Excavator boom lifting height limiting alarm

Abstract

The utility model discloses a kind of excavator big arm lifting height limiting alarm, comprising: excavator component, excavator component includes excavator small arm;Mounting assembly, mounting assembly includes tension alarm, height limiting chain, mounting frame, fixed hole, fixed plate, movable rod, spring and clamping block, tension alarm is installed in the lower surface side of excavator small arm, height limiting chain is connected inside tension alarm, mounting frame is fixed in the lower surface side of excavator small arm, four fixed holes are opened in the two sides of the front and rear of mounting frame, four fixed plates are fixed in the two sides of the front and rear of mounting frame, and movable rod is penetrated in the center of fixed plate, and movable rod is penetrated mounting frame, spring is penetrated in the outer surface of movable rod.The utility model has when the height of excavator exceeds limit, height limiting chain will be pulled out from tension alarm, trigger alarm, whole installation process is simple and convenient, without complex tool and professional skill, and it can be quickly reset advantage.

Description

Technical Field

[0001] This utility model relates to the field of excavator height limit technology, and in particular to an excavator boom lifting height limit alarm. Background Technology

[0002] Railway construction must be carried out within 30 meters of the existing red line, meaning the railway is being constructed near the existing line. There are strict requirements on the height of the equipment, requiring that the highest point of the equipment cannot exceed the distance from the construction location to the edge of the existing red line, and that protective cables for the train tracks are distributed throughout the area near the existing line.

[0003] When excavators are working, the bucket can easily exceed the set height if not carefully monitored. Furthermore, the alarm system installed on the excavator is difficult to operate. After one alarm is triggered, it needs to be reset before it can be triggered again, which not only reduces work efficiency but also increases the workload of the operator.

[0004] Therefore, there is a need for a height limit alarm that can be installed quickly and reset rapidly. Utility Model Content

[0005] The purpose of this utility model is to provide an excavator boom lifting height limit alarm to solve the problems mentioned in the background art. Existing domestic engineering projects are limited by the working scenario. When the excavator is working, the bucket of the excavator will exceed the predetermined height if not careful. In addition, the alarm is difficult to operate when installed on the excavator. After one end alarms, it needs to be reset before it can alarm again. This not only reduces work efficiency but also increases the workload of the operator.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to an excavator boom lifting height limit alarm, comprising:

[0008] An excavator assembly, the excavator assembly including an excavator boom;

[0009] The mounting assembly includes a tension alarm, a height limiting chain, a mounting frame, fixing holes, fixing plates, a movable rod, a spring, and a locking block. The tension alarm is installed on one side of the lower surface of the excavator boom. The height limiting chain is connected inside the tension alarm. The mounting frame is fixed to one side of the lower surface of the excavator boom. Four fixing holes are opened on both sides of the front and rear surfaces of the mounting frame. Four fixing plates are fixed on both sides of the front and rear surfaces of the mounting frame. The movable rod passes through the center of the fixing plate and through the mounting frame. The spring passes through the outer surface of the movable rod. The locking block is a right-angled trapezoid and is fixed to one end of the movable rod.

[0010] Furthermore, the excavator assembly also includes an excavator boom, a base plate, and a bucket. The excavator boom is movably mounted on one side of the excavator arm, the base plate is mounted on the lower surface of the excavator boom, and the bucket is rotatably mounted on the other end of the excavator arm.

[0011] Furthermore, the mounting assembly also includes a mounting plate, electric push rods, and a connecting plate. The mounting plate is fixed to one side of the front and rear sides of the mounting frame, the electric push rods are fixedly mounted on one side of the mounting plate, the connecting plate is fixed to the output ends of the two electric push rods, and the height limiting chain passes through the middle of the connecting plate.

[0012] Furthermore, a limit plate is fixed to the lower surface of the excavator boom, and a limit plate is also fixed to the lower surface of the excavator arm, with the height limiting chain passing through the limit plate.

[0013] Furthermore, it also includes a winding assembly, which includes a winding frame, a square slot, a rotating shaft, and a coil spring. The winding frame is fixed to one side of the lower surface of the base plate, the square slot is opened on one side of the outer surface of the winding frame, the rotating shaft rotates through the inside of the winding frame, and the coil spring is fixedly installed at both ends of the rotating shaft and located inside the winding frame.

[0014] Furthermore, one end of the height limiting chain is connected to one side of the tension alarm, and the other end is wound around the outer surface of the rotating shaft.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] I. This utility model, through its excavator assembly and installation assembly, allows for easy installation of the tension alarm. The operator lowers the excavator boom to its lowest position for convenient operation. The operator then presses the tension alarm into the installation frame. When the tension alarm contacts the locking block, the inclined surface of the locking block pushes the movable rod outwards, compressing the spring. Simultaneously, the locking block moves outwards, allowing the tension alarm to enter the installation frame. Once the tension alarm is fully installed, the locking block and the tension alarm become misaligned. The spring quickly returns to its original shape, causing the movable rod to move inwards, and bringing the upper surface of the locking block into contact with the lower surface of the tension alarm. To install the height limiter, simply place it in the mounting frame. When the excavator boom height exceeds the limit, the height limiter chain will be pulled out of the height limiter, triggering an audible and visual alarm. Upon receiving the alarm, the operator lowers the excavator boom. Then, via an external controller, the electric push rod shortens, moving the connecting plate towards the height limiter, re-inserting one end of the height limiter chain into the alarm to end the alarm and prepare for the next alarm. When the excavator height exceeds the limit, the height limiter chain will be pulled out of the alarm, triggering the alarm again. The entire installation process is simple and convenient, requiring no complex tools or professional skills, and can be quickly reset.

[0017] II. Based on the first beneficial effect, the designed rewinding assembly prevents the height-limiting chain from dragging down and affecting operation when the excavator boom is low. The other end of the chain is rewound to the outer surface of the rotating shaft. When the excavator boom is high, the chain is pulled out from the outer surface of the rotating shaft, the coil spring tightens, and the chain is completely released. When the chain reaches its maximum length, a tension alarm sounds. When the excavator boom is low, the coil spring returns to its original shape and rewinds the chain back to the outer surface of the rotating shaft, preventing dragging. This design of rewinding and releasing the height-limiting chain on the outer surface of the rotating shaft not only improves the excavator's operating efficiency and safety but also extends its service life and enhances its adaptability to different working environments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the excavator components of this utility model;

[0020] Figure 2 This is a side view of the excavator component of this utility model;

[0021] Figure 3 This is a structural diagram of the mounting components of this utility model;

[0022] Figure 4 This utility model Figure 3 A magnified view of point A of the installation component;

[0023] Figure 5 This utility model Figure 1 Enlarged view of section B of the winding component.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 11. Excavator boom; 12. Excavator arm; 13. Floor plate; 14. Bucket;

[0026] 21. Tension alarm; 211. Height limiting chain; 212. Limiting plate; 22. Mounting frame; 221. Fixing hole; 23. Fixing plate; 24. Movable rod; 25. Spring; 26. Locking block; 27. Mounting plate; 28. Electric push rod; 29. ​​Connecting plate;

[0027] 31. Rewind frame; 311. Square groove; 32. Rotating shaft; 33. Coil spring. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0032] Please see Figures 1-5 This embodiment is an excavator boom lifting height limit alarm, including an excavator assembly, which includes an excavator boom 12, an excavator boom 11, a base plate 13 and a bucket 14. The excavator boom 11 is movably mounted on one side of the excavator boom 12, the base plate 13 is mounted on the lower surface of the excavator boom 11, and the bucket 14 is rotatably mounted on the other end of the excavator boom 12.

[0033] In this embodiment of the utility model, one end of the excavator boom 12 is connected to the excavator arm 11, and the other end is equipped with the bucket 14.

[0034] Furthermore, this utility model also includes an installation assembly, which includes a tension alarm 21, a height limiting chain 211, an installation frame 22, fixing holes 221, fixing plates 23, a movable rod 24, a spring 25, and a locking block 26. The tension alarm 21 is installed on one side of the lower surface of the excavator boom 12. The height limiting chain 211 is connected inside the tension alarm 21. The installation frame 22 is fixed on one side of the lower surface of the excavator boom 12. Four fixing holes 221 are opened on both sides of the front and rear sides of the installation frame 22. Four fixing plates 23 are fixed on both sides of the front and rear sides of the installation frame 22. The movable rod 24 passes through the center of the fixing plate 23 and passes through the installation frame 22. The spring 25 passes through the outer surface of the movable rod 24. The locking block 26 is a right-angled trapezoid and is fixed to one end of the movable rod 24.

[0035] Preferably, in this embodiment, the tension alarm 21 is internally connected to a height-limiting chain 211. When the operating height of the excavator exceeds a preset limit, the height-limiting chain 211 will be pulled out of the tension alarm 21, triggering the alarm 21 to emit an audible and visual alarm, reminding the operator to lower the height of the excavator boom, thereby avoiding potential danger. The movable rod 24, spring 25, and locking block 26 constitute the automatic locking mechanism of the tension alarm 21. When the tension alarm 21 contacts the locking block 26, the movable rod 24 moves outward under the action of the inclined plane and compresses the spring 25, allowing the tension alarm 21 to smoothly enter the mounting frame 22. Subsequently, the locking block 26 is misaligned with the tension alarm 21, the spring 25 quickly recovers its deformation, driving the movable rod 24 to move inward, so that the upper surface of the locking block 26 contacts the lower surface of the tension alarm 21, achieving automatic locking.

[0036] Furthermore, the mounting assembly also includes a mounting plate 27, an electric push rod 28, and a connecting plate 29. The mounting plate 27 is fixed to one side of the front and rear sides of the mounting frame 22. The electric push rod 28 is fixedly mounted on one side of the mounting plate 27. The connecting plate 29 is fixed to the output ends of the two electric push rods 28, and the height limiting chain 211 passes through the middle of the connecting plate 29. The lower surface of the excavator boom 11 is fixed with a limit plate 212, and the lower surface of the excavator arm 12 is also fixed with a limit plate 212, and the height limiting chain 211 passes through the limit plate 212.

[0037] When the electric push rod 28 receives the command to lower the height, the electric push rod 28 shortens and inserts one end of the height limiting chain 211 back into the tension alarm 21 through the connecting plate 29, ending the alarm and facilitating the next alarm, making the reset operation more convenient and improving work efficiency.

[0038] During the installation of the tension alarm 21, the operator lowers the excavator boom 12 to its lowest position for easy operation. The operator then presses the tension alarm 21 into the mounting frame 22. When the tension alarm 21 contacts the locking block 26, the inclined surface of the locking block 26 pushes the movable rod 24 outwards. At this time, the spring 25 is compressed, and the locking block 26 moves outwards simultaneously, allowing the tension alarm 21 to enter the mounting frame 22. Once the tension alarm 21 is fully installed in the mounting frame 22, the locking block 26 and the tension alarm 21 become misaligned, and the spring 25 quickly returns to its original shape, causing the movable rod 24 to move inwards. Move the block 26 so that its upper surface contacts the lower surface of the tension alarm 21, and fix the tension alarm 21 in the mounting frame 22 to complete the installation. When the height of the excavator boom 12 exceeds the specified limit, the height limit chain 211 will be pulled out of the tension alarm 21. At this time, the tension alarm 21 will sound an audible and visual alarm. When the operator receives the alarm, he will lower the height of the excavator boom 11. Then, through the external controller, the controller will drive the electric push rod 28 to shorten and the connecting plate 29 to move toward the tension alarm 21. One end of the height limit chain 211 will be inserted back into the tension alarm 21 to end the alarm and make it easier for the next alarm.

[0039] In this step, when the excavator height exceeds the limit, the height limit chain 211 will be pulled out from the tension alarm 21, triggering an alarm. The entire installation process is simple and convenient, requiring no complicated tools or professional skills, and can be quickly reset.

[0040] Please see Figures 1-5 This embodiment is based on embodiment 1 above, and further includes a winding component;

[0041] The winding assembly includes a winding frame 31, a square groove 311, a rotating shaft 32, and a coil spring 33. The winding frame 31 is fixed to one side of the lower surface of the base plate 13. The square groove 311 is opened on one side of the outer surface of the winding frame 31. The rotating shaft 32 rotates through the inside of the winding frame 31. The coil spring 33 is fixedly installed at both ends of the rotating shaft 32 and located inside the winding frame 31. One end of the height limiting chain 211 is connected to one side of the tension alarm 21, and the other end is wound on the outer surface of the rotating shaft 32.

[0042] Furthermore, the rotating shaft 32 provided in this embodiment guides and supports the winding and unwinding of the height limiting chain 211. The main function of the coil spring 33 is to automatically wind up the height limiting chain 211 when the boom height is low to prevent it from dragging on the ground and affecting operation. When the boom height is increased, the coil spring 33 gradually releases the height limiting chain 211 until it reaches a predetermined length to trigger the tension alarm 21. The automatic winding and unwinding mechanism greatly improves the ease of operation and safety of the excavator.

[0043] When the height of the excavator boom 11 is low, in order to prevent the height limiting chain 211 from being dragged down and affecting operation, the other end of the height limiting chain 211 is wound around the outer surface of the rotating shaft 32. When the height of the excavator boom 11 is high, the height limiting chain 211 will be pulled out from the outer surface of the rotating shaft 32, the coil spring 33 will tighten, and the height limiting chain 211 will be completely released. When the limit length of the height limiting chain 211 is reached, the tension alarm 21 will sound an alarm. When the height of the excavator boom 11 is low, the coil spring 33 will return to its original deformation and wind the height limiting chain 211 around the outer surface of the rotating shaft 32 to prevent the height limiting chain 211 from being dragged.

[0044] This step, through the design of winding and releasing the height-limiting chain 211 on the outer surface of the rotating shaft 32, not only improves the operating efficiency and safety of the excavator, but also extends the service life of the machine and enhances the excavator's adaptability to different working environments.

[0045] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A limit alarm for the lifting height of an excavator boom, characterized in that, include: An excavator assembly, the excavator assembly including an excavator boom (12); The mounting assembly includes a tension alarm (21), a height limiting chain (211), a mounting frame (22), fixing holes (221), fixing plates (23), a movable rod (24), a spring (25), and a locking block (26). The tension alarm (21) is installed on one side of the lower surface of the excavator boom (12). The height limiting chain (211) is connected inside the tension alarm (21). The mounting frame (22) is fixed on one side of the lower surface of the excavator boom (12). Four fixing holes (221) are opened on both sides of the front and rear sides of the mounting frame (22). Four fixing plates (23) are fixed on both sides of the front and rear sides of the mounting frame (22). The movable rod (24) passes through the center of the fixing plate (23) and passes through the mounting frame (22). The spring (25) passes through the outer surface of the movable rod (24). The locking block (26) is a right trapezoid and is fixed to one end of the movable rod (24).

2. The excavator boom lifting height limit alarm device according to claim 1, characterized in that, The excavator assembly also includes an excavator boom (11), a base plate (13), and a bucket (14); The excavator boom (11) is movably mounted on one side of the excavator arm (12), the base plate (13) is mounted on the lower surface of the excavator boom (11), and the bucket (14) is rotatably mounted on the other end of the excavator arm (12).

3. The excavator boom lifting height limit alarm device according to claim 2, characterized in that, The mounting assembly also includes a mounting plate (27), an electric push rod (28), and a connecting plate (29); The mounting plate (27) is fixed on one side of the front and rear sides of the mounting frame (22), the electric push rod (28) is fixedly installed on one side of the mounting plate (27), the connecting plate (29) is fixed on the output end of the two electric push rods (28), and the height limiting chain (211) passes through the middle of the connecting plate (29).

4. The excavator boom lifting height limit alarm device according to claim 2, characterized in that, A limit plate (212) is fixed to the lower surface of the excavator boom (11), and a limit plate (212) is also fixed to the lower surface of the excavator arm (12), and a height limiting chain (211) passes through the limit plate (212).

5. The excavator boom lifting height limit alarm device according to claim 2, characterized in that, It also includes a winding assembly, which includes a winding frame (31), a square slot (311), a rotating shaft (32), and a coil spring (33); The winding frame (31) is fixed to one side of the lower surface of the base plate (13), the square groove (311) is opened on one side of the outer surface of the winding frame (31), the rotating shaft (32) rotates through the inside of the winding frame (31), and the coil spring (33) is fixedly installed at both ends of the rotating shaft (32) and located inside the winding frame (31).

6. The excavator boom lifting height limit alarm device according to claim 5, characterized in that, One end of the height limiting chain (211) is connected to one side of the tension alarm (21), and the other end is wound around the outer surface of the rotating shaft (32).

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