Protection device for underground cable

Abstract

The utility model belongs to the technical field of underground communication, and discloses a protection device for an underground cable. Comprising a shell, a first rotating shaft, a second rotating shaft, a first wiring piece, a second wiring piece and a conductive elastic piece which are matched with one another, the first rotating shaft is arranged in the shell in a penetrating mode in the direction perpendicular to the first baffle, and the two ends of the first rotating shaft abut against the shell and the first baffle respectively. The second rotating shaft and the first rotating shaft are correspondingly arranged in the same structure; the first wiring piece is movably inserted into the first axial groove, and the second wiring piece is movably inserted into the second axial groove; and two ends of the conductive elastic piece are respectively fixed with the first wiring piece and the second wiring piece. According to the utility model, the fracture risk of the underground cable when the underground cable is pulled by external force is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of underground communication, in particular to a protective device for underground cables. Background Art

[0002] The use of various underground communication equipment, inspection equipment, mining equipment, etc. not only realizes the intelligence of underground mining, but also has important significance in improving mining safety.

[0003] All of the aforementioned downhole equipment requires cables for proper operation. Specifically, from a power supply perspective, all downhole equipment requires direct power supply via wired cables or indirect power supply via mobile charging. Furthermore, from a wired communication perspective, cables are required to enable communication between downhole equipment and surface equipment, and between downhole equipment and each other, achieving interconnection.

[0004] However, the inventors discovered that existing underground cables are configured in the same way as surface cables: a fixed length of cable is cut as needed and then connected to the target device. However, cables with this type of connection are easily broken by external forces. For surface use, the broken cable can simply be reconnected. However, the underground mining process itself presents various safety hazards. If a cable breaks due to reasons such as mine collapse or geological dislocation, causing the equipment itself to malfunction or communication with other devices, it could lead to a more serious safety incident. Utility Model Content

[0005] The utility model aims to provide a protection device for underground cables to improve the technical problem that the existing cable connection method cannot be applied to underground mine equipment.

[0006] In order to achieve the above purpose, the present invention proposes the following technical solutions:

[0007] A downhole cable protection device comprises a housing, a first rotating shaft, a second rotating shaft, a first connecting piece, a second connecting piece, and a conductive elastic member; wherein a first baffle and a second baffle are arranged in parallel in the housing to divide the housing into three areas;

[0008] The first rotating shaft is provided in the housing along a direction perpendicular to the first baffle, and its two ends are respectively in contact with the housing and the first baffle; the second rotating shaft is provided in the housing along a direction perpendicular to the second baffle, and its two ends are respectively in contact with the housing and the second baffle; wherein, a first through hole corresponding to the three regions is provided on the housing along the axial direction of the first rotating shaft; a first axial groove is provided on the end surface corresponding to the first baffle, and a second through hole is provided on the side wall of the first axial groove; a second axial groove is provided on the end surface corresponding to the second baffle, and a third through hole is provided on the side wall of the second axial groove;

[0009] The first connecting piece is movably inserted into the first axial groove, and the second connecting piece is movably inserted into the second axial groove;

[0010] Two ends of the conductive elastic member are respectively fixed to the first connecting member and the second connecting member.

[0011] Furthermore, the shell is a cylindrical structure, and the first rotating shaft and the second rotating shaft are arranged along the axial direction of the shell.

[0012] Furthermore, the first rotating shaft and the second rotating shaft are coaxially arranged.

[0013] Furthermore, there are two first through holes, which are oppositely opened on the housing.

[0014] Furthermore, the conductive elastic member is a conductive spring.

[0015] Furthermore, it includes a buffer layer, which is coated on the outer side of the shell.

[0016] Furthermore, it includes: a screw and a spiral tube; the screw is fixed to the two end surfaces of the shell along the axial direction of the first rotating shaft or the second rotating shaft, and the spiral tube is sleeved on the screw through threaded fitting.

[0017] Furthermore, it includes: a connecting rod and a fixing plate; the connecting rod is fixed to the two end surfaces of the shell along the axial direction of the first rotating shaft or the second rotating shaft, and the fixing plate is fixed on the connecting rod; wherein, the part of the fixing plate away from the connecting rod is provided with a plurality of fourth through holes.

[0018] Furthermore, it includes a Hall sensor; the Hall sensor is fixed on the two end surfaces of the shell and is communicatively connected to the communication terminal; wherein the Hall sensor is used to be activated when the cable wound around the first rotating shaft or the second rotating shaft is pulled and released, and communicate with the communication terminal.

[0019] Furthermore, the shell, the first baffle and the second baffle are all made of magnetic-free aluminum alloy.

[0020] Beneficial effects:

[0021] This technical solution designs a protective device to improve the technical defect that underground cables are easily broken by external forces and cause safety hazards.

[0022] Specifically, in the protective device, a first baffle and a second baffle are provided in parallel within the shell to divide the shell into three areas. The first rotating shaft is passed through the shell in a direction perpendicular to the first baffle, and its two ends abut against the shell and the first baffle respectively; the second rotating shaft is passed through the shell in a direction perpendicular to the second baffle, and its two ends abut against the shell and the second baffle respectively. A first through hole corresponding to the three areas is provided on the shell along the axial direction of the first rotating shaft. A first axial groove is provided on the end surface of the first rotating shaft corresponding to the first baffle, and a second through hole is provided on the side wall of the first axial groove; a second axial groove is provided on the end surface of the second rotating shaft corresponding to the second baffle, and a third through hole is provided on the side wall of the second axial groove. The first wiring member is movably inserted into the first axial groove, and the second wiring member is movably inserted into the second axial groove. The two ends of the conductive elastic member are fixed to the first wiring member and the second wiring member respectively.

[0023] In actual application, one end of the first cable is passed through the second through-hole and fixed to the first wiring member, and the first cable portion is wound around the first rotating shaft; one end of the second cable is passed through the third through-hole and fixed to the second wiring member, and the second cable portion is wound around the second rotating shaft. At this time, under the conductive action of the first wiring member, the conductive elastic member, and the second wiring member, the first cable and the second cable will form a complete conductive circuit to realize power supply or communication functions. If the first cable or the second cable is accidentally pulled by external force, part of the cable on the first rotating shaft or the second rotating shaft will be released during the pulling process, thereby preventing the first cable or the second cable from breaking. At the same time, because the first wiring member and the second wiring member are designed to be movable and plug-in, and are equipped with a conductive elastic member that can undergo elastic deformation, the cable breakage caused by axial resistance during the release process is also avoided.

[0024] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered to be part of the inventive subject matter of this disclosure, provided such concepts are not mutually inconsistent.

[0025] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will become apparent from the following description or through practice of specific embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in every figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, in which:

[0027] Figure 1 This is an overall structural diagram of the downhole cable protection device according to this embodiment;

[0028] Figure 2 This is an axial cross-sectional view of the downhole cable protection device according to this embodiment;

[0029] Figure 3 This is a schematic diagram of an installation structure of the protection device described in this embodiment;

[0030] Figure 4 This is a schematic diagram of another installation structure of the protection device described in this embodiment.

[0031] The reference numerals in the figure are: 1 is a housing, 2 is a first rotating shaft, 3 is a second rotating shaft, 4 is a first wiring member, 5 is a second wiring member, 6 is a conductive elastic member, 7 is a screw, 8 is a solenoid, 9 is a connecting rod, 10 is a fixing plate, 11 is a Hall sensor; 1.1 is a first baffle, 1.2 is a second baffle, 1.3 is a first through hole, and 10.1 is a fourth through hole. DETAILED DESCRIPTION

[0032] To further clarify the objectives, technical solutions, and advantages of the embodiments of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without requiring creative effort are within the scope of protection of the present invention. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the field to which the present invention pertains.

[0033] The words "first", "second" and similar terms used in the specification and claims of the present utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "a", "an" or "the" and similar words do not indicate a quantitative limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] All types of underground equipment require cables for proper operation. However, existing underground cables are configured in the same manner as surface cables, making them susceptible to breakage due to external forces. Underground mining itself presents numerous safety hazards. If cables break due to factors such as mine collapse or geological dislocation, causing equipment to malfunction or communication problems with other equipment, this could lead to even greater safety incidents. Therefore, this embodiment aims to provide a protective device for underground cables to address the aforementioned technical drawbacks of current underground cable configurations.

[0035] The downhole cable protection device disclosed in this embodiment will be further specifically introduced below with reference to the accompanying drawings.

[0036] Combine Figure 1-2 As shown, the protective device comprises a housing 1, a rotating shaft, a wiring member, and a conductive elastic member 6 that cooperate with each other. The rotating shaft comprises a first rotating shaft 2 and a second rotating shaft 3, and the wiring member comprises a first wiring member 4 and a second wiring member 5. A first baffle 1.1 and a second baffle 1.2 are arranged parallel to each other within the housing 1; the first baffle 1.1 and the second baffle 1.2 divide the housing 1 into three areas.

[0037] The first rotating shaft 2 is inserted into the housing 1 in a direction perpendicular to the first baffle 1.1, and its two ends are respectively in contact with the housing 1 and the first baffle 1.1; at the same time, a first axial groove is formed on the end surface corresponding to the first baffle 1.1, and a second through hole is formed on the side wall of the first axial groove. Correspondingly, the second rotating shaft 3 is inserted into the housing 1 in a direction perpendicular to the second baffle 1.2, and its two ends are respectively in contact with the housing 1 and the second baffle 1.2; a second axial groove is formed on the end surface corresponding to the second baffle 1.2, and a third through hole is formed on the side wall of the second axial groove. Furthermore, a first through hole 1.3 is formed on the housing 1 along the axial direction of the first rotating shaft 2 or the second rotating shaft 3, and the first through hole 1.3 corresponds to the three areas at the same time.

[0038] The first connecting piece 4 is movably inserted into the first axial groove, and the second connecting piece 5 is movably inserted into the second axial groove. The two ends of the conductive elastic member 6 are fixed to the first connecting piece 4 and the second connecting piece 5 respectively.

[0039] In a specific implementation, one end of the first cable is passed through the second through-hole and fixed to the first connector 4, and the first cable is partially wound around the first rotating shaft 2. One end of the second cable is passed through the third through-hole and fixed to the second connector 5, and the second cable is partially wound around the second rotating shaft 3. At this time, under the conductive action of the first connector 4, the conductive elastic member 6, and the second connector 5, the first and second cables will form a complete conductive circuit to achieve power supply or communication functions. If the first or second cable is accidentally pulled by an external force, the portion of the cable on the first rotating shaft 2 or the second rotating shaft 3 will be released during the pulling process, thereby preventing the first or second cable from breaking. At the same time, because the first and second connectors 4 and 5 are designed to be removable and plug-in, and are equipped with the conductive elastic member 6 that can undergo elastic deformation, the cable breakage caused by axial resistance during the release process is also avoided.

[0040] In this embodiment, the conductive elastic member 6 is specifically a conductive spring. The housing 1, first baffle 1.1, and second baffle 1.2 are specifically made of a magnetically insulated aluminum alloy. The shaft is made of iron. To facilitate pulling and releasing the cable, bearing structures are provided at both ends of the first and second shafts 2 and 3.

[0041] Furthermore, the housing 1 is configured as a cylindrical structure, with the first and second rotating shafts 2 and 3 extending axially along the housing 1. This prevents the housing 1 from obstructing the cable and causing breakage during cable pulling and release. Furthermore, the first and second rotating shafts 2 and 3 are coaxially arranged. This prevents uneven force on both ends of the protective device during cable pulling and release, preventing the device from tilting and affecting its proper function.

[0042] In the protection device, two first through holes 1.3 are provided, which are oppositely opened on the housing 1. This allows the cable to be quickly released during cable pulling.

[0043] As a preferred embodiment, in order to improve the anti-collision performance of the protective device, it is further configured to include a buffer layer. Specifically, the buffer layer is coated on the outer side of the shell 1. In a specific implementation, the buffer layer can be a buffer structure such as a rubber pad, a sponge pad, or a foam pad.

[0044] As an optional implementation method, combined with Figure 3 As shown, the protective device also includes the following structure to achieve its fixed installation underground: the protective device is provided with a screw 7 and a solenoid 8. The screw 7 is fixed to the two end surfaces of the housing 1 along the axial direction of the first rotating shaft 2 or the second rotating shaft 3, and the solenoid 8 is sleeved on the screw 7 through a threaded fit. At this time, the length of the screw 7 and the solenoid 8 can be adjusted according to the corresponding roadway height, and the protective device is supported and fixed in the roadway by the solenoid 8.

[0045] As another optional implementation, combining Figure 4 As shown, the protective device also includes the following structure to ensure its secure installation underground: the protective device includes a connecting rod 9 and a fixing plate 10. The connecting rod 9 is fixed to both end surfaces of the housing 1 along the axial direction of the first rotating shaft 2 or the second rotating shaft 3, and the fixing plate 10 is fixed to the connecting rod 9. The fixing plate 10 is provided with a plurality of fourth through-holes 10.1 at the end away from the connecting rod 9. Fasteners such as screws can be passed through the fourth through-holes 10.1 and fixed to the tunnel wall, thereby securing the protective device. In a specific implementation, a pull rope is also provided, one end of which is fixedly connected to the housing 1 and the other end is fixed to a ground peg. Multiple pull ropes are provided, arranged at different locations along the housing 1. The pull ropes control the range of movement of the housing. When the ground moves, the pull ropes constrain the housing, preventing large-scale movement and further preventing cable breakage.

[0046] Considering that the pulling and releasing of the cable may correspond to corresponding risks such as collapse and geological dislocation, a corresponding structure is set to provide feedback on the cable pulling behavior, thereby alarming for possible abnormal events. Specifically, the protection device also includes a Hall sensor 11. The Hall sensor 11 is respectively fixed to the two end surfaces of the shell 1 and is connected to the communication terminal for communication. The Hall sensor is used to be activated when the cable wound around the first rotating shaft 2 or the second rotating shaft 3 is pulled and released, and to communicate with the communication terminal.

[0047] While the present invention has been described above with reference to preferred embodiments, this is not intended to limit the present invention. Persons skilled in the art will readily appreciate that various modifications and variations may be made without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A protection device for underground cables, characterized in that: The invention comprises a housing, a first rotating shaft, a second rotating shaft, a first connecting member, a second connecting member and a conductive elastic member; wherein a first baffle and a second baffle are arranged in parallel in the housing to divide the housing into three areas; The first rotating shaft is provided in the housing along a direction perpendicular to the first baffle, and its two ends are respectively in contact with the housing and the first baffle; the second rotating shaft is provided in the housing along a direction perpendicular to the second baffle, and its two ends are respectively in contact with the housing and the second baffle; wherein, a first through hole corresponding to the three regions is provided on the housing along the axial direction of the first rotating shaft; a first axial groove is provided on the end surface corresponding to the first baffle, and a second through hole is provided on the side wall of the first axial groove; a second axial groove is provided on the end surface corresponding to the second baffle, and a third through hole is provided on the side wall of the second axial groove; The first connecting piece is movably inserted into the first axial groove, and the second connecting piece is movably inserted into the second axial groove; Two ends of the conductive elastic member are respectively fixed to the first connecting member and the second connecting member.

2. The downhole cable protection device according to claim 1, characterized in that: The shell is a cylindrical structure, and the first rotating shaft and the second rotating shaft are arranged along the axial direction of the shell.

3. The downhole cable protection device according to claim 2, characterized in that: The first rotating shaft and the second rotating shaft are coaxially arranged.

4. The downhole cable protection device according to claim 1, characterized in that: There are two first through holes, which are oppositely opened on the housing.

5. The downhole cable protection device according to claim 1, characterized in that: The conductive elastic member is a conductive spring.

6. The downhole cable protection device according to claim 1, characterized in that: A buffer layer is included, and the buffer layer is coated on the outer side of the shell.

7. The downhole cable protection device according to claim 1, characterized in that: include: Screw and coil; the screw is fixed to the two end surfaces of the housing along the axial direction of the first rotating shaft or the second rotating shaft, and the coil is sleeved on the screw through threaded fitting.

8. The downhole cable protection device according to claim 1, characterized in that: include: Connecting rod and fixing plate; the connecting rod is fixed to the two end surfaces of the shell along the axial direction of the first rotating shaft or the second rotating shaft, and the fixing plate is fixed on the connecting rod; wherein, the part of the fixing plate away from the connecting rod is provided with a plurality of fourth through holes.

9. The downhole cable protection device according to claim 1, characterized in that: It includes a Hall sensor; the Hall sensor is fixed to the two end surfaces of the shell and is connected to the communication terminal; wherein the Hall sensor is used to be activated when the cable wound around the first rotating shaft or the second rotating shaft is pulled and released, and communicate with the communication terminal.

10. The downhole cable protection device according to claim 1, characterized in that: The shell, the first baffle and the second baffle are all made of magnetic-free aluminum alloy.

Images