Expansion device and expansion device

Abstract

The invention relates to the technical field of rock mining, in particular to a spalling device and a spalling device. The spalling device comprises a center rod and an expansion piece, the center rod is provided with a medium channel, the expansion piece is arranged on at least part of the peripheral face of the center rod in a sleeving mode, a sealing cavity is formed between the expansion piece and the peripheral face of the center rod, and the sealing cavity is communicated with the medium channel. And the expansion piece is configured to enable at least part of the expansion piece to move in the direction away from the center rod when the sealing cavity is filled with a medium. The spalling device provided by the invention is relatively high in safety, does not cause damage to the body of a constructor, and can be recycled, so that the cost of multiple spalling can be reduced, and meanwhile, the spalling construction difficulty and construction time of rocks and / or mineral products can be reduced by utilizing the spalling device, and the construction efficiency is improved. In addition, the spalling device is wide in application range and high in environmental adaptability.

Description

Technical Field

[0001] The present disclosure relates to the technical field of rock and ore mining, and particularly to a splitting device and a splitting apparatus. Background Art

[0002] Currently, in the technical field of rock and ore mining, when mining rocks and / or minerals, it is necessary to pre-crack and cut the roof of the mined-out area. In the prior art, blasting, hydraulic pre-cracking, CO2 pre-cracking and other methods are generally used to pre-crack and cut the roof of the mined-out area. However, the use of blasting will cause problems such as air pollution, the use of hydraulic pre-cracking will cause problems such as waste of water resources, and the use of CO2 pre-cracking will cause problems such as greater technical construction difficulty.

[0003] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0004] The purpose of the present disclosure is to provide a splitting device and a splitting apparatus, which have high safety, low splitting cost, small construction difficulty, wide application range and strong environmental adaptability.

[0005] The present disclosure provides a splitting device, comprising: A central rod having a medium channel; An expansion member sleeved on at least a part of the outer peripheral surface of the central rod, and a sealing chamber is formed between the expansion member and the outer peripheral surface of the central rod, and the sealing chamber is communicated with the medium channel; the expansion member is configured to move at least a part of the expansion member away from the central rod when the sealing chamber is filled with a medium.

[0006] In an exemplary embodiment of the present disclosure, the expansion member includes: A deformation element sleeved on at least a part of the outer peripheral surface of the central rod, and the sealing chamber is located between the deformation element and the outer peripheral surface of the central rod; A splitting element disposed on a side of the deformation element away from the central rod; Wherein, when the sealing chamber is filled with the medium, at least a part of the deformation element can push the splitting element to move away from the axis direction of the central rod.

[0007] In an exemplary embodiment of the present disclosure, the deformation element is disposed around the outer peripheral surface of the central rod, and the splitting element is disposed around the outer peripheral surface of the deformation element.

[0008] In an exemplary embodiment of the present disclosure, in the circumferential direction of the central rod, the outer peripheral surface of the deformation element has a first outer peripheral portion and a second outer peripheral portion, and the bursting element includes: Extrusion blocks surrounding the first outer peripheral portion; Expansion members surrounding the second outer peripheral portion, and both ends of the expansion members in the circumferential direction are respectively connected to both ends of the extrusion blocks in the circumferential direction.

[0009] In an exemplary embodiment of the present disclosure, the first outer peripheral portion includes at least two first sub-outer peripheral portions, the second outer peripheral portion includes at least two second sub-outer peripheral portions, and there is one second sub-outer peripheral portion between any two of the first sub-outer peripheral portions; The extrusion blocks include at least two sub-extrusion blocks, and the at least two sub-extrusion blocks correspond to the at least two first sub-outer peripheral portions, and each sub-extrusion block surrounds the corresponding first sub-outer peripheral portion; The expansion members include at least two sub-expansion members, and the at least two sub-expansion members correspond to the at least two second sub-outer peripheral portions, and each sub-expansion member surrounds the corresponding second sub-outer peripheral portion, and both ends of each sub-expansion member are respectively connected to two adjacent sub-extrusion blocks.

[0010] In an exemplary embodiment of the present disclosure, the first outer peripheral portion includes two first sub-outer peripheral portions, the second outer peripheral portion includes two second sub-outer peripheral portions, and the two first sub-outer peripheral portions are disposed opposite to each other; The extrusion blocks include two sub-extrusion blocks, and the two sub-extrusion blocks respectively surround one of the first sub-outer peripheral portions.

[0011] In an exemplary embodiment of the present disclosure, the two first sub-outer peripheral portions are symmetrically disposed with respect to a reference line, and the two sub-extrusion blocks are symmetrically disposed with respect to the reference line; wherein, the reference line is a virtual line passing through the axis of the central rod and perpendicular to the axis of the central rod.

[0012] In an exemplary embodiment of the present disclosure, the sub-extrusion block includes a middle portion and edge portions located at both ends of the middle portion, and there is an accommodation space between the edge portion and the first sub-outer peripheral portion, and part of the sub-expansion member is also located in the accommodation space.

[0013] In an exemplary embodiment of the present disclosure, the outer peripheral surface of the deformation element is in contact with the inner peripheral surface of the bursting element.

[0014] On the other hand, the present disclosure provides a bursting device, including: A burster, and the burster is the above-mentioned burster; A medium filling device, which is communicated with the medium channel and is used for introducing a medium into the medium channel.

[0015] The technical solution provided by the present disclosure can achieve the following beneficial effects: The fracturer provided by the present disclosure includes: a central rod and an expansion member. The central rod has a medium channel, and there is a sealing chamber between the expansion member and the outer peripheral surface of the central rod. The sealing chamber is communicated with the medium channel. The expansion member is configured to move at least part of the expansion member away from the central rod when the sealing chamber is filled with a medium.

[0016] Thus, the fracturer provided by the present disclosure uses the pressure of the medium in the sealing chamber to push the expansion member to move away from the central rod, so as to apply pressure to the area to be fractured by the expansion member, thereby being able to form cracks in the area to be fractured. Therefore, the difficulty of using this fracturer for fracturing construction on rocks and / or minerals is relatively low and the process is less, which can save a large amount of construction time and construction costs.

[0017] Moreover, when using the fracturer of the present disclosure for fracturing construction on rocks and / or minerals, it is not necessary to use explosives for blasting, so that harmful gases can be avoided from being released, ensuring that the bodies of construction workers will not be damaged by harmful gases. At the same time, since the fracturer used in the present disclosure uses the pressure of the medium for fracturing, compared with explosives, the fracturing construction is easier to control, thereby improving the safety of the fracturing construction and further avoiding danger to construction workers. And, the fracturer provided by the present disclosure is safer in terms of storage and transportation compared with explosives.

[0018] Secondly, when using the fracturer of the present disclosure for fracturing construction, it is only necessary to fill the medium in the sealing chamber. Since the sealing chamber of this fracturer is relatively small, only a small amount of medium is required to complete the fracturing construction, which can save a large amount of costs compared with the prior art. And, the types of media used in the present disclosure are not limited, and can be liquids, gases or gas-liquid mixtures, etc., which can improve the applicable range and environmental adaptability of the fracturer.

[0019] In addition, after the fracturer completes a fracturing construction, the medium in the sealing chamber can be discharged, so that the expansion member returns to its original position, so that this fracturer can be reused repeatedly, which can reduce the costs of multiple fracturing constructions. At the same time, when the area to be fractured is too deep, this fracturer can be used for segmented fracturing, so as to meet the depths of different fracturing areas, further improving the applicable range and environmental adaptability of the fracturer.

[0020] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. Description of the Drawings

[0021] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0022] Figure 1 It shows a schematic longitudinal sectional view of an expanding tube according to an exemplary embodiment of the present disclosure; Figure 2 It shows according to an exemplary embodiment of the present disclosure Figure 1 a schematic view of the A-A section of; Figure 3 It shows a schematic sectional view of the expanding tube before expansion according to an exemplary embodiment of the present disclosure; Figure 4 It shows a schematic sectional view of the expanding tube after expansion according to an exemplary embodiment of the present disclosure.

[0023] Description of reference numerals: 1. Central rod; 11. Medium channel; 111. First channel; 112. Second channel; 12. Rod portion; 13. First head; 14. Second head; 2. Expanding member; 21. Deformation element; 22. Expanding and cracking element; 221. Extrusion block; 2211. Sub-extrusion block; 22111. Intermediate portion; 22112. Edge portion; 222. Telescopic member; 2221. Sub-telescopic member; 3. Sealing chamber; 4. Reference line; 5. First fixing ring; 6. Second fixing ring; 7. First gland; 8. Second gland; 9. First seal; 10. Second seal; 15. Third seal; 16. First locking member; 161. First sub-locking member; 162. Second sub-locking member; 17. Second locking member; 171. Third sub-locking member; 172. Fourth sub-locking member. Detailed implementation manners

[0024] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed descriptions will be omitted.

[0025] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the directions of the examples described in the drawings. It is understood that if the device of the icon is turned upside down, the component described as "upper" will become the component described as "lower". When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" disposed on another structure, or that a structure is "indirectly" disposed on another structure through another structure.

[0026] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first" and "second", etc. are used only as labels and are not a limitation on the quantity of their objects.

[0027] The present disclosure provides a splitting device, which can be applied to fields such as rock mining and mineral mining for splitting and cutting seams of rocks and / or minerals. For example, in the process of coal mining, the splitting device can be used to pre-split and cut the goaf of the roof, and utilize the self-weight stress of the roof strata and the pressure of the mine to realize the caving and filling of the mining area, thereby realizing automatic roadway formation and pillarless mining.

[0028] As Figures 1 to 4 shown, the splitting device provided by the present disclosure may include: a central rod 1 and an expansion member 2. The central rod 1 may have a medium channel 11. The expansion member 2 is sleeved on at least a part of the outer peripheral surface of the central rod 1, and there is a sealing chamber 3 between the expansion member 2 and the outer peripheral surface of the central rod 1. The sealing chamber 3 communicates with the medium channel 11, and the medium can enter the sealing chamber 3 through the medium channel 11. For example, the sealing chamber 3 may be a chamber naturally formed by leaving a gap between the outer peripheral surface of the central rod 1 and the inner peripheral surface of the expansion member 2, or may be a chamber structure additionally provided between the outer peripheral surface of the central rod 1 and the inner peripheral surface of the expansion member 2.

[0029] The expansion member 2 can be configured such that when the sealing chamber 3 is filled with a medium, at least a part of the expansion member 2 moves away from the central rod 1. It can be understood that at least a part of the expansion member 2 can move away from the axis of the central rod 1 during the expansion process, that is: at least a part of the expansion member 2 can expand away from the axis of the central rod 1; or, at least a part of the expansion member 2 can move along the extension direction of the axis of the central rod 1 during the expansion process, that is: at least a part of the expansion member 2 can expand along the extension direction of the axis of the central rod 1; or, a part of the expansion member 2 can move away from the axis of the central rod 1 during the expansion process, and a part of the expansion member 2 can move along the extension direction of the axis of the central rod 1 during the expansion process, that is: at least a part of the expansion member 2 can expand away from the axis of the central rod 1 and also expand along the extension direction of the axis of the central rod 1. For example: the direction away from the axis of the central rod 1 can be perpendicular to the extension direction of the axis of the central rod 1, but is not limited thereto.

[0030] Thus, the cracker provided by the present disclosure utilizes the pressure of the medium in the sealing chamber 3 to push the expansion member 2 to move away from the central rod 1, so as to apply pressure to the area to be cracked by the expansion member 2, thereby being able to form cracks in the area to be cracked. Thus, the difficulty of using this cracker for cracking construction on rocks and / or minerals is relatively low, the process is less, and a large amount of construction time and construction costs can be saved.

[0031] Moreover, when using the cracker of the present disclosure for cracking construction on rocks and / or minerals, it is not necessary to use explosives for blasting, thereby being able to avoid releasing harmful gases to ensure that the bodies of construction workers will not be damaged by harmful gases. At the same time, since the cracker used in the present disclosure utilizes the pressure of the medium for cracking, compared with explosives, the cracking construction is easier to control, thereby improving the safety of the cracking construction and further avoiding danger to construction workers. And, the cracker provided by the present disclosure is safer in terms of storage and transportation compared with explosives.

[0032] Secondly, when using the cracker of the present disclosure for cracking construction, it is only necessary to fill the sealing chamber 3 with a medium. Since the sealing chamber 3 of this cracker is relatively small, only a small amount of medium is required to complete the cracking construction, which can save a large amount of costs compared with the prior art.

[0033] In addition, after the cracker completes one cracking construction, the medium in the sealing chamber 3 can be discharged, so that the expansion member 2 returns to its original position, whereby this cracker can be reused repeatedly, and the cost of multiple cracking constructions can be reduced.

[0034] Meanwhile, since the fracturer can be reused in a cyclic manner, when the area to be fractured is too deep, the fracturer can be used for segmented fracturing, thereby meeting the depths of different fracturing areas and further improving the applicable range and environmental adaptability of the fracturer. For example, when the length of the fracturer is 1 meter and the area to be fractured is 10 meters, the fracturer can be used for fracturing 10 times, thereby reducing the length of the fracturer and meeting the height limit of the underground roadway.

[0035] In some embodiments, the medium can be a gas, a liquid, or a gas-liquid mixture. For example, the medium can be hydraulic oil, water, air, etc. The present disclosure does not limit the type of the medium, and it can be selected and set according to the actual situation, which are all within the protection scope of the present disclosure. Thus, the fracturer provided by the present disclosure is not limited to the type of the medium, which can improve the applicable range and environmental adaptability of the fracturer.

[0036] In some embodiments, as Figure 1 and Figure 2 shown, the expansion member 2 can include: a deformation element 21 and a fracturing element 22. Among them, the deformation element 21 can be sleeved on at least a part of the outer peripheral surface of the central rod 1, and the above-mentioned sealing chamber 3 can be located between the deformation element 21 and the outer peripheral surface of the central rod 1. The fracturing element 22 can be arranged on the side of the deformation element 21 away from the central rod 1, that is, the fracturing element 22 can be arranged on the outer peripheral surface side of the deformation element 21. Among them, when the sealing chamber 3 is filled with a medium, at least a part of the deformation element 21 can push the fracturing element 22 to move in a direction away from the axis of the central rod 1. It can be understood that when the sealing chamber 3 is filled with a medium, the filled medium can increase the pressure of the sealing chamber 3, causing the deformation element 21 to deform and move in a direction away from the central rod 1, so that the deformation element 21 can push the fracturing element 22 during the movement process, causing the fracturing element 22 to move along with the deformation element 21, and thus the fracturing element 22 can move in a direction away from the axis of the central rod 1.

[0037] The deformation element 21 can be an oil bag, an air bag, etc., and the material of the deformation element 21 can be rubber. With such a setting, it can ensure that the deformation element 21 has good deformation ability and can make the deformation element 21 have good recoverability, and it can return to the initial state after the fracturing construction is completed, so as to make preparations for the next fracturing construction. At the same time, when the material of the deformation element 21 is rubber, the deformation element 21 can have good structural strength, avoiding the problem that the deformation element 21 breaks after bearing a large pressure.

[0038] However, it is not limited to this. The deformation element 21 can also be other elements, such as a spring, etc. The material of the deformation element 21 can also not be rubber. For example, the material of the deformation element 21 can also be metal, polymer material, etc.

[0039] In some embodiments, as Figures 1 to 4 shown, the deformation element 21 can be arranged around the outer peripheral surface of the central rod 1. That is, it can be understood that the deformation element 21 can surround the outer peripheral surface of the central rod 1 by 360°. The bursting element 22 can be arranged around the outer peripheral surface of the deformation element 21. That is, it can be understood that the bursting element 22 can surround the outer peripheral surface of the deformation element 21 by 360°. By setting it like this, the stress uniformity of the deformation element 21 and the bursting element 22 can be increased, and the bursting effect of the burster can be improved.

[0040] It should be noted that when the deformation element 21 can be arranged around the outer peripheral surface of the central rod 1, the inner peripheral surface of the deformation element 21 and the outer peripheral surface of the central rod 1 can both be the above-mentioned sealing chamber 3. That is, the sealing chamber 3 can also surround the outer peripheral surface of the central rod 1 by 360°.

[0041] As Figures 2 to 4 shown, in the circumferential direction of the central rod 1, the outer peripheral surface of the deformation element 21 can have a first outer peripheral part and a second outer peripheral part. The bursting element 22 can include: an extrusion block 221 and a telescopic member 222. Among them, the extrusion block 221 can surround the first outer peripheral part, the telescopic member 222 can surround the second outer peripheral part, and both ends of the telescopic member 222 in the circumferential direction can be respectively connected to both ends of the extrusion block 221 in the circumferential direction. By setting it like this, the extrusion block 221 can be used to extrude the rock and / or mineral in the area to be burst, so that the rock and / or mineral extruded by the extrusion block 221 bursts. And because the extrusion block 221 is only arranged at the first outer peripheral part, the rock and / or mineral in the area to be burst can be directionally burst by using the extrusion block 221, so as to improve the bursting accuracy of the burster, avoid the occurrence of destructive phenomena such as collapse, and improve the safety of the bursting construction.

[0042] At the same time, by setting the telescopic member 222 surrounding the second outer peripheral part, the deformation direction of the deformation element 21 can be limited. For example: as Figure 2 and Figure 3 shown, the above-mentioned telescopic member 222 can be in a relaxed state when the deformation element 21 does not deform. As Figure 4As shown, when the deformation element 21 deforms, the telescopic member 222 can be in a tensioned state, so that the deformation element 21 cannot expand in the direction close to the telescopic member 222, and the deformation element 21 can only expand in the direction close to the extrusion block 221, so that the deformation element 21 can push the extrusion block 221 in a specific direction to move, thus achieving the purpose of directional cracking.

[0043] The material of the extrusion block 221 can be a metal material, such as stainless steel, high-strength steel, etc. Such a setting can improve the structural strength of the extrusion block 221 and improve the extrusion ability of the extrusion block 221 on rocks and / or minerals. The material of the telescopic member 222 can be polyurethane, which can ensure its telescopic deformation ability. However, it is not limited thereto, and the materials of the extrusion block 221 and the telescopic member 222 can also be other materials, and the present disclosure does not make specific limitations thereon.

[0044] The extrusion block 221 and the telescopic member 222 can be integrally formed by an integral molding technique, and there is no need to connect them with other connectors or connection materials, which can reduce the connection points between the extrusion block 221 and the telescopic member 222 and improve the connection strength between the extrusion block 221 and the telescopic member 222. For example, the extrusion block 221 and the telescopic member 222 can be integrally formed by casting, but it is not limited thereto.

[0045] In addition, the extrusion block 221 and the telescopic member 222 may not be integrally formed by an integral molding technique, that is, the extrusion block 221 and the telescopic member 222 can be manufactured separately and then connected with other connectors or connection materials. Such a setting can reduce the manufacturing difficulty of the extrusion block 221 and the telescopic member 222.

[0046] In some embodiments, the first outer periphery may include at least two first sub-outer peripheries, the second outer periphery may include at least two second sub-outer peripheries, and there may be a second sub-outer periphery between any two first sub-outer peripheries, that is, there may be a first sub-outer periphery between any two second sub-outer peripheries. For example, the first outer periphery may have two first sub-outer peripheries, and the second outer periphery may have two second sub-outer peripheries; or, the first outer periphery may have three first sub-outer peripheries, and the second outer periphery may have three third sub-outer peripheries, etc., which can be selected and set according to the needs of directional cracking.

[0047] As Figures 2 to 4As shown, the extrusion block 221 may include at least two sub-extrusion blocks 2211. The at least two sub-extrusion blocks 2211 may correspond to at least two first sub-peripheral portions, and each sub-extrusion block 2211 may surround its corresponding first sub-peripheral portion. That is, when the first peripheral portion has two first sub-peripheral portions, the extrusion block 221 may have two sub-extrusion blocks 2211, and the two sub-extrusion blocks 2211 may respectively surround a first sub-peripheral portion. When the first peripheral portion has three first sub-peripheral portions, the extrusion block 221 may have three sub-extrusion blocks 2211, and the three sub-extrusion blocks 2211 may respectively surround a first sub-peripheral portion, and so on.

[0048] The telescopic member 222 may include at least two sub-telescopic members 2221. The at least two sub-telescopic members 2221 may correspond to at least two second sub-peripheral portions, and each sub-telescopic member 2221 may surround its corresponding second sub-peripheral portion. That is, when the second peripheral portion has two second sub-peripheral portions, the telescopic member 222 may have two sub-telescopic members 2221, and the two sub-telescopic members 2221 may respectively surround a second sub-peripheral portion. When the second peripheral portion has three second sub-peripheral portions, the telescopic member 222 may have three sub-telescopic members 2221, and the three sub-telescopic members 2221 may respectively surround a second sub-peripheral portion, and so on. Both ends of each of the above-mentioned sub-telescopic members 2221 may be respectively connected to two adjacent sub-extrusion blocks 2211. It can be understood that the number of sub-telescopic members 2221 is the same as the number of sub-extrusion blocks 2211, so as to ensure that both ends of each telescopic member 222 can be respectively connected to two adjacent sub-extrusion blocks 2211.

[0049] In this embodiment, by providing at least two sub-extrusion blocks 2211 and at least two sub-telescopic members 2221, the number of directional cracking directions can be increased, so that the cracker can complete the cracking work on multiple regions during one cracking construction, thereby improving the cracking efficiency, further shortening the cracking time and reducing the cracking cost.

[0050] In some embodiments, as Figures 2 to 4 shown, the first peripheral portion may include two first sub-peripheral portions, the second peripheral portion may include two second sub-peripheral portions, and the two first sub-peripheral portions may be disposed opposite to each other. The extrusion block 221 may include two sub-extrusion blocks 2211, and the two sub-extrusion blocks 2211 may respectively surround a first sub-peripheral portion. With such a setting, the cracker can crack two opposite regions simultaneously during one cracking construction, thereby improving the cracking efficiency while avoiding increasing the probability of destructive phenomena such as collapse due to too many regions being cracked simultaneously.

[0051] The two first sub-peripheral parts can be symmetrically arranged with respect to the reference line 4, and the two sub-extrusion blocks 2211 can be symmetrically arranged with respect to the reference line 4. Among them, the reference line 4 can be a virtual line passing through the axis of the central rod 1 and perpendicular to the axis of the central rod 1. It should be noted that since the reference line 4 is a virtual line, it does not necessarily exist in the actual structure. With such an arrangement, the shapes and sizes of the two relatively arranged first sub-peripheral parts can be the same, and the shapes and sizes of the two relatively arranged sub-extrusion blocks 2211 can be the same. As a result, the forces on the two relatively arranged sub-extrusion blocks 2211 are the same, and the pressures applied to the two relatively arranged bursting regions are the same, ensuring that the bursting effect of the burster on each bursting region is the same, and further improving the bursting effect of the burster and the safety during the bursting process.

[0052] In some embodiments, the sub-extrusion block 2211 may include an intermediate part 22111 and edge parts 22112 located at both ends of the intermediate part 22111. There may be a receiving space between the edge parts 22112 and the first sub-peripheral part, and a part of the sub-expansion member 2221 may also be located in the receiving space. Since the sub-expansion member 2221 is relaxed in the initial state, the space occupied by the sub-expansion member 2221 is relatively large in the initial state. When the placement space of the sub-expansion member 2221 is too small, it may cause the sub-expansion member 2221 to protrude too much from the sub-extrusion block 2211, resulting in damage to the sub-expansion member 2221 due to friction with the hole wall during the process of placing the bursting tube in the hole. Therefore, in this embodiment, by providing a receiving space in the edge part 22112, a part of the sub-expansion member 2221 can be placed in the receiving space, avoiding the sub-expansion member 2221 protruding from the sub-extrusion block 2211 in the relaxed state, thereby reducing the probability of damage to the sub-expansion member 2221 and improving the use stability and service life of the bursting member.

[0053] In some embodiments, as Figures 1 to 4 shown, the outer peripheral surface of the deformation element 21 can be attached to the inner peripheral surface of the bursting element 22. With such an arrangement, the gap between the deformation element 21 and the bursting element 22 can be eliminated, so that when the deformation element 21 deforms, it can immediately push the bursting element 22 to move, improving the working sensitivity of the burster. However, this is not limited to this. There may also be a gap between the outer peripheral surface of the deformation element 21 and the inner peripheral surface of the bursting element 22, which can be selected and set according to the actual situation, and all of these are within the protection scope of the present disclosure.

[0054] In some embodiments, the cross-section of the pull rod can be circular, oval, rectangular, hexagonal, etc. For example, when the cross-section of the pull rod is circular, the deformation element 21 can be a circular ring, the expansion element can be a circular ring, and at this time, the extrusion block 221 in the expansion element can be arc-shaped, such as "C"-shaped, etc. When the cross-section of the pull rod is oval, the deformation element 21 can be an oval ring, the expansion element can be an oval ring, and at this time, the extrusion block 221 in the expansion element can be arc-shaped, such as "C"-shaped, etc. When the cross-section of the pull rod is rectangular, the deformation element 21 can be a rectangular ring, the expansion element can be a rectangular ring, and at this time, the extrusion block 221 in the expansion element can be right-angled "C"-shaped, etc.

[0055] In some embodiments, as Figure 1 shown, the medium channel 11 may include: a first channel 111 and a second channel 112. Among them, the first channel 111 may extend from one end face of the central rod 1 to the other end face, one end of the second channel 112 may communicate with the first channel 111, and the other end may communicate with the sealing chamber 3. With such a setting, a curved medium channel 11 can be divided into two straight channels, so as to avoid directly arranging a curved medium channel 11 in the central rod 1, thereby reducing the difficulty of forming the medium channel 11 in the central rod 1.

[0056] The extension length of the first channel 111 may be less than half of the length of the central rod 1. With such a setting, the amount of medium remaining in the first channel 111 during the expansion construction process can be reduced, thereby reducing the consumption of the medium and achieving the purpose of efficient expansion. Further, the extension length of the first channel 111 may be less than one-third of the length of the central rod 1, so as to further reduce the consumption of the medium.

[0057] Further, the width of the second channel 112 may be less than the width of the first channel 111. With such a setting, the medium can have a choke effect when flowing from the first channel 111 into the second channel 112, which can increase the pressure of the medium entering the sealing chamber 3 and further improve the expansion effect of the expander.

[0058] The axis of the second channel 112 may be perpendicular to the axis of the first channel 111. With such a setting, the length of the second channel 112 can be minimized, the amount of medium remaining in the second channel 112 during the expansion construction process can be reduced, the consumption of the medium can be further reduced, and the medium can reach the sealing chamber 3 faster, improving the use sensitivity of the expander.

[0059] In some embodiments, the expander may further include: a first fixing ring 5 and a second fixing ring 6. The first fixing ring 5 and the second fixing ring 6 may be sleeved on the outer peripheral surface of the central rod 1 and arranged at both ends of the expansion member 2 to fix the expansion member 2.

[0060] In the expansion member 2, the length of the deformation element 21 can be greater than the length of the bursting element 22. The first fixing ring 5 and the second fixing ring 6 can be located at both ends of the bursting element 22 and can be sleeved on the outer peripheral surface of a part of the deformation element 21. The first fixing ring 5 and the second fixing ring 6 can be connected to the deformation element 21 for fixing the expansion member 2.

[0061] The first fixing ring 5 and the second fixing ring 6 and the deformation element 21 are integrally formed by an integrated molding technique, and there is no need to connect them using other connecting parts or connecting materials, which can reduce the connection points between the first fixing ring 5 and the second fixing ring 6 and the deformation element 21 and improve the connection strength between the first fixing ring 5 and the second fixing ring 6 and the deformation element 21. For example: The first fixing ring 5 and the second fixing ring 6 and the deformation element 21 can be integrally formed by casting, but it is not limited thereto.

[0062] In addition, the first fixing ring 5 and the second fixing ring 6 and the deformation element 21 may not be integrally formed by an integrated molding technique, that is: the first fixing ring 5 and the second fixing ring 6 and the deformation element 21 can be manufactured separately and then connected using other connecting parts or connecting materials. Such a setting can reduce the manufacturing difficulty of the first fixing ring 5 and the second fixing ring 6 and the deformation element 21.

[0063] The burster may further include: a first gland 7 and a second gland 8. Both the first gland 7 and the second gland 8 are sleeved on the outer peripheral surface of the central rod 1, and the first gland 7 can be located on the side of the first fixing ring 5 away from the expansion member 2, and the second gland 8 can be located on the side of the second fixing rod away from the expansion member 2 for limiting and fixing the expansion member 2, the first fixing ring 5 and the second fixing ring 6 in the axial direction of the central rod 1 to prevent the expansion member 2, the first fixing ring 5 and the second fixing ring 6 from falling off. And by setting the first gland 7 and the second gland 8, the sealing chamber 3 can be sealed, so as to improve the airtightness of the sealing chamber 3.

[0064] Further, the burster may further include: a first seal 9 and a second seal 10. Among them, the first seal 9 can be arranged between the first gland 7 and the first fixing ring 5 and can cover one end of the sealing chamber 3. The second seal 10 can be arranged between the second gland 8 and the second fixing ring 6 and can cover the other end of the sealing chamber 3. Such a setting can further improve the airtightness of the sealing chamber 3, prevent the sealing chamber 3 from leaking air or liquid, and ensure the normal operation of the burster. The first seal 9 and the second seal 10 can be sealing rings, but it is not limited thereto.

[0065] The expansion device may further include: a first locking member 16 and a second locking member 17. Among them, the first locking member 16 may be sleeved on the outer peripheral surface of the central rod 1 and disposed on the side of the first gland 7 away from the expansion member 2; the second locking member 17 may be sleeved on the outer peripheral surface of the central rod 1 and may be disposed on the side of the second gland 8 away from the expansion member 2, so as to limit and fix the respective components located therebetween by using the first locking member 16 and the second locking member 17, ensuring that the respective structures of the expansion device will not loosen or become detached during the operation of the expansion device, and further improving the working stability of the expansion device.

[0066] The outer peripheral surfaces of the first locking member 16, the second locking member 17 and the central rod 1 may be connected. For example: the outer peripheral surfaces of the first locking member 16, the second locking member 17 and the central rod 1 may be connected by threads, which can facilitate disassembly and installation while ensuring relatively high connection strength, so as to facilitate the maintenance and replacement of the respective components of the expansion device in the later stage. However, this is not limited thereto. The outer peripheral surfaces of the first locking member 16, the second locking member 17 and the central rod 1 may also be connected by welding, clamping or other means, which are all within the protection scope of the present disclosure and can be selected and set according to actual needs.

[0067] The first locking member 16 may include: a first sub-locking member 161 and a second sub-locking member 162. Among them, the first sub-locking member 161 may be sleeved on the outer peripheral surface of the central rod 1 and disposed on the side of the first gland 7 away from the expansion member 2; the second sub-locking member 162 may be sleeved on the outer peripheral surface of the central rod 1 and disposed on the side of the first sub-locking member 161 away from the expansion member 2. With such a setting, the limiting and fixing ability of the first locking member 16 can be further improved.

[0068] The second locking member 17 may include: a third sub-locking member 171 and a fourth sub-locking member 172. Among them, the third sub-locking member 171 may be sleeved on the outer peripheral surface of the central rod 1 and disposed on the side of the second gland 8 away from the expansion member 2; the fourth sub-locking member 172 may be sleeved on the outer peripheral surface of the central rod 1 and disposed on the side of the third sub-locking member 171 away from the expansion member 2. With such a setting, the limiting and fixing ability of the second locking member 17 can be further improved.

[0069] In some embodiments, the central rod 1 may include: a rod portion 12 and a first head 13 and a second head 14 located at both ends of the rod portion 12. Among them, the width of the rod portion 12 may be greater than the width of the first head 13, and the width of the rod portion 12 may also be greater than the width of the second head 14.

[0070] The expansion member 2 can be sleeved on the outer peripheral surface of the rod portion 12, and the first channel 111 can extend from one end of the first head 13 away from the rod portion 12 towards the second head 14. Since the width of the rod portion 12 is greater than the widths of the first head 13 and the second head 14, the structural strength of the rod portion 12 can be made superior to that of the first head 13 and the second head 14. In this way, sleeving the expansion member 2 on the outer peripheral surface of the rod portion 12 can avoid the problem that the rod portion 12 is damaged due to the large pressure in the sealing chamber 3 when the expander is working.

[0071] The above-mentioned second channel 112 can be provided in the rod portion 12, and there can be a gap between the second channel 112 and the first gasket to prevent high-pressure gas or liquid from entering the sealing chamber 3 through the second channel 112 and causing a large impact on the first gasket and damaging the first gasket.

[0072] Furthermore, both the first gland 7 and the first locking member 16 can be sleeved on the outer peripheral surface of the first head 13. Since the width of the rod portion 12 is greater than the width of the first head 13, there is a first step at the connection between the rod portion 12 and the first head 13, and the first gland 7 can abut against the first step, facilitating the setting of the first gland 7 and improving the limiting and fixing effects of the first gland 7.

[0073] The first seal 9 can also abut against the first step, facilitating the setting of the first seal 9 and improving the sealing effect of the first seal 9.

[0074] The second fixing ring 6 can be provided on the outer peripheral surface of the second head 14. Since the width of the rod portion 12 is greater than the width of the second head 14, there is a second step at the connection between the rod portion 12 and the second head 14, and the second fixing ring 6 can abut against the second step, facilitating the setting of the second fixing ring 6. In addition, the above-mentioned second gland 8 and the second locking member 17 can also be sleeved on the outer peripheral surface of the second head 14.

[0075] In some embodiments, a third seal 15 can be provided between the second fixing ring 6 and the second step. The third seal 15 can cover the sealing chamber 3 to further improve the airtightness of the sealing chamber 3. The third seal 15 can also be a sealing ring, but is not limited thereto.

[0076] In some embodiments, an expander device is provided. As shown in FIGS. 1 to Figure 4 shown, the expander device can include: an expander and a medium filling device. Among them, the expander can be the expander described above. The medium filling device can be connected to the medium channel 11 for introducing a medium into the medium channel 11.

[0077] It should be noted that the specific structure and beneficial effects of the fracturer have been described in detail in the previous embodiment of the present disclosure. Therefore, in this embodiment, the specific structure and beneficial effects of the fracturer will not be elaborated again, and reference can be made to the specific description in the previous embodiment, which are all within the protection scope of the present disclosure.

[0078] Since the fracturing device provided in this embodiment includes the above-mentioned fracturer. As Figures 1 to 4 shown, the above-mentioned fracturer may include: a central rod 1 and an expansion member 2. The central rod 1 may have a medium channel 11. The expansion member 2 is sleeved on at least a part of the outer peripheral surface of the central rod 1, and there is a sealed chamber 3 between the expansion member 2 and the outer peripheral surface of the central rod 1. The sealed chamber 3 communicates with the medium channel 11. The medium output by the medium filling device can enter the sealed chamber 3 through the medium channel 11. The expansion member 2 may be configured such that when the sealed chamber 3 is filled with the medium, at least a part of the expansion member 2 moves away from the central rod 1.

[0079] Thus, the fracturer provided by the present disclosure utilizes the pressure of the medium in the sealed chamber 3 to push the expansion member 2 to move away from the central rod 1, so as to apply pressure to the area to be fractured by the expansion member 2, thereby being able to form cracks in the area to be fractured. Therefore, the difficulty of using this fracturing device for fracturing construction on rocks and / or minerals is relatively low, and the processes are fewer, which can save a large amount of construction time and construction costs.

[0080] Moreover, when using the fracturing device of the present disclosure for fracturing construction on rocks and / or minerals, it is not necessary to use explosives for blasting, thereby being able to avoid releasing harmful gases to ensure that the bodies of construction workers will not be damaged by harmful gases. At the same time, since the fracturer used in the present disclosure utilizes the pressure of the medium for fracturing, compared with explosives, the fracturing construction is easier to control, thereby improving the safety of the fracturing construction and further avoiding danger to construction workers. And, the fracturing device provided by the present disclosure is safer in terms of storage and transportation compared with explosives.

[0081] Secondly, when using the fracturing device of the present disclosure for fracturing construction, it is only necessary to fill the medium in the sealed chamber 3. Since the sealed chamber 3 of the fracturer is relatively small, only a small amount of medium is required to complete the fracturing construction, which can save a large amount of costs compared with the prior art. And, the types of media for the fracturer provided by the present disclosure are not limited, and can be liquids, gases or gas-liquid mixtures, etc., which can improve the applicable range and environmental adaptability of the fracturer.

[0082] In addition, after the fracturing device completes one fracturing construction, the medium in the sealed chamber 3 of the fracturer can be discharged, so that the expansion member 2 returns to its original position, thereby enabling the fracturing device to be reused repeatedly, which can reduce the costs of multiple fracturing constructions.

[0083] Meanwhile, when the area to be expanded and cracked is too deep, this expansion and cracking device can be used for segmented expansion and cracking, so as to meet the depths of different expansion and cracking areas, and further improve the applicable range and environmental adaptability of the expansion and cracking device.

[0084] In some embodiments, the medium filling device may be a liquid pressure pump and / or a gas pressure pump, but is not limited thereto. The medium filling device may also be other filling devices, and the present disclosure does not make specific limitations thereto.

[0085] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the appended claims.

Claims

1. A splitting device, characterized in that, Comprising: A central rod having a medium channel; An expansion member sleeved on at least a part of the outer peripheral surface of the central rod, and there is a sealing chamber between the expansion member and the outer peripheral surface of the central rod, and the sealing chamber communicates with the medium channel; the expansion member is configured to move at least a part of the expansion member away from the central rod when the sealing chamber is filled with a medium.

2. The expanding cracker according to claim 1, wherein, The expansion member includes: A deformation element sleeved on at least a part of the outer peripheral surface of the central rod, and the sealing chamber is located between the deformation element and the outer peripheral surface of the central rod; A bursting element provided on the side of the deformation element away from the central rod; Wherein, when the sealing chamber is filled with the medium, at least a part of the deformation element can push the bursting element to move away from the axis of the central rod.

3. The expander according to claim 2, characterized in that, The deformation element is arranged around the outer peripheral surface of the central rod, and the bursting element is arranged around the outer peripheral surface of the deformation element.

4. The splitting device according to claim 3, characterized in that In the circumferential direction of the central rod, the outer peripheral surface of the deformation element has a first outer peripheral part and a second outer peripheral part, and the bursting element includes: Extrusion blocks surrounding the first outer peripheral part; Expansion members surrounding the second outer peripheral part, and both ends of the expansion members in the circumferential direction are respectively connected to both ends of the extrusion blocks in the circumferential direction.

5. The expander according to claim 4, characterized in that, The first outer peripheral part includes at least two first sub-outer peripheral parts, the second outer peripheral part includes at least two second sub-outer peripheral parts, and there is one second sub-outer peripheral part between any two first sub-outer peripheral parts; The extrusion blocks include at least two sub-extrusion blocks, at least two sub-extrusion blocks correspond to at least two first sub-outer peripheral parts, and each sub-extrusion block surrounds the corresponding first sub-outer peripheral part; The expansion members include at least two sub-expansion members, at least two sub-expansion members correspond to at least two second sub-outer peripheral parts, each sub-expansion member surrounds the corresponding second sub-outer peripheral part, and both ends of each sub-expansion member are respectively connected to two adjacent sub-extrusion blocks.

6. The expanding cracker according to claim 5, wherein The first outer peripheral part includes two first sub-outer peripheral parts, the second outer peripheral part includes two second sub-outer peripheral parts, and the two first sub-outer peripheral parts are arranged oppositely; The extrusion blocks include two sub-extrusion blocks, and the two sub-extrusion blocks respectively surround one first sub-outer peripheral part.

7. The expansion cracker according to claim 6, characterized in that, The two first sub-outer peripheral parts are symmetrically arranged through a reference line, and the two sub-extrusion blocks are symmetrically arranged through the reference line; Wherein, the reference line is a virtual line passing through the axis of the central rod and perpendicular to the axis of the central rod.

8. The expander according to any one of claims 5 to 7, characterized in that, The sub-extrusion block includes a middle part and edge parts located at both ends of the middle part, and there is an accommodation space between the edge parts and the first sub-outer peripheral part, and part of the sub-expansion members are also located in the accommodation space.

9. The expansion cracker according to any one of claims 2 to 7, characterized in that, The outer peripheral surface of the deformation element is attached to the inner peripheral surface of the bursting element.

10. A splitting device, characterized in that, Comprising: A buster, which is the buster according to any one of claims 1 to 9 above; A medium filling device communicating with the medium channel for introducing a medium into the medium channel.

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