Screw fastener tightening force measuring device

Abstract

The utility model relates to the technical field of measuring devices, and discloses a screw fastener tightening force measuring device which comprises a torque wrench and a measuring positioning head, one end of the torque wrench is provided with the measuring positioning head, and the outer surface of the torque wrench is provided with a display screen. A torque wrench is fixed on the measuring positioning head, a wrench grip is fixed at one end, far away from the measuring positioning head, of the torque wrench, a connecting frame is fixed on the side edge of the wrench grip, a rotating sleeve is rotatably connected in the connecting frame, and an auxiliary grip is fixed on the outer surface of the rotating sleeve. The screw fastener tightening force measuring device is simple in structure and convenient to operate, more labor is saved during screwing, the problems that an existing screw fastener tightening force measuring device is strenuous during measurement and the measuring accuracy is easily affected due to insufficient force are solved, the measuring device is more convenient and labor-saving to operate during use, and the situation that the measuring accuracy is affected due to insufficient force is avoided.

Description

Technical Field

[0001] The utility model application relates to the technical field of measuring devices, in particular to a device for measuring the tightening force of a screw fastener. Background Art

[0002] For screws in mechanical equipment, the size of the tightening force directly affects their performance and life. In order to ensure the tightening force of the screws, they will be tested with a torque wrench. The torque wrench is a tool specially used to tighten screws. It has a torque sensor inside, which can judge whether the tightening force of the screw meets the requirements through the reading.

[0003] When measuring with a torque wrench, the screws need to be tightened manually. However, since the torque wrench can only be held in the same direction with both hands when in use, it is more laborious to tighten, even if both hands are held at the same time, and the operator may lack strength, resulting in reduced measurement accuracy. Summary of the invention

[0004] In order to solve the problem that the existing screw fastener tightening force measuring device is relatively laborious during measurement and the measurement accuracy is easily affected by insufficient force, the utility model provides a screw fastener tightening force measuring device to solve the above problems.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for measuring the tightening force of a screw fastener comprises a torque wrench and a measuring positioning head, wherein the measuring positioning head is arranged at one end of the torque wrench, a display screen is arranged on the outer surface of the torque wrench, a wrench handle is fixed to the end of the torque wrench away from the measuring positioning head, and a connecting frame is fixed to the side of the wrench handle, a rotating sleeve is rotatably connected inside the connecting frame, and an auxiliary handle is fixed to the outer surface of the rotating sleeve.

[0007] Furthermore, the connecting frame and the rotating sleeve are both arranged in a horizontally placed "U" shape, the anti-slip rubber sleeve is located on the bottom surface of the rotating sleeve, and the side surface of the rotating sleeve above the anti-slip rubber sleeve and away from the wrench handle are both arranged in a horizontal shape.

[0008] Furthermore, a support rod is fixed inside the connecting frame, a rotating groove cooperating with the support rod is opened inside the rotating sleeve, a limiting block is fixed on the outer surface of the support rod, a rotating block is fixed on the inner wall of the rotating groove and the opposite auxiliary handle side, and a plurality of springs are equidistantly arranged inside the rotating groove between the rotating block and the limiting block, and both ends of the springs are respectively fixed on the rotating block and the limiting block.

[0009] Furthermore, the outer surface of the auxiliary handle is wrapped and fixed with a non-slip rubber sleeve, the height of the non-slip rubber sleeve is equal to the height of the wrench handle, and the arc surface of the rotating sleeve is slidably fitted with the inner wall of the connecting frame.

[0010] Furthermore, the inner side of the rotating block is configured to be an arc shape that matches the outer surface of the support rod, and the outer surface of the limiting block is configured to be an arc shape that matches the outer side wall of the rotating groove.

[0011] Furthermore, the sum of the arc lengths of the rotating block and the limiting block is less than three quarters of the circumference of the rotating groove, and the widths of the rotating block and the limiting block are both equal to the width of the rotating groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, an auxiliary grip is used to assist in tightening, which is convenient for two-handed operation and saves effort when twisting. This solves the problem that the existing screw fastener tightening force measuring device is more laborious during measurement and is easily affected by insufficient force to affect the measurement accuracy. The measuring device is more convenient and labor-saving to operate when in use, and the measurement accuracy is avoided to be affected by insufficient force.

[0014] 2. In the utility model, through the rebound design of the auxiliary grip, after use, the auxiliary grip can be loosened, and the rotating block can drive the auxiliary grip to rotate to fit with the torque handle under the pull of the spring, so that the auxiliary grip can be stored, making it convenient to carry the torque wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 is a schematic front view of the structure of a measuring device according to an embodiment of the present application;

[0017] Figure 2 yes Figure 1 A schematic front view of the structure of the measuring device in the illustrated embodiment when in use;

[0018] Figure 3 yes Figure 1 A schematic front cross-sectional view of a local structure in the illustrated embodiment.

[0019] The meanings of the reference numerals in the figure are: 1. Torque wrench; 2. Measuring and positioning head; 3. Display screen; 4. Wrench handle; 5. Connecting frame; 6. Rotating sleeve; 7. Auxiliary handle; 8. Anti-slip rubber sleeve; 9. Support rod; 10. Rotating groove; 11. Fixed block; 12. Limit block; 13. Spring. DETAILED DESCRIPTION

[0020] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions 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 embodiments described below 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 are within the scope of protection of this application.

[0021] Reference Figure 1 , Figure 2 and Figure 3 A device for measuring the tightening force of a screw fastener comprises a torque wrench 1 and a measuring and positioning head 2. The measuring and positioning head 2 is arranged at one end of the torque wrench 1, and a display screen 3 is arranged on the outer surface of the torque wrench 1. A wrench handle 4 is fixed to the end of the torque wrench 1 away from the measuring and positioning head 2, and a connecting frame 5 is fixed to the side of the wrench handle 4. A rotating sleeve 6 is rotatably connected inside the connecting frame 5. Both the connecting frame 5 and the rotating sleeve 6 are arranged in a horizontally placed "U" shape. An anti-slip rubber sleeve 8 is located on the bottom surface of the rotating sleeve 6. The side of the rotating sleeve 6 above the anti-slip rubber sleeve 8 and away from the side of the wrench handle 4 are arranged in a horizontal shape. An auxiliary grip 7 is fixed on the outer surface of the rotating sleeve 6. The outer surface of the auxiliary grip 7 is wrapped and fixed with an anti-slip rubber sleeve 8. The height of the anti-slip rubber sleeve 8 is equal to the height of the wrench handle 4. The arc surface of the rotating sleeve 6 slides and fits with the inner wall of the connecting frame 5.

[0022] Specifically, when measuring, first adjust the adjustable handle of the wrench to the required torque value, tighten the screw with the wrench, and when the wrench sensor makes a "ticking" sound, it means that the screw has been tightened to the predetermined torque force. Record the tightening force value of the screw according to the indication of the wrench. When twisting, pull the auxiliary handle 7 so that the auxiliary handle 7 rotates to be perpendicular to the wrench handle 4 with the cooperation of the rotating sleeve 6. With the cooperation of the shape of the rotating sleeve 6, the auxiliary handle 7 cannot continue to rotate outward after being rotated to be perpendicular to the wrench handle 4. Then, you can hold the wrench handle 4 and the anti-slip rubber sleeve 8 with both hands respectively, and twist the torque wrench 1.

[0023] As an optimization solution, Figure 3As shown, a support rod 9 is fixed inside the connecting frame 5, a rotating groove 10 cooperating with the support rod 9 is opened inside the rotating sleeve 6, a limit block 12 is fixed on the outer surface of the support rod 9, a rotating block 11 is fixed on the inner wall of the rotating groove 10 and the opposite auxiliary grip 7 side, the sum of the arc lengths of the rotating block 11 and the limit block 12 is less than three quarters of the circumference of the rotating groove 10, the widths of the rotating block 11 and the limit block 12 are both equal to the width of the rotating groove 10, the inner side of the rotating block 11 is set to an arc shape cooperating with the outer surface of the support rod 9, the outer surface of the limit block 12 is set to an arc shape cooperating with the outer side wall of the rotating groove 10, and a plurality of springs 13 are equidistantly arranged inside the rotating groove 10 between the rotating block 11 and the limit block 12, and the two ends of the spring 13 are respectively fixed on the rotating block 11 and the limit block 12.

[0024] Specifically, when the auxiliary handle 7 needs to be rotated, the rotating sleeve 6 drives the rotating block 11 to rotate. When the rotating block 11 rotates, the spring 13 is stretched and rotated to abut against the limit block 12. The auxiliary handle 7 can be held to assist in twisting the torque wrench 1. After the twisting measurement is completed, the anti-slip rubber sleeve 8 is loosened. At this time, the tension on the spring 13 is released. Under the pushing action of the spring 13, the auxiliary handle 7 is rotated to abut against the torque wrench 1, and the storage of the auxiliary handle 7 can be completed.

[0025] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0026] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for measuring the tightening force of a screw fastener, comprising a torque wrench (1) and a measuring positioning head (2), characterized in that: A measuring and positioning head (2) is provided at one end of the torque wrench (1), a display screen (3) is provided on the outer surface of the torque wrench (1), a wrench handle (4) is fixed at the end of the torque wrench (1) away from the measuring and positioning head (2), a connecting frame (5) is fixed on the side of the wrench handle (4), a rotating sleeve (6) is rotatably connected inside the connecting frame (5), and an auxiliary handle (7) is fixed on the outer surface of the rotating sleeve (6).

2. The screw fastener tightening force measuring device according to claim 1, characterized in that: The outer surface of the auxiliary handle (7) is wrapped and fixed with an anti-skid rubber sleeve (8), the height of the anti-skid rubber sleeve (8) is equal to the height of the wrench handle (4), and the arc surface of the rotating sleeve (6) is slidably fitted with the inner wall of the connecting frame (5).

3. The screw fastener tightening force measuring device according to claim 2, characterized in that: The connection frame (5) and the rotating sleeve (6) are both arranged in a horizontal "U" shape, the anti-slip rubber sleeve (8) is located on the bottom surface of the rotating sleeve (6), and the side surface of the rotating sleeve (6) above the anti-slip rubber sleeve (8) and away from the wrench handle (4) are both arranged in a horizontal shape.

4. The screw fastener tightening force measuring device according to claim 3, characterized in that: A support rod (9) is fixed inside the connection frame (5), a rotation groove (10) cooperating with the support rod (9) is provided inside the rotation sleeve (6), a limit block (12) is fixed on the outer surface of the support rod (9), a rotation block (11) is fixed on the inner wall of the rotation groove (10) and the side opposite to the auxiliary handle (7), a plurality of springs (13) are equidistantly arranged inside the rotation groove (10) between the rotation block (11) and the limit block (12), and two ends of the spring (13) are respectively fixed on the rotation block (11) and the limit block (12).

5. The screw fastener tightening force measuring device according to claim 4, characterized in that: The inner side of the rotating block (11) is arranged in an arc shape that matches the outer surface of the support rod (9), and the outer surface of the limiting block (12) is arranged in an arc shape that matches the outer side wall of the rotating groove (10).

6. The screw fastener tightening force measuring device according to claim 5, characterized in that: The sum of the arc lengths of the rotating block (11) and the limiting block (12) is less than three quarters of the circumference of the rotating groove (10), and the widths of the rotating block (11) and the limiting block (12) are both equal to the width of the rotating groove (10).

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