CN113415736A

CN113415736A - Rotary crane

Info

Publication number: CN113415736A
Application number: CN202110735768.3A
Authority: CN
Inventors: 邵维嘉; 沈熠
Original assignee: Changshu Tongrun Auto Accessory Co Ltd
Current assignee: Changshu Tongrun Auto Accessory Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-09-21

Abstract

The invention discloses a rotary crane, comprising: a boom portion; the strut part comprises a strut and a pull rod which are connected with each other; a lifting part arranged between the arm hanging part and the support column part; the base part comprises folding legs, a support and a base, the support is fixed in the base, and the folding legs are fixed on the support; a fixed shaft is arranged in the center of the base, a rotating sleeve is arranged below the pull rod, and the rotating sleeve is sleeved on the fixed shaft and can rotate around the fixed shaft; the base is equipped with the spout all around, the stay below is equipped with slide mechanism, and slide mechanism can slide in the spout. The invention has simple structure, convenient use and strong practicability.

Description

Rotary crane

Technical Field

The invention relates to a crane, in particular to a rotary crane.

Background

The crane is used for transferring the load.

The lifting function is realized between the suspension arm and the support column of the crane through the oil cylinder, the base is fixedly connected with the support column, and the crane can be matched with an engine support or other repair equipment for use only by dragging the crane to the upper part of the open ground. When the crane is used, the heavy object is generally hoisted by the hoisting arm, then the crane is pushed to integrally move to the other side, then the heavy object is unloaded, and then the crane is pushed back, so that the operation is repeated, the consumption is very high, and the use is very inconvenient.

In the prior art, a rotary suspension arm is used for transferring heavy objects, but in this case, the arrangement of a lifting oil cylinder is complicated, and the cost is high.

Disclosure of Invention

Aiming at the problem that a crane in the prior art is inconvenient in load movement, the invention provides a rotary crane which is simple in structure and strong in practicability.

In order to achieve the above purpose, the invention provides the following technical scheme:

a rotary crane comprising:

a boom portion;

the strut part comprises a strut and a pull rod which are connected with each other;

a lifting part arranged between the arm hanging part and the support column part;

the base part comprises folding legs, a support and a base, the support is fixed in the base, and the folding legs are fixed on the support;

a fixed shaft is arranged in the center of the base, a rotating sleeve is arranged below the pull rod, and the rotating sleeve is sleeved on the fixed shaft and can rotate around the fixed shaft;

the base is equipped with the spout all around, the stay below is equipped with slide mechanism, and slide mechanism can slide in the spout.

As a further improvement to the invention, the lifting portion comprises a hydraulic ram.

As a further improvement of the invention, one end of the pull rod is connected with the middle part of the support column, and the other end is rotationally connected with the fixed shaft through the rotating sleeve. The pull rod is arranged in the middle of the support column, so that the deflection generated by torsion is reduced, and the invention is more stable.

As a further improvement of the invention, the upper part of the supporting column is provided with a push handle.

As a further improvement of the invention, a fixing mechanism is also arranged between the base and the supporting column.

As a further improvement of the invention, the fixing mechanism comprises a first hole which is arranged on the base and is close to the sliding groove, a second hole which is arranged at the bottom of the support column and a bolt, and the support column is arranged on the base through the first hole, the second hole and the bolt.

As a further improvement of the invention, the first holes are respectively arranged on the inner plate and the outer plate of the base.

As a further improvement of the present invention, the sliding groove is provided along a circumferential direction of the base.

As a further improvement of the invention, the included angle between the starting end and the terminating end of the sliding chute is not less than 90 degrees.

As a further improvement of the invention, the sliding groove is a circular groove structure with a fixed shaft as a center (namely, an included angle between the starting end and the terminating end of the sliding groove is 360 degrees).

As a further improvement of the invention, the base comprises an upper plate and a lower plate which are arranged up and down, the upper plate comprises an inner plate and an outer plate which are arranged on the same horizontal plane, the inner plate is an annular plate taking a fixed shaft as a circle center, and the inner diameter of the outer plate is larger than the outer diameter of the inner plate; and annular vertical plates are respectively arranged between the inner plate and the lower plate and between the outer plate and the lower plate to form the sliding groove.

As a further improvement to the present invention, the intersection of the vertical plate and the inner plate is near the outer edge of the inner plate.

As a further improvement to the present invention, the intersection of the vertical plate and the outer plate is near the inner edge of the outer plate. The inner plate and the outer plate are protruded out of the vertical plate by prolonging the outer diameter of the inner plate and the inner diameter of the outer plate, so that the roller below the support column can be prevented from upwards deviating when rolling in the sliding groove.

As a further improvement of the invention, the two vertical plates are provided with an opening along the radial direction of the base.

As a further improvement of the invention, the angle of the opening is 30 °. Through the opening, the roller is convenient to assemble at the bottom of the support column; and the opening is very small, so that the normal rotation of the crane cannot be influenced.

As a further improvement of the invention, the bottom ends of the two vertical plates are also provided with a flat plate, and the lower surface of the flat plate is connected with the upper surface of the lower plate.

As a further improvement of the invention, the vertical plate and the flat plate are of an integrated structure.

As a further improvement of the invention, the vertical plate and the flat plate are made of steel materials and are connected with the upper plate through welding.

As a further improvement of the invention, the base also comprises a side plate which is vertically arranged with the upper plate and the lower plate and can slide on the outer edge of the lower plate.

As a further improvement of the invention, the fixed shaft and the support are fixed above the lower plate.

As a further improvement of the invention, the fixed shaft is positioned at the central point of the lower plate, and the supports are symmetrically arranged along the fixed shaft.

As a further improvement of the invention, a groove is arranged at the connecting part of the support and the folding leg, and the groove forms a part of the sliding groove.

As a further improvement of the invention, the support and the folding leg are connected through a bolt.

As a further improvement of the invention, four supports and four folding legs are provided.

As a further improvement of the invention, the rotating sleeve and the fixed shaft are fixed through a fixed cap.

As a further improvement to the invention, the fixed shaft is of a cylindrical structure, and the inner wall of the fixed shaft is provided with an internal thread; the diameter of the top of the fixed cap is larger than the inner diameter of the rotating sleeve, and the bottom of the fixed cap is provided with an external thread matched with the internal thread.

As a further improvement of the invention, the rotating sleeve is internally provided with a bearing.

As a further improvement of the invention, the bottom of the support column is provided with a roller shaft, and the roller shaft is provided with a roller matched with the roller shaft.

As a further improvement of the invention, the roller shaft and the roller are fixed by a clamping spring sheet. The roller can be prevented from being separated from the roller shaft.

As a further improvement of the invention, the roller shaft comprises a vertical shaft connected with the support column and a transverse shaft connected with the roller, clamping grooves are formed in the two ends of the transverse shaft along the circumferential direction of the transverse shaft, and the clamping spring pieces are arranged in the clamping grooves.

As a further improvement of the invention, when the suspension arm part is horizontally loaded and the supporting column part and the folding leg are in the same vertical plane, the distance from the loading end of the suspension arm part to the lifting part is larger than the distance from the folding leg to the lifting part.

Has the advantages that:

according to the technical scheme, the rotary crane provided by the invention realizes load transfer without modifying a lifting mechanism (oil cylinder). The invention designs a structure which can simultaneously rotate the lifting arm part and the support column part so as to realize load transfer by correspondingly improving the structures of the support column and the pull rod and comprehensively considering the dead weight of the base. The invention has simple structure, convenient use and strong practicability.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view (with side panel removed) of fig. 1.

Fig. 3 is a schematic structural diagram of the base.

Fig. 4 is a schematic structural view of the stand and the folding leg.

Fig. 5 is a schematic structural view of the fixing shaft.

Fig. 6 is a schematic structural view of the fixed shaft and the rotating sleeve.

Fig. 7 is a schematic structural view of the fixing shaft, the rotating sleeve and the fixing cap.

Fig. 8 is a schematic structural view of the tie rod and the brace.

Fig. 9 is a sectional view of the inside of the rotating sleeve.

Fig. 10 is a schematic view of the structure of the roller shaft and the stay.

FIG. 11 is a schematic view of the structure of the roller shaft, the roller and the stay.

Wherein the numbers have the following meanings: 1. a boom portion; 2. a strut section; 3. a lifting part; 5. a base; 6. folding the legs; 7. a support; 21. bracing columns; 22. a pull rod; 51. a lower plate; 52. an inner plate; 53. an outer plate; 54. a side plate; 55. a fixed shaft; 56. a fixing cap; 57. a first hole; 58. a vertical plate; 59. a flat plate; 61. a groove; 211. a push handle; 212. a roller shaft; 213. a roller; 214: a clamping spring piece; 215: a second hole; 221. rotating the sleeve; 222. and a bearing.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.

The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Similarly, the singular forms "a," "an," or "the" do not denote a limitation of quantity, but rather denote the presence of at least one, unless the context clearly dictates otherwise. The terms "comprises," "comprising," or the like, mean that the elements or items listed before "comprises" or "comprising" encompass the features, integers, steps, operations, elements, and/or components listed after "comprising" or "comprising," and do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships may also be changed accordingly.

A rotary crane comprising:

a boom portion 1;

a stay 21 portion 2 including a stay 21 and a pull rod 22 connected to each other;

a lifting part 3 provided between the boom part 1 and the stay 21 part 2; the lifting part 3 is used for providing power to realize lifting or descending of the lifting arm part 1;

the base 5 part comprises a folding leg 6, a support 7 and a base 5, wherein the support 7 is fixed in the base 5, and the folding leg 6 is fixed on the support 7; the folding legs 6 and the supports 7 are used for supporting the balance of the lifting arm part 1, the supporting column 21 part 2 and the lifting part 3; the self-weight of the base 5 further improves the balance of the present invention.

A fixed shaft 55 is arranged at the center of the base 5, a rotating sleeve 221 is arranged below the pull rod 22, and the rotating sleeve 221 is sleeved on the fixed shaft 55 and can rotate around the fixed shaft 55;

the base 5 is provided with sliding grooves around, and a sliding mechanism is arranged below the support column 21 and can slide in the sliding grooves.

The upper portion of the brace 21 is provided with a push handle 211 for rotating the brace 21 so that the brace 21 slides along the sliding groove. One end of the pull rod 22 is connected with the middle part of the support column 21 through a bolt, and the other end is rotationally connected with the fixed shaft 55 through the rotating sleeve 221, and the pull rod 22 is arranged in the middle part of the support column 21, so that the deflection generated by torsion is reduced, and the invention is more stable.

And a fixing mechanism is also arranged between the base 5 and the support column 21. The fixing mechanism comprises a first hole 57 which is arranged on the base 5 and is close to the sliding groove, a second hole 215 which is arranged at the bottom of the support column 21 and a bolt, and the support column 21 is arranged on the base 5 through the first hole 57, the second hole 215 and the bolt. The fixing mechanism is not limited thereto, and a fixing mechanism capable of fixing the stay 21 at the target position of the chute without movement is within the scope of the present invention.

The sliding groove is arranged along the circumferential direction of the base 5.

Specifically, an included angle between a starting end and a terminating end of the sliding groove is not less than 90 degrees. The length of the sliding groove is not limited in this embodiment, as long as the sliding groove can rotate a certain angle to move the weight from one end to the target position.

Specifically, the sliding groove is a circular groove 61 structure with the fixed shaft 55 as a center (i.e., an included angle between a start end and a stop end of the sliding groove is 360 °). The sliding groove can be a circular sliding groove which takes the central shaft as the center of a circle, so that the range of the rotation of the crane is wider.

The base 5 comprises an upper plate and a lower plate 51 which are arranged up and down, the upper plate comprises an inner plate 52 and an outer plate 53 which are arranged on the same horizontal plane, the inner plate 52 is an annular plate taking a fixed shaft 55 as a circle center, and the inner diameter of the outer plate 53 is larger than the outer diameter of the inner plate 52; an annular vertical plate 58 is respectively arranged between the inner plate 52 and the lower plate 51 and between the outer plate 53 and the lower plate 51 to form the sliding groove.

Specifically, the intersection of the vertical plate 58 and the inner plate 52 is close to the outer edge of the inner plate 52, and the intersection of the vertical plate 58 and the outer plate 53 is close to the inner edge of the outer plate 53. By extending the outer diameter of the inner plate 52 and the inner diameter of the outer plate 53 to protrude the inner plate 52 and the outer plate 53 from the vertical plate 58, the roller 213 below the stay 21 can be prevented from being displaced upward when rolling in the slide groove.

Specifically, the two vertical plates 58 are provided with an opening along the radial direction of the base 5, and the included angle of the openings is 30 °. Through such an opening, the bottom of the stay 21 is conveniently equipped with the roller 213; the opening is small and will not affect the normal rotation of the crane, and the opening angle can be in the range of 20-60 degrees or in a larger or smaller range, as long as the convenient installation of the roller 213 at the bottom of the support column 21 can be realized, and the use of the sliding groove can not be affected.

Specifically, the bottom ends of the two vertical plates 58 are further provided with a flat plate 59, and the lower surface of the flat plate 59 is connected with the upper surface of the lower plate 51. The vertical plate 58 and the flat plate 59 are of an integrated structure and made of steel materials, and are connected with the upper plate through welding. The channel steel structure is not easy to damage.

Specifically, the base 5 further includes a side plate 54, which is perpendicular to both the upper plate and the lower plate 51, and the side plate 54 can slide on the outer edge of the lower plate 51. The side plate 54 is similar to a sliding door, and is designed to have an attractive appearance and convenient use, so the slidable mechanism is not limited thereto.

Specifically, the first holes 57 are respectively provided on the inner plate 52 and the outer plate 53, close to the sliding grooves, and when the stay 21 is slid to a target position, the stay 21 can be fixed by bolts and the second holes 215 at the bottom of the stay 21, thereby preventing the stay 21 from sliding.

The fixed shaft 55 and the support 7 are fixed above the lower plate 51.

Specifically, the fixed shaft 55 is located at the center point of the lower plate 51, and the supports 7 are symmetrically arranged along the fixed shaft 55.

Specifically, a groove 61 is formed at the joint of the support 7 and the folding leg 6, and the groove 61 forms a part of the sliding chute.

In particular, the support 7 and the folding leg 6 are connected through a bolt.

Specifically, the number of the support 7 and the number of the folding legs 6 are four.

When the boom portion 1 is horizontally loaded and the stay portion is in the same vertical plane as the folding leg 6 (when the pulley at the bottom of the stay portion is located in the groove formed by the folding leg and the support), the distance from the loading end of the boom portion 1 to the lifting portion 3 is greater than the distance from the folding leg 6 to the lifting portion 3. The design can ensure that the whole crane keeps stable.

Specifically, the distance from the load end of the boom part 1 to the lifting part 3 is greater than the distance from the folding leg 6 to the lifting part 3 by a ratio of 1: 1.15. Of course, it is preferable to use a ratio larger than this, which is a balance between production cost and stability.

In this embodiment, the distance from the loading end of the boom part 1 to the lifting part 3 is 1000mm, and the distance from the folding leg 6 to the lifting part 3 is more than 1150 mm.

The rotating sleeve 221 and the fixed shaft 55 are fixed by a fixing cap 56.

Specifically, the fixed shaft 55 has a cylindrical structure, and an inner wall of the fixed shaft is provided with an internal thread; the diameter of the top of the fixing cap 56 is larger than the inner diameter of the rotating sleeve 221, and the bottom of the fixing cap is provided with an external thread matched with the internal thread.

Specifically, the rotating sleeve 221 is provided with a bearing 222 therein, so that resistance during rotation can be reduced.

The bottom of the supporting column 21 is provided with a roller 213 shaft 212, and the roller 213 shaft 212 is provided with a roller 213 matched with the roller. The rolling shaft can be internally provided with a bearing.

Specifically, the shaft 212 of the roller 213 and the roller 213 are fixed by a clip 214. The roller 213 is prevented from being disengaged from the roller 213 shaft 212.

Specifically, the roller 213 shaft 212 includes a vertical shaft connected to the support column 21 and a horizontal shaft connected to the roller 213, the two ends of the horizontal shaft are provided with a slot along the circumferential direction of the horizontal shaft, and the clip spring 214 is provided in the slot.

In the present embodiment, the lifting unit 3 includes a hydraulic cylinder, but may be of another structure capable of achieving a lifting function.

When the lifting device works, a heavy object is lifted by the lifting arm part 1, the supporting column 21 is pushed, the supporting column 21 slides to the other side from one side along the sliding groove, the pull rod 22 rotates around the fixed shaft 55, the supporting column 21 and the pull rod 22 rotate to the other side simultaneously, the lifting part 3 is used for putting down the lifting arm part 1, the heavy object is unloaded, and then the transportation of goods can be completed.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A rotary crane is characterized in that: the method comprises the following steps:

a boom portion;

2. The rotary crane of claim 1, wherein: one end of the pull rod is connected with the middle part of the support column, and the other end of the pull rod is rotationally connected with the fixed shaft through the rotating sleeve.

3. The rotary crane of claim 1, wherein: and a fixing mechanism is also arranged between the base and the support column.

4. The rotary crane of claim 1, wherein: the base comprises an upper plate and a lower plate which are arranged up and down, the upper plate comprises an inner plate and an outer plate which are arranged on the same horizontal plane, the inner plate is an annular plate taking a fixed shaft as a circle center, and the inner diameter of the outer plate is larger than the outer diameter of the inner plate; and annular vertical plates are respectively arranged between the inner plate and the lower plate and between the outer plate and the lower plate to form the sliding groove.

5. The rotary crane of claim 4, wherein: the intersection of the vertical plate and the inner plate is close to the outer edge of the inner plate, and the intersection of the vertical plate and the outer plate is close to the inner edge of the outer plate.

6. The rotary crane of claim 4, wherein: the two vertical plates are provided with an opening along the radial direction of the base.

7. The rotary crane of claim 1, wherein: the mutual connection part of the support and the folding legs is provided with a groove which forms a part of the sliding groove.

8. The rotary crane of claim 8, wherein: when the suspension arm part is horizontally loaded and the supporting column part and the folding leg are in the same vertical plane, the distance from the load end of the suspension arm part to the lifting part is larger than the distance from the folding leg to the lifting part.

9. The rotary crane of claim 1, wherein: the rotating sleeve and the fixed shaft are fixed through a fixed cap, the fixed shaft is of a cylindrical structure, and internal threads are arranged on the inner wall of the fixed shaft; the diameter of the top of the fixed cap is larger than the inner diameter of the rotating sleeve, and the bottom of the fixed cap is provided with an external thread matched with the internal thread.

10. The rotary crane of claim 1, wherein: and the bottom of the support column is provided with a roller shaft, and the roller shaft is provided with a roller matched with the roller shaft.