Hydraulic support telescopic beam with net hanging device and support

Abstract

The hydraulic support telescopic beam comprises the net hanging device and a box body, the net hanging device is arranged in the box body, the net hanging device comprises a hook part and a power part, the hook part comprises a hook body and a main shaft, the hook body is hinged to the main shaft, and the power part can be connected with the hook body and the main shaft. The hook body is driven to rotate on the main shaft, and the hook body and the main shaft are driven to extend out of the box body. By arranging the power part and driving the hook body to rotate and the main shaft to extend out of the box body through the power part, automatic net hanging can be achieved, the operation process is simplified, and the net hanging operation efficiency is improved. And meanwhile, personnel entering dangerous areas for operation are reduced, so that potential safety hazards are reduced. And the net hanging device is arranged in the box body, so that the whole structure is more compact, and the device is convenient to install and use on a large-mining-height working face.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mine machinery, and particularly relates to a hydraulic support telescopic beam with a net hanging device and a support for net hanging in the last mining of fully mechanized mining. BACKGROUND

[0002] Before the fully mechanized mining face is penetrated, in order to ensure the safety of the retreat of the fully mechanized mining face, a high-strength flexible net needs to be hung on the roof at a specific position before the fully mechanized mining face is penetrated, and the strength of the flexible net is used to block the gangue falling from the retreating support.

[0003] The net hanging operation is the most risky process during the penetration, especially in the fully mechanized mining face with an ultra-large mining height. Usually, a platform needs to be built manually in the conveyor, and a net anchor cable needs to be constructed in front of the support. During the construction, the construction personnel need to carry the anchor cable drilling machine, tensioning pump head and other equipment to climb the operation. In addition, the existing net hanging operation also needs to set anchor cables and anchor rods on the roof, hang a lifting ring on the roof, and pass a steel wire rope through the lifting ring to hang the flexible net. The existing operation mode has a long construction time, which prolongs the empty roof time of the working face and increases the risk of gangue leakage and roof falling. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to provide a hydraulic support telescopic beam with a net hanging device and a support for net hanging in the last mining of fully mechanized mining, which can reduce manual operation, improve construction efficiency and reduce safety risks.

[0005] In order to solve the above problems, the first aspect of the present application provides a hydraulic support telescopic beam with a net hanging device, which comprises a net hanging device and a box body. The net hanging device is arranged in the box body. The net hanging device comprises a hook part and a power part. The hook part comprises a hook body and a main shaft. The hook body is hinged on the main shaft. The power part can be connected with the hook body and the main shaft respectively to drive the hook body to rotate on the main shaft and drive the hook body and the main shaft to extend out of the box body.

[0006] Optionally, a containing groove is arranged in the box body, and the net hanging device is arranged in the containing groove. One end of the containing groove in the length direction penetrates the box body to form an opening. The power part drives the hook body and the main shaft to slide in the containing groove and enter or exit the containing groove through the opening.

[0007] Optionally, a guide cylinder is arranged in a section of the containing groove close to the opening. The hook body and the main shaft respectively abut the inner wall of the guide cylinder and are slidingly arranged in the guide cylinder.

[0008] Optionally, the hook body is hinged to the main shaft near one end of the opening by a fixing pin, the hook body comprises a hook end and an inclined end, when the hook body is in the accommodating groove, the hook end is located near one side of the opening, the power unit is located on the side of the hook body away from the opening, and is in sliding abutment with the inclined end to drive the hook body to rotate around the fixing pin as the rotation center.

[0009] Optionally, the power unit comprises a fixed unit and a movable unit, the fixed unit is connected in the accommodating groove, the movable unit can move relative to the fixed unit in the length direction of the accommodating groove, and a jacking shaft is arranged on the movable unit and used to abut against the inclined end.

[0010] The power unit comprises a jack or an electric push rod, the fixed unit of the jack or the electric push rod is hinged to the inner wall of one end of the accommodating groove away from the opening, and the jacking shaft is eccentrically arranged on the end face of the movable unit of the jack or the electric push rod; the inclined end comprises a slope bottom and a slope top, the slope top is located on the same side as the hook tip of the hook end, the slope bottom is located on the opposite side of the hook tip, and the slope top is inclined to the hook tip compared with the slope bottom; when the hook body is in the accommodating groove, the jacking shaft abuts against the slope bottom, and when the hook body rotates to the limit position, the jacking shaft abuts against the slope top.

[0011] Optionally, the main shaft is sleeved on the outer circumferential side of the movable unit, a pin shaft is arranged on the movable unit, a sliding groove is arranged on the main shaft and extends in the same direction as the accommodating groove, the pin shaft is slidingly arranged in the sliding groove, and the movable unit drives the main shaft to slide in the accommodating groove through the pin shaft and the sliding groove to enter or exit the accommodating groove.

[0012] An abutting piece is arranged on the outer wall of one end of the main shaft away from the opening, the abutting piece protrudes outward in the radial direction from the outer circumferential wall of the main shaft, an abutting protrusion is arranged on the inner wall of the accommodating groove and located on the side of the abutting piece near the opening, and the abutting piece abuts against the abutting protrusion to form a limit.

[0013] Optionally, a limiting piece is arranged on the main shaft, the limiting piece is arranged opposite to the rotation path of the hook body, and the hook body abuts against the limiting piece when rotating to the limit position on the outer side of the main shaft; the rotation angle range of the hook body is 0°-90°; and the limiting piece is a limiting block or an elastic piece.

[0014] Optionally, the main shaft is provided with a first magnetic member, the accommodating groove is provided with a second magnetic member, the second magnetic member is outside the main shaft, at least one of the first magnetic member and the second magnetic member is an electromagnet, and the main shaft is driven to move into the accommodating groove by a magnetic force.

[0015] In a second aspect, the application provides a support for fully-mechanized mining and net hanging, comprising a hydraulic support telescopic beam with a net hanging device as described above;

[0016] The support further comprises a detection part and a control part, the detection part comprises a pressure sensor, the pressure sensor is arranged on the hook body and located on the outer wall in contact with the net body, for obtaining the tension of the hook body on the net body, the control part is connected with the pressure sensor and the power part respectively, the control part is used for receiving the pressure value obtained by the pressure sensor, and when the pressure value is greater than a preset pressure value and the hook body and the main shaft are not extended to the limit length, the control part controls the power part to drive the hook body and the main shaft to extend out of the box body.

[0017] Optionally, the main shaft is provided with a laser sensor, the laser sensor is arranged towards the extension direction of the main shaft; the box body is provided with a magnetic grating ruler, the magnetic grating ruler is used for obtaining the length of the power part, and the laser sensor and the magnetic grating ruler are connected with the control part respectively.

[0018] Advantages

[0019] The hydraulic support telescopic beam with a net hanging device provided in the embodiment of the application can realize automatic net hanging by arranging the power part and driving the hook body to rotate and the main shaft to extend out of the box body, simplifies the operation process, and improves the net hanging operation efficiency. Meanwhile, personnel entering the dangerous area for operation is reduced, and thus the safety hidden danger is reduced. The net hanging device is arranged in the box body, so that the overall structure is more compact, and the installation and use in the large mining height working face are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic diagram of the hydraulic support telescopic beam with a net hanging device according to the embodiment of the application;

[0021] Figure 2 FIG. 2 is a structural schematic diagram of the hydraulic support telescopic beam in a retracted state according to the embodiment of the application;

[0022] Figure 3 FIG. 3 is a structural schematic diagram of the hydraulic support telescopic beam in an extended state according to the embodiment of the application;

[0023] Figure 4 FIG. 4 is a first structural schematic diagram of the net hanging device according to the embodiment of the application;

[0024] Figure 5 Fig. 2 is a second structural schematic diagram of the hanging device according to an embodiment of the present application;

[0025] Figure 6 Fig. 3 is a third structural schematic diagram of the hanging device according to an embodiment of the present application;

[0026] Figure 7 Fig. 4 is a fourth structural schematic diagram of the hanging device according to an embodiment of the present application;

[0027] Figure 8 Fig. 5 is a structural schematic diagram of the main shaft, the limiting piece and the stopper according to an embodiment of the present application;

[0028] Figure 9 Fig. 6 is a structural schematic diagram of the hook body according to an embodiment of the present application;

[0029] Figure 10 Fig. 7 is a structural schematic diagram of the box according to an embodiment of the present application.

[0030] The reference signs are represented as follows:

[0031] 11, hook body; 12, fixing pin; 13, top shaft; 14, limiting block; 15, pin shaft; 16, main shaft; 17, stopper; 18, jack; 19, pressure sensor; 2, box; 21, guide cylinder; 22, ear plate; 23, laser sensor; 24, magnetic grating. DETAILED DESCRIPTION

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0034] In this application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection", "fixed", and the like, should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, it should be understood that the preferred embodiments described here are only used to illustrate and explain the present application, and are not used to limit the present application.

[0036] In conjunction with Figures 1 to 10 As shown, according to the first aspect of the embodiment of the present application, a hydraulic support telescopic beam with a net hanging device is provided, which comprises a net hanging device and a box 2, the net hanging device is arranged in the box 2, the net hanging device comprises a hook part and a power part, the hook part comprises a hook body 11 and a main shaft 16, the hook body 11 is hinged on the main shaft 16, and the power part can be connected with the hook body 11 and the main shaft 16 respectively to drive the hook body 11 to rotate on the main shaft 16 and drive the hook body 11 and the main shaft 16 to extend out of the box 2.

[0037] By arranging the power part and driving the hook body 11 to rotate and the main shaft 16 to extend out of the box 2 by the power part, automatic net hanging can be realized, the operation process is simplified, and the net hanging operation efficiency is improved. At the same time, personnel entering the dangerous area for operation is reduced, and thus the safety hidden danger is reduced. The net hanging device is arranged in the box 2, so that the overall structure is more compact, and it is convenient to install and use on a large mining height working face.

[0038] Among them, the power part is connected with the hook body 11 and the main shaft 16 respectively, drives the hook body 11 to rotate and moves out of the box 2 at the same time, and also drives the main shaft 16 to move out of the box 2.

[0039] Specifically, the power part drives the hook body 11 to rotate and move out of the box 2 at the same time. After the hook body 11 is rotated in place, the power part continues to drive a part of the main shaft 16 to extend out of the box 2, and the other part is still in the box 2.

[0040] A containing groove is arranged in the box 2, the net hanging device is arranged in the containing groove, one end of the containing groove in the length direction penetrates through the box 2 to form an opening, the power part drives the hook body 11 and the main shaft 16 to slide in the containing groove and in and out of the containing groove through the opening.

[0041] The accommodating groove is arranged in the box 2, that is, the box 2 has a hollow space to form the accommodating groove.

[0042] The accommodating groove is arranged in the box 2, that is, the box 2 has a hollow space to form the accommodating groove.

[0043] The accommodating groove is arranged in the box 2, that is, the box 2 has a hollow space to form the accommodating groove.

[0044] The box 2 can be a cuboid structure, and the accommodating groove is a long slot, and the length direction of the accommodating groove is the same as the length direction of the box 2.

[0045] The guiding cylinder 21 is arranged in a section of the accommodating groove close to the opening, the hook body 11 and the main shaft 16 abut the inner wall of the guiding cylinder 21 and are slidingly arranged in the guiding cylinder 21.

[0046] The guiding cylinder 21 is arranged at the opening of the accommodating groove, the main shaft 16 and the hook body 11 slide in the guiding cylinder 21 and abut the inner wall, the guiding cylinder 21 limits the radial swing of the main shaft 16, the net hanging device is kept vertical and aligned with the roof when the net hanging device is extended, the position precision of the net hanging is improved, and the steel wire rope is prevented from being deviated due to shaking.

[0047] The guiding cylinder 21 is a straight cylinder structure, and the axial direction of the guiding cylinder 21 is the same as the length direction of the accommodating groove.

[0048] When the hook body 11 and the main shaft 16 are in the guiding cylinder 21, the outer peripheral wall slidingly abuts the inner wall of the guiding cylinder 21, so that the guiding cylinder 21 can provide a guiding effect on the movement of the hook body 11 and the main shaft 16.

[0049] The hook body 11 is hinged to one end of the main shaft 16 close to the opening through the fixing pin 12, the hook body 11 includes a hook end and an inclined end, when the hook body 11 is in the accommodating groove, the hook end is located on the side close to the opening, the power part is located on the side away from the opening of the hook body 11 and slidingly abuts the inclined end, so as to drive the hook body 11 to rotate around the fixing pin 12 as the rotation center.

[0050] The hook body 11 is hinged to the main shaft 16 near one end of the opening by a fixing pin 12, the power part abuts against the beveled end of the hook body 11 to drive the hook body 11 to rotate, so that the hook body 11 can rotate flexibly. When not working, the hook body 11 is placed in the accommodating groove to avoid the safety hazard caused by the exposed hook tip. When working, the hook body 11 is erected through the transmission of beveled mechanics, the linear thrust of the power part is converted into the rotary torque by the lever principle of the bevel, which is labor-saving and efficient, and the hinged structure of the fixing pin 12 ensures that the hook body 11 rotates flexibly to adapt to the different state requirements of net hanging and unhooking.

[0051] The hook end is an end of the hook body 11 where the hook tip is located.

[0052] When the hook body 11 is in the accommodating groove, the beveled end is arranged at an angle with the axial direction of the accommodating groove and the moving direction of the power part, so that after the power part and the beveled end abut against each other and slide, the power part can drive the hook body 11 to rotate.

[0053] The end of the hook body 11 near the opening is parallel to the plane where the opening is located. When the power part drives the hook body 11 to rotate, the hook body 11 is also pushed outward in the axial direction of the accommodating groove, that is, the hook body 11 moves outward in the axial direction of the accommodating groove while rotating, and the hook body 11 abuts against the outer wall of the seat body when rotating, which can also provide power for the movement of the hook body 11 in the axial direction of the accommodating groove.

[0054] The power part includes a fixed unit and a movable unit. The fixed unit is connected in the accommodating groove, and the movable unit can move in the length direction of the accommodating groove relative to the fixed unit. A jacking shaft 13 is arranged on the movable unit, and the jacking shaft 13 is used to abut against the beveled end.

[0055] The fixed unit can provide support and power for the movable unit. The movable unit and the jacking shaft 13 arranged thereon can accurately abut against the beveled end, thereby stably driving the hook body 11 to rotate.

[0056] The extension stroke of the movable unit can be accurately controlled by a hydraulic or electric system, so that the thrust size and speed of the jacking shaft 13 can be adjusted to adapt to the hanging force of different specifications of flexible nets and steel wire ropes.

[0057] The end of the jacking shaft 13 abutting against the beveled end is an arc surface. The jacking shaft 13 is long strip-shaped and extends in the length direction of the accommodating groove.

[0058] An ear plate 22 is arranged on the groove wall away from the opening of the accommodating groove, and the end of the fixed unit away from the opening is hinged to the ear plate 22.

[0059] In one possible embodiment, the power unit comprises a jack 18, the fixed unit of the jack 18 is hinged to the inner wall of the receiving groove far from the opening end, and the top shaft 13 is eccentrically arranged on the end face of the movable unit of the jack 18. The beveled end comprises a slope bottom and a slope top, the slope top is located on the same side as the hook tip of the hook end, the slope bottom is located on the opposite side of the hook tip, and the slope top is inclined to the hook tip compared with the slope bottom. When the hook body 11 is in the receiving groove, the top shaft 13 abuts against the slope bottom, and when the hook body 11 rotates to the limit position, the top shaft 13 abuts against the slope top.

[0060] In another possible embodiment, the power unit comprises an electric push rod, the fixed unit of the electric push rod is hinged to the inner wall of the receiving groove far from the opening end, and the top shaft 13 is eccentrically arranged on the end face of the movable unit of the electric push rod. The beveled end comprises a slope bottom and a slope top, the slope top is located on the same side as the hook tip of the hook end, the slope bottom is located on the opposite side of the hook tip, and the slope top is inclined to the hook tip compared with the slope bottom. When the hook body 11 is in the receiving groove, the top shaft 13 abuts against the slope bottom, and when the hook body 11 rotates to the limit position, the top shaft 13 abuts against the slope top.

[0061] Among them, the jack 18 is suitable for high-load scenarios, the output force is stable, and the heavy flexible net hanging of the large mining height working face can be met. The electric push rod has fast response and high control precision, and can realize automatic operation. The top shaft 13 is eccentrically arranged on the end face of the movable unit, cooperates with the slope bottom to slope top structure of the beveled end of the hook body 11, utilizes the eccentric thrust to increase the rotation torque, makes the hook body 11 rotate to the limit position accurately, avoids excessive rotation or rotation not in place, ensures the accuracy and reliability of the net hanging and unhooking actions, and optimizes the mechanical properties of power transmission.

[0062] Among them, the hook body 11 is roughly a cuboid structure, and the hook end and the beveled end are two ends in the length direction. The hook tip is located at a corner of the hook end, and the slope top is located on the same side of the formed cuboid structure as the hook tip.

[0063] Among them, the slope is a flat surface, and the slope top is gradually inclined to the hook tip compared with the slope bottom.

[0064] The main shaft 16 is sleeved on the outer peripheral side of the movable unit, the pin shaft 15 is arranged on the movable unit, and the sliding groove is arranged on the main shaft 16. The sliding groove extends in the same direction as the receiving groove, the pin shaft 15 is slidingly arranged in the sliding groove, and the movable unit drives the main shaft 16 to slide in the receiving groove through the pin shaft 15 and the sliding groove to enter or exit the receiving groove.

[0065] By arranging the pin shaft 15 on the movable unit and the sliding groove on the main shaft 16, and arranging the pin shaft 15 in the sliding groove, the movable unit can drive the main shaft 16 to move, so that the main shaft 16 extends out of the receiving groove.

[0066] The power part pushes the hook body 11 to rotate, and at the same time, pushes the hook body 11 outward along the axial direction of the accommodating groove. When the hook body 11 rotates to the limit position, the pin shaft 15 just abuts against one end of the sliding groove close to the opening, thereby driving the main shaft 16 to move outward along the axial direction of the accommodating groove. The hook body 11 can be rotated to the required limit position, and the main shaft 16 can be stably moved.

[0067] A stop piece 17 is arranged on the outer wall of the end of the main shaft 16 away from the opening, and protrudes outward along the radial direction of the outer peripheral wall of the main shaft 16. A stop protrusion is arranged on the inner wall of the accommodating groove, and is located on the side of the stop piece 17 close to the opening, so as to abut against the stop piece 17 to form a limit.

[0068] The stop piece 17 protrudes outward along the radial direction of the outer peripheral wall of the main shaft 16, and can uniformly bear the impact force when abutting against the stop protrusion, thereby enhancing the movement stability of the main shaft 16, reducing shaking, avoiding mechanical wear caused by excessive extension of the main shaft 16, prolonging the service life of the device, and ensuring the reliability of the net hanging process.

[0069] The stop piece 17 can be a whole circular ring, and can be formed by two half-ring members.

[0070] The outer diameter of the stop piece 17 is greater than the inner diameter of the stop protrusion, so that the stop piece 17 and the stop protrusion are at least partially opposite in the length direction of the accommodating groove, thereby forming a stop.

[0071] The main shaft 16 is provided with a limiting piece, and the limiting block 14 is arranged opposite to the rotation path of the hook body 11. When the hook body 11 rotates to the limit position outward of the main shaft 16, the hook body 11 abuts against the limiting block 14. The rotation angle range of the hook body 11 is 0°-90°.

[0072] The limiting piece is arranged on the main shaft 16 to limit the rotation angle of the hook body 11 to 0°-90°, so as to ensure that the hook body 11 is vertically positioned when hanging the net and is flatly reset when unhooking, thereby avoiding angle deviation to cause the net to be not firm or unhooking to be difficult.

[0073] The direction in which the hook body 11 rotates outward from the accommodating groove is defined as the outward rotation direction, and the limiting piece is arranged in the outward rotation direction of the hook body 11, so as to abut against the limiting piece when the hook body 11 rotates outward to the limit position, thereby achieving limiting.

[0074] The limiting piece is the limiting block 14 or an elastic piece.

[0075] The structure of the limiting components is diversified, which increases the adaptability of the device. The rigid limiting block 14 is suitable for scenarios that require precise angle control, while the elastic component can buffer impact and reduce mechanical wear. Both can effectively prevent the hook 11 from rotating excessively, thereby improving operational safety and the stability of net hanging quality.

[0076] The limiting block 14 is made of a material with a certain degree of rigidity. It can be made of the same material as the hook body 11, such as metal. The elastic element can be a spring, with one end fixed to the outer wall of the main shaft 16 and the other end facing the hook body 11, thus abutting against the hook body 11.

[0077] A first magnetic element is provided on the main shaft 16, and a second magnetic element is provided in the receiving groove. The second magnetic element is located outside the main shaft 16. At least one of the first magnetic element and the second magnetic element is an electromagnet, so as to drive the main shaft 16 to move into the receiving groove by magnetic force.

[0078] The main shaft 16 and the receiving groove are respectively equipped with a first magnetic component and a second magnetic component. Magnetic force drives the main shaft 16 to automatically retract and unhook the wire rope, eliminating the need for manual intervention and further improving the level of automation. The electromagnet's electronic control design allows for precise control of the generation and disappearance of magnetic force, achieving intelligent control of the main shaft 16's movement to adapt to different work process requirements. Simultaneously, magnetic drive reduces power unit energy consumption, shortens operation time, improves energy utilization efficiency and work efficiency, and reduces safety risks.

[0079] The first magnetic component can be disposed on the outer peripheral wall of the main shaft 16, and the second magnetic component can be disposed on the inner wall of the receiving groove. The first magnetic component and the second magnetic component are disposed opposite to each other in the length direction of the receiving groove. When the electromagnet is energized, sufficient attraction is generated, thereby driving the main shaft 16 into the receiving groove to achieve reset.

[0080] According to a second aspect of the embodiments of this application, a support for hanging netting at the end of fully mechanized mining is provided, including a hydraulic support telescopic beam with a netting device as described above.

[0081] The support also includes a detection unit and a control unit. The detection unit includes a pressure sensor 19, such as... Figure 9 As shown, the pressure sensor 19 is installed on the hook body 11 and located on the outer wall in contact with the net body. It is used to obtain the pulling force of the hook body 11 on the net body. The control unit is connected to the pressure sensor 19 and the power unit respectively. The control unit is used to receive the pressure value obtained by the pressure sensor 19, and when the pressure value is greater than the preset pressure value and the hook body 11 and the main shaft 16 have not extended to the limit length, the control unit controls the power unit to drive the hook body 11 and the main shaft 16 to extend out of the box 2.

[0082] Through the linkage of the pressure sensor 19, the control part and the power part, the real-time monitoring and automatic adjustment of the tension in the net hanging process are realized, the net body tension is ensured to be appropriate, at the same time, the damage of the net body or the overload of the device caused by excessive tension is avoided, and the safety and automation level of the net hanging operation are significantly improved.

[0083] Among them, the pressure sensor 19 is fixed on the outer wall of the hook body 11 in contact with the net body, directly detects the tension of the hook body on the net body, that is, the pressure of the net body on the hook body. The signal output end of the pressure sensor 19 is connected with the control part through wire or wireless module, and transmits pressure data in real time.

[0084] Specifically, the net body is the net hung by the hook body 11.

[0085] Among them, the control part can be a control chip, the signal input end of the control part receives the data of the pressure sensor 19, and the output end of the control part is connected with the power part, and then the extension and retraction of the control part are realized by controlling the extension and retraction of the power part.

[0086] Specifically, after the hook body 11 hooks the net body, the pressure sensor 19 detects the tension in real time and transmits it to the control part. If the tension is greater than the preset value, it means that the net body is too tight, and the main shaft has not reached the maximum extension length, the control part instructs the power part to continue to extend, and releases part of the tension by increasing the extension amount of the main shaft. When the main shaft has reached the maximum extension length, the control part does not control the power part to continue to extend.

[0087] As shown in Figure 10 The main shaft 16 is provided with a laser sensor 23, and the laser sensor 23 is arranged in the extension direction of the main shaft 16; a magnetic grating ruler 24 is arranged in the box body, and the magnetic grating ruler 24 is used for acquiring the length of the power part, and the laser sensor 23 and the magnetic grating ruler 24 are respectively connected with the control part.

[0088] Through the cooperation of the laser sensor 23, the magnetic grating ruler 24 and the control part, the precise detection of the extension distance of the net hanging device is realized, the position accuracy of the hook body to the net body is ensured, and the reliability of the net hanging in the fully mechanized mining and the end mining is improved.

[0089] Among them, the laser sensor 23 is fixedly installed on the end face of the extension direction of the main shaft 16, the detection direction of the laser sensor 23 is consistent with the extension direction of the main shaft 16, and the laser sensor 23 faces the area where the net body to be hung is located. The signal output end of the laser sensor 23 is connected with the signal input end of the control part through the cable, and transmits the distance detection data in real time.

[0090] The magnetic scale 24 comprises a magnetic scale and a reading head, the magnetic scale is fixed on the inner wall of the box body 2 along the length direction of the accommodating groove, and the reading head is synchronously moved on the piston rod or the telescopic shaft of the electric push rod of the jack 18 of the power part. The signal output end of the magnetic scale 24 is connected with the control part, and is used for feeding back the real-time telescopic length of the power part.

[0091] The signal output end of the control part is connected with the driving system of the power part, the telescopic action of the power part is controlled according to the feedback data of the laser sensor 23 and the magnetic scale 24, and then the extension distance of the hook body 11 and the main shaft 16 is adjusted.

[0092] When the power part drives the main shaft 16 and the hook body 11 to extend from the box body 2, the laser sensor 23 continuously emits laser to the net body, the real-time distance between the hook body and the net body is obtained by calculating the laser reflection time, and the data is transmitted to the control part. At the same time, the magnetic scale 24 detects the moving distance of the active unit through the reading head, indirectly reflects the extension length of the main shaft 16, and transmits the length data to the control part.

[0093] The optimal butt joint distance of the hook body and the net body and the maximum extension length of the main shaft can be preset through the control part. If the distance detected by the laser sensor 23 is greater than the preset value, and the magnetic scale 24 shows that the main shaft does not reach the maximum extension length, the control part instructs the power part to continue to extend until the hook body approaches the net body. If the distance detected by the laser sensor 23 is less than the preset value, the control part instructs the power part to stop extending or slightly retracting to avoid damaging the net body.

[0094] The magnetic scale 24 can be used to judge whether the main shaft reaches the maximum extension length.

[0095] Those skilled in the art can understand that the above advantageous modes can be freely combined and superimposed without conflict.

[0096] The above is only the preferred embodiment of the present application, and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A hydraulic support telescopic beam with a net hanging device, characterized in that, The device comprises a hanging net device and a box (2), the hanging net device is arranged in the box (2), the hanging net device comprises a hook part and a power part, the hook part comprises a hook body (11) and a main shaft (16), the hook body (11) is hinged on the main shaft (16), the power part can be connected with the hook body (11) and the main shaft (16) respectively, so as to drive the hook body (11) to rotate on the main shaft (16) and drive the hook body (11) and the main shaft (16) to extend out of the box (2).

2. The hydraulic support telescopic beam with a screening device according to claim 1, characterized in that, An accommodating groove is arranged in the box (2), the hanging net device is arranged in the accommodating groove, one end of the accommodating groove in the length direction penetrates the box (2) to form an opening, and the power part drives the hook body (11) and the main shaft (16) to slide in the accommodating groove and in and out of the accommodating groove through the opening.

3. The hydraulic support telescopic beam with the net hanging device according to claim 2, characterized in that, A guide cylinder (21) is arranged in a section of the accommodating groove close to the opening, the hook body (11) and the main shaft (16) are respectively in abutment with the inner wall of the guide cylinder (21) and are slidingly arranged in the guide cylinder (21).

4. The hydraulic support telescopic beam with the net hanging device according to claim 2, characterized in that, The hook body (11) is hinged on one end of the main shaft (16) close to the opening through a fixing pin (12), the hook body (11) comprises a hook end and an inclined end, when the hook body (11) is in the accommodating groove, the hook end is located on one side close to the opening, the power part is located on one side of the hook body (11) away from the opening, and is in sliding abutment with the inclined end, so as to drive the hook body (11) to rotate around the fixing pin (12) as the rotation center.

5. The hydraulic support telescopic beam with the net hanging device according to claim 4, characterized in that, The power part comprises a fixed unit and a movable unit, the fixed unit is connected in the accommodating groove, the movable unit can move relative to the fixed unit in the length direction of the accommodating groove, a top shaft (13) is arranged on the movable unit, and the top shaft (13) is used for abutting against the inclined end; The power part comprises a jack (18) or an electric push rod, the fixed unit of the jack (18) or the electric push rod is hinged on the inner wall of one end of the accommodating groove away from the opening, and the top shaft (13) is eccentrically arranged on the end face of the movable unit of the jack (18) or the electric push rod; The inclined end comprises a slope bottom and a slope top, the slope top is located on the same side as the hook tip of the hook end, the slope bottom is located on the opposite side of the hook tip, the slope top is inclined to the hook tip compared with the slope bottom, when the hook body (11) is in the accommodating groove, the top shaft (13) is in abutment with the slope bottom, and when the hook body (11) rotates to the limit position, the top shaft (13) is in abutment with the slope top.

6. The hydraulic support telescopic beam with the net hanging device according to claim 5, characterized in that, The main shaft (16) is arranged on the outer circumferential side of the movable unit, a pin shaft (15) is arranged on the movable unit, a sliding groove is arranged on the main shaft (16), the sliding groove extends in the same direction as the accommodating groove, the pin shaft (15) is slidingly arranged in the sliding groove, and the movable unit drives the main shaft (16) to slide in the accommodating groove through the pin shaft (15) and the sliding groove, so as to in and out of the accommodating groove. The outer wall of the main shaft (16) away from the opening is provided with a stop piece (17) which protrudes radially outward from the outer peripheral wall of the main shaft (16), and the inner wall of the accommodating groove is provided with a stop protrusion which is located on the side of the stop piece (17) close to the opening and abuts against the stop piece (17) to form a limit.

7. The hydraulic support telescopic prop with a screening device according to claim 1, characterized in that, The main shaft (16) is provided with a limiting piece, and the limiting block (14) is arranged opposite to the rotating path of the hook body (11), and the hook body (11) abuts against the limiting block (14) when rotating to the limit position outside the main shaft (16); The rotating angle range of the hook body (11) is 0°-90°; The limiting piece is a limiting block (14) or an elastic piece.

8. The hydraulic support telescopic prop with a net hanging device according to claim 2, characterized in that, The main shaft (16) is provided with a first magnetic piece, and the accommodating groove is provided with a second magnetic piece which is outside the main shaft (16), and at least one of the first magnetic piece and the second magnetic piece is an electromagnet to drive the main shaft (16) to move into the accommodating groove by magnetic force.

9. A support for a webbing at the end of fully mechanized mining, characterized in that, The hydraulic support telescopic beam with the hanging net device comprises a box body (2), a main shaft (16), a hook body (11) and a power unit, wherein the main shaft (16) is arranged in the box body (2) and is provided with a accommodating groove, the hook body (11) is arranged on the main shaft (16) and is provided with a hooking part (12) which is arranged on the outer wall of the hook body (11) and is used for hooking the net body (3), and the power unit is arranged in the box body (2) and is connected with the main shaft (16) and the hook body (11) to drive the main shaft (16) and the hook body (11) to stretch out of the box body (2). The support further comprises a detection part and a control part, the detection part comprises a pressure sensor (19) arranged on the hook body (11) and located on the outer wall in contact with the net body, and is used for acquiring the tension of the hook body (11) on the net body, the control part is connected with the pressure sensor (19) and the power unit respectively, and is used for receiving the pressure value acquired by the pressure sensor (19) and controlling the power unit to drive the hook body (11) and the main shaft (16) to stretch out of the box body (2) when the pressure value is greater than a preset pressure value and the hook body (11) and the main shaft (16) do not stretch to the limit length.

10. The support for web-slinging in the fully-mechanized mining according to claim 9, characterized in that, The main shaft (16) is provided with a laser sensor (23) which is arranged towards the stretching direction of the main shaft (16), and the box body is provided with a magnetic grating ruler (24) which is used for acquiring the length of the power unit, and the laser sensor (23) and the magnetic grating ruler (24) are connected with the control part respectively.

Images