A shear force detection device for building load-bearing beams

Abstract

The present invention relates to the field of building material detection technology, and specifically to a shear force detection device for building load-bearing beams, comprising two groups of supporting seats and two groups of hydraulic cylinders, and also comprising a lifting device, wherein the lifting device comprises a supporting cloth and two groups of lifting and traction components, each group of lifting and traction components comprises a lifting frame and two groups of lifting rope mechanisms, each group of lifting rope mechanisms comprises a placement frame, a reel, a lifting rope, a limiting ring, a cylinder, a transmission mechanism and a locking mechanism, after the supporting cloth rises and contacts the bottom of the supporting beam, the reel will reel up the lifting rope, and the corresponding lifting rope will pull the end corners of the supporting cloth toward the load-bearing beam, so that the four end corners of the supporting cloth will gather toward the load-bearing beam, and then the supporting cloth will cover the load-bearing beam from the bottom, and finally the broken load-bearing beam will be lifted up by the supporting cloth, and the broken load-bearing beam can be completely transported out of the detection site after one transportation, and compared with the traditional lifting device, the present device can effectively reduce the transportation time.

Description

Technical Field

[0001] The invention relates to the technical field of building material detection, and in particular to a shear force detection device for a building load-bearing beam. Background Art

[0002] Shear force, also known as shear force: "Shear" is the phenomenon that the cross section of a material undergoes relative displacement deformation along the direction of the external force under the action of a pair of closely spaced, equal-sized, and opposite-directed lateral external forces. The force that can cause shear deformation of a material is called shear force or shear force. The cross section where shear deformation occurs is called the shear plane. The key to determining whether "shear" occurs is whether the cross section of the material undergoes relative displacement.

[0003] The existing Chinese patent with publication number CN114459884A discloses a concrete admixture shear resistance detection device, but the patent also has the following defects:

[0004] First, when performing shear force testing, the test piece needs to be placed horizontally on two supports, and then the test piece is pressed downward by a hydraulic cylinder until the test piece breaks, wherein the output direction of the hydraulic cylinder must be misaligned with the support, so that the test piece can be broken. However, in the above-mentioned patent, when performing shear force testing, one end of the test piece will always be pressed between the support platform and the first pressure plate, so that no matter how much pressure the first pressure plate applies, the output end of the test piece will not be broken, and ultimately the shear force of the current test piece cannot be detected;

[0005] Secondly, for some large building material inspection pieces, when the inspection piece breaks during the inspection process, the broken pieces will be scattered all over the ground, which will increase the trouble of subsequent cleaning of the inspection site. Moreover, when the inspection piece breaks, it is difficult for the traditional lifting device to lift the inspection piece out of the inspection site, which will waste a lot of time in the transportation of the inspection piece and ultimately reduce the inspection efficiency.

[0006] Therefore, it is necessary to provide a shear force detection device for building load-bearing beams to solve the above problems. Summary of the invention

[0007] Based on this, it is necessary to provide a shear force detection device for building load-bearing beams in response to the existing technical problems.

[0008] In order to solve the problems of the prior art, the technical solution adopted by the present invention is: a shear force detection device for a building load-bearing beam, comprising two groups of supporting seats and two groups of hydraulic cylinders, the two groups of supporting seats are spaced apart in the horizontal direction, the two groups of hydraulic cylinders are symmetrically fixed between the two groups of supporting seats, and each group of hydraulic cylinders is vertical, characterized in that it also includes a lifting device, the lifting device includes a supporting cloth and two groups of lifting and traction components, the two groups of lifting and traction components are respectively close to the two groups of supporting seats, each group of lifting and traction components includes a lifting frame and two groups of lifting rope mechanisms, the two groups of lifting rope mechanisms are symmetrically fixed on the lifting frame, and each group of lifting The rope mechanism includes a mounting frame, a reel, a lifting rope, a limiting ring, a cylinder, a transmission mechanism and a locking mechanism. The mounting frame is fixed on the lifting frame, the reel rotates horizontally on the mounting frame, the limiting ring slides on the mounting frame in the horizontal direction, and the axial direction of the limiting ring is perpendicular to the axial direction of the reel. One end of the lifting rope is wound around the reel, and the other end of the lifting rope passes horizontally through the limiting ring and then hangs down. The hanging end of each lifting rope is connected to the end angle corresponding to the support cloth. The cylinder is horizontally fixed on the mounting frame, the cylinder is used to drive the limiting ring to translate, the transmission mechanism connects the limiting ring and the reel, and the locking mechanism is used to lock the reel.

[0009] Furthermore, the lifting frame includes a strip pallet and two tripods. The strip pallet is horizontal. The placement frame is fixed to the top of the strip pallet. The two tripods are respectively arranged on both sides of the strip pallet. Each tripod is fixedly connected to the strip pallet. A cross beam is provided between the two tripods. The cross beam connects the two tripods. A lifting ear is fixed in the middle of the cross beam.

[0010] Furthermore, a receiving groove is provided on the mounting frame near the middle of the lifting frame, the reel is arranged in the receiving groove, a rotating shaft is coaxially fixedly connected to the reel, and two ends of the rotating shaft are respectively extended outside the reel, and two shaft seats are fixedly provided on the mounting frame, which are respectively located on both sides of the reel, and the two ends of the rotating shaft are respectively connected to the two shaft seats.

[0011] Furthermore, two symmetrical guide rods close to the outer end of the lifting frame are provided on the top of the placement frame, each guide rod is horizontal, and the end of each guide rod is fixed to the placement frame through a vertical bracket. Each guide rod is provided with a sliding sleeve, and a limiting ring is fixed between the two sliding sleeves.

[0012] Furthermore, a strip mounting plate located next to the mounting frame is fixed on the top of each strip support plate, each cylinder is horizontally fixed on the corresponding strip mounting plate, and a connecting piece is provided on the output end of each cylinder. Each connecting piece includes a connecting sleeve and a connecting rod No. 1. The connecting sleeve is coaxially sleeved on the output end of the cylinder, and the connecting rod No. 1 connects the connecting sleeve with the corresponding sliding sleeve.

[0013] Furthermore, the transmission mechanism includes a worm wheel, a worm, a rack, a gear and a bevel gear group. The worm wheel is coaxially fixed to one end of the rotating shaft, the worm rotates horizontally on the mounting frame, and the worm wheel is meshed with the worm, the rack slides horizontally on the mounting frame, the gear rotates on the mounting frame, and the gear is meshed with the rack, one end of the rack is connected to the corresponding sliding sleeve through a No. 2 connecting rod, and the bevel gear group includes a No. 1 bevel gear and a No. 2 bevel gear, the No. 1 bevel gear is coaxially fixed to the worm, the No. 2 bevel gear is coaxially fixed to the gear, and the No. 1 bevel gear is meshed with the No. 2 bevel gear.

[0014] Furthermore, the locking mechanism includes a driving member, a locking member and an elastic member, the driving member includes two driving sleeves, the two driving sleeves are respectively mounted on the two guide rods, a No. 3 connecting rod is provided between the two driving sleeves, one of the driving sleeves is connected to the output end of the cylinder through a No. 4 connecting rod, the locking member includes two locking pins and two guide sleeves, the two guide sleeves are respectively mounted on the two guide rods, a No. 5 connecting rod is provided between the two guide sleeves, the two locking pins are symmetrically fixed on the No. 5 connecting rod, each locking pin is parallel to the guide rod, convex rings are formed on both sides of each reel, and a number of locking holes are opened on each convex ring, the elastic member includes two springs respectively mounted on the two guide rods, each spring is located between the driving sleeve and the guide sleeve, and both ends of each spring fix the driving sleeve and the guide sleeve together.

[0015] Furthermore, a connecting sleeve sliding sleeve is arranged on the output end of the cylinder, and two symmetrical strip through grooves are provided on the connecting sleeve, and the length direction of each strip through groove is parallel to the axial direction of the cylinder. A transverse pin is provided on the output end of the cylinder, and the axial direction of the transverse pin is perpendicular to the axial direction of the cylinder. The transverse pin passes through the output end of the cylinder through the strip through groove, and the two ends of the transverse pin slide in the two strip through grooves respectively.

[0016] Furthermore, a first strip-shaped avoidance groove is provided at one end of the placement frame facing the outside of the reel, and a second strip-shaped avoidance groove is provided at one end of the strip-shaped support plate facing the outside of the reel.

[0017] Furthermore, circular holes are provided on the four end corners of the support cloth, and an embedded ring is fixed on each circular hole. A hook is fixed on the drooping end of each lifting rope, and each hook passes through the corresponding embedded ring.

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

[0019] First, before the shear force test, the load-bearing beam is suspended on two supports by the lifting device of the device. When the shear force test is performed, pressure is applied downward to the load-bearing beam by two sets of hydraulic cylinders. When the load-bearing beam breaks, the shear force of the load-bearing beam can be obtained by the upper computer. Compared with the above-mentioned patent, the device can successfully detect the shear force of the load-bearing beam;

[0020] Secondly, a support cloth is provided on the lifting device of the device. When the load-bearing beam is tested, the support cloth is placed horizontally under the load-bearing beam. When the load-bearing beam breaks, the broken stones will fall onto the support cloth. Then, when the support cloth lifts the load-bearing beam upward, the broken stones in the support cloth will be transferred out together, thus eliminating the trouble of cleaning the testing site later.

[0021] Thirdly, after the support cloth rises and contacts the bottom of the supporting beam, the reel will reel in the lifting rope, and the corresponding lifting rope will pull the end corners of the support cloth toward the load-bearing beam, so that the four end corners of the support cloth will gather toward the load-bearing beam, and then the support cloth will cover the load-bearing beam from the bottom, and finally the broken load-bearing beam will be lifted up by the support cloth, and the broken load-bearing beam can be transported out of the inspection site after one transfer. Compared with traditional lifting devices, this device can effectively reduce the transfer time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 yes Figure 1 A1 is a partial enlarged schematic diagram;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the lifting and traction assembly;

[0025] Figure 4 yes Figure 3 A2 is a partial enlarged schematic diagram;

[0026] Figure 5 This is a three-dimensional structure diagram of the suspension rope mechanism. Figure 1 ;

[0027] Figure 6 yes Figure 5 A3 is a partial enlarged schematic diagram;

[0028] Figure 7 This is a three-dimensional structure diagram of the suspension rope mechanism. Figure 2 ;

[0029] Figure 8 It is a top view of the suspension rope mechanism;

[0030] Fig. 9 yes Figure 8 Section view along line AA.

[0031] The numbers in the figure are: 1, supporting seat; 2, hydraulic cylinder; 3, supporting cloth; 4, lifting frame; 5, placing frame; 6, reel; 7, lifting rope; 8, limiting ring; 9, cylinder; 10, strip supporting plate; 11, tripod; 12, crossbeam; 13, lifting ear; 14, receiving slot; 15, rotating shaft; 16, shaft seat; 17, guide rod; 18, vertical support; 19, sliding sleeve; 20, strip mounting plate; 21, connecting sleeve; 22, No. 1 connecting rod; 23, worm gear; 2 4. Worm; 25. Rack; 26. Gear; 27. Connecting rod No. 2; 28. Bevel gear No. 1; 29. ​​Bevel gear No. 2; 30. Driving sleeve; 31. Connecting rod No. 3; 32. Connecting rod No. 4; 33. Locking pin; 34. Guide sleeve; 35. Connecting rod No. 5; 36. Locking hole; 37. Spring; 38. Strip through groove; 39. Transverse pin; 40. Strip avoidance groove No. 1; 41. Strip avoidance groove No. 2; 42. Round hole; 43. Inlay ring; 44. Hook. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] refer to Figures 1 to 9 The shear force detection device for building load-bearing beams shown in the figure comprises two groups of supporting seats 1 and two groups of hydraulic cylinders 2, the two groups of supporting seats 1 are spaced apart in the horizontal direction, the two groups of hydraulic cylinders 2 are symmetrically fixed between the two groups of supporting seats 1, and each group of hydraulic cylinders 2 is vertical, and is characterized in that it also comprises a lifting device, the lifting device comprises a supporting cloth 3 and two groups of lifting and traction components, the two groups of lifting and traction components are respectively close to the two groups of supporting seats 1, each group of lifting and traction components comprises a lifting frame 4 and two groups of lifting rope mechanisms, the two groups of lifting rope mechanisms are symmetrically fixed on the lifting frame 4, and each group of lifting rope mechanisms comprises a placement frame 5, a reel 6, and a lifting rope 7. limit ring 8, cylinder 9, transmission mechanism and locking mechanism. The mounting frame 5 is fixed on the lifting frame 4. The reel 6 rotates horizontally on the mounting frame 5. The limit ring 8 slides on the mounting frame 5 in the horizontal direction, and the axial direction of the limit ring 8 is perpendicular to the axial direction of the reel 6. One end of the lifting rope 7 is wound around the reel 6, and the other end of the lifting rope 7 passes horizontally through the limit ring 8 and then hangs down. The hanging end of each lifting rope 7 is connected to the end angle corresponding to the support cloth 3. The cylinder 9 is horizontally fixed on the mounting frame 5. The cylinder 9 is used to drive the limit ring 8 to translate. The transmission mechanism connects the limit ring 8 and the reel 6. The locking mechanism is used to lock the reel 6.

[0034] The entire inspection room is divided into an inspection area, a loading area and an unloading area. The inspection area, the loading area and the unloading area are not shown in the figure. The inspection area, the loading area and the unloading area need to be reasonably divided according to the size of the actual inspection room. The support seat 1 and the hydraulic cylinder 2 are both installed in the inspection area, and a top frame (not shown in the figure) is provided on the ceiling of the inspection room. The two groups of hydraulic cylinders 2 of the device are connected to the top frame, and a three-axis displacement device (not shown in the figure) is installed on the top frame. The three-axis displacement device is used to synchronously drive the two groups of lifting frames 4 to move across the area;

[0035] The shear force detection of the load-bearing beam is divided into a loading stage, a detection stage and a unloading stage. The specific process of the loading stage is as follows: the two groups of lifting frames 4 are driven and displaced to the loading area by the three-axis displacement device, and then the two groups of lifting frames 4 descend synchronously. During the descent of the lifting frames 4, the output end of each group of cylinders 9 gradually extends out, so that the cylinder 9 will drive the limit ring 8 to translate outward. After the limit ring 8 is displaced, the reel 6 starts to rotate and unwinds the lifting rope 7 through the action of the transmission mechanism. Since the drooping end of each lifting rope 7 is connected to the end angle of the support cloth 3, the support cloth 3 will gradually flatten during the descent process through the synchronous drive of the four lifting ropes 7. When the support cloth 3 contacts the ground, the support cloth 3 is completely horizontal. After that, the load-bearing beam can be placed horizontally on the support cloth 3 through a roller transfer vehicle (not shown in the figure). When the load-bearing beam is pressed on the support cloth 3, the output end of each group of cylinders 9 begins to retract. When the support frame 3 is lifted up, the cylinder 9 stops working and the locking mechanism locks the corresponding reel 6. At this time, the reel 6 cannot rotate. When the reel 6 is locked, the two sets of lifting frames 4 rise synchronously. The four lifting ropes 7 drive the support frame 3 to lift the load-bearing beam. Thereafter, the two sets of lifting frames 4 move to the detection area. When the lifting frames 4 enter the detection area, the lifting frames 4 will gradually approach the two sets of supporting seats 1. During this process, the load-bearing beam lifted by the support frame 3 will pass between the supporting seat 1 and the hydraulic cylinder 2. When the load-bearing beam is translated to the top of the supporting seat 1, the two sets of lifting frames 4 descend synchronously to place the load-bearing beam on the two sets of supporting seats 1 (such as Figure 1As shown, the load-bearing beam is placed on two groups of supporting seats 1), and the two groups of supporting seats 1 are used to hold up the two ends of the load-bearing beam respectively. When the load-bearing beam is placed, the two groups of lifting frames 4 continue to descend. During the descent of the lifting frames 4, each group of cylinders 9 starts to drive the limit ring 8 to translate outward, and the locking mechanism unlocks the reel 6, and the reel 6 starts to unwind the lifting rope 7. Finally, the descending support cloth 3 will be unfolded on the ground in a horizontal state. When the support cloth 3 contacts the ground, the lifting frames 4 stop descending. At this time, the two groups of lifting frames 4 are suspended at the load-bearing beam. The upper part of the load-bearing beam is shown in the figure below. After that, the shear force detection phase is entered. The specific process of the detection phase is as follows: the output ends of the two groups of hydraulic cylinders 2 simultaneously apply pressure downward to the top of the load-bearing beam. A pressure sensor (not shown in the figure) is provided on the output end of each group of hydraulic cylinders 2. A host computer (not shown in the figure) is provided in the detection area. The host computer is used to display the compression value of the load-bearing beam in real time. When the load-bearing beam is broken under pressure, the host computer will display the current shear force value of the load-bearing beam. When the load-bearing beam is broken, the scattered gravel will fall downward. It falls onto the horizontal support cloth 3. When the shear force test is completed, it enters the unloading stage. The specific process is as follows: the two sets of lifting frames 4 rise synchronously, and the horizontal support cloth 3 will gradually approach the load-bearing beam. When the support cloth 3 contacts the load-bearing beam, the output end of the cylinder 9 begins to retract. At this time, the reel 6 will reel up the lifting rope 7, and the four end corners of the support cloth 3 will gather toward the load-bearing beam. Finally, the support cloth 3 will cover the load-bearing beam. When the support cloth 3 covers the load-bearing beam, the cylinder 9 stops working, and the locking mechanism locks the reel 6 again. 4 starts to rise, and then the two sets of lifting frames 4 will transfer the lifted load-bearing beam to the unloading area. After the two sets of lifting frames 4 are translated into the unloading area, the two sets of lifting frames 4 start to descend, and the support cloth 3 gradually unfolds and becomes horizontal during the descending process. When the support cloth 3 contacts the ground, the load-bearing beam on the support cloth 3 can be transferred by a forklift (shown in the position diagram), wherein, since the load-bearing beam is covered by the support cloth 3 when it is lifted, even if the load-bearing beam breaks during the detection stage, the broken load-bearing beam can be transported out of the detection area through the support cloth 3.

[0036] In order to show the specific structure of the lifting frame 4, the following features are set:

[0037] The lifting frame 4 includes a strip support plate 10 and two tripods 11. The strip support plate 10 is horizontal. The placement frame 5 is fixed to the top of the strip support plate 10. The two tripods 11 are respectively arranged on both sides of the strip support plate 10. Each tripod 11 is fixedly connected to the strip support plate 10. A cross beam 12 is provided between the two tripods 11. The cross beam 12 connects the two tripods 11. A lifting ear 13 is fixedly provided in the middle of the cross beam 12.

[0038] During actual installation, each lifting ear 13 is connected to the terminal of the three-axis displacement device, the strip support plate 10 is used to support the placement frame 5, and the tripods 11 arranged on both sides of the strip support plate 10 are used to enhance the stability of the entire lifting frame 4.

[0039] In order to show how the reel 6 is rotatably connected to the mounting frame 5, the following features are provided:

[0040] The placement frame 5 is provided with a receiving slot 14 near the middle of the lifting frame 4, and the reel 6 is arranged in the receiving slot 14 (such as Figure 5 As shown in the figure, a rotating shaft 15 is coaxially fixedly connected to the reel 6, and the two ends of the rotating shaft 15 are respectively extended outside the reel 6. Two shaft seats 16 respectively located on both sides of the reel 6 are fixedly provided on the mounting frame 5, and the two ends of the rotating shaft 15 are respectively connected to the two shaft seats 16.

[0041] The reel 6 is rotated by a rotating shaft 15 arranged thereon. When the reel 6 is arranged in the accommodating groove 14, the reel 6 and the strip support plate 10 are vertically spaced apart by the supporting effect of the mounting frame 5, so as to prevent the rope 7 wound into the reel 6 from rubbing against the strip support plate 10 after the reel 6 winds up the rope 7.

[0042] In order to show how the stop ring 8 is slidably connected to the mounting frame 5, the following features are provided:

[0043] Two symmetrical guide rods 17 are provided on the top of the placement frame 5 and are close to the outer end of the lifting frame 4. Each guide rod 17 is horizontal, and the end of each guide rod 17 is fixedly connected to the placement frame 5 through a vertical bracket 18. Each guide rod 17 is sleeved with a sliding sleeve 19, and the limiting ring 8 is fixed between the two sliding sleeves 19.

[0044] The limit ring 8 slides through the sliding sleeve 19 mounted on the guide rod 17. The two guide rods 17 are provided to stabilize the sliding of the limit ring 8. The limit ring 8 is used to control the sagging point of the corresponding lifting rope 7. When the lifting rope 7 passes through the limit ring 8 horizontally, the lifting rope 7 will sag immediately. When the support cloth 3 needs to be flattened, each cylinder 9 will drive the corresponding limit ring 8 to translate outward, so that the lifting rope 7 will sag farther away from the load-bearing beam, and finally the support cloth 3 will be completely flattened. When the support cloth 3 is needed to cover the load-bearing beam, each cylinder 9 will control the corresponding limit ring 8 to translate inward, so that in the process of the reel 6 winding up the lifting rope 7, the limit ring 8 will not hinder the lifting rope 7 from pulling the end corners of the support cloth 3 upward, and finally ensure that the four end corners of the support cloth 3 can gather toward the load-bearing beam.

[0045] In order to show how the cylinder 9 is connected to the stop ring 8, the following features are set:

[0046] The top of each strip support plate 10 is fixed with a strip mounting plate 20 located beside the mounting frame 5, and each cylinder 9 is horizontally fixed on the corresponding strip mounting plate 20 (such as Figure 5As shown), a connecting piece is provided on the output end of each cylinder 9, and each connecting piece includes a connecting sleeve 21 and a connecting rod 22. The connecting sleeve 21 is coaxially sleeved on the output end of the cylinder 9, and the connecting rod 22 connects the connecting sleeve 21 with the corresponding sliding sleeve 19.

[0047] When the cylinder 9 is started, the cylinder 9 will drive the corresponding sliding sleeve 19 to move through the connecting sleeve 21 and the No. 1 connecting rod 22. Among them, the cylinder 9 used in this device is a long-axis cylinder. When the cloth 3 needs to cover the load-bearing beam, the output end of the cylinder 9 retracts inward, so that the cylinder 9 will drive the limit ring 8 to translate inward. During this process, the reel 6 reels the lifting rope 7. When the cloth 3 needs to be flattened, the output end of the cylinder 9 extends outward, so that the cylinder 9 will drive the limit ring 8 to translate outward. During this process, the reel 6 unwinds the lifting rope 7, and finally the cloth 3 is laid flat by four lifting ropes 7.

[0048] In order to show the specific structure of the transmission mechanism, the following features are set:

[0049] The transmission mechanism includes a worm wheel 23, a worm 24, a rack 25, a gear 26 and a bevel gear set. The worm wheel 23 is coaxially fixed to one end of the rotating shaft 15 (such as Figure 7 As shown in the figure, the worm 24 rotates horizontally on the mounting frame 5, and the worm wheel 23 is meshed with the worm 24, the rack 25 slides horizontally on the mounting frame 5, the gear 26 rotates on the mounting frame 5, and the gear 26 is meshed with the rack 25, one end of the rack 25 is connected to the corresponding sliding sleeve 19 through a No. 2 connecting rod 27, the bevel gear group includes a No. 1 bevel gear 28 and a No. 2 bevel gear 29, the No. 1 bevel gear 28 is coaxially fixedly connected to the worm 24, the No. 2 bevel gear 29 is coaxially fixedly connected to the gear 26, and the No. 1 bevel gear 28 and the No. 2 bevel gear 29 are meshed.

[0050] When the cylinder 9 is started, the cylinder 9 will drive the limit ring 8 to translate, and the limit ring 8 will drive the two sliding sleeves 19 to move together, one of the sliding sleeves 19 will drive the rack 25 to translate, and when the rack 25 translates, the rack 25 will drive the gear 26 to rotate, so that the gear 26 will drive the No. 2 bevel gear 29 to rotate, and when the No. 2 bevel gear 29 rotates, the worm 24 will be driven to rotate through the transmission action of the No. 1 bevel gear 28, and finally the worm 24 will drive the reel 6 to rotate through the worm wheel 23. Since the worm wheel 23 cannot drive the worm 24 to rotate, the reel 6 will not rotate by itself, so when the cylinder 9 stops, the reel 6 will stop at the current state, and the four suspension ropes 7 will not extend or retract, finally ensuring that the support cloth 3 can lift the load-bearing beam.

[0051] In order to show the specific structure of the locking mechanism, the following features are set:

[0052] The locking mechanism includes a driving member, a locking member and an elastic member. The driving member includes two driving sleeves 30. The two driving sleeves 30 are respectively sleeved on the two guide rods 17. A third connecting rod 31 (such as Figure 8 As shown in FIG. 1 ), one of the drive sleeves 30 is connected to the output end of the cylinder 9 through a fourth connecting rod 32 (as shown in FIG. Figure 6 As shown in the figure, the locking member includes two locking pins 33 and two guide sleeves 34. The two guide sleeves 34 are respectively sleeved on the two guide rods 17. A No. 5 connecting rod 35 is provided between the two guide sleeves 34. The two locking pins 33 are symmetrically fixed on the No. 5 connecting rod 35. Each locking pin 33 is parallel to the guide rod 17. Both sides of each reel 6 are formed with convex rings. Each convex ring is provided with a plurality of locking holes 36 (combined with Figure 7 ), the elastic member includes two springs 37 respectively sleeved on the two guide rods 17, each spring 37 is located between the drive sleeve 30 and the guide sleeve 34, and both ends of each spring 37 fix the drive sleeve 30 and the guide sleeve 34 together.

[0053] The end of each locking pin 33 facing the reel 6 is round-headed. When the support cloth 3 changes from a horizontal state to a gathered state, the output end of the cylinder 9 retracts. At this time, the output end of the cylinder 9 drives the two drive sleeves 30 to slide on the guide rod 17 toward the reel 6 through the fourth connecting rod 32. The two drive sleeves 30 drive the two guide sleeves 34 to slide toward the reel 6 through the connection of the spring 37. Finally, the two locking pins 33 arranged between the two guide sleeves 34 will gradually approach the reel 6. At the same time, the reel 6 rotates to reel the sling 7. When the round end of the locking pin 33 is aligned with the reel 6, the reel 6 rotates to reel the sling 7. When the outer convex rings collide with each other, as the cylinder 9 continues to work, the drive sleeve 30 will press the spring 37 toward the guide sleeve 34, and finally the spring 37 will generate elastic force. When the reel 6 rotates until the locking hole 36 on the convex ring corresponds to the locking pin 33, the spring 37 will use the elastic force to bounce the locking pin 33 into the locking hole 36. At this time, the entire reel 6 is locked. In actual use, a laser sensor (not shown in the figure) can be installed on the side of the reel 6. The laser sensor is used to sense whether the locking pin 33 passes through the corresponding locking hole 36. When the locking pin 33 passes through the locking hole 36, the cylinder 9 will stop working immediately.

[0054] In order to ensure that the reel 6 is unlocked before rotation, the following features are provided:

[0055] The connecting sleeve 21 is slidably sleeved on the output end of the cylinder 9. Two symmetrical strip through grooves 38 are provided on the connecting sleeve 21. The length direction of each strip through groove 38 is parallel to the axial direction of the cylinder 9. A transverse pin 39 is provided on the output end of the cylinder 9. The axial direction of the transverse pin 39 is perpendicular to the axial direction of the cylinder 9. The transverse pin 39 passes through the output end of the cylinder 9 through the strip through groove 38, and the two ends of the transverse pin 39 slide in the two strip through grooves 38 respectively.

[0056] When the output end of the cylinder 9 retracts, the output end of the cylinder 9 will drive the transverse pin 39 to move. During this process, the transverse pin 39 will move from one end of the strip groove 38 to the other end of the strip groove 38. When the transverse pin 39 moves to the end of the strip groove 38 close to the reel 6, the transverse pin 39 will drive the connecting sleeve 21 to move along with the output end of the cylinder 9. When the output end of the cylinder 9 extends, the output end of the cylinder 9 will first drive the locking pin 33 to be pulled out from the corresponding locking hole 36 through the driving sleeve 30. When the locking pin 33 is pulled out, the locking pin 33 will be pulled out from the corresponding locking hole 36. After 33 is pulled out from the lock hole 36, the reel 6 is in a free state. Thereafter, the output end of the cylinder 9 will drive the transverse pin 39 to collide with the end of the strip groove 38 away from the reel 6, and finally the connecting sleeve 21 will be driven to move together with the output end of the cylinder 9. When the connecting sleeve 21 moves, the reel 6 starts to unwind the sling rope 7. In summary, the cooperation between the transverse pin 39 and the strip groove 38 enables the limit ring 8 to be delayed in translation with the output end of the cylinder 9, and finally ensures that the reel 6 is unlocked before rotation.

[0057] In order to enable the mounting frame 5 and the strip support plate 10 to avoid the suspension rope 7, the following features are provided:

[0058] One end of the mounting frame 5 facing the outer side of the reel 6 is provided with a strip-shaped avoidance groove 40 (combined with Figure 3 and Figure 4 As shown in the figure), a second strip-shaped avoidance groove 41 is provided at one end of the strip-shaped support plate 10 facing the outside of the reel 6.

[0059] The sling rope 7 led out from the reel 6 will hang down after passing through the limit ring 8. At this time, the downwardly hanging end of the sling rope 7 will pass through the No. 1 strip avoidance groove 40 and the No. 2 strip avoidance groove 41 in sequence. When the reel 6 reels the sling rope 7, the hanging end of the sling rope 7 will slide in the No. 1 strip avoidance groove 40 and the No. 2 strip avoidance groove 41. In summary, the No. 1 strip avoidance groove 40 and the No. 2 strip avoidance groove 41 allow the sling rope 7 to move freely when it is reeled in and out.

[0060] In order to show how the hanging end of each suspension rope 7 is connected to the support cloth 3, the following features are set:

[0061] Circular holes 42 are formed on the four corners of the support cloth 3 , and an embedded ring 43 is fixedly formed on each circular hole 42 . A hook 44 is fixedly formed on the drooping end of each suspension rope 7 , and each hook 44 passes through the corresponding embedded ring 43 .

[0062] When the drooping end of the suspension rope 7 rises, the end corner of the support cloth 3 is lifted by the hook 44 provided on the suspension rope 7, thereby finally ensuring that the support cloth 3 can cover the load-bearing beam upward.

[0063] Working principle:

[0064] The shear force detection of the load-bearing beam is divided into a loading stage, a detection stage and a unloading stage. The specific process of the loading stage is as follows: the two groups of lifting frames 4 are driven and displaced to the loading area by the three-axis displacement device, and then the two groups of lifting frames 4 are synchronously lowered. During the lowering process of the lifting frames 4, the output end of each group of cylinders 9 gradually extends out, so that the cylinders 9 will drive the limit ring 8 to translate outward. When the limit ring 8 is displaced, the reel 6 starts to rotate and unwinds the lifting rope 7 through the action of the transmission mechanism. Since the drooping end of each lifting rope 7 is connected to the end angle of the support cloth 3, the four With the synchronous driving of the four lifting ropes 7, the support cloth 3 will gradually flatten during the descent. When the support cloth 3 touches the ground, the support cloth 3 is completely horizontal. Thereafter, the load-bearing beam can be placed horizontally on the support cloth 3 through a roller transfer vehicle (not shown in the figure). When the load-bearing beam is pressed on the support cloth 3, the output end of each group of cylinders 9 begins to retract, so that the limit ring 8 will translate inward. At the same time, the reel 6 begins to reel in the lifting ropes 7. During this process, the four lifting ropes 7 will synchronously pull the four end corners of the support cloth 3 toward the load-bearing beam, so that the four end corners of the support cloth 3 will gather inward. Finally, the load-bearing beam will be covered. When the support cloth 3 covers the load-bearing beam, the cylinder 9 stops working, and the locking mechanism locks the corresponding reel 6. At this time, the reel 6 cannot rotate. When the reel 6 is locked, the two sets of lifting frames 4 rise synchronously, and the four lifting ropes 7 will drive the support cloth 3 to lift the load-bearing beam. Thereafter, the two sets of lifting frames 4 move to the detection area. When the lifting frames 4 enter the detection area, the lifting frames 4 will gradually approach the two sets of supporting seats 1. During this process, the load-bearing beam lifted by the support cloth 3 will pass between the supporting seat 1 and the hydraulic cylinder 2. When the load-bearing beam is translated to the top of the supporting seat 1 When the load-bearing beam is placed on the two sets of supporting seats 1, the two sets of supporting seats 1 are used to hold up the two ends of the load-bearing beam respectively. When the load-bearing beam is placed, the two sets of lifting frames 4 continue to descend. During the descent of the lifting frames 4, each set of cylinders 9 starts to drive the limit ring 8 to translate outward, and the locking mechanism unlocks the reel 6, and the reel 6 starts to unwind the suspension rope 7. Finally, the descending support cloth 3 will be unfolded on the ground in a horizontal state. When the support cloth 3 contacts the ground, the lifting frames 4 stop descending. At this time, the two sets of lifting frames 4 are both suspended above the load-bearing beam.

[0065] After that, the shear force detection phase is entered. The specific process of the detection phase is as follows: the output ends of the two groups of hydraulic cylinders 2 synchronously apply downward pressure to the top of the load-bearing beam, wherein a pressure sensor (not shown in the figure) is provided on the output end of each group of hydraulic cylinders 2, and a host computer (not shown in the figure) is provided in the detection area. The host computer is used to display the compression value of the load-bearing beam in real time. When the load-bearing beam is broken under pressure, the host computer will display the current shear force value of the load-bearing beam, and when the load-bearing beam is broken, the scattered gravel will fall downward onto the horizontal support cloth 3;

[0066] When the shear force detection is completed, the material unloading stage begins. The specific process is as follows: the two sets of lifting frames 4 rise synchronously, and the horizontal support cloth 3 will gradually approach the load-bearing beam upward. When the support cloth 3 contacts the load-bearing beam, the output end of the cylinder 9 begins to retract. At this time, the reel 6 will reel up the suspension rope 7, and the four end corners of the support cloth 3 will gather toward the load-bearing beam. Finally, the support cloth 3 will cover the load-bearing beam. When the support cloth 3 covers the load-bearing beam, the cylinder 9 stops working, and the locking mechanism locks the reel 6 again, and the two sets of lifting frames 4 begin to rise. , thereafter, the two groups of lifting frames 4 will transfer the lifted load-bearing beams to the unloading area. After the two groups of lifting frames 4 are translated into the unloading area, the two groups of lifting frames 4 begin to descend, and the support cloth 3 gradually unfolds and becomes horizontal during the descent. When the support cloth 3 contacts the ground, the load-bearing beams on the support cloth 3 can be transferred by a forklift (shown in the position diagram). Among them, since the load-bearing beams are covered by the support cloth 3 when lifted, even if the load-bearing beam breaks during the detection stage, the broken load-bearing beams can be transported out of the detection area through the support cloth 3.

[0067] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A shear force detection device for a load-bearing beam of a building, comprising two groups of supporting seats (1) and two groups of hydraulic cylinders (2), wherein the two groups of supporting seats (1) are spaced apart in the horizontal direction, and the two groups of hydraulic cylinders (2) are symmetrically fixed between the two groups of supporting seats (1), and each group of hydraulic cylinders (2) is vertical, characterized in that: The lifting device also includes a lifting device, which includes a support cloth (3) and two sets of lifting and traction components. The two sets of lifting and traction components are respectively close to the two sets of supporting seats (1). Each set of lifting and traction components includes a lifting frame (4) and two sets of lifting rope mechanisms. The two sets of lifting rope mechanisms are symmetrically fixed on the lifting frame (4). Each set of lifting rope mechanisms includes a placement frame (5), a reel (6), a lifting rope (7), a limiting ring (8), a cylinder (9), a transmission mechanism and a locking mechanism. The placement frame (5) is fixed on the lifting frame (4). The reel (6) rotates horizontally on the placement frame (5). The positioning ring (8) slides on the mounting frame (5) in the horizontal direction, and the axial direction of the positioning ring (8) is perpendicular to the axial direction of the reel (6). One end of the lifting rope (7) is wound around the reel (6), and the other end of the lifting rope (7) passes horizontally through the positioning ring (8) and then hangs down. The hanging end of each lifting rope (7) is connected to the corresponding end angle of the support cloth (3). The cylinder (9) is horizontally fixed on the mounting frame (5). The cylinder (9) is used to drive the positioning ring (8) to translate. The transmission mechanism connects the positioning ring (8) and the reel (6) in a transmission manner, and the locking mechanism is used to lock the reel (6). The transmission mechanism comprises a worm wheel (23), a worm (24), a rack (25), a gear (26) and a bevel gear group, wherein the worm wheel (23) is coaxially fixedly connected to one end of the rotating shaft (15), the worm (24) rotates horizontally on the mounting frame (5), and the worm wheel (23) and the worm (24) are meshed, the rack (25) slides horizontally on the mounting frame (5), the gear (26) rotates on the mounting frame (5), and the gear (26) and the rack (25) are meshed, one end of the rack (25) is connected to the corresponding sliding sleeve (19) through a No. 2 connecting rod (27), and the bevel gear group comprises a No. 1 bevel gear (28) and a No. 2 bevel gear (29), the No. 1 bevel gear (28) is coaxially fixedly connected to the worm (24), the No. 2 bevel gear (29) is coaxially fixedly connected to the gear (26), and the No. 1 bevel gear (28) and the No. 2 bevel gear (29) are meshed; The locking mechanism comprises a driving member, a locking member and an elastic member, wherein the driving member comprises two driving sleeves (30), the two driving sleeves (30) are respectively sleeved on two guide rods (17), a No. 3 connecting rod (31) is provided between the two driving sleeves (30), one of the driving sleeves (30) is connected to the output end of the cylinder (9) via a No. 4 connecting rod (32), and the locking member comprises two locking pins (33) and two guide sleeves (34), the two guide sleeves (34) are respectively sleeved on the two guide rods (17), a No. 5 connecting rod (31) is provided between the two guide sleeves (34). A connecting rod (35), two locking pins (33) are symmetrically fixed on the No. 5 connecting rod (35), each locking pin (33) is parallel to the guide rod (17), each reel (6) is formed with a convex ring on both sides, each convex ring is provided with a plurality of locking holes (36), the elastic member comprises two springs (37) respectively sleeved on the two guide rods (17), each spring (37) is located between the driving sleeve (30) and the guide sleeve (34), and both ends of each spring (37) fix the driving sleeve (30) and the guide sleeve (34) together; The mounting frame (5) is provided with a receiving slot (14) near the middle of the lifting frame (4), the reel (6) is arranged in the receiving slot (14), the reel (6) is coaxially fixedly connected with a rotating shaft (15), the two ends of the rotating shaft (15) are respectively extended outside the reel (6), and the mounting frame (5) is fixedly provided with two shaft seats (16) respectively located on both sides of the reel (6), and the two ends of the rotating shaft (15) are respectively connected to the two shaft seats (16); The top of the placement frame (5) is provided with two symmetrical guide rods (17) close to the outer end of the lifting frame (4), each guide rod (17) is horizontal, and the end of each guide rod (17) is fixedly connected to the placement frame (5) through a vertical bracket (18), and each guide rod (17) is sleeved with a sliding sleeve (19), and a limiting ring (8) is fixed between the two sliding sleeves (19); A first strip-shaped avoidance groove (40) is formed at one end of the placement frame (5) facing the outside of the reel (6), and a second strip-shaped avoidance groove (41) is formed at one end of the strip-shaped support plate (10) facing the outside of the reel (6).

2. A shear force detection device for building load-bearing beams according to claim 1, characterized in that: The lifting frame (4) comprises a strip support plate (10) and two tripods (11). The strip support plate (10) is horizontal. The placement frame (5) is fixed to the top of the strip support plate (10). The two tripods (11) are respectively arranged on both sides of the strip support plate (10). Each tripod (11) is fixedly connected to the strip support plate (10). A crossbeam (12) is arranged between the two tripods (11). The crossbeam (12) connects the two tripods (11). A lifting lug (13) is fixedly arranged in the middle of the crossbeam (12).

3. A shear force detection device for building load-bearing beams according to claim 2, characterized in that: A strip mounting plate (20) located beside the mounting frame (5) is fixedly provided on the top of each strip support plate (10), each cylinder (9) is horizontally fixed on the corresponding strip mounting plate (20), and a connecting piece is provided on the output end of each cylinder (9), each connecting piece comprises a connecting sleeve (21) and a first connecting rod (22), the connecting sleeve (21) is coaxially sleeved on the output end of the cylinder (9), and the first connecting rod (22) connects the connecting sleeve (21) to the corresponding sliding sleeve (19).

4. A shear force detection device for building load-bearing beams according to claim 3, characterized in that: The connecting sleeve (21) is slidably mounted on the output end of the cylinder (9). The connecting sleeve (21) is provided with two symmetrical strip-shaped through grooves (38). The length direction of each strip-shaped through groove (38) is parallel to the axial direction of the cylinder (9). A transverse pin (39) is provided on the output end of the cylinder (9). The axial direction of the transverse pin (39) is perpendicular to the axial direction of the cylinder (9). The transverse pin (39) passes through the output end of the cylinder (9) through the strip-shaped through groove (38), and the two ends of the transverse pin (39) slide in the two strip-shaped through grooves (38) respectively.

5. The shear force detection device for building load-bearing beams according to claim 1, characterized in that: Circular holes (42) are formed at the four end corners of the support cloth (3), and each circular hole (42) is fixedly provided with an embedded ring (43). A hanging hook (44) is fixedly provided at the drooping end of each suspension rope (7), and each suspension hook (44) passes through the corresponding embedded ring (43).

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