Deep-hole double-bridge static sounding device

Abstract

The utility model provides a deep hole double-bridge static sounding device which comprises a base, a probe rod and a double-bridge probe, a guide frame is arranged at the top of the base, a lifting platform is arranged in the guide frame, one end of the probe rod is connected with the double-bridge probe, a rotating shaft is arranged on one side of the lifting platform, the free end of the rotating shaft is fixedly connected with a butt joint block, and the butt joint block is fixedly connected with the butt joint block. And an insertion hole matched with the probe rod in an inserted mode is formed in one side of the butt joint block in a penetrating mode, and the outer portion of the rotating shaft is sleeved with a locking plate. According to the utility model, the rotating shaft is arranged on one side of the lifting platform, the butt-joint block is fixedly connected to one end of the rotating shaft, and the butt-joint block is matched with the probe rod in an inserting manner, so that when the probe rod and the butt-joint block need to be inserted, only the lifting platform needs to be controlled to descend, and then the rotating shaft is rotated, so that the probe rod is in a horizontal state to be inserted into the butt-joint block; by means of the arrangement, inserting and separating operation of the probe rod and the lifting table is more convenient, operation can be conducted at a low position, and climbing operation is not needed.

Description

Technical Field

[0001] This utility model relates to the field of in-situ testing technology, specifically a deep-hole double-bridge static cone penetration test device. Background Technology

[0002] The static cone penetrometer (CPP) is suitable for in-situ testing of foundation soils in civil engineering, municipal engineering, highway engineering, and other applications in general cohesive soils, soft soils, loess, and dense sandy soils. It is used to determine vertical and horizontal variations in soil strata; perform mechanical stratification; determine the bearing capacity of natural foundations and estimate the bearing capacity of single piles; assess the likelihood of soil liquefaction; determine the undrained shear strength of soft soils; and provide calculation indicators for the bearing capacity of soft soil foundations and slope stability.

[0003] Utility model CN219710257U discloses an automated double-bridge static cone penetration tester, including a base support plate and a quick-fixing unit. The base support plate consists of two plates, with a support plate positioned between the middle of their upper surfaces. The upper surface of the support plate has symmetrical protective frames, the upper ends of which are fixedly connected to a top plate. Symmetrical screw rods are rotatably connected between the upper surface of the support plate and the bottom surface of the top plate via bearings. The two screw rods are threadedly connected to corresponding screw holes at the front and rear ends of a lifting platform. A probe rod is movably inserted into the mounting opening at the center of the lifting platform, with a double-bridge probe at its bottom end. This automated double-bridge static cone penetration tester can automatically perform static cone penetration tests, greatly reducing the operator's workload. Furthermore, it can quickly and effectively fix the probe rod before conducting the static cone penetration test, improving the overall efficiency of the static cone penetration test by reducing operator time.

[0004] However, the above-mentioned existing technology still has shortcomings in use: when conducting deep hole probing, the probe rod needs to be relatively long. In the above-mentioned existing technology, the probe rod and the lifting platform are connected by a snap-fit ​​connection. Therefore, due to the long length of the probe rod, there is a lack of operational convenience when it is inserted into the lifting platform. Simply put, when manual assistance is required to insert the probe rod and the lifting platform, the operator needs to climb up to operate the pressing column.

[0005] Therefore, this utility model provides a deep-hole double-bridge static cone penetration test device. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a deep hole double bridge static cone penetration test device to solve the problems mentioned in the background technology. This utility model has the advantages of more convenient installation and disassembly of the probe rod, no need for climbing to height, and greater safety.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a deep-hole double-bridge static cone penetrometer, comprising a base, a probe rod, and a double-bridge probe. A guide frame is mounted on the top of the base, and a lifting platform is installed within the guide frame. One end of the probe rod is connected to the double-bridge probe. A rotating shaft is mounted on one side of the lifting platform, and a docking block is fixedly connected to the free end of the rotating shaft. A through-hole for insertion and engagement with the probe rod is provided on one side of the docking block. A locking plate is fitted around the rotating shaft, and the locking plate is rotatably connected to the rotating shaft, with an elastic telescopic pin on one side. A positioning hole is provided on the outer peripheral wall of the probe rod near the top, engaging with the elastic telescopic pin.

[0008] Furthermore, the guide frame has a groove-shaped cross-section, the lifting platform is located inside the guide frame and has rollers on both sides that roll in cooperation with the opposing surfaces inside the guide frame, and the docking block is located on the outside of the guide frame.

[0009] Furthermore, a control motor is fixedly connected to the bottom of the base, and the output shaft of the control motor is fixedly connected to a lead screw that is spun through and connected to the lifting platform.

[0010] Furthermore, there are two elastic telescopic pins located on both sides of the rotating shaft. Each elastic telescopic pin has a two-section telescopic structure, and a lever is welded to the outer peripheral wall of the upper actuating rod.

[0011] Furthermore, the levers located on both sides of the rotating shaft are fixedly connected by connecting rods.

[0012] Furthermore, on the other side of the locking plate, there is an elastic telescopic support rod near both ends. The free end of the elastic telescopic support rod is provided with a roller. On one side of the lifting platform, there are positioning recesses located on the upper and lower sides of the rotating shaft. The positioning recesses and the roller are used in conjunction.

[0013] Furthermore, the positioning recess is a rectangular groove.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, a rotating shaft is set on one side of the lifting platform, and a docking block is fixedly connected to one end of the rotating shaft. The docking block and the probe are inserted and matched. When it is necessary to insert the probe and the docking block, it is only necessary to control the lifting platform to descend and then rotate the rotating shaft so that the probe is in a horizontal state to insert with the docking block. This setting makes the insertion and separation operation of the probe and the lifting platform more convenient, and can be operated at a low position without climbing.

[0016] 2. In this utility model, a locking plate is sleeved on the rotating shaft. The locking plate and the rotating shaft are rotatably engaged. The front side of the locking plate is provided with an elastic telescopic pin for locking the probe rod, and the back side is provided with an elastic telescopic support rod. The lifting platform is provided with a positioning recess that works in conjunction with the elastic telescopic support rod. When the lifting platform rises, the probe rod rises along with it and changes from horizontal to vertical. Moreover, in the vertical state, the roller provided at the moving end of the elastic telescopic support rod will roll into the positioning recess. This arrangement allows the probe rod to be stably in a vertical state, which is convenient for deep hole probing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a deep-hole double-bridge static cone penetration test device according to the present invention;

[0018] Figure 2 for Figure 1 The main view;

[0019] Figure 3 for Figure 1 A magnified diagram of the "a" in the middle section.

[0020] In the diagram: 1. Base; 2. Probe rod; 21. Positioning hole; 3. Double-bridge probe; 4. Guide frame; 5. Lifting platform; 51. Roller; 52. Positioning recess; 6. Rotating shaft; 7. Connecting block; 71. Insertion hole; 8. Locking plate; 9. Elastic telescopic pin; 91. Action rod; 911. Toggle lever; 101. Control motor; 102. Lead screw; 103. Elastic telescopic support rod; 104. Roller; 105. Connecting rod. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 3 This utility model provides a technical solution: a deep hole double-bridge static cone penetration test device, including a base 1, a probe 2 and a double-bridge probe 3. The structure of the base 1 can adopt the structure in the patent documents mentioned in the background art. A guide frame 4 is provided on the top of the base 1. A lifting platform 5 is provided inside the guide frame 4. The function of the lifting platform 5 is to drive the probe 2 to move up and down. In a specific implementation, it is preferred that the cross-section of the guide frame 4 is groove-shaped, and the lifting platform 5 is located inside the guide frame 4 and has rollers 51 on both sides that roll in cooperation with the opposite surface inside the guide frame 4.

[0023] Furthermore, a control motor 101 is fixedly connected to the bottom of the base 1. The output shaft of the control motor 101 is fixedly connected to a lead screw 102 that is screwed through and engaged with the lifting platform 5. The control motor 101 provides driving force to the rotation of the lead screw 102. The rotation of the lead screw 102 drives the lifting platform 5 to move up and down by engaging.

[0024] One end of the probe rod 2 is connected to a double-bridge probe 3. A rotating shaft 6 is provided on one side of the lifting platform 5. A docking block 7 is fixedly connected to the free end of the rotating shaft 6. The docking block 7 is located on the outside of the guide frame 4. A through hole 71 is provided on one side of the docking block 7 to engage with the probe rod 2. A locking plate 8 is sleeved on the outside of the rotating shaft 6. The locking plate 8 is rotatably connected to the rotating shaft 6 and has an elastic telescopic pin 9 on one side. A positioning hole 21 is provided on the outer peripheral wall of the probe rod 2 near the top and engages with the elastic telescopic pin 9. The elastic telescopic pin 9 can be a two-section telescopic pin structure with built-in support springs. When the probe rod 2 is inserted into the through hole 71 and the elastic telescopic pin 9 is inserted into the positioning hole 21, the probe rod 2 and the docking block 7 are in a fixed connection state. Due to the setting of the rotating shaft 6, when the lifting platform 5 is in the lowest position, the probe rod 2 is in a horizontal state. This setting makes it convenient for the operator to connect and disconnect the probe rod 2 and the docking block 7 on the base 1.

[0025] Furthermore, there are two elastic telescopic pins 9 located on both sides of the rotating shaft 6. The elastic telescopic pin 9 is a two-section telescopic structure, and a lever 911 is welded to the outer peripheral wall of the upper actuating rod 91. The function of this lever 911 is to facilitate the operator to control the actuating rod 91 to be pulled out from the positioning hole 21 by pressing. Moreover, the setting of two elastic telescopic pins 9 makes the connection between the probe rod 2 and the docking block 7 more reliable and stable.

[0026] In use, the levers 911 located on both sides of the rotating shaft 6 are fixedly connected by the connecting rod 105. By pressing the connecting rod 105, the operator can control the action rods 91 on the two elastic telescopic pins 9 to simultaneously disengage from the positioning hole 21, further improving the convenience of docking and separating the probe 2 and the docking block 7.

[0027] In this embodiment, on the other side of the locking plate 8, there is an elastic telescopic support rod 103 near both ends. The elastic telescopic support rod 103 also adopts a telescopic rod structure with two telescopic built-in support springs. The free end of the elastic telescopic support rod 103 is provided with a roller 104. The side of the lifting platform 5 is provided with positioning recesses 52 located on the upper and lower sides of the rotating shaft 6. The positioning recesses 52 and the roller 104 are used in conjunction. That is to say, when the roller 104 rides on the positioning recesses 52, the roller 104 is in a state of near-locking. At the same time, the locking plate 8 will remain in a vertical state, thereby making the probe rod 2 in a vertical state, which facilitates the stable descent of the probe rod 2 for probing operations.

[0028] Working principle: When the probe rod 2 needs to be installed, the control screw 102 is rotated to control the lifting platform 5 to lower to the lowest position. Then, the longer probe rod 2 is placed horizontally on the base 1. The end of the probe rod 2 away from the double bridge probe 3 is inserted into the insertion hole 71. Then, the connecting rod 105 is manually pressed while the locking plate 8 is rotated so that the action rod 91 on the elastic telescopic pin 9 is aligned with the positioning hole 21. Then, the connecting rod 105 is released, and the action rod 91 is inserted into the positioning hole 21. At this time, the probe rod 2 and the docking block 7 are connected. Then, the lifting platform 5 is raised. At the same time, the probe rod 2 and the double bridge probe 3 are held to assist the movement of the probe rod 2. During the rising process, the probe rod 2 will change from horizontal to vertical. At the same time, the roller 104 will roll along the lifting platform 5. When the roller 104 rolls on the positioning recess 52, the locking plate 8 is in a near-locked state under the pressure of the elastic telescopic support rod 103. At this time, the probe rod 2 is stably in a vertical state. Then, the lifting platform 5 is lowered to perform the probing operation. When it is necessary to separate probe 2, push probe 2 laterally to make roller 104 leave positioning recess 52, then control the lifting platform 5 to descend, and then reverse the operation as mentioned above to separate probe 2 and docking block 7.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A deep-hole double-bridge static cone penetration test device, comprising a base (1), a probe rod (2), and a double-bridge probe (3), wherein a guide frame (4) is provided on the top of the base (1), a lifting platform (5) is provided inside the guide frame (4), and one end of the probe rod (2) is connected to the double-bridge probe (3), characterized in that, A rotating shaft (6) is provided on one side of the lifting platform (5). A docking block (7) is fixedly connected to the free end of the rotating shaft (6). A insertion hole (71) for inserting and engaging with the probe (2) is provided on one side of the docking block (7). A locking plate (8) is sleeved on the outside of the rotating shaft (6). The locking plate (8) is rotatably connected to the rotating shaft (6) and an elastic telescopic pin (9) is provided on one side of it. A positioning hole (21) is provided on the outer peripheral wall of the probe (2) near the top and for inserting and engaging with the elastic telescopic pin (9).

2. The deep-hole double-bridge static cone penetration test device according to claim 1, characterized in that: The guide frame (4) has a groove-shaped cross section. The lifting platform (5) is located inside the guide frame (4) and has rollers (51) on both sides that roll in cooperation with the opposite surface inside the guide frame (4). The docking block (7) is located outside the guide frame (4).

3. The deep-hole double-bridge static cone penetration test device according to claim 2, characterized in that: The bottom of the base (1) is fixedly connected to a control motor (101), and the output shaft of the control motor (101) is fixedly connected to a lead screw (102) that is screwed through and connected to the lifting platform (5).

4. The deep-hole double-bridge static cone penetration test device according to claim 1, characterized in that: The number of elastic telescopic pins (9) is two and they are located on both sides of the rotating shaft (6). The elastic telescopic pins (9) are two-section telescopic structures and the outer peripheral wall of the upper action rod (91) is welded with a lever (911).

5. A deep-hole double-bridge static cone penetration test device according to claim 4, characterized in that: The levers (911) located on both sides of the rotating shaft (6) are fixedly connected by connecting rods (105).

6. The deep-hole double-bridge static cone penetration test device according to claim 1, characterized in that: On the other side of the locking plate (8), there is an elastic telescopic support rod (103) near both ends. The free end of the elastic telescopic support rod (103) is provided with a roller (104). On one side of the lifting platform (5), there are positioning recesses (52) located on the upper and lower sides of the rotating shaft (6). The positioning recesses (52) and the roller (104) are used together.

7. A deep-hole double-bridge static cone penetration test device according to claim 6, characterized in that: The positioning recess (52) is a rectangular sink.

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