Torque wrench sensor

Abstract

The utility model discloses a torque wrench sensor, and belongs to the technical field of sensors. The device mainly comprises a connecting clamp; the torsion end is mounted at one end of the connecting clamp; the holding end is mounted at one end, far away from the torsion end, of the connecting clamp; the sensor is installed at the lower end of the torsion end, and the sensor comprises an elastic body installed at the lower end of the torsion end; the strain gauge is mounted on the inner side of the elastic body; the PCBA board is installed at the position, close to the strain gauge, of the inner side of the elastomer. And the aviation plug is mounted on the outer side of the elastic body. According to the torque wrench sensor, through the arrangement of the sensor, the torque wrench can monitor the pre-tightening force of a twisted object, so that the pre-tightening force is controlled within the force value range of the twisted object, and then the service life of the twisted object is conveniently controlled.

Description

Technical Field

[0001] The present application relates to the field of sensor technology, and in particular to a torque wrench sensor. Background Art

[0002] Torque wrenches are widely used in assembly and maintenance of mechanical engineering to tighten or loosen threaded fasteners, such as bolts and nut connections. For high-precision machinery, threaded fasteners must be tightened or loosened according to the prescribed operating procedures under the preset torque level. Improper manual operating torque may inadvertently cause damage or destruction to threaded fasteners or threaded holes, and may therefore cause damage to machine functions and operating accuracy.

[0003] A torque wrench sensor is a sensor used to measure the torque applied by a torque wrench. It is usually based on the working principle of a strain gauge (resistance strain gauge) to convert mechanical deformation into an electrical signal, thereby achieving accurate measurement of torque.

[0004] However, in actual use, existing torque wrenches cannot monitor the preload force of the torqued object and can only apply force based on feeling. If the force is too small, the torqued object cannot be twisted, and if the force is too large, the torqued object may be damaged, and the service life of the torqued object is difficult to control.

[0005] Therefore, it is necessary to provide a torque wrench sensor to solve the above problems.

[0006] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0007] Based on the above problems existing in the prior art, the problem to be solved by the present application is to provide a torque wrench sensor, which solves the problem that the existing torque wrench cannot monitor the preload force of the torqued object, resulting in damage to the torqued object and difficulty in controlling the service life of the torqued object.

[0008] The technical solution adopted by the present application to solve the technical problem is: a torque wrench sensor, comprising:

[0009] Connecting clip;

[0010] A torque end, which is mounted on one end of the connecting clamp and is used to stably connect with the twisted object;

[0011] A gripping end, which is mounted on an end of the connecting clamp away from the torque end, and is used to provide torque processing for the torque wrench;

[0012] A sensor is installed at the lower end of the torque end, and is used to detect the force applied to the wrench during the twisting process. The sensor includes:

[0013] an elastic body mounted on the lower end of the torque end;

[0014] A strain gauge installed on the inner side of the elastic body;

[0015] A PCBA board, which is installed inside the elastic body and close to the strain gauge;

[0016] An aviation plug is installed on the outside of the elastic body.

[0017] Furthermore, the holding end includes an extension rod fixedly arranged with the connecting clamp, a threaded hole is fixedly opened on the extension rod, and a force arm is threadedly installed on the extension rod.

[0018] Furthermore, a handle is fixedly provided on one end of the force arm away from the extension rod.

[0019] Furthermore, the torque end includes a base fixedly arranged at an end away from the gripping end, a hook is fixedly arranged on the upper end of the base, and a quick-release assembly is fixedly arranged on the upper end of the hook.

[0020] Furthermore, the quick-release assembly includes a sleeve detachably arranged on the upper end of the square falcon, a slot is provided at the lower end of the sleeve, the slot is adapted to the square falcon, and the upper end of the sleeve is arranged as a hexagonal socket.

[0021] Furthermore, a through hole is fixedly opened on the square, a small hole is opened at the lower end of the sleeve, and a latch is inserted into the through hole opened on the square;

[0022] An O-ring is sleeved on the small hole at the lower end of the sleeve.

[0023] The beneficial effect of the present application is that the present application provides a torque wrench sensor, which, by setting a sensor, enables the torque wrench to monitor the preload force of the torqued object, thereby controlling the preload force within the force value range of the torqued object, thereby facilitating the control of the service life of the torqued object.

[0024] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 This is an overall schematic diagram of a torque wrench sensor in this application;

[0027] Figure 2 for Figure 1 Schematic diagram of the middle grip end;

[0028] Figure 3 for Figure 1 Schematic diagram of the sensor;

[0029] Figure 4 for Figure 1 Schematic diagram of the middle torque end;

[0030] Among them, the reference numerals in the figure are:

[0031] 1. Connecting clip; 2. Grip end; 3. Torque end; 4. Sensor; 21. Extension rod; 23. Lever; 24. Handle; 41. Elastomer; 42. PCBA board; 43. Strain gauge; 44. Aviation plug; 32. Base; 33. Sleeve; 34. Pin; 35. Square falcon; 36. O-ring. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0034] like Figure 1 and Figure 4 As shown, the present application provides a torque wrench sensor, comprising a connecting clamp 1, and a torque end 3 fixedly arranged at one end of the connecting clamp 1, the torque end 3 is suitable for being stably connected to a torqued object, and a gripping end 2 is fixedly arranged at the other end of the connecting clamp 1 away from the torque end 3, the gripping end 2 is suitable for pushing the gripping end 2 to provide torque for the torque wrench after the torque end 3 is stably connected to the torqued object;

[0035] Continue to refer Figure 4 The torque end 3 includes a platform (not shown) fixed to the connecting clamp 1, a base 32 is fixedly provided on the upper end of the platform, and a square falcon 35 is fixedly provided on the upper end of the base 32, and the square falcon 35 is suitable for connecting with the twisted object;

[0036] When the twisted object needs to be pre-tightened, the square falcon 35 is connected to the twisted object, and then rotated by the gripping end 2 to facilitate the pre-tightening operation of the twisted object;

[0037] In order to conveniently monitor whether the torque is within the preload force range of the twisted object, a sensor 4 is fixedly arranged at the lower end of the platform. The sensor 4 is suitable for detecting and transmitting the force of the wrench during the twisting process while pushing the gripping end 2 to provide torque after the square falcon 35 is connected to the twisted object, so as to more accurately detect the preload force of the twisted object and detect and transmit the force of the wrench during the twisting process;

[0038] like Figure 1 and Figure 3 As shown, the sensor 4 includes an elastic body 41 fixedly connected to the connecting clamp 1, and the elastic body 41 is suitable for sensing and transmitting the strain generated by the torque;

[0039] The elastic body 41 is provided with a mounting cavity (not shown in the figure) inside which a strain gauge 43 is fixedly provided and attached to the inside of the mounting cavity. When the elastic member 4 is subjected to force, a slight deformation will occur. At this time, the strain gauge 43 can sense the deformation and convert it into an electrical signal, thereby realizing the detection and measurement of the torque.

[0040] At the same time, a mounting groove (not shown in the figure) is fixedly provided in the elastic body 41 near the strain gauge 43, and a PCBA board 42 is fixedly provided in the mounting groove. The PCBA board 42 receives the electrical signal from the strain gauge 43 and performs further processing and conversion.

[0041] An aviation plug 44 is fixedly arranged on the outside of the elastic body 41, and the aviation plug 44 is used for communication or data transmission with an external device or system;

[0042] When the torque end 3 is fixed to the twisted object, the gripping end 2 is pushed to provide torque, and the elastic body 41 in the sensor 4 is deformed. At the same time, the strain gauge 43 generates corresponding strain and converts it into an electrical signal, which is then further converted through the PCBA board 42. The force condition of the wrench during the twisting process is detected and transmitted using the aviation plug 44, thereby more accurately detecting the preload force of the twisted object.

[0043] At the same time, in order to enable the torque end 3 to disassemble different torqued objects during detection, a quick-release assembly is fixedly arranged on the upper end of the square falcon 35, and the quick-release assembly is suitable for realizing quick connection and disassembly of the torque wrench during use;

[0044] The quick release assembly includes a sleeve 33 detachably arranged on the square falcon 35, and a card slot (not shown in the figure) is opened at the lower end of the sleeve 33, and the card slot is adapted to the square falcon 35. At the same time, the upper end of the sleeve 33 is a hexagonal setting, and the upper end of the sleeve 33 is a contact end, which is suitable for direct contact with the twisted object;

[0045] A through hole (not marked in the figure) is formed on the square 35, and a small hole (not marked in the figure) is formed on the lower end of the sleeve 33. A latch 34 is inserted into the through hole formed on the square 35. The latch 34 passes through the through hole formed on the square 35 and the small hole at the lower end of the sleeve 33, so as to achieve a close fit and a stable connection between the sleeve 33 and the square 35.

[0046] At the same time, an O-ring 36 is sleeved on the small hole at the lower end of the sleeve 33, and the O-ring 36 is used to fix the position of the latch 34 to prevent the latch 34 from falling off or loosening during the operation of the sleeve 33;

[0047] It should be noted that, after use, the O-ring 36 can be removed to expose the latch 34, and then the latch 34 can be pulled out to remove the sleeve 33, so that the torque wrench can be quickly connected and disassembled during use;

[0048] like Figure 1-Figure 2 As shown, the gripping end 2 includes an extension rod 21 fixedly arranged with the connecting clamp 1 to facilitate operation by the staff;

[0049] At the same time, in order to twist the extension rod 21 more successfully, a threaded hole (not shown in the figure) is opened at one end of the extension rod 21 away from the connecting clamp 1, and a removable threaded arm 23 is installed at the threaded hole;

[0050] At the same time, a handle 24 is fixedly provided at one end of the force arm 23 away from the extension rod 21, so that the extension rod 21 can be operated more labor-savingly through the force arm 23 through the handle 24 to twist the twisted object, and because the force arm 23 is detachable, the force arm 23 can be replaced to obtain force arms 23 of different lengths.

[0051] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A torque wrench sensor, characterized in that: include: Connecting clip (1); A torque end (3), the torque end (3) being mounted on one end of the connecting clamp (1), the torque end (3) being used to establish a stable connection with a twisted object; A gripping end (2), the gripping end (2) being mounted on an end of the connecting clamp (1) away from the torque end (3), the gripping end (2) being used to provide torque processing for the torque wrench; A sensor (4), the sensor (4) being mounted at the lower end of the torque end (3), the sensor (4) being used to detect the force applied to the wrench during the twisting process, the sensor (4) comprising: an elastic body (41), the elastic body (41) being mounted on the lower end of the torque end (3); a strain gauge (43), the strain gauge (43) being mounted on the inner side of the elastic body (41); A PCBA board (42), the PCBA board (42) being mounted on an inner side of the elastic body (41) at a position close to the strain gauge (43); An aviation plug (44) is installed on the outside of the elastic body (41).

2. A torque wrench sensor according to claim 1, characterized in that: The gripping end (2) comprises an extension rod (21) fixedly mounted on the connecting clamp (1), a threaded hole being fixedly opened on the extension rod (21), and a force arm (23) being threadedly mounted on the extension rod (21).

3. A torque wrench sensor according to claim 2, characterized in that: A handle (24) is fixedly provided at one end of the force arm (23) away from the extension rod (21).

4. A torque wrench sensor according to claim 1, characterized in that: The torque end (3) comprises a base (32) fixedly arranged at an end away from the gripping end (2), a square falcon (35) fixedly arranged at the upper end of the base (32), and a quick-release assembly fixedly arranged at the upper end of the square falcon (35).

5. A torque wrench sensor according to claim 4, characterized in that: The quick-release assembly comprises a sleeve (33) detachably arranged on the upper end of the square falcon (35), a slot is provided at the lower end of the sleeve (33), the slot is adapted to fit the square falcon (35), and the upper end of the sleeve (33) is provided with a hexagonal socket.

6. A torque wrench sensor according to claim 5, characterized in that: The square falcon (35) is fixedly provided with a through hole, the lower end of the sleeve (33) is provided with a small hole, and a latch (34) is inserted into the through hole provided on the square falcon (35); An O-ring (36) is sleeved on the small hole at the lower end of the sleeve (33).

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