CN211464999U

CN211464999U - Auxiliary cutter body structure of shearing machine convenient for replacing auxiliary cutter

Info

Publication number: CN211464999U
Application number: CN201922220941.7U
Authority: CN
Inventors: 沈新宇
Original assignee: Wuxi Xitang Nuclear Equipment Co ltd
Current assignee: Wuxi Xitang Nuclear Equipment Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-09-11
Anticipated expiration: 2029-12-11

Abstract

The utility model belongs to the technical field of the technique of spent fuel shearing equipment and specifically relates to a cutter auxiliary cutter body structure convenient to change auxiliary cutter is related to, it includes auxiliary cutter seat and auxiliary cutter, the mounting groove has been seted up towards the lateral wall bottom of main cutter one side to auxiliary cutter seat, auxiliary cutter inlays in the mounting groove, still including setting up the last wedge on auxiliary cutter back of the body one side of main cutter, the width on going up the voussoir top is greater than the width of bottom, be equipped with down the voussoir in the mounting groove, the voussoir offsets one side of last wedge back of the body auxiliary cutter down, wears to be equipped with first bolt on the lower voussoir, vertical direction setting is followed to first bolt, the inner wall screw-thread fit of first bolt and mounting groove, and first bolt rotates with lower wedge to be connected, and the head of first bolt offsets with the lower surface of lower voussoir. The utility model discloses have the dismouting of being convenient for of vice sword, convenient and fast when changing vice sword, labour saving and time saving's effect.

Description

Auxiliary cutter body structure of shearing machine convenient for replacing auxiliary cutter

Technical Field

The utility model belongs to the technical field of the technique of spent fuel shearing equipment and specifically relates to a cutter auxiliary tool body structure convenient to change auxiliary tool is related to.

Background

Spent fuel, also known as irradiated nuclear fuel, is spent nuclear fuel that has been subjected to irradiation, typically produced by a nuclear reactor in a nuclear power plant. The fuel has relatively low uranium content, is insufficient for continuously maintaining nuclear reaction, belongs to nuclear waste, and still contains a large amount of radioactive elements and has radioactivity. If left untreated, can severely affect the environment and the health of people who come into contact with them.

When an operator carries out aftertreatment on the spent fuel, the spent fuel assembly needs to be cut into a short rod shape by using a cutting tool. Chinese patent No. CN202804332U discloses an improved structure of an auxiliary cutter body of a shearing machine, which comprises an auxiliary cutter holder, wherein a guide inclined plane of the auxiliary cutter holder is provided with a guide limit groove of a gripper semi-ring.

The structure improvement of the auxiliary cutter body of the shearing machine achieves the purpose of meeting the possible downward moving space of the single-hinge half ring and the double-hinge half ring which are arranged on the grabbing head connecting body in the final shearing stage through reasonable depth design of the limiting groove; through reasonable spacing groove width and the structural design of plane bottom, restricted the degree of opening of the single hinge semi-ring of installing on grabbing the head connector and the double hinge semi-ring, avoided it because of receiving the fault emergence of abnormal external force effect by the improper opening.

In the case of a shearing machine, the secondary cutter is often the portion of the whole secondary cutter body which is worn the fastest, and the dimensional accuracy of the secondary cutter is also directly related to the shearing quality, so that the secondary cutter needs to be replaced periodically. In the actual use process, however, the auxiliary knife is easy to deform after being pressed for many times. At this time, the shape of the auxiliary knife in the diastole state is changed, but the shape is limited by the auxiliary knife seat, the actual shape change is very small, and the auxiliary knife is in an elastic deformation state, which is reflected in that a huge positive pressure exists on a part of a contact surface of the auxiliary knife and the auxiliary knife seat, so that a huge maximum static friction force exists between the auxiliary knife and the auxiliary knife seat, the auxiliary knife is difficult to take off from the auxiliary knife seat, and the inconvenience, time and labor are brought to operators.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a cutter auxiliary blade body structure convenient to change auxiliary blade, it has auxiliary blade dismouting of being convenient for, convenient and fast when changing auxiliary blade, labour saving and time saving's effect.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a cutter auxiliary cutter body structure convenient to change auxiliary cutter, includes auxiliary cutter seat and auxiliary cutter, the mounting groove has been seted up towards the lateral wall bottom of main cutter one side to auxiliary cutter seat, auxiliary cutter inlays in the mounting groove, still including setting up the last wedge on auxiliary cutter one side of the main cutter dorsad, the width on going up the voussoir top is greater than the width of bottom, be equipped with down the voussoir in the mounting groove, the voussoir offsets with one side of last wedge one side of auxiliary cutter dorsad down, wears to be equipped with first bolt on the lower voussoir, first bolt sets up along vertical direction, the inner wall screw-thread fit of first bolt and mounting groove, and first bolt rotates with lower wedge to be connected, and the head of first bolt offsets with the lower surface of lower voussoir.

By adopting the technical scheme, the first bolt is rotated to enable the lower wedge block to move upwards and cling to one side of the upper wedge block, which is back to the auxiliary knife, so that the auxiliary knife is supported by the upper wedge block; the auxiliary knife is deformed in the using process, the middle part of the auxiliary knife bends towards the lower wedge block, the first bolt is rotated reversely, the lower wedge block moves downwards, enough space is reserved for the auxiliary knife and the upper wedge block, so that the deformation quantity of the auxiliary knife and the upper wedge block can be released, and after the wedge block is taken down, the auxiliary knife and the upper wedge block can be also taken down smoothly; the auxiliary knife is convenient to disassemble and assemble, convenient and fast to replace, time-saving and labor-saving.

The present invention may be further configured in a preferred embodiment as: and a second bolt penetrates through the lower wedge block in a sliding manner, is parallel to the first bolt, is positioned on one side of the first bolt, which is back to the auxiliary knife, and is rotatably connected with the lower wedge block, is in threaded fit with the inner wall of the mounting groove, is provided with a supporting block, and the supporting block is abutted to the end face of the top end of the lower wedge block.

By adopting the technical scheme, the supporting block is positioned on one side, back to the auxiliary cutter, of the first bolt and matched with the first bolt to form a lever structure, the second bolt is screwed, and the position of the supporting block is adjusted, so that the lower wedge block can be kept stable while the upper wedge block is compressed.

The present invention may be further configured in a preferred embodiment as: the bottom end face of the lower wedge block is flush with the bottom end face of the auxiliary tool apron, the first bolt is a countersunk head bolt, and the bottom end face of the second bolt is higher than the bottom end face of the lower wedge block.

Through adopting above-mentioned technical scheme, the bottom terminal surface of lower wedge flushes with the bottom terminal surface of vice blade holder, and when cutting the spent fuel subassembly, the short bar-shaped spent fuel subassembly that is downcut can not go into the mounting groove in, also can not take place the scraping with lower wedge, first bolt and second bolt also do not contact with spent fuel subassembly.

The present invention may be further configured in a preferred embodiment as: the roller pin I is rotatably erected on the end face of the top end of the upper wedge block, and the side wall of the roller pin I abuts against the top surface of the inner wall of the mounting groove.

By adopting the technical scheme, when the lower wedge block moves downwards, the upper wedge block still bears a certain pressure, and friction force exists between the upper wedge block and the top surface of the inner wall of the mounting groove.

The present invention may be further configured in a preferred embodiment as: and a second roller pin is rotatably erected on the end surface of the mounting groove, which is far away from the main cutter, and the side wall of the second roller pin is abutted against the side wall of the upper wedge block on the back side of the lower wedge block.

By adopting the technical scheme, the lower wedge block moves upwards, the upper wedge block is compressed and simultaneously can be subjected to the reaction force from the upper wedge block, the component force in the vertical direction is borne by the first bolt, the component force in the horizontal direction is borne by the end face, far away from the main knife, of the mounting groove, the second roller pin is arranged at the position, the friction force between the lower wedge block and the end face of the mounting groove can be reduced, the lower wedge block smoothly moves upwards under the driving of the first bolt, and the upper wedge block is compressed.

The present invention may be further configured in a preferred embodiment as: guide grooves are formed in two side walls of the mounting groove respectively and are arranged in the vertical direction, guide blocks are arranged on two end faces of the lower wedge block respectively, and the guide blocks are in sliding fit with the guide grooves.

Through adopting above-mentioned technical scheme, set up guide way and guide block, make lower wedge keep steady, can exert pressure to last wedge uniformly.

The present invention may be further configured in a preferred embodiment as: and the side wall rotating frame of the guide block is provided with a third roller pin, and the guide block is abutted against the inner wall of the guide groove through the third roller pin.

Through adopting above-mentioned technical scheme, set up the third friction that can reduce the guide block and receive when sliding in the guide way of kingpin, make lower voussoir shift up smoothly under the driving of first bolt, compress tightly last voussoir.

The present invention may be further configured in a preferred embodiment as: the side wall of one side, facing the lower wedge block, of the upper wedge block is provided with a limiting block, the axis of the limiting block is located in a vertical plane, and the side wall, facing one side of the upper wedge block, of the lower wedge block is correspondingly provided with a limiting groove.

Through adopting above-mentioned technical scheme, the stopper on the last voussoir imbeds the spacing inslot on the voussoir down, can evenly exert oneself between last voussoir and the lower voussoir, can not take place the dislocation.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the auxiliary knife is convenient to disassemble and assemble, convenient and quick to replace, time-saving and labor-saving;

2. through setting up second bolt and supporting shoe, the supporting shoe forms lever structure with first bolt cooperation, can make lower voussoir keep steadily when compressing tightly last voussoir.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a sectional view of the mounting groove in the embodiment;

FIG. 3 is a sectional view of a guide groove in the embodiment.

In the figure, 1, an auxiliary tool holder; 2. a secondary knife; 3. mounting grooves; 4. an upper wedge block; 5. a lower wedge block; 6. a first bolt; 7. a second bolt; 8. a main knife; 11. a notch; 31. a second roller pin; 32. a guide groove; 41. a first roller pin; 42. a limiting block; 51. a guide block; 52. a third roller pin; 53. a limiting groove; 61. and (7) a supporting block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 1 and 2, for the utility model discloses a cutter auxiliary cutter body structure convenient to change auxiliary cutter, including auxiliary cutter seat 1, auxiliary cutter seat 1 is equipped with the breach 11 of U type towards 8 one end of main sword. Two side faces of the notch 11 are opposite, the other side face is opposite to the main cutter 8, a guide inclined plane is arranged at the edge of the top end of the notch 11, and the auxiliary cutter 2 is embedded at the bottom end of the notch.

Referring to fig. 1 and 2, a mounting groove 3 is formed in the lower surface of the auxiliary tool apron 1, the mounting groove 3 is arranged along the shearing direction of the main tool 8, one end of the mounting groove 3 is closed, the other end of the mounting groove is communicated with the notch 11, the width of the mounting groove 3 is larger than the width of the side face, opposite to the main tool 8, of the notch 11, and the auxiliary tool 2 is embedded in one end, facing the main tool 8, of the mounting groove 3.

Referring to fig. 1 and 2, an upper wedge block 4 is welded on one side of the auxiliary knife 2, which is back to the main knife 8, the upper wedge block 4 is arranged along the width direction of the mounting groove 3, and the cross section of the upper wedge block is in a right trapezoid shape. The vertical surface of the upper wedge block 4 is connected with the auxiliary knife 2, and the tip end of the upper wedge block faces downwards and is flush with the bottom end of the auxiliary knife 2.

Referring to fig. 1 and 2, a lower wedge 5 is arranged in the mounting groove 3, and the lower wedge 5 is located on the side of the upper wedge 4 facing away from the auxiliary knife 2. Lower wedge 5 also sets up along the width direction of mounting groove 3, and the cross section is right trapezoid, and the pointed end is up. The vertical surface of the lower wedge block 5 is opposite to the closed end of the mounting groove 3, the side surface of the lower wedge block facing one side of the auxiliary knife 2 is attached to the upper wedge block 4, and the bottom end of the lower wedge block is flush with the bottom end of the upper wedge block 4.

Referring to fig. 1 and 2, three first bolts 6 and three second bolts 7 penetrate through the lower wedge 5, the first bolts 6 are located between the second bolts 7 and the upper wedge 4, and the first bolts 6 and the second bolts 7 are arranged in the vertical direction and arranged in the width direction of the mounting groove 3.

Referring to fig. 2, the first bolt 6 is rotatably engaged with the lower wedge 5, and its head is located at the bottom end and is sunk upward into the lower surface of the lower wedge 5, and is a countersunk bolt. The top end of the first bolt 6 penetrates out of the lower wedge block 5 upwards, penetrates into the top surface of the inner wall of the mounting groove 3 and is in threaded fit with the auxiliary tool apron 1.

Referring to fig. 2, the second bolt 7 is rotatably engaged with the lower wedge 5 and is slidably disposed on the lower wedge 5 in the vertical direction, the end surface of the bottom end of the second bolt is higher than the lower surface of the lower wedge 5, and the top end of the second bolt also penetrates the top surface of the inner wall of the mounting groove 3 and is in threaded engagement with the auxiliary tool holder 1. In addition, the second bolt 7 is sleeved with an annular supporting block 61 in the middle. The supporting block 61 is welded and fixed with the second bolt 7, is positioned above the lower wedge block 5 and is abutted against the top end face of the lower wedge block 5.

The supporting block 61 supports the lower wedge block 5, the first bolt 6 is screwed to enable the lower wedge block 5 to move upwards, the head of the first bolt 6 jacks the lower wedge block 5 upwards, the lower wedge block 5 is driven to be tightly pressed on the upper wedge block 4, and then the auxiliary knife 2 is tightly attached to the semi-closed end of the mounting groove 3.

Referring to fig. 2, the upper wedge 4 is rotatably supported on the end surface at the top end thereof by three roller pins 41, each of the roller pins 41 is disposed along the width direction of the mounting groove 3, and two roller pins 41 are arranged along the axial direction of the mounting groove 3.

Referring to fig. 1, a limiting groove 53 is formed in a side wall of the lower wedge 5 facing the upper wedge 4, and an axis of the limiting groove 53 is located in a vertical plane. Correspondingly, a limiting block 42 is integrally formed on the side wall of the upper wedge block 4 facing the lower wedge block 5, and the limiting block 42 is embedded in the limiting groove 53 and is in sliding fit with the limiting groove 53. The upper wedge 4 and the lower wedge 5 cannot be displaced in the width direction of the mounting groove 3 by the restriction of the stopper 42 and the stopper groove 53.

Referring to fig. 1 and 3, guide grooves 32 are formed in both side walls of the mounting groove 3, and the guide grooves 32 are arranged in a vertical direction. Accordingly, the guide blocks 51 are integrally formed on both front and rear end surfaces of the lower wedge 5, and the guide blocks 51 are fitted into the guide grooves 32.

Referring to fig. 3, the guide block 51 is rotatably supported by three pairs of needle rollers three 52, the needle rollers three 52 are disposed along the width direction of the mounting groove 3, and the three pairs of needle rollers three 52 are vertically aligned. The guide block 51 is slidably fitted to the guide groove 32 by abutting against both side walls of the guide groove 32 via the needle roller three 52.

Referring to fig. 2, the blind-end rotating frame of the mounting groove 3 is provided with two roller pins 31, the two roller pins 31 are arranged along the width direction of the mounting groove 3, and the two roller pins 31 are arranged along the vertical direction. The side of the lower wedge 5, which is back to the upper wedge 4, is abutted against the side wall of the second needle roller 31, and the friction force received when the lower wedge moves up and down in the mounting groove 3 is small.

The implementation principle of the embodiment is as follows:

after the auxiliary knife 2 and the upper wedge block 4 are embedded into the mounting groove 3, a second bolt 7 is placed, then the lower wedge block 5 is buckled, and finally a first bolt 6 is penetrated. The position of the supporting block 61 is adjusted, the first bolt 6 is rotated simultaneously, the lower wedge block 5 is jacked upwards, the upper wedge block 4 is extruded, the auxiliary cutter 2 is tightly attached to the semi-closed end of the mounting groove 3, and then the auxiliary cutter 2 can be mounted.

When the counter knife 2 is replaced, the first bolt 6 is unscrewed and the lower wedge 5 is removed, leaving enough space for the counter knife 2 and the upper wedge 4 to release the amount of deformation. At the moment, the auxiliary knife 2 and the upper wedge block 4 can be smoothly taken down, so that the auxiliary knife is convenient and rapid, and time and labor are saved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a cutter auxiliary cutter body structure convenient to change auxiliary cutter, includes auxiliary blade holder (1) and auxiliary cutter (2), mounting groove (3) have been seted up towards the lateral wall bottom of main sword (8) one side to auxiliary blade holder (1), inlay in mounting groove (3) auxiliary cutter (2), its characterized in that: still including setting up last voussoir (4) in vice sword (2) one side of the back to main sword (8), the width on going up voussoir (4) top is greater than the width of bottom, be equipped with down voussoir (5) in mounting groove (3), lower voussoir (5) offsets with the one side of last voussoir (4) vice sword (2) back to, wears to be equipped with first bolt (6) down on voussoir (5), first bolt (6) set up along vertical direction, and first bolt (6) and the inner wall screw-thread fit of mounting groove (3), first bolt (6) rotate with lower voussoir (5) and are connected, and the head of first bolt (6) offsets with the lower surface of lower voussoir (5).

2. A shear secondary blade structure for facilitating replacement of a secondary blade according to claim 1, wherein: lower voussoir (5) go up the slip and wear to be equipped with second bolt (7), second bolt (7) are parallel with first bolt (6), and second bolt (7) are located one side of first bolt (6) dorsad auxiliary knife (2), and second bolt (7) rotate with lower voussoir (5) and are connected, and second bolt (7) and the inner wall screw-thread fit of mounting groove (3) are equipped with supporting shoe (61) on second bolt (7), supporting shoe (61) offset with the top end face of lower voussoir (5).

3. A shear secondary blade structure for facilitating replacement of a secondary blade according to claim 2, wherein: the bottom end face of the lower wedge block (5) is flush with the bottom end face of the auxiliary tool apron (1), the first bolt (6) is a countersunk head bolt, and the bottom end face of the second bolt (7) is higher than the bottom end face of the lower wedge block (5).

4. A shear secondary blade structure for facilitating replacement of a secondary blade according to claim 1, wherein: the top end face of the upper wedge block (4) is provided with a roller pin I (41) in a rotating frame mode, and the side wall of the roller pin I (41) abuts against the top surface of the inner wall of the mounting groove (3).

5. A shear secondary blade structure for facilitating replacement of a secondary blade according to claim 1, wherein: and a second roller pin (31) is rotatably erected on the end face, far away from the main knife (8), of the mounting groove (3), and the side wall of the second roller pin (31) is abutted against the side wall, back to the upper wedge block (4), of the lower wedge block (5).

6. A shear secondary blade structure for facilitating replacement of a secondary blade according to claim 1, wherein: guide grooves (32) are formed in two side walls of the mounting groove (3) respectively, the guide grooves (32) are arranged in the vertical direction, guide blocks (51) are arranged on two end faces of the lower wedge block (5) respectively, and the guide blocks (51) are in sliding fit with the guide grooves (32).

7. A shear secondary blade structure for facilitating replacement of a secondary blade according to claim 6, wherein: the side wall rotating frame of the guide block (51) is provided with a roller pin III (52), and the guide block (51) is abutted against the inner wall of the guide groove (32) through the roller pin III (52).

8. A shear secondary blade structure for facilitating replacement of a secondary blade according to claim 1, wherein: the side wall of one side, facing the lower wedge block (5), of the upper wedge block (4) is provided with a limiting block (42), the axis of the limiting block (42) is located in a vertical plane, and a limiting groove (53) is correspondingly formed in the side wall of one side, facing the upper wedge block (4), of the lower wedge block (5).