Fastener high preload connection pretightening force measuring device

Abstract

The utility model relates to the technical field of fastener pretightening force measurement, in particular to a fastener high-preload connection pretightening force measuring device, which is characterized in that when the fastener high-preload connection pretightening force measuring device is used, a mounting seat assembly matched with a bolt to be measured is selected to be mounted on a support frame assembly, and the bolt to be measured is placed on the mounting seat assembly; when the pre-warning force of the to-be-detected bolt is detected, the pre-warning force of the to-be-detected bolt to the mounting base assembly is detected, then the to-be-detected bolt is sleeved with the force sensor assembly, then the to-be-detected nut is in threaded connection with the to-be-detected bolt, and the to-be-detected nut is tightened, so that the pre-warning force of the to-be-detected bolt to the mounting base assembly is detected by the force sensor assembly. The bolt to be detected only needs to be simply placed on the mounting seat assembly, so that continuous insertion of the round hole is avoided, and the detection efficiency is improved; comprising a test board, and further comprises a support frame assembly, a mounting seat assembly and a force transducer assembly, the support frame assembly is mounted at the top end of the test board, the force transducer assembly is placed on the support frame assembly, and the mounting seat assembly is detachably mounted on the support frame assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fastener pre-tightening force measurement, in particular to high pre-load connection pre-tightening force measuring device of fastener. BACKGROUND

[0002] Bolts and nuts are common connecting pieces, usually used to tightly connect two or more objects together, the bolt has external threads, and the nut has internal threads, both of which are fastened by thread cooperation, the bolt and nut belong to the category of fasteners due to their connection and fixing functions.

[0003] In the prior art, the patent document with the publication number CN213985483U discloses a kind of test device for measuring high-performance fastener pre-tightening force, including test end cover, bolt, nut, gasket and pressure sensor, the pressure sensor is sleeved on bolt, located between gasket and test end cover, the test end cover is installed on pneumatic chuck, the pneumatic chuck is installed on the output shaft of numerical control protractor.

[0004] During use, in order to detect the pressure of locking nut on test end cover, i.e. the pre-warning force of locking bolt, it is necessary to pass the locking bolt through the round hole of test end cover, when the pre-warning force of multiple locking bolts needs to be detected, the convenience of passing through the round hole is poor. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a kind of high pre-load connection pre-tightening force measuring device of fastener to improve detection efficiency.

[0006] The fastener high pre-load connection pre-tightening force measuring device of the utility model, including test table, still include support frame assembly, mounting seat assembly and force sensor assembly, the support frame assembly is installed at test table top, the force sensor assembly is placed on support frame assembly, the mounting seat assembly can be detachably installed on support frame assembly;When using, the mounting seat assembly suitable for the bolt to be measured is installed on support frame assembly, the bolt to be measured is placed on mounting seat assembly, then the force sensor assembly is sleeved on the bolt to be measured, then the nut to be measured is threadedly connected with the bolt to be measured, and the nut to be measured is tightened, so that the force sensor assembly detects the pre-warning force of the bolt to be measured on the mounting seat assembly, when the pre-warning force of multiple bolts to be measured needs to be detected, the bolt to be measured only needs to be simply placed on the mounting seat assembly, avoiding continuous insertion into the round hole, and improving detection efficiency.

[0007] Preferably, the support frame assembly comprises support rods, a first notch, sliding grooves, a support plate and a positioning frame, the support plate is installed at the top end of the test table through a plurality of groups of support rods, the top end of the support plate is provided with the positioning frame, the front end of the support plate is provided with the first notch, and the left and right ends of the first notch are respectively provided with a group of sliding grooves; the positioning frame positions the force sensor assembly, after selecting the mounting seat assembly matched with the bolt to be tested, the mounting seat assembly is slid into the first notch under the cooperation of the two groups of sliding grooves, and the convenience and flexibility of detection are improved.

[0008] Preferably, the force sensor assembly comprises an instrument display, a ring-shaped force sensor and a transmission line, the input end of the instrument display is connected with the first end of the transmission line, and the second end of the transmission line is detachably connected with the output end of the ring-shaped force sensor; in use, the ring-shaped force sensor matched with the bolt to be tested is connected with the second end of the transmission line, then the instrument display is placed at the top end of the support plate under the cooperation of the positioning frame, the bolt to be tested is placed on the mounting seat assembly, then the ring-shaped force sensor is sleeved on the bolt to be tested, then the nut to be tested is threadedly connected with the bolt to be tested, and the nut to be tested is tightened, so that the ring-shaped force sensor detects the early warning force of the bolt to be tested, and the detection flexibility is improved.

[0009] Preferably, the mounting seat assembly comprises a mounting seat body, a second notch, sliding blocks, limiting plates, threaded grooves and first bolts, a group of sliding blocks is arranged at the left and right ends of the mounting seat body, a group of second notches is arranged in the front end of the mounting seat body, a group of limiting plates is arranged at the left and right ends of the mounting seat body, a circular hole is arranged on each limiting plate, and a group of first bolts is arranged in each circular hole; the front end of the support plate is provided with two groups of threaded grooves, and the first bolts are threadedly connected with the threaded grooves; the support plate matched with the bolt to be tested is selected through the second notches, so that the two groups of sliding blocks of the support plate are slid into a group of sliding grooves, then the first bolts are threaded through the circular holes and threadedly connected with the threaded grooves, then the nut to be tested is pressed downward, so that the screw rod part of the bolt to be tested enters the second notch, then the ring-shaped force sensor is sleeved on the screw rod part of the bolt to be tested, the nut to be tested is threadedly connected with the bolt to be tested, and after detection is completed, the bolt to be tested is directly taken out from the second notch horizontally, and the convenience is improved.

[0010] Preferably, it also comprises a first handle, and the top end of the instrument display is provided with the first handle; the instrument display is moved by the first handle, and the convenience is improved.

[0011] Preferably, it also comprises adjustable feet, and a group of adjustable feet is arranged at each corner of the bottom end of the test table; the four groups of adjustable feet stably support the test table in cooperation, and the stability is improved.

[0012] Preferably, the annular flat washer is sleeved on the outer side of the first bolt, and the second handle is arranged at the front end of the mounting seat body; the first bolt increases the contact area with the limiting plate under the cooperation of the annular flat washer, thereby improving the mounting firmness; and the second handle is used by the staff to move and take the mounting seat body, thereby improving the convenience.

[0013] Compared with the prior art, the utility model has the advantages that: when in use, the mounting seat assembly matched with the to-be-tested bolt is installed on the support frame assembly, the to-be-tested bolt is placed on the mounting seat assembly, then the force sensor assembly is sleeved on the to-be-tested bolt, then the to-be-tested nut is screwed with the to-be-tested bolt, and the to-be-tested nut is tightened, so that the force sensor assembly detects the early warning force of the to-be-tested bolt on the mounting seat assembly; when early warning force detection needs to be performed on multiple groups of to-be-tested bolts, the to-be-tested bolts only need to be simply placed on the mounting seat assembly, so that the detection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the isometric structure schematic view of the utility model;

[0015] Figure 2 It is the explosion structure schematic view of the utility model;

[0016] Figure 3 It is the enlarged structure schematic view of the support plate and the positioning frame and the like structure;

[0017] Figure 4 It is the enlarged structure schematic view of the annular force sensor and the instrument display and the like structure;

[0018] Figure 5 It is the enlarged structure schematic view of the mounting seat body and the first bolt and the like structure.

[0019] Markings in the drawings: 1, test table; 2, support rod; 3, first notch; 4, sliding groove; 5, instrument display; 6, annular force sensor; 7, transmission line; 8, mounting seat body; 9, second notch; 10, sliding block; 11, limiting plate; 12, threaded groove; 13, first bolt; 14, first handle; 15, adjustable foot; 16, annular flat washer; 17, second handle; 18, support plate; 19, positioning frame; 20, to-be-tested bolt; 21, to-be-tested nut. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] Embodiment 1

[0022] As Figure 1 and Figure 2 shown, the fastener high preload connection pre-tightening force measuring device of the utility model, including test bench 1, still include support frame assembly, mounting seat assembly and force sensor assembly, test bench 1 top end is equipped with support frame assembly, force sensor assembly is placed on support frame assembly, mounting seat assembly can be detachably installed on support frame assembly;

[0023] As Figure 3 shown, support frame assembly includes support rod 2, one notched 3, sliding slot 4, support plate 18 and positioning frame 19, support plate 18 is installed on test bench 1 top end by multiple groups of support rod 2, support plate 18 top end is provided with positioning frame 19, support plate 18 front end is provided with one notched 3, and one notched 3's left and right two ends are provided with a group of sliding slot 4 respectively;

[0024] As Figure 2 and Figure 5 shown, mounting seat assembly includes mounting seat body 8, two notched 9, sliding block 10, limiting plate 11, threaded groove 12 and one bolt 13, mounting seat body 8's left and right two ends are provided with a group of sliding block 10 respectively, mounting seat body 8's front end is provided with a group of two notched 9, and mounting seat body 8's left and right two ends are provided with a group of limiting plate 11 respectively, each group of limiting plate 11 is provided with round hole respectively, and each group of round hole is provided with a group of one bolt 13 respectively, and support plate 18 front end is provided with two groups of threaded groove 12, and one bolt 13 is connected with threaded groove 12 in screw thread.

[0025] In the embodiment, the support plate 18 that two notched 9 is adapted with the bolt 20 to be measured is selected, the two groups of sliding block 10 of support plate 18 are slid into a group of sliding slot 4 respectively, then one bolt 13 is threaded through round hole and is connected with threaded groove 12 in screw thread, then the nut of bolt 20 to be measured is made downward, the screw rod part of bolt 20 to be measured is entered into two notched 9, then force sensor assembly is sleeved on the screw rod part of bolt 20 to be measured, and the nut 21 to be measured is connected with bolt 20 to be measured in screw thread, after detection, bolt 20 to be measured is directly taken out from two notched 9 horizontally, and the detection efficiency is improved.

[0026] Embodiment 2

[0027] As Figure 1 and Figure 2 shown, the fastener high preload connection pre-tightening force measuring device of the utility model, including test bench 1, still include support frame assembly, mounting seat assembly and force sensor assembly, test bench 1 top end is equipped with support frame assembly, force sensor assembly is placed on support frame assembly, mounting seat assembly can be detachably installed on support frame assembly;

[0028] AsFigure 3 As shown in the drawings, the support frame assembly comprises support rods 2, a first notch 3, sliding grooves 4, a support plate 18 and a positioning frame 19. The support plate 18 is installed at the top end of the test bench 1 through a plurality of groups of support rods 2. The top end of the support plate 18 is provided with the positioning frame 19. The front end of the support plate 18 is provided with the first notch 3. The left and right ends of the first notch 3 are respectively provided with a group of sliding grooves 4.

[0029] As shown in the drawings, the mounting seat assembly comprises a mounting seat body 8, a second notch 9, a sliding block 10, a limiting plate 11, a threaded groove 12 and a first bolt 13. The left and right ends of the mounting seat body 8 are respectively provided with a group of sliding blocks 10. The front end of the mounting seat body 8 is internally provided with a group of second notches 9. The left and right ends of the mounting seat body 8 are respectively installed with a group of limiting plates 11. Each group of limiting plates 11 is respectively provided with a circular hole. Each group of circular holes is respectively provided with a group of first bolts 13. The front end of the support plate 18 is provided with two groups of threaded grooves 12. The first bolt 13 is threadedly connected with the threaded groove 12. Figure 2 Figure 5 As shown in the drawings, the force sensor assembly comprises an instrument display 5, an annular force sensor 6 and a transmission line 7. The input end of the instrument display 5 is connected with the first end of the transmission line 7. The second end of the transmission line 7 is detachably connected with the output end of the annular force sensor 6.

[0030] As shown in the drawings, the force sensor assembly comprises an instrument display 5, an annular force sensor 6 and a transmission line 7. The input end of the instrument display 5 is connected with the first end of the transmission line 7. The second end of the transmission line 7 is detachably connected with the output end of the annular force sensor 6. Figure 2 Figure 4 As shown in the drawings, the force sensor assembly comprises an instrument display 5, an annular force sensor 6 and a transmission line 7. The input end of the instrument display 5 is connected with the first end of the transmission line 7. The second end of the transmission line 7 is detachably connected with the output end of the annular force sensor 6.

[0031] Further comprising a first handle 14, an adjustable foot 15, an annular flat pad 16 and a second handle 17. The top end of the instrument display 5 is installed with the first handle 14. The bottom end of the test bench 1 is respectively provided with a group of adjustable feet 15 at the four corners. The outer side of the first bolt 13 is sleeved with the annular flat pad 16. The front end of the mounting seat body 8 is provided with the second handle 17.

[0032] In this embodiment, the instrument display 5 is then placed at the top end of the support plate 18 under the cooperation of the positioning frame 19. The support plate 18 with the second notch 9 matched with the to-be-tested bolt 20 is selected. The two groups of sliding blocks 10 of the support plate 18 are respectively slid into a group of sliding grooves 4. Then the first bolt 13 is passed through the circular hole and threadedly connected with the threaded groove 12. Then the nut of the to-be-tested bolt 20 is downwardly moved so that the screw rod part of the to-be-tested bolt 20 enters the second notch 9. Then the annular force sensor 6 is sleeved on the screw rod part of the to-be-tested bolt 20. The to-be-tested nut 21 is threadedly connected with the to-be-tested bolt 20. After the detection is completed, the to-be-tested bolt 20 is directly horizontally taken out from the second notch 9, thereby improving the detection efficiency.

[0033] ​​The annular force measuring sensor 6 and the instrument display 5 of the fastener high preloading connection pre-tightening force measuring device are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, and no creative labor of the technical personnel in the field is needed.

[0034] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary technical personnel in the technical field, several improvements and modifications can be made without departing from the technical principles of the utility model, and these improvements and modifications should also be regarded as the protection range of the utility model.

Claims

1. A device for measuring the pre-tightening force of a high pre-load fastener connection, comprising a test bench (1), characterized in that, It also includes support frame assembly, mounting seat assembly and force sensor assembly, the test bench (1) top is provided with support frame assembly, the force sensor assembly is placed on the support frame assembly, and the mounting seat assembly is detachably installed on the support frame assembly.

2. The fastener high preload connection pretension force measuring device of claim 1, wherein, The support frame assembly comprises a support rod (2), a first notch (3), a sliding groove (4), a support plate (18) and a positioning frame (19), the support plate (18) is installed on the top of the test bench (1) through a plurality of support rods (2), the top of the support plate (18) is provided with the positioning frame (19), the front end of the support plate (18) is provided with the first notch (3), and the left and right ends of the first notch (3) are respectively provided with a group of sliding grooves (4).

3. The fastener high preload connection pretension force measuring device of claim 2, wherein, The force sensor assembly comprises an instrument display (5), a ring-shaped force sensor (6) and a transmission line (7), the input end of the instrument display (5) is connected with the first end of the transmission line (7), and the second end of the transmission line (7) is detachably connected with the output end of the ring-shaped force sensor (6).

4. The fastener high preload connection pretension force measuring device of claim 3, wherein, The mounting seat assembly comprises a mounting seat body (8), a second notch (9), a sliding block (10), a limiting plate (11), a threaded groove (12) and a first bolt (13), the left and right ends of the mounting seat body (8) are respectively provided with a group of sliding blocks (10), the front end of the mounting seat body (8) is provided with a group of second notches (9), the left and right ends of the mounting seat body (8) are respectively provided with a group of limiting plates (11), a circular hole is formed in each limiting plate (11), and a group of first bolts (13) are respectively arranged in each circular hole, the front end of the support plate (18) is provided with two groups of threaded grooves (12), and the first bolts (13) are in threaded connection with the threaded grooves (12).

5. The fastener high preload connection pretension force measuring device of claim 3, wherein, The instrument display (5) is provided with a first handle (14) at the top.

6. The fastener high preload connection pretension force measuring device of claim 1, wherein, The test bench (1) is provided with a group of adjustable feet (15) at the bottom of four corners.

7. The fastener high preload connection pretension force measuring device of claim 4, wherein, The first bolt (13) is provided with a ring-shaped flat pad (16), and the mounting seat body (8) is provided with a second handle (17) at the front end. The first bolt (13) is provided with a ring-shaped flat pad (16), and the mounting seat body (8) is provided with a second handle (17) at the front end.

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