A transmission tower bolt loosening detection device

Abstract

The present application discloses a transmission tower bolt loosening detection device, which relates to the technical field of inspection devices for electric towers, and includes a first side rod, a first connecting rod and a limiting member, wherein the first side rod includes a fixing rod and a mounting rod, and the mounting rod and the fixing rod are respectively provided with an observation tube and a fixing tube, the fixing rod abuts against the mounting surface of the nut, the fixing tube is inserted into the observation tube and slides axially along the observation tube, an identification tube is provided in the fixing tube, a pressure spring is provided in the identification tube, and its two ends abut against the bottom of the fixing tube and the identification tube, a positioning hole is provided on the fixing tube, an observation hole communicating with the positioning hole is provided on the observation tube, and the outer wall of the identification tube is an identification surface, and the identification surface can be seen from the positioning hole; the first connecting rod is provided on the mounting rod; the limiting member is provided on the first connecting rod, the limiting member abuts against the nut, and drives the nut away from its mounting surface. The transmission tower bolt loosening detection device provided by the present application has the advantages of more accurate detection, etc.

Description

Technical Field

[0001] The invention relates to the technical field of electric pole tower inspection equipment, and in particular to a transmission pole tower bolt loosening detection device. Background Art

[0002] The construction of electric poles / iron towers generally adopts bolt connections, and the installation quality of the bolts is crucial.

[0003] When some existing electric poles / iron towers are being built, some detection / monitoring devices are also installed to detect the looseness of the bolts on the electric poles / iron towers. Generally, the vibration of the bolts is detected by some sensing elements or the distance between the bolts and the bolt installation positions is measured. The detected data is then analyzed to finally determine whether the bolts are loose.

[0004] However, the environment in which the electric poles / iron towers are located is complex and changeable. There are many factors that affect the detection of whether the bolts are loose by sensing elements. The sensitivity of the sensing elements used to detect the looseness of the bolts is relatively high. Therefore, the data obtained by the sensing elements is not completely accurate. It can only determine the approximate situation of whether the bolts are loose. Human power is still needed to further judge whether the bolts are loose.

[0005] The existing manual method for detecting the looseness of bolts is generally to knock on the bolts or the tower body and make judgments based on the sound of vibration. The detection results are greatly affected by the subjective influence of the detection personnel, and it is difficult to obtain a more accurate looseness status of the bolts. Summary of the invention

[0006] The invention provides a transmission tower bolt loosening detection device to solve the problem of inaccurate bolt loosening detection in the prior art.

[0007] A transmission tower bolt loosening detection device of the present invention adopts the following technical solution:

[0008] A transmission tower bolt loosening detection device comprises a first side rod, a first connecting rod and a limiting member, wherein the first side rod comprises a fixing rod and a mounting rod, an observation tube is rotatably arranged on the mounting rod, a fixing tube is arranged on the fixing rod, an end of the fixing rod away from the fixing tube abuts against the mounting surface of a nut, the fixing tube is inserted into the observation tube and can slide along the axial direction of the observation tube, an identification tube is arranged in the fixing tube, a pressure spring is arranged in the identification tube, two ends of the pressure spring abut against the bottom of the fixing tube and the bottom of the identification tube respectively, under the action of the pressure spring, the outer bottom surface of the identification tube abuts against the inner bottom surface of the observation tube, a positioning hole is provided on the side wall of the fixing tube, an observation hole communicating with the positioning hole is provided on the side wall of the observation tube, the outer tube wall of the identification tube is an identification surface, and the identification surface can be seen from the positioning hole through the observation hole; the first connecting rod is rotatably arranged on the mounting rod; the limiting member is slidably arranged on the first connecting rod, the limiting member can abut against the nut, and can drive the nut away from the mounting surface of the nut.

[0009] Further, the limiting member includes a limiting frame, a clamping plate and a flange, the limiting frame is arranged on the first connecting rod and the first connecting rod is inserted into the frame opening of the limiting frame, the length direction of the limiting frame is parallel to the mounting surface of the nut, the first connecting rod can slide along the length direction of the limiting frame, the clamping plate is arranged on one side of the limiting frame, the clamping plate can be abutted against the side wall of the nut, the flange is arranged on the side of the clamping plate away from the limiting frame, and the gap between the mounting surface of the nut and the nut is adapted to the flange.

[0010] Furthermore, a reset assembly is provided in the limit frame, and the reset assembly includes a movable block and a reset spring. The movable block is slidably disposed in the frame opening of the limit frame, and the first connecting rod is rotatably connected to the movable block.

[0011] Furthermore, the inner side wall of the fixed tube includes a smooth annular surface and a friction annular surface, the smooth annular surface and the friction annular surface are seamlessly connected, the smooth annular surface is close to the tube mouth of the fixed tube and corresponds to the outer tube wall of the identification tube, the friction annular surface is close to the tube bottom of the fixed tube, and the identification tube can slide from the smooth annular surface to the friction annular surface.

[0012] Furthermore, the observation tube is a transparent tube.

[0013] Furthermore, it includes a first telescopic rod, which is hinged to one end of the fixed rod against the nut mounting surface, a second connecting rod is rotatably provided on the first telescopic rod, and the limiting member is slidably provided on the second connecting rod, the limiting member on the second connecting rod corresponds to the limiting member on the first connecting rod, and a guide rail stabilizer is provided between the two limiting members, and the guide rail stabilizer is used to maintain the stability of the two limiting members approaching or moving away synchronously in the same plane.

[0014] Furthermore, the guide rail stabilizer includes a slide rail and a guide rod, the slide rail is arranged on any one of the limit frames of the two limit members, and the guide rod is arranged on the other limit frame of the two limit members, the length direction of the slide rail and the guide rod are both parallel to the length direction of the limit frame, and the guide rod is inserted into the slide rail and is slidably connected to the slide rail.

[0015] Further, it comprises a second side rod and a second telescopic rod, the second side rod is rotatably connected to an end of the first connecting rod away from the first side rod, and the second side rod and the first side rod are symmetrically arranged with respect to the first connecting rod;

[0016] The second telescopic rod is rotatably connected to an end of the second connecting rod away from the first telescopic rod, and the second telescopic rod and the first telescopic rod are symmetrically arranged with respect to the second connecting rod.

[0017] Furthermore, a first bevel gear is sleeved on the mounting rod, the first bevel gear is fixedly connected to the observation tube, a transmission mechanism is provided between the first bevel gear and the first connecting rod, and the first connecting rod can drive the first bevel gear to rotate through the transmission mechanism.

[0018] Further, the transmission mechanism includes a transmission rack, a transmission gear and a second bevel gear, the transmission rack is arranged in the frame opening of the limit frame, the transmission rack is parallel to the length direction of the limit frame, the transmission gear and the second bevel gear are both rotatably arranged on the first connecting rod, the transmission gear is meshed with the transmission rack, the second bevel gear is fixedly connected to the transmission gear, and the second bevel gear is meshed with the first bevel gear.

[0019] The beneficial effects of the present invention are as follows: 1. A transmission tower bolt loosening detection device of the present invention rotates the first side rod toward the center axis of the bolt to be detected, and the first side rod drives the first connecting rod to move, and the first connecting rod drives the limiter that rests on the nut and can drive the nut to move. Since the amplitude of the limiter movement is very small, when the first side rod continues to rotate, the limiter and the nut / bolt to be detected can react to the first side rod, so that the first side rod can be compressed when it continues to rotate. When the first side rod is compressed, the pressure spring is compressed, and then the identification tube can move toward the direction close to the bottom of the fixed tube. In the process of the identification tube moving toward the bottom of the fixed tube, the detection personnel can judge the tightness of the bolt through the identification surface area on the identification tube corresponding to the positioning hole. 2. Through the above method, the present invention can easily detect the tightness of the bolt, and the selection of a suitable identification surface can make the judgment result more intuitive, which is more accurate than the method of manual knocking and sound identification.

[0020] The implementation modes of the present invention will be further described in detail below with reference to the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic diagram of the overall structure of a transmission tower bolt loosening detection device in some embodiments of the present invention.

[0022] Figure 2 for Figure 1 Enlarged schematic diagram of part A.

[0023] Figure 3 It is a top view of a transmission tower bolt loosening detection device in some embodiments of the present invention.

[0024] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the BB direction in some embodiments.

[0025] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure along the BB direction in some other embodiments.

[0026] Figure 6 for Figure 3 Schematic diagram of the cross-sectional structure in the CC direction.

[0027] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of part D.

[0028] Figure 8 It is a partial schematic diagram of the forward structure in some embodiments of the present invention.

[0029] Fig. 9 for Figure 8Schematic diagram of the cross-sectional structure along the EE direction.

[0030] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure of part F.

[0031] Fig.11 It is a schematic diagram of the cross-sectional structure of the fixing cylinder in some embodiments of the present invention.

[0032] Fig.12 It is a schematic diagram of the unfolding of the identification surface plane in some embodiments of the present invention. DETAILED DESCRIPTION

[0033] See also Figure 1-Figure 12 , the names of the parts are as follows: 110, first side rod; 120, second side rod; 130, first connecting rod; 140, second connecting rod; 150, limiter; 111, fixing rod; 1110, fixing tube; 1111, positioning hole; 1112, identification tube; 11120, identification surface; 1113, pressure spring; 1114, smooth annular surface; 1115, friction annular surface; 112, mounting rod; 1120, observation tube; 1121, observation hole; 151, limit frame; 152, clamp Plate; 153, flange; 200, reset assembly; 210, movable block; 220, reset spring; 310, first telescopic rod; 320, second telescopic rod; 400, guide rail stabilizer; 410, slide rail; 420, guide rod; 500, first bevel gear; 600, transmission mechanism; 610, transmission rack; 620, transmission gear; 630, second bevel gear; 700, elastic washer; 800, standard area; 810, judgment point; 910, protective cover; 920, handle bar.

[0034] See also Figure 1-Figure 12 , Figure 1 It is a schematic diagram of the overall structure of a transmission tower bolt loosening detection device in some embodiments of the present invention; Figure 2 for Figure 1 A magnified schematic diagram of part A; Figure 3 A top view of a transmission tower bolt loosening detection device in some embodiments of the present invention; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the BB direction in some embodiments; Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure along the BB direction in some embodiments; Figure 6 for Figure 3 Schematic diagram of the cross-sectional structure in the CC direction; Figure 7 for Figure 6 A schematic diagram of the enlarged structure of the D part; Figure 8 It is a schematic diagram of some forward structures in some embodiments of the present invention; Fig. 9for Figure 8 Schematic diagram of the cross-sectional structure along the EE direction; Fig.10 for Fig. 9 A schematic diagram of the enlarged structure of the F part; Fig.11 is a schematic diagram of a cross-sectional structure of a fixed cylinder in some embodiments of the present invention; Fig.12 It is a schematic diagram of the unfolding of the identification surface plane in some embodiments of the present invention.

[0035] It should be noted that the bolts mentioned in the present invention are standard parts that meet national standards and are hexagonal bolts. The nuts and nuts of the bolts are chamfered so that there is always a gap between the nuts and the mounting surface of the nuts. In addition, the washers mentioned in the present invention are divided into two types, one is an elastic washer and the other is a plane washer. The elastic washer is arranged at one end of the nut, and its outer diameter is smaller than the distance between the two opposite planes of the nut. The plane washer is arranged at one end of the nut, and its outer diameter is larger than the distance between the two farthest relative points on the side wall of the nut. The position detected in the present invention is the nut end or the nut end.

[0036] An embodiment of the present invention provides a transmission tower bolt loosening detection device, comprising a first side rod 110, a first connecting rod 130 and a stopper 150. The first side rod 110 comprises a fixing rod 111 and a mounting rod 112, one end of the mounting rod 112 is rotatably connected to an observation tube 1120, one end of the fixing rod 111 is mounted with a fixing tube 1110, one end of the fixing rod 111 away from the fixing tube 1110 abuts against the mounting plane of the nut, and the angle between the fixing rod 111 and the mounting surface of the nut is an acute angle.

[0037] The fixed tube 1110 is inserted into the observation tube 1120 and is coaxially arranged with the observation tube 1120. The fixed tube 1110 can slide along the axial direction of the observation tube 1120 in the observation tube 1120. The marking tube 1112 is inserted into the fixed tube 1110. The marking tube 1112 is coaxially arranged with the fixed tube 1110 and can slide along the axial direction of the fixed tube 1110. The tube mouth of the marking tube 1112 faces the tube bottom of the fixed tube 1110. The marking tube 1112 is provided with a pressure spring 1113. The pressure spring 1113 is coaxially arranged with the marking tube 1112. The two ends of the pressure spring 1113 respectively abut against the tube bottom of the marking tube 1112 and the tube bottom of the fixed tube 1110. Under the action of the pressure spring 1113, the outer bottom surface of the marking tube 1112 abuts against the inner bottom surface of the observation tube 1120. A positioning hole 1111 is provided on the side wall of the fixed tube 1110, an observation hole 1121 which can communicate with the positioning hole 1111 is provided on the side wall of the observation tube 1120, and the outer tube wall of the identification tube 1112 is an identification surface 11120, which can be seen from the positioning hole 1111 through the observation hole 1121.

[0038] Specifically, the fixing tube 1110, the observation tube 1120, the identification tube 1112, the fixing rod 111 and the mounting rod 112 can all be metal parts with high structural strength. The observation tube 1120 can be a transparent tube, which makes it easier to observe the identification surface 11120 from the positioning hole 1111. The identification surface 11120 can be a color card surface, and the color card surface has a variety of different color stripes, and the various different color stripes are evenly distributed along the axial direction of the identification tube 1112, and the different color stripes on the color card surface correspond to different tightness of the bolt. The identification surface 11120 can also be a scale surface, and different scales correspond to different tightness of the bolt.

[0039] The first connecting rod 130 is rotatably connected to the mounting rod 112, and the axial direction of the first connecting rod 130 is perpendicular to the length direction of the mounting rod 112. The stopper 150 is slidably arranged on the first connecting rod 130, and the stopper 150 moves synchronously with the first connecting rod 130 in a direction parallel to the axial direction of the nut, and can drive the nut away from the mounting surface of the nut.

[0040] Specifically, the sliding direction between the first connecting rod 130 and the limiting member 150 is parallel to the mounting surface of the nut. The limiting member 150 may be a plate member that can be abutted against the nut of the bolt, and the plate member may have a side surface that can be adapted to the side wall of the nut. When the limiting member 150 abuts against the nut, the side surface that is adapted to the side wall of the nut may fit with the side wall of the nut. The plate member that fits with the nut has a metal sheet or other sheet-like structure with high structural strength that can drive the nut to move in a direction away from the mounting position of the nut, and the metal sheet or the sheet-like structure is adapted to the gap between the mounting surfaces of the nut and the nut.

[0041] Since the stopper 150 abuts against the nut and can drive the nut away from the mounting surface of the nut, it is not difficult to know that in the axial direction of the bolt, the stopper 150 can move synchronously with the nut. Since the first connecting rod 130 is arranged on the mounting rod 112 of the first side rod 110, and the nut prevents or restricts the movement of the stopper 150. When the first side rod 110 is pushed to rotate around the contact point between the fixing rod 111 and the mounting surface of the nut, the first connecting rod 130 will inevitably move, and the first connecting rod 130 can drive the stopper 150 to move. In the direction parallel to the axial direction of the bolt, the stopper 150 moves synchronously with the first connecting rod 130, and the distance that the stopper 150 can drive the nut to move in this direction is very short. Therefore, if the first side rod 110 is to be pushed to rotate around the contact point between the fixed rod 111 and the bolt installation surface, the first side rod 110 can only be shortened, thereby compressing the pressure spring 1113, so that the identification tube 1112 slides toward the bottom of the fixed tube 1110. When the identification tube 1112 slides, the corresponding identification surface 11120 area seen through the observation hole 1121 and the positioning hole 1111 will inevitably change, and the tightening degree of the bolt can be judged according to the identification surface 11120 area seen from the positioning hole 1111.

[0042] It should be noted that, since the distance that the limit member 150 can drive the nut to move in a direction parallel to the axial direction of the bolt is very short, the first side rod 110 continues to be pushed to rotate around the contact point between the fixing rod 111 and the bolt mounting surface, and the first side rod 110 will be shortened. Although when the first side rod 110 is pushed, the limit rod will be first pushed through the first connecting rod 130 to drive the nut to move in a direction parallel to the axial direction of the bolt, in the present invention, the distance that the limit member 150 drives the nut to move can be ignored, which is within the allowable range of the present invention.

[0043] In addition, in the present invention, different positions on the marking tube 1112 correspond to different degrees of tightness of the bolt, and a variable preset range can be set artificially according to actual conditions. Generally, the preset range can be determined according to the detection of the existing tightened bolts. When the marking surface 11120 is a color card surface, the preset range is an area of ​​a certain color coated on the outer surface of the marking tube 1112, and when the marking surface 11120 is a scale surface, the preset range is a certain scale range, and more marking surfaces 11120 are not described too much here. Taking the marking surface 11120 as a color card surface as an example, when detecting whether the bolt is loose, if the color observed through the positioning hole 1111 is in the preset range or in the area between the preset range and the bottom of the marking tube 1112, it means that the bolt is tightened, and if it is in the area between the preset range and the tube mouth of the marking tube 1112, it means that the bolt is loose.

[0044] The operating principle of this embodiment is that the fixing rod 111 abuts against the mounting surface of the nut, so that the limiting member 150 abuts against the side wall of the nut and can drive the nut away from the mounting surface of the nut, pushing the first side rod 110 to rotate in the direction close to the center axis of the bolt, thereby driving the fixing rod 111 and the mounting rod 112 to rotate.

[0045] When the mounting rod 112 rotates, the mounting rod 112 can drive the first connecting rod 130 to rotate. The original moving track of the first connecting rod 130 should be a circle with the end of the fixed rod 111 away from the mounting rod 112 as the center and the distance between the first connecting rod 130 and the end of the fixed rod 111 away from the mounting rod 112 as the radius. However, due to the limitation of the stopper 150 and the nut, after the stopper 150 is pressed against the nut, the moving track of the first connecting rod 130 can only move on a plane parallel to the nut mounting surface. If the first side rod 110 is continued to be pushed to rotate, under the action of the first connecting rod 130 and the stopper 150, the first side rod 110 can only be compressed, and the compression action occurs in the observation tube 1120.

[0046] In the observation tube 1120, the identification tube 1112 is pressed against the bottom of the observation tube 1120 by the pressure spring 1113. As the first side rod 110 is shortened, the pressure spring 1113 is compressed, and the observation tube 1120 can push the identification tube 1112 to slide in the fixed tube 1110. When the identification tube 1112 slides, the changes of the identification surface 11120 on the wall of the identification tube 1112 can be seen through the observation hole 1121 and the positioning hole 1111.

[0047] When the identification surface 11120 is a color card surface, the staff can judge the tightness of the bolt by observing the color.

[0048] When the marking surface 11120 is a scale surface, the staff can judge the tightness of the bolt based on the observed scale.

[0049] Taking the identification surface 11120 as the color card surface as an example, a certain color is pre-determined as a preset range, and then the first side rod 110 is pushed in the direction close to the central axis of the bolt. The first side rod 110 drives the first connecting rod 130 to rotate, and then drives the limit member 150 to press against the nut, and continues to push the first side rod 110 to rotate. When the color seen from the positioning hole 1111 is stable within a fixed color area, the color is recorded and compared with the color within the preset range, so as to determine whether the detected bolt is loose.

[0050] In some embodiments, the limiting member 150 may include a limiting frame 151, a clamping plate 152, and a flange 153. The limiting frame 151 is sleeved on the first connecting rod 130, and the first connecting rod 130 can be inserted into the frame opening of the limiting frame 151 and can move along the length direction of the limiting frame 151. The length direction of the limiting frame 151 is parallel to the mounting surface of the nut, the clamping plate 152 is arranged on the limiting frame 151, the clamping plate 152 can be against the side wall of the nut, and the flange 153 is arranged on the side of the clamping plate 152 away from the limiting frame 151, and the flange 153 can be inserted into the gap between the mounting surface of the nut and the nut.

[0051] The limit frame 151 may be a rectangular frame, and the clamping plate 152 may be fixed on the bottom surface of the limit frame 151 by a fixing member, and the fixing member may be a workpiece such as a bolt or a rivet. The side of the clamping plate 152 facing the bolt may be a continuous surface adapted to the side surface of the nut, and the continuous surface is distributed in a broken line. The flange 153 may be a convex ridge, a convex piece, or other sheet-like workpiece that can be inserted into the gap between the nut and the mounting surface of the nut and can be adapted to the gap, and the gap may be the gap between the position where the nut is chamfered and the mounting surface of the nut.

[0052] In this embodiment, the flange 153 is first inserted into the gap between the mounting surface of the nut and the nut and contacts the nut, and then the first side rod 110 is pushed to rotate in the direction close to the central axis of the bolt to be detected. When the first side rod 110 rotates, it can drive the first connecting rod 130 to rotate. Due to the limitation of the flange 153, the limit frame 151 can limit the rotation of the first connecting rod 130, so that the first connecting rod 130 can only move within the frame opening of the limit frame 151. It can be seen from the above-mentioned embodiment that when the first connecting rod 130 moves, the first side rod 110 will be compressed, that is, the pressure spring 1113 is compressed, and the identification tube 1112 will slide in the fixed tube 1110. The change of the identification surface 11120 on the side wall of the identification tube 1112 can be seen through the observation hole 1121 and the positioning hole 1111. According to the change of the identification surface 11120, it is judged whether the detected bolt is loose.

[0053] Furthermore, a reset assembly 200 may be provided in the limit frame 151 , and the reset assembly 200 includes a movable block 210 and a reset spring 220 . The movable block 210 is slidably disposed in the frame opening of the limit frame 151 , and the first connecting rod 130 is rotatably connected to the movable block 210 .

[0054] Specifically, the movable block 210 is a square block, and the upper and lower side surfaces of the movable block 210 are respectively in contact with the inner frame walls on both sides corresponding to the limit frame 151. A slide groove parallel to the length direction of the inner wall on both sides of the limit frame 151 in contact with the movable block 210 can be provided, and a slide bar is fixed on the two corresponding surfaces of the movable block 210, and the slide bar is slidably arranged in the slide groove, so that the movable block 210 can slide along the slide groove in the frame opening of the limit frame 151. The reset spring 220 is fixed at one end of the movable block 210, and the other end of the reset spring 220 is fixed on the inner wall of one end of the limit frame 151 close to the central axis of the bolt. The first connecting rod 130 passes through the movable block 210 and is rotatably connected to the movable block 210.

[0055] When the first side rod 110 is pushed to rotate, the first connecting rod 130 will move in the limit frame 151, and the first connecting rod 130 will drive the movable block 210 to move, thereby compressing the return spring 220. When the force applied to the first side rod 110 is removed, the movable block 210 will be subjected to the rebound force given by the return spring 220, thereby pushing the movable block 210 to move in the direction away from the central axis of the bolt, thereby realizing the reset of the first connecting rod 130 in the limit frame 151.

[0056] In some embodiments, the transmission tower bolt loosening detection device further includes a first telescopic rod 310, which may include an outer rod and an inner rod. One end of the outer rod is provided with a slide groove, one end of the inner rod is inserted into the slide groove and can slide along the length direction of the slide groove, a spring is provided in the slide groove, and the two ends of the spring are respectively fixedly connected to the bottom of the slide groove and one end of the inner rod extending to the slide groove.

[0057] One end of the inner rod away from the inner side of the outer rod is hinged to one end of the fixing rod 111 against the nut mounting surface, thereby realizing the hinge connection between the first telescopic rod 310 and the first side rod 110 .

[0058] The second connecting rod 140 is rotatably provided on the first telescopic rod 310, and a limiting member 150 is slidably provided on the second connecting rod 140. Specifically, the second connecting rod 140 can be rotatably provided on the outer rod side wall of the first telescopic rod 310. The limiting member 150 on the second connecting rod 140 corresponds to the limiting member 150 on the first connecting rod 130, and a guide rail stabilizing member 400 is provided between the first limiting member 150 and the second limiting member 150, and the guide rail stabilizing member 400 is used to maintain that the two limiting members 150 can be synchronously approached or synchronously separated in the same plane.

[0059] The stopper 150 on the second connecting rod 140 corresponds to the stopper 150 on the first connecting rod 130, and the stopper frame 151 in the upper stopper 150 of the second connecting rod 140 is sleeved on the second connecting rod 140, so that the second connecting rod 140 can slide in the frame opening along the length direction of the frame opening of the stopper frame 151. The clamping plate 152 in the upper stopper 150 of the second connecting rod 140 corresponds to the clamping plate 152 in the stopper 150 on the first connecting rod 130, and is located on the side of the nut away from the clamping plate 152 corresponding to the first connecting rod 130.

[0060] The first side rod 110 and the first telescopic rod 310, which are hinged to each other, can form an integral structure, which has two clamping plates 152. When the first side rod 110 or the first telescopic rod 310 is rotated, the limit frame 151 on the first side rod 110 and the limit frame 151 on the first telescopic rod 310 can drive the two clamping plates 152 to hold the nut to be tested, so that the force condition of the nut to be tested is more stable, thereby making the test result more stable and accurate.

[0061] Furthermore, the guide rail stabilizer 400 may include a slide rail 410 and a guide rod 420. The slide rail 410 is arranged on the top of any one of the limit frames 151 of the two limit members 150, and the guide rod 420 is arranged on the top of the other limit frame 151 of the two limit members 150. The length direction of the slide rail 410 and the guide rod 420 are both parallel to the length direction of the limit frame 151, and the guide rod 420 is inserted into the slide rail 410 and is slidably connected to the slide rail 410.

[0062] The setting of the guide rail stabilizer 400 allows the first telescopic rod 310 to rotate synchronously when the first side rod 110 rotates, so that the corresponding limit frame 151 moves synchronously, and then the corresponding clamping plate 152 can clamp the nuts on both sides of the bolt to be tested, making the test result more stable and accurate.

[0063] In some other embodiments, the transmission tower bolt loosening detection device further includes a second side rod 120 and a second telescopic rod 320 .

[0064] The second side rod 120 is arranged at one end of the first connecting rod 130 away from the first mounting rod 112, and the second side rod 120 is rotatably connected to the first connecting rod 130. The length direction of the second side rod 120 is perpendicular to the length direction of the second connecting rod 140. The second side rod 120 and the first side rod 110 are symmetrically arranged with respect to the first connecting rod 130, and the symmetrically arranged first side rod 110 and the second side rod 120 have the same structure. Similarly, the second telescopic rod 320 is arranged at one end of the second connecting rod 140 away from the first telescopic rod 310, and the second telescopic rod 320 is rotatably connected to the second connecting rod 140. The length direction of the second telescopic rod 320 is perpendicular to the length direction of the first telescopic rod 310. The second telescopic rod 320 and the first telescopic rod 310 are symmetrical with respect to the second connecting rod 140, and the symmetrically arranged first side rod 110 and the second side rod 120 also have the same structure.

[0065] The fixing rod 111 of the second side rod 120 is hinged to the second telescopic rod 320, and the hinge points of the fixing rod 111 of the second side rod 120 and the second telescopic rod 320 and the hinge points of the fixing rod 111 of the first side rod 110 and the first telescopic rod 310 correspond to each other. That is, one end of the fixing rod 111 of the second side rod 120 extending to the mounting surface of the nut is hinged to one end of the second telescopic rod 320 extending to the mounting surface of the nut, and the hinge point corresponds to the hinge point of the fixing rod 111 of the first side rod 110 and the first telescopic rod 310.

[0066] The first side bar 110 and the second side bar 120 connected by the first connecting rod 130 can form a relatively stable frame structure, and the first telescopic rod 310 and the second telescopic rod 320 connected by the second connecting rod 140 can also form a relatively stable frame structure. When the first side bar 110 rotates in the direction close to the center axis of the bolt to be detected, the first side bar 110 can drive the frame formed by the second side bar 120 to rotate, and the frame formed by the first telescopic rod 310 and the second telescopic rod 320 is driven to rotate synchronously through the guide rail stabilizer 400, so that the clamping plate 152 corresponding to the first side bar 110 and the clamping plate 152 corresponding to the first telescopic rod 310 can approach each other, and the clamping plates 152 approaching each other can better act on the bolt to be detected, so that the detection result is more accurate.

[0067] Of course, in some embodiments, the second side rod 120, the first telescopic shaft and the second telescopic shaft can all be rod structures that are the same as the first side rod 110. In this case, when the present invention detects whether the bolts are tight, the detection results can be seen through the observation hole 1121 / positioning hole 1111 on any side rod / telescopic shaft, so that when using the present invention, the detection personnel no longer need to move their sight to the first side rod 110, and the detection results are more intuitive.

[0068] In some embodiments, a first bevel gear 500 is sleeved on the mounting rod 112 and fixedly connected to the observation tube 1120 . A transmission mechanism 600 is provided between the first bevel gear 500 and the first connecting rod 130 . The first connecting rod 130 can drive the first bevel gear 500 to rotate through the transmission mechanism 600 .

[0069] The transmission mechanism 600 may include a transmission rack 610, a transmission gear 620, and a second bevel gear 630. The transmission rack 610 is disposed in the frame opening of the limiting frame 151, and the transmission rack 610 is parallel to the length direction of the limiting frame 151. The transmission gear 620 and the second bevel gear 630 are both rotatably disposed on the first connecting rod 130, the transmission gear 620 is meshed with the transmission rack 610, the second bevel gear 630 is fixedly connected with the transmission gear 620, and the second bevel gear 630 is meshed with the first bevel gear 500.

[0070] In this embodiment, the inner side wall of the fixed cylinder 1110 includes a smooth annular surface 1114 and a friction annular surface 1115, and the smooth annular surface 1114 and the friction annular surface 1115 are seamlessly connected. The smooth annular surface 1114 is close to the cylinder mouth of the fixed cylinder 1110 and corresponds to the outer cylinder wall of the identification cylinder 1112. The friction annular surface 1115 is close to the cylinder bottom of the fixed cylinder 1110. When the identification cylinder 1112 moves in the fixed cylinder 1110, the identification cylinder 1112 can slide from the area corresponding to the smooth annular surface 1114 of the fixed cylinder 1110 to the area corresponding to the friction annular surface 1115, and the friction between the friction annular surface 1115 and the side wall of the identification cylinder 1112 is much greater than the friction between the inner top surface of the observation cylinder 1120 and the outer top surface of the identification cylinder 1112. At the same time, the observation cylinder 1120 is a transparent cylinder, and specifically can be a transparent plastic cylinder with high structural strength.

[0071] In this embodiment, the present invention mainly detects bolts with washers. The bolts with washers have elastic washers 700 at their nut ends and flat washers at their nut ends. The detection method of the nut end can be detected by the aforementioned embodiments and this embodiment, and will not be described in detail here; this embodiment mainly detects the tightness of the nut end of the bolt, and the thickness of the elastic washers 700 at the nut end is different.

[0072] When an elastic washer 700 is arranged between the nut and its mounting surface, and the distance between the nut and its mounting surface matches the flange 153 on the clamping plate 152, at this time, if the clamping plate 152 is pressed against the outer wall of the nut, and the flange 153 on the clamping plate 152 is inserted into the gap between the nut and its mounting surface, the first side rod 110 is pushed to rotate in the direction close to the central axis of the bolt, and due to the restriction of the clamping plate 152, the first side rod 110 will be compressed, and the first connecting rod 130 will move in the corresponding limit frame 151. This allows the transmission gear 620 sleeved on the first connecting rod 130 to not only mesh with the transmission rack 610 in the limit frame 151, but also rotate as the first connecting rod 130 moves in the limit frame 151. The transmission gear 620 drives the first bevel gear 500 to rotate through the second bevel gear 630, and the first bevel gear 500 drives the observation tube 1120 to rotate. When the observation tube 1120 rotates, it can drive the identification tube 1112 that contacts the bottom of the inner tube of the observation tube 1120 and the fixed tube 1110 to have a relative displacement, and the identification tube 1112 will enter the area corresponding to the friction ring surface 1115 of the fixed tube 1110. At this time, the identification tube 1112 will not rotate with the observation tube 1120. Afterwards, when the inspection personnel continue to push the first side rod 110 to rotate, they can determine whether the nut or bolt is tightened according to the preset range set in advance.

[0073] When an elastic washer 700 is arranged between the nut and its mounting surface, and the thickness of the elastic washer 700 is greater than the thickness of the flange 153 on the clamping plate 152, the clamping plate 152 is pressed against the side wall of the nut, and the flange 153 at the bottom of the clamping plate 152 is inserted into the gap between the nut and the bolt mounting surface. At this time, there is a gap between the flange 153 at the bottom of the clamping plate 152 and the nut. When the first side rod 110 is pushed to rotate in the direction close to the central axis of the bolt, the clamping plate 152, which should move synchronously with the first side rod 110, can no longer approach the central axis of the bolt because it is pressed against the side of the nut. At this time, the clamping plate 152 can only move along the axial direction of the nut, that is, the flange 153 on the clamping plate 152 will gradually approach the bottom surface of the nut.

[0074] When detecting a bolt with an elastic washer 700, and the thickness of the elastic washer 700 is greater than the thickness of the flange 153 on the clamping plate 152, the state in which the flange 153 on the clamping plate 152 is just inserted between the nut and its mounting surface is defined as the first state. During the movement of the flange 153 on the clamping plate 152 toward the bottom surface of the nut, the first connecting rod 130 will not only move in the direction close to the central axis of the bolt within the limiting frame, but also move in the direction parallel to the central axis of the bolt toward the direction away from the mounting surface of the nut, that is, the first connecting rod 130 will move with the first side rod 110. When the first connecting rod 130 moves in the limiting frame 151, the first connecting rod 130 will drive the transmission gear 620 to move on the transmission rack 610, and then drive the first bevel gear 500 to rotate through the second bevel gear 630, and then drive the observation tube 1120 to rotate. When the observation tube 1120 rotates, it can drive the identification tube 1112 to rotate. It should be noted that the pressure spring 1113 will not be compressed at this time, because the first connecting rod 130 can perform synchronous action with the first side rod 110, the first side rod 110 is not compressed, the identification tube 1112 only rotates, and there is no relative movement between the identification tube 1112 and the fixed tube 1110.

[0075] The state when the flange 153 is in contact with the lower end surface of the nut is defined as the second state, and the process between the first state and the second state is defined as the initial stage. In the initial stage, the clamping plate 152 is against the side of the nut, and the flange 153 is close to the lower bottom surface of the nut. The first connecting rod 130 moves synchronously with the first side rod 110. When the first connecting rod 130 moves in the limit frame 151, it drives the transmission gear 620 thereon to move. The transmission gear 620 meshes with the transmission rack 610 and starts to rotate, thereby driving the second bevel gear 630 and the first bevel gear 500 to rotate. The first bevel gear 500 drives the observation tube 1120 to rotate synchronously, which in turn causes the observation tube 1120 to drive the identification tube 1112 to rotate. In this stage, the pressure spring 1113 will not be compressed.

[0076] The state in which the flange 153 is pressed against the lower end surface of the nut and cannot move toward the direction close to the nut is defined as the third state, and the process between the second state and the third state is defined as the detection stage. In the detection stage, the flange 153 presses against the nut toward one side of the nut. Since the clamping plate 152 presses against the side wall of the nut, when the first side rod 110 is rotated, the first side rod 110 will be compressed, and the compression action occurs in the observation tube 1120. At this time, the pressing spring 1113 is compressed, and the identification tube 1112 will slide to the friction ring surface 1115 area of ​​the fixed tube 1110 under the pressure of the observation tube 1120. When the identification tube 1112 slides to the friction ring surface 1115 area of ​​the fixed tube 1110, the friction between the identification tube 1112 and the friction ring surface 1115 is equal to the friction between the observation tube 1120 and the identification tube 1112, so that the identification tube 1112 no longer rotates with the observation tube 1120. Record the area on the identification surface 11120 corresponding to the positioning hole 1111 after being stretched in a direction parallel to the axial direction of the identification tube 1112, and define this area as the standard area 800. Only the bolt with an elastic washer 700 on one side of the nut has this standard area 800, and elastic washers 700 of different thicknesses correspond to different standard areas 800.

[0077] When the first side rod 110 is continuously pushed to rotate in the direction close to the central axis of the bolt, the marking tube 1112 will gradually approach the bottom of the fixed tube 1110 under the pressure of the observation tube 1120. A certain position on the marking tube 1112 is defined in advance as the judgment point 810. If the judgment point 810 on the marking surface 11120 can be seen through the positioning hole 1111 during the rotation of the first side rod 110 or the positioning hole 1111 passes through the judgment point 810, it means that the bolt is tightened; if at a certain moment during the rotation of the first side rod 110, the first side rod 110 cannot be pushed or the first connecting rod 130 cannot continue to move in the limit frame 151, and the judgment point 810 has not passed through the positioning hole 1111 at this time, it means that the bolt is loose.

[0078] It should be noted that the friction coefficient between the friction ring surface 1115 on the fixed cylinder 1110 and the outer wall of the marking cylinder 1112 is much greater than the friction coefficient between the inner top surface of the observation cylinder 1120 and the outer top surface of the marking cylinder 1112. When the marking cylinder 1112 is not subjected to the pressure applied by the observation cylinder 1120 toward the fixed cylinder 1110, the marking cylinder 1112 is located in the smooth ring surface 1114 area of ​​the fixed cylinder 1110. When the marking cylinder 1112 is subjected to the pressure applied by the observation cylinder 1120 toward the fixed cylinder 1110, the marking cylinder 1112 The identification cylinder 1112 will immediately enter the friction ring surface 1115 area of ​​the fixed cylinder 1110. Although the identification cylinder 1112 will still be affected by the rotational force applied by the observation cylinder 1120 to the identification cylinder 1112 when it just enters the friction ring surface 1115 area of ​​the fixed cylinder 1110, the angle at which the identification cylinder 1112 can continue to rotate after contacting the friction ring surface 1115 of the fixed cylinder 1110 is very small and is within the allowable error range of the invention. Therefore, the possibility of the identification cylinder 1112 continuing to rotate in the friction ring surface 1115 can be ignored.

[0079] In addition, the judgment point 810 can be pre-set according to the existing bolts that are determined to be tightened. Taking the identification surface 11120 on the identification tube 1112 as the color card surface as an example, when detecting the bolt with the elastic washer 700, since the rotation angle of the first side rod 110 and the total amount of compression of the first side rod 110 are positively correlated and increasing, that is, as the first side rod 110 rotates toward the central axis of the bolt, the compression of the first side rod 110 will become smaller and smaller, but the total amount of compression will still gradually increase. Therefore, if the identification surface 11120 of the identification tube 1112 is placed flat, When unfolded on the surface, the color strip on the marking surface 11120 should be a continuous curve that is convex or concave, and as the tightening degree of the bolt increases, that is, the first side rod 110 becomes more and more difficult to rotate, the compression amount of the first side rod 110 becomes smaller and smaller, and the distance that the marking cylinder 1112 moves in the fixed cylinder 1110 becomes shorter and shorter, the color strip will become more and more dense. At this time, the judgment point 810 should be a certain color strip. If the marking surface 11120 is a scale surface, the judgment point 810 should be a certain scale line.

[0080] In addition, it is limited that in the process of the flange 153 on the clamp 152 in the present embodiment approaching and pressing against the bottom surface of the nut, the identification tube 1112 follows the observation tube 1120 and rotates at most one circle in the fixed tube 1110. If the identification tube 1112 rotates more than one circle, it is necessary to replace the present detection device with a thicker flange 153, and re-determine the judgment point 810 on the corresponding identification surface 11120 according to the replaced present detection device to ensure that the flange 153 on the clamp 152 can be pressed against the bottom surface of the nut within one circle of the identification tube 1112.

[0081] In some embodiments, a protective cover 910 for protecting the first bevel gear 500 and the second bevel gear 630 is installed on the mounting rod 112. The protective cover 910 is sleeved on the mounting rod 112 of the first side rod 110, and the protective cover 910 is fixedly connected to the mounting rod 112, and the first bevel gear 500 and the second bevel gear 630 are both located in the protective cover 910. The protective cover 910 is a metal shell, and the protective cover 910 can protect the first bevel gear 500 and the second bevel gear 630, prevent the first bevel gear 500 and the second bevel gear 630 from external damage, and can also prevent the operator from accidentally touching the first bevel gear 500 or the second bevel gear 630 when using the detection nut of the present invention, and the protective cover 910 can play a certain protective role for the detection personnel.

[0082] Furthermore, a handle bar 920 is provided between the first side bar 110 and the second side bar 120, and the handle bar is fixed to an end of the first side bar 110 away from the nut. Similarly, a handle bar 920 is provided between the first telescopic bar 310 and the second telescopic bar 320, and the handle bar 920 is fixed to an end of the first telescopic bar 310 away from the nut.

[0083] Through the handle rod 920, when the staff uses the present invention to detect the tightness of the bolt, first, the first side rod 110 and the second side rod 120 are respectively placed on both sides of the nut, and the hinged end of the first side rod 110 and the second side rod 120 is pressed against the mounting surface of the nut; then, the handle rod 920 is pushed in the direction close to the central axis of the bolt, the clamping plate 152 is pushed and pressed against the nut, and the flange 153 is inserted into the gap between the nut and the nut mounting surface, and then the handle rod 920 is continued to be pushed in the direction close to the central axis of the bolt, so that the tightness of the bolt can be judged.

[0084] The above description is only a specific implementation mode of the present invention, and various examples do not constitute a limitation on the essential content of the present invention.

Claims

1. A transmission tower bolt loosening detection device, characterized in that: include: A first side rod (110), the first side rod (110) comprising a fixing rod (111) and a mounting rod (112), an observation tube (1120) being rotatably mounted on the mounting rod (112), a fixing tube (1110) being mounted on the fixing rod (1111), an end of the fixing rod (1111) away from the fixing tube (1110) being pressed against a mounting surface of a nut, the fixing tube (1110) being inserted into the observation tube (1120) and being able to slide along the axial direction of the observation tube (1120), an identification tube (1112) being arranged in the fixing tube (1110), a pressure spring (1113) being arranged in the identification tube (1112), the pressure spring (1113) being arranged in the fixing tube (1111). The two ends of the marking tube (13) respectively abut against the bottom of the fixing tube (1110) and the bottom of the marking tube (1112); under the action of the pressing spring (1113), the outer bottom surface of the marking tube (1112) abuts against the inner bottom surface of the observation tube (1120); a positioning hole (1111) is provided on the side wall of the fixing tube (1110); an observation hole (1121) communicating with the positioning hole (1111) is provided on the side wall of the observation tube (1120); the outer tube wall of the marking tube (1112) is a marking surface (11120); and the marking surface (11120) can be seen through the observation hole (1121) from the positioning hole (1111); a first connecting rod (130), the first connecting rod (130) being rotatably disposed on the mounting rod (112); A limiting member (150), wherein the limiting member (150) is slidably disposed on the first connecting rod (130), and the limiting member (150) can abut against the nut and drive the nut away from the mounting surface of the nut.

2. A transmission tower bolt loosening detection device according to claim 1, characterized in that: The limiting member (150) comprises a limiting frame (151), a clamping plate (152) and a flange (153); the limiting frame (151) is arranged on the first connecting rod (130) and the first connecting rod (130) is inserted into the frame opening of the limiting frame (151); the length direction of the limiting frame (151) is parallel to the mounting surface of the nut; the first connecting rod (130) can slide along the length direction of the limiting frame (151); the clamping plate (152) is arranged on one side of the limiting frame (151); the clamping plate (152) can abut against the side wall of the nut; the flange (153) is arranged on the side of the clamping plate (152) away from the limiting frame (151); and the gap between the mounting surface of the nut and the nut is adapted to the flange (153).

3. A transmission tower bolt loosening detection device according to claim 2, characterized in that: A reset assembly (200) is arranged in the limit frame (151), and the reset assembly (200) comprises a movable block (210) and a reset spring (220). The movable block (210) is slidably arranged in a frame opening of the limit frame (151), and the first connecting rod (130) is rotatably connected to the movable block (210).

4. A transmission tower bolt loosening detection device according to claim 3, characterized in that: The inner side wall of the fixed cylinder (1110) comprises a smooth annular surface (1114) and a friction annular surface (1115); the smooth annular surface (1114) and the friction annular surface (1115) are seamlessly connected; the smooth annular surface (1114) is close to the cylinder mouth of the fixed cylinder (1110) and corresponds to the outer cylinder wall of the identification cylinder (1112); the friction annular surface (1115) is close to the cylinder bottom of the fixed cylinder (1110); and the identification cylinder (1112) can slide from the smooth annular surface (1114) to the friction annular surface (1115).

5. The transmission tower bolt loosening detection device according to claim 1, characterized in that: The observation tube (1120) is a transparent tube.

6. A transmission tower bolt loosening detection device according to any one of claims 2 to 4, characterized in that: The invention comprises a first telescopic rod (310), wherein the first telescopic rod (310) is hinged to one end of the fixed rod (111) which is pressed against a nut mounting surface, a second connecting rod (140) is rotatably arranged on the first telescopic rod (310), a limiting member (150) is slidably arranged on the second connecting rod (140), the limiting member (150) on the second connecting rod (140) corresponds to the limiting member (150) on the first connecting rod (130), and a guide rail stabilizing member (400) is arranged between the two limiting members (150), and the guide rail stabilizing member (400) is used to maintain the stability of the two limiting members (150) in synchronously approaching or moving away from each other in the same plane.

7. The transmission tower bolt loosening detection device according to claim 6, characterized in that: The guide rail stabilizer (400) comprises a slide rail (410) and a guide rod (420); the slide rail (410) is arranged on any one of the limit frames (151) of the two limit members (150); the guide rod (420) is arranged on the other of the limit frames (151) of the two limit members (150); the length direction of the slide rail (410) and the guide rod (420) are both parallel to the length direction of the limit frame (151); the guide rod (420) is inserted into the slide rail (410) and is slidably connected to the slide rail (410).

8. The transmission tower bolt loosening detection device according to claim 7, characterized in that: The invention comprises a second side rod (120) and a second telescopic rod (320), wherein the second side rod (120) is rotatably connected to an end of the first connecting rod (130) away from the first side rod (110), and the second side rod (120) and the first side rod (110) are symmetrically arranged with respect to the first connecting rod (130); The second telescopic rod (320) is rotatably connected to an end of the second connecting rod (140) away from the first telescopic rod (310), and the second telescopic rod (320) and the first telescopic rod (310) are symmetrically arranged with respect to the second connecting rod (140).

9. A transmission tower bolt loosening detection device according to any one of claims 2 to 5, characterized in that: A first bevel gear (500) is sleeved on the mounting rod (112), and the first bevel gear (500) is fixedly connected to the observation tube (1120). A transmission mechanism (600) is provided between the first bevel gear (500) and the first connecting rod (130), and the first connecting rod (130) can drive the first bevel gear (500) to rotate through the transmission mechanism (600).

10. The transmission tower bolt loosening detection device according to claim 9, characterized in that: The transmission mechanism (600) comprises a transmission rack (610), a transmission gear (620) and a second bevel gear (630); the transmission rack (610) is arranged in a frame opening of the limiting frame (151); the transmission rack (610) is parallel to the length direction of the limiting frame (151); the transmission gear (620) and the second bevel gear (630) are both rotatably arranged on the first connecting rod (130); the transmission gear (620) is meshed with the transmission rack (610); the second bevel gear (630) is fixedly connected to the transmission gear (620); and the second bevel gear (630) is meshed with the first bevel gear (500).

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