Electric variable frequency speed-regulating turning gear

Abstract

The utility model discloses a kind of electric frequency conversion speed-regulating turning gear, comprising: support frame;Rotary shaft, horizontally set on the side wall of support frame;Transmission mechanism, set on support frame, its power output part is connected with rotary shaft, for driving rotary shaft rotation;Fixing mechanism, set on support frame, for connecting support frame with diesel engine;Turning key, set in rotary shaft front end, for connecting with the gear shaft of turning mechanism.

Description

Technical Field

[0001] This utility model relates to the field of turning gear devices, and in particular to an electric variable frequency speed control turning gear device. Background Technology

[0002] In various maintenance procedures for diesel locomotives, "turning the crankshaft" is a crucial operation for inspecting and measuring the diesel engine crankshaft and connecting rods, as well as overhauling other locomotive components such as the main generator. During locomotive maintenance, the diesel engine crankshaft must be turned to a specific angle and position before maintenance can begin. A single locomotive undergoing intermediate maintenance requires 2-3 people to perform multiple turning operations using a crankshaft lever to complete the work. Current cranking fixtures make it difficult for operators to apply force during turning, increasing the risk of the cranking screw slipping and causing injuries such as crushing and impact injuries to workers, resulting in a low operational safety factor.

[0003] Current technology requires operators to connect a ratchet wrench to the turning screw to drive the gear shaft of the diesel locomotive's turning mechanism to rotate, thereby rotating other components to the appropriate angle. Because the turning mechanism of an internal combustion locomotive has a high gear ratio, the crankshaft assembly bears a load of nearly 2 tons during turning. Manual operation is time-consuming and labor-intensive, requiring multiple people to work in shifts. Furthermore, inaccurate turning positions are prone to occur during the turning process, necessitating repeated adjustments and resulting in low work efficiency. Therefore, we propose an electrically operated variable frequency speed-regulating turning device to solve the aforementioned problems. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an electric variable frequency speed control turning device.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An electric variable frequency speed control turning gear device, comprising:

[0007] Support frame;

[0008] The rotating shaft is horizontally mounted on the side wall of the support frame;

[0009] The transmission mechanism is mounted on the support frame, and its power output part is connected to the rotating shaft to drive the rotating shaft to rotate.

[0010] A fixing mechanism, mounted on the support frame, is used to connect the support frame to the diesel engine;

[0011] The turning key is located at the front end of the rotating shaft and is used to connect with the gear shaft of the turning mechanism.

[0012] The transmission mechanism includes:

[0013] The motor is mounted on the support frame;

[0014] The first transmission wheel is mounted on the drive shaft of the motor.

[0015] The second transmission wheel is located above the first transmission wheel, is connected to the rotating shaft, and is connected to the first transmission wheel via a belt.

[0016] The second transmission wheel and the first transmission wheel are provided with outer shells; the motor is provided with a protective shell, and the protective shell is provided with heat dissipation holes.

[0017] The front end of the rotating shaft is provided with a slot, a movable plate is provided in the slot, and a screw hole is provided on the movable plate. The front end of the movable plate is connected to the turning key, and the rear end of the turning key is provided with an internal screw hole. The internal screw hole and the screw hole are interconnected. The tail end of the horizontally set adjusting screw passes through the opening on the outer shell and the axial hole on the second transmission wheel and the rotating shaft in sequence, and is then installed on the screw hole and the internal screw hole. The head of the adjusting screw is provided with a knob.

[0018] The fixing mechanism includes:

[0019] A connecting plate is mounted on a support frame and has strip-shaped mounting holes.

[0020] The horizontally placed fixing screw has one end fixed to the mounting hole by the first and second fastening bolts, and the other end is fitted with the first and second fastening side plates. The outer side of the second fastening side plate is provided with an outer nut, which is fitted onto the fixing screw.

[0021] The support frame is equipped with a handle at the top.

[0022] The beneficial effects of this utility model are:

[0023] 1. This utility model incorporates a motor. The motor's start drives the drive shaft to rotate. This rotation, via a second transmission wheel, belt, and first transmission wheel, drives the rotating shaft to rotate. The rotating shaft then drives the rear-end turning key to rotate the gear shaft of the diesel engine turning mechanism. A knob allows the operator to rotate, which in turn rotates an adjusting screw. This screw moves a movable plate back and forth, allowing for fine-tuning of the turning key's distance. The belt drive connects the drive shaft and rotating shaft, preventing damage to the equipment and locomotive components in case of diesel engine jamming during turning, thus enhancing equipment stability. Furthermore, the knob and adjusting screw facilitate the adjustment of the turning key's distance, making it easy to install on the gear shaft of the turning mechanism.

[0024] 2. This utility model provides a connecting plate with mounting holes. Workers can fix the connecting plate to one side of the pre-drilled hole in the diesel engine using fixing screws, a first fastening bolt, and a second fastening bolt. The fixing screws are used to adjust and fix the turning gear, allowing the turning gear to connect with the turning mechanism of the diesel engine, thus achieving a compact overall structure. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the rear part of the support frame of this utility model;

[0027] Figure 3 This is a cross-sectional view of the overall structure of this utility model from the right side.

[0028] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a rear view of the overall structure of this utility model.

[0030] Explanation of reference numerals in the attached drawings: 1. Support frame; 2. Rotating shaft; 3. Drive shaft; 4. First transmission wheel; 5. Second transmission wheel; 6. Belt; 7. Internal threaded hole; 8. Moving plate; 9. Adjusting screw; 10. Turning key; 11. Outer shell; 12. Opening; 13. Knob; 14. Motor; 15. Protective shell; 16. Heat dissipation hole; 17. Connecting plate; 18. Mounting hole; 19. Fixing screw; 20. First fastening bolt; 21. Second fastening bolt; 22. First fastening side plate; 23. Second fastening side plate; 24. Handle. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0032] like Figures 1 to 5As shown, an electric variable frequency speed-regulating turning device includes: a support frame 1; a rotating shaft 2, horizontally mounted on the side wall of the support frame 1; a transmission mechanism mounted on the support frame 1, the power output portion of which is connected to the rotating shaft 2 for driving the rotating shaft 2 to rotate; a fixing mechanism mounted on the support frame 1 for connecting the support frame 1 to a diesel engine; and a turning key 10 mounted at the front end of the rotating shaft 2 for connecting to the gear shaft of the turning mechanism. The transmission mechanism includes: a motor 14 mounted on the support frame 1; a first transmission wheel 4 mounted on the drive shaft 3 of the motor 14; and a second transmission wheel 5 mounted on the upper part of the first transmission wheel 4, connected to the rotating shaft 2, and connected to the first transmission wheel 4 via a belt 6. The second transmission wheel 5 and the first transmission wheel 4 are externally covered with a housing 11; the motor 14 is externally covered with a protective shell 15, the protective shell 15 having heat dissipation holes 16. The rotating shaft 2 has a slot at its front end, and a movable plate 8 is installed in the slot. The movable plate 8 has a screw hole, and its front end connects to the turning key 10. The turning key 10 has an internal screw hole 7 at its rear end, which communicates with the screw hole. The tail end of a horizontally positioned adjusting screw 9 passes sequentially through an opening 12 on the outer casing 11, the second transmission wheel 5, and the axial hole on the rotating shaft 2, and is then installed on the screw hole and the internal screw hole 7. A knob 13 is provided at the head of the adjusting screw 9. The fixing mechanism includes: a connecting plate 17, mounted on the support frame 1, with a strip-shaped mounting hole 18; and a horizontally positioned fixing screw 19, one end of which is fixed to the mounting hole 18 by a first fastening bolt 20 and a second fastening bolt 21, and the other end is fitted with a first fastening side plate 22 and a second fastening side plate 23. An external nut is provided on the outer side of the second fastening side plate 23, and the external nut is fitted onto the fixing screw 19. A handle 24 is provided at the top of the support frame 1.

[0033] Specifically, by rotating the knob 13, the knob 13 drives the adjusting screw 9 to rotate, and the rotating adjusting screw 9 drives the moving plate 8 to move back and forth, thereby fine-tuning the back and forth distance of the turntable key 10.

[0034] A motor 14 is fixedly installed on the rear side of the support frame 1. The output end of the motor 14 is fixedly connected to the rear end of the drive shaft 3. The motor 14 is a variable frequency motor.

[0035] Motor 14 serves as the driving source for drive shaft 3.

[0036] A protective shell 15 is fixedly installed on the rear side of the support frame 1. The protective shell 15 is fitted over the motor 14, and a heat dissipation hole 16 is provided on the rear side of the protective shell 15.

[0037] A connecting plate 17 is fixedly installed on the left side of the support frame 1. The surface of the connecting plate 17 has a mounting hole 18. A fixing screw 19 is inserted into the mounting hole 18. The right end of the fixing screw 19 is threadedly connected to a first fastening bolt 20. The left side of the first fastening bolt 20 is attached to the right side of the connecting plate 17.

[0038] The second fastening bolt 21 is movably connected to the external thread of the fixing screw 19. The right side of the second fastening bolt 21 is attached to the left side of the connecting plate 17. The first fastening side plate 22 and the second fastening side plate 23 are movably connected to the external thread of the second fastening bolt 21 from left to right.

[0039] The first fastening side plate 22 and the second fastening side plate 23 are used to fix the fixing screw 19 to the reserved mounting hole position on the turning mechanism.

[0040] In use, the operator fixes the fixing screw 19 to one side of the pre-drilled hole of the diesel engine using the fixing screw 19, the first fastening side plate 22, and the second fastening side plate 23. Then, the entire turning gear (including all components on the support frame 1) is mounted on the surface of the fixing screw 19 using the connecting plate 17, the first fastening bolt 20, and the second fastening bolt 21. The entire turning gear can be rotated and finely adjusted on the surface of the fixing screw 19. When the turning key 10 moves to the front of the gear shaft of the turning mechanism, the operator can turn the knob 13. The knob 13 drives the adjusting screw 9 to rotate, and the rotating screw 9 drives the moving plate 8 to move back and forth, thereby finely adjusting the front and rear distance of the turning key 10. The drive shaft 3 and the rotating shaft 2 are connected by the belt 6. Finally, the motor 14 is started, and the motor 14 drives the drive shaft 3 to rotate. The rotation of the drive shaft 3 drives the rotating shaft 2 to rotate through the second transmission wheel 5, the belt 6, and the first transmission wheel 4. The rotating shaft 2 drives the rear turning key 10 to rotate the gear shaft of the diesel engine turning mechanism.

[0041] The wiring diagram of the motor in this utility model is common knowledge in the field, and its working principle is a well-known technology. The appropriate model is selected according to actual use, so the control method and wiring layout of the motor will not be explained in detail.

[0042] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A rotating gear device with electric variable frequency speed regulation, characterized in that, include: Support frame (1); The rotating shaft (2) is horizontally set on the side wall of the support frame (1); The transmission mechanism is set on the support frame (1), and its power output part is connected to the rotating shaft (2) to drive the rotating shaft (2) to rotate; A fixing mechanism is installed on the support frame (1) and is used to connect the support frame (1) to the diesel engine; The turning key (10) is located at the front end of the rotating shaft (2) and is used to connect with the gear shaft of the turning mechanism.

2. The electric variable frequency speed control turning gear device according to claim 1, characterized in that, The transmission mechanism includes: The motor (14) is mounted on the support frame (1); The first transmission wheel (4) is mounted on the drive shaft (3) of the motor (14); The second transmission wheel (5) is located on the upper part of the first transmission wheel (4), and is connected to the rotating shaft (2) and connected to the first transmission wheel (4) through the belt (6).

3. The electric variable frequency speed control turning gear device according to claim 2, characterized in that, The second transmission wheel (5) and the first transmission wheel (4) are provided with outer shells (11); the motor (14) is provided with a protective shell (15), and the protective shell (15) is provided with heat dissipation holes (16).

4. The electric variable frequency speed control turning gear device according to claim 3, characterized in that, The front end of the rotating shaft (2) is provided with a slot, and a movable plate (8) is provided in the slot. A screw hole is provided on the movable plate (8). The front end of the movable plate (8) is connected to the turning key (10). The tail end of the turning key (10) is provided with an internal screw hole (7). The internal screw hole (7) and the screw hole are interconnected. The tail end of the horizontally arranged adjusting screw (9) passes through the opening (12) on the outer shell (11) and the axial hole on the second transmission wheel (5) and the rotating shaft (2) in sequence, and then is installed on the screw hole and the internal screw hole (7). A knob (13) is provided at the head of the adjusting screw (9).

5. The electric variable frequency speed control turning gear device according to claim 1, characterized in that, The fixing mechanism includes: A connecting plate (17) is provided on the support frame (1), and a strip-shaped mounting hole (18) is provided on it. The horizontally placed fixing screw (19) has one end fixed to the mounting hole (18) by the first fastening bolt (20) and the second fastening bolt (21), and the other end is fitted with the first fastening side plate (22) and the second fastening side plate (23). The second fastening side plate (23) is provided with an outer nut on the outside, and the outer nut is fitted on the fixing screw (19).

6. The electric variable frequency speed control turning gear device according to claim 1, characterized in that, The support frame (1) is provided with a handle (24) at the top.

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