Anti-falling limiting structure of rotating trolley on crane

Abstract

The utility model relates to the field of crane trolleys, in particular to an anti-falling limiting structure of a rotating trolley on a crane. The technical problem that in the using process of the crane rotating trolley, due to the fact that the trolley needs to rotate on both sides frequently, after the trolley is used for a long time, a rotating structure of the rotating trolley on a crane is often disengaged or deflected due to loss generated during rotation is solved. According to the technical scheme, the anti-falling limiting structure of the rotating trolley on the crane comprises a trolley assembly, a limiting assembly, a rotating assembly and a driving assembly; according to the utility model, the special one-way ratchet wheel structure is arranged to replace the original rotating structure, so as to solve the problem that in the using process of the rotating trolley of the crane, the trolley needs to frequently perform bilateral rotation, so that the trolley cannot rotate after being used for a long time; and a rotating structure of a rotating trolley on the crane is often separated or deflected due to loss generated during rotation.

Description

Technical Field

[0001] The utility model relates to the field of crane trolleys, in particular to an anti - detachment limit structure for a rotating trolley on a crane. Background Art

[0002] A crane refers to a multi - action lifting machine that vertically lifts and horizontally transports heavy objects within a certain range. It is also called a overhead crane, gantry crane, or hoist. A bridge crane is a lifting device that spans over workshops, warehouses, and yards for material lifting. Since its two ends are located on tall concrete columns or metal brackets, it resembles a bridge. The bridge of the bridge crane runs longitudinally along the tracks laid on both sides of the elevated racks, and can make full use of the space under the bridge to lift materials without being hindered by ground equipment. It is the most widely used and most numerous type of lifting machine. It is equipped with a trolley and a hoisting mechanism on the bridge. The trolley can run back and forth, and there are mechanisms such as the running of the gantry. It realizes the handling of material objects in three - dimensional space. However, due to the diverse hoisting environments, the existing trolleys need to be rotatable. During the use of the rotating trolley, because its two sides need to rotate continuously, after long - term use, it often produces detachment or deflection phenomena, which in turn affects the normal use of the trolley. Content of the Utility Model

[0003] In order to overcome the problem that during the use of the rotating trolley of a crane, because the trolley needs to rotate bilaterally frequently, after long - term use, the rotating structure of the rotating trolley on the crane often produces detachment or deflection due to the loss during rotation.

[0004] The technical solution of the utility model is: an anti - detachment limit structure for a rotating trolley on a crane, which includes a trolley assembly, a limit assembly, a rotating assembly, and a driving assembly; a limit assembly is arranged at the lower end of the trolley assembly; a rotating assembly is arranged at the lower end of the limit assembly; a driving assembly is arranged at the rear end of the rotating assembly.

[0005] Preferably, the movement is carried out through the trolley assembly, the rotation of the rotating assembly is limited by the limit assembly, the limit assembly is driven to rotate by the rotating assembly, and the rotating assembly is driven to rotate by the driving assembly.

[0006] Preferably, the trolley assembly includes a fixed bottom plate, a runner arm, a traveling wheel, a mounting plate, an electric push rod, a moving piece, a limit rod, and a rotating ring; a plurality of runner arms are installed at the lower end of the fixed bottom plate; a traveling wheel is installed at the lower end of the runner arm, and the movement adjustment of the trolley is realized through the traveling wheel.

[0007] Preferably, a mounting plate is installed on the lower end surface of the fixed base plate; an electric push rod is arranged on one side of the mounting plate; a moving piece is installed at the lower end of the electric push rod; a limiting rod is installed on the moving piece; a rotating ring is installed on the mounting plate, and the electric push rod is used to drive the limiting rod to move so as to limit the limiting hole.

[0008] Preferably, the limiting component includes a connecting turntable, a rotating shaft, a locking bolt, a fixed ratchet wheel, a fixed ring, a positioning block, a return spring, a guiding strip, a rotating plate, a connecting ring, a connecting sleeve, a fixed bottom ring and a fixed head; a connecting turntable is arranged at the upper end of the fixed base plate; a rotating shaft is installed at the lower end of the connecting turntable; a rotating plate is arranged on the outer side of the rotating shaft; a fixed ratchet wheel is arranged at the upper end of the rotating plate, and the rotation of the rotating component is limited by the arrangement of the fixed ratchet wheel.

[0009] Preferably, a fixed ring is arranged on the outer side of the fixed ratchet wheel; a locking bolt is installed on the rotating plate; a connecting ring is installed on the locking bolt; a connecting sleeve is installed at the lower end of the connecting ring; the lower end of the connecting sleeve is fixedly connected with a fixed bottom ring; a fixed head is arranged on the inner side of the fixed bottom ring; a guiding strip is fixedly connected to the upper end of the rotating plate; a positioning block is slidably connected to the guiding strip; a return spring is fixedly connected to the positioning block, and the positioning and rebound of the positioning block are realized through the arrangement of the return spring.

[0010] Preferably, the rotating component includes a rotating seat, a positioning ring, a bevel gear ring, a combined ring and a limiting hole; a rotating seat is rotatably connected to the rotating ring; a positioning ring is fixedly connected to the upper end of the rotating seat; a bevel gear ring is fixedly connected to the lower end of the rotating seat; a combined ring is fixedly connected to the outer side of the rotating ring; a plurality of limiting holes are formed in the combined ring, and the positioning and fixing of the combined ring are realized through the arrangement of the limiting holes.

[0011] Preferably, the driving component includes a bevel gear, a motor rotating shaft and a driving motor; a bevel gear is engaged with the lower end of the bevel gear ring; a motor rotating shaft is installed on the bevel gear; the driving motor is rotatably connected to the motor rotating shaft through a coupling, and the bevel gear is driven to rotate by the driving motor.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. By setting a special one-way ratchet structure to replace the original rotating structure, the problem that in the process of using the rotating trolley of the crane, due to the need for the trolley to rotate bilaterally frequently, after long-term use, the rotating structure of the rotating trolley on the crane often becomes disengaged or skewed due to the loss generated during rotation can be solved.

[0014] 2. By the mutual cooperation of the fixed ratchet and the positioning block, when the fixed ratchet rotates counterclockwise, the rotating shaft can be driven to rotate synchronously, so as to drive the connecting turntable to rotate through the rotating shaft, so as to realize the rotation adjustment of the trolley. When the fixed ratchet rotates clockwise, the positioning block can be toggled to move continuously through the mutual cooperation of the return spring and the positioning block, so as to reduce the loss of the trolley during use by controlling the trolley to rotate only in one direction. At the same time, the electric push rod is used to drive the limiting rod into the interior of the limiting hole to realize the locking of the rotating structure of the trolley, and the anti-disengagement limit of the trolley is realized by rotating the locking structure, so that the rotating shaft will not drive the connecting turntable to rotate, and thus the use convenience of the whole anti-disengagement limit structure can be improved to a certain extent. Description of the Drawings

[0015] Figure 1 The figure shows the first three-dimensional structural schematic diagram of the anti-disengagement limit structure of the present invention;

[0016] Figure 2 The figure shows the second three-dimensional structural schematic diagram of the anti-disengagement limit structure of the present invention;

[0017] Figure 3 The figure shows the first three-dimensional structural schematic diagram of the limit assembly of the anti-disengagement limit structure of the present invention;

[0018] Figure 4 The figure shows the second three-dimensional structural schematic diagram of the limit assembly of the anti-disengagement limit structure of the present invention;

[0019] Figure 5 The figure shows the three-dimensional structural schematic diagram of the rotating assembly of the anti-disengagement limit structure of the present invention.

[0020] Description of the reference numerals: 1. Trolley assembly; 2. Limit assembly; 3. Rotating assembly; 4. Driving assembly; 101. Fixed bottom plate; 102. Rotating wheel arm; 103. Traveling wheel; 104. Mounting plate; 105. Electric push rod; 106. Moving piece; 107. Limiting rod; 108. Rotating ring; 201. Connecting turntable; 202. Rotating shaft; 203. Locking bolt; 204. Fixed ratchet; 205. Fixed ring; 206. Positioning block; 207. Return spring; 208. Guide bar; 209. Rotating plate; 210. Connecting ring; 211. Connecting sleeve; 212. Fixed bottom ring; 213. Fixed head; 301. Rotating seat; 302. Positioning ring; 303. Bevel gear ring; 304. Combined ring; 305. Limiting hole; 401. Bevel gear; 402. Motor rotating shaft; 403. Driving motor. Detailed Description of the Invention

[0021] The present invention will be further described below in conjunction with the drawings and embodiments.

[0022] Please refer to Figures 1 - 3 , the present utility model provides an embodiment: a structure for preventing the rotation trolley of a crane from getting out of limit, which includes a trolley assembly 1, a limit assembly 2, a rotating assembly 3 and a driving assembly 4; a limit assembly 2 is arranged at the lower end of the trolley assembly 1; a rotating assembly 3 is arranged at the lower end of the limit assembly 2; a driving assembly 4 is arranged at the rear end of the rotating assembly 3. The trolley assembly 1 includes a fixed bottom plate 101, a runner arm 102, a traveling wheel 103, a mounting plate 104, an electric push rod 105, a moving piece 106, a limit rod 107 and a rotating ring 108; a plurality of runner arms 102 are installed at the lower end of the fixed bottom plate 101; a traveling wheel 103 is installed at the lower end of the runner arm 102, and the movement adjustment of the trolley is realized through the traveling wheel 103. A mounting plate 104 is installed on the lower end surface of the fixed bottom plate 101; an electric push rod 105 is arranged on one side of the mounting plate 104; a moving piece 106 is installed at the lower end of the electric push rod 105; a limit rod 107 is installed on the moving piece 106; a rotating ring 108 is installed on the mounting plate 104. The electric push rod 105 is used to drive the limit rod 107 to move so as to realize the limit of the limit hole 305. The driving assembly 4 includes a bevel gear 401, a motor rotating shaft 402 and a driving motor 403; the bevel gear 401 is engaged with the lower end of the bevel gear ring 303; the motor rotating shaft 402 is installed on the bevel gear 401; the driving motor 403 is rotationally connected to the motor rotating shaft 402 through a coupling, and the bevel gear 401 is driven to rotate by the driving motor 403.

[0023] Please refer to Figures 4 - 5, in this embodiment, the limiting component 2 includes a connecting turntable 201, a rotating shaft 202, a locking bolt 203, a fixed ratchet wheel 204, a fixed ring 205, a positioning block 206, a return spring 207, a guiding strip 208, a rotating plate 209, a connecting ring 210, a connecting sleeve 211, a fixed bottom ring 212 and a fixed head 213; a connecting turntable 201 is arranged at the upper end of the fixed bottom plate 101; a rotating shaft 202 is installed at the lower end of the connecting turntable 201; a rotating plate 209 is arranged on the outer side of the rotating shaft 202; a fixed ratchet wheel 204 is arranged at the upper end of the rotating plate 209, and through the arrangement of the fixed ratchet wheel 204, the rotation limit of the rotating component 3 is realized; a fixed ring 205 is arranged on the outer side of the fixed ratchet wheel 204; a locking bolt 203 is installed on the rotating plate 209; a connecting ring 210 is installed on the locking bolt 203; a connecting sleeve 211 is installed at the lower end of the connecting ring 210; a fixed bottom ring 212 is fixed at the lower end of the connecting sleeve 211; a fixed head 213 is arranged on the inner side of the fixed bottom ring 212; a guiding strip 208 is fixedly connected to the upper end of the rotating plate 209; a positioning block 206 is slidably connected to the guiding strip 208; a return spring 207 is fixedly connected to the positioning block 206, and through the arrangement of the return spring 207, the positioning and rebounding of the positioning block 206 are realized. The rotating component 3 includes a rotating seat 301, a positioning ring 302, a bevel gear ring 303, a combined ring 304 and a limiting hole 305; a rotating seat 301 is rotatably connected to the rotating ring 108; a positioning ring 302 is fixedly connected to the upper end of the rotating seat 301; a bevel gear ring 303 is fixedly connected to the lower end of the rotating seat 301; a combined ring 304 is fixedly connected to the outer side of the rotating ring 108; a plurality of limiting holes 305 are formed in the combined ring 304, and through the arrangement of the limiting holes 305, the positioning and fixing of the combined ring 304 are realized.

[0024] When working, the driving motor 403 drives the bevel gear 401 to rotate, and the bevel gear 401 drives the bevel gear ring 303 to drive the rotating seat 301 to rotate, so as to drive the combined ring 304 to rotate through the rotating seat 301, the combined ring 304 drives the rotating shaft 202 to rotate, and the rotating shaft 202 drives the connecting turntable 201 to rotate, so as to realize the rotation adjustment of the upper end structure of the trolley.

[0025] During the use of the anti - detachment and limit structure by the user, the fixed ratchet wheel 204 and the positioning block 206 can cooperate with each other. When the fixed ratchet wheel 204 is rotated counterclockwise, the rotating shaft 202 can be driven to rotate synchronously, so as to drive the connecting turntable 201 to rotate through the rotating shaft 202, realizing the rotational adjustment of the trolley. When the fixed ratchet wheel 204 is rotated clockwise, the return spring 207 and the positioning block 206 can cooperate with each other to continuously move the positioning block 206, so as to reduce the loss of the trolley during use by controlling the trolley to rotate unidirectionally. At the same time, the electric push rod 105 is used to drive the limiting rod 107 into the inside of the limiting hole 305 to lock the rotating structure of the trolley, and the anti - detachment and limit of the trolley is realized by rotating the locking structure, so that the rotating shaft 202 will not drive the connecting turntable 201 to rotate, thereby improving the use convenience of the entire anti - detachment and limit structure to a certain extent.

[0026] Through the above steps, a special one - way ratchet structure is set to replace the original rotating structure to solve the problem that during the use of the rotating trolley of the crane, due to the need for the trolley to rotate bilaterally frequently, after long - term use, the rotating structure of the rotating trolley on the crane often becomes detached or skewed due to the loss generated during rotation. At the same time, the trolley assembly 1 can be moved, the limiting assembly 2 can limit the rotating assembly 3, the rotating assembly 3 can drive the limiting assembly 2 to rotate, and the driving assembly 4 can drive the rotating assembly 3 to rotate.

[0027] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above - mentioned embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A anti - detachment limit structure for a rotating trolley on a crane, comprising a trolley assembly (1); characterized in that: It also includes a limit component (2), a rotating component (3), and a driving component (4); a limit component (2) is provided at the lower end of the trolley component (1); a rotating component (3) is provided at the lower end of the limit component (2); a driving component (4) is provided at the rear end of the rotating component (3).

2. The anti - detachment limit structure of the slewing trolley on a crane according to claim 1, characterized in that: The trolley component (1) includes a fixed bottom plate (101), a runner arm (102), a traveling wheel (103), a mounting plate (104), an electric push rod (105), a moving piece (106), a limit rod (107), and a rotating ring (108); a plurality of runner arms (102) are installed at the lower end of the fixed bottom plate (101); a traveling wheel (103) is installed at the lower end of the runner arm (102).

3. A rotary trolley anti - detachment limit structure on a crane according to claim 2, characterized in that: A mounting plate (104) is installed on the lower end surface of the fixed bottom plate (101); an electric push rod (105) is provided on one side of the mounting plate (104); a moving piece (106) is installed at the lower end of the electric push rod (105); a limit rod (107) is installed on the moving piece (106); a rotating ring (108) is installed on the mounting plate (104).

4. A rotary trolley anti - detachment limit structure on a crane according to claim 1, characterized in that: The limit component (2) includes a connecting turntable (201), a rotating shaft (202), a locking bolt (203), a fixed ratchet (204), a fixed ring (205), a positioning block (206), a return spring (207), a guiding strip (208), a rotating plate (209), a connecting ring (210), a connecting sleeve (211), a fixed bottom ring (212), and a fixed head (213); a connecting turntable (201) is provided at the upper end of the fixed bottom plate (101); a rotating shaft (202) is installed at the lower end of the connecting turntable (201); a rotating plate (209) is provided on the outer side of the rotating shaft (202); a fixed ratchet (204) is provided at the upper end of the rotating plate (209).

5. A rotary trolley anti - detachment limit structure on a crane according to claim 4, characterized in that: A fixed ring (205) is provided on the outer side of the fixed ratchet (204); a locking bolt (203) is installed on the rotating plate (209); a connecting ring (210) is installed on the locking bolt (203); a connecting sleeve (211) is installed at the lower end of the connecting ring (210); a fixed bottom ring (212) is fixedly connected to the lower end of the connecting sleeve (211); a fixed head (213) is provided inside the fixed bottom ring (212); a guiding strip (208) is fixedly connected to the upper end of the rotating plate (209); a positioning block (206) is slidably connected to the guiding strip (208); a return spring (207) is fixedly connected to the positioning block (206).

6. A rotary trolley anti - detachment limit structure on a crane according to claim 3, characterized in that: The rotating component (3) includes a rotating seat (301), a positioning ring (302), a bevel gear ring (303), a combined ring (304), and a limit hole (305); a rotating seat (301) is installed on the rotating ring (108); a positioning ring (302) is fixedly connected to the upper end of the rotating seat (301); a bevel gear ring (303) is fixedly connected to the lower end of the rotating seat (301); a combined ring (304) is fixedly connected to the outer side of the rotating ring (108); a plurality of limit holes (305) are formed in the combined ring (304).

7. A rotary trolley anti - detachment limit structure on a crane according to claim 6, characterized in that: The driving component (4) includes a bevel gear (401), a motor rotating shaft (402) and a driving motor (403); the lower end of the bevel gear ring (303) meshes with the bevel gear (401); the bevel gear (401) is mounted with the motor rotating shaft (402); the driving motor (403) is rotatably connected to the motor rotating shaft (402) through a coupling.

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