Hook limiting device for European-style electric hoist

Abstract

The utility model discloses a European-style electric hoist hook limiting device which comprises a supporting mechanism, a U-shaped plate, a lifting hook, a connecting mechanism, an elastic limiting mechanism, a toothed plate, a transmission mechanism, a laser sensor and a controller. The elastic limiting mechanism is fixed in the supporting mechanism; the connecting mechanism is slidably connected with the U-shaped plate, one end of the connecting mechanism is fixedly connected with the elastic limiting mechanism, and the other end of the elastic limiting mechanism is fixedly connected with the lifting hook; the toothed plate is fixed on the connecting mechanism; the transmission mechanism is rotationally connected into the supporting mechanism, and the transmission mechanism is meshed with the toothed plate; the laser sensor is arranged on the transmission mechanism; the controller is arranged on the supporting mechanism and connected with the laser sensor and the electric hoist. Therefore, safety accidents caused by the fact that the hook ascends or descends too high or too low can be effectively prevented, and the safety of the electric hoist and external equipment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hooks, in particular to a European-style electric hoist hook limiting device. Background Art

[0002] European electric hoists, as indispensable lifting equipment in industrial production and construction, are used to accurately lift goods using hooks, achieving efficient and convenient handling and transfer.

[0003] However, the control of the lifting height of the hook is particularly critical. Once the hook is raised to a too high position, the hoisted object may collide with the top structure of the electric hoist, causing damage to the equipment; and if the hook is lowered to a too low position, the hook may also collide with the ground or other equipment, causing unnecessary losses. At present, although it is generally relied on manual monitoring of the hook height and control of the start and stop of the electric hoist, human factors are often difficult to avoid negligence. Once the monitoring error occurs, it may cause the hook to collide, thereby causing damage to the electric hoist or other equipment. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, one purpose of the utility model is to provide a European-style electric hoist hook limit device, which can effectively prevent safety accidents caused by the hook being raised or lowered too high or too low, thereby ensuring the safety of the electric hoist and external equipment.

[0006] To achieve the above-mentioned purpose, the utility model proposes a European electric hoist hook limiting device, comprising a supporting mechanism, a U-shaped plate, a hook, a connecting mechanism, an elastic limiting mechanism, a tooth plate, a transmission mechanism, a laser sensor and a controller, wherein the U-shaped plate is fixed on the supporting mechanism; the elastic limiting mechanism is fixed in the supporting mechanism; the connecting mechanism is slidably connected to the U-shaped plate, and one end of the connecting mechanism is fixedly connected to the elastic limiting mechanism, and the other end of the elastic limiting mechanism is fixedly connected to the hook; the tooth plate is fixed on the connecting mechanism; the transmission mechanism is rotatably connected in the supporting mechanism, and the transmission mechanism is meshed with the tooth plate; the laser sensor is arranged on the transmission mechanism; the controller is arranged on the supporting mechanism, and the controller is respectively connected to the laser sensor and the electric hoist.

[0007] The European-style electric hoist hook limiting device of the utility model can effectively prevent safety accidents caused by the hook being raised or lowered too high or too low, thereby ensuring the safety of the electric hoist and external equipment.

[0008] In addition, the European-style electric hoist hook limit device proposed in the application may also have the following additional technical features:

[0009] Specifically, the supporting mechanism includes two supporting plates, a plurality of bolts, two screw rods and a hanging wheel, wherein the two supporting plates are fixedly connected to the U-shaped plates respectively; the two screw rods are detachably connected to the two supporting plates through the bolts respectively; and the hanging wheel is fixed and rotatably connected between the two supporting plates.

[0010] Specifically, the connecting mechanism includes a rod body, a limit plate and an L-shaped plate, wherein the rod body is slidably connected to a first through hole opened on the lower surface of the U-shaped plate; the limit plate is fixed on the outer wall of the rod body, one end of the rod body is fixedly connected to the L-shaped plate, and the other end of the rod body is fixedly connected to the hook; the tooth plate is fixed on the L-shaped plate.

[0011] Specifically, the elastic limiting mechanism includes a fixing plate and a spring, wherein the fixing plate is fixed between the two supporting plates; and the spring is fixed between the fixing plate and the L-shaped plate.

[0012] Specifically, the transmission mechanism includes a rotating rod and a gear, wherein the rotating rod is rotatably connected between the two support plates; the gear and the laser sensor are respectively fixed on the outer wall of the rotating rod, and the gear is meshingly connected with the toothed plate.

[0013] Specifically, the present application also includes two limit rods, which are respectively fixed on the U-shaped plate, and the limit rods are respectively slidably connected to the corresponding second through holes opened on the limit plate.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0016] Figure 1 This is a schematic structural diagram of a European-style electric hoist hook limiting device according to an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a support mechanism according to an embodiment of the utility model;

[0018] Figure 3 The left side structural schematic diagram of the European electric hoist hook limiting device according to one embodiment of the utility model.

[0019] As shown in the figure: 1. Support mechanism; 2. U-shaped plate; 3. Hook; 4. Connecting mechanism; 5. Elastic limiting mechanism; 6. Tooth plate; 7. Transmission mechanism; 8. Laser sensor; 9. Controller; 10. Support plate; 11. Bolt; 12. Screw; 13. Hanging wheel; 40. Rod body; 41. Limiting plate; 42. L-shaped plate; 43. Limiting rod; 50. Fixed plate; 51. Spring; 70. Rotating rod; 71. Gear. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. On the contrary, the embodiments of the present invention include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0021] The European-style electric hoist hook limiting device of the utility model embodiment is described below in conjunction with the accompanying drawings.

[0022] like Figure 1-Figure 3 As shown, the European electric hoist hook limit device of the embodiment of the utility model may include a supporting mechanism 1, a U-shaped plate 2, a hook 3, a connecting mechanism 4, an elastic limit mechanism 5, a tooth plate 6, a transmission mechanism 7, a laser sensor 8 and a controller 9.

[0023] Among them, the U-shaped plate 2 is fixed on the supporting mechanism 1, the elastic limiting mechanism 5 is fixed in the supporting mechanism 1, the connecting mechanism 4 is slidingly connected to the U-shaped plate 2, and one end of the connecting mechanism 4 is fixedly connected to the elastic limiting mechanism 5, and the other end of the elastic limiting mechanism 5 is fixedly connected to the hook 3.

[0024] The tooth plate 6 is fixed on the connecting mechanism 4, the transmission mechanism 7 is rotatably connected in the supporting mechanism 1, and the transmission mechanism 7 is meshed with the tooth plate 6, the laser sensor 8 is arranged on the transmission mechanism 7, the controller 9 is arranged on the supporting mechanism 1, and the controller 9 is respectively connected to the laser sensor 8 and the electric hoist (not shown in the figure).

[0025] It should be noted that the controller 9 described in this embodiment can be connected to an external host computer in a wired or wireless manner, so that relevant personnel can control the controller 9 through the external host computer.

[0026] Specifically, the device can be connected to the rope of the electric hoist. In the initial state, the probe of the laser sensor 8 is arranged downward, and as the rope of the electric hoist descends, the support mechanism 1 will descend synchronously. During this process, the laser sensor 8 will accurately detect the distance between the object below (such as equipment, vehicles) or the ground, and transmit the detection signal to the controller 9 in real time. After receiving the signal, the controller 9 will quickly analyze it. Once it is determined that the preset stop condition is met (which can be set according to actual conditions, such as 5 cm above the object), it will immediately send a command to the motor driver of the electric hoist to stop it. In this way, the hook 3 can be effectively prevented from colliding with the object below, thereby avoiding damage to the object.

[0027] When lifting an object, it is only necessary to hang the cable of the lifting object on the hook 3, and then start the rope of the electric hoist to rise. At this time, the hook 3 will pull the connecting mechanism 4 downward under the action of the gravity of the cargo, and then drive the toothed plate 6 to drive the transmission mechanism 7 to rotate. This series of actions will cause the laser sensor 8 to rotate 90° counterclockwise so that the probe is arranged upward. In this way, the laser sensor 8 can measure the distance between it and the electric hoist and send the detection signal to the controller 9 in real time. After receiving the signal, the controller 9 will also quickly analyze it. Once the preset stop condition is reached (for example, 10 cm below the electric hoist), a stop command will be issued to the motor driver of the electric hoist, thereby avoiding the situation where the hoisted object continues to rise and collides with the top equipment due to negligence of personnel, and can effectively prevent safety accidents caused by the hook being lifted too high or too low, thereby ensuring the safety of the electric hoist and external equipment.

[0028] In one embodiment of the present invention, Figure 1 and Figure 3 As shown, the support mechanism 1 may include two support plates 10 , a plurality of bolts 11 , two screw rods 12 and a suspension wheel 13 .

[0029] The two support plates 10 are fixedly connected to the U-shaped plate 2 , respectively; the two screw rods 12 are detachably connected to the two support plates 10 through bolts 11 , respectively; and the hanging wheel 13 is fixedly connected between the two support plates 10 for rotation.

[0030] Among them, it can be understood that the rope of the electric hoist can be wrapped around the lifting wheel 13 to facilitate the lifting of the device, and the bolts 11 and screws 12 can be used to reinforce the two support plates 10, thereby improving the stability between the two support plates 10 and further improving the bearing capacity of the support mechanism 1.

[0031] In one embodiment of the present invention, Figure 2 As shown, the connection mechanism 4 may include a rod body 40 , a limiting plate 41 and an L-shaped plate 42 .

[0032] Among them, the rod body 40 is slidably connected to the first through hole (not marked in the figure) opened on the lower surface of the U-shaped plate 2, a limiting plate 41 is fixed on the outer wall of the rod body 40, one end of the rod body 40 is fixedly connected to the L-shaped plate 42, the other end of the rod body 40 is fixedly connected to the hook 3, and the tooth plate 6 is fixed on the L-shaped plate 42.

[0033] Specifically, when the hook 3 moves downward, the limit plate 41 and the L-shaped plate 42 will be driven downward through the rod body 40. If the limit plate 41 is lowered to fit with the bottom wall of the U-shaped plate 2, the L-shaped plate 42 can drive the tooth plate 6 to drive the laser sensor 8 to rotate 90° through the transmission mechanism 7.

[0034] In one embodiment of the present invention, Figure 2 As shown, the elastic limiting mechanism 5 may include a fixing plate 50 and a spring 51 .

[0035] The fixing plate 50 is fixed between the two supporting plates 10 , and the spring 51 is fixed between the fixing plate 50 and the L-shaped plate 42 .

[0036] It is understandable that when the suspended object completes the lifting task, the hook 3 will no longer be constrained by gravity. At this time, the spring 51 will exert its elastic force to lift the hook 3 to the initial position through the connecting mechanism 4. At the same time, this action will also drive the laser sensor 8 to return to the initial angle, so that it will be arranged downward again, ready for the next operation of lifting the object, thereby improving the operating efficiency.

[0037] In one embodiment of the present invention, Figure 2 As shown, the transmission mechanism 7 may include a rotating rod 70 and a gear 71 .

[0038] The rotating rod 70 is rotatably connected between the two support plates 10 , the gear 71 and the laser sensor 8 are respectively fixed on the outer wall of the rotating rod 70 , and the gear 71 is meshedly connected with the toothed plate 6 .

[0039] Specifically, when the toothed plate 6 moves, the gear 71 can be driven to drive the laser sensor 8 to rotate, thereby adjusting the distance measurement direction of the laser sensor 8 .

[0040] Furthermore, if Figure 2 and Figure 3 As shown, the above-mentioned European electric hoist hook limit device can also include two limit rods 43, the two limit rods 43 are respectively fixed on the U-shaped plate 2, and the limit rods 43 are respectively slidably connected with the second through holes correspondingly opened on the limit plate 41.

[0041] It can be understood that the setting of the limiting rod 43 can not only limit the limiting plate 41 and improve the stability of the rod body 40 when moving up and down, but also ensure that the tooth plate 6 and the gear 71 can be always engaged.

[0042] In summary, the European-style electric hoist hook limit device of the embodiment of the utility model can effectively prevent safety accidents caused by the hook being raised or lowered too high or too low, thereby ensuring the safety of the electric hoist and external equipment.

[0043] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A European-style electric hoist hook limit device, characterized in that: It includes a supporting mechanism, a U-shaped plate, a hook, a connecting mechanism, an elastic limiting mechanism, a tooth plate, a transmission mechanism, a laser sensor and a controller, wherein: The U-shaped plate is fixed on the supporting mechanism; The elastic limiting mechanism is fixed in the supporting mechanism; The connecting mechanism is slidably connected to the U-shaped plate, one end of the connecting mechanism is fixedly connected to the elastic limiting mechanism, and the other end of the elastic limiting mechanism is fixedly connected to the hook; The tooth plate is fixed on the connecting mechanism; The transmission mechanism is rotatably connected to the support mechanism, and the transmission mechanism is meshed with the toothed plate; The laser sensor is arranged on the transmission mechanism; The controller is arranged on the supporting mechanism, and is connected to the laser sensor and the electric hoist respectively.

2. The European electric hoist hook limiting device according to claim 1 is characterized in that: The support mechanism includes two support plates, a plurality of bolts, two screw rods and a hanging wheel, wherein: The two support plates are respectively fixedly connected to the U-shaped plate; The two screw rods are detachably connected to the two support plates through the bolts respectively; The hanging wheel is fixed and rotatably connected between the two support plates.

3. The European electric hoist hook limiting device according to claim 2 is characterized in that: The connecting mechanism includes a rod body, a limiting plate and an L-shaped plate, wherein: The rod body is slidably connected to a first through hole opened on the lower surface of the U-shaped plate; The limiting plate is fixed on the outer wall of the rod body, one end of the rod body is fixedly connected to the L-shaped plate, and the other end of the rod body is fixedly connected to the hook; The tooth plate is fixed on the L-shaped plate.

4. The European-style electric hoist hook limiting device according to claim 3 is characterized in that: The elastic limiting mechanism includes a fixing plate and a spring, wherein: The fixing plate is fixed between the two supporting plates; The spring is fixed between the fixing plate and the L-shaped plate.

5. The European electric hoist hook limiting device according to claim 2 is characterized in that: The transmission mechanism includes a rotating rod and a gear, wherein: The rotating rod is rotatably connected between the two supporting plates; The gear and the laser sensor are respectively fixed on the outer wall of the rotating rod, and the gear is meshingly connected with the toothed plate.

6. The European electric hoist hook limiting device according to claim 3 is characterized in that: It also includes two limiting rods, which are respectively fixed on the U-shaped plate, and the limiting rods are respectively slidably connected to the corresponding second through holes on the limiting plate.

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