CN204588514U - Offside system prevented by mono beam overhead crane - Google Patents

Abstract

The utility model embodiment discloses a kind of mono beam overhead crane and prevents offside system; hoisting crane drives end carriage to run on end carriage track by cart; electric block runs on girder track with dolly; the vehicle frame of cart and/or dolly is provided with guide wheel device; the wheel shaft position of guide wheel device adjustable guide wheel body; it is characterized in that; anti-offside system series contactor between the motor protective circuit breaker and frequency converter of motor control loop of control mechanism, to stop motor running when there is offside fault.The utility model improves mono beam overhead crane and subsystem thereof, can reduce manufacturing cost, ensure the performance of improving product in smooth running or raising safety performance etc.

Description

Offside system prevented by mono beam overhead crane

Technical field

The utility model relates to elevator machinery, particularly relates to mono beam overhead crane and subsystem thereof.

Background technology

Mono beam overhead crane (driving) is a kind of common elevator machinery, comprise the parts such as roof beam structure, cart, dolly, electric block and control mechanism: roof beam structure is made up of with the girder being connected end carriage both sides end carriage, end carriage is driven by cart and runs on end carriage track, electric block runs on girder track with dolly, thus by the workpiece of suspension hook lifting relevant position.Structurally there is certain defect in existing mono beam overhead crane: such as, and girder and end carriage are the case structure of assembly welding, and material use is reasonable not, is unfavorable for reducing costs; And for example, the track adjusting wheel of cart and dolly all can not adjust the gap with track, affects running stability; For another example, intermediate steps during the anti-offside system-down of cart, dolly and electric block is more, if certain link goes wrong, will cause cannot stopping in time and safety misadventure occurring; Etc..Because above-mentioned all many-sided deficiencies, be necessary to be improved existing mono beam overhead crane.

Utility model content

For the defect that prior art exists, the object of the utility model embodiment is to improve mono beam overhead crane and subsystem thereof, so that the performance of improving product at least in one aspect.

For solving above technical matters; the utility model embodiment provides a kind of mono beam overhead crane to prevent offside system; hoisting crane drives end carriage to run on end carriage track by cart; electric block runs on girder track with dolly; the vehicle frame of cart and/or dolly is provided with guide wheel device; the wheel shaft position of guide wheel device adjustable guide wheel body; anti-offside system series contactor between the motor protective circuit breaker and frequency converter of motor control loop of control mechanism, to stop motor running when there is offside fault.

More preferably, the offside switch series in upper bottom is linked to the control loop of contactless switch.

More preferably, the offside unlock key knob of the offside switch in parallel in upper bottom.

More preferably, girder has that top is rectangle, bottom is the cross section of equicrural triangle, and end carriage has inverted U-shaped cross section.

More preferably, guide wheel device comprises L shape track adjusting wheel bearing, track adjusting wheel body, wheel shaft, connection rotating plate and pressing plate, track adjusting wheel bearing is arranged on vehicle frame, a bottom edgefold of track adjusting wheel bearing offers strip shape bearing axis hole, wheel shaft runs through bearing axis hole and can carry out transverse shifting along perpendicular to track bearing of trend, track adjusting wheel body is rotatably installed on the first end of wheel shaft by bearing, and connection rotating plate is by being fixed in the second end of wheel shaft relative to the pressing plate of track adjusting wheel support outer and fastener.

Compared with prior art, the utility model embodiment is improved mono beam overhead crane and subsystem thereof, properties of product can be improved thus, it shows in the following areas: girder forms the section form of rectangle+equicrural triangle by roof limb plate, front and back side plate and front and back web, end carriage forms inverted U-shaped section form by top board and left side plate, on the basis of proof strength, effectively can reduce the cost of roof beam structure; Track adjusting wheel body wheel shaft position in cart, car frame can adjust, and the convenient gap regulating track adjusting wheel body and track, is conducive to ensureing complete machine running stability; In the major loop of the electric machine control of anti-offside system, install a contactless switch between motor protective circuit breaker and frequency converter additional, contribute to the operation stopping motor fast, thus effectively reduce safety misadventure.

Accompanying drawing explanation

Fig. 1 a is the front view of the utility model mono beam overhead crane;

Fig. 1 b is the birds-eye view of the utility model mono beam overhead crane;

Fig. 1 c is the right elevation of the utility model mono beam overhead crane;

Fig. 2 a is the front view of the utility model mono beam overhead crane middle girder;

Fig. 2 b is the birds-eye view of the utility model mono beam overhead crane middle girder;

Fig. 2 c is the utility model mono beam overhead crane middle girder A-A view;

Fig. 3 a is the front view of end carriage in the utility model mono beam overhead crane;

Fig. 3 b is the birds-eye view of end carriage in the utility model mono beam overhead crane;

Fig. 4 is the guide wheel device schematic diagram of dolly in the utility model mono beam overhead crane;

Fig. 5 a is the electrical schematic diagram of anti-offside system in the utility model mono beam overhead crane;

Fig. 5 b is the electrical connection graph of the offside switch of anti-offside system in the utility model mono beam overhead crane.

Detailed description of the invention

In order to understand know-why and the working process of the utility model embodiment better, come to be described in detail the utility model further below in conjunction with drawings and the specific embodiments.

Simultaneously see Fig. 1 a-Fig. 1 c, the complete machine structure of the utility model mono beam overhead crane is shown.Mono beam overhead crane (hereinafter referred to as hoisting crane) as shown in Fig. 1 a-Fig. 1 c, middle girder 2 and both sides end carriage 3 are connected as roof beam structure, end carriage track 11b is fixed on workshop steel structure 1 by end carriage track bearing 11a, end carriage 3 can run under cart (comprise main motor train unit 12a and by motor train unit 12b) drives on end carriage track 11b, electric block 7 runs on girder track with dolly 4, manipulate hoisting crane by remote controller 5 to move in three directions, suspension hook 8 can lift by crane the workpiece (scheming not shown) of relevant position easily.

In roof beam structure shown in Fig. 1 a-Fig. 1 c, girder 2 and end carriage 3 are formed by some sheet material assembly weldings, its middle girder 2 has the section form being approximately rectangle+equicrural triangle, end carriage 3 has and is approximately inverted U-shaped section form, like this on the basis of proof strength, effectively can reduce the cost of roof beam structure, illustrate further below.

See Fig. 2 a ~ Fig. 2 c, the structure of the utility model mono beam overhead crane middle girder is shown.This girder 2 is become to have the section form girder casing being approximately rectangle+equicrural triangle by assembly weldings such as roof limb plate 26, front and back side plate 23, front and back webs 24, the end connecting panel 25b of this girder casing and end carriage 3 bolted, the front and back web 24 of girder bottom half welds girder track 28 and runs to carry dolly 4.Further, front and back side plate 23 in girder casing runs through some support pipes 27, girder box house installs multiple dividing plate 22 additional, girder track 28 welds brace panel 29, girder track 28 end is fixed with one by bottom connecting plate 25a and end connecting panel 25b, is conducive to the intensity strengthening girder 2 like this.

As shown in Fig. 2 a ~ Fig. 2 c, girder 2 carrys out the electrical equipments such as installing cables arranging electric support 6 close to medium position, is carrying out installation carriage energy disperser 21b with the impact avoiding the anxious stopping time to produce near end positions respectively by dolly bumper support 21a.In addition, this girder 2 also adds the annex such as nameplate 9, tonnage board 10 above, does not repeat them here.

See Fig. 3 a ~ Fig. 3 b, the structure of end carriage in the utility model mono beam overhead crane is shown.This end carriage 3 forms by top board 32, left side plate 31 the end carriage casing being approximately inverted U-shaped section form: end L shape cover plate 33 shutoff of this end carriage casing, the bottom edgefold of this cover plate 33 can be held left side plate 31 simultaneously and gain in strength, and this cover plate 33 is also installed cart energy disperser 36 simultaneously and reduces to impact; The middle part of this end carriage casing left side plate 31 installs adapter plate 34 additional and fixes the end connecting panel 25b connecting girder 2, reinforcement gusset is welded respectively to install cart in the position that this end carriage casing left side plate 31 installs cart close to end, wherein strengthen gusset 35a place and main motor train unit 12a is installed, strengthen gusset 35b place and install by motor train unit 12b.After the electric motor starting of main motor train unit 12a, end carriage runs along end carriage track 11b under cart drives.

See Fig. 4, the guide wheel device of dolly in the utility model mono beam overhead crane is shown.This guide wheel device can be installed on the vehicle frame of cart and dolly, can adjust the gap with track easily thus, can ensure hoisting crane running stability thus.Below so that guide wheel device 41 to be installed by dolly 4, be described in detail.

As shown in Figure 4, this guide wheel device 41 is made up of the parts such as track adjusting wheel bearing 413, track adjusting wheel body 412, wheel shaft (figure does not indicate), connection rotating plate 414, pressing plate 415, further describes as follows.On the vehicle frame of L shape track adjusting wheel bearing 413 installation carriage 4, its bottom edgefold offers strip shape bearing axis hole 420, wheel shaft runs through this bearing axis hole 420 and can be mobile along carrying out transverse direction (wheel shaft is vertical) perpendicular to track bearing of trend, track adjusting wheel body 412 is rotatably installed on the first end of wheel shaft by bearing, connection rotating plate 414 is by being fixed in the second end of wheel shaft relative to the pressing plate 415 outside track adjusting wheel bearing 413 and socket head cap screw 416 (or other fastener), wheel shaft 3 can be fixed on connection rotating plate 7 by this connection mode easily, operation connection rotating plate 414 can make wheel shaft drive track adjusting wheel body 412 transverse shifting.

As shown in Figure 4, connection rotating plate 414 in the present embodiment can rotate, concrete structure is: the first end of connection rotating plate 414, using socket head cap screw 411 as the hinging pin shaft between connection rotating plate 414 and track adjusting wheel bearing 413, makes the first end of connection rotating plate 414 be hinged on track adjusting wheel bearing 413; Some flap knock holees 419 can be offered above second end of connection rotating plate 414, and on track adjusting wheel bearing 413, correspondingly offer bearing knock hole (scheming not shown), assemble socket head cap screw 417 in this flap knock hole 419 and bearing knock hole, and the second end of connection rotating plate 414 just can be lock onto on track adjusting wheel bearing 413 by bonding pad 418.Second end of connection rotating plate 414 herein offers arc strip flap knock hole 419, and its bearing of trend is corresponding with the hand of rotation of connection rotating plate 414, interferes to avoid mobile generation of socket head cap screw 417 pairs of connection rotating plates 414.After connection rotating plate 414 drives wheel shaft to rotate in place, just can connection rotating plate 414 be locked on track adjusting wheel bearing 413 after screwing socket head cap screw 417, finally achieve the adjustment of track adjusting wheel body 412 and track space.

Simultaneously see Fig. 5 a-Fig. 5, illustrate that the utility model prevents the circuit structure of offside system.This anti-offside system can be used for cart, dolly and electric block, and its electrical structure is: in the control loop of motor M 01, adds a contactless switch KM01 between motor protective circuit breaker QF01 and frequency converter VF01; The offside switch S Q01 in upper bottom, SQ02 are connected in series in the control loop of this contactless switch KM01.Herein; the terminal 1-6 of motor protective circuit breaker QF01; A1, A2 (three groups of terminals 1,2) of contactless switch KM01; terminal R, S, T, V, W, PE of frequency converter VF01; the terminal 11,12 of offside switch S Q01, SQ02; and the terminal 13,14 of offside unlock key knob SB01 is connected with Fig. 5 b according to Fig. 5 a, no longer specifically launches explanation.

After offside switch S Q01 or SQ02 is triggered, directly cut off the coil power of contactless switch KM01, contactless switch KM01 discharges, and cuts off the power supply in frequency converter VF01 loop thus, thus stops the operation of motor M 01 fast; After this, can unlock by rotating offside unlock key knob SB01.This mode, decreases the intermediate link processing offside signal, and time fault is occurred, motor can stop at once, avoids the damage of equipment and the injures and deaths of personnel.

Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; can make possible variation and amendment, the scope that therefore protection domain of the present utility model should define with the utility model claim is as the criterion.

Claims (5)

1. offside system prevented by a mono beam overhead crane; hoisting crane drives end carriage to run on end carriage track by cart; electric block runs on girder track with dolly; the vehicle frame of cart and/or dolly is provided with guide wheel device; the wheel shaft position of guide wheel device adjustable guide wheel body; it is characterized in that, anti-offside system series contactor between the motor protective circuit breaker and frequency converter of motor control loop of control mechanism, to stop motor running when there is offside fault.

2. offside system prevented by mono beam overhead crane as claimed in claim 1, and it is characterized in that, the offside switch series in upper bottom is linked to the control loop of contactless switch.

3. offside system prevented by mono beam overhead crane as claimed in claim 2, it is characterized in that, the offside unlock key knob of the offside switch in parallel in upper bottom.

4. offside system prevented by mono beam overhead crane as claimed in claim 1, it is characterized in that, girder has that top is rectangle, bottom is the cross section of equicrural triangle, and end carriage has inverted U-shaped cross section.

5. mono beam overhead crane as claimed in claim 1, it is characterized in that, guide wheel device comprises L shape track adjusting wheel bearing, track adjusting wheel body, wheel shaft, connection rotating plate and pressing plate, track adjusting wheel bearing is arranged on vehicle frame, a bottom edgefold of track adjusting wheel bearing offers strip shape bearing axis hole, wheel shaft runs through bearing axis hole and can carry out transverse shifting along perpendicular to track bearing of trend, track adjusting wheel body is rotatably installed on the first end of wheel shaft by bearing, and connection rotating plate is by being fixed in the second end of wheel shaft relative to the pressing plate of track adjusting wheel support outer and fastener.