CN212229892U

CN212229892U - Force measurement demonstration device for high school physics experiments

Info

Publication number: CN212229892U
Application number: CN202020835651.3U
Authority: CN
Inventors: 朱葵巧
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-12-25
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a force measurement demonstration device for high school physics experiments, which relates to an educational appliance and specifically comprises a base, wherein two ends of the upper surface of the base are respectively fixedly connected with two ends of the bottom surface of a top plate through a support plate, and a horizontal objective table is arranged between the support plates; the middle part fixed mounting of roof has the guide cylinder, and slidable mounting has fixing device in the guide cylinder, and fixed mounting has the spring dynamometer in the fixing device, and the upper surface both ends symmetrical welding of objective table has vertical jib, and the top welding of jib has rings, and rings get in touch fixed connection through the bottom of connecting rope and spring dynamometer, fixing device's upper surface and the bottom fixed connection of connecting rod, and the top of connecting rod stretches out the guide cylinder top welding and has the handle. The utility model discloses an in the use, avoided the dynamometry error that the staff shake caused, simultaneously, reduced frictional force to measuring result's influence, improved dynamometry presentation device's measurement accuracy.

Description

Force measurement demonstration device for high school physics experiments

Technical Field

The utility model relates to an educational appliance, in particular to a force measurement demonstration device for high school physics experiments.

Background

At present, physics is the science of an experiment, and the physics can not be developed and the quality of physics teaching can not be improved when the physics is separated from the physics experiment. The traditional teaching concept is the light practice of the important theory, a teacher only pays attention to the infusion of theoretical knowledge in a classroom, the cultivation of the practice ability of students is neglected, the students only remember some scientific knowledge, problems are solved by using the book theory, the experiment consciousness is very weak, and the practical ability is very poor. Therefore, the existing teaching mode needs to be improved, the experiment link is emphasized in the middle school physics teaching, students can complete the experiment manually, and the practice ability of the students is enhanced.

In the experiment of many physics courses, all need test power, and go on through the spring dynamometer most of the time when testing power, current dynamometry mode is that the user passes through handheld spring dynamometer to pulling spring dynamometer carries out the dynamometry, but like this very easily because people's hand rocks, thereby causes the error to the dynamometry result, reduces measurement accuracy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dynamometry presentation device for high school physics experiments to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a force measurement demonstration device for a high school physics experiment comprises a base, wherein two ends of the upper surface of the base are fixedly connected with the bottom end of a vertically installed supporting plate respectively, the top ends of the supporting plates are fixedly connected with two ends of the bottom surface of a top plate respectively, and a horizontal objective table is installed between the supporting plates;

the middle part fixed mounting of roof has the guide cylinder, and slidable mounting has fixing device in the guide cylinder, and fixed mounting has the spring dynamometer in the fixing device, and the upper surface both ends symmetrical welding of objective table has vertical jib, and the top welding of jib has rings, and rings are through the bottom couple fixed connection of connecting rope with the spring dynamometer, fixing device's upper surface and the bottom fixed connection of connecting rod, and the top of connecting rod stretches out the guide cylinder top welding and has the handle, connecting rod and guide cylinder sliding connection.

As a further aspect of the present invention: the both sides of objective table all rotate through the pivot and install the gyro wheel, the inner wall contact of gyro wheel and backup pad.

As a further aspect of the present invention: the guide cylinder is made of transparent glass.

As a further aspect of the present invention: the guide cylinder and the top plate are integrally formed.

As a further aspect of the present invention: the fixing device mainly comprises a slide block, a fixing hole, a fixing pin, a press plate, a fixing rod, a support rod, a pull ring, a spring and a pull rod, wherein the slide block is slidably arranged in the guide cylinder and slides along the vertical direction, the rear end surface of the guide cylinder is provided with an opening, two ends of the side surface of the slide block facing the opening of the guide cylinder are respectively fixedly connected with one end of the fixing rod, the other end of the fixing rod is respectively fixedly connected with two ends of the support rod, the middle part of the support rod is slidably connected with the pull rod, one end of the pull rod facing the slide block is fixedly connected with the middle part of one side of the press plate, the other end of the pull rod is fixedly connected with the pull ring, the side surface of the pull ring is fixedly connected with one end of the spring, the other end of the spring is fixedly connected, the fixing pin is inserted into the fixing hole so as to hang and fix the hook at the top of the spring dynamometer.

Compared with the prior art, the beneficial effects of the utility model are that: in the use process of the utility model, the spring dynamometer is fixed by the fixing device, and the fixing device is slidably mounted in the guide cylinder, so that a stable state is kept in the lifting process of the spring dynamometer, force measurement errors caused by hand shaking are avoided, and meanwhile, rolling friction is formed between the objective table and the support plate by arranging the rollers on two sides of the objective table, thereby effectively reducing the influence of friction force on a measurement result and improving the measurement precision of the force measurement demonstration device; and the spring dynamometer is easy to operate when being replaced, and the use difficulty of a user is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a force measurement demonstration device for a high school physics experiment.

Fig. 2 is a top view of a fixing device in a force measurement demonstration device for high school physics experiments.

As shown in the figure: the device comprises a base 1, a supporting plate 2, an object stage 3, a roller 4, a suspension rod 5, a suspension ring 6, a top plate 7, a spring dynamometer 8, a fixing device 9, a sliding block 91, a fixing hole 92, a fixing pin 93, a pressing plate 94, a fixing rod 95, a supporting rod 96, a pull ring 97, a spring 98, a pull rod 99, a handle 10, a connecting rod 11 and a guide cylinder 12.

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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, in an embodiment of the present invention, a force measurement demonstration apparatus for high school physics experiments includes a base 1, both ends of an upper surface of the base 1 are respectively fixedly connected with a bottom end of a vertically installed supporting plate 2, a top end of the supporting plate 2 is respectively fixedly connected with both ends of a bottom surface of a top plate 7, a horizontal objective table 3 is installed between the supporting plates 2, rollers 4 are rotatably installed on both sides of the objective table 3 through rotating shafts, the rollers 4 are in contact with an inner wall of the supporting plate 2, and rolling friction is formed between the objective table 3 and the supporting plate 2 through the rollers 4, so that influence of friction on a measurement result is effectively reduced;

the middle part of roof 7 is fixed with guide cylinder 12, guide cylinder 12 is made by transparent glass, guide cylinder 12 and roof 7 integrated into one piece, slidable mounting has fixing device 9 in guide cylinder 12, fixed mounting has spring dynamometer 8 in fixing device 9, the symmetrical welding in both ends of the upper surface of objective table 3 has vertical jib 5, the welding in top of jib 5 has rings 6, rings 6 pass through the bottom couple fixed connection of connecting rope and spring dynamometer 8, the upper surface of fixing device 9 and the bottom fixed connection of connecting rod 11, the top of connecting rod 11 stretches out guide cylinder 12 top and welds handle 10, connecting rod 11 and guide cylinder 12 sliding connection, when using, drive fixing device 9 and spring dynamometer 8 upwards to slide through connecting rod 11 with handle 10, thereby carry out the dynamometry to the object on objective table 3, the dynamometry error that the hand shake caused has effectively been avoided, the force measurement accuracy is improved;

the fixing device 9 mainly comprises a sliding block 91, a fixing hole 92, a fixing pin 93, a pressing plate 94, a fixing rod 95, a supporting rod 96, a pull ring 97, a spring 98 and a pull rod 99, wherein the sliding block 91 is slidably installed in the guide cylinder 12 and slides along the vertical direction, the rear end face of the guide cylinder 12 is provided with an opening, two ends of the side face, facing the opening of the guide cylinder 12, of the sliding block 91 are respectively and fixedly connected with one end of the fixing rod 95, the other end of the fixing rod 95 is respectively and fixedly connected with two ends of the supporting rod 96, the middle part of the supporting rod 96 is slidably connected with the pull rod 99, one end, facing the sliding block 91, of the pull rod 99 is fixedly connected with the middle part of one side of the pressing plate 94, the other end of the pull rod 99 is fixedly connected with the pull ring 97, the side face of the pull ring 97 is fixedly connected, the welding has fixed pin 93 in the middle part of the opposite side of clamp plate 94, fixed orifices 92 have been seted up to the position that corresponds fixed pin 93 on slider 91, in using, push down spring dynamometer 8 through clamp plate 94, avoid spring dynamometer 8 to rock, and simultaneously, thereby insert in fixed orifices 92 through fixed pin 93 and hang the couple at 8 tops of spring dynamometer fixedly, pull ring 97 pulling pull rod 99 drives clamp plate 94 and makes fixed pin 93 and fixed orifices 92 separation, can accomplish the change to spring dynamometer 8, and the operation is simple, high durability and convenient use.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention, and the following claims are therefore to be read in this light of the appended claims.

Claims

1. A force measurement demonstration device for a high school physics experiment comprises a base (1) and is characterized in that two ends of the upper surface of the base (1) are fixedly connected with the bottom end of a vertically installed supporting plate (2) respectively, the top end of the supporting plate (2) is fixedly connected with two ends of the bottom surface of a top plate (7) respectively, and a horizontal objective table (3) is installed between the supporting plates (2);

the middle part fixed mounting of roof (7) has guide cylinder (12), slidable mounting has fixing device (9) in guide cylinder (12), fixed mounting has spring dynamometer (8) in fixing device (9), the upper surface both ends symmetrical welding of objective table (3) has vertical jib (5), the top welding of jib (5) has rings (6), rings (6) are through the bottom couple fixed connection of connecting rope with spring dynamometer (8), the upper surface of fixing device (9) and the bottom fixed connection of connecting rod (11), the top of connecting rod (11) is stretched out guide cylinder (12) top welding and is had handle (10), connecting rod (11) and guide cylinder (12) sliding connection.

2. The force measurement demonstration device for the high school physics experiments according to claim 1, wherein the two sides of the object stage (3) are rotatably provided with rollers (4) through rotating shafts, and the rollers (4) are in contact with the inner wall of the support plate (2).

3. Force measurement demonstration device for high school physics experiments according to claim 1 characterized in that the guiding cylinder (12) is made of transparent glass.

4. The force measurement demonstration device for high school physics experiments according to claim 1 characterized in that the guide cylinder (12) is integrated with the top plate (7).

5. The force measurement demonstration device for the high school physics experiments as claimed in claim 1, wherein said fixing device (9) is mainly composed of a sliding block (91), a fixing hole (92), a fixing pin (93), a pressing plate (94), a fixing rod (95), a support rod (96), a pull ring (97), a spring (98) and a pull rod (99), the sliding block (91) is slidably installed in the guide cylinder (12) and slides along the vertical direction, the rear end face of the guide cylinder (12) is opened to form an opening, two ends of the side face of the sliding block (91) facing the opening of the guide cylinder (12) are respectively fixedly connected with one end of a fixing rod (95), the other ends of the fixing rods (95) are respectively fixedly connected with two ends of the support rod (96), the middle of the support rod (96) is slidably connected with the pull rod (99), one end of the pull rod (99) facing the sliding block (91) is fixedly connected with the middle of one side of the, the other end fixedly connected with pull ring (97) of pull rod (99), the side of pull ring (97) and the one end fixed connection of spring (98), the other end of spring (98) and the middle part fixed connection of bracing piece (96), the both ends of clamp plate (94) respectively with dead lever (95) sliding connection, the opposite side middle part welding of clamp plate (94) has fixed pin (93), fixed orifices (92) have been seted up to the position that corresponds fixed pin (93) on slider (91), thereby fixed pin (93) are inserted in fixed orifices (92) and are hung the couple at spring dynamometer (8) top fixedly.