CN215828184U

CN215828184U - Crown block

Info

Publication number: CN215828184U
Application number: CN202122200418.5U
Authority: CN
Inventors: 赵前程
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-15
Anticipated expiration: 2031-09-10

Abstract

The utility model relates to a crown block which comprises a moving frame, a first driving mechanism, a second driving mechanism and a lifting mechanism. The movable frame comprises a fixed frame, two movable brackets and a lead screw, wherein the movable brackets can be connected with the fixed frame in a relatively sliding manner along a first direction and can slide along the first direction under the driving of a first driving mechanism. The lead screw is rotatably connected between the two movable brackets along a second direction intersecting with the first direction and can further slide along the first direction along with the movable brackets. The sliding nut is sleeved on the lead screw, the lead screw is driven by the second motor to rotate, and then the sliding nut slides along the second direction relative to the lead screw. The lifting mechanism is connected with the sliding nut, and can be driven by the sliding nut to move along the second direction. The lead screw moves along with the movable support and drives the hoisting mechanism to move along the first direction through the sliding nut. Therefore, the overhead travelling crane can realize lifting along the first direction and the second direction in two intersecting directions, and is very flexible.

Description

Crown block

Technical Field

The utility model relates to the technical field of hoisting equipment, in particular to a crown block.

Background

With the rapid development of the industry, a plurality of heavy objects are required to be carried in production and transportation, and then the overhead travelling crane is produced. The overhead traveling crane is widely used in different scenes such as factories, ports and warehouses, can efficiently lift cargoes, and has the advantages of compact overall dimension, low building clearance height, light dead weight, small wheel pressure and the like.

However, the conventional crown block usually has only one direction moving function, for example, only can be lifted in the longitudinal direction or only can be lifted in the transverse direction, so that the functionality and the practicability are not strong, the crown block cannot adapt to more application scenes, and articles cannot be lifted more flexibly.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide an overhead travelling crane capable of lifting in two intersecting directions.

A crown block, comprising:

the movable frame comprises a fixed frame, two movable brackets and a lead screw; the fixed frame is fixed relative to the ground, the two movable supports are arranged at two opposite ends of the fixed frame and are controlled to slide relative to the fixed frame along a first direction, and the lead screw is arranged between the two movable supports along a second direction intersecting with the first direction and is respectively in rotatable connection with the two movable supports;

the first driving mechanism comprises a first motor and a transmission assembly, one end of the transmission assembly is in transmission connection with the first motor, the other end of the transmission assembly is in transmission connection with one of the movable supports, and the transmission assembly is controlled to drive the movable supports to slide along the first direction relative to the fixed frame;

the second driving mechanism comprises a second motor and a sliding nut, the second motor is in transmission connection with the lead screw, and the sliding nut is sleeved on the lead screw and is controlled to slide along the second direction relative to the lead screw; and

and the hoisting mechanism is connected with the sliding nut and used for hoisting the articles to be transported.

In one embodiment, the transmission assembly includes a first driving member, a driving rod, and a second driving sleeve, the first driving member is sleeved on the movable bracket and is in transmission connection with one end of the driving rod, and the second driving sleeve is sleeved on the other end of the driving rod and is in transmission connection with the first motor;

the second driving sleeve drives the driving rod to rotate under the driving of the first motor, so that the first driving piece drives the movable support to slide along the first direction.

In one embodiment, the first driving member includes a first driving sleeve and a transmission seat, the first driving sleeve is sleeved on the movable support, one end of the transmission seat is connected to the first driving sleeve, and the other end of the transmission seat is connected to the driving rod in a transmission manner and driven by the driving rod to rotate around a connection point of the transmission seat and the first driving sleeve, so that the first driving member drives the movable support to slide along the first direction.

In one embodiment, the first drive sleeve is slidable along the mobile carriage and/or the second drive sleeve is slidable along the drive rod.

In one embodiment, the second driving sleeve can slide along the driving rod, a spring is sleeved on the driving rod, one end of the spring abuts against the second driving sleeve, and the other end of the spring abuts against one end of the transmission seat connected with the driving rod.

In one embodiment, the fixing frame comprises two trusses arranged at intervals along the second direction, and each truss extends lengthwise along the first direction; the two movable brackets are respectively and longitudinally extended below the two trusses along a third direction;

the first direction, the second direction and the third direction are pairwise perpendicular.

In one embodiment, each truss includes a frame body, a slide rail and a slide block, the slide rail is fixed relative to the frame body and extends lengthwise along the first direction with the frame body, the slide block is disposed on the slide rail, and one end of each movable support is connected with the slide block so as to slide along the lengthwise direction of the frame body relative to the slide rail along the slide rail under the action of external force.

In one embodiment, the number of the first driving mechanisms is two, the transmission assembly of each group of the first driving mechanisms is in transmission connection with one of the moving brackets, and the first motors of the two groups of the first driving mechanisms synchronously act and drive the two moving brackets to synchronously slide.

In one embodiment, the second driving mechanism further includes a second motor base and a coupler, the second motor base is fixed on one of the movable supports, the second motor is mounted on the second motor base, and an output shaft of the second motor is in transmission connection with one end of the lead screw through the coupler.

In one embodiment, the lifting mechanism comprises a hook and a plurality of cables, and the hook is hung on the sliding nut through the cables.

The movable support of the overhead travelling crane can be connected with the fixed frame in a relatively sliding manner along a first direction and can slide along the first direction under the driving of the first driving mechanism. The lead screw is rotatably connected between the two movable brackets along a second direction intersecting with the first direction and can further slide along the first direction along with the movable brackets. The sliding nut is sleeved on the lead screw, the lead screw is driven by the second motor to rotate, and then the sliding nut slides along the second direction relative to the lead screw. The lifting mechanism is connected with the sliding nut, the second direction can be driven by the sliding nut, and the screw rod moves along with the movable support and drives the lifting mechanism to move along the first direction through the sliding nut. Therefore, the overhead travelling crane can realize lifting along the first direction and the second direction in two intersecting directions, and is very flexible.

Drawings

Fig. 1 is a schematic structural diagram of an overhead traveling crane according to an embodiment of the present invention;

fig. 2 is a schematic partial structure diagram of the overhead travelling crane shown in fig. 1.

100. A crown block; 10. a truss; 11. a frame body; 12. a slide rail; 13. a slide rail fixing seat; 14. a slider; 15. a lead screw fixing seat; 20. moving the support; 23. a roller; 31. a first motor; 32. a transmission assembly; 321. a drive rod; 322. a first driving member; 3221. a transmission seat; 3222. a first drive bushing; 3223. a first rotating shaft; 323. a second drive bushing; 324. a spring; 37. a first motor mount; 40. a lead screw; 41. a second motor; 42. a sliding nut; 43. a second motor mount; 44. a coupling; 50. a hoisting mechanism; 51. hooking; 52. a cable.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, an overhead traveling crane 100 according to an embodiment of the present invention includes a moving frame, a first driving mechanism, a second driving mechanism, and a lifting mechanism 50. The moving frame is a structural frame of the whole overhead travelling crane 100 and also provides support for the movement of the hoisting mechanism 50. The first driving mechanism and the second driving mechanism are respectively connected to corresponding positions of the movable frame and can respectively drive the lifting mechanism 50 to move along the first direction and the second direction.

In some embodiments, the moving frame includes a fixed frame, two moving supports 20, and a lead screw 40. The fixed frame is fixed relative to the ground, and the two movable brackets 20 are arranged at two opposite ends of the fixed frame and controlled to slide along a first direction relative to the fixed frame. The lead screw 40 is disposed between the two moving brackets 20 in a second direction intersecting the first direction and is rotatably coupled to the two moving brackets 20, respectively. Therefore, the lead screw 40 can slide in the first direction following the two moving brackets 20.

Further, the holder comprises two girders 10 arranged at a distance from each other in the second direction, each girder 10 extending lengthwise in the first direction. Each moving bracket 20 is disposed below each girder 10 and extends lengthwise in a third direction.

In this embodiment, the first direction, the second direction and the third direction are perpendicular to each other. The two girders 10 are parallel to the ground, the two movable supports 20 are perpendicular to the two girders 10, respectively, and the screw 40 is connected between the two movable supports 20 and is perpendicular to both the two movable supports 20 and the two girders 10. It can be understood that the setting angle of the truss 10, the angular relationship between the movable support 20 and the truss 10, and the angular relationship between the lead screw 40 and the movable support 20 may be changed according to different application scenarios and requirements, and only the stability of the movable frame formed by the mutual connection needs to be satisfied, and the lead screw 40 may move along the lengthwise direction of the truss 10 along with the movable support 20, which is not specifically limited herein.

In some embodiments, each truss 10 includes a frame 11, a slide rail 12, and a slider 14. The support body 11 provides the basis for the installation of each part, and slide rail 12 is fixed for support body 11 relatively, and all extend along first direction lengthwise with support body 11, and slider 14 sets up on slide rail 12 to can slide (slide along first direction promptly) along slide rail 12 under the exogenic action. One end of each moving bracket 20 is connected to the sliding block 14, and the other end is provided with a roller 23 to facilitate sliding relative to the sliding rail 12 along the longitudinal direction of the frame 11 along with the sliding block 14 under the action of external force.

In this embodiment, the slider 14 is provided with the lead screw fixing seat 15, two ends of the lead screw 40 are respectively and rotatably fixed on the lead screw fixing seats 15 of the two trusses 10 through bearings, and the lead screw 40 is not directly connected with the moving support 20, and it can be understood that the connection positions of the two ends of the lead screw 40 only need to satisfy the fixation of the relative moving support 20 and can ensure to move along with the moving support 20, and no specific limitation is made herein.

Furthermore, each truss 10 further includes two slide rail fixing seats 13, the two slide rail fixing seats 13 are respectively fixed on the periphery sides of the two ends of the frame body 11, and the two ends of the slide rail 12 are respectively erected and fixed on the two slide rail fixing seats 13.

In some embodiments, the first drive mechanism includes a first motor 31 and a transmission assembly 32. One end of the transmission component 32 is in transmission connection with the first motor 31, and the other end is in transmission connection with one of the movable brackets 20, and is controlled to drive the movable bracket 20 to move along a first direction relative to the fixed frame. Be close to the fixed first motor cabinet 37 that is provided with on ground of first motor 31, first motor 31 is placed on first motor cabinet 37, and then makes first motor 31 possess an appropriate height and guarantee the installation better stable.

Further, the crown block 100 comprises two sets of first driving mechanisms, the transmission assembly 32 of each set of first driving mechanism is respectively in transmission connection with one of the movable supports 20, and the first motors 31 of the two sets of first driving mechanisms synchronously act and drive the two movable supports 20 to synchronously slide, so that the two ends of the screw rod 40 are stressed more uniformly, the transmission force is more stable, and heavier goods can be conveniently hoisted.

In some embodiments, the transmission assembly 32 includes a first drive member 322, a drive rod 321, and a second drive sleeve 323. The first driving member 322 is sleeved on the movable bracket 20 and is in transmission connection with one end of the driving rod 321, and the second driving sleeve 323 is sleeved on the other end of the driving rod 321 and is in transmission connection with the first motor 31. The second driving sleeve 323 drives the driving rod 321 to rotate under the driving of the first motor 31, so that the first driving member 322 drives the moving bracket 20 to slide along the first direction.

Specifically, the first driving member 322 includes a first driving sleeve 3222 and a driving seat 3221. The first driving sleeve 3222 is sleeved on the movable support 20, one end of the driving seat 3221 is connected to the first driving sleeve 3222, and the other end of the driving seat 3221 is connected to the driving rod 321 in a driving manner and rotates with a connection point of the driving rod 321 and the first driving sleeve 3222 as a fulcrum, so that the first driving member 322 drives the movable support 20 to slide along the first direction. In this embodiment, the driving seat 3221 is "L" shaped, a first rotating shaft 3223 is disposed at a connection point of the driving seat 3221 and the first driving sleeve 3222, and the driving seat 3221 rotates around the first rotating shaft 3223. Further, the first drive sleeve 3222 may slide along the moving support 20 and/or the second drive sleeve 323 may slide along the drive rod 321. Through the transmission seat 3221, the first driving sleeve 3222 and the second driving sleeve 323, a better transmission connection can be provided between the driving rod 321 and the moving bracket 20, so as to better drive the moving bracket 20 to move. The sliding of the first driving sleeve 3222 and/or the second driving sleeve 323 can make the moving bracket 20 move more smoothly and continuously.

Furthermore, the second driving sleeve 323 can slide along the driving rod 321, a spring 324 is sleeved on the driving rod 321, one end of the spring 324 abuts against the second driving sleeve 323, and the other end abuts against one end of the transmission seat 3221 connected to the driving rod 321. The spring 324 may preferably cooperate with sliding the second driving sleeve 323 along the driving rod 321, and during the swing of the driving rod 321, the spring 324 is compressed or stretched between the second driving sleeve 323 and the driving seat 3221, and the generated elastic force thereof helps to push or pull the moving support 20 to slide along the first direction, and helps to push the second driving sleeve 323 to slide, and also helps to push the first driving sleeve 3222 to slide when the first driving sleeve 3222 can slide along the moving support 20.

In some embodiments, the second driving mechanism includes a second motor 41 and a sliding nut 42, the second motor 41 is in transmission connection with the lead screw 40, and the sliding nut 42 is sleeved on the lead screw 40 and controlled to slide along the second direction relative to the lead screw 40. The second motor 31 drives the screw 40 to rotate, and further drives the sliding nut 42 sleeved on the screw 40 to slide relative to the screw 40.

Specifically, the second driving mechanism further includes a second motor base 43 and a coupling 44. The second motor base 43 is fixed on one of the movable supports 20, the second motor 41 is mounted on the second motor base 43, and the output shaft thereof is in transmission connection with one end of the screw 40 through the coupling 44. The second motor 41 moves along with the moving support 20 through the second motor base 43 and then synchronously moves along with the lead screw 40, so that the lead screw 40 is stably driven to rotate through the coupler 44 in the process that the lead screw 40 slides along with the moving support 20 relative to the fixed frame.

In some embodiments, the handling mechanism 50 comprises a hook 51 and a number of cables 52. The hook 51 is hung on the slide nut 42 via a cable 52. The hook 51 can be widely used for transporting various materials, is very practical, and has a stable connection relationship with the sliding nut 42 through a plurality of cables 52.

In the overhead traveling crane 100, the movable support 20 is connected to the fixed frame so as to be relatively slidable in the first direction, and is driven by the first driving mechanism to slide in the first direction. The lead screw 40 is rotatably connected between the two moving brackets 20 in a second direction crossing the first direction, and is slidable in the first direction following the moving brackets 20. The lead screw 40 is sleeved with a sliding nut 42, and the lead screw 40 is driven by a second motor 41 to rotate, so that the sliding nut 42 slides along a second direction relative to the lead screw 40. The lifting mechanism 50 is connected with the sliding nut 42, so that the screw 40 moves along with the moving bracket 20 and drives the lifting mechanism 50 along the first direction through the sliding nut 42 along the second direction under the driving of the sliding nut 42. Therefore, the overhead travelling crane 100 can realize lifting along two intersecting directions, namely the first direction and the second direction, and is very flexible. Two sets of first driving mechanisms are arranged to drive the two movable brackets 20 to move synchronously, so that the two ends of the screw rod 40 are stressed uniformly. Through the mounting seat 43, the first driving sleeve 3222 and the second driving sleeve 323, a better transmission connection between the driving rod 321 and the moving rack 20 can be achieved, so as to better drive the moving rack 20 to move. A spring 324 is provided to better cooperate with sliding the second driving sleeve 323 along the driving rod 321, and during the rotation of the driving rod 321, the spring 324 is compressed or stretched between the second driving sleeve 323 and the driving seat 3221, and the generated elastic force helps to push or pull the moving support 20 to slide along the first direction.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A crown block, characterized in that it comprises:

2. The overhead traveling crane according to claim 1, wherein the transmission assembly comprises a first driving member, a driving rod, and a second driving sleeve, the first driving member is sleeved on the movable bracket and is in transmission connection with one end of the driving rod, and the second driving sleeve is sleeved on the other end of the driving rod and is in transmission connection with the first motor;

3. The overhead traveling crane according to claim 2, wherein the first driving member comprises a first driving sleeve and a transmission seat, the first driving sleeve is sleeved on the movable support, one end of the transmission seat is connected to the first driving sleeve, and the other end of the transmission seat is connected to the driving rod in a transmission manner and driven by the driving rod to rotate around a connection point of the transmission seat and the first driving sleeve, so that the first driving member drives the movable support to slide along the first direction.

4. The crown block according to claim 3, characterized in that said first driving bushing is slidable along said mobile carriage and/or said second driving bushing is slidable along said driving rod.

5. The overhead traveling crane according to claim 4, wherein the second driving sleeve is slidable along the driving rod, a spring is sleeved on the driving rod, one end of the spring abuts against the second driving sleeve, and the other end of the spring abuts against one end of the driving seat connected with the driving rod.

6. The overhead traveling crane according to any one of claims 1 to 5, wherein the fixed frame includes two girders spaced apart from each other in the second direction, each of the girders extending lengthwise in the first direction; the two movable brackets are respectively and longitudinally extended below the two trusses along a third direction;

7. The overhead traveling crane according to claim 6, wherein each of the trusses includes a frame body, a slide rail and a slide block, the slide rail is fixed with respect to the frame body and extends lengthwise along the first direction with respect to the frame body, the slide block is disposed on the slide rail, and one end of each of the moving brackets is connected to the slide block so as to slide along the lengthwise direction of the frame body with respect to the slide rail along the slide rail under the action of an external force.

8. The overhead traveling crane according to claim 1, wherein the number of the first driving mechanisms is two, the transmission assembly of each of the first driving mechanisms is in transmission connection with one of the moving brackets, and the first motors of the two sets of the first driving mechanisms synchronously operate and drive the two moving brackets to synchronously slide.

9. The overhead traveling crane according to claim 1, wherein the second driving mechanism further comprises a second motor base and a coupling, the second motor base is fixed to one of the movable supports, the second motor is mounted on the second motor base, and an output shaft of the second motor is in transmission connection with one end of the lead screw through the coupling.

10. The overhead traveling crane according to claim 1, wherein the hoisting mechanism comprises a hook and a plurality of cables, and the hook is hung on the sliding nut through the cables.