CN209565201U - A kind of air excitation experimental rig - Google Patents

Abstract

The utility model relates to a kind of air to motivate experimental rig, comprising: cylinder and the piston with cylinder cooperation；Cylinder is equipped with upper gas outlet, lower gas outlet and air inlet；There are mutually isolated upper chamber and lower chambers on piston；When piston is located at cylinder bottom, lower chambers are connected to lower gas outlet, and upper chamber is connected to air inlet；When piston is located at cylinder head, lower chambers are connected to air inlet, and upper chamber is connected to upper gas outlet；Top in cylinder has by spring-supported vibration damper plate.Air in pipe provided by the utility model motivates experimental rig, is made a service test test using novel air excitation experimental rig, can be with vibration with survey, and easy for assemble or unload, moment starting stops, experiment process simplicity；Using pressure-air as power source, foundation cost is low, environmental protection more more energy efficient than conventional apparatus；Device volume is small, and failure is few, and maintenance is simple, and excitation is stablized.

Description

A kind of air excitation experimental rig

Technical field

The utility model relates to a kind of air to motivate experimental rig, belong to performance test technical field.

Background technique

Existing electrodynamic type exciting bank, electromagnetic type exciting bank, electric-liquid type exciting bank, fluid pressure type exciting bank conduct Driver unit form vibrating machine, to realize object conveying, it is closely knit, molding etc. work, also be used as examination and test of products machinery quilt It is widely used in the experimental test relevant to power performance such as electronics, medical treatment, communication field.But above a few class exciting banks exist Following disadvantage: (1) commonly using exciting bank structural shape complexity, and manufacturing cost is high；(2) exciter response speed is slow；It (3) cannot be direct Reflect and accurately obtain driving frequency and excitation energy magnitude；(4) consumptive material is serious, is not conducive to environmental protection and sustainable development.

Summary of the invention

The utility model will solve the disadvantage that technical problem is: overcoming the prior art, provide a kind of convenient, efficient progressive It can experimental test, the accurate air excitation experimental rig for determining driving frequency and excitation energy size.

In order to solve the above-mentioned technical problem, the utility model proposes technical solution be: a kind of air motivates experimental rig, It include: cylinder and the piston with cylinder cooperation；The cylinder is equipped with upper gas outlet, lower gas outlet and air inlet；It is described There are mutually isolated upper chamber and lower chambers on piston；When the piston is located at the cylinder bottom, the lower chambers with The lower gas outlet connection, the upper chamber are connected to the air inlet；It is described when the piston is located at the cylinder head Lower chambers are connected to the air inlet, and the upper chamber is connected to the upper gas outlet；Top in the cylinder has by bullet The vibration damper plate of spring support.

Above scheme is disposed with excitation further improvement is that the cylinder bottom is equipped with pedestal in the pedestal Frequency collection chip and excitation energy obtain chip；The driving frequency acquisition chip has driving frequency output port；It is described Excitation energy, which obtains chip, has excitation energy output port.

For above scheme further improvement is that having mounting hole on the pedestal, the pedestal can be by passing through institute The bolt for stating mounting hole is connect with test specimen.

Air in pipe provided by the utility model motivates experimental rig, motivates experimental rig progressive using novel air Energy experimental test, can be with vibration with survey, and easy for assemble or unload, moment starting stops, and experiment process is easy；Using pressure-air conduct Power source, foundation cost is low, environmental protection more more energy efficient than conventional apparatus；Device volume is small, and failure is few, and maintenance is simple, and excitation is stablized；It adopts Chip is obtained with driving frequency acquisition chip, excitation energy, driving frequency and excitation energy can be accurately obtained, survey is effectively ensured Try precision；It is able to solve the excitation that traditional electrodynamic type exciting bank, electromagnetic type exciting bank, electric-liquid type exciting bank are difficult to realize Frequency excitation amplitude.

Detailed description of the invention

The utility model is described in further detail with reference to the accompanying drawing.

Fig. 1 is one preferred embodiment structural schematic diagram of the utility model.

Fig. 2 is that piston is located at cylinder bottom status architecture schematic diagram in Fig. 1.

Fig. 3 is that piston is located at cylinder head status architecture schematic diagram in Fig. 1.

Fig. 4 is working state schematic representation.

Specific embodiment

Embodiment

The air of the present embodiment motivates experimental rig, such as Fig. 1, comprising: cylinder 2 and the piston 1 cooperated with cylinder 2；Cylinder 2 It is equipped with upper gas outlet 6, lower gas outlet 7 and air inlet 5；There are mutually isolated upper chamber 9 and lower chambers 10 on piston 1；When When piston 1 is located at 2 bottom of cylinder, lower chambers 10 are connected to lower gas outlet 7, and upper chamber 9 is connected to air inlet 5；When piston 1 is located at When 2 top of cylinder, lower chambers 10 are connected to air inlet 5, and upper chamber 9 is connected to upper gas outlet 6；Top in cylinder 2 have by The vibration damper plate 4 that spring 3 supports.

Such as Fig. 4,2 bottom of cylinder is equipped with pedestal 15, driving frequency acquisition chip 11 and excitation energy is disposed in pedestal 15 Amount obtains chip 13；Driving frequency acquisition chip 11 has driving frequency output port 12；Excitation energy obtains chip with sharp Encourage energy output port 14.It is corresponded in this way, the acquisition of chip 13 can be obtained by driving frequency acquisition chip 11 and excitation energy Information, external equipment can be by connecting its output port, to accurately obtain driving frequency and excitation energy.Have on pedestal 26 There are mounting hole 16a, 16b, pedestal 15 can be connected by bolt 18a, the 18b and test specimen 17 for passing through mounting hole.

For the ease of showing, Fig. 1 to Fig. 4 is horizontal, and the left side in figure is lower section, and right side is top.

Such as Fig. 2, piston 1 is located at the intracavitary lower part of cylinder 2 because of Gravitative Loads initial position；Piston 1 can be in cylinder 2 Smooth sliding above and below chamber, air inlet 5 are communicated with high pressure gas, at this point, high pressure gas enters the epicoele of piston 1 by air inlet 5 In room 9, air pressure increases in the upper chamber 9 of piston 1, and air pressure is constant in the lower chambers 10 of piston 1, and then forms pressure difference, pushes away 1 uplink of cylindrical piston is moved, gas is squeezed through the discharge of venthole 6, the lower cavity of piston 1 in the upper plenum 8a of cylinder 2 Tonifying Qi is carried out by lower production well 7 in 8b.

When piston 1, which is gone upward to, touches vibration damper plate 4, uplink impetus compressed spring 3 of the vibration damper plate 4 by piston 1 Play cushioning effect；When 1 uplink of piston to terminal when, spring 3 is compressed to utmostly, and elasticity of saving potential energy reaches maximum.

Such as Fig. 3, when 1 uplink of piston to terminal when, the upper chamber 9 of piston 1 is communicated with the atmosphere by upper venthole 6, release Internal high-pressure gas, meanwhile, the connection with air inlet 5 has also been cut off, has been restored to atmospheric pressure；Piston 1 is due to by elasticity of saving The repulsion that potential energy reaches the vibration damper plate 4 of maximum value starts downlink, meanwhile, high pressure gas enters piston 1 by air inlet 5 In lower chambers 10, air pressure increases in the lower chambers 10 of piston 1, and then forms pressure difference, and piston 1 is pushed to accelerate downlink, cylinder 2 Gas is squeezed through the exclusion of lower production well 7 in lower inner cavity 8b, passes through the progress tonifying Qi of upper venthole 6 in the upper inner cavity 8a of cylinder 2. When 1 downlink of cylindrical piston to terminal when, pedestal 15 is motivated, the driving frequency acquisition chip 11 being set in pedestal 15 Chip 13 is obtained with excitation energy and receives pumping signal, is looped back and forth like this；To carry out Persistent Excitation, performance test is being ensured just Often carry out.

With reference to Fig. 4, pedestal 15 is passed through by the high-strength bolt being embedded in measured object 17 in advance and is pre-set on pedestal 15 Experimental rig mounting hole 16a, 16b is attached, and is firmly fixed together with the matching used nut of high-strength bolt, lead to It crosses Persistent Excitation pedestal 15 and is transmitted to measured object 17, achieve the effect that Persistent Excitation.

The utility model is not limited to the above embodiment the specific technical solution, and in addition to the implementation, this is practical It is novel to have other embodiments.All technical solutions formed using equivalent replacement, are the guarantor of the requires of the utility model Protect range.

Claims (3)

1. a kind of air motivates experimental rig characterized by comprising cylinder and the piston with cylinder cooperation；The gas Cylinder is equipped with upper gas outlet, lower gas outlet and air inlet；There are mutually isolated upper chamber and lower chambers on the piston；Work as institute When stating piston and being located at the cylinder bottom, the lower chambers are connected to the lower gas outlet, the upper chamber and the air inlet Connection；When the piston is located at the cylinder head, the lower chambers are connected to the air inlet, the upper chamber with it is described Upper gas outlet connection；Top in the cylinder has by spring-supported vibration damper plate.

2. air according to claim 1 motivates experimental rig, it is characterised in that: the cylinder bottom is equipped with pedestal, It is disposed with driving frequency acquisition chip in the pedestal and excitation energy obtains chip；The driving frequency acquisition chip, which has, to swash Encourage rate-adaptive pacemaker port；The excitation energy, which obtains chip, has excitation energy output port.

3. air according to claim 2 motivates experimental rig, it is characterised in that: have mounting hole, institute on the pedestal Stating pedestal can be connect by passing through the bolt of the mounting hole with test specimen.