Fabricated truss arm for crane

Abstract

The utility model relates to the technical field of cranes, and particularly discloses an assembled truss arm for a crane, which comprises two main beams, an auxiliary beam arranged between the two main beams, a reinforcing plate arranged on one side of each main beam, a plurality of groups of connecting slotted holes uniformly distributed on the reinforcing plate, and at least three T-shaped grooves arranged at equal intervals, the T-shaped grooves are formed in the width direction of the reinforcing plate. The main beam, the end beam and the pedal assembly are all of a split structure and are independent of one another, separate machining and transportation can be achieved, the machining cost and the transportation cost are reduced, the end beam body and the main beam are assembled in an inserted connection mode, disassembly and assembly are convenient and fast, the assembly time is saved, the overall stability is high after assembly, and the assembly efficiency is improved. Or by installing an extension beam on the auxiliary beam body, the length range of the auxiliary beam is expanded, truss arms of different specifications are obtained, the overall compatibility and expansibility are improved, the machining and using cost is low, and installation and maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to an assembled truss arm for cranes. Background Art

[0002] A bridge crane is a lifting equipment that is horizontally mounted above workshops, warehouses and material yards to lift materials. The truss arm of the bridge crane runs longitudinally along the tracks laid on the elevated platforms on both sides, and can make full use of the space under the truss arm to lift materials without being hindered by ground equipment. It is the most widely used and largest number of lifting machinery. The truss arm is the basic component of the bridge crane. It consists of a main beam, end beam, walkway and other parts. The main beam spans above the span and has various structural forms such as box-type, truss frame, web plate, and round tube.

[0003] At present, with the increase in crane lifting tonnage and span, the truss arm of the crane is usually designed to have large external dimensions, which is very easy to be over-wide and over-weight, greatly increasing the cost of construction, processing and transportation, and also bringing greater difficulty to installation, resulting in complicated disassembly and assembly, time-consuming and labor-intensive.

[0004] Therefore, it is necessary to propose an assembled truss arm for a crane to overcome the defects of the prior art. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art and provide an assembled truss arm for a crane.

[0006] The technical solution of the utility model is:

[0007] A prefabricated truss arm for a crane comprises two main beams, which are arranged in parallel and symmetrically, a sub-beam is arranged between the two main beams, a reinforcing plate is arranged on one side of the main beam, a plurality of groups of connecting slots are evenly arranged along the length direction of the reinforcing plate, each group of connecting slots comprises at least three T-slots arranged at equal intervals, the T-slots are arranged along the width direction of the reinforcing plate and do not penetrate through the width direction of the reinforcing plate, and two ends of the sub-beam are respectively connected to corresponding connecting slots on the two main beams.

[0008] Preferably, a connecting hole is provided on the plane at the bottom end of the T-slot.

[0009] Preferably, the sub-beam includes a sub-beam body, and first T-shaped connecting blocks are symmetrically arranged on both sides of the end of the sub-beam body, the first T-shaped connecting blocks are adapted to the T-shaped slots, and the spacing between the two first T-shaped connecting blocks is twice the spacing between two adjacent T-shaped slots.

[0010] Preferably, the sub-beam includes a sub-beam body, and first T-shaped connecting blocks are symmetrically arranged on both sides of the end of the sub-beam body, the first T-shaped connecting blocks are adapted to the T-shaped slots, and the spacing between two first T-shaped connecting blocks is twice the spacing between two adjacent T-shaped slots. The interior of the sub-beam body is arranged as a hollow cavity, and an extension beam is slidably arranged in the cavity.

[0011] Preferably, a second T-shaped connecting block is provided at one end of the extension beam, and the second T-shaped connecting block is adapted to the T-slot. A plurality of first locking holes evenly and equidistantly distributed are provided on the extension beam, and a plurality of second locking holes are provided on the sub-beam body. The first locking holes and the second locking holes can be locked and connected by a quick locking pin.

[0012] Preferably, a first fixing block is provided at the upper end of the first T-shaped connecting block, and a first fixing hole is provided on the first fixing block, and the first fixing hole is matched with the connecting hole.

[0013] Preferably, a second fixing block is provided at the upper end of the second T-shaped connecting block, and a second fixing hole is provided on the second fixing block, and the second fixing hole is matched with the connecting hole.

[0014] Preferably, a pedal assembly is provided on the side of the main beam facing away from the reinforcing plate, the pedal assembly includes an anti-skid plate and multiple support rods, the multiple support rods are arranged at intervals and are all connected to the main beam, the anti-skid plate is arranged on the multiple support rods, and a guardrail is arranged on the anti-skid plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The main beam, end beam and pedal assembly of the utility model all adopt a split structure, which are independent of each other and can be processed and transported separately, thus reducing processing and transportation costs. When in use, the end beam body and the main beam are spliced ​​and assembled by plugging, which is convenient and quick to disassemble and assemble, saving assembly time. After assembly, the overall stability is high, or an extension beam can be installed on the auxiliary beam body to expand the length range of the auxiliary beam. By adjusting the installation position of the extension beam on the auxiliary beam body, truss arms of different specifications can be obtained, thereby improving the overall compatibility and expansibility, having a wide range of applications, being stable and reliable as a whole, having low processing and use costs, and being easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of Embodiment 1 of the present utility model;

[0018] Figure 2 It is a partial enlarged structural schematic diagram of A of the utility model;

[0019] Figure 3 This is a schematic diagram of the auxiliary beam body structure of the utility model;

[0020] Figure 4This is a schematic diagram of the three-dimensional structure of Embodiment 2 of the present utility model;

[0021] Figure 5 It is a partial enlarged structural schematic diagram of B of the utility model;

[0022] Figure 6 This is a schematic diagram of the sub-beam structure of Example 2 of the utility model;

[0023] Figure 7 It is a schematic diagram of the extension beam structure of the utility model.

[0024] Among them, 1. main beam; 2. auxiliary beam body; 21. cavity; 22. second locking hole; 3. reinforcement plate; 4. T-slot; 5. connecting hole; 6. first T-connecting block; 7. first fixing block; 8. first tightening hole; 9. extension beam; 10. second T-connecting block; 11. second fixing block; 12. second tightening hole; 13. first locking hole; 14. quick locking pin; 15. anti-skid plate; 16. support rod; 17. guardrail. DETAILED DESCRIPTION

[0025] In order to make the technical means, technical features, utility model objectives and technical effects achieved by the utility model easy to understand, the utility model is further explained below with reference to specific illustrations.

[0026] Example 1

[0027] like Figure 1-Figure 3 As shown, an assembled truss arm for a crane includes a main beam 1, the number of the main beams 1 is two, the two main beams 1 are parallel to each other and symmetrically distributed, a plurality of sub-beams are connected between the two main beams 1, and the plurality of sub-beams are connected to the main beam 1 in a plug-in manner. Specifically, a reinforcing plate 3 is welded on a side wall of the main beam 1, and a plurality of groups of connecting slots are processed on the reinforcing plate 3 along its length direction uniformly distributed, and each group of connecting slots includes at least three T-slots 4 distributed at equal intervals, and the T-slots 4 are processed into the form of countersunk holes, that is, the T-slots 4 extend along the width direction of the reinforcing plate 3 and do not penetrate the reinforcing plate 3 in the width direction. The two ends of the sub-beam are respectively connected to the corresponding connecting slots on the two main beams 1. After the connection, the T-slot 4 serves the purpose of positioning and supporting the sub-beam. The sub-beam includes a sub-beam body 2. To facilitate the plug-in of the sub-beam body 2 and the T-slot 4, first T-shaped connecting blocks 6 are processed at both ends of the sub-beam body 2. The two first T-shaped connecting blocks 6 are symmetrically distributed on both sides of the end of the sub-beam body 2. The first T-shaped connecting blocks 6 are adapted to the T-slot 4. The spacing between the two first T-shaped connecting blocks 6 is twice the spacing between two adjacent T-slots 4. When plugged in, the two first T-shaped connecting blocks 6 are plugged into the two spaced T-slots 4.

[0028] like Figure 2 and Figure 3As shown, a first fixing block 7 is integrally processed at the upper end of the first T-shaped connecting block 6. The first fixing block 7 is processed into a structure that can be inserted into the T-shaped slot 4. A penetrating first fixing hole 8 is processed on the first fixing block 7, which is used for locking and fixing the auxiliary beam body 2 after it is plugged into place, so as to avoid the position change of the auxiliary beam body 2 relative to the main beam 1 during use. Correspondingly, a connecting hole 5 is processed on the plane at the bottom end of the T-shaped slot 4, and the first fixing hole 8 is adapted to the connecting hole 5. After the auxiliary beam body 2 is plugged into place, the first fixing hole 8 coincides with the connecting hole 5. A quick locking pin 14 is inserted between the first fixing hole 8 and the connecting hole 5 to realize the quick connection and locking of the auxiliary beam body 2 on the main beam 1. The connection method using the quick locking pin 14 is convenient and quick to disassemble and assemble, and the connection is reliable.

[0029] like Figure 1 As shown, a pedal assembly is installed on the main beam 1 and on the side facing away from the reinforcing plate 3, so that the operator can stand on the pedal assembly to perform corresponding operations. The pedal assembly includes an anti-skid plate 15 and multiple support rods 16. The multiple support rods 16 are distributed at intervals and are all connected to the main beam 1 by bolts. The anti-skid plate 15 is connected to the support rods 16. The anti-skid plate 15 uses but is not limited to a patterned plate to increase its anti-skid performance and improve safety in use. A guardrail 17 is installed on the anti-skid plate 15, and the guardrail 17 is also connected to the anti-skid plate 15 by bolts, so as to further improve the safety of personnel during operation.

[0030] The main beam 1, the auxiliary beam and the pedal assembly all adopt a relatively independent split structure, which is convenient for processing and transportation and reduces the processing and transportation costs. When used on site, the first T-shaped connecting blocks 6 at both ends of the auxiliary beam body 2 are inserted into the T-shaped slots 4 on the main beam 1, and the T-shaped slots 4 support and position the auxiliary beam body 2. After being inserted into place, the quick locking pin 14 is inserted into the first fixing hole 8 and the connecting hole 5 to achieve the locking of the auxiliary beam body 2 on the main beam 1, avoiding the position change of the auxiliary beam body 2 relative to the main beam 1 during use, ensuring safety in use, and the overall connection is convenient and fast, and stable and reliable after connection.

[0031] Example 2

[0032] like Figure 4-Figure 7As shown, an assembled truss arm for a crane includes a main beam 1. There are two main beams 1. The two main beams 1 are parallel to each other and symmetrically distributed. A plurality of sub-beams are connected between the two main beams 1. The plurality of sub-beams are connected to the main beam 1 by plug-in. Specifically, a reinforcing plate 3 is welded on a side wall of the main beam 1. The reinforcing plate 3 is processed with a plurality of groups of connecting slots evenly distributed along its length direction. Each group of connecting slots includes at least three T-slots 4 distributed at equal intervals. The T-slots 4 are processed into the form of countersunk holes, that is, the T-slots 4 extend along the width direction of the reinforcing plate 3 and do not penetrate the reinforcing plate 3 in the width direction. The two ends of the sub-beam are respectively connected to the corresponding connecting slots on the two main beams 1. After connection, the T-slots 4 serve the purpose of positioning and supporting the sub-beam.

[0033] like Figure 6 and Figure 7 As shown, the sub-beam includes a sub-beam body 2, and first T-shaped connecting blocks 6 are processed at both ends of the sub-beam body 2. The two first T-shaped connecting blocks 6 are symmetrically distributed on both sides of the end of the sub-beam body 2, and the first T-shaped connecting blocks 6 are adapted to the T-slot 4. The spacing between the two first T-shaped connecting blocks 6 is twice the spacing between two adjacent T-slots 4. The interior of the sub-beam body 2 is processed into a hollow cavity 21, and an extension beam 9 is installed in the cavity 21. The extension beam 9 can slide and retract in the cavity 21. A second T-shaped connecting block 10 is processed at one end of the extension beam 9 away from the sub-beam body 2, and the second T-shaped connecting block 10 is adapted to the T-slot 4. The spacing between the second T-shaped connecting block 10 and the first T-shaped connecting block 6 is equal to the spacing between two adjacent T-slots 4.

[0034] The extension beam 9 is retracted in the cavity 21, and the first T-shaped connecting block 6 and the second T-shaped connecting block 10 are flush. The first T-shaped connecting block 6 and the second T-shaped connecting block 10 can be inserted into the T-shaped slot 4 at the same time to enhance the stability of the connection with the main beam 1. A first fixing block 7 is integrally processed on the upper end of the first T-shaped connecting block 6, and the first fixing block 7 is processed into a structure that can be inserted into the T-shaped slot 4. A second fixing block 11 is integrally processed on the upper end of the second T-shaped connecting block 10, and the second fixing block 11 is processed into a structure that can be inserted into the T-shaped slot 4. A through first fixing hole 8 is processed on the first fixing block 7, and a through second fixing hole 12 is processed on the second fixing block 11. The first fixing hole 8 and the second fixing hole 12 are used to realize locking and fixing of the auxiliary beam body 2 after it is plugged into place, so as to avoid the position change of the auxiliary beam body 2 relative to the main beam 1 during use. Correspondingly, a connecting hole 5 is processed on the plane at the bottom end of the T-slot 4. The first fixing hole 8 and the second fixing hole 12 are both adapted to the connecting hole 5. After the auxiliary beam body 2 is plugged into place, the first fixing hole 8 and the second fixing hole 12 are respectively overlapped with the connecting hole 5. The quick locking pin 14 can be inserted between the first fixing hole 8 and the connecting hole 5 and between the second fixing hole 12 and the connecting hole 5 to realize the quick connection and locking of the auxiliary beam on the main beam 1. The connection method using the quick locking pin 14 is convenient and quick to disassemble and assemble;

[0035] The extension beam 9 extends relative to the auxiliary beam body 2 to extend the length range of the auxiliary beam, and is inserted into the T-slot 4 through the second T-shaped connecting block 10 to realize the connection between the auxiliary beam body 2 and the main beam 1. After insertion, the second fixing hole 12 corresponds to the connecting hole 5, and a quick locking pin 14 is inserted between the second fixing hole 12 and the connecting hole 5 to realize the quick connection and locking of the auxiliary beam on the main beam 1. A plurality of evenly and equidistantly distributed first locking holes 13 are processed on the extension beam 9, and a plurality of second locking holes 22 are processed on the auxiliary beam body 2. After the extension beam 9 is extended into place, the first locking hole 13 and the second locking hole 22 can be locked and connected by the quick locking pin 14 to lock the position between the extension beam 9 and the auxiliary beam body 2 to avoid displacement of the extension beam 9 during use.

[0036] like Figure 4 As shown, a pedal assembly is installed on the main beam 1 and on the side facing away from the reinforcing plate 3, so that the operator can stand on the pedal assembly to perform corresponding operations. The pedal assembly includes an anti-skid plate 15 and a plurality of support rods 16. The plurality of support rods 16 are distributed at intervals and are all connected to the main beam 1 by bolts. The anti-skid plate 15 is connected to the support rods 16. The anti-skid plate 15 adopts but is not limited to a patterned plate to increase its anti-skid performance and improve safety in use. A guardrail 17 is installed on the anti-skid plate 15, and the guardrail 17 is also connected to the anti-skid plate 15 by bolts to further improve safety in operation.

[0037] By installing an extension beam 9 in the sub-beam body 2, the length of the sub-beam body 2 can be extended. While ensuring the connection strength and stability, the adjustment range is wide, the specifications of the truss arm are expanded, and there is no need to process and manufacture each specification of the sub-beam body 2, which reduces the processing cost and the use cost and improves the compatibility and expansibility.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. That is, any equivalent changes and modifications made according to the content of the patent application scope of the present invention should belong to the technical scope of the present invention.

Claims

1. An assembled truss arm for a crane, characterized in that: The invention comprises two main beams (1), the two main beams (1) are arranged in parallel and symmetrically, a sub-beam is arranged between the two main beams (1), a reinforcing plate (3) is arranged on one side of the main beam (1), a plurality of groups of connecting slots are evenly arranged along the length direction on the reinforcing plate (3), each group of connecting slots comprises at least three T-shaped slots (4) arranged at equal intervals, the T-shaped slots (4) are arranged along the width direction of the reinforcing plate (3) and do not penetrate through the width direction of the reinforcing plate (3), and the two ends of the sub-beam are respectively connected to the corresponding connecting slots on the two main beams (1).

2. The assembled truss arm for a crane according to claim 1, characterized in that: A connecting hole (5) is provided on the plane at the bottom end of the T-shaped slot (4).

3. The assembled truss boom for a crane according to claim 2, characterized in that: The sub-beam comprises a sub-beam body (2), first T-shaped connecting blocks (6) are symmetrically arranged on both sides of the end of the sub-beam body (2), the first T-shaped connecting blocks (6) are adapted to the T-shaped slots (4), and the distance between the two first T-shaped connecting blocks (6) is twice the distance between two adjacent T-shaped slots (4).

4. The assembled truss boom for a crane according to claim 2, characterized in that: The sub-beam comprises a sub-beam body (2), first T-shaped connecting blocks (6) are symmetrically arranged on both sides of the end of the sub-beam body (2), the first T-shaped connecting blocks (6) are adapted to the T-shaped slots (4), the spacing between two first T-shaped connecting blocks (6) is twice the spacing between two adjacent T-shaped slots (4), the interior of the sub-beam body (2) is arranged as a hollow cavity (21), and an extension beam (9) is slidably arranged in the cavity (21).

5. The assembled truss arm for a crane according to claim 4, characterized in that: A second T-shaped connecting block (10) is provided at one end of the extension beam (9), the second T-shaped connecting block (10) being compatible with the T-shaped slot (4), a plurality of first locking holes (13) evenly and equidistantly distributed are provided on the extension beam (9), a plurality of second locking holes (22) are provided on the auxiliary beam body (2), and the first locking holes (13) and the second locking holes (22) can be locked and connected by means of a quick locking pin (14).

6. The assembled truss boom for a crane according to claim 3, characterized in that: A first fixing block (7) is provided at the upper end of the first T-shaped connecting block (6), and a first fixing hole (8) is provided on the first fixing block (7), and the first fixing hole (8) is adapted to the connecting hole (5).

7. The assembled truss boom for a crane according to claim 5, characterized in that: A second fixing block (11) is provided at the upper end of the second T-shaped connecting block (10), and a second fixing hole (12) is provided on the second fixing block (11), and the second fixing hole (12) is adapted to fit the connecting hole (5).

8. The assembled truss boom for a crane according to claim 1, characterized in that: A pedal assembly is provided on a side of the main beam (1) facing away from the reinforcing plate (3), the pedal assembly comprising an anti-skid plate (15) and a plurality of support rods (16), the plurality of support rods (16) being arranged at intervals and all connected to the main beam (1), the anti-skid plate (15) being arranged on the plurality of support rods (16), and a guardrail (17) being arranged on the anti-skid plate (15).

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