Internal combustion rock drill and air supply system thereof

Abstract

The present application discloses an internal combustion rock drill and its air supply system, wherein the air supply system comprises: a fuel tank and an engine, wherein the fuel tank and the engine are connected via a carburetor, and the gasoline in the fuel tank is atomized and mixed with air in a certain proportion via the carburetor to form a combustible mixed gas which is introduced into the engine to meet the combustion requirements of the engine under different working conditions; an air supply device, wherein the air supply device comprises an air inlet end and an air outlet end, and the air outlet end is connected to the fuel tank via a rubber hose, and air is discharged through the air outlet end of the air supply device to replenish air in the fuel tank; wherein, when a unit amount of gas is discharged from the air outlet end, a unit amount of gas is simultaneously unidirectionally circulated through the air inlet end to replenish the air supply device.

Description

Technical Field

[0001] The present application relates to the field of mechanical engineering technology, and in particular to an internal combustion rock drill and an air supply system thereof. Background Art

[0002] As the oil circuit system for the machine's oil supply, a small hole is left on the fuel tank cap to let in air. When the fuel consumption level drops during operation, the fuel tank must be filled with air through this small hole to maintain the pressure in the tank and make the oil absorption smooth. This small hole should be unobstructed, so the usual practice is to blow air into the tank through the small hole before starting to make the oil circuit more unobstructed. However, this practice is inconvenient for operators on the one hand, and unsanitary and affects health on the other. In this context, the research and development of the air supply system for carburetor rock drills is particularly necessary, which makes the machine start more convenient and sanitary, and can improve fuel combustion efficiency. Summary of the invention

[0003] The purpose of the present application is to provide an internal combustion rock drill and an air supply system thereof, so as to conveniently and efficiently replenish gas to the oil tank to maintain the pressure in the oil tank.

[0004] In order to achieve the above purpose, the technical solution adopted in the present application is: to provide an internal combustion rock drill air supply system, including: a fuel tank and an engine, the fuel tank and the engine are connected through a carburetor, the gasoline in the fuel tank is atomized and mixed with air in a certain proportion through the carburetor to form a combustible mixture that is introduced into the engine to meet the combustion requirements of the engine under different working conditions; an air supply device, the air supply device includes an air inlet end and an air outlet end, the air outlet end is connected to the fuel tank, and air is discharged through the air outlet end of the air supply device to supply air to the fuel tank; wherein, when a unit amount of gas is discharged from the air outlet end, a unit amount of gas is simultaneously unidirectionally circulated through the air inlet end to be supplemented into the air supply device.

[0005] As a preference, the air replenishing device also includes: an air replenishing component body and an airbag, the airbag is connected to the air replenishing component body, the air inlet end and the air outlet end are both arranged on the air replenishing component body, and the air inlet end is connected to the airbag, and the air outlet end is connected to the airbag; wherein, by pressing the airbag, the gas in the airbag is introduced into the fuel tank through the air outlet end, and by releasing the airbag, the airbag rebounds to replenish the external gas into the airbag through the air inlet end.

[0006] As another preferred embodiment, the air replenishing component body includes: a top panel, a middle panel and a bottom panel, which are stacked in sequence, the airbag is connected to the top panel, the air outlet is connected to the side of the top panel, and the air inlet is connected to the bottom panel.

[0007] Further preferably, a first gasket is sandwiched between the top panel and the middle panel, and a second gasket is sandwiched between the middle panel and the bottom panel.

[0008] Preferably, a one-way valve sheet is sandwiched between the top panel and the first gasket; wherein, when the air inlet end inhales gas, the gas pushes open the one-way valve sheet to allow the gas to flow into the airbag in one direction.

[0009] Further preferably, the air replenishment device includes a first air duct and a second air duct, the first air duct is an air inlet channel, and the second air duct is an air replenishment channel, the first air duct is composed of the air inlet end provided on the bottom panel, the middle panel, the one-way valve sheet, the top panel and the airbag, and the second air duct is composed of the air outlet end provided on the top panel directly connected to the airbag.

[0010] Further preferably, the middle panel is provided with a first through hole, a first cavity and a second cavity, the top panel is provided with a second through hole, a third through hole, a fourth through hole, a fifth through hole, a sixth through hole, a third cavity and a fourth cavity, and the one-way valve sheet includes a first one-way valve sheet and a second one-way valve sheet; wherein the gas flow direction in the first air duct includes: the gas enters from the air inlet end, passes through the bottom panel to reach the middle panel, enters the second through hole through the first through hole, and then enters the third cavity through the transverse channel provided in the second through hole, the gas enters the third through the third cavity, the surface of the third through hole is covered with the first one-way valve sheet, the gas pushes open the first one-way valve sheet to enter the first cavity, passes through the first cavity and then passes through the fourth through hole to enter the fourth cavity, the gas enters the fifth through the fourth cavity, the fifth through hole is covered with the second one-way valve sheet, the gas pushes open the second one-way valve sheet to enter the second cavity, the second cavity is connected with the sixth through hole, and then the gas enters the airbag through the sixth through hole.

[0011] Preferably, a first filter is provided in the air inlet end, and a second filter is provided in the sixth through hole.

[0012] Preferably, the bottom panel is provided with an assembly end, and is connected to the engine casing via the assembly end, so that the air supply device can be fixedly assembled on the engine casing.

[0013] Preferably, the present application document also provides an internal combustion rock drill, comprising: a power mechanism; a rock drilling device, wherein the power mechanism is transmission-connected to the rock drilling device, the power mechanism drives the rock drilling device to operate, and the power mechanism is suitable for an internal combustion rock drill air supply system as described in any one of the above items.

[0014] Compared with the prior art, the beneficial effects of this application are:

[0015] This application uses a specially designed air-supplementing device to eliminate the need for such cumbersome operations, making machine startup more convenient, saving operating time and energy, and improving work efficiency. At the same time, workers do not need to master the skills and strength of blowing through the small holes, reducing problems that may be caused by improper operation, such as insufficient or excessive blowing, reducing the skill requirements for operators, reducing the difficulty of operation, and making the operation simpler and easier. At the same time, in the past, operators needed to blow air into the small holes on the fuel tank cover, which might expose them to pollutants such as oil and dust around the fuel tank, and might even inhale some harmful gases. Now, the use of air-supplementing equipment avoids direct contact between workers and the small holes in the fuel tank, reduces the impact of pollutants and harmful gases on workers' health, and is more hygienic.

[0016] This application document, by setting up air supply equipment, eliminates the need for operators to perform air blowing operations before starting the equipment, thereby reducing odor and dust flying that may be generated by air blowing, helps improve the environmental quality of the workplace, and creates a healthier working space for operators.

[0017] At the same time, when the air supply equipment is replenishing gas into the oil tank, the gas discharged from the outlet may reduce the internal pressure of the air supply equipment. The simultaneous replenishment of the same amount of gas at the inlet can maintain the internal pressure balance of the air supply equipment, ensure the stability of the air supply process, avoid uneven or interrupted air supply due to pressure fluctuations, and ensure that the internal combustion rock drill can stably obtain the required air supply under various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of each component in the air supply system.

[0019] Figure 2 This is a schematic diagram of the structure of the gas supply equipment.

[0020] Figure 3 This is a structural schematic diagram of the gas replenishment equipment from another perspective.

[0021] Figure 4 It is a structural diagram of the fuel tank and the engine.

[0022] Figure 5 This is a structural explosion diagram of the bottom panel and middle panel positions in the air supply equipment.

[0023] Figure 6 This is a structural explosion diagram of the top panel and middle panel positions in the air supply equipment.

[0024] Figure 7 It is a schematic diagram of the assembly structure of the air supply equipment.

[0025] Figure 8It is a schematic diagram of the structure in which the top panel is connected to a one-way valve sheet.

[0026] In the figure: 10, fuel tank; 20, engine; 21, mounting seat; 30, air supply equipment; 31, air inlet end; 32, air outlet end; 33, hose; 40, air supply component body; 41, top panel; 411, second through hole; 412, third through hole; 413, fourth through hole; 414, fifth through hole; 415, sixth through hole; 417, third cavity; 418, fourth cavity; 42, middle panel; 421, first through hole; 422, first cavity; 423, second cavity; 43, bottom panel; 431, assembly end; 44, first gasket; 45, second gasket; 46, one-way valve plate; 47, first one-way valve plate; 48, second one-way valve plate; 50, airbag; 51, limiting boss; 60, first filter screen; 70, second filter screen. DETAILED DESCRIPTION

[0027] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present application.

[0029] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0030] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0031] In a preferred embodiment, see Figures 1 to 8The present application document provides an air supply system for an internal combustion rock drill, including: a fuel tank 10 and an engine 20, wherein the fuel tank 10 and the engine 20 are connected via a carburetor, wherein the carburetor is a conventional accessory and is not shown in the attached drawings. The gasoline in the fuel tank 10 is atomized by the carburetor and mixed with air in a certain proportion to form a combustible mixed gas which is introduced into the engine 20 to meet the combustion requirements of the engine 20 under different working conditions; an air supply device 30, wherein the air supply device 30 includes an air inlet end 31 and an air outlet end 32, wherein the air outlet end 32 is connected to the fuel tank 10 via a rubber hose 33, and air is discharged through the air outlet end 32 of the air supply device 30 to supply air to the fuel tank 10; wherein, when a unit amount of gas is discharged from the air outlet end 32, a unit amount of gas is simultaneously unidirectionally circulated through the air inlet end 31 to supplement the air supply device 30.

[0032] In the past, it was necessary to blow air into the oil tank 10 through the small hole on the cover of the oil tank 10 to ensure that the oil path was unobstructed. The present application uses a specially set air replenishing device 30, which eliminates the need for such cumbersome operations, making the machine start more convenient, saving operation time and energy, and improving work efficiency. At the same time, workers do not need to master the skills and strength of blowing through the small hole, which reduces the problems that may be caused by improper operation, such as insufficient or excessive blowing, reduces the skill requirements for the operator, reduces the difficulty of operation, and makes the operation simpler and easier.

[0033] In the past, operators had to blow air into the small hole on the cover of the fuel tank 10, which may expose them to pollutants such as oil and dust around the fuel tank 10, and may even inhale some harmful gases. Now, the air supply device 30 is used to avoid direct contact between the workers and the small hole of the fuel tank 10, reduce the impact of pollutants and harmful gases on the health of workers, and be more hygienic.

[0034] The present application document provides an air supply device 30, thereby eliminating the need for operators to perform air blowing operations before starting the equipment, thereby reducing odor and dust flying that may be generated by air blowing, helping to improve the environmental quality of the workplace and creating a healthier working space for operators.

[0035] As for the fuel combustion efficiency, the air replenishing device 30 is set to replenish air to the fuel tank 10 more stably and accurately, keep the pressure in the fuel tank 10 stable, and allow the fuel to enter the engine 20 more smoothly through the carburetor, thereby ensuring the stability and continuity of the fuel supply, which is beneficial for the engine 20 to obtain the appropriate amount of fuel under different working conditions, thereby improving the fuel combustion efficiency.

[0036] The synchronous and equal gas flow of the air inlet 31 and the air outlet 32 ​​enables the air replenishment device 30 to quickly complete one air replenishment and immediately prepare for the next air replenishment, without the need for additional time to replenish the gas, thereby greatly improving the air replenishment efficiency. When the internal combustion rock drill is working, the required gas can be replenished to the fuel tank 10 more timely to meet the fuel supply requirements of the engine 20 under different working conditions, ensuring the continuous and stable operation of the equipment.

[0037] The gas is extracted and supplemented in unit quantities, which facilitates the precise control of the gas replenishment amount. According to the specific working requirements of the internal combustion rock drill and the actual needs of the fuel tank 10, the unit quantities can be reasonably designed to achieve precise adjustment of the gas replenishment amount, so that the mixing ratio of fuel and air is more in line with the combustion requirements of the engine 20, thereby improving fuel utilization and reducing energy waste.

[0038] The gas replenishment device 30 can stably replenish gas in the fuel tank 10, thereby helping to maintain the carburetor to atomize gasoline and mix it with air in a more appropriate ratio to form a more ideal combustible mixture. The appropriate mixture ratio can make the fuel burn more fully in the engine 20, reduce fuel waste, improve fuel utilization, and thus improve the performance and power output of the engine 20. Therefore, the gas replenishment system in this application document helps to improve the level of domestic internal combustion rock drills in gas replenishment technology, promote the development and progress of related technologies, and improve the competitiveness of domestic internal combustion rock drill products.

[0039] As a preferred embodiment, the air replenishing device 30 also includes: an air replenishing component body 40 and an airbag 50, the airbag 50 is connected to the air replenishing component body 40, the air inlet end 31 and the air outlet end 32 are both arranged on the air replenishing component body 40, and the air inlet end 31 is connected to the airbag 50, and the air outlet end 32 is connected to the airbag 50; wherein, by pressing the airbag 50, the gas in the airbag 50 is introduced into the fuel tank 10 through the air outlet end 32, and when the airbag 50 is released, the airbag 50 rebounds to replenish the external gas into the airbag 50 through the air inlet end 31.

[0040] Among them, through the setting of the airbag 50, the operator can flexibly control the pressure and frequency according to the actual situation, so as to accurately control the amount of air added to the fuel tank 10. For example, under different working environments and working conditions, the amount of air required in the fuel tank 10 may be different. In this way, it can be easily adjusted as needed to ensure that the pressure in the fuel tank 10 is always maintained in a suitable state, so that the fuel supply of the internal combustion rock drill is stable and the normal operation of the machine is guaranteed. There is no need to rely on complex external equipment or systems to perform air replenishment operations. The operator can independently complete the air replenishment process by pressing the airbag 50 to achieve autonomous control of air replenishment. The operation is simple and direct. In some emergency situations or special working scenarios, it can respond quickly and perform air replenishment operations, thereby improving the autonomy of equipment use and emergency handling capabilities.

[0041] Furthermore, the structure of the connection between the airbag 50 and the air-inflation device body 40 is relatively simple, without complex mechanical transmission or electronic control components, thus reducing the possible failure points due to too many components and improving the reliability and stability of the air-inflation device 30. At the same time, this simple structure is also easy to install, maintain and repair, reducing the maintenance cost and difficulty of the equipment.

[0042] At the same time, the airbag 50 has a certain elasticity and buffering effect, and can play a certain buffering and regulating role on the gas pressure and flow during the air replenishment process. The air intake is relatively stable, avoiding impact and damage to the fuel tank 10 and related components due to sudden changes in gas pressure or excessive flow, and playing a certain protective role on the fuel system of the internal combustion rock drill.

[0043] Preferably, when the airbag 50 is engaged with the top panel 41, the limiting boss 51 covers the engaging area to prevent the airbag 50 from being disengaged from the top panel 41. Specifically, since the limiting boss 51 covers the engaging area between the airbag 50 and the top panel 41, the position of the airbag 50 can be effectively limited to prevent the airbag 50 from being disengaged from the engaging part of the top panel 41 due to pressure, vibration and other factors when the operator presses the airbag 50 or the equipment is in operation, thereby ensuring the structural integrity and stability of the gas replenishment device 30. At the same time, the limiting boss 51 is fixedly connected to the top panel 41 by bolts to prevent gas leakage when the operator presses the airbag 50 and ensure the stability of the fixing of the limiting boss 51.

[0044] Preferably, the limiting boss 51 is a rhombus-like structure. Compared with common square, circular and other structures, the rhombus-like structure has better spatial adaptability while providing the same support and limiting function. The side of the rhombus-shaped structure is protruding, so it is easy to assemble and disassemble the limiting boss 51, making the limiting boss 51 convenient in the manufacturing and installation process. At the same time, its shape can be more easily matched with the shape of the top panel 41 and the airbag 50, and the design can be more flexibly optimized according to the overall layout of the air replenishment device 30, reducing the design and manufacturing difficulty caused by structural mismatch, reducing production costs, and improving production efficiency.

[0045] As another preferred embodiment, the air replenishing component body 40 includes: a top panel 41, a middle panel 42 and a bottom panel 43, which are stacked in sequence, the airbag 50 is connected to the top panel 41, the air outlet end 32 is connected to the side of the top panel 41, and the air inlet end 31 is connected to the bottom panel 43.

[0046] Further preferably, a first gasket 44 is sandwiched between the top panel 41 and the middle panel 42, and a second gasket 45 is sandwiched between the middle panel 42 and the bottom panel 43. The gasket can effectively fill the gap between the panels and improve the overall sealing of the air replenishment device 30. Prevent gas leakage inside the device, ensure that the gas flows according to the predetermined air duct, ensure the efficiency and stability of the air replenishment system, and make the air replenishment process more reliable. At the same time, the gasket can play a role in buffering and shock absorption. During the operation of the air replenishment device 30, it may be affected by factors such as vibration and pressure changes. The gasket can absorb these external forces, reduce friction and collision between panels, reduce the risk of component damage, and extend the service life of the air replenishment device 30.

[0047] Furthermore, the presence of gaskets can adjust the spacing and fitting accuracy between panels to a certain extent. Gaskets of different thicknesses can be selected according to actual needs to adapt to the subtle differences in the internal structure of the air supply device 30, ensuring that the connections between the various components are tight and well-fitted, which is conducive to improving the overall performance of the air supply device 30.

[0048] Preferably, a one-way valve sheet 46 is sandwiched between the top panel 41 and the first gasket 44; wherein, when the air inlet end 31 inhales gas, the gas pushes open the one-way valve sheet 46 to allow the gas to flow into the airbag 50 in one direction. Specifically, when the air inlet end 31 inhales gas, the gas can push open the one-way valve sheet 46 to allow the gas to flow into the airbag 50 in one direction. This arrangement ensures that the gas can only flow in a predetermined direction, prevents gas backflow, ensures the normal working order of the gas replenishment system, and avoids insufficient gas replenishment or system failure caused by gas backflow.

[0049] At the same time, the setting of the one-way valve plate 46 can protect the air supply equipment 30 and other related components to a certain extent. For example, when the working state of the internal combustion rock drill changes, such as pressure fluctuations, the one-way valve plate 46 can prevent the gas from flowing in the opposite direction, avoid causing pressure shock to the components of the air inlet end 31, maintain the stability of the internal pressure of the air supply equipment 30, and improve the reliability and safety of the air supply system.

[0050] Further preferably, the air replenishing device 30 includes a first air duct and a second air duct. The first air duct is composed of an air inlet end 31 provided on the bottom panel 43, a middle panel 42, a one-way valve sheet 46, a top panel 41 and an air bag 50. The second air duct is composed of an air outlet end 32 provided on the top panel 41 directly connected to the air bag 50. This dual air duct design clarifies the flow path of the gas in the air replenishing device 30, so that the air intake and air outlet processes are independent and orderly, which is beneficial to improving the efficiency and stability of gas circulation, and ensuring that the air replenishing system can quickly and accurately replenish the required gas for the fuel tank 10.

[0051] For further optimization, see Figure 5 and Figure 6 , on the same panel layer, the through holes or the through holes and the cavity are connected through a horizontal pipeline channel, and the through holes and the cavity in the vertical direction are connected through the panel overlap, wherein the middle panel 42 is provided with a first through hole 421, a first cavity 422 and a second cavity 423, the top panel 41 is provided with a second through hole 411, a third through hole 412, a fourth through hole 413, a fifth through hole 414, a sixth through hole 415, a third cavity 417 and a fourth cavity 418, and the one-way valve plate 46 includes a first one-way valve plate 47 and a second one-way valve plate 48; wherein the gas flow direction in the first air duct includes: the gas enters from the air inlet end 31, passes through the bottom panel 43 to reach the middle panel 42, enters the second through hole 411 through the first through hole 421, and then passes through the second through hole The transverse channel 411 is provided to enter the third cavity 417, and the gas enters the third through hole 412 through the third cavity 417. The surface of the third through hole 412 is covered with a first one-way valve sheet 47. The gas pushes the first one-way valve sheet 47 open to enter the first cavity 422, passes through the first cavity 422 and then enters the fourth cavity 418 through the fourth through hole 413. The gas enters the fifth through hole 414 through the fourth cavity 418. The fifth through hole 414 is covered with a second one-way valve sheet 48. The gas pushes the second one-way valve sheet 48 open to enter the second cavity 423, wherein the second cavity 423 is composed of two chambers connected in an arc shape, and the chamber near the sixth through hole 415 in the second cavity 423 is connected with the sixth through hole 415, and then the gas moves in the chamber and enters the airbag 50 through the sixth through hole 415. The chamber near the position of the fifth through hole 414 is connected with the fifth through hole 414 through the second one-way valve sheet 48.

[0052] Specifically, the stability of the gas replenishment system is improved through the precise flow of gas. The gas flow path in the present application document allows the gas to pass through various through holes and cavities in sequence from the air inlet end 31 to the airbag 50. Each link has a clear flow direction guide, that is, a dedicated passage for gas intake is provided to ensure that the gas can flow along a predetermined route, avoiding disordered flow and chaos of the gas inside the device, thereby improving the accuracy and reliability of the gas replenishment system.

[0053] At the same time, the setting of the one-way valve plate 46 is the key to controlling the flow direction of gas. The first one-way valve plate 47 and the second one-way valve plate 48 cover the third through hole 412 and the fifth through hole 414 respectively. Only when the gas flows in the correct direction can the valve plate be pushed open to pass through, effectively preventing the gas from flowing back, ensuring the unidirectionality and stability of the entire gas replenishment process, and maintaining the normal working order of the gas replenishment system.

[0054] At the same time, the air duct structure in the present application document increases the buffering of the gas flow during the air intake process and provides a certain adjustment space. When pressure fluctuations or other unstable factors occur during the operation of the internal combustion rock drill, these through holes, cavities and transverse pipeline channels can play a certain buffering role to ensure the stability of the air intake in the air supply equipment 30, reduce the impact of the internal combustion rock drill on the air intake process of the air supply equipment 30, and enable the air supply system to maintain a relatively stable working state.

[0055] The clear duct structure and gas flow direction make it easier for maintenance personnel to understand the working principle of the system and the gas flow path when maintaining and inspecting the air supply system.

[0056] Furthermore, the setting of multiple through holes and cavities provides support for monitoring the operation of the internal combustion rock drill. By observing the speed and amount of air intake through the air intake end 31 of the air supply device 30, the specific working conditions such as the working stability of the internal combustion rock drill can be monitored and adjusted.

[0057] The setting of the one-way valve plate 46 is the key to controlling the flow direction of gas. The first one-way valve plate 47 and the second one-way valve plate 48 cover the third through hole 412 and the fifth through hole 414 respectively. Only when the gas flows in the correct direction can the valve plate be pushed open to pass through, effectively preventing the gas from flowing back, ensuring the unidirectionality and stability of the entire gas replenishment process, and maintaining the normal working order of the gas replenishment system.

[0058] Furthermore, the first one-way valve plate 47 and the second one-way valve plate 48 are located at different positions in the gas path, and together provide precise guidance for the gas flow direction. After the gas enters from the air inlet end 31, the first one-way valve plate 47 and the second one-way valve plate 48 cooperate to effectively avoid the disorderly flow of gas in the system, further ensuring that the gas will not flow back.

[0059] The reasonable coordination of the first one-way valve plate 47 and the second one-way valve plate 48 optimizes the flow path of the gas in the system, reduces the resistance and energy loss during the gas flow process, and allows the gas to flow more smoothly from the air inlet end 31 to the air bag 50, thereby improving the overall air replenishment efficiency of the air replenishment system, ensuring that the air bag 50 can be replenished with air in a timely and effective manner, thereby meeting the requirements of the internal combustion rock drill for air replenishment volume and air replenishment speed under different working conditions.

[0060] During the operation of the engine 20, the operating conditions may change continuously, and the pressure in the system will also fluctuate accordingly. This process will affect the carburetor and then affect the air replenishment process in the fuel tank 10. After the air replenishment device 30 completes one air replenishment through the air outlet end 32, the air intake process through the air intake end 31 will cause the air intake volume of the conventional air intake to be unstable. In the present application document, a first one-way valve plate 47 and a second one-way valve plate 48 are provided to correspond to the first cavity 422 and the second cavity 423, and the first cavity 422 and the second cavity 423 are located at the middle panel 42, so that the two cavities are aligned. A certain amount of gas is stored, so even if pressure fluctuations occur, since there is gas stored in the first cavity 422, the gas entering the first cavity 422 is mixed in the cavity, and then passes through the through hole to reach the second cavity 423. A pressure stabilization operation has been performed in the first cavity 422. Similarly, after the gas reaches the second cavity 423, the pressure is further stabilized after being mixed through the gas in the second cavity 423 to be introduced into the airbag 50, so as to ensure the stability of the air intake volume under pressure fluctuations, thereby ensuring the stability of the air replenishment pressure of the fuel tank 10 when the operator presses the airbag 50 to replenish air.

[0061] Preferably, a first filter screen 60 is provided in the air inlet end 31, and a second filter screen 70 is provided in the sixth through hole 415. The first filter screen 60 of the air inlet end 31 can preliminarily filter the external air when the gas enters the air replenishing device 30. It can effectively intercept impurities such as dust and sand in the air, prevent these impurities from entering the air replenishing device 30, and thus prevent the impurities from causing wear, blockage or damage to the internal parts of the device, such as the one-way valve plate 46 and the air bag 50, thereby extending the service life of the air replenishing device 30 and ensuring the normal operation of the air replenishing system.

[0062] The second filter 70 in the sixth through hole 415 is used to filter the gas that is about to enter the airbag 50 again. After passing through the previous series of channels, there may still be some tiny impurities in the gas. The second filter 70 can further ensure the purity of the gas entering the airbag 50, prevent the impurities from damaging the airbag 50, and affect the elasticity and sealing of the airbag 50, ensure that the airbag 50 can store and release gas normally, maintain the stability and reliability of the air replenishment system, and thus provide purer air to the mailbox through the air replenishment device 30.

[0063] Preferably, the bottom panel 43 is provided with an assembly end 431, and a mounting seat 21 is provided at the outer shell of the engine 20, and the assembly end 431 is connected to the mounting seat 21 of the outer shell of the engine 20, so that the air supply device 30 can be fixedly assembled on the outer shell of the engine 20. By connecting the assembly end 431 of the bottom panel 43 with the mounting seat 21 of the outer shell of the engine 20, the air supply device 30 can be firmly fixed on the outer shell of the engine 20. This connection method can ensure that during the operation of the engine 20, the air supply device 30 will not be displaced or fall off due to vibration, shaking, etc., and ensure that the relative position between the air supply device 30 and the engine 20 remains stable, so that the air supply system can continuously and stably provide the air supply function for the engine 20.

[0064] Preferably, the present application document also provides an internal combustion rock drill, comprising: a power mechanism; a rock drilling device, the power mechanism being transmission-connected to the rock drilling device, the power mechanism driving the rock drilling device to operate, and the power mechanism being suitable for an internal combustion rock drill air supply system such as any one of the above.

[0065] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. An internal combustion rock drill air supply system, characterized in that: include: A fuel tank and an engine, wherein the fuel tank and the engine are connected via a carburetor, and the gasoline in the fuel tank is atomized and mixed with air in a certain proportion by the carburetor to form a combustible mixed gas which is introduced into the engine to meet the combustion requirements of the engine under different working conditions; An air supply device, the air supply device comprising an air inlet end and an air outlet end, the air outlet end being connected to the oil tank, and air is discharged through the air outlet end of the air supply device to supply air to the oil tank; When a unit amount of gas is led out from the gas outlet, a unit amount of gas is simultaneously unidirectionally circulated through the gas inlet to be replenished into the gas replenishing device; The gas replenishing device also includes: An air-supplementing component body and an airbag, wherein the airbag is connected to the air-supplementing component body, the air inlet end and the air outlet end are both arranged on the air-supplementing component body, and the air inlet end is communicated with the airbag, and the air outlet end is communicated with the airbag; The airbag is pressed to introduce the gas in the airbag into the fuel tank through the air outlet, and the airbag is released to allow the airbag to rebound to replenish the external gas into the airbag through the air inlet. The air replenishing part body comprises: a top panel, a middle panel and a bottom panel, which are stacked in sequence, the air bag is connected to the top panel, the air outlet is connected to the side of the top panel, and the air inlet is connected to the bottom panel; A first gasket is sandwiched between the top panel and the middle panel, and a second gasket is sandwiched between the middle panel and the bottom panel; A one-way valve sheet is sandwiched between the top panel and the first gasket; When the air inlet end sucks in gas, the gas pushes open the one-way valve sheet, so that the gas flows into the airbag in one direction; The air supply device includes a first air duct and a second air duct, the first air duct is an air inlet channel, the second air duct is an air supply channel, the first air duct is composed of the air inlet end provided on the bottom panel, the middle panel, the one-way valve sheet, the top panel and the air bag, and the second air duct is composed of the air bag directly connected to the air outlet end provided on the top panel; The middle panel is provided with a first through hole, a first cavity and a second cavity, the top panel is provided with a second through hole, a third through hole, a fourth through hole, a fifth through hole, a sixth through hole, a third cavity and a fourth cavity, and the one-way valve sheet includes a first one-way valve sheet and a second one-way valve sheet; Among them, the gas flow direction in the first air duct includes: gas enters from the air inlet end, passes through the bottom panel to reach the middle panel, enters the second through hole through the first through hole, and then enters the third cavity through the transverse channel provided in the second through hole, gas enters the third through hole through the third cavity, the surface of the third through hole is covered with a first one-way valve sheet, the gas pushes open the first one-way valve sheet to enter the first cavity, passes through the first cavity and then enters the fourth cavity through the fourth through hole, the gas enters the fifth through hole through the fourth cavity, the fifth through hole is covered with a second one-way valve sheet, the gas pushes open the second one-way valve sheet to enter the second cavity, the second cavity is connected to the sixth through hole, and then the gas enters the airbag through the sixth through hole.

2. The internal combustion rock drill air supply system according to claim 1, characterized in that: A first filter screen is disposed in the air inlet end, and a second filter screen is disposed in the sixth through hole.

3. The internal combustion rock drill air supply system according to any one of claims 1 to 2, characterized in that: The bottom panel is provided with an assembly end, which is connected to the engine casing via the assembly end, so that the air supply device can be fixedly assembled on the engine casing.

4. An internal combustion rock drill, characterized in that: include: Power mechanism; The rock drilling device, the power mechanism is transmission-connected to the rock drilling device, the power mechanism drives the rock drilling device to operate, and the power mechanism is applicable to the internal combustion rock drilling machine air supply system as described in any one of claims 1-3.

Images