Detection device for trunnion sliding bearing

Abstract

The utility model belongs to the technical field of gate operation monitoring, and provides a trunnion sliding bearing detection device which comprises an acoustic emission sensor, a fixing clamp used for fixing the acoustic emission sensor, a signal amplifier electrically connected with the acoustic emission sensor, and an acoustic emission collector electrically connected with the signal amplifier. The acoustic emission sensor comprises a shell, a coupling surface arranged at the bottom of the shell, piezoelectric ceramic arranged in the shell and located above the coupling surface, a terminal connected with the piezoelectric ceramic through a wire, a lattice material layer filled between the piezoelectric ceramic and the coupling surface, and a detachable sealing cover arranged at the upper end of the shell. According to the acoustic emission sensor, the lattice material layer is filled in the acoustic emission sensor, and due to the fact that lattices have periodicity and the vibration of the lattices has a wave form, the filtering effect can be achieved through the arrangement of the lattice material layer, and the good filtering effect on noise existing in the operation process of a gate is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gate operation monitoring, and in particular relates to a hinge sliding bearing detection device. Background Art

[0002] Hinge sliding bearings are one of the components of the gate, and their detection is part of the monitoring process for safe gate operation. Prior art detection schemes include the following: using acoustic emission detection technology to detect hinge sliding bearings. This technology primarily uses acoustic emission sensors to collect signals from hinge sliding bearings, and can detect longitudinal waves, transverse waves, surface waves, and other signals generated by bearing failures, enabling non-destructive measurement. However, during gate operation, noise of various frequency bands exists, and most noise is difficult to filter through algorithms. This results in existing acoustic emission detection technology solutions being significantly affected by noise and exhibiting poor filtering effects in actual hinge sliding bearing detection. Utility Model Content

[0003] The purpose of the utility model is to provide a hinge sliding bearing detection device with a simple structure and convenient implementation, so as to solve the technical problems existing in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A hinged sliding bearing detection device includes an acoustic emission sensor, a fixing fixture for fixing the acoustic emission sensor, a signal amplifier electrically connected to the acoustic emission sensor, and an acoustic emission collector electrically connected to the signal amplifier. The acoustic emission sensor includes a housing, a coupling surface arranged at the bottom of the housing, a piezoelectric ceramic arranged in the housing and located above the coupling surface, a terminal connected to the piezoelectric ceramic wire, a lattice material layer filled between the piezoelectric ceramic and the coupling surface, and a removable cover arranged at the upper end of the housing.

[0006] Furthermore, the lattice material layer fills the gap between the piezoelectric ceramic and the coupling surface.

[0007] Furthermore, the height of the lattice material layer is 1 / 5 to 4 / 5 of the height of the piezoelectric ceramic.

[0008] Furthermore, the height of the lattice material layer is 1 / 2 of the height of the piezoelectric ceramic.

[0009] Furthermore, the shell is in the shape of a hollow cylinder, and a connecting hole coaxial with and in communication with the inner cavity is provided at the upper end thereof, and the detachable cover is detachably connected to the shell through the connecting hole.

[0010] Furthermore, the fixing fixture includes a ring-shaped magnetic chassis, a guide column arranged on the magnetic chassis, a fixing frame arranged at the upper end of the guide column, a movable fixing plate located between the magnetic chassis and the fixing frame, a sealing cap arranged at the lower end of the movable fixing plate and matching the upper end of the outer shell, and an operating rod arranged on the movable fixing plate, the upper end of the operating rod passing through the fixing frame.

[0011] Furthermore, the sealing cap is concave, and a rubber sealing layer is provided on the inner wall of the sealing cap.

[0012] Furthermore, a notch is provided on the magnetic chassis.

[0013] Furthermore, the operating rod adopts a screw structure, and the operating rod passes through the middle of the fixing frame and is threadedly connected thereto.

[0014] Furthermore, there are three guide columns, which are arranged in an equilateral triangle.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The utility model fills the acoustic emission sensor with a lattice material layer. Since the lattice is periodic and the vibration of the lattice is in the form of waves, the setting of the lattice material layer can achieve a filtering effect, thereby having a better filtering effect on the noise existing in the operation process of the gate.

[0017] In the utility model, the filling lattice material layer can be changed by the detachable cover. On this basis, a fixing fixture with a sealing cap is used to seal the connecting gap between the detachable cover and the shell, so as to improve the waterproof effect of the acoustic emission sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structural principle of the utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the acoustic emission sensor in this utility model.

[0020] Figure 3 This is a schematic structural diagram of the fixing fixture and acoustic emission sensor in the present utility model.

[0021] Among them, the names corresponding to the figure marks are as follows: 1-acoustic emission sensor, 2-signal amplifier, 3-acoustic emission collector, 4-fixing fixture; 11-housing, 12-coupling surface, 13-piezoelectric ceramic, 14-terminal, 15-lattice material layer, 16-detachable cover; 41-magnetic chassis, 42-guide column, 43-fixing frame, 44-movable fixing plate, 45-sealing cap, 46-operating rod, 47-rubber sealing layer, 48-notch. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to have a clearer understanding and knowledge of the present invention, the present invention is further described in detail below in conjunction with the embodiments. It should be noted that the specific embodiments described below are only used to explain the present invention and facilitate understanding. The technical solutions provided by the present invention are not limited to the technical solutions provided by the following embodiments, and the technical solutions provided by the embodiments should not limit the scope of protection of the present invention.

[0023] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words “include” or “comprise” and the like used in this application mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The positional relationship words “upper”, “lower”, “left”, “right”, “front”, “back”, etc. are determined according to the layout direction of the drawings in the specification, and are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Example

[0025] like Figures 1-3 As shown, this embodiment provides a hinge sliding bearing detection device, which mainly consists of four parts: an acoustic emission sensor, a fixing fixture, a signal amplifier and an acoustic emission collector, wherein the fixing fixture is used to fix the acoustic emission sensor so that it is fixed on the surface of the object to be tested, and the signal amplifier is used to amplify the signal of the acoustic emission sensor and then transmit it to the acoustic emission collector. In this embodiment, the signal amplifier and the acoustic emission collector can both use existing mature products, so they are not described here.

[0026] Taking into account that there is a lot of noise during the operation of the gate and it cannot be filtered by the algorithm, this embodiment improves the acoustic emission sensor, which includes a shell, a coupling surface arranged at the bottom of the shell, a piezoelectric ceramic arranged in the shell and located above the coupling surface, a terminal connected to the piezoelectric ceramic wire, a lattice material layer filled between the piezoelectric ceramic and the coupling surface, and a detachable cover arranged at the upper end of the shell; wherein, the shell is a hollow cylindrical shell, and a connecting hole coaxial with and connected to its inner cavity is provided at its upper end. The detachable cover is detachably connected to the shell through the connecting hole, and the detachable cover and the shell are detachably connected. This connection method belongs to the existing conventional connection method, and there are many methods, for example: the detachable cover and the shell are connected by threads, or the detachable cover and the shell are buckled, etc.

[0027] In this embodiment, the lattice material layer is located in the gap between the piezoelectric ceramic and the coupling surface. Preferably, the lattice material layer completely fills the gap between the piezoelectric ceramic and the coupling surface. The filling height of the lattice material layer is within the following range: the height of the lattice material layer is 1 / 5 to 4 / 5 of the height of the piezoelectric ceramic. Preferably, the height of the lattice material layer is 1 / 2 of the height of the piezoelectric ceramic. The height of the piezoelectric ceramic is generally 4 to 10 mm. The filled lattice material layer can be changed by a removable cover, for example, by opening the removable cover and replacing the filled lattice material layer. Those skilled in the art can also select different lattice material layer heights according to actual application requirements. Different lattice material layer heights will result in different corresponding filtering effects.

[0028] The hinge sliding bearing is a metal component, so in this embodiment, the fixing fixture adopts a magnetic method, which includes a ring-shaped magnetic chassis, a guide column arranged on the magnetic chassis, a fixed frame arranged at the upper end of the guide column, a movable fixed disk located between the magnetic chassis and the fixed frame, a sealing cap arranged at the lower end of the movable fixed disk and matching the upper end of the outer shell, and an operating rod arranged on the movable fixed disk, the upper end of the operating rod passes through the fixed frame, and preferably, the operating rod adopts a screw structure, the operating rod passes through the middle part of the fixed frame and is threadedly connected to it.

[0029] Because the acoustic emission sensor utilizes a removable cover at its top, there is a certain gap between the cover and the housing. Improper handling of this gap can easily lead to water ingress into the sensor, impacting normal operation or even damaging the sensor. Therefore, in this embodiment, based on the provision of a sealing cap, the movable fixed plate moves downward, and the sealing cap covers the top of the acoustic emission sensor, thereby sealing the top of the acoustic emission sensor and improving its waterproof capabilities. In a further preferred embodiment, the sealing cap is concave, and its inner wall is provided with a rubber sealing layer.

[0030] This embodiment features a notch on the magnetic chassis to facilitate insertion and removal of the acoustic emission sensor during operation. Three guide posts are arranged in an equilateral triangle, and the corresponding mounting bracket can utilize a matching tripod structure. The three guide posts extend through a movable mounting plate, which is movable along the length of the guide posts.

[0031] When assembling the fixing fixture, first fix the acoustic emission sensor on the surface of the object to be measured; then insert the fixing fixture through the magnetic chassis at the bottom, so that the acoustic emission sensor is placed in the fixing fixture (inside the magnetic chassis); finally, rotate the operating rod, the operating rod moves downward relative to the fixed frame, and the lower end of the operating rod is fixedly connected to the movable fixing plate. As a result, the operating rod drives the movable fixing plate to move downward until the sealing cap covers the upper end of the acoustic emission sensor, completing the fixation.

[0032] The above is the preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements without departing from the design principle and technical solution of the present invention, and these improvements should also be considered as the scope of protection of the present invention.

Claims

1. A hinge sliding bearing detection device, comprising an acoustic emission sensor (1), a fixing fixture (4) for fixing the acoustic emission sensor (1), a signal amplifier (2) electrically connected to the acoustic emission sensor (1), and an acoustic emission collector (3) electrically connected to the signal amplifier (2), characterized in that: The acoustic emission sensor (1) includes a housing (11), a coupling surface (12) arranged at the bottom of the housing (11), a piezoelectric ceramic (13) arranged in the housing (11) and located above the coupling surface (12), a terminal (14) connected to the piezoelectric ceramic (13) by wire, a lattice material layer (15) filled between the piezoelectric ceramic (13) and the coupling surface (12), and a detachable cover (16) arranged at the upper end of the housing (11).

2. The hinge sliding bearing detection device according to claim 1, characterized in that: The lattice material layer (15) fills the gap between the piezoelectric ceramic (13) and the coupling surface (12).

3. The hinge sliding bearing detection device according to claim 2, characterized in that: The height of the lattice material layer (15) is 1 / 5 to 4 / 5 of the height of the piezoelectric ceramic (13).

4. The hinge sliding bearing detection device according to claim 3, characterized in that: The height of the lattice material layer (15) is 1 / 2 of the height of the piezoelectric ceramic (13).

5. The hinge sliding bearing detection device according to claim 4, characterized in that: The outer shell (11) is cylindrical with a hollow interior, and a connecting hole is provided at its upper end, which is coaxial with and communicates with the inner cavity thereof. The detachable cover (16) is detachably connected to the outer shell (11) through the connecting hole.

6. The hinge sliding bearing detection device according to claim 5, characterized in that: The fixing fixture (4) includes an annular magnetic chassis (41), a guide post (42) arranged on the magnetic chassis (41), a fixing frame (43) arranged at the upper end of the guide post (42), a movable fixing plate (44) located between the magnetic chassis (41) and the fixing frame (43), a sealing cap (45) arranged at the lower end of the movable fixing plate (44) and matching the upper end of the housing (11), and an operating rod (46) arranged on the movable fixing plate (44), the upper end of the operating rod (46) passing through the fixing frame (43).

7. The hinge sliding bearing detection device according to claim 6, characterized in that: The sealing cap (45) is concave in shape, and a rubber sealing layer (47) is provided on its inner wall.

8. The hinge sliding bearing detection device according to claim 7, characterized in that: A notch portion (48) is provided on the magnetic chassis (41).

9. The hinge sliding bearing detection device according to claim 8, characterized in that: The operating rod (46) adopts a screw structure, and the operating rod (46) passes through the middle of the fixing frame (43) and is threadedly connected thereto.

10. The hinge sliding bearing detection device according to claim 9, characterized in that: There are three guide columns (42) arranged in an equilateral triangle.

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