Locking bolt for transportation machinery

Abstract

The utility model discloses a locking bolt for transportation machinery, which comprises a head part, a rod part and a gasket, the head part and the rod part are integrally formed, the rod part is provided with a thread and a strip-shaped groove, the inner side of the gasket is provided with a convex block matched with the strip-shaped groove, the outer side edge of the gasket is connected with a fixed plate, and the fixed plate is connected with the rod part. A fixing shaft is connected to the side edge of the fixing plate in the vertical direction, a first limiting plate and a second limiting plate are arranged on the portions, located on the two sides of the fixing shaft, of the side edge of the fixing plate in the vertical direction, a stop plate is rotationally arranged on the fixing shaft, a limiting spring is arranged on the second limiting plate, and the limiting spring is connected with the side edge of the lower portion of the stop plate. According to the scheme, a one-way locking mechanism is adopted, so that the safety of the locking bolt is improved, and the possibility of accidental loosening is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of locking bolts, and particularly relates to a locking bolt for a transportation machine. Background Art

[0002] Transportation machines are divided into continuous conveying machines, handling vehicles, loading and unloading machines, etc., and also include auxiliary devices of the conveying system, such as belt conveyors, plate conveyors, scraper conveyors, screw conveyors, bucket elevators, vibrating conveyors, pneumatic conveying devices, hydraulic conveying devices, etc. In transportation machines, locking bolts play a crucial role. The main function of the locking bolts is to tightly fix the various components of the transportation machine together. These components may include a vehicle frame, an engine, a transmission system, tires, etc. By tightening the bolts, it is ensured that these components will not loosen or shift due to vibration, impact or load changes during transportation, thereby ensuring the stability and safety of the entire machine.

[0003] Chinese Patent No. 2006200229539 discloses a loading and unloading vehicle with a multifunctional fixture, belonging to the field of transportation machines. It includes a fork, on which a flipping transmission device and a special fixture are arranged. The fixture consists of a bayonet locking bolt, a connecting sleeve, a setscrew hole, a cargo locking bolt, and a bayonet. The thread and the setscrew hole fixedly connect the connecting sleeve. One end of the connecting sleeve is connected to a shaft rod, and the other end locks the bayonet through the bayonet locking bolt. In the above solution, the locking bolt is used to ensure that the corresponding components will not loosen during transportation. However, the above locking bolt usually only has the function of forming a lock in cooperation with a nut, and it will still loosen after a long time. Content of the Utility Model

[0004] To solve the above problems, the utility model provides a locking bolt for a transportation machine, which includes a head, a rod portion, and a washer. The head and the rod portion are integrally formed. The rod portion is provided with a thread and a strip-shaped groove. The inner side of the washer is provided with a raised block matching the strip-shaped groove. The outer side edge of the washer is connected with a fixing plate. The side edge of the fixing plate is vertically connected with a fixing shaft. On both sides of the fixing shaft in the vertical direction of the side edge of the fixing plate, a first limiting plate and a second limiting plate are provided. The first limiting plate is vertically arranged, and the second limiting plate is inclined relative to the first limiting plate. A stop plate is rotatably arranged on the fixing shaft. A limiting spring is arranged on the second limiting plate, and the limiting spring is connected with the lower side edge of the stop plate.

[0005] Preferably, the rod portion is internally provided with an inner cavity. Both sides of the inner cavity are provided with sliding grooves communicating with the outside. A clamping block is slidably arranged on the sliding grooves. The inner side of the rod portion is bolted with an inner bolt. One end of the inner bolt extends into the inner cavity and is connected with a spherical portion.

[0006] Preferably, limiting grooves are formed on both sides of the sliding groove, limiting blocks are arranged on both sides of the clamping block, and the limiting blocks are slidably arranged in the limiting grooves.

[0007] Preferably, the bottom of the stop plate is of an inclined surface structure.

[0008] Preferably, a clamping member is arranged at the end of the fixed shaft.

[0009] The advantages of the present utility model are as follows:

[0010] 1. Through the combined design of the fixing plate, fixed shaft, stop plate and limiting spring, the one-way rotation limitation of the nut is realized. The nut is allowed to rotate clockwise to lock the component, but its counterclockwise rotation to loosen the component is prevented. The safety of the locking bolt is improved through the one-way locking mechanism, and the possibility of accidental loosening is prevented.

[0011] 2. By rotating the inner bolt to make the spherical part jack up the clamping block, and then making the clamping block extend out and lock the nut, the nut will be firmly fixed and unable to rotate. This locking method has high reliability and is especially suitable for transportation machinery and other equipment that need to maintain the locked state for a long time. Description of the Drawings

[0012] Figure 1 is the exploded structure diagram of the present utility model.

[0013] Figure 2 is the washer structure diagram of the present utility model.

[0014] Figure 3 is the sectional structure diagram when the present utility model locks the component.

[0015] Figure 4 is Figure 3 the enlarged structure diagram of the A mark in

[0016] Figure 5 is the external structure diagram of the present utility model without the locking component.

[0017] In the figure: 1 head, 2 rod part, 3 washer, 4 thread, 5 strip-shaped groove, 6 raised block, 7 fixing plate, 8 fixed shaft, 9 first limiting plate, 10 second limiting plate, 11 stop plate, 12 limiting spring, 13 inner cavity, 14 sliding groove, 15 clamping block, 16 inner bolt, 17 spherical part, 18 limiting groove, 19 limiting block, 20 inclined surface structure, 21 clamping member. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", 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. Therefore, it should not be construed as a limitation to the present utility model.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. At the same time, when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. When an element is referred to as "fixedly connected to" another element, it can adopt common fixed connection methods such as welding, bolt connection, or gluing connection. In short, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. Embodiment 1

[0021] As Figure 1-2 shown, a locking bolt for a transportation machine includes a head 1, a rod portion 2, and a washer 3. The head 1 and the rod portion 2 are integrally formed. Threads 4 and strip-shaped grooves 5 are provided on the rod portion 2. There are two strip-shaped grooves 5 in total and they are arranged along the axial direction of the rod portion 2. The inner side of the washer 3 is hollow, and a circular groove is provided with a raised block 6 that matches the strip-shaped groove 5. After the washer 3 is placed on the rod portion 2, it can move axially but cannot rotate.

[0022] A fixing plate 7 is connected to the outer side edge of the washer 3. A fixing shaft 8 is connected in the vertical direction on the side of the fixing plate 7. First limiting plates 9 and second limiting plates 10 are provided on both sides of the fixing shaft 8 in the vertical direction on the side of the fixing plate 7. A stop plate 11 is rotatably provided on the fixing shaft 8. The lower part of the stop plate 11 has a longer length and a heavier mass, so it is normally in a vertical state. The first limiting plate 9 is vertically arranged, and the second limiting plate 10 is inclined relative to the first limiting plate 9. The stop plate 11 can only rotate counterclockwise by a certain angle and reset, and cannot rotate clockwise.

[0023] A limiting spring 12 is provided on the second limiting plate 10. The limiting spring 12 is connected to the lower side edge of the stop plate 11, and the limiting spring 12 is used to assist the stop plate 11 to reset. When locking a component, first pass the rod portion 2 through the component, and then successively put on the washer 3 and the nut. The diameter of the circular groove inside the washer 3 is relatively large, and it can be directly put on the rod portion 2. The nut is threadedly connected to the thread 4 on the rod portion 2, and then the component is locked by rotation. By providing a strip-shaped groove 5 on the rod portion 2 and a matching raised block 6 inside the washer 3, it effectively prevents the washer 3 from rotating during the bolt locking process, ensuring that the washer 3 can be stably held between the component and the nut, thereby increasing the stability and reliability of the locking. Combined with Figure 5 , through the combined design of the fixing plate 7, the fixing shaft 8, the stop plate 11 and the limiting spring 12, the one-way rotation limit of the nut is realized. This design allows the nut to rotate clockwise to lock the component, but prevents it from rotating counterclockwise to loosen the component. This one-way locking mechanism improves the safety of the locking bolt and prevents the possibility of accidental loosening. The bottom of the stop plate 11 is a bevel structure 20, and the bevel structure 20 enables the stop plate 11 to slide to the appropriate position more easily when contacting the nut

[0024] Combined with Figure 3 and Figure 4 , an inner cavity 13 is provided inside the rod portion 2. Sliding grooves 14 communicating with the outside are provided on both sides of the inner cavity 13. A clamping block 15 is slidably provided on the sliding grooves 14. An inner bolt 16 is bolted to the inner side of the rod portion 2. One end of the inner bolt 16 extends into the inner cavity 13 and is connected with a spherical portion 17. By rotating the inner bolt 16, the end of the inner bolt 16 can be moved, so that the spherical portion 17 contacts one end of the clamping block 15, and then the clamping block 15 is jacked up, and then the clamping block 15 extends out and locks the nut. Once the clamping block 15 extends out and locks the nut, the nut will be firmly fixed and cannot rotate. This locking method has high reliability, especially suitable for transportation machinery and other equipment that need to maintain the locked state for a long time, and can further prevent the nut from loosening. Limiting grooves 18 are provided on both sides of the sliding grooves 14, and limiting blocks 19 are provided on both sides of the clamping block 15. The limiting blocks 19 are slidably arranged in the limiting grooves 18, and the limiting grooves 18 and the limiting blocks 19 are used to prevent the clamping block 15 from falling off.

[0025] A clamping member 21 is provided at the end of the fixing shaft 8. The function of the clamping member 21 is to prevent the stop plate 11 from falling off the fixing shaft 8 and to facilitate the disassembly of the stop plate 11 to tighten or loosen the nut. The clamping member 21 can be a bolt, a clamping rod or a wire perpendicular to the axial direction of the fixing shaft 8, etc., as long as it can limit the falling off of the stop plate 11.

[0026] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A locking bolt for a transportation machine, characterized in that: It includes a head (1), a rod portion (2) and a washer (3). The head (1) and the rod portion (2) are integrally formed. A thread (4) and a strip-shaped groove (5) are provided on the rod portion (2). A raised block (6) matching the strip-shaped groove (5) is provided on the inner side of the washer (3). A fixing plate (7) is connected to the outer side edge of the washer (3). A fixing shaft (8) is connected in the vertical direction on the side of the fixing plate (7). A first limiting plate (9) and a second limiting plate (10) are provided on both sides of the fixing shaft (8) in the vertical direction on the side of the fixing plate (7). The first limiting plate (9) is vertically arranged. The second limiting plate (10) is inclined relative to the first limiting plate (9). A stop plate (11) is rotatably provided on the fixing shaft (8). A limiting spring (12) is provided on the second limiting plate (10). The limiting spring (12) is connected to the lower side edge of the stop plate (11).

2. The locking bolt for a transport machine according to claim 1, characterized in that: An inner cavity (13) is provided inside the rod portion (2). Sliding grooves (14) communicating with the outside are provided on both sides of the inner cavity (13). A clamping block (15) is slidably provided on the sliding grooves (14). An inner bolt (16) is bolted to the inner side of the rod portion (2). One end of the inner bolt (16) extends into the inner cavity (13) and is connected to a spherical portion (17).

3. The locking bolt for a transportation machine according to claim 2, characterized in that: Limiting grooves (18) are provided on both sides of the sliding groove (14). Limiting blocks (19) are provided on both sides of the clamping block (15). The limiting blocks (19) are slidably arranged in the limiting grooves (18).

4. The locking bolt for a transportation machine according to claim 3, characterized in that: The bottom of the stop plate (11) is of an inclined surface structure (20).

5. The locking bolt for a transportation machine according to claim 4, characterized in that: A clamping member (21) is provided at the end of the fixing shaft (8).

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