Mechanical extension experiment demonstration device

Abstract

A mechanical extension experiment demonstration device belongs to the technical field of mechanical experiment equipment, and comprises an experiment table and a rope, the experiment table is provided with a demonstration mechanism and is used for carrying out an extension experiment on the rope, and the demonstration mechanism comprises an execution assembly which is arranged on the experiment table and is used for applying a pulling force to the rope; the fixing assembly is arranged on the experiment table and used for fixing the two ends of the rope; the anti-disengaging assembly comprises a barrel shell arranged on the fixing assembly, a packing head placed in the barrel shell, a plurality of open grooves formed in the packing head and distributed in the circumference, a packing sleeve placed in the barrel shell, the packing sleeve is arranged on the packing head in a sleeving mode, and a plug sleeve is installed at the lower end of the barrel shell in a threaded mode; the fixing assembly comprises vertical frames fixed to the two sides of the top of the experiment table and four-jaw chucks installed on the inner walls of the upper ends of the vertical frames. When the rope accidentally falls off in the stretching process, the end of the rope can be limited to be separated from the fixing assembly through the anti-falling assembly, and therefore accidents are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of mechanics experiment equipment, and relates to a mechanics extension experiment device, in particular to a demonstration device for mechanics extension experiment. BACKGROUND

[0002] The mechanics extension experiment demonstration device is an experimental tool for displaying and analyzing the extension performance of materials under the action of mechanics. The device simulates different mechanical environments, such as stretching, compression, bending, etc., to observe and analyze the mechanical properties of materials such as deformation, strength and toughness.

[0003] Chinese patent application number CN202110696744.1 invention patent discloses a kind of multifunctional mechanics experiment device, and this technical solution includes base, operating controller, motor, rotary drum, swing arm and steel ball, operating controller and motor are all arranged on base, transmission belt is connected between motor and rotary drum, first rotating shaft is threadedly connected on rotary drum, first rotating shaft is threadedly connected with swing arm, scale line is arranged on swing arm, swing arm is provided with slot, friction plate is arranged in slot, support rod is rotatably connected on both sides of swing arm, tension measuring module is arranged on swing arm, second rotating shaft and tension measuring wheel are arranged in tension measuring module, traction line is coated on second rotating shaft, traction line is provided with connecting head, gear is coated on second rotating shaft, rack is embedded in first rotating shaft, etc. Technical features solve the problem of single function and space occupation of existing experimental instruments and equipment, and can be used for measurement and demonstration of centripetal force and friction force and other technical problems.

[0004] In the process of testing the extension performance of rope-like materials, clamps are usually used to stably fix both ends of the rope, and then tension is applied to the rope to evaluate its ductility. However, if the clamping force of the clamp is insufficient or the surface of the rope is worn, the rope may accidentally fall off during stretching. This falling phenomenon, accompanied by continuous tension on the clamp or test device, not only may cause damage to the clamp itself, but also may cause damage to the key components of the test equipment, and even may trigger a series of serious safety accidents, posing a potential threat to the test environment and operators. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiencies in the prior art, and provides a mechanics extension experiment demonstration device to prevent the end of the rope from detaching from the fixing assembly when the rope accidentally falls off during stretching, thereby avoiding accidents and further improving the safety in use.

[0006] The mechanics extension experiment demonstration device provided in the present application adopts the following technical solutions:

[0007] The utility model provides a kind of mechanics ductility experiment demonstration device, including experiment table and rope, and the demonstration mechanism is set on the experiment table and is used to carry out ductility experiment to rope, and the demonstration mechanism includes:

[0008] Execution component is set on the experiment table and is used to exert tension to rope;

[0009] Fixed component is set on the experiment table and is used to fix the both ends of rope;

[0010] Anti-drop component includes the barrel shell set on fixed component, the forced head placed inside the barrel shell, the several slot distributed in circumference opened in forced head, the forced sleeve placed inside the barrel shell, and forced sleeve is sleeved on forced head, and the sleeve is installed in the lower end of barrel shell.

[0011] Further, the fixed component includes the stand fixed on the top of the experiment table two sides, the four-jaw chuck mounted on the upper end inner wall of stand, the through hole opened in the upper end inside of stand, and the reinforcing rib fixed between the vertical plane of stand and experiment table.

[0012] Further, the fixed component further includes the safety chain fixed on the outer wall of stand, and the other end of safety chain is fixed with barrel shell.

[0013] Further, the anti-drop component further includes the disc seat fixed on the outer wall of the upper end of barrel shell, and the diameter of disc seat is greater than the diameter of through hole.

[0014] Further, the execution component includes the worm gear screw lifter fixed in the middle of the top of experiment table, the bracket mounted on worm gear screw lifter, the shaft support fixed on the top of bracket, the guide wheel rotatably mounted on the upper end of shaft support, the pressure sensor mounted in the inside of bracket, and the control panel mounted on one side of bracket.

[0015] Further, the execution component further includes the index fixed on one side of the lower end of bracket, and the scale fixed on the top of experiment table.

[0016] As described above, the utility model has at least one of the following beneficial technical effects:

[0017] (1) In the utility model, after the rope is fixed between the fixed components on both sides, the both ends of the rope are sleeved with the anti-drop component, and the sleeve is rotated and tightened to push the forced sleeve inward, the forced sleeve is extruded to tighten the forced head, and the rope is clamped after being tightened, so that the anti-drop component is fixed on the end of the rope; When the rope accidentally falls off during stretching, the end of the rope is limited from falling off from the fixed component by the anti-drop component, so that accidents are avoided, and the use safety is improved.

[0018] (2) In this utility model, the anti-detachment component is connected and fixed by a safety chain to prevent the anti-detachment component from detaching from the stand; the diameter of the plate base is larger than the diameter of the through hole, which can effectively prevent the anti-detachment component from passing through the through hole on the stand, further improving the safety of use. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the execution component in this utility model.

[0021] Figure 3 This is a schematic diagram of the fixing component in this utility model.

[0022] Figure 4 This is a schematic diagram of the anti-detachment component in this utility model.

[0023] In the diagram: 1. Experimental bench; 2. Demonstration mechanism; 21. Execution component; 21. Worm gear screw jack; 211. Bracket; 212. Shaft bracket; 213. Guide wheel; 214. Pressure sensor; 215. Control panel; 216. Indicator; 217. Scale; 218. Fixing component; 22. Stand; 221. Four-jaw chuck; 222. Through hole; 223. Reinforcing rib; 224. Safety chain; 225. Anti-detachment component; 23. Cylinder shell; 231. Pressing head; 232. Slot; 233. Pressing sleeve; 234. Plug sleeve; 235. Disc base; 236. Rope; 3. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0025] Implementation, for example Figures 1-4 As shown, a mechanical extension experiment demonstration device consists of an experimental platform 1, a demonstration mechanism 2, and a rope 3. The demonstration mechanism 2 is set on the experimental platform 1 to conduct an extension experiment on the rope 3. The demonstration mechanism 2 includes an execution component 21 set on the experimental platform 1 for applying tension to the rope 3; a fixing component 22 set on the experimental platform 1 for fixing both ends of the rope 3; and an anti-detachment component 23. The anti-detachment component 23 includes a cylindrical shell 231 set on the fixing component 22, a clamping head 232 placed inside the cylindrical shell 231, several circumferentially distributed slots 233 opened on the clamping head 232, a clamping sleeve 234 placed inside the cylindrical shell 231 and fitted onto the clamping head 232, and a plug sleeve 235 threadedly installed at the lower end of the cylindrical shell 231.

[0026] In this embodiment, when the rope 3 is fixed between the two fixed assemblies 22, the two ends of the rope 3 are sleeved with the anti-disengagement assembly 23, and the plug sleeve 235 is rotated and tightened to push the pressing sleeve 234 inward, the pressing sleeve 234 is extruded and pressed to tighten the rope 3, so as to fix the anti-disengagement assembly 23 at the end of the rope 3; so that when the rope 3 is accidentally disengaged during stretching, the anti-disengagement assembly 23 can limit the end of the rope 3 from disengaging from the fixed assembly 22, thereby avoiding accidents.

[0027] Specifically, the fixed assembly 22 includes a stand 221 fixed on both sides of the top of the experiment table 1, a four-jaw chuck 222 mounted on the inner wall of the upper end of the stand 221, a through hole 223 opened in the inner part of the upper end of the stand 221, and a reinforcing rib 224 fixed between the stand 221 and the common vertical plane of the experiment table 1.

[0028] In this embodiment, the end of the rope 3 can be fixed by passing through the through hole 223 and then through the four-jaw chuck 222.

[0029] Specifically, the fixed assembly 22 further includes a safety chain 225 fixed on the outer wall of the stand 221, and the other end of the safety chain 225 is fixed with the barrel shell 231.

[0030] In this embodiment, the anti-disengagement assembly 23 is connected and fixed by the safety chain 225 to prevent the anti-disengagement assembly 23 from disengaging from the stand 221.

[0031] Specifically, the anti-disengagement assembly 23 further includes a disc seat 236 fixed on the outer wall of the upper end of the barrel shell 231, and the diameter of the disc seat 236 is greater than the diameter of the through hole 223.

[0032] In this embodiment, the anti-disengagement assembly 23 cannot pass through the through hole 223 on the stand 221.

[0033] Specifically, the execution assembly 21 includes a worm screw lifter 211 fixed on the top of the experiment table 1, a bracket 212 mounted on the worm screw lifter 211, an axle bracket 213 fixed on the top of the bracket 212, a guide wheel 214 rotatably mounted on the upper end of the axle bracket 213, a pressure sensor 215 mounted in the inner part of the bracket 212, and a control panel 216 mounted on one side of the bracket 212.

[0034] In this embodiment, the guide wheel 214 on the axle bracket 213 at the top of the bracket 212 is driven by the worm screw lifter 211 to exert a pulling force on the rope 3 downward, and the pulling force is monitored by the control panel 216 in cooperation with the pressure sensor 215 during the process, and is converted into an electrical signal output.

[0035] Specifically, the execution assembly 21 further includes an index 217 fixed on one side of the lower end of the bracket 212, and a scale 218 fixed on the top of the experiment table 1.

[0036] In this embodiment, when the execution component 21 applies downward pulling force to the rope 3, the position of the indicator 217 on the bracket 212 pointing to the scale 218 is the corresponding value.

[0037] like Figures 1-4 As shown, the working principle of a mechanical extension experiment demonstration device is as follows: First, the end of the rope 3 is passed through the through hole 223 and then fixed by the four-jaw chuck 222. Then, anti-detachment components 23 are fitted on both ends of the rope 3, and the tightening sleeve 235 is rotated and pushed inward to push the clamping sleeve 234. The clamping sleeve 234 squeezes the clamping head 232 and tightens it, clamping the rope 3, thereby fixing the anti-detachment component 23 to the end of the rope 3. The guide wheel 214 on the top shaft frame 213 of the bracket 212 is driven by the worm gear screw jack 211 to apply downward tension to the rope 3. During the process, the tension is monitored by the control panel 216 in conjunction with the pressure sensor 215 and converted into an electrical signal output. The position of the indicator 217 pointing to the scale 218 is the corresponding value.

Claims

1. A mechanical extension experiment demonstration device, comprising an experimental platform (1) and a rope (3); characterized in that, The experimental platform (1) is equipped with a demonstration mechanism (2) for conducting extension experiments on the rope (3). The demonstration mechanism (2) includes: An execution component (21) is set on the experimental table (1) and used to apply tension to the rope (3); Fixing component (22) is set on the experimental table (1) and used to fix the two ends of the rope (3); The anti-detachment component (23) includes a cylindrical shell (231) disposed on the fixing component (22), a clamping head (232) placed inside the cylindrical shell (231), a plurality of slots (233) being formed on the circumference of the clamping head (232), a clamping sleeve (234) being provided inside the cylindrical shell (231), and the clamping sleeve (234) being fitted onto the clamping head (232), and a plug sleeve (235) being connected to the lower end of the cylindrical shell (231).

2. The mechanical extension experiment demonstration device according to claim 1, characterized in that: The fixing component (22) includes a stand (221) fixed on both sides of the top of the experimental table (1), a four-jaw chuck (222) installed on the inner wall of the upper end of the stand (221), a through hole (223) opened inside the upper end of the stand (221), and a reinforcing rib (224) fixed between the stand (221) and the common vertical plane of the experimental table (1).

3. The mechanical extension experiment demonstration device according to claim 2, characterized in that: The fixing component (22) also includes a safety chain (225) fixed to the outer wall of the support frame (221), with one end of the safety chain (225) fixed to the cylindrical shell (231).

4. The mechanical extension experiment demonstration device according to claim 1, characterized in that: The anti-detachment component (23) also includes a disc base (236) fixed to the upper outer wall of the cylinder shell (231), and the diameter of the disc base (236) is larger than the diameter of the through hole (223).

5. The mechanical extension experiment demonstration device according to claim 4, characterized in that: The execution component (21) includes a worm gear screw jack (211) fixed in the middle of the top of the experimental platform (1), a bracket (212) mounted on the worm gear screw jack (211), a shaft frame (213) fixed on the top of the bracket (212), a guide wheel (214) rotatably mounted on the upper end of the shaft frame (213), a pressure sensor (215) installed inside the bracket (212), and a control panel (216) installed on one side of the bracket (212).

6. The mechanical extension experiment demonstration device according to claim 5, characterized in that: The execution component (21) also includes an index (217) fixed to one side of the lower end of the bracket (212) and a scale (218) fixed to the top of the experimental table (1).

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