Cargo boom and crane
By designing a removable arm joint and a tie rod joint, the problems of high cost and difficulty in adjusting the width of the boom in the prior art are solved, and flexible adjustment of the length of the boom and the reduction of transportation costs are achieved.
Patent Information
- Application Number
- CN202422540886.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing booms have high cost and are difficult to adjust flexibly, which increases the overall cost and assembly difficulty, and the preparation of a variety of standard parts increases the cost of transfer transportation.
A lifting arm is designed, including removable arm joints and tie rod joints. The tie rod joints are consistent with the length of the arm joint. The length of the boom assembly is adjusted by disassembly or with the addition of the tie rod joints, and connected to the crane's buoyant mechanism through the tie rod assembly, simplifying the length adjustment and transportation process.
It realizes flexible adjustment of the length of the boom, reduces the cost requirement of the variable amplitude pull rod, simplifies the assembly process, and reduces the cost of transfer transportation.
Smart Images
Figure CN223175701U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of construction machinery, and more specifically, relates to a boom and a crane. Background Art
[0002] In the existing boom designs, as Figure 1 and Figure 2 shown, the boom includes assembled boom sections 10 and a traction assembly. The traction assembly includes a traction luffing rope 30 and a luffing tie rod 20. Multiple assembled boom sections 10 are spliced to form a main boom section, and the main boom section completes luffing movement under the action of the traction assembly. In different working environments, the number of boom sections of the main boom section can be changed to adjust the length of the main boom section. After the length of the main boom section changes, a luffing tie rod 20 with a corresponding length is selected to adjust the length of the traction assembly so as to adapt to the length change of the main boom section.
[0003] However, currently, the luffing tie rod 20 is generally a structural member with a relatively low cost, and the traction luffing rope 30 has a relatively high cost. By extending the traction luffing rope 30, the length change of the traction assembly can be achieved, but it will greatly increase the overall cost. By splicing multiple luffing tie rods 20 with different standard lengths to form a tie rod assembly with a larger length, the length change of the traction assembly can also be achieved. Since the length of the luffing tie rod 20 that makes up the tie rod assembly is inconsistent with the length of the assembled boom section 10, when assembling a tower crane, after the boom with the required length is assembled, the length of the corresponding luffing tie rod 20 needs to be selected, which obviously increases the assembly difficulty and reduces the efficiency. At the same time, it is necessary to prepare luffing tie rods 20 with multiple lengths of standard parts, which also increases the cost of transfer transportation. Summary of the Invention
[0004] The purpose of this application is to provide a boom and a crane to facilitate the length adjustment and transfer transportation of the boom.
[0005] To achieve the above purpose, on the one hand, this application provides a boom, which includes:
[0006] A boom assembly, which includes a main boom and at least one boom section that are detachably connected in sequence along its own length direction, and the main boom is located at the tail end of the boom assembly;
[0007] A tie rod assembly, which is arranged above the boom assembly. One end of the tie rod assembly is connected to the head end of the boom assembly, and the other end is used to connect the luffing mechanism of the crane;
[0008] Wherein, the tie rod assembly includes a tie rod main body and at least one tie rod section that are detachably connected in sequence along its own length direction, and the length of each tie rod section is the same as the length of the corresponding boom section below.
[0009] In some embodiments, when the arm section is transported, the tie rod section is detachably arranged on the corresponding arm section, and both ends of the tie rod section are aligned with both ends of the corresponding arm section.
[0010] In some embodiments, the tie rod section includes a tie rod body and a female joint. A female joint is provided at one end of the tie rod body, and the other end of the tie rod body is used to connect with the female joint in an adjacent tie rod section.
[0011] In some embodiments, first connection structures are provided at both ends of the female joint, second connection structures are provided at both ends of the tie rod body, and the second connection structure at one end of the tie rod body is connected to the first connection structure at one end of the female joint.
[0012] In some embodiments, the female joint includes a first ear plate and a second ear plate arranged at intervals. Pin holes are provided at both ends of the first ear plate and the second ear plate to form the first connection structure. Fixed holes are provided at both ends of the tie rod body to form the second connection structure. One end of the tie rod body is inserted between the first ear plate and the second ear plate and is connected by a pin passing through the pin hole and the fixed hole.
[0013] In some embodiments, a handle is provided on the female joint.
[0014] In some embodiments, the boom includes a plurality of tie rod assemblies.
[0015] On the other hand, this application protects a crane. The crane includes an A-frame, a luffing mechanism, and the above-mentioned boom. The A-frame is arranged above the tower body of the crane, and the luffing mechanism is arranged on the A-frame and is connected to the tie rod assembly through the towing rope of the luffing mechanism.
[0016] In some embodiments, the luffing mechanism further includes a balance beam and a moving pulley block. One end of the balance beam is connected to the tie rod assembly, and the other end is connected to the moving pulley block. The towing rope is wound around the moving pulley block.
[0017] In some embodiments, there are at least two tie rod assemblies. A first connection portion and at least two second connection portions are provided on the balance beam. The at least two second connection portions are symmetrically arranged about the symmetry center line of the balance beam and are respectively connected to the corresponding tie rod assemblies. The first connection portion is located on the symmetry center line of the balance beam and is connected to the moving pulley block.
[0018] Through the above technical solutions, the boom provided by the embodiments of this application has the following beneficial effects:
[0019] In the technical solution of the present application, when disassembling / installing the boom sections to shorten / extend the boom assembly, the tie rod sections corresponding to the disassembled boom sections can be removed / installed in the tie rod assembly, so as to adjust the length of the tie rod assembly. Since the length of the tie rod section is the same as the length of the corresponding boom section below, compared with the design of the luffing tie rod with a standard length in the prior art, the tie rod assembly of the present application can better adapt to the length of the boom assembly during the process of adjusting the length of the boom assembly, and the adjustment is convenient. In addition, there is no need to prepare various luffing tie rods with standard lengths, thus reducing the cost of transfer transportation.
[0020] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiments section. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. In the drawings:
[0022] Figure 1 is a schematic structural diagram of a boom in the prior art when it is in the long boom state;
[0023] Figure 2 is a schematic structural diagram of a boom in the prior art when it is in the short boom state;
[0024] Figure 3 is a schematic structural diagram of a boom in the long boom state according to the specific embodiment of the present application;
[0025] Figure 4 is Figure 3 a schematic structural diagram of the boom in the short boom state in;
[0026] Figure 5 is Figure 3 a schematic structural diagram of the boom section and the tie rod section after assembly and transportation in;
[0027] Figure 6 is Figure 5 a schematic structural diagram of the female joint of the tie rod section of the boom in;
[0028] Figure 7 is Figure 3 a schematic structural diagram of the tie rod assembly, the balance beam and the movable pulley block after assembly in;
[0029] Figure 8 is Figure 7 a schematic structural diagram of the movable pulley block in;
[0030] Description of Reference Numerals in the Prior Art
[0031] 10 Assembly Arm Section 20 Luffing Tie Rod
[0032] 30 Traction Luffing Rope
[0033] Description of Reference Numerals in the Present Application
[0034] 2220 Handle 222a First Ear Plate
[0035] 100 Boom Assembly 222b Second Ear Plate
[0036] 110 Main Boom 222c Pin Hole
[0037] 120 Arm Section 300 Luffing Mechanism
[0038] 121 Main Chord 310 Traction Rope
[0039] 122 Web Member 320 Balance Beam
[0040] 200 Tie Rod Assembly 321 First Connection Portion
[0041] 210 Tie Rod Body 322 Second Connection Portion
[0042] 220 Tie Rod Section 330 Movable Pulley Block
[0043] 221 Tie Rod Body 400 A-Frame
[0044] 2210 Fixed Hole 500 Tower Body
[0045] 222 Female Connector Detailed Embodiment
[0046] The following describes the detailed embodiment of the present application with reference to the accompanying drawings. It should be understood that the detailed embodiment described herein is only for explaining and understanding the present application, and is not used to limit the present application.
[0047] The following describes a boom and a crane according to the present application with reference to the accompanying drawings.
[0048] The present application discloses a novel boom, as Figure 3 and Figure 4 shown. A boom in a specific embodiment includes:
[0049] A boom assembly 100, which includes a main boom 110 and at least one arm section 120 that are detachably connected in sequence along its own length direction, and the main boom 110 is located at the tail end of the boom assembly 100;
[0050] The tie rod assembly 200 is arranged above the boom assembly 100. One end of the tie rod assembly 200 is connected to the head end of the boom assembly 100, and the other end is used to connect the luffing mechanism 300 of the crane.
[0051] Wherein, the tie rod assembly 200 includes a tie rod main body 210 and at least one tie rod section 220 that are detachably connected in sequence along its own length direction, and the length of each tie rod section 220 is the same as that of the corresponding boom section 120 below.
[0052] Specifically, when adjusting the lengths of the boom assembly 100 and the tie rod assembly 200, the corresponding boom section 120 and tie rod section 220 can be removed / added in the boom assembly 100 and the tie rod assembly 200 respectively, so as to ensure the length adaptation between the tie rod assembly 200 and the boom assembly 100. Compared with the design in the prior art where the luffing tie rod 20 has a standard length (as shown in Figure 1 and Figure 2 ), the tie rod assembly 200 of the present application has better adaptability to boom assemblies 100 with different lengths and is convenient to adjust. In addition, there is no need to prepare luffing tie rods 20 with multiple different lengths, thus reducing the cost of transfer transportation. Among them, the main boom 110 may include boom sections 120 with different lengths and connected in sequence, the tie rod main body 210 may include tie rod sections 220 with different lengths and connected in sequence, and the form of the tie rod section 220 is not limited to a rod, and can also be a plate, etc.
[0053] In this embodiment, as shown in Figure 5 , when the boom section 120 is transported, the tie rod section 220 is detachably arranged on the corresponding boom section 120, and the two ends of the tie rod section 220 are aligned with the two ends of the corresponding boom section 120.
[0054] Specifically, the boom section 120 includes a plurality of main chord members 121 arranged along its own length direction and a plurality of web members 122 arranged between the main chord members 121. When the tie rod section 220 is installed on the boom section 120, the two ends of the tie rod section 220 are flush with the main chord members 121.
[0055] Optionally, the tie rod section 220 can be connected to the web member 122 through a connecting member such as a strap. With such a setting, the disassembly and assembly of the tie rod section 220 and the boom section 120 are convenient, which is beneficial to the integrated transportation of the tie rod section 220 and the boom section 120, and at the same time avoids the tie rod section 220 falling off during transportation. And the matching tie rod section 220 can be quickly found during assembly, thus improving the assembly efficiency.
[0056] In some embodiments, a plurality of pipe clamps (not shown in the figure) can also be provided on the boom section 120, and the tie rod section 220 is clamped by the pipe clamps to realize the connection between the tie rod section 220 and the boom section 120.
[0057] Furthermore, as shown in Figure 3 ,Figure 5 and Figure 6 As shown in Figure 6 , the tie rod joint 220 includes a tie rod body 221 and a female joint 222. One end of the tie rod body 221 is provided with the female joint 222, and the other end of the tie rod body 221 is used to connect with the female joint 222 in an adjacent tie rod joint 220.
[0058] Specifically, with such a setting, it is beneficial for the disassembly and assembly between the tie rod joints 220 to facilitate the adjustment of the length of the tie rod assembly 200.
[0059] In this embodiment, as Figure 5 and Figure 6 shown, both ends of the female joint 222 are provided with first connection structures, both ends of the tie rod body 221 are provided with second connection structures, and the second connection structure at one end of the tie rod body 221 is connected to the first connection structure at one end of the female joint 222.
[0060] Specifically, with such a setting, it is convenient for the female joint 222 to be connected to the tie rod body 221 to form the tie rod joint 220, and for the tie rod joints 220 to be connected to form the tie rod assembly 200.
[0061] In this embodiment, as Figure 5 and Figure 6 shown, the female joint 222 includes a first ear plate 222a and a second ear plate 222b which are arranged at intervals and connected. Pin holes 222c are provided at both ends of the first ear plate 222a and the second ear plate 222b to form the first connection structure. Fixed holes 2210 are provided at both ends of the tie rod body 221 to form the second connection structure. One end of the tie rod body 221 is inserted between the first ear plate 222a and the second ear plate 222b, and is connected by a pin passing through the pin hole 222c and the fixed hole 2210.
[0062] Specifically, with such a setting, the structure of the female joint 222 is simple, easy to process and can facilitate the hinged setting of the tie rod body 221 and the female joint 222. Since the overall size of the tie rod joint 220 is large, it is not easy to assemble. Before lifting the tie rod assembly 200, the female joint 222 can be first installed between adjacent tie rod bodies 221, so that the tie rod bodies 221 at both ends can be connected into a component, thus facilitating the assembly work of the tie rod joint 220.
[0063] In this embodiment, as Figure 6 shown, a handle 222a is provided on the female joint 222. It can be understood that since the weight is heavy after the female joint 222 is assembled with the tie rod joint 220, in order to facilitate the assembly of the tie rod assembly 200, a handle 222a that can be held along the length direction of the tie rod body 221 can be provided on the female joint 222.
[0064] In some embodiments, the handle 222a can also be set to be held in the vertical direction.
[0065] In some embodiments, the handle 2220 is provided on the first ear plate 222a or the second ear plate 222b, so as to facilitate the handling of the female joint 222 and the position adjustment during the assembly process.
[0066] In some other embodiments, handles 2220 may be provided on both the first ear plate 222a and the second ear plate 222b.
[0067] In the present embodiment, as Figure 7 shown, the boom includes a plurality of tie rod assemblies 200.
[0068] Specifically, the boom includes two groups of tie rod assemblies 200 symmetrically arranged with respect to the midline of the boom, which are used to jointly share the load of the pulling boom, thereby improving the reliability of the boom. Of course, the number of the tie rod assemblies 200 is not limited to the above two groups and may also be other numbers.
[0069] The present application discloses a new type of crane. As Figure 3 and 4 shown, a crane in a specific embodiment includes an A-frame 400, a luffing mechanism 300 and the above-mentioned boom. The A-frame 400 is arranged above the tower body 500 of the crane. The luffing mechanism 300 is arranged on the A-frame 400 and is connected to the tie rod assembly 200 through the towing rope 310 of the luffing mechanism 300.
[0070] Specifically, referring to Figure 3 , the A-frame 400 includes a vertically arranged rear strut and an obliquely arranged front strut. The top end of the tower body 500 is provided with a slewing assembly. The boom and the counterweight of the crane are respectively arranged on the transverse two sides of the slewing assembly. The rear strut and the front strut are both arranged on the counterweight and jointly form a stable frame structure. The towing rope 310 of the luffing mechanism 300 is connected to the top end of the A-frame 400. By retracting and releasing the luffing rope 310, the tie rod assembly 200 is towed to drive the head end of the boom assembly 100, thereby realizing the luffing movement of the boom.
[0071] In the present embodiment, as Figure 7 and Figure 8 shown, the luffing mechanism 300 further includes a balance beam 320 and a movable pulley block 330. One end of the balance beam 320 is connected to the tie rod assembly 200, and the other end is connected to the movable pulley block 330. The towing rope 310 is wound around the movable pulley block 330.
[0072] Specifically, the balance beam 320 is hinged to the tie rod assembly 200, and the movable pulley block 330 around which the towing rope 310 is wound is hinged to the balance beam 320. Therefore, before the force is balanced, relative swinging can occur between the balance beam 320 and the tie rod assembly 200, and between the movable pulley block 330 and the balance beam 320 until the force is balanced, thereby ensuring the stable and reliable transmission between the towing rope 310 and the tie rod assembly 200. Among them, after the design of the movable pulley block 330 is introduced, the requirement for the cross-sectional size of the towing rope 310 can be reduced, and the towing effect of the towing rope 310 on the tie rod assembly 200 can be improved.
[0073] As Figure 7 shown, there are at least two tie rod assemblies 200. The balance beam 320 is provided with a first connection portion 321 and at least two second connection portions 322. The at least two second connection portions 322 are symmetrically arranged about the symmetry center line of the balance beam 320 and are respectively connected to the corresponding tie rod assemblies 200. The first connection portion 321 is located on the symmetry center line of the balance beam 320 and is connected to the movable pulley block 330.
[0074] Specifically, the balance beam 320 is provided with two second connection portions 322 that are symmetrically arranged about the symmetry center line of the balance beam 320. With such an arrangement, after the tie rod assembly 200 is connected to the second connection portion 322, it is beneficial to the balanced load bearing of each tie rod assembly 200. Of course, those skilled in the art can understand that when using a larger-sized boom in a high-load environment, more tie rod assemblies 200 can also be provided. In this way, the balance beam 320 can be provided with a plurality of second connection portions 322 that are symmetrically arranged about the symmetry center line of the balance beam 320 for adaptation.
[0075] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0076] In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0077] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this 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 a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
Claims
1. A boom, characterized in that, The boom includes: A boom assembly (100) that includes, along its own length direction, a main boom (110) and at least one boom section (120) detachably connected in sequence. The main boom (110) is located at the tail end of the boom assembly (100). A tie rod assembly (200) arranged above the boom assembly (100). One end of the tie rod assembly (200) is connected to the head end of the boom assembly (100), and the other end is used to connect to the luffing mechanism (300) of the crane. Wherein, the tie rod assembly (200) includes, along its own length direction, a tie rod main body (210) and at least one tie rod section (220) detachably connected in sequence. The length of each tie rod section (220) is the same as that of the corresponding boom section (12) below.
2. The boom according to claim 1, wherein, When the boom section (120) is being transported, the tie rod section (220) is detachably arranged on the corresponding boom section (120), and the two ends of the tie rod section (220) are aligned with the two ends of the corresponding boom section (120).
3. The boom according to claim 2, characterized in that, The tie rod section (220) includes a tie rod body (221) and a female joint (222). One end of the tie rod body (221) is provided with the female joint (222), and the other end of the tie rod body (221) is used to connect to the female joint (222) in the adjacent tie rod section (220).
4. The boom according to claim 3, wherein, Both ends of the female joint (222) are provided with first connection structures, and both ends of the tie rod body (221) are provided with second connection structures. The second connection structure at one end of the tie rod body (221) is connected to the first connection structure at one end of the female joint (222).
5. The boom according to claim 4, wherein, The female joint (222) includes a first ear plate (222a) and a second ear plate (222b) arranged at intervals. Pin holes (222c) are provided at both ends of the first ear plate (222a) and the second ear plate (222b) to form the first connection structure. Fixed holes (2210) are provided at both ends of the tie rod body (221) to form the second connection structure. One end of the tie rod body (221) is inserted between the first ear plate (222a) and the second ear plate (222b), and is connected by a pin passing through the pin hole (222c) and the fixed hole (2210).
6. The boom according to claim 3, wherein, A handle (2220) is provided on the female joint (222).
7. The boom according to any one of claims 1 to 6, characterized in that, The boom includes a plurality of the tie rod assemblies (200).
8. A crane, characterized in that, The crane includes an A-frame (400), a luffing mechanism (300), and the boom according to any one of claims 1 to 7. The A-frame (400) is arranged above the tower body (500) of the crane. The luffing mechanism (300) is arranged on the A-frame (400) and is connected to the tie rod assembly (200) through the towing rope (310) of the luffing mechanism (300).
9. The crane according to claim 8, characterized in that, The luffing mechanism (300) further includes a balance beam (320) and a movable pulley block (330). One end of the balance beam (320) is connected to the tie rod assembly (200), and the other end is connected to the movable pulley block (330). The towing rope (310) is wound around the movable pulley block (330).
10. The crane according to claim 9, characterized in that, There are at least two tie rod assemblies (200). The balance beam (320) is provided with a first connection portion (321) and at least two second connection portions (322). The at least two second connection portions (322) are symmetrically arranged about the symmetry center line of the balance beam (320) and are respectively connected to the corresponding tie rod assemblies (200). The first connection portion (321) is located on the symmetry center line of the balance beam (320) and is connected to the movable pulley block (330).