CN117160010A - Tennis training net rack capable of being rapidly unfolded and assembled and assembling method - Google Patents

Abstract

The invention relates to the technical field of metal brackets, in particular to a tennis training net rack capable of being rapidly unfolded and assembled and an assembling method, which comprise two groups of counterweight seats, wherein upright rods are fixed on the surfaces of the counterweight seats, extension frames are connected to the surfaces of the upright rods in a sliding manner, storage grooves are formed in the surfaces of the extension frames, a winding shaft is rotatably connected to the inside of the storage grooves, a net belt is wound on the surface of the winding shaft, and handles are connected to the top surfaces of the extension frames; the beneficial effects are as follows: according to the tennis training net rack capable of being quickly unfolded and assembled and the assembling method, the net belt is hidden and stored in the extension frame, the net belt with the required length of Zhang Lachu can be used freely according to the field width, after the two groups of extension frames are assembled together, the net belt is stored in the extension frame, the net belt is prevented from being scratched by external objects, and after the net rack is inverted, the pulley is in contact with the ground, so that the net rack is conveniently pushed to be transferred, namely, labor is saved when the net rack is turned.

Description

Tennis training net rack capable of being rapidly unfolded and assembled and assembling method

Technical Field

The invention relates to the field of metal brackets, in particular to a tennis training net rack capable of being rapidly unfolded and assembled and an assembling method.

Background

Tennis is one of ball sports, the effective tennis sport field is a rectangle, the length is 23.77 meters, the single playing field width is 8.23 meters, and the double playing field width is 10.97 meters; the middle space is provided with a net, and the two players respectively occupy one of the courts, and the player uses the tennis racket to hit the ball.

In the prior art, when the net rack of tennis is in turnover storage, the net belt is generally wound on two support columns, and when the net rack is used again, the net belt wound on the two support columns is wound; the above operation has the following drawbacks:

1. the mesh belt wound on the support column is exposed to the outside, and in the turnover process, the hidden danger that the mesh belt is scratched and damaged exists;

2. and take in the guipure winding on the support and waste time and energy to when using the support turnover to other places, need carry, comparatively laborious.

Disclosure of Invention

The invention aims to provide a tennis training net rack capable of being quickly unfolded and assembled and an assembling method thereof, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a tennis training rack of quick expansion assembly, includes two sets of counter weight seats, and the fixed surface of counter weight seat has the pole setting, and the surface sliding connection of pole setting has the extension frame, the storage tank has been seted up on the surface of extension frame, and the inside rotation of storage tank is connected with the rolling axle, and the surface rolling of rolling axle has the guipure, and the top surface of extension frame is connected with the handle, is equipped with flexible traction assembly between the top surface of handle and rolling axle for handle and rolling axle synchronous rotation, and the top surface activity grafting of extension frame has the briquetting, and the centre gripping handle is used for brake handle and rolling axle after the briquetting is pressed, and the top surface sliding connection of extension frame has the push pedal, and the push pedal is used for spacing briquetting, and the top surface of extension frame rotates and is connected with the pulley, and the pulley contacts ground after the tennis training rack is invertd for pushing away tennis training rack and slides and shifts.

Preferably, the surface integrated into one piece of counter weight seat has the concatenation face, the concatenation face of two sets of counter weight seats is relative, when two sets of counter weight seats are assembled and are accomodate, the concatenation face contact of two sets of counter weight seat surfaces, the surface of two sets of extension frames all is fixed with two handles, two handles are about counter weight seat symmetric distribution, be fixed with the elasticity pulling piece on the handle of a set of extension frame surface, the elasticity pulling piece is equipped with two, two elasticity pulling pieces are fixed respectively at the roof bottom surface of handle and the bottom plate top surface of handle, the one end of elasticity pulling piece is fixed with the card strip, the card strip is right trapezoid strip, when two sets of counter weight seats are assembled, the card strip card is in one side of another handle, the surface fixation of a handle has rubber clamp splice two, when two counter weight seats are assembled, rubber clamp two clamps produce deformation between two sets of handles.

Preferably, the pole setting is "protruding" font platy structure, pole setting sliding connection in the guide way, and the guide way is "protruding" word shape groove, and the guide way is seted up on the surface of extension frame, and the height of guide way equals the height of extension frame, and the top of pole setting is fixed with the dog.

Preferably, the surface fixing of extension frame has the connecting plate, and the surface fixing of connecting plate has the location picture peg, and the location picture peg is pegged graft between two reinforcing rib boards, and two reinforcing rib boards are all fixed at the top surface of counter weight seat, and one side of reinforcing rib board is fixed on the surface of pole setting, and the surface fixing of location picture peg has the rubber holding strip, and the rubber holding strip centre gripping is between location picture peg and reinforcing rib board, and when the extension frame was lifted to the top of pole setting, the connecting plate was stopped by the dog.

Preferably, the surface of the vertical rod is provided with an embedded groove, the height of the embedded groove is equal to that of the vertical rod, the surface of the embedded groove is fixedly provided with a rubber backing plate, the surfaces of the connecting plate and the positioning plugboard are provided with a screw hole, the inside of the screw hole is screwed with a clamping screw rod, the clamping screw rod clamps the rubber backing plate after being screwed, the top surface of the reinforcing rib plate is provided with a notch, the bottom surface of the notch is fixedly provided with an elastic supporting plate, the elastic supporting plate is in an inverted U-shaped plate structure, the height of the elastic supporting plate is larger than that of the notch, and when the connecting plate falls to the top surface of the reinforcing rib plate, the elastic supporting plate is pressed down by the connecting plate to deform.

Preferably, the storage groove is a U-shaped groove, the top surface of the storage groove is provided with a rotating groove, the rotating groove is a round groove, the top surface of the extension frame is provided with a limiting rotating groove, the limiting rotating groove is a convex round groove, the bottom surface of the limiting rotating groove is provided with a through opening, the through opening is communicated with the rotating groove and the limiting rotating groove, the handle is rotationally connected in the limiting rotating groove, the surface of the handle is provided with a plurality of finger grooves, the bottom surface of the handle is fixed with a rubber backing ring, the top surface of the handle is embedded with a plurality of steel balls, the top surface of the handle is fixed with an anti-deflection ring, and the outer diameter of the anti-deflection ring is smaller than the top opening diameter of the limiting rotating groove.

Preferably, the flexible traction assembly includes carousel, inserted column, square mouth, square column and rubber clamp splice one, and the carousel rotates to be connected in the rotation groove, and the carousel is fixed at the top surface of rolling axle, and the bottom of rolling axle rotates to be connected at the bottom surface of accomodating the groove, and the bottom mounting of inserted column is at the top surface of carousel, and square mouth runs through inserted column, and the top of square column is fixed at the bottom surface of handle, and the bottom of square column is pegged graft in square mouth, and is fixed with rubber clamp splice one between the bottom surface of square column and the top surface of carousel, and round mouth has been seted up on the surface of rubber clamp splice one.

Preferably, the top surface of the extension frame is provided with a through hole, the through hole is communicated with a limit rotating groove, the pressing block is movably inserted in the through hole, the top surface of the pressing block is provided with an inclined surface, the bottom end of the pressing block is provided with a mounting groove, the surface of the mounting groove is fixedly provided with elastic rubber belts, the two ends of each elastic rubber belt are respectively fixed on two side walls of the through hole, which are distributed in parallel, after the upper part of the pressing block is pressed, the pressing block stretches the elastic rubber belts to deform, the pressing block downwards presses the handle, and the square column is pressed by the handle to deform until the rubber gasket ring is clamped on the bottom surface of the limit rotating groove by the handle for braking the handle; the top surface of extension frame is fixed with the spacing, the spacing is "" font strip, the one end activity grafting of push pedal is in the spacing, the reservation groove has been seted up to the other end of push pedal, the spout has all been seted up on two parallel distribution's of reservation groove lateral wall, the inside sliding connection of spout has the draw runner, the surface at the blend stop is fixed to the draw runner, the blend stop is "" font platelike structure, the blend stop stretches into in the reservation groove, be fixed with elastic clamping piece I between blend stop and the reservation groove, elastic clamping piece I is "U" font platelike structure, be fixed with elastic clamping piece II between elastic clamping piece I and the reservation groove, elastic clamping piece II is "U" font platelike structure, jack-up push pedal inserts in the spacing under elastic clamping piece II initial state, and the briquetting is in the below of push pedal, the briquetting centre gripping handle, the top surface of push pedal is fixed with and cuts out the ring, cut out and get the ring and keep off in one side of spacing.

Preferably, the top surface of counter weight seat has been seted up limit groove, and the limit groove is "U" word shape groove, and the limit groove is equipped with two sets of limit grooves and is about extending the frame symmetric distribution, and the fixed surface of limit groove has spacing axle, and spacing axle is "T" font cylinder structure, and the pulley rotates around the body of rod of spacing axle, and the groove has been assembled in the bottom surface of limit groove has been seted up to the inside grafting of assembling the groove has the fixed block, and the fixed block passes through the screw fixation in assembling the groove, and the top surface of fixed block is fixed with the brush board, and the brush board is convex platelike structure, and the brush hair centre gripping of brush board is between brush board and pulley.

A method for assembling a rapid-deployment assembled tennis training net rack, the method comprising the steps of:

according to the width of the field, the two extension frames are separated, after the two extension frames are vertically placed, the net belt is unfolded for playing balls, the push plate is pushed to be inserted into the limiting frame, the pressing block is pressed to clamp the handle, the handle is braked, and therefore the unfolding length of the net belt is limited.

Compared with the prior art, the invention has the beneficial effects that:

according to the tennis training net rack capable of being quickly unfolded and assembled and the assembling method, the net belt is hidden and stored in the extension frame, the net belt with the required length of Zhang Lachu can be used freely according to the field width, after the two groups of extension frames are assembled together, the net belt is stored in the extension frame, the net belt is prevented from being scratched by external objects, and after the net rack is inverted, the pulley is in contact with the ground, so that the net rack is conveniently pushed to be transferred, namely, labor is saved when the net rack is turned.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the semi-sectional structure of the present invention;

FIG. 3 is a schematic view of a push plate structure according to the present invention;

FIG. 4 is a schematic diagram of the structure of the pressing block of the invention;

FIG. 5 is a schematic view of the handle structure of the present invention;

FIG. 6 is a schematic view of the connection structure of the brush plate and the fixed block of the present invention;

FIG. 7 is a schematic view of the connection structure of the connection board and the positioning plugboard of the present invention;

FIG. 8 is a schematic view of the connection structure of the reinforcing rib plate and the elastic supporting plate according to the present invention;

FIG. 9 is a schematic view of the structure of the web of the present invention after being stretched;

fig. 10 is a schematic diagram of the present invention after inversion of the structure.

In the figure: the counterweight base 1, the upright 2, the guide groove 3, the extension frame 4, the stop block 5, the reinforcing rib plate 6, the notch groove 7, the elastic supporting plate 8, the connecting plate 9, the positioning plugboard 10, the rubber clamping strip 11, the clamping screw 12, the embedded groove 13, the rubber backing plate 14, the splicing surface 15, the storage groove 16, the rotating groove 17, the limit rotating groove 18, the through hole 19, the turntable 20, the rolling shaft 21, the net belt 22, the inserting column 23, the square hole 24, the square column 25, the handle 26, the rubber clamping block one 27, the finger groove 28, the rubber backing ring 29, the steel ball 30, the anti-deflection ring 31, the through hole 32, the pressing block 33, the mounting groove 34, the elastic rubber belt 35, the inclined surface 36, the limiting frame 37, the push plate 38, the reserved groove 39, the sliding groove 40, the sliding strip 41, the baffle strip 42, the elastic clamping piece one 43, the elastic clamping piece two 44, the picking ring 45, the handle 46, the elastic traction piece 47, the clamping strip 48, the rubber clamping piece two 49, the side groove 50, the limiting shaft 51, the pulley 52, the brush plate 53, the fixing block 54 and the splicing groove 55.

Detailed Description

In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, are intended to be illustrative only and not limiting of the embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present invention.

Example 1

Referring to fig. 1, 2, 9 and 10, the present invention provides a technical solution: the utility model provides a tennis training net rack of quick expansion assembly, including two sets of counter weight seats 1, the fixed surface of counter weight seat 1 has pole setting 2, the surface sliding connection of pole setting 2 has extension frame 4, take in groove 16 has been seted up on the surface of extension frame 4, take in groove 16's inside rotation is connected with take-up shaft 21, take-up shaft 21's surface rolling has guipure 22, the top surface of extension frame 4 is connected with handle 26, be equipped with flexible traction assembly between handle 26 and the top surface of take-up shaft 21, be used for handle 26 and take-up shaft 21 synchronous rotation, the top surface activity grafting of extension frame 4 has briquetting 33, grip handle 26 behind the briquetting 33 compression, be used for braking handle 26 and take-up shaft 21, the top surface sliding connection of extension frame 4 has push pedal 38, push pedal 38 is used for spacing briquetting 33, take-up frame 4's top surface rotation is connected with pulley 52, pulley 52 contacts the ground after the tennis training net rack is inverts, be used for pushing tennis training net rack to slide and shift; the net belt 22 is hidden and stored in the extension frame 4, the net belt 22 with the required length can be used freely Zhang Lachu according to the field width, after two groups of extension frames 4 are assembled together, the net belt 22 is stored in the extension frame 4, the net frame is prevented from being scratched by external objects, and after the net frame is inverted, the pulley 52 contacts the ground, so that the net frame is convenient to push and transfer, namely labor is saved when the net frame is turned.

Example two

On the basis of the first embodiment, in order to realize connection and fixation when assembling and storing two sets of extension frames 4, the surface integrated into one piece of the counterweight base 1 has the splicing surface 15, the splicing surface 15 of two sets of counterweight bases 1 is opposite, when assembling and storing two sets of counterweight bases 1, the splicing surface 15 on the surface of two sets of counterweight bases 1 contacts, the surface of two sets of extension frames 4 is fixed with two handles 46, two handles 46 are symmetrically distributed about the counterweight base 1, the handles 46 on the surface of one set of extension frames 4 are fixed with elastic traction pieces 47, the elastic traction pieces 47 are provided with two, the two elastic traction pieces 47 are respectively fixed on the top plate bottom surface of the handles 46 and the bottom plate top surface of the handles 46, one end of the elastic traction piece 47 is fixed with a clamping strip 48, the clamping strip 48 is a right trapezoid strip, when assembling two sets of counterweight bases 1, the clamping strip 48 is clamped on one side of the other handles 46, the surface of one handle 46 is fixed with a rubber clamping block two 49, and when assembling two counterweight bases 1, the rubber clamping block two 49 are clamped between the two sets of handles 46 to deform.

The two extension frames 4 are close together, and as the clamping strip 48 is clamped on the left side of the handle 46 on the left side, the handle 46 on the surface of the two extension frames 4 tightly clamps the rubber clamping block II 49, and the resilience force of the rubber clamping block II 49 props the two groups of handles 46 to move to two sides, so that the clamping strip 48 is tightly clamped on one side of the handle 46, and the two groups of extension frames 4 are prevented from being separated; when the two extension frames 4 need to be detached, two fingers press the two groups of clamping bars 48 respectively, press and withdraw the clamping bars 48 from the surface of the handle 46, and separate the two extension frames 4.

Example III

Referring to fig. 7 and 8, on the basis of the second embodiment, in order to realize the braking of the extension frame 4 after lifting adjustment, the upright rod 2 is in a 'convex' plate-shaped structure, the upright rod 2 is slidably connected in the guide groove 3, the guide groove 3 is in a 'convex' groove, the guide groove 3 is formed on the surface of the extension frame 4, the height of the guide groove 3 is equal to that of the extension frame 4, the top of the upright rod 2 is fixedly provided with a stop block 5, the surface of the extension frame 4 is fixedly provided with a connecting plate 9, the surface of the connecting plate 9 is fixedly provided with a positioning plugboard 10, the positioning plugboard 10 is inserted between two reinforcing rib plates 6, the two reinforcing rib plates 6 are all fixed on the top surface of the counterweight base 1, one side of the reinforcing rib plate 6 is fixed on the surface of the upright rod 2, a rubber clamping strip 11 is fixed on the surface of the positioning plugboard 10, the rubber clamping strip 11 is clamped between the positioning plugboard 10 and the reinforcing rib plate 6, when the extension frame 4 is lifted to the top of the upright rod 2, the connecting plate 9 is blocked by the stop block 5, the surface of the upright rod 2 is formed with an embedded groove 13, the height of the upright rod 2 is equal to that the upright rod 2, the surface of the embedded groove 13 is fixedly provided with a rubber backing plate 9, the surface of the connecting plate 14, the supporting plate 9 is fixedly provided with a screw plate 9 and a clamping groove 7 is in the shape-shaped structure, the top surface of the screw plate 8 is clamped by the top 7, the top surface 8 is clamped by the elastic clamping plate 8, the top plate 8 is deformed, the top surface 8 is clamped down by the top 7 is clamped to the top 7, the top 7 is clamped down on the top surface of the top 7 is clamped by the top 7, the top 7 is clamped to the bottom 7 is clamped down on the top bottom 7 is in the top 8.

When the extension frame 4 is not braked and falls down, the connecting plate 9 is lapped on the elastic supporting plate 8, and after the positioning inserting plate 10 stretches into the two reinforcing rib plates 6, the rubber clamping strips 11 are clamped between the positioning inserting plate 10 and the reinforcing rib plates 6, the elastic supporting plate 8 buffers the falling down of the connecting plate 9, and the rubber clamping strips 11 slow down the rebound jacking connecting plate 9 of the elastic supporting plate 8 to move upwards, so that the reinforcing rib plates 6 cannot be directly knocked when the connecting plate 9 falls down.

Example IV

On the basis of the third embodiment, in order to prevent the mesh belt 22 stored in the storage groove 16 from stretching out, the storage groove 16 is a U-shaped groove, the top surface of the storage groove 16 is provided with a rotating groove 17, the rotating groove 17 is a round groove, the top surface of the extension frame 4 is provided with a limiting rotating groove 18, the limiting rotating groove 18 is a convex round groove, the bottom surface of the limiting rotating groove 18 is provided with a through hole 19, the through hole 19 is communicated with the rotating groove 17 and the limiting rotating groove 18, the handle 26 is rotationally connected in the limiting rotating groove 18, the surface of the handle 26 is provided with a plurality of finger grooves 28, the bottom surface of the handle 26 is fixedly provided with a rubber backing ring 29, the top surface of the handle 26 is embedded with a plurality of steel balls 30, the top surface of the handle 26 is fixedly provided with an anti-deflection ring 31, and the outer ring diameter of the anti-deflection ring 31 is smaller than the top opening diameter of the limiting rotating groove 18; the telescopic traction assembly comprises a rotary table 20, an inserting column 23, a square opening 24, a square column 25 and a first rubber clamping block 27, wherein the rotary table 20 is rotationally connected in a rotary groove 17, the rotary table 20 is fixed on the top surface of a rolling shaft 21, the bottom end of the rolling shaft 21 is rotationally connected to the bottom surface of a containing groove 16, the bottom end of the inserting column 23 is fixed on the top surface of the rotary table 20, the square opening 24 penetrates through the inserting column 23, the top end of the square column 25 is fixed on the bottom surface of a handle 26, the bottom end of the square column 25 is inserted in the square opening 24, the first rubber clamping block 27 is fixed between the bottom surface of the square column 25 and the top surface of the rotary table 20, a round opening is formed in the surface of the first rubber clamping block 27, a penetrating opening 32 is formed in the top surface of the extension frame 4, the penetrating opening 32 is communicated with a limiting rotary groove 18, a pressing block 33 is movably inserted in the penetrating opening 32, an inclined surface 36 is formed in the top surface of the pressing block 33, a mounting groove 34 is formed in the bottom end of the pressing block 33, elastic belts 35 are respectively fixed on two parallel side walls of the penetrating opening 32, after the pressing block 33 is stretched, the elastic belts 35 are stretched over the pressing block 33, the elastic belts 35 are stretched down, the two elastic belts 26 are pressed down the handle 26, and the handle 26 are pressed down the handle 26 until the handle 26 is pressed down to be deformed, and pressed by the handle 26, and the handle is pressed by the pressing ring 26 until the handle is pressed by the pressing ring to be used for limiting the handle 26; the top surface of extension frame 4 is fixed with spacing 37, spacing 37 is "" font strip, the one end activity grafting of push pedal 38 is in spacing 37, reserve tank 39 has been seted up to the other end of push pedal 38, two parallel distribution's of reserve tank 39 lateral wall are all seted up on the spout 40, the inside sliding connection of spout 40 has draw runner 41, draw runner 41 fixes the surface at the blend stop 42, the blend stop 42 is "" font platelike structure, the blend stop 42 stretches into reserve tank 39, be fixed with elastic clamping piece one 43 between blend stop 42 and the reserve tank 39, elastic clamping piece one 43 is "U" font platelike structure, be fixed with elastic clamping piece two 44 between elastic clamping piece one 43 and the reserve tank 39, elastic clamping piece two 44 are "U" font platelike structure, jack-up push pedal 38 inserts in spacing 37 under the elastic clamping piece one 43 and the elastic clamping piece two 44 initial conditions, and briquetting 33 is in the below of push pedal 38, briquetting 33 centre gripping handle 26, the top surface of push pedal 38 is fixed with and is scratched ring 45, it keeps off in one side of spacing 37 to get ring 45.

Because the first elastic clamping piece 43 and the second elastic clamping piece 44 are both in the initial state, the first elastic clamping piece 43 and the second elastic clamping piece 44 are elastically supported between the push plate 38 and the stop bar 42, at this time, one end of the push plate 38 is inserted into the limit frame 37, the pressing block 33 is pressed down by the push plate 38 to clamp the handle 26, at this time, the pressing block 33 is stretched down to elastically deform the elastic rubber belt 35, the handle 26 is pressed to drive the square column 25 to press the first rubber clamping block 27 along the square opening 24 to elastically deform until the rubber backing ring 29 is clamped on the bottom surface of the limit rotating groove 18 by the handle 26, so that the handle 26 cannot rotate, and because the telescopic traction assembly between the handle 26 and the winding shaft 21 rotates synchronously with the handle 26, the braking of the winding shaft 21 is realized when the handle 26 is braked.

Example five

Referring to fig. 6, in order to clean the surface of the pulley 52 on the basis of the fourth embodiment, the top surface of the counterweight base 1 is provided with a side groove 50, the side groove 50 is a "U" shaped groove, the side groove 50 is provided with two groups, the two groups of side grooves 50 are symmetrically distributed about the extension frame 4, the surface of the side groove 50 is fixed with a limiting shaft 51, the limiting shaft 51 is in a "T" shaped cylindrical structure, the pulley 52 rotates around the rod body of the limiting shaft 51, the bottom surface of the side groove 50 is provided with an assembling groove 55, the inside of the assembling groove 55 is inserted with a fixing block 54, the fixing block 54 is fixed in the assembling groove 55 by a screw, the top surface of the fixing block 54 is fixed with a brush plate 53, the brush plate 53 is in a circular arc plate structure, and the bristles of the brush plate 53 are clamped between the brush plate 53 and the pulley 52.

When the handle 46 is held by hand to invert the extension frame 4, and the extension frame 4 is placed on the ground, the pulley 52 contacts the ground, namely, the state shown in fig. 10 is shown, the net rack is pushed to slide and transfer, the cleaning of the brush plate 53 is accepted in the rotating process of the pulley 52, the particles on the surface of the pulley 52 are cleaned, the brush plate 53 is fixed in the assembling groove 55 through the fixing block 54 and the screw, and the brush plate 53 can be detached and replaced according to the requirement.

Example six

A method for assembling a rapid-deployment assembled tennis training net rack, the method comprising the steps of:

according to the width of the field, the two extension frames 4 are separated, after the two extension frames 4 are vertically placed, the net belt 22 is unfolded for playing balls, the push plate 38 is pushed to be inserted into the limit frame 37, the pressing block 33 is pressed to clamp the handle 26, the handle 26 is braked, and therefore the unfolded length of the net belt 22 is limited.

In actual use, referring to fig. 1, the net belt 22 is stored in the storage slot 16, and the two extension frames 4 are close together, because the clamping strip 48 is clamped on the left side of the left handle 46, the handles 46 on the surfaces of the two extension frames 4 tightly clamp the second rubber clamping block 49, and the resilience force of the second rubber clamping block 49 props the two groups of handles 46 to move to two sides, so that the clamping strip 48 is tightly clamped on one side of the handles 46, and separation of the two groups of extension frames 4 is avoided; the positioning inserting plate 10 is inserted between the two reinforcing rib plates 6, the clamping screw rods 12 lock and clamp the rubber backing plates 14, so that when the extension frame 4 is braked and the extension frame 4 falls without being braked, the connecting plates 9 are lapped on the elastic supporting plates 8, after the positioning inserting plate 10 stretches into the two reinforcing rib plates 6, the rubber clamping strips 11 are clamped between the positioning inserting plate 10 and the reinforcing rib plates 6, the elastic supporting plates 8 buffer the falling of the connecting plates 9, and the rubber clamping strips 11 slow down the rebound jacking of the elastic supporting plates 8 and the upward movement of the connecting plates 9, so that the connecting plates 9 do not directly collide with the reinforcing rib plates 6 when falling; because the first elastic clamping piece 43 and the second elastic clamping piece 44 are in the initial state, the first elastic clamping piece 43 and the second elastic clamping piece 44 are elastically supported between the push plate 38 and the stop bar 42, at the moment, one end of the push plate 38 is inserted into the limit frame 37, the pressing block 33 is pressed down by the push plate 38 to clamp the handle 26, at the moment, the pressing block 33 is stretched down to elastically deform the elastic rubber belt 35, the handle 26 is pressed to drive the square column 25 to press the first rubber clamping block 27 along the square opening 24 to elastically deform until the rubber backing ring 29 is clamped on the bottom surface of the limit rotating groove 18 by the handle 26, so that the handle 26 cannot rotate, and because the telescopic traction assembly between the handle 26 and the winding shaft 21 synchronously rotates with the handle 26, the braking of the winding shaft 21 is realized when the handle 26 is braked; when the handle 46 is held by hand to invert the extension frame 4 and put the extension frame 4 on the ground, the pulley 52 contacts the ground, that is, the state shown in fig. 10, and the net rack is pushed to slide and shift.

When the counterweight base 1 is transferred to a tennis court to be used, the net rack in the state shown in fig. 10 is inverted to the state shown in fig. 1 by holding the handle 46, then fingers extend into the picking ring 45 to stir the picking ring 45 to drive the push plate 38 to squeeze the elastic clamping piece one 43 and the elastic clamping piece two 44 until the push plate 38 is withdrawn from the upper part of the pressing block 33, the elastic rubber belt 35 rebounds to push the pressing block 33 upwards, the pressing block 33 does not clamp the handle 26 any more, the rubber clamping block one 27 rebounds to push the square column 25 upwards along the square opening 24, the square column 25 pushes the handle 26 upwards until the steel balls 30 contact the surface of the limit rotating groove 18, after the push plates 38 at the tops of the two groups of the extending frames 4 are stirred and adjusted according to the operation, the two fingers respectively press the two groups of clamping bars 48 to press the surfaces of the handle 46, and separate the two extending frames 4 to respectively put the two extending frames 4 on two sides of the field, in the process, the net belt 22 is gradually unfolded, the net belt 22 drives the rolling shaft 21 to rotate when the net belt 22 is unfolded, the net belt 22 is pushed to drive the rolling shaft 21 to rotate until the net belt 22 is stretched to determine the length, the rolling bar 22 is pushed and the rolling shaft is pushed to be pushed down, and the rolling shafts are pushed down, and the net rack is clamped, and the net rack is rolled, and the net is rolled.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a tennis training rack of quick expansion assembly, includes two sets of counter weight seats (1), and the fixed surface of counter weight seat (1) has pole setting (2), and the surface sliding connection of pole setting (2) has extension frame (4), its characterized in that: the utility model discloses a tennis training net rack is characterized in that a storage groove (16) is formed in the surface of an extension frame (4), a winding shaft (21) is connected to the inner rotation of the storage groove (16), a net belt (22) is wound on the surface of the winding shaft (21), a handle (26) is connected to the top surface of the extension frame (4), a telescopic traction assembly is arranged between the handle (26) and the top surface of the winding shaft (21), the handle (26) and the winding shaft (21) synchronously rotate, a pressing block (33) is movably inserted into the top surface of the extension frame (4), the pressing block (33) is clamped by the pressing block (26) after being pressed, the pressing block (33) is used for braking the handle (26) and the winding shaft (21), a push plate (38) is used for limiting the pressing block (33), a pulley (52) is connected to the top surface of the extension frame (4) in a rotating mode, and after the tennis training net rack is inverted, the pulley (52) contacts the ground, and the tennis training net rack is used for pushing and sliding and transferring.

2. A rapid deployment assembled tennis training net frame as defined in claim 1, wherein: the surface integrated into one piece of counter weight seat (1) has splice face (15), splice face (15) of two sets of counter weight seat (1) are relative, when accomodating is assembled to two sets of counter weight seat (1), splice face (15) contact on two sets of counter weight seat (1) surfaces, the surface of two sets of extension frame (4) all is fixed with two handles (46), two handles (46) are about counter weight seat (1) symmetric distribution, be fixed with elasticity traction piece (47) on handle (46) of a set of extension frame (4) surface, elasticity traction piece (47) are equipped with two, the roof bottom surface at handle (46) and the bottom plate top surface of handle (46) are fixed respectively to two elasticity traction piece (47), one end of elasticity traction piece (47) is fixed with draw-in bar (48), draw-in bar (48) are right trapezoid strip, when two sets of counter weight seat (1) are assembled, draw-in bar (48) card is in one side of another handle (46), the surface fixation of one handle (46) has rubber clamp block two (49), during two counter weight seat (1) surface is fixed with elasticity traction piece (47), deformation is produced in two clamp blocks (46) clamp between two sets of handles (46).

3. A rapid deployment assembled tennis training net frame as defined in claim 1, wherein: the vertical rod (2) is of a convex-shaped platy structure, the vertical rod (2) is slidably connected in the guide groove (3), the guide groove (3) is of a convex-shaped groove, the guide groove (3) is formed in the surface of the extension frame (4), the height of the guide groove (3) is equal to that of the extension frame (4), and the stop block (5) is fixed at the top of the vertical rod (2).

4. A rapid deployment assembled tennis training net frame according to claim 3, wherein: the surface mounting of extension frame (4) has connecting plate (9), the surface mounting of connecting plate (9) has locating flashboard (10), locating flashboard (10) peg graft between two reinforcing rib plates (6), the top surface at counter weight seat (1) is all fixed to two reinforcing rib plates (6), and the surface at pole setting (2) is fixed to one side of reinforcing rib plate (6), the surface mounting of locating flashboard (10) has rubber holding strip (11), rubber holding strip (11) centre gripping is between locating flashboard (10) and reinforcing rib plate (6), when the top of pole setting (2) is carried on extension frame (4), connecting plate (9) are blockked by dog (5).

5. A rapid deployment assembled tennis training net frame as defined in claim 4, wherein: the utility model discloses a reinforced rib plate, including pole setting (2), embedded groove (13) has been seted up on the surface of pole setting (2), embedded groove (13) highly equals the height of pole setting (2), embedded groove (13)'s fixed surface has rubber backing plate (14), a screw has been seted up on the surface of connecting plate (9) and location picture peg (10), screw inside spiro union has clamping screw (12), clamping screw (12) back centre gripping rubber backing plate (14) screw, notch groove (7) have been seted up to the top surface of reinforcement rib plate (6), the bottom surface of notch groove (7) is fixed with elastic supporting plate (8), elastic supporting plate (8) are the height of inverted "U" font platy structure, the height of elastic supporting plate (8) is greater than the height of notch groove (7), connecting plate (9) whereabouts to reinforcement rib plate (6) top surface, when, elastic supporting plate (8) are pressed down by connecting plate (9) and are produced deformation.

6. A rapid deployment assembled tennis training net frame as defined in claim 1, wherein: the utility model discloses a handle, including holding groove (16), handle (26) and handle (18), holding groove (16) are U-shaped groove, rotation groove (17) have been seted up to the top surface of holding groove (16), rotation groove (17) are the circular groove, spacing groove (18) have been seted up to the top surface of extension frame (4), spacing groove (18) are "protruding" circular groove, opening (19) have been seted up to the bottom surface of spacing groove (18), opening (19) intercommunication rotation groove (17) and spacing groove (18), a plurality of finger grooves (28) have been seted up on the surface of handle (26), the bottom surface of handle (26) is fixed with rubber backing ring (29), a plurality of steel balls (30) are installed in the top surface embedding of handle (26), the top surface of handle (26) is fixed with anti-deflection ring (31), the outer loop diameter of anti-deflection ring (31) is less than the top opening bore of spacing groove (18).

7. A rapid deployment assembled tennis training net frame as defined in claim 6, wherein: the telescopic traction assembly comprises a rotary table (20), an inserting column (23), a square opening (24), a square column (25) and a first rubber clamping block (27), wherein the rotary table (20) is rotationally connected in a rotary groove (17), the rotary table (20) is fixed on the top surface of a rolling shaft (21), the bottom end of the rolling shaft (21) is rotationally connected with the bottom surface of the containing groove (16), the bottom end of the inserting column (23) is fixed on the top surface of the rotary table (20), the square opening (24) penetrates through the inserting column (23), the top end of the square column (25) is fixed on the bottom surface of a handle (26), the bottom end of the square column (25) is inserted in the square opening (24), the first rubber clamping block (27) is fixed between the bottom surface of the square column (25) and the top surface of the rotary table (20), and the surface of the first rubber clamping block (27) is provided with a round opening.

8. A rapid deployment assembled tennis training net frame according to claim 7, wherein: the top surface of the extension frame (4) is provided with a through hole (32), the through hole (32) is communicated with a limiting rotary groove (18), a pressing block (33) is movably inserted into the through hole (32), the top surface of the pressing block (33) is provided with an inclined surface (36), the bottom end of the pressing block (33) is provided with a mounting groove (34), the surface of the mounting groove (34) is fixedly provided with an elastic rubber belt (35), two ends of the elastic rubber belt (35) are respectively fixed on two side walls which are distributed in parallel and are arranged on the through hole (32), after the upper part of the pressing block (33) is pressed, the pressing block (33) stretches the elastic rubber belt (35) to deform, the pressing block (33) downwards presses a handle (26), a square column (25) downwards presses a rubber clamping block (27) to deform until a rubber cushion ring (29) is clamped on the bottom surface of the limiting rotary groove (18) by the handle (26) to brake the handle (26); the top surface of extension frame (4) is fixed with spacing (37), spacing (37) are "" font strip, the one end activity grafting of push pedal (38) is in spacing (37), reserve groove (39) have been seted up to the other end of push pedal (38), spout (40) have all been seted up on the lateral wall of two parallel distributions of reserve groove (39), the inside sliding connection of spout (40) has draw runner (41), the surface at baffle (42) is fixed in draw runner (41), baffle (42) are "" font platelike structure, baffle (42) stretch into reserve groove (39), be fixed with elasticity clamping piece one (43) between baffle (42) and reserve groove (39), elasticity clamping piece one (43) are "U" font platelike structure, be fixed with elasticity clamping piece two (44) between elasticity clamping piece one (43) and the reserve groove (39), elasticity clamping piece two (44) are "U" platelike structure, top support push pedal (38) insert in baffle (37) under the initial state, and draw runner (33) are in baffle (33), take out one side (45) at baffle (33), handle (33) are fixed with one side of holding in (37).

9. A rapid deployment assembled tennis training net frame as defined in claim 1, wherein: the top surface of counter weight seat (1) has seted up limit groove (50), limit groove (50) are "U" word shape groove, limit groove (50) are equipped with two sets of, two sets of limit groove (50) are about extension frame (4) symmetric distribution, the fixed surface of limit groove (50) has spacing axle (51), spacing axle (51) are "T" font cylinder structure, pulley (52) rotate around the body of rod of spacing axle (51), assemble groove (55) have been seted up to the bottom surface of limit groove (50), the inside of assembling groove (55) has pegged graft fixed block (54), fixed block (54) are fixed in assembling groove (55) through the screw, and the top surface of fixed block (54) is fixed with brush board (53), brush board (53) are convex platelike structure, the brush hair centre gripping of brush board (53) is between brush board (53) and pulley (52).

10. A method of assembling a rapid-deployment assembled tennis training net frame for a rapid-deployment assembled tennis training net frame as claimed in any one of claims 1 to 9, wherein: the method comprises the following steps:

according to the width of the field, the two extension frames (4) are separated, after the two extension frames (4) are vertically placed, the net belt (22) is unfolded for playing balls, the push plate (38) is inserted into the limit frame (37), the pressing block (33) is pressed to clamp the handle (26), the handle (26) is braked, and therefore the unfolding length of the net belt (22) is limited.