Portal crane lifting structure capable of reducing start-stop impact load

Abstract

The utility model belongs to the technical field of portal cranes, in particular to a portal crane lifting structure capable of reducing start-stop impact load, which comprises a portal crane main body and an electric hoist, the electric hoist is mounted on the lower side of the portal crane main body, support plates are respectively fixed on two sides of the electric hoist, and the upper sides of the support plates are fixed with the lower ends of support pipes. According to the portal crane lifting structure capable of reducing the start-stop impact load, the roller frame is limited at the upper end of the sliding rod, a portal crane uses a soft starter, such as a frequency converter, to control the motor to start and stop the movement of the electric hoist, and the impact force at the starting moment is reduced; the roller carrier extrudes the rack of the portal crane body, vibration energy generated when the connecting spring is stressed can be absorbed and dissipated through the installed damper, the start-stop impact load of the electric hoist can be reduced, and the lifting structure of the portal crane is not prone to causing abrasion, deformation and even damage of parts.

Description

TECHNICAL FIELD

[0001] The utility model relates to door machine technical field, concretely is a door machine hoisting structure of reducing start -stop impact load. BACKGROUND

[0002] Door machine is also door crane, it is a common hoisting equipment, and door machine is widely used in factory, warehouse and construction site etc. place, door machine can efficiently move heavy object in horizontal and vertical direction, is suitable for large -scale material handling, and through fast, accurate handling of goods, door machine can greatly improve the operation efficiency of production line, and door machine has good stability when carrying heavy object, can bear larger load.

[0003] When door machine carries goods, the lifting mechanism of door machine can convert power from motor into mechanical movement, thereby lifting goods from ground to the required height, or lowering goods to ground, as the goods carried by door machine are generally heavy, the impact force of goods start -stop can easily cause additional stress to mechanical parts, and long -term impact can easily cause parts wear, deformation or even damage, therefore, we propose a door machine hoisting structure reducing start -stop impact load. SUMMARY

[0004] The utility model discloses a door machine hoisting structure reducing start -stop impact load, to solve the problem that the goods carried by door machine are generally heavy in the background art, and the impact force of goods start -stop can easily cause additional stress to mechanical parts, and long -term impact can easily cause parts wear, deformation or even damage.

[0005] To achieve the above object, the utility model provides the following technical scheme: a door machine hoisting structure reducing start -stop impact load, including door machine body and electric hoist, the downside of door machine body is installed with electric hoist, and the both sides of electric hoist are respectively fixed with support plate, and the upside of support plate is fixed with the lower end of branch pipe, and the inner side of branch pipe is slidably connected with the lower end of sliding rod, one side of branch pipe close to sliding rod is provided with connecting spring, the upper end of connecting spring is fixed with the downside of sliding rod, and the lower end of connecting spring is fixed with the inner side of branch pipe.

[0006] Preferably, the both sides of the lower end of the sliding rod are respectively fixed with sliding blocks, and the side close to the sliding block of the branch pipe is provided with a sliding groove.

[0007] Preferably, the sliding block and the sliding groove are slidably connected, and the outer side of the sliding block is fixed with a support.

[0008] Preferably, the lower end of the support is connected with the movable end of the damper, and the fixed end of the damper is connected with the support plate.

[0009] Preferably, the upper end of the slide rod is sleeved with a docking cover, and the docking cover is fixed with the roller frame.

[0010] Preferably, the roller frame is fixed with a docking block on the side close to the slide rod, and the slide rod is provided with a docking groove on the side close to the docking block.

[0011] Preferably, the docking block is docked with the docking groove, and the outer side of the docking cover is provided with a through groove one.

[0012] Preferably, the slide rod is provided with a through groove two on the side close to the through groove one, and the inside of the through groove one and the inside of the through groove two are simultaneously penetrated by a bolt, and one end of the bolt is docked with a nut.

[0013] Preferably, the inner side of the branch pipe is matched with the lower end of the slide rod, and the slide block is matched with the slide groove.

[0014] Compared with the prior art, the beneficial effects of the door machine lifting structure for reducing start-stop impact load are that the roller frame is limited at the upper end of the slide rod, the door machine uses a soft starter, such as a frequency converter, to control the motor to start and stop the electric hoist to move, the impact force at the starting moment is reduced, when the electric hoist gradually approaches the safety stop position of the door machine main body, the roller frame is extruded with the rack of the door machine main body, the vibration energy generated by the connecting spring under stress can be absorbed and dissipated through the installed damper, the electric hoist can reduce the start-stop impact load, and the door machine lifting structure is not easy to cause component wear, deformation or even damage. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the door machine main body and the electric hoist of the utility model;

[0016] Figure 2 It is a schematic view of the utility model branch plate, branch pipe and connection structure;

[0017] Figure 3 It is a schematic view of the utility model slide rod, connecting spring and connection structure;

[0018] Figure 4 It is a three-dimensional structure schematic view of the utility model Figure 3 It is a partial enlarged structure schematic view of the utility model B place;

[0019] Figure 5 It is a partial enlarged structure schematic view of the utility model Figure 3 It is a partial enlarged structure schematic view of the utility model C place.

[0020] In the figure: 1, door machine main body; 101, electric hoist; 2, support plate; 201, branch pipe; 202, sliding rod; 203, connecting spring; 204, sliding block; 205, sliding groove; 206, support; 207, damper; 208, docking cover; 209, roller frame; 210, docking block; 211, docking groove; 212, through groove one; 213, through groove two; 214, bolt. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Please refer to Figure 1-Figure 5 The present application provides a technical solution: a door machine hoisting structure for reducing start-stop impact load, comprising a door machine main body 1 and an electric hoist 101. The lower side of the door machine main body 1 is provided with the electric hoist 101. The two sides of the electric hoist 101 are respectively fixed with support plates 2. The upper side of the support plate 2 is fixed with the lower end of a branch pipe 201. The inner side of the branch pipe 201 is slidingly connected with the lower end of a sliding rod 202. The side of the branch pipe 201 close to the sliding rod 202 is provided with a connecting spring 203. The upper end of the connecting spring 203 is fixed with the lower side of the sliding rod 202. The lower end of the connecting spring 203 is fixed with the inner side of the branch pipe 201. The two sides of the lower end of the sliding rod 202 are respectively fixed with sliding blocks 204. The side of the branch pipe 201 close to the sliding blocks 204 is provided with sliding grooves 205. The sliding blocks 204 are slidingly connected with the sliding grooves 205. The outer side of the sliding block 204 is fixed with a support 206. The lower end of the support 206 is connected with the movable end of a damper 207. The fixed end of the damper 207 is connected with the support plate 2. The upper end of the sliding rod 202 is sleeved with a docking cover 208. The docking cover 208 is fixed with a roller frame 209. The side of the roller frame 209 close to the sliding rod 202 is fixed with a docking block 210. The side of the sliding rod 202 close to the docking block 210 is provided with a docking groove 211. The docking block 210 is connected with the docking groove 211. The outer side of the docking cover 208 is provided with a through groove one 212. The side of the sliding rod 202 close to the through groove one 212 is provided with a through groove two 213. The inside of the through groove one 212 and the inside of the through groove two 213 are simultaneously penetrated by a bolt 214. One end of the bolt 214 is connected with a nut. The inner side of the branch pipe 201 is matched with the lower end of the sliding rod 202. The sliding block 204 is matched with the sliding groove 205. The inner side distance of the docking cover 208 is matched with the diameter of the upper end of the sliding rod 202. The docking block 210 is matched with the docking groove 211. The inner side distance of the through groove one 212 and the inner side distance of the through groove two 213 are matched with the diameter of the bolt 214.

[0023] In specific implementation, according to Figure 1-Figure 5 , when the door machine carries the goods, the docking cover 208 is docked with the upper end of the slide rod 202, the docking cover 208 is rotated, the docking cover 208 drives the docking block 210 to adjust the docking position, the docking block 210 can be docked with the docking groove 211, the docking block 210 is matched with the docking groove 211, the docking block 210 is not easy to shift inside the docking groove 211, the through slot one 212 can be positioned and docked with the through slot two 213, at this time, the bolt 214 is penetrated through the through slot one 212 and the through slot two 213 and is rotated and docked with the nut, so that the bolt 214 is limited inside the through slot one 212 and the through slot two 213, the roller frame 209 is limited at the upper end of the slide rod 202, so that the roller frame 209 is convenient to install or replace with the slide rod 202, the electric hoist 101 is connected with the goods through the lifting tool at this time, the door machine uses a soft starter, such as a frequency converter, to control the motor to start and stop the electric hoist 101 to move, which can smoothly increase and reduce the current and reduce the impact force at the starting moment, and when the electric hoist 101 lifts the goods on the lifting tool, the electric hoist 101 gradually approaches the lower side of the rack of the door machine body 1, when the electric hoist 101 gradually approaches the safety stop position of the door machine body 1, the lifting of the goods is stopped, at this time, the electric hoist 101 drives the roller frame 209 to extrude the rack of the door machine body 1 through the support plate 2, the support pipe 201 and other parts, at the same time, the roller frame 209 pushes the slide rod 202 to move downward along the inner side of the support pipe 201, the connecting spring 203 is contracted, at this time, the connecting spring 203 gradually buffers the impact force of the upward movement of the electric hoist 101, which can effectively absorb and disperse the impact force of the electric hoist 101, reduce the impact on the mechanical structure of the door machine body 1, and the damper 207 installed can absorb and dissipate the vibration energy generated by the connecting spring 203 when stressed, reduce the vibration frequency and attenuation speed of the connecting spring 203, thereby improving the overall stability, reducing the start-stop impact load of the electric hoist 101, and preventing the door machine lifting structure from causing component wear, deformation or even damage.

[0024] To sum up, when the door machine is transporting goods, the roller frame 209 is restricted to the upper end of the slide bar 202. At this time, the door machine uses a soft starter, such as a frequency converter to control the motor to start and stop the electric hoist 101 to move, which can smoothly increase and decrease the current and reduce the impact force at the moment of starting. When the electric hoist 101 gradually approaches the safe stop position of the door machine body 1, the electric hoist 101 drives the roller frame 209 and the frame of the door machine body 1 through the support plate 2, branch pipe 201 and other parts to be squeezed. The installed damper 207 can absorb and dissipate the vibration energy generated by the connecting spring 203 when it is under force, thereby improving the overall stability, allowing the electric hoist 101 to reduce the start-stop impact load, and making the door machine lifting structure less likely to cause component wear, deformation or even damage. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A door crane lifting structure for reducing start-stop impact load, comprising a door crane body (1) and an electric hoist (101), characterized in that: An electric hoist (101) is installed on the lower side of the door machine body (1), and support plates (2) are fixed on both sides of the electric hoist (101). The upper side of the support plate (2) is fixed to the lower end of the branch pipe (201), and the inner side of the branch pipe (201) is slidably connected to the lower end of the slide rod (202). A connecting spring (203) is provided on the side of the branch pipe (201) close to the slide rod (202), the upper end of the connecting spring (203) is fixed to the lower side of the slide rod (202), and the lower end of the connecting spring (203) is fixed to the inner side of the branch pipe (201).

2. The door crane lifting structure for reducing start-stop impact load according to claim 1, characterized in that: Slide blocks (204) are fixed on both sides of the lower end of the slide rod (202), and a sliding groove (205) is provided on one side of the branch pipe (201) close to the slide block (204).

3. The door crane lifting structure for reducing start-stop impact load according to claim 2, characterized in that: The slider (204) is slidably docked with the slide groove (205), and a bracket (206) is fixed on the outer side of the slider (204).

4. The door crane lifting structure for reducing start-stop impact load according to claim 3, characterized in that: The lower end of the bracket (206) is connected to the movable end of the damper (207), and the fixed end of the damper (207) is connected to the support plate (2).

5. The door crane lifting structure for reducing start-stop impact load according to claim 2, characterized in that: The upper end of the slide bar (202) is sleeved with a docking cover (208), and the docking cover (208) is fixed to the roller frame (209).

6. The door crane lifting structure for reducing start-stop impact load according to claim 5, characterized in that: A docking block (210) is fixed on one side of the roller frame (209) close to the slide bar (202), and a docking groove (211) is provided on one side of the slide bar (202) close to the docking block (210).

7. The door crane lifting structure for reducing start-stop impact load according to claim 6, characterized in that: The docking block (210) is connected to the docking groove (211), and a through groove (212) is provided on the outer side of the docking cover (208).

8. The door crane lifting structure for reducing start-stop impact load according to claim 7, characterized in that: A second through slot (213) is provided on one side of the slide bar (202) close to the first through slot (212), and a bolt (214) is passed through both the interior of the first through slot (212) and the interior of the second through slot (213), and one end of the bolt (214) is connected to a nut.

9. The door crane lifting structure for reducing start-stop impact load according to claim 2, characterized in that: The inner side of the branch pipe (201) matches the lower end of the slide rod (202), and the slider (204) matches the slide groove (205).

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