CN219223881U

CN219223881U - Tray balance for experiments

Info

Publication number: CN219223881U
Application number: CN202320711549.6U
Authority: CN
Inventors: 花亦阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-06-20
Anticipated expiration: 2033-04-04

Abstract

The utility model belongs to the technical field of teaching instruments, and particularly relates to a tray balance for experiments, which comprises a supporting seat, wherein a supporting column is fixedly connected to the upper side of the supporting seat, a cross beam is rotatably connected to the supporting column, the cross beam penetrates through a supporting device, a tray assembly is placed on the supporting device, the supporting device comprises a fixing assembly, and the fixing assembly is arranged above the supporting seat; the connecting piece is fixedly connected with the fixing component and hinged with the cross beam; and the guide rod is fixedly connected with the connecting piece. This tray balance for experiments passes through strutting arrangement and tray assembly's use, makes the tray body can be by stable placing, prevents that the phenomenon of tray body displacement from appearing when the object slides, and the internal surface of tray body is the concave surface simultaneously, is convenient for make the object remove to the center of tray body, prevents that the object from sliding or rolling on the tray body, improves the weighing result of object.

Description

Tray balance for experiments

Technical Field

The utility model relates to the technical field of teaching instruments, in particular to a tray balance for experiments.

Background

The tray balance is a commonly used weighing tool in a laboratory, and is manufactured according to the lever principle, a small tray is arranged at each of two ends of a lever, an object to be weighed is placed at the left end, a weight is placed at the right end, a pointer is arranged at the center of the lever, when the two ends are balanced, the two ends have equal mass, and the tray balance is a commonly used weighing tool, so that the tray balance for physical teaching experiments is required during physical course experiments.

At present, the current pallet balance, for example, the chinese patent with publication number CN212254278U discloses a pallet balance for physical teaching experiments, and the device can make the pallet balance be in horizontal position, improves the precision of pallet balance when using, however, the device still has certain not enough when using: after the tray is placed on the tray iron stand, as the weighing object is not necessarily a square object, the weighing object can be a round object, the object can slide easily on the tray, when the gravity center of the object deviates to one side of the weight tray, the weighing result of the object is caused to be smaller, when the gravity center of the object is far away from one side of the weight tray, the weighing result of the object is caused to be bigger, and further the weighing result has larger influence, and therefore, the tray balance for experiments is provided.

Disclosure of Invention

The utility model mainly aims to provide an experimental tray balance which can solve the problems in the background technology.

In order to achieve the above object, the tray balance for experiments provided by the utility model comprises a supporting seat, wherein a supporting column is fixedly connected to the upper side of the supporting seat, the supporting column is rotatably connected with a cross beam, the cross beam penetrates through a supporting device, a tray assembly is placed on the supporting device, and the supporting device comprises:

the fixing component is arranged above the supporting seat;

the connecting piece is fixedly connected with the fixing component and hinged with the cross beam;

and the guide rod is fixedly connected with the connecting piece.

Preferably, the fixed subassembly includes the backup pad, and backup pad fixed connection is in the upside of connecting piece, backup pad fixedly connected with loop bar, sliding connection has the slider on the inner wall of loop bar, one side fixedly connected with connecting rod that the backup pad was kept away from to the slider.

Preferably, the connecting rod runs through the inner wall of loop bar and with the inner wall sliding connection of loop bar, the slider passes through reset spring elastic connection with the inner wall of loop bar, the one end fixedly connected with fixed plate of slider is kept away from to the connecting rod, through the use of fixed plate, can fix the tray body, improves the stability that the tray body used.

Preferably, the tray assembly comprises a tray body, the inner wall of the tray body is connected with a lug in a sliding manner, the lower side of the lug is fixedly connected with an elastic strip, the elastic strip is fixedly connected in the inner wall of the tray body, and after the lug is contracted, the lug can be reset through the use of the elastic strip.

Preferably, the rubber ring is fixedly connected to the outer wall of the supporting seat, and through the use of the rubber ring, the connecting piece can be impacted on the rubber ring when descending, so that the connecting piece is prevented from being impacted with the supporting seat directly, and the connecting piece is protected.

Preferably, the outer wall of the cross beam is fixedly connected with a pointer.

Advantageous effects

The utility model provides a tray balance for experiments. The beneficial effects are as follows:

(1) The tray balance for experiments enables the tray body to be stably placed through the supporting device and the tray assembly, prevents the phenomenon that the tray body is displaced when an object slides, and simultaneously enables the object to move towards the center of the tray body conveniently due to the fact that the inner surface of the tray body is a concave surface, and the weighing result of the object is improved.

(2) The tray balance for experiments can prevent objects from sliding or rolling on the tray body when the tray body fluctuates up and down through the lug in the center of the tray body, so that stability of the objects in the weighing process is guaranteed, the objects are prevented from rolling out of the tray body, and weighing of the objects is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall three-dimensional structure of the present utility model;

FIG. 2 is a schematic view of a fixing assembly according to the present utility model;

FIG. 3 is a schematic view of a portion of a three-dimensional structure of the present utility model;

fig. 4 is a schematic elevational cross-sectional view of a portion of the tray body of the present utility model.

Reference numerals illustrate:

1. a support base; 2. a support column; 3. a cross beam; 4. a support device; 5. a tray assembly; 101. a rubber ring; 31. a pointer; 41. a fixing assembly; 42. a connecting piece; 43. a guide rod; 411. a support plate; 412. a loop bar; 413. a slide block; 414. a connecting rod; 415. a return spring; 416. a fixing plate; 51. a tray body; 52. a bump; 53. an elastic strip.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the utility model provides a tray balance for experiments, which comprises a supporting seat 1, wherein a rubber ring 101 is fixedly connected to the outer wall of the supporting seat 1, through the use of the rubber ring 101, a connecting piece 42 can be prevented from being directly contacted with the supporting seat 1 when lifting and lowering, the connecting piece 42 plays a role in protecting, a supporting column 2 is fixedly connected to the upper side of the supporting seat 1, a cross beam 3 is rotatably connected to the supporting column 2, a marking scale and a travelling code sliding on the marking scale are fixedly installed on the outer wall of the cross beam 3, a pointer 31 is fixedly connected to the outer wall of the cross beam 3, an index plate is fixedly connected to the upper side of the supporting column 2, the index plate is pointed through the pointer 31, a weighing result is conveniently known, the cross beam 3 penetrates through a supporting device 4, the supporting device 4 is used, the supporting device 4 can stably support a tray assembly 5, the supporting device 4 comprises a fixing component 41, the fixing component 41 is arranged above the supporting seat 1, the fixing component 41 is fixedly connected with the connecting piece 42, the connecting piece 42 is hinged with the cross beam 3, the connecting piece 42 is fixedly connected with the guide rod 43, and the guide rod 43 is used for fixing the guide rod, and the guide rod 43 is used for placing an object in a symmetrical lifting and lowering process, and lowering the object, and the object and the device and the object is stable.

In the embodiment of the utility model, in order to stably place an object, the placed object is located at the center of the tray assembly 5, so that the accuracy of weighing the object later is improved, specifically, the tray assembly 5 comprises a tray body 51, the inner surface of the tray body 51 is in a concave arc shape, a round object is conveniently rolled down to the center of the tray body 51, a bump 52 is slidingly connected to the inner wall of the tray body 51, the bump 52 is in a wedge shape, one side close to the center of the tray body 51 is in a vertical state with the inner surface of the tray body 51, an elastic strip 53 is fixedly connected to the lower side of the bump 52, the elastic strip 53 is fixedly connected to the inner wall of the tray body 51, when the object is placed in the tray body 51, the object moves towards the center of the tray body 51, the bump 52 is compressed at this time, after the object passes through the bump 52, the bump 52 is reset under the action of the elastic strip 53, the round object is prevented from falling out of the tray body 51 when the object is weighed up and down, and the stability of weighing the round object can be improved.

Further, in order to improve stability of the tray body 51 when placing, specifically, the fixing assembly 41 includes the backup pad 411, and backup pad 411 fixed connection is in the upside of connecting piece 42, backup pad 411 fixedly connected with loop bar 412, sliding connection has slider 413 on the inner wall of loop bar 412, one side that slider 413 kept away from backup pad 411 is fixedly connected with connecting rod 414, slide in loop bar 412 through connecting rod 414, can adjust the amount that connecting rod 414 stretches out on loop bar 412, connecting rod 414 runs through the inner wall of loop bar 412 and with the inner wall sliding connection of loop bar 412, slider 413 passes through reset spring 415 elastic connection with the inner wall of loop bar 412, the elastic coefficient of reset spring 415 is great, after driving slider 413 compression reset spring 415 through connecting rod 414, can make fixed plate 416 fixed tray body 51 of equidimension, one end fixedly connected with fixed plate 416 of slider 413 is kept away from to the connecting rod 414, through supporting tray body 51 down with fixed plate 416, make fixed plate 416 drive connecting rod 414 to move to the direction of keeping away from loop bar 412, and then make slider 413 compress reset spring 415, accomplish the fixed tray body 51 of the displacement when preventing the tray body from sliding.

In the utility model, when in use, the outer wall of the tray body 51 is propped against the fixing plate 416, then the tray body 51 is pressed downwards, the fixing plate 416 drives the connecting rod 414 to move away from the sleeve rod 412, the sliding block 413 compresses the return spring 415, the fixing of the tray body 51 is completed, then an object is placed in the tray body 51, the circular object moves towards the center of the tray body 51, the protruding block 52 is compressed, after the object passes through the protruding block 52, the protruding block 52 is reset under the action of the elastic strip 53, then the weighing of the object is carried out, the tray body 51 fluctuates up and down in the weighing process of the object, and the object is prevented from rolling out of the tray body 51 until the weighing of the object is finished under the action of the protruding block 52.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. The utility model provides a tray balance for experiments, includes supporting seat (1), its characterized in that: the upside fixedly connected with support column (2) of supporting seat (1), support column (2) rotate and are connected with crossbeam (3), crossbeam (3) run through strutting arrangement (4), tray subassembly (5) have been placed on strutting arrangement (4), strutting arrangement (4) include:

the fixing assembly (41) is arranged above the supporting seat (1);

the connecting piece (42) is fixedly connected with the fixing assembly (41), and the connecting piece (42) is hinged with the cross beam (3);

and a guide rod (43), wherein the guide rod (43) is fixedly connected with the connecting piece (42).

2. The tray balance for experiments according to claim 1, wherein: the fixing assembly (41) comprises a supporting plate (411), the supporting plate (411) is fixedly connected to the upper side of the connecting piece (42), a sleeve rod (412) is fixedly connected to the supporting plate (411), a sliding block (413) is connected to the inner wall of the sleeve rod (412) in a sliding mode, and a connecting rod (414) is fixedly connected to one side, far away from the supporting plate (411), of the sliding block (413).

3. A tray balance for experiments as claimed in claim 2, wherein: the connecting rod (414) penetrates through the inner wall of the loop bar (412) and is in sliding connection with the inner wall of the loop bar (412), the sliding block (413) is elastically connected with the inner wall of the loop bar (412) through a return spring (415), and one end, far away from the sliding block (413), of the connecting rod (414) is fixedly connected with a fixing plate (416).

4. The tray balance for experiments according to claim 1, wherein: the tray assembly (5) comprises a tray body (51), a lug (52) is connected to the inner wall of the tray body (51) in a sliding mode, an elastic strip (53) is fixedly connected to the lower side of the lug (52), and the elastic strip (53) is fixedly connected to the inner wall of the tray body (51).

5. The tray balance for experiments according to claim 1, wherein: the outer wall of the supporting seat (1) is fixedly connected with a rubber ring (101).

6. The tray balance for experiments according to claim 1, wherein: the outer wall of the cross beam (3) is fixedly connected with a pointer (31).