Downhole locomotive cable anti-drag buffer device

Abstract

The utility model relates to an underground locomotive cable anti-drag buffer device which comprises a group of guide rails arranged in parallel and a bearing installed between the guide rails through universal wheels, the guide rails are of arc-shaped structures, and the radius of the guide rails is matched with the radius of a roadway turning or crossing area. The outer sides of the at least two bearings are sleeved with elastic hoses, and the guide rail is installed on a rock wall based on the damping connecting structure. According to the underground locomotive cable resistance-reducing and buffering device provided by the invention, the contact mode of the cable and surrounding objects during operation of a locomotive is changed, so that the direct contact between the cable and a rock wall is changed into the contact between the cable and the bearing with rotatable and resistance-reducing and buffering functions, and thus the friction force and resilience force between the cable and the contact objects are reduced; safety accidents caused by cable abrasion electric leakage and cable springback at the moment of locomotive starting are avoided.

Description

Technical Field

[0001] This application relates to the field of downhole auxiliary equipment technology, and in particular to a drag reduction and buffer device for downhole locomotive cables. Background Technology

[0002] With the continuous promotion of green exploration in mines, fuel-powered machinery and equipment in underground mines are gradually being phased out, replaced by electrically powered equipment, especially electric loaders, which are more widely used underground. Electric loaders are characterized by strong power, low noise, and no air pollution. Because loaders travel long distances (generally 100 meters) in underground tunnels, electric loaders need to be equipped with a long cable at the rear. During operation, the cable is extended and retracted by the loader's cable retraction device. When the loader is turning or crossing tunnels, the cable is in direct contact with the tunnel wall without any cushioning.

[0003] When a loader is operating in a tunnel turning or intersecting area, the loader's cable will experience close friction with the tunnel wall. Over time, this can easily damage the cable sheath, eventually leading to cable leakage and electric shock. Furthermore, when the loader suddenly starts in the tunnel, the cable's direct contact with the rock wall without any cushioning can cause it to spring back instantly, potentially injuring surrounding equipment or personnel. Utility Model Content

[0004] To solve or partially solve the problems existing in the related technologies, this application provides a drag reduction and buffer device for underground locomotive cables, which changes the direct contact between the cable and the rock wall during locomotive operation to contact with a bearing that has rotatable and drag reduction buffer functions.

[0005] The first aspect of this application provides a drag reduction and buffer device for underground locomotive cables, comprising: a set of parallel guide rails and bearings installed between the guide rails via casters. The guide rails are arc-shaped structures with radii matching the radius of the roadway turning or intersection area. At least two bearings are provided, and elastic hoses are sleeved on the outer side. The guide rails are installed on the rock wall based on a shock-absorbing connection structure.

[0006] The shock-absorbing connection structure includes a shock absorber connected to the guide rail, a support rod connected to the other end of the shock absorber, and fixing rivets for fixing the support rod to the rock wall. A shock absorber isolation plate is provided between the shock absorber and the guide rail.

[0007] The two guide rails are connected at both ends by fixed rods.

[0008] Limiters are installed on the track, and the casters move along the guide track in a limited manner, thus restricting the movement area based on the limiters.

[0009] The technical solution provided in this application may include the following beneficial effects:

[0010] This application provides a drag reduction and buffer device for underground locomotive cables. The device changes the way the cable contacts the surrounding objects when the locomotive is running, changing the cable from direct contact with the rock wall to contact with a bearing that has a rotatable and drag-reducing buffer function. This reduces the friction and rebound force between the cable and the contact object, and avoids cable wear and leakage, as well as safety accidents caused by cable rebound at the moment the locomotive starts.

[0011] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0012] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0013] Figure 1 This is a schematic diagram of the structure of the device shown in the embodiments of this application;

[0014] Figure label:

[0015] In the diagram, 1—guide rail, 2—caster wheel, 3—limiter, 4—bearing shaft, 5—flexible hose, 6—fixed rod, 7—support rod, 8—shock absorber, 9—shock absorber isolation plate, 10—fixed rivet, 11—rock wall, 12—cable. Detailed Implementation

[0016] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0017] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0018] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0019] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 The illustrated underground locomotive cable drag reduction and buffer device includes: guide rails 1 and bearing shafts 4 installed between the guide rails 1. The guide rails 1 are arc-shaped rails made of stainless steel and are installed in the turning or crossing areas of the roadway in the locomotive operating area, with the rail radius matching the radius of the installation area. The two guide rails 1 are installed parallel to each other on the rock wall 11 through a shock-absorbing connection structure, and the two ends of the two guide rails 1 are connected by fixing rods 6 to form a whole, thereby increasing the stability of the device.

[0022] The vibration damping connection structure includes a shock absorber 8 connected to the guide rail 1, a support rod 7 connected to the other end of the shock absorber 8, and fixing rivets 10 for fixing the support rod 7 to the rock wall 11. A shock absorber isolation plate 9 is provided between the shock absorber 8 and the guide rail 1. The shock absorber 8 is connected to one end of the support rod 7 and the guide rail 1. The shock absorber 8 absorbs and buffers the vibration generated by the cable 12 contacting the device during locomotive operation. The shock absorber isolation plate 9 is used to isolate the shock absorber 8 from the guide rail 1, preventing the shock absorber 8 from directly rubbing or colliding with the guide rail 1 during operation. It also helps to disperse the stress generated by the shock absorber 8, protecting the normal operation and service life of each component. When connecting to the soft rock wall 11, the support rod 7 is connected to the rock wall 11 using expansion bolts and reinforced with anchor bolts. In actual use, depending on the vibration of the device, a secondary vibration damping structure is added between the support rod 7 and the rock wall 11, specifically by adding spring washers or rubber pads between the fixing rivets 10 and the support rod 7.

[0023] Universal wheels 2 are installed at both ends of the bearing shaft 4. The universal wheels 2 use sealed bearings to prevent dust from entering. The upper universal wheel 2 is limited in movement within the upper guide rail 1, and the lower universal wheel 2 is limited in movement within the lower guide rail 1. The bearing shaft 4 is mounted between the guide rails 1 via the universal wheels 2. Three bearing shafts 4 are installed between two guide rails 1. When the cable 12 collides with the device, the bearings are stressed, causing the universal wheels 2 to move. The direct contact between the cable 12 and the rock wall 11 is changed to contact with the bearing shaft 4, which has a rotatable and drag-reducing buffer function, thereby reducing the friction and rebound force of the cable. An elastic flexible hose 5 is sleeved on the outside of the bearing shaft 4 to further reduce the stress on the cable 12. The elastic flexible hose 5 is made of oil-resistant, wear-resistant, and aging-resistant polyurethane hose. The service life of the device is further increased by increasing the thickness of the hose or by adding an outer wear-resistant braided layer such as nylon braid.

[0024] To prevent the bearings 4 from colliding and causing damage to the device during movement, a limiter 3 is installed on the guide rail 1. The caster wheel 2 moves along the guide rail 1 in a limited manner. Based on the limiter 3 restricting the movement area, the movement areas of the three bearings 4 do not overlap, but it can ensure that the cable 12 is always in contact with at least one bearing 4.

[0025] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0026] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0027] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A drag reduction and buffer device for underground locomotive cables, characterized in that, include: A set of parallel guide rails and bearings installed between the guide rails via casters. The guide rails are arc-shaped and their radii are matched to the radii of the turning or intersection areas of the tunnel. There are at least two bearings and elastic hoses are sleeved on the outside. The guide rails are installed on the rock wall based on a shock-absorbing connection structure.

2. The drag reduction and buffer device for underground locomotive cables according to claim 1, characterized in that, The shock-absorbing connection structure includes a shock absorber connected to the guide rail, a support rod connected to the other end of the shock absorber, and a fixing rivet for fixing the support rod to the rock wall. A shock absorber isolation plate is provided between the shock absorber and the guide rail.

3. The drag reduction and buffer device for underground locomotive cables according to claim 1, characterized in that, The two ends of the two guide rails are connected by a fixed rod.

4. The drag reduction and buffer device for underground locomotive cables according to claim 1, characterized in that, Limiters are installed on the track, and the casters move along the guide track in a limited manner, thereby restricting the movement area based on the limiters.

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