In-situ testing device for geotechnical engineering investigation

Abstract

The utility model discloses an in-situ testing device for geotechnical engineering investigation, which relates to the technical field of drilling and comprises an upper fixing seat, a lower fixing seat and a free drop hammer oil cylinder, the free drop hammer oil cylinder is a double-rod hydraulic oil cylinder and is connected with a lifting frame, a striking device is mounted on the lifting frame, and the striking device is connected with the free drop hammer oil cylinder. An upper guide seat and a lower guide seat are installed at the upper end and the lower end of one side face of the lifting frame respectively, guide holes are formed in the upper guide seat and the lower guide seat respectively, the upper guide seat is installed on a piston rod of the free drop hammer oil cylinder in a sliding mode, and the lower guide seat is installed on a cylinder barrel of the free drop hammer oil cylinder. The whole operation process is simple, excessive manual operation is not needed, time and labor are saved, safety and reliability are achieved, and the problems that in the traditional operation process, hoisting installation needs to be achieved through a winch, manual rope hanging and operation of the winch for hoisting installation are tedious, safety is poor, and the efficiency of the construction process is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling, in particular to an in-situ testing device for geotechnical engineering investigation. Background Art

[0002] In-situ testing is a test of the properties of rock and soil at its original location or basically in its in-situ state and stress conditions. During the engineering geological drilling process, according to standard requirements, dynamic sounding tests are required on the geological conditions at different depths, and the geological conditions are analyzed based on the number of sounding hammer blows.

[0003] In the existing testing device, when performing the testing operation, the free-falling weight is mainly lifted by manually operating the winch, installed at the working position, and then the testing operation is performed.

[0004] The existing manual installation process through winching is cumbersome and has poor safety, which also affects the efficiency of on-site operations. Therefore, the utility model provides an in-situ testing device for geotechnical engineering investigation. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an in-situ testing device for geotechnical engineering investigation, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a geotechnical engineering survey in-situ testing device, comprising an upper fixed seat and a lower fixed seat installed on a drilling tower, a free-fall hammer oil cylinder is installed between the upper fixed seat and the lower fixed seat, and the free-fall hammer oil cylinder is a double-rod hydraulic oil cylinder, and the two ends of the piston rod of the free-fall hammer oil cylinder are respectively fixed to the upper fixed seat and the lower fixed seat;

[0007] The free-fall hammer cylinder is connected to a lifting frame, on which a striking device is installed, an upper guide seat and a lower guide seat are respectively installed at the upper and lower ends of one side surface of the lifting frame, guide holes are provided on the upper guide seat and the lower guide seat, the upper guide seat is slidably installed on the piston rod of the free-fall hammer cylinder, and the lower guide seat is installed on the cylinder barrel of the free-fall hammer cylinder.

[0008] As a further technical solution of the utility model, copper sleeves are provided in the guide holes on the upper guide seat and the lower guide seat, and the bottom of the cylinder barrel of the free fall hammer cylinder is provided with a step surface matching the bottom of the guide hole on the lower guide seat.

[0009] As a further technical solution of the utility model, the striking device includes a guide rod fixedly installed on one side of the lifting frame, a test hammer is slidably connected to the guide rod, and a drill rod joint is connected to the bottom end of the guide rod, and a shell is provided on one side of the lifting frame outside the test hammer and the guide rod.

[0010] As a further technical solution of the utility model, the striking device also includes a driving motor installed at the upper end of the lifting frame, and chain gears are installed at the output end of the driving motor and the lower end of the lifting frame. A chain is commonly connected between the two chain gears, and two hooks are installed at both ends of the chain.

[0011] As a further technical solution of the utility model, a latch is installed on the lower fixed seat, a pin hole seat is installed at the bottom end of the lifting frame corresponding to the latch, and a pin hole is installed on the pin hole seat, and the latch is slidably inserted into the pin hole of the pin hole seat.

[0012] The utility model provides an in-situ testing device for geotechnical engineering investigation, which has the following beneficial effects compared with the prior art:

[0013] This design is an in-situ testing device for geotechnical engineering investigation. It uses a double-rod hydraulic cylinder in conjunction with a lifting frame to lift the striking device. It solves the problem that in traditional operations, it is necessary to lift and install through a winch, which leads to the cumbersome manual hanging of ropes and operation of the winch for lifting and installation, poor safety, and low efficiency in the construction process. This design uses a free-fall hammer cylinder for lifting and installation. The entire operation process is simple and does not require too much manual operation. It saves time and effort and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an in-situ testing device for geotechnical engineering investigation;

[0015] Figure 2 It is a schematic diagram of the structure of a lifting frame after it is raised in an in-situ testing device for geotechnical engineering investigation;

[0016] Figure 3 It is a front view of an in-situ testing device for geotechnical engineering investigation;

[0017] Figure 4 The present invention is a schematic diagram of the connection between a striking device and a free-fall hammer cylinder in an in-situ testing device for geotechnical engineering investigation.

[0018] In the figure: 1, upper fixing seat; 2, lower fixing seat; 3, lifting frame; 31, housing; 32, drill pipe joint; 33, test hammer; 34, guide rod; 35, drive motor; 36, chain; 37, hook; 38, chain gear; 4, piston rod; 5, cylinder; 6, upper guide seat; 7, lower guide seat; 8, latch; 81, pin hole seat. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides a technical solution for an in-situ testing device for geotechnical engineering investigation: an in-situ testing device for geotechnical engineering investigation, comprising an upper fixing seat 1 and a lower fixing seat 2 installed on a drilling tower, a free-fall hammer oil cylinder is installed between the upper fixing seat 1 and the lower fixing seat 2, and the free-fall hammer oil cylinder is a double-rod hydraulic oil cylinder, that is, a cylinder barrel 5 can be moved on a piston rod 4. Both ends of the piston rod 4 of the free-fall hammer oil cylinder are respectively fixed to the upper fixing seat 1 and the lower fixing seat 2, and the free-fall hammer oil cylinder is fixed by the upper fixing seat 1 and the lower fixing seat 2, so that the free-fall hammer oil cylinder can drive the striking device to be lifted to a suitable height position;

[0021] A lifting frame 3 is connected to the free-fall hammer cylinder, and a striking device is installed on the lifting frame 3. An upper guide seat 6 and a lower guide seat 7 are respectively installed on the upper and lower ends of one side surface of the lifting frame 3. Guide holes are provided on the upper guide seat 6 and the lower guide seat 7. The upper guide seat 6 is slidably installed on the piston rod 4 of the free-fall hammer cylinder, and the lower guide seat 7 is installed on the cylinder barrel 5 of the free-fall hammer cylinder. Copper sleeves are provided in the guide holes on the upper guide seat 6 and the lower guide seat 7. A step surface matching the bottom of the guide hole on the lower guide seat 7 is provided at the bottom of the cylinder barrel 5 of the free-fall hammer cylinder. During the lifting process of the free-fall hammer cylinder, the cylinder barrel 5 moves upward to lift the striking device to a certain height through the step surface. The free-fall hammer cylinder plays a dual role of lifting and guiding. It should be noted that the lower guide seat 7 can also adopt two semicircular design mechanisms, which can be easily disassembled and sleeved on the cylinder barrel 5 to facilitate on-site installation.

[0022] The striking device includes a guide rod 34 fixedly installed on one side of the lifting frame 3, a test hammer 33 is slidably connected to the guide rod 34, and a drill pipe joint 32 is connected to the bottom end of the guide rod 34. A shell 31 is provided on one side of the lifting frame 3 outside the test hammer 33 and the guide rod 34. The shell 31 can protect the test hammer 33 and the guide rod 34, and the guide rod 34 can limit the lifting path of the test hammer 33 to ensure accuracy during work.

[0023] The striking device also includes a driving motor 35 installed at the upper end of the lifting frame 3. Chain gears 38 are installed at the output end of the driving motor 35 and the lower end of the lifting frame 3. A chain 36 is commonly connected between the two chain gears 38. Two hooks 37 are installed at both ends of the chain 36. The hooks 37 correspond to the test hammer 33. When the driving motor 35 drives the chain gear 38 to rotate, it can drive the chain to rotate, and then drive the hook 37 to rise. During the rising process, the test hammer 33 can be lifted by the hook 37. After lifting to the top, the hook 37 continues to be driven by the chain. When the hook 37 is separated from the test hammer 33, the test hammer 33 moves downward along the guide rod 34 to realize the hammering operation.

[0024] A latch 8 is installed on the lower fixing seat 2, and a pin hole seat 81 is installed at the bottom end of the lifting frame 3 corresponding to the latch 8, and a pin hole is installed on the pin hole seat 81. The latch 8 is slidably inserted into the pin hole of the pin hole seat 81. The latch 8 is used to fix the test device, that is, to fix the position of the lifting frame 3 and the striking device. When not in use, the latch 8 is inserted into the pin hole to fix the striking device to prevent it from rotating.

[0025] The working principle of the utility model is as follows:

[0026] Step 1: Install the test device on the upper side of the derrick boom using the upper fixing seat 1 and the lower fixing seat 2. When not in use, insert the latch 8 into the pin hole to lock it.

[0027] Step 2: When testing is required, the latch 8 is released from the pin hole, the free-fall hammer cylinder is filled with oil, and the cylinder barrel 5 moves upward to drive the lifting frame 3 and the striking device to a suitable height position. During the lifting process, the piston rod 4 of the free-fall hammer cylinder acts as a guide.

[0028] Step 3: Further, by rotating, the lifting frame 3 and the striking device are rotated to a suitable angle (such as Figure 2 As shown), align with the center of the drill pipe.

[0029] Step 4: Connect the test working rod to the drill rod joint 32 at the bottom of the striking device, and then the striking device starts to work. When the free-fall hammer cylinder retracts to the initial bottom position, the striking device completes the striking operation. After releasing the striking drill rod, the free-fall hammer cylinder lifts the striking device to the top.

[0030] Step 5: After the striking device is rotated to its original position, the test oil cylinder is lowered to the bottom position and reset, and the test device is fixed with the latch 8 to complete the operation.

[0031] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An in-situ testing device for geotechnical engineering investigation, comprising an upper fixing seat (1) and a lower fixing seat (2) mounted on a drilling tower, characterized in that: A free-fall hammer oil cylinder is installed between the upper fixed seat (1) and the lower fixed seat (2), and the free-fall hammer oil cylinder is a double-rod hydraulic oil cylinder, and both ends of the piston rod (4) of the free-fall hammer oil cylinder are respectively fixed to the upper fixed seat (1) and the lower fixed seat (2); The free-fall hammer oil cylinder is connected to a lifting frame (3), and a striking device is installed on the lifting frame (3). An upper guide seat (6) and a lower guide seat (7) are respectively installed at the upper and lower ends of a side surface of the lifting frame (3). Guide holes are provided on the upper guide seat (6) and the lower guide seat (7). The upper guide seat (6) is slidably installed on the piston rod (4) of the free-fall hammer oil cylinder, and the lower guide seat (7) is installed on the cylinder barrel (5) of the free-fall hammer oil cylinder.

2. The in-situ testing device for geotechnical engineering investigation according to claim 1, characterized in that: Copper sleeves are arranged in the guide holes on the upper guide seat (6) and the lower guide seat (7), and a step surface matching the bottom of the guide hole on the lower guide seat (7) is arranged at the bottom of the cylinder barrel (5) of the free-fall hammer oil cylinder.

3. The in-situ testing device for geotechnical engineering investigation according to claim 1, characterized in that: The striking device comprises a guide rod (34) fixedly mounted on one side of a lifting frame (3), a test hammer (33) being slidably connected to the guide rod (34), and a drill rod joint (32) being connected to the bottom end of the guide rod (34), and a housing (31) being arranged on one side of the lifting frame (3) outside the test hammer (33) and the guide rod (34).

4. The in-situ testing device for geotechnical engineering investigation according to claim 1, characterized in that: The striking device further comprises a driving motor (35) mounted on the upper end of the lifting frame (3); a chain gear (38) is mounted on the output end of the driving motor (35) and the lower end of the lifting frame (3); a chain (36) is connected between the two chain gears (38); and two hooks (37) are mounted on both ends of the chain (36).

5. The geotechnical engineering investigation in-situ testing device according to claim 1, characterized in that: A latch pin (8) is installed on the lower fixed seat (2), a pin hole seat (81) is installed at the bottom end of the lifting frame (3) corresponding to the latch pin (8), and a pin hole is installed on the pin hole seat (81), and the latch pin (8) is slidably inserted into the pin hole of the pin hole seat (81).

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