CN111098879B - A mounting structure for radial extrusion deformation of thin wall pipe - Google Patents
A mounting structure for radial extrusion deformation of thin wall pipe Download PDFInfo
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- CN111098879B CN111098879B CN201911410965.7A CN201911410965A CN111098879B CN 111098879 B CN111098879 B CN 111098879B CN 201911410965 A CN201911410965 A CN 201911410965A CN 111098879 B CN111098879 B CN 111098879B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F19/00—Wheel guards; Bumpers; Obstruction removers or the like
- B61F19/04—Bumpers or like collision guards
Abstract
The invention discloses a mounting structure for radial extrusion deformation of a thin-wall circular tube, which comprises: mounting a bottom plate; the guide post is arranged on the mounting bottom plate and is provided with a ribbed plate; the upright columns are arranged on the installation bottom plate, are arranged on the periphery of the guide columns and are provided with guide holes; a stress plate; the plurality of pressure head structures are arranged on the stress plate; the fixed frame is arranged around the outer sides of the plurality of pressure head structures, and the pressure head structures are fixedly arranged on the fixed frame; and the guide rods are arranged on the stress plate and penetrate through the guide holes. The installation structure can ensure that the pressure head structure and the thin-wall circular tube have a determined action position, ensure that a plurality of pressure head structures simultaneously extrude the thin-wall circular tube along the axial direction of the thin-wall circular tube, and avoid the generation of oblique loading and the rollover of the energy absorption device; the space for the thin-wall circular tube and the guide column to extend out does not need to be reserved at the installation end, the installation is simple, and the application range is wide.
Description
Technical Field
The invention relates to the technical field of train collision energy absorption, in particular to a mounting structure for radial extrusion deformation of a thin-wall circular tube.
Background
Railway vehicle collision accidents frequently occurring at home and abroad bring heavy and painful training to people. Particularly, with the increasing running speed of high-speed railways in recent years, the role of railway transportation in relieving traffic pressure is increasing, and once a collision accident occurs, the consequences and the loss are not considered. The railway is used as an important infrastructure of national economy and a mass transportation tool, and the safety of lives and properties of passengers and drivers should be always taken as the starting point of the operation safety of rail transit. Considering how to effectively dissipate the energy generated by train collision and reduce the damage to the train caused by collision, the development of the passive safety protection research of the railway vehicle is very important.
During a vehicle collision, due to the need for safety protection, collision kinetic energy needs to be absorbed or dissipated as much as possible, so that a special element needs to be adopted as an energy absorption structure to meet the requirement of crashworthiness of the vehicle structure. Safe and reliable, small in structure, light in weight and high in efficiency are favored by more and more researchers.
Based on the existing design scheme of the energy absorption mode, it is feasible to absorb the impact energy by using the radial bulging deformation of the thin-wall metal round pipe, and how to realize the deformation mode of the thin-wall round pipe becomes important research content. The patent CN 109398403A discloses a thin-wall pipe radial bulging deformation energy-absorbing device, an application method and a train vehicle with the thin-wall pipe radial bulging deformation energy-absorbing device. When a train collides, the inducing teeth on the top end cover plate act on the thin-wall plastic deformation energy absorption pipe under the action of collision impact force, so that the thin-wall plastic deformation energy absorption pipe radially bulges to absorb and dissipate collision kinetic energy.
Although the thin-walled tube radial-bulging deformation energy absorption device can absorb and dissipate collision kinetic energy relatively stably, and parts such as the top cover plate, the guide plate base, the guide column and the like can be reused, the device still has the following defects: (1) the deformation energy absorption device cannot ensure that induced teeth and a cross guide column rib plate have correct positions, cannot ensure that the induced teeth are positioned in the middle of the adjacent guide column rib plates, cannot fully utilize an extrusion space (namely a fan-shaped area formed by two adjacent rib plates of a thin-wall circular tube and a guide column), influences the energy absorption effect, and can generate oblique loading and even cause the deformation energy absorption device to turn over if a plurality of induced teeth cannot simultaneously extrude the thin-wall circular tube along the axial direction of the thin-wall circular tube; (2) when the anti-climbing teeth are impacted, the top cover plate moves along the axial direction of the thin-wall plastic deformation energy absorption pipe, and at the moment, the thin-wall circular pipe and the guide column extend out of the top cover plate, so that the design of the installation end needs to be considered when the deformation energy absorption device is installed, and a space for the thin-wall circular pipe and the guide column to extend out needs to be reserved so as not to block the effective extrusion stroke of the deformation energy absorption device; (3) the deformation energy absorption device uniformly distributes the mutagenesis teeth inside the circular ring of the top cover plate, and the deformation energy absorption device is not beneficial to processing and manufacturing and is not convenient to install and disassemble.
Disclosure of Invention
The invention mainly aims to provide a mounting structure for radial extrusion deformation of a thin-wall circular tube, which can ensure that a pressure head and the thin-wall circular tube have certain action positions, can ensure that a plurality of pressure heads simultaneously extrude the thin-wall circular tube along the axial direction of the thin-wall circular tube, avoids the generation of oblique loading and the rollover of an energy absorption device, does not need to reserve a space for the thin-wall circular tube and a guide column to extend out at a mounting end, and has simpler mounting and wider application range.
In order to achieve the above object, the present invention provides a mounting structure for radial extrusion deformation of a thin-walled circular tube, the mounting structure comprising:
mounting a bottom plate;
the guide post is arranged on the mounting base plate, a plurality of rib plates are arranged on the guide post, and an extrusion deformation area is formed between every two adjacent rib plates;
the upright posts are arranged on the installation bottom plate, arranged on the periphery of the guide posts and provided with guide holes;
a stress plate;
the pressure head structures are arranged on the stress plate, and each pressure head structure corresponds to one extrusion deformation area;
the fixed frame is arranged around the outer sides of the plurality of pressure head structures, and the pressure head structures are fixedly arranged on the fixed frame;
and the guide rods are arranged on the stress plate and penetrate through the guide holes.
Further, the indenter structure includes:
one end of the pressure head mounting and positioning block is mounted on the stress plate through a bolt, and the other end of the pressure head mounting and positioning block is provided with a first mounting groove;
the pressure head, the one end of pressure head be equipped with first mounting groove assorted second mounting groove, the pressure head passes through the second mounting groove to be installed on pressure head erection locating piece with first mounting groove interference fit, the pressure head passes through bolt fixed mounting on fixed frame, the lower extreme of pressure head has the inclined plane that is used for extrudeing the thin wall pipe.
Furthermore, a positioning claw is arranged at each of two ends of the first mounting groove on the pressure head mounting and positioning block, and when the pressure head is clamped on the pressure head mounting and positioning block, the two positioning claws are respectively clamped at two sides of the pressure head.
Further, the inner corners of the fixed frame are rounded.
Furthermore, a counter bore is formed in the stress plate, the pressure head structure and the guide rod are both mounted on the stress plate through bolts, and the bolts are arranged in the counter bore.
Further, the counter sink includes first counter sink and second counter sink, and the guide arm is through wearing to establish the bolt fixed mounting in first counter sink on the atress board, and the pressure head structure is through wearing to establish the bolt fixed mounting in the second counter sink on the atress board, is provided with multiunit second counter sink on the atress board, and the distance inequality between the central point of each group's second counter sink and atress board.
Furthermore, the end face of the end, extending outwards, of the rib plate is an arc-shaped face, and the corner of the end face of the end, extending outwards, of the rib plate is a round angle.
Furthermore, the mounting base plate is square, the guide post is in a cross shape, and the rib plates on the guide post are arranged along the diagonal line of the mounting base plate.
Compared with the prior art, the invention has at least the following beneficial effects:
(1) the pressing head structure is positioned through the upright columns, the guide holes and the guide rods, the pressing head structure is prevented from moving outwards or being extruded and expanded and deformed under the action of transverse force in the collision process through the fixed frame, and the upright columns, the guide holes, the guide rods and the fixed frame act together to ensure that a plurality of pressing head structures can contact the thin-wall circular tube at the same time, so that the pressing force is loaded along the axial direction of the thin-wall circular tube, the acting force is more stable, and the condition that the deformation energy absorption device turns on one side due to the fact that the pressing head structures do not extrude the thin-wall circular tube at the same time to generate oblique loading;
(2) the mounting structure positions the pressure head structure through the upright post, the guide hole and the guide rod, so that the pressure head structure can be ensured to be positioned in the middle of an extrusion deformation area, the extrusion space can be fully utilized, and the energy absorption effect is ensured;
(3) the guide column and the thin-wall circular tube are arranged on the mounting bottom plate, the pressure head structure is mounted on the stress plate, the mounting structure is integrally mounted on a vehicle through the mounting bottom plate, a space for the thin-wall circular tube and the guide column to extend out is not required to be reserved on the vehicle at the mounting end of the mounting structure, and the mounting applicability is better;
(4) the pressure head mounting and positioning block is connected with the pressure head through the first mounting groove and the second mounting groove in an interference fit manner by adopting a split type pressure head structure, so that the connecting structure is simple, the connecting stability is good, and the pressure head is convenient to mount, dismount and replace; the two ends of the first mounting groove of the pressure head mounting and positioning block are respectively provided with the positioning claws, and the positioning claws are respectively clamped on the two sides of the pressure head, so that the situation that the pressure head shakes and deflects under the action of stress can be effectively avoided, and the stability of the acting force of the mounting structure is further improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is an overall exploded view of a mounting structure of an embodiment of the present invention.
Fig. 2 is an exploded view of the force-bearing plate, the ram structure, the guide rods, and the fixed frame in the mounting structure of the embodiment of the present invention.
Fig. 3 is an exploded view of a mounting base, a pillar, and a guide post in the mounting structure according to the embodiment of the present invention.
Fig. 4 is an exploded view of a pressure head structure in a mounting structure according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of a fixing frame in the mounting structure according to the embodiment of the present invention.
Fig. 6 is a schematic structural view of a guide post in the mounting structure according to the embodiment of the present invention.
Fig. 7 is an exploded view of the stress plate, the pressure head structure, the guide rod and the fixing frame in the mounting structure according to the embodiment of the invention (wherein the stress plate is provided with a plurality of groups of second countersunk holes).
Wherein the figures include the following reference numerals:
10. mounting a bottom plate; 20. a guide post; 21. a rib plate; 22. a crush zone; 30. a thin-walled circular tube; 40. a column; 41. a guide hole; 50. a stress plate; 51. a first counterbore; 52. a second counterbore; 60. a pressure head structure; 61. a positioning block is arranged on the pressure head; 62. a pressure head; 70. a fixed frame; 80. a guide bar; 611. a first mounting groove; 612. a positioning claw; 621. and a second mounting groove.
Detailed Description
In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The use of "first," "second," and similar terms in the description and in the claims of the present application do not denote any order, quantity, or importance, but rather the intention is to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" and "coupled" and the like are not restricted to direct connections, but may be indirectly connected through other intermediate connections. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
The installation structure for radial extrusion deformation of the thin-wall circular tube is installed on a train together with the thin-wall circular tube 30 made of metal materials, and when a collision accident occurs to a train, the thin-wall circular tube 30 is extruded through the installation structure, so that the thin-wall circular tube 30 deforms, and the purposes of absorbing and dissipating collision kinetic energy are achieved. The structure of the mounting structure is schematically shown in fig. 1 to 6, and as can be seen from the drawings, the mounting structure mainly comprises a mounting base plate 10, a guide post 20, a vertical column 40, a stress plate 50, a pressure head structure 60, a fixed frame 70 and a guide rod 80. The mounting bottom plate 10 is used for mounting the mounting structure on a train vehicle integrally, and one side surface of the mounting bottom plate 10 is connected with the train vehicle; a guide post 20 is arranged on the other side surface of the mounting base plate 10, the guide post 20 is provided with a plurality of rib plates 21, and a fan-shaped extrusion deformation area 22 is formed between two adjacent rib plates 21; the thin-wall round tube 30 is detachably sleeved on the outer side of the guide post 20; the upright columns 40 are arranged on the installation bottom plate 10, the number of the upright columns 40 is multiple, the upright columns 40 are uniformly distributed on the peripheries of the guide columns 20 and the thin-wall circular tubes 30, and each upright column 40 is provided with a guide hole 41; the pressure head structures 60 are arranged on one side of the stress plate 50, the number of the pressure head structures 60 is multiple, and each pressure head structure 60 is arranged corresponding to one extrusion deformation area 22; the fixed frame 70 is arranged around the outer sides of the plurality of pressure head structures 60, and the pressure head structures 60 are fixedly arranged on the fixed frame 70; the guide rods 80 are arranged on the stress plate 50 and arranged on the same side of the pressure head structure 60, the number of the guide rods 80 is multiple, the number of the guide rods 80 is equal to that of the upright posts 40, and the multiple guide rods 80 are movably arranged in the guide holes 41 in the upright posts 40 in a penetrating mode.
In the installation structure for radial extrusion deformation of the thin-wall circular tube, the guide posts 20 are arranged on the installation bottom plate 10, the plurality of the upright posts 40 are arranged on the installation bottom plate 10, the guide holes 41 are arranged on the upright posts 40, the pressure head structure 60 is installed on the stress plate 50, the plurality of guide rods 80 are arranged on the stress plate 50, the guide rods 80 are arranged in the guide holes 41 in a penetrating manner, and the fixing frame 70 is arranged to fix the pressure head structure 60; the pressure head structure 60 can be positioned through the upright post 40, the guide hole 41 and the guide rod 80, and the pressure head structure 60 can be prevented from moving outwards or being extruded and deformed under the action of transverse force in the collision process through the fixing frame 70; when the energy absorption device is used, the thin-wall circular tube 30 is sleeved outside the guide post 20, and the combined action of the upright post 40, the guide hole 41, the guide rod 80 and the fixed frame 70 ensures that a plurality of pressure head structures 60 can simultaneously contact the thin-wall circular tube 30, ensures that the extrusion force is loaded along the axial direction of the thin-wall circular tube 30, ensures that the action force is more stable, and avoids the situation that the side turning of the energy absorption device is caused by oblique loading generated when the pressure head structures 60 extrude the thin-wall circular tube 30 when not used; moreover, the mounting structure can ensure that the pressure head structure 60 is positioned in the middle of the extrusion deformation area 22, the extrusion space can be fully utilized, and the energy absorption effect is ensured; because the guide post 20 and the thin-wall circular tube 30 of the installation structure are arranged on the installation bottom plate 10, the pressure head structure 60 is arranged on the stress plate 50, the other side of the installation bottom plate 10 is arranged on a train, when collision occurs, one side of the installation bottom plate 10 is relatively static, the stress plate 50 drives the pressure head structure 60 to move along the axial direction of the thin-wall circular tube 30 under the stress, therefore, the space for extending the thin-wall circular tube 30 and the guide post 20 is not required to be reserved on the train at the installation end of the installation structure, and the installation applicability is better.
Specifically, referring to fig. 1, 2 and 4, in the present embodiment, the ram structure 60 includes a ram mounting and positioning block 61 and a ram 62. Wherein, one end of the pressure head mounting and positioning block 61 is mounted on the stress plate 50 through a bolt, and the other end of the pressure head mounting and positioning block 61 is provided with a first mounting groove 611; a second mounting groove 621 matched with the first mounting groove 611 is arranged at one end of the pressure head 62, the pressure head 62 is mounted on the pressure head mounting and positioning block 61 through the second mounting groove 621 and the first mounting groove 611 in an interference fit manner, the pressure head 62 is fixedly mounted on the fixing frame 70 through a bolt, and the lower end of the pressure head 62 is provided with an inclined surface for extruding the thin-walled circular tube 30. According to the arrangement, the pressure head structure 60 adopts the split type pressure head installation positioning block 61 and the pressure head 62, compared with the existing mode that the mutagenesis teeth are arranged in the circular ring of the top end cover plate, the pressure head structure 60 is more convenient to process and manufacture, the pressure head installation positioning block 61 and the pressure head 62 are connected in an interference fit mode through the first installation groove 611 and the second installation groove 621, the connection structure is simple, the connection stability is good, and the installation and the disassembly are convenient. In addition, because the pressure head 62 needs to extrude and rub the thin-wall circular tube 30 during collision, abrasion may occur after repeated use, and the adoption of the split type pressure head structure 60 of the invention also facilitates the replacement of the pressure head 62.
When the mounting structure is impacted, the ram 62 may rock and deflect under force. In order to solve the above problem, referring to fig. 1, 2 and 4, in the present embodiment, two positioning claws 612 are respectively disposed at two ends of the first mounting groove 611 on the pressure head mounting and positioning block 61, and when the pressure head 62 is clamped on the pressure head mounting and positioning block 61 through interference fit, the two positioning claws 612 can be respectively clamped on two sides of the pressure head 62. Set up like this, can effectively avoid pressure head 62 to take place to rock about under the atress effect and the condition of deflecting, further improved the stationarity of this mounting structure effort.
Referring to fig. 1, 2 and 5, in the present embodiment, the inner corners of the fixing frame 70 are rounded. The primary function of the securing frame 70 in this mounting configuration is to prevent the ram structure 60 from moving outwardly or collapsing under lateral forces. When this mounting structure receives the collision, pressure head structure 60 receives the transverse force, and this transverse force is used for fixed frame 70 on, sets up the interior angle with fixed frame 70 to the fillet, can strengthen fixed frame 70's rigidity, effectively avoids square fixed frame 70 to lose efficacy because the atress is too big to break off.
Specifically, in the present embodiment, a plurality of countersunk holes are provided in the force-receiving plate 50, and the ram structure 60 and the guide rods 80 are each mounted on the force-receiving plate 50 by bolts, which are provided in these countersunk holes. Through setting up the bolt in the countersunk head, avoided the bolt hood to be higher than the plane at atress plate 50 place and be unfavorable for the condition of exerting of power, can make whole atress plate 50 atress simultaneously, the atress is more even. More specifically, referring to fig. 1 and 2, in the present embodiment, the counter bores include a first counter bore 51 and a second counter bore 52, the guide rod 80 is fixedly mounted on the force-bearing plate 50 through bolts inserted into the first counter bore 51, and the ram mounting and positioning block 61 in the ram structure 60 is fixedly mounted on the force-bearing plate 50 through bolts inserted into the second counter bore 52.
In order to adjust the extrusion depth of the pressure head structure 60 on the thin-walled circular tube 30, optionally, referring to fig. 7, a plurality of groups of second counter sink holes 52 may be further provided on the stress plate 50, and the distance between each group of second counter sink holes 52 and the central point of the stress plate 50 is unequal, and a plurality of second counter sink holes 52 in the same orientation in the plurality of groups of second counter sink holes 52 are arranged in a straight line. With the arrangement, when the extrusion depth of the pressure head structure 60 to the thin-wall circular tube 30 needs to be adjusted, and the energy absorption effect of the thin-wall circular tube 30 is further adjusted, so as to meet the requirements of different occasions, the pressure head structure 60 only needs to be fixed at the second counter sink 52 of the corresponding group, and the operation is very convenient.
Referring to fig. 1, 3 and 6, in the present embodiment, the end surface of the end of the rib 21 extending outward is preferably an arc surface, and the corner of the end surface of the end of the rib 21 extending outward is also preferably a round corner. By the arrangement, the end face of the rib plate 21 extending outwards can be more fully contacted with the thin-wall round tube 30; the corner of the end face is set to be a round corner (namely, the side edge of the rib plate 21 is subjected to smooth processing), so that the extrusion deformation energy absorption process can be prevented from being influenced by the fact that the side edge of the rib plate 21 scratches the thin-walled circular tube 30.
Referring to fig. 1 and 3, in the present embodiment, the mounting baseplate 10 has a square shape, the guide post 20 has a cross shape, and the rib 21 of the guide post 20 is disposed along a diagonal line of the mounting baseplate 10. This arrangement allows the ram structure 60 to have more ample space for movement.
It should be further noted that, in order to facilitate the assembly between the guide rod 80 and the guide hole 41 and reduce unnecessary friction between the guide rod 80 and the guide hole 41, the diameter of the guide hole 41 should be set slightly larger than the diameter of the guide rod 80; the inner diameter of the thin-walled circular tube 30 is slightly larger than the whole width of the guide post 20, and the thin-walled circular tube 30 is optimally prevented from easily shaking, so that the proper gap is set to be beneficial to the installation and the disassembly of the thin-walled circular tube 30; the width of the rib plate 21 on the guide post 20 can be specifically set according to actual needs, the width of the rib plate 21 is different, and the extrusion force is different, so that the generated energy absorption effect is different; in addition, the number of the ram structures 60, the shape of the ram 62 (including parameters such as the width, the length, the height, the side inclination angle, and the like of the ram 62) and the number of the rib plates 21 on the guide post 20 can be set according to actual conditions, different numbers of deformation grooves are generated on the thin-walled circular tube 30 by different numbers of the ram structures 60 and the rib plates 21, the shape of the ram 62 is different, and the energy absorption effect generated by the thin-walled circular tube 30 is also different.
When the mounting structure is used, the whole mounting structure is mounted on a train through the mounting bottom plate 10, the thin-wall circular tube 30 is sleeved on the guide column 20, collision kinetic energy is loaded on the stress plate 50 when collision occurs, and due to the arrangement of the counter sink, the stress surface of the whole stress plate 50 is positioned in the same plane, so that the force loading end can be in uniform contact with the stress plate 50, and the phenomenon that the stress plate 50 deflects due to nonuniform stress is avoided; the pressure head structure 60, the guide rod 80 and the fixed frame 70 move along the axial direction of the thin-walled circular tube 30 along with the stress plate 50, and the guide rod 80 guides the moving direction of the pressure head structure 60, so that the extrusion direction of the pressure head structure 60 is kept definite; the thin-wall circular tube 30 is pressed inwards along the radial direction of the thin-wall circular tube 30 due to the pressure from the pressure head structure 60, so that the thin-wall circular tube 30 is inwards sunken along the radial direction to form a groove, and the deformed groove is longer and longer along with the continuous downward movement of the pressure head structure 60; in the forming process of the deformation groove, the thin-wall round tube 30 generates plastic deformation and generates friction with the side surface of the ribbed plate 21 of the guide post 20, so that the purpose of absorbing collision kinetic energy is achieved; when the lower end face of the ram structure 60 is about to contact the mounting baseplate 10, the whole extrusion deformation process is finished, and a primary energy absorption stroke is completed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A mounting structure for radial extrusion deformation of a thin-walled circular tube, the mounting structure comprising:
a mounting base plate (10);
the guide post (20) is installed on the installation bottom plate (10), the guide post (20) is provided with a plurality of rib plates (21), and an extrusion deformation area (22) is formed between every two adjacent rib plates (21); the thin-wall round pipe (30) is detachably sleeved on the outer side of the guide post (20);
the upright posts (40) are arranged on the mounting base plate (10), and guide holes (41) are formed in the upright posts (40); the upright columns (40) are arranged on the periphery of the thin-wall circular tube (30);
a stress plate (50);
a plurality of ram structures (60) mounted on the stress plate (50), each ram structure (60) being disposed in correspondence with one of the crush zones (22);
the fixed frame (70) is arranged around the outer sides of the plurality of pressure head structures (60), and the pressure head structures (60) are fixedly arranged on the fixed frame (70);
and the guide rods (80) are arranged on the stress plate (50), and the guide rods (80) penetrate through the guide holes (41).
2. The mounting structure for radial crush deformation of a thin-walled round tube as recited in claim 1, wherein the ram structure (60) comprises:
one end of the pressure head mounting and positioning block (61) is mounted on the stress plate (50) through a bolt, and the other end of the pressure head mounting and positioning block (61) is provided with a first mounting groove (611);
the pressure head (62), the one end of pressure head (62) be equipped with first mounting groove (611) assorted second mounting groove (621), pressure head (62) pass through second mounting groove (621) with first mounting groove (611) interference fit install on pressure head installation locating piece (61), pressure head (62) pass through bolt fixed mounting in on fixed frame (70), the lower extreme of pressure head (62) has the inclined plane that is used for extrudeing thin wall pipe (30).
3. The mounting structure for radial extrusion deformation of the thin-walled circular tube as claimed in claim 2, wherein the pressure head mounting and positioning block (61) is provided with a positioning claw (612) at each end of the first mounting groove (611), and when the pressure head (62) is clamped on the pressure head mounting and positioning block (61), the two positioning claws (612) are respectively clamped at two sides of the pressure head (62).
4. The mounting structure for radial crush deformation of a thin-walled circular tube according to claim 1, wherein the inner corners of the fixing frame (70) are rounded.
5. The mounting structure for radial extrusion deformation of the thin-walled circular tube as claimed in claim 1, wherein the stress plate (50) is provided with a countersunk hole, and the pressure head structure (60) and the guide rod (80) are both mounted on the stress plate (50) through a bolt, and the bolt is arranged in the countersunk hole.
6. The mounting structure for radial extrusion deformation of the thin-walled circular tube as claimed in claim 5, wherein the counter-bored holes comprise a first counter-bored hole (51) and a second counter-bored hole (52), the guide rod (80) is fixedly mounted on the stress plate (50) through bolts penetrating in the first counter-bored hole (51), the pressure head structure (60) is fixedly mounted on the stress plate (50) through bolts penetrating in the second counter-bored hole (52), the stress plate (50) is provided with a plurality of groups of the second counter-bored holes (52), and the distance between each group of the second counter-bored holes (52) and the central point of the stress plate (50) is unequal.
7. The mounting structure for the radial extrusion deformation of the thin-walled circular tube as claimed in any one of claims 1 to 6, wherein the end surface of the end of the rib plate (21) extending outwards is an arc surface, and the corner of the end surface of the end of the rib plate (21) extending outwards is a rounded corner.
8. The mounting structure for radial extrusion deformation of a thin-walled circular tube as claimed in any one of claims 1 to 6, wherein the mounting base plate (10) is square, the guide post (20) is cross-shaped, and the rib plate (21) on the guide post (20) is arranged along a diagonal line of the mounting base plate (10).
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| CN201911410965.7A CN111098879B (en) | 2019-12-31 | 2019-12-31 | A mounting structure for radial extrusion deformation of thin wall pipe |
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| CN201911410965.7A CN111098879B (en) | 2019-12-31 | 2019-12-31 | A mounting structure for radial extrusion deformation of thin wall pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103148144B (en) * | 2013-03-14 | 2015-04-08 | 湖南大学 | Energy absorption device |
| CN103818402B (en) * | 2014-03-13 | 2016-06-01 | 西南交通大学 | Suction for rail traffic vehicles can be prevented climbing device |
| CN105059309B (en) * | 2015-08-04 | 2018-01-23 | 深圳市乾行达科技有限公司 | A kind of external metal tube honeycomb core combined type anticreeper of honeycomb core |
| CN106364521B (en) * | 2016-10-20 | 2018-04-03 | 中南大学 | The special energy absorption device of combined type for rail vehicle and the rail vehicle provided with the device |
| CN207496693U (en) * | 2017-09-25 | 2018-06-15 | 靖江市盛讯信息科技有限公司 | Crash energy absorption equipment used for rail vehicle |
| CN109610667A (en) * | 2018-12-13 | 2019-04-12 | 大连理工大学 | A kind of truss node plate type energy absorption brace |
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