Braking device of coal mine drilling machine

Abstract

The utility model discloses a braking device of a coal mine drilling machine, which belongs to the field of coal mine drilling and comprises a drilling component, a pair of symmetrical braking components are arranged on the upper portion of the drilling component, a cooling component is arranged outside the braking components, and the cooling component is matched with the drilling component. The drilling assembly comprises a frame, a motor is fixedly connected to the top end of the frame, a lead screw is fixedly connected to the transmission end of the motor, the bottom end of the lead screw penetrates through the top end of the frame and extends into the frame, and the lead screw is rotationally connected with the frame. The friction block is quickly pushed to be tightly attached to the fixing disc, efficient and accurate braking of the drill rod is achieved, safety and stability of coal mine drilling operation are guaranteed, liquid is evenly sprayed to the fixing disc, the friction block and other parts which generate heat in cooperation with a spray head, the equipment temperature is effectively lowered, and the problems of abrasion, aging and the like of parts caused by high temperature are solved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine drilling, and in particular to a braking device for coal mine drilling. Background Technology

[0002] In the field of coal mining, drilling is a fundamental and crucial step, and its efficiency and safety directly affect the progress and profitability of the entire mining operation. Coal mine drilling rigs are typically powered by electric motors or hydraulic motors. Power is transmitted to the drill rod and drill bit through transmission devices such as gearboxes and couplings. The function of the transmission device is to convert the speed and torque of the power source into speed and torque suitable for drilling operations and to ensure that the drill rod can rotate stably. However, after drilling is completed, the drill rod and drill bit will still rotate to some extent, which may affect the drilling results.

[0003] For example, Chinese Patent Application Publication No. CN202421415830.6 discloses an automatic drilling and monitoring device for coal mine drilling rigs. This solution includes a base, a body, and drilling equipment. The outer shell of the drilling equipment is equipped with a cylindrical shell, and a circular hole is opened on the bottom surface of the inner shell of the cylindrical shell to drive the drilling equipment to rotate, thereby facilitating drilling at different locations. However, the drilling equipment of the coal mine drilling rig mentioned in the above patent does not have a braking mechanism after drilling. After drilling is completed, the drill rod and drill bit will still rotate to a certain extent, which may affect the drilling effect. Secondly, when an emergency occurs in the coal mine, the operator needs to stop the drilling rig quickly. The braking device can stop the drilling rig from rotating in a short time, allowing personnel and equipment to get out of danger as soon as possible, buying time for emergency response and reducing accident losses.

[0004] Therefore, we propose a braking device for coal mine drilling machines. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a braking device for coal mine drilling machines. Through an electric push rod and a movable block and push-pull block with an inclined surface design, the friction block is quickly pushed to fit tightly against the fixed plate, thereby achieving efficient and precise braking of the drill rod, ensuring the safety and stability of coal mine drilling operations. In addition, the nozzle evenly sprays liquid onto the fixed plate and friction block and other parts that generate heat, effectively reducing the equipment temperature and reducing problems such as wear and aging of parts caused by high temperature.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A braking device for a coal mine drilling machine includes a drilling assembly. A pair of symmetrical braking assemblies are disposed on the upper part of the drilling assembly. A cooling assembly is disposed outside the braking assembly and is adapted to the drilling assembly. The drilling assembly includes a frame. A motor is fixedly connected to the top of the frame. A lead screw is fixedly connected to the transmission end of the motor. The bottom end of the lead screw extends through the top of the frame and into the interior of the frame. The lead screw is rotatably connected to the frame. A lifting sleeve is connected to the outer wall of the lead screw via a threaded sleeve. A motor is fixedly connected to the top of the lifting sleeve. A drill rod is fixedly connected to the top of the motor. The bottom end of the drill rod extends through the bottom of the lifting sleeve and the frame. The drill rod is rotatably connected to both the lifting sleeve and the frame. A pair of symmetrical fixed discs are fixedly connected to the middle of the drill rod. The braking assembly includes a pair of symmetrical fixed supports fixedly installed at the bottom of the lifting sleeve. A pair of symmetrical sliders are slidably connected to the inner end of each fixed support. A friction block is fixedly connected to the end of each slider away from the fixed support. The friction block is located outside the fixed disc and is in contact with the fixed disc.

[0008] The drilling assembly performs the basic drilling action. The motor drives the lead screw to rotate, and the lifting sleeve is raised and lowered through the screw sleeve, thereby adjusting the height of the drill rod. The motor drives the drill rod to rotate to drill. The braking assembly has a fixed bracket, slider, and friction block. When needed, the friction block is put into contact with the fixed plate to brake the drill rod. The cooling assembly is set outside the braking assembly and is adapted to the drilling assembly. It is used to cool the device in the future.

[0009] Furthermore, a slide rod is fixedly connected inside the frame, the slide rod is symmetrical to the lead screw, and the slide rod is slidably connected to the lifting sleeve.

[0010] Furthermore, the fixed bracket has a pair of symmetrical movable blocks slidably connected inside.

[0011] Furthermore, the end of the slider away from the friction block passes through the inner end of the fixed bracket and is fixedly connected to the movable block.

[0012] Furthermore, an electric push rod is fixedly connected to the outer end of the fixed bracket. The transmission end of the electric push rod passes through the outer end of the fixed bracket and extends into the interior of the fixed bracket, where a push-pull block is fixedly connected. The push-pull block is slidably connected to the movable block.

[0013] Furthermore, the inner end of the push-pull block is inclined, the inner end of the movable block is inclined, and the inclined surface of the movable block is adapted to the inclined surface of the push-pull block.

[0014] Furthermore, the cooling assembly includes a pair of symmetrical storage tanks fixedly installed on the outside of the fixed bracket. An inclined block is fixedly connected to the bottom of the storage tank. A water pump is provided on the inner side of the inclined block. The water pump is fixedly connected to the storage tank. A delivery pipe is fixedly connected to the output end of the water pump. The end of the delivery pipe away from the water pump passes through the outer wall of the storage tank.

[0015] Furthermore, a fixed platform is fixedly connected to the inner end of the storage tank, and a nozzle is fixedly connected to the inner end of the fixed platform. The nozzle is located inside a pair of fixed discs and is adapted to the fixed discs.

[0016] In summary, this utility model has the following beneficial effects:

[0017] 1. High-efficiency and precise braking: In the event of an emergency requiring braking during drilling, the electric push rod can respond quickly. Through a clever inclined structure design, it rapidly pushes the friction block to fit tightly against the fixed plate, achieving high-efficiency and precise braking of the drill rod. This greatly shortens the braking time, avoids safety hazards and equipment damage caused by the continuous rotation of the drill rod, and significantly improves braking efficiency compared to traditional braking methods, ensuring the safety and stability of coal mine drilling operations.

[0018] 2. Cooling Protection Equipment: The large amount of heat generated during braking can pose a significant threat to the performance and lifespan of the equipment. The cooling components of this device can play a timely role. The water pump accurately delivers the liquid collected by the inclined block in the storage tank to the nozzle through the delivery pipe. The nozzle evenly sprays the liquid onto the fixed plate and friction block, which generate heat, quickly removes the heat, effectively reduces the temperature of the equipment, reduces wear and aging of parts caused by high temperature, extends the overall service life of the equipment, and reduces equipment maintenance costs.

[0019] 3. Convenient and flexible operation: The entire operation process of the device is simple and convenient; the motor drives the lead screw to flexibly adjust the height of the drill rod, and the motor drives the drill rod to perform drilling operations. Braking and releasing the brake are easily achieved by the extension and retraction of the electric push rod; all components work together, and the operator can quickly and accurately control the device according to the actual operation needs, which greatly improves the efficiency and flexibility of coal mine drilling operations, adapts to the complex and ever-changing coal mining environment, and enhances the overall operation efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure in this embodiment;

[0021] Figure 2 This is a schematic diagram of the overall front view structure in this embodiment;

[0022] Figure 3 This is a schematic diagram of the internal structure of the drilling assembly in this embodiment;

[0023] Figure 4 This is a schematic diagram of the braking assembly in this embodiment;

[0024] Figure 5 This is a schematic diagram of the internal structure of the braking assembly in this embodiment;

[0025] Figure 6 This is a schematic diagram of the cooling component in this embodiment;

[0026] Figure 7 This is a schematic diagram of the disassembled braking assembly in this embodiment;

[0027] Figure 8 This is a schematic diagram of the structure of the movable block and the push-pull block in the braking assembly of this embodiment.

[0028] In the diagram, 1. Drilling assembly; 2. Braking assembly; 3. Cooling assembly; 101. Frame; 102. Slide rod; 103. Motor; 104. Lead screw; 105. Lifting sleeve; 106. Motor; 107. Drill rod; 108. Fixed plate; 201. Fixed bracket; 202. Movable block; 203. Slider; 204. Friction block; 205. Electric push rod; 206. Push-pull block; 301. Storage tank; 302. Inclined block; 303. Water pump; 304. Delivery pipe; 305. Fixed platform; 306. Nozzle. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0031] Reference Figures 1-8As shown, a preferred embodiment of the present invention provides a braking device for a coal mine drilling machine, including a drilling assembly 1. A pair of symmetrical braking assemblies 2 are arranged on the upper part of the drilling assembly 1. A cooling assembly 3 is arranged outside the braking assembly 2, and the cooling assembly 3 is adapted to the drilling assembly 1. The drilling assembly 1 includes a frame 101. A motor 103 is fixedly connected to the top of the frame 101. A lead screw 104 is fixedly connected to the transmission end of the motor 103. The bottom end of the lead screw 104 extends through the top of the frame 101 into the interior of the frame 101. The lead screw 104 is rotatably connected to the frame 101. A lifting sleeve 105 is connected to the outer wall of the lead screw 104 via a threaded sleeve. A motor is fixedly connected to the top of the lifting sleeve 105. The motor 106 has a drill rod 107 fixedly connected to its top end. The bottom end of the drill rod 107 passes through the bottom end of the lifting sleeve 105 and the frame 101. The drill rod 107 is rotatably connected to the lifting sleeve 105 and the frame 101. A pair of symmetrical fixed discs 108 are fixedly connected to the middle of the drill rod 107. The braking assembly 2 includes a pair of symmetrical fixed brackets 201 fixedly installed at the bottom end of the lifting sleeve 105. A pair of symmetrical sliders 203 are slidably connected to the inner end of the fixed brackets 201. A friction block 204 is fixedly connected to the end of the slider 203 away from the fixed brackets 201. The friction block 204 is located outside the fixed disc 108 and is in contact with the fixed disc 108.

[0032] The drilling assembly 1 performs the basic drilling action. The motor 103 drives the lead screw 104 to rotate, and the lifting sleeve 105 is raised and lowered through the screw sleeve, thereby adjusting the height of the drill rod 107. The motor 106 drives the drill rod 107 to rotate for drilling. The braking assembly 2 has a fixed bracket 201, a slider 203, and a friction block 204. When needed, the friction block 204 is made to fit against the fixed plate 108 to brake the drill rod 107. The cooling assembly 3 is set outside the braking assembly 2 and is adapted to the drilling assembly 1 for subsequent cooling of the device.

[0033] The frame 101 is internally fixedly connected to a slide rod 102, which is symmetrical to the lead screw 104 and is slidably connected to the lifting sleeve 105.

[0034] The slide bar 102 inside the frame 101 is symmetrical to the lead screw 104 and is slidably connected to the lifting sleeve 105. It plays a guiding and stabilizing role when the lifting sleeve 105 is raised and lowered, ensuring that the lifting sleeve 105 is raised and lowered smoothly along the direction of the lead screw 104 and preventing the lifting sleeve 105 from deviating during the raising and lowering process.

[0035] The fixed bracket 201 has a pair of symmetrical movable blocks 202 internally slidingly connected;

[0036] The movable block 202, which is slidably connected inside the fixed bracket 201, provides a movable base component for subsequent cooperation with other parts to realize the movement of the friction block 204. It is a component of the braking assembly 2 to realize the braking action and provides structural possibility for the realization of the braking action.

[0037] The end of the slider 203 away from the friction block 204 passes through the inner end of the fixed bracket 201 and is fixedly connected to the movable block 202;

[0038] The end of the slider 203 away from the friction block 204 passes through the inner end of the fixed bracket 201 and is fixedly connected to the movable block 202, so that the movement of the movable block 202 can drive the slider 203 and the friction block 204 to move, thereby realizing the contact or separation of the friction block 204 and the fixed plate 108, achieving the effect of braking or releasing the drill rod 107.

[0039] An electric push rod 205 is fixedly connected to the outer end of the fixed bracket 201. The transmission end of the electric push rod 205 passes through the outer end of the fixed bracket 201 and extends into the interior of the fixed bracket 201 and is fixedly connected to a push-pull block 206. The push-pull block 206 is slidably connected to the movable block 202.

[0040] The extension and retraction of the electric push rod 205 drives the push-pull block 206 to move, which in turn pushes the movable block 202 to move, ultimately achieving the engagement or separation of the friction block 204 and the fixed plate 108, thus achieving the purpose of braking or releasing the drill rod 107. The electric push rod 205 provides the power source.

[0041] The inner end of the push-pull block 206 is set with an inclined surface, and the inner end of the movable block 202 is set with an inclined surface. The inclined surface of the movable block 202 is adapted to the inclined surface of the push-pull block 206.

[0042] By using the inclined surface design, the pushing force of the push-pull block 206 can be converted into the sliding force of the movable block 202 within the fixed bracket 201, ensuring that the braking assembly 2 can accurately and effectively perform braking and releasing actions.

[0043] The cooling component 3 includes a pair of symmetrical storage tanks 301 fixedly installed on the outside of the fixed bracket 201. An inclined block 302 is fixedly connected to the bottom of the storage tank 301. A water pump 303 is provided on the inner side of the inclined block 302. The water pump 303 is fixedly connected to the storage tank 301. A delivery pipe 304 is fixedly connected to the output end of the water pump 303. The end of the delivery pipe 304 away from the water pump 303 passes through the outer wall of the storage tank 301.

[0044] The storage tank 301 outside the fixed bracket 201 is used to store the cooling liquid. The inclined block 302 facilitates the concentration of the liquid to the water pump 303. The water pump 303 outputs the liquid in the storage tank 301 through the delivery pipe 304, providing the function of liquid delivery for subsequent cooling of the device. This realizes the storage and delivery effect of the cooling component 3 on the liquid, providing the prerequisite for cooling operation.

[0045] A fixed platform 305 is fixedly connected to the inner end of the storage tank 301, and a nozzle 306 is fixedly connected to the inner end of the fixed platform 305. The nozzle 306 is located inside a pair of fixed discs 108 and is adapted to the fixed discs 108.

[0046] The nozzle 306 is fixedly connected to the fixed platform 305 at the inner end of the storage tank 301. The nozzle 306 is located inside a pair of fixed plates 108 and is adapted to the fixed plates 108, so that the cooling liquid output by the water pump 303 and the delivery pipe 304 can be accurately sprayed onto the fixed plates 108 and the surrounding area through the nozzle 306 to cool down the parts that generate heat during the braking process, effectively reduce the temperature of the device during operation, and ensure the normal operation and service life of the device.

[0047] Specific implementation process: First, start the motor 103, which drives the lead screw 104 to start rotating. Since the lead screw 104 is connected to the lifting sleeve 105 through a threaded sleeve, and the slide rod 102 in the frame 101 guides the lifting sleeve 105, the lifting sleeve 105 descends smoothly along the direction of the lead screw 104, driving the drill rod 107 to approach the position to be drilled. When the drill rod 107 reaches the appropriate position, start the motor 106, which drives the drill rod 107 to rotate at high speed, and the coal mine drilling operation begins. During drilling, if emergency braking of drill rod 107 is required, electric push rod 205 is activated; the transmission end of electric push rod 205 extends, driving push-pull block 206 to move into fixed bracket 201; since the inner ends of push-pull block 206 and movable block 202 are both inclined and mutually adapted, the movement of push-pull block 206 will push movable block 202 to slide within fixed bracket 201; movable block 202 is fixedly connected to slider 203, thereby driving slider 203 and friction block 204 connected to slider 203 to move towards fixed bracket 201. The fixed plate 108 moves in the direction of friction until the friction block 204 is tightly attached to the fixed plate 108, using friction to quickly stop the drill rod 107 from rotating, achieving a braking effect. During the braking process, the friction between the friction block 204 and the fixed plate 108 generates a large amount of heat. At this time, the water pump 303 in the cooling assembly 3 is turned on. The liquid in the storage tank 301 is gathered near the water pump 303 under the action of the inclined block 302. The water pump 303 draws out the liquid and delivers it to the nozzle 306 through the delivery pipe 304. The nozzle 306 is located at a pair of fixed... Inside the disk 108, and adapted to the fixed disk 108, the liquid can be accurately sprayed onto the fixed disk 108 and the friction block 204 and other parts that generate heat, effectively reducing the temperature of the device and preventing the device's performance and service life from being affected by high temperature; when the drilling operation resumes, the transmission end of the electric push rod 205 retracts, driving the push-pull block 206 to move in the opposite direction, and the movable block 202, the slider 203 and the friction block 204 also reset, releasing the brake on the fixed disk 108, and the drill rod 107 can then rotate normally again to perform drilling operations.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coal mine drill brake apparatus characterised in that: Including the drill moving assembly (1), the upper part of the drill moving assembly (1) is provided with a pair of symmetrical brake assemblies (2), the outer part of the brake assembly (2) is provided with a cooling assembly (3), and the cooling assembly (3) is matched with the drill moving assembly (1); The drill moving assembly (1) comprises a frame (101), a motor (103) fixedly connected to the top end of the frame (101), a lead screw (104) fixedly connected to the transmission end of the motor (103), the bottom end of the lead screw (104) extending to the inside of the frame (101) through the top end of the frame (101), the lead screw (104) being rotatably connected with the frame (101), a lifting sleeve (105) connected to the outer wall of the lead screw (104) through a screw sleeve, a motor (106) fixedly connected to the top end of the lifting sleeve (105), a drill rod (107) fixedly connected to the top end of the motor (106), the bottom end of the drill rod (107) penetrating through the bottom end of the lifting sleeve (105) and the frame (101), the drill rod (107) being rotatably connected with the lifting sleeve (105) and the frame (101), and a pair of symmetrical fixed discs (108) fixedly connected to the middle part of the drill rod (107). The brake assembly (2) comprises a pair of symmetrical fixed supports (201) fixedly installed at the bottom end of the lifting sleeve (105), a pair of symmetrical sliding blocks (203) slidably connected to the inner end of the fixed support (201), a friction block (204) fixedly connected to one end of the sliding block (203) away from the fixed support (201), the friction block (204) being located outside the fixed disc (108), and the friction block (204) being in abutment with the fixed disc (108).

2. A coal mine drill brake device according to claim 1, characterized in that: The inside of the frame (101) is fixedly connected with a sliding rod (102), the sliding rod (102) is symmetrical with the lead screw (104), and the sliding rod (102) is slidably connected with the lifting sleeve (105).

3. The coal mine drilling rig brake device of claim 1, wherein: The inside of the fixed support (201) is slidably connected with a pair of symmetrical movable blocks (202).

4. The coal mine drilling rig brake device of claim 1, wherein: One end of the sliding block (203) away from the friction block (204) penetrates through the inner end of the fixed support (201) and is fixedly connected with the movable block (202).

5. A coal mine drill brake device according to claim 3, characterized in that: The outer end of the fixed support (201) is fixedly connected with an electric push rod (205), the transmission end of the electric push rod (205) penetrates through the outer end of the fixed support (201), extends to the inside of the fixed support (201), and is fixedly connected with a push-pull block (206), and the push-pull block (206) is slidably connected with the movable block (202).

6. A coal mine drill brake apparatus as claimed in claim 5 wherein: The inner end of the push-pull block (206) is provided in a bevel, the inner end of the movable block (202) is provided in a bevel, and the bevel of the movable block (202) is matched with the bevel of the push-pull block (206).

7. A coal mine drill brake device according to claim 1, characterized in that: The cooling assembly (3) includes a pair of symmetrical storage tanks (301) fixedly installed outside the fixed support (201), the inner bottom end of the storage tank (301) is fixedly connected with an inclined block (302), the inner side of the inclined block (302) is provided with a water pump (303), the water pump (303) is fixedly connected with the storage tank (301), the output end of the water pump (303) is fixedly connected with a conveying pipe (304), and one end of the conveying pipe (304) away from the water pump (303) penetrates the outer wall of the storage tank (301).

8. A coal mine drill brake apparatus as claimed in claim 7, characterised in that: The inner end of the storage tank (301) is fixedly connected with a fixed table (305), the inner end of the fixed table (305) is fixedly connected with a spray head (306), the spray head (306) is located inside a pair of the fixed discs (108), and the spray head (306) is matched with the fixed disc (108).

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