CN203910102U - Impact experiment apparatus in dynamics - Google Patents

Impact experiment apparatus in dynamics Download PDF

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Publication number
CN203910102U
CN203910102U CN201420292999.7U CN201420292999U CN203910102U CN 203910102 U CN203910102 U CN 203910102U CN 201420292999 U CN201420292999 U CN 201420292999U CN 203910102 U CN203910102 U CN 203910102U
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CN
China
Prior art keywords
spring
mobile piston
dolly
cylindrical shell
plunger rod
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Expired - Fee Related
Application number
CN201420292999.7U
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Chinese (zh)
Inventor
钟晓勤
苗学源
瞿志豪
卫飞行
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Shanghai Institute of Technology
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Shanghai Institute of Technology
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Priority to CN201420292999.7U priority Critical patent/CN203910102U/en
Application granted granted Critical
Publication of CN203910102U publication Critical patent/CN203910102U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to an impact experiment apparatus in dynamics. An impacted spring and a pressure bearing plate are fixedly connected to a vertical plate at a lower end of a slope track seat. A laser sensor is disposed at the back of the vertical plate. A laser beam of the laser sensor penetrates through a through hole in the vertical plate at the lower end of the slope track seat, and strikes the center of the pressure bearing plate. A car is disposed at an upper end of the slope track seat. A cylinder is disposed in the car. A front baffle plate and a rear end cap are fixedly connected with a front end and a rear end of the car respectively in a sealed manner. The car is fully filled with a liquid flow medium. The front baffle plate is fixedly connected with an outer end face of the cylinder in a sealed manner. A plunger rod and a mobile piston are disposed in the cylinder. A mobile piston inner hole is in matching connection with the plunger head. The mobile piston divides the cylinder into a front cavity and a rear cavity. A discharge hole is disposed in a tail cover positioned at a rear end of the rear cavity. A front end of the plunger rod and a through hole of the front baffle plate are in matching sealed connection. A main spring is disposed on a step cylindrical surface of the plunger rod and a step cylindrical surface of the mobile piston. A restoring spring is installed on a rear-end step of the mobile piston and a rear end face of the tail cover. The tail cover is fixedly connected with the cylinder in a sealed manner.

Description

Dynamics collision experiment device
Technical field
The utility model relates to a kind of dynamics collision experiment device, especially a kind of comprehensive experimental device of the Experiments of Machanics teaching field for theoretical mechanics, engineering mechanics etc.
Background technology
Mechanics is an ancient subject, and its generation and evolution are exactly the deepening process of the mankind for object mechanical motion understanding, and the logic by self further develops under the promotion of engineering.In solid mechanics branch, theoretical mechanics is the science of research object mechanical motion universal law, is exactly the relation between research power and mechanical motion change specifically, is the subject basis of mechanics, is conventionally divided into statics, kinematics, dynamics three parts.The mechanics course learning methods such as conventional theoretical mechanics are to pay close attention to theory teaching study, and shortage Experimental Teaching Tache, especially lack the dynamic synthesis experimental provision of relation between reflection muscle power and motion change, thereby student lacks the practice of starting, this does not meet the applied technician's of modern project fostering requirement yet.The utility model designs in order to strengthen the perceptual knowledge of student to knowwhy, the understanding to knowwhy and raising student's the ability of practice just.
Summary of the invention
The utility model is that a kind of dynamics collision experiment device for Experiments of Machanics teaching will be provided, and device can comprehensively embody concept and the ultimate principles such as momentum in dynamics, momentum, theorem of kinetic energy by experiment.Experimental provision is installed on the test platform in laboratory, has the advantages such as comprehensive strong, intuitive and reliable, data acquisition is convenient.
The purpose of this utility model is achieved in that a kind of dynamics collision experiment device, comprises laser sensor, rushed spring, bearing plate, inclined-plane railroad shoe, plunger rod, front apron, coupling bolt nut, main spring, dolly, cylindrical shell, mobile piston, recover spring, tail-hood, be characterized in: on the vertical panel of railroad shoe lower end, inclined-plane, be fixedly connected with and rushed spring and bearing plate, the laser sensor for measuring the compress variation that is rushed spring is housed, inclined-plane railroad shoe upper ends dolly after vertical panel, dolly is built-in with cylindrical shell, before dolly, rear end be sealedly and fixedly connected respectively front apron and rear end cap, fill liquid flow medium in dolly, front apron and cylindrical shell outer face are sealedly and fixedly connected, and plunger rod is housed in cylindrical shell, mobile piston, mobile piston endoporus and plunger rod are connected, cylindrical shell is divided into front cavity and rear chamber by mobile piston, be positioned on the tail-hood of rear chamber rear end with discharge orifice, plunger rod front end is connected with the through hole fitted seal of front apron, main spring is arranged on the step face of cylinder of plunger rod and the step face of cylinder of mobile piston, recover spring fitting on the step of mobile piston rear end with tail-hood rear end face on, between tail-hood and cylindrical shell, be sealedly and fixedly connected.
When dynamics collision experiment, discharge dolly from inclined-plane railroad shoe eminence, dolly and bearing plate and rushed spring and form and collide, laser sensor is connected with PC by data collecting instrument, for by the compress variation data transmission of being rushed spring to PC.
By integrally welded by cover embedded between impact spring, bearing plate, inclined-plane railroad shoe.Between tail-hood and dolly tank floor inwall, install one for ensureing the wedge adjustment block of plunger rod installation accuracy.The length of mobile piston is greater than 1/3rd of barrel diameter.Cylindrical shell on barrel along key shape groove is set on axis direction.
The beneficial effects of the utility model are:
The utility model is a kind of pure mechanical structure device, is made up of the simple parts such as plunger rod, spring, cylindrical shell, guide rail, is used for reflecting the mechanical motion universal law of object, is skillfully constructed, and is rich in novelty.Cavity is divided into former and later two parts by piston in experimental provision design, and front cavity and rear chamber are placed respectively main spring and recovered spring, ensure carrying out in order of experiment.Experimental provision compact conformation, on an experimental assembly, complete the embodiment of multiple mechanical concept and theorem, comprehensive strong, cost is low, and Mechanical Structure Strength is high, install easy to adjust, mechanical motion is reliable, and data acquisition modes use modernization means, can strengthen the perceptual knowledge of student to mechanics ultimate principle, be conducive to the raising of students practise ability, also enriched the content of courses and the means of the mechanics course such as theoretical mechanics.By dynamics collision experiment process, can make student from correct understanding momentum mv, momentum Ft, kinetic energy intuitively mv 2, potential energy mgh, deformation energy p dthe mechanical concept such as δ, energy conversion relation and theorem of kinetic energy and principle and engineering application thereof.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is buffer unit structure cut-open view of the present utility model;
Fig. 3 is plunger rod structural representation of the present utility model;
Fig. 4 is mobile piston structural representation of the present utility model;
Fig. 5 is the tube structure schematic diagram of utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As Figure 1-Figure 5, dynamics collision experiment device of the present utility model, comprises that laser sensor 1, quilt are rushed spring 2, bearing plate 3, inclined-plane railroad shoe 4, plunger rod 5, front apron 6, coupling bolt nut 7, main spring 8, drain screw 9, dolly 10, cylindrical shell 11, mobile piston 12, recover spring 13, earial drainage tail-hood 14, wedge adjustment block 15.
On the vertical panel of inclined-plane railroad shoe 4 lower ends, be fixedly connected with and rushed spring 2 and bearing plate 3, laser sensor 1 is housed after vertical panel, inclined-plane railroad shoe 4 upper ends dollies 10, dolly 10 is built-in with cylindrical shell 11, before dolly 10, rear end be sealedly and fixedly connected respectively front apron 6 and rear end cap, in dolly 10, fill liquid flow medium, front apron 6 is sealedly and fixedly connected with cylindrical shell 11 outer faces, plunger rod 5 is housed in cylindrical shell 11, mobile piston 12, mobile piston 12 endoporus and plunger rod 5 are connected, cylindrical shell 11 is divided into front cavity and rear chamber by mobile piston 12, be positioned on the tail-hood 14 of rear chamber rear end with discharge orifice, plunger rod 5 front ends are connected with the through hole fitted seal of front apron 6, main spring 8 is arranged on the step face of cylinder of plunger rod 5 and the step face of cylinder of mobile piston 12, recover spring 13 be arranged on mobile piston 12 rear end steps with tail-hood 14 rear end faces on, between tail-hood 14 and cylindrical shell 11, be sealedly and fixedly connected.The length of mobile piston 12 is greater than 1/3rd of cylindrical shell 11 diameters.Cylindrical shell 11 on barrel along key shape groove is set on axis direction.
The laser beam of laser sensor 1, through the through hole on inclined-plane railroad shoe 4 vertical panels, penetrate at the center of bearing plate 3, and direction is vertical with bearing plate 3, for measuring the compress variation that is rushed spring 2; Position relationship between the installation site of laser sensor 1 and collision experiment device is separate; Laser sensor 1 is connected and transfers data in PC with data collecting instrument by connecting line, carries out data acquisition system (DAS).Rushed spring 2 and inclined-plane railroad shoe 4 and bearing plate 3, adopted cover embedded welded structure, be combined into one; Inclined-plane railroad shoe 4 upper ends dollies 10, front apron 6 is bolted with the front end face of dolly, between adopt rubber sheet gasket sealing, on the through hole of plunger rod 5 in front apron 6, axle O-ring seal is housed on through hole, between cylindrical shell 11 outer faces and front apron 6 end faces, there is gasket seal, use bolt and nut 7 to connect; Main spring 8 is arranged on the step face of cylinder of plunger rod 5 and the step face of cylinder of mobile piston 12, recover spring 13 be arranged on mobile piston 12 rear end steps with earial drainage tail-hood 14 rear end faces on, between earial drainage tail-hood 14 and cylindrical shell 11, place gasket seal, and be bolted, between earial drainage tail-hood 14 and dolly 10 tank floor inwalls, a wedge adjustment block 15 is installed, ensures the installation accuracy of plunger rod 5.
Test carriage 10 is placed in inclined-plane railroad shoe 4 upper ends, and what a large rigidity was installed in the plane vertical with inclined-plane railroad shoe 4 lower ends is rushed spring 2, by dolly 10 from inclined-plane railroad shoe 4 upper ends discharge, impact and rushed spring 2.The parts that dynamics collision experiment device dolly 10 inner punch bar 10 axles are fastened adopt double-spring structure, cylindrical shell 11 is moved piston 12 and is divided into two parts, front cavity and rear chamber, rear chamber is a not exclusively cavity for sealing, on tail-hood 14 with discharge orifice, being rushed spring 2 when the drift touching of plunger rod 5 is collided while impacting, after snubber assembly, it is the incomplete closed cavity that an inside is full of liquid flow medium (water), plunger rod 5 meeting retrudes, main spring 8 can promote mobile piston 12 water in cavity is discharged from the discharge orifice of the tail-hood 14 with porose, the anchor ring that is less than mobile piston 12 due to discharge orifice area is long-pending, fluid produces damping effect, extend the action time of impact force.Rushed the compress variation of spring 2 and measured by laser sensor 1, by data collecting instrument by surveyed data transmission to record in PC.After experiment finishes, open waterproof plug screw 9 and screw on again after anti-lost liquid flow medium.

Claims (6)

1. a dynamics collision experiment device, comprise laser sensor (1), rushed spring (2), bearing plate (3), inclined-plane railroad shoe (4), plunger rod (5), front apron (6), coupling bolt nut (7), main spring (8), dolly (10), cylindrical shell (11), mobile piston (12), recover spring (13), tail-hood (14), it is characterized in that: on the vertical panel of described inclined-plane railroad shoe (4) lower end, be fixedly connected with and rushed spring (2) and bearing plate (3), the laser sensor (1) that is rushed spring (2) compress variation for measuring is housed after vertical panel, inclined-plane railroad shoe (4) upper ends dolly (10), dolly (10) is built-in with cylindrical shell (11), dolly (10) is front, rear end be sealedly and fixedly connected respectively front apron (6) and rear end cap, dolly is filled liquid flow medium in (10), front apron (6) is sealedly and fixedly connected with cylindrical shell (11) outer face, plunger rod (5) is housed in cylindrical shell (11), mobile piston (12), mobile piston (12) endoporus and plunger rod (5) are connected, cylindrical shell (11) is divided into front cavity and rear chamber by mobile piston (12), the tail-hood (14) that is positioned at rear chamber rear end is upper with discharge orifice, plunger rod (5) front end is connected with the through hole fitted seal of front apron (6), main spring (8) is arranged on the step face of cylinder of plunger rod (5) and the step face of cylinder of mobile piston (12), recovering spring (13) is arranged on mobile piston (12) rear end step and tail-hood (14) rear end face, between tail-hood (14) and cylindrical shell (11), be sealedly and fixedly connected.
2. dynamics collision experiment device according to claim 1, it is characterized in that: when dynamics collision experiment, from inclined-plane railroad shoe (4) eminence discharges dolly (10), dolly (10) is with bearing plate (3) and rushed spring (2) contact-impact, laser sensor (1) connects PC by data collecting instrument, for the compress variation data transmission that will be rushed spring (2) to PC.
3. dynamics collision experiment device according to claim 1, is characterized in that: described by integrally welded by cover embedded between impact spring (2), bearing plate (3) and inclined-plane railroad shoe (4).
4. dynamics collision experiment device according to claim 1, is characterized in that: between described tail-hood (14) and dolly (10) tank floor inwall, install one for ensureing the wedge adjustment block (15) of plunger rod (5) installation accuracy.
5. dynamics collision experiment device according to claim 1, is characterized in that: the length of described mobile piston (12) is greater than 1/3rd of cylindrical shell (11) diameter.
6. dynamics collision experiment device according to claim 1, is characterized in that: described cylindrical shell (11) on barrel along key shape groove is set on axis direction.
CN201420292999.7U 2014-06-05 2014-06-05 Impact experiment apparatus in dynamics Expired - Fee Related CN203910102U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201420292999.7U CN203910102U (en) 2014-06-05 2014-06-05 Impact experiment apparatus in dynamics

Publications (1)

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CN203910102U true CN203910102U (en) 2014-10-29

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104036674A (en) * 2014-06-05 2014-09-10 上海应用技术学院 Dynamic collision experiment device
CN104376883A (en) * 2014-11-18 2015-02-25 中国核动力研究设计院 Test device for reactor fuel assembly positioning frillwork dynamic rigidity
CN110047369A (en) * 2019-04-23 2019-07-23 合肥职业技术学院 Teaching bench is used in a kind of displaying of track brake structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104036674A (en) * 2014-06-05 2014-09-10 上海应用技术学院 Dynamic collision experiment device
CN104036674B (en) * 2014-06-05 2016-09-14 上海应用技术学院 Kinetic collision experimental provision
CN104376883A (en) * 2014-11-18 2015-02-25 中国核动力研究设计院 Test device for reactor fuel assembly positioning frillwork dynamic rigidity
CN110047369A (en) * 2019-04-23 2019-07-23 合肥职业技术学院 Teaching bench is used in a kind of displaying of track brake structure

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141029

Termination date: 20160605