Large solid wood reinforcing support pole

Abstract

The utility model discloses a large -scale solid wood reinforced support rod belongs to large -scale structural member manufacturing technical field, including seamless steel pipe and the connecting plug of seamless steel pipe both ends, still include solid wood core shaft, the solid wood core shaft is inserted in the seamless steel pipe, and with the interference fit of seamless steel pipe, the connecting plug one end is equipped with the step, is used to form the convex part in the connecting plug one end middle, the convex part is inserted in the seamless steel pipe, the butt joint of seamless steel pipe with the connecting plug all is equipped with the bevel, is used for the seamless steel pipe and connecting plug welding fixed together. The utility model discloses can improve the structure strength while also can reduce weight, reduce cost, improve the benefit.

Description

Technical Field

[0001] This utility model belongs to the field of large structural component manufacturing technology, specifically a large solid wood reinforced support rod. Background Technology

[0002] A structural support rod used in large-scale open-pit mining machinery electric shovels is typically manufactured using seamless steel pipes with connecting plugs at both ends, as its load-bearing requirements are not high. However, this support rod is large in size and length, reaching up to 3.8 meters. Traditional hollow seamless steel pipes have limited inherent rigidity, and under combined loads with bending moments, they are prone to inward deformation due to concavity in the middle. To enhance the rigidity and bending capacity of this component, using solid or thick-walled steel would result in a large overall weight, significantly increasing material costs and energy consumption, making it uneconomical. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this utility model provides a large solid wood reinforced support rod. The purpose is to design and manufacture a support rod reinforced with a solid wood core shaft installed inside a seamless steel pipe. On the one hand, it can meet the structural strength requirements, and on the other hand, it can greatly reduce the weight of steel and material costs; it is also more convenient to use.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a large solid wood reinforced support rod, comprising a seamless steel pipe and connecting plugs at both ends of the seamless steel pipe; further comprising a solid wood mandrel; the solid wood mandrel is inserted into the seamless steel pipe and is interference-fitted with the seamless steel pipe; one end of the connecting plug is provided with a step to form an outward protrusion in the middle of one end of the connecting plug, the outward protrusion being inserted into the seamless steel pipe; both the seamless steel pipe and the connecting plug are provided with bevels at their joints for welding and fixing the seamless steel pipe and the connecting plug together.

[0005] As a further optimization, the end of the connecting plug away from the seamless steel pipe is provided with a connecting hole; a removable steel sleeve is provided in the connecting hole.

[0006] As a further optimization, the steel sleeve is interference-fitted into the connecting hole.

[0007] As a further optimization, the end of the solid wood mandrel is provided with a tapered guide head.

[0008] As a further optimization, chamfers are provided at both ends of the connecting hole.

[0009] The advantages of this utility model are as follows: First, the solid wood core shaft is embedded in the seamless steel pipe, which improves the rigidity and prevents the support rod from concave when bearing composite loads, thus ensuring the structural strength; Second, the solid wood core shaft is embedded in the seamless steel pipe, which reduces the amount of steel used and lowers the manufacturing cost; Third, the support rod is lighter and more convenient to use.

[0010] In summary, this invention can improve structural strength while also reducing weight, lowering costs, and increasing efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0012] Figure 2 This is a partial structural diagram of an embodiment of the present invention.

[0013] In the diagram: 1. Seamless steel pipe; 2. Steel sleeve; 3. Connecting plug; 4. Solid wood mandrel; 41. Conical guide head. Detailed Implementation

[0014] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some preferred embodiments of this utility model, and not all embodiments. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model, and are not intended to limit the protection scope of this utility model.

[0015] Example; please refer to Figure 1-2 This utility model provides a large solid wood reinforced support rod, which includes a seamless steel pipe 1 and connecting plugs 3 at both ends of the seamless steel pipe 1; it also includes a solid wood mandrel 4; the solid wood mandrel 4 is inserted into the seamless steel pipe 1 and is interference-fitted with the seamless steel pipe 1; one end of the connecting plug 3 is provided with a step to form an outward protrusion in the middle of one end of the connecting plug 3, and the outward protrusion is inserted into the seamless steel pipe 1; both the seamless steel pipe 1 and the connecting plug 3 are provided with bevels at their joints for welding and fixing the seamless steel pipe 1 and the connecting plug 3 together.

[0016] In use, first machine installation steps into both ends of the connecting plug 3 and the seamless steel pipe 1. Then, install the solid wood mandrel 4 into the inner diameter of the seamless steel pipe 1. Hardwood can be used for the solid wood, and it should be dried and treated to remove insects. Tapered guide heads 41 should be machined into both ends of the solid wood mandrel 4 for easy installation. The outer diameter of the solid wood mandrel 4 is slightly larger than the inner diameter of the seamless steel pipe 1. Press the solid wood mandrel 4 into the seamless steel pipe 1 with pressure, so that the solid wood mandrel 4 is tightly against the inner diameter of the seamless steel pipe 1. Then, insert the left and right connecting plugs 3 into the steps reserved in the seamless steel pipe 1 so that the ends of the connecting plugs 3 are inserted into the seamless steel pipe 1. Then, weld the connecting plugs 3 and the two ends of the seamless steel pipe 1 together by welding. There should be no gaps in the weld to prevent moisture and insects from entering the solid wood mandrel 4 during later use. Finally, cold-install the steel sleeve 2 into the connecting holes of the left and right plugs. In subsequent use, when the support rod and other components are connected by steel pins, if the inner hole of the steel sleeve 2 wears due to stress, simply replace the steel sleeve 2 to avoid directly wearing down the hole of the connecting plug and increase the service life of the support rod.

[0017] At least the connecting plug 3 needs to be stepped so that the protruding part of the connecting plug 3 can be inserted into the seamless steel pipe 1. The advantages are: first, it increases the connection strength; second, it increases the sealing area, protecting the solid wood core 4; and third, it keeps the weld seam away from the solid wood core 4, avoiding damage to the solid wood core 4 from the high temperature of welding. To facilitate cold installation of the steel sleeve 2, chamfers are provided at both ends of the connecting hole, making installation more convenient.

[0018] The advantages of this embodiment are as follows: First, the solid wood mandrel 4 is embedded inside the seamless steel pipe 1, which increases rigidity and prevents the support rod from concave under combined loads, ensuring structural strength. Second, the solid wood mandrel 4 is embedded inside the seamless steel pipe 1, reducing steel usage and lowering manufacturing costs. Third, the support rod is lighter, making it more convenient to use. In summary, this embodiment can significantly reduce the weight of the support rod, improve structural strength, reduce weight, lower costs, and increase efficiency.

[0019] The parts of this utility model not described in detail are prior art; for those skilled in the art, the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A large solid wood reinforced support rod, comprising a seamless steel pipe (1) and connecting plugs (3) at both ends of the seamless steel pipe (1); characterized in that: It also includes a solid wood mandrel (4); the solid wood mandrel (4) is inserted into the seamless steel pipe (1) and is interference-fitted with the seamless steel pipe (1); The connecting plug (3) has a step at one end, which is used to form an outward protrusion in the middle of one end of the connecting plug (3). The outward protrusion is inserted into the seamless steel pipe (1). The seamless steel pipe (1) and the connecting plug (3) are both provided with bevels, which are used to weld the seamless steel pipe (1) and the connecting plug (3) together.

2. The large solid wood reinforced support rod according to claim 1, characterized in that: The connecting plug (3) has a connecting hole at the other end away from the seamless steel pipe (1); a detachable steel sleeve (2) is provided in the connecting hole.

3. The large solid wood reinforced support rod according to claim 2, characterized in that: The steel sleeve (2) is interference-fitted into the connecting hole.

4. The large solid wood reinforced support rod according to claim 1, characterized in that: The end of the solid wood mandrel (4) is provided with a tapered guide head (41).

5. The large solid wood reinforced support rod according to claim 2, characterized in that: Both ends of the connecting hole are chamfered.

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