Low-strain foundation pile detector

Abstract

The utility model relates to the technical field of constructional engineering quality control, and discloses a low-strain foundation pile detector which comprises a foundation pile and a front clamping plate arranged on the front side of the outer surface of the foundation pile, a rear clamping plate is arranged on the rear side of the outer surface of the foundation pile, and staggered grooves are formed in the outer surfaces of the front clamping plate and the rear clamping plate. And the rear clamping plate and the front clamping plate are mutually staggered through the staggered grooves. According to the low-strain foundation pile detector, the front clamping plate, the rear clamping plate, the adjusting knob, the spiral ejector rod and the adjusting knob are used in cooperation, the front clamping plate and the rear clamping plate are staggered to fix the low-strain foundation pile detector to the outer surface of a foundation pile, then the adjusting knob is screwed, the adjusting knob drives the spiral ejector rod to rotate, and the spiral ejector rod drives the detection probe to move backwards; the detection probe abuts against the outer surface of the foundation pile, so that the device can stably abut the detection probe against the outer surface of the foundation pile, manual hand holding is not needed, the probability that the detection probe is loosened during detection is reduced, and the stability of detection data is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering quality control, in particular to a low-strain pile foundation detector. Background Art

[0002] The quality control of construction projects includes the detection of the bottom strain of the foundation piles. In the process of pile detection, a low-strain pile detector is currently often used to detect the internal structure of the foundation piles. The low-strain reflection wave method is used to detect whether there are discontinuous interface problems such as honeycombs, fractures, holes and mud inclusions. The low-strain pile detector includes a hammer for striking the surface of the foundation pile and a sensor for receiving the reflected wave. The sensor is usually placed at a position two-thirds away from the pile center, and the hammer is used to strike the pile center for inspection. The sensor can be measured multiple times according to different hammer heads, different striking frequencies and intensities of the hammer. When the hammer strikes the surface of the foundation pile, the sensor needs to be fixed and close to the surface of the foundation pile to facilitate the reception of the reflected wave. A conventional fixing method is to press the sensor by hand to prevent the sensor from moving and shaking. However, the above operation wastes manpower and is inconvenient to operate. The stability of manual pressing is poor, and the detection probe is prone to loosening, affecting the accuracy of the detection. Therefore, it is necessary to improve the existing low-strain pile detector so that the sensor it is suitable for is easy to place and maintain contact on the foundation pile. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a low-strain pile foundation detector, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-strain pile foundation detector, comprising a pile foundation and a front splint arranged on the front side of the outer surface of the pile foundation, a rear splint is arranged on the rear side of the outer surface of the pile foundation, the outer surfaces of the front splint and the rear splint are both provided with staggered grooves, the rear splint and the front splint are staggered with each other through the staggered grooves, two groups of support rods are fixedly connected to the left and right sides of the front side of the rear splint, and the inner ends of the support rods are fixedly connected to support plates.

[0007] Preferably, a movable sleeve is slidably inserted into the front side of the support plate, the rear end of the movable sleeve is connected to the front side of the front clamping plate, the outer surface of the movable sleeve is provided with an external thread, and the rear side of the outer surface of the movable sleeve is provided with an adjusting ring threadedly connected to the external thread, and the back side of the adjusting ring is rotatably connected to the front side of the support plate.

[0008] Preferably, the inner wall of the movable sleeve is threadedly connected with a spiral push rod, the rear end of the spiral push rod is fixedly connected with a detection probe and the front end is fixedly connected with an adjustment knob.

[0009] Preferably, sliding rods are slidably inserted on both left and right sides of the outer surface of the front clamping plate, the front end of the sliding rod is fixedly connected to the rear clamping plate, and the rear end of the sliding rod is fixedly connected to a connecting plate.

[0010] Preferably, sliding blocks are fixedly connected to the left and right sides of the inner wall of the support plate, and a sliding groove matched with the sliding block is formed on the outer surface of the movable sleeve.

[0011] Preferably, two sets of anti-skid pads are fixedly connected to the inner sides of the front clamping plate and the rear clamping plate. The material of the anti-skid pads is rubber and the thickness of the anti-skid pads is five millimeters.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a low-strain pile detector with the following features:

[0014] Beneficial effects:

[0015] 1. The low-strain pile foundation detector is used in combination with a front plate, a rear plate, an adjusting knob, a spiral push rod and an adjusting knob, so that the front plate and the rear plate are staggered to fix the device on the outer surface of the pile foundation, and then the adjusting knob is tightened, the adjusting knob drives the spiral push rod to rotate, and the spiral push rod drives the detection probe to move backward, and the detection probe is pressed against the outer surface of the pile foundation, so that the device can stably press the detection probe against the outer surface of the pile foundation without manual support, reducing the probability of the detection probe loosening during detection and improving the stability of the detection data.

[0016] 2. The low-strain pile foundation detector is used in combination with a front clamping plate, a rear clamping plate, staggered grooves, a movable sleeve, an external thread and an adjusting collar. When the device is fixed on the pile foundation, the adjusting collar is rotated, and the adjusting collar drives the spiral push rod to move relative to the support plate, the distance between the front clamping plate and the rear clamping plate is shortened, and the inner sides of the front clamping plate and the rear clamping plate clamp the pile foundation, so that the device can be fixed on pile foundations of different diameters, and the detection height of the detection probe can be freely selected, which is convenient for the staff to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 , Figure 3 It is a schematic diagram of the structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model.

[0020] In the figure: 1. foundation pile; 2. front splint; 3. rear splint; 4. staggered groove; 5. support rod; 6. support plate; 7. movable sleeve; 8. external thread; 9. adjusting collar; 10. screw push rod; 11. detection probe; 12. adjusting knob; 13. sliding rod; 14. connecting plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution: a low-strain pile detector, comprising a pile 1 and a front splint 2 arranged on the front side of the outer surface of the pile 1, a rear splint 3 is arranged on the rear side of the outer surface of the pile 1, the outer surfaces of the front splint 2 and the rear splint 3 are provided with staggered grooves 4, the rear splint 3 and the front splint 2 are staggered with each other through the staggered grooves 4, the left and right sides of the front side of the rear splint 3 are fixedly connected with two groups of support rods 5, the inner ends of the support rods 5 are fixedly connected with support plates 6, the front splint 2, the rear splint 3, the adjusting knob 12, the spiral push rod 10 and the adjusting knob 12 are used in coordination, so that the front splint 2 and the rear splint 3 are staggered with each other to fix the device on the outer surface of the pile 1, and then the adjusting knob 12 is tightened, the adjusting knob 12 drives the spiral push rod 10 to rotate, and the spiral push rod 10 drives the detection probe 11 to After moving, the detection probe 11 is pressed against the outer surface of the foundation pile, so that the device can stably press the detection probe 11 against the outer surface of the foundation pile 1 without manual support, reducing the probability of the detection probe 11 loosening during detection and improving the stability of the detection data. The front splint 2, the rear splint 3, the staggered groove 4, the movable sleeve 7, the external thread 8 and the adjusting ring 9 are used together, so that when the device is fixed on the foundation pile 1, the adjusting ring 9 is rotated, and the adjusting ring 9 drives the spiral push rod 10 to move relative to the support plate 6, the distance between the front splint 2 and the rear splint 3 is shortened, and the inner side surfaces of the front splint 2 and the rear splint 3 clamp the foundation pile 1, so that the device can be fixed on foundation piles 1 of different diameters, and the detection height of the detection probe 11 can be freely selected, which is convenient for the staff to use.

[0023] In the utility model, in order to realize the relative movement of the front splint 2 and the rear splint 3, a movable sleeve 7 is slidably inserted on the front side of the support plate 6, the rear end of the movable sleeve 7 is connected with the front side of the front splint 2, the outer surface of the movable sleeve 7 is provided with an external thread 8, the inner wall of the support plate 6 is provided with an avoidance groove that can avoid the external thread 8, and the rear side of the outer surface of the movable sleeve 7 is provided with an adjusting collar 9 threadedly connected with the external thread 8, and the back side of the adjusting collar 9 is rotatably connected with the front side of the support plate 6, so that the staff can make the front splint 2 and the rear splint 3 move relative to each other by rotating the adjusting collar 9.

[0024] In the utility model, in order to make the detection probe 11 press against the outer surface of the foundation pile 1, a spiral push rod 10 is threadedly connected to the inner wall of the movable sleeve 7, the rear end of the spiral push rod 10 is fixedly connected to the detection probe 11 and the front end is fixedly connected to the adjustment knob 12, so that the staff can make the detection probe 11 press against the outer surface of the foundation pile 1 by turning the adjustment knob 12.

[0025] In the utility model, in order to further enhance the stability of the movement between the front splint 2 and the rear splint 3, a sliding rod 13 is slidably installed on the left and right sides of the outer surface of the front splint 2, the front end of the sliding rod 13 is fixedly connected to the rear splint 3, and the rear end of the sliding rod 13 is fixedly connected to the connecting plate 14, so that the sliding rod 13 can stabilize the movement trajectory of the front splint 2 and the rear splint 3, thereby further enhancing the stability of the movement between the front splint 2 and the rear splint 3.

[0026] In the utility model, in order to further enhance the stability of the movement of the movable sleeve 7, sliding blocks are fixedly connected to the left and right sides of the inner wall of the support plate 6, and a sliding groove adapted to the sliding block is provided on the outer surface of the movable sleeve 7, so that the sliding block can limit the rotation of the movable sleeve 7 and stabilize its movement trajectory through the sliding groove, thereby further enhancing the stability of the movement of the movable sleeve 7.

[0027] In the utility model, in order to further enhance the stability of the device for fixation, two sets of anti-skid pads are fixedly connected to the inner sides of the front splint 2 and the rear splint 3. The material of the anti-skid pads is rubber, and the thickness of the anti-skid pads is five millimeters. By arranging the anti-skid pads, the stability of the device for fixation is further enhanced.

[0028] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0029] When in use, the front splint 2 and the rear splint 3 are put on the outside of the foundation pile 1, and a suitable placement height is selected. The adjusting ring 9 is rotated, and the adjusting ring 9 drives the spiral push rod 10 to move relative to the support plate 6. The distance between the front splint 2 and the rear splint 3 is shortened, and the inner sides of the front splint 2 and the rear splint 3 clamp the foundation pile 1. Then the adjusting knob 12 is rotated, and the adjusting knob 12 drives the spiral push rod 10 to rotate. The spiral push rod 10 drives the detection probe 11 to move backward, and the detection probe 11 is pressed against the outer surface of the foundation pile. The detection probe 11 is connected to the detection instrument, and then the subsequent low-strain detection work of the foundation pile 1 is carried out.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-strain pile detector, comprising a pile (1) and a front clamping plate (2) arranged on the front side of the outer surface of the pile (1), characterized in that: A rear splint (3) is provided on the rear side of the outer surface of the foundation pile (1); staggered grooves (4) are provided on the outer surfaces of the front splint (2) and the rear splint (3); the rear splint (3) and the front splint (2) are staggered with each other through the staggered grooves (4); two groups of support rods (5) are fixedly connected to the left and right sides of the front surface of the rear splint (3); and support plates (6) are fixedly connected to the inner ends of the support rods (5).

2. A low strain pile detector according to claim 1, characterized in that: A movable sleeve (7) is slidably inserted on the front side of the support plate (6); the rear end of the movable sleeve (7) is connected to the front side of the front clamping plate (2); an external thread (8) is provided on the outer surface of the movable sleeve (7); an adjusting sleeve (9) threadedly connected to the external thread (8) is sleeved on the rear side of the outer surface of the movable sleeve (7); and the back side of the adjusting sleeve (9) is rotatably connected to the front side of the support plate (6).

3. A low strain pile detector according to claim 2, characterized in that: The inner wall of the movable sleeve (7) is threadedly connected with a spiral push rod (10), the rear end of the spiral push rod (10) is fixedly connected with a detection probe (11) and the front end is fixedly connected with an adjustment knob (12).

4. The low-strain pile foundation detector according to claim 1, characterized in that: Sliding rods (13) are slidably inserted on both left and right sides of the outer surface of the front clamping plate (2); the front end of the sliding rod (13) is fixedly connected to the rear clamping plate (3); and the rear end of the sliding rod (13) is fixedly connected to a connecting plate (14).

5. The low-strain pile foundation detector according to claim 1, characterized in that: Sliding blocks are fixedly connected to the left and right sides of the inner wall of the support plate (6), and a sliding groove matching the sliding block is provided on the outer surface of the movable sleeve (7).

6. The low-strain pile foundation detector according to claim 1, characterized in that: Two sets of anti-skid pads are fixedly connected to the inner sides of the front clamping plate (2) and the rear clamping plate (3). The anti-skid pads are made of rubber and have a thickness of five millimeters.

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