Steel structure bolt anti-sliding detection device

Abstract

The utility model belongs to the technical field of test equipment, and particularly relates to an anti-sliding detection device for a steel structure bolt. Comprising a testing machine, clamping plates, sliding plates, an upper sample plate, a lower sample plate, a fastening mechanism and an axial force sensor, the clamping plates are arranged at the two ends of the testing machine, the sliding plates are connected to the clamping plates, the sliding plates on the two sides correspond to each other, and the upper sample plate and the lower sample plate slidably sleeve the sliding plates on the two sides respectively. The sliding plate, the upper sample plate and the lower sample plate are each provided with a plurality of through holes allowing bolt rods to penetrate through, fastening mechanisms consistent with the through holes in number are arranged at the bottom of the lower sample plate, each fastening mechanism comprises a fastening motor, a small gear, a large gear and a limiting base, the fastening motor is arranged below the lower sample plate, the small gear is connected to an output shaft of the fastening motor, and the small gear is meshed with the large gear. According to the automatic bolt fastening device, through the mode that the automatic fastening mechanism is combined with the axial force sensor, automatic control over the bolt fastening process is achieved, work efficiency is greatly improved, and labor cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to test equipment technical field especially relates to a steel structure bolt anti -slip detection device. BACKGROUND

[0002] In steel structure engineering, the detection of bolt anti -slip performance is the important link of ensuring the safety and reliability of structure. With the development of construction industry, the requirement of steel structure connecting piece is higher and higher, especially for the key position of bearing larger shear force and tension, the anti -slip ability of its connecting bolt is directly related to the safety of entire structure.

[0003] At present, when carrying out bolt fastening operation, at least two persons usually work in coordination, one of them uses spanner to fix bolt rod to prevent it from rotating with nut, and the other uses another spanner to rotate nut to complete the fastening of bolt. This operation mode is not only inefficient, but also due to the influence of human factors, it is easy to cause uneven fastening force or bolt not to be fastened correctly, thereby affecting the final anti -slip test result. UTILITY MODEL CONTENTS

[0004] In order to overcome the low efficiency of the mode that one person uses spanner to fix bolt rod to prevent it from rotating with nut, and the other uses another spanner to rotate nut when carrying out bolt fastening operation, the technical problem of the utility model is to provide a steel structure bolt anti -slip detection device.

[0005] Technical scheme: a steel structure bolt anti -slip detection device, including testing machine, clamping plate, sliding plate, sample plate, lower sample plate, fastening mechanism and axial force sensor, both ends of testing machine are equipped with clamping plate, sliding plate is connected on clamping plate, both sides of sliding plate correspond, sample plate and lower sample plate are respectively slidably sleeved on both sides of sliding plate, a plurality of through holes for bolt rod are formed in sliding plate, sample plate and lower sample plate, fastening mechanism is arranged on the bottom of lower sample plate and is consistent with the number of through holes, fastening mechanism includes fastening motor, pinion, gear and limit seat, fastening motor is arranged below lower sample plate, the output shaft of fastening motor is connected with pinion, pinion is engaged with gear, limit seat is slidably connected on the inner side of gear, and limit seat is used for placing nut and gasket, axial force sensor is installed at the through hole of sample plate and is used for monitoring the axial force of bolt, controller is built in testing machine, and axial force sensor and fastening motor are electrically connected with the controller of testing machine.

[0006] Further, it further includes guide rail and sliding frame, guide rail is installed on the bottom of lower sample plate, and sliding frame is slidably connected on guide rail, and fastening motor is installed on sliding frame, and gear is rotatably connected with sliding frame.

[0007] Further, the spacer is provided with a gasket groove and a nut groove on the upper and lower sides respectively, and the gasket groove and the nut groove are located directly below the through hole.

[0008] Further, the spacer is provided with a protrusion on the outer side, and the inner side of the large gear is provided with a sliding groove matched with the protrusion.

[0009] Further, the spacer is provided with a gasket groove and a nut groove on the upper and lower sides respectively, and the gasket groove and the nut groove are located directly below the through hole.

[0010] Further, the spacer is provided with a protrusion on the outer side, and the inner side of the large gear is provided with a sliding groove matched with the protrusion.

[0011] Further, the spacer is provided with a gasket groove and a nut groove on the upper and lower sides respectively, and the gasket groove and the nut groove are located directly below the through hole.

[0012] Beneficial effects are: the automatic fastening mechanism and the axial force sensor are combined, the automatic control of the bolt fastening process is realized, the work efficiency is greatly improved, and the labor cost is reduced. The device can complete the installation and disassembly of the bolt under the condition of single person operation, avoids the operation out of synchronization problem that may occur in the traditional double person operation mode. At the same time, the axial force of the bolt is monitored in real time by using the axial force sensor, so that each bolt can reach the predetermined fastening standard, and the accuracy and reliability of the test result are improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0014] Figure 2 It is an explosion schematic diagram of the sliding plate, the sample plate and the lower sample plate of the utility model.

[0015] Figure 3 It is a three-dimensional structure schematic diagram of the utility model.

[0016] Figure 4 It is a three-dimensional structure schematic diagram of the utility model.

[0017] Figure 5 It is an explosion schematic diagram of the utility model.

[0018] Figure 6 It is the three-dimensional structure schematic view of the central component of the utility model.

[0019] Figure 7 It is Figure 6 The partial enlarged view of A in the middle.

[0020] Reference signs: 1: testing machine, 2: clamping plate, 3: sliding plate, 4: upper sample plate, 5: lower sample plate, 6: through hole, 7: guide rail, 8: sliding frame, 9: fastening mechanism, 91: fastening motor, 92: pinion, 93: gear, 94: limit seat, 95: nut groove, 96: gasket groove, 97: protruding block, 98: sliding groove, 10: limit assembly, 101: support, 102: guide groove, 103: adjusting screw, 104: limit clamping plate, 11: axial force sensor, 12: central component, 121: guide pipe, 122: guide frame, 123: bearing seat, 124: threaded rod, 125: threaded pipe, 13: scale line, 14: laser lamp. DETAILED DESCRIPTION

[0021] The embodiments of the utility model are explained below with reference to the drawings.

[0022] Example 1: a steel structure bolt anti-slippage detection device, such as Figures 1-5As shown, including the testing machine 1, clamping plate 2, sliding plate 3, sample plate 4, sample plate 5, fastening mechanism 9 and axial force sensor 11, the testing machine 1 is provided with clamping plate 2 at both ends, the sliding plate 3 is connected to the clamping plate 2, the sliding plate 3 on both sides corresponds, the sample plate 4 and the sample plate 5 are respectively slidably sleeved on the sliding plate 3 on both sides, the sliding plate 3, the sample plate 4 and the sample plate 5 are all provided with a plurality of through holes 6 for bolt rod to pass through, the number of through holes 6 of each sliding plate 3 is two, the number of through holes 6 of the sample plate 4 and the sample plate 5 is four, the bolt rod is passed through the through holes 6 of the sample plate 4, the sliding plate 3 and the sample plate 5, the testing machine 1 is respectively pressed on both sides of the clamping plate 2 and the sliding plate 3, thereby the transverse shear force is applied to the bolt, in order to test the sliding condition of the bolt, the bottom of the sample plate 5 is provided with the fastening mechanism 9 consistent with the number of through holes 6, the fastening mechanism 9 includes fastening motor 91, pinion 92, gear 93 and limit seat 94, the fastening motor 91 is arranged below the sample plate 5, the output shaft of the fastening motor 91 is connected with the pinion 92, the pinion 92 is engaged with the gear 93, the limit seat 94 is slidably connected to the inner side of the gear 93, the outer side of the limit seat 94 is provided with protrusions 97 at intervals, the inner side of the gear 93 is provided with sliding grooves 98 matched with the protrusions 97 at intervals, the limit seat 94 matched with different models of nuts can be replaced according to different models of nuts, when replacing, the limit seat 94 is pulled upward, the protrusions 97 are moved upward and separated from the sliding grooves 98, the other matched limit seat 94 is put into the inner side of the gear 93, when the gear 93 rotates, the rotation force of the gear 93 can be transmitted to the limit seat 94 through the cooperation of the protrusions 97 and the sliding grooves 9, the limit seat 94 is provided with washer groove 96 and nut groove 95 on the upper and lower sides respectively, the washer groove 96 and the nut groove 95 are located directly below the through hole 6, the washer and the nut are put into the washer groove 96 and the nut groove 95, so that the nut placed in the limit seat 94 rotates. The nut groove 95 and the washer groove 96 in the limit seat 94 are used for placing the nut and the washer, the axial force sensor 11 is installed at the through hole 6 of the sample plate 4, the axial force sensor 11 is placed on the sample plate 4, which is used for monitoring the axial force of the bolt, the middle of the axial force sensor 11 is provided with a circular hole corresponding to the through hole 6, the testing machine 1 is provided with a controller, the axial force sensor 11 and the fastening motor 91 are electrically connected with the controller of the testing machine 1.

[0023] As shown in Figure 3 and Figure 4 , further comprising guide rail 7 and sliding frame 8, the guide rail 7 is installed at the bottom of the sample plate 5, the sliding frame 8 is slidably connected to the guide rail 7, the fastening motor 91 is fixedly installed on the sliding frame 8, the gear 93 is rotatably connected with the sliding frame 8.

[0024] When the bolt is subjected to the anti-slip test, the upper sample plate 4 and the lower sample plate 5 are moved to align the through holes 6 on the upper sample plate 4, the lower sample plate 5 and the slip plate 3, the sliding frame 8 is pulled to move outward, the nut and the gasket are respectively placed in the nut groove 95 and the gasket groove 96, the sliding frame 8 is pushed to reset, the axial force sensor 11 is placed outside the through hole 6 on the top of the upper sample plate 4, the bolt rod is sequentially inserted into the axial force sensor 11 and the through hole 6 from top to bottom, the axial force sensor 11 is externally connected to the controller through the data line, the lower end of the bolt rod penetrates the gasket and cooperates with the nut below, the wrench is clamped on the screw head at the top of the bolt rod, and then the tightening motor 91 is started, the tightening motor 91 drives the pinion 92 to rotate, the pinion 92 drives the gear wheel 93 to rotate, the limiting seat 94 rotates synchronously with the gear wheel 93, the nut starts to rotate around the bolt rod axis under the driving of the limiting seat 94, the bolt rod remains in a fixed state, the outer thread of the bolt rod forms a screw pair mechanism with the inner thread of the nut, the nut is constrained from rotating circumferentially by the nut groove 95, the screw pair converts the rotary motion into linear motion to drive the nut to vertically move along the bolt rod axis, and the nut moves upward in the nut groove 95; when the axial force sensor 11 senses that the axial force of the bolt rod reaches a preset value, the controller controls the tightening motor 91 to be turned off, the wrench is removed, the anti-slip test is started by the testing machine 1, and after the test is completed, the wrench is first clamped on the outside of the bolt rod, the tightening motor 91 is started to rotate in the reverse direction, the limiting seat 94 is driven to rotate by the pinion 92 and the gear wheel 93, the nut is unscrewed from the bolt rod along with the rotation of the limiting seat 94, the work of the tightening motor 91 is stopped once the nut is completely unscrewed, the bolt rod is pulled out upward, the sliding frame 8 is pulled out forward, and the nut and the gasket are taken out.

[0025] As shown in Figures 6-7 , the scale line 13 and the laser lamp 14 are further included, the laser lamp 14 is installed on the front side of the end of each of the two slip plates 3, the length direction of each of the upper sample plate 4 and the lower sample plate 5 is provided with the scale line 13, the laser lamp 14 has two light sources in the upward and downward directions, and the two light sources in the upward and downward directions are respectively aligned with the scale line 13 on the upper sample plate 4 and the lower sample plate 5.

[0026] When the bolt rod is fixed in the through hole 6 of the slip plate 3, the upper sample plate 4 and the lower sample plate 5, the laser lamp 14 is started, the laser lamp 14 installed on the slip plate 3 projects the laser point on the scale line 13 of the upper sample plate 4 and the lower sample plate 5 after being started, and the slip condition can be directly understood by observing the change of the position of the laser point on the scale line 13.

[0027] Example 2: on the basis of example 1, as shown in Figure 1 and Figure 3As shown, the device further comprises a limiting assembly 10, which comprises a bracket 101, an adjusting screw 103 and a limiting clamp plate 104. The bracket 101 is installed on the top of the sample plate 4 and is in the shape of n. Four groups of guide grooves 102 are formed on the bracket 101, and two limiting clamp plates 104 are slidably connected to the inner side of each group of guide grooves 102. The adjusting screw 103 is rotatably installed on the upper part of the bracket 101 and is located in the guide groove 102 and is in threaded connection with the limiting clamp plate 104. The screw rod on the same guide groove 102 is provided with threads in opposite directions on both sides thereof, and the adjusting screw 103 is connected with a hexagonal block at one end.

[0028] The distance between the two limiting clamp plates 104 is adjusted according to the type of the hexagonal screw head of the bolt rod, so as to limit the screw head and avoid the bolt rod from rotating with the starting of the fastening motor 91. When the two limiting clamp plates 104 are adjusted, the screw head of the bolt rod is placed between the two limiting clamp plates 104, and the symmetrically opposite two sides of the hexagonal screw head are parallel to the contact surfaces of the two limiting clamp plates 104. The hexagonal block at the right end of the adjusting screw 103 is rotated by using a wrench, the adjusting screw 103 is rotated to drive the two limiting clamp plates 104 in the same guide groove 102 to move closer to each other, and when the limiting clamp plate 104 is in contact with the side surface of the screw head of the bolt rod, the adjusting screw 103 is stopped from being twisted. In this way, when the nut and the bolt rod are tightened, it is not necessary to manually fix the hexagonal screw head of the bolt rod by using a wrench, and the operation is more convenient.

[0029] Example 3: Based on example 2, as shown in Figure 1 and Figure 6 As shown, the device further comprises a centering assembly 12, which comprises a guide pipe 121, a guide frame 122, a bearing seat 123, a threaded rod 124 and a threaded pipe 125. The guide pipe 121 is connected to the middle part of the opposite end of the clamping plate 2 and is parallel to the sliding plate 3. The guide frame 122 is slidably connected to the guide pipe 121, and the bearing is installed on the guide frame 122. The threaded rod 124 is rotatably connected to the bearing, and the threaded pipe 125 which is matched with the threaded rod 124 is connected to the end of the clamping plate 2 which faces the threaded rod 124.

[0030] Before the bolt test, the through holes 6 of the upper sample plate 4 and the lower sample plate 5 need to be corresponded with the through holes 6 of the sliding plate 3, after the adjustment, the threaded rod 124 can be rotated, the threaded rod 124 drives the left and right guide frames 122 to move to the upper sample plate 4 and the lower sample plate 5 direction respectively under the cooperation of the threaded tube 125, until the left and right guide frames 122 contact the end of the upper sample plate 4 and the lower sample plate 5, the threaded rod 124 is stopped. When the testing machine 1 drives the two clamping plates 2 to move close to each other, the two sliding plates 3 move towards each other, and the upper sample plate 4 and the lower sample plate 5 are pushed to move by the guide frames 122, when the left end of the upper sample plate 4 contacts the upper part of the right end of the lower sample plate 5, and the left end of the lower sample plate 5 contacts the lower part of the left end of the upper sample plate 4, the testing machine 1 stops driving the clamping plate 2, at this time, the through holes 6 of the upper sample plate 4 and the lower sample plate 5 correspond to the through holes 6 of the sliding plate 3. In this way, the through holes 6 of the sliding plate 3, the upper sample plate 4 and the lower sample plate 5 can be automatically aligned, and the work efficiency is improved.

[0031] The above is only the embodiment of the present application, and does not limit the patent range of the present application, any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. A steel structure bolt anti-slip detection device, comprising a testing machine, a clamping plate, a slip plate, an upper sample plate and a lower sample plate, both ends of the testing machine are provided with the clamping plate, the slip plate is connected to the clamping plate, the slip plates on both sides correspond to each other, the upper sample plate and the lower sample plate are respectively slidably sleeved on the slip plates on both sides, and a plurality of through holes for bolt rods to pass through are arranged on the slip plate, the upper sample plate and the lower sample plate, characterized in that: The fastening mechanism and the shaft force sensor are further included, the bottom of the lower sample plate is provided with the fastening mechanism consistent with the number of through holes, the fastening mechanism comprises a fastening motor, a pinion, a gear and a limiting seat, the lower sample plate is provided below the fastening motor, the output shaft of the fastening motor is connected with the pinion, the pinion is engaged with the gear, the gear is slidably connected with the limiting seat on the inner side, the limiting seat is used for placing the nut and the gasket, the shaft force sensor is installed at the through hole of the upper sample plate and is used for monitoring the axial force of the bolt, the built-in controller of the testing machine is electrically connected with the shaft force sensor and the fastening motor.

2. The anti-slip detection device for steel structure bolts according to claim 1, characterized in that: The guide rail and the sliding frame are further included, the guide rail is installed at the bottom of the lower sample plate, the sliding frame is slidably connected with the guide rail, and the fastening motor is installed on the sliding frame.

3. The anti-slip detection device for steel structure bolts according to claim 2, characterized in that: The limiting seat is provided with a gasket groove and a nut groove on the upper and lower sides respectively, and the gasket groove and the nut groove are located directly below the through hole.

4. The anti-slip detection device for steel structure bolts according to claim 3, characterized in that: The limiting seat is provided with a protrusion on the outer side, and the gear is provided with a sliding groove matched with the protrusion on the inner side.

5. A device for detecting slippage of a steel structural bolt according to claim 4, wherein: The limiting assembly is further included, the limiting assembly comprises a bracket, an adjusting screw and a limiting clamp, the bracket is installed on the top of the upper sample plate, a plurality of guide grooves are formed in the bracket, two limiting clamps are slidably connected in the inner side of each guide groove, the adjusting screw is rotatably installed on the bracket, the adjusting screw is located in the guide groove and is threadedly connected with the limiting clamp, the screw on the same guide groove is provided with threads in opposite directions on the two sides, and one end of the adjusting screw is connected with a hexagonal block.

6. A device for detecting slippage of a steel structural bolt according to claim 5, wherein: The centering assembly is further included, the centering assembly comprises a guide pipe, a guide frame, a bearing seat, a threaded rod and a threaded pipe, the guide pipe is connected to the opposite end of each clamping plate, the guide frame is slidably connected to the guide pipe, the threaded rod is rotatably connected to the guide frame, and the threaded pipe matched with the threaded rod is connected to the end of the clamping plate facing the threaded rod.

7. A device for detecting slippage of a steel structural bolt according to claim 6, wherein: The scale line and the laser lamp are further included, the laser lamp is installed on each sliding plate, and the scale line is arranged on the length direction of the upper sample plate and the lower sample plate.

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