Detachable device for foundation pile self-balance detection

Abstract

The utility model discloses a detachable device for foundation pile self-balancing detection, which belongs to the technical field of building construction, and comprises a mounting frame, a guide rod and a detection piece, the mounting frame comprises two side frames and two cross rods, two ends of the cross rods are respectively connected with the top ends of different side frames to form a rectangular frame structure, and the guide rod is connected with the detection piece. Quick connecting mechanisms are arranged between the side frames and the cross rods; the guide rod is arranged between the two cross rods in a sliding mode and is perpendicular to the cross rods, and the end of the guide rod is in threaded connection with a locking nut used for fixing the position of the guide rod; and the detection piece is arranged on the guide rod in a sliding manner. According to the detachable device for foundation pile self-balancing detection, the guide gear and the rack are matched and located at the position for controlling the detection piece, after the limiting rod is inserted into the limiting hole, rotation of the guide gear is limited, rigid limiting is conducted on the position of the detection piece, it is guaranteed that the detection piece does not deviate under the effect of transverse external force, and the stability of the position of the displacement wire is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to a detachable device for self-balancing detection of foundation piles. Background Art

[0002] With the continuous development of construction projects, the quality of pile foundations, as the foundation of buildings, plays a vital role in the safety of the entire building. The pile foundation self-balancing static load test is a test method used to evaluate the bearing capacity of pile foundations. In order to ensure the quality of pile foundations, pile foundation self-balancing detection has become an indispensable part of the project.

[0003] The patent with authorization announcement number CN205712230U discloses a pile displacement observation device for a self-balancing static load test of a pile foundation. In this technology, the pulley block is supported by a fixed frame and a movable frame to control the movement of the pulley block. The slideway is pressed downward by the pulley block and the gravity block to prevent the displacement wire from shifting horizontally. However, since the movable frame presses the slideway to maintain its position, the static friction between the movable frame and the slideway maintains stability. When the movable frame is subjected to lateral force, it is easy to shift, causing the displacement wire to no longer be perpendicular to the pile body, thereby affecting the accuracy of the test structure.

[0004] Therefore, we propose a detachable device for pile self-balancing detection to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that after the position of the displacement wire is adjusted, the position of the displacement wire is not rigidly limited, which is prone to lateral deviation and causes data errors, and proposes a detachable device for pile foundation self-balancing detection.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A detachable device for pile foundation self-balancing detection comprises a mounting frame, a guide rod and a detection piece, wherein the mounting frame comprises two side frames and two cross bars, the two ends of the cross bars are respectively connected to the top ends of different side frames to form a rectangular frame structure, and a quick connection mechanism is arranged between the side frames and the cross bars; the guide rod is slidably arranged between the two cross bars and kept perpendicular to the cross bars, and a locking nut for fixing the position of the guide rod is threadedly connected to the end of the guide rod; the detection piece is slidably arranged on the guide rod.

[0008] Furthermore, the quick connection mechanism includes an insertion rod fixedly arranged on the top end of the side frame, two symmetrically arranged clamping blocks are fixedly arranged on the outer peripheral surface of the insertion rod, a through hole matching the insertion rod and the clamping block is opened on the cross bar, two symmetrically distributed wedge blocks are arranged on the outer periphery of the through hole, and the clamping block is provided with a bevel corresponding to the wedge block on the side close to the side frame.

[0009] Furthermore, a slide groove is provided in the middle of the cross bar along the length direction, the guide rod passes through the slide groove, and a positioning block is also provided on the guide rod, and the positioning block is fitted with the inner side of the cross bar.

[0010] Further, the detection member includes two T-shaped mounting plates, two connecting rods are fixedly arranged between the two mounting plates, rollers are rotatably arranged on the connecting rods, a mounting shaft is also fixedly installed on the opposite side of the mounting plate, a guide gear is rotatably arranged between the two mounting shafts, a rack is arranged on the top surface of the guide rod, the guide gear is meshed with the rack, the roller is against the bottom surface of the guide rod, and a limiting structure for limiting the rotation of the guide gear is arranged between the guide gear and the mounting shaft;

[0011] It also includes a pulley and a displacement wire. The pulley is located between the two connecting rods and an adjustment structure is arranged between the connecting rods. One end of the displacement wire is buried in the pile body to be measured, and the other end passes around the pulley and is connected to a counterweight block.

[0012] Furthermore, the limiting structure includes a limiting hole opened along the axis of the installation shaft, the limiting hole passes through the installation shaft and the guide gear, a limiting rod is inserted in the limiting hole, and the cross-section of the limiting rod and the limiting hole is hexagonal.

[0013] Furthermore, the adjusting structure is threadedly connected to an adjusting rod between two connecting rods, and the pulley is rotatably arranged on the adjusting rod.

[0014] The utility model has the following beneficial technical effects:

[0015] The detachable device for pile foundation self-balancing detection is configured to move a guide rod on a crossbar and cooperate with a guide gear to move a detection member on the guide rod, thereby facilitating the detection member to be adjusted to a suitable detection position, and the guide rod can be locked and positioned under the action of a locking nut.

[0016] Through the cooperation of the guide gear and the rack, when the limit rod is inserted into the limit hole, the rotation of the guide gear is restricted, and the position of the detection part is rigidly limited to ensure that the detection part does not deviate under the action of lateral external force, thereby ensuring the stability of the displacement wire position.

[0017] The utility model provides an adjustment structure, so that after the detection part is roughly adjusted along with the guide gear and the rack, the position of the displacement wire can be finely adjusted through the adjustment structure, thereby ensuring the accurate position of the displacement wire, reducing data errors and improving detection accuracy.

[0018] The utility model provides a quick connection structure, so that the mounting frame and the guide rod can be quickly disassembled and assembled without the aid of tools, and the connection stability is high. By disassembling the mounting frame and the guide rod, foundation piles of different sizes can be adapted and reused, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the quick connection mechanism in the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the crossbar and the perforations in the utility model;

[0022] Figure 4 It is a structural schematic diagram of the guide rod in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the detection component in the utility model;

[0024] Figure 6 It is a schematic diagram of the explosion structure of the detection part in the utility model.

[0025] In the figure: 1. mounting frame; 11. side frame; 12. cross bar; 13. block; 131. bevel edge; 14. through hole; 15. wedge block; 2. guide rod; 21. positioning block; 22. rack; 23. locking nut; 3. detection part; 31. mounting plate; 32. connecting rod; 33. roller; 34. mounting shaft; 341. limit hole; 342. limit rod; 35. guide gear; 36. adjustment rod; 37. pulley; 38. displacement wire; 39. counterweight. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0027] like Figure 1-3 A detachable device for pile foundation self-balancing detection includes a mounting frame 1, a guide rod 2, and a detection member 3. The mounting frame 1 plays a supporting role, and the detection member 3 is slidably set on the guide rod 2. During detection, the detection member 3 is controlled to the top of the pile body to be detected, and the detection is performed after the position of the detection member 3 is fixed.

[0028] The mounting frame 1 includes two side frames 11 and two cross bars 12. Both ends of the cross bars 12 are respectively connected to the top ends of different side frames 11 to form a rectangular frame structure. A quick connection mechanism is provided between the side frames 11 and the cross bars 12. The use of the quick connection mechanism can improve the efficiency of pile detection, so that the piles can be quickly assembled during the construction process, thereby avoiding the tedious process of manually processing a large number of brackets in the traditional construction method, and the connection stability is high. By disassembling the mounting frame and the guide rod, it can adapt to piles of different sizes and be reused, which is convenient and fast.

[0029] like Figure 1-3 The quick connection mechanism includes an insertion rod fixedly arranged at the top of the side frame 11, and two symmetrically arranged card blocks 13 are fixedly arranged on the outer circumference of the insertion rod, and a through hole 14 adapted to the insertion rod and the card block 13 is opened on the cross bar 12. During installation, the card block 13 and the insertion rod are inserted into the corresponding through holes 14, so that the card block 13 passes through the through holes 14, and two symmetrically distributed wedge blocks 15 are arranged on the outer circumference of the through holes 14. The card block 13 is provided with a hypotenuse 131 corresponding to the wedge block 15 on the side close to the side frame 11. After the card block 13 passes through the through holes 14, the side frame 11 is rotated so that the hypotenuse 131 of the card block 13 presses the inclined surface of the wedge block 15, so that the wedge block 15 presses the cross bar 12 to one side of the side frame 11 until the side frame 11 and the cross bar 12 are tightly fixed, and at this time, the angle between the side frame 11 and the cross bar 12 is greater than 90°, thereby ensuring the overall stability of the mounting frame 1.

[0030] The guide rod 2 is slidably arranged between the two cross bars 12 and maintained perpendicular to the cross bar 12. By moving the position of the guide rod 2, the detection member 3 can be adjusted in the X direction to ensure that the guide rod 2 reaches the top of the pile body, and then the detection member 3 is adjusted in the Y direction along the guide rod 2 so that the detection member 3 reaches the top of the pile body. A locking nut 23 for fixing the position of the guide rod 2 is threadedly connected to the end of the guide rod 2. By rotating the locking nut 23, the locking nut 23 is pressed against the side wall of the cross bar 12 to ensure the stability of the guide rod 2.

[0031] like Figure 1 and 4 A slide groove is opened in the middle of the cross bar 12 along the length direction, and the guide rod 2 runs through the slide groove. The cross section of the guide rod 2 is rectangular, and the height of the guide rod 2 is consistent with the height of the slide groove, ensuring that the guide rod 2 slides stably in the slide groove without rotating. A positioning block 21 is also provided on the guide rod 2. When the side frame 11 and the cross bar 12 are installed, the positioning block 21 fits with the inner side of the cross bar 12 to ensure that when the guide rod 2 is in the moving position, the positioning of the positioning block 2 keeps the guide rod 2 always perpendicular to the cross bar 12 without deflection.

[0032] like Figure 4-6The detection member 3 includes two T-shaped mounting plates 31, two connecting rods 32 are fixedly arranged between the two mounting plates 31, and rollers 33 are rotatably arranged on the connecting rods 32. A mounting shaft 34 is also fixedly arranged on the opposite side of the mounting plate 31. When installed, the mounting shaft 34 is located above the guide rod 2, and the connecting rod 32 is located below the guide rod 2. A guide gear 35 is rotatably arranged between the two mounting shafts 34. A rack 22 is arranged on the top surface of the guide rod 2, and the guide gear 35 meshes with the rack 22. The roller 33 is against the bottom surface of the guide rod 2. When the detection member 3 moves, the detection member 3 can be easily moved by the cooperation of the guide gear 35 and the rack 22, as well as the action of the roller 33. The position of the detection member 3 is adjusted by moving the position on the guide rod 2. A limit structure for limiting the rotation of the guide gear 35 is provided between the guide gear 35 and the mounting shaft 34. After the position adjustment is completed, the guide gear 35 and the mounting shaft 34 are fixed together by the limit structure to limit the rotation of the guide gear 35. At this time, the guide gear 35 and the teeth of the rack 22 are engaged together and can no longer move, thereby achieving position fixation. The teeth of the guide gear 35 and the rack 22 are rigid limiters, which are more stable than the locking method by static friction in the prior art, thereby reducing the risk of the detection member 3 being offset under the action of lateral external forces and ensuring the stability of the detection position.

[0033] The detection member 3 also includes a pulley 37 and a displacement wire 38. The pulley 37 is located between the two connecting rods 32 and an adjustment structure is arranged between the connecting rods 32. One end of the displacement wire 38 is buried in the pile body to be measured, and the other end is connected to a counterweight block 39 by bypassing the pulley 37. During detection, a pulling force is applied to the displacement wire 38 by the counterweight block 39 to tighten the displacement wire 38. Under the traction of the displacement wire 38, the displacement wire 38 tends to maintain a vertical state, and the detection member 3 tends to move above the pile body to achieve self-balancing adjustment, reduce the adjustment time during the detection process, and reduce labor costs. After the position of the detection member 3 is fixed by the limiting structure, the position of the pulley 37 is fine-tuned by the adjustment structure to ensure that the displacement wire 38 is in a state perpendicular to the pile body. When the pile body is loaded and displaced, the length of the displacement wire 38 changes. Under the action of the counterweight block 39, the pulley 37 rotates, and the elongation of the displacement wire 38 is measured by the micrometer to calculate the displacement of the pile body.

[0034] like Figure 4-6The limiting structure includes a limiting hole 341 opened along the axis of the mounting shaft 34, the limiting hole 341 passes through the mounting shaft 34 and the guide gear 35, and a limiting rod 342 is inserted in the limiting hole 341. The cross-sections of the limiting rod 342 and the limiting hole 341 are hexagonal. When adjusting the position of the detection member 3, the limiting rod 342 is pulled out from the limiting hole 341, and the guide gear 35 can rotate freely at this time. After the position of the detection member 3 reaches a suitable position, the limiting rod 342 is inserted into the limiting hole 341, so that the limiting rod 342 passes through the mounting shaft 34 and the guide gear 35 at the same time. Since the cross-sections of the limiting rod 342 and the limiting hole 341 are non-circular, under the action of the limiting rod 342, the guide gear 35 and the mounting shaft 34 are circumferentially limited.

[0035] like Figure 4-6 The adjusting structure is threadedly connected to the adjusting rod 36 between the two connecting rods 32 (a threaded sleeve is fixed to the middle of the connecting rod 32, and the threaded sleeve is threadedly connected to the adjusting rod 36), and the pulley 37 is rotatably set on the adjusting rod 36. The pulley 37 is supported and rotated by the adjusting rod 36. By rotating the adjusting rod 36, the adjusting rod 36 can be axially displaced under the action of the thread, thereby realizing fine adjustment of the position of the pulley 37, thereby ensuring the accurate position of the displacement wire 38, reducing data errors, and improving the accuracy of detection.

[0036] The working principle of the utility model is as follows:

[0037] When in use, the side frame 11 and the cross bar 12 are moved to the target location for detection, and after the block 13 passes through the through hole 14, the side frame 11 is rotated so that the inclined edge 131 of the block 13 presses the inclined surface of the wedge block 15, so that the wedge block 15 presses the cross bar 12 to one side of the side frame 11 until the side frame 11 and the cross bar 12 are tightly fixed. When installing the side frame 11 and the cross bar 12, it is necessary to insert the guide rod 2 into the slide groove of the cross bar 12 before fixing. After fixing the mounting frame 1, the guide rod 2 is also located between the two cross bars 12 and can slide freely. By sliding the guide rod 2, the detection piece 3 is adjusted in the X direction to ensure that the guide rod 2 reaches the top of the pile body, and then the detection piece 3 is adjusted in the Y direction along the guide rod 2 so that the detection piece 3 reaches the top of the pile body, and one end of the displacement wire 38 is buried in the pile body to be measured, and the other end is buried in the pile body to be measured. The end of the pulley 37 is connected to the counterweight block 39, and a pulling force is applied to the displacement wire 38 through the counterweight block 39 to tighten the displacement wire 38. Under the traction of the displacement wire 38, the displacement wire 38 tends to maintain a vertical state, and the detection member 3 tends to move above the pile body to achieve self-balancing adjustment. The limit rod 342 is inserted into the limit hole 341, so that the limit rod 342 simultaneously penetrates the installation shaft 34 and the guide gear 35 to limit the rotation of the guide gear 35. By rotating the adjusting rod 36, the adjusting rod 36 can be axially displaced under the action of the thread, thereby achieving fine adjustment of the position of the pulley 37 to ensure that the displacement wire 38 is in a state perpendicular to the pile body. When the pile body is loaded and displaced, the length of the displacement wire 38 changes. Under the action of the counterweight block 39, the pulley 37 rotates, and the elongation of the displacement wire 38 is measured by the micrometer to calculate the displacement of the pile body.

Claims

1. A detachable device for pile foundation self-balancing detection, comprising a mounting frame (1) and a guide rod (2), wherein the mounting frame (1) comprises two side frames (11) and two cross bars (12), wherein two ends of the cross bars (12) are respectively connected to the top ends of different side frames (11) to form a rectangular frame structure, characterized in that: A quick connection mechanism is provided between the side frame (11) and the cross bar (12); the guide rod (2) is slidably arranged between the two cross bars (12) and is kept perpendicular to the cross bars (12); a locking nut (23) for fixing the position of the guide rod (2) is threadedly connected to the end of the guide rod (2); a movable detection member (3) is provided on the guide rod (2); a pulley (37) and a displacement wire (38) are installed on the detection member (3); one end of the displacement wire (38) is buried in the pile body to be measured; the other end of the displacement wire (38) bypasses the pulley (37) and is connected to a counterweight (39).

2. A detachable device for pile foundation self-balancing detection according to claim 1, characterized in that: The quick connection mechanism comprises an insertion rod fixedly arranged at the top end of the side frame (11), two symmetrically arranged clamping blocks (13) are fixedly arranged on the outer peripheral surface of the insertion rod, a through hole (14) adapted to the insertion rod and the clamping block (13) is opened on the cross bar (12), two symmetrically distributed wedge blocks (15) are arranged on the outer periphery of the through hole (14), and a bevel (131) corresponding to the wedge block (15) is arranged on the side of the clamping block (13) close to the side frame (11).

3. A detachable device for pile foundation self-balancing detection according to claim 2, characterized in that: A slide groove is provided in the middle of the cross bar (12) along the length direction, and the guide rod (2) passes through the slide groove. A positioning block (21) is also provided on the guide rod (2), and the positioning block (21) is fitted with the inner side of the cross bar (12).

4. A detachable device for pile foundation self-balancing detection according to claim 1 or 3, characterized in that: The detection member (3) comprises two T-shaped mounting plates (31), two connecting rods (32) are fixedly arranged between the two mounting plates (31), rollers (33) are rotatably arranged on the connecting rods (32), mounting shafts (34) are fixedly arranged on opposite sides of the mounting plates (31), a guide gear (35) is rotatably arranged between the two mounting shafts (34), a rack (22) is arranged on the top surface of the guide rod (2), the guide gear (35) is meshed with the rack (22), the roller (33) is abutted against the bottom surface of the guide rod (2), and a limit structure for limiting the rotation of the guide gear (35) is arranged between the guide gear (35) and the mounting shaft (34).

5. A detachable device for pile foundation self-balancing detection according to claim 4, characterized in that: The limiting structure comprises a limiting hole (341) opened along the axis of the installation shaft (34), the limiting hole (341) passing through the installation shaft (34) and the guide gear (35), a limiting rod (342) inserted in the limiting hole (341), and the cross-sections of the limiting rod (342) and the limiting hole (341) are hexagonal.

6. A detachable device for pile foundation self-balancing detection according to claim 5, characterized in that: The pulley (37) is located between the two connecting rods (32) and an adjustment structure is provided between the connecting rods (32), the adjustment structure comprising an adjustment rod (36) threadedly connected between the two connecting rods (32), and the pulley (37) is rotatably provided on the adjustment rod (36).

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