A pneumatic oiling device for double-hard thick coal seam geological conditions

Abstract

The present invention discloses a pneumatic refueling device for use in double-hard thick coal seam geological conditions, comprising: an oil barrel, which is loaded with grease, and the oil barrel is provided with an air inlet and an oil outlet connected to the interior; an oil pipe, the oil pipe being detachably connected to the oil outlet via a connector; an external air pressure pipe and a connecting pipe, one end of the external air pressure pipe being connected to a compressor, and the other end being connected to one end of a connecting pipe, the other end of the connecting pipe being detachably connected to the air inlet via a connector; wherein, when external air pressure is introduced into the oil barrel through the air inlet, the grease inside the oil barrel is compressed by the air pressure and guided out of the oil outlet. The refueling device can conveniently remove the grease from the oil barrel, saves time and effort, is easy to operate, safe and reliable, and the connecting pipe is detachably connected to the air inlet, which greatly facilitates the operation of replacing the oil barrel and improves the refueling efficiency.

Description

Technical Field

[0001] The invention relates to the field of mining equipment, in particular to a pneumatic oiling device used in double-hard thick coal seam geological conditions. Background Art

[0002] Coal mining working faces, multi-machine excavators, coal mining machines, belt conveyors and many other equipment all require large amounts of gear oil and hydraulic oil. The existing refueling method is: each time it is used, a worker needs to lift it with a crane, and then two workers need to hold the oil barrel and tilt it to pour out the grease. However, each barrel of grease weighs more than 170 kilograms, which is very inconvenient to operate under ordinary coal seam conditions. It is both time-consuming and labor-intensive, and there are safety hazards during operation, which is extremely dangerous. Moreover, under the geological conditions of double-hard thick coal seams, the strong mining pressure in the underground tunnels will cause violent vibrations, which will affect the normal use of the refueling device. How to conveniently replace the oil barrels in the vibrating geological conditions of double-hard thick coal seams to efficiently refuel the equipment is also a problem that needs to be faced. Therefore, it is very necessary to propose a pneumatic refueling device for mines under the geological conditions of double-hard thick coal seams that is simple, easy to disassemble and assemble, and easy to refuel, so as to solve the efficiency and safety problems of refueling gear oil and hydraulic oil for underground equipment in coal mines. Summary of the Invention

[0003] In response to the problems and needs raised above, this solution proposes a pneumatic refueling device for use under double-hard thick coal seam geological conditions. Due to the adoption of the following technical features, it can achieve the above technical objectives and bring about many other technical effects.

[0004] The present invention proposes a pneumatic oiling device for use in double-hard thick coal seam geological conditions, comprising:

[0005] An oil barrel, wherein grease is loaded inside and an air inlet and an oil outlet communicating with the inside are opened on the oil barrel;

[0006] an oil pipe, the oil pipe being detachably connected to the oil outlet via a connector;

[0007] an external air pressure pipe and a connecting pipe, wherein one end of the external air pressure pipe is connected to the compressor and the other end is connected to one end of the connecting pipe, and the other end of the connecting pipe is detachably connected to the air inlet through a connector;

[0008] When external air pressure is introduced into the oil barrel through the air inlet, the grease inside the oil barrel is compressed by the air pressure and guided out of the oil outlet.

[0009] In this technical solution, when the grease in the oil barrel needs to be used, the compressor compresses external air into the external air pressure pipe, directing the external air pressure into the air inlet. The external air pressure accumulates above the grease liquid level. As the high-pressure gas in the oil barrel accumulates, high pressure is generated inside the oil barrel. Based on the principle of compressed air as power, the grease flows out through the oil pipe and into the designated container. This refueling device can easily remove grease from the oil barrel, saving time and effort, and is easy to operate, safe and reliable. Moreover, the connecting pipe is detachably connected to the air inlet, greatly facilitating the replacement of oil barrels and improving refueling efficiency.

[0010] In addition, the pneumatic refueling device for use in double-hard thick coal seam geological conditions according to the present invention may also have the following technical features:

[0011] In one example of the present invention, the connector includes:

[0012] a main body portion, the interior of which defines a movement cavity;

[0013] a moving portion adapted in the movement cavity and configured to switch between a first position and a second position along an extension direction of the movement cavity;

[0014] A plurality of telescopic portions are movably provided on the main body in a radial direction perpendicular to the extending direction, one end of each telescopic portion abuts against the moving portion, and the other end of each telescopic portion is capable of switching between an extended position extending outside the main body and a retracted position retracted inside the main body; wherein, when the moving portion is in a first position, the telescopic portion is in the retracted position; and when the moving portion is in a second position, the telescopic portion is in the extended position;

[0015] a clamping portion connected to the main body portion, and configured so that when the main body portion is inserted into the air inlet, the clamping portion and the telescopic portion seal and fasten the main body portion in the air inlet;

[0016] A vent hole is provided on the main body, one end of which is located outside the air inlet and connected to the connecting pipe, and the other end of which is located inside the air inlet and connected to the oil barrel.

[0017] In one example of the present invention, the clamping portion and the main body portion are connected by a thread; wherein, when the main body portion is inserted into the air inlet, the clamping portion is located on the outside of the main body portion at the air inlet, and the telescopic portion is in an extended position and is located on the inside of the main body portion at the air inlet.

[0018] In one example of the present invention, the moving part includes a first moving body, a second moving body, and an intermediate transition body connecting the first moving body and the second moving body arranged along the extension direction, and the outer diameter of the first moving body is smaller than the outer diameter of the second moving body; wherein, when the moving part is in the first position, the telescopic part abuts against the first moving body and is in a retracted position; when the moving part is in the second position, the telescopic part abuts against the second moving body or the intermediate transition body and is in an extended position.

[0019] In one example of the present invention, the connector further includes: a limiting mechanism,

[0020] It is arranged between the main body and the moving part, and is configured to limit the position of the moving part when the moving part is in the second position.

[0021] In one example of the present invention, the limiting mechanism includes:

[0022] A movable groove and a limiting groove are provided on the main body and communicated with the movement cavity;

[0023] a movable column, fixedly connected to the movable portion and adapted to fit within the movable groove;

[0024] an elastic limiting column, elastically and telescopically connected to the outer peripheral wall of the movable portion along the radial direction X, and capable of adapting to the limiting groove to limit the movable portion when the movable portion is in the second position;

[0025] The second elastic member is connected between the moving part and the moving cavity, and is configured so that when the moving part moves from the first position to the second position, the second elastic member causes the moving part to generate an elastic force tending to move from the second position toward the first position.

[0026] In one example of the present invention, a first elastic member is provided on the telescopic portion, and is configured so that when the telescopic portion moves from the retracted position to the extended position, the first elastic member causes the telescopic portion to generate an elastic tendency force to move from the extended position toward the retracted position.

[0027] In one example of the present invention, the portion of the oil pipe located in the oil barrel extends down to the bottom of the oil barrel.

[0028] In one example of the present invention, the oil pipe includes: a hard portion and a flexible portion,

[0029] The hard part is located inside the oil barrel, and the flexible part is located outside the oil barrel, wherein the hard part and the flexible part are connected at the oil outlet through a connector.

[0030] In one example of the present invention, a bending head is provided at the bottom of the hard portion, and an opening of the bending head is not opposite to the bottom wall of the oil barrel.

[0031] Hereinafter, the best embodiment of the present invention will be described in more detail with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. The drawings are only used to illustrate some embodiments of the present invention, but not to limit all embodiments of the present invention thereto.

[0033] Figure 1 Schematic diagram of the structure of a pneumatic refueling device for use in double-hard thick coal seam geological conditions according to an embodiment of the present invention;

[0034] Figure 2 This is a working principle diagram of a pneumatic refueling device for use in double-hard thick coal seam geological conditions according to an embodiment of the present invention;

[0035] Figure 3 is a schematic top view of a connector according to an embodiment of the present invention;

[0036] Figure 4 for Figure 3 AA section view in the figure;

[0037] Figure 5 for Figure 3 BB section view in.

[0038] List of reference numerals:

[0039] Grease 200;

[0040] Refueling device 100;

[0041] Oil drum 110;

[0042] Air inlet 111;

[0043] Oil outlet 112;

[0044] Oil pipe 120;

[0045] hard part 121;

[0046] Bending head 1211;

[0047] flexible portion 122;

[0048] External air pressure tube 130;

[0049] Connecting pipe 140;

[0050] Flexible tube 141;

[0051] Hard tube 142;

[0052] On-off valve 150;

[0053] Connector 160;

[0054] Body part 161;

[0055] Movement cavity 1611;

[0056] Move hole 1612;

[0057] Mobile unit 162;

[0058] First moving body 1621;

[0059] Intermediate transition body 1622;

[0060] Second moving body 1623;

[0061] Mounting slot 1624;

[0062] telescopic portion 163;

[0063] a first elastic member 1631;

[0064] Clamping portion 164;

[0065] vent 165;

[0066] Limiting mechanism 166;

[0067] Active slot 1661;

[0068] Limiting groove 1662;

[0069] Moving bar 1663;

[0070] Elastic limiting column 1664;

[0071] a second elastic member 1665;

[0072] a third elastic member 1666;

[0073] Sealing ring 167;

[0074] Oiler 170;

[0075] Barometer 180;

[0076] Flow meter 190;

[0077] Radial direction X;

[0078] Extension direction Y. DETAILED DESCRIPTION

[0079] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0080] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the invention belongs. The words "first", "second" and similar terms used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not necessarily indicate a quantity limitation. Words such as "include" or "comprising" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0081] According to the present invention, a pneumatic refueling device 100 for use in double-hard thick coal seam geological conditions is provided. Figure 1 、 Figure 2 Shown, including:

[0082] The oil barrel 110 is loaded with grease 200 and is provided with an air inlet 111 and an oil outlet 112 communicating with the interior.

[0083] an oil pipe 120 detachably connected to the oil outlet 112 via a connector 160 ;

[0084] An external air pressure pipe 130 and a connecting pipe 140 , wherein one end of the external air pressure pipe 130 is connected to the compressor, and the other end is connected to one end of the connecting pipe 140 , and the other end of the connecting pipe 140 is detachably connected to the air inlet 111 via a connector 160 ;

[0085] Among them, when the external air pressure is introduced into the oil barrel 110 through the air inlet 111, the grease 200 inside the oil barrel 110 is compressed by the air pressure and discharged out of the oil outlet 112; for example, the external air pressure pipe 130 is connected to the air compressor, and the air compressor compresses the external air to form high-pressure gas and introduces it into the external air pressure pipe 130, and then flows from the external air pressure pipe 130 to the connecting pipe 140, and is introduced into the oil barrel 110 through the connecting pipe 140, thereby forming a high-pressure environment in the oil barrel 110.

[0086] That is, when the grease 200 in the oil barrel 110 needs to be used, the compressor compresses external air and enters the external air pressure pipe 130, causing the external air pressure to be introduced into the air inlet 111. The external air pressure accumulates above the liquid level of the grease 200. As the high-pressure gas in the oil barrel 110 accumulates, high pressure is generated inside the oil barrel 110. Based on the principle of compressed air as power, the grease 200 flows out through the oil pipe 120 and into the oil pot 170. This refueling device can easily remove the grease from the oil barrel, saving time and effort, and is easy to operate, safe and reliable. In addition, the connecting pipe is detachably connected to the air inlet, greatly facilitating the replacement of the oil barrel and improving refueling efficiency.

[0087] In one example of the present invention, the connector 160 includes:

[0088] The main body 161 defines a movement cavity 1611 therein;

[0089] The moving portion 162 is adapted in the movement cavity 1611 and configured to switch between a first position and a second position along an extension direction Y of the movement cavity 1611;

[0090] A plurality of telescopic portions 163 are movably provided on the main body 161 in a radial direction X perpendicular to the extension direction Y. One end of the telescopic portion 163 abuts against the movable portion 162, and the other end of the telescopic portion 163 is capable of switching between an extended position extending outside the main body 161 and a retracted position retracted inside the main body 161. When the movable portion 162 is in a first position, the telescopic portion 163 is in the retracted position; when the movable portion 162 is in a second position, the telescopic portion 163 is in an extended position.

[0091] The clamping portion 164 is connected to the main body 161 and is configured so that when the main body 161 is inserted into the air inlet 111, the clamping portion 164 and the telescopic portion 163 seal and fasten the main body 161 in the air inlet 111;

[0092] The main body 161 is provided with a vent 165 , one end of which is located outside the air inlet 111 and communicates with the connecting pipe 140 , and the other end of which is located inside the air inlet 111 and communicates with the oil barrel 110 ;

[0093] When it is necessary to connect the connecting pipe 140 to the air inlet 111 of the oil barrel 110, first insert the main body 161 of the connecting head 160 into the air inlet 111, then move the moving part 162 and make it move from the first position to the second position. During this process, the multiple telescopic parts 163 all move from the retracted position to the extended position, and then the tightening part cooperates with the multiple telescopic parts 163 to fix and seal the connecting head 160 in the air inlet 111. When it is necessary to connect the connecting pipe 140 to the oil barrel 110, the main body 161 of the connecting head 160 is inserted into the air inlet 111. Then, the moving part 162 is moved from the first position to the second position. During this process, the multiple telescopic parts 163 are moved from the retracted position to the extended position. Then, the tightening part cooperates with the multiple telescopic parts When the air inlet 111 of the barrel is separated, the movable part 162 is first moved from the second position to the first position. During this process, the multiple telescopic parts 163 are moved from the extended position to the retracted position, and finally the connecting head 160 is taken out from the air inlet 111 of the oil barrel 110; the connecting head 160 can greatly simplify the connection method between the connecting pipe 140 and the air inlet 111, and the connection is quick and convenient, which greatly improves the working efficiency of the pneumatic refueling device used in double hard thick coal seam geological conditions.

[0094] It should be noted that the vent hole 165 extends from the upper end of the main body 161 to the lower end thereof. In order to ensure the sealing of the vent hole 165, the position where the vent hole 165 is set cannot be connected with other chambers (for example, the movement chamber 1611, the movable hole 1612 adapted to the telescopic part 163), and the vent hole 165 includes multiple and is spaced apart along the circumferential direction of the main body 161.

[0095] In order to improve the sealing performance of the connection between the main body 161 and the air inlet 111 , a sealing ring 167 is provided between the clamping portion 164 and the air inlet 111 to seal the gap between the main body 161 and the air inlet 111 .

[0096] It is understandable that since the barrel wall thickness of the oil barrel 110 is relatively small, it is difficult to achieve a sealed connection between the connecting pipe 140 and the oil barrel 110 using a conventional threaded connection method. Therefore, the above-mentioned connecting head 160 is required to facilitate flexible disassembly and assembly between the connecting pipe 140 and the oil barrel 110.

[0097] In one example of the present invention, the clamping portion 164 is connected to the main body 161 via a threaded connection; wherein, when the main body 161 is inserted into the air inlet 111, the clamping portion 164 is located outside the main body 161 at the air inlet 111, and the telescopic portion 163 is in an extended position and located inside the main body 161 at the air inlet 111;

[0098] For example, a threaded hole is provided on the clamping portion 164, and an external thread matching the threaded hole is provided on the outer peripheral wall of the main body 161. When the main body 161 is inserted into the air inlet 111, the multiple telescopic portions 163 move to the extended position and abut against the inner wall of the air inlet 111. The plug connector is fixed in the air inlet 111 by screwing the clamping portion 164 and abutting against the outer wall of the air inlet 111. A sinking groove is provided at the air inlet 111, and a sealing ring 167 is sleeved on the main body 161 and adapted in the sinking groove, and is located at the lower end of the clamping portion 164. The sealing ring 167 is pressed by the clamping portion 164 to seal the air inlet 111.

[0099] In one example of the present invention, the connector 160 has a first end and a second end that are connected to each other, the first end is fixedly connected to the hard portion 121, and the second end is fixedly connected to the flexible portion 122;

[0100] The connection between the hard portion 121 and the flexible portion 122 can be facilitated by providing the connecting head 160 .

[0101] In one example of the present invention, the movable portion 162 includes a first movable body 1621, a second movable body 1623, and an intermediate transition body 1622 connecting the first movable body 1621 and the second movable body 1623, arranged along an extension direction Y. The outer diameter of the first movable body 1621 is smaller than the outer diameter of the second movable body 1623. When the movable portion 162 is in a first position, the telescopic portion 163 abuts against the first movable body 1621 and is in a retracted position. When the movable portion 162 is in a second position, the telescopic portion 163 abuts against the second movable body 1623 or the intermediate transition body 1622 and is in an extended position.

[0102] That is to say, the outer diameters of the first movable body 1621 and the second movable body 1623 are both equal-diameter rod-shaped structures, while the outer diameter of the intermediate transition body 1622 is a gradient arc-shaped structure, that is, the outer diameter size of the first movable body 1621 gradually transitions to the outer diameter size of the second movable body 1623; by designing the movable part 162 into the above-mentioned structure, during the downward movement of the movable part 162 along the extension direction Y, the telescopic part 163 begins to gradually move along the extension direction Y along the intermediate transition body 1622 due to the resistance of the outer peripheral wall of the first movable body 1621 and is stopped by the outer peripheral wall of the second movable body 1623; in this process, multiple telescopic parts 163 gradually extend outward from the retracted position and finally move to the extended position; by designing the movable part 162 into the above-mentioned structure, the movement of the movable part 162 in the extension direction Y can be converted into the movement of the telescopic part 163 in the radial direction X.

[0103] In one example of the present invention, Figures 3 to 5 As shown, the connector 160 further includes a limiting mechanism 166,

[0104] It is arranged between the main body 161 and the movable part 162, and is configured to limit the position of the movable part 162 when the movable part 162 is in the second position; by setting the limiting mechanism 166, the stability of the movable part 162 in the second position can be maintained, thereby ensuring the reliability of the telescopic part 163 in the extended position.

[0105] In one example of the present invention, the limiting mechanism 166 includes:

[0106] A movable groove 1661 and a limiting groove 1662 are provided on the main body 161 and communicate with the movement cavity 1611;

[0107] The movable column 1663 is fixedly connected to the movable portion 162 and is adapted to fit within the movable groove 1661;

[0108] The elastic limiting column 1664 is elastically and telescopically connected to the outer peripheral wall of the movable portion 162 along the radial direction X, and can be adapted to the limiting groove 1662 to limit the movable portion 162 when the movable portion 162 is in the second position; that is, a mounting groove 1624 is provided on the movable portion 162, and the elastic limiting column 1664 is arranged in the mounting groove 1624, and a third elastic member 1666 is arranged in the mounting groove 1624, one end of which is fixedly connected to the mounting groove 1624, and the other end of which is fixedly connected to the elastic limiting column 1664; when the elastic limiting column 1664 is located in the motion cavity 1611, the third elastic member 1666 is compressed to have a tendency to move outward. ; When the elastic limiting column 1664 and the movable part 162 move to the limiting groove 1662 along the extension direction Y, the elastic limiting column 1664 is adapted to the limiting groove 1662 under the elastic force of the third elastic member 1666, thereby limiting the position of the movable part 162; when the position of the movable part 162 needs to be released, the elastic limiting column 1664 is pushed into the inside of the moving cavity along the radial direction X from the limiting groove 1662, and the third elastic member 1666 is compressed at this time. When the elastic limiting column 1664 is located in the moving cavity 1611, it moves upward along the extension direction together with the movable part 162 under the action of the second elastic member 1665 described below; for example, the third elastic member 1666 is a compression spring. Of course, the present invention is not limited to this. The elastic limiting column 1664 can also be a spring structure. The elastic structure of the spring itself is used to realize the cooperation between the elastic limiting column 1664 and the limiting groove 1662. Similarly, the elastic limiting column 1664 is pushed along the radial direction X toward the inside of the motion cavity at the limiting groove 1662 to release the position of the moving part 162.

[0109] The second elastic member 1665 is connected between the movable portion 162 and the motion chamber 1611. When the movable portion 162 moves from the first position to the second position, the second elastic member 1665 causes the movable portion 162 to generate an elastic force tending to move from the second position toward the first position. For example, the second elastic member 1665 is a compression spring disposed within the motion chamber 1611 and at the lower end of the movable portion 162. When the movable portion 162 moves from the first position to the second position, the second elastic member 1665 is compressed, causing the movable portion 162 to generate an elastic force tending to move from the second position toward the first position. For example, the second elastic member 1665 is a compression spring.

[0110] For example, in a specific embodiment of the present invention, the movable groove 1661 is provided at the upper end of the limiting groove 1662 , and both the movable groove 1661 and the limiting groove 1662 are provided at the upper end of the main body 161 .

[0111] That is to say, when it is necessary to fix the position of the movable part 162, the movable column 1663 moves downward along the extension direction Y of the movable groove 1661, and the elastic limiting column 1664 moves along the cavity wall of the moving cavity 1611 until the movable part 162 moves to the second position, the elastic limiting column 1664 is opposite to the position of the limiting groove 1662, and the elastic limiting column 1664 pops out into the limiting groove 1662 to fix the position of the movable part 162 (the second position). At this time, the second elastic member 1665 is compressed to generate an elastic tendency force that causes the movable part 162 to move toward the first position; when it is necessary to release the position of the movable part 162, the wave elastic limiting column 1664 causes it to move from the limiting groove 1662 to the moving cavity 1611. At this time, the movable part 162 moves from the second position to the first position under the action of the second elastic member 1665; the above-mentioned limiting mechanism 166 can effectively limit the position of the movable part 162, which is convenient and reliable.

[0112] In one example of the present invention, a first elastic member 1631 is provided on the telescopic portion 163, and is configured so that when the telescopic portion 163 moves from the retracted position to the extended position, the first elastic member 1631 causes the telescopic portion 163 to generate an elastic tendency force to move from the extended position toward the retracted position.

[0113] For example, the first elastic member 1631 is a compression spring, which is mounted on the telescopic portion 163, with one end fixedly connected to the telescopic portion 163, and the other end fixedly connected to the movement cavity 1611. When the telescopic portion 163 moves from the retracted position to the extended position, the first elastic member 1631 is compressed so that the telescopic portion 163 generates an elastic tendency force to move from the extended position toward the retracted position.

[0114] In one example of the present invention, it further includes: an on-off valve 150,

[0115] It is provided on the connecting pipe 140 and is configured to conduct or block the compressed gas from the external air pressure pipe 130 into the oil barrel 110;

[0116] By setting the on-off valve 150, the conduction and closing between the external air pressure pipe 130 and the oil barrel 110 can be flexibly controlled, and then the discharge of the grease 200 in the oil barrel 110 can be controlled. That is, when the grease 200 needs to be discharged, the on-off valve 150 is opened, and when the grease 200 does not need to be discharged, the on-off valve 150 can be closed.

[0117] In one example of the present invention, the on-off valve 150 is a solenoid valve; the solenoid valve can be controlled more conveniently.

[0118] In one example of the present invention, the present invention further includes: a controller,

[0119] It is coupled to the on-off valve 150 and configured to control the on / off valve 150 so as to open or close the on / off valve 150 so as to open or close the compressed gas from the external air pressure pipe 130 into the oil barrel 110 ;

[0120] When the grease 200 in the oil barrel 110 is needed, the controller controls the on-off valve 150 to open, allowing external air pressure to be introduced into the air inlet 111. The external air pressure accumulates above the liquid level of the grease 200. As the high-pressure gas in the oil barrel 110 accumulates, high pressure is generated inside the oil barrel 110. Based on the principle of compressed air as a power source, the grease 200 flows out through the oil pipe 120 and into a designated container. When the grease 200 in the oil barrel 110 is no longer needed, the controller controls the on-off valve 150 to close. This pneumatic refueling device 100 for use in double-hard thick coal seam geological conditions is easy to operate, saves time and effort, and is safe and reliable.

[0121] In one example of the present invention, the connecting pipe 140 is sealedly connected to the oil barrel 110 , and the connecting pipe 140 is located above the liquid level of the grease 200 ;

[0122] For example, the connecting pipe 140 is connected to the oil barrel 110 through a sealing ring 167, and placing the connecting pipe 140 above the liquid level of the grease 200 can allow the external air pressure to directly form a high-pressure environment in the upper space of the oil barrel 110, thereby preventing high-pressure gas from being introduced into the grease 200.

[0123] In one example of the present invention, the portion of the oil pipe 120 located in the oil barrel 110 extends down to the bottom of the oil barrel 110 ;

[0124] This can prevent the oil pipe 120 from being exposed above the grease 200 level as the grease 200 level drops, thereby affecting the grease 200 extraction process of the oil pipe 120 , and can enable the oil pipe 120 to extract the grease 200 in the oil barrel 110 as cleanly as possible.

[0125] In one example of the present invention, the oil pipe 120 includes a hard portion 121 and a flexible portion 122.

[0126] The hard portion 121 is located inside the oil barrel 110 , and the flexible portion 122 is located outside the oil barrel 110 , wherein the hard portion 121 and the flexible portion 122 are connected at the oil outlet 112 via a connector 160 ;

[0127] The hard part 121 and the flexible part 122 are respectively connected to the two sides of the connecting head 160. The hard part 121 can play a shaping role. The hard part 121 is arranged in the oil barrel 110, which can facilitate the oil pipe 120 to be directly inserted into the grease 200 until the bottom of the oil barrel 110, making it more convenient to export the grease 200, and the flexible part 122 can more flexibly operate its shape, making it convenient to export the grease 200 to the oil pot 170; in particular, under the geological conditions of double-hard thick coal seams, the strong mining pressure in the underground tunnel shows violent vibrations. Even if the oil barrel shakes, the part of the oil pipe 120 located outside the oil barrel is connected to the oil barrel through the flexible part 122, so that the oil barrel 110 and the oil pot will not affect each other during the vibration process, thereby avoiding the shaking of the oil barrel 110 and the shaking of the flexible part 122 under vibration conditions, causing oil leakage.

[0128] It should be noted that, similarly, the connecting pipe 140 also includes a flexible pipe 141 and a hard pipe 142. The hard pipe 142 and the flexible pipe 141 are respectively connected to the two sides of the connecting head 160. Under the geological conditions of double hard and thick coal seams, the strong mining pressure in the underground tunnel will cause violent vibrations. Even if the oil barrel shakes, since the external air pressure pipe 130 and the oil barrel 110 are connected through the flexible pipe 141, the external air pressure pipe 130 and the oil barrel 110 will not affect each other during the vibration process, thereby avoiding the shaking of the oil barrel 110 in the case of vibration, which will drive the shaking of the connecting pipe 140 and cause damage to the connecting pipe 140 or the external air pressure pipe 130 and cause air leakage; and the connecting pipe 140 located inside the oil barrel 110 is a hard pipe 142.

[0129] In an example of the present invention, a bending head 1211 is provided at the bottom of the hard portion 121 , and an opening of the bending head 1211 is not opposite to the bottom wall of the oil barrel 110 .

[0130] The bending head 1211 can be provided to prevent the end of the hard portion 121 from directly contacting the bottom of the oil barrel 110 , thereby preventing the conduction of the oil pipe 120 from being affected.

[0131] In one example of the present invention, it further includes: a barometer 180,

[0132] It is arranged between the on-off valve 150 and the oil barrel 110 and is configured to monitor the air pressure information of the external air pressure entering the oil barrel 110 through the on-off valve 150; thereby facilitating real-time monitoring of the air pressure value entering the oil barrel 110.

[0133] In one example of the present invention, the flow meter 190 is further included.

[0134] It is arranged on the oil pipe 120 and configured to monitor the flow information of the grease 200 in the oil pipe 120, thereby facilitating real-time monitoring of the flow value of the grease 200 discharged from the oil barrel 110.

[0135] The above describes in detail an exemplary implementation of the pneumatic refueling device 100 proposed by the present invention for use under double-hard thick coal seam geological conditions with reference to the preferred embodiments. However, those skilled in the art will appreciate that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed by the present invention can be combined in various ways without exceeding the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A pneumatic refueling device for use in double-hard thick coal seam geological conditions, characterized in that: include: An oil barrel (110) is loaded with grease (200) and is provided with an air inlet (111) and an oil outlet (112) communicating with the interior. an oil pipe (120), the oil pipe (120) being detachably connected to the oil outlet (112) via a connector (160); An external air pressure tube (130) and a connecting tube (140), wherein one end of the external air pressure tube (130) is connected to the compressor, and the other end is connected to one end of the connecting tube (140), and the other end of the connecting tube (140) is detachably connected to the air inlet (111) via a connecting head (160); the connecting head (160) comprises: a main body (161), the interior of which defines a motion cavity (1611); a moving part (162), adapted in the motion cavity (1611), configured to be able to switch between a first position and a second position along an extension direction (Y) of the motion cavity (1611); a plurality of telescopic parts (163), movably arranged on the main body (161) in a radial direction (X) perpendicular to the extension direction (Y), one end of the telescopic part (163) abutting against the moving part (162), and the other end of the telescopic part (163) being able to move between a first position and a second position when extending out of the motion cavity (1611). The movable portion (162) switches between an extended position outside the main body (161) and a retracted position retracted inside the main body (161); wherein, when the movable portion (162) is in the first position, the retractable portion (163) is in the retracted position; and when the movable portion (162) is in the second position, the retractable portion (163) is in the extended position; a clamping portion (164) is connected to the main body (161) and is configured such that when the main body (161) is plugged into the air inlet (111), the clamping portion (164) and the retractable portion (163) seal and fasten the main body (161) to the air inlet (111); wherein, a vent hole (165) is provided on the main body (161), one end of which is located outside the air inlet (111) and communicates with the connecting pipe (140), and the other end of which is located inside the air inlet (111) and communicates with the oil barrel (110); When external air pressure is introduced into the oil barrel (110) through the air inlet (111), the grease (200) inside the oil barrel (110) is compressed by the air pressure and discharged out of the oil outlet (112).

2. The pneumatic refueling device for use in double-hard thick coal seam geological conditions according to claim 1 is characterized in that: The clamping portion (164) is connected to the main body (161) via a threaded connection; wherein, when the main body (161) is inserted into the air inlet (111), the clamping portion (164) is located outside the main body (161) at the air inlet (111), and the telescopic portion (163) is in an extended position and located inside the main body (161) at the air inlet (111).

3. The pneumatic refueling device for use in double-hard thick coal seam geological conditions according to claim 1 is characterized in that: The movable portion (162) includes a first movable body (1621), a second movable body (1623) and an intermediate transition body (1622) arranged along an extension direction (Y), and the first movable body (1621) and the second movable body (1623), and the outer diameter of the first movable body (1621) is smaller than the outer diameter of the second movable body (1623); wherein, when the movable portion (162) is in a first position, the telescopic portion (163) abuts against the first movable body (1621) and is in a retracted position; when the movable portion (162) is in a second position, the telescopic portion (163) abuts against the second movable body (1623) or the intermediate transition body (1622) and is in an extended position.

4. The pneumatic refueling device for use in double-hard thick coal seam geological conditions according to claim 3 is characterized in that: The connector (160) further includes a limiting mechanism (166), It is arranged between the main body (161) and the moving part (162), and is configured to limit the position of the moving part (162) when the moving part (162) is in the second position.

5. The pneumatic refueling device for use in double-hard thick coal seams according to claim 4 is characterized in that: The limiting mechanism (166) includes: A movable groove (1661) and a limiting groove (1662) are provided on the main body (161) and are in communication with the movement cavity (1611); A movable column (1663) is fixedly connected to the movable portion (162) and is adapted to fit within the movable groove (1661); an elastic limiting column (1664) elastically and telescopically connected to the outer peripheral wall of the movable portion (162) along the radial direction (X), and capable of being matched with the limiting groove (1662) to limit the movable portion (162) when the movable portion (162) is in the second position; The second elastic member (1665) is connected between the movable portion (162) and the motion cavity (1611), and is configured such that when the movable portion (162) moves from the first position to the second position, the second elastic member (1665) causes the movable portion (162) to generate an elastic force tending to move from the second position toward the first position.

6. The pneumatic refueling device for use in double-hard thick coal seam geological conditions according to claim 1 is characterized in that: The telescopic portion (163) is provided with a first elastic member (1631), which is configured such that when the telescopic portion (163) moves from a retracted position to an extended position, the first elastic member (1631) causes the telescopic portion (163) to generate an elastic force tending to move from the extended position toward the retracted position.

7. The pneumatic refueling device for use in double-hard thick coal seams according to claim 1 is characterized in that: The portion of the oil pipe (120) located inside the oil barrel (110) extends downward to the bottom of the oil barrel (110).

8. The pneumatic refueling device for use in double-hard thick coal seams according to claim 7 is characterized in that: The oil pipe (120) comprises a hard portion (121) and a flexible portion (122). The hard part (121) is located inside the oil barrel (110), and the flexible part (122) is located outside the oil barrel (110), wherein the hard part (121) and the flexible part (122) are connected at the oil outlet (112) via a connector (160).

9. The pneumatic refueling device for use in double-hard thick coal seams according to claim 8, characterized in that: A bending head (1211) is provided at the bottom of the hard portion (121), and an opening of the bending head (1211) is not opposite to the bottom wall of the oil barrel (110).

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