Device for detecting thickness of sediment at bottom of socketed pile

Abstract

The utility model provides a device for detecting the thickness of sediment at the bottom of a socketed pile. The device comprises a bottom plate, a support frame, a sleeve lifting driving mechanism, a sleeve assembly, an inserted link assembly and an inserted link lifting driving mechanism, the insertion rod assembly is slidably assembled in a cavity of the sleeve assembly, and the insertion rod lifting driving mechanism is used for driving the insertion rod assembly to ascend and descend. The sediment thickness measuring device has the advantages that the sediment thickness can be directly measured only through one-time measurement, errors caused by multiple times of measurement are avoided, and therefore the sediment thickness detection precision is improved; and the screw rod is arranged at the upper end of the insertion rod and matched with the threaded hole of the fixing rod, so that the insertion rod is convenient to disassemble and replace. And an adjusting gasket is arranged between the insertion rod and the fixed rod, so that zero calibration processing on the detection device is facilitated, and the detection precision is ensured. And the sleeve and the chassis are arranged to be detachable, so that the insertion rod assembly is convenient to mount and dismount, and meanwhile, the interior of the sleeve is also convenient to clean.

Description

Technical Field

[0001] The utility model belongs to the technical field of rock-embedded pile construction, and in particular relates to a device for detecting the thickness of sediment at the bottom of a rock-embedded pile. Background Art

[0002] When erecting an elevated bridge or elevated track, it is necessary to ensure its stability and safety by driving piles; the piles include rock-embedded piles, which are buried deep and have a more stable foundation; however, when constructing rock-embedded piles, it is necessary to ensure that the sediment in the rock hole meets the design requirements. Excessively thick sediment will affect the mechanical properties of the rock-embedded piles; therefore, the thickness of the sediment in the rock hole needs to be tested before casting the rock-embedded piles. The existing sediment thickness detection method is: use a measuring rope in conjunction with a hanging hammer to detect the sediment thickness. First, it is necessary to gently lower it, and the measured depth is used as the top surface depth of the sediment. Then shake it and lower it, and the measured depth is used as the bottom depth of the hole. The difference between the two is the sediment thickness. This method requires measuring two depth values, and the measurement is cumbersome; in addition, since errors will be introduced each time the depth is measured, the two depth measurements will add up to a larger error, thereby reducing the measurement accuracy. Utility Model Content

[0003] In view of the defects in the prior art, the utility model provides a device for detecting the thickness of sediment at the bottom of a rock-embedded pile, which can effectively solve the above problems.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The utility model provides a device for detecting sediment thickness at the bottom of a rock-embedded pile, comprising a bottom plate (1), a support frame (2), a casing lifting and driving mechanism, a casing assembly, a rod assembly (7) and a rod lifting and driving mechanism;

[0006] The support frame (2) is arranged at the upper end of the base plate (1); the sleeve lifting drive mechanism is installed on the top of the support frame (2); the sleeve assembly is arranged vertically and connected to the sleeve lifting drive mechanism, and the sleeve assembly is driven to perform lifting movement through the sleeve lifting drive mechanism; the insertion rod assembly (7) is slidably assembled in the cavity of the sleeve assembly, the bottom end of the insertion rod assembly (7) passes through the bottom surface of the sleeve assembly, and the top of the insertion rod assembly (7) passes through the top surface of the sleeve assembly, and the insertion rod lifting drive mechanism is used to drive the insertion rod assembly (7) to perform lifting movement.

[0007] Preferably, the casing lifting drive mechanism is a hydraulic cylinder (3), or a telescopic rod type linear drive component, or a cylinder type linear drive component.

[0008] Preferably, the sleeve assembly comprises a mounting plate (4), a sleeve (5) and a chassis (6); the mounting plate (4) is fixedly mounted on the top surface of the sleeve (5), and the chassis (6) is fixedly mounted on the bottom surface of the sleeve (5).

[0009] Preferably, the sleeve (5) and the chassis (6) are threadedly connected; the diameter of the chassis (6) is larger than the diameter of the sleeve (5); and a through hole (61) is provided at the center of the chassis (6).

[0010] Preferably, an internal thread (51) is provided at the lower end of the sleeve (5), and an external threaded tube (62) is provided at the center of the chassis (6), and the external threaded tube (62) cooperates with the internal thread (51).

[0011] Preferably, the insertion rod assembly (7) comprises a fixing rod (71), a disc (72), a guide rod (73) and an insertion rod (74);

[0012] The fixing rod (71) is arranged in the inner cavity of the sleeve (5); the disc (72) is fixedly mounted on the upper end of the fixing rod (71); the disc (72) is slidably connected to the inner cavity of the sleeve (5); the guide rod (73) is fixedly mounted on the upper end of the disc (72); the guide rod (73) is located above the sleeve (5); a scale line (731) is arranged on the guide rod (73) along the vertical direction; the insertion rod (74) is coaxially mounted on the lower end of the fixing rod (71), and the bottom end of the insertion rod (74) passes through the through hole (61) of the chassis (6).

[0013] Preferably, when the bottom end of the insertion rod (74) is flush with the bottom surface of the chassis (6), the zero mark of the scale line (731) is flush with the upper end surface of the sleeve (5).

[0014] Preferably, a threaded hole is provided at the lower end of the fixing rod (71), and a screw rod (741) is provided at the upper end of the insertion rod (74), and the screw rod (741) cooperates with the threaded hole to realize a threaded connection between the insertion rod (74) and the fixing rod (71).

[0015] Preferably, an adjustment gasket (75) is provided between the insertion rod (74) and the fixing rod (71).

[0016] Preferably, the rod lifting and lowering driving mechanism is a screw (8); the screw (8) is rotatably installed at the top of the sleeve assembly, and the screw (8) passes through the disc (72) in the vertical direction and is threadedly connected to the disc (72); the thread lead angle of the screw (8) is smaller than the equivalent friction angle.

[0017] The device for detecting the thickness of sediment at the bottom of a rock-embedded pile provided by the utility model has the following advantages:

[0018] 1. Only one measurement is needed to directly measure the thickness of the sediment, avoiding the error introduced by multiple measurements, thereby improving the accuracy of sediment thickness detection;

[0019] 2. By arranging a screw rod at the upper end of the insertion rod to cooperate with the threaded hole of the fixing rod, it is convenient to disassemble and replace the insertion rod.

[0020] 3. By setting an adjustment gasket between the insertion rod and the fixed rod, it is convenient to calibrate the detection device to zero and ensure the detection accuracy.

[0021] 4. The sleeve and the chassis are set to be detachable, which is convenient for installation and removal of the plunger assembly and also for cleaning the inside of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the device for detecting the thickness of sediment at the bottom of a rock-embedded pile provided by the utility model;

[0023] Figure 2 It is a schematic diagram of the casing structure provided by the utility model;

[0024] Figure 3 It is a schematic diagram of the chassis structure provided by the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the plunger assembly provided by the utility model;

[0026] Figure 5 It is a schematic diagram of the plugging rod structure provided by the utility model. DETAILED DESCRIPTION

[0027] 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 of 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.

[0028] like Figure 1 As shown, the utility model provides a device for detecting sediment thickness at the bottom of a rock-embedded pile, comprising a bottom plate 1, a support frame 2, a casing lifting and driving mechanism, a casing assembly, a plunger assembly 7 and a plunger lifting and driving mechanism;

[0029] At least four universal wheels are provided at the lower end of the bottom plate 1 to facilitate the movement of the bottom plate 1 and thus the movement of the detection device, so as to facilitate the detection of the sediment thickness at different positions.

[0030] A support frame 2 is set at the upper end of the base plate 1; a sleeve lifting drive mechanism is installed on the top of the support frame 2; the sleeve assembly is vertically arranged and connected to the sleeve lifting drive mechanism, and the sleeve assembly is driven to perform lifting movement through the sleeve lifting drive mechanism; a rod assembly 7 is slidably assembled in the cavity of the sleeve assembly, the bottom end of the rod assembly 7 passes through the bottom surface of the sleeve assembly, and the top of the rod assembly 7 passes through the top surface of the sleeve assembly, and the rod lifting drive mechanism is used to drive the rod assembly 7 to perform lifting movement.

[0031] The utility model does not limit the specific form of the casing lifting drive mechanism, including but not limited to the hydraulic cylinder 3, telescopic rod type linear drive components, or cylinder type linear drive components, etc., as long as it can realize the lifting movement of the casing assembly.

[0032] As a specific embodiment, the sleeve assembly includes a mounting plate 4, a sleeve 5 and a bottom plate 6; the mounting plate 4 is fixedly mounted on the top surface of the sleeve 5, and the bottom surface of the sleeve 5 is fixedly mounted on the bottom plate 6. The sleeve 5 and the bottom plate 6 are threadedly connected; the diameter of the bottom plate 6 is larger than the diameter of the sleeve 5; and a through hole 61 is provided in the center of the bottom plate 6. When in use, the bottom plate 6 contacts the upper surface of the sediment.

[0033] like Figure 4 As shown, the plunger assembly 7 includes a fixed rod 71, a disc 72, a guide rod 73 and a plunger 74; the fixed rod 71 is arranged in the inner cavity of the sleeve 5; the upper end of the fixed rod 71 is fixedly installed with a disc 72; the disc 72 is slidably connected with the inner cavity of the sleeve 5; the upper end of the disc 72 is fixedly installed with a guide rod 73; the cross section of the guide rod 73 is rectangular; the guide rod 73 is located above the sleeve 5; the guide rod 73 is provided with a scale line 731 along the vertical direction; the lower end of the fixed rod 71 is coaxially installed with the plunger 74, and the bottom end of the plunger 74 passes through the through hole 61 of the chassis 6. The bottom of the plunger 74 is provided with a tip, and the plunger 74 can penetrate the chassis 6 and be inserted into the sediment; wherein, when the bottom end of the plunger 74 is flush with the bottom surface of the chassis 6, the zero scale of the scale line 731 is flush with the upper end surface of the sleeve 5.

[0034] In this embodiment, a threaded hole is formed at the lower end of the fixing rod 71. Figure 5 As shown, a screw 741 is provided at the upper end of the insertion rod 74, and the screw 741 cooperates with the threaded hole to realize a threaded connection between the insertion rod 74 and the fixed rod 71, thereby realizing a detachable connection between the insertion rod 74 and the fixed rod 71, which is convenient for disassembly and replacement of the insertion rod 74.

[0035] In addition, an adjusting gasket 75 is provided between the insertion rod 74 and the fixing rod 71. Since the tip of the insertion rod 74 will be worn out due to long-term use, the detection device needs to be calibrated before detection, that is, when the lower end of the insertion rod 74 is flush with the lower end surface of the disc 72, it is necessary to ensure that the zero scale of the scale line 731 is flush with the upper end surface of the sleeve 5, so as to ensure the detection accuracy of the sediment thickness; for this reason, for the worn insertion rod 74, the thickness of the adjusting gasket 75 can be controlled to achieve zero calibration.

[0036] As a specific implementation, the rod lifting drive mechanism adopts a screw 8; the screw 8 is rotatably installed on the top of the sleeve assembly, and the screw 8 passes through the disc 72 in the vertical direction and is threadedly connected to the disc 72; by rotating the screw 8, the lifting and lowering movement of the rod 74 can be controlled, so that the rod 74 is inserted into the sediment; it should be emphasized that the screw 8 has a self-locking ability, that is, the thread lead angle of the screw 8 is less than the equivalent friction angle, so as to ensure that the height position of the rod 74 remains stable after adjustment.

[0037] In the present application, for the sleeve assembly, the sleeve 5 and the chassis 6 are detachably mounted. Figure 2 As shown, the lower end of the sleeve 5 is provided with an internal thread 51, as shown in FIG. Figure 3 As shown, an external threaded tube 62 is provided at the center of the chassis 6 , and the external threaded tube 62 cooperates with the internal thread 51 , thereby realizing a detachable connection between the chassis 6 and the sleeve 5 , so as to facilitate the installation and removal of the plunger assembly 7 .

[0038] Of course, the fixing method between the sleeve 5 and the chassis 6 includes but is not limited to the structure of the external threaded tube 62 in this embodiment. In some embodiments, the chassis 6 and the sleeve 5 can also be set to be bolted, and a detachable fixed connection between the two can also be achieved.

[0039] In the present application, the detachable installation method between the sleeve 5 and the chassis 6 has the following advantages: the chassis 6 is provided with a through hole 61, and the insertion rod 74 is in clearance with the through hole 61, and the insertion rod 74 can pass through the through hole 61 and enter into the sediment; after long-term use, some sediment will enter into the interior of the sleeve 5 from the gap between the insertion rod 74 and the through hole 61, and the detachable fixation between the chassis 6 and the sleeve 5 is just convenient for cleaning the interior of the sleeve 5; at the same time, the disc 72 cooperates with the inner cavity of the sleeve 5, and by controlling the insertion rod assembly 7 to descend, the disc 72 can discharge the sediment inside the sleeve 5.

[0040] The utility model provides a device for detecting the thickness of sediment at the bottom of a rock-embedded pile, and its working principle is as follows:

[0041] A support frame 2 is arranged on the bottom plate 1, a mounting plate 4 that can be raised and lowered is arranged on the support frame 2, a sleeve 5 is fixed on the mounting plate 4, the lower end of the sleeve 5 is fixed to a chassis 6 that contacts the surface of the sediment, an insertion rod assembly 7 is arranged in the sleeve 5, and a screw rod 8 is arranged to drive the insertion rod assembly 7 to rise and fall; in addition, when the lower end of the insertion rod 74 is flush with the lower end surface of the chassis 6, the zero scale of the scale line 731 is flush with the upper end surface of the sleeve 5.

[0042] During the detection process, the hydraulic cylinder 3 is first controlled to make the chassis 6 contact the upper surface of the sediment, and then the screw rod 8 is controlled to rotate to realize the descent of the insertion rod 74 until the insertion rod 74 moves to the bottom of the sediment. At this time, the scale on the scale line 731 is read, which is the thickness of the sediment.

[0043] The utility model provides a device for detecting sediment thickness at the bottom of a rock-embedded pile, which has the following advantages:

[0044] 1. Only one measurement is needed to directly measure the thickness of the sediment, avoiding the error introduced by multiple measurements, thereby improving the accuracy of sediment thickness detection;

[0045] 2. By arranging a screw rod at the upper end of the insertion rod to cooperate with the threaded hole of the fixing rod, it is convenient to disassemble and replace the insertion rod.

[0046] 3. By setting an adjustment gasket between the insertion rod and the fixed rod, it is convenient to calibrate the detection device to zero and ensure the detection accuracy.

[0047] 4. The sleeve and the chassis are set to be detachable, which is convenient for installation and removal of the plunger assembly and also for cleaning the inside of the sleeve.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A device for detecting sediment thickness at the bottom of a rock-embedded pile, characterized in that: It comprises a base plate (1), a support frame (2), a sleeve lifting and driving mechanism, a sleeve assembly, a plunger assembly (7) and a plunger lifting and driving mechanism; The support frame (2) is arranged at the upper end of the base plate (1); the sleeve lifting drive mechanism is installed on the top of the support frame (2); the sleeve assembly is arranged vertically and connected to the sleeve lifting drive mechanism, and the sleeve assembly is driven to perform lifting movement through the sleeve lifting drive mechanism; the insertion rod assembly (7) is slidably assembled in the cavity of the sleeve assembly, the bottom end of the insertion rod assembly (7) passes through the bottom surface of the sleeve assembly, and the top of the insertion rod assembly (7) passes through the top surface of the sleeve assembly, and the insertion rod lifting drive mechanism is used to drive the insertion rod assembly (7) to perform lifting movement.

2. A device for detecting sediment thickness at the bottom of a rock-socketed pile according to claim 1, characterized in that: The casing lifting drive mechanism is a hydraulic cylinder (3), or a telescopic rod type linear drive component, or a cylinder type linear drive component.

3. The device for detecting sediment thickness at the bottom of a rock-socketed pile according to claim 1, characterized in that: The sleeve assembly comprises a mounting plate (4), a sleeve (5) and a chassis (6); the mounting plate (4) is fixedly mounted on the top surface of the sleeve (5), and the chassis (6) is fixedly mounted on the bottom surface of the sleeve (5).

4. A device for detecting sediment thickness at the bottom of a rock-socketed pile according to claim 3, characterized in that: The sleeve (5) and the chassis (6) are threadedly connected; the diameter of the chassis (6) is larger than the diameter of the sleeve (5); and a through hole (61) is provided at the center of the chassis (6).

5. The device for detecting sediment thickness at the bottom of a rock-socketed pile according to claim 4, characterized in that: An internal thread (51) is arranged at the lower end of the sleeve (5), and an external threaded tube (62) is arranged at the center of the chassis (6), and the external threaded tube (62) cooperates with the internal thread (51).

6. The device for detecting sediment thickness at the bottom of a rock-socketed pile according to claim 4, characterized in that: The insertion rod assembly (7) comprises a fixing rod (71), a disc (72), a guide rod (73) and an insertion rod (74); The fixing rod (71) is arranged in the inner cavity of the sleeve (5); the disc (72) is fixedly mounted on the upper end of the fixing rod (71); the disc (72) is slidably connected to the inner cavity of the sleeve (5); the guide rod (73) is fixedly mounted on the upper end of the disc (72); the guide rod (73) is located above the sleeve (5); a scale line (731) is arranged on the guide rod (73) along the vertical direction; the insertion rod (74) is coaxially mounted on the lower end of the fixing rod (71), and the bottom end of the insertion rod (74) passes through the through hole (61) of the chassis (6).

7. A device for detecting sediment thickness at the bottom of a rock-socketed pile according to claim 6, characterized in that: When the bottom end of the insertion rod (74) is flush with the bottom surface of the chassis (6), the zero mark of the scale line (731) is flush with the upper end surface of the sleeve (5).

8. The device for detecting sediment thickness at the bottom of a rock-socketed pile according to claim 6, characterized in that: A threaded hole is provided at the lower end of the fixing rod (71), and a screw rod (741) is provided at the upper end of the insertion rod (74). The screw rod (741) cooperates with the threaded hole to achieve a threaded connection between the insertion rod (74) and the fixing rod (71).

9. The device for detecting sediment thickness at the bottom of a rock-socketed pile according to claim 6, characterized in that: An adjustment gasket (75) is provided between the insertion rod (74) and the fixing rod (71).

10. The device for detecting sediment thickness at the bottom of a rock-socketed pile according to claim 6, characterized in that: The rod lifting and lowering driving mechanism is a screw rod (8); the screw rod (8) is rotatably mounted on the top of the sleeve assembly, the screw rod (8) penetrates the disc (72) in the vertical direction and is threadedly connected to the disc (72); the thread lead angle of the screw rod (8) is smaller than the equivalent friction angle.

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