Protective part of steering structure for crane

Abstract

The utility model relates to a protective part of a steering structure for a crane, which belongs to the technical field of cranes and comprises a crane body, a cargo boom fixedly connected outside the crane body, a pay-off device connected below the cargo boom in a rolling manner and a protective base arranged at the bottom of the crane body. A steering mechanism used for steering the crane body is arranged in the protective base, and a lubricating mechanism used for spraying lubricating liquid when the crane body is reversed is arranged in the protective base. According to the protection part of the steering structure for the crane, when a driving motor is started, a transmission gear is driven to rotate, so that a piston rod reciprocates in a piston barrel, and lubricating liquid is sucked from a storage box, conveyed into an annular mounting pipe and sprayed to a key friction part of a crane body through a liquid outlet hole; lubricating liquid is automatically sprayed during reversing of the crane body, manual intervention is not needed, the lubricating efficiency is improved, and the advantage of automatic lubricating is achieved.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically a protective component for a crane steering structure. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. It is also known as an overhead crane, gantry crane, or hoist. The working characteristic of lifting equipment is intermittent motion; that is, in a work cycle, the corresponding mechanisms for actions such as picking up, moving, and unloading materials work alternately. Cranes are becoming increasingly widespread in the market.

[0003] During crane operation, the steering structure frequently undergoes reversing operations, which intensifies friction between steering structure components and generates a large amount of heat. Prolonged exposure to high friction and high temperatures can lead to severe wear of steering structure components, reducing their service life and potentially causing safety accidents. Existing crane steering structure protection methods mostly focus on physical protection and lack effective measures for automatic lubrication and heat dissipation during reversing, failing to meet the requirements for efficient and safe crane operation. Therefore, a protective component for crane steering structures is proposed to address the aforementioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a protective component for the steering structure of a crane, which has advantages such as automatic lubrication and efficient heat dissipation. It solves the problem that most existing crane steering structure protection methods only focus on physical protection and lack effective measures for automatic lubrication and heat dissipation during reversal, thus failing to meet the needs of efficient and safe crane operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective component for a crane steering structure, comprising a crane body, a boom fixedly connected to the outside of the crane body, a wire feeder rotatably connected to the bottom of the boom, and a protective base disposed at the bottom of the crane body. The protective base is provided with a steering mechanism for steering the crane body, and a lubrication mechanism for spraying lubricating fluid when the crane body reverses direction.

[0006] The steering mechanism includes a drive motor fixedly installed on the inner bottom wall of the protective base, a transmission gear fixedly installed on the output shaft of the drive motor, a driven gear fixedly installed on the outside of the crane body, and a limiting seat fixedly installed on the top of the protective base.

[0007] The lubrication mechanism includes a storage tank fixedly connected to the inner bottom wall of the protective base, a piston cylinder fixedly connected to the top of the storage tank, a piston rod slidably connected to the inside of the piston cylinder and extending to its outside, a liquid extraction cylinder and a liquid discharge cylinder fixedly connected to the outside of the piston cylinder, an annular mounting tube fixedly installed inside the limiting seat, and a drive structure disposed inside the protective base.

[0008] Furthermore, the transmission gear and the driven gear are meshed with each other, the crane body is rotatably connected to the interior of the protective base and extends to its upper surface, and the crane body is rotatably connected to the interior of the limiting seat.

[0009] Furthermore, the drive structure includes a vertical plate fixedly connected to the inner bottom wall of the protective base, a rotating shaft rotatably connected to the inside of the vertical plate and extending to its outside, a rotating disk fixedly connected to one end of the rotating shaft, a pulley rotatably connected to the outside of the rotating disk, a sliding rod slidably connected to the outside of the pulley, a secondary bevel gear fixedly connected to the other end of the rotating shaft, and a main bevel gear fixedly installed on the top of the transmission gear.

[0010] Furthermore, the outer diameter of the pulley is adapted to the inner diameter of the slide rod, the slide rod is oscillatingly connected to the outside of the rotating disk, and the end of the piston rod away from the piston cylinder is fixedly connected to the middle of the slide rod.

[0011] Furthermore, the main bevel gear and the secondary bevel gear mesh with each other, and a bearing adapted to the rotating shaft is fixedly installed inside the vertical plate.

[0012] Furthermore, a suction tube is fixedly connected between the storage tank and the suction cylinder, and a connecting pipe is fixedly connected between the discharge cylinder and the annular mounting pipe. A number of discharge holes are opened on the inner side wall of the annular mounting pipe. An installation hole adapted to the connecting pipe is opened inside the protective base. A protective pad adapted to the connecting pipe is fixedly installed inside the installation hole. One-way valve plates are hinged inside both the storage tank and the suction cylinder, and the two one-way valve plates are arranged opposite to each other.

[0013] Furthermore, a hook is provided at the bottom of the wire feeder, and a steel wire rope is wound and connected between the hook and the wire feeder.

[0014] Furthermore, the protective base is externally fixedly connected to a mounting shell, a cooling fan is rotatably mounted inside the mounting shell, and a maintenance plate is detachably mounted on the back of the protective base via bolts.

[0015] Compared with the prior art, this utility model provides a protective component for a crane steering structure, which has the following beneficial effects:

[0016] 1. The protective components of the crane's steering structure, when the drive motor starts, drive the transmission gear to rotate. The transmission gear meshes with the driven gear, causing the crane body to begin reversing its rotation. The meshing of the main bevel gear and the secondary bevel gear drives the rotating shaft to rotate, which in turn drives the rotating disk to rotate. Through the cooperation of pulleys and slide rods, the piston rod reciprocates within the piston cylinder, drawing lubricating fluid from the storage tank and delivering it to the annular mounting pipe. The fluid is then sprayed onto the key friction parts of the crane body through the outlet hole. This achieves automatic lubrication when the crane body reverses its direction, without manual intervention, improving lubrication efficiency, reducing friction between components, and extending service life, thus achieving the advantages of automatic lubrication.

[0017] 2. The protective components of the crane's steering structure are intelligently controlled by linking the lubrication mechanism with the steering mechanism and using the power during reversal to drive the lubrication mechanism. This improves the reliability and safety of the protective components, effectively utilizes the spraying of lubricating fluid to remove heat and reduce the temperature of the steering mechanism, thus improving operational stability. The cooling fan can promptly dissipate heat from the protective base, preventing internal components from being damaged due to overheating, thereby extending the service life and operational stability of the components and achieving the advantage of efficient heat dissipation. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0019] Figure 2 This is a three-dimensional cross-sectional view of the steering mechanism and lubrication mechanism of this utility model;

[0020] Figure 3 This is a three-dimensional cross-sectional view of the lubrication mechanism of this utility model;

[0021] Figure 4 This is a three-dimensional cross-sectional view of the lubrication mechanism of this utility model;

[0022] Figure 5 This is a three-dimensional cross-sectional view of the annular mounting tube and liquid outlet hole of this utility model.

[0023] In the diagram: 1. Crane body; 2. Lifting boom; 3. Cable feeder; 4. Hook; 5. Protective base; 6. Drive motor; 7. Transmission gear; 8. Driven gear; 9. Limit seat; 10. Storage tank; 11. Piston cylinder; 12. Piston rod; 13. Suction cylinder; 14. Suction pipe; 15. Discharge cylinder; 16. Connecting pipe; 17. Annular mounting pipe; 18. Discharge hole; 19. Vertical plate; 20. Rotating shaft; 21. Rotating disk; 22. Pulley; 23. Slide rod; 24. Secondary bevel gear; 25. Main bevel gear; 26. Mounting shell; 27. Cooling fan. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1 to 5 This embodiment provides a protective component for a crane steering structure, comprising a crane body 1, a boom 2 fixedly connected to the outside of the crane body 1, a wire feeder 3 rotatably connected below the boom 2, and a protective base 5 disposed at the bottom of the crane body 1. The protective base 5 contains a steering mechanism for steering the crane body 1 and a lubrication mechanism for spraying lubricant when the crane body 1 reverses direction. The steering mechanism includes a drive motor 6 fixedly mounted on the inner bottom wall of the protective base 5, a transmission gear 7 fixedly mounted on the output shaft of the drive motor 6, a driven gear 8 fixedly mounted on the outside of the crane body 1, and a limiting seat 9 fixedly mounted on the top of the protective base 5. A hook 4 is provided at the bottom of the wire feeder 3, and a wire rope is wound and connected between the hook 4 and the wire feeder 3.

[0026] Among them, the transmission gear 7 and the driven gear 8 are meshed with each other, the crane body 1 is rotatably connected to the inside of the protective base 5 and extends to its upper surface, and the crane body 1 is rotatably connected to the inside of the limit seat 9.

[0027] In this embodiment, the lubrication mechanism includes a storage tank 10 fixedly connected to the inner bottom wall of the protective base 5, a piston cylinder 11 fixedly connected to the top of the storage tank 10, a piston rod 12 slidably connected to the inside of the piston cylinder 11 and extending to its outside, a liquid extraction cylinder 13 and a liquid discharge cylinder 15 fixedly connected to the outside of the piston cylinder 11, an annular mounting tube 17 fixedly installed inside the limiting seat 9, and a drive structure disposed inside the protective base 5.

[0028] The drive structure includes a vertical plate 19 fixedly connected to the inner bottom wall of the protective base 5, a rotating shaft 20 rotatably connected to the inside of the vertical plate 19 and extending to its outside, a rotating disk 21 fixedly connected to one end of the rotating shaft 20, a pulley 22 rotatably connected to the outside of the rotating disk 21, a sliding rod 23 slidably connected to the outside of the pulley 22, a secondary bevel gear 24 fixedly connected to the other end of the rotating shaft 20, and a main bevel gear 25 fixedly installed on the top of the transmission gear 7.

[0029] Specifically, the outer diameter of pulley 22 is matched with the inner diameter of slide rod 23, slide rod 23 is oscillatingly connected to the outside of rotating disk 21, and the end of piston rod 12 away from piston cylinder 11 is fixedly connected to the middle of slide rod 23. The main bevel gear 25 and the secondary bevel gear 24 mesh with each other, and a bearing adapted to the rotating shaft 20 is fixedly installed inside the vertical plate 19.

[0030] It should be noted that a suction tube 14 is fixedly connected between the storage tank 10 and the suction cylinder 13, and a connecting tube 16 is fixedly connected between the discharge cylinder 15 and the annular mounting tube 17. A number of discharge holes 18 are opened on the inner side wall of the annular mounting tube 17. The protective base 5 has an installation hole that matches the connecting tube 16. A protective pad that matches the connecting tube 16 is fixedly installed inside the installation hole. One-way valve plates are hinged inside both the storage tank 10 and the suction cylinder 13, and the two one-way valve plates are arranged opposite each other.

[0031] In this embodiment, when the crane body 1 performs a reversing operation, the controller starts the drive motor 6 to drive the transmission gear 7 to rotate and mesh with the driven gear 8, thereby causing the crane body 1 to start rotating and reversing. Simultaneously, the rotation of the transmission gear 7 drives the main bevel gear 25 at its top to rotate, which in turn drives the meshing secondary bevel gear 24 to rotate, thereby causing the rotating shaft 20 to drive the rotating disk 21 to rotate, and the pulley 22 on the rotating disk 21 to rotate accordingly. When the pulley 22 rotates, the sliding rod 23 slides outside the pulley 22, causing the piston rod 12 to reciprocate inside the piston cylinder 11. When the piston rod 12 moves outward inside the piston cylinder 11, a negative pressure is generated inside the piston cylinder 11, drawing lubricating fluid from the storage tank 10 through the suction cylinder 13 and the suction pipe 14. When the piston rod 12 moves inward, it squeezes the lubricant in the piston cylinder 11 into the annular mounting pipe 17 through the drain pipe 15 and the connecting pipe 16. Finally, it sprays the lubricant from the outlet hole 18 on the inner wall of the annular mounting pipe 17 onto the key friction parts of the steering mechanism of the crane body 1, which improves the timeliness and effectiveness of lubrication and ensures that the steering mechanism is always in a good lubrication state.

[0032] In this embodiment, a mounting shell 26 is fixedly connected to the outside of the protective base 5. A cooling fan 27 is rotatably mounted inside the mounting shell 26. A maintenance plate is detachably mounted on the back of the protective base 5 via bolts. Activating the cooling fan 27 via the controller allows for timely dissipation of heat from inside the protective base 5, preventing damage to internal components due to overheating and improving component lifespan and operational stability. The detachable maintenance plate on the back facilitates regular inspection and maintenance of the protective base 5 by personnel, reducing maintenance difficulty and costs, and improving equipment reliability and maintainability.

[0033] The working principle of the above embodiments is as follows:

[0034] In use, the controller starts the drive motor 6 to drive the transmission gear 7 to rotate. The transmission gear 7 meshes with the driven gear 8 to make the crane body 1 start to rotate in reverse. The meshing of the main bevel gear 25 and the secondary bevel gear 24 drives the rotating shaft 20 to rotate, which in turn drives the rotating disk 21 to rotate. Through the cooperation of the pulley 22 and the slide rod 23, the piston rod 12 reciprocates in the piston cylinder 11 to draw lubricating fluid from the storage tank 10 and deliver it to the annular mounting pipe 17. The lubricating fluid is sprayed on the key friction parts of the crane body 1 through the liquid outlet 18, realizing automatic spraying of lubricating fluid when the crane body 1 changes direction. This improves the timeliness and effectiveness of lubrication. At the same time, the lubricating fluid can carry away a lot of heat during the spraying process, effectively reducing the temperature of the steering mechanism.

[0035] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

Claims

1. A guard for a turning structure of a crane, characterized in that: The crane body (1), the crane arm (2) fixedly connected to the outside of the crane body (1), the pay-off device (3) rollingly connected below the crane arm (2), and the protection base (5) arranged at the bottom of the crane body (1), the inside of the protection base (5) is provided with a steering mechanism for steering the crane body (1), and the inside of the protection base (5) is provided with a lubricating mechanism for spraying lubricating liquid when the crane body (1) changes direction; The steering mechanism comprises a driving motor (6) fixedly installed on the inner bottom wall of the protection base (5), a transmission gear (7) fixedly installed on the output shaft of the driving motor (6), a driven gear (8) fixedly installed on the outside of the crane body (1), and a limiting seat (9) fixedly installed on the top of the protection base (5). The lubricating mechanism comprises a storage tank (10) fixedly connected to the inner bottom wall of the protection base (5), a piston cylinder (11) fixedly connected to the top of the storage tank (10), a piston rod (12) slidingly connected to the inside of the piston cylinder (11) and extending to the outside thereof, a suction cylinder (13) and a discharge cylinder (15) fixedly communicated to the outside of the piston cylinder (11), an annular mounting pipe (17) fixedly installed in the limiting seat (9), and a driving structure arranged in the protection base (5).

2. A deflector for a turning structure of a crane according to claim 1, characterized in that: The transmission gear (7) and the driven gear (8) are meshed with each other, the crane body (1) is rotatably connected to the inside of the protection base (5) and extends to the upper surface thereof, and the crane body (1) is rotatably connected to the inside of the limiting seat (9).

3. A deflector for a turning structure of a crane according to claim 1, characterized in that: The driving structure comprises a vertical plate (19) fixedly connected to the inner bottom wall of the protection base (5), a rotating shaft (20) rotatably connected to the inside of the vertical plate (19) and extending to the outside thereof, a rotating disc (21) fixedly connected to one end of the rotating shaft (20), a pulley (22) rotatably connected to the outside of the rotating disc (21), a slide rod (23) slidingly connected to the outside of the pulley (22), a secondary bevel gear (24) fixedly connected to the other end of the rotating shaft (20), and a primary bevel gear (25) fixedly installed on the top of the transmission gear (7).

4. A deflector for a turning structure of a crane according to claim 3, characterized in that: The outer diameter of the pulley (22) is matched with the inner diameter of the slide rod (23), the slide rod (23) is swingingly connected to the outside of the rotating disc (21), and the end of the piston rod (12) away from the piston cylinder (11) is fixedly connected to the middle part of the slide rod (23).

5. A deflector for a turning structure of a crane according to claim 3, characterized in that: The primary bevel gear (25) and the secondary bevel gear (24) are meshed with each other, and the inside of the vertical plate (19) is fixedly installed with a bearing matched with the rotating shaft (20).

6. A deflector for a turning structure of a crane according to claim 1, characterized in that: The storage box (10) is fixedly connected with the suction tube (14), the discharge tube (15) is fixedly connected with the connecting pipe (16), the inner side wall of the annular mounting pipe (17) is provided with a plurality of liquid outlet holes (18), the inside of the protective base (5) is provided with a mounting hole matched with the connecting pipe (16), the inside of the mounting hole is fixedly installed with a protective pad matched with the connecting pipe (16), the inside of the storage box (10) and the suction tube (13) are hingedly connected with a one-way valve plate, and the two one-way valve plates are oppositely arranged.

7. A deflector for a turning structure of a crane according to claim 1, characterized in that: The bottom of the wire unwinder (3) is provided with a lifting hook (4), and the lifting hook (4) is wound and connected with a steel wire rope between the wire unwinder (3).

8. A deflector for a turning structure of a crane according to claim 1, characterized in that: The outside of the protective base (5) is fixedly connected with a mounting shell (26), the inside of the mounting shell (26) is rotatably installed with a cooling fan (27), and the back of the protective base (5) is detachably installed with an inspection plate through bolts.

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