Automatic monitoring device for anchor cable stress in foundation pit support

Abstract

The present invention discloses an automatic monitoring device for anchor stress of foundation pit support, which belongs to the field of foundation pit monitoring, and includes a foundation pit slope and a base; an anchor cable is inserted into the foundation pit slope, a support body is fixedly installed on the side wall of the foundation pit slope, a through hole is opened on the side wall of the support body, and the anchor cable passes through the through hole, a mounting plate is detachably installed on the side wall of the support body, a support plate is hinged on the side wall of the mounting plate, and a first connecting port and a second connecting port are respectively opened on the side wall of the mounting plate and the support plate. Through the mutual cooperation of the support plate, the support rod, the slider, and the first threaded rod, in the process of rotating the first rotating rod, the first rotating rod drives the slider to move along the first sliding groove, and then in the process of moving the slider, the support rod drives the support plate to rotate around the hinge point, and the support plate gradually becomes perpendicular to the anchor cable during the rotation process, and there is no need to re-make the support plate according to the angle between the foundation pit slope and the anchor cable, thereby improving the convenience of the device.

Description

Technical Field

[0001] The invention relates to the field of foundation pit monitoring, and more specifically to an automatic monitoring device for anchor cable stress of foundation pit support. Background Art

[0002] As a common supporting structure, anchor cable is widely used in engineering construction fields such as slopes and foundation pits. Its working principle is mainly to insert multiple twisted steel strands into the drill hole, fix the bottom end to a stable position deep in the sliding body, and fix the top to the outside of the rock and soil body. The shear and tensile resistance of the steel strands is used to prevent the sliding body from moving. Existing large foundation pits or deep foundation pits usually have monitoring equipment for monitoring the deformation and displacement of the supporting structure installed in the foundation pit supporting structure. The monitoring equipment is used to evaluate and monitor the safety of the foundation pit, so that construction personnel can promptly discover the safety hazards in the foundation pit, and immediately take corresponding measures and formulate relevant treatment plans to avoid the occurrence of safety accidents.

[0003] The Chinese patent with authorization announcement number: CN113482068A discloses an automatic monitoring system for anchor cable stress of foundation pit support. By setting a pad, the anchor cable meter is not easily deviated when measuring the tension of the anchor cable, thereby improving the accuracy of the measurement data and reducing the measurement error.

[0004] Although the above patent can improve the accuracy of the measurement data, since the angle of the pad cannot be adjusted, the pad needs to be remade every time the device is used, which brings great inconvenience to the use of the device.

[0005] Therefore, an automatic monitoring device for anchor cable stress of foundation pit support is proposed. Summary of the invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide an automatic monitoring device for anchor stress of foundation pit support, which can realize the mutual coordination of the first threaded rod, the slider and the support rod, and can adjust the support plate, so that the support plate can be made perpendicular to the anchor cable.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] The invention discloses an automatic monitoring device for anchor cable stress of foundation pit support, comprising a foundation pit slope and a base; an anchor cable is inserted into the foundation pit slope, a support body is fixedly installed on the side wall of the foundation pit slope, a through hole is opened on the side wall of the support body, and the anchor cable passes through the through hole; a mounting plate is detachably installed on the side wall of the support body, a support plate is hinged on the side wall of the mounting plate, a first connecting port and a second connecting port are respectively opened on the side walls of the mounting plate and the support plate, and the anchor cable passes through the first connecting port and the second connecting port, and a through-type jack and a through-type jack are installed on the anchor cable. A matching dynamometer, and the side of the dynamometer away from the through-type jack is fitted with the support plate; a support rod is hinged on the side wall of the support plate, a first slide groove is opened on the side wall of the mounting plate, a slider is slidably installed in the first slide groove, and the end of the support rod away from the support plate is hinged to the slider; a first threaded rod is rotatably inserted on the top wall of the mounting plate, and the first threaded rod passes through the first slide groove, and the slider is threadedly sleeved on the first threaded rod, a limit plate is embedded in the mounting plate, and the limit plate is fixedly connected to the first threaded rod, and the limit plate is rotatably matched with the mounting plate.

[0009] Furthermore, a first mounting groove is opened on the mounting plate, a ratchet that cooperates with the first mounting groove is fixedly sleeved on the first threaded rod, a T-shaped insertion rod that cooperates with the ratchet is movably inserted on the side wall of the mounting plate, a first spring is embedded on the side wall of the mounting plate, and the first spring is fixedly connected to the insertion rod at one end away from the mounting plate.

[0010] Furthermore, a storage tank is provided on the mounting plate, and the storage tank is filled with lubricating oil. A drain pipe is inserted into the side wall of the storage tank. A pressure valve is fixedly installed at one end of the drain pipe at the storage tank, and the end of the drain pipe away from the pressure valve extends to the surface of the first threaded rod. An air supply mechanism cooperating with the storage tank is provided on the mounting plate.

[0011] Furthermore, the air supply mechanism includes an air cylinder fixedly mounted on the top wall of the first mounting groove, a piston plate slidably mounted in the air cylinder, a second spring fixedly mounted between the top wall of the piston plate and the air cylinder, a push rod fixedly mounted on the bottom wall of the piston plate, a semicircular protrusion fixedly mounted on the top wall of the ratchet, an air intake valve connected to the outside world is inserted on the top wall of the air cylinder, an exhaust valve is inserted on the side wall of the air cylinder, and an exhaust pipe connected to the storage tank is fixedly mounted on the output end of the exhaust valve.

[0012] Furthermore, a bracket is fixedly installed on the top wall of the base, a fixing rod is provided on the bracket, a second mounting groove is fixedly installed on one end of the fixing rod away from the bracket, a clamping rod is rotatably installed in the second mounting groove, a clamping plate is fixedly installed on one end of the clamping rod away from the fixing rod, and a fixing mechanism cooperating with the clamping rod is provided on the fixing rod.

[0013] Furthermore, the fixing mechanism includes a fixing groove opened on the side wall of the fixing rod, a third mounting groove connected to the fixing groove is opened on the side wall of the clamping rod, and the third mounting groove is rectangular, a first rotating rod is slidably installed in the third mounting groove, a third spring is fixedly installed between the first rotating rod and the third mounting groove, and a first gear matching the fixing groove is fixedly installed on the side of the first rotating rod away from the third spring.

[0014] Furthermore, the fixed rod includes a first connecting rod, a second sliding groove is provided on the side wall of the first connecting rod close to the clamping rod, the second connecting rod is slidably installed in the second sliding groove, a first threaded hole is provided on the side wall of the first connecting rod away from the second connecting rod, a second threaded rod is threadedly installed in the first threaded hole, a connecting disk is rotatably embedded in the second connecting rod, and the side wall of the connecting disk away from the clamping rod is fixedly connected to the second threaded rod.

[0015] Furthermore, a third sliding groove is provided on the side wall of the bracket close to the clamping rod, and the fixing rod is slidably matched with the third sliding groove, a cavity is provided on the bracket, a third threaded rod extending to the top wall of the third sliding groove is rotatably installed on the bottom wall of the cavity, and the first connecting rod is threadedly installed on the third threaded rod, and the first bevel gear is sleeved on the third threaded rod, and a second rotating rod extending to the outside is inserted on the side wall of the cavity, and a second bevel gear meshing with the first bevel gear is fixedly installed on one end of the second rotating rod close to the cavity.

[0016] Furthermore, a clockwork spring is fixedly installed between the bottom wall of the ratchet and the first installation groove.

[0017] Furthermore, a rotating plate is fixedly mounted on the first threaded rod, the second threaded rod and the second rotating rod.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) Through the mutual cooperation of the support plate, the support rod, the slider, and the first threaded rod, during the rotation of the first rotating rod, the first rotating rod drives the slider to move along the first sliding groove, and then during the movement of the slider, the support rod drives the support plate to rotate around the hinge point. During the rotation process, the support plate gradually becomes perpendicular to the anchor cable, and there is no need to remake the support plate according to the angle between the foundation pit slope and the anchor cable, thereby improving the convenience of the device.

[0020] (2) By setting up a storage groove, the protrusion is driven to rotate during the rotation of the ratchet wheel. During the rotation of the protrusion, it gradually contacts the push rod and pushes the push rod to move. During the movement of the push rod, the piston plate is driven to move. Then the gas in the gas cylinder passes through the exhaust valve and the exhaust pipe and flows to the storage groove. Then the pressure in the storage groove increases. Under the action of the pressure, the lubricating oil flows through the pressure valve and the exhaust pipe to the first threaded rod, thereby reducing the friction between the first threaded rod and the slider, thereby ensuring the normal movement of the slider.

[0021] (3) By setting a clamping plate, the first gear is pulled outward. When the first gear is out of contact with the fixing groove, the clamping plate is rotated to make the clamping plate fit with the through-type jack. When the clamping plate fits with the through-type jack, the third spring stretches and drives the first gear to reset and insert into the fixing groove again. Then, the first gear is fixed under the action of the fixing groove, that is, the clamping plate is fixed at this time, and then the through-type jack is fixed under the action of the clamping plate, thereby effectively preventing the ground from shaking during the passage of large vehicles, causing the through-type jack to deviate and affect the monitoring data, thereby improving the accuracy of the detection data.

[0022] (4) By setting a second threaded rod, the second connecting rod is driven to move along the second sliding groove through the connecting plate during the rotation of the second threaded rod, and the clamping plate is driven to move through the clamping rod during the movement of the second connecting rod. During the movement of the clamping plate, the clamping plate gradually fits with the through-type jack, so that the clamping plate can be applied to through-type jacks of any size, thereby improving the application range of the clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 For the present invention Figure 1 Enlarged view of point B in the middle;

[0025] Figure 3 is a cross-sectional view of a mounting plate of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged view of point C in the middle;

[0027] Figure 5 It is a combined diagram of the mounting plate, the support plate and the support rod of the present invention;

[0028] Figure 6 It is a combined cross-sectional view of the second linkage rod and the clamping rod of the present invention;

[0029] Figure 7 is a cross-sectional view of a fixing rod of the present invention;

[0030] Figure 8 It is a combined cross-sectional view of the bracket and the fixing rod of the present invention;

[0031] Fig. 9 It is a combined diagram of the plunger and the first spring of the present invention;

[0032] Fig.10 It is a partial cross-sectional view of the second connecting rod of the present invention.

[0033] Description of the numbers in the figure:

[0034] 1. Foundation pit slope; 2. Base; 3. Anchor cable; 4. Support body; 5. Mounting plate; 6. Support plate; 7. Through-type jack; 8. Dynamometer; 9. Support rod; 10. First slide groove; 11. Sliding block; 12. First threaded rod; 13. Limiting plate; 14. First mounting groove; 15. Ratchet; 16. Insert rod; 17. First spring; 18. Storage tank; 19. Pressure valve; 20. Drain pipe; 21. Air cylinder; 22. Piston plate; 23. Second spring; 24. Push rod; 25. Bump; 26. Intake valve; 27. Exhaust valve; 28. Exhaust pipe; 29. ​​bracket; 30. fixing rod; 3001. first linkage rod; 3002. second linkage rod; 31. second slide groove; 32. clamping rod; 33. clamping plate; 34. fixing groove; 35. third mounting groove; 36. first rotating rod; 37. third spring; 38. first gear; 39. spring; 40. rotating plate; 41. second threaded rod; 42. connecting plate; 43. third slide groove; 44. cavity; 45. third threaded rod; 46. first bevel gear; 47. second bevel gear; 48. second rotating rod; 49. second mounting groove. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] See also Figures 1 to 10 , the anchor cable stress automatic monitoring device for foundation pit support includes: foundation pit slope 1 and base 2;

[0038] An anchor cable 3 is inserted on the foundation pit slope 1, a supporting body 4 is fixedly installed on the side wall of the foundation pit slope 1, a through hole is opened on the side wall of the supporting body 4, and the anchor cable 3 passes through the through hole, a mounting plate 5 is detachably installed on the side wall of the supporting body 4, a support plate 6 is hinged on the side wall of the mounting plate 5, a first connecting port and a second connecting port are respectively opened on the side walls of the mounting plate 5 and the support plate 6, and the anchor cable 3 passes through the first connecting port and the second connecting port, a through-type jack 7 and a dynamometer 8 matched with the through-type jack 7 are installed on the anchor cable 3, and the dynamometer 8 is away from the side of the through-type jack 7 Fit with the support plate 6; a support rod 9 is hinged on the side wall of the support plate 6, and a first slide groove 10 is opened on the side wall of the mounting plate 5, a slider 11 is slidably installed in the first slide groove 10, and the end of the support rod 9 away from the support plate 6 is hinged to the slider 11; a first threaded rod 12 is rotatably inserted on the top wall of the mounting plate 5, and the first threaded rod 12 passes through the first slide groove 10, and the slider 11 is threadedly sleeved on the first threaded rod 12, a limit plate 13 is embedded in the mounting plate 5, and the limit plate 13 is fixedly connected to the first threaded rod 12, and the limit plate 13 is rotatably matched with the mounting plate 5.

[0039] When in use, first install the mounting plate 5 on the side wall of the foundation pit slope 1, then pass the anchor cable 3 through the first connecting port and the second connecting port, and then install the dynamometer 8 on the anchor cable 3. When the side wall of the dynamometer 8 fits with the support plate 6, install the through-type jack 7 on the anchor cable 3. When the side wall of the through-type jack 7 fits with the dynamometer 8, start the through-type jack 7, and then the through-type jack 7 applies a pulling force on the anchor cable 3 in the direction away from the anchor cable 3. At the same time, the anchor cable 3 applies a reaction force on the through-type jack 7 that is equal to and opposite to the pulling force. Then, under the action of the reaction force, the through-type jack 7 applies a pressure of the same magnitude as the reaction force to the dynamometer 8. Under the action of the pressure, the dynamometer 8 starts to display readings, which automatically detects the stress changes of the anchor cable 3.

[0040] After the anchor cable 3 passes through the second connecting port, the first threaded rod 12 can be rotated. Since the side wall of the slider 11 fits with the first slide groove 10, the slider 11 cannot rotate. Then, the first threaded rod 12 drives the slider 11 to move along the first slide groove 10 during rotation. During the movement of the slider 11, the support rod 9 is driven to rotate around the hinge point. Then, during the rotation of the support rod 9, the support plate 6 is driven to rotate around the hinge point. During the rotation of the support plate 6, it gradually becomes perpendicular to the anchor cable 3. There is no need to remake the support plate 6 according to the angle between the foundation pit slope 1 and the anchor cable 3, which improves the convenience of using the device.

[0041] like Figure 4 , Fig. 9As shown, a first mounting groove 14 is opened on the mounting plate 5, a ratchet 15 cooperating with the first mounting groove 14 is fixedly sleeved on the first threaded rod 12, a T-shaped insertion rod 16 cooperating with the ratchet 15 is movably inserted on the side wall of the mounting plate 5, a first spring 17 is embedded on the side wall of the mounting plate 5, and the first spring 17 is fixedly connected to the insertion rod 16 at one end away from the mounting plate 5.

[0042] By adopting the above technical solution, in the initial state, the first spring 17 is in a free extension state, and the ratchet 15 is driven to rotate during the rotation of the first threaded rod 12. During the rotation of the ratchet 15, the gear of the ratchet 15 gradually contacts the insertion rod 16 and pushes the insertion rod 16 to move. At this time, the first spring 17 is stretched and has a tendency to recover. When the insertion rod 16 is out of contact with the gear of the ratchet 15, the first spring 17 contracts and drives the insertion rod 16 to reset. At this time, the insertion rod 16 is inserted into the tooth groove of the ratchet 15 again, and then the ratchet 15 cannot rotate under the action of the insertion rod 16, and then the first threaded rod 12 is driven to rotate. The rod 12 cannot rotate, that is, the slider 11 cannot move. Since there are many pump trucks and dump trucks on the construction site and the loads of the pump trucks and dump trucks are relatively large, the mounting plate 5 may be caused to vibrate. At the same time, the support plate 6 will exert pressure on the support rod 9, and then the support rod 9 will exert pressure on the slider 11 under the action of pressure. Then, under the action of pressure and shaking, the first threaded rod 12 may be caused to rotate. During the rotation of the first threaded rod 12, the slider 11 will be driven to move, thereby affecting the reading of the dynamometer 8. Therefore, under the action of the insert rod 16 and the ratchet 15, the accuracy of stress monitoring of the anchor cable 3 can be improved.

[0043] like Figure 4 As shown, a storage tank 18 is provided on the mounting plate 5, and the storage tank 18 is filled with lubricating oil, a drain pipe 20 is inserted on the side wall of the storage tank 18, a pressure valve 19 is fixedly installed at one end of the drain pipe 20 located at the storage tank 18, and the end of the drain pipe 20 away from the pressure valve 19 extends to the surface of the first threaded rod 12, and an air supply mechanism cooperating with the storage tank 18 is provided on the mounting plate 5.

[0044] By adopting the above technical scheme, the air supply mechanism includes an air cylinder 21 fixedly mounted on the top wall of the first mounting groove 14, a piston plate 22 is slidably mounted in the air cylinder 21, a second spring 23 is fixedly mounted between the top wall of the piston plate 22 and the air cylinder 21, a push rod 24 is fixedly mounted on the bottom wall of the piston plate 22, a semicircular protrusion 25 is fixedly mounted on the top wall of the ratchet 15, an intake valve 26 connected to the outside is inserted on the top wall of the air cylinder 21, an exhaust valve 27 is inserted on the side wall of the air cylinder 21, and an exhaust pipe 28 connected to the storage tank 18 is fixedly mounted on the output end of the exhaust valve 27.

[0045] In the initial state, the second spring 23 is in a free extension state. During the rotation of the ratchet 15, the protrusion 25 is driven to rotate. During the rotation of the protrusion 25, it gradually contacts the push rod 24. Then, under the action of the arc surface of the protrusion 25, the push rod 24 is pushed to move upward. During the movement of the push rod 24, the piston plate 22 is driven to move. At this time, the second spring 23 is squeezed and has a tendency to recover. Then, during the movement of the piston plate 22, the pressure in the gas cylinder 21 increases. Under the action of the pressure, the gas flows to the storage tank 18 through the exhaust valve 27 and the exhaust pipe 28. Then, the pressure in the storage tank 18 increases. Under the action of the pressure, the gas in the storage tank 18 The lubricating oil flows to the surface of the first threaded rod 12 through the pressure valve 19 and the drain pipe 20, and then flows downward along the first threaded rod 12 under the action of gravity. In the process of flowing downward, the lubricating oil adheres to the surface of the ratchet 15, thereby reducing the friction between the ratchet 15 and the insertion rod 16, thereby reducing the degree of wear of the ratchet 15 and the insertion rod 16; at the same time, in the process of the lubricating oil moving along the first threaded rod 12, it gradually flows to the gap between the first threaded rod 12 and the slider 11, thereby reducing the friction between the first threaded rod 12 and the slider 11, thereby ensuring the normal movement of the slider 11.

[0046] like Figure 2 , Figure 6 , Fig.10 As shown, a bracket 29 is fixedly mounted on the top wall of the base 2, a fixing rod 30 is provided on the bracket 29, a second mounting groove 49 is fixedly mounted on one end of the fixing rod 30 away from the bracket 29, a clamping rod 32 is rotatably mounted on the second mounting groove 49, a clamping plate 33 is fixedly mounted on one end of the clamping rod 32 away from the fixing rod 30, and a fixing mechanism cooperating with the clamping rod 32 is provided on the fixing rod 30.

[0047] The fixing mechanism includes a fixing groove 34 opened on the side wall of the fixing rod 30, and a third mounting groove 35 connected to the fixing groove 34 is opened on the side wall of the clamping rod 32, and the third mounting groove 35 is rectangular. A first rotating rod 36 is slidably installed in the third mounting groove 35, and a third spring 37 is fixedly installed between the first rotating rod 36 and the third mounting groove 35. A first gear 38 that cooperates with the fixing groove 34 is fixedly installed on the side of the first rotating rod 36 away from the third spring 37.

[0048] By adopting the above technical solution, in the initial state, the third spring 37 is in a free extension state. Since the through-type jack 7 is coaxial with the anchor cable 3, the through-type jack 7 needs to be perpendicular to the support plate 6. Moreover, since the clamping plate 33 is parallel to the base 2, when the anchor cable 3 is not parallel to the base 2, the clamping plate 33 is not perpendicular to the through-type jack 7. At this time, the first gear 38 can be pulled and the first gear 38 can be disengaged from the fixing groove 34. Then the clamping rod 32 is rotated. During the rotation of the clamping rod 32, the clamping plate 33 is driven to rotate. During the rotation of the clamping plate 33, the clamping plate 33 gradually fits with the through-type jack 7. When the clamping plate 3 After being fitted with the through-type jack 7, the third spring 37 contracts and drives the first gear 38 to reset. During the process of resetting, the first gear 38 gradually inserts into the fixing groove 34. At this time, the first gear 38 cannot rotate under the action of the fixing groove 34, and then the clamping rod 32 cannot rotate, that is, the clamping plate 33 cannot move at this time, and then the through-type jack 7 cannot move under the action of the clamping plate 33, and then the through-type jack 7 can be fixed, which effectively prevents the ground from shaking during the passage of large vehicles, causing the through-type jack 7 to deviate and affect the monitoring data, thereby improving the accuracy of the detection data.

[0049] like Figure 7 As shown, the fixed rod 30 includes a first connecting rod 3001, a second sliding groove 31 is opened on the side wall of the first connecting rod 3001 close to the clamping rod 32, and the second connecting rod 3002 is slidably installed in the second sliding groove 31, a first threaded hole is opened on the side wall of the first connecting rod 3001 away from the second connecting rod 3002, and a second threaded rod 41 is threadedly installed in the first threaded hole, a connecting disk 42 is rotatably embedded in the second connecting rod 3002, and the side wall of the connecting disk 42 away from the clamping rod 32 is fixedly connected to the second threaded rod 41.

[0050] By adopting the above technical solution, when the through-type jack 7 is thinner or thicker, the second threaded rod 41 can be rotated, and then the second threaded rod 41 starts to move along the first threaded hole. During the movement of the second threaded rod 41, the second connecting rod 3002 is driven to move along the second slide groove 31 through the connecting plate 42. During the movement of the second connecting rod 3002, the clamping plate 33 is driven to move through the clamping rod 32. During the movement of the clamping plate 33, it gradually fits with the through-type jack 7, so that the clamping plate 33 can be suitable for through-type jacks 7 of any size, thereby improving the application range of the device.

[0051] like Figure 8As shown, a third sliding groove 43 is provided on the side wall of the bracket 29 close to the clamping rod 32, and the fixing rod 30 is slidably matched with the third sliding groove 43, and a cavity 44 is provided on the bracket 29, and a third threaded rod 45 extending to the top wall of the third sliding groove 43 is rotatably installed on the bottom wall of the cavity 44, and the first connecting rod 3001 is threadedly installed on the third threaded rod 45, and a first bevel gear 46 is sleeved on the third threaded rod 45, and a second rotating rod 48 extending to the outside is inserted on the side wall of the cavity 44, and a second bevel gear 47 meshing with the first bevel gear 46 is fixedly installed on one end of the second rotating rod 48 close to the cavity 44.

[0052] By adopting the above technical solution, when the through-type jack 7 is at a relatively high position, the second rotating rod 48 can be rotated. During the rotation of the second rotating rod 48, the third threaded rod 45 is driven to rotate through the second bevel gear 47 and the first bevel gear 46. During the rotation of the third threaded rod 45, the first connecting rod 3001 is driven to move upward. Then, the first connecting rod 3001 drives the clamping plate 33 to move upward through the second connecting rod 3002 and the clamping rod 32. During the upward movement of the clamping plate 33, it gradually contacts the through-type jack 7. Through the mutual cooperation of the second rotating rod 48, the second bevel gear 47, the first bevel gear 46, the third threaded rod 45, the first connecting rod 3001, the second connecting rod 3002, and the clamping rod 32, it is convenient to adjust the height of the clamping plate 33.

[0053] like Figure 4 As shown, a clockwork spring 39 is fixedly installed between the bottom wall of the ratchet 15 and the first installation groove 14 .

[0054] By adopting the above technical solution, during the rotation of the ratchet 15, the spring 39 begins to accumulate force and has a tendency to recover. When the device is used, the user can pull the plug rod 16 outward. When the plug rod 16 is out of contact with the ratchet 15, the spring 39 is reset and drives the ratchet 15 to rotate. During the rotation of the ratchet 15, the first threaded rod 12 is driven to rotate. During the rotation of the first threaded rod 12, the slider 11 is reset. Then, during the resetting of the slider 11, the support rod 9 is driven to reset through the support rod 9. During the resetting of the support plate 6, it gradually fits with the mounting plate 5. There is no need for the user to rotate the first threaded rod 12 to reset the support plate 6, which reduces the work intensity of the user.

[0055] like Figure 1 , Figure 3 , Figure 7 As shown, a rotating plate 40 is fixedly mounted on the first threaded rod 12 , the second threaded rod 41 , and the second rotating rod 48 .

[0056] By adopting the above technical solution, when rotating the first threaded rod 12, the second threaded rod 41, and the second rotating rod 48, by setting the rotating plate 40, the user can rotate the corresponding rotating plate 40 to drive the corresponding first threaded rod 12, the second threaded rod 41, and the second rotating rod 48 to rotate, thereby facilitating the user to rotate the first threaded rod 12, the second threaded rod 41, and the second rotating rod 48.

[0057] Method of use: After the anchor cable 3 passes through the second connecting port, the first threaded rod 12 can be rotated. Since the side wall of the slider 11 fits the first slide groove 10, the slider 11 cannot rotate. Then, the first threaded rod 12 drives the slider 11 to move along the first slide groove 10 during rotation. During the movement of the slider 11, the support rod 9 is driven to rotate around the hinge point. Then, during the rotation of the support rod 9, the support plate 6 is driven to rotate around the hinge point. During the rotation of the support plate 6, it gradually becomes perpendicular to the anchor cable 3; and the first threaded rod 12 is fixed by the mutual cooperation of the insertion rod 16, the first spring 17, and the ratchet 15; during the rotation of the ratchet 15, the protrusion 25 is driven to rotate During the rotation of the protrusion 25, the protrusion 25 gradually contacts the push rod 24, and then the push rod 24 is pushed upward by the action of the arc surface of the protrusion 25. During the movement of the push rod 24, the piston plate 22 is driven to move. At this time, the second spring 23 is squeezed and has a tendency to recover. Then, during the movement of the piston plate 22, the pressure in the gas cylinder 21 increases. Under the action of pressure, the gas flows to the storage tank 18 through the exhaust valve 27 and the exhaust pipe 28, and then the pressure in the storage tank 18 increases. Under the action of pressure, the lubricating oil in the storage tank 18 flows to the surface of the first threaded rod 12 through the pressure valve 19 and the drain pipe 20, and then the lubricating oil flows downward along the first threaded rod 12 under the action of gravity.

[0058] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Automatic monitoring device for anchor cable stress of foundation pit support, It is characterized in that include: Foundation pit slope (1) and base (2); Monitoring agencies; The monitoring mechanism comprises an anchor cable (3) inserted into a foundation pit slope (1); a support body (4) is fixedly mounted on a side wall of the foundation pit slope (1); a through hole is provided on the side wall of the support body (4), and the anchor cable (3) passes through the through hole; a mounting plate (5) is detachably mounted on the side wall of the support body (4); a support plate (6) is hinged on the side wall of the mounting plate (5); a first communication port and a second communication port are respectively provided on the side walls of the mounting plate (5) and the support plate (6); and the anchor cable (3) is ) passes through the first connecting port and the second connecting port, a through-type jack (7) and a force gauge (8) matched with the through-type jack (7) are installed on the anchor cable (3), and the side of the force gauge (8) away from the through-type jack (7) is in contact with the support plate (6); a tensile force is applied to the anchor cable (3) by the through-type jack (7), and at the same time, the force gauge (8) provides a supporting force equal to the tensile force to the through-type jack (7), and then under the action of the supporting force, the force gauge (8) starts to monitor the stress of the anchor cable (3); An adjustment mechanism; the adjustment mechanism comprises a support rod (9) hinged on the side wall of the support plate (6); a first slide groove (10) is provided on the side wall of the mounting plate (5); a slider (11) is slidably mounted in the first slide groove (10); and an end of the support rod (9) away from the support plate (6) is hinged to the slider (11); by pushing the slider (11) to move along the first slide groove (10), the slider (11) drives the support plate (6) to rotate around the hinge point through the support rod (9) during the movement, thereby making the support plate (6) perpendicular to the anchor cable (3); A driving mechanism; the driving mechanism comprises a first threaded rod (12) rotatably inserted on the top wall of the mounting plate (5), the first threaded rod (12) passes through the first slide groove (10), and the slider (11) is threadedly sleeved on the first threaded rod (12), a limiting plate (13) is embedded in the mounting plate (5), and the limiting plate (13) is fixedly connected to the first threaded rod (12), and the limiting plate (13) is rotatably matched with the mounting plate (5); by rotating the first threaded rod (12), since the side wall of the slider (11) is in contact with the first slide groove (10), the slider (11) cannot be rotated, and the slider (11) can be driven to move during the rotation of the first threaded rod (12); The mounting plate (5) is provided with a first mounting groove (14); a ratchet (15) that cooperates with the first mounting groove (14) is fixedly sleeved on the first threaded rod (12); a T-shaped insertion rod (16) that cooperates with the ratchet (15) is movably inserted on the side wall of the mounting plate (5); a first spring (17) is embedded on the side wall of the mounting plate (5); and an end of the first spring (17) that is away from the mounting plate (5) is fixedly connected to the insertion rod (16); A bracket (29) is fixedly mounted on the top wall of the base (2), a fixing rod (30) is provided on the bracket (29), a second mounting groove (49) is fixedly mounted on one end of the fixing rod (30) away from the bracket (29), a clamping rod (32) is rotatably mounted on the second mounting groove (49), a clamping plate (33) is fixedly mounted on one end of the clamping rod (32) away from the fixing rod (30), and a fixing mechanism cooperating with the clamping rod (32) is provided on the fixing rod (30); The fixing mechanism comprises a fixing groove (34) formed on a side wall of the fixing rod (30); a third mounting groove (35) communicating with the fixing groove (34) is formed on a side wall of the clamping rod (32); the third mounting groove (35) is rectangular; a first rotating rod (36) is slidably mounted in the third mounting groove (35); a third spring (37) is fixedly mounted between the first rotating rod (36) and the third mounting groove (35); and a first gear (38) cooperating with the fixing groove (34) is fixedly mounted on a side of the first rotating rod (36) away from the third spring (37); The fixing rod (30) comprises a first connecting rod (3001), a second sliding groove (31) is provided on a side wall of the first connecting rod (3001) close to the clamping rod (32), a second connecting rod (3002) is slidably mounted in the second sliding groove (31), a first threaded hole is provided on a side wall of the first connecting rod (3001) away from the second connecting rod (3002), a second threaded rod (41) is threadedly mounted in the first threaded hole, a connecting plate (42) is rotatably embedded in the second connecting rod (3002), and the side wall of the connecting plate (42) away from the clamping rod (32) is fixedly connected to the second threaded rod (41).

2. The automatic monitoring device for anchor cable stress of foundation pit support according to claim 1, Features: The mounting plate (5) is provided with a storage groove (18), and the storage groove (18) is filled with lubricating oil. A drainage pipe (20) is inserted into the side wall of the storage groove (18). A pressure valve (19) is fixedly installed at one end of the drainage pipe (20) located in the storage groove (18), and an end of the drainage pipe (20) away from the pressure valve (19) extends to the surface of the first threaded rod (12). The mounting plate (5) is provided with an air supply mechanism that cooperates with the storage groove (18).

3. The automatic monitoring device for anchor cable stress of foundation pit support according to claim 2, Features: The air supply mechanism comprises an air cylinder (21) fixedly mounted on the top wall of the first mounting groove (14), a piston plate (22) being slidably mounted in the air cylinder (21), a second spring (23) being fixedly mounted between the top wall of the piston plate (22) and the air cylinder (21), a push rod (24) being fixedly mounted on the bottom wall of the piston plate (22), a semicircular protrusion (25) being fixedly mounted on the top wall of the ratchet (15), an air inlet valve (26) communicating with the outside being inserted on the top wall of the air cylinder (21), an air exhaust valve (27) being inserted on the side wall of the air cylinder (21), and an exhaust pipe (28) communicating with the storage groove (18) being fixedly mounted on the output end of the exhaust valve (27).

4. The automatic monitoring device for anchor cable stress of foundation pit support according to claim 3, Features: A third slide groove (43) is provided on a side wall of the bracket (29) close to the clamping rod (32), and the fixing rod (30) is slidably matched with the third slide groove (43). A cavity (44) is provided on the bracket (29), and a third threaded rod (45) extending to the top wall of the third slide groove (43) is rotatably mounted on the bottom wall of the cavity (44), and the first connecting rod (3001) is threadedly mounted on the third threaded rod (45), and a first bevel gear (46) is sleeved on the third threaded rod (45). A second rotating rod (48) extending to the outside is inserted on the side wall of the cavity (44), and a second bevel gear (47) meshing with the first bevel gear (46) is fixedly mounted on one end of the second rotating rod (48) close to the cavity (44).

5. The automatic monitoring device for anchor cable stress of foundation pit support according to claim 4, Features: A clockwork spring (39) is fixedly mounted between the bottom wall of the ratchet wheel (15) and the first mounting groove (14).

6. The automatic monitoring device for anchor cable stress of foundation pit support according to claim 5, Features: A rotating plate (40) is fixedly mounted on the first threaded rod (12), the second threaded rod (41), and the second rotating rod (48).

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