Bending resistance testing device for screw

Abstract

The invention relates to the field of fastener testing, in particular to a screw bending resistance testing device. The technical problems are that an existing testing device is difficult to test different parts of a screw at the same time, so that the testing efficiency is low, a supporting point between the head and the tail of the long screw is inconvenient to change, and bending resistance testing is difficult to carry out on different parts under the condition of different supporting distances. Therefore, the bending resistance test of the long screw is not comprehensive enough. A screw bending resistance testing device comprises a base, an annular support and the like. Annular supports are fixedly connected to the two sides of the base. Five long screws are clamped through five extrusion arc-shaped plates, so that the follow-up long screws are more stably subjected to anti-bending testing, a test pressing block is pushed to move downwards by intermittently starting a telescopic rod of a hydraulic cylinder body by a worker, and then the bending radian of the uppermost long screw is scanned in real time through a scanning camera; therefore, the bending resistance test is carried out on the uppermost long screw.

Description

Technical Field

[0001] The invention relates to the field of fastener testing, and in particular to a screw anti-bending testing device. Background Art

[0002] As a common fastening element, long screws are widely used in many industrial fields and the construction industry. In actual usage scenarios, long screws are often subjected to complex external forces, among which bending force is a common and critical one. In some structures subjected to dynamic loads or uneven stress, long screws may bend and deform due to lateral pressure, eccentric tension and other factors.

[0003] When performing bending resistance tests on different parts of a long screw, the existing screw bending resistance testing device usually first puts in a long screw, uses a hydraulic cylinder to push the test block to perform the bending resistance test on the long screw, then pulls out the tested long screw and puts in a new long screw, then adjusts the position of the test block, and then uses the test block to test the long screw. This operation process is relatively cumbersome, resulting in low efficiency in the screw bending resistance test. In addition, when the existing screw bending resistance testing device tests the long screw, it is not convenient to change the support point between the head and tail of the long screw, and it is difficult to perform bending resistance tests on different parts at different support distances, resulting in an incomplete bending resistance test on the long screw. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention provides a screw anti-bending test device, which can perform anti-bending tests on different parts of multiple long screws at the same time to improve efficiency, and can change the supporting point between the head and tail of the long screw and perform anti-bending tests on different parts under different support distances, thereby being able to perform anti-bending tests on long screws more comprehensively.

[0005] The technical solution is: a screw anti-bending test device, including a base, a ring bracket, a connecting mechanism, a squeezing mechanism, a conversion mechanism, a moving mechanism and a scanning camera, wherein:

[0006] Both sides of the base are fixedly connected with annular brackets, a connecting mechanism is provided between the two annular brackets, the connecting mechanism is provided with a mounting structure for mounting the long screw to be tested, and the connecting mechanism is provided with a squeezing mechanism for squeezing the long screw;

[0007] A conversion mechanism is provided on the annular bracket, a support plate is provided on the conversion mechanism, a scanning camera is fixedly connected to the bottom of the support plate, and the conversion mechanism is used to rotate the connecting mechanism to adjust the long screw aligned with the scanning camera, thereby switching the test object;

[0008] The conversion mechanism is provided with a moving mechanism, and the moving mechanism is provided with a hydraulic cylinder body and a test pressing block. The moving mechanism is used for driving the hydraulic cylinder body and the test pressing block to move.

[0009] Optionally, the connecting mechanism includes a head ring, a fixing ring, a tail ring, and a connecting rod, wherein:

[0010] The head ring and the tail ring are respectively arranged on both sides of the annular bracket, and the head ring and the tail ring are fixedly connected by the connecting rod;

[0011] One side of the head ring is fixedly connected to a fixing collar, and the connecting rod is fixedly arranged on the fixing collar, so as to be fixedly connected to the head ring;

[0012] The head ring and the tail ring are respectively provided with a plurality of through holes and a plurality of circular holes, and the through holes and the circular holes are arranged in a one-to-one correspondence manner for the installation of long screws.

[0013] Optionally, at least three connecting rods are provided, and at least five through holes are provided, and all through holes are evenly spaced along the circumference of the head ring.

[0014] Optionally, the extrusion mechanism includes a clamping ring and an extrusion arc plate, wherein:

[0015] The clamping ring is rotatably connected to the head ring and the fixed sleeve ring, and an extrusion arc plate is fixedly connected to the outer side of the clamping ring, so that when the clamping ring rotates relative to the head ring, the extrusion arc plate can be abutted against the corresponding long screw to press and fix the long screw on the head ring.

[0016] Optionally, the extrusion mechanism further includes a push rod, a fixed support, a clamping rod, and an extrusion spring, wherein:

[0017] The clamping ring is provided with a clamping hole, and the head ring is provided with an arc groove extending in the circumferential direction and a vertical groove extending in the radial direction;

[0018] The outer side of the clamping ring is fixedly connected with a push rod, and one end of the push rod away from the clamping ring passes through the arc groove on the head ring and is led out;

[0019] A fixed support is fixedly connected to the outside of the fixed collar, a clamping rod is slidably connected to the fixed support, a main body of the clamping rod is arranged along the radial direction of the fixed collar, and an end of the clamping rod away from the fixed collar passes through the vertical groove of the head ring and is led out;

[0020] An extrusion spring is connected between the clamping rod and the fixed support, so that when the clamping hole on the clamping ring moves to the clamping rod, the clamping rod can penetrate into the clamping hole.

[0021] Optionally, the conversion mechanism includes a support plate, a servo motor, a power shaft, a sector gear and a fixed gear ring, wherein:

[0022] A support plate is fixedly connected between the two annular brackets, a servo motor is fixedly connected to the support plate, a power shaft is fixedly connected to the output shaft of the servo motor, the power shaft passes through the annular bracket and is rotatably arranged, a fan-shaped gear is fixedly connected to the power shaft, a fixed gear ring is fixedly connected to the outer side of the head ring, the fan gear is meshed with the fixed gear ring, and when the fan gear continues to rotate, the head ring can be driven to rotate a predetermined angle at a time, so that the next long screw is placed at the scanning position of the scanning camera.

[0023] Optionally, the moving mechanism includes a fixed guide rod, a rotating screw rod, a moving seat, a fixed nut, a fixed pinion, a hydraulic cylinder and a test block, wherein:

[0024] A fixed guide rod is fixedly connected between the upper parts of the two annular brackets, a rotating screw rod is rotatably connected between the two annular brackets, a moving seat is slidably connected to the fixed guide rod, a fixed nut is fixedly connected to the side of the moving seat away from the fixed guide rod, and the fixed nut is connected to the rotating screw rod through a thread, so that when the rotating screw rod rotates, the moving seat can be driven to slide along the fixed guide rod through the fixed nut;

[0025] One end of the rotating screw rod close to the head ring is fixedly connected with a fixed pinion gear, and the sector gear is meshed with the fixed pinion gear;

[0026] The bottom of the moving seat is fixedly connected with a hydraulic cylinder body, and the telescopic rod of the hydraulic cylinder body is fixedly connected with a test pressing block.

[0027] Optionally, it also includes a support point switching mechanism, the two annular brackets are provided with a support point switching mechanism, the support point switching mechanism is used to switch the support point of the long screw, the support point switching mechanism includes a square rod, a moving screw, an overrunning clutch, a transmission pinion, a rotating handle, a trapezoidal moving block, a special-shaped rod, a pull ring, a support groove ring, a round rod and a support ring, wherein,

[0028] A square rod is fixedly connected between the two annular brackets, a trapezoidal moving block is slidably connected to the square rod, and a special-shaped rod is fixedly connected to one side of the trapezoidal moving block;

[0029] One end of the special-shaped rod away from the trapezoidal moving block is fixedly connected with a pull ring, the pull ring is arranged parallel and concentric with the head ring, and a supporting groove ring is rotatably sleeved on the inner side of the pull ring;

[0030] A plurality of round rods are fixedly connected to the support groove ring, the round rods are extended in the direction of the head ring, and a support ring is fixedly connected between the ends of the round rods away from the support groove ring. The support ring is provided with grooves that are the same as the number of the through holes to respectively support the long screws set in each of the through holes.

[0031] Optionally, a movable screw is rotatably connected between the two annular brackets, an end of the movable screw close to the head ring is fixedly connected to an overrunning clutch, a transmission pinion is fixedly connected to the outer side of the overrunning clutch, and the fixed pinion is meshed with the transmission pinion.

[0032] Optionally, one end of the movable screw rod close to the head ring is fixedly connected with a rotating handle.

[0033] The beneficial effects are: 1. Five long screws are clamped by five extrusion arc plates, so that the subsequent long screws can be tested for anti-bending more stably. The staff intermittently starts the telescopic rod of the hydraulic cylinder to push the test block downward, thereby squeezing the long screw at the top, and then uses a scanning camera to scan the bending arc of the long screw at the top in real time, so as to perform an anti-bending test on the long screw at the top.

[0034] 2. The hydraulic cylinder body and the test pressure block are driven to move intermittently through the moving seat, thereby intermittently changing the position where the hydraulic cylinder body and the test pressure block squeeze the long screw, and then the five long screws are intermittently driven to be under the test pressure block in turn through the fan gear, so that the test pressure block can perform bending tests on different parts of the five long screws respectively, avoiding bending resistance tests on different parts of the same long screw, so that the test pressure block can perform bending resistance tests on different parts of the long screw under the same support distance.

[0035] 3. The support points between the head ring and the tail ring of the five long screws are intermittently changed by intermittent movement of the support ring, simulating the support points at different distances between the head and tail of the long screws. The five long screws are then intermittently subjected to extrusion tests in conjunction with the test pressure block. The test pressure block can then change the head and tail of the long screws at different support distances to perform anti-bending tests on different parts, thereby performing a more comprehensive anti-bending test on the long screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the base, annular bracket and head ring of the present invention.

[0037] Figure 2 It is a partial three-dimensional structural schematic diagram of the conversion mechanism and the moving mechanism of the present invention.

[0038] Figure 3 It is a schematic diagram of the three-dimensional structure of the annular bracket, the head ring and the tail ring of the present invention.

[0039] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0040] Figure 5It is a three-dimensional structural schematic diagram of the head ring, the fixed gear ring and part of the extrusion mechanism of the present invention.

[0041] Figure 6 It is a three-dimensional structural schematic diagram of the annular bracket and part of the conversion mechanism of the present invention.

[0042] Figure 7 It is a partial three-dimensional structural schematic diagram of the conversion mechanism, the moving mechanism and the support point switching mechanism of the present invention.

[0043] Figure 8 It is a three-dimensional structural schematic diagram of the annular bracket and part of the support point switching mechanism of the present invention.

[0044] Fig. 9 It is a partial three-dimensional structural schematic diagram of the annular bracket, the fixed guide rod and the support point switching mechanism of the present invention.

[0045] Fig.10 It is a partial three-dimensional mechanism schematic diagram of the moving mechanism and the support point switching mechanism of the present invention.

[0046] Fig.11 It is a schematic diagram of the split three-dimensional structure of the annular bracket, the head ring, the fixing ring and the tail ring of the present invention.

[0047] Among them: 1_base, 2_annular bracket, 3_head ring, 31_fixed sleeve ring, 4_tail ring, 5_connecting rod, 6_long screw, 71_clamping ring, 72_push rod, 73_fixed support, 74_clamping rod, 75_extrusion spring, 76_extrusion arc plate, 81_support plate, 82_servo motor, 83_power shaft, 84_sector gear, 85_fixed gear ring, 91_fixed guide rod, 92_rotating screw, 93_moving seat, 94_fixing nut, 96_fixing pinion, 97_hydraulic cylinder, 98_test pressure block, 12_scanning camera, 101_square rod, 102_moving screw, 103_overrunning clutch, 104_transmission pinion, 105_rotating handle, 106_trapezoidal moving block, 107_special-shaped rod, 108_pull ring, 109_support groove ring, 1010_round rod, 1011_support ring. DETAILED DESCRIPTION

[0048] The preferred technical solutions of the present invention are described in detail below with reference to the accompanying drawings.

[0049] Embodiment 1: A screw bending resistance testing device, such as Figure 1-Figure 11As shown, it includes a base 1, an annular bracket 2, a connecting mechanism, an extruding mechanism, a conversion mechanism, a moving mechanism and a scanning camera 12. The annular brackets 2 are fixedly connected to both sides of the base 1. A connecting mechanism is provided between the two annular brackets 2. The connecting mechanism is provided with a long screw 6. The connecting mechanism is provided with an extruding mechanism, and the extruding mechanism is used to extrude the long screw 6. The annular bracket 2 is provided with a conversion mechanism, and the conversion mechanism is used to rotate the long screw 6. The conversion mechanism is provided with a moving mechanism, and the moving mechanism is provided with a hydraulic cylinder body 97 and a test pressure block 98. The moving mechanism is used to drive the hydraulic cylinder body 97 and the test pressure block 98 to move. The conversion mechanism is provided with a support plate 81, and the bottom of the support plate 81 is fixedly connected to a scanning camera 12, and the scanning camera 12 is used to detect the bending degree of the long screw 6.

[0050] The connecting mechanism includes a head ring 3, a fixed ring 31, a tail ring 4, a connecting rod 5 and a long screw 6, wherein a head ring 3 is sleeved on the inner side of one annular bracket 2, and one side of the head ring 3 is fixedly connected to the fixing ring 31, and a tail ring 4 is sleeved on the other annular bracket 2, and three connecting rods 5 are welded to the side of the fixing ring 31 close to the tail ring 4, and the three connecting rods 5 are welded to the inner side of the tail ring 4, five through holes are opened on the head ring 3, and five circular holes are opened on the tail ring 4, and long screws 6 are inserted between the five through holes of the head ring 3 and the five circular holes of the tail ring 4, and there are five long screws 6 in total.

[0051] The extrusion mechanism includes a clamping ring 71, a push rod 72, a fixed support 73, a clamping rod 74, an extrusion spring 75 and an extrusion arc plate 76. The head ring 3 and the fixed ring 31 are rotatably connected with the clamping ring 71, the clamping ring 71 is provided with a clamping hole, the head ring 3 is provided with an arc groove and a vertical groove, the outer side of the clamping ring 71 is fixedly connected with the push rod 72, the end of the push rod 72 away from the clamping ring 71 passes through the arc groove on the head ring 3, the outer side of the fixed ring 31 is fixedly connected with the fixed support 73, the fixed support 73 is slidably connected with the clamping rod 74, the other end of the clamping rod 74 passes through the vertical groove of the head ring 3, an extrusion spring 75 is connected between the clamping rod 74 and the fixed support 73, and five extrusion arc plates 76 are fixedly connected to the outer side of the clamping ring 71.

[0052] The five extrusion arc plates 76 respectively extrudes the five long screws 6 .

[0053] The conversion mechanism includes a support plate 81, a servo motor 82, a power shaft 83, a sector gear 84 and a fixed gear ring 85. The support plate 81 is fixedly connected between the two annular brackets 2. The servo motor 82 is fixedly connected to the support plate 81. The power shaft 83 is fixedly connected to the output shaft of the servo motor 82. The power shaft 83 passes through one of the annular brackets 2. The sector gear 84 is welded on the end of the power shaft 83 away from the servo motor 82. The fixed gear ring 85 is fixedly connected to the outer side of the head ring 3, and the sector gear 84 is meshed with the fixed gear ring 85.

[0054] The moving mechanism includes a fixed guide rod 91, a rotating screw 92, a moving seat 93, a fixed nut 94, a fixed pinion 96, a hydraulic cylinder body 97 and a test pressure block 98. The fixed guide rod 91 is fixedly connected between the upper parts of the two annular brackets 2, and the rotating screw 92 is rotatably connected between the two annular brackets 2. The moving seat 93 is slidably connected to the fixed guide rod 91, and the side of the moving seat 93 away from the fixed guide rod 91 is fixedly connected to the fixed nut 94, and the fixed nut 94 is connected to the rotating screw 92 through a thread. The end of the rotating screw 92 close to the head ring 3 is fixedly connected to the fixed pinion 96, and the sector gear 84 is meshed with the fixed pinion 96. The bottom of the moving seat 93 is fixedly connected to the hydraulic cylinder body 97, and the test pressure block 98 is fixedly connected to the telescopic rod of the hydraulic cylinder body 97.

[0055] At first, the clamping ring 71 squeezes the clamping rod 74, the squeezing spring 75 is compressed, the upper part of the clamping rod 74 is above the vertical groove of the head ring 3, and the push rod 72 is on the side of the arc groove of the head ring 3 away from the clamping rod 74. When it is necessary to perform a bending test on the long screw 6, the staff puts the five long screws 6 into the five through holes of the head ring 3 and the circular hole of the tail ring 4 respectively, and pushes the push rod 72, the clamping ring 71 and the five squeezing arc plates 76 to rotate forward. The push rod 72 rotates forward along the arc groove of the head ring 3, the clamping ring 71 rotates forward along the fixed collar 31, and the five squeezing arc plates 76 squeeze the five long screws 6 respectively. The clamping ring 71 rotates forward and no longer squeezes the clamping rod 74. Under the resetting action of the squeezing spring 75, the clamping rod 74 is clamped into the clamping hole of the clamping ring 71. Plate 76, and then clamp the five long screws 6, so that the subsequent long screws 6 can be more stably tested for anti-bending, and then the scanning camera 12 and the servo motor 82 are started, the output shaft of the servo motor 82 is reversed to drive the power shaft 83 and the fan gear 84 to reverse together, the fan gear 84 reverses to drive the head ring 3 and the fixed gear ring 85 to rotate forward together, the head ring 3 drives the fixed collar 31, the three connecting rods 5, the five long screws 6, the five extrusion arc plates 76 and the tail ring 4 to reverse together, one of the long screws 6 rotates to the bottom of the hydraulic cylinder body 97 and the test block 98, the fan gear 84 continues to reverse, the fan gear 84 is disengaged from the fixed gear ring 85, the fan gear 84 reverses no longer drives the fixed gear ring 85 and the head ring 3 to rotate, the five long screws 6 also no longer rotates forward, and then the staff intermittently starts the hydraulic cylinder 97, and the telescopic rod of the hydraulic cylinder 97 moves downward to drive the test pressing block 98 to move downward together, and the test pressing block 98 squeezes the long screw 6 at the top, and the staff intermittently starts the telescopic rod of the hydraulic cylinder 97 to push the test pressing block 98 to move downward, thereby squeezing the long screw 6 at the top, and then the scanning camera 12 scans the bending curvature of the long screw 6 at the top in real time, so as to perform an anti-bending test on the long screw 6 at the top, and the sector gear 84 continues to reverse, and the sector gear 84 reverses to drive the fixed pinion 96 and the rotating screw 92 to rotate forward, and under the guidance of the fixed guide rod 91, the rotating screw 92 rotates forward through the thread to drive the fixed nut 94 and the moving The movable seat 93 moves toward the direction close to the tail ring 4, and the movable seat 93 drives the hydraulic cylinder body 97 and the test pressure block 98 to move together. The movable seat 93 drives the hydraulic cylinder body 97 and the test pressure block 98 to move intermittently, thereby intermittently changing the position where the hydraulic cylinder body 97 and the test pressure block 98 squeeze the long screw 6, and then intermittently drives the five long screws 6 to be located under the test pressure block 98 in turn through the sector gear 84, so that the test pressure block 98 can perform bending tests on different parts of the five long screws 6 respectively, avoiding anti-bending tests on different parts of the same long screw 6, so that the test pressure block 98 can perform anti-bending tests on different parts of the long screw 6 under the same support distance. After completing the anti-bending tests on the five long screws 6,The staff turns off the servo motor 82 and the scanning camera 12. The output shaft of the servo motor 82 no longer drives the fan gear 84 to reverse. The fan gear 84 no longer reverses and no longer drives the fixed gear ring 85, the head ring 3 and the five long screws 6 to rotate forward. The staff first manually pulls the clamping rod 74 upward, the extrusion spring 75 is compressed, and the clamping rod 74 no longer clamps the clamping hole of the clamping ring 71. Then the push rod 72 is rotated to reset. The reset of the push rod 72 drives the clamping ring 71 and the five extrusion arc plates 76 to reset. The five extrusion arc plates 76 no longer squeeze the five long screws 6. Then, the five long screws 6 are taken out from the five through holes of the head ring 3 and the five round holes of the tail ring 4 in turn. Finally, the rotating screw 92 is rotated to reset. Under the guidance of the fixed guide rod 91, the rotating screw 92 resets and drives the moving seat 93, the hydraulic cylinder body 97 and the test block 98 to reset.

[0056] Embodiment 2: Based on embodiment 1, Figure 7-Figure 11 As shown, it also includes a support point switching mechanism. The two annular brackets 2 are provided with a support point switching mechanism, and the support point switching mechanism is used to switch the support point of the long screw 6. The support point switching mechanism includes a square rod 101, a moving screw 102, an overrunning clutch 103, a transmission pinion 104, a rotating handle 105, a trapezoidal moving block 106, a special-shaped rod 107, a pull ring 108, a support groove ring 109, a round rod 1010 and a support ring 1011. The square rod 101 is fixedly connected between the two annular brackets 2, and the moving screw 102 is rotatably connected between the two annular brackets 2. The end of the moving screw 102 close to the head ring 3 is fixedly connected to the overrunning clutch 103, and the outer side of the overrunning clutch 103 is fixedly connected to the transmission pinion Wheel 104, the fixed pinion 96 is meshed with the transmission pinion 104, a rotating handle 105 is welded to the end of the moving screw 102 close to the head ring 3, a trapezoidal moving block 106 is slidably connected to the square rod 101, a special-shaped rod 107 is fixedly connected to one side of the trapezoidal moving block 106, a pull ring 108 is fixedly connected to the end of the special-shaped rod 107 away from the trapezoidal moving block 106, a support groove ring 109 is sleeved on the inner side of the pull ring 108, three round rods 1010 are fixedly connected to the side of the support groove ring 109 close to the tail ring 4, a support ring 1011 is welded between the ends of the three round rods 1010 away from the support groove ring 109, five grooves are opened on the support ring 1011, and the five grooves of the support ring 1011 respectively support the long screw 6.

[0057] At first, when the rotating screw 92 and the fixed pinion 96 rotate forward, the fixed pinion 96 rotates forward to drive the transmission pinion 104 to rotate reversely. Under the action of the overrunning clutch 103, the reverse rotation of the transmission pinion 104 will not drive the movable screw 102 to rotate. When it is necessary to change the supporting point of the long screw 6 for testing, the staff starts the servo motor 82 to rotate forward and intermittently starts the hydraulic cylinder 97. The output shaft of the servo motor 82 rotates forward to drive the power shaft 83 and the fan gear 84 to rotate forward. The fan gear 84 rotates forward and continues to drive the fixed gear ring 85 and the head ring 3 to rotate reversely. The fan gear 84 rotates forward. The rotation drives the fixed pinion 96 to rotate intermittently, the fixed pinion 96 rotates reversely and drives the rotating screw 92 to rotate reversely, the rotating screw 92 rotates reversely and drives the moving seat 93, the hydraulic cylinder 97 and the test pressing block 98 to reset from the position close to the tail ring 4 to the direction close to the head ring 3, the fixed pinion 96 rotates reversely and drives the transmission pinion 104 to rotate forwardly, the transmission pinion 104 rotates forwardly and drives the overrunning clutch 103 and the moving screw 102 to rotate forwardly, under the guidance of the square rod 101, the moving screw 102 rotates forwardly and drives the trapezoidal moving block 106 to move in the direction close to the tail ring 4 The trapezoidal moving block 106 moves to drive the special-shaped rod 107 and the pull ring 108 to move toward the direction close to the tail ring 4. The pull ring 108 drives the support groove, the three round rods 1010 and the support ring 1011 to move intermittently. The hydraulic cylinder body 97 intermittently drives the test pressing block 98 to move downward. The test pressing block 98 squeezes the long screw 6 at the top. The support ring 1011 intermittently moves to intermittently change the support points between the head ring 3 and the tail ring 4 of the five long screws 6, simulating the support points at different distances between the head and the tail of the long screw 6, and then cooperates with the test pressing block 9 8 Intermittently perform extrusion tests on the five long screws 6, so that the test pressing block 98 can change the head and tail of the long screw 6 to perform anti-bending tests on different parts under different support distances, thereby performing a more comprehensive anti-bending test on the long screw 6. Finally, after the test of the long screw 6 is completed, the staff reverses the rotating handle 105, and the reversal of the rotating handle 105 drives the moving screw 102 to reverse, and the reversal of the moving screw 102 causes the trapezoidal moving block 106, the special-shaped rod 107, the pull ring 108, the support groove ring 109, the round rod 1010 and the support ring 1011 to reset.

[0058] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims

1. A screw bending resistance testing device, characterized in that: It comprises a base (1), an annular bracket (2), a connecting mechanism, a pressing mechanism, a conversion mechanism, a moving mechanism and a scanning camera (12), wherein: Both sides of the base (1) are fixedly connected to annular brackets (2), a connecting mechanism is provided between the two annular brackets (2), the connecting mechanism is provided with a mounting structure for mounting a long screw (6) to be tested, and the connecting mechanism is provided with a squeezing mechanism for squeezing the long screw (6); A conversion mechanism is provided on the annular bracket (2), the conversion mechanism is provided with a support plate (81), a scanning camera (12) is fixedly connected to the bottom of the support plate (81), and the conversion mechanism is used to rotate the connecting mechanism to adjust the long screw (6) aligned with the scanning camera (12), thereby switching the test object; The conversion mechanism is provided with a moving mechanism, and the moving mechanism is provided with a hydraulic cylinder body (97) and a test pressing block (98). The moving mechanism is used to drive the hydraulic cylinder body (97) and the test pressing block (98) to move.

2. A screw bending resistance testing device as claimed in claim 1, characterized in that: The connecting mechanism comprises a head ring (3), a fixing ring (31), a tail ring (4), and a connecting rod (5), wherein: The head ring (3) and the tail ring (4) are respectively arranged on both sides of the annular bracket (2), and the head ring (3) and the tail ring (4) are fixedly connected via the connecting rod (5); One side of the head ring (3) is fixedly connected to a fixing collar (31), and the connecting rod (5) is fixedly arranged on the fixing collar (31), thereby being fixedly connected to the head ring (3); The head ring (3) and the tail ring (4) are respectively provided with a plurality of through holes and a plurality of circular holes, and the through holes and the circular holes are arranged in a one-to-one correspondence manner for the installation of long screws (6).

3. A screw bending resistance testing device as claimed in claim 2, characterized in that: At least three connecting rods (5) are provided, and at least five through holes are provided, and all of them are evenly spaced along the circumference of the head ring (3).

4. A screw bending resistance testing device as claimed in claim 2, characterized in that: The extrusion mechanism comprises a clamping ring (71) and an extrusion arc plate (76), wherein: The head ring (3) and the fixing ring (31) are rotatably connected with the clamping ring (71), and the outer side of the clamping ring (71) is fixedly connected with an extrusion arc plate (76), so that when the clamping ring (71) rotates relative to the head ring (3), the extrusion arc plate (76) can be abutted against the corresponding long screw (6), so that the long screw (6) is pressed and fixed on the head ring (3).

5. A screw bending resistance testing device as claimed in claim 4, characterized in that: The extrusion mechanism also includes a push rod (72), a fixed support (73), a clamping rod (74), and an extrusion spring (75), wherein: The clamping ring (71) is provided with a clamping hole, and the head ring (3) is provided with an arc groove extending in the circumferential direction and a vertical groove extending in the radial direction; The outer side of the clamping ring (71) is fixedly connected with a push rod (72), and one end of the push rod (72) away from the clamping ring (71) passes through the arc groove on the head ring (3) and is led out; A fixed support (73) is fixedly connected to the outside of the fixed collar (31), a clamping rod (74) is slidably connected to the fixed support (73), a main body of the clamping rod (74) is arranged along the radial direction of the fixed collar (31), and one end of the clamping rod (74) away from the fixed collar (31) passes through the vertical groove of the head ring (3) and is led out; A compression spring (75) is connected between the clamping rod (74) and the fixed support (73) so that when the clamping hole on the clamping ring (71) moves to the clamping rod (74), the clamping rod (74) can penetrate into the clamping hole.

6. A screw bending resistance testing device as claimed in claim 4, characterized in that: The conversion mechanism comprises a support plate (81), a servo motor (82), a power shaft (83), a sector gear (84) and a fixed gear ring (85), wherein: A support plate (81) is fixedly connected between the two annular brackets (2), a servo motor (82) is fixedly connected to the support plate (81), a power shaft (83) is fixedly connected to the output shaft of the servo motor (82), the power shaft (83) passes through the annular bracket (2) and is rotatably arranged, a fan-shaped gear (84) is fixedly connected to the power shaft (83), a fixed gear ring (85) is fixedly connected to the outer side of the head ring (3), the fan-shaped gear (84) is meshed with the fixed gear ring (85), and then when the fan-shaped gear (84) continues to rotate, the head ring (3) can be driven to rotate a predetermined angle at a fixed time, so that the next long screw (6) is placed at the scanning position of the scanning camera (12).

7. A screw bending resistance testing device as claimed in claim 6, characterized in that: The moving mechanism comprises a fixed guide rod (91), a rotating screw rod (92), a moving seat (93), a fixed nut (94), a fixed pinion (96), a hydraulic cylinder (97) and a test pressing block (98), wherein: A fixed guide rod (91) is fixedly connected between the upper parts of the two annular brackets (2), a rotating screw rod (92) is rotatably connected between the two annular brackets (2), a movable seat (93) is slidably connected to the fixed guide rod (91), a fixed nut (94) is fixedly connected to the side of the movable seat (93) away from the fixed guide rod (91), and the fixed nut (94) is connected to the rotating screw rod (92) through a thread, so that when the rotating screw rod (92) rotates, the movable seat (93) can be driven to slide along the fixed guide rod (91) through the fixed nut (94); One end of the rotating screw (92) close to the head ring (3) is fixedly connected to a fixed pinion (96), and the sector gear (84) is meshed with the fixed pinion (96); The bottom of the movable seat (93) is fixedly connected to a hydraulic cylinder body (97), and the telescopic rod of the hydraulic cylinder body (97) is fixedly connected to a test pressing block (98).

8. A screw bending resistance testing device as claimed in claim 7, characterized in that: The invention also comprises a support point switching mechanism. The two annular brackets (2) are provided with the support point switching mechanism. The support point switching mechanism is used to switch the support point of the long screw (6). The support point switching mechanism comprises a square rod (101), a movable screw rod (102), an overrunning clutch (103), a transmission pinion (104), a rotating handle (105), a trapezoidal movable block (106), a special-shaped rod (107), a pull ring (108), a support groove ring (109), a round rod (1010) and a support ring (1011), wherein: A square rod (101) is fixedly connected between the two annular brackets (2), a trapezoidal moving block (106) is slidably connected to the square rod (101), and a special-shaped rod (107) is fixedly connected to one side of the trapezoidal moving block (106); One end of the special-shaped rod (107) away from the trapezoidal moving block (106) is fixedly connected with a pull ring (108), the pull ring (108) is arranged parallel and concentric with the head ring (3), and a supporting groove ring (109) is rotatably sleeved on the inner side of the pull ring (108); A plurality of round rods (1010) are fixedly connected to the support groove ring (109), the round rods (1010) are extended in the direction of the head ring (3), and a support ring (1011) is fixedly connected between the ends of the round rods (1010) away from the support groove ring (109), and the support ring (1011) is provided with grooves that are the same in number as the through holes, so as to respectively support the long screws (6) set in each of the through holes.

9. A screw bending resistance testing device as claimed in claim 8, characterized in that: A moving screw (102) is rotatably connected between the two annular brackets (2); an end of the moving screw (102) close to the head ring (3) is fixedly connected to an overrunning clutch (103); a transmission pinion (104) is fixedly connected to the outer side of the overrunning clutch (103); and the fixed pinion (96) is meshed with the transmission pinion (104).

10. A screw bending resistance testing device as claimed in claim 9, characterized in that: One end of the movable screw rod (102) close to the head ring (3) is fixedly connected to a rotating handle (105).

Images