Electric hoist hoisting buffer device

Abstract

The utility model relates to the technical field of electric hoist devices, and particularly discloses an electric hoist hoisting buffer device which is characterized in that a fixed seat is fixed in the middle of the bottom of an electric hoist main body; the buffer beam is arranged below the fixed seat in parallel and is positioned right above the lifting hook of the electric hoist; the top ends of the top plates are hinged to the two ends of the fixing base respectively, the bottom ends of the top plates are rotationally sleeved with the shaft rods, the top ends of the bottom plates are rotationally sleeved with the shaft rods, and the bottom ends of the bottom plates are hinged to the two ends of the buffer beam respectively. The two ends of the tension spring are connected to the ends of the shaft rod correspondingly, and the tension spring extends in the horizontal direction. And the problem that equipment is damaged due to ejection when the lifting hook of the electric hoist is lifted is well avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of electric hoist devices, specifically to an electric hoist lifting buffer device. Background Technology

[0002] Electric hoists are a type of special lifting equipment installed on overhead cranes and gantry cranes. They are characterized by their small size, light weight, simple operation, and ease of use, and are widely used in industrial and mining enterprises, warehouses, docks, and other places.

[0003] In existing technologies, the lifting process of wire rope electric hoists is generally controlled by operators via remote control. However, improper operation can easily lead to the hook being raised too high and hitting the top, causing damage to the electric hoist itself. Utility Model Content

[0004] The purpose of this utility model is to provide a lifting buffer device for electric hoists, which solves the problem of electric hoists damaging the equipment when the hook is raised.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric hoist lifting buffer device, wherein the fixed base is fixed at the middle position of the bottom of the electric hoist body; the buffer beam is arranged parallel to the bottom of the fixed base and located directly above the electric hoist hook; the hinge plate includes a top plate with its top end respectively hinged to both ends of the fixed base, a shaft rotatably sleeved to the bottom end of the top plate, and a bottom plate with its top end rotatably sleeved to the shaft and its bottom end respectively hinged to both ends of the buffer beam; the two ends of the tension spring are respectively connected to the ends of the shaft, and the tension spring extends in the horizontal direction.

[0006] Preferably, the fixing seat includes an upper plate strip, slots fixed to both ends of the top surface of the upper plate strip and respectively engaging with the two sides of the bottom center of the electric hoist frame, and upper ear seats fixed to both ends of the bottom surface of the upper plate strip and respectively hinged to the top of the top plate. The side wall of the slot is provided with through holes for inserting fixing bolts.

[0007] Preferably, the buffer beam includes a lower strip and lower lugs fixed to both ends of the top surface of the lower strip and respectively hinged to the bottom end of the bottom plate.

[0008] Preferably, a rubber sheet is attached to the bottom surface of the lower strip, and a plurality of connecting bolts are fitted on the lower strip, the bottom ends of which are threaded and matched with the rubber sheet.

[0009] Preferably, the two ends of the tension spring are respectively fixedly connected to end seats, and the outer end face of the end seats is respectively fixed with a pull ring that matches the end of the shaft.

[0010] Preferably, a limiting ring is fitted onto the end of the shaft located outside the pull ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model relates to an electric hoist lifting buffer device that can prevent the hook from hitting the top and damaging the equipment; moreover, the lifting buffer device has a simple overall structure, low manufacturing cost, and is easy to promote and apply widely. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of the fixing base of this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the buffer beam of this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the hinge plate of this utility model;

[0017] Figure 5 This is a three-dimensional structural diagram of the tension spring of this utility model;

[0018] Figure 6 This is a schematic diagram of the assembly of the lifting buffer device and the electric hoist of this utility model.

[0019] In the diagram: 1-Fixing base; 1.1-Upper strip; 1.2-Slot; 1.2.1-Through hole; 1.3-Upper ear seat;

[0020] 2-Buffer beam; 2.1-Lower strip; 2.2-Lower lug; 2.3-Rubber sheet; 2.4-Connecting bolt;

[0021] 3-Hinge plate; 3.1-Top plate; 3.2-Shaft; 3.3-Bottom plate; 3.4-Limiting ring;

[0022] 4-Tension spring; 4.1-End seat; 4.2-Pull ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6This utility model provides a technical solution: a lifting buffer device for an electric hoist, wherein a fixing base 1 is fixed to the middle position of the bottom of the electric hoist body; wherein, the fixing base 1 includes an upper strip 1.1, a slot 1.2 fixed to both ends of the top surface of the upper strip 1.1 and respectively engaging with the two sides of the bottom center of the electric hoist frame, and an upper ear seat 1.3 fixed to both ends of the bottom surface of the upper strip 1.1. The side wall of the slot 1.2 is provided with through holes 1.2.1 for inserting fixing bolts. That is, when installing the lifting buffer device, first, the slot 1.2 is engaged with the plate structure on both sides of the bottom of the electric hoist frame, the through holes 1.2.1 are aligned with the holes on the plate, and bolts are used to connect them.

[0025] The buffer beam 2 is arranged parallel to the bottom of the fixed base 1 and directly above the hook of the electric hoist. The buffer beam 2 includes a lower strip 2.1 and lower lugs 2.2 fixed to both ends of the top surface of the lower strip 2.1.

[0026] The hinge plate 3 includes a top plate 3.1 with its top end hinged to the upper ear seats 1.3 at both ends of the fixed seat 1, a shaft 3.2 rotatably sleeved at the bottom end of the top plate 3.1, and a bottom plate 3.3 with its top end rotatably sleeved to the shaft 3.2 and its bottom end hinged to the lower ear seats 2.2 at both ends of the buffer beam 2.

[0027] The two ends of the tension spring 4 are respectively connected to the ends of the shaft 3.2, and the tension spring 4 extends in the horizontal direction. The two ends of the tension spring 4 are respectively fixedly connected to the end seats 4.1, and the outer end face of the end seats 4.1 is respectively fixed with the pull rings 4.2 that are matched to the ends of the shaft 3.2.

[0028] In summary, after equipping the electric hoist with a lifting buffer device at the bottom, the lifting buffer device is located directly above the hook, and the wire rope connecting the hook is located on the front and rear sides of the lifting buffer device. The hinge plates 3 on both sides are in the shape of "<>". When the hook rises too high, it will abut against the bottom surface of the lower plate 2.1, thereby further reducing the included angle of the hinge plates 3 on both sides and further stretching the tension spring 4. This is to avoid the hook directly impacting the electric hoist and prevent the electric hoist from being damaged by the impact.

[0029] A distance sensor can be installed on the bottom surface of the upper slat 1.1, and an audible and visual alarm can be installed on the top surface of the upper slat 1.1. When the distance sensor detects that the distance between the lower slat 2.1 and the upper slat 1.1 reaches the threshold, the audible and visual alarm will be activated to issue an alarm signal in a timely manner to remind the operator to take emergency measures.

[0030] To prevent a hard impact between the hook and the bottom surface of the lower strip 2.1, a rubber plate 2.3 is attached to the bottom surface of the lower strip 2.1. Multiple connecting bolts 2.4 are fitted onto the lower strip 2.1, with their bottom ends threaded into the rubber plate 2.3. The rubber plate 2.3 has a certain degree of flexibility, providing protection for the hook.

[0031] To prevent the pull rings 4.2 at both ends of the tension spring 4 from falling off the end of the shaft 3.2, a limit ring 3.4 is fitted on the end of the shaft 3.2 located outside the pull rings 4.2.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting buffer device for an electric hoist, characterized in that, include: Fixed base (1), the fixed base (1) is fixed at the middle position of the bottom of the electric hoist body; The buffer beam (2) is arranged parallel to the bottom of the fixed seat (1) and directly above the electric hoist hook; The hinge plate (3) includes a top plate (3.1) with its top end hinged to both ends of the fixed seat (1), a shaft (3.2) rotatably sleeved on the bottom end of the top plate (3.1), and a bottom plate (3.3) with its top end rotatably sleeved on the shaft (3.2) and its bottom end hinged to both ends of the buffer beam (2). A tension spring (4) is provided, with its two ends connected to the ends of the shaft (3.2) and extending horizontally.

2. The electric hoist lifting buffer device according to claim 1, characterized in that: The fixing seat (1) includes an upper plate (1.1), a slot (1.2) fixed to both ends of the top surface of the upper plate (1.1) and respectively engaging with the two sides of the bottom center of the electric hoist frame, and an upper ear seat (1.3) fixed to both ends of the bottom surface of the upper plate (1.1) and respectively hinged to the top of the top plate (3.1). The side wall of the slot (1.2) is provided with a through hole (1.2.1) for inserting fixing bolts.

3. The electric hoist lifting buffer device according to claim 1, characterized in that: The buffer beam (2) includes a lower strip (2.1) and lower lugs (2.2) fixed to both ends of the top surface of the lower strip (2.1) and respectively hinged to the bottom end of the bottom plate (3.3).

4. The electric hoist lifting buffer device according to claim 3, characterized in that: The bottom surface of the lower strip (2.1) is fitted with a rubber plate (2.3), and a plurality of connecting bolts (2.4) are fitted on the lower strip (2.1) with their bottom ends threadedly connected to the rubber plate (2.3).

5. The electric hoist lifting buffer device according to claim 1, characterized in that: The tension spring (4) has end seats (4.1) fixedly connected to both ends, and pull rings (4.2) that are sleeved and matched with the ends of the shaft (3.2) are fixed on the outer end faces of the end seats (4.1).

6. The electric hoist lifting buffer device according to claim 5, characterized in that: The end of the shaft (3.2) located outside the pull ring (4.2) is fitted with a limiting ring (3.4).

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