Anti-fall device and bridge crane

Abstract

The anti-fall device and bridge crane disclosed in the utility model relate to the technical field of lifting equipment, and include a first protective net and a second protective net. The first protective net is used to be arranged on the first side of the trolley and connected between the trolley and the first end of the bridge frame; the second protective net is used to be arranged on the second side of the trolley and connected between the trolley and the second end of the bridge frame. In the process of the trolley sliding toward the first end of the bridge frame, the first protective net is gradually folded and the second protective net is gradually unfolded. When the trolley slides toward the second end of the bridge frame, the first protective net is gradually unfolded and the second protective net is gradually folded, so that the bridge frame can always have an unfolded protective net structure except for the position where the trolley is located to prevent falling safely. At the same time, the first protective net and the second protective net avoid being directly below the position where the trolley is located, so as to avoid affecting the lifting and transportation process of the trolley.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, and more specifically, to an anti-falling device and a bridge crane. Background Art

[0002] Bridge cranes, also known as bridge cranes, are heavy lifting equipment commonly used for material handling inside large buildings or factories. The two ends of this crane are fixed to tall concrete columns or metal brackets, and its shape is similar to a bridge. This unique design allows the bridge crane to move longitudinally on tracks on elevated platforms on both sides, thereby achieving material lifting without taking up ground space. Bridge cranes occupy an important position in the industrial field. Their design and functions enable them to efficiently and safely perform heavy lifting operations indoors.

[0003] A bridge crane mainly consists of a main beam, an end beam and a trolley. There is a track above the main beam, and the trolley moves along the track, thereby driving the hoisted object to move on the main beam. However, once the travel drive mechanism of the trolley fails, the staff needs to inspect and maintain it. However, due to the characteristics of the trolley that needs to move, there is no safety guardrail on the side of the trolley track of the main beam, which makes the staff face great safety hazards when walking on the main beam, performing inspections and point inspections. Especially in the process of dynamic inspections, the operation of the trolley may cause the main beam to vibrate. At this time, the staff on the main beam is very likely to fall from a high altitude due to the instability of the center of gravity, which in turn causes a safety accident. In addition, if objects or parts on the bridge crane fall, it will also bring serious safety hazards.

[0004] Therefore, how to improve the safety of the bridge crane operation process has become a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] In view of this, an object of the present invention is to provide a fall prevention device to improve the safety of the operation process of a bridge crane.

[0006] Another object of the utility model is to provide a bridge crane including the above-mentioned anti-falling device.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An anti-falling device is used to be arranged on a bridge crane, wherein the bridge crane comprises a bridge frame and a trolley slidably arranged on the bridge frame, comprising:

[0009] A first protective net, used to be arranged on a first side of the trolley and connected between the trolley and a first end of the bridge;

[0010] A second protective net is used to be arranged on a second side of the trolley and connected between the trolley and a second end of the bridge frame;

[0011] Wherein, when the trolley slides toward the first end of the bridge frame, the first protective net is folded and the second protective net is unfolded; when the trolley slides toward the second end of the bridge frame, the first protective net is unfolded and the second protective net is folded.

[0012] Optionally, in the above-mentioned anti-fall device, it also includes:

[0013] There are two anti-falling rails connected between the first end and the second end of the bridge, and the first protection net and the second protection net are arranged between the two anti-falling rails;

[0014] A plurality of first fixing members are arranged at intervals on the first protective net and are slidably arranged on the anti-fall track;

[0015] The second fixing members are a plurality of members which are spaced apart on the second protective net and are slidably arranged on the anti-fall track.

[0016] Optionally, in the above-mentioned anti-fall device, along the extension direction of the anti-fall track, a first traction rope is connected between two adjacent first fixing members, and a second traction rope is connected between two adjacent second fixing members.

[0017] Optionally, in the above-mentioned anti-fall device, along the extension direction of the anti-fall track, the extension length of the first protective net corresponding to two adjacent first fixing members is greater than the extension length of the first traction rope, and the extension length of the second protective net corresponding to two adjacent second fixing members is greater than the extension length of the second traction rope.

[0018] Optionally, in the above-mentioned anti-fall device, it also includes:

[0019] A first sliding device, slidably disposed on the anti-fall track and connected to the trolley and the first protective net;

[0020] The second sliding device is slidably arranged on the anti-fall track and connected with the trolley and the second protective net.

[0021] Optionally, in the above-mentioned anti-fall device, the first sliding device is connected to the first protection net through a third traction rope, and the second sliding device is connected to the second protection net through a fourth traction rope.

[0022] Optionally, in the above-mentioned anti-fall device, the first sliding device and / or the second sliding device is a sliding sleeve; and / or,

[0023] The anti-fall track is a steel wire rope.

[0024] Optionally, in the above-mentioned anti-falling device, baffles are provided at both ends of the anti-falling track, and the baffles are used to abut against and limit the first sliding device and the second sliding device.

[0025] Optionally, in the above-mentioned anti-falling device, both ends of the anti-falling track are connected to the bridge frame through a fixing assembly, and the fixing assembly includes:

[0026] A fixed support, which is arranged on the bridge frame and has a fixing pin;

[0027] A rope connecting piece is connected to the end of the anti-fall track and is rotatably arranged on the fixing pin.

[0028] A bridge crane comprises the above-mentioned anti-falling device.

[0029] The anti-falling device provided by the utility model is used to be arranged on a bridge crane. The bridge crane includes a bridge frame and a trolley slidably arranged on the bridge frame. The anti-falling device includes a first protective net and a second protective net. The first protective net is used to be arranged on the first side of the trolley and connected between the trolley and the first end of the bridge frame; the second protective net is used to be arranged on the second side of the trolley and connected between the trolley and the second end of the bridge frame. In the process of the trolley sliding toward the first end of the bridge frame, the first protective net is gradually folded and the second protective net is gradually unfolded. When the trolley slides toward the second end of the bridge frame, the first protective net is gradually unfolded and the second protective net is gradually folded, so that the bridge frame can always have an unfolded protective net structure for anti-falling except for the position where the trolley is located. At the same time, the first protective net and the second protective net avoid being directly below the position where the trolley is located, which can avoid affecting the lifting and transportation process of the trolley.

[0030] Compared with the prior art, the anti-fall device disclosed in the embodiment of the utility model is used to be arranged on a bridge crane, which can realize the safety protection of operation and maintenance personnel during operation and maintenance and avoid falling situations. It can also prevent objects on the bridge crane from falling, thereby improving the safety of operators in the process of using the bridge crane and greatly reducing safety hazards. It also has the advantages of being compact and reasonable, easy to maintain, beautiful in appearance, safe and reliable, etc.

[0031] The bridge crane provided by the utility model includes any one of the above-mentioned anti-falling devices, so it also has the above-mentioned structure and beneficial effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 The structure of the anti-fall device disclosed in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0034] Figure 2 The structure of the anti-fall device disclosed in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0035] Figure 3 It is a structural schematic diagram of the connection between the anti-falling device and the bridge frame disclosed in the embodiment of the utility model;

[0036] Figure 4 The utility model is a schematic diagram of the structure of the connection between the anti-falling device and the trolley disclosed in the embodiment.

[0037] Among them, 100 is the bridge and 110 is the trolley;

[0038] 200 is an anti-falling device, 201 is a first protective net, 202 is a second protective net, 210 is a fourth traction rope, 211 is an anti-falling track, 212 is a second traction rope, 213 is a shackle, 214 is a second fixing member, 215 is a baffle, 216 is a rope clamp, 217 is a rope connecting member, 218 is a fixed support, and 219 is a second sliding device. DETAILED DESCRIPTION

[0039] The core of the utility model is to disclose a fall prevention device to improve the safety of the operation process of the bridge crane.

[0040] Another object of the utility model is to provide a bridge crane including the above-mentioned anti-falling device.

[0041] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary as solutions of the utility model described in the claims. It should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. In the absence of conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0042] Combination Figure 1-Figure 4The anti-falling device 200 disclosed in the embodiment of the utility model is used to be arranged on a bridge crane. The bridge crane includes a bridge frame 100 and a trolley 110 slidably arranged on the bridge frame 100. The anti-falling device 200 includes a first protective net 201 and a second protective net 202. The first protective net 201 is used to be arranged on a first side of the trolley 110 and connected between the trolley 110 and a first end of the bridge frame 100; the second protective net 202 is used to be arranged on a second side of the trolley 110 and connected between the trolley 110 and a second end of the bridge frame 100. During the process of the trolley 110 sliding toward the first end of the bridge frame 100, the first protective net 201 is gradually folded and the second protective net 202 is gradually unfolded. When the trolley 110 slides toward the second end of the bridge frame 100, the first protective net 201 is gradually unfolded and the second protective net 202 is gradually folded, so that the bridge frame 100 can always have an unfolded protective net structure to prevent falling except for the position where the trolley 110 is located. At the same time, the first protective net 201 and the second protective net 202 avoid being directly below the position where the trolley 110 is located, which can avoid affecting the lifting and transportation process of the trolley 110.

[0043] Compared with the prior art, the anti-fall device 200 disclosed in the embodiment of the utility model is used to be arranged on a bridge crane, which can realize the safety protection of operation and maintenance personnel during operation and maintenance to avoid falling situations, and can also prevent objects on the bridge crane from falling, thereby improving the safety of operators in the process of using the bridge crane, greatly reducing safety hazards, and also has the advantages of being compact and reasonable, easy to maintain, beautiful in appearance, safe and reliable, etc.

[0044] Those skilled in the art can understand that a bridge crane includes a main beam and an end beam, the end beam is parallel to the wall or bracket on which the bridge crane is installed, the main beam is perpendicular to the end beam, the main beam and the end beam roughly form a rectangular frame, the trolley 110 is located between the two main beams, and a trolley track is provided on the main beam, and the trolley 110 moves along the trolley track. This device is usually used on a bridge crane with a double main beam structure, so that the two sides of the first protective net 201 and the second protective net 202 can be respectively set on different main beams, so as to realize the deployment of the protective net, thereby forming a safe protection for the space between the two main beams.

[0045] Further optimization scheme, the anti-fall device 200 disclosed in the embodiment of the utility model also includes an anti-fall track 211, a first fixing member and a second fixing member 214, the anti-fall track 211 is two, and is arranged one by one with the two main beams, and the anti-fall track 211 is connected between the first end and the second end of the bridge frame 100, the first protective net 201 and the second protective net 202 are arranged between the two anti-fall tracks 211, the first fixing member and the second fixing member 214 can be slidably arranged on the anti-fall track 211, and the anti-fall track 211 is used as the first fixing member and the second fixing member 21 4, and the first fixing members are multiple and are arranged at intervals on the first protection net 201, and the second fixing members 214 are multiple and are arranged at intervals on the second protection net 202. The first and second fixing members 214 are arranged to realize multi-point fixation of the first and second protection nets 201, 202 and the anti-fall track 211, so as to ensure that the first and second protection nets 201, 202 can occupy as little space as possible in the folded state, thereby avoiding the first and second protection nets 201, 202 from hanging down and interfering with the bridge crane or hoisted objects.

[0046] Define the extension direction of the anti-fall rail 211 as the length direction of the first protective net 201 and the second protective net 202, then the two ends of the first protective net 201 and the second protective net 202 in the width direction are respectively fixed to the two anti-fall rails 211, that is, the first fixing member is specifically fixed to the edge position on both sides of the first protective net 201, and is slidably fixed to the two anti-fall rails 211 respectively, and the second fixing member 214 is specifically fixed to the edge position on both sides of the second protective net 202, and is slidably fixed to the two anti-fall rails 211 respectively, so as to ensure the expansion of the first protective net 201 and the second protective net 202 in the width direction.

[0047] Preferably, the first fixing members are arranged at equal intervals on the edge positions of both sides of the first protection net 201 , and the second fixing members 214 are arranged at equal intervals on the edge positions of both sides of the second protection net 202 .

[0048] The first fixing member and the second fixing member 214 can be specifically an annular member, which can be specifically a hook, a ring, etc. For example, when the first fixing member is a hook, the hook has an openable and closable hanging interface. During installation, the hook can be put on the first protective net 201 and the anti-fall track 211 at the hanging interface. After the installation is completed, the hanging interface is closed, and the hook forms a closed annular member and will not fall off. When the second fixing member 214 is an annular member directly hung and fixed on the second protective net 202, each second fixing member 214 can be passed through the end of the anti-fall track 211 in turn, and finally the anti-fall track 211 can be installed on the bridge frame 100 to achieve installation.

[0049] Preferably, the anti-fall track 211 is parallel or approximately parallel to the extension direction of the main beam of the bridge frame 100, so as to ensure that the folding path / unfolding path of the first protective net 201 and the second protective net 202 are parallel to the moving path of the trolley 110, so as to be convenient for being moved by the trolley 110. To further optimize the solution, the overall structure of the anti-fall device 200 is arranged below the main beam and the trolley 110 to avoid affecting the sliding of the trolley 110 on the main beam.

[0050] In a specific embodiment disclosed in the present utility model, in order to facilitate the trolley 110 to pull and move each first fixing member and each second fixing member 214, along the extension direction of the anti-fall track 211, a first traction rope is connected between two adjacent first fixing members, and a second traction rope 212 is connected between two adjacent second fixing members 214, so that the trolley 110 pulling a first fixing member can directly drive each first fixing member to slide, thereby driving the first protection net 201 to unfold, rather than the trolley 110 driving each first fixing member to slide on the anti-fall track 211 by pulling the first protection net 201 to move, thereby protecting the first protection net 201 and reducing the deformation of the first protection net 201. The reason for setting the second traction rope 212 is the same as the reason for setting the first traction rope, which will not be repeated here.

[0051] It is preferred to set the lengths of the first traction ropes to be the same, and the lengths of the second traction ropes 212 to be the same, so as to facilitate the layout. Specifically, each traction rope can be connected to the fixing member through a shackle 213.

[0052] A further optimization scheme is provided, in order to realize shape control of the first protection net 201 and the second protection net 202 in the unfolded state, it is set that along the extension direction of the anti-fall track 211, the extension length of the first protection net 201 corresponding to two adjacent first fixings (referring to the length when the first protection net 201 is completely flattened) is greater than the extension length of the first traction rope corresponding to two adjacent first fixings (referring to the length when the first traction rope is completely straightened), and the extension length of the second protection net 202 corresponding to two adjacent second fixings 214 (referring to the length when the second protection net 202 is completely flattened) is greater than the extension length of the second traction rope 212 corresponding to two adjacent second fixings 214 (referring to the length when the second traction rope 212 is completely straightened), so that during the movement of the trolley 110, the first traction rope can be tightened before the first protection net 201, and when the first traction rope is tightened, the first protection net 201 presents a protective state of unfolding and naturally hanging with a certain curvature, rather than a completely flattened state, thereby realizing the restriction of the unfolded shape of the first protection net 201. The principle of controlling the unfolding shape of the second protection net 202 is the same as that of the first protection net 201 and will not be repeated here.

[0053] In addition, the shape control of the first protection net 201 and the second protection net 202 in the unfolded state can be ensured by setting the width of the first protection net 201 and the second protection net 202 to be greater than the distance between the two anti-fall tracks 211.

[0054] In order to reduce the probability of interference between the trolley 110 and the protection net during the sliding process, the anti-falling device 200 also includes a first sliding device and a second sliding device 219. The first sliding device is slidably arranged on the anti-falling track 211 and connected to the trolley 110 and the first protection net 201; the second sliding device 219 is slidably arranged on the anti-falling track 211 and connected to the trolley 110 and the second protection net 202. When the trolley 110 slides toward the first end of the bridge 100, the first sliding device can conveniently push each first fixing member to slide in sequence along the extension direction of the anti-falling track 211, and when the trolley 110 slides toward the second end of the bridge 100, the second sliding device 219 can conveniently push each second fixing member 214 to slide in sequence along the extension direction of the anti-falling track 211.

[0055] The first sliding device and the second sliding device 219 are detachably connected to the two sides of the trolley 110, respectively, so as to respectively maintain the relative distance between the first protection net 201 and the second protection net 202 and the trolley 110. In addition, the setting of the first sliding device and the second sliding device 219 can also achieve safe isolation between the trolley 110 and the anti-fall track 211 to avoid interference between the two.

[0056] Specifically, the anti-fall track 211 can be a rope structure or a rod-shaped member, preferably a steel wire rope, which has a reliable structure, fast installation, strong adaptability, and convenient storage and transportation. Correspondingly, the first sliding device and the second sliding device 219 can be tubular members such as sliding sleeves and sliding sleeves.

[0057] It can be understood that if the first protective net 201 is fixed to the anti-fall rail 211 by the first fixing member, and the second protective net 202 is fixed to the anti-fall rail 211 by the second fixing member 214, the first sliding device can also be connected to the first fixing member located at the end of the first protective net 201 close to the trolley 110, and the second sliding device 219 can also be connected to the second fixing member 214 located at the end of the second protective net 202 close to the trolley 110.

[0058] Furthermore, the first sliding device is connected to the first protection net 201 through a third traction rope, and the second sliding device 219 is connected to the second protection net 202 through a fourth traction rope 210. Figure 4The first sliding device is connected to the first fixing member located at the end of the first protective net 201 close to the trolley 110 through the third traction rope, and the second sliding device 219 is connected to the second fixing member 214 located at the end of the second protective net 202 close to the trolley 110 through the fourth traction rope 210.

[0059] The third traction rope and the first fixing member, as well as the fourth traction rope 210 and the second fixing member 214 may also be connected via a shackle 213 .

[0060] In one embodiment, in combination Figure 3 The anti-fall track 211 is a steel wire rope, and both ends of the anti-fall track 211 are connected to the bridge frame 100 through a fixing assembly. The fixing assembly includes a fixing support 218 and a rope connector 217. The fixing support 218 is detachably arranged on the bridge frame 100 (end beam) by bolts and has a fixing pin. The rope connector 217 is connected to the end of the anti-fall track 211 and is rotatably arranged on the fixing pin.

[0061] Among them, the rope connector 217 can be a wedge joint or other components. The anti-fall track 211 can be specifically prepared by a steel wire rope with a diameter of 16 mm. In addition, a rope clip 216 and other related accessories can be set on the steel wire rope to fasten the steel wire rope. The fixing method of the steel wire rope is well known to those skilled in the art and will not be repeated here.

[0062] The first fixing part of the first protective net 201 away from the trolley 110 and the second fixing part of the second protective net 202 away from the trolley 110 can be respectively hung on the fixing pins of the fixing components at both ends of the bridge frame 100 to fix the first protective net 201 and the second protective net 202 to the bridge frame 100.

[0063] To further optimize the solution, in order to prevent the first sliding sleeve and the second sliding sleeve from interfering with the above-mentioned fixed component when they move to the end of the anti-fall track 211 with the movement of the trolley 110, baffles 215 are provided at the ends of both ends of the anti-fall track 211. The baffles 215 can respectively form abutment limits on the first sliding device and the second sliding device 219 to prevent the first sliding device and the second sliding device 219 from approaching the above-mentioned fixed component.

[0064] Preferably, the baffle 215 can also limit the first fixing member and the second fixing member 214 to avoid interference between the first fixing member and the second fixing member 214 and the above-mentioned fixing assembly.

[0065] Combination Figure 1 and Figure 2The utility model also discloses a bridge crane, including any one of the above-mentioned anti-falling devices 200. The bridge crane usually has two main beams, the trolley 110 is straddled between the two main beams, and the above-mentioned anti-falling device 200 is also arranged between the two main beams. The structure of other parts of the bridge crane can refer to the existing technology and will not be repeated here.

[0066] The above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. The specific technical means in some embodiments can be combined in part or in whole into another embodiment without being explicitly excluded by another embodiment. Therefore, the utility model will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A fall prevention device, used for being arranged on a bridge crane, the bridge crane comprising a bridge frame (100) and a trolley (110) slidably arranged on the bridge frame (100), characterized in that: include: A first protective net (201), used for being arranged on a first side of the trolley (110), and connected between the trolley (110) and a first end of the bridge frame (100); A second protective net (202) is used to be arranged on a second side of the trolley (110) and connected between the trolley (110) and a second end of the bridge frame (100); When the trolley (110) slides toward the first end of the bridge frame (100), the first protective net (201) is folded and the second protective net (202) is unfolded; when the trolley (110) slides toward the second end of the bridge frame (100), the first protective net (201) is unfolded and the second protective net (202) is folded.

2. The anti-fall device according to claim 1, characterized in that: Also includes: There are two anti-falling rails (211) connected between the first end and the second end of the bridge frame (100); the first protection net (201) and the second protection net (202) are arranged between the two anti-falling rails (211); A plurality of first fixing members are arranged at intervals on the first protective net (201) and are slidably arranged on the anti-fall track (211); The second fixing members (214) are a plurality of members which are arranged at intervals on the second protection net (202) and are slidably arranged on the anti-fall track (211).

3. The anti-fall device according to claim 2, characterized in that: Along the extension direction of the anti-fall track (211), a first traction rope is connected between two adjacent first fixing members, and a second traction rope (212) is connected between two adjacent second fixing members (214).

4. The anti-fall device according to claim 3, characterized in that: Along the extension direction of the anti-fall track (211), the extension length of the first protection net (201) corresponding to two adjacent first fixing members is greater than the extension length of the first traction rope, and the extension length of the second protection net (202) corresponding to two adjacent second fixing members (214) is greater than the extension length of the second traction rope (212).

5. The anti-fall device according to claim 2, characterized in that: Also includes: A first sliding device, slidably disposed on the anti-fall track (211) and connected to the trolley (110) and the first protective net (201); A second sliding device (219) is slidably disposed on the anti-fall track (211) and is connected to the trolley (110) and the second protection net (202).

6. The anti-fall device according to claim 5, characterized in that: The first sliding device is connected to the first protection net (201) via a third traction rope, and the second sliding device (219) is connected to the second protection net (202) via a fourth traction rope (210).

7. The anti-fall device according to claim 5, characterized in that: The first sliding device and / or the second sliding device (219) is a sliding sleeve; and / or, The anti-fall track (211) is a steel wire rope.

8. The anti-fall device according to claim 7, characterized in that: Baffles (215) are provided at both ends of the anti-fall track (211), and the baffles (215) are used to abut and limit the first sliding device and the second sliding device (219).

9. The anti-fall device according to claim 7, characterized in that: Both ends of the anti-fall track (211) are connected to the bridge frame (100) via a fixing assembly, wherein the fixing assembly comprises: A fixed support (218) is arranged on the bridge frame (100) and has a fixing pin; A rope connecting piece (217) is connected to the end of the anti-fall track (211) and is rotatably arranged on the fixing pin.

10. A bridge crane, characterized in that: The invention comprises a fall prevention device (200) as claimed in any one of claims 1 to 9.

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