CN205664964U

CN205664964U - Threaded connection elasticity state detection device has

Info

Publication number: CN205664964U
Application number: CN201620574419.2U
Authority: CN
Inventors: 丁更新
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2016-06-08
Filing date: 2016-06-08
Publication date: 2016-10-26
Anticipated expiration: 2026-06-08

Abstract

The utility model relates to a threaded connection elasticity state detection device has, including bolt, nut, gasket and detection circuitry, after the bolt passes and treats the connector, through nut fixed joint, the gasket set up in the head of bolt and treating between the connector perhaps the gasket set up in treat the connector with between the nut, detection circuitry with the gasket electricity is connected. This application is through setting up the gasket into the foil gage to to visit foil gage and detection circuitry electricity and be connected, when the bolt pine appearing and take off, the pressurized of foil gage changes, at this moment, the foil gage hinder the increase, just can detect the situation of change of voltage through the comparator among the detection circuitry, detection circuitry exports the voltage variation condition of foil gage for control system.

Description

One has threaded degree of tightness condition checkout gear

Technical field

This utility model belongs to connection detection technique field, particularly relates to one and has threaded degree of tightness state-detection dress Put.

Background technology

Threaded have become as connected mode most commonly used in mechanical connection, be illustrated in figure 1 most typical screw thread Connection scheme, the program is bolts and nuts connection type, main by bolts and nuts be connected to the first connected body 01 and Second connected body 02, by tighting a bolt 03 and nut 04 so that the adhesion between bolt 03 and nut 04 increases, thus Realize the connection of bolts and nuts.

Under existing technical scheme state, the connection of bolt and nut is typically by running through the first connected body 01 and Two connected bodies 02 tie spacer come 05 and run through connection, but this scheme cannot realize being diagnosed to be this bolt connects pine De-problem.

Connection between the upper and lower covers of some important events, such as electric automobile, is necessary for there is strict connection, as When fruit connection has the state got loose, battery is wrapped and will be formed sealing problem between lower cover.

Utility model content

The purpose of this utility model is to provide one and has threaded degree of tightness condition checkout gear, threaded to solve Time connection get loose problem.

This utility model is achieved through the following technical solutions:

One has threaded degree of tightness condition checkout gear, including bolt, nut, pad and testing circuit；

After described bolt passes body to be connected, connect by described nut is fixing；Described pad is arranged at described bolt Between head and body to be connected or described pad is arranged between described body to be connected and described nut；

Described testing circuit electrically connects with described pad.

Described pad is foil gauge.

Described testing circuit at least includes comparator.

Described pad electrically connects with the positive input of described comparator；Described pad passes through divider resistance and pull down resistor Reverse input end with described comparator electrically connects afterwards.

The beneficial effects of the utility model are:

The application by being set to foil gauge by pad, and electrically connect, visit foil gauge when bolt occur with testing circuit When getting loose, the pressurized of foil gauge changes, and now, the resistance of foil gauge increases, and just can by the comparator in testing circuit The situation of change of voltage being detected, the change in voltage situation of foil gauge is exported to control system by testing circuit.

Accompanying drawing explanation

Fig. 1 is prior art bolts and nuts connection diagram；

Fig. 2 is this utility model bolts and nuts connection diagram；

Fig. 3 is this utility model threaded degree of tightness condition checkout gear schematic diagram.

Description of reference numerals

01 first connected body, 02 second connected body, 03 bolt, 04 nut, 05 pad, 1 bolt, 2 nuts, 3 pads, 4 bodies to be connected, 5 testing circuits, 51 comparators, 52 divider resistances, 53 pull down resistors.

Detailed description of the invention

Describing the technical solution of the utility model by the following examples in detail, below example is only exemplary , it is only capable of for explaining and illustrate the technical solution of the utility model, and is not to be construed as technical solutions of the utility model Restriction.

This utility model provides one to have threaded degree of tightness condition checkout gear, as shown in Figures 2 and 3, including spiral shell Bolt 1, nut 2, pad 3 and testing circuit 5.

In this utility model, the connected mode of bolts and nuts is prior art, by body to be connected by bolt and nut Fixing connection be also prior art, and this attachment structure is the common linking techniques of mechanical field, and therefore, applicant is not This connection is described in detail.In the present embodiment, body to be connected is battery bag and car body.

After described bolt 1 passes body 4 to be connected, connect by described nut 2 is fixing；Described pad 3 is arranged at described spiral shell Between head and the body to be connected 4 of bolt 1 or described pad 3 is arranged between described body to be connected 4 and described nut 2.

Key technology scheme in the application is that the pad of prior art is improved to foil gauge, and foil gauge is by specific Slab organization prepared by material, the feature of this foil gauge be foil gauge resistance can along with surface pressure increase, its resistance by The least, when the pressure on surface reduces, its resistance can be gradually increased.The technical scheme of the application is i.e. this that utilize foil gauge The tightness degree state that kind characteristic does bolts and nuts threaded detects and feeds back.

Described testing circuit 5 electrically connects with described pad 3.In this application, described testing circuit 5 at least includes comparator 51。

Described pad 3 electrically connects with the positive input of described comparator 51；Described pad 3 by divider resistance 52 and under After pull-up resistor 53, the reverse input end with described comparator 51 electrically connects.

As it is shown on figure 3, foil gauge is arranged between body to be connected and nut, battery bag needs 1-n bolts and nuts fastening, Required pad is 1-n the most accordingly, and in the present embodiment, 1-n pad uses series system to be connected to testing circuit In, the comprehensive impedance so formed is bigger.Pad side after series connection is directly connected with the positive input of comparator, to obtain One bigger value, the reverse input end of comparator introduces a reference standard, and this reference standard is by being connected to Divider resistance between comparator and pad and pull down resistor realize.The two ends of divider resistance attachment spacers and comparator respectively Reverse input end；The two ends of described pull down resistor ground connection and the reverse input end of comparator respectively.

The technical scheme of the application improves and can be tested with whether bolted occasion has the state of getting loose, this In just can well realize diagnostic function.

The above is only the description of preferred implementation of utility model, it is noted that limited due to literal expression Property, and objectively there is unlimited concrete structure, for those skilled in the art, without departing from this reality On the premise of new principle, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as this utility model Protection domain.

Claims

1. one kind has threaded degree of tightness condition checkout gear, it is characterised in that: include bolt, nut, pad and detection electricity Road；

After described bolt passes body to be connected, connect by described nut is fixing；Described pad is arranged at the head of described bolt And between body to be connected or described pad is arranged between described body to be connected and described nut；

Described testing circuit electrically connects with described pad.

The most according to claim 1 have threaded degree of tightness condition checkout gear, it is characterised in that: described pad is for answering Become sheet.

The most according to claim 1 have threaded degree of tightness condition checkout gear, it is characterised in that: described testing circuit At least include comparator.

The most according to claim 3 have threaded degree of tightness condition checkout gear, it is characterised in that: described pad and institute State the positive input electrical connection of comparator；Described pad is by reverse with described comparator after divider resistance and pull down resistor Input electrically connects.