Box-type vehicle-mounted electrified cable automatic winding and unwinding device with slip ring

Abstract

The utility model relates to a box type vehicle-mounted electrified cable automatic winding and unwinding device with a slip ring. The blank in the prior art is filled. The underground vehicle-mounted cable drum device comprises a cable drum frame and a slip ring box and further comprises a cable unhooking device, the cable unhooking device comprises a stand column, a rotary table and a cable guide frame, the stand column is fixed to a matched flat mine car and located in front of the cable drum frame, and the rotary table is arranged at the top of the stand column and located in front of the cable drum frame. The cable guide frame comprises two guide plates and a telescopic cylinder or an electric telescopic rod, the two guide plates are provided with an upper row of short rollers and a lower row of short rollers, each of the upper row of short rollers and the lower row of short rollers comprises a plurality of horizontal short rollers, a pair of lugs is arranged at the top of the rotating table, and the middle of the cable guide frame is hinged to the lugs. The two ends of the telescopic cylinder or the electric telescopic rod are hinged to the near-end end of the cable guide frame and the side wall of the rotating table respectively. The box-type vehicle-mounted electrified cable automatic winding and unwinding device with the slip ring can greatly reduce the number of underground workers, and is particularly suitable for coal mine enterprises.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of automatic winding and releasing device of car-mounted power cable with slip ring box. BACKGROUND

[0002] In the prior art, the cable for fully mechanized coal mining machine is laid on the cable hook of the roof or sidewall of the track roadway, a cable drum frame and a slip ring box are arranged on the flat car of the track roadway, the end of the cable for fully mechanized coal mining machine is fixed on the cable drum, and the cable is connected to the fully mechanized mining equipment such as the coal mining machine in front of the working face through the slip ring box. During the fully mechanized coal mining process, the fully mechanized coal mining machine and the hydraulic support need to advance with the working face, and the cable for fully mechanized coal mining machine is manually removed from the cable hook and wound on the cable drum frame by the staff.

[0003] A cable hook removing device for a mine train is disclosed in Chinese Utility Model Patent No. CN217563173U, which was granted on October 11, 2022, and has a publication number of CN217563173U. The cable hook removing device includes a mounting bracket and a rotating member. The mounting bracket is used to be arranged on the vehicle body of the mine train. The rotating member is rotatably arranged on the mounting bracket and is used to lift and rollingly contact the cable. The cable hook removing device can replace manual operation to achieve the hooking of the cable.

[0004] Chinese Invention Patent No. CN115258826B, which was granted on August 1, 2023, and has a publication number of CN115258826B, discloses a method and system for calculating the input torque of a cable reel motor based on the length of the cable. The method includes calculating the mass of the cable on the cable reel, calculating the inner diameter of the cable reel when it is wound with three turns of cable, calculating the diameter of the cable reel when it is wound with cable, calculating the moment of inertia of the cable on the cable reel, calculating the acceleration of the cart mechanism, calculating the maximum angular acceleration of the cable reel when it is wound with cable, calculating the torque required to drive the cable reel, calculating the torque required to overcome the mass of the cable, calculating the torque required to overcome the maximum acceleration of the cable drum, and calculating the input torque of the cable reel motor. The invention is based on the change in the inertia of the cable wound on the reel during cable winding, and controls the torque output by the cable reel motor.

[0005] The cable for fully mechanized equipment is thick and heavy, difficult to bend, and needs to be driven by a motor to rotate. It is not suitable for inertia calculation and control of the torque output by the cable reel motor.

[0006] When the advancing speed of the fully mechanized coal mining face is basically unchanged, the speed of the flat mine car carrying the cable drum device and the cable drum device recovering the cable should also be consistent with the advancing speed of the fully mechanized coal mining face. However, during the process of recovering the cable by the cable drum device, the winding radius of the outermost cable gradually increases layer by layer, which causes the speed of recovering the cable to be difficult to be consistent with the moving speed of the flat mine car carrying the cable drum device. If the speed of recovering the cable by the cable drum device is too fast, the cable is easily damaged; if the speed of recovering the cable by the cable drum device is too slow, the cable is easily accumulated in front of the flat mine car carrying the cable drum device.

[0007] In order to improve the safety of coal mines, based on the safety concept of "fewer people are safer, no people are safer", major coal mining enterprises strictly control the number of people working underground. However, the prior art lacks an underground vehicle-mounted power cable drum device convenient for automatic control and a method of underground cable winding and power supply, and 8 or 9 workers often need to work together to recover the underground cable. SUMMARY

[0008] The technical problem to be solved by the utility model is how to fill the gap in the prior art, and provide a sliding ring box type vehicle-mounted power cable automatic winding and unwinding device suitable for automatic control.

[0009] To solve the above technical problems, the utility model underground vehicle-mounted power cable reel device includes cable reel frame and slip ring box, the cable reel frame is fixed on the matching flat car, is equipped with cable reel and line arranging device on the cable reel frame, is equipped with reel drive motor to the cable reel, reel drive motor directly or all through transmission mechanism indirectly drives cable reel, the line arranging device includes lead screw sliding block mechanism and line arranging drive motor, when the lead screw rotates, can drive the sliding block to move left and right along the guide rail, two vertical guide rollers are equipped on the sliding block, the motor control circuit includes memory, processor and computer program stored on the memory and can run on the processor, reel drive motor and line arranging drive motor are connected with the signal output end of the processor, are controlled by it, its characterized in that: it also includes cable unhooking device, the cable unhooking device includes stand, rotating table and cable guide frame, the stand is fixed on the matching flat car and is located in the front of cable reel frame, and the rotating table sets up at the top of stand, the cable guide frame includes two guide plates and a telescopic cylinder or electric telescopic rod, two guide plates are equipped with upper row short roller and lower row short roller, and the upper row short roller and the lower row short roller all include a plurality of horizontal short rollers, a pair of lugs are equipped on the top of rotating table, the middle part of cable guide frame is hinged on the lug, and the two ends of telescopic cylinder or electric telescopic rod are hinged on the proximal end of cable guide frame and the side wall of rotating table respectively, adjust the length of telescopic cylinder or electric telescopic rod, can drive the distal end of cable guide frame to rise or fall, the line speed sensor sets up on the matching flat car or its drive car and is connected with the signal input end of the processor, the slip ring box is built-in slip ring box that sets up in the cable reel, one end of the cable is connected with the underground matching power supply, the other end passes between two guide plates and upper row short roller and lower row short roller, after passing between two vertical guide rollers, enters built-in slip ring box through the cable reel, is connected with the matching fully mechanized coal mining equipment through built-in slip ring box, supplies power for the matching fully mechanized coal mining equipment, and can be wound on the cable reel.

[0010] Thus design, when using, cable unhooking device can replace 4-5 workers to complete cable unhooking work, under the control of processor, when winding each layer cable, cable reel rotates at appropriate angular velocity respectively, so as to ensure that the winding speed of the outermost cable of current cable reel always keeps consistent with the moving speed of matching flat car and the recovery speed of working face, winding cable, recovering working face.

[0011] As optimization, the upper and lower edges of the guide plate are wavy, and the upper and lower row short rollers thereon are wavy arranged. Thus design, can appropriately increase the contact area between cable guide frame and cable.

[0012] The utility model uses the aforementioned cable reel device with slip ring box type vehicle-mounted power cable automatic winding and unwinding device to carry out the cable winding power supply method for fully mechanized coal mining equipment, including the following steps:

[0013] I. The rotation time of the cable drum when recovering the downhole cable is divided into: the time period t1 of winding the first layer of cable, the time period t2 of winding the second layer of cable, the time period t3 of winding the third layer of cable, the time period t4 of winding the fourth layer of cable, …, the time period t of winding the nth layer of cable. n ,

[0014] II. The above time periods t1, t2, t3, t4, …, t are calculated. n In order to make the linear speed of the cable drum recovering the cable equal to the moving speed of the matched flat car, the angular speed ω1, ω2, ω3, ω4, …, ω of the cable drum rotation should be kept. n ;

[0015] III. The above time periods t1, t2, t3, t4, …, t are calculated. n In order to make the slider of the cable arranging device move uniformly from one end of the guide rail to the other end, the angular speed ω1 / , ω2 / , ω3 / , ω4 / …… ω n / ;

[0016] IV. The t1, ω1, ω1 / , t2, ω2, ω2 / , t3, ω3, ω3 / , t4, ω4, ω4 / …… t n , ω n , ω n / are grouped into the memory of the motor control circuit;

[0017] V. After the cable passes through the cable guide frame and the cable arranging device, it is fixed on the drum body of the cable drum and connected to the matched fully-mechanized mining equipment (not shown in the figure) through the slip ring box. Before starting, the slider of the cable arranging device and the cable are close to one side, and under the control of the controller, the matched flat car starts at the same time, and the drum driving motor and the cable arranging driving motor are started synchronously, and the rotation of the drum driving motor and the cable arranging driving motor is controlled in time sequence:

[0018] In the t1 period, the angular speed of the rotation of the drum driving motor is controlled as ω1, and the angular speed of the rotation of the cable arranging driving motor is controlled as ω1 / ;

[0019] In the t2 period, the angular speed of the rotation of the drum driving motor is controlled as ω2, and the angular speed of the rotation of the cable arranging driving motor is controlled as ω2 / ;

[0020] In the t3 period, the angular velocity of the drum driving motor is controlled as ω3, and the angular velocity of the cable driving motor is controlled as ω3 / ;

[0021] In the t4 period, the angular velocity of the drum driving motor is controlled as ω4, and the angular velocity of the cable driving motor is controlled as ω4 / ;

[0022] …

[0023] In the t n period, the angular velocity of the drum driving motor is controlled as ω n , and the angular velocity of the cable driving motor is controlled as ω n / , until the cable is wound on the cable drum, wherein n is a positive integer.

[0024] Thus, the cable drum mechanical structure is unchanged, and the cable outer diameter is the same. Only the first to fourth steps are needed before use, and then the cable drum of the utility model can automatically adjust the winding period length of each layer of cable and the angular velocity of the drum driving motor and the cable driving motor during rotation according to the moving speed of the matched flat car.

[0025] As an optimization, in the first step: the winding period of each layer of cable = the winding cable length of the layer ÷ the moving speed of the matched flat car, that is, t1, t2, t3…tn are calculated as follows:

[0026] t1 = the first layer winding cable length L1 ÷ V;

[0027] t2 = the second layer winding cable length L2 ÷ V;

[0028] t3 = the third layer winding cable length L3 ÷ V;

[0029] t4 = the fourth layer winding cable length L4 ÷ V;

[0030] …

[0031] t n = the n layer winding cable length L n ÷ V; L1 - L n The existing spiral length calculation formula can be used, or the actual measurement method can be used.

[0032] In the second step: the angular velocity of the cable drum during winding each layer of cable = the moving speed of the matched flat car × the cosine value of the spiral angle of the current cable layer ÷ the winding radius of the layer = the moving speed of the matched flat car × the square of the winding length of the current cable layer minus the square of the spiral lead of the current layer of cable to obtain the square root of the difference ÷ the ratio of the winding length of the cable layer, the winding radius of the layer of cable,

[0033] i.e. ω1, ω2, ω3, ω4……ω n The calculation method is as follows:

[0034]

[0035] In the third step: the angular velocity of the wire drive motor when winding each layer of cable = the length of the stroke of the slider on the lead screw ÷ the pitch of the lead screw, multiplied by 2Π, and finally divided by the time period of winding each layer of cable. The pitch of the lead screw is equal to the current

[0036] i.e. ω1 / , ω2 / , ω3 / , ω4 / ……ω n / The calculation method is as follows:

[0037] ω1 / = (L ÷ 4R2) × 2Π ÷ t1;

[0038] ω2 / = (L ÷ 4R2) × 2Π ÷ t2;

[0039] ω3 / = (L ÷ 4R2) × 2Π ÷ t3;

[0040] ω4 / = (L ÷ 4R2) × 2Π ÷ t4;

[0041] …

[0042] ωn / = (L ÷ 4R2) × 2Π ÷ t n ,

[0043] Wherein: R1 is the outer radius of the cable drum cylinder, R2 is the outer radius of the cable to be reeled in or out, V is the moving speed of the flat plate mine car, Π is the circular constant, L is the axial width of the wire groove of the drum, and the spiral lead of each layer of cable is L-2R2, which is equal to the length of the stroke of the slider on the lead screw. Such design is simple, convenient and fast.

[0044] As an optimization, L1, L2, L3, L4……L n The calculation method is as follows:

[0045]

[0046] Such design, through simple calculation, the length of the first layer of cable wound on the cable drum L1 to the length of the n layer of cable wound on the cable drum L n can be obtained when the cable is recovered, without actual measurement or using the existing spiral wire length calculation formula.

[0047] As optimization, the cable portion between the cable winder and the proximal end of the chock is sagged in an arc shape, the winch drive motor and the cable winder drive motor are both servo motors, and are respectively provided with a speed regulating knob. In the fifth step: when the winch drive motor and the cable winder drive motor are controlled to rotate, the cable between the cable winder and the proximal end of the chock is observed by the worker, the lowest point height of the cable is controlled within a predetermined range, when the lowest point of the cable is lower than the lower limit, the worker adjusts the speed regulating knob of the winch drive motor to increase the angular velocity of the winch drive motor until the lowest point of the cable returns to the predetermined range; when the lowest point of the cable is higher than the upper limit, the worker adjusts the speed regulating knob of the winch drive motor to reduce the angular velocity of the winch drive motor until the lowest point of the cable returns to the predetermined range.

[0048] Under normal circumstances, the downhole vehicle-mounted power cable winch device of the utility model can automatically recover the cable under the control of the controller. However, due to manufacturing defects or use wear or adhesion of sundries or extrusion deformation, the cable may have a slight diameter change, which may cause a difference between the actual winding recovery speed of the cable and the theoretical speed. If the speed is too fast, the cable may be damaged, and if the speed is too slow, the cable capacity between the cable winder and the proximal end of the chock may sag. With such a design, although the downhole vehicle-mounted power cable winch device of the utility model is mainly controlled automatically, manual intervention is used in necessary cases to ensure safety.

[0049] The box type vehicle-mounted power cable automatic winding and unwinding device of the utility model can greatly reduce the number of workers for recovering the cable underground. Originally, 8 or 9 workers were needed to cooperatively recover the cable, but only one worker is needed, and the worker only needs to occasionally intervene in the control, and can remotely intervene, which is particularly suitable for use in coal mining enterprises. BRIEF DESCRIPTION OF DRAWINGS

[0050] The box type vehicle-mounted power cable automatic winding and unwinding device of the utility model will be further described below with reference to the drawings:

[0051] Figure 1 is a three-dimensional structure schematic diagram of the use state of the downhole vehicle-mounted power cable winch device of the utility model;

[0052] Figure 2 is Figure 1 is a left view schematic diagram of the cable winch frame, the cable winch, the cable winder and the slip ring box thereon;

[0053] Figure 3 is a schematic diagram of the relationship between the unwinding of the first layer of cable on the cable winch and the helical pitch of the cable of the layer;

[0054] Figure 4 is a schematic diagram of the relationship between the unwinding of the second layer of cable on the cable winch and the helical pitch of the cable of the layer;

[0055] Figure 5 is a schematic diagram of the relationship between the unwinding of the third layer of wound cable and the helical lead of the cable on the cable drum;

[0056] Figure 6 is a schematic diagram of the relationship between the unwinding of the fourth layer of wound cable and the helical lead of the cable on the cable drum;

[0057] Figure 7 is a schematic diagram of the relationship between the unwinding of the n layer of wound cable and the helical lead of the cable on the cable drum.

[0058] Figures 3-7 The double-dot line in the figure indicates the omission of drawing;

[0059] Figures 3-7 The single-dot line in the figure indicates the distance from the distal end of the unwound cable of each layer to the axis of the cable drum.

[0060] In the figure: 1 is a cable drum frame, 2 is a flat plate mine car, 3 is a cable drum, 4 is a wire arranging device, 5 is a drum driving motor, 6 is a transmission chain-sprocket mechanism, 7 is a wire arranging driving motor, 8 is a lead screw, 9 is a guide rail, 10 is a sliding block, 11 is a vertical guide roller, 12 is a cable, 13 is a vertical column, 14 is a rotating table, 15 is a cable guide frame, 151 is a guide plate, 152 is a horizontal short roller, 16 is a telescopic cylinder or an electric telescopic rod, 17 is a lug, 18 is an internal slip ring box, 19 is an observation backboard, 20 is a rotating table driving motor, which drives the rotating table 14 to rotate around the axis of the vertical column 13 through a planetary gear mechanism (not shown in the figure).

[0061] L is the axial width of the wire containing ring groove of the cable drum 3, L1 is the length of the first layer of wound cable, L2 is the length of the second layer of wound cable, L3 is the length of the third layer of wound cable, L4 is the length of the fourth layer of wound cable, L n is the length of the n layer of wound cable, R1 is the outer radius of the barrel of the cable drum 3, R2 is the outer radius of the cable 12, and X is the helical lead of each layer of cable. DETAILED DESCRIPTION

[0062] Embodiment one: as Figures 1-7As shown, the utility model discloses a cable automatic winding and unwinding device with slip ring box type vehicle-mounted power cable, including cable drum frame 1 and slip ring box, this cable drum frame 1 is fixed on the flat car 2, is equipped with cable drum 3 and wire arranging device 4 on the cable drum frame 1, and cable drum 3 is equipped with drum drive motor 5, and drum drive motor 5 drives cable drum 3 through transmission chain - sprocket mechanism 6, and wire arranging device 4 includes lead screw sliding block mechanism and wire arranging drive motor 7, the lead screw sliding block mechanism includes screw rod 8, guide rail 9 and sliding block 10, and the axial line of screw rod 8 and the axial line of guide rail 9 are all parallel with the axial line of cable drum 3, the sliding block 10 is slidably fixed on the guide rail 9, and the threaded through hole is opened on the sliding block 10, and is rotated on the screw rod 8 through the threaded through hole, when the screw rod 8 rotates, can drive the sliding block 10 along the guide rail 9 left and right movement, be equipped with two vertical guide rollers 11 on the sliding block 10, and cable 12 passes through between two vertical guide rollers 11, the motor control circuit includes memory, processor and the computer program (not shown in the drawing) stored on the memory and can be run on the processor.Drum drive motor 5 and wire arranging drive motor 7 are connected with the signal output end of the processor, are controlled, and its characterized in that: it also includes cable unhooking device, the cable unhooking device includes stand 13, rotating platform 14 and cable guide frame 15, the stand 13 is fixed on the flat car 2, and is located in front of the cable drum frame 1, and rotating platform 14 is arranged at the top of stand 13, the cable guide frame 15 includes two guide plates 151 and a telescopic cylinder or electric telescopic rod 16, two guide plates 151 are equipped with upper row short roller and lower row short roller, and the upper row short roller and the lower row short roller all include a plurality of horizontal short rollers 152, the rotating platform 14 top is equipped with a pair of lugs 17, the middle part of the cable guide frame 15 is hinged on the lug 17, and the telescopic cylinder or electric telescopic rod 16 two ends are hinged on the cable guide frame 15 near end and the rotating platform 14 side wall respectively, adjust the length of telescopic cylinder or electric telescopic rod 16, can drive the distal end of the cable guide frame 15 to rise or fall, the line speed sensor (not shown in the drawing) is arranged on the flat car 2 or the driving car, and is connected with the signal input end of the processor, the slip ring box is the built-in slip ring box 18 arranged in the cable drum, one end of cable 12 is connected with the underground power supply (not shown in the drawing), the other end passes through between two guide plates 151 and upper row short roller and lower row short roller, after passing between two vertical guide rollers 11, enters the built-in slip ring box 18 through the cable drum 3, is connected with the fully mechanized coal mining equipment (not shown in the drawing) through the built-in slip ring box 18, is powered for the fully mechanized coal mining equipment, and can be wound on the cable drum 3.

[0063] The utility model discloses a cable automatic winding and unwinding device with slip ring box type vehicle-mounted power cable for cable winding power supply method of fully mechanized coal mining equipment, including the following steps:

[0064] I. The rotation time of the cable drum 3 when recovering the downhole cable is divided into: the time period t1 of winding the first layer of cable, the time period t2 of winding the second layer of cable, the time period t3 of winding the third layer of cable, the time period t4 of winding the fourth layer of cable, …, the time period t of winding the nth layer of cable. n ,

[0065] II. The above time periods t1, t2, t3, t4, …, t are calculated. n The angular velocities ω1, ω2, ω3, ω4, …, ω that the cable drum 3 should maintain in order to make the linear speed of the cable drum 3 recovering the cable equal to the moving speed V of the associated flat car. n ;

[0066] III. The above time periods t1, t2, t3, t4, …, t are calculated. n The angular velocities ω1, ω2, ω3, ω4, …, ω that the cable drum 3 should maintain in order to make the linear speed of the cable drum 3 recovering the cable equal to the moving speed V of the associated flat car. / , / , / , / , n / ;

[0067] IV. The t1, ω1, ω1 / , t2, ω2, ω2 / , t3, ω3, ω3 / , t4, ω4, ω4 / , …, t n , ω n , ω n / are grouped into the memory of the motor control circuit.

[0068] V. After the cable 12 passes through the cable guide 15 and the cable arranging device 4, it is fixed on the barrel of the cable drum 3 and connected to the associated fully-mechanized mining equipment (not shown in the figure) through the slip ring box 18. Before starting, the slider 10 of the cable arranging device 4 and the cable 12 are close to one side. Under the control of the controller, the associated flat car 2 starts at the same time, and the drum driving motor 5 and the cable arranging driving motor 7 are started synchronously and the rotation of the drum driving motor 5 and the cable arranging driving motor 7 is controlled in time sequence:

[0069] In the time period t1, the angular velocity of the rotation of the drum driving motor 5 is controlled to be ω1, and the angular velocity of the rotation of the cable arranging driving motor 7 is controlled to be ω1 / ;

[0070] In the time period t2, the angular velocity of the rotation of the drum driving motor 5 is controlled to be ω2, and the angular velocity of the rotation of the cable arranging driving motor 7 is controlled to be ω2 / ;

[0071] At the t3 period, the angular velocity of the drum driving motor 5 is controlled as ω3, and the angular velocity of the cable driving motor 7 is controlled as ω3 / ;

[0072] At the t4 period, the angular velocity of the drum driving motor 5 is controlled as ω4, and the angular velocity of the cable driving motor 7 is controlled as ω4 / ;

[0073] …

[0074] At the t n period, the angular velocity of the drum driving motor 5 is controlled as ω n , and the angular velocity of the cable driving motor 7 is controlled as ω n / , until the cable 12 is evenly wound on the cable drum 3, wherein n is a positive integer.

[0075] In the first step: the period of winding each layer of cable = the winding length of the layer ÷ the moving speed V of the flat car, i.e. t1, t2, t3…tn, the calculation method is as follows:

[0076] t1 = the winding length L1 of the first layer ÷ V;

[0077] t2 = the winding length L2 of the second layer ÷ V;

[0078] t3 = the winding length L3 of the third layer ÷ V;

[0079] t4 = the winding length L4 of the fourth layer ÷ V;

[0080] …

[0081] t n = the winding length L n of the n-th layer ÷ V;

[0082] In the second step: the angular velocity of the cable drum 3 rotating when winding each layer of cable = the moving speed V of the flat car × the cosine value of the helix angle of the current cable layer ÷ the winding radius of the layer = the moving speed of the flat car × the square of the winding length of the current cable layer minus the square of the helix lead of the current layer ÷ the square root of the difference ÷ the winding radius of the layer,

[0083] i.e. ω1, ω2, ω3, ω4…ω n , the calculation method is as follows:

[0084]

[0085]

[0086] In the third step: the angular velocity of the wire arranging driving motor 7 when winding each layer of cable = the length of the stroke of the slider 10 on the lead screw 8 (i.e. the distance between the left and right stops of the midpoint of the slider 10 on the track 9, the same below) ÷ the pitch of the lead screw 8, multiplied by 2Π, and finally divided by the time period of winding each layer of cable. The pitch of the lead screw 8 is equal to the current

[0087] That is, ω1 / , ω2 / , ω3 / , ω4 / ……ω n / The calculation method is as follows:

[0088] ω1 / = (L ÷ 4R2) × 2Π ÷ t1;

[0089] ω2 / = (L ÷ 4R2) × 2Π ÷ t2;

[0090] ω3 / = (L ÷ 4R2) × 2Π ÷ t3;

[0091] ω4 / = (L ÷ 4R2) × 2Π ÷ t4;

[0092] …

[0093] ωn / = (L ÷ 4R2) × 2Π ÷ t n ,

[0094] Wherein: R1 is the outer radius of the barrel of the cable drum 3, R2 is the outer radius of the cable 12, V is the moving speed of the flat car 2, Π is the circular constant, L is the axial width of the wire groove of the cable drum 3 (i.e. the distance between the two side guards or guardrails), the helical pitch X of each layer of cable is equal to L-2R2, and is equal to the length of the stroke of the slider 10 on the lead screw 8.

[0095] L1, L2, L3, L4……L n The calculation method is as follows:

[0096]

[0097]

[0098] The cable 12 between the cable winder 4 and the proximal end of the fairlead 15 is curved downward, the drum drive motor 5 and the cable winder drive motor 7 are both servo motors, and each is provided with a speed adjusting knob (not shown in the figure). In the fifth step: the controller controls the rotation of the drum drive motor and the cable winder drive motor, and the staff directly or remotely observes the cable 12 between the cable winder 4 and the proximal end of the fairlead 15 through the camera. The cable 12 is provided with an observation backboard (provided with scale lines) at the rear.

[0099] The lowest point of the cable 12 is controlled within a predetermined range. When the lowest point of the cable 12 is lower than the lower limit, the staff adjusts the speed adjusting knob of the drum drive motor 5 to increase the angular velocity of the drum drive motor 5 (for example, to 1.1 times), until the lowest point of the cable 12 returns to the predetermined range. When the lowest point of the cable 12 is higher than the upper limit, the staff adjusts the speed adjusting knob of the drum drive motor 5 to reduce the angular velocity of the drum drive motor 5 (for example, to 0.9 times), until the lowest point of the cable 12 returns to the predetermined range. (If necessary, the angular velocity of the cable winder drive motor 7 is appropriately increased or decreased at the same time).

Claims

1. A kind of belt slip ring box type vehicle-mounted power cable automatic winding and releasing device, including cable reel frame, slip ring box and motor control circuit, the cable reel frame is fixed on the flat car, cable reel and wire arrangement device are equipped on the cable reel frame, the cable reel is equipped with reel drive motor, reel drive motor drives cable reel, the wire arrangement device includes screw block mechanism and wire arrangement drive motor, when wire arrangement drive motor drives screw rotation, it can drive slider to move left and right along guide rail, two vertical guide rollers are equipped on the slider, the motor control circuit includes memory, processor and the computer program stored in memory and can be run on processor, reel drive motor and wire arrangement drive motor are connected with the signal output end of the processor, are controlled by it, it is characterized in that: It also includes a cable hooking device, the cable hooking device includes a column, a rotating table and a guide, the column is fixed on the matching flat car and located in front of the cable drum frame, the rotating table is arranged at the top of the column, the guide includes two guide plates and a telescopic cylinder or an electric telescopic rod, the two guide plates are provided with upper and lower rows of short rollers, the upper and lower rows of short rollers each include a plurality of horizontal short rollers, a pair of lugs is arranged at the top of the rotating table, the middle of the guide is hinged on the lugs, and the telescopic cylinder or the electric telescopic rod is hinged at the ends on the proximal end of the guide and the side wall of the rotating table, respectively, the length of the telescopic cylinder or the electric telescopic rod is adjusted, so that the distal end of the guide is lifted or lowered, the matching flat car or the driving car thereof is provided with a linear speed sensor, the linear speed sensor is connected with the signal input end of the processor, the slip ring box is an internal slip ring box arranged in the cable drum, one end of the cable is connected with the underground matching power supply, the other end passes between the two guide plates and the upper and lower rows of short rollers, passes between the two vertical guide rollers, enters the internal slip ring box through the cable drum, is connected with the matching fully mechanized mining equipment through the internal slip ring box, supplies power for the matching fully mechanized mining equipment, and can be wound on the cable drum.

2. The belt and slide ring case type vehicle mounted power cable automatic winding and unwinding device according to claim 1, characterized in that: The upper and lower edges of the guide plate are in a wave shape, and the upper and lower rows of short rollers thereon are arranged in a wave shape.

3. The belt and slide ring case type vehicle mounted power cable automatic winding and unwinding device according to claim 1, characterized in that: The cable part between the wire arranging device and the proximal end of the guide is in an arc shape, the drum driving motor and the wire arranging driving motor are servo motors, and are respectively provided with speed adjusting knobs.

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