CN110755860B

CN110755860B - Track and field is with hurdle structure of striding with safeguard effect

Info

Publication number: CN110755860B
Application number: CN201911214688.2A
Authority: CN
Inventors: 邢坤权; 张磊; 汪广林; 古晶; 杜媛媛
Original assignee: Henan Polytechnic Institute
Current assignee: Henan Polytechnic Institute
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2021-06-15
Anticipated expiration: 2039-12-02
Also published as: CN110755860A

Abstract

The invention discloses a hurdle frame structure with a protection effect for track and field, which comprises a pair of supporting legs with the same structure, a pair of supporting sleeves with the same structure and a cross beam, wherein the pair of supporting sleeves are respectively arranged on one ends of the pair of supporting legs and are respectively rotatably connected with the supporting legs, the cross beam is arranged between the pair of supporting sleeves, a folding and accommodating mechanism is arranged between the pair of supporting legs and the pair of supporting sleeves, and a flexible buffer mechanism is arranged on the cross beam. The leg injury is avoided, the structure is simple and stable, and the use is quick and convenient.

Description

Track and field is with hurdle structure of striding with safeguard effect

Technical Field

The invention relates to the technical field of sports equipment, in particular to a hurdle frame structure with a protection effect for track and field.

Background

The hurdle running is a sprint running project with fixed number, fixed distance and fixed height hurdles arranged on the way, and is also a project with more complex technology, stronger rhythm and higher exercise value in track and field sports. When engaged in cross-track running, not only can effectively develop physical qualities of speed, bouncing force, flexibility, sensitivity and the like, but also can cultivate the will quality of brave, obstinate and stubborn and overcoming difficulty.

In the use of hurdling for athletic sports training, often adjust training with hurdling height according to the user demand of difference, however because in prior art, athletic sports training is with hurdling overall structure comparatively single, when height-adjusting, stride even stand connection insecure, under the effect of hurdling crossbeam and gravity, hurdling crossbeam slowly descends downwards, cause athletic sports training with hurdling height-adjusting inaccuracy, make the sportsman not reach the training effect, simultaneously in the teaching, the phenomenon that practitioner often appears the shank because unfamiliar and collide the railing panel, because railing panel or intensity is big, the hardness is high, not only cause the injury of practitioner or the damage of hurdle, also can cause the psychological fear for the practitioner, therefore, in view of the above-mentioned problem deep research, the present case produces.

Disclosure of Invention

The invention aims to solve the problems, designs a hurdle frame structure for track and field with a protection effect, and solves the problems that in the prior art, the overall structure of a hurdle for track and field sports training is single, the connection of a hurdle connecting upright post is not firm, the hurdle cross beam slowly falls downwards under the action of the hurdle cross beam and gravity, so that the height of the hurdle for track and field sports training is not accurate, and athletes cannot achieve the training effect, and meanwhile, in the teaching process, a leg part of an exerciser often collides with a hurdle plate due to inexperienced exercise.

The technical scheme of the invention for realizing the aim is as follows: a hurdle frame structure with a protection effect for track and field comprises a pair of supporting legs with the same structure, a pair of supporting sleeves with the same structure and a cross beam, wherein the pair of supporting sleeves are respectively arranged on one ends of the pair of supporting legs and are rotatably connected with the supporting legs;

the folding storage mechanism includes: the folding connection structure and the cushioning support structure;

the folding connection structure is arranged on the side wall of the supporting leg, and the cushioning support structure is arranged on the lower end of the supporting leg;

the adjustable lifting mechanism comprises: the device comprises a sliding rod, an auxiliary connecting structure, a sliding lifting structure and a clamping control structure;

the slide bar activity cartridge in support the cover intraductal, supplementary connection structure installs in on the slide bar upper end, slide lifting structure install in support the cover intraductally, and with the slide bar lateral wall is connected, joint control structure install on the support sleeve lateral wall, and one end with slide lifting structure laminates mutually, the other end stretches out to support the cover outside of the pipe.

The folding connection structure includes: the self-locking connecting hinge, the rotating pin, the connecting sheet and the fixing column are arranged on the base;

one end of the self-locking connecting hinge is fixedly connected with the supporting leg, the other end of the self-locking connecting hinge is fixedly connected with the side wall of the supporting sleeve, one end of the rotating pin is movably inserted on the side wall of the supporting sleeve, one end of the connecting piece is fixedly sleeved on the rotating pin, an arc notch is formed in the other end of the connecting piece, and the fixing column is arranged on the side wall of the supporting leg, corresponds to the rotating pin in position and is matched with the arc notch in the connecting piece.

The cushioning support structure includes: the device comprises a compression spring, supporting legs and a telescopic rod;

the compression spring is arranged on the lower end face of the supporting leg, the supporting leg is arranged on the lower end of the compression spring, and the telescopic rod is arranged in the compression spring, and the upper end and the lower end of the telescopic rod are respectively connected with the supporting leg and the supporting leg.

The sliding lifting structure includes: the pair of sliding limiting assemblies with the same structure and the pair of helical tooth connecting assemblies with the same structure are arranged on the two sides of the sliding limiting assembly;

the pair of sliding limiting assemblies are arranged in the supporting sleeve, are respectively positioned on two sides of the sliding rod and are connected with the side wall of the sliding rod, and the pair of skewed tooth connecting assemblies are arranged on the side wall of the sliding rod, are respectively positioned on two sides of the sliding rod and are attached to the clamping control structure.

The sliding limiting assembly comprises a sliding groove and a sliding rail;

the sliding groove is arranged on the side wall of the sliding rod, and the sliding rail is arranged on the side wall of the supporting sleeve and sleeved in the sliding groove;

the skewed tooth coupling assembling includes: the connecting plate and the helical rack;

the connecting plate is arranged on the side wall of the sliding rod, and the helical rack is arranged on the connecting plate and connected with the clamping control assembly.

The clamping control structure comprises: the fixing shaft, the clamping component and the spherical head are arranged on the fixing shaft;

the supporting sleeve is characterized in that a strip-shaped through groove is formed in the side wall of the supporting sleeve, the fixing shaft is arranged in the strip-shaped through groove, the clamping assembly is arranged in the strip-shaped through groove, the middle position of the clamping assembly is movably sleeved on the fixing shaft, one end of the clamping assembly is meshed with the helical rack, the other end of the clamping assembly extends out of the supporting sleeve, and the spherical head is fixedly arranged at the exposed end of the clamping assembly.

The clamping assembly comprises: the V-shaped rod, the tooth tip and the tension spring;

the V-shaped rod is arranged in the strip-shaped through groove, the bending position of the V-shaped rod is movably sleeved on the fixed shaft, the tooth point is arranged at one end of the V-shaped rod and meshed with the helical rack, the other end of the V-shaped rod is connected with the spherical head, the tension spring is arranged in the supporting sleeve, one end of the tension spring is connected with the inside of the supporting sleeve, and the other end of the tension spring is connected with the V-shaped rod.

The auxiliary connection structure includes: a fixing seat and a clamping ring;

the fixing seat is arranged on the sliding rod, the clamping ring is arranged on the fixing seat, the clamping ring is of an elastic annular structure, an opening is formed in the upper end of the clamping ring, and the size of the clamping ring is matched with that of the cross section of the cross beam.

The flexible buffer mechanism comprises: the rubber cushion comprises an arc-shaped buckle plate, a latex cushion layer and a pair of connecting components with the same structure;

the arc buckle install in on the crossbeam, the latex bed course install in on the arc buckle, it is a pair of coupling assembling install in the crossbeam lower part, and run through in the crossbeam, with the arc buckle is connected.

The connecting assembly includes: a threaded sleeve and a fastening bolt;

the cross beam is provided with a circular through hole, a thread groove hole is formed in the corresponding position of the lower end face of the arc-shaped buckle plate, the thread sleeve is fixedly embedded in the circular through hole, and the fastening bolt penetrates through the thread sleeve in a spiral mode and is connected with the thread groove hole in the arc-shaped buckle plate.

The hurdle frame structure for the track and field with the protection effect, which is manufactured by the technical scheme of the invention, can fold and store the supporting legs and the supporting sleeves by designing the folding type supporting mechanism, meanwhile, the adjustable lifting mechanism is arranged in the supporting sleeves, can adjust the heights of the cross beams, and is matched with the flexible buffer protection mechanism on the cross beams, so that the damage to the legs when the legs impact the cross beams during the use of a user is avoided to the maximum extent, the hurdle frame structure is simple and stable, the use is quick and convenient, the problems that in the prior art, the integral structure of the hurdle for the track and field sports training is single, the connection of the hurdle connecting upright posts is not firm during the height adjustment, the hurdle cross beams slowly fall down under the action of the cross beams and the gravity, the hurdle for the track and field sports training is inaccurate in height adjustment, and the training effect of athletes can not be achieved, meanwhile, in the process of teaching, the phenomenon that legs collide with the railing panel frequently occurs due to inexperience of a practicer, and the railing panel is high in strength and hardness, so that the practicer is injured or hurdles are damaged easily, and the problem of psychological fear can be caused to the practicer.

Drawings

Fig. 1 is a schematic front view of a hurdle frame structure for track and field with a protection effect according to the present invention.

Fig. 2 is a schematic side view of the hurdle frame structure for track and field with a protection effect according to the present invention.

Fig. 3 is a schematic structural view of a folded hurdle frame structure for track and field with a protection effect according to the present invention.

Fig. 4 is a partially enlarged structural schematic view of the adjustable lifting mechanism of the hurdle frame structure for track and field with a protection effect.

Fig. 5 is a schematic side view of the position of the cross beam of the track and field hurdle structure with a protective effect.

Fig. 6 is a schematic cross-sectional view of the hurdle frame structure for track and field with a protective effect at a position a-a according to the present invention.

Fig. 7 is an enlarged schematic structural view of a position a of the hurdle frame structure for track and field with a protection effect according to the present invention.

Fig. 8 is an enlarged schematic structural view of a position b of the hurdle frame structure for track and field with a protection effect.

Fig. 9 is an enlarged schematic structural view of the position c of the hurdle frame structure for track and field with a protection effect according to the present invention.

Fig. 10 is a schematic structural view of a slide bar lifting state of the track and field hurdle structure with a protection effect.

In the figure: 1-supporting legs; 2-supporting the casing; 3-a cross beam; 4-a slide bar; 5-self-locking connecting hinge; 6-a rotation pin; 7-connecting the sheet; 8-fixing the column; 9-compression spring; 10-supporting feet; 11-a telescopic rod; 12-a chute; 13-a slide rail; 14-a connecting plate; 15-helical rack; 16-a fixed shaft; 17-a ball head; 18-V shaped rods; 19-tooth tip; 20-a tension spring; 21-a fixed seat; 22-snap ring; 23-an arc buckle plate; 24-a latex cushion layer; 25-a thread bush; 26-fastening bolts.

Detailed Description

The invention is described in detail with reference to the accompanying drawings, as shown in fig. 1 to 10, a hurdle frame structure for track and field with a protection effect comprises a pair of supporting legs 1 with the same structure, a pair of supporting sleeves 2 with the same structure and a cross beam 3, wherein the pair of supporting sleeves 2 are respectively installed on one ends of the pair of supporting legs 1 and are rotatably connected with the supporting legs 1, the cross beam 3 is installed between the pair of supporting sleeves 2, a folding and accommodating mechanism is respectively arranged between the pair of supporting legs 1 and the pair of supporting sleeves 2, an adjustable lifting mechanism is arranged in the supporting sleeves 2, a flexible buffer mechanism is arranged on the cross beam 3, and the folding and accommodating mechanism comprises: folding connection structure and bradyseism bearing structure, folding connection structure install in on the 1 lateral wall of supporting leg, bradyseism bearing structure install in on the 1 lower extreme of supporting leg, elevating system includes with adjustable: slide bar 4, supplementary connection structure, slip promotion structure and joint control structure, slide bar 4 activity cartridge in support sleeve 2 is interior, supplementary connection structure install in slide bar 4 is last, slip promotion structure install in support sleeve 2 in, and with the slide bar 4 lateral wall is connected, joint control structure install in on the 2 lateral walls of support sleeve, and one end with it laminates mutually to slip promotion structure, the other end stretches out outside support sleeve 2, folding connection structure includes: auto-lock connecting hinge 5, rotating pin 6, connection piece 7 and fixed

column

8, 5 one end of auto-lock connecting hinge with 1 fixed connection of supporting leg, the other end with 2 lateral wall fixed connection of supporting sleeve, 6 one end activity cartridge of rotating pin in on 2 lateral walls of supporting sleeve, 7 one end fixed suit of connection piece in on the rotating pin 6, just the arc breach has been seted up on the other end of connection piece 7, fixed column 8 install in on 1 lateral wall of supporting leg, and with 6 positions of rotating pin correspond each other and with the arc breach phase-match on the connection piece 7, bradyseism bearing structure includes: compression spring 9, supporting legs 10 and telescopic link 11, compression spring 9 install on the terminal surface under the supporting leg 1, supporting legs 10 install on compression spring 9 is last, telescopic link 11 install in compression spring 9, and upper and lower both ends respectively with supporting leg 1 and supporting legs 10 are connected, the slip promotes the structure and includes: a pair of spacing subassembly of the same slip of structure and a pair of skewed tooth coupling assembling of the same structure, it is a pair of the spacing subassembly of slip all install in support sleeve 2, and be located respectively slide bar 4 both sides, and with slide bar 4 lateral wall is connected, it is a pair of skewed tooth coupling assembling all install in on the slide bar 4 lateral wall, and be located respectively slide bar 4 both sides, and with joint control structure laminates mutually, the spacing subassembly of slip includes spout 12 and slide rail 13, spout 12 install in on the slide bar 4 lateral wall, slide rail 13 install in on the support sleeve 2 lateral wall, and suit in spout 12, skewed tooth coupling assembling includes: connecting plate 14 and skewed tooth rack 15, connecting plate 14 install on the slide bar 4 lateral wall, skewed tooth rack 15 install on connecting plate 14, and with the joint control assembly is connected, the joint control structure includes: fixed axle 16, joint subassembly and ball-type head 17, the bar has been seted up on the support sleeve 2 lateral wall and has been led to the groove, fixed axle 16 install in the bar leads to the inslot, the joint subassembly install in the bar leads to the inslot, and intermediate position activity suit in on the fixed axle 16, joint subassembly one end with skewed tooth rack 15 meshes mutually, and the other end stretches out outside support sleeve 2, ball-type head 17 is fixed install in the joint subassembly expose on holding, the joint subassembly includes: v type pole 18, prong 19 and extension spring 20, V type pole 18 install in the strip is led to the inslot, and the position activity suit of bending is in on the fixed axle 16, prong 19 install in on one end of V type pole 18, and with skewed tooth rack 15 meshes mutually, the other end of V type pole 18 with ball-type head 17 is connected, extension spring 20 install in the support sleeve 2, and one end with support sleeve 2 is inside to be connected, the other end with V type pole 18 is connected, supplementary connection structure includes: fixing base 21 and joint ring 22, fixing base 21 install on the slide bar 4, joint ring 22 install on fixing base 21, joint ring 22 is elasticity annular structure, and the upper end has seted up the opening, joint ring 22 size with the cross section size phase-match of crossbeam 3, flexible buffer gear includes: arc buckle 23, latex bed course 24 and a pair of coupling assembling that the structure is the same, arc buckle 23 install in on the crossbeam 3, latex bed course 24 install in on the arc buckle 23, it is a pair of coupling assembling install in 3 lower parts of crossbeam, and run through in crossbeam 3 and with arc buckle 23 is connected, coupling assembling includes: the cross beam 3 is provided with a circular through hole, a thread groove hole is formed in the corresponding position of the lower end face of the arc-shaped buckle plate 23, the thread sleeve 25 is fixedly embedded in the circular through hole, and the fastening bolt 26 penetrates through the thread sleeve 25 in a spiral mode and is connected with the thread groove hole in the arc-shaped buckle plate 23.

The characteristics of this embodiment do, including a pair of supporting leg 1 that the structure is the same, a pair of support sleeve 2 that the structure is the same and crossbeam 3, a pair of support sleeve 2 is installed respectively and is served on a pair of supporting leg 1, and all rotate with supporting leg 1 and be connected, crossbeam 3 installs between a pair of support sleeve 2, all be provided with folding receiving mechanism between a pair of supporting leg 1 and a pair of support sleeve 2, be provided with adjustable elevating system in the support sleeve 2, be provided with flexible buffer gear on the crossbeam 3, folding receiving mechanism includes: folding connection structure and bradyseism bearing structure, folding connection structure installs on 1 lateral walls of supporting leg, and bradyseism bearing structure installs on 1 lower extremes of supporting leg, and elevating system includes with adjustable: the device comprises a sliding rod 4, an auxiliary connecting structure, a sliding lifting structure and a clamping control structure, wherein the sliding rod 4 is movably inserted into a support sleeve 2, the auxiliary connecting structure is arranged at the upper end of the sliding rod 4, the sliding lifting structure is arranged in the support sleeve 2 and is connected with the side wall of the sliding rod 4, the clamping control structure is arranged on the side wall of the support sleeve 2, one end of the clamping control structure is attached to the sliding lifting structure, and the other end of the clamping control structure extends out of the support sleeve 2; by designing the folding type supporting mechanism, the supporting legs 1 and the supporting sleeves 2 can be folded and stored, meanwhile, the adjustable lifting mechanism is arranged in the supporting sleeves 2, the cross beams 3 can be adjusted in various heights, and the flexible buffer protection mechanism on the cross beams 3 is matched, so that the injury to the legs when the legs impact the cross beams 3 is avoided to the greatest extent when a user uses the folding type supporting mechanism, the folding type supporting mechanism is simple and stable in structure and is quick and convenient to use, the problems that in the prior art, the overall structure of the hurdle for track and field sports training is single, the connection of the hurdle connecting columns is not firm when the heights are adjusted, the hurdle cross beams 3 slowly fall downwards under the action of the hurdle cross beams 3 and the gravity, the hurdle adjusting height for track and field sports training is not accurate, athletes cannot achieve the training effect, and meanwhile, in the teaching, the phenomenon that the legs impact the railing plates frequently occurs due to unskilled, because the intensity of railing board or is big, the hardness is high, not only causes the injury of practitioner or the damage of hurdle of striding easily, also can cause the problem of psychological fear for the practitioner.

The following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in this application.

Example (b): as can be seen from the attached figures 1-10 of the specification, the scheme comprises a pair of supporting legs 1 with the same structure, a pair of supporting sleeves 2 with the same structure and a cross beam 3, wherein the position relation and the connection relation are as follows, the pair of supporting sleeves 2 are respectively arranged on one ends of the pair of supporting legs 1 and are rotatably connected with the supporting legs 1, the cross beam 3 is arranged between the pair of supporting sleeves 2, a folding and accommodating mechanism is arranged between the pair of supporting legs 1 and the pair of supporting sleeves 2, an adjustable lifting mechanism is arranged in each supporting sleeve 2, and a flexible buffer mechanism is arranged on the cross beam 3; the folding storage mechanism includes: the earthquake-damping support structure comprises a folding connecting structure and a earthquake-damping support structure, wherein the folding connecting structure is arranged on the side wall of a support leg 1, and the earthquake-damping support structure is arranged at the lower end of the support leg 1; above-mentioned elevating system with adjustable includes: a slide bar 4, an auxiliary connecting structure, a sliding lifting structure and a clamping control structure, wherein the position relation and the connection relation are as follows, the slide bar 4 is movably inserted in the support sleeve 2, the auxiliary connecting structure is arranged on the upper end of the slide bar 4, the sliding lifting structure is arranged in the support sleeve 2 and is connected with the side wall of the slide bar 4, the clamping control structure is arranged on the side wall of the support sleeve 2, one end of the clamping control structure is attached to the sliding lifting structure, the other end of the clamping control structure extends out of the support sleeve 2, when in use, the folding support mechanism is designed to enable the support leg 1 and the support sleeve 2 to be folded and stored, an adjustable lifting mechanism is arranged in the support sleeve 2 to adjust the height of the cross beam 3, and the flexible buffer protection mechanism on the cross beam 3 is matched, so as to avoid the legs from impacting the cross beam 3 during the use to, the leg injury is caused, the structure is simple and stable, and the use is rapid and convenient;

as shown in fig. 1-3 and fig. 9 of the specification, in the implementation process, the folding connection structure includes: auto-lock hinge 5, the rotating pin 6, connection piece 7 and fixed column 8, its position relation and relation of connection are as follows, 5 one end of auto-lock hinge and 1 fixed connection of supporting leg, the other end and 2 lateral wall fixed connections of supporting sleeve, 6 one end activity cartridge of rotating pin is on 2 lateral walls of supporting sleeve, 7 one end fixed nestlings of connection piece are on rotating pin 6, and seted up the arc breach on the other end of connection piece 7, fixed column 8 installs on 1 lateral wall of supporting leg, and correspond each other with 6 positions of rotating pin, and with the arc breach phase-match on the connection piece 7, wherein the bradyseism bearing structure includes: the device comprises a compression spring 9, a supporting leg 10 and an expansion link 11, wherein the position relation and the connection relation are as follows, the compression spring 9 is arranged on the lower end face of a supporting leg 1, the supporting leg 10 is arranged on the lower end of the compression spring 9, the expansion link 11 is arranged in the compression spring 9, the upper end and the lower end of the expansion link are respectively connected with the supporting leg 1 and the supporting leg 10, when the device is used, the connecting sheet 7 is pulled to enable the connecting sheet 7 to rotate under the limiting connection effect of a rotating pin 6, the arc notch position of the connecting sheet 7 is separated from a fixed column 8, the limiting connection between the supporting leg 1 and a supporting sleeve 2 is released, the supporting leg 1 is pulled to enable a self-locking connecting hinge 5 between the supporting leg 1 and the supporting sleeve 2 to rotate 90 degrees, the supporting leg 10 below the supporting leg 1 is placed on the ground, the height of a sliding rod;

as can be seen from fig. 1 to 10 of the specification, in the implementation process, the sliding lifting structure includes: the sliding limiting assembly comprises a sliding chute 12 and a sliding rail 13, the position relation and the connection relation of the sliding limiting assembly are as follows, the sliding chute 12 is arranged on the side wall of the sliding rod 4, and the sliding rail 13 is arranged on the side wall of the supporting sleeve 2 and sleeved in the sliding chute 12; above-mentioned skewed tooth coupling assembling includes: the position relation and the connection relation of the connecting plate 14 and the helical rack 15 are as follows, the connecting plate 14 is arranged on the side wall of the sliding rod 4, the helical rack 15 is arranged on the connecting plate 14 and is connected with the clamping control component, as shown in the attached figure 4 of the specification, the clamping control structure comprises: fixed axle 16, joint subassembly and ball-type head 17, its positional relationship and relation of connection are as follows, have seted up the bar on the support sleeve 2 lateral wall and have led to the groove, fixed axle 16 installs in the bar logical inslot, the joint subassembly is installed in the bar logical inslot, and intermediate position activity suit is on fixed axle 16, joint subassembly one end meshes with skewed tooth rack 15 mutually, and the other end stretches out outside support sleeve 2, ball-type head 17 is fixed to be installed on the exposure of joint subassembly holds, above-mentioned joint subassembly includes: the V-shaped rod 18, the tooth point 19 and the tension spring 20 are arranged in the strip-shaped through groove, the bending position is movably sleeved on the fixed shaft 16, the tooth point 19 is arranged on one end of the V-shaped rod 18 and is meshed with the helical rack 15, the other end of the V-shaped rod 18 is connected with the spherical head 17, the tension spring 20 is arranged in the support sleeve 2, one end of the tension spring is connected with the inside of the support sleeve 2, and the other end of the tension spring is connected with the V-shaped rod 18, when in use, the slide rod 4 is pulled upwards, the sliding groove 12 on the side wall of the slide rod 4 slides upwards under the limiting action of the sliding rail 13 on the inner wall of the support sleeve 2, meanwhile, the helical rack 15 on the connecting plate 14 on the side wall of the slide rod 4 can be locked under the supporting and pushing action of the tooth point 19 on one end of the V-shaped rod 18, when the slide rod 4 needs to be pushed downwards to adjust the slide rod 4 downwards, the spherical head 17 at one end of the V-shaped rod 18 can be pulled upwards, so that the V-shaped rod 18 rotates under the limiting action of the fixed shaft 16, the tooth tip 19 at one end of the V-shaped rod 18 releases the limitation on the helical teeth on the helical tooth rack 15, the slide rod 4 can be pushed downwards, the adjustment and control on the height of the slide rod 4 are realized, the horizontal height control of the cross beam 3 is further realized, the spherical head 17 is loosened, the V-shaped rod 18 rotates reversely under the resetting action of the tension spring 20, and the tooth tip 19 is enabled to clamp and lock the helical teeth on the helical tooth rack 15 again;

as can be seen from fig. 1 to 5 and fig. 7 of the specification, in the implementation process, the auxiliary connection structure includes: the fixing seat 21 is arranged on the sliding rod 4, the clamping ring 22 is arranged on the fixing seat 21, the clamping ring 22 is of an elastic annular structure, an opening is formed in the upper end of the clamping ring 22, the size of the clamping ring 22 is matched with that of the cross section of the cross beam 3, and when the clamping device is used, two pairs of the cross beam 3 can be pressed into the clamping ring 22, so that the upper ends of the cross beam 3 and the sliding rod 4 can be quickly connected and detached;

as can be seen from fig. 1 to 5 and fig. 7 to 8 of the specification, the flexible buffer mechanism includes: arc buckle 23, latex bed course 24 and a pair of coupling assembling that the structure is the same, its positional relationship and relation of connection are as follows, and arc buckle 23 is installed on crossbeam 3, and latex bed course 24 is installed on arc buckle 23, and a pair of coupling assembling is installed in crossbeam 3 lower part, and run through in crossbeam 3 and be connected with arc buckle 23, and wherein coupling assembling includes: thread bush 25 and fastening bolt 26, its position relation and relation of connection are as follows, circular through-hole has been seted up on the crossbeam 3, threaded slotted hole has been seted up on the terminal surface relevant position under the arc buckle 23, thread bush 25 is fixed to be inlayed and is adorned in circular through-hole, fastening bolt 26 spiral runs through in thread bush 25, and be connected with the threaded slotted hole on the arc buckle 23, when using, arc buckle 23 and latex bed course 24 on it can protect the user, when avoiding clashing, protect the exerciser shank, arc buckle 23 carries out fixed connection through fastening bolt 26 on the crossbeam 3 and the cooperation of thread bush 25, be convenient for change.

The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.

Claims

1. A hurdle frame structure with a protection effect for track and field comprises a pair of supporting legs (1) with the same structure, a pair of supporting sleeves (2) with the same structure and a cross beam (3), and is characterized in that the pair of supporting sleeves (2) are respectively arranged at one ends of the pair of supporting legs (1) and are rotatably connected with the supporting legs (1), the cross beam (3) is arranged between the pair of supporting sleeves (2), a folding and accommodating mechanism is arranged between the pair of supporting legs (1) and the pair of supporting sleeves (2), an adjustable lifting mechanism is arranged in the supporting sleeves (2), and a flexible buffer mechanism is arranged on the cross beam (3);

the folding connection structure is arranged on the side wall of the supporting leg (1), and the cushioning support structure is arranged on the lower end of the supporting leg (1);

the adjustable lifting mechanism comprises: the device comprises a sliding rod (4), an auxiliary connecting structure, a sliding lifting structure and a clamping control structure;

the sliding rod (4) is movably inserted into the supporting sleeve (2), the auxiliary connecting structure is arranged at the upper end of the sliding rod (4), the sliding lifting structure is arranged in the supporting sleeve (2) and is connected with the side wall of the sliding rod (4), the clamping control structure is arranged on the side wall of the supporting sleeve (2), one end of the clamping control structure is attached to the sliding lifting structure, and the other end of the clamping control structure extends out of the supporting sleeve (2);

the folding connection structure includes: the self-locking connecting hinge (5), the rotating pin (6), the connecting sheet (7) and the fixing column (8);

one end of the self-locking connecting hinge (5) is fixedly connected with the supporting leg (1), the other end of the self-locking connecting hinge is fixedly connected with the side wall of the supporting sleeve (2), one end of the rotating pin (6) is movably inserted on the side wall of the supporting sleeve (2), one end of the connecting sheet (7) is fixedly sleeved on the rotating pin (6), an arc-shaped notch is formed in the other end of the connecting sheet (7), and the fixing column (8) is arranged on the side wall of the supporting leg (1), corresponds to the rotating pin (6) in position and is matched with the arc-shaped notch in the connecting sheet (7);

the cushioning support structure includes: a compression spring (9), a supporting leg (10) and a telescopic rod (11);

the compression spring (9) is arranged on the lower end face of the supporting leg (1), the supporting leg (10) is arranged on the lower end of the compression spring (9), the telescopic rod (11) is arranged in the compression spring (9), and the upper end and the lower end of the telescopic rod are respectively connected with the supporting leg (1) and the supporting leg (10);

the pair of sliding limiting assemblies are arranged in the supporting sleeve (2), are respectively positioned on two sides of the sliding rod (4) and are connected with the side wall of the sliding rod (4), and the pair of skewed tooth connecting assemblies are respectively arranged on the side wall of the sliding rod (4), are respectively positioned on two sides of the sliding rod (4) and are attached to the clamping control structure;

the sliding limiting assembly comprises a sliding groove (12) and a sliding rail (13);

the sliding groove (12) is arranged on the side wall of the sliding rod (4), and the sliding rail (13) is arranged on the side wall of the supporting sleeve (2) and sleeved in the sliding groove (12);

the skewed tooth coupling assembling includes: a connecting plate (14) and a helical rack (15);

the connecting plate (14) is arranged on the side wall of the sliding rod (4), and the helical rack (15) is arranged on the connecting plate (14) and connected with the clamping control assembly;

the clamping control structure comprises: the fixing shaft (16), the clamping component and the spherical head (17);

a strip-shaped through groove is formed in the side wall of the support sleeve (2), the fixed shaft (16) is arranged in the strip-shaped through groove, the clamping assembly is arranged in the strip-shaped through groove, the middle position of the clamping assembly is movably sleeved on the fixed shaft (16), one end of the clamping assembly is meshed with the helical rack (15), the other end of the clamping assembly extends out of the support sleeve (2), and the spherical head (17) is fixedly arranged at the exposed end of the clamping assembly;

the clamping assembly comprises: a V-shaped rod (18), a tooth tip (19) and a tension spring (20);

the V-shaped rod (18) is arranged in the strip-shaped through groove, the bending position of the V-shaped rod is movably sleeved on the fixed shaft (16), the tooth point (19) is arranged at one end of the V-shaped rod (18) and meshed with the helical rack (15), the other end of the V-shaped rod (18) is connected with the spherical head (17), the tension spring (20) is arranged in the support sleeve (2), one end of the tension spring is connected with the inside of the support sleeve (2), and the other end of the tension spring is connected with the V-shaped rod (18);

the auxiliary connection structure includes: a fixed seat (21) and a clamping ring (22);

the fixed seat (21) is arranged on the sliding rod (4), the clamping ring (22) is arranged on the fixed seat (21), the clamping ring (22) is of an elastic annular structure, an opening is formed in the upper end of the clamping ring (22), and the size of the clamping ring (22) is matched with the size of the cross section of the cross beam (3);

the flexible buffer mechanism comprises: the rubber cushion comprises an arc-shaped buckle plate (23), a rubber cushion layer (24) and a pair of connecting components with the same structure;

the arc-shaped buckle plate (23) is arranged on the cross beam (3), the latex cushion layer (24) is arranged on the arc-shaped buckle plate (23), and the pair of connecting assemblies are arranged at the lower part of the cross beam (3), penetrate through the cross beam (3) and are connected with the arc-shaped buckle plate (23);

the connecting assembly includes: a threaded sleeve (25) and a fastening bolt (26);

the cross beam (3) is provided with a circular through hole, a thread groove hole is formed in the corresponding position of the lower end face of the arc-shaped buckle plate (23), the thread sleeve (25) is fixedly embedded in the circular through hole, and the fastening bolt (26) penetrates through the thread sleeve (25) in a spiral mode and is connected with the thread groove hole in the arc-shaped buckle plate (23).