Anti-falling device for bridge crane
By installing fall protection devices with vertical supports and horizontal wire rope maintenance components on bridge cranes, the risk of falls during high-altitude operations is solved, providing a suspended support platform and energy absorption function, thereby improving the safety and efficiency of high-altitude operations.
Patent Information
- Application Number
- CN202520016471.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2035-01-03
AI Technical Summary
Bridge cranes pose a risk of falling when operating at heights, especially in confined spaces, which can lead to serious accidental injuries. Current technology lacks effective fall protection devices.
A fall arrestor device comprising vertical supports and horizontal wire rope guards was designed and installed on the main beam and end beams of the bridge crane. It provides a suspension support platform and ensures flexible suspension of the safety belt through the sliding cooperation between the slider and the intermediate support. Buffer energy absorption devices and tension indicator devices are installed at both ends of the horizontal wire rope guards to prevent excessive impact force.
It effectively prevents falls, reduces the risk of accidental injury in high-altitude operations, improves the safety and work efficiency of workers, and ensures the safety and flexible movement of personnel when working at heights.
Smart Images
Figure CN223561136U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of crane technology, specifically relating to a fall prevention device for bridge cranes. Background Technology
[0002] Currently, the bridge cranes used in the main powerhouse of pumped storage power stations in China are located at high altitudes, falling under the category of high-altitude operations. The cranes have a large working opening in the middle, while the travel space on both sides is narrow and obstructed by electrical boxes, markings, and other obstacles. The maximum fall height is over ten meters, posing a significant risk of injury in the event of a fall. Therefore, a fall protection device for bridge cranes is needed to provide suspension support for workers in the event of a fall, ensuring their safety. Utility Model Content
[0003] The technical problem to be solved by this utility model is to address the shortcomings of the prior art by providing a fall protection device for bridge cranes. The device has a reasonable structural design, and the setting of vertical supports and horizontal wire rope maintenance components can effectively provide a suspension support platform for the safety belts of workers. This ensures that if maintenance personnel accidentally fall during operation, it can prevent them from falling, thereby improving the safety of bridge crane maintenance personnel when working at heights and reducing the risk of accidental injury caused by falls.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a fall protection device for bridge cranes, characterized in that: it includes a horizontal fall protection mechanism installed on the main beam and end beams of the bridge crane for workers to suspend their safety belts. The horizontal fall protection mechanism includes multiple vertical supports and horizontal wire rope guards for sequentially connecting the multiple vertical supports. The vertical supports connected to the ends of the horizontal wire rope guards are called end supports, and the vertical supports connected to the middle sections of the horizontal wire rope guards are called intermediate supports. The end supports are provided with end supports, and the intermediate supports are provided with intermediate supports for connecting the horizontal wire rope guards. A slider for suspending safety belts is slidably installed on the horizontal wire rope guards. The slider is slidably engaged with the intermediate supports. One end of the horizontal wire rope guard is connected to one of the end supports through a tension indicator device, and the other end of the horizontal wire rope guard is connected to another end support through a buffer energy absorption device.
[0005] The aforementioned anti-fall device for bridge cranes is characterized in that: the horizontal wire rope enclosure comprises two parallel wire ropes.
[0006] The aforementioned anti-fall device for bridge cranes is characterized in that: the end support includes an end column and a diagonal brace connected to one side of the end column; the bottom of the end column is provided with a first bottom connecting plate, which is bolted to the main beam or end beam of the bridge crane; the upper end of the diagonal brace is fixed to the upper part of one side of the end column; and the bottom of the diagonal brace is provided with a second bottom connecting plate, which is bolted to the main beam or end beam of the bridge crane.
[0007] The aforementioned anti-fall device for bridge cranes is characterized in that: the end support is an L-shaped plate fixed to the top of the end support.
[0008] The above-mentioned anti-fall device for bridge cranes is characterized in that: the intermediate support includes an intermediate column, and a third bottom connecting plate is provided at the bottom of the intermediate column, and the third bottom connecting plate is installed on the main beam or end beam of the bridge crane by bolts.
[0009] The above-mentioned anti-fall device for bridge cranes is characterized in that: the intermediate support includes an installation sleeve fitted on the upper end of the intermediate support and a wire rope guide seat disposed on one side of the installation sleeve for wire rope to pass through, the wire rope guide seat is provided with two wire rope guide sleeves for wire rope to pass through, and the two wire ropes are respectively passed through the two wire rope guide sleeves.
[0010] The above-mentioned anti-fall device for bridge cranes is characterized in that: the slider includes a slider seat, a pull ring disposed on one side of the slider seat for suspension by a safety belt, and two open sliding sleeves disposed on the other side of the slider seat, wherein the open sliding sleeves slide through the corresponding wire rope and wire rope guide sleeve.
[0011] The above-mentioned anti-fall device for bridge cranes is characterized in that: one end of the tension indicator is connected to the end support by bolts, and the other end of the tension indicator is fastened to the two wire ropes of the horizontal wire rope enclosure.
[0012] The above-mentioned anti-fall device for bridge cranes is characterized in that: one end of the buffer energy absorption device is connected to the end support by bolts, and the other end of the buffer energy absorption device is provided with a force-sharing plate. Two merling locks are provided on the force-sharing plate, and the two merling locks are respectively fastened to the two wire ropes of the horizontal wire rope guard.
[0013] This utility model has the following advantages compared with the prior art:
[0014] 1. This utility model provides a suspension support platform for workers' safety belts by setting multiple vertical supports on the main beam and end beams of the bridge crane, and installing horizontal wire rope maintenance components on the multiple vertical supports as safety protection. This ensures that if maintenance personnel accidentally fall during operation, it can prevent them from falling, improve the safety of bridge crane maintenance personnel when working at heights, and reduce the risk of accidental injury caused by falls.
[0015] 2. This utility model allows workers to move around the horizontal wire rope enclosure after suspending their safety belts on the slider, ensuring flexible movement of maintenance personnel and unrestricted working position, thereby effectively improving work efficiency.
[0016] 3. This utility model further ensures personal safety by setting buffer energy absorption devices and tension indicator devices at both ends of the horizontal wire rope guardrail, thereby preventing excessive impact force on the body when workers accidentally fall during work.
[0017] In summary, the present invention has a reasonable structural design. The setting of vertical support and horizontal wire rope maintenance components can effectively provide a suspension support platform for the safety belt of the workers, ensuring that if the maintenance personnel accidentally fall during operation, it can play a fall prevention role, improve the safety of bridge crane maintenance personnel when working at heights, and reduce the risk of accidental injury caused by falls.
[0018] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model.
[0020] Figure 2 This is a schematic diagram of the connection structure between the buffer energy absorption device and the end support of this utility model.
[0021] Figure 3 This is a schematic diagram of the structure of the intermediate support of this utility model.
[0022] Figure 4 This is a schematic diagram of the slider of this utility model.
[0023] Explanation of reference numerals in the attached figures:
[0024] 1—Tension indicator; 2—Buffer energy absorption device; 3—Horizontal wire rope enclosure;
[0025] 4—End support; 401—End column; 402—Diagonal brace;
[0026] 403—First bottom connecting plate; 404—Second bottom connecting plate; 5—End support;
[0027] 6—Intermediate support; 601—Intermediate column; 602—Third bottom connecting plate;
[0028] 7—Intermediate support; 701—Mounting sleeve; 702—Wire rope guide seat;
[0029] 703—Wire rope guide sleeve; 8—Slider; 801—Slider seat;
[0030] 802—Pull ring; 803—Open sliding sleeve; 9—Force distribution plate;
[0031] 10—Meilong Lock. Detailed Implementation
[0032] like Figures 1 to 4 As shown, this utility model includes a horizontal fall protection mechanism installed on the main beam and end beam of the bridge crane for the suspension of safety belts of construction workers. The horizontal fall protection mechanism includes multiple vertical supports and horizontal wire rope guards 3 for sequentially connecting the multiple vertical supports. The vertical support connected to the end of the horizontal wire rope guard 3 is called the end support 4, and the vertical support connected to the middle section of the horizontal wire rope guard 3 is called the intermediate support 6. The end support 4 is provided with an end support 5, and the intermediate support 6 is provided with an intermediate support 7 for connecting the horizontal wire rope guard 3. A slider 8 for suspension of safety belts is slidably installed on the horizontal wire rope guard 3. The slider 8 is slidably engaged with the intermediate support 7. One end of the horizontal wire rope guard 3 is connected to one of the end supports 5 through a tension indicator device 1, and the other end of the horizontal wire rope guard 3 is connected to another end support 5 through a buffer energy absorption device 2.
[0033] In actual use, by setting multiple vertical supports on the main beam and end beam of the bridge crane, and installing horizontal wire rope guards 3 on the multiple vertical supports as safety protection, a suspension support platform can be effectively provided for the safety belts of the workers. This ensures that if maintenance personnel accidentally fall during operation, it can prevent them from falling, improve the safety of bridge crane maintenance personnel when working at heights, and reduce the risk of accidental injury caused by falls.
[0034] It should be noted that by sliding a slider 8 on the horizontal wire rope enclosure 3 and making the slider 8 slide in conjunction with the intermediate support 7, the workers can move around the horizontal wire rope enclosure 3 after hanging a safety belt on the slider 8, ensuring the flexible movement of maintenance personnel and that their working position is not restricted, thereby effectively improving work efficiency.
[0035] In practice, by setting buffer energy absorption devices 2 and tension indicator devices 1 at both ends of the horizontal wire rope guard 3, it is ensured that the impact force acting on the body after a worker accidentally falls during work is less than 6KN, thus further ensuring personal safety.
[0036] In practice, the tension indicator 1 is used to tighten the wire rope and bring it to a certain tension.
[0037] In this embodiment, the horizontal wire rope enclosure 3 includes two parallel wire ropes.
[0038] In actual use, two steel wire ropes are laid out vertically.
[0039] In this embodiment, the end support 4 includes an end column 401 and a diagonal brace 402 connected to one side of the end column 401. The bottom of the end column 401 is provided with a first bottom connecting plate 403, which is bolted to the main beam or end beam of the bridge crane. The upper end of the diagonal brace 402 is fixed to the upper part of one side of the end column 401. The bottom of the diagonal brace 402 is provided with a second bottom connecting plate 404, which is bolted to the main beam or end beam of the bridge crane.
[0040] In actual use, the end post 401 uses a 70mm×70mm×5mm square tube.
[0041] In this embodiment, the end support 5 is an L-shaped plate fixed to the top of the end support 4.
[0042] In actual use, bolt mounting holes are provided on the end support 5. The end support 5 is made of 304 stainless steel and the surface is sandblasted.
[0043] In this embodiment, the intermediate support 6 includes an intermediate column 601, and a third bottom connecting plate 602 is provided at the bottom of the intermediate column 601. The third bottom connecting plate 602 is installed on the main beam or end beam of the bridge crane by bolts.
[0044] In actual use, the first bottom connecting plate 403, the second bottom connecting plate 404 and the third bottom connecting plate 602 are all installed close to the top of the main beam or end beam of the bridge crane, and the first bottom connecting plate 403, the second bottom connecting plate 404 and the third bottom connecting plate 602 are all welded to the edge kick plate of the bridge crane.
[0045] like Figure 3As shown, in this embodiment, the intermediate support 7 includes an installation sleeve 701 fitted onto the upper end of the intermediate support 6 and a wire rope guide seat 702 disposed on one side of the installation sleeve 701 for the wire rope to pass through. The wire rope guide seat 702 is provided with two wire rope guide sleeves 703 for the wire rope to pass through, and the two wire ropes are respectively passed through the two wire rope guide sleeves 703.
[0046] In actual use, the mounting sleeve 701 is connected to the intermediate support 6 by bolts, and the two wire rope guide sleeves 703 are arranged one above the other.
[0047] like Figure 4 As shown, in this embodiment, the slider 8 includes a slider seat 801, a pull ring 802 disposed on one side of the slider seat 801 for suspension of the safety belt, and two open sliding sleeves 803 disposed on the other side of the slider seat 801. The open sliding sleeves 803 slide through the corresponding wire rope and wire rope guide sleeve 703.
[0048] In actual use, the open sliding sleeve 803 can slide through the corresponding wire rope and wire rope guide sleeve 703, and will not be obstructed by the wire rope guide seat 702 during the sliding process.
[0049] In this embodiment, one end of the tension indicator device 1 is connected to the end support 5 by bolts, and the other end of the tension indicator device 1 is fastened to the two wire ropes of the horizontal wire rope enclosure 3.
[0050] like Figure 2 As shown, in this embodiment, one end of the buffer energy absorption device 2 is connected to the end support 5 by bolts, and the other end of the buffer energy absorption device 2 is provided with a force-sharing plate 9. Two merling locks 10 are provided on the force-sharing plate 9, and the two merling locks 10 are respectively fastened to the two steel wire ropes of the horizontal steel wire rope enclosure 3.
[0051] In actual use, the initial deformation force of the buffer energy absorption device 2 is 6kN~7kN, and the minimum breaking force is ≥50kN; the Merlon lock 10 is made of stainless steel and is used to connect and fix the pressure sleeve end of the wire rope kit, with a single minimum breaking force ≥50kN; the force distribution plate 9 is a steel plate, with a central connection hole in the middle of one side for connecting the pull ring of one end of the buffer energy absorption device 2, and two force distribution holes symmetrically opened on the other side of the force distribution plate 9 for connecting the Merlon lock 10.
[0052] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.
Claims
1. A fall arrestor for bridge cranes, characterized in that: The system includes horizontal fall arrest mechanisms installed on the main beam and end beams of the bridge crane for workers to suspend their safety belts. These mechanisms include multiple vertical supports and horizontal wire rope guards (3) for sequentially connecting the vertical supports. The vertical supports connected to the ends of the horizontal wire rope guards (3) are designated as end supports (4), and the vertical supports connected to the middle sections of the horizontal wire rope guards (3) are designated as intermediate supports (6). End supports (5) are provided on the end supports (4). The support (6) is provided with an intermediate support (7) for connecting the horizontal wire rope guard (3). A slider (8) for suspending the safety belt is slidably installed on the horizontal wire rope guard (3). The slider (8) is slidably engaged with the intermediate support (7). One end of the horizontal wire rope guard (3) is connected to one of the end supports (5) through a tension indicator (1). The other end of the horizontal wire rope guard (3) is connected to another end support (5) through a buffer energy absorption device (2).
2. A fall arrestor for a bridge crane according to claim 1, characterized in that: The horizontal wire rope enclosure (3) includes two parallel wire ropes.
3. A fall arrestor for a bridge crane according to claim 1, characterized in that: The end support (4) includes an end column (401) and a diagonal brace (402) connected to one side of the end column (401). The bottom of the end column (401) is provided with a first bottom connecting plate (403), which is bolted to the main beam or end beam of the bridge crane. The upper end of the diagonal brace (402) is fixed to the upper part of one side of the end column (401). The bottom of the diagonal brace (402) is provided with a second bottom connecting plate (404), which is bolted to the main beam or end beam of the bridge crane.
4. A fall arrestor for a bridge crane according to claim 3, characterized in that: The end support (5) is an L-shaped plate fixed to the top of the end support (4).
5. A fall arrestor for a bridge crane according to claim 2, characterized in that: The intermediate support (6) includes an intermediate column (601), and a third bottom connecting plate (602) is provided at the bottom of the intermediate column (601). The third bottom connecting plate (602) is installed on the main beam or end beam of the bridge crane by bolts.
6. A fall arrestor for a bridge crane according to claim 5, characterized in that: The intermediate support (7) includes an installation sleeve (701) fitted onto the upper end of the intermediate support (6) and a wire rope guide seat (702) provided on one side of the installation sleeve (701) for wire ropes to pass through. The wire rope guide seat (702) is provided with two wire rope guide sleeves (703) for wire ropes to pass through, and the two wire ropes are respectively passed through the two wire rope guide sleeves (703).
7. A fall arrestor for a bridge crane according to claim 1, characterized in that: The slider (8) includes a slider seat (801), a pull ring (802) disposed on one side of the slider seat (801) for suspension of the safety belt, and two open sliding sleeves (803) disposed on the other side of the slider seat (801). The open sliding sleeves (803) slide through the corresponding wire rope and wire rope guide sleeve (703).
8. A fall arrestor for a bridge crane according to claim 2, characterized in that: One end of the tension indicator (1) is connected to the end support (5) by bolts, and the other end of the tension indicator (1) is fastened to the two wire ropes of the horizontal wire rope enclosure (3).
9. A fall arrestor for a bridge crane according to claim 2, characterized in that: One end of the buffer energy absorption device (2) is connected to the end support (5) by bolts, and the other end of the buffer energy absorption device (2) is provided with a force-sharing plate (9). Two Merong locks (10) are provided on the force-sharing plate (9), and the two Merong locks (10) are respectively fastened to the two wire ropes of the horizontal wire rope enclosure (3).