CN109876396B

CN109876396B - Shot throwing and returning device

Info

Publication number: CN109876396B
Application number: CN201910214955.XA
Authority: CN
Inventors: 于晓阳; 徐英翠; 刘娜娜; 马洪涛
Original assignee: Shandong Institute for Product Quality Inspection
Current assignee: Shandong Institute for Product Quality Inspection
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2020-07-03
Anticipated expiration: 2039-03-20
Also published as: CN109876396A

Abstract

The utility model provides a device that loopbacks is thrown to shot, relates to the mechanical equipment field, and including the leading truck, the leading truck includes multiunit telescopic link group, and the arc backup pad is installed to telescopic link group upside, parallel arrangement's first guide arm and second guide arm have been erect in the arc backup pad, are equipped with coupling mechanism between two adjacent leading trucks, coupling mechanism includes the connecting rod group, the coupling group rotates through the pivot to be connected on first guide arm and second guide arm, the connecting rod group is connected on the telescopic link of electronic jar, electronic jar is fixed on the base. The invention utilizes the double guide rods as the shot slide way, has low cost, utilizes the height difference between the two guide frames as the buffer channel, reduces the speed of the shot, utilizes the electric cylinder to push the connecting rod group to realize the secondary movement of the shot, utilizes the non-Newtonian fluid to reduce the speed of the shot and simultaneously solves the influence of an obstacle on the motion of the shot, and ensures that the speed reduction mechanism and the connecting mechanism are perfectly matched to realize the speed reduction of the shot and avoid the shot from hurting people.

Description

Shot throwing and returning device

Technical Field

The invention relates to the technical field of sports equipment, in particular to a shot throwing and returning device.

Background

Shot is one of the throwing items of track and field sports, and has a remarkable effect on strengthening physique, particularly developing the strength of the trunk and upper and lower limbs. The earliest technology adopts the technology of in-situ shot put, and the general method of the forest gradually appears after the evolution of time, such as side-to-side forward and side sliding push. The waste lead shell is used for replacing stone to perform simulated training, and is the direct origin of the modern shot.

At present, after the shot is thrown, the shot needs to be collected manually and carried back, which wastes time and labor, delays time, and has the defects that related technicians adopt a long pipeline to transport the shot, but the risk is very high, the shot speed is very high, and other people are easily injured by pounding.

Disclosure of Invention

Aiming at the problems of time and labor waste and potential safety hazard in the process of recovering the shot, the invention provides the shot throwing and returning device which can avoid the problems.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a device is loopbacked in shot throwing, includes a leading truck, the leading truck includes multiunit telescopic link group, the arc backup pad is installed to telescopic link group upside, and is a plurality of parallel arrangement's first guide arm and second guide arm are erect in the arc backup pad, are equipped with coupling mechanism between two adjacent leading trucks, coupling mechanism includes a link group, the coupling group rotates through the pivot to be connected on first guide arm and second guide arm, the link group is connected on the telescopic link of electronic jar, electronic jar is fixed on the base.

Furthermore, the telescopic rod group comprises an outer pipe and an inner pipe, wherein the outer pipe is fixed on the ground, the inner pipe is sleeved in the outer pipe, the inner pipe can move up and down along the outer pipe and is fixed at one position on the outer pipe through a knob, and an arc-shaped supporting plate is fixedly mounted on the upper side of the inner pipe.

Furthermore, the linkage includes first connecting rod, second connecting rod and well connecting rod, and wherein first connecting rod and second connecting rod parallel arrangement, and first connecting rod rotates through the pivot and connects on first guide arm, and the second connecting rod rotates through the pivot and connects on the second guide arm, and first connecting rod end is connected through well connecting rod with the second connecting rod end, well connecting rod middle part rotates and connects on the telescopic link of electronic jar.

Furthermore, a collecting mechanism is arranged at the position of the guide frame at the tail end and comprises a rear box, buffering cotton is placed in the rear box, a supporting film is arranged on the upper side of the buffering cotton, and a baffle is arranged on the rear box.

Furthermore, a speed reducing mechanism is arranged between every two adjacent guide frames and comprises an outer box, lower supporting legs are arranged on the lower side of the outer box, a plurality of guide holes are formed in the outer box, a lower groove is arranged under the guide holes, non-Newtonian fluid is placed in the lower groove, guide columns are inserted in the guide holes in a sliding mode, and protruding blocks are installed at the upper ends of the guide columns.

Further, the outer container inboard is equipped with the mounting groove, sliding fit has the connecting plate in the mounting groove, the connecting plate is fixed in guide post one side, is equipped with the spring between connecting plate and mounting groove bottom.

The invention has the beneficial effects that:

the invention utilizes the double guide rods as the shot slide way, has low cost, utilizes the height difference between the two guide frames as the buffer channel, reduces the speed of the shot, utilizes the electric cylinder to push the connecting rod group to realize the secondary movement of the shot, utilizes the non-Newtonian fluid to reduce the speed of the shot and simultaneously solves the influence of an obstacle on the motion of the shot, and ensures that the speed reduction mechanism and the connecting mechanism are perfectly matched to realize the speed reduction of the shot and avoid the shot from hurting people.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a sectional view of the speed reducing mechanism;

FIG. 4 is a schematic three-dimensional structure of the guide frame;

fig. 5 is a three-dimensional structure diagram of the linkage.

In the figure: 1 a guide frame, 11 an outer tube, 12 an inner tube, 13 an arc-shaped support plate, 14 a first guide rod, 15 a second guide rod,

2 speed reducing mechanism, 21 outer box, 22 guide hole, 23 guide post, 24 raised block, 25 mounting groove, 26 connecting plate, 27 spring, 28 lower groove, 29 non-Newtonian fluid, 210 lower support leg,

3 connecting mechanisms, 31 rotating shafts, 32 connecting rod groups, 321 first connecting rods, 322 second connecting rods, 323 middle connecting rods, 33 electric cylinders, 34 bases, 4 shot balls,

5 collecting mechanism, 51 rear box, 52 buffer cotton, 53 support film, 54 baffle.

Detailed Description

As shown in fig. 1 to 5, a shot-throwing loopback apparatus comprises a guide frame 1, which comprises a plurality of telescopic rod sets, wherein the telescopic rod sets comprise an outer pipe 11 and an inner pipe 12, wherein the outer pipe is fixed on the ground and can be fixed through expansion bolts. The inner pipe is sleeved in the outer pipe, can move up and down along the outer pipe and is fixed at one position on the outer pipe through a knob. An arc-shaped supporting plate 13 is fixedly installed on the upper side of the inner pipe, and a plurality of first guide rods 14 and second guide rods 15 which are arranged in parallel are erected on the arc-shaped supporting plates.

A connecting mechanism 3 is arranged between two adjacent guide frames. The first connecting mechanism is used for connecting the guide frame to enable the shot to move continuously, and the second pair of shots is subjected to deceleration and buffering treatment to avoid too fast shot movement.

The connecting mechanism comprises a connecting rod group 32 which is rotatably connected to the first guide rod and the second guide rod through a rotating shaft 31. The linkage comprises a first connecting rod 321, a second connecting rod 322 and a middle connecting rod 323, wherein the first connecting rod and the second connecting rod are arranged in parallel, the first connecting rod is rotatably connected to the first guide rod through a rotating shaft, the second connecting rod is rotatably connected to the second guide rod through a rotating shaft, and the tail end of the first connecting rod is connected with the tail end of the second connecting rod through the middle connecting rod 323. The middle part of the middle connecting rod is rotatably connected to an expansion rod of an electric cylinder 33, and the electric cylinder is fixed on a base 34.

When the shot 4 comes, the shot slides to the first connecting rod and the second connecting rod along the first guide rod and the second guide rod, and because of the height difference between the two guide frames, the shot is relatively uphill when coming, the speed of the shot is slower and slower until the shot moves in the reverse direction after reaching a certain height, and then the shot continuously vibrates in an interval until the shot stops. This time is very long, and the electric cylinder is actuated at this time, so that the link assembly rotates along the rotating shaft, and the shot is driven to move from the link assembly to the next guide frame.

A collecting mechanism 5 is arranged at the extreme guide frame.

The collecting mechanism comprises a rear box 51, buffering cotton 52 is placed in the rear box, a supporting film 53 is arranged on the upper side of the buffering cotton, and a baffle 54 is arranged on the rear box. The collecting mechanism is used for placing the shot, and the shot is prevented from directly sliding to the ground.

Scheme optimal design, two adjacent leading truck are equipped with reduction gears 2 between.

The speed reducing mechanism comprises an outer box 21, a lower supporting leg 210 is arranged on the lower side of the outer box, a plurality of guide holes 22 are formed in the outer box, a lower groove 28 is arranged right below the guide holes, and non-Newtonian fluid 29 is placed in the lower groove. A guide post 23 is inserted in the guide hole in a sliding way, and a convex block 24 is arranged at the upper end of the guide post. Thus, when the shot is thrown, it first impacts the bump, which does not drop rapidly due to the non-Newtonian fluid, but rather remains in its original state, causing the shot to decelerate rapidly. When the shot moves back and forth, the convex block gradually moves downwards due to the inherent characteristic of the non-Newtonian fluid, the blocking effect on the shot is smaller and smaller, the moving speed of the shot is smaller and smaller at the moment, and the deceleration effect is achieved.

Further refine, the outer container inboard is equipped with mounting groove 25, sliding fit has connecting plate 26 in the mounting groove, the connecting plate is fixed in guide post one side, is equipped with spring 27 between connecting plate and mounting groove bottom. The guide post can be pulled up from the non-Newtonian fluid by the spring under the condition that the convex block is not subjected to external force.

In addition to the technical features described in the specification, the technology is known to those skilled in the art.

Claims

1. A shot throwing loopback device comprises a guide frame, the guide frame comprises a plurality of groups of telescopic rod groups, arc-shaped supporting plates are arranged on the upper sides of the telescopic rod groups, a plurality of arc-shaped supporting plates are provided with a first guide rod and a second guide rod which are arranged in parallel, the shot throwing loopback device is characterized in that a connecting mechanism is arranged between two adjacent guide frames, the connecting mechanism comprises a connecting rod group, the connecting group is rotationally connected with the first guide rod and the second guide rod through a rotating shaft, the connecting rod group is connected with a telescopic rod of an electric cylinder, the electric cylinder is fixed on a base,

be equipped with reduction gears between two adjacent leading truck, reduction gears includes the outer container, the outer container downside is equipped with lower landing leg, be equipped with a plurality of guiding holes on the outer container, be equipped with down the groove under the guiding hole, place non-Newtonian fluid in the lower groove, it has the guide post to slide the grafting in the guiding hole, the protruding piece is installed to the guide post upper end.

2. The shot-throwing return apparatus as claimed in claim 1, wherein said telescopic rod assembly comprises an outer tube and an inner tube, wherein the outer tube is fixed on the ground, the inner tube is sleeved in the outer tube, the inner tube can move up and down along the outer tube and is fixed at one position on the outer tube by a knob, and an arc-shaped support plate is fixedly installed at the upper side of the inner tube.

3. The shot-throwing loopback apparatus as recited in claim 1, wherein the linkage comprises a first link, a second link and a middle link, wherein the first link is parallel to the second link, the first link is rotatably connected to the first guide rod through a rotating shaft, the second link is rotatably connected to the second guide rod through a rotating shaft, the end of the first link is connected to the end of the second link through the middle link, and the middle link is rotatably connected to the telescopic rod of the electric cylinder.

4. The shot-throwing return apparatus as claimed in claim 1, wherein a collecting mechanism is provided at the endmost guide frame, the collecting mechanism including a rear case in which a cushion cotton is placed, a support film is provided on the upper side of the cushion cotton, and a baffle is provided on the rear case.

5. The shot-throwing loopback apparatus as recited in claim 1 wherein the inner side of the outer case is provided with a mounting groove, a connecting plate is slidably fitted in the mounting groove, the connecting plate is fixed to one side of the guide post, and a spring is provided between the connecting plate and the bottom of the mounting groove.