Building construction temporary steel trestle bearing capacity detection device and detection method thereof

Abstract

The invention discloses a building construction temporary steel trestle bearing capacity detection device and a detection method thereof, and relates to the technical field of building bridge bearing capacity detection.The building construction temporary steel trestle bearing capacity detection device comprises a bottom plate, a detector body and supporting legs fixedly installed on the periphery of the bottom of the bottom plate; an inclined rod is fixedly connected to one side of the top of the bottom plate, a fixing plate is installed on one side of the inclined rod, a supporting column is fixedly connected to the bottom of the inclined rod, an annular spherical shell sleeve is fixedly connected to the top end of the inclined rod, a supporting assembly is arranged on one side of the fixing plate, and an adjusting assembly is arranged on the other side of the fixing plate. The supporting assembly comprises connecting plates which are symmetrically arranged up and down, and one side of the interior of each connecting plate is fixedly connected with a one-way screw rod, so that the problems that the position of the detector is not fixed during detection, and the bridge floor vibrates during bridge load detection, so that the vibration of the detector is possibly caused, and the detection efficiency is improved are solved. And the accuracy of the pressure needle detection structure is influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of construction bridge bearing capacity detection technology, in particular to a construction temporary steel trestle bearing capacity detection device and a detection method thereof. Background Art

[0002] For important large bridges, further load tests are required to assess the actual bearing capacity. The load test method mainly involves pressing the detection equipment tightly against the bottom of the bridge, and measuring the changes in the pointer of the detection equipment when it is unloaded and loaded, so as to obtain the maximum deflection and deformation values. However, during the test, it is necessary to ensure that the pressure needle of the detector is vertically distributed with the contact surface of the bridge, and the pressure needle moves up and down in the detector to better detect the deflection. However, since the bridge deck will vibrate during the bridge load test, it may drive the vibration of the detector through the pressure needle, affecting the accuracy of the detection structure.

[0003] For example, a bearing capacity testing device for a temporary steel trestle under construction, with publication number CN115265969A, solves the problem of inaccurate measurement results caused by the pressure needle of the testing instrument not being able to press vertically against the bottom of the bridge. The device includes a magnetic hanging plate with a control switch, a magnetic rod rotatably connected to the magnetic hanging plate, and a testing instrument plate on the magnetic rod; a rotating assembly for rotating and adjusting the magnetic rod to bring the testing instrument plate close to the bottom of the bridge; and a straightening assembly for adjusting the testing instrument plate to a vertical position. By rotating, adjusting and fixing the position of the magnetic rod, the testing instrument plate is brought close to the bottom of the bridge. Under the action of a gravity ball, the testing instrument plate automatically adjusts its position so that the pressure needle of the testing instrument plate is vertically aligned with the bottom of the bridge, ensuring the test data. At the same time, the reciprocating mesh frame quickly stops the shaking of the gravity ball during the adjustment process and keeps the center of gravity position stationary. However, during the test process, the testing instrument is not fixed in position. Since the bridge deck vibrates during the bridge load test, this may cause the testing instrument itself to vibrate, affecting the accuracy of the pressure needle detection structure, resulting in certain defects.

[0004] Therefore, a bearing capacity detection device and a detection method for a temporary steel trestle for construction are proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a bearing capacity detection device and a detection method for a temporary steel trestle for construction, so as to solve the problem that the detector is not fixed in position during detection, and the bridge deck will vibrate during bridge load detection, which may cause the detector itself to vibrate, affecting the accuracy of the pressure needle detection structure.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a bearing capacity detection device for a temporary steel trestle for construction, comprising a base plate, a detector body, and legs fixedly mounted around the bottom of the base plate, wherein one side of the legs is connected to a latch through a mounting plate;

[0007] It is characterized by further comprising:

[0008] A slanted rod is fixedly connected to one side of the top of the bottom plate, a fixing plate is installed on one side of the slanted rod, a support is fixedly connected to the bottom of the slanted rod, and an annular spherical shell is fixedly connected to the top of the slanted rod;

[0009] A support assembly is provided on one side of the fixing plate, and an adjustment assembly is provided on the other side of the fixing plate;

[0010] The support assembly includes a connecting plate symmetrically arranged in the upper and lower parts, a one-way screw is fixedly connected to one side of the inner part of the connecting plate, a guide rod is rotatably connected to the other side of the inner part of the connecting plate, a sliding seat is threadedly connected to the outer side of the one-way screw, a fixed block is symmetrically fixedly connected to the middle part of one side of the fixed plate, and the fixed block is fixedly connected to a limiting frame on the side away from the fixed plate.

[0011] Preferably, the detector body is fixedly mounted on the sliding seat, the internal sliding connection of the limit frame is connected to a vertical rod, the upper outer side of the vertical rod is fixedly connected to a blocking plate, the outer side of the vertical rod is sleeved with a spring, the spring is located above the limit frame, the spring is slidingly connected to the vertical rod, the lower outer side of the vertical rod is fixedly connected to a tooth block, the lower outer side of the detector body is symmetrically fixedly connected to side blocks, the bottom of the side block is fixedly connected to a support rod, and the sliding seat is slidingly connected to the guide rod.

[0012] By adopting the above technical solution, when the bridge passes through the load, the moving block will support the detector body upward, thereby improving the stability and support strength of the detector body, reducing the vibration displacement of the detector body during detection, and improving the movement accuracy of the pressure needle.

[0013] Preferably, the bottom end of the support rod is fixedly connected to an auxiliary bearing, and the two auxiliary bearings are internally rotatably connected to the same double-headed screw, and the two ends of the double-headed screw are symmetrically fixedly connected to gears, and the gears are meshed with the gear blocks. A moving block is sleeved on the outer side of the double-headed screw, and the top of the moving block is fixedly connected to a support block.

[0014] By adopting the above technical solution, the elastic force of the spring drives the vertical rod to press against the bottom surface of the bridge.

[0015] Preferably, the top end of the spring is fixedly connected to the baffle, the bottom end of the spring is fixedly connected to the limit frame, the tooth block is located between the fixed plate and the gear, the support rod is fixedly connected to the side block by a bolt, and the middle part of the double-headed screw is fixedly connected with a blocking block.

[0016] By adopting the above technical solution, when the bridge is loaded, the vertical rods on both sides will be driven down, the vertical rods will drive the gear blocks to move, the gear blocks will drive the gears to rotate, and then the two gears will drive the double-headed screw to rotate.

[0017] Preferably, the moving block is threadedly connected to the double-headed screw, the two moving blocks are located on both sides of the blocking block, the top of the supporting block is provided with a friction surface, and the supporting block abuts against the bottom of the detector body.

[0018] By adopting the above technical solution, the moving block is against the bottom of the detector body, the moving block and the gear will not rotate, and the double-headed screw rotates to drive the support blocks on both sides closer, and the support blocks support the detector body upward, thereby improving the stability and support strength of the detector body.

[0019] Preferably, the detector body is installed on one side of the fixed plate, and the adjustment assembly includes an upper sphere, which is located inside the annular spherical shell, the bottom of the upper sphere is fixedly connected to a lower rod, the bottom of the lower rod is fixedly connected to a counterweight ball, the bottom of the counterweight ball is fixedly connected to a connecting flange, the other side of the top of the base plate is fixedly connected to a hemispherical shell, the inside of the hemispherical shell is installed with a lower sphere, the top of the lower sphere is fixedly connected to a telescopic rod, one side of the lower rod is fixedly connected to a cross bar, and the cross bar is fixedly connected to the fixed plate.

[0020] By adopting the above technical solution, the gravity of the counterweight ball drives itself to swing, so that the counterweight ball and the upper sphere are in a vertical state. The counterweight ball drives the fixing plate and the detector body to be in a vertical state through the lower rod. By pressing the upper sphere without moving and then screwing in bolt one, the positioning stability of the upper sphere is improved.

[0021] Preferably, the internal thread of the connecting flange is connected with a fixing bolt, and the connecting flange is fixedly connected to the telescopic part of the telescopic rod through the fixing bolt, the lower sphere is rotatably connected to the hemispherical shell sleeve, and the interior of the annular spherical shell sleeve is symmetrically provided with a slide groove, and the internal thread of the annular spherical shell sleeve is connected with bolt 1, one end of the bolt 1 is rotatably connected to a clamping block, and the clamping block is slidably connected to the slide groove, and there are no less than four bolts 1, and the interior of the hemispherical shell sleeve is embedded and fixedly connected with a fixing cylinder, the fixing cylinder is arranged in an array, and an air hole is provided inside the fixing cylinder.

[0022] By adopting the above technical solution, multiple bolts are provided, thereby improving the positioning stability of the upper sphere.

[0023] Preferably, the internal thread of the fixed cylinder is connected to bolt 2, one end of the bolt 2 is fixedly connected to a piston, the piston fits against the inner wall of the air hole, the piston is slidingly connected to the air hole, and the other end of the bolt 2 is fixedly connected to a rotating block, which is located outside the fixed cylinder.

[0024] By adopting the above technical solution, the rotating block is screwed out, the rotating block drives the second bolt to be screwed out, the second bolt drives the piston to move, and the piston pumps air into the air hole, making the air hole negative pressure, which is convenient for fixing the position of the lower sphere.

[0025] A method for detecting the bearing capacity of a temporary steel trestle bridge for construction, using the following steps:

[0026] Step 1: Move the bottom plate to the bottom of the bridge and insert the pin into the bottom surface to fix it. At this time, the gravity of the counterweight ball drives itself to swing, so that the counterweight ball and the upper sphere are in a vertical state. The counterweight ball drives the fixing plate and the detector body to a vertical state through the lower rod. By pressing the upper sphere without moving, screw in the bolt 1. The bolt 1 drives the clamping block to move, so that the clamping block presses against the outer side of the upper sphere. The multiple bolts 1 provided improve the positioning stability of the upper sphere.

[0027] Step 2: Pull the telescopic rod, which drives the lower sphere to rotate inside the hemispherical shell, keeping the inclination angle of the telescopic rod the same as the connecting flange. Then, keep the telescopic rod stationary and screw out the turn block. The turn block drives the second bolt to be unscrewed, and the second bolt drives the piston to move. The piston pumps air into the air hole, making the air hole negative pressure, which is convenient for fixing the position of the lower sphere. Then pull the telescopic part of the telescopic rod to fit with the connecting flange, and then fix it with the fixing bolt. The vertical adjustment of the counterweight ball is completed, which is convenient for subsequent testing.

[0028] Step 3: Turn the one-way screw, the guide rod limits the sliding seat, and then drives the sliding seat to move upward. The sliding seat drives the detector body to move, so that the pressure needle of the detector body is against the bottom surface of the bridge. The elastic force of the spring drives the vertical rod to the bottom surface of the bridge. At this time, the bridge is unloaded, and the data of the detector body is recorded as the initial value. Then, add a weight on the top of the bridge or a vehicle passes through. When the bridge passes the load, it will drive the pressure needle to move up and down inside the detector body. The data of the detector body is recorded again, which is convenient for the subsequent calculation of the deflection value and then the bearing capacity.

[0029] Step 4: When the bridge passes through the load, it will drive the vertical rods on both sides to descend. The vertical rods compress the springs through the baffles, and the limit frames limit the vertical rods. The vertical rods drive the gear blocks to move, and the gear blocks drive the gears to rotate. The two gears drive the double-headed screw to rotate. The moving block rests on the bottom of the detector body, and the moving block and the gears will not rotate. The rotation of the double-headed screw drives the support blocks on both sides to move closer, and the support blocks support the detector body upward.

[0030] Compared with the prior art, the present invention is provided with a support assembly. By adjusting the counterweight ball and the lower rod to a vertical state through the adjustment assembly, the fixed plate and the detector body are in a vertical state. When the bridge passes through the load, the moving block will support the detector body upward, thereby improving the stability and support strength of the detector body, reducing the vibration displacement of the detector body during detection, and improving the movement accuracy of the pressure needle, so that the detection result of the detector body is more accurate. The specific beneficial effects are described as follows:

[0031] 1. A support assembly is provided. The counterweight ball and the lower rod are adjusted to a vertical state through the adjustment assembly, so that the fixed plate and the detector body are in a vertical state, which is convenient for subsequent detection. The one-way screw is rotated, and the guide rod limits the sliding seat, thereby driving the sliding seat to move upward. The sliding seat drives the detector body to move, so that the pressure needle of the detector body is against the bottom surface of the bridge. The elastic force of the spring drives the vertical rod to the bottom surface of the bridge. At this time, the bridge is unloaded, and the data of the detector body is recorded as the initial value. Then, a weight is added to the top of the bridge or a vehicle passes through. When the bridge passes the load, it will drive the pressure needle to move up and down inside the detector body. The data of the detector body is recorded again, which is convenient for the subsequent calculation of the deflection value and then the bearing capacity.

[0032] 2. When the bridge is loaded, it will drive the vertical rods on both sides to descend, and the vertical rods will compress the springs through the baffles, and the limit frames will limit the vertical rods. The vertical rods will drive the tooth blocks to move, and the tooth blocks will drive the gears to rotate. The two gears will drive the double-headed screw to rotate, and the moving block will be against the bottom of the detector body. The moving block and the gear will not rotate. The rotation of the double-headed screw will drive the support blocks on both sides to move closer, and the support blocks will support the detector body upward, thereby improving the stability and support strength of the detector body, reducing the vibration displacement of the detector body during detection, and improving the movement accuracy of the pressure needle, so that the detection results of the detector body are more accurate, solving the problem that the detector is not fixed in position during detection, and the bridge deck will vibrate during bridge load detection, which may cause the detector itself to vibrate, affecting the accuracy of the pressure needle detection structure;

[0033] 3. An adjustment component is provided. By moving the bottom plate to the bottom position of the bridge and inserting the pin into the bottom surface to fix it, the gravity of the counterweight ball drives itself to swing, so that the counterweight ball and the upper sphere are in a vertical state. The counterweight ball drives the fixing plate and the detector body in a vertical state through the lower rod. By pressing the upper sphere without moving, and then screwing in bolt one, bolt one drives the clamping block to move, so that the clamping block is pressed against the outer side of the upper sphere. The multiple bolts one provided improve the positioning stability of the upper sphere. Then pull the telescopic rod, and the telescopic rod drives the lower sphere to rotate inside the hemispherical shell, keeping the inclination angle of the telescopic rod the same as the connecting flange. Then keep the telescopic rod stationary, unscrew the rotating block outward, and the rotating block drives the bolt two to unscrew. The bolt two drives the piston to move. The piston pumps air into the inside of the air hole, so that the air hole is negative pressure, which is convenient for fixing the position of the lower sphere. Then pull the telescopic part of the telescopic rod to fit the connecting flange, and then fix it with the fixing bolt to complete the vertical fixation of the counterweight ball, which is convenient for the subsequent smooth detection and use of the detector body. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the first three-dimensional overall structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the second three-dimensional overall structure of the present invention;

[0036] Figure 3 This is a schematic cross-sectional view of the fixing plate of the present invention;

[0037] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0038] Figure 5 This is a schematic diagram of the vertical rod installation structure of the present invention;

[0039] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0040] Figure 7 For the present invention Figure 5 The enlarged structural diagram at C in the middle;

[0041] Figure 8 This is a schematic diagram of the support block installation structure of the present invention;

[0042] Figure 9 This is a schematic diagram of the upper sphere installation structure of the present invention;

[0043] Figure 10 For the present invention Figure 9 The enlarged structural diagram at D in the middle;

[0044] Figure 11 For the present invention Figure 9Enlarged structural diagram at E in the middle.

[0045] In the figure: 1, bottom plate; 2, support leg; 3, latch; 4, inclined rod; 5, support assembly; 51, connecting plate; 52, one-way screw; 53, guide rod; 54, sliding seat; 55, fixed block; 56, limit frame; 57, vertical rod; 58, baffle; 59, spring; 510, gear block; 511, side block; 512, support rod; 513, auxiliary bearing; 514, double-ended screw; 515, gear; 516, moving block; 517, support block; 6, adjustment Joint assembly; 61, upper sphere; 62, lower rod; 63, cross bar; 64, counterweight ball; 65, connecting flange; 66, fixing bolt; 67, hemispherical shell; 68, lower sphere; 69, telescopic rod; 610, slide; 611, bolt 1; 612, pressing block; 613, fixing cylinder; 614, air hole; 615, bolt 2; 616, piston; 617, rotating block; 7, fixing plate; 8, detector body; 9, pillar; 10, annular spherical shell. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] See also Figures 1-11 The present invention provides a technical solution: a bearing capacity detection device for a temporary steel trestle for construction, comprising a base plate 1, a detector body 8 and support legs 2 fixedly installed around the bottom of the base plate 1, and a pin 3 is inserted into one side of the support leg 2 through a mounting plate.

[0048] The top side of the base plate 1 is fixedly connected to an inclined rod 4, one side of the inclined rod 4 is installed with a fixed plate 7, the bottom of the inclined rod 4 is fixedly connected to a support 9, the top of the inclined rod 4 is fixedly connected to an annular spherical shell sleeve 10, and the detector body 8 is installed on one side of the fixed plate 7.

[0049] A support assembly 5 is provided on one side of the fixed plate 7, and the support assembly 5 includes a connecting plate 51 symmetrically arranged in the upper and lower parts. A one-way screw rod 52 is fixedly connected to one side of the inner part of the connecting plate 51, and a guide rod 53 is rotatably connected to the other side of the inner part of the connecting plate 51. The outer side of the one-way screw rod 52 is threadedly connected to a sliding seat 54. The detector body 8 is fixedly installed on the sliding seat 54. A fixed block 55 is symmetrically fixedly connected to the middle part of one side of the fixed plate 7, and the fixed block 55 is fixedly connected to a limiting frame 56 on the side away from the fixed plate 7.

[0050] The inner side of the limit frame 56 is slidably connected to a vertical rod 57, and a spring 59 is sleeved on the outer side of the vertical rod 57. The spring 59 is located above the limit frame 56. The lower outer side of the vertical rod 57 is fixedly connected to a gear block 510. The lower outer side of the detector body 8 is symmetrically fixedly connected to a side block 511, and the bottom of the side block 511 is fixedly connected to a support rod 512.

[0051] The sliding seat 54 is slidably connected to the guide rod 53, a baffle 58 is fixedly connected to the upper outer side of the vertical rod 57, a spring 59 is slidably connected to the vertical rod 57, the top end of the spring 59 is fixedly connected to the baffle 58, and the bottom end of the spring 59 is fixedly connected to the limit frame 56.

[0052] The bottom end of the support rod 512 is fixedly connected to an auxiliary bearing 513, and the two auxiliary bearings 513 are internally rotatably connected to the same double-headed screw rod 514. The two ends of the double-headed screw rod 514 are symmetrically fixedly connected to gears 515, and the gears 515 are meshed with the gear block 510. The outer side of the double-headed screw rod 514 is sleeved with a moving block 516, and the top of the moving block 516 is fixedly connected to a support block 517.

[0053] The tooth block 510 is located between the fixed plate 7 and the gear 515 , the support rod 512 is fixedly connected to the side block 511 by bolts, and a blocking block is fixedly connected to the middle of the double-headed screw rod 514 .

[0054] The moving block 516 is threadedly connected to the double-headed screw rod 514. The two moving blocks 516 are located on both sides of the blocking block. The top of the supporting block 517 is provided with a friction surface, and the supporting block 517 abuts against the bottom of the detector body 8.

[0055] Example 1: Figure 1-Figure 2 and Figure 4-Figure 8 As shown, a support component 5 is provided, and the counterweight ball 64 and the lower rod 62 are adjusted to a vertical state through the adjustment component 6, so that the fixed plate 7 and the detector body 8 are in a vertical state, which is convenient for subsequent detection. The one-way screw 52 is rotated, and the guide rod 53 limits the sliding seat 54, thereby driving the sliding seat 54 to move upward, and the sliding seat 54 drives the detector body 8 to move, so that the pressure needle of the detector body 8 is against the bottom surface of the bridge, and the elastic force of the spring 59 drives the vertical rod 57 to be against the bottom surface of the bridge. At this time, the bridge is unloaded, and the data of the detector body 8 is recorded as the initial value.

[0056] Then, a weight is added to the top of the bridge or a vehicle passes through. When the bridge passes through the load, it will drive the pressure needle to move up and down inside the detector body 8, and record the data of the detector body 8 again, which is convenient for the subsequent calculation of the deflection value, and then the bearing capacity is obtained. When the bridge passes through the load, it will drive the vertical rods 57 on both sides to descend, and the vertical rod 57 compresses the spring 59 through the baffle 58. The limit frame 56 limits the vertical rod 57. The vertical rod 57 drives the gear block 510 to move, and the gear block 510 drives the gear 515 to rotate. The two gears 515 drive the double-headed screw 514 to rotate, and the moving block 516 is against the bottom of the detector body 8. The moving block 516 and the gear 515 will not rotate.

[0057] The rotation of the double-headed screw 514 drives the support blocks 517 on both sides to move closer, and the support blocks 517 support the detector body 8 upward, thereby improving the stability and support strength of the detector body 8, reducing the vibration displacement of the detector body 8 during detection, and improving the movement accuracy of the pressure needle, so that the detection results of the detector body 8 are more accurate, and solves the problem that the detector is not fixed in position during detection, and the bridge deck will vibrate during bridge load detection, which may cause the detector itself to vibrate, affecting the accuracy of the pressure needle detection structure.

[0058] An adjustment component 6 is provided on the other side of the fixed plate 7, and the adjustment component 6 includes an upper sphere 61, which is located inside the annular spherical shell sleeve 10, and the bottom of the upper sphere 61 is fixedly connected to the lower rod 62, and the bottom of the lower rod 62 is fixedly connected to the counterweight ball 64, and the bottom of the counterweight ball 64 is fixedly connected to the connecting flange 65. The other side of the top of the base plate 1 is fixedly connected to a hemispherical shell sleeve 67, and the interior of the hemispherical shell sleeve 67 is installed with a lower sphere 68, and the top of the lower sphere 68 is fixedly connected to a telescopic rod 69.

[0059] One side of the lower rod 62 is fixedly connected to a cross bar 63, and the cross bar 63 is fixedly connected to the fixed plate 7. The internal thread of the connecting flange 65 is connected to a fixing bolt 66, and the connecting flange 65 is fixedly connected to the telescopic part of the telescopic rod 69 through the fixing bolt 66. The lower sphere 68 is rotatably connected to the hemispherical shell 67, and the interior of the annular spherical shell 10 is symmetrically provided with a slide groove 610, and the internal thread of the annular spherical shell 10 is connected to a bolt 611.

[0060] One end of bolt 1 611 is rotatably connected to a clamping block 612, and the clamping block 612 is slidably connected to the slide groove 610. There are no less than four bolts 1 611, and a fixing cylinder 613 is embedded and fixedly connected inside the hemispherical shell 67. The fixing cylinder 613 is arranged in an array, and an air hole 614 is opened inside the fixing cylinder 613.

[0061] The internal thread of the fixed cylinder 613 is connected to the bolt 2 615, one end of the bolt 2 615 is fixedly connected to the piston 616, the piston 616 fits against the inner wall of the air hole 614, the piston 616 is slidably connected to the air hole 614, and the other end of the bolt 2 615 is fixedly connected to the rotating block 617, which is located outside the fixed cylinder 613.

[0062] Example 2: Figure 3 and Figures 9-11 As shown, an adjustment component 6 is provided. By moving the base plate 1 to the bottom position of the bridge and inserting the pin 3 into the bottom surface to fix it, the gravity of the counterweight ball 64 drives itself to swing, so that the counterweight ball 64 and the upper sphere 61 are in a vertical state. The counterweight ball 64 drives the fixing plate 7 and the detector body 8 to be in a vertical state through the lower rod 62. By pressing the upper sphere 61 without moving and then tightening the bolt 611, the bolt 611 drives the clamping block 612 to move, so that the clamping block 612 is pressed against the outer side of the upper sphere 61. The multiple bolts 611 are set to improve the positioning stability of the upper sphere 61.

[0063] Then pull the telescopic rod 69, which drives the lower sphere 68 to rotate inside the hemispherical shell 67, keeping the inclination angle of the telescopic rod 69 the same as that of the connecting flange 65. Then keep the telescopic rod 69 stationary, screw out the turning block 617, and the turning block 617 drives the second bolt 615 to unscrew. The second bolt 615 drives the piston 616 to move. The piston 616 evacuates the inside of the air hole 614, making the air hole 614 negative pressure, which is convenient for fixing the position of the lower sphere 68. Then pull the telescopic part of the telescopic rod 69 to fit with the connecting flange 65, and then fix it with the fixing bolt 66, completing the vertical adjustment and fixation of the counterweight ball 64, which is convenient for the smooth detection and use of the subsequent detector main body 8.

[0064] Working principle: When using this device, first, Figures 1-11 As shown, by moving the base plate 1 to the bottom position of the bridge and inserting the pin 3 into the bottom surface to fix it, the gravity of the counterweight ball 64 drives itself to swing, so that the counterweight ball 64 and the upper sphere 61 are in a vertical state, and the counterweight ball 64 drives the fixing plate 7 and the detector body 8 to be in a vertical state through the lower rod 62. By pressing the upper sphere 61 without moving and then tightening the bolt 611, the bolt 611 drives the clamping block 612 to move, so that the clamping block 612 is pressed against the outer side of the upper sphere 61. The multiple bolts 611 set improve the positioning stability of the upper sphere 61.

[0065] Then pull the telescopic rod 69, which drives the lower sphere 68 to rotate inside the hemispherical shell 67, keeping the inclination angle of the telescopic rod 69 the same as that of the connecting flange 65. Then keep the telescopic rod 69 stationary, screw out the turning block 617, and the turning block 617 drives the second bolt 615 to unscrew. The second bolt 615 drives the piston 616 to move. The piston 616 evacuates the inside of the air hole 614, making the air hole 614 negative pressure, which is convenient for fixing the position of the lower sphere 68. Then pull the telescopic part of the telescopic rod 69 to fit with the connecting flange 65, and then fix it with the fixing bolt 66, completing the vertical adjustment and fixation of the counterweight ball 64, which is convenient for subsequent detection.

[0066] By rotating the one-way screw 52, ​​the guide rod 53 limits the sliding seat 54, thereby driving the sliding seat 54 to move upward, and the sliding seat 54 drives the detector body 8 to move, so that the pressure needle of the detector body 8 is against the bottom surface of the bridge, and the elastic force of the spring 59 drives the vertical rod 57 to the bottom surface of the bridge. At this time, the bridge is unloaded, and the data of the detector body 8 is recorded as the initial value. Then, a weight is added to the top of the bridge or a vehicle passes through. When the bridge passes through the load, it will drive the pressure needle to move up and down inside the detector body 8, and the data of the detector body 8 is recorded again, which is convenient for the subsequent calculation of the deflection value and then the bearing capacity.

[0067] When the bridge passes through the load, it will drive the vertical rods 57 on both sides to descend. The vertical rods 57 compress the springs 59 through the baffles 58, and the limit frame 56 limits the vertical rods 57. The vertical rods 57 drive the gear block 510 to move, and the gear block 510 drives the gear 515 to rotate. The two gears 515 drive the double-headed screw 514 to rotate, and the moving block 516 rests on the bottom of the detector body 8. The moving block 516 and the gear 515 will not rotate. The rotation of the double-headed screw 514 drives the support blocks 517 on both sides to approach, and the support blocks 517 support the detector body 8 upward.

[0068] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0069] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bearing capacity detection device for a temporary steel trestle for construction, comprising a base plate (1), a detector body (8), and support legs (2) fixedly mounted around the bottom of the base plate (1), wherein one side of the support legs (2) is connected to a latch (3) via a mounting plate; It is characterized by: Also includes: A top side of the bottom plate (1) is fixedly connected to an inclined rod (4), a fixing plate (7) is installed on one side of the inclined rod (4), a bottom of the inclined rod (4) is fixedly connected to a support (9), and a top end of the inclined rod (4) is fixedly connected to an annular spherical shell (10); A support assembly (5) is provided on one side of the fixing plate (7), and an adjustment assembly (6) is provided on the other side of the fixing plate (7); The support assembly (5) comprises a connecting plate (51) symmetrically arranged in an upper and lower direction, a one-way screw rod (52) being fixedly connected to one side of the connecting plate (51), a guide rod (53) being rotatably connected to the other side of the connecting plate (51), a sliding seat (54) being threadedly connected to the outer side of the one-way screw rod (52), a fixing block (55) being symmetrically fixedly connected to the middle part of one side of the fixing plate (7), and a limiting frame (56) being fixedly connected to the side of the fixing block (55) away from the fixing plate (7).

2. The bearing capacity detection device for a temporary steel trestle for construction according to claim 1 is characterized in that: The detector body (8) is fixedly mounted on the sliding seat (54); the interior of the limit frame (56) is slidably connected to a vertical rod (57); the upper outer side of the vertical rod (57) is fixedly connected to a blocking piece (58); the outer side of the vertical rod (57) is sleeved with a spring (59); the spring (59) is located above the limit frame (56); the spring (59) is slidably connected to the vertical rod (57); the lower outer side of the vertical rod (57) is fixedly connected to a tooth block (510); the lower outer side of the detector body (8) is symmetrically fixedly connected to a side block (511); the bottom of the side block (511) is fixedly connected to a support rod (512); the sliding seat (54) is slidably connected to the guide rod (53).

3. The bearing capacity detection device for a temporary steel trestle for construction according to claim 2, characterized in that: The bottom end of the support rod (512) is fixedly connected to an auxiliary bearing (513), and the two auxiliary bearings (513) are internally rotatably connected to the same double-headed screw rod (514). The two ends of the double-headed screw rod (514) are symmetrically fixedly connected to gears (515), and the gears (515) are meshed with the gear block (510). The outer side of the double-headed screw rod (514) is sleeved with a moving block (516), and the top of the moving block (516) is fixedly connected to a support block (517).

4. The bearing capacity detection device for a temporary steel trestle for construction according to claim 3 is characterized in that: The top end of the spring (59) is fixedly connected to the baffle (58), the bottom end of the spring (59) is fixedly connected to the limit frame (56), the tooth block (510) is located between the fixed plate (7) and the gear (515), the support rod (512) is fixedly connected to the side block (511) through a bolt, and the middle part of the double-headed screw rod (514) is fixedly connected to a blocking block.

5. The bearing capacity detection device for a temporary steel trestle for construction according to claim 4 is characterized in that: The moving block (516) is threadedly connected to the double-headed screw (514), and the two moving blocks (516) are located on both sides of the blocking block. The top of the supporting block (517) is provided with a friction surface, and the supporting block (517) is in contact with the bottom of the detector body (8).

6. The bearing capacity detection device for a temporary steel trestle for construction according to claim 5, characterized in that: The detector body (8) is mounted on one side of the fixed plate (7); the adjustment assembly (6) comprises an upper sphere (61); the upper sphere (61) is located inside the annular spherical shell (10); the bottom of the upper sphere (61) is fixedly connected to a lower rod (62); the bottom of the lower rod (62) is fixedly connected to a counterweight ball (64); the bottom of the counterweight ball (64) is fixedly connected to a connecting flange (65); the other side of the top of the bottom plate (1) is fixedly connected to a hemispherical shell (67); the interior of the hemispherical shell (67) is mounted with a lower sphere (68); the top of the lower sphere (68) is fixedly connected to a telescopic rod (69); one side of the lower rod (62) is fixedly connected to a cross bar (63); the cross bar (63) is fixedly connected to the fixed plate (7).

7. The bearing capacity detection device for a temporary steel trestle for construction according to claim 6, characterized in that: The internal thread of the connecting flange (65) is connected with a fixing bolt (66), and the connecting flange (65) is fixedly connected to the telescopic part of the telescopic rod (69) through the fixing bolt (66). The lower sphere (68) is rotatably connected to the hemispherical shell (67). The interior of the annular spherical shell (10) is symmetrically provided with a slide groove (610). The internal thread of the annular spherical shell (10) is connected with a bolt 1 (611). One end of the bolt 1 (611) is rotatably connected with a clamping block (612). The clamping block (612) is slidably connected to the slide groove (610). There are no less than four bolts 1 (611). The interior of the hemispherical shell (67) is embedded with a fixing cylinder (613) fixedly connected. The fixing cylinder (613) is arranged in an array, and an air hole (614) is provided inside the fixing cylinder (613).

8. The bearing capacity detection device for a temporary steel trestle for construction according to claim 7, characterized in that: The internal thread of the fixed cylinder (613) is connected to a second bolt (615), one end of the second bolt (615) is fixedly connected to a piston (616), the piston (616) is in contact with the inner wall of the air hole (614), the piston (616) is slidably connected to the air hole (614), and the other end of the second bolt (615) is fixedly connected to a rotating block (617), and the rotating block (617) is located outside the fixed cylinder (613).

9. A method for detecting the bearing capacity of a temporary steel trestle for construction, characterized in that: The method for using the bearing capacity detection device for a temporary steel trestle bridge for construction as claimed in claim 8 is as follows: Step 1: Move the bottom plate (1) to the bottom of the bridge, insert the latch (3) into the bottom surface to fix it, the counterweight ball (64) and the upper sphere (61) are in a vertical state, the counterweight ball (64) drives the fixing plate (7) and the detector body (8) to be in a vertical state through the lower rod (62), and by pressing the upper sphere (61) to be stationary, screw in the bolt 1 (611) so that the pressing block (612) is pressed against the outer side of the upper sphere (61); Step 2: Pull the telescopic rod (69), the telescopic rod (69) drives the lower sphere (68) to rotate inside the hemispherical shell (67), keep the inclination angle of the telescopic rod (69) the same as the connecting flange (65), then keep the telescopic rod (69) stationary, screw out the rotating block (617), the rotating block (617) drives the second bolt (615) to be screwed out, the second bolt (615) drives the piston (616) to move, the piston (616) pumps air into the air hole (614), so that the air hole (614) is negative pressure, and then pull the telescopic part of the telescopic rod (69) to fit with the connecting flange (65), fix it with the fixing bolt (66), and complete the vertical adjustment of the counterweight ball (64); Step 3: Rotate the one-way screw (52), the guide rod (53) limits the sliding seat (54), and then drives the sliding seat (54) to move upward, and the sliding seat (54) drives the detector body (8) to move, so that the pressure needle of the detector body (8) is against the bottom surface of the bridge, and the elastic force of the spring (59) drives the vertical rod (57) to be against the bottom surface of the bridge. At this time, the bridge is unloaded, and the data of the detector body (8) is recorded as the initial value. Then, a weight is added to the top of the bridge or a vehicle passes through. When the bridge passes the load, it will drive the pressure needle to move up and down inside the detector body (8), and the data of the detector body (8) is recorded again, which is convenient for subsequent calculation of the deflection value and thus the bearing capacity; Step 4: When the bridge passes through the load, the vertical rods (57) on both sides will be driven to descend, the vertical rods (57) will compress the springs (59) through the baffles (58), and the vertical rods (57) will drive the tooth block (510) to move, the tooth block (510) will drive the gear (515) to rotate, the two gears (515) will drive the double-headed screw (514) to rotate, the moving block (516) will be against the bottom of the detector body (8), the moving block (516) and the gear (515) will not rotate, the double-headed screw (514) will rotate and drive the support blocks (517) on both sides to approach, and the support blocks (517) will support the detector body (8) upward.

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