CN117552838A - Mining energy absorber - Google Patents
Mining energy absorber Download PDFInfo
- Publication number
- CN117552838A CN117552838A CN202311649119.7A CN202311649119A CN117552838A CN 117552838 A CN117552838 A CN 117552838A CN 202311649119 A CN202311649119 A CN 202311649119A CN 117552838 A CN117552838 A CN 117552838A
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- Prior art keywords
- energy absorber
- energy
- mining
- rod
- sleeve
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- 238000005065 mining Methods 0.000 title claims abstract description 44
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 31
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 24
- 239000003245 coal Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 230000000149 penetrating effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Vibration Dampers (AREA)
Abstract
The invention provides a mining energy absorber, which relates to the technical field of coal mining safety and aims to solve the problem of insufficient impact resistance. The mining energy absorption device comprises an energy absorption module, wherein the energy absorption module comprises a first elastic piece and a second elastic piece which are arranged in series, and the rigidity of the first elastic piece is larger than that of the second elastic piece. Which may improve the impact resistance.
Description
Technical Field
The invention relates to the technical field of coal mining safety, in particular to a mining energy absorbing device.
Background
Mining equipment and personnel often shift with the mining process and process objects without a fixed process tongue tip. The mined ore body must be tunneled into some roadway to perform mining preparation work to start stoping. Development, mining preparation and stoping work are coordinated with each other. Otherwise, the stripping or the digging is out of balance, resulting in the reduction of the yield of the mine. Some existing anchor rods can reduce impact energy, but have insufficient impact resistance, and potential safety hazards are easily brought to constructors.
Disclosure of Invention
The invention aims to provide a mining energy absorbing device which aims to solve the technical problem that the existing impact resistance is insufficient.
The mining energy absorbing device comprises an energy absorbing module, wherein the energy absorbing module comprises a first elastic piece and a second elastic piece which are arranged in series, and the rigidity of the first elastic piece is larger than that of the second elastic piece.
The mining energy absorbing device has the beneficial effects that:
the rigidity of the first elastic piece is larger than that of the second elastic piece in the energy absorption module, impact with larger displacement can be borne by the first elastic piece, and the second elastic piece is high in space utilization rate due to larger rigidity, larger static load, impact load and dynamic alternating load can be borne by the second elastic piece, the energy absorption module has better fatigue life, and large load can be borne in a smaller space after the first elastic piece absorbs energy to reach a limit state. Therefore, the combination of the first elastic piece and the second elastic piece can adapt to various load situations, and the application range of the mining energy absorption device is improved.
In a preferred technical scheme, the energy-absorbing module comprises an energy-absorbing sleeve and an energy-absorbing rod penetrating through the energy-absorbing sleeve, the energy-absorbing rod can axially slide relative to the energy-absorbing sleeve, the first elastic piece and the second elastic piece are all arranged around the energy-absorbing rod and are all positioned in the energy-absorbing sleeve, and two ends of the energy-absorbing sleeve are provided with radial extension parts so as to directly or indirectly apply axial force to the first elastic piece or the second elastic piece.
Through the energy absorption rod which is arranged on the energy absorption sleeve in a penetrating way and can axially slide with the energy absorption sleeve, the relative motion between the energy absorption sleeve and the energy absorption rod can be utilized, so that the first elastic piece and the second elastic piece are compressed, and the buffer of multistage energy is realized.
In the preferred technical scheme, the both ends of energy-absorbing pole all wear out the tip of energy-absorbing sleeve, the first end of energy-absorbing pole is equipped with first engaging lug, the second end of energy-absorbing pole is equipped with the second engaging lug, the hydraulic cylinder is connected through the link to the second engaging lug.
The first connecting lugs and the second connecting lugs are arranged at the end parts of the energy absorption rods penetrating out of the energy absorption sleeves, so that the first connecting lugs can be used for connecting devices such as anchor rods and ropes, and the second connecting lugs can be used for connecting the hydraulic cylinders.
In the preferred technical scheme, the energy-absorbing module further comprises a ring piece, the ring piece is sleeved on the energy-absorbing rod, one end face of the ring piece abuts against the energy-absorbing sleeve, and the other end face of the ring piece abuts against the first elastic piece.
Through setting up the ring spare between the tip medial surface of first elastic component and energy-absorbing sleeve, can utilize the link to support with first elastic component for the tip medial surface effort that acts on the energy-absorbing sleeve is more even, in order to reduce the possibility of energy-absorbing sleeve damage. If the ring piece is damaged, the ring piece can be directly replaced.
In a preferred technical scheme, the energy absorption rod is provided with a rod body, the rod body is connected with the first connecting lug and the second connecting lug, and the first connecting lug protrudes out of the rod body in the radial direction.
In a preferred technical scheme, the first elastic piece is a cylindrical helical compression spring, and the second elastic piece comprises a plurality of belleville springs.
The first elastic piece is a cylindrical helical compression spring, the second elastic piece comprises a plurality of disc springs, the advantage that the disc springs are large in energy density in space can be utilized to provide larger rigidity, the cylindrical helical compression spring is used as the first elastic piece to bear impact with larger deformation, the impact absorption capacity of the mining energy absorption device is improved, meanwhile, the rigid force born by the whole equipment after impact can be protected, and the flexibility of the system is improved.
In a preferred embodiment, the second elastic member includes disc springs having different sizes.
By selecting the disc springs with different sizes, different spring characteristics can be utilized to form different spring integral stiffness curves so as to adapt to the impact loading situation.
In a preferred embodiment, a ratio of a truncated cone height in a disk of a part of the disc springs to a disk thickness is different from the rest of the disc springs.
By arranging the belleville springs in such a way that the ratio of the height of the truncated cone in the disc to the thickness of the disc is different, it is possible to obtain different elastic characteristics of the whole formed by the belleville springs, such as linear, increasing, decreasing or a combination thereof. In addition, the variable stiffness characteristic can be obtained by combining disc springs with different thicknesses or combining different numbers of sheets.
In the preferred technical scheme, mining energy-absorbing device includes pneumatic cylinder, link and first coupling assembling, second coupling assembling, first coupling assembling with the second coupling assembling all includes U-shaped round pin and straight-bar round pin, the U-shaped round pin connect in the link, straight-bar round pin connect in the pneumatic cylinder or energy-absorbing module.
The U-shaped pin and the straight rod pin are connected with the hydraulic cylinder or the energy absorption module, so that the connection of the front end of the hydraulic cylinder with multiple degrees of freedom is realized, and the hydraulic cylinder is favorable for bearing external impact force.
In a preferred technical scheme, the connecting chain comprises a plurality of mining circular ring chain links.
The mining ring chain link has high strength, and is not easy to damage by using the mining ring chain link as a connecting mechanism.
Drawings
In order to more clearly illustrate the technical solutions of embodiments or background art of the present invention, the drawings that are needed in the description of the embodiments or background art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a mining energy absorber provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of a partial structure of a mining energy absorber according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a hydraulic cylinder in a mining energy absorber provided by an embodiment of the invention;
reference numerals illustrate:
100-an energy absorption module; 110-a first elastic member; 120-a second elastic member; 130-energy absorbing rod; 131-first connection lugs; 132-a second connecting ear; 133-a lever body; 140-an energy absorbing sleeve; 150-ring member;
200-hydraulic cylinders; 300-connecting chain; 400-a first connection assembly; 410-U-shaped pins; 420-straight bar pin; 500-a second connection assembly.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. 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 invention.
Embodiment one:
FIG. 1 is a schematic structural diagram of a mining energy absorber provided by an embodiment of the present invention; FIG. 2 is a schematic diagram of a partial structure of a mining energy absorber according to an embodiment of the present invention; as shown in fig. 1 and fig. 2, the mining energy absorbing device provided by the first embodiment of the invention includes an energy absorbing module 100, wherein the energy absorbing module 100 includes a first elastic member 110 and a second elastic member 120 which are arranged in series, and the rigidity of the first elastic member 110 is greater than the rigidity of the second elastic member 120.
In this embodiment, the first elastic member 110 and the second elastic member 120 are not limited to the first elastic member 110 and the second elastic member 120 are only separate elastic members, and the first elastic member 110 and the second elastic member 120 may be a set of elastic members with the same shape, the same size or different sizes.
By arranging the first elastic element 110 with the rigidity larger than that of the second elastic element 120 in the energy absorption module 100, the impact with larger displacement can be borne by the first elastic element 110, and the second elastic element 120 has higher space utilization rate because of the larger rigidity, so that the second elastic element 120 can bear larger static load, impact load and dynamic alternating load, has better fatigue life, and can bear larger load in a smaller space after the first elastic element 110 absorbs energy to reach a limit state. Therefore, the combination of the first elastic piece 110 and the second elastic piece 120 can adapt to various load situations, and the application range of the mining energy absorption device is improved.
As shown in fig. 1 and 2, preferably, the energy absorbing module 100 includes an energy absorbing sleeve 140 and an energy absorbing rod 130 penetrating the energy absorbing sleeve 140, the energy absorbing rod 130 is capable of axially sliding relative to the energy absorbing sleeve 140, the first elastic member 110 and the second elastic member 120 are both disposed around the energy absorbing rod 130 and both are located in the energy absorbing sleeve 140, and both ends of the energy absorbing sleeve 140 have radially inward extending portions to directly or indirectly apply an axial force to the first elastic member 110 or the second elastic member 120.
The energy absorbing rod 130 includes a rod body 133, which is described later, and the first elastic member 110 and the second elastic member 120 may be disposed on the rod body 133 in a sleeved manner, or may also be in a form of a plurality of individual elastic elements circumferentially distributed.
Specifically, the side walls of both ends of the energy absorbing sleeve 140 are provided with through holes, which can allow the energy absorbing rod 130 to pass through and allow the energy absorbing rod 130 to axially slide relative to the energy absorbing sleeve 140.
By providing the energy absorbing rod 130 penetrating the energy absorbing sleeve 140 and axially sliding therewith, the relative movement between the energy absorbing sleeve 140 and the energy absorbing rod 130 can be utilized to compress the first elastic member 110 and the second elastic member 120 to achieve multi-stage energy buffering.
As shown in fig. 2 and 3, preferably, both ends of the energy absorbing rod 130 penetrate out of the end of the energy absorbing sleeve 140, a first end of the energy absorbing rod 130 is provided with a first connecting lug 131, a second end of the energy absorbing rod 130 is provided with a second connecting lug 132, and the second connecting lug 132 is connected to the hydraulic cylinder 200 through a connecting chain 300.
In this embodiment, the two ends of the energy absorbing rod 130 penetrate out of the ends of the energy absorbing sleeve 140, which means that when the installation is completed, the ends of the energy absorbing rod 130 penetrate out of the ends of the energy absorbing sleeve 140 correspondingly, but not necessarily after sliding to a certain position, and when sliding to other positions in a normal use state, the ends of the energy absorbing rod 130 are located inside the energy absorbing sleeve 140. Wherein, the second connecting lug 132 may be an end of the energy-absorbing rod 130 at the second end, and is consistent with the shape of the rod body 133, and only a radial through hole is provided on the energy-absorbing rod 130, so that a straight rod pin 420 described later passes through
Specifically, in an implementation manner not shown in the present embodiment, an end cap may be disposed at one end of the energy absorbing sleeve 140, and is connected to the sleeve portion through a threaded connection manner, so as to ensure convenience of installation.
By providing the first connecting lug 131 and the second connecting lug 132 at the end of the energy-absorbing rod 130 penetrating the energy-absorbing sleeve 140, the first connecting lug 131 can be used for connecting devices such as an anchor rod cable, and the second connecting lug 132 can be used for connecting the hydraulic cylinder 200.
As shown in fig. 2, preferably, the energy absorbing module 100 further includes a ring member 150, the ring member 150 is sleeved on the energy absorbing rod 130, one end surface of the ring member 150 abuts against the energy absorbing sleeve 140, and the other end surface of the ring member 150 abuts against the first elastic member 110.
In this embodiment, the cross section of the ring member 150 may be rectangular, that is, two end surfaces of the ring member 150 are disposed in parallel, and an inner circumferential surface of the ring member 150 may be matched with an outer circumferential surface of the energy absorbing rod 130, and the ring member 150 may slide axially relative to the energy absorbing rod 130.
By disposing the ring member 150 between the first elastic member 110 and the inner side surface of the end portion of the energy-absorbing sleeve 140, the ring member can be abutted against the first elastic member 110, so that the inner side surface acting force on the end portion of the energy-absorbing sleeve 140 is more uniform, and the possibility of damage to the energy-absorbing sleeve 140 is reduced. If the ring 150 is damaged, the ring 150 may be directly replaced.
As shown in fig. 2, preferably, the energy absorbing rod 130 has a rod body 133, the rod body 133 connects the first and second connection lugs 131 and 132, and the first connection lug 131 protrudes from the rod body 133 in a radial direction.
The beam body 133 may be a cylindrical beam, and a cross section of the first connection lug 131 perpendicular to the axis of the energy absorbing beam 130 may be a rectangular cross section, which is larger than a circular cross section of the beam body 133, so that the first connection lug 131 protrudes from the beam body 133 in a radial direction. The beam body 133 is fitted with a hole provided on an end surface of the energy absorbing sleeve 140, so that the first connection lug 131 protrudes radially from the beam body 133, which may enable the first connection lug 131 to have the ability to block the movement of the energy absorbing beam 130 in the axial direction toward the second connection lug 132, so that the energy absorbing beam 130 can be located in the energy absorbing sleeve 140 without being separated from the energy absorbing sleeve 140.
As shown in fig. 2, preferably, the first elastic member 110 is a cylindrical helical compression spring, and the second elastic member 120 includes a plurality of belleville springs.
In this embodiment, the first elastic member 110 is a cylindrical helical compression spring, and the second elastic member 120 includes a plurality of belleville springs axially sleeved on the energy absorbing rod 130.
The first elastic member 110 is a cylindrical helical compression spring, and the second elastic member 120 comprises a plurality of disc springs, so that the advantage of large energy density of the disc springs in space can be utilized to provide larger rigidity, and the cylindrical helical compression spring is used as the first elastic member 110 to bear larger deformation impact, so that the impact absorption capability of the mining energy absorption device is improved, the rigid force born by the whole equipment after impact can be protected, and the flexibility of the system is improved.
As shown in fig. 2, the second elastic member 120 preferably includes disc springs having different sizes.
By selecting the disc springs with different sizes, different spring characteristics can be utilized to form different spring integral stiffness curves so as to adapt to the impact loading situation.
As shown in fig. 2, it is preferable that the ratio of the height of the truncated cone in the disk of a part of the disc springs to the thickness of the disk is different from the rest of the disc springs.
By arranging the belleville springs in such a way that the ratio of the height of the truncated cone in the disc to the thickness of the disc is different, it is possible to obtain different elastic characteristics of the whole formed by the belleville springs, such as linear, increasing, decreasing or a combination thereof. In addition, the variable stiffness characteristic can be obtained by combining disc springs with different thicknesses or combining different numbers of sheets.
As shown in fig. 1 and 3, the mining energy absorbing device preferably comprises a hydraulic cylinder 200, a connecting chain 300, a first connecting assembly 400 and a second connecting assembly 500, wherein each of the first connecting assembly 400 and the second connecting assembly 500 comprises a U-shaped pin 410 and a straight bar pin 420, the U-shaped pin 410 is connected to the connecting chain 300, and the straight bar pin 420 is connected to the hydraulic cylinder 200 or the energy absorbing module 100.
In this application, through holes are radially formed at two ends of the straight rod pin 420, and the cotter pin can be penetrated into the through holes, so that after the cotter pin is opened, the straight rod pin 420 and the connecting lug of the piston rod of the hydraulic cylinder 200 or the second connecting lug 132 of the energy absorption module 100 can be axially positioned, so as to prevent the straight rod pin 420 from being separated from the U-shaped pin 410. The strength of the straight bar pin 420 is smaller than that of the connecting chain 300, so that the operation process can be adjusted in time after the straight bar pin is bent, and the safety of the hydraulic cylinder 200 and the connecting chain 300 is protected.
The U-shaped pin 410 and the straight rod pin 420 are connected with the hydraulic cylinder 200 or the energy absorption module 100, so that the connection with multiple degrees of freedom of the front end of the hydraulic cylinder 200 is realized, and the hydraulic cylinder is favorable for bearing external impact force.
As shown in fig. 1 and 2, the connecting chain 300 preferably includes a plurality of mining ring links.
The mining ring chain link has high strength, and is not easy to damage by using the mining ring chain link as a connecting mechanism.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the above embodiments, descriptions of orientations such as "up", "down", and the like are shown based on the drawings.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The mining energy absorbing device is characterized by comprising an energy absorbing module (100), wherein the energy absorbing module (100) comprises a first elastic piece (110) and a second elastic piece (120) which are arranged in series, and the rigidity of the first elastic piece (110) is larger than that of the second elastic piece (120).
2. The mining energy absorber of claim 1, wherein the energy absorber module (100) comprises an energy absorber sleeve (140) and an energy absorber rod (130) disposed through the energy absorber sleeve (140), the energy absorber rod (130) being axially slidable relative to the energy absorber sleeve (140), the first elastic member (110) and the second elastic member (120) being disposed around the energy absorber rod (130) and both being disposed in the energy absorber sleeve (140), both ends of the energy absorber sleeve (140) having radially inward extensions to apply an axial force directly or indirectly to the first elastic member (110) or the second elastic member (120).
3. The mining energy absorber according to claim 2, characterized in that both ends of the energy absorbing rod (130) penetrate out of the end part of the energy absorbing sleeve (140), a first end of the energy absorbing rod (130) is provided with a first connecting lug (131), a second end of the energy absorbing rod (130) is provided with a second connecting lug (132), and the second connecting lug (132) is connected with the hydraulic cylinder (200) through a connecting chain (300).
4. A mining energy absorber according to claim 3, characterized in that the energy absorber module (100) further comprises a ring member (150), the ring member (150) is sleeved on the energy absorber rod (130), one end surface of the ring member (150) abuts against the energy absorber sleeve (140), and the other end surface of the ring member (150) abuts against the first elastic member (110).
5. A mining energy absorber according to claim 3, characterized in that the energy absorbing strut (130) has a strut body (133), the strut body (133) connecting the first connecting lug (131) and the second connecting lug (132), the first connecting lug (131) protruding radially from the strut body (133).
6. The mining energy absorber according to claim 1, wherein the first resilient member (110) is a cylindrical helical compression spring and the second resilient member (120) comprises a plurality of belleville springs.
7. The mining energy absorber of claim 6, wherein the second resilient (120) member comprises different sized belleville springs.
8. The mining energy absorber of claim 6, wherein a portion of said belleville springs have a ratio of an intra-disc truncated cone height to a disc thickness that is different from the remaining belleville springs.
9. The mining energy absorber of any of claims 1-6, characterized in that the mining energy absorber comprises a hydraulic cylinder (200), a connecting chain (300) and a first connecting assembly (400), a second connecting assembly (500), the first connecting assembly (400) and the second connecting assembly (500) each comprising a U-shaped pin (410) and a straight bar pin (420), the U-shaped pin (410) being connected to the connecting chain (300), the straight bar pin (420) being connected to the hydraulic cylinder (200) or the energy absorber module (100).
10. The mining energy absorber of claim 7, wherein the connecting chain (300) comprises a plurality of mining ring links.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311649119.7A CN117552838A (en) | 2023-12-04 | 2023-12-04 | Mining energy absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311649119.7A CN117552838A (en) | 2023-12-04 | 2023-12-04 | Mining energy absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117552838A true CN117552838A (en) | 2024-02-13 |
Family
ID=89810890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311649119.7A Pending CN117552838A (en) | 2023-12-04 | 2023-12-04 | Mining energy absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117552838A (en) |
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2023
- 2023-12-04 CN CN202311649119.7A patent/CN117552838A/en active Pending
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