Double-hole drilling machine for railway electric service

Abstract

The utility model discloses a double-hole drilling machine for railway electric service, which comprises a motor, and further comprises a drilling machine, a drill bit feeding mechanism and a positioning and locking mechanism, the double-hole drilling machine for railway electric service is provided with double drill bits which are arranged in parallel, the drilling work of double holes can be accurately completed at the same time, and the working efficiency is effectively improved; the telescopic positioning ruler rod with the scales is adopted to calibrate the first hole position of a drilled hole, the hole distance is guaranteed through a drilling tool designed by the drilling machine, no additional measuring tool is needed, and the burden of tool carrying is reduced; the clamping device adopts a hinge type hook hinge structure, the structure is self-locked after being tightly closed and can be quickly assembled and disassembled, emergency danger avoiding can be ensured in emergency, and the safety of a train and punching workers is ensured; a cooling system is arranged, so that the drilling tool is prevented from being deformed due to overheating, and the service life of the drilling tool is prolonged; the whole machine is provided with the moving mechanism, after drilling of the station is completed, the drilling machine is turned over, the drilling machine can be pushed to the next station along the top face of the steel rail, and labor intensity is relieved.

Description

Technical Field

[0001] This utility model relates to the field of railway rail processing, specifically to a double-hole drilling machine for railway electrical engineering. Background Technology

[0002] Currently, except for high-speed railways and passenger dedicated lines which use unlimited-length seamless welded rails, older railways with 50 or 60 rails use 12.5-meter rails per section, which are connected on-site with bolts. In addition to the bolts locking between the rail heads, the rails, as carriers of electrical control signals, require two signal cables to be connected at the joints.

[0003] Currently, single-bit drilling rigs are used for replacing rails on old railway lines. However, most on-site work is carried out at night, and the safe working time given by the dispatch center is short, generally 3-5 hours to replace 1-3 kilometers of rail. Before drilling with a single-bit drilling rig, the hole position and spacing must be accurately measured, and then the drill bit is aligned with the marked points. Using this method, the actual hole position and spacing errors are large, making it difficult to meet the accuracy requirements of railway electrical engineering. Furthermore, due to the unreasonable design of the original manufacturer's cooling system, the pipes are prone to blockage during drilling. On-site workers often use water sprayers for cooling. Each drilling rig requires at least 3 people, and each drill bit feed can only complete one hole. On-site construction requires dozens of drilling rigs to operate simultaneously, necessitating a large number of personnel. After drilling at one workstation, the rig must be moved to the next workstation (approximately 12 meters away), and the drilling rig (weighing approximately 16-20 kg) is carried manually, which is time-consuming and labor-intensive. Currently, drill bit clamping uses either side-locking with screws or 3-5 lobe elastic chucks with external nuts. Both of these clamping methods are prone to loosening due to vibration during drilling, and require specialized locking tools. The clamping of the drill rig to the rail mostly uses a screw / nut mechanism. If an emergency evacuation is needed at the construction site, dismantling the drill rig takes a considerable amount of time, currently about one minute. If rapid dismantling is not possible in an emergency, it poses a serious safety hazard.

[0004] Therefore, it is urgent to invent a double-hole drilling rig for railway electrical engineering to solve the problem of low drilling efficiency during track replacement construction, improve work efficiency, and at the same time ensure the dimensional accuracy requirements between holes. Utility Model Content

[0005] The purpose of this utility model is to provide a double-hole drilling rig for railway electrical engineering, which can solve the problem of low drilling efficiency during track replacement construction in railway electrical engineering, improve work efficiency, and at the same time ensure the dimensional accuracy requirements between holes.

[0006] The technical solution of this utility model is as follows:

[0007] This utility model relates to a double-hole drilling rig for railway electrical systems, comprising a motor, a drilling rig, a drill bit feeding mechanism, and a positioning and locking mechanism. The drilling rig includes a drill body with a support base at its upper front end. The drill body is mounted on the lower plane of the support base. Two bushings are housed within the drill body, positioned at the same horizontal level and axially. The distance between the two bushings is the same as the spacing for drilling holes in the rails. The rear ends of the bushings are connected to a transmission mechanism. A main shaft is housed inside the bushing, with a sliding sleeve mounted at its front end. A drill bit chuck is housed inside the sliding sleeve, holding a drilling tool at its front end. A [missing information - likely a device or mechanism] is located at the rear end of the drill bit chuck. Pressure Spring; The drill bit feed mechanism includes a drive shaft, which is located on the upper part of the rear end of the drill body. Two drive gears are provided on the drive shaft, and the positions of the drive gears correspond to the positions of two bushings. A rack corresponding to the number of teeth, module and pressure angle of the drive gears is provided on the upper part of the bushings. The drive gears mesh with the rack on the bushings. A push rod is fixedly installed at one end of the drive shaft. The positioning and locking mechanism is located on the support base. The positioning and locking mechanism includes a vertical plate, a movable rod, a crank arm (6) and a contact pressure block. The vertical plate extends outward along the direction of the drilling tool. The fixed end of the movable rod is rotatably installed in the middle of the extended part of the vertical plate. The fixed end of the crank arm is rotatably installed in the front end of the extended part of the vertical plate. A support block is provided in the middle of the movable rod. The two ends of the support block are movably connected to the middle of the movable rod and the middle of the crank arm. The contact pressure block is fixedly installed on the side of the support base.

[0008] Differential speed synchronization of two drill bits is achieved by stacking multiple sets of drill bit chuck tail sections. Pressure The spring can retract in time when the pressure on the drill bit is too high, relieving part of the pressure on the drill bit, buffering the vibration caused during drilling, preventing damage to the drilling machine and motor due to energy accumulation, and also preventing the drill bit from breaking and injuring people; the drill bit feed mechanism can ensure synchronous feeding of the two drill bits; the positioning and locking mechanism adopts a three-point positioning and locking structure. The contact pressure block plate locks the two drill bits on the center line of the rail height direction, and the locking force is amplified by the lever principle. It is designed with interference locking. The curved arm is pressed down to the top to lock the position near the center line of the waistline on the other side of the rail, so that the drilling machine is locked on the rail to form a stable three-point locking mechanism.

[0009] Furthermore, the motor output end is provided with a motor gear, and a sprocket is provided at the tail end of the main shaft. The motor gear drives the sprocket to rotate through the chain, thereby driving the main shaft to rotate, so that the two drilling machines and the planetary gear reduction mechanism can achieve the same speed, synchronization and same direction transmission. A motor connecting plate is provided near the motor gear, and the motor is fixedly mounted on the motor connecting plate. The tail end of the bushing passes through the motor connecting plate and is fixedly mounted on the lower part of the motor connecting plate.

[0010] Furthermore, the drill chuck is fixed inside the spindle with a pin, and a waist-shaped groove is also provided inside the spindle, allowing the drill chuck to slide within the waist-shaped groove, thus achieving synchronous feeding of the two drill bits when their axial lengths are different.

[0011] Furthermore, it also includes a cooling system, which includes a cooling water pump, a hose at the outlet of the cooling water pump, a rotary joint at the other end of the hose, a flow channel inside the spindle, and the other end of the rotary joint is divided into two outlets, which are respectively connected to the flow channels of the two spindles.

[0012] Furthermore, a water outlet hole is provided at the front end of the bushing. The flow channel leads from the tail end of the spindle to the water outlet hole, and the cooling water pump directly supplies coolant to the drilling tool to prevent the drilling tool from overheating and deforming, thereby extending the service life of the drilling tool.

[0013] Furthermore, it also includes a moving mechanism, which includes a platform and wheels. The platform is fixedly installed on the outside of the motor, and the wheels are installed on the outside of the platform.

[0014] Furthermore, the wheels are in two sets, one set is located on the upper part of the outer side of the vehicle plate, and the other set is located on the lower part of the outer side of the vehicle plate. The wheels are made of nylon. After drilling is completed, the drilling machine can be flipped over and pushed directly along the top surface of the rail to the next work station.

[0015] Furthermore, a handle is provided at the front end of the movable rod to facilitate the opening and closing of the positioning and locking mechanism by the staff.

[0016] Furthermore, a rocker arm is installed on the upper part of the upright plate to facilitate workers to pick up, place, and rotate the drilling rig.

[0017] Furthermore, all parts of the drilling rig are chrome-plated to prevent outdoor rain, dust, and sand erosion, thus extending the service life of this utility model.

[0018] Furthermore, the power supply voltage for the motor and cooling water pump does not exceed 36V.

[0019] Furthermore, a retractable measuring and positioning scale is also provided on the support base. A retractable positioning scale rod with scale is used to mark the first hole position. The hole distance is guaranteed by the drill bit designed by the drilling machine itself, without the need for additional measuring tools.

[0020] Furthermore, a rubber pressing block is provided at the end of the curved arm that contacts the rail to buffer the pressure between the rail and the curved arm and prevent the rail or curved arm from deforming under pressure.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0022] 1. This utility model of a railway electrical double-hole drilling machine is equipped with two parallel drill bits, which can simultaneously and accurately complete the drilling of two holes, effectively improving work efficiency.

[0023] 2. This utility model uses a telescopic positioning ruler with scale to mark the first hole position. The hole spacing is guaranteed by the drill bit designed by the drilling machine itself, eliminating the need for additional measuring tools and reducing the burden of tool handling.

[0024] 3. This utility model adopts a hinge-type hook structure. This structure is self-locking after being closed, and can be quickly installed and disassembled. In case of emergency, it can ensure emergency avoidance and ensure the safety of trains and drilling personnel.

[0025] 4. This utility model is equipped with a cooling system to prevent the drilling tool from overheating and deforming, thereby extending the service life of the drilling tool.

[0026] 5. This utility model is equipped with a moving mechanism. After drilling is completed at this workstation, the drilling machine is flipped over and can be pushed along the top surface of the rail to the next workstation, reducing labor intensity. Attached Figure Description

[0027] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0028] Figure 1 This is a structural schematic diagram of the double-hole drilling rig for railway electrical engineering of this utility model.

[0029] Figure 2 This is a schematic diagram of the movable mechanism installed and locked onto the rail.

[0030] Reference numerals: 1-Motor, 1a-Motor gear, 2-Push rod, 3-Drive shaft, 3a-Drive gear, 4-Rocker arm, 5-Moving rod, 5a-Support block, 5b-Handle, 6-Crank arm, 6a-Pressing block, 7-Sliding sleeve, 8-Drilling tool, 9-Contact pressure block, 10-Support base, 10a-Upright plate, 11-Drill body, 12-Shaft sleeve, 12a-Rack, 13-Sprocket, 14-Chain, 15-Motor connecting plate, 16-Car plate, 17-Wheel, 18-Rail. Detailed Implementation

[0031] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0032] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0033] This utility model relates to a double-hole drilling rig for railway electrical systems, comprising a motor 1, a drilling rig, a drill bit feeding mechanism, and a positioning and locking mechanism. The drilling rig includes a drill body 11, with a support base 10 mounted on the upper part of the front end of the drill body 11. The drill body 11 is mounted on the lower plane of the support base 10. Two bushings 12 are installed inside the drill body 11, at the same horizontal height and axial position. The distance between the two bushings 12 is the same as the spacing for drilling holes in the rails 18. The rear end of each bushing 12 is connected to a transmission mechanism. A main shaft is installed inside each bushing 12, with a sliding sleeve 7 mounted on its front end. A drill bit chuck is installed inside the sliding sleeve 7, holding a drilling tool 8 at its front end. A compression spring is installed at the rear end of the drill bit chuck. The drill bit feeding mechanism includes a drive shaft 3, located on the upper part of the rear end of the drill body 11, with two drive teeth on the drive shaft 3. The position of the gear 3a and the transmission gear 3a corresponds to the positions of the two bushings 12. A rack 12a corresponding to the number of teeth, module and pressure angle of the transmission gear 3a is provided on the upper part of the bushing 12. The transmission gear 3a meshes with the rack 12a on the bushing 12. A push rod 2 is fixedly installed at one end of the transmission shaft 3. The positioning and locking mechanism is provided on the support base 10. The positioning and locking mechanism includes a vertical plate 10a, a movable rod 5, a crank arm 6 and a contact pressure block 9. The vertical plate 10a extends outward along the direction of the drilling tool 8. The fixed end of the movable rod 5 is rotatably installed in the middle of the extended part of the vertical plate 10a. The fixed end of the crank arm 6 is rotatably installed in the front end of the extended part of the vertical plate 10a. A support block 5a is provided in the middle of the movable rod 5. The two ends of the support block 5a are movably connected to the middle of the movable rod 5 and the middle of the crank arm 6. The contact pressure block 9 is fixedly installed on the side of the support base 10.

[0034] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0035] like Figure 1 — Figure 2 As shown, the differential speed synchronization of the two drill bits adopts multiple sets of compression springs superimposed at the tail of the drill bit chuck. This allows the drill bit to retract in time when the pressure on it is too high, relieving some of the pressure on the drill bit, buffering the vibration caused during drilling, preventing damage to the drilling machine and motor 1 due to energy accumulation, and also preventing the drill bit 8 from breaking and injuring people. At the same time, it can also ensure the synchronous feed of the drill bits when the drill bit 8 is of different lengths. The drill bit feed mechanism can ensure that the two spindles feed synchronously and at the same speed.

[0036] The positioning and locking mechanism adopts a three-point positioning and locking structure. The contact pressure block 9 locks the two drill bits on the center line of the height direction of the rail 18, and the locking force is amplified by the lever principle. It is designed with interference locking. The crank arm 6 is pressed down to the top and locked to the position near the center line of the waistline on the other side of the rail 18, so that the drill is locked on the rail 18 to form a stable three-point locking mechanism. When the drilling work is completed, the handle 5b is lifted upward to lift the movable rod 5, which drives the crank arm 6 to loosen from the rail 18, and the drill can be removed from the rail.

[0037] The cooling system uses an internal through-hole in the drill spindle, with an external water pump supplying water to the drill shank hole. As the drill bit rotates, the cooling water pump operates simultaneously, spraying cooling water onto the drill bit for forced cooling.

[0038] After drilling is completed at this station, the drilling rig is flipped over and can be pushed to the next station along the top surface of the rail 18 via the moving mechanism. A nylon wheel is also installed at the bottom of the coolant tank, which can be pushed to the next station along with the drilling rig.

[0039] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A double-hole drilling rig for railway electrical engineering, comprising a motor (1) and a transmission mechanism, characterized in that, It also includes a drilling rig, a drill bit feeding mechanism, and a positioning and locking mechanism. The drilling rig includes a drill body (11), and a support base (10) is provided on the upper part of the front end of the drill body (11). The drill body (11) is installed on the lower surface of the support base (10). Two bushings (12) are provided inside the drill body (11). The two bushings (12) are located at the same horizontal height and in the same axial position. The distance between the two bushings (12) is the same as the spacing of the holes drilled in the rail (18). The rear end of the drill body (11) is connected to the transmission mechanism. The main shaft is installed inside the bushing (12). The front end of the main shaft is equipped with a sliding sleeve (7). The drill chuck is installed inside the sliding sleeve (7). The front end of the drill chuck holds the drilling tool (8). A compression spring is installed at the rear end of the drill chuck. The drill feed mechanism includes a transmission shaft (3). The transmission shaft (3) is located on the upper part of the rear end of the drill body (11). Two transmission gears (3a) are installed on the transmission shaft (3). The position of the transmission gears (3a) is related to the two transmission gears (3a and 3a). The bushing (12) is positioned accordingly. A rack (12a) is provided on the upper part of the bushing (12) to correspond to the number of teeth, module and pressure angle of the transmission gear (3a). The transmission gear (3a) meshes with the rack (12a) on the bushing (12). A push rod (2) is fixedly installed at one end of the transmission shaft (3). The positioning and locking mechanism is set on the support base (10). The positioning and locking mechanism includes a vertical plate (10a), a movable rod (5), a crank arm (6) and a contact pressure block (9). The vertical plate (10a) 10a) Extend outward along the direction of the drilling tool (8), the fixed end of the movable rod (5) is rotatably installed in the middle of the extended part of the vertical plate (10a), the fixed end of the curved arm (6) is rotatably installed in the front end of the extended part of the vertical plate (10a), a support block (5a) is provided in the middle of the movable rod (5), the two ends of the support block (5a) are movably connected to the middle of the movable rod (5) and the middle of the curved arm (6), and the contact pressure block (9) is fixedly installed on the side of the support base (10).

2. The railway signaling double-hole drilling rig according to claim 1, characterized in that, The motor (1) is provided with a motor gear (1a) at the output end and a sprocket (13) at the tail end of the main shaft. The motor gear (1a) drives the sprocket (13) to rotate through the chain (14), thereby driving the main shaft to rotate. A motor connecting plate (15) is provided near the motor gear (1a) of the motor (1). The motor (1) is fixedly mounted on the motor connecting plate (15). The tail end of the bushing (12) passes through the motor connecting plate (15) and is fixedly mounted on the lower part of the motor connecting plate (15).

3. The railway signaling double-hole drilling rig according to claim 1, characterized in that, The drill chuck is fixed inside the spindle by a pin, and a slot is also provided inside the spindle, in which the drill chuck can slide.

4. The railway signaling double-hole drilling rig according to claim 1, characterized in that, It also includes a cooling system, which includes a cooling water pump. The outlet section of the cooling water pump is provided with a hose, and the other end of the hose is connected to a rotary joint. A flow channel is provided inside the spindle. The other end of the rotary joint is divided into two outlets, which are respectively connected to the flow channels of the two spindles. A water outlet hole is provided at the front end of the bushing (12). The flow channel leads from the tail end of the spindle to the water outlet hole.

5. The railway signaling double-hole drilling rig according to claim 1, characterized in that, It also includes a moving mechanism, which includes a platform (16) and wheels (17). The platform (16) is fixedly installed on the outside of the motor (1). Wheels (17) are installed on the outside of the platform (16). There are two sets of wheels (17), one set is located on the upper part of the outside of the platform (16), and the other set is located on the lower part of the outside of the platform (16).

6. The railway signaling double-hole drilling rig according to claim 1, characterized in that, A handle (5b) is provided at the front end of the movable lever (5).

7. The railway signaling double-hole drilling rig according to claim 1, characterized in that, A rubber pressing block (6a) is provided at the end of the curved arm (6) that contacts the rail.

8. The railway signaling double-hole drilling rig according to claim 1, characterized in that, A rocker arm (4) is provided on the upper part of the upright plate (10a).

9. The railway signaling double-hole drilling rig according to claim 1, characterized in that, Contact pressure block (9).

10. The railway signaling double-hole drilling rig according to claim 1, characterized in that, A retractable measuring and positioning scale is also provided on the support base (10).

Images