A crane trolley rotating structure

Abstract

The utility model discloses a rotating structure of a crane trolley, comprising a cross beam, a lifting trolley is slidably provided on the upper side of the cross beam, a rotating rod is vertically rotated and inserted into the middle part of the lifting trolley, a limiting plate is provided on the top of the rotating rod corresponding to the upper side of the lifting trolley, so as to reduce the friction between the limiting plate and the lifting trolley when the rotating rod rotates, a limiting structure is provided at the outer wall of the limiting plate corresponding to the upper side of the lifting trolley, a rotating structure which can drive the rotating rod to rotate is also provided at the lower part of the lifting trolley corresponding to the rotating rod on the lower side of the lifting trolley, and a lifting plate is transversely provided at the bottom of the rotating rod; the rotating rod can be driven to rotate by the rotating structure, thereby driving the goods under the lifting plate to rotate at an angle, which is convenient for transportation, and then the limiting plate with adjusted angle can be limited by the limiting structure to ensure stability during transportation, and when it is necessary to release the limit, the limiting plate can be released by the limiting structure, which is convenient for the lifting work at the lower side, and is quick and convenient with high practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a crane trolley rotating structure. Background Art

[0002] Cranes are mainly used for loading and unloading operations in outdoor cargo yards, material yards, and bulk cargo. Their metal structure is like a door-shaped frame, with two legs installed under the load-bearing main beam. They can run directly on the ground track, and both ends of the main beam can have outward cantilever beams. They have the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility.

[0003] Utility model patent CN220412661U discloses a gantry crane electric trolley rotating device, including an electric trolley body and a moving wheel, a fixing plate is fixedly connected to the top of the outer surface of the electric trolley body, a fixing ring is fixedly connected to the upper surface of the fixing plate, a limiting groove is provided on the upper surface of the fixing ring, a rotatable limiting ring is arranged inside the limiting groove, and a limiting hole is provided on the outer surface of the limiting ring.

[0004] The trolley rotating device of the crane limits the rotated trolley by inserting a limit block into the limit hole after the trolley is rotated. However, due to the continuous action of the spring, the normal rotation of the limit ring cannot be guaranteed, and there is no structure for releasing the limit. After the transportation is completed, when it needs to be transported again, manual or other methods are needed to help the limit block to be reset, which has poor practicality. Utility Model Content

[0005] In view of the technical problems in the above-mentioned prior art, the utility model provides a crane trolley rotating structure, aiming to solve the above-mentioned problems.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A crane trolley rotating structure comprises a crossbeam, a lifting trolley is slidably provided on the upper side of the crossbeam, a rotating rod is vertically rotatably inserted in the middle of the lifting trolley, a limit plate is provided on the top of the rotating rod corresponding to the upper side of the lifting trolley, a limit structure is provided on the outer wall of the limit plate on the upper side of the lifting trolley, a rotating structure that can drive the rotating rod to rotate is provided on the lower side of the lifting trolley corresponding to the rotating rod, and a lifting plate is laterally provided on the bottom of the rotating rod.

[0008] Preferably, the limiting structure includes a fixed block fixed on the upper side of the lifting trolley, and the fixed block is laterally provided with an insertion rod on the side facing the outer wall of the limiting disk, and the outer wall of the limiting disk is provided with a plurality of limiting holes corresponding to the circular array of the insertion rods, and one end of the insertion rod facing away from the limiting hole passes through the fixed block and is slidably connected thereto, and a push-pull assembly is provided in the fixed block corresponding to the insertion rod.

[0009] Preferably, the push-pull assembly includes a transversely arranged hydraulic cylinder, which is connected to an external hydraulic device. The hydraulic cylinder is provided with a piston rod at one end corresponding to the insertion rod, and a movable cavity is opened in the fixed block corresponding to the insertion rod. The end of the insertion rod located in the movable cavity is provided with a limit slider slidably connected to the movable cavity. The piston rod of the hydraulic cylinder extends into the movable cavity through the fixed block and abuts against the limit slider. The piston rod of the hydraulic cylinder is slidably connected to the fixed block, and a spring is provided on the side of the movable cavity corresponding to the limit slider facing the insertion rod, and the spring is inserted on the insertion rod.

[0010] Preferably, the rotating structure includes a rotating motor fixedly mounted on the bottom of the lifting trolley, the rotating motor is electrically connected to an external control device, a gear is fixedly mounted at the driving end of the bottom of the rotating motor, and a gear ring meshing with the gear is disposed on the outer wall of the rotating rod corresponding to the gear.

[0011] Preferably, a limiting sleeve is provided on the lower side of the lifting trolley corresponding to the outer periphery of the rotating rod.

[0012] Preferably, the lower side surface of the limiting plate has a plurality of rollers in a circular array corresponding to the upper side surface of the lifting trolley, and the plurality of rollers are rotatably connected to the lower side surface of the limiting plate.

[0013] Preferably, an annular limiting groove is provided on the upper side of the lifting trolley corresponding to the rollers arranged in the annular array.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a crane trolley rotating structure. When rotating at an angle, the rotating motor is controlled by an external control device to rotate, thereby driving the rotating rod to rotate, and rotating the cargo on the lower side of the lifting plate at an angle. After rotating to a certain angle, the external control device controls the hydraulic device to drive the piston rod of the hydraulic cylinder to extend, so as to abut against the insertion rod to be inserted into the limiting insertion hole of the side wall of the limiting plate, and the rotating rod after rotation is limited and fixed, thereby ensuring the stability of the rotated cargo during transportation.

[0016] When the limit needs to be released, it is only necessary to control the piston rod of the hydraulic cylinder to retract through the external control device, and the insertion rod is pulled out of the limit socket under the action of the spring, thereby releasing the limit on the limit plate, which is convenient and quick and improves its practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of a crane trolley rotating structure described in the utility model;

[0018] Figure 2This is an enlarged view of point A of the crane trolley rotating structure described in the utility model.

[0019] In the figure: 1. crossbeam; 2. lifting trolley; 21. limiting sleeve; 22. annular limiting groove; 3. rotating rod; 31. limiting plate; 32. limiting socket; 33. gear ring; 34. roller; 4. limiting structure; 41. fixing block; 42. inserting rod; 43. hydraulic cylinder; 44. movable chamber; 45. limiting slider; 46. spring; 5. rotating structure; 51. rotating motor; 52. gear; 6. lifting plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-2 In the embodiment proposed in the present application, a crane trolley rotating structure includes a crossbeam 1, a lifting trolley 2 is slidably provided on the upper side of the crossbeam 1, a rotating rod 3 is vertically rotated and inserted in the middle of the lifting trolley 2, a limit plate 31 is provided on the top of the rotating rod 3 corresponding to the upper side of the lifting trolley 2, a plurality of rollers 34 are arranged in a circular array on the lower side of the limit plate 31 corresponding to the upper side of the lifting trolley 2, and the plurality of rollers 34 are rotatably connected to the lower side of the limit plate 31, and the rollers 34 arranged in the circular array on the upper side of the lifting trolley 2 are provided with The annular limiting groove 22 reduces the friction between the limiting plate 31 and the lifting trolley 2 when the rotating rod 3 rotates. A limiting structure 4 is provided on the upper side of the lifting trolley 2 corresponding to the outer wall of the limiting plate 31. A limiting sleeve 21 is provided on the lower side of the lifting trolley 2 corresponding to the outer periphery of the rotating rod 3 to increase its stability when the rotating rod 3 rotates. A rotating structure 5 that can drive the rotating rod 3 to rotate is also provided on the lower side of the lifting trolley 2 corresponding to the rotating rod 3 and located at the lower part of the lifting trolley 2. A lifting plate 6 is laterally provided at the bottom of the rotating rod 3.

[0022] The rotating rod 3 can be driven to rotate through the rotating structure 5, thereby driving the goods under the lifting plate 6 to rotate at an angle for easy transportation. The limiting structure 4 can then limit the limiting plate 31 after the angle adjustment to ensure stability during transportation. When the limit needs to be released, the limiting plate 31 can be released through the limiting structure 4 to facilitate the lifting work on the lower side. It is convenient, fast and highly practical. The principles and control methods of the lifting of the lifting trolley and its operation on the beam are all existing technologies and will not be elaborated here.

[0023] In another embodiment, see Figure 1-2The limiting structure 4 includes a fixed block 41 fixed on the upper side of the lifting trolley 2, and a plug-in rod 42 is horizontally provided on the side of the fixed block 41 facing the outer wall of the limiting plate 31. A plurality of limiting holes 32 are opened in a circular array on the outer wall of the limiting plate 31 corresponding to the plug-in rod 42. One end of the plug-in rod 42 facing away from the limiting hole 32 passes through the fixed block 41 and is slidably connected thereto, and a push-pull component is provided in the fixed block 41 corresponding to the plug-in rod 42.

[0024] In this embodiment, the push-pull assembly includes a hydraulic cylinder 43 arranged transversely, the hydraulic cylinder 43 is connected to an external hydraulic device, the hydraulic cylinder 43 is provided with a piston rod at one end corresponding to the plug-in rod 42, a movable cavity 44 is opened in the fixed block 41 corresponding to the plug-in rod 42, and a limit slider 45 is provided at one end of the plug-in rod 42 located in the movable cavity 44 and is slidably connected to the movable cavity 44. The piston rod of the hydraulic cylinder 43 extends through the fixed block 41 into the movable cavity 44 and abuts against the limit slider 45. The piston rod of the hydraulic cylinder 43 is slidably connected to the fixed block 41, and a spring 46 is provided in the movable cavity 44 on the side corresponding to the limit slider 45 facing the plug-in rod 42, and the spring 46 is inserted on the plug-in rod 42;

[0025] When the angle rotation is performed, the rotating rod is driven to rotate through the rotating structure 5 to rotate the cargo on the lower side of the lifting plate 6. After rotating to a certain angle, the external control device controls the hydraulic device to drive the piston rod of the hydraulic cylinder 43 to extend, thereby abutting against the plug-in rod 42 inserted into the limit socket 32 ​​on the side wall of the limit plate 31, and the rotated rotating rod 3 is limited and fixed to ensure the stability of the rotated cargo during transportation; when it is necessary to release the limit, it is only necessary to control the piston rod of the hydraulic cylinder 43 to contract through the external control device, and the plug-in rod 42 is pulled out of the limit socket 32 ​​under the action of the spring 46, thereby releasing the limit on the limit plate 31. The external control device, hydraulic device, control method and connection method here are all existing technologies and will not be elaborated here.

[0026] In another embodiment, see Figure 1-2 The rotating structure 5 includes a rotating motor 51 fixedly arranged at the bottom of the lifting trolley 2, and the rotating motor 51 is electrically connected to the external control device. A gear 52 is fixedly arranged at the driving end of the bottom of the rotating motor 51, and a gear ring 33 meshing with the gear 52 is arranged at the outer wall of the rotating rod 3 corresponding to the gear 52; the rotating motor 51 rotates to drive the gear 52 to rotate, thereby driving the gear ring 33 meshing with the gear 52 to rotate, so that the angle of the rotating rod 3 is adjusted. The forward and reverse control method of the rotating motor 51 and the connection with the external control device here belong to the existing technology and will not be described here.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] In the description of the present invention, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crane trolley rotating structure, comprising a crossbeam (1), a crane trolley (2) being slidably disposed on the upper side of the crossbeam (1), characterized in that: A rotating rod (3) is vertically rotatably inserted in the middle of the lifting trolley (2); a limit plate (31) is provided at the top of the rotating rod (3) corresponding to the upper side of the lifting trolley (2); a limit structure (4) is provided at the outer wall of the upper side of the lifting trolley (2) corresponding to the limit plate (31); a rotating structure (5) capable of driving the rotating rod (3) to rotate is provided at the lower side of the lifting trolley (2) corresponding to the rotating rod (3); and a lifting plate (6) is transversely provided at the bottom of the rotating rod (3).

2. A crane trolley rotating structure according to claim 1, characterized in that: The limiting structure (4) comprises a fixed block (41) fixedly arranged on the upper side of the lifting trolley (2); a plug-in rod (42) is transversely arranged on the side of the fixed block (41) facing the outer wall of the limiting plate (31); a plurality of limiting insertion holes (32) are arranged in a circular array on the outer wall of the limiting plate (31) corresponding to the plug-in rod (42); one end of the plug-in rod (42) facing away from the limiting insertion hole (32) passes through the fixed block (41) and is slidably connected thereto; a push-pull assembly is arranged in the fixed block (41) corresponding to the plug-in rod (42).

3. A crane trolley rotating structure according to claim 2, characterized in that: The push-pull assembly comprises a hydraulic cylinder (43) arranged transversely, the hydraulic cylinder (43) being connected to an external hydraulic device, the hydraulic cylinder (43) being provided with a piston rod having one end corresponding to the insertion rod (42), a movable cavity (44) being provided in the fixed block (41) corresponding to the insertion rod (42), a limit slider (45) being slidably connected to the movable cavity (44) being provided at one end of the insertion rod (42) located in the movable cavity (44), the piston rod of the hydraulic cylinder (43) extending into the movable cavity (44) through the fixed block (41) and abutting against the limit slider (45), the piston rod of the hydraulic cylinder (43) being slidably connected to the fixed block (41), a spring (46) being provided in the movable cavity (44) corresponding to the limit slider (45) facing the insertion rod (42), and the spring (46) being inserted on the insertion rod (42).

4. The crane trolley rotating structure according to claim 1, characterized in that: The rotating structure (5) comprises a rotating motor (51) fixedly arranged at the bottom of the lifting trolley (2), the rotating motor (51) being electrically connected to an external control device, a gear (52) being fixedly arranged at the driving end at the bottom of the rotating motor (51), and a gear ring (33) meshing with the gear (52) being arranged at the outer wall of the rotating rod (3) corresponding to the gear (52).

5. The crane trolley rotating structure according to claim 1, characterized in that: A limiting sleeve (21) is provided on the lower side of the lifting trolley (2) corresponding to the outer periphery of the rotating rod (3).

6. The crane trolley rotating structure according to claim 1, characterized in that: The lower side of the limiting plate (31) has a plurality of rollers (34) in a circular array corresponding to the upper side of the lifting trolley (2), and the plurality of rollers (34) are rotatably connected to the lower side of the limiting plate (31).

7. A crane trolley rotating structure according to claim 6, characterized in that: An annular limiting groove (22) is provided on the upper side of the lifting trolley (2) corresponding to the rollers (34) arranged in an annular array.

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