A down-the-hole hammer

Abstract

The utility model relates to the technical field of down -the -hole drill, specifically relates to a down -the -hole drill impactor, including impact subassembly, including impactor body, the one end of impactor body is provided with drill bit, the other end fixed air inlet pipe of impactor body, open and close subassembly sets up in impactor body, including open and close spare, open and close spare includes arc plate, arc plate with impactor body one side sliding connection, arc plate top is provided with the paddle, paddle one side is provided with the plug rod. When the piston and other core components appear abrasion or damage, do not need to disassemble the impactor as a whole, can directly through the middle open structure fast contact internal components, shorten the repair preparation time. The vibration produced by the impactor operation can limit the closing state of the sleeve, prevent the sleeve from loosening accidentally under the vibration, avoid the piston and other internal core components from being exposed to harsh environment, reduce the risk of component damage.

Description

Technical Field

[0001] This utility model relates to the field of down-the-hole drilling rig technology, and specifically to a down-the-hole drilling rig impactor. Background Technology

[0002] Down-the-hole drill impactors are the core components of drilling operations in open-pit mines. They can submerge inside the blast hole and drive the front drill bit to break rocks through high-frequency impact, providing precise blast holes for subsequent blasting operations. They are key equipment for ensuring drilling efficiency and quality and creating the basic conditions for blasting.

[0003] In the prior art, a hammer and down-the-hole drill with patent application number CN202321753970.X include: an outer sleeve, the rear end of which is connected to a connector, and the front end of which is connected to a drill bit via a chuck sleeve; a distribution rod fixedly disposed inside the outer sleeve and communicating with a high-pressure air passage of the connector; a piston slidably fitted on the outside of the distribution rod, with an inner sleeve fitted on the outside of the piston; a first air chamber formed between the connector, the piston, the inner sleeve, and the distribution rod; and a second air chamber formed between the drill bit, the piston, the outer sleeve, and the distribution rod; and an exhaust channel disposed on the connector, wherein the piston moves along the axial direction of the distribution rod so that the exhaust channel alternately communicates with the first and second air chambers. Compared with the prior art, the hammer and down-the-hole drill provided in this application can prevent residue clogging, have better slag removal effect, and higher drilling efficiency.

[0004] When core components such as the piston are worn or damaged, the sleeve cannot be opened from the middle, making it impossible to quickly inspect the internal core components. The impactor needs to be completely disassembled, which increases the time spent on maintenance, increases labor intensity, prolongs equipment downtime, and reduces work efficiency. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a down-the-hole drill impactor that can effectively solve the problem that when the core components such as the piston are worn or damaged, the sleeve cannot be opened from the middle, making it impossible to quickly inspect and repair the internal core components, and requiring the impactor to be completely disassembled.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a down-the-hole drill impactor, including an impact assembly and an impactor body. One end of the impactor body is provided with a drill bit, and the other end of the impactor body is fixed with an air inlet pipe.

[0008] An opening and closing assembly is disposed on the impactor body and includes an opening and closing member. The opening and closing member includes an arc-shaped plate, which is slidably connected to one side of the impactor body. A toggle plate is disposed on the top of the arc-shaped plate, and a plug is disposed on one side of the toggle plate.

[0009] Furthermore, the opening and closing assembly also includes a locking component, which includes a locking plate fixed to the top of the arc-shaped plate, and a locking rod is provided on one side of the locking plate.

[0010] Furthermore, a movable frame is hinged to one end of the locking rod, the actuating plate is fixed to one side of the movable frame, a positioning plate is hinged to the bottom of the movable frame, and the positioning plate is fixed to the top of the arc-shaped plate.

[0011] Furthermore, a locking block is fixed to one side of the positioning plate, and a movable block is provided at the bottom of the locking block. The movable block is hinged to one side of the movable frame.

[0012] Furthermore, a reset plate is fixed to one end of the movable block, a torsion spring is fixed to one side of the reset plate, and one end of the torsion spring is fixed to one side of the movable frame.

[0013] Furthermore, the opening and closing assembly also includes a vibrating element, which includes a piston rod fixed to one end of the insertion rod.

[0014] Furthermore, a support sleeve is movably connected to the outside of the piston rod, and a fixing block is provided on the outer sleeve of the support sleeve, with the fixing block fixed to the top of the arc-shaped plate.

[0015] Furthermore, a spring is fixed to one side of the piston rod, and one end of the spring is fixed to the inner wall of the support sleeve.

[0016] Compared with the known prior art, the technical solution provided by this utility model has the following beneficial effects: when core components such as pistons are worn or damaged, there is no need to disassemble the impactor as a whole. The internal components can be quickly contacted directly through the central opening structure, thus shortening the maintenance preparation time.

[0017] The vibration generated during the operation of the impactor can limit the closed state of the sleeve, preventing the sleeve from accidentally loosening under vibration, avoiding exposure of internal core components such as the piston to harsh environments, and reducing the risk of component damage. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. 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 overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the arc-shaped plate of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the toggle plate of this utility model;

[0022] Figure 4 This is a schematic diagram of the card block of this utility model;

[0023] Figure 5 This is a schematic cross-sectional view of the support sleeve of this utility model.

[0024] The labels in the diagram represent: 1. Impact assembly; 11. Impactor body; 12. Drill bit; 13. Air inlet pipe; 2. Opening and closing assembly; 21. Opening and closing part; 211. Arc plate; 212. Actuating plate; 213. Insert rod; 22. Locking part; 221. Locking plate; 222. Locking rod; 223. Movable frame; 224. Positioning plate; 225. Locking block; 226. Movable block; 227. Reset plate; 228. Torsion spring; 23. Vibrating part; 231. Piston rod; 232. Support sleeve; 233. Fixing block; 234. Spring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Example: A down-the-hole drill impactor, as shown in the attached document. Figure 1 -Appendix Figure 5 It includes an impact assembly 1, an impactor body 11, a drill bit 12 is provided at one end of the impactor body 11, and an air inlet pipe 13 is fixed at the other end of the impactor body 11.

[0028] The impactor body 11 is the core load-bearing and working component, integrating key components such as piston, cylinder, and air distribution valve group. It provides structural support and power transmission channel for drilling operations. The drill bit 12 breaks rocks and forms blast holes through the high-frequency impact energy transmitted by the impactor body 11. The air inlet pipe 13 provides the power medium for the impactor body 11, delivering compressed air into the impactor body 11 to drive the internal piston to reciprocate at high frequency to generate impact energy. At the same time, it carries atomized lubricating oil to lubricate the internal components of the impactor body 11 and assists in discharging rock powder generated during drilling.

[0029] The impactor body 11 drives the drill bit 12 to efficiently drill precise blast holes, creating key conditions for reducing the foundation rate. Its internal piston and air distribution mechanism work together to convert the compressed air delivered by the air intake pipe 13 into continuous high-frequency impact energy. This allows for the stable drilling of blast holes with the required angles, such as bottom holes, in areas prone to foundation formation at the bottom of open-pit mine benches. These blast holes form a coordinated blasting layout with conventional mining blast holes, enabling the explosive energy to accurately act on the rock mass with high resistance at the bottom of the bench. This avoids rock residue caused by insufficient blasting energy coverage in this area, thereby effectively reducing the foundation rate of open-pit mine blasting.

[0030] The opening and closing assembly 2 is disposed on the impactor body 11 and includes an opening and closing member 21. The opening and closing member 21 includes an arc plate 211. The arc plate 211 is slidably connected to one side of the impactor body 11. A toggle plate 212 is disposed on the top of the arc plate 211, and a plug rod 213 is disposed on one side of the toggle plate 212.

[0031] There are two arc-shaped plates 211, both of which are slidably connected to one side of the impactor body 11. A sealing gasket is fixed on one side of the arc-shaped plate 211, and a sealing gasket is also provided at the junction of the arc-shaped plate 211 and the impactor body 11. When the arc-shaped plate 211 is closed, the sealing gasket can be squeezed to maintain the seal. The limitation on the two arc-shaped plates 211 is released by moving the actuating plate 212. Then, the impactor body 11 can be opened by moving the arc-shaped plates 211 towards each other, which facilitates the operator to maintain the inside of the impactor body 11. A slot corresponding to the insertion rod 213 is provided on one side of the actuating plate 212. When the impactor body 11 vibrates during operation, the insertion rod 213 can be driven into the slot, thereby limiting the actuating plate 212 and preventing the actuating plate 212 from moving on its own.

[0032] Specifically, the opening and closing assembly 2 also includes a locking component 22, which includes a locking plate 221. The locking plate 221 is fixed to the top of the arc-shaped plate 211, and a locking rod 222 is provided on one side of the locking plate 221.

[0033] A locking groove corresponding to the locking rod 222 is provided on the locking plate 221. When the arc plate 211 is closed, the locking rod 222 is engaged with the locking groove on the locking plate 221 by moving the actuating plate 212, thereby limiting the locking plate 221 and making the two arc plates 211 fit tightly together.

[0034] Furthermore, a movable frame 223 is hinged to one end of the locking rod 222, and the actuating plate 212 is fixed to one side of the movable frame 223. A positioning plate 224 is hinged to the bottom of the movable frame 223, and the positioning plate 224 is fixed to the top of the arc plate 211.

[0035] When the toggle plate 212 moves, it can drive the movable frame 223 to move. The movement of the movable frame 223 can drive the locking rod 222 to move. The positioning plate 224 is used to support the movable frame 223 and prevent the movable frame 223 from shifting.

[0036] Preferably, a locking block 225 is fixed on one side of the positioning plate 224, and a movable block 226 is provided at the bottom of the locking block 225. The movable block 226 is hinged to one side of the movable frame 223.

[0037] After the toggle plate 212 is moved to engage the locking rod 222 with the locking groove on the locking plate 221, the movable block 226 can be engaged with the locking block 225, thereby limiting the toggle plate 212.

[0038] It should be noted that a reset plate 227 is fixed to one end of the movable block 226, and a torsion spring 228 is fixed to one side of the reset plate 227. One end of the torsion spring 228 is fixed to one side of the movable frame 223.

[0039] When it is necessary to release the limit on the toggle plate 212, the movable block 226 is moved. The movement of the movable block 226 can drive the reset plate 227 to rotate. At this time, the rotation of the reset plate 227 will apply a torsional force to the torsion spring 228. Then the movable block 226 separates from the locking block 225, thereby releasing the limit on the toggle plate 212. Then the movable block 226 is released. At this time, the force of the torsion spring 228 can drive the movable block 226 back to its original position for the next use.

[0040] A tension spring is fixed to one side of the arc plate 211. One end of the tension spring is fixed to one side of the impactor body 11. When the arc plate 211 is closed, a pulling force can be applied to the tension spring. When the limit on the arc plate 211 is released, the force of the tension spring's rebound can drive the arc plate 211 to open.

[0041] Furthermore, the opening and closing assembly 2 also includes a vibrating element 23, which includes a piston rod 231, and the piston rod 231 is fixed to one end of the insertion rod 213.

[0042] When the impactor body 11 vibrates during operation, it can drive the piston rod 231 to move. The movement of the piston rod 231 can drive the insertion rod 213 to move and engage with the slot.

[0043] Specifically, a support sleeve 232 is movably connected to the outside of the piston rod 231, and a fixing block 233 is provided on the outside of the support sleeve 232. The fixing block 233 is fixed to the top of the arc plate 211.

[0044] When the piston rod 231 moves, it can move within the support sleeve 232. The support sleeve 232 can support the piston rod 231, and the fixed block 233 can position the support sleeve 232.

[0045] Preferably, a spring 234 is fixed to one side of the piston rod 231, and one end of the spring 234 is fixed to the inner wall of the support sleeve 232.

[0046] When the impactor body 11 vibrates during operation, driving the piston rod 231 to reciprocate within the support sleeve 232, the spring 234 provides buffer for the reciprocating motion of the piston rod 231 through synchronous compression and rebound elastic deformation, absorbing the impact energy between the piston rod 231 and the support sleeve 232 during vibration, avoiding hard collision between the two and causing wear, ensuring the stability of component operation, and adjusting the reciprocating speed and stroke of the piston rod 231 through elastic force to ensure that the piston rod 231 drives the insertion rod 213 to reciprocate more smoothly within the slot.

[0047] When the impactor body 11 vibrates during operation, its surface components are prevented from falling off through the combined action of multiple locking mechanisms, structural support, and elastic adaptation. The arc-shaped plate 211 is slidably connected to the impactor body 11. After closing, it engages with the locking groove of the locking plate 221 through the locking rod 222 of the locking member 22, and achieves double fixation in conjunction with the limiting of the movable block 226 and the locking block 225. At the same time, the positioning plate 224 provides support for the movable frame 223, preventing the movable frame 223 and the actuating plate 212 fixed thereon from falling off due to vibration. The piston rod 231 One end is fixed to the insertion rod 213, and the outer side is movably connected to the support sleeve 232. The support sleeve 232 is fixed to the top of the arc plate 211 by the fixing block 233, forming a stable installation structure. The spring 234 is compressed and rebounded synchronously with the reciprocating movement of the piston rod 231, which not only buffers the vibration impact, but also maintains the connection stability between the piston rod 231 and the support sleeve 232. In addition, the torsion spring 228 keeps the movable block 226 in a limited state through the reset plate 227. The whole structure forms a multi-dimensional anti-loosening structure to ensure that each component remains stable during vibration.

[0048] When using the down-the-hole drill impactor for drilling operations, first ensure that the two arc plates 211 are in the closed state. The sealing gasket on one side of the arc plate 211 is tightly fitted with the impactor body 11 to ensure the sealing of the impactor body 11, prevent compressed air leakage or rock powder from entering the interior during operation, and protect the core components from damage.

[0049] Pushing the actuating plate 212 causes the movable frame 223 to rotate around the positioning plate 224. The movable frame 223 moves the locking rod 222, causing the locking rod 222 to engage in the locking groove of the locking plate 221, thus completing the initial fixation of the arc plate 211. Simultaneously, the movable frame 223 moves the movable block 226. Under the action of the torsion spring 228, the movable block 226 engages with the locking block 225 on one side of the positioning plate 224, thus limiting the actuating plate 212 and further fixing the arc plate 211 to prevent it from loosening during operation.

[0050] Connect the air intake pipe 13 to the compressed air source and start the equipment. Compressed air enters the impactor body 11 through the air intake pipe 13, driving the internal piston to reciprocate at high frequency to generate impact energy. The impact energy is transmitted to the drill bit 12, which breaks the rock to form a blast hole. During operation, the vibration generated by the impactor body 11 drives the piston rod 231 to reciprocate within the support sleeve 232. The piston rod 231 compresses and rebounds the spring 234, while simultaneously driving the insertion rod 213 to engage in the slot of the actuating plate 212. The double limit prevents the arc plate 211 from opening accidentally, ensuring that the internal core components are in a closed environment.

[0051] When core components such as pistons are worn or damaged and require maintenance, shut down the equipment and disconnect the air intake pipe 13. Press the movable block 226, which drives the reset plate 227 to rotate and twists the torsion spring 228. The movable block 226 separates from the locking block 225, releasing the limit on the toggle plate 212. Push the toggle plate 212 in the opposite direction, which drives the movable frame 223 and the locking rod 222 to move. The locking rod 222 disengages from the locking groove of the locking plate 221, releasing the fixation of the arc plate 211.

[0052] Two arc-shaped plates 211 slide in opposite directions. The arc-shaped plates 211 slide open along one side of the impactor body 11, exposing the internal core components without disassembling the impactor as a whole, thus shortening the maintenance preparation time. After maintenance is completed, the arc-shaped plates 211 are slid in the opposite direction to the closed state. The above locking operation is repeated to fix the arc-shaped plates 211. The air intake pipe 13 is then reconnected to resume operation.

[0053] In summary, when the core components are worn or damaged, there is no need to disassemble the entire impactor body 11. The internal components can be quickly accessed by opening the central arc plate 211, thus shortening the maintenance preparation time.

[0054] The vibration generated by the impactor body 11 during operation can limit the closed state of the arc plate 211, preventing the arc plate 211 from accidentally loosening under vibration, avoiding exposure of internal components to harsh environments, and reducing the risk of component damage.

[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A down-the-hole drill impactor, comprising, characterized in that, The impact assembly (1) includes an impactor body (11), one end of which is provided with a drill bit (12), and the other end of which is fixed with an air inlet pipe (13). An opening and closing assembly (2) is disposed on the impactor body (11) and includes an opening and closing member (21). The opening and closing member (21) includes an arc plate (211). The arc plate (211) is slidably connected to one side of the impactor body (11). A toggle plate (212) is disposed on the top of the arc plate (211), and a plug rod (213) is disposed on one side of the toggle plate (212).

2. The down-the-hole drill impactor according to claim 1, characterized in that, The opening and closing assembly (2) also includes a locking member (22), which includes a locking plate (221). The locking plate (221) is fixed to the top of the arc plate (211), and a locking rod (222) is provided on one side of the locking plate (221).

3. The down-the-hole drill impactor according to claim 2, characterized in that, One end of the locking rod (222) is hinged to a movable frame (223), the actuating plate (212) is fixed to one side of the movable frame (223), and a positioning plate (224) is hinged to the bottom of the movable frame (223). The positioning plate (224) is fixed to the top of the arc plate (211).

4. The down-the-hole drill impactor according to claim 3, characterized in that, A locking block (225) is fixed on one side of the positioning plate (224), and a movable block (226) is provided at the bottom of the locking block (225). The movable block (226) is hinged to one side of the movable frame (223).

5. The down-the-hole drill impactor according to claim 4, characterized in that, One end of the movable block (226) is fixed with a reset plate (227), and a torsion spring (228) is fixed on one side of the reset plate (227). One end of the torsion spring (228) is fixed to one side of the movable frame (223).

6. The down-the-hole drill impactor according to claim 5, characterized in that, The opening and closing assembly (2) also includes a vibrating element (23), which includes a piston rod (231) and is fixed to one end of the insertion rod (213).

7. The down-the-hole drill impactor according to claim 6, characterized in that, The piston rod (231) is movably connected to a support sleeve (232), and a fixing block (233) is provided on the outer side of the support sleeve (232). The fixing block (233) is fixed to the top of the arc plate (211).

8. The down-the-hole drill impactor according to claim 7, characterized in that, A spring (234) is fixed to one side of the piston rod (231), and one end of the spring (234) is fixed to the inner wall of the support sleeve (232).

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