A bolt specification screening device for rail transit vehicles

Abstract

The utility model discloses a bolt gauge screening device of rail transit vehicle, it includes the chute and the slide that can be in the front, back sliding of chute, the end of slide is provided with clamping screening subassembly, clamping screening subassembly includes the transverse guide rail at the end of slide, the transverse guide rail inside rotationally connected with the lead screw, the thread of both ends of lead screw is opposite, both ends of lead screw all are connected with the sliding block of thread, two the sliding block fixed mounting has clamping rod respectively, two clamping rod is outward eight characters setting, one end of lead screw is connected with button handle through the one side of transverse guide rail. The whole device is convenient, and can be adapted to the fastener screening requirement of different size, thereby solves the problem of slow artificial screening, time -consuming, easy to make a mistake.

Description

Technical Field

[0001] This utility model relates to a rail transit vehicle assembly device, and more particularly to a bolt specification screening device for rail transit vehicles. Background Technology

[0002] Bolts and fasteners in rail transit vehicles are key components used to connect various parts of the train. Essentially a bolt, their quality and performance requirements far exceed those of ordinary bolts. Structurally, they resemble ordinary bolts, consisting of a head and a threaded shank. During train assembly, these bolts connect the car body frame structure, bogies to the car body, and various internal equipment to the main body. Due to the high speed and complex operating environment of trains, these bolts and fasteners need to possess high strength to withstand the loads and impacts during train operation, ensuring the stability of the connections. They also need excellent fatigue resistance to prevent loosening or breakage under long-term, frequent vibrations and stress changes. In terms of materials, high-strength alloy steel and other high-quality materials are typically used, and strict standards are applied to the manufacturing process. Train bolts are also corrosion-resistant to resist corrosion caused by rain, humidity, and salt, thus extending their service life.

[0003] Currently, the selection of bolt fastener specifications for rail transit vehicles has the following drawbacks: all bolt classification relies entirely on manual screening, which is relatively slow, consumes a lot of time, and affects the progress of production or assembly; it is prone to errors, as human attention decreases after working for a long time, which may lead to the selection of incorrect bolt specifications, thereby affecting product quality and safety; at the same time, the overall cost of manually selecting bolts is also high. Therefore, it is necessary to design a bolt specification screening device for rail transit vehicles. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a bolt specification screening device for rail transit vehicles.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is:

[0006] A bolt specification screening device for rail transit vehicles includes a chute and a slide that can slide back and forth within the chute. A clamping screening assembly is provided at the end of the slide. The clamping screening assembly includes a transverse guide rail located at the end of the slide. A lead screw is rotatably connected inside the transverse guide rail. The threads at both ends of the lead screw have opposite directions. A slider is threaded to both ends of the lead screw. A clamping rod is fixedly installed on each of the two sliders. The two clamping rods are arranged in an outward V-shape. One end of the lead screw passes through one side of the transverse guide rail and is connected to a knob.

[0007] According to some embodiments of the present invention, the sliding groove is disposed on the base plate, and there are multiple sliding grooves, which are evenly distributed in a ring around the center of the base plate.

[0008] According to some embodiments of the present invention, a power mechanism is provided at the center of the base plate, and the power mechanism drives the screw located in each of the slide grooves to rotate. The screw is threaded through the slide frame.

[0009] According to some embodiments of the present invention, the power mechanism includes a drive motor, and a bevel gear ring is provided on the output shaft of the drive motor, the bevel gear ring meshing with bevel gears located at the top of each screw.

[0010] According to some embodiments of the present invention, the overall cross-sectional shape of the clamping rod is L-shaped.

[0011] According to some embodiments of the present invention, the power mechanism is a drive motor, which is directly connected to the screw in the slide groove, and the screw is threaded onto the slide frame.

[0012] According to some embodiments of the present invention, the outer surface of the carriage is provided with a wear-resistant pad.

[0013] According to some embodiments of the present invention, a transverse baffle is provided above the transverse guide rail.

[0014] According to some embodiments of this utility model, the inside of the groove is designed with a convex cross section.

[0015] According to some embodiments of the present invention, the carriage as a whole has a convex cross-section design that matches the slide groove.

[0016] This invention has at least the following beneficial effects: Since different types of bolts have different nut sizes, when using this device, first adjust the position of the two clamping rods according to the nut size of the bolt to be screened. During adjustment, turn the knob to rotate the lead screw. Because the threads at both ends rotate in opposite directions, it can drive the slider to slide back and forth, thereby adjusting the movement of the two clamping rods to accommodate different nut sizes. During screening, place the bolt for testing with its nut between the two clamping rods, start the power mechanism, and the power mechanism drives the slide to move forward in the slide groove. At the same time, the two clamping rods move forward, which can cooperate with the inner wall of the slide groove to squeeze the nut against the inner side of the two clamping rods. If the nut fits snugly against the two clamping rods, it indicates that the bolt meets the screening requirements; otherwise, it does not meet the screening requirements. This device is convenient and easy to use, and can adapt to the screening requirements of fasteners of different sizes, thus solving the problems of slow, time-consuming, and error-prone manual screening. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0020] Figure 3 This is a schematic diagram of the power mechanism structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the clamping and screening component of this utility model. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and 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.

[0024] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Reference Figure 1 , Figure 2 A bolt specification screening device for rail transit vehicles includes a chute 1, inside which a carriage 3 driven by a power mechanism 2 is movably mounted. A clamping screening assembly 4 is provided at the end of the carriage 3. (Refer to...) Figure 4The clamping and screening assembly 4 includes a transverse guide rail 41 located at the end of the slide 3. A lead screw 42 is rotatably connected inside the transverse guide rail 41. The threads at both ends of the lead screw 42 have opposite directions. Both ends of the lead screw 42 are threadedly connected to sliders 43. Clamping rods 44 are fixedly installed on the two sliders 43 respectively. The two clamping rods 44 are arranged in an outward V-shape. One end of the lead screw 42 passes through one side of the transverse guide rail 41 and is connected to a knob 45.

[0027] When different sizes of nuts need to be selected, the knob 45 is turned to adjust the rotation of the lead screw 42. Because the threads at both ends turn in opposite directions, the slider 43 can be driven to slide back and forth, thereby adjusting the movement of the two clamping rods 44 to clamp nuts of different sizes. This improves the ease of use of the device, making it adaptable to the assembly and processing of fasteners of different sizes, expanding its application range, and providing a stable and efficient clamping solution for fastener installation. The clamping rods 44 have an overall L-shaped cross-section. This shape design allows for better contact with the bolts, ensuring clamping stability. A transverse baffle 46 is provided above the transverse guide rail 41 to assist in the clamping operation and further improve the reliability of the clamping.

[0028] The slide groove 1 has a convex cross-section design inside; the slide 3 has a convex cross-section design that matches the slide groove 1, making the slide 3 slide more stably in the slide groove 1 and less prone to deviation. The outer surface of the slide 3 is provided with wear-resistant pads, which extends the service life of the device.

[0029] To simultaneously screen multiple bolts by specifications, six grooves 1 are provided on the base plate 5, evenly distributed in a ring around the center of the base plate 5. A power mechanism 2 is located at the center of the base plate 5, which drives the screws 31 located in each of the grooves 1 to rotate. The screws 31 are threaded onto the carriage 3.

[0030] Reference Figure 3 To ensure synchronous operation of the screws 31 within each of the slide grooves 1, the power mechanism 2 includes a drive motor 21. A bevel gear ring 23 is mounted on the output shaft 22 of the drive motor 21, and the bevel gear ring 23 meshes with bevel gears 311 located at the top of each screw 31. The power mechanism 2, through the meshing connection between the bevel gear ring 23 and the bevel gears 311, efficiently transmits power to the bevel gears 311, thereby driving the slide 3 to move forward and backward within the slide grooves 1. This achieves centralized power supply and synchronous control, resulting in a simple and efficient overall design that meets the requirements for selecting high-speed train bolt specifications, improving efficiency and accuracy.

[0031] If it is necessary to control the independent operation of a single screw 31, the power mechanism 2 is a drive motor 21, which is directly connected to the screw 31 in the slide 1. The screw 31 is threaded onto the slide 3.

[0032] Since different bolt models have different nut sizes, when using this device, first adjust the position of the two clamping rods 44 according to the nut size of the bolt to be screened. During adjustment, turn the knob 45 to rotate the lead screw 42. Because the threads at both ends turn in opposite directions, it can drive the slider 43 to slide back and forth, thereby adjusting the movement of the two clamping rods 44 to accommodate different nut sizes. During screening, place the bolt for testing with its nut between the two clamping rods 44, start the power mechanism 2, and the power mechanism 2 will drive the slide 3 to move forward in the slide groove 1. At the same time, the two clamping rods 44 move forward, thus engaging with the inner wall of the slide groove 1 to press the nut against the inside of the two clamping rods 44. If the nut fits snugly against the two clamping rods 44, it indicates that the bolt meets the screening requirements; otherwise, it does not meet the screening requirements. This device is convenient and easy to use, and can adapt to the screening requirements of fasteners of different sizes, thus solving the problems of slow, time-consuming, and error-prone manual screening.

[0033] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A bolt specification screening device for rail transit vehicles, characterized in that: The slide includes a chute (1) and a slide frame (3) that can slide back and forth in the chute (1). The end of the slide frame (3) is provided with a clamping and screening assembly (4). The clamping and screening assembly (4) includes a transverse guide rail (41) located at the end of the slide frame (3). A lead screw (42) is rotatably connected inside the transverse guide rail (41). The threads at both ends of the lead screw (42) are opposite. Both ends of the lead screw (42) are threadedly connected to sliders (43). Each of the two sliders (43) is fixedly mounted with a clamping rod (44). The two clamping rods (44) are arranged in an outward V-shape. One end of the lead screw (42) passes through one side of the transverse guide rail (41) and is connected to a knob (45).

2. The bolt specification screening device for rail transit vehicles according to claim 1, characterized in that: The groove (1) is set on the base plate (5). There are multiple grooves (1), which are evenly distributed in a ring around the center of the base plate (5).

3. The bolt specification screening device for rail transit vehicles according to claim 2, characterized in that: The base plate (5) is provided with a power mechanism (2) at its center. The power mechanism (2) drives the screw (31) located in each of the slide grooves (1) to rotate. The screw (31) is threaded onto the slide (3).

4. The bolt specification screening device for rail transit vehicles according to claim 3, characterized in that: The power mechanism (2) includes a drive motor (21), and a bevel gear ring (23) is provided on the output shaft (22) of the drive motor (21). The bevel gear ring (23) meshes with the bevel gear (311) located at the top of each screw (31).

5. The bolt specification screening device for rail transit vehicles according to claim 1, characterized in that: The clamping rod (44) has an L-shaped overall cross-section.

6. The bolt specification screening device for rail transit vehicles according to claim 3, characterized in that: The power mechanism (2) is a drive motor (21), which is directly connected to the screw (31) in the slide (1). The screw (31) is threaded onto the slide (3).

7. The bolt specification screening device for rail transit vehicles according to claim 1, characterized in that: The outer surface of the slide (3) is provided with wear-resistant pads.

8. The bolt specification screening device for rail transit vehicles according to claim 1, characterized in that: A transverse baffle (46) is provided above the transverse guide rail (41).

9. A bolt specification screening device for rail transit vehicles according to claim 1, characterized in that: The groove (1) has a convex cross-section design inside.

10. A bolt specification screening device for rail transit vehicles according to claim 1, characterized in that: The slide (3) is designed with a convex cross section that matches the slide groove (1).

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