CN224052751U - A physical experiment demonstration pulley bracket - Google Patents

Abstract

This utility model discloses a physics experiment demonstration pulley bracket, relating to the field of physics experiment teaching. It includes a fixed plate, a support rod vertically mounted on the fixed plate, a detachable crossbeam mounted on the top of the support rod, a hook assembly horizontally mounted on the crossbeam, and an indicator assembly parallel to the crossbeam and capable of vertical movement on the support rod. This physics experiment demonstration pulley bracket facilitates the measurement of data such as the distance the weight moves and the distance the pulley block's tension point moves, thereby improving the accuracy of experimental results and the efficiency of experimental teaching.

Description

Physical experiment demonstration pulley support

Technical Field

The utility model relates to the field of physical experiment teaching, in particular to a physical experiment demonstration pulley bracket.

Background

In the physical teaching process, pulley experiments are important contents of mechanical teaching. Through the working characteristics of experimental demonstration pulleys, students can be helped to understand the working principle more intuitively and master relevant physical knowledge. In the demonstration process, data such as the moving distance of the weight, the moving distance of the acting point of the pulley block and the like are needed to be measured sometimes, so that students can understand related principles conveniently.

However, existing pulley experimental devices lack effective auxiliary measuring tools. Usually, only a simple measuring tool such as a ruler can be used for manual measurement, so that the measurement process is complicated, and the measurement position is difficult to accurately determine, so that the measurement error is large. This not only affects the accuracy of the experimental results, but also reduces the efficiency of experimental teaching.

Disclosure of utility model

The utility model aims to provide a physical experiment demonstration pulley bracket which is convenient for measuring data such as the moving distance of a weight, the moving distance of a pulley block pulling force acting point and the like, so that the accuracy of an experiment result and the efficiency of experiment teaching are improved.

The optimized structure is realized by the following technical scheme that the pulley bracket for demonstrating physical experiment comprises a fixed plate;

the support rod is vertically arranged on the fixed plate;

The cross beam is detachably arranged at the top of the supporting rod;

the hook component is transversely arranged on the cross beam;

The indication assembly is arranged in parallel with the cross beam and can vertically move on the support rod.

In some embodiments, the support bar comprises a bar body vertically disposed on the fixed plate;

The sliding groove is arranged on one end surface of the rod body, and the indicating assembly is arranged in the sliding groove;

And the strip teeth are arranged on one side wall of the sliding groove.

In some embodiments, the indicating assembly includes a slider slidably disposed within the sliding channel;

the rotating groove is formed in one side, close to the strip teeth, of the sliding block;

The gear is rotatably arranged in the rotating groove and meshed with the strip teeth;

The adjusting piece is connected with the gear;

The indicating rod is transversely arranged on the sliding block and is arranged outside the rod body;

The scale is vertically arranged on one end surface of the rod body, which is close to the indicating rod.

In some embodiments, the adjusting piece comprises a rotating shaft, one end of the rotating shaft is rotatably connected with the inner wall of the rotating groove, the other end of the rotating shaft protrudes out of the sliding groove, and the gear is coaxially arranged on the rotating shaft;

the ratchet wheel is coaxially sleeved on the rotating shaft;

And the pawl is rotatably arranged on the sliding block and meshed with the ratchet wheel.

In some embodiments, the adjustment member further comprises an adjustment handle fixedly coupled to the pawl.

In some embodiments, the indicating assembly further comprises a connection block provided on the sliding block and protruding the sliding groove;

The connecting groove transversely penetrates through the connecting block, and the indicating rod is inserted into the connecting groove;

At least two connecting bolts, two connecting bolt tops run through the connecting block bottom to compress tightly the pilot pin bottom surface, connecting bolt with connecting block spiro union cooperation.

In some embodiments, the sliding channel is H-shaped in cross section.

In summary, the utility model has the following beneficial effects:

This kind of physical experiment demonstration pulley support passes through the sliding block and slides in the sliding tray, and the position of adjustable pilot lever on the bracing piece to make the pilot lever accurate directional experiment object, the scale on the cooperation body of rod can accurate measurement heavy object travel distance, assembly pulley pulling force action point travel distance etc. experimental data, effectively reduce measuring error, improve the accuracy of experimental result, experimental teaching's efficiency.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a schematic cross-sectional view of a brace according to the present utility model;

fig. 4 is a schematic structural view of the indication assembly of the present utility model.

The device comprises a fixing plate, a supporting rod, a rod body, a sliding groove, a bar tooth, a cross beam, a hook component, a indicating component, a sliding block, a rotating groove, a gear, a regulating piece, 541, a rotating shaft, 542, a ratchet wheel, 543, a pawl, 55, an indicating rod, 56, a connecting block, 57 and a connecting bolt, wherein the fixing plate, the supporting rod, the bar tooth, the bar body, the sliding groove, the bar tooth, the cross beam, the hook component, the indicating component, the sliding block, the rotating groove, the gear and the connecting bolt are arranged in the figure.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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, a physical experiment demonstration pulley bracket comprises a fixed plate 1, a supporting rod 2, a cross beam 3, a hook component 4 and an indication component 5, wherein the fixed plate 1 can be placed on an experiment table surface, and a weight can be placed on the fixed plate 1 to ensure that the bracket cannot displace in the experiment process. The bracing piece 2 is vertical to be located on the fixed plate 1, can provide the installation basis for crossbeam and instruction subassembly, bracing piece 2 and fixed plate 1 accessible bolt can dismantle the connection, the bracing piece 2 top is located in crossbeam 3 detachable, accessible bolt can dismantle the connection, the installation and the dismantlement of crossbeam 3 and bracing piece 2 of being convenient for, thereby after the experiment is finished, the storage of pulley bracket, couple subassembly 4 transversely locates on crossbeam 3, be used for hanging experimental equipment such as pulley, heavy object, the quantity and the interval of couple can be adjusted according to the experiment needs, in order to conveniently hang the pulley and the heavy object of different quantity and specification, couple subassembly 4 can be the couple of locating crossbeam 3 bottom, this is prior art, this is unnecessary, instruction subassembly 5 and crossbeam 3 parallel arrangement, and can be on bracing piece 2 vertical movement, can accurate measurement heavy object travel distance, the experimental data such as assembly pulley block pulling force action point travel distance, effectively reduce measuring error, improve the accuracy of experimental result. The indication component 5 and the cross beam 3 are arranged at two ends of the supporting rod 2, so that the separation of the indication component 5 and the hook component 4 can be realized, the indication component 5 is prevented from influencing the movement of the pulley and the weight, the gravity center of the pulley bracket is prevented from deviating from one end, and the stability of the pulley bracket is improved.

In some embodiments, the support rod 2 includes a rod body 21, a sliding groove 22 and a bar tooth 23, the rod body 21 is vertically arranged on the fixed plate 1, the sliding groove 22 is arranged on one end surface of the rod body 21, and the sliding groove 22 is internally provided with the indicating component 5, so that stable sliding of the indicating component 5 can be realized, and the bar tooth 23 is arranged on one side wall of the sliding groove 22 and can be mutually matched with a gear 53 in the indicating component 5, so that accurate movement and positioning of the indicating component 5 in the sliding groove 22 can be realized.

In some embodiments, the indicating assembly 5 includes a sliding block 51, a rotating groove 52, a gear 53, an adjusting piece 54, an indicating rod 55, a scale, a connecting block 56, a connecting groove and a connecting bolt 57, the sliding block 51 is slidably disposed in the sliding groove 22, the rotating groove 52 is disposed on one side of the sliding block 51 close to the bar teeth 23, the gear 53 is rotatably disposed in the rotating groove 52 and meshed with the bar teeth 23, the sliding of the sliding block 51 in the sliding groove 22 is realized through the meshing with the bar teeth 23, the adjusting piece 54 is connected with the gear 53, the rotation of the gear 53 can be controlled, thereby adjusting the position of the indicating assembly 5, the indicating rod 55 is transversely disposed on the sliding block 51 and is disposed outside the rod body 21 for indicating the measuring position, the scale is vertically disposed on one end surface of the rod body 21 close to the indicating rod 55, the scale can be engraved by laser, the accuracy and durability of the scale can be ensured, and the scale can be matched with the indicating rod, and the accurate measurement of experimental data can be realized.

In some embodiments, the adjusting member 54 includes a rotating shaft 541, a ratchet 542, and a pawl 543, one end of the rotating shaft 541 is rotatably connected to an inner wall of the rotating groove 52, the other end protrudes out of the sliding groove 22, and a gear 53 is coaxially disposed on the rotating shaft 541, the ratchet 542 is coaxially sleeved on the rotating shaft 541, the pawl 543 is rotatably disposed on the sliding block 51 and is meshed with the ratchet 542, and the pawl 543 is controlled to engage with and disengage from the ratchet 542 by adjusting the rotation of the pawl 543, so as to lock and unlock the rotation of the gear 53, thereby adjusting the position of the indicating assembly 5.

In some embodiments, the adjustment member 54 further includes an adjustment handle fixedly coupled to the pawl 543 to facilitate adjustment of the pawl 543 to thereby effect adjustment of the adjustment member 54.

In some embodiments, the indicating assembly 5 further includes a connection block 56, a connection groove, at least two connection bolts 57, the connection block 56 is disposed on the sliding block 51 and protrudes out of the sliding groove 22, the connection groove transversely penetrates through the connection block 56, the indication rod 55 is inserted into the connection groove, the tops of the two connection bolts 57 penetrate through the bottom of the connection block 56 and are pressed on the bottom surface of the indication rod 55, the connection bolts 57 are in threaded fit with the connection block 56, and the extension length of the indication rod 55 can be conveniently adjusted by adjusting the tightening degree of the connection bolts so as to meet the measurement requirements of different experiments.

In some embodiments, the cross section of the sliding groove 22 is H-shaped, which can increase the contact area between the sliding block 51 and the sliding groove 22, and provide a stable track for sliding the sliding block 51, so as to prevent the indication assembly 5 from shaking or separating during sliding.

The specific working principle is as follows:

When the experimental device is specifically used, the fixing plate 1 is placed on an experimental table top, the supporting rod 2 is fixed on the fixing plate 1, the cross beam 3 is installed at the top of the supporting rod 2, the hook component 4 is fixed on the cross beam 3 according to actual needs, the indicating rod 55 is inserted into the connecting groove, the indicating rod 55 is fixed on the sliding block 51 through the connecting bolt 57, and the experimental device is installed.

In the course of the experiment, according to the experiment requirement, the required pulley and weight are hung on the hook assembly 4 to be in the initial position, the pawl 543 is adjusted to separate the pawl 543 from the ratchet 542, the rotation lock of the gear 53 is released, the sliding block 51 is moved to slide in the rotation groove 52 to align the indication rod 55 with the experiment measuring position, the initial position is read through the scale, and then the pawl 543 is rotated to engage the pawl 543 with the ratchet 542.

In the experimental process, the positions of the pulleys and the weights are adjusted according to the experimental requirements so as to be in a final state. The pawl 543 is adjusted to separate the pawl 543 from the ratchet gear 542, align the indication lever 55 with the experimental measurement position, and read the final position through the scale, thereby accurately obtaining the distance of the movement of the weight.

And at the end of the experiment, disassembling the experimental equipment, and storing all parts of the bracket for the next use.

The foregoing embodiments are merely for illustrating the technical solution of the present utility model, but not for limiting the same, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that modifications may be made to the technical solution described in the foregoing embodiments or equivalents may be substituted for parts of the technical features thereof, and that such modifications or substitutions do not depart from the spirit and scope of the technical solution of the embodiments of the present utility model in essence.

Claims (7)

1. The pulley bracket for demonstrating physical experiments is characterized by comprising a fixed plate (1);

The support rod (2) is vertically arranged on the fixed plate (1);

The cross beam (3) is detachably arranged at the top of the supporting rod (2);

The hook component (4) is transversely arranged on the cross beam (3);

The indication assembly (5) is arranged in parallel with the cross beam (3) and can vertically move on the support rod (2).

2. The physical experiment demonstration pulley bracket according to claim 1, wherein the supporting rod (2) comprises a rod body (21), and the rod body (21) is vertically arranged on the fixed plate (1);

The sliding groove (22) is formed in one end surface of the rod body (21), and the indicating assembly (5) is arranged in the sliding groove (22);

And the strip teeth (23) are arranged on one side wall of the sliding groove (22).

3. The physical experiment demonstration pulley bracket as claimed in claim 2, wherein the indicating assembly (5) comprises a sliding block (51), and the sliding block (51) is slidably arranged in the sliding groove (22);

A rotating groove (52), wherein the rotating groove (52) is arranged on one side of the sliding block (51) close to the strip teeth (23);

The gear (53) can be rotatably arranged in the rotating groove (52) and meshed with the strip teeth (23);

an adjusting member (54), the adjusting member (54) being connected to the gear (53);

The indication rod (55) is transversely arranged on the sliding block (51) and is arranged outside the rod body (21);

The scale is vertically arranged on one end surface of the rod body (21) close to the indicating rod (55).

4. The physical experiment demonstration pulley bracket according to claim 3, wherein the adjusting member (54) comprises a rotating shaft (541), one end of the rotating shaft (541) is rotatably connected to the inner wall of the rotating groove (52), the other end of the rotating shaft protrudes out of the sliding groove (22), and the gear (53) is coaxially arranged on the rotating shaft (541);

A ratchet wheel (542), wherein the ratchet wheel (542) is coaxially sleeved on the rotating shaft (541);

And the pawl (543) is rotatably arranged on the sliding block (51) and is meshed with the ratchet wheel (542).

5. The physical experiment demonstration pulley stand as claimed in claim 4, wherein the adjusting member (54) further comprises an adjusting handle fixedly connected with the pawl (543).

6. The physical experiment demonstration pulley stand as claimed in claim 3, wherein the indicating assembly (5) further comprises a connecting block (56), the connecting block (56) is arranged on the sliding block (51) and protrudes out of the sliding groove (22);

A connecting groove which transversely penetrates the connecting block (56), and the indicating rod (55) is inserted into the connecting groove;

The two connecting bolts (57) penetrate through the bottoms of the connecting blocks (56) at the tops of the two connecting bolts (57) and are pressed on the bottom surface of the indicating rod (55), and the connecting bolts (57) are in threaded fit with the connecting blocks (56).

7. A physical experiment demonstrating pulley bracket as set forth in claim 2, characterized in that the cross section of the sliding groove (22) is H-shaped.