Pile foundation static load detection device

Abstract

The invention discloses a pile foundation static load detection device, and relates to the technical field of pile foundation detection, and the pile foundation static load detection device comprises a mounting rack, a displacement sensor, a supporting template sleeving the top of a pile foundation, a plurality of jacks placed at the top of the supporting template, and weights placed at the tops of the jacks; a support is installed outside the supporting template, a reference plate is fixedly connected to the top of the support, a protection mechanism is installed on the installation frame, and the protection mechanism comprises a top plate installed on the top of the installation frame, a baffle slidably connected to the top of the top plate and a driving assembly installed on the installation frame and used for driving the baffle to move towards the position above the displacement sensor. A dovetail plate is fixedly connected to the bottom of the baffle, a dovetail groove is formed in the top of the top plate, the dovetail plate is slidably connected to the dovetail groove, a driving spring is fixedly connected to one side of the dovetail plate, and the end, away from the dovetail plate, of the driving spring is fixedly connected to the inner wall of one end of the dovetail groove. According to the invention, the possibility that the displacement sensor is accidentally damaged by a single test block or fragments generated when the test block is broken can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of pile foundation detection, and particularly relates to a static load detection device for pile foundations. Background Art

[0002] Currently, as an important foundation for structures such as high-rise buildings, bridges, and ports, the quality and stability of pile foundations are directly related to the safety and reliability of the entire building. The main purpose of pile foundation detection is to evaluate the bearing capacity, integrity, and construction quality of pile foundations through various physical and mechanical test methods, providing a scientific basis for engineering design and construction to ensure the long-term stability and safety of buildings. Detection not only helps to detect and handle potential quality problems at an early stage but also can optimize the design plan, improve construction efficiency, and reduce project costs.

[0003] The static load detection device for pile foundations in the related art generally includes a mounting frame arranged outside the pile foundation, a displacement sensor mounted on the mounting frame, a support formwork sleeved on the top of the pile foundation, a plurality of jacks placed on the top of the support formwork, and a heavy object placed on the top of the plurality of jacks; a support is installed outside the support formwork, a reference plate is fixedly connected to the top of the support, and the reference plate is arranged corresponding to the displacement sensor.

[0004] However, the above-mentioned heavy object is generally placed by stacking multiple concrete test blocks, and the heavy object is generally placed on the top of a plurality of jacks. When a single test block or the fragments when the test blocks break accidentally fall towards the displacement sensor, it is easy to cause damage to the displacement sensor. Summary of the Invention

[0005] This application provides a static load detection device for pile foundations, which can reduce the possibility that the fragments of a single test block or the broken test blocks accidentally damage the displacement sensor, and adopts the following technical solutions: A static load detection device for pile foundations includes a mounting frame arranged outside the pile foundation, a displacement sensor mounted on the mounting frame, a support formwork sleeved on the top of the pile foundation, a plurality of jacks placed on the top of the support formwork, and a heavy object placed on the top of the plurality of jacks; a support is installed outside the support formwork, a reference plate is fixedly connected to the top of the support, a protection mechanism is installed on the mounting frame, and the protection mechanism includes a top plate installed on the top of the mounting frame, a baffle plate slidably connected to the top of the top plate, and a driving component installed on the mounting frame for driving the baffle plate to move above the displacement sensor (17); a dovetail plate is fixedly connected to the bottom of the baffle plate, a dovetail groove is opened on the top of the top plate, the dovetail plate is slidably connected to the dovetail groove, a driving spring is fixedly connected to one side of the dovetail plate, and the end of the driving spring away from the dovetail plate is fixedly connected to one end inner wall of the dovetail groove.

[0006] By adopting the above solution, when it is necessary to protect the displacement sensor, first drive the baffle to move upward above the displacement sensor through the driving component. At this time, if a single test block or the fragments when the test block breaks fall down, the baffle can block the single test block or the fragments when the test block breaks, so as to reduce the possibility that the single test block or the fragments when the test block breaks accidentally damage the displacement sensor; In summary, the provided protection mechanism can reduce the possibility that the single test block or the fragments when the test block breaks accidentally damage the displacement sensor.

[0007] Preferably, the driving component includes a first vertical groove opened in the mounting frame, a driving motor installed at the bottom of the first vertical groove, and a lead screw fixed to the output shaft of the driving motor; a first gear is fixed to the top of the lead screw, and a first rack is fixed to one side of the baffle, and the first gear meshes with the first rack.

[0008] By adopting the above solution, when it is necessary to drive the baffle to move downward close to the heavy object, first drive the lead screw to rotate through the driving motor. The rotation of the lead screw drives the first gear to rotate. The rotation of the first gear drives the first rack to move downward close to the heavy object. The downward movement of the first rack close to the heavy object can drive the baffle to move downward close to the heavy object; In summary, the provided driving component facilitates driving the baffle to move downward close to the heavy object.

[0009] Preferably, a buffer mechanism is installed on the top of the baffle.

[0010] By adopting the above solution, the provided buffer mechanism can reduce the extrusion of the heavy object on the baffle.

[0011] Preferably, the buffer mechanism includes a plurality of second vertical grooves opened on the top of the baffle and a plurality of buffer rods slidably connected to the plurality of second vertical grooves in one-to-one correspondence; a buffer plate is fixed to the top of the plurality of buffer rods, and a buffer spring is fixed to the bottom of each buffer rod, and the end of the buffer spring away from the buffer rod is fixed to the bottom of the second vertical groove.

[0012] By adopting the above solution, the provided buffer plate, buffer rods and buffer springs facilitate buffering the heavy object.

[0013] Preferably, a blocking mechanism is installed on the top plate.

[0014] By adopting the above solution, the provided blocking mechanism facilitates blocking one side of the heavy object.

[0015] Preferably, the blocking mechanism includes a blocking rod hinged to the top of one side of the top plate, a push rod hinged to one end of the blocking rod, and a push plate fixedly connected to the end of the push rod away from the blocking rod; the blocking rod, the push rod, and the push plate are arranged in a triangle; a blocking block is fixedly connected to the top of the top plate, and a blocking spring is arranged between the blocking block and the push plate; a sliding sleeve is fixedly connected to the top of the top plate, a horizontal rod is fixedly connected to the side of the push plate close to the sliding sleeve, and the horizontal rod is slidably connected to the sliding sleeve; a driving plate is fixedly connected to one side of the baffle, and the driving plate can abut against the side of the push plate away from the push rod.

[0016] By adopting the above scheme, the first rack moves downward towards the lower part of the heavy object, driving the baffle to move downward towards the lower part of the heavy object. The baffle moving downward towards the lower part of the heavy object drives the driving plate to move. The driving plate moves to drive the push plate to move. Then, under the action of the push rod, the push plate pushes the blocking rod to a vertical state, so as to be able to block a single test block or the fragments when the test block breaks to a certain extent. Therefore, it can further reduce the possibility that a single test block or the fragments when the test block breaks accidentally damage the displacement sensor. In summary, the provided blocking mechanism can further reduce the possibility that a single test block or the fragments when the test block breaks accidentally damage the displacement sensor.

[0017] Preferably, a bottom plate is installed at the bottom of the mounting frame, and a limiting mechanism for limiting the bottom plate is installed on the bottom plate.

[0018] By adopting the above scheme, the provided limiting mechanism can reduce the possibility of the bottom plate moving in the horizontal direction.

[0019] Preferably, the limiting mechanism includes two first through holes opened in the bottom plate and two inserting rods respectively slidably connected to the two first through holes; a connecting plate is connected between the two inserting rods, the connecting plate is threadedly connected to the lead screw, and two strip holes for the connecting plate to move are opened on the side wall of the first vertical groove.

[0020] By adopting the above scheme, when the lead screw rotates, at this time the lead screw drives the connecting plate to move downward. The connecting plate moving downward drives the inserting rod to move downward. In this way, the inserting rod can be inserted into the soil under the bottom plate, so as to be able to limit the bottom plate. In summary, the provided limiting mechanism is convenient for limiting the bottom plate.

[0021] Preferably, support mechanisms are respectively installed on both sides of the bottom plate. Each support mechanism includes a cross plate fixedly connected to one side of the bottom plate, a second through hole opened in the cross plate, a vertical rod slidably connected to the second through hole in the vertical direction, and a support rod fixedly connected to the bottom of the vertical rod and inclined; a first reset groove is opened on one side of the second through hole, a first reset block is slidably connected in the first reset groove, the first reset block is fixedly connected to the side wall of the vertical rod, a first reset spring is fixedly connected to the bottom of the first reset block, and one end of the first reset spring away from the first reset block is fixedly connected to the bottom of the first reset groove; a transmission component for driving the vertical rod to move downward is installed in the first through hole.

[0022] By adopting the above scheme, when the insertion rod moves downward, at this time, the insertion rod together with the transmission component drives the vertical rod to move downward, and the downward movement of the vertical rod drives the support rod to move downward, so as to facilitate the support of the bottom plate; In summary, the provided support mechanism facilitates the support of the bottom plate, thereby improving the stability of the mounting rack, and thus further reducing the possibility that the fragments when a single test block or the test block breaks accidentally damage the displacement sensor.

[0023] Preferably, the transmission component includes a vertical tube rotatably connected to the first through hole, a second gear sleeved and fixed on the outer side wall of the vertical tube, a third through hole opened on the side wall of the first through hole, and a second rack slidably connected to the third through hole; the second gear meshes with the second rack; a second reset groove is opened on one side of the third through hole, a second reset block is slidably connected in the second reset groove, the second reset block is fixedly connected to the side wall of the second rack, a second reset spring is fixedly connected to the bottom of the second reset block, and one end of the second reset spring away from the second reset block is fixedly connected to the inner wall of one end of the second reset groove; a plurality of spiral blocks are fixedly connected to the side wall of the insertion rod, a plurality of spiral grooves are opened on the inner wall of the vertical tube, and the plurality of spiral blocks are respectively and correspondingly matched with the plurality of spiral grooves; a transmission block is fixedly connected to one end of the second rack close to the vertical rod, and an inclined surface is arranged at one end of the vertical rod close to the transmission block, and the inclined surface is matched with the side wall of the transmission block.

[0024] By adopting the above scheme, when the insertion rod moves downward, at this time, the insertion rod drives the vertical tube to rotate under the action of the spiral block and the spiral groove, the rotation of the vertical tube drives the second gear to rotate, the rotation of the second gear drives the second rack to move out of the third through hole, and then the second rack can drive the vertical rod to move downward under the action of the inclined surface; In summary, the provided transmission component facilitates driving the vertical rod to move downward.

[0025] In summary, the present application has the following beneficial effects: 1. When it is necessary to protect the displacement sensor, first drive the baffle to move upward above the displacement sensor through the driving component. At this time, if a single test block or the fragments when the test block breaks fall down, the baffle can block the single test block or the fragments when the test block breaks, thereby reducing the possibility that the single test block or the fragments when the test block breaks accidentally damage the displacement sensor; 2. When the first rack moves upward above the displacement sensor, the driving plate moves to drive the push plate to move. Then, under the action of the push rod, the push plate pushes the blocking rod to a vertical state, thereby being able to block the single test block or the fragments when the test block breaks to a certain extent, and thus further reducing the possibility that the single test block or the fragments when the test block breaks accidentally damage the displacement sensor; 3. When the insertion rod moves downward, at this time, the insertion rod together with the transmission component drives the vertical rod to move downward. The downward movement of the vertical rod drives the support rod to move downward, which is convenient for improving the support stability of the entire mounting frame, and can reduce the possibility of settlement of the entire mounting frame and improve the measurement accuracy. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the structure highlighting the protection mechanism in the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure highlighting the buffer mechanism in the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the structure highlighting the blocking mechanism in the embodiment of the present application.

[0030] Figure 5 It is a schematic diagram of the structure highlighting the support mechanism in the embodiment of the present application.

[0031] Figure 6 It is a schematic diagram of the structure highlighting the connection between the insertion rod and the vertical pipe in the embodiment of the present application.

[0032] Description of reference numerals: 1, pile foundation; 11, support template; 12, jack; 13, heavy object; 14, support; 15, reference plate; 16, mounting frame; 17, displacement sensor; 2, protection mechanism; 21, top plate; 211, dovetail groove; 22, baffle; 221, dovetail plate; 23, driving spring; 24, first vertical groove; 25, driving motor; 26, lead screw; 27, first gear; 28, first rack; 3, buffer mechanism; 31, second vertical groove; 32, buffer rod; 33, buffer plate; 34, buffer spring; 4, blocking mechanism; 41, blocking rod; 42, push rod; 43, push plate; 44, block; 45, blocking spring; 46, sliding sleeve; 47, horizontal rod; 48, driving plate; 5, bottom plate; 6, limiting mechanism; 61, first through hole; 62, inserting rod; 63, connecting plate; 64, strip-shaped hole; 7, supporting mechanism; 71, cross plate; 711, second through hole; 72, vertical rod; 721, inclined surface; 73, supporting rod; 74, first reset groove; 75, first reset block; 76, first reset spring; 8, transmission component; 81, vertical pipe; 811, spiral groove; 82, second gear; 83, third through hole; 84, second rack; 85, second reset groove; 86, second reset block; 87, second reset spring; 88, spiral block; 89, transmission block. Detailed implementation manners

[0033] The following further describes the present application in conjunction with the attached Figures 1-6 drawings for a more detailed explanation.

[0034] Among them, the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper", "lower", "bottom surface" and "top surface" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0035] The present application discloses a static load detection device for a pile foundation, as Figure 1 shown, including a mounting frame 16 arranged outside the pile foundation 1, a displacement sensor 17 mounted on the mounting frame 16, a support template 11 sleeved on the top of the pile foundation 1, a plurality of jacks 12 placed on the top of the support template 11, and a heavy object 13 placed on the tops of the plurality of jacks 12; a support 14 is installed outside the support template 11, a reference plate 15 is fixedly connected to the top of the support 14, and a protection mechanism 2 is installed on the mounting frame 16.

[0036] As Figure 1 and Figure 2As shown in the figure, the protection mechanism 2 includes a top plate 21 horizontally installed on the top of the mounting frame 16, a baffle 22 slidably connected to the top of the top plate 21 in the horizontal direction, and a driving assembly installed on the mounting frame 16 for driving the baffle 22 to move downward toward the lower part of the heavy object 13; a dovetail plate 221 is fixedly connected to the bottom of the baffle 22, a dovetail groove 211 is opened on the top of the top plate 21, the dovetail plate 221 is slidably connected to the dovetail groove 211 in the horizontal direction, a driving spring 23 is horizontally fixedly connected to one side of the dovetail plate 221, and one end of the driving spring 23 away from the dovetail plate 221 is fixedly connected to the inner wall of one end of the dovetail groove 211. When it is necessary to protect the displacement sensor 17, first drive the baffle 22 to move upward toward the upper part of the displacement sensor 17 through the driving assembly and finally move to the upper part of the displacement sensor 17. At this time, if a single test block or the fragments when the test block breaks fall down, the baffle 22 can block the single test block or the fragments when the test block breaks, thereby reducing the possibility that the single test block or the fragments when the test block breaks accidentally damage the displacement sensor 17; in summary, the provided protection mechanism 2 can reduce the possibility that the single test block or the fragments when the test block breaks accidentally damage the displacement sensor 17.

[0037] As Figure 1 and Figure 2 shown in the figure, the driving assembly includes a first vertical groove 24 vertically opened in the mounting frame 16, a driving motor 25 vertically installed at the bottom of the first vertical groove 24, and a lead screw 26 vertically fixedly connected to the output shaft of the driving motor 25; a first gear 27 is fixedly connected to the top of the lead screw 26, a first rack 28 is fixedly connected to one side of the baffle 22, and the first gear 27 meshes with the first rack 28. When it is necessary to drive the baffle 22 to move upward toward the upper part of the displacement sensor 17, first drive the lead screw 26 to rotate through the driving motor 25, the rotation of the lead screw 26 drives the first gear 27 to rotate, the rotation of the first gear 27 drives the first rack 28 to move upward toward the upper part of the displacement sensor 17, and the movement of the first rack 28 upward toward the upper part of the displacement sensor 17 can drive the baffle 22 to move upward toward the upper part of the displacement sensor 17; in summary, the provided driving assembly facilitates driving the baffle 22 to move upward toward the upper part of the displacement sensor 17.

[0038] As Figure 2 and Figure 3 shown in the figure, a buffer mechanism 3 is installed on the top of the baffle 22. The buffer mechanism 3 includes a plurality of second vertical grooves 31 opened on the top of the baffle 22 and a plurality of buffer rods 32 corresponding one by one and slidably connected to the plurality of second vertical grooves 31 in the vertical direction; a buffer plate 33 is horizontally fixedly connected to the tops of the plurality of buffer rods 32, a buffer spring 34 is vertically fixedly connected to the bottom of each buffer rod 32, and one end of the buffer spring 34 away from the buffer rod 32 is fixedly connected to the bottom of the second vertical groove 31. The provided buffer plate 33, buffer rods 32 and buffer springs 34 facilitate buffering the heavy object 13.

[0039] As Figure 2 and Figure 4 shown, a blocking mechanism 4 is installed on the top plate 21. The blocking mechanism 4 includes a blocking rod 41 hinged to the top of one side of the top plate 21, a push rod 42 hinged to one end of the blocking rod 41, and a push plate 43 fixedly connected to the end of the push rod 42 away from the blocking rod 41; the blocking rod 41, the push rod 42, and the push plate 43 are arranged in a triangle; a blocking block 44 is fixedly connected to the top of the top plate 21, and a blocking spring 45 is horizontally arranged between the blocking block 44 and the push plate 43. The two ends of the blocking spring 45 are respectively fixedly connected to the relative inner sides of the blocking block 44 and the push plate 43; a sliding sleeve 46 is fixedly connected to the top of the top plate 21, and a horizontal rod 47 is fixedly connected to the side of the push plate 43 close to the sliding sleeve 46. The horizontal rod 47 is slidably connected to the sliding sleeve 46 in the horizontal direction; a driving plate 48 is fixedly connected to one side of the baffle 22, and the driving plate 48 can abut against the side of the push plate 43 away from the push rod 42. The first rack 28 moves downward toward the lower part of the heavy object 13, driving the baffle 22 to move downward toward the lower part of the heavy object 13. The baffle 22 moving downward toward the lower part of the heavy object 13 drives the driving plate 48 to move. The driving plate 48 moving drives the push plate 43 to move. Then, under the action of the push rod 42, the push plate 43 pushes the blocking rod 41 to the vertical state, so that a certain block can be made for a single test piece or the fragments when the test piece breaks. Therefore, the possibility that a single test piece or the fragments when the test piece breaks accidentally damage the displacement sensor 17 can be further reduced; in summary, the provided blocking mechanism 4 can further reduce the possibility that a single test piece or the fragments when the test piece breaks accidentally damage the displacement sensor 17.

[0040] As Figure 2 shown, a bottom plate 5 is installed at the bottom of the mounting frame 16, and a limiting mechanism 6 for limiting the bottom plate 5 is installed on the bottom plate 5; the limiting mechanism 6 includes two first through holes 61 opened on the bottom plate 5 and two plug rods 62 respectively slidably connected in the two first through holes 61 in the vertical direction; a connecting plate 63 is horizontally connected between the two plug rods 62. The connecting plate 63 is threadedly connected to the lead screw 26, and two strip-shaped holes 64 for the connecting plate 63 to move vertically are opened on the side wall of the first vertical groove 24. When the lead screw 26 rotates, at this time, the lead screw 26 drives the connecting plate 63 to move downward. The connecting plate 63 moving downward drives the plug rods 62 to move downward, so that the plug rods 62 can be inserted into the soil under the bottom plate 5, thereby being able to limit the bottom plate 5; in summary, the provided limiting mechanism 6 facilitates the limitation of the bottom plate 5.

[0041] As Figure 2 and Figure 5As shown, support mechanisms 7 are respectively installed on both sides of the bottom plate 5. Each support mechanism 7 includes a cross plate 71 horizontally and fixedly connected to one side of the bottom plate 5, a second through hole 711 opened in the cross plate 71, a vertical rod 72 slidably connected vertically in the second through hole 711, and a support rod 73 fixedly connected to the bottom of the vertical rod 72 and inclined; a first reset groove 74 is opened on one side of the second through hole 711. A first reset block 75 is slidably connected vertically in the first reset groove 74. The first reset block 75 is fixedly connected to the side wall of the vertical rod 72. A first reset spring 76 is vertically and fixedly connected to the bottom of the first reset block 75. One end of the first reset spring 76 away from the first reset block 75 is fixedly connected to the bottom of the first reset groove 74; a transmission assembly 8 for driving the vertical rod 72 to move downward is installed in the first through hole 61; the bottom plate 5 is a precast member cast with concrete and is placed on a soft foundation. Through the synchronous action of the support mechanism 7 and the limiting mechanism 6, it is inserted into the soft foundation so that the bottom plate 5 does not settle relative to the soft foundation. When the insertion rod 62 moves downward, at this time, the insertion rod 62 together with the transmission assembly 8 drives the vertical rod 72 to move downward, and the downward movement of the vertical rod 72 drives the support rod 73 to move downward, which is convenient for supporting the bottom plate 5; in summary, the provided support mechanism 7 is convenient for supporting the bottom plate 5, thereby improving the stability of the mounting frame 16, and thus further reducing the possibility that the fragments when a single test block or test blocks are broken accidentally damage the displacement sensor 17.

[0042] As Figure 5 and Figure 6As shown in the figure, the transmission assembly 8 includes a vertical pipe 81 rotatably connected to the first through hole 61 through a bearing, a second gear 82 sleeved and fixed on the outer side wall of the vertical pipe 81, a third through hole 83 opened on the side wall of the first through hole 61, and a second rack 84 slidably connected to the third through hole 83 in the horizontal direction; under the action of the bearing, the vertical pipe 81 cannot move axially along the first through hole 61; the second gear 82 meshes with the second rack 84; a second reset groove 85 is opened on one side of the third through hole 83, and a second reset block 86 is slidably connected to the second reset groove 85 in the horizontal direction. The second reset block 86 is fixedly connected to the side wall of the second rack 84, and a second reset spring 87 is horizontally and fixedly connected to the bottom of the second reset block 86. One end of the second reset spring 87 away from the second reset block 86 is fixedly connected to the inner wall of one end of the second reset groove 85; a plurality of spiral blocks 88 are fixedly connected to the side wall of the insertion rod 62, and a plurality of spiral grooves 811 are opened on the inner wall of the vertical pipe 81. The plurality of spiral blocks 88 are in one-to-one correspondence and match with the plurality of spiral grooves 811. When the insertion rod 62 moves, the vertical pipe 81 will rotate under the action of the spiral blocks 88 and the spiral grooves 811; a transmission block 89 is fixedly connected to one end of the second rack 84 close to the vertical rod 72, and an inclined surface 721 is arranged at one end of the vertical rod 72 close to the transmission block 89. The inclined surface 721 matches the side wall of the transmission block 89. When the insertion rod 62 moves downward, at this time, the insertion rod 62 drives the vertical pipe 81 to rotate under the action of the spiral blocks 88 and the spiral grooves 811. The rotation of the vertical pipe 81 drives the second gear 82 to rotate. The rotation of the second gear 82 drives the second rack 84 to move out of the third through hole 83, and then the second rack 84 can drive the vertical rod 72 to move downward under the action of the inclined surface 721; in summary, the provided transmission assembly 8 facilitates driving the vertical rod 72 to move downward.

[0043] Working principle: When it is necessary to protect the displacement sensor 17, first drive the lead screw 26 to rotate through the drive motor 25. The rotation of the lead screw 26 drives the first gear 27 to rotate. The rotation of the first gear 27 drives the first rack 28 to move upward close to the upper part of the displacement sensor 17, and simultaneously drives the baffle 22 to move upward to the upper part of the displacement sensor 17 and finally makes the baffle 22 placed above the displacement sensor 17. At this time, if a single test block or the fragments when the test block breaks fall down, the baffle 22 can block the single test block or the fragments when the test block breaks, thereby reducing the possibility that the single test block or the fragments when the test block breaks accidentally damage the displacement sensor 17; in summary, the provided protection mechanism 2 can reduce the possibility that the single test block or the fragments when the test block breaks accidentally damage the displacement sensor 17.

[0044] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A pile foundation static load detection device, comprising a mounting frame (16) arranged outside a pile foundation (1), a displacement sensor (17) mounted on the mounting frame (16), a support template (11) sleeved on the top of the pile foundation (1), a plurality of jacks (12) placed on the top of the support template (11), and a weight (13) placed on the top of the plurality of jacks (12); a bracket (14) is mounted outside the support template (11), and a reference plate (15) is fixed to the top of the bracket (14), characterized in that: The mounting frame (16) is provided with a protection mechanism (2), the protection mechanism (2) comprising a top plate (21) mounted on the top of the mounting frame (16), a baffle plate (22) slidably connected to the top of the top plate (21), and a driving component mounted on the mounting frame (16) for driving the baffle plate (22) to move toward the top of the displacement sensor (17); a dovetail plate (221) is fixedly connected to the bottom of the baffle plate (22), a dovetail groove (211) is provided on the top of the top plate (21), the dovetail plate (221) is slidably connected to the dovetail groove (211), a driving spring (23) is fixedly connected to one side of the dovetail plate (221), and one end of the driving spring (23) away from the dovetail plate (221) is fixedly connected to the inner wall of one end of the dovetail groove (211).

2. A pile foundation static load detection device according to claim 1, characterized in that: The driving assembly comprises a first vertical slot (24) provided in the mounting frame (16), a driving motor (25) mounted at the bottom of the first vertical slot (24), and a lead screw (26) fixed to the output shaft of the driving motor (25); a first gear (27) is fixed to the top of the lead screw (26), a first rack (28) is fixed to one side of the baffle (22), and the first gear (27) is meshed with the first rack (28).

3. A pile foundation static load detection device according to claim 1, characterized in that: A buffer mechanism (3) is installed on the top of the baffle (22).

4. A pile foundation static load detection device according to claim 3, characterized in that: The buffer mechanism (3) comprises a plurality of second vertical slots (31) opened at the top of the baffle (22) and a plurality of buffer rods (32) slidably connected to the plurality of second vertical slots (31) in a one-to-one manner; a buffer plate (33) is fixedly connected to the top of the plurality of buffer rods (32), a buffer spring (34) is fixedly connected to the bottom of each buffer rod (32), and one end of the buffer spring (34) away from the buffer rod (32) is fixedly connected to the bottom of the second vertical slot (31).

5. A pile foundation static load detection device according to claim 2, characterized in that: A blocking mechanism (4) is installed on the top plate (21).

6. A pile foundation static load detection device according to claim 5, characterized in that: The blocking mechanism (4) comprises a blocking rod (41) hinged on the top of one side of the top plate (21), a push rod (42) hinged on one end of the blocking rod (41), and a push plate (43) fixed to one end of the push rod (42) away from the blocking rod (41); the blocking rod (41), the push rod (42) and the push plate (43) are arranged in a triangular shape; a blocking block (44) is fixed on the top of the top plate (21), and a blocking spring (45) is provided between the blocking block (44) and the push plate (43); a sliding sleeve (46) is fixed on the top of the top plate (21), and a horizontal rod (47) is fixed on the side of the push plate (43) close to the sliding sleeve (46), and the horizontal rod (47) is slidably connected to the sliding sleeve (46); a driving plate (48) is fixed on one side of the baffle plate (22), and the driving plate (48) can abut against the side of the push plate (43) away from the push rod (42).

7. A pile foundation static load detection device according to claim 1, characterized in that: A bottom plate (5) is installed at the bottom of the mounting frame (16), and a limiting mechanism (6) for limiting the position of the bottom plate (5) is installed on the bottom plate (5).

8. A pile foundation static load detection device according to claim 7, characterized in that: The limiting mechanism (6) comprises two first through holes (61) formed on the bottom plate (5) and two insertion rods (62) respectively slidably connected to the two first through holes (61); a connecting plate (63) is connected between the two insertion rods (62), and the connecting plate (63) is threadedly connected to the lead screw (26); and the side wall of the first vertical groove (24) is provided with two strip holes (64) for the connecting plate (63) to move.

9. A pile foundation static load detection device according to claim 8, characterized in that: Support mechanisms (7) are respectively installed on both sides of the bottom plate (5), and each group of the support mechanisms (7) comprises a horizontal plate (71) fixedly connected to one side of the bottom plate (5), a second through hole (711) provided in the horizontal plate (71), a vertical rod (72) slidably connected to the second through hole (711) in the vertical direction, and a support rod (73) fixedly connected to the bottom of the vertical rod (72) and arranged obliquely; a first reset groove (74) is provided on one side of the second through hole (711), a first reset block (75) is slidably connected in the first reset groove (74), the first reset block (75) is fixedly connected to the side wall of the vertical rod (72), a first reset spring (76) is fixedly connected to the bottom of the first reset block (75), and one end of the first reset spring (76) away from the first reset block (75) is fixedly connected to the bottom of the first reset groove (74); a transmission assembly (8) for driving the vertical rod (72) to move downward is installed in the first through hole (61).

10. A pile foundation static load detection device according to claim 9, characterized in that: The transmission assembly (8) comprises a vertical tube (81) rotatably connected to the first through hole (61), a second gear (82) sleeved and fixed on the outer wall of the vertical tube (81), a third through hole (83) provided on the side wall of the first through hole (61), and a second rack (84) slidably connected to the third through hole (83); the second gear (82) is meshed with the second rack (84); a second reset groove (85) is provided on one side of the third through hole (83), a second reset block (86) is slidably connected in the second reset groove (85), the second reset block (86) is fixedly connected to the side wall of the second rack (84), and the bottom of the second reset block (86) is fixedly connected to the second rack (84). There is a second return spring (87), one end of the second return spring (87) away from the second return block (86) is fixedly connected to the inner wall of one end of the second return groove (85); the side wall of the insertion rod (62) is fixedly connected with a plurality of spiral blocks (88), the inner wall of the vertical tube (81) is provided with a plurality of spiral grooves (811), and the plurality of spiral blocks (88) are matched with the plurality of spiral grooves (811) in a one-to-one correspondence; the second rack (84) is fixedly connected with a transmission block (89) at one end close to the vertical rod (72), and an inclined surface (721) is provided at one end of the vertical rod (72) close to the transmission block (89), and the inclined surface (721) matches the side wall of the transmission block (89).

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