A safety device for limiting and locking a construction machine

Abstract

The utility model discloses an engineering machinery limiting locking safety device, including self -adaptation adjusting structure, still include, guide locking structure is arranged in the both ends of self -adaptation adjusting structure, including guide assembly and limiting component, limiting alarm structure is arranged in the bottom of self -adaptation adjusting structure, the self -adaptation adjusting structure includes top positioning seat, the both sides of top positioning seat are provided with pulley, the bottom of top positioning seat is provided with trigger switch. The utility model provides an engineering machinery limiting locking safety device, through self -adaptation adjusting structure including guide rod, adjusting screw rod and knob, the height of device can be accurately controlled, this makes the device can nimblely adapt to the work demand of different lifting height of fork truck, ensures that the limiting point is always accurate and reliable, simultaneously, the stable structure of mechanical type adjusting mode is not dependent on electric power, can also work stably in the harsh engineering machinery environment.

Description

Technical Field

[0001] This utility model relates to the technical field of limit locking safety devices, and in particular to a limit locking safety device for engineering machinery. Background Technology

[0002] Construction machinery is an important component of the equipment manufacturing industry. In general terms, construction machinery refers to the mechanical equipment necessary for comprehensive mechanized construction projects, including earthwork construction, road construction and maintenance, mobile lifting and loading operations, and various building projects. It is mainly used in national defense construction, transportation construction, energy industry construction and production, mining and other raw material industry construction and production, agriculture, forestry and water conservancy construction, industrial and civil construction, urban construction, and environmental protection. While the product scope defined by different countries is generally similar, China's construction machinery sector, compared to other countries, also includes railway line construction machinery, forklifts and industrial handling vehicles, decoration machinery, elevators, and pneumatic tools.

[0003] In summary, the existing devices have the following technical problems: the existing limit locking devices may lack adaptive adjustment functions, resulting in the inability to dynamically adjust according to the actual height or load changes during forklift lifting, thus affecting the accuracy and reliability of the limit. The existing devices may not lock securely or lack a monitoring mechanism, making them prone to loosening or failure when the limit is lifted by the forklift, and failing to provide timely alarms. Therefore, it is necessary to propose a limit locking safety device for engineering machinery to provide a new technical solution to solve the technical problems mentioned in the above patent. Utility Model Content

[0004] Therefore, it is necessary to provide a limit locking safety device for engineering machinery to address the aforementioned technical problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A limit locking safety device for engineering machinery.

[0007] The engineering machinery limit locking safety device specifically includes an adaptive adjustment structure, and also includes:

[0008] A guide locking structure is located at both ends of the adaptive adjustment structure, including a guide component and a limit component;

[0009] The limit alarm structure is located at the bottom of the adaptive adjustment structure;

[0010] The adaptive adjustment structure includes a top positioning seat, pulleys on both sides of the top positioning seat, and a trigger switch at the bottom of the top positioning seat.

[0011] As a preferred embodiment of the engineering machinery limiting and locking safety device provided by this utility model, the bottom surface of the top positioning seat is mirror-hinged with a first extension arm, the end of the first extension arm away from the top positioning seat is hinged with a side positioning frame, the surface of the side positioning frame is hinged with a second extension arm, and the end of the second extension arm away from the side positioning frame is hinged with a bottom positioning seat.

[0012] As a preferred embodiment of the engineering machinery limit locking safety device provided by this utility model, the bottom positioning seat is symmetrically and fixedly connected with guide rods inside, the top positioning seat is slidably disposed on the surface of the guide rods, the bottom positioning seat is rotatably disposed with an adjusting screw inside, the top end of the adjusting screw extends to the upper end of the top positioning seat, the top positioning seat is threadedly connected to the adjusting screw, and the top end of the adjusting screw is fixedly connected with a knob.

[0013] As a preferred embodiment of the engineering machinery limiting and locking safety device provided by this utility model, a frame is fixedly connected to the surface of the side positioning frame, a slide rod is fixedly connected inside the frame, a first spring is sleeved on the surface of the slide rod, a shaft is slidably arranged on the surface of the slide rod, and a pulley is fixedly connected to the surface of the shaft.

[0014] In a preferred embodiment of the engineering machinery limiting and locking safety device provided by this utility model, a gear is fixedly connected to the surface of the shaft, a positioning rod is fixedly connected to the inner side of the side positioning frame, a limiting tooth is fixedly connected to the end of the positioning rod, and the limiting tooth is inserted into the inside of the gear.

[0015] As a preferred embodiment of the engineering machinery limit locking safety device provided by this utility model, a telescopic rod is slidably arranged inside the bottom positioning seat, and a trigger plate is fixedly connected to one end of the telescopic rod away from the bottom positioning seat. A second spring is sleeved on the surface of the telescopic rod, and the two ends of the second spring are fixedly connected to the bottom positioning seat and the trigger plate respectively. A trigger switch is fixedly connected to the top surface of the trigger plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The engineering machinery limit locking safety device provided by this utility model has an adaptive adjustment structure including a guide rod, an adjusting screw and a knob. The height of the device can be precisely controlled, which allows the device to flexibly adapt to the working requirements of different lifting heights of forklifts, ensuring that the limit point is always accurate and reliable. At the same time, the mechanical adjustment method has a stable structure, does not rely on electricity, and can work stably in harsh engineering machinery environments.

[0018] The engineering machinery limit locking safety device provided by this utility model integrates a guide locking structure and a limit alarm structure, forming a dual protection. The guide locking structure achieves a purely mechanical, self-locking, and reliable fixation through the meshing of teeth with limit teeth, effectively preventing accidental loosening under vibration or impact. The limit alarm structure, through trigger switches and other components, can issue an alarm or cut off power when the system abnormally exceeds the limit, realizing an upgrade from passive prevention to active early warning, greatly enhancing operational safety. Attached Figure Description

[0019] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of the engineering machinery limit locking safety device provided by this utility model;

[0021] Figure 2 A schematic diagram of the adaptive adjustment structure of the engineering machinery limit locking safety device provided by this utility model;

[0022] Figure 3 A schematic diagram of the limit component in the adaptive adjustment structure of the engineering machinery limit locking safety device provided by this utility model;

[0023] Figure 4 A schematic diagram of the internal structure of the limit component in the adaptive adjustment structure of the engineering machinery limit locking safety device provided by this utility model;

[0024] Figure 5 A schematic diagram of the guide locking structure of the engineering machinery limit locking safety device provided by this utility model.

[0025] The markings in the diagram are explained as follows:

[0026] 1. Adaptive adjustment structure; 2. Guide locking structure; 3. Limit alarm structure; 4. Top positioning seat; 5. First extension arm; 6. Side positioning frame; 7. Second extension arm; 8. Bottom positioning seat; 9. Guide rod; 10. Adjusting screw; 11. Knob; 12. Slide rod; 13. First spring; 14. Shaft; 15. Pulley; 16. Positioning rod; 17. Limiting tooth; 18. Gear; 19. Telescopic rod; 20. Second spring; 21. Trigger plate; 22. Trigger switch; 23. Frame. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0028] As in the background art, existing limit locking devices may lack adaptive adjustment functions, resulting in the inability to dynamically adjust according to actual height or load changes during forklift lifting, thus affecting the accuracy and reliability of the limit. Existing devices may not lock securely or lack a monitoring mechanism, making them prone to loosening or failure when the forklift lifts the limit, and failing to provide timely alarms.

[0029] To solve this technical problem, this utility model provides a limit locking safety device for engineering machinery.

[0030] For details, please refer to Figures 1-3 The engineering machinery limit locking safety device specifically includes an adaptive adjustment structure 1, and also includes:

[0031] The guide locking structure 2 is located at both ends of the adaptive adjustment structure 1 and includes a guide component and a limit component;

[0032] Limit alarm structure 3 is located at the bottom of adaptive adjustment structure 1;

[0033] The adaptive adjustment structure 1 includes a top positioning seat 4, with pulleys 15 on both sides of the top positioning seat 4 and a trigger switch 22 at the bottom of the top positioning seat 4.

[0034] The engineering machinery limit locking safety device provided by this utility model has a height that can be precisely controlled by an adaptive adjustment structure 1 including a guide rod 9, an adjusting screw 10, and a knob 11. This allows the device to flexibly adapt to the working requirements of different lifting heights of forklifts, ensuring that the limit point is always accurate and reliable. At the same time, the mechanical adjustment method has a stable structure, does not rely on electricity, and can work stably in harsh engineering machinery environments.

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0036] Example 1:

[0037] Please refer to Figures 2-4 A limit locking safety device for engineering machinery includes an adaptive adjustment structure 1, and further includes:

[0038] The guide locking structure 2 is located at both ends of the adaptive adjustment structure 1 and includes a guide component and a limit component;

[0039] Limit alarm structure 3 is located at the bottom of adaptive adjustment structure 1;

[0040] The adaptive adjustment structure 1 includes a top positioning seat 4, with pulleys 15 on both sides of the top positioning seat 4, and a trigger switch 22 at the bottom of the top positioning seat 4.

[0041] Specifically, the bottom surface of the top positioning seat 4 is hinged to a first extension arm 5, the end of the first extension arm 5 away from the top positioning seat 4 is hinged to a side positioning frame 6, the surface of the side positioning frame 6 is hinged to a second extension arm 7, and the end of the second extension arm 7 away from the side positioning frame 6 is hinged to a bottom positioning seat 8.

[0042] Specifically, the bottom positioning seat 8 is symmetrically and fixedly connected with a guide rod 9, the top positioning seat 4 is slidably disposed on the surface of the guide rod 9, the bottom positioning seat 8 is rotatably disposed with an adjusting screw 10, the top end of the adjusting screw 10 extends to the upper end of the top positioning seat 4, the top positioning seat 4 is threadedly connected to the adjusting screw 10, and the top end of the adjusting screw 10 is fixedly connected with a knob 11.

[0043] Specifically, a frame 23 is fixedly connected to the surface of the side positioning frame 6, a slide rod 12 is fixedly connected inside the frame 23, a first spring 13 is sleeved on the surface of the slide rod 12, a shaft 14 is slidably arranged on the surface of the slide rod 12, and a pulley 15 is fixedly connected to the surface of the shaft 14.

[0044] Specifically, a gear 18 is fixedly connected to the surface of the shaft 14, a positioning rod 16 is fixedly connected to the inner side of the side positioning frame 6, and a limiting tooth 17 is fixedly connected to the end of the positioning rod 16. The limiting tooth 17 is inserted into the inside of the gear 18.

[0045] With the above structural design, when using the device, the main body of the device is first placed in the middle of the forklift frame. After completion, the adjustment screw 10 is rotated by turning the knob 11. While the adjustment screw 10 is rotating, the top positioning seat 4 gradually moves closer to the bottom positioning seat 8. As the top positioning seat 4 moves, it pushes the first extension arm 5 and the second extension arm 7 to push the side positioning frame 6 to extend to both sides until the pulley 15 is in close contact with the middle of the forklift frame. Then, the knob 11 is stopped. At this time, the main body of the device can be moved up or down in the middle of the forklift frame. After moving to a suitable distance, the knob 11 is turned again. At this time, the pulley 15 is squeezed in the opposite direction by the side positioning frame 6, causing the shaft 14 to slide on the surface of the slide bar 12, and at the same time, the first spring 13 is compressed. While the shaft 14 moves, it drives the gear 18 on its surface to move synchronously. While the gear 18 moves, the limiting tooth 17 is inserted into the inside of the gear 18. At this time, the pulley 15 can be limited, and the lifting of the forklift can also be limited.

[0046] Example 2:

[0047] The engineering machinery limit locking safety device provided in Example 1 has been further optimized, specifically, as follows: Figures 4-5 As shown, a telescopic rod 19 is slidably arranged inside the bottom positioning seat 8. A trigger plate 21 is fixedly connected to one end of the telescopic rod 19 away from the bottom positioning seat 8. A second spring 20 is sleeved on the surface of the telescopic rod 19. The two ends of the second spring 20 are fixedly connected to the bottom positioning seat 8 and the trigger plate 21, respectively. A trigger switch 22 is fixedly connected to the top surface of the trigger plate 21.

[0048] With the above structural design, when the forklift forks are raised, if they are raised too high and squeeze the trigger plate 21, the telescopic rod 19 will slide upward inside the bottom positioning seat 8 and compress the second spring 20. If the trigger plate 21 moves too far, the trigger switch 22 at the upper end of the trigger plate 21 will cooperate with the bottom positioning seat 8 to squeeze and trigger an alarm.

Claims

1. A limit locking safety device for engineering machinery, comprising an adaptive adjustment structure (1), characterized in that; Also includes: The guide locking structure (2) is located at both ends of the adaptive adjustment structure (1) and includes a guide component and a limit component; The limit alarm structure (3) is located at the bottom of the adaptive adjustment structure (1); The adaptive adjustment structure (1) includes a top positioning seat (4), with pulleys (15) on both sides of the top positioning seat (4) and a trigger switch (22) at the bottom of the top positioning seat (4).

2. The engineering machinery limit locking safety device according to claim 1, characterized in that, The bottom surface of the top positioning seat (4) is hinged to a first extension arm (5), and the end of the first extension arm (5) away from the top positioning seat (4) is hinged to a side positioning frame (6). The surface of the side positioning frame (6) is hinged to a second extension arm (7), and the end of the second extension arm (7) away from the side positioning frame (6) is hinged to a bottom positioning seat (8).

3. The engineering machinery limit locking safety device according to claim 2, characterized in that, The bottom positioning seat (8) is symmetrically fixedly connected to a guide rod (9). The top positioning seat (4) is slidably disposed on the surface of the guide rod (9). The bottom positioning seat (8) is rotatably disposed to an adjusting screw (10). The top end of the adjusting screw (10) extends to the upper end of the top positioning seat (4). The top positioning seat (4) is threadedly connected to the adjusting screw (10). The top end of the adjusting screw (10) is fixedly connected to a knob (11).

4. The engineering machinery limit locking safety device according to claim 3, characterized in that, The side positioning frame (6) is fixedly connected to a frame (23), and a slide rod (12) is fixedly connected inside the frame (23). A first spring (13) is sleeved on the surface of the slide rod (12), and a shaft (14) is slidably arranged on the surface of the slide rod (12). A pulley (15) is fixedly connected to the surface of the shaft (14).

5. The engineering machinery limit locking safety device according to claim 4, characterized in that, A gear (18) is fixedly connected to the surface of the shaft (14), and a positioning rod (16) is fixedly connected to the inner side of the side positioning frame (6). A limiting tooth (17) is fixedly connected to the end of the positioning rod (16), and the limiting tooth (17) is inserted into the inside of the gear (18).

6. The engineering machinery limit locking safety device according to claim 5, characterized in that, The bottom positioning seat (8) is slidably provided with a telescopic rod (19). A trigger plate (21) is fixedly connected to one end of the telescopic rod (19) away from the bottom positioning seat (8). A second spring (20) is sleeved on the surface of the telescopic rod (19). The two ends of the second spring (20) are fixedly connected to the bottom positioning seat (8) and the trigger plate (21) respectively. A trigger switch (22) is fixedly connected to the top surface of the trigger plate (21).

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