A wired electrically powered forklift truck

Abstract

This utility model relates to the field of electric work vehicle technology and is a wired-powered electric loader, comprising a support tower, a cable bracket, a cable reel, a rope reel, and an electric vehicle body; a first conductive slip ring is mounted on the electric vehicle body, and the stator of the first conductive slip ring is electrically connected to the drive motor of the electric vehicle body; the bottom end of the cable bracket is rotatably mounted on the top of the support tower via a slewing bearing; the cable reel and the rope reel are fixed to the same shaft and rotatably mounted on the upper part of the cable bracket, and the cable reel and the rope reel rotate in opposite directions; a counterweight assembly is suspended at the outer end of the rope reel; the inner end of the cable reel is electrically connected to an external power source; and the outer end of the cable reel is electrically connected to the rotor of the first conductive slip ring; this wired-powered electric loader can perform high-intensity, low-cost, continuous, and flexible operations within a fixed area.

Description

Technical Field

[0001] This utility model relates to the field of electric work vehicle technology, and in particular to a wired-powered electric loader. Background Technology

[0002] As is well known, most traditional work vehicles are driven by diesel engines, which not only use fossil fuels and have complex machine configurations, but are also noisy and difficult to control. Therefore, more and more work vehicles are using electric energy to directly replace diesel chemical energy and electric motors to replace engines. The electric motor converts electrical energy into mechanical energy to drive the whole machine. At the same time, the electronic control system coordinates the work of each component, which not only retains the working function of the loader, but also achieves the characteristics of zero emissions, low noise and easy operation. However, trams are also divided into track-based and trackless types. Trackless battery-powered trams are more flexible in their movement, but the cost of batteries is high and they cannot operate continuously. Track-based trams, on the other hand, can operate continuously, but they are not flexible enough in their movement. Therefore, how to balance mobility and low-cost continuous operation within a limited operating area has become an issue that needs to be addressed. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art and solve the existing technical problems, this utility model discloses a wired electric loader that can perform high-intensity, low-cost, continuous and flexible operations within a fixed area.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A wired-powered electric loader includes a support tower, a cable bracket, a cable reel, a rope reel, and an electric vehicle body. A first conductive slip ring is mounted on the electric vehicle body, and the stator of the first conductive slip ring is electrically connected to the drive motor of the electric vehicle body. The bottom end of the cable bracket is rotatably mounted on the top of the support tower via a slewing bearing. The cable reel and the rope reel are fixed to the same shaft and rotatably mounted on the upper part of the cable bracket, with the cable reel and rope reel rotating in opposite directions. A counterweight assembly is suspended from the outer end of the rope reel. The inner end of the cable reel is electrically connected to an external power source, and the outer end of the cable reel is electrically connected to the rotor of the first conductive slip ring.

[0005] Furthermore, the support tower is configured as a frame structure with an internal vertical channel, and is formed by segmenting and fixing multiple block units.

[0006] Furthermore, the counterweight assembly includes a counterweight box, the top surface of which is fixed with a lifting lug for connecting the outer end of the coiled rope, and two vertical slide rails are fixed on both sides of the vertical channel of the support tower. Each side of the counterweight box is equipped with a directional pulley that rolls and contacts the corresponding vertical slide rail.

[0007] Furthermore, the cable support includes a base plate frame and side plate frames erected and fixed at both ends of the upper surface of the base plate frame. The top ends of the two side plate frames are rotatably connected to the corresponding ends of the disc shaft through fixedly installed bearing seats. The upper end face of the inner ring and the lower end face of the outer ring of the slewing support are fixedly connected to the top surface of the base plate frame and the support tower, respectively.

[0008] Furthermore, guide frames are fixed to the upper end of the same side of both side plate frames, and vertical guide rollers are rotatably installed on the two outer side rods corresponding to the two guide frames. Upper guide rollers and lower guide rollers are rotatably installed between the upper and lower ends of the two outer side rods, respectively.

[0009] Furthermore, a guide rope pulley is installed on the base plate frame at a position corresponding to the inner ring of the slewing support.

[0010] Furthermore, the drive motor of the electric vehicle body is a water-cooled motor and is equipped with a cooling fan.

[0011] Furthermore, the inner end of the cable reel is electrically connected to the external power source via a second conductive slip ring.

[0012] By adopting the technical solution described above, this utility model has the following beneficial effects: This utility model discloses a wired-powered electric loader. By setting up a support tower and an external online power supply in the work area, the cable can be raised, facilitating flexible movement and continuous operation of the electric loader while connected to the cable for continuous power supply. More importantly, the movement of the electric loader and the counterweight assembly can be used to control the winding and unwinding of the cable reel and rope reel, achieving automatic cable extension and retraction, avoiding interference with the movement of the loader. Overall, this provides a foundation for replacing diesel vehicles with electric loader, reducing emissions and noise, and improving maneuverability, making the overall performance close to or even better than traditional work vehicles. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of an embodiment of the present utility model; Figure 2 yes Figure 1 Side view of the connection structure of the central support tower; Figure 3 yes Figure 1 Enlarged structural diagram of the cable support bracket; Figure 4 This is a top view schematic diagram of the installation structure of the cable reel and rope reel.

[0014] In the diagram: 1. Electric vehicle body; 101. Drive motor; 102. Cooling fan; 2. First conductive slip ring; 3. Support tower; 4. Cable reel; 401. Cable reel; 5. Counterweight assembly; 501. Counterweight box; 502. Directional pulley; 503. Lifting lug; 6. Slewing bearing; 7. Cable bracket; 8. Rope reel; 801. Rope reel; 9. Reel shaft; 10. Guide frame; 11. Vertical guide roller; 12. Upper guide roller; 13. Lower guide roller; 14. Rope guide pulley. Detailed Implementation

[0015] The technical solution of this utility model will be described below with reference to the accompanying drawings of the embodiments of this utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this utility model for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0016] Combined with appendix Figure 1-4 The wired-powered electric loader includes a support tower 3, a cable bracket 7, a cable reel 4, a rope reel 8, and an electric vehicle body 1. Compared to the traditional diesel engine, the electric vehicle body 1 removes the engine and uses industrial electricity as the power source to power various systems. The speed and torque of the drive motor 101 can be precisely adjusted by the controller, eliminating the need for a traditional clutch, resulting in smoother driving and operation. At the same time, the original hydraulic pump, driven by the engine, is now driven by an independent hydraulic motor. The motor controls the flow and pressure of the hydraulic pump to achieve operations such as bucket lifting, tilting, etc. The power source of the hydraulic system has been changed from the engine to electric, and the response speed and control accuracy can be improved through motor parameter optimization, making it easier to coordinate power output. As needed, the drive motor 101 of the electric vehicle body 1 is set as a water-cooled motor and equipped with a cooling fan 102 to improve heat dissipation during continuous operation, ensuring that the new performance is close to or better than the original diesel engine model. A first conductive slip ring 2 is mounted on the electric vehicle body 1. The stator of the first conductive slip ring 2 is electrically connected to the drive motor 101 of the electric vehicle body 1. The first conductive slip ring 2 can transmit power and electrical signals between the fixed structure and the rotating structure, preventing the connected cables from getting twisted together when the electric vehicle body 1 moves flexibly, which could lead to tangling, breakage, or even equipment damage. (See attached...) Figure 2As shown, the bottom end of the cable bracket 7 is rotatably mounted on the top of the support tower 3 via the slewing bearing 6, which allows the cable bracket 7 to rotate flexibly relative to the support tower 3, also to avoid cable entanglement with the electric vehicle body 1; as needed, the cable bracket 7 includes a base plate frame and side plate frames erected and fixed at both ends of the upper surface of the base plate frame. The cable reel 4 and rope reel 8 are placed between the two side plate frames. The top ends of the two side plate frames are rotatably connected to the corresponding ends of the reel shaft 9 via fixedly mounted bearing seats; the upper end face of the inner ring and the lower end face of the outer ring of the slewing bearing are fixedly connected to the top surface of the base plate frame and the support tower 3 respectively to ensure a stable connection; Cable reel 4 and rope reel 8 are fixed to the same shaft 9 and rotatably mounted on the upper part of cable bracket 7. The cable reel 4 and rope reel 8 rotate in opposite directions when unwinding and winding; that is, when cable reel 4 is rotated by external force to unwind the cable, it can drive rope reel 8 to rotate and wind up the cable via shaft 9. (See attached...) Figure 3 As shown, a counterweight assembly 5 is suspended at the outer end of the rope 801 of the rope reel 8. When the weight of the counterweight assembly 5 is greater than the external force of the cable reel 4 in releasing the cable, the rope reel 8 rotates to release the cable, and the cable reel 4 rotates to retract the cable, preventing excessive and loose accumulation and tangling of the released cable. As needed, the support tower 3 is designed as a frame structure with an internal vertical channel, formed by segmented and heightened fixed sections, facilitating adjustment of the appropriate height as required. Furthermore, the counterweight assembly 5 includes a counterweight box 501, the top surface of which is fixed with a lifting lug 503 connecting to the outer end of the rope 801, supporting... Two vertical slide rails are fixed on both sides of the vertical channel of the tower 3. The counterweight box 501 is equipped with directional pulleys 502 on both sides, which are in rolling contact with the corresponding vertical slide rails to ensure that the counterweight box 501 moves up and down flexibly and stably and prevents swaying. The bottom plate frame is equipped with a guide rope pulley 14 at the position inside the inner ring of the slewing support. After the outer end of the rope 801 comes out from the rope reel 8, it can first pass around the guide rope pulley 14 and then be hoisted and connected to the counterweight box 501. The guide rope pulley 14 can ensure that the rope of the hoisting section is close to vertical and prevent skewed hoisting. The rope 801 of the rope reel 8 is generally made of steel wire rope to ensure structural strength. The inner end of the cable reel 401 is electrically connected to an external power source. The power supply line of the external power source is arranged along the support tower 3 and connected to the exposed inner end of the cable reel 401 to ensure a continuous power supply. When the cable support 7 rotates, the power supply line of the external power source may also rotate and twist. To prevent the risk of breakage, a second conductive slip ring is used to electrically connect the inner end of the cable reel 401 to the external power supply line. That is, the stator connection of the second conductive slip ring of the external power supply line and the rotor connection of the inner end of the cable reel 401 to the second conductive slip ring eliminate the influence of rotation. The outer end of the cable reel 401 is electrically connected to the rotor of the first conductive slip ring 2, realizing a complete continuous power supply line. (See attached diagram) Figure 2 and 4As shown, as needed, guide frames 10 are fixed to the upper end of the same side of both side plate frames. Vertical guide rollers 11 are rotatably installed on the two outer side rods corresponding to the two guide frames 10. Upper guide rollers 12 and lower guide rollers 13 are rotatably installed between the upper and lower ends of the two outer side rods, respectively. The outer end of the cable 401 of the cable reel 4 passes through the space between the two vertical guide rollers 11 and between the upper guide rollers 12 and the lower guide rollers 13, which avoids large swing of the cable 401 and also prevents hard wear, thus improving service life.

[0017] When the electric forklift described in this utility model is working, and the electric vehicle body 1 is moving away from the support tower 3, the cable reel 4 begins to unload the cable under the drive of the electric vehicle body 1, while the rope reel 8 begins to wind up the cable, and the counterweight box 501 is lifted. When the electric vehicle body 1 approaches the support tower, the cable tension is released, and the wire rope begins to descend under the gravity of the counterweight box 501. During the descent, the rope reel 8 begins to unload the cable, while simultaneously driving the cable reel 4 to wind up the cable. During the operation of the electric vehicle body 1, the angle formed between it and the support tower 3 is eliminated by the slewing support, and the angle formed between the cable and the electric vehicle body 1 is eliminated by the first conductive slip ring 2.

[0018] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A corded electric power-driven forklift truck characterized by: It includes a support tower, cable bracket, cable reel, rope reel and electric vehicle body; the electric vehicle body is equipped with a first conductive slip ring, and the stator of the first conductive slip ring is electrically connected to the drive motor of the electric vehicle body. The bottom end of the cable bracket is rotatably mounted on the top of the support tower via a slewing bearing. The cable reel and rope reel are fixed to the same shaft and rotatably mounted on the upper part of the cable bracket. The cable reel and rope reel rotate in opposite directions when winding and unwinding. A counterweight assembly is suspended at the outer end of the rope reel. The inner end of the cable reel is electrically connected to an external power source. The outer end of the cable reel is electrically connected to the rotor of the first conductive slip ring.

2. The electric wire-powered forklift truck of claim 1 wherein: The support tower is a frame structure with an internal vertical channel, and is formed by segmenting and fixing multiple block units.

3. The wired-powered electric loader according to claim 2, characterized in that: The counterweight assembly includes a counterweight box, the top surface of which is fixed with a lifting lug for connecting the outer end of the coiled rope. Two vertical slide rails are fixed on both sides of the vertical channel of the support tower. Directional pulleys that roll in contact with the corresponding vertical slide rails are installed on both sides of the counterweight box.

4. The wired-powered electric loader according to claim 1, characterized in that: The cable support includes a base plate frame and side plate frames erected and fixed at both ends of the upper surface of the base plate frame. The top ends of the two side plate frames are rotatably connected to the corresponding ends of the disc shaft through fixedly installed bearing seats. The upper end face of the inner ring and the lower end face of the outer ring of the slewing support are fixedly connected to the top surface of the base plate frame and the support tower, respectively.

5. The electric wire-powered pallet truck according to claim 4, characterized in that Guide frames are fixed to the upper end of the same side of both side plate frames. Vertical guide rollers are rotatably installed on the two outer side rods corresponding to the two guide frames. Upper guide rollers and lower guide rollers are rotatably installed between the upper and lower ends of the two outer side rods, respectively.

6. The wired-powered electric loader according to claim 4, characterized in that: The base plate frame is equipped with a guide rope pulley at a position corresponding to the inner ring of the slewing support.

7. The wired-powered electric loader according to claim 1, characterized in that: The drive motor of the electric vehicle body is a water-cooled motor and is equipped with a cooling fan.

8. The wired-powered electric loader according to claim 1, characterized in that: The inner end of the cable reel is electrically connected to the external power source via a second conductive slip ring.

Images