Iron tower steel drilling equipment

Abstract

Iron tower steel drilling equipment comprises a mounting frame and a drill bit which is arranged on the mounting frame and moves up and down or left and right along with the mounting frame, a spray gun is further arranged on the mounting frame, a filter screen piece is arranged at the tail end of the spray gun, and the spray gun is arranged close to the drill bit. A working pipeline, a working water path and a flushing water path are arranged in the spray gun, the working water path and the flushing water path are respectively connected with the working pipeline, the working water path in the spray gun is a passage when the drill bit works, the flushing water path is a passage when the backwashing assembly is matched with the spray gun, and impurities in the working pipeline flow to the outside along with the flushing water path. Compared with the prior art, the utility model has the beneficial effects that the technical scheme realizes the separated design of the working water path and the flushing water path by arranging the backwashing assembly, the working water path provides cooling and lubricating fluid when the drill bit is operated, and the flushing water path automatically and efficiently discharges impurities in the working pipeline during backwashing, so that the flushing efficiency is obviously improved, and the service life of the drill bit is prolonged. And a working pipeline is not easy to block.

Description

Technical Field

[0001] This utility model relates to a processing equipment, and more particularly to a drilling equipment for steel towers. Background Technology

[0002] In the manufacturing of transmission line towers, precise drilling of steel components is a core process for ensuring structural connection strength and assembly accuracy. Currently, tower angle steel, steel plates, and other profiles require the machining of numerous bolt holes on specialized drilling machines. The typical process involves the operator first marking the hole positions according to drawings and then firmly clamping the steel onto the worktable. The equipment is then started, and a high-speed rotating carbide drill bit, driven by hydraulic pressure or a servo motor, performs penetrating drilling along a preset path. During this process, to cool the drill bit, reduce frictional heat, and remove metal debris, coolant (usually a water-based emulsion) is continuously sprayed through nozzles integrated near the drill bit. This process is widely used in the mass production of key components such as main tower joint plates and crossarm connecting plates; the drilling accuracy directly affects the stability and safety of the overall tower structure.

[0003] However, existing drilling equipment has significant drawbacks in practical workshop applications. Its built-in coolant spray system is highly susceptible to contamination from workshop dust, metal particles, and other impurities. These contaminants flow back with the coolant or adhere directly to the inside of the nozzles and pipes, causing gradual nozzle blockage, reduced flow, and even complete failure. This not only reduces cooling and lubrication effects and accelerates drill bit wear but can also lead to equipment malfunctions due to localized overheating. Crucially, cleaning and maintaining clogged nozzles or pipes using existing technology is extremely cumbersome—operators must stop the machine and spend considerable time completely disassembling the entire coolant delivery unit (including nozzles, connecting pipes, and some pumps and valves) from the drilling machine body before cleaning or unblocking can be performed. This complete disassembly severely disrupts the production process, resulting in high maintenance costs and low efficiency, becoming a bottleneck restricting the improvement of tower processing efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a drilling device for steel towers that facilitates cleaning of their cleaning systems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a drilling device for steel towers, comprising a mounting frame and a drill bit mounted on the mounting frame and moving up and down or left and right thereafter. The mounting frame also includes a spray gun, the end of which is equipped with a filter screen and positioned close to the drill bit. The device further includes a backwashing assembly. The spray gun contains a working pipe and a working water path and a flushing water path connected to the working pipe. When the drill bit is working, the working water path within the spray gun is open. When the backwashing assembly cooperates with the spray gun, the flushing water path is open, and impurities in the working pipe flow to the outside through the flushing water path.

[0006] The beneficial effects of this invention are as follows: This technical solution, by setting up a backflushing component, achieves a separate design for the working water path and the flushing water path. During drill bit operation, the working water path provides cooling and lubricating fluid, while during backflushing, the flushing water path automatically and efficiently discharges impurities from the working pipe, thereby significantly improving flushing efficiency (e.g., reducing manual intervention time) and ensuring that the working pipe is not easily blocked, extending the service life of the equipment. Simultaneously, this design simplifies the maintenance process; operators can complete flushing without disassembling the spray gun, improving convenience and safety. As a preferred embodiment, the backflushing component may include a detachable sealing unit (e.g., a pressure-driven structure) that cooperates with the spray gun to form a closed chamber. When the working fluid is continuously input, the pressure inside the chamber gradually increases to above a threshold, forcing impurities to flow backward and be discharged through the flushing water path, thus avoiding fluid backflow problems. Furthermore, the sealing unit can use elastic materials (such as rubber gaskets) for quick connection, ensuring seamless flushing and further optimizing fluid dynamics performance. Through these structures, the equipment can operate stably even in high-temperature or high-dust environments, reducing downtime maintenance frequency and fluid waste.

[0007] Furthermore, a first check valve is provided between the working water path and the working pipe, allowing fluid to flow only from the working water path toward the working pipe, and a filter screen is provided outside the first check valve; a second check valve is provided between the flushing water path and the working pipe, allowing fluid to flow only from the working pipe toward the flushing water path.

[0008] This technical solution effectively isolates the working water path and the flushing water path by adding a first and second one-way valve, supplemented by a filter structure. This prevents impurities from entering the working water path, thus ensuring fluid cleanliness and avoiding equipment failure or efficiency reduction caused by impurity accumulation. Simultaneously, the filter forms a physical barrier outside the one-way valves, intercepting large particles of impurities and ensuring the working fluid (such as cooling water) remains pure, improving drilling accuracy and equipment reliability. As a preferred approach, the first one-way valve can employ a spring-loaded valve core design (e.g., based on the cooperation of the valve seat and spring). When the fluid pressure in the working water path is higher than that in the working pipe, the valve core automatically opens to allow fluid inflow; conversely, it closes to prevent backflow. The filter is a replaceable mesh structure (such as a stainless steel screen), with its pore size customized according to the size of the impurities, facilitating cleaning or replacement during regular maintenance. This achieves automatic fluid guidance without the need for additional control components, simplifying system complexity and reducing the risk of fluid cross-contamination, making it suitable for high-frequency drilling environments.

[0009] Furthermore, the backwashing assembly includes a flushing pipe, a pressure plate disposed inside the flushing pipe, and flushing springs whose two ends are respectively fixed to the bottom of the pressure plate and the bottom of the flushing pipe. The flushing pipe is sleeved on the spray gun and forms a sealed environment therewith.

[0010] This technical solution creates a dynamic sealed environment on the spray gun through a combination of a flushing pipe, a pressure plate, and a flushing spring. It automatically triggers the flushing process based on fluid pressure changes, efficiently removing impurities (such as iron filings or oil) from the filter screen, improving flushing effectiveness and operational reliability. When the flushing pipe is connected, the pressure within the sealed environment accumulates to the opening threshold of the second one-way valve, causing impurities to be discharged in the reverse direction with the fluid, avoiding the tedious manual disassembly. Simultaneously, the spring design ensures the pressure plate returns to its original position, maintaining system stability. As a preferred approach, the pressure plate can be designed as a disc-shaped structure (such as metal or polymer material), which fits with the inner wall of the flushing pipe. When fluid rushes in, it pushes the pressure plate to compress the spring, and upon reaching a critical position, the pressure surges, triggering the second one-way valve. The flushing spring is a linear spring (such as stainless steel), with its preload at bottom slightly higher than the second one-way valve threshold, ensuring the flushing process only starts automatically when needed. This optimizes fluid energy utilization, reduces flushing time, and prevents overpressure damage, making it suitable for continuous operation scenarios.

[0011] Furthermore, the backwashing assembly also includes a flow port disposed on the mounting bracket and a wastewater tank that cooperates with it, wherein the flow port is the outlet of the flushing water path.

[0012] This technical solution integrates a flow outlet and a wastewater tank to centrally collect flushed impurities, preventing leakage and environmental contamination, and improving the equipment's environmental friendliness and ease of maintenance. The wastewater tank can be emptied periodically, reducing downtime, while the flow outlet design ensures unobstructed flushing water flow, avoiding blockages or leaks. As a preferred option, the flow outlet can be configured with a flange connection (such as a quick-connect coupling with a gasket) to directly connect to the wastewater tank inlet. The wastewater tank can be equipped with a sedimentation zone (such as an inclined plate design) to allow impurities to settle before the fluid is recirculated or discharged. Furthermore, the wastewater tank is made of corrosion-resistant materials (such as polyethylene), and its volume is customized according to the flushing frequency for easy relocation and replacement. This achieves closed-loop waste management, reduces secondary pollution, and improves resource utilization.

[0013] Furthermore, the opening of the flushing pipe is provided with several snap-fit ​​strips along the circumference, and the spray gun is provided with a corresponding snap-fit ​​groove inside the snap-fit ​​strip. As the snap-fit ​​strip enters the snap-fit ​​groove, it gradually forms an expansion and tightening fit with the spray gun.

[0014] This technical solution achieves a reliable sealed connection between the flushing pipe and the spray gun through the matching design of the snap-fit ​​strip and the slot, ensuring a stable sealing environment during flushing, preventing fluid leakage, and improving flushing efficiency and operational safety. The expansion fit automatically tightens during insertion, simplifying the installation process, eliminating the need for additional tools, and enhancing structural durability. As a preferred method, the snap-fit ​​strip can be designed with wedge-shaped protrusions (such as rubber or plastic) evenly distributed circumferentially. When the snap-fit ​​strip slides into the slot, the protrusions expand outward under the pressure of the slot wall, forming a radial pressure seal. The slot is designed as a tapered channel (such as a V-groove), its depth and angle matching the shape of the snap-fit ​​strip to ensure a gap-free fit. This optimizes connection strength, is suitable for vibration environments, and reduces wear.

[0015] Furthermore, the mounting bracket includes a support column, a guide portion, and a sliding member. The support column extends vertically, the guide portion extends laterally and is rotatably disposed at the upper end of the support column, the sliding member is slidably disposed on the guide portion, and the drill bit and spray gun are both disposed on the sliding member and extend downward.

[0016] This technical solution, through the combination of support columns, guide parts, and sliding components, enables multi-directional flexible movement of the drill bit and spray gun (such as vertical lifting and horizontal translation), adapting to different steel material positions and drilling angles, thus improving equipment versatility and operational precision. The rotating design of the guide part facilitates adjustment of the drilling direction, while the sliding component ensures smooth movement and reduces vibration interference. As a preferred approach, the guide part can be designed as a rack and pinion transmission structure (such as an aluminum alloy guide rail), with its rotation shaft fixed to the support column by bearings, allowing for manual or motor-driven rotation by the operator; the sliding component uses a slider that cooperates with the guide rail (such as a linear bearing), with an internal locking mechanism (such as bolt fixing points) that locks the position after movement, ensuring drilling stability. This optimizes space utilization, is suitable for large iron tower structures, and reduces manual adjustment time. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the spray gun in an embodiment of the present invention;

[0019] Figure 3 This is an isometric view of the backwashing assembly according to an embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of the flushing tube according to an embodiment of the present invention. Detailed Implementation

[0021] This utility model embodiment provides a drilling device for steel towers, such as... Figure 1-4As shown: the device includes a mounting frame 11 and a drill bit 12. The mounting frame 11 supports the entire device and allows it to move up and down or left and right to adapt to different drilling positions. The drill bit 12 is mounted on the mounting frame 11 and is driven by a motor to rotate during drilling to form holes in the steel of the tower. This is a common drilling function implementation method in the art. A spray gun 13 is also mounted on the mounting frame 11. The spray gun 13 is arranged close to the drill bit 12 to provide cooling and lubrication during drilling. A filter screen 131 is provided at the end of the spray gun 13 to filter impurities in the fluid and prevent large particles from entering the working area. A working pipe 132 is provided inside the spray gun 13. The working pipe 132 is connected to a working water channel 133 and a flushing water channel 134. The working water channel 133 provides a clean fluid passage when the drill bit 12 is working, and the flushing water channel 134 is used to discharge impurities during backwashing. In addition, the device also includes a backwashing assembly 14. When the drill bit 12 is working, the working water passage 133 in the spray gun 13 is open, and the fluid flows to the filter screen 131 through the working pipe 132. When the backwashing assembly 14 is used in conjunction with the spray gun 13, the flushing water passage 134 is open, and the impurities in the working pipe 132 flow to the outside with the flushing water passage 134, thereby effectively preventing blockage.

[0022] In the structure of the spray gun 13, a first one-way valve 135 is provided between the working water passage 133 and the working pipe 132. This first one-way valve 135 only allows fluid to flow from the working water passage 133 towards the working pipe 132. A filter screen 136 is provided outside the first one-way valve 135 to prevent impurities from entering the working water passage 133. A second one-way valve 137 is provided between the rinsing water passage 134 and the working pipe 132. This second one-way valve 137 only allows fluid to flow from the working pipe 132 towards the rinsing water passage 134. This design ensures the cleanliness of the working water passage and the rinsing efficiency. The backwash assembly 14 includes a rinsing pipe 141. A pressure plate 142 and a rinsing spring 143 are provided inside the rinsing pipe 141. The two ends of the rinsing spring 143 are fixed to the bottom end of the pressure plate 142 and the bottom of the rinsing pipe 141, respectively. The rinsing pipe 141 is sleeved on the spray gun 13 and forms a sealed environment with it to achieve efficient rinsing. The backwash assembly 14 also includes a flow port 146 disposed on the mounting bracket 11 and a wastewater tank 147 that cooperates with it. The flow port 146 is the outlet of the flushing water path 134 and is used to collect and discharge flushing wastewater. Several snap-fit ​​strips 144 are disposed circumferentially at the opening of the flushing pipe 141. The spray gun 13 is provided with a slot 145 corresponding to the snap-fit ​​strips 144. As the snap-fit ​​strips 144 enter the slot 145, they gradually form an expansion and tightening fit with the spray gun 13 to ensure a reliable seal. Mounting bracket 11 includes a support column 111, a guide portion 112, and a sliding member 113. The support column 111 extends vertically to provide stable support. The guide portion 112 extends laterally and is rotatably disposed at the upper end of the support column 111 to achieve horizontal adjustment. The sliding member 113 is slidably disposed on the guide portion 112. The drill bit 12 and the spray gun 13 are both disposed on the sliding member 113 and extend downward, thereby adjusting the up-down or left-right positions of the drill bit 12 and the spray gun 13 by moving the sliding member 113.

[0023] The working principle of the device is as follows: During drilling, the drill bit 12 starts and rotates, and at the same time the working water channel 133 is opened. The fluid enters the working pipe 132 through the first one-way valve 135 and the filter screen 136, and is sprayed out from the end of the spray gun 13 to cool the drill bit 12 and flush the drilling area. The filter screen 131 filters impurities in the fluid and prevents external impurities from entering the working pipe. The first one-way valve 135 prevents backflow and ensures that the fluid flows in one direction. When backwashing is required, the operator places the flushing pipe 141 of the backwashing assembly 14 onto the spray gun 13. The snap-fit ​​strip 144 and the slot 145 form a tight fit to create a sealed environment. Water continuously flows out of the working water channel 133. The fluid in the sealed environment presses against the pressure plate 142 and pushes it downward, compressing the flushing spring 143. When the pressure plate 142 descends to a position before the flushing spring 143 touches the bottom, the fluid pressure in the sealed environment increases beyond the threshold of the second one-way valve 137. The second one-way valve 137 opens, and impurities and fluid are discharged into the wastewater tank 147 through the flow port 146 via the flushing water channel 134, completing automatic and efficient flushing and preventing the filter screen 131 and the working pipe 132 from becoming clogged.

[0024] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A drilling device for steel towers, comprising a mounting frame and a drill bit disposed on the mounting frame and moving up and down or left and right therewith, wherein a spray gun is also disposed on the mounting frame, the end of the spray gun is provided with a filter screen and the spray gun is positioned close to the drill bit, characterized in that: It also includes a backwashing assembly. The spray gun is equipped with a working pipe and a working water path and a flushing water path connected to the working pipe. When the drill bit is working, the working water path in the spray gun is open. When the backwashing assembly is used in conjunction with the spray gun, the flushing water path is open and impurities in the working pipe flow to the outside with the flushing water path.

2. The drilling equipment for steel towers according to claim 1, characterized in that: A first check valve is provided between the working water passage and the working pipe, allowing fluid to flow only from the working water passage toward the working pipe, and a filter screen is provided outside the first check valve; a second check valve is provided between the flushing water passage and the working pipe, allowing fluid to flow only from the working pipe toward the flushing water passage.

3. The drilling equipment for steel towers according to claim 2, characterized in that: The backwashing assembly includes a flushing pipe, a pressure plate disposed inside the flushing pipe, and flushing springs whose two ends are respectively fixed to the bottom of the pressure plate and the bottom of the flushing pipe. The flushing pipe is sleeved on the spray gun and forms a sealed environment therewith.

4. The drilling equipment for steel towers according to claim 3, characterized in that: The backwash assembly also includes a flow port on the mounting frame and a wastewater tank that works in conjunction with it, the flow port being the outlet of the flushing water path.

5. The drilling equipment for steel towers according to claim 3, characterized in that: The opening of the flushing pipe is provided with several snap-fit ​​strips along the circumference, and the spray gun is provided with a corresponding snap-fit ​​groove inside the snap-fit ​​strip. As the snap-fit ​​strip enters the snap-fit ​​groove, it gradually forms a tight fit with the spray gun.

6. The drilling equipment for steel towers according to claim 1, characterized in that: The mounting bracket includes a support column, a guide portion, and a sliding member. The support column extends vertically, the guide portion extends laterally and is rotatably disposed at the upper end of the support column, and the sliding member is slidably disposed on the guide portion. The drill bit and the spray gun are both disposed on the sliding member and extend downward.

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