Water conservancy construction device

Abstract

The application discloses a water conservancy construction device, which comprises a mast assembly and a drill rod, a lifting guide and a power head are installed on the mast assembly, the drill rod is in transmission connection with the power head and is connected with the power head, a drill bit is installed at the bottom of the drill rod, a clamping mechanism and a driving mechanism are installed on the power head, and the driving mechanism is used for clamping the drill rod through the clamping mechanism when the drill rod is driven to rotate; the driving mechanism and the clamping mechanism can automatically clamp the drill rod after the drill rod is installed into the power head, the whole process is simple and easy to operate, and unnecessary time waste can be avoided.

Description

Technical Field

[0001] This invention relates to the field of water conservancy construction technology, specifically a water conservancy construction device. Background Technology

[0002] In water conservancy construction, drilling rigs are commonly used tools for drilling underground. Drilling is used for purposes such as creating wells, fixing pipelines, and installing underground equipment. Some common applications in water conservancy construction include: Exploratory drilling: Drilling rigs are used for geological exploration to obtain information about underground strata structure and hydrogeological conditions. This is crucial for the planning and design of water conservancy projects, such as determining groundwater levels, finding suitable water sources, and identifying underground structures; Pumping well drilling: In some hydrological engineering projects requiring drainage, such as tunnels, basements, and dams, drilling rigs are used to drill pumping wells to lower the groundwater level. Pumping wells reduce the impact on groundwater during construction and maintain a dry environment in the construction area.

[0003] For example, patent CN102828690B, published on July 9, 2014, discloses a walking-type double-rotary down-the-hole drill rig, which relates to a type of construction machinery. It includes a pile frame body and a drilling body. The pile frame body includes a walking chassis, a column, a bracing mechanism, a winch, and a pulley block. The drilling body is characterized by an upper power head, a lower power head, an outer sleeve, a auger drill rod, and a down-the-hole hammer. The upper power head is connected to the top of the auger drill rod via a buffer. The auger drill rod moves through the inner hole provided in the lower power head and the outer sleeve. The bottom end of the auger drill rod is connected to the down-the-hole hammer. When the upper power head is working, it drives the auger drill rod and the down-the-hole hammer to rotate clockwise. The lower power head is connected to the outer sleeve. When the lower power head is working, it drives... The outer sleeve rotates counterclockwise. The down-the-hole hammer includes an impactor and an impact hammer, with the hammer head exposed at the lower opening of the outer sleeve. The buffer, auger, impactor, and impact hammer are equipped with interconnected high-pressure gas channels. High-pressure gas produced by the air compressor passes through an oil mist generator and is connected to the inlet of the high-pressure gas channel via a high-pressure gas pipe. The high-pressure gas passes through the upper power head, buffer, auger, and impactor, and finally blown outward from the bottom of the impact hammer. The impactor includes a steel pipe, drill pipe joint, one-way valve, cylinder liner, and impact head. The drill pipe joint is connected to the upper opening of the steel pipe and to the bottom end of the auger. The one-way valve is located inside the steel pipe and includes a valve head, spring, and valve seat. An air inlet chamber is provided between the upper end face of the valve seat and the drill pipe joint. The air intake chamber communicates with the air intake hole provided in the drill pipe joint. The valve head is located above the valve seat, and the spring is located at the bottom of the valve head. Under the action of the spring, the valve head blocks the air intake hole. The lower part of the valve seat is fitted into the inner hole of the cylinder liner. The outer circle of the lower part of the valve seat has an annular groove. The annular groove communicates with the air intake chamber through the vertical hole of the valve seat. The cylinder liner is fitted into the inner hole of the steel pipe. An airflow passage is left between the outer circle of the cylinder liner and the inner hole of the steel pipe. The airflow passage communicates with the annular groove through the upper transverse hole provided in the cylinder liner. The cylinder liner also has a lower transverse hole. The inner hole of the cylinder liner between the upper and lower transverse holes has a vertical groove. The impact head is movably set below the cylinder liner. The impact head is a column that is smaller in the middle and larger at both ends. The upper column slides in fit with the inner hole of the cylinder liner, and the lower column slides in fit with the inner hole of the steel pipe. The upper part of the cylindrical surface is provided with a strip groove, and the inner hole of the steel pipe corresponding to the lower part of the cylindrical surface is provided with an annular groove. The impact head is provided with an axial through hole that runs through the top and bottom. The bottom surface of the valve seat is provided with a plunger corresponding to the axial through hole. The outer circle of the plunger, the inner hole of the cylinder liner and the upper surface of the impact head form a gas chamber. At the lower limit position of the impact head, the strip groove and the annular groove partially intersect. High-pressure gas reaches the bottom of the impact head through the air inlet chamber, vertical hole, annular groove, upper transverse hole, airflow passage, strip groove and annular groove. At the upper limit position of the impact head, the strip groove and annular groove are completely staggered. High-pressure gas enters the gas chamber through the air inlet chamber, vertical hole, annular groove, upper transverse hole, airflow passage, lower transverse hole and vertical groove. At the same time, the plunger enters the axial through hole to block the axial through hole.The buffer includes a sleeve, a piston rod, and a piston. The upper end of the sleeve is connected to an end cap, and the lower end of the sleeve is connected to a lower drill pipe connector. The lower drill pipe connector is connected to the top end of the spiral drill pipe. The inner hole of the sleeve consists of upper and lower parts: the upper part is a piston chamber, and the lower part is an internal hexagonal square hole. The piston slides within the piston chamber and is connected to the piston rod. The top end of the piston rod extends outside the end cap and is connected to the upper drill pipe connector. The upper drill pipe connector is connected to the upper power head. The bottom end of the piston rod is connected to an external hexagonal rod body, which slides within the internal hexagonal square hole. The buffer has an airflow channel that axially runs through the entire buffer from top to bottom.

[0004] The aforementioned patent documents disclose down-the-hole drilling rigs commonly used in water conservancy construction. When using down-the-hole drilling rigs, the drill rod needs to be installed inside the power head, and the drill rod is clamped and fixed by the clamping device inside the power head. However, some existing clamping devices use a manual method to install the drill rod inside the power head, which is cumbersome and causes unnecessary waste of time. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic construction device to overcome the aforementioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic construction device, comprising a mast assembly and a drill rod, wherein a lifting device and a power head are mounted on the mast assembly, the drill rod is connected to and driven by the power head, a drill bit is mounted at the bottom of the drill rod, and a clamping mechanism and a driving mechanism are mounted on the power head, the driving mechanism being used to clamp the drill rod through the clamping mechanism when driving the drill rod to rotate.

[0007] Furthermore, the drive mechanism includes a drive motor, a gear ring, a rotating ring, and a driven ring. The drive motor is fixedly mounted on the power head, and a gear set is installed inside the power head. The output shaft of the drive motor extends into the power head and connects to the gear set. A mounting hole is provided inside the power head, and the gear ring is rotatably mounted in the mounting hole and meshes with the gear set. The rotating ring is fixedly connected to the gear ring, and the driven ring is located above the rotating ring and rotatably connected to the inner wall of the power head. The clamping mechanism includes a clamping plate, which is installed between the rotating ring and the driven ring. A guide groove is provided on the rotating ring, and a driven groove is provided on the driven ring. Slider blocks are fixedly mounted at both ends of the clamping plate. The sliders are located in the guide groove and the driven groove and form a sliding guide engagement with the guide groove and the driven groove. A limit mechanism is installed between the driven ring and the inner wall of the power head to limit the rotation of the driven ring.

[0008] Furthermore, it also includes a locking mechanism for locking the drill rod in the clamped state.

[0009] Furthermore, the limiting mechanism includes a cylinder and a baffle. The cylinder is mounted on the power head, and the baffle is located inside the power head. The output shaft of the cylinder passes through the power head and is connected to the baffle. A groove is provided on the upper surface of the passive ring, and the bottom of the baffle is located in the groove and forms a limiting contact engagement with the groove.

[0010] Furthermore, the clamping plates are provided in multiple sets, and the multiple sets of clamping plates are arranged in a circular and equidistant manner inside the power head.

[0011] Furthermore, the limiting mechanism also includes a support ring, with a baffle installed on the lower surface of the support ring.

[0012] Furthermore, the side of the clamp plate closest to the central axis of the mounting hole is an arc-shaped surface.

[0013] Furthermore, the locking mechanism includes a gear and a locking block. The gear is rotatably mounted on the slider in the passive groove. The baffle has a toothed groove on the side near the passive groove. The gear meshes with the baffle through the toothed groove. A hook is mounted on the gear. The locking block is fixedly mounted on the upper surface of the passive ring. A limit groove is opened inside the locking block. The limit groove and the hook form a limit abutment engagement.

[0014] Furthermore, a guide ramp is arranged on the side of the clamp near the drill pipe.

[0015] Furthermore, a guide plate is movably installed on one side of the clamping plate near the drill rod, and a transmission mechanism is installed inside the clamping plate. The transmission mechanism is used to drive the guide plate to rotate on the clamping plate during the movement of the clamping plate.

[0016] The beneficial effects of the present invention are as follows: In the above technical solution, the driving mechanism and clamping mechanism provided by the present invention can automatically clamp the drill rod after it is installed in the power head. The whole process is simple and easy to operate, and can avoid unnecessary time waste. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the structure of the water conservancy construction device provided in an embodiment of the present invention;

[0019] Figure 2 A partial sectional view of the power head provided in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the rotating ring structure from below, provided in an embodiment of the present invention.

[0021] Figure 4 This is a top view schematic diagram of the passive ring structure provided in an embodiment of the present invention;

[0022] Figure 5 Provided for embodiments of the present invention Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 This is an internal sectional view of the clamp provided in an embodiment of the present invention;

[0024] Figure 7 This is a top view of the clamp provided in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Mast assembly; 2. Drill pipe; 21. Drill bit; 3. Lifter; 4. Power head; 41. Mounting hole; 5. Clamping mechanism; 51. Clamping plate; 52. Slider; 53. Guide plate; 54. Elastic telescopic plate; 6. Drive mechanism; 61. Drive motor; 62. Gear set; 63. Gear ring; 64. Rotating ring; 65. Passive ring; 66. Guide groove; 67. Passive groove; 68. Slot; 7. Limiting mechanism; 71. Cylinder; 72. Baffle; 73. Support ring; 74. Gear groove; 8. Locking mechanism; 81. Gear; 82. Hook; 83. Locking block; 84. Limiting groove; 9. Transmission mechanism; 91. Lead screw; 92. Lead nut; 93. Connecting rod. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] like Figures 1-7As shown in the figure, an embodiment of the present invention provides a water conservancy construction device, which is a drilling rig, including a mast assembly 1 and a drill rod 2. A lifting device 3 and a power head 4 are installed on the mast assembly 1. The drill rod 2 passes through the power head 4 and is connected to the power head 4. A drill bit 21 is installed at the bottom of the drill rod 2. A clamping mechanism 5 and a driving mechanism 6 are installed on the power head 4. The driving mechanism 6 is used to clamp the drill rod 2 through the clamping mechanism 5 when driving the drill rod 2 to rotate.

[0030] Specifically, the mast assembly 1 includes a mast and a lifting mechanism. The mast is vertically arranged, and the power head 4 is movably mounted on the mast. The lifting mechanism is connected to the power head 4 and is used to drive the power head 4 to move up and down along the length of the mast, i.e., in the vertical direction. In this embodiment, the lifting mechanism is preferably a chain lifting mechanism. Figure 1 As shown, the chain in the chain lifting mechanism is connected to the power mechanism. The rotation of the chain drives the power head 4 to slide on the mast. The lifting device 3 is installed at the top of the mast. The lifting device 3 is existing technology and will not be described in detail. In actual use, the lifting device 3 lifts the drill rod 2 placed on the ground, and the power head 4 descends. When the drill rod 2 is lifted above the power head 4, the lifting device 3 drives the drill rod 2 to descend again. The lifting mechanism drives the power head 4 to rise, so that the bottom of the drill rod 2 passes through the power head 4 and extends out from its bottom. Then, the drill bit 21 is installed at the bottom of the drill rod 2. The drive mechanism 6 rotates and outputs power to drive the clamping mechanism 5 to clamp the part of the drill rod 2 that extends into the power head 4. After clamping, the drive mechanism 6 drives the clamping mechanism 5 to rotate, which in turn drives the drill rod 2 to rotate. While the drill rod 2 is rotating, the power head 4 drives the drill rod 2 to descend, so that the drill rod 2 descends during its rotation, thereby realizing drilling into the ground.

[0031] Furthermore, the drive mechanism 6 includes a drive motor 61, a gear ring 63, a rotating ring 64, and a driven ring 65. The drive motor 61 is fixedly mounted on the power head 4. A gear set 62 is installed inside the power head 4. The output shaft of the drive motor 61 extends into the power head 4 and is connected to the gear set 62. A mounting hole 41 is provided inside the power head 4. The gear ring 63 is rotatably mounted in the mounting hole 41 and meshes with the gear set 62. The rotating ring 64 is fixedly connected to the gear ring 63. The driven ring 65 is located above the rotating ring 64 and the two are arranged parallel to each other. The driven ring 65 is rotatably connected to the gear set 62. The inner wall of the power head 4 and the clamping mechanism 5 include multiple clamping plates 51, which are circumferentially arrayed and installed between the rotating ring 64 and the passive ring 65. The rotating ring 64 has a guide groove 66, and the passive ring 65 has a passive groove 67. Slider 52 is fixedly installed at both the upper and lower ends of the clamping plates 51. The two sliders 52 are located in the guide groove 66 and the passive groove 67 respectively, and form a sliding guide engagement with the guide groove 66 and the passive groove 67. A limit mechanism 7 is installed between the passive ring 65 and the inner wall of the power head 4. The limit mechanism 7 is used to limit the rotation of the passive ring 65.

[0032] Specifically, the passive ring 65 is rotatably connected to the inner wall of the power head 4, and the limiting mechanism 7 is also arranged between the power head 4 and the passive ring 65. The limiting mechanism 7 can be a rubber pad, rubber ring, etc. When the limiting mechanism 7 is a rubber pad, the rubber pad contacts the passive ring 65, providing a large frictional force to the passive ring 65, so that the passive ring 65 can remain stationary during the rotation of the rotating ring 64, until the clamping plate 51 clamps the drill rod 2, at which point the rotating ring 64 drives the passive ring 65 to rotate synchronously, overcoming the frictional force between the passive ring 65 and the friction pad. The rotating ring 64 has a guide groove 66, and the passive ring 65 has a passive groove 67. The guide groove 66 is an inclined groove, and the passive groove 67 is opened along the radial direction of the passive ring 65. The slider 52 has a rectangular structure, and in actual use, it includes the following two forms and two strokes:

[0033] The first state is the initial state: This state is also the open state of the clamping plate 51. Let the end of the guide groove 66 and the passive groove 67 away from the mounting hole 41 be the starting end and the other end be the ending end. The clamping plate 51 is located between the starting end of the guide groove 66 and the passive groove 67. The gap between multiple sets of clamping plates 51 is opened. The sliders 52 at both ends of the clamping plate 51 are initially located in the starting end of the guide groove 66 and the passive groove 67.

[0034] Second state: This state is also the clamping state of the clamping plate 51 on the drill rod 2. The clamping plate 51 is located between the end points of the guide groove 66 and the passive groove 67. The gap between the multiple sets of clamping plates 51 is closed, and the multiple sets of clamping plates 51 form a circular hole. The drill rod 21 is located in the circular hole. The sliders 52 at both ends of the clamping plate 51 are located in the end points of the guide groove 66 and the passive groove 67.

[0035] The first stroke, i.e., the process of clamping plate 51 moving from the first state to the second state, involves the drive motor 61 driving the gear set 62 on the output shaft to rotate. The gear set 62 meshes and drives the gear ring 63 to rotate within the power head 4. The gear ring 63 drives the rotating ring 64 to rotate synchronously. The rotation of the rotating ring 64 causes the slider 52 to slide on the guide groove 66. Due to the inclined setting of the guide groove 66, the slider 52 on the rotating ring 64 will move from the starting end to the ending end of the guide groove 66. This movement is caused by the friction provided by the rubber pad on the driven ring 65. Force, so the passive ring 65 will not rotate synchronously with the rotating ring 64. Under the connecting action of the clamping plate 51, the slider 52 in the passive ring 65 moves from the starting end to the ending end of the passive groove 67, that is, it moves radially along the mounting hole 41. At this time, the clamping plate 51 moves synchronously with the slider 52, that is, it moves radially along the mounting hole 41, until both sets of sliders 52 move to the ending ends of the guide groove 66 and the passive groove 67. At this time, the clamping plate 51 is attached to the outer wall of the drill rod 2. Multiple sets of clamping plates 51 surround and squeeze the outer wall of the drill rod, reaching the second state, realizing the clamping of the drill rod 2.

[0036] The second stroke is the process in which the clamping plate 51 drives the drill rod 2 to rotate: the toothed ring 63 continues to drive the rotating ring 64 to rotate. Since the slider 52 has moved to the end of the guide groove 66 and the passive groove 67, neither the slider 52 nor the clamping plate 51 can continue to move. Under the contact of the groove walls of the guide groove 66 and the passive groove 67 and the connection of the clamping plate 51, the passive ring 65 is forced to rotate synchronously with the rotating ring 64, and the passive ring 65 overcomes the friction between the rubber pad and rotates synchronously with the rotating ring 64.

[0037] Similarly, when it is necessary to open the clamping plate 51, the drive motor 61 rotates in the opposite direction to reset the clamping plate 51 from the first state to the second state.

[0038] Furthermore, it also includes a locking mechanism 8, which is used to lock the drill rod 2 in the state where the clamping plate 51 holds it.

[0039] Specifically, the locking mechanism 8 is installed on the passive ring 65 and can be a buckle, etc. In the first stroke, the clamping plate 51 moves from the first state to the second state. After the slider 52 on the passive ring 65 moves from the starting end to the ending end, the locking mechanism 8 restricts the slider 52 in the ending end to prevent the slider 52 from resetting and sliding in the passive groove 67 in the second stroke, that is, when the drill rod 2 rotates. This allows the clamping plate 51 to maintain the clamping of the drill rod 2 during the rotation of the drill rod 2, so as to achieve stable power transmission.

[0040] In an optional embodiment, preferably, the limiting mechanism 7 includes a cylinder 71 and a baffle 72. The cylinder 71 is mounted on the power head 4, and the baffle 72 is located inside the power head 4. The output shaft of the cylinder 71 passes through the power head 4 and is connected to the baffle 72. A slot 68 is provided on the upper surface of the passive ring 65. The bottom of the baffle 72 is located in the slot 68 and forms a limiting abutment cooperation with the slot 68.

[0041] Specifically, cylinder 71 is fixedly connected to power head 4, baffle 72 is a plate-like structure, and slot 68 is located on one side of passive slot 67, that is, on the side where passive ring 65 follows the rotation direction of rotating ring 64. In the first state, cylinder 71 drives baffle 72 into slot 68 to limit passive ring 65 and prevent passive ring 65 from rotating synchronously with rotating ring 64. During the first stroke, baffle 72 is always in slot 68. After the first stroke, clamping plate 51 moves to the second state, locking mechanism 8 locks slider 52 in passive slot 67 to fix the position of clamping plate 51 in the second state, so that clamping plate 51 can hold drill rod 2 during the second stroke. After the first stroke, cylinder 71 drives baffle 72 to rise, baffle 72 is released from the restriction of passive ring 65, and the rotation of rotating ring 64 drives passive ring 65 to rotate synchronously, and drives drill rod 2 held by clamping plate 51 to rotate synchronously.

[0042] Furthermore, the clamping plate 51 is provided in multiple sets, and the multiple sets of clamping plates 51 are arranged in a circular and equidistant manner inside the power head 4.

[0043] Specifically, the clamping plate 51 is provided with multiple sets, and each set of clamping plates 51 is equipped with a corresponding limit mechanism 7. The multiple sets of clamping plates 51 are installed between the passive ring 65 and the rotating ring 64. In actual use, the multiple sets of clamping plates 51 move synchronously between the rotating ring 64 and the passive ring 65. After the first stroke, the multiple sets of clamping plates 51 simultaneously contact the drill rod 2 and press against the surface of the drill rod 2. The multiple sets of clamping plates 51 clamp the drill rod 2 from multiple directions, increasing the clamping force of the clamping plates 51 on the drill rod 2, so that the rotation of the clamping plates 51 can stably drive the drill rod 2 to rotate.

[0044] Furthermore, the limiting mechanism 7 also includes a support ring 73, and a baffle 72 is installed on the lower surface of the support ring 73.

[0045] Specifically, in the above embodiment, multiple sets of baffles 72 are provided, and each set of baffles 72 has a limit mechanism 7, that is, multiple sets of cylinders 71 are provided. In order to reduce the use of cylinders 71, a support ring 73 is provided between the cylinders 71 and the baffles 72. Multiple sets of baffles 72 are installed on the lower surface of the support ring 73. The output shaft of the cylinder 71 is connected to the baffles 72 through the support ring 73. A single or double set of cylinders 71 can drive the support ring 73 to descend stably, thereby driving multiple sets of baffles 72 to move into the slot 68.

[0046] Furthermore, the side of the clamping plate 51 closest to the central axis of the mounting hole 41 is an arc-shaped surface.

[0047] Specifically, the side of the clamping plate 51 closest to the central axis of the mounting hole 41 is an arc-shaped surface. The curvature of the arc-shaped surface matches the surface of the drill rod 2. In the second state, multiple sets of arc-shaped surfaces form a circular hole, and the drill rod 2 is located in the hole. The arc-shaped surface increases the contact area between the clamping plate 51 and the drill rod 2, and also improves the stability of the clamping plate 51 in holding the drill rod 2.

[0048] In an optional embodiment, preferably, the locking mechanism 8 includes a gear 81 and a locking block 83. The gear 81 is rotatably mounted on the slider 52 in the passive groove 67. The baffle 72 has a toothed groove 74 on the side near the passive groove 67. The gear 81 meshes with the baffle 72 through the toothed groove 74. A hook 82 is mounted on the side end face, i.e., the upper end face, of the gear 81. The locking block 83 is fixedly mounted on the upper surface of the passive ring 65. A limiting groove 84 is opened inside the locking block 83. The limiting groove 84 and one end of the hook 82 form a limiting abutment engagement.

[0049] Specifically, the locking mechanism 8 is provided with multiple sets and corresponding to multiple sets of clamping plates 51. In the first state, the slider 52 is located at the starting end of the passive groove 67. After the baffle 72 descends into the slot 68, since the gear 81 is a spur gear 81, when the baffle 72 descends, the upper gear teeth of the gear 81 enter the tooth groove 74 and the gear 81 meshes with the tooth groove 74.

[0050] During the first stroke, slider 52 slides within passive groove 67, and baffle 72 is also arranged radially along passive ring 65. The sliding of slider 52 drives gear 81 to move on baffle 72. Gear 81 meshes with tooth groove 74 and rotates, driving hook 82 on it to rotate synchronously. Since both hook 82 and limiting groove 84 are arc-shaped, when slider 52 approaches the end of passive groove 67, gear 81 drives the rotation of hook 82, causing one end of hook 82 to gradually extend into locking block 83. At the end of the first stroke, hook 82 extends out from one end of locking block 83 and is directly hooked onto locking block 83. Subsequently, cylinder 71 drives baffle 72 to rise and disengage. After the swivel 68, since the hook 82 can only extend out of the limiting groove 84 by rotation, and after the baffle 72 disengages from the swivel 68, the gear 81 loses engagement, and the slider 52 will not drive the gear 81 to rotate as it moves along the passive groove 67 to reset. Therefore, the hook 82 will not disengage from the locking block 83, and the slider 52 in the passive groove 67 is locked at the end point. With the connection of the clamping plate 51, the slider 52 in the guide groove 66 is also locked at the end point. After the sliders 52 at both ends of the clamping plate 51 are locked, the clamping plate 51 is locked in the second state, that is, the state of clamping the drill rod 2. In the second stroke, the rotation of the gear ring 63 will drive the drill rod 2 to rotate through the clamping plate 51.

[0051] When the clamping plate 51 needs to be reset from the second state to the first state, the drive motor 61 reduces the speed of the gear ring 63, and the cylinder 71 drives the support ring 73 to descend once. The baffle 72 moves between the multiple sets of gears 81. As the gear ring 63 drives the rotating ring 64 and the driven ring 65 to continue rotating, the gears 81 contact the baffle 72. At this time, the drive motor 61 stops working, and the baffle 72 is now directly above the slot 68. The cylinder 71 drives the support ring 73 to descend a second time, and the baffle 72 extends into the slot 68. The baffle 72 limits the passive ring 65. At this time, the drive motor 61 drives the gear ring 63 to rotate in the opposite direction and drives the rotating ring 64 to rotate in the opposite direction. The reverse rotation of the rotating ring 64 drives the clamping plate 51 to move away from the drill rod 2. The gear 81 on the slider 52 in the passive groove 67 meshes with the gear groove 74. The gear 81 rotates in the opposite direction and the hook 82 rotates out of the limiting groove 84 until both sets of sliders 52 move to the starting end of the guide groove 66 and the passive groove 67. The clamping plate 51 releases its grip on the drill rod 2.

[0052] In another embodiment of the invention, a guide ramp is arranged on the side of the clamping plate 51 near the drill rod 2.

[0053] Specifically, the guide ramp is inclined and can be an inclined plate. In the first state, the clamping plate 51 is open and the plate is inclined in the mounting hole 41. At this time, the upper surface of the plate forms the guide ramp. When the drill rod 2 needs to descend through the power head 4, the guide ramp can guide the drill rod 2 to the center position of the mounting hole 41, so that the axis of the drill rod 2 is collinear with the central axis of the mounting hole 41. Furthermore, the plate can prevent the drill rod 2 from touching the inner wall of the power head 4 during the movement, thus avoiding collision damage between the drill rod 2 and the power head 4.

[0054] Furthermore, a guide plate 53 is movably installed on one side of the clamping plate 51 near the drill rod 2, and a transmission mechanism 9 is installed inside the clamping plate 51. The transmission mechanism 9 is used to drive the guide plate 53 to rotate on the clamping plate 51 during the movement of the clamping plate 51.

[0055] Specifically, the guide plate 53 is rotatably connected to the outer wall of the clamping plate 51 via a hinge shaft. In the first state, the guide plate 53 is arranged at an angle. At this time, the guide plate 53 plays a guiding role when the drill rod 2 is installed. When the drill rod 2 needs to be clamped, the sliders 52 at both ends of the clamping plate 51 are in the guide groove 66 and the passive groove 67, and drive the clamping plate 51 and the guide plate 53 to move closer to the drill rod 2. In order to avoid the guide plate 53 from colliding with the drill rod 2 and affecting the movement of the clamping plate 51, the transmission mechanism 9 drives the guide plate 53 to rotate during the movement of the clamping plate 51 and fit against the outer wall of the clamping plate 51, so that the clamping plate 51 can clamp the drill rod 2.

[0056] Furthermore, the transmission mechanism 9 includes a lead screw 91 and a connecting rod 93. The lead screw 91 is installed inside the clamping plate 51 and its two ends are rotatably connected to the inner wall of the clamping plate 51. The upper end of the lead screw passes through the clamping plate 51 and the slider 52 and is connected to the gear 81. A lead screw nut 92 is installed on the outer wall of the lead screw 91. One end of the connecting rod 93 is rotatably connected to the guide plate 53, and the other end is rotatably connected to the lead screw nut 92.

[0057] Specifically, a limiting rod is installed inside the clamping plate 51. The limiting rod is parallel to the lead screw 91, passes through the lead screw nut 92, and forms a sliding guide engagement with the lead screw nut 92. During the first stroke, the rotation of the gear 81 drives the lead screw 91 to rotate inside the clamping plate 51. The rotation of the lead screw 91 drives the lead screw nut 92 and the connecting rod 93 to descend. The descending connecting rod 93 pulls the guide plate 53 to rotate on the clamping plate 51. After the first stroke, one side of the guide plate 53 is attached to the surface of the clamping plate 51, and the other side is in contact with the drill pipe 2. The clamping plate 51 clamps the drill pipe 2 through the guide plate 53. Similarly, when the clamping plate 51 needs to be reset from the second state to the first state, the gear 81 drives the lead screw 91 to rotate in the opposite direction, the lead screw nut 92 rises, and the connecting rod 93 lifts the guide plate 53, causing it to reset to an inclined position.

[0058] Furthermore, an elastic telescopic plate 54 is installed on the outer wall of the guide plate 53.

[0059] Specifically, a spring is installed inside the elastic telescopic plate 54. After the first stroke, one side of the guide plate 53 is attached to the surface of the clamping plate 51, and the other side is in contact with the drill rod 2. The clamping plate 51 clamps the drill rod 2 through the guide plate 53. The elastic telescopic plate 54 is installed on the side of the guide plate 53 that is in contact with the drill rod 2. The elastic force provided by the elastic telescopic rod can further improve the clamping force on the drill rod 2, and the arc-shaped surface is the side of the elastic telescopic plate 54 that is in contact with the drill rod 2.

[0060] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hydraulic construction device, comprising a mast assembly (1) and a drill rod (2), wherein a lifting device (3) and a power head (4) are mounted on the mast assembly (1), the drill rod (2) is connected to the power head (4) in a transmission manner, and a drill bit (21) is mounted on the bottom of the drill rod (2), characterized in that, The power head (4) is also equipped with a clamping mechanism (5) and a drive mechanism (6). The drive mechanism (6) is used to clamp the drill rod (2) through the clamping mechanism (5) when driving the drill rod (2) to rotate. The drive mechanism (6) includes a drive motor (61), a gear ring (63), a rotating ring (64), and a driven ring (65). The drive motor (61) is fixedly mounted on the power head (4). A gear set (62) is installed inside the power head (4). The output shaft of the drive motor (61) extends into the power head (4) and is connected to the gear set (62). A mounting hole (41) is provided inside the power head (4). The gear ring (63) is rotatably mounted in the mounting hole (41) and meshes with the gear set (62). The rotating ring (64) is fixedly connected to the gear ring (63). The driven ring (65) is located above the rotating ring (64) and is rotatably connected to the gear set (65). The inner wall of the power head (4) includes a clamping mechanism (5) comprising a clamping plate (51), which is installed between the rotating ring (64) and the passive ring (65). The rotating ring (64) has a guide groove (66), and the passive ring (65) has a passive groove (67). Slider (52) is fixedly installed at both the upper and lower ends of the clamping plate (51). The slider (52) is located in the guide groove (66) and the passive groove (67) and forms a sliding guide fit with the guide groove (66) and the passive groove (67). A limit mechanism (7) is installed between the passive ring (65) and the inner wall of the power head (4). The limit mechanism (7) is used to limit the rotation of the passive ring (65).

2. The hydraulic construction device according to claim 1, characterized in that, It also includes a locking mechanism (8) for locking the drill rod (2) in the state where the clamping plate (51) holds the drill rod (2).

3. The hydraulic construction device according to claim 1, characterized in that, The limiting mechanism (7) includes a cylinder (71) and a baffle (72). The cylinder (71) is mounted on the power head (4), and the baffle (72) is located inside the power head (4). The output shaft of the cylinder (71) passes through the power head (4) and is connected to the baffle (72). The upper surface of the passive ring (65) is provided with a slot (68). The bottom of the baffle (72) is located in the slot (68) and forms a limiting contact engagement with the slot (68).

4. A hydraulic construction device according to claim 3, characterized in that, The clamping plate (51) is provided in multiple sets, and the multiple sets of clamping plates (51) are arranged in a circular and equidistant manner inside the power head (4).

5. A hydraulic construction device according to claim 3, characterized in that, The limiting mechanism (7) also includes a support ring (73), and a baffle (72) is installed on the lower surface of the support ring (73).

6. A hydraulic construction device according to claim 1, characterized in that, The side of the clamp (51) near the central axis of the mounting hole (41) is an arc-shaped surface.

7. A hydraulic construction device according to claim 5, characterized in that, The locking mechanism (8) includes a gear (81) and a locking block (83). The gear (81) is rotatably mounted on the slider (52) in the passive groove (67). The baffle (72) has a toothed groove (74) on the side near the passive groove (67). The gear (81) meshes with the baffle (72) through the toothed groove (74). A hook (82) is mounted on the gear (81). The locking block (83) is fixedly mounted on the upper surface of the passive ring (65). A limiting groove (84) is opened inside the locking block (83). The limiting groove (84) and the hook (82) form a limiting abutment fit.

8. A hydraulic construction device according to any one of claims 1-7, characterized in that, The clamp (51) has a guide slope on the side near the drill rod (2).

9. A hydraulic construction device according to claim 8, characterized in that, A guide plate (53) is movably installed on one side of the clamping plate (51) near the drill rod (2). A transmission mechanism (9) is installed inside the clamping plate (51). The transmission mechanism (9) is used to drive the guide plate (53) to rotate on the clamping plate (51) during the movement of the clamping plate (51).

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