Novel wind vibration turbulent flow hole structure

Abstract

The utility model discloses a novel wind vibration turbulent flow hole structure which comprises a long edge, a transition bevel edge and an arc edge. A plurality of wind vibration turbulent flow holes are formed in a web plate of the large pull rod in the length direction of the web plate, and each wind vibration turbulent flow hole is in a shuttle shape defined by two long edges, two arc edges and four transition bevel edges. The two long edges are horizontally aligned in parallel at intervals up and down, and are respectively arranged in the length direction of the large pull rod web; the two arc edges are symmetrically arranged on the left side and the right side of the corresponding long edge, and it is ensured that the circle center of the two arc edges and the distance center between the two long edges are collinear. The inner arc faces of the two arc edges are arranged in the direction of the corresponding long edges, and the diameters of the inner arc faces are smaller than the distance between the two corresponding long edges. The distance between the circle centers of the two arc edges is larger than the length of the corresponding long edge, and the two ends of each long edge are connected with the corresponding ends of the corresponding arc edges through transition bevel edges respectively, so that a shuttle shape is defined. According to the utility model, the structure mutation is reduced, and the force flow transmission becomes gentle.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a novel wind vibration spoiler hole structure. Background Art

[0002] At present, with the rapid development of ocean and inland river transportation industries, the domestic control of energy consumption, terminal infrastructure costs, and equipment lightweighting has become increasingly strict. There is an urgent need for a loading and unloading equipment that can meet the requirements of modern port terminals and has low equipment investment costs and low energy consumption. A gantry crane is a jib crane whose bridge is supported on a ground track or foundation by legs on both sides. It runs along the ground track, and a railway vehicle or other ground vehicle can pass below. The rotatable lifting device is installed on the gantry frame.

[0003] The large tie rod of a four-link portal crane is usually a slender box beam structure. In order to avoid wind vibration, multiple long waist-shaped spoiler holes are usually designed on the web of the large tie rod. However, the traditional long waist-shaped spoiler holes will cause structural stress concentration, which is very likely to cause fatigue cracks and pose a huge hidden danger to safe production. Therefore, the above problems need to be solved urgently. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a new type of wind-vibration spoiler hole structure, which greatly reduces structural mutations compared to traditional spoiler holes, and makes the force flow transmission smooth, thereby almost eliminating stress concentration.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a new type of wind vibration spoiler hole structure of the utility model, its innovation lies in: including long sides, transition bevel sides and arc sides; on the horizontally and laterally placed large tie rod web, several wind vibration spoiler holes are embedded and opened in sequence along its length direction, and each of the wind vibration spoiler holes is shuttle-shaped surrounded by two long sides, two arc sides and four transition bevel sides; the two long sides of each wind vibration spoiler hole are horizontally and parallelly aligned at intervals up and down, and are respectively arranged along the length direction of the large tie rod web; each wind The two arc sides of the vibration spoiler hole are symmetrically arranged on the left and right sides of the corresponding long sides and between the corresponding two long sides, and ensure that the center of the two arc sides and the center of the spacing between the two long sides are arranged in a straight line; the inner arc surfaces of the two arc sides are arranged in the direction of the corresponding long sides, and their diameters are smaller than the spacing between the corresponding two long sides; the spacing between the center of the two arc sides is greater than the length of the corresponding long sides, and the two ends of each long side are connected to the corresponding end of the corresponding arc side through a transition bevel, thereby forming a shuttle-shaped wind vibration spoiler hole.

[0006] Preferably, the distance between the two long sides is the width B of the corresponding wind-vibration spoiler hole, and the length L of each wind-vibration spoiler hole is 3 to 5 times the width B thereof.

[0007] Preferably, the length L1 of each of the long sides is 1 / 6 to 1 / 4 of the length L of the corresponding wind-vibration spoiler hole.

[0008] Preferably, the radius R of each of the arc edges is a They are all 1 / 5 to 1 / 3 of the width B of the wind-vibration spoiler holes.

[0009] Preferably, the connection between each of the long sides and the corresponding transition bevel is an arc transition, and the radius R of the arc transition is b The corresponding arc edge radius R a 5~8 times of.

[0010] Preferably, each of the transition bevel edges is tangentially connected to the corresponding arc edge.

[0011] Preferably, the spacing between adjacent wind-vibration spoiler holes on the web of the large tie rod needs to be greater than the length L of each wind-vibration spoiler hole.

[0012] Preferably, a reinforcing rib ring is provided on the web of the large tie rod relative to each wind-vibration spoiler hole. Each of the reinforcing rib rings is a hollow shuttle-shaped structure matching the corresponding wind-vibration spoiler hole and is arranged around the corresponding wind-vibration spoiler hole to reinforce the corresponding wind-vibration spoiler hole.

[0013] Preferably, the protruding height of each reinforcing rib ring is 20 mm to 50 mm.

[0014] Beneficial effects of the utility model:

[0015] (1) Compared with the traditional spoiler holes, the utility model greatly reduces the structural mutation, and the force flow transmission becomes gentle, thereby almost eliminating the stress concentration;

[0016] (2) According to finite element analysis, the fatigue stress area generated by the utility model is greatly reduced by more than 90% compared with the traditional spoiler holes, and the maximum fatigue stress is also reduced by 35% to 50%, with excellent results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The utility model is a structural schematic diagram of a novel wind-vibration spoiler hole structure.

[0019] Figure 2 It is a schematic diagram of the structure of the utility model when the reinforcing rib ring is removed.

[0020] Among them, 1-large tie rod web; 2-strengthening rib ring; 3-long side; 4-transition bevel side; 5-arc side. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be clearly and completely described below through specific implementation methods.

[0022] The utility model discloses a novel wind-vibration spoiler hole structure, comprising a long side 3, a transition bevel side 4 and an arc side 5; the specific structure is as follows Figure 1 , Figure 2 As shown, a number of wind vibration spoiler holes are embedded and opened in sequence along the length direction of the large tie rod web 1 placed horizontally and transversely, and each wind vibration spoiler hole is a shuttle-shaped hole surrounded by two long sides 3, two arc sides 5 and four transition bevel sides 4; the two long sides 3 of each wind vibration spoiler hole are arranged horizontally and parallelly at intervals up and down, and are arranged along the length direction of the large tie rod web 1 respectively; the two arc sides 5 of each wind vibration spoiler hole are symmetrically arranged on the left and right sides of the corresponding long side 3 and between the corresponding two long sides 3, and it is ensured that the center of the two arc sides 5 and the center of the spacing between the two long sides 3 are arranged in a straight line; the inner arc surfaces of the two arc sides 5 are arranged in the direction of the corresponding long side 3, and their diameters are smaller than the spacing between the corresponding two long sides 3; the spacing between the centers of the two arc sides 5 is greater than the length of the corresponding long side 3, and the two ends of each long side 3 are connected to the corresponding end of the corresponding arc side 5 through the transition bevel sides 4, thereby forming a shuttle-shaped wind vibration spoiler hole. Through the above-mentioned design, the utility model greatly reduces structural mutations compared with traditional spoiler holes, and the force flow transmission becomes smooth, thereby almost eliminating stress concentration.

[0023] like Figure 1 , Figure 2 As shown, the distance between the two long sides 3 is the width B of the corresponding wind-vibration spoiler hole, and the length L of each wind-vibration spoiler hole is 3 to 5 times the width B thereof.

[0024] like Figure 1 , Figure 2 As shown, the length L1 of each long side 3 is 1 / 6 to 1 / 4 of the length L of the corresponding wind-vibration spoiler hole, and the radius R of each arc side 5 is a They are all 1 / 5~1 / 3 of the corresponding wind-vibration spoiler hole width B.

[0025] The connection between each long side 3 and the corresponding transition bevel 4 of the utility model is an arc transition, and the radius R of the arc transition is b The radius R of the corresponding arc side 5 a 5~8 times of Figure 1 , Figure 2 As shown, each transition bevel edge 4 is tangentially connected to the corresponding arc edge 5 .

[0026] like Figure 1 , Figure 2 As shown, the spacing between adjacent wind-vibration spoiler holes on the large tie rod web 1 needs to be greater than the length L of each wind-vibration spoiler hole.

[0027] The utility model also provides a reinforcing rib ring 2 on the web 1 of the large tie rod relative to each wind vibration spoiler hole. Figure 1 , Figure 2 As shown, each reinforcing rib ring 2 is a hollow shuttle-shaped structure matching the corresponding wind vibration spoiler hole, and is arranged around the corresponding wind vibration spoiler hole, thereby reinforcing the corresponding wind vibration spoiler hole. Among them, the protruding height of each reinforcing rib ring 2 is 20mm~50mm.

[0028] According to finite element analysis, compared with traditional spoiler holes, the fatigue stress area generated by the utility model is greatly reduced by more than 90%, and the maximum fatigue stress is also reduced by 35% to 50%, with excellent results.

[0029] Beneficial effects of the utility model:

[0030] (1) Compared with the traditional spoiler holes, the utility model greatly reduces the structural mutation, and the force flow transmission becomes gentle, thereby almost eliminating the stress concentration;

[0031] (2) According to finite element analysis, the fatigue stress area generated by the utility model is greatly reduced by more than 90% compared with the traditional spoiler holes, and the maximum fatigue stress is also reduced by 35% to 50%, with excellent results.

[0032] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A new type of wind-vibration spoiler hole structure, characterized in that: It includes long sides, transition bevel sides and arc sides; a number of wind vibration spoiler holes are embedded and opened in sequence along the length direction of the large tie rod web placed horizontally and transversely, and each of the wind vibration spoiler holes is a shuttle-shaped hole surrounded by two long sides, two arc sides and four transition bevel sides; the two long sides of each wind vibration spoiler hole are arranged horizontally and parallelly with an interval up and down, and are respectively arranged along the length direction of the large tie rod web; the two arc sides of each wind vibration spoiler hole are symmetrically arranged on the left and right sides of the corresponding long side and located between the corresponding two long sides, and it is ensured that the center of the two arc sides and the center of the spacing between the two long sides are arranged in a straight line; the inner arc surfaces of the two arc sides are arranged in the direction of the corresponding long side, and their diameters are smaller than the spacing between the corresponding two long sides; the spacing between the center of the two arc sides is greater than the length of the corresponding long side, and the two ends of each long side are connected to the corresponding end of the corresponding arc side through the transition bevel side, thereby forming a shuttle-shaped wind vibration spoiler hole.

2. According to the novel wind-vibration spoiler hole structure of claim 1, it is characterized by: The distance between the two long sides is the width B of the corresponding wind-vibration spoiler hole, and the length L of each wind-vibration spoiler hole is 3 to 5 times the width B thereof.

3. According to claim 2, the novel wind-vibration spoiler hole structure is characterized in that: The length L1 of each of the long sides is 1 / 6 to 1 / 4 of the length L of the corresponding wind-vibration spoiler hole.

4. The novel wind-vibration spoiler hole structure according to claim 2 is characterized in that: The radius R of each of the arc edges a They are all 1 / 5 to 1 / 3 of the width B of the wind-vibration spoiler holes.

5. The novel wind-vibration spoiler hole structure according to claim 4 is characterized in that: The connection between each of the long sides and the corresponding transition bevel is an arc transition, and the radius of the arc transition is R b The corresponding arc edge radius R a 5~8 times of.

6. The novel wind-vibration spoiler hole structure according to claim 1 is characterized in that: Each of the transition bevel edges is tangentially connected to the corresponding arc edge.

7. The novel wind-vibration spoiler hole structure according to claim 1 is characterized in that: The spacing between adjacent wind-vibration spoiler holes on the web of the large tie rod needs to be greater than the length L of each wind-vibration spoiler hole.

8. The novel wind-vibration spoiler hole structure according to claim 1 is characterized in that: Reinforcement rings are provided on the web of the large tie rod relative to each wind-vibration spoiler hole. Each of the reinforcement rings is a hollow shuttle-shaped structure matching the corresponding wind-vibration spoiler hole and is arranged around the corresponding wind-vibration spoiler hole to reinforce the corresponding wind-vibration spoiler hole.

9. The novel wind-vibration spoiler hole structure according to claim 8 is characterized in that: The protruding height of each reinforcing rib ring is 20mm~50mm.

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