A displacement measuring device for anti-floating anchor pull-out test

Abstract

The present invention discloses a displacement measuring device for anti-floating anchor pull-out test, which relates to the field of building construction technology. The device comprises a fixed pressing mechanism and an unfolded threaded rod installed around the fixed pressing mechanism. A measuring mechanism is provided on the top of the fixed pressing mechanism, and a dial indicator is provided inside the measuring mechanism. The fixed pressing mechanism comprises a fixed base, an installation groove is provided at the inner center position of the fixed base, and a pressing rotating rod is rotatably connected to the fixed base near the installation groove. The top of the pressing rotating rod is rotatably connected to a pressing sliding sleeve. Before the anti-floating anchor is subjected to the anti-pull-out test, the surface of the anti-floating anchor is preliminarily marked with ink inside the marking sponge. After the anti-floating anchor is subjected to the anti-pull-out test, the surface of the anti-floating anchor is secondary marked with ink inside the marking sponge. The displacement distance of the anti-floating anchor can be measured by a measuring ruler.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a displacement measuring device for an anti-floating anchor rod pull-out test. Background Art

[0002] At present, anti-floating anchor rods are the most commonly used anti-floating measures for underground structures in construction projects. After the anchor rods are installed, they need to be subjected to pull-out tests. On the one hand, this is used to detect whether the pull-out bearing capacity of the anchor rods meets the test standards, and on the other hand, it is used to detect whether the strength of the anchor rods themselves is qualified.

[0003] Announcement No. CN217716217U discloses a displacement measuring device for anti-floating anchor rods. When the staff installs the anti-floating anchor rod and needs to measure the displacement distance of the anti-floating anchor rod, the installation frame can be fixed to the ground where the anti-floating anchor rod is installed. Then, the two "T"-shaped blocks are pulled away from each other. Then, the "T"-shaped blocks are released. The spring pushes the "T"-shaped blocks and the rubber pad to resist the anti-floating anchor rod. At this time, if the anti-floating anchor rod is displaced, it will push the "T"-shaped block to move. Then, the "T"-shaped block drives the engagement mechanism and the reading mechanism to operate. People can read the displacement distance of the anti-floating anchor rod through the reading mechanism. However, this patent still has the following problems in actual use:

[0004] The displacement measuring device for the pull-out resistance of the anti-floating anchor can only measure the left and right displacement of the anti-floating anchor, but the displacement measurement of the pull-out resistance test of the anti-floating anchor is the displacement of the pull-out of the anti-floating anchor, so it is impossible to accurately measure the displacement of the pull-out of the anti-floating anchor. At the same time, when measuring the displacement of the pull-out resistance test of the anti-floating anchor, since the anchor will be stretched, the measured displacement is inaccurate, thereby affecting the accuracy of the measurement data. At the same time, the displacement of the anchor is measured by a dial indicator in the existing technology, but after the experiment, there is a phenomenon of offset and broken anchored concrete, which causes the position of the dial indicator to change, thereby affecting the accuracy of the measurement data.

[0005] Therefore, a displacement measuring device for anti-floating anchor pull-out test is proposed to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a displacement measuring device for an anti-floating anchor pull-out test, so as to solve the problem that the displacement measurement of the anti-floating anchor pull-out test proposed in the above background technology is the displacement of the anti-floating anchor pulling, so it is impossible to accurately measure the displacement of the anti-floating anchor pulling. At the same time, when measuring the displacement of the anti-floating anchor pull-out test, since the anchor rod will be stretched, the measured displacement is inaccurate, thereby affecting the accuracy of the measurement data. At the same time, in the prior art, the displacement of the anchor rod is measured by a dial indicator, but after the experiment, there is a phenomenon of offset and broken anchored concrete, which causes the position of the dial indicator to change, thereby affecting the accuracy of the measurement data.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a displacement measuring device for anti-floating anchor pull-out test, comprising a fixed clamping mechanism, and an expanded threaded rod installed around the fixed clamping mechanism;

[0008] A measuring mechanism is provided on the top of the fixed pressing mechanism, and a dial indicator is provided inside the measuring mechanism;

[0009] Also includes:

[0010] The fixed pressing mechanism includes a fixed base, a mounting slot is provided at the inner center of the fixed base, and a pressing rotating rod is rotatably connected to the surrounding area of ​​the fixed base near the mounting slot;

[0011] The top of the pressing rotating rod is rotatably connected to a pressing sliding sleeve, and the interior of the pressing sliding sleeve is slidably connected to the pressing sliding rod;

[0012] Wherein, a compression spring is fixedly installed on one side of the compression sliding sleeve, and a compression disc is fixedly installed on the outer side of the compression sliding rod;

[0013] A pressing slider is fixedly installed on the top of the pressing sliding sleeve, a marking bracket is fixedly installed on one side of the pressing slider, a marking slot is opened at the inner center of the marking bracket, a marking telescopic rod is fixedly installed inside the marking slot, a marking spring is slidably connected to the outer side of the marking telescopic rod, a marking sliding rod is fixedly installed on the ends of the marking telescopic rod and the marking spring, and a marking sponge is fixedly installed on the end of the marking sliding rod;

[0014] A fixed support is fixedly installed on the top of the pressing slider, a pressing bracket is fixedly installed on the top of the fixed support, an adjusting sliding rod is fixedly installed inside the pressing bracket, an adjusting sliding sleeve is slidably connected to the outer side of the adjusting sliding rod, and an adjusting spring is fixedly installed on one side of the adjusting sliding sleeve;

[0015] A first rotating support is fixedly installed on the outer side of the adjusting sliding sleeve, an adjusting rotating rod is rotatably connected to the outer side of the first rotating support, an end of the adjusting rotating rod is rotatably connected to the second rotating support, a third rotating support is rotatably connected to the top of the pressing bracket, and a pressing plate is fixedly installed on the outer sides of the second and third rotating supports;

[0016] The expansion threaded rod is rotatably connected to the top of the fixed base, an expansion knob is fixedly installed on the top of the expansion threaded rod, an outer side of the expansion threaded rod is threadedly connected to an expansion sliding disk, the bottom of the expansion sliding disk is rotatably connected to the expansion rotating rod, and the bottom of the expansion rotating rod is rotatably connected to the expansion sliding sleeve;

[0017] An expansion spring is fixedly installed on one side of the expansion sliding sleeve, and an expansion sliding rod is slidably connected to the inside of the expansion sliding sleeve. The expansion sliding rod is symmetrically installed on the four sides of the inner part of the fixed base. An expansion limit block is fixedly installed on the bottom of the expansion sliding sleeve, and an expansion leg is fixedly installed on the bottom of the expansion limit block. The ends of the expansion legs are threadedly connected to a plurality of expansion nails.

[0018] Preferably, the measuring mechanism includes a measuring top plate, a lifting cylinder is fixedly installed at the bottom center position of the measuring top plate, a lifting plate is fixedly installed at the bottom of the lifting cylinder, a lifting sliding sleeve is fixedly installed around the lifting plate, the lifting sliding sleeve is internally slidably connected to a lifting sliding rod, and the lifting sliding rod is fixedly installed around the top of the fixed base.

[0019] Preferably, compression columns are fixedly installed around the bottom of the lifting plate, a tightening bracket is fixedly installed at the bottom center of the lifting plate, a mounting plate is fixedly installed at the bottom center of the tightening bracket, an electric telescopic rod is fixedly installed at the bottom of the mounting plate, the dial indicator is fixedly installed at the bottom of the electric telescopic rod, and a tightening motor is fixedly installed on the inner side of the top of the tightening bracket.

[0020] Preferably, the output end of the tightening motor is fixedly connected to the first bevel gear, the bottom of the first bevel gear is meshed with the second bevel gear, the end of the second bevel gear is fixedly connected to the tightening threaded rod, the outer side of the tightening threaded rod is threadedly connected to the tightening threaded sleeve, the bottom of the tightening threaded sleeve is fixedly installed with a tightening limit block, the bottom of the tightening limit block is fixedly installed with a tightening rod, and the end of the tightening rod is fixedly connected to a tightening plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the displacement measuring device for the pull-out test of the anti-floating anchor rod uses the ink inside the marking sponge to make a preliminary mark on the surface of the anti-floating anchor rod before the pull-out test of the anti-floating anchor rod; after the pull-out test of the anti-floating anchor rod, the ink inside the marking sponge is used to make a secondary mark on the surface of the anti-floating anchor rod; the displacement distance of the anti-floating anchor rod can be measured by a measuring ruler; the characteristics of the meshing connection between the first bevel gear and the second bevel gear can be used to realize the rotation of the tightening threaded rod, so that the tightening threaded sleeve moves relatively under the action of the tightening limit block, and drives the tightening rod and the tightening plate to gather together, so that the compression plate can be reinforced for a secondary time. The specific contents are as follows:

[0022] 1. By setting up a fixed pressing mechanism, not only can the mounting groove at the center position inside the fixed base be used to facilitate the pull-out test of the anti-floating anchor rod, but at the same time, the pressing plate is squeezed by the pressing column to make the pressing plate drop. At the same time, under the action of the pressing rotating rod, the pressing sliding sleeve slides relatively on the outside of the pressing sliding rod, and at the same time, the pressing slider and the marking bracket can be driven to move relative to each other. The marking telescopic rod and the marking spring inside the marking bracket are used to realize the movement of the marking sliding rod. Before the anti-floating anchor rod is subjected to the pull-out test, the surface of the anti-floating anchor rod is preliminarily marked with the ink inside the marking sponge. After the anti-floating anchor rod is subjected to the pull-out test, the surface of the anti-floating anchor rod is secondary marked with the ink inside the marking sponge. The displacement distance of the anti-floating anchor rod can be measured by a measuring ruler. After the anti-floating anchor rod is subjected to the pull-out test, the anti-floating anchor rod will undergo elastic or plastic deformation. The cam is then moved back and forth to the left of the cam, and the cam is then moved back and forth to the right of the cam, and the cam is then moved back and forth to the left of the cam, and the cam is then moved back and forth to the right of the cam, and the cam is then moved back and forth to the right of the cam.

[0023] 2. By setting up the measuring mechanism, not only can the lifting cylinder be used to drive the lifting plate to stably lift and move under the limiting action of the lifting sliding sleeve and the lifting sliding rod, but the clamping column can be used to press the clamping plate downward, which is convenient for gathering the clamping plate and marking the marking sponge. The electric telescopic rod is used to drive the dial indicator to move up and down, so as to realize the distance measurement before and after the anti-floating anchor test. At the same time, when the clamping plate is gathered, the tightening motor is started to drive the first bevel gear to rotate. The meshing connection between the first bevel gear and the second bevel gear is used to realize the rotation of the tightening threaded rod, so that the tightening threaded sleeve moves relatively under the action of the tightening limit block, and drives the tightening rod and the tightening plate to gather together, which can perform secondary reinforcement on the clamping plate, improve the gathering effect of the clamping plate, facilitate the gathering and restraint of the stretched anti-floating anchor, and improve the accuracy of measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0025] Figure 2 Schematic diagram of the three-dimensional structure of the fixed pressing mechanism in the present invention;

[0026] Figure 3 Schematic diagram of the three-dimensional structure of the compression plate cross section in the present invention;

[0027] Figure 4 Schematic diagram of the three-dimensional structure of the compression plate in the present invention;

[0028] Figure 5 Schematic diagram of the three-dimensional structure of the cross section of the marking bracket in the present invention;

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of the deployed legs and deployed ground spikes in the present invention;

[0030] Figure 7 Schematic diagram of the three-dimensional structure of the measuring mechanism in the present invention;

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of the lifting plate and the lifting sliding sleeve in the present invention;

[0032] Figure 9 This is a schematic diagram of the three-dimensional structure of the tightening bracket in the present invention;

[0033] Figure 10 Schematic diagram of the three-dimensional structure of the tightening plate in the present invention;

[0034] Figure 11 For the present invention Figure 10 Schematic diagram of the enlarged structure of area A in the middle.

[0035] In the figure: 1. Fixed pressing mechanism; 101. Fixed base; 102. Mounting groove; 103. Pressing rotating rod; 104. Pressing sliding sleeve; 105. Pressing sliding rod; 106. Pressing spring; 107. Pressing plate; 108. Pressing slide; 109. Marking bracket; 110. Marking slide; 111. Marking telescopic rod; 112. Marking spring; 113. Marking sliding rod; 114. Marking sponge; 115. Fixed support; 116. Pressing bracket; 117. Adjusting sliding rod; 118. Adjusting sliding sleeve; 119. Adjusting spring; 120. First rotating support; 121. Adjusting rotating rod; 122. Second rotating support; 123. Third rotating support; 124. Pressing plate; 125. Expanding threaded rod; 126. 1. Expand the knob; 127. Expand the sliding plate; 128. Expand the rotating rod; 129. Expand the sliding sleeve; 130. Expand the spring; 131. Expand the sliding rod; 132. Expand the limit block; 133. Expand the legs; 134. Expand the ground nail; 2. Measuring mechanism; 201. Measuring top plate; 202. Lifting cylinder; 203. Lifting plate; 204. Lifting sliding sleeve; 205. Lifting sliding rod; 206. Clamping column; 207. Tightening bracket; 208. Mounting plate; 209. Electric telescopic rod; 210. Dial indicator; 211. Tightening motor; 212. First bevel gear; 213. Second bevel gear; 214. Tightening threaded rod; 215. Tightening threaded sleeve; 216. Tightening limit block; 217. Tightening rod; 218. Tightening plate. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 5The present invention provides a technical solution: a displacement measuring device for anti-floating anchor pull-out test, comprising a fixed pressing mechanism 1, and an unfolded threaded rod 125 installed around the fixed pressing mechanism 1, a measuring mechanism 2 is provided on the top of the fixed pressing mechanism 1, and a dial indicator 210 is provided inside the measuring mechanism 2, the fixed pressing mechanism 1 comprises a fixed base 101, a mounting groove 102 is provided at the inner center position of the fixed base 101, and the fixed base 101 is rotatably connected to the mounting groove 102 around the four sides thereof. A tightening rotating rod 103 is rotatably connected to the top of the tightening rotating rod 103 with a tightening sliding sleeve 104, and a tightening sliding rod 105 is slidably connected to the inside of the tightening sliding sleeve 104, wherein a tightening spring 106 is fixedly installed on one side of the tightening sliding sleeve 104, a tightening disc 107 is fixedly installed on the outside of the tightening sliding rod 105, a tightening slider 108 is fixedly installed on the top of the tightening sliding sleeve 104, and a marking bracket 109 is fixedly installed on one side of the tightening slider 108, and the inner center of the marking bracket 109 is fixedly installed. A marking slot 110 is provided at the position, a marking telescopic rod 111 is fixedly installed inside the marking slot 110, a marking spring 112 is slidably connected to the outside of the marking telescopic rod 111, a marking sliding rod 113 is fixedly installed at the ends of the marking telescopic rod 111 and the marking spring 112, a marking sponge 114 is fixedly installed at the end of the marking sliding rod 113, and the mounting slot 102 at the center position inside the fixed base 101 is convenient for the pull-out test of the anti-floating anchor rod, and at the same time, the compression plate is squeezed by the compression column 206 107, while the clamping plate 107 is lowered, under the action of the clamping rotating rod 103, the clamping sliding sleeve 104 slides relatively on the outside of the clamping sliding rod 105, and at the same time, it can drive the clamping slider 108 and the marking bracket 109 to move relative to each other, and the marking telescopic rod 111 and the marking spring 112 inside the marking bracket 109 are used to realize the movement of the marking sliding rod 113. Before the anti-floating anchor rod is subjected to the pull-out test, the ink inside the marking sponge 114 is used to make a preliminary mark on the surface of the anti-floating anchor rod.

[0038] See also Figure 4-Figure 5, a fixed support 115 is fixedly installed on the top of the pressing slider 108, a pressing bracket 116 is fixedly installed on the top of the fixed support 115, an adjusting sliding rod 117 is fixedly installed inside the pressing bracket 116, an adjusting sliding sleeve 118 is slidably connected to the outside of the adjusting sliding rod 117, an adjusting spring 119 is fixedly installed on one side of the adjusting sliding sleeve 118, a first rotating support 120 is fixedly installed on the outside of the adjusting sliding sleeve 118, an adjusting rotating rod 121 is rotatably connected to the outside of the first rotating support 120, and a second rotating support 122 is rotatably connected to the end of the adjusting rotating rod 121. The top of the pressing bracket 116 is rotatably connected to the third rotating support 123, and the outsides of the second rotating support 122 and the third rotating support 123 are fixedly installed. The compression plate 124, after the anti-floating anchor rod undergoes the pull-out test, the ink inside the marking sponge 114 is used to make a secondary mark on the surface of the anti-floating anchor rod, and the displacement distance of the anti-floating anchor rod can be measured by a measuring ruler. After the anti-floating anchor rod undergoes the pull-out test, the anti-floating anchor rod will undergo elastic or plastic deformation, so the anti-floating anchor rod will undergo a certain degree of bending after being stretched. By moving the compression slider 108 inward, when the bottom of the compression plate 124 contacts the anti-floating anchor rod, the sliding connection between the adjusting sliding sleeve 118 and the adjusting sliding rod 117 is used to realize the rotation of the adjusting rotating rod 121, thereby realizing the mutual gathering of the compression plates 124, and the bent anti-floating anchor rod can be preliminarily compressed and bound, which is convenient for measuring the anti-floating anchor rod after the test.

[0039] See also Figure 2 、 Figure 6, the unfolding threaded rod 125 is rotatably connected to the top of the fixed base 101, and the top of the unfolding threaded rod 125 is fixedly installed with an unfolding knob 126, and the outer side of the unfolding threaded rod 125 is threadedly connected to an unfolding sliding disk 127, and the bottom of the unfolding sliding disk 127 is rotatably connected to the unfolding rotating rod 128, and the bottom of the unfolding rotating rod 128 is rotatably connected to the unfolding sliding sleeve 129, and an unfolding spring 130 is fixedly installed on one side of the unfolding sliding sleeve 129, and the interior of the unfolding sliding sleeve 129 is slidably connected to the unfolding sliding rod 131, and the unfolding sliding rod 131 is symmetrically installed around the interior of the fixed base 101, and the bottom of the unfolding sliding sleeve 129 is fixedly installed with an unfolding limit block 132. The bottom of the block 132 is fixedly installed with an expansion leg 133, and the end of the expansion leg 133 is threadedly connected to a number of expansion nails 134. By turning the expansion knob 126, the expansion threaded rod 125 is driven to rotate, so that the expansion sliding disk 127 is lifted and lowered on the outside of the expansion threaded rod 125. Under the action of the expansion rotating rod 128, the expansion sliding sleeve 129 can slide on the outside of the expansion sliding rod 131 while driving the expansion legs 133 and the expansion nails 134 to move relative to each other, and the expansion nails 134 are used to fix the fixed base 101, so as to avoid the movement of the fixed base 101 after the pull-out test of the anti-floating anchor rod, thereby affecting the accuracy of the displacement measurement.

[0040] See also Figure 1-Figure 5 、 Figure 7-Figure 9 The measuring mechanism 2 includes a measuring top plate 201, a lifting cylinder 202 is fixedly installed at the bottom center of the measuring top plate 201, a lifting plate 203 is fixedly installed at the bottom of the lifting cylinder 202, a lifting sliding sleeve 204 is fixedly installed around the lifting plate 203, a lifting sliding rod 205 is slidably connected inside the lifting sliding sleeve 204, the lifting sliding rod 205 is fixedly installed around the top of the fixed base 101, a pressing column 206 is fixedly installed around the bottom of the lifting plate 203, a tightening bracket 207 is fixedly installed at the bottom center of the lifting plate 203, and the bottom of the tightening bracket 207 is fixedly installed. A mounting plate 208 is fixedly installed at the center position of the part, an electric telescopic rod 209 is fixedly installed at the bottom of the mounting plate 208, and a dial indicator 210 is fixedly installed at the bottom of the electric telescopic rod 209. The lifting cylinder 202 is used to drive the lifting plate 203 to stably move up and down under the limiting action of the lifting sliding sleeve 204 and the lifting sliding rod 205. The clamping column 206 is used to press down the clamping plate 107 to facilitate the gathering of the clamping plate 124 and the marking of the marking sponge 114. The dial indicator 210 is driven to move up and down by the electric telescopic rod 209, so that the distance measurement before and after the anti-floating anchor test can be realized.

[0041] See also Figure 4-11A tightening motor 211 is fixedly installed on the inner side of the top of the tightening bracket 207, and the output end of the tightening motor 211 is fixedly connected to the first bevel gear 212. The bottom of the first bevel gear 212 is meshed with the second bevel gear 213. The end of the second bevel gear 213 is fixedly connected to a tightening threaded rod 214. The outer side of the tightening threaded rod 214 is threadedly connected to a tightening threaded sleeve 215. A tightening limit block 216 is fixedly installed on the bottom of the tightening threaded sleeve 215. A tightening rod 217 is fixedly installed on the bottom of the tightening limit block 216. The end of the tightening rod 217 is fixedly connected to the tightening rod 214. The tightening plate 218 starts the tightening motor 211 to drive the first bevel gear 212 to rotate when the clamping plate 124 is being gathered. By utilizing the characteristics of the meshing connection between the first bevel gear 212 and the second bevel gear 213, the tightening threaded rod 214 can be rotated, so that the tightening threaded sleeve 215 moves relative to each other under the action of the tightening limit block 216, and drives the tightening rod 217 and the tightening plate 218 to gather together, which can perform secondary reinforcement on the clamping plate 124, improve the gathering effect of the clamping plate 124, facilitate the gathering and restraining of the stretched anti-floating anchor rod, and improve the accuracy of the measurement.

[0042] Working principle: Before using this displacement measuring device for anti-floating anchor pull-out test, it is necessary to check the overall condition of the device to ensure that it can work normally. Figure 1 - Figure 11 As shown, first, the mounting groove 102 at the center position of the fixed base 101 is used to facilitate the pull-out test of the anti-floating anchor rod, and at the same time, the pressing plate 107 is squeezed by the pressing column 206 to make the pressing plate 107 descend. At the same time, under the action of the pressing rotating rod 103, the pressing sliding sleeve 104 slides relatively on the outside of the pressing sliding rod 105, and at the same time, it can drive the pressing slider 108 and the marking bracket 109 to move relative to each other, and the marking telescopic rod 111 and the marking spring 112 inside the marking bracket 109 are used to realize the movement of the marking sliding rod 113. Before the anti-floating anchor rod is subjected to the pull-out test, the ink inside the marking sponge 114 is used to make a preliminary mark on the surface of the anti-floating anchor rod. When the anti-floating anchor rod is subjected to the pull-out test, the ink inside the marking sponge 114 is used to make a preliminary mark on the surface of the anti-floating anchor rod. After the pull-out test, the ink inside the marking sponge 114 is used to mark the surface of the anti-floating anchor rod for the second time, and the displacement distance of the anti-floating anchor rod can be measured by a measuring ruler. After the anti-floating anchor rod undergoes the pull-out test, the anti-floating anchor rod will undergo elastic or plastic deformation, so the anti-floating anchor rod will bend to a certain extent after being stretched. By moving the clamping slider 108 inward, when the bottom of the clamping plate 124 contacts the anti-floating anchor rod, the sliding connection between the adjusting sliding sleeve 118 and the adjusting sliding rod 117 can be used to realize the rotation of the adjusting rotating rod 121, thereby realizing the mutual gathering of the clamping plates 124, and performing preliminary compression and binding on the bent anti-floating anchor rod, which is convenient for measuring the anti-floating anchor rod after the test.

[0043] Secondly, by rotating the expansion knob 126, the expansion threaded rod 125 is driven to rotate, so that the expansion sliding disk 127 is lifted and lowered on the outside of the expansion threaded rod 125. Under the action of the expansion rotating rod 128, the expansion sliding sleeve 129 can slide on the outside of the expansion sliding rod 131 while driving the expansion legs 133 and the expansion ground nails 134 to move relative to each other, and the expansion ground nails 134 are used to fix the fixed base 101, so as to avoid the movement of the fixed base 101 after the pull-out test of the anti-floating anchor rod, thereby affecting the accuracy of the displacement measurement.

[0044] Finally, the lifting cylinder 202 is used to drive the lifting plate 203 to stably move up and down under the limiting action of the lifting sliding sleeve 204 and the lifting sliding rod 205, and the pressing column 206 is used to press the pressing plate 107 downward to facilitate the gathering of the pressing plate 124 and the marking of the marking sponge 114. The electric telescopic rod 209 drives the dial indicator 210 to move up and down, which can realize the distance measurement before and after the anti-floating anchor test. At the same time, when the pressing plate 124 is gathered, the tightening motor 211 is started. By driving the first bevel gear 212 to rotate and utilizing the characteristics of the meshing connection between the first bevel gear 212 and the second bevel gear 213, the rotation of the tightening threaded rod 214 can be realized, so that the tightening threaded sleeve 215 moves relative to each other under the action of the tightening limit block 216, and drives the tightening rod 217 and the tightening plate 218 to gather together, which can perform secondary reinforcement on the clamping plate 124, improve the gathering effect of the clamping plate 124, facilitate the gathering and restraint of the stretched anti-floating anchor rod, and improve the accuracy of the measurement.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A displacement measuring device for an anti-floating anchor pull-out test, comprising a fixed pressing mechanism (1), and an expanded threaded rod (125) mounted around the fixed pressing mechanism (1); A measuring mechanism (2) is provided on the top of the fixed pressing mechanism (1), and a dial indicator (210) is provided inside the measuring mechanism (2); It is characterized by: Also includes: The fixed pressing mechanism (1) comprises a fixed base (101), a mounting groove (102) is provided at the inner center of the fixed base (101), and a pressing rotating rod (103) is rotatably connected to the surrounding of the fixed base (101) near the mounting groove (102); The top of the pressing rotating rod (103) is rotatably connected to a pressing sliding sleeve (104), and the interior of the pressing sliding sleeve (104) is slidably connected to a pressing sliding rod (105); A compression spring (106) is fixedly mounted on one side of the compression sliding sleeve (104), and a compression disc (107) is fixedly mounted on the outer side of the compression sliding rod (105); A pressing slider (108) is fixedly mounted on the top of the pressing sliding sleeve (104), a marking bracket (109) is fixedly mounted on one side of the pressing slider (108), a marking slot (110) is provided at the inner center of the marking bracket (109), a marking telescopic rod (111) is fixedly mounted inside the marking slot (110), a marking spring (112) is slidably connected to the outer side of the marking telescopic rod (111), a marking sliding rod (113) is fixedly mounted on the ends of the marking telescopic rod (111) and the marking spring (112), and a marking sponge (114) is fixedly mounted on the end of the marking sliding rod (113); A fixed support (115) is fixedly installed on the top of the pressing slider (108), a pressing bracket (116) is fixedly installed on the top of the fixed support (115), an adjusting sliding rod (117) is fixedly installed inside the pressing bracket (116), an adjusting sliding sleeve (118) is slidably connected to the outside of the adjusting sliding rod (117), and an adjusting spring (119) is fixedly installed on one side of the adjusting sliding sleeve (118); A first rotating support (120) is fixedly mounted on the outer side of the adjusting sliding sleeve (118); an adjusting rotating rod (121) is rotatably connected to the outer side of the first rotating support (120); an end of the adjusting rotating rod (121) is rotatably connected to a second rotating support (122); a top of the pressing bracket (116) is rotatably connected to a third rotating support (123); and a pressing plate (124) is fixedly mounted on the outer sides of the second rotating support (122) and the third rotating support (123); The expansion threaded rod (125) is rotatably connected to the top of the fixed base (101), an expansion knob (126) is fixedly installed on the top of the expansion threaded rod (125), the outer side of the expansion threaded rod (125) is threadedly connected to the expansion sliding disk (127), the bottom of the expansion sliding disk (127) is rotatably connected to the expansion rotating rod (128), and the bottom of the expansion rotating rod (128) is rotatably connected to the expansion sliding sleeve (129); An expansion spring (130) is fixedly installed on one side of the expansion sliding sleeve (129), an expansion sliding rod (131) is slidably connected inside the expansion sliding sleeve (129), and the expansion sliding rod (131) is symmetrically installed around the inside of the fixed base (101). An expansion limit block (132) is fixedly installed on the bottom of the expansion sliding sleeve (129), and an expansion leg (133) is fixedly installed on the bottom of the expansion limit block (132), and the end of the expansion leg (133) is threadedly connected to a plurality of expansion nails (134).

2. A displacement measuring device for anti-floating anchor pull-out test according to claim 1, characterized in that: The measuring mechanism (2) comprises a measuring top plate (201), a lifting cylinder (202) is fixedly mounted at the bottom center of the measuring top plate (201), a lifting plate (203) is fixedly mounted at the bottom of the lifting cylinder (202), a lifting sliding sleeve (204) is fixedly mounted around the lifting plate (203), a lifting sliding rod (205) is slidably connected inside the lifting sliding sleeve (204), and the lifting sliding rod (205) is fixedly mounted around the top of the fixed base (101).

3. A displacement measuring device for anti-floating anchor pull-out test according to claim 2, characterized in that: The bottom of the lifting plate (203) is fixedly mounted with a clamping column (206) around its periphery, the bottom center of the lifting plate (203) is fixedly mounted with a tightening bracket (207), the bottom center of the tightening bracket (207) is fixedly mounted with a mounting plate (208), the bottom of the mounting plate (208) is fixedly mounted with an electric telescopic rod (209), the dial indicator (210) is fixedly mounted on the bottom of the electric telescopic rod (209), and the top inner side of the tightening bracket (207) is fixedly mounted with a tightening motor (211).

4. A displacement measuring device for anti-floating anchor pull-out test according to claim 3, characterized in that: The output end of the tightening motor (211) is fixedly connected to a first bevel gear (212); the bottom of the first bevel gear (212) is meshed with a second bevel gear (213); the end of the second bevel gear (213) is fixedly connected to a tightening threaded rod (214); the outer side of the tightening threaded rod (214) is threadedly connected to a tightening threaded sleeve (215); a tightening limit block (216) is fixedly installed at the bottom of the tightening threaded sleeve (215); a tightening rod (217) is fixedly installed at the bottom of the tightening limit block (216); and the end of the tightening rod (217) is fixedly connected to a tightening plate (218).

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