A crane truss arm

Abstract

The utility model relates to the field of crane truss arm, concretely relates to a crane truss arm, including main chord, the outer wall of main chord is fixedly connected with first web, second web and third web from left to right, inclined web one, one end of inclined web one is fixedly connected in the outer wall of first web, the other end of inclined web one is fixedly connected in the outer wall of second web, inclined web two, one end of inclined web two is fixedly connected in the outer wall of second web, the other end of inclined web two is fixedly connected in the outer wall of third web. Through the design of the butt joint assembly, the truss arm frame can be butt jointed together in advance when assembling the truss arm, so that the mounting holes on the two frames can be quickly aligned, so that the staff can directly pass the bolt through the mounting hole when assembling, without repeatedly fine-tuning the truss arm frame to correct the mounting hole, making the assembly work of the truss arm more simple and efficient.

Description

Technical Field

[0001] This utility model relates to the field of crane truss arms, and specifically to a crane truss arm. Background Technology

[0002] As the core load-bearing and luffing structure of a crane, the crane truss boom is widely used in large-scale engineering machinery such as tower cranes and crawler cranes due to its excellent mechanical properties and lightweight structural characteristics. It is a key component for achieving large-span and large-capacity lifting operations.

[0003] For ease of transportation and flexibility of on-site assembly, the overall truss boom is usually designed as a series of independent truss boom frames spliced ​​together with high-strength bolts. This modular design not only effectively reduces the size and difficulty of each transport, but also allows the boom length to be adjusted according to actual working conditions. Furthermore, it facilitates disassembly, recycling, and reuse after the project is completed, resulting in significant economic benefits.

[0004] However, during the assembly process described above, operators must precisely align the bolt holes on the two truss arm frames to be connected before inserting and tightening the bolts. Current truss arm frames generally lack effective guidance and auxiliary docking functions in their design, forcing the heavy frames to rely on repeated manual adjustments to find the hole positions during docking. This docking process is time-consuming and labor-intensive, significantly reducing assembly efficiency. Therefore, it is necessary to invent a crane truss arm to solve these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a crane truss arm that allows the locking plate and insert plate to be quickly connected by setting a slot and insert rod. Under the guidance of the limiting slope and the guiding slope, the insert rod can be inserted into the slot more conveniently and accurately. After the insert rod is inserted into the slot, the two truss arm frames can be quickly and neatly connected by the locking plate and insert plate, so that the mounting holes can be aligned, making it convenient for workers to insert bolts and lock them. This solves the problem of difficulty in calibrating the mounting hole position during the assembly of the truss arm frame.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a crane truss boom, comprising: The main chord has a first web member, a second web member, and a third web member fixedly connected to its outer wall from left to right. A first inclined web member, one end of which is fixedly connected to the outer wall of a first web member, and the other end of which is fixedly connected to the outer wall of a second web member; The second inclined web member has one end fixedly connected to the outer wall of the second web member, and the other end fixedly connected to the outer wall of the third web member. The docking assembly includes a clamping plate, which is fixedly connected to the outer wall of the third web member. The inner wall of the clamping plate has a clamping groove. The outer wall of the first web member is fixedly connected to an insert plate. An insert rod is fixedly connected to the side of the insert plate away from the first web member. A limit block is fixedly connected to the side wall of the clamping plate. A positioning component is provided on the inner wall of the clamping plate.

[0007] Preferably, the limiting block has a limiting slope on the side near the card plate, and the inner wall of the card plate has a guiding slope.

[0008] Preferably, the positioning component includes a locking block, which is slidably connected to the inner wall of the locking plate. One end of the locking block extends into the interior of the locking slot, and the other end of the locking block is fixedly connected to a guide rod. The guide rod passes through and is slidably connected to the inner wall of the locking plate. A force-bearing inclined surface is provided at the end of the locking block near the locking slot.

[0009] Preferably, a spring is sleeved on the outer wall of the guide rod, one end of the spring is fixedly connected to the outer wall of the card block, and the other end of the spring is fixedly connected to the inner wall of the card plate.

[0010] Preferably, the inner wall of the insertion rod has a card hole for inserting the card block.

[0011] Preferably, the inner wall of the main chord has a mounting hole in the radial direction.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This invention, through the design of the docking components, allows the truss arm frames to be pre-docked together during assembly. This enables quick alignment of the mounting holes on the two frames, allowing workers to directly pass bolts through the mounting holes during assembly without repeatedly fine-tuning the truss arm frames to correct the mounting holes, making the assembly of the truss arm simpler and more efficient. Furthermore, the design of the positioning components allows for quick locking after the truss arm frames are docked together, ensuring a secure connection between the two sets of truss arm frames to be installed. This eliminates the need for manual handling of the truss arm frames and facilitates subsequent bolt insertion and tightening. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the truss arm assembly structure of this utility model; Figure 3 This utility model Figure 2 A magnified structural diagram at point A; Figure 4 This is a schematic diagram of the docking structure of the card plate and the insert plate of this utility model; Figure 5 This utility model Figure 4 A schematic diagram of the cross-sectional structure under the specified conditions.

[0015] Legend: 1. Main chord; 2. Diagonal web member one; 3. Diagonal web member two; 4. Connecting assembly; 41. Clamping plate; 42. Clamping groove; 43. Inserting plate; 44. Inserting rod; 45. Limiting block; 46. Limiting inclined surface; 47. Guide inclined surface; 5. Positioning assembly; 51. Clamping block; 52. Force-bearing inclined surface; 53. Guide rod; 54. Spring; 55. Clamping hole; 6. First web member; 7. Second web member; 8. Third web member; 9. Mounting hole. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] This utility model provides, for example Figure 1 - Figure 3 The crane truss boom shown includes a main chord 1, a first diagonal web member 2, a second diagonal web member 3, and a docking assembly 4; The outer wall of the main chord 1 is fixedly connected with the first web member 6, the second web member 7 and the third web member 8 from left to right. The radial strength of the main chord 1 can be improved by the first web member 6, the second web member 7 and the third web member 8. The inner wall of the main chord 1 is radially provided with mounting holes 9. By passing the bolt through the mounting holes 9 and locking it together with the connector, the two main chord members 1 can be fixed together. One end of the inclined web member 2 is fixedly connected to the outer wall of the first web member 6, and the other end of the inclined web member 2 is fixedly connected to the outer wall of the second web member 7. The inclined web member 2 can provide radial support for the first web member 6 and the second web member 7, thereby improving the strength of the first web member 6 and the second web member 7. One end of the second diagonal brace 3 is fixedly connected to the outer wall of the second brace 7, and the other end of the second diagonal brace 3 is fixedly connected to the outer wall of the third brace 8. The second diagonal brace 3 can provide radial support for the second brace 7 and the third brace 8, thereby improving the strength of the second brace 7 and the third brace 8. like Figure 3 - Figure 5As shown, the docking assembly 4 includes a clamping plate 41, which is fixedly connected to the outer wall of the third web member 8. The inner wall of the clamping plate 41 has a groove 42. The outer wall of the first web member 6 is fixedly connected to an insert plate 43. The side of the insert plate 43 away from the first web member 6 is fixedly connected to an insert rod 44. When the insert rod 44 is fully inserted into the groove 42, the insert plate 43 and the clamping plate 41 can be neatly docked together, so that the two main chord members 1 can be neatly docked together, so that the bolts can be passed through the mounting holes 9 to lock the main chord members 1. The side wall of the clamping plate 41 is fixedly connected to a limiting block 45, which can radially limit the insert rod 44. The inner wall of the clamping plate 41 is provided with a positioning assembly 5.

[0018] like Figure 4 As shown, a limiting slope 46 is provided on the side of the limiting block 45 near the card plate 41. The limiting slope 46 can provide radial guidance for the insertion rod 44, so that the insertion rod 44 can be smoothly inserted into the inside of the card slot 42. A guiding slope 47 is provided on the inner wall of the card plate 41. The opening of the card slot 42 can be enlarged by the guiding slope 47. Under the guidance of the guiding slope 47, the insertion of the insertion rod 44 into the card slot 42 can be made easier.

[0019] like Figure 4 - Figure 5 As shown, the positioning component 5 includes a locking block 51, which is slidably connected to the inner wall of the locking plate 41. One end of the locking block 51 extends into the interior of the locking slot 42, and the other end of the locking block 51 is fixedly connected to a guide rod 53. The guide rod 53 passes through and is slidably connected to the inner wall of the locking plate 41. By pulling the guide rod 53, the locking block 51 can be moved out of the locking hole 55, thus releasing the restriction on the insertion rod 44, so as to disassemble the truss arm frame. A force-bearing inclined surface 52 is provided at the end of the locking block 51 near the locking slot 42. When the insertion rod 44 contacts the force-bearing inclined surface 52 during the insertion into the locking slot 42, the insertion rod 44 will push the locking block 51, causing the locking block 51 to slide into the interior of the locking plate 41. The guide rod 53... A spring 54 is fitted on the outer wall. One end of the spring 54 is fixedly connected to the outer wall of the locking block 51, and the other end of the spring 54 is fixedly connected to the inner wall of the locking plate 41. The elasticity of the spring 54 can push the locking block 51, causing it to slide on the inner wall of the locking plate 41 and insert into the locking hole 55. The inner wall of the insertion rod 44 has a locking hole 55 for the locking block 51 to be inserted. When the insertion rod 44 is fully inserted into the slot 42, the locking hole 55 on its inner wall will coincide with the locking block 51. When the locking block 51 slides on the inner wall of the locking plate 41 and inserts into the locking hole 55, the locking block 51 and the locking hole 55 can be used to limit the insertion rod 44 inside the slot 42, so that the two sets of truss arm frames can be stably connected together.

[0020] The working principle of this utility model is as follows: When two sets of truss arm frames need to be installed together, the insert plate 43 on the side wall of the first web member 6 is connected with the clamping plate 41 on the side wall of the third web member 8, so that the insert rod 44 on the side wall of the insert plate 43 is inserted into the inside of the clamping groove 42. At this time, the clamping groove 42 can be used to limit the axial movement of the insert rod 44, and the limiting block 45 can be used to limit the radial movement of the insert rod 44. In this way, the insert plate 43 and the clamping plate 41 can be inserted together. At this time, under the action of the insertion plate 43 and the clamping plate 41, the two sets of truss arm frames can be neatly connected together, so that the mounting holes 9 on the two sets of main chord members 1 can be aligned. Then, the connector is aligned with the mounting holes 9, the bolts are passed through the mounting holes 9, and the bolts are tightened to fix the two main chord members 1 together.

[0021] During the process of inserting the rod 44 into the slot 42, the opening of the slot 42 can be widened by the guide slope 47. Under the guidance of the guide slope 47, the insertion of the rod 44 into the slot 42 is easier. Furthermore, during the process of inserting the rod 44 into the slot 42, the limiting slope 46 can provide radial guidance for the rod 44. In this way, the rod 44 can be smoothly inserted into the slot 42, further improving the convenience and accuracy of the insertion of the rod 44.

[0022] When the insertion rod 44 contacts the inclined surface 52 during insertion into the slot 42, the insertion rod 44 pushes the locking block 51, causing the locking block 51 to slide into the slot plate 41. At the same time, the locking block 51 drives the guide rod 53 to slide on the inner wall of the slot plate 41 and compress the spring 54. This allows the insertion rod 44 to be smoothly inserted into the slot 42. After the insertion rod 44 is fully inserted into the slot 42, the locking hole 55 on its inner wall will coincide with the locking block 51. At this time, the locking block 51 is no longer squeezed by the insertion rod 44. The previously compressed spring 54 will push the locking block 51, causing it to slide on the inner wall of the slot plate 41 and insert into the locking hole 55. At this time, the locking block 51 and the locking hole 55 can limit the insertion rod 44 inside the slot 42. This allows the two sets of truss arm frames to be stably connected together without manual handling. The main chord 1 can be directly locked with bolts.

[0023] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A crane truss boom, characterized in that, include: The main chord (1) has a first web member (6), a second web member (7) and a third web member (8) fixedly connected to its outer wall from left to right. A diagonal brace (2) is provided, one end of which is fixedly connected to the outer wall of the first brace (6), and the other end of which is fixedly connected to the outer wall of the second brace (7). The second oblique web member (3) has one end fixedly connected to the outer wall of the second web member (7), and the other end fixedly connected to the outer wall of the third web member (8). The docking assembly (4) includes a clamping plate (41), which is fixedly connected to the outer wall of the third web member (8). The inner wall of the clamping plate (41) is provided with a clamping groove (42). The outer wall of the first web member (6) is fixedly connected with an insert plate (43). The side of the insert plate (43) away from the first web member (6) is fixedly connected with an insert rod (44). The side wall of the clamping plate (41) is fixedly connected with a limit block (45). The inner wall of the clamping plate (41) is provided with a positioning assembly (5).

2. A crane truss boom according to claim 1, characterized in that: The limiting block (45) has a limiting inclined surface (46) on the side near the card plate (41), and the inner wall of the card plate (41) has a guiding inclined surface (47).

3. A crane truss boom according to claim 1, characterized in that: The positioning component (5) includes a locking block (51), which is slidably connected to the inner wall of the locking plate (41). One end of the locking block (51) extends into the interior of the locking groove (42), and the other end of the locking block (51) is fixedly connected to a guide rod (53). The guide rod (53) passes through and is slidably connected to the inner wall of the locking plate (41). A force-bearing inclined surface (52) is provided at the end of the locking block (51) near the locking groove (42).

4. A crane truss boom according to claim 3, characterized in that: A spring (54) is fitted on the outer wall of the guide rod (53). One end of the spring (54) is fixedly connected to the outer wall of the block (51), and the other end of the spring (54) is fixedly connected to the inner wall of the plate (41).

5. A crane truss boom according to claim 1, characterized in that: The inner wall of the insertion rod (44) is provided with a card hole (55) for inserting the card block (51).

6. A crane truss boom according to claim 1, characterized in that: The inner wall of the main chord (1) is provided with a mounting hole (9) in the radial direction.

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