Simple gantry crane walking and reversing device

Abstract

The utility model relates to mechanical technical field discloses a simple and easy portal crane walking reversing device, including the hanger, the outer wall bottom of hanger installs a plurality of reversing mechanism, the reversing mechanism is used for reversing, the rear end of reversing mechanism installs the cleaning mechanism, the cleaning mechanism is used for carrying out cleaning to dust, a plurality of reversing mechanism all includes the steering wheel group, the steering wheel group installs in the outer wall bottom of hanger, the outer wall top of steering wheel group is rotatably connected with the spin axle, the outside top of steering wheel group installs the bearing plate, the inside of bearing plate with the outer wall rotatable connection of spin axle, in the utility model, the rotation of bevel gear no.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a simple gantry crane traveling commutation device. Background Technique

[0002] A gantry crane is a large-scale lifting equipment with a bridge supported on ground tracks by two side legs. It is named because it resembles the character "door". It mainly consists of a bridge, legs, a trolley running mechanism, a crab running mechanism, and a hoisting mechanism. Relying on the structural advantage of spanning both sides of the track, it can efficiently complete the vertical lifting and horizontal handling of heavy objects in open-air sites, freight yards, and port scenarios. It is widely used in container handling, steel lifting, and engineering construction fields, and is a key equipment for realizing the large-scale and precise transfer of heavy objects in modern logistics and industrial production.

[0003] In the existing gantry crane, the gantry is manually lifted by a jack, the flange on the moving wheel is fixed without bolts, the moving wheel is turned, and then the flange is locked, so as to realize the commutation of the gantry crane. However, the commutation requires multiple steps and takes a long time for a single commutation, which cannot adapt to the operation that needs to frequently adjust the direction. The existing technology adopts a combination of a small hydraulic pump station and a hydraulic cylinder. Each leg is equipped with an independent hydraulic cylinder, and the oil circuit is controlled by a solenoid valve to realize synchronous or independent lifting. With the cooperation of a displacement sensor, the lifting height can be accurately controlled. Then, the steering wheel is rotated to realize the commutation of the gantry crane. However, the gantry crane has four legs (or more). When using independent hydraulic cylinders, affected by factors such as the difference in the length of the oil pipes, the inconsistent response speed of the solenoid valves, and the different internal leakage amounts of the cylinders, the lifting heights of each leg will be inconsistent, resulting in the inclination of the gantry, causing structural deformation or cargo shaking, and there are great safety hazards. Content of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a simple gantry crane traveling commutation device, aiming to improve the problem that when the legs of the gantry crane are lifted by independent hydraulic cylinders in the prior art and then the steering wheel is rotated to realize the commutation of the gantry crane, affected by factors such as the difference in the length of the oil pipes, the inconsistent response speed of the solenoid valves, and the different internal leakage amounts of the cylinders, the lifting heights of each leg will be inconsistent, resulting in the inclination of the gantry, causing structural deformation or cargo shaking, and there are great safety hazards.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a simple gantry crane travel reversing device, comprising a hanger, wherein multiple reversing mechanisms are installed at the bottom of the outer wall of the hanger, the reversing mechanisms are used for reversing direction, and a cleaning mechanism is installed at the rear end of the reversing mechanism for cleaning dust; each of the multiple reversing mechanisms includes a steering wheel assembly, the steering wheel assembly is installed at the bottom of the outer wall of the hanger, a rotating shaft is rotatably connected to the top of the outer wall of the steering wheel assembly, a load-bearing plate is installed on the top outer side of the steering wheel assembly, the interior of the load-bearing plate is rotatably connected to the outer wall of the rotating shaft, and a drive assembly is installed at the top outer side of the steering wheel assembly.

[0006] As a further description of the above technical solution: The drive assembly includes a motor, which is mounted on the outer top of the steering wheel assembly. A drive shaft is fixedly connected to the output end of the motor. A bevel gear one is fixedly connected to the front end of the outer wall of the drive shaft. A bevel gear two is mounted on the bottom of the outer wall of the bevel gear one. The bottom of the outer wall of the bevel gear one meshes with the rear side of the outer wall of the bevel gear two. The bottom of the outer wall of the bevel gear two is fixedly connected to the top end of the outer wall of the rotating shaft. A protective cover is mounted on the outer front end of the motor. The outer wall of the protective cover is fixedly connected to the outer wall of the hanger. A heat sink is fixedly connected to the rear end of the outer wall of the motor.

[0007] As a further description of the above technical solution: The cleaning mechanism includes a cleaning brush, which is installed at the rear end of the reversing mechanism. A rotating shaft is fixedly connected to the front side of the outer wall of the cleaning brush, and a power assembly is installed at the outer rear end of the cleaning brush.

[0008] As a further description of the above technical solution: The power assembly includes a servo motor, the output end of which is fixedly connected to a worm gear. A worm wheel is mounted on the top of the outer wall of the worm gear, and the top of the outer wall of the worm gear meshes with the bottom of the outer wall of the worm wheel. The middle part of the worm wheel is fixedly connected to the outer wall of the rotating shaft. A limit ring is mounted on the front end of the outer wall of the rotating shaft, and the inside of the limit ring is rotatably connected to the outer wall of the rotating shaft. A heat sink is fixedly connected to the top of the outer wall of the limit ring.

[0009] As a further description of the above technical solution: A fixing frame is fixedly connected to the bottom of the outer wall of the motor, and the bottom end of the outer wall of the fixing frame is fixedly connected to the outer wall of the hanger.

[0010] As a further description of the above technical solution: A limit frame is installed on the outer wall of the rotating shaft, and the upper middle inner wall of the limit frame is rotatably connected to the outer wall of the rotating shaft.

[0011] As a further description of the above technical solution: A support frame is fixedly connected to the bottom of the outer wall of the servo motor, and the support frame is installed on the outside of the worm gear.

[0012] As a further description of the above technical solution: A steel plate bridge lifting cable is installed in the middle of the hanger, and multiple lead weights are fixedly connected at equal intervals to the outer wall of the steel plate bridge lifting cable.

[0013] This utility model has the following beneficial effects: 1. In this utility model, after the motor is started, its output end drives the transmission shaft to rotate synchronously, which in turn causes the bevel gear one at the front end of the outer wall of the transmission shaft to rotate. Since the bottom of the outer wall of bevel gear one is meshed with the rear side of the outer wall of bevel gear two, the rotation of bevel gear one drives bevel gear two to rotate. Since the bottom of the outer wall of bevel gear two is welded to the top of the outer wall of the rotating shaft, bevel gear two drives the rotating shaft to rotate together. The rotating shaft can rotate in the middle of the load-bearing plate, and its rotation causes the steering wheel group to rotate, thus completing the reversing action.

[0014] 2. In this utility model, when the servo motor is turned on, its output end drives the worm gear to rotate. Since the worm gear meshes with the worm wheel, the rotation of the worm gear can drive the worm wheel to rotate, which in turn drives the rotating shaft fixedly connected to the middle of the worm wheel to rotate, thereby causing the cleaning brush to rotate and clean the heat sink. A cooling fan is installed on the heat sink fixed at the top of the limit ring. When the cleaning brush rotates to clean, the cooling fan works synchronously, forming air convection inside the motor, accelerating the heat dissipation of the motor and extending the service life of the motor. Attached Figure Description

[0015] Figure 1 This is a front view of a simple gantry crane travel reversing device proposed in this utility model; Figure 2 This is a perspective view of a simple gantry crane travel reversing device proposed in this utility model; Figure 3 This is a side view of a simplified gantry crane travel reversing device proposed in this utility model; Figure 4 This is a partial structural exploded view of a simplified gantry crane travel reversing device proposed in this utility model; Figure 5 This is a diagram illustrating the reversing mechanism of a simplified gantry crane travel reversing device proposed in this utility model; Figure 6 This is a schematic diagram of the cleaning mechanism of a simple gantry crane travel reversing device proposed in this utility model.

[0016] Legend: 1. Hanger; 2. Reversing mechanism; 201. Steering wheel assembly; 202. Rotating shaft; 203. Load-bearing plate; 204. Drive assembly; 2041. Motor; 2042. Transmission shaft; 2043. Bevel gear one; 2044. Bevel gear two; 2045. Protective cover; 2046. Fixing frame; 2047. Heat sink; 3. Cleaning mechanism; 301. Cleaning brush; 302. Rotating shaft; 303. Limiting frame; 304. Power assembly; 3041. Servo motor; 3042. Worm gear; 3043. Worm wheel; 3044. Limiting ring; 3045. Heat sink; 3046. Support frame; 4. Steel plate bridge hanger cable; 5. Plumb bob. Detailed Implementation

[0017] 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.

[0018] Reference Figure 1 , Figure 2 and Figure 5 This utility model provides an embodiment of a simple gantry crane travel reversing device, including a frame 1. Multiple reversing mechanisms 2 are installed at the bottom of the outer wall of the frame 1. The reversing mechanisms 2 are used for reversing direction. A cleaning mechanism 3 is installed at the rear end of each reversing mechanism 2 for cleaning dust. Each of the multiple reversing mechanisms 2 includes a steering wheel assembly 201, which is installed at the bottom of the outer wall of the frame 1. A rotating shaft 202 is rotatably connected to the top of the outer wall of the steering wheel assembly 201. A load-bearing plate 203 is installed on the top outer side of the steering wheel assembly 201, and the interior of the load-bearing plate 203 is rotatably connected to the outer wall of the rotating shaft 202. A drive assembly 204 is installed at the top outer side of the steering wheel assembly 201, and the drive assembly 204 includes a motor 2041, which is installed on the steering wheel assembly 201. At the outer top of 1, the output end of motor 2041 is fixedly connected to drive shaft 2042. The front end of the outer wall of drive shaft 2042 is fixedly connected to bevel gear 1 2043. The bottom of the outer wall of bevel gear 1 2043 is installed with bevel gear 2044. The bottom of the outer wall of bevel gear 1 2043 meshes with the rear side of the outer wall of bevel gear 2044. The bottom of the outer wall of bevel gear 2044 is fixedly connected to the top of the outer wall of rotating shaft 202. A protective cover 2045 is installed at the outer front end of motor 2041. The outer wall of protective cover 2045 is fixedly connected to the outer wall of hanger 1. A heat sink 2047 is fixedly connected to the rear end of the outer wall of motor 2041. A fixing frame 2046 is fixedly connected to the bottom of the outer wall of motor 2041. The bottom end of the outer wall of fixing frame 2046 is fixedly connected to the outer wall of hanger 1. Specifically, after starting the motor 2041, the power generated at its output end directly drives the transmission shaft 2042 to rotate synchronously. The rotation of the transmission shaft 2042 then causes the bevel gear 2043 at the front end of the outer wall to rotate accordingly. Since the bottom of the outer wall of bevel gear 2043 is meshed with the rear side of the outer wall of bevel gear 2044, the rotation of bevel gear 2043 directly drives bevel gear 2044 to rotate. The bottom of the outer wall of bevel gear 2044 is welded to the top of the outer wall of the rotating shaft 202. Therefore, when bevel gear 2044 rotates, it drives the rotating shaft 202 to rotate as well. The rotating shaft 202 can rotate smoothly in the middle of the load-bearing plate 203. The smooth rotation of the motor 2041 directly causes the steering wheel assembly 201 to rotate, thereby completing the entire reversing action. During this process, the protective cover 2045 on the outer front end of the motor 2041 completely covers the first bevel gear 2043 and the second bevel gear 2044, providing effective protection for both and preventing external factors from interfering with the meshing transmission. The fixing bracket 2046 at the bottom of the outer wall of the motor 2041 is tightly connected to the mounting base, enhancing the stability of the motor 2041 installation and preventing shaking during operation. The heat dissipation plate 2047 at the rear end of the outer wall can quickly conduct the heat generated by the motor 2041 during operation, helping the motor 2041 to dissipate heat and ensuring that the overall mechanism always operates stably.

[0019] Reference Figure 3 , Figure 4 and Figure 6 The cleaning mechanism 3 includes a cleaning brush 301, which is installed at the rear end of the reversing mechanism 2. A rotating shaft 302 is fixedly connected to the front side of the outer wall of the cleaning brush 301. A power assembly 304 is installed at the outer rear end of the cleaning brush 301. The power assembly 304 includes a servo motor 3041, and a worm gear 3042 is fixedly connected to the output end of the servo motor 3041. A worm wheel 3043 is installed on the top of the outer wall of the worm gear 3042. The top of the outer wall of the worm gear 3042 meshes with the bottom of the outer wall of the worm wheel 3043. The middle part is fixedly connected to the outer wall of the rotating shaft 302. A limit ring 3044 is installed at the front end of the outer wall of the rotating shaft 302. The inside of the limit ring 3044 is rotatably connected to the outer wall of the rotating shaft 302. A heat sink 3045 is fixedly connected to the top of the outer wall of the limit ring 3044. A limit frame 303 is installed on the outer wall of the rotating shaft 302. The upper middle inner wall of the limit frame 303 is rotatably connected to the outer wall of the rotating shaft 302. A support frame 3046 is fixedly connected to the bottom of the outer wall of the servo motor 3041. The support frame 3046 is installed on the outside of the worm gear 3042. Specifically, after the servo motor 3041 is turned on, its output directly drives the worm gear 3042 to rotate. Since the worm gear 3042 and the worm wheel 3043 are in a meshing state, the rotation of the worm gear 3042 will directly drive the worm wheel 3043 to rotate, thereby driving the rotating shaft 302, which is fixedly connected to the middle of the worm wheel 3043, to rotate synchronously. The rear end of the rotating shaft 302 is fixedly connected to the cleaning brush 301. Therefore, when the rotating shaft 302 rotates, the cleaning brush 301 will rotate accordingly to clean the surface of the heat sink 2047. The limiting ring 3044 is installed at the front end of the rotating shaft 302. Its interior is rotatably connected to the rotating shaft 302, which can play a clear limiting role and effectively prevent the rotating shaft 302 from axial movement during rotation. The top of the limiting ring 3044 is fixed to the heat sink 3045. Two cooling fans are installed. While the cleaning brush 301 rotates to clean the heat sink 2047, the cooling fans work simultaneously, creating continuous air convection inside the motor 2041 to accelerate heat dissipation. The limit bracket 303 is installed on the outer wall of the rotating shaft 302, with its upper inner wall rotatably connected to the rotating shaft 302, which further enhances the stability of the rotating shaft 302 during rotation and prevents shaking. The bottom of the servo motor 3041 is fixed to the outside of the worm gear 3042 by the support bracket 3046, which can ensure the overall stability of the power component 304 and keep the entire cleaning mechanism 3 in a high-efficiency operating state. It can not only thoroughly clean the heat sink 2047, but also significantly accelerate the heat dissipation of the motor 2041 and extend the service life of the motor 2041.

[0020] Reference Figure 1 , Figure 2 and Figure 3 A steel plate bridge lifting cable 4 is installed in the middle of the hanger 1. Multiple plumb bobs 5 are fixedly connected at equal intervals to the outer wall of the steel plate bridge lifting cable 4. After the steel plate bridge is hoisted, the plumb bobs 5 can prevent the steel plate bridge lifting cable 4 from being blown away from the steel plate bridge in windy weather. Specifically, a steel plate bridge lifting cable 4 is installed in the middle of the hanger 1. Multiple plumb bobs 5 are installed on the outer wall of the steel plate bridge lifting cable 4. These plumb bobs 5 are evenly distributed along the length of the cable. During the lifting of the steel plate bridge, the plumb bobs 5 will increase the overall sag of the steel plate bridge lifting cable 4 by utilizing their own characteristics, so that the cable fits more tightly against the surface of the steel plate bridge. When strong winds come, they can effectively resist the wind blowing the cable and prevent the steel plate bridge lifting cable 4 from deviating from the steel plate bridge under the action of wind. This ensures the relative position of the cable and the steel plate bridge is stable during the lifting process and avoids the safety and stability of the lifting operation due to cable displacement.

[0021] Working principle: After starting motor 2041, its output end will drive transmission shaft 2042 to rotate synchronously, which in turn causes bevel gear 2043 at the front end of the outer wall of transmission shaft 2042 to rotate. Since the bottom of the outer wall of bevel gear 2043 is meshed with the rear side of the outer wall of bevel gear 2044, the rotation of bevel gear 2043 will drive bevel gear 2044 to rotate. The bottom of the outer wall of bevel gear 2044 is welded to the top of the outer wall of rotating shaft 202, so bevel gear 2044 will drive rotating shaft 202. Rotating together, the rotating shaft 202 can rotate in the middle of the load-bearing plate 203, and its rotation can cause the steering wheel group 201 to rotate, thereby completing the reversing action. During this process, the protective cover 2045 on the outer front end of the motor 2041 provides effective protection for the first bevel gear 2043 and the second bevel gear 2044. The fixing bracket 2046 at the bottom of the outer wall of the motor 2041 enhances the stability of the motor 2041 installation. The heat dissipation plate 2047 at the rear end of the outer wall can help the motor 2041 dissipate heat and ensure the stable operation of the overall mechanism. After the servo motor 3041 is turned on, its output end drives the worm gear 3042 to rotate. Since the worm gear 3042 meshes with the worm wheel 3043, the rotation of the worm gear 3042 can drive the worm wheel 3043 to rotate, which in turn drives the rotating shaft 302, which is fixedly connected to the middle of the worm wheel 3043, to rotate. The rear end of the rotating shaft 302 is fixedly connected to the cleaning brush 301, thereby causing the cleaning brush 301 to rotate and clean the heat sink 2047. The limiting ring 3044 is installed at the front end of the rotating shaft 302 and is rotatably connected to the rotating shaft 302 inside, which plays a limiting role and prevents the rotating shaft 302 from moving axially. The heat sink bracket 3045 is fixed at the top of the limiting ring 3044. Two cooling fans are installed on the top. When the cleaning brush 301 rotates for cleaning, the cooling fans work synchronously to form air convection inside the motor 2041, accelerating the heat dissipation of the motor 2041. The limit bracket 303 is installed on the outer wall of the rotating shaft 302, with the upper inner wall rotatably connected to the rotating shaft 302, further enhancing the stability of the rotating shaft 302. The bottom of the servo motor 3041 is fixed to the outside of the worm gear 3042 by the support bracket 3046, ensuring the stability of the power component 304 and enabling the entire cleaning mechanism 3 to operate efficiently. It not only cleans the heat sink 2047 but also accelerates the heat dissipation of the motor 2041, extending the service life of the motor 2041.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A simple gantry crane travel reversing device, comprising a suspension frame (1), characterized in that: The bottom of the outer wall of the hanger (1) is equipped with multiple reversing mechanisms (2), which are used for reversing. A cleaning mechanism (3) is installed at the rear end of the reversing mechanism (2), which is used for cleaning dust. Each of the aforementioned reversing mechanisms (2) includes a steering wheel assembly (201), which is mounted on the bottom of the outer wall of the hanger (1). A rotating shaft (202) is rotatably connected to the top of the outer wall of the steering wheel assembly (201). A load-bearing plate (203) is mounted on the top of the outer side of the steering wheel assembly (201). The interior of the load-bearing plate (203) is rotatably connected to the outer wall of the rotating shaft (202). A drive assembly (204) is mounted on the top of the outer side of the steering wheel assembly (201).

2. The simplified gantry crane travel reversing device according to claim 1, characterized in that: The drive assembly (204) includes a motor (2041), which is mounted on the outer top of the steering wheel assembly (201). The output end of the motor (2041) is fixedly connected to a drive shaft (2042). A bevel gear (2043) is fixedly connected to the front end of the outer wall of the drive shaft (2042). A bevel gear (2044) is installed on the bottom of the outer wall of the bevel gear (2043). The bottom of the outer wall of the bevel gear (2043) meshes with the rear side of the outer wall of the bevel gear (2044). The bottom of the outer wall of the bevel gear (2044) is fixedly connected to the top end of the outer wall of the rotating shaft (202). A protective cover (2045) is installed on the outer front end of the motor (2041). The outer wall of the protective cover (2045) is fixedly connected to the outer wall of the hanger (1). A heat sink (2047) is fixedly connected to the rear end of the outer wall of the motor (2041).

3. The simplified gantry crane travel reversing device according to claim 1, characterized in that: The cleaning mechanism (3) includes a cleaning brush (301), which is installed at the rear end of the reversing mechanism (2). A rotating shaft (302) is fixedly connected to the front side of the outer wall of the cleaning brush (301), and a power assembly (304) is installed at the outer rear end of the cleaning brush (301).

4. A simplified gantry crane travel reversing device according to claim 3, characterized in that: The power assembly (304) includes a servo motor (3041), the output end of which is fixedly connected to a worm gear (3042). A worm wheel (3043) is installed on the top of the outer wall of the worm gear (3042). The top of the outer wall of the worm gear (3042) meshes with the bottom of the outer wall of the worm wheel (3043). The middle part of the worm wheel (3043) is fixedly connected to the outer wall of the rotating shaft (302). A limit ring (3044) is installed at the front end of the outer wall of the rotating shaft (302). The inside of the limit ring (3044) is rotatably connected to the outer wall of the rotating shaft (302). A heat sink (3045) is fixedly connected to the top of the outer wall of the limit ring (3044).

5. A simplified gantry crane travel reversing device according to claim 2, characterized in that: A fixing frame (2046) is fixedly connected to the bottom of the outer wall of the motor (2041), and the bottom of the outer wall of the fixing frame (2046) is fixedly connected to the outer wall of the hanger (1).

6. A simplified gantry crane travel reversing device according to claim 3, characterized in that: A limit frame (303) is installed on the outer wall of the rotating shaft (302), and the inner wall of the upper middle part of the limit frame (303) is rotatably connected to the outer wall of the rotating shaft (302).

7. A simplified gantry crane travel reversing device according to claim 4, characterized in that: The bottom of the outer wall of the servo motor (3041) is fixedly connected to a support frame (3046), which is installed on the outside of the worm gear (3042).

8. A simplified gantry crane travel reversing device according to claim 1, characterized in that: A steel plate bridge lifting cable (4) is installed in the middle of the hanger (1), and multiple plumb bobs (5) are fixedly connected at equal intervals to the outer wall of the steel plate bridge lifting cable (4).

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