A flexible telescopic track for a fully mechanized mining face inspection robot

Abstract

The present invention discloses a flexible telescopic track for a fully mechanized mining working face inspection robot, which belongs to the field of coal mine fully mechanized mining technology, and comprises a plurality of rigid tracks, wherein the rigid tracks are fixed on the cable trough cover plate of the side baffle of the scraper conveyor chute through a bracket, and the adjacent rigid tracks are connected through a flexible telescopic mechanism; the flexible telescopic mechanism comprises: an elastic telescopic shaft, and the two ends of the elastic telescopic shaft are respectively provided with connecting ends for sliding, and the two ends of the rigid track are provided with mounting sleeves fixedly matched with the connecting ends. The present invention can well adapt to the dynamic changes and free bending of the track, and can also adapt to the expansion and contraction of the rigid track connection. In addition, the elastic telescopic shaft itself has high wear resistance, resilience and strength, and plays a buffering role for the coal blocks falling between the hydraulic supports, effectively improving the service life of the flexible telescopic track, and ensuring the smooth passage of the inspection robot.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine fully mechanized mining, and in particular relates to a flexible telescopic track for a fully mechanized mining working face inspection robot. Background Art

[0002] In the field of coal mining, the inspection robot track is usually installed on the cable trough cover of the side baffle of the scraper conveyor chute. Each section of the scraper conveyor chute is connected by a hinge pin. When the hydraulic support pushes the chute, it is accompanied by dynamic bending and expansion between the chutes. At the same time, due to the ups and downs of the roadway floor, the track installed on the cable trough cover changes dynamically in the horizontal and vertical directions.

[0003] At present, compression springs are commonly used as flexible rails in the industry, but using compression springs as flexible rails has the following shortcomings:

[0004] 1. Although the compression spring can be compressed, it will break after being stretched to a certain extent and cannot meet the requirements of large-scale stretching and compression;

[0005] 2. The compression spring will be severely deformed and unable to rebound under the impact of the coal blocks falling between the hydraulic supports until it breaks;

[0006] 3. Compression springs are usually made of high-carbon and high-manganese materials, which have poor weldability and cannot be made into quick disassembly and assembly structures;

[0007] 4. When the inspection robot passes through the compression spring, there will be shaking and bumping, and the data and video collected by the inspection robot will be distorted;

[0008] 5. Compression springs made of high-carbon and high-manganese materials are prone to rust when used for a long time in the high temperature and high humidity environment of the fully mechanized mining face.

[0009] Therefore, there is an urgent need for a flexible track that can adapt to such dynamic changes to solve the deficiencies in the prior art. Summary of the invention

[0010] The purpose of the present invention is to provide a flexible telescopic track for a fully mechanized mining working face inspection robot to solve the deficiencies in the prior art.

[0011] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is:

[0012] A flexible telescopic track for a fully mechanized mining face inspection robot comprises a plurality of rigid tracks, wherein the rigid tracks are fixed to a cable trough cover plate of a scraper conveyor chute side baffle plate through a bracket, and adjacent rigid tracks are connected through a flexible telescopic mechanism;

[0013] The flexible telescopic mechanism comprises an elastic telescopic shaft, two ends of which are slidably provided with connecting ends, and two ends of the rigid track are provided with mounting sleeves fixedly matched with the connecting ends.

[0014] Furthermore, the connecting end includes: a fixed sleeve, which is slidably arranged on the outer wall of the elastic telescopic shaft, and the end of the fixed sleeve away from the elastic telescopic shaft is connected to a fixed joint through a countersunk hexagon socket screw, and both ends of the elastic telescopic shaft are provided with sliding grooves, and the fixed joint is slidably arranged in the sliding grooves, and the telescopic range is limited by a limit pin between the fixed sleeve with the fixed joint installed and the elastic telescopic shaft.

[0015] Furthermore, pin holes are provided at both ends of the elastic telescopic shaft, a waist-shaped through groove is provided on the fixed joint, and an installation process groove is provided on the fixed sleeve. The limit pin passes through the waist-shaped through groove of the fixed joint through the installation process groove and is installed in the pin hole of the elastic telescopic shaft, and then the fixed sleeve is rotated 180° to ensure that the limit pin does not fall out.

[0016] Furthermore, a dust exhaust groove is provided on the fixing sleeve.

[0017] Furthermore, a connecting groove is provided inside the elastic telescopic shaft, and the connecting groove connects the slide grooves at both ends of the elastic telescopic shaft. An exhaust hole is provided in the middle of the elastic telescopic shaft, and the exhaust hole is communicated with the connecting groove.

[0018] Furthermore, one end of the fixing joint extending out of the fixing sleeve is symmetrically provided with quick plugs, and locking grooves are provided on both sides of the fixing joint corresponding to each quick plug.

[0019] Furthermore, the installation sleeve includes: a first quick-connect sleeve and a second quick-connect sleeve, the first quick-connect sleeve and the second quick-connect sleeve are welded and fixed, the side end of the first quick-connect sleeve is pre-installed with a fixing bolt, the fixing bolt is used in conjunction with a locking groove of the fixed joint, the first quick-connect sleeve is provided with two centrally symmetrical arc grooves, and the second quick-connect sleeve is provided with a conformal groove adapted to the quick plug.

[0020] Furthermore, the elastic telescopic shaft is made of a polyurethane spring with a Shore hardness of 90HA.

[0021] The flexible telescopic track for a fully mechanized mining working face inspection robot provided by the present invention has the following advantages compared with the prior art:

[0022] The present invention can adapt well to the dynamic changes and free bending of the track, and can also adapt to the expansion and contraction of the rigid track connection. In addition, the elastic telescopic shaft itself has high wear resistance, resilience and strength, which can buffer the coal blocks falling between the hydraulic supports, effectively improve the service life of the flexible telescopic track, and ensure the smooth passage of the inspection robot.

[0023] In addition, the installation method of the present invention in which the connecting end is inserted into the rigid track and rotated and locked can quickly realize the installation, disassembly and replacement of the flexible telescopic track on the working surface, greatly improving the construction and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 is a cross-sectional view of the flexible telescopic mechanism of the present invention;

[0027] Figure 3 It is a front view of the fixed joint of the present invention;

[0028] Figure 4 for Figure 3 Sectional view at AA;

[0029] Figure 5 It is a left side view of the fixed joint of the present invention;

[0030] Figure 6 It is a front view of the fixing sleeve of the present invention;

[0031] Figure 7 for Figure 6 Cross-sectional view at BB;

[0032] Figure 8 is a cross-sectional view of the installation sleeve of the present invention;

[0033] Fig. 9 It is a side view of the rigid track of the present invention.

[0034] In the figure: 1-rigid rail, 2-bracket, 3-chute side baffle, 4-cable trough cover, 5-flexible telescopic mechanism, 6-elastic telescopic shaft, 7-connecting end, 8-mounting sleeve, 9-fixing sleeve, 10-countersunk hexagon socket screw, 11-fixing joint, 12-slide groove, 13-limit pin, 14-waist-shaped through groove, 15-installation process groove, 16-dust exhaust groove, 17-connecting groove, 18-exhaust hole, 19-quick plug, 20-locking groove, 21-first quick plug sleeve, 22-second quick plug sleeve, 23-fastening bolt, 24-arc groove, 25-conformal groove. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0036] refer to Figure 1-9 As shown, the present invention provides a flexible telescopic rail for a comprehensive mining working face inspection robot, comprising a plurality of rigid rail sections 1, wherein the rigid rail 1 is fixed on a cable trough cover plate 4 of a scraper conveyor chute side baffle 3 through a bracket 2, and adjacent rigid rails 1 are connected through a flexible telescopic mechanism 5; the flexible telescopic mechanism 5 comprises: an elastic telescopic shaft 6, wherein both ends of the elastic telescopic shaft 6 are respectively slidably provided with connecting ends 7, and both ends of the rigid rail 1 are provided with mounting sleeves 8 fixedly matched with the connecting ends 7.

[0037] As a preferred embodiment, the connecting end 7 includes: a fixing sleeve 9, the fixing sleeve 9 is slidably arranged on the outer wall of the elastic telescopic shaft 6, the end of the fixing sleeve 9 away from the elastic telescopic shaft 6 is connected to a fixing joint 11 through a countersunk hexagon socket screw 10, both ends of the elastic telescopic shaft 6 are provided with a slide groove 12, the fixing joint 11 is slidably arranged in the slide groove 12, and the telescopic range between the fixing sleeve 9 with the fixing joint 11 and the elastic telescopic shaft 6 is limited by a limit pin 13. Pin holes are provided at both ends of the elastic telescopic shaft 6, a waist-shaped through groove 14 is provided on the fixing joint 11, and an installation process groove 15 is provided on the fixing sleeve 9, and the limit pin 13 passes through the waist-shaped through groove 14 of the fixing joint 11 through the installation process groove 15 and is installed in the pin hole of the elastic telescopic shaft 6. The fixed joint 11 and the fixed sleeve 9 are made of 304 stainless steel. The combined fixed joint 11 and the fixed sleeve 9 are inserted into the elastic telescopic shaft 6. The limit pin 13 is inserted into the pin hole of the elastic telescopic shaft 6 from the installation process groove 15 at the bottom of the fixed sleeve 9, and then the fixed sleeve 9 is rotated 180° to ensure that the limit pin 13 does not fall out. The fixed joint 11 and the fixed sleeve 9 can move smoothly left and right in the slide groove 12 and the outer shaft surface of the elastic telescopic shaft 6 respectively. The limit pin 13 cooperates with the waist-shaped through groove 14 of the fixed joint 11 to not only limit the axial movement of the elastic telescopic shaft 6, but also limit the radial rotation of the elastic telescopic shaft 6. The fixed joint 11, the fixed sleeve 9, the limit pin 13, and the countersunk hexagon socket screw 10 are completely symmetrical on the left and right. When the fixed joints 11 at both ends are fixed, the elastic telescopic shaft 6 can be telescoped left and right into the fixed sleeve 9. Preferably, the end of the fixing joint 11 away from the mounting sleeve 8 is spherical. The spherical structure facilitates the elastic telescopic shaft 6 to slide smoothly when bent, and is also beneficial for protecting the elastic telescopic shaft 6 from being squeezed or cut.

[0038] As a preferred embodiment, a dust discharge groove 16 is also provided on the fixed sleeve 9. The environment of the fully mechanized mining face is harsh, and the elastic telescopic shaft 6 runs for a long time in an environment with high dust and water mist. It is easy to be blocked by coal powder and water vapor during the telescopic process. The dust discharge groove 16 and the installation process groove 15 are both at the bottom of the fixed sleeve 9. When the elastic telescopic shaft 6 slides, the coal powder and water brought into the interior are discharged synchronously. At the same time, the installation process groove 15 is used for the installation of the limit pin 13.

[0039] As a preferred embodiment, a connecting groove 17 is further provided inside the elastic telescopic shaft 6, and the connecting groove 17 connects the slide grooves 12 at both ends of the elastic telescopic shaft 6. A vent hole 18 is provided in the middle of the elastic telescopic shaft 6, and the vent hole 18 communicates with the connecting groove 17. When the elastic telescopic shaft 6 slides left and right along the fixed joint 11, the local air pressure will increase, and the vent hole 18 can effectively exhaust and release the air.

[0040] As a preferred embodiment, the end of the fixed joint 11 extending out of the fixed sleeve 9 is symmetrically provided with a quick plug 19, and the fixed joint 11 is provided with a locking groove 20 on both sides corresponding to each quick plug 19. The installation sleeve 8 includes: a first quick plug sleeve 21 and a second quick plug sleeve 22, the first quick plug sleeve 21 and the second quick plug sleeve 22 are welded and fixed, the side end of the first quick plug sleeve 21 is pre-installed with a fixing bolt 23, the fixing bolt 23 is used in conjunction with the locking groove 20 of the fixed joint 11, the first quick plug sleeve 21 is provided with two centrally symmetrical arc grooves 24, and the second quick plug sleeve 22 is provided with a conformal groove 25 adapted to the quick plug 19. The rigid rail 1 is made of 304 stainless steel pipe, the first quick plug sleeve 21 is processed into two anti-clockwise 90° arc grooves 24, and the second quick plug sleeve 22 has a conformal groove 25 with the same end surface structure as the quick plug 19. The fixing joint 11 passes through the second quick-insertion sleeve 22 and reaches the first quick-insertion sleeve 21, then rotates 90 degrees clockwise, and uses the fixing bolt 23 pre-installed on the side end of the first quick-insertion sleeve 21 to tighten the locking groove 20, thereby completing the installation of the flexible telescopic track.

[0041] As a preferred embodiment, the elastic telescopic shaft 6 is made of a polyurethane spring with a Shore hardness of 90HA, which can adapt well to the dynamic changes and free bending of the track, and can also adapt to the expansion and contraction of the connection of the rigid track 1. In addition, the elastic telescopic shaft 6 itself has high wear resistance, resilience and strength, which can buffer the coal blocks falling between the hydraulic supports, effectively improve the service life of the flexible telescopic track, and ensure the smooth passage of the inspection robot.

[0042] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0043] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0044] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A flexible telescopic track for a fully mechanized mining face inspection robot, characterized in that: It comprises a plurality of rigid rails (1), wherein the rigid rails (1) are fixed on a cable trough cover plate (4) of a scraper conveyor chute side baffle plate (3) through a bracket (2), and adjacent rigid rails (1) are connected through a flexible telescopic mechanism (5); The flexible telescopic mechanism (5) comprises: an elastic telescopic shaft (6), two ends of the elastic telescopic shaft (6) are respectively provided with connecting ends (7) in a sliding manner, and two ends of the rigid track (1) are provided with mounting sleeves (8) fixedly matched with the connecting ends (7); The connecting end (7) comprises: a fixing sleeve (9), the fixing sleeve (9) being slidably arranged on the outer wall of the elastic telescopic shaft (6), the end of the fixing sleeve (9) away from the elastic telescopic shaft (6) being connected to a fixing joint (11) via a countersunk hexagon socket screw (10), both ends of the elastic telescopic shaft (6) being provided with a slide groove (12), the fixing joint (11) being slidably arranged in the slide groove (12), and the telescopic range between the fixing sleeve (9) equipped with the fixing joint (11) and the elastic telescopic shaft (6) being limited by a limit pin (13); Both ends of the elastic telescopic shaft (6) are provided with pin holes, the fixed joint (11) is provided with a waist-shaped through groove (14), the fixed sleeve (9) is provided with an installation process groove (15), the limit pin (13) passes through the waist-shaped through groove (14) of the fixed joint (11) through the installation process groove (15) and is installed in the pin hole of the elastic telescopic shaft (6), and then the fixed sleeve (9) is rotated 180 degrees to ensure that the limit pin (13) does not fall out; A connecting groove (17) is also provided inside the elastic telescopic shaft (6), and the connecting groove (17) connects the slide grooves (12) at both ends of the elastic telescopic shaft (6). An exhaust hole (18) is provided in the middle of the elastic telescopic shaft (6), and the exhaust hole (18) is communicated with the connecting groove (17).

2. The flexible telescopic track for a fully mechanized mining face inspection robot according to claim 1, characterized in that: The fixed sleeve (9) is also provided with a dust discharge groove (16).

3. The flexible telescopic track for a fully mechanized mining face inspection robot according to claim 1, characterized in that: One end of the fixed joint (11) extending out of the fixed sleeve (9) is symmetrically provided with quick plugs (19) in the upper and lower parts, and locking grooves (20) are provided on both sides of the fixed joint (11) corresponding to each quick plug (19).

4. The flexible telescopic track for a fully mechanized mining face inspection robot according to claim 3 is characterized in that: The installation sleeve (8) comprises: a first quick-insert sleeve (21) and a second quick-insert sleeve (22), the first quick-insert sleeve (21) and the second quick-insert sleeve (22) being fixed by welding, a fixing bolt (23) being pre-installed on the side end of the first quick-insert sleeve (21), the fixing bolt (23) being used in conjunction with a locking groove (20) of a fixed joint (11), the first quick-insert sleeve (21) being provided with two centrally symmetrical arc grooves (24), and the second quick-insert sleeve (22) being provided with a conformal groove (25) adapted to the quick plug (19).

5. The flexible telescopic track for a fully mechanized mining face inspection robot according to claim 1, characterized in that: The elastic telescopic shaft (6) is made of a polyurethane spring with a Shore hardness of 90HA.

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