Deviation correction tension sensor

Abstract

The utility model discloses a deviation-rectifying tension sensor, which comprises a shell, a sensor strain body, a bearing seat, a sealing bearing, a connecting shaft and an electric connector, the sensor strain body is fixedly located in the shell, the bearing seat is fixedly located at the upper end in the shell, the sealing bearing is fixedly located in the bearing seat, the bearing seat is connected with a top flange of the sensor strain body, the electric connector is fixedly located at the bottom of the shell and electrically connected with the sensor strain body, and one end of the connecting shaft is fixedly connected with the sealing bearing. And the other end of the connecting shaft is positioned outside the bearing seat and is provided with external threads. The utility model has the advantages that the bearing seat can be detached and replaced at any time, the service life of the deviation-rectifying tension sensor is prolonged, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of tension sensors, in particular to a deviation-correcting tension sensor. Background Art

[0002] The tension sensor is an instrument used to measure the tension value of the shaft during the tension control process. When the sensor is subjected to external pressure, it sends the measured tension signal, and the amount of the tension signal is proportional to the amount of tension.

[0003] At present, a Chinese patent application with authorization announcement number "CN218381378U" discloses a tension sensor, including a mounting seat, a protective shell, a sensor assembly and at least one adjusting bolt; the bearing seat body of the mounting seat is connected to the mounting plate through a deformation beam, and the bearing seat body is provided with a bearing mounting groove for installing the bearing; the strain gauge of the sensor assembly is arranged on the deformation beam of the mounting seat; the protective shell is provided with an inner hole that cooperates with the bearing seat body and the deformation beam of the mounting seat, the protective shell is fixed to the mounting plate of the mounting seat, and the side wall of the protective shell is provided with at least one adjusting threaded hole that communicates with the inner hole; the protective shell is sleeved on the outer side of the bearing seat body and the deformation beam of the mounting seat, and the protective shell is fixedly connected to the mounting plate of the mounting seat, and the adjusting bolt passes through the threaded hole of the protective shell and extends into the inner hole of the protective shell. However, as for the bearing seat, long-term wear of the bearing will greatly affect the measurement data and equipment stability. In severe cases, it will cause the equipment to break and cause great losses. In particular, there is a lot of dust on site. Dust entering the bearing will greatly reduce the service life of the tension sensor. At present, the life of the tension sensor is about one year, but the life of the bearing seat is only half a year. The bearing seat and the strain body part of the sensor are fixed together. Once the bearing seat is scrapped, the entire set of sensors needs to be dismantled, resulting in a waste of resources. Utility Model Content

[0004] The utility model aims to provide a deviation correction tension sensor, which has the advantages of being able to dismantle and replace a new bearing seat at any time, increasing the service life of the deviation correction tension sensor and reducing the cost.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A deviation-correcting tension sensor comprises a housing, a sensor strain body, a bearing seat, a sealed bearing, a connecting shaft, and an electrical connector;

[0007] The sensor strain body is fixedly located inside the shell, the bearing seat is fixedly located at the upper end inside the shell, the sealed bearing is fixedly located inside the bearing seat, the bearing seat is connected to the top flange of the sensor strain body, the electrical connector is fixedly located at the bottom of the shell, the electrical connector is electrically connected to the sensor strain body, one end of the connecting shaft is fixedly connected to the sealed bearing, and the other end of the connecting shaft is located outside the bearing seat and is provided with an external thread.

[0008] The preferred solutions are as follows:

[0009] Preferably: the sensor strain body includes two deformation beams, a top connecting flange, and a bottom connecting flange, the two deformation beams are fixed between the top connecting flange and the bottom connecting flange, the bearing seat is located on the top of the top connecting flange, and the bottom connecting flange is connected to the internal flange of the shell.

[0010] Preferably: the shell is a barrel-shaped cylinder with a U-shaped vertical cross-section, a first placement groove is opened at the bottom of the shell, a second placement groove is opened at the top wall inside the first placement groove, a first circular through-hole is opened at the top wall inside the second placement groove, a second circular through-hole is opened at the center of the bottom connecting flange, the electrical connector is inserted into the first circular through-hole and the second circular through-hole, a first flange is provided on the electrical connector, the first flange is located in the second placement groove, a sealing ring is provided between the top of the first flange and the top wall inside the second placement groove, the bottom of the first flange is flush with the top wall inside the first placement groove, a fixing block is connected to the flange inside the first placement groove, a third circular through-hole is opened at the center of the fixing block, the fixing block is sleeved on the outer wall of the electrical connector, and the top of the fixing block is against the bottom of the first flange.

[0011] Preferably, a second flange is fixedly sleeved at the lower end of the outer side wall of the shell.

[0012] Preferably: a third cylindrical placement groove is opened at the center of the bottom circle of the bearing seat, the sealed bearing is inserted in the third placement groove with an interference fit, a fourth circular through hole is opened on the inner top wall of the third placement groove, the end of the connecting shaft without an external thread passes through the fourth circular through hole and is inserted in the sealed bearing with an interference fit, a first threaded hole is opened at the bottom of the connecting shaft, a first bolt is threadedly connected to the first threaded hole, and the first bolt is against the sealed bearing.

[0013] Preferably: a circular fourth placement groove is opened at the center of the top of the bearing seat, and the connecting shaft fixing sleeve is provided with a circular baffle, the thickness of the baffle is twice the depth of the fourth placement groove, the baffle is located in the fourth placement groove, and one-half of the baffle protrudes out of the fourth placement groove.

[0014] Preferably: a fifth placement groove is opened at the center of the top connecting flange, a circular limiting ring is fixedly provided on the top of the top connecting flange, the outer diameter of the limiting ring is consistent with the diameter of the third placement groove, the bearing seat is inserted into the outer side of the limiting ring, and the sealing bearing is against the top of the limiting ring.

[0015] Preferably: the top circumferential array of the top connecting flange is provided with four second threaded holes, the top of the bearing seat is provided with four fifth circular through holes corresponding to the positions of the four second threaded holes, each fifth circular through hole is provided with a sixth placement groove at the top, a second bolt is placed in each fifth circular through hole, and each second bolt is threadedly connected to its corresponding second threaded hole.

[0016] Preferably, an annular groove is formed at the lower end of the bearing seat, an annular sealing gasket is embedded in the annular groove, and the annular sealing gasket abuts against the upper end of the inner side wall of the housing.

[0017] To sum up, when the service life of the sealed bearing is reached, the utility model has the feature of removing the bearing seat through the flange connection between the bearing seat and the top connecting flange, and replacing the bearing seat and the sealed bearing of the same type without removing the entire deviation correction tension sensor, thereby maximizing the service life of the sensor strain body, increasing the mechanical life of the sensor strain body, and saving the use and production costs of the sensor strain body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0019] Figure 2 is a cross-sectional view of the embodiment.

[0020] In the figure, 1. housing; 2. sensor strain body; 3. bearing seat; 4. sealed bearing; 5. connecting shaft; 6. electrical connector; 7. deformation beam; 8. top connecting flange; 9. bottom connecting flange; 10. first flange; 11. sealing ring; 12. fixing block; 13. second flange; 14. first bolt; 15. baffle; 16. limiting ring; 17. second bolt; 18. annular sealing gasket. Implementation

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] like Figure 1-2 As shown, a deviation correction tension sensor includes a housing 1, a sensor strain body 2, a bearing seat 3, a sealing bearing 4, a connecting shaft 5, and an electrical connector 6;

[0024] The sensor strain body 2 is fixedly located inside the housing 1, the bearing seat 3 is fixedly located at the upper end inside the housing 1, the sealed bearing 4 is fixedly located inside the bearing seat 3, the bearing seat 3 is connected to the top flange of the sensor strain body 2, the electrical connector 6 is fixedly located at the bottom of the housing 1, the electrical connector 6 is electrically connected to the sensor strain body 2, one end of the connecting shaft 5 is fixedly connected to the sealed bearing 4, and the other end of the connecting shaft 5 is located outside the bearing seat 3 and is provided with an external thread. A second flange 13 is fixedly sleeved at the lower end of the outer wall of the housing 1, the driven wheel of the device is connected through the second flange 13, and the winding reel of the device is connected through the external thread of the connecting shaft 5.

[0025] The sensor strain body 2 includes two deformation beams 7, a top connection flange 8, and a bottom connection flange 9. Two sensing grooves are opened on the side wall of the deformation beam 7. The sensing grooves of the two deformation beams 7 are arranged opposite to each other. A strain gauge is provided in the sensing groove of each deformation beam 7. The four strain gauges are connected to each other to form a Wheatstone bridge. The electrical connector 6 is electrically connected to the four strain gauges.

[0026] The two deformation beams 7 are fixed between the top connecting flange 8 and the bottom connecting flange 9 . The bearing seat 3 is located on the top of the top connecting flange 8 . The bottom connecting flange 9 is connected to the inner flange of the housing 1 .

[0027] The shell 1 is a barrel-shaped cylinder with a U-shaped vertical cross-section. A first placement groove is opened at the bottom of the shell 1, a second placement groove is opened at the top wall inside the first placement groove, a first circular through hole is opened at the top wall inside the second placement groove, and a second circular through hole is opened at the center of the bottom connecting flange 9. The electrical connector 6 is inserted into the first circular through hole and the second circular through hole. A first flange 10 is provided on the electrical connector 6. The first flange 10 is located in the second placement groove. A sealing ring 11 is provided between the top of the first flange 10 and the top wall inside the second placement groove. The bottom of the first flange 10 is flush with the top wall inside the first placement groove. A fixing block 12 is connected to the flange in the first placement groove. A third circular through hole is opened at the center of the fixing block 12. The fixing block 12 is sleeved on the outer wall of the electrical connector 6, and the top of the fixing block 12 is abutted against the bottom of the first flange 10. The sealing ring 11 is compressed by abutting against the first flange 10, thereby fixing the electrical connector 6.

[0028] A cylindrical third placement groove is provided at the center of the bottom circle of the bearing seat 3, and the sealed bearing 4 is inserted into the third placement groove by interference fit. A fourth circular through-hole is provided on the top wall of the third placement groove, and the end of the connecting shaft 5 without an external thread passes through the fourth circular through-hole and is inserted into the sealed bearing 4 by interference fit. A first threaded hole is provided at the bottom of the connecting shaft 5, and a first bolt 14 is connected to the first threaded hole, and the first bolt 14 abuts against the sealed bearing 4. A circular fourth placement groove is provided at the center of the top circle of the bearing seat 3, and a circular baffle 15 is provided on the fixed sleeve of the connecting shaft 5. The thickness of the baffle 15 is twice the depth of the fourth placement groove. The baffle 15 is located in the fourth placement groove, and one-half of the baffle 15 protrudes out of the fourth placement groove. In order to prevent the winding roll from directly abutting against the bearing seat 3 and generating friction, a fifth placement groove is opened at the center of the top connecting flange 8, and the fifth placement groove is used to prevent the first bolt 14 from interfering with the top of the top connecting flange 8. A circular limiting ring 16 is fixed on the top of the top connecting flange 8. The outer diameter of the limiting ring 16 is consistent with the diameter of the third placement groove. The bearing seat 3 is inserted into the outside of the limiting ring 16, and the sealing bearing 4 abuts against the top of the limiting ring 16.

[0029] Four second threaded holes are opened in the top circumferential array of the top connecting flange 8, and four fifth circular through holes corresponding to the positions of the four second threaded holes are opened on the top of the bearing seat 3. A sixth placement groove is provided on the top of each fifth circular through hole, and a second bolt 17 is placed in each fifth circular through hole. Each second bolt 17 is threadedly connected to its corresponding second threaded hole, and the bolt head of each second bolt 17 is located in the sixth placement groove to prevent the second bolt 17 from affecting the operation of the equipment.

[0030] An annular groove is formed at the lower end of the bearing seat 3 , and an annular sealing gasket 18 is embedded in the annular groove. The annular sealing gasket 18 abuts against the upper end of the inner side wall of the housing 1 , and can be used to seal the interior of the housing 1 .

[0031] Specific implementation process:

[0032] When in use, the driven wheel of the device is connected through the second flange 13 of the housing 1, and the winding reel of the device is connected through the external thread of the connecting shaft 5. When the winding reel is working, the sensor strain body 2 senses the tension change and transmits the signal to the outside through the electrical connector 6;

[0033] When replacing, the four second bolts 17 inside the bearing seat 3 are removed, and the bearing seat 3 is pulled out, and the bearing seat 3 can be replaced.

[0034] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A deviation correction tension sensor, characterized in that: It comprises a housing (1), a sensor strain body (2), a bearing seat (3), a sealing bearing (4), a connecting shaft (5), and an electrical connector (6); The sensor strain body (2) is fixedly located inside the housing (1), the bearing seat (3) is fixedly located at the upper end inside the housing (1), the sealed bearing (4) is fixedly located inside the bearing seat (3), the bearing seat (3) is connected to the top flange of the sensor strain body (2), the electrical connector (6) is fixedly located at the bottom of the housing (1), the electrical connector (6) is electrically connected to the sensor strain body (2), one end of the connecting shaft (5) is fixedly connected to the sealed bearing (4), and the other end of the connecting shaft (5) is located outside the bearing seat (3) and is provided with an external thread.

2. The deviation-correcting tension sensor according to claim 1, characterized in that: The sensor strain body (2) comprises two deformation beams (7), a top connecting flange (8), and a bottom connecting flange (9), wherein the two deformation beams (7) are fixedly located between the top connecting flange (8) and the bottom connecting flange (9), the bearing seat (3) is located on the top of the top connecting flange (8), and the bottom connecting flange (9) is connected to the internal flange of the housing (1).

3. A deviation-correcting tension sensor according to claim 2, characterized in that: The shell (1) is a barrel-shaped cylinder with a U-shaped vertical cross-section. The bottom of the shell (1) is provided with a first placement groove, the top wall of the first placement groove is provided with a second placement groove, the top wall of the second placement groove is provided with a first circular through-hole, the center of the bottom connecting flange (9) is provided with a second circular through-hole, the electrical connector (6) is inserted into the first circular through-hole and the second circular through-hole, a first flange (10) is provided on the electrical connector (6), the first flange (10) is located in the second placement groove, a sealing ring (11) is provided between the top of the first flange (10) and the top wall of the second placement groove, the bottom of the first flange (10) is flush with the top wall of the first placement groove, the flange in the first placement groove is connected to a fixing block (12), the center of the fixing block (12) is provided with a third circular through-hole, the fixing block (12) is sleeved on the outer wall of the electrical connector (6), and the top of the fixing block (12) abuts against the bottom of the first flange (10).

4. The deviation-correcting tension sensor according to claim 3, characterized in that: A second flange (13) is fixedly sleeved on the lower end of the outer wall of the housing (1).

5. The deviation-correcting tension sensor according to claim 2, characterized in that: A cylindrical third placement groove is provided at the center of the bottom circle of the bearing seat (3), the sealed bearing (4) is inserted into the third placement groove by interference fit, a fourth circular through hole is provided on the top wall of the third placement groove, an end of the connecting shaft (5) without an external thread passes through the fourth circular through hole and is inserted into the sealed bearing (4) by interference fit, a first threaded hole is provided at the bottom of the connecting shaft (5), a first bolt (14) is threadedly connected to the first threaded hole, and the first bolt (14) abuts against the sealed bearing (4).

6. A deviation-correcting tension sensor according to claim 5, characterized in that: A fourth circular placement groove is provided at the center of the top of the bearing seat (3); a circular baffle (15) is provided on the fixing sleeve of the connecting shaft (5); the thickness of the baffle (15) is twice the depth of the fourth placement groove; the baffle (15) is located in the fourth placement groove; and one-half of the baffle (15) protrudes out of the fourth placement groove.

7. The deviation-correcting tension sensor according to claim 5, characterized in that: A fifth placement groove is provided at the center of the top connecting flange (8), a circular limiting ring (16) is fixedly provided on the top of the top connecting flange (8), the outer diameter of the limiting ring (16) is consistent with the diameter of the third placement groove, the bearing seat (3) is inserted into the outer side of the limiting ring (16), and the sealing bearing (4) is abutted against the top of the limiting ring (16).

8. The deviation-correcting tension sensor according to claim 7, characterized in that: The top circumferential array of the top connecting flange (8) is provided with four second threaded holes, the top of the bearing seat (3) is provided with four fifth circular through holes corresponding to the positions of the four second threaded holes, each fifth circular through hole is provided with a sixth placement groove at the top, a second bolt (17) is placed in each fifth circular through hole, and each second bolt (17) is threadedly connected to the second threaded hole corresponding thereto.

9. The deviation-correcting tension sensor according to claim 1, characterized in that: An annular groove is formed at the lower end of the bearing seat (3), an annular sealing gasket (18) is embedded in the annular groove, and the annular sealing gasket (18) abuts against the upper end of the inner side wall of the housing (1).

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