CN216421261U

CN216421261U - Flying shear cutting edge locking device

Info

Publication number: CN216421261U
Application number: CN202122989174.3U
Authority: CN
Inventors: 赵恒亮; 马江涛; 武文平; 李明鹏; 马婷; 潘国辉; 郭照沛
Original assignee: Dalian Huarui Heavy Industry Group Co Ltd
Current assignee: Dalian Huarui Heavy Industry Group Co Ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-05-03
Anticipated expiration: 2031-12-01

Abstract

The utility model provides a flying shear cutting edge locking device mainly includes: the device comprises a knife box mechanism, a protective device, a tapered wedge pressing device and a pressing plate device; the knife box of the knife box mechanism adopts a dovetail structure, so that the knife box is convenient to assemble and disassemble; the shear blade and the knife box are connected and fastened by adopting a prestressed bolt; the cutting arms of the knife box mechanism are locked and positioned by adopting a tapered wedge pressing device; the wedge block and the knife box adopt a wedge-shaped inclined structure; the wedge pressing device realizes the locking and positioning of the tool box mechanism in the dovetail groove; the positioning block designed by the pressure plate device realizes the automatic positioning of the knife box mechanism along the direction of the upper shear axis (or the lower shear axis). The pressure plate device realizes the centering adjustment function of the knife box mechanism along the shearing center line.

Description

Flying shear cutting edge locking device

Technical Field

The utility model relates to a crank link gate-type flying shear technical field particularly, especially relates to flying shear cutting edge locking device.

Background

With the improvement of the productivity of rolling production lines of bars, section steels and the like in large steel mills at home and abroad, higher requirements are put forward on the rolling process, and correspondingly, great challenges are brought to the shearing capacity of flying shear equipment. In order to meet the shearing process requirements of large-specification flying shears, the flying shear blade is usually a formed cutting blade, and the locking device of the flying shear blade is high in structural design requirement, high in reliability, convenient to disassemble and assemble, high in positioning accuracy and the like. The locking device of the traditional flying shear depends on the connecting bolt group to be fixed on the shear seat, and the following problems exist in the adjustment and working process of the shear blade:

1. the flying shear has compact equipment structure, narrow manual operation space, high shearing blade adjustment difficulty and large potential safety hazard;

2. the shear blade locking device has a large number of bolts, and the adjustment and maintenance time is long, so that the rhythm of the rolling process and the production line capacity are influenced;

3. the working environment is severe, the temperature of a rolled piece to be sheared is higher than 950 ℃, the iron scale splashes seriously, and the shearing edge is easy to be corroded, deformed and damaged and difficult to disassemble.

4. The shearing blade is greatly influenced by human factors when being replaced on line, the condition that multiple groups of bolts are fastened unevenly is generated, the requirement of bolt pre-tightening torque is difficult to achieve, and potential safety hazards exist when equipment works.

Disclosure of Invention

According to the technical problems provided by the invention, the high-efficiency, quick, safe and reliable flying shear cutting edge locking device is provided.

The utility model discloses a technical means as follows:

a flying shear cutting edge locking device comprising: the device comprises an upper shear arm, a lower shear arm, a connecting rod, a box body, a pin shaft I, a pin shaft II, an upper shear shaft, a lower shear shaft, a knife box mechanism, a protection device, a wedge pressing device and a pressing plate device;

the cutter box mechanism consists of a shear blade, a cutter box, a gasket I, a nut I, a prestressed bolt, a nut II and a wedge block groove. The shear blade is arranged in a clamping groove of the cutter box and is connected and fastened through a prestressed bolt, a washer I, a nut I and a nut II. When the connection is fastened, a special tool is adopted to apply a certain pretightening force to the prestressed bolt, so that the reliability of the connection fastening is ensured.

The protection device consists of a protection plate, a gasket II, a bolt I and a protruding part. The guard plate is fastened on last shear arm and lower shear arm respectively by packing ring II and bolt I, and the bellying stretches into in the voussoir recess of sword box tip, forms mechanical labyrinth structure, can prevent effectively that impurity such as iron oxide scale, dust particle from falling into the slide wedge faying face of slide wedge closing device and sword box.

The wedge pressing device comprises a wedge block, a pressing plate I, a stud I, a nut III, a nut IV, a gasket III, a spring pin and a cylindrical nut I. The inclined wedge block is arranged in a wedge block groove formed by the upper shearing arm (or the lower shearing arm) and the cutter box and is tightly fixed by the pressing plate I through the stud I, the nut III, the nut IV and the washer III. The cylindrical nut I is arranged in a threaded hole of an upper shearing arm (or a lower shearing arm) of the stud I and is used for being connected with a fastening stud I. The spring pin I penetrates through the pressing plate I and is connected with a preformed hole of the upper shearing arm (or the lower shearing arm), so that the pressing plate I is prevented from rotating and shifting due to impact vibration generated by shearing, and the impact resistance of the pressing plate I is enhanced.

The pressing plate device is composed of a pressing plate II, a nut V, a nut VI, a washer IV, a spring pin II, a stud II, a cylindrical nut II, a pin, a bolt II and a positioning block. The positioning block is fastened in the dovetail groove of the upper shear arm (or the lower shear arm) through a bolt II and a pin. The pressing plate II is arranged on the end face of the dovetail groove of the upper shearing arm (or the lower shearing arm) through a nut V, a nut VI, a washer IV, a spring pin II and a stud II, and the cutter box is guaranteed to be pressed against and tightly attached to the positioning block. And the cylindrical nut II is arranged in a threaded hole of the upper shearing arm (or the lower shearing arm) and is used for connecting a fastening stud II.

One end of the upper shear arm (the lower shear arm) is respectively hinged on the output shaft section of the upper shear shaft (the lower shear shaft), and the other end of the connecting rod and the box body are respectively hinged with a first pin shaft and a second pin shaft.

The upper shear arm, the upper shear shaft, the connecting rod and the box body form a set of four-bar mechanism. The lower shear arm, the lower shear shaft, the connecting rod and the box body form another set of four-bar mechanism. When the upper shear shaft and the lower shear shaft do relative rotary motion under the action of the power driving system, the two sets of IV link mechanisms are driven to do relative motion, and when the two sets of shear blades meet, the motion shearing of the rolled piece is completed.

The cutter box mechanism is respectively arranged in the dovetail grooves of the upper shear arm and the lower shear arm, and the locking and positioning of the cutter box mechanism in the dovetail grooves are realized through a tapered wedge pressing device.

Through the pressing plate II and the positioning block of the pressing plate device, the automatic positioning and locking functions of the cutter box mechanism along the direction of the upper shear axis (or the lower shear axis) can be realized, and the centering adjustment of the cutter box mechanism along the shear center line is realized.

Adopt above-mentioned technical scheme the utility model discloses, the sword box of sword box mechanism adopts dovetail structure type, easy dismounting, location accuracy.

The shear blade and the knife box are connected and fastened by adopting a prestressed bolt, and a certain pretightening force can be applied by using a special tool when the shear blade and the knife box are connected and fastened.

And the box mechanism and the upper shearing arm (or the lower shearing arm) are locked and positioned by adopting a tapered wedge pressing device.

The wedge blocks and the knife boxes adopt wedge-shaped inclined structural forms, and the wedge-shaped inclined wedge knife box has the functions of automatic pressing and accurate positioning, and is high in reliability.

The tapered wedge pressing device adopts a design that a pressing plate I prevents the tapered wedge from loosening, and realizes the locking and positioning of the tool box mechanism in the dovetail groove. The pressing plate I is fixed by the spring pin I in a positioning mode, and the pressing plate I can be effectively prevented from rotating and dislocating due to shearing vibration.

The positioning block designed by the pressure plate device realizes the automatic positioning of the knife box mechanism along the direction of the upper shear axis (or the lower shear axis). The pressing plate II structure realizes the locking function of the cutter box mechanism along the direction of the upper shear axis (or the lower shear axis). The pressure plate device realizes the centering adjustment function of the knife box mechanism along the shearing center line.

Compared with the prior art, the utility model has the advantages of it is following:

1. the technical scheme that the cutter box mechanism and the shear blade can be integrally replaced is researched and developed, the labor intensity and the overhauling difficulty are reduced, the operation is convenient, the feasibility is strong, and the replacement period of the shear blade is shortened;

2. the wedge pressing device and the pressing plate device ensure the automatic positioning and locking functions of the knife box mechanism and ensure the centering adjustment of the knife box mechanism along the shearing center line;

3. the tool box mechanism adopts a dovetail groove type, the positioning reliability of the wedge block is high, and the potential safety hazard risk is eliminated;

4. the protection device develops a mechanical labyrinth structure, so that impurities such as iron oxide scales and the like are prevented from falling into a wedge joint surface, and the service life of the equipment is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a structural view of a shearing mechanism of a flying shear.

Figure 2 is a view of the shear blade lock assembly shown in enlarged K in figure 1).

Fig. 3 is a schematic view of the structure of the shear blade locking device (a cross-sectional view a-a in fig. 1).

Fig. 4 is a schematic view of the mechanical labyrinth structure of the present invention (R enlarged view of fig. 2).

Fig. 5 is a structural diagram of the knife box mechanism of the present invention.

Fig. 6 is a structural view of the protection device of the present invention.

Fig. 7 is a structural view of the wedge pressing device of the present invention.

In the figure: 1. an upper shear arm; 2. a lower shear arm; 3. a connecting rod; 4. a box body;

5. a pin shaft I; 6. a pin shaft II; 7. a shear shaft is arranged; 8. a lower shear shaft;

9. a knife box mechanism; 10. a guard;

11. a wedge hold-down device; 12. a platen device;

901. cutting edges; 902. a knife box; 903. a gasket I; 904. a nut I;

905. a prestressed bolt; 906. a nut II; 907. a wedge groove;

1001. a protection plate; 1002. a gasket; 1003. a bolt; 1004. a boss portion;

1101. a tapered wedge; 1102. pressing a plate I; 1103. a stud I; 1104. a nut III;

1105. a nut IV; 1106. a gasket III; 1107. a spring pin I; 1108. a cylindrical nut I;

1201. pressing a plate II; 1202. a nut V; 1203. a nut VI; 1204. a gasket IV; 1205. a spring pin II;

1206. a stud II; 1207. a cylindrical nut II; 1208. a pin; 1209. a bolt II; 1210. and (5) positioning the blocks.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1 to 7, a locking device for the cutting edge of a flying shear comprises: the device comprises an upper shear arm 1, a lower shear arm 2, a connecting rod 3, a box body 4, a pin shaft I5, a pin shaft II 6, an upper shear shaft 7, a lower shear shaft 8, a knife box mechanism 9, a protection device 10, a wedge pressing device 11 and a pressing plate device 12. When the cutting edge is replaced, the wedge pressing device 11 and the pressing plate device 12 are removed, and then the wedge 1101 is removed. At this point, the magazine mechanism 9, which needs to be replaced, can be removed from the upper and

lower shear arms

1, 2. And (3) installing the cutter box mechanism 9 provided with a new cutting edge into the installation grooves of the upper cutting arm 1 and the lower cutting arm 2, positioning and locking the cutter box mechanism 9 by the reloading inclined wedge block 1101, reloading the inclined wedge pressing device 11 and the pressing plate device 12 and fastening, and finishing the process of replacing the cutting edge.

The tool box mechanism 9 is composed of a shear blade 901, a tool box 902, a washer I903, a nut I904, a prestressed bolt 905, a nut II 906 and a wedge groove 907. The shear blade 901 is installed in a clamping groove of the cutter box 902, and the shear blade 901 is connected and fastened through a prestressed bolt 905, a washer I903, a nut I904 and a nut II 906. When the connection is fastened, a special tool is adopted to apply a certain pretightening force to the prestressed bolt 905, so that the reliability of the connection fastening is ensured. The structure is shown in figure 4.

The guard 10 is comprised of a guard 1001, a washer II 1002, a bolt I1003 and a boss 1004. The protection plate 1001 is fastened on the upper shear arm 1 and the lower shear arm 2 respectively through a gasket II 1002 and a bolt I1003, and the protruding portion 1004 extends into a wedge groove 907 in the end portion of the cutter box 902 to form a mechanical labyrinth structure, so that impurities such as iron oxide scales and dust particles can be effectively prevented from falling into a wedge joint surface of the wedge pressing device 11 and the cutter box 902.

The wedge pressing device 11 is composed of a wedge 1101, a pressing plate I1102, a stud I1103, a nut III 1104, a nut IV 1105, a washer III 1106, a spring pin 1107 and a cylindrical nut I1108. The wedge 1101 is arranged in a wedge groove formed by the upper shearing arm 1 (or the lower shearing arm 2) and the cutter box 902, and is tightly fixed and positioned by the pressure plate I1102 through a stud I1103, a nut III 1104, a nut IV 1105 and a washer III 1106. A cylindrical nut I1108 is mounted in a threaded hole of the upper shear arm 1 (or the lower shear arm 2) of the stud I1103 and is used for connecting and fastening the stud I1103. Spring pin I1107 runs through clamp plate I1102 to with the hookup of the preformed hole of last shear arm 1 (or lower shear arm 2), avoided clamp plate I1102 to produce impact vibration because of the shearing and rotatory the aversion, strengthened the shock resistance of clamp plate I1102.

The pressing plate device 12 is composed of a pressing plate II 1201, a nut V1202, a nut VI 1203, a washer IV 1204, a spring pin II 1205, a stud II 1206, a cylindrical nut II 1207, a pin 1208, a bolt II 1209 and a positioning block 1210. The positioning block 1210 is fastened in the dovetail groove of the upper shear arm 1 (or the lower shear arm 2) through a bolt II 1209 and a pin 1208. The pressing plate II 1201 is arranged on the end face of the dovetail groove of the upper shear arm 1 (or the lower shear arm 2) through a nut V1202, a nut VI 1203, a washer IV 1204, a spring pin II 1205 and a stud II 1206, and the cutter box 902 is enabled to be pressed against and tightly attached to the positioning block 1210. And a cylindrical nut II 1207 is arranged in a threaded hole of the upper shear arm 1 (or the lower shear arm 2) and is used for connecting a fastening stud II 1206.

One end of the upper shearing arm 1 (the lower shearing arm 2) is hinged to an output shaft section of the upper shearing shaft 7 (the lower shearing shaft 8) respectively, and the other end of the connecting rod 3 and the box body 4 are hinged to a first pin shaft 5 and a second pin shaft 6 respectively.

The upper shear arm 1, the upper shear shaft 7, the connecting rod 3 and the box body 4 form a set of four-bar mechanism. The lower shear arm 2, the lower shear shaft 8, the connecting rod 3 and the box body 4 form another set of four-bar mechanism. When the upper shear shaft 7 and the lower shear shaft 8 do relative rotary motion under the action of the power driving system, the two sets of IV link mechanisms are driven to do relative motion, and when the two sets of shear blades 901 meet, the motion shearing of the rolled piece is completed.

The cutter box mechanisms 9 are respectively arranged in the dovetail grooves of the upper shear arm 1 and the lower shear arm 2, and the locking and positioning of the cutter box mechanisms 9 in the dovetail grooves are realized through the tapered wedge pressing device 11.

Through the pressing plate II 1201 of the pressing plate device 12 and the positioning block 1210, the automatic positioning and locking functions of the cutter box mechanism 9 along the direction of the upper shear shaft 7 (or the lower shear shaft 8) can be realized, and the centering adjustment of the cutter box mechanism 9 along the shearing center line is realized.

Adopt above-mentioned technical scheme the utility model discloses, knife box 902 of knife box mechanism 9 adopts dovetail structure type, easy dismounting, location are accurate.

The shear blade 901 and the knife box 902 are connected and fastened by a prestressed bolt 905, and a certain pretightening force can be applied by a special tool when the shear blade and the knife box are connected and fastened.

The box mechanism 9 and the upper shear arm 1 (or the lower shear arm 2) are locked and positioned by a wedge pressing device 11.

The inclined wedge 1101 and the knife box 902 adopt a wedge-shaped inclined structure type, and have the functions of automatic pressing and accurate positioning, and the reliability is high.

The wedge pressing device 11 adopts a design that a pressing plate I1102 is used for preventing the wedge 1101 from loosening, and the locking and positioning of the tool box mechanism 9 in a dovetail groove are realized. The I1102 of clamp plate fixes a position with I1107 location of spring pin, can prevent effectively that I1102 of clamp plate from rotating the dislocation because of shearing the vibration.

The positioning block 1210 designed by the pressure plate device 12 realizes the automatic positioning of the knife box mechanism 9 along the direction of the upper shear shaft 7 (or the lower shear shaft 8). And the pressure plate II 1201 structure realizes the locking function of the knife box mechanism 9 along the direction of the upper shear axis 7 (or the lower shear axis 8). The pressure plate device 12 realizes the centering adjustment function of the knife box mechanism 9 along the shearing center line.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a flying shear cutting edge locking device which characterized in that includes:

the device comprises an upper shear arm (1), a lower shear arm (2), a connecting rod (3), a box body (4), an upper shear shaft (7), a lower shear shaft (8), a knife box mechanism (9), a protective device (10), a wedge pressing device (11) and a pressing plate device (12);

the upper shearing arm (1) and the lower shearing arm (2) are respectively connected with a connecting part preset at the upper end of the box body (4) and a connecting part preset at the lower end of the box body (4) through a connecting rod (3);

the other end of the upper shear arm (1) is hinged with the output shaft section of the upper shear shaft (7), and the other end of the lower shear arm (2) is connected with the output section of the lower shear shaft (8);

the upper shear arm (1), the upper shear shaft (7), the connecting rod (3) and the upper end connecting part of the box body (4) form a set of four-bar mechanism;

the lower shearing arm (2), the lower shearing shaft (8), the connecting rod (3) and the connecting part at the lower end of the box body (4) form another set of four-bar mechanism;

the end parts of the working ends of the upper shearing arm (1) and the lower shearing arm (2) are detachably assembled with a cutter box mechanism (9) through a dovetail groove structure in a sliding manner;

the tool box mechanism (9) is locked and positioned in the dovetail groove with the tool box mechanism (9) through a wedge pressing device (11);

the platen device (12) includes: the bolt comprises a pressing plate II (1201), a nut V (1202), a nut VI (1203), a washer IV (1204), a spring pin II (1205), a stud II (1206), a cylindrical nut II (1207), a pin (1208), a bolt II (1209) and a positioning block (1210); the positioning block (1210) is fastened in a dovetail groove of the corresponding shear arm through a bolt II (1209) and a pin (1208); the pressing plate II (1201) is arranged on the end face of the dovetail groove corresponding to the shear arm through a nut V (1202), a nut VI (1203), a washer IV (1204), a spring pin II (1205) and a stud II (1206), and the cutter box (902) is guaranteed to be pressed against and attached to the positioning block (1210); and a cylindrical nut II (1207) is arranged in a threaded hole preset in the corresponding shear arm and is used for connecting a fastening stud II (1206).

2. The flying shear blade locking device of claim 1,

further comprising: a guard (10);

the protection device (10) comprises: the protective plate comprises a protective plate (1001), a gasket II (1002), a bolt I (1003) and a boss (1004); the shield plate (1001) includes: and a washer II (1002) and a bolt I (1003) are respectively fastened on the upper shear arm (1) and the lower shear arm (2), and a boss (1004) extends into a wedge block groove (907) at the end part of the cutter box (902) to form a mechanical labyrinth structure.

3. A flying shear blade locking device according to claim 1 or 2,

the cam pressing device (11) comprises: the device comprises a wedge block (1101), a pressing plate I (1102), a stud I (1103), a nut III (1104), a nut IV (1105), a gasket III (1106), a spring pin I (1107) and a cylindrical nut I (1108); the inclined wedge block (1101) is arranged in a wedge block groove formed by the corresponding shear arm and the cutter box (902), and is tightly fixed and positioned by a pressure plate I (1102) through a stud I (1103), a nut III (1104), a nut IV (1105) and a washer III (1106); the cylindrical nut I (1108) is arranged in a threaded hole of the corresponding shear arm of the stud I (1103) and used for connecting and fastening the stud I (1103); the spring pin I (1107) penetrates through the pressure plate I (1102) and is connected with a prepared hole of the installed shear arm.