New Retractable Boom Rope Structure for Crane

Abstract

The present invention discloses a novel retractable boom rope structure for a crane. The novel retractable boom rope structure for a crane includes a first boom section, a second boom section, a third boom section, two retractable boom pulley devices, and a retractable boom rope. The second boom section is installed inside the first boom section, the third boom section is installed inside the second boom section. The two retractable boom pulley devices are symmetrically arranged on one side of the second boom section close to the tail. The retractable boom rope is arranged on the first boom section, the two retractable boom pulley devices, and the third boom section. The overall structure of this novel retractable boom rope structure for a crane is compact, does not occupy the space at the tail of the boom section, and has a high utilization rate of the boom section length, thereby ensuring that a longer elongation can be obtained at the same fully retracted length.

Description

Technical Field

[0001] The present invention belongs to the technical field of telescopic booms of cranes, and particularly relates to a novel retracting boom rope structure for a crane. Background Art

[0002] The telescopic boom is an indispensable working structure on a crane. By telescoping the telescopic boom, a greater lifting radius and lifting height can be achieved. In the synchronous telescoping mechanism of a traditional telescopic boom, as Figure 1 shown, the retracting boom wheel 100 and the retracting boom rope 200 are mostly arranged at the tail of the boom cylinder 300, resulting in a large size of the boom tail structure, seriously affecting the utilization rate of the length of the boom cylinder and causing waste of resources. Summary of the Invention

[0003] To at least partially solve the technical problems existing in the above-mentioned prior art, the present invention provides a novel retracting boom rope structure for a crane.

[0004] The novel retracting boom rope structure for a crane of the present invention includes a first boom, a second boom, a third boom, two retracting boom wheel devices, and a retracting boom rope. The second boom is installed inside the first boom, the third boom is installed inside the second boom, the two retracting boom wheel devices are symmetrically arranged on one side of the second boom close to the tail, and the retracting boom rope is arranged on the first boom, the two retracting boom wheel devices, and the third boom, wherein:

[0005] The retracting boom wheel device includes a retracting boom wheel, a bearing, an anti-rotation shaft, a baffle, and a bushing. The bearing is arranged on the anti-rotation shaft, the retracting boom wheel is arranged on the bearing, the baffle is arranged on the top of the bearing, and the bushing is arranged on the bottom of the bearing;

[0006] An installation hole is provided on the second boom, the anti-rotation shaft passes through the installation hole, the bushing and the bearing are sequentially sleeved on the anti-rotation shaft, one end of the bushing abuts against the outer side of the second boom, and the other end of the bushing abuts against the inner ring of the bearing.

[0007] Further, in the above novel retracting boom rope structure for a crane, the distance between the first boom and the second boom matches the thickness of the retracting boom wheel device.

[0008] Further, in the above novel retracting boom rope structure for a crane, the top of the anti-rotation shaft is rectangular, and the installation hole matches the top of the anti-rotation shaft.

[0009] Further, in the above novel retracting boom rope structure for a crane, the top of the anti-rotation shaft is fitted with the installation hole, and the bushing and the bearing both match the bottom of the anti-rotation shaft.

[0010] Further, in the above-mentioned novel retractable boom rope structure for a crane, the diameter of the baffle is equal to the inner diameter of the bearing, the baffle abuts against the inner ring of the bearing, and the middle part of the baffle is fixedly connected to the anti-rotation shaft through bolts.

[0011] Further, in the above-mentioned novel retractable boom rope structure for a crane, the inner ring of the retractable boom wheel is matched with the outer ring of the bearing, and the retractable boom wheel is in transitional fit with the bearing.

[0012] Further, in the above-mentioned novel retractable boom rope structure for a crane, a connection platform is provided at the top of the first boom section, and a shaft hole is provided at the top of the third boom section.

[0013] Further, in the above-mentioned novel retractable boom rope structure for a crane, one end of the retractable boom rope is fixedly connected to the connection platform through a screw, the middle part of the retractable boom rope is wound around the retractable boom wheel, and the other end of the retractable boom rope is connected to the shaft hole through a pin shaft.

[0014] The novel retractable boom rope structure for a crane of the present invention has the following advantages and beneficial effects:

[0015] In summary, compared with the prior art, the novel retractable boom rope structure for a crane of the present invention has the following advantages and beneficial effects: The retractable boom wheel and the retractable boom rope are arranged above the boom section, without occupying the space at the tail of the boom section, so that the utilization rate of the boom length is higher, and a longer extension amount can be obtained at the same fully retracted length. The fixed structure of the retractable boom wheel is compact, thus effectively saving space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts. In the drawings:

[0017] Figure 1 is a schematic structural diagram of a retractable boom rope in the prior art;

[0018] Figure 2 is an overall schematic diagram of the novel retractable boom rope structure for a crane of the present invention;

[0019] Figure 3 is a schematic cross-sectional structure diagram of the novel retractable boom rope structure for a crane of the present invention;

[0020] Figure 4 is a schematic structural diagram of the retractable boom wheel device of the novel retractable boom rope structure for a crane of the present invention;

[0021] Figure 5 Schematic diagram of the anti-rotation shaft structure of the new retractable boom rope structure for the crane of the present invention, where (a) is the front view of the anti-rotation shaft; (b) is the bottom view of the anti-rotation shaft.

[0022] Explanation of the reference numerals in the drawings:

[0023] 100: Retractable boom wheel, 200: Retractable boom rope, 300: Boom cylinder;

[0024] 1: First boom section, 11: Connection platform;

[0025] 2: Second boom section, 21: Mounting hole;

[0026] 3: Third boom section, 31: Shaft hole;

[0027] 4: Retractable boom wheel device, 41: Retractable boom wheel, 42: Bearing, 43: Anti-rotation shaft, 44: Baffle, 45: Bush;

[0028] 5: Retractable boom rope. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0030] As Figures 2 to 5 shown, the new retractable boom rope structure for the crane of the present invention includes a first boom section 1, a second boom section 2, a third boom section 3, two retractable boom wheel devices 4 and a retractable boom rope 5. The second boom section 2 is installed inside the first boom section 1, the third boom section 3 is installed inside the second boom section 2, the two retractable boom wheel devices 4 are symmetrically arranged on one side of the second boom section 2 close to the tail, and the retractable boom rope 5 is arranged on the first boom section 1, the two retractable boom wheel devices 4 and the third boom section 3. Among them:

[0031] The retractable boom wheel device 4 includes a retractable boom wheel 41, a bearing 42, an anti-rotation shaft 43, a baffle 44 and a bush 45. The bearing 42 is arranged on the anti-rotation shaft 43, the retractable boom wheel 41 is arranged on the bearing 42, the baffle 44 is arranged on the top of the bearing 42, and the bush 45 is arranged on the bottom of the bearing 42.

[0032] Furthermore, in the above-mentioned new retractable boom rope structure for the crane, the distance between the first boom section 1 and the second boom section 2 matches the thickness of the retractable boom wheel device 4, so as to effectively ensure that the retractable boom wheel device 4 has enough space for installation.

[0033] Furthermore, in the above-mentioned novel telescopic boom rope structure for a crane, a mounting hole 21 is provided on the second boom 2. The top of the anti-rotation shaft 43 is rectangular, and the mounting hole 21 matches the top of the anti-rotation shaft 43, effectively preventing the anti-rotation shaft 43 from rotating.

[0034] Furthermore, in the above-mentioned novel telescopic boom rope structure for a crane, the anti-rotation shaft 43 passes through the mounting hole 21, and the top of the anti-rotation shaft 43 is fitted with the mounting hole 21. Both the shaft sleeve 45 and the bearing 42 match the bottom of the anti-rotation shaft 43. The shaft sleeve 45 and the bearing 42 are sequentially sleeved on the anti-rotation shaft 43. One end of the shaft sleeve 45 abuts against the outer side of the second boom 2, and the other end of the shaft sleeve 45 abuts against the inner ring of the bearing 42.

[0035] Furthermore, in the above-mentioned novel telescopic boom rope structure for a crane, the diameter of the baffle 44 is equal to the inner diameter of the bearing 42. The baffle 44 abuts against the inner ring of the bearing 42. The middle of the baffle 44 is fixedly connected to the anti-rotation shaft 43 by bolts. The bearing 42 is axially positioned by the clamping of the baffle 44 and the shaft sleeve 45, ensuring the smooth operation of the bearing 42.

[0036] Furthermore, in the above-mentioned novel telescopic boom rope structure for a crane, the inner ring of the telescopic boom wheel 41 matches the outer ring of the bearing 42, and the telescopic boom wheel 41 is in transitional fit with the bearing 42, thus ensuring that the telescopic boom wheel 41 rotates more flexibly and is more convenient to maintain.

[0037] Furthermore, in the above-mentioned novel telescopic boom rope structure for a crane, a connecting platform 11 is provided at the top of the first boom 1, and a shaft hole 31 is provided at the top of the third boom 3.

[0038] Furthermore, in the above-mentioned novel telescopic boom rope structure for a crane, one end of the telescopic boom rope 5 is fixedly connected to the connecting platform 11 by a screw. The middle of the telescopic boom rope 5 is wound around the telescopic boom wheel 41. The other end of the telescopic boom rope 5 is connected to the shaft hole 31 by a pin shaft, effectively ensuring that the second boom 2 and the third boom 3 can be fully telescoped, thereby increasing the elongation and the utilization rate of the boom sections.

[0039] Specifically, the telescopic boom wheel 41 is installed on one side of the second boom 2 through the distance between the first boom 1 and the second boom 2, so that the telescopic boom wheel device 4 does not occupy the tail space, thereby increasing the elongation of the second boom 2 and the third boom 3. When working, when the third boom 3 extends, the second boom 2 extends synchronously through the cooperation of the telescopic boom rope 5 and the telescopic boom wheel 41. At the same time, the telescopic boom wheel 41 rotates more flexibly through the cooperation of the bearing 42. The top of the anti-rotation shaft 43 ensures that the anti-rotation shaft 43 does not rotate when the bearing 42 installed on the anti-rotation shaft 43 rotates through the cooperation with the mounting hole 21. The bearing 42 is axially fixed by the clamping of the shaft sleeve 45 and the baffle 44, thereby ensuring that the telescopic boom wheel 41 rotates more smoothly. The overall structure of the telescopic boom wheel device 4 is compact and convenient for installation.

[0040] In summary, compared with the prior art, the novel retractable boom rope structure for a crane of the present invention has the following advantages and beneficial effects: The retractable boom pulley and the retractable boom rope are arranged above the telescopic boom, without occupying the space at the tail of the telescopic boom, so that the utilization rate of the telescopic boom length is higher, and a longer extension can be obtained at the same fully retracted length. The fixed structure of the retractable boom pulley is compact, thus effectively saving space.

[0041] It should be noted that in this article, unless otherwise clearly specified and defined, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific situations. Moreover, expressions such as "first" and "second" 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. At the same time, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. In addition, in this article, "front", "rear", "left", "right", "upper" and "lower" are all referenced with the placement state shown in the drawings.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A novel retractable boom rope structure for a crane, characterized in that The novel telescopic boom rope structure for a crane includes a first boom section, a second boom section, a third boom section, two telescopic boom wheel devices, and a telescopic boom rope. The second boom section is installed inside the first boom section, the third boom section is installed inside the second boom section, the two telescopic boom wheel devices are symmetrically arranged on one side of the second boom section near the tail, and the telescopic boom rope is arranged on the first boom section, the two telescopic boom wheel devices, and the third boom section, where: The telescopic boom wheel device includes a telescopic boom wheel, a bearing, an anti-rotation shaft, a baffle, and a bushing. The bearing is arranged on the anti-rotation shaft, the telescopic boom wheel is arranged on the bearing, the baffle is arranged on the top of the bearing, and the bushing is arranged on the bottom of the bearing; An installation hole is provided on the second boom section. The anti-rotation shaft passes through the installation hole, and the bushing and the bearing are sequentially sleeved on the anti-rotation shaft. One end of the bushing abuts against the outer side of the second boom section, and the other end of the bushing abuts against the inner ring of the bearing.

2. The novel telescopic boom rope structure for a crane according to claim 1, wherein, The distance between the first boom section and the second boom section matches the thickness of the telescopic boom wheel device.

3. The novel telescopic boom rope structure for a crane according to claim 1, characterized in that, The top of the anti-rotation shaft is rectangular, and the installation hole matches the top of the anti-rotation shaft.

4. The novel telescopic boom rope structure for a crane according to claim 3, characterized in that, The top of the anti-rotation shaft is fitted with the installation hole, and the bushing and the bearing both match the bottom of the anti-rotation shaft.

5. The novel telescopic boom rope structure for a crane according to claim 4, characterized in that, The diameter of the baffle is equal to the inner diameter of the bearing. The baffle abuts against the inner ring of the bearing, and the middle of the baffle is fixedly connected to the anti-rotation shaft by bolts.

6. The novel telescopic boom rope structure for a crane according to claim 1, characterized in that, The inner ring of the telescopic boom wheel matches the outer ring of the bearing, and the telescopic boom wheel and the bearing are in transitional fit.

7. The novel telescopic boom rope structure for a crane according to claim 1, characterized in that, A connection platform is provided at the top of the first boom section, and a shaft hole is provided at the top of the third boom section.

8. The novel telescopic boom rope structure for a crane according to claim 7, characterized in that, One end of the telescopic boom rope is fixedly connected to the connection platform by a screw, the middle of the telescopic boom rope is wound around the telescopic boom wheel, and the other end of the telescopic boom rope is connected to the shaft hole by a pin shaft.

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