CN210620042U

CN210620042U - Windproof device for gantry crane

Info

Publication number: CN210620042U
Application number: CN201921531634.4U
Authority: CN
Inventors: 夏宗平; 赵文; 鲍虹睿
Original assignee: Masteel Heavy Machinery Manufacturing Co Of Anhui
Current assignee: Masteel Heavy Machinery Manufacturing Co Of Anhui
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-05-26
Anticipated expiration: 2029-09-12

Abstract

The utility model discloses a gantry crane safety device against wind belongs to the engineering machine tool field. The gantry crane windproof device comprises a gantry crane lower beam, a limiting pressure rod and a limiter switch, wherein the limiting pressure rod and the limiter switch are arranged on the gantry crane lower beam, the limiter switch is connected with a gantry crane control circuit, the limiting pressure rod can turn over and touch the limiter switch on the gantry crane lower beam, when the limiter switch is pressed down, the gantry crane control circuit is disconnected, when the limiting pressure rod turns over in the opposite direction and is separated from the limiter switch, the limiter switch resets, and the gantry crane control circuit is switched on. The utility model discloses gantry crane safety device against wind, simple structure, convenient to use can effectively reduce the emergence of incident.

Description

Windproof device for gantry crane

Technical Field

The utility model belongs to the engineering machine tool field, concretely relates to gantry crane safety device against wind.

Background

Gantry cranes, also known as gantry cranes, are used mainly for loading and unloading outdoor goods yard, stock yard and bulk goods. Because the structure size of the gantry crane is bigger, the influence of wind is very big under the outdoor condition, especially under the condition of not working, the gantry crane needs to be parked to a certain position, and when the gantry crane is parked, if the gantry crane is not fixed, the gantry crane can independently move along the track under the action of wind, so that accidents are very easy to happen. Therefore, in engineering practice, a plurality of windproof means are developed for fixing the gantry crane to prevent the gantry crane from moving by itself under the action of wind, for example, two-stage braking, rail clamping devices, rail jacking devices, wheel clamping devices, inertia brakes, manual wedges, electric hydraulic windproof iron wedge brakes and the like are adopted for increasing the braking torque of a gantry crane walking brake.

In the current practical engineering, a plurality of gantry cranes are provided with rail clamping devices, but when the rail clamping devices are adopted, the clamping resistance provided by the rail clamping devices is limited, so that the gantry cranes still move when wind is high, and therefore, in the practical engineering, a plurality of other windproof devices can be further used for fixing the gantry cranes, wherein one of the most common ways is to fix the gantry cranes at a specific position by using steel wire ropes or cables. For example, chinese patent No. 20089032757.5 discloses a windproof safety device for a rail-mounted crane, in which a gantry crane is fixed by means of a steel cable, one end of the steel cable is fixed to the gantry crane, and the other end of the steel cable is connected to a fixing device fixed to the ground or one end of a rail. Because the existing gantry crane can be controlled by a remote controller or manually controlled in a cab, in any mode, if an operator forgets to untie a steel wire rope or loosen a rail clamping device due to negligence, equipment can be damaged when the gantry crane is forcibly started, so that production is influenced, and serious safety accidents can be caused seriously. In view of the above problems, chinese patent No. 201320565000.7 discloses a cable wind prevention device with a limit switch, which determines whether a gantry crane has been unfastened by installing a limit switch on a lower beam of the gantry crane and transmitting a status signal of the limit switch to a control room, but the structure adopted by the patent is complicated and the operation is inconvenient.

According to the analysis, the problems existing in the prior art are as follows: the structure of the wind-proof device is complex, the operation is inconvenient, and accidents can easily occur due to negligence of personnel.

Disclosure of Invention

The technical problem is as follows: the utility model provides a simple structure, practical convenient, can effectively avoid the portal crane safety device against wind of incident emergence.

The technical scheme is as follows: the utility model relates to a gantry crane safety device against wind, be in including gantry crane bottom end rail, setting spacing depression bar and stopper switch on the gantry crane bottom end rail, the stopper switch is connected with gantry crane control circuit, spacing depression bar can overturn and touch the stopper switch on the gantry crane bottom end rail, and when the stopper switch was pushed down, gantry crane control circuit broke off, when spacing depression bar broke away from the stopper switch to the upset in the opposite direction, the stopper switch reset, and gantry crane control circuit switches on.

Furthermore, the limiting compression bar is installed on a lower cross beam of the gantry crane through a hinged lug seat.

Further, spacing depression bar is including connecting first depression bar section and the second depression bar section in an organic whole, the one end of first depression bar section is articulated with articulated ear seat, the other end and the one end fixed connection of second depression bar section.

Furthermore, a section of the first pressure rod section connected with the second pressure rod section is provided with a contact plane for pressing the limit switch.

Further, after the limit pressure rod presses the limit switch, an included angle α between the second pressure rod section and the horizontal plane is an acute angle.

Furthermore, the second pressure rod section is provided with an anti-skid bulge.

The gantry crane further comprises a connecting seat arranged on the lower cross beam of the gantry crane, a pin hole is formed in the connecting seat, a connecting hole is formed in one end of the limiting pressure rod, and when the limiting pressure rod is turned over to enable the connecting hole to be opposite to the pin hole, a bolt is inserted to connect and fix the limiting pressure rod and the connecting seat.

Has the advantages that: compared with the prior art, the utility model, have following advantage:

(1) the utility model discloses gantry crane safety device against wind through being provided with spacing depression bar and stopper switch on the portal crane bottom end rail to the stopper switch is connected with gantry crane control circuit, and spacing depression bar can overturn on the portal crane bottom end rail, when spacing depression bar upset to the contact and push down the stopper switch, gantry crane control circuit is the disconnection, and the gantry crane can not start, when spacing depression bar upset in the opposite direction to when breaking away from the stopper switch, the stopper switch resets, and gantry crane control circuit switches on, and the gantry crane can start. The utility model discloses increased spacing depression bar and stopper switch, simple structure on prior art basis. In the use process, the limiting compression bar is connected with a fixing device arranged on a guide rail of the gantry crane or at one end of the guide rail through a steel wire rope, so that the gantry crane is fixed, the gantry crane is in a non-working state at the moment, the gantry crane cannot be started, the steel wire rope must be untied, the limiting compression bar is turned over to be separated from the limit switch, the gantry crane can be started to work, therefore, when the device is used, the limiting compression bar only needs to be untied to be turned over to be separated from the limit switch, and the whole device is simple to operate. In addition, due to the existence of the limit switch, a layer of safety is equivalently set, the condition that the gantry crane is started when the steel wire rope is forgotten to be untied due to negligence of workers is avoided, and accidents and equipment damage are reduced.

(2) The utility model discloses a spacing depression bar includes first depression bar section and second depression bar section, first depression bar section is used for articulating with the portal crane bottom end rail, second depression bar section is used for tying wire rope, and one section of being connected at first depression bar section and second depression bar section sets up a contact surface, through setting up contact surface, make spacing depression bar and stopper joint contact more abundant, avoided the portal crane after being fixed, because spacing depression bar is not real with the stopper switch contact, the closed condition of portal crane control circuit appears, can effectually avoid the unexpected condition to take place. In addition, the anti-skid protrusions are arranged on the second pressure rod section, so that friction force can be increased, and the steel wire rope is prevented from falling off when the gantry crane is fixed, so that safety accidents are reduced.

(3) The utility model discloses an in the structure, still be provided with the connecting seat on the portal crane bottom end rail for fix spacing depression bar when portal crane operating condition, prevent because unexpected condition, make spacing depression bar in portal crane working process, turn over suddenly to the position with stopper switch contact, cause the portal crane to park suddenly, thereby cause the accident, through fixed with spacing depression bar, can effectually avoid this kind of condition to take place, thereby reduced the incident, avoided equipment to damage.

Drawings

Fig. 1 is a schematic structural view of the gantry crane wind-proof device of the present invention;

FIG. 2 is a circuit diagram of the connection between the limit switch of the windproof device of the gantry crane and the control circuit of the gantry crane of the present invention;

FIG. 3 is a structural diagram of the limiting pressure bar of the present invention;

FIG. 4 is a schematic view of a limiting pressure lever pressing a limiter switch when a gantry crane is in a fixed state;

FIG. 5 is a schematic diagram of the limiting pressure lever being separated from the limiter switch and connected with the connecting seat when the gantry crane is in a working state;

fig. 6 is a schematic structural diagram of the connection seat of the present invention.

The figure shows that: 1. a gantry crane beam; 2. a limiting pressure lever; 3. a limit switch; 4. a hinged ear mount; 5. a connecting seat; 6. a pin hole; 7. a bolt; 8. a wire rope; 9. a fixing device; 21. a first ram segment; 22. a second ram segment; 23. a contact plane; 24. anti-skid projections; 25. and connecting the holes.

Detailed Description

The invention is further described with reference to the following examples and the accompanying drawings.

Many portal cranes are usually arranged outdoors, and because the structural dimension is usually large, the portal cranes are easily influenced by wind, when the portal cranes are in a non-working state, if the wind is large, the portal cranes can be blown to move along the guide rail, meanwhile, the mass of the portal cranes is large, and if the gantry cranes move too fast, the portal cranes can be overturned, so that safety accidents are caused, and therefore, in order to avoid the problem of movement of the portal cranes caused by wind, the portal cranes are usually fixed in a non-working state. The general method is to arrange a fixing device 9, also called a ram, at one end of a gantry crane guide rail, which is equivalent to a captive pile and is mainly used for fixing the gantry crane, wherein the fixing device 9 can be a column or a cement block and can be directly arranged on the guide rail or fixed on the ground at the end part of the guide rail, and then the gantry crane and the fixing device 9 are fixed together by a steel wire rope 8, so that the gantry crane is prevented from blowing away by the lee, for example, in fig. 1, the fixing device 9 is arranged at one end of the guide rail.

As shown in figure 1, the utility model discloses gantry crane safety device against wind, including gantry crane bottom end rail 1, set up spacing depression bar 2 and stopper switch 3 on gantry crane bottom end rail 1, stopper switch 3 is connected with the control circuit of gantry crane. In the implementation process, the limiter switch 3 is connected in series in the gantry crane control circuit, the connection relationship of the limiter switch 3 in the gantry crane control circuit is shown in fig. 2, when the limiter switch 3 is pressed down, the whole control circuit is disconnected, at the moment, all switches except the limiter switch 3 in the control circuit are closed, the control circuit is also in the disconnected state, the gantry crane control system cannot lose control over the gantry crane, the gantry crane cannot be started, when the limiter switch 3 is reset, the whole control circuit is in the connected state, the gantry crane control system can control the gantry crane, and the gantry crane can be started. The limiting pressure rod 2 can turn over on the lower cross beam 1 of the gantry crane and can contact and press the limiting switch 3, when the limiting pressure rod 2 turns over to press the limiting switch 3, a control circuit of the gantry crane is disconnected, the gantry crane cannot be started to work, then the limiting pressure rod 2 is fixedly connected with the fixing device 9 through the steel wire rope 8, the gantry crane is fixed and prevented from being blown away by wind, and therefore the limiting pressure rod 2 is used for not only pressing the limiting switch 3 but also tying the steel wire rope, and the effect of tying a pile is achieved. When the gantry crane needs to be started, the steel wire rope 8 is unfastened, the limiting pressure rod 2 is reversely turned to be separated from the limiting switch 3, the gantry crane control circuit is conducted, at the moment, the gantry crane control system obtains the control right of the gantry crane, and the gantry crane can be started to work. In fig. 1, the limit switch 3 is located close to the fixing device 9, so that for the state of fig. 1, the limit pressure lever 2 can be turned counterclockwise around the hinge point with the gantry beam 1 to press the limit switch 3 and then be turned clockwise to disengage the limit switch 3. The utility model discloses an increase spacing depression bar 2 and stopper switch 3, simple structure, convenient operation to, if want to start the portal crane, must untie wire rope 8, overturn spacing depression bar 2 to breaking away from stopper switch 3, just can start the portal crane, thereby avoided because staff's carelessness forgets the condition that unties wire rope and just start the portal crane, reduced the emergence of incident and the damage of equipment.

The utility model discloses an among the preferred embodiment, set up an articulated ear seat 4 on portal crane bottom end rail 1, spacing depression bar 2 is articulated with articulated ear seat 4, therefore spacing depression bar 2 can be around 4 upsets of articulated ear seat, and spacing depression bar 2, articulated

ear seat

4 and 3 three's of stopper switch position can be specifically as shown in figure 1. The limiting pressure rod 2 comprises a first pressure rod section 21 and a second pressure rod section 22 which are connected into a whole, one end of the first pressure rod section 21 is hinged to the hinged lug seat 4, the other end of the first pressure rod section is fixedly connected with one end of the second pressure rod section 22, the other end of the second pressure rod section 22 is a free end, and as shown in fig. 3, the limiting pressure rod 2 is of an L-shaped structure. A contact plane 23 is arranged on a section of the limiting pressure rod 2, which is connected with the first pressure rod section 21 and the second pressure rod section 22, and the limiting switch 3 is pressed and disconnected by contacting the contact plane 23. The purpose of setting up contact plane 23 is that after stopper switch 3 was pushed down by spacing depression bar 2, stopper switch 3 and spacing depression bar 2 contact inseparabler, can not take place the contact unreal to the closed condition of control circuit appears in the portal crane under inoperative state, the effectual emergence of avoiding accident. In addition, when adopting preferred structure, wire rope is on second depression bar section 22, consequently is provided with the non-skid protrusion on second depression bar section 22 to when wire rope 8 ties spacing depression bar 2, wire rope 8 can not skid when spacing depression bar 2 contacts, thereby has avoided the portal crane to be fixed the back, because wire rope 8 is connected unstably with spacing depression bar 2, and the condition that wire rope 8 breaks away from the portal crane appears, avoids the emergence of incident.

Further, in order to prevent the steel cable 8 from falling off from the limiting pressure lever 2, after the limiting pressure lever 2 presses the limiting switch 3, an included angle α between the second pressure lever section 22 of the limiting pressure lever 2 and the horizontal plane is an acute angle, and the angle α refers to the angle as shown in fig. 1.

After the steel wire rope 8 is untied, the limiting compression bar 2 can be overturned to one side far away from the limiter switch 3, but when the gantry crane works, the limiting compression bar 2 can be overturned to the other side to press the limiter switch 3 due to some accident conditions, so that a control circuit of the gantry crane is disconnected, and the gantry crane stops suddenly. Therefore, in an embodiment of the present invention, the connection seat 5 disposed on the lower beam 1 of the gantry crane is further included, the connection seat 5 is provided with a pin hole 6, the structural schematic diagram of the connection seat 5 is shown in fig. 6, and in order to allow the limiting pressure rod 2 to be fixedly connected to the connection seat 5, one end of the limiting pressure rod 2 is provided with a connection hole 25, specifically, the connection hole 25 is provided at one end of the limiting pressure rod 2, which is free, for example, for the structure shown in fig. 2, the connection hole 25 is provided at one end of the second pressure rod section 22, which is free. When the limiting compression bar 2 is turned to the connecting hole 25 to be opposite to the pin hole 6, the bolt 7 is inserted, the limiting compression bar 2 and the connecting seat 5 are fixedly connected together, and the structural schematic diagram at the moment is shown in fig. 5, so that the situation that the limiting compression bar 2 is turned over to press the limiter switch 3 due to an accident situation in the working process of the gantry crane is avoided, a control circuit of the gantry crane is suddenly disconnected, and the gantry crane is suddenly stopped. In the specific implementation process, as shown in the state shown in fig. 1, the connecting seat 5 is arranged between the hinge lug seat 4 and the support leg of the gantry crane.

The utility model discloses gantry crane safety device against wind, simple structure, convenient to use to the effectual emergence of having avoided the incident.

The above examples are only preferred embodiments of the present invention, it should be noted that: it will be apparent to those skilled in the art that various modifications and equivalents can be made without departing from the spirit of the invention, and it is intended that all such modifications and equivalents fall within the scope of the invention as defined in the claims.

Claims

1. The utility model provides a portal crane safety device against wind, its characterized in that, includes portal crane bottom end rail (1), sets up spacing depression bar (2) and stopper switch (3) on portal crane bottom end rail (1), stopper switch (3) and portal crane control circuit are connected, spacing depression bar (2) can overturn and touch and press stopper switch (3) on portal crane bottom end rail (1), and when stopper switch (3) were pushed down, the switching off of portal crane control circuit, when spacing depression bar (2) breaks away from stopper switch (3) to the upset in the opposite direction, stopper switch (3) reset, and portal crane control circuit switches on.

2. The gantry crane windproof device according to claim 1, wherein the limiting pressure lever (2) is mounted on the lower beam (1) of the gantry crane through a hinged ear seat (4).

3. The gantry crane windproof device according to claim 2, wherein the limiting pressure lever (2) comprises a first pressure lever section (21) and a second pressure lever section (22) which are connected into a whole, one end of the first pressure lever section (21) is hinged with the hinged ear seat (4), and the other end of the first pressure lever section is fixedly connected with one end of the second pressure lever section (22).

4. A gantry crane wind guard according to claim 3, characterized in that a section of the first press rod section (21) connected with the second press rod section (22) is provided with a contact plane (23) for pressing the stopper switch (3).

5. The gantry crane wind guard according to claim 3 or 4, wherein the angle α between the second press rod segment (22) and the horizontal plane is acute after the limit press rod (2) presses the limit switch (3).

6. A gantry crane wind guard according to claim 3 or 4, characterized in that said second pressure bar segment (22) is provided with anti-slip protrusions (24).

7. The gantry crane windproof device according to claim 1, 2, 3 or 4, further comprising a connecting seat (5) arranged on the lower cross beam (1) of the gantry crane, wherein the connecting seat (5) is provided with a pin hole (6), one end of the limiting pressure lever (2) is provided with a connecting hole (25), and when the limiting pressure lever (2) is turned over until the connecting hole (25) is opposite to the pin hole (6), a bolt (7) is inserted to connect and fix the limiting pressure lever (2) and the connecting seat (5).