A lithium battery rail drill

Abstract

This utility model discloses a lithium-ion battery-powered rail drilling machine, belonging to the technical field of rail maintenance equipment. The drilling machine includes a frame, a clamping support assembly, a drive motor fixed to the frame, a power battery pack, a drill bit, a transmission mechanism, and a feed adjustment unit. The drive motor drives the drill bit to rotate through the transmission mechanism; the transmission mechanism includes a transmission shaft rotatably connected to the frame and a transmission sleeve sleeved on the transmission shaft; the feed adjustment unit includes an adjusting rack connected to the transmission sleeve, an adjusting gear meshing with the rack, and an adjusting handle. Operating the handle can drive the drill bit to feed axially or retract. The clamping support assembly includes a support frame, a clamping plate with a slot, a connecting plate, a clamping arm, a locking arm connected to the clamping arm via a thread, and a locking seat rotatably connected to the support frame. Rotating the locking arm allows the clamping arm to engage with the clamping plate to clamp the rail. This utility model uses a lithium battery for power, has a compact structure, and is highly portable; the gear and rack feed is smooth and controllable; the linkage threaded clamping mechanism is easy to operate and provides reliable and stable clamping. It is suitable for rail drilling operations in the field and complex environments.

Description

Technical Field

[0001] This invention belongs to the field of rail construction equipment, specifically involving a lithium-ion battery-powered rail drilling machine. Background Technology

[0002] Rail drilling is an important process in railway construction and maintenance. Currently, the commonly used rail drilling equipment mainly includes the following types: wired power supply drilling machines, hydraulic drive drilling machines, and portable handheld drilling machines.

[0003] However, existing rail drilling equipment has many shortcomings: wired power supply drilling machines are limited by the length of the power cord and are inconvenient to use in field construction scenarios; hydraulically driven drilling machines have high power, but the whole system is large and heavy, making them inconvenient to carry; portable handheld drilling machines are easy to carry, but due to the lack of a stable clamping support mechanism, the positioning is inaccurate during use, and the drilling quality is difficult to guarantee.

[0004] In addition, the clamping mechanism of existing rail drilling equipment is not reasonably designed, is cumbersome to operate, and is not firmly clamped, making it easy for displacement to occur during drilling; the drilling feed adjustment is not precise enough, affecting drilling efficiency and quality; the cooling system design is imperfect, resulting in easy wear and short life of the drill bit; some equipment is not equipped with batteries and needs to rely on external power, which limits the application scenarios and portability of the equipment.

[0005] Therefore, there is an urgent need for a lithium-ion battery rail drilling machine that is simple in structure, easy to operate, accurate in positioning, and highly reliable, in order to meet the actual needs of railway construction and maintenance. Utility Model Content

[0006] The purpose of this utility model is to provide a lithium-ion battery-powered rail drilling machine, which aims to solve the technical problems of existing rail drilling equipment in terms of portability, ease of operation, positioning accuracy, and drilling efficiency.

[0007] To achieve the above objectives, this utility model provides a lithium-ion battery rail drilling machine, comprising: a frame and a clamping support assembly; and a drive motor fixed on the frame and a power battery pack for providing power to the drive motor; the output end of the drive motor drives the drill bit to drill holes through a transmission mechanism; during drilling, the clamping support assembly clamps the rail.

[0008] The transmission mechanism includes:

[0009] The drive shaft is rotatably connected to the frame; one end meshes with the output end of the drive motor via a gear, and the other end is connected to the drill bit.

[0010] A transmission sleeve, fitted onto the transmission shaft, is rotatably connected to the transmission shaft;

[0011] The transmission sleeve is axially limited by a limiting clamp;

[0012] The feed adjustment unit includes:

[0013] An adjusting rack is fixedly connected to the transmission sleeve and arranged axially parallel to the transmission shaft; an adjusting gear meshes with the adjusting rack; and an adjusting handle is fixedly connected to the adjusting gear; the adjusting handle is rotatably connected to the frame.

[0014] In some optional embodiments of this utility model, a water jacket fixed on the transmission mechanism is also included. The water jacket is provided with an inlet pipe for connecting cooling water and a spray nozzle for spraying cooling water toward the part to be drilled.

[0015] In some optional embodiments of this utility model, the clamping support assembly includes:

[0016] Support frame, connected to the machine frame;

[0017] A clamping plate is connected to the support frame, and the clamping plate is provided with a clamping groove adapted to the side wall of the rail; a clamping plate is provided on both sides of the drill bit;

[0018] The connecting plate is fixed in the middle of the support frame;

[0019] The clamping arm is rotatably connected to the end of the connecting plate in the middle; one end is equipped with a rotating shaft.

[0020] A locking arm, one end of which is threaded to a rotating shaft and passes through the rotating shaft, is rotatably connected to a locking seat;

[0021] The lock seat is rotatably connected to the support frame at one end.

[0022] Preferably, the support frame is provided with a connecting arm; one end of the connecting arm is rotatably connected to the upper part of the support frame, and the other end is rotatably connected to the lock seat.

[0023] More preferably, the connecting arm is provided with an integrally formed limiting baffle; the limiting baffle is located below the lock seat and extends from the connection between the connecting arm and the lock seat towards the locking arm.

[0024] Preferably, one end of the locking arm is provided with a handle, and the other end is rotatably connected to the lock seat.

[0025] The lithium-ion battery rail drilling machine provided by this utility model has the following beneficial effects:

[0026] 1. Powered by lithium batteries, it requires no external power source, making it convenient for use in field construction environments and improving the portability and operational flexibility of the equipment;

[0027] 2. A high-efficiency transmission mechanism and a precise feed adjustment unit are designed. The drill bit's precise feed control can be achieved by adjusting the handle, thereby improving drilling quality and efficiency.

[0028] 3. The clamping support assembly is reasonably designed. Through the cooperation of the locking arm and the clamping arm, the drilling machine can be quickly and firmly fixed on the rail to achieve precise positioning.

[0029] 4. The water jacket cooling system can effectively cool the drill bit, extend its service life, improve drilling efficiency, and reduce chip adhesion;

[0030] 5. The overall structure is simple and reasonable, and the operation is convenient. Drilling can be completed by a single person, which improves work efficiency.

[0031] 6. The design of the connecting plate and lock seat ensures that the locking mechanism has sufficient freedom, making the operation more flexible and the positioning more accurate. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the disclosed embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below. These drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0033] Figure 1 This is a three-dimensional structural schematic diagram of the lithium-ion battery rail drilling machine of this utility model;

[0034] Figure 2 This is a front view schematic diagram of the lithium battery rail drilling machine of this utility model;

[0035] Figure 3 This is a three-dimensional structural diagram of the transmission mechanism of this utility model;

[0036] Figure 4 This is a three-dimensional structural diagram of the clamping support assembly of this utility model. Detailed Implementation

[0037] The technical solution (including preferred technical solution) of this utility model will be further described in detail below with reference to the accompanying drawings and by listing some optional embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. 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.

[0038] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Example 1

[0041] like Figure 1 and Figure 2 As shown, the present invention provides a lithium-ion battery rail drilling machine, comprising a frame 1 and a clamping support assembly 2; and a drive motor 3 fixed on the frame 1 and a power battery pack 4 for providing power to the drive motor 3. The output end of the drive motor 3 drives the drill bit 5 to drill through a transmission mechanism 6; during drilling, the clamping support assembly 2 clamps the rail.

[0042] The frame 1 is the main frame of the drilling machine, made of high-strength aluminum alloy, which is lightweight and high-strength, making it easy for operators to carry. The frame 1 has mounting positions for the drive motor 3, the power battery pack 4, and the transmission mechanism 6.

[0043] The drive motor 3 is a high-efficiency permanent magnet brushless motor with a rated power of no less than 1500W and a maximum speed of 13800rpm, which can meet the power requirements of rail drilling. The drive motor 3 is firmly mounted on the frame 1 with fixing bolts, and the motor shaft is equipped with gears that mesh with the transmission mechanism 6.

[0044] The power battery pack 4 uses high-energy-density lithium-ion batteries with a rated voltage of 36V and a capacity of 10Ah, which can support continuous operation for approximately 4 hours, meeting the needs of general field construction. The power battery pack 4 features a quick-release design for easy replacement and charging. A power indicator light is provided on the battery pack, allowing operators to easily monitor the remaining battery power.

[0045] like Figure 3As shown, the transmission mechanism 6 includes a transmission shaft 61, a transmission sleeve 62, and a limiting clamp 63. One end (e.g., the rear end) of the transmission shaft 61 meshes with the output shaft of the drive motor 3 via a gear set consisting of one or more gears, while the other end (e.g., the front end) has an interface for mounting the drill bit 5, such as a Morse taper hole, a drill chuck, or other specialized interface. The axial direction of the transmission shaft 61 is the drilling direction. The transmission shaft 61 is rotatably connected to the frame 1 via bearings, ensuring that the transmission shaft 61 can rotate smoothly and efficiently. The transmission shaft 61 is made of 45# steel, which has been heat-treated for strengthening, and has good strength and wear resistance.

[0046] The transmission sleeve 62 is fitted on the transmission shaft 61 and is rotatably connected to the transmission shaft 61 through a needle roller thrust ball bearing; the limiting clamp 63 is installed on the transmission shaft 61 to ensure the axial limiting of the transmission sleeve 62 and the rotating shaft 61.

[0047] The rear end of the drive shaft 61 is connected to the gear set via a large spline. In this way, when the drive shaft 61 moves axially, it can not only play a guiding role, but also effectively transfer the power of the drive motor 3.

[0048] The transmission mechanism 6 also includes a feed adjustment section, which comprises an adjusting rack 64, an adjusting gear 65, and an adjusting handle 66. The adjusting rack 64 is fixedly connected to the transmission sleeve 62 and is arranged axially parallel to the transmission shaft 61. The adjusting gear 65 meshes with the adjusting rack 64 and is fixedly connected to the adjusting handle 66. The adjusting handle 66 is rotatably connected to the frame 1.

[0049] By rotating the adjusting handle 66, the adjusting gear 65 is driven to rotate. Since the adjusting gear 65 meshes with the adjusting rack 64, it can drive the adjusting rack 64 and the transmission sleeve 62 connected to it to move the rotating shaft 61 axially along the transmission shaft 61, thereby realizing the feed or retraction operation of the drill bit 5. The adjusting handle 66 is equipped with a scale, which makes it easy for the operator to control the feed amount and ensure drilling accuracy.

[0050] Example 2

[0051] like Figure 1 and Figure 3 As shown, this embodiment further provides a water jacket cooling system based on embodiment 1. Specifically, a water jacket 7 is additionally installed at the front end of the transmission mechanism 6 (for example, fixed on the front end of the transmission slide sleeve 62, or fixed on the frame 1 near the working area of ​​the drill bit 5). The water jacket 7 is provided with a water inlet pipe 71 for connecting cooling water, and a water spray nozzle 72 for spraying cooling water to the part to be drilled.

[0052] The water jacket 7 is made of aluminum alloy, making it lightweight and providing excellent heat dissipation. The water jacket 7 is bolted to the transmission slide sleeve 62 and moves with it. The water jacket 7 has internal water channels that connect to the water inlet pipe 71 and the spray nozzle 72. The water inlet pipe 71 is a pressure-resistant flexible hose or rigid pipe, one end of which can be connected to an external water source or a portable water tank.

[0053] The water nozzle 72 is located at the front end of the water jacket 7, facing the contact point between the drill bit 5 and the rail. It can spray cooling water directly onto the drilling area, effectively cooling the drill bit 5 and the drilling part, reducing the temperature of the drill bit 5, extending the service life of the drill bit 5, and at the same time flushing away the chips generated during drilling, keeping the drilling area clean.

[0054] The spray nozzle 72 features an adjustable design, allowing operators to adjust the spray angle and water volume as needed to achieve optimal cooling. The water jacket 7 is also equipped with a filter to prevent impurities from clogging the spray nozzle 72.

[0055] Example 3

[0056] like Figure 2 and Figure 4 As shown in the figure, this embodiment describes the structure of the clamping support assembly 2 in detail. The clamping support assembly 2 includes a support frame 21, two clamping plates 22, a connecting plate 23, a clamping arm 24, a locking arm 25, and a locking seat 26.

[0057] The support frame 21 is bolted to the frame 1. The support frame 21 is made of high-strength aluminum alloy to ensure that the entire clamping support assembly 2 has sufficient strength and stability. The support frame 21 has a frame-type structure, which is lightweight, high-strength, and easy to install and disassemble.

[0058] Two clamping plates 19 are bolted to the lower sides of the support frame 21, located on either side of the drilling position. Each clamping plate 22 has a groove 221 machined on it to match the shape of a specific part of the rail sidewall (such as the arc transition area at the lower edge of the rail head or the rail web). These grooves 20 are used to fit tightly against the rail R during clamping, providing stable positioning and support.

[0059] The clamping plate 22 is made of high-strength alloy steel and has undergone surface hardening treatment, giving it excellent wear resistance and deformation resistance. The shape of the clamping slot 221 is designed to match the side wall shape of the standard steel rail, ensuring a tight fit.

[0060] In some embodiments of this utility model, the two ends of the card plate 22 have different sizes, thus adapting to different types of steel rails.

[0061] The connecting plate 23 is fixed to the upper middle part of the support frame 21, located between the two clamping plates 22. The middle part of the clamping arm 24 (or a fulcrum position selected according to design needs) is rotatably connected to the end of the connecting plate 23. The clamping arm 24 is designed with an arc shape to form good contact with the bottom of the rail, improving the clamping effect. Its lower end is designed to effectively abut against the side wall of the rail (usually the lower jaw of the rail head or the rail web on the side opposite to the clamping plate 22). The upper end of the clamping arm 24 is provided with a rotating shaft 241 as the point of force application, which has an internal thread.

[0062] The locking arm 25 is a long rod with an internally threaded hole. One end (e.g., the rear end) is threadedly engaged with the rotating shaft 241 at the upper end of the clamping arm 24. After passing through the rotating shaft 241, the other end (e.g., the front end) of the locking arm 25 is rotatably connected to the upper end of the lock seat 26. The locking arm 25 is made of a high-strength threaded rod and has a galvanized surface to prevent corrosion. One end of the locking arm 25 is provided with a handle 251 for easy rotation by the operator.

[0063] One end of the lock seat 26 is rotatably connected to the support frame 21. The lock seat 26 is made of cast steel, making it sturdy and durable. A rolling bearing is provided at the connection between the lock seat 26 and the locking arm 25 to reduce friction and improve operational flexibility.

[0064] In some embodiments of this utility model, the top of the support frame 21 is also provided with a handle 29, which makes it convenient to hold the drilling machine during operation.

[0065] Example 4

[0066] Based on Example 3, this example further optimizes the clamping support assembly 2. For example... Figure 2 and Figure 4 As shown, the support frame 21 is provided with a connecting arm 27; one end of the connecting arm 27 is rotatably connected to the upper part of the support frame 21, and the other end is rotatably connected to the lock seat 26.

[0067] The connecting arm 27 is made of 45# steel with a rust-proof surface treatment. The design of the connecting arm 27 increases the stability of the locking mechanism, making the locking arm 25 rotate more smoothly and achieving a better locking effect. Rolling bearings are used at the connections between the connecting arm 27, the support frame 21, and the lock seat 26 to reduce friction and improve operational flexibility.

[0068] Furthermore, the connecting arm 27 is provided with an integrally formed limiting baffle 28; the limiting baffle 28 is located below the lock seat 26 and extends from the connection between the connecting arm 27 and the lock seat 26 toward the locking arm 25. The function of the limiting baffle 28 is to prevent the lock seat 26 from rotating excessively downward, ensuring the normal operation of the locking mechanism. The limiting baffle 28 has a thickness of 5mm, and its length is designed according to actual needs to ensure that it can effectively perform its limiting function.

[0069] Meanwhile, one end of the locking arm 25 is equipped with a handle 251, and the other end is rotatably connected to the lock seat 26. The handle 251 is covered with rubber material, providing a comfortable grip and anti-slip effect, making it easy for the operator to rotate the locking arm 25 forcefully. The rotatable connection between the locking arm 25 and the lock seat 26 uses a rolling bearing to reduce friction and improve operational flexibility.

[0070] This optimized design gives the clamping support assembly 2 better stability and ease of operation, enabling it to more firmly fix the drilling machine to the rail and improve the accuracy and quality of drilling.

[0071] In use, first align the clamping plate 22 of the lithium-ion rail drilling machine with the side wall of the rail, so that the clamping groove 221 engages with the side wall of the rail. Then, rotate the handle 251 on the locking arm 25, so that the locking arm 25 rotates in the thread direction, causing the lower part of the clamping arm 24 to rotate around the connection between the clamping arm 24 and the connecting plate 23, thereby cooperating with the clamping plate 22 to clamp the rail.

[0072] Once the rail is securely clamped, the drive motor 3 is started, and the drive motor 3 drives the drill bit 5 to rotate via the transmission mechanism 6. Then, the operator pushes the adjusting handle 66 to rotate the adjusting gear 65, which in turn moves the adjusting rack 64, the transmission sleeve 62, and the transmission shaft 61, thereby controlling the drill bit 5 to feed towards the rail and begin drilling.

[0073] If a water cooling system is used, before starting drilling, connect the water inlet pipe 71 to the water source, open the water valve, and spray cooling water through the spray nozzle 72 onto the drilling area to cool the drill bit 5 and the drilling area.

[0074] After drilling is completed, the operator reverses the adjustment handle 66 to retract the drill bit 5. Then, the operator reverses the handle 251 on the locking arm 25 to release the clamping mechanism and remove the drilling machine from the rail.

[0075] Throughout the operation, the design of the connecting plate 23 and the lock seat 26 ensures that the locking mechanism has sufficient freedom, allowing the locking arm 25 to extend and retract more freely and operate more conveniently, while also ensuring that the rail positioning is more accurate.

[0076] It should be understood that this utility model is not limited to the specific structure disclosed in the above embodiments. Those skilled in the art, inspired by the technical solution of this utility model, can make various equivalent modifications or substitutions, such as changing the specific form of the gear set, adopting other types of feeding mechanisms (such as a lead screw and nut mechanism), adjusting the specific linkage arrangement or driving method of the clamping assembly, selecting different types and capacities of batteries and motors, etc. As long as these modifications or substitutions do not depart from the spirit and scope of the technical solution of this utility model, they should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A lithium-ion battery rail drilling machine, characterized in that, include: A frame and clamping support assembly; and a drive motor fixed to the frame and a power battery pack for providing power to the drive motor; The output end of the drive motor drives the drill bit to drill a hole through a transmission mechanism; During drilling, the clamping support assembly clamps the rail; The transmission mechanism includes: The drive shaft is rotatably connected to the frame; one end meshes with the output end of the drive motor via a gear, and the other end is connected to the drill bit. A transmission sleeve, fitted onto the transmission shaft, is rotatably connected to the transmission shaft; The transmission sleeve is axially limited by a limiting clamp; The feed adjustment unit includes: An adjusting rack is fixedly connected to the transmission sleeve and arranged axially parallel to the transmission shaft; an adjusting gear meshes with the adjusting rack; and an adjusting handle is fixedly connected to the adjusting gear; the adjusting handle is rotatably connected to the frame.

2. The lithium-ion battery rail drilling machine according to claim 1, characterized in that: It also includes a water jacket fixed to the transmission mechanism, the water jacket being provided with an inlet pipe for connecting cooling water and a nozzle for spraying cooling water toward the part to be drilled.

3. The lithium-ion battery rail drilling machine according to claim 1, characterized in that: The clamping support assembly includes: Support frame, connected to the machine frame; A clamping plate is connected to the support frame, and the clamping plate is provided with a clamping groove adapted to the side wall of the rail; a clamping plate is provided on both sides of the drill bit; The connecting plate is fixed in the middle of the support frame; The clamping arm is rotatably connected to the end of the connecting plate in the middle; one end is equipped with a rotating shaft. A locking arm, one end of which is threaded to a rotating shaft and passes through the rotating shaft, is rotatably connected to a locking seat; The lock seat is rotatably connected to the support frame at one end.

4. The lithium-ion battery rail drilling machine according to claim 3, characterized in that: The support frame is provided with a connecting arm; one end of the connecting arm is rotatably connected to the upper part of the support frame, and the other end is rotatably connected to the lock seat.

5. The lithium-ion battery rail drilling machine according to claim 4, characterized in that: The connecting arm is provided with an integrally formed limiting baffle; the limiting baffle is located below the lock seat and extends from the connection between the connecting arm and the lock seat towards the locking arm.

6. The lithium-ion battery rail drilling machine according to claim 3, characterized in that: The locking arm has a handle at one end and is rotatably connected to the lock seat at the other end.

7. The lithium-ion battery rail drilling machine according to claim 3, characterized in that: The support frame is also equipped with a handle at the top.

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