A sliding adjustment for a high jump stand

Abstract

The utility model discloses a high jump support of sliding regulation realizes the automation and light weight operation of height regulation process through gravity balance system: utilize the mass matching relation of counterweight and adjustment frame subassembly, slow down the descent speed of adjustment frame subassembly, the force required for manual adjustment has been reduced significantly, the combination of fixed pulley and traction steel wire converts the tension in vertical direction into horizontal transmission power, and the smooth sliding of the sliding block along the lifting track, effectively eliminates the friction resistance and inertia impact of traditional mechanical structure, not only greatly simplifies the operation process, but also fundamentally avoids the equipment jitter or overturning risk caused by load mutation, and guarantees the stability and positioning accuracy of high jump cross bar at any height position, provides safe and reliable training environment for athletes.

Description

Technical Field

[0001] This utility model relates to the field of sports equipment technology, and in particular to a sliding adjustable high jump support. Background Technology

[0002] High jump is a common track and field sport, and its rules require athletes to successfully clear a bar as it is continuously raised. Therefore, high jump supports need to have a convenient and reliable bar height adjustment function. Traditional high jump supports typically use a pin-type or snap-on structure, where the height is fixed by manually adjusting the bar support component into a pre-set hole or slot on the upright.

[0003] However, these traditional adjustment methods have many inconveniences. First, when adjusting the height, especially when a large adjustment is required, the operator must exert considerable effort to lift the entire adjustment frame assembly to overcome its weight, making the operation quite strenuous. This is particularly inconvenient for users with weaker strength or in training scenarios requiring frequent adjustments. Second, during the adjustment process, the heavy adjustment frame assembly poses a risk of accidental slippage, potentially injuring the operator or damaging the equipment, raising concerns about safety. Furthermore, traditional adjustment structures often require precise alignment of the holes when locking after raising or lowering, which is not only time-consuming but also prone to insecure fixing due to misalignment, affecting the stability of the crossbar and potentially interfering with athletes' competitions or training. Therefore, existing technology needs further improvement and enhancement. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a sliding adjustable high jump support to solve one or more problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sliding adjustable high jump support, comprising: a vertically arranged column, the outer wall of which is provided with a lifting track along the height direction; an adjustment frame assembly, including an adjustment bracket, a slider, and a support for supporting the high jump crossbar, wherein the slider is engaged with the lifting track and moves up and down along it; a fixed pulley, rotatably mounted on the top of the column; and a traction steel wire, wound around the fixed pulley, with its two ends respectively connected to a counterweight and the adjustment bracket, wherein the counterweight is movably arranged inside the column and its mass is less than that of the adjustment frame assembly.

[0006] In one embodiment of the present invention, a locking mechanism is further included, the locking mechanism comprising: a plurality of locking holes arranged in a row on the side wall of the column; and a locking pin passing through the adjusting bracket, the locking pin being selectively inserted into any locking hole to fix the height of the adjusting bracket assembly.

[0007] In one embodiment of the present invention, the bottom end of the column is fixed to the base by a connecting seat, the top end of the connecting seat is provided with an installation groove that matches the cross-section of the column, and the top surface of the connecting seat supports the adjustment bracket to limit the position of the adjustment bracket.

[0008] In one embodiment of the present invention, the corner of the base is provided with a detachable foot cup.

[0009] In one embodiment of this utility model, a mounting base is fixed to the top opening of the column by screws, and the fixed pulley is rotatably disposed within the mounting base.

[0010] In one embodiment of this utility model, the inner wall of the column is provided with a plurality of vertical screw holes in the circumferential direction, and the outer periphery of the counterweight extends to form a limiting protrusion. The limiting protrusion slides into the gap between adjacent vertical screw holes to limit the axial rotation of the counterweight.

[0011] As described above, the sliding adjustable high jump support of this invention has the following beneficial effects: By connecting the adjustment frame assembly to a relatively lightweight counterweight via a traction steel wire and a fixed pulley, the user can overcome part of the weight of the adjustment frame assembly when adjusting the height of the crossbar, achieving effortless, smooth, and stable stepless lifting. This structure significantly reduces operational intensity, improves adjustment efficiency and user experience, and avoids the risk of the adjustment frame assembly accidentally falling during lifting, thus enhancing the safety and reliability of the equipment. The entire system has a compact structure, with the counterweight built into the column, optimizing space utilization while ensuring functionality, resulting in a neat appearance and stable operation of the support. Attached Figure Description

[0012] 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.

[0013] Figure 1 A schematic diagram of the sliding adjustable high jump support provided by this utility model; Figure 2 Exploded view of the sliding adjustable high jump support provided by this utility model; Figure 3 for Figure 2 Enlarged view of detail A in the middle; Figure 4 for Figure 2 A magnified view of detail B in the middle; Figure 5 for Figure 2 Enlarged view of detail C in the middle; Figure 6 for Figure 2 A magnified view of detail D.

[0014] Component designation explanation 1. Column; 2. Lifting rail; 3. Adjusting bracket; 4. Slider; 5. Rod support; 6. Fixed pulley; 7. Traction wire; 8. Locking pin; 9. Connecting seat; 10. Base; 11. Mounting groove; 12. Foot cup; 13. Mounting seat; 14. Vertical screw hole; 15. Limiting protrusion; 16. Counterweight; 17. End cap. Detailed Implementation

[0015] This utility model provides a sliding adjustable high jump support. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following detailed description is provided with reference to the accompanying drawings and embodiments. In the description of this utility model, it should be understood that the terms "up," "down," "left," and "right," etc., 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; they should not be construed as limitations on this utility model. Furthermore, the terms "installation," "connection," etc., 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.

[0016] Please see Figures 1 to 6 This utility model provides a sliding adjustable high jump support, including: a vertically arranged column 1, the outer side wall of which is provided with a lifting track 2 along the height direction; the column 1 is made of hollow irregular tube or cylindrical metal profile and is vertically erected, and its side wall is milled or welded with a protruding guide rail as the lifting track 2 along the height direction.

[0017] The adjustment frame assembly includes an adjustment bracket 3, a slider 4, and a support 5 for supporting the high jump bar. The slider 4 is engaged with the lifting rail 2 and moves up and down along it. The support 5 can be an L-shaped metal plate, with one end fixed to the side wall of the adjustment bracket 3 by bolts, and the other end extending upward to form a horizontal groove for supporting the high jump bar. A fixed pulley 6 is rotatably mounted on the top of the column 1. A traction steel wire 7 is wound around the fixed pulley 6, with both ends connected to a counterweight 16 and the adjustment bracket 3, respectively. The counterweight 16 is movably disposed inside the column 1 and has a mass less than that of the adjustment frame assembly.

[0018] It also includes a locking mechanism, which comprises: a plurality of locking holes arranged in a row on the side wall of the column 1; and a locking pin 8 passing through the adjusting bracket 3. The locking pin 8 is selectively inserted into any locking hole to fix the height of the adjusting frame assembly. More specifically, the locking holes are an array of through holes formed by equidistant punching or drilling along the lifting track 2 on the side wall of the column 1, with the hole diameter clearance matching the diameter of the locking pin 8. The locking pin 8 is a stainless steel pin with a pentagonal head handle, which forms a lock after being inserted into the locking hole; the exposed handle facilitates operation.

[0019] The bottom end of the column 1 is fixed to the base 10 via a connecting seat 9. The top of the connecting seat 9 has a mounting groove 11 that matches the cross-section of the column 1, and the top surface of the connecting seat 9 supports the adjusting bracket 3 to limit its position. The base 10, as a platform providing stable support, is constructed of heavy steel plates or cross-shaped profiles to lower the overall center of gravity. The connecting seat 9 is a casting or machined part with a mounting groove 11 on its upper part. The shape of the mounting groove 11 closely matches the cross-section of the column 1, achieving a small-clearance fit. The bottom end of the column 1 is inserted into the mounting groove 11 and permanently fixed by welding or through bolts. The top surface of the connecting seat 9 is machined into a flat supporting surface. When the adjusting bracket 3 descends to its lowest position, its bottom rests on this supporting surface, thus being reliably supported. This not only limits the downward position of the adjusting bracket assembly and prevents it from impacting the base 10, but also enhances the stability of the entire structure by sharing part of the load.

[0020] A mounting base 13 is fixed to the top opening of the column 1 by screws, and the fixed pulley 6 is rotatably disposed within the mounting base 13. Specifically, the inner wall of the column 1 has several vertical screw holes 14 circumferentially arranged, and the outer periphery of the counterweight 16 extends to form a limiting protrusion 15. The limiting protrusion 15 slides within the gap between adjacent vertical screw holes 14 to limit the axial rotation of the counterweight 16. Specifically, the mounting base 13 is an independent cap-shaped part whose outer edge shape matches the inner cavity of the column 1, and is fixed to the wall of the column 1 by circumferentially distributed screws. The mounting base 13 has side wing plates designed inside for mounting the pulley shaft and bearing of the fixed pulley 6, effectively transmitting the radial force of the wire rope on the fixed pulley 6 to the column 1, rather than being borne solely by the thin-walled end of the column 1, making the structure more stable and durable.

[0021] The inner wall of the column 1 is provided with several vertical screw holes 14. The outer periphery of the counterweight 16 extends to form a limiting protrusion 15. The limiting protrusion 15 slides into the gap between adjacent vertical screw holes 14 to restrict the axial rotation of the counterweight 16. Multiple vertical screw holes 14, evenly distributed circumferentially and extending vertically, are pre-drilled on the inner wall of the column 1. These vertical screw holes 14 can originally be used to fix the mounting base 13. Furthermore, the vertical screw holes 14 naturally form continuous raised ribs (threads) and recessed gaps on the inner wall of the column 1. The limiting protrusion 15, with a diameter slightly smaller than the gap between two adjacent rows of vertical screw holes 14, ensures that when the counterweight 16 is placed inside the column 1, its limiting protrusion 15 is constrained within the gap channel of the vertical screw holes 14 and cannot rotate, thus ensuring that the counterweight 16 can only move vertically up and down, increasing stability.

[0022] The base 10 has detachable foot cups 12 at its corners. Each foot cup 12 is an adjustable support device installed at each corner of the base 10. Each foot cup 12 includes a threaded rod portion connected to the base 10 and a wider cup-shaped base portion that contacts the ground. By rotating the foot cup 12, its length extending out of the base 10 can be adjusted, allowing for fine-tuning of the levelness of the support in uneven terrain, ensuring the verticality of the column 1 and the horizontality of the crossbar. The detachable foot cups 12 facilitate transportation and replacement; in this embodiment, they are screwed into threaded holes on the base 10.

[0023] In this embodiment, an end cap 17 is installed at the top opening of the adjusting bracket 3. The top of the end cap 17 is rounded, which can prevent the high jump bar from getting caught on the end after the athlete touches it and thus ensure that the bar can fall according to the rules, thereby accurately determining the success or failure of the jump. On the other hand, the rounded top of the end cap 17 also eliminates sharp edges, improves the safety of the athlete when clearing the bar, and makes the competition process smoother.

[0024] Optionally, the adjusting bracket 3 is provided with at least two rod supports 5 arranged in a row along the height direction. Specifically, one rod support 5 is installed at each of the upper and lower ends of the adjusting bracket 3. The design of multiple rod supports 5 can meet different height requirements and improve the applicability of the bracket.

[0025] In summary, the sliding adjustable high jump support of this invention, by setting a counterweight 16 with a smaller mass than the adjustment frame assembly, and cooperating with the fixed pulley 6 and traction steel wire 7 to form a gravity reduction system, can effectively offset part of the weight of the adjustment frame assembly, making the height adjustment process more labor-saving and convenient. A single person can easily operate it to achieve precise height adjustment. At the same time, the adjustment frame assembly, through the locking engagement of the slider 4 and the lifting rail 2 of the column 1, ensures the stability of the lifting process, avoids tilting and swaying, helps maintain the horizontal state of the high jump bar, and reduces the risk of the bar falling off during adjustment. The overall structural design is simple, requiring no complex drive device, reducing equipment cost and maintenance difficulty, and can efficiently meet the needs of convenience and stability for bar height adjustment in high jump training and competition. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0026] 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. A sliding adjustable high jump support, characterized in that, include: A vertically installed column (1) has a lifting track (2) on its outer wall along the height direction; The adjustment frame assembly includes an adjustment bracket (3), a slider (4), and a support (5) for supporting the high jump bar. The slider (4) is engaged with the lifting rail (2) and moves up and down along it. A fixed pulley (6) is mounted on the top of the column (1) and rotates. The traction steel wire (7) is wound around the fixed pulley (6), and the two ends are respectively connected to the counterweight (16) and the adjustment bracket (3). The counterweight (16) is movably set inside the column (1) and its mass is less than that of the adjustment bracket assembly.

2. The sliding adjustable high jump support according to claim 1, characterized in that, It also includes a locking mechanism, which comprises: A row of locking holes are arranged on the side wall of the column (1); A locking pin (8) is inserted through the adjusting bracket (3), and the locking pin (8) is selectively inserted into any locking hole to fix the height of the adjusting bracket assembly.

3. The sliding adjustable high jump support according to claim 1, characterized in that, The bottom end of the column (1) is fixed to the base (10) by the connecting seat (9). The top of the connecting seat (9) is provided with an installation groove (11) that matches the cross-section of the column (1), and the top surface of the connecting seat (9) supports the adjustment bracket (3) to limit the position of the adjustment bracket (3).

4. The sliding adjustable high jump support according to claim 3, characterized in that, The base (10) is provided with a detachable foot cup (12) at the corner.

5. The sliding adjustable high jump support according to claim 1, characterized in that, The top opening of the column (1) is fixed with a mounting base (13) by screws, and the fixed pulley (6) is rotatably mounted in the mounting base (13).

6. The sliding adjustable high jump support according to claim 5, characterized in that, The inner wall of the column (1) is provided with several vertical screw holes (14) and the outer periphery of the counterweight (16) extends to form a limiting protrusion (15). The limiting protrusion (15) slides in the gap between adjacent vertical screw holes (14) to limit the axial rotation of the counterweight (16).

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