CN219579838U - Adjustable tennis ball rack for practice - Google Patents

Abstract

The utility model discloses an adjustable tennis training ball frame which comprises a base, wherein the outer side of the base is connected with a counterweight mechanism through a bolt, the top of the base is connected with a support column through a bolt, the inner side of the support column is provided with a moving groove, the top of the support column is fixedly connected with a motor, the output end of the motor is fixedly connected with a threaded rod, the bottom of the threaded rod penetrates through the moving groove and is movably connected with the bottom of an inner cavity of the moving groove through a bearing, a moving block is sleeved on the surface thread of the threaded rod, the inner side of the moving block penetrates through the moving groove and is fixedly connected with a connecting plate, the inner side of the connecting plate is welded with a positioning plate, and the top of the positioning plate is provided with a positioning rod in a penetrating manner. According to the utility model, the push rod, the winding drum, the rotating rod, the spring, the fixing rod, the fixing groove and the net are matched for use, so that the net can be adjusted according to the requirements of places and users, and the use efficiency and the practicability of the device are improved.

Description

Adjustable tennis ball rack for practice

Technical Field

The utility model relates to the technical field of tennis racks, in particular to an adjustable tennis rack for tennis training.

Background

Tennis is a ball game, typically performed between two single players or two pairs of players, who hit tennis with a tennis racket across a net on a tennis court, which is initially referred to as "grass tennis", after which tennis has been rapidly developed, which is now a world-wide game called world-wide second-ball game, in which tennis practice adjustments to the ball frame are required.

The utility model patent of patent application publication number CN211561769U discloses an adjustable ball frame for tennis training, including removing the seat, remove the bottom movable mounting of seat and have the truckle, remove the upper portion one side position bolted connection of seat and have the fixing base, the upper portion fixedly connected with stand of fixing base, the inside swing joint of stand has the extension pole, the screw has been seted up to the surface of extension pole, the outside top position threaded connection of stand has the lock bolt, the outside of stand is close to one side position and is equipped with straining device, straining device's one end is equipped with the couple, the outside of couple is connected with the tennis net, the upper portion opposite side position of removing the seat is equipped with tennis storage mechanism. The adjustable tennis frame for tennis training has the function of storing tennis, is higher in functionality, convenient to take tennis and convenient to use, and can increase the tension of the tennis net, so that the tennis frame is more beneficial to use.

However, the device still has some defects in practical use, namely the length of the tennis net cannot be extended and rolled obviously, the length of the tennis net cannot be adjusted according to the requirements of places and trainers in the training process, the training requirements are not met, and the using effect and the practicability of the device are reduced.

Therefore, it is necessary to provide an adjustable tennis training ball frame to solve the above problems.

Disclosure of Invention

The utility model aims to provide an adjustable tennis ball training ball frame which has the advantage of being capable of extending or rolling a tennis net, and solves the problems that the length of the tennis net cannot be adjusted according to the use range of a field and the requirements of a trainer in the training process, and the use effect and the practicability of the device are reduced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a ball frame for tennis exercise with adjustable, includes the base, there is counter weight mechanism in the outside of base through bolted connection, there is the support column at the top of base through bolted connection, the removal groove has been seted up to the inboard of support column, the top fixedly connected with motor of support column, the output fixedly connected with threaded rod of motor, the bottom of threaded rod runs through the removal groove and passes through bearing swing joint with the bottom of removal groove inner chamber, the surface thread bush of threaded rod is equipped with the movable block, the inboard of movable block runs through removal groove and fixedly connected with connecting plate, the inboard welding of connecting plate has the locating plate, the top of locating plate runs through and is provided with the locating lever, one side welding that the locating lever was kept away from the locating plate has the net, the outside of net is run through and is provided with reel mechanism.

Preferably, the reel mechanism comprises a reel, the top of reel inner chamber is through bearing swing joint there being the bull stick, the bottom of bull stick runs through the reel and fixedly connected with knob, net movable sleeve is established on the surface of bull stick, the fixed slot has been seted up at the top of bull stick, the equal fixedly connected with spring in the left and right sides at reel top, the top fixedly connected with push rod of spring, the bottom fixedly connected with dead lever of push rod, the bottom of dead lever runs through the reel and extends to the inner chamber of fixed slot.

Preferably, the counterweight mechanism comprises a counterweight box, the inner side of the counterweight box is connected with the outer side of the base through a bolt, a placing groove is formed in the outer side of the counterweight box, the bottom of the inner side of the inner cavity of the placing groove is movably connected with a roller through a rotating shaft, and the middle of the inner side of the inner cavity of the placing groove is fixedly connected with a clamping groove matched with the roller.

Preferably, the top of reel has seted up the opening that the cooperation dead lever used, the draw groove that cooperation net used has been seted up in the outside of reel, the top and the bottom in the reel outside all fixedly connected with magnetite.

Preferably, the outside of movable block and the outside of movable groove inner chamber are sliding contact, the jack that the cooperation locating lever used has been seted up at the top of locating plate.

Preferably, the controller is welded on the outer side of the support column, and the outer side of the connecting plate is in sliding contact with the inner side of the support column.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the push rod, the winding drum, the rotating rod, the spring, the fixing rod, the fixing groove and the net are matched for use, so that the length of the net can be adjusted according to the use range of a place and the requirements of users, and the use efficiency and the practicability of the device are improved.

The utility model can fold and place the rollers through the matching of the weight box, the placing groove, the clamping groove and the rollers, is convenient for the use in various occasions, increases the application range and improves the practicability of the device.

Drawings

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

FIG. 2 is an enlarged view of FIG. 1A in accordance with the present utility model;

FIG. 3 is a cross-sectional view of the spool mechanism of the present utility model;

FIG. 4 is an enlarged view of B of FIG. 3 in accordance with the present utility model;

fig. 5 is a cross-sectional view of a weight mechanism of the present utility model.

In the figure: 1 motor, 2 support column, 3 threaded rod, 4 movable blocks, 5 connecting plate, 6 base, 7 counter weight mechanisms, 71 counter weight boxes, 72 standing grooves, 73 clamping grooves, 74 idler wheels, 8 reel mechanisms, 81 push rods, 82 reels, 83 rotary rods, 84 springs, 85 fixed rods, 86 fixed grooves, 9 net, 10 locating plates and 11 locating rods.

Description of the embodiments

Referring to fig. 1-5, an adjustable tennis training ball frame comprises a base 6, the outside of base 6 is through bolted connection having a counter weight mechanism 7, the top of base 6 is through bolted connection having a support column 2, the inboard of support column 2 has been seted up and has been moved the groove, the top fixedly connected with motor 1 of support column 2, the output fixedly connected with threaded rod 3 of motor 1, the bottom of threaded rod 3 runs through the removal groove and passes through bearing swing joint with the bottom of removal groove inner chamber, the surface thread bush of threaded rod 3 is equipped with movable block 4, movable block 4's inboard runs through the removal groove and fixedly connected with connecting plate 5, connecting plate 5's inboard welding has locating plate 10, locating plate 10's top is run through and is provided with locating lever 11, one side that locating lever 11 kept away from locating plate 10 welds and has net 9, net 9's outside runs through and is provided with reel mechanism 8.

The reel mechanism 8 includes reel 82, the top of reel 82 inner chamber is through bearing swing joint has bull stick 83, reel 82 and fixedly connected with knob are run through to the bottom of bull stick 83, net 9 movable sleeve is established on the surface of bull stick 83, fixed slot 86 has been seted up at the top of bull stick 83, the equal fixedly connected with spring 84 in left and right sides at reel 82 top, the top fixedly connected with push rod 81 of spring 84, the bottom fixedly connected with dead lever 85 of push rod 81, the bottom of dead lever 85 runs through reel 82 and extends to the inner chamber of fixed slot 86, through setting up dead lever 85 and fixed slot 86, can fix bull stick 83, the extension of net 9 is suspended.

The counter weight mechanism 7 includes the weight box 71, and bolted connection is passed through with the outside of base 6 in the inboard of weight box 71, and standing groove 72 has been seted up in the outside of weight box 71, and the bottom of standing groove 72 inner chamber inboard has gyro wheel 74 through pivot swing joint, and the draw-in groove 73 that the cooperation gyro wheel 74 used is fixedly connected with at the middle part of standing groove 72 inner chamber inboard, through setting up gyro wheel 74, can make the removal process more convenient, improves the practicality of device.

The opening that cooperation dead lever 85 used has been seted up at the top of reel 82, and the draw groove that cooperation net 9 used has been seted up in the outside of reel 82, and the equal fixedly connected with magnetite in top and the bottom in the reel 82 outside can adsorb between the reel 82 fast through setting up the magnetite, has improved the stability of reel 82.

The outside of movable block 4 is sliding contact with the outside of movable groove inner chamber, and the jack that cooperation locating lever 11 used has been seted up at the top of locating plate 10, through setting up movable block 4, can drive inboard connecting plate 5 and net 9 and reciprocate, conveniently adjusts the height of net 9.

The outside welding of support column 2 has the controller, and the outside of connecting plate 5 is sliding contact with the inboard of support column 2, through setting up the controller, is convenient for control motor 1, convenient and fast is difficult for losing.

The threaded rod 3 refers to a cylinder with a spiral groove cut on the outer surface or a cone with a conical surface spiral groove cut on the outer surface, the threaded rod 3 is provided with different heads, the heads are called as an external hexagonal threaded rod 3, the threaded rod 3 is generally scrapped due to long-term abrasion, the clearance between the threaded rod 3 and a charging barrel is too large to be extruded normally, but the working stress generated by improper design or operation exceeds the strength limit, so that the threaded rod 3 also meets certain strength requirements, and the dangerous section of the threaded rod 3 is generally at the position with the minimum diameter of the thread root of the charging section.

When the ball net is used, the roller 74 is taken out of the clamping groove 73, the roller 74 and the weight box 71 are kept to be in the same horizontal line, the supporting column 2 is moved, after the roller 74 reaches a proper position, the roller 74 is placed in the clamping groove 73 again, then the positioning plate 10 is used for fixing the positioning rod 11 on the outer side of the ball net 9, the winding drum 82 is pulled to enable the ball net 9 to rotate on the surface of the rotating rod 83 to drive the ball net 9 to be displayed, when the two winding drums 82 are contacted, the winding drums 82 are fixed through magnets, the motor 1 is controlled to operate through the controller, the motor 1 drives the threaded rod 3 at the bottom to rotate positively, the moving block 4 on the surface of the threaded rod drives the connecting plate 5 on the inner side to move upwards, the ball net 9 on the inner side and the winding drum 82 to move upwards, and after the specified height is reached, the motor 1 is turned off.

To sum up: this ball frame is used in tennis exercise with adjustable uses through push rod 81, reel 82, bull stick 83, spring 84, dead lever 85, fixed slot 86 and net 9 cooperation, has solved in the training process, can not adjust the length of net according to the application range in place and the demand of training person, has reduced the problem of result of use and device practicality.

Claims (6)

1. The utility model provides a tennis is practiced with ball frame with adjustable, includes base (6), its characterized in that: the utility model discloses a ball net, including base (6), locating plate (10) are provided with locating lever (11) in the inboard welding, locating lever (11) are kept away from locating plate (10) one side welding has net (9), net (9) are provided with reel mechanism (8) in the outside of running through moving groove and passing through bearing swing joint with the bottom of moving groove inner chamber in the bottom of threaded rod (3), the surface thread bush of threaded rod (3) is equipped with movable block (4), the inboard of movable block (4) runs through moving groove and fixedly connected with connecting plate (5), locating plate (10) are welded to the inboard of connecting plate (5), locating lever (10) are provided with locating lever (11) in the top running through, locating lever (11) are kept away from locating plate (10).

2. An adjustable tennis training ball frame according to claim 1 wherein: the winding drum mechanism (8) comprises a winding drum (82), the top of an inner cavity of the winding drum (82) is movably connected with a rotating rod (83) through a bearing, the bottom of the rotating rod (83) penetrates through the winding drum (82) and is fixedly connected with a knob, the ball net (9) is movably sleeved on the surface of the rotating rod (83), a fixing groove (86) is formed in the top of the rotating rod (83), springs (84) are fixedly connected to the left side and the right side of the top of the winding drum (82), a push rod (81) is fixedly connected to the top of the springs (84), a fixing rod (85) is fixedly connected to the bottom of the push rod (81), and the bottom of the fixing rod (85) penetrates through the winding drum (82) and extends to the inner cavity of the fixing groove (86).

3. An adjustable tennis training ball frame according to claim 1 wherein: the weight mechanism (7) comprises a weight box (71), the inner side of the weight box (71) is connected with the outer side of the base (6) through bolts, a placing groove (72) is formed in the outer side of the weight box (71), a roller (74) is movably connected to the bottom of the inner side of an inner cavity of the placing groove (72) through a rotating shaft, and a clamping groove (73) matched with the roller (74) is fixedly connected to the middle of the inner side of the inner cavity of the placing groove (72).

4. An adjustable tennis training ball frame according to claim 2 wherein: the top of reel (82) has seted up the opening that cooperation dead lever (85) used, the draw groove that cooperation net (9) used has been seted up in the outside of reel (82), the top and the bottom in the outside of reel (82) all fixedly connected with magnetite.

5. An adjustable tennis training ball frame according to claim 1 wherein: the outside of movable block (4) is sliding contact with the outside of movable groove inner chamber, jack that cooperation locating lever (11) used has been seted up at the top of locating plate (10).

6. An adjustable tennis training ball frame according to claim 1 wherein: the outside welding of support column (2) has the controller, the outside of connecting plate (5) is sliding contact with the inboard of support column (2).