Miniature force transducer mounting seat

Abstract

The utility model belongs to the technical field of bearing capacity detection, and relates to a miniature force transducer mounting seat, which comprises a base and a fixing seat, a bearing to be detected is arranged in the base, the fixing seat is fixedly connected with the base, and a miniature force transducer contacted with the bearing to be detected is mounted in a cavity of the fixing seat. Wherein the base and the fixed seat are provided with centering structures which are matched with each other, and the centering structures are used for realizing centering installation of the tested bearing and the miniature force transducer. The mounting seat has the advantages of simple structure, convenience and quickness in disassembly and assembly and low cost, can meet the requirement of mounting the miniature force transducer in a narrow space, can ensure the centering operation of the miniature force transducer and the measured bearing in the mounting process, ensures the coaxiality requirement of the miniature force transducer and the measured bearing, and improves the mounting efficiency. And therefore, the technical difficulty of accurately measuring the bearing capacity of the measured bearing by the miniature force sensor can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing force detection and relates to a micro force sensor mounting seat. Background Art

[0002] Bearing capacity is an important technical parameter in the rotating machinery support system. Its upper and lower limits affect the vibration performance and bearing life of the rotating machinery. Therefore, it is necessary to monitor the bearing capacity in real time.

[0003] The load-bearing capacity is usually measured by a micro force sensor installed in the rotating machinery support system. Due to the small installation space of the support system, it is difficult to install the micro force sensor and it is difficult to align the micro force sensor with the measured bearing. However, the load-bearing capacity measurement accuracy of the measured bearing is closely related to the coaxiality between the micro force sensor and the measured bearing. Therefore, ensuring the installation accuracy of the micro force sensor is of great significance to the vibration performance evaluation of rotating machinery and bearing design.

[0004] In view of this, it is necessary to design a miniature force sensor mounting base, which can realize the installation of the miniature force sensor in a narrow space while meeting the installation coaxiality, and ensure the accuracy of the vibration performance evaluation of the rotating machinery by accurately measuring the bearing capacity. Utility Model Content

[0005] In order to solve the difficulty of installing a micro force sensor in a small space and the technical problem of installation coaxiality between the micro force sensor and the bearing to be measured, the utility model discloses a micro force sensor mounting seat. Under the premise of meeting the installation coaxiality, the mounting seat can realize the installation of the micro force sensor in a small space, and ensure the accuracy of the vibration performance evaluation of the rotating machinery by accurately measuring the bearing capacity.

[0006] The technical solution for achieving the purpose of the utility model is as follows: a miniature force sensor mounting seat, including a base and a fixed seat, a bearing to be measured is arranged in the base, the fixed seat is fixedly connected to the base, and a miniature force sensor in contact with the bearing to be measured is installed in the cavity of the fixed seat.

[0007] The base and the fixing seat are provided with mutually cooperating centering structures, and the centering structures are used to realize the centering installation of the measured bearing and the micro force sensor.

[0008] Furthermore, the centering structure includes an arcuate groove and an arcuate protrusion with interference fit, the arcuate groove is located on the lower end surface of the base, and the arc center of the arcuate groove coincides with the center of the bearing to be measured; the arcuate protrusion is located on the upper end of the fixed seat, and the center of the arcuate protrusion coincides with the center of the micro force sensor.

[0009] Furthermore, there are at least two arc-shaped grooves, and a spacing is provided between two adjacent arc-shaped grooves;

[0010] There are at least two arc-shaped protrusions, and a spacing is provided between adjacent arc-shaped protrusions.

[0011] Preferably, there are three arc-shaped grooves and three arc-shaped protrusions.

[0012] In an improved embodiment, the depth of the arc groove is greater than the length of the measured bearing extending out of the lower end surface of the base, and the height of the arc protrusion is greater than or equal to the depth of the arc groove.

[0013] In an improved embodiment, the curvature of the arc-shaped groove is 30-90°, and the curvature of the arc-shaped protrusion is smaller than that of the arc-shaped groove.

[0014] In an improved embodiment, a lead hole communicating with the cavity is provided on the lower side wall of the fixing seat, and the signal line of the micro force sensor is led out through the lead hole.

[0015] In an improved embodiment, an observation window communicating with the cavity is provided on the upper portion of the fixing seat.

[0016] In an improved embodiment, the fixing seat is provided with a through hole, and the base is provided with a threaded mounting hole corresponding to the through hole. The screw passes through the through hole and is screwed into the threaded mounting hole to mount the base to the fixing seat.

[0017] In an improved embodiment, a mounting hole is provided at the center of the bottom of the fixing seat, and the bolt passes through the mounting hole and is connected to the micro force sensor located in the cavity.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the micro force sensor mounting seat designed by the present invention has the advantages of simple structure, easy and quick disassembly and assembly, and low cost. It can meet the needs of installing a micro force sensor in a narrow space. At the same time, during the installation process, it can ensure the alignment operation of the micro force sensor and the bearing to be measured, ensuring the coaxiality requirements of the two, thereby realizing the technical difficulty of the micro force sensor accurately measuring the bearing capacity of the bearing to be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0020] Figure 1 It is a schematic diagram of the mounting base of the miniature force sensor of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the fixing seat of the utility model;

[0022] Among them, 1. base; 2. fixing seat; 3. micro force sensor; 4. bolt; 5. screw; 6. arc-shaped protrusion; 7. measured bearing; 8. arc-shaped groove; 9. mounting hole; 12. through hole; 11. threaded mounting hole; 13. observation window; 14. micro force sensor signal line. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with specific embodiments, and the advantages and features of the present invention will become clearer as the description proceeds. However, these embodiments are merely exemplary and do not constitute any limitation to the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solution of the present invention may be modified or replaced without departing from the spirit and scope of the present invention, but these modifications and replacements fall within the scope of protection of the present invention.

[0024] The utility model discloses a miniature force sensor mounting seat, see Figure 1 As shown, the micro force sensor mounting seat includes a base 1 and a fixing seat 2. A bearing 7 to be measured is arranged in the base 1, and a portion of the bearing 7 to be measured passes through the lower end surface of the base 1. The fixing seat 2 is fixedly connected to the base 1, and a micro force sensor 3 in contact with the bearing 7 to be measured is installed in the cavity of the fixing seat 2.

[0025] The base 1 and the fixing base 2 are provided with mutually matched centering structures, and the centering structures are used to realize the centering installation of the measured bearing 7 and the micro force sensor 3 .

[0026] Further, see Figure 1 and Figure 2 As shown, the centering structure includes an arc groove 8 and an arc protrusion 6 with interference fit, the arc groove 8 is located on the lower end surface of the base 1, and the arc center of the arc groove 8 coincides with the center of the measured bearing 7; the arc protrusion 6 is located on the upper end of the fixed seat 2, and the center of the arc protrusion 6 coincides with the center of the micro force sensor 3. When the fixed seat 2 and the base 1 are installed, the arc protrusion 6 on the fixed seat 2 is aligned with the arc groove 8 on the lower end surface of the base 1, and the arc protrusion 6 enters the arc groove 8 by rotating left and right, so that the fixed seat 2 and the base 1 are close to each other. After observing or monitoring that the micro force sensor 3 and the measured bearing 7 are aligned and in contact, the fixed seat 2 and the base 1 are fixed, and the installation of the two can be completed.

[0027] Furthermore, there are at least two arcuate grooves 8, and a spacing is provided between two adjacent arcuate grooves 8; there are at least two arcuate protrusions 6, and a spacing is provided between adjacent arcuate protrusions 6. In this specific embodiment, preferably, there are three arcuate grooves 8 and three arcuate protrusions 6, and the spacings between the three arcuate grooves 8 and the three arcuate protrusions 6 are equal.

[0028] In an improved embodiment, in order to ensure that the measured bearing 7 can contact the micro-force sensor 3 in the fixed seat 2, the depth of the arc groove 8 is greater than the length of the measured bearing 7 extending from the lower end surface of the base 1, and the height of the arc protrusion 6 is greater than or equal to the depth of the arc groove 8. For example, when the depth of the arc groove 8 is 2 mm, the length of the measured bearing 7 extending from the lower end surface of the base 1 with a length of 14 mm should be less than 2 mm, which can be 0.5-1.8 mm, and the height of the arc protrusion 6 can be selected to be 2-3 mm.

[0029] In an improved embodiment, the curvature of the arc groove 8 is 30 to 90°, and the curvature of the arc protrusion 6 is smaller than that of the arc groove 8 to achieve an interference fit between the arc groove 8 and the arc protrusion 6. For example, the curvature of the arc protrusion 6 can be 20 to 80°.

[0030] In an improved embodiment, see Figure 1 As shown, a lead hole communicating with the cavity is provided on the lower side wall of the fixing seat 2, and the micro force sensor signal line 14 is led out through the lead hole.

[0031] In an improved embodiment, see Figure 2 As shown, an observation window 13 connected to the cavity is provided on the upper portion of the fixing seat 2. When the fixing seat 2 and the base 1 are installed, the observation window 13 can facilitate observation of the contact and alignment between the micro-force sensor 3 and the measured bearing 7, ensure that the micro-force sensor 3 can contact the measured bearing 7, and avoid excessive contact between the micro-force sensor 3 and the measured bearing 7 to damage the micro-force sensor 3. It should be noted here that the lead hole can be provided separately from the observation window 13, or the observation window 13 can be used as a lead hole to lead out the micro-force sensor signal line 14. In this specific embodiment, the height of the observation window 13 can be 9 mm.

[0032] In an improved embodiment, see Figure 1 and Figure 2 As shown, the fixing seat 2 is provided with a through hole 12, and the base 1 is provided with a threaded mounting hole 11 corresponding to the through hole 12. The screw 5 passes through the through hole 12 and is screwed into the threaded mounting hole 11 to mount the base 1 on the fixing seat 2. In this specific embodiment, see Figure 2 As shown, there are three through holes 12 on the fixing base 2, and the three through holes 12 are evenly distributed.

[0033] In an improved embodiment, see Figure 1 and Figure 2 As shown, a mounting hole 9 is provided at the center of the bottom of the fixing seat 2, and the bolt 4 passes through the mounting hole 9 and is connected to the micro force sensor 3 located in the cavity.

[0034] The operation process of the above-mentioned micro force sensor mounting base is as follows:

[0035] First, the bearing 7 to be tested is set on the base 1, and the bearing 7 to be tested passes through the lower end surface of the base 1; the micro force sensor 3 is fixed in the cavity of the fixing seat 2, and the upper end surface of the micro force sensor 3 is flush with the upper end surface of the fixing seat 2 or slightly lower than the upper end surface of the fixing seat 2;

[0036] Secondly, move the fixing seat 2 close to the base 1, and make the arc-shaped protrusion 6 face the arc-shaped groove 8, and make the fixing seat 2 close to the base 1 by rotating left and right; at the same time, observe the contact and alignment of the micro-force sensor 3 and the measured bearing 7 through the observation window 13;

[0037] Finally, after the micro force sensor 3 is in contact with and aligned with the measured bearing 7, the fixing seat 2 is fixed to the base 1 using screws 5.

[0038] The micro force sensor mounting seat designed by the utility model has the advantages of simple structure, easy and quick disassembly and assembly, and low cost. It can meet the needs of installing a micro force sensor in a narrow space. At the same time, during the installation process, it can ensure the alignment operation of the micro force sensor and the measured bearing to ensure the coaxiality requirements of the two, thereby realizing the technical difficulty of the micro force sensor accurately measuring the bearing capacity of the measured bearing.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A miniature force sensor mounting base, Features: The device comprises a base (1) and a fixed base (2); a bearing to be measured (7) is arranged in the base (1); the fixed base (2) is connected to the base (1); and a micro force sensor (3) in contact with the bearing to be measured (7) is installed in the cavity of the fixed base (2); The base (1) and the fixing base (2) are provided with mutually matching centering structures, and the centering structure is used to realize the centering installation of the measured bearing (7) and the micro-force sensor (3), wherein the centering structure comprises an arc groove (8), an arc protrusion (6) and a screw (5), wherein the arc groove (8) is located at the lower end surface of the base (1), and the arc center of the arc groove (8) coincides with the center of the measured bearing (7); the arc protrusion (6) is located at the upper end of the fixing base (2), and the center of the arc protrusion (6) coincides with the center of the micro-force sensor (3); the fixing base (2) is provided with a through hole (12), and the base (1) is provided with a threaded mounting hole (11) corresponding to the through hole (12); the screw (5) passes through the through hole (12) and is screwed into the threaded mounting hole (11) to mount the base (1) on the fixing base (2).

2. The micro force sensor mounting base according to claim 1, Features: There are at least two arc-shaped grooves (8), and a spacing is provided between two adjacent arc-shaped grooves (8); There are at least two arc-shaped protrusions (6), and a spacing is provided between adjacent arc-shaped protrusions (6).

3. The micro force sensor mounting base according to claim 2, Features: There are three arc-shaped grooves (8) and three arc-shaped protrusions (6).

4. The micro force sensor mounting seat according to any one of claims 1 to 3, Features: The depth of the arc groove (8) is greater than the length of the measured bearing (7) extending out of the lower end surface of the base (1), and the height of the arc protrusion (6) is greater than or equal to the depth of the arc groove (8).

5. The micro force sensor mounting seat according to any one of claims 1 to 3, Features: The arcuate angle of the arcuate groove (8) is 30 to 90 degrees, and the arcuate angle of the arcuate protrusion (6) is smaller than that of the arcuate groove (8).

6. The micro force sensor mounting seat according to any one of claims 1 to 3, Features: A lead hole communicating with the cavity is provided on the lower side wall of the fixing seat (2), and a micro force sensor signal line (14) is led out through the lead hole.

7. The micro force sensor mounting seat according to any one of claims 1 to 3, Features: An observation window (13) communicating with the cavity is provided on the upper portion of the fixing seat (2).

8. The micro force sensor mounting seat according to any one of claims 1 to 3, Features: A mounting hole (9) is provided at the center of the bottom of the fixing seat (2), and a bolt (4) passes through the mounting hole (9) and is connected to the micro force sensor (3) located in the cavity.

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