Driving device for pneumatic drill rod and pneumatic drill rod assembly
By using a pneumatic drill bit drive device to drive a piston body with high-pressure gas to strike the drill bit, the problems of insertion stability and complex structure of existing drill bits are solved, and efficient soil loosening and fertilization operations are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 山东特斯拉机器人有限公司
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-15
AI Technical Summary
Existing methods of driving drill rods into the soil layer suffer from problems such as cumbersome operation, poor stability, and complex structure. In particular, the stability of piston-type and air hammer-type drill rod devices is affected by the placement of the drill rod head.
A pneumatic drill rod drive device is adopted, which uses high-pressure gas to drive the piston body to move up and down inside the drill rod. The inertia and gravity of the piston body are used to strike the drill rod, simplifying the structure and improving stability. Soil loosening and fertilization are achieved through a hollow pipe.
It enables efficient insertion of the drill rod and loosening of the soil for fertilization, simplifies the operation, improves the reliability and stability of the structure, and avoids the influence of complex structures.
Smart Images
Figure CN224234245U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural and forestry machinery and equipment technology, specifically to a pneumatic drill rod used for loosening soil and applying fertilizer, and a pneumatic drill rod drive device for driving the pneumatic drill rod deep into the soil layer. Background Technology
[0002] With the development of agricultural and forestry technologies, precision cultivation techniques for trees (mainly fruit trees) and crops have been greatly developed and applied. One of the main techniques is to apply fertilizer directly to the roots of trees or crops. This avoids fertilizer loss caused by applying fertilizer to the soil surface, and fertilizer applied to the soil layer is more likely to reach the root system and be absorbed by the plant.
[0003] Existing technologies offer various methods for releasing fertilizer to plant roots. A drill bit is one commonly used method. However, existing drill bits are used in two ways: one involves manually inserting the bottom of the drill bit into the soil using a hammer, which is tiring for the operator; the other involves using a striking component at the top of the drill bit to insert the bottom into the soil. There are two main striking methods: one is using piston movement, such as the deep soil loosening and fertilizing machine disclosed in CN2569541Y, which uses a cylinder located at the top of the drill bit to drive the piston up and down to strike the drill bit. This method, because the piston is already at the top of the drill bit, adding a cylinder results in a large head mass, significantly affecting the stability of the drill bit. The other method is using an air hammer, such as the pneumatic soil loosening and fertilizing device disclosed in CN106879268A. This method requires complex piping to control and drive the up and down movement of the air hammer. Utility Model Content
[0004] To address some problems with existing methods of driving drill rods into the soil, this application provides a method for starting a drill rod.
[0005] The driving device for a pneumatic chisel provided in this application embodiment includes a main body, which includes a first end and a second end. A cavity extending from the first end to the second end is provided inside the main body, and the cavity is surrounded by a main body shell. A first gas channel is provided along the main body shell from the first end to the second end of the main body. A first vent is provided at the second end of the main body, and the first vent connects the first gas channel and the cavity. A second vent is provided at the first end, and the second vent connects the first gas channel and the external space of the main body. A third vent is also provided at the first end, and the third vent connects the external space of the cavity. A fourth vent is also provided on the main body shell, and the fourth vent connects the cavity and the external space of the main body. The fourth vent is a predetermined distance from the bottom wall of the cavity at the second end. A piston body, whose shape and size are matched to the cavity, is provided inside the cavity.
[0006] It also includes a device housing, which is fitted onto the main body housing. The device housing has a second gas channel connected to the sealed space formed around the groove and connected to the gas supply port.
[0007] The pneumatic drill bit driving device provided in this application embodiment supplies high-pressure gas through an air supply port. The high-pressure gas enters the sealed space formed between the first end of the main body and the outer shell of the device. One path connects to the first gas channel through the second vent hole and then to the cavity located at the bottom of the piston body through the first vent hole. The other path enters the cavity located at the top of the piston body through the third vent hole. Since the cavity at the top of the piston body is connected to the external space through the fourth vent hole, the high-pressure gas entering through the third vent hole quickly exits through the fourth vent hole. No significant high pressure is formed in the cavity at the top of the piston body, while the cavity at the bottom of the piston body is a closed space, and its pressure increases rapidly as high-pressure gas enters. The increased pressure quickly pushes the piston body upward. After the top of the piston body passes the fourth vent hole, the cavity at the top of the piston body is isolated from the external space, and the gas inside begins to be compressed and gradually rises. Driven by the high-pressure gas at the bottom, the piston body continues to move upward. Until the bottom of the piston body passes the fourth vent, the cavity at the bottom of the piston body connects to the external space through the fourth vent. The air pressure drops rapidly, and the piston body continues to move upward under inertia, further compressing the gas in the top cavity. This causes the air pressure in the top cavity to quickly exceed that in the bottom cavity. Under the action of the high-pressure gas, the air pressure in the top cavity rapidly increases, causing the piston body to stop moving upward. Under the action of gravity and the air pressure in the top cavity, it moves rapidly downward, striking the chisel rod located at the second end of the main body. The pneumatic chisel rod drive device provided in this application has a simple structure, consisting of simple mechanical structures with high reliability. Furthermore, during its downward movement, both the piston body's own gravity and the high-pressure gas provide a greater force to strike the chisel rod, significantly enhancing its efficiency. Additionally, the chisel rod drive device provided in this application does not require a cylinder to drive the piston body at the chisel rod head, nor does it require a complex air hammer, greatly improving its stability.
[0008] Preferably, a gas distribution ring is sleeved on the first end of the main body, and a preset first gap is provided between the inner wall of the gas distribution ring and the outer wall of the first end of the main body; the third vent hole and the second vent hole are respectively located on opposite sides of the first end of the main body.
[0009] Preferably, a groove is provided at the first end of the main body, and the air distribution ring is disposed on the groove.
[0010] Preferably, the length of the cavity within the main body from the first end to the second end is... L The distance between the fourth vent and the bottom wall of the cavity at the second end is... L 1. The length of the piston body is L 2. Satisfy , More preferably, , .
[0011] Preferably, the device also includes a handle, which is mounted on the housing of the device. The handle is provided with a third gas channel, one end of which is connected to a gas supply device, and the other end of which is connected to a second gas channel. A one-way valve is provided in the third gas channel.
[0012] Preferably, the third gas channel is disposed in one of the grips of the handle and communicates with the outer end face of the grip. The one-way valve includes a valve cover, which is sleeved on the grip. A fourth gas channel is disposed on the valve cover. One end of the fourth gas channel is connected to the third gas channel, and the other end of the fourth gas channel is provided with a connecting and fixing device for connecting to the gas supply pipe of the gas supply device. A first spring is disposed in the fourth gas channel of the valve cover. A valve disc is connected to the end of the first spring away from the valve cover, and a push rod is disposed to the end of the valve disc away from the first spring.
[0013] The handle is equipped with a push switch, which includes a rotating shaft, a push handle, and a push rod. The push rod is connected to the push handle at an angle, and a connecting part is formed at the connection. The rotating shaft is located at the connecting part, so that the push handle can rotate around the rotating shaft, and during the rotation, it drives the push rod to rotate around the rotating shaft. The push rod can abut against the push rod and push the push rod to move and compress the first spring.
[0014] This application embodiment also provides a pneumatic drill rod assembly, including the above-mentioned pneumatic drill rod drive device, and further including a drill rod tee connector, a feed pipe, a drill rod, and a drill bit;
[0015] The first connector of the drill rod tee is connected to the second end of the main body, the second connector is connected to the feed pipe, and the third connector is connected to the first end of the drill rod. The drill bit is fixedly installed on the second end of the drill rod. A hollow pipe is provided inside the drill rod, which passes through the first and second ends of the drill rod. The hollow pipe is connected to the feed channel of the feed pipe. The drill bit is provided with several spray holes, which connect the hollow pipe to the outside of the drill bit.
[0016] The pneumatic drill rod assembly provided in this application uses a driving device to insert the drill rod and a drill bit located at the second end of the drill rod into the plant roots below the soil layer. On one hand, high-pressure gas is instantly introduced into the hollow pipe, which loosens the soil layer. On the other hand, fertilizer can also be introduced through the hollow pipe for root fertilization of the plant, achieving a better fertilization effect. The starting drill rod assembly provided in this application embodiment has a simple structure, high reliability, and very high efficiency in inserting the drill rod into the soil layer.
[0017] Preferably, it further includes a hammer rod and a second spring; the second end of the main body is provided with a hammer rod mounting hole, the hammer rod mounting hole extends from the bottom wall of the cavity at the second end of the main body to the outside of the second end of the main body, the hammer rod is slidably disposed in the hammer rod mounting hole, and the first end of the hammer rod extends into the cavity, the second end of the hammer rod is fixedly connected to the second end of the second spring, and the first end of the second spring is fixedly connected to the second end of the main body; the first connector of the chisel tee is connected to the second end of the hammer rod. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the pneumatic drill rod assembly structure in an embodiment of this application;
[0020] Figure 2 This is a schematic diagram of the drive device for a pneumatic drill bit, showing the piston body located at the second end.
[0021] Figure 3 This is a schematic diagram of the drive device for a pneumatic drill bit, in which the piston body is located beyond the fourth vent.
[0022] Figure 4 A schematic diagram of the drive device for a pneumatic chisel, showing the piston rising to its highest point and then moving downwards;
[0023] Figure 5 The diagram shows the structure of the pneumatic drill rod assembly in the embodiment of the application, indicating the lengths of the piston body, cavity, and fourth vent.
[0024] In the diagram: 100, pneumatic drill rod assembly; 110, drive device; 111, handle; 1110, grip; 1111, third gas passage; 120, drill rod tee connector; 130, drill rod; 140, drill bit; 151, valve cover; 152, fourth gas passage; 153, first spring; 154, valve disc; 156, valve seat; 162, pressing handle; 170, main body; 171, first end; 172, second end; 173, gas distribution ring; 174, cavity; 175, first gas passage; 176, first vent; 177, second vent; 178, third vent; 179, fourth vent; 180, device housing; 181, second gas passage; 191, piston body; 192, hammer rod; 193, second spring; 280, feed pipe. Detailed Implementation
[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0026] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with "first," "symmetric," etc., may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features.
[0027] In this utility model, unless otherwise explicitly specified and limited, terms such as "installation," "connection," and "fixation" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, a direct connection, a welding connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the accompanying drawings and specific circumstances.
[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0029] like Figure 1 As shown, this application embodiment provides a pneumatic drill rod assembly 100, including a long, narrow drill rod 130. The length of the drill rod 130 can be selected according to the specific fertilization scenario or can be set to a general purpose. The drill rod 130 is divided into a first end and a second end. The second end of the drill rod 130 is used to insert into the soil layer, so a drill bit 140 is provided at the second end of the drill rod 130. The drill bit 140 is tapered, wider at the top and narrower at the bottom, to facilitate drilling. A hollow pipe is provided inside the drill rod 130, extending from the first end to the second end, that is, a through hollow pipe is provided from the top to the bottom of the drill rod 130. The drill bit 140 is provided with multiple nozzles, the number of which can be set as needed, and this application does not limit it. Each nozzle is connected to the hollow pipe located at the second end of the drill rod 130. The nozzle can be directly connected to the hollow pipe, or a cavity can be set inside the drill bit, with the hollow pipe connected to the cavity inside the drill bit, and the nozzle connected to the cavity inside the drill bit.
[0030] The second end of the drill rod 130 is connected to the third connector of the drill rod tee connector 120. The second connector of the drill rod 130 tee connector is connected to a feed pipe 280, the feed channel of which connects to the hollow pipe of the drill rod 130. The other end of the feed pipe 280 can be connected to an air cannon, an air storage tank, a nutrient solution tank, a fertilizer box, etc. The first connector of the drill rod tee connector 120 is connected to a pneumatic drill rod drive device 110. The pneumatic drill rod drive device is used to drive the drill rod to insert into the soil layer.
[0031] The pneumatic rod assembly provided in this application embodiment can perform in-soil fertilization of plant roots, which can be divided into three working processes:
[0032] 1. Deep insertion process, i.e., the process of inserting the drill rod into the soil layer. A pneumatic drill rod drive device automatically inserts the drill rod to a preset depth in the soil layer. In one embodiment, a scale can be set on the drill rod, so that the depth of insertion into the soil layer can be obtained from the scale.
[0033] 2. Deep Tillage Process. After the second end of the drill rod enters the soil layer at the preset depth, the feed pipe is connected to the air cannon. The high-pressure gas in the air cannon is released instantly and connected to the hollow pipe through the feed channel of the feed pipe, and then bursts into the soil layer through the nozzle set on the drill bit. This achieves the purpose of loosening the soil layer around the drill rod. In order to achieve better soil loosening effect, the pressure of the air cannon can be adjusted and controlled, so as to obtain better soil loosening effect according to the soil properties (such as soil hardness, soil composition, etc.).
[0034] 3. Deep application process. Control the feed pipe to connect to the fertilizer tank, control the fertilizer in the fertilizer tank to enter the feed pipe, control the feed pipe to connect to the air cannon, start the air cannon, and use the high-pressure gas released by the air cannon to spray the fertilizer into the soil to achieve efficient fertilization.
[0035] In this embodiment of the application, the driving device 110 of the pneumatic drill rod is as follows: Figures 2 to 4As shown, the device includes a handle 111, which comprises two symmetrically arranged grips 1110 for easy handling by workers to stabilize the pneumatic drill rod assembly 100 on the soil, thereby facilitating the insertion of the drill rod into the soil by the drive device 110. Alternatively, the pneumatic drill rod assembly 100 provided in this application can also be fixed by a robot. A third gas channel 1111 is provided in one of the grips, extending from the outer end face of the grip to the middle of the handle. A one-way valve is provided in the third gas channel. The one-way valve includes a valve cover 151 connected to the outer end face of the grip and extending into the third channel. A fourth gas channel 152 is provided in the valve cover 151, extending to one end of the handle 111 and connecting to the third gas channel 1111. The other end of the fourth gas channel 152 is connected to a connecting and fixing device for connection to an air supply pipe. The other end of the air supply pipe is connected to an air supply device, such as an air tank. A first spring 153 is fixedly connected to the fourth gas passage 152 at the connection between the valve cover 151 and the handle. A valve disc 154 is fixedly connected to the other end of the first spring 153. A push rod is fixedly connected to the other end face of the valve disc 154, that is, the other side of the end face connected to the first spring 153. The push rod extends through the third gas passage 1111 to the middle of the handle 111. A valve seat 156 is provided in the third gas passage 1111 in the direction from the first spring 153 to the handle 111, and the valve disc 154 can be matched with the valve seat 156. A through hole is opened in the middle of the valve seat 156 to allow gas to flow. The through hole in the middle of the valve seat 156 is smaller than the area of the valve disc 154. When the valve disc 154 abuts against the valve seat 156 under the action of the first spring 153, the gas passage can be closed and the gas supply can be cut off. When the push rod is pushed to compress the first spring 153, the gas passage can be opened to provide high-pressure gas to the drive device 110. A push switch is provided on the handle 111. The push switch includes a rotating shaft, a push handle 162, and a push rod. The push rod is connected to the push handle 162 at an angle, forming a connecting part at the connection. In the preferred embodiment provided in this application, this angle is an obtuse angle, between 120 and 150 degrees. The rotating shaft is located at the connecting part and is fixed to the handle 111 through the connecting part, so that the push handle 162 can rotate around the rotating shaft. During the rotation, it drives the push rod to rotate around the rotating shaft. The push rod can abut against the push rod and push the push rod to move and compress the first spring 153.
[0036] The drill bit drive device in this embodiment mainly consists of a main body 170, which includes a first end 171 and a second end 172. A gas distribution ring mounting position is provided at the first end 171 of the main body 170. This mounting position can be a groove at the first end or a mounting position between two protrusions; this embodiment uses a groove as an example. A gas distribution ring 173 is fitted onto the mounting position, and a preset first gap is provided between the inner wall of the gas distribution ring 173 and the groove wall. In a preferred embodiment, the first gap is 0.01-5.00 mm; in this embodiment, it is 0.55 mm. A device housing 180 is fitted over the first end 171 of the main body, forming a sealed space between the device housing 180 and the groove, allowing gas to pass through. The outer casing 180 is also fixedly connected to the middle of the handle 111. A second gas channel 181 is provided on the outer casing 180. One end of the second gas channel 181 is connected to the third gas channel 1111 on the handle, and the other end of the second gas channel 181 is connected to the sealed space in the groove.
[0037] The main body has an internal cavity 174 extending from a first end 171 to a second end 172, the cavity 174 being surrounded by a main body shell; a first gas channel 175 is provided along the main body shell from the first end 171 to the second end 172, and a first vent 176 is provided at the second end of the main body, the first vent 176 connecting the first gas channel 175 and the cavity 174; a second vent 177 is provided on the groove wall, the second vent 177 connecting the first gas channel 175 and the groove wall. The groove; a third vent 178 is also provided on the groove wall, the third vent 178 connects the cavity 174 and the groove, the third vent 178 and the second vent 177 are respectively located on opposite sides of the groove wall; a fourth vent 179 is also provided on the main body shell, the fourth vent 179 connects the cavity 174 and the external space of the main body; the fourth vent 179 is a preset distance from the bottom wall of the cavity at the second end; a piston body 191 with a shape and size matching the cavity is provided in the cavity.
[0038] like Figure 5 As shown, the length of the cavity 174 within the main body from the first end to the second end is... L The distance between the fourth vent and the bottom wall of the cavity at the second end is... L 1. The length of the piston body is L 2. Satisfy , In the preferred embodiment provided in this application, , .
[0039] The pneumatic drill rod assembly provided in this application embodiment allows the operator to determine the fertilization location by holding the handle and pressing the push handle. The push handle rotates the push rod, which in turn pushes the push rod to compress the first spring, thereby opening the one-way valve. This allows high-pressure gas to enter the sealed space at the groove along the fourth, third, and second gas pipes. One path of the high-pressure gas connects to the first gas channel through the second vent hole and then to the cavity at the bottom of the piston body. The other path enters the cavity at the top of the piston body through the third vent hole. Since the cavity at the top of the piston body is connected to the external space through the fourth vent hole, the high-pressure gas entering through the third vent hole quickly exits through the fourth vent hole. No significant high pressure is formed in the cavity at the top of the piston body, while the cavity at the bottom of the piston body is a closed space, and its pressure increases rapidly as high-pressure gas enters. The increased gas pressure causes the valve ring to move towards the second vent, making it easier for high-pressure gas to enter, while the third vent is blocked by the valve ring, making it difficult for high-pressure gas to enter. On the other hand, it also rapidly pushes the piston upwards. Once the top of the piston passes the fourth vent, the cavity at the top of the piston is isolated from the external space, and the gas inside begins to be compressed and gradually rises. Driven by the high-pressure gas at the bottom, the piston continues to move upwards. Until the bottom of the piston body passes the fourth vent, the cavity at the bottom of the piston body connects to the external space through the fourth vent. The air pressure drops rapidly, and the piston body continues to move upward under inertia, further compressing the gas in the top cavity. This causes the air pressure in the top cavity to rapidly exceed that in the bottom cavity, causing the valve ring to move from the second vent towards the third vent. This closes the second vent and connects the third vent to the top cavity of the piston body. Under the pressure of the high-pressure gas, the air pressure in the top cavity rapidly increases, causing the piston body to stop moving upward. Under the combined action of gravity and the air pressure in the top cavity, it moves rapidly downward, striking the chisel located at the second end of the main body and inserting it into the soil. Subsequent deep loosening and deep application processes can then be implemented. The pneumatic chisel drive device provided in this application has a simple structure, consisting of simple mechanical components, and is highly reliable. Furthermore, during its downward movement, both the piston body's own gravity and the high-pressure gas provide a greater force to strike the chisel, significantly enhancing its efficiency. Meanwhile, the drill bit drive device provided in this application does not require a cylinder to drive the piston body at the drill bit head, nor does it require a complex air hammer for control, which greatly improves its stability.
[0040] In a preferred embodiment of the pneumatic drill rod assembly provided in this application, a hammer rod 192 and a second spring 193 are further included. A hammer rod mounting hole is provided at the second end of the main body, extending from the bottom wall of the cavity at the second end of the main body. The hammer rod 192 is slidably disposed within the hammer rod mounting hole, with its first end extending into the cavity. The second end of the hammer rod is fixedly connected to the second end of the second spring, and the first end of the second spring is fixedly connected to the second end of the main body. The first connector of the drill rod tee is connected to the second end of the hammer rod. Through further improvements, this embodiment provides an intermediate transmission structure composed of a hammer rod and a second spring between the drill rod and the drive device. On the one hand, during the upward movement of the piston body, the hammer rod, under the action of gravity and the second spring, can move along the hammer rod mounting hole and extend into the cavity. On the other hand, during the downward impact of the piston body, the hammer rod can begin to strike inside the cavity and continue until the top of the hammer rod enters the hammer rod mounting hole. This increases the impact time, thereby reducing vibration during operation and improving the stability of the deep-penetration process.
[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A drive device for pneumatic drill rods, characterized in that: The device includes a main body, comprising a first end and a second end. An internal cavity extending from the first end to the second end is formed within the main body, and the cavity is surrounded by a main body shell. A first gas channel is formed along the main body shell from the first end to the second end. A first vent is formed at the second end of the main body, connecting the first gas channel and the cavity. A second vent is formed at the first end, connecting the first gas channel and the external space of the main body. A third vent is formed at the first end, connecting the cavity to the external space of the main body. A fourth vent is formed on the main body shell, connecting the cavity to the external space of the main body. The fourth vent is located at a predetermined distance from the bottom wall of the cavity at the second end. A piston body, matching the shape and size of the cavity, is formed within the cavity. It also includes a device housing, which is fitted onto the main body housing. The device housing has a second gas channel connected to the sealed space formed around the groove and connected to the gas supply port.
2. The driving device for the pneumatic drill rod as described in claim 1, characterized in that, An air distribution ring is fitted at the first end of the main body, and a preset first gap is provided between the inner wall of the air distribution ring and the outer wall of the first end of the main body; the third vent hole and the second vent hole are respectively located on opposite sides of the first end of the main body.
3. The driving device for the pneumatic drill rod as described in claim 2, characterized in that, The first end of the main body is provided with a groove, and the air distribution ring is disposed on the groove.
4. The driving device for the pneumatic drill rod as described in any one of claims 1 to 3, characterized in that, it is provided with The length of the cavity within the main body from the first end to the second end is: L The distance between the fourth vent and the bottom wall of the cavity at the second end is... L 1. The length of the piston body is L 2. Satisfy , .
5. The driving device for the pneumatic drill rod as described in claim 4, characterized in that, ， 。 6. The driving device for the pneumatic drill rod as described in claim 4, characterized in that, It also includes a handle, which is mounted on the housing of the device. The handle is provided with a third gas channel, one end of which is connected to a gas supply device and the other end of which is connected to a second gas channel. A one-way valve is provided in the third gas channel.
7. The driving device for the pneumatic drill rod as described in claim 6, characterized in that, The third gas channel is disposed in one of the grips of the handle and communicates with the outer end face of the grip. The one-way valve includes a valve cover, which is sleeved on the grip. A fourth gas channel is disposed on the valve cover. One end of the fourth gas channel is connected to the third gas channel, and the other end of the fourth gas channel is provided with a connecting and fixing device for connecting to the gas supply pipe of the gas supply equipment. A first spring is disposed in the fourth gas channel of the valve cover. A valve disc is connected to the end of the first spring away from the valve cover, and a push rod is disposed to the end of the valve disc away from the first spring. The handle is equipped with a push switch, which includes a rotating shaft, a push handle, and a push rod. The push rod is connected to the push handle at an angle, forming a connecting part at the connection. The rotating shaft is located at the connecting part, allowing the push handle to rotate around the rotating shaft. During rotation, the push rod rotates around the rotating shaft. The push rod can abut against the push rod, pushing the push rod to move and compress the first spring. A valve seat matching the valve disc is provided in the third gas channel.
8. A pneumatic drill rod assembly, characterized in that, The device includes a drive unit for a pneumatic drill rod as described in any one of claims 1 to 7, and further includes a drill rod tee connector, a feed pipe, a drill rod, and a drill bit; The first connector of the drill rod tee is connected to the second end of the main body, the second connector is connected to the feed pipe, and the third connector is connected to the first end of the drill rod. The drill bit is fixedly installed on the second end of the drill rod. A hollow pipe is provided inside the drill rod, which passes through the first and second ends of the drill rod. The hollow pipe is connected to the feed channel of the feed pipe. The drill bit is provided with several spray holes, which connect the hollow pipe to the outside of the drill bit.
9. The pneumatic drill rod assembly as described in claim 8, characterized in that, It also includes a hammer rod and a second spring; the second end of the main body is provided with a hammer rod mounting hole, which extends from the bottom wall of the cavity at the second end of the main body to the outside of the second end of the main body, the hammer rod is slidably disposed in the hammer rod mounting hole, and the first end of the hammer rod extends into the cavity, the second end of the hammer rod is fixedly connected to the second end of the second spring, and the first end of the second spring is fixedly connected to the second end of the main body; the first connector of the chisel tee is connected to the second end of the hammer rod.