Single-pile vertical anti-pulling static load test equipment

Abstract

The invention belongs to the technical field of single-pile vertical anti-pulling static load tests, particularly relates to single-pile vertical anti-pulling static load test equipment, and aims to solve the problem that test accuracy is affected due to the fact that existing test equipment is inconvenient to quickly assemble and poor in single-pile positioning effect in the use process. First sliding grooves are formed in the two sides of the sliding plates and the two sides of the mounting plate correspondingly, the two sliding plates are slidably mounted in the two first sliding grooves correspondingly, supporting plates are fixedly mounted at the bottoms of the two sliding plates correspondingly, second sliding grooves are formed in the bottoms of the two supporting plates correspondingly, and connecting plates are slidably mounted in the two second sliding grooves correspondingly. The bottoms of the two connecting plates are each rotationally provided with two universal wheels, and the four universal wheels are used for moving equipment. In the using process, rapid assembly is facilitated, the positioning effect on a single pile is improved, then the test accuracy can be effectively guaranteed, the structure is simple, and use is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of single pile vertical uplift static load test, in particular to a single pile vertical uplift static load test equipment. BACKGROUND

[0002] Single pile vertical static load test refers to transmitting vertical load to the building pile, obtaining the Q-s curve and s-lg t auxiliary curve of static load test by measuring the pile top settlement of single pile under different loads, and then calculating the characteristic value of single pile vertical compression bearing capacity and other parameters according to the curve. Most static load tests are to provide basis for engineering acceptance. Most static load tests to provide basis for engineering acceptance can determine the maximum load according to the design requirements, and do not conduct destructive tests, i.e. terminate loading after loading to the predetermined maximum test load. Single pile is mostly inspected for vertical uplift bearing capacity by reaction device or load and uplift test device during construction.

[0003] The patent document with publication number CN220550608U discloses a single pile vertical uplift static load test equipment, which comprises a mounting plate, two support columns fixedly installed on the bottom of the mounting plate, a bottom plate fixedly installed at the bottom of the support column, two moving wheels arranged at the bottom of the bottom plate, and a gas cylinder fixedly installed at the top of the mounting plate. The limiting plate is used to limit the single pile body, improve the stability of the single pile body during detection, and the first side plate, the second side plate, the screw and the nut are cooperated to quickly install the limiting plate, so that the limiting plate quickly limits the single pile body, improves the installation and limiting efficiency of the single pile body, improves the detection efficiency of the single pile body, and solves the problem that the existing single pile uplift bearing capacity detection is generally fixed by a hoop, but a large number of bolts and nuts need to be rotated for installation, which is low in installation efficiency.

[0004] However, the above-mentioned patent document is not convenient for quick assembly during use, and the positioning effect of the single pile is poor, which affects the accuracy of the test. Therefore, we propose a single pile vertical uplift static load test equipment to solve the above-mentioned problems. SUMMARY

[0005] The purpose of the present application is to solve the problem of the prior art that the test equipment is not convenient for quick assembly during use, and the positioning effect of the single pile is poor, which affects the accuracy of the test. Therefore, we propose a single pile vertical uplift static load test equipment.

[0006] The single pile vertical uplift static load test equipment provided by the present application adopts the following technical scheme:

[0007] A single pile vertical uplift static load test equipment comprises:

[0008] Mounting plate

[0009] The two sides of the mounting plate are provided with first sliding grooves, and two sliding plates are slidingly installed in the two first sliding grooves respectively, the bottoms of the two sliding plates are fixedly provided with support plates, the bottoms of the two support plates are provided with second sliding grooves, and two connecting plates are slidingly installed in the two second sliding grooves respectively, the bottoms of the two connecting plates are rotatably provided with two universal wheels, and the four universal wheels are used for moving the equipment.

[0010] The top of the mounting plate is provided with four first sliding holes, two first supporting rods and two second supporting rods are slidingly installed in the four first sliding holes respectively, one end of the two first supporting rods and the two second supporting rods is fixedly connected with the bottom of the top plate, four second sliding holes are formed in the top plate, third supporting rods are slidingly installed in the four second sliding holes respectively, one end of the four third supporting rods is fixedly connected with the same fixing plate, the bottom of the fixing plate is fixedly connected with a pressure sensor, the other end of the four third supporting rods is fixedly connected with the top of the mounting plate, a hydraulic cylinder is fixedly installed on the top of the mounting plate, an output shaft of the hydraulic cylinder is fixedly connected with an extension rod, one end of the extension rod is fixedly connected with the bottom of the top plate, and the hydraulic cylinder is used for driving the extension rod and the top plate to move.

[0011] The extension mechanism is arranged in the first through groove, the horizontal adjusting mechanism and the lifting mechanism are arranged on the two support plates, the bottom of the top plate is fixedly connected with a scale, the mounting plate is provided with a mounting hole, and the scale is slidingly installed in the mounting hole; and the scale is used for measuring the vertical displacement distance of the single pile.

[0012] The single pile positioning mechanism is arranged on the two rectangular columns, the single pile positioning mechanism is connected with a steel bar positioning mechanism, and the steel bar positioning mechanism is used for positioning the steel bars on the single pile.

[0013] The lifting mechanism comprises two first motors, the two first motors are fixedly installed at the top of the two sliding plates, first through holes are formed in the top inner walls of the two second sliding grooves, second screws are rotatably installed in the two first through holes, the two second screws are in threaded connection with the two connecting plates respectively, the other ends of the two second screws are fixedly connected with the output shafts of the two first motors respectively, the first motor is used for driving the second screw and the connecting plate to move, when the first motor is turned on, the first motor drives the second screw to rotate, and the second screw drives the connecting plate to move vertically.

[0014] The single pile positioning mechanism comprises a ring-shaped plate fixedly connected with the bottoms of two rectangular columns, two fifth sliding grooves are formed in the inner wall of the ring-shaped plate, first guide blocks are slidingly installed in the two fifth sliding grooves, positioning inclined plates are fixedly connected with the outer sides of the two first guide blocks, the two positioning inclined plates are matched with the first inclined slot, first springs are fixedly connected with the outer sides of the two first guide blocks, one end of each of the two first springs is fixedly connected with the inner wall of each of the two fifth sliding grooves, the two positioning inclined plates are matched with the first inclined slot for positioning the single pile, when the two positioning inclined plates are vertically moved to a certain position, the first inclined slot extrudes the two positioning inclined plates, and then the two positioning inclined plates can clamp and position the single pile.

[0015] Second through grooves are formed in the inner walls on both sides of the first through groove, third through holes are formed in the bottom inner walls of the two second through grooves, third screws are rotatably installed in the two third through holes, the second motor is fixedly installed at the bottom of the mounting plate, the output shaft of the second motor is fixedly connected with the other end of the rotating shaft, the second motor is used to drive the rotating shaft to rotate, when the third screws rotate, the third screws drive the rectangular columns to vertically move.

[0016] The reinforcing bar positioning mechanism comprises two connecting rods fixedly installed at the top of the two positioning inclined plates, a first circular plate slidingly installed on the outer sides of the two connecting rods, two second connecting rods fixedly connected with the top of the first circular plate, a plurality of second inclined slots formed in the first circular plate, a second circular plate fixedly connected with one end of the two connecting rods, and a plurality of placing holes formed in the second circular plate. The first circular plate and the second circular plate are matched to position the reinforcing bars on the single pile.

[0017] Two sixth sliding grooves are formed in the inner walls of the plurality of placing holes, second guide blocks are slidingly installed in the two sixth sliding grooves, positioning inclined blocks are fixedly connected with the outer sides of the two second guide blocks, the two positioning inclined blocks are matched with the second inclined slots, second springs are fixedly connected with the outer sides of the two positioning inclined blocks, one end of each of the two second springs is fixedly connected with the inner wall of each of the two sixth sliding grooves, arc-shaped grooves are formed in the two positioning inclined blocks and the two positioning inclined plates, and the two positioning inclined blocks are matched with the second inclined slots for positioning the reinforcing bars on the single pile. When the two positioning inclined blocks are vertically moved to a certain position, the second inclined slots extrude the two positioning inclined blocks, and then the two positioning inclined blocks can position the reinforcing bars.

[0018] First sprockets are fixedly installed on the outer side of the rotating shaft and one end of the third screw, one first chain is meshed on the two first sprockets, second sprockets are fixedly installed on the outer side of the rotating shaft and one end of the other third screw, one second chain is meshed on the two second sprockets, and the two third screws are used to drive the two rectangular columns to vertically move. When the rotating shaft rotates, the two first sprockets are driven by the first chain, and the two second sprockets are driven by the second chain.

[0019] The expansion mechanism comprises a bidirectional screw rod, second through holes are formed in the inner walls on both sides of the first through slot, the bidirectional screw rod is rotatably installed in the two second through holes, the bidirectional screw rod is threadedly connected with the two sliding plates, a small bevel gear is fixedly connected to the outer side of the bidirectional screw rod, the small bevel gear is engaged with a large bevel gear, a rotating shaft is rotatably installed on the bottom inner wall of the first through slot, one end of the rotating shaft is fixedly connected with the large bevel gear, the small bevel gear is used to drive the bidirectional screw rod and the two sliding plates to move, when the large bevel gear rotates, the small bevel gear can drive the bidirectional screw rod to rotate, and the bidirectional screw rod can drive the two sliding plates to move horizontally.

[0020] One end of the two first supporting rods is fixedly connected with the same positioning plate, a first inclined slot is formed in the positioning plate, two connecting blocks are fixedly installed at the bottom of the positioning plate, two hoops are fixedly connected to the two connecting blocks, a plurality of fastening bolts are connected to the two hoops, a nut is threadedly connected to each of the plurality of fastening bolts, and the plurality of fastening bolts are used to positionally connect the two hoops.

[0021] The horizontal adjusting mechanism comprises four rectangular plates, the four rectangular plates are fixedly installed on one side of the two supporting plates, a first screw rod is threadedly installed on each of the four rectangular plates, a hand wheel is fixedly connected to one end of each of the four first screw rods, a bearing is fixedly installed on the outer side of each of the four first screw rods, a supporting leg is fixedly connected to the outer side of each of the four bearings, a guide rod is slidingly installed on each of the four rectangular plates, and one end of each of the four guide rods is fixedly connected to the top of each of the four supporting legs.

[0022] To sum up, the present application has at least one of the following beneficial technical effects:

[0023] 1. By starting the second motor, the rotating shaft drives the large bevel gear to rotate, the large bevel gear drives the small bevel gear to rotate, and the bidirectional screw rod drives the two sliding plates to move horizontally, thereby increasing the supporting area of the mounting plate and improving its stability. At the same time, by rotating the hand wheel, the first screw rod drives the bearing and the supporting leg to move vertically, thereby adjusting the level of the mounting plate and ensuring the accuracy of the test results.

[0024] 2. By arranging the hoops and the plurality of fastening bolts, the single pile can be fixedly connected. At the same time, by arranging the two positioning inclined plates and the first inclined slot, when the two positioning inclined plates move vertically downward to a certain position, the first inclined slot extrudes the two positioning inclined plates to move closer to each other, thereby clamping and positioning the single pile to improve the positioning effect.

[0025] 3. This scheme uses two positioning inclined blocks in conjunction with a second inclined groove. When the two positioning inclined blocks move vertically downward to a certain position, the second inclined groove squeezes the two positioning inclined blocks closer to each other. In this way, the two positioning inclined blocks can clamp and position the steel bars on the single pile, thereby improving the positioning effect and ensuring the success rate of the test.

[0026] This invention facilitates rapid assembly during use and improves the positioning effect of single piles, thereby effectively ensuring the accuracy of the test. It has a simple structure and is easy to use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the main view of a single pile vertical pull-out static load test device proposed in this invention;

[0028] Figure 2 This is a three-dimensional structural diagram of the top plate of a single-pile vertical pull-out static load testing device proposed in this invention;

[0029] Figure 3 This is a schematic diagram of the structure of the first inclined block and the first inclined groove of the single pile vertical pull-out static load test device proposed in this invention;

[0030] Figure 4 This is a top view of the first circular plate of the single pile vertical pull-out static load test device proposed in this invention;

[0031] Figure 5 This invention proposes a single-pile vertical pull-out static load testing device. Figure 1 Enlarged structural diagram of part A in the middle;

[0032] Figure 6 This invention proposes a single-pile vertical pull-out static load testing device. Figure 1 Enlarged structural diagram of section B;

[0033] Figure 7 This invention proposes a single-pile vertical pull-out static load testing device. Figure 1 An enlarged structural diagram of section C.

[0034] Label: 1, mounting plate; 2, first sliding groove; 3, sliding plate; 4, support plate; 5, second sliding groove; 6, connecting plate; 7, universal wheel; 8, hydraulic cylinder; 9, telescopic rod; 10, top plate; 11, first support rod; 12, second support rod; 13, positioning plate; 14, first inclined groove; 15, connecting block; 16, hoop; 17, fastening bolt; 18, nut; 19, first motor; 20, second screw; 21, rectangular plate; 22, first screw; 23, hand wheel; 24, bearing; 25, support leg; 26, guide rod; 27, fixed column; 28, fourth sliding groove; 29, rectangular column; 30, annular plate; 31, fifth sliding groove; 32, first spring; 33, first guide block; 34, positioning inclined plate; 35, first through groove; 36, second through groove; 37, second motor; 38, rotating shaft; 39, large bevel gear; 40, small bevel gear; 41, bidirectional screw; 42, first sprocket; 43, first chain; 44, second sprocket; 45, second chain; 46, third screw; 47, first circular plate; 48, second inclined groove; 49, connecting rod; 50, second circular plate; 51, placing hole; 52, sixth sliding groove; 53, second spring; 54, second guide block; 55, positioning inclined block; 56, arc-shaped groove; 57, scale; 58, third support rod; 59, fixed plate; 60, pressure sensor. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0036] Embodiment one

[0037] Reference Figures 1-7 A single-pile vertical uplift static load test device, comprising:

[0038] The mounting plate 1;

[0039] The sliding plate 3, the first sliding groove 2 is formed on both sides of the mounting plate 1, and the two sliding plates 3 are slidingly installed in the two first sliding grooves 2, respectively. The bottom of each of the two sliding plates 3 is fixedly installed with a support plate 4, and the bottom of each of the two support plates 4 is provided with a second sliding groove 5. The connecting plate 6 is slidingly installed in each of the two second sliding grooves 5, and the bottom of each of the two connecting plates 6 is rotatably installed with two universal wheels 7. The four universal wheels 7 are used to move the device;

[0040] The top plate 10 is provided with four first sliding holes in the top of the mounting plate 1, two first supporting rods 11 and two second supporting rods 12 are slidably installed in the four first sliding holes respectively, one end of the two first supporting rods 11 and the two second supporting rods 12 is fixedly connected with the bottom of the top plate 10, four second sliding holes are formed in the top plate 10, a third supporting rod 58 is slidably installed in each of the four second sliding holes, one end of the four third supporting rods 58 is fixedly connected with the same fixing plate 59, the bottom of the fixing plate 59 is fixedly connected with a pressure sensor 60, the other end of the four third supporting rods 58 is fixedly connected with the top of the mounting plate 1, a hydraulic cylinder 8 is fixedly installed on the top of the mounting plate 1, an output shaft of the hydraulic cylinder 8 is fixedly connected with a telescopic rod 9, one end of the telescopic rod 9 is fixedly connected with the bottom of the top plate 10, and the hydraulic cylinder 8 is used to drive the telescopic rod 9 and the top plate 10 to move;

[0041] The expansion mechanism is arranged in the first through groove 35, the horizontal adjusting mechanism and the lifting mechanism are arranged on the two supporting plates 4, the bottom of the top plate 10 is fixedly connected with a scale 57, the mounting plate 1 is provided with a mounting hole, the scale 57 is slidably installed in the mounting hole, and the scale 57 is used to measure the vertical displacement distance of the single pile;

[0042] The bottom of the mounting plate 1 is fixedly provided with two fixed columns 27, the bottom of each of the two fixed columns 27 is provided with a fourth sliding groove 28, a rectangular column 29 is slidably installed in each of the two fourth sliding grooves 28, a single-pile positioning mechanism is arranged on the two rectangular columns 29, a steel bar positioning mechanism is connected to the single-pile positioning mechanism, the steel bar positioning mechanism is used for positioning the steel bar on the single pile, the lifting mechanism comprises two first motors 19, the two first motors 19 are fixedly installed at the top of the two sliding plates 3, first through holes are formed in the top inner walls of the two second sliding grooves 5, second screws 20 are rotatably installed in the two first through holes, the two second screws 20 are in threaded connection with the two connecting plates 6 respectively, the other ends of the two second screws 20 are fixedly connected with the output shafts of the two first motors 19 respectively, the first motor 19 is used for driving the second screw 20 and the connecting plate 6 to move, when the first motor 19 is turned on, the first motor 19 drives the second screw 20 to rotate, the second screw 20 drives the connecting plate 6 to move vertically, the single-pile positioning mechanism comprises an annular plate 30, the annular plate 30 is fixedly connected with the bottoms of the two rectangular columns 29, symmetrically two fifth sliding grooves 31 are formed in the inner wall of the annular plate 30, first guide blocks 33 are slidably installed in the two fifth sliding grooves 31, positioning inclined plates 34 are fixedly connected to the outer sides of the two first guide blocks 33 respectively, the two positioning inclined plates 34 are matched with the first inclined grooves 14, first springs 32 are fixedly connected to the outer sides of the two first guide blocks 33 respectively, one end of each of the two first springs 32 is fixedly connected with the inner wall of the fifth sliding groove 31, the two positioning inclined plates 34 are matched with the first inclined grooves 14 and are used for positioning the single pile, when the two positioning inclined plates 34 move vertically to a certain position, the first inclined grooves 14 press the two positioning inclined plates 34, and then the two positioning inclined plates 34 can clamp and position the single pile, one end of each of the two first supporting rods 11 is fixedly connected with a same positioning plate 13, a first inclined groove 14 is formed in the positioning plate 13, two connecting blocks 15 are fixedly installed at the bottom of the positioning plate 13, a hoop 16 is fixedly connected to each of the two connecting blocks 15, a plurality of fastening bolts 17 are connected to the two hoops 16, a nut 18 is in threaded connection with each of the plurality of fastening bolts 17, the plurality of fastening bolts 17 are used for positioning and connecting the two hoops 16, the two hoops 16 and the plurality of fastening bolts 17 can be used for fixedly connecting the single pile, the horizontal adjusting mechanism comprises four rectangular plates 21, the four rectangular plates 21 are fixedly installed at one side of the two supporting plates 4 respectively, a first screw 22 is in threaded connection with each of the four rectangular plates 21, a hand wheel 23 is fixedly connected to one end of each of the four first screws 22, a bearing 24 is fixedly installed at the outer side of each of the four first screws 22, a supporting leg 25 is fixedly connected to the outer side of each of the four bearings 24, a guide rod 26 is slidably installed on each of the four rectangular plates 21, one end of each of the four guide rods 26 is fixedly connected with the top of the supporting leg 25, the horizontal adjusting mechanism is used for adjusting the horizontal position of the mounting plate 1, when the hand wheel 23 is rotated, the first screw 22 can drive the bearing 24 and the supporting leg 25 to move vertically,Further, the horizontal position of the mounting plate 1 can be adjusted.

[0043] With reference to Figure 5 And Figure 6 The extension mechanism comprises a bidirectional screw 41, second through holes are formed in the inner walls of the two sides of the first through groove 35, the bidirectional screw 41 is rotatably installed in the two second through holes, the bidirectional screw 41 is in threaded connection with the two sliding plates 3, the outer side of the bidirectional screw 41 is fixedly connected with a small bevel gear 40, the small bevel gear 40 is engaged with a large bevel gear 39, a rotating shaft 38 is rotatably installed on the bottom inner wall of the first through groove 35, one end of the rotating shaft 38 is fixedly connected with the large bevel gear 39, the small bevel gear 40 is used for driving the bidirectional screw 41 and the two sliding plates 3 to move, when the large bevel gear 39 rotates, the small bevel gear 40 can drive the bidirectional screw 41 to rotate, the bidirectional screw 41 can drive the two sliding plates 3 to move horizontally, second through grooves 36 are formed in the inner walls of the two sides of the first through groove 35, third through holes are formed in the bottom inner walls of the two second through grooves 36, third screws 46 are rotatably installed in the two third through holes, the two third screws 46 are in threaded connection with the two rectangular columns 29 respectively, a second motor 37 is fixedly installed on the bottom of the mounting plate 1, the output shaft of the second motor 37 is fixedly connected with the other end of the rotating shaft 38, the second motor 37 is used for driving the rotating shaft 38 to rotate, when the third screw 46 rotates, the third screw 46 drives the rectangular column 29 to move vertically, the outer side of the rotating shaft 38 and one end of the third screw 46 are both fixedly installed with a first sprocket 42, the same first chain 43 is engaged on the two first sprockets 42, the outer side of the rotating shaft 38 and the other end of the third screw 46 are both fixedly installed with a second sprocket 44, the same second chain 45 is engaged on the two second sprockets 44, the two third screws 46 are used for driving the two rectangular columns 29 to move vertically, when the rotating shaft 38 rotates, the two first sprockets 42 are driven through the first chain 43, the two second sprockets 44 are driven through the second chain 45.

[0044] With reference to Figure 7The reinforcing steel bar positioning mechanism comprises two connecting rods 49, the two connecting rods 49 are fixedly installed at the top of the two positioning inclined plates 34 respectively, the outer sides of the two connecting rods 49 are slidingly installed with the same first circular plate 47, one end of the two second supporting rods 12 is fixedly connected with the top of the first circular plate 47, a plurality of second inclined grooves 48 are formed in the first circular plate 47, the one end of the two connecting rods 49 is fixedly connected with the same second circular plate 50, a plurality of placing holes 51 are formed in the second circular plate 50, the reinforcing steel bars on the single pile can be positioned through the cooperation of the first circular plate 47 and the second circular plate 50, the inner walls of the plurality of placing holes 51 are all formed with two sixth sliding grooves 52, the two sixth sliding grooves 52 are all slidingly installed with the second guide block 54, the outer sides of the two second guide blocks 54 are all fixedly connected with the positioning inclined block 55, the two positioning inclined blocks 55 are matched with the second inclined groove 48, the outer sides of the two positioning inclined blocks 55 are all fixedly connected with the second spring 53, one end of the two second springs 53 is fixedly connected with the inner walls of the two sixth sliding grooves 52 respectively, the plurality of positioning inclined blocks 55 and the two positioning inclined plates 34 are all formed with the arc-shaped groove 56, the two positioning inclined blocks 55 are matched with the second inclined groove 48 and are used for positioning the reinforcing steel bars on the single pile, when the two positioning inclined blocks 55 are vertically moved to a certain position, the second inclined groove 48 extrudes the two positioning inclined blocks 55, and then the two positioning inclined blocks 55 can position the reinforcing steel bars.

[0045] The implementation principle in the embodiment is that: in use, the device is moved to above the single pile to be tested through the four universal wheels 7, two first motors 19 are turned on, the two first motors 19 drive two second screws 20 to rotate respectively, the two second screws 20 drive two connecting plates 6 to move vertically upward respectively, so that the single pile can be located in the first chute 14, and the steel bars on the single pile can be located in the plurality of second chutes 48 and the plurality of placing holes 51, then the second motor 37 is turned on, the second motor 37 drives the rotating shaft 38 to rotate, the rotating shaft 38 drives the large bevel gear 39 to rotate, the large bevel gear 39 drives the small bevel gear 40 to rotate, the small bevel gear 40 drives the bidirectional screw 41 to rotate, the bidirectional screw 41 drives two sliding plates 3 to move away from each other, the two sliding plates 3 drive two supporting plates 4 to move away from each other respectively, the two supporting plates 4 drive two connecting plates 6 and four universal wheels 7 to move away from each other respectively, so as to increase the supporting area of the mounting plate 1 and ensure the stability of the device, at the same time, the rotating shaft 38 drives the first sprocket 42 and the second sprocket 44 to rotate, the two first sprockets 42 are driven by the first chain 43, and the two second sprockets 44 are driven by the second chain 45, so that the other first sprocket 42 and the other second sprocket 44 can drive two third screws 46 to rotate respectively, the two third screws 46 drive two rectangular columns 29 to move vertically downward respectively, the two rectangular columns 29 drive the annular plate 30 to move vertically downward, the annular plate 30 drives two first guide blocks 33 and two positioning inclined plates 34 to move vertically downward, when the two positioning inclined plates 34 move vertically downward to a certain position, the first chute 14 cooperates with the inclined surfaces of the two positioning inclined plates 34 to make the two positioning inclined plates 34 move close to each other, so that the two positioning inclined plates 34 can clamp and position the single pile, at the same time, the two positioning inclined plates 34 drive two connecting rods 49 to move vertically downward respectively, the two connecting rods 49 drive the second circular plate 50 to move vertically downward, the second circular plate 50 drives a plurality of second guide blocks 54 and a plurality of positioning inclined blocks 55 to move vertically downward, when the positioning inclined blocks 55 move vertically downward to a certain position, the inclined surfaces of the second chute 48 press the two positioning inclined blocks 55 to move close to each other, the two positioning inclined blocks 55 can clamp and position the steel bars on the single pile, so as to effectively ensure the positioning effect of the single pile and improve the success rate of the test, when the positioning is completed, the hydraulic cylinder 8 is turned on, the hydraulic cylinder 8 drives the telescopic rod 9 and the top plate 10 to move vertically upward, the two first supporting rods 11 and the two second supporting rods 12 drive the positioning plate 13 and the first circular plate 47 to move vertically upward respectively, so as to vertically pull the single pile and detect the pull-out capacity of the single pile, and the single pile displacement distance can be observed through the scale 57.

[0046] Embodiment two

[0047] The embodiment is different from embodiment one in that one side of the two support plates 4 is fixedly provided with an electric push rod, and the output shafts of the two electric push rods are fixedly connected with rectangular support plates. When the two electric push rods are turned on, the two electric push rods drive the two rectangular support plates to vertically move. When the two support plates contact with the foundation, the contact area of the equipment and the ground can be increased, the foundation subsidence caused by excessive pressure can be effectively avoided, and the accuracy of the test result is improved.

[0048] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A single pile vertical uplift static load test apparatus, characterized by: include: Mounting plate (1); The sliding plate (3) and the mounting plate (1) are provided with first sliding grooves (2) on both sides. The two sliding plates (3) are slidably installed in the two first sliding grooves (2) respectively. The bottom of the two sliding plates (3) is fixedly installed with support plates (4). The bottom of the two support plates (4) is provided with second sliding grooves (5). The two second sliding grooves (5) are slidably installed with connecting plates (6). The bottom of the two connecting plates (6) is rotatably installed with two universal wheels (7). The four universal wheels (7) are used for moving equipment. The top plate (10) and the mounting plate (1) have four first sliding holes. Two first support rods (11) and two second support rods (12) are slidably installed in the four first sliding holes respectively. One end of the two first support rods (11) and the two second support rods (12) are fixedly connected to the bottom of the top plate (10). The top plate (10) has four second sliding holes. A third support rod (58) is slidably installed in the four second sliding holes. One end of the four third support rods (58) is fixedly connected to the same fixing plate (59). A pressure sensor (60) is fixedly connected to the bottom of the fixing plate (59). The other end of the four third support rods (58) is fixedly connected to the top of the mounting plate (1). A hydraulic cylinder (8) is fixedly installed on the top of the mounting plate (1). A telescopic rod (9) is fixedly connected to the output shaft of the hydraulic cylinder (8). One end of the telescopic rod (9) is fixedly connected to the bottom of the top plate (10). The hydraulic cylinder (8) is used to drive the telescopic rod (9) and the top plate (10) to move. An extension mechanism is provided in the first through groove (35) of the mounting plate (1). The extension mechanism is set in the first through groove (35). A horizontal adjustment mechanism and a lifting mechanism are provided on the two support plates (4). A scale (57) is fixedly connected to the bottom of the top plate (10). An installation hole is provided on the mounting plate (1). The scale (57) is slidably installed in the installation hole. The scale (57) is used to measure the vertical displacement distance of a single pile. The single pile positioning mechanism has two fixed columns (27) fixedly installed at the bottom of the mounting plate (1). The bottom of each of the two fixed columns (27) is provided with a fourth sliding groove (28). A rectangular column (29) is slidably installed in each of the two fourth sliding grooves (28). The single pile positioning mechanism is set on the two rectangular columns (29). A steel bar positioning mechanism is connected to the single pile positioning mechanism. The steel bar positioning mechanism is used to position the steel bars on the single pile.

2. The single-pile vertical uplift static load test apparatus according to claim 1, characterized by: The horizontal adjustment mechanism includes four rectangular plates (21), which are fixedly installed on one side of two support plates (4). Each of the four rectangular plates (21) is threaded with a first screw (22). One end of each of the four first screws (22) is fixedly connected to a handwheel (23). Each of the four first screws (22) is fixedly installed with a bearing (24) on the outside. Each of the four bearings (24) is fixedly connected with a support foot (25) on the outside. Each of the four rectangular plates (21) is slidably installed with a guide rod (26). One end of each of the four guide rods (26) is fixedly connected to the top of each of the four support feet (25). The horizontal adjustment mechanism is used to adjust the horizontal position of the mounting plate (1).

3. The single-pile vertical uplift static load test apparatus according to claim 2, characterized in that: The lifting mechanism comprises two first motors (19), the two first motors (19) are fixedly installed at the top of the two sliding plates (3) respectively, first through holes are formed in the top inner walls of the two second sliding grooves (5), second screw rods (20) are rotatably installed in the two first through holes respectively, the two second screw rods (20) are threadedly connected with the two connecting plates (6) respectively, and the other ends of the two second screw rods (20) are fixedly connected with the output shafts of the two first motors (19).

4. The single-pile vertical uplift static load test apparatus according to claim 3, characterized in that: One end of each of the two first supporting rods (11) is fixedly connected with the same positioning plate (13), a first inclined groove (14) is formed in the positioning plate (13), two connecting blocks (15) are fixedly installed at the bottom of the positioning plate (13), a hoop (16) is fixedly connected with each of the two connecting blocks (15), a plurality of fastening bolts (17) are connected with the two hoops (16), a nut (18) is threadedly connected with each of the plurality of fastening bolts (17), and the plurality of fastening bolts (17) are used for positioning and connecting the two hoops (16).

5. The single-pile vertical uplift static load test apparatus according to claim 4, characterized in that: The single-pile positioning mechanism comprises an annular plate (30), the annular plate (30) is fixedly connected with the bottoms of the two rectangular columns (29), symmetrically two fifth sliding grooves (31) are formed in the inner wall of the annular plate (30), first guide blocks (33) are slidably installed in the two fifth sliding grooves (31), a positioning inclined plate (34) is fixedly connected with the outer side of each of the two first guide blocks (33), the two positioning inclined plates (34) are matched with the first inclined groove (14), a first spring (32) is fixedly connected with the outer side of each of the two first guide blocks (33), one end of each of the two first springs (32) is fixedly connected with the inner wall of the corresponding fifth sliding groove (31), and the two positioning inclined plates (34) are matched with the first inclined groove (14) and used for positioning the single pile.

6. The single-pile vertical uplift static load test apparatus according to claim 5, characterized in that: The expansion mechanism comprises a bidirectional screw rod (41), second through holes are formed in the inner walls of the two sides of the first through groove (35), the bidirectional screw rod (41) is rotatably installed in the two second through holes, the bidirectional screw rod (41) is threadedly connected with the two sliding plates (3), a small bevel gear (40) is fixedly connected with the outer side of the bidirectional screw rod (41), the small bevel gear (40) is engaged with a large bevel gear (39), a rotating shaft (38) is rotatably installed at the bottom inner wall of the first through groove (35), one end of the rotating shaft (38) is fixedly connected with the large bevel gear (39), and the small bevel gear (40) is used for driving the bidirectional screw rod (41) and the two sliding plates (3) to move.

7. The single-pile vertical uplift static load test apparatus according to claim 6, characterized in that: Second through grooves (36) are formed in the inner walls of the two sides of the first through groove (35), third through holes are formed in the bottom inner walls of the two second through grooves (36), third screw rods (46) are rotatably installed in the two third through holes respectively, a second motor (37) is fixedly installed at the bottom of the mounting plate (1), the output shaft of the second motor (37) is fixedly connected with the other end of the rotating shaft (38), and the second motor (37) is used for driving the rotating shaft (38) to rotate.

8. The single-pile vertical uplift static load test apparatus according to claim 7, characterized in that: The outer side of the rotating shaft (38) and one end of the third screw rod (46) are fixedly installed with a first chain wheel (42), and the two first chain wheels (42) are meshed with the same first chain (43). The outer side of the rotating shaft (38) and the other end of the other third screw rod (46) are fixedly installed with a second chain wheel (44), and the two second chain wheels (44) are meshed with the same second chain (45). The two third screw rods (46) are used for driving the two rectangular columns (29) to move vertically.

9. The single-pile vertical uplift static load test apparatus according to claim 8, characterized in that: The reinforcing steel bar positioning mechanism comprises two connecting rods (49), the two connecting rods (49) are fixedly installed at the top of the two positioning inclined plates (34), the outer side of the two connecting rods (49) is slidingly installed with the same first circular plate (47), one end of the two second supporting rods (12) is fixedly connected with the top of the first circular plate (47), a plurality of second inclined grooves (48) are formed in the first circular plate (47), one end of the two connecting rods (49) is fixedly connected with the same second circular plate (50), and a plurality of placing holes (51) are formed in the second circular plate (50).

10. The single-pile vertical uplift static load test apparatus according to claim 9, characterized in that: The inner wall of each of the plurality of placing holes (51) is formed with two sixth sliding grooves (52), the two sixth sliding grooves (52) are slidingly installed with the second guide block (54), the outer side of the two second guide blocks (54) is fixedly connected with the positioning inclined block (55), the two positioning inclined blocks (55) are matched with the second inclined groove (48), the outer side of the two positioning inclined blocks (55) is fixedly connected with the second spring (53), one end of the two second springs (53) is fixedly connected with the inner wall of the two sixth sliding grooves (52), and the plurality of positioning inclined blocks (55) and the two positioning inclined plates (34) are both formed with the arc-shaped groove (56). The two positioning inclined blocks (55) and the second inclined groove (48) are matched and used for positioning the reinforcing steel bars on the single pile.

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