Hurdle frame convenient to adjust

Abstract

The utility model discloses a hurdle frame convenient to adjust, which is characterized in that a foot stool bottom pipe and an insertion hole array of an expansion bracket are matched with a bolt to form an axial locking mechanism, so that the span of a base can be quickly adjusted and accurately fixed by sliding the expansion bracket, and the adaptability to different site conditions is enhanced; the inner and outer upright column sleeving structure of the upright frame is radially restrained by the limiting ribs and the limiting grooves, so that the vertical alignment precision of the upright frame and the bottom pipe is ensured while the height is freely adjusted, and the shaking risk caused by assembly deviation is avoided; according to the elastic clamping connector at the top, elastic pre-clamping of the C-shaped clamping groove is combined with rigid reinforcement of the locking screw hole, so that the transverse plate can be rapidly installed by hands, and stable connection can be kept under impact.

Description

Technical Field

[0001] This utility model relates to the field of sports equipment technology, and in particular to an easily adjustable hurdle. Background Technology

[0002] Hurdles are crucial equipment in track and field training and competition, primarily used to verify athletes' hurdling height and technical technique in hurdling events. Traditional hurdles typically consist of a base, uprights, and an adjustable crossbar, with their height requiring adaptive adjustments based on different competition rules or training needs. However, existing hurdles still have significant shortcomings in structural design and functionality: for example, height adjustment relies on replacing the entire upright or fixing it with individual knobs, which is cumbersome and prone to component damage; the base has poor expandability, making it difficult to adapt to different ground conditions or stability requirements; and the connecting structure lacks rigidity, making it prone to displacement or deformation during collisions. Furthermore, traditional hurdles have low modularity, remaining bulky even after disassembly, resulting in high transportation and storage costs. Therefore, there is an urgent need for a hurdle design that enables rapid and precise adjustment, possesses a stable expandable structure, and is easy to disassemble and store, in order to improve training efficiency, equipment reliability, and operational flexibility. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an easily adjustable hurdle frame to solve the problem that the existing hurdle frames lack a stable expansion structure and are limited in use scenarios.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an easily adjustable hurdle frame, comprising a base tube, an upright frame, and an extension bracket. The upright frame is detachably connected to the near end of the base tube, and the extension bracket is sleeved at the far end of the base tube. The extension bracket has an axially arranged array of first insertion holes, and the base tube has positioning holes that are axially locked to the selected first insertion holes by means of a first pin. The upright frame includes an outer column and an inner column that are coaxially sleeved. The bottom of the inner column is fixed to a connector, and the connector has radially arranged limiting ribs that cooperate with the limiting grooves at the top of the base tube. The tops of the two outer columns are provided with elastic clamping joints, which have C-shaped slots and locking screw holes that pass through the C-shaped slots. A horizontal plate is clamped and fixed between the two C-shaped slots.

[0005] In one embodiment of the present invention, the inner column and the connector are connected by threaded fasteners, and a second pin is provided between the outer column and the inner column, which penetrates the second insertion hole and the second insertion hole is arranged in a row along the column axis.

[0006] In one embodiment of this utility model, a reinforcing horizontal tube is horizontally welded between the two upright frames, and the reinforcing horizontal tube is located near the bottom of the upright frame.

[0007] In one embodiment of this utility model, the end of the extension bracket is provided with an anti-slip rubber sleeve, and the outer diameter of the rubber sleeve forms a 0.5-1mm gap fit with the inner wall of the bottom tube of the leg.

[0008] In one embodiment of the present invention, the end of the extension bracket is provided with a lateral extension arm, the lateral extension arm is connected to the extension bracket through a sliding groove, and a movable fastener is provided in the sliding groove to adjust the unfolded length of the lateral extension arm.

[0009] As described above, the easily adjustable hurdle frame of this utility model has the following beneficial effects: Through the synergistic effect of modular structural design and multi-level locking mechanism, adjustment efficiency and usage stability are significantly improved. The base tube of the frame and the extension bracket adopt an axial locking method using a first insertion hole array and a first pin, allowing for quick adjustment and precise fixing of the base span via the sliding extension bracket, enhancing adaptability to different site conditions. The coaxial sleeve structure of the inner and outer columns of the upright frame, combined with the radial constraint of the limiting ribs and limiting grooves, achieves both free height adjustment and ensures vertical alignment of the upright frame and the base tube through the rib groove cooperation, avoiding shaking caused by assembly deviations. The C-shaped slot and locking screw hole of the top elastic clamping joint work together to allow the horizontal plate to be elastically clamped and pre-fixed without tool assistance, and then a rigid connection is formed by threaded locking, balancing quick assembly and disassembly with impact resistance. The overall structure, through detachable connection and plug-in locking, achieves multi-dimensional adjustment functions while ensuring load-bearing strength, and each component can be disassembled and stored, significantly reducing transportation and storage space occupation. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A schematic diagram of the adjustable hurdle frame provided by this utility model;

[0012] Figure 2 A schematic diagram of the adjustable hurdle frame provided by this utility model;

[0013] Figure 3 A schematic diagram of the adjustable hurdle frame provided by this utility model;

[0014] Figure 4 A schematic diagram of the adjustable hurdle frame provided by this utility model;

[0015] Figure 5 A schematic diagram of the adjustable hurdle frame provided by this utility model;

[0016] Figure 6 A schematic diagram of the adjustable hurdle frame provided by this utility model.

[0017] Component designation explanation

[0018] 1. Frame base tube; 11. Limiting groove; 2. Upright frame; 21. Outer column; 22. Inner column; 23. Second insertion hole; 3. Extension bracket; 4. First insertion hole; 5. Connector; 51. Limiting rib; 6. Clamping joint; 61. C-shaped slot; 62. Locking screw hole; 7. Horizontal plate; 8. Reinforcing horizontal tube. Detailed Implementation

[0019] This utility model provides an easily adjustable hurdle. To make the purpose, technical solution and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments.

[0020] In the description of this utility model, it should be understood that the terms "up, down, left, right" and other indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation" and "connection" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Please see Figures 1 to 6 This utility model provides an easily adjustable hurdle frame, including a base tube 1, an upright frame 2, and an extension bracket 3. The upright frame 2 is detachably connected to the near end of the base tube 1, and the extension bracket 3 is sleeved on the far end of the base tube 1. The extension bracket 3 is axially provided with an array of first insertion holes 4. The base tube 1 is provided with a positioning hole and forms an axial lock with the selected first insertion hole 4 through a first pin. The upright frame 2 includes an outer column 21 and an inner column 22 coaxially sleeved. The bottom of the inner column 22 is fixed to a connector 5. The connector 5 is provided with radially arranged limiting ribs 51, which cooperate with the limiting groove 11 at the top of the base tube 1. The top ends of the two outer columns 21 are provided with elastic clamping joints 6. The clamping joints 6 are provided with C-shaped slots 61 and locking screw holes 62 passing through the C-shaped slots 61. A horizontal plate 7 is clamped and fixed between the two C-shaped slots 61. Optionally, the connector 5 is also fixed to the base tube of the leg by welding, thereby forming a non-removable fixed connection, which enhances structural stability and prevents loosening or displacement during use.

[0022] The inner column 22 is connected to the connector 5 via threaded fasteners, and a second pin is provided between the outer column 21 and the inner column 22, penetrating a second insertion hole 23. The second insertion holes 23 are arranged in a row along the column axis. The threaded fastener connection between the inner column 22 and the connector 5 enhances the structural strength in the vertical direction and prevents loosening after long-term use. The second pin between the outer column 21 and the inner column 22 cooperates with the row of axial insertion holes to further refine the height adjustment accuracy and prevent column slippage. At the same time, the row distribution design of the insertion holes allows users to select different height levels according to their needs, improving adjustment flexibility. This design strengthens the compressive stability and height positioning reliability of the upright frame 2.

[0023] A reinforcing horizontal tube 8 is horizontally welded between the two upright frames 2, and the reinforcing horizontal tube 8 is located near the bottom of the upright frame 2. The reinforcing horizontal tube 8 added between the two upright frames 2 forms a triangular support structure through welding, which significantly improves the overall lateral force resistance of the hurdle frame, especially in the stress concentration area at the bottom. In case of collision or excessive pressure, it can effectively prevent deformation or tipping. The placement of the reinforcing horizontal tube 8 near the bottom further optimizes the mechanical distribution and ensures the stability of the hurdle frame during high-intensity use.

[0024] The extension bracket 3 is equipped with an anti-slip rubber sleeve at its end, with the outer diameter of the rubber sleeve forming a 0.5-1mm gap fit with the inner wall of the base tube 1 of the tripod. The anti-slip rubber sleeve at the end of the extension bracket 3, through frictional contact with the inner wall of the base tube 1, prevents the extension bracket 3 from slipping off and avoids wear caused by direct contact between metal parts. The 0.5-1mm gap design balances ease of assembly with the need for axial fine-tuning. The rubber sleeve also acts as a buffer, reducing damage to the bracket from ground impacts and extending its service life.

[0025] The extension bracket 3 has a lateral extension arm at its end, which is connected to the extension bracket 3 via a sliding groove. A movable fastener is installed within the sliding groove to adjust the extended length of the lateral extension arm. The lateral extension arm at the end of the extension bracket 3 can be adjusted in length via the sliding groove and fastener, allowing the hurdle frame to flexibly adapt to different scenarios, such as shortening it in narrow spaces or extending it in wide open spaces. The sliding groove design allows the extension arm position to be fixed as needed, while the fastener ensures the stability of the adjusted structure, enhancing the adaptability and practicality of the hurdle frame in complex environments.

[0026] In summary, this utility model's easily adjustable hurdle frame, through its modular design and multi-stage adjustment mechanism, significantly improves the adaptability and ease of operation. The base tube 1 and extension bracket 3, connected by an axial first pin and an array of second insertion holes 23, allow for rapid adjustment of the leg length, adapting to different site conditions or user needs without tools. The upright frame 2 employs an inner and outer column 21 sleeve structure, combined with the connecting piece 5's limiting rib 51 and the base tube 1's limiting groove 11, ensuring both flexibility in height adjustment and effective prevention of axial rotation of the uprights, guaranteeing vertical stability. The elastic clamping connector 6, through the linkage design of the C-shaped slot 61 and the locking screw hole 62, allows the horizontal plate 7 to be fixed simply by tightening the screw hole, simplifying the traditional fastener operation process. Simultaneously, the elastic material properties allow for adaptation to horizontal plates 7 of varying thicknesses and reduce component wear. The overall structure, through detachable connections and a multi-directional adjustment mechanism, balances rapid assembly and disassembly, stable support, and applicability to various scenarios, effectively improving the efficiency and safety of the hurdle frame. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0027] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. An easily adjustable hurdle, characterized in that: The system includes a tripod base tube (1), an upright frame (2), and an extension bracket (3). The upright frame (2) is detachably connected to the near end of the tripod base tube (1). The far end of the tripod base tube (1) is fitted with the extension bracket (3). The extension bracket (3) has an axially arranged array of first insertion holes (4). The tripod base tube (1) has a positioning hole and is axially locked to the selected first insertion hole (4) by a first pin. The upright frame (2) includes an outer column (21) and an inner column (22) coaxially fitted together. The bottom of the inner column (22) is fixed to the connector (5). The connector (5) is provided with radially arranged limiting ribs (51). The limiting ribs (51) cooperate with the limiting groove (11) at the top of the bottom tube (1) of the frame. The top of the two outer columns (21) is provided with elastic clamping joints (6). The clamping joints (6) are provided with C-shaped slots (61) and locking screw holes (62) that pass through the C-shaped slots (61). A horizontal plate (7) is clamped and fixed between the two C-shaped slots (61).

2. The adjustable hurdle frame according to claim 1, characterized in that, The inner column (22) is connected to the connector (5) by threaded fasteners, and a second pin is provided between the outer column (21) and the inner column (22) through the second insertion hole (23), and the second insertion holes (23) are arranged in rows along the column axis.

3. The adjustable hurdle frame according to claim 1, characterized in that, A reinforcing horizontal tube (8) is horizontally welded between the two upright frames (2), and the reinforcing horizontal tube (8) is set near the bottom of the upright frame (2).

4. The adjustable hurdle frame according to claim 1, characterized in that, The extension bracket (3) is provided with an anti-slip rubber sleeve at its end, and the outer diameter of the rubber sleeve forms a 0.5-1mm gap fit with the inner wall of the footplate bottom tube (1).

5. The adjustable hurdle frame according to claim 1, characterized in that, The extension bracket (3) has a lateral extension arm at its end. The lateral extension arm is connected to the extension bracket (3) through a sliding groove. The sliding groove is provided with a movable fastener to adjust the unfolded length of the lateral extension arm.

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