Center current collector twist-off induction mounting device and crane
By installing a sensing module and an early warning system on the central receiving coupling of the gantry crane, the problem of insufficient torsion breakage warning was solved, enabling timely fault detection and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG LUHAI EQUIPMENT GROUP QINGDAO CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-08
AI Technical Summary
The lack of a center receiver coupling breakage warning device during operation of gantry cranes means that the operator cannot detect the breakage in time, which can easily lead to the escalation of accidents and safety hazards.
A torsion-triggered installation device for a central receiver is designed. By setting a first sensing module and a second sensing module at both ends of a telescopic universal joint, a proximity switch and a sensing rod are used to sense the relative displacement when the receiver is torsion-triggered, and a warning signal is issued to remind the driver.
It enables timely detection of torsion failures, prevents accidents from escalating, improves work safety, and reduces maintenance costs.
Smart Images
Figure CN224212302U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crane technology, and in particular to a central receiver torsion induction installation device and a crane. Background Technology
[0002] Gantry cranes, commonly known as "gate cranes," are lifting equipment widely used in ports, docks, and industrial sectors. They are cranes traditionally used at the forefront of port terminals, possessing four coordinated mechanisms: hoisting, slewing, luffing, and traveling. They are primarily used for loading and unloading cargo in ports and open-air stockyards. The structure of a gantry crane can be broadly divided into two parts: the upper slewing section and the lower non-slewing section. The central power receiver is one of the key components of a gantry crane, responsible for transmitting power and signals during the crane's circular motion. It features high integration, intelligent control, and high reliability, facilitating power and signal transmission.
[0003] Gantry cranes have experienced instances of central receiver couplings breaking during operation. However, the current lack of a warning device for such breakage means that operators may not detect the breakage immediately and continue working, which could easily escalate the accident, damage the crane, and pose a significant safety hazard as goods could fall. Utility Model Content
[0004] This utility model addresses the safety hazard posed by the lack of early warning systems for coupling breakage in current cranes by proposing a central receiver breakage sensing device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] This utility model provides a torsion-break sensing installation device for a central receiver, used to connect an upper connecting rod and a central receiver. It includes a telescopic universal coupling and a torsion-break sensing mechanism. The telescopic universal coupling has a first end and a second end opposite to each other. The first end is fixedly connected to the upper connecting rod via a first mounting bracket, and the second end is fixedly connected to the central receiver via a second mounting bracket. The torsion-break sensing mechanism includes a first sensing module, a second sensing module, and an early warning module. The first sensing module is connected to the early warning module, the first sensing module is connected to the first mounting bracket, and the second sensing module is connected to the second mounting bracket. The positions of the first and second sensing modules are relative to each other. When a relative displacement occurs between the first and second sensing modules, the first sensing module transmits a signal to the early warning module, causing the early warning module to issue an early warning message.
[0007] Furthermore, the first sensing module includes a proximity switch, and the second sensing module is provided with a sensing rod, one end of which is fixedly connected to the second mounting bracket, and the other end is opposite to the position of the proximity switch.
[0008] Furthermore, the distance between the proximity switch and the sensing rod is 10-20mm.
[0009] Furthermore, the distance between the sensing rod and the telescopic universal joint is 103-130mm.
[0010] Furthermore, the first mounting bracket is connected to a first fixed bracket, which includes a first segment and a second segment connected to each other. The extension directions of the first segment and the second segment are perpendicular to each other. The first segment is fixedly connected to the first mounting bracket. The second segment extends axially along the telescopic universal joint. One end of the second segment is provided with a fixing groove, and the proximity switch is fixed in the fixing groove. The second mounting bracket is connected to a second fixed bracket, which extends radially along the telescopic universal joint. One end of the sensing rod is fixed to the second fixed bracket.
[0011] Furthermore, the first mounting frame includes a first crossbeam, a second crossbeam, and at least two first vertical rods. The two first vertical rods are arranged in parallel and spaced apart. The extension direction of the first vertical rods is consistent with the axial direction of the telescopic universal coupling. The first crossbeam and the second crossbeam are respectively fixed to the axial ends of the first vertical rods. The first crossbeam is fixedly connected to the upper connecting rod, the second crossbeam is fixedly connected to the telescopic universal coupling, and the first section is fixedly connected to the second crossbeam.
[0012] Furthermore, the second mounting bracket includes a third crossbeam, a fourth crossbeam, and at least two second vertical rods. The two second vertical rods are arranged in parallel and spaced apart. The extension direction of the second vertical rods is consistent with the axial direction of the telescopic universal coupling. The third crossbeam and the fourth crossbeam are respectively fixed to the two ends of the axial direction of the second vertical rods. The third crossbeam is fixedly connected to the central receiving device, and the fourth crossbeam is fixedly connected to the telescopic universal coupling. The second mounting bracket is fixedly connected to the fourth crossbeam.
[0013] Furthermore, the early warning module includes a controller and an alarm device. The first sensing module and the alarm device are both connected to the controller. The controller is connected to the crane. The controller receives the signal transmitted by the first sensing module and controls the crane to stop. The controller also controls the alarm device to issue an alarm message.
[0014] This utility model also provides a crane, including a central receiver, an upper connecting rod, and a central receiver torsion sensing mounting device as described in any one of the above. The central receiver is fixedly connected to a second mounting frame, and the upper connecting rod is fixedly connected to a first mounting frame.
[0015] As can be seen from the above technical solutions, the advantages of this utility model are:
[0016] This invention features a first sensing module and a second sensing module that are respectively positioned at both ends of a telescopic universal joint. The first sensing module is connected to a warning module. When the telescopic universal joint breaks, a relative displacement occurs between the first and second sensing modules. The warning module then issues a warning message to alert the driver of the breakage, allowing the driver to detect the fault in time, preventing further accidents and improving work safety. In addition, it can also effectively buy time for repairs and reduce maintenance costs. Attached Figure Description
[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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.
[0018] Figure 1 This is a schematic diagram of the installation structure of the installation device in one embodiment of this utility model;
[0019] Figure 2 This is a schematic diagram of the installation device in one embodiment of the present invention;
[0020] Figure 3 This is a flowchart illustrating the operation of the torsion sensing mechanism in one embodiment of this utility model.
[0021] Explanation of key figure labels:
[0022] 100. Upper connecting rod; 200. Central receiver; 300. Telescopic universal coupling; 310. First end; 320. Second end; 410. First mounting bracket; 411. First crossbeam; 412. Second crossbeam; 413. First vertical rod; 420. Second mounting bracket; 421. Third crossbeam; 422. Fourth crossbeam; 423. Second vertical rod; 430. First fixing bracket; 431. First section; 432. Second section; 433. Fixing groove; 440. Second fixing bracket; 510. Proximity switch; 520. Sensing rod; 530. Controller; 540. Alarm device. Detailed Implementation
[0023] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.
[0024] Example 1
[0025] Please see Figures 1-3 A torsion-break sensing mounting device for connecting an upper connecting rod 100 and a central receiver 200 is disclosed. The device includes a telescopic universal coupling 300 and a torsion-break sensing mechanism. The telescopic universal coupling 300 has a first end 310 and a second end 320. The first end 310 is fixedly connected to the upper connecting rod 100 via a first mounting bracket 410, and the second end 320 is fixedly connected to the central receiver 200 via a second mounting bracket 420. The torsion-break sensing mechanism includes a first sensing module, a second sensing module, and an early warning module. The first sensing module is connected to the early warning module, the first sensing module is connected to the first mounting bracket 410, and the second sensing module is connected to the second mounting bracket 420. The positions of the first and second sensing modules are relative to each other. When a relative displacement occurs between the first and second sensing modules, the first sensing module transmits a signal to the early warning module, causing the early warning module to issue an early warning message.
[0026] In this embodiment, as Figure 1As shown, the upper connecting rod 100 and the central receiver 200 of the crane are both placed vertically. A telescopic universal joint 300 is connected between the upper connecting rod 100 and the central receiver 200. The telescopic universal joint 300 is also placed vertically, meaning its axial direction is vertical. The upper end of the telescopic universal joint 300 forms a first end 310, and the lower end forms a second end 320. The first end 310 is connected to a first mounting bracket 410, which is then fixedly connected to the bottom end of the upper connecting rod 100. The second end 320 is connected to a second mounting bracket 420, which is then fixedly connected to the upper end of the central receiver 200. Thus, the telescopic universal joint 300 is fixed between the upper connecting rod 100 and the central receiver 200. In addition, a first sensing module is fixedly connected to the first mounting bracket 410, and a second sensing module is fixedly connected to the second mounting bracket 420. The first and second sensing modules are positioned opposite each other and are mutually sensing. The first sensing module is connected to the warning module. Under normal conditions, the relative positions of the first and second sensing modules remain unchanged, and the first sensing module is in the off state. When the telescopic universal joint 300 breaks, since the first and second sensing modules are fixed at both ends of the telescopic universal joint 300 respectively, the relative positions of the two ends of the telescopic universal joint 300 change when it breaks. This causes a change in the relative position between the first and second sensing modules. After sensing the change in relative position, the first sensing module transmits a signal to the warning module. Upon receiving the signal, the warning module issues a warning message to remind the driver of the situation, allowing the driver to promptly detect the breakage and carry out emergency repairs.
[0027] In the above structure, by setting a position sensing first sensing module and a second sensing module at both ends of the telescopic universal joint 300, and connecting the first sensing module to the warning module, when the telescopic universal joint 300 breaks, a relative displacement occurs between the first sensing module and the second sensing module. Then, the warning module issues a warning message to remind the driver of the breakage, so that the driver can detect the fault in time, avoid further escalation of the accident, improve work safety, and also effectively buy time for maintenance and reduce maintenance costs.
[0028] In the specific structure of the torsion-breaking sensing mechanism, the first sensing module includes a proximity switch 510, and the second sensing module has a sensing rod 520. One end of the sensing rod 520 is fixedly connected to the second mounting bracket 420, and the other end is positioned opposite to the proximity switch 510. The distance between the proximity switch 510 and the sensing rod 520 is 10-20mm. The distance between the sensing rod 520 and the telescopic universal coupling 300 is 103-130mm.
[0029] In this embodiment, as Figure 2 As shown, the first sensing module includes a proximity switch 510, which is fixed on the first mounting bracket 410. The sensing end of the proximity switch 510 faces the telescopic universal joint 300. The second sensing module is a sensing rod 520, which is a rod-shaped structure extending vertically. One end of the sensing rod 520 is fixedly connected to the second mounting bracket 420, and the other end extends between the sensing end of the proximity switch 510 and the telescopic universal joint 300, so that the sensing end of the proximity switch 510 and the sensing rod 520 are positioned relative to each other. When the telescopic universal joint 300 breaks, the sensing rod 520 or the proximity switch 510 tilts or shifts in position, causing a change in the relative position of the sensing rod 520 and the proximity switch 510. The proximity switch 510 can then send a signal to the warning module. By setting the proximity switch 510 and the sensing rod 520 to sense each other, the accuracy of sensing is improved, and the breaking detection is better realized. Furthermore, the horizontal distance between the sensing end of the proximity switch 510 and the sensing rod 520 is 10-20mm, with an optimal distance of 15mm. If the proximity switch 510 and the sensing rod 520 are too close, normal vibrations can easily cause the proximity switch 510 to detect relative displacement changes, thus triggering an alarm and affecting normal operation. Conversely, a greater distance would reduce the accuracy of sensing. This distance effectively ensures the accuracy of sensing. Correspondingly, the distance between the sensing rod 520 and the telescopic universal joint 300 is 103-130mm, with an optimal distance of 125mm. This distance ensures both the sensing distance between the sensing rod 520 and the proximity switch 510, as well as the distance between the sensing rod 520 and the telescopic universal joint 300. This effectively prevents the sensing rod 520 from colliding with the telescopic universal joint 300 in the event of a breakage due to excessive proximity, thus avoiding further increases in maintenance costs.
[0030] In addition, the first mounting bracket 410 is connected to the first fixed bracket 430. The first fixed bracket 430 includes a first segment 431 and a second segment 432 connected to each other. The extension directions of the first segment 431 and the second segment 432 are perpendicular to each other. The first segment 431 is fixedly connected to the first mounting bracket 410. The second segment 432 extends along the axial direction of the telescopic universal joint 300. One end of the second segment 432 is provided with a fixing groove 433. The proximity switch 510 is fixed in the fixing groove 433. The second mounting bracket 420 is connected to the second fixed bracket 440. The second fixed bracket 440 extends along the radial direction of the telescopic universal joint 300. One end of the sensing rod 520 is fixed to the second fixed bracket 440.
[0031] In this embodiment, as Figure 2As shown, the first mounting bracket 430 has an L-shaped structure, including a first section 431 and a second section 432 connected together. The first section 431 is fixed horizontally to the first mounting bracket 410, and the second section 432 extends vertically downward and is located on one side of the telescopic universal joint 300. A fixing groove 433 is provided on the second section 432 in the horizontal direction, and the proximity switch 510 is fixed horizontally in the fixing groove 433, so that the sensing end of the proximity switch 510 faces the telescopic universal joint 300 in the horizontal direction. 0. In addition, the second fixing frame 440 can be a rectangular plate structure extending horizontally to one side of the telescopic universal joint 300 and set on the same side as the proximity switch 510. A sensing rod 520 is fixed to one end of the second fixing frame 440, so that one end of the sensing rod 520 extends between the proximity switch 510 and the telescopic universal joint 300. In this structure, the sensing direction of the proximity switch 510 is perpendicular to the axial direction of the telescopic universal joint 300, which further improves the accuracy of relative position sensing.
[0032] In the specific structure of the first mounting bracket 410, the first mounting bracket 410 includes a first crossbeam 411, a second crossbeam 412 and at least two first vertical rods 413. The two first vertical rods 413 are arranged in parallel and spaced apart. The extension direction of the first vertical rods 413 is consistent with the axial direction of the telescopic universal coupling 300. The first crossbeam 411 and the second crossbeam 412 are respectively fixed at both ends of the axial direction of the first vertical rod 413. The first crossbeam 411 is fixedly connected to the upper connecting rod 100, the second crossbeam 412 is fixedly connected to the telescopic universal coupling 300, and the first section 431 is fixedly connected to the second crossbeam 412.
[0033] In this embodiment, as Figure 2 As shown, the first mounting frame 410 includes a horizontally placed first crossbeam 411 and a second crossbeam 412. At least two first vertical rods 413 are fixed vertically between the first crossbeam 411 and the second crossbeam 412, with the two first vertical rods 413 spaced apart. The first crossbeam 411 is fixedly connected to the upper connecting rod 100. The second crossbeam 412 fixes the first section 431 of the first fixing frame 430 and the upper end of the telescopic universal joint 300. Bolts can be used for fixing to improve the connection strength. The first mounting frame 410 is connected by horizontal and vertical rods, which further improves the structural strength and stability of the first mounting frame 410 and the connection stability between the upper connecting rod 100 and the telescopic universal joint 300.
[0034] In the specific structure of the second mounting bracket 420, the second mounting bracket 420 includes a third crossbeam 421, a fourth crossbeam 422 and at least two second vertical rods 423. The two second vertical rods 423 are arranged in parallel and spaced apart. The extension direction of the second vertical rods 423 is consistent with the axial direction of the telescopic universal coupling 300. The third crossbeam 421 and the fourth crossbeam 422 are respectively fixed at both ends of the axial direction of the second vertical rods 423. The third crossbeam 421 is fixedly connected to the central receiver 200, and the fourth crossbeam 422 is fixedly connected to the telescopic universal coupling 300. The second fixing bracket 440 is fixedly connected to the fourth crossbeam 422.
[0035] Similar to the first mounting bracket 410, such as Figure 2 As shown, the second mounting bracket 420 includes a horizontally placed third crossbeam 421 and a fourth crossbeam 422. At least two second vertical rods 423 are fixed vertically between the third crossbeam 421 and the fourth crossbeam 422, with the two second vertical rods 423 spaced apart. The third crossbeam 421 is fixedly connected to the upper end of the central receiver 200. The fourth crossbeam 422 fixes the second fixing bracket 440 and the lower end of the telescopic universal coupling 300. Bolts can be used for fixing to improve the connection strength. The second mounting bracket 420 is connected by horizontal and vertical rods, which further improves the structural strength and stability, and improves the connection stability between the central receiver 200 and the telescopic universal coupling 300.
[0036] In the specific structure of the early warning module, the early warning module includes a controller 530 and an alarm device 540. The first sensing module and the alarm device 540 are both connected to the controller 530. The controller 530 is connected to the crane. The controller 530 receives the signal transmitted by the first sensing module and controls the crane to stop. The controller 530 also controls the alarm device 540 to issue an alarm message.
[0037] In this embodiment, as Figure 3 As shown, the controller 530 can be connected to the crane's drive mechanism. When a torsion occurs, the proximity switch 510 sends a signal to the controller 530, which then controls the crane to stop urgently and controls the warning device 540 to issue a warning message. By setting the controller 530, the crane can be stopped in time when a torsion occurs, which can effectively prevent the accident from escalating further and improve safety. In addition, the warning device 540 can be a display screen, on which the warning message is displayed, allowing the driver to understand the situation in a timely manner.
[0038] Example 2
[0039] Please see Figure 1The present invention also provides a crane, including a central receiver 200, an upper connecting rod 100 and a central receiver torsion sensing installation device, wherein the central receiver 200 is fixedly connected to the second mounting frame 420 and the upper connecting rod 100 is fixedly connected to the first mounting frame 410.
[0040] In this embodiment, the upper connecting rod 100 and the central receiver 200 of the crane are both placed vertically. A telescopic universal joint 300 is connected between the upper connecting rod 100 and the central receiver 200. The telescopic universal joint 300 is also placed vertically, meaning its axial direction is vertical. The upper end of the telescopic universal joint 300 forms a first end 310, and the lower end forms a second end 320. The first end 310 is connected to a first mounting bracket 410, which is then fixedly connected to the bottom end of the upper connecting rod 100. The second end 320 is connected to a second mounting bracket 420, which is then fixedly connected to the upper end of the central receiver 200. This allows the telescopic universal joint 300 to be fixed between the upper connecting rod 100 and the central receiver 200.
[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A central receiver torsion sensing mounting device for connecting an upper connecting rod and a central receiver, comprising a telescopic universal coupling, characterized in that, It also includes a torsion-breaking sensing mechanism. The telescopic universal coupling has a first end and a second end facing each other. The first end is fixedly connected to the upper connecting rod through a first mounting bracket, and the second end is fixedly connected to the central receiver through a second mounting bracket. The torsion-breaking sensing mechanism includes a first sensing module, a second sensing module, and an early warning module. The first sensing module is connected to the early warning module and the first mounting bracket. The second sensing module is connected to the second mounting bracket, and the positions of the first sensing module and the second sensing module are relative to each other. When the first sensing module and the second sensing module experience relative displacement, the first sensing module transmits a signal to the early warning module, causing the early warning module to issue an early warning message.
2. The central receiver torsion induction installation device according to claim 1, characterized in that, The first sensing module includes a proximity switch, and the second sensing module is provided with a sensing rod. One end of the sensing rod is fixedly connected to the second mounting bracket, and the other end is opposite to the position of the proximity switch.
3. The central receiver torsion induction installation device according to claim 2, characterized in that, The distance between the proximity switch and the sensing rod is 10-20mm.
4. The central receiver torsion induction installation device according to claim 3, characterized in that, The distance between the sensing rod and the retractable universal joint is 103-130mm.
5. The central receiver torsion induction installation device according to claim 2, characterized in that, The first mounting bracket is connected to a first fixed bracket. The first fixed bracket includes a first segment and a second segment connected to each other. The extension directions of the first segment and the second segment are perpendicular. The first segment is fixedly connected to the first mounting bracket. The second segment extends axially along the telescopic universal joint. One end of the second segment is provided with a fixing groove. The proximity switch is fixed in the fixing groove. The second mounting bracket is connected to a second fixed bracket. The second fixed bracket extends radially along the telescopic universal joint. One end of the sensing rod is fixed to the second fixed bracket.
6. The central receiver torsion induction installation device according to claim 5, characterized in that, The first mounting bracket includes a first crossbeam, a second crossbeam, and at least two first vertical rods. The two first vertical rods are arranged in parallel and spaced apart. The extension direction of the first vertical rods is consistent with the axial direction of the telescopic universal coupling. The first crossbeam and the second crossbeam are respectively fixed at both ends of the axial direction of the first vertical rods. The first crossbeam is fixedly connected to the upper connecting rod, the second crossbeam is fixedly connected to the telescopic universal coupling, and the first section is fixedly connected to the second crossbeam.
7. The central receiver torsion induction installation device according to claim 5, characterized in that, The second mounting bracket includes a third crossbeam, a fourth crossbeam, and at least two second vertical rods. The two second vertical rods are arranged in parallel and spaced apart. The extension direction of the second vertical rods is consistent with the axial direction of the telescopic universal coupling. The third crossbeam and the fourth crossbeam are respectively fixed at both ends of the axial direction of the second vertical rods. The third crossbeam is fixedly connected to the central receiving device, and the fourth crossbeam is fixedly connected to the telescopic universal coupling. The second mounting bracket is fixedly connected to the fourth crossbeam.
8. The central receiver torsion induction installation device according to claim 1, characterized in that, The early warning module includes a controller and an alarm device. The first sensing module and the alarm device are both connected to the controller. The controller is connected to the crane. The controller receives the signal transmitted by the first sensing module and controls the crane to stop. The controller also controls the alarm device to issue an alarm message.
9. A crane, characterized in that, It includes a central receiver, an upper connecting rod, and a central receiver torsion sensing mounting device as described in any one of claims 1-8, wherein the central receiver is fixedly connected to the second mounting bracket, and the upper connecting rod is fixedly connected to the first mounting bracket.