Water conservancy project crack change quantitative monitoring device

Abstract

The invention discloses a hydraulic engineering crack change quantitative monitoring device, which comprises a protection lubrication mechanism and a monitoring measurement mechanism, and is characterized in that the protection lubrication mechanism comprises a main equipment box, and the main equipment box is internally provided with a part storage groove and a liquid storage backflow groove. According to the quantitative monitoring device for the crack change of the water conservancy project, the protection lubricating mechanism and the monitoring and measuring mechanism are used in a combined mode, and the protection lubricating mechanism and the monitoring and measuring mechanism can be installed on the upper portion and the lower portion of a crack of a building surface correspondingly; then under the action of a circular distance measuring rod, a rectangular sliding sleeve and a round sliding piece, a displacement plate and a positioning ring can also conduct the same displacement along with the change of the crack in real time, and when a worker records data, the worker only needs to observe an annular notch groove and scale grooves in the surfaces of the circular distance measuring rod and the rectangular sliding sleeve through a window in the front portion.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering monitoring technology, specifically to a quantitative monitoring device for changes in cracks in water conservancy engineering. Background Technology

[0002] Water conservancy projects are systematic projects used to control and allocate natural water resources, including surface water, groundwater, and rainwater, with the aim of preventing floods and droughts, meeting the water needs for domestic and industrial use, and improving the water environment. Water conservancy projects can be classified according to their functions as follows: flood control projects: defending against floods through facilities such as dikes and river regulation; farmland water conservancy projects: including irrigation and drainage systems; hydropower projects: generating electricity using hydropower; and water supply and drainage projects: providing water for cities and industries and treating wastewater.

[0003] In existing water conservancy projects, if cracks appear in dams or cast-in-place waterproof structures, specialized instruments are generally required for detection to ensure construction safety. Current detection methods involve irradiating the cracks with a detector to obtain data, which, while simple and accurate, has significant drawbacks in practical application, such as: Crack detection instruments can only be operated manually by staff on a temporary basis. In order to obtain specific values ​​after crack changes, it is necessary to conduct multi-directional detection through the instrument. This makes the detection of a single crack too cumbersome and cannot effectively and timely achieve the purpose of crack monitoring. Only temporary detection can be performed. This operation method makes the daily observation and recording of staff more cumbersome and increases their workload. Therefore, a quantitative monitoring device for crack changes in water conservancy projects is now being designed to improve work efficiency and address this deficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a quantitative monitoring device for crack changes in water conservancy projects, which solves the problems of cumbersome operation and heavy workload associated with existing crack monitoring equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a quantitative monitoring device for crack changes in hydraulic engineering, comprising a protective lubrication mechanism and a monitoring and measuring mechanism. The protective lubrication mechanism includes a main equipment box, the interior of which is respectively provided with a component storage tank and a liquid return tank. A rectangular movable opening penetrating into the component storage tank is provided on the top of the main equipment box. Vertical guide slide plates are fixedly connected to both sides of the bottom of the component storage tank through fixing blocks. A leakage tank penetrating into the liquid return tank is provided at the bottom of the component storage tank. The monitoring and measuring mechanism is installed inside the component storage tank.

[0006] Preferably, the front and rear parts of the inner cavity of the component storage slot are fixedly connected to a square shrink frame by a fixing plate. Guide rods are fixedly connected to both sides of the inner cavity of the square shrink frame. A guide slide plate is slidably installed between the surfaces of the two guide rods. A correction insert plate is fixedly connected to the opposite side of the guide slide plate at the front and rear. A first spring is sleeved on the surface of the guide rod. Both ends of the guide slide plate pass through the square shrink frame and extend to both sides of the square shrink frame. A hollow frame is fixedly connected to one end of the guide slide plate extending to both sides of the square shrink frame.

[0007] Preferably, a spray pipe is fixedly connected to the upper left side of the main equipment box through an opening. Both ends of the spray pipe are fixedly connected to the right side of the inner cavity of the component storage slot through fixing blocks. Arc-shaped guide frames are fixedly connected to both sides of the top of the inner cavity of the component storage slot. An arc-shaped sealing plate that cooperates with the rectangular moving port is slidably installed between the inner sides of the two arc-shaped guide frames.

[0008] Preferably, a circular sealing cylinder is fixedly connected to the left side of the inner cavity of the liquid storage return tank through an opening. A liquid guide pipe is fixedly connected to the left side of the circular sealing cylinder through an opening, and the end of the liquid guide pipe away from the circular sealing cylinder is connected to the horizontal spray pipe. A motor is fixedly installed on the right side of the main equipment box through a bracket. The output shaft of the motor is fixedly connected to a rotating rod through a coupling. The left end of the rotating rod passes through the main equipment box and extends to the inner side of the circular sealing cylinder. A screw conveyor blade is fixedly installed on the surface of the rotating rod.

[0009] Preferably, the front and rear parts of the top sides of the liquid storage return tank are fixedly connected to the blocking rods by fixing blocks, and the liquid blocking plates are slidably installed between the surfaces of the four blocking rods. The front and rear parts of the top sides of the liquid storage return tank are rotatably installed with lifting rods by rotating parts, and the lifting rods are in contact with the bottom of the liquid blocking plates.

[0010] Preferably, a rebound rod is slidably installed on the front and rear parts of both sides of the bottom of the component storage groove through openings. A bottom pressure rod is fixedly connected between the bottom ends of the two rebound rods on the same side, and the bottom pressure rod is in contact with the top end of the lifting rod. A concave frame is fixedly connected between the top ends of the two rebound rods on the same side, and the concave frame is sleeved on the surface of the vertical guide slide plate. A second spring is sleeved on the surface of the rebound rod.

[0011] Preferably, the monitoring and measuring mechanism includes two rectangular sliding sleeves, which are slidably mounted on the surface of a vertical guide slide plate. A circular measuring rod is fixedly connected between the two rectangular sliding sleeves by a fixing block. The top of the circular measuring rod has a strip groove extending to the bottom. Both sides of the surface of the circular measuring rod are equipped with circular sliding pieces that are slidably connected to the strip groove. A displacement plate is rotatably connected between the two circular sliding pieces by a bearing. The top of the displacement plate passes through an arc-shaped sealing plate and extends to the upper part of the main equipment box. A positioning ring is provided at the end of the displacement plate extending to the upper part of the main equipment box. An annular groove is provided on the opposite side of the two circular sliding pieces. A double inclined pressure plate that cooperates with the hollow frame is fixedly connected to one side of the rectangular sliding sleeve by a fixing block.

[0012] Preferably, a threaded rod is provided on the inner side of the positioning ring, and a double-hole plate is fixedly connected to the rear end of the threaded rod. Nut sleeves are threadedly connected to the surface of the threaded rod at both the front and rear parts of the positioning ring.

[0013] This invention provides a quantitative monitoring device for crack changes in hydraulic engineering projects. Compared with existing technologies, it has the following advantages: (1) The quantitative monitoring device for crack changes in this water conservancy project combines the protective lubrication mechanism and the monitoring and measurement mechanism. The two mechanisms can be installed on the upper and lower parts of the cracks on the building surface, respectively. Then, through the action of the circular measuring rod, the rectangular sliding sleeve and the circular sliding plate, the displacement plate and the positioning ring can move in the same way as the crack changes in real time. When the staff records the data, they only need to observe the annular groove and the scale groove on the surface of the circular measuring rod and the rectangular sliding sleeve through the front window to quickly know the displacement direction and displacement distance of the crack. There is no need to use instruments for multi-directional detection, which improves the efficiency of the work.

[0014] (2) The quantitative monitoring device for crack changes in this water conservancy project is used by setting a circular sealing cylinder and auger blades inside the liquid storage return tank, and using a circular arc guide frame and a circular arc sealing plate. The setting of these structures can utilize the curvature fit of the circular arc sealing plate inside the circular arc guide frame so that when the displacement plate moves or rotates back and forth with the building surface, the circular arc guide frame can also be used to limit the circular arc sealing plate to move and rotate, so that the circular arc sealing plate always blocks the rectangular moving opening and prevents external impurities from entering the inner side of the component storage tank. The auger blades can spray the lubricating oil inside the liquid storage return tank through the liquid guide pipe and the liquid spray horizontal pipe onto the inner side of the component storage tank, lubricating the components inside the component storage tank and improving the sensitivity of the components when they move.

[0015] (3) The quantitative monitoring device for crack changes in this water conservancy project has a correction plate inside the component storage tank and a liquid blocking plate inside the liquid storage return tank. When the displacement plate pushes the rectangular sliding sleeve down, the double inclined pressure plate squeezes the hollow frame, which drives the two correction plates to move towards each other to correct the displacement plate and keep the displacement plate vertical, which is convenient for subsequent use. At the same time, the bottom pressure rod will also press the lifting rod to seal the leakage tank, preventing the external leakage of lubricating oil and making it convenient for the equipment to be stored when not in use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the main equipment box structure of the present invention; Figure 3 This is a schematic diagram of the circular sealing cylinder, liquid guiding tube, and motor structure of the present invention; Figure 4 This is a top view of the internal structure of the main equipment box of the present invention; Figure 5 This is a schematic diagram of the first spring, the corrective insert plate, and the hollow frame structure of the present invention; Figure 6 This is a bottom view of the internal structure of the main equipment box of the present invention; Figure 7 This is a schematic diagram of the structure of the stop rod, the liquid blocking plate, and the lifting rod of the present invention; Figure 8 This is a schematic diagram of the bottom pressure rod, concave frame, and second spring structure of the present invention; Figure 9 This is a side view of the internal structure of the main equipment box of the present invention; Figure 10 This is a schematic diagram of the monitoring and measurement mechanism structure of the present invention; Figure 11 This is a schematic diagram of the smooth plate, displacement plate, and annular groove structure of the present invention; Figure 12 This is a schematic diagram of the circular ranging rod, strip groove, and double inclined pressure plate structure of the present invention; Figure 13 This is a diagram showing the usage state of the structure of the present invention.

[0017] In the diagram: 1. Protective lubrication mechanism; 2. Monitoring and measuring mechanism; 101. Main equipment box; 102. Component storage tank; 103. Liquid storage return tank; 104. Rectangular moving port; 105. Vertical guide slide plate; 106. Square shrink frame; 107. Guide slide plate; 108. Guide rod; 109. First spring; 110. Correction insert plate; 111. Hollow frame; 112. Leakage tank; 113. Spraying horizontal pipe; 114. Arc-shaped guide frame; 115. Arc-shaped sealing plate; 116. Circular sealing cylinder; 117. Liquid guide. 118. Pipe; 119. Motor; 120. Rotating rod; 121. Screwdriver blade; 122. Stop rod; 123. Liquid blocking plate; 124. Lifting rod; 125. Rebound rod; 126. Bottom pressure rod; 127. Concave frame; 201. Second spring; 202. Rectangular sliding sleeve; 203. Circular distance measuring rod; 204. Strip groove; 205. Double inclined pressure plate; 206. Circular sliding piece; 207. Displacement plate; 208. Annular groove; 209. Positioning ring; 210. Threaded rod; 211. Double hole plate; 212. Nut sleeve. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-13 The present invention provides a technical solution: a quantitative monitoring device for crack changes in water conservancy projects, comprising a protective lubrication mechanism 1 and a monitoring and measuring mechanism 2; Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 The overall structure of the protective lubrication mechanism 1 is shown. The protective lubrication mechanism 1 includes a main equipment box 101. The main equipment box 101 is equipped with a component storage slot 102 and a liquid return slot 103. The top of the main equipment box 101 has a rectangular moving opening 104 that extends into the component storage slot 102. The bottom of the component storage slot 102 is fixedly connected to the vertical guide slide plate 105 on both sides by fixing blocks. The bottom of the component storage slot 102 has a leakage slot 112 that extends into the liquid return slot 103. The monitoring and measuring mechanism 2 is installed inside the component storage slot 102. The front and rear of the inner cavity of the component storage slot 102 are fixedly connected to a square shrink frame 106 by a fixing plate. Guide rods 108 are fixedly connected to both sides between the front and rear of the inner cavity of the square shrink frame 106. A guide slide plate 107 is slidably installed between the surfaces of the two guide rods 108. A correction insert plate 110 is fixedly connected to the opposite side of the front and rear guide slide plates 107. A first spring 109 is sleeved on the surface of the guide rods 108. Both ends of the guide slide plate 107 pass through the square shrink frame 106 and extend to both sides of the square shrink frame 106. A hollow frame 111 is fixedly connected to one end of the guide slide plate 107 that extends to both sides of the square shrink frame 106. A spray pipe 113 is fixedly connected to the upper left side of the main equipment box 101 through an opening. Both ends of the spray pipe 113 are fixedly connected to the right side of the inner cavity of the component storage slot 102 through fixing blocks. Arc-shaped guide frames 114 are fixedly connected to both sides of the top of the inner cavity of the component storage slot 102. Arc-shaped sealing plates 115 that cooperate with rectangular moving ports 104 are slidably installed between the inner sides of the two arc-shaped guide frames 114. The top of the arc-shaped sealing plate 115 is wrapped with a rubber layer to increase the sealing performance. A circular sealing cylinder 116 is fixedly connected to the left side of the inner cavity of the liquid storage return tank 103 through an opening. A liquid guide pipe 117 is fixedly connected to the left side of the circular sealing cylinder 116 through an opening. The end of the liquid guide pipe 117 away from the circular sealing cylinder 116 is connected to the horizontal spray pipe 113. A motor 118 is fixedly installed on the right side of the main equipment box 101 through a bracket. The motor 118 is a servo motor. The output shaft of the motor 118 is fixedly connected to a rotating rod 119 through a coupling. The left end of the rotating rod 119 passes through the main equipment box 101 and extends to the inner side of the circular sealing cylinder 116. A screw conveyor blade 120 is fixedly installed on the surface of the rotating rod 119. The front and rear sides of the top of the liquid storage return tank 103 are fixedly connected with stop rods 121 by fixing blocks. A liquid blocking plate 122 is slidably installed between the surfaces of the four stop rods 121. The front and rear sides of the top of the liquid storage return tank 103 are rotatably installed with lifting rods 123 by rotating parts, and the lifting rods 123 are in contact with the bottom of the liquid blocking plate 122. The front and rear sides of the bottom of the component storage tank 102 are slidably installed with spring rods 124 by openings. A bottom pressure rod 125 is fixedly connected between the bottom ends of two spring rods 124 on the same side, and the bottom pressure rod 125 is in contact with the top of the lifting rod 123. A concave frame 126 is fixedly connected between the top ends of two spring rods 124 on the same side, and the concave frame 126 is sleeved on the surface of the vertical guide slide plate 105. A second spring 127 is sleeved on the surface of the spring rod 124.

[0020] Before use, first install the main equipment box 101 at the bottom of the crack using the bolt assembly. Then, manually pull the positioning ring 208 to rise. As the positioning ring 208 rises, the displacement plate 206 will also pull the circular measuring rod 202 and the rectangular sliding sleeve 201 to rise synchronously along the vertical guide slide plate 105. Stop when the rectangular sliding sleeve 201 reaches the middle of the vertical guide slide plate 105. Then, insert the threaded rod 209 into the inside of the positioning ring 208. Next, fix the double-hole plate 210 to the upper part of the crack using the bolt assembly. Finally, rotate the two nut sleeves 211 towards each other. Approach until the two nuts 211 clamp the positioning ring 208 and make the displacement plate 206 vertical. At this point, the installation of the equipment is complete. When in use, the motor 118 starts and uses the rotating rod 119 to drive the auger blades 120 to rotate. The rotation of the auger blades 120 will continuously transport the lubricating oil inside the liquid return tank 103 into the circular sealing cylinder 116. Then the lubricating oil is squeezed through the liquid guide pipe 117 and injected into the spray horizontal pipe 113. Then the nozzles on the surface of the spray horizontal pipe 113 spray the lubricating oil onto the rectangular sliding sleeve 201, the vertical guide sliding plate 105, and the circular... The shaped measuring rod 202 allows the component to slide. During monitoring, if the crack separates vertically, the positioning ring 208 will descend along with the lower structure, causing the rectangular sliding sleeve 201 to rise relative to the vertical guide plate 105. If the crack separates horizontally, the displacement plate 206 will drive the circular sliding piece 205 to slide on the surface of the circular measuring rod 202. If the crack separates front and back, the displacement plate 206 will rotate synchronously. During the movement of the displacement plate 206, it can be guided by the limiting effect of the arc-shaped guide frame 114. The movable arc-shaped sealing plate 115 moves and rotates synchronously, and the arc-shaped sealing plate 115 is used to block the rectangular moving opening 104 to prevent external impurities from entering the inner side of the component storage slot 102. The inside of the component storage slot 102 can be directly observed through the window on the surface of the main equipment box 101. The scale groove on the surface of the vertical guide slide plate 105 and the circular measuring rod 202 can be used to know whether the crack has separated vertically and horizontally. By comparing the displacement plate 206 with the annular groove 207, it can be known whether the building surface above and below the crack has shifted back and forth.

[0021] Please refer to Figure 10 , Figure 11 and Figure 12The diagram illustrates the overall structure of the monitoring and measuring mechanism 2. The mechanism includes two rectangular sliding sleeves 201, which are slidably mounted on the surface of a vertical guide slide plate 105. A circular measuring rod 202 is fixedly connected between the two rectangular sliding sleeves 201 via a fixing block. The top of the circular measuring rod 202 has a through-groove 203 extending to the bottom. Both sides of the circular measuring rod 202 have circular sliding pieces 205 that slidably connect to the through-groove 203. A displacement plate 206 is rotatably connected between the two circular sliding pieces 205 via a bearing. The top of the displacement plate 206 extends through an arc. The sealing plate 115 extends to the upper part of the main equipment box 101. The displacement plate 206 extends to one end of the upper part of the main equipment box 101 and is provided with a positioning ring 208. The two circular sliding pieces 205 are provided with annular grooves 207 on opposite sides. One side of the rectangular sliding sleeve 201 is fixedly connected to a double inclined pressure plate 204 that cooperates with the hollow frame 111 through a fixing block. The inner side of the positioning ring 208 is provided with a threaded rod 209. The rear end of the threaded rod 209 is fixedly connected to a double hole plate 210. Nut sleeves 211 are threadedly connected to the surface of the threaded rod 209 and at the front and rear of the positioning ring 208.

[0022] When the monitoring dismantling is completed, first remove the main equipment box 101 and the double-hole plate 210, then press down the displacement plate 206. At the same time as the displacement plate 206 descends, the double inclined pressure plate 204 on one side will insert into the inside of the hollow frame 111 and squeeze it. At this time, the front and rear guide sliding plates 107, under the limiting action of the guide rod 108, push the two straightening inserts 110 to move towards each other. The forward movement of the straightening inserts 110 will squeeze the displacement plate 206. This forces the displacement plate 206 into a vertical position and limits its movement until the rectangular sliding sleeve 201 descends to the bottom. At this point, the two rectangular sliding sleeves 201 will press against the concave frame 126, and then the bottom pressure rod 125 will press against the lifting rods 123 on both sides to rotate. When the lifting rods 123 on both sides rotate, they will push the liquid blocking plate 122 to rise within the limit of the stop rod 121, so that the liquid blocking plate 122 seals the bottom of the leakage groove 112 to prevent lubricating oil from leaking out.

[0023] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A quantitative monitoring device for crack changes in hydraulic engineering, comprising a protective lubrication mechanism (1) and a monitoring and measurement mechanism (2), characterized in that: The protective lubrication mechanism (1) includes a main equipment box (101). The main equipment box (101) is provided with a component storage slot (102) and a liquid return channel (103) respectively. The top of the main equipment box (101) is provided with a rectangular moving port (104) that penetrates into the component storage slot (102). Both sides of the bottom of the component storage slot (102) are fixedly connected with vertical guide slide plates (105) by fixing blocks. The bottom of the component storage slot (102) is provided with a leakage channel (112) that penetrates into the liquid return channel (103). The monitoring and measuring mechanism (2) is installed inside the component storage slot (102).

2. The quantitative monitoring device for crack changes in hydraulic engineering according to claim 1, characterized in that: The front and rear parts of the inner cavity of the component storage slot (102) are fixedly connected to a square shrink frame (106) by a fixing plate. Guide rods (108) are fixedly connected to both sides of the inner cavity of the square shrink frame (106). A guide slide plate (107) is slidably installed between the surfaces of the two guide rods (108). A correction insert plate (110) is fixedly connected to the opposite side of the guide slide plate (107) at the front and rear. A first spring (109) is sleeved on the surface of the guide rod (108). Both ends of the guide slide plate (107) pass through the square shrink frame (106) and extend to both sides of the square shrink frame (106). A hollow frame (111) is fixedly connected to one end of the guide slide plate (107) extending to both sides of the square shrink frame (106).

3. The quantitative monitoring device for crack changes in hydraulic engineering according to claim 2, characterized in that: The upper left side of the main equipment box (101) is fixedly connected to a spray pipe (113) through an opening. Both ends of the spray pipe (113) are fixedly connected to the right side of the inner cavity of the component storage slot (102) through fixing blocks. Both sides of the top of the inner cavity of the component storage slot (102) are fixedly connected to arc-shaped guide frames (114). An arc-shaped sealing plate (115) that cooperates with the rectangular moving port (104) is slidably installed between the inner sides of the two arc-shaped guide frames (114).

4. The quantitative monitoring device for crack changes in hydraulic engineering according to claim 3, characterized in that: A circular sealing cylinder (116) is fixedly connected to the left side of the inner cavity of the liquid storage return tank (103) through an opening. A liquid guide pipe (117) is fixedly connected to the left side of the circular sealing cylinder (116) through an opening. The end of the liquid guide pipe (117) away from the circular sealing cylinder (116) is connected to the horizontal spray pipe (113). A motor (118) is fixedly installed on the right side of the main equipment box (101) through a bracket. A rotating rod (119) is fixedly connected to the output shaft of the motor (118) through a coupling. The left end of the rotating rod (119) passes through the main equipment box (101) and extends to the inside of the circular sealing cylinder (116). A screw conveyor blade (120) is fixedly installed on the surface of the rotating rod (119).

5. The quantitative monitoring device for crack changes in hydraulic engineering according to claim 4, characterized in that: The front and rear sides of the top of the liquid storage return tank (103) are fixedly connected with a stop rod (121) by a fixing block. A liquid blocking plate (122) is slidably installed between the surfaces of the four stop rods (121). The front and rear sides of the top of the liquid storage return tank (103) are rotatably installed with a lifting rod (123) by a rotating component, and the lifting rod (123) is in contact with the bottom of the liquid blocking plate (122).

6. The quantitative monitoring device for crack changes in hydraulic engineering according to claim 5, characterized in that: The front and rear sides of the bottom of the component storage groove (102) are slidably installed with rebound rods (124) through openings. A bottom pressure rod (125) is fixedly connected between the bottom ends of the two rebound rods (124) on the same side, and the bottom pressure rod (125) is in contact with the top end of the lifting rod (123). A concave frame (126) is fixedly connected between the top ends of the two rebound rods (124) on the same side, and the concave frame (126) is sleeved on the surface of the vertical guide slide plate (105). A second spring (127) is sleeved on the surface of the rebound rod (124).

7. A quantitative monitoring device for crack changes in hydraulic engineering according to claim 6, characterized in that: The monitoring and measuring mechanism (2) includes two rectangular sliding sleeves (201), which are slidably mounted on the surface of a vertical guide slide plate (105). A circular distance measuring rod (202) is fixedly connected between the two rectangular sliding sleeves (201) by a fixing block. A strip groove (203) extending from the top to the bottom is provided on the top of the circular distance measuring rod (202). Both sides of the surface of the circular distance measuring rod (202) are equipped with circular sliding pieces (205) that are slidably connected to the strip groove (203). A displacement plate (206) is rotatably connected between the two parts by bearing components. The top of the displacement plate (206) passes through the arc-shaped sealing plate (115) and extends to the upper part of the main equipment box (101). A positioning ring (208) is provided at one end of the displacement plate (206) extending to the upper part of the main equipment box (101). An annular groove (207) is provided on the opposite side of the two circular sliding pieces (205). A double inclined pressure plate (204) that cooperates with the hollow frame (111) is fixedly connected to one side of the rectangular sliding sleeve (201) by a fixing block.

8. The quantitative monitoring device for crack changes in hydraulic engineering according to claim 7, characterized in that: A threaded rod (209) is provided on the inner side of the positioning ring (208). A double-hole plate (210) is fixedly connected to the rear end of the threaded rod (209). Nut sleeves (211) are threadedly connected to the surface of the threaded rod (209) and at both the front and rear parts of the positioning ring (208).

Images