CN100486885C - Power supply for tire type gantry crane - Google Patents

Abstract

A power supplying mechanism for tyre-type gantry crane is composed of fixed posts, power transmission lines arranged on said fixed posts, and sliding current collector able to slide on said power transmission lines, fixed to a carriage able to move parallelly to said power transmission lines and with leading out power cord connected electrically with the electric system of gantry crane. Said carriage is flexible connected to the gantry crane.

Description

Power supply device for rubber-tyred gantry crane

technical field

The invention belongs to a power supply device, in particular to a device used in a large cargo yard such as a port wharf to supply power to a rubber-tyred gantry crane.

Background technique

At present, there are basically two types of hoisting machinery in the large cargo yards of major terminals at home and abroad, especially gantry cranes dedicated to lifting containers: one is a tire-type gantry crane, and the other is a rail-type gantry crane. crane.

The power of rail-mounted gantry cranes in the cargo yard on the wharf is powered by the power grid. The connection of the electrical system is that the collector directly fixed on the frame of the crane fuselage is in contact with the trolley line, and the power grid passes through the cable reel. It is connected with the trolley line, and the collector is connected with the electrical system of the crane. Because the high-current trolley line power supply method has relatively high requirements for the contact between the collector and the trolley line, when the collector is sliding, the lateral movement distance between the fixed bracket of the collector and the trolley line cannot exceed ±15mm, vertical The direction runout cannot exceed ±20mm; the rigid wheel of the rail crane travels on a fixed track, and the contact between the current collector fixed on the crane bracket and the trolley line can fully meet the above requirements. The power grid is used to supply the gantry crane, which has the advantages of low energy consumption, low noise, zero emission and no pollution, and low maintenance and operation costs. However, because the whole machine walks along a fixed track, and is limited by the length of the power supply cable and the track, it cannot be used for vertical transition operations. This power supply method can only be applied to automatic production lines with fixed running tracks in the workshop and some track-type mechanical equipment at present.

The whole walking of the rubber-tyred gantry crane adopts 8 pneumatic tires that can turn 90 degrees, and the lateral deviation during walking can be allowed within the range of ±500mm, so it can transfer to any position of the entire cargo yard. Especially the lifting of containers is very flexible. However, because the walking wheels of the rubber-tyred gantry crane are pneumatic tires, when loading and unloading large cargo such as containers, the whole machine will sway in the lateral direction and jump in the vertical direction seriously. Contact power supply cannot guarantee a good contact between the collector and the trolley line; at the same time, the power grid is powered by the cable reel, because the cable needs to be very long, and it is impossible to flexibly transfer to any position in the entire container yard. the goal of. To maintain its flexible operation in transition, it can only be powered by the diesel generator set carried with it. Using a diesel generator set to supply power has high energy consumption, high noise, large exhaust emissions, high maintenance costs and high operating costs.

How to make rubber-tyred gantry cranes not only achieve low-cost, low-noise, and pollution-free operation, but also realize flexible and flexible transition work is a problem that needs to be solved in the mechanical operation of large-scale cargo yards.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the limitations of the length of the power supply cable and the track of the existing rail-mounted gantry cranes, which prevent vertical transfer operations, and the fact that the tire-type gantry cranes are powered by diesel generators with high energy consumption, high noise, and high operating costs. To overcome the disadvantages, a power supply device for a rubber-tyred gantry crane is provided.

In order to solve the above-mentioned problems in the prior art, the present invention is realized by adopting the following technical solutions: including the trolley line erected on the fixed support and connected to the grid power supply line, and slidingly contacting each trolley line of the trolley line , The lead wire is connected with the electrical system of the rubber-tyred gantry crane, the collector is installed on the trolley with cushion rubber pads at the front and rear ends, the trolley can move in parallel with the trolley line, and the left and right sides of the upper part of the guide rail are fixed on the trolley frame , the anti-turnover hook whose hook head is opposite to the groove of the track, the trolley frame that moves parallel to the trolley line is equipped with wheels, and on both sides of the trolley line under the fixed bracket, there are respectively fixed wheels parallel to the trolley line. 1. The guide rail on which the wheels can roll; 8 wheels are distributed in pairs in the vertical direction on the horizontal guide rail, and 8 wheels are distributed in pairs in the horizontal direction on the vertical guide rail.

The present invention also has the following technical characteristics:

The guide rails straddle both sides of the sliding contact line, and the horizontal guide rails and the vertical guide rails are symmetrically distributed horizontally;

The guide rail is I-shaped, installed in the middle of the four sliding contact lines under the bracket, and the two sides of the "I" character of the I-shaped guide rail are respectively used as horizontal guide rails and vertical guide rails;

The flexible connection mode between the trolley and the rubber-tyred gantry crane is that one end of the flexible traction rope is connected to the vehicle frame of the trolley, and the other end is connected to the frame of the rubber-tyred gantry crane. and a soft rope parallel to it and longer than the leash;

The connection mode between the traction rope and the rubber-tyred gantry crane frame is that, at the traction rope end, a pull rod end that can be hooked on the crane, and a detachable hook that can be hung are installed.

The advantages and positive effects of the present invention are that since the trolley line power supply line across the work area is erected in the container and other cargo yards, when the rubber-tyred gantry crane is operating in the box area, the required power will be reduced by a specially designed mechanical device. The power of the grid is supplied to the trolley line, and then through the collector installed on the trolley parallel to the trolley line, it supplies power to the electrical system of the crane. The rubber-tyred gantry crane that can flexibly move its position in the yard operation area drives the trolley to move on the guide rail parallel to the trolley line, which can realize the work coverage of the entire yard; when the rubber-tyred gantry crane needs to transfer to another When working in the area, cut off the connection between the power supply grid and the electrical system of the rubber-tyred gantry crane, and then transfer to the field, and then connect its working power line to the power supply line of the trolley line in another operation area. In this way, the rubber-tyred gantry crane can not only retain the advantages of flexibility and convenience for transition operations, but also achieve low energy consumption, low cost, low noise and pollution-free power supply like a rail-mounted gantry crane.

According to calculations, if diesel generators are used to power rubber-tyred gantry cranes, the average energy consumption of the diesel used to lift containers is about 1.6 liters per box. Calculated at 4.7 yuan per liter, the energy consumption of a single box is about 7.52 yuan. The average maintenance cost is about 65,000 yuan/unit; the single-box energy consumption of a rubber-tyred gantry crane powered by grid power is about 2.5kWh/box, calculated at 0.91 yuan per kWh, the single-box energy consumption is about 2.27 yuan , the average annual maintenance cost is only 3,000 yuan per unit.

Calculated according to the above consumption, the operating cost of the rubber-tyred gantry crane powered by grid power is much lower than that of the rubber-tyred gantry crane powered by diesel generator set. It can be seen that the economic and social benefits of the rubber-tyred gantry crane powered by grid power are very significant compared with the rubber-tyred gantry crane powered by diesel generator set.

Description of drawings

Fig. 1 is the installation schematic diagram of the present invention;

Fig. 2 is a left schematic diagram of Fig. 1;

Fig. 3 is an enlarged view of the power supply device in Fig. 1;

Fig. 4 is the rear view along the traveling direction of the dolly in Fig. 1;

Fig. 5 is the A-A direction view of Fig. 4;

Fig. 6 is the installation diagram of another embodiment of the present invention;

Fig. 7 is a schematic structural diagram of the flexible traction rope in Fig. 2 .

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

In Fig. 1, in a large cargo yard such as a container in a port terminal, a plurality of fixed brackets 1 arranged continuously are fixed. The current collector 2.2 in sliding contact with each trolley line 2.1 is fixedly installed on the upper part of the frame 3.1 of the trolley 3 which is located on the side of the trolley line 2 and can move in parallel with the trolley line 2.1; the lead wire 11 of the current collector 2.2 and the tire One end of the flexible traction rope 4 is connected to the vehicle frame 3.1 of the trolley 3, and the other end is connected to the end of the transverse tie rod 5 fixed on the rubber-tyred gantry crane 7 (see Fig. 2, Fig. 3. Figure 6).

The trolley 3 moving parallel to the trolley line 2.1 can be on both sides of the trolley line 2.1 under the fixed bracket 1, and two guide rails 6 parallel to the trolley line 2.1 are respectively fixed (see Figure 4). The wheels on the side walk and move on two guide rails 6.

The two guide rails 6 on both sides of the trolley line 2.1 are horizontal guide rails 6.1 distributed symmetrically across both sides of the trolley line 2.1, and the traveling wheels 3.2 of the trolley 3 move on the horizontal guide rails 6.1.

In order to better ensure good contact between the current collector 2.2 fixed on the frame and the trolley line 2.1 when the trolley 3 moves on the guide rail 6, the guide rails 6 on both sides of the trolley line 2.1 straddle both sides of the trolley line 2.1 , and the horizontal guide rail 6.1 and the vertical guide rail 6.2 are symmetrically distributed respectively, and the traveling wheel 3.2 and the horizontal guide wheel 3.3 of the trolley 3 move on the horizontal guide rail 6.1 and lean on the vertical guide rail 6.2 respectively (see Fig. 3, Fig. 4);

The guide rail 6 is to install the channel steel and the sliding contact line 2.1 on the bracket 1 in parallel, the bottom surface of the channel steel is erected, the opening of the channel steel is to the two outer sides of the trolley, and the bottom surface of the channel steel is used as the vertical guide rail 6.2, and the horizontal The upper side is used as horizontal guide rail 6.1.

In Fig. 6, in order to reduce the engineering cost, the trolley 3 that moves parallel to the trolley lines 2.1 is in the middle of the four trolley lines 2.1 below the support 1, and is fixed with a horizontal I-shaped guide rail parallel to the trolley lines 2.1 10. The horizontal and vertical surfaces of the two sides of the "I" character are respectively used as the horizontal guide rail 6.1 and the vertical guide rail 6.2, and the traveling wheels of the trolley 3 walk along the middle I-shaped guide rail 10 respectively.

In order to make the in-use wheels of the trolley wear and tear to a certain extent, when there are problems such as non-rotation or falling off, the spare wheels are automatically put into use to ensure the reliable operation of the trolley without jamming, the frame 3.1 of the trolley 3 is installed The walking wheel 3.2 on the horizontal guide rail 6.1, and the horizontal guide wheel 3.3 leaning on the vertical guide rail 6.2 are respectively 8 (referring to Fig. 5) that are installed in pairs.

In order to prevent that when there are two cranes working on the sliding contact line 2, the frame 3.1 collides and damages the trolley 3 and the current collector 2.2, buffer pads 8 are fixed on the front and rear ends of the trolley 3 frame 3.1 ( See Figure 4, Figure 5).

In order to prevent the trolley 3 from turning over on both sides of the guide rail 6 or even falling down from the guide rail 6, on the frame 3.1 of the trolley 3, on the left and right sides of the upper part of the guide rail 6, there are fixed anti-corrosion hooks whose hook head is opposite to the groove of the guide rail 6. Overturning hook 9 (referring to Fig. 4), the embodiment of Fig. 6 is the same as Fig. 4, also is fixed with anti-overturning hook 9 on horizontal I-shaped guide rail 10 groove both sides.

In Fig. 7, in order to make the rubber-tyred gantry crane 7 (see Fig. 1 and Fig. 2) vibrate less and be more flexible when pulling the trolley 3, and ensure good contact of the line, the traction rope 4 is composed of an elastic traction belt 4.1 It is composed of the soft rope 4.2 parallel to it and longer than the traction belt 4.1. In the case of a small general pulling force, the trolley 3 can be pulled to move on the guide rail only by the action of the traction belt 4.1.

In order to make the tire-type gantry crane 7 convenient for transition operations, a hook 4.3 is installed at the end of the traction rope 4 that is connected to the trolley 3 vehicle frame 3.1. To connect or break away from the dolly 3 and the rubber-tyred gantry crane 7, you only need to hang the hook 4.3 on the ring fixed to the end of the upper tie rod 5 of the rubber-tyred gantry crane 7 or take it off from the ring.

Claims (5)

1, a kind of electric supply installation of tire type gantry crane, be included on the fixed support and set up, with mains supply circuit bonded assembly wiping circuit, every trolley moving contact with the wiping circuit, pig-tail wire connects with the electric system of tire type gantry crane, be installed in the current colector on the band cushion rubber bumper dolly of rear and front end, dolly can parallelly with trolley move, and the left and right sides that is positioned at guide rail top in the car frame is fixed, the anti-canting hook that its gib head is relative with orbital groove, it is characterized in that: in the described parallel mobile car frame wheel is installed with trolley, trolley both sides below fixed support are fixed with parallel with trolley respectively, the guide rail that wheel can roll in the above; Wheel is vertical cube 8 to paired distribution on horizontal guide rail, is 8 that horizontal direction distributes in pairs erectting on the guide rail.

2, the electric supply installation of tire type gantry crane as claimed in claim 1 is characterized in that: described guide rail is across the both sides of trolley, and horizontal guide rail and the symmetrical horizontal distribution of setting guide rail difference.

3, the electric supply installation of tire type gantry crane as claimed in claim 1, it is characterized in that: described guide rail is an I-shape, be installed in the centre of four trolleys below the support, " worker " word two sides of I-shape guide rail are respectively as horizontal guide rail with erect guide rail.

4, the electric supply installation of tire type gantry crane as claimed in claim 1, it is characterized in that: the flexible connection mode of described dolly and tire type gantry crane is, flexible hauling rope one end is connected on the vehicle frame of dolly, the other end is connected on the frame of tire type gantry crane, and described hauling rope is by forming with elastomeric traction belt and tightrope parallel with it and that be longer than traction belt.

5, the electric supply installation of tire type gantry crane as claimed in claim 4, it is characterized in that: the connection mode of described hauling rope and tire type gantry crane frame is, at the traction end, the drag link end that can collude on hoisting crane is installed, can plucks the hook that to hang.

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