Excavator trailing cable power supply device

Abstract

The utility model discloses a kind of excavator tow line power supply devices, it belongs to excavator power supply field, it solves the problem of cable and ground contact wear and tear and safety accident after excavator exceeds cable length limit to have cable pulling, for the safe and continuous power supply of excavator. It mainly includes excavator body and support, the excavator body is equipped with current collector;Spring reel is equipped on the support, and the spring reel is rotatably connected by rotating support and fixed support;Cable is wound on the spring reel, one end of cable is connected to the top of current collector, and the other end is connected with distribution cabinet;Distribution cabinet is fixed on the side of support. Spring reel is set on the support, provide safe tow line mode to meet the requirement of tow line type excavator power supply to different tonnage, and strong applicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to excavator power supply field, concretely, especially relates to a kind of excavator tow line power supply device. BACKGROUND

[0002] The state encourages the development of new energy, so engineering machinery is also transforming to new energy electrification, mainly including tow line type and pure electric type.

[0003] Pure electric excavator, due to the demand of different working conditions and the limited space of whole machine, the number of battery pack is less, the power of whole machine is low, especially in heavy load working condition, the endurance time of whole machine is less, frequent charging is needed, the time cost of user increases, leading to user's dissatisfaction with the endurance of pure electric excavator.

[0004] Tow electric excavator, through external power supply mode, saves charging time, can continuously work without interruption, and is economical, and is very suitable for application in port, factory area and other excavating mobile range small occasions, but tow electric excavator wiring harness wiring mode limits the working range of excavator, which is very inconvenient for users. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of excavator tow line power supply device to solve the problem of cable contact wear and tear and safety accident caused by pulling cable when excavator exceeds the limit of cable length, to provide safe and continuous power supply for excavator.

[0006] The utility model is realized by the following technical solutions:

[0007] A kind of excavator tow line power supply device, including excavator body and support, the excavator body is equipped with current collector;Spring reel is equipped on the support, and the spring reel is rotatably connected with fixed support by rotating support;Cable is wound on the spring reel, one end of the cable is connected to the top of current collector, and the other end is connected with power distribution cabinet;Power distribution cabinet is fixed on one side of support.Spring reel is arranged on the support, which provides safe tow line mode to meet the power supply requirements of tow line type excavator of different tonnage, and has strong applicability.

[0008] Further, the spring reel includes a rotating shaft, and a limit switch is arranged on the rotating shaft, and the limit switch rotates with the rotating shaft.

[0009] Further, the limit switch includes limit switch I and limit switch II, the limit switch I is electrically connected with wireless sending device, the wireless sending device is arranged on the spring reel, and the limit switch II is electrically connected with contactor, so that the protection functions of early warning and forced power-off can be realized when the cable exceeds the set safe length, and the safe and stable operation of excavator is ensured.

[0010] Further, the excavator body is provided with an excavator display and a receiving device, and the receiving device is in communication connection with the wireless transmitting device.

[0011] Further, the bracket comprises a support frame and a lower frame, and the lower frame is connected with the support frame.

[0012] Further, the top end of the bracket is higher than the top of the current collector.

[0013] Compared with the prior art, the excavator has the advantages that:

[0014] The spring reel of the excavator has a detection function, and when the cable exceeds the set safe length, the spring reel can realize the protection functions of early warning and forced power-off, thereby ensuring the safe and stable operation of the excavator. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model;

[0016] Figure 2 is a warning principle diagram of the utility model;

[0017] Figure 3 is a spring reel structural schematic view of the utility model;

[0018] Figure 4 is a bracket schematic view of the utility model.

[0019] In the figure: 1, power distribution cabinet; 2, bracket; 3, cable I; 4, spring reel; 5, cable II; 6, current collector; 7, excavator body; 8, limit switch; 9, wireless transmitting device; 10, rotary support; 11, fixed support; 12, support frame; 13, lower frame. DETAILED DESCRIPTION

[0020] In order to make the personnel in the art better understand the technical scheme of the utility model, the technical scheme of the utility model will be described clearly and completely below in combination with the drawings of the utility model, and based on the embodiments in the application, other similar embodiments obtained by the personnel in the art without creative labor should belong to the protection scope of the application. In addition, the direction words mentioned in the following embodiments, such as "up", "down", "left", "right", etc. are only the directions of the drawings, therefore, the direction words used are used to explain but not to limit the creation of the utility model.

[0021] The utility model will be further described below in combination with the drawings.

[0022] Example 1: A cable-operated power supply device for excavators, such as... Figures 1-4 As shown, the device includes an excavator body 7 and a support 2. The excavator body 7 is equipped with a current collector 6. The support 2 is equipped with a spring drum 4, which is rotatably connected to a fixed support 11 via a rotating support 10. A cable is wound around the spring drum 4, consisting of two parts: cable I3 and cable II5. Cable I3 is connected to the top of the current collector 6, and cable II5 is connected to a distribution cabinet 1, which is fixed to one side of the support 2. The spring drum 4 on the support 2 provides a safe cable-operated power supply method that can meet the power supply requirements of cable-operated excavators of different tonnages, making it highly adaptable.

[0023] Example 2: A cable-operated power supply device for an excavator. A spring drum 4 includes a rotating shaft with a limit switch 8 mounted on it. The limit switch 8 rotates with the rotating shaft. The limit switch 8 includes limit switch I and limit switch II. Limit switch I is electrically connected to a wireless transmitter 9, which is mounted on the spring drum 4. Limit switch II is electrically connected to a contactor. When the cable exceeds a set safe length, it provides early warning and forced power-off protection, ensuring the safe and stable operation of the excavator. The excavator body 7 is equipped with an excavator display and a receiver, which is communicatively connected to the wireless transmitter. The bracket 2 includes a support frame 12 and a lower frame 13, with the lower frame 13 connected to the support frame 12. The top of the bracket 2 is higher than the top of the current collector 6.

[0024] The support frame 2 consists of a support frame 12 and lower frames 13, with one support frame 12 and three lower frames 13. For example, the support frame 12 has a height of 0.8 meters, and the lower frames 13 have a height of 3 meters. The support frame 2 can achieve four different height options, adapting to operations in different confined spaces. Furthermore, the modular design of the support frame 2 facilitates installation and transportation. Other aspects are the same as in Embodiment 1.

[0025] When the excavator needs to work, first connect the high-voltage power supply, through the cable to connect the power supply of the distribution cabinet 1 to the spring reel 4, the spring reel 4 is connected to the current collector 6 on the excavator through the cable, and the electrical connection is completed. Among them, the spring reel 4 is provided with two sets of limit switches 8, limit switch I and limit switch II, and a wireless sending device 9, limit switch I is connected with wireless sending device 9, limit switch II is connected with the control end of the contactor in the distribution cabinet 1, the maximum working radius of the excavator is 45 meters, when the walking distance of the excavator reaches the set value C (C < B), limit switch I and wireless sending device 9 will act, after the receiver in the cab of the excavator receives the information of wireless sending device 9, the operator will be prompted on the display of the excavator, so as to avoid exceeding the maximum working radius of the excavator, if the operator does not pay attention to the prompt information, when the excavator reaches the limit position, limit switch II on the spring reel 4 acts, controls the contactor in the distribution cabinet 1 to disconnect, so that the distribution cabinet 1 is forced to power off.

[0026] Among them, the spring reel 4 on the support 2 and the tower current collector 6 on the excavator support the cable to be separated from the ground contact. The spring reel 4 is connected with the fixed support 11 through the connecting rotary support 10 to realize 360° rotation, so as to avoid the risk of cable stress and wear when the excavator moves left and right; the limit switch 8 is fixed on the rotating shaft of the spring reel 4, when the spring reel 4 unwinds or winds, the limit switch 8 also rotates synchronously, when the spring reel 4 rotates one revolution, the limit switch 8 rotates 1 / n revolution (the limit switch 8 rotates one revolution at most), when the limit switch I rotates to the set amount, the limit switch 8 will be closed, and an on-off value is output to the wireless transmitting device through the wire harness, after the receiver in the cab of the excavator body 7 receives the signal, the signal is transmitted to the display through the processing of the control unit of the excavator.

[0027] When the limit switch II rotates to the set amount, the limit switch 8 will be closed, and an on-off value is output to the contactor through the wire harness, the coil of the contactor is disconnected, the main contact of the contactor is disconnected, and the whole vehicle is powered off. The main contact of the contactor is used to control the on-off of the power supply of the distribution cabinet 1 and the excavator body 7.

[0028] The utility model has been described in detail above, the above is only the preferred embodiment of the utility model, which cannot limit the scope of the utility model, that is, any equivalent change and modification made within the scope of the application shall still fall within the scope of the utility model.

Claims

1. A dragline power supply device for an excavator, comprising an excavator body (7) and a support (2), characterised in that: The excavator body (7) is provided with a current collector (6); the support (2) is provided with a spring reel (4), the spring reel (4) is rotationally connected with a rotating support (10) and a fixed support (11); a cable is wound on the spring reel (4), one end of the cable is connected to the top of the current collector (6), and the other end is connected with a power distribution cabinet (1); the power distribution cabinet (1) is fixed on one side of the support (2).

2. The excavator drag wire power supply of claim 1, wherein: The spring reel (4) comprises a rotating shaft, and the rotating shaft is provided with a limit switch (8) which rotates with the rotating shaft.

3. The excavator drag wire power supply of claim 2, wherein: The limit switch (8) comprises a limit switch I and a limit switch II, the limit switch I is electrically connected with a wireless sending device (9) arranged on the spring reel (4), and the limit switch II is electrically connected with a contactor.

4. The excavator drag wire power supply of claim 1, wherein: The excavator body (7) is provided with an excavator display and a receiving device, and the receiving device is in communication connection with the wireless sending device.

5. The excavator drag wire power supply of claim 1, wherein: The support (2) comprises a supporting frame (12) and a lower frame (13), and the lower frame (13) is connected with the supporting frame (12).

6. The excavator trailing wire power supply of claim 5, wherein: The top end of the support (2) is higher than the top of the current collector (6).

Images