Relay-controlled trolley mechanism interval anti-collision device of remote control crane

Abstract

The utility model discloses a relay-controlled trolley mechanism interval anti-collision device of a remote control crane, which belongs to the field of hoisting equipment and comprises a cross switch SQ1 and a cross switch SQ2 which are respectively arranged on crane cart end beams on two sides of an important equipment area; the cross switch SQ3 is arranged on one side, close to the important equipment area, of the trolley track; the first collision iron and the second collision iron are arranged on the two sides of an important equipment area on the outer side of the cart track; the third collision iron is arranged on the corner, closest to the important equipment area, of the trolley; the cross switch SQ1 and the cross switch SQ2 are both electrically connected with the relay KA1, and the cross switch SQ3 is electrically connected with the relay KA2. The cart and the trolley are limited through the cross switch and the collision iron, so that the trolley can only run at a safe position when the cart reaches the position above an important equipment area, and the probability that a driver of the remote control crane collides with important equipment on the ground is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting equipment, and particularly relates to an anti-collision device for the trolley mechanism in the interval of a remotely controlled crane controlled by a relay. Background Art

[0002] A crane is a device that performs lifting work in a factory building through the cooperation of a trolley running system, a crab running system and a hoisting system. The remotely controlled crane controlled by a relay has low cost, fast start-stop response speed and simple operation, and does not require a professional crane driver to be competent for the operation of the crane. In the iron and steel enterprises, the layout of ground equipment is complex. When the crane hoists an object, it must follow a safe hoisting route. Otherwise, it is easy to collide with ground equipment or personnel, resulting in accidents. The maintenance personnel operating the remotely controlled crane are not fixed, not very clear about the safe route, or when the trolley walks to a certain area and the crab mechanism is misoperated, it will cause the crane to accidentally collide with ground equipment. Because the crane controlled by relay cannot be programmed arbitrarily to improve the anti-collision function, collision accidents often occur. Content of the Utility Model

[0003] The purpose of the utility model is to provide an anti-collision device for the trolley mechanism in the interval of a remotely controlled crane controlled by a relay, which is used to solve at least one aspect of the technical problems mentioned in the background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] An anti-collision device for the trolley mechanism in the interval of a remotely controlled crane controlled by a relay, comprising:

[0006] Cross switches SQ1 and SQ2 respectively arranged on the end beams of the trolley of the crane on both sides of the important equipment area;

[0007] A cross switch SQ3 arranged on one side of the trolley track close to the important equipment area;

[0008] A first bumper and a second bumper arranged on both sides of the important equipment area outside the trolley track;

[0009] A third bumper arranged at the corner of the trolley closest to the important equipment area;

[0010] The cross switch SQ1 and the cross switch SQ2 are both electrically connected to a relay KA1, and the cross switch SQ3 is electrically connected to a relay KA2.

[0011] The cross switch is used for the control and function switching of the circuit, while the bumper is a key component in the travel switch and is used to realize the limit protection of mechanical movement.

[0012] As a further solution of the present utility model: The cross switches SQ1 and SQ2 are used for the limit of the overhead traveling crane.

[0013] As a further solution of the present utility model: The cross switch SQ3 and the bumper are used for the limit of the trolley.

[0014] As a further solution of the present utility model: The control circuit of the relay includes a forward circuit, a reverse circuit, a main hoist interlock circuit and a trolley interlock circuit connected in parallel.

[0015] As a further solution of the present utility model: The forward circuit includes a contactor K01 coil, a self-locking point of the K01 contact, the S91 front limit, the master contacts 3 and 4 connected in series in sequence, and the closed points of the resistance-cutting contactors K40, K41, K42, K43 connected in parallel with the K01 contact and connected in series in sequence.

[0016] As a further solution of the present utility model: The reverse circuit includes a contactor K02 coil, a self-locking point of the K02 contact, the closed points of KA1 and KA2 connected in parallel, the S92 rear limit, the master contacts 5 and 6 connected in series in sequence, and the closed points of the resistance-cutting contactors K44, K45, K46, K47 connected in parallel with the K02 contact and connected in series in sequence.

[0017] As a further solution of the present utility model: The main hoist interlock circuit includes a relay KA1 coil, the cross switch SQ2, and the cross switch SQ1 connected in series in sequence.

[0018] As a further solution of the present utility model: The trolley interlock circuit includes a relay KA2 coil and the cross switch SQ3 connected in series in sequence.

[0019] A relay is an electronic control device, which is widely used in the fields of automatic control, safety protection and circuit conversion. Its basic working principle is to control the current or voltage in the output circuit through the change of the input quantity.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. The present utility model sets the limits of the overhead traveling crane and the trolley through the cross switches and the bumper, delimits an important equipment area, so that when the overhead traveling crane reaches above the important equipment area, the trolley can only run in a safe position, reducing the probability of the remote control crane driver colliding with important ground equipment.

[0022] 2. For the relay control crane that cannot perform arbitrary programming control, this idea can be borrowed to achieve anti-collision protection for any position within the crane track range. It has the advantages of wide practicability and economy. Brief Description of the Drawings

[0023] For the convenience of those skilled in the art to understand, the following further describes the present utility model in conjunction with the accompanying drawings.

[0024] Figure 1 It is a composition structure diagram of an anti-collision device for the trolley mechanism in the interval of a remotely controlled crane controlled by a relay;

[0025] Figure 2 It is a control circuit diagram of an anti-collision device for the trolley mechanism in the interval of a remotely controlled crane controlled by a relay.

[0026] In the figure: 101, the first striker; 102, the cross switch SQ1; 103, the cross switch SQ2; 104, the second striker; 105, the cross switch SQ3; 106, the third striker; 107, the trolley track; 108, the trolley; 109, the trolley crane. Specific embodiments

[0027] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0029] The present utility model is only limited by the claims and their full scope and equivalents. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] Please refer to Figures 1 to 2 , in an embodiment of the present utility model, an anti-collision device for the trolley mechanism in the interval of a remotely controlled crane controlled by a relay includes:

[0032] Cross switches SQ1 and SQ2 respectively arranged on the end beams of the crane gantry on both sides of the important equipment area;

[0033] Cross switch SQ3 arranged on one side of the trolley track close to the important equipment area;

[0034] First striker 101 and second striker 104 arranged on both sides of the important equipment area outside the gantry track 107;

[0035] Third striker 106 arranged at the corner of the trolley 108 closest to the important equipment area;

[0036] Both cross switch SQ1 and cross switch SQ2 are electrically connected to relay KA1, and cross switch SQ3 is electrically connected to relay KA2.

[0037] As a further scheme of the present utility model: Cross switches SQ1 and SQ2 are used for the limit of the gantry.

[0038] As a further scheme of the present utility model: Cross switch SQ3 and striker 106 are used for the limit of the trolley.

[0039] As a further scheme of the present utility model: The control circuit of the relay includes a forward circuit, a reverse circuit, a gantry interlock circuit, and a trolley interlock circuit connected in parallel.

[0040] As a further scheme of the present utility model: The forward circuit includes a contactor K01 coil, a self-locking point of the K01 open contact, an S91 front limit, master contacts 3 and 4 connected in series in sequence, and closed contacts of resistor-cutting contactors K40, K41, K42, and K43 connected in parallel with the K01 open contact and connected in series in sequence.

[0041] As a further solution of the utility model: the backward circuit includes a contactor K02 coil, a self-locking point of the K02 open contact, a normally-closed contact of KA1 and a normally-closed contact of KA2 in parallel, an S92 rear limit switch, master contacts 5 and 6, and normally-closed contacts of a resistor-cutting contactor K44, K45, K46, K47 connected in series in parallel with the K02 open contact.

[0042] As a further solution of the utility model: the cart interlock circuit includes a coil of a relay KA1, a cross switch SQ2, and a cross switch SQ1 connected in series in sequence.

[0043] As a further solution of the utility model: the trolley interlock circuit includes a coil of a relay KA2 and a cross switch SQ3 connected in series in sequence.

[0044] In this embodiment, as Figure 1 shown, two cross switches 103 and 102 are installed on the outer sides of the south end beam and the north end beam of the crane respectively. Two bumpers 104 and 101 are welded on the outer railings of the cart track 107. A bumper 106 is welded on the outer side of the southwest corner end beam of the trolley. A cross switch 105 is installed at the southwest corner near the driver's cab side of the trolley track. Three cables are arranged to connect the cross switches and the trolley screen components.

[0045] In this embodiment, as Figure 2 shown, points 3 and 4 are the forward gears of the trolley, points 5 and 6 are the backward gears of the trolley, K01 is the forward direction contactor of the trolley, K02 is the backward direction contactor of the trolley, SQ1 is the cross switch limit of the north end beam of the cart, SQ2 is the cross switch limit of the south end beam of the cart, SQ3 is the cross switch limit of the driver's cab side of the trolley, KA1 is the detection relay of SQ1 and SQ2, and KA2 is the detection relay of SQ3. The anti-collision area is set mainly through SQ1, SQ2 and SQ3 on the crane. When the crane is north of the anti-collision area, the open contact of SQ1 and the closed contact of SQ2 do not act, and the KA1 coil is not powered. When the crane is within the anti-collision area, the open contact of SQ1 becomes a closed contact, the closed contact of SQ2 does not act, and the KA1 coil is powered. When the crane is south of the anti-collision area, the open contact of SQ1 becomes a closed contact, the closed contact of SQ2 becomes an open contact, and the KA1 coil is not powered. When the KA1 coil is powered and the crane enters the set anti-collision area, when the trolley touches the SQ3 limit, the KA2 coil is powered. Thus, the normally-closed contacts of KA1 and KA2 in the backward electrical circuit of the trolley become open contacts, the K02 coil cannot be powered, and the trolley cannot retreat towards the driver's cab side, thereby avoiding the trolley hitting the ground equipment. If the trolley or the cart leaves this set area, it is not restricted by this function.

[0046] The above content is only an example and explanation of the structure of the present utility model. Those skilled in the art to which the present technology pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims of the present application, they shall fall within the protection scope of the present utility model.

Claims

1. An anti-collision device for the trolley mechanism in the interval of a relay-controlled remote-controlled crane, characterized in that, Including: Cross switches SQ1 (102) and SQ2 (103) respectively arranged on the end beams of the crane trolley on both sides of the important equipment area; Cross switch SQ3 (105) arranged on one side of the trolley track close to the important equipment area; First striker (101) and second striker (104) arranged on both sides of the important equipment area outside the trolley track (107); Third striker (106) arranged at the corner of the trolley (108) closest to the important equipment area; The cross switch SQ1 (102) and the cross switch SQ2 (103) are both electrically connected to the relay KA1, and the cross switch SQ3 (105) is electrically connected to the relay KA2.

2. The anti-collision device for the trolley mechanism interval of a remotely controlled crane controlled by a relay according to claim 1, characterized in that, The cross switch SQ1 (102) and the cross switch SQ2 (103) are used for the limit of the trolley.

3. The anti-collision device for the trolley mechanism interval of a remotely controlled crane controlled by a relay according to claim 1, characterized in that, The cross switch SQ3 (105) and the striker (106) are used for the limit of the trolley.

4. The anti-collision device for the trolley mechanism interval of a remotely controlled crane controlled by a relay according to claim 1, characterized in that, The control circuit of the relay includes a forward circuit, a reverse circuit, a trolley interlock circuit and a crane interlock circuit connected in parallel.

5. The anti-collision device for the trolley mechanism interval of a remotely controlled crane controlled by a relay according to claim 4, characterized in that, The forward circuit includes a contactor K01 coil, a self-locking point of the K01 contact, an S91 front limit, master contacts 3 and 4 connected in series in sequence, and closed points of a resistance-cutting contactor K40, K41, K42, K43 connected in parallel with the K01 contact and connected in series in sequence.

6. The anti-collision device for the trolley mechanism interval of a remotely controlled crane controlled by a relay according to claim 4, characterized in that, The reverse circuit includes a contactor K02 coil, a self-locking point of the K02 contact, closed points of KA1 and KA2 connected in parallel, an S92 rear limit, master contacts 5 and 6 connected in series in sequence, and closed points of a resistance-cutting contactor K44, K45, K46, K47 connected in parallel with the K02 contact and connected in series in sequence.

7. The anti-collision device for the trolley mechanism interval of a remotely controlled crane controlled by a relay according to claim 4, characterized in that, The trolley interlock circuit includes a relay KA1 coil, a cross switch SQ2 (103), and a cross switch SQ1 (102) connected in series in sequence.

8. The anti-collision device for the trolley mechanism interval of a relay-controlled remote crane according to claim 4, characterized in that, The crane interlock circuit includes a relay KA2 coil and a cross switch SQ3 (105) connected in series in sequence.

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