CN217595800U - Combined lower cross beam suitable for large die forging press - Google Patents
Combined lower cross beam suitable for large die forging press Download PDFInfo
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- CN217595800U CN217595800U CN202221015698.0U CN202221015698U CN217595800U CN 217595800 U CN217595800 U CN 217595800U CN 202221015698 U CN202221015698 U CN 202221015698U CN 217595800 U CN217595800 U CN 217595800U
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Abstract
The utility model relates to the field of metallurgical equipment, in particular to a combined lower beam suitable for a large die forging press, which comprises two first castings, a plurality of second castings and a plurality of pre-tightening pull rod assemblies, wherein the second castings are sequentially arranged in parallel and positioned inside; the large lower beam is formed by combining the prestress of a plurality of parts, so that the weight of each part is within the range of the processing limit at home and abroad, and the technical problem that the lower beam of a large die forging press cannot be manufactured is solved; the large castings are connected in a key mode to transfer stress, so that the castings are deformed and coordinated when stressed; the large castings are transversely connected by adopting a plurality of pre-tightening pull rod assemblies, so that the large castings form an integral lower beam of the large die forging press and bear die forging pressure together.
Description
Technical Field
The utility model relates to a metallurgical equipment field, concretely relates to combination bottom end rail suitable for large-scale die forging press.
Background
In recent years, with the rapid development of the aerospace industry, the demand for the integral forming of large integral die forgings is increasing, and the construction of large die forging presses in China is increasing rapidly. In the design process of a large die forging press (more than or equal to 300 MN) with a prestressed frame structure, the lower beam can not be designed into a part because the manufacture of the lower beam exceeds the limit of the current manufacturing capability at home and abroad. At present, the single piece of the limit manufacturing capacity of a domestic casting and forging piece does not exceed 500 tons, the weight of a lower beam of a large die forging press with a prestressed frame structure is about 1700 tons, and the design requirement of the large die forging press (more than or equal to 300 MN) with the prestressed frame structure in China cannot be met, so that a method for designing a plurality of pieces in a combined mode is needed to meet the requirement of the large die forging press (more than or equal to 300 MN) with the prestressed frame structure in China.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a combination bottom end rail suitable for large-scale die forging press, and a big bottom end rail is constituteed to the method that especially adopts several spare parts prestressing force combinations, satisfies the designing requirement of large-scale die forging press bottom end rail intensity and rigidity.
The utility model provides a technical problem can adopt following technical scheme to realize:
the utility model provides a combination bottom end rail suitable for large-scale die forging press, includes two first castings, a plurality of second castings and a plurality of pretension draw bar assembly, a plurality of second castings are arranged side by side in proper order and are located inside, and two first casting symmetric distribution second casting both sides are connected through a plurality of pretension draw bar assembly between adjacent first casting and/or the second casting, the large-scale casting that does not equal to or more than 450 tons is equallyd divide to the weight of every first casting and every second casting, the second casting volume is greater than first casting volume.
Furthermore, the adjacent first casting and/or second casting are connected by a clamping key.
Furthermore, the clamping keys comprise a first clamping key and a second clamping key, the first casting and the second casting are connected through the first clamping key, and the two adjacent second castings are connected through the second clamping key.
Furthermore, the first casting and the second casting are both integrally cast strip-shaped polyhedrons, each polyhedron at least comprises two parallel and opposite surfaces, namely a first plane and a second plane, and the adjacent first casting and/or second casting are tightly attached to each other through the adjacent first plane or second plane.
Furthermore, the number of the second castings is 2, the number of the 2 first castings is two structurally symmetrical outer beams, and the number of the 2 second castings is two structurally symmetrical inner beams.
Furthermore, the outer beams are a first outer beam and a second outer beam, the inner beams are a first inner beam and a second inner beam, and the two outer beams and the two inner beams are sequentially arranged according to the sequence of the first outer beam, the first inner beam, the second inner beam and the second outer beam.
Furthermore, the two adjacent inner beams are provided with a central ejection hole at the joint for the lower ejection device to penetrate out.
Furthermore, the pre-tightening pull rod assembly comprises a first pre-tightening pull rod assembly and a second pre-tightening pull rod assembly, each first pre-tightening pull rod assembly and each second pre-tightening pull rod assembly are perpendicular to the first plane or the second plane of any one of the first casting and the second casting and penetrate through each first casting and each second casting, and the pre-tightening force of the second pre-tightening pull rod assembly is larger than that of the first pre-tightening pull rod assembly.
Furthermore, the bottom end faces of all castings are provided with convex constant-strength beams with a certain width, all the constant-strength beams form constant-strength beam belts after being spliced, the constant-strength beam belts are used for being in contact with the ejection device, all the second pre-tightening pull rod assemblies are distributed in the constant-strength beam belts in an equidistant arrangement mode, and each second pre-tightening pull rod assembly penetrates through and tensions all the castings to enable any adjacent castings to be tightly attached.
The beneficial effects of the utility model are that:
compared with the prior art, the utility model discloses there is following a bit:
by adopting a design method of combining the prestress of four large castings with different volumes, the weight of each part is within the range of the processing limit at home and abroad, and the technical problem that the lower beam of a large die forging press cannot be manufactured is solved;
the four parts are connected by adopting a clamping key to transfer stress, so that the four large castings are deformed and coordinated when stressed, and the two middle parts are designed to have larger volumes according to the arrangement of the workbench of the large-section die forging press so as to be beneficial to the stress of the workbench;
the four large castings are transversely connected by adopting a plurality of prestressed pull rods, so that the four large castings form an integral lower beam of the large die forging press and bear die forging pressure together;
the lower ejection device is arranged in the center of the middle two parts, so that the requirement of ejecting the lower part of the large die forging press is met, and meanwhile, the joint of the middle two parts and the lower ejection device is locally reinforced, so that the strength and the rigidity of the whole lower cross beam are further improved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural view of a lower cross beam of a large die forging press according to the present invention.
In the figure: 1-a first outer beam, 2-a first inner beam, 3-a second inner beam, 4-a second outer beam, 5-a central ejection hole, 6-a first snap key, 7-a second snap key, 8-a first pre-tightening pull rod assembly, 9-a second pre-tightening pull rod assembly, and 10-an equal-strength beam band.
Detailed Description
The technical solution of the combined lower beam suitable for the large die forging press provided by the embodiments of the present invention will be described in detail through several specific embodiments.
The utility model provides a combination bottom end rail suitable for large-scale die forging press, includes two first castings, a plurality of second castings and a plurality of pretension draw bar assembly, a plurality of second castings are arranged side by side in proper order and are located inside, and two first castings symmetric distribution arrange in the both ends outside of a plurality of second castings constitutional structure, connect through a plurality of pretension draw bar assembly between adjacent first castings and/or the second casting, the weight of every first casting and every second casting is equallyd divide and is do not less than 450 tons, the second casting volume is greater than first casting volume.
As shown in figure 1, the lower beam adopts two first castings and a plurality of second castings which are arranged in parallel and sequentially, the size of an intermediate part is larger during manufacturing according to the arrangement of a workbench of a large-size die forging press so as to be beneficial to the stress of the workbench, the weight of each first casting and each second casting is equal to or less than that of a large casting with the weight of 450 tons, and the weight of each large casting does not exceed the processing limit of the large castings at home and abroad. The utility model discloses in the second foundry goods volume be greater than first foundry goods volume, consequently the second foundry goods is located the middle and distributes in proper order and arranges, first foundry goods evenly distributed is arranged at the both ends that the second foundry goods was arranged and is constituteed the structure, in order to ensure the deformation coordination of all foundry goods, require must interconnect between adjacent first foundry goods and/or the second foundry goods, adopt a plurality of pretension pull rod assemblies transverse connection during the connection, make two first foundry goods and M second foundry goods constitute an integral large-scale die forging press bottom end rail, thereby bear the die forging pressure jointly; in order to make the stress (applied prestress) uniform, the pre-tightening pull rod assemblies are arranged uniformly, and finally the lower beam of the large die forging press shown in fig. 1 is formed.
Referring to fig. 1, the adjacent first castings and/or second castings are connected through clamping keys and transmit stress, so that each part of the two first castings and each part of the plurality of second castings are stressed uniformly during stress deformation, and deformation is coordinated, and all the first castings and the second castings are subjected to the forging pressure of the large-scale die forging press together.
The clamping keys comprise a first clamping key 6 and a second clamping key 7, the first casting and the second casting are connected through the first clamping key 6, and two adjacent second clamping keys 7 are connected through the second clamping keys 7; the first clamping key 6 and the second clamping key 7 are different in structure, the first clamping key is installed between the first casting and the second casting, and the second clamping key is located between the adjacent second castings. Because the first casting and the second casting are different in structure, the two clamping key structures are different, and the four large castings are enabled to be deformed and coordinated when being stressed.
The first casting and the second casting are strip polyhedrons cast integrally, each polyhedron at least comprises two parallel and opposite faces, namely a first plane and a second plane, the adjacent first casting and/or second casting are tightly attached to the adjacent first plane or second plane, the direction shown in the figure 1 is taken as an example, the face where the pre-tightening pull rod assembly is located is taken as the first plane, the opposite face is taken as the second plane, the second plane of the first casting is tightly attached to the first plane of the second casting, the second plane of the second casting is tightly attached to the first plane of the third second casting, and so on, all the first casting and the second casting are tightly attached to ensure the compact structure of the lower cross beam and facilitate the application of pre-stress, and finally the pre-tightening force is applied through the pre-tightening pull rod assembly to tighten the lower cross beam, so that the strength and the rigidity of the integral lower cross beam are enhanced.
The two first castings and the plurality of second castings are respectively 2, the 2 first castings are two outer beams with symmetrical structures, the 2 second castings are two inner beams with symmetrical structures, the weight of each inner beam and each outer beam is less than or equal to 450 tons, and the weight of the four large castings does not exceed the processing limit of the large castings at home and abroad. The utility model discloses the weight of well second foundry goods is less than or equal to 430 tons, and the weight of first foundry goods is less than or equal to 320 tons, adopts the first foundry goods of this weight and second foundry goods to satisfy the die forging pressure demand of large-scale die forging press.
The outer beam is a first outer beam 1 and a second outer beam 4, the inner beam is a first inner beam 2 and a second inner beam 3, and the two outer beams and the two inner beams are sequentially arranged according to the sequence of the first outer beam 1, the first inner beam 2, the second inner beam 3 and the second outer beam 4. That is to say, two first inner beams 2 and second inner beams 3 with symmetrical structures are located inside, and first outer beams 1 and second outer beams 4 are located outside, wherein it can be seen from fig. 1 that the first inner beams 2 and second inner beams 3 are provided with grooves and through holes, and the whole end is provided with a notch, these structures are all arranged for reducing the weight of the structure, and the same principle is that the grooves and through holes on the first outer beams 1 and second outer beams 4 are also the same; the utility model adopts the prestress combined integral lower beam to be designed according to the method of the equal-strength beam, thereby reducing the integral weight of the lower beam;
the two adjacent inner beams are provided with a central ejection hole 5 at the joint for the lower ejection device to penetrate out; the central ejection hole 5 is positioned in the center of the joint of the two inner beams, and the central ejection hole is used for penetrating and connecting an ejection device, so that the requirement of ejecting the lower part of the large die forging press is met.
The pre-tightening pull rod assembly comprises a first pre-tightening pull rod assembly 8 and a second pre-tightening pull rod assembly 9, each first pre-tightening pull rod assembly 8 and each second pre-tightening pull rod assembly 9 are perpendicular to a first plane or a second plane of any one of the first casting and the second casting and penetrate through each first casting and each second casting, the pre-tightening force of each second pre-tightening pull rod assembly 9 is larger than that of the corresponding first pre-tightening pull rod assembly 8, the first pre-tightening pull rod assemblies 8 and/or the second pre-tightening pull rod assemblies 9 are/is evenly distributed on the end faces of the upper edge and the lower edge of the corresponding casting in the length direction, and the strength and the rigidity of the whole lower crossbeam can be effectively improved by adopting a plurality of pre-tightening pull rod assemblies; the first pre-tightening pull rod assembly 8 and the second pre-tightening pull rod assembly 9 both comprise pre-tightening pull rods and pre-tightening nuts, the pre-tightening nuts are screwed on the parts, penetrating out of the first casting or the second casting, of the pre-tightening pull rods of the first pre-tightening pull rod assembly 8 and the second pre-tightening pull rod assembly 9, and the first casting and/or the second casting are/is fixedly tightened through the pre-tightening nuts.
The bottom end faces of all castings are provided with convex constant-strength beams with a certain width, all the constant-strength beams form constant-strength beam belts 10 after being spliced, the constant-strength beam belts 10 are used for being in contact with an ejection device, all the second pre-tightening pull rod assemblies 9 are distributed in the constant-strength beam belts 10 in an equidistant arrangement mode, and each second pre-tightening pull rod assembly 9 penetrates through and tightens all the castings to enable any adjacent castings to be tightly attached. Specifically, the bottom end faces of the two first castings and the second castings are respectively provided with a raised constant-strength beam with a certain width, and the constant-strength beams of the bottom end faces of the two first castings and the second castings form a constant-strength beam belt which is used for being in contact with the ejection device.
The lower cross beam manufactured by arranging two first castings and a plurality of second castings in parallel comprises a horizontal bearing surface at the top, the horizontal bearing surface is used for bearing the die forging pressure of a large die forging press, the bottom is used for mounting a mounting surface of an ejection device, the surface is used for contacting with the ejection device and simultaneously bearing the reverse force, the axial direction of the stress on the horizontal bearing surface is provided with a convex constant-strength beam with a certain width on the mounting surface opposite to the axial direction, the width of the convex is smaller than the length of the first castings and the length of the second castings in the length direction, the constant-strength beam is used for increasing the bearing force of the position of the whole body, and the constant-strength beam is composed of the convex constant-strength beams of each first casting and each second casting at the position, so that the strength and the rigidity of the whole lower cross beam are further increased; the positions of the strength beams are contacted with the ejection device, and the local reinforcement design is carried out to increase the overall strength.
It should be noted that the ejection device of the present invention is a device existing in the field, and therefore, the device does not belong to the protection scope of the present invention.
And a second pre-tightening pull rod assembly 9 is adopted to penetrate and tighten between the first casting and the second casting, which are positioned in the position between the raised equal-strength beams, so that the first casting and/or the second casting are tightly attached, the reserved space of the protruded equal-strength beam greatly meets the requirement of using the second pre-tightening pull rod assembly 9 with large pre-tightening force, and meanwhile, the pre-tightening pull rods without specification pre-tightening force are adopted to enhance the strength and rigidity of the whole lower cross beam.
Can find out by figure 1 the utility model discloses a lower beam is whole to be tightened along all adopting a plurality of first pretension pull rod assembly 8 to apply the pretightning force, and lower edge adopts second pretension pull rod assembly 9 to apply the pretightning force along adopting strength beam position such as middle part to take turns taut, and both ends position adopts first pretension pull rod assembly 8 to apply the pretightning force and take turns taut to holistic lower beam's intensity and rigidity have been guaranteed.
The manufacturing method of the utility model is as follows:
the utility model discloses a first outer beam 1, first inner beam 2, second inner beam 3 and the outer beam 4 of second order arrange in proper order and constitute the combination bottom end rail of large-scale die forging press together, and first pretension pull rod assembly 8 and second pretension pull rod assembly 9 run through the combination bottom end rail and apply the pretightning force respectively and make first outer beam 1, first inner beam 2, second inner beam 3 and the outer beam 4 of second tightly hug closely together become a combination whole bottom end rail.
And applying the calculated prestress on each pre-tightening pull rod to enable the four parts to form an organic whole to bear the die forging pressure of the large die forging press together.
It should be noted that the purpose of the prestress of the pre-tightening pull rod is to ensure the integral rigidity of the lower cross beam in the working process, and the straight point is to ensure that adjacent castings are kept close to each other and do not open a seam when the lower cross beam bears the working load.
The calculation method of the prestress is to adopt finite element simulation to establish a mechanical model of the lower cross beam, analyze the displacement condition between the adjacent castings when the lower cross beam bears the working load, ensure that the adjacent castings do not move relatively when the lower cross beam bears the working load, and further ensure the integral rigidity of the lower cross beam. The finite element simulation method is the existing general technology and is not in the protection scope of the patent.
A first clamping key 6 is arranged between the first outer beam 1 and the first inner beam 2, a second clamping key 7 is arranged between the first inner beam 2 and the second inner beam 3, and a first clamping key 6 is arranged between the second inner beam 3 and the second outer beam 4, so that the four beams are stressed consistently and further deform coordinately in the stress deformation process. The middle of the combined lower beam, i.e. the center of the first inner beam 2 and the second inner beam 3, is designed with a central ejection hole 5 for mounting a lower ejection device. A first outer beam 1, a first inner beam 2, a second inner beam 3 and a second outer beam 4 are combined together and are pre-tightened through a pre-tightening pull rod to form an integral lower cross beam.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all such changes are within the scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
Technical solutions between various embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Claims (9)
1. The utility model provides a combination bottom end rail suitable for large-scale die forging press which characterized by: the casting device comprises two first castings, a plurality of second castings and a plurality of pre-tightening pull rod assemblies, wherein the second castings are sequentially arranged side by side and located inside, the two first castings are symmetrically distributed on the two sides of the second castings, the adjacent first castings and/or the second castings are connected through the pre-tightening pull rod assemblies, the weight of each first casting and the weight of each second casting are respectively equal to or less than a large casting of 450 tons, and the volume of the second casting is larger than the volume of the first casting.
2. The bottom cross member of claim 1, wherein the bottom cross member is adapted for use with a large die forging press, and further comprises: and the adjacent first casting and/or second casting are connected by a clamping key.
3. The bottom cross member of claim 2, wherein the bottom cross member is adapted for use with a large die forging press, and further comprises: the clamping key comprises a first clamping key (6) and a second clamping key (7), the first casting and the second casting are connected through the first clamping key (6), and two adjacent second castings are connected through the second clamping key (7).
4. The lower cross member of claim 1, 2 or 3, wherein the lower cross member is a combined cross member for a large die forging press, and comprises: the first casting and the second casting are integrally cast strip-shaped polyhedrons, each polyhedron at least comprises two parallel and opposite surfaces, namely a first plane and a second plane, and the adjacent first casting and/or second casting are mutually attached to the adjacent first plane or second plane.
5. The unitized lower beam for a large die forging press of claim 4, wherein: the number of the second castings is 2, the 2 first castings are two structurally symmetrical outer beams, and the 2 second castings are two structurally symmetrical inner beams.
6. The bottom cross member of claim 5, wherein the bottom cross member is adapted for use with a large die forging press, and further comprises: the outer beam is a first outer beam (1) and a second outer beam (4), the inner beam is a first inner beam (2) and a second inner beam (3), and the two outer beams and the two inner beams are sequentially arranged according to the sequence of the first outer beam (1), the first inner beam (2), the second inner beam (3) and the second outer beam (4).
7. The unitized lower beam for a large die forging press of claim 6, wherein: and a central ejecting hole (5) is formed at the joint of the two adjacent inner beams.
8. The unitized lower beam for a large die forging press of claim 4, wherein: the pre-tightening pull rod assembly comprises a first pre-tightening pull rod assembly (8) and a second pre-tightening pull rod assembly (9), each first pre-tightening pull rod assembly (8) and each second pre-tightening pull rod assembly (9) are perpendicular to the first plane or the second plane of any one of the first casting and the second casting and penetrate through each first casting and each second casting, and the pre-tightening force of the second pre-tightening pull rod assembly (9) is larger than that of the first pre-tightening pull rod assembly (8).
9. The unitized lower beam for a large die forging press of claim 8, wherein: the bottom end faces of all castings are provided with convex constant-strength beams, all the constant-strength beams form constant-strength beam belts (10) after being spliced, the constant-strength beam belts (10) are used for being in contact with an ejection device, all the second pre-tightening pull rod assemblies (9) are distributed in the constant-strength beam belts (10) in an equidistant arrangement mode, and each second pre-tightening pull rod assembly (9) penetrates through and tightens all the castings to enable any adjacent castings to be tightly attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221015698.0U CN217595800U (en) | 2022-04-28 | 2022-04-28 | Combined lower cross beam suitable for large die forging press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221015698.0U CN217595800U (en) | 2022-04-28 | 2022-04-28 | Combined lower cross beam suitable for large die forging press |
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| Publication Number | Publication Date |
|---|---|
| CN217595800U true CN217595800U (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221015698.0U Active CN217595800U (en) | 2022-04-28 | 2022-04-28 | Combined lower cross beam suitable for large die forging press |
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| CN (1) | CN217595800U (en) |
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- 2022-04-28 CN CN202221015698.0U patent/CN217595800U/en active Active
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