A safe drilling equipment for geotechnical engineering investigation

Abstract

The present invention discloses a safe drilling equipment for geotechnical engineering investigation, which relates to the technical field of geotechnical engineering investigation. The safe drilling equipment for geotechnical engineering investigation comprises a bottom plate, a support column is fixed on the top of the bottom plate, a top plate is fixed on the top of the support column, a support plate is slidably mounted on the outer wall of the support column, and a cylinder is fixed on the top of the top plate. When the cylinder drives the drilling rod to move downward, the connecting rod can be driven to move downward, so that the connecting frame drives the bottom of the moving frame to contact the top of the bottom plate, so that the moving frame is pressed upward on the hinge block by the extrusion force, and the extrusion block can squeeze the protective plate to rotate toward the drilling rod, so that the four groups of protective plates can shield the drilling rod for protection, so as to prevent gravel from splashing around during drilling operations, which brings safety risks to the workers.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical engineering investigation, in particular to a safe drilling device for geotechnical engineering investigation. Background Art

[0002] All kinds of projects on the ground, underground and in water are collectively called civil engineering, among which the part involving rock, soil, underground and water is called geotechnical engineering. Geotechnical engineering investigation refers to the activities of identifying, analyzing and evaluating the geological, environmental characteristics and geotechnical engineering conditions of the construction site and compiling investigation documents according to the requirements of the construction project. If the investigation work is not in place, adverse engineering geological problems will be exposed; so it is necessary to use drilling equipment to conduct advance investigation of construction geology.

[0003] The patent publication number CN217151850U relates to a drilling device for geotechnical engineering survey, which includes a flat plate, a motor is fixedly connected to one side of the flat plate, a rotating connection block is fixedly connected to the output end of the motor, an intermediate block is arranged inside the rotating connection block, and a drilling rod is arranged inside the intermediate block. The rotating fixing rod of the patent can be fixed to the ground, so that the stability of the entire equipment can be maintained. The support column is placed on the ground, and the rotating fixing rod can be rotated toward the ground by turning the handle, and the fixing thorn can be firmly turned into the ground, so that the entire equipment is stable on the ground without offset and displacement. The rotating connection block, the intermediate block and the drilling rod can be adjusted in length. If the drilling rod needs to be adjusted further downward, an intermediate block can be added between the rotating connection block and the drilling rod to adjust its length.

[0004] In the above patent, the drilling operation is carried out by starting the motor to rotate the drill rod. However, during the drilling process, it is inevitable to encounter gravel and the like, so that during the operation of the drill rod, the gravel may splash around. If it splashes onto the workers, it may cause injuries to the workers, posing a safety risk. In view of this, a safe drilling equipment for geotechnical engineering survey is proposed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a safe drilling equipment for geotechnical engineering investigation, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a safe drilling equipment for geotechnical engineering investigation, comprising a base plate, a support column is fixed on the top of the base plate, a top plate is fixed on the top of the support column, a support plate is slidably mounted on the outer wall of the support column, a cylinder is fixed on the top of the top plate, the bottom output end of the cylinder is fixedly connected to the top of the support plate, a motor is fixed on the bottom of the support plate, a drilling rod is fixed on the output end of the motor, when drilling operation is carried out, the drilling rod can be driven to move downward by starting the cylinder, and the drilling rod is rotated by starting the motor to carry out drilling operation, an elastic switch is arranged on the top of the motor, a protective component to prevent debris from splashing is arranged on the base plate, and a protective component to prevent drilling operation is also included. A stabilizing component and a knocking component for rod shaking; wherein the protective component comprises a connecting rod, a connecting plate, a connecting spring, a connecting frame, a hinge block, a protective plate, a movable frame, a reset spring, an extrusion block, a torsion spring, a pressing block, a spring sheet, a support frame and a fixed plate; the connecting rod passes through the support plate and is slidably connected at the penetration point, a connecting plate is fixed to the top of the connecting rod, a fixed plate is fixed to the side wall of the connecting plate, a connecting spring is fixed to the bottom of the connecting plate, the bottom of the connecting spring is fixed to the top of the support plate, a connecting frame is fixed to the bottom of the connecting rod, a hinge block is fixed to the outer wall of the connecting frame, a protective plate is rotatably installed on the inner side of the hinge block, a torsion spring is fixed to the side wall of the protective plate, and the torsion spring is fixed to the side wall of the hinge block away from the protective plate.

[0007] According to the above technical solution, a moving frame is slidably installed on the hinge block, and a return spring is fixed to the bottom of the top protrusion of the moving frame, and the bottom of the return spring is fixed to the top of the hinge block. An extrusion block is fixed to the inner side of the moving frame, and the top of the extrusion block is in contact with the bottom of the protective plate. When the cylinder drives the support plate to move downward, the support plate can drive the connecting rod and the connecting frame to move downward. When the connecting frame moves downward, the bottom of the moving frame will contact the top of the bottom plate, and because the elastic coefficient of the connecting spring is larger than the elastic coefficient of the return spring, when the moving frame contacts the bottom plate, the moving frame will be moved upward by the extrusion force and the extrusion block will squeeze the protective plate, so that the protective plate will rotate to block the drilling rod for safety protection.

[0008] According to the above technical solution, a support frame is fixed on the top of the support plate, and a pressing block is rotatably installed on the inner side of the top of the support frame. A spring sheet is fitted on the bottom of the pressing block, and the bottom of the spring sheet is fixed to the top of the support frame. The end point of the pressing block is fitted with the top of the elastic switch. When the support plate moves downward, the connecting plate will not contact the pressing block, and the spring sheet is in a compressed state. The elastic coefficient of the spring sheet is smaller than the elastic coefficient of the connecting spring and larger than the elastic coefficient of the elastic switch. When the pressing block is not blocked by the fixed plate, the spring sheet drives the pressing block to rotate, so that the pressing block presses the elastic switch, starts the motor, and rotates the drilling rod.

[0009] According to the above technical solution, the stabilizing assembly includes a support block, a movable plate, a return spring, an arc plate, a ball, an L-shaped connecting rod, a skateboard and a rubber plate. The support block is fixed to the outer wall of the connecting rod, and the side wall of the support block is slidingly connected to the inner side of the movable plate. The side wall of the movable plate is fixed with an arc plate, and a ball is rolled on the inner side of the arc plate away from the movable plate. When the protective plate rotates, the protective plate squeezes the movable plate, so that the movable plate drives the arc plate to move, so that the arc plate can drive the ball to fit the outer wall of the drilling rod.

[0010] According to the above technical solution, a return spring is fixed on the inner side of the movable plate, and the side of the return spring away from the drilling rod is fixed to the outer wall of the connecting rod. When the movable plate moves, the return spring can be stretched.

[0011] According to the above technical solution, the outer wall of the movable plate is slidably connected to the end point of the L-shaped connecting rod, a slide plate is fixed to the end of the L-shaped connecting rod away from the movable plate, the slide plate is slidably installed on the inner side of the bottom plate, and a rubber plate is fixed to the bottom of the slide plate. When the connecting rod moves downward, the movable plate can be driven to move downward, so that the L-shaped connecting rod drives the slide plate to move downward, so that the bottom of the rubber plate can be fitted with the ground.

[0012] According to the above technical scheme, the knocking assembly includes an arc block, a semicircular block, a disc, a transmission spring, a transmission plate, a hinged seat, a long rod, a knocking ball, a push rod and a fixed block. The arc block is fixed to the top of the movable plate, the outer wall of the connecting rod is fixed with a disc, the top of the disc is fixed with a transmission spring, the top of the transmission spring is fixed with a transmission plate, the transmission plate is slidably installed on the outer wall of the connecting rod, and the bottom of the transmission plate is fixed with a semicircular block. When the movable plate moves, the arc block can squeeze the semicircular block, so that the transmission plate can move upward and stretch the transmission spring. When the arc block moves to no longer contact the semicircular block, the transmission spring is in a stretched state, which can drive the transmission plate to move downward for reset.

[0013] According to the above technical solution, a fixed block is fixed on the top of the transmission plate, a push rod is fixed on the side wall of the fixed block, a hinge seat is fixed on the outer wall of the connecting rod, a long rod is hinged on the hinge seat, a knocking ball is fixed on the end point of the long rod, and the inner wall of the groove on the outer wall of the long rod is in contact with the outer wall of the push rod. When the transmission plate moves upward, the fixed block can drive the push rod to squeeze the long rod, so that the long rod rotates at the hinge, so that the knocking ball is away from the drilling rod.

[0014] The present invention provides a safe drilling device for geotechnical engineering investigation. It has the following beneficial effects:

[0015] (1) The safety drilling equipment for geotechnical engineering investigation, when the cylinder drives the drilling rod to move downward, it can drive the connecting rod to move downward, so that the connecting frame drives the bottom of the moving frame to contact the top of the bottom plate, so that the moving frame is squeezed and moves upward on the hinge block, which can make the squeezing block squeeze the protective plate to rotate toward the drilling rod, so that the four sets of protective plates can shield the drilling rod for protection, to prevent the debris from splashing around during the drilling operation, which brings safety risks to the workers, and when the support plate drives the drilling rod to move downward, the connecting frame drives the bottom of the moving frame to contact the top of the bottom plate, so that the moving frame moves upward on the hinge block under the extrusion force, so that the extrusion block squeezes the protective plate to rotate toward the drilling rod, so that the four sets of protective plates can shield the drilling rod for protection, to prevent the debris from splashing around during the drilling operation, which brings safety risks to the workers, and when the support plate drives the drilling rod to move downward, the connecting frame drives the bottom of the moving frame to contact the top of the bottom plate, so that the moving frame moves upward on the hinge block under the extrusion force, which can make the extrusion block squeeze the protective plate to rotate toward the drilling rod, so that the four sets of protective plates can shield the drilling rod for protection, When the pressure plate is in motion, the pressing block is not blocked by the fixed plate, and the pressing block can squeeze the elastic switch through the spring sheet to start the motor. When the drilling is completed, the starting cylinder drives the drilling rod to be pulled out of the ground, which will make the pressing block contact with the fixed plate, so that the fixed plate will apply an extrusion force to the pressing block, so that the pressing block can rotate without squeezing the elastic switch, thereby turning off the motor, preventing the drilling rod from being pulled out of the ground while still rotating at high speed, which will easily throw out impurities on the surface of the drilling rod and pose a safety risk.

[0016] (2) The safety drilling equipment for geotechnical engineering investigation, when the protective plate rotates, will squeeze the movable plate, thereby driving the arc plate to approach the drilling rod, so that the arc plate drives the two sets of balls to fit the surface of the drilling rod, thereby stabilizing the drilling rod and preventing the bottom of the drilling rod from shaking when the motor transmits power to the bottom of the drilling rod at the beginning of the drilling operation, which may easily cause the position of the drilling hole to shift when the positioning drilling is just performed. When the movable plate moves downward, the L-shaped connecting rod can drive the sliding plate and the rubber plate to move downward, so that the rubber plate is in close contact with the ground on which the device is placed, thereby increasing the friction of the device, making the device more stable, and preventing the device from shaking violently during drilling.

[0017] (3) The safety drilling equipment for geotechnical engineering investigation can make the arc block squeeze the semicircular block when the moving plate moves, and through the cooperation of the transmission plate, transmission spring, fixed block, push rod, hinged seat, long rod and knocking ball, the knocking ball can knock back and forth on the outer wall of the drilling rod, so that when the drilling rod is pulled out of the ground, impurities such as mud attached to the surface of the drilling rod can be knocked off, which is convenient for subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0020] Figure 3 It is a partial structural schematic diagram of the present invention;

[0021] Figure 4 It is a schematic diagram of the structures of the protection component, the stabilization component and the knocking component of the present invention;

[0022] Figure 5 It is a partial structural schematic diagram of the protection component of the present invention;

[0023] Figure 6 It is a partial structural schematic diagram of the stabilizing component and the striking component of the present invention;

[0024] Figure 7 It is a schematic diagram of the local structure of the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the knocking component of the present invention;

[0026] Fig. 9 For the present invention Figure 2 A magnified schematic diagram of the A structure.

[0027] In the figure: 1, bottom plate; 2, support column; 3, top plate; 4, support plate; 5, cylinder; 6, motor; 7, drilling rod; 81, connecting rod; 82, connecting plate; 83, connecting spring; 84, connecting frame; 85, hinge block; 86, protective plate; 87, moving frame; 88, return spring; 89, torsion spring; 810, extrusion block; 811, support frame; 812, pressing block; 813, fixing plate; 814, spring sheet; 9, Elastic switch; 101, support block; 102, moving plate; 103, return spring; 104, arc plate; 105, ball bearing; 106, L-shaped connecting rod; 107, slide plate; 108, rubber plate; 111, arc block; 112, semicircular block; 113, disc; 114, transmission spring; 115, transmission plate; 116, hinged seat; 117, long rod; 118, knocking ball; 119, fixed block; 120, push rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 9 One embodiment of the present invention is: a safe drilling equipment for geotechnical engineering investigation, including a bottom plate 1, a support column 2 is fixed on the top of the bottom plate 1, a top plate 3 is fixed on the top of the support column 2, a support plate 4 is slidably mounted on the outer wall of the support column 2, a cylinder 5 is fixed on the top of the top plate 3, the bottom output end of the cylinder 5 is fixedly connected to the top of the support plate 4, a motor 6 is fixed on the bottom of the support plate 4, a drilling rod 7 is fixed to the output end of the motor 6, an elastic switch 9 is arranged on the top of the motor 6, and the elastic switch 9 is electrically connected to the motor 6, and a protective component for preventing debris from splashing is arranged on the bottom plate 1. ; Among them, the protection assembly includes a connecting rod 81, a connecting plate 82, a connecting spring 83, a connecting frame 84, a hinge block 85, a protective plate 86, a moving frame 87, a reset spring 88, an extrusion block 810, a torsion spring 89, a pressing block 812, a spring sheet 814, a support frame 811 and a fixed plate 813; the connecting rod 81 passes through the support plate 4, and is slidably connected at the penetration point, the top of the connecting rod 81 is fixed with the connecting plate 82, the side wall of the connecting plate 82 is fixed with the fixed plate 813, the bottom of the connecting plate 82 is fixed with the connecting spring 83, and the bottom of the connecting spring 83 is fixed to the support plate 4 The top and bottom of the connecting rod 81 are fixed with a connecting frame 84, and an articulated block 85 is fixed to the outer wall of the connecting frame 84. A protective plate 86 is rotatably installed on the inner side of the articulated block 85. A torsion spring 89 is fixed to the side wall of the protective plate 86. The side of the torsion spring 89 away from the protective plate 86 is fixed to the side wall of the articulated block 85. A moving frame 87 is slidably installed on the articulated block 85. A reset spring 88 is fixed to the bottom of the top protrusion of the moving frame 87. The bottom of the reset spring 88 is fixed to the top of the articulated block 85. An extrusion block 810 is fixed to the inner side of the moving frame 87. The top of the extrusion block 810 is fixed to the protective plate. The bottom of 86 is fitted with, a support frame 811 is fixed on the top of the support plate 4, a pressing block 812 is rotatably installed on the inner side of the top of the support frame 811, and a spring sheet 814 is fitted on the bottom of the pressing block 812. The bottom of the spring sheet 814 is fixed to the top of the support frame 811, and the end point of the pressing block 812 is fitted with the top of the elastic switch 9. Four groups of protective plates 86 are provided, and the four groups of protective plates 86 are arranged in a circular array with the center point of the drilling rod 7 as the center of the circle, and the drilling rod 7 is shielded and protected by the four groups of protective plates 86, which can prevent debris from splashing and causing harm to the staff.

[0030] Because the spring sheet 814 is in a compressed state, when the pressing block 812 is not blocked by the fixing plate 813, the pressing block 812 can be reset through the spring sheet 814, so that the pressing block 812 presses the elastic switch 9, thereby driving the motor 6 to start, so that the drilling rod 7 can be rotated, and the drilling operation can be carried out through the drilling rod 7. When the cylinder 5 drives the motor 6 and the drilling rod 7 to move upward and return to the original position, the fixing plate 813 will squeeze the pressing block 812 to rotate, so that the pressing block 812 will not press the elastic switch 9, so that the elastic switch 9 is reset, the motor 6 is turned off, and the drilling rod 7 stops rotating, so as to prevent the drilling rod 7 from being pulled out of the ground. It is also in a high-speed rotation state, which is easy to throw out impurities on the surface of the drilling rod 7, posing a safety risk.

[0031] When the present embodiment is working, when drilling is required, the equipment is moved to the position where drilling is required, and the cylinder 5 is started to drive the support plate 4 to move downward. When the support plate 4 moves downward, the support plate 4 can drive the connecting rod 81 to move downward, and the connecting rod 81 drives the connecting frame 84 to move downward, so that the connecting frame 84 can move downward to contact the top of the bottom plate 1. Because the elastic coefficient of the connecting spring 83 is ten times the elastic coefficient of the reset spring 88, when the support plate 4 continues to drive the connecting frame 84 to move downward, the movable The frame 87 is pressed upward in the connecting frame 84 by the extrusion force, so that the reset spring 88 is stretched. When the moving frame 87 moves upward, it can drive the extrusion block 810 to move upward, so that the extrusion block 810 can squeeze the bottom of the protective plate 86, and the coefficient of the connecting spring 83 is ten times the elastic coefficient of the torsion spring 89, so that the extrusion block 810 can squeeze the protective plate 86 to rotate, so that the torsion spring 89 is deformed, and the torsion spring 89 gives a reaction force to the protective plate 86, and when the protective plate 86 rotates toward the drilling rod 7, it can The four sets of protection plates 86 shield and protect the drilling rod 7, so as to prevent the debris from splashing and causing harm to the staff. When the support plate 4 continues to move downward, the moving frame 87 cannot continue to move on the connecting frame 84. Therefore, when the support plate 4 continues to move downward, the support plate 4 pulls the connecting spring 83 to move downward. When the support plate 4 continues to move downward, the pressing block 812 is away from the connecting plate 82. The elastic coefficient of the connecting spring 83 is five times the elastic coefficient of the spring sheet 814. When the support plate 4 continues to move downward, the connecting spring 83 is pulled away from the connecting plate 82. When the plate 4 moves downward and drives the pressing block 812 away from the connecting plate 82, the fixing plate 813 does not block the pressing block 812, and the spring sheet 814 is originally in a compressed state, so that the spring sheet 814 drives the pressing block 812 to rotate downward on the inner side of the support frame 811. Since the elastic coefficient of the spring sheet 814 is five times the elastic coefficient of the elastic switch 9, the pressing block 812 squeezes the elastic switch 9 and presses it downward, so that the motor 6 is started, driving the drilling rod 7 to rotate, and the drilling operation can begin.

[0032] When the drilling operation is completed, the cylinder 5 is started to drive the support plate 4 to drive the drilling rod 7 to move upward. When the support plate 4 moves upward until the connecting spring 83 returns to its original state, and when the support plate 4 continues to move upward, the support plate 4 drives the connecting rod 81 to move upward, so that the connecting frame 84 moves upward, and drives the moving frame 87 to move upward. Because the moving frame 87 is not in contact with the bottom plate 1, the return spring 88 is in a stretched state, which can drive the moving frame 87 to move downward on the connecting frame 84, so that the extrusion block 810 does not squeeze the protective plate 86. Because the torsion spring 89 is in a deformed state, it will The torsion spring 89 drives the protective plate 86 to reset, so that the protective plate 86 is restored to a state flush with the base plate 1, which is convenient for replacing and repairing the drilling rod 7. When the support plate 4 drives the support frame 811 to move upward until the pressing block 812 contacts the bottom of the fixed plate 813, the pressing block 812 will squeeze the bottom of the fixed plate 813, so that the pressing block 812 will be subjected to the squeezing force, causing the pressing block 812 to rotate away from the elastic switch 9, so that the pressing block 812 does not squeeze the elastic switch 9, and the elastic switch 9 is reset, thereby being able to cut off the power to the motor 6, so that the motor 6 no longer drives the drilling rod 7 to rotate.

[0033] See also Figure 1-Figure 9On the basis of the above embodiment, another embodiment of the present invention further includes a stabilizing component and a knocking component for preventing the drilling rod 7 from shaking, the stabilizing component includes a support block 101, a movable plate 102, a return spring 103, an arc plate 104, a ball 105, an L-shaped connecting rod 106, a slide plate 107 and a rubber plate 108, the support block 101 is fixed to the outer wall of the connecting rod 81, the side wall of the support block 101 is slidably connected to the inner side of the movable plate 102, the side wall of the movable plate 102 is fixed with an arc plate 104, the inner side of the side of the arc plate 104 away from the movable plate 102 is rolled with a ball 105, the inner side of the movable plate 102 is fixed with a return spring 103, the side of the return spring 103 away from the drilling rod 7 is fixed to the outer wall of the connecting rod 81, the outer wall of the movable plate 102 is slidably connected to the end point of the L-shaped connecting rod 106, and the L-shaped connecting rod 106 is slidably connected to the outer wall of the connecting rod 81. A slide plate 107 is fixed to one end of the rod 106 away from the moving plate 102. The slide plate 107 is slidably installed on the inner side of the base plate 1. A rubber plate 108 is fixed to the bottom of the slide plate 107. Two groups of arc plates 104 are provided, and the two groups of arc plates 104 are symmetrically arranged with the center line of the drilling rod 7 in the vertical direction as the symmetry axis. By the mutual approach of the two groups of arc plates 104, the ball 105 can be fitted with the outer wall of the drilling rod 7, so as to limit the position of the drilling rod 7. When the motor 6 transmits power to the bottom of the drilling rod 7, the bottom of the drilling rod 7 may shake, which may easily cause the position of the drilling hole to shift when the positioning drilling is just performed. By the arrangement of the ball 105, when the drilling rod 7 moves downward and rotates, the friction between the drilling rod 7 and the drilling rod 7 can be reduced to prevent excessive friction and wear of the drilling rod 7.

[0034] Two groups of rubber plates 108 are provided, and the two groups of rubber plates 108 are symmetrically arranged with the center line of the bottom plate 1 in the vertical direction as the symmetry axis. When performing drilling operations, the two groups of rubber plates 108 are brought into contact with the ground, thereby increasing the friction between the device and the ground, reducing the shaking of the device during drilling operations, and preventing the device from shaking violently, which affects the stability during drilling operations.

[0035] The knocking assembly includes an arc block 111, a semicircular block 112, a disc 113, a transmission spring 114, a transmission plate 115, a hinge seat 116, a long rod 117, a knocking ball 118, a push rod 120 and a fixed block 119. The arc block 111 is fixed to the top of the movable plate 102, the outer wall of the connecting rod 81 is fixed with a disc 113, the top of the disc 113 is fixed with a transmission spring 114, the top of the transmission spring 114 is fixed with a transmission plate 115, the transmission plate 115 is slidably mounted on the outer wall of the connecting rod 81, the bottom of the transmission plate 115 is fixed with a semicircular block 112, the top of the transmission plate 115 is fixed with a fixed block 119, the side wall of the fixed block 119 is fixed with a push rod 120, and the outer wall of the connecting rod 81 is fixed with a hinge A connecting seat 116 is hinged with a long rod 117 on the hinged seat 116, and a knocking ball 118 is fixed to the end point of the long rod 117. The inner wall of the outer wall groove of the long rod 117 fits with the outer wall of the push rod 120. The top of the arc block 111 is set to an arc surface shape, and there are multiple groups of arc blocks 111, which are arranged in a linear array on the top of the movable plate 102. When the arc block 111 moves on the semicircular block 112, the bottom of the semicircular block 112 will be squeezed and moved upward, which can make the transmission plate 115 move upward and stretch the transmission spring 114. When the arc block 111 does not squeeze the semicircular block 112, the transmission spring 114 can cooperate with the transmission spring 114 to drive the transmission plate 115 to reset.

[0036] There are two groups of knocking balls 118, and the two groups of knocking balls 118 are symmetrically arranged with the center line of the base plate 1 in the vertical direction as the symmetry axis. By setting the knocking balls 118, the outer wall of the drilling rod 7 can be knocked. When the drilling rod 7 is pulled out of the ground, impurities such as soil attached to the surface of the drilling rod 7 can be knocked off, which is convenient for subsequent use.

[0037] When the present embodiment is working, when the protection plate 86 rotates, the protection plate 86 can squeeze the movable plate 102, and the elastic coefficient of the return spring 88 is five times that of the return spring 103, so that the protection plate 86 can squeeze the movable plate 102 to approach the drilling rod 7, so that the return spring 103 is stretched, so that the arc plate 104 drives the ball 105 to approach the drilling rod 7, so that the ball 105 contacts the outer wall of the drilling rod 7, thereby limiting the position of the drilling rod 7, and preventing the drilling rod 7 from vibrating violently when the drilling operation starts, which may easily lead to deviation of the drilling position, and when the connecting rod 81 drives the movable plate 102 to When the movable plate 102 moves downward, the L-shaped connecting rod 106 can be driven to move downward, so that the slide plate 107 drives the bottom of the rubber plate 108 to fit closely with the placement surface of the device to improve the stability of the device. When the protective plate 86 does not squeeze the movable plate 102, because the return spring 103 is in a stretched state, the return spring 103 can drive the movable plate 102 away from the drilling rod 7, and the arc plate 104 drives the ball 105 away from the drilling rod 7. When the support plate 4 drives the connecting rod 81 and the movable plate 102 to move upward, the movable plate 102 drives the L-shaped connecting rod 106 to move upward, so that the slide plate 107 can drive the rubber plate 108 not to contact the ground, thereby facilitating the movement of the device.

[0038] When the moving plate 102 is away from the drilling rod 7, the arc block 111 can be driven to move. When the arc surface of the arc block 111 contacts the arc surface of the semicircular block 112, and the elastic coefficient of the return spring 88 is ten times the elastic coefficient of the transmission spring 114, the arc block 111 can squeeze the semicircular block 112 to move upward, so that the semicircular block 112 drives the transmission plate 115 to move upward, and the transmission spring 114 is stretched. When the transmission plate 115 moves upward, the fixed block 119 drives the push rod 120 to squeeze in the groove provided on the outer wall of the long rod 117, so that the long rod 117 can be squeezed. 7 rotates upward to make the knocking ball 118 away from the drilling rod 7. When the arc block 111 is not in contact with the semicircular block 112, the transmission spring 114 is in a stretched state, which drives the transmission plate 115 to move downward, so that the fixed block 119 drives the push rod 120 to move downward, and the push rod 120 pulls the long rod 117 to rotate downward, so that the knocking ball 118 knocks on the outer wall of the drilling rod 7, and when the arc block 111 moves back and forth on the semicircular block 112, the knocking ball 118 can knock on the outer wall of the drilling rod 7 back and forth, knocking off the impurities attached to the outer wall of the drilling rod 7 after drilling is completed.

[0039] 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 safe drilling device for geotechnical engineering investigation, comprising a base plate (1), characterized in that: A support column (2) is fixed on the top of the base plate (1), a top plate (3) is fixed on the top of the support column (2), a support plate (4) is slidably mounted on the outer wall of the support column (2), a cylinder (5) is fixed on the top of the top plate (3), a bottom output end of the cylinder (5) is fixedly connected to the top of the support plate (4), a motor (6) is fixed on the bottom of the support plate (4), a drilling rod (7) is fixed to the output end of the motor (6), an elastic switch (9) is arranged on the top of the motor (6), a protective component for preventing debris from splashing is arranged on the base plate (1), and also includes a stabilizing component and a knocking component for preventing the drilling rod (7) from shaking; The protection assembly comprises a connecting rod (81), a connecting plate (82), a connecting spring (83), a connecting frame (84), a hinge block (85), a protection plate (86), a moving frame (87), a return spring (88), an extrusion block (810), a torsion spring (89), a pressing block (812), a spring sheet (814), a support frame (811) and a fixing plate (813); the connecting rod (81) passes through the supporting plate (4) and is slidably connected at the passing portion; a connecting plate (82) is fixed to the top of the connecting rod (81); and a side wall of the connecting plate (82) A fixing plate (813) is fixed thereto, a connecting spring (83) is fixed to the bottom of the connecting plate (82), the bottom of the connecting spring (83) is fixed to the top of the supporting plate (4), a connecting frame (84) is fixed to the bottom of the connecting rod (81), a hinge block (85) is fixed to the outer wall of the connecting frame (84), a protective plate (86) is rotatably mounted on the inner side of the hinge block (85), a torsion spring (89) is fixed to the side wall of the protective plate (86), and the torsion spring (89) is fixed to the side wall of the hinge block (85) on a side away from the protective plate (86); The stabilizing component comprises a support block (101), a movable plate (102), a return spring (103), a curved plate (104), a ball bearing (105), an L-shaped connecting rod (106), a sliding plate (107) and a rubber plate (108); the support block (101) is fixed to the outer wall of the connecting rod (81); the side wall of the support block (101) is slidably connected to the inner side of the movable plate (102); the side wall of the movable plate (102) is fixed with a curved plate (104); and the ball bearing (105) rolls on the inner side of a side of the curved plate (104) away from the movable plate (102); The knocking assembly comprises an arc block (111), a semicircular block (112), a disc (113), a transmission spring (114), a transmission plate (115), a hinge seat (116), a long rod (117), a knocking ball (118), a push rod (120) and a fixed block (119); the arc block (111) is fixed to the top of the moving plate (102); the disc (113) is fixed to the outer wall of the connecting rod (81); the transmission spring (114) is fixed to the top of the disc (113); the transmission plate (115) is fixed to the top of the transmission spring (114); the transmission plate (115) is slidably mounted on the outer wall of the connecting rod (81); and the semicircular block (112) is fixed to the bottom of the transmission plate (115).

2. A safe drilling equipment for geotechnical engineering investigation according to claim 1, characterized in that: A moving frame (87) is slidably mounted on the hinge block (85); a return spring (88) is fixed to the bottom of a protruding portion of the top of the moving frame (87); the bottom of the return spring (88) is fixed to the top of the hinge block (85); an extrusion block (810) is fixed to the inner side of the moving frame (87); the top of the extrusion block (810) is in contact with the bottom of the protective plate (86).

3. A safe drilling equipment for geotechnical engineering investigation according to claim 2, characterized in that: A support frame (811) is fixed on the top of the support plate (4); a pressing block (812) is rotatably mounted on the inner side of the top of the support frame (811); a spring sheet (814) is affixed to the bottom of the pressing block (812); the bottom of the spring sheet (814) is fixed to the top of the support frame (811); and an end point of the pressing block (812) is affixed to the top of the elastic switch (9).

4. The safe drilling equipment for geotechnical engineering investigation according to claim 1, characterized in that: A return spring (103) is fixed on the inner side of the movable plate (102), and the side of the return spring (103) away from the drilling rod (7) is fixed to the outer wall of the connecting rod (81).

5. A safe drilling equipment for geotechnical engineering investigation according to claim 4, characterized in that: The outer wall of the movable plate (102) is slidably connected to the end point of the L-shaped connecting rod (106); a sliding plate (107) is fixed to one end of the L-shaped connecting rod (106) away from the movable plate (102); the sliding plate (107) is slidably mounted on the inner side of the bottom plate (1); and a rubber plate (108) is fixed to the bottom of the sliding plate (107).

6. A safe drilling equipment for geotechnical engineering investigation according to claim 5, characterized in that: A fixing block (119) is fixed on the top of the transmission plate (115), a push rod (120) is fixed on the side wall of the fixing block (119), a hinge seat (116) is fixed on the outer wall of the connecting rod (81), a long rod (117) is hinged on the hinge seat (116), a knocking ball (118) is fixed at the end point of the long rod (117), and the inner wall of the groove on the outer wall of the long rod (117) is in contact with the outer wall of the push rod (120).

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