 10, the second elastic piece 7 is connected with the first abutting portion 11, and the first guide portion 10 and the first abutting portion 11 enable the section along the axial direction of the pressing piece 6 to be in a T shape.
One end of the pressing piece 6 corresponding to the limiting groove is provided with a first connecting surface which is arranged in an arc shape; the limiting groove is internally provided with a second connecting surface which is tangent to the first connecting surface, and the first connecting surface and the second connecting surface are arranged, so that the pull rod mechanism and the slide carriage 2 are smoother and more stable when in relative motion and have small noise.
Wherein the force-measuring cell 5 is arranged on the carriage 2, as an alternative embodiment, the force-measuring cell 5 can also be arranged on the guide key 4.
In order to increase the stability of the force cell 5 itself, the carriage mechanism 1 further comprises a first bracket 15, the force cell 5 being arranged on the first bracket 15 with its working end arranged towards the guide key 4.
One of the first bracket 15 and the slide carriage 2 is provided with a first limiting groove 16, the other one of the first bracket 15 and the slide carriage 2 is provided with a limiting block, and the limiting block is matched with the first limiting groove 16. As a preferred embodiment, the first limiting groove 16 is vertically disposed on the first bracket 15 along the length direction thereof and is disposed in an "i" shape, and this "i" shape structure can limit the first bracket 15 in the horizontal direction.
As one of the alternative embodiments, the first stopper groove 16 may be provided only on one side of the first bracket 15.
As a second alternative embodiment, the first limiting groove 16 may be formed on the first bracket 15 to be inclined in the longitudinal direction thereof.
As a third alternative embodiment, the first stopper groove 16 is provided in the slide carriage 2, and the stopper is provided in the first bracket 15.
The slide carriage mechanism 1 further comprises a pressing plate 18 arranged on the slide carriage 2, wherein the pressing plate 18 is arranged above the first support 15 and covers the first support 15 in a pressing mode, so that the first support 15 is abutted against the slide carriage 2. The pressing plate 18 is provided with a second limiting groove, and the top of the first bracket 15 extends into the second limiting groove.
When using, it is spacing to first support 15 through first spacing groove 16 and stopper earlier, then makes first support 15 and slide carriage 2 butt through clamp plate 18 again, and the benefit that sets up like this lies in: must set up many sets of corresponding dynamometer with 3 quantity of pull rods on the carriage apron 2, if adopt traditional screw spacing, then the installation is dismantled very inconveniently, and through setting up stopper, first spacing groove 16 and clamp plate 18, very convenient when the installation with dismantle first support 15, and efficient.
In an alternative embodiment, the pressing plate 18 is not provided, the first support 15 and the slide carriage 2 are connected only through the first limiting groove 16 and the limiting block, wherein the first limiting groove 16 is arranged below the first support 15, and the limiting block arranged on the slide carriage 2 is embedded into the first limiting groove 16, so that the first support 15 is installed on the slide carriage 2.
The first bracket 15 is provided with a connecting hole, one end of which extends into the position of the force measuring cell 5, and the connecting piece 20 is connected with the force measuring cell 5 through the connecting hole. The force-measuring cell 5 is mounted on the first bracket 15 via the attachment piece 20 and the attachment hole, thereby improving the stability of the attachment between the first bracket 15 and the force-measuring cell 5.
The first bracket 15 is provided with an accommodating part 21, the accommodating part 21 is provided with a notch 22, the force measuring unit 5 is arranged in the accommodating part 21, the working end of the force measuring unit 5 protrudes out of the notch 22, and in the process of reverse movement of the slide carriage 2, the working end of the force measuring unit 5 abuts against the guide key 4 and pushes the guide key 4 to move.
The slide carriage mechanism 1 further comprises a gasket 23 arranged between the accommodating part 21 and the connecting hole, and the connecting part 20 abuts against the gasket 23. In order to avoid direct contact damage dynamometry unit 5, simultaneously, connecting piece 20 is through extrudeing gasket 23, and gasket 23 further extrudeing dynamometry unit 5 for the work end of dynamometry unit 5 can be stably protruded in the outside of breach 22, and then can ensure the high-efficient stable contact between work end and slide carriage 2, and then can improve dynamometry unit 5's measurement of efficiency.
The tension rod 3 of the present embodiment includes: the pull claw is used for grabbing the fuel rod and is connected with the core rod; the pull rod 3 of the embodiment further comprises a pipe fitting, the core rod is arranged in the pipe fitting, one end of the pipe fitting abuts against the pull claw, and the pull claw is suitable for entering or being separated from one end of the pipe fitting; the guide key 4 passes through a slide hole arranged on the pipe fitting and is connected with the core rod.
As shown in fig. 4, the carriage 2 of this embodiment is further provided with a claw releasing mechanism, and the claw releasing mechanism includes: a first stopper 28 and a second stopper 29, the first stopper 28 being provided between the flag pole 30 and the guide key 4; the second stop 29 is connected to a flag pole 30 provided on the tube member of the pull rod mechanism.
The pine claw mechanism still includes: the first driving piece 25 and the second driving piece 26 are arranged on the slide carriage 2, the first driving piece 25 is connected with the first stopping piece 28 and drives the first stopping piece 28 to abut against or separate from the guide key 4, and the second driving piece 26 is connected with the second stopping piece 29 and drives the second stopping piece 29 to move away from the guide key 4. The first driving member 25 and the second driving member 26 are both air cylinders.
When the rod drawing machine of the embodiment is in an initial position, the rod selecting mechanism 14 of the rod drawing machine selects a plurality of rod pulling mechanisms, and the rest of the unselected rod pulling mechanisms penetrate through a fuel assembly framework arranged on a fuel assembly platform under the driving of the slide carriage mechanism 1 to reach the fuel rod pre-assembly platform, and at the moment, the claw releasing mechanism acts.
Specifically, when the pipe fitting is loosened, the first driving piece 25 pushes the crank arm 27 to enable the first limiting piece 28 to descend and block the guide key 4 from moving leftwards, the second driving piece 26 pushes the second limiting piece 29 to move leftwards so as to enable the flag pole 30 to move leftwards, the guide key 4 slides in a sliding hole in the pipe fitting, so that the pipe fitting and the pull claw can move axially relative to each other along the pull claw, the end part of the pull claw extends out of the pipe fitting, and the action of loosening the claw is realized;
when the pull claw is retracted, the first driving element 25 pushes the crank arm 27 to lift the second stopping element 29, the second driving element 26 pushes the second stopping element 29 to move rightward, the flag pole 30 pushes the pipe element to move rightward, and the pull claw is retracted into the pipe element.
EXAMPLE III
The present embodiment provides a rod pulling machine, and the rod selecting mechanism 14 is further defined on the basis of the first embodiment and the second embodiment.
As shown in fig. 7, the lever selecting mechanism 14 includes: the rod selecting mechanism 14 and a second bracket 38, the second bracket 38 is arranged on the mounting platform 24 and is positioned at one side of the slide carriage mechanism 1; the rod selecting mechanism 14 is disposed on the second support 38, and includes a rod selecting cylinder 37 and a plurality of rod selecting members 36, the plurality of rod selecting members 36 correspond to the plurality of rod mechanisms disposed on the mounting platform 24 one by one, and the rod selecting cylinder 37 drives the rod selecting members 36 to connect with or disconnect from the rod mechanisms.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (10)
1. A rod drawing machine, comprising:
the device comprises a slide carriage mechanism (1), a pull rod mechanism and a mounting platform (24), wherein the pull rod mechanism is arranged between the slide carriage mechanism (1) and the mounting platform (24), and the slide carriage mechanism (1) drives the pull rod mechanism to reciprocate on the mounting platform (24);
the slide carriage mechanism (1) comprises: the slide carriage mechanism (1) is clamped with the pull rod mechanism through the tripping mechanism when the rod drawing machine is at an initial position;
the mounting platform (24) is further provided with a parallel and level mechanism (13) and a rod selecting mechanism (14) which are arranged on one side of the slide carriage mechanism (1), the parallel and level mechanism (13) is arranged on the rod selecting mechanism (14), the tripping mechanism and the force measuring unit (5) are arranged along the advancing direction of the slide carriage mechanism (1) in sequence, and the parallel and level mechanism (13) is suitable for blocking the slide carriage mechanism (1) to drive the pull rod mechanism to retreat.
2. Rod pulling machine according to claim 1, characterized in that the leveling mechanism (13) comprises a base (19) and a first elastic member (31) arranged on the base (19), when the carriage mechanism (1) is retracted, the carriage mechanism (1) drives the pull rod mechanism to move through the force measuring unit (5), so that the pull rod mechanism is connected with the first elastic member (31).
3. The rod drawing machine according to claim 2, further comprising a limiting member (32) arranged on the base (19), wherein when the carriage mechanism (1) is retracted, the draw bar mechanism is connected with the first elastic member (31) through the limiting member (32).
4. A rod drawing machine according to claim 3, characterized in that the limiting member (32) is provided with a conical limiting surface, which is matched with a conical portion provided at the tail end of the rod drawing mechanism.
5. Rod pulling machine according to claim 4, characterized in that said limit stop (32) comprises:
a second abutting part (33) provided with the limiting surface;
a second guide part (34) having one end connected to the second contact part (33) and the other end slidably connected to the base (19); the first elastic piece (31) is sleeved on the second guide part (34), and two ends of the first elastic piece are respectively connected with the second abutting part (33) and the base (19).
6. A rod pulling machine according to any one of claims 2-5, wherein the base (19) is provided with a slide groove (35), and a fastening member is connected with the mounting platform (24) through the slide groove (35) to mount the base (19) on the mounting platform (24).
7. A rod pulling machine according to claim 6, characterized in that said base (19) is "U" -shaped, two sets of said runners (35) being provided on opposite sides of said base (19).
8. The rod drawing machine according to claim 1, further comprising a guide key (4) arranged on the pull rod mechanism, wherein when the slide carriage mechanism (1) advances, the tripping mechanism is connected with the pull rod mechanism through the guide key (4), when the slide carriage mechanism (1) retreats, the tripping mechanism is offset from the guide key (4), the force measuring unit (5) is connected with the guide key (4), and the slide carriage mechanism (1) is suitable for pressing the force measuring unit (5) on the guide key (4).
9. Rod pulling machine according to claim 8, further comprising a first bracket (15), wherein the load cell (5) is arranged on the first bracket (15) with its working end arranged towards the guide key (4).
10. The rod pulling machine according to claim 1, wherein the rod selecting mechanism comprises a rod selecting cylinder (37) and a plurality of rod selecting pieces (36), the plurality of rod selecting pieces (36) correspond to the plurality of rod selecting mechanisms arranged on the mounting platform (24) in a one-to-one mode, and the rod selecting cylinder (37) drives the rod selecting pieces (36) to be connected with or separated from the rod selecting mechanisms.
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| CN202011219208.4A CN112309592B (en) | 2020-11-04 | 2020-11-04 | Rod pulling machine |
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| CN202011219208.4A CN112309592B (en) | 2020-11-04 | 2020-11-04 | Rod pulling machine |
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| JPS61116692A (en) * | 1985-08-20 | 1986-06-04 | 三菱原子燃料株式会社 | Pull-in device for cylindrical body |
| JPH0247591A (en) * | 1988-08-10 | 1990-02-16 | Mitsubishi Nuclear Fuel Co Ltd | Fuel rod pulling-in force measuring device |
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