A hoist structure of an electric crane

Abstract

The utility model discloses a kind of lifting appliance structures of electric hoist, including steel beam, running car is walked on the steel beam, the running car includes frame, brake mechanism is arranged in the frame, the side portion of brake mechanism is provided with auxiliary mechanism;The brake mechanism includes electric hydraulic rod, the bottom outer wall of electric hydraulic rod is fixed with frame, the piston rod of electric hydraulic rod is located in frame, the piston rod top of electric hydraulic rod is fixedly connected with brake disc, the lifting appliance structure of this electric hoist, by the piston rod movement of electric hydraulic rod can make brake disc move, brake disc moves to the bottom of steel beam can be with the bottom friction of steel beam, can brake operation to running car, heat dissipation port can increase the air exchange rate inside and outside brake disc, can reduce the thermal failure of brake disc, can increase the use stability of running car, thus, brake can be carried out to running car, realize the effect of reducing security risk.

Description

Technical Field

[0001] This utility model relates to the field of lifting device structure technology, specifically a lifting device structure for an electric crane. Background Technology

[0002] Distribution boxes contain a vast amount of data parameters and are generally low-voltage electrical wiring systems. They require the assembly of switching equipment, measuring instruments, protective electrical devices, and auxiliary equipment in enclosed or semi-enclosed metal cabinets or panels to form a low-voltage distribution box. During normal operation, circuits can be connected or disconnected manually or automatically. Distribution boxes are characterized by their small size, easy installation, special technical performance, fixed location, unique configuration functions, lack of site restrictions, and wide application. Distribution boxes mainly connect a large number of switching devices and measuring instruments through various cables, thus requiring a lifting structure for an electric crane.

[0003] In some existing electric cranes, the lifting mechanism often relies on the weight of the workpiece itself to brake the crane when lifting a workpiece. However, if the crane moves during the lifting process, the workpiece may fall on the worker, posing a safety hazard.

[0004] Therefore, this utility model provides a lifting device structure for an electric crane. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a lifting device structure for an electric crane to solve the above problems.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a lifting device structure for an electric crane, including a steel beam, on which a traveling vehicle travels, the traveling vehicle including a frame, a braking mechanism being provided inside the frame, and an auxiliary mechanism being provided on the side of the braking mechanism;

[0007] The braking mechanism includes an electro-hydraulic rod, which is fixed to the bottom outer wall of the vehicle frame. The piston rod of the electro-hydraulic rod is located inside the vehicle frame. A brake disc is fixedly connected to the top of the piston rod of the electro-hydraulic rod. The brake disc is in contact with the bottom of the steel beam and has a cavity inside.

[0008] As a preferred embodiment of this utility model, the top outer wall of the brake disc is provided with a plurality of evenly distributed heat dissipation vents, which penetrate the brake disc.

[0009] As a preferred embodiment of this utility model, the auxiliary mechanism includes two connecting plates that are symmetrical about the steel beam. An auxiliary disk is fixedly connected to the side of the connecting plate near the steel beam, and the auxiliary disk is in contact with the side of the steel beam.

[0010] As a preferred embodiment of this utility model, the bottom of the connecting plate is fixedly connected to a mounting shaft, and the ends of the two mounting shafts are rotatably connected to a mounting plate via bearings. The mounting plate is fixed to the inner wall of the frame.

[0011] As a preferred embodiment of this utility model, force-applying plates are fixedly connected to both outer walls of the brake disc, and a force-bearing plate is fixedly connected to the bottom of the mounting shaft. The force-applying plate is located on the side of the force-bearing plate, and the force-bearing plate and the connecting plate form a V-shaped structure.

[0012] As a preferred embodiment of this utility model, the force-applying plate has a rotating groove on the side near the force-receiving plate, and the inner wall of the rotating groove is rotatably connected to a rotating ball through a bearing, and the rotating ball forms a rolling fit with the force-receiving plate.

[0013] As a preferred embodiment of this utility model, a torsion spring is fixedly connected to the surface of the mounting shaft, and the torsion spring is fixed to the mounting plate. Beneficial effects

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] (1) The lifting device structure of the electric crane can move the brake disc by moving the piston rod of the electric hydraulic rod. When the brake disc moves to the bottom of the steel beam, it can rub against the bottom of the steel beam, which can brake the vehicle. The heat dissipation port can increase the air exchange rate inside and outside the brake disc, reduce the thermal failure of the brake disc, and increase the stability of the vehicle. Therefore, the vehicle can be braked, thus reducing safety hazards.

[0016] (2) The lifting device structure of the electric crane can apply force to the load plate by moving the force plate. At this time, the rotation of the mounting shaft can make the connecting plate rotate, which can make the auxiliary disc contact the side of the steel beam, increase the contact area between the brake disc and the steel beam, and improve the braking effect of the vehicle. After braking, as the piston rod of the electric hydraulic rod returns to its original position, the elastic force of the torsion spring can make the mounting shaft return to its original position, which can make the auxiliary disc return to its original position. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a front sectional view of the structure of this utility model;

[0019] Figure 3 This is a partial cross-sectional structural schematic diagram of the present invention;

[0020] Figure 4 This is a partial structural schematic diagram of the present invention.

[0021] In the diagram: 1. Steel beam; 2. Running vehicle; 3. Chassis; 4. Electro-hydraulic rod; 5. Brake disc; 6. Cavity; 7. Heat dissipation vent; 8. Connecting plate; 9. Auxiliary disc; 10. Mounting plate; 11. Mounting shaft; 12. Torsion spring; 13. Force-applying plate; 14. Force-bearing plate; 15. Rotating groove; 16. Rotating ball. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 A lifting structure for an electric crane includes a steel beam 1, a traveling carriage 2 traveling on the steel beam 1, the traveling carriage 2 including a frame 3, a braking mechanism being installed inside the frame 3, and an auxiliary mechanism being installed on the side of the braking mechanism.

[0024] The braking mechanism includes an electro-hydraulic rod 4, which is fixed to the bottom outer wall of the frame 3. The piston rod of the electro-hydraulic rod 4 is located inside the frame 3. A brake disc 5 is fixedly connected to the top of the piston rod of the electro-hydraulic rod 4. The brake disc 5 is in contact with the bottom of the steel beam 1. A cavity 6 is opened inside the brake disc 5.

[0025] As a further improvement of this utility model, the top outer wall of the brake disc 5 is provided with several evenly distributed heat dissipation holes 7, which penetrate the brake disc 5.

[0026] Specifically, the heat dissipation vent 7 can increase the air exchange rate inside and outside the brake disc 5, which can reduce the thermal failure of the brake disc 5 and increase the operational stability of the vehicle 2.

[0027] As a further improvement of this utility model, the auxiliary mechanism includes two connecting plates 8 that are symmetrical about the steel beam 1. An auxiliary disk 9 is fixedly connected to the side of the connecting plate 8 near the steel beam 1, and the auxiliary disk 9 is in contact with the side of the steel beam 1.

[0028] Specifically, by rotating the connecting plate 8, the auxiliary disc 9 can come into contact with the side of the steel beam 1, which can increase the contact area between the brake disc 5 and the steel beam 1 and improve the braking effect of the vehicle 2.

[0029] As a further improvement of this utility model, the bottom of the connecting plate 8 is fixedly connected to the mounting shaft 11, and the ends of the two mounting shafts 11 are rotatably connected to the mounting plate 10 through bearings. The mounting plate 10 is fixed to the inner wall of the frame 3. The outer walls on both sides of the brake disc 5 are fixedly connected to the force-applying plate 13, and the bottom of the mounting shaft 11 is fixedly connected to the force-receiving plate 14. The force-applying plate 13 is located on the side of the force-receiving plate 14, and the force-receiving plate 14 and the connecting plate 8 form a V-shaped structure.

[0030] Specifically, the force-applying plate 13 can apply force to the force-receiving plate 14 by moving. The force-receiving plate 14 rotates in conjunction with the mounting shaft 11. The rotation of the mounting shaft 11 causes the connecting plate 8 to rotate. The rotation of the connecting plate 8 allows the auxiliary disc 9 to contact the side of the steel beam 1, which increases the contact area between the brake disc 5 and the steel beam 1 and improves the braking effect of the vehicle 2.

[0031] As a further improvement of this utility model, a rotating groove 15 is provided on the side of the force-applying plate 13 near the force-receiving plate 14. The inner wall of the rotating groove 15 is rotatably connected to a rotating ball 16 through a bearing, and the rotating ball 16 forms a rolling fit with the force-receiving plate 14.

[0032] Specifically, by rotating the ball 16 within the inner wall of the rotating groove 15, the sliding friction between the force-applying plate 13 and the force-receiving plate 14 can be reduced, thereby improving the protection of the equipment. As the ball 16 rotates, the force-receiving plate 14 can rotate in conjunction with the mounting shaft 11.

[0033] As a further improvement of this utility model, a torsion spring 12 is fixedly connected to the surface of the mounting shaft 11, and the torsion spring 12 is fixed to the mounting plate 10.

[0034] Specifically, the spring force of the torsion spring 12 can reset the mounting shaft 11 and the auxiliary disk 9.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0036] The working principle of this utility model is as follows: When the vehicle 2 needs to be stopped, the controller activates the electric hydraulic rod 4. The piston rod of the electric hydraulic rod 4 moves, which causes the brake disc 5 to move. The brake disc 5 moves to the bottom of the steel beam 1 and can rub against the bottom of the steel beam 1, thus braking the vehicle 2. The heat dissipation vent 7 can increase the air exchange rate inside and outside the brake disc 5, which can reduce the thermal failure of the brake disc 5 and increase the stability of the vehicle 2. Therefore, the vehicle 2 can be braked, thus reducing safety hazards.

[0037] As the brake disc 5 moves, the force-applying plate 13 moves, applying force to the force-receiving plate 14. At this time, the rotating ball 16 rotates in the inner wall of the rotating groove 15, reducing the sliding friction between the force-applying plate 13 and the force-receiving plate 14, thus improving equipment protection. As the rotating ball 16 rotates, the force-receiving plate 14 rotates in conjunction with the mounting shaft 11. The rotation of the mounting shaft 11 causes the connecting plate 8 to rotate, which in turn causes the auxiliary disc 9 to contact the side of the steel beam 1, increasing the contact area between the brake disc 5 and the steel beam 1 and improving the braking effect of the vehicle 2. After braking, as the piston rod of the electro-hydraulic rod 4 resets, the spring force of the torsion spring 12 resets the mounting shaft 11, which in turn resets the auxiliary disc 9.

[0038] 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.

[0039] 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 device structure for an electric crane, comprising a steel beam (1), on which a traveling carriage (2) travels, characterized in that: The vehicle (2) includes a frame (3), a braking mechanism is provided inside the frame (3), and an auxiliary mechanism is provided on the side of the braking mechanism; The braking mechanism includes an electric hydraulic rod (4), which is fixed to the bottom outer wall of the frame (3). The piston rod of the electric hydraulic rod (4) is located inside the frame (3). A brake disc (5) is fixedly connected to the top of the piston rod of the electric hydraulic rod (4). The brake disc (5) is in contact with the bottom of the steel beam (1). A cavity (6) is opened inside the brake disc (5).

2. The lifting device structure of an electric crane according to claim 1, characterized in that: The top outer wall of the brake disc (5) is provided with several evenly distributed heat dissipation holes (7), which penetrate the brake disc (5).

3. The lifting device structure of an electric crane according to claim 1, characterized in that: The auxiliary mechanism includes two connecting plates (8) that are symmetrical about the steel beam (1). An auxiliary disk (9) is fixedly connected to the side of the connecting plate (8) near the steel beam (1). The auxiliary disk (9) is in contact with the side of the steel beam (1).

4. The lifting device structure of an electric crane according to claim 3, characterized in that: The bottom of the connecting plate (8) is fixedly connected to the mounting shaft (11), and the ends of the two mounting shafts (11) are rotatably connected to the mounting plate (10) through bearings. The mounting plate (10) is fixed to the inner wall of the frame (3).

5. The lifting device structure of an electric crane according to claim 4, characterized in that: The brake disc (5) has force-applying plates (13) fixedly connected to both outer walls, and the mounting shaft (11) has a force-receiving plate (14) fixedly connected to the bottom. The force-applying plate (13) is located on the side of the force-receiving plate (14), and the force-receiving plate (14) and the connecting plate (8) form a V-shaped structure.

6. The lifting device structure of an electric crane according to claim 5, characterized in that: The force-applying plate (13) has a rotating groove (15) on the side near the force-receiving plate (14). The inner wall of the rotating groove (15) is rotatably connected to a rotating ball (16) via a bearing. The rotating ball (16) and the force-receiving plate (14) form a rolling fit.

7. The lifting device structure of an electric crane according to claim 6, characterized in that: A torsion spring (12) is fixedly connected to the surface of the mounting shaft (11), and the torsion spring (12) is fixed to the mounting plate (10).

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