Cable drum for new energy excavator

Abstract

The cable drum for the new energy excavator comprises a drum base, mandrels are fixedly connected to the left side and the right side of the middle of the upper end of the drum base through supports, the mandrels are connected with a reel through bearings, a cable arrangement mechanism is arranged on the rear side of the drum base, and a torque motor is arranged on the front side of the drum base. The torque motor is in transmission connection with the reel through a chain, the reel is in transmission connection with the cable arrangement mechanism through a chain, a power cable is wound outside a barrel of the reel, a current collector is installed in the barrel of the reel, one end of the power cable is led out from a cable conveying port of the cable arrangement mechanism, and the other end of the power cable is electrically connected with the junction box through the current collector. An electric control box is arranged on the front side of the junction box, and the junction box and the torque motor are both electrically connected with the electric control box. The fixed power supply can directly provide a power supply for the excavator, charging is not needed, multiple times of energy conversion is avoided, the energy utilization efficiency is improved, meanwhile, the excavator can work at high power for a long time, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile power supply for excavators, and in particular to a cable reel for new energy excavators. Background Art

[0002] With its excellent performance, efficient operation ability and versatility, excavators play an irreplaceable role in various infrastructure construction, mining, urban demolition and other fields. However, traditional fuel excavators are noisy, energy-intensive and polluting, and cannot meet the national requirements for energy conservation, environmental protection, low noise and no environmental pollution gas emissions.

[0003] Under the national dual-carbon strategy, electric new energy excavators are a new trend and a new trend with broad prospects. Using lithium batteries to provide energy and power for excavators can not only better meet the country's requirements for energy conservation and environmental protection, but also significantly reduce noise pollution, avoid harmful gas emissions, and contribute to environmental protection. However, lithium battery excavators have poor endurance, slow charging, and fast battery decay. They have limitations for application scenarios that require large torque or instantaneous high power, which greatly reduces work efficiency. Therefore, it is of great significance to develop a simple and efficient new energy excavator power supply device to eliminate the hidden dangers of lithium batteries, increase product safety, extend endurance, and solve the power supply and transmission problems of new energy excavators. Summary of the invention

[0004] In view of the above technical problems in the related art, the present invention provides a cable reel for a new energy excavator, which can solve the above problems.

[0005] To achieve the above technical objectives, the technical solution of the present invention is implemented as follows: A cable reel for a new energy excavator comprises a reel base, wherein the left and right sides of the middle portion of the upper end of the reel base are fixedly connected with a spindle through a support, the spindle is connected to the reel through a bearing, a cable arrangement mechanism is provided on the rear side of the reel base, a torque motor is provided on the front side of the reel base, the torque motor is connected to the reel through a chain drive, the reel is connected to the cable arrangement mechanism through a chain drive, a power cable is wound around the outside of the reel body, a current collector is installed inside the reel body, one end of the power cable is led out from the cable delivery port of the cable arrangement mechanism, and the other end is electrically connected to a junction box through the current collector, an electric control box is provided on the front side of the junction box, and the junction box and the torque motor are both electrically connected to the electric control box.

[0006] Furthermore, a cable arrangement mechanism mounting plate for mounting the cable arrangement mechanism is provided on the rear side of the upper end of the drum machine base, a reel mounting plate for mounting the support is provided on the middle part of the upper end of the drum machine base, a torque motor mounting plate for mounting the torque motor and an electric control box mounting plate for mounting the electric control box are provided on the front side of the upper end of the drum machine base, and the cable arrangement mechanism mounting plate and the reel mounting plate are both in two pieces and are symmetrically distributed on the left and right.

[0007] Furthermore, each of the two cable arranging mechanism mounting plates is connected to a cable arranging mechanism base, two parallel support rods are fixedly connected between the two cable arranging mechanism bases, a rotatable bidirectional screw rod is also connected between the two cable arranging mechanism bases via a bearing, the bidirectional screw rod is located in the middle of the two support rods, a sprocket three is provided on the left end of the bidirectional screw rod, and the bidirectional screw rod is connected to a cable guide frame via a threaded fit.

[0008] Furthermore, the cable guide frame includes a top plate and a bottom plate arranged in parallel, the top plate and the bottom plate are connected by multiple pairs of vertical nylon rollers, and the top plate and the bottom plate are respectively provided with multiple horizontal nylon rollers. The cable delivery opening in the middle of the cable guide frame is in an eight-shaped shape.

[0009] Furthermore, the front and rear sides of the cable guide are slidably connected to the two parallel support rods through four rollers respectively.

[0010] Furthermore, a lifting screw is provided at the upper end of the support, the support is connected to the spindle via a key, the right end of the spindle on the right side is provided with the junction box, and sprocket 1 and sprocket 2 are connected to the baffle on the left side of the reel.

[0011] Furthermore, the torque motor is a three-phase asynchronous motor, a hysteresis coupling is provided at the output shaft end of the torque motor, the output gear on the torque motor is transmission-connected to the second sprocket through a chain, and the first sprocket is transmission-connected to the third sprocket through a chain.

[0012] Furthermore, the reel includes a hollow cylinder, circular baffles are provided at both ends of the cylinder, a circular baffle ring is connected to the circumference of the baffle via a support rod, a cylinder cover is fixed to the cylinder via bolts, and a wire outlet bucket is also welded to the cylinder.

[0013] The beneficial effects of the present invention are as follows: the present application can realize that a fixed power source directly provides power to the excavator without charging, avoids multiple energy conversions, improves energy utilization efficiency, and enables the excavator to achieve long-term high-power operation, greatly improving work efficiency; the present application adopts a cable arrangement mechanism to store cables and guide the cables to move along a predetermined path, which can ensure that the cables are arranged in an orderly and regular manner layer by layer during the retrieval and release process, thereby reducing problems such as cable entanglement and knotting, and improving the reliability and service life of the equipment; the torque motor of the present application is driven by a three-phase asynchronous motor plus a hysteresis coupling, which can absorb overload impact without damaging mechanical parts, and can start and stop smoothly, which can not only provide reliable overload protection and starting smoothness, but also extend the service life of the equipment and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] The present invention is further described in detail below with reference to the accompanying drawings.

[0016] Figure 1 It is a structural schematic diagram of a cable reel for a new energy excavator according to an embodiment of the present invention; Figure 2 It is a left view of a cable reel for a new energy excavator according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a reel stand according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the connection between the cable arrangement mechanism base, the bidirectional screw rod, the support rod and the cable guide frame according to an embodiment of the present invention; Figure 5 It is a top view of the connection between the reel and the support according to an embodiment of the present invention.

[0017] In the figure: 1. Drum base; 11. Cable arrangement mechanism mounting plate; 12. Reel mounting plate; 13. Torque motor mounting plate; 14. Electric control box mounting plate; 2. Cable arrangement mechanism; 21. Cable arrangement mechanism base; 22. Bidirectional screw rod; 23. Support rod; 24. Cable guide; 25. Sprocket three; 3. Reel; 31. Drum cover; 32. Wire outlet bucket; 33. Sprocket one; 34. Sprocket two; 4. Torque motor; 5. Electric control box; 6. Junction box; 7. Support; 8. Spindle; 9. Eye screw. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0019] like Figure 1-5 As shown, according to the present invention, a cable reel for a new energy excavator is disclosed, comprising a reel base 1, wherein the left and right sides of the middle part of the upper end of the reel base 1 are fixedly connected with a spindle 8 through a support 7, and the spindle 8 is connected to the reel 3 through a bearing, and a cable arrangement mechanism 2 is arranged on the rear side of the reel base 1, and a torque motor 4 is arranged on the front side of the reel base 1, and the torque motor 4 is connected to the reel 3 through a chain drive, and the reel 3 is connected to the cable arrangement mechanism 2 through a chain drive, and a power cable is wound around the outside of the cylinder of the reel 3, and a current collector is installed inside the cylinder of the reel 3, one end of the power cable is led out from the cable transmission port of the cable arrangement mechanism 2, and the other end is electrically connected to a junction box 6 through the current collector, and an electric control box 5 is arranged on the front side of the junction box 6, and the junction box 6 and the torque motor 4 are both electrically connected to the electric control box 5.

[0020] Embodiment 1: like Figure 1 , 3 As shown, a cable arrangement mechanism mounting plate 11 for mounting the cable arrangement mechanism 2 is provided on the rear side of the upper end of the drum machine base 1, a reel mounting plate 12 for mounting the support 7 is provided on the middle part of the upper end of the drum machine base 1, and a torque motor mounting plate 13 for mounting the torque motor 4 and an electric control box mounting plate 14 for mounting the electric control box 5 are provided on the front side of the upper end of the drum machine base 1, the number of the cable arrangement mechanism mounting plate 11 and the reel mounting plate 12 are both two and are symmetrically distributed on the left and right, the main body of the drum machine base 1 is welded by channel steel, the structure is simple and has good bearing capacity and stability, and can realize the horizontal integration of the reel 3, cable arrangement mechanism 2, torque motor 4 and electric control box 5, thereby improving the overall compactness and operation convenience of the equipment and having high space utilization.

[0021] Embodiment 2: like Figure 1 , 2As shown in , 4, a cable rafting mechanism 2 is provided on the cable rafting mechanism mounting plate 11, and the cable rafting mechanism 2 includes two symmetrically arranged cable rafting mechanism bases 21, which are fixed to the cable rafting mechanism mounting plate 11 by bolts, and the cable rafting mechanism bases 21 are connected by two front and rear parallel support rods 23, and a rotatable bidirectional screw rod 22 is also provided between the cable rafting mechanism bases 21 through bearings, and the bidirectional screw rod 22 is located between the front and rear parallel support rods 23, and a sprocket three 25 is provided on the left end of the bidirectional screw rod 22, and the bidirectional screw rod 22 cooperates with the cable guide frame 24 through threads, and the cable guide frame 24 can be moved left and right by rotating the bidirectional screw rod 22, and the front and rear sides of the cable guide frame 24 are slidably connected to the two parallel support rods 23 through four rollers respectively.

[0022] The cable guide 24 includes a top plate and a bottom plate arranged in parallel, and the top plate and the bottom plate are connected by multiple pairs of vertical nylon rollers. The top plate and the bottom plate are also respectively provided with multiple horizontal nylon rollers. The cable delivery opening in the middle of the cable guide 24 has a small opening on the front side and a large opening on the rear side, forming an eight-shaped cable delivery opening. The arrangement of nylon rollers, nylon rollers and eight-shaped cable delivery openings are all conducive to the extraction of power cables.

[0023] Embodiment three: like Figure 2 , 3 As shown in , 5, the reel mounting plate 12 is respectively fixed with left and right supports 7 by bolts, the upper ends of the supports 7 are provided with eye screws 9, a non-rotatable spindle 8 is fixedly connected to the support 7 by a key, a junction box 6 is provided at the right end of the spindle 8 on the right side, the spindle 8 is connected to the reel 3 through a bearing, a collector is provided in the reel 3, so as to realize the electrical connection when the reel 3 rotates relative to the spindle 8, a cylinder cover 31 is fixed to the cylinder of the reel 3 by bolts, a wire outlet bucket 32 ​​is welded to the cylinder of the reel 3, and a sprocket 1 33 and a sprocket 2 34 are connected to the baffle on the left side of the reel 3; the torque motor mounting plate 13 is fixed to the torque motor 4 by bolts, the output gear on the torque motor 4 is connected to the sprocket 2 34 through a chain, the sprocket 1 33 is connected to the sprocket 3 25 through a chain, and the electric control box mounting plate 14 is fixed to the electric control box 5 by bolts.

[0024] The torque motor 4 is a three-phase asynchronous motor, and a hysteresis coupling is provided at the output shaft end of the motor. The output gear on the torque motor 4 is connected to the sprocket wheel 2 34 through a chain. The sprocket wheel 2 34 drives the sprocket wheel 1 33 and the reel 3 to rotate relative to the spindle 8. The sprocket wheel 1 33 is connected to the sprocket wheel 3 25 through a chain. The sprocket wheel 3 25 drives the bidirectional screw rod 22 to rotate so that the cable guide frame 24 moves left and right in a circular motion.

[0025] In order to facilitate understanding of the above technical solution of the present invention, the above technical solution of the present invention is described in detail below through a typical working mode of a cable reel for a new energy excavator.

[0026] Working principle: First, the cable reel for the new energy excavator is hoisted on the rear frame of the new energy excavator through the lifting screw 9 to ensure that it is stable and does not hinder the movement of the excavator. The power and control cables of the excavator are connected on the junction box 6 to realize the electrical connection with the slip ring assembly of the collector. The carbon brush assembly of the collector is connected to the fixed power supply through the power cable, which can realize the electrical connection between the rotating part and the fixed part. When the excavator is running and moving, the electric control box 5 controls the torque motor 4 to work and drives the reel 3 to rotate forward and reverse to control the retraction and release of the cable. The retraction and release of the cable is synchronized with the movement of the excavator, and the fixed power supply directly provides power to the excavator in real time. In addition, the cable reel adopts the cable arrangement mechanism 2 to store the cable and guide the cable to move along the predetermined path to ensure that the cable is arranged in an orderly and regular manner layer by layer during the retraction and release process, thereby reducing problems such as cable entanglement and knotting.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable reel for a new energy excavator, comprising a reel base (1), characterized in that: A spindle (8) is fixedly connected to the left and right sides of the middle of the upper end of the drum base (1) through a support (7); the spindle (8) is connected to the reel (3) through a bearing; a cable arrangement mechanism (2) is provided on the rear side of the drum base (1); a torque motor (4) is provided on the front side of the drum base (1); the torque motor (4) is connected to the reel (3) through a chain drive; the reel (3) is connected to the cable arrangement mechanism (2) through a chain drive; a power cable is wound around the outside of the drum body of the reel (3); a current collector is installed inside the drum body of the reel (3); one end of the power cable is led out from the cable delivery port of the cable arrangement mechanism (2); the other end is electrically connected to a junction box (6) through the current collector; an electric control box (5) is provided on the front side of the junction box (6); the junction box (6) and the torque motor (4) are both electrically connected to the electric control box (5).

2. A cable reel for a new energy excavator according to claim 1, characterized in that: A cable arrangement mechanism mounting plate (11) for mounting the cable arrangement mechanism (2) is provided at the rear side of the upper end of the drum machine base (1), a reel mounting plate (12) for mounting the support (7) is provided at the middle part of the upper end of the drum machine base (1), and a torque motor mounting plate (13) for mounting the torque motor (4) and an electric control box mounting plate (14) for mounting the electric control box (5) are provided at the front side of the upper end of the drum machine base (1), and the number of the cable arrangement mechanism mounting plate (11) and the number of the reel mounting plate (12) are both two and they are symmetrically distributed.

3. The cable reel for a new energy excavator according to claim 1, characterized in that: A cable arranging mechanism base (21) is connected to each of the two cable arranging mechanism mounting plates (11), two parallel support rods (23) are fixedly connected between the two cable arranging mechanism bases (21), a rotatable bidirectional screw rod (22) is also connected between the two cable arranging mechanism bases (21) via a bearing, the bidirectional screw rod (22) is located between the two support rods (23), a sprocket wheel three (25) is provided on the left end of the bidirectional screw rod (22), and the bidirectional screw rod (22) is connected to a cable guide frame (24) via a threaded fit.

4. A cable reel for a new energy excavator according to claim 3, characterized in that: The cable guide (24) comprises a top plate and a bottom plate arranged in parallel, the top plate and the bottom plate being connected via a plurality of pairs of vertical nylon rollers, the top plate and the bottom plate being respectively provided with a plurality of horizontally placed nylon rollers, and the cable delivery opening in the middle of the cable guide (24) being in an eight-shaped shape.

5. A cable reel for a new energy excavator according to claim 4, characterized in that: The front and rear sides of the cable guide (24) are slidably connected to the two parallel support rods (23) via four rollers respectively.

6. The cable reel for a new energy excavator according to claim 3, characterized in that: A lifting screw (9) is provided at the upper end of the support (7), the support (7) is connected to the spindle (8) via a key, the right end of the spindle (8) on the right side is provided with the junction box (6), and a sprocket 1 (33) and a sprocket 2 (34) are connected to the baffle on the left side of the reel (3).

7. A cable reel for a new energy excavator according to claim 6, characterized in that: The torque motor (4) is a three-phase asynchronous motor. A hysteresis coupling is provided at the output shaft end of the torque motor (4). The output gear on the torque motor (4) is transmission-connected to the second sprocket (34) via a chain. The first sprocket (33) is transmission-connected to the third sprocket (25) via a chain.

8. The cable reel for a new energy excavator according to claim 1, characterized in that: The reel (3) comprises a hollow cylinder, with circular baffles provided at both ends of the cylinder, a circular baffle ring connected to the circumference of the baffle via a support rod, a cylinder cover (31) fixed to the cylinder via bolts, and a wire outlet bucket (32) welded to the cylinder.

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