Remotely controllable overload-preventing heavy hammer limiter

Abstract

The utility model provides a kind of overload-preventing type heavy hammer positioner of remote control, belong to the technical field of heavy hammer positioner, including positioning component, including positioner, the bottom of the positioner is provided with limit switch contact, the inside movable joint of limit switch contact has sling, the fixed connection of sling has ring, the bottom fixed connection of ring has arc heavy hammer, the inside fixed connection of arc heavy hammer has support column, the outside rotation connection of support column has rotating block, the inside of rotating block is provided with the limiting component for locking it. By the positioning component being set, the traditional split type heavy hammer is designed to be combined by fixed arc heavy hammer and rotatable rotating block, the limiting component consisting of pressing type arc pressing plate and first insert column etc., the quick installation of heavy hammer is realized, staff need not carry and tighten screw nut, only need to press knob to complete locking by limiting component, simplify operation process.

Description

Technical Field

[0001] This utility model belongs to the technical field of counterweight limiters, specifically relating to a remotely controllable anti-overload counterweight limiter. Background Technology

[0002] The counterweight limit switch consists of a housing, limit switch contacts, a lifting rope, and a counterweight. By attaching the counterweight to the wire rope of the hook, the weight of the counterweight pulls the limit switch contacts downward. When the hook rises to the preset limit position, the counterweight is raised, eliminating the downward pull on the limit switch contacts. The contacts then move under the action of internal springs and other reset mechanisms, changing from a normally open state to a normally closed state, thereby cutting off the crane's control power supply and forcing the crane motor to stop working, thus achieving limit protection.

[0003] In actual use, in order to ensure that the counterweight can move reliably with the hook, it is usually necessary to align two semi-circular hammer blocks with the crane's wire rope, then use two screws to pass through the semi-circular counterweights, and finally the operator must use tools to tighten the nuts on the screws in a high-altitude environment to complete the fixation. This is not only cumbersome to operate, but also takes a lot of time. Utility Model Content

[0004] The purpose of this invention is to provide a remotely controllable anti-overload hammer limiter, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A remotely controllable overload-resistant weight limiter includes a positioning component, comprising a limiter connected to a remote control receiver, a limit switch contact at the bottom of the limiter, a movably connected suspension rope inside the limit switch contact, a fixedly connected suspension ring to the suspension rope, an arc-shaped weight fixedly connected to the bottom of the suspension ring, a support column fixedly connected inside the arc-shaped weight, a rotating block rotatably connected to the outside of the support column, and a limit component for locking the rotating block inside; a stabilizing component including a vertical plate fixedly connected to the inner wall of the rotating block, a downward moving component on the bottom inner wall of the rotating block, and a pushing component inside the vertical plate.

[0006] In a preferred embodiment of this utility model, the limiting component includes an arc-shaped pressure plate slidably connected to the inner wall of the rotating block. A first insert post is fixedly connected to the top of the arc-shaped pressure plate, and the first insert post is slidably connected to the rotating block. A first guide rod is fixedly connected to the inner wall of the rotating block, and the arc-shaped pressure plate is slidably connected to the outside of the first guide rod. The bottom of the arc-shaped pressure plate is elastically connected to the rotating block via a first spring. A rotating column is rotatably connected inside the arc-shaped pressure plate, and the rotating column is movably connected to the rotating block. A knob is fixedly connected to the top of the rotating column, and a limiting ring is fixedly connected to the outside of the rotating column.

[0007] As a preferred embodiment of this utility model, a through hole is provided inside the arc-shaped hammer at the position corresponding to the first insertion post, and the first insertion post is slidably connected in the through hole.

[0008] As a preferred embodiment of this utility model, a circular groove is provided inside the arc-shaped pressure plate at the position corresponding to the limiting ring, and the limiting ring is movably connected in the circular groove.

[0009] In a preferred embodiment of this utility model, the lowering component includes an L-shaped rod fixedly connected to the bottom of the arc-shaped pressure plate, a stud fixedly connected to the bottom of the rotating column, and a threaded cylinder fixedly connected to the inner wall of the bottom of the rotating block, with the stud threadedly connected to the inside of the threaded cylinder.

[0010] In a preferred embodiment of this utility model, the pushing assembly includes a second guide rod fixedly connected to the outside of the upright plate, a slide plate slidably connected to the outside of the second guide rod, the slide plate being elastically connected to the upright plate via a second spring, a second insert being fixedly connected to the side of the slide plate near the upright plate, the second insert being slidably connected to the upright plate, and an inclined block being fixedly connected to the side of the second insert away from the upright plate, with the second guide rod contacting the inclined block.

[0011] In a preferred embodiment of this utility model, a through hole is provided inside the support column at the position corresponding to the second insertion column, and the second insertion column is slidably connected in the through hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By using a positioning component, the traditional split-type hammer is designed to be composed of a fixed arc-shaped hammer and a rotatable rotating block. The limiting component, consisting of a press-type arc-shaped pressure plate and a first insert, enables the hammer to be installed quickly. Workers do not need to carry or tighten screws and nuts; they only need to press the knob to lock it through the limiting component. This simplifies the operation process, significantly reduces installation time and labor intensity, and effectively reduces the safety risks of working at height.

[0013] 2. With the help of the stabilizing components, after the rotating block rotates to its maximum angle, the engagement of the stud and the threaded cylinder facilitates the downward movement of the block after the arc-shaped pressure plate is pressed down. This also facilitates the L-shaped rod pressing the inclined block to move it, and allows the second insert to slide into the through hole in the support column. Furthermore, it allows the rotating block in the open state to be locked, preventing it from shaking freely. This provides a stable operating condition for workers at height, making it easier to place the arc-shaped weight on the target position of the wire rope, improving the convenience of installation and optimizing the overall installation experience. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the 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. Among them: Figure 1 This is a schematic diagram of the overall front structure of this utility model; Figure 2 This is a schematic diagram showing the positional relationship of the arc-shaped weight of this utility model; Figure 3 This is a schematic diagram showing the positional relationship of the support columns of this utility model; Figure 4 This is a schematic diagram of the overall structure of the limiting component of this utility model; Figure 5 This is a schematic diagram showing the positional relationship of the limiting ring of this utility model; Figure 6 This is a schematic diagram of the overall structure of the downward moving component of this utility model; Figure 7 This is a schematic diagram of the overall structure of the pushing component of this utility model.

[0015] In the diagram: 10. Limit switch; 11. Limit switch contact; 12. Lifting rope; 13. Lifting ring; 14. Arc-shaped counterweight; 15. Support column; 16. Rotating block; 17. Limiting assembly; 171. Arc-shaped pressure plate; 172. First insert post; 173. First guide rod; 174. First spring; 175. Rotating column; 176. Knob; 177. Limiting ring; 20. Vertical plate; 21. Lowering assembly; 211. L-shaped rod; 212. Stud; 213. Threaded cylinder; 22. Pushing assembly; 221. Second guide rod; 222. Slide plate; 223. Second spring; 224. Second insert post; 225. Inclined block. Detailed Implementation

[0016] 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.

[0017] Example 1 Reference Figures 1-5 This is the first embodiment of the present invention. This embodiment provides a remotely controllable anti-overload hammer limiter, including a positioning component, including a limiter 10 connected to a remote control receiver. The start and stop of the crane can be controlled by the remote control receiver. The back of the limiter 10 is provided with a limiting structure composed of a U-shaped screw, a clamping block and a nut, which facilitates the installation of the limiter 10 on the crane. The bottom of the limiter 10 is provided with a limit switch contact 11. A lifting rope 12 is movably connected inside the limit switch contact 11. A lifting ring 13 is fixedly connected to the lifting rope 12. An arc-shaped hammer 14 is fixedly connected to the bottom of the lifting ring 13. A support column 15 is fixedly connected inside the arc-shaped hammer 14. A rotating block 16 is rotatably connected to the outside of the support column 15. A limit component 17 for locking the rotating block 16 is provided inside the rotating block 16.

[0018] Furthermore, the limiting assembly 17 includes an arc-shaped pressure plate 171 slidably connected to the inner wall of the rotating block 16. A first insert post 172 is fixedly connected to the top of the arc-shaped pressure plate 171, and the first insert post 172 is slidably connected to the rotating block 16. A first guide rod 173 is fixedly connected to the inner wall of the rotating block 16. The arc-shaped pressure plate 171 is slidably connected to the outside of the first guide rod 173. The bottom of the arc-shaped pressure plate 171 is elastically connected to the rotating block 16 via a first spring 174. A rotating post 175 is rotatably connected inside the arc-shaped pressure plate 171, and the rotating post 175 is movably connected to the rotating block 16. A knob 176 is fixedly connected to the top of the rotating column 175, and a limit ring 177 is fixedly connected to the outside of the rotating column 175. Pressing the knob 176 down causes the rotating column 175 and the limit ring 177 to move down. The limit ring 177 presses the arc-shaped pressure plate 171 so that it slides along the first guide rod 173 and compresses the first spring 174, thereby causing the first insert 172 to move down. After the arc-shaped weight 14 and the rotating block 16 are closed, the knob 176 is released. Under the restoring force of the first spring 174, the arc-shaped pressure plate 171 moves up and pushes the first insert 172 into the through hole of the arc-shaped weight 14, thus completing the locking.

[0019] The arc-shaped hammer 14 has a through hole at the position corresponding to the first insert 172, and the first insert 172 is slidably connected in the through hole. When the rotating block 16 rotates to fully close with the arc-shaped hammer 14, the first insert 172 is precisely aligned and inserted into the through hole under the drive of the arc-shaped pressure plate 171, realizing the mechanical interlock between the rotating block 16 and the arc-shaped hammer 14.

[0020] The arc-shaped pressure plate 171 has a circular groove at the position corresponding to the limiting ring 177, and the limiting ring 177 is movably connected in the circular groove. The circular groove provides the limiting ring 177 with a space for movement. When the knob 176 is pressed or rotated, the rotating column 175 drives the limiting ring 177 to move or rotate in the circular groove, thereby transmitting the operating force to the arc-shaped pressure plate 171 and controlling its up and down sliding.

[0021] In use, by passing the lifting rope 12 through the limit switch contact 11 and connecting it to the lifting ring 13, the limiter 10 is installed on the crane. The arc-shaped weight 14 is moved to the vicinity of the wire rope of the hook. By pressing the knob 176 and rotating the rotating block 16 so that the end away from the support column 15 contacts the arc-shaped weight 14, the arc-shaped weight 14 and the rotating block 16 are closed. When the knob 176 is pressed, the arc-shaped pressure plate 171 compresses the first spring 174 under the cooperation of the limit ring 177, causing the first insert 172 to move down. When the arc-shaped weight 14 and the rotating block 16 are closed, by releasing the knob 176, the arc-shaped pressure plate 171 returns to its original position under the elastic action of the first spring 174, so that the first insert 172 slides in the through hole opened inside the arc-shaped weight 14, thereby completing the rapid limit of the rotating block 16 and realizing the rapid fixation of the weight.

[0022] Example 2 Reference Figures 6-7 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a stabilizing component, which includes a vertical plate 20 fixedly connected to the inner wall of the rotating block 16. A downward moving component 21 is provided on the bottom inner wall of the rotating block 16, and a pushing component 22 is provided inside the vertical plate 20.

[0023] Furthermore, the lowering assembly 21 includes an L-shaped rod 211 fixedly connected to the bottom of the arc-shaped pressure plate 171, a stud 212 fixedly connected to the bottom of the rotating column 175, and a threaded cylinder 213 fixedly connected to the bottom inner wall of the rotating block 16. The stud 212 is threadedly connected to the inside of the threaded cylinder 213. When it is necessary to temporarily lock the opened rotating block 16, press the knob 176 to make the lower end of the stud 212 contact the threaded cylinder 213, and then rotate the knob 176. The stud 212 is screwed into the threaded cylinder 213, which drives the rotating column 175 and the limiting ring 177 to continuously press down the arc-shaped pressure plate 171, thereby driving the L-shaped rod 211 to move down synchronously, in preparation for triggering the pushing assembly 22.

[0024] Furthermore, the pushing assembly 22 includes a second guide rod 221 fixedly connected to the outside of the upright plate 20. A slide plate 222 is slidably connected to the outside of the second guide rod 221. The slide plate 222 is elastically connected to the upright plate 20 through a second spring 223. A second insert post 224 is fixedly connected to the side of the slide plate 222 closest to the upright plate 20. The second insert post 224 is slidably connected to the upright plate 20. A wedge block 225 is fixedly connected to the side of the second insert post 224 away from the upright plate 20. The second guide rod 221 contacts the wedge block 225. When the L-shaped rod 211 is driven downward by the lowering assembly 21, its end presses against the inclined surface of the wedge block 225. The wedge block 225 converts the vertical force into a horizontal force, pushing the slide plate 222 to compress the second spring 223 and slide along the second guide rod 221, thereby causing the second insert post 224 to be horizontally inserted into the through hole of the support post 15, realizing the temporary lock of the open state of the rotating block 16.

[0025] The support column 15 has a through hole at the position corresponding to the second insertion post 224, and the second insertion post 224 is slidably connected in the through hole. Notably, when the rotating block 16 rotates to its maximum angle, the second insertion post 224 aligns with the through hole. Driven by the pushing component 22, the second insertion post 224 inserts into the through hole, thus limiting the rotation block 16 and effectively preventing it from swinging during the installation preparation stage, ensuring that the arc-shaped counterweight 14 is accurately fitted onto the wire rope. To unlock, the knob 176 is operated in the opposite direction, and the second insertion post 224 exits the through hole under the restoring force of the second spring 223.

[0026] In use, before installing the limiter 10, rotate the rotating block 16 to its maximum angle. At this time, the second insert 224 corresponds to the through hole in the support column 15. Pressing the knob 176 causes the stud 212 to contact the threaded cylinder 213. At this time, the L-shaped rod 211 contacts the inclined block 225. Rotating the knob 176 causes the stud 212 to be threaded into the inside of the threaded cylinder 213, causing the arc-shaped pressure plate 171 to continue to move downward. This causes the L-shaped rod 211 to press the inclined block 225, causing it to move. This causes the sliding plate 222 to press the second spring 223, thus causing the second insert... 224 slides into the through hole opened in the support column 15, thereby limiting the rotating block 16 after rotation, so that the rotating block 16 will not wobble. Then, the limiter 10 is installed at high altitude. When positioning the arc-shaped weight 14 in the air, since the rotating block 16 is limited, the arc-shaped weight 14 can be moved to the outside of the wire rope without the need for the staff to manually rotate the rotating block 16. By rotating the rotary knob 176 in the opposite direction, the stud 212 is disengaged from the threaded cylinder 213, thereby quickly releasing the limitation on the rotating block 16, which makes it convenient to subsequently close and fix the arc-shaped weight 14 and the rotating block 16.

[0027] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A remotely controllable anti-overload counterweight limiter, characterized in that: include, The positioning component includes a limiter (10) connected to a remote control receiver. A limit switch contact (11) is provided at the bottom of the limiter (10). A suspension rope (12) is movably connected inside the limit switch contact (11). A lifting ring (13) is fixedly connected to the suspension rope (12). An arc-shaped weight (14) is fixedly connected to the bottom of the lifting ring (13). A support column (15) is fixedly connected inside the arc-shaped weight (14). A rotating block (16) is rotatably connected to the outside of the support column (15). A limit component (17) for locking the rotating block (16) is provided inside the rotating block (16). The stabilizing component includes a vertical plate (20) fixedly connected to the inner wall of the rotating block (16), a downward moving component (21) is provided on the bottom inner wall of the rotating block (16), and a pushing component (22) is provided inside the vertical plate (20).

2. The remotely controlled anti-overload counterweight limiter according to claim 1, characterized in that: The limiting component (17) includes an arc-shaped pressure plate (171) slidably connected to the inner wall of the rotating block (16). The top of the arc-shaped pressure plate (171) is fixedly connected to a first insert (172), which is slidably connected to the rotating block (16). A first guide rod (173) is fixedly connected to the inner wall of the rotating block (16). The arc-shaped pressure plate (171) is slidably connected to the outside of the first guide rod (173). The bottom of the arc-shaped pressure plate (171) is elastically connected to the rotating block (16) through a first spring (174). A rotating column (175) is rotatably connected inside the arc-shaped pressure plate (171). The rotating column (175) is movably connected to the rotating block (16). A knob (176) is fixedly connected to the top of the rotating column (175). A limiting ring (177) is fixedly connected to the outside of the rotating column (175).

3. The remotely controlled anti-overload counterweight limiter according to claim 2, characterized in that: The arc-shaped hammer (14) has a through hole at the position corresponding to the first insert (172), and the first insert (172) is slidably connected in the through hole.

4. A remotely controllable anti-overload counterweight limiter according to claim 2, characterized in that: The arc-shaped pressure plate (171) has a circular groove at the position corresponding to the limiting ring (177), and the limiting ring (177) is movably connected in the circular groove.

5. A remotely controllable anti-overload counterweight limiter according to claim 2, characterized in that: The lowering assembly (21) includes an L-shaped rod (211) fixedly connected to the bottom of the arc-shaped pressure plate (171), a stud (212) fixedly connected to the bottom of the rotating column (175), and a threaded cylinder (213) fixedly connected to the bottom inner wall of the rotating block (16), with the stud (212) threadedly connected to the inside of the threaded cylinder (213).

6. A remotely controllable anti-overload counterweight limiter according to claim 5, characterized in that: The pushing assembly (22) includes a second guide rod (221) fixedly connected to the outside of the upright plate (20). A sliding plate (222) is slidably connected to the outside of the second guide rod (221). The sliding plate (222) is elastically connected to the upright plate (20) through a second spring (223). A second insert (224) is fixedly connected to the side of the sliding plate (222) close to the upright plate (20). The second insert (224) is slidably connected to the upright plate (20). A wedge (225) is fixedly connected to the side of the second insert (224) away from the upright plate (20). The second guide rod (221) contacts the wedge (225).

7. A remotely controllable anti-overload counterweight limiter according to claim 6, characterized in that: The support column (15) has a through hole at the position corresponding to the second insert (224), and the second insert (224) is slidably connected in the through hole.

Images