Bolt specification screening device for rail transit vehicle

Abstract

The bolt specification screening device of the rail transit vehicle comprises a sliding groove, a sliding frame driven by a power mechanism is movably installed in the sliding groove, a clamping screening assembly is arranged at the end of the sliding frame, and the clamping screening assembly comprises a transverse guide rail located at the end of the sliding frame. A screw rod is rotationally connected into the transverse guide rail, the screwing directions of threads at the two ends of the screw rod are opposite, sliding blocks are connected to the two ends of the screw rod in a threaded mode, clamping rods are fixedly installed on the two sliding blocks respectively, the two clamping rods are arranged in a splayed mode, and one end of the screw rod penetrates through one side of the transverse guide rail to be connected with a button handle. The whole device is convenient to use and can meet the screening requirements of fasteners of different sizes, and therefore the problems that manual screening is low in speed, consumes time and is prone to making mistakes are solved.

Description

Technical Field

[0001] The present invention relates to an assembly device for rail transit vehicles, and particularly to a bolt specification screening device for rail transit vehicles. Background Art

[0002] The bolt fasteners of rail transit vehicles are key components used for connecting various parts of the train. In essence, it is a kind of bolt, but its quality and performance requirements far exceed those of ordinary bolts. Structurally, it is similar to an ordinary bolt, having a head and a screw part. The screw is threaded. During the assembly of the train, such bolts are used to connect components such as the car body frame structure, the bogie and the car body, and various in-car equipment and the main body of the car body. Due to the high running speed and complex operating environment of the train, the bolt fasteners of the train need to have high strength to withstand the loads and impact forces during the train operation to ensure the stability of the connection parts during operation. At the same time, it also needs to have good anti-fatigue performance and can withstand long-term frequent vibrations and stress changes without loosening, breaking, etc.; in terms of materials, high-strength alloy steel and other high-quality materials are usually used, and there are also strict standards in the manufacturing process; the bolts of the EMU have corrosion resistance to resist corrosion caused by factors such as rain, humidity, and salt, so as to extend the service life.

[0003] At present, there are the following disadvantages in the specification screening of bolt fasteners for rail transit vehicles: all bolt classification is carried out manually, the speed is relatively slow, it takes a lot of time, and it affects the progress of production or assembly; it is easy to make mistakes. People's attention will decline after long-term work, which will lead to the wrong selection of bolt specifications, thus affecting the quality and safety of products; at the same time, the comprehensive cost of manually selecting bolts is also relatively high. Therefore, a bolt specification screening device for rail transit vehicles needs to be designed. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a bolt specification screening device for rail transit vehicles.

[0005] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0006] A bolt specification screening device for rail transit vehicles, which includes a chute. A carriage driven by a power mechanism is movably installed inside the chute. A clamping and screening assembly is provided at the end of the carriage. The clamping and screening assembly includes a transverse guide rail at the end of the carriage. A lead screw is rotatably connected inside the transverse guide rail. The thread directions at both ends of the lead screw are opposite. Both ends of the lead screw are threadedly connected with sliders. The two sliders are respectively fixedly installed with clamping rods. The two clamping rods are arranged in an outward V shape. One end of the lead screw penetrates through one side of the transverse guide rail and is connected to a knob handle.

[0007] According to some embodiments of the present invention, the chute is arranged on the base plate, and there are multiple chutes, which are evenly distributed in a circular shape with the center of the base plate as the center.

[0008] According to some embodiments of the present invention, a power mechanism is arranged at the center of the base plate, and the power mechanism drives the screws located in each chute to rotate, and the screws are threadedly connected to the carriage through the threads.

[0009] According to some embodiments of the present invention, the power mechanism includes a driving motor, and a bevel gear ring is arranged on the output shaft of the driving motor, and the bevel gear ring meshes with the bevel gears located at the tops of the respective screws.

[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 driving motor, and the driving motor is directly connected to the screw in the chute, and the screw is threadedly connected to the carriage through the threads.

[0012] According to some embodiments of the present invention, wear-resistant gaskets are arranged on the outer surface of the carriage.

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

[0014] According to some embodiments of the present invention, the inside of the chute is designed with a convex-shaped cross-section.

[0015] According to some embodiments of the present invention, the overall shape of the carriage is designed with a convex-shaped cross-section matching the chute.

[0016] The present invention has at least the following beneficial effects: Since the sizes of the nuts on bolts of different models are different, when using this device, first adjust the positions of the two clamping rods according to the size of the nut on the selected bolt. When adjusting, turn the knob to adjust the rotation of the screw rod. Because the thread directions at both ends are opposite, it can drive the slider to slide back and forth, and then adjust the movement of the two clamping rods to adapt to nuts of different sizes. When screening, place the nut position of the test bolt between the two clamping rods, start the power mechanism, and the power mechanism drives the carriage to move forward in the chute. At the same time, the two clamping rods move forward, and then cooperate with the inner wall of the chute to squeeze the nut against the inner sides of the two clamping rods. If the nut fits well with the two clamping rods, it indicates that the bolt meets the screening requirements; otherwise, it indicates that it does not meet the screening requirements. This device is convenient and easy to use as a whole, and can adapt to the screening requirements of fasteners of different sizes, thus solving the problems of slow manual screening speed, time-consuming, and easy to make mistakes. Description of the Drawings

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, where:

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic structural diagram of the present invention in another direction;

[0020] Figure 3 is a schematic structural diagram of the power mechanism of the present invention;

[0021] Figure 4 is a schematic structural diagram of the clamping and screening assembly of the present invention. Detailed Embodiment

[0022] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up and down, etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention 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 therefore should not be construed as limiting the present invention.

[0024] In the description of the present invention, "a plurality of" means more than two. If there is a description of the first and the second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0026] Referring to Figure 1 、 Figure 2 , a bolt specification screening device for a rail transit vehicle, which includes a chute 1, inside which a carriage 3 driven by a power mechanism 2 is movably installed, and a clamping and screening assembly 4 is arranged at the end of the carriage 3. Referring to Figure 4, the clamping and screening assembly 4 includes a transverse guide rail 41 located at the end of the carriage 3. A lead screw 42 is rotatably connected inside the transverse guide rail 41. The thread directions at both ends of the lead screw 42 are opposite. Both ends of the lead screw 42 are threadedly connected with 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 penetrates through one side of the transverse guide rail 41 and is connected to a knob handle 45.

[0027] When it is necessary to screen nuts of different sizes, turn the knob handle 45 to adjust the rotation of the lead screw 42. Because the thread directions at both ends are opposite, it can drive the sliders 43 to slide back and forth, and then adjust the movement of the two clamping rods 44 to clamp nuts of different sizes, improving the convenience of using the device, enabling it to adapt to the assembly and processing of fasteners of different sizes, expanding the scope of application, and providing a stable and efficient clamping solution for the installation of fasteners. The overall cross-sectional shape of the clamping rod 44 is L-shaped. This shape design can better fit the bolt to ensure the stability of clamping. A transverse baffle 46 is arranged above the transverse guide rail 41, which can assist the clamping operation and further improve the reliability of clamping.

[0028] The inside of the chute 1 is designed with a convex-shaped cross-section; the overall shape of the carriage 3 is a convex-shaped cross-section matching the chute 1, making the sliding of the carriage 3 in the chute 1 more stable and not prone to deviation. Wear-resistant gaskets are arranged on the outer surface of the carriage 3, extending the service life of the device.

[0029] In order to screen the specifications of multiple bolts simultaneously, the chute 1 is arranged on the base plate 5. There are 6 chutes 1, and they are evenly distributed in a circular shape centered on the center of the base plate 5. A power mechanism 2 is arranged at the center of the base plate 5. The power mechanism 2 drives the screw rods 31 located in each chute 1 to rotate. The screw rods 31 are threadedly connected to the carriage 3 through threads.

[0030] Refer to Figure 3 , in order to make the screw rods 31 in each chute 1 synchronously linked, the power mechanism 2 includes a driving motor 21. A bevel gear ring 23 is arranged on the output shaft 22 of the driving motor 21. The bevel gear ring 23 meshes with the bevel gears 311 located at the tops of the screw rods 31 respectively. The power mechanism 2 is meshed and connected with the bevel gear 411 through the bevel gear ring 23, which can efficiently transmit power to the bevel gear 311, and then drive the carriage 3 to move forward and backward in the chute 1, realizing the centralized supply and synchronous control of power. The overall design is simple and efficient, which can meet the requirements of the specification screening of EMU bolts, improving the efficiency and accuracy.

[0031] If it is necessary to independently control the individual 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 chute 1, and the screw 31 is threadedly connected to the carriage 3.

[0032] Since the sizes of nuts on bolts of different models are different, when using this device, first adjust the positions of the two clamping rods 44 according to the size of the nut on the selected bolt. When adjusting, turn the knob 45 to rotate the lead screw 42. Because the thread directions at both ends are opposite, it can drive the slider 43 to reciprocate, thereby adjusting the movement of the two clamping rods 44 to adapt to nuts of different sizes. When screening, place the nut position of the test bolt between the two clamping rods 44, start the power mechanism 2, and the power mechanism 2 drives the carriage 3 to move forward in the chute 1. At the same time, the two clamping rods 44 move forward, and then cooperate with the inner wall of the chute 1 to squeeze the nut inside the two clamping rods 44. If the nut fits with 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 as a whole, and can adapt to the screening requirements of fasteners of different sizes, thus solving the problems of slow manual screening speed, time-consuming, and easy to make mistakes.

[0033] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A bolt specification screening device for rail transit vehicles, characterized in that: It includes a chute (1), inside which a carriage (3) driven by a power mechanism (2) is movably installed. A clamping and screening assembly (4) is provided at the end of the carriage (3). The clamping and screening assembly (4) includes a transverse guide rail (41) at the end of the carriage (3). A lead screw (42) is rotatably connected inside the transverse guide rail (41). The thread directions at both ends of the lead screw (42) are opposite. Both ends of the lead screw (42) are threadedly connected with sliders (43). Each of the two sliders (43) is fixedly installed with a clamping rod (44). The two clamping rods (44) are arranged in an outward V shape. One end of the lead screw (42) penetrates through one side of the transverse guide rail (41) and is connected to a knob handle (45).

2. The bolt specification screening device for a rail transit vehicle according to claim 1, wherein: The chute (1) is arranged on a base plate (5). There are multiple chutes (1), which are evenly distributed in a circular ring with the center of the base plate (5) as the center.

3. The bolt specification screening device for a rail transit vehicle according to claim 2, characterized in that: A power mechanism (2) is arranged at the center of the base plate (5). The power mechanism (2) drives the rotation of a screw rod (31) located in each chute (1). The screw rod (31) is threadedly connected to the carriage (3).

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

5. The bolt specification screening device for a rail transit vehicle according to claim 1, characterized in that: The overall cross-sectional shape of the clamping rod (44) is L-shaped.

6. The bolt specification screening device for a rail transit vehicle according to claim 1, characterized in that: The power mechanism (2) is a driving motor (21). The driving motor (21) is directly connected to the screw rod (31) inside the chute (1). The screw rod (31) is threadedly connected to the carriage (3).

7. A bolt specification screening device for a rail transit vehicle according to claim 1, characterized in that: A wear-resistant gasket is arranged on the outer surface of the carriage (3).

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

9. The bolt specification screening device for a rail transit vehicle according to claim 1, characterized in that: The inside of the chute (1) is designed with a convex-shaped cross-section.

10. A bolt specification screening device for a rail transit vehicle according to claim 10, characterized in that: The overall cross-sectional shape of the carriage (3) is designed to match the chute (1) and is convex-shaped.

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