Floating oil seal face pressure and torque on-line detection device

Abstract

The utility model relates to oil seal detection frock technical field especially relates to a kind of floating oil seal surface pressure and torque on-line detection device, including pedestal, through-hole is provided in the pedestal, through-hole is provided with force transmission shaft, linear bearing is provided with the outer sleeve of force transmission shaft, the floating oil seal of being detected is set in the one end of force transmission shaft, sensor is set in the other end, and the sensor is used to measure the surface pressure and torque transferred by the force transmission shaft. By increasing linear bearing in pedestal, and change main shaft to linear optical axis, reduce the friction between shaft and support base, optimize the transmission accuracy of surface pressure value;By canceling the use of traditional torque sensor and pressure sensor, change to two-dimensional force sensor, torque value and surface pressure value can be detected simultaneously, and the sensor is set at one end of linear optical axis, all weight of frock is supported by support base, so that the sensor is not affected by other force values, further improve the detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of oil seal testing tooling technology, and in particular to an online detection device for floating oil seal pressure and torque. Background Technology

[0002] A floating oil seal is a special type of mechanical seal primarily used for sealing rotating shafts under harsh operating conditions (such as high pollution, high wear, low speed, and heavy load environments). A floating oil seal consists of two metal rings and O-rings connected to each of the two metal rings. The metal rings fit tightly together under the elastic force of the O-rings, and the contact surfaces of the metal rings form the main sealing pair. Leakage is prevented by the contact of the end faces. The sealing performance of a floating oil seal depends primarily on the surface pressure between the end faces of the two metal rings and the frictional torque during relative rotation.

[0003] In existing technologies, when detecting face pressure and torque, the torque sensor is placed horizontally and directly connected to the floating oil seal mounting fixture, with the other end connected to the spindle. There is no support below the torque sensor, and the weight of the fixture combined with the lever arm of gravity generates a significant shear force on the torque sensor, affecting its accuracy. When measuring face pressure, the spindle passes directly through the support base with a clearance fit, without any friction-reducing device or design. Furthermore, to prevent the rotational torque from being directly transmitted to the pressure sensor measuring face pressure, potentially damaging it, a keyway is added to the spindle to offset the rotational torque to the support base. This further increases the friction between the spindle and the support base, and the significant friction affects the transmission and detection of face pressure values. Therefore, during durability testing of the floating oil seal, face pressure and torque values ​​cannot be accurately and in real-time monitored. Utility Model Content

[0004] Technical objective: In order to overcome the shortcomings of the existing technology, this utility model provides an online detection device for floating oil surface pressure and torque, thereby improving the detection accuracy.

[0005] Technical solution: To achieve the above objectives, this utility model discloses an online detection device for surface pressure and torque of a floating oil seal, including a base, a through hole in the base, a force transmission shaft in the through hole, a linear bearing on the outer sleeve of the force transmission shaft, a floating oil seal to be detected at one end of the force transmission shaft, and a sensor at the other end. The sensor is used to measure the surface pressure and torque transmitted through the force transmission shaft.

[0006] Furthermore, the force transmission axis is a linear optical axis.

[0007] Furthermore, a mounting base and a connecting base are respectively provided at both ends of the force transmission shaft. The mounting base is used to connect the floating oil seal mounting plate, and one end of the connecting base is connected to the force transmission shaft, and the other end is connected to the sensor.

[0008] Furthermore, one end of the sensor is connected to the connector, and the other end is connected to the support base and then connected to the base via the support base.

[0009] Furthermore, a polygonal protrusion is provided on the side of the mounting base that is connected to the force transmission shaft, and a matching groove is provided on the force transmission shaft. The mounting base and the force transmission shaft are engaged through the polygonal protrusion and the groove.

[0010] Furthermore, several linear bearings are provided.

[0011] Furthermore, the sensor is equipped with a display instrument that displays the surface pressure and torque values ​​in real time.

[0012] Furthermore, a polygonal protrusion is provided on the side of the connecting seat that connects to the force transmission shaft, and a matching groove is provided on the force transmission shaft. The connection between the connecting seat and the force transmission shaft is achieved through the polygonal protrusion and the groove.

[0013] Furthermore, the sensor is a two-dimensional force sensor that can simultaneously detect torque and surface pressure values.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model's online detection device reduces friction between the shaft and support by adding a linear bearing inside the base and replacing the main shaft with a linear optical axis, thus optimizing the transmission accuracy of surface pressure values. By eliminating the use of traditional torque and pressure sensors and replacing them with a two-dimensional force sensor, torque and surface pressure values ​​can be detected simultaneously. Furthermore, by placing the sensor at one end of the linear optical axis and supporting the entire weight of the fixture with the support, the sensor is not affected by other forces, further improving detection accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the online detection device of this utility model;

[0017] Figure 2 This is a cross-sectional view of the overall structure of the online detection device of this utility model;

[0018] Figure 3 This is a schematic diagram of the mounting base structure;

[0019] Figure 4 This is a schematic diagram of a linear optical axis structure.

[0020] In the diagram, 1 is the mounting base; 2 is the force transmission shaft; 3 is the base; 4 is the linear bearing; 5 is the connecting seat; 6 is the sensor; 7 is the support seat; 8 is the polygonal protrusion; and 9 is the groove. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 To be continued Figure 4 The principles and features of this utility model are described, and the examples given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0022] A floating oil surface pressure and torque online detection device includes a base 3, and also includes a mounting base 1, a force transmission shaft 2, a connecting base 5, a sensor 6 and a support base 7 connected in sequence. The force transmission shaft 2 is fitted with a linear bearing 4, and a through hole is provided in the base 3, and the linear bearing 4 is installed in the through hole.

[0023] The online detection device of this invention is connected to a floating oil seal fixing fixture. The floating oil seal fixing fixture includes two opposing floating oil seal mounting plates, namely a rotating plate and a fixed plate. The two parts of the floating oil seal to be detected are respectively installed in the two floating oil seal mounting plates. The fixed plate is bolted to the mounting base 1. The rotating plate, driven by the drive device on the floating oil seal fixing fixture, generates axial pressure and rotation. The resulting surface pressure and torque are transmitted between the two floating oil seals, and sequentially through the fixed plate, mounting base 1, force transmission shaft 2, and connecting base 5, finally reaching the sensor 6. The sensor 6 is a two-dimensional force sensor that can simultaneously detect torque and surface pressure values. The sensor 6 is equipped with a display instrument to display and store the surface pressure and torque values ​​in real time.

[0024] The force transmission shaft 2 has a mounting base 1 and a connecting base 5 at both ends. One end of the mounting base 1 is connected to the force transmission shaft 2, and the other end is used to connect to the fixing plate of the floating oil seal fixing fixture. One end of the connecting base 5 is connected to the force transmission shaft 2, and the other end is connected to the sensor 6. The force transmission shaft 2 is a linear optical shaft with grooves 9 on both ends. A polygonal protrusion 8 is provided on the side of the mounting base 1 that connects to the force transmission shaft 2. The polygonal protrusion 8 matches the shape of the groove 9, and the two are snapped together. Bolt holes are also provided in the protrusion 8 and the groove 9. During installation, the protrusion 8 is inserted into the groove 9, and then the two are fixed with bolts. Specifically, the cross-sectional shape of the polygonal protrusion 8 and the groove 9 can be rectangular, triangular, etc. The connection method between the connecting base 5 and the force transmission shaft 2 is the same as that between the mounting base 1 and the force transmission shaft 2, and will not be described again.

[0025] One end of the sensor 6 is connected to the force transmission shaft 2 via the connecting seat 5, and the other end is connected to the support seat 7 and then to the base 3. Specifically, the end face of the sensor 6 is fixedly connected to the end face of the connecting seat 5 and one end of the support seat 7 by bolts, and the other end of the support seat 7 is also fixed to the base 3 by bolts.

[0026] The linear bearing 4 can be set in several numbers according to the length of the through hole in the base 3. Specifically, there are two linear bearings 4.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A floating oil surface pressure and torque online detection device, characterized in that, Includes a base (3), a through hole is provided in the base (3), a force transmission shaft (2) is provided in the through hole, a linear bearing (4) is provided on the outer sleeve of the force transmission shaft (2), a floating oil seal to be detected is provided at one end of the force transmission shaft (2), and a sensor (6) is provided at the other end. The sensor (6) is used to measure the surface pressure and torque transmitted through the force transmission shaft (2).

2. The online detection device for floating oil surface pressure and torque according to claim 1, characterized in that, The force transmission axis (2) is a linear optical axis.

3. The online detection device for floating oil surface pressure and torque according to claim 2, characterized in that, The force transmission shaft (2) is provided with a mounting seat (1) and a connecting seat (5) at both ends. The mounting seat (1) is used to connect the floating oil seal mounting plate. One end of the connecting seat (5) is connected to the force transmission shaft (2), and the other end is connected to the sensor (6).

4. The online detection device for floating oil surface pressure and torque according to claim 3, characterized in that, One end of the sensor (6) is connected to the connecting seat (5), and the other end is connected to the support seat (7) and connected to the base (3) through the support seat (7).

5. The online detection device for floating oil surface pressure and torque according to claim 4, characterized in that, The mounting base (1) is provided with a polygonal protrusion (8) on the side connected to the force transmission shaft (2), and the force transmission shaft (2) is provided with a matching groove (9). The mounting base (1) and the force transmission shaft (2) are engaged through the polygonal protrusion (8) and the groove (9).

6. The online detection device for floating oil surface pressure and torque according to claim 5, characterized in that, The linear bearing (4) is provided in several units.

7. The online detection device for floating oil surface pressure and torque according to claim 6, characterized in that, The sensor (6) is equipped with a display instrument that displays the surface pressure and torque values ​​in real time.

8. The online detection device for floating oil surface pressure and torque according to claim 5, characterized in that, The connecting seat (5) is provided with a polygonal protrusion (8) on the side connected to the force transmission shaft (2), and the force transmission shaft (2) is provided with a matching groove (9). The connecting seat (5) and the force transmission shaft (2) are engaged through the polygonal protrusion (8) and the groove (9).

9. The online detection device for floating oil surface pressure and torque according to claim 7, characterized in that, The sensor (6) is a two-dimensional force sensor that can simultaneously detect torque and surface pressure values.

Images