CN211124606U

CN211124606U - Physical auxiliary device for lever moment experiment

Info

Publication number: CN211124606U
Application number: CN201921419813.9U
Authority: CN
Inventors: 简燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-07-28
Anticipated expiration: 2029-08-29

Abstract

The utility model relates to a lever experiment technical field just discloses a physics auxiliary device of lever moment experiment, which comprises a bracket, the top swing joint of support has the main part, the main part passes through jackshaft swing joint on the support, the right side fixedly connected with baffle of jackshaft, the turn trough has been seted up in the middle of the main part, the left side fixedly connected with semicircle piece of turn trough. This physics auxiliary device of lever moment experiment makes the pointer piece can remove the result of the different moment of selection moment test about can moving, later to the push-and-pull of depression bar, make the tight post of clamp outwards or inwards slide, extrude on the rubber slab at both ends about, played the tight effect of clamp to arbitrary moment position in our experiment to reached the experimenter in the experiment because of the condition of different moment tests, the quick tight effect of quick travel moment quick clamp, and the device operates simply swiftly, and does not take time.

Description

Physical auxiliary device for lever moment experiment

Technical Field

The utility model relates to a lever experiment technical field specifically is a physics auxiliary device of lever moment experiment.

Background

The lever is also called a labor-saving lever, a labor-saving lever and an equal-arm lever, the lever principle is also called a lever balance condition, two moments (products of force and moment arm) acting on the lever are required to be equal in size to balance the lever, namely, a power × power arm is a resistance × resistance arm, and an algebraic expression is F1, L1, F2, L2, in the expression, F1 represents power, L1 represents the power arm, F2 represents resistance, and L2 represents the resistance arm.

At present all there is an exploration device to lever moment in the laboratory of various physics now, how to know lever moment's a formula, whether accord with the law in the reality, also can follow the theory formula of guessing the lever in the actual experiment, in fact the laboratory still has a lot of defects to the equipment of lever moment experiment more roughly, in actual operation, the lever is emptyd easily, the hook sign indicating number is difficult to place, and need take off the hook sign indicating number repeatedly and install when testing different moments, this in the experiment, increased not a few vexations for the experimenter, and the test result who goes out has the error.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a physics auxiliary device of lever moment experiment possesses quick adjustment moment, is difficult to the intention and emptys advantages such as, has solved the lever and has emptyd easily, and the hook sign indicating number is difficult to place, and need take the problem of hook sign indicating number and install repeatedly when testing different moments.

(II) technical scheme

For realizing above-mentioned quick adjustment moment, be difficult to meaning purpose such as empting, the utility model provides a following technical scheme: a physical auxiliary device for a lever torque experiment comprises a support, wherein the top of the support is movably connected with a main body, the main body is movably connected onto the support through an intermediate shaft, a baffle is fixedly connected to the right side of the intermediate shaft, a rotary groove is formed in the middle of the main body, a semicircular block is fixedly connected to the left side of the rotary groove, a sliding groove is formed in the front of the main body, a pointer block is slidably connected onto the inner wall of the sliding groove, a press rod is movably connected to the axis of the pointer block, sliding grooves are formed in the upper side and the lower side of the press rod, clamping columns are movably connected to the upper side and the lower side of the sliding groove, sliding columns are fixedly mounted at opposite ends of the two clamping columns, a clamping column groove is formed in the left side of the pointer block, the clamping columns are movably connected onto the inner wall of the clamping column groove, a rubber plate groove is formed in, the movable groove has been seted up to the bottom of main part, the middle fixedly connected with V type frame of pointer piece, the left side fixedly connected with gear pivot of pointer piece, the outside swing joint of gear pivot has the gear, the bottom meshing of gear has the rack, the gear groove has been seted up in the left side of main part, the bottom in gear groove is fixed to the bottom of rack, the scale mark has been seted up on the surface of main part.

Preferably, the position of the clamping column groove is arranged above the rubber plate, so that the clamping column can not fall off due to the moving groove.

Preferably, the height of the rubber plate is lower than that of the sliding groove, so that the rubber plate does not increase friction on the pointer block and is difficult to move when the pointer block moves.

Preferably, the length of the pressing rod is longer than that of the inner hole of the pointer block, and when the pressing rod is pressed tightly, the protruding part can easily pull out the pressing rod, so that the clamping column is loosened.

Preferably, the width of the pointer block is smaller than the width of the sliding groove, and the pointer block does not interfere with and is difficult to move when sliding in the sliding groove.

Preferably, the axis of the intermediate shaft is symmetrical to the center of the main body, so that the symmetrical center of the whole device is ensured to be on the axis of the intermediate shaft, and errors cannot be caused to experimental results.

Preferably, the length of the left end of the gear rotating shaft is smaller than the gap between the support and the main body, and the gear rotating shaft cannot interfere with the support in the process of moving the pointer block.

(III) advantageous effects

Compared with the prior art, the utility model provides a physics auxiliary device of lever moment experiment possesses following beneficial effect:

1. this physics auxiliary device of lever moment experiment, it is connected with the rack through swing joint epaxial gear of gear revolve, make the pointer piece can remove the result of the different moment of selection moment test, play the effect of removing about fast, later to the push-and-pull of depression bar, the sliding tray of seting up about the depression bar, make and press from both sides tight post outwards or inwards slide, the extrusion is on the rubber slab at both ends about, pull out the depression bar and then press from both sides tight piece and loosen, the tight effect of the clamp of arbitrary moment position in our experiment has been played, thereby the condition of experimenter because of different moment tests in the experiment has been reached, the effect that the quick clamp of quick travel moment pressed from both sides tightly, and the device operates simple and fast, it does not take time, just verify the result for the experiment provides unnecessary time, further verification to the result of experiment has played accurate effect.

2. This physics auxiliary device of lever moment experiment through fixing the semicircle piece of fixing on the turn trough on center pin right side dog and left side, and the center pin is in the pivoted, and the dog supports two places about the semicircle piece, has restricted its rotation range, has reached the experimenter and can not overturn whole main part when laying the hook sign indicating number, also need not hold both ends, and the condition that worry can drop has brought very big facility for the experimenter operation.

Drawings

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

FIG. 2 is a right side sectional view of the structure of the present invention;

FIG. 3 is an enlarged schematic view of the structure A of the present invention;

FIG. 4 is an enlarged schematic view of the structure B of the present invention

FIG. 5 is a right side view of the structure of the present invention;

fig. 6 is a schematic view of the rear view structure of the present invention.

In the figure: 1-bracket, 2-main body, 3-middle shaft, 4-pressure bar, 5-pointer block, 6-V type frame, 7-gear, 8-gear shaft, 9-rack, 10-gear groove, 11-sliding groove, 12-baffle, 13-semicircle block, 14-rotating groove, 15-moving groove, 16-rubber plate, 17-rubber plate groove, 18-clamping column, 19-pressure bar sliding groove, 20-sliding column, 21-clamping column groove, 22-graduation line.

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. 1-6, a physical auxiliary device for lever torque experiment comprises a bracket 1, a main body 2 is movably connected to the top of the bracket 1, the main body 2 is movably connected to the bracket 1 through an intermediate shaft 3, the axis of the intermediate shaft 3 is on the symmetry line of the main body 2, so as to ensure that the symmetry center of the whole device is on the axis of the intermediate shaft 3, and no error is caused to the experimental result, a baffle 12 is fixedly connected to the right side of the intermediate shaft 3, a rotary groove 14 is formed in the middle of the main body 2, a semicircular block 13 is fixedly connected to the left side of the rotary groove 14, a sliding groove 11 is formed in the front surface of the main body 2, a pointer block 5 is slidably connected to the inner wall of the sliding groove 11, the width of the pointer block 5 is smaller than that of the sliding groove 11, when the pointer block slides in the sliding groove 11, interference and difficulty in movement cannot occur, a pressure lever 4, when the pointer block is pressed tightly, the pressing rod 4 is easily pulled out by the protruding part, the clamping columns 18 are loosened, the upper side and the lower side of the pressing rod 4 are both provided with pressing rod sliding grooves 19, the upper side and the lower side of each pressing rod sliding groove 19 are movably connected with the clamping columns 18, the opposite ends of the two clamping columns 18 are fixedly provided with sliding columns 20, the left side of the pointer block 5 is provided with a clamping column groove 21, the position of the clamping column groove 21 is arranged above the rubber plate 16, so that the clamping columns 18 cannot fall off due to the moving groove 15, the clamping columns 18 are movably connected on the inner wall of the clamping column grooves 21, the bottom of the sliding groove 11 is provided with a rubber plate groove 17, the top of the rubber plate groove 17 is fixedly provided with a rubber plate 16, the height of the rubber plate 16 is lower than that of the sliding groove 11, so that the rubber plate 16 cannot increase friction to the pointer block 5 and cannot move easily when the pointer block 5 moves, the bottom of the main body, pointer piece 5's left side fixedly connected with gear shaft 8, gear shaft 8's left end length is less than the clearance between support 1 and the main part 2, at the in-process that removes pointer piece 5, gear shaft 8 can not interfere with support 1, gear shaft 8's outside swing joint has gear 7, gear 7's bottom meshing has rack 9, gear groove 10 has been seted up in main part 2's left side, the bottom at gear groove 10 is fixed to rack 9's bottom, scale mark 22 has been seted up on main part 2's surface.

The working principle is as follows: place the hook sign indicating number on V type frame 6, through the rotation of gear 7 at rack 9, because of different moments, manual quick stir pointer block 5 about in shifting chute 15, later make to the push-and-pull of depression bar 4 press from both sides tight post 18 and reciprocate in pressing from both sides tight post groove 21, to the extrusion of rubber slab 16, make and press from both sides tightly at the re-selected position pointer block 5, can not the off tracking, remove, when the weight because of the hook sign indicating number is different, lead to center pin 3 when rotating the upper end of in-process baffle 12 commentaries on classics semicircle piece 13, its rotation range has been restricted.

To sum up, the physical auxiliary device of the lever moment experiment is connected with the rack 9 through the gear 7 which is movably connected on the gear rotating shaft 8, the pointer block 5 can move left and right to select different torque test results, so as to play a role in moving left and right quickly, then the pressure lever 4 is pushed and pulled, the sliding grooves 11 arranged on the upper and lower parts of the pressure lever 4 enable the clamping columns 18 to slide outwards or inwards, the clamping columns are extruded on the rubber plates 16 at the upper and lower ends, the clamping blocks are loosened by pulling out the pressure lever 4, so as to play a role in clamping any torque position in our experiment, thereby achieving the effect of quickly moving the moment and quickly clamping the moment under the condition of different moment tests by experimenters in the experiment, the device is simple and quick to operate, time is saved, redundant time is provided for experiments to verify results, and the effect of accuracy and no error is achieved on further verification of the experimental results.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. 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 a physics auxiliary device of lever moment experiment, includes support (1), its characterized in that: the top of the support (1) is movably connected with a main body (2), the main body (2) is movably connected onto the support (1) through an intermediate shaft (3), a baffle (12) is fixedly connected to the right side of the intermediate shaft (3), a rotary groove (14) is formed in the middle of the main body (2), a semicircular block (13) is fixedly connected to the left side of the rotary groove (14), a sliding groove (11) is formed in the front side of the main body (2), a pointer block (5) is slidably connected onto the inner wall of the sliding groove (11), a compression rod (4) is movably connected to the axis of the pointer block (5), compression rod sliding grooves (19) are formed in the upper side and the lower side of the compression rod (4), clamping columns (18) are movably connected to the upper side and the lower side of the compression rod sliding groove (19), sliding columns (20) are fixedly installed at opposite ends of the two clamping columns (18), and a clamping column groove (21) is, press from both sides tight post (18) swing joint on the inner wall that presss from both sides tight post groove (21), rubber slab groove (17) have been seted up to the bottom of sliding tray (11), the top fixed mounting in rubber slab groove (17) has rubber slab (16), shifting chute (15) have been seted up to the bottom of main part (2), middle fixedly connected with V type frame (6) of pointer piece (5), the left side fixedly connected with gear shaft (8) of pointer piece (5), the outside swing joint of gear shaft (8) has gear (7), the bottom meshing of gear (7) has rack (9), gear groove (10) have been seted up in the left side of main part (2), the bottom in gear groove (10) is fixed to the bottom of rack (9), scale mark (22) have been seted up on the surface of main part (2).

2. The physical auxiliary device for the lever moment experiment according to claim 1, wherein: the position of the clamping column groove (21) is arranged above the rubber plate (16).

3. The physical auxiliary device for the lever moment experiment according to claim 1, wherein: the height of the rubber plate (16) is lower than that of the sliding groove (11).

4. The physical auxiliary device for the lever moment experiment according to claim 1, wherein: the length of the pressure lever (4) is longer than that of an inner hole of the pointer block (5).

5. The physical auxiliary device for the lever moment experiment according to claim 1, wherein: the width of the pointer block (5) is smaller than that of the sliding groove (11).

6. The physical auxiliary device for the lever moment experiment according to claim 1, wherein: the axis of the intermediate shaft (3) is on the symmetry line of the main body (2).

7. The physical auxiliary device for the lever moment experiment according to claim 1, wherein: the left end length of the gear rotating shaft (8) is smaller than the gap between the support (1) and the main body (2).