Electric telescopic arm crawler crane

Abstract

The utility model discloses an electric telescopic arm crawler crane. The crane comprises a rotary platform, a rotary support, a telescopic arm device and a walking device, and the telescopic arm device is arranged at the front part on the revolving platform. A hydraulic oil tank, a hydraulic oil pump, a motor, a control system and a battery system are sequentially arranged on one side of the rotary platform. Wherein the hydraulic oil pump is connected with the motor through a shaft, and the motor drives the hydraulic oil pump to rotate to provide power for the lifting winch, the slewing mechanism and the walking device. A cab, a rotating mechanism, a heat dissipation system and a charging system are sequentially arranged on the other side of the rotating platform. And a lifting winch and a counterweight device are arranged on the rear side of the revolving platform. The telescopic arm crawler crane is driven by the motor, so that the problems of large noise, high emission, high energy consumption and the like of the existing telescopic arm crawler crane driven by a diesel engine are effectively solved, the operation effect is ensured, and the working efficiency is improved. And the blank in the aspect of electric control of the telescopic arm crawler crane is filled, and the method is worthy of wide popularization and application.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes and relates to an electric telescopic arm crawler crane. Background Art

[0002] Telescopic crawler cranes are widely used in narrow and low construction sites and engineering projects with frequently relocated work sites because of their features of being able to travel with loads, freely changing arm length, occupying a small area, strong maneuverability, strong lifting capacity, and being very convenient to use and maintain. In recent years, due to the tightening of domestic and foreign emission standards, the gradual tightening of environmental protection law enforcement, and the high domestic and foreign fuel prices, energy conservation and environmental protection of construction machinery are particularly important. In response to the trend of the situation, it is imperative to develop electric motor-driven telescopic crawler cranes. Utility Model Content

[0003] The purpose of the utility model is to provide an electric telescopic boom crawler crane which is environmentally friendly, low in noise, low in energy consumption, reasonably arranged and intelligently controlled, so as to solve the problems of the traditional diesel engine driven telescopic boom crawler crane, such as high noise, high emission and high energy consumption.

[0004] The technical solution adopted by the utility model is: the crane includes a slewing platform, a slewing support, a telescopic arm device and a walking device; its characteristics are:

[0005] The upper slewing platform and the lower walking device are connected and supported by a slewing support in between them, and the upper slewing platform is made to slew around the slewing support;

[0006] The telescopic arm device is arranged at the front part of the slewing platform, and its telescopic and luffing actions are controlled by the telescopic mechanism driven by the internal oil cylinder and the luffing mechanism driven by the lower oil cylinder;

[0007] On one side of the slewing platform, there are arranged a hydraulic oil tank, a hydraulic oil pump, an electric motor, a control system, and a battery system in sequence; wherein: the hydraulic oil pump is connected to the electric motor through the shaft, and the electric motor drives the hydraulic oil pump to rotate, providing power for the hoisting winch, the slewing mechanism, and the traveling device;

[0008] The other side of the slewing platform is arranged with the driver's cab, slewing mechanism, cooling system and charging system in sequence; among them: the output gear of the slewing mechanism is connected with the slewing support to enable the slewing platform to rotate;

[0009] A lifting winch and a counterweight device are arranged on the rear side of the revolving platform, wherein the lifting winch realizes the lifting or lowering function of the crane hook through a wire rope and a telescopic arm device.

[0010] The utility model is driven by an electric motor, which effectively solves the problems of high noise, high emission and high energy consumption of the existing diesel engine-driven telescopic crawler crane, ensures the operation effect and improves the work efficiency. The design is reasonable, fills the gap in the electric control of telescopic crawler crane, and is worthy of wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 for Figure 1 Top view of the .

[0013] In the figure: 1-slewing platform; 2-slewing support; 3-travel device; 4-hydraulic oil tank; 5-hydraulic oil pump; 6-electric motor; 7-control system; 8-battery system; 9-lifting winch; 10-charging system; 11-cooling system; 12-slewing mechanism; 13-telescopic arm device; 14-machine cover; 15-counterweight device; 16-driver's cab. DETAILED DESCRIPTION

[0014] As shown in the figure, the utility model comprises a slewing platform 1, a slewing support 2, a telescopic arm device 13 and a walking device 3.

[0015] The upper rotating platform 1 and the lower walking device 3 are connected and supported by the rotating support 2 in the middle thereof, and the upper rotating platform 1 rotates around the rotating support 2 .

[0016] The telescopic arm device 13 is arranged on the front of the revolving platform 1. The telescopic mechanism driven by the internal oil cylinder and the luffing mechanism driven by the lower oil cylinder control the telescopic and luffing actions to realize the crane boom function.

[0017] On the right side of the slewing platform, from front to back, there are arranged a hydraulic oil tank 4, a hydraulic oil pump 5, an electric motor 6, a control system 7, and a battery system 8; wherein: the hydraulic oil pump 5 is connected to the electric motor 6 through an axis, the kinetic energy is transmitted to the hydraulic oil pump 5, and the hydraulic energy is converted into mechanical energy to drive the lifting winch 9, the slewing mechanism 12, the walking device 3 and other actuators.

[0018] The hydraulic oil tank 4 provides hydraulic oil to the hydraulic oil pump 5 .

[0019] The electric motor 6 is composed of a motor and a driver.

[0020] The control system 7 is located above the motor 6 and includes a controller PCU, a high-voltage wiring harness, and a low-voltage wiring harness.

[0021] The battery system 8 stores electricity and provides power for the motor 6. It is located behind the motor 6 and includes a battery, a battery constant temperature system, and a coolant pipeline. The battery stores a certain amount of electrical energy, and the battery is kept at a suitable operating temperature through the battery constant temperature system, and heat is exchanged with the outside through the coolant pipeline.

[0022] The left side of the slewing platform is arranged from front to back with a driver's cab 16, a slewing mechanism 12, a cooling system 11, and a charging system 10; wherein: the slewing mechanism 12 is driven by a slewing motor and a reducer, and its output gear is connected to the slewing support 2, so that the slewing platform 1 can rotate.

[0023] The heat dissipation system 11 includes a motor, an OBC (on-board charger), an all-in-one radiator, a heat dissipation fan, and a circulating water pump, which dissipate heat for the entire hydraulic system, battery system, and motor.

[0024] The charging system 10 includes an on-board charging unit, an all-in-one PDU (cabinet socket), an AC box (control box) and a wiring harness.

[0025] The rear side of the slewing platform is equipped with a hoisting winch and a counterweight device, wherein: the hoisting winch 9 is two sets, which realizes the lifting or lowering function of the crane hook through the steel wire rope and the telescopic arm device 13, and realizes the crane weight adjustment function from the side. The counterweight device 15 is arranged on both sides of the rear side of the slewing platform 1, which ensures the rear stability of the crane load and can be raised and lowered by the hydraulic cylinder.

[0026] The parts on both sides of the rotary platform 1 are provided with machine covers 14 for protection.

[0027] In summary, unlike the traditional telescopic boom crawler crane driven by a diesel engine, the utility model realizes the electrification of the telescopic boom crawler crane by introducing a new motor 6, a control system 7, a battery system 8, a charging system 10 and a cooling system 11, and has the advantages of environmental protection, low noise, low energy consumption, reasonable layout, and intelligent control.

Claims

1. An electric telescopic boom crawler crane, comprising a slewing platform (1), a slewing support (2), a telescopic boom device (13) and a walking device (3); wherein: The upper rotating platform (1) and the lower walking device (3) are connected and supported by a rotating support (2) in between, and the upper rotating platform (1) rotates around the rotating support (2); The telescopic arm device (13) is arranged on the front part of the rotating platform (1), and its telescopic and luffing actions are controlled by a telescopic mechanism driven by an internal oil cylinder and a luffing mechanism driven by a lower oil cylinder; A hydraulic oil tank (4), a hydraulic oil pump (5), an electric motor (6), a control system (7), and a battery system (8) are sequentially arranged on one side of the slewing platform (1); wherein the hydraulic oil pump (5) is connected to the electric motor (6) through an axis, and the electric motor (6) drives the hydraulic oil pump (5) to rotate, thereby providing power for the hoisting winch (9), the slewing mechanism (12), and the walking device (3); A driver's cab (16), a slewing mechanism (12), a cooling system (11), and a charging system (10) are arranged in sequence on the other side of the slewing platform (1); wherein: the output gear of the slewing mechanism (12) is connected to the slewing support (2) so that the slewing platform (1) can be slewed; A lifting winch (9) and a counterweight device (15) are arranged on the rear side of the slewing platform (1), wherein the lifting winch (9) realizes the lifting or lowering function of the crane hook through a steel wire rope and a telescopic arm device (13).

2. The electric telescopic boom crawler crane according to claim 1, characterized in that: The control system (7) is located above the electric motor (6), and includes a controller PCU, a high-voltage wiring harness, and a low-voltage wiring harness.

3. An electric telescopic boom crawler crane according to claim 1 or 2, characterized in that: The battery system (8) stores electricity and provides power for the electric motor (6). It is located behind the electric motor (6) and includes a battery, a battery constant temperature system, and a coolant pipeline.

4. An electric telescopic boom crawler crane according to claim 1 or 2, characterized in that: The heat dissipation system (11) comprises a motor, an OBC, an all-in-one radiator, a heat dissipation fan, and a circulating water pump.

5. The electric telescopic boom crawler crane according to claim 1 or 2, characterized in that: The charging system (10) comprises an on-board charging unit, an all-in-one PDU, an AC box and a wiring harness.

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