Electric rail sawing machine

Abstract

The utility model relates to an electric rail sawing machine which comprises a stand column, a shaft hole and a clamping part are arranged on the stand column, the clamping part is connected with a rail clamping mechanism, the rail clamping mechanism can cooperate with the clamping part to achieve the clamping function, a connecting shaft is installed in the shaft hole, one end of the connecting shaft is connected with a speed reducer, and the other end of the connecting shaft is fixedly connected with a supporting arm. The speed reducer is connected with a stepping motor, the speed reducer can receive rotating force of the stepping motor, decelerates the rotating force and then transmits the rotating force to the connecting shaft, a grinding wheel rotating mechanism is arranged on the supporting arm, and the grinding wheel rotating mechanism has a cutting function. By controlling the rotation angle and the rotation speed of the stepping motor, accurate control over the rotation movement of the supporting arm is achieved. The control drives the grinding wheel rotating mechanism on the supporting arm to conduct cutting action, the cutting function of the grinding wheel mechanism is utilized, cutting position changing and cutting rotating motion can be accurately completed, and therefore the purpose of efficiently and accurately cutting the steel rail is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail cutting devices, in particular to an electric rail sawing machine. Background Art

[0002] In the field of track maintenance, the rail sawing machine, as a key device in the process of railway maintenance, plays a crucial role. Conventional rail sawing machines generally use internal combustion engines as power sources. The internal combustion engine drives the pulley to rotate, and then drives the grinding wheel to rotate at high speed. During the operation process, workers need to manually control the operation handle to adjust the feeding speed of the grinding wheel and use the support arm to move the machine position to ensure that the grinding wheel can accurately cut the rail.

[0003] However, this conventional rail sawing machine has several significant defects:

[0004] Highly dependent on manual operation: The whole process of cutting the rail almost completely depends on the skills and experience of the operator, which not only increases the labor cost, but also may lead to instability in cutting accuracy and efficiency due to human factors.

[0005] Low working efficiency: Due to the complexity of controlling the cutting action and the requirement for proficiency, the working efficiency of the conventional rail sawing machine is significantly limited, especially in the case of large - batch rail cutting.

[0006] High consumption of human and material resources: At least two skilled workers are required to cooperate in the operation, which not only increases the labor cost, but also prolongs the operation time and is not conducive to quickly responding to the needs of railway maintenance.

[0007] Environmental pollution problem: The use of internal combustion engines will inevitably produce waste gas emissions, causing certain pollution to the environment. Content of the Utility Model

[0008] The purpose of the utility model is to provide an electric rail sawing machine, so that the electric rail sawing machine does not require manual direct cutting during the process of cutting the rail, thereby significantly improving the working efficiency and safety, and providing an efficient, safe and environment - friendly solution for the rail sawing operation.

[0009] To achieve the above - mentioned purpose, the utility model adopts the following technical solutions: An electric rail sawing machine includes a column, on which a shaft hole and a clamping part are constructed. The clamping part is connected with a rail clamping mechanism, and the rail clamping mechanism can cooperate with the clamping part to realize the clamping and releasing functions. The shaft hole is provided with a connecting shaft. One end of the connecting shaft is connected with a speed reducer, and the other end is fixedly connected with a support arm. The speed reducer is connected with a stepping motor. The speed reducer can receive the rotational force of the stepping motor, decelerate it and then transmit it to the connecting shaft. The support arm is provided with a grinding wheel rotating mechanism, and the grinding wheel rotating mechanism has a cutting function.

[0010] In some embodiments, the rail clamping mechanism includes a locking bolt which is screwed into the clamping part in a penetrating manner. The locking bolt can cooperate with the clamping part to achieve the clamping and releasing functions.

[0011] In some embodiments, the grinding wheel rotating mechanism includes a DC brushless motor, a transmission shaft, a bearing sleeve and a grinding wheel. The transmission shaft is installed in the bearing sleeve through rolling bearings. One end of the transmission shaft extends out of the bearing sleeve and is fixedly connected to the grinding wheel. The other end of the transmission shaft is connected to the output shaft of the DC brushless motor. The bearing sleeve is arranged on the support arm.

[0012] In some embodiments, the clamping part includes fixed clamping jaws and side clamping jaws respectively arranged on both sides of the bottom end of the column, and a positioning point arranged in the middle of the bottom end of the column. The rail clamping mechanism includes a locking bolt and a locking claw. The locking claw is connected to the side clamping jaw through a pin shaft. The locking bolt can be sequentially screwed into the nut on the locking claw and the nut or hole on the side clamping jaw in a penetrating manner.

[0013] In some embodiments, it further includes a storage box which is arranged behind the column. A battery is arranged in the storage box and is used to supply power to the stepping motor and the DC brushless motor.

[0014] In some embodiments, it further includes a PLC control module, a driver and a stepping motor driver. The PLC control module is electrically connected to the driver and the stepping motor driver. The driver is electrically connected to the DC brushless motor. The stepping motor driver is electrically connected to the stepping motor.

[0015] In some embodiments, it further includes a wrench which is connected to the locking bolt and is used to rotate the locking bolt.

[0016] In some embodiments, it further includes a handle which is fixedly connected to the front of the column.

[0017] In some embodiments, it further includes a grinding wheel protection shell which is fixed on the bearing sleeve and is located above the grinding wheel.

[0018] In some embodiments, it further includes an extension shaft sleeve which is fixedly sleeved on the other end of the connecting shaft. The support arm is fixedly connected to the extension shaft sleeve.

[0019] Compared with the prior art, the present utility model has the following beneficial effects:

[0020] The utility model realizes the precise control of the rotational movement of the support arm by controlling the rotation angle and rotation speed of the stepping motor. This control drives the grinding wheel rotating mechanism on the support arm to perform cutting actions. Utilizing the cutting function of the grinding wheel mechanism, it can accurately complete the transformation of the cutting position and the cutting rotational movement, thereby achieving the purpose of efficiently and precisely cutting the rail. This design not only improves the accuracy and efficiency of cutting but also ensures the stability and reliability of the cutting process.

[0021] The utility model controls the orderly movement of the stepping motor through the PLC program, enabling the support arm to achieve the expected actions and making the rail cutting actions proceed in sequence.

[0022] The rail clamping mechanism composed of locking bolts and locking jaws better adapts to the side shape of the rail, making the clamping force of the utility model on the rail better.

[0023] The battery design in the accommodation box indeed provides a stable power supply, and this design avoids many inconveniences and impacts that may be brought by external wiring cables during the operation of the electric rail saw. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the utility model and should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of two angular structures of the utility model on the rail.

[0026] Figure 2 It is a three-dimensional structure schematic diagram of the utility model on the rail.

[0027] Figure 3 It is a schematic diagram of two angular structures of the column of the utility model and the rail clamping structure connected thereto on the rail.

[0028] Figure 4 It is a schematic diagram of the structure of the speed reducer, connecting shaft, outer extension shaft sleeve, and support arm of the utility model.

[0029] Figure 5 It is a schematic diagram of the structure of the grinding wheel rotating mechanism of the utility model.

[0030] Figure 6 It is a schematic diagram of the motion state of the grinding wheel rotating mechanism of the utility model.

[0031] Figure 7 It is a schematic diagram of the PLC circuit control of the utility model.

[0032] Figure 8 This is a schematic diagram of the locking principle of the locking claw of the present utility model.

[0033] Wherein: 1. Rail clamping mechanism; 101. Wrench; 102. Locking bolt; 103. Locking claw; 2. Column; 21. Axle hole; 221. Fixed claw; 222. Side claw; 223. Positioning point; 23. Handle; 24. Accommodating box; 3. Reducer; 4. Connecting shaft; 41. Extended shaft sleeve; 5. Support arm; 6. Grinding wheel rotating mechanism; 61. DC brushless motor; 62. Transmission shaft; 63. Bearing sleeve; 64. Grinding wheel; 641. Grinding wheel protection shell; 7. Stepper motor; 8. Hole; 9. Nut; 10. Pin shaft hole. Specific embodiments

[0034] The following combines Figures 1 to 7 to elaborate on the technical solution provided by the present utility model in more detail.

[0035] Refer to Figures 1 to 4 , an embodiment of the present utility model provides an electric rail sawing machine, including a column 2, on which an axle hole 21 and a clamping part are constructed. The clamping part is connected with a rail clamping mechanism 1. The rail clamping mechanism 1 can cooperate with the clamping part to realize the clamping and releasing functions. The axle hole 21 is provided with a connecting shaft 4, which can be installed in the axle hole 21 through a bearing or directly installed in the axle hole 21. One end of the connecting shaft 4 is connected with a reducer 3, and the other end is fixedly connected with a support arm. The reducer 3 is connected with a stepper motor 7. The reducer 3 can receive the rotational force of the stepper motor 7 and transmit it to the connecting shaft 4 after deceleration. The support arm 5 is provided with a grinding wheel rotating mechanism 6, and the grinding wheel rotating mechanism 6 has a cutting function.

[0036] It should be noted that the main functions of the clamping part and the rail clamping mechanism are to cooperate to realize the clamping and releasing functions of the rail. Therefore, its specific structure is not fixed, as long as it can meet this functional requirement, it can be applied to the embodiments of the present utility model. For example, the clamping part can adopt an inverted U-shaped clamp design arranged at the lower end of the column, and this inverted U-shaped clamp serves as the entrance of the rail. At the same time, locking bolts are screwed through both sides of the inverted U-shaped clamp, and these bolts can be used as part or all of the rail clamping mechanism to jointly realize the clamping and loosening functions of the rail with the inverted U-shaped clamp.

[0037] Refer to Figure 3, in some embodiments, the clamping part includes a fixed jaw 221 and a side jaw 222 respectively arranged on both sides of the bottom end of the column, and a positioning point 223 located in the middle of the bottom end of the column. The rail clamping mechanism includes a wrench and a locking bolt, and the locking bolt can be a bolt. The locking bolt is screwed into the side jaw 222 in a penetrating manner, and the locking bolt can cooperate with the clamping part to achieve the functions of clamping or releasing. Specifically, by screwing the locking bolt in or out with a wrench, the side of the rail is clamped or loosened by the locking bolt, so as to achieve the purpose of clamping or releasing the rail.

[0038] See Figure 3 and Figure 8 , in some embodiments, the rail clamping mechanism includes a wrench 101, a locking bolt 102 and a locking jaw 103. Among them, the wrench 101 is a steel bar penetrated or welded on the locking bolt 102, and its main function is to facilitate the rotation of the locking bolt with less effort. The locking jaw 103 is connected to the side jaw 222 through a pin shaft. Specifically, the locking jaw 103 is provided with a pin hole 10, and the side jaw 222 is also provided with a pin hole, and the two are connected through a pin shaft. The locking bolt 102 can be screwed into the nut 9 on the locking jaw 103 and the nut or hole 8 on the side jaw 222 in a penetrating manner in sequence. When the locking bolt 102 is screwed into the nut 9 on the locking jaw 103 and is about to be screwed into the nut or hole 8 on the side jaw 222, due to the misalignment of the nut on the locking jaw 103 and the nut or hole 8 on the side jaw 222, under the action of the lever principle, when the locking bolt 102 is screwed into the nut or hole 8 on the locking jaw 103, the tip of the locking jaw 103 can closely adhere to the lower jaw surface of the rail head. Continue to screw in the locking bolt 102 so that it passes through the nut or hole 8 on the locking jaw 103 and presses against the side of the rail, thereby clamping the rail.

[0039] See Figure 5 , in some embodiments, the grinding wheel rotating mechanism 6 includes a DC brushless motor 61, a transmission shaft 62, a bearing sleeve 63, a grinding wheel 64 and a grinding wheel protection shell 641. The transmission shaft 62 is stably installed in the bearing sleeve 63 through a rolling bearing. One end of it extends and is fixedly connected to the grinding wheel 64, and the other end is connected to the output shaft of the DC brushless motor 61 for receiving the rotational force of the DC brushless motor. The bearing sleeve 63 is firmly fixed on the support arm 5, which can be achieved by welding, threaded connection or other means. The grinding wheel protection shell 641 is fixed on the bearing sleeve 63 and is located above the grinding wheel 64. Its main function is to prevent the sparks generated during the cutting of the rail from splashing and ensure the personal safety of the surrounding workers.

[0040] See Figures 1 to 3 , in some embodiments, it further includes a storage box 24. The storage box 24 is arranged behind the column 2, and a battery is arranged in the storage box 24. The battery is used to supply power to the stepping motor 7 and the DC brushless motor 61.

[0041] SeeFigure 7 , in some embodiments, the electric rail saw further includes a PLC control module, a driver, and a stepper motor driver. The PLC serves as the control core and is responsible for sending and / or receiving signals. Specifically, the PLC control module sends pulse and direction signals to the stepper motor driver. After receiving these signals, the stepper motor driver drives the stepper motor 7 to rotate according to the set pulses and direction, thereby achieving precise control of the rotation position and rotation speed of the support arm 5. In addition, the PLC control module also controls the power switch of the DC brushless motor 61 through the driver, and then controls the rotational movement of the grinding wheel 64, including starting, stopping, and speed adjustment. Such a design enables the electric rail saw to achieve automated and intelligent cutting operations, improving the cutting accuracy and efficiency.

[0042] See Figure 3 , in some embodiments, it further includes a handle 23, and the handle 23 is fixedly connected to the front of the column.

[0043] See Figure 4 , in some embodiments, it further includes an extended shaft sleeve 41. The extended shaft sleeve 41 is sleeved on the other end of the connecting shaft 4 and fixed by bolts or other means such as splines. The support arm 5 is fixedly connected to the extended shaft sleeve 41, specifically, the support arm 5 can be fixedly connected to the extended shaft sleeve 41 by bolts or welding.

[0044] The working process of the present utility model:

[0045] See Figure 6 , when cutting a rail, first place the rail clamping device 1 and the column 2 on the rail, and use a wrench to rotate the locking bolt to clamp the rail to fix the electric rail saw. Subsequently, the PLC control module turns on the grinding wheel rotation mechanism 6 through the driver to make it start rotating. While the grinding wheel 64 is rotating, the PLC control module controls the stepper motor 7 to slowly rotate the support arm 5 for slow feeding, so that the rotating grinding wheel 64 slowly contacts the rail and starts cutting the rail. The stepper motor 7 continues to control the support arm 5 to rotate through a set special working feed angle. After that, the PLC control module controls the stepper motor 7 to perform a specific reverse rotation slow return angle (this return angle is smaller than the previous working feed angle). Repeat the above working process until the rail is completely cut off and the work is completed. Finally, turn off the power.

[0046] Finally, it is worth noting that the design of the present utility model is flexible, and it is possible to choose whether to set up a PLC control module. If the PLC control module is set up, it is usually placed in the accommodation box 24, or installed in other parts of the electric saw rail machine according to actual needs. The setting of the PLC control module can achieve automated and intelligent control, improving the accuracy and efficiency of the cutting operation. If the PLC control module is not set up, the rotation of the stepping motor 7 and the switch of the DC brushless motor 61 need to be controlled manually. Although this increases the complexity of the operation, it can still meet the basic cutting requirements. Such a design enables the present utility model to be flexibly configured according to different usage scenarios and user needs, improving the versatility and practicality of the device.

[0047] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the protected content of the present utility model.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. An electric rail sawing machine, characterized in that, It includes a column on which a shaft hole and a clamping part are constructed. The clamping part is connected with a rail clamping mechanism which can cooperate with the clamping part to realize the clamping and releasing function. A connecting shaft is installed in the shaft hole. One end of the connecting shaft is connected to a reducer, and the other end is fixedly connected to a support arm. The reducer is connected with a stepping motor. The reducer can receive the rotational force of the stepping motor, decelerate it and then transmit it to the connecting shaft. A grinding wheel rotating mechanism is provided on the support arm, and the grinding wheel rotating mechanism has a cutting function; The grinding wheel rotating mechanism includes a DC brushless motor, a transmission shaft, a bearing sleeve and a grinding wheel. The transmission shaft is installed in the bearing sleeve through a rolling bearing. One end of the transmission shaft extends out of the bearing sleeve and is fixedly connected to the grinding wheel, and the other end of the transmission shaft is connected to the output shaft of the DC brushless motor. The bearing sleeve is arranged on the support arm; It further includes a storage box which is arranged behind the column. A battery is arranged in the storage box and is used to supply power to the stepping motor and the DC brushless motor. It also includes a PLC control module, a driver and a stepping motor driver. The PLC control module is electrically connected to the driver and the stepping motor driver. The driver is electrically connected to the DC brushless motor, and the stepping motor driver is electrically connected to the stepping motor.

2. The electric rail sawing machine according to claim 1, wherein The rail clamping mechanism includes a locking bolt which is screwed into the clamping part in a penetrating manner. The locking bolt can cooperate with the clamping part to realize the clamping and releasing function.

3. The electric rail sawing machine according to claim 1, characterized in that The clamping part includes fixed clamping claws and side clamping claws respectively arranged on both sides of the bottom end of the column, and a positioning point arranged in the middle of the bottom end of the column. The rail clamping mechanism includes a locking bolt and a locking claw. The locking claw is connected to the side clamping claw through a pin shaft. The locking bolt can be sequentially screwed into the nut on the locking claw and the nut or hole on the side clamping claw in a penetrating manner.

4. The electric rail sawing machine according to claim 3, characterized in that, It further includes a wrench which is connected to the locking bolt and is used to rotate the locking bolt.

5. The electric rail sawing machine according to claim 1, characterized in that, It further includes a handle which is fixedly connected to the front of the column.

6. The electric rail sawing machine according to claim 1, wherein, It further includes a grinding wheel protection shell which is fixed on the bearing sleeve and is located above the grinding wheel.

7. The electric rail sawing machine according to claim 1, wherein, It further includes an extension shaft sleeve which is fixedly sleeved on the other end of the connecting shaft, and the support arm is fixedly connected to the extension shaft sleeve.

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