Anti-collision device for electric hoist of crane

Abstract

The utility model provides an anti-collision device for an electric hoist of a crane. The anti-collision device comprises a first buffer mechanism mounted on the electric hoist and a second buffer mechanism mounted on the lower side of a main beam, the first buffer mechanism is provided with a first guide rod, the second buffer mechanism is provided with a second guide rod, the first buffer mechanism is provided with a first guide hole corresponding to the second guide rod, and the second buffer mechanism is provided with a second guide hole corresponding to the first guide rod; the first buffer mechanism is provided with a travel switch, and the second buffer mechanism is provided with a contact block corresponding to the travel switch. According to the anti-collision device for the electric hoist of the crane, a first buffer mechanism is installed on the lower side of a main beam, a second buffer mechanism is installed on the electric hoist, the electric hoist walks along a track, and when the first buffer mechanism makes contact with the second buffer mechanism, a first guide rod correspondingly penetrates into a second guide hole, and a second guide rod correspondingly penetrates into a first guide hole.

Description

Technical Field

[0001] The utility model relates to a crane accessory, in particular to an anti-collision device for an electric hoist of a crane. Background Art

[0002] Electric hoist is a kind of lifting equipment, which can be installed on overhead crane and gantry crane to lift heavy objects. Electric hoist has the characteristics of small size, light weight, simple operation and convenient use. It can be used in industrial and mining enterprises, warehouses, docks and other places. In order to ensure the safety during use, anti-collision devices are usually installed at both ends of the electric hoist or the electric hoist running track. For example: the electric hoist with anti-collision limit device disclosed in Chinese patent CN216737263U has anti-collision mechanisms installed on both sides of the electric hoist, and the safety anti-collision device of a gantry crane disclosed in Chinese patent CN214570233U has an anti-collision mechanism installed on the lower side of the track main beam. However, these two anti-collision mechanisms cannot cooperate with each other.

[0003] In order to solve the above problems, people have been seeking an ideal technical solution. Utility Model Content

[0004] The utility model aims to provide an anti-collision device for an electric hoist of a crane in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A collision prevention device for an electric hoist of a crane comprises a first buffer mechanism installed on the electric hoist and a second buffer mechanism installed on the lower side of a main beam; the first buffer mechanism is provided with a first guide rod, the second buffer mechanism is provided with a second guide rod, the first buffer mechanism is provided with a first guide hole corresponding to the second guide rod, and the second buffer mechanism is provided with a second guide hole corresponding to the first guide rod; the first buffer mechanism is provided with a travel switch, and the second buffer mechanism is provided with a contact block corresponding to the travel switch.

[0007] The first buffer mechanism includes a first mounting plate, a first buffer plate and a first buffer spring connecting the first mounting plate and the first buffer plate. A plurality of first mounting holes, first guide holes and third guide holes are evenly provided on the first mounting plate. One end of the first guide rod is fixedly connected to the first mounting plate, and the other end of the first guide rod is arranged through the third guide hole.

[0008] The second buffer mechanism includes a second mounting plate, a second buffer plate and a second buffer spring located between the second mounting plate and the second buffer plate. A plurality of second mounting holes, second guide holes and fourth guide holes are evenly opened on the second mounting plate. One end of the second guide rod is fixedly connected to the second mounting plate, and the other end of the second guide rod is arranged through the fourth guide hole.

[0009] A first limit platform is provided at both ends of the first guide rod, and a second limit platform is provided at both ends of the second guide rod. The outer diameter of the first limit platform is larger than the inner diameter of the third guide hole and smaller than the inner diameter of the second guide hole; the outer diameter of the second limit platform is larger than the inner diameter of the fourth guide hole and smaller than the inner diameter of the first guide hole.

[0010] The first buffer spring is sleeved on the first guide rod, one end of the first buffer spring is connected to the first buffer plate, and the other end of the first buffer spring is connected to the first limit platform; the second buffer spring is sleeved on the second guide rod, one end of the second buffer spring is connected to the second buffer plate, and the other end of the second buffer spring is connected to the second limit platform.

[0011] The travel switch is installed on the first buffer plate, and the contact block is installed on the second buffer plate.

[0012] Compared with the prior art, the utility model has the beneficial effect that the utility model provides an anti-collision device for an electric hoist of a crane, the first buffer mechanism is installed on the lower side of the main beam, the second buffer mechanism is installed on the electric hoist, the electric hoist moves along the track, when the first buffer mechanism and the second buffer mechanism contact, the travel switch abuts against the contact block, and the travel switch controls the electric hoist to stop; if the electric hoist continues to move forward, the first guide rod correspondingly penetrates into the second guide hole, and the second guide rod correspondingly penetrates into the first guide hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the first buffer mechanism in the utility model.

[0015] Figure 3 It is a structural schematic diagram of the second buffer mechanism in the utility model.

[0016] In the figure: 1. first mounting plate; 2. second mounting plate; 3. first mounting hole; 4. second mounting hole; 5. first buffer plate; 6. second buffer plate; 7. first guide hole; 8. second guide hole; 9. first guide rod; 10. second guide rod; 11. first buffer spring; 12. second buffer spring; 13. first limit platform; 14. second limit platform. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0018] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. "Installed", "provided with", "connected", etc. can adopt conventional means in the prior art, such as: integral setting, snap-on installation, welding connection, adhesive connection, bolt connection, etc. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances, and suitable connection, setting or installation methods can be selected in the prior art.

[0019] like Figure 1-3 As shown, an anti-collision device for an electric hoist of a crane comprises a first buffer mechanism installed on the electric hoist and a second buffer mechanism installed on the lower side of the main beam; a first guide rod 9 is arranged on the first buffer mechanism, a second guide rod 10 is arranged on the second buffer mechanism, a first guide hole 7 is arranged on the first buffer mechanism corresponding to the second guide rod 10, and a second guide hole 8 is arranged on the second buffer mechanism corresponding to the first guide rod 9; referring to the accompanying drawings, for the convenience of matching, the second guide rod and the first guide rod are arranged crosswise; a travel switch is arranged on the first buffer mechanism, and a contact block is arranged on the second buffer mechanism corresponding to the travel switch.

[0020] During use, the first buffer mechanism is installed on the lower side of the main beam, and the second buffer mechanism is installed on the electric hoist. The electric hoist moves along the track. When the first buffer mechanism and the second buffer mechanism contact, the travel switch abuts against the contact block, and the travel switch controls the electric hoist to stop; if the electric hoist continues to move forward, the first guide rod correspondingly penetrates into the second guide hole, and the second guide rod correspondingly penetrates into the first guide hole.

[0021] Specifically, the utility model is mainly applied to conventional electric hoist single-beam cranes in the prior art. The traveling wheels of the electric hoist can travel along the track on the main beam. The travel switch and the driving motor of the traveling wheels of the electric hoist, the travel switch is a common switch in the prior art, and its connection circuit and control circuit both adopt conventional circuits in the prior art. This is not the key to solving the technical problem of the utility model and will not be elaborated.

[0022] In one embodiment, the first buffer mechanism includes a first mounting plate 1, a first buffer plate 5, and a first buffer spring 11 connecting the first mounting plate 1 and the first buffer plate 5. The first mounting plate 1 is evenly provided with a plurality of first mounting holes 3, first guide holes 7, and third guide holes. One end of the first guide rod 9 is fixedly connected to the first mounting plate 1, and the other end of the first guide rod 9 is arranged through the third guide hole. In the specific use process, the first mounting hole is used to connect with the housing of the electric hoist, and a mounting plate is correspondingly arranged on the housing of the electric hoist, and a mounting hole is arranged to facilitate fixing by bolts; the first buffer plate can move along the first guide rod.

[0023] In one embodiment, the second buffer mechanism includes a second mounting plate 2, a second buffer plate 6, and a second buffer spring 12 located between the second mounting plate 2 and the second buffer plate 6. The second mounting plate 2 is evenly provided with a plurality of second mounting holes 4, second guide holes 8, and fourth guide holes. One end of the second guide rod 10 is fixedly connected to the second mounting plate 2, and the other end of the second guide rod 10 is arranged through the fourth guide hole. In the specific use process, the second mounting hole is used to connect with the leg on the lower side of the main beam, and the leg is correspondingly provided with a mounting plate and a mounting hole, so as to facilitate fixing by bolts; the second buffer plate can move along the second guide rod.

[0024] In one of the embodiments, first limit platforms 13 are respectively provided at both ends of the first guide rod 9, and second limit platforms 14 are respectively provided at both ends of the second guide rod 10. The outer diameter of the first limit platform 13 is larger than the inner diameter of the third guide hole and smaller than the inner diameter of the second guide hole 8; the outer diameter of the second limit platform 14 is larger than the inner diameter of the fourth guide hole and smaller than the inner diameter of the first guide hole 7, so as to prevent the first buffer plate or the second buffer plate from falling out.

[0025] In one embodiment, the first buffer spring 11 is sleeved on the first guide rod 9, one end of the first buffer spring 11 is connected to the first buffer plate 5, and the other end of the first buffer spring 11 is connected to the first limit platform 13; the second buffer spring 12 is sleeved on the second guide rod 10, one end of the second buffer spring 12 is connected to the second buffer plate 6, and the other end of the second buffer spring 12 is connected to the second limit platform 14. The first buffer spring / second buffer spring may also not be sleeved on the first guide rod / second guide rod, and simply connect the buffer plate and the mounting plate.

[0026] In one embodiment, the travel switch is mounted on the first buffer plate 5 so as to be touched by the contact block, and the contact block is mounted on the second buffer plate 6. It should be noted that the contact block can be a convex block arranged on the second buffer plate, or the second buffer plate can be directly used as the contact block, which can abut against the travel switch. As long as the electric hoist moves to this position, the travel switch is touched, and the driving motor of the electric hoist travel wheel is stopped.

[0027] The above embodiments can be combined with each other.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A crane electric hoist anti-collision device, characterized in that: It includes a first buffer mechanism installed on the electric hoist and a second buffer mechanism installed on the lower side of the main beam; the first buffer mechanism is provided with a first guide rod, the second buffer mechanism is provided with a second guide rod, the first buffer mechanism is provided with a first guide hole corresponding to the second guide rod, and the second buffer mechanism is provided with a second guide hole corresponding to the first guide rod; the first buffer mechanism is provided with a travel switch, and the second buffer mechanism is provided with a contact block corresponding to the travel switch.

2. The anti-collision device for electric hoist of a crane according to claim 1 is characterized in that: The first buffer mechanism includes a first mounting plate, a first buffer plate and a first buffer spring connecting the first mounting plate and the first buffer plate. A plurality of first mounting holes, first guide holes and third guide holes are evenly provided on the first mounting plate. One end of the first guide rod is fixedly connected to the first mounting plate, and the other end of the first guide rod is arranged through the third guide hole.

3. The anti-collision device for electric hoist of a crane according to claim 2 is characterized in that: The second buffer mechanism includes a second mounting plate, a second buffer plate and a second buffer spring located between the second mounting plate and the second buffer plate. A plurality of second mounting holes, second guide holes and fourth guide holes are evenly opened on the second mounting plate. One end of the second guide rod is fixedly connected to the second mounting plate, and the other end of the second guide rod is arranged through the fourth guide hole.

4. The anti-collision device for electric hoist of a crane according to claim 3 is characterized in that: A first limit platform is provided at both ends of the first guide rod, and a second limit platform is provided at both ends of the second guide rod. The outer diameter of the first limit platform is larger than the inner diameter of the third guide hole and smaller than the inner diameter of the second guide hole; the outer diameter of the second limit platform is larger than the inner diameter of the fourth guide hole and smaller than the inner diameter of the first guide hole.

5. The anti-collision device for electric hoist of a crane according to claim 4 is characterized in that: The first buffer spring is sleeved on the first guide rod, one end of the first buffer spring is connected to the first buffer plate, and the other end of the first buffer spring is connected to the first limit platform; the second buffer spring is sleeved on the second guide rod, one end of the second buffer spring is connected to the second buffer plate, and the other end of the second buffer spring is connected to the second limit platform.

6. The anti-collision device for electric hoist of a crane according to claim 5, characterized in that: The travel switch is installed on the first buffer plate, and the contact block is installed on the second buffer plate.

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