A caterpillar type reverse circulation drilling rig

Abstract

The application relates to a caterpillar reverse circulation drilling machine, which comprises a drilling machine, an adjusting rod arranged on the drilling machine, a base arranged at the output end of the adjusting rod, a drill bit installed on the base, and a cooling unit arranged on the drill bit; a connecting unit connected between the base and the drill bit, wherein the connecting unit comprises four fixed clamping plates fixedly connected to the outer wall of the drill bit, a limiting clamping plate slidingly connected to the upper and lower sides of each fixed clamping plate, and a cylinder fixedly connected to the side of the limiting clamping plate away from the fixed clamping plate; a discharging disc slidingly connected to the outer wall of the base; and an adjusting curved plate rotatably connected between the discharging disc and the base. The caterpillar reverse circulation drilling machine has the beneficial effects that the drill bit can be quickly installed and disassembled through the mutual cooperation of the structures, the replacement efficiency of the drill bit by workers is improved, the contact of workers during the disassembly of the drill bit is reduced, and the workers will not be harmed in the high-temperature state after the drill bit is used.

Description

Technical Field

[0001] This invention belongs to the field of drilling rig technology and relates to a tracked reverse circulation drilling rig. Background Technology

[0002] Tracked reverse circulation drilling rigs achieve convenient movement via a tracked chassis and utilize a hydraulic walking mechanism to ensure stable operation. Their core principle is as follows: during drilling, mud or water flows naturally into the bottom of the hole through the annular gap at the wellhead. Under the negative pressure created by pump suction or air lift, the mixture carrying drill cuttings is drawn upwards at high speed through the drill pipe cavity back to the surface, where it is purified by sedimentation and then recirculated.

[0003] When a tracked reverse circulation drilling rig is in use, the drill bit part will have a high surface temperature when it needs to be disassembled due to the long-term operation and rotation. This makes disassembly difficult for the workers and hinders the disassembly work. Disassembly can only be carried out after subsequent cooling. In addition, particulate matter may adhere to the connection point of the drill bit during operation, which will also hinder disassembly. Summary of the Invention

[0004] The purpose of this invention is to provide a tracked reverse circulation drilling rig that can solve the problems of high temperature on the drill bit surface during disassembly, which makes disassembly inconvenient for workers and hinders the disassembly work, requiring subsequent cooling before disassembly, and the problem of particulate matter adhering to the connection point of the drill bit during operation, which also hinders disassembly.

[0005] According to the technical solution provided by the present invention: a tracked reverse circulation drilling rig includes a drilling rig, an adjusting rod is provided on the drilling rig, a base is provided at the output end of the adjusting rod, a drill bit is installed on the base, and a cooling unit is provided on the drill bit;

[0006] A connecting unit is connected between the base and the drill bit. The connecting unit includes a fixed clamping plate, which is fixedly connected to the outer wall of the drill bit. Four fixed clamping plates are evenly distributed. Limiting clamping plates are slidably connected to the upper and lower sides of the fixed clamping plates. A cylinder is fixedly connected to the side of the limiting clamping plate away from the fixed clamping plate. A discharge plate is slidably connected to the outer wall of the base. An adjusting curved plate is rotatably connected between the discharge plate and the base. A discharge curved plate is fixedly connected to the outer wall of the adjusting curved plate. A push plate is fixedly connected to the inner wall of the discharge curved plate. The push plate is slidably connected to the fixed clamping plate.

[0007] Preferably, a movable bracket is connected between the unloading disc and the adjusting curved plate, and the movable bracket is fixedly connected to the unloading disc. The outer wall of the adjusting curved plate is provided with a movable groove that matches the movable bracket.

[0008] Preferably, the cooling unit includes a buffer water bladder, which is fixedly connected to the lower end of the base. A protective ring is fixedly connected to the lower end of the base. The protective ring is located on the outer wall of the buffer water bladder. A limit ring is slidably connected to the outer wall of the protective ring, and the limit ring is fixedly connected to the drill bit. An impact component is connected to the top surface of the buffer water bladder.

[0009] Preferably, a curved plate is fixedly connected to the clockwise side of the limiting plate, and a ball screw is connected between the inner walls of the upper and lower curved plates.

[0010] Preferably, the impact assembly includes a water valve, which is fixedly connected to the upper end of the buffer water bladder and located below the unloading disc. A water filling pipe is fixedly connected to the inner wall of the water valve, and water suction pipes are fixedly connected to the two ends of the water filling pipe away from the buffer water bladder. A balance water belt is fixedly connected to one end of the water filling pipe, and multiple water spray plates are fixedly connected to the inner wall of the balance water belt. The four water spray plates are evenly distributed and their positions correspond to the fixed plate. A connecting bracket is fixedly connected to the inner wall of the unloading disc, and an insert plate is fixedly connected to one end of the unloading disc. The insert plate is slidably connected to the water filling pipe to open or close the flow of water inside the water filling pipe.

[0011] Preferably, the upper end of the buffer water bladder is fixedly connected to two water pipes, which are the inlet pipe and the outlet pipe, respectively.

[0012] Preferably, a rotating plate is rotatably connected to the top surface of the unloading disc via a shaft, and screws are fixedly connected to the inner wall of the rotating plate via threads. The screws penetrate the rotating plate and extend into the interior of the base, and a sealing gasket is fixedly connected to the bottom of the unloading disc.

[0013] Preferably, the outer wall of the base is provided with a triangular groove that matches the unloading disc, and the unloading disc is moving up and down on the outer wall of the base.

[0014] The tracked reverse circulation drilling rig provided in this embodiment of the invention has the following advantages:

[0015] 1. Moving the unloading tray: The operator moves the unloading tray downwards using a machine. Then, the unloading tray moves the adjusting curved plate. The adjusting curved plate, through the unloading curved plate, moves the push plate to push the fixed clamping plate, causing the fixed clamping plate to slide inside the groove to the vertical side of the groove. Then, through its own weight and manual cooperation, the machine can quickly disassemble the drill bit. Through the cooperation between the structures, the drill bit can be quickly installed and disassembled, thereby improving the efficiency of manual drill bit replacement and reducing manual contact during drill bit disassembly. This prevents injury to the operator from the high temperature after the drill bit has been used.

[0016] 2. The liquid enters the balancing water belt through the pump pipe. After the pressure is balanced inside the balancing water belt, the liquid is sprayed out through four impact components. The liquid enters the L-shaped groove and performs high-pressure spraying on the fixed plate, cleaning up the impurities accumulated inside the groove. This improves disassembly efficiency, prevents debris from affecting the disassembly process, and cools the high-temperature drill bit to prevent injury to the disassembly workers. The low-temperature drill bit also facilitates the disassembly work. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the connection unit structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the connection structure between the base and the drill bit of the present invention.

[0020] Figure 4 This is a schematic diagram of the cooling unit structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the cooling component structure of the present invention.

[0022] Figure 6 This is a schematic diagram of the unloading disc connection structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the insert structure of the present invention.

[0024] Figure 8 This is a schematic diagram of the connection unit structure of the present invention.

[0025] Figure Descriptions: 1. Drilling rig; 2. Adjusting rod; 3. Base; 4. Drill bit; 5. Cooling unit; 51. Buffer water bladder; 52. Limiting ring; 53. Protective ring; 54. Water pipe; 55. Impact assembly; 551. Water valve; 552. Water filling pipe; 553. Water extraction pipe; 554. Balance water belt; 555. Water spray plate; 556. Connecting bracket; 557. Insert plate; 6. Connecting unit; 61. Limiting plate; 62. Cylinder; 63. Curved plate; 64. Ball screw; 65. Unloading disc; 651. Rotating plate; 652. Screw; 653. Sealing base gasket; 66. Adjusting curved plate; 67. Moving seat; 68. Moving groove; 69. Fixed plate; 610. Unloading curved plate; 611. Push plate. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0027] like Figure 1-8 As shown, the present invention is a tracked reverse circulation drilling rig; including a drilling rig 1, an adjusting rod 2 on the drilling rig 1, a base 3 at the output end of the adjusting rod 2, a drill bit 4 mounted on the base 3, and a cooling unit 5 on the drill bit 4;

[0028] A connecting unit 6 is connected between the base 3 and the drill bit 4. The connecting unit 6 includes a fixed clamping plate 69, which is fixedly connected to the outer wall of the drill bit 4. Four fixed clamping plates 69 are distributed at equal distances. Limiting plates 61 are slidably connected to the upper and lower sides of the fixed clamping plates 69. A cylinder 62 is fixedly connected to the side of the limiting plates 61 away from the fixed clamping plates 69. A discharge plate 65 is slidably connected to the outer wall of the base 3. An adjusting curved plate 66 is rotatably connected between the discharge plate 65 and the base 3. A discharge curved plate 610 is fixedly connected to the outer wall of the adjusting curved plate 66. A push plate 611 is fixedly connected to the inner wall of the discharge curved plate 610. The push plate 611 is slidably connected to the fixed clamping plate 69.

[0029] Specifically, when using this device, the drill rig 1 is used to move the device, which in turn moves the base 3 and drill bit 4 to the work site. The base 3 and drill bit 4 are fixedly connected by the connecting unit 6. During the use of the drill bit 4, the cooling unit 5 is used to cool it down, reducing its temperature during operation. When disassembling the drill bit 4 through the connecting unit 6, the cooling unit 5 performs high-pressure flushing at the connection between the base 3 and the drill bit 4 to remove particulate matter adhering to the connection, ensuring smooth disassembly. When installing the drill bit 4, the four fixing plates 69 fixed on the surface of the drill bit 4 need to be aligned with the L-shaped grooves opened on the inner wall of the base 3, so that the fixing plates 69 are twisted along the grooves until they contact the limiting plate 61. This design allows the fixed clamping plate 69 to be squeezed and limited by the upper and lower limiting clamping plates 61. At the same time, the two limiting clamping plates 61, together with the cylinder 62, act as a buffer. When disassembly is required, only the unloading plate 65 needs to be moved. The operator uses a machine to move the unloading plate 65 downward. Then, the unloading plate 65 moves the adjusting curved plate 66. The adjusting curved plate 66, through the unloading curved plate 610, moves the push plate 611 to push the fixed clamping plate 69, causing the fixed clamping plate 69 to slide inside the groove to the vertical side of the groove. Then, it can be quickly disassembled by its own weight and with the help of the operator. Through the cooperation between the structures, the drill bit 4 can be quickly installed and disassembled, thereby improving the efficiency of manual replacement of the drill bit 4 and reducing the contact during manual disassembly of the drill bit 4. This prevents the operator from being injured by the high temperature after the drill bit 4 has been used.

[0030] Preferably, a movable bracket 67 is connected between the unloading disc 65 and the adjusting curved plate 66, and the movable bracket 67 is fixedly connected to the unloading disc 65. The outer wall of the adjusting curved plate 66 is provided with a movable groove 68 that matches the movable bracket 67.

[0031] Specifically, when using this device, the operator pushes the unloading disc 65 to move using a tool. The unloading disc 65 drives the movable bracket 67 to slide inside the movable groove 68 opened on the outer wall of the adjusting curved plate 66. Because the movable groove 68 is set at an inclination, when the unloading disc 65 drives the movable bracket 67 to slide inside the movable groove 68, the movable bracket 67 drives the adjusting curved plate 66 to rotate, causing the adjusting curved plate 66 to drive the unloading curved plate 610 to slide. The unloading curved plate 610 rotates on the surface of the base 3, driving the push plate 611 to push the fixed bracket 69, causing the fixed bracket 69 to move from the horizontal groove to the vertical groove position. The disassembly work is completed manually or by the weight of the drill bit 4 itself. The disassembly efficiency is improved by using the tool manually for quick disassembly, and the time of manual contact by the operator is reduced. Thus, the high temperature of the drill bit 4 will not cause any obstacles to the operator.

[0032] Preferably, the cooling unit 5 includes a buffer water bladder 51, which is fixedly connected to the lower end of the base 3. A protective ring 53 is fixedly connected to the lower end of the base 3. The protective ring 53 is located on the outer wall of the buffer water bladder 51. A limit ring 52 is slidably connected to the outer wall of the protective ring 53, and the limit ring 52 is fixedly connected to the drill bit 4. An impact component 55 is connected to the top surface of the buffer water bladder 51.

[0033] Specifically, the cooling unit 5 includes a buffer water bladder 51 to cool the drill bit 4 during operation. Simultaneously, the buffer water bladder 51 provides a buffering effect through the placement of protective rings 53. A limiting ring 52 slides on the outer wall of the protective ring 53. While the limiting ring 52 provides a limiting function, the protective ring 53 limits the movement path of the limiting ring 52, preventing friction damage to the buffer water bladder 51 during movement. It also prevents the limiting ring 52 from squeezing the surface of the buffer water bladder 51 due to friction during its movement, thus protecting the structure of the buffer water bladder 51. This, combined with the cylinder 62, provides buffering protection during the operation of the drill bit 4.

[0034] Ideally, a curved plate 63 is fixedly connected to the clockwise side of the limiting plate 61, and a ball screw 64 is connected between the inner walls of the upper and lower curved plates 63.

[0035] Specifically, when the curved plate 63 and the ball screw 64 work together, the upper and lower curved plates 63 move synchronously when the limiting plate 61 moves the curved plate 63. This causes the upper and lower curved plates 63 to slide simultaneously on the outer wall of the ball screw 64, thus achieving a buffering effect for the upper and lower cylinders 62. The upper and lower curved plates 63 move in the threaded state on the surface of the ball screw 64. When the base 3 and the drill bit 4 are stationary, the fixing plate 69 can stop at the center of the L-shaped groove, thus maintaining a balanced state during disassembly and facilitating disassembly by the workers.

[0036] Preferably, the impact component 55 includes a water valve 551, which is fixedly connected to the upper end of the buffer water bladder 51. The water valve 551 is located below the unloading plate 65. A water filling pipe 552 is fixedly connected to the inner wall of the water valve 551. A water suction pipe 553 is fixedly connected to both ends of the water filling pipe 552 away from the buffer water bladder 51. A balance water belt 554 is fixedly connected to one end of the water suction pipe 553 and the balance water belt 554 is fixedly connected to the inner wall of the balance water belt 554. The four water spray plates 555 are evenly distributed. The position of the water spray plates 555 corresponds to the fixed clamping plate 69. A connecting bracket 556 is fixedly connected to the inner wall of the unloading plate 65. A plug plate 557 is fixedly connected to one end of the connecting bracket 556 and the unloading plate 65. The plug plate 557 is slidably connected to the water filling pipe 552 to open or close the flow of water inside the water filling pipe 552.

[0037] Specifically, when the worker needs to disassemble the drill bit 4, the unloading disc 65 will be moved downwards mechanically. This downward movement of the unloading disc 65 will cause the connecting bracket 556 to move downwards, which in turn will cause the insert plate 557 to move downwards. The downward movement of the insert plate 557 will open the valve in the middle of the water filling pipe 552, allowing the liquid inside the buffer water bladder 51 to flow inside the water filling pipe 552. The liquid flowing inside the water filling pipe 552 enters the water filling pipe 552 under pressure. The pressure inside the water filling pipe 552 comes from the external water pump supplying water to the buffer water bladder 51. After the opening is made, the liquid will flow through the water filling pipe 552 to the inside of the water pumping pipe 553, and then enter the inside of the balance water belt 554 through the water pumping pipe 553. After the liquid balances the pressure inside the balance water belt 554, it will be sprayed out through the four impact components 55. The liquid will enter the inside of the L-shaped groove to perform high-pressure spraying on the fixed plate 69, cleaning up the impurities accumulated inside the groove, thereby improving the disassembly efficiency and preventing fragments from affecting the disassembly. The outflowing liquid also cools down the high-temperature drill bit 4, preventing the high-temperature drill bit 4 from causing injury to the disassembly personnel, and the low-temperature drill bit 4 makes the disassembly work easier.

[0038] Ideally, two water pipes 54 are fixedly connected to the upper end of the buffer water bladder 51, which are the inlet pipe and the outlet pipe, respectively.

[0039] Specifically, two water pipes 54 are installed. One side is an inlet pipe connected to a water pump to draw liquid from the outside and send it into the buffer water bladder 51. When the drill bit 4 is working, it moves up and down through the buffering action, squeezing the buffer water bladder 51 to deform and change the water, thereby maintaining the low temperature of the liquid inside the buffer water bladder 51. When squeezed, the liquid is discharged through the outlet pipe on the other side, thereby realizing the recycling of the liquid and ensuring that the liquid maintains a cooling effect.

[0040] Preferably, the top surface of the unloading disc 65 is rotatably connected to a rotating plate 651 via a shaft, and the inner wall of the rotating plate 651 is fixedly connected to a screw 652 via a thread. The screw 652 penetrates the rotating plate 651 and extends into the interior of the base 3. A sealing pad 653 is fixedly connected to the bottom of the unloading disc 65.

[0041] Specifically, the rotating plate 651 is fixed by screws 652. After removing the screws 652, the rotating plate 651 rotates and tilts to one side of the unloading disc 65 due to its own gravity. Then, the worker uses a sledgehammer or similar tool to strike the rotating plate 651, causing the rotating plate 651 to move the adjusting curved plate 66 downward. The unloading disc 65 moves the moving bracket 67 to slide inside the moving groove 68, causing the adjusting curved plate 66 to rotate, thus completing the disassembly of the drill bit 4. The sealing bottom pad 653 provides a simple elastic protection effect, preventing the groove on the outer wall of the base 3 that accommodates the movement of the unloading disc 65 from being blocked by external dirt during use, thus ensuring smooth movement of the structure during use.

[0042] Preferably, the outer wall of the base 3 is provided with a triangular groove that matches the unloading disc 65, and the unloading disc 65 is moving up and down on the outer wall of the base 3.

[0043] Specifically, a triangular groove is set between the unloading disc 65 and the base 3 to restrict the movement trajectory of the unloading disc 65, so that when the unloading disc 65 is moved manually, the movement trajectory remains straight up and down, thus preventing the unloading disc 65 from being blocked and stuck due to deviation of the force point.

[0044] The work process is as follows:

[0045] When this device is working, the base 3 and drill bit 4 are first moved to the working location by the drilling machine 1. The base 3 and drill bit 4 are fixedly connected by the connecting unit 6. When installing the drill bit 4, the four fixing plates 69 fixed on the surface of the drill bit 4 need to be aligned with the L-shaped groove opened on the inner wall of the base 3, so that the fixing plates 69 are twisted along the groove to the innermost side and contact the limiting plate 61. At this time, the upper and lower limiting plates 61 squeeze and limit the fixing plates 69, and at the same time, the cylinder 62 plays a buffering role. When the limiting plate 61 moves the curved plate 63, the upper and lower curved plates 63 move synchronously and slide on the outer wall of the ball screw 64, so that the upper and lower cylinders 62 buffer synchronously. The movement in the threaded state keeps the fixing plates 69 in the center position of the horizontal groove of the L-shaped groove when stationary, maintaining a balanced state.

[0046] During the operation of drill bit 4, cooling unit 5 continuously cools the water. An external water pump sends liquid into buffer water bladder 51 through the inlet pipe. When buffer water bladder 51 is squeezed and deformed, the water is replaced. The liquid is discharged through the outlet pipe on the other side, achieving circulation to maintain the cooling effect. At the same time, the cooperation of protective ring 53 and limiting ring 52 limits and protects buffer water bladder 51 from friction, and works together with cylinder 62 to achieve a buffering effect.

[0047] When it is necessary to disassemble drill bit 4, the operator uses a tool or a hand sledgehammer to strike the rotating plate 651, causing the unloading disc 65 to move vertically up and down along the triangular groove on the outer wall of the base 3. The unloading disc 65 drives the movable locator 67 to slide within the movable groove 68 of the adjusting curved plate 66, thereby causing the adjusting curved plate 66 to rotate. The adjusting curved plate 66, through the unloading curved plate 610, drives the push plate 611 to push the fixed locator 69, moving it from the horizontal groove to the vertical groove position. Then, the unloading disc 65 is quickly disassembled manually or by its own weight. As the unloading disc 65 moves downward, it simultaneously drives the connecting bracket 556 and the insert plate 557. As the device moves downward, the insert plate 557 opens the valve in the middle section of the water filling pipe 552. Liquid in the buffer water bladder 51 enters the water filling pipe 552 under the pressure of an external water pump, and flows along the suction pipe 553 into the balance water belt 554. After pressure balance, high-pressure liquid is sprayed out by four spray plates 555 corresponding to the fixed clamping plate 69, performing high-pressure flushing on the inside of the L-shaped groove and the fixed clamping plate 69 to remove accumulated particulate impurities and ensure smooth disassembly. Simultaneously, the flowing liquid cools the drill bit 4, which is at a high temperature, preventing burns to personnel during disassembly and making the drill bit 4 cooler for subsequent operations.

[0048] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A tracked reverse circulation drilling rig, characterized in that, The drilling rig (1) is equipped with an adjusting rod (2), and the output end of the adjusting rod (2) is equipped with a base (3). A drill bit (4) is installed on the base (3), and a cooling unit (5) is installed on the drill bit (4). The connecting unit (6) is connected between the base (3) and the drill bit (4). The connecting unit (6) includes a fixed plate (69). The fixed plate (69) is fixedly connected to the outer wall of the drill bit (4). The four fixed plates (69) are distributed at equal distances. The upper and lower sides of the fixed plate (69) are slidably connected to the limit plate (61). The side of the limit plate (61) away from the fixed plate (69) is fixedly connected to the cylinder (62). The outer wall of the base (3) is slidably connected to the unloading plate (65). The unloading plate (65) and the base (3) are rotatably connected to the adjusting plate (66). The outer wall of the adjusting plate (66) is fixedly connected to the unloading plate (610). The inner wall of the unloading plate (610) is fixedly connected to the push plate (611). The push plate (611) is slidably connected to the fixed plate (69).

2. The tracked reverse circulation drilling rig according to claim 1, characterized in that: A movable bracket (67) is connected between the unloading plate (65) and the adjusting curved plate (66), and the movable bracket (67) is fixedly connected to the unloading plate (65). The outer wall of the adjusting curved plate (66) is provided with a movable groove (68) that matches the movable bracket (67).

3. A tracked reverse circulation drilling rig according to claim 1, characterized in that: The cooling unit (5) includes a buffer water bladder (51), which is fixedly connected to the lower end of the base (3). A protective ring (53) is fixedly connected to the lower end of the base (3). The protective ring (53) is located on the outer wall of the buffer water bladder (51). A limit ring (52) is slidably connected to the outer wall of the protective ring (53), and the limit ring (52) is fixedly connected to the drill bit (4). An impact component (55) is connected to the top surface of the buffer water bladder (51).

4. A tracked reverse circulation drilling rig according to claim 1, characterized in that: A curved plate (63) is fixedly connected to the clockwise side of the limiting plate (61), and a ball screw (64) is connected between the inner walls of the upper and lower curved plates (63).

5. A tracked reverse circulation drilling rig according to claim 3, characterized in that: The impact assembly (55) includes a water valve (551), which is fixedly connected to the upper end of the buffer water bladder (51). The water valve (551) is located below the discharge plate (65). A water filling pipe (552) is fixedly connected to the inner wall of the water valve (551). A water suction pipe (553) is fixedly connected to both ends of the water filling pipe (552) away from the buffer water bladder (51). A balance water belt (554) is fixedly connected to one end of the water suction pipe (553) along with the water filling pipe (552). 554) Multiple water spray plates (555) are fixedly connected to the inner wall. The four water spray plates (555) are evenly distributed. The position of the water spray plates (555) corresponds to the fixed plate (69). A connecting bracket (556) is fixedly connected to the inner wall of the unloading plate (65). The connecting bracket (556) is fixedly connected to one end of the unloading plate (65) with a plug plate (557). The plug plate (557) is slidably connected to the water filling pipe (552) to open or close the flow of water inside the water filling pipe (552).

6. A tracked reverse circulation drilling rig according to claim 3, characterized in that: Two water pipes (54) are fixedly connected to the upper end of the buffer water bladder (51), which are the inlet pipe and the outlet pipe, respectively.

7. A tracked reverse circulation drilling rig according to claim 5, characterized in that: The top surface of the unloading disc (65) is rotatably connected to a rotating plate (651) via a shaft. The inner wall of the rotating plate (651) is fixedly connected to a screw (652) via a thread. The screw (652) passes through the rotating plate (651) and extends into the interior of the base (3). A sealing pad (653) is fixedly connected to the bottom of the unloading disc (65).

8. A tracked reverse circulation drilling rig according to claim 7, characterized in that: The outer wall of the base (3) is provided with a triangular groove that matches the unloading plate (65), and the unloading plate (65) is moving up and down on the outer wall of the base (3).

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