CN210322100U

CN210322100U - Bearing upper limit adjustable chest expander applying physics

Info

Publication number: CN210322100U
Application number: CN201921669394.4U
Authority: CN
Inventors: 叶子; 叶礼骞
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-04-14
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a chest expander with adjustable bearing upper limit of using physics, which comprises an outer shell, limit installation cavity and interior installation cavity have been seted up to the inside of shell, the avris of limit installation piece is fixed with the limit pointer, the lower extreme of limit installation piece is fixed with limit spring and limit pull rod, one side that interior installation cavity was kept away from to the avris of limit installation cavity is provided with the limit scale mark, the avris of interior installation piece is fixed with interior pointer, the lower extreme of interior installation piece is fixed with inner spring and interior pull rod, the both sides of interior installation cavity are provided with interior scale mark, the threaded rod is installed with the lower extreme of interior pull rod through the shell to the limit pull rod. This chest expander with adjustable bearing upper limit of using physics can adjust chest expander bearing upper limit, has reduced the limitation of chest expander, has improved the practicality of chest expander, guarantees the stability when the chest expander uses simultaneously, and the couple slope causes the phenomenon that measuring result error appears in avoiding the use, ensures the measuring accuracy.

Description

Bearing upper limit adjustable chest expander applying physics

Technical Field

The utility model relates to an use physics technical field, specifically be an applied physics's chest expander with adjustable bearing upper limit.

Background

The application of physics is mainly to culture and master the basic theory and the specialty of the method of physics, and has good mathematical basis and basic experimental skills. The chest expander is a common instrument in physics, and can be used for measuring the tension and the weight of an object.

However, the upper limit of the existing chest expander applied to physics cannot be adjusted, and only objects or tension in the bearing range can be measured, so that the limitation is large, and the practicability is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a chest expander with adjustable bearing upper limit of using physics to provide the chest expander that current application physics was used in solving above-mentioned background art, its bearing upper limit can't be adjusted, can only measure object or pulling force in the bearing range, and the limitation is great, problem that the practicality is low.

In order to achieve the above object, the utility model provides a following technical scheme: a bearing upper limit adjustable chest expander applying physics comprises a shell, wherein a side installation cavity and an inner installation cavity are arranged in the shell, an edge mounting block is arranged in the edge mounting cavity, an edge pointer is fixed on the edge side of the edge mounting block, an edge spring and an edge pull rod are fixed at the lower end of the edge mounting block, edge scale marks are arranged on one side of the edge mounting cavity far away from the inner mounting cavity, an inner mounting block is arranged in the inner mounting cavity, an inner pointer is fixed on the side of the inner mounting block, the lower end of the inner mounting block is fixed with an inner spring and an inner pull rod, inner scale marks are arranged on two sides of the inner mounting cavity, the lower ends of the side pull rod and the inner pull rod penetrate through the shell to be provided with a threaded rod, the side pull rod, the inner pull rod and the threaded rod are connected with each other through locking pieces, the lower extreme of threaded rod is fixed with the connecting plate, the upper end of shell is rotated and is connected with rings.

Preferably, the two edge mounting cavities are symmetrically arranged about a vertical central line of the shell, a certain gap exists between the inner side of each edge mounting cavity and each edge mounting block and each edge spring, an edge pointer at the edge side of each edge mounting block points to one side of an edge scale mark, and an edge pull rod at the lower end of each edge mounting block is located inside each edge spring.

Preferably, the inner mounting cavity is located in the middle of the outer shell, certain gaps exist between the inner side of the inner mounting cavity and the inner mounting block and between the inner side of the inner mounting cavity and the inner spring, and the center of the inner spring and the center of the inner pull rod are located on the same vertical straight line.

Preferably, the lower ends of the side pull rod and the inner pull rod are both designed into a T-shaped structure, and the lower ends of the side pull rod and the inner pull rod are matched with the inner side of the locking piece.

Preferably, the connecting plate includes the planking, the avris symmetry movable mounting of planking has two inner panels, the planking locks each other through the locking bolt with the inner panel, the lower extreme fixedly connected with couple of planking.

Preferably, the vertical center line of the hanging ring is coincident with the vertical center line of the shell.

Compared with the prior art, the beneficial effects of the utility model are that:

1. according to the tension device with the adjustable upper bearing limit, the side scale lines, the side springs, the inner scale lines and the inner springs are matched for use, a proper bearing range can be selected according to needs, the upper bearing limit of the tension device can be adjusted conveniently, the limitation of the tension device is reduced, and the practicability of the tension device is improved;

2. this chest expander with adjustable bearing upper limit of using physics, the dismouting of limit pull rod of being convenient for is ensured in the interpolation of connecting plate and retaining member, and then the stability when guaranteeing the chest expander use, and the couple slope causes the phenomenon that measuring result error appears in avoiding the use, ensures the measuring accuracy.

Drawings

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

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

FIG. 3 is a schematic view of the connecting block structure of the present invention;

fig. 4 is a schematic view of the connection structure of the side pull rod and the threaded rod of the present invention.

In the figure: 1. a housing; 2. a side mounting cavity; 3. an inner mounting cavity; 4. an edge mounting block; 5. a side pointer; 6. an edge spring; 7. a side pull rod; 8. side graduation lines; 9. an inner mounting block; 10. an inner pointer; 11. an inner spring; 12. an inner pull rod; 13. inner scale lines; 14. a connecting plate; 15. a threaded rod; 16. a locking member; 17. a hoisting ring; 141. an outer plate; 142. an inner plate; 143. locking the bolt; 144. and (4) hanging hooks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a bearing upper limit adjustable chest expander applying physics comprises a shell 1, wherein an edge installation cavity 2 and an inner installation cavity 3 are arranged in the shell 1, an edge installation block 4 is arranged in the edge installation cavity 2, an edge pointer 5 is fixed on the edge side of the edge installation block 4, an edge spring 6 and an edge pull rod 7 are fixed at the lower end of the edge installation block 4, an edge scale mark 8 is arranged on one side of the edge installation cavity 2 far away from the inner installation cavity 3, an inner installation block 9 is arranged in the inner installation cavity 3, an inner pointer 10 is fixed on the edge side of the inner installation block 9, an inner spring 11 and an inner pull rod 12 are fixed at the lower end of the inner installation block 9, inner scale marks 13 are arranged on two sides of the inner installation cavity 3, the lower ends of the edge pull rod 7 and the inner pull rod 12 penetrate through the shell 1 to be installed with a threaded rod 15, the edge pull rod 7, the inner pull rod 12 and the threaded rod 15 are mutually connected through a locking piece 16, the upper end of the shell 1 is rotatably connected with a hanging ring 17.

Further, the two side installation cavities 2 are symmetrically arranged about the vertical center line of the shell 1, a certain gap exists between the inner side of each side installation cavity 2 and each side installation block 4 and each side spring 6, the side pointer 5 on the side of each side installation block 4 points to one side of each side scale mark 8, and the side pull rod 7 at the lower end of each side installation block 4 is located inside each side spring 6, so that the movement of each side spring 6 is not blocked, and the stable up-and-down movement of each side pull rod 7 is further ensured.

Further, the inner installation cavity 3 is located in the middle of the outer shell 1, a certain gap exists between the inner side of the inner installation cavity 3 and the inner installation block 9 and between the inner installation cavity 3 and the inner spring 11, and the center of the inner spring 11 and the center of the inner pull rod 12 are located on the same vertical straight line, so that the movement of the inner spring 11 is not blocked, and the stable up-and-down movement of the inner pull rod 12 is further ensured.

Furthermore, the lower ends of the side pull rod 7 and the inner pull rod 12 are both designed into a T-shaped structure, and the lower ends of the side pull rod 7 and the inner pull rod 12 are both matched with the inner side of the locking part 16, so that the side pull rod 7 and the inner pull rod 12 can be stably installed.

Further, the connecting plate 14 includes an outer plate 141, two inner plates 142 are symmetrically and movably mounted on the sides of the outer plate 141, the outer plate 141 and the inner plates 142 are locked to each other by locking bolts 143, and a hook 144 is fixedly connected to the lower end of the outer plate 141 to facilitate the installation of the side pull rod 7.

Further, the vertical center line of the hanging ring 17 is coincident with the vertical center line of the shell 1, so that the chest expander can be lifted smoothly.

The working principle is as follows: first, the load-bearing range is selected according to the object to be measured and the magnitude of the tensile force, and when the inner spring 11 is used for measurement, the inner pull rod 12 and the threaded rod 15 at the upper end of the outer plate 141 are locked with each other through the locking piece 16, an object is hung on the hook 144, the object is lifted through the hanging ring 17, under the gravity of an object, the inner pull rod 12 pulls the inner mounting block 9 to move downwards, the inner spring 11 contracts, the inner pointer 10 moves downwards, when the inner pointer 10 is stable, the corresponding number on the inner scale mark 13 pointed by the inner pointer 10 is recorded, when a larger object or a measurement of the tensile force is required, the locking bolt 143 is unscrewed, the inner plate 142 is pulled out from the inside of the outer plate 141, the outer plate 141 and the inner plate 142 are locked to each other by the locking bolt 143, and then the side pull rod 7 and the threaded rod 15 are locked with each other through a locking piece 16, the measuring steps are repeated, and finally the corresponding number on the side scale mark 8 pointed by the side pointer 5 is recorded.

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

Claims

1. The utility model provides an applied physics's chest expander with adjustable bearing upper limit, includes the shell, its characterized in that: the utility model discloses a threaded rod, including shell, limit installation cavity, limit pull rod, limit spring, limit pull rod, limit scale mark, limit pointer, limit spring, limit pull rod, limit scale mark, limit pull rod, limit pointer, limit spring, limit pull rod, limit spring, limit pull rod, limit pull.

2. The physics-based weight-bearing upper-limit adjustable chest expander as claimed in claim 1, wherein: the limit installation cavity is provided with two about the vertical central line symmetry of shell, and there is certain clearance between the inboard of limit installation cavity and limit installation piece, the limit spring, the limit pointer point to one side of limit scale mark of limit installation piece avris, and the limit pull rod of limit installation piece lower extreme is located the inside of limit spring.

3. The physics-based weight-bearing upper-limit adjustable chest expander as claimed in claim 1, wherein: the inner mounting cavity is located in the middle of the shell, certain gaps exist between the inner side of the inner mounting cavity and the inner mounting block and between the inner side of the inner mounting cavity and the inner spring, and the center of the inner spring and the center of the inner pull rod are located on the same vertical straight line.

4. The physics-based weight-bearing upper-limit adjustable chest expander as claimed in claim 1, wherein: the lower ends of the side pull rod and the inner pull rod are both in T-shaped structural design, and the lower ends of the side pull rod and the inner pull rod are matched with the inner sides of the locking pieces.

5. The physics-based weight-bearing upper-limit adjustable chest expander as claimed in claim 1, wherein: the connecting plate comprises an outer plate, two inner plates are symmetrically and movably mounted on the sides of the outer plate, the outer plate and the inner plates are mutually locked through locking bolts, and a hook is fixedly connected to the lower end of the outer plate.

6. The physics-based weight-bearing upper-limit adjustable chest expander as claimed in claim 1, wherein: the vertical center line of the hanging ring is overlapped with the vertical center line of the shell.