Cable take-up and pay-off frame capable of achieving quick taking and pay-off and take-up and pay-off method

Abstract

The invention relates to the field of cable take-up and pay-off racks, in particular to a cable take-up and pay-off rack capable of achieving quick taking and pay-off and a take-up and pay-off method. According to the cable take-up and pay-off method capable of achieving quick take-up and pay-off, a cable take-up and pay-off frame capable of achieving quick take-up and pay-off is used, the take-up and pay-off frame is mainly composed of a take-up and pay-off barrel, a guide roller, a cable pressing wheel and a tension sensor, and the take-up and pay-off barrel is matched with a signal receiving and sending module used for positioning the driving distance of an engineering vehicle; the front-back driving direction of the engineering vehicle can be automatically judged, corresponding cable winding and unwinding work can be conducted, the starting stage of the engineering vehicle can be recognized in time, cable unwinding work can be conducted in time, and the situation that the cable is seriously abraded due to the fact that the cable bears large dragging stress is avoided. According to the utility model, not only is the defect of local damage of more cable outgoing lines caused by large forward dragging force on the cable generated by an engineering vehicle which is just started overcome, but also the use posture of the overhead cable is improved, the safety performance of the overhead cable is improved, and the service life of the overhead cable is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of cable reels, and in particular to a cable reel for quick access and a method for winding and unwinding cables. Background Art

[0002] The cable reel used in the oil-to-electricity conversion engineering vehicle is a cable management and winding and unwinding device specially designed for electric excavators. Its main function is to ensure that the cable can be wound and unwound orderly during operation, reduce wear, improve work efficiency, and reduce maintenance costs. When the engineering vehicle moves forward, the cable reel continuously unwinds the cable so that the cable can move forward with the engineering vehicle. When the engineering vehicle returns backward, the cable reel timely retracts the unwound cable to avoid the phenomenon that the cable is dragged on the ground and damaged by the engineering vehicle. An intelligent control motor is installed on the cable reel, and this intelligent control motor can automatically perform corresponding cable unwinding or winding actions according to the driving direction of the engineering vehicle. However, in the starting stage when the engineering vehicle moves forward, there is often a short-distance forward impact action. The sudden pulling force brought by the forward impact action will instantaneously straighten the cable, resulting in a sudden increase in the force on the cable. At this time, the existing identifier has unstable recognition of this forward impact action. Therefore, the engineering vehicle just starting will generate a large forward dragging stress on the cable, resulting in many local damage phenomena on the cable, and significantly reducing the service life of the cable. Summary of the Invention

[0003] In order to overcome the drawback that the engineering vehicle just starting will generate a large forward dragging force on the cable, causing many local damages to the cable, the present invention provides a cable reel for quick access and a method for winding and unwinding cables.

[0004] A cable reel for quick access of the present invention includes a support frame, a fixing plate, a mounting frame, a winding and unwinding cylinder, a bidirectional reduction motor, a side bracket, a guiding roller, a vertical guide rail, a slider, a tension spring, and a wire pressing wheel; the support frame is connected with the fixing plate; the fixing plate is connected with the mounting frame; the mounting frame is rotatably connected with the winding and unwinding cylinder; a bidirectional reduction motor for driving the winding and unwinding cylinder to wind and unwind the cable is installed on the mounting frame; the output shaft of the bidirectional reduction motor is fixedly connected with the winding and unwinding cylinder; the mounting frame is connected with the side bracket; the side bracket is rotatably connected with the guiding roller; an outlet cylinder for guiding the cable outlet direction is fixedly connected to the side bracket; a vertical guide rail is fixedly connected to the side bracket and is located between the winding and unwinding cylinder and the guiding roller; a slider is slidably connected to the vertical guide rail; two tension springs are fixedly connected between the slider and the vertical guide rail, and a tension sensor for monitoring the tensile elastic force of the tension spring is installed on the vertical guide rail; a wire pressing wheel for pressing down the cable is rotatably connected to the slider; the cable successively bypasses the wire pressing wheel and the guiding roller and is externally connected to the engineering vehicle; a signal transceiver module for positioning the driving distance of the engineering vehicle is provided on the bidirectional reduction motor and the engineering vehicle.

[0005] Preferably, a wire barrel for guiding the cable toward the crimping wheel is fixedly connected to the mounting frame.

[0006] Preferably, a brush is fixed inside the wire barrel.

[0007] Preferably, the retractable cylinder is composed of two upper and lower limit plate components and a winding drum component between the two limit plate components; a hollow cavity is provided in the retractable cylinder; a plurality of air inlet grooves connected to the hollow cavity are provided on the retractable cylinder; an electric blower for conveying air flow is installed on the retractable cylinder; a plurality of first jet hole structures connected to the hollow cavity are provided on the winding drum component of the retractable cylinder.

[0008] Preferably, the upper limiting disk component and the lower limiting disk component of the retractable cylinder are each provided with a plurality of limiting spacers.

[0009] Preferably, each limiting spacer of the retractable cylinder is provided with a second air injection hole structure connected to the hollow cavity.

[0010] Preferably, a filter screen is fixedly connected to the air inlet groove of the retractable cylinder.

[0011] Preferably, the fixing plate is rotatably connected to the supporting frame.

[0012] Preferably, a plurality of latches are inserted on the fixing plate, and the latches are plugged into the supporting frame.

[0013] The present invention discloses a quick-access cable retracting and releasing method, which uses a guide roller, a wire pressing wheel and a tension sensor to monitor the cable release state, timely identifies the dragging of the cable caused by the engineering vehicle at the starting stage, cooperates with a signal transceiver module for locating the travel distance of the engineering vehicle, and immediately notifies a bidirectional reduction motor to release the cable on the retracting and releasing drum. Beneficial Effects

[0014] The present invention provides a quick-access cable collection and release method, which uses a quick-access cable collection and release rack described in the present invention, which is mainly composed of a collection and release drum and a guide roller, a wire pressing wheel and a tension sensor installed on a side bracket, and cooperates with a signal transceiver module for locating the travel distance of an engineering vehicle. It can not only independently judge the front and rear travel direction of the engineering vehicle and perform corresponding cable collection and release work, but also timely identify the starting stage of the engineering vehicle and perform cable release work in time, thereby avoiding serious wear of the cable due to large drag stress, and at the same time, it can also blow out air from the winding drum component of the collection and release drum to cool the coiled cables. In addition, it can also adjust the upper and lower heights of the collection and release drum and the wire-releasing inclination angle of the side bracket, thereby reducing safety accidents caused by sag of overhead cables and wear caused by downward pressure stress generated by the overhead cables on the guide rollers.

[0015] A cable winding and unwinding rack and method for quick picking and placing provided by the present invention not only overcome the drawback that a newly started engineering vehicle will generate a large forward dragging force on the cable, resulting in more local damage to the cable when it is drawn out, but also improve the use attitude of the overhead cable, and improve the safety performance and service life of the overhead cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Structural diagram of a cable winding and unwinding rack for quick picking and placing according to the present invention; Figure 2 Structural diagram of the mounting rack of a cable winding and unwinding rack for quick picking and placing according to the present invention; Figure 3 Structural diagram of the side bracket of a cable winding and unwinding rack for quick picking and placing according to the present invention; Figure 4 Structural diagram of the winding and unwinding cylinder of a cable winding and unwinding rack for quick picking and placing according to the present invention; Figure 5 Cross-sectional structural diagram of the winding and unwinding cylinder of a cable winding and unwinding rack for quick picking and placing according to the present invention.

[0017] Meanings of the reference numerals in the drawings: 11 - support frame, 12 - fixing plate, 121 - pin, 13 - mounting rack, 131 - wire guide cylinder, 132 - brush, 21 - winding and unwinding cylinder, 2101 - hollow cavity, 2102 - air inlet groove, 2103 - first air jet hole structure, 2104 - second air jet hole structure, 211 - limiting partition strip, 22 - bidirectional reduction motor, 23 - electric blower, 24 - filter screen, 31 - side bracket, 33 - guide roller, 34 - wire outlet cylinder, 35 - vertical guide rail, 36 - slider, 37 - tension spring, 38 - wire pressing wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings. It is hereby declared that the orientation terms such as up, down, left, right, front, back, inside and outside that appear or will appear in the present invention are only based on the drawings of the present invention, and they do not specifically limit the present invention.

[0019] Embodiment 1: A cable winding and unwinding rack for quick picking and placing in this embodiment, as Figures 1 - 5As shown in the figure, it includes a support frame 11, a fixed plate 12, a mounting frame 13, a winding and unwinding cylinder 21, a two-way reduction motor 22, a side support 31, a guiding roller 33, a vertical guide rail 35, a slider 36, a tension spring 37 and a wire pressing wheel 38; the support frame 11 is connected with the fixed plate 12; the fixed plate 12 is connected with the mounting frame 13; the mounting frame 13 is rotatably connected with the winding and unwinding cylinder 21, and the winding and unwinding cylinder 21 is jointly composed of two upper and lower limit disc components and a winding cylinder component between the two limit disc components, and the cable for supplying power to the engineering vehicle is wound on the winding cylinder component of the winding and unwinding cylinder 21; the mounting frame 13 is provided with a two-way reduction motor 22; the output shaft of the two-way reduction motor 22 is fixedly connected with the winding and unwinding cylinder 21; the mounting frame 13 is connected with the side support 31; the side support 31 is rotatably connected with the guiding roller 33; a wire outlet cylinder 34 is welded on the side support 31; the side support 31 is fixedly connected with the vertical guide rail 35, and the vertical guide rail 35 is located between the winding and unwinding cylinder 21 and the guiding roller 33; the vertical guide rail 35 is slidably connected with the slider 36; two tension springs 37 are jointly fixedly connected between the slider 36 and the vertical guide rail 35, and a tension sensor for monitoring the tensile elastic force of the tension spring 37 is installed on the vertical guide rail 35; the slider 36 is rotatably connected with the wire pressing wheel 38, and the height of the wire pressing wheel 38 is lower than the height of the guiding roller 33; the cable successively bypasses the lower side of the wire pressing wheel 38 and the upper side of the guiding roller 33 and is externally connected to the engineering vehicle.

[0020] In this embodiment, the two-way reduction motor 22 and the engineering vehicle are provided with a signal transceiver module for positioning the driving distance of the engineering vehicle.

[0021] The usage method of a cable winding and unwinding rack with quick picking and placing in this embodiment is as follows.

[0022] Pull out the end of the power supply cable wound on the winding cylinder component of the winding and unwinding cylinder 21 outward and successively bypass the lower side of the wire pressing wheel 38 and the upper side of the guiding roller 33, and then pass the end of the power supply cable through the wire outlet cylinder 34 and install it on the electrical connection component of the engineering vehicle, and supply power to the engineering vehicle through the cable. In the initial state, since the height of the wire pressing wheel 38 is lower than the height of the guiding roller 33, the lower side of the wire pressing wheel 38 will be subjected to an upward extrusion force from the cable to pull the slider 36 to drive the tension spring 37 to stretch upward, and at the same time, the tension sensor monitors the magnitude of the elastic force generated by the upward stretching of the tension spring 37, and then an operator manually operates the controller to set a standard value.

[0023] When the engineering vehicle moves away from the winding and unwinding cylinder 21, the just-started engineering vehicle generates a sudden forward movement, which will pull the end of the cable to move, making the part of the cable between the guiding roller 33 and the wire pressing wheel 38 straight. At this time, the straightened cable will further pull the wire pressing wheel 38 and the slider 36 to drive the tension spring 37 to stretch upward. The tension sensor immediately monitors the change in the elastic force generated by the upward stretching of the tension spring 37, first alleviating the tension change brought by this forward movement; secondly, when the elastic force is greater than the standard value, it means that the cable is being stretched. Therefore, a wire releasing instruction is sent to the bidirectional deceleration motor 22 in a timely manner through the circuit system. At this time, the bidirectional deceleration motor 22 drives the winding and unwinding cylinder 21 to continuously rotate forward for wire releasing work, so that the released cable can timely follow the just-started engineering vehicle to move forward, realizing the recognition and alleviation of the starting action of the engineering vehicle through the guiding roller 33, the tension spring 37, the wire pressing wheel 38 and the tension sensor, thereby avoiding the strong dragging stress on the cable caused by the just-started engineering vehicle and causing serious wear. As the engineering vehicle continues to move forward, the signal transceiver module will recognize that the engineering vehicle is in a forward moving state. The signal transceiver module feeds back a signal for continuous wire releasing work to the bidirectional deceleration motor 22 through the circuit system, so that the bidirectional deceleration motor 22 continuously drives the winding and unwinding cylinder 21 to release the cable outward.

[0024] When the engineering vehicle no longer stops moving forward, the signal transceiver module will recognize that the engineering vehicle is in a stopped moving state. And as the cable continues to be released, the tension spring 37 will gradually reset. When the tension spring 37 resets and the tension sensor senses that the standard value is restored, the tension sensor feeds back a signal to stop the wire releasing work to the bidirectional deceleration motor 22 through the circuit system, and the winding and unwinding cylinder 21 stops releasing the cable.

[0025] When the engineering vehicle returns and moves in the direction close to the winding and unwinding cylinder 21, the signal transceiver module will recognize that the engineering vehicle is in a backward moving state during the return journey. At this time, the signal transceiver module feeds back a signal for continuous wire winding work to the bidirectional deceleration motor 22 through the circuit system. The bidirectional deceleration motor 22 drives the winding and unwinding cylinder 21 to continuously rotate in the reverse direction for wire winding work, so that the redundant released cable can be timely retracted into the winding and unwinding cylinder 21 to avoid the phenomenon of the redundant cable dragging on the ground until the signal transceiver module recognizes that the engineering vehicle is in a stopped moving state, and the winding and unwinding cylinder 21 stops winding the cable.

[0026] In this embodiment, as Figure 3 shown, a wire guiding cylinder 131 for guiding the cable towards the wire pressing wheel 38 is fixedly connected to the mounting bracket 13; a brush 132 is fixedly connected inside the wire guiding cylinder 131. When the cable during the winding and unwinding process passes through the wire guiding cylinder 131, the brush 132 can timely clean the foreign matters adhered to the surface of the cable.

[0027] In this embodiment, as Figure 4As shown, several limiting partition strips 211 are provided on the surfaces of the upper limiting disc component and the lower limiting disc component of the winding and unwinding cylinder 21; during the process of winding the cable on the surface of the winding cylinder component of the winding and unwinding cylinder 21, the cable wound on the winding cylinder component of the winding and unwinding cylinder 21 will be separated by the limiting partition strips 211 from the upper limiting disc component and the lower limiting disc component, so that there is a heat dissipation gap between the cable wound on the winding cylinder component of the winding and unwinding cylinder 21 and the upper limiting disc component and the lower limiting disc component, improving the heat dissipation effect of the cable on the winding cylinder component of the winding and unwinding cylinder 21.

[0028] In this embodiment, as Figure 4 and Figure 5 shown, a hollow cavity 2101 is formed inside the winding and unwinding cylinder 21; several air inlet grooves 2102 communicating with the hollow cavity 2101 are provided on the winding and unwinding cylinder 21; an electric blower 23 is installed on the winding and unwinding cylinder 21 to cooperate with the air inlet grooves 2102 and continuously convey air towards the hollow cavity 2101; several first air jet hole structures 2103 communicating with the hollow cavity 2101 are formed on the winding cylinder component of the winding and unwinding cylinder 21; a second air jet hole structure 2104 communicating with the hollow cavity 2101 is formed on each limiting partition strip 211 of the winding and unwinding cylinder 21; a filter screen 24 is fixedly connected to each air inlet groove 2102 of the winding and unwinding cylinder 21, and the air flow will be filtered through the filter screen 24 during the process of flowing through the air inlet grooves 2102; during the process of the bidirectional reduction motor 22 controlling the winding and unwinding of the cable in the forward and reverse directions by the winding and unwinding cylinder 21, the cable will be successively wound and unwound on the wire rod component of the winding and unwinding cylinder 21. When the number of cable turns wound on the wire rod component of the winding and unwinding cylinder 21 is relatively large, when the cable on the winding and unwinding cylinder 21 is energized for a long time, heat will be generated when the current passes through the piled-up cables. At this time, it is necessary for the electric blower 23 to continuously convey air towards the hollow cavity 2101 through the air inlet grooves 2102. Part of the air flow is blown outwards from the first air jet hole structure 2103 of the winding and unwinding cylinder 21, and this part of the air flow will cool down the cable located on the winding cylinder component of the winding and unwinding cylinder 21 from the inside to the outside. At the same time, the remaining air flow is blown outwards from the second air jet hole structure 2104 of the winding and unwinding cylinder 21, and this part of the air flow will directly cool down the cable located on the winding cylinder component of the winding and unwinding cylinder 21 from the outside, avoiding the cable from continuously performing power transmission work in a heat-accumulating environment, improving the service life of the cable, and at the same time, the blown air flow can also blow away the foreign matters remaining on the cable, keeping the cable in a clean and tidy state.

[0029] Embodiment 2: On the basis of Embodiment 1, as Figures 1 - 5 shown, the fixing plate 12 is rotatably connected to the support frame 11; two pins 121 are inserted into the fixing plate 12, and the pins 121 are inserted into the support frame 11.

[0030] In this embodiment, when the engineering vehicle needs to move in other directions with the cable, before that, the staff needs to first pull out the bolt 121 from the support frame 11, and then the staff rotates the fixing plate 12 to adjust the cable outlet direction of the guiding roller 33 until the cable outlet direction of the guiding roller 33 is rotated to be the same as the moving direction of the engineering vehicle. Then the staff inserts the bolt 121 back into the support frame 11 again, so that the fixing plate 12 is fixed on the support frame 11 again through the bolt 121 and cannot rotate. At this time, the guiding roller 33 can stably carry out the cable winding and unwinding work in the advancing direction of the engineering vehicle according to the current angle.

[0031] The above are only examples of the present invention and are not intended to limit the present invention. Any equivalent replacement made within the principle of the present invention shall be included in the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the well-known prior art of those skilled in the art.

Claims

1. A quick access cable storage rack, comprising: a support frame (11); The support frame (11) is connected to a fixing plate (12); the fixing plate (12) is connected to a mounting frame (13); the mounting frame (13) is rotatably connected to a retractable cylinder (21); a bidirectional reduction motor (22) is mounted on the mounting frame (13) for driving the retractable cylinder (21) to retract and release the cable; an output shaft of the bidirectional reduction motor (22) is fixed to the retractable cylinder (21); Its characteristics are: The invention also comprises a side bracket (31); the side bracket (31) is connected to the mounting frame (13); the side bracket (31) is rotatably connected to a guide roller (33); a wire outlet drum (34) for guiding the wire outlet direction of the cable is fixedly connected to the side bracket (31); a vertical guide rail (35) is fixedly connected to the side bracket (31), and the vertical guide rail (35) is located between the retractable drum (21) and the guide roller (33); a slider (36) is slidably connected to the vertical guide rail (35); two tension springs (37) are fixedly connected between the slider (36) and the vertical guide rail (35), and a tension sensor for monitoring the tensile elastic force of the tension spring (37) is installed on the vertical guide rail (35); a wire pressing wheel (38) for pressing the cable downward is rotatably connected to the slider (36); the cable successively bypasses the wire pressing wheel (38) and the guide roller (33) and is externally connected to the engineering vehicle; a signal transceiver module for locating the travel distance of the engineering vehicle is provided on the bidirectional reduction motor (22) and the engineering vehicle.

2. A quick access cable storage rack according to claim 1, characterized in that: A wire barrel (131) is fixedly connected to the mounting frame (13) and guides the cable toward the wire pressing wheel (38).

3. A quick access cable storage rack according to claim 2, characterized in that: A brush (132) is fixedly connected inside the wire barrel (131).

4. A quick access cable storage rack according to claim 1, characterized in that: The retractable cylinder (21) is composed of two upper and lower limit plate components and a winding drum component between the two limit plate components; a hollow cavity (2101) is provided in the retractable cylinder (21); a plurality of air inlet grooves (2102) connected to the hollow cavity (2101) are provided on the retractable cylinder (21); an electric blower (23) for conveying air flow is installed on the retractable cylinder (21); and a plurality of first air jet hole structures (2103) connected to the hollow cavity (2101) are provided on the winding drum component of the retractable cylinder (21).

5. A quick access cable storage rack according to claim 4, characterized in that: The upper limiting disk component and the lower limiting disk component of the retractable cylinder (21) are each provided with a plurality of limiting spacer bars (211).

6. A quick access cable storage rack according to claim 5, characterized in that: A second jet hole structure (2104) connected to the hollow cavity (2101) is provided on each limiting spacer (211) of the retractable cylinder (21).

7. A quick access cable storage rack according to claim 4, characterized in that: A filter screen (24) is fixedly connected to the air inlet groove (2102) of the retractable cylinder (21).

8. A quick access cable storage rack according to claim 1, characterized in that: The fixing plate (12) is rotatably connected to the supporting frame (11).

9. A quick access cable storage rack according to claim 1, characterized in that: A plurality of latches (121) are inserted into the fixing plate (12), and the latches (121) are plugged into the supporting frame (11).

10. A quick access and release cable storage method, the method using a quick access and release cable storage rack according to any one of claims 1 to 9, characterized in that: The guide roller (33), the wire pressing wheel (38) and the tension sensor are used to monitor the cable release state, and the drag on the cable caused by the engineering vehicle at the starting stage is promptly identified. In conjunction with the signal transceiver module used to locate the travel distance of the engineering vehicle, the bidirectional reduction motor (22) is notified immediately to release the cable on the retractable drum (21).

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