CN219081629U - Ultra-compact quick-change type multistage anti-impact energy-absorbing device - Google Patents
Ultra-compact quick-change type multistage anti-impact energy-absorbing device Download PDFInfo
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- CN219081629U CN219081629U CN202320008078.2U CN202320008078U CN219081629U CN 219081629 U CN219081629 U CN 219081629U CN 202320008078 U CN202320008078 U CN 202320008078U CN 219081629 U CN219081629 U CN 219081629U
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Abstract
The utility model discloses an ultra-compact quick-change type multistage anti-impact energy-absorbing device, which comprises a guide rod; the upper end of the pressurizing cone is coaxially provided with a first conical surface and a second conical surface, and a pressurizing cone annular groove is arranged between the first conical surface and the second conical surface; the first reducing pipe and the second reducing pipe are coaxially sleeved between the guide rod and the pressurizing cone; the upper ends of the first reducer pipe and the second reducer pipe are abutted to the lower end of the guide rod, and the lower ends of the first reducer pipe and the second reducer pipe are respectively matched with and abutted to the first conical surface and the second conical surface. Compared with the prior art, the utility model has the beneficial effects that: the axial impact force is absorbed by the structure mode of parallel connection and diameter variation of the multistage reducing pipes, and the axial impact force absorbing device has the advantages of compact structure, stable energy absorbing capacity and convenience in replacement.
Description
Technical Field
The utility model belongs to the field of coal mine roadway impact-resistant support, and particularly relates to an ultra-compact quick-change type multistage impact-resistant energy-absorbing device.
Background
Hydraulic supports are commonly adopted for supporting coal mining working faces in coal mines, and are used for protecting mining area personnel and equipment, and are important elements of coal mine supporting equipment. The upright post is an executive component of the hydraulic support system, provides strong supporting force and bears rock burst, and the anti-impact performance of the upright post plays a decisive role in coal mine production safety.
Rock burst refers to a dynamic phenomenon of sudden and severe damage of coal (rock) bodies around a coal mine roadway or a working surface due to instantaneous release of elastic deformation energy, and is often accompanied by instantaneous displacement, throwing, ringing, air waves and the like of the coal (rock) bodies. The rock burst is a main cause for causing the integral failure of the hydraulic support, after the support is subjected to the load of the rock burst, the emulsion pressure in the rigidly connected upright post is rapidly increased, and the system overflow valve cannot immediately act and unload due to the influence of factors such as the inertia of a valve core, friction and the like, so that the failure phenomena such as cylinder burst, sealing damage, upright post bending and the like are extremely easy to occur under the action of the impact pressure, and safety accidents are caused. Therefore, the energy absorption performance of the support upright is particularly critical.
The current impact-resistant and energy-absorbing designs can be roughly divided into two categories: one is to utilize plastic deformation energy absorption of the material, and connect energy absorption materials (such as foamed aluminum, aluminum honeycomb, etc.) in series in the stress direction of the upright post, such energy absorption mode is limited by the mechanical property of the material when the trigger force is large, and the radial and axial design size is often too large, which is not beneficial to installation and disassembly. The other is to remove materials, such as the reaction force generated in the process of removing materials by planing cylindrical surfaces, shearing threads and the like is used for absorbing energy, and the device has compact structure, but the fluctuation of the force value in the energy absorption process is larger and is not easy to control.
Disclosure of Invention
The details of one or more embodiments of the utility model are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the other features, objects, and advantages of the present application.
The utility model provides an ultra-compact quick-change type multi-stage impact-resistant energy-absorbing device, which realizes the absorption of axial impact force in a multi-stage parallel variable-diameter structure mode and has the advantages of compact structure, stable energy-absorbing capacity value and convenience in replacement.
The utility model discloses an ultra-compact quick-change type multistage anti-impact energy-absorbing device, which comprises:
a guide rod;
the upper end of the pressurizing cone is coaxially provided with a first conical surface and a second conical surface, and a pressurizing cone annular groove is arranged between the first conical surface and the second conical surface;
the first reducing pipe and the second reducing pipe are coaxially sleeved between the guide rod and the pressurizing cone; the straight pipe parts of the first reducing pipe and the second reducing pipe are abutted to the lower end of the guide rod, and the reducing parts of the first reducing pipe and the second reducing pipe are respectively matched with and abutted to the first conical surface and the second conical surface.
In some embodiments, the guide rod is provided with a first guide rod ring groove and a second guide rod ring groove respectively in contact with the first reducer pipe and the second reducer pipe.
In some embodiments, the diameter-reducing parts of the lower ends of the first reducing pipe and the second reducing pipe are of expanded diameter structures.
In some embodiments, the first taper and the second taper are of equal inclination.
In some embodiments, the guide bar is provided with a central shaft; the pressurizing cone is of an inner hollow structure and is provided with an opening at the upper end; the central shaft is matched with the opening and penetrates through the opening.
In some embodiments, the aperture size of the opening is smaller than the inner diameter size of the hollow structure within the pressurizing cone; and a nut is connected with the central shaft of the hollow structure in the pressurizing cone in a threaded manner.
In some embodiments, a clamping groove is formed on the periphery of the lower end of the nut; a clamping key is arranged on the end face of the lower end of the central shaft; an anti-loosening plate is arranged between the clamping groove and the clamping key, and is fixed at the lower end of the central shaft through a locking bolt.
In some embodiments, the snap key is in a cross-shaped structure; the clamping grooves are formed in a plurality of and uniformly distributed on the periphery of the lower end of the nut.
In some embodiments, the upper end of the guide rod is provided with a radial hole; the lower extreme of pressurization awl is equipped with the connecting bolt hole.
In some embodiments, the pressurized conical annular groove has a width greater than the thickness of the first reducer pipe; the thickness of the first reducer pipe is consistent with that of the second reducer pipe.
Compared with the prior art, the utility model has the following beneficial effects:
1. the deformation force generated by the synchronous reducing action of the multi-stage or double-stage reducing pipe is utilized to absorb the impact of the axial force, and compared with a single reducing energy-absorbing form, the device can bear larger axial force, so that the problem that the pipe wall is easy to generate brittle fracture in the action process and absorption failure is caused due to overlarge wall thickness when the single traditional energy-absorbing form is designed is avoided.
2. The structure design of the two-stage expanding deformation is adopted, under the limitation of the outer diameter size and the wall thickness deformation, the impact force value of the bearing force can be effectively increased, and meanwhile, compared with the structure of external expansion and internal compression, the axial space can be further reduced, the connecting structure is simplified, and the whole structure is more compact.
3. The structural design of the single pressurizing cone and the pressurizing cone annular groove provides enough compression space for the two-stage parallel expansion reducer pipe, and ensures the synchronism of the two-stage expansion deformation process.
4. The metal plastic deformation is adopted to absorb the axial acting force, the energy absorption process is stable in force value and small in fluctuation.
5. And the modularized design is adopted, so that the maintenance and replacement are easy, and the maintenance cost is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model.
Fig. 1 is a schematic view of the internal structure of the present utility model.
Fig. 2 is a schematic perspective view of an external structure of the present utility model.
Fig. 3 is a schematic diagram of a connection structure of a card key and a card slot according to the present utility model.
Description of the drawings: guide rod 1, pressure cone 2, first conical surface 3, second conical surface 4, first reducing pipe 5, second reducing pipe 6, pressure cone annular groove 7, nut 8, guide rod first annular groove 9, guide rod second annular groove 10, anti-loosening plate 11, lockbolt 12, clamping key 13, clamping groove 14.
Detailed Description
The present utility model will be described and illustrated with reference to the accompanying drawings and examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided by the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
It is apparent that the drawings in the following description are only some examples or embodiments of the present utility model, and it is possible for those of ordinary skill in the art to apply the present utility model to other similar situations according to these drawings without inventive effort. Moreover, it should be appreciated that while such a development effort might be complex and lengthy, it would nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as having the benefit of this disclosure.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly and implicitly understood by those of ordinary skill in the art that the described embodiments of the utility model can be combined with other embodiments without conflict.
Example 1:
referring to fig. 1, an ultra-compact quick-change multi-stage impact-resistant energy-absorbing device comprises: the guide rod 1, the pressurizing cone 2, the first reducer pipe 5 and the second reducer pipe 6; the upper end of the pressurizing cone 2 is coaxially provided with a first conical surface 3 and a second conical surface 4, and a pressurizing cone annular groove 7 is arranged between the first conical surface 3 and the second conical surface 4; the first reducing pipe 5 and the second reducing pipe 6 are coaxially sleeved between the guide rod 1 and the pressurizing cone 2; the straight pipe parts at the upper ends of the first reducing pipe 5 and the second reducing pipe 6 are abutted against the lower end of the guide rod 1, and the reducing parts at the lower ends of the first reducing pipe 5 and the second reducing pipe 6 are respectively matched with and abutted against the first conical surface 3 and the second conical surface 4.
The upper end of the guide rod 1 is provided with a radial hole for installing a pin shaft so as to be integrally hinged with the hydraulic support; the lower extreme of the pressurizing awl 2 is provided with a connecting bolt hole which is fastened with a stand column piston rod of the hydraulic support through a connecting bolt, and meanwhile, the pressurizing awl 2 can also be connected with the stand column piston rod in an axial mode of a clamping ring.
When the device is installed, the first reducer pipe 5 and the second reducer pipe 6 are installed between the guide rod 1 and the pressurizing cone 2, a certain pressure is applied, and the connection of the four is realized through extrusion. When the device is used, the pressurizing cone 2 receiving the impact force simultaneously generates extrusion force on the first reducer pipe 5 and the second reducer pipe 6, the first reducer pipe 5 and the second reducer pipe 6 deform under the action of the extrusion force, and meanwhile, the pressurizing cone annular groove 7 provides enough compression space, so that the synchronous performance of the two-stage reducing process is ensured.
Further, as shown in fig. 1, to improve the stability of the installation process of the first reducer pipe 5 and the second reducer pipe 6, in some embodiments, the guide rod 1 is provided with a first guide rod ring groove 9 and a second guide rod ring groove 10, so as to facilitate the clamping connection with the upper ends of the first reducer pipe 5 and the second reducer pipe 6.
Further, as shown in fig. 1, in order to improve the compactness of the apparatus structure and simplify the structure, in some embodiments, the diameter-variable parts of the lower ends of the first and second reducing pipes 5 and 6 are each formed in an expanded-diameter structure, so that the pressurizing cone annular groove 7 provides a compressing space for the first reducing pipe 5 and the second reducing pipe 6 provides a compressing space through the outer space of the pressurizing cone 2 when receiving the pressurizing impact. So that the two are not affected each other, thereby ensuring the stability and reliability of the device structure.
Further, as shown in fig. 1, to ensure the uniformity and stability of the stress, in some embodiments, the first conical surface 3 and the second conical surface 4 have equal inclination angles, so that the deformation of the first reducer pipe 5 and the second reducer pipe 6 is substantially consistent.
Further, as shown in fig. 1, to ensure stability of force transmission when receiving impact force, in some embodiments, a central shaft is provided on the guide rod 1; the pressurizing cone 2 is of an inner hollow structure and is provided with an opening at the upper end; the central shaft is matched with the opening and penetrates through the opening. Through the structure cooperation of center pin and opening to realize the effect of direction.
Further, to improve the stability of the device in use, as shown in fig. 1, in some embodiments, the size of the aperture is smaller than the size of the inner diameter of the hollow structure within the pressure cone 2; a nut 8 is connected on the central shaft of the hollow structure in the pressurizing cone 2 in a threaded manner.
Because the first reducer pipe 5, the second reducer pipe 6, the guide rod 1 and the pressurizing cone 2 are connected and fixed through certain metal deformation generated by extrusion force during preliminary connection, the tensile property and the connection reliability of the first reducer pipe 5, the second reducer pipe 6, the guide rod 1 and the pressurizing cone 2 are lower, and the connection relationship among the first reducer pipe 5, the second reducer pipe 6, the guide rod 1 and the pressurizing cone 2 is more reliable and has certain tensile resistance by adding the nut 8.
Further, as shown in fig. 1 and 3, in order to improve the reliability of the nut installation, in some embodiments, a clamping groove 14 is provided on the outer periphery of the lower end of the nut 8; a clamping key 13 is arranged on the end face of the lower end of the central shaft; an anti-loosening plate 11 is arranged between the clamping groove 14 and the clamping key 13, and the anti-loosening plate 11 is fixed at the lower end of the central shaft through a check bolt 12. The nut 8 is not very reliable in a single threaded connection mode, and the phenomenon of loosening of threads is easy to occur. Therefore, radial locking of the nut 8 is achieved through the connection relation structure among the clamping groove 14, the clamping key 13 and the anti-loosening plate 11, so that safety and reliability are improved. Further, the clamping key 13 is preferably in a cross structure; the clamping grooves 14 are provided in plurality and uniformly distributed on the periphery of the lower end of the nut 8.
Further, in some embodiments, in order to ensure that the first reducer pipe 5 smoothly and reliably enters the pressurizing conical annular groove 7, the width of the pressurizing conical annular groove 7 is designed to be larger than the thickness of the first reducer pipe 5, and meanwhile, the thicknesses of the first reducer pipe 5 and the second reducer pipe 6 are consistent, so that energy absorption is more balanced.
Example 2:
the specific difference between example 2 and example 1 is that: the pressurizing cone 2 with the original single structure adopts split structural design, the pressurizing cone is changed into a first pressurizing cone and a second pressurizing cone, the first conical surface 3 and the second conical surface 4 are respectively arranged on the first pressurizing cone and the second pressurizing cone, the first pressurizing cone and the second pressurizing cone can be connected through interference fit and bolts, and meanwhile, the pressurizing cone annular groove 7 is also formed between the first pressurizing cone and the second pressurizing cone, so that the first reducing pipe 5 is ensured to have enough compression space. By adopting the split structural design, the complexity of the connecting structure is increased, but the processing and the manufacturing of parts are facilitated.
The working principle is as follows;
during installation, the first reducer pipe 5 and the second reducer pipe 6 are sleeved and respectively clamped and embedded on the first ring groove 9 of the guide rod and the second ring groove 10 of the guide rod 1, then the central shaft of the guide rod 1 is inserted into the opening of the pressurizing cone 2, at the moment, the first reducer pipe 5, the second reducer pipe 6, the guide rod 1 and the pressurizing cone 2 are fastened and connected by applying certain extrusion force to the guide rod 1 and the pressurizing cone 2, and then the anti-loosening plate 11 is installed through the screw-in nut 8, and the anti-loosening bolt 12 is driven into the device to complete the installation operation of the device.
When in use, the guide rod is connected with the matched structural component through the radial hole at the upper end of the guide rod 1 and the connecting bolt hole at the lower end of the pressurizing cone 2. When the impact is applied, the first reducer pipe 5 and the second reducer pipe 6 are synchronously expanded and deformed in double parallel, the deformed part of the first reducer pipe 5 enters the pressurizing conical annular groove 7, and the deformed part of the second reducer pipe 6 is directly expanded outside the pressurizing cone 2.
Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. An ultra-compact quick-change multi-stage impact-resistant energy-absorbing device, comprising:
a guide rod;
the upper end of the pressurizing cone is coaxially provided with a first conical surface and a second conical surface, and a pressurizing cone annular groove is arranged between the first conical surface and the second conical surface;
the first reducing pipe and the second reducing pipe are coaxially sleeved between the guide rod and the pressurizing cone; the straight pipe parts at the upper ends of the first reducing pipe and the second reducing pipe are abutted to the lower end of the guide rod, and the reducing parts at the lower ends of the first reducing pipe and the second reducing pipe are respectively matched with and abutted to the first conical surface and the second conical surface.
2. The ultra-compact quick-change multi-stage impact-resistant energy-absorbing device according to claim 1, wherein the guide rod is respectively provided with a first guide rod ring groove and a second guide rod ring groove, which are abutted against the first reducer pipe and the second reducer pipe.
3. The ultra-compact quick-change type multistage impact-resistant energy-absorbing device according to claim 1, wherein the reducing parts at the lower ends of the first reducing pipe and the second reducing pipe are of expanded-diameter structures.
4. The ultra-compact quick change multi-stage impact absorbing device of claim 1, wherein the first and second tapered surfaces have equal angles of inclination.
5. The ultra-compact quick-change type multistage impact-resistant energy-absorbing device according to claim 1, wherein a central shaft is arranged on the guide rod; the pressurizing cone is of an inner hollow structure and is provided with an opening at the upper end; the central shaft is matched with the opening and penetrates through the opening.
6. The ultra-compact quick change multi-stage impact energy absorber according to claim 5, wherein the aperture size of the opening is smaller than the inner diameter size of the hollow structure in the pressurizing cone; and a nut is connected with the central shaft of the hollow structure in the pressurizing cone in a threaded manner.
7. The ultra-compact quick-change type multistage impact-resistant energy-absorbing device according to claim 6, wherein a clamping groove is formed in the periphery of the lower end of the nut; a clamping key is arranged on the end face of the lower end of the central shaft; an anti-loosening plate is arranged between the clamping groove and the clamping key, and is fixed at the lower end of the central shaft through a locking bolt.
8. The ultra-compact quick change multi-stage impact resistant energy absorber according to claim 7, wherein the snap-fit is of a cross-shaped configuration; the clamping grooves are formed in a plurality of and uniformly distributed on the periphery of the lower end of the nut.
9. The ultra-compact quick-change type multistage impact-resistant energy-absorbing device according to claim 1, wherein the upper end of the guide rod is provided with a radial hole; the lower extreme of pressurization awl is equipped with the connecting bolt hole.
10. The ultra-compact quick change multi-stage impact energy absorber of claim 1, wherein the width of the pressurized conical annular groove is greater than the thickness of the first reducer pipe; the thickness of the first reducer pipe is consistent with that of the second reducer pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320008078.2U CN219081629U (en) | 2023-01-03 | 2023-01-03 | Ultra-compact quick-change type multistage anti-impact energy-absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320008078.2U CN219081629U (en) | 2023-01-03 | 2023-01-03 | Ultra-compact quick-change type multistage anti-impact energy-absorbing device |
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| Publication Number | Publication Date |
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| CN219081629U true CN219081629U (en) | 2023-05-26 |
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| CN202320008078.2U Active CN219081629U (en) | 2023-01-03 | 2023-01-03 | Ultra-compact quick-change type multistage anti-impact energy-absorbing device |
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| CN (1) | CN219081629U (en) |
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- 2023-01-03 CN CN202320008078.2U patent/CN219081629U/en active Active
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