Electric hoist crane
The electric hoist crane addresses instability and high failure rates by using a sliding board mechanism with hydraulic dampers to evenly distribute load pressure, enhancing reliability and reducing maintenance needs.
Patent Information
- Application Number
- CN202422228530.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The existing electric hoist cranes need to add a self-locking structure when lifting heavy objects, which has a high failure rate and poor buffering effect, which affects the smooth operation and increases safety hazards.
The slide, lifting frame, hydraulic damper and screw structure are adopted to shrink and cushion the impact force through the contact end of the hydraulic damper to avoid local pressure concentration, reduce friction and collision, and cancel the additional self-locking structure.
It improves the working reliability of the equipment, extends the equipment life, reduces maintenance costs, and ensures the stability and safety of the lifting process.
Smart Images
Figure CN223102545U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cranes, in particular to an electric hoist crane. Background Technique
[0002] A crane is a mechanical device used for lifting and transporting heavy objects. Cranes play an important role in many fields such as industrial production, construction, and transportation. They greatly improve the efficiency of lifting and transporting heavy objects and promote the development of social economy. There are various types of cranes, and electric hoist cranes are relatively commonly used.
[0003] For the existing electric hoist crane, the hoisted object is lifted by regulation, the running motor is started, the motor drives the wheels on both sides of the running trolley, the running trolley moves on the lower edge of the single I-beam, and the hoisted object is transported to the designated position, and the running trolley is locked and fixed by a self-locking structure.
[0004] For this type of existing electric hoist crane, a self-locking structure needs to be added, with a high failure rate and poor buffering effect, which affects the running stability and increases unsafe factors. Therefore, we propose an electric hoist crane. Content of the Utility Model
[0005] The technical problem to be solved by the utility model is to overcome the existing defects, provide an electric hoist crane, ensure that it does not deform or break when carrying heavy objects, ensure the reliability of work, reduce the local pressure concentration, reduce the harm caused by impact force, extend the equipment life, and reduce the maintenance cost, and can effectively solve the problems in the background technique.
[0006] To achieve the above purpose, the utility model provides the following technical scheme: an electric hoist crane, including a bracket, the front and rear sides of the inner part of the upper end of the bracket are respectively provided with chutes, and a running mechanism is further included.
[0007] Running mechanism: It includes a sliding plate, a lifting frame, a hydraulic damper and a lead screw. The inner parts of the chutes are respectively slidably connected with the sliding plates. The lifting frame is arranged at the bottom between the two sliding plates. Hydraulic dampers are respectively arranged at the front and rear ends of one side of the sliding plate far from the center of the lifting frame. The lead screw is rotatably connected between the left and right inner walls of the bracket, and the middle parts of the sliding plates are respectively threadedly connected with the lead screw, ensuring that it does not deform or break when carrying heavy objects, ensuring the reliability of work, reducing the local pressure concentration, reducing unnecessary friction and collision, extending the equipment life, and reducing the maintenance cost.
[0008] Further, a single-chip microcomputer is arranged outside the bracket. The input end of the single-chip microcomputer is electrically connected to an external power supply to provide electrical connections for each electrical appliance.
[0009] Further, the running mechanism further includes a first motor. The first motor is provided at the top end of the right side surface of the bracket. The left end of the output shaft of the first motor is fixedly connected to the right end of the lead screw. The input end of the first motor is electrically connected to the output end of the single-chip microcomputer to provide running drive.
[0010] Further, there are the electric hoist, the limiting groove, the sliding rod and the hook. An electric hoist is provided at the bottom end of the lifting frame. Limiting grooves are respectively opened on the left and right inner walls of the lifting frame. A sliding rod is slidably connected inside the limiting groove. A hook is sleeved outside the sliding rod. The top end of the hook is fixedly connected to the lifting rope inside the electric hoist. The electric hoist is electrically connected to the output end of the single-chip microcomputer to prevent swinging during hoisting.
[0011] Further, rotary columns are respectively rotatably connected between the left and right inner walls at the bottom end of the bracket. Rollers are sleeved outside the rotary columns to facilitate the movement of the bracket.
[0012] Further, there are also a rotating column, a first gear and a second gear. Rotary columns are respectively rotatably connected to the rear end of the inner wall on the side close to the center of the bracket. Second gears are respectively provided at the ends of the rotary columns far from the center. First gears are respectively sleeved outside the ends of the rotary columns close to the center of the bracket. The first gears are respectively meshed with the second gears located on the front side to achieve stable movement of the bracket.
[0013] Further, a second motor is provided at the rear end of the bracket on the side close to the center. The end of the output shaft of the second motor far from the center of the bracket is fixedly connected to the end of the rotary column close to the center of the bracket. The input end of the second motor is electrically connected to the output end of the single-chip microcomputer to provide moving drive.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: This electric hoist crane has the following advantages:
[0015] The rotating shaft of the first motor drives the lead screw to rotate, driving the sliding plate to slide inside the chute to the required position. When the sliding plate slides to both ends of the bracket, the contact end of the hydraulic damper contracts. Through the internal hydraulic action, the impact force is weakened, and the buffering effect is good, preventing damage to important components. The single driving device has a low failure rate. The lead screw structure has self-locking and does not require an additional self-locking structure, reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of the present utility model;
[0017] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;
[0018] Figure 3 is a schematic front-side structural diagram of the present utility model.
[0019] In the figure: 1 bracket, 2 single-chip microcomputer, 3 chute, 4 operating mechanism, 41 slide plate, 42 lifting frame, 43 hydraulic damper, 44 lead screw, 45 motor 1, 5 electric hoist, 6 limit groove, 7 slide bar, 8 hook, 9 roller, 10 rotating column, 11 rotating post, 12 gear 1, 13 gear 2, 14 motor 2. Specific embodiments
[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0021] Please refer to Figures 1-3, this embodiment provides a technical solution: an electric hoist crane, including a bracket 1. There are sliding grooves 3 respectively opened on the front and rear sides inside the upper end of the bracket 1. It also includes a running mechanism 4. There is a single-chip microcomputer 2 outside the bracket 1. The input end of the single-chip microcomputer 2 is electrically connected to an external power supply, an electric hoist 5, a limit groove 6, a sliding rod 7 and a hook 8. The bottom end of the lifting frame 42 is provided with an electric hoist 5. The left and right inner walls of the lifting frame 42 are respectively provided with limit grooves 6. A sliding rod 7 is slidably connected inside the limit groove 6. A hook 8 is sleeved outside the sliding rod 7. The top end of the hook 8 is fixedly connected to the lifting rope inside the electric hoist 5. The electric hoist 5 is electrically connected to the output end of the single-chip microcomputer 2. Between the left and right inner walls at the bottom end of the bracket 1, a rotating column 10 is respectively rotatably connected. A roller 9 is sleeved outside the rotating column 10. It also includes a rotating column 11, a first gear 12 and a second gear 13. The rear ends of the inner walls on one side of the bracket 1 close to the center are respectively rotatably connected with a rotating column 11. The ends of the rotating column 11 far from the center are respectively provided with a second gear 13. A first gear 12 is respectively sleeved outside the ends of the rotating column 10 close to the center of the bracket 1. The first gears 12 are respectively meshed and connected with the second gears 13 located on the front side. A second motor 14 is provided at the rear end on one side of the bracket 1 close to the center. The end of the output shaft of the second motor 14 far from the center of the bracket 1 is respectively fixedly connected to the end of the rotating column 11 close to the center of the bracket 1. The input end of the second motor 14 is electrically connected to the output end of the single-chip microcomputer 2. When the electric hoist crane is in use, through the regulation of the single-chip microcomputer 2, the second motor 14 starts to operate. The output shaft will drive the rotating column 11 to operate, drive the second gear 13 sleeved at the end far from the center of the bracket 1 to rotate, and then drive the meshed first gear 12 to rotate, drive the roller 9 located on the same rotating column 10 to move on the track to the position where hoisting is required. Through the regulation of the single-chip microcomputer 2, the electric hoist 5 pays out the rope, and then the hook 8 drives the sliding rod 7 to slide downward inside the limit groove 6, effectively preventing a series of problems caused by the front and rear shaking during heavy object hoisting. Hang the heavy object to be hoisted on the hook 8. The electric hoist 5 takes in the rope to lift the heavy object. Through the regulation of the single-chip microcomputer 2, the motor 14 operates to move the heavy object to the position where it needs to be placed. The electric hoist 5 reverses to lower the heavy object;
[0022] Operating mechanism 4: It includes a sliding plate 41, a lifting frame 42, a hydraulic damper 43 and a lead screw 44. The inner part of the chute 3 is respectively slidably connected with the sliding plate 41. The lifting frame 42 is arranged at the bottom end between the two sliding plates 41. The front and rear ends of one side of the sliding plate 41 away from the center of the lifting frame 42 are respectively provided with a hydraulic damper 43. The lead screw 44 is rotatably connected between the left and right inner walls of the bracket 1. The middle parts of the sliding plates 41 are all threadedly connected with the lead screw 44. The operating mechanism 4 further includes a first motor 45. The first motor 45 is arranged at the top end of the right side surface of the bracket 1. The left end of the output shaft of the first motor 45 is fixedly connected with the right end of the lead screw 44. The input end of the first motor 45 is electrically connected to the output end of the single-chip microcomputer 2. Through the regulation of the single-chip microcomputer 2, the first motor 45 starts to rotate. The rotating shaft drives the lead screw 44 to rotate, driving the sliding plate 41 to slide inside the chute 3. When it slides to the required position, the first motor 45 stops rotating. When the sliding plate 41 slides to both ends of the bracket 1, the contact end of the hydraulic damper 43 contracts, playing a protective role in the structure of the electric hoist crane.
[0023] The working principle of an electric hoist crane provided by the present utility model is as follows: When the electric hoist crane is in use, through the regulation of the single-chip microcomputer 2, the second motor 14 starts to operate. The output shaft drives the rotating column 11 to operate, driving the second gear 13 sleeved at one end away from the center of the bracket 1 to rotate, and then driving the meshing first gear 12 to rotate, driving the roller 9 located on the same rotating column 10 to move on the track to the position where hoisting is required. Through the regulation of the single-chip microcomputer 2, the electric hoist 5 pays out the rope, and then the hook 8 drives the sliding rod 7 to slide downward inside the limit groove 6, effectively preventing a series of problems caused by the front and rear swaying during the hoisting of heavy objects. Hang the heavy object to be hoisted on the hook 8. The electric hoist 5 takes in the rope to lift the heavy object. Through the regulation of the single-chip microcomputer 2, the first motor 45 starts to rotate. The rotating shaft drives the lead screw 44 to rotate, driving the sliding plate 41 to slide inside the chute 3. When it slides to the required position, the first motor 45 stops rotating. When the sliding plate 41 slides to both ends of the bracket 1, the contact end of the hydraulic damper 43 contracts, playing a protective role in the structure of the electric hoist crane. Through the regulation of the single-chip microcomputer 2, the motor 14 operates to move the heavy object to the position where it needs to be placed, and the electric hoist 5 reverses to lower the heavy object.
[0024] It should be noted that, in the above embodiments, the single-chip microcomputer 2 can be selected as PIC10F200, the electric hoist 5 can be selected as the cd1 single-speed type, the first motor 45 can be selected as CV40-3700-150S, and the second motor 14 can be selected as LC31318-20NM. The single-chip microcomputer 2 controls the electric hoist 5, the first motor 45 and the second motor 14 to work by using the commonly used methods in the prior art.
[0025] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are similarly included within the patent protection scope of the present utility model.
Claims
1. An electric hoist crane, comprising a bracket (1), wherein sliding grooves (3) are respectively formed in the front and rear sides of the inner part of the upper end of the bracket (1), and the characteristics are as follows: It also includes an operating mechanism (4); Operating mechanism (4): It includes a sliding plate (41), a lifting frame (42), a hydraulic damper (43) and a lead screw (44). A sliding plate (41) is slidably connected between two chutes (3). The lifting frame (42) is arranged at the bottom end between the two sliding plates (41). Hydraulic dampers (43) are respectively arranged at the front and rear ends of one side of the sliding plate (41) far from the center of the lifting frame (42). The lead screw (44) is rotatably connected between the left and right inner walls of the upper end of the bracket (1). The middle parts of the sliding plates (41) are threadedly connected to the lead screw (44).
2. An electric hoist crane according to claim 1, characterized in that: A single-chip microcomputer (2) is arranged outside the bracket (1), and the input end of the single-chip microcomputer (2) is electrically connected to an external power supply.
3. The electric hoist crane according to claim 2, wherein: The operating mechanism (4) further includes a first motor (45). The first motor (45) is arranged at the top end of the right side of the bracket (1). The left end of the output shaft of the first motor (45) is fixedly connected to the right end of the lead screw (44). The input end of the first motor (45) is electrically connected to the output end of the single-chip microcomputer (2).
4. An electric hoist crane according to claim 2, characterized in that: An electric hoist (5) is arranged at the bottom end of the lifting frame (42). Limit slots (6) are respectively formed in the left and right inner walls of the bracket (1). A sliding rod (7) is slidably connected between the two limit slots (6). A hook (8) is sleeved outside the sliding rod (7). The top end of the hook (8) is fixedly connected to the lifting rope inside the electric hoist (5). The electric hoist (5) is electrically connected to the output end of the single-chip microcomputer (2).
5. An electric hoist crane according to claim 2, characterized in that: Rotating columns (10) are respectively rotatably connected between the left and right inner walls at the bottom end of the bracket (1). Rollers (9) are sleeved outside the rotating columns (10).
6. The electric hoist crane according to claim 5, wherein: It also includes a rotating column (11), a first gear (12) and a second gear (13). Rotating columns (11) are respectively rotatably connected to the rear ends of the inner walls on the side of the bracket (1) close to the center. Second gears (13) are respectively arranged at the ends of the rotating columns (11) far from the center. First gears (12) are respectively sleeved outside the ends of the rotating columns (10) close to the center of the bracket (1). The first gears (12) are respectively meshed and connected to the second gears (13) located on the front side.
7. An electric hoist crane according to claim 6, characterized in that: A second motor (14) is arranged at the rear end of the side of the bracket (1) close to the center. The ends of the output shafts of the second motor (14) far from the center of the bracket (1) are respectively fixedly connected to the ends of the rotating columns (11) close to the center of the bracket (1). The input end of the second motor (14) is electrically connected to the output end of the single-chip microcomputer (2).