A device for preventing iron filings from flying during wheel alignment
By employing a main baffle and anti-loosening connection mechanism on a non-dismounting lathe, and utilizing left-hand thread and conical surface clamping technology, the problems of baffle loosening and inconvenient maintenance are solved, achieving iron chip protection and equipment stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 浙江幸福轨道交通运营管理有限公司
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-21
AI Technical Summary
In existing non-dismounting wheel lathes, the baffles are prone to loosening due to vibration during lathe repair operations, resulting in a decrease in the protection effect against iron filings and making disassembly and maintenance inconvenient.
The main baffle and anti-loosening connection mechanism include a left-hand threaded seat, a main bolt with a concave conical surface, and a press-in bolt with a convex conical surface. The baffle is stably connected by the cooperation of the left-hand and right-hand threads and the conical surface pressing.
It effectively blocks iron filings from flying, prevents equipment from becoming loose, ensures the stability of equipment operation, and facilitates the disassembly and maintenance of the baffle.
Smart Images
Figure CN224526650U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mechanical processing equipment technology, and specifically refers to a chip anti-splashing device for a non-falling wheel lathe. Background Technology
[0002] Wheel turning machines are key equipment in the field of railway vehicle maintenance. They are mainly used to turn wheels without derailing the train. Through cutting and machining, the wheels can be restored to key dimensions such as roundness and tread profile, thus ensuring the safety and stability of train operation.
[0003] During the operation of a wheel lathe, the cutting of the wheel generates a large amount of high-speed flying iron filings. These filings pose a risk of cuts to operators and may also adhere to the precision components of the equipment, affecting its operational accuracy. While existing technologies use baffles to block the iron filings, these baffles are mostly fixed with ordinary bolts or welding. Ordinary bolts are prone to loosening under continuous vibration, requiring frequent maintenance; while welding makes the baffles non-removable, causing significant inconvenience for equipment maintenance and replacement. Therefore, there is an urgent need for a baffle fixing solution that is both vibration-resistant and easy to install and remove. Utility Model Content
[0004] This utility model solves the problems mentioned in the background art by cooperating with the main baffle and the anti-loosening mechanism, which includes a left-hand threaded seat, a main bolt with a concave conical surface, and a press-in bolt with a convex conical surface. The press-in bolt passes through the main bolt and the threaded seat and is connected to the bed in a right-hand screw, and the conical surface is pressed tightly.
[0005] The purpose of this utility model is achieved as follows: a chip anti-splash device for a non-falling lathe, comprising: The main baffle is located on the turning operation side of the non-dismounting wheel lathe; An anti-loosening connection mechanism is used to connect the main baffle to the bed of the non-drop wheel lathe. The anti-loosening connection mechanism includes at least one threaded seat on the main baffle, a main bolt screwed to the threaded seat, and a press-in bolt screwed to the bed. The threaded seat is provided with a left-hand internal thread, the main bolt is provided with a left-hand external thread that mates with the left-hand internal thread, and the head of the main bolt is provided with a concave conical surface and a through hole. The press-in bolt is provided with a right-hand external thread, and its head is provided with a convex conical surface that matches the concave conical surface. The press-in bolt passes through the through hole and threaded seat of the main bolt, and is screwed to the bed, thereby pressing the convex conical surface and the concave conical surface together.
[0006] The present invention is further configured such that the threaded seat is fixed to the main baffle by welding, pressing, or riveting.
[0007] The present invention is further configured such that the cone angle between the concave cone surface and the convex cone surface ranges from 2° to 60°.
[0008] The present invention is further configured such that the head of the main bolt is a flange head, and the bottom surface of the flange is pressed against the upper surface of the threaded seat.
[0009] The present invention is further configured to include a drive wheel baffle, which is installed on the drive wheel side of the non-drop wheel lathe via the anti-loosening connection mechanism.
[0010] The present invention is further configured to include a side pressure roller baffle, which is installed on the side pressure roller of the non-dropping wheel lathe via the anti-loosening connection mechanism.
[0011] The present invention is further configured to include a pressure claw baffle, which is installed on the pressure claw side of the non-drop wheel lathe via the anti-loosening connection mechanism.
[0012] By adopting the above technical solution, the beneficial effects that this utility model can achieve are: 1. By setting the main baffle on the turning operation side, it can directly block the flying iron filings generated during turning, solving the problem that iron filings can easily injure personnel and affect the precision parts of the equipment.
[0013] 2. By using the left-hand threaded seat in the anti-loosening connection mechanism to cooperate with the main bolt, and combining the convex conical surface of the press-in bolt with the concave conical surface of the main bolt to form a double anti-loosening mechanism, it resists the loosening caused by equipment vibration and solves the problem of reduced protection effect and equipment failure caused by loose bolts in existing baffles.
[0014] 3. By installing drive wheel baffles, side pressure wheel baffles, and pressure claw baffles in corresponding positions through the same anti-loosening connection mechanism, multi-directional iron chip protection is achieved, solving the problem of insufficient protection range of a single baffle. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the installation of the main baffle of this utility model; Figure 2 This is an exploded view of the anti-loosening connection mechanism of this utility model; Figure 3 This is a cross-sectional schematic diagram of the present invention; Figure 4 This is a schematic diagram of the installation of the drive wheel baffle of this utility model; Figure 5 This is a schematic diagram of the installation of the side pressure wheel baffle of this utility model; Figure 6 This is a schematic diagram of the installation of the pressure claw baffle of this utility model.
[0016] The attached figures are labeled as follows: 1. Bed; 2. Main baffle; 3. Anti-loosening connection mechanism; 30. Threaded seat; 31. Main bolt; 32. Press-in bolt; 33. Concave conical surface; 34. Through hole; 35. Convex conical surface; 4. Flange bottom surface; 5. Drive wheel baffle; 6. Side pressure wheel baffle; 7. Pressure claw baffle. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-6 : Example 1: This embodiment provides a chip anti-splash device for a non-falling wheel lathe, including: Main baffle 2 is located on the turning operation side of the non-drop wheel lathe; The anti-loosening connection mechanism 3 is used to connect the main baffle 2 to the bed 1 of the non-drop wheel lathe. The anti-loosening connection mechanism 3 includes at least one threaded seat 30 provided on the main baffle 2, a main bolt 31 screwed to the threaded seat 30, and a press-in bolt 32 screwed to the bed 1. The threaded seat 30 is provided with a left-hand internal thread, the main bolt 31 is provided with a left-hand external thread that mates with the left-hand internal thread, and the head of the main bolt 31 is provided with a concave conical surface 33 and a through hole 34. The press-in bolt 32 is provided with a right-hand external thread, and its head is provided with a convex conical surface 35 that matches the concave conical surface 33. The press-in bolt 32 passes through the through hole 34 and threaded seat 30 of the main bolt 31, and is screwed to the bed 1, thereby pressing the convex conical surface 35 and the concave conical surface 33 together.
[0018] The main baffle 2 is used to directly block most of the flying iron chips cut by the tool from the wheel set and guide them to fall into the chip breaker under the wheel-free lathe. It is generally a plate-shaped structure with a shape adapted to the protection requirements of the lathe repair work area and is connected to the bed 1 through the anti-loosening connection mechanism 3.
[0019] The anti-loosening connection mechanism 3 is used to connect the main baffle 2 to the bed 1 to prevent loosening caused by vibration, thereby ensuring that the main baffle 2 does not shift or fall off during operation. The anti-loosening connection mechanism 3 includes a threaded seat 30, a main bolt 31, and a press-fit bolt 32. The threaded seat 30 provides a base with sufficient wall thickness and strength for the connection of the main bolt 31, avoiding the risk of insufficient strength and stripping caused by directly machining left-hand internal threads on the thinner main baffle 2, thus ensuring the long-term reliability of the threaded connection. The threaded seat 30 is generally a block or cylindrical structure with an axially penetrating through hole inside. The inner wall of this through hole is machined with a left-handed internal thread. The threaded seat 30 is fixedly connected to the upper surface of the main baffle 2. The main bolt 31 connects the threaded seat 30 and the press-fit bolt 32, assisting in fixing the main baffle 2. It is generally a rod-shaped fastener with a left-handed external thread, engaging with the left-handed internal thread of the threaded seat 30. Its head has a concave conical surface 33 and a through hole 34. The concave conical surface 33 is an inwardly inclined conical surface, and the through hole 34 is an axially penetrating hole, connecting with the threaded seat 30. The through holes of the threaded seat 30 are coaxially aligned; the press-in bolt 32 is fixed by connecting with the bed 1 and engaging with the conical surface to prevent loosening. It is generally a rod-shaped fastener with a right-hand external thread, which is threaded to the pre-set right-hand threaded hole on the bed 1. Its head is provided with a convex conical surface 35, which is an outwardly protruding conical surface that is adapted to the concave conical surface 33 of the main bolt 31. After the press-in bolt 32 passes through the through hole 34 of the main bolt 31 and the threaded seat 30, it is screwed to the bed 1, and the convex conical surface 35 at the head is pressed and engaged with the concave conical surface 33 of the main bolt 31.
[0020] When the wheel turning machine is performing wheel turning operations, the main baffle 2 is located on the turning operation side, directly blocking the flying iron chips generated by cutting. The main baffle 2 is fixed by the anti-loosening connection mechanism 3: the threaded seat 30 is pre-fixed on the main baffle 2, and the main bolt 31 is screwed to the threaded seat 30 with a left-hand thread; the press-in bolt 32 passes through the through hole 34 of the main bolt 31 and the threaded seat 30 with a right-hand thread, and is screwed to the machine bed 1. The convex conical surface 35 of its head is tightly pressed against the concave conical surface 33 of the head of the main bolt 31. Since the main bolt 31 and the threaded seat 30 are engaged with a left-hand thread, and the press-in bolt 32 and the machine bed 1 are engaged with a right-hand thread, the two threads have opposite directions of rotation. After the convex conical surface 35 and the concave conical surface 33 are pressed together, a huge normal pressure and static friction are generated, forming a reliable mechanical lock that can resist the continuous vibration during turning operations, prevent the bolt from loosening, and ensure that the main baffle 2 is always stable in the set position, continuously playing the role of blocking iron chips.
[0021] The threaded seat 30 is fixed to the main baffle 2 by welding, press-fitting, or riveting. In this design, the threaded seat 30 is fixed to the main baffle 2 by welding, press-fitting, or riveting. The purpose of this design is that, compared to detachable methods such as bolt connections, these connection methods can form a more stable rigid connection between the threaded seat 30 and the main baffle 2, avoiding loosening or relative displacement under the continuous vibration of the lathe operation. At the same time, compared to methods such as bonding, its connection strength is higher, and it can withstand the axial and radial forces generated when the main bolt 31 and the press-fit bolt 32 are engaged, ensuring that the threaded seat 30 remains reliably fixed to the main baffle 2 during long-term use, providing basic support for the overall stability of the anti-loosening connection mechanism 3.
[0022] The cone angle between the concave cone surface 33 and the convex cone surface 35 ranges from 2° to 60°. In this design, the cone angle range between the concave cone surface 33 and the convex cone surface 35 is set to 2°-60°. The purpose of this design is to ensure that the two cone surfaces can form effective contact and generate sufficient clamping force when the press-in bolt 32 and the main bolt 31 are engaged. This avoids local deformation caused by a narrow contact surface and concentrated pressure due to an excessively small cone angle, and also prevents insufficient contact area and weakened locking effect due to an excessively large cone angle. This ensures a tight fit between the convex cone surface 35 and the concave cone surface 33, enhances the anti-loosening performance of the anti-loosening connection mechanism 3, and keeps the main baffle 2 stable and fixed when the equipment vibrates.
[0023] The head of the main bolt 31 is a flange head, and its flange bottom surface 4 is pressed against the upper surface of the threaded seat 30. In this design, the head of the main bolt 31 is a flange head, and its flange bottom surface 4 is pressed against the upper surface of the threaded seat 30. The purpose of this design is to increase the contact area between the head of the main bolt 31 and the threaded seat 30 by using the flange head. Compared with ordinary bolt heads, this allows the pressure generated when the main bolt 31 and the threaded seat 30 are screwed together to be transmitted to the threaded seat 30 more evenly, avoiding local deformation of the threaded seat 30 due to pressure concentration. At the same time, the tight pressing between the flange bottom surface 4 and the upper surface of the threaded seat 30 can further enhance the fit between the two. Combined with the locking effect of the conical surface, this improves the stability of the connection between the main bolt 31 and the threaded seat 30, reduces the risk of loosening caused by vibration, and ensures the overall reliability of the anti-loosening connection mechanism 3. The friction generated by this mechanism constitutes the third layer of anti-loosening protection after thread anti-loosening and conical surface anti-loosening.
[0024] The anti-loosening connection mechanism 3 is used to install drive wheel baffle 5, side pressure wheel baffle 6, and pressure claw baffle 7 on the drive wheel side, side pressure wheel side, and pressure claw side of the non-falling wheel lathe. In this design, drive wheel baffle 5, side pressure wheel baffle 6, and pressure claw baffle 7 are all constructed as plate-shaped structures adapted to the contours of the corresponding equipment positions on the non-falling wheel lathe. Drive wheel baffle 5 corresponds to the drive wheel side and is used to block iron chips that are not intercepted by the main baffle 2 and fly towards the drive wheel area, causing them to fall into the chip crusher. Side pressure wheel baffle 6 corresponds to the side pressure wheel side and is used to block iron chips that fly towards the side pressure wheel area. Pressure claw baffle 7 corresponds to the pressure claw side and prevents splashed iron chips from falling into the precision mechanism below the pressure claw, avoiding mechanism jamming or damage caused by iron chip intrusion. Their shapes are respectively fitted to the working space on each side to achieve shielding. All three components are connected by an anti-loosening connection mechanism 3, which consists of a threaded seat 30 on each baffle, a main bolt 31 screwed to the threaded seat 30, and a press-fit bolt 32 that passes through the through hole 34 of the main bolt 31 and the threaded seat 30 and is screwed to the bed 1. These components are installed in their respective positions. The design aims to address the issue of metal shavings splashing from the drive wheel side, side pressure wheel side, and pressure claw side during operation. It utilizes baffles of appropriate shapes to create targeted blocking, while the unified anti-loosening connection mechanism 3 ensures that each baffle remains stable during equipment vibration, preventing loosening and detachment. This, combined with the main baffle 2, forms a comprehensive metal shavings protection system, preventing metal shavings from affecting personnel and equipment.
[0025] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.
Claims
1. A chip anti-splashing device for a non-falling lathe, characterized in that, include: The main baffle (2) is located on the turning operation side of the non-drop wheel turning machine; The anti-loosening connection mechanism (3) is used to connect the main baffle (2) to the bed (1) of the non-drop wheel lathe. The anti-loosening connection mechanism (3) includes at least one threaded seat (30) provided on the main baffle (2), a main bolt (31) screwed to the threaded seat (30), and a press-in bolt (32) screwed to the bed (1). The threaded seat (30) is provided with a left-hand internal thread, the main bolt (31) is provided with a left-hand external thread that mates with the left-hand internal thread, and the head of the main bolt (31) is provided with a concave conical surface (33) and a through hole (34). The press-in bolt (32) is provided with a right-hand external thread, and its head is provided with a convex conical surface (35) that matches the concave conical surface (33). The press-in bolt (32) passes through the through hole (34) and threaded seat (30) of the main bolt (31), and is screwed to the bed (1), so that the convex conical surface (35) and the concave conical surface (33) are pressed together.
2. The anti-splashing device for iron filings on a non-falling wheel lathe according to claim 1, characterized in that, The threaded seat (30) is fixed to the main baffle (2) by welding, pressing, or riveting.
3. The anti-splashing device for iron filings on a non-falling wheel lathe according to claim 1, characterized in that, The cone angle between the concave cone surface (33) and the convex cone surface (35) ranges from 2° to 60°.
4. The anti-splashing device for iron filings on a non-falling wheel lathe according to claim 1, characterized in that, The head of the main bolt (31) is a flange head, and its flange bottom surface (4) is pressed against the upper surface of the threaded seat (30).
5. The anti-splashing device for iron filings on a non-falling wheel lathe according to claim 1, characterized in that, It also includes a drive wheel baffle (5), which is installed on the drive wheel side of the non-drop wheel lathe via the anti-loosening connection mechanism (3).
6. The anti-splashing device for iron filings on a non-falling wheel lathe according to claim 1, characterized in that, It also includes a side pressure roller baffle (6), which is installed on the side pressure roller side of the non-drop wheel lathe through the anti-loosening connection mechanism (3).
7. The anti-splashing device for iron filings on a non-falling wheel lathe according to claim 1, characterized in that, It also includes a pressure claw baffle (7), which is installed on the pressure claw side of the non-drop wheel lathe via the anti-loosening connection mechanism (3).