Limiting sound-light alarm device for extension of crane jib

Abstract

The invention discloses a crane boom extension limiting sound-light alarm device which comprises a base mounted on a crane, a rotating seat is arranged on the base, a rotating table is arranged on the rotating seat, a rotating arm with one end rotationally connected with the rotating table is arranged on the rotating table, and an extension arm in sliding connection is arranged in the rotating arm; the light source assembly is arranged on the rotating arm and matched with the extension arm, the light source assembly comprises a fixed seat arranged on the rotating arm, and a rotating shaft is rotationally connected to the fixed seat. And when the whole body extends to the longest length and a heavy object is hoisted, the gravity center of the whole body is easy to shift, so that a crane is turned over, danger is caused, and property loss is caused at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of crane booms, in particular to a crane boom extension limit sound and light alarm device. Background Art

[0002] Crane is the common name for crane. Crane is a kind of lifting machinery. It is a machine that performs cyclic and intermittent motion. It is a lifting and handling machinery widely used in ports, workshops, power plants, construction sites and other places. Crane is the common name for crane. It is a kind of lifting machinery. Usually, cranes are mainly truck cranes, crawler cranes and tire cranes. The use of cranes is in lifting equipment, emergency, lifting, machinery and rescue. The boom is a very important device on the crane.

[0003] Currently, the telescopic mechanism of the boom changes the length of the boom, completing the telescopic movement. Multi-section box-shaped booms use this mechanism to change their length to adjust the lifting height and amplitude. This is an indispensable mechanism for cranes with telescopic box-shaped booms. However, when the boom is extended to its maximum length and lifting a heavy object, the center of gravity of the entire boom can easily shift, causing the crane to overturn, resulting in danger and property loss. To address this problem, we propose a crane boom extension limit sound and light alarm device. Summary of the Invention

[0004] The purpose of the present invention is to provide a crane boom extension limit sound and light alarm device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a crane boom extension limit sound and light alarm device, comprising a base mounted on the crane, a rotating seat being provided on the base, a rotating platform being provided on the rotating seat, a rotating arm having one end rotatably connected thereto, and an extension arm being slidably connected in the rotating arm; a light source assembly, the light source assembly being provided on the rotating arm and cooperating with the extension arm, comprising a fixed seat provided on the rotating arm, a rotating shaft being rotatably connected to the fixed seat, a flip rod having one end fixedly connected thereto, and the flip rod being remotely controlled. A light source alarm is provided on one end away from the rotating shaft, and the light source assembly is used to emit a flash alarm when the extension arm is extended to the limit position; a sound source assembly is provided on the rotating arm and connected to the light source assembly, which includes a sound source alarm provided on the rotating arm and fixedly connected thereto, and the sound source assembly is used to emit a sound alarm when the extension arm is extended to the limit position, which solves the problem that when the boom is working, when the whole is extended to the longest length and heavy objects are lifted, the overall center of gravity is easily shifted, which causes the crane to overturn, causing danger and property loss.

[0006] Preferably, the light source assembly also includes a sliding block arranged in the rotating rod and away from one end of the rotating axis, the sliding block is slidably connected to the end of the inner wall of the flip rod, and multiple groups of straight tension springs fixedly connected to the inside of the flip rod are fixedly connected to the sliding block, and the sliding block is fixedly connected to a bending block at one end outside the flip rod, and the rotating arm is fixedly connected to a connecting frame at the end away from the rotating table, and the connecting frame is fixedly connected to a limit block adapted to the end of the bending block, a trigger mechanism adapted to the limit block and used to push the bending block is provided in the extension arm, and a rotating mechanism connected to the rotating arm is provided on the flip rod.

[0007] Preferably, the trigger mechanism includes a lifting block arranged in the extension arm, a bottom groove slidingly connected to the lifting block is opened in the extension arm, a top groove is also opened above the bottom groove, the top groove and the bottom groove are connected to each other and cross-arranged, the bottom end of the bottom groove is fixedly connected to a lifting spring fixedly connected to the lifting block, the top of the lifting block is fixedly connected to a pushing block adapted to the top groove, the pushing block is bent, and the end is adapted to the inner wall of the limit block.

[0008] Preferably, the rotating mechanism includes an arc-shaped shaft arranged on the extension arm and fixedly connected thereto at one end, the other end of the arc-shaped shaft is slidably connected to an arc-shaped tube fixedly connected to the rotating arm, an arc-shaped tension spring is provided on the outside of the arc-shaped shaft and the arc-shaped tube, a vertical plate is fixedly connected to the rotating arm, a first pressing block is fixedly connected to the vertical plate, a control switch electrically connected to the light source alarm is installed on the flip rod, and the position of the control switch after the flip rod is flipped is adapted to the first pressing block.

[0009] Preferably, the sound source component includes two groups of gears respectively arranged at both ends of the rotating shaft and fixedly connected thereto, the two groups of gears are meshedly connected with racks arranged on the rotating arm, the rotating arm is provided with movable grooves for sliding connection of the two groups of racks, the two groups of racks are fixedly connected with a movable plate at one end away from the gear, and a second pressing block is provided on the side of the movable plate close to the sound source alarm, and the position of the second pressing block corresponds to the switch position of the sound source alarm.

[0010] Preferably, an inclined surface is provided at the bending part of the pushing block, and the bottom end of the inclined surface is flush with the top surface of the extension arm after the pushing block extends out of the top groove. By providing an inclined surface at the bending part of the pushing block, the pushing block can be retracted into the extension arm through the squeezing of the extension arm by the rotating arm after being extended.

[0011] Preferably, the sound source alarm is provided with a protective box fixedly connected to the top surface of the rotating arm, which helps the protective box to protect the sound source alarm and prevent damage.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention solves the problem that when the boom is working, when the whole arm is extended to the longest length and lifts heavy objects, the overall center of gravity is easily shifted, which may cause the crane to overturn, causing danger and property loss, through the cooperation of the light source component and the sound source component. When the crane is working, the extension arm gradually extends from the rotating arm. When it is extended to the length limit, the light source component is triggered to operate, and the light source alarm immediately sounds an alarm. At the same time, the light source component drives the sound source component to operate, and finally drives the sound source alarm to sound an alarm, so that the operator can discover and stop extending the arm in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the coordination between the rotating arm and the extension arm structure of the present invention; Figure 3 for Figure 2 Enlarged view of area A in the middle; Figure 4 for Figure 2 Enlarged view of area B in the middle; Figure 5 This is a schematic diagram of the internal structure of the extension arm of the present invention; Figure 6 This is a schematic diagram of the structure coordination of the light source assembly and the sound source assembly of the present invention; Figure 7 for Figure 6 Enlarged view of area C in the middle; Figure 8 for Figure 6 Enlarged view of area D in the middle; Figure 9 This is a schematic diagram of the internal structure of the flip rod of the present invention; Figure 10 It is a schematic diagram of the overall structure of the rotating arm of the present invention.

[0014] In the figure: 1. base; 2. rotating base; 3. rotating table; 4. rotating arm; 5. extension arm; 6. light source assembly; 7. fixed base; 8. rotating shaft; 9. flip rod; 10. light source alarm; 11. sound source assembly; 12. sound source alarm; 13. sliding block; 14. straight tension spring; 15. bending block; 16. connecting frame; 17. limit block; 18. trigger mechanism; 19. rotating mechanism; 20. lifting block; 21. bottom groove; 22. top groove; 23. lifting spring; 24. pushing block; 25. arc shaft; 26. arc tube; 27. arc tension spring; 28. vertical plate; 29. first pressing block; 30. control switch; 31. gear; 32. rack; 33. moving groove; 34. moving plate; 35. protective box; 36. second pressing block. DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0016] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0017] See also Figure 1-10 The present invention provides a technical solution: a crane boom extension limit sound and light alarm device, comprising a base 1 installed on the crane, a rotating base 2 is provided on the base 1, a rotating platform 3 is provided on the rotating base 2, a rotating arm 4 with one end rotatably connected to the rotating arm 4 is provided on the rotating platform 3, an extension arm 5 slidably connected is provided in the rotating arm 4; a light source assembly 6, the light source assembly 6 is arranged on the rotating arm 4 and cooperates with the extension arm 5, and includes a fixed base 7 arranged on the rotating arm 4, a rotating shaft 8 is rotatably connected on the fixed base 7, a flip rod 9 with one end fixedly connected to the rotating shaft 8 is provided on the rotating shaft 8, a light source alarm 10 is provided on the end of the flip rod 9 away from the rotating shaft 8, the light source assembly 6 is used to emit a flash alarm when the extension arm 5 is extended to the limit position; a sound source assembly 11, the sound source assembly 11 is arranged on the rotating arm 4 and connected to the light source assembly 6, and includes a sound source alarm 12 arranged on the rotating arm 4 and fixedly connected to the rotating arm 4, the sound source assembly 11 is used to emit a sound alarm when the extension arm 5 is extended to the limit position.

[0018] As shown in the figure, the light source assembly 6 also includes a sliding block 13 arranged in the rotating rod and away from one end of the rotating shaft 8. The sliding block 13 is slidably connected to the end of the inner wall of the flip rod 9. A plurality of straight tension springs 14 fixedly connected to the sliding block 13 are fixedly connected to the inside of the flip rod 9, and the end of the sliding block 13 located outside the flip rod 9 is fixedly connected to a bending block 15. A connecting frame 16 is fixedly connected to the end of the rotating arm 4 away from the rotating table 3. A limit block 17 adapted to the end of the bending block 15 is fixedly connected to the connecting frame 16. A trigger mechanism 18 adapted to the limit block 17 and used to push the bending block 15 is provided in the extension arm 5. A rotating mechanism 19 connected to the rotating arm 4 is provided on the flip rod 9. Among them, the trigger mechanism 18 includes a lifting block 20 arranged in the extension arm 5, and a bottom groove 21 is provided in the extension arm 5 to be slidably connected to the lifting block 20. A top groove 22 is also provided above the bottom groove 21. The top groove 22 and the bottom groove 21 are interconnected and cross-arranged. The bottom end of the bottom groove 21 is fixedly connected to a lifting spring 23 fixedly connected to the lifting block 20, and the top of the lifting block 20 is fixedly connected to a push block 24 adapted to the top groove 22. The push block 24 is bent, and the end is adapted to the inner wall of the limit block 17. The rotating mechanism 19 includes an arc-shaped shaft provided on the extension arm 5 and fixedly connected to it at one end. 25. The other end of the arc-shaped shaft 25 is slidably connected to an arc-shaped tube 26 fixedly connected to the rotating arm 4. An arc-shaped tension spring 27 is sleeved on the outside of the arc-shaped shaft 25 and the arc-shaped tube 26. A vertical plate 28 is fixedly connected to the rotating arm 4. A first pressing block 29 is fixedly connected to the vertical plate 28. A control switch 30 electrically connected to the light source alarm is installed on the flip rod 9. The position of the control switch 30 after the flip rod 9 is flipped is adapted to the first pressing block 29. In addition, an inclined surface is provided at the bending part of the push block 24. After the push block 24 extends out of the top groove 22, the bottom end of the inclined surface is flush with the top surface of the extension arm 5.

[0019] As shown in the figure, the sound source component 11 includes two groups of gears 31 respectively arranged at both ends of the rotating shaft 8 and fixedly connected thereto, and the two groups of gears 31 are meshedly connected with a rack 32 arranged on the rotating arm 4, and the rotating arm 4 is provided with a movable groove 33 in which the two groups of racks 32 are slidably connected. The two groups of racks 32 are fixedly connected to a movable plate 34 at one end away from the gear 31, and a second pressing block 36 is provided on the side of the movable plate 34 close to the sound source alarm, and the position of the second pressing block 36 corresponds to the switch position of the sound source alarm. In addition, the sound source alarm is provided with a protective box 35 fixedly connected to the top surface of the rotating arm 4.

[0020] In a specific embodiment, when the crane is working, the extension arm 5 gradually extends from the rotating arm 4. When it is extended to the length limit, when the top groove 22 extends to the outside of the rotating arm 4, the lifting spring 23 immediately bounces upward and lifts the lifting block 20 upward in the bottom groove 21. The lifting block 20 simultaneously lifts the upper push block 24, and the push block 24 rises from the top groove 22. When the extension arm 5 continues to extend, it drives the already extended push block 24 to move and gradually moves toward the inner wall of the limit block 17, and pushes out the bending block 15 originally in the limit block 17. At this time, the bending block 15 drives the sliding block 13 to slide outward in the flip rod 9, and the straight tension spring 14 is now Stretch until the bending block 15 is completely moved out of the limit block 17. At this time, the flip rod 9 is free from the restriction, the arc-shaped tension spring 27 retracts, and pulls the flip rod 9. At the same time, the arc shaft 25 slides into the arc tube 26, and the flip rod 9 is driven to flip with the rotation axis 8 as the center until the flip rod 9 is flipped to a perpendicular state with the rotating arm 4. At this time, the control switch 30 on the flip rod 9 contacts the first pressing block 29, and the first pressing block 29 presses the control switch 30. Since the control switch 30 is electrically connected to the light source alarm 10, the light source alarm immediately emits a warning light, and the flip rod 9 is in a vertical state at this time, which is easier for the operator in the cab to see; When the rotating shaft 8 rotates, it drives the gear 31 fixed at both ends to rotate. Through the meshing connection between the gear 31 and the rack 32, the gear 31 pushes the rack 32 to slide on the movable groove 33 on the rotating arm 4 when it rotates. The two sets of racks 32 are pushed toward the protective box 35 at the same time. The two sets of racks 32 cooperate and drive the movable plate to move until the movable plate 34 moves into the protective box 35. When the light source alarm emits a warning light, the second pressing block 36 on the movable plate 34 turns on the sound source alarm at the same time. The sound source alarm also emits a sound alarm, which cooperates with the light source alarm and attracts the attention of the operator. After that, the extension arm 5 will not be extended, thereby improving overall safety.

[0021] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0022] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A crane boom extension limit sound and light alarm device, characterized in that: include: A base (1) mounted on a crane, wherein the base (1) is provided with a rotating seat (2), the rotating seat (2) is provided with a rotating platform (3), the rotating platform (3) is provided with a rotating arm (4) having one end rotatably connected thereto, and the rotating arm (4) is provided with an extension arm (5) in a sliding connection; A light source assembly (6), the light source assembly (6) is arranged on the rotating arm (4) and cooperates with the extension arm (5), and comprises a fixing seat (7) arranged on the rotating arm (4), a rotating shaft (8) being rotatably connected to the fixing seat (7), a flip rod (9) having one end fixedly connected thereto being provided on the rotating shaft (8), a light source alarm (10) being provided on the end of the flip rod (9) away from the rotating shaft (8), and the light source assembly (6) is used to emit a flashing alarm when the extension arm (5) is extended to a limit position; A sound source component (11), the sound source component (11) being arranged on the rotating arm (4) and connected to the light source component (6), comprising a sound source alarm (12) arranged on the rotating arm (4) and fixedly connected thereto, the sound source component (11) being used to emit an audible alarm when the extension arm (5) is extended to a limit position.

2. The crane boom extension limit sound and light alarm device according to claim 1, characterized in that: The light source assembly (6) further comprises a sliding block (13) arranged in the rotating rod and away from one end of the rotating shaft (8), the sliding block (13) being slidably connected to the end of the inner wall of the flip rod (9), a plurality of groups of straight tension springs (14) fixedly connected to the inside of the flip rod (9) being fixedly connected to the sliding block (13), and a bending block (15) being fixedly connected to one end of the sliding block (13) located outside the flip rod (9), the rotating arm (4) being fixedly connected to a connecting frame (16) at one end away from the rotating table (3), the connecting frame (16) being fixedly connected to a limit block (17) matched with the end of the bending block (15), the extension arm (5) being provided with a trigger mechanism (18) matched with the limit block (17) and used to push the bending block (15), and the flip rod (9) being provided with a rotating mechanism (19) connected to the rotating arm (4).

3. The crane boom extension limit sound and light alarm device according to claim 2, characterized in that: The trigger mechanism (18) includes a lifting block (20) arranged in the extension arm (5), a bottom groove (21) slidably connected to the lifting block (20) is provided in the extension arm (5), and a top groove (22) is provided above the bottom groove (21), the top groove (22) and the bottom groove (21) are interconnected and cross-arranged, the bottom end of the bottom groove (21) is fixedly connected to a lifting spring (23) fixedly connected to the lifting block (20), and the top end of the lifting block (20) is fixedly connected to a pushing block (24) adapted to the top groove (22), the pushing block (24) is bent, and the end portion is adapted to the inner wall of the limit block (17).

4. The crane boom extension limit sound and light alarm device according to claim 3, characterized in that: The rotating mechanism (19) includes an arc-shaped shaft (25) provided on the extension arm (5) and fixedly connected to the extension arm (5) at one end, the other end of the arc-shaped shaft (25) is slidably connected to an arc-shaped tube (26) fixedly connected to the rotating arm (4), an arc-shaped tension spring (27) is provided on the outer surface of the arc-shaped shaft (25) and the arc-shaped tube (26), a vertical plate (28) is fixedly connected to the rotating arm (4), a first pressing block (29) is fixedly connected to the vertical plate (28), a control switch (30) electrically connected to the light source alarm is installed on the flip rod (9), and the control switch (30) is adapted to the first pressing block (29) at a position after the flip rod (9) is flipped.

5. The crane boom extension limit sound and light alarm device according to claim 4, characterized in that: The sound source component (11) includes two groups of gears (31) respectively arranged at both ends of the rotating shaft (8) and fixedly connected thereto, the two groups of gears (31) are meshedly connected with a rack (32) arranged on the rotating arm (4), the rotating arm (4) is provided with a movable groove (33) for sliding connection of the two groups of racks (32), one end of the two groups of racks (32) away from the gear (31) is fixedly connected to a movable plate (34), and a second pressing block (36) is provided on the side of the movable plate (34) close to the sound source alarm, and the position of the second pressing block (36) corresponds to the switch position of the sound source alarm.

6. The crane boom extension limit sound and light alarm device according to claim 3, characterized in that: An inclined surface is provided at the bending portion of the pushing block (24), and the bottom end of the inclined surface of the pushing block (24) is flush with the top surface of the extension arm (5) after the pushing block (24) extends out of the top groove (22).

7. The crane boom extension limit sound and light alarm device according to claim 1, characterized in that: The sound source alarm is provided with a protection box (35) fixedly connected to the top surface of the rotating arm (4).

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