Jib device for luffing jib tower crane, hoisting rope winding method for luffing jib tower crane, and luffing jib tower crane

Abstract

A jib device for a luffing jib tower crane. The jib device comprises a jib frame (100) and a rope winding pulley assembly. A jib heel of the jib frame (100) is arranged on an upper support (800) of the luffing jib tower crane to be capable of implementing pitching and luffing. A jib tip guide pulley (500) of the rope winding pulley assembly is arranged at a jib tip of the jib frame (100). A rope inlet guide pulley (300) is arranged on the upper side of the jib frame (100) and is arranged away from the jib heel, and a rope outlet guide pulley (400) is arranged in the jib frame (100) and located on the side of the rope inlet guide pulley (300) facing away from the jib tip, so that a free end of a hoisting rope (202) wound on a hoisting drum (201) of a counter balance jib frame (900) sequentially passes through the rope inlet guide pulley (300), the rope outlet guide pulley (400) and the jib tip guide pulley (500) and is then connected to a hoisting hook. Also provided are a luffing jib tower crane comprising said jib device, and a hoisting rope winding method for a luffing jib tower crane. The whole rope winding pulley assembly is completely arranged on the jib frame, thereby achieving the objective of reducing the A-shaped frame manufacturing difficulty, the rope winding complexity and the maintenance and protection difficulty.

Description

Lifting arm device for boom tower crane, hoisting rope winding method and boom tower crane

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on June 20, 2023, with application number 202310739930.8 and invention name “Crane arm device for boom tower crane, hoisting rope winding method and boom tower crane”, the entire contents of which are incorporated by reference into the application. Technical Field

[0002] The present application belongs to the technical field of luffing-arm tower cranes, and specifically relates to a lifting arm device for a luffing-arm tower crane, a hoisting rope winding method, and a luffing-arm tower crane. Background Art

[0003] A luffing jib tower crane is a revolving crane with a boom mounted on top of a tall tower. It has a large working area and is primarily used for vertical and horizontal material transportation and the installation of building components during building construction.

[0004] As shown in Figure 1, the hoisting rope of a boom tower crane is typically wound by running the rope 01 upward from the hoist drum 02, through the rope arranging pulley 04 on the A-frame 03, then downward through the guide pulley 06 on the boom 05, where it is diverted to reach the boom tip guide pulley 07 and ultimately connected to the hook 08. This rope winding method requires the installation of a rope arranging pulley assembly on the A-frame. However, the high installation height of the rope arranging pulley assembly on the A-frame increases the manufacturing difficulty of the A-frame, as well as the complexity of the rope winding and the difficulty of maintenance. Technical Solutions

[0005] In response to the above-mentioned defects or shortcomings, the present application provides a lifting arm device for a boom tower crane, a lifting rope winding method and a boom tower crane, aiming to solve the technical problems of increasing the manufacturing difficulty of the A-frame, the complexity of winding and the difficulty of maintenance due to the provision of a rope wheel assembly on the A-frame.

[0006] To achieve the above-mentioned purpose, the present application provides a boom device for a boom tower crane, wherein the boom device for the boom tower crane includes a boom frame and a rope winding pulley assembly; the boom root end of the boom frame is arranged on the upper support of the boom tower crane in a pitch-variable manner; the rope winding pulley assembly includes a rope feed guide wheel, a rope outlet guide wheel and a boom tip guide wheel, the boom tip guide wheel is arranged at the boom tip of the boom frame, the rope feed guide wheel is arranged on the upper side of the boom frame and away from the boom root end, and the rope outlet guide wheel is arranged inside the boom frame and on the side of the rope feed guide wheel away from the boom tip, so that the free end of the lifting rope wound on the lifting drum of the balance boom frame passes through the rope feed guide wheel, the rope outlet guide wheel and the boom tip guide wheel in sequence and is connected to the hook.

[0007] In the embodiment of the present application, the distance between the rope guide wheel and the hoisting drum is Wherein, B is the width of the lifting drum; α is the preset tilt angle.

[0008] In an embodiment of the present application, the boom device also includes a first mounting assembly, which includes two first clamping plates relatively spaced apart and arranged on the upper side of the boom frame, and a first mounting shaft passing through the two first clamping plates. The rope feed guide wheel is clamped between the two first clamping plates and rotatably mounted on the first mounting shaft, so that the free end of the lifting rope can pass through the rope feed guide wheel between the two first clamping plates and enter the interior of the boom frame.

[0009] In an embodiment of the present application, the lifting boom is a triangular boom, and the first main chord of the triangular boom is arranged upward, including a first rod segment and a second rod segment. The first rod segment and the second rod segment are disconnected to form a gap portion, and two first clamping plates are arranged on both sides of the first main chord corresponding to the gap portion, and both ends are respectively connected to the first rod segment and the second rod segment one by one, and the rope feed guide wheel is installed on the two first clamping plates in the gap portion through the first mounting shaft.

[0010] In an embodiment of the present application, the boom device also includes a second mounting assembly, which includes two second clamping plates relatively spaced apart inside the boom frame and a second mounting shaft passing through the two second clamping plates. The rope outlet guide wheel is clamped between the two second clamping plates and rotatably mounted on the second mounting shaft, so that the free end of the lifting rope passes around the rope outlet guide wheel between the two second clamping plates and extends to the arm tip guide wheel.

[0011] In an embodiment of the present application, a first transverse web and a second transverse web arranged relatively spaced apart are connected between the second main chord and the third main chord arranged downwardly of the boom, and two second clamping plates are arranged relatively spaced apart in the middle of the first transverse web. The second mounting assembly also includes two third clamping plates arranged obliquely, and the first ends of the two third clamping plates are arranged relatively spaced apart in the middle of the second transverse web, and the second ends are arranged one-to-one on the outer sides of the upper ends of the two second clamping plates. The rope guide wheel is placed between the two second clamping plates and is connected in series with the two second clamping plates and the two third clamping plates through a second mounting axis.

[0012] In an embodiment of the present application, the arm tip guide wheel is arranged on the first side of the arm tip toward the lifting boom, the rope feed guide wheel is arranged centered on the upper side of the lifting boom along the width direction, and the rope outlet guide wheel is located between the arm tip guide wheel and the rope feed guide wheel in the width direction.

[0013] In an embodiment of the present application, the boom device also includes a first rope supporting assembly, which is arranged on the upper side of the boom frame and on the side of the rope feed guide wheel away from the arm tip, so as to carry the lifting rope between the lifting drum and the rope feed guide wheel.

[0014] In an embodiment of the present application, the first rope supporting assembly includes a mounting frame, a first rope supporting roller, a first connecting plate and a threaded connector. The first rope supporting roller is rotatably disposed on the mounting frame and is used to carry the lifting rope. The mounting frame is provided with a second connecting plate on the lower side of the first rope supporting roller, and the second connecting plate is located on the outer side of the upward-facing mounting rod section of the lifting boom. The first connecting plate is located on the inner side of the mounting rod section and is connected to the second connecting plate across the mounting rod section through a threaded connector.

[0015] In an embodiment of the present application, the boom device also includes a second rope supporting assembly arranged inside the boom frame and located between the rope outlet guide wheel and the arm tip guide wheel. The second rope supporting assembly includes two mounting vertical plates and two second rope supporting rollers. The two mounting vertical plates are arranged on the boom frame with relative intervals. The two second rope supporting rollers are spaced apart up and down and are respectively rotatably arranged between the two mounting vertical plates, so that the free end of the lifting rope extends from between the two second rope supporting rollers to the arm tip guide wheel.

[0016] To achieve the above-mentioned object, the present application further provides a method for winding a hoisting rope for a boom tower crane, wherein the hoisting rope winding method adopts the boom device for the boom tower crane as described above, and comprises:

[0017] After the free end of the lifting rope on the lifting drum is passed around the rope inlet guide wheel away from the side of the arm root end, it is extended in the reverse direction toward the rope outlet guide wheel and after passing around the rope outlet guide wheel away from the side of the arm tip, it continues to extend in the reverse direction toward the arm tip guide wheel and is connected to the hook.

[0018] To achieve the above-mentioned purpose, the present application also provides a luffing jib tower crane, wherein the luffing jib tower crane includes the lifting arm device for the luffing jib tower crane as described above. Beneficial effects

[0019] When the above-mentioned boom crane device is used, since the rope winding pulley assembly includes a rope feed guide wheel, a rope outlet guide wheel and a boom tip guide wheel, the boom tip guide wheel is arranged at the boom tip of the boom, the rope feed guide wheel is arranged on the upper side of the boom and away from the boom root end, the rope outlet guide wheel is arranged inside the boom and is located on the side of the rope feed guide wheel away from the boom tip, the lifting rope is wound around the lifting drum and the free end is sequentially passed around the rope feed guide wheel, the rope outlet guide wheel and the boom tip guide wheel and connected to the hook, thereby realizing the winding of the lifting rope. Compared with the technical solution in the prior art that requires a rope arrangement pulley assembly to be arranged on the A-frame, the present application arranges the entire rope winding pulley assembly on the boom, which obviously achieves the purpose of reducing the manufacturing difficulty of the A-frame, the complexity of rope winding and the difficulty of maintenance and protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to facilitate understanding of the present application and constitute a part of the specification. Together with the following detailed description, they are used to explain the present application but do not limit the present application. In the accompanying drawings: FIG1 is a schematic diagram of the rope winding structure of a boom tower crane in the background art;

[0021] FIG2 is a schematic structural diagram of a boom device according to an embodiment of the present application;

[0022] FIG3 is a schematic diagram of the inclination angle of the hoisting rope between the hoisting drum and the rope feed guide wheel according to one embodiment of the present application;

[0023] FIG4 is a schematic diagram of a partial structure of a boom device according to an embodiment of the present application;

[0024] FIG5 is a schematic structural diagram of a boom device according to one embodiment of the present application from one perspective;

[0025] FIG6 is a schematic diagram of a portion of the structure of a boom device from another perspective according to an embodiment of the present application;

[0026] FIG7 is a schematic structural diagram of a first supporting rope assembly according to an embodiment of the present application;

[0027] FIG8 is a schematic structural diagram of a second supporting rope assembly according to an embodiment of the present application.

[0028] BACKGROUND ART DESCRIPTION OF REFERENCE NUMERALS

[0029] Description of the Figures in the Examples of the Application DETAILED DESCRIPTION

[0030] The following is a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0031] The following describes a boom device for a boom tower crane, a hoisting rope winding method, and a boom tower crane of the present application with reference to the accompanying drawings.

[0032] As shown in FIG2 , the present application provides a boom device for a boom tower crane, wherein the boom device for a boom tower crane comprises:

[0033] A lifting jib 100, the base end of which is mounted on an upper support 800 of a boom tower crane in a manner capable of varying the height of the lifting jib;

[0034] The rope winding pulley assembly includes a rope feed guide wheel 300, a rope outlet guide wheel 400 and an arm tip guide wheel 500. The arm tip guide wheel 500 is arranged at the arm tip of the lifting boom 100, the rope feed guide wheel 300 is arranged on the upper side of the lifting boom 100 and away from the arm root end, and the rope outlet guide wheel 400 is arranged inside the lifting boom 100 and on the side of the rope feed guide wheel 300 away from the arm tip, so that the free end of the lifting rope 202 wound on the lifting drum 201 of the balancing boom 900 passes through the rope feed guide wheel 300, the rope outlet guide wheel 400 and the arm tip guide wheel 500 in sequence and is connected to the hook.

[0035] When the above-mentioned boom crane device is used, since the rope winding pulley assembly includes a rope inlet guide wheel 300, a rope outlet guide wheel 400 and a boom tip guide wheel 500, the boom tip guide wheel 500 is arranged at the boom tip of the boom 100, the rope inlet guide wheel 300 is arranged on the upper side of the boom 100 and away from the boom root end, the rope outlet guide wheel 400 is arranged inside the boom 100 and is located on the side of the rope inlet guide wheel 300 away from the boom tip, the hoisting rope 202 is wound around The free end of the lifting drum 201 is connected to the hook by passing through the rope inlet guide wheel 300, the rope outlet guide wheel 400 and the arm tip guide wheel 500 in sequence, so that the rope winding of the lifting rope 202 can be realized. Compared with the technical solution in the prior art that requires a rope arrangement wheel assembly to be arranged on the A-frame, the present application arranges the entire rope winding pulley assembly on the lifting boom 100, which obviously achieves the purpose of reducing the manufacturing difficulty of the A-frame, the complexity of rope winding and the difficulty of maintenance and protection.

[0036] In the embodiment of the present application, the distance between the rope guide wheel 300 and the hoisting drum 201 is Where B is the width of the hoist drum 201, and α is the preset inclination angle. Limiting the distance between the rope feed guide wheel 300 and the hoist drum 201 is equivalent to limiting the installation position of the rope feed guide wheel 300 on the boom 100. The above distance formula ensures that the rope feed inclination angle between the hoist drum 201 and the rope feed guide wheel 300 always remains within the preset inclination angle α, even without the rope feed guide wheel 300 sliding left or right.

[0037] It is important to note that the rope pulley assembly of the prior art is slidably mounted on the pulley shaft. Due to issues such as manufacturing precision, installation quality, and lubrication, the pulley often exhibits problems such as stiff sliding and insufficient pulley travel, which can easily lead to rope tangling on the hoisting mechanism's drum. Furthermore, once rope tangling occurs, the only solution to improve the rope tangling is to replace the pulley or shaft, significantly impacting construction efficiency.

[0038] The reason is that in order to ensure that the deflection angle of the lifting rope between the lifting drum and the rope arranging wheel is within the specified range during the rope arranging process, the rope arranging wheel needs to be slidable left and right on the rope arranging wheel shaft, so that when the lifting rope changes position on the lifting drum, the rope arranging wheel can also ensure that the deflection angle of the lifting rope is within the specified range by sliding left and right. However, the left and right sliding of the rope arranging wheel can easily disturb the lifting rope on the lifting drum, causing rope tangling.

[0039] Specifically, the lifting mechanism 200 includes a lifting drum 201 and a lifting rope 202. The lifting drum 201 is arranged on a balancing arm 900 connected to the slewing mechanism 800, and the lifting rope 202 is wound on the lifting drum 201. The rope feed guide wheel 300 is arranged away from the root end of the arm. Since the length of the lifting arm 100 is significantly greater than the height of the A-frame, the length of the lifting rope 202 between the lifting drum 201 and the rope feed guide wheel 300 can be significantly increased compared with the length of the lifting rope 202 between the lifting drum 201 and the rope arrangement wheel on the A-frame in the prior art. When the rope winding length on the lifting drum 201 is constant, the rope feed guide wheel 300 in this application does not need to slide left and right to ensure that the rope feeding angle is within the specified range, thereby avoiding the rope tangling phenomenon of the lifting mechanism 200 due to left and right sliding, thereby achieving the purpose of improving the rope arrangement effect and improving construction efficiency.

[0040] 2 and 4 , in the embodiment of the present application, the boom device further includes a first mounting assembly, which includes two first clamping plates 301 spaced apart and arranged on the upper side of the boom frame 100, and a first mounting shaft passing through the two first clamping plates 301. The rope feed guide pulley 300 is clamped between the two first clamping plates 301 and rotatably sleeved on the first mounting shaft, so that the free end of the hoisting rope 202 passes between the two first clamping plates 301 and around the rope feed guide pulley 300 into the interior of the boom frame 100. That is, the rope feed guide pulley 300 is clamped between the two first clamping plates 301 and rotates. The two first clamping plates 301 limit the sliding of the rope feed guide pulley 300 in the left and right directions. A gap is also formed between the two first clamping plates 301 for the hoisting rope 202 to extend into the interior of the boom frame 100, so that it can extend in the opposite direction toward the rope outlet guide pulley 400. Specifically, the two first clamping plates 301 are both extended along the length direction of the boom 100 so that the lifting rope 202 is guided along the upper side of the boom 100 and wound around the rope feed guide wheel 300 .

[0041] In the embodiment of the present application, the boom 100 may be a triangular boom, wherein the first main chord 101 of the triangular boom is upwardly arranged and includes a first rod segment 104 and a second rod segment 105. The first rod segment 104 and the second rod segment 105 are disconnected to form a gap 106. Two first clamping plates 301 are respectively arranged on both sides of the first main chord 101 corresponding to the gap 106, and both ends are respectively connected to the first rod segment 104 and the second rod segment 105 in a one-to-one correspondence. The rope feed guide wheel 300 is mounted on the two first clamping plates 301 in the gap 106 via a first mounting shaft. That is, the first main chord 101 can be disconnected to form a gap between the first rod segment 104 and the second rod segment 105 for the first mounting assembly to be mounted. The first mounting assembly becomes a part of the first main chord 101, thereby allowing the rope feed guide wheel 300 to be perfectly integrated into the first main chord 101 and located in the middle of the boom 100 in the width direction. Of course, the present application is not limited thereto, and the lifting boom 100 may also be a square boom, in which case both ends of the two first clamping plates 301 may be connected one-to-one with the two transverse webs on the upper side of the square boom.

[0042] Referring again to Figures 2 and 4, in this embodiment of the present application, the boom assembly further includes a second mounting assembly, comprising two second clamping plates 401 relatively spaced apart within the boom frame 100, and a second mounting shaft 402 extending through the two second clamping plates 401. A rope guide pulley 400 is clamped between the two second clamping plates 401 and rotatably sleeved on the second mounting shaft 402, allowing the free end of the hoisting rope 202 to pass between the two second clamping plates 401 and extend toward the boom tip guide pulley 500. Specifically, the rope guide pulley 400 can be clamped and rotated between the two second clamping plates 401, and the two second clamping plates 401 restrict the rope guide pulley 400 from sliding in the left-right direction, further preventing rope tangling caused by sliding. Furthermore, a gap is formed between the two second clamping plates 401 for the hoisting rope 202 to extend in the opposite direction toward the boom tip guide pulley 500.

[0043] In the embodiment of the present application, a first transverse web 107 and a second transverse web 108 are connected between the second main chord 102 and the third main chord 103, which are arranged downwardly, of the boom 100. Two second clamping plates 401 are arranged at a relatively interval in the middle of the first transverse web 107. The second mounting assembly also includes two third clamping plates 403 arranged at an angle. The first ends of the two third clamping plates 403 are arranged at a relatively interval in the middle of the second transverse web 108, and the second ends are respectively arranged on the outer sides of the upper ends of the two second clamping plates 401. The rope guide wheel 400 is placed between the two second clamping plates 401 and is connected in series with the two second clamping plates 401 and the two third clamping plates 403 through the second mounting shaft 402. The addition of the two third clamping plates 403 can strengthen the installation of the rope guide wheel 400 and further improve the stability and service life of the rope guide wheel 400.

[0044] As shown in Figures 4 and 6, in an embodiment of the present application, the arm tip guide wheel 500 is arranged at the first side of the arm tip toward the lifting boom 100, the rope feed guide wheel 300 is centered on the upper side of the lifting boom 100 along the width direction, and the rope outlet guide wheel 400 is located between the arm tip guide wheel 500 and the rope feed guide wheel 300 in the width direction, thereby ensuring that the inclination angle of the lifting rope 202 between the rope feed guide wheel 300 and the rope outlet guide wheel 400 is within the specified range, and ensuring that the inclination angle of the lifting rope 202 between the rope outlet guide wheel 400 and the arm tip guide wheel 500 is within the specified range. Specifically, the lifting boom 100 is a triangular boom, the rope inlet guide wheel 300 is arranged on the first main chord 101 of the triangular boom facing the lifting drum 201, the second main chord 102 and the third main chord 103 of the triangular boom are arranged back to the lifting drum 201, the arm tip guide wheel 500 is arranged at the tip of the arm toward the second main chord 102, and the rope outlet guide wheel 400 is located between the arm tip guide wheel 500 and the midpoint of the transverse web connecting the second main chord 102 and the third main chord 103.

[0045] 5 and 7 , in the embodiment of the present application, the boom device further includes a first rope supporting assembly 600. The first rope supporting assembly 600 is disposed on the upper side of the boom 100 and on the side of the rope feed guide wheel 300 away from the boom tip, so as to support the hoisting rope 202 between the hoisting drum 201 and the rope feed guide wheel 300, thereby preventing the hoisting rope 202 between the hoisting drum 201 and the rope feed guide wheel 300 from causing wear on the boom 100. Specifically, the number of the first rope supporting assemblies 600 may be at least two, and the at least two first rope supporting assemblies 600 are sequentially spaced apart and disposed between the boom root end of the boom 100 and the rope feed guide wheel 300.

[0046] In an embodiment of the present application, the first rope supporting assembly 600 includes a mounting frame 601, a first rope supporting roller 602, a first connecting plate 603 and a threaded connector 604. The first rope supporting roller 602 is rotatably provided on the mounting frame 601 and is used to carry the lifting rope 202. The mounting frame 601 is provided with a second connecting plate 605 on the lower side of the first rope supporting roller 602, and the second connecting plate 605 is located on the outer side of the upward-facing mounting rod section of the lifting boom 100. Specifically, when the lifting boom 100 is a triangular boom, the mounting rod section can be the upward-facing first main chord 101. When the lifting boom 100 is a square boom, the mounting rod section can be a web bar newly added to the lifting boom 100. At the same time, the first connecting plate 603 is located on the inner side of the mounting rod section and is connected to the second connecting plate 605 by crossing the mounting rod section through the threaded connector 604. Thus, the first connecting plate 603 and the mounting frame 601 can be detachably connected on the lifting boom 100 by clamping, which is convenient for disassembly, assembly, maintenance and replacement.

[0047] Specifically, the mounting frame 601 includes two mounting vertical plates 606 arranged relatively spaced apart and a first roller shaft 607 connecting the two mounting vertical plates 606. A bearing is sleeved on the first roller shaft 607, and the first rope supporting roller 602 is sleeved on the bearing. The second connecting plate 605 is arranged on the lower side of the first rope supporting roller 602 and the two ends are respectively connected to the two mounting vertical plates 606 in a one-to-one correspondence. The first connecting plate 603 and the second connecting plate 605 are respectively provided with four connecting holes. The four connecting holes of the first connecting plate 603 and the second connecting plate 605 are respectively arranged in a square and are arranged in pairs on the outer side of the mounting rod section to form four connecting channels. The four threaded connectors 604 are respectively passed through the four connecting channels in a one-to-one correspondence.

[0048] Referring to Figures 5, 6 and 8, in an embodiment of the present application, the boom device also includes a second rope supporting assembly 700 arranged inside the boom frame 100 and located between the rope outlet guide wheel 400 and the arm tip guide wheel 500. The second rope supporting assembly 700 includes two mounting vertical plates 701 and two second rope supporting rollers 702. The two mounting vertical plates 701 are relatively spaced apart on the boom frame 100, and the two second rope supporting rollers 702 are spaced apart up and down and are respectively rotatably arranged between the two mounting vertical plates 701, so that the free end of the lifting rope 202 extends from between the two second rope supporting rollers 702 to the arm tip guide wheel 500. That is, the free end of the lifting rope 202 that passes by the rope outlet guide wheel 400 can pass through the second rope supporting assembly 700 and then guide to the arm tip guide wheel 500. The two mounting vertical plates 701 of the second rope supporting assembly 700 can limit the jumping of the lifting rope 202 in the left and right directions, and the two second rope supporting rollers 702 can limit the jumping of the lifting rope 202 in the up and down directions, thereby preventing the lifting rope 202 between the rope outlet guide wheel 400 and the arm tip guide wheel 500 from causing wear to the belly rod of the lifting boom 100.

[0049] In addition, the present application also provides a method for winding a hoisting rope for a boom tower crane, wherein the hoisting rope winding method adopts the boom device for the boom tower crane as described above and comprises:

[0050] After the free end of the lifting rope 202 on the lifting drum 201 is passed around the rope inlet guide wheel 300 away from the side of the arm root end, it is extended in the reverse direction toward the rope outlet guide wheel 400 and after passing around the rope outlet guide wheel 400 away from the side of the arm tip, it continues to extend in the reverse direction toward the arm tip guide wheel 500 and is connected to the hook.

[0051] Specifically, the hoisting rope 202 includes a drum section, a rope feed section, a reverse section, and a rope outlet section connected in sequence. The drum section is wound on the hoisting drum 201. The rope feed section is guided from the hoisting drum 201 to the rope feed guide wheel 300 and wound on the side of the rope feed guide wheel 300 that is away from the arm root end. The reverse section is guided from the side of the rope feed guide wheel 300 that is away from the hoisting drum 201 to the side of the rope outlet guide wheel 400 that is away from the arm tip guide wheel 500 and is wound thereon. The rope outlet section is guided from the side of the rope outlet guide wheel 400 that is away from the arm tip guide wheel 500 to the arm tip guide wheel 500 and is connected to the hook, thereby enabling the winding of the hoisting rope 202. Since the hoisting rope winding method adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described in detail here.

[0052] In addition, the present application also provides a luffing jib tower crane, wherein the luffing jib tower crane includes the above-mentioned luffing jib tower crane boom device. Since the luffing jib tower crane adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described in detail here.

[0053] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0054] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0056] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A boom device for a boom tower crane, wherein: The boom device for the boom tower crane comprises: A lifting jib (100), the base end of which is disposed on an upper support (800) so as to be able to pitch and luff; The rope winding pulley assembly comprises a rope inlet guide wheel (300), a rope outlet guide wheel (400) and a boom tip guide wheel (500), wherein the boom tip guide wheel (500) is arranged at the boom tip of the lifting boom (100), the rope inlet guide wheel (300) is arranged at the upper side of the lifting boom (100) and away from the boom root end, and the rope outlet guide wheel (400) is arranged inside the lifting boom (100) and located at a side of the rope inlet guide wheel (300) away from the boom tip, so that the free end of the lifting rope (202) wound on the lifting drum (201) of the balance boom (900) passes through the rope inlet guide wheel (300), the rope outlet guide wheel (400) and the boom tip guide wheel (500) in sequence and is connected to the hook.

2. The boom device for a boom tower crane according to claim 1, wherein: The distance between the rope feed guide wheel (300) and the hoisting drum (201) Wherein, B is the width of the lifting drum (201); α is the preset inclination angle.

3. The boom device for a boom tower crane according to claim 1, wherein: The boom device also includes a first mounting assembly, which includes two first clamping plates (301) relatively spaced apart on the upper side of the boom (100) and a first mounting shaft passing through the two first clamping plates (301); the rope feed guide wheel (300) is clamped between the two first clamping plates (301) and rotatably mounted on the first mounting shaft, so that the free end of the lifting rope (202) passes between the two first clamping plates (301) and around the rope feed guide wheel (300) to enter the interior of the boom (100).

4. The boom device for a boom tower crane according to claim 3, wherein: The lifting boom (100) is a triangular boom, and the first main chord (101) of the triangular boom is arranged upward and includes a first rod segment (104) and a second rod segment (105), the first rod segment (104) and the second rod segment (105) are disconnected to form a gap portion (106), and two first clamping plates (301) are arranged on both sides of the first main chord (101) corresponding to the gap portion (106), and both ends are respectively connected to the first rod segment (104) and the second rod segment (105) in a one-to-one correspondence, and the rope feed guide wheel (300) is installed on the two first clamping plates (301) in the gap portion (106) through the first installation shaft.

5. The boom device for a boom tower crane according to claim 1, wherein: The lifting arm device also includes a second mounting assembly, which includes two second clamping plates (401) relatively spaced apart inside the lifting arm frame (100) and a second mounting shaft (402) passing through the two second clamping plates (401); the rope output guide wheel (400) is clamped between the two second clamping plates (401) and rotatably mounted on the second mounting shaft (402), so that the free end of the lifting rope (202) passes through the rope output guide wheel (400) between the two second clamping plates (401) and extends toward the arm tip guide wheel (500).

6. The boom device for a boom tower crane according to claim 5, wherein: A first transverse web (107) and a second transverse web (108) which are relatively spaced apart are connected between the second main chord (102) and the third main chord (103) which are arranged downwardly of the lifting boom (100); two second clamping plates (401) are relatively spaced apart in the middle of the first transverse web (107); the second mounting assembly further comprises two third clamping plates (403) which are inclined; first ends of the two third clamping plates (403) are relatively spaced apart in the middle of the second transverse web (108); and second ends are respectively and one-to-one arranged on the outer sides of the upper ends of the two second clamping plates (401); the rope outlet guide wheel (400) is placed between the two second clamping plates (401) and is connected in series with the two second clamping plates (401) and the two third clamping plates (403) through the second mounting shaft (402).

7. The boom device for a boom tower crane according to claim 1, wherein: The arm tip guide wheel (500) is arranged at the first side of the arm tip which is biased toward the lifting boom (100), the rope feed guide wheel (300) is arranged in the center of the upper side of the lifting boom (100) along the width direction, and the rope outlet guide wheel (400) is located between the arm tip guide wheel (500) and the rope feed guide wheel (300) in the width direction.

8. The boom device for a boom tower crane according to claim 1, wherein: The lifting arm device also includes a first rope supporting assembly (600), which is arranged on the upper side of the lifting arm frame (100) and is located on the side of the rope feed guide wheel (300) away from the arm tip, so as to support the lifting rope (202) between the lifting drum (201) and the rope feed guide wheel (300).

9. The boom device for a boom tower crane according to claim 8, wherein: The first rope supporting assembly (600) comprises a mounting frame (601), a first rope supporting roller (602), a first connecting plate (603) and a threaded connector (604); the first rope supporting roller (602) is rotatably disposed on the mounting frame (601) and is used to carry the lifting rope (202); the mounting frame (601) is provided with a second connecting plate (605) on the lower side of the first rope supporting roller (602), and the second connecting plate (605) is located on the outer side of the upwardly disposed mounting rod section of the lifting boom (100); the first connecting plate (603) is located on the inner side of the mounting rod section and is connected to the second connecting plate (605) by crossing the mounting rod section through the threaded connector (604).

10. The boom device for a boom tower crane according to claim 1, wherein: The lifting arm device also includes a second rope supporting assembly (700) arranged inside the lifting arm frame (100) and located between the rope outlet guide wheel (400) and the arm tip guide wheel (500), the second rope supporting assembly (700) includes two mounting vertical plates (701) and two second rope supporting rollers (702), the two mounting vertical plates (701) are relatively spaced apart on the lifting arm frame (100), and the two second rope supporting rollers (702) are spaced apart up and down and are rotatably arranged between the two mounting vertical plates (701), so that the free end of the lifting rope (202) extends from between the two second rope supporting rollers (702) to the arm tip guide wheel (500).

11. A method for winding a hoisting rope for a boom tower crane, wherein: The hoisting rope winding method adopts a boom device for a boom tower crane, and the boom device for a boom tower crane comprises: A lifting jib (100), the base end of which is disposed on an upper support (800) so as to be able to pitch and luff; A rope winding pulley assembly, comprising a rope inlet guide wheel (300), a rope outlet guide wheel (400) and a boom tip guide wheel (500), wherein the boom tip guide wheel (500) is arranged at the boom tip of the lifting boom (100), the rope inlet guide wheel (300) is arranged at the upper side of the lifting boom (100) and away from the boom root end, and the rope outlet guide wheel (400) is arranged inside the lifting boom (100) and located at a side of the rope inlet guide wheel (300) away from the boom tip, so that the free end of the lifting rope (202) wound on the lifting drum (201) of the balance boom (900) passes through the rope inlet guide wheel (300), the rope outlet guide wheel (400) and the boom tip guide wheel (500) in sequence and is connected to the hook; The hoisting rope winding method comprises: After the free end of the lifting rope (202) on the lifting drum (201) is passed around the rope inlet guide wheel (300) away from the side of the arm root end, it is extended in the reverse direction to the rope outlet guide wheel (400) and after passing around the rope outlet guide wheel (400) away from the side of the arm tip end, it continues to extend in the reverse direction to the arm tip guide wheel (500) to be connected with the hook.

12. A boom tower crane, wherein: The boom tower crane comprises a boom device for the boom tower crane, and the boom device for the boom tower crane comprises: A lifting jib (100), the base end of which is disposed on an upper support (800) so as to be able to pitch and luff; The rope winding pulley assembly comprises a rope inlet guide wheel (300), a rope outlet guide wheel (400) and a boom tip guide wheel (500), wherein the boom tip guide wheel (500) is arranged at the boom tip of the lifting boom (100), the rope inlet guide wheel (300) is arranged at the upper side of the lifting boom (100) and away from the boom root end, and the rope outlet guide wheel (400) is arranged inside the lifting boom (100) and located at a side of the rope inlet guide wheel (300) away from the boom tip, so that a lifting rope (202) wound on a lifting drum (201) of a balancing boom (900) can be lifted. The free end of the arm is connected to the hook by passing through the rope inlet guide wheel (300), the rope outlet guide wheel (400) and the arm tip guide wheel (500) in sequence.

13. The boom tower crane according to claim 12, wherein: The distance between the rope feed guide wheel (300) and the hoisting drum (201) Wherein, B is the width of the lifting drum (201); α is the preset inclination angle.

14. The boom tower crane according to claim 12, wherein: The boom device also includes a first mounting assembly, which includes two first clamping plates (301) relatively spaced apart on the upper side of the boom (100) and a first mounting shaft passing through the two first clamping plates (301); the rope feed guide wheel (300) is clamped between the two first clamping plates (301) and rotatably mounted on the first mounting shaft, so that the free end of the lifting rope (202) passes between the two first clamping plates (301) and around the rope feed guide wheel (300) to enter the interior of the boom (100).

15. The boom tower crane according to claim 14, wherein: The lifting boom (100) is a triangular boom, and the first main chord (101) of the triangular boom is arranged upward and includes a first rod segment (104) and a second rod segment (105), the first rod segment (104) and the second rod segment (105) are disconnected to form a gap portion (106), and two first clamping plates (301) are arranged on both sides of the first main chord (101) corresponding to the gap portion (106), and both ends are respectively connected to the first rod segment (104) and the second rod segment (105) in a one-to-one correspondence, and the rope feed guide wheel (300) is installed on the two first clamping plates (301) in the gap portion (106) through the first installation shaft.

16. The luffing jib tower crane according to claim 12, wherein: The lifting arm device also includes a second mounting assembly, which includes two second clamping plates (401) relatively spaced apart inside the lifting arm frame (100) and a second mounting shaft (402) passing through the two second clamping plates (401); the rope output guide wheel (400) is clamped between the two second clamping plates (401) and rotatably mounted on the second mounting shaft (402), so that the free end of the lifting rope (202) passes through the rope output guide wheel (400) between the two second clamping plates (401) and extends toward the arm tip guide wheel (500).

17. The luffing jib tower crane according to claim 16, wherein: A first transverse web (107) and a second transverse web (108) which are relatively spaced apart are connected between the second main chord (102) and the third main chord (103) which are arranged downwardly of the lifting boom (100); two second clamping plates (401) are relatively spaced apart in the middle of the first transverse web (107); the second mounting assembly further comprises two third clamping plates (403) which are inclined; first ends of the two third clamping plates (403) are relatively spaced apart in the middle of the second transverse web (108); and second ends are respectively and one-to-one arranged on the outer sides of the upper ends of the two second clamping plates (401); the rope outlet guide wheel (400) is placed between the two second clamping plates (401) and is connected in series with the two second clamping plates (401) and the two third clamping plates (403) through the second mounting shaft (402).

18. The luffing jib tower crane according to claim 12, wherein: The arm tip guide wheel (500) is arranged at the first side of the arm tip which is biased toward the lifting boom (100), the rope feed guide wheel (300) is arranged in the center of the upper side of the lifting boom (100) along the width direction, and the rope outlet guide wheel (400) is located between the arm tip guide wheel (500) and the rope feed guide wheel (300) in the width direction.

19. The luffing jib tower crane according to claim 12, wherein: The lifting arm device also includes a first rope supporting assembly (600), which is arranged on the upper side of the lifting arm frame (100) and is located on the side of the rope feed guide wheel (300) away from the arm tip, so as to support the lifting rope (202) between the lifting drum (201) and the rope feed guide wheel (300).

20. The luffing jib tower crane according to claim 19, wherein: The first rope supporting assembly (600) comprises a mounting frame (601), a first rope supporting roller (602), a first connecting plate (603) and a threaded connector (604); the first rope supporting roller (602) is rotatably disposed on the mounting frame (601) and is used to carry the lifting rope (202); the mounting frame (601) is provided with a second connecting plate (605) on the lower side of the first rope supporting roller (602), and the second connecting plate (605) is located on the outer side of the upwardly disposed mounting rod section of the lifting boom (100); the first connecting plate (603) is located on the inner side of the mounting rod section and is connected to the second connecting plate (605) by crossing the mounting rod section through the threaded connector (604).

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