CN218646443U

CN218646443U - Piezoelectric vibration sensor

Info

Publication number: CN218646443U
Application number: CN202222827680.7U
Authority: CN
Inventors: 曹军华
Original assignee: JIANGYIN HUAHENG INSTRUMENT CO LTD
Current assignee: JIANGYIN HUAHENG INSTRUMENT CO LTD
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-03-17
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a piezoelectric type vibration sensor, including the sensor body, dismantle the mount pad of being connected mutually with the sensor body, fixed knot structure rather than fixed has on the mount pad, the bottom of sensor body has connecting bolt, supply connecting bolt male mounting hole on the mount pad, the penetration hole has been seted up on the connecting bolt slope, set up the locating hole that communicates with the mounting hole on the mount pad, the inclination of locating hole is unanimous with the inclination of penetration hole, fix a position mutually through inserting the locating hole and the locating pin that pierces through in between connecting bolt and the mounting hole, be provided with limit structure between locating pin and the mount pad.

Description

Piezoelectric vibration sensor

Technical Field

The utility model relates to a piezoelectric type vibration sensor.

Background

Accidents caused by mechanical vibration problems are increasingly prominent in large-scale rotating machines such as fans, turbines, water turbines, compressors, water pumps, motors and the like. Vibration measurement has become an important link in rotating machines.

The vibration sensor is divided into five types, namely a magnetoelectric type, an eddy current type, a piezoelectric type, a capacitance type, an inductance type and the like according to the working principle, wherein the piezoelectric type vibration sensor can be suitable for some vibration test systems which are greatly influenced by the mass due to small volume and light weight, as shown in figure 1, and in addition, the vibration sensor is usually fixed through a connecting bolt at the bottom of the vibration sensor during installation, so that the installation is convenient.

Due to the fact that the field environment is complex, the sensor is easy to age and corrode after being fixed through the connecting bolt, the sensor is very easy to disassemble and assemble in the subsequent maintenance process and inconvenient, and the rusted connecting bolt is very easy to cause unstable installation of the sensor after being installed again, so that detection can be affected.

Therefore, technical personnel in the field need to modify the existing sensor urgently, and the detection precision of the sensor is ensured while the sensor is convenient to disassemble and assemble.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide a piezoelectric type vibration sensor, easy dismounting guarantees simultaneously that the follow-up maintenance of being convenient for detects the precision.

In order to realize the technical effects, the utility model adopts the technical scheme that: piezoelectric type vibration sensor, including the sensor body, with the mount pad of connecting is dismantled mutually to the sensor body, fixed knot who fixes it has on the mount pad constructs, the bottom of sensor body has connecting bolt, the confession has on the mount pad connecting bolt male mounting hole, the through hole has been seted up on the connecting bolt slope, set up on the mount pad with the locating hole that the mounting hole communicates, the inclination of locating hole with the inclination of through hole is unanimous, connecting bolt with through inserting between the mounting hole the locating hole and the locating pin in the through hole is fixed a position mutually, the locating pin with be provided with limit structure between the mount pad.

The improved structure is characterized in that the mounting seat is further provided with an inclined plane, the mounting hole is formed in the inclined plane, the inclined plane is perpendicular to the axis of the penetrating hole, and the head of the positioning pin is abutted to the inclined plane.

The improved structure is characterized in that the limiting structure comprises a fixing ring fixedly arranged at the head of the positioning pin, a flexible part with one end fixedly connected with the mounting seat, and a positioning ring fixedly arranged at the other end of the flexible part and provided with a notch, wherein the length of the flexible part is smaller than that of the positioning pin.

In a further improvement, the flexible member is a metal chain.

In a further improvement, the fixing structure is a fixing bolt fixedly arranged at the bottom of the mounting seat.

The improved structure is characterized in that the fixing structure is a connecting plate fixedly arranged on at least one side of the mounting seat, and the connecting plate is provided with a connecting hole.

The improved structure is characterized in that the fixing structure comprises a first clamping piece and a second clamping piece, one end of the first clamping piece is rotatably connected with the mounting seat, the other ends of the first clamping piece and the second clamping piece are respectively provided with a connecting part, and the connecting parts are fixedly connected through a fastening piece.

The utility model has the advantages and the beneficial effects that: set up the penetrating hole on the connecting bolt of original sensor, other structures do not change, have increased a mount pad simultaneously, are connected the locating pin through the slope between sensor and the mount pad, and the mount pad is fixed on the equipment that awaits measuring, when follow-up needs maintain the maintenance, need not to dismantle the mount pad, only need with the sensor follow the mount pad dismantle can, easy dismounting simultaneously, guarantee that sensor stability when detecting is good, guaranteed the detection precision.

Drawings

FIG. 1 is a prior art schematic;

FIG. 2 is a schematic view of a sensor body;

FIG. 3 is a schematic diagram of the present invention (embodiment one);

FIG. 4 is a schematic view of the present invention (example II);

fig. 5 is a schematic view of the present invention (example three).

Wherein: 1. a sensor body; 2. a connecting bolt; 3. a mounting seat; 4. mounting holes; 5. positioning holes; 6. a through hole; 7. positioning pins; 8. a fixing ring; 9. a positioning ring; 10. a flexible member; 11. fixing the bolt; 12. a connecting plate; 13. a first clip piece; 14. a second clip; 15. a fastener.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The first embodiment is as follows:

as shown in fig. 2 and 3, a piezoelectric vibration sensor includes a sensor body 1 and a mounting base 3 detachably connected to the sensor body 1, the mounting base 3 has a fixing structure for fixing the mounting base 3, the bottom of the sensor body 1 has a connecting bolt 2, the mounting base 3 has a mounting hole 4 for inserting the connecting bolt 2, the connecting bolt 2 has a through hole 6 formed thereon, the mounting base 3 has a positioning hole 5 communicated with the mounting hole 4, an inclination angle of the positioning hole 5 is consistent with an inclination angle of the through hole 6, the connecting bolt 2 and the mounting hole 4 are positioned by a positioning pin 7 inserted into the positioning hole 5 and the through hole 6, and a limiting structure is provided between the positioning pin 7 and the mounting base 3.

In order to ensure the stability of the positioning pin 7, an inclined plane is further arranged on the mounting seat 3, the mounting hole 4 is formed in the inclined plane, the inclined plane is perpendicular to the axial lead of the penetrating hole 6, and the head of the positioning pin 7 is abutted to the inclined plane.

In order to guarantee that the positioning pin 7 can be stably located in the through hole 6 and the positioning hole 5, the positioning pin 7 is prevented from being shaken out by mechanical vibration, the limiting structure comprises a fixing ring 8 fixedly arranged at the head of the positioning pin 7, a flexible part 10 with one end fixedly connected with the mounting seat 3, and a positioning ring 9 fixedly arranged at the other end of the flexible part 10 and provided with a notch, wherein the length of the flexible part 10 is smaller than that of the positioning pin 7, the positioning pin 7 is always kept inserted due to the length limitation of the flexible part 10, the sensor body 1 can be stably connected with the mounting seat 3 due to the inclined arrangement, when the positioning pin is positioned, the positioning ring 9 is firstly separated from the fixing ring 8, the positioning pin 7 is enabled to be inserted into the positioning hole 5 and the through hole 6, and after the installation, the positioning ring 9 is inserted into the fixing ring 8 through the notch to limit the positioning pin 7.

In this embodiment, the flexible member 10 is preferably a metal chain, but other flexible members 10 may be used, such as nylon ropes.

In this embodiment, fixed knot constructs for fixed set up in the fixing bolt 11 of mount pad 3 bottom, this fixed knot constructs and presses the installation of electric formula sensor similar with prior art, directly will install the base through fixing bolt 11 and be fixed in the equipment that awaits measuring.

Example two: as shown in fig. 4, the difference from the first embodiment is that, in the first embodiment, the fixing structure is a connecting plate 12 fixedly arranged on two sides of the mounting base 3, a connecting hole is formed in the connecting plate 12, for a device to be tested with a large surface area, by additionally installing the connecting plate 12, the contact area is increased, and by fixing on two sides, the stability is further improved.

Example three: as shown in fig. 5, the difference from the first embodiment is that in the first embodiment, the fixing structure is a first clamping piece 13 and a second clamping piece 14, one end of which is rotatably connected to the mounting base 3, the other ends of the first clamping piece 13 and the second clamping piece 14 both have a connecting portion, the connecting portions are fixedly connected by a fastening member 15, for a cylindrical device to be tested, the cylindrical device to be tested is clamped by the first clamping piece 13 and the second clamping piece 14, so that the stability is better, and the fastening member 15 can be a screw or a bolt.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a piezoelectric type vibration sensor, its characterized in that, including the sensor body, with the mount pad of connection is dismantled mutually to the sensor body, have on the mount pad with its fixed knot structure, the bottom of sensor body has connecting bolt, the confession has on the mount pad connecting bolt male mounting hole, the through hole has been seted up on the connecting bolt slope, set up on the mount pad with the locating hole that the mounting hole communicates, the inclination of locating hole with the inclination of through hole is unanimous, connecting bolt with through inserting between the mounting hole the locating hole and locating pin in the through hole is fixed a position mutually, the locating pin with be provided with limit structure between the mount pad.

2. The piezoelectric vibration sensor according to claim 1, wherein the mounting base further comprises an inclined surface, the mounting hole is formed in the inclined surface, the inclined surface is perpendicular to an axis of the penetrating hole, and a head of the positioning pin abuts against the inclined surface.

3. The piezoelectric vibration sensor according to claim 2, wherein the limiting structure comprises a fixing ring fixedly disposed on the head of the positioning pin, a flexible member having one end fixedly connected to the mounting seat, and a positioning ring fixedly disposed on the other end of the flexible member and having a notch, and the length of the flexible member is smaller than that of the positioning pin.

4. The piezoelectric vibration sensor according to claim 3 wherein the flexure is a metal chain.

5. The piezoelectric vibration transducer according to claim 1, wherein the fixing structure is a fixing bolt fixedly disposed at the bottom of the mounting base.

6. The piezoelectric vibration transducer according to claim 1, wherein the fixing structure is a connecting plate fixedly disposed on at least one side of the mounting base, and the connecting plate has a connecting hole.

7. The piezoelectric vibration transducer according to claim 1, wherein the fixing structure is a first clip and a second clip, one end of the first clip and one end of the second clip are rotatably connected to the mounting base, and the other ends of the first clip and the second clip are respectively provided with a connecting portion, and the connecting portions are fixedly connected to each other through a fastening member.